--- /dev/null
+C*********************************************************************
+C*********************************************************************
+C* **
+C* November 2007 **
+C* **
+C* The Lund Monte Carlo **
+C* **
+C* PYTHIA version 6.4 **
+C* **
+C* Torbjorn Sjostrand **
+C* CERN/PH, CH-1211 Geneva, Switzerland **
+C* phone +41 - 22 - 767 82 27 **
+C* and **
+C* Department of Theoretical Physics **
+C* Lund University **
+C* Solvegatan 14A, S-223 62 Lund, Sweden **
+C* E-mail torbjorn@thep.lu.se **
+C* **
+C* SUSY and Technicolor parts by **
+C* Stephen Mrenna **
+C* Computing Division **
+C* Generators and Detector Simulation Group **
+C* Fermi National Accelerator Laboratory **
+C* MS 234, Batavia, IL 60510, USA **
+C* phone + 1 - 630 - 840 - 2556 **
+C* E-mail mrenna@fnal.gov **
+C* **
+C* New multiple interactions and more SUSY parts by **
+C* Peter Skands **
+C* Theoretical Physics Department **
+C* Fermi National Accelerator Laboratory **
+C* MS 106, Batavia, IL 60510, USA **
+C* and **
+C* CERN/PH, CH-1211 Geneva, Switzerland **
+C* phone +41 - 22 - 767 24 59 **
+C* E-mail skands@fnal.gov **
+C* **
+C* Several parts are written by Hans-Uno Bengtsson **
+C* PYSHOW is written together with Mats Bengtsson **
+C* PYMAEL is written by Emanuel Norrbin **
+C* advanced popcorn baryon production written by Patrik Eden **
+C* code for virtual photons mainly written by Christer Friberg **
+C* code for low-mass strings mainly written by Emanuel Norrbin **
+C* Bose-Einstein code mainly written by Leif Lonnblad **
+C* CTEQ parton distributions are by the CTEQ collaboration **
+C* GRV 94 parton distributions are by Glueck, Reya and Vogt **
+C* SaS photon parton distributions together with Gerhard Schuler **
+C* g + g and q + qbar -> t + tbar + H code by Zoltan Kunszt **
+C* MSSM Higgs mass calculation code by M. Carena, **
+C* J.R. Espinosa, M. Quiros and C.E.M. Wagner **
+C* PYGAUS adapted from CERN library (K.S. Kolbig) **
+C* NRQCD/colour octet production of onium by S. Wolf **
+C* **
+C* The latest program version and documentation is found on WWW **
+C* http://www.thep.lu.se/~torbjorn/Pythia.html **
+C* **
+C* Copyright Torbjorn Sjostrand, Lund (and CERN) 2007 **
+C* **
+C*********************************************************************
+C*********************************************************************
+C *
+C List of subprograms in order of appearance, with main purpose *
+C (S = subroutine, F = function, B = block data) *
+C *
+C B PYDATA to contain all default values *
+C S PYCKBD to check that BLOCK DATA has been correctly loaded *
+C S PYTEST to test the proper functioning of the package *
+C S PYHEPC to convert between /PYJETS/ and /HEPEVT/ records *
+C *
+C S PYINIT to administer the initialization procedure *
+C S PYEVNT to administer the generation of an event *
+C S PYEVNW ditto, for new multiple interactions scenario *
+C S PYSTAT to print cross-section and other information *
+C S PYUPEV to administer the generation of an LHA hard process *
+C S PYUPIN to provide initialization needed for LHA input *
+C S PYLHEF to produce a Les Houches Event File from run *
+C S PYINRE to initialize treatment of resonances *
+C S PYINBM to read in beam, target and frame choices *
+C S PYINKI to initialize kinematics of incoming particles *
+C S PYINPR to set up the selection of included processes *
+C S PYXTOT to give total, elastic and diffractive cross-sect. *
+C S PYMAXI to find differential cross-section maxima *
+C S PYPILE to select multiplicity of pileup events *
+C S PYSAVE to save alternatives for gamma-p and gamma-gamma *
+C S PYGAGA to handle lepton -> lepton + gamma branchings *
+C S PYRAND to select subprocess and kinematics for event *
+C S PYSCAT to set up kinematics and colour flow of event *
+C S PYEVOL handler for pT-ordered ISR and multiple interactions *
+C S PYSSPA to simulate initial state spacelike showers *
+C S PYPTIS to do pT-ordered initial state spacelike showers *
+C S PYMEMX auxiliary to PYSSPA/PYPTIS for ME correction maximum *
+C S PYMEWT auxiliary to PYSSPA/.. for matrix element correction *
+C S PYPTMI to do pT-ordered multiple interactions *
+C F PYFCMP to give companion quark x*f distribution *
+C F PYPCMP to calculate momentum integral for companion quarks *
+C S PYUPRE to rearranges contents of the HEPEUP commonblock *
+C S PYADSH to administrate sequential final-state showers *
+C S PYVETO to allow the generation of an event to be aborted *
+C S PYRESD to perform resonance decays *
+C S PYMULT to generate multiple interactions - old scheme *
+C S PYREMN to add on target remnants - old scheme *
+C S PYMIGN to generate multiple interactions - new scheme *
+C S PYMIHK to connect colours in mult. int. - new scheme *
+C S PYCTTR to translate PYTHIA colour information to LHA1 tags *
+C S PYMIHG to collapse two pairs of LHA1 colour tags. *
+C S PYMIRM to add on target remnants in mult. int.- new scheme *
+C S PYFSCR to perform final state colour reconnections - -"- *
+C S PYDIFF to set up kinematics for diffractive events *
+C S PYDISG to set up kinematics, remnant and showers for DIS *
+C S PYDOCU to compute cross-sections and handle documentation *
+C S PYFRAM to perform boosts between different frames *
+C S PYWIDT to calculate full and partial widths of resonances *
+C S PYOFSH to calculate partial width into off-shell channels *
+C S PYRECO to handle colour reconnection in W+W- events *
+C S PYKLIM to calculate borders of allowed kinematical region *
+C S PYKMAP to construct value of kinematical variable *
+C S PYSIGH to calculate differential cross-sections *
+C S PYSGQC auxiliary to PYSIGH for QCD processes *
+C S PYSGHF auxiliary to PYSIGH for heavy flavour processes *
+C S PYSGWZ auxiliary to PYSIGH for W and Z processes *
+C S PYSGHG auxiliary to PYSIGH for Higgs processes *
+C S PYSGSU auxiliary to PYSIGH for supersymmetry processes *
+C S PYSGTC auxiliary to PYSIGH for technicolor processes *
+C S PYSGEX auxiliary to PYSIGH for various exotic processes *
+C S PYPDFU to evaluate parton distributions *
+C S PYPDFL to evaluate parton distributions at low x and Q^2 *
+C S PYPDEL to evaluate electron parton distributions *
+C S PYPDGA to evaluate photon parton distributions (generic) *
+C S PYGGAM to evaluate photon parton distributions (SaS sets) *
+C S PYGVMD to evaluate VMD part of photon parton distributions *
+C S PYGANO to evaluate anomalous part of photon PDFs *
+C S PYGBEH to evaluate Bethe-Heitler part of photon PDFs *
+C S PYGDIR to evaluate direct contribution to photon PDFs *
+C S PYPDPI to evaluate pion parton distributions *
+C S PYPDPR to evaluate proton parton distributions *
+C F PYCTEQ to evaluate the CTEQ 3 proton parton distributions *
+C S PYGRVL to evaluate the GRV 94L proton parton distributions *
+C S PYGRVM to evaluate the GRV 94M proton parton distributions *
+C S PYGRVD to evaluate the GRV 94D proton parton distributions *
+C F PYGRVV auxiliary to the PYGRV* routines *
+C F PYGRVW auxiliary to the PYGRV* routines *
+C F PYGRVS auxiliary to the PYGRV* routines *
+C F PYCT5L to evaluate the CTEQ 5L proton parton distributions *
+C F PYCT5M to evaluate the CTEQ 5M1 proton parton distributions *
+C S PYPDPO to evaluate old proton parton distributions *
+C F PYHFTH to evaluate threshold factor for heavy flavour *
+C S PYSPLI to find flavours left in hadron when one removed *
+C F PYGAMM to evaluate ordinary Gamma function Gamma(x) *
+C S PYWAUX to evaluate auxiliary functions W1(s) and W2(s) *
+C S PYI3AU to evaluate auxiliary function I3(s,t,u,v) *
+C F PYSPEN to evaluate Spence (dilogarithm) function Sp(x) *
+C S PYQQBH to evaluate matrix element for g + g -> Q + Qbar + H *
+C S PYSTBH to evaluate matrix element for t + b + H processes *
+C S PYTBHB auxiliary to PYSTBH *
+C S PYTBHG auxiliary to PYSTBH *
+C S PYTBHQ auxiliary to PYSTBH *
+C F PYTBHS auxiliary to PYSTBH *
+C *
+C S PYMSIN to initialize the supersymmetry simulation *
+C S PYSLHA to interface to SUSY spectrum and decay calculators *
+C S PYAPPS to determine MSSM parameters from SUGRA input *
+C S PYSUGI to determine MSSM parameters using ISASUSY *
+C S PYFEYN to determine MSSM Higgs parameters using FEYNHIGGS *
+C F PYRNMQ to determine running squark masses *
+C S PYTHRG to calculate sfermion third-gen. mass eigenstates *
+C S PYINOM to calculate neutralino/chargino mass eigenstates *
+C F PYRNM3 to determine running M3, gluino mass *
+C S PYEIG4 to calculate eigenvalues and -vectors in 4*4 matrix *
+C S PYHGGM to determine Higgs mass spectrum *
+C S PYSUBH to determine Higgs masses in the MSSM *
+C S PYPOLE to determine Higgs masses in the MSSM *
+C S PYRGHM auxiliary to PYPOLE *
+C S PYGFXX auxiliary to PYRGHM *
+C F PYFINT auxiliary to PYPOLE *
+C F PYFISB auxiliary to PYFINT *
+C S PYSFDC to calculate sfermion decay partial widths *
+C S PYGLUI to calculate gluino decay partial widths *
+C S PYTBBN to calculate 3-body decay of gluino to neutralino *
+C S PYTBBC to calculate 3-body decay of gluino to chargino *
+C S PYNJDC to calculate neutralino decay partial widths *
+C S PYCJDC to calculate chargino decay partial widths *
+C F PYXXZ6 auxiliary for ino 3-body decays *
+C F PYXXGA auxiliary for ino -> ino + gamma decay *
+C F PYX2XG auxiliary for ino -> ino + gauge boson decay *
+C F PYX2XH auxiliary for ino -> ino + Higgs decay *
+C S PYHEXT to calculate non-SM Higgs decay partial widths *
+C F PYH2XX auxiliary for H -> ino + ino decay *
+C F PYGAUS to perform Gaussian integration *
+C F PYGAU2 copy of PYGAUS to allow two-dimensional integration *
+C F PYSIMP to perform Simpson integration *
+C F PYLAMF to evaluate the lambda kinematics function *
+C S PYTBDY to perform 3-body decay of gauginos *
+C S PYTECM to calculate techni_rho/omega masses *
+C S PYEICG to calculate eigenvalues of a 4*4 complex matrix *
+C S PYCMQR auxiliary to PYEICG *
+C S PYCMQ2 auxiliary to PYEICG *
+C S PYCDIV auxiliary to PYCMQR *
+C S PYCSRT auxiliary to PYCMQR *
+C S PYTHAG auxiliary to PYCMQR *
+C S PYCBAL auxiliary to PYEICG *
+C S PYCBA2 auxiliary to PYEICG *
+C S PYCRTH auxiliary to PYEICG *
+C S PYLDCM auxiliary to PYSIGH, for technicolor in QCD 2 -> 2 *
+C S PYBKSB auxiliary to PYSIGH, for technicolor in QCD 2 -> 2 *
+C S PYWIDX to calculate decay widths from within PYWIDT *
+C S PYRVSF to calculate R-violating sfermion decay widths *
+C S PYRVNE to calculate R-violating neutralino decay widths *
+C S PYRVCH to calculate R-violating chargino decay widths *
+C S PYRVGL to calculate R-violating gluino decay widths *
+C F PYRVSB auxiliary to PYRVSF *
+C S PYRVGW to calculate R-Violating 3-body widths *
+C F PYRVI1 auxiliary to PYRVGW, to do PS integration for res. *
+C F PYRVI2 auxiliary to PYRVGW, to do PS integration for LR-int.*
+C F PYRVI3 auxiliary to PYRVGW, to do PS X integral for int. *
+C F PYRVG1 auxiliary to PYRVI1, general matrix element, res. *
+C F PYRVG2 auxiliary to PYRVI2, general matrix element, LR-int. *
+C F PYRVG3 auxiliary to PYRVI3, to do PS Y integral for int. *
+C F PYRVG4 auxiliary to PYRVG3, general matrix element, int. *
+C F PYRVR auxiliary to PYRVG1, Breit-Wigner *
+C F PYRVS auxiliary to PYRVG2 & PYRVG4 *
+C *
+C S PY1ENT to fill one entry (= parton or particle) *
+C S PY2ENT to fill two entries *
+C S PY3ENT to fill three entries *
+C S PY4ENT to fill four entries *
+C S PY2FRM to interface to generic two-fermion generator *
+C S PY4FRM to interface to generic four-fermion generator *
+C S PY6FRM to interface to generic six-fermion generator *
+C S PY4JET to generate a shower from a given 4-parton config *
+C S PY4JTW to evaluate the weight od a shower history for above *
+C S PY4JTS to set up the parton configuration for above *
+C S PYJOIN to connect entries with colour flow information *
+C S PYGIVE to fill (or query) commonblock variables *
+C S PYONOF to allow easy control of particle decay modes *
+C S PYTUNE to select a predefined 'tune' for min-bias and UE *
+C S PYEXEC to administrate fragmentation and decay chain *
+C S PYPREP to rearrange showered partons along strings *
+C S PYSTRF to do string fragmentation of jet system *
+C S PYJURF to find boost to string junction rest frame *
+C S PYINDF to do independent fragmentation of one or many jets *
+C S PYDECY to do the decay of a particle *
+C S PYDCYK to select parton and hadron flavours in decays *
+C S PYKFDI to select parton and hadron flavours in fragm *
+C S PYNMES to select number of popcorn mesons *
+C S PYKFIN to calculate falvour prod. ratios from input params. *
+C S PYPTDI to select transverse momenta in fragm *
+C S PYZDIS to select longitudinal scaling variable in fragm *
+C S PYSHOW to do m-ordered timelike parton shower evolution *
+C S PYPTFS to do pT-ordered timelike parton shower evolution *
+C F PYMAEL auxiliary to PYSHOW & PYPTFS: gluon emission ME's *
+C S PYBOEI to include Bose-Einstein effects (crudely) *
+C S PYBESQ auxiliary to PYBOEI *
+C F PYMASS to give the mass of a particle or parton *
+C F PYMRUN to give the running MSbar mass of a quark *
+C S PYNAME to give the name of a particle or parton *
+C F PYCHGE to give three times the electric charge *
+C F PYCOMP to compress standard KF flavour code to internal KC *
+C S PYERRM to write error messages and abort faulty run *
+C F PYALEM to give the alpha_electromagnetic value *
+C F PYALPS to give the alpha_strong value *
+C F PYANGL to give the angle from known x and y components *
+C F PYR to provide a random number generator *
+C S PYRGET to save the state of the random number generator *
+C S PYRSET to set the state of the random number generator *
+C S PYROBO to rotate and/or boost an event *
+C S PYEDIT to remove unwanted entries from record *
+C S PYLIST to list event record or particle data *
+C S PYLOGO to write a logo *
+C S PYUPDA to update particle data *
+C F PYK to provide integer-valued event information *
+C F PYP to provide real-valued event information *
+C S PYSPHE to perform sphericity analysis *
+C S PYTHRU to perform thrust analysis *
+C S PYCLUS to perform three-dimensional cluster analysis *
+C S PYCELL to perform cluster analysis in (eta, phi, E_T) *
+C S PYJMAS to give high and low jet mass of event *
+C S PYFOWO to give Fox-Wolfram moments *
+C S PYTABU to analyze events, with tabular output *
+C *
+C S PYEEVT to administrate the generation of an e+e- event *
+C S PYXTEE to give the total cross-section at given CM energy *
+C S PYRADK to generate initial state photon radiation *
+C S PYXKFL to select flavour of primary qqbar pair *
+C S PYXJET to select (matrix element) jet multiplicity *
+C S PYX3JT to select kinematics of three-jet event *
+C S PYX4JT to select kinematics of four-jet event *
+C S PYXDIF to select angular orientation of event *
+C S PYONIA to perform generation of onium decay to gluons *
+C *
+C S PYBOOK to book a histogram *
+C S PYFILL to fill an entry in a histogram *
+C S PYFACT to multiply histogram contents by a factor *
+C S PYOPER to perform operations between histograms *
+C S PYHIST to print and reset all histograms *
+C S PYPLOT to print a single histogram *
+C S PYNULL to reset contents of a single histogram *
+C S PYDUMP to dump histogram contents onto a file *
+C *
+C S PYSTOP routine to handle Fortran STOP condition *
+C *
+C S PYKCUT dummy routine for user kinematical cuts *
+C S PYEVWT dummy routine for weighting events *
+C S UPINIT dummy routine to initialize user processes *
+C S UPEVNT dummy routine to generate a user process event *
+C S UPVETO dummy routine to abort event at parton level *
+C S PDFSET dummy routine to be removed when using PDFLIB *
+C S STRUCTM dummy routine to be removed when using PDFLIB *
+C S STRUCTP dummy routine to be removed when using PDFLIB *
+C S SUGRA dummy routine to be removed when linking with ISAJET *
+C F VISAJE dummy functn. to be removed when linking with ISAJET *
+C S SSMSSM dummy routine to be removed when linking with ISAJET *
+C S FHSETFLAGS dummy routine -"- FEYNHIGGS *
+C S FHSETPARA dummy routine -"- FEYNHIGGS *
+C S FHHIGGSCORR dummy routine -"- FEYNHIGGS *
+C S PYTAUD dummy routine for interface to tau decay libraries *
+C S PYTIME dummy routine for giving date and time *
+C *
+C*********************************************************************
+
+C...PYDATA
+C...Default values for switches and parameters,
+C...and particle, decay and process data.
+
+ BLOCK DATA PYDATA
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ COMMON/PYDATR/MRPY(6),RRPY(100)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT6/PROC(0:500)
+ CHARACTER PROC*28
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ COMMON/PYLH3P/MODSEL(200),PARMIN(100),PAREXT(200),RMSOFT(0:100),
+ & AU(3,3),AD(3,3),AE(3,3)
+ COMMON/PYLH3C/CPRO(2),CVER(2)
+ CHARACTER CPRO*12,CVER*12
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYDAT4/,/PYDATR/,/PYSUBS/,
+ &/PYPARS/,/PYINT1/,/PYINT2/,/PYINT3/,/PYINT4/,/PYINT5/,
+ &/PYINT6/,/PYINT7/,/PYMSSM/,/PYSSMT/,/PYMSRV/,/PYTCSM/,
+ &/PYBINS/,/PYLH3P/,/PYLH3C/
+
+C...PYDAT1, containing status codes and most parameters.
+ DATA MSTU/
+ & 0, 0, 0, 4000,10000, 500, 8000, 0, 0, 2,
+ 1 6, 0, 1, 0, 0, 1, 0, 0, 0, 0,
+ 2 2, 10, 0, 0, 1, 10, 0, 0, 0, 0,
+ 3 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 4 2, 2, 1, 4, 2, 1, 1, 0, 0, 0,
+ 5 25, 24, 0, 1, 0, 0, 0, 0, 0, 0,
+ 6 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 7 30*0,
+ 1 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 2 1, 5, 3, 5, 0, 0, 0, 0, 0, 0,
+ & 80*0/
+ DATA (PARU(I),I=1,100)/
+ & 3.141592653589793D0, 6.283185307179586D0,
+ & 0.197327D0, 5.06773D0, 0.389380D0, 2.56819D0, 4*0D0,
+ 1 0.001D0, 0.09D0, 0.01D0, 2D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 2 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 3 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 4 2.0D0, 1.0D0, 0.25D0, 2.5D0, 0.05D0,
+ 4 0D0, 0D0, 0.0001D0, 0D0, 0D0,
+ 5 2.5D0,1.5D0,7.0D0,1.0D0,0.5D0,2.0D0,3.2D0, 0D0, 0D0, 0D0,
+ 6 40*0D0/
+ DATA (PARU(I),I=101,200)/
+ & 0.00729735D0, 0.232D0, 0.007764D0, 1.0D0, 1.16639D-5,
+ & 0D0, 0D0, 0D0, 0D0, 0D0,
+ 1 0.20D0, 0.25D0, 1.0D0, 4.0D0, 10D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 2 -0.693D0, -1.0D0, 0.387D0, 1.0D0, -0.08D0,
+ 2 -1.0D0, 1.0D0, 1.0D0, 1.0D0, 0D0,
+ 3 1.0D0,-1.0D0, 1.0D0,-1.0D0, 1.0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 4 5.0D0, 1.0D0, 1.0D0, 0D0, 1.0D0, 1.0D0, 0D0, 0D0, 0D0, 0D0,
+ 5 1.0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 6 1.0D0, 1.0D0, 1.0D0, 1.0D0, 1.0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 7 1.0D0, 1.0D0, 1.0D0, 1.0D0, 1.0D0, 1.0D0, 1.0D0, 0D0,0D0,0D0,
+ 8 1.0D0, 1.0D0, 1.0D0, 0.0D0, 0.0D0, 1.0D0, 1.0D0, 0D0,0D0,0D0,
+ 9 0D0, 0D0, 0D0, 0D0, 1.0D0, 0D0, 0D0, 0D0, 0D0, 0D0/
+ DATA MSTJ/
+ & 1, 3, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1 4, 2, 0, 1, 0, 2, 2, 20, 0, 0,
+ 2 2, 1, 1, 2, 1, 2, 2, 0, 0, 0,
+ 3 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 4 2, 2, 4, 2, 5, 3, 3, 0, 0, 3,
+ 5 0, 3, 0, 2, 0, 0, 1, 0, 0, 0,
+ 6 40*0,
+ & 5, 2, 7, 5, 1, 1, 0, 2, 0, 2,
+ 1 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
+ 2 80*0/
+ DATA PARJ/
+ & 0.10D0, 0.30D0, 0.40D0, 0.05D0, 0.50D0,
+ & 0.50D0, 0.50D0, 0.6D0, 1.2D0, 0.6D0,
+ 1 0.50D0,0.60D0,0.75D0, 0D0, 0D0, 0D0, 0D0, 1.0D0, 1.0D0, 0D0,
+ 2 0.36D0, 1.0D0,0.01D0, 2.0D0,1.0D0,0.4D0, 0D0, 0D0, 0D0, 0D0,
+ 3 0.10D0, 1.0D0, 0.8D0, 1.5D0,0D0,2.0D0,0.2D0, 0D0,0.08D0,1D0,
+ 4 0.3D0, 0.58D0, 0.5D0, 0.9D0,0.5D0,1.0D0,1.0D0,1.5D0,1D0,10D0,
+ 5 0.77D0, 0.77D0, 0.77D0, -0.05D0, -0.005D0,
+ 5 0D0, 0D0, 0D0, 1.0D0, 0D0,
+ 6 4.5D0, 0.7D0, 0D0,0.003D0, 0.5D0, 0.5D0, 0D0, 0D0, 0D0, 0D0,
+ 7 10D0, 1000D0, 100D0, 1000D0, 0D0, 0.7D0,10D0, 0D0,0D0,0.5D0,
+ 8 0.29D0, 1.0D0, 1.0D0, 0D0, 10D0, 10D0, 0D0, 0D0, 0D0,1D-4,
+ 9 0.02D0, 1.0D0, 0.2D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ & 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 1 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 2 1.0D0, 0.25D0,91.187D0,2.489D0, 0.01D0,
+ 2 2.0D0, 1.0D0, 0.25D0,0.002D0, 0D0,
+ 3 0D0, 0D0, 0D0, 0D0, 0.01D0, 0.99D0, 0D0, 0D0, 0.2D0, 0D0,
+ 4 10*0D0,
+ 5 10*0D0,
+ 6 10*0D0,
+ 7 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, -0.693D0,
+ 8 -1.0D0, 0.387D0, 1.0D0, -0.08D0, -1.0D0,
+ 8 1.0D0, 1.0D0, -0.693D0, -1.0D0, 0.387D0,
+ 9 1.0D0, -0.08D0, -1.0D0, 1.0D0, 1.0D0,
+ 9 5*0D0/
+
+C...PYDAT2, with particle data and flavour treatment parameters.
+ DATA (KCHG(I,1),I= 1, 500)/-1,2,-1,2,-1,2,-1,2,2*0,-3,0,-3,0,
+ &-3,0,-3,6*0,3,9*0,3,2*0,3,4*0,-1,41*0,2,-1,20*0,3*3,7*0,3*3,3*0,
+ &3*3,3*0,3*3,6*0,3*3,3*0,3*3,4*0,-2,-3,2*1,2*0,4,2*3,6,2*-2,2*-3,
+ &0,2*1,2*0,2*3,-2,2*-3,2*0,-3,2*1,2*0,3,0,2*4,2*3,2*6,3,2*1,2*0,
+ &2*3,2*0,4,2*3,2*6,2*3,6,2*-2,2*-3,0,-3,0,2*1,2*0,2*3,0,3,2*-2,
+ &2*-3,2*0,2*-3,0,2*1,2*0,2*3,2*0,2*3,-2,2*-3,2*0,2*-3,2*0,-3,2*0,
+ &2*3,4*0,2*3,2*0,2*3,2*0,2*3,4*0,2*3,2*0,2*3,3*0,3,2*0,3,0,3,0,3,
+ &2*0,3,0,3,3*0,-1,2,-1,2,-1,2,-3,0,-3,0,-3,4*0,3,2*0,3,0,-1,2,-1,
+ &2,-1,2,-3,0,-3,0,-3,2*0,3,3*0,3,8*0,-1,2,-3,6*0,3,2*6,0,3,4*0,3,
+ &7*0,3,131*0/
+ DATA (KCHG(I,2),I= 1, 500)/8*1,12*0,2,20*0,1,107*0,-1,0,2*-1,
+ &2*0,-1,3*0,2*-1,3*0,2*-1,4*0,-1,5*0,2*-1,4*0,2*-1,5*0,2*-1,6*0,
+ &-1,7*0,2*-1,5*0,2*-1,6*0,2*-1,7*0,2*-1,8*0,-1,56*0,6*1,6*0,2,7*0,
+ &6*1,9*0,2,3*0,2,0,5*2,2*1,17*0,6*2,133*0/
+ DATA (KCHG(I,3),I= 1, 500)/8*1,2*0,8*1,5*0,1,9*0,1,2*0,1,3*0,
+ &2*1,39*0,1,0,2*1,20*0,3*1,4*0,6*1,3*0,9*1,3*0,12*1,4*0,100*1,2*0,
+ &2*1,2*0,4*1,2*0,6*1,2*0,8*1,3*0,1,0,2*1,0,3*1,0,4*1,3*0,12*1,3*0,
+ &1,2*0,1,0,12*1,0,1,3*0,1,8*0,4*1,5*0,3*1,0,1,3*0,2*1,7*0,1,131*0/
+ DATA (KCHG(I,4),I= 1, 290)/1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,
+ &16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,
+ &37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,
+ &58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,
+ &79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,
+ &100,110,111,113,115,130,211,213,215,221,223,225,310,311,313,315,
+ &321,323,325,331,333,335,411,413,415,421,423,425,431,433,435,441,
+ &443,445,511,513,515,521,523,525,531,533,535,541,543,545,551,553,
+ &555,990,1103,1114,2101,2103,2112,2114,2203,2212,2214,2224,3101,
+ &3103,3112,3114,3122,3201,3203,3212,3214,3222,3224,3303,3312,3314,
+ &3322,3324,3334,4101,4103,4112,4114,4122,4132,4201,4203,4212,4214,
+ &4222,4224,4232,4301,4303,4312,4314,4322,4324,4332,4334,4403,4412,
+ &4414,4422,4424,4432,4434,4444,5101,5103,5112,5114,5122,5132,5142,
+ &5201,5203,5212,5214,5222,5224,5232,5242,5301,5303,5312,5314,5322,
+ &5324,5332,5334,5342,5401,5403,5412,5414,5422,5424,5432,5434,5442,
+ &5444,5503,5512,5514,5522,5524,5532,5534,5542,5544,5554,10111,
+ &10113,10211,10213,10221,10223,10311,10313,10321,10323,10331,
+ &10333,10411,10413,10421,10423,10431,10433,10441,10443,10511,
+ &10513,10521,10523,10531,10533,10541,10543,10551,10553,20113,
+ &20213,20223,20313,20323,20333,20413,20423,20433,20443,20513/
+ DATA (KCHG(I,4),I= 291, 500)/20523,20533,20543,20553,100443,
+ &100553,1000001,1000002,1000003,1000004,1000005,1000006,1000011,
+ &1000012,1000013,1000014,1000015,1000016,1000021,1000022,1000023,
+ &1000024,1000025,1000035,1000037,1000039,2000001,2000002,2000003,
+ &2000004,2000005,2000006,2000011,2000012,2000013,2000014,2000015,
+ &2000016,3000111,3000211,3000221,3000331,3000113,3000213,3000223,
+ &3100021,3100111,3200111,3100113,3200113,3300113,3400113,4000001,
+ &4000002,4000011,4000012,5000039,9900012,9900014,9900016,9900023,
+ &9900024,9900041,9900042,9900110,9900210,9900220,9900330,9900440,
+ &9902110,9902210,9900443,9900441,9910441,9900553,9900551,9910551,
+ &3000115,3000215,131*0/
+ DATA (PMAS(I,1),I= 1, 217)/2*0.33D0,0.5D0,1.5D0,4.8D0,175D0,
+ &2*400D0,2*0D0,0.00051D0,0D0,0.10566D0,0D0,1.777D0,0D0,400D0,
+ &5*0D0,91.188D0,80.45D0,115D0,6*0D0,500D0,900D0,500D0,3*300D0,
+ &3*0D0,5000D0,200D0,40*0D0,1D0,2D0,5D0,16*0D0,0.13498D0,0.7685D0,
+ &1.318D0,0.49767D0,0.13957D0,0.7669D0,1.318D0,0.54745D0,0.78194D0,
+ &1.275D0,2*0.49767D0,0.8961D0,1.432D0,0.4936D0,0.8916D0,1.425D0,
+ &0.95777D0,1.0194D0,1.525D0,1.8693D0,2.01D0,2.46D0,1.8645D0,
+ &2.0067D0,2.46D0,1.9685D0,2.1124D0,2.5735D0,2.9798D0,3.09688D0,
+ &3.5562D0,5.2792D0,5.3248D0,5.83D0,5.2789D0,5.3248D0,5.83D0,
+ &5.3693D0,5.4163D0,6.07D0,6.594D0,6.602D0,7.35D0,9.4D0,9.4603D0,
+ &9.9132D0,0D0,0.77133D0,1.234D0,0.57933D0,0.77133D0,0.93957D0,
+ &1.233D0,0.77133D0,0.93827D0,1.232D0,1.231D0,0.80473D0,0.92953D0,
+ &1.19744D0,1.3872D0,1.11568D0,0.80473D0,0.92953D0,1.19255D0,
+ &1.3837D0,1.18937D0,1.3828D0,1.09361D0,1.3213D0,1.535D0,1.3149D0,
+ &1.5318D0,1.67245D0,1.96908D0,2.00808D0,2.4521D0,2.5D0,2.2849D0,
+ &2.4703D0,1.96908D0,2.00808D0,2.4535D0,2.5D0,2.4529D0,2.5D0,
+ &2.4656D0,2.15432D0,2.17967D0,2.55D0,2.63D0,2.55D0,2.63D0,2.704D0,
+ &2.8D0,3.27531D0,3.59798D0,3.65648D0,3.59798D0,3.65648D0,
+ &3.78663D0,3.82466D0,4.91594D0,5.38897D0,5.40145D0,5.8D0,5.81D0,
+ &5.641D0,5.84D0,7.00575D0,5.38897D0,5.40145D0,5.8D0,5.81D0,5.8D0/
+ DATA (PMAS(I,1),I= 218, 500)/5.81D0,5.84D0,7.00575D0,5.56725D0,
+ &5.57536D0,5.96D0,5.97D0,5.96D0,5.97D0,6.12D0,6.13D0,7.19099D0,
+ &6.67143D0,6.67397D0,7.03724D0,7.0485D0,7.03724D0,7.0485D0,
+ &7.21101D0,7.219D0,8.30945D0,8.31325D0,10.07354D0,10.42272D0,
+ &10.44144D0,10.42272D0,10.44144D0,10.60209D0,10.61426D0,
+ &11.70767D0,11.71147D0,15.11061D0,0.9835D0,1.231D0,0.9835D0,
+ &1.231D0,1D0,1.17D0,1.429D0,1.29D0,1.429D0,1.29D0,2*1.4D0,2.272D0,
+ &2.424D0,2.272D0,2.424D0,2.5D0,2.536D0,3.4151D0,3.46D0,5.68D0,
+ &5.73D0,5.68D0,5.73D0,5.92D0,5.97D0,7.25D0,7.3D0,9.8598D0,9.875D0,
+ &2*1.23D0,1.282D0,2*1.402D0,1.427D0,2*2.372D0,2.56D0,3.5106D0,
+ &2*5.78D0,6.02D0,7.3D0,9.8919D0,3.686D0,10.0233D0,32*500D0,
+ &3*110D0,350D0,3*210D0,500D0,125D0,250D0,400D0,2*350D0,300D0,
+ &4*400D0,1000D0,3*500D0,1200D0,750D0,2*200D0,7*0D0,3*3.1D0,
+ &3*9.5D0,2*250D0,131*0D0/
+ DATA (PMAS(I,2),I= 1, 500)/5*0D0,1.39816D0,16*0D0,2.47813D0,
+ &2.07115D0,0.00367D0,6*0D0,14.54029D0,0D0,16.66099D0,8.38842D0,
+ &3.3752D0,4.17669D0,3*0D0,417.29147D0,0.39162D0,60*0D0,0.151D0,
+ &0.107D0,2*0D0,0.149D0,0.107D0,0D0,0.00843D0,0.185D0,2*0D0,
+ &0.0505D0,0.109D0,0D0,0.0498D0,0.098D0,0.0002D0,0.00443D0,0.076D0,
+ &2*0D0,0.023D0,2*0D0,0.023D0,2*0D0,0.015D0,0.0013D0,0D0,0.002D0,
+ &2*0D0,0.02D0,2*0D0,0.02D0,2*0D0,0.02D0,2*0D0,0.02D0,5*0D0,0.12D0,
+ &3*0D0,0.12D0,2*0D0,2*0.12D0,3*0D0,0.0394D0,4*0D0,0.036D0,0D0,
+ &0.0358D0,2*0D0,0.0099D0,0D0,0.0091D0,74*0D0,0.06D0,0.142D0,
+ &0.06D0,0.142D0,0D0,0.36D0,0.287D0,0.09D0,0.287D0,0.09D0,0.25D0,
+ &0.08D0,0.05D0,0.02D0,0.05D0,0.02D0,0.05D0,0D0,0.014D0,0.01D0,
+ &8*0.05D0,0D0,0.01D0,2*0.4D0,0.025D0,2*0.174D0,0.053D0,3*0.05D0,
+ &0.0009D0,4*0.05D0,3*0D0,19*1D0,0D0,7*1D0,0D0,1D0,0D0,1D0,0D0,
+ &0.0208D0,0.01195D0,0.03705D0,0.09511D0,1.89978D0,1.60746D0,
+ &0.13396D0,200.47294D0,0.02296D0,0.18886D0,94.66794D0,6.08718D0,
+ &0D0,2.17482D0,2.59359D0,2.59687D0,0.42896D0,0.41912D0,0.14153D0,
+ &2*0.00098D0,0.00097D0,26.7245D0,21.74916D0,0.88159D0,0.88001D0,
+ &7*0D0,6*0.01D0,0.25499D0,0.28446D0,131*0D0/
+ DATA (PMAS(I,3),I= 1, 500)/5*0D0,13.98156D0,16*0D0,24.78129D0,
+ &20.71149D0,0.03669D0,6*0D0,145.40294D0,0D0,166.60993D0,
+ &83.88423D0,33.75195D0,41.76694D0,3*0D0,4172.91467D0,3.91621D0,
+ &60*0D0,0.4D0,0.25D0,2*0D0,0.4D0,0.25D0,0D0,0.1D0,0.17D0,2*0D0,
+ &0.2D0,0.12D0,0D0,0.2D0,0.12D0,0.002D0,0.015D0,0.2D0,2*0D0,0.12D0,
+ &2*0D0,0.12D0,2*0D0,0.05D0,0.005D0,0D0,0.01D0,2*0D0,0.05D0,2*0D0,
+ &0.05D0,2*0D0,0.05D0,2*0D0,0.05D0,5*0D0,0.14D0,3*0D0,0.14D0,2*0D0,
+ &2*0.14D0,3*0D0,0.04D0,4*0D0,0.035D0,0D0,0.035D0,2*0D0,0.05D0,0D0,
+ &0.05D0,74*0D0,0.05D0,0.25D0,0.05D0,0.25D0,0D0,0.2D0,0.4D0,
+ &0.005D0,0.4D0,0.01D0,0.35D0,0.001D0,0.1D0,0.08D0,0.1D0,0.08D0,
+ &0.1D0,0D0,0.05D0,0.02D0,6*0.1D0,0.05D0,0.1D0,0D0,0.02D0,2*0.3D0,
+ &0.05D0,2*0.3D0,0.02D0,2*0.1D0,0.03D0,0.001D0,4*0.1D0,3*0D0,
+ &19*10D0,0.00001D0,7*10D0,0.00001D0,10D0,0.00001D0,10D0,0.00001D0,
+ &0.20797D0,0.11949D0,0.37048D0,0.95114D0,18.99785D0,16.07463D0,
+ &1.33964D0,450D0,0.22959D0,1.88863D0,360D0,60.8718D0,0D0,
+ &21.74824D0,25.93594D0,25.96873D0,4.28961D0,4.19124D0,1.41528D0,
+ &0.00977D0,0.00976D0,0.00973D0,267.24501D0,217.49162D0,8.81592D0,
+ &8.80013D0,13*0D0,2.54987D0,2.84456D0,131*0D0/
+ DATA (PMAS(I,4),I= 1, 500)/12*0D0,658654D0,0D0,0.0872D0,68*0D0,
+ &0.1D0,0.387D0,16*0D0,0.00003D0,2*0D0,15500D0,7804.5D0,5*0D0,
+ &26.762D0,3*0D0,3709D0,5*0D0,0.317D0,2*0D0,0.1244D0,2*0D0,0.14D0,
+ &5*0D0,0.468D0,2*0D0,0.462D0,2*0D0,0.483D0,2*0D0,0.15D0,18*0D0,
+ &44.34D0,0D0,78.88D0,4*0D0,23.96D0,2*0D0,49.1D0,0D0,87.1D0,0D0,
+ &24.6D0,4*0D0,0.0618D0,0.029D0,6*0D0,0.106D0,6*0D0,0.019D0,2*0D0,
+ &7*0.1D0,4*0D0,0.342D0,2*0.387D0,6*0D0,2*0.387D0,6*0D0,0.387D0,
+ &0D0,0.387D0,2*0D0,8*0.387D0,0D0,9*0.387D0,120*0D0,131*0D0/
+
+ DATA PARF/
+ & 0.5D0,0.25D0, 0.5D0,0.25D0, 1D0, 0.5D0, 0D0, 0D0, 0D0, 0D0,
+ 1 0.5D0, 0D0, 0.5D0, 0D0, 1D0, 1D0, 0D0, 0D0, 0D0, 0D0,
+ 2 0.5D0, 0D0, 0.5D0, 0D0, 1D0, 1D0, 0D0, 0D0, 0D0, 0D0,
+ 3 0.5D0, 0D0, 0.5D0, 0D0, 1D0, 1D0, 0D0, 0D0, 0D0, 0D0,
+ 4 0.5D0, 0D0, 0.5D0, 0D0, 1D0, 1D0, 0D0, 0D0, 0D0, 0D0,
+ 5 0.5D0, 0D0, 0.5D0, 0D0, 1D0, 1D0, 0D0, 0D0, 0D0, 0D0,
+ 6 0.75D0, 0.5D0, 0D0,0.1667D0,0.0833D0,0.1667D0,0D0,0D0,0D0, 0D0,
+ 7 0D0, 0D0, 1D0,0.3333D0,0.6667D0,0.3333D0,0D0,0D0,0D0, 0D0,
+ 8 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 9 0.0099D0, 0.0056D0, 0.199D0, 1.23D0, 4.17D0, 165D0, 4*0D0,
+ & 0.325D0,0.325D0,0.5D0,1.6D0, 5.0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 1 0D0,0.11D0,0.16D0,0.048D0,0.50D0,0.45D0,0.55D0,0.60D0,0D0,0D0,
+ 2 0.2D0, 0.1D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 3 60*0D0,
+ 4 0.2D0, 0.5D0, 8*0D0,
+ 5 1800*0D0/
+ DATA ((VCKM(I,J),J=1,4),I=1,4)/
+ & 0.95113D0, 0.04884D0, 0.00003D0, 0.00000D0,
+ & 0.04884D0, 0.94940D0, 0.00176D0, 0.00000D0,
+ & 0.00003D0, 0.00176D0, 0.99821D0, 0.00000D0,
+ & 0.00000D0, 0.00000D0, 0.00000D0, 1.00000D0/
+
+C...PYDAT3, with particle decay parameters and data.
+ DATA (MDCY(I,1),I= 1, 500)/5*0,3*1,6*0,1,0,1,5*0,3*1,6*0,1,0,
+ &4*1,3*0,2*1,40*0,3*1,16*0,3*1,2*0,9*1,0,32*1,2*0,1,3*0,1,2*0,2*1,
+ &2*0,3*1,2*0,4*1,0,5*1,2*0,4*1,2*0,5*1,2*0,6*1,0,7*1,2*0,5*1,2*0,
+ &6*1,2*0,7*1,2*0,8*1,0,75*1,0,7*1,0,1,0,1,0,26*1,7*0,8*1,131*0/
+ DATA (MDCY(I,2),I= 1, 351)/1,9,17,25,33,41,56,66,2*0,76,80,82,
+ &87,89,143,145,150,2*0,153,162,174,190,210,6*0,289,0,311,334,420,
+ &503,3*0,530,539,40*0,540,541,545,16*0,554,556,561,570,579,581,
+ &583,590,598,604,613,615,617,620,630,636,639,650,656,667,673,736,
+ &739,747,808,810,818,851,853,857,858,861,863,899,900,908,944,945,
+ &953,992,993,997,1028,1029,1033,1034,1043,2*0,1045,3*0,1046,2*0,
+ &1049,1052,2*0,1053,1055,1058,2*0,1062,1063,1066,1069,0,1072,1077,
+ &1079,1082,1084,2*0,1088,1089,1090,1166,2*0,1170,1171,1172,1173,
+ &1174,2*0,1178,1179,1181,1182,1184,1188,0,1189,1193,1197,1201,
+ &1205,1209,1213,2*0,1217,1218,1219,1236,1245,2*0,1254,1255,1256,
+ &1257,1258,1267,2*0,1276,1277,1278,1279,1280,1289,1290,2*0,1299,
+ &1308,1317,1326,1335,1344,1353,1362,0,1371,1380,1389,1398,1407,
+ &1416,1425,1434,1443,1452,1453,1454,1455,1456,1461,1464,1466,1471,
+ &1473,1478,1485,1489,1491,1493,1495,1497,1499,1501,1503,1504,1506,
+ &1508,1510,1512,1514,1516,1518,1520,1522,1523,1525,1527,1541,1543,
+ &1545,1549,1551,1553,1555,1557,1559,1561,1563,1565,1567,1578,1592,
+ &1637,1661,1706,1730,1775,1802,1833,1859,1891,1917,1949,1975,2162,
+ &2331,2595,2826,3106,3402,0,3657,3706,3734,3783,3811,3860,3888,0,
+ &3924,0,3960,0,3996,4004,4012,4020,4217,4243,4270,4023,4029,4036,
+ &4043,4050,4056,4062,4071,4075,4079,4082,4084,4104,4126,4148,4170/
+ DATA (MDCY(I,2),I= 352, 500)/4185,4197,4204,7*0,4211,4212,4213,
+ &4214,4215,4216,4296,4322,131*0/
+ DATA (MDCY(I,3),I= 1, 500)/5*8,15,2*10,2*0,4,2,5,2,54,2,5,3,
+ &2*0,9,12,16,20,79,6*0,22,0,23,86,83,27,3*0,9,1,40*0,1,4,9,16*0,2,
+ &5,2*9,2*2,7,8,6,9,2*2,3,10,6,3,11,6,11,6,63,3,8,61,2,8,33,2,4,1,
+ &3,2,36,1,8,36,1,8,39,1,4,31,1,4,1,9,2,2*0,1,3*0,3,2*0,3,1,2*0,2,
+ &3,4,2*0,1,3*3,0,5,2,3,2,4,2*0,2*1,76,4,2*0,4*1,4,2*0,1,2,1,2,4,1,
+ &0,7*4,2*0,2*1,17,2*9,2*0,4*1,2*9,2*0,4*1,9,1,9,2*0,8*9,0,9*9,4*1,
+ &5,3,2,5,2,5,7,4,7*2,1,9*2,1,2*2,14,2*2,4,9*2,11,14,45,24,45,24,
+ &45,27,31,26,32,26,32,26,187,169,264,231,280,296,255,0,49,28,49,
+ &28,49,28,36,0,36,0,36,0,3*8,3,26,27,26,6,3*7,2*6,9,2*4,3,2,20,
+ &3*22,15,12,2*7,7*0,6*1,26,30,131*0/
+ DATA (MDME(I,1),I= 1,8000)/6*1,-1,7*1,-1,7*1,-1,7*1,-1,7*1,-1,
+ &7*1,-1,1,7*-1,8*1,2*-1,8*1,2*-1,73*1,-1,2*1,-1,5*1,0,2*-1,6*1,0,
+ &2*-1,3*1,-1,6*1,2*-1,6*1,2*-1,3*1,-1,3*1,-1,3*1,5*-1,3*1,-1,6*1,
+ &2*-1,3*1,-1,5*1,62*1,6*1,2*-1,6*1,8*-1,3*1,-1,3*1,-1,3*1,5*-1,
+ &3*1,4*-1,6*1,2*-1,3*1,-1,12*1,62*1,6*1,2*-1,3*1,-1,9*1,62*1,
+ &3*1,-1,3*1,-1,1,18*1,4*1,2*-1,2*1,-1,1249*1,2*-1,377*1,2*-1,
+ &1921*1,2*-1,6*1,2*-1,133*1,2*-1,6*1,2*-1,10*1,-1,3*1,-1,3*1,5*-1,
+ &3*1,-1,16*1,2*-1,6*1,2*-1,16*1,2*-1,6*1,2*-1,13*1,-1,3*1,-1,3*1,
+ &5*-1,3*1,-1,3649*0/
+ DATA (MDME(I,2),I= 1,8000)/43*102,4*0,102,0,6*53,3*102,4*0,102,
+ &2*0,3*102,4*0,102,2*0,6*102,42,6*102,2*42,2*0,8*41,2*0,36*41,
+ &8*102,0,102,0,102,2*0,21*102,8*32,8*0,16*32,4*0,8*32,9*0,62*53,
+ &8*32,14*0,16*32,7*0,8*32,16*0,62*53,8*32,13*0,62*53,4*32,5*0,
+ &18*53,6*32,4*0,12,2*42,2*11,9*42,0,2,3,15*0,4*42,5*0,3,12*0,2,
+ &3*0,1,0,3,16*0,2*3,15*0,2*42,2*3,18*0,2*3,3*0,1,11*0,22*42,41*0,
+ &2*3,9*0,16*42,45*0,3,10*0,10*42,20*0,2*13,6*0,12,2*0,12,0,12,
+ &14*42,16*0,48,3*13,2*42,9*0,14*42,16*0,48,3*13,2*42,9*0,14*42,
+ &19*0,48,3*13,2*42,6*0,2*11,28*42,5*0,32,3*0,4*32,2*4,0,32,45*0,
+ &14*42,52*0,10*13,2*42,2*11,4*0,2*42,2*11,6*0,2*42,2*11,0,2*42,
+ &2*11,2*42,2*11,2*42,2*11,2*42,2*11,2*42,2*11,2*42,2*11,2*42,2*11,
+ &2*0,3*42,8*0,48,3*13,20*42,4*0,18*42,4*0,9*42,0,162*42,50*0,2*12,
+ &17*0,2*32,33*0,12,9*0,32,2*0,12,11*0,4*32,2*4,5*0,2404*53,4*32,
+ &3*0,6*32,3*0,4*32,3*0,50*32,3*53,12*0,8*32,12*0,66*51,6*32,9*0,
+ &9*32,17*0,6*51,10*0,8*32,15*0,16*32,14*0,8*32,18*0,8*32,18*0,
+ &16*32,3653*0/
+ DATA (BRAT(I) ,I= 1, 348)/43*0D0,0.00003D0,0.001765D0,
+ &0.998205D0,35*0D0,1D0,6*0D0,0.1783D0,0.1735D0,0.1131D0,0.2494D0,
+ &0.003D0,0.09D0,0.0027D0,0.01D0,0.0014D0,0.0012D0,2*0.00025D0,
+ &0.0071D0,0.012D0,0.0004D0,0.00075D0,0.00006D0,2*0.00078D0,
+ &0.0034D0,0.08D0,0.011D0,0.0191D0,0.00006D0,0.005D0,0.0133D0,
+ &0.0067D0,0.0005D0,0.0035D0,0.0006D0,0.0015D0,0.00021D0,0.0002D0,
+ &0.00075D0,0.0001D0,0.0002D0,0.0011D0,3*0.0002D0,0.00022D0,
+ &0.0004D0,0.0001D0,2*0.00205D0,2*0.00069D0,0.00025D0,0.00051D0,
+ &0.00025D0,35*0D0,0.153995D0,0.11942D0,0.153984D0,0.119259D0,
+ &0.152272D0,3*0D0,0.033576D0,0.066806D0,0.033576D0,0.066806D0,
+ &0.0335D0,0.066806D0,2*0D0,0.321369D0,0.016494D0,2*0D0,0.016502D0,
+ &0.320615D0,2*0D0,0.00001D0,0.000591D0,6*0D0,2*0.108166D0,
+ &0.108087D0,0D0,0.000001D0,0D0,0.000353D0,0.04359D0,0.795274D0,
+ &4*0D0,0.000339D0,0.095746D0,0D0,0.060724D0,0.003054D0,0.000919D0,
+ &64*0D0,0.145835D0,0.113276D0,0.145835D0,0.113271D0,0.145781D0,
+ &0.049002D0,2*0D0,0.032025D0,0.063642D0,0.032025D0,0.063642D0,
+ &0.032022D0,0.063642D0,8*0D0,0.251225D0,0.0129D0,0.000006D0,0D0,
+ &0.0129D0,0.250764D0,0.00038D0,0D0,0.000008D0,0.000465D0,
+ &0.215418D0,5*0D0,2*0.085312D0,0.08531D0,7*0D0,0.000029D0,
+ &0.000536D0,5*0D0,0.000074D0,0D0,0.000417D0,0.000015D0,0.000061D0/
+ DATA (BRAT(I) ,I= 349, 655)/0.306789D0,0.689189D0,0D0,0.00289D0,
+ &69*0D0,0.000001D0,0.000072D0,0.001333D0,4*0D0,0.000001D0,
+ &0.000184D0,0D0,0.003108D0,0.000015D0,0.000003D0,2*0D0,0.995284D0,
+ &66*0D0,0.000014D0,0.082234D0,2*0D0,0.000013D0,0.003746D0,0D0,
+ &0.913992D0,18*0D0,3*0.215119D0,0.214724D0,2*0D0,0.06996D0,
+ &0.069959D0,0D0,2*1D0,2*0.08D0,0.76D0,0.08D0,2*0.105D0,0.04D0,
+ &0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,0.988D0,0.012D0,
+ &0.998739D0,0.00079D0,0.00038D0,0.000046D0,0.000045D0,2*0.34725D0,
+ &0.144D0,0.104D0,0.0245D0,2*0.01225D0,0.0028D0,0.0057D0,0.2112D0,
+ &0.1256D0,2*0.1939D0,2*0.1359D0,0.002D0,0.001D0,0.0006D0,
+ &0.999877D0,0.000123D0,0.99955D0,0.00045D0,2*0.34725D0,0.144D0,
+ &0.104D0,0.049D0,0.0028D0,0.0057D0,0.3923D0,0.321D0,0.2317D0,
+ &0.0478D0,0.0049D0,0.0013D0,0.0003D0,0.0007D0,0.89D0,0.08693D0,
+ &0.0221D0,0.00083D0,2*0.00007D0,0.564D0,0.282D0,0.072D0,0.028D0,
+ &0.023D0,2*0.0115D0,0.005D0,0.003D0,0.6861D0,0.3139D0,2*0.5D0,
+ &0.665D0,0.333D0,0.002D0,0.333D0,0.166D0,0.168D0,0.084D0,0.087D0,
+ &0.043D0,0.059D0,2*0.029D0,0.002D0,0.6352D0,0.2116D0,0.0559D0,
+ &0.0173D0,0.0482D0,0.0318D0,0.666D0,0.333D0,0.001D0,0.332D0,
+ &0.166D0,0.168D0,0.084D0,0.086D0,0.043D0,0.059D0,2*0.029D0,
+ &2*0.002D0,0.437D0,0.208D0,0.302D0,0.0302D0,0.0212D0,0.0016D0/
+ DATA (BRAT(I) ,I= 656, 831)/0.48947D0,0.34D0,3*0.043D0,0.027D0,
+ &0.0126D0,0.0013D0,0.0003D0,0.00025D0,0.00008D0,0.444D0,2*0.222D0,
+ &0.104D0,2*0.004D0,0.07D0,0.065D0,2*0.005D0,2*0.011D0,5*0.001D0,
+ &0.07D0,0.065D0,2*0.005D0,2*0.011D0,5*0.001D0,0.026D0,0.019D0,
+ &0.066D0,0.041D0,0.045D0,0.076D0,0.0073D0,2*0.0047D0,0.026D0,
+ &0.001D0,0.0006D0,0.0066D0,0.005D0,2*0.003D0,2*0.0006D0,2*0.001D0,
+ &0.006D0,0.005D0,0.012D0,0.0057D0,0.067D0,0.008D0,0.0022D0,
+ &0.027D0,0.004D0,0.019D0,0.012D0,0.002D0,0.009D0,0.0218D0,0.001D0,
+ &0.022D0,0.087D0,0.001D0,0.0019D0,0.0015D0,0.0028D0,0.683D0,
+ &0.306D0,0.011D0,0.3D0,0.15D0,0.16D0,0.08D0,0.13D0,0.06D0,0.08D0,
+ &0.04D0,0.034D0,0.027D0,2*0.002D0,2*0.004D0,2*0.002D0,0.034D0,
+ &0.027D0,2*0.002D0,2*0.004D0,2*0.002D0,0.0365D0,0.045D0,0.073D0,
+ &0.062D0,3*0.021D0,0.0061D0,0.015D0,0.025D0,0.0088D0,0.074D0,
+ &0.0109D0,0.0041D0,0.002D0,0.0035D0,0.0011D0,0.001D0,0.0027D0,
+ &2*0.0016D0,0.0018D0,0.011D0,0.0063D0,0.0052D0,0.018D0,0.016D0,
+ &0.0034D0,0.0036D0,0.0009D0,0.0006D0,0.015D0,0.0923D0,0.018D0,
+ &0.022D0,0.0077D0,0.009D0,0.0075D0,0.024D0,0.0085D0,0.067D0,
+ &0.0511D0,0.017D0,0.0004D0,0.0028D0,0.619D0,0.381D0,0.3D0,0.15D0,
+ &0.16D0,0.08D0,0.13D0,0.06D0,0.08D0,0.04D0,0.01D0,2*0.02D0,0.03D0,
+ &2*0.005D0,2*0.02D0,0.03D0,2*0.005D0,0.015D0,0.037D0,0.028D0/
+ DATA (BRAT(I) ,I= 832, 997)/0.079D0,0.095D0,0.052D0,0.0078D0,
+ &4*0.001D0,0.028D0,0.033D0,0.026D0,0.05D0,0.01D0,4*0.005D0,0.25D0,
+ &0.0952D0,0.94D0,0.06D0,2*0.4D0,2*0.1D0,1D0,0.0602D0,0.0601D0,
+ &0.8797D0,0.135D0,0.865D0,0.02D0,0.055D0,2*0.005D0,0.008D0,
+ &0.012D0,0.02D0,0.055D0,2*0.005D0,0.008D0,0.012D0,0.01D0,0.03D0,
+ &0.0035D0,0.011D0,0.0055D0,0.0042D0,0.009D0,0.018D0,0.015D0,
+ &0.0185D0,0.0135D0,0.025D0,0.0004D0,0.0007D0,0.0008D0,0.0014D0,
+ &0.0019D0,0.0025D0,0.4291D0,0.08D0,0.07D0,0.02D0,0.015D0,0.005D0,
+ &1D0,0.3D0,0.15D0,0.16D0,0.08D0,0.13D0,0.06D0,0.08D0,0.04D0,
+ &0.02D0,0.055D0,2*0.005D0,0.008D0,0.012D0,0.02D0,0.055D0,
+ &2*0.005D0,0.008D0,0.012D0,0.01D0,0.03D0,0.0035D0,0.011D0,
+ &0.0055D0,0.0042D0,0.009D0,0.018D0,0.015D0,0.0185D0,0.0135D0,
+ &0.025D0,0.0004D0,0.0007D0,0.0008D0,0.0014D0,0.0019D0,0.0025D0,
+ &0.4291D0,0.08D0,0.07D0,0.02D0,0.015D0,0.005D0,1D0,0.3D0,0.15D0,
+ &0.16D0,0.08D0,0.13D0,0.06D0,0.08D0,0.04D0,0.02D0,0.055D0,
+ &2*0.005D0,0.008D0,0.012D0,0.02D0,0.055D0,2*0.005D0,0.008D0,
+ &0.012D0,0.01D0,0.03D0,0.0035D0,0.011D0,0.0055D0,0.0042D0,0.009D0,
+ &0.018D0,0.015D0,0.0185D0,0.0135D0,0.025D0,2*0.0002D0,0.0007D0,
+ &2*0.0004D0,0.0014D0,0.001D0,0.0009D0,0.0025D0,0.4291D0,0.08D0,
+ &0.07D0,0.02D0,0.015D0,0.005D0,1D0,2*0.3D0,2*0.2D0,0.047D0/
+ DATA (BRAT(I) ,I= 998,1188)/0.122D0,0.006D0,0.012D0,0.035D0,
+ &0.012D0,0.035D0,0.003D0,0.007D0,0.15D0,0.037D0,0.008D0,0.002D0,
+ &0.05D0,0.015D0,0.003D0,0.001D0,0.014D0,0.042D0,0.014D0,0.042D0,
+ &0.24D0,0.065D0,0.012D0,0.003D0,0.001D0,0.002D0,0.001D0,0.002D0,
+ &0.014D0,0.003D0,1D0,2*0.3D0,2*0.2D0,1D0,0.0252D0,0.0248D0,
+ &0.0267D0,0.015D0,0.045D0,0.015D0,0.045D0,0.7743D0,0.029D0,0.22D0,
+ &0.78D0,1D0,0.331D0,0.663D0,0.006D0,0.663D0,0.331D0,0.006D0,1D0,
+ &0.999D0,0.001D0,0.88D0,2*0.06D0,0.639D0,0.358D0,0.002D0,0.001D0,
+ &1D0,0.88D0,2*0.06D0,0.516D0,0.483D0,0.001D0,0.88D0,2*0.06D0,
+ &0.9988D0,0.0001D0,0.0006D0,0.0004D0,0.0001D0,0.667D0,0.333D0,
+ &0.9954D0,0.0011D0,0.0035D0,0.333D0,0.667D0,0.676D0,0.234D0,
+ &0.085D0,0.005D0,2*1D0,0.018D0,2*0.005D0,0.003D0,0.002D0,
+ &2*0.006D0,0.018D0,2*0.005D0,0.003D0,0.002D0,2*0.006D0,0.0066D0,
+ &0.025D0,0.016D0,0.0088D0,2*0.005D0,0.0058D0,0.005D0,0.0055D0,
+ &4*0.004D0,2*0.002D0,2*0.004D0,0.003D0,0.002D0,2*0.003D0,
+ &3*0.002D0,2*0.001D0,0.002D0,2*0.001D0,2*0.002D0,0.0013D0,
+ &0.0018D0,5*0.001D0,4*0.003D0,2*0.005D0,2*0.002D0,2*0.001D0,
+ &2*0.002D0,2*0.001D0,0.2432D0,0.057D0,2*0.035D0,0.15D0,2*0.075D0,
+ &0.03D0,2*0.015D0,2*0.08D0,0.76D0,0.08D0,4*1D0,2*0.08D0,0.76D0,
+ &0.08D0,1D0,2*0.5D0,1D0,2*0.5D0,2*0.08D0,0.76D0,0.08D0,1D0/
+ DATA (BRAT(I) ,I=1189,1381)/2*0.08D0,0.76D0,3*0.08D0,0.76D0,
+ &3*0.08D0,0.76D0,3*0.08D0,0.76D0,3*0.08D0,0.76D0,3*0.08D0,0.76D0,
+ &3*0.08D0,0.76D0,0.08D0,2*1D0,2*0.105D0,0.04D0,0.0077D0,0.02D0,
+ &0.0235D0,0.0285D0,0.0435D0,0.0011D0,0.0022D0,0.0044D0,0.4291D0,
+ &0.08D0,0.07D0,0.02D0,0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,
+ &0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,
+ &0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,4*1D0,2*0.105D0,0.04D0,
+ &0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,0.04D0,
+ &0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,4*1D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,1D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0,
+ &0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,0.015D0,0.005D0,2*0.105D0/
+ DATA (BRAT(I) ,I=1382,1582)/0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,2*0.105D0,0.04D0,0.5D0,0.08D0,0.14D0,0.01D0,
+ &0.015D0,0.005D0,4*1D0,0.52D0,0.26D0,0.11D0,2*0.055D0,0.333D0,
+ &0.334D0,0.333D0,0.667D0,0.333D0,0.28D0,0.14D0,0.313D0,0.157D0,
+ &0.11D0,0.667D0,0.333D0,0.28D0,0.14D0,0.313D0,0.157D0,0.11D0,
+ &0.36D0,0.18D0,0.03D0,2*0.015D0,2*0.2D0,4*0.25D0,0.667D0,0.333D0,
+ &0.667D0,0.333D0,0.667D0,0.333D0,0.667D0,0.333D0,4*0.5D0,0.007D0,
+ &0.993D0,1D0,0.667D0,0.333D0,0.667D0,0.333D0,0.667D0,0.333D0,
+ &0.667D0,0.333D0,8*0.5D0,0.02D0,0.98D0,1D0,4*0.5D0,3*0.146D0,
+ &3*0.05D0,0.15D0,2*0.05D0,4*0.024D0,0.066D0,0.667D0,0.333D0,
+ &0.667D0,0.333D0,4*0.25D0,0.667D0,0.333D0,0.667D0,0.333D0,2*0.5D0,
+ &0.273D0,0.727D0,0.667D0,0.333D0,0.667D0,0.333D0,4*0.5D0,0.35D0,
+ &0.65D0,2*0.0083D0,0.1866D0,0.324D0,0.184D0,0.027D0,0.001D0,
+ &0.093D0,0.087D0,0.078D0,0.0028D0,3*0.014D0,0.008D0,0.024D0/
+ DATA (BRAT(I) ,I=1583,4150)/0.008D0,0.024D0,0.425D0,0.02D0,
+ &0.185D0,0.088D0,0.043D0,0.067D0,0.066D0,2404*0D0,0.024396D0,
+ &0.045285D0,0.83119D0,2*0D0,0.000349D0,0.09878D0,0D0,0.019884D0,
+ &0.02341D0,0.362776D0,0.550787D0,2*0D0,0.000152D0,0.042991D0,
+ &0.013695D0,0.025421D0,0.466595D0,2*0D0,0.000196D0,0.055451D0,
+ &0.438642D0,0.445781D0,0D0,0.554219D0,4*0.00335D0,0.522257D0,
+ &0.464343D0,6*0D0,1D0,6*0D0,1D0,4*0.013853D0,0.562703D0,
+ &0.376702D0,0.00518D0,4*0.006254D0,0.974985D0,7*0D0,4*0.148299D0,
+ &0.015351D0,0D0,0.182109D0,0.167099D0,0.042247D0,0.850973D0,
+ &0.005411D0,0.045025D0,0.098591D0,0.849898D0,0.021617D0,
+ &0.030018D0,0.098466D0,0.294448D0,0.10945D0,0.596102D0,0.389906D0,
+ &0.610094D0,3*0.0633D0,0.063299D0,0.063295D0,0.056281D0,2*0D0,
+ &6*0.020495D0,2*0D0,0.327919D0,0.04099D0,0.045236D0,0.090112D0,
+ &0.19874D0,0.010204D0,0.000003D0,0.010205D0,0.198356D0,0.000151D0,
+ &0.000006D0,0.000367D0,0.081967D0,0.19874D0,0.010204D0,0.000003D0,
+ &0.010205D0,0.198356D0,0.000151D0,0.000006D0,0.000367D0,
+ &0.081967D0,4*0D0,0.198776D0,0.010206D0,0.000003D0,0.010207D0,
+ &0.19839D0,0.000151D0,0.000006D0,0.000367D0,0.081893D0,0.198776D0,
+ &0.010206D0,0.000003D0,0.010207D0,0.19839D0,0.000151D0,0.000006D0,
+ &0.000367D0,0.081893D0,4*0D0,0.199344D0,0.010234D0,0.000003D0/
+ DATA (BRAT(I) ,I=4151,4281)/0.010236D0,0.198928D0,0.000149D0,
+ &0.000006D0,0.000368D0,0.080733D0,0.199344D0,0.010234D0,
+ &0.000003D0,0.010236D0,0.198928D0,0.000149D0,0.000006D0,
+ &0.000368D0,0.080733D0,4*0D0,0.184738D0,0.104588D0,0.184738D0,
+ &0.104587D0,0.184731D0,0.09582D0,0.022902D0,0.008429D0,0.015602D0,
+ &0.022902D0,0.008429D0,0.015602D0,0.022902D0,0.008429D0,
+ &0.015602D0,0.28959D0,0.01487D0,0.000008D0,0.01487D0,0.289061D0,
+ &0.000492D0,0.000009D0,0.000536D0,0.27911D0,2*0.037151D0,
+ &0.03715D0,0.090266D0,2*0.001805D0,0.090266D0,0.001805D0,
+ &0.812263D0,0.00179D0,0.090428D0,0.001809D0,0.001808D0,0.090428D0,
+ &0.001808D0,0.81372D0,0D0,6*1D0,0.095602D0,2*0.338272D0,
+ &0.156896D0,0.019193D0,0.017993D0,0.001168D0,0.001462D0,
+ &0.009608D0,0.003306D0,0.002132D0,0.003127D0,0.002132D0,
+ &0.003127D0,0.00213D0,3*0D0,0.001411D0,0.00045D0,0.001411D0,
+ &0.00045D0,0.001411D0,0.00045D0,2*0D0,0.097996D0,0.399787D0,
+ &0.262464D0,0.185427D0,0.022683D0,0.007648D0,0.004259D0,
+ &0.005925D0,0.000304D0,2*0D0,0.000304D0,0.005914D0,0.000002D0,
+ &2*0D0,0.000011D0,0.001258D0,5*0D0,3*0.002005D0,0D0,0.272178D0,
+ &0.022112D0,0.255165D0,0.015534D0,2*0.108965D0,0.031557D0,
+ &0.005562D0,0.044965D0,0.004674D0,0.007637D0,0.020597D0/
+ DATA (BRAT(I) ,I=4282,8000)/0.007636D0,0.020595D0,0.007616D0,
+ &3*0D0,0.017298D0,0.004782D0,0.017298D0,0.004782D0,0.017297D0,
+ &0.004782D0,2*0D0,0.055332D0,2*0.319757D0,0.121576D0,2*0.001556D0,
+ &4*0D0,0.0277D0,0.021481D0,0.027699D0,0.021477D0,0.027658D0,3*0D0,
+ &0.006071D0,0.01208D0,0.006071D0,0.01208D0,0.006069D0,0.01208D0,
+ &2*0D0,0.035891D0,0.209476D0,0.129084D0,0.286631D0,0.10742D0,
+ &0.109486D0,4*0D0,0.035282D0,0.001812D0,2*0D0,0.001812D0,
+ &0.035215D0,0.000021D0,0D0,0.000001D0,0.000065D0,0.011965D0,5*0D0,
+ &2*0.011947D0,0.011946D0,0D0,3649*0D0/
+ DATA (KFDP(I,1),I= 1, 377)/21,22,23,4*-24,25,21,22,23,4*24,25,
+ &21,22,23,4*-24,25,21,22,23,4*24,25,21,22,23,4*-24,25,21,22,23,
+ &4*24,25,37,1000022,1000023,1000025,1000035,1000021,1000039,21,22,
+ &23,4*-24,25,2*-37,21,22,23,4*24,25,2*37,22,23,-24,25,23,24,-12,
+ &22,23,-24,25,23,24,-12,-14,48*16,22,23,-24,25,23,24,22,23,-24,25,
+ &-37,23,24,37,1,2,3,4,5,6,7,8,21,1,2,3,4,5,6,7,8,11,13,15,17,1,2,
+ &3,4,5,6,7,8,11,12,13,14,15,16,17,18,4*-1,4*-3,4*-5,4*-7,-11,-13,
+ &-15,-17,1,2,3,4,5,6,7,8,11,13,15,17,21,2*22,23,24,1000022,
+ &2*1000023,3*1000025,4*1000035,2*1000024,2*1000037,1000001,
+ &2000001,1000001,-1000001,1000002,2000002,1000002,-1000002,
+ &1000003,2000003,1000003,-1000003,1000004,2000004,1000004,
+ &-1000004,1000005,2000005,1000005,-1000005,1000006,2000006,
+ &1000006,-1000006,1000011,2000011,1000011,-1000011,1000012,
+ &2000012,1000012,-1000012,1000013,2000013,1000013,-1000013,
+ &1000014,2000014,1000014,-1000014,1000015,2000015,1000015,
+ &-1000015,1000016,2000016,1000016,-1000016,1,2,3,4,5,6,7,8,11,12,
+ &13,14,15,16,17,18,24,37,2*23,25,35,4*-1,4*-3,4*-5,4*-7,-11,-13,
+ &-15,-17,3*24,1,2,3,4,5,6,7,8,11,13,15,17,21,2*22,23,24,23,25,24,
+ &37,23,25,36,1000022,2*1000023,3*1000025,4*1000035,2*1000024,
+ &2*1000037,1000001,2000001,1000001,-1000001,1000002,2000002/
+ DATA (KFDP(I,1),I= 378, 580)/1000002,-1000002,1000003,2000003,
+ &1000003,-1000003,1000004,2000004,1000004,-1000004,1000005,
+ &2000005,1000005,-1000005,1000006,2000006,1000006,-1000006,
+ &1000011,2000011,1000011,-1000011,1000012,2000012,1000012,
+ &-1000012,1000013,2000013,1000013,-1000013,1000014,2000014,
+ &1000014,-1000014,1000015,2000015,1000015,-1000015,1000016,
+ &2000016,1000016,-1000016,1,2,3,4,5,6,7,8,11,13,15,17,21,2*22,23,
+ &24,23,25,24,37,1000022,2*1000023,3*1000025,4*1000035,2*1000024,
+ &2*1000037,1000001,2000001,1000001,-1000001,1000002,2000002,
+ &1000002,-1000002,1000003,2000003,1000003,-1000003,1000004,
+ &2000004,1000004,-1000004,1000005,2000005,1000005,-1000005,
+ &1000006,2000006,1000006,-1000006,1000011,2000011,1000011,
+ &-1000011,1000012,2000012,1000012,-1000012,1000013,2000013,
+ &1000013,-1000013,1000014,2000014,1000014,-1000014,1000015,
+ &2000015,1000015,-1000015,1000016,2000016,1000016,-1000016,-1,-3,
+ &-5,-7,-11,-13,-15,-17,24,2*1000022,2*1000023,2*1000025,2*1000035,
+ &1000006,2000006,1000006,2000006,-1000001,-1000003,-1000011,
+ &-1000013,-1000015,-2000015,1,2,3,4,5,6,11,13,15,2,82,-11,-13,2*2,
+ &-12,-14,-16,2*-2,2*-4,-2,-4,2*22,211,111,221,13,11,213,-213,221,
+ &223,321,130,310,111,331,111,211,-12,12,-14,14,211,111,22,-13,-11/
+ DATA (KFDP(I,1),I= 581, 992)/2*211,213,113,221,223,321,211,331,
+ &22,111,211,2*22,211,22,111,211,22,211,221,111,11,211,111,2*211,
+ &321,130,310,221,111,211,111,130,310,321,2*311,321,311,323,313,
+ &323,313,321,3*311,-13,3*211,12,14,311,2*321,311,321,313,323,313,
+ &323,311,4*321,211,111,3*22,111,321,130,-213,113,213,211,22,111,
+ &11,13,211,321,130,310,221,211,111,11*-11,11*-13,-311,-313,-311,
+ &-313,-20313,2*-311,-313,-311,-313,2*111,2*221,2*331,2*113,2*223,
+ &2*333,-311,-313,2*-321,211,-311,-321,333,-311,-313,-321,211,
+ &2*-321,2*-311,-321,211,113,421,2*411,421,411,423,413,423,413,421,
+ &411,8*-11,8*-13,-321,-323,-321,-323,-311,2*-313,-311,-313,2*-311,
+ &-321,-10323,-321,-323,-321,-311,2*-313,211,111,333,3*-321,-311,
+ &-313,-321,-313,310,333,211,2*-321,-311,-313,-311,211,-321,3*-311,
+ &211,113,321,2*421,411,421,413,423,413,423,411,421,-15,5*-11,
+ &5*-13,221,331,333,221,331,333,10221,211,213,211,213,321,323,321,
+ &323,2212,221,331,333,221,2*2,2*431,421,411,423,413,82,11,13,82,
+ &443,82,6*12,6*14,2*16,3*-411,3*-413,2*-411,2*-413,2*441,2*443,
+ &2*20443,2*2,2*4,2,4,511,521,511,523,513,523,513,521,511,6*12,
+ &6*14,2*16,3*-421,3*-423,2*-421,2*-423,2*441,2*443,2*20443,2*2,
+ &2*4,2,4,521,511,521,513,523,513,523,511,521,6*12,6*14,2*16,
+ &3*-431,3*-433,2*-431,2*-433,3*441,3*443,3*20443,2*2,2*4,2,4,531/
+ DATA (KFDP(I,1),I= 993,1402)/521,511,523,513,16,2*4,2*12,2*14,
+ &2*16,4*2,4*4,2*-11,2*-13,2*-1,2*-3,2*-11,2*-13,2*-1,541,511,521,
+ &513,523,21,11,13,15,1,2,3,4,21,22,553,21,2112,2212,2*2112,2212,
+ &2112,2*2212,2112,-12,3122,3212,3112,2212,2*2112,-12,2*3122,3222,
+ &3112,2212,2112,2212,3122,3222,3212,3122,3112,-12,-14,-12,3322,
+ &3312,2*3122,3212,3322,3312,3122,3322,3312,-12,2*4122,7*-11,7*-13,
+ &2*2224,2*2212,2*2214,2*3122,2*3212,2*3214,5*3222,4*3224,2*3322,
+ &3324,2*2224,7*2212,5*2214,2*2112,2*2114,2*3122,2*3212,2*3214,
+ &2*3222,2*3224,4*2,3,2*2,1,2*2,-11,-13,2*2,4*4122,-11,-13,2*2,
+ &3*4132,3*4232,-11,-13,2*2,4332,-11,-13,2*2,-11,-13,2*2,-11,-13,
+ &2*2,-11,-13,2*2,-11,-13,2*2,-11,-13,2*2,-11,-13,2*2,2*5122,-12,
+ &-14,-16,5*4122,441,443,20443,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,
+ &2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,4*5122,-12,-14,-16,2*-2,
+ &2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,2*5132,2*5232,-12,-14,-16,
+ &2*-2,2*-4,-2,-4,5332,-12,-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,
+ &2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,
+ &2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,
+ &-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,
+ &-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,
+ &2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2/
+ DATA (KFDP(I,1),I=1403,1713)/2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,
+ &-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,-12,
+ &-14,-16,2*-2,2*-4,-2,-4,-12,-14,-16,2*-2,2*-4,-2,-4,221,223,221,
+ &223,211,111,321,130,310,213,113,-213,321,311,321,311,323,313,
+ &2*311,321,311,321,313,323,321,211,111,321,130,310,2*211,313,-313,
+ &323,-323,421,411,423,413,411,421,413,423,411,421,423,413,443,
+ &2*82,521,511,523,513,511,521,513,523,521,511,523,513,511,521,513,
+ &523,553,2*21,213,-213,113,213,10211,10111,-10211,2*221,213,2*113,
+ &-213,2*321,2*311,113,323,2*313,323,313,-313,323,-323,423,2*413,
+ &2*423,413,443,82,523,2*513,2*523,2*513,523,553,21,11,13,82,4*443,
+ &10441,20443,445,441,11,13,15,1,2,3,4,21,22,2*553,10551,20553,555,
+ &1000039,-1000024,-1000037,1000022,1000023,1000025,1000035,
+ &1000002,2000002,1000002,2000002,1000021,3*-12,3*-14,3*-16,12,11,
+ &12,11,12,11,14,13,14,13,14,13,16,15,16,15,16,15,2*-2,2*-4,2*-6,
+ &1000039,1000024,1000037,1000022,1000023,1000025,1000035,1000001,
+ &2000001,1000001,2000001,1000021,3*-11,3*-13,3*-15,2*-1,-3,
+ &1000039,-1000024,-1000037,1000022,1000023,1000025,1000035,
+ &1000004,2000004,1000004,2000004,1000021,3*-12,3*-14,3*-16,12,11,
+ &12,11,12,11,14,13,14,13,14,13,16,15,16,15,16,15,2*-2,2*-4,2*-6,
+ &1000039,1000024,1000037,1000022,1000023,1000025,1000035,1000003/
+ DATA (KFDP(I,1),I=1714,1984)/2000003,1000003,2000003,1000021,
+ &3*-11,3*-13,3*-15,2*-1,-3,1000039,-1000024,-1000037,1000022,
+ &1000023,1000025,1000035,1000006,2000006,1000006,2000006,1000021,
+ &3*-12,3*-14,3*-16,12,11,12,11,12,11,14,13,14,13,14,13,16,15,16,
+ &15,16,15,2*-2,2*-4,2*-6,1000039,1000024,1000037,1000022,1000023,
+ &1000025,1000035,1000005,2000005,1000005,2000005,1000021,1000022,
+ &1000016,-1000015,3*-11,3*-13,3*-15,2*-1,-3,1000039,-1000024,
+ &-1000037,1000022,1000023,1000025,1000035,1000012,2000012,1000012,
+ &2*12,2*14,2*16,3*-14,3*-16,3*-2,3*-4,3*-6,1000039,1000024,
+ &1000037,1000022,1000023,1000025,1000035,1000011,2000011,1000011,
+ &2000011,3*-13,3*-15,3*-1,3*-3,3*-5,1000039,-1000024,-1000037,
+ &1000022,1000023,1000025,1000035,1000014,2000014,1000014,2000014,
+ &2*12,2*14,2*16,3*-12,3*-16,3*-2,3*-4,3*-6,1000039,1000024,
+ &1000037,1000022,1000023,1000025,1000035,1000013,2000013,1000013,
+ &2000013,3*-11,3*-15,3*-1,3*-3,3*-5,1000039,-1000024,-1000037,
+ &1000022,1000023,1000025,1000035,1000016,2000016,1000016,2000016,
+ &2*12,2*14,2*16,3*-12,3*-14,3*-2,3*-4,3*-6,1000039,1000024,
+ &1000037,1000022,1000023,1000025,1000035,1000015,2000015,1000015,
+ &2000015,3*-11,3*-13,3*-1,3*-3,3*-5,1000039,1000001,-1000001,
+ &2000001,-2000001,1000002,-1000002,2000002,-2000002,1000003/
+ DATA (KFDP(I,1),I=1985,2321)/-1000003,2000003,-2000003,1000004,
+ &-1000004,2000004,-2000004,1000005,-1000005,2000005,-2000005,
+ &1000006,-1000006,2000006,-2000006,6*1000022,6*1000023,6*1000025,
+ &6*1000035,1000024,-1000024,1000024,-1000024,1000024,-1000024,
+ &1000037,-1000037,1000037,-1000037,1000037,-1000037,-12,12,-11,11,
+ &-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,
+ &-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-14,14,-13,13,
+ &-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,
+ &-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-16,16,-15,15,
+ &-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,
+ &-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-2,2,-2,2,-2,2,
+ &-4,4,-4,4,-4,4,-6,6,-6,6,-6,6,5*1000039,4,1,-12,12,-12,12,-12,12,
+ &-12,12,-12,12,-12,12,-14,14,-14,14,-14,14,-14,14,-14,14,-14,14,
+ &-16,16,-16,16,-16,16,-16,16,-16,16,-16,16,-12,12,-11,11,-12,12,
+ &-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,
+ &-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-14,14,-13,13,-14,14,
+ &-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,
+ &-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-16,16,-15,15,-16,16,
+ &-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,
+ &-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-2,2,-2,2,-2,2,-4,4,-4/
+ DATA (KFDP(I,1),I=2322,2573)/4,-4,4,-6,6,-6,6,-6,6,5*1000039,
+ &16*1000022,1000024,-1000024,1000024,-1000024,1000024,-1000024,
+ &1000024,-1000024,1000024,-1000024,1000024,-1000024,1000037,
+ &-1000037,1000037,-1000037,1000037,-1000037,1000037,-1000037,
+ &1000037,-1000037,1000037,-1000037,1000024,-1000024,1000037,
+ &-1000037,1000001,-1000001,2000001,-2000001,1000002,-1000002,
+ &2000002,-2000002,1000003,-1000003,2000003,-2000003,1000004,
+ &-1000004,2000004,-2000004,1000005,-1000005,2000005,-2000005,
+ &1000006,-1000006,2000006,-2000006,1000011,-1000011,2000011,
+ &-2000011,1000012,-1000012,2000012,-2000012,1000013,-1000013,
+ &2000013,-2000013,1000014,-1000014,2000014,-2000014,1000015,
+ &-1000015,2000015,-2000015,1000016,-1000016,2000016,-2000016,
+ &5*1000021,-12,12,-12,12,-12,12,-12,12,-12,12,-12,12,-14,14,-14,
+ &14,-14,14,-14,14,-14,14,-14,14,-16,16,-16,16,-16,16,-16,16,-16,
+ &16,-16,16,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,
+ &11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,
+ &12,-11,11,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,
+ &13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,
+ &14,-13,13,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,
+ &15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16/
+ DATA (KFDP(I,1),I=2574,2892)/16,-15,15,-2,2,-2,2,-2,2,-4,4,-4,4,
+ &-4,4,-6,6,-6,6,-6,6,2*1000039,6*1000022,6*1000023,6*1000025,
+ &6*1000035,1000022,1000023,1000025,1000035,1000002,2000002,
+ &-1000001,-2000001,1000004,2000004,-1000003,-2000003,1000006,
+ &2000006,-1000005,-2000005,1000012,2000012,-1000011,-2000011,
+ &1000014,2000014,-1000013,-2000013,1000016,2000016,-1000015,
+ &-2000015,2*1000021,-12,12,-11,-12,12,-11,-12,12,-11,-12,12,-11,
+ &-12,12,-11,-12,12,-11,-14,-13,-14,-13,-14,-13,-14,14,-13,-14,14,
+ &-13,-14,14,-13,-16,-15,-16,-15,-16,-15,-16,-15,-16,-15,-16,-15,
+ &-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,
+ &-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,-14,2*-13,14,
+ &-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,
+ &-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,-16,2*-15,16,-16,2*-15,16,
+ &-16,2*-15,16,-16,2*-15,16,-16,2*-15,16,-16,2*-15,16,-16,2*-15,16,
+ &-16,2*-15,16,-16,2*-15,16,2,-1,2,-1,2*2,-1,2,-1,3*2,-1,2*4,-3,
+ &3*4,-3,2*6,5*1000039,16*1000022,16*1000023,1000024,-1000024,
+ &1000024,-1000024,1000024,-1000024,1000024,-1000024,1000024,
+ &-1000024,1000024,-1000024,1000037,-1000037,1000037,-1000037,
+ &1000037,-1000037,1000037,-1000037,1000037,-1000037,1000037,
+ &-1000037,1000024,-1000024,1000037,-1000037,1000001,-1000001/
+ DATA (KFDP(I,1),I=2893,3182)/2000001,-2000001,1000002,-1000002,
+ &2000002,-2000002,1000003,-1000003,2000003,-2000003,1000004,
+ &-1000004,2000004,-2000004,1000005,-1000005,2000005,-2000005,
+ &1000006,-1000006,2000006,-2000006,1000011,-1000011,2000011,
+ &-2000011,1000012,-1000012,2000012,-2000012,1000013,-1000013,
+ &2000013,-2000013,1000014,-1000014,2000014,-2000014,1000015,
+ &-1000015,2000015,-2000015,1000016,-1000016,2000016,-2000016,
+ &5*1000021,-12,12,-12,12,-12,12,-12,12,-12,12,-12,12,-14,14,-14,
+ &14,-14,14,-14,14,-14,14,-14,14,-16,16,-16,16,-16,16,-16,16,-16,
+ &16,-16,16,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,
+ &11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,
+ &12,-11,11,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,
+ &13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,
+ &14,-13,13,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,
+ &15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,
+ &16,-15,15,-2,2,-2,2,-2,2,-4,4,-4,4,-4,4,-6,6,-6,6,-6,6,5*1000039,
+ &16*1000022,16*1000023,16*1000025,1000024,-1000024,1000024,
+ &-1000024,1000024,-1000024,1000024,-1000024,1000024,-1000024,
+ &1000024,-1000024,1000037,-1000037,1000037,-1000037,1000037,
+ &-1000037,1000037,-1000037,1000037,-1000037,1000037,-1000037/
+ DATA (KFDP(I,1),I=3183,3459)/1000024,-1000024,1000037,-1000037,
+ &1000001,-1000001,2000001,-2000001,1000002,-1000002,2000002,
+ &-2000002,1000003,-1000003,2000003,-2000003,1000004,-1000004,
+ &2000004,-2000004,1000005,-1000005,2000005,-2000005,1000006,
+ &-1000006,2000006,-2000006,1000011,-1000011,2000011,-2000011,
+ &1000012,-1000012,2000012,-2000012,1000013,-1000013,2000013,
+ &-2000013,1000014,-1000014,2000014,-2000014,1000015,-1000015,
+ &2000015,-2000015,1000016,-1000016,2000016,-2000016,5*1000021,-12,
+ &12,-12,12,-12,12,-12,12,-12,12,-12,12,-14,14,-14,14,-14,14,-14,
+ &14,-14,14,-14,14,-16,16,-16,16,-16,16,-16,16,-16,16,-16,16,-12,
+ &12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,
+ &11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-12,12,-11,11,-14,
+ &14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,
+ &13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-14,14,-13,13,-16,
+ &16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,
+ &15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-16,16,-15,15,-2,2,
+ &-2,2,-2,2,-4,4,-4,4,-4,4,-6,6,-6,6,-6,6,2*1000039,15*1000024,
+ &6*1000022,6*1000023,6*1000025,6*1000035,1000022,1000023,1000025,
+ &1000035,1000002,2000002,-1000001,-2000001,1000004,2000004,
+ &-1000003,-2000003,1000006,2000006,-1000005,-2000005,1000012/
+ DATA (KFDP(I,1),I=3460,3782)/2000012,-1000011,-2000011,1000014,
+ &2000014,-1000013,-2000013,1000016,2000016,-1000015,-2000015,
+ &2*1000021,-12,12,-11,-12,12,-11,-12,12,-11,-12,12,-11,-12,12,-11,
+ &-12,12,-11,-14,14,-13,-14,14,-13,-14,14,-13,-14,14,-13,-14,14,
+ &-13,-14,14,-13,-16,16,-15,-16,16,-15,-16,16,-15,-16,16,-15,-16,
+ &16,-15,-16,16,-15,-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,-12,
+ &2*-11,12,-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,-12,2*-11,12,-12,
+ &2*-11,12,-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,-14,
+ &2*-13,14,-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,-14,2*-13,14,-16,
+ &2*-15,16,-16,2*-15,16,-16,2*-15,16,-16,2*-15,16,-16,2*-15,16,-16,
+ &2*-15,16,-16,2*-15,16,-16,2*-15,16,-16,2*-15,16,2,-1,2,-1,2*2,-1,
+ &2,-1,3*2,-1,2*4,-3,3*4,-3,2*6,1000039,-1000024,-1000037,1000022,
+ &1000023,1000025,1000035,4*1000001,1000002,2000002,1000002,
+ &2000002,1000021,3*-12,3*-14,3*-16,12,11,12,11,12,11,14,13,14,13,
+ &14,13,16,15,16,15,16,15,2*-2,2*-4,2*-6,1000039,1000024,1000037,
+ &1000022,1000023,1000025,1000035,4*1000002,1000001,2000001,
+ &1000001,2000001,1000021,3*-11,3*-13,3*-15,2*-1,-3,1000039,
+ &-1000024,-1000037,1000022,1000023,1000025,1000035,4*1000003,
+ &1000004,2000004,1000004,2000004,1000021,3*-12,3*-14,3*-16,12,11,
+ &12,11,12,11,14,13,14,13,14,13,16,15,16,15,16,15,2*-2,2*-4,2*-6/
+ DATA (KFDP(I,1),I=3783,4156)/1000039,1000024,1000037,1000022,
+ &1000023,1000025,1000035,4*1000004,1000003,2000003,1000003,
+ &2000003,1000021,3*-11,3*-13,3*-15,2*-1,-3,1000039,-1000024,
+ &-1000037,1000022,1000023,1000025,1000035,4*1000005,1000006,
+ &2000006,1000006,2000006,1000021,3*-12,3*-14,3*-16,12,11,12,11,12,
+ &11,14,13,14,13,14,13,16,15,16,15,16,15,2*-2,2*-4,2*-6,1000039,
+ &1000024,1000037,1000022,1000023,1000025,1000035,4*1000006,
+ &1000005,2000005,1000005,2000005,1000021,3*-11,3*-13,3*-15,2*-1,
+ &-3,1000039,-1000024,-1000037,1000022,1000023,1000025,1000035,
+ &4*1000011,1000012,2000012,1000012,2000012,2*12,2*14,2*16,3*-14,
+ &3*-16,3*-2,3*-4,3*-6,1000039,-1000024,-1000037,1000022,1000023,
+ &1000025,1000035,4*1000013,1000014,2000014,1000014,2000014,2*12,
+ &2*14,2*16,3*-12,3*-16,3*-2,3*-4,3*-6,1000039,-1000024,-1000037,
+ &1000022,1000023,1000025,1000035,4*1000015,1000016,2000016,
+ &1000016,2000016,2*12,2*14,2*16,3*-12,3*-14,3*-2,3*-4,3*-6,3,4,5,
+ &6,11,13,15,21,2*4,2,4,24,-11,-13,-15,3,4,5,6,11,13,15,21,5,6,21,
+ &1,2,3,4,5,6,1,2,3,4,5,6,21,1,2,3,4,5,6,21,1,2,3,4,5,6,21,1,2,3,4,
+ &5,6,1,2,3,4,5,6,1,2,3,4,5,6,21,3100111,3200111,21,22,23,-24,21,
+ &22,23,24,22,23,-24,23,24,1,2,3,4,5,6,7,8,11,12,13,14,15,16,17,18,
+ &21,22,23,24,9*11,9*-11,2*11,2*-11,9*13,9*-13,2*13,2*-13,9*15/
+ DATA (KFDP(I,1),I=4157,8000)/9*-15,2*15,2*-15,1,2,3,4,5,6,11,12,
+ &9900012,13,14,9900014,15,16,9900016,3*-1,3*-3,3*-5,-11,-13,-15,
+ &3*-11,2*-13,-15,24,3*-11,2*-13,-15,9900024,3*443,3*553,2*24,
+ &2*3000211,2*22,2*23,22,23,1,2,3,4,5,6,7,8,11,12,13,14,15,16,17,
+ &18,2*24,3*3000211,2*24,4*-1,4*-3,4*-5,4*-7,-11,-13,-15,-17,22,23,
+ &22,23,24,3000211,24,3000211,22,23,1,2,3,4,5,6,7,8,11,12,13,14,15,
+ &16,17,18,2*24,-24,23,2*22,24,-24,2*23,1,2,3,4,5,6,7,8,11,12,13,
+ &14,15,16,17,18,2*22,23,2*24,23,22,2*24,23,4*-1,4*-3,4*-5,4*-7,
+ &-11,-13,-15,-17,3649*0/
+ DATA (KFDP(I,2),I= 1, 339)/3*1,2,4,6,8,1,3*2,1,3,5,7,2,3*3,2,4,
+ &6,8,3,3*4,1,3,5,7,4,3*5,2,4,6,8,5,3*6,1,3,5,7,6,5,6*1000006,3*7,
+ &2,4,6,8,7,4,6,3*8,1,3,5,7,8,5,7,2*11,12,11,12,2*11,2*13,14,13,14,
+ &13,11,13,-211,-213,-211,-213,-211,-213,-211,-213,2*-211,-321,
+ &-323,-321,2*-323,3*-321,4*-211,-213,-211,-213,-211,-213,-211,
+ &-213,-211,-213,3*-211,-213,4*-211,-323,-321,2*-211,2*-321,3*-211,
+ &2*15,16,15,16,15,2*17,18,17,2*18,2*17,-1,-2,-3,-4,-5,-6,-7,-8,21,
+ &-1,-2,-3,-4,-5,-6,-7,-8,-11,-13,-15,-17,-1,-2,-3,-4,-5,-6,-7,-8,
+ &-11,-12,-13,-14,-15,-16,-17,-18,2,4,6,8,2,4,6,8,2,4,6,8,2,4,6,8,
+ &12,14,16,18,-1,-2,-3,-4,-5,-6,-7,-8,-11,-13,-15,-17,21,22,2*23,
+ &-24,2*1000022,1000023,1000022,1000023,1000025,1000022,1000023,
+ &1000025,1000035,-1000024,-1000037,-1000024,-1000037,-1000001,
+ &2*-2000001,2000001,-1000002,2*-2000002,2000002,-1000003,
+ &2*-2000003,2000003,-1000004,2*-2000004,2000004,-1000005,
+ &2*-2000005,2000005,-1000006,2*-2000006,2000006,-1000011,
+ &2*-2000011,2000011,-1000012,2*-2000012,2000012,-1000013,
+ &2*-2000013,2000013,-1000014,2*-2000014,2000014,-1000015,
+ &2*-2000015,2000015,-1000016,2*-2000016,2000016,-1,-2,-3,-4,-5,-6,
+ &-7,-8,-11,-12,-13,-14,-15,-16,-17,-18,-24,-37,22,25,2*36,2,4,6,8,
+ &2,4,6,8,2,4,6,8,2,4,6,8,12,14,16,18,23,22,25,-1,-2,-3,-4,-5,-6/
+ DATA (KFDP(I,2),I= 340, 533)/-7,-8,-11,-13,-15,-17,21,22,2*23,
+ &-24,2*25,-37,-24,3*36,2*1000022,1000023,1000022,1000023,1000025,
+ &1000022,1000023,1000025,1000035,-1000024,-1000037,-1000024,
+ &-1000037,-1000001,2*-2000001,2000001,-1000002,2*-2000002,2000002,
+ &-1000003,2*-2000003,2000003,-1000004,2*-2000004,2000004,-1000005,
+ &2*-2000005,2000005,-1000006,2*-2000006,2000006,-1000011,
+ &2*-2000011,2000011,-1000012,2*-2000012,2000012,-1000013,
+ &2*-2000013,2000013,-1000014,2*-2000014,2000014,-1000015,
+ &2*-2000015,2000015,-1000016,2*-2000016,2000016,-1,-2,-3,-4,-5,-6,
+ &-7,-8,-11,-13,-15,-17,21,22,2*23,-24,2*25,-37,-24,2*1000022,
+ &1000023,1000022,1000023,1000025,1000022,1000023,1000025,1000035,
+ &-1000024,-1000037,-1000024,-1000037,-1000001,2*-2000001,2000001,
+ &-1000002,2*-2000002,2000002,-1000003,2*-2000003,2000003,-1000004,
+ &2*-2000004,2000004,-1000005,2*-2000005,2000005,-1000006,
+ &2*-2000006,2000006,-1000011,2*-2000011,2000011,-1000012,
+ &2*-2000012,2000012,-1000013,2*-2000013,2000013,-1000014,
+ &2*-2000014,2000014,-1000015,2*-2000015,2000015,-1000016,
+ &2*-2000016,2000016,2,4,6,8,12,14,16,18,25,1000024,1000037,
+ &1000024,1000037,1000024,1000037,1000024,1000037,2*-1000005,
+ &2*-2000005,1000002,1000004,1000012,1000014,2*1000016,-3,-4,-5,-6/
+ DATA (KFDP(I,2),I= 534, 938)/-7,-8,-13,-15,-17,11,-82,12,14,-1,
+ &-3,11,13,15,1,4,3,4,1,3,22,11,-211,2*22,-13,-11,-211,211,111,211,
+ &-321,130,310,22,2*111,-211,11,-11,13,-13,-211,111,22,14,12,111,
+ &22,111,3*211,-311,22,211,22,111,-211,211,11,-211,13,22,-211,111,
+ &-211,22,111,-11,-211,111,2*-211,-321,130,310,221,111,-211,111,
+ &2*0,-211,111,22,-211,111,-211,111,-211,211,-213,113,223,221,14,
+ &111,211,111,-11,-13,211,111,22,211,111,211,111,2*211,213,113,223,
+ &221,22,-211,111,113,223,22,111,-321,310,211,111,2*-211,221,22,
+ &-11,-13,-211,-321,130,310,221,-211,111,11*12,11*14,2*211,2*213,
+ &211,20213,2*321,2*323,211,213,211,213,211,213,211,213,211,213,
+ &211,213,3*211,213,211,2*321,8*211,2*113,3*211,111,22,211,111,211,
+ &111,4*211,8*12,8*14,2*211,2*213,2*111,221,2*113,223,333,20213,
+ &211,2*321,323,2*311,313,-211,111,113,2*211,321,2*211,311,321,310,
+ &211,-211,4*211,321,4*211,113,2*211,-321,111,22,-211,111,-211,111,
+ &-211,211,-211,211,16,5*12,5*14,3*211,3*213,211,2*111,2*113,
+ &2*-311,2*-313,-2112,3*321,323,2*-1,22,111,321,311,321,311,-82,
+ &-11,-13,-82,22,-82,6*-11,6*-13,2*-15,211,213,20213,211,213,20213,
+ &431,433,431,433,311,313,311,313,311,313,-1,-4,-3,-4,-1,-3,22,
+ &-211,111,-211,111,-211,211,-211,211,6*-11,6*-13,2*-15,211,213,
+ &20213,211,213,20213,431,433,431,433,321,323,321,323,321,323,-1/
+ DATA (KFDP(I,2),I= 939,1352)/-4,-3,-4,-1,-3,22,211,111,211,111,
+ &4*211,6*-11,6*-13,2*-15,211,213,20213,211,213,20213,431,433,431,
+ &433,221,331,333,221,331,333,221,331,333,-1,-4,-3,-4,-1,-3,22,
+ &-321,-311,-321,-311,-15,-3,-1,2*-11,2*-13,2*-15,-1,-4,-3,-4,-3,
+ &-4,-1,-4,2*12,2*14,2,3,2,3,2*12,2*14,2,1,22,411,421,411,421,21,
+ &-11,-13,-15,-1,-2,-3,-4,2*21,22,21,2*-211,111,22,111,211,22,211,
+ &-211,11,2*-211,111,-211,111,22,11,22,111,-211,211,111,211,22,211,
+ &111,211,-211,22,11,13,11,-211,2*111,2*22,111,211,-321,-211,111,
+ &11,2*-211,7*12,7*14,-321,-323,-311,-313,-311,-313,211,213,211,
+ &213,211,213,111,221,331,113,223,111,221,113,223,321,323,321,-211,
+ &-213,111,221,331,113,223,333,10221,111,221,331,113,223,211,213,
+ &211,213,321,323,321,323,321,323,311,313,311,313,2*-1,-3,-1,2203,
+ &3201,3203,2203,2101,2103,12,14,-1,-3,2*111,2*211,12,14,-1,-3,22,
+ &111,2*22,111,22,12,14,-1,-3,22,12,14,-1,-3,12,14,-1,-3,12,14,-1,
+ &-3,12,14,-1,-3,12,14,-1,-3,12,14,-1,-3,12,14,-1,-3,2*-211,11,13,
+ &15,-211,-213,-20213,-431,-433,3*3122,1,4,3,4,1,3,11,13,15,1,4,3,
+ &4,1,3,11,13,15,1,4,3,4,1,3,2*111,2*211,11,13,15,1,4,3,4,1,3,11,
+ &13,15,1,4,3,4,1,3,4*22,11,13,15,1,4,3,4,1,3,22,11,13,15,1,4,3,4,
+ &1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,
+ &3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,3/
+ DATA (KFDP(I,2),I=1353,1815)/11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,
+ &4,1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,
+ &1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,
+ &3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,3,11,13,15,1,4,3,4,1,3,
+ &2*111,2*211,-211,111,-321,130,310,-211,111,211,-211,111,-213,113,
+ &-211,111,223,211,111,213,113,211,111,223,-211,111,-321,130,310,
+ &2*-211,-311,311,-321,321,211,111,211,111,-211,111,-211,111,311,
+ &2*321,311,22,2*-82,-211,111,-211,111,211,111,211,111,-321,-311,
+ &-321,-311,411,421,411,421,22,2*21,-211,2*211,111,-211,111,2*211,
+ &111,-211,211,111,211,-321,2*-311,-321,22,-211,111,211,111,-311,
+ &311,-321,321,211,111,-211,111,321,311,22,-82,-211,111,211,111,
+ &-321,-311,411,421,22,21,-11,-13,-82,211,111,221,111,4*22,-11,-13,
+ &-15,-1,-2,-3,-4,2*21,211,111,3*22,1,2*2,4*1,2*-24,2*-37,2*1,3,5,
+ &1,3,5,1,3,5,1,2,3,4,5,6,1,2,3,4,5,6,1,2,3,4,5,6,-3,-5,-3,-5,-3,
+ &-5,2,2*1,4*2,2*24,2*37,2,1,3,5,1,3,5,1,3,5,-3,2*-5,3,2*4,4*3,
+ &2*-24,2*-37,3,1,3,5,1,3,5,1,3,5,1,2,3,4,5,6,1,2,3,4,5,6,1,2,3,4,
+ &5,6,-1,-5,-1,-5,-1,-5,4,2*3,4*4,2*24,2*37,4,1,3,5,1,3,5,1,3,5,-3,
+ &2*-5,5,2*6,4*5,2*-24,2*-37,5,1,3,5,1,3,5,1,3,5,1,2,3,4,5,6,1,2,3,
+ &4,5,6,1,2,3,4,5,6,-1,-3,-1,-3,-1,-3,6,2*5,4*6,2*24,2*37,6,4,-15,
+ &16,1,3,5,1,3,5,1,3,5,-3,2*-5,11,2*12,4*11,2*-24,-37,13,15,11,15/
+ DATA (KFDP(I,2),I=1816,2317)/11,13,11,13,15,11,13,15,1,3,5,1,3,5,
+ &1,3,5,12,2*11,4*12,2*24,2*37,11,13,15,11,13,15,1,3,5,1,3,5,1,3,5,
+ &13,2*14,4*13,2*-24,2*-37,13,15,11,15,11,13,11,13,15,11,13,15,1,3,
+ &5,1,3,5,1,3,5,14,2*13,4*14,2*24,2*37,11,13,15,11,13,15,1,3,5,1,3,
+ &5,1,3,5,15,2*16,4*15,2*-24,2*-37,13,15,11,15,11,13,11,13,15,11,
+ &13,15,1,3,5,1,3,5,1,3,5,16,2*15,4*16,2*24,2*37,11,13,15,11,13,15,
+ &1,3,5,1,3,5,1,3,5,21,-1,1,-1,1,-2,2,-2,2,-3,3,-3,3,-4,4,-4,4,-5,
+ &5,-5,5,-6,6,-6,6,1,3,5,2,4,6,1,3,5,2,4,6,1,3,5,2,4,6,1,3,5,2,4,6,
+ &1,-1,3,-3,5,-5,1,-1,3,-3,5,-5,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,
+ &-4,4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-2,2,
+ &-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,
+ &-6,6,-5,5,-6,6,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,
+ &-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-1,1,-3,3,-1,1,-1,1,
+ &-3,3,-1,1,-1,1,-3,3,22,23,25,35,36,-1,-3,-13,13,-13,13,-13,13,
+ &-15,15,-15,15,-15,15,-11,11,-11,11,-11,11,-15,15,-15,15,-15,15,
+ &-11,11,-11,11,-11,11,-13,13,-13,13,-13,13,-1,1,-2,2,-1,1,-2,2,-1,
+ &1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,
+ &6,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,
+ &5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,
+ &4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-1,1,-3/
+ DATA (KFDP(I,2),I=2318,2770)/3,-1,1,-1,1,-3,3,-1,1,-1,1,-3,3,22,
+ &23,25,35,36,22,23,11,13,15,12,14,16,1,3,5,2,4,25,35,36,-24,24,11,
+ &-11,13,-13,15,-15,1,-1,3,-3,-24,24,11,-11,13,-13,15,-15,1,-1,3,
+ &-3,-37,37,-37,37,-1,1,-1,1,-2,2,-2,2,-3,3,-3,3,-4,4,-4,4,-5,5,-5,
+ &5,-6,6,-6,6,-11,11,-11,11,-12,12,-12,12,-13,13,-13,13,-14,14,-14,
+ &14,-15,15,-15,15,-16,16,-16,16,1,3,5,2,4,-13,13,-13,13,-13,13,
+ &-15,15,-15,15,-15,15,-11,11,-11,11,-11,11,-15,15,-15,15,-15,15,
+ &-11,11,-11,11,-11,11,-13,13,-13,13,-13,13,-1,1,-2,2,-1,1,-2,2,-1,
+ &1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,
+ &6,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,
+ &5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,
+ &4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-1,1,-3,
+ &3,-1,1,-1,1,-3,3,-1,1,-1,1,-3,3,24,37,24,-11,-13,-15,-1,-3,24,
+ &-11,-13,-15,-1,-3,24,-11,-13,-15,-1,-3,24,-11,-13,-15,-1,-3,4*37,
+ &2*-1,2*2,2*-3,2*4,2*-5,2*6,2*-11,2*12,2*-13,2*14,2*-15,2*16,-1,
+ &-3,-13,14,2*-13,14,2*-13,14,-13,-15,16,2*-15,16,2*-15,16,-15,
+ &6*-11,-15,16,2*-15,16,2*-15,16,-15,6*-11,6*-13,-1,-2,-1,2,-1,-2,
+ &-1,2,-1,-2,-1,2,-3,-4,-3,4,-3,-4,-3,4,-3,-4,-3,4,-5,-6,-5,6,-5,
+ &-6,-5,6,-5,-6,-5,6,-1,-2,-1,2,-1,-2,-1,2,-1,-2,-1,2,-3,-4,-3,4,
+ &-3,-4,-3,4,-3,-4,-3,4,-5,-6,-5,6,-5,-6,-5,6,-5,-6,-5,6,-1,-2,-1/
+ DATA (KFDP(I,2),I=2771,3221)/2,-1,-2,-1,2,-1,-2,-1,2,-3,-4,-3,4,
+ &-3,-4,-3,4,-3,-4,-3,4,-5,-6,-5,6,-5,-6,-5,6,-5,-6,-5,6,2,-1,2,-1,
+ &2*4,-3,4,-3,3*6,-5,2*4,-3,3*6,-5,2*6,22,23,25,35,36,22,23,11,13,
+ &15,12,14,16,1,3,5,2,4,25,35,36,22,23,11,13,15,12,14,16,1,3,5,2,4,
+ &25,35,36,-24,24,11,-11,13,-13,15,-15,1,-1,3,-3,-24,24,11,-11,13,
+ &-13,15,-15,1,-1,3,-3,-37,37,-37,37,-1,1,-1,1,-2,2,-2,2,-3,3,-3,3,
+ &-4,4,-4,4,-5,5,-5,5,-6,6,-6,6,-11,11,-11,11,-12,12,-12,12,-13,13,
+ &-13,13,-14,14,-14,14,-15,15,-15,15,-16,16,-16,16,1,3,5,2,4,-13,
+ &13,-13,13,-13,13,-15,15,-15,15,-15,15,-11,11,-11,11,-11,11,-15,
+ &15,-15,15,-15,15,-11,11,-11,11,-11,11,-13,13,-13,13,-13,13,-1,1,
+ &-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,
+ &-5,5,-6,6,-5,5,-6,6,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,3,
+ &-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-2,2,-1,1,-2,2,
+ &-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,
+ &-6,6,-1,1,-1,1,-3,3,-1,1,-1,1,-3,3,-1,1,-1,1,-3,3,22,23,25,35,36,
+ &22,23,11,13,15,12,14,16,1,3,5,2,4,25,35,36,22,23,11,13,15,12,14,
+ &16,1,3,5,2,4,25,35,36,22,23,11,13,15,12,14,16,1,3,5,2,4,25,35,36,
+ &-24,24,11,-11,13,-13,15,-15,1,-1,3,-3,-24,24,11,-11,13,-13,15,
+ &-15,1,-1,3,-3,-37,37,-37,37,-1,1,-1,1,-2,2,-2,2,-3,3,-3,3,-4,4,
+ &-4,4,-5,5,-5,5,-6,6,-6,6,-11,11,-11,11,-12,12,-12,12,-13,13,-13/
+ DATA (KFDP(I,2),I=3222,3669)/13,-14,14,-14,14,-15,15,-15,15,-16,
+ &16,-16,16,1,3,5,2,4,-13,13,-13,13,-13,13,-15,15,-15,15,-15,15,
+ &-11,11,-11,11,-11,11,-15,15,-15,15,-15,15,-11,11,-11,11,-11,11,
+ &-13,13,-13,13,-13,13,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,
+ &3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-2,2,-1,1,-2,
+ &2,-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,4,-5,5,-6,6,-5,5,-6,6,-5,
+ &5,-6,6,-1,1,-2,2,-1,1,-2,2,-1,1,-2,2,-3,3,-4,4,-3,3,-4,4,-3,3,-4,
+ &4,-5,5,-6,6,-5,5,-6,6,-5,5,-6,6,-1,1,-1,1,-3,3,-1,1,-1,1,-3,3,-1,
+ &1,-1,1,-3,3,24,37,23,11,13,15,12,14,16,1,3,5,2,4,25,35,36,24,-11,
+ &-13,-15,-1,-3,24,-11,-13,-15,-1,-3,24,-11,-13,-15,-1,-3,24,-11,
+ &-13,-15,-1,-3,4*37,2*-1,2*2,2*-3,2*4,2*-5,2*6,2*-11,2*12,2*-13,
+ &2*14,2*-15,2*16,-1,-3,-13,14,2*-13,14,2*-13,14,-13,-15,16,2*-15,
+ &16,2*-15,16,-15,-11,12,2*-11,12,2*-11,12,-11,-15,16,2*-15,16,
+ &2*-15,16,-15,-11,12,2*-11,12,2*-11,12,-11,-13,14,2*-13,14,2*-13,
+ &14,-13,-1,-2,-1,2,-1,-2,-1,2,-1,-2,-1,2,-3,-4,-3,4,-3,-4,-3,4,-3,
+ &-4,-3,4,-5,-6,-5,6,-5,-6,-5,6,-5,-6,-5,6,-1,-2,-1,2,-1,-2,-1,2,
+ &-1,-2,-1,2,-3,-4,-3,4,-3,-4,-3,4,-3,-4,-3,4,-5,-6,-5,6,-5,-6,-5,
+ &6,-5,-6,-5,6,-1,-2,-1,2,-1,-2,-1,2,-1,-2,-1,2,-3,-4,-3,4,-3,-4,
+ &-3,4,-3,-4,-3,4,-5,-6,-5,6,-5,-6,-5,6,-5,-6,-5,6,2,-1,2,-1,2*4,
+ &-3,4,-3,3*6,-5,2*4,-3,3*6,-5,2*6,1,2*2,4*1,23,25,35,36,2*-24/
+ DATA (KFDP(I,2),I=3670,4183)/2*-37,2*1,3,5,1,3,5,1,3,5,1,2,3,4,5,
+ &6,1,2,3,4,5,6,1,2,3,4,5,6,-3,-5,-3,-5,-3,-5,2,2*1,4*2,23,25,35,
+ &36,2*24,2*37,2,1,3,5,1,3,5,1,3,5,-3,2*-5,3,2*4,4*3,23,25,35,36,
+ &2*-24,2*-37,3,1,3,5,1,3,5,1,3,5,1,2,3,4,5,6,1,2,3,4,5,6,1,2,3,4,
+ &5,6,-1,-5,-1,-5,-1,-5,4,2*3,4*4,23,25,35,36,2*24,2*37,4,1,3,5,1,
+ &3,5,1,3,5,-3,2*-5,5,2*6,4*5,23,25,35,36,2*-24,2*-37,5,1,3,5,1,3,
+ &5,1,3,5,1,2,3,4,5,6,1,2,3,4,5,6,1,2,3,4,5,6,-1,-3,-1,-3,-1,-3,6,
+ &2*5,4*6,23,25,35,36,2*24,2*37,6,1,3,5,1,3,5,1,3,5,-3,2*-5,11,
+ &2*12,4*11,23,25,35,36,2*-24,2*-37,13,15,11,15,11,13,11,13,15,11,
+ &13,15,1,3,5,1,3,5,1,3,5,13,2*14,4*13,23,25,35,36,2*-24,2*-37,13,
+ &15,11,15,11,13,11,13,15,11,13,15,1,3,5,1,3,5,1,3,5,15,2*16,4*15,
+ &23,25,35,36,2*-24,2*-37,13,15,11,15,11,13,11,13,15,11,13,15,1,3,
+ &5,1,3,5,1,3,5,-3,-4,-5,-6,-11,-13,-15,21,-1,-3,2*-5,5,12,14,16,
+ &-3,-4,-5,-6,-11,-13,-15,21,-5,-6,21,-1,-2,-3,-4,-5,-6,-1,-2,-3,
+ &-4,-5,-6,21,-1,-2,-3,-4,-5,-6,21,-1,-2,-3,-4,-5,-6,21,-1,-2,-3,
+ &-4,-5,-6,-1,-2,-3,-4,-5,-6,-1,-2,-3,-4,-5,-6,3*21,3*1,4*2,1,2*11,
+ &2*12,11,-1,-2,-3,-4,-5,-6,-7,-8,-11,-12,-13,-14,-15,-16,-17,-18,
+ &21,22,23,-24,3*-1,3*-3,3*-5,3*1,3*3,3*5,2*-13,2*15,3*-1,3*-3,
+ &3*-5,3*1,3*3,3*5,2*-11,2*15,3*-1,3*-3,3*-5,3*1,3*3,3*5,2*-11,
+ &2*13,-1,-2,-3,-4,-5,-6,-11,-12,9900012,-13,-14,9900014,-15,-16/
+ DATA (KFDP(I,2),I=4184,8000)/9900016,2,4,6,2,4,6,2,4,6,9900012,
+ &9900014,9900016,-11,-13,-15,-13,2*-15,24,-11,-13,-15,-13,2*-15,
+ &9900024,6*21,-24,-3000211,-24,-3000211,3000111,3000221,3000111,
+ &3000221,2*23,-1,-2,-3,-4,-5,-6,-7,-8,-11,-12,-13,-14,-15,-16,-17,
+ &-18,23,3000111,23,3000111,22,3000221,22,2,4,6,8,2,4,6,8,2,4,6,8,
+ &2,4,6,8,12,14,16,18,2*3000111,2*3000221,-3000211,2*-24,-3000211,
+ &2*23,-1,-2,-3,-4,-5,-6,-7,-8,-11,-12,-13,-14,-15,-16,-17,-18,-24,
+ &-3000211,3000211,3000221,3000113,3000223,-3000213,3000213,
+ &3000113,3000223,-1,-2,-3,-4,-5,-6,-7,-8,-11,-12,-13,-14,-15,-16,
+ &-17,-18,24,3000211,24,3000111,3000221,3000211,3000213,3000113,
+ &3000223,3000213,2,4,6,8,2,4,6,8,2,4,6,8,2,4,6,8,12,14,16,18,
+ &3649*0/
+ DATA (KFDP(I,3),I= 1,1021)/81*0,14,6*0,2*16,2*0,6*111,310,130,
+ &2*0,3*111,310,130,321,113,211,223,221,2*113,2*211,2*223,2*221,
+ &2*113,221,2*113,2*213,-213,113,2*111,310,130,310,130,2*310,130,
+ &402*0,4*3,4*4,1,4,3,2*2,0,-11,8*0,-211,5*0,2*111,211,-211,211,
+ &-211,10*0,111,4*0,2*111,-211,-11,11,-13,22,111,3*0,22,3*0,111,
+ &211,4*0,111,11*0,111,-211,6*0,-211,3*111,7*0,111,-211,5*0,2*221,
+ &3*0,111,5*0,111,11*0,-311,-313,-311,-321,-313,-323,111,221,331,
+ &113,223,-311,-313,-311,-321,-313,-323,111,221,331,113,223,22*0,
+ &111,113,2*211,-211,-311,211,111,3*211,-211,7*211,7*0,111,-211,
+ &111,-211,-321,-323,-311,-321,-313,-323,-211,-213,-321,-323,-311,
+ &-321,-313,-323,-211,-213,22*0,111,113,-311,2*-211,211,-211,310,
+ &-211,2*111,211,2*-211,-321,-211,2*211,-211,111,-211,2*211,6*0,
+ &111,-211,111,-211,0,221,331,333,321,311,221,331,333,321,311,20*0,
+ &3,13*0,-411,-413,-10413,-10411,-20413,-415,-411,-413,-10413,
+ &-10411,-20413,-415,-411,-413,16*0,-4,-1,-4,-3,2*-2,5*0,111,-211,
+ &111,-211,-421,-423,-10423,-10421,-20423,-425,-421,-423,-10423,
+ &-10421,-20423,-425,-421,-423,16*0,-4,-1,-4,-3,2*-2,5*0,111,-211,
+ &111,-211,-431,-433,-10433,-10431,-20433,-435,-431,-433,-10433,
+ &-10431,-20433,-435,-431,-433,19*0,-4,-1,-4,-3,2*-2,8*0,441,443,
+ &441,443,441,443,-4,-1,-4,-3,-4,-3,-4,-1,531,533,531,533,3,2,3,2/
+ DATA (KFDP(I,3),I=1022,2223)/511,513,511,513,1,2,13*0,2*21,11*0,
+ &2112,6*0,2212,12*0,2*3122,3212,10*0,3322,2*0,3122,3212,3214,2112,
+ &2114,2212,2112,3122,3212,3214,2112,2114,2212,2112,52*0,3*3,1,6*0,
+ &4*3,4*0,4*3,6*0,4*3,0,28*3,2*0,3*4122,8*0,4,1,4,3,2*2,4*4,1,4,3,
+ &2*2,4*4,1,4,3,2*2,4*0,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*0,4*4,1,4,3,
+ &2*2,0,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,
+ &4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,
+ &3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,
+ &4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,3,2*2,4*4,1,4,
+ &3,2*2,31*0,211,111,45*0,-211,2*111,-211,3*111,-211,111,211,30*0,
+ &-211,111,13*0,2*21,-211,111,199*0,2*5,210*0,-1,-3,-5,-2,-4,-6,-1,
+ &-3,-5,-2,-4,-6,-1,-3,-5,-2,-4,-6,-1,-3,-5,-2,-4,-6,-2,2,-4,4,-6,
+ &6,-2,2,-4,4,-6,6,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,
+ &-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,
+ &-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,
+ &-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,
+ &-1,1,-1,3,-3,3,-3,5,-5,5,-5,-3,3,-5,5,-5,5,-3,3,-5,5,-5,5,-3,3,
+ &-5,5,-5,5,5*0,11,12,11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,11,
+ &-11,13,-13,15,-15,11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,11,
+ &-11,13,-13,15,-15,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3/
+ DATA (KFDP(I,3),I=2224,2783)/-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,
+ &-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,
+ &-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,
+ &-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,-3,3,
+ &-5,5,-5,5,-3,3,-5,5,-5,5,-3,3,-5,5,-5,5,7*0,-11,-13,-15,-12,-14,
+ &-16,-1,-3,-5,-2,-4,5*0,-12,12,-14,14,-16,16,-2,2,-4,4,2*0,-12,12,
+ &-14,14,-16,16,-2,2,-4,4,52*0,-1,-3,-5,-2,-4,11,-11,13,-13,15,-15,
+ &11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,
+ &11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,1,-1,1,-1,3,-3,3,-3,5,
+ &-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,
+ &-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,
+ &-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,
+ &-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,-3,3,-5,5,
+ &-5,5,-3,3,-5,5,-5,5,-3,3,-5,5,-5,5,3*0,12,14,16,2,4,0,12,14,16,2,
+ &4,0,12,14,16,2,4,0,12,14,16,2,4,28*0,2,4,12,-11,11,14,-13,13,16,
+ &-15,15,12,-11,11,14,-13,13,16,-15,15,12,11,14,13,16,15,12,-11,11,
+ &14,-13,13,16,-15,15,12,11,14,13,16,15,12,11,14,13,16,15,2*2,1,-1,
+ &2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,
+ &2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,
+ &2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1/
+ DATA (KFDP(I,3),I=2784,3354)/2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,
+ &2*6,5,-5,3,-3,5,-5,1,3,-3,5,-5,1,3,5,-5,1,5,-5,1,3,5,-5,1,3,7*0,
+ &-11,-13,-15,-12,-14,-16,-1,-3,-5,-2,-4,5*0,-11,-13,-15,-12,-14,
+ &-16,-1,-3,-5,-2,-4,5*0,-12,12,-14,14,-16,16,-2,2,-4,4,2*0,-12,12,
+ &-14,14,-16,16,-2,2,-4,4,52*0,-1,-3,-5,-2,-4,11,-11,13,-13,15,-15,
+ &11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,
+ &11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,1,-1,1,-1,3,-3,3,-3,5,
+ &-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,
+ &-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,
+ &-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,
+ &-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,-3,3,-5,5,
+ &-5,5,-3,3,-5,5,-5,5,-3,3,-5,5,-5,5,7*0,-11,-13,-15,-12,-14,-16,
+ &-1,-3,-5,-2,-4,5*0,-11,-13,-15,-12,-14,-16,-1,-3,-5,-2,-4,5*0,
+ &-11,-13,-15,-12,-14,-16,-1,-3,-5,-2,-4,5*0,-12,12,-14,14,-16,16,
+ &-2,2,-4,4,2*0,-12,12,-14,14,-16,16,-2,2,-4,4,52*0,-1,-3,-5,-2,-4,
+ &11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,
+ &11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,11,-11,13,-13,15,-15,1,
+ &-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,
+ &-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,
+ &-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,1,-1,1,-1,3,-3,3/
+ DATA (KFDP(I,3),I=3355,8000)/-3,5,-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,
+ &-5,5,-5,1,-1,1,-1,3,-3,3,-3,5,-5,5,-5,-3,3,-5,5,-5,5,-3,3,-5,5,
+ &-5,5,-3,3,-5,5,-5,5,3*0,-11,-13,-15,-12,-14,-16,-1,-3,-5,-2,-4,
+ &4*0,12,14,16,2,4,0,12,14,16,2,4,0,12,14,16,2,4,0,12,14,16,2,4,
+ &28*0,2,4,12,-11,11,14,-13,13,16,-15,15,12,-11,11,14,-13,13,16,
+ &-15,15,12,-11,11,14,-13,13,16,-15,15,12,-11,11,14,-13,13,16,-15,
+ &15,12,-11,11,14,-13,13,16,-15,15,12,-11,11,14,-13,13,16,-15,15,
+ &2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,
+ &2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,
+ &2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,
+ &2*2,1,-1,2*4,3,-3,2*6,5,-5,2*2,1,-1,2*4,3,-3,2*6,5,-5,3,-3,5,-5,
+ &1,3,-3,5,-5,1,3,5,-5,1,5,-5,1,3,5,-5,1,3,351*0,-5,95*0,2,4,6,2,4,
+ &6,2,4,6,-2,-4,-6,-2,-4,-6,-2,-4,-6,2*9900014,2*9900016,2,4,6,2,4,
+ &6,2,4,6,-2,-4,-6,-2,-4,-6,-2,-4,-6,2*9900012,2*9900016,2,4,6,2,4,
+ &6,2,4,6,-2,-4,-6,-2,-4,-6,-2,-4,-6,2*9900012,2*9900014,3831*0/
+ DATA (KFDP(I,4),I= 1,8000)/94*0,4*111,6*0,111,2*0,-211,0,-211,
+ &3*0,111,2*-211,0,111,0,2*111,113,221,2*111,-213,-211,211,113,
+ &6*111,310,2*130,402*0,13*81,41*0,-11,10*0,111,-211,4*0,111,62*0,
+ &111,211,111,211,7*0,111,211,111,211,35*0,2*-211,2*111,211,111,
+ &-211,2*211,2*-211,13*0,-211,111,-211,111,4*0,-211,111,-211,111,
+ &34*0,111,-211,3*111,3*-211,2*111,3*-211,14*0,-321,-311,3*0,-321,
+ &-311,20*0,-3,43*0,6*1,39*0,6*2,42*0,6*3,14*0,8*4,4*0,4*-5,4*0,
+ &2*-5,67*0,-211,111,5*0,-211,111,52*0,2101,2103,2*2101,6*0,4*81,
+ &4*0,4*81,6*0,4*81,0,28*81,13*0,6*2101,18*81,4*0,18*81,4*0,9*81,0,
+ &162*81,31*0,-211,111,6516*0/
+ DATA (KFDP(I,5),I= 1,8000)/96*0,2*111,17*0,111,7*0,2*111,0,
+ &3*111,0,111,597*0,-211,2*111,-211,111,-211,111,65*0,111,-211,
+ &3*111,-211,111,7193*0/
+
+C...PYDAT4, with particle names (character strings).
+ DATA (CHAF(I,1),I= 1, 202)/'d','u','s','c','b','t','b''','t''',
+ &2*' ','e-','nu_e','mu-','nu_mu','tau-','nu_tau','tau''-',
+ &'nu''_tau',2*' ','g','gamma','Z0','W+','h0',6*' ','Z''0','Z"0',
+ &'W''+','H0','A0','H+',' ','Graviton',' ','R0','LQ_ue',38*' ',
+ &'specflav','rndmflav','phasespa','c-hadron','b-hadron',2*' ',
+ &'junction',' ','system','cluster','string','indep.','CMshower',
+ &'SPHEaxis','THRUaxis','CLUSjet','CELLjet','table',' ','reggeon',
+ &'pi0','rho0','a_20','K_L0','pi+','rho+','a_2+','eta','omega',
+ &'f_2','K_S0','K0','K*0','K*_20','K+','K*+','K*_2+','eta''','phi',
+ &'f''_2','D+','D*+','D*_2+','D0','D*0','D*_20','D_s+','D*_s+',
+ &'D*_2s+','eta_c','J/psi','chi_2c','B0','B*0','B*_20','B+','B*+',
+ &'B*_2+','B_s0','B*_s0','B*_2s0','B_c+','B*_c+','B*_2c+','eta_b',
+ &'Upsilon','chi_2b','pomeron','dd_1','Delta-','ud_0','ud_1','n0',
+ &'Delta0','uu_1','p+','Delta+','Delta++','sd_0','sd_1','Sigma-',
+ &'Sigma*-','Lambda0','su_0','su_1','Sigma0','Sigma*0','Sigma+',
+ &'Sigma*+','ss_1','Xi-','Xi*-','Xi0','Xi*0','Omega-','cd_0',
+ &'cd_1','Sigma_c0','Sigma*_c0','Lambda_c+','Xi_c0','cu_0','cu_1',
+ &'Sigma_c+','Sigma*_c+','Sigma_c++','Sigma*_c++','Xi_c+','cs_0',
+ &'cs_1','Xi''_c0','Xi*_c0','Xi''_c+','Xi*_c+','Omega_c0',
+ &'Omega*_c0','cc_1','Xi_cc+','Xi*_cc+','Xi_cc++','Xi*_cc++'/
+ DATA (CHAF(I,1),I= 203, 332)/'Omega_cc+','Omega*_cc+',
+ &'Omega*_ccc++','bd_0','bd_1','Sigma_b-','Sigma*_b-','Lambda_b0',
+ &'Xi_b-','Xi_bc0','bu_0','bu_1','Sigma_b0','Sigma*_b0','Sigma_b+',
+ &'Sigma*_b+','Xi_b0','Xi_bc+','bs_0','bs_1','Xi''_b-','Xi*_b-',
+ &'Xi''_b0','Xi*_b0','Omega_b-','Omega*_b-','Omega_bc0','bc_0',
+ &'bc_1','Xi''_bc0','Xi*_bc0','Xi''_bc+','Xi*_bc+','Omega''_bc0',
+ &'Omega*_bc0','Omega_bcc+','Omega*_bcc+','bb_1','Xi_bb-',
+ &'Xi*_bb-','Xi_bb0','Xi*_bb0','Omega_bb-','Omega*_bb-',
+ &'Omega_bbc0','Omega*_bbc0','Omega*_bbb-','a_00','b_10','a_0+',
+ &'b_1+','f_0','h_1','K*_00','K_10','K*_0+','K_1+','f''_0','h''_1',
+ &'D*_0+','D_1+','D*_00','D_10','D*_0s+','D_1s+','chi_0c','h_1c',
+ &'B*_00','B_10','B*_0+','B_1+','B*_0s0','B_1s0','B*_0c+','B_1c+',
+ &'chi_0b','h_1b','a_10','a_1+','f_1','K*_10','K*_1+','f''_1',
+ &'D*_1+','D*_10','D*_1s+','chi_1c','B*_10','B*_1+','B*_1s0',
+ &'B*_1c+','chi_1b','psi''','Upsilon''','~d_L','~u_L','~s_L',
+ &'~c_L','~b_1','~t_1','~e_L-','~nu_eL','~mu_L-','~nu_muL',
+ &'~tau_1-','~nu_tauL','~g','~chi_10','~chi_20','~chi_1+',
+ &'~chi_30','~chi_40','~chi_2+','~Gravitino','~d_R','~u_R','~s_R',
+ &'~c_R','~b_2','~t_2','~e_R-','~nu_eR','~mu_R-','~nu_muR',
+ &'~tau_2-','~nu_tauR','pi_tc0','pi_tc+','pi''_tc0','eta_tc0'/
+ DATA (CHAF(I,1),I= 333, 500)/'rho_tc0','rho_tc+','omega_tc',
+ &'V8_tc','pi_22_1_tc','pi_22_8_tc','rho_11_tc','rho_12_tc',
+ &'rho_21_tc','rho_22_tc','d*','u*','e*-','nu*_e0','Graviton*',
+ &'nu_Re','nu_Rmu','nu_Rtau','Z_R0','W_R+','H_L++','H_R++',
+ &'rho_diff0','pi_diffr+','omega_di','phi_diff','J/psi_di',
+ &'n_diffr0','p_diffr+','cc~[3S18]','cc~[1S08]','cc~[3P08]',
+ &'bb~[3S18]','bb~[1S08]','bb~[3P08]','a_tc0','a_tc+',131*' '/
+ DATA (CHAF(I,2),I= 1, 205)/'dbar','ubar','sbar','cbar','bbar',
+ &'tbar','b''bar','t''bar',2*' ','e+','nu_ebar','mu+','nu_mubar',
+ &'tau+','nu_taubar','tau''+','nu''_taubar',5*' ','W-',9*' ',
+ &'W''-',2*' ','H-',3*' ','Rbar0','LQ_uebar',39*' ','rndmflavbar',
+ &' ','c-hadronbar','b-hadronbar',20*' ','pi-','rho-','a_2-',4*' ',
+ &'Kbar0','K*bar0','K*_2bar0','K-','K*-','K*_2-',3*' ','D-','D*-',
+ &'D*_2-','Dbar0','D*bar0','D*_2bar0','D_s-','D*_s-','D*_2s-',
+ &3*' ','Bbar0','B*bar0','B*_2bar0','B-','B*-','B*_2-','B_sbar0',
+ &'B*_sbar0','B*_2sbar0','B_c-','B*_c-','B*_2c-',4*' ','dd_1bar',
+ &'Deltabar+','ud_0bar','ud_1bar','nbar0','Deltabar0','uu_1bar',
+ &'pbar-','Deltabar-','Deltabar--','sd_0bar','sd_1bar','Sigmabar+',
+ &'Sigma*bar+','Lambdabar0','su_0bar','su_1bar','Sigmabar0',
+ &'Sigma*bar0','Sigmabar-','Sigma*bar-','ss_1bar','Xibar+',
+ &'Xi*bar+','Xibar0','Xi*bar0','Omegabar+','cd_0bar','cd_1bar',
+ &'Sigma_cbar0','Sigma*_cbar0','Lambda_cbar-','Xi_cbar0','cu_0bar',
+ &'cu_1bar','Sigma_cbar-','Sigma*_cbar-','Sigma_cbar--',
+ &'Sigma*_cbar--','Xi_cbar-','cs_0bar','cs_1bar','Xi''_cbar0',
+ &'Xi*_cbar0','Xi''_cbar-','Xi*_cbar-','Omega_cbar0',
+ &'Omega*_cbar0','cc_1bar','Xi_ccbar-','Xi*_ccbar-','Xi_ccbar--',
+ &'Xi*_ccbar--','Omega_ccbar-','Omega*_ccbar-','Omega*_cccbar-'/
+ DATA (CHAF(I,2),I= 206, 325)/'bd_0bar','bd_1bar','Sigma_bbar+',
+ &'Sigma*_bbar+','Lambda_bbar0','Xi_bbar+','Xi_bcbar0','bu_0bar',
+ &'bu_1bar','Sigma_bbar0','Sigma*_bbar0','Sigma_bbar-',
+ &'Sigma*_bbar-','Xi_bbar0','Xi_bcbar-','bs_0bar','bs_1bar',
+ &'Xi''_bbar+','Xi*_bbar+','Xi''_bbar0','Xi*_bbar0','Omega_bbar+',
+ &'Omega*_bbar+','Omega_bcbar0','bc_0bar','bc_1bar','Xi''_bcbar0',
+ &'Xi*_bcbar0','Xi''_bcbar-','Xi*_bcbar-','Omega''_bcba',
+ &'Omega*_bcbar0','Omega_bccbar-','Omega*_bccbar-','bb_1bar',
+ &'Xi_bbbar+','Xi*_bbbar+','Xi_bbbar0','Xi*_bbbar0','Omega_bbbar+',
+ &'Omega*_bbbar+','Omega_bbcbar0','Omega*_bbcbar0',
+ &'Omega*_bbbbar+',2*' ','a_0-','b_1-',2*' ','K*_0bar0','K_1bar0',
+ &'K*_0-','K_1-',2*' ','D*_0-','D_1-','D*_0bar0','D_1bar0',
+ &'D*_0s-','D_1s-',2*' ','B*_0bar0','B_1bar0','B*_0-','B_1-',
+ &'B*_0sbar0','B_1sbar0','B*_0c-','B_1c-',3*' ','a_1-',' ',
+ &'K*_1bar0','K*_1-',' ','D*_1-','D*_1bar0','D*_1s-',' ',
+ &'B*_1bar0','B*_1-','B*_1sbar0','B*_1c-',3*' ','~d_Lbar',
+ &'~u_Lbar','~s_Lbar','~c_Lbar','~b_1bar','~t_1bar','~e_L+',
+ &'~nu_eLbar','~mu_L+','~nu_muLbar','~tau_1+','~nu_tauLbar',3*' ',
+ &'~chi_1-',2*' ','~chi_2-',' ','~d_Rbar','~u_Rbar','~s_Rbar',
+ &'~c_Rbar','~b_2bar','~t_2bar','~e_R+','~nu_eRbar','~mu_R+'/
+ DATA (CHAF(I,2),I= 326, 500)/'~nu_muRbar','~tau_2+',
+ &'~nu_tauRbar',' ','pi_tc-',3*' ','rho_tc-',8*' ','d*bar','u*bar',
+ &'e*bar+','nu*_ebar0',5*' ','W_R-','H_L--','H_R--',' ',
+ &'pi_diffr-',3*' ','n_diffrbar0','p_diffrbar-',7*' ','a_tc-',
+ &131*' '/
+
+C...PYDATR, with initial values for the random number generator.
+ DATA MRPY/19780503,0,0,97,33,0/
+
+C...Default values for allowed processes and kinematics constraints.
+ DATA MSEL/1/
+ DATA MSUB/500*0/
+ DATA ((KFIN(I,J),J=-40,40),I=1,2)/16*0,4*1,4*0,6*1,5*0,5*1,0,
+ &5*1,5*0,6*1,4*0,4*1,16*0,16*0,4*1,4*0,6*1,5*0,5*1,0,5*1,5*0,
+ &6*1,4*0,4*1,16*0/
+ DATA CKIN/
+ & 2.0D0, -1.0D0, 0.0D0, -1.0D0, 1.0D0,
+ & 1.0D0, -10D0, 10D0, -40D0, 40D0,
+ 1 -40D0, 40D0, -40D0, 40D0, -40D0,
+ 1 40D0, -1.0D0, 1.0D0, -1.0D0, 1.0D0,
+ 2 0.0D0, 1.0D0, 0.0D0, 1.0D0, -1.0D0,
+ 2 1.0D0, -1.0D0, 1.0D0, 0D0, 0D0,
+ 3 2.0D0, -1.0D0, 0D0, 0D0, 0.0D0,
+ 3 -1.0D0, 0.0D0, -1.0D0, 4.0D0, -1.0D0,
+ 4 12.0D0, -1.0D0, 12.0D0, -1.0D0, 12.0D0,
+ 4 -1.0D0, 12.0D0, -1.0D0, 0D0, 0D0,
+ 5 0.0D0, -1.0D0, 0.0D0, -1.0D0, 0.0D0,
+ 5 -1.0D0, 0D0, 0D0, 0D0, 0D0,
+ 6 0.0001D0, 0.99D0, 0.0001D0, 0.99D0, 0D0,
+ 6 -1D0, 0D0, -1D0, 0D0, -1D0,
+ 7 0D0, -1D0, 0.0001D0, 0.99D0, 0.0001D0,
+ 7 0.99D0, 2D0, -1D0, 0D0, 0D0,
+ 8 120*0D0/
+
+C...Default values for main switches and parameters. Reset information.
+ DATA (MSTP(I),I=1,100)/
+ & 3, 1, 2, 0, 0, 0, 0, 0, 0, 0,
+ 1 1, 0, 1, 30, 0, 1, 4, 3, 4, 3,
+ 2 1, 0, 1, 0, 0, 0, 0, 0, 0, 1,
+ 3 1, 8, 0, 1, 0, 2, 1, 5, 2, 0,
+ 4 2, 1, 3, 7, 3, 1, 1, 0, 1, 0,
+ 5 7, 1, 3, 1, 5, 1, 1, 5, 1, 7,
+ 6 2, 3, 2, 2, 1, 5, 2, 3, 0, 0,
+ 7 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+ 8 1, 4, 100, 1, 1, 2, 4, 1, 1, 0,
+ 9 1, 3, 1, 3, 1, 0, 0, 0, 0, 0/
+ DATA (MSTP(I),I=101,200)/
+ & 3, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
+ 2 0, 1, 2, 1, 1, 100, 0, 0, 10, 0,
+ 3 0, 4, 0, 1, 0, 0, 0, 0, 0, 0,
+ 4 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
+ 5 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 6 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 7 0, 2, 0, 0, 0, 0, 0, 0, 0, 0,
+ 8 6, 414, 2007, 11, 19, 0, 0, 0, 0, 0,
+ 9 0, 0, 0, 0, 0, 0, 0, 0, 0, 0/
+ DATA (PARP(I),I=1,100)/
+ & 0.25D0, 10D0, 8*0D0,
+ 1 0D0, 0D0, 1.0D0, 0.01D0, 0.5D0, 1.0D0, 1.0D0, 0.4D0, 2*0D0,
+ 2 10*0D0,
+ 3 1.5D0,2.0D0,0.075D0,1.0D0,0.2D0,0D0,1.0D0,0.70D0,0.006D0,0D0,
+ 4 0.02D0,2.0D0,0.10D0,1000D0,2054D0,123D0,246D0,50D0,0D0,0.054D0,
+ 5 10*0D0,
+ 6 0.25D0, 1.0D0,0.25D0, 1.0D0, 2.0D0,1D-3, 4.0D0,1D-3,2*0D0,
+ 7 4.0D0, 0.25D0, 5*0D0, 0.025D0, 2.0D0, 0.1D0,
+ 8 1.90D0, 2.0D0, 0.5D0, 0.4D0, 0.90D0,
+ 8 0.95D0, 0.7D0, 0.5D0, 1800D0, 0.16D0,
+ 9 2.0D0,0.40D0,5.0D0,1.0D0,0.0D0,3.0D0,1.0D0,0.75D0,1.0D0,5.0D0/
+ DATA (PARP(I),I=101,200)/
+ & 0.5D0, 0.28D0, 1.0D0, 0.8D0, 0D0, 0D0, 0D0, 0D0, 0D0, 1D0,
+ 1 2.0D0, 3*0D0, 1.5D0, 0.5D0, 0.6D0, 2.5D0, 2.0D0, 1.0D0,
+ 2 1.0D0, 0.4D0, 8*0D0,
+ 3 0.01D0, 9*0D0,
+ 4 1.16D0, 0.0119D0, 0.01D0, 0.01D0, 0.05D0,
+ 4 9.28D0, 0.15D0, 0.02D0, 0.48D0, 0.09D0,
+ 5 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0, 0D0,
+ 6 2.20D0, 23.6D0, 18.4D0, 11.5D0, 0.5D0, 0D0, 0D0, 0D0, 2*0D0,
+ 7 0D0, 0D0, 0D0, 1.0D0, 6*0D0,
+ 8 0.1D0, 0.01D0, 0.01D0, 0.01D0, 0.1D0, 0.01D0, 0.01D0, 0.01D0,
+ 8 0.3D0, 0.64D0,
+ 9 0.64D0, 5.0D0, 1.0D4, 1.0D4, 6*0D0/
+ DATA MSTI/200*0/
+ DATA PARI/200*0D0/
+ DATA MINT/400*0/
+ DATA VINT/400*0D0/
+
+C...Constants for the generation of the various processes.
+ DATA (ISET(I),I=1,100)/
+ & 1, 1, 1, -1, 3, -1, -1, 3, -2, 2,
+ 1 2, 2, 2, 2, 2, 2, -1, 2, 2, 2,
+ 2 -1, 2, 2, 2, 2, 2, -1, 2, 2, 2,
+ 3 2, 2, 2, 2, 2, 2, -1, -1, -1, -1,
+ 4 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 5 -1, -1, 2, 2, -1, -1, -1, 2, -1, -1,
+ 6 -1, -1, -1, -1, -1, -1, -1, 2, 2, 2,
+ 7 4, 4, 4, -1, -1, 4, 4, -1, -1, 2,
+ 8 2, 2, 2, 2, 2, 2, 2, 2, 2, -2,
+ 9 0, 0, 0, 0, 0, 9, -2, -2, 8, -2/
+ DATA (ISET(I),I=101,200)/
+ & -1, 1, 1, 1, 1, 2, 2, 2, -2, 2,
+ 1 2, 2, 2, 2, 2, -1, -1, -1, -2, -2,
+ 2 5, 5, 5, 5, -2, -2, -2, -2, -2, -2,
+ 3 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 4 1, 1, 1, 1, 1, 1, 1, 1, 1, -2,
+ 5 1, 1, 1, -2, -2, 1, 1, 1, -2, -2,
+ 6 2, 2, 2, 2, 2, 2, 2, 2, 2, -2,
+ 7 2, 2, 5, 5, -2, 2, 2, 5, 5, -2,
+ 8 5, 5, 2, 2, 2, 5, 5, 2, 2, 2,
+ 9 1, 1, 1, 2, 2, -2, -2, -2, -2, -2/
+ DATA (ISET(I),I=201,300)/
+ & 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 1 2, 2, 2, 2, -2, 2, 2, 2, 2, 2,
+ 2 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 3 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 4 2, 2, 2, 2, -1, 2, 2, 2, 2, 2,
+ 5 2, 2, 2, 2, -1, 2, -1, 2, 2, -2,
+ 6 2, 2, 2, 2, 2, -1, -1, -1, -1, -1,
+ 7 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 8 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 9 2, 2, 2, 2, 2, 2, 2, 2, 2, 2/
+ DATA (ISET(I),I=301,500)/
+ & 2, 39*-2,
+ 4 1, 1, 2, 2, 2, 2, 2, 2, 2, 2,
+ 5 5, 5, 1, 1, -1, -1, -1, -1, -1, -1,
+ 6 2, 2, 2, 2, 2, 2, 2, 2, -1, 2,
+ 7 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 8 2, 2, 2, 2, 2, 2, 2, 2, -2, -2,
+ 9 1, 1, 2, 2, 2, 5*-2,
+ & 5, 5, 18*-2,
+ 2 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 3 2, 2, 2, 2, 2, 2, 2, 2, 2, 21*-2,
+ 6 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 7 2, 2, 2, 2, 2, 2, 2, 2, 2, 21*-2/
+ DATA ((KFPR(I,J),J=1,2),I=1,50)/
+ & 23, 0, 24, 0, 25, 0, 24, 0, 25, 0,
+ & 24, 0, 23, 0, 25, 0, 0, 0, 0, 0,
+ 1 0, 0, 0, 0, 21, 21, 21, 22, 21, 23,
+ 1 21, 24, 21, 25, 22, 22, 22, 23, 22, 24,
+ 2 22, 25, 23, 23, 23, 24, 23, 25, 24, 24,
+ 2 24, 25, 25, 25, 0, 21, 0, 22, 0, 23,
+ 3 0, 24, 0, 25, 0, 21, 0, 22, 0, 23,
+ 3 0, 24, 0, 25, 0, 21, 0, 22, 0, 23,
+ 4 0, 24, 0, 25, 0, 21, 0, 22, 0, 23,
+ 4 0, 24, 0, 25, 0, 21, 0, 22, 0, 23/
+ DATA ((KFPR(I,J),J=1,2),I=51,100)/
+ 5 0, 24, 0, 25, 0, 0, 0, 0, 0, 0,
+ 5 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 6 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 6 0, 0, 0, 0, 21, 21, 24, 24, 23, 24,
+ 7 23, 23, 24, 24, 23, 24, 23, 25, 22, 22,
+ 7 23, 23, 24, 24, 24, 25, 25, 25, 0, 211,
+ 8 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 8 443, 21,10441, 21,20443, 21, 445, 21, 0, 0,
+ 9 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 9 0, 0, 0, 0, 0, 0, 0, 0, 0, 0/
+ DATA ((KFPR(I,J),J=1,2),I=101,150)/
+ & 23, 0, 25, 0, 25, 0,10441, 0, 445, 0,
+ & 443, 22, 443, 21, 443, 22, 0, 0, 22, 25,
+ 1 21, 25, 0, 25, 21, 25, 22, 22, 21, 22,
+ 1 22, 23, 23, 23, 24, 24, 0, 0, 0, 0,
+ 2 25, 6, 25, 6, 25, 0, 25, 0, 0, 0,
+ 2 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 3 0, 21, 0, 21, 0, 22, 0, 22, 0, 0,
+ 3 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 4 32, 0, 34, 0, 37, 0, 41, 0, 42, 0,
+ 4 4000011, 0, 4000001, 0, 4000002, 0, 3000331, 0, 0, 0/
+ DATA ((KFPR(I,J),J=1,2),I=151,200)/
+ 5 35, 0, 35, 0, 35, 0, 0, 0, 0, 0,
+ 5 36, 0, 36, 0, 36, 0, 0, 0, 0, 0,
+ 6 6, 37, 42, 0, 42, 42, 42, 42, 11, 0,
+ 6 11, 0, 0, 4000001, 0, 4000002, 0, 4000011, 0, 0,
+ 7 23, 35, 24, 35, 35, 0, 35, 0, 0, 0,
+ 7 23, 36, 24, 36, 36, 0, 36, 0, 0, 0,
+ 8 35, 6, 35, 6, 21, 35, 0, 35, 21, 35,
+ 8 36, 6, 36, 6, 21, 36, 0, 36, 21, 36,
+ 9 3000113, 0, 3000213, 0, 3000223, 0, 11, 0, 11, 0,
+ 9 0, 0, 0, 0, 0, 0, 0, 0, 0, 0/
+ DATA ((KFPR(I,J),J=1,2),I=201,240)/
+ & 1000011, 1000011, 2000011, 2000011, 1000011,
+ & 2000011, 1000013, 1000013, 2000013, 2000013,
+ & 1000013, 2000013, 1000015, 1000015, 2000015,
+ & 2000015, 1000015, 2000015, 1000011, 1000012,
+ 1 1000015, 1000016, 2000015, 1000016, 1000012,
+ 1 1000012, 1000016, 1000016, 0, 0,
+ 1 1000022, 1000022, 1000023, 1000023, 1000025,
+ 1 1000025, 1000035, 1000035, 1000022, 1000023,
+ 2 1000022, 1000025, 1000022, 1000035, 1000023,
+ 2 1000025, 1000023, 1000035, 1000025, 1000035,
+ 2 1000024, 1000024, 1000037, 1000037, 1000024,
+ 2 1000037, 1000022, 1000024, 1000023, 1000024,
+ 3 1000025, 1000024, 1000035, 1000024, 1000022,
+ 3 1000037, 1000023, 1000037, 1000025, 1000037,
+ 3 1000035, 1000037, 1000021, 1000022, 1000021,
+ 3 1000023, 1000021, 1000025, 1000021, 1000035/
+ DATA ((KFPR(I,J),J=1,2),I=241,280)/
+ 4 1000021, 1000024, 1000021, 1000037, 1000021,
+ 4 1000021, 1000021, 1000021, 0, 0,
+ 4 1000002, 1000022, 2000002, 1000022, 1000002,
+ 4 1000023, 2000002, 1000023, 1000002, 1000025,
+ 5 2000002, 1000025, 1000002, 1000035, 2000002,
+ 5 1000035, 1000001, 1000024, 2000005, 1000024,
+ 5 1000001, 1000037, 2000005, 1000037, 1000002,
+ 5 1000021, 2000002, 1000021, 0, 0,
+ 6 1000006, 1000006, 2000006, 2000006, 1000006,
+ 6 2000006, 1000006, 1000006, 2000006, 2000006,
+ 6 0, 0, 0, 0, 0,
+ 6 0, 0, 0, 0, 0,
+ 7 1000002, 1000002, 2000002, 2000002, 1000002,
+ 7 2000002, 1000002, 1000002, 2000002, 2000002,
+ 7 1000002, 2000002, 1000002, 1000002, 2000002,
+ 7 2000002, 1000002, 1000002, 2000002, 2000002/
+ DATA ((KFPR(I,J),J=1,2),I=281,350)/
+ 8 1000005, 1000002, 2000005, 2000002, 1000005,
+ 8 2000002, 1000005, 1000002, 2000005, 2000002,
+ 8 1000005, 2000002, 1000005, 1000005, 2000005,
+ 8 2000005, 1000005, 1000005, 2000005, 2000005,
+ 9 1000005, 1000005, 2000005, 2000005, 1000005,
+ 9 2000005, 1000005, 1000021, 2000005, 1000021,
+ 9 1000005, 2000005, 37, 25, 37,
+ 9 35, 36, 25, 36, 35,
+ & 37, 37, 78*0,
+ 4 9900041, 0, 9900042, 0, 9900041,
+ 4 11, 9900042, 11, 9900041, 13,
+ 4 9900042, 13, 9900041, 15, 9900042,
+ 4 15, 9900041, 9900041, 9900042, 9900042/
+ DATA ((KFPR(I,J),J=1,2),I=351,400)/
+ 5 9900041, 0, 9900042, 0, 9900023,
+ 5 0, 9900024, 0, 0, 0,
+ 5 0, 0, 0, 0, 0,
+ 5 0, 0, 0, 0, 0,
+ 6 24, 24, 24, 3000211, 3000211,
+ 6 3000211, 22, 3000111, 22, 3000221,
+ 6 23, 3000111, 23, 3000221, 24,
+ 6 3000211, 0, 0, 24, 23,
+ 7 24, 3000111, 3000211, 23, 3000211,
+ 7 3000111, 22, 3000211, 23, 3000211,
+ 7 24, 3000111, 24, 3000221, 22,
+ 7 24, 22, 23, 23, 23,
+ 8 0, 0, 0, 0, 21, 21, 0, 21, 0, 0,
+ 8 21, 21, 0, 0, 0, 0, 0, 0, 0, 0,
+ 9 5000039, 0, 5000039, 0, 21,
+ 9 5000039, 0, 5000039, 21, 5000039,
+ 9 10*0/
+ DATA ((KFPR(I,J),J=1,2),I=401,500)/
+ & 37, 6, 37, 6, 36*0,
+ 2 443, 21, 9900443, 21, 9900441,
+ 2 21, 9910441, 21, 0, 9900443,
+ 2 0, 9900441, 0, 9910441, 21,
+ 2 9900443, 21, 9900441, 21, 9910441,
+ 3 10441, 21, 20443, 21, 445, 21, 0, 10441, 0, 20443,
+ 3 0, 445, 21, 10441, 21, 20443, 21, 445, 42*0,
+ 6 553, 21, 9900553, 21, 9900551,
+ 6 21, 9910551, 21, 0, 9900553,
+ 6 0, 9900551, 0, 9910551, 21,
+ 6 9900553, 21, 9900551, 21, 9910551,
+ 7 10551, 21, 20553, 21, 555, 21, 0, 10551, 0, 20553,
+ 7 0, 555, 21, 10551, 21, 20553, 21, 555, 42*0/
+ DATA COEF/10000*0D0/
+ DATA (((ICOL(I,J,K),K=1,2),J=1,4),I=1,40)/
+ &4,0,3,0,2,0,1,0,3,0,4,0,1,0,2,0,2,0,0,1,4,0,0,3,3,0,0,4,1,0,0,2,
+ &3,0,0,4,1,4,3,2,4,0,0,3,4,2,1,3,2,0,4,1,4,0,2,3,4,0,3,4,2,0,1,2,
+ &3,2,1,0,1,4,3,0,4,3,3,0,2,1,1,0,3,2,1,4,1,0,0,2,2,4,3,1,2,0,0,1,
+ &3,2,1,4,1,4,3,2,4,2,1,3,4,2,1,3,3,4,4,3,1,2,2,1,2,0,3,1,2,0,0,0,
+ &4,2,1,0,0,0,1,0,3,0,0,3,1,2,0,0,4,0,0,4,0,0,1,2,2,0,0,1,4,4,3,3,
+ &2,2,1,1,4,4,3,3,3,3,4,4,1,1,2,2,3,2,1,3,1,2,0,0,4,2,1,4,0,0,1,2,
+ &4,0,0,0,4,0,1,3,0,0,3,0,2,4,3,0,3,4,0,0,1,0,0,1,0,0,3,4,2,0,0,2,
+ &3,0,0,0,1,0,0,0,0,0,3,0,2,0,0,0,2,0,3,1,2,0,0,0,3,2,1,0,1,0,0,0,
+ &4,4,3,3,2,2,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ &0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0/
+
+C...Treatment of resonances.
+ DATA (MWID(I) ,I= 1, 500)/5*0,3*1,8*0,1,5*0,3*1,6*0,1,0,4*1,
+ &3*0,2*1,254*0,19*2,0,7*2,0,2,0,2,0,26*1,7*0,6*2,2*1,131*0/
+
+C...Character constants: name of processes.
+ DATA PROC(0)/ 'All included subprocesses '/
+ DATA (PROC(I),I=1,20)/
+ &'f + fbar -> gamma*/Z0 ', 'f + fbar'' -> W+/- ',
+ &'f + fbar -> h0 ', 'gamma + W+/- -> W+/- ',
+ &'Z0 + Z0 -> h0 ', 'Z0 + W+/- -> W+/- ',
+ &' ', 'W+ + W- -> h0 ',
+ &' ', 'f + f'' -> f + f'' (QFD) ',
+ 1'f + f'' -> f + f'' (QCD) ','f + fbar -> f'' + fbar'' ',
+ 1'f + fbar -> g + g ', 'f + fbar -> g + gamma ',
+ 1'f + fbar -> g + Z0 ', 'f + fbar'' -> g + W+/- ',
+ 1'f + fbar -> g + h0 ', 'f + fbar -> gamma + gamma ',
+ 1'f + fbar -> gamma + Z0 ', 'f + fbar'' -> gamma + W+/- '/
+ DATA (PROC(I),I=21,40)/
+ 2'f + fbar -> gamma + h0 ', 'f + fbar -> Z0 + Z0 ',
+ 2'f + fbar'' -> Z0 + W+/- ', 'f + fbar -> Z0 + h0 ',
+ 2'f + fbar -> W+ + W- ', 'f + fbar'' -> W+/- + h0 ',
+ 2'f + fbar -> h0 + h0 ', 'f + g -> f + g ',
+ 2'f + g -> f + gamma ', 'f + g -> f + Z0 ',
+ 3'f + g -> f'' + W+/- ', 'f + g -> f + h0 ',
+ 3'f + gamma -> f + g ', 'f + gamma -> f + gamma ',
+ 3'f + gamma -> f + Z0 ', 'f + gamma -> f'' + W+/- ',
+ 3'f + gamma -> f + h0 ', 'f + Z0 -> f + g ',
+ 3'f + Z0 -> f + gamma ', 'f + Z0 -> f + Z0 '/
+ DATA (PROC(I),I=41,60)/
+ 4'f + Z0 -> f'' + W+/- ', 'f + Z0 -> f + h0 ',
+ 4'f + W+/- -> f'' + g ', 'f + W+/- -> f'' + gamma ',
+ 4'f + W+/- -> f'' + Z0 ', 'f + W+/- -> f'' + W+/- ',
+ 4'f + W+/- -> f'' + h0 ', 'f + h0 -> f + g ',
+ 4'f + h0 -> f + gamma ', 'f + h0 -> f + Z0 ',
+ 5'f + h0 -> f'' + W+/- ', 'f + h0 -> f + h0 ',
+ 5'g + g -> f + fbar ', 'g + gamma -> f + fbar ',
+ 5'g + Z0 -> f + fbar ', 'g + W+/- -> f + fbar'' ',
+ 5'g + h0 -> f + fbar ', 'gamma + gamma -> f + fbar ',
+ 5'gamma + Z0 -> f + fbar ', 'gamma + W+/- -> f + fbar'' '/
+ DATA (PROC(I),I=61,80)/
+ 6'gamma + h0 -> f + fbar ', 'Z0 + Z0 -> f + fbar ',
+ 6'Z0 + W+/- -> f + fbar'' ', 'Z0 + h0 -> f + fbar ',
+ 6'W+ + W- -> f + fbar ', 'W+/- + h0 -> f + fbar'' ',
+ 6'h0 + h0 -> f + fbar ', 'g + g -> g + g ',
+ 6'gamma + gamma -> W+ + W- ', 'gamma + W+/- -> Z0 + W+/- ',
+ 7'Z0 + Z0 -> Z0 + Z0 ', 'Z0 + Z0 -> W+ + W- ',
+ 7'Z0 + W+/- -> Z0 + W+/- ', 'Z0 + Z0 -> Z0 + h0 ',
+ 7'W+ + W- -> gamma + gamma ', 'W+ + W- -> Z0 + Z0 ',
+ 7'W+/- + W+/- -> W+/- + W+/- ', 'W+/- + h0 -> W+/- + h0 ',
+ 7'h0 + h0 -> h0 + h0 ', 'q + gamma -> q'' + pi+/- '/
+ DATA (PROC(I),I=81,100)/
+ 8'q + qbar -> Q + Qbar, mass ', 'g + g -> Q + Qbar, massive ',
+ 8'f + q -> f'' + Q, massive ', 'g + gamma -> Q + Qbar, mass ',
+ 8'gamma + gamma -> F + Fbar, m', 'g + g -> J/Psi + g ',
+ 8'g + g -> chi_0c + g ', 'g + g -> chi_1c + g ',
+ 8'g + g -> chi_2c + g ', ' ',
+ 9'Elastic scattering ', 'Single diffractive (XB) ',
+ 9'Single diffractive (AX) ', 'Double diffractive ',
+ 9'Low-pT scattering ', 'Semihard QCD 2 -> 2 ',
+ 9' ', ' ',
+ 9'q + gamma* -> q ', ' '/
+ DATA (PROC(I),I=101,120)/
+ &'g + g -> gamma*/Z0 ', 'g + g -> h0 ',
+ &'gamma + gamma -> h0 ', 'g + g -> chi_0c ',
+ &'g + g -> chi_2c ', 'g + g -> J/Psi + gamma ',
+ &'gamma + g -> J/Psi + g ', 'gamma+gamma -> J/Psi + gamma',
+ &' ', 'f + fbar -> gamma + h0 ',
+ 1'q + qbar -> g + h0 ', 'q + g -> q + h0 ',
+ 1'g + g -> g + h0 ', 'g + g -> gamma + gamma ',
+ 1'g + g -> g + gamma ', 'g + g -> gamma + Z0 ',
+ 1'g + g -> Z0 + Z0 ', 'g + g -> W+ + W- ',
+ 1' ', ' '/
+ DATA (PROC(I),I=121,140)/
+ 2'g + g -> Q + Qbar + h0 ', 'q + qbar -> Q + Qbar + h0 ',
+ 2'f + f'' -> f + f'' + h0 ',
+ 2'f + f'' -> f" + f"'' + h0 ',
+ 2' ', ' ',
+ 2' ', ' ',
+ 2' ', ' ',
+ 3'f + gamma*_T -> f + g ', 'f + gamma*_L -> f + g ',
+ 3'f + gamma*_T -> f + gamma ', 'f + gamma*_L -> f + gamma ',
+ 3'g + gamma*_T -> f + fbar ', 'g + gamma*_L -> f + fbar ',
+ 3'gamma*_T+gamma*_T -> f+fbar ', 'gamma*_T+gamma*_L -> f+fbar ',
+ 3'gamma*_L+gamma*_T -> f+fbar ', 'gamma*_L+gamma*_L -> f+fbar '/
+ DATA (PROC(I),I=141,160)/
+ 4'f + fbar -> gamma*/Z0/Z''0 ', 'f + fbar'' -> W''+/- ',
+ 4'f + fbar'' -> H+/- ', 'f + fbar'' -> R ',
+ 4'q + l -> LQ ', 'e + gamma -> e* ',
+ 4'd + g -> d* ', 'u + g -> u* ',
+ 4'g + g -> eta_tc ', ' ',
+ 5'f + fbar -> H0 ', 'g + g -> H0 ',
+ 5'gamma + gamma -> H0 ', ' ',
+ 5' ', 'f + fbar -> A0 ',
+ 5'g + g -> A0 ', 'gamma + gamma -> A0 ',
+ 5' ', ' '/
+ DATA (PROC(I),I=161,180)/
+ 6'f + g -> f'' + H+/- ', 'q + g -> LQ + lbar ',
+ 6'g + g -> LQ + LQbar ', 'q + qbar -> LQ + LQbar ',
+ 6'f + fbar -> f'' + fbar'' (g/Z)',
+ 6'f +fbar'' -> f" + fbar"'' (W) ',
+ 6'q + q'' -> q" + d* ', 'q + q'' -> q" + u* ',
+ 6'q + qbar -> e + e* ', ' ',
+ 7'f + fbar -> Z0 + H0 ', 'f + fbar'' -> W+/- + H0 ',
+ 7'f + f'' -> f + f'' + H0 ',
+ 7'f + f'' -> f" + f"'' + H0 ',
+ 7' ', 'f + fbar -> Z0 + A0 ',
+ 7'f + fbar'' -> W+/- + A0 ',
+ 7'f + f'' -> f + f'' + A0 ',
+ 7'f + f'' -> f" + f"'' + A0 ',
+ 7' '/
+ DATA (PROC(I),I=181,200)/
+ 8'g + g -> Q + Qbar + H0 ', 'q + qbar -> Q + Qbar + H0 ',
+ 8'q + qbar -> g + H0 ', 'q + g -> q + H0 ',
+ 8'g + g -> g + H0 ', 'g + g -> Q + Qbar + A0 ',
+ 8'q + qbar -> Q + Qbar + A0 ', 'q + qbar -> g + A0 ',
+ 8'q + g -> q + A0 ', 'g + g -> g + A0 ',
+ 9'f + fbar -> rho_tc0 ', 'f + f'' -> rho_tc+/- ',
+ 9'f + fbar -> omega_tc0 ', 'f+fbar -> f''+fbar'' (ETC) ',
+ 9'f+fbar'' -> f"+fbar"'' (ETC)',' ',
+ 9' ', ' ',
+ 9' ', ' '/
+ DATA (PROC(I),I=201,220)/
+ &'f + fbar -> ~e_L + ~e_Lbar ', 'f + fbar -> ~e_R + ~e_Rbar ',
+ &'f + fbar -> ~e_R + ~e_Lbar ', 'f + fbar -> ~mu_L + ~mu_Lbar',
+ &'f + fbar -> ~mu_R + ~mu_Rbar', 'f + fbar -> ~mu_L + ~mu_Rbar',
+ &'f+fbar -> ~tau_1 + ~tau_1bar', 'f+fbar -> ~tau_2 + ~tau_2bar',
+ &'f+fbar -> ~tau_1 + ~tau_2bar', 'q + qbar'' -> ~l_L + ~nulbar ',
+ 1'q+qbar''-> ~tau_1 + ~nutaubar', 'q+qbar''-> ~tau_2 + ~nutaubar',
+ 1'f + fbar -> ~nul + ~nulbar ', 'f+fbar -> ~nutau + ~nutaubar',
+ 1' ', 'f + fbar -> ~chi1 + ~chi1 ',
+ 1'f + fbar -> ~chi2 + ~chi2 ', 'f + fbar -> ~chi3 + ~chi3 ',
+ 1'f + fbar -> ~chi4 + ~chi4 ', 'f + fbar -> ~chi1 + ~chi2 '/
+ DATA (PROC(I),I=221,240)/
+ 2'f + fbar -> ~chi1 + ~chi3 ', 'f + fbar -> ~chi1 + ~chi4 ',
+ 2'f + fbar -> ~chi2 + ~chi3 ', 'f + fbar -> ~chi2 + ~chi4 ',
+ 2'f + fbar -> ~chi3 + ~chi4 ', 'f+fbar -> ~chi+-1 + ~chi-+1 ',
+ 2'f+fbar -> ~chi+-2 + ~chi-+2 ', 'f+fbar -> ~chi+-1 + ~chi-+2 ',
+ 2'q + qbar'' -> ~chi1 + ~chi+-1', 'q + qbar'' -> ~chi2 + ~chi+-1',
+ 3'q + qbar'' -> ~chi3 + ~chi+-1', 'q + qbar'' -> ~chi4 + ~chi+-1',
+ 3'q + qbar'' -> ~chi1 + ~chi+-2', 'q + qbar'' -> ~chi2 + ~chi+-2',
+ 3'q + qbar'' -> ~chi3 + ~chi+-2', 'q + qbar'' -> ~chi4 + ~chi+-2',
+ 3'q + qbar -> ~chi1 + ~g ', 'q + qbar -> ~chi2 + ~g ',
+ 3'q + qbar -> ~chi3 + ~g ', 'q + qbar -> ~chi4 + ~g '/
+ DATA (PROC(I),I=241,260)/
+ 4'q + qbar'' -> ~chi+-1 + ~g ', 'q + qbar'' -> ~chi+-2 + ~g ',
+ 4'q + qbar -> ~g + ~g ', 'g + g -> ~g + ~g ',
+ 4' ', 'qj + g -> ~qj_L + ~chi1 ',
+ 4'qj + g -> ~qj_R + ~chi1 ', 'qj + g -> ~qj_L + ~chi2 ',
+ 4'qj + g -> ~qj_R + ~chi2 ', 'qj + g -> ~qj_L + ~chi3 ',
+ 5'qj + g -> ~qj_R + ~chi3 ', 'qj + g -> ~qj_L + ~chi4 ',
+ 5'qj + g -> ~qj_R + ~chi4 ', 'qj + g -> ~qk_L + ~chi+-1 ',
+ 5'qj + g -> ~qk_R + ~chi+-1 ', 'qj + g -> ~qk_L + ~chi+-2 ',
+ 5'qj + g -> ~qk_R + ~chi+-2 ', 'qj + g -> ~qj_L + ~g ',
+ 5'qj + g -> ~qj_R + ~g ', ' '/
+ DATA (PROC(I),I=261,300)/
+ 6'f + fbar -> ~t_1 + ~t_1bar ', 'f + fbar -> ~t_2 + ~t_2bar ',
+ 6'f + fbar -> ~t_1 + ~t_2bar ', 'g + g -> ~t_1 + ~t_1bar ',
+ 6'g + g -> ~t_2 + ~t_2bar ', ' ',
+ 6' ', ' ',
+ 6' ', ' ',
+ 7'qi + qj -> ~qi_L + ~qj_L ', 'qi + qj -> ~qi_R + ~qj_R ',
+ 7'qi + qj -> ~qi_L + ~qj_R ', 'qi+qjbar -> ~qi_L + ~qj_Lbar',
+ 7'qi+qjbar -> ~qi_R + ~qj_Rbar', 'qi+qjbar -> ~qi_L + ~qj_Rbar',
+ 7'f + fbar -> ~qi_L + ~qi_Lbar', 'f + fbar -> ~qi_R + ~qi_Rbar',
+ 7'g + g -> ~qi_L + ~qi_Lbar ', 'g + g -> ~qi_R + ~qi_Rbar ',
+ 8'b + qj -> ~b_1 + ~qj_L ', 'b + qj -> ~b_2 + ~qj_R ',
+ 8'b + qj -> ~b_1 + ~qj_R ', 'b + qjbar -> ~b_1 + ~qj_Lbar',
+ 8'b + qjbar -> ~b_2 + ~qj_Rbar', 'b + qjbar -> ~b_1 + ~qj_Rbar',
+ 8'f + fbar -> ~b_1 + ~b_1bar ', 'f + fbar -> ~b_2 + ~b_2bar ',
+ 8'g + g -> ~b_1 + ~b_1bar ', 'g + g -> ~b_2 + ~b_2bar ',
+ 9'b + b -> ~b_1 + ~b_1 ', 'b + b -> ~b_2 + ~b_2 ',
+ 9'b + b -> ~b_1 + ~b_2 ', 'b + g -> ~b_1 + ~g ',
+ 9'b + g -> ~b_2 + ~g ', 'b + bbar -> ~b_1 + ~b_2bar ',
+ 9'f + fbar'' -> H+/- + h0 ', 'f + fbar -> H+/- + H0 ',
+ 9'f + fbar -> A0 + h0 ', 'f + fbar -> A0 + H0 '/
+ DATA (PROC(I),I=301,340)/
+ &'f + fbar -> H+ + H- ', 39*' '/
+ DATA (PROC(I),I=341,380)/
+ 4'l + l -> H_L++/-- ', 'l + l -> H_R++/-- ',
+ 4'l + gamma -> H_L++/-- e-/+ ', 'l + gamma -> H_R++/-- e-/+ ',
+ 4'l + gamma -> H_L++/-- mu-/+ ', 'l + gamma -> H_R++/-- mu-/+ ',
+ 4'l + gamma -> H_L++/-- tau-/+', 'l + gamma -> H_R++/-- tau-/+',
+ 4'f + fbar -> H_L++ + H_L-- ', 'f + fbar -> H_R++ + H_R-- ',
+ 5'f + f -> f'' + f'' + H_L++/-- ',
+ 5'f + f -> f'' + f'' + H_R++/-- ','f + fbar -> Z_R0 ',
+ 5'f + fbar'' -> W_R+/- ',5*' ',
+ 6' ', 'f + fbar -> W_L+ W_L- ',
+ 6'f + fbar -> W_L+/- pi_T-/+ ', 'f + fbar -> pi_T+ pi_T- ',
+ 6'f + fbar -> gamma pi_T0 ', 'f + fbar -> gamma pi_T0'' ',
+ 6'f + fbar -> Z0 pi_T0 ', 'f + fbar -> Z0 pi_T0'' ',
+ 6'f + fbar -> W+/- pi_T-/+ ', ' ',
+ 7'f + fbar'' -> W_L+/- Z_L0 ', 'f + fbar'' -> W_L+/- pi_T0 ',
+ 7'f + fbar'' -> pi_T+/- Z_L0 ', 'f + fbar'' -> pi_T+/- pi_T0 ',
+ 7'f + fbar'' -> gamma pi_T+/- ', 'f + fbar'' -> Z0 pi_T+/- ',
+ 7'f + fbar'' -> W+/- pi_T0 ',
+ 7'f + fbar'' -> W+/- pi_T0'' ',
+ 7'f + fbar'' -> gamma W+/- (ETC)','f + fbar -> gamma Z0 (ETC)',
+ 7'f + fbar -> Z0 Z0 (ETC)'/
+ DATA (PROC(I),I=381,420)/
+ 8'f + f'' -> f + f'' (ETC) ','f + fbar -> f'' + fbar'' (ETC)',
+ 8'f + fbar -> g + g (ETC) ', 'f + g -> f + g (ETC) ',
+ 8'g + g -> f + fbar (ETC) ', 'g + g -> g + g (ETC) ',
+ 8'q + qbar -> Q + Qbar (ETC) ', 'g + g -> Q + Qbar (ETC) ',
+ 8' ', ' ',
+ 9'f + fbar -> G* ', 'g + g -> G* ',
+ 9'q + qbar -> g + G* ', 'q + g -> q + G* ',
+ 9'g + g -> g + G* ', ' ',
+ 9 4*' ',
+ &'g + g -> t + b + H+/- ', 'q + qbar -> t + b + H+/- ',
+ & 18*' '/
+ DATA (PROC(I),I=421,460)/
+ 2'g + g -> cc~[3S1(1)] + g ', 'g + g -> cc~[3S1(8)] + g ',
+ 2'g + g -> cc~[1S0(8)] + g ', 'g + g -> cc~[3PJ(8)] + g ',
+ 2'g + q -> q + cc~[3S1(8)] ', 'g + q -> q + cc~[1S0(8)] ',
+ 2'g + q -> q + cc~[3PJ(8)] ', 'q + q~ -> g + cc~[3S1(8)] ',
+ 2'q + q~ -> g + cc~[1S0(8)] ', 'q + q~ -> g + cc~[3PJ(8)] ',
+ 3'g + g -> cc~[3P0(1)] + g ', 'g + g -> cc~[3P1(1)] + g ',
+ 3'g + g -> cc~[3P2(1)] + g ', 'q + g -> q + cc~[3P0(1)] ',
+ 3'q + g -> q + cc~[3P1(1)] ', 'q + g -> q + cc~[3P2(1)] ',
+ 3'q + q~ -> g + cc~[3P0(1)] ', 'q + q~ -> g + cc~[3P1(1)] ',
+ 3'q + q~ -> g + cc~[3P2(1)] ',
+ 3 21 *' '/
+ DATA (PROC(I),I=461,500)/
+ 6'g + g -> bb~[3S1(1)] + g ', 'g + g -> bb~[3S1(8)] + g ',
+ 6'g + g -> bb~[1S0(8)] + g ', 'g + g -> bb~[3PJ(8)] + g ',
+ 6'g + q -> q + bb~[3S1(8)] ', 'g + q -> q + bb~[1S0(8)] ',
+ 6'g + q -> q + bb~[3PJ(8)] ', 'q + q~ -> g + bb~[3S1(8)] ',
+ 6'q + q~ -> g + bb~[1S0(8)] ', 'q + q~ -> g + bb~[3PJ(8)] ',
+ 7'g + g -> bb~[3P0(1)] + g ', 'g + g -> bb~[3P1(1)] + g ',
+ 7'g + g -> bb~[3P2(1)] + g ', 'q + g -> q + bb~[3P0(1)] ',
+ 7'q + g -> q + bb~[3P1(1)] ', 'q + g -> q + bb~[3P2(1)] ',
+ 7'q + q~ -> g + bb~[3P0(1)] ', 'q + q~ -> g + bb~[3P1(1)] ',
+ 7'q + q~ -> g + bb~[3P2(1)] ',
+ 7 21 *' '/
+
+C...Cross sections and slope offsets.
+ DATA SIGT/294*0D0/
+
+C...Supersymmetry switches and parameters.
+ DATA IMSS/0,
+ & 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+ 1 89*0/
+ DATA RMSS/0D0,
+ & 80D0,160D0,500D0,800D0,2D0,250D0,200D0,800D0,700D0,800D0,
+ 1 700D0,500D0,250D0,200D0,800D0,400D0,0D0,0.1D0,850D0,0.041D0,
+ 2 1D0,800D0,1D4,1D4,1D4,0D0,0D0,0D0,24D17,0D0,
+ 3 10*0D0,
+ 4 0D0,1D0,8*0D0,
+ 5 49*0D0/
+C...Initial values for R-violating SUSY couplings.
+C...Should not be changed here. See PYMSIN.
+ DATA RVLAM/27*0D0/
+ DATA RVLAMP/27*0D0/
+ DATA RVLAMB/27*0D0/
+
+C...Technicolor switches and parameters
+ DATA ITCM/0,
+ & 4, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1 89*0/
+ DATA RTCM/0D0,
+ & 82D0,1.333D0,.333D0,0.408D0,1D0,1D0,.0182D0,1D0,0D0,1.333D0,
+ 1 .05D0,200D0,200D0,0D0,0D0,0D0,0D0,0D0,0D0,0D0,
+ 2 .283D0,.707D0,0D0,0D0,0D0,1.667D0,250D0,250D0,.707D0,0D0,
+ 3 .707D0,0D0,1D0,0D0,0D0,0D0,0D0,0D0,0D0,0D0,
+ 4 1000D0, 1D0, 1D0, 1D0, 1D0, 0D0, 1D0, 3*200D0,
+ 4 200D0, 48*0D0/
+
+C...Data for histogramming routines.
+ DATA IHIST/1000,20000,55,1/
+ DATA INDX/1000*0/
+
+C...Data for SUSY Les Houches Accord.
+ DATA CPRO/'PYTHIA ','PYTHIA '/
+ DATA CVER/'6.4 ','6.4 '/
+ DATA MODSEL/200*0/
+ DATA PARMIN/100*0D0/
+ DATA RMSOFT/101*0D0/
+ DATA AU/9*0D0/
+ DATA AD/9*0D0/
+ DATA AE/9*0D0/
+
+ END
+
+C*********************************************************************
+
+C...PYCKBD
+C...Check that BLOCK DATA PYDATA has been loaded.
+C...Should not be required, except that some compilers/linkers
+C...are pretty buggy in this respect.
+
+ SUBROUTINE PYCKBD
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/
+
+C...Check a few variables to see they have been sensibly initialized.
+ IF(MSTU(4).LT.10.OR.MSTU(4).GT.900000.OR.PMAS(2,1).LT.0.001D0
+ &.OR.PMAS(2,1).GT.1D0.OR.CKIN(5).LT.0.01D0.OR.MSTP(1).LT.1.OR.
+ &MSTP(1).GT.5) THEN
+C...If not, abort the run right away.
+ WRITE(*,*) 'Fatal error: BLOCK DATA PYDATA has not been loaded!'
+ WRITE(*,*) 'The program execution is stopped now!'
+ CALL PYSTOP(8)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTEST
+C...A simple program (disguised as subroutine) to run at installation
+C...as a check that the program works as intended.
+
+ SUBROUTINE PYTEST(MTEST)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/
+C...Local arrays.
+ DIMENSION PSUM(5),PINI(6),PFIN(6)
+
+C...Save defaults for values that are changed.
+ MSTJ1=MSTJ(1)
+ MSTJ3=MSTJ(3)
+ MSTJ11=MSTJ(11)
+ MSTJ42=MSTJ(42)
+ MSTJ43=MSTJ(43)
+ MSTJ44=MSTJ(44)
+ PARJ17=PARJ(17)
+ PARJ22=PARJ(22)
+ PARJ43=PARJ(43)
+ PARJ54=PARJ(54)
+ MST101=MSTJ(101)
+ MST104=MSTJ(104)
+ MST105=MSTJ(105)
+ MST107=MSTJ(107)
+ MST116=MSTJ(116)
+
+C...First part: loop over simple events to be generated.
+ IF(MTEST.GE.1) CALL PYTABU(20)
+ NERR=0
+ DO 180 IEV=1,500
+
+C...Reset parameter values. Switch on some nonstandard features.
+ MSTJ(1)=1
+ MSTJ(3)=0
+ MSTJ(11)=1
+ MSTJ(42)=2
+ MSTJ(43)=4
+ MSTJ(44)=2
+ PARJ(17)=0.1D0
+ PARJ(22)=1.5D0
+ PARJ(43)=1D0
+ PARJ(54)=-0.05D0
+ MSTJ(101)=5
+ MSTJ(104)=5
+ MSTJ(105)=0
+ MSTJ(107)=1
+ IF(IEV.EQ.301.OR.IEV.EQ.351.OR.IEV.EQ.401) MSTJ(116)=3
+
+C...Ten events each for some single jets configurations.
+ IF(IEV.LE.50) THEN
+ ITY=(IEV+9)/10
+ MSTJ(3)=-1
+ IF(ITY.EQ.3.OR.ITY.EQ.4) MSTJ(11)=2
+ IF(ITY.EQ.1) CALL PY1ENT(1,1,15D0,0D0,0D0)
+ IF(ITY.EQ.2) CALL PY1ENT(1,3101,15D0,0D0,0D0)
+ IF(ITY.EQ.3) CALL PY1ENT(1,-2203,15D0,0D0,0D0)
+ IF(ITY.EQ.4) CALL PY1ENT(1,-4,30D0,0D0,0D0)
+ IF(ITY.EQ.5) CALL PY1ENT(1,21,15D0,0D0,0D0)
+
+C...Ten events each for some simple jet systems; string fragmentation.
+ ELSEIF(IEV.LE.130) THEN
+ ITY=(IEV-41)/10
+ IF(ITY.EQ.1) CALL PY2ENT(1,1,-1,40D0)
+ IF(ITY.EQ.2) CALL PY2ENT(1,4,-4,30D0)
+ IF(ITY.EQ.3) CALL PY2ENT(1,2,2103,100D0)
+ IF(ITY.EQ.4) CALL PY2ENT(1,21,21,40D0)
+ IF(ITY.EQ.5) CALL PY3ENT(1,2101,21,-3203,30D0,0.6D0,0.8D0)
+ IF(ITY.EQ.6) CALL PY3ENT(1,5,21,-5,40D0,0.9D0,0.8D0)
+ IF(ITY.EQ.7) CALL PY3ENT(1,21,21,21,60D0,0.7D0,0.5D0)
+ IF(ITY.EQ.8) CALL PY4ENT(1,2,21,21,-2,40D0,
+ & 0.4D0,0.64D0,0.6D0,0.12D0,0.2D0)
+
+C...Seventy events with independent fragmentation and momentum cons.
+ ELSEIF(IEV.LE.200) THEN
+ ITY=1+(IEV-131)/16
+ MSTJ(2)=1+MOD(IEV-131,4)
+ MSTJ(3)=1+MOD((IEV-131)/4,4)
+ IF(ITY.EQ.1) CALL PY2ENT(1,4,-5,40D0)
+ IF(ITY.EQ.2) CALL PY3ENT(1,3,21,-3,40D0,0.9D0,0.4D0)
+ IF(ITY.EQ.3) CALL PY4ENT(1,2,21,21,-2,40D0,
+ & 0.4D0,0.64D0,0.6D0,0.12D0,0.2D0)
+ IF(ITY.GE.4) CALL PY4ENT(1,2,-3,3,-2,40D0,
+ & 0.4D0,0.64D0,0.6D0,0.12D0,0.2D0)
+
+C...A hundred events with random jets (check invariant mass).
+ ELSEIF(IEV.LE.300) THEN
+ 100 DO 110 J=1,5
+ PSUM(J)=0D0
+ 110 CONTINUE
+ NJET=2D0+6D0*PYR(0)
+ DO 130 I=1,NJET
+ KFL=21
+ IF(I.EQ.1) KFL=INT(1D0+4D0*PYR(0))
+ IF(I.EQ.NJET) KFL=-INT(1D0+4D0*PYR(0))
+ EJET=5D0+20D0*PYR(0)
+ THETA=ACOS(2D0*PYR(0)-1D0)
+ PHI=6.2832D0*PYR(0)
+ IF(I.LT.NJET) CALL PY1ENT(-I,KFL,EJET,THETA,PHI)
+ IF(I.EQ.NJET) CALL PY1ENT(I,KFL,EJET,THETA,PHI)
+ IF(I.EQ.1.OR.I.EQ.NJET) MSTJ(93)=1
+ IF(I.EQ.1.OR.I.EQ.NJET) PSUM(5)=PSUM(5)+PYMASS(KFL)
+ DO 120 J=1,4
+ PSUM(J)=PSUM(J)+P(I,J)
+ 120 CONTINUE
+ 130 CONTINUE
+ IF(PSUM(4)**2-PSUM(1)**2-PSUM(2)**2-PSUM(3)**2.LT.
+ & (PSUM(5)+PARJ(32))**2) GOTO 100
+
+C...Fifty e+e- continuum events with matrix elements.
+ ELSEIF(IEV.LE.350) THEN
+ MSTJ(101)=2
+ CALL PYEEVT(0,40D0)
+
+C...Fifty e+e- continuum event with varying shower options.
+ ELSEIF(IEV.LE.400) THEN
+ MSTJ(42)=1+MOD(IEV,2)
+ MSTJ(43)=1+MOD(IEV/2,4)
+ MSTJ(44)=MOD(IEV/8,3)
+ CALL PYEEVT(0,90D0)
+
+C...Fifty e+e- continuum events with coherent shower.
+ ELSEIF(IEV.LE.450) THEN
+ CALL PYEEVT(0,500D0)
+
+C...Fifty Upsilon decays to ggg or gammagg with coherent shower.
+ ELSE
+ CALL PYONIA(5,9.46D0)
+ ENDIF
+
+C...Generate event. Find total momentum, energy and charge.
+ DO 140 J=1,4
+ PINI(J)=PYP(0,J)
+ 140 CONTINUE
+ PINI(6)=PYP(0,6)
+ CALL PYEXEC
+ DO 150 J=1,4
+ PFIN(J)=PYP(0,J)
+ 150 CONTINUE
+ PFIN(6)=PYP(0,6)
+
+C...Check conservation of energy, momentum and charge;
+C...usually exact, but only approximate for single jets.
+ MERR=0
+ IF(IEV.LE.50) THEN
+ IF((PFIN(1)-PINI(1))**2+(PFIN(2)-PINI(2))**2.GE.10D0)
+ & MERR=MERR+1
+ EPZREM=PINI(4)+PINI(3)-PFIN(4)-PFIN(3)
+ IF(EPZREM.LT.0D0.OR.EPZREM.GT.2D0*PARJ(31)) MERR=MERR+1
+ IF(ABS(PFIN(6)-PINI(6)).GT.2.1D0) MERR=MERR+1
+ ELSE
+ DO 160 J=1,4
+ IF(ABS(PFIN(J)-PINI(J)).GT.0.0001D0*PINI(4)) MERR=MERR+1
+ 160 CONTINUE
+ IF(ABS(PFIN(6)-PINI(6)).GT.0.1D0) MERR=MERR+1
+ ENDIF
+ IF(MERR.NE.0) WRITE(MSTU(11),5000) (PINI(J),J=1,4),PINI(6),
+ & (PFIN(J),J=1,4),PFIN(6)
+
+C...Check that all KF codes are known ones, and that partons/particles
+C...satisfy energy-momentum-mass relation. Store particle statistics.
+ DO 170 I=1,N
+ IF(K(I,1).GT.20) GOTO 170
+ IF(PYCOMP(K(I,2)).EQ.0) THEN
+ WRITE(MSTU(11),5100) I
+ MERR=MERR+1
+ ENDIF
+ PD=P(I,4)**2-P(I,1)**2-P(I,2)**2-P(I,3)**2-P(I,5)**2
+ IF(ABS(PD).GT.MAX(0.1D0,0.001D0*P(I,4)**2).OR.P(I,4).LT.0D0)
+ & THEN
+ WRITE(MSTU(11),5200) I
+ MERR=MERR+1
+ ENDIF
+ 170 CONTINUE
+ IF(MTEST.GE.1) CALL PYTABU(21)
+
+C...List all erroneous events and some normal ones.
+ IF(MERR.NE.0.OR.MSTU(24).NE.0.OR.MSTU(28).NE.0) THEN
+ IF(MERR.GE.1) WRITE(MSTU(11),6400)
+ CALL PYLIST(2)
+ ELSEIF(MTEST.GE.1.AND.MOD(IEV-5,100).EQ.0) THEN
+ CALL PYLIST(1)
+ ENDIF
+
+C...Stop execution if too many errors.
+ IF(MERR.NE.0) NERR=NERR+1
+ IF(NERR.GE.10) THEN
+ WRITE(MSTU(11),6300)
+ CALL PYLIST(1)
+ CALL PYSTOP(9)
+ ENDIF
+ 180 CONTINUE
+
+C...Summarize result of run.
+ IF(MTEST.GE.1) CALL PYTABU(22)
+
+C...Reset commonblock variables changed during run.
+ MSTJ(1)=MSTJ1
+ MSTJ(3)=MSTJ3
+ MSTJ(11)=MSTJ11
+ MSTJ(42)=MSTJ42
+ MSTJ(43)=MSTJ43
+ MSTJ(44)=MSTJ44
+ PARJ(17)=PARJ17
+ PARJ(22)=PARJ22
+ PARJ(43)=PARJ43
+ PARJ(54)=PARJ54
+ MSTJ(101)=MST101
+ MSTJ(104)=MST104
+ MSTJ(105)=MST105
+ MSTJ(107)=MST107
+ MSTJ(116)=MST116
+
+C...Second part: complete events of various kinds.
+C...Common initial values. Loop over initiating conditions.
+ MSTP(122)=MAX(0,MIN(2,MTEST))
+ MDCY(PYCOMP(111),1)=0
+ DO 230 IPROC=1,8
+
+C...Reset process type, kinematics cuts, and the flags used.
+ MSEL=0
+ DO 190 ISUB=1,500
+ MSUB(ISUB)=0
+ 190 CONTINUE
+ CKIN(1)=2D0
+ CKIN(3)=0D0
+ MSTP(2)=1
+ MSTP(11)=0
+ MSTP(33)=0
+ MSTP(81)=1
+ MSTP(82)=1
+ MSTP(111)=1
+ MSTP(131)=0
+ MSTP(133)=0
+ PARP(131)=0.01D0
+
+C...Prompt photon production at fixed target.
+ IF(IPROC.EQ.1) THEN
+ PZSUM=300D0
+ PESUM=SQRT(PZSUM**2+PYMASS(211)**2)+PYMASS(2212)
+ PQSUM=2D0
+ MSEL=10
+ CKIN(3)=5D0
+ CALL PYINIT('FIXT','pi+','p',PZSUM)
+
+C...QCD processes at ISR energies.
+ ELSEIF(IPROC.EQ.2) THEN
+ PESUM=63D0
+ PZSUM=0D0
+ PQSUM=2D0
+ MSEL=1
+ CKIN(3)=5D0
+ CALL PYINIT('CMS','p','p',PESUM)
+
+C...W production + multiple interactions at CERN Collider.
+ ELSEIF(IPROC.EQ.3) THEN
+ PESUM=630D0
+ PZSUM=0D0
+ PQSUM=0D0
+ MSEL=12
+ CKIN(1)=20D0
+ MSTP(82)=4
+ MSTP(2)=2
+ MSTP(33)=3
+ CALL PYINIT('CMS','p','pbar',PESUM)
+
+C...W/Z gauge boson pairs + pileup events at the Tevatron.
+ ELSEIF(IPROC.EQ.4) THEN
+ PESUM=1800D0
+ PZSUM=0D0
+ PQSUM=0D0
+ MSUB(22)=1
+ MSUB(23)=1
+ MSUB(25)=1
+ CKIN(1)=200D0
+ MSTP(111)=0
+ MSTP(131)=1
+ MSTP(133)=2
+ PARP(131)=0.04D0
+ CALL PYINIT('CMS','p','pbar',PESUM)
+
+C...Higgs production at LHC.
+ ELSEIF(IPROC.EQ.5) THEN
+ PESUM=15400D0
+ PZSUM=0D0
+ PQSUM=2D0
+ MSUB(3)=1
+ MSUB(102)=1
+ MSUB(123)=1
+ MSUB(124)=1
+ PMAS(25,1)=300D0
+ CKIN(1)=200D0
+ MSTP(81)=0
+ MSTP(111)=0
+ CALL PYINIT('CMS','p','p',PESUM)
+
+C...Z' production at SSC.
+ ELSEIF(IPROC.EQ.6) THEN
+ PESUM=40000D0
+ PZSUM=0D0
+ PQSUM=2D0
+ MSEL=21
+ PMAS(32,1)=600D0
+ CKIN(1)=400D0
+ MSTP(81)=0
+ MSTP(111)=0
+ CALL PYINIT('CMS','p','p',PESUM)
+
+C...W pair production at 1 TeV e+e- collider.
+ ELSEIF(IPROC.EQ.7) THEN
+ PESUM=1000D0
+ PZSUM=0D0
+ PQSUM=0D0
+ MSUB(25)=1
+ MSUB(69)=1
+ MSTP(11)=1
+ CALL PYINIT('CMS','e+','e-',PESUM)
+
+C...Deep inelastic scattering at a LEP+LHC ep collider.
+ ELSEIF(IPROC.EQ.8) THEN
+ P(1,1)=0D0
+ P(1,2)=0D0
+ P(1,3)=8000D0
+ P(2,1)=0D0
+ P(2,2)=0D0
+ P(2,3)=-80D0
+ PESUM=8080D0
+ PZSUM=7920D0
+ PQSUM=0D0
+ MSUB(10)=1
+ CKIN(3)=50D0
+ MSTP(111)=0
+ CALL PYINIT('3MOM','p','e-',PESUM)
+ ENDIF
+
+C...Generate 20 events of each required type.
+ DO 220 IEV=1,20
+ CALL PYEVNT
+ PESUMM=PESUM
+ IF(IPROC.EQ.4) PESUMM=MSTI(41)*PESUM
+
+C...Check conservation of energy/momentum/flavour.
+ PINI(1)=0D0
+ PINI(2)=0D0
+ PINI(3)=PZSUM
+ PINI(4)=PESUMM
+ PINI(6)=PQSUM
+ DO 200 J=1,4
+ PFIN(J)=PYP(0,J)
+ 200 CONTINUE
+ PFIN(6)=PYP(0,6)
+ MERR=0
+ DEVE=ABS(PFIN(4)-PINI(4))+ABS(PFIN(3)-PINI(3))
+ DEVT=ABS(PFIN(1)-PINI(1))+ABS(PFIN(2)-PINI(2))
+ DEVQ=ABS(PFIN(6)-PINI(6))
+ IF(DEVE.GT.2D-3*PESUM.OR.DEVT.GT.MAX(0.01D0,1D-4*PESUM).OR.
+ & DEVQ.GT.0.1D0) MERR=1
+ IF(MERR.NE.0) WRITE(MSTU(11),5000) (PINI(J),J=1,4),PINI(6),
+ & (PFIN(J),J=1,4),PFIN(6)
+
+C...Check that all KF codes are known ones, and that partons/particles
+C...satisfy energy-momentum-mass relation.
+ DO 210 I=1,N
+ IF(K(I,1).GT.20) GOTO 210
+ IF(PYCOMP(K(I,2)).EQ.0) THEN
+ WRITE(MSTU(11),5100) I
+ MERR=MERR+1
+ ENDIF
+ PD=P(I,4)**2-P(I,1)**2-P(I,2)**2-P(I,3)**2-P(I,5)**2*
+ & SIGN(1D0,P(I,5))
+ IF(ABS(PD).GT.MAX(0.1D0,0.002D0*P(I,4)**2,0.002D0*P(I,5)**2)
+ & .OR.(P(I,5).GE.0D0.AND.P(I,4).LT.0D0)) THEN
+ WRITE(MSTU(11),5200) I
+ MERR=MERR+1
+ ENDIF
+ 210 CONTINUE
+
+C...Listing of erroneous events, and first event of each type.
+ IF(MERR.GE.1) NERR=NERR+1
+ IF(NERR.GE.10) THEN
+ WRITE(MSTU(11),6300)
+ CALL PYLIST(1)
+ CALL PYSTOP(9)
+ ENDIF
+ IF(MTEST.GE.1.AND.(MERR.GE.1.OR.IEV.EQ.1)) THEN
+ IF(MERR.GE.1) WRITE(MSTU(11),6400)
+ CALL PYLIST(1)
+ ENDIF
+ 220 CONTINUE
+
+C...List statistics for each process type.
+ IF(MTEST.GE.1) CALL PYSTAT(1)
+ 230 CONTINUE
+
+C...Summarize result of run.
+ IF(NERR.EQ.0) WRITE(MSTU(11),6500)
+ IF(NERR.GT.0) WRITE(MSTU(11),6600) NERR
+
+C...Format statements for output.
+ 5000 FORMAT(/' Momentum, energy and/or charge were not conserved ',
+ &'in following event'/' sum of',9X,'px',11X,'py',11X,'pz',11X,
+ &'E',8X,'charge'/' before',2X,4(1X,F12.5),1X,F8.2/' after',3X,
+ &4(1X,F12.5),1X,F8.2)
+ 5100 FORMAT(/5X,'Entry no.',I4,' in following event not known code')
+ 5200 FORMAT(/5X,'Entry no.',I4,' in following event has faulty ',
+ &'kinematics')
+ 6300 FORMAT(/5X,'This is the tenth error experienced! Something is ',
+ &'wrong.'/5X,'Execution will be stopped after listing of event.')
+ 6400 FORMAT(5X,'Faulty event follows:')
+ 6500 FORMAT(//5X,'End result of PYTEST: no errors detected.')
+ 6600 FORMAT(//5X,'End result of PYTEST:',I2,' errors detected.'/
+ &5X,'This should not have happened!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYHEPC
+C...Converts PYTHIA event record contents to or from
+C...the standard event record commonblock.
+
+ SUBROUTINE PYHEPC(MCONV)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...HEPEVT commonblock.
+ PARAMETER (NMXHEP=4000)
+ COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHEP),IDHEP(NMXHEP),
+ &JMOHEP(2,NMXHEP),JDAHEP(2,NMXHEP),PHEP(5,NMXHEP),VHEP(4,NMXHEP)
+ DOUBLE PRECISION PHEP,VHEP
+ SAVE /HEPEVT/
+
+C...Store HEPEVT commonblock size (for interfacing issues).
+ MSTU(8)=NMXHEP
+
+C...Conversion from PYTHIA to standard, the easy part.
+ IF(MCONV.EQ.1) THEN
+ NEVHEP=0
+ IF(N.GT.NMXHEP) CALL PYERRM(8,
+ & '(PYHEPC:) no more space in /HEPEVT/')
+ NHEP=MIN(N,NMXHEP)
+ DO 150 I=1,NHEP
+ ISTHEP(I)=0
+ IF(K(I,1).GE.1.AND.K(I,1).LE.10) ISTHEP(I)=1
+ IF(K(I,1).GE.11.AND.K(I,1).LE.20) ISTHEP(I)=2
+ IF(K(I,1).GE.21.AND.K(I,1).LE.30) ISTHEP(I)=3
+ IF(K(I,1).GE.31.AND.K(I,1).LE.100) ISTHEP(I)=K(I,1)
+ IDHEP(I)=K(I,2)
+ JMOHEP(1,I)=K(I,3)
+ JMOHEP(2,I)=0
+ IF(K(I,1).NE.3.AND.K(I,1).NE.13.AND.K(I,1).NE.14) THEN
+ JDAHEP(1,I)=K(I,4)
+ JDAHEP(2,I)=K(I,5)
+ ELSE
+ JDAHEP(1,I)=0
+ JDAHEP(2,I)=0
+ ENDIF
+ DO 100 J=1,5
+ PHEP(J,I)=P(I,J)
+ 100 CONTINUE
+ DO 110 J=1,4
+ VHEP(J,I)=V(I,J)
+ 110 CONTINUE
+
+C...Check if new event (from pileup).
+ IF(I.EQ.1) THEN
+ INEW=1
+ ELSE
+ IF(K(I,1).EQ.21.AND.K(I-1,1).NE.21) INEW=I
+ ENDIF
+
+C...Fill in missing mother information.
+ IF(I.GE.INEW+2.AND.K(I,1).EQ.21.AND.K(I,3).EQ.0) THEN
+ IMO1=I-2
+ 120 IF(IMO1.GT.INEW.AND.K(IMO1+1,1).EQ.21.AND.K(IMO1+1,3).EQ.0)
+ & THEN
+ IMO1=IMO1-1
+ GOTO 120
+ ENDIF
+ JMOHEP(1,I)=IMO1
+ JMOHEP(2,I)=IMO1+1
+ ELSEIF(K(I,2).GE.91.AND.K(I,2).LE.93) THEN
+ I1=K(I,3)-1
+ 130 I1=I1+1
+ IF(I1.GE.I) CALL PYERRM(8,
+ & '(PYHEPC:) translation of inconsistent event history')
+ IF(I1.LT.I.AND.K(I1,1).NE.1.AND.K(I1,1).NE.11) GOTO 130
+ KC=PYCOMP(K(I1,2))
+ IF(I1.LT.I.AND.KC.EQ.0) GOTO 130
+ IF(I1.LT.I.AND.KCHG(KC,2).EQ.0) GOTO 130
+ JMOHEP(2,I)=I1
+ ELSEIF(K(I,2).EQ.94) THEN
+ NJET=2
+ IF(NHEP.GE.I+3.AND.K(I+3,3).LE.I) NJET=3
+ IF(NHEP.GE.I+4.AND.K(I+4,3).LE.I) NJET=4
+ JMOHEP(2,I)=MOD(K(I+NJET,4)/MSTU(5),MSTU(5))
+ IF(JMOHEP(2,I).EQ.JMOHEP(1,I)) JMOHEP(2,I)=
+ & MOD(K(I+1,4)/MSTU(5),MSTU(5))
+ ENDIF
+
+C...Fill in missing daughter information.
+ IF(K(I,2).EQ.94.AND.MSTU(16).NE.2) THEN
+ DO 140 I1=JDAHEP(1,I),JDAHEP(2,I)
+ I2=MOD(K(I1,4)/MSTU(5),MSTU(5))
+ JDAHEP(1,I2)=I
+ 140 CONTINUE
+ ENDIF
+ IF(K(I,2).GE.91.AND.K(I,2).LE.94) GOTO 150
+ I1=JMOHEP(1,I)
+ IF(I1.LE.0.OR.I1.GT.NHEP) GOTO 150
+ IF(K(I1,1).NE.13.AND.K(I1,1).NE.14) GOTO 150
+ IF(JDAHEP(1,I1).EQ.0) THEN
+ JDAHEP(1,I1)=I
+ ELSE
+ JDAHEP(2,I1)=I
+ ENDIF
+ 150 CONTINUE
+ DO 160 I=1,NHEP
+ IF(K(I,1).NE.13.AND.K(I,1).NE.14) GOTO 160
+ IF(JDAHEP(2,I).EQ.0) JDAHEP(2,I)=JDAHEP(1,I)
+ 160 CONTINUE
+
+C...Conversion from standard to PYTHIA, the easy part.
+ ELSE
+ IF(NHEP.GT.MSTU(4)) CALL PYERRM(8,
+ & '(PYHEPC:) no more space in /PYJETS/')
+ N=MIN(NHEP,MSTU(4))
+ NKQ=0
+ KQSUM=0
+ DO 190 I=1,N
+ K(I,1)=0
+ IF(ISTHEP(I).EQ.1) K(I,1)=1
+ IF(ISTHEP(I).EQ.2) K(I,1)=11
+ IF(ISTHEP(I).EQ.3) K(I,1)=21
+ K(I,2)=IDHEP(I)
+ K(I,3)=JMOHEP(1,I)
+ K(I,4)=JDAHEP(1,I)
+ K(I,5)=JDAHEP(2,I)
+ DO 170 J=1,5
+ P(I,J)=PHEP(J,I)
+ 170 CONTINUE
+ DO 180 J=1,4
+ V(I,J)=VHEP(J,I)
+ 180 CONTINUE
+ V(I,5)=0D0
+ IF(ISTHEP(I).EQ.2.AND.PHEP(4,I).GT.PHEP(5,I)) THEN
+ I1=JDAHEP(1,I)
+ IF(I1.GT.0.AND.I1.LE.NHEP) V(I,5)=(VHEP(4,I1)-VHEP(4,I))*
+ & PHEP(5,I)/PHEP(4,I)
+ ENDIF
+
+C...Fill in missing information on colour connection in jet systems.
+ IF(ISTHEP(I).EQ.1) THEN
+ KC=PYCOMP(K(I,2))
+ KQ=0
+ IF(KC.NE.0) KQ=KCHG(KC,2)*ISIGN(1,K(I,2))
+ IF(KQ.NE.0) NKQ=NKQ+1
+ IF(KQ.NE.2) KQSUM=KQSUM+KQ
+ IF(KQ.NE.0.AND.KQSUM.NE.0) THEN
+ K(I,1)=2
+ ELSEIF(KQ.EQ.2.AND.I.LT.N) THEN
+ IF(K(I+1,2).EQ.21) K(I,1)=2
+ ENDIF
+ ENDIF
+ 190 CONTINUE
+ IF(NKQ.EQ.1.OR.KQSUM.NE.0) CALL PYERRM(8,
+ & '(PYHEPC:) input parton configuration not colour singlet')
+ ENDIF
+
+ END
+
+C*********************************************************************
+
+C...PYINIT
+C...Initializes the generation procedure; finds maxima of the
+C...differential cross-sections to be used for weighting.
+
+ SUBROUTINE PYINIT(FRAME,BEAM,TARGET,WIN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYDAT4/,/PYSUBS/,/PYPARS/,
+ &/PYINT1/,/PYINT2/,/PYINT5/
+C...Local arrays and character variables.
+ DIMENSION ALAMIN(20),NFIN(20)
+ CHARACTER*(*) FRAME,BEAM,TARGET
+ CHARACTER CHFRAM*12,CHBEAM*12,CHTARG*12,CHLH(2)*6
+
+C...Interface to PDFLIB.
+ COMMON/W50511/NPTYPE,NGROUP,NSET,MODE,NFL,LO,TMAS
+ COMMON/LW50512/QCDL4,QCDL5
+ SAVE /W50511/
+ SAVE /LW50512/
+ DOUBLE PRECISION VALUE(20),TMAS,QCDL4,QCDL5
+ CHARACTER*20 PARM(20)
+ DATA VALUE/20*0D0/,PARM/20*' '/
+
+C...Data:Lambda and n_f values for parton distributions..
+ DATA ALAMIN/0.177D0,0.239D0,0.247D0,0.2322D0,0.248D0,0.248D0,
+ &0.192D0,0.326D0,2*0.2D0,0.2D0,0.2D0,0.29D0,0.2D0,0.4D0,5*0.2D0/,
+ &NFIN/20*4/
+ DATA CHLH/'lepton','hadron'/
+
+C...Check that BLOCK DATA PYDATA has been loaded.
+ CALL PYCKBD
+
+C...Reset MINT and VINT arrays. Write headers.
+ MSTI(53)=0
+ DO 100 J=1,400
+ MINT(J)=0
+ VINT(J)=0D0
+ 100 CONTINUE
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5100)
+
+C...Reset error counters.
+ MSTU(23)=0
+ MSTU(27)=0
+ MSTU(30)=0
+
+C...Reset processes that should not be on.
+ MSUB(96)=0
+ MSUB(97)=0
+
+C...Select global FSR/ISR/UE parameter set = 'tune'
+C...See routine PYTUNE for details
+ IF (MSTP(5).NE.0) THEN
+ MSTP5=MSTP(5)
+ CALL PYTUNE(MSTP5)
+ ENDIF
+
+C...Call user process initialization routine.
+ IF(FRAME(1:1).EQ.'u'.OR.FRAME(1:1).EQ.'U') THEN
+ MSEL=0
+ CALL UPINIT
+ MSEL=0
+ ENDIF
+
+C...Maximum 4 generations; set maximum number of allowed flavours.
+ MSTP(1)=MIN(4,MSTP(1))
+ MSTU(114)=MIN(MSTU(114),2*MSTP(1))
+ MSTP(58)=MIN(MSTP(58),2*MSTP(1))
+
+C...Sum up Cabibbo-Kobayashi-Maskawa factors for each quark/lepton.
+ DO 120 I=-20,20
+ VINT(180+I)=0D0
+ IA=IABS(I)
+ IF(IA.GE.1.AND.IA.LE.2*MSTP(1)) THEN
+ DO 110 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IF(IB.GE.6.AND.MSTP(9).EQ.0) GOTO 110
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).EQ.1.OR.MDME(IDC,1).EQ.IPM) VINT(180+I)=
+ & VINT(180+I)+VCKM((IA+1)/2,(IB+1)/2)
+ 110 CONTINUE
+ ELSEIF(IA.GE.11.AND.IA.LE.10+2*MSTP(1)) THEN
+ VINT(180+I)=1D0
+ ENDIF
+ 120 CONTINUE
+
+C...Initialize parton distributions: PDFLIB.
+ IF(MSTP(52).EQ.2) THEN
+ PARM(1)='NPTYPE'
+ VALUE(1)=1
+ PARM(2)='NGROUP'
+ VALUE(2)=MSTP(51)/1000
+ PARM(3)='NSET'
+ VALUE(3)=MOD(MSTP(51),1000)
+ PARM(4)='TMAS'
+ VALUE(4)=PMAS(6,1)
+ CALL PDFSET_ALICE(PARM,VALUE)
+ MINT(93)=1000000+MSTP(51)
+ ENDIF
+
+C...Choose Lambda value to use in alpha-strong.
+ MSTU(111)=MSTP(2)
+ IF(MSTP(3).GE.2) THEN
+ ALAM=0.2D0
+ NF=4
+ IF(MSTP(52).EQ.1.AND.MSTP(51).GE.1.AND.MSTP(51).LE.20) THEN
+ ALAM=ALAMIN(MSTP(51))
+ NF=NFIN(MSTP(51))
+ ELSEIF(MSTP(52).EQ.2.AND.NFL.EQ.5) THEN
+ ALAM=QCDL5
+ NF=5
+ ELSEIF(MSTP(52).EQ.2) THEN
+ ALAM=QCDL4
+ NF=4
+ ENDIF
+ PARP(1)=ALAM
+ PARP(61)=ALAM
+ PARP(72)=ALAM
+ PARU(112)=ALAM
+ MSTU(112)=NF
+ IF(MSTP(3).EQ.3) PARJ(81)=ALAM
+ ENDIF
+
+C...Initialize the SUSY generation: couplings, masses,
+C...decay modes, branching ratios, and so on.
+ CALL PYMSIN
+C...Initialize widths and partial widths for resonances.
+ CALL PYINRE
+C...Set Z0 mass and width for e+e- routines.
+ PARJ(123)=PMAS(23,1)
+ PARJ(124)=PMAS(23,2)
+
+C...Identify beam and target particles and frame of process.
+ CHFRAM=FRAME//' '
+ CHBEAM=BEAM//' '
+ CHTARG=TARGET//' '
+ CALL PYINBM(CHFRAM,CHBEAM,CHTARG,WIN)
+ IF(MINT(65).EQ.1) GOTO 170
+
+C...For gamma-p or gamma-gamma allow many (3 or 6) alternatives.
+C...For e-gamma allow 2 alternatives.
+ MINT(121)=1
+ IF(MSTP(14).EQ.10.AND.(MSEL.EQ.1.OR.MSEL.EQ.2)) THEN
+ IF((MINT(11).EQ.22.OR.MINT(12).EQ.22).AND.
+ & (IABS(MINT(11)).GT.100.OR.IABS(MINT(12)).GT.100)) MINT(121)=3
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22) MINT(121)=6
+ IF((MINT(11).EQ.22.OR.MINT(12).EQ.22).AND.
+ & (IABS(MINT(11)).EQ.11.OR.IABS(MINT(12)).EQ.11)) MINT(121)=2
+ ELSEIF(MSTP(14).EQ.20.AND.(MSEL.EQ.1.OR.MSEL.EQ.2)) THEN
+ IF((MINT(11).EQ.22.OR.MINT(12).EQ.22).AND.
+ & (IABS(MINT(11)).GT.100.OR.IABS(MINT(12)).GT.100)) MINT(121)=3
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22) MINT(121)=9
+ ELSEIF(MSTP(14).EQ.25.AND.(MSEL.EQ.1.OR.MSEL.EQ.2)) THEN
+ IF((MINT(11).EQ.22.OR.MINT(12).EQ.22).AND.
+ & (IABS(MINT(11)).GT.100.OR.IABS(MINT(12)).GT.100)) MINT(121)=2
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22) MINT(121)=4
+ ELSEIF(MSTP(14).EQ.30.AND.(MSEL.EQ.1.OR.MSEL.EQ.2)) THEN
+ IF((MINT(11).EQ.22.OR.MINT(12).EQ.22).AND.
+ & (IABS(MINT(11)).GT.100.OR.IABS(MINT(12)).GT.100)) MINT(121)=4
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22) MINT(121)=13
+ ENDIF
+ MINT(123)=MSTP(14)
+ IF((MSTP(14).EQ.10.OR.MSTP(14).EQ.20.OR.MSTP(14).EQ.25.OR.
+ &MSTP(14).EQ.30).AND.MSEL.NE.1.AND.MSEL.NE.2) MINT(123)=0
+ IF(MSTP(14).GE.11.AND.MSTP(14).LE.19) THEN
+ IF(MSTP(14).EQ.11) MINT(123)=0
+ IF(MSTP(14).EQ.12.OR.MSTP(14).EQ.14) MINT(123)=5
+ IF(MSTP(14).EQ.13.OR.MSTP(14).EQ.17) MINT(123)=6
+ IF(MSTP(14).EQ.15) MINT(123)=2
+ IF(MSTP(14).EQ.16.OR.MSTP(14).EQ.18) MINT(123)=7
+ IF(MSTP(14).EQ.19) MINT(123)=3
+ ELSEIF(MSTP(14).GE.21.AND.MSTP(14).LE.24) THEN
+ IF(MSTP(14).EQ.21) MINT(123)=0
+ IF(MSTP(14).EQ.22.OR.MSTP(14).EQ.23) MINT(123)=4
+ IF(MSTP(14).EQ.24) MINT(123)=1
+ ELSEIF(MSTP(14).GE.26.AND.MSTP(14).LE.29) THEN
+ IF(MSTP(14).EQ.26.OR.MSTP(14).EQ.28) MINT(123)=8
+ IF(MSTP(14).EQ.27.OR.MSTP(14).EQ.29) MINT(123)=9
+ ENDIF
+
+C...Set up kinematics of process.
+ CALL PYINKI(0)
+
+C...Set up kinematics for photons inside leptons.
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) CALL PYGAGA(1,WTGAGA)
+
+C...Precalculate flavour selection weights.
+ CALL PYKFIN
+
+C...Loop over gamma-p or gamma-gamma alternatives.
+ CKIN3=CKIN(3)
+ MSAV48=0
+ DO 160 IGA=1,MINT(121)
+ CKIN(3)=CKIN3
+ MINT(122)=IGA
+
+C...Select partonic subprocesses to be included in the simulation.
+ CALL PYINPR
+ MINT(101)=1
+ MINT(102)=1
+ MINT(103)=MINT(11)
+ MINT(104)=MINT(12)
+
+C...Count number of subprocesses on.
+ MINT(48)=0
+ DO 130 ISUB=1,500
+ IF(MINT(50).EQ.0.AND.ISUB.GE.91.AND.ISUB.LE.96.AND.
+ & MSUB(ISUB).EQ.1.AND.MINT(121).GT.1) THEN
+ MSUB(ISUB)=0
+ ELSEIF(MINT(50).EQ.0.AND.ISUB.GE.91.AND.ISUB.LE.96.AND.
+ & MSUB(ISUB).EQ.1) THEN
+ WRITE(MSTU(11),5200) ISUB,CHLH(MINT(41)),CHLH(MINT(42))
+ CALL PYSTOP(1)
+ ELSEIF(MSUB(ISUB).EQ.1.AND.ISET(ISUB).EQ.-1) THEN
+ WRITE(MSTU(11),5300) ISUB
+ CALL PYSTOP(1)
+ ELSEIF(MSUB(ISUB).EQ.1.AND.ISET(ISUB).LE.-2) THEN
+ WRITE(MSTU(11),5400) ISUB
+ CALL PYSTOP(1)
+ ELSEIF(MSUB(ISUB).EQ.1) THEN
+ MINT(48)=MINT(48)+1
+ ENDIF
+ 130 CONTINUE
+
+C...Stop or raise warning flag if no subprocesses on.
+ IF(MINT(121).EQ.1.AND.MINT(48).EQ.0) THEN
+ IF(MSTP(127).NE.1) THEN
+ WRITE(MSTU(11),5500)
+ CALL PYSTOP(1)
+ ELSE
+ WRITE(MSTU(11),5700)
+ MSTI(53)=1
+ ENDIF
+ ENDIF
+ MINT(49)=MINT(48)-MSUB(91)-MSUB(92)-MSUB(93)-MSUB(94)
+ MSAV48=MSAV48+MINT(48)
+
+C...Reset variables for cross-section calculation.
+ DO 150 I=0,500
+ DO 140 J=1,3
+ NGEN(I,J)=0
+ XSEC(I,J)=0D0
+ 140 CONTINUE
+ 150 CONTINUE
+
+C...Find parametrized total cross-sections.
+ CALL PYXTOT
+ VINT(318)=VINT(317)
+
+C...Maxima of differential cross-sections.
+ IF(MSTP(121).LE.1) CALL PYMAXI
+
+C...Initialize possibility of pileup events.
+ IF(MINT(121).GT.1) MSTP(131)=0
+ IF(MSTP(131).NE.0) CALL PYPILE(1)
+
+C...Initialize multiple interactions with variable impact parameter.
+ IF(MINT(50).EQ.1) THEN
+ PTMN=PARP(82)*(VINT(1)/PARP(89))**PARP(90)
+ IF(MOD(MSTP(81),10).EQ.0.AND.(CKIN(3).GT.PTMN.OR.
+ & ((MSEL.NE.1.AND.MSEL.NE.2)))) MSTP(82)=MIN(1,MSTP(82))
+ IF((MINT(49).NE.0.OR.MSTP(131).NE.0).AND.MSTP(82).GE.2) THEN
+ MINT(35)=1
+ CALL PYMULT(1)
+ MINT(35)=3
+ CALL PYMIGN(1)
+ ENDIF
+ ENDIF
+
+C...Save results for gamma-p and gamma-gamma alternatives.
+ IF(MINT(121).GT.1) CALL PYSAVE(1,IGA)
+ 160 CONTINUE
+
+C...Initialization finished.
+ IF(MSAV48.EQ.0) THEN
+ IF(MSTP(127).NE.1) THEN
+ WRITE(MSTU(11),5500)
+ CALL PYSTOP(1)
+ ELSE
+ WRITE(MSTU(11),5700)
+ MSTI(53)=1
+ ENDIF
+ ENDIF
+ 170 IF(MSTP(122).GE.1) WRITE(MSTU(11),5600)
+
+C...Formats for initialization information.
+ 5100 FORMAT('1',18('*'),1X,'PYINIT: initialization of PYTHIA ',
+ &'routines',1X,17('*'))
+ 5200 FORMAT(1X,'Error: process number ',I3,' not meaningful for ',A6,
+ &'-',A6,' interactions.'/1X,'Execution stopped!')
+ 5300 FORMAT(1X,'Error: requested subprocess',I4,' not implemented.'/
+ &1X,'Execution stopped!')
+ 5400 FORMAT(1X,'Error: requested subprocess',I4,' not existing.'/
+ &1X,'Execution stopped!')
+ 5500 FORMAT(1X,'Error: no subprocess switched on.'/
+ &1X,'Execution stopped.')
+ 5600 FORMAT(/1X,22('*'),1X,'PYINIT: initialization completed',1X,
+ &22('*'))
+ 5700 FORMAT(1X,'Error: no subprocess switched on.'/
+ &1X,'Execution will stop if you try to generate events.')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYEVNT
+C...Administers the generation of a high-pT event via calls to
+C...a number of subroutines.
+
+ SUBROUTINE PYEVNT
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ SAVE /PYJETS/,/PYDAT1/,/PYCTAG/,/PYDAT2/,/PYDAT3/,/PYPARS/,
+ &/PYINT1/,/PYINT2/,/PYINT4/,/PYINT5/
+C...Local array.
+ DIMENSION VTX(4)
+
+C...Optionally let PYEVNW do the whole job.
+ IF(MSTP(81).GE.20) THEN
+ CALL PYEVNW
+ RETURN
+ ENDIF
+
+C...Stop if no subprocesses on.
+ IF(MINT(121).EQ.1.AND.MSTI(53).EQ.1) THEN
+ WRITE(MSTU(11),5100)
+ CALL PYSTOP(1)
+ ENDIF
+
+C...Initial values for some counters.
+ MSTU(1)=0
+ MSTU(2)=0
+ N=0
+ MINT(5)=MINT(5)+1
+ MINT(7)=0
+ MINT(8)=0
+ MINT(30)=0
+ MINT(83)=0
+ MINT(84)=MSTP(126)
+ MSTU(24)=0
+ MSTU70=0
+ MSTJ14=MSTJ(14)
+C...Normally, use K(I,4:5) colour info rather than /PYCTAG/.
+ NCT=0
+ MINT(33)=0
+
+C...Let called routines know call is from PYEVNT (not PYEVNW).
+ MINT(35)=1
+ IF (MSTP(81).GE.10) MINT(35)=2
+
+C...If variable energies: redo incoming kinematics and cross-section.
+ MSTI(61)=0
+ IF(MSTP(171).EQ.1) THEN
+ CALL PYINKI(1)
+ IF(MSTI(61).EQ.1) THEN
+ MINT(5)=MINT(5)-1
+ RETURN
+ ENDIF
+ IF(MINT(121).GT.1) CALL PYSAVE(3,1)
+ CALL PYXTOT
+ ENDIF
+
+C...Loop over number of pileup events; check space left.
+ IF(MSTP(131).LE.0) THEN
+ NPILE=1
+ ELSE
+ CALL PYPILE(2)
+ NPILE=MINT(81)
+ ENDIF
+ DO 270 IPILE=1,NPILE
+ IF(MINT(84)+100.GE.MSTU(4)) THEN
+ CALL PYERRM(11,
+ & '(PYEVNT:) no more space in PYJETS for pileup events')
+ IF(MSTU(21).GE.1) GOTO 280
+ ENDIF
+ MINT(82)=IPILE
+
+C...Generate variables of hard scattering.
+ MINT(51)=0
+ MSTI(52)=0
+ 100 CONTINUE
+ IF(MINT(51).NE.0.OR.MSTU(24).NE.0) MSTI(52)=MSTI(52)+1
+ MINT(31)=0
+ MINT(39)=0
+ MINT(51)=0
+ MINT(57)=0
+ CALL PYRAND
+ IF(MSTI(61).EQ.1) THEN
+ MINT(5)=MINT(5)-1
+ RETURN
+ ENDIF
+ IF(MINT(51).EQ.2) RETURN
+ ISUB=MINT(1)
+ IF(MSTP(111).EQ.-1) GOTO 260
+
+C...Loopback point if PYPREP fails, especially for junction topologies.
+ NPREP=0
+ MNT31S=MINT(31)
+ 110 NPREP=NPREP+1
+ MINT(31)=MNT31S
+
+ IF((ISUB.LE.90.OR.ISUB.GE.95).AND.ISUB.NE.99) THEN
+C...Hard scattering (including low-pT):
+C...reconstruct kinematics and colour flow of hard scattering.
+ MINT31=MINT(31)
+ 120 MINT(31)=MINT31
+ MINT(51)=0
+ CALL PYSCAT
+ IF(MINT(51).EQ.1) GOTO 100
+ IPU1=MINT(84)+1
+ IPU2=MINT(84)+2
+ IF(ISUB.EQ.95) GOTO 140
+
+C...Reset statistics on activity in event.
+ DO 130 J=351,359
+ MINT(J)=0
+ VINT(J)=0D0
+ 130 CONTINUE
+
+C...Showering of initial state partons (optional).
+ NFIN=N
+ ALAMSV=PARJ(81)
+ PARJ(81)=PARP(72)
+ IF(MSTP(61).GE.1.AND.MINT(47).GE.2.AND.MINT(111).NE.12)
+ & CALL PYSSPA(IPU1,IPU2)
+ PARJ(81)=ALAMSV
+ IF(MINT(51).EQ.1) GOTO 100
+
+C...Showering of final state partons (optional).
+ ALAMSV=PARJ(81)
+ PARJ(81)=PARP(72)
+ IF(MSTP(71).GE.1.AND.ISET(ISUB).GE.2.AND.ISET(ISUB).LE.10)
+ & THEN
+ IPU3=MINT(84)+3
+ IPU4=MINT(84)+4
+ IF(ISET(ISUB).EQ.5) IPU4=-3
+ QMAX=VINT(55)
+ IF(ISET(ISUB).EQ.2) QMAX=SQRT(PARP(71))*VINT(55)
+ if(parj(200).eq.1.) then
+ CALL PYSHOWQ(IPU3,IPU4,QMAX)
+
+ else
+ CALL PYSHOW(IPU3,IPU4,QMAX)
+ endif
+ ELSEIF(ISET(ISUB).EQ.11) THEN
+ CALL PYADSH(NFIN)
+ ENDIF
+ PARJ(81)=ALAMSV
+
+C...Allow possibility for user to abort event generation.
+ IVETO=0
+ IF(IPILE.EQ.1.AND.MSTP(143).EQ.1) CALL PYVETO(IVETO)
+ IF(IVETO.EQ.1) GOTO 100
+
+C...Decay of final state resonances.
+ MINT(32)=0
+ IF(MSTP(41).GE.1.AND.ISET(ISUB).LE.10) CALL PYRESD(0)
+ IF(MINT(51).EQ.1) GOTO 100
+ MINT(52)=N
+
+
+C...Multiple interactions - PYTHIA 6.3 intermediate style.
+ 140 IF(MSTP(81).GE.10.AND.MINT(50).EQ.1) THEN
+ IF(ISUB.EQ.95) MINT(31)=MINT(31)+1
+ CALL PYMIGN(6)
+ IF(MINT(51).EQ.1) GOTO 100
+ MINT(53)=N
+
+C...Beam remnant flavour and colour assignments - new scheme.
+ CALL PYMIHK
+ IF(MINT(51).EQ.1.AND.MINT(57).GE.1.AND.MINT(57).LE.5)
+ & GOTO 120
+ IF(MINT(51).EQ.1) GOTO 100
+
+C...Primordial kT and beam remnant momentum sharing - new scheme.
+ CALL PYMIRM
+ IF(MINT(51).EQ.1.AND.MINT(57).GE.1.AND.MINT(57).LE.5)
+ & GOTO 120
+ IF(MINT(51).EQ.1) GOTO 100
+ IF(ISUB.EQ.95) MINT(31)=MINT(31)-1
+
+C...Multiple interactions - PYTHIA 6.2 style.
+ ELSEIF(MINT(111).NE.12) THEN
+ IF (MSTP(81).GE.1.AND.MINT(50).EQ.1.AND.ISUB.NE.95) THEN
+ CALL PYMULT(6)
+ MINT(53)=N
+ ENDIF
+
+C...Hadron remnants and primordial kT.
+ CALL PYREMN(IPU1,IPU2)
+ IF(MINT(51).EQ.1.AND.MINT(57).GE.1.AND.MINT(57).LE.5) GOTO
+ & 110
+ IF(MINT(51).EQ.1) GOTO 100
+ ENDIF
+
+ ELSEIF(ISUB.NE.99) THEN
+C...Diffractive and elastic scattering.
+ CALL PYDIFF
+
+ ELSE
+C...DIS scattering (photon flux external).
+ CALL PYDISG
+ IF(MINT(51).EQ.1) GOTO 100
+ ENDIF
+
+C...Check that no odd resonance left undecayed.
+ MINT(54)=N
+ IF(MSTP(111).GE.1) THEN
+ NFIX=N
+ DO 150 I=MINT(84)+1,NFIX
+ IF(K(I,1).GE.1.AND.K(I,1).LE.10.AND.K(I,2).NE.21.AND.
+ & K(I,2).NE.22) THEN
+ KCA=PYCOMP(K(I,2))
+ IF(MWID(KCA).NE.0.AND.MDCY(KCA,1).GE.1) THEN
+ CALL PYRESD(I)
+ IF(MINT(51).EQ.1) GOTO 100
+ ENDIF
+ ENDIF
+ 150 CONTINUE
+ ENDIF
+
+C...Boost hadronic subsystem to overall rest frame.
+C..(Only relevant when photon inside lepton beam.)
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) CALL PYGAGA(4,WTGAGA)
+
+C...Recalculate energies from momenta and masses (if desired).
+ IF(MSTP(113).GE.1) THEN
+ DO 160 I=MINT(83)+1,N
+ IF(K(I,1).GT.0.AND.K(I,1).LE.10) P(I,4)=SQRT(P(I,1)**2+
+ & P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ 160 CONTINUE
+ NRECAL=N
+ ENDIF
+
+C...Colour reconnection before string formation
+ IF (MSTP(95).GE.2) CALL PYFSCR(MINT(84)+1)
+
+C...Rearrange partons along strings, check invariant mass cuts.
+ MSTU(28)=0
+ IF(MSTP(111).LE.0) MSTJ(14)=-1
+ CALL PYPREP(MINT(84)+1)
+ MSTJ(14)=MSTJ14
+ IF(MINT(51).EQ.1.AND.MSTU(24).EQ.1) THEN
+ MSTU(24)=0
+ GOTO 100
+ ENDIF
+ IF (MINT(51).EQ.1.AND.NPREP.LE.5) GOTO 110
+ IF (MINT(51).EQ.1) GOTO 100
+ IF(MSTP(112).EQ.1.AND.MSTU(28).EQ.3) GOTO 100
+ IF(MSTP(125).EQ.0.OR.MSTP(125).EQ.1) THEN
+ DO 190 I=MINT(84)+1,N
+ IF(K(I,2).EQ.94) THEN
+ DO 180 I1=I+1,MIN(N,I+10)
+ IF(K(I1,3).EQ.I) THEN
+ K(I1,3)=MOD(K(I1,4)/MSTU(5),MSTU(5))
+ IF(K(I1,3).EQ.0) THEN
+ DO 170 II=MINT(84)+1,I-1
+ IF(K(II,2).EQ.K(I1,2)) THEN
+ IF(MOD(K(II,4),MSTU(5)).EQ.I1.OR.
+ & MOD(K(II,5),MSTU(5)).EQ.I1) K(I1,3)=II
+ ENDIF
+ 170 CONTINUE
+ IF(K(I+1,3).EQ.0) K(I+1,3)=K(I,3)
+ ENDIF
+ ENDIF
+ 180 CONTINUE
+ ENDIF
+ 190 CONTINUE
+ CALL PYEDIT(12)
+ CALL PYEDIT(14)
+ IF(MSTP(125).EQ.0) CALL PYEDIT(15)
+ IF(MSTP(125).EQ.0) MINT(4)=0
+ DO 210 I=MINT(83)+1,N
+ IF(K(I,1).EQ.11.AND.K(I,4).EQ.0.AND.K(I,5).EQ.0) THEN
+ DO 200 I1=I+1,N
+ IF(K(I1,3).EQ.I.AND.K(I,4).EQ.0) K(I,4)=I1
+ IF(K(I1,3).EQ.I) K(I,5)=I1
+ 200 CONTINUE
+ ENDIF
+ 210 CONTINUE
+ ENDIF
+
+C...Introduce separators between sections in PYLIST event listing.
+ IF(IPILE.EQ.1.AND.MSTP(125).LE.0) THEN
+ MSTU70=1
+ MSTU(71)=N
+ ELSEIF(IPILE.EQ.1) THEN
+ MSTU70=3
+ MSTU(71)=2
+ MSTU(72)=MINT(4)
+ MSTU(73)=N
+ ENDIF
+
+C...Go back to lab frame (needed for vertices, also in fragmentation).
+ CALL PYFRAM(1)
+
+C...Set nonvanishing production vertex (optional).
+ IF(MSTP(151).EQ.1) THEN
+ DO 220 J=1,4
+ VTX(J)=PARP(150+J)*SQRT(-2D0*LOG(MAX(1D-10,PYR(0))))*
+ & SIN(PARU(2)*PYR(0))
+ 220 CONTINUE
+ DO 240 I=MINT(83)+1,N
+ DO 230 J=1,4
+ V(I,J)=V(I,J)+VTX(J)
+ 230 CONTINUE
+ 240 CONTINUE
+ ENDIF
+
+C...Perform hadronization (if desired).
+ IF(MSTP(111).GE.1) THEN
+ CALL PYEXEC
+ IF(MSTU(24).NE.0) GOTO 100
+ ENDIF
+ IF(MSTP(113).GE.1) THEN
+ DO 250 I=NRECAL,N
+ IF(P(I,5).GT.0D0) P(I,4)=SQRT(P(I,1)**2+
+ & P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ 250 CONTINUE
+ ENDIF
+ IF(MSTP(125).EQ.0.OR.MSTP(125).EQ.1) CALL PYEDIT(14)
+
+C...Store event information and calculate Monte Carlo estimates of
+C...subprocess cross-sections.
+ 260 IF(IPILE.EQ.1) CALL PYDOCU
+
+C...Set counters for current pileup event and loop to next one.
+ MSTI(41)=IPILE
+ IF(IPILE.GE.2.AND.IPILE.LE.10) MSTI(40+IPILE)=ISUB
+ IF(MSTU70.LT.10) THEN
+ MSTU70=MSTU70+1
+ MSTU(70+MSTU70)=N
+ ENDIF
+ MINT(83)=N
+ MINT(84)=N+MSTP(126)
+ IF(IPILE.LT.NPILE) CALL PYFRAM(2)
+ 270 CONTINUE
+
+C...Generic information on pileup events. Reconstruct missing history.
+ IF(MSTP(131).EQ.1.AND.MSTP(133).GE.1) THEN
+ PARI(91)=VINT(132)
+ PARI(92)=VINT(133)
+ PARI(93)=VINT(134)
+ IF(MSTP(133).GE.2) PARI(93)=PARI(93)*XSEC(0,3)/VINT(131)
+ ENDIF
+ CALL PYEDIT(16)
+
+C...Transform to the desired coordinate frame.
+ 280 CALL PYFRAM(MSTP(124))
+ MSTU(70)=MSTU70
+ PARU(21)=VINT(1)
+
+C...Error messages
+ 5100 FORMAT(1X,'Error: no subprocess switched on.'/
+ &1X,'Execution stopped.')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYEVNW
+C...Administers the generation of a high-pT event via calls to
+C...a number of subroutines for the new multiple interactions and
+C...showering framework.
+
+ SUBROUTINE PYEVNW
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ SAVE /PYJETS/,/PYCTAG/,/PYDAT1/,/PYDAT2/,/PYDAT3/,
+ & /PYPARS/,/PYINT1/,/PYINT2/,/PYINT4/,/PYINT5/,/PYINTM/
+C...Local arrays.
+ DIMENSION VTX(4)
+
+C...Stop if no subprocesses on.
+ IF(MINT(121).EQ.1.AND.MSTI(53).EQ.1) THEN
+ WRITE(MSTU(11),5100)
+ CALL PYSTOP(1)
+ ENDIF
+
+C...Initial values for some counters.
+ MSTU(1)=0
+ MSTU(2)=0
+ N=0
+ MINT(5)=MINT(5)+1
+ MINT(7)=0
+ MINT(8)=0
+ MINT(30)=0
+ MINT(83)=0
+ MINT(84)=MSTP(126)
+ MSTU(24)=0
+ MSTU70=0
+ MSTJ14=MSTJ(14)
+C...Normally, use K(I,4:5) colour info rather than /PYCT/.
+ NCT=0
+ MINT(33)=0
+
+C...Let called routines know call is from PYEVNW (not PYEVNT).
+ MINT(35)=3
+
+C...If variable energies: redo incoming kinematics and cross-section.
+ MSTI(61)=0
+ IF(MSTP(171).EQ.1) THEN
+ CALL PYINKI(1)
+ IF(MSTI(61).EQ.1) THEN
+ MINT(5)=MINT(5)-1
+ RETURN
+ ENDIF
+ IF(MINT(121).GT.1) CALL PYSAVE(3,1)
+ CALL PYXTOT
+ ENDIF
+
+C...Loop over number of pileup events; check space left.
+ IF(MSTP(131).LE.0) THEN
+ NPILE=1
+ ELSE
+ CALL PYPILE(2)
+ NPILE=MINT(81)
+ ENDIF
+ DO 300 IPILE=1,NPILE
+ IF(MINT(84)+100.GE.MSTU(4)) THEN
+ CALL PYERRM(11,
+ & '(PYEVNW:) no more space in PYJETS for pileup events')
+ IF(MSTU(21).GE.1) GOTO 310
+ ENDIF
+ MINT(82)=IPILE
+
+C...Generate variables of hard scattering.
+ MINT(51)=0
+ MSTI(52)=0
+ 100 CONTINUE
+ IF(MINT(51).NE.0.OR.MSTU(24).NE.0) MSTI(52)=MSTI(52)+1
+ MINT(31)=0
+ MINT(39)=0
+ MINT(36)=0
+ MINT(51)=0
+ MINT(57)=0
+ CALL PYRAND
+ IF(MSTI(61).EQ.1) THEN
+ MINT(5)=MINT(5)-1
+ RETURN
+ ENDIF
+ IF(MINT(51).EQ.2) RETURN
+ ISUB=MINT(1)
+ IF(MSTP(111).EQ.-1) GOTO 290
+
+C...Loopback point if PYPREP fails, especially for junction topologies.
+ NPREP=0
+ MNT31S=MINT(31)
+ 110 NPREP=NPREP+1
+ MINT(31)=MNT31S
+
+ IF((ISUB.LE.90.OR.ISUB.GE.95).AND.ISUB.NE.99) THEN
+C...Hard scattering (including low-pT):
+C...reconstruct kinematics and colour flow of hard scattering.
+ MINT31=MINT(31)
+ 120 MINT(31)=MINT31
+ MINT(51)=0
+ CALL PYSCAT
+ IF(MINT(51).EQ.1) GOTO 100
+ NPARTD=N
+ NFIN=N
+
+C...Intertwined initial state showers and multiple interactions.
+C...Force no IS showers if no pdfs defined: MSTP(61) -> 0 for PYEVOL.
+C...Force no MI if cross section not known: MSTP(81) -> 0 for PYEVOL.
+ MSTP61=MSTP(61)
+ IF (MINT(47).LT.2) MSTP(61)=0
+ MSTP81=MSTP(81)
+ IF (MINT(50).EQ.0) MSTP(81)=0
+ IF ((MSTP(61).GE.1.OR.MOD(MSTP(81),10).GE.0).AND.
+ & MINT(111).NE.12) THEN
+C...Absolute max pT2 scale for evolution: phase space limit.
+ PT2MXS=0.25D0*VINT(2)
+C...Check if more constrained by ISR and MI max scales:
+ PT2MXS=MIN(PT2MXS,MAX(VINT(56),VINT(62)))
+C...Loopback point in case of failure in evolution.
+ LOOP=0
+ 130 LOOP=LOOP+1
+ MINT(51)=0
+ IF(LOOP.GT.100) THEN
+ CALL PYERRM(9,'(PYEVNW:) failed to evolve shower or '
+ & //'multiple interactions.')
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Pre-initialization of interleaved MI/ISR/JI evolution, only done
+C...once per event. (E.g. compute constants and save variables to be
+C...restored later in case of failure.)
+ IF (LOOP.EQ.1) CALL PYEVOL(-1,DUMMY1,DUMMY2)
+
+C...Initialize interleaved MI/ISR/JI evolution.
+C...PT2MAX: absolute upper limit for evolution - Initialization may
+C... return a PT2MAX which is lower than this.
+C...PT2MIN: absolute lower limit for evolution - Initialization may
+C... return a PT2MIN which is larger than this (e.g. Lambda_QCD).
+ PT2MAX=PT2MXS
+ PT2MIN=0D0
+ CALL PYEVOL(0,PT2MAX,PT2MIN)
+ IF (MINT(51).EQ.1) GOTO 130
+
+C...Perform interleaved MI/ISR/JI evolution from PT2MAX to PT2MIN.
+C...In principle factorized, so can be stopped and restarted.
+C...Example: stop/start at pT=10 GeV. (Commented out for now.)
+C PT2MED=MAX(10D0**2,PT2MIN)
+C CALL PYEVOL(1,PT2MAX,PT2MED)
+C IF (MINT(51).EQ.1) GOTO 160
+C PT2MAX=PT2MED
+ CALL PYEVOL(1,PT2MAX,PT2MIN)
+ IF (MINT(51).EQ.1) GOTO 130
+
+C...Finalize interleaved MI/ISR/JI evolution.
+ CALL PYEVOL(2,PT2MAX,PT2MIN)
+ IF (MINT(51).EQ.1) GOTO 130
+
+ ENDIF
+ MSTP(61)=MSTP61
+ MSTP(81)=MSTP81
+ IF(MINT(51).EQ.1) GOTO 100
+C...(MINT(52) is actually obsolete in this routine. Set anyway
+C...to ensure PYDOCU stable.)
+ MINT(52)=N
+ MINT(53)=N
+
+C...Beam remnants - new scheme.
+ 140 IF(MINT(50).EQ.1) THEN
+ IF (ISUB.EQ.95) MINT(31)=1
+
+C...Beam remnant flavour and colour assignments - new scheme.
+ CALL PYMIHK
+ IF(MINT(51).EQ.1.AND.MINT(57).GE.1.AND.MINT(57).LE.5)
+ & GOTO 120
+ IF(MINT(51).EQ.1) GOTO 100
+
+C...Primordial kT and beam remnant momentum sharing - new scheme.
+ CALL PYMIRM
+ IF(MINT(51).EQ.1.AND.MINT(57).GE.1.AND.MINT(57).LE.5)
+ & GOTO 120
+ IF(MINT(51).EQ.1) GOTO 100
+ IF (ISUB.EQ.95) MINT(31)=0
+ ELSEIF(MINT(111).NE.12) THEN
+C...Hadron remnants and primordial kT - old model.
+C...Happens e.g. for direct photon on one side.
+ IPU1=IMI(1,1,1)
+ IPU2=IMI(2,1,1)
+ CALL PYREMN(IPU1,IPU2)
+ IF(MINT(51).EQ.1.AND.MINT(57).GE.1.AND.MINT(57).LE.5) GOTO
+ & 110
+ IF(MINT(51).EQ.1) GOTO 100
+C...PYREMN does not set colour tags for BRs, so needs to be done now.
+ DO 160 I=MINT(53)+1,N
+ DO 150 KCS=4,5
+ IDA=MOD(K(I,KCS),MSTU(5))
+ IF (IDA.NE.0) THEN
+ MCT(I,KCS-3)=MCT(IDA,6-KCS)
+ ELSE
+ MCT(I,KCS-3)=0
+ ENDIF
+ 150 CONTINUE
+ 160 CONTINUE
+C...Instruct PYPREP to use colour tags
+ MINT(33)=1
+
+ DO 360 MQGST=1,2
+ DO 350 I=MINT(84)+1,N
+
+C...Look for coloured string endpoint, or (later) leftover gluon.
+ IF (K(I,1).NE.3) GOTO 350
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 350
+ KQ=KCHG(KC,2)
+ IF(KQ.EQ.0.OR.(MQGST.EQ.1.AND.KQ.EQ.2)) GOTO 350
+
+C... Pick up loose string end with no previous tag.
+ KCS=4
+ IF(KQ*ISIGN(1,K(I,2)).LT.0) KCS=5
+ IF(MCT(I,KCS-3).NE.0) GOTO 350
+
+ CALL PYCTTR(I,KCS,I)
+ IF(MINT(51).NE.0) RETURN
+
+ 350 CONTINUE
+ 360 CONTINUE
+C...Now delete any colour processing information if set (since partons
+C...otherwise not FS showered!)
+ DO 170 I=MINT(84)+1,N
+ IF (I.LE.N) THEN
+ K(I,4)=MOD(K(I,4),MSTU(5)**2)
+ K(I,5)=MOD(K(I,5),MSTU(5)**2)
+ ENDIF
+ 170 CONTINUE
+ ENDIF
+
+C...Showering of final state partons (optional).
+ ALAMSV=PARJ(81)
+ PARJ(81)=PARP(72)
+ IF(MSTP(71).GE.1.AND.ISET(ISUB).GE.1.AND.ISET(ISUB).LE.10)
+ & THEN
+ QMAX=VINT(55)
+ IF(ISET(ISUB).EQ.2) QMAX=SQRT(PARP(71))*VINT(55)
+ CALL PYPTFS(1,QMAX,0D0,PTGEN)
+C...External processes: handle successive showers.
+ ELSEIF(ISET(ISUB).EQ.11) THEN
+ CALL PYADSH(NFIN)
+ ENDIF
+ PARJ(81)=ALAMSV
+
+C...Allow possibility for user to abort event generation.
+ IVETO=0
+ IF(IPILE.EQ.1.AND.MSTP(143).EQ.1) CALL PYVETO(IVETO) ! sm
+ IF(IVETO.EQ.1) GOTO 100
+
+
+C...Decay of final state resonances.
+ MINT(32)=0
+ IF(MSTP(41).GE.1.AND.ISET(ISUB).LE.10) THEN
+ CALL PYRESD(0)
+ IF(MINT(51).NE.0) GOTO 100
+ ENDIF
+
+ IF(MINT(51).EQ.1) GOTO 100
+
+ ELSEIF(ISUB.NE.99) THEN
+C...Diffractive and elastic scattering.
+ CALL PYDIFF
+
+ ELSE
+C...DIS scattering (photon flux external).
+ CALL PYDISG
+ IF(MINT(51).EQ.1) GOTO 100
+ ENDIF
+
+C...Check that no odd resonance left undecayed.
+ MINT(54)=N
+ IF(MSTP(111).GE.1) THEN
+ NFIX=N
+ DO 180 I=MINT(84)+1,NFIX
+ IF(K(I,1).GE.1.AND.K(I,1).LE.10.AND.K(I,2).NE.21.AND.
+ & K(I,2).NE.22) THEN
+ KCA=PYCOMP(K(I,2))
+ IF(MWID(KCA).NE.0.AND.MDCY(KCA,1).GE.1) THEN
+ CALL PYRESD(I)
+ IF(MINT(51).EQ.1) GOTO 100
+ ENDIF
+ ENDIF
+ 180 CONTINUE
+ ENDIF
+
+C...Boost hadronic subsystem to overall rest frame.
+C..(Only relevant when photon inside lepton beam.)
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) CALL PYGAGA(4,WTGAGA)
+
+C...Recalculate energies from momenta and masses (if desired).
+ IF(MSTP(113).GE.1) THEN
+ DO 190 I=MINT(83)+1,N
+ IF(K(I,1).GT.0.AND.K(I,1).LE.10) P(I,4)=SQRT(P(I,1)**2+
+ & P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ 190 CONTINUE
+ NRECAL=N
+ ENDIF
+
+C...Colour reconnection before string formation
+ CALL PYFSCR(MINT(84)+1)
+
+C...Rearrange partons along strings, check invariant mass cuts.
+ MSTU(28)=0
+ IF(MSTP(111).LE.0) MSTJ(14)=-1
+ CALL PYPREP(MINT(84)+1)
+ MSTJ(14)=MSTJ14
+ IF(MINT(51).EQ.1.AND.MSTU(24).EQ.1) THEN
+ MSTU(24)=0
+ GOTO 100
+ ENDIF
+ IF(MINT(51).EQ.1) GOTO 110
+ IF(MSTP(112).EQ.1.AND.MSTU(28).EQ.3) GOTO 100
+ IF(MSTP(125).EQ.0.OR.MSTP(125).EQ.1) THEN
+ DO 220 I=MINT(84)+1,N
+ IF(K(I,2).EQ.94) THEN
+ DO 210 I1=I+1,MIN(N,I+10)
+ IF(K(I1,3).EQ.I) THEN
+ K(I1,3)=MOD(K(I1,4)/MSTU(5),MSTU(5))
+ IF(K(I1,3).EQ.0) THEN
+ DO 200 II=MINT(84)+1,I-1
+ IF(K(II,2).EQ.K(I1,2)) THEN
+ IF(MOD(K(II,4),MSTU(5)).EQ.I1.OR.
+ & MOD(K(II,5),MSTU(5)).EQ.I1) K(I1,3)=II
+ ENDIF
+ 200 CONTINUE
+ IF(K(I+1,3).EQ.0) K(I+1,3)=K(I,3)
+ ENDIF
+ ENDIF
+ 210 CONTINUE
+ ENDIF
+ 220 CONTINUE
+ CALL PYEDIT(12)
+ CALL PYEDIT(14)
+ IF(MSTP(125).EQ.0) CALL PYEDIT(15)
+ IF(MSTP(125).EQ.0) MINT(4)=0
+ DO 240 I=MINT(83)+1,N
+ IF(K(I,1).EQ.11.AND.K(I,4).EQ.0.AND.K(I,5).EQ.0) THEN
+ DO 230 I1=I+1,N
+ IF(K(I1,3).EQ.I.AND.K(I,4).EQ.0) K(I,4)=I1
+ IF(K(I1,3).EQ.I) K(I,5)=I1
+ 230 CONTINUE
+ ENDIF
+ 240 CONTINUE
+ ENDIF
+
+C...Introduce separators between sections in PYLIST event listing.
+ IF(IPILE.EQ.1.AND.MSTP(125).LE.0) THEN
+ MSTU70=1
+ MSTU(71)=N
+ ELSEIF(IPILE.EQ.1) THEN
+ MSTU70=3
+ MSTU(71)=2
+ MSTU(72)=MINT(4)
+ MSTU(73)=N
+ ENDIF
+
+C...Go back to lab frame (needed for vertices, also in fragmentation).
+ CALL PYFRAM(1)
+
+C...Set nonvanishing production vertex (optional).
+ IF(MSTP(151).EQ.1) THEN
+ DO 250 J=1,4
+ VTX(J)=PARP(150+J)*SQRT(-2D0*LOG(MAX(1D-10,PYR(0))))*
+ & SIN(PARU(2)*PYR(0))
+ 250 CONTINUE
+ DO 270 I=MINT(83)+1,N
+ DO 260 J=1,4
+ V(I,J)=V(I,J)+VTX(J)
+ 260 CONTINUE
+ 270 CONTINUE
+ ENDIF
+
+C...Perform hadronization (if desired).
+ IF(MSTP(111).GE.1) THEN
+ CALL PYEXEC
+ IF(MSTU(24).NE.0) GOTO 100
+ ENDIF
+ IF(MSTP(113).GE.1) THEN
+ DO 280 I=NRECAL,N
+ IF(P(I,5).GT.0D0) P(I,4)=SQRT(P(I,1)**2+
+ & P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ 280 CONTINUE
+ ENDIF
+ IF(MSTP(125).EQ.0.OR.MSTP(125).EQ.1) CALL PYEDIT(14)
+
+C...Store event information and calculate Monte Carlo estimates of
+C...subprocess cross-sections.
+ 290 IF(IPILE.EQ.1) CALL PYDOCU
+
+C...Set counters for current pileup event and loop to next one.
+ MSTI(41)=IPILE
+ IF(IPILE.GE.2.AND.IPILE.LE.10) MSTI(40+IPILE)=ISUB
+ IF(MSTU70.LT.10) THEN
+ MSTU70=MSTU70+1
+ MSTU(70+MSTU70)=N
+ ENDIF
+ MINT(83)=N
+ MINT(84)=N+MSTP(126)
+ IF(IPILE.LT.NPILE) CALL PYFRAM(2)
+ 300 CONTINUE
+
+C...Generic information on pileup events. Reconstruct missing history.
+ IF(MSTP(131).EQ.1.AND.MSTP(133).GE.1) THEN
+ PARI(91)=VINT(132)
+ PARI(92)=VINT(133)
+ PARI(93)=VINT(134)
+ IF(MSTP(133).GE.2) PARI(93)=PARI(93)*XSEC(0,3)/VINT(131)
+ ENDIF
+ CALL PYEDIT(16)
+
+C...Transform to the desired coordinate frame.
+ 310 CALL PYFRAM(MSTP(124))
+ MSTU(70)=MSTU70
+ PARU(21)=VINT(1)
+
+C...Error messages
+ 5100 FORMAT(1X,'Error: no subprocess switched on.'/
+ &1X,'Execution stopped.')
+
+ RETURN
+ END
+
+
+C***********************************************************************
+
+C...PYSTAT
+C...Prints out information about cross-sections, decay widths, branching
+C...ratios, kinematical limits, status codes and parameter values.
+
+ SUBROUTINE PYSTAT(MSTAT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+ PARAMETER (EPS=1D-3)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT6/PROC(0:500)
+ CHARACTER PROC*28, CHTMP*16
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT2/,/PYINT4/,/PYINT5/,/PYINT6/,/PYMSSM/,/PYMSRV/
+C...Local arrays, character variables and data.
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5),NMODES(0:20),PBRAT(10)
+ CHARACTER PROGA(6)*28,CHAU*16,CHKF*16,CHD1*16,CHD2*16,CHD3*16,
+ &CHIN(2)*12,STATE(-1:5)*4,CHKIN(21)*18,DISGA(2)*28,
+ &PROGG9(13)*28,PROGG4(4)*28,PROGG2(2)*28,PROGP4(4)*28
+ CHARACTER*24 CHD0, CHDC(10)
+ CHARACTER*6 DNAME(3)
+ DATA PROGA/
+ &'VMD/hadron * VMD ','VMD/hadron * direct ',
+ &'VMD/hadron * anomalous ','direct * direct ',
+ &'direct * anomalous ','anomalous * anomalous '/
+ DATA DISGA/'e * VMD','e * anomalous'/
+ DATA PROGG9/
+ &'direct * direct ','direct * VMD ',
+ &'direct * anomalous ','VMD * direct ',
+ &'VMD * VMD ','VMD * anomalous ',
+ &'anomalous * direct ','anomalous * VMD ',
+ &'anomalous * anomalous ','DIS * VMD ',
+ &'DIS * anomalous ','VMD * DIS ',
+ &'anomalous * DIS '/
+ DATA PROGG4/
+ &'direct * direct ','direct * resolved ',
+ &'resolved * direct ','resolved * resolved '/
+ DATA PROGG2/
+ &'direct * hadron ','resolved * hadron '/
+ DATA PROGP4/
+ &'VMD * hadron ','direct * hadron ',
+ &'anomalous * hadron ','DIS * hadron '/
+ DATA STATE/'----','off ','on ','on/+','on/-','on/1','on/2'/,
+ &CHKIN/' m_hard (GeV/c^2) ',' p_T_hard (GeV/c) ',
+ &'m_finite (GeV/c^2)',' y*_subsystem ',' y*_large ',
+ &' y*_small ',' eta*_large ',' eta*_small ',
+ &'cos(theta*)_large ','cos(theta*)_small ',' x_1 ',
+ &' x_2 ',' x_F ',' cos(theta_hard) ',
+ &'m''_hard (GeV/c^2) ',' tau ',' y* ',
+ &'cos(theta_hard^-) ','cos(theta_hard^+) ',' x_T^2 ',
+ &' tau'' '/
+ DATA DNAME /'q ','lepton','nu '/
+
+C...Cross-sections.
+ IF(MSTAT.LE.1) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(5,0)
+ WRITE(MSTU(11),5000)
+ WRITE(MSTU(11),5100)
+ WRITE(MSTU(11),5200) 0,PROC(0),NGEN(0,3),NGEN(0,1),XSEC(0,3)
+ DO 100 I=1,500
+ IF(MSUB(I).NE.1) GOTO 100
+ WRITE(MSTU(11),5200) I,PROC(I),NGEN(I,3),NGEN(I,1),XSEC(I,3)
+ 100 CONTINUE
+ IF(MINT(121).GT.1) THEN
+ WRITE(MSTU(11),5300)
+ DO 110 IGA=1,MINT(121)
+ CALL PYSAVE(3,IGA)
+ IF(MINT(121).EQ.2.AND.MSTP(14).EQ.10) THEN
+ WRITE(MSTU(11),5200) IGA,DISGA(IGA),NGEN(0,3),NGEN(0,1),
+ & XSEC(0,3)
+ ELSEIF(MINT(121).EQ.9.OR.MINT(121).EQ.13) THEN
+ WRITE(MSTU(11),5200) IGA,PROGG9(IGA),NGEN(0,3),NGEN(0,1),
+ & XSEC(0,3)
+ ELSEIF(MINT(121).EQ.4.AND.MSTP(14).EQ.30) THEN
+ WRITE(MSTU(11),5200) IGA,PROGP4(IGA),NGEN(0,3),NGEN(0,1),
+ & XSEC(0,3)
+ ELSEIF(MINT(121).EQ.4) THEN
+ WRITE(MSTU(11),5200) IGA,PROGG4(IGA),NGEN(0,3),NGEN(0,1),
+ & XSEC(0,3)
+ ELSEIF(MINT(121).EQ.2) THEN
+ WRITE(MSTU(11),5200) IGA,PROGG2(IGA),NGEN(0,3),NGEN(0,1),
+ & XSEC(0,3)
+ ELSE
+ WRITE(MSTU(11),5200) IGA,PROGA(IGA),NGEN(0,3),NGEN(0,1),
+ & XSEC(0,3)
+ ENDIF
+ 110 CONTINUE
+ CALL PYSAVE(5,0)
+ ENDIF
+ WRITE(MSTU(11),5400) MSTU(23),MSTU(30),MSTU(27),
+ & 1D0-DBLE(NGEN(0,3))/MAX(1D0,DBLE(NGEN(0,2)))
+
+C...Decay widths and branching ratios.
+ ELSEIF(MSTAT.EQ.2) THEN
+ WRITE(MSTU(11),5500)
+ WRITE(MSTU(11),5600)
+ DO 140 KC=1,500
+ KF=KCHG(KC,4)
+ CALL PYNAME(KF,CHKF)
+ IOFF=0
+ IF(KC.LE.22) THEN
+ IF(KC.GT.2*MSTP(1).AND.KC.LE.10) GOTO 140
+ IF(KC.GT.10+2*MSTP(1).AND.KC.LE.20) GOTO 140
+ IF(KC.LE.5.OR.(KC.GE.11.AND.KC.LE.16)) IOFF=1
+ IF(KC.EQ.18.AND.PMAS(18,1).LT.1D0) IOFF=1
+ IF(KC.EQ.21.OR.KC.EQ.22) IOFF=1
+ ELSE
+ IF(MWID(KC).LE.0) GOTO 140
+ IF(IMSS(1).LE.0.AND.(KF/KSUSY1.EQ.1.OR.
+ & KF/KSUSY1.EQ.2)) GOTO 140
+ ENDIF
+C...Off-shell branchings.
+ IF(IOFF.EQ.1) THEN
+ NGP=0
+ IF(KC.LE.20) NGP=(MOD(KC,10)+1)/2
+ IF(NGP.LE.MSTP(1)) WRITE(MSTU(11),5700) KF,CHKF(1:10),
+ & PMAS(KC,1),0D0,0D0,STATE(MDCY(KC,1)),0D0
+ DO 120 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ NGP1=0
+ IF(IABS(KFDP(IDC,1)).LE.20) NGP1=
+ & (MOD(IABS(KFDP(IDC,1)),10)+1)/2
+ NGP2=0
+ IF(IABS(KFDP(IDC,2)).LE.20) NGP2=
+ & (MOD(IABS(KFDP(IDC,2)),10)+1)/2
+ CALL PYNAME(KFDP(IDC,1),CHD1)
+ CALL PYNAME(KFDP(IDC,2),CHD2)
+ IF(KFDP(IDC,3).EQ.0) THEN
+ IF(MDME(IDC,2).EQ.102.AND.NGP1.LE.MSTP(1).AND.
+ & NGP2.LE.MSTP(1)) WRITE(MSTU(11),5800) IDC,CHD1(1:10),
+ & CHD2(1:10),0D0,0D0,STATE(MDME(IDC,1)),0D0
+ ELSE
+ CALL PYNAME(KFDP(IDC,3),CHD3)
+ IF(MDME(IDC,2).EQ.102.AND.NGP1.LE.MSTP(1).AND.
+ & NGP2.LE.MSTP(1)) WRITE(MSTU(11),5900) IDC,CHD1(1:10),
+ & CHD2(1:10),CHD3(1:10),0D0,0D0,STATE(MDME(IDC,1)),0D0
+ ENDIF
+ 120 CONTINUE
+C...On-shell decays.
+ ELSE
+ CALL PYWIDT(KF,PMAS(KC,1)**2,WDTP,WDTE)
+ BRFIN=1D0
+ IF(WDTE(0,0).LE.0D0) BRFIN=0D0
+ WRITE(MSTU(11),5700) KF,CHKF(1:10),PMAS(KC,1),WDTP(0),1D0,
+ & STATE(MDCY(KC,1)),BRFIN
+ DO 130 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ NGP1=0
+ IF(IABS(KFDP(IDC,1)).LE.20) NGP1=
+ & (MOD(IABS(KFDP(IDC,1)),10)+1)/2
+ NGP2=0
+ IF(IABS(KFDP(IDC,2)).LE.20) NGP2=
+ & (MOD(IABS(KFDP(IDC,2)),10)+1)/2
+ BRPRI=0D0
+ IF(WDTP(0).GT.0D0) BRPRI=WDTP(J)/WDTP(0)
+ BRFIN=0D0
+ IF(WDTE(0,0).GT.0D0) BRFIN=WDTE(J,0)/WDTE(0,0)
+ CALL PYNAME(KFDP(IDC,1),CHD1)
+ CALL PYNAME(KFDP(IDC,2),CHD2)
+ IF(KFDP(IDC,3).EQ.0) THEN
+ IF(NGP1.LE.MSTP(1).AND.NGP2.LE.MSTP(1))
+ & WRITE(MSTU(11),5800) IDC,CHD1(1:10),
+ & CHD2(1:10),WDTP(J),BRPRI,
+ & STATE(MDME(IDC,1)),BRFIN
+ ELSE
+ CALL PYNAME(KFDP(IDC,3),CHD3)
+ IF(NGP1.LE.MSTP(1).AND.NGP2.LE.MSTP(1))
+ & WRITE(MSTU(11),5900) IDC,CHD1(1:10),
+ & CHD2(1:10),CHD3(1:10),WDTP(J),BRPRI,
+ & STATE(MDME(IDC,1)),BRFIN
+ ENDIF
+ 130 CONTINUE
+ ENDIF
+ 140 CONTINUE
+ WRITE(MSTU(11),6000)
+
+C...Allowed incoming partons/particles at hard interaction.
+ ELSEIF(MSTAT.EQ.3) THEN
+ WRITE(MSTU(11),6100)
+ CALL PYNAME(MINT(11),CHAU)
+ CHIN(1)=CHAU(1:12)
+ CALL PYNAME(MINT(12),CHAU)
+ CHIN(2)=CHAU(1:12)
+ WRITE(MSTU(11),6200) CHIN(1),CHIN(2)
+ DO 150 I=-20,22
+ IF(I.EQ.0) GOTO 150
+ IA=IABS(I)
+ IF(IA.GT.MSTP(58).AND.IA.LE.10) GOTO 150
+ IF(IA.GT.10+2*MSTP(1).AND.IA.LE.20) GOTO 150
+ CALL PYNAME(I,CHAU)
+ WRITE(MSTU(11),6300) CHAU,STATE(KFIN(1,I)),CHAU,
+ & STATE(KFIN(2,I))
+ 150 CONTINUE
+ WRITE(MSTU(11),6400)
+
+C...User-defined limits on kinematical variables.
+ ELSEIF(MSTAT.EQ.4) THEN
+ WRITE(MSTU(11),6500)
+ WRITE(MSTU(11),6600)
+ SHRMAX=CKIN(2)
+ IF(SHRMAX.LT.0D0) SHRMAX=VINT(1)
+ WRITE(MSTU(11),6700) CKIN(1),CHKIN(1),SHRMAX
+ PTHMIN=MAX(CKIN(3),CKIN(5))
+ PTHMAX=CKIN(4)
+ IF(PTHMAX.LT.0D0) PTHMAX=0.5D0*SHRMAX
+ WRITE(MSTU(11),6800) CKIN(3),PTHMIN,CHKIN(2),PTHMAX
+ WRITE(MSTU(11),6900) CHKIN(3),CKIN(6)
+ DO 160 I=4,14
+ WRITE(MSTU(11),6700) CKIN(2*I-1),CHKIN(I),CKIN(2*I)
+ 160 CONTINUE
+ SPRMAX=CKIN(32)
+ IF(SPRMAX.LT.0D0) SPRMAX=VINT(1)
+ WRITE(MSTU(11),6700) CKIN(31),CHKIN(15),SPRMAX
+ WRITE(MSTU(11),7000)
+
+C...Status codes and parameter values.
+ ELSEIF(MSTAT.EQ.5) THEN
+ WRITE(MSTU(11),7100)
+ WRITE(MSTU(11),7200)
+ DO 170 I=1,100
+ WRITE(MSTU(11),7300) I,MSTP(I),PARP(I),100+I,MSTP(100+I),
+ & PARP(100+I)
+ 170 CONTINUE
+
+C...List of all processes implemented in the program.
+ ELSEIF(MSTAT.EQ.6) THEN
+ WRITE(MSTU(11),7400)
+ WRITE(MSTU(11),7500)
+ DO 180 I=1,500
+ IF(ISET(I).LT.0) GOTO 180
+ WRITE(MSTU(11),7600) I,PROC(I),ISET(I),KFPR(I,1),KFPR(I,2)
+ 180 CONTINUE
+ WRITE(MSTU(11),7700)
+
+ ELSEIF(MSTAT.EQ.7) THEN
+ WRITE (MSTU(11),8000)
+ NMODES(0)=0
+ NMODES(10)=0
+ NMODES(9)=0
+ DO 290 ILR=1,2
+ DO 280 KFSM=1,16
+ KFSUSY=ILR*KSUSY1+KFSM
+ NRVDC=0
+C...SDOWN DECAYS
+ IF (KFSM.EQ.1.OR.KFSM.EQ.3.OR.KFSM.EQ.5) THEN
+ NRVDC=3
+ DO 190 I=1,NRVDC
+ PBRAT(I)=0D0
+ NMODES(I)=0
+ 190 CONTINUE
+ CALL PYNAME(KFSUSY,CHTMP)
+ CHD0=CHTMP//' '
+ CHDC(1)=DNAME(3) // ' + ' // DNAME(1)
+ CHDC(2)=DNAME(2) // ' + ' // DNAME(1)
+ CHDC(3)=DNAME(1) // ' + ' // DNAME(1)
+ KC=PYCOMP(KFSUSY)
+ DO 200 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ ID1=IABS(KFDP(IDC,1))
+ ID2=IABS(KFDP(IDC,2))
+ IF (KFDP(IDC,3).EQ.0) THEN
+ IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND.(ID2
+ & .EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND
+ & .(ID2.EQ.2.OR.ID2.EQ.4.OR.ID2.EQ.6)) THEN
+ PBRAT(2)=PBRAT(2)+BRAT(IDC)
+ NMODES(2)=NMODES(2)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.2.OR.ID1.EQ.4.OR.ID1.EQ.6).AND
+ & .(ID2.EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5)) THEN
+ PBRAT(3)=PBRAT(3)+BRAT(IDC)
+ NMODES(3)=NMODES(3)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ ENDIF
+ 200 CONTINUE
+ ENDIF
+C...SUP DECAYS
+ IF (KFSM.EQ.2.OR.KFSM.EQ.4.OR.KFSM.EQ.6) THEN
+ NRVDC=2
+ DO 210 I=1,NRVDC
+ NMODES(I)=0
+ PBRAT(I)=0D0
+ 210 CONTINUE
+ CALL PYNAME(KFSUSY,CHTMP)
+ CHD0=CHTMP//' '
+ CHDC(1)=DNAME(2) // ' + ' // DNAME(1)
+ CHDC(2)=DNAME(1) // ' + ' // DNAME(1)
+ KC=PYCOMP(KFSUSY)
+ DO 220 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ ID1=IABS(KFDP(IDC,1))
+ ID2=IABS(KFDP(IDC,2))
+ IF (KFDP(IDC,3).EQ.0) THEN
+ IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND.(ID2
+ & .EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.1.OR.ID1.EQ.3.OR.ID1.EQ.5).AND.(ID2
+ & .EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5)) THEN
+ PBRAT(2)=PBRAT(2)+BRAT(IDC)
+ NMODES(2)=NMODES(2)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ ENDIF
+ 220 CONTINUE
+ ENDIF
+C...SLEPTON DECAYS
+ IF (KFSM.EQ.11.OR.KFSM.EQ.13.OR.KFSM.EQ.15) THEN
+ NRVDC=2
+ DO 230 I=1,NRVDC
+ PBRAT(I)=0D0
+ NMODES(I)=0
+ 230 CONTINUE
+ CALL PYNAME(KFSUSY,CHTMP)
+ CHD0=CHTMP//' '
+ CHDC(1)=DNAME(3) // ' + ' // DNAME(2)
+ CHDC(2)=DNAME(1) // ' + ' // DNAME(1)
+ KC=PYCOMP(KFSUSY)
+ DO 240 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ ID1=IABS(KFDP(IDC,1))
+ ID2=IABS(KFDP(IDC,2))
+ IF (KFDP(IDC,3).EQ.0) THEN
+ IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND.(ID2
+ & .EQ.11.OR.ID2.EQ.13.OR.ID2.EQ.15)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ IF ((ID1.EQ.2.OR.ID1.EQ.4.OR.ID1.EQ.6).AND.(ID2
+ & .EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5)) THEN
+ PBRAT(2)=PBRAT(2)+BRAT(IDC)
+ NMODES(2)=NMODES(2)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ ENDIF
+ 240 CONTINUE
+ ENDIF
+C...SNEUTRINO DECAYS
+ IF ((KFSM.EQ.12.OR.KFSM.EQ.14.OR.KFSM.EQ.16).AND.ILR.EQ.1)
+ & THEN
+ NRVDC=2
+ DO 250 I=1,NRVDC
+ PBRAT(I)=0D0
+ NMODES(I)=0
+ 250 CONTINUE
+ CALL PYNAME(KFSUSY,CHTMP)
+ CHD0=CHTMP//' '
+ CHDC(1)=DNAME(2) // ' + ' // DNAME(2)
+ CHDC(2)=DNAME(1) // ' + ' // DNAME(1)
+ KC=PYCOMP(KFSUSY)
+ DO 260 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ ID1=IABS(KFDP(IDC,1))
+ ID2=IABS(KFDP(IDC,2))
+ IF (KFDP(IDC,3).EQ.0) THEN
+ IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND.(ID2
+ & .EQ.11.OR.ID2.EQ.13.OR.ID2.EQ.15)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ IF ((ID1.EQ.1.OR.ID1.EQ.3.OR.ID1.EQ.5).AND.(ID2
+ & .EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5)) THEN
+ NMODES(2)=NMODES(2)+1
+ PBRAT(2)=PBRAT(2)+BRAT(IDC)
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ ENDIF
+ 260 CONTINUE
+ ENDIF
+ IF (NRVDC.NE.0) THEN
+ DO 270 I=1,NRVDC
+ WRITE (MSTU(11),8200) CHD0, CHDC(I), PBRAT(I), NMODES(I)
+ NMODES(0)=NMODES(0)+NMODES(I)
+ 270 CONTINUE
+ ENDIF
+ 280 CONTINUE
+ 290 CONTINUE
+ DO 370 KFSM=21,37
+ KFSUSY=KSUSY1+KFSM
+ NRVDC=0
+C...NEUTRALINO DECAYS
+ IF (KFSM.EQ.22.OR.KFSM.EQ.23.OR.KFSM.EQ.25.OR.KFSM.EQ.35) THEN
+ NRVDC=4
+ DO 300 I=1,NRVDC
+ PBRAT(I)=0D0
+ NMODES(I)=0
+ 300 CONTINUE
+ CALL PYNAME(KFSUSY,CHTMP)
+ CHD0=CHTMP//' '
+ CHDC(1)=DNAME(3) // ' + ' // DNAME(2) // ' + ' // DNAME(2)
+ CHDC(2)=DNAME(3) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ CHDC(3)=DNAME(2) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ CHDC(4)=DNAME(1) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ KC=PYCOMP(KFSUSY)
+ DO 310 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ ID1=IABS(KFDP(IDC,1))
+ ID2=IABS(KFDP(IDC,2))
+ ID3=IABS(KFDP(IDC,3))
+ IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND.(ID2
+ & .EQ.11.OR.ID2.EQ.13.OR.ID2.EQ.15).AND.(ID3.EQ.11.OR
+ & .ID3.EQ.13.OR.ID3.EQ.15)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND
+ & .(ID2.EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5).AND.(ID3.EQ.1
+ & .OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(2)=PBRAT(2)+BRAT(IDC)
+ NMODES(2)=NMODES(2)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND
+ & .(ID2.EQ.2.OR.ID2.EQ.4.OR.ID2.EQ.6).AND.(ID3.EQ.1
+ & .OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(3)=PBRAT(3)+BRAT(IDC)
+ NMODES(3)=NMODES(3)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.2.OR.ID1.EQ.4.OR.ID1.EQ.6).AND
+ & .(ID2.EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5).AND.(ID3.EQ.1
+ & .OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(4)=PBRAT(4)+BRAT(IDC)
+ NMODES(4)=NMODES(4)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ 310 CONTINUE
+ ENDIF
+C...CHARGINO DECAYS
+ IF (KFSM.EQ.24.OR.KFSM.EQ.37) THEN
+ NRVDC=5
+ DO 320 I=1,NRVDC
+ PBRAT(I)=0D0
+ NMODES(I)=0
+ 320 CONTINUE
+ CALL PYNAME(KFSUSY,CHTMP)
+ CHD0=CHTMP//' '
+ CHDC(1)=DNAME(3) // ' + ' // DNAME(3) // ' + ' // DNAME(2)
+ CHDC(2)=DNAME(2) // ' + ' // DNAME(2) // ' + ' // DNAME(2)
+ CHDC(3)=DNAME(3) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ CHDC(4)=DNAME(2) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ CHDC(5)=DNAME(1) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ KC=PYCOMP(KFSUSY)
+ DO 330 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ ID1=IABS(KFDP(IDC,1))
+ ID2=IABS(KFDP(IDC,2))
+ ID3=IABS(KFDP(IDC,3))
+ IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND.(ID2
+ & .EQ.11.OR.ID2.EQ.13.OR.ID2.EQ.15).AND.(ID3.EQ.12.OR
+ & .ID3.EQ.14.OR.ID3.EQ.16)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND
+ & .(ID2.EQ.12.OR.ID2.EQ.14.OR.ID2.EQ.16).AND.(ID3.EQ
+ & .11.OR.ID3.EQ.13.OR.ID3.EQ.15)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND
+ & .(ID2.EQ.11.OR.ID2.EQ.13.OR.ID2.EQ.15).AND.(ID3.EQ
+ & .11.OR.ID3.EQ.13.OR.ID3.EQ.15)) THEN
+ PBRAT(2)=PBRAT(2)+BRAT(IDC)
+ NMODES(2)=NMODES(2)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND
+ & .(ID2.EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5).AND.(ID3.EQ
+ & .2.OR.ID3.EQ.4.OR.ID3.EQ.6)) THEN
+ PBRAT(3)=PBRAT(3)+BRAT(IDC)
+ NMODES(3)=NMODES(3)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND
+ & .(ID2.EQ.2.OR.ID2.EQ.4.OR.ID2.EQ.6).AND.(ID3.EQ
+ & .1.OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(3)=PBRAT(3)+BRAT(IDC)
+ NMODES(3)=NMODES(3)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND
+ & .(ID2.EQ.2.OR.ID2.EQ.4.OR.ID2.EQ.6).AND.(ID3.EQ
+ & .2.OR.ID3.EQ.4.OR.ID3.EQ.6)) THEN
+ PBRAT(4)=PBRAT(4)+BRAT(IDC)
+ NMODES(4)=NMODES(4)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND
+ & .(ID2.EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5).AND.(ID3.EQ
+ & .1.OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(4)=PBRAT(4)+BRAT(IDC)
+ NMODES(4)=NMODES(4)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.2.OR.ID1.EQ.4.OR.ID1.EQ.6).AND
+ & .(ID2.EQ.2.OR.ID2.EQ.4.OR.ID2.EQ.6).AND.(ID3.EQ
+ & .1.OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(5)=PBRAT(5)+BRAT(IDC)
+ NMODES(5)=NMODES(5)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.1.OR.ID1.EQ.3.OR.ID1.EQ.5).AND
+ & .(ID2.EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5).AND.(ID3.EQ
+ & .1.OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(5)=PBRAT(5)+BRAT(IDC)
+ NMODES(5)=NMODES(5)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ 330 CONTINUE
+ ENDIF
+C...GLUINO DECAYS
+ IF (KFSM.EQ.21) THEN
+ NRVDC=3
+ DO 340 I=1,NRVDC
+ PBRAT(I)=0D0
+ NMODES(I)=0
+ 340 CONTINUE
+ CALL PYNAME(KFSUSY,CHTMP)
+ CHD0=CHTMP//' '
+ CHDC(1)=DNAME(3) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ CHDC(2)=DNAME(2) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ CHDC(3)=DNAME(1) // ' + ' // DNAME(1) // ' + ' // DNAME(1)
+ KC=PYCOMP(KFSUSY)
+ DO 350 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ ID1=IABS(KFDP(IDC,1))
+ ID2=IABS(KFDP(IDC,2))
+ ID3=IABS(KFDP(IDC,3))
+ IF ((ID1.EQ.12.OR.ID1.EQ.14.OR.ID1.EQ.16).AND.(ID2
+ & .EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5).AND.(ID3.EQ.1.OR
+ & .ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(1)=PBRAT(1)+BRAT(IDC)
+ NMODES(1)=NMODES(1)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.11.OR.ID1.EQ.13.OR.ID1.EQ.15).AND
+ & .(ID2.EQ.2.OR.ID2.EQ.4.OR.ID2.EQ.6).AND.(ID3.EQ.1
+ & .OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(2)=PBRAT(2)+BRAT(IDC)
+ NMODES(2)=NMODES(2)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ELSE IF ((ID1.EQ.2.OR.ID1.EQ.4.OR.ID1.EQ.6).AND
+ & .(ID2.EQ.1.OR.ID2.EQ.3.OR.ID2.EQ.5).AND.(ID3.EQ.1
+ & .OR.ID3.EQ.3.OR.ID3.EQ.5)) THEN
+ PBRAT(3)=PBRAT(3)+BRAT(IDC)
+ NMODES(3)=NMODES(3)+1
+ IF (BRAT(IDC).GT.0D0) NMODES(10)=NMODES(10)+1
+ IF (BRAT(IDC).GT.EPS) NMODES(9)=NMODES(9)+1
+ ENDIF
+ 350 CONTINUE
+ ENDIF
+
+ IF (NRVDC.NE.0) THEN
+ DO 360 I=1,NRVDC
+ WRITE (MSTU(11),8200) CHD0, CHDC(I), PBRAT(I), NMODES(I)
+ NMODES(0)=NMODES(0)+NMODES(I)
+ 360 CONTINUE
+ ENDIF
+ 370 CONTINUE
+ WRITE (MSTU(11),8100) NMODES(0), NMODES(10), NMODES(9)
+
+ IF (IMSS(51).GE.1.OR.IMSS(52).GE.1.OR.IMSS(53).GE.1) THEN
+ WRITE (MSTU(11),8500)
+ DO 400 IRV=1,3
+ DO 390 JRV=1,3
+ DO 380 KRV=1,3
+ WRITE (MSTU(11),8700) IRV,JRV,KRV,RVLAM(IRV,JRV,KRV)
+ & ,RVLAMP(IRV,JRV,KRV),RVLAMB(IRV,JRV,KRV)
+ 380 CONTINUE
+ 390 CONTINUE
+ 400 CONTINUE
+ WRITE (MSTU(11),8600)
+ ENDIF
+ ENDIF
+
+C...Formats for printouts.
+ 5000 FORMAT('1',9('*'),1X,'PYSTAT: Statistics on Number of ',
+ &'Events and Cross-sections',1X,9('*'))
+ 5100 FORMAT(/1X,78('=')/1X,'I',34X,'I',28X,'I',12X,'I'/1X,'I',12X,
+ &'Subprocess',12X,'I',6X,'Number of points',6X,'I',4X,'Sigma',3X,
+ &'I'/1X,'I',34X,'I',28X,'I',12X,'I'/1X,'I',34('-'),'I',28('-'),
+ &'I',4X,'(mb)',4X,'I'/1X,'I',34X,'I',28X,'I',12X,'I'/1X,'I',1X,
+ &'N:o',1X,'Type',25X,'I',4X,'Generated',9X,'Tried',1X,'I',12X,
+ &'I'/1X,'I',34X,'I',28X,'I',12X,'I'/1X,78('=')/1X,'I',34X,'I',28X,
+ &'I',12X,'I')
+ 5200 FORMAT(1X,'I',1X,I3,1X,A28,1X,'I',1X,I12,1X,I13,1X,'I',1X,1P,
+ &D10.3,1X,'I')
+ 5300 FORMAT(1X,'I',34X,'I',28X,'I',12X,'I'/1X,78('=')/
+ &1X,'I',34X,'I',28X,'I',12X,'I')
+ 5400 FORMAT(1X,'I',34X,'I',28X,'I',12X,'I'/1X,78('=')//
+ &1X,'********* Total number of errors, excluding junctions =',
+ &1X,I8,' *************'/
+ &1X,'********* Total number of errors, including junctions =',
+ &1X,I8,' *************'/
+ &1X,'********* Total number of warnings = ',
+ &1X,I8,' *************'/
+ &1X,'********* Fraction of events that fail fragmentation ',
+ &'cuts =',1X,F8.5,' *********'/)
+ 5500 FORMAT('1',27('*'),1X,'PYSTAT: Decay Widths and Branching ',
+ &'Ratios',1X,27('*'))
+ 5600 FORMAT(/1X,98('=')/1X,'I',49X,'I',13X,'I',12X,'I',6X,'I',12X,'I'/
+ &1X,'I',5X,'Mother --> Branching/Decay Channel',8X,'I',1X,
+ &'Width (GeV)',1X,'I',7X,'B.R.',1X,'I',1X,'Stat',1X,'I',2X,
+ &'Eff. B.R.',1X,'I'/1X,'I',49X,'I',13X,'I',12X,'I',6X,'I',12X,'I'/
+ &1X,98('='))
+ 5700 FORMAT(1X,'I',49X,'I',13X,'I',12X,'I',6X,'I',12X,'I'/1X,'I',1X,
+ &I8,2X,A10,3X,'(m =',F10.3,')',2X,'-->',5X,'I',2X,1P,D10.3,0P,1X,
+ &'I',1X,1P,D10.3,0P,1X,'I',1X,A4,1X,'I',1X,1P,D10.3,0P,1X,'I')
+ 5800 FORMAT(1X,'I',1X,I8,2X,A10,1X,'+',1X,A10,15X,'I',2X,
+ &1P,D10.3,0P,1X,'I',1X,1P,D10.3,0P,1X,'I',1X,A4,1X,'I',1X,
+ &1P,D10.3,0P,1X,'I')
+ 5900 FORMAT(1X,'I',1X,I8,2X,A10,1X,'+',1X,A10,1X,'+',1X,A10,2X,'I',2X,
+ &1P,D10.3,0P,1X,'I',1X,1P,D10.3,0P,1X,'I',1X,A4,1X,'I',1X,
+ &1P,D10.3,0P,1X,'I')
+ 6000 FORMAT(1X,'I',49X,'I',13X,'I',12X,'I',6X,'I',12X,'I'/1X,98('='))
+ 6100 FORMAT('1',7('*'),1X,'PYSTAT: Allowed Incoming Partons/',
+ &'Particles at Hard Interaction',1X,7('*'))
+ 6200 FORMAT(/1X,78('=')/1X,'I',38X,'I',37X,'I'/1X,'I',1X,
+ &'Beam particle:',1X,A12,10X,'I',1X,'Target particle:',1X,A12,7X,
+ &'I'/1X,'I',38X,'I',37X,'I'/1X,'I',1X,'Content',6X,'State',19X,
+ &'I',1X,'Content',6X,'State',18X,'I'/1X,'I',38X,'I',37X,'I'/1X,
+ &78('=')/1X,'I',38X,'I',37X,'I')
+ 6300 FORMAT(1X,'I',1X,A9,5X,A4,19X,'I',1X,A9,5X,A4,18X,'I')
+ 6400 FORMAT(1X,'I',38X,'I',37X,'I'/1X,78('='))
+ 6500 FORMAT('1',12('*'),1X,'PYSTAT: User-Defined Limits on ',
+ &'Kinematical Variables',1X,12('*'))
+ 6600 FORMAT(/1X,78('=')/1X,'I',76X,'I')
+ 6700 FORMAT(1X,'I',16X,1P,D10.3,0P,1X,'<',1X,A,1X,'<',1X,1P,D10.3,0P,
+ &16X,'I')
+ 6800 FORMAT(1X,'I',3X,1P,D10.3,0P,1X,'(',1P,D10.3,0P,')',1X,'<',1X,A,
+ &1X,'<',1X,1P,D10.3,0P,16X,'I')
+ 6900 FORMAT(1X,'I',29X,A,1X,'=',1X,1P,D10.3,0P,16X,'I')
+ 7000 FORMAT(1X,'I',76X,'I'/1X,78('='))
+ 7100 FORMAT('1',12('*'),1X,'PYSTAT: Summary of Status Codes and ',
+ &'Parameter Values',1X,12('*'))
+ 7200 FORMAT(/3X,'I',4X,'MSTP(I)',9X,'PARP(I)',20X,'I',4X,'MSTP(I)',9X,
+ &'PARP(I)'/)
+ 7300 FORMAT(1X,I3,5X,I6,6X,1P,D10.3,0P,18X,I3,5X,I6,6X,1P,D10.3)
+ 7400 FORMAT('1',13('*'),1X,'PYSTAT: List of implemented processes',
+ &1X,13('*'))
+ 7500 FORMAT(/1X,65('=')/1X,'I',34X,'I',28X,'I'/1X,'I',12X,
+ &'Subprocess',12X,'I',1X,'ISET',2X,'KFPR(I,1)',2X,'KFPR(I,2)',1X,
+ &'I'/1X,'I',34X,'I',28X,'I'/1X,65('=')/1X,'I',34X,'I',28X,'I')
+ 7600 FORMAT(1X,'I',1X,I3,1X,A28,1X,'I',1X,I4,1X,I10,1X,I10,1X,'I')
+ 7700 FORMAT(1X,'I',34X,'I',28X,'I'/1X,65('='))
+ 8000 FORMAT(1X/ 1X/
+ & 17X,'Sums over R-Violating branching ratios',1X/ 1X
+ & /1X,70('=')/1X,'I',50X,'I',11X,'I',5X,'I'/1X,'I',4X
+ & ,'Mother --> Sum over final state flavours',4X,'I',2X
+ & ,'BR(sum)',2X,'I',2X,'N',2X,'I'/1X,'I',50X,'I',11X,'I',5X,'I'
+ & /1X,70('=')/1X,'I',50X,'I',11X,'I',5X,'I')
+ 8100 FORMAT(1X,'I',50X,'I',11X,'I',5X,'I'/1X,70('=')/1X,'I',1X
+ & ,'Total number of R-Violating modes :',3X,I5,24X,'I'/
+ & 1X,'I',1X,'Total number with non-vanishing BR :',2X,I5,24X
+ & ,'I'/1X,'I',1X,'Total number with BR > 0.001 :',8X,I5,24X,'I'
+ & /1X,70('='))
+ 8200 FORMAT(1X,'I',1X,A9,1X,'-->',1X,A24,11X,
+ & 'I',2X,1P,D8.2,0P,1X,'I',2X,I2,1X,'I')
+ 8300 FORMAT(1X,'I',50X,'I',11X,'I',5X,'I')
+ 8500 FORMAT(1X/ 1X/
+ & 1X,'R-Violating couplings',1X/ 1X /
+ & 1X,55('=')/
+ & 1X,'I',1X,'IJK',1X,'I',2X,'LAMBDA(IJK)',2X,'I',2X
+ & ,'LAMBDA''(IJK)',1X,'I',1X,"LAMBDA''(IJK)",1X,'I'/1X,'I',5X
+ & ,'I',15X,'I',15X,'I',15X,'I')
+ 8600 FORMAT(1X,55('='))
+ 8700 FORMAT(1X,'I',1X,I1,I1,I1,1X,'I',1X,1P,D13.3,0P,1X,'I',1X,1P
+ & ,D13.3,0P,1X,'I',1X,1P,D13.3,0P,1X,'I')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYUPEV
+C...Administers the hard-process generation required for output to the
+C...Les Houches event record.
+
+ SUBROUTINE PYUPEV
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ SAVE /PYJETS/,/PYCTAG/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYPARS/,
+ &/PYINT1/,/PYINT2/,/PYINT4/
+
+C...HEPEUP for output.
+ INTEGER MAXNUP
+ PARAMETER (MAXNUP=500)
+ INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+ DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+ COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+ &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+ &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+ SAVE /HEPEUP/
+
+C...Stop if no subprocesses on.
+ IF(MINT(121).EQ.1.AND.MSTI(53).EQ.1) THEN
+ WRITE(MSTU(11),5100)
+ STOP
+ ENDIF
+
+C...Special flags for hard-process generation only.
+ MSTP71=MSTP(71)
+ MSTP(71)=0
+ MST128=MSTP(128)
+ MSTP(128)=1
+
+C...Initial values for some counters.
+ N=0
+ MINT(5)=MINT(5)+1
+ MINT(7)=0
+ MINT(8)=0
+ MINT(30)=0
+ MINT(83)=0
+ MINT(84)=MSTP(126)
+ MSTU(24)=0
+ MSTU70=0
+ MSTJ14=MSTJ(14)
+C...Normally, use K(I,4:5) colour info rather than /PYCTAG/.
+ MINT(33)=0
+
+C...If variable energies: redo incoming kinematics and cross-section.
+ MSTI(61)=0
+ IF(MSTP(171).EQ.1) THEN
+ CALL PYINKI(1)
+ IF(MSTI(61).EQ.1) THEN
+ MINT(5)=MINT(5)-1
+ RETURN
+ ENDIF
+ IF(MINT(121).GT.1) CALL PYSAVE(3,1)
+ CALL PYXTOT
+ ENDIF
+
+C...Do not allow pileup events.
+ MINT(82)=1
+
+C...Generate variables of hard scattering.
+ MINT(51)=0
+ MSTI(52)=0
+ 100 CONTINUE
+ IF(MINT(51).NE.0.OR.MSTU(24).NE.0) MSTI(52)=MSTI(52)+1
+ MINT(31)=0
+ MINT(51)=0
+ MINT(57)=0
+ CALL PYRAND
+ IF(MSTI(61).EQ.1) THEN
+ MINT(5)=MINT(5)-1
+ RETURN
+ ENDIF
+ IF(MINT(51).EQ.2) RETURN
+ ISUB=MINT(1)
+
+ IF((ISUB.LE.90.OR.ISUB.GE.95).AND.ISUB.NE.99) THEN
+C...Hard scattering (including low-pT):
+C...reconstruct kinematics and colour flow of hard scattering.
+ MINT31=MINT(31)
+ 110 MINT(31)=MINT31
+ MINT(51)=0
+ CALL PYSCAT
+ IF(MINT(51).EQ.1) GOTO 100
+ IPU1=MINT(84)+1
+ IPU2=MINT(84)+2
+
+C...Decay of final state resonances.
+ MINT(32)=0
+ IF(MSTP(41).GE.1.AND.ISET(ISUB).LE.10.AND.ISUB.NE.95)
+ & CALL PYRESD(0)
+ IF(MINT(51).EQ.1) GOTO 100
+ MINT(52)=N
+
+C...Longitudinal boost of hard scattering.
+ BETAZ=(VINT(41)-VINT(42))/(VINT(41)+VINT(42))
+ CALL PYROBO(MINT(84)+1,N,0D0,0D0,0D0,0D0,BETAZ)
+
+ ELSEIF(ISUB.NE.99) THEN
+C...Diffractive and elastic scattering.
+ CALL PYDIFF
+
+ ELSE
+C...DIS scattering (photon flux external).
+ CALL PYDISG
+ IF(MINT(51).EQ.1) GOTO 100
+ ENDIF
+
+C...Check that no odd resonance left undecayed.
+ MINT(54)=N
+ NFIX=N
+ DO 120 I=MINT(84)+1,NFIX
+ IF(K(I,1).GE.1.AND.K(I,1).LE.10.AND.K(I,2).NE.21.AND.
+ & K(I,2).NE.22) THEN
+ KCA=PYCOMP(K(I,2))
+ IF(MWID(KCA).NE.0.AND.MDCY(KCA,1).GE.1) THEN
+ CALL PYRESD(I)
+ IF(MINT(51).EQ.1) GOTO 100
+ ENDIF
+ ENDIF
+ 120 CONTINUE
+
+C...Boost hadronic subsystem to overall rest frame.
+C..(Only relevant when photon inside lepton beam.)
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) CALL PYGAGA(4,WTGAGA)
+
+C...Store event information and calculate Monte Carlo estimates of
+C...subprocess cross-sections.
+ 130 CALL PYDOCU
+
+C...Transform to the desired coordinate frame.
+ 140 CALL PYFRAM(MSTP(124))
+ MSTU(70)=MSTU70
+ PARU(21)=VINT(1)
+
+C...Restore special flags for hard-process generation only.
+ MSTP(71)=MSTP71
+ MSTP(128)=MST128
+
+C...Trace colour tags; convert to LHA style labels.
+ NCT=100
+ DO 150 I=MINT(84)+1,N
+ MCT(I,1)=0
+ MCT(I,2)=0
+ 150 CONTINUE
+ DO 160 I=MINT(84)+1,N
+ KQ=KCHG(PYCOMP(K(I,2)),2)*ISIGN(1,K(I,2))
+ IF(K(I,1).EQ.3.OR.K(I,1).EQ.13.OR.K(I,1).EQ.14) THEN
+ IF(K(I,4).NE.0.AND.(KQ.EQ.1.OR.KQ.EQ.2).AND.MCT(I,1).EQ.0)
+ & THEN
+ IMO=MOD(K(I,4)/MSTU(5),MSTU(5))
+ IDA=MOD(K(I,4),MSTU(5))
+ IF(IMO.NE.0.AND.MOD(K(IMO,5)/MSTU(5),MSTU(5)).EQ.I.AND.
+ & MCT(IMO,2).NE.0) THEN
+ MCT(I,1)=MCT(IMO,2)
+ ELSEIF(IMO.NE.0.AND.MOD(K(IMO,4),MSTU(5)).EQ.I.AND.
+ & MCT(IMO,1).NE.0) THEN
+ MCT(I,1)=MCT(IMO,1)
+ ELSEIF(IDA.NE.0.AND.MOD(K(IDA,5),MSTU(5)).EQ.I.AND.
+ & MCT(IDA,2).NE.0) THEN
+ MCT(I,1)=MCT(IDA,2)
+ ELSE
+ NCT=NCT+1
+ MCT(I,1)=NCT
+ ENDIF
+ ENDIF
+ IF(K(I,5).NE.0.AND.(KQ.EQ.-1.OR.KQ.EQ.2).AND.MCT(I,2).EQ.0)
+ & THEN
+ IMO=MOD(K(I,5)/MSTU(5),MSTU(5))
+ IDA=MOD(K(I,5),MSTU(5))
+ IF(IMO.NE.0.AND.MOD(K(IMO,4)/MSTU(5),MSTU(5)).EQ.I.AND.
+ & MCT(IMO,1).NE.0) THEN
+ MCT(I,2)=MCT(IMO,1)
+ ELSEIF(IMO.NE.0.AND.MOD(K(IMO,5),MSTU(5)).EQ.I.AND.
+ & MCT(IMO,2).NE.0) THEN
+ MCT(I,2)=MCT(IMO,2)
+ ELSEIF(IDA.NE.0.AND.MOD(K(IDA,4),MSTU(5)).EQ.I.AND.
+ & MCT(IDA,1).NE.0) THEN
+ MCT(I,2)=MCT(IDA,1)
+ ELSE
+ NCT=NCT+1
+ MCT(I,2)=NCT
+ ENDIF
+ ENDIF
+ ENDIF
+ 160 CONTINUE
+
+C...Put event in HEPEUP commonblock.
+ NUP=N-MINT(84)
+ IDPRUP=MINT(1)
+ XWGTUP=1D0
+ SCALUP=VINT(53)
+ AQEDUP=VINT(57)
+ AQCDUP=VINT(58)
+ DO 180 I=1,NUP
+ IDUP(I)=K(I+MINT(84),2)
+ IF(I.LE.2) THEN
+ ISTUP(I)=-1
+ MOTHUP(1,I)=0
+ MOTHUP(2,I)=0
+ ELSEIF(K(I+4,3).EQ.0) THEN
+ ISTUP(I)=1
+ MOTHUP(1,I)=1
+ MOTHUP(2,I)=2
+ ELSE
+ ISTUP(I)=1
+ MOTHUP(1,I)=K(I+MINT(84),3)-MINT(84)
+ MOTHUP(2,I)=0
+ ENDIF
+ IF(I.GE.3.AND.K(I+MINT(84),3).GT.0)
+ & ISTUP(K(I+MINT(84),3)-MINT(84))=2
+ ICOLUP(1,I)=MCT(I+MINT(84),1)
+ ICOLUP(2,I)=MCT(I+MINT(84),2)
+ DO 170 J=1,5
+ PUP(J,I)=P(I+MINT(84),J)
+ 170 CONTINUE
+ VTIMUP(I)=V(I,5)
+ SPINUP(I)=9D0
+ 180 CONTINUE
+
+C...Optionally write out event to disk. Minimal size for time/spin fields.
+ IF(MSTP(162).GT.0) THEN
+ WRITE(MSTP(162),5200) NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP
+ DO 190 I=1,NUP
+ IF(VTIMUP(I).EQ.0D0) THEN
+ WRITE(MSTP(162),5300) IDUP(I),ISTUP(I),MOTHUP(1,I),
+ & MOTHUP(2,I),ICOLUP(1,I),ICOLUP(2,I),(PUP(J,I),J=1,5),
+ & ' 0. 9.'
+ ELSE
+ WRITE(MSTP(162),5400) IDUP(I),ISTUP(I),MOTHUP(1,I),
+ & MOTHUP(2,I),ICOLUP(1,I),ICOLUP(2,I),(PUP(J,I),J=1,5),
+ & VTIMUP(I),' 9.'
+ ENDIF
+ 190 CONTINUE
+
+C...Optional extra line with parton-density information.
+ IF(MSTP(165).GE.1) WRITE(MSTP(162),5500) MSTI(15),MSTI(16),
+ & PARI(33),PARI(34),PARI(23),PARI(29),PARI(30)
+ ENDIF
+
+C...Error messages and other print formats.
+ 5100 FORMAT(1X,'Error: no subprocess switched on.'/
+ &1X,'Execution stopped.')
+ 5200 FORMAT(1P,2I6,4E14.6)
+ 5300 FORMAT(1P,I8,5I5,5E18.10,A6)
+ 5400 FORMAT(1P,I8,5I5,5E18.10,E12.4,A3)
+ 5500 FORMAT(1P,'#pdf ',2I5,5E18.10)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYUPIN
+C...Fills the HEPRUP commonblock with info on incoming beams and allowed
+C...processes, and optionally stores that information on file.
+
+ SUBROUTINE PYUPIN
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ SAVE /PYJETS/,/PYSUBS/,/PYPARS/,/PYINT5/
+
+C...User process initialization commonblock.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ SAVE /HEPRUP/
+
+C...Store info on incoming beams.
+ IDBMUP(1)=K(1,2)
+ IDBMUP(2)=K(2,2)
+ EBMUP(1)=P(1,4)
+ EBMUP(2)=P(2,4)
+ PDFGUP(1)=0
+ PDFGUP(2)=0
+ PDFSUP(1)=MSTP(51)
+ PDFSUP(2)=MSTP(51)
+
+C...Event weighting strategy.
+ IDWTUP=3
+
+C...Info on individual processes.
+ NPRUP=0
+ DO 100 ISUB=1,500
+ IF(MSUB(ISUB).EQ.1) THEN
+ NPRUP=NPRUP+1
+ XSECUP(NPRUP)=1D9*XSEC(ISUB,3)
+ XERRUP(NPRUP)=XSECUP(NPRUP)/SQRT(MAX(1D0,DBLE(NGEN(ISUB,3))))
+ XMAXUP(NPRUP)=1D0
+ LPRUP(NPRUP)=ISUB
+ ENDIF
+ 100 CONTINUE
+
+C...Write info to file.
+ IF(MSTP(161).GT.0) THEN
+ WRITE(MSTP(161),5100) IDBMUP(1),IDBMUP(2),EBMUP(1),EBMUP(2),
+ & PDFGUP(1),PDFGUP(2),PDFSUP(1),PDFSUP(2),IDWTUP,NPRUP
+ DO 110 IPR=1,NPRUP
+ WRITE(MSTP(161),5200) XSECUP(IPR),XERRUP(IPR),XMAXUP(IPR),
+ & LPRUP(IPR)
+ 110 CONTINUE
+ ENDIF
+
+C...Formats for printout.
+ 5100 FORMAT(1P,2I8,2E14.6,6I6)
+ 5200 FORMAT(1P,3E14.6,I6)
+
+ RETURN
+ END
+
+
+C*********************************************************************
+
+C...Combine the two old-style Pythia initialization and event files
+C...into a single Les Houches Event File.
+
+ SUBROUTINE PYLHEF
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...PYTHIA commonblock: only used to provide read/write units and version.
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ SAVE /PYPARS/
+
+C...User process initialization commonblock.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ SAVE /HEPRUP/
+
+C...User process event common block.
+ INTEGER MAXNUP
+ PARAMETER (MAXNUP=500)
+ INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+ DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+ COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+ &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+ &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+ SAVE /HEPEUP/
+
+C...Lines to read in assumed never longer than 200 characters.
+ PARAMETER (MAXLEN=200)
+ CHARACTER*(MAXLEN) STRING
+
+C...Format for reading lines.
+ CHARACTER*6 STRFMT
+ STRFMT='(A000)'
+ WRITE(STRFMT(3:5),'(I3)') MAXLEN
+
+C...Rewind initialization and event files.
+ REWIND MSTP(161)
+ REWIND MSTP(162)
+
+C...Write header info.
+ WRITE(MSTP(163),'(A)') '<LesHouchesEvents version="1.0">'
+ WRITE(MSTP(163),'(A)') '<!--'
+ WRITE(MSTP(163),'(A,I1,A1,I3)') 'File generated with PYTHIA ',
+ &MSTP(181),'.',MSTP(182)
+ WRITE(MSTP(163),'(A)') '-->'
+
+C...Read first line of initialization info and get number of processes.
+ READ(MSTP(161),'(A)',END=400,ERR=400) STRING
+ READ(STRING,*,ERR=400) IDBMUP(1),IDBMUP(2),EBMUP(1),
+ &EBMUP(2),PDFGUP(1),PDFGUP(2),PDFSUP(1),PDFSUP(2),IDWTUP,NPRUP
+
+C...Copy initialization lines, omitting trailing blanks.
+C...Embed in <init> ... </init> block.
+ WRITE(MSTP(163),'(A)') '<init>'
+ DO 140 IPR=0,NPRUP
+ IF(IPR.GT.0) READ(MSTP(161),'(A)',END=400,ERR=400) STRING
+ LEN=MAXLEN+1
+ 120 LEN=LEN-1
+ IF(LEN.GT.1.AND.STRING(LEN:LEN).EQ.' ') GOTO 120
+ WRITE(MSTP(163),'(A)',ERR=400) STRING(1:LEN)
+ 140 CONTINUE
+ WRITE(MSTP(163),'(A)') '</init>'
+
+C...Begin event loop. Read first line of event info or already done.
+ READ(MSTP(162),'(A)',END=320,ERR=400) STRING
+ 200 CONTINUE
+
+C...Look at first line to know number of particles in event.
+ READ(STRING,*,ERR=400) NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP
+
+C...Begin an <event> block. Copy event lines, omitting trailing blanks.
+ WRITE(MSTP(163),'(A)') '<event>'
+ DO 240 I=0,NUP
+ IF(I.GT.0) READ(MSTP(162),'(A)',END=400,ERR=400) STRING
+ LEN=MAXLEN+1
+ 220 LEN=LEN-1
+ IF(LEN.GT.1.AND.STRING(LEN:LEN).EQ.' ') GOTO 220
+ WRITE(MSTP(163),'(A)',ERR=400) STRING(1:LEN)
+ 240 CONTINUE
+
+C...Copy trailing comment lines - with a # in the first column - as is.
+ 260 READ(MSTP(162),'(A)',END=300,ERR=400) STRING
+ IF(STRING(1:1).EQ.'#') THEN
+ LEN=MAXLEN+1
+ 280 LEN=LEN-1
+ IF(LEN.GT.1.AND.STRING(LEN:LEN).EQ.' ') GOTO 280
+ WRITE(MSTP(163),'(A)',ERR=400) STRING(1:LEN)
+ GOTO 260
+ ENDIF
+
+C..End the <event> block. Loop back to look for next event.
+ WRITE(MSTP(163),'(A)') '</event>'
+ GOTO 200
+
+C...Successfully reached end of event loop: write closing tag
+C...and remove temporary intermediate files (unless asked not to).
+ 300 WRITE(MSTP(163),'(A)') '</event>'
+ 320 WRITE(MSTP(163),'(A)') '</LesHouchesEvents>'
+ IF(MSTP(164).EQ.1) RETURN
+ CLOSE(MSTP(161),ERR=400,STATUS='DELETE')
+ CLOSE(MSTP(162),ERR=400,STATUS='DELETE')
+ RETURN
+
+C...Error exit.
+ 400 WRITE(*,*) ' PYLHEF file joining failed!'
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYINRE
+C...Calculates full and effective widths of gauge bosons, stores
+C...masses and widths, rescales coefficients to be used for
+C...resonance production generation.
+
+ SUBROUTINE PYINRE
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT6/PROC(0:500)
+ CHARACTER PROC*28
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYDAT4/,/PYSUBS/,/PYPARS/,
+ &/PYINT1/,/PYINT2/,/PYINT4/,/PYINT6/,/PYMSSM/
+C...Local arrays and data.
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5),WDTPM(0:400),
+ &WDTEM(0:400,0:5),KCORD(500),PMORD(500)
+
+C...Born level couplings in MSSM Higgs doublet sector.
+ XW=PARU(102)
+ XWV=XW
+ IF(MSTP(8).GE.2) XW=1D0-(PMAS(24,1)/PMAS(23,1))**2
+ XW1=1D0-XW
+ IF(MSTP(4).EQ.2) THEN
+ TANBE=PARU(141)
+ RATBE=((1D0-TANBE**2)/(1D0+TANBE**2))**2
+ SQMZ=PMAS(23,1)**2
+ SQMW=PMAS(24,1)**2
+ SQMH=PMAS(25,1)**2
+ SQMA=SQMH*(SQMZ-SQMH)/(SQMZ*RATBE-SQMH)
+ SQMHP=0.5D0*(SQMA+SQMZ+SQRT((SQMA+SQMZ)**2-4D0*SQMA*SQMZ*RATBE))
+ SQMHC=SQMA+SQMW
+ IF(SQMH.GE.SQMZ.OR.MIN(SQMA,SQMHP,SQMHC).LE.0D0) THEN
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(101)
+ ENDIF
+ PMAS(35,1)=SQRT(SQMHP)
+ PMAS(36,1)=SQRT(SQMA)
+ PMAS(37,1)=SQRT(SQMHC)
+ ALSU=0.5D0*ATAN(2D0*TANBE*(SQMA+SQMZ)/((1D0-TANBE**2)*
+ & (SQMA-SQMZ)))
+ BESU=ATAN(TANBE)
+ PARU(142)=1D0
+ PARU(143)=1D0
+ PARU(161)=-SIN(ALSU)/COS(BESU)
+ PARU(162)=COS(ALSU)/SIN(BESU)
+ PARU(163)=PARU(161)
+ PARU(164)=SIN(BESU-ALSU)
+ PARU(165)=PARU(164)
+ PARU(168)=SIN(BESU-ALSU)+0.5D0*COS(2D0*BESU)*SIN(BESU+ALSU)/XW
+ PARU(171)=COS(ALSU)/COS(BESU)
+ PARU(172)=SIN(ALSU)/SIN(BESU)
+ PARU(173)=PARU(171)
+ PARU(174)=COS(BESU-ALSU)
+ PARU(175)=PARU(174)
+ PARU(176)=COS(2D0*ALSU)*COS(BESU+ALSU)-2D0*SIN(2D0*ALSU)*
+ & SIN(BESU+ALSU)
+ PARU(177)=COS(2D0*BESU)*COS(BESU+ALSU)
+ PARU(178)=COS(BESU-ALSU)-0.5D0*COS(2D0*BESU)*COS(BESU+ALSU)/XW
+ PARU(181)=TANBE
+ PARU(182)=1D0/TANBE
+ PARU(183)=PARU(181)
+ PARU(184)=0D0
+ PARU(185)=PARU(184)
+ PARU(186)=COS(BESU-ALSU)
+ PARU(187)=SIN(BESU-ALSU)
+ PARU(188)=PARU(186)
+ PARU(189)=PARU(187)
+ PARU(190)=0D0
+ PARU(195)=COS(BESU-ALSU)
+ ENDIF
+
+C...Reset effective widths of gauge bosons.
+ DO 110 I=1,500
+ DO 100 J=1,5
+ WIDS(I,J)=1D0
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...Order resonances by increasing mass (except Z0 and W+/-).
+ NRES=0
+ DO 140 KC=1,500
+ KF=KCHG(KC,4)
+ IF(KF.EQ.0) GOTO 140
+ IF(MWID(KC).EQ.0) GOTO 140
+ IF(KC.EQ.7.OR.KC.EQ.8.OR.KC.EQ.17.OR.KC.EQ.18) THEN
+ IF(MSTP(1).LE.3) GOTO 140
+ ENDIF
+ IF(KF/KSUSY1.EQ.1.OR.KF/KSUSY1.EQ.2) THEN
+ IF(IMSS(1).LE.0) GOTO 140
+ ENDIF
+ NRES=NRES+1
+ PMRES=PMAS(KC,1)
+ IF(KC.EQ.23.OR.KC.EQ.24) PMRES=0D0
+ DO 120 I1=NRES-1,1,-1
+ IF(PMRES.GE.PMORD(I1)) GOTO 130
+ KCORD(I1+1)=KCORD(I1)
+ PMORD(I1+1)=PMORD(I1)
+ 120 CONTINUE
+ 130 KCORD(I1+1)=KC
+ PMORD(I1+1)=PMRES
+ 140 CONTINUE
+
+C...Loop over possible resonances.
+ DO 180 I=1,NRES
+ KC=KCORD(I)
+ KF=KCHG(KC,4)
+
+C...Check that no fourth generation channels on by mistake.
+ IF(MSTP(1).LE.3) THEN
+ DO 150 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ KFA1=IABS(KFDP(IDC,1))
+ KFA2=IABS(KFDP(IDC,2))
+ IF(KFA1.EQ.7.OR.KFA1.EQ.8.OR.KFA1.EQ.17.OR.KFA1.EQ.18.OR.
+ & KFA2.EQ.7.OR.KFA2.EQ.8.OR.KFA2.EQ.17.OR.KFA2.EQ.18)
+ & MDME(IDC,1)=-1
+ 150 CONTINUE
+ ENDIF
+
+C...Check that no supersymmetric channels on by mistake.
+ IF(IMSS(1).LE.0) THEN
+ DO 160 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ KFA1S=IABS(KFDP(IDC,1))/KSUSY1
+ KFA2S=IABS(KFDP(IDC,2))/KSUSY1
+ IF(KFA1S.EQ.1.OR.KFA1S.EQ.2.OR.KFA2S.EQ.1.OR.KFA2S.EQ.2)
+ & MDME(IDC,1)=-1
+ 160 CONTINUE
+ ENDIF
+
+C...Find mass and evaluate width.
+ PMR=PMAS(KC,1)
+ IF(KF.EQ.25.OR.KF.EQ.35.OR.KF.EQ.36) MINT(62)=1
+ IF(MWID(KC).EQ.3) MINT(63)=1
+ CALL PYWIDT(KF,PMR**2,WDTP,WDTE)
+ MINT(51)=0
+
+C...Evaluate suppression factors due to non-simulated channels.
+ IF(KCHG(KC,3).EQ.0) THEN
+ WDTP0I=0D0
+ IF(WDTP(0).GT.0D0) WDTP0I=1D0/WDTP(0)
+ WIDS(KC,1)=((WDTE(0,1)+WDTE(0,2))**2+
+ & 2D0*(WDTE(0,1)+WDTE(0,2))*(WDTE(0,4)+WDTE(0,5))+
+ & 2D0*WDTE(0,4)*WDTE(0,5))*WDTP0I**2
+ WIDS(KC,2)=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))*WDTP0I
+ WIDS(KC,3)=0D0
+ WIDS(KC,4)=0D0
+ WIDS(KC,5)=0D0
+ ELSE
+ IF(MWID(KC).EQ.3) MINT(63)=1
+ CALL PYWIDT(-KF,PMR**2,WDTPM,WDTEM)
+ MINT(51)=0
+ WDTP0I=0D0
+ IF(WDTP(0).GT.0D0) WDTP0I=1D0/WDTP(0)
+ WIDS(KC,1)=((WDTE(0,1)+WDTE(0,2))*(WDTEM(0,1)+WDTEM(0,3))+
+ & (WDTE(0,1)+WDTE(0,2))*(WDTEM(0,4)+WDTEM(0,5))+
+ & (WDTE(0,4)+WDTE(0,5))*(WDTEM(0,1)+WDTEM(0,3))+
+ & WDTE(0,4)*WDTEM(0,5)+WDTE(0,5)*WDTEM(0,4))*WDTP0I**2
+ WIDS(KC,2)=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))*WDTP0I
+ WIDS(KC,3)=(WDTEM(0,1)+WDTEM(0,3)+WDTEM(0,4))*WDTP0I
+ WIDS(KC,4)=((WDTE(0,1)+WDTE(0,2))**2+
+ & 2D0*(WDTE(0,1)+WDTE(0,2))*(WDTE(0,4)+WDTE(0,5))+
+ & 2D0*WDTE(0,4)*WDTE(0,5))*WDTP0I**2
+ WIDS(KC,5)=((WDTEM(0,1)+WDTEM(0,3))**2+
+ & 2D0*(WDTEM(0,1)+WDTEM(0,3))*(WDTEM(0,4)+WDTEM(0,5))+
+ & 2D0*WDTEM(0,4)*WDTEM(0,5))*WDTP0I**2
+ ENDIF
+
+C...Set resonance widths and branching ratios;
+C...also on/off switch for decays.
+ IF(MWID(KC).EQ.1.OR.MWID(KC).EQ.3) THEN
+ PMAS(KC,2)=WDTP(0)
+ PMAS(KC,3)=MIN(0.9D0*PMAS(KC,1),10D0*PMAS(KC,2))
+ IF(MSTP(41).EQ.0.OR.MSTP(41).EQ.1) MDCY(KC,1)=MSTP(41)
+ DO 170 J=1,MDCY(KC,3)
+ IDC=J+MDCY(KC,2)-1
+ BRAT(IDC)=0D0
+ IF(WDTP(0).GT.0D0) BRAT(IDC)=WDTP(J)/WDTP(0)
+ 170 CONTINUE
+ ENDIF
+ 180 CONTINUE
+
+C...Flavours of leptoquark: redefine charge and name.
+ KFLQQ=KFDP(MDCY(42,2),1)
+ KFLQL=KFDP(MDCY(42,2),2)
+ KCHG(42,1)=KCHG(PYCOMP(KFLQQ),1)*ISIGN(1,KFLQQ)+
+ &KCHG(PYCOMP(KFLQL),1)*ISIGN(1,KFLQL)
+ LL=1
+ IF(IABS(KFLQL).EQ.13) LL=2
+ IF(IABS(KFLQL).EQ.15) LL=3
+ CHAF(42,1)='LQ_'//CHAF(IABS(KFLQQ),1)(1:1)//
+ &CHAF(IABS(KFLQL),1)(1:LL)//' '
+ CHAF(42,2)=CHAF(42,2)(1:4+LL)//'bar '
+
+C...Special cases in treatment of gamma*/Z0: redefine process name.
+ IF(MSTP(43).EQ.1) THEN
+ PROC(1)='f + fbar -> gamma*'
+ PROC(15)='f + fbar -> g + gamma*'
+ PROC(19)='f + fbar -> gamma + gamma*'
+ PROC(30)='f + g -> f + gamma*'
+ PROC(35)='f + gamma -> f + gamma*'
+ ELSEIF(MSTP(43).EQ.2) THEN
+ PROC(1)='f + fbar -> Z0'
+ PROC(15)='f + fbar -> g + Z0'
+ PROC(19)='f + fbar -> gamma + Z0'
+ PROC(30)='f + g -> f + Z0'
+ PROC(35)='f + gamma -> f + Z0'
+ ELSEIF(MSTP(43).EQ.3) THEN
+ PROC(1)='f + fbar -> gamma*/Z0'
+ PROC(15)='f + fbar -> g + gamma*/Z0'
+ PROC(19)='f+ fbar -> gamma + gamma*/Z0'
+ PROC(30)='f + g -> f + gamma*/Z0'
+ PROC(35)='f + gamma -> f + gamma*/Z0'
+ ENDIF
+
+C...Special cases in treatment of gamma*/Z0/Z'0: redefine process name.
+ IF(MSTP(44).EQ.1) THEN
+ PROC(141)='f + fbar -> gamma*'
+ ELSEIF(MSTP(44).EQ.2) THEN
+ PROC(141)='f + fbar -> Z0'
+ ELSEIF(MSTP(44).EQ.3) THEN
+ PROC(141)='f + fbar -> Z''0'
+ ELSEIF(MSTP(44).EQ.4) THEN
+ PROC(141)='f + fbar -> gamma*/Z0'
+ ELSEIF(MSTP(44).EQ.5) THEN
+ PROC(141)='f + fbar -> gamma*/Z''0'
+ ELSEIF(MSTP(44).EQ.6) THEN
+ PROC(141)='f + fbar -> Z0/Z''0'
+ ELSEIF(MSTP(44).EQ.7) THEN
+ PROC(141)='f + fbar -> gamma*/Z0/Z''0'
+ ENDIF
+
+C...Special cases in treatment of WW -> WW: redefine process name.
+ IF(MSTP(45).EQ.1) THEN
+ PROC(77)='W+ + W+ -> W+ + W+'
+ ELSEIF(MSTP(45).EQ.2) THEN
+ PROC(77)='W+ + W- -> W+ + W-'
+ ELSEIF(MSTP(45).EQ.3) THEN
+ PROC(77)='W+/- + W+/- -> W+/- + W+/-'
+ ENDIF
+
+C...Format for error information.
+ 5000 FORMAT(1X,'Error: unphysical input tan^2(beta) and m_H ',
+ &'combination'/1X,'Execution stopped!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYINBM
+C...Identifies the two incoming particles and the choice of frame.
+
+ SUBROUTINE PYINBM(CHFRAM,CHBEAM,CHTARG,WIN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...User process initialization commonblock.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ SAVE /HEPRUP/
+
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYSUBS/,/PYPARS/,/PYINT1/
+
+C...Local arrays, character variables and data.
+ CHARACTER CHFRAM*12,CHBEAM*12,CHTARG*12,CHCOM(3)*12,CHALP(2)*26,
+ &CHIDNT(3)*12,CHTEMP*12,CHCDE(39)*12,CHINIT*76,CHNAME*16
+ DIMENSION LEN(3),KCDE(39),PM(2)
+ DATA CHALP/'abcdefghijklmnopqrstuvwxyz',
+ &'ABCDEFGHIJKLMNOPQRSTUVWXYZ'/
+ DATA CHCDE/ 'e- ','e+ ','nu_e ',
+ &'nu_ebar ','mu- ','mu+ ','nu_mu ',
+ &'nu_mubar ','tau- ','tau+ ','nu_tau ',
+ &'nu_taubar ','pi+ ','pi- ','n0 ',
+ &'nbar0 ','p+ ','pbar- ','gamma ',
+ &'lambda0 ','sigma- ','sigma0 ','sigma+ ',
+ &'xi- ','xi0 ','omega- ','pi0 ',
+ &'reggeon ','pomeron ','gamma/e- ','gamma/e+ ',
+ &'gamma/mu- ','gamma/mu+ ','gamma/tau- ','gamma/tau+ ',
+ &'k+ ','k- ','ks0 ','kl0 '/
+ DATA KCDE/11,-11,12,-12,13,-13,14,-14,15,-15,16,-16,
+ &211,-211,2112,-2112,2212,-2212,22,3122,3112,3212,3222,
+ &3312,3322,3334,111,110,990,6*22,321,-321,310,130/
+
+C...Store initial energy. Default frame.
+ VINT(290)=WIN
+ MINT(111)=0
+
+C...Special user process initialization; convert to normal input.
+ IF(CHFRAM(1:1).EQ.'u'.OR.CHFRAM(1:1).EQ.'U') THEN
+ MINT(111)=11
+ IF(PDFGUP(1).EQ.-9.OR.PDFGUP(2).EQ.-9) MINT(111)=12
+ CALL PYNAME(IDBMUP(1),CHNAME)
+ CHBEAM=CHNAME(1:12)
+ CALL PYNAME(IDBMUP(2),CHNAME)
+ CHTARG=CHNAME(1:12)
+ ENDIF
+
+C...Convert character variables to lowercase and find their length.
+ CHCOM(1)=CHFRAM
+ CHCOM(2)=CHBEAM
+ CHCOM(3)=CHTARG
+ DO 130 I=1,3
+ LEN(I)=12
+ DO 110 LL=12,1,-1
+ IF(LEN(I).EQ.LL.AND.CHCOM(I)(LL:LL).EQ.' ') LEN(I)=LL-1
+ DO 100 LA=1,26
+ IF(CHCOM(I)(LL:LL).EQ.CHALP(2)(LA:LA)) CHCOM(I)(LL:LL)=
+ & CHALP(1)(LA:LA)
+ 100 CONTINUE
+ 110 CONTINUE
+ CHIDNT(I)=CHCOM(I)
+
+C...Fix up bar, underscore and charge in particle name (if needed).
+ DO 120 LL=1,10
+ IF(CHIDNT(I)(LL:LL).EQ.'~') THEN
+ CHTEMP=CHIDNT(I)
+ CHIDNT(I)=CHTEMP(1:LL-1)//'bar'//CHTEMP(LL+1:10)//' '
+ ENDIF
+ 120 CONTINUE
+ IF(CHIDNT(I)(1:2).EQ.'nu'.AND.CHIDNT(I)(3:3).NE.'_') THEN
+ CHTEMP=CHIDNT(I)
+ CHIDNT(I)='nu_'//CHTEMP(3:7)
+ ELSEIF(CHIDNT(I)(1:2).EQ.'n ') THEN
+ CHIDNT(I)(1:3)='n0 '
+ ELSEIF(CHIDNT(I)(1:4).EQ.'nbar') THEN
+ CHIDNT(I)(1:5)='nbar0'
+ ELSEIF(CHIDNT(I)(1:2).EQ.'p ') THEN
+ CHIDNT(I)(1:3)='p+ '
+ ELSEIF(CHIDNT(I)(1:4).EQ.'pbar'.OR.
+ & CHIDNT(I)(1:2).EQ.'p-') THEN
+ CHIDNT(I)(1:5)='pbar-'
+ ELSEIF(CHIDNT(I)(1:6).EQ.'lambda') THEN
+ CHIDNT(I)(7:7)='0'
+ ELSEIF(CHIDNT(I)(1:3).EQ.'reg') THEN
+ CHIDNT(I)(1:7)='reggeon'
+ ELSEIF(CHIDNT(I)(1:3).EQ.'pom') THEN
+ CHIDNT(I)(1:7)='pomeron'
+ ENDIF
+ 130 CONTINUE
+
+C...Identify free initialization.
+ IF(CHCOM(1)(1:2).EQ.'no') THEN
+ MINT(65)=1
+ RETURN
+ ENDIF
+
+C...Identify incoming beam and target particles.
+ DO 160 I=1,2
+ DO 140 J=1,39
+ IF(CHIDNT(I+1).EQ.CHCDE(J)) MINT(10+I)=KCDE(J)
+ 140 CONTINUE
+ PM(I)=PYMASS(MINT(10+I))
+ VINT(2+I)=PM(I)
+ MINT(140+I)=0
+ IF(MINT(10+I).EQ.22.AND.CHIDNT(I+1)(6:6).EQ.'/') THEN
+ CHTEMP=CHIDNT(I+1)(7:12)//' '
+ DO 150 J=1,12
+ IF(CHTEMP.EQ.CHCDE(J)) MINT(140+I)=KCDE(J)
+ 150 CONTINUE
+ PM(I)=PYMASS(MINT(140+I))
+ VINT(302+I)=PM(I)
+ ENDIF
+ 160 CONTINUE
+ IF(MINT(11).EQ.0) WRITE(MSTU(11),5000) CHBEAM(1:LEN(2))
+ IF(MINT(12).EQ.0) WRITE(MSTU(11),5100) CHTARG(1:LEN(3))
+ IF(MINT(11).EQ.0.OR.MINT(12).EQ.0) CALL PYSTOP(7)
+
+C...Identify choice of frame and input energies.
+ CHINIT=' '
+
+C...Events defined in the CM frame.
+ IF(CHCOM(1)(1:2).EQ.'cm') THEN
+ MINT(111)=1
+ S=WIN**2
+ IF(MSTP(122).GE.1) THEN
+ IF(CHCOM(2)(1:1).NE.'e') THEN
+ LOFFS=(31-(LEN(2)+LEN(3)))/2
+ CHINIT(LOFFS+1:76)='PYTHIA will be initialized for a '//
+ & CHCOM(2)(1:LEN(2))//' on '//CHCOM(3)(1:LEN(3))//
+ & ' collider'//' '
+ ELSE
+ LOFFS=(30-(LEN(2)+LEN(3)))/2
+ CHINIT(LOFFS+1:76)='PYTHIA will be initialized for an '//
+ & CHCOM(2)(1:LEN(2))//' on '//CHCOM(3)(1:LEN(3))//
+ & ' collider'//' '
+ ENDIF
+ WRITE(MSTU(11),5200) CHINIT
+ WRITE(MSTU(11),5300) WIN
+ ENDIF
+
+C...Events defined in fixed target frame.
+ ELSEIF(CHCOM(1)(1:3).EQ.'fix') THEN
+ MINT(111)=2
+ S=PM(1)**2+PM(2)**2+2D0*PM(2)*SQRT(PM(1)**2+WIN**2)
+ IF(MSTP(122).GE.1) THEN
+ LOFFS=(29-(LEN(2)+LEN(3)))/2
+ CHINIT(LOFFS+1:76)='PYTHIA will be initialized for '//
+ & CHCOM(2)(1:LEN(2))//' on '//CHCOM(3)(1:LEN(3))//
+ & ' fixed target'//' '
+ WRITE(MSTU(11),5200) CHINIT
+ WRITE(MSTU(11),5400) WIN
+ WRITE(MSTU(11),5500) SQRT(S)
+ ENDIF
+
+C...Frame defined by user three-vectors.
+ ELSEIF(CHCOM(1)(1:1).EQ.'3') THEN
+ MINT(111)=3
+ P(1,5)=PM(1)
+ P(2,5)=PM(2)
+ P(1,4)=SQRT(P(1,1)**2+P(1,2)**2+P(1,3)**2+P(1,5)**2)
+ P(2,4)=SQRT(P(2,1)**2+P(2,2)**2+P(2,3)**2+P(2,5)**2)
+ S=(P(1,4)+P(2,4))**2-(P(1,1)+P(2,1))**2-(P(1,2)+P(2,2))**2-
+ & (P(1,3)+P(2,3))**2
+ IF(MSTP(122).GE.1) THEN
+ LOFFS=(22-(LEN(2)+LEN(3)))/2
+ CHINIT(LOFFS+1:76)='PYTHIA will be initialized for '//
+ & CHCOM(2)(1:LEN(2))//' on '//CHCOM(3)(1:LEN(3))//
+ & ' user configuration'//' '
+ WRITE(MSTU(11),5200) CHINIT
+ WRITE(MSTU(11),5600)
+ WRITE(MSTU(11),5700) CHCOM(2),P(1,1),P(1,2),P(1,3),P(1,4)
+ WRITE(MSTU(11),5700) CHCOM(3),P(2,1),P(2,2),P(2,3),P(2,4)
+ WRITE(MSTU(11),5500) SQRT(MAX(0D0,S))
+ ENDIF
+
+C...Frame defined by user four-vectors.
+ ELSEIF(CHCOM(1)(1:1).EQ.'4') THEN
+ MINT(111)=4
+ PMS1=P(1,4)**2-P(1,1)**2-P(1,2)**2-P(1,3)**2
+ P(1,5)=SIGN(SQRT(ABS(PMS1)),PMS1)
+ PMS2=P(2,4)**2-P(2,1)**2-P(2,2)**2-P(2,3)**2
+ P(2,5)=SIGN(SQRT(ABS(PMS2)),PMS2)
+ S=(P(1,4)+P(2,4))**2-(P(1,1)+P(2,1))**2-(P(1,2)+P(2,2))**2-
+ & (P(1,3)+P(2,3))**2
+ IF(MSTP(122).GE.1) THEN
+ LOFFS=(22-(LEN(2)+LEN(3)))/2
+ CHINIT(LOFFS+1:76)='PYTHIA will be initialized for '//
+ & CHCOM(2)(1:LEN(2))//' on '//CHCOM(3)(1:LEN(3))//
+ & ' user configuration'//' '
+ WRITE(MSTU(11),5200) CHINIT
+ WRITE(MSTU(11),5600)
+ WRITE(MSTU(11),5700) CHCOM(2),P(1,1),P(1,2),P(1,3),P(1,4)
+ WRITE(MSTU(11),5700) CHCOM(3),P(2,1),P(2,2),P(2,3),P(2,4)
+ WRITE(MSTU(11),5500) SQRT(MAX(0D0,S))
+ ENDIF
+
+C...Frame defined by user five-vectors.
+ ELSEIF(CHCOM(1)(1:1).EQ.'5') THEN
+ MINT(111)=5
+ S=(P(1,4)+P(2,4))**2-(P(1,1)+P(2,1))**2-(P(1,2)+P(2,2))**2-
+ & (P(1,3)+P(2,3))**2
+ IF(MSTP(122).GE.1) THEN
+ LOFFS=(22-(LEN(2)+LEN(3)))/2
+ CHINIT(LOFFS+1:76)='PYTHIA will be initialized for '//
+ & CHCOM(2)(1:LEN(2))//' on '//CHCOM(3)(1:LEN(3))//
+ & ' user configuration'//' '
+ WRITE(MSTU(11),5200) CHINIT
+ WRITE(MSTU(11),5600)
+ WRITE(MSTU(11),5700) CHCOM(2),P(1,1),P(1,2),P(1,3),P(1,4)
+ WRITE(MSTU(11),5700) CHCOM(3),P(2,1),P(2,2),P(2,3),P(2,4)
+ WRITE(MSTU(11),5500) SQRT(MAX(0D0,S))
+ ENDIF
+
+C...Frame defined by HEPRUP common block.
+ ELSEIF(MINT(111).GE.11) THEN
+ S=(EBMUP(1)+EBMUP(2))**2-(SQRT(MAX(0D0,EBMUP(1)**2-PM(1)**2))-
+ & SQRT(MAX(0D0,EBMUP(2)**2-PM(2)**2)))**2
+ IF(MSTP(122).GE.1) THEN
+ LOFFS=(22-(LEN(2)+LEN(3)))/2
+ CHINIT(LOFFS+1:76)='PYTHIA will be initialized for '//
+ & CHCOM(2)(1:LEN(2))//' on '//CHCOM(3)(1:LEN(3))//
+ & ' user configuration'//' '
+ WRITE(MSTU(11),5200) CHINIT
+ WRITE(MSTU(11),6000) EBMUP(1),EBMUP(2)
+ WRITE(MSTU(11),5500) SQRT(MAX(0D0,S))
+ ENDIF
+
+C...Unknown frame. Error for too low CM energy.
+ ELSE
+ WRITE(MSTU(11),5800) CHFRAM(1:LEN(1))
+ CALL PYSTOP(7)
+ ENDIF
+ IF(S.LT.PARP(2)**2) THEN
+ WRITE(MSTU(11),5900) SQRT(S)
+ CALL PYSTOP(7)
+ ENDIF
+
+C...Formats for initialization and error information.
+ 5000 FORMAT(1X,'Error: unrecognized beam particle ''',A,'''D0'/
+ &1X,'Execution stopped!')
+ 5100 FORMAT(1X,'Error: unrecognized target particle ''',A,'''D0'/
+ &1X,'Execution stopped!')
+ 5200 FORMAT(/1X,78('=')/1X,'I',76X,'I'/1X,'I',A76,'I')
+ 5300 FORMAT(1X,'I',18X,'at',1X,F10.3,1X,'GeV center-of-mass energy',
+ &19X,'I'/1X,'I',76X,'I'/1X,78('='))
+ 5400 FORMAT(1X,'I',22X,'at',1X,F10.3,1X,'GeV/c lab-momentum',22X,'I')
+ 5500 FORMAT(1X,'I',76X,'I'/1X,'I',11X,'corresponding to',1X,F10.3,1X,
+ &'GeV center-of-mass energy',12X,'I'/1X,'I',76X,'I'/1X,78('='))
+ 5600 FORMAT(1X,'I',76X,'I'/1X,'I',18X,'px (GeV/c)',3X,'py (GeV/c)',3X,
+ &'pz (GeV/c)',6X,'E (GeV)',9X,'I')
+ 5700 FORMAT(1X,'I',8X,A8,4(2X,F10.3,1X),8X,'I')
+ 5800 FORMAT(1X,'Error: unrecognized coordinate frame ''',A,'''D0'/
+ &1X,'Execution stopped!')
+ 5900 FORMAT(1X,'Error: too low CM energy,',F8.3,' GeV for event ',
+ &'generation.'/1X,'Execution stopped!')
+ 6000 FORMAT(1X,'I',12X,'with',1X,F10.3,1X,'GeV on',1X,F10.3,1X,
+ &'GeV beam energies',13X,'I')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYINKI
+C...Sets up kinematics, including rotations and boosts to/from CM frame.
+
+ SUBROUTINE PYINKI(MODKI)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...User process initialization commonblock.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ SAVE /HEPRUP/
+
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYSUBS/,/PYPARS/,/PYINT1/
+
+C...Set initial flavour state.
+ N=2
+ DO 100 I=1,2
+ K(I,1)=1
+ K(I,2)=MINT(10+I)
+ IF(MINT(140+I).NE.0) K(I,2)=MINT(140+I)
+ 100 CONTINUE
+
+C...Reset boost. Do kinematics for various cases.
+ DO 110 J=6,10
+ VINT(J)=0D0
+ 110 CONTINUE
+
+C...Set up kinematics for events defined in CM frame.
+ IF(MINT(111).EQ.1) THEN
+ WIN=VINT(290)
+ IF(MODKI.EQ.1) WIN=PARP(171)*VINT(290)
+ S=WIN**2
+ P(1,5)=VINT(3)
+ P(2,5)=VINT(4)
+ IF(MINT(141).NE.0) P(1,5)=VINT(303)
+ IF(MINT(142).NE.0) P(2,5)=VINT(304)
+ P(1,1)=0D0
+ P(1,2)=0D0
+ P(2,1)=0D0
+ P(2,2)=0D0
+ P(1,3)=SQRT(((S-P(1,5)**2-P(2,5)**2)**2-(2D0*P(1,5)*P(2,5))**2)/
+ & (4D0*S))
+ P(2,3)=-P(1,3)
+ P(1,4)=SQRT(P(1,3)**2+P(1,5)**2)
+ P(2,4)=SQRT(P(2,3)**2+P(2,5)**2)
+
+C...Set up kinematics for fixed target events.
+ ELSEIF(MINT(111).EQ.2) THEN
+ WIN=VINT(290)
+ IF(MODKI.EQ.1) WIN=PARP(171)*VINT(290)
+ P(1,5)=VINT(3)
+ P(2,5)=VINT(4)
+ IF(MINT(141).NE.0) P(1,5)=VINT(303)
+ IF(MINT(142).NE.0) P(2,5)=VINT(304)
+ P(1,1)=0D0
+ P(1,2)=0D0
+ P(2,1)=0D0
+ P(2,2)=0D0
+ P(1,3)=WIN
+ P(1,4)=SQRT(P(1,3)**2+P(1,5)**2)
+ P(2,3)=0D0
+ P(2,4)=P(2,5)
+ S=P(1,5)**2+P(2,5)**2+2D0*P(2,4)*P(1,4)
+ VINT(10)=P(1,3)/(P(1,4)+P(2,4))
+ CALL PYROBO(0,0,0D0,0D0,0D0,0D0,-VINT(10))
+
+C...Set up kinematics for events in user-defined frame.
+ ELSEIF(MINT(111).EQ.3) THEN
+ P(1,5)=VINT(3)
+ P(2,5)=VINT(4)
+ IF(MINT(141).NE.0) P(1,5)=VINT(303)
+ IF(MINT(142).NE.0) P(2,5)=VINT(304)
+ P(1,4)=SQRT(P(1,1)**2+P(1,2)**2+P(1,3)**2+P(1,5)**2)
+ P(2,4)=SQRT(P(2,1)**2+P(2,2)**2+P(2,3)**2+P(2,5)**2)
+ DO 120 J=1,3
+ VINT(7+J)=(P(1,J)+P(2,J))/(P(1,4)+P(2,4))
+ 120 CONTINUE
+ CALL PYROBO(0,0,0D0,0D0,-VINT(8),-VINT(9),-VINT(10))
+ VINT(7)=PYANGL(P(1,1),P(1,2))
+ CALL PYROBO(0,0,0D0,-VINT(7),0D0,0D0,0D0)
+ VINT(6)=PYANGL(P(1,3),P(1,1))
+ CALL PYROBO(0,0,-VINT(6),0D0,0D0,0D0,0D0)
+ S=P(1,5)**2+P(2,5)**2+2D0*(P(1,4)*P(2,4)-P(1,3)*P(2,3))
+
+C...Set up kinematics for events with user-defined four-vectors.
+ ELSEIF(MINT(111).EQ.4) THEN
+ PMS1=P(1,4)**2-P(1,1)**2-P(1,2)**2-P(1,3)**2
+ P(1,5)=SIGN(SQRT(ABS(PMS1)),PMS1)
+ PMS2=P(2,4)**2-P(2,1)**2-P(2,2)**2-P(2,3)**2
+ P(2,5)=SIGN(SQRT(ABS(PMS2)),PMS2)
+ DO 130 J=1,3
+ VINT(7+J)=(P(1,J)+P(2,J))/(P(1,4)+P(2,4))
+ 130 CONTINUE
+ CALL PYROBO(0,0,0D0,0D0,-VINT(8),-VINT(9),-VINT(10))
+ VINT(7)=PYANGL(P(1,1),P(1,2))
+ CALL PYROBO(0,0,0D0,-VINT(7),0D0,0D0,0D0)
+ VINT(6)=PYANGL(P(1,3),P(1,1))
+ CALL PYROBO(0,0,-VINT(6),0D0,0D0,0D0,0D0)
+ S=(P(1,4)+P(2,4))**2
+
+C...Set up kinematics for events with user-defined five-vectors.
+ ELSEIF(MINT(111).EQ.5) THEN
+ DO 140 J=1,3
+ VINT(7+J)=(P(1,J)+P(2,J))/(P(1,4)+P(2,4))
+ 140 CONTINUE
+ CALL PYROBO(0,0,0D0,0D0,-VINT(8),-VINT(9),-VINT(10))
+ VINT(7)=PYANGL(P(1,1),P(1,2))
+ CALL PYROBO(0,0,0D0,-VINT(7),0D0,0D0,0D0)
+ VINT(6)=PYANGL(P(1,3),P(1,1))
+ CALL PYROBO(0,0,-VINT(6),0D0,0D0,0D0,0D0)
+ S=(P(1,4)+P(2,4))**2
+
+C...Set up kinematics for events with external user processes.
+ ELSEIF(MINT(111).GE.11) THEN
+ P(1,5)=VINT(3)
+ P(2,5)=VINT(4)
+ IF(MINT(141).NE.0) P(1,5)=VINT(303)
+ IF(MINT(142).NE.0) P(2,5)=VINT(304)
+ P(1,1)=0D0
+ P(1,2)=0D0
+ P(2,1)=0D0
+ P(2,2)=0D0
+ P(1,3)=SQRT(MAX(0D0,EBMUP(1)**2-P(1,5)**2))
+ P(2,3)=-SQRT(MAX(0D0,EBMUP(2)**2-P(2,5)**2))
+ P(1,4)=EBMUP(1)
+ P(2,4)=EBMUP(2)
+ VINT(10)=(P(1,3)+P(2,3))/(P(1,4)+P(2,4))
+ CALL PYROBO(0,0,0D0,0D0,0D0,0D0,-VINT(10))
+ S=(P(1,4)+P(2,4))**2
+ ENDIF
+
+C...Return or error for too low CM energy.
+ IF(MODKI.EQ.1.AND.S.LT.PARP(2)**2) THEN
+ IF(MSTP(172).LE.1) THEN
+ CALL PYERRM(23,
+ & '(PYINKI:) too low invariant mass in this event')
+ ELSE
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ ENDIF
+
+C...Save information on incoming particles.
+ VINT(1)=SQRT(S)
+ VINT(2)=S
+ IF(MINT(111).GE.4) THEN
+ IF(MINT(141).EQ.0) THEN
+ VINT(3)=P(1,5)
+ IF(MINT(11).EQ.22.AND.P(1,5).LT.0) VINT(307)=P(1,5)**2
+ ELSE
+ VINT(303)=P(1,5)
+ ENDIF
+ IF(MINT(142).EQ.0) THEN
+ VINT(4)=P(2,5)
+ IF(MINT(12).EQ.22.AND.P(2,5).LT.0) VINT(308)=P(2,5)**2
+ ELSE
+ VINT(304)=P(2,5)
+ ENDIF
+ ENDIF
+ VINT(5)=P(1,3)
+ IF(MODKI.EQ.0) VINT(289)=S
+ DO 150 J=1,5
+ V(1,J)=0D0
+ V(2,J)=0D0
+ VINT(290+J)=P(1,J)
+ VINT(295+J)=P(2,J)
+ 150 CONTINUE
+
+C...Store pT cut-off and related constants to be used in generation.
+ IF(MODKI.EQ.0) VINT(285)=CKIN(3)
+ IF(MSTP(82).LE.1) THEN
+ PTMN=PARP(81)*(VINT(1)/PARP(89))**PARP(90)
+ ELSE
+ PTMN=PARP(82)*(VINT(1)/PARP(89))**PARP(90)
+ ENDIF
+ VINT(149)=4D0*PTMN**2/S
+ VINT(154)=PTMN
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYINPR
+C...Selects partonic subprocesses to be included in the simulation.
+
+ SUBROUTINE PYINPR
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...User process initialization commonblock.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ SAVE /HEPRUP/
+
+C...Commonblocks and character variables.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT6/PROC(0:500)
+ CHARACTER PROC*28
+ SAVE /PYDAT1/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,/PYINT2/,
+ &/PYINT6/
+ CHARACTER CHIPR*10
+
+C...Reset processes to be included.
+ IF(MSEL.NE.0) THEN
+ DO 100 I=1,500
+ MSUB(I)=0
+ 100 CONTINUE
+ ENDIF
+
+C...Set running pTmin scale.
+ IF(MSTP(82).LE.1) THEN
+ PTMRUN=PARP(81)*(VINT(1)/PARP(89))**PARP(90)
+ ELSE
+ PTMRUN=PARP(82)*(VINT(1)/PARP(89))**PARP(90)
+ ENDIF
+
+C...Begin by assuming incoming photon to enter subprocess.
+ IF(MINT(11).EQ.22) MINT(15)=22
+ IF(MINT(12).EQ.22) MINT(16)=22
+
+C...For e-gamma with MSTP(14)=10 allow mixture of VMD and anomalous.
+ IF(MINT(121).EQ.2.AND.MSTP(14).EQ.10) THEN
+ MSUB(10)=1
+ MINT(123)=MINT(122)+1
+
+C...For gamma-p or gamma-gamma with MSTP(14) = 10, 20, 25 or 30
+C...allow mixture.
+C...Here also set a few parameters otherwise normally not touched.
+ ELSEIF(MINT(121).GT.1) THEN
+
+C...Parton distributions dampened at small Q2; go to low energies,
+C...alpha_s <1; no minimum pT cut-off a priori.
+ IF(MSTP(18).EQ.2) THEN
+ MSTP(57)=3
+ PARP(2)=2D0
+ PARU(115)=1D0
+ CKIN(5)=0.2D0
+ CKIN(6)=0.2D0
+ ENDIF
+
+C...Define pT cut-off parameters and whether run involves low-pT.
+ PTMVMD=PTMRUN
+ VINT(154)=PTMVMD
+ PTMDIR=PTMVMD
+ IF(MSTP(18).EQ.2) PTMDIR=PARP(15)
+ PTMANO=PTMVMD
+ IF(MSTP(15).EQ.5) PTMANO=0.60D0+
+ & 0.125D0*LOG(1D0+0.10D0*VINT(1))**2
+ IPTL=1
+ IF(VINT(285).GT.MAX(PTMVMD,PTMDIR,PTMANO)) IPTL=0
+ IF(MSEL.EQ.2) IPTL=1
+
+C...Set up for p/gamma * gamma; real or virtual photons.
+ IF(MINT(121).EQ.3.OR.MINT(121).EQ.6.OR.(MINT(121).EQ.4.AND.
+ & MSTP(14).EQ.30)) THEN
+
+C...Set up for p/VMD * VMD.
+ IF(MINT(122).EQ.1) THEN
+ MINT(123)=2
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+
+C...Set up for p/VMD * direct gamma.
+ ELSEIF(MINT(122).EQ.2) THEN
+ MINT(123)=0
+ IF(MINT(121).EQ.6) MINT(123)=5
+ MSUB(131)=1
+ MSUB(132)=1
+ MSUB(135)=1
+ MSUB(136)=1
+ IF(IPTL.EQ.1) CKIN(3)=PTMDIR
+
+C...Set up for p/VMD * anomalous gamma.
+ ELSEIF(MINT(122).EQ.3) THEN
+ MINT(123)=3
+ IF(MINT(121).EQ.6) MINT(123)=7
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+
+C...Set up for DIS * p.
+ ELSEIF(MINT(122).EQ.4.AND.(IABS(MINT(11)).GT.100.OR.
+ & IABS(MINT(12)).GT.100)) THEN
+ MINT(123)=8
+ IF(IPTL.EQ.1) MSUB(99)=1
+
+C...Set up for direct * direct gamma (switch off leptons).
+ ELSEIF(MINT(122).EQ.4) THEN
+ MINT(123)=0
+ MSUB(137)=1
+ MSUB(138)=1
+ MSUB(139)=1
+ MSUB(140)=1
+ DO 110 II=MDCY(22,2),MDCY(22,2)+MDCY(22,3)-1
+ IF(IABS(KFDP(II,1)).GE.10) MDME(II,1)=MIN(0,MDME(II,1))
+ 110 CONTINUE
+ IF(IPTL.EQ.1) CKIN(3)=PTMDIR
+
+C...Set up for direct * anomalous gamma.
+ ELSEIF(MINT(122).EQ.5) THEN
+ MINT(123)=6
+ MSUB(131)=1
+ MSUB(132)=1
+ MSUB(135)=1
+ MSUB(136)=1
+ IF(IPTL.EQ.1) CKIN(3)=PTMANO
+
+C...Set up for anomalous * anomalous gamma.
+ ELSEIF(MINT(122).EQ.6) THEN
+ MINT(123)=3
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+ ENDIF
+
+C...Set up for gamma* * gamma*; virtual photons = dir, VMD, anom.
+ ELSEIF(MINT(121).EQ.9.OR.MINT(121).EQ.13) THEN
+
+C...Set up for direct * direct gamma (switch off leptons).
+ IF(MINT(122).EQ.1) THEN
+ MINT(123)=0
+ MSUB(137)=1
+ MSUB(138)=1
+ MSUB(139)=1
+ MSUB(140)=1
+ DO 120 II=MDCY(22,2),MDCY(22,2)+MDCY(22,3)-1
+ IF(IABS(KFDP(II,1)).GE.10) MDME(II,1)=MIN(0,MDME(II,1))
+ 120 CONTINUE
+ IF(IPTL.EQ.1) CKIN(3)=PTMDIR
+
+C...Set up for direct * VMD and VMD * direct gamma.
+ ELSEIF(MINT(122).EQ.2.OR.MINT(122).EQ.4) THEN
+ MINT(123)=5
+ MSUB(131)=1
+ MSUB(132)=1
+ MSUB(135)=1
+ MSUB(136)=1
+ IF(IPTL.EQ.1) CKIN(3)=PTMDIR
+
+C...Set up for direct * anomalous and anomalous * direct gamma.
+ ELSEIF(MINT(122).EQ.3.OR.MINT(122).EQ.7) THEN
+ MINT(123)=6
+ MSUB(131)=1
+ MSUB(132)=1
+ MSUB(135)=1
+ MSUB(136)=1
+ IF(IPTL.EQ.1) CKIN(3)=PTMANO
+
+C...Set up for VMD*VMD.
+ ELSEIF(MINT(122).EQ.5) THEN
+ MINT(123)=2
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+
+C...Set up for VMD * anomalous and anomalous * VMD gamma.
+ ELSEIF(MINT(122).EQ.6.OR.MINT(122).EQ.8) THEN
+ MINT(123)=7
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+
+C...Set up for anomalous * anomalous gamma.
+ ELSEIF(MINT(122).EQ.9) THEN
+ MINT(123)=3
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+
+C...Set up for DIS * VMD and VMD * DIS gamma.
+ ELSEIF(MINT(122).EQ.10.OR.MINT(122).EQ.12) THEN
+ MINT(123)=8
+ IF(IPTL.EQ.1) MSUB(99)=1
+
+C...Set up for DIS * anomalous and anomalous * DIS gamma.
+ ELSEIF(MINT(122).EQ.11.OR.MINT(122).EQ.13) THEN
+ MINT(123)=9
+ IF(IPTL.EQ.1) MSUB(99)=1
+ ENDIF
+
+C...Set up for gamma* * p; virtual photons = dir, res.
+ ELSEIF(MINT(121).EQ.2) THEN
+
+C...Set up for direct * p.
+ IF(MINT(122).EQ.1) THEN
+ MINT(123)=0
+ MSUB(131)=1
+ MSUB(132)=1
+ MSUB(135)=1
+ MSUB(136)=1
+ IF(IPTL.EQ.1) CKIN(3)=PTMDIR
+
+C...Set up for resolved * p.
+ ELSEIF(MINT(122).EQ.2) THEN
+ MINT(123)=1
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+ ENDIF
+
+C...Set up for gamma* * gamma*; virtual photons = dir, res.
+ ELSEIF(MINT(121).EQ.4) THEN
+
+C...Set up for direct * direct gamma (switch off leptons).
+ IF(MINT(122).EQ.1) THEN
+ MINT(123)=0
+ MSUB(137)=1
+ MSUB(138)=1
+ MSUB(139)=1
+ MSUB(140)=1
+ DO 130 II=MDCY(22,2),MDCY(22,2)+MDCY(22,3)-1
+ IF(IABS(KFDP(II,1)).GE.10) MDME(II,1)=MIN(0,MDME(II,1))
+ 130 CONTINUE
+ IF(IPTL.EQ.1) CKIN(3)=PTMDIR
+
+C...Set up for direct * resolved and resolved * direct gamma.
+ ELSEIF(MINT(122).EQ.2.OR.MINT(122).EQ.3) THEN
+ MINT(123)=5
+ MSUB(131)=1
+ MSUB(132)=1
+ MSUB(135)=1
+ MSUB(136)=1
+ IF(IPTL.EQ.1) CKIN(3)=PTMDIR
+
+C...Set up for resolved * resolved gamma.
+ ELSEIF(MINT(122).EQ.4) THEN
+ MINT(123)=2
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ IF(IPTL.EQ.1) MSUB(95)=1
+ IF(MSEL.EQ.2) THEN
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ ENDIF
+ IF(IPTL.EQ.1) CKIN(3)=0D0
+ ENDIF
+
+C...End of special set up for gamma-p and gamma-gamma.
+ ENDIF
+ CKIN(1)=2D0*CKIN(3)
+ ENDIF
+
+C...Flavour information for individual beams.
+ DO 140 I=1,2
+ MINT(40+I)=1
+ IF(MINT(123).GE.1.AND.MINT(10+I).EQ.22) MINT(40+I)=2
+ IF(IABS(MINT(10+I)).GT.100) MINT(40+I)=2
+ MINT(44+I)=MINT(40+I)
+ IF(MSTP(11).GE.1.AND.(IABS(MINT(10+I)).EQ.11.OR.
+ & IABS(MINT(10+I)).EQ.13.OR.IABS(MINT(10+I)).EQ.15)) MINT(44+I)=3
+ 140 CONTINUE
+
+C...If two real gammas, whereof one direct, pick the first.
+C...For two virtual photons, keep requested order.
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22) THEN
+ IF(MSTP(14).LE.10.AND.MINT(123).GE.4.AND.MINT(123).LE.6) THEN
+ MINT(41)=1
+ MINT(45)=1
+ ELSEIF(MSTP(14).EQ.12.OR.MSTP(14).EQ.13.OR.MSTP(14).EQ.22.OR.
+ & MSTP(14).EQ.26.OR.MSTP(14).EQ.27) THEN
+ MINT(41)=1
+ MINT(45)=1
+ ELSEIF(MSTP(14).EQ.14.OR.MSTP(14).EQ.17.OR.MSTP(14).EQ.23.OR.
+ & MSTP(14).EQ.28.OR.MSTP(14).EQ.29) THEN
+ MINT(42)=1
+ MINT(46)=1
+ ELSEIF((MSTP(14).EQ.20.OR.MSTP(14).EQ.30).AND.(MINT(122).EQ.2
+ & .OR.MINT(122).EQ.3.OR.MINT(122).EQ.10.OR.MINT(122).EQ.11)) THEN
+ MINT(41)=1
+ MINT(45)=1
+ ELSEIF((MSTP(14).EQ.20.OR.MSTP(14).EQ.30).AND.(MINT(122).EQ.4
+ & .OR.MINT(122).EQ.7.OR.MINT(122).EQ.12.OR.MINT(122).EQ.13)) THEN
+ MINT(42)=1
+ MINT(46)=1
+ ELSEIF(MSTP(14).EQ.25.AND.MINT(122).EQ.2) THEN
+ MINT(41)=1
+ MINT(45)=1
+ ELSEIF(MSTP(14).EQ.25.AND.MINT(122).EQ.3) THEN
+ MINT(42)=1
+ MINT(46)=1
+ ENDIF
+ ELSEIF(MINT(11).EQ.22.OR.MINT(12).EQ.22) THEN
+ IF(MSTP(14).EQ.26.OR.MSTP(14).EQ.28.OR.MINT(122).EQ.4) THEN
+ IF(MINT(11).EQ.22) THEN
+ MINT(41)=1
+ MINT(45)=1
+ ELSE
+ MINT(42)=1
+ MINT(46)=1
+ ENDIF
+ ENDIF
+ IF(MINT(123).GE.4.AND.MINT(123).LE.7) CALL PYERRM(26,
+ & '(PYINPR:) unallowed MSTP(14) code for single photon')
+ ENDIF
+
+C...Flavour information on combination of incoming particles.
+ MINT(43)=2*MINT(41)+MINT(42)-2
+ MINT(44)=MINT(43)
+ IF(MINT(123).LE.0) THEN
+ IF(MINT(11).EQ.22) MINT(43)=MINT(43)+2
+ IF(MINT(12).EQ.22) MINT(43)=MINT(43)+1
+ ELSEIF(MINT(123).LE.3) THEN
+ IF(MINT(11).EQ.22) MINT(44)=MINT(44)-2
+ IF(MINT(12).EQ.22) MINT(44)=MINT(44)-1
+ ELSEIF(MINT(11).EQ.22.AND.MINT(12).EQ.22) THEN
+ MINT(43)=4
+ MINT(44)=1
+ ENDIF
+ MINT(47)=2*MIN(2,MINT(45))+MIN(2,MINT(46))-2
+ IF(MIN(MINT(45),MINT(46)).EQ.3) MINT(47)=5
+ IF(MINT(45).EQ.1.AND.MINT(46).EQ.3) MINT(47)=6
+ IF(MINT(45).EQ.3.AND.MINT(46).EQ.1) MINT(47)=7
+ MINT(50)=0
+ IF(MINT(41).EQ.2.AND.MINT(42).EQ.2.AND.MINT(111).NE.12) MINT(50)=1
+ MINT(107)=0
+ MINT(108)=0
+ IF(MINT(121).EQ.9.OR.MINT(121).EQ.13) THEN
+ IF((MINT(122).GE.4.AND.MINT(122).LE.6).OR.MINT(122).EQ.12)
+ & MINT(107)=2
+ IF((MINT(122).GE.7.AND.MINT(122).LE.9).OR.MINT(122).EQ.13)
+ & MINT(107)=3
+ IF(MINT(122).EQ.10.OR.MINT(122).EQ.11) MINT(107)=4
+ IF(MINT(122).EQ.2.OR.MINT(122).EQ.5.OR.MINT(122).EQ.8.OR.
+ & MINT(122).EQ.10) MINT(108)=2
+ IF(MINT(122).EQ.3.OR.MINT(122).EQ.6.OR.MINT(122).EQ.9.OR.
+ & MINT(122).EQ.11) MINT(108)=3
+ IF(MINT(122).EQ.12.OR.MINT(122).EQ.13) MINT(108)=4
+ ELSEIF(MINT(121).EQ.4.AND.MSTP(14).EQ.25) THEN
+ IF(MINT(122).GE.3) MINT(107)=1
+ IF(MINT(122).EQ.2.OR.MINT(122).EQ.4) MINT(108)=1
+ ELSEIF(MINT(121).EQ.2) THEN
+ IF(MINT(122).EQ.2.AND.MINT(11).EQ.22) MINT(107)=1
+ IF(MINT(122).EQ.2.AND.MINT(12).EQ.22) MINT(108)=1
+ ELSE
+ IF(MINT(11).EQ.22) THEN
+ MINT(107)=MINT(123)
+ IF(MINT(123).GE.4) MINT(107)=0
+ IF(MINT(123).EQ.7) MINT(107)=2
+ IF(MSTP(14).EQ.26.OR.MSTP(14).EQ.27) MINT(107)=4
+ IF(MSTP(14).EQ.28) MINT(107)=2
+ IF(MSTP(14).EQ.29) MINT(107)=3
+ IF(MSTP(14).EQ.30.AND.MINT(121).EQ.4.AND.MINT(122).EQ.4)
+ & MINT(107)=4
+ ENDIF
+ IF(MINT(12).EQ.22) THEN
+ MINT(108)=MINT(123)
+ IF(MINT(123).GE.4) MINT(108)=MINT(123)-3
+ IF(MINT(123).EQ.7) MINT(108)=3
+ IF(MSTP(14).EQ.26) MINT(108)=2
+ IF(MSTP(14).EQ.27) MINT(108)=3
+ IF(MSTP(14).EQ.28.OR.MSTP(14).EQ.29) MINT(108)=4
+ IF(MSTP(14).EQ.30.AND.MINT(121).EQ.4.AND.MINT(122).EQ.4)
+ & MINT(108)=4
+ ENDIF
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22.AND.(MSTP(14).EQ.14.OR.
+ & MSTP(14).EQ.17.OR.MSTP(14).EQ.18.OR.MSTP(14).EQ.23)) THEN
+ MINTTP=MINT(107)
+ MINT(107)=MINT(108)
+ MINT(108)=MINTTP
+ ENDIF
+ ENDIF
+ IF(MINT(15).EQ.22.AND.MINT(41).EQ.2) MINT(15)=0
+ IF(MINT(16).EQ.22.AND.MINT(42).EQ.2) MINT(16)=0
+
+C...Select default processes according to incoming beams
+C...(already done for gamma-p and gamma-gamma with
+C...MSTP(14) = 10, 20, 25 or 30).
+ IF(MINT(121).GT.1) THEN
+ ELSEIF(MSEL.EQ.1.OR.MSEL.EQ.2) THEN
+
+ IF(MINT(43).EQ.1) THEN
+C...Lepton + lepton -> gamma/Z0 or W.
+ IF(MINT(11)+MINT(12).EQ.0) MSUB(1)=1
+ IF(MINT(11)+MINT(12).NE.0) MSUB(2)=1
+
+ ELSEIF(MINT(43).LE.3.AND.MINT(123).EQ.0.AND.
+ & (MINT(11).EQ.22.OR.MINT(12).EQ.22)) THEN
+C...Unresolved photon + lepton: Compton scattering.
+ MSUB(133)=1
+ MSUB(134)=1
+
+ ELSEIF((MINT(123).EQ.8.OR.MINT(123).EQ.9).AND.(MINT(11).EQ.22
+ & .OR.MINT(12).EQ.22)) THEN
+C...DIS as pure gamma* + f -> f process.
+ MSUB(99)=1
+
+ ELSEIF(MINT(43).LE.3) THEN
+C...Lepton + hadron: deep inelastic scattering.
+ MSUB(10)=1
+
+ ELSEIF(MINT(123).EQ.0.AND.MINT(11).EQ.22.AND.
+ & MINT(12).EQ.22) THEN
+C...Two unresolved photons: fermion pair production,
+C...exclude lepton pairs.
+ DO 150 ISUB=137,140
+ MSUB(ISUB)=1
+ 150 CONTINUE
+ DO 160 II=MDCY(22,2),MDCY(22,2)+MDCY(22,3)-1
+ IF(IABS(KFDP(II,1)).GE.10) MDME(II,1)=MIN(0,MDME(II,1))
+ 160 CONTINUE
+ PTMDIR=PTMRUN
+ IF(MSTP(18).EQ.2) PTMDIR=PARP(15)
+ IF(CKIN(3).LT.PTMRUN.OR.MSEL.EQ.2) CKIN(3)=PTMDIR
+ CKIN(1)=MAX(CKIN(1),2D0*CKIN(3))
+
+ ELSEIF((MINT(123).EQ.0.AND.(MINT(11).EQ.22.OR.MINT(12).EQ.22))
+ & .OR.(MINT(123).GE.4.AND.MINT(123).LE.6.AND.MINT(11).EQ.22.AND.
+ & MINT(12).EQ.22)) THEN
+C...Unresolved photon + hadron: photon-parton scattering.
+ DO 170 ISUB=131,136
+ MSUB(ISUB)=1
+ 170 CONTINUE
+
+ ELSEIF(MSEL.EQ.1) THEN
+C...High-pT QCD processes:
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ PTMN=PTMRUN
+ VINT(154)=PTMN
+ IF(CKIN(3).LT.PTMN) MSUB(95)=1
+ IF(MSUB(95).EQ.1.AND.MINT(50).EQ.0) MSUB(95)=0
+
+ ELSE
+C...All QCD processes:
+ MSUB(11)=1
+ MSUB(12)=1
+ MSUB(13)=1
+ MSUB(28)=1
+ MSUB(53)=1
+ MSUB(68)=1
+ MSUB(91)=1
+ MSUB(92)=1
+ MSUB(93)=1
+ MSUB(94)=1
+ MSUB(95)=1
+ ENDIF
+
+ ELSEIF(MSEL.GE.4.AND.MSEL.LE.8) THEN
+C...Heavy quark production.
+ MSUB(81)=1
+ MSUB(82)=1
+ MSUB(84)=1
+ DO 180 J=1,MIN(8,MDCY(21,3))
+ MDME(MDCY(21,2)+J-1,1)=0
+ 180 CONTINUE
+ MDME(MDCY(21,2)+MSEL-1,1)=1
+ MSUB(85)=1
+ DO 190 J=1,MIN(12,MDCY(22,3))
+ MDME(MDCY(22,2)+J-1,1)=0
+ 190 CONTINUE
+ MDME(MDCY(22,2)+MSEL-1,1)=1
+
+ ELSEIF(MSEL.EQ.10) THEN
+C...Prompt photon production:
+ MSUB(14)=1
+ MSUB(18)=1
+ MSUB(29)=1
+
+ ELSEIF(MSEL.EQ.11) THEN
+C...Z0/gamma* production:
+ MSUB(1)=1
+
+ ELSEIF(MSEL.EQ.12) THEN
+C...W+/- production:
+ MSUB(2)=1
+
+ ELSEIF(MSEL.EQ.13) THEN
+C...Z0 + jet:
+ MSUB(15)=1
+ MSUB(30)=1
+
+ ELSEIF(MSEL.EQ.14) THEN
+C...W+/- + jet:
+ MSUB(16)=1
+ MSUB(31)=1
+
+ ELSEIF(MSEL.EQ.15) THEN
+C...Z0 & W+/- pair production:
+ MSUB(19)=1
+ MSUB(20)=1
+ MSUB(22)=1
+ MSUB(23)=1
+ MSUB(25)=1
+
+ ELSEIF(MSEL.EQ.16) THEN
+C...h0 production:
+ MSUB(3)=1
+ MSUB(102)=1
+ MSUB(103)=1
+ MSUB(123)=1
+ MSUB(124)=1
+
+ ELSEIF(MSEL.EQ.17) THEN
+C...h0 & Z0 or W+/- pair production:
+ MSUB(24)=1
+ MSUB(26)=1
+
+ ELSEIF(MSEL.EQ.18) THEN
+C...h0 production; interesting processes in e+e-.
+ MSUB(24)=1
+ MSUB(103)=1
+ MSUB(123)=1
+ MSUB(124)=1
+
+ ELSEIF(MSEL.EQ.19) THEN
+C...h0, H0 and A0 production; interesting processes in e+e-.
+ MSUB(24)=1
+ MSUB(103)=1
+ MSUB(123)=1
+ MSUB(124)=1
+ MSUB(153)=1
+ MSUB(171)=1
+ MSUB(173)=1
+ MSUB(174)=1
+ MSUB(158)=1
+ MSUB(176)=1
+ MSUB(178)=1
+ MSUB(179)=1
+
+ ELSEIF(MSEL.EQ.21) THEN
+C...Z'0 production:
+ MSUB(141)=1
+
+ ELSEIF(MSEL.EQ.22) THEN
+C...W'+/- production:
+ MSUB(142)=1
+
+ ELSEIF(MSEL.EQ.23) THEN
+C...H+/- production:
+ MSUB(143)=1
+
+ ELSEIF(MSEL.EQ.24) THEN
+C...R production:
+ MSUB(144)=1
+
+ ELSEIF(MSEL.EQ.25) THEN
+C...LQ (leptoquark) production.
+ MSUB(145)=1
+ MSUB(162)=1
+ MSUB(163)=1
+ MSUB(164)=1
+
+ ELSEIF(MSEL.GE.35.AND.MSEL.LE.38) THEN
+C...Production of one heavy quark (W exchange):
+ MSUB(83)=1
+ DO 200 J=1,MIN(8,MDCY(21,3))
+ MDME(MDCY(21,2)+J-1,1)=0
+ 200 CONTINUE
+ MDME(MDCY(21,2)+MSEL-31,1)=1
+
+CMRENNA++Define SUSY alternatives.
+ ELSEIF(MSEL.EQ.39) THEN
+C...Turn on all SUSY processes.
+ IF(MINT(43).EQ.4) THEN
+C...Hadron-hadron processes.
+ DO 210 I=201,301
+ IF(ISET(I).GE.0) MSUB(I)=1
+ 210 CONTINUE
+ ELSEIF(MINT(43).EQ.1) THEN
+C...Lepton-lepton processes: QED production of squarks.
+ DO 220 I=201,214
+ MSUB(I)=1
+ 220 CONTINUE
+ MSUB(210)=0
+ MSUB(211)=0
+ MSUB(212)=0
+ DO 230 I=216,228
+ MSUB(I)=1
+ 230 CONTINUE
+ DO 240 I=261,263
+ MSUB(I)=1
+ 240 CONTINUE
+ MSUB(277)=1
+ MSUB(278)=1
+ ENDIF
+
+ ELSEIF(MSEL.EQ.40) THEN
+C...Gluinos and squarks.
+ IF(MINT(43).EQ.4) THEN
+ MSUB(243)=1
+ MSUB(244)=1
+ MSUB(258)=1
+ MSUB(259)=1
+ MSUB(261)=1
+ MSUB(262)=1
+ MSUB(264)=1
+ MSUB(265)=1
+ DO 250 I=271,296
+ MSUB(I)=1
+ 250 CONTINUE
+ ELSEIF(MINT(43).EQ.1) THEN
+ MSUB(277)=1
+ MSUB(278)=1
+ ENDIF
+
+ ELSEIF(MSEL.EQ.41) THEN
+C...Stop production.
+ MSUB(261)=1
+ MSUB(262)=1
+ MSUB(263)=1
+ IF(MINT(43).EQ.4) THEN
+ MSUB(264)=1
+ MSUB(265)=1
+ ENDIF
+
+ ELSEIF(MSEL.EQ.42) THEN
+C...Slepton production.
+ DO 260 I=201,214
+ MSUB(I)=1
+ 260 CONTINUE
+ IF(MINT(43).NE.4) THEN
+ MSUB(210)=0
+ MSUB(211)=0
+ MSUB(212)=0
+ ENDIF
+
+ ELSEIF(MSEL.EQ.43) THEN
+C...Neutralino/Chargino + Gluino/Squark.
+ IF(MINT(43).EQ.4) THEN
+ DO 270 I=237,242
+ MSUB(I)=1
+ 270 CONTINUE
+ DO 280 I=246,254
+ MSUB(I)=1
+ 280 CONTINUE
+ MSUB(256)=1
+ ENDIF
+
+ ELSEIF(MSEL.EQ.44) THEN
+C...Neutralino/Chargino pair production.
+ IF(MINT(43).EQ.4) THEN
+ DO 290 I=216,236
+ MSUB(I)=1
+ 290 CONTINUE
+ ELSEIF(MINT(43).EQ.1) THEN
+ DO 300 I=216,228
+ MSUB(I)=1
+ 300 CONTINUE
+ ENDIF
+
+ ELSEIF(MSEL.EQ.45) THEN
+C...Sbottom production.
+ MSUB(287)=1
+ MSUB(288)=1
+ IF(MINT(43).EQ.4) THEN
+ DO 310 I=281,296
+ MSUB(I)=1
+ 310 CONTINUE
+ ENDIF
+
+ ELSEIF(MSEL.EQ.50) THEN
+C...Pair production of technipions and gauge bosons.
+ DO 320 I=361,368
+ MSUB(I)=1
+ 320 CONTINUE
+ IF(MINT(43).EQ.4) THEN
+ DO 330 I=370,377
+ MSUB(I)=1
+ 330 CONTINUE
+ ENDIF
+
+ ELSEIF(MSEL.EQ.51) THEN
+C...QCD 2 -> 2 processes with compositeness/technicolor modifications.
+ DO 340 I=381,386
+ MSUB(I)=1
+ 340 CONTINUE
+
+ ELSEIF(MSEL.EQ.61) THEN
+C...Charmonium production in colour octet model, with recoiling parton.
+ DO 342 I=421,439
+ MSUB(I)=1
+ 342 CONTINUE
+
+ ELSEIF(MSEL.EQ.62) THEN
+C...Bottomonium production in colour octet model, with recoiling parton.
+ DO 344 I=461,479
+ MSUB(I)=1
+ 344 CONTINUE
+
+ ELSEIF(MSEL.EQ.63) THEN
+C...Charmonium and bottomonium production in colour octet model.
+ DO 346 I=421,439
+ MSUB(I)=1
+ MSUB(I+40)=1
+ 346 CONTINUE
+ ENDIF
+
+C...Find heaviest new quark flavour allowed in processes 81-84.
+ KFLQM=1
+ DO 350 I=1,MIN(8,MDCY(21,3))
+ IDC=I+MDCY(21,2)-1
+ IF(MDME(IDC,1).LE.0) GOTO 350
+ KFLQM=I
+ 350 CONTINUE
+ IF(MSTP(7).GE.1.AND.MSTP(7).LE.8.AND.(MSEL.LE.3.OR.MSEL.GE.9))
+ &KFLQM=MSTP(7)
+ MINT(55)=KFLQM
+ KFPR(81,1)=KFLQM
+ KFPR(81,2)=KFLQM
+ KFPR(82,1)=KFLQM
+ KFPR(82,2)=KFLQM
+ KFPR(83,1)=KFLQM
+ KFPR(84,1)=KFLQM
+ KFPR(84,2)=KFLQM
+
+C...Find heaviest new fermion flavour allowed in process 85.
+ KFLFM=1
+ DO 360 I=1,MIN(12,MDCY(22,3))
+ IDC=I+MDCY(22,2)-1
+ IF(MDME(IDC,1).LE.0) GOTO 360
+ KFLFM=KFDP(IDC,1)
+ 360 CONTINUE
+ IF(((MSTP(7).GE.1.AND.MSTP(7).LE.8).OR.(MSTP(7).GE.11.AND.
+ &MSTP(7).LE.18)).AND.(MSEL.LE.3.OR.MSEL.GE.9)) KFLFM=MSTP(7)
+ MINT(56)=KFLFM
+ KFPR(85,1)=KFLFM
+ KFPR(85,2)=KFLFM
+
+C...Import relevant information on external user processes.
+ IF(MINT(111).GE.11) THEN
+ IPYPR=0
+ DO 390 IUP=1,NPRUP
+C...Find next empty PYTHIA process number slot and enable it.
+ 370 IPYPR=IPYPR+1
+ IF(IPYPR.GT.500) CALL PYERRM(26,
+ & '(PYINPR.) no more empty slots for user processes')
+ IF(ISET(IPYPR).GE.0.AND.ISET(IPYPR).LE.9) GOTO 370
+ IF(IPYPR.GE.91.AND.IPYPR.LE.100) GOTO 370
+ ISET(IPYPR)=11
+C...Overwrite KFPR with references back to process number and ID.
+ KFPR(IPYPR,1)=IUP
+ KFPR(IPYPR,2)=LPRUP(IUP)
+C...Process title.
+ WRITE(CHIPR,'(I10)') LPRUP(IUP)
+ ICHIN=1
+ DO 380 ICH=1,9
+ IF(CHIPR(ICH:ICH).EQ.' ') ICHIN=ICH+1
+ 380 CONTINUE
+ PROC(IPYPR)='User process '//CHIPR(ICHIN:10)//' '
+C...Switch on process.
+ MSUB(IPYPR)=1
+ 390 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYXTOT
+C...Parametrizes total, elastic and diffractive cross-sections
+C...for different energies and beams. Donnachie-Landshoff for
+C...total and Schuler-Sjostrand for elastic and diffractive.
+C...Process code IPROC:
+C...= 1 : p + p;
+C...= 2 : pbar + p;
+C...= 3 : pi+ + p;
+C...= 4 : pi- + p;
+C...= 5 : pi0 + p;
+C...= 6 : phi + p;
+C...= 7 : J/psi + p;
+C...= 11 : rho + rho;
+C...= 12 : rho + phi;
+C...= 13 : rho + J/psi;
+C...= 14 : phi + phi;
+C...= 15 : phi + J/psi;
+C...= 16 : J/psi + J/psi;
+C...= 21 : gamma + p (DL);
+C...= 22 : gamma + p (VDM).
+C...= 23 : gamma + pi (DL);
+C...= 24 : gamma + pi (VDM);
+C...= 25 : gamma + gamma (DL);
+C...= 26 : gamma + gamma (VDM).
+
+ SUBROUTINE PYXTOT
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,/PYINT5/,/PYINT7/
+C...Local arrays.
+ DIMENSION NPROC(30),XPAR(30),YPAR(30),IHADA(20),IHADB(20),
+ &PMHAD(4),BHAD(4),BETP(4),IFITSD(20),IFITDD(20),CEFFS(10,8),
+ &CEFFD(10,9),SIGTMP(6,0:5)
+
+C...Common constants.
+ DATA EPS/0.0808D0/, ETA/-0.4525D0/, ALP/0.25D0/, CRES/2D0/,
+ &PMRC/1.062D0/, SMP/0.880D0/, FACEL/0.0511D0/, FACSD/0.0336D0/,
+ &FACDD/0.0084D0/
+
+C...Number of multiple processes to be evaluated (= 0 : undefined).
+ DATA NPROC/7*1,3*0,6*1,4*0,4*3,2*6,4*0/
+C...X and Y parameters of sigmatot = X * s**epsilon + Y * s**(-eta).
+ DATA XPAR/2*21.70D0,3*13.63D0,10.01D0,0.970D0,3*0D0,
+ &8.56D0,6.29D0,0.609D0,4.62D0,0.447D0,0.0434D0,4*0D0,
+ &0.0677D0,0.0534D0,0.0425D0,0.0335D0,2.11D-4,1.31D-4,4*0D0/
+ DATA YPAR/
+ &56.08D0,98.39D0,27.56D0,36.02D0,31.79D0,-1.51D0,-0.146D0,3*0D0,
+ &13.08D0,-0.62D0,-0.060D0,0.030D0,-0.0028D0,0.00028D0,4*0D0,
+ &0.129D0,0.115D0,0.081D0,0.072D0,2.15D-4,1.70D-4,4*0D0/
+
+C...Beam and target hadron class:
+C...= 1 : p/n ; = 2 : pi/rho/omega; = 3 : phi; = 4 : J/psi.
+ DATA IHADA/2*1,3*2,3,4,3*0,3*2,2*3,4,4*0/
+ DATA IHADB/7*1,3*0,2,3,4,3,2*4,4*0/
+C...Characteristic class masses, slope parameters, beta = sqrt(X).
+ DATA PMHAD/0.938D0,0.770D0,1.020D0,3.097D0/
+ DATA BHAD/2.3D0,1.4D0,1.4D0,0.23D0/
+ DATA BETP/4.658D0,2.926D0,2.149D0,0.208D0/
+
+C...Fitting constants used in parametrizations of diffractive results.
+ DATA IFITSD/2*1,3*2,3,4,3*0,5,6,7,8,9,10,4*0/
+ DATA IFITDD/2*1,3*2,3,4,3*0,5,6,7,8,9,10,4*0/
+ DATA ((CEFFS(J1,J2),J2=1,8),J1=1,10)/
+ &0.213D0, 0.0D0, -0.47D0, 150D0, 0.213D0, 0.0D0, -0.47D0, 150D0,
+ &0.213D0, 0.0D0, -0.47D0, 150D0, 0.267D0, 0.0D0, -0.47D0, 100D0,
+ &0.213D0, 0.0D0, -0.47D0, 150D0, 0.232D0, 0.0D0, -0.47D0, 110D0,
+ &0.213D0, 7.0D0, -0.55D0, 800D0, 0.115D0, 0.0D0, -0.47D0, 110D0,
+ &0.267D0, 0.0D0, -0.46D0, 75D0, 0.267D0, 0.0D0, -0.46D0, 75D0,
+ &0.232D0, 0.0D0, -0.46D0, 85D0, 0.267D0, 0.0D0, -0.48D0, 100D0,
+ &0.115D0, 0.0D0, -0.50D0, 90D0, 0.267D0, 6.0D0, -0.56D0, 420D0,
+ &0.232D0, 0.0D0, -0.48D0, 110D0, 0.232D0, 0.0D0, -0.48D0, 110D0,
+ &0.115D0, 0.0D0, -0.52D0, 120D0, 0.232D0, 6.0D0, -0.56D0, 470D0,
+ &0.115D0, 5.5D0, -0.58D0, 570D0, 0.115D0, 5.5D0, -0.58D0, 570D0/
+ DATA ((CEFFD(J1,J2),J2=1,9),J1=1,10)/
+ &3.11D0, -7.34D0, 9.71D0, 0.068D0, -0.42D0, 1.31D0,
+ &-1.37D0, 35.0D0, 118D0, 3.11D0, -7.10D0, 10.6D0,
+ &0.073D0, -0.41D0, 1.17D0, -1.41D0, 31.6D0, 95D0,
+ &3.12D0, -7.43D0, 9.21D0, 0.067D0, -0.44D0, 1.41D0,
+ &-1.35D0, 36.5D0, 132D0, 3.13D0, -8.18D0, -4.20D0,
+ &0.056D0, -0.71D0, 3.12D0, -1.12D0, 55.2D0, 1298D0,
+ &3.11D0, -6.90D0, 11.4D0, 0.078D0, -0.40D0, 1.05D0,
+ &-1.40D0, 28.4D0, 78D0, 3.11D0, -7.13D0, 10.0D0,
+ &0.071D0, -0.41D0, 1.23D0, -1.34D0, 33.1D0, 105D0,
+ &3.12D0, -7.90D0, -1.49D0, 0.054D0, -0.64D0, 2.72D0,
+ &-1.13D0, 53.1D0, 995D0, 3.11D0, -7.39D0, 8.22D0,
+ &0.065D0, -0.44D0, 1.45D0, -1.36D0, 38.1D0, 148D0,
+ &3.18D0, -8.95D0, -3.37D0, 0.057D0, -0.76D0, 3.32D0,
+ &-1.12D0, 55.6D0, 1472D0, 4.18D0, -29.2D0, 56.2D0,
+ &0.074D0, -1.36D0, 6.67D0, -1.14D0, 116.2D0, 6532D0/
+
+C...Parameters. Combinations of the energy.
+ AEM=PARU(101)
+ PMTH=PARP(102)
+ S=VINT(2)
+ SRT=VINT(1)
+ SEPS=S**EPS
+ SETA=S**ETA
+ SLOG=LOG(S)
+
+C...Ratio of gamma/pi (for rescaling in parton distributions).
+ VINT(281)=(XPAR(22)*SEPS+YPAR(22)*SETA)/
+ &(XPAR(5)*SEPS+YPAR(5)*SETA)
+ VINT(317)=1D0
+ IF(MINT(50).NE.1) RETURN
+
+C...Order flavours of incoming particles: KF1 < KF2.
+ IF(IABS(MINT(11)).LE.IABS(MINT(12))) THEN
+ KF1=IABS(MINT(11))
+ KF2=IABS(MINT(12))
+ IORD=1
+ ELSE
+ KF1=IABS(MINT(12))
+ KF2=IABS(MINT(11))
+ IORD=2
+ ENDIF
+ ISGN12=ISIGN(1,MINT(11)*MINT(12))
+
+C...Find process number (for lookup tables).
+ IF(KF1.GT.1000) THEN
+ IPROC=1
+ IF(ISGN12.LT.0) IPROC=2
+ ELSEIF(KF1.GT.100.AND.KF2.GT.1000) THEN
+ IPROC=3
+ IF(ISGN12.LT.0) IPROC=4
+ IF(KF1.EQ.111) IPROC=5
+ ELSEIF(KF1.GT.100) THEN
+ IPROC=11
+ ELSEIF(KF2.GT.1000) THEN
+ IPROC=21
+ IF(MINT(123).EQ.2.OR.MINT(123).EQ.3) IPROC=22
+ ELSEIF(KF2.GT.100) THEN
+ IPROC=23
+ IF(MINT(123).EQ.2.OR.MINT(123).EQ.3) IPROC=24
+ ELSE
+ IPROC=25
+ IF(MINT(123).EQ.2.OR.MINT(123).EQ.3.OR.MINT(123).EQ.7) IPROC=26
+ ENDIF
+
+C... Number of multiple processes to be stored; beam/target side.
+ NPR=NPROC(IPROC)
+ MINT(101)=1
+ MINT(102)=1
+ IF(NPR.EQ.3) THEN
+ MINT(100+IORD)=4
+ ELSEIF(NPR.EQ.6) THEN
+ MINT(101)=4
+ MINT(102)=4
+ ENDIF
+ N1=0
+ IF(MINT(101).EQ.4) N1=4
+ N2=0
+ IF(MINT(102).EQ.4) N2=4
+
+C...Do not do any more for user-set or undefined cross-sections.
+ IF(MSTP(31).LE.0) RETURN
+ IF(NPR.EQ.0) CALL PYERRM(26,
+ &'(PYXTOT:) cross section for this process not yet implemented')
+
+C...Parameters. Combinations of the energy.
+ AEM=PARU(101)
+ PMTH=PARP(102)
+ S=VINT(2)
+ SRT=VINT(1)
+ SEPS=S**EPS
+ SETA=S**ETA
+ SLOG=LOG(S)
+
+C...Loop over multiple processes (for VDM).
+ DO 110 I=1,NPR
+ IF(NPR.EQ.1) THEN
+ IPR=IPROC
+ ELSEIF(NPR.EQ.3) THEN
+ IPR=I+4
+ IF(KF2.LT.1000) IPR=I+10
+ ELSEIF(NPR.EQ.6) THEN
+ IPR=I+10
+ ENDIF
+
+C...Evaluate hadron species, mass, slope contribution and fit number.
+ IHA=IHADA(IPR)
+ IHB=IHADB(IPR)
+ PMA=PMHAD(IHA)
+ PMB=PMHAD(IHB)
+ BHA=BHAD(IHA)
+ BHB=BHAD(IHB)
+ ISD=IFITSD(IPR)
+ IDD=IFITDD(IPR)
+
+C...Skip if energy too low relative to masses.
+ DO 100 J=0,5
+ SIGTMP(I,J)=0D0
+ 100 CONTINUE
+ IF(SRT.LT.PMA+PMB+PARP(104)) GOTO 110
+
+C...Total cross-section. Elastic slope parameter and cross-section.
+ SIGTMP(I,0)=XPAR(IPR)*SEPS+YPAR(IPR)*SETA
+ BEL=2D0*BHA+2D0*BHB+4D0*SEPS-4.2D0
+ SIGTMP(I,1)=FACEL*SIGTMP(I,0)**2/BEL
+
+C...Diffractive scattering A + B -> X + B.
+ BSD=2D0*BHB
+ SQML=(PMA+PMTH)**2
+ SQMU=S*CEFFS(ISD,1)+CEFFS(ISD,2)
+ SUM1=LOG((BSD+2D0*ALP*LOG(S/SQML))/
+ & (BSD+2D0*ALP*LOG(S/SQMU)))/(2D0*ALP)
+ BXB=CEFFS(ISD,3)+CEFFS(ISD,4)/S
+ SUM2=CRES*LOG(1D0+((PMA+PMRC)/(PMA+PMTH))**2)/
+ & (BSD+2D0*ALP*LOG(S/((PMA+PMTH)*(PMA+PMRC)))+BXB)
+ SIGTMP(I,2)=FACSD*XPAR(IPR)*BETP(IHB)*MAX(0D0,SUM1+SUM2)
+
+C...Diffractive scattering A + B -> A + X.
+ BSD=2D0*BHA
+ SQML=(PMB+PMTH)**2
+ SQMU=S*CEFFS(ISD,5)+CEFFS(ISD,6)
+ SUM1=LOG((BSD+2D0*ALP*LOG(S/SQML))/
+ & (BSD+2D0*ALP*LOG(S/SQMU)))/(2D0*ALP)
+ BAX=CEFFS(ISD,7)+CEFFS(ISD,8)/S
+ SUM2=CRES*LOG(1D0+((PMB+PMRC)/(PMB+PMTH))**2)/
+ & (BSD+2D0*ALP*LOG(S/((PMB+PMTH)*(PMB+PMRC)))+BAX)
+ SIGTMP(I,3)=FACSD*XPAR(IPR)*BETP(IHA)*MAX(0D0,SUM1+SUM2)
+
+C...Order single diffractive correctly.
+ IF(IORD.EQ.2) THEN
+ SIGSAV=SIGTMP(I,2)
+ SIGTMP(I,2)=SIGTMP(I,3)
+ SIGTMP(I,3)=SIGSAV
+ ENDIF
+
+C...Double diffractive scattering A + B -> X1 + X2.
+ YEFF=LOG(S*SMP/((PMA+PMTH)*(PMB+PMTH))**2)
+ DEFF=CEFFD(IDD,1)+CEFFD(IDD,2)/SLOG+CEFFD(IDD,3)/SLOG**2
+ SUM1=(DEFF+YEFF*(LOG(MAX(1D-10,YEFF/DEFF))-1D0))/(2D0*ALP)
+ IF(YEFF.LE.0) SUM1=0D0
+ SQMU=S*(CEFFD(IDD,4)+CEFFD(IDD,5)/SLOG+CEFFD(IDD,6)/SLOG**2)
+ SLUP=LOG(MAX(1.1D0,S/(ALP*(PMA+PMTH)**2*(PMB+PMTH)*(PMB+PMRC))))
+ SLDN=LOG(MAX(1.1D0,S/(ALP*SQMU*(PMB+PMTH)*(PMB+PMRC))))
+ SUM2=CRES*LOG(1D0+((PMB+PMRC)/(PMB+PMTH))**2)*LOG(SLUP/SLDN)/
+ & (2D0*ALP)
+ SLUP=LOG(MAX(1.1D0,S/(ALP*(PMB+PMTH)**2*(PMA+PMTH)*(PMA+PMRC))))
+ SLDN=LOG(MAX(1.1D0,S/(ALP*SQMU*(PMA+PMTH)*(PMA+PMRC))))
+ SUM3=CRES*LOG(1D0+((PMA+PMRC)/(PMA+PMTH))**2)*LOG(SLUP/SLDN)/
+ & (2D0*ALP)
+ BXX=CEFFD(IDD,7)+CEFFD(IDD,8)/SRT+CEFFD(IDD,9)/S
+ SLRR=LOG(S/(ALP*(PMA+PMTH)*(PMA+PMRC)*(PMB+PMTH)*(PMB+PMRC)))
+ SUM4=CRES**2*LOG(1D0+((PMA+PMRC)/(PMA+PMTH))**2)*
+ & LOG(1D0+((PMB+PMRC)/(PMB+PMTH))**2)/MAX(0.1D0,2D0*ALP*SLRR+BXX)
+ SIGTMP(I,4)=FACDD*XPAR(IPR)*MAX(0D0,SUM1+SUM2+SUM3+SUM4)
+
+C...Non-diffractive by unitarity.
+ SIGTMP(I,5)=SIGTMP(I,0)-SIGTMP(I,1)-SIGTMP(I,2)-SIGTMP(I,3)-
+ & SIGTMP(I,4)
+ 110 CONTINUE
+
+C...Put temporary results in output array: only one process.
+ IF(MINT(101).EQ.1.AND.MINT(102).EQ.1) THEN
+ DO 120 J=0,5
+ SIGT(0,0,J)=SIGTMP(1,J)
+ 120 CONTINUE
+
+C...Beam multiple processes.
+ ELSEIF(MINT(101).EQ.4.AND.MINT(102).EQ.1) THEN
+ IF(MINT(107).EQ.2) THEN
+ VINT(317)=(PMHAD(2)**2/(PMHAD(2)**2+VINT(307)))**2
+ ELSE
+ VINT(317)=16D0*PARP(15)**2*VINT(154)**2/
+ & ((4D0*PARP(15)**2+VINT(307))*(4D0*VINT(154)**2+VINT(307)))
+ ENDIF
+ IF(MSTP(20).GT.0) THEN
+ VINT(317)=VINT(317)*(VINT(2)/(VINT(2)+VINT(307)))**MSTP(20)
+ ENDIF
+ DO 140 I=1,4
+ IF(MINT(107).EQ.2) THEN
+ CONV=(AEM/PARP(160+I))*VINT(317)
+ ELSEIF(VINT(154).GT.PARP(15)) THEN
+ CONV=(AEM/PARU(1))*(KCHG(I,1)/3D0)**2*PARP(18)**2*
+ & (1D0/PARP(15)**2-1D0/VINT(154)**2)*VINT(317)
+ ELSE
+ CONV=0D0
+ ENDIF
+ I1=MAX(1,I-1)
+ DO 130 J=0,5
+ SIGT(I,0,J)=CONV*SIGTMP(I1,J)
+ 130 CONTINUE
+ 140 CONTINUE
+ DO 150 J=0,5
+ SIGT(0,0,J)=SIGT(1,0,J)+SIGT(2,0,J)+SIGT(3,0,J)+SIGT(4,0,J)
+ 150 CONTINUE
+
+C...Target multiple processes.
+ ELSEIF(MINT(101).EQ.1.AND.MINT(102).EQ.4) THEN
+ IF(MINT(108).EQ.2) THEN
+ VINT(317)=(PMHAD(2)**2/(PMHAD(2)**2+VINT(308)))**2
+ ELSE
+ VINT(317)=16D0*PARP(15)**2*VINT(154)**2/
+ & ((4D0*PARP(15)**2+VINT(308))*(4D0*VINT(154)**2+VINT(308)))
+ ENDIF
+ IF(MSTP(20).GT.0) THEN
+ VINT(317)=VINT(317)*(VINT(2)/(VINT(2)+VINT(308)))**MSTP(20)
+ ENDIF
+ DO 170 I=1,4
+ IF(MINT(108).EQ.2) THEN
+ CONV=(AEM/PARP(160+I))*VINT(317)
+ ELSEIF(VINT(154).GT.PARP(15)) THEN
+ CONV=(AEM/PARU(1))*(KCHG(I,1)/3D0)**2*PARP(18)**2*
+ & (1D0/PARP(15)**2-1D0/VINT(154)**2)*VINT(317)
+ ELSE
+ CONV=0D0
+ ENDIF
+ IV=MAX(1,I-1)
+ DO 160 J=0,5
+ SIGT(0,I,J)=CONV*SIGTMP(IV,J)
+ 160 CONTINUE
+ 170 CONTINUE
+ DO 180 J=0,5
+ SIGT(0,0,J)=SIGT(0,1,J)+SIGT(0,2,J)+SIGT(0,3,J)+SIGT(0,4,J)
+ 180 CONTINUE
+
+C...Both beam and target multiple processes.
+ ELSE
+ IF(MINT(107).EQ.2) THEN
+ VINT(317)=(PMHAD(2)**2/(PMHAD(2)**2+VINT(307)))**2
+ ELSE
+ VINT(317)=16D0*PARP(15)**2*VINT(154)**2/
+ & ((4D0*PARP(15)**2+VINT(307))*(4D0*VINT(154)**2+VINT(307)))
+ ENDIF
+ IF(MINT(108).EQ.2) THEN
+ VINT(317)=VINT(317)*(PMHAD(2)**2/(PMHAD(2)**2+VINT(308)))**2
+ ELSE
+ VINT(317)=VINT(317)*16D0*PARP(15)**2*VINT(154)**2/
+ & ((4D0*PARP(15)**2+VINT(308))*(4D0*VINT(154)**2+VINT(308)))
+ ENDIF
+ IF(MSTP(20).GT.0) THEN
+ VINT(317)=VINT(317)*(VINT(2)/(VINT(2)+VINT(307)+
+ & VINT(308)))**MSTP(20)
+ ENDIF
+ DO 210 I1=1,4
+ DO 200 I2=1,4
+ IF(MINT(107).EQ.2) THEN
+ CONV=(AEM/PARP(160+I1))*VINT(317)
+ ELSEIF(VINT(154).GT.PARP(15)) THEN
+ CONV=(AEM/PARU(1))*(KCHG(I1,1)/3D0)**2*PARP(18)**2*
+ & (1D0/PARP(15)**2-1D0/VINT(154)**2)*VINT(317)
+ ELSE
+ CONV=0D0
+ ENDIF
+ IF(MINT(108).EQ.2) THEN
+ CONV=CONV*(AEM/PARP(160+I2))
+ ELSEIF(VINT(154).GT.PARP(15)) THEN
+ CONV=CONV*(AEM/PARU(1))*(KCHG(I2,1)/3D0)**2*PARP(18)**2*
+ & (1D0/PARP(15)**2-1D0/VINT(154)**2)
+ ELSE
+ CONV=0D0
+ ENDIF
+ IF(I1.LE.2) THEN
+ IV=MAX(1,I2-1)
+ ELSEIF(I2.LE.2) THEN
+ IV=MAX(1,I1-1)
+ ELSEIF(I1.EQ.I2) THEN
+ IV=2*I1-2
+ ELSE
+ IV=5
+ ENDIF
+ DO 190 J=0,5
+ JV=J
+ IF(I2.GT.I1.AND.(J.EQ.2.OR.J.EQ.3)) JV=5-J
+ SIGT(I1,I2,J)=CONV*SIGTMP(IV,JV)
+ 190 CONTINUE
+ 200 CONTINUE
+ 210 CONTINUE
+ DO 230 J=0,5
+ DO 220 I=1,4
+ SIGT(I,0,J)=SIGT(I,1,J)+SIGT(I,2,J)+SIGT(I,3,J)+SIGT(I,4,J)
+ SIGT(0,I,J)=SIGT(1,I,J)+SIGT(2,I,J)+SIGT(3,I,J)+SIGT(4,I,J)
+ 220 CONTINUE
+ SIGT(0,0,J)=SIGT(1,0,J)+SIGT(2,0,J)+SIGT(3,0,J)+SIGT(4,0,J)
+ 230 CONTINUE
+ ENDIF
+
+C...Scale up uniformly for Donnachie-Landshoff parametrization.
+ IF(IPROC.EQ.21.OR.IPROC.EQ.23.OR.IPROC.EQ.25) THEN
+ RFAC=(XPAR(IPROC)*SEPS+YPAR(IPROC)*SETA)/SIGT(0,0,0)
+ DO 260 I1=0,N1
+ DO 250 I2=0,N2
+ DO 240 J=0,5
+ SIGT(I1,I2,J)=RFAC*SIGT(I1,I2,J)
+ 240 CONTINUE
+ 250 CONTINUE
+ 260 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMAXI
+C...Finds optimal set of coefficients for kinematical variable selection
+C...and the maximum of the part of the differential cross-section used
+C...in the event weighting.
+
+ SUBROUTINE PYMAXI
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+
+C...User process initialization commonblock.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ SAVE /HEPRUP/
+
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT6/PROC(0:500)
+ CHARACTER PROC*28
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ COMMON/PYTCCO/COEFX(194:380,2)
+ COMMON/TCPARA/IRES,JRES,XMAS(3),XWID(3),YMAS(2),YWID(2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT2/,/PYINT3/,/PYINT4/,/PYINT5/,/PYINT6/,/PYINT7/,/PYTCCO/,
+ &/PYTCSM/,/TCPARA/
+C...Local arrays, character variables and data.
+ LOGICAL IOK
+ CHARACTER CVAR(4)*4
+ DIMENSION NPTS(4),MVARPT(500,4),VINTPT(500,30),SIGSPT(500),
+ &NAREL(9),WTREL(9),WTMAT(9,9),WTRELN(9),COEFU(9),COEFO(9),
+ &IACCMX(4),SIGSMX(4),SIGSSM(3),PMMN(2)
+ DATA CVAR/'tau ','tau''','y* ','cth '/
+ DATA SIGSSM/3*0D0/
+
+C...Initial values and loop over subprocesses.
+ NPOSI=0
+ VINT(143)=1D0
+ VINT(144)=1D0
+ XSEC(0,1)=0D0
+ ITECH=0
+ DO 460 ISUB=1,500
+ MINT(1)=ISUB
+ MINT(51)=0
+
+C...Find maximum weight factors for photon flux.
+ IF(MSUB(ISUB).EQ.1.OR.(ISUB.GE.91.AND.ISUB.LE.100)) THEN
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) CALL PYGAGA(2,WTGAGA)
+ ENDIF
+
+C...Select subprocess to study: skip cases not applicable.
+ IF(ISET(ISUB).EQ.11) THEN
+ IF(MSUB(ISUB).NE.1) GOTO 460
+C...User process intialization: cross section model dependent.
+ IF(IABS(IDWTUP).EQ.1) THEN
+ IF(IDWTUP.GT.0.AND.XMAXUP(KFPR(ISUB,1)).LT.0D0) CALL
+ & PYERRM(26,'(PYMAXI:) Negative XMAXUP for user process')
+ XSEC(ISUB,1)=1.00000001D-9*ABS(XMAXUP(KFPR(ISUB,1)))
+ ELSE
+ IF((IDWTUP.EQ.2.OR.IDWTUP.EQ.3).AND.
+ & XSECUP(KFPR(ISUB,1)).LT.0D0) CALL
+ & PYERRM(26,'(PYMAXI:) Negative XSECUP for user process')
+ IF(IDWTUP.EQ.2.AND.XMAXUP(KFPR(ISUB,1)).LT.0D0) CALL
+ & PYERRM(26,'(PYMAXI:) Negative XMAXUP for user process')
+ XSEC(ISUB,1)=1.00000001D-9*ABS(XSECUP(KFPR(ISUB,1)))
+ ENDIF
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) XSEC(ISUB,1)=
+ & WTGAGA*XSEC(ISUB,1)
+ NPOSI=NPOSI+1
+ GOTO 450
+ ELSEIF(ISUB.GE.91.AND.ISUB.LE.95) THEN
+ CALL PYSIGH(NCHN,SIGS)
+ XSEC(ISUB,1)=SIGS
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) XSEC(ISUB,1)=
+ & WTGAGA*XSEC(ISUB,1)
+ IF(MSUB(ISUB).NE.1) GOTO 460
+ NPOSI=NPOSI+1
+ GOTO 450
+ ELSEIF(ISUB.EQ.99.AND.MSUB(ISUB).EQ.1) THEN
+ CALL PYSIGH(NCHN,SIGS)
+ XSEC(ISUB,1)=SIGS
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) XSEC(ISUB,1)=
+ & WTGAGA*XSEC(ISUB,1)
+ IF(XSEC(ISUB,1).EQ.0D0) THEN
+ MSUB(ISUB)=0
+ ELSE
+ NPOSI=NPOSI+1
+ ENDIF
+ GOTO 450
+ ELSEIF(ISUB.EQ.96) THEN
+ IF(MINT(50).EQ.0) GOTO 460
+ IF(MSUB(95).NE.1.AND.MOD(MSTP(81),10).LE.0.AND.MSTP(131).LE.0)
+ & GOTO 460
+ IF(MINT(49).EQ.0.AND.MSTP(131).EQ.0) GOTO 460
+ ELSEIF(ISUB.EQ.11.OR.ISUB.EQ.12.OR.ISUB.EQ.13.OR.ISUB.EQ.28.OR.
+ & ISUB.EQ.53.OR.ISUB.EQ.68) THEN
+ IF(MSUB(ISUB).NE.1.OR.MSUB(95).EQ.1) GOTO 460
+ ELSEIF(ISUB.GE.381.AND.ISUB.LE.386) THEN
+ IF(MSUB(ISUB).NE.1.OR.MSUB(95).EQ.1) GOTO 460
+ ELSE
+ IF(MSUB(ISUB).NE.1) GOTO 460
+ ENDIF
+ ISTSB=ISET(ISUB)
+ IF(ISUB.EQ.96) ISTSB=2
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5000) ISUB
+ MWTXS=0
+ IF(MSTP(142).GE.1.AND.ISUB.NE.96.AND.MSUB(91)+MSUB(92)+MSUB(93)+
+ & MSUB(94)+MSUB(95).EQ.0) MWTXS=1
+
+C...Find resonances (explicit or implicit in cross-section).
+ MINT(72)=0
+ KFR1=0
+ IF(ISTSB.EQ.1.OR.ISTSB.EQ.3.OR.ISTSB.EQ.5) THEN
+ KFR1=KFPR(ISUB,1)
+ ELSEIF(ISUB.EQ.24.OR.ISUB.EQ.25.OR.ISUB.EQ.110.OR.ISUB.EQ.165
+ & .OR.ISUB.EQ.171.OR.ISUB.EQ.176) THEN
+ KFR1=23
+ ELSEIF(ISUB.EQ.23.OR.ISUB.EQ.26.OR.ISUB.EQ.166.OR.ISUB.EQ.172
+ & .OR.ISUB.EQ.177) THEN
+ KFR1=24
+ ELSEIF(ISUB.GE.71.AND.ISUB.LE.77) THEN
+ KFR1=25
+ IF(MSTP(46).EQ.5) THEN
+ KFR1=89
+ PMAS(89,1)=PARP(45)
+ PMAS(89,2)=PARP(45)**3/(96D0*PARU(1)*PARP(47)**2)
+ ENDIF
+ ENDIF
+ CKMX=CKIN(2)
+ IF(CKMX.LE.0D0) CKMX=VINT(1)
+ KCR1=PYCOMP(KFR1)
+ IF(KFR1.NE.0) THEN
+ IF(CKIN(1).GT.PMAS(KCR1,1)+20D0*PMAS(KCR1,2).OR.
+ & CKMX.LT.PMAS(KCR1,1)-20D0*PMAS(KCR1,2)) KFR1=0
+ ENDIF
+ IF(KFR1.NE.0) THEN
+ TAUR1=PMAS(KCR1,1)**2/VINT(2)
+ GAMR1=PMAS(KCR1,1)*PMAS(KCR1,2)/VINT(2)
+ MINT(72)=1
+ MINT(73)=KFR1
+ VINT(73)=TAUR1
+ VINT(74)=GAMR1
+ ENDIF
+ KFR2=0
+ KFR3=0
+ IF(ISUB.EQ.141.OR.ISUB.EQ.194.OR.ISUB.EQ.195.OR.
+ $ (ISUB.GE.361.AND.ISUB.LE.380))
+ $ THEN
+ KFR2=23
+ IF(ISUB.EQ.141) THEN
+ KCR2=PYCOMP(KFR2)
+ IF(CKIN(1).GT.PMAS(KCR2,1)+20D0*PMAS(KCR2,2).OR.
+ & CKMX.LT.PMAS(KCR2,1)-20D0*PMAS(KCR2,2)) THEN
+ KFR2=0
+ ELSE
+ TAUR2=PMAS(KCR2,1)**2/VINT(2)
+ GAMR2=PMAS(KCR2,1)*PMAS(KCR2,2)/VINT(2)
+ MINT(72)=2
+ MINT(74)=KFR2
+ VINT(75)=TAUR2
+ VINT(76)=GAMR2
+ ENDIF
+ ELSEIF(ITECH.EQ.0) THEN
+ ALPRHT=2.16D0*(3D0/DBLE(ITCM(1)))
+ ITECH=1
+ KFR1=KTECHN+113
+ KCR1=PYCOMP(KFR1)
+ KFR2=KTECHN+223
+ KCR2=PYCOMP(KFR2)
+ KFR3=KTECHN+115
+ KCR3=PYCOMP(KFR3)
+ IRES=0
+C...Order the resonances
+ IF(PMAS(KCR3,1).LT.PMAS(KCR2,1)) THEN
+ KCT=KCR3
+ KCR3=KCR2
+ KCR2=KCT
+ ENDIF
+ IF(PMAS(KCR3,1).LT.PMAS(KCR1,1)) THEN
+ KCT=KCR3
+ KCR3=KCR1
+ KCR1=KCT
+ ENDIF
+ IF(PMAS(KCR2,1).LT.PMAS(KCR1,1)) THEN
+ KCT=KCR2
+ KCR2=KCR1
+ KCR1=KCT
+ ENDIF
+ DO 101 I=1,3
+ IF(I.EQ.1) THEN
+ SHN0=PMAS(KCR1,1)**2
+ ELSEIF(I.EQ.2) THEN
+ IF(ABS(PMAS(KCR2,1)-PMAS(KCR1,1)).LE.1D-6) GOTO 101
+ SHN0=PMAS(KCR2,1)**2
+ ELSEIF(I.EQ.3) THEN
+ IF(ABS(PMAS(KCR3,1)-PMAS(KCR3,1)).LE.1D-6) GOTO 101
+ SHN0=PMAS(KCR3,1)**2
+ ENDIF
+ AEM=PYALEM(SHN0)
+ FAR=SQRT(AEM/ALPRHT)
+ SHN=SHN0*(1D0-FAR)
+ CALL PYTECM(SHN,S1,WIDO,1)
+ RES=SHN-S1
+ SHN=S1*.99D0
+ SHSTEP=2D0
+ 102 SHN=SHN+SHSTEP
+ CALL PYTECM(SHN,S1,WIDO,1)
+ IF(RES.LT.0D0.AND.SHN-S1.GE.0D0) THEN
+ IOK=.FALSE.
+ IF(IRES.GT.0) THEN
+ IF(ABS(SQRT(S1)-XMAS(IRES)).GT.1D-6) IOK=.TRUE.
+ ELSEIF(IRES.EQ.0) THEN
+ IOK=.TRUE.
+ ENDIF
+ IF(IOK) THEN
+ IRES=IRES+1
+ XMAS(IRES)=SQRT(S1)
+ XWID(IRES)=WIDO
+ ENDIF
+ ENDIF
+ RES=SHN-S1
+ IF(IRES.LT.3.AND.SHN.LT.SHN0*(1D0+FAR)) GOTO 102
+ 101 CONTINUE
+ JRES=0
+ KFR1=KTECHN+213
+ KCR1=PYCOMP(KFR1)
+ KFR2=KTECHN+215
+ KCR2=PYCOMP(KFR2)
+ IF(PMAS(KCR2,1).LT.PMAS(KCR1,1)) THEN
+ KCT=KCR2
+ KCR2=KCR1
+ KCR1=KCT
+ ENDIF
+ DO 103 I=1,2
+ IF(I.EQ.1) THEN
+ SHN0=PMAS(KCR1,1)**2
+ ELSEIF(I.EQ.2) THEN
+ IF(ABS(PMAS(KCR2,1)-PMAS(KCR1,1)).LE.1D-6) GOTO 103
+ SHN0=PMAS(KCR2,1)**2
+ ENDIF
+ AEM=PYALEM(SHN0)
+ FAR=SQRT(AEM/ALPRHT)
+ SHN=SHN0*(1D0-FAR)
+ CALL PYTECM(SHN,S1,WIDO,2)
+ RES=SHN-S1
+ SHN=S1*.99D0
+ SHSTEP=2D0
+ 104 SHN=SHN+SHSTEP
+ CALL PYTECM(SHN,S1,WIDO,2)
+ IF(RES.LT.0D0.AND.SHN-S1.GE.0D0) THEN
+ IOK=.FALSE.
+ IF(JRES.GT.0) THEN
+ IF(ABS(SQRT(S1)-XMAS(IRES)).GT.1D-6) IOK=.TRUE.
+ ELSEIF(JRES.EQ.0) THEN
+ IOK=.TRUE.
+ ENDIF
+ IF(IOK) THEN
+ JRES=JRES+1
+ YMAS(JRES)=SQRT(S1)
+ YWID(JRES)=WIDO
+ ENDIF
+ ENDIF
+ RES=SHN-S1
+ IF(JRES.LT.2.AND.SHN.LT.SHN0*(1D0+FAR)) GOTO 104
+ 103 CONTINUE
+ ENDIF
+ IF(ISUB.EQ.194.OR.(ISUB.GE.361.AND.ISUB.LE.368).OR.
+ & ISUB.EQ.379.OR.ISUB.EQ.380) THEN
+ MINT(72)=IRES
+ IF(IRES.GE.1) THEN
+ VINT(73)=XMAS(1)**2/VINT(2)
+ VINT(74)=XMAS(1)*XWID(1)/VINT(2)
+ TAUR1=VINT(73)
+ GAMR1=VINT(74)
+ XM1=XMAS(1)
+ XG1=XWID(1)
+ KFR1=1
+ ENDIF
+ IF(IRES.GE.2) THEN
+ VINT(75)=XMAS(2)**2/VINT(2)
+ VINT(76)=XMAS(2)*XWID(2)/VINT(2)
+ TAUR2=VINT(75)
+ GAMR2=VINT(76)
+ XM2=XMAS(2)
+ XG2=XWID(2)
+ KFR2=2
+ ENDIF
+ IF(IRES.EQ.3) THEN
+ VINT(77)=XMAS(3)**2/VINT(2)
+ VINT(78)=XMAS(3)*XWID(3)/VINT(2)
+ TAUR3=VINT(77)
+ GAMR3=VINT(78)
+ XM3=XMAS(3)
+ XG3=XWID(3)
+ KFR3=3
+ ENDIF
+C...Charged current: rho+- and a+-
+ ELSEIF(ISUB.EQ.195.OR.ISUB.GE.370.AND.ISUB.LE.378) THEN
+ MINT(72)=IRES
+ IF(JRES.GE.1) THEN
+ VINT(73)=YMAS(1)**2/VINT(2)
+ VINT(74)=YMAS(1)*YWID(1)/VINT(2)
+ KFR1=1
+ TAUR1=VINT(73)
+ GAMR1=VINT(74)
+ XM1=YMAS(1)
+ XG1=YWID(1)
+ ENDIF
+ IF(JRES.GE.2) THEN
+ VINT(75)=YMAS(2)**2/VINT(2)
+ VINT(76)=YMAS(2)*YWID(2)/VINT(2)
+ KFR2=2
+ TAUR2=VINT(73)
+ GAMR2=VINT(74)
+ XM2=YMAS(2)
+ XG2=YWID(2)
+ ENDIF
+ KFR3=0
+ ENDIF
+ IF(ISUB.NE.141) THEN
+ IF(KFR1.NE.0.AND.(CKIN(1).GT.(XM1+20D0*XG1)
+ & .OR.CKMX.LT.(XM1-20D0*XG1))) KFR1=0
+ IF(KFR2.NE.0.AND.(CKIN(1).GT.(XM2+20D0*XG2)
+ & .OR.CKMX.LT.(XM2-20D0*XG2))) KFR2=0
+ IF(KFR3.NE.0.AND.(CKIN(1).GT.(XM3+20D0*XG3)
+ & .OR.CKMX.LT.(XM3-20D0*XG3))) KFR3=0
+ IF(KFR3.NE.0.AND.KFR2.NE.0.AND.KFR1.NE.0) THEN
+
+ ELSEIF(KFR1.NE.0.AND.KFR2.NE.0) THEN
+ MINT(72)=2
+ ELSEIF(KFR1.NE.0.AND.KFR3.NE.0) THEN
+ MINT(72)=2
+ MINT(74)=KFR3
+ VINT(75)=TAUR3
+ VINT(76)=GAMR3
+ ELSEIF(KFR2.NE.0.AND.KFR3.NE.0) THEN
+ MINT(72)=2
+ MINT(73)=KFR2
+ VINT(73)=TAUR2
+ VINT(74)=GAMR2
+ MINT(74)=KFR3
+ VINT(75)=TAUR3
+ VINT(76)=GAMR3
+ ELSEIF(KFR1.NE.0) THEN
+ MINT(72)=1
+ ELSEIF(KFR2.NE.0) THEN
+ MINT(72)=1
+ MINT(73)=KFR2
+ VINT(73)=TAUR2
+ VINT(74)=GAMR2
+ ELSEIF(KFR3.NE.0) THEN
+ MINT(72)=1
+ MINT(73)=KFR3
+ VINT(73)=TAUR3
+ VINT(74)=GAMR3
+ ELSE
+ MINT(72)=0
+ ENDIF
+ ELSE
+ IF(KFR2.NE.0.AND.KFR1.NE.0) THEN
+
+ ELSEIF(KFR2.NE.0) THEN
+ KFR1=KFR2
+ TAUR1=TAUR2
+ GAMR1=GAMR2
+ MINT(72)=1
+ MINT(73)=KFR1
+ VINT(73)=TAUR1
+ VINT(74)=GAMR1
+ KFR2=0
+ ELSE
+ MINT(72)=0
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...Find product masses and minimum pT of process.
+ SQM3=0D0
+ SQM4=0D0
+ MINT(71)=0
+ VINT(71)=CKIN(3)
+ VINT(80)=1D0
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
+ NBW=0
+ DO 110 I=1,2
+ PMMN(I)=0D0
+ IF(KFPR(ISUB,I).EQ.0) THEN
+ ELSEIF(MSTP(42).LE.0.OR.PMAS(PYCOMP(KFPR(ISUB,I)),2).LT.
+ & PARP(41)) THEN
+ IF(I.EQ.1) SQM3=PMAS(PYCOMP(KFPR(ISUB,I)),1)**2
+ IF(I.EQ.2) SQM4=PMAS(PYCOMP(KFPR(ISUB,I)),1)**2
+ ELSE
+ NBW=NBW+1
+C...This prevents SUSY/t particles from becoming too light.
+ KFLW=KFPR(ISUB,I)
+ IF(KFLW/KSUSY1.EQ.1.OR.KFLW/KSUSY1.EQ.2) THEN
+ KCW=PYCOMP(KFLW)
+ PMMN(I)=PMAS(KCW,1)
+ DO 100 IDC=MDCY(KCW,2),MDCY(KCW,2)+MDCY(KCW,3)-1
+ IF(MDME(IDC,1).GT.0.AND.BRAT(IDC).GT.1E-4) THEN
+ PMSUM=PMAS(PYCOMP(KFDP(IDC,1)),1)+
+ & PMAS(PYCOMP(KFDP(IDC,2)),1)
+ IF(KFDP(IDC,3).NE.0) PMSUM=PMSUM+
+ & PMAS(PYCOMP(KFDP(IDC,3)),1)
+ PMMN(I)=MIN(PMMN(I),PMSUM)
+ ENDIF
+ 100 CONTINUE
+ ELSEIF(KFLW.EQ.6) THEN
+ PMMN(I)=PMAS(24,1)+PMAS(5,1)
+ ENDIF
+ ENDIF
+ 110 CONTINUE
+ IF(NBW.GE.1) THEN
+ CKIN41=CKIN(41)
+ CKIN43=CKIN(43)
+ CKIN(41)=MAX(PMMN(1),CKIN(41))
+ CKIN(43)=MAX(PMMN(2),CKIN(43))
+ CALL PYOFSH(3,0,KFPR(ISUB,1),KFPR(ISUB,2),0D0,PQM3,PQM4)
+ CKIN(41)=CKIN41
+ CKIN(43)=CKIN43
+ IF(MINT(51).EQ.1) THEN
+ WRITE(MSTU(11),5100) ISUB
+ MSUB(ISUB)=0
+ GOTO 460
+ ENDIF
+ SQM3=PQM3**2
+ SQM4=PQM4**2
+ ENDIF
+ IF(MIN(SQM3,SQM4).LT.CKIN(6)**2) MINT(71)=1
+ IF(MINT(71).EQ.1) VINT(71)=MAX(CKIN(3),CKIN(5))
+ IF(ISUB.EQ.96.AND.MSTP(82).LE.1) THEN
+ VINT(71)=PARP(81)*(VINT(1)/PARP(89))**PARP(90)
+ ELSEIF(ISUB.EQ.96) THEN
+ VINT(71)=0.08D0*PARP(82)*(VINT(1)/PARP(89))**PARP(90)
+ ENDIF
+ ENDIF
+ VINT(63)=SQM3
+ VINT(64)=SQM4
+
+C...Prepare for additional variable choices in 2 -> 3.
+ IF(ISTSB.EQ.5) THEN
+ VINT(201)=0D0
+ IF(KFPR(ISUB,2).GT.0) VINT(201)=PMAS(PYCOMP(KFPR(ISUB,2)),1)
+ VINT(206)=VINT(201)
+ IF(ISUB.EQ.401.OR.ISUB.EQ.402) VINT(206)=PMAS(5,1)
+ VINT(204)=PMAS(23,1)
+ IF(ISUB.EQ.124.OR.ISUB.EQ.351) VINT(204)=PMAS(24,1)
+ IF(ISUB.EQ.352) VINT(204)=PMAS(PYCOMP(9900024),1)
+ IF(ISUB.EQ.121.OR.ISUB.EQ.122.OR.ISUB.EQ.181.OR.ISUB.EQ.182
+ & .OR.ISUB.EQ.186.OR.ISUB.EQ.187.OR.ISUB.EQ.401.OR.ISUB.EQ.402)
+ & VINT(204)=VINT(201)
+ VINT(209)=VINT(204)
+ IF(ISUB.EQ.401.OR.ISUB.EQ.402) VINT(209)=VINT(206)
+ ENDIF
+
+C...Number of points for each variable: tau, tau', y*, cos(theta-hat).
+ IPEAK7=0
+ NPTS(1)=2+2*MINT(72)
+ IF(MINT(47).EQ.1) THEN
+ IF(ISTSB.EQ.1.OR.ISTSB.EQ.2) NPTS(1)=1
+ ELSEIF(MINT(47).GE.5) THEN
+ IF(ISTSB.LE.2.OR.ISTSB.GT.5) THEN
+ NPTS(1)=NPTS(1)+1
+ IPEAK7=1
+ ENDIF
+ ENDIF
+ NPTS(2)=1
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) THEN
+ IF(MINT(47).GE.2) NPTS(2)=2
+ IF(MINT(47).GE.5) NPTS(2)=3
+ ENDIF
+ NPTS(3)=1
+ IF(MINT(47).EQ.4.OR.MINT(47).EQ.5) THEN
+ NPTS(3)=3
+ IF(MINT(45).EQ.3) NPTS(3)=NPTS(3)+1
+ IF(MINT(46).EQ.3) NPTS(3)=NPTS(3)+1
+ ENDIF
+ NPTS(4)=1
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) NPTS(4)=5
+ NTRY=NPTS(1)*NPTS(2)*NPTS(3)*NPTS(4)
+
+C...Reset coefficients of cross-section weighting.
+ DO 120 J=1,20
+ COEF(ISUB,J)=0D0
+ 120 CONTINUE
+ IF(ISUB.EQ.194.OR.ISUB.EQ.195.OR.(ISUB.GE.361
+ & .AND.ISUB.LE.380)) THEN
+ DO 125 J=1,2
+ COEFX(ISUB,J)=0D0
+ 125 CONTINUE
+ ENDIF
+ COEF(ISUB,1)=1D0
+ COEF(ISUB,8)=0.5D0
+ COEF(ISUB,9)=0.5D0
+ COEF(ISUB,13)=1D0
+ COEF(ISUB,18)=1D0
+ MCTH=0
+ MTAUP=0
+ METAUP=0
+ VINT(23)=0D0
+ VINT(26)=0D0
+ SIGSAM=0D0
+
+C...Find limits and select tau, y*, cos(theta-hat) and tau' values,
+C...in grid of phase space points.
+ CALL PYKLIM(1)
+ METAU=MINT(51)
+ NACC=0
+ DO 150 ITRY=1,NTRY
+ MINT(51)=0
+ IF(METAU.EQ.1) GOTO 150
+ IF(MOD(ITRY-1,NPTS(2)*NPTS(3)*NPTS(4)).EQ.0) THEN
+ MTAU=1+(ITRY-1)/(NPTS(2)*NPTS(3)*NPTS(4))
+ IF(MINT(72).LE.2.AND.MTAU.GT.2+2*MINT(72)) THEN
+ MTAU=7
+ ELSEIF(MINT(72).EQ.3.AND.IPEAK7.EQ.0.AND.MTAU.GE.7) THEN
+ MTAU=MTAU+1
+ ENDIF
+ RTAU=0.5D0
+C...Special case when both resonances have same mass,
+C...as is often the case in process 194.
+c IF(MINT(72).GE.2) THEN
+c IF(ABS(PMAS(KCR2,1)-PMAS(KCR1,1)).LT.
+c & 0.01D0*(PMAS(KCR2,1)+PMAS(KCR1,1))) THEN
+c IF(MTAU.EQ.3.OR.MTAU.EQ.4) THEN
+c RTAU=0.4D0
+c ELSEIF(MTAU.EQ.5.OR.MTAU.EQ.6) THEN
+c RTAU=0.6D0
+c ENDIF
+c ENDIF
+c ENDIF
+ CALL PYKMAP(1,MTAU,RTAU)
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) CALL PYKLIM(4)
+ METAUP=MINT(51)
+ ENDIF
+ IF(METAUP.EQ.1) GOTO 150
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5.AND.MOD(ITRY-1,NPTS(3)*NPTS(4))
+ & .EQ.0) THEN
+ MTAUP=1+MOD((ITRY-1)/(NPTS(3)*NPTS(4)),NPTS(2))
+ CALL PYKMAP(4,MTAUP,0.5D0)
+ ENDIF
+ IF(MOD(ITRY-1,NPTS(3)*NPTS(4)).EQ.0) THEN
+ CALL PYKLIM(2)
+ MEYST=MINT(51)
+ ENDIF
+ IF(MEYST.EQ.1) GOTO 150
+ IF(MOD(ITRY-1,NPTS(4)).EQ.0) THEN
+ MYST=1+MOD((ITRY-1)/NPTS(4),NPTS(3))
+ IF(MYST.EQ.4.AND.MINT(45).NE.3) MYST=5
+ CALL PYKMAP(2,MYST,0.5D0)
+ CALL PYKLIM(3)
+ MECTH=MINT(51)
+ ENDIF
+ IF(MECTH.EQ.1) GOTO 150
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
+ MCTH=1+MOD(ITRY-1,NPTS(4))
+ CALL PYKMAP(3,MCTH,0.5D0)
+ ENDIF
+ IF(ISUB.EQ.96) VINT(25)=VINT(21)*(1D0-VINT(23)**2)
+
+C...Store position and limits.
+ MINT(51)=0
+ CALL PYKLIM(0)
+ IF(MINT(51).EQ.1) GOTO 150
+ NACC=NACC+1
+ MVARPT(NACC,1)=MTAU
+ MVARPT(NACC,2)=MTAUP
+ MVARPT(NACC,3)=MYST
+ MVARPT(NACC,4)=MCTH
+ DO 130 J=1,30
+ VINTPT(NACC,J)=VINT(10+J)
+ 130 CONTINUE
+
+C...Normal case: calculate cross-section.
+ IF(ISTSB.NE.5) THEN
+ CALL PYSIGH(NCHN,SIGS)
+ IF(MWTXS.EQ.1) THEN
+ CALL PYEVWT(WTXS)
+ SIGS=WTXS*SIGS
+ ENDIF
+
+C..2 -> 3: find highest value out of a number of tries.
+ ELSE
+ SIGS=0D0
+ DO 140 IKIN3=1,MSTP(129)
+ CALL PYKMAP(5,0,0D0)
+ IF(MINT(51).EQ.1) GOTO 140
+ CALL PYSIGH(NCHN,SIGTMP)
+ IF(MWTXS.EQ.1) THEN
+ CALL PYEVWT(WTXS)
+ SIGTMP=WTXS*SIGTMP
+ ENDIF
+ IF(SIGTMP.GT.SIGS) SIGS=SIGTMP
+ 140 CONTINUE
+ ENDIF
+
+C...Store cross-section.
+ SIGSPT(NACC)=SIGS
+ IF(SIGS.GT.SIGSAM) SIGSAM=SIGS
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5200) MTAU,MYST,MCTH,MTAUP,
+ & VINT(21),VINT(22),VINT(23),VINT(26),SIGS
+ 150 CONTINUE
+ IF(NACC.EQ.0) THEN
+ WRITE(MSTU(11),5100) ISUB
+ MSUB(ISUB)=0
+ GOTO 460
+ ELSEIF(SIGSAM.EQ.0D0) THEN
+ WRITE(MSTU(11),5300) ISUB
+ MSUB(ISUB)=0
+ GOTO 460
+ ENDIF
+ IF(ISUB.NE.96) NPOSI=NPOSI+1
+
+C...Calculate integrals in tau over maximal phase space limits.
+ TAUMIN=VINT(11)
+ TAUMAX=VINT(31)
+ ATAU1=LOG(TAUMAX/TAUMIN)
+ IF(NPTS(1).GE.2) THEN
+ ATAU2=(TAUMAX-TAUMIN)/(TAUMAX*TAUMIN)
+ ENDIF
+ IF(NPTS(1).GE.4) THEN
+ ATAU3=LOG(TAUMAX/TAUMIN*(TAUMIN+TAUR1)/(TAUMAX+TAUR1))/TAUR1
+ ATAU4=(ATAN((TAUMAX-TAUR1)/GAMR1)-ATAN((TAUMIN-TAUR1)/GAMR1))/
+ & GAMR1
+ ENDIF
+ IF(NPTS(1).GE.6) THEN
+ ATAU5=LOG(TAUMAX/TAUMIN*(TAUMIN+TAUR2)/(TAUMAX+TAUR2))/TAUR2
+ ATAU6=(ATAN((TAUMAX-TAUR2)/GAMR2)-ATAN((TAUMIN-TAUR2)/GAMR2))/
+ & GAMR2
+ ENDIF
+ IF(NPTS(1).GE.8) THEN
+ ATAU8=LOG(TAUMAX/TAUMIN*(TAUMIN+TAUR3)/(TAUMAX+TAUR3))/TAUR3
+ ATAU9=(ATAN((TAUMAX-TAUR3)/GAMR3)-ATAN((TAUMIN-TAUR3)/GAMR3))/
+ & GAMR3
+ ENDIF
+ IF(IPEAK7.EQ.1) THEN
+ ATAU7=LOG(MAX(2D-10,1D0-TAUMIN)/MAX(2D-10,1D0-TAUMAX))
+ ENDIF
+
+C...Reset. Sum up cross-sections in points calculated.
+ DO 320 IVAR=1,4
+ IF(NPTS(IVAR).EQ.1) GOTO 320
+ IF(ISUB.EQ.96.AND.IVAR.EQ.4) GOTO 320
+ NBIN=NPTS(IVAR)
+ DO 170 J1=1,NBIN
+ NAREL(J1)=0
+ WTREL(J1)=0D0
+ COEFU(J1)=0D0
+ DO 160 J2=1,NBIN
+ WTMAT(J1,J2)=0D0
+ 160 CONTINUE
+ 170 CONTINUE
+ DO 180 IACC=1,NACC
+ IBIN=MVARPT(IACC,IVAR)
+ IF(IVAR.EQ.1) THEN
+ IF(IBIN.GT.7.AND.IPEAK7.EQ.0) THEN
+ IBIN=IBIN-1
+ ELSEIF(IBIN.EQ.7.AND.IPEAK7.EQ.1.AND.MSTP(72).LT.3) THEN
+ IBIN=3+2*MINT(72)
+ ENDIF
+ ENDIF
+ IF(IVAR.EQ.3.AND.IBIN.EQ.5.AND.MINT(45).NE.3) IBIN=4
+ NAREL(IBIN)=NAREL(IBIN)+1
+ WTREL(IBIN)=WTREL(IBIN)+SIGSPT(IACC)
+
+C...Sum up tau cross-section pieces in points used.
+ IF(IVAR.EQ.1) THEN
+ TAU=VINTPT(IACC,11)
+ WTMAT(IBIN,1)=WTMAT(IBIN,1)+1D0
+ WTMAT(IBIN,2)=WTMAT(IBIN,2)+(ATAU1/ATAU2)/TAU
+ IF(NBIN.GE.4) THEN
+ WTMAT(IBIN,3)=WTMAT(IBIN,3)+(ATAU1/ATAU3)/(TAU+TAUR1)
+ WTMAT(IBIN,4)=WTMAT(IBIN,4)+(ATAU1/ATAU4)*TAU/
+ & ((TAU-TAUR1)**2+GAMR1**2)
+ ENDIF
+ IF(NBIN.GE.6) THEN
+ WTMAT(IBIN,5)=WTMAT(IBIN,5)+(ATAU1/ATAU5)/(TAU+TAUR2)
+ WTMAT(IBIN,6)=WTMAT(IBIN,6)+(ATAU1/ATAU6)*TAU/
+ & ((TAU-TAUR2)**2+GAMR2**2)
+ ENDIF
+ IF(MINT(72).LE.2.AND.IPEAK7.EQ.1) THEN
+ WTMAT(IBIN,3+2*MINT(72))=WTMAT(IBIN,3+2*MINT(72))
+ & +(ATAU1/ATAU7)*TAU/MAX(2D-10,1D0-TAU)
+ ELSEIF(MINT(72).EQ.3.AND.IPEAK7.EQ.1) THEN
+ WTMAT(IBIN,7)=WTMAT(IBIN,7)
+ & +(ATAU1/ATAU7)*TAU/MAX(2D-10,1D0-TAU)
+ ENDIF
+ IF(MINT(72).EQ.3) THEN
+ WTMAT(IBIN,7+IPEAK7)=WTMAT(IBIN,7+IPEAK7)
+ & +(ATAU1/ATAU8)/(TAU+TAUR3)
+ WTMAT(IBIN,8+IPEAK7)=WTMAT(IBIN,8+IPEAK7)
+ & +(ATAU1/ATAU9)*TAU/((TAU-TAUR3)**2+GAMR3**2)
+ ENDIF
+C...Sum up tau' cross-section pieces in points used.
+ ELSEIF(IVAR.EQ.2) THEN
+ TAU=VINTPT(IACC,11)
+ TAUP=VINTPT(IACC,16)
+ TAUPMN=VINTPT(IACC,6)
+ TAUPMX=VINTPT(IACC,26)
+ ATAUP1=LOG(TAUPMX/TAUPMN)
+ ATAUP2=((1D0-TAU/TAUPMX)**4-(1D0-TAU/TAUPMN)**4)/(4D0*TAU)
+ WTMAT(IBIN,1)=WTMAT(IBIN,1)+1D0
+ WTMAT(IBIN,2)=WTMAT(IBIN,2)+(ATAUP1/ATAUP2)*
+ & (1D0-TAU/TAUP)**3/TAUP
+ IF(NBIN.GE.3) THEN
+ ATAUP3=LOG(MAX(2D-10,1D0-TAUPMN)/MAX(2D-10,1D0-TAUPMX))
+ WTMAT(IBIN,3)=WTMAT(IBIN,3)+(ATAUP1/ATAUP3)*
+ & TAUP/MAX(2D-10,1D0-TAUP)
+ ENDIF
+
+C...Sum up y* cross-section pieces in points used.
+ ELSEIF(IVAR.EQ.3) THEN
+ YST=VINTPT(IACC,12)
+ YSTMIN=VINTPT(IACC,2)
+ YSTMAX=VINTPT(IACC,22)
+ AYST0=YSTMAX-YSTMIN
+ AYST1=0.5D0*(YSTMAX-YSTMIN)**2
+ AYST2=AYST1
+ AYST3=2D0*(ATAN(EXP(YSTMAX))-ATAN(EXP(YSTMIN)))
+ WTMAT(IBIN,1)=WTMAT(IBIN,1)+(AYST0/AYST1)*(YST-YSTMIN)
+ WTMAT(IBIN,2)=WTMAT(IBIN,2)+(AYST0/AYST2)*(YSTMAX-YST)
+ WTMAT(IBIN,3)=WTMAT(IBIN,3)+(AYST0/AYST3)/COSH(YST)
+ IF(MINT(45).EQ.3) THEN
+ TAUE=VINTPT(IACC,11)
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUE=VINTPT(IACC,16)
+ YST0=-0.5D0*LOG(TAUE)
+ AYST4=LOG(MAX(1D-10,EXP(YST0-YSTMIN)-1D0)/
+ & MAX(1D-10,EXP(YST0-YSTMAX)-1D0))
+ WTMAT(IBIN,4)=WTMAT(IBIN,4)+(AYST0/AYST4)/
+ & MAX(1D-10,1D0-EXP(YST-YST0))
+ ENDIF
+ IF(MINT(46).EQ.3) THEN
+ TAUE=VINTPT(IACC,11)
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUE=VINTPT(IACC,16)
+ YST0=-0.5D0*LOG(TAUE)
+ AYST5=LOG(MAX(1D-10,EXP(YST0+YSTMAX)-1D0)/
+ & MAX(1D-10,EXP(YST0+YSTMIN)-1D0))
+ WTMAT(IBIN,NBIN)=WTMAT(IBIN,NBIN)+(AYST0/AYST5)/
+ & MAX(1D-10,1D0-EXP(-YST-YST0))
+ ENDIF
+
+C...Sum up cos(theta-hat) cross-section pieces in points used.
+ ELSE
+ RM34=MAX(1D-20,2D0*SQM3*SQM4/(VINTPT(IACC,11)*VINT(2))**2)
+ RSQM=1D0+RM34
+ CTHMAX=SQRT(1D0-4D0*VINT(71)**2/(TAUMAX*VINT(2)))
+ CTHMIN=-CTHMAX
+ IF(CTHMAX.GT.0.9999D0) RM34=MAX(RM34,2D0*VINT(71)**2/
+ & (TAUMAX*VINT(2)))
+ ACTH1=CTHMAX-CTHMIN
+ ACTH2=LOG(MAX(RM34,RSQM-CTHMIN)/MAX(RM34,RSQM-CTHMAX))
+ ACTH3=LOG(MAX(RM34,RSQM+CTHMAX)/MAX(RM34,RSQM+CTHMIN))
+ ACTH4=1D0/MAX(RM34,RSQM-CTHMAX)-1D0/MAX(RM34,RSQM-CTHMIN)
+ ACTH5=1D0/MAX(RM34,RSQM+CTHMIN)-1D0/MAX(RM34,RSQM+CTHMAX)
+ CTH=VINTPT(IACC,13)
+ WTMAT(IBIN,1)=WTMAT(IBIN,1)+1D0
+ WTMAT(IBIN,2)=WTMAT(IBIN,2)+(ACTH1/ACTH2)/
+ & MAX(RM34,RSQM-CTH)
+ WTMAT(IBIN,3)=WTMAT(IBIN,3)+(ACTH1/ACTH3)/
+ & MAX(RM34,RSQM+CTH)
+ WTMAT(IBIN,4)=WTMAT(IBIN,4)+(ACTH1/ACTH4)/
+ & MAX(RM34,RSQM-CTH)**2
+ WTMAT(IBIN,5)=WTMAT(IBIN,5)+(ACTH1/ACTH5)/
+ & MAX(RM34,RSQM+CTH)**2
+ ENDIF
+ 180 CONTINUE
+
+C...Check that equation system solvable.
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5400) CVAR(IVAR)
+ MSOLV=1
+ WTRELS=0D0
+ DO 190 IBIN=1,NBIN
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5500) (WTMAT(IBIN,IRED),
+ & IRED=1,NBIN),WTREL(IBIN)
+ IF(NAREL(IBIN).EQ.0) MSOLV=0
+ WTRELS=WTRELS+WTREL(IBIN)
+ 190 CONTINUE
+ IF(ABS(WTRELS).LT.1D-20) MSOLV=0
+
+C...Solve to find relative importance of cross-section pieces.
+ IF(MSOLV.EQ.1) THEN
+ DO 200 IBIN=1,NBIN
+ WTRELN(IBIN)=MAX(0.1D0,WTREL(IBIN)/WTRELS)
+ 200 CONTINUE
+ DO 230 IRED=1,NBIN-1
+ DO 220 IBIN=IRED+1,NBIN
+ IF(ABS(WTMAT(IRED,IRED)).LT.1D-20) THEN
+ MSOLV=0
+ GOTO 260
+ ENDIF
+ RQT=WTMAT(IBIN,IRED)/WTMAT(IRED,IRED)
+ WTREL(IBIN)=WTREL(IBIN)-RQT*WTREL(IRED)
+ DO 210 ICOE=IRED,NBIN
+ WTMAT(IBIN,ICOE)=WTMAT(IBIN,ICOE)-RQT*WTMAT(IRED,ICOE)
+ 210 CONTINUE
+ 220 CONTINUE
+ 230 CONTINUE
+ DO 250 IRED=NBIN,1,-1
+ DO 240 ICOE=IRED+1,NBIN
+ WTREL(IRED)=WTREL(IRED)-WTMAT(IRED,ICOE)*COEFU(ICOE)
+ 240 CONTINUE
+ COEFU(IRED)=WTREL(IRED)/WTMAT(IRED,IRED)
+ 250 CONTINUE
+ ENDIF
+
+C...Share evenly if failure.
+ 260 IF(MSOLV.EQ.0) THEN
+ DO 270 IBIN=1,NBIN
+ COEFU(IBIN)=1D0
+ WTRELN(IBIN)=0.1D0
+ IF(WTRELS.GT.0D0) WTRELN(IBIN)=MAX(0.1D0,
+ & WTREL(IBIN)/WTRELS)
+ 270 CONTINUE
+ ENDIF
+
+C...Normalize coefficients, with piece shared democratically.
+ COEFSU=0D0
+ WTRELS=0D0
+ DO 280 IBIN=1,NBIN
+ COEFU(IBIN)=MAX(0D0,COEFU(IBIN))
+ COEFSU=COEFSU+COEFU(IBIN)
+ WTRELS=WTRELS+WTRELN(IBIN)
+ 280 CONTINUE
+ IF(COEFSU.GT.0D0) THEN
+ DO 290 IBIN=1,NBIN
+ COEFO(IBIN)=PARP(122)/NBIN+(1D0-PARP(122))*0.5D0*
+ & (COEFU(IBIN)/COEFSU+WTRELN(IBIN)/WTRELS)
+ 290 CONTINUE
+ ELSE
+ DO 300 IBIN=1,NBIN
+ COEFO(IBIN)=1D0/NBIN
+ 300 CONTINUE
+ ENDIF
+ IF(IVAR.EQ.1) IOFF=0
+ IF(IVAR.EQ.2) IOFF=17
+ IF(IVAR.EQ.3) IOFF=7
+ IF(IVAR.EQ.4) IOFF=12
+ DO 310 IBIN=1,NBIN
+ ICOF=IOFF+IBIN
+ IF(IVAR.EQ.1) THEN
+ IF(IBIN.EQ.NBIN.AND.(MINT(72).LE.2.AND.IPEAK7.EQ.1)) THEN
+ ICOF=7
+ ENDIF
+ ENDIF
+ IF(IVAR.EQ.3.AND.IBIN.EQ.4.AND.MINT(45).NE.3) ICOF=ICOF+1
+ IF(IVAR.EQ.1.AND.IBIN.GE.7+IPEAK7.AND.MINT(72).EQ.3) THEN
+ COEFX(ISUB,IBIN-6-IPEAK7)=COEFO(IBIN)
+ ELSE
+ COEF(ISUB,ICOF)=COEFO(IBIN)
+ ENDIF
+ 310 CONTINUE
+
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5600) CVAR(IVAR),
+ & (COEFO(IBIN),IBIN=1,NBIN)
+
+ 320 CONTINUE
+
+C...Find two most promising maxima among points previously determined.
+ DO 330 J=1,4
+ IACCMX(J)=0
+ SIGSMX(J)=0D0
+ 330 CONTINUE
+ NMAX=0
+ DO 390 IACC=1,NACC
+ DO 340 J=1,30
+ VINT(10+J)=VINTPT(IACC,J)
+ 340 CONTINUE
+ IF(ISTSB.NE.5) THEN
+ CALL PYSIGH(NCHN,SIGS)
+ IF(MWTXS.EQ.1) THEN
+ CALL PYEVWT(WTXS)
+ SIGS=WTXS*SIGS
+ ENDIF
+ ELSE
+ SIGS=0D0
+ DO 350 IKIN3=1,MSTP(129)
+ CALL PYKMAP(5,0,0D0)
+ IF(MINT(51).EQ.1) GOTO 350
+ CALL PYSIGH(NCHN,SIGTMP)
+ IF(MWTXS.EQ.1) THEN
+ CALL PYEVWT(WTXS)
+ SIGTMP=WTXS*SIGTMP
+ ENDIF
+ IF(SIGTMP.GT.SIGS) SIGS=SIGTMP
+ 350 CONTINUE
+ ENDIF
+ IEQ=0
+ DO 360 IMV=1,NMAX
+ IF(ABS(SIGS-SIGSMX(IMV)).LT.1D-4*(SIGS+SIGSMX(IMV))) IEQ=IMV
+ 360 CONTINUE
+ IF(IEQ.EQ.0) THEN
+ DO 370 IMV=NMAX,1,-1
+ IIN=IMV+1
+ IF(SIGS.LE.SIGSMX(IMV)) GOTO 380
+ IACCMX(IMV+1)=IACCMX(IMV)
+ SIGSMX(IMV+1)=SIGSMX(IMV)
+ 370 CONTINUE
+ IIN=1
+ 380 IACCMX(IIN)=IACC
+ SIGSMX(IIN)=SIGS
+ IF(NMAX.LE.1) NMAX=NMAX+1
+ ENDIF
+ 390 CONTINUE
+
+C...Read out starting position for search.
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5700)
+ SIGSAM=SIGSMX(1)
+ DO 440 IMAX=1,NMAX
+ IACC=IACCMX(IMAX)
+ MTAU=MVARPT(IACC,1)
+ MTAUP=MVARPT(IACC,2)
+ MYST=MVARPT(IACC,3)
+ MCTH=MVARPT(IACC,4)
+ VTAU=0.5D0
+ VYST=0.5D0
+ VCTH=0.5D0
+ VTAUP=0.5D0
+
+C...Starting point and step size in parameter space.
+ DO 430 IRPT=1,2
+ DO 420 IVAR=1,4
+ IF(NPTS(IVAR).EQ.1) GOTO 420
+ IF(IVAR.EQ.1) VVAR=VTAU
+ IF(IVAR.EQ.2) VVAR=VTAUP
+ IF(IVAR.EQ.3) VVAR=VYST
+ IF(IVAR.EQ.4) VVAR=VCTH
+ IF(IVAR.EQ.1) MVAR=MTAU
+ IF(IVAR.EQ.2) MVAR=MTAUP
+ IF(IVAR.EQ.3) MVAR=MYST
+ IF(IVAR.EQ.4) MVAR=MCTH
+ IF(IRPT.EQ.1) VDEL=0.1D0
+ IF(IRPT.EQ.2) VDEL=MAX(0.01D0,MIN(0.05D0,VVAR-0.02D0,
+ & 0.98D0-VVAR))
+ IF(IRPT.EQ.1) VMAR=0.02D0
+ IF(IRPT.EQ.2) VMAR=0.002D0
+ IMOV0=1
+ IF(IRPT.EQ.1.AND.IVAR.EQ.1) IMOV0=0
+ DO 410 IMOV=IMOV0,8
+
+C...Define new point in parameter space.
+ IF(IMOV.EQ.0) THEN
+ INEW=2
+ VNEW=VVAR
+ ELSEIF(IMOV.EQ.1) THEN
+ INEW=3
+ VNEW=VVAR+VDEL
+ ELSEIF(IMOV.EQ.2) THEN
+ INEW=1
+ VNEW=VVAR-VDEL
+ ELSEIF(SIGSSM(3).GE.MAX(SIGSSM(1),SIGSSM(2)).AND.
+ & VVAR+2D0*VDEL.LT.1D0-VMAR) THEN
+ VVAR=VVAR+VDEL
+ SIGSSM(1)=SIGSSM(2)
+ SIGSSM(2)=SIGSSM(3)
+ INEW=3
+ VNEW=VVAR+VDEL
+ ELSEIF(SIGSSM(1).GE.MAX(SIGSSM(2),SIGSSM(3)).AND.
+ & VVAR-2D0*VDEL.GT.VMAR) THEN
+ VVAR=VVAR-VDEL
+ SIGSSM(3)=SIGSSM(2)
+ SIGSSM(2)=SIGSSM(1)
+ INEW=1
+ VNEW=VVAR-VDEL
+ ELSEIF(SIGSSM(3).GE.SIGSSM(1)) THEN
+ VDEL=0.5D0*VDEL
+ VVAR=VVAR+VDEL
+ SIGSSM(1)=SIGSSM(2)
+ INEW=2
+ VNEW=VVAR
+ ELSE
+ VDEL=0.5D0*VDEL
+ VVAR=VVAR-VDEL
+ SIGSSM(3)=SIGSSM(2)
+ INEW=2
+ VNEW=VVAR
+ ENDIF
+
+C...Convert to relevant variables and find derived new limits.
+ ILERR=0
+ IF(IVAR.EQ.1) THEN
+ VTAU=VNEW
+ CALL PYKMAP(1,MTAU,VTAU)
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) THEN
+ CALL PYKLIM(4)
+ IF(MINT(51).EQ.1) ILERR=1
+ ENDIF
+ ENDIF
+ IF(IVAR.LE.2.AND.ISTSB.GE.3.AND.ISTSB.LE.5.AND.
+ & ILERR.EQ.0) THEN
+ IF(IVAR.EQ.2) VTAUP=VNEW
+ CALL PYKMAP(4,MTAUP,VTAUP)
+ ENDIF
+ IF(IVAR.LE.2.AND.ILERR.EQ.0) THEN
+ CALL PYKLIM(2)
+ IF(MINT(51).EQ.1) ILERR=1
+ ENDIF
+ IF(IVAR.LE.3.AND.ILERR.EQ.0) THEN
+ IF(IVAR.EQ.3) VYST=VNEW
+ CALL PYKMAP(2,MYST,VYST)
+ CALL PYKLIM(3)
+ IF(MINT(51).EQ.1) ILERR=1
+ ENDIF
+ IF((ISTSB.EQ.2.OR.ISTSB.EQ.4.OR.ISTSB.EQ.6).AND.
+ & ILERR.EQ.0) THEN
+ IF(IVAR.EQ.4) VCTH=VNEW
+ CALL PYKMAP(3,MCTH,VCTH)
+ ENDIF
+ IF(ISUB.EQ.96) VINT(25)=VINT(21)*(1.-VINT(23)**2)
+
+C...Evaluate cross-section. Save new maximum. Final maximum.
+ IF(ILERR.NE.0) THEN
+ SIGS=0.
+ ELSEIF(ISTSB.NE.5) THEN
+ CALL PYSIGH(NCHN,SIGS)
+ IF(MWTXS.EQ.1) THEN
+ CALL PYEVWT(WTXS)
+ SIGS=WTXS*SIGS
+ ENDIF
+ ELSE
+ SIGS=0D0
+ DO 400 IKIN3=1,MSTP(129)
+ CALL PYKMAP(5,0,0D0)
+ IF(MINT(51).EQ.1) GOTO 400
+ CALL PYSIGH(NCHN,SIGTMP)
+ IF(MWTXS.EQ.1) THEN
+ CALL PYEVWT(WTXS)
+ SIGTMP=WTXS*SIGTMP
+ ENDIF
+ IF(SIGTMP.GT.SIGS) SIGS=SIGTMP
+ 400 CONTINUE
+ ENDIF
+ SIGSSM(INEW)=SIGS
+ IF(SIGS.GT.SIGSAM) SIGSAM=SIGS
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5800) IMAX,IVAR,MVAR,
+ & IMOV,VNEW,VINT(21),VINT(22),VINT(23),VINT(26),SIGS
+ 410 CONTINUE
+ 420 CONTINUE
+ 430 CONTINUE
+ 440 CONTINUE
+ IF(MSTP(121).EQ.1) SIGSAM=PARP(121)*SIGSAM
+ XSEC(ISUB,1)=1.05D0*SIGSAM
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) XSEC(ISUB,1)=
+ & WTGAGA*XSEC(ISUB,1)
+ 450 CONTINUE
+ IF(MSTP(173).EQ.1.AND.ISUB.NE.96) XSEC(ISUB,1)=
+ & PARP(174)*XSEC(ISUB,1)
+ IF(ISUB.NE.96) XSEC(0,1)=XSEC(0,1)+XSEC(ISUB,1)
+ 460 CONTINUE
+ MINT(51)=0
+
+C...Print summary table.
+ IF(MINT(121).EQ.1.AND.NPOSI.EQ.0) THEN
+ IF(MSTP(127).NE.1) THEN
+ WRITE(MSTU(11),5900)
+ CALL PYSTOP(1)
+ ELSE
+ WRITE(MSTU(11),6400)
+ MSTI(53)=1
+ ENDIF
+ ENDIF
+ IF(MSTP(122).GE.1) THEN
+ WRITE(MSTU(11),6000)
+ WRITE(MSTU(11),6100)
+ DO 470 ISUB=1,500
+ IF(MSUB(ISUB).NE.1.AND.ISUB.NE.96) GOTO 470
+ IF(ISUB.EQ.96.AND.MINT(50).EQ.0) GOTO 470
+ IF(ISUB.EQ.96.AND.MSUB(95).NE.1.AND.MOD(MSTP(81),10).LE.0)
+ & GOTO 470
+ IF(ISUB.EQ.96.AND.MINT(49).EQ.0.AND.MSTP(131).EQ.0) GOTO 470
+ IF(MSUB(95).EQ.1.AND.(ISUB.EQ.11.OR.ISUB.EQ.12.OR.ISUB.EQ.13
+ & .OR.ISUB.EQ.28.OR.ISUB.EQ.53.OR.ISUB.EQ.68)) GOTO 470
+ IF(MSUB(95).EQ.1.AND.ISUB.GE.381.AND.ISUB.LE.386) GOTO 470
+ WRITE(MSTU(11),6200) ISUB,PROC(ISUB),XSEC(ISUB,1)
+ 470 CONTINUE
+ WRITE(MSTU(11),6300)
+ ENDIF
+
+C...Format statements for maximization results.
+ 5000 FORMAT(/1X,'Coefficient optimization and maximum search for ',
+ &'subprocess no',I4/1X,'Coefficient modes tau',10X,'y*',9X,
+ &'cth',9X,'tau''',7X,'sigma')
+ 5100 FORMAT(1X,'Warning: requested subprocess ',I3,' has no allowed ',
+ &'phase space.'/1X,'Process switched off!')
+ 5200 FORMAT(1X,4I4,F12.8,F12.6,F12.7,F12.8,1P,D12.4)
+ 5300 FORMAT(1X,'Warning: requested subprocess ',I3,' has vanishing ',
+ &'cross-section.'/1X,'Process switched off!')
+ 5400 FORMAT(1X,'Coefficients of equation system to be solved for ',A4)
+ 5500 FORMAT(1X,1P,10D11.3)
+ 5600 FORMAT(1X,'Result for ',A4,':',9F9.4)
+ 5700 FORMAT(1X,'Maximum search for given coefficients'/2X,'MAX VAR ',
+ &'MOD MOV VNEW',7X,'tau',7X,'y*',8X,'cth',7X,'tau''',7X,'sigma')
+ 5800 FORMAT(1X,4I4,F8.4,F11.7,F9.3,F11.6,F11.7,1P,D12.4)
+ 5900 FORMAT(1X,'Error: no requested process has non-vanishing ',
+ &'cross-section.'/1X,'Execution stopped!')
+ 6000 FORMAT(/1X,8('*'),1X,'PYMAXI: summary of differential ',
+ &'cross-section maximum search',1X,8('*'))
+ 6100 FORMAT(/11X,58('=')/11X,'I',38X,'I',17X,'I'/11X,'I ISUB ',
+ &'Subprocess name',15X,'I Maximum value I'/11X,'I',38X,'I',
+ &17X,'I'/11X,58('=')/11X,'I',38X,'I',17X,'I')
+ 6200 FORMAT(11X,'I',2X,I3,3X,A28,2X,'I',2X,1P,D12.4,3X,'I')
+ 6300 FORMAT(11X,'I',38X,'I',17X,'I'/11X,58('='))
+ 6400 FORMAT(1X,'Error: no requested process has non-vanishing ',
+ &'cross-section.'/
+ &1X,'Execution will stop if you try to generate events.')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPILE
+C...Initializes multiplicity distribution and selects mutliplicity
+C...of pileup events, i.e. several events occuring at the same
+C...beam crossing.
+
+ SUBROUTINE PYPILE(MPILE)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ SAVE /PYDAT1/,/PYPARS/,/PYINT1/,/PYINT7/
+C...Local arrays and saved variables.
+ DIMENSION WTI(0:200)
+ SAVE IMIN,IMAX,WTI,WTS
+
+C...Sum of allowed cross-sections for pileup events.
+ IF(MPILE.EQ.1) THEN
+ VINT(131)=SIGT(0,0,5)
+ IF(MSTP(132).GE.2) VINT(131)=VINT(131)+SIGT(0,0,4)
+ IF(MSTP(132).GE.3) VINT(131)=VINT(131)+SIGT(0,0,2)+SIGT(0,0,3)
+ IF(MSTP(132).GE.4) VINT(131)=VINT(131)+SIGT(0,0,1)
+ IF(MSTP(133).LE.0) RETURN
+
+C...Initialize multiplicity distribution at maximum.
+ XNAVE=VINT(131)*PARP(131)
+ IF(XNAVE.GT.120D0) WRITE(MSTU(11),5000) XNAVE
+ INAVE=MAX(1,MIN(200,NINT(XNAVE)))
+ WTI(INAVE)=1D0
+ WTS=WTI(INAVE)
+ WTN=WTI(INAVE)*INAVE
+
+C...Find shape of multiplicity distribution below maximum.
+ IMIN=INAVE
+ DO 100 I=INAVE-1,1,-1
+ IF(MSTP(133).EQ.1) WTI(I)=WTI(I+1)*(I+1)/XNAVE
+ IF(MSTP(133).GE.2) WTI(I)=WTI(I+1)*I/XNAVE
+ IF(WTI(I).LT.1D-6) GOTO 110
+ WTS=WTS+WTI(I)
+ WTN=WTN+WTI(I)*I
+ IMIN=I
+ 100 CONTINUE
+
+C...Find shape of multiplicity distribution above maximum.
+ 110 IMAX=INAVE
+ DO 120 I=INAVE+1,200
+ IF(MSTP(133).EQ.1) WTI(I)=WTI(I-1)*XNAVE/I
+ IF(MSTP(133).GE.2) WTI(I)=WTI(I-1)*XNAVE/(I-1)
+ IF(WTI(I).LT.1D-6) GOTO 130
+ WTS=WTS+WTI(I)
+ WTN=WTN+WTI(I)*I
+ IMAX=I
+ 120 CONTINUE
+ 130 VINT(132)=XNAVE
+ VINT(133)=WTN/WTS
+ IF(MSTP(133).EQ.1.AND.IMIN.EQ.1) VINT(134)=
+ & WTS/(WTS+WTI(1)/XNAVE)
+ IF(MSTP(133).EQ.1.AND.IMIN.GT.1) VINT(134)=1D0
+ IF(MSTP(133).GE.2) VINT(134)=XNAVE
+
+C...Pick multiplicity of pileup events.
+ ELSE
+ IF(MSTP(133).LE.0) THEN
+ MINT(81)=MAX(1,MSTP(134))
+ ELSE
+ WTR=WTS*PYR(0)
+ DO 140 I=IMIN,IMAX
+ MINT(81)=I
+ WTR=WTR-WTI(I)
+ IF(WTR.LE.0D0) GOTO 150
+ 140 CONTINUE
+ 150 CONTINUE
+ ENDIF
+ ENDIF
+
+C...Format statement for error message.
+ 5000 FORMAT(1X,'Warning: requested average number of events per bunch',
+ &'crossing too large, ',1P,D12.4)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSAVE
+C...Saves and restores parameter and cross section values for the
+C...3 gamma-p and 6 (or 4, or 9, or 13) gamma-gamma alternatives.
+C...Also makes random choice between alternatives.
+
+ SUBROUTINE PYSAVE(ISAVE,IGA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ SAVE /PYSUBS/,/PYPARS/,/PYINT1/,/PYINT2/,/PYINT5/,/PYINT7/
+C...Local arrays and saved variables.
+ DIMENSION NCP(15),NSUBCP(15,20),MSUBCP(15,20),COEFCP(15,20,20),
+ &NGENCP(15,0:20,3),XSECCP(15,0:20,3),SIGTCP(15,0:6,0:6,0:5),
+ &INTCP(15,20),RECP(15,20)
+ SAVE NCP,NSUBCP,MSUBCP,COEFCP,NGENCP,XSECCP,SIGTCP,INTCP,RECP
+
+C...Save list of subprocesses and cross-section information.
+ IF(ISAVE.EQ.1) THEN
+ ICP=0
+ DO 120 I=1,500
+ IF(MSUB(I).EQ.0.AND.I.NE.96.AND.I.NE.97) GOTO 120
+ ICP=ICP+1
+ NSUBCP(IGA,ICP)=I
+ MSUBCP(IGA,ICP)=MSUB(I)
+ DO 100 J=1,20
+ COEFCP(IGA,ICP,J)=COEF(I,J)
+ 100 CONTINUE
+ DO 110 J=1,3
+ NGENCP(IGA,ICP,J)=NGEN(I,J)
+ XSECCP(IGA,ICP,J)=XSEC(I,J)
+ 110 CONTINUE
+ 120 CONTINUE
+ NCP(IGA)=ICP
+ DO 130 J=1,3
+ NGENCP(IGA,0,J)=NGEN(0,J)
+ XSECCP(IGA,0,J)=XSEC(0,J)
+ 130 CONTINUE
+ DO 160 I1=0,6
+ DO 150 I2=0,6
+ DO 140 J=0,5
+ SIGTCP(IGA,I1,I2,J)=SIGT(I1,I2,J)
+ 140 CONTINUE
+ 150 CONTINUE
+ 160 CONTINUE
+
+C...Save various common process variables.
+ DO 170 J=1,10
+ INTCP(IGA,J)=MINT(40+J)
+ 170 CONTINUE
+ INTCP(IGA,11)=MINT(101)
+ INTCP(IGA,12)=MINT(102)
+ INTCP(IGA,13)=MINT(107)
+ INTCP(IGA,14)=MINT(108)
+ INTCP(IGA,15)=MINT(123)
+ RECP(IGA,1)=CKIN(3)
+ RECP(IGA,2)=VINT(318)
+
+C...Save cross-section information only.
+ ELSEIF(ISAVE.EQ.2) THEN
+ DO 190 ICP=1,NCP(IGA)
+ I=NSUBCP(IGA,ICP)
+ DO 180 J=1,3
+ NGENCP(IGA,ICP,J)=NGEN(I,J)
+ XSECCP(IGA,ICP,J)=XSEC(I,J)
+ 180 CONTINUE
+ 190 CONTINUE
+ DO 200 J=1,3
+ NGENCP(IGA,0,J)=NGEN(0,J)
+ XSECCP(IGA,0,J)=XSEC(0,J)
+ 200 CONTINUE
+
+C...Choose between allowed alternatives.
+ ELSEIF(ISAVE.EQ.3.OR.ISAVE.EQ.4) THEN
+ IF(ISAVE.EQ.4) THEN
+ XSUMCP=0D0
+ DO 210 IG=1,MINT(121)
+ XSUMCP=XSUMCP+XSECCP(IG,0,1)
+ 210 CONTINUE
+ XSUMCP=XSUMCP*PYR(0)
+ DO 220 IG=1,MINT(121)
+ IGA=IG
+ XSUMCP=XSUMCP-XSECCP(IG,0,1)
+ IF(XSUMCP.LE.0D0) GOTO 230
+ 220 CONTINUE
+ 230 CONTINUE
+ ENDIF
+
+C...Restore cross-section information.
+ DO 240 I=1,500
+ MSUB(I)=0
+ 240 CONTINUE
+ DO 270 ICP=1,NCP(IGA)
+ I=NSUBCP(IGA,ICP)
+ MSUB(I)=MSUBCP(IGA,ICP)
+ DO 250 J=1,20
+ COEF(I,J)=COEFCP(IGA,ICP,J)
+ 250 CONTINUE
+ DO 260 J=1,3
+ NGEN(I,J)=NGENCP(IGA,ICP,J)
+ XSEC(I,J)=XSECCP(IGA,ICP,J)
+ 260 CONTINUE
+ 270 CONTINUE
+ DO 280 J=1,3
+ NGEN(0,J)=NGENCP(IGA,0,J)
+ XSEC(0,J)=XSECCP(IGA,0,J)
+ 280 CONTINUE
+ DO 310 I1=0,6
+ DO 300 I2=0,6
+ DO 290 J=0,5
+ SIGT(I1,I2,J)=SIGTCP(IGA,I1,I2,J)
+ 290 CONTINUE
+ 300 CONTINUE
+ 310 CONTINUE
+
+C...Restore various common process variables.
+ DO 320 J=1,10
+ MINT(40+J)=INTCP(IGA,J)
+ 320 CONTINUE
+ MINT(101)=INTCP(IGA,11)
+ MINT(102)=INTCP(IGA,12)
+ MINT(107)=INTCP(IGA,13)
+ MINT(108)=INTCP(IGA,14)
+ MINT(123)=INTCP(IGA,15)
+ CKIN(3)=RECP(IGA,1)
+ CKIN(1)=2D0*CKIN(3)
+ VINT(318)=RECP(IGA,2)
+
+C...Sum up cross-section info (for PYSTAT).
+ ELSEIF(ISAVE.EQ.5) THEN
+ DO 330 I=1,500
+ MSUB(I)=0
+ NGEN(I,1)=0
+ NGEN(I,3)=0
+ XSEC(I,3)=0D0
+ 330 CONTINUE
+ NGEN(0,1)=0
+ NGEN(0,2)=0
+ NGEN(0,3)=0
+ XSEC(0,3)=0
+ DO 350 IG=1,MINT(121)
+ DO 340 ICP=1,NCP(IG)
+ I=NSUBCP(IG,ICP)
+ IF(MSUBCP(IG,ICP).EQ.1) MSUB(I)=1
+ NGEN(I,1)=NGEN(I,1)+NGENCP(IG,ICP,1)
+ NGEN(I,3)=NGEN(I,3)+NGENCP(IG,ICP,3)
+ XSEC(I,3)=XSEC(I,3)+XSECCP(IG,ICP,3)
+ 340 CONTINUE
+ NGEN(0,1)=NGEN(0,1)+NGENCP(IG,0,1)
+ NGEN(0,2)=NGEN(0,2)+NGENCP(IG,0,2)
+ NGEN(0,3)=NGEN(0,3)+NGENCP(IG,0,3)
+ XSEC(0,3)=XSEC(0,3)+XSECCP(IG,0,3)
+ 350 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGAGA
+C...For lepton beams it gives photon-hadron or photon-photon systems
+C...to be treated with the ordinary machinery and combines this with a
+C...description of the lepton -> lepton + photon branching.
+
+ SUBROUTINE PYGAGA(IGAGA,WTGAGA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT5/
+C...Local variables and data statement.
+ DIMENSION PMS(2),XMIN(2),XMAX(2),Q2MIN(2),Q2MAX(2),PMC(3),
+ &X(2),Q2(2),Y(2),THETA(2),PHI(2),PT(2),BETA(3)
+ SAVE PMS,XMIN,XMAX,Q2MIN,Q2MAX,PMC,X,Q2,THETA,PHI,PT,W2MIN
+ DATA EPS/1D-4/
+
+C...Initialize generation of photons inside leptons.
+ IF(IGAGA.EQ.1) THEN
+
+C...Save quantities on incoming lepton system.
+ VINT(301)=VINT(1)
+ VINT(302)=VINT(2)
+ PMS(1)=VINT(303)**2
+ IF(MINT(141).EQ.0) PMS(1)=SIGN(VINT(3)**2,VINT(3))
+ PMS(2)=VINT(304)**2
+ IF(MINT(142).EQ.0) PMS(2)=SIGN(VINT(4)**2,VINT(4))
+ PMC(3)=VINT(302)-PMS(1)-PMS(2)
+ W2MIN=MAX(CKIN(77),2D0*CKIN(3),2D0*CKIN(5))**2
+
+C...Calculate range of x and Q2 values allowed in generation.
+ DO 100 I=1,2
+ PMC(I)=VINT(302)+PMS(I)-PMS(3-I)
+ IF(MINT(140+I).NE.0) THEN
+ XMIN(I)=MAX(CKIN(59+2*I),EPS)
+ XMAX(I)=MIN(CKIN(60+2*I),1D0-2D0*VINT(301)*SQRT(PMS(I))/
+ & PMC(I),1D0-EPS)
+ YMIN=MAX(CKIN(71+2*I),EPS)
+ YMAX=MIN(CKIN(72+2*I),1D0-EPS)
+ IF(CKIN(64+2*I).GT.0D0) XMIN(I)=MAX(XMIN(I),
+ & (YMIN*PMC(3)-CKIN(64+2*I))/PMC(I))
+ XMAX(I)=MIN(XMAX(I),(YMAX*PMC(3)-CKIN(63+2*I))/PMC(I))
+ THEMIN=MAX(CKIN(67+2*I),0D0)
+ THEMAX=MIN(CKIN(68+2*I),PARU(1))
+ IF(CKIN(68+2*I).LT.0D0) THEMAX=PARU(1)
+ Q2MIN(I)=MAX(CKIN(63+2*I),XMIN(I)**2*PMS(I)/(1D0-XMIN(I))+
+ & ((1D0-XMAX(I))*(VINT(302)-2D0*PMS(3-I))-
+ & 2D0*PMS(I)/(1D0-XMAX(I)))*SIN(THEMIN/2D0)**2,0D0)
+ Q2MAX(I)=XMAX(I)**2*PMS(I)/(1D0-XMAX(I))+
+ & ((1D0-XMIN(I))*(VINT(302)-2D0*PMS(3-I))-
+ & 2D0*PMS(I)/(1D0-XMIN(I)))*SIN(THEMAX/2D0)**2
+ IF(CKIN(64+2*I).GT.0D0) Q2MAX(I)=MIN(CKIN(64+2*I),Q2MAX(I))
+C...W limits when lepton on one side only.
+ IF(MINT(143-I).EQ.0) THEN
+ XMIN(I)=MAX(XMIN(I),(W2MIN-PMS(3-I))/PMC(I))
+ IF(CKIN(78).GT.0D0) XMAX(I)=MIN(XMAX(I),
+ & (CKIN(78)**2-PMS(3-I))/PMC(I))
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+
+C...W limits when lepton on both sides.
+ IF(MINT(141).NE.0.AND.MINT(142).NE.0) THEN
+ IF(CKIN(78).GT.0D0) XMAX(1)=MIN(XMAX(1),
+ & (CKIN(78)**2+PMC(3)-PMC(2)*XMIN(2))/PMC(1))
+ IF(CKIN(78).GT.0D0) XMAX(2)=MIN(XMAX(2),
+ & (CKIN(78)**2+PMC(3)-PMC(1)*XMIN(1))/PMC(2))
+ IF(IABS(MINT(141)).NE.IABS(MINT(142))) THEN
+ XMIN(1)=MAX(XMIN(1),(PMS(1)-PMS(2)+VINT(302)*(W2MIN-
+ & PMS(1)-PMS(2))/(PMC(2)*XMAX(2)+PMS(1)-PMS(2)))/PMC(1))
+ XMIN(2)=MAX(XMIN(2),(PMS(2)-PMS(1)+VINT(302)*(W2MIN-
+ & PMS(1)-PMS(2))/(PMC(1)*XMAX(1)+PMS(2)-PMS(1)))/PMC(2))
+ ELSE
+ XMIN(1)=MAX(XMIN(1),W2MIN/(VINT(302)*XMAX(2)))
+ XMIN(2)=MAX(XMIN(2),W2MIN/(VINT(302)*XMAX(1)))
+ ENDIF
+ ENDIF
+
+C...Q2 and W values and photon flux weight factors for initialization.
+ ELSEIF(IGAGA.EQ.2) THEN
+ ISUB=MINT(1)
+ MINT(15)=0
+ MINT(16)=0
+
+C...W value for photon on one or both sides, and for processes
+C...with gamma-gamma cross section peaked at small shat.
+ IF(MINT(141).NE.0.AND.MINT(142).EQ.0) THEN
+ VINT(2)=VINT(302)+PMS(1)-PMC(1)*(1D0-XMAX(1))
+ ELSEIF(MINT(141).EQ.0.AND.MINT(142).NE.0) THEN
+ VINT(2)=VINT(302)+PMS(2)-PMC(2)*(1D0-XMAX(2))
+ ELSEIF(ISUB.GE.137.AND.ISUB.LE.140) THEN
+ VINT(2)=MAX(CKIN(77)**2,12D0*MAX(CKIN(3),CKIN(5))**2)
+ IF(CKIN(78).GT.0D0) VINT(2)=MIN(VINT(2),CKIN(78)**2)
+ ELSE
+ VINT(2)=XMAX(1)*XMAX(2)*VINT(302)
+ IF(CKIN(78).GT.0D0) VINT(2)=MIN(VINT(2),CKIN(78)**2)
+ ENDIF
+ VINT(1)=SQRT(MAX(0D0,VINT(2)))
+
+C...Upper estimate of photon flux weight factor.
+C...Initialization Q2 scale. Flag incoming unresolved photon.
+ WTGAGA=1D0
+ DO 110 I=1,2
+ IF(MINT(140+I).NE.0) THEN
+ WTGAGA=WTGAGA*2D0*(PARU(101)/PARU(2))*
+ & LOG(XMAX(I)/XMIN(I))*LOG(Q2MAX(I)/Q2MIN(I))
+ IF(ISUB.EQ.99.AND.MINT(106+I).EQ.4.AND.MINT(109-I).EQ.3)
+ & THEN
+ Q2INIT=5D0+Q2MIN(3-I)
+ ELSEIF(ISUB.EQ.99.AND.MINT(106+I).EQ.4) THEN
+ Q2INIT=PMAS(PYCOMP(113),1)**2+Q2MIN(3-I)
+ ELSEIF(ISUB.EQ.132.OR.ISUB.EQ.134.OR.ISUB.EQ.136) THEN
+ Q2INIT=MAX(CKIN(1),2D0*CKIN(3),2D0*CKIN(5))**2/3D0
+ ELSEIF((ISUB.EQ.138.AND.I.EQ.2).OR.
+ & (ISUB.EQ.139.AND.I.EQ.1)) THEN
+ Q2INIT=VINT(2)/3D0
+ ELSEIF(ISUB.EQ.140) THEN
+ Q2INIT=VINT(2)/2D0
+ ELSE
+ Q2INIT=Q2MIN(I)
+ ENDIF
+ VINT(2+I)=-SQRT(MAX(Q2MIN(I),MIN(Q2MAX(I),Q2INIT)))
+ IF(MSTP(14).EQ.0.OR.(ISUB.GE.131.AND.ISUB.LE.140))
+ & MINT(14+I)=22
+ VINT(306+I)=VINT(2+I)**2
+ ENDIF
+ 110 CONTINUE
+ VINT(320)=WTGAGA
+
+C...Update pTmin and cross section information.
+ IF(MSTP(82).LE.1) THEN
+ PTMN=PARP(81)*(VINT(1)/PARP(89))**PARP(90)
+ ELSE
+ PTMN=PARP(82)*(VINT(1)/PARP(89))**PARP(90)
+ ENDIF
+ VINT(149)=4D0*PTMN**2/VINT(2)
+ VINT(154)=PTMN
+ CALL PYXTOT
+ VINT(318)=VINT(317)
+
+C...Generate photons inside leptons and
+C...calculate photon flux weight factors.
+ ELSEIF(IGAGA.EQ.3) THEN
+ ISUB=MINT(1)
+ MINT(15)=0
+ MINT(16)=0
+
+C...Generate phase space point and check against cuts.
+ LOOP=0
+ 120 LOOP=LOOP+1
+ DO 130 I=1,2
+ IF(MINT(140+I).NE.0) THEN
+C...Pick x and Q2
+ X(I)=XMIN(I)*(XMAX(I)/XMIN(I))**PYR(0)
+ Q2(I)=Q2MIN(I)*(Q2MAX(I)/Q2MIN(I))**PYR(0)
+C...Cuts on internal consistency in x and Q2.
+ IF(Q2(I).LT.X(I)**2*PMS(I)/(1D0-X(I))) GOTO 120
+ IF(Q2(I).GT.(1D0-X(I))*(VINT(302)-2D0*PMS(3-I))-
+ & (2D0-X(I)**2)*PMS(I)/(1D0-X(I))) GOTO 120
+C...Cuts on y and theta.
+ Y(I)=(PMC(I)*X(I)+Q2(I))/PMC(3)
+ IF(Y(I).LT.CKIN(71+2*I).OR.Y(I).GT.CKIN(72+2*I)) GOTO 120
+ RAT=((1D0-X(I))*Q2(I)-X(I)**2*PMS(I))/
+ & ((1D0-X(I))**2*(VINT(302)-2D0*PMS(3-I)-2D0*PMS(I)))
+ THETA(I)=2D0*ASIN(SQRT(MAX(0D0,MIN(1D0,RAT))))
+ IF(THETA(I).LT.CKIN(67+2*I)) GOTO 120
+ IF(CKIN(68+2*I).GT.0D0.AND.THETA(I).GT.CKIN(68+2*I))
+ & GOTO 120
+
+C...Phi angle isotropic. Reconstruct pT.
+ PHI(I)=PARU(2)*PYR(0)
+ PT(I)=SQRT(((1D0-X(I))*PMC(I))**2/(4D0*VINT(302))-
+ & PMS(I))*SIN(THETA(I))
+
+C...Store info on variables selected, for documentation purposes.
+ VINT(2+I)=-SQRT(Q2(I))
+ VINT(304+I)=X(I)
+ VINT(306+I)=Q2(I)
+ VINT(308+I)=Y(I)
+ VINT(310+I)=THETA(I)
+ VINT(312+I)=PHI(I)
+ ELSE
+ VINT(304+I)=1D0
+ VINT(306+I)=0D0
+ VINT(308+I)=1D0
+ VINT(310+I)=0D0
+ VINT(312+I)=0D0
+ ENDIF
+ 130 CONTINUE
+
+C...Cut on W combines info from two sides.
+ IF(MINT(141).NE.0.AND.MINT(142).NE.0) THEN
+ W2=-Q2(1)-Q2(2)+0.5D0*X(1)*PMC(1)*X(2)*PMC(2)/VINT(302)-
+ & 2D0*PT(1)*PT(2)*COS(PHI(1)-PHI(2))+2D0*
+ & SQRT((0.5D0*X(1)*PMC(1)/VINT(301))**2+Q2(1)-PT(1)**2)*
+ & SQRT((0.5D0*X(2)*PMC(2)/VINT(301))**2+Q2(2)-PT(2)**2)
+ IF(W2.LT.W2MIN) GOTO 120
+ IF(CKIN(78).GT.0D0.AND.W2.GT.CKIN(78)**2) GOTO 120
+ PMS1=-Q2(1)
+ PMS2=-Q2(2)
+ ELSEIF(MINT(141).NE.0) THEN
+ W2=(VINT(302)+PMS(1))*X(1)+PMS(2)*(1D0-X(1))
+ PMS1=-Q2(1)
+ PMS2=PMS(2)
+ ELSEIF(MINT(142).NE.0) THEN
+ W2=(VINT(302)+PMS(2))*X(2)+PMS(1)*(1D0-X(2))
+ PMS1=PMS(1)
+ PMS2=-Q2(2)
+ ENDIF
+
+C...Store kinematics info for photon(s) in subsystem cm frame.
+ VINT(2)=W2
+ VINT(1)=SQRT(W2)
+ VINT(291)=0D0
+ VINT(292)=0D0
+ VINT(293)=0.5D0*SQRT((W2-PMS1-PMS2)**2-4D0*PMS1*PMS2)/VINT(1)
+ VINT(294)=0.5D0*(W2+PMS1-PMS2)/VINT(1)
+ VINT(295)=SIGN(SQRT(ABS(PMS1)),PMS1)
+ VINT(296)=0D0
+ VINT(297)=0D0
+ VINT(298)=-VINT(293)
+ VINT(299)=0.5D0*(W2+PMS2-PMS1)/VINT(1)
+ VINT(300)=SIGN(SQRT(ABS(PMS2)),PMS2)
+
+C...Assign weight for photon flux; different for transverse and
+C...longitudinal photons. Flag incoming unresolved photon.
+ WTGAGA=1D0
+ DO 140 I=1,2
+ IF(MINT(140+I).NE.0) THEN
+ WTGAGA=WTGAGA*2D0*(PARU(101)/PARU(2))*
+ & LOG(XMAX(I)/XMIN(I))*LOG(Q2MAX(I)/Q2MIN(I))
+ IF(MSTP(16).EQ.0) THEN
+ XY=X(I)
+ ELSE
+ WTGAGA=WTGAGA*X(I)/Y(I)
+ XY=Y(I)
+ ENDIF
+ IF(ISUB.EQ.132.OR.ISUB.EQ.134.OR.ISUB.EQ.136) THEN
+ WTGAGA=WTGAGA*(1D0-XY)
+ ELSEIF(I.EQ.1.AND.(ISUB.EQ.139.OR.ISUB.EQ.140)) THEN
+ WTGAGA=WTGAGA*(1D0-XY)
+ ELSEIF(I.EQ.2.AND.(ISUB.EQ.138.OR.ISUB.EQ.140)) THEN
+ WTGAGA=WTGAGA*(1D0-XY)
+ ELSE
+ WTGAGA=WTGAGA*(0.5D0*(1D0+(1D0-XY)**2)-
+ & PMS(I)*XY**2/Q2(I))
+ ENDIF
+ IF(MINT(106+I).EQ.0) MINT(14+I)=22
+ ENDIF
+ 140 CONTINUE
+ VINT(319)=WTGAGA
+ MINT(143)=LOOP
+
+C...Update pTmin and cross section information.
+ IF(MSTP(82).LE.1) THEN
+ PTMN=PARP(81)*(VINT(1)/PARP(89))**PARP(90)
+ ELSE
+ PTMN=PARP(82)*(VINT(1)/PARP(89))**PARP(90)
+ ENDIF
+ VINT(149)=4D0*PTMN**2/VINT(2)
+ VINT(154)=PTMN
+ CALL PYXTOT
+
+C...Reconstruct kinematics of photons inside leptons.
+ ELSEIF(IGAGA.EQ.4) THEN
+
+C...Make place for incoming particles and scattered leptons.
+ MOVE=3
+ IF(MINT(141).NE.0.AND.MINT(142).NE.0) MOVE=4
+ MINT(4)=MINT(4)+MOVE
+ DO 160 I=MINT(84)-MOVE,MINT(83)+1,-1
+ IF(K(I,1).EQ.21) THEN
+ DO 150 J=1,5
+ K(I+MOVE,J)=K(I,J)
+ P(I+MOVE,J)=P(I,J)
+ V(I+MOVE,J)=V(I,J)
+ 150 CONTINUE
+ IF(K(I,3).GT.MINT(83).AND.K(I,3).LE.MINT(84))
+ & K(I+MOVE,3)=K(I,3)+MOVE
+ IF(K(I,4).GT.MINT(83).AND.K(I,4).LE.MINT(84))
+ & K(I+MOVE,4)=K(I,4)+MOVE
+ IF(K(I,5).GT.MINT(83).AND.K(I,5).LE.MINT(84))
+ & K(I+MOVE,5)=K(I,5)+MOVE
+ ENDIF
+ 160 CONTINUE
+ DO 170 I=MINT(84)+1,N
+ IF(K(I,3).GT.MINT(83).AND.K(I,3).LE.MINT(84))
+ & K(I,3)=K(I,3)+MOVE
+ 170 CONTINUE
+
+C...Fill in incoming particles.
+ DO 190 I=MINT(83)+1,MINT(83)+MOVE
+ DO 180 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 180 CONTINUE
+ 190 CONTINUE
+ DO 200 I=1,2
+ K(MINT(83)+I,1)=21
+ IF(MINT(140+I).NE.0) THEN
+ K(MINT(83)+I,2)=MINT(140+I)
+ P(MINT(83)+I,5)=VINT(302+I)
+ ELSE
+ K(MINT(83)+I,2)=MINT(10+I)
+ P(MINT(83)+I,5)=VINT(2+I)
+ ENDIF
+ P(MINT(83)+I,3)=0.5D0*SQRT((PMC(3)**2-4D0*PMS(1)*PMS(2))/
+ & VINT(302))*(-1D0)**(I+1)
+ P(MINT(83)+I,4)=0.5D0*PMC(I)/VINT(301)
+ 200 CONTINUE
+
+C...New mother-daughter relations in documentation section.
+ IF(MINT(141).NE.0.AND.MINT(142).NE.0) THEN
+ K(MINT(83)+1,4)=MINT(83)+3
+ K(MINT(83)+1,5)=MINT(83)+5
+ K(MINT(83)+2,4)=MINT(83)+4
+ K(MINT(83)+2,5)=MINT(83)+6
+ K(MINT(83)+3,3)=MINT(83)+1
+ K(MINT(83)+5,3)=MINT(83)+1
+ K(MINT(83)+4,3)=MINT(83)+2
+ K(MINT(83)+6,3)=MINT(83)+2
+ ELSEIF(MINT(141).NE.0) THEN
+ K(MINT(83)+1,4)=MINT(83)+3
+ K(MINT(83)+1,5)=MINT(83)+4
+ K(MINT(83)+2,4)=MINT(83)+5
+ K(MINT(83)+3,3)=MINT(83)+1
+ K(MINT(83)+4,3)=MINT(83)+1
+ K(MINT(83)+5,3)=MINT(83)+2
+ ELSEIF(MINT(142).NE.0) THEN
+ K(MINT(83)+1,4)=MINT(83)+4
+ K(MINT(83)+2,4)=MINT(83)+3
+ K(MINT(83)+2,5)=MINT(83)+5
+ K(MINT(83)+3,3)=MINT(83)+2
+ K(MINT(83)+4,3)=MINT(83)+1
+ K(MINT(83)+5,3)=MINT(83)+2
+ ENDIF
+
+C...Fill scattered lepton(s).
+ DO 210 I=1,2
+ IF(MINT(140+I).NE.0) THEN
+ LSC=MINT(83)+MIN(I+2,MOVE)
+ K(LSC,1)=21
+ K(LSC,2)=MINT(140+I)
+ P(LSC,1)=PT(I)*COS(PHI(I))
+ P(LSC,2)=PT(I)*SIN(PHI(I))
+ P(LSC,4)=(1D0-X(I))*P(MINT(83)+I,4)
+ P(LSC,3)=SQRT(P(LSC,4)**2-PMS(I))*COS(THETA(I))*
+ & (-1D0)**(I-1)
+ P(LSC,5)=VINT(302+I)
+ ENDIF
+ 210 CONTINUE
+
+C...Find incoming four-vectors to subprocess.
+ K(N+1,1)=21
+ IF(MINT(141).NE.0) THEN
+ DO 220 J=1,4
+ P(N+1,J)=P(MINT(83)+1,J)-P(MINT(83)+3,J)
+ 220 CONTINUE
+ ELSE
+ DO 230 J=1,4
+ P(N+1,J)=P(MINT(83)+1,J)
+ 230 CONTINUE
+ ENDIF
+ K(N+2,1)=21
+ IF(MINT(142).NE.0) THEN
+ DO 240 J=1,4
+ P(N+2,J)=P(MINT(83)+2,J)-P(MINT(83)+MOVE,J)
+ 240 CONTINUE
+ ELSE
+ DO 250 J=1,4
+ P(N+2,J)=P(MINT(83)+2,J)
+ 250 CONTINUE
+ ENDIF
+
+C...Define boost and rotation between hadronic subsystem and
+C...collision rest frame; boost hadronic subsystem to this frame.
+ DO 260 J=1,3
+ BETA(J)=(P(N+1,J)+P(N+2,J))/(P(N+1,4)+P(N+2,4))
+ 260 CONTINUE
+ CALL PYROBO(N+1,N+2,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+ BPHI=PYANGL(P(N+1,1),P(N+1,2))
+ CALL PYROBO(N+1,N+2,0D0,-BPHI,0D0,0D0,0D0)
+ BTHETA=PYANGL(P(N+1,3),P(N+1,1))
+ CALL PYROBO(MINT(83)+MOVE+1,N,BTHETA,BPHI,BETA(1),BETA(2),
+ & BETA(3))
+
+C...Add on scattered leptons to final state.
+ DO 280 I=1,2
+ IF(MINT(140+I).NE.0) THEN
+ LSC=MINT(83)+MIN(I+2,MOVE)
+ N=N+1
+ DO 270 J=1,5
+ K(N,J)=K(LSC,J)
+ P(N,J)=P(LSC,J)
+ V(N,J)=V(LSC,J)
+ 270 CONTINUE
+ K(N,1)=1
+ K(N,3)=LSC
+ ENDIF
+ 280 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRAND
+C...Generates quantities characterizing the high-pT scattering at the
+C...parton level according to the matrix elements. Chooses incoming,
+C...reacting partons, their momentum fractions and one of the possible
+C...subprocesses.
+
+ SUBROUTINE PYRAND
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+
+C...User process initialization and event commonblocks.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ INTEGER MAXNUP
+ PARAMETER (MAXNUP=500)
+ INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+ DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+ COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+ &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+ &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+ SAVE /HEPRUP/,/HEPEUP/
+
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYTCCO/COEFX(194:380,2)
+ COMMON/TCPARA/IRES,JRES,XMAS(3),XWID(3),YMAS(2),YWID(2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT2/,/PYINT3/,/PYINT4/,/PYINT5/,/PYINT7/,/PYMSSM/,/PYTCCO/,
+ &/TCPARA/
+C...Local arrays.
+ DIMENSION XPQ(-25:25),PMM(2),PDIF(4),BHAD(4),PMMN(2)
+
+C...Parameters and data used in elastic/diffractive treatment.
+ DATA EPS/0.0808D0/, ALP/0.25D0/, CRES/2D0/, PMRC/1.062D0/,
+ &SMP/0.880D0/, BHAD/2.3D0,1.4D0,1.4D0,0.23D0/
+
+C...Initial values, specifically for (first) semihard interaction.
+ MINT(10)=0
+ MINT(17)=0
+ MINT(18)=0
+ VINT(143)=1D0
+ VINT(144)=1D0
+ VINT(157)=0D0
+ VINT(158)=0D0
+ MFAIL=0
+ IF(MSTP(171).EQ.1.AND.MSTP(172).EQ.2) MFAIL=1
+ ISUB=0
+ ISTSB=0
+ LOOP=0
+ 100 LOOP=LOOP+1
+ MINT(51)=0
+ MINT(143)=1
+ VINT(97)=1D0
+
+C...Start by assuming incoming photon is entering subprocess.
+ IF(MINT(11).EQ.22) THEN
+ MINT(15)=22
+ VINT(307)=VINT(3)**2
+ ENDIF
+ IF(MINT(12).EQ.22) THEN
+ MINT(16)=22
+ VINT(308)=VINT(4)**2
+ ENDIF
+ MINT(103)=MINT(11)
+ MINT(104)=MINT(12)
+
+C...Choice of process type - first event of pileup.
+ INMULT=0
+ IF(MINT(82).EQ.1.AND.ISUB.GE.91.AND.ISUB.LE.96) THEN
+ ELSEIF(MINT(82).EQ.1) THEN
+
+C...For gamma-p or gamma-gamma first pick between alternatives.
+ IGA=0
+ IF(MINT(121).GT.1) CALL PYSAVE(4,IGA)
+ MINT(122)=IGA
+
+C...For real gamma + gamma with different nature, flip at random.
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22.AND.MINT(123).GE.4.AND.
+ & MSTP(14).LE.10.AND.PYR(0).GT.0.5D0) THEN
+ MINTSV=MINT(41)
+ MINT(41)=MINT(42)
+ MINT(42)=MINTSV
+ MINTSV=MINT(45)
+ MINT(45)=MINT(46)
+ MINT(46)=MINTSV
+ MINTSV=MINT(107)
+ MINT(107)=MINT(108)
+ MINT(108)=MINTSV
+ IF(MINT(47).EQ.2.OR.MINT(47).EQ.3) MINT(47)=5-MINT(47)
+ ENDIF
+
+C...Pick process type, possibly by user process machinery.
+C...(If the latter, also event will be picked here.)
+ IF(MINT(111).GE.11.AND.IABS(IDWTUP).EQ.2.AND.LOOP.GE.2) THEN
+ CALL UPEVNT
+ CALL PYUPRE
+ ELSEIF(MINT(111).GE.11.AND.IABS(IDWTUP).GE.3) THEN
+ CALL UPEVNT
+ CALL PYUPRE
+ ISUB=0
+ 110 ISUB=ISUB+1
+ IF((ISET(ISUB).NE.11.OR.KFPR(ISUB,2).NE.IDPRUP).AND.
+ & ISUB.LT.500) GOTO 110
+ ELSE
+ RSUB=XSEC(0,1)*PYR(0)
+ DO 120 I=1,500
+ IF(MSUB(I).NE.1.OR.I.EQ.96) GOTO 120
+ ISUB=I
+ RSUB=RSUB-XSEC(I,1)
+ IF(RSUB.LE.0D0) GOTO 130
+ 120 CONTINUE
+ 130 IF(ISUB.EQ.95) ISUB=96
+ IF(ISUB.EQ.96) INMULT=1
+ IF(ISET(ISUB).EQ.11) THEN
+ IDPRUP=KFPR(ISUB,2)
+ CALL UPEVNT
+ CALL PYUPRE
+ ENDIF
+ ENDIF
+
+C...Choice of inclusive process type - pileup events.
+ ELSEIF(MINT(82).GE.2.AND.ISUB.EQ.0) THEN
+ RSUB=VINT(131)*PYR(0)
+ ISUB=96
+ IF(RSUB.GT.SIGT(0,0,5)) ISUB=94
+ IF(RSUB.GT.SIGT(0,0,5)+SIGT(0,0,4)) ISUB=93
+ IF(RSUB.GT.SIGT(0,0,5)+SIGT(0,0,4)+SIGT(0,0,3)) ISUB=92
+ IF(RSUB.GT.SIGT(0,0,5)+SIGT(0,0,4)+SIGT(0,0,3)+SIGT(0,0,2))
+ & ISUB=91
+ IF(ISUB.EQ.96) INMULT=1
+ ENDIF
+
+C...Choice of photon energy and flux factor inside lepton.
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) THEN
+ CALL PYGAGA(3,WTGAGA)
+ IF(ISUB.GE.131.AND.ISUB.LE.140) THEN
+ CKIN(3)=MAX(VINT(285),VINT(154))
+ CKIN(1)=2D0*CKIN(3)
+ ENDIF
+C...When necessary set direct/resolved photon by hand.
+ ELSEIF(MINT(15).EQ.22.OR.MINT(16).EQ.22) THEN
+ IF(MINT(15).EQ.22.AND.MINT(41).EQ.2) MINT(15)=0
+ IF(MINT(16).EQ.22.AND.MINT(42).EQ.2) MINT(16)=0
+ ENDIF
+
+C...Restrict direct*resolved processes to pTmin >= Q,
+C...to avoid doublecounting with DIS.
+ IF(MSTP(18).EQ.3.AND.ISUB.GE.131.AND.ISUB.LE.136) THEN
+ IF(MINT(15).EQ.22) THEN
+ CKIN(3)=MAX(VINT(285),VINT(154),ABS(VINT(3)))
+ ELSE
+ CKIN(3)=MAX(VINT(285),VINT(154),ABS(VINT(4)))
+ ENDIF
+ CKIN(1)=2D0*CKIN(3)
+ ENDIF
+
+C...Set up for multiple interactions (may include impact parameter).
+ IF(INMULT.EQ.1) THEN
+ IF(MINT(35).LE.1) CALL PYMULT(2)
+ IF(MINT(35).GE.2) CALL PYMIGN(2)
+ ENDIF
+
+C...Loopback point for minimum bias in photon physics.
+ LOOP2=0
+ 140 LOOP2=LOOP2+1
+ IF(MINT(82).EQ.1) NGEN(0,1)=NGEN(0,1)+MINT(143)
+ IF(MINT(82).EQ.1) NGEN(ISUB,1)=NGEN(ISUB,1)+MINT(143)
+ IF(ISUB.EQ.96.AND.LOOP2.EQ.1.AND.MINT(82).EQ.1)
+ &NGEN(97,1)=NGEN(97,1)+MINT(143)
+ MINT(1)=ISUB
+ ISTSB=ISET(ISUB)
+
+C...Random choice of flavour for some SUSY processes.
+ IF(ISUB.GE.201.AND.ISUB.LE.301) THEN
+C...~e_L ~nu_e or ~mu_L ~nu_mu.
+ IF(ISUB.EQ.210) THEN
+ KFPR(ISUB,1)=KSUSY1+11+2*INT(0.5D0+PYR(0))
+ KFPR(ISUB,2)=KFPR(ISUB,1)+1
+C...~nu_e ~nu_e(bar) or ~nu_mu ~nu_mu(bar).
+ ELSEIF(ISUB.EQ.213) THEN
+ KFPR(ISUB,1)=KSUSY1+12+2*INT(0.5D0+PYR(0))
+ KFPR(ISUB,2)=KFPR(ISUB,1)
+C...~q ~chi/~g; ~q = ~d, ~u, ~s, ~c or ~b.
+ ELSEIF(ISUB.GE.246.AND.ISUB.LE.259.AND.ISUB.NE.255.AND.
+ & ISUB.NE.257) THEN
+ IF(ISUB.GE.258) THEN
+ RKF=4D0
+ ELSE
+ RKF=5D0
+ ENDIF
+ IF(MOD(ISUB,2).EQ.0) THEN
+ KFPR(ISUB,1)=KSUSY1+1+INT(RKF*PYR(0))
+ ELSE
+ KFPR(ISUB,1)=KSUSY2+1+INT(RKF*PYR(0))
+ ENDIF
+C...~q1 ~q2; ~q = ~d, ~u, ~s, or ~c.
+ ELSEIF(ISUB.GE.271.AND.ISUB.LE.276) THEN
+ IF(ISUB.EQ.271.OR.ISUB.EQ.274) THEN
+ KSU1=KSUSY1
+ KSU2=KSUSY1
+ ELSEIF(ISUB.EQ.272.OR.ISUB.EQ.275) THEN
+ KSU1=KSUSY2
+ KSU2=KSUSY2
+ ELSEIF(PYR(0).LT.0.5D0) THEN
+ KSU1=KSUSY1
+ KSU2=KSUSY2
+ ELSE
+ KSU1=KSUSY2
+ KSU2=KSUSY1
+ ENDIF
+ KFPR(ISUB,1)=KSU1+1+INT(4D0*PYR(0))
+ KFPR(ISUB,2)=KSU2+1+INT(4D0*PYR(0))
+C...~q ~q(bar); ~q = ~d, ~u, ~s, or ~c.
+ ELSEIF(ISUB.EQ.277.OR.ISUB.EQ.279) THEN
+ KFPR(ISUB,1)=KSUSY1+1+INT(4D0*PYR(0))
+ KFPR(ISUB,2)=KFPR(ISUB,1)
+ ELSEIF(ISUB.EQ.278.OR.ISUB.EQ.280) THEN
+ KFPR(ISUB,1)=KSUSY2+1+INT(4D0*PYR(0))
+ KFPR(ISUB,2)=KFPR(ISUB,1)
+C...~q1 ~q2; ~q = ~d, ~u, ~s, or ~c.
+ ELSEIF(ISUB.GE.281.AND.ISUB.LE.286) THEN
+ IF(ISUB.EQ.281.OR.ISUB.EQ.284) THEN
+ KSU1=KSUSY1
+ KSU2=KSUSY1
+ ELSEIF(ISUB.EQ.282.OR.ISUB.EQ.285) THEN
+ KSU1=KSUSY2
+ KSU2=KSUSY2
+ ELSEIF(PYR(0).LT.0.5D0) THEN
+ KSU1=KSUSY1
+ KSU2=KSUSY2
+ ELSE
+ KSU1=KSUSY2
+ KSU2=KSUSY1
+ ENDIF
+ IF(ISUB.EQ.281.OR.ISUB.LE.283) THEN
+ RKF=5D0
+ ELSE
+ RKF=4D0
+ ENDIF
+ KFPR(ISUB,2)=KSU2+1+INT(RKF*PYR(0))
+ ENDIF
+ ENDIF
+
+C...Find resonances (explicit or implicit in cross-section).
+ MINT(72)=0
+ KFR1=0
+ IF(ISTSB.EQ.1.OR.ISTSB.EQ.3.OR.ISTSB.EQ.5) THEN
+ KFR1=KFPR(ISUB,1)
+ ELSEIF(ISUB.EQ.24.OR.ISUB.EQ.25.OR.ISUB.EQ.110.OR.ISUB.EQ.165.OR.
+ & ISUB.EQ.171.OR.ISUB.EQ.176) THEN
+ KFR1=23
+ ELSEIF(ISUB.EQ.23.OR.ISUB.EQ.26.OR.ISUB.EQ.166.OR.ISUB.EQ.172.OR.
+ & ISUB.EQ.177) THEN
+ KFR1=24
+ ELSEIF(ISUB.GE.71.AND.ISUB.LE.77) THEN
+ KFR1=25
+ IF(MSTP(46).EQ.5) THEN
+ KFR1=89
+ PMAS(89,1)=PARP(45)
+ PMAS(89,2)=PARP(45)**3/(96D0*PARU(1)*PARP(47)**2)
+ ENDIF
+ ENDIF
+ CKMX=CKIN(2)
+ IF(CKMX.LE.0D0) CKMX=VINT(1)
+ KCR1=PYCOMP(KFR1)
+ IF(KFR1.NE.0) THEN
+ IF(CKIN(1).GT.PMAS(KCR1,1)+20D0*PMAS(KCR1,2).OR.
+ & CKMX.LT.PMAS(KCR1,1)-20D0*PMAS(KCR1,2)) KFR1=0
+ ENDIF
+ IF(KFR1.NE.0) THEN
+ TAUR1=PMAS(KCR1,1)**2/VINT(2)
+ GAMR1=PMAS(KCR1,1)*PMAS(KCR1,2)/VINT(2)
+ MINT(72)=1
+ MINT(73)=KFR1
+ VINT(73)=TAUR1
+ VINT(74)=GAMR1
+ ENDIF
+ KFR2=0
+ KFR3=0
+ IF(ISUB.EQ.141.OR.ISUB.EQ.194.OR.ISUB.EQ.195.OR.
+ $(ISUB.GE.361.AND.ISUB.LE.380))
+ $THEN
+ KFR2=23
+ IF(ISUB.EQ.141) THEN
+ KCR2=PYCOMP(KFR2)
+ IF(CKIN(1).GT.PMAS(KCR2,1)+20D0*PMAS(KCR2,2).OR.
+ & CKMX.LT.PMAS(KCR2,1)-20D0*PMAS(KCR2,2)) THEN
+ KFR2=0
+ ELSE
+ TAUR2=PMAS(KCR2,1)**2/VINT(2)
+ GAMR2=PMAS(KCR2,1)*PMAS(KCR2,2)/VINT(2)
+ MINT(72)=2
+ MINT(74)=KFR2
+ VINT(75)=TAUR2
+ VINT(76)=GAMR2
+ ENDIF
+C...3 resonances at work: rho, omega, a
+ ELSEIF(ISUB.EQ.194.OR.(ISUB.GE.361.AND.ISUB.LE.368)
+ & .OR.ISUB.EQ.379.OR.ISUB.EQ.380) THEN
+ MINT(72)=IRES
+ IF(IRES.GE.1) THEN
+ VINT(73)=XMAS(1)**2/VINT(2)
+ VINT(74)=XMAS(1)*XWID(1)/VINT(2)
+ TAUR1=VINT(73)
+ GAMR1=VINT(74)
+ KFR1=1
+ ENDIF
+ IF(IRES.GE.2) THEN
+ VINT(75)=XMAS(2)**2/VINT(2)
+ VINT(76)=XMAS(2)*XWID(2)/VINT(2)
+ TAUR2=VINT(75)
+ GAMR2=VINT(76)
+ KFR2=2
+ ENDIF
+ IF(IRES.EQ.3) THEN
+ VINT(77)=XMAS(3)**2/VINT(2)
+ VINT(78)=XMAS(3)*XWID(3)/VINT(2)
+ TAUR3=VINT(77)
+ GAMR3=VINT(78)
+ KFR3=3
+ ENDIF
+C...Charged current: rho+- and a+-
+ ELSEIF(ISUB.EQ.195.OR.ISUB.GE.370.AND.ISUB.LE.378) THEN
+ MINT(72)=IRES
+ IF(JRES.GE.1) THEN
+ VINT(73)=YMAS(1)**2/VINT(2)
+ VINT(74)=YMAS(1)*YWID(1)/VINT(2)
+ KFR1=1
+ TAUR1=VINT(73)
+ GAMR1=VINT(74)
+ ENDIF
+ IF(JRES.GE.2) THEN
+ VINT(75)=YMAS(2)**2/VINT(2)
+ VINT(76)=YMAS(2)*YWID(2)/VINT(2)
+ KFR2=2
+ TAUR2=VINT(73)
+ GAMR2=VINT(74)
+ ENDIF
+ KFR3=0
+ ENDIF
+ IF(ISUB.NE.141) THEN
+ IF(KFR3.NE.0.AND.KFR2.NE.0.AND.KFR1.NE.0) THEN
+
+ ELSEIF(KFR1.NE.0.AND.KFR2.NE.0) THEN
+ MINT(72)=2
+ ELSEIF(KFR1.NE.0.AND.KFR3.NE.0) THEN
+ MINT(72)=2
+ MINT(74)=KFR3
+ VINT(75)=TAUR3
+ VINT(76)=GAMR3
+ ELSEIF(KFR2.NE.0.AND.KFR3.NE.0) THEN
+ MINT(72)=2
+ MINT(73)=KFR2
+ VINT(73)=TAUR2
+ VINT(74)=GAMR2
+ MINT(74)=KFR3
+ VINT(75)=TAUR3
+ VINT(76)=GAMR3
+ ELSEIF(KFR1.NE.0) THEN
+ MINT(72)=1
+ ELSEIF(KFR2.NE.0) THEN
+ MINT(72)=1
+ MINT(73)=KFR2
+ VINT(73)=TAUR2
+ VINT(74)=GAMR2
+ ELSEIF(KFR3.NE.0) THEN
+ MINT(72)=1
+ MINT(73)=KFR3
+ VINT(73)=TAUR3
+ VINT(74)=GAMR3
+ ELSE
+ MINT(72)=0
+ ENDIF
+ ELSE
+ IF(KFR2.NE.0.AND.KFR1.NE.0) THEN
+
+ ELSEIF(KFR2.NE.0) THEN
+ KFR1=KFR2
+ TAUR1=TAUR2
+ GAMR1=GAMR2
+ MINT(72)=1
+ MINT(73)=KFR1
+ VINT(73)=TAUR1
+ VINT(74)=GAMR1
+ KFR2=0
+ ELSE
+ MINT(72)=0
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...Find product masses and minimum pT of process,
+C...optionally with broadening according to a truncated Breit-Wigner.
+ VINT(63)=0D0
+ VINT(64)=0D0
+ MINT(71)=0
+ VINT(71)=CKIN(3)
+ IF(MINT(82).GE.2) VINT(71)=0D0
+ VINT(80)=1D0
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
+ NBW=0
+ DO 160 I=1,2
+ PMMN(I)=0D0
+ IF(KFPR(ISUB,I).EQ.0) THEN
+ ELSEIF(MSTP(42).LE.0.OR.PMAS(PYCOMP(KFPR(ISUB,I)),2).LT.
+ & PARP(41)) THEN
+ VINT(62+I)=PMAS(PYCOMP(KFPR(ISUB,I)),1)**2
+ ELSE
+ NBW=NBW+1
+C...This prevents SUSY/t particles from becoming too light.
+ KFLW=KFPR(ISUB,I)
+ IF(KFLW/KSUSY1.EQ.1.OR.KFLW/KSUSY1.EQ.2) THEN
+ KCW=PYCOMP(KFLW)
+ PMMN(I)=PMAS(KCW,1)
+ DO 150 IDC=MDCY(KCW,2),MDCY(KCW,2)+MDCY(KCW,3)-1
+ IF(MDME(IDC,1).GT.0.AND.BRAT(IDC).GT.1E-4) THEN
+ PMSUM=PMAS(PYCOMP(KFDP(IDC,1)),1)+
+ & PMAS(PYCOMP(KFDP(IDC,2)),1)
+ IF(KFDP(IDC,3).NE.0) PMSUM=PMSUM+
+ & PMAS(PYCOMP(KFDP(IDC,3)),1)
+ PMMN(I)=MIN(PMMN(I),PMSUM)
+ ENDIF
+ 150 CONTINUE
+ ELSEIF(KFLW.EQ.6) THEN
+ PMMN(I)=PMAS(24,1)+PMAS(5,1)
+ ENDIF
+ ENDIF
+ 160 CONTINUE
+ IF(NBW.GE.1) THEN
+ CKIN41=CKIN(41)
+ CKIN43=CKIN(43)
+ CKIN(41)=MAX(PMMN(1),CKIN(41))
+ CKIN(43)=MAX(PMMN(2),CKIN(43))
+ CALL PYOFSH(4,0,KFPR(ISUB,1),KFPR(ISUB,2),0D0,PQM3,PQM4)
+ CKIN(41)=CKIN41
+ CKIN(43)=CKIN43
+ IF(MINT(51).EQ.1) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ VINT(63)=PQM3**2
+ VINT(64)=PQM4**2
+ ENDIF
+ IF(MIN(VINT(63),VINT(64)).LT.CKIN(6)**2) MINT(71)=1
+ IF(MINT(71).EQ.1) VINT(71)=MAX(CKIN(3),CKIN(5))
+ ENDIF
+
+C...Prepare for additional variable choices in 2 -> 3.
+ IF(ISTSB.EQ.5) THEN
+ VINT(201)=0D0
+ IF(KFPR(ISUB,2).GT.0) VINT(201)=PMAS(PYCOMP(KFPR(ISUB,2)),1)
+ VINT(206)=VINT(201)
+ IF(ISUB.EQ.401.OR.ISUB.EQ.402) VINT(206)=PMAS(5,1)
+ VINT(204)=PMAS(23,1)
+ IF(ISUB.EQ.124.OR.ISUB.EQ.174.OR.ISUB.EQ.179.OR.ISUB.EQ.351)
+ & VINT(204)=PMAS(24,1)
+ IF(ISUB.EQ.352) VINT(204)=PMAS(PYCOMP(9900024),1)
+ IF(ISUB.EQ.121.OR.ISUB.EQ.122.OR.ISUB.EQ.181.OR.ISUB.EQ.182.OR.
+ & ISUB.EQ.186.OR.ISUB.EQ.187.OR.ISUB.EQ.401.OR.ISUB.EQ.402)
+ & VINT(204)=VINT(201)
+ VINT(209)=VINT(204)
+ IF(ISUB.EQ.401.OR.ISUB.EQ.402) VINT(209)=VINT(206)
+ ENDIF
+
+C...Select incoming VDM particle (rho/omega/phi/J/psi).
+ IF(ISTSB.NE.0.AND.(MINT(101).GE.2.OR.MINT(102).GE.2).AND.
+ &(MINT(123).EQ.2.OR.MINT(123).EQ.3.OR.MINT(123).EQ.7)) THEN
+ VRN=PYR(0)*SIGT(0,0,5)
+ IF(MINT(101).LE.1) THEN
+ I1MN=0
+ I1MX=0
+ ELSE
+ I1MN=1
+ I1MX=MINT(101)
+ ENDIF
+ IF(MINT(102).LE.1) THEN
+ I2MN=0
+ I2MX=0
+ ELSE
+ I2MN=1
+ I2MX=MINT(102)
+ ENDIF
+ DO 180 I1=I1MN,I1MX
+ KFV1=110*I1+3
+ DO 170 I2=I2MN,I2MX
+ KFV2=110*I2+3
+ VRN=VRN-SIGT(I1,I2,5)
+ IF(VRN.LE.0D0) GOTO 190
+ 170 CONTINUE
+ 180 CONTINUE
+ 190 IF(MINT(101).GE.2) MINT(103)=KFV1
+ IF(MINT(102).GE.2) MINT(104)=KFV2
+ ENDIF
+
+ IF(ISTSB.EQ.0) THEN
+C...Elastic scattering or single or double diffractive scattering.
+
+C...Select incoming particle (rho/omega/phi/J/psi for VDM) and mass.
+ MINT(103)=MINT(11)
+ MINT(104)=MINT(12)
+ PMM(1)=VINT(3)
+ PMM(2)=VINT(4)
+ IF(MINT(101).GE.2.OR.MINT(102).GE.2) THEN
+ JJ=ISUB-90
+ VRN=PYR(0)*SIGT(0,0,JJ)
+ IF(MINT(101).LE.1) THEN
+ I1MN=0
+ I1MX=0
+ ELSE
+ I1MN=1
+ I1MX=MINT(101)
+ ENDIF
+ IF(MINT(102).LE.1) THEN
+ I2MN=0
+ I2MX=0
+ ELSE
+ I2MN=1
+ I2MX=MINT(102)
+ ENDIF
+ DO 210 I1=I1MN,I1MX
+ KFV1=110*I1+3
+ DO 200 I2=I2MN,I2MX
+ KFV2=110*I2+3
+ VRN=VRN-SIGT(I1,I2,JJ)
+ IF(VRN.LE.0D0) GOTO 220
+ 200 CONTINUE
+ 210 CONTINUE
+ 220 IF(MINT(101).GE.2) THEN
+ MINT(103)=KFV1
+ PMM(1)=PYMASS(KFV1)
+ ENDIF
+ IF(MINT(102).GE.2) THEN
+ MINT(104)=KFV2
+ PMM(2)=PYMASS(KFV2)
+ ENDIF
+ ENDIF
+ VINT(67)=PMM(1)
+ VINT(68)=PMM(2)
+
+C...Select mass for GVMD states (rejecting previous assignment).
+ Q0S=4D0*PARP(15)**2
+ Q1S=4D0*VINT(154)**2
+ LOOP3=0
+ 230 LOOP3=LOOP3+1
+ DO 240 JT=1,2
+ IF(MINT(106+JT).EQ.3) THEN
+ PS=VINT(2+JT)**2
+ PMM(JT)=(Q0S+PS)*(Q1S+PS)/
+ & (Q0S+PYR(0)*(Q1S-Q0S)+PS)-PS
+ IF(MINT(102+JT).GE.333) PMM(JT)=PMM(JT)-
+ & PMAS(PYCOMP(113),1)+PMAS(PYCOMP(MINT(102+JT)),1)
+ ENDIF
+ 240 CONTINUE
+ IF(PMM(1)+PMM(2)+PARP(104).GE.VINT(1)) THEN
+ IF(LOOP3.LT.100.AND.(MINT(107).EQ.3.OR.MINT(108).EQ.3))
+ & GOTO 230
+ GOTO 100
+ ENDIF
+
+C...Side/sides of diffractive system.
+ MINT(17)=0
+ MINT(18)=0
+ IF(ISUB.EQ.92.OR.ISUB.EQ.94) MINT(17)=1
+ IF(ISUB.EQ.93.OR.ISUB.EQ.94) MINT(18)=1
+
+C...Find masses of particles and minimal masses of diffractive states.
+ DO 250 JT=1,2
+ PDIF(JT)=PMM(JT)
+ VINT(68+JT)=PDIF(JT)
+ IF(MINT(16+JT).EQ.1) PDIF(JT)=PDIF(JT)+PARP(102)
+ 250 CONTINUE
+ SH=VINT(2)
+ SQM1=PMM(1)**2
+ SQM2=PMM(2)**2
+ SQM3=PDIF(1)**2
+ SQM4=PDIF(2)**2
+ SMRES1=(PMM(1)+PMRC)**2
+ SMRES2=(PMM(2)+PMRC)**2
+
+C...Find elastic slope and lower limit diffractive slope.
+ IHA=MAX(2,IABS(MINT(103))/110)
+ IF(IHA.GE.5) IHA=1
+ IHB=MAX(2,IABS(MINT(104))/110)
+ IF(IHB.GE.5) IHB=1
+ IF(ISUB.EQ.91) THEN
+ BMN=2D0*BHAD(IHA)+2D0*BHAD(IHB)+4D0*SH**EPS-4.2D0
+ ELSEIF(ISUB.EQ.92) THEN
+ BMN=MAX(2D0,2D0*BHAD(IHB))
+ ELSEIF(ISUB.EQ.93) THEN
+ BMN=MAX(2D0,2D0*BHAD(IHA))
+ ELSEIF(ISUB.EQ.94) THEN
+ BMN=2D0*ALP*4D0
+ ENDIF
+
+C...Determine maximum possible t range and coefficient of generation.
+ SQLA12=(SH-SQM1-SQM2)**2-4D0*SQM1*SQM2
+ SQLA34=(SH-SQM3-SQM4)**2-4D0*SQM3*SQM4
+ THA=SH-(SQM1+SQM2+SQM3+SQM4)+(SQM1-SQM2)*(SQM3-SQM4)/SH
+ THB=SQRT(MAX(0D0,SQLA12))*SQRT(MAX(0D0,SQLA34))/SH
+ THC=(SQM3-SQM1)*(SQM4-SQM2)+(SQM1+SQM4-SQM2-SQM3)*
+ & (SQM1*SQM4-SQM2*SQM3)/SH
+ THL=-0.5D0*(THA+THB)
+ THU=THC/THL
+ THRND=EXP(MAX(-50D0,BMN*(THL-THU)))-1D0
+
+C...Select diffractive mass/masses according to dm^2/m^2.
+ LOOP3=0
+ 260 LOOP3=LOOP3+1
+ DO 270 JT=1,2
+ IF(MINT(16+JT).EQ.0) THEN
+ PDIF(2+JT)=PDIF(JT)
+ ELSE
+ PMMIN=PDIF(JT)
+ PMMAX=MAX(VINT(2+JT),VINT(1)-PDIF(3-JT))
+ PDIF(2+JT)=PMMIN*(PMMAX/PMMIN)**PYR(0)
+ ENDIF
+ 270 CONTINUE
+ SQM3=PDIF(3)**2
+ SQM4=PDIF(4)**2
+
+C..Additional mass factors, including resonance enhancement.
+ IF(PDIF(3)+PDIF(4).GE.VINT(1)) THEN
+ IF(LOOP3.LT.100) GOTO 260
+ GOTO 100
+ ENDIF
+ IF(ISUB.EQ.92) THEN
+ FSD=(1D0-SQM3/SH)*(1D0+CRES*SMRES1/(SMRES1+SQM3))
+ IF(FSD.LT.PYR(0)*(1D0+CRES)) GOTO 260
+ ELSEIF(ISUB.EQ.93) THEN
+ FSD=(1D0-SQM4/SH)*(1D0+CRES*SMRES2/(SMRES2+SQM4))
+ IF(FSD.LT.PYR(0)*(1D0+CRES)) GOTO 260
+ ELSEIF(ISUB.EQ.94) THEN
+ FDD=(1D0-(PDIF(3)+PDIF(4))**2/SH)*(SH*SMP/
+ & (SH*SMP+SQM3*SQM4))*(1D0+CRES*SMRES1/(SMRES1+SQM3))*
+ & (1D0+CRES*SMRES2/(SMRES2+SQM4))
+ IF(FDD.LT.PYR(0)*(1D0+CRES)**2) GOTO 260
+ ENDIF
+
+C...Select t according to exp(Bmn*t) and correct to right slope.
+ TH=THU+LOG(1D0+THRND*PYR(0))/BMN
+ IF(ISUB.GE.92) THEN
+ IF(ISUB.EQ.92) THEN
+ BADD=2D0*ALP*LOG(SH/SQM3)
+ IF(BHAD(IHB).LT.1D0) BADD=MAX(0D0,BADD+2D0*BHAD(IHB)-2D0)
+ ELSEIF(ISUB.EQ.93) THEN
+ BADD=2D0*ALP*LOG(SH/SQM4)
+ IF(BHAD(IHA).LT.1D0) BADD=MAX(0D0,BADD+2D0*BHAD(IHA)-2D0)
+ ELSEIF(ISUB.EQ.94) THEN
+ BADD=2D0*ALP*(LOG(EXP(4D0)+SH/(ALP*SQM3*SQM4))-4D0)
+ ENDIF
+ IF(EXP(MAX(-50D0,BADD*(TH-THU))).LT.PYR(0)) GOTO 260
+ ENDIF
+
+C...Check whether m^2 and t choices are consistent.
+ SQLA34=(SH-SQM3-SQM4)**2-4D0*SQM3*SQM4
+ THA=SH-(SQM1+SQM2+SQM3+SQM4)+(SQM1-SQM2)*(SQM3-SQM4)/SH
+ THB=SQRT(MAX(0D0,SQLA12))*SQRT(MAX(0D0,SQLA34))/SH
+ IF(THB.LE.1D-8) GOTO 260
+ THC=(SQM3-SQM1)*(SQM4-SQM2)+(SQM1+SQM4-SQM2-SQM3)*
+ & (SQM1*SQM4-SQM2*SQM3)/SH
+ THLM=-0.5D0*(THA+THB)
+ THUM=THC/THLM
+ IF(TH.LT.THLM.OR.TH.GT.THUM) GOTO 260
+
+C...Information to output.
+ VINT(21)=1D0
+ VINT(22)=0D0
+ VINT(23)=MIN(1D0,MAX(-1D0,(THA+2D0*TH)/THB))
+ VINT(45)=TH
+ VINT(59)=2D0*SQRT(MAX(0D0,-(THC+THA*TH+TH**2)))/THB
+ VINT(63)=PDIF(3)**2
+ VINT(64)=PDIF(4)**2
+ VINT(283)=PMM(1)**2/4D0
+ VINT(284)=PMM(2)**2/4D0
+
+C...Note: in the following, by In is meant the integral over the
+C...quantity multiplying coefficient cn.
+C...Choose tau according to h1(tau)/tau, where
+C...h1(tau) = c1 + I1/I2*c2*1/tau + I1/I3*c3*1/(tau+tau_R) +
+C...I1/I4*c4*tau/((s*tau-m^2)^2+(m*Gamma)^2) +
+C...I1/I5*c5*1/(tau+tau_R') +
+C...I1/I6*c6*tau/((s*tau-m'^2)^2+(m'*Gamma')^2) +
+C...I1/I7*c7*tau/(1.-tau), and
+C...c1 + c2 + c3 + c4 + c5 + c6 + c7 = 1.
+ ELSEIF(ISTSB.GE.1.AND.ISTSB.LE.5) THEN
+ CALL PYKLIM(1)
+ IF(MINT(51).NE.0) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ RTAU=PYR(0)
+ MTAU=1
+ IF(RTAU.GT.COEF(ISUB,1)) MTAU=2
+ IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)) MTAU=3
+ IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)+COEF(ISUB,3)) MTAU=4
+ IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)+COEF(ISUB,3)+COEF(ISUB,4))
+ & MTAU=5
+ IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)+COEF(ISUB,3)+COEF(ISUB,4)+
+ & COEF(ISUB,5)) MTAU=6
+ IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)+COEF(ISUB,3)+COEF(ISUB,4)+
+ & COEF(ISUB,5)+COEF(ISUB,6)) MTAU=7
+C...Additional check to handle techni-processes with extra resonance
+C....Only modify tau treatment
+ IF(ISUB.EQ.194.OR.ISUB.EQ.195.OR.(ISUB.GE.361.AND.ISUB.LE.380))
+ & THEN
+ IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)+COEF(ISUB,3)
+ & +COEF(ISUB,4)+COEF(ISUB,5)+COEF(ISUB,6)+COEF(ISUB,7)) MTAU=8
+ IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)+COEF(ISUB,3)
+ & +COEF(ISUB,4)+COEF(ISUB,5)+COEF(ISUB,6)+COEF(ISUB,7)
+ & +COEFX(ISUB,1)) MTAU=9
+ ENDIF
+ CALL PYKMAP(1,MTAU,PYR(0))
+
+C...2 -> 3, 4 processes:
+C...Choose tau' according to h4(tau,tau')/tau', where
+C...h4(tau,tau') = c1 + I1/I2*c2*(1 - tau/tau')^3/tau' +
+C...I1/I3*c3*1/(1 - tau'), and c1 + c2 + c3 = 1.
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) THEN
+ CALL PYKLIM(4)
+ IF(MINT(51).NE.0) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ RTAUP=PYR(0)
+ MTAUP=1
+ IF(RTAUP.GT.COEF(ISUB,18)) MTAUP=2
+ IF(RTAUP.GT.COEF(ISUB,18)+COEF(ISUB,19)) MTAUP=3
+ CALL PYKMAP(4,MTAUP,PYR(0))
+ ENDIF
+
+C...Choose y* according to h2(y*), where
+C...h2(y*) = I0/I1*c1*(y*-y*min) + I0/I2*c2*(y*max-y*) +
+C...I0/I3*c3*1/cosh(y*) + I0/I4*c4*1/(1-exp(y*-y*max)) +
+C...I0/I5*c5*1/(1-exp(-y*-y*min)), I0 = y*max-y*min,
+C...and c1 + c2 + c3 + c4 + c5 = 1.
+ CALL PYKLIM(2)
+ IF(MINT(51).NE.0) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)+COEF(ISUB,10)) MYST=4
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)+COEF(ISUB,10)+
+ & COEF(ISUB,11)) MYST=5
+ CALL PYKMAP(2,MYST,PYR(0))
+
+C...2 -> 2 processes:
+C...Choose cos(theta-hat) (cth) according to h3(cth), where
+C...h3(cth) = c0 + I0/I1*c1*1/(A - cth) + I0/I2*c2*1/(A + cth) +
+C...I0/I3*c3*1/(A - cth)^2 + I0/I4*c4*1/(A + cth)^2,
+C...A = 1 + 2*(m3*m4/sh)^2 (= 1 for massless products),
+C...and c0 + c1 + c2 + c3 + c4 = 1.
+ CALL PYKLIM(3)
+ IF(MINT(51).NE.0) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
+ RCTH=PYR(0)
+ MCTH=1
+ IF(RCTH.GT.COEF(ISUB,13)) MCTH=2
+ IF(RCTH.GT.COEF(ISUB,13)+COEF(ISUB,14)) MCTH=3
+ IF(RCTH.GT.COEF(ISUB,13)+COEF(ISUB,14)+COEF(ISUB,15)) MCTH=4
+ IF(RCTH.GT.COEF(ISUB,13)+COEF(ISUB,14)+COEF(ISUB,15)+
+ & COEF(ISUB,16)) MCTH=5
+ CALL PYKMAP(3,MCTH,PYR(0))
+ ENDIF
+
+C...2 -> 3 : select pT1, phi1, pT2, phi2, y3 for 3 outgoing.
+ IF(ISTSB.EQ.5) THEN
+ CALL PYKMAP(5,0,0D0)
+ IF(MINT(51).NE.0) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ ENDIF
+
+C...DIS as f + gamma* -> f process: set dummy values.
+ ELSEIF(ISTSB.EQ.8) THEN
+ VINT(21)=0.9D0
+ VINT(22)=0D0
+ VINT(23)=0D0
+ VINT(47)=0D0
+ VINT(48)=0D0
+
+C...Low-pT or multiple interactions (first semihard interaction).
+ ELSEIF(ISTSB.EQ.9) THEN
+ IF(MINT(35).LE.1) CALL PYMULT(3)
+ IF(MINT(35).GE.2) CALL PYMIGN(3)
+ ISUB=MINT(1)
+
+C...Study user-defined process: kinematics plus weight.
+ ELSEIF(ISTSB.EQ.11) THEN
+ IF(IDWTUP.GT.0.AND.XWGTUP.LT.0D0) CALL
+ & PYERRM(26,'(PYRAND:) Negative XWGTUP for user process')
+ MSTI(51)=0
+ IF(NUP.LE.0) THEN
+ MINT(51)=2
+ MSTI(51)=1
+ IF(MINT(82).EQ.1) THEN
+ NGEN(0,1)=NGEN(0,1)-1
+ NGEN(ISUB,1)=NGEN(ISUB,1)-1
+ ENDIF
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ RETURN
+ ENDIF
+
+C...Extract cross section event weight.
+ IF(IABS(IDWTUP).EQ.1.OR.IABS(IDWTUP).EQ.4) THEN
+ SIGS=1D-9*XWGTUP
+ ELSE
+ SIGS=1D-9*XSECUP(KFPR(ISUB,1))
+ ENDIF
+ IF(IABS(IDWTUP).GE.1.AND.IABS(IDWTUP).LE.3) THEN
+ VINT(97)=SIGN(1D0,XWGTUP)
+ ELSE
+ VINT(97)=1D-9*XWGTUP
+ ENDIF
+
+C...Construct 'trivial' kinematical variables needed.
+ KFL1=IDUP(1)
+ KFL2=IDUP(2)
+ VINT(41)=PUP(4,1)/EBMUP(1)
+ VINT(42)=PUP(4,2)/EBMUP(2)
+ IF (VINT(41).GT.1.000001.OR.VINT(42).GT.1.000001) THEN
+ CALL PYERRM(9,'(PYRAND:) x > 1 in external event '//
+ & '(listing follows):')
+ CALL PYLIST(7)
+ ENDIF
+ VINT(21)=VINT(41)*VINT(42)
+ VINT(22)=0.5D0*LOG(VINT(41)/VINT(42))
+ VINT(44)=VINT(21)*VINT(2)
+ VINT(43)=SQRT(MAX(0D0,VINT(44)))
+ VINT(55)=SCALUP
+ IF(SCALUP.LE.0D0) VINT(55)=VINT(43)
+ VINT(56)=VINT(55)**2
+ VINT(57)=AQEDUP
+ VINT(58)=AQCDUP
+
+C...Construct other kinematical variables needed (approximately).
+ VINT(23)=0D0
+ VINT(26)=VINT(21)
+ VINT(45)=-0.5D0*VINT(44)
+ VINT(46)=-0.5D0*VINT(44)
+ VINT(49)=VINT(43)
+ VINT(50)=VINT(44)
+ VINT(51)=VINT(55)
+ VINT(52)=VINT(56)
+ VINT(53)=VINT(55)
+ VINT(54)=VINT(56)
+ VINT(25)=0D0
+ VINT(48)=0D0
+ IF(ISTUP(1).NE.-1.OR.ISTUP(2).NE.-1) CALL PYERRM(26,
+ & '(PYRAND:) unacceptable ISTUP code for incoming particles')
+ DO 280 IUP=3,NUP
+ IF(ISTUP(IUP).LT.1.OR.ISTUP(IUP).GT.3) CALL PYERRM(26,
+ & '(PYRAND:) unacceptable ISTUP code for particles')
+ IF(ISTUP(IUP).EQ.1) VINT(25)=VINT(25)+2D0*(PUP(5,IUP)**2+
+ & PUP(1,IUP)**2+PUP(2,IUP)**2)/VINT(2)
+ IF(ISTUP(IUP).EQ.1) VINT(48)=VINT(48)+0.5D0*(PUP(1,IUP)**2+
+ & PUP(2,IUP)**2)
+ 280 CONTINUE
+ VINT(47)=SQRT(VINT(48))
+ ENDIF
+
+C...Choose azimuthal angle.
+ VINT(24)=0D0
+ IF(ISTSB.NE.11) VINT(24)=PARU(2)*PYR(0)
+
+C...Check against user cuts on kinematics at parton level.
+ MINT(51)=0
+ IF((ISUB.LE.90.OR.ISUB.GT.100).AND.ISTSB.LE.10) CALL PYKLIM(0)
+ IF(MINT(51).NE.0) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ IF(MINT(82).EQ.1.AND.MSTP(141).GE.1.AND.ISTSB.LE.10) THEN
+ MCUT=0
+ IF(MSUB(91)+MSUB(92)+MSUB(93)+MSUB(94)+MSUB(95).EQ.0)
+ & CALL PYKCUT(MCUT)
+ IF(MCUT.NE.0) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ ENDIF
+
+C...Calculate differential cross-section for different subprocesses.
+ IF(ISTSB.LE.10) CALL PYSIGH(NCHN,SIGS)
+ SIGSOR=SIGS
+ SIGLPT=SIGT(0,0,5)*VINT(315)*VINT(316)
+
+C...Multiply cross section by lepton -> photon flux factor.
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) THEN
+ SIGS=WTGAGA*SIGS
+ DO 290 ICHN=1,NCHN
+ SIGH(ICHN)=WTGAGA*SIGH(ICHN)
+ 290 CONTINUE
+ SIGLPT=WTGAGA*SIGLPT
+ ENDIF
+
+C...Multiply cross-section by user-defined weights.
+ IF(MSTP(173).EQ.1) THEN
+ SIGS=PARP(173)*SIGS
+ DO 300 ICHN=1,NCHN
+ SIGH(ICHN)=PARP(173)*SIGH(ICHN)
+ 300 CONTINUE
+ SIGLPT=PARP(173)*SIGLPT
+ ENDIF
+ WTXS=1D0
+ SIGSWT=SIGS
+ VINT(99)=1D0
+ VINT(100)=1D0
+ IF(MINT(82).EQ.1.AND.MSTP(142).GE.1) THEN
+ IF(ISUB.NE.96.AND.MSUB(91)+MSUB(92)+MSUB(93)+MSUB(94)+
+ & MSUB(95).EQ.0) CALL PYEVWT(WTXS)
+ SIGSWT=WTXS*SIGS
+ VINT(99)=WTXS
+ IF(MSTP(142).EQ.1) VINT(100)=1D0/WTXS
+ ENDIF
+
+C...Calculations for Monte Carlo estimate of all cross-sections.
+ IF(MINT(82).EQ.1.AND.ISUB.LE.90.OR.ISUB.GE.96) THEN
+ IF(MSTP(142).LE.1) THEN
+ XSEC(ISUB,2)=XSEC(ISUB,2)+SIGS
+ ELSE
+ XSEC(ISUB,2)=XSEC(ISUB,2)+SIGSWT
+ ENDIF
+ ELSEIF(MINT(82).EQ.1) THEN
+ XSEC(ISUB,2)=XSEC(ISUB,2)+SIGS
+ ENDIF
+ IF((ISUB.EQ.95.OR.ISUB.EQ.96).AND.LOOP2.EQ.1.AND.
+ &MINT(82).EQ.1) XSEC(97,2)=XSEC(97,2)+SIGLPT
+
+C...Multiple interactions: store results of cross-section calculation.
+ IF(MINT(50).EQ.1.AND.MSTP(82).GE.3) THEN
+ VINT(153)=SIGSOR
+ IF(MINT(35).LE.1) CALL PYMULT(4)
+ IF(MINT(35).GE.2) CALL PYMIGN(4)
+ ENDIF
+
+C...Ratio of actual to maximum cross section.
+ IF(ISTSB.NE.11) THEN
+ VIOL=SIGSWT/XSEC(ISUB,1)
+ IF(ISUB.EQ.96.AND.MSTP(173).EQ.1) VIOL=VIOL/PARP(174)
+ ELSEIF(IDWTUP.EQ.1.OR.IDWTUP.EQ.2) THEN
+ VIOL=XWGTUP/XMAXUP(KFPR(ISUB,1))
+ ELSEIF(IDWTUP.EQ.-1.OR.IDWTUP.EQ.-2) THEN
+ VIOL=ABS(XWGTUP)/ABS(XMAXUP(KFPR(ISUB,1)))
+ ELSE
+ VIOL=1D0
+ ENDIF
+
+C...Check that weight not negative.
+ IF(MSTP(123).LE.0) THEN
+ IF(VIOL.LT.-1D-3) THEN
+ WRITE(MSTU(11),5000) VIOL,NGEN(0,3)+1
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5100) ISUB,VINT(21),
+ & VINT(22),VINT(23),VINT(26)
+ CALL PYSTOP(2)
+ ENDIF
+ ELSE
+ IF(VIOL.LT.MIN(-1D-3,VINT(109))) THEN
+ VINT(109)=VIOL
+ IF(MSTP(123).LE.2) WRITE(MSTU(11),5200) VIOL,NGEN(0,3)+1
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5100) ISUB,VINT(21),
+ & VINT(22),VINT(23),VINT(26)
+ ENDIF
+ ENDIF
+
+C...Weighting using estimate of maximum of differential cross-section.
+ RATND=1D0
+ IF(MFAIL.EQ.0.AND.ISUB.NE.95.AND.ISUB.NE.96) THEN
+ IF(VIOL.LT.PYR(0)) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(ISUB.GE.91.AND.ISUB.LE.94) ISUB=0
+ GOTO 100
+ ENDIF
+ ELSEIF(MFAIL.EQ.0) THEN
+ RATND=SIGLPT/XSEC(95,1)
+ VIOL=VIOL/RATND
+ IF(LOOP2.EQ.1.AND.RATND.LT.PYR(0)) THEN
+ IF(VIOL.GT.PYR(0).AND.MINT(82).EQ.1.AND.MSUB(95).EQ.1.AND.
+ & (ISUB.LE.90.OR.ISUB.GE.95)) NGEN(95,1)=NGEN(95,1)+MINT(143)
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ ISUB=0
+ GOTO 100
+ ENDIF
+ IF(VIOL.LT.PYR(0)) THEN
+ GOTO 140
+ ENDIF
+ ELSEIF(ISUB.NE.95.AND.ISUB.NE.96) THEN
+ IF(VIOL.LT.PYR(0)) THEN
+ MSTI(61)=1
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ RETURN
+ ENDIF
+ ELSE
+ RATND=SIGLPT/XSEC(95,1)
+ IF(LOOP.EQ.1.AND.RATND.LT.PYR(0)) THEN
+ MSTI(61)=1
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ RETURN
+ ENDIF
+ VIOL=VIOL/RATND
+ IF(VIOL.LT.PYR(0)) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ GOTO 100
+ ENDIF
+ ENDIF
+
+C...Check for possible violation of estimated maximum of differential
+C...cross-section used in weighting.
+ IF(MSTP(123).LE.0) THEN
+ IF(VIOL.GT.1D0) THEN
+ WRITE(MSTU(11),5300) VIOL,NGEN(0,3)+1
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5100) ISUB,VINT(21),
+ & VINT(22),VINT(23),VINT(26)
+ CALL PYSTOP(2)
+ ENDIF
+ ELSEIF(MSTP(123).EQ.1) THEN
+ IF(VIOL.GT.VINT(108)) THEN
+ VINT(108)=VIOL
+ IF(VIOL.GT.1.0001D0) THEN
+ MINT(10)=1
+ WRITE(MSTU(11),5400) VIOL,NGEN(0,3)+1
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5100) ISUB,VINT(21),
+ & VINT(22),VINT(23),VINT(26)
+ ENDIF
+ ENDIF
+ ELSEIF(VIOL.GT.VINT(108)) THEN
+ VINT(108)=VIOL
+ IF(VIOL.GT.1D0) THEN
+ MINT(10)=1
+ IF(MSTP(123).EQ.2) WRITE(MSTU(11),5400) VIOL,NGEN(0,3)+1
+ IF(ISTSB.EQ.11.AND.(IABS(IDWTUP).EQ.1.OR.IABS(IDWTUP).EQ.2))
+ & THEN
+ XMAXUP(KFPR(ISUB,1))=VIOL*XMAXUP(KFPR(ISUB,1))
+ IF(KFPR(ISUB,1).LE.9) THEN
+ IF(MSTP(123).EQ.2) WRITE(MSTU(11),5800) KFPR(ISUB,1),
+ & XMAXUP(KFPR(ISUB,1))
+ ELSEIF(KFPR(ISUB,1).LE.99) THEN
+ IF(MSTP(123).EQ.2) WRITE(MSTU(11),5900) KFPR(ISUB,1),
+ & XMAXUP(KFPR(ISUB,1))
+ ELSE
+ IF(MSTP(123).EQ.2) WRITE(MSTU(11),6000) KFPR(ISUB,1),
+ & XMAXUP(KFPR(ISUB,1))
+ ENDIF
+ ENDIF
+ IF(ISTSB.NE.11.OR.IABS(IDWTUP).EQ.1) THEN
+ XDIF=XSEC(ISUB,1)*(VIOL-1D0)
+ XSEC(ISUB,1)=XSEC(ISUB,1)+XDIF
+ IF(MSUB(ISUB).EQ.1.AND.(ISUB.LE.90.OR.ISUB.GT.96))
+ & XSEC(0,1)=XSEC(0,1)+XDIF
+ IF(MSTP(122).GE.2) WRITE(MSTU(11),5100) ISUB,VINT(21),
+ & VINT(22),VINT(23),VINT(26)
+ IF(ISUB.LE.9) THEN
+ IF(MSTP(123).EQ.2) WRITE(MSTU(11),5500) ISUB,XSEC(ISUB,1)
+ ELSEIF(ISUB.LE.99) THEN
+ IF(MSTP(123).EQ.2) WRITE(MSTU(11),5600) ISUB,XSEC(ISUB,1)
+ ELSE
+ IF(MSTP(123).EQ.2) WRITE(MSTU(11),5700) ISUB,XSEC(ISUB,1)
+ ENDIF
+ ENDIF
+ VINT(108)=1D0
+ ENDIF
+ ENDIF
+
+C...Multiple interactions: choose impact parameter (if not already done).
+ IF(MINT(39).EQ.0) VINT(148)=1D0
+ IF(MINT(50).EQ.1.AND.(ISUB.LE.90.OR.ISUB.GE.96).AND.
+ &MSTP(82).GE.3) THEN
+ IF(MINT(35).LE.1) CALL PYMULT(5)
+ IF(MINT(35).GE.2) CALL PYMIGN(5)
+ IF(VINT(150).LT.PYR(0)) THEN
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+ IF(MFAIL.EQ.1) THEN
+ MSTI(61)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ ENDIF
+ IF(MINT(82).EQ.1) NGEN(0,2)=NGEN(0,2)+1
+ IF(MINT(82).EQ.1.AND.MSUB(95).EQ.1) THEN
+ IF(ISUB.LE.90.OR.ISUB.GE.95) NGEN(95,1)=NGEN(95,1)+MINT(143)
+ IF(ISUB.LE.90.OR.ISUB.GE.96) NGEN(96,2)=NGEN(96,2)+1
+ ENDIF
+ IF(ISUB.LE.90.OR.ISUB.GE.96) MINT(31)=MINT(31)+1
+
+C...Choose flavour of reacting partons (and subprocess).
+ IF(ISTSB.GE.11) GOTO 320
+ RSIGS=SIGS*PYR(0)
+ QT2=VINT(48)
+ RQQBAR=PARP(87)*(1D0-(QT2/(QT2+(PARP(88)*PARP(82)*
+ &(VINT(1)/PARP(89))**PARP(90))**2))**2)
+ IF(ISUB.NE.95.AND.(ISUB.NE.96.OR.MSTP(82).LE.1.OR.
+ &PYR(0).GT.RQQBAR)) THEN
+ DO 310 ICHN=1,NCHN
+ KFL1=ISIG(ICHN,1)
+ KFL2=ISIG(ICHN,2)
+ MINT(2)=ISIG(ICHN,3)
+ RSIGS=RSIGS-SIGH(ICHN)
+ IF(RSIGS.LE.0D0) GOTO 320
+ 310 CONTINUE
+
+C...Multiple interactions: choose qqbar preferentially at small pT.
+ ELSEIF(ISUB.EQ.96) THEN
+ MINT(105)=MINT(103)
+ MINT(109)=MINT(107)
+ CALL PYSPLI(MINT(11),21,KFL1,KFLDUM)
+ MINT(105)=MINT(104)
+ MINT(109)=MINT(108)
+ CALL PYSPLI(MINT(12),21,KFL2,KFLDUM)
+ MINT(1)=11
+ MINT(2)=1
+ IF(KFL1.EQ.KFL2.AND.PYR(0).LT.0.5D0) MINT(2)=2
+
+C...Low-pT: choose string drawing configuration.
+ ELSE
+ KFL1=21
+ KFL2=21
+ RSIGS=6D0*PYR(0)
+ MINT(2)=1
+ IF(RSIGS.GT.1D0) MINT(2)=2
+ IF(RSIGS.GT.2D0) MINT(2)=3
+ ENDIF
+
+C...Reassign QCD process. Partons before initial state radiation.
+ 320 IF(MINT(2).GT.10) THEN
+ MINT(1)=MINT(2)/10
+ MINT(2)=MOD(MINT(2),10)
+ ENDIF
+ IF(MINT(82).EQ.1.AND.MSTP(111).GE.0) NGEN(MINT(1),2)=
+ &NGEN(MINT(1),2)+1
+ MINT(15)=KFL1
+ MINT(16)=KFL2
+ MINT(13)=MINT(15)
+ MINT(14)=MINT(16)
+ VINT(141)=VINT(41)
+ VINT(142)=VINT(42)
+ VINT(151)=0D0
+ VINT(152)=0D0
+
+C...Calculate x value of photon for parton inside photon inside e.
+ DO 350 JT=1,2
+ MINT(18+JT)=0
+ VINT(154+JT)=0D0
+ MSPLI=0
+ IF(JT.EQ.1.AND.MINT(43).LE.2) MSPLI=1
+ IF(JT.EQ.2.AND.MOD(MINT(43),2).EQ.1) MSPLI=1
+ IF(IABS(MINT(14+JT)).LE.8.OR.MINT(14+JT).EQ.21) MSPLI=MSPLI+1
+ IF(MSPLI.EQ.2) THEN
+ KFLH=MINT(14+JT)
+ XHRD=VINT(140+JT)
+ Q2HRD=VINT(54)
+ MINT(105)=MINT(102+JT)
+ MINT(109)=MINT(106+JT)
+ VINT(120)=VINT(2+JT)
+ IF(MSTP(57).LE.1) THEN
+ CALL PYPDFU(22,XHRD,Q2HRD,XPQ)
+ ELSE
+ CALL PYPDFL(22,XHRD,Q2HRD,XPQ)
+ ENDIF
+ WTMX=4D0*XPQ(KFLH)
+ IF(MSTP(13).EQ.2) THEN
+ Q2PMS=Q2HRD/PMAS(11,1)**2
+ WTMX=WTMX*LOG(MAX(2D0,Q2PMS*(1D0-XHRD)/XHRD**2))
+ ENDIF
+ 330 XE=XHRD**PYR(0)
+ XG=MIN(1D0-1D-10,XHRD/XE)
+ IF(MSTP(57).LE.1) THEN
+ CALL PYPDFU(22,XG,Q2HRD,XPQ)
+ ELSE
+ CALL PYPDFL(22,XG,Q2HRD,XPQ)
+ ENDIF
+ WT=(1D0+(1D0-XE)**2)*XPQ(KFLH)
+ IF(MSTP(13).EQ.2) WT=WT*LOG(MAX(2D0,Q2PMS*(1D0-XE)/XE**2))
+ IF(WT.LT.PYR(0)*WTMX) GOTO 330
+ MINT(18+JT)=1
+ VINT(154+JT)=XE
+ DO 340 KFLS=-25,25
+ XSFX(JT,KFLS)=XPQ(KFLS)
+ 340 CONTINUE
+ ENDIF
+ 350 CONTINUE
+
+C...Pick scale where photon is resolved.
+ Q0S=PARP(15)**2
+ Q1S=VINT(154)**2
+ VINT(283)=0D0
+ IF(MINT(107).EQ.3) THEN
+ IF(MSTP(66).EQ.1) THEN
+ VINT(283)=Q0S*(VINT(54)/Q0S)**PYR(0)
+ ELSEIF(MSTP(66).EQ.2) THEN
+ PS=VINT(3)**2
+ Q2EFF=VINT(54)*((Q0S+PS)/(VINT(54)+PS))*
+ & EXP(PS*(VINT(54)-Q0S)/((VINT(54)+PS)*(Q0S+PS)))
+ Q2INT=SQRT(Q0S*Q2EFF)
+ VINT(283)=Q2INT*(VINT(54)/Q2INT)**PYR(0)
+ ELSEIF(MSTP(66).EQ.3) THEN
+ VINT(283)=Q0S*(Q1S/Q0S)**PYR(0)
+ ELSEIF(MSTP(66).GE.4) THEN
+ PS=0.25D0*VINT(3)**2
+ VINT(283)=(Q0S+PS)*(Q1S+PS)/
+ & (Q0S+PYR(0)*(Q1S-Q0S)+PS)-PS
+ ENDIF
+ ENDIF
+ VINT(284)=0D0
+ IF(MINT(108).EQ.3) THEN
+ IF(MSTP(66).EQ.1) THEN
+ VINT(284)=Q0S*(VINT(54)/Q0S)**PYR(0)
+ ELSEIF(MSTP(66).EQ.2) THEN
+ PS=VINT(4)**2
+ Q2EFF=VINT(54)*((Q0S+PS)/(VINT(54)+PS))*
+ & EXP(PS*(VINT(54)-Q0S)/((VINT(54)+PS)*(Q0S+PS)))
+ Q2INT=SQRT(Q0S*Q2EFF)
+ VINT(284)=Q2INT*(VINT(54)/Q2INT)**PYR(0)
+ ELSEIF(MSTP(66).EQ.3) THEN
+ VINT(284)=Q0S*(Q1S/Q0S)**PYR(0)
+ ELSEIF(MSTP(66).GE.4) THEN
+ PS=0.25D0*VINT(4)**2
+ VINT(284)=(Q0S+PS)*(Q1S+PS)/
+ & (Q0S+PYR(0)*(Q1S-Q0S)+PS)-PS
+ ENDIF
+ ENDIF
+ IF(MINT(121).GT.1) CALL PYSAVE(2,IGA)
+
+C...Format statements for differential cross-section maximum violations.
+ 5000 FORMAT(/1X,'Error: negative cross-section fraction',1P,D11.3,1X,
+ &'in event',1X,I7,'D0'/1X,'Execution stopped!')
+ 5100 FORMAT(1X,'ISUB = ',I3,'; Point of violation:'/1X,'tau =',1P,
+ &D11.3,', y* =',D11.3,', cthe = ',0P,F11.7,', tau'' =',1P,D11.3)
+ 5200 FORMAT(/1X,'Warning: negative cross-section fraction',1P,D11.3,1X,
+ &'in event',1X,I7)
+ 5300 FORMAT(/1X,'Error: maximum violated by',1P,D11.3,1X,
+ &'in event',1X,I7,'D0'/1X,'Execution stopped!')
+ 5400 FORMAT(/1X,'Advisory warning: maximum violated by',1P,D11.3,1X,
+ &'in event',1X,I7)
+ 5500 FORMAT(1X,'XSEC(',I1,',1) increased to',1P,D11.3)
+ 5600 FORMAT(1X,'XSEC(',I2,',1) increased to',1P,D11.3)
+ 5700 FORMAT(1X,'XSEC(',I3,',1) increased to',1P,D11.3)
+ 5800 FORMAT(1X,'XMAXUP(',I1,') increased to',1P,D11.3)
+ 5900 FORMAT(1X,'XMAXUP(',I2,') increased to',1P,D11.3)
+ 6000 FORMAT(1X,'XMAXUP(',I3,') increased to',1P,D11.3)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSCAT
+C...Finds outgoing flavours and event type; sets up the kinematics
+C...and colour flow of the hard scattering
+
+ SUBROUTINE PYSCAT
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Parameter statement for maximum size of showers.
+ PARAMETER (MAXNUR=1000)
+
+C...User process event common block.
+ INTEGER MAXNUP
+ PARAMETER (MAXNUP=500)
+ INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+ DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+ COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+ &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+ &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+ SAVE /HEPEUP/
+
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ SAVE /PYPART/,/PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,
+ &/PYPARS/,/PYINT1/,/PYINT2/,/PYINT3/,/PYINT4/,/PYINT5/,/PYSSMT/,
+ &/PYTCSM/
+C...Local arrays and saved variables
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5),PMQ(2),Z(2),CTHE(2),
+ &PHI(2),KUPPO(100),VINTSV(41:66),ILAB(100)
+ SAVE VINTSV
+
+C...Read out process
+ ISUB=MINT(1)
+ ISUBSV=ISUB
+
+C...Restore information for low-pT processes
+ IF(ISUB.EQ.95.AND.MINT(57).GE.1) THEN
+ DO 100 J=41,66
+ 100 VINT(J)=VINTSV(J)
+ ENDIF
+
+C...Convert H' or A process into equivalent H one
+ IHIGG=1
+ KFHIGG=25
+ IF((ISUB.GE.151.AND.ISUB.LE.160).OR.(ISUB.GE.171.AND.
+ &ISUB.LE.190)) THEN
+ IHIGG=2
+ IF(MOD(ISUB-1,10).GE.5) IHIGG=3
+ KFHIGG=33+IHIGG
+ IF(ISUB.EQ.151.OR.ISUB.EQ.156) ISUB=3
+ IF(ISUB.EQ.152.OR.ISUB.EQ.157) ISUB=102
+ IF(ISUB.EQ.153.OR.ISUB.EQ.158) ISUB=103
+ IF(ISUB.EQ.171.OR.ISUB.EQ.176) ISUB=24
+ IF(ISUB.EQ.172.OR.ISUB.EQ.177) ISUB=26
+ IF(ISUB.EQ.173.OR.ISUB.EQ.178) ISUB=123
+ IF(ISUB.EQ.174.OR.ISUB.EQ.179) ISUB=124
+ IF(ISUB.EQ.181.OR.ISUB.EQ.186) ISUB=121
+ IF(ISUB.EQ.182.OR.ISUB.EQ.187) ISUB=122
+ IF(ISUB.EQ.183.OR.ISUB.EQ.188) ISUB=111
+ IF(ISUB.EQ.184.OR.ISUB.EQ.189) ISUB=112
+ IF(ISUB.EQ.185.OR.ISUB.EQ.190) ISUB=113
+ ENDIF
+
+ IF(ISUB.EQ.401.OR.ISUB.EQ.402) KFHIGG=KFPR(ISUB,1)
+
+C...Convert bottomonium process into equivalent charmonium ones.
+ IF(ISUB.GE.461.AND.ISUB.LE.479) ISUB=ISUB-40
+
+C...Choice of subprocess, number of documentation lines
+ IDOC=6+ISET(ISUB)
+ IF(ISUB.EQ.95) IDOC=8
+ IF(ISET(ISUB).EQ.5) IDOC=9
+ IF(ISET(ISUB).EQ.11) IDOC=4+NUP
+ MINT(3)=IDOC-6
+ IF(IDOC.GE.9.AND.ISET(ISUB).LE.4) IDOC=IDOC+2
+ MINT(4)=IDOC
+ IPU1=MINT(84)+1
+ IPU2=MINT(84)+2
+ IPU3=MINT(84)+3
+ IPU4=MINT(84)+4
+ IPU5=MINT(84)+5
+ IPU6=MINT(84)+6
+
+C...Reset K, P and V vectors. Store incoming particles
+ DO 120 JT=1,MSTP(126)+100
+ I=MINT(83)+JT
+ IF(I.GT.MSTU(4)) GOTO 120
+ DO 110 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 110 CONTINUE
+ 120 CONTINUE
+ DO 140 JT=1,2
+ I=MINT(83)+JT
+ K(I,1)=21
+ K(I,2)=MINT(10+JT)
+ DO 130 J=1,5
+ P(I,J)=VINT(285+5*JT+J)
+ 130 CONTINUE
+ 140 CONTINUE
+ MINT(6)=2
+ KFRES=0
+
+C...Store incoming partons in their CM-frame. Save pdf value.
+ SH=VINT(44)
+ SHR=SQRT(SH)
+ SHP=VINT(26)*VINT(2)
+ SHPR=SQRT(SHP)
+ SHUSER=SHR
+ IF(ISET(ISUB).GE.3.AND.ISET(ISUB).LE.5) SHUSER=SHPR
+ DO 150 JT=1,2
+ I=MINT(84)+JT
+ K(I,1)=14
+ K(I,2)=MINT(14+JT)
+ K(I,3)=MINT(83)+2+JT
+ P(I,3)=0.5D0*SHUSER*(-1D0)**(JT-1)
+ P(I,4)=0.5D0*SHUSER
+ VINT(38+JT)=XSFX(JT,MINT(14+JT))
+ 150 CONTINUE
+
+C...Copy incoming partons to documentation lines
+ DO 170 JT=1,2
+ I1=MINT(83)+4+JT
+ I2=MINT(84)+JT
+ K(I1,1)=21
+ K(I1,2)=K(I2,2)
+ K(I1,3)=I1-2
+ DO 160 J=1,5
+ P(I1,J)=P(I2,J)
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...Choose new quark/lepton flavour for relevant annihilation graphs
+ IF(ISUB.EQ.12.OR.ISUB.EQ.53.OR.ISUB.EQ.54.OR.ISUB.EQ.58.OR.
+ &(ISUB.GE.135.AND.ISUB.LE.140).OR.ISUB.EQ.382.OR.ISUB.EQ.385) THEN
+ IGLGA=21
+ IF(ISUB.EQ.58.OR.(ISUB.GE.137.AND.ISUB.LE.140)) IGLGA=22
+ CALL PYWIDT(IGLGA,SH,WDTP,WDTE)
+ 180 RKFL=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))*PYR(0)
+ DO 190 I=1,MDCY(IGLGA,3)
+ KFLF=KFDP(I+MDCY(IGLGA,2)-1,1)
+ RKFL=RKFL-(WDTE(I,1)+WDTE(I,2)+WDTE(I,4))
+ IF(RKFL.LE.0D0) GOTO 200
+ 190 CONTINUE
+ 200 CONTINUE
+ IF((ISUB.EQ.53.OR.ISUB.EQ.385).AND.MINT(2).LE.2) THEN
+ IF(KFLF.GE.4) GOTO 180
+ ELSEIF((ISUB.EQ.53.OR.ISUB.EQ.385).AND.MINT(2).LE.4) THEN
+ KFLF=4
+ MINT(2)=MINT(2)-2
+ ELSEIF(ISUB.EQ.53.OR.ISUB.EQ.385) THEN
+ KFLF=5
+ MINT(2)=MINT(2)-4
+ ELSEIF(ISUB.EQ.382.AND.ITCM(5).EQ.1.AND.IABS(MINT(15)).LE.2
+ & .AND.IABS(KFLF).GE.3) THEN
+ FACQQB=VINT(58)**2*4D0/9D0*(VINT(45)**2+VINT(46)**2)/
+ & VINT(44)**2
+ FACCIB=VINT(46)**2/RTCM(41)**4
+ IF(FACQQB/(FACQQB+FACCIB).LT.PYR(0)) GOTO 180
+ ELSEIF(ISUB.EQ.382.AND.ITCM(5).EQ.5.AND.MINT(2).EQ.2) THEN
+ KFLF=5
+ MINT(2)=1
+ ELSEIF(ISUB.EQ.382.AND.ITCM(5).EQ.5.AND.MINT(2).EQ.1) THEN
+ IF(KFLF.EQ.5) GOTO 180
+ ELSEIF(ISUB.EQ.54.OR.ISUB.EQ.135.OR.ISUB.EQ.136) THEN
+ IF((KCHG(PYCOMP(KFLF),1)/2D0)**2.LT.PYR(0)) GOTO 180
+ ELSEIF(ISUB.EQ.58.OR.(ISUB.GE.137.AND.ISUB.LE.140)) THEN
+ IF((KCHG(PYCOMP(KFLF),1)/3D0)**2.LT.PYR(0)) GOTO 180
+ ENDIF
+ ENDIF
+
+C...Final state flavours and colour flow: default values
+ JS=1
+ MINT(21)=MINT(15)
+ MINT(22)=MINT(16)
+ MINT(23)=0
+ MINT(24)=0
+ KCC=20
+ KCS=ISIGN(1,MINT(15))
+
+ IF(ISET(ISUB).EQ.11) THEN
+C...User-defined processes: find products
+ MINT(3)=0
+ DO 210 IUP=3,NUP
+ IF(ISTUP(IUP).LT.1.OR.ISTUP(IUP).GT.3) THEN
+ ELSEIF(NUP.EQ.5.AND.IUP.GE.4.AND.MOTHUP(1,4).EQ.3) THEN
+ MINT(21+IUP)=IDUP(IUP)
+ ELSEIF(ISTUP(IUP).EQ.1.AND.(ISTUP(MOTHUP(1,IUP)).EQ.2.OR.
+ & ISTUP(MOTHUP(1,IUP)).EQ.3).AND.IDUP(MOTHUP(1,IUP)).NE.0) THEN
+ ELSEIF(IDUP(IUP).EQ.0) THEN
+ ELSE
+ MINT(3)=MINT(3)+1
+ IF(MINT(3).LE.6) MINT(20+MINT(3))=IDUP(IUP)
+ ENDIF
+ 210 CONTINUE
+
+ ELSEIF(ISUB.LE.10) THEN
+ IF(ISUB.EQ.1) THEN
+C...f + fbar -> gamma*/Z0
+ KFRES=23
+
+ ELSEIF(ISUB.EQ.2) THEN
+C...f + fbar' -> W+/-
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ KFRES=ISIGN(24,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.3) THEN
+C...f + fbar -> h0 (or H0, or A0)
+ KFRES=KFHIGG
+
+ ELSEIF(ISUB.EQ.4) THEN
+C...gamma + W+/- -> W+/-
+
+ ELSEIF(ISUB.EQ.5) THEN
+C...Z0 + Z0 -> h0
+ XH=SH/SHP
+ MINT(21)=MINT(15)
+ MINT(22)=MINT(16)
+ PMQ(1)=PYMASS(MINT(21))
+ PMQ(2)=PYMASS(MINT(22))
+ 220 JT=INT(1.5D0+PYR(0))
+ ZMIN=2D0*PMQ(JT)/SHPR
+ ZMAX=1D0-PMQ(3-JT)/SHPR-(SH-PMQ(JT)**2)/
+ & (SHPR*(SHPR-PMQ(3-JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ Z(JT)=ZMIN+(ZMAX-ZMIN)*PYR(0)
+ IF(-1D0+(1D0+XH)/(1D0-Z(JT))-XH/(1D0-Z(JT))**2.LT.
+ & (1D0-XH)**2/(4D0*XH)*PYR(0)) GOTO 220
+ SQC1=1D0-4D0*PMQ(JT)**2/(Z(JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 220
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(23,1)**2-PMQ(JT)**2)/(Z(JT)*SHP)
+ CTHE(JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(JT)=MIN(1D0,MAX(-1D0,CTHE(JT)))
+ Z(3-JT)=1D0-XH/(1D0-Z(JT))
+ SQC1=1D0-4D0*PMQ(3-JT)**2/(Z(3-JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 220
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(23,1)**2-PMQ(3-JT)**2)/(Z(3-JT)*SHP)
+ CTHE(3-JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(3-JT)=MIN(1D0,MAX(-1D0,CTHE(3-JT)))
+ PHIR=PARU(2)*PYR(0)
+ CPHI=COS(PHIR)
+ ANG=CTHE(1)*CTHE(2)-SQRT(1D0-CTHE(1)**2)*
+ & SQRT(1D0-CTHE(2)**2)*CPHI
+ Z1=2D0-Z(JT)
+ Z2=ANG*SQRT(Z(JT)**2-4D0*PMQ(JT)**2/SHP)
+ Z3=1D0-Z(JT)-XH+(PMQ(1)**2+PMQ(2)**2)/SHP
+ Z(3-JT)=2D0/(Z1**2-Z2**2)*(Z1*Z3+Z2*SQRT(Z3**2-(Z1**2-Z2**2)*
+ & PMQ(3-JT)**2/SHP))
+ ZMIN=2D0*PMQ(3-JT)/SHPR
+ ZMAX=1D0-PMQ(JT)/SHPR-(SH-PMQ(3-JT)**2)/(SHPR*(SHPR-PMQ(JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(Z(3-JT).LT.ZMIN.OR.Z(3-JT).GT.ZMAX) GOTO 220
+ KCC=22
+ KFRES=25
+
+ ELSEIF(ISUB.EQ.6) THEN
+C...Z0 + W+/- -> W+/-
+
+ ELSEIF(ISUB.EQ.7) THEN
+C...W+ + W- -> Z0
+
+ ELSEIF(ISUB.EQ.8) THEN
+C...W+ + W- -> h0
+ XH=SH/SHP
+ 230 DO 260 JT=1,2
+ I=MINT(14+JT)
+ IA=IABS(I)
+ IF(IA.LE.10) THEN
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 240 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 240
+ MINT(20+JT)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 250
+ 240 CONTINUE
+ ELSE
+ IB=2*((IA+1)/2)-1+MOD(IA,2)
+ MINT(20+JT)=ISIGN(IB,I)
+ ENDIF
+ 250 PMQ(JT)=PYMASS(MINT(20+JT))
+ 260 CONTINUE
+ JT=INT(1.5D0+PYR(0))
+ ZMIN=2D0*PMQ(JT)/SHPR
+ ZMAX=1D0-PMQ(3-JT)/SHPR-(SH-PMQ(JT)**2)/
+ & (SHPR*(SHPR-PMQ(3-JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(ZMIN.GE.ZMAX) GOTO 230
+ Z(JT)=ZMIN+(ZMAX-ZMIN)*PYR(0)
+ IF(-1D0+(1D0+XH)/(1D0-Z(JT))-XH/(1D0-Z(JT))**2.LT.
+ & (1D0-XH)**2/(4D0*XH)*PYR(0)) GOTO 230
+ SQC1=1D0-4D0*PMQ(JT)**2/(Z(JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 230
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(24,1)**2-PMQ(JT)**2)/(Z(JT)*SHP)
+ CTHE(JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(JT)=MIN(1D0,MAX(-1D0,CTHE(JT)))
+ Z(3-JT)=1D0-XH/(1D0-Z(JT))
+ SQC1=1D0-4D0*PMQ(3-JT)**2/(Z(3-JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 230
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(24,1)**2-PMQ(3-JT)**2)/(Z(3-JT)*SHP)
+ CTHE(3-JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(3-JT)=MIN(1D0,MAX(-1D0,CTHE(3-JT)))
+ PHIR=PARU(2)*PYR(0)
+ CPHI=COS(PHIR)
+ ANG=CTHE(1)*CTHE(2)-SQRT(1D0-CTHE(1)**2)*
+ & SQRT(1D0-CTHE(2)**2)*CPHI
+ Z1=2D0-Z(JT)
+ Z2=ANG*SQRT(Z(JT)**2-4D0*PMQ(JT)**2/SHP)
+ Z3=1D0-Z(JT)-XH+(PMQ(1)**2+PMQ(2)**2)/SHP
+ Z(3-JT)=2D0/(Z1**2-Z2**2)*(Z1*Z3+Z2*SQRT(Z3**2-(Z1**2-Z2**2)*
+ & PMQ(3-JT)**2/SHP))
+ ZMIN=2D0*PMQ(3-JT)/SHPR
+ ZMAX=1D0-PMQ(JT)/SHPR-(SH-PMQ(3-JT)**2)/(SHPR*(SHPR-PMQ(JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(Z(3-JT).LT.ZMIN.OR.Z(3-JT).GT.ZMAX) GOTO 230
+ KCC=22
+ KFRES=25
+
+ ELSEIF(ISUB.EQ.10) THEN
+C...f + f' -> f + f' (gamma/Z/W exchange); th = (p(f)-p(f))**2
+ IF(MINT(2).EQ.1) THEN
+ KCC=22
+ ELSE
+C...W exchange: need to mix flavours according to CKM matrix
+ DO 280 JT=1,2
+ I=MINT(14+JT)
+ IA=IABS(I)
+ IF(IA.LE.10) THEN
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 270 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 270
+ MINT(20+JT)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 280
+ 270 CONTINUE
+ ELSE
+ IB=2*((IA+1)/2)-1+MOD(IA,2)
+ MINT(20+JT)=ISIGN(IB,I)
+ ENDIF
+ 280 CONTINUE
+ KCC=22
+ ENDIF
+ ENDIF
+
+ ELSEIF(ISUB.LE.20) THEN
+ IF(ISUB.EQ.11) THEN
+C...f + f' -> f + f' (g exchange); th = (p(f)-p(f))**2
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+
+ ELSEIF(ISUB.EQ.12) THEN
+C...f + fbar -> f' + fbar'; th = (p(f)-p(f'))**2
+ MINT(21)=ISIGN(KFLF,MINT(15))
+ MINT(22)=-MINT(21)
+ KCC=4
+
+ ELSEIF(ISUB.EQ.13) THEN
+C...f + fbar -> g + g; th arbitrary
+ MINT(21)=21
+ MINT(22)=21
+ KCC=MINT(2)+4
+
+ ELSEIF(ISUB.EQ.14) THEN
+C...f + fbar -> g + gamma; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=21
+ MINT(23-JS)=22
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.15) THEN
+C...f + fbar -> g + Z0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=21
+ MINT(23-JS)=23
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.16) THEN
+C...f + fbar' -> g + W+/-; th = (p(f)-p(W-))**2 or (p(fbar')-p(W+))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MINT(15)*(KCH1+KCH2).LT.0) JS=2
+ MINT(20+JS)=21
+ MINT(23-JS)=ISIGN(24,KCH1+KCH2)
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.17) THEN
+C...f + fbar -> g + h0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=21
+ MINT(23-JS)=25
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.18) THEN
+C...f + fbar -> gamma + gamma; th arbitrary
+ MINT(21)=22
+ MINT(22)=22
+
+ ELSEIF(ISUB.EQ.19) THEN
+C...f + fbar -> gamma + Z0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=22
+ MINT(23-JS)=23
+
+ ELSEIF(ISUB.EQ.20) THEN
+C...f + fbar' -> gamma + W+/-; th = (p(f)-p(W-))**2 or
+C...(p(fbar')-p(W+))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MINT(15)*(KCH1+KCH2).LT.0) JS=2
+ MINT(20+JS)=22
+ MINT(23-JS)=ISIGN(24,KCH1+KCH2)
+ ENDIF
+
+ ELSEIF(ISUB.LE.30) THEN
+ IF(ISUB.EQ.21) THEN
+C...f + fbar -> gamma + h0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=22
+ MINT(23-JS)=25
+
+ ELSEIF(ISUB.EQ.22) THEN
+C...f + fbar -> Z0 + Z0; th arbitrary
+ MINT(21)=23
+ MINT(22)=23
+
+ ELSEIF(ISUB.EQ.23) THEN
+C...f + fbar' -> Z0 + W+/-; th = (p(f)-p(W-))**2 or (p(fbar')-p(W+))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MINT(15)*(KCH1+KCH2).LT.0) JS=2
+ MINT(20+JS)=23
+ MINT(23-JS)=ISIGN(24,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.24) THEN
+C...f + fbar -> Z0 + h0 (or H0, or A0); th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=23
+ MINT(23-JS)=KFHIGG
+
+ ELSEIF(ISUB.EQ.25) THEN
+C...f + fbar -> W+ + W-; th = (p(f)-p(W-))**2
+ MINT(21)=-ISIGN(24,MINT(15))
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.26) THEN
+C...f + fbar' -> W+/- + h0 (or H0, or A0);
+C...th = (p(f)-p(W-))**2 or (p(fbar')-p(W+))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MINT(15)*(KCH1+KCH2).GT.0) JS=2
+ MINT(20+JS)=ISIGN(24,KCH1+KCH2)
+ MINT(23-JS)=KFHIGG
+
+ ELSEIF(ISUB.EQ.27) THEN
+C...f + fbar -> h0 + h0
+
+ ELSEIF(ISUB.EQ.28) THEN
+C...f + g -> f + g; th = (p(f)-p(f))**2
+ IF(MINT(15).EQ.21) JS=2
+ KCC=MINT(2)+6
+ IF(MINT(15).EQ.21) KCC=KCC+2
+ IF(MINT(15).NE.21) KCS=ISIGN(1,MINT(15))
+ IF(MINT(16).NE.21) KCS=ISIGN(1,MINT(16))
+
+ ELSEIF(ISUB.EQ.29) THEN
+C...f + g -> f + gamma; th = (p(f)-p(f))**2
+ IF(MINT(15).EQ.21) JS=2
+ MINT(23-JS)=22
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.30) THEN
+C...f + g -> f + Z0; th = (p(f)-p(f))**2
+ IF(MINT(15).EQ.21) JS=2
+ MINT(23-JS)=23
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+ ENDIF
+
+ ELSEIF(ISUB.LE.40) THEN
+ IF(ISUB.EQ.31) THEN
+C...f + g -> f' + W+/-; th = (p(f)-p(f'))**2; choose flavour f'
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(23-JS)=ISIGN(24,KCHG(IA,1)*I)
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 290 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 290
+ MINT(20+JS)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 300
+ 290 CONTINUE
+ 300 KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.32) THEN
+C...f + g -> f + h0; th = (p(f)-p(f))**2
+ IF(MINT(15).EQ.21) JS=2
+ MINT(23-JS)=25
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.33) THEN
+C...f + gamma -> f + g; th=(p(f)-p(f))**2
+ IF(MINT(15).EQ.22) JS=2
+ MINT(23-JS)=21
+ KCC=24+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.34) THEN
+C...f + gamma -> f + gamma; th=(p(f)-p(f))**2
+ IF(MINT(15).EQ.22) JS=2
+ KCC=22
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.35) THEN
+C...f + gamma -> f + Z0; th=(p(f)-p(f))**2
+ IF(MINT(15).EQ.22) JS=2
+ MINT(23-JS)=23
+ KCC=22
+
+ ELSEIF(ISUB.EQ.36) THEN
+C...f + gamma -> f' + W+/-; th=(p(f)-p(f'))**2
+ IF(MINT(15).EQ.22) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(23-JS)=ISIGN(24,KCHG(IA,1)*I)
+ IF(IA.LE.10) THEN
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 310 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 310
+ MINT(20+JS)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 320
+ 310 CONTINUE
+ ELSE
+ IB=2*((IA+1)/2)-1+MOD(IA,2)
+ MINT(20+JS)=ISIGN(IB,I)
+ ENDIF
+ 320 KCC=22
+
+ ELSEIF(ISUB.EQ.37) THEN
+C...f + gamma -> f + h0
+
+ ELSEIF(ISUB.EQ.38) THEN
+C...f + Z0 -> f + g
+
+ ELSEIF(ISUB.EQ.39) THEN
+C...f + Z0 -> f + gamma
+
+ ELSEIF(ISUB.EQ.40) THEN
+C...f + Z0 -> f + Z0
+ ENDIF
+
+ ELSEIF(ISUB.LE.50) THEN
+ IF(ISUB.EQ.41) THEN
+C...f + Z0 -> f' + W+/-
+
+ ELSEIF(ISUB.EQ.42) THEN
+C...f + Z0 -> f + h0
+
+ ELSEIF(ISUB.EQ.43) THEN
+C...f + W+/- -> f' + g
+
+ ELSEIF(ISUB.EQ.44) THEN
+C...f + W+/- -> f' + gamma
+
+ ELSEIF(ISUB.EQ.45) THEN
+C...f + W+/- -> f' + Z0
+
+ ELSEIF(ISUB.EQ.46) THEN
+C...f + W+/- -> f' + W+/-
+
+ ELSEIF(ISUB.EQ.47) THEN
+C...f + W+/- -> f' + h0
+
+ ELSEIF(ISUB.EQ.48) THEN
+C...f + h0 -> f + g
+
+ ELSEIF(ISUB.EQ.49) THEN
+C...f + h0 -> f + gamma
+
+ ELSEIF(ISUB.EQ.50) THEN
+C...f + h0 -> f + Z0
+ ENDIF
+
+ ELSEIF(ISUB.LE.60) THEN
+ IF(ISUB.EQ.51) THEN
+C...f + h0 -> f' + W+/-
+
+ ELSEIF(ISUB.EQ.52) THEN
+C...f + h0 -> f + h0
+
+ ELSEIF(ISUB.EQ.53) THEN
+C...g + g -> f + fbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFLF,KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.54) THEN
+C...g + gamma -> f + fbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFLF,KCS)
+ MINT(22)=-MINT(21)
+ KCC=27
+ IF(MINT(16).EQ.21) KCC=28
+
+ ELSEIF(ISUB.EQ.55) THEN
+C...g + Z0 -> f + fbar
+
+ ELSEIF(ISUB.EQ.56) THEN
+C...g + W+/- -> f + fbar'
+
+ ELSEIF(ISUB.EQ.57) THEN
+C...g + h0 -> f + fbar
+
+ ELSEIF(ISUB.EQ.58) THEN
+C...gamma + gamma -> f + fbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFLF,KCS)
+ MINT(22)=-MINT(21)
+ KCC=21
+
+ ELSEIF(ISUB.EQ.59) THEN
+C...gamma + Z0 -> f + fbar
+
+ ELSEIF(ISUB.EQ.60) THEN
+C...gamma + W+/- -> f + fbar'
+ ENDIF
+
+ ELSEIF(ISUB.LE.70) THEN
+ IF(ISUB.EQ.61) THEN
+C...gamma + h0 -> f + fbar
+
+ ELSEIF(ISUB.EQ.62) THEN
+C...Z0 + Z0 -> f + fbar
+
+ ELSEIF(ISUB.EQ.63) THEN
+C...Z0 + W+/- -> f + fbar'
+
+ ELSEIF(ISUB.EQ.64) THEN
+C...Z0 + h0 -> f + fbar
+
+ ELSEIF(ISUB.EQ.65) THEN
+C...W+ + W- -> f + fbar
+
+ ELSEIF(ISUB.EQ.66) THEN
+C...W+/- + h0 -> f + fbar'
+
+ ELSEIF(ISUB.EQ.67) THEN
+C...h0 + h0 -> f + fbar
+
+ ELSEIF(ISUB.EQ.68) THEN
+C...g + g -> g + g; th arbitrary
+ KCC=MINT(2)+12
+ KCS=(-1)**INT(1.5D0+PYR(0))
+
+ ELSEIF(ISUB.EQ.69) THEN
+C...gamma + gamma -> W+ + W-; th arbitrary
+ MINT(21)=24
+ MINT(22)=-24
+ KCC=21
+
+ ELSEIF(ISUB.EQ.70) THEN
+C...gamma + W+/- -> Z0 + W+/-; th=(p(W)-p(W))**2
+ IF(MINT(15).EQ.22) MINT(21)=23
+ IF(MINT(16).EQ.22) MINT(22)=23
+ KCC=21
+ ENDIF
+
+ ELSEIF(ISUB.LE.80) THEN
+ IF(ISUB.EQ.71.OR.ISUB.EQ.72) THEN
+C...Z0 + Z0 -> Z0 + Z0; Z0 + Z0 -> W+ + W-
+ XH=SH/SHP
+ MINT(21)=MINT(15)
+ MINT(22)=MINT(16)
+ PMQ(1)=PYMASS(MINT(21))
+ PMQ(2)=PYMASS(MINT(22))
+ 330 JT=INT(1.5D0+PYR(0))
+ ZMIN=2D0*PMQ(JT)/SHPR
+ ZMAX=1D0-PMQ(3-JT)/SHPR-(SH-PMQ(JT)**2)/
+ & (SHPR*(SHPR-PMQ(3-JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ Z(JT)=ZMIN+(ZMAX-ZMIN)*PYR(0)
+ IF(-1D0+(1D0+XH)/(1D0-Z(JT))-XH/(1D0-Z(JT))**2.LT.
+ & (1D0-XH)**2/(4D0*XH)*PYR(0)) GOTO 330
+ SQC1=1D0-4D0*PMQ(JT)**2/(Z(JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 330
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(23,1)**2-PMQ(JT)**2)/(Z(JT)*SHP)
+ CTHE(JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(JT)=MIN(1D0,MAX(-1D0,CTHE(JT)))
+ Z(3-JT)=1D0-XH/(1D0-Z(JT))
+ SQC1=1D0-4D0*PMQ(3-JT)**2/(Z(3-JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 330
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(23,1)**2-PMQ(3-JT)**2)/(Z(3-JT)*SHP)
+ CTHE(3-JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(3-JT)=MIN(1D0,MAX(-1D0,CTHE(3-JT)))
+ PHIR=PARU(2)*PYR(0)
+ CPHI=COS(PHIR)
+ ANG=CTHE(1)*CTHE(2)-SQRT(1D0-CTHE(1)**2)*
+ & SQRT(1D0-CTHE(2)**2)*CPHI
+ Z1=2D0-Z(JT)
+ Z2=ANG*SQRT(Z(JT)**2-4D0*PMQ(JT)**2/SHP)
+ Z3=1D0-Z(JT)-XH+(PMQ(1)**2+PMQ(2)**2)/SHP
+ Z(3-JT)=2D0/(Z1**2-Z2**2)*(Z1*Z3+Z2*SQRT(Z3**2-(Z1**2-Z2**2)*
+ & PMQ(3-JT)**2/SHP))
+ ZMIN=2D0*PMQ(3-JT)/SHPR
+ ZMAX=1D0-PMQ(JT)/SHPR-(SH-PMQ(3-JT)**2)/(SHPR*(SHPR-PMQ(JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(Z(3-JT).LT.ZMIN.OR.Z(3-JT).GT.ZMAX) GOTO 330
+ KCC=22
+
+ ELSEIF(ISUB.EQ.73) THEN
+C...Z0 + W+/- -> Z0 + W+/-
+ JS=MINT(2)
+ XH=SH/SHP
+ 340 JT=3-MINT(2)
+ I=MINT(14+JT)
+ IA=IABS(I)
+ IF(IA.LE.10) THEN
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 350 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 350
+ MINT(20+JT)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 360
+ 350 CONTINUE
+ ELSE
+ IB=2*((IA+1)/2)-1+MOD(IA,2)
+ MINT(20+JT)=ISIGN(IB,I)
+ ENDIF
+ 360 PMQ(JT)=PYMASS(MINT(20+JT))
+ MINT(23-JT)=MINT(17-JT)
+ PMQ(3-JT)=PYMASS(MINT(23-JT))
+ JT=INT(1.5D0+PYR(0))
+ ZMIN=2D0*PMQ(JT)/SHPR
+ ZMAX=1D0-PMQ(3-JT)/SHPR-(SH-PMQ(JT)**2)/
+ & (SHPR*(SHPR-PMQ(3-JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(ZMIN.GE.ZMAX) GOTO 340
+ Z(JT)=ZMIN+(ZMAX-ZMIN)*PYR(0)
+ IF(-1D0+(1D0+XH)/(1D0-Z(JT))-XH/(1D0-Z(JT))**2.LT.
+ & (1D0-XH)**2/(4D0*XH)*PYR(0)) GOTO 340
+ SQC1=1D0-4D0*PMQ(JT)**2/(Z(JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 340
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(23,1)**2-PMQ(JT)**2)/(Z(JT)*SHP)
+ CTHE(JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(JT)=MIN(1D0,MAX(-1D0,CTHE(JT)))
+ Z(3-JT)=1D0-XH/(1D0-Z(JT))
+ SQC1=1D0-4D0*PMQ(3-JT)**2/(Z(3-JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 340
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(23,1)**2-PMQ(3-JT)**2)/(Z(3-JT)*SHP)
+ CTHE(3-JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(3-JT)=MIN(1D0,MAX(-1D0,CTHE(3-JT)))
+ PHIR=PARU(2)*PYR(0)
+ CPHI=COS(PHIR)
+ ANG=CTHE(1)*CTHE(2)-SQRT(1D0-CTHE(1)**2)*
+ & SQRT(1D0-CTHE(2)**2)*CPHI
+ Z1=2D0-Z(JT)
+ Z2=ANG*SQRT(Z(JT)**2-4D0*PMQ(JT)**2/SHP)
+ Z3=1D0-Z(JT)-XH+(PMQ(1)**2+PMQ(2)**2)/SHP
+ Z(3-JT)=2D0/(Z1**2-Z2**2)*(Z1*Z3+Z2*SQRT(Z3**2-(Z1**2-Z2**2)*
+ & PMQ(3-JT)**2/SHP))
+ ZMIN=2D0*PMQ(3-JT)/SHPR
+ ZMAX=1D0-PMQ(JT)/SHPR-(SH-PMQ(3-JT)**2)/(SHPR*(SHPR-PMQ(JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(Z(3-JT).LT.ZMIN.OR.Z(3-JT).GT.ZMAX) GOTO 340
+ KCC=22
+
+ ELSEIF(ISUB.EQ.74) THEN
+C...Z0 + h0 -> Z0 + h0
+
+ ELSEIF(ISUB.EQ.75) THEN
+C...W+ + W- -> gamma + gamma
+
+ ELSEIF(ISUB.EQ.76.OR.ISUB.EQ.77) THEN
+C...W+ + W- -> Z0 + Z0; W+ + W- -> W+ + W-
+ XH=SH/SHP
+ 370 DO 400 JT=1,2
+ I=MINT(14+JT)
+ IA=IABS(I)
+ IF(IA.LE.10) THEN
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 380 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 380
+ MINT(20+JT)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 390
+ 380 CONTINUE
+ ELSE
+ IB=2*((IA+1)/2)-1+MOD(IA,2)
+ MINT(20+JT)=ISIGN(IB,I)
+ ENDIF
+ 390 PMQ(JT)=PYMASS(MINT(20+JT))
+ 400 CONTINUE
+ JT=INT(1.5D0+PYR(0))
+ ZMIN=2D0*PMQ(JT)/SHPR
+ ZMAX=1D0-PMQ(3-JT)/SHPR-(SH-PMQ(JT)**2)/
+ & (SHPR*(SHPR-PMQ(3-JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(ZMIN.GE.ZMAX) GOTO 370
+ Z(JT)=ZMIN+(ZMAX-ZMIN)*PYR(0)
+ IF(-1D0+(1D0+XH)/(1D0-Z(JT))-XH/(1D0-Z(JT))**2.LT.
+ & (1D0-XH)**2/(4D0*XH)*PYR(0)) GOTO 370
+ SQC1=1D0-4D0*PMQ(JT)**2/(Z(JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 370
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(24,1)**2-PMQ(JT)**2)/(Z(JT)*SHP)
+ CTHE(JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(JT)=MIN(1D0,MAX(-1D0,CTHE(JT)))
+ Z(3-JT)=1D0-XH/(1D0-Z(JT))
+ SQC1=1D0-4D0*PMQ(3-JT)**2/(Z(3-JT)**2*SHP)
+ IF(SQC1.LT.1D-8) GOTO 370
+ C1=SQRT(SQC1)
+ C2=1D0+2D0*(PMAS(24,1)**2-PMQ(3-JT)**2)/(Z(3-JT)*SHP)
+ CTHE(3-JT)=(C2-(C2**2-C1**2)/(C2+(2D0*PYR(0)-1D0)*C1))/C1
+ CTHE(3-JT)=MIN(1D0,MAX(-1D0,CTHE(3-JT)))
+ PHIR=PARU(2)*PYR(0)
+ CPHI=COS(PHIR)
+ ANG=CTHE(1)*CTHE(2)-SQRT(1D0-CTHE(1)**2)*
+ & SQRT(1D0-CTHE(2)**2)*CPHI
+ Z1=2D0-Z(JT)
+ Z2=ANG*SQRT(Z(JT)**2-4D0*PMQ(JT)**2/SHP)
+ Z3=1D0-Z(JT)-XH+(PMQ(1)**2+PMQ(2)**2)/SHP
+ Z(3-JT)=2D0/(Z1**2-Z2**2)*(Z1*Z3+Z2*SQRT(Z3**2-(Z1**2-Z2**2)*
+ & PMQ(3-JT)**2/SHP))
+ ZMIN=2D0*PMQ(3-JT)/SHPR
+ ZMAX=1D0-PMQ(JT)/SHPR-(SH-PMQ(3-JT)**2)/(SHPR*(SHPR-PMQ(JT)))
+ ZMAX=MIN(1D0-XH,ZMAX)
+ IF(Z(3-JT).LT.ZMIN.OR.Z(3-JT).GT.ZMAX) GOTO 370
+ KCC=22
+
+ ELSEIF(ISUB.EQ.78) THEN
+C...W+/- + h0 -> W+/- + h0
+
+ ELSEIF(ISUB.EQ.79) THEN
+C...h0 + h0 -> h0 + h0
+
+ ELSEIF(ISUB.EQ.80) THEN
+C...q + gamma -> q' + pi+/-; th=(p(q)-p(q'))**2
+ IF(MINT(15).EQ.22) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(23-JS)=ISIGN(211,KCHG(IA,1)*I)
+ IB=3-IA
+ MINT(20+JS)=ISIGN(IB,I)
+ KCC=22
+ ENDIF
+
+ ELSEIF(ISUB.LE.90) THEN
+ IF(ISUB.EQ.81) THEN
+C...q + qbar -> Q + Qbar; th = (p(q)-p(Q))**2
+ MINT(21)=ISIGN(MINT(55),MINT(15))
+ MINT(22)=-MINT(21)
+ KCC=4
+
+ ELSEIF(ISUB.EQ.82) THEN
+C...g + g -> Q + Qbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(MINT(55),KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.83) THEN
+C...f + q -> f' + Q; th = (p(f) - p(f'))**2
+ KFOLD=MINT(16)
+ IF(MINT(2).EQ.2) KFOLD=MINT(15)
+ KFAOLD=IABS(KFOLD)
+ IF(KFAOLD.GT.10) THEN
+ KFANEW=KFAOLD+2*MOD(KFAOLD,2)-1
+ ELSE
+ RCKM=VINT(180+KFOLD)*PYR(0)
+ IPM=(5-ISIGN(1,KFOLD))/2
+ KFANEW=-MOD(KFAOLD+1,2)
+ 410 KFANEW=KFANEW+2
+ IDC=MDCY(KFAOLD,2)+(KFANEW+1)/2+2
+ IF(MDME(IDC,1).EQ.1.OR.MDME(IDC,1).EQ.IPM) THEN
+ IF(MOD(KFAOLD,2).EQ.0) RCKM=RCKM-
+ & VCKM(KFAOLD/2,(KFANEW+1)/2)
+ IF(MOD(KFAOLD,2).EQ.1) RCKM=RCKM-
+ & VCKM(KFANEW/2,(KFAOLD+1)/2)
+ ENDIF
+ IF(KFANEW.LE.6.AND.RCKM.GT.0D0) GOTO 410
+ ENDIF
+ IF(MINT(2).EQ.1) THEN
+ MINT(21)=ISIGN(MINT(55),MINT(15))
+ MINT(22)=ISIGN(KFANEW,MINT(16))
+ ELSE
+ MINT(21)=ISIGN(KFANEW,MINT(15))
+ MINT(22)=ISIGN(MINT(55),MINT(16))
+ JS=2
+ ENDIF
+ KCC=22
+
+ ELSEIF(ISUB.EQ.84) THEN
+C...g + gamma -> Q + Qbar; th arbitary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(MINT(55),KCS)
+ MINT(22)=-MINT(21)
+ KCC=27
+ IF(MINT(16).EQ.21) KCC=28
+
+ ELSEIF(ISUB.EQ.85) THEN
+C...gamma + gamma -> F + Fbar; th arbitary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(MINT(56),KCS)
+ MINT(22)=-MINT(21)
+ KCC=21
+
+ ELSEIF(ISUB.GE.86.AND.ISUB.LE.89) THEN
+C...g + g -> (J/Psi, chi_0c, chi_1c or chi_2c) + g
+ MINT(21)=KFPR(ISUB,1)
+ MINT(22)=KFPR(ISUB,2)
+ KCC=24
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ ENDIF
+
+ ELSEIF(ISUB.LE.100) THEN
+ IF(ISUB.EQ.95) THEN
+C...Low-pT ( = energyless g + g -> g + g)
+ KCC=MINT(2)+12
+ KCS=(-1)**INT(1.5D0+PYR(0))
+
+ ELSEIF(ISUB.EQ.96) THEN
+C...Multiple interactions (should be reassigned to QCD process)
+ ENDIF
+
+ ELSEIF(ISUB.LE.110) THEN
+ IF(ISUB.EQ.101) THEN
+C...g + g -> gamma*/Z0
+ KCC=21
+ KFRES=22
+
+ ELSEIF(ISUB.EQ.102) THEN
+C...g + g -> h0 (or H0, or A0)
+ KCC=21
+ KFRES=KFHIGG
+
+ ELSEIF(ISUB.EQ.103) THEN
+C...gamma + gamma -> h0 (or H0, or A0)
+ KCC=21
+ KFRES=KFHIGG
+
+ ELSEIF(ISUB.EQ.104.OR.ISUB.EQ.105) THEN
+C...g + g -> chi_0c or chi_2c.
+ KCC=21
+ KFRES=KFPR(ISUB,1)
+
+ ELSEIF(ISUB.EQ.106) THEN
+C...g + g -> J/Psi + gamma
+ MINT(21)=KFPR(ISUB,1)
+ MINT(22)=KFPR(ISUB,2)
+ KCC=21
+
+ ELSEIF(ISUB.EQ.107) THEN
+C...g + gamma -> J/Psi + g
+ MINT(21)=KFPR(ISUB,1)
+ MINT(22)=KFPR(ISUB,2)
+ KCC=22
+ IF(MINT(16).EQ.22) KCC=33
+
+ ELSEIF(ISUB.EQ.108) THEN
+C...gamma + gamma -> J/Psi + gamma
+ MINT(21)=KFPR(ISUB,1)
+ MINT(22)=KFPR(ISUB,2)
+
+ ELSEIF(ISUB.EQ.110) THEN
+C...f + fbar -> gamma + h0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=22
+ MINT(23-JS)=KFHIGG
+ ENDIF
+
+ ELSEIF(ISUB.LE.120) THEN
+ IF(ISUB.EQ.111) THEN
+C...f + fbar -> g + h0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=21
+ MINT(23-JS)=KFHIGG
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.112) THEN
+C...f + g -> f + h0; th = (p(f) - p(f))**2
+ IF(MINT(15).EQ.21) JS=2
+ MINT(23-JS)=KFHIGG
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.113) THEN
+C...g + g -> g + h0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(23-JS)=KFHIGG
+ KCC=22+JS
+ KCS=(-1)**INT(1.5D0+PYR(0))
+
+ ELSEIF(ISUB.EQ.114) THEN
+C...g + g -> gamma + gamma; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(21)=22
+ MINT(22)=22
+ KCC=21
+
+ ELSEIF(ISUB.EQ.115) THEN
+C...g + g -> g + gamma; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(23-JS)=22
+ KCC=22+JS
+ KCS=(-1)**INT(1.5D0+PYR(0))
+
+ ELSEIF(ISUB.EQ.116) THEN
+C...g + g -> gamma + Z0
+
+ ELSEIF(ISUB.EQ.117) THEN
+C...g + g -> Z0 + Z0
+
+ ELSEIF(ISUB.EQ.118) THEN
+C...g + g -> W+ + W-
+ ENDIF
+
+ ELSEIF(ISUB.LE.140) THEN
+ IF(ISUB.EQ.121) THEN
+C...g + g -> Q + Qbar + h0
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFPR(ISUBSV,2),KCS)
+ MINT(22)=-MINT(21)
+ KCC=11+INT(0.5D0+PYR(0))
+ KFRES=KFHIGG
+
+ ELSEIF(ISUB.EQ.122) THEN
+C...q + qbar -> Q + Qbar + h0
+ MINT(21)=ISIGN(KFPR(ISUBSV,2),MINT(15))
+ MINT(22)=-MINT(21)
+ KCC=4
+ KFRES=KFHIGG
+
+ ELSEIF(ISUB.EQ.123) THEN
+C...f + f' -> f + f' + h0 (or H0, or A0) (Z0 + Z0 -> h0 as
+C...inner process)
+ KCC=22
+ KFRES=KFHIGG
+
+ ELSEIF(ISUB.EQ.124) THEN
+C...f + f' -> f" + f"' + h0 (or H0, or A) (W+ + W- -> h0 as
+C...inner process)
+ DO 430 JT=1,2
+ I=MINT(14+JT)
+ IA=IABS(I)
+ IF(IA.LE.10) THEN
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 420 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 420
+ MINT(20+JT)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 430
+ 420 CONTINUE
+ ELSE
+ IB=2*((IA+1)/2)-1+MOD(IA,2)
+ MINT(20+JT)=ISIGN(IB,I)
+ ENDIF
+ 430 CONTINUE
+ KCC=22
+ KFRES=KFHIGG
+
+ ELSEIF(ISUB.EQ.131.OR.ISUB.EQ.132) THEN
+C...f + gamma*_(T,L) -> f + g; th=(p(f)-p(f))**2
+ IF(MINT(15).EQ.22) JS=2
+ MINT(23-JS)=21
+ KCC=24+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.133.OR.ISUB.EQ.134) THEN
+C...f + gamma*_(T,L) -> f + gamma; th=(p(f)-p(f))**2
+ IF(MINT(15).EQ.22) JS=2
+ KCC=22
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.135.OR.ISUB.EQ.136) THEN
+C...g + gamma*_(T,L) -> f + fbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFLF,KCS)
+ MINT(22)=-MINT(21)
+ KCC=27
+ IF(MINT(16).EQ.21) KCC=28
+
+ ELSEIF(ISUB.GE.137.AND.ISUB.LE.140) THEN
+C...gamma*_(T,L) + gamma*_(T,L) -> f + fbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFLF,KCS)
+ MINT(22)=-MINT(21)
+ KCC=21
+
+ ENDIF
+
+ ELSEIF(ISUB.LE.160) THEN
+ IF(ISUB.EQ.141) THEN
+C...f + fbar -> gamma*/Z0/Z'0
+ KFRES=32
+
+ ELSEIF(ISUB.EQ.142) THEN
+C...f + fbar' -> W'+/-
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ KFRES=ISIGN(34,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.143) THEN
+C...f + fbar' -> H+/-
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ KFRES=ISIGN(37,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.144) THEN
+C...f + fbar' -> R
+ KFRES=ISIGN(41,MINT(15)+MINT(16))
+
+ ELSEIF(ISUB.EQ.145) THEN
+C...q + l -> LQ (leptoquark)
+ IF(IABS(MINT(16)).LE.8) JS=2
+ KFRES=ISIGN(42,MINT(14+JS))
+ KCC=28+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.146) THEN
+C...e + gamma -> e* (excited lepton)
+ IF(MINT(15).EQ.22) JS=2
+ KFRES=ISIGN(KFPR(ISUB,1),MINT(14+JS))
+ KCC=22
+
+ ELSEIF(ISUB.EQ.147.OR.ISUB.EQ.148) THEN
+C...q + g -> q* (excited quark)
+ IF(MINT(15).EQ.21) JS=2
+ KFRES=ISIGN(KFPR(ISUB,1),MINT(14+JS))
+ KCC=30+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.149) THEN
+C...g + g -> eta_tc
+ KFRES=KTECHN+331
+ KCC=23
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ ENDIF
+
+ ELSEIF(ISUB.LE.200) THEN
+ IF(ISUB.EQ.161) THEN
+C...f + g -> f' + H+/-; th = (p(f)-p(f'))**2
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(23-JS)=ISIGN(37,KCHG(IA,1)*I)
+ IB=IA+MOD(IA,2)-MOD(IA+1,2)
+ MINT(20+JS)=ISIGN(IB,I)
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.162) THEN
+C...q + g -> LQ + lbar; LQ=leptoquark; th=(p(q)-p(LQ))^2
+ IF(MINT(15).EQ.21) JS=2
+ MINT(20+JS)=ISIGN(42,MINT(14+JS))
+ KFLQL=KFDP(MDCY(42,2),2)
+ MINT(23-JS)=-ISIGN(KFLQL,MINT(14+JS))
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.163) THEN
+C...g + g -> LQ + LQbar; LQ=leptoquark; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(42,KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.164) THEN
+C...q + qbar -> LQ + LQbar; LQ=leptoquark; th=(p(q)-p(LQ))**2
+ MINT(21)=ISIGN(42,MINT(15))
+ MINT(22)=-MINT(21)
+ KCC=4
+
+ ELSEIF(ISUB.EQ.165) THEN
+C...q + qbar -> l- + l+; th=(p(q)-p(l-))**2
+ MINT(21)=ISIGN(KFPR(ISUB,1),MINT(15))
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.166) THEN
+C...q + qbar' -> l + nu; th=(p(u)-p(nu))**2 or (p(ubar)-p(nubar))**2
+ IF(MOD(MINT(15),2).EQ.0) THEN
+ MINT(21)=ISIGN(KFPR(ISUB,1)+1,MINT(15))
+ MINT(22)=ISIGN(KFPR(ISUB,1),MINT(16))
+ ELSE
+ MINT(21)=ISIGN(KFPR(ISUB,1),MINT(15))
+ MINT(22)=ISIGN(KFPR(ISUB,1)+1,MINT(16))
+ ENDIF
+
+ ELSEIF(ISUB.EQ.167.OR.ISUB.EQ.168) THEN
+C...q + q' -> q" + q* (excited quark)
+ KFQSTR=KFPR(ISUB,2)
+ KFQEXC=MOD(KFQSTR,KEXCIT)
+ JS=MINT(2)
+ MINT(20+JS)=ISIGN(KFQSTR,MINT(14+JS))
+ IF(IABS(MINT(15)).NE.KFQEXC.AND.IABS(MINT(16)).NE.KFQEXC)
+ & MINT(23-JS)=ISIGN(KFQEXC,MINT(17-JS))
+ KCC=22
+ JS=3-JS
+
+ ELSEIF(ISUB.EQ.169) THEN
+C...q + qbar -> e + e* (excited lepton)
+ KFQSTR=KFPR(ISUB,2)
+ KFQEXC=MOD(KFQSTR,KEXCIT)
+ JS=MINT(2)
+ MINT(20+JS)=ISIGN(KFQSTR,MINT(14+JS))
+ MINT(23-JS)=ISIGN(KFQEXC,MINT(17-JS))
+ JS=3-JS
+
+ ELSEIF(ISUB.EQ.191) THEN
+C...f + fbar -> rho_tc0.
+ KFRES=KTECHN+113
+
+ ELSEIF(ISUB.EQ.192) THEN
+C...f + fbar' -> rho_tc+/-
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ KFRES=ISIGN(KTECHN+213,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.193) THEN
+C...f + fbar -> omega_tc0.
+ KFRES=KTECHN+223
+
+ ELSEIF(ISUB.EQ.194) THEN
+C...f + fbar -> f' + fbar' via mixture of s-channel
+C...rho_tc and omega_tc; th=(p(f)-p(f'))**2
+ MINT(21)=ISIGN(KFPR(ISUB,1),MINT(15))
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.195) THEN
+C...f + fbar' -> f'' + fbar''' via s-channel
+C...rho_tc+ th=(p(f)-p(f'))**2
+C...q + qbar' -> l + nu; th=(p(u)-p(nu))**2 or (p(ubar)-p(nubar))**2
+ IF(MOD(MINT(15),2).EQ.0) THEN
+ MINT(21)=ISIGN(KFPR(ISUB,1)+1,MINT(15))
+ MINT(22)=ISIGN(KFPR(ISUB,1),MINT(16))
+ ELSE
+ MINT(21)=ISIGN(KFPR(ISUB,1),MINT(15))
+ MINT(22)=ISIGN(KFPR(ISUB,1)+1,MINT(16))
+ ENDIF
+ ENDIF
+
+CMRENNA++
+ ELSEIF(ISUB.LE.215) THEN
+ IF(ISUB.EQ.201) THEN
+C...f + fbar -> ~e_L + ~e_Lbar
+ MINT(21)=ISIGN(KSUSY1+11,KCS)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.202) THEN
+C...f + fbar -> ~e_R + ~e_Rbar
+ MINT(21)=ISIGN(KSUSY2+11,KCS)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.203) THEN
+C...f + fbar -> ~e_L + ~e_Rbar
+ IF(MINT(15).LT.0) JS=2
+ IF(MINT(2).EQ.1) THEN
+ MINT(20+JS)=KFPR(ISUB,1)
+ MINT(23-JS)=-KFPR(ISUB,2)
+ ELSE
+ MINT(20+JS)=-KFPR(ISUB,1)
+ MINT(23-JS)=KFPR(ISUB,2)
+ ENDIF
+
+ ELSEIF(ISUB.EQ.204) THEN
+C...f + fbar -> ~mu_L + ~mu_Lbar
+ MINT(21)=ISIGN(KSUSY1+13,KCS)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.205) THEN
+C...f + fbar -> ~mu_R + ~mu_Rbar
+ MINT(21)=ISIGN(KSUSY2+13,KCS)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.206) THEN
+C...f + fbar -> ~mu_L + ~mu_Rbar
+ IF(MINT(15).LT.0) JS=2
+ IF(MINT(2).EQ.1) THEN
+ MINT(20+JS)=KFPR(ISUB,1)
+ MINT(23-JS)=-KFPR(ISUB,2)
+ ELSE
+ MINT(20+JS)=-KFPR(ISUB,1)
+ MINT(23-JS)=KFPR(ISUB,2)
+ ENDIF
+
+ ELSEIF(ISUB.EQ.207) THEN
+C...f + fbar -> ~tau_1 + ~tau_1bar
+ MINT(21)=ISIGN(KSUSY1+15,KCS)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.208) THEN
+C...f + fbar -> ~tau_2 + ~tau_2bar
+ MINT(21)=ISIGN(KSUSY2+15,KCS)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.209) THEN
+C...f + fbar -> ~tau_1 + ~tau_2bar
+ IF(MINT(15).LT.0) JS=2
+ IF(MINT(2).EQ.1) THEN
+ MINT(20+JS)=KFPR(ISUB,1)
+ MINT(23-JS)=-KFPR(ISUB,2)
+ ELSE
+ MINT(20+JS)=-KFPR(ISUB,1)
+ MINT(23-JS)=KFPR(ISUB,2)
+ ENDIF
+
+ ELSEIF(ISUB.EQ.210) THEN
+C...q + qbar' -> ~l_L + ~nulbar; th arbitrary
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ MINT(21)=-ISIGN(KFPR(ISUB,1),KCH1+KCH2)
+ MINT(22)=ISIGN(KFPR(ISUB,2),KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.211) THEN
+C...q + qbar'-> ~tau_1 + ~nutaubar; th arbitrary
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ MINT(21)=-ISIGN(KSUSY1+15,KCH1+KCH2)
+ MINT(22)=ISIGN(KSUSY1+16,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.212) THEN
+C...q + qbar'-> ~tau_2 + ~nutaubar; th arbitrary
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ MINT(21)=-ISIGN(KSUSY2+15,KCH1+KCH2)
+ MINT(22)=ISIGN(KSUSY1+16,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.213) THEN
+C...f + fbar -> ~nul + ~nulbar
+ MINT(21)=ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.214) THEN
+C...f + fbar -> ~nutau + ~nutaubar
+ MINT(21)=ISIGN(KSUSY1+16,KCS)
+ MINT(22)=-MINT(21)
+ ENDIF
+
+ ELSEIF(ISUB.LE.225) THEN
+ IF(ISUB.EQ.216) THEN
+C...f + fbar -> ~chi01 + ~chi01
+ MINT(21)=KSUSY1+22
+ MINT(22)=KSUSY1+22
+
+ ELSEIF(ISUB.EQ.217) THEN
+C...f + fbar -> ~chi02 + ~chi02
+ MINT(21)=KSUSY1+23
+ MINT(22)=KSUSY1+23
+
+ ELSEIF(ISUB.EQ.218 ) THEN
+C...f + fbar -> ~chi03 + ~chi03
+ MINT(21)=KSUSY1+25
+ MINT(22)=KSUSY1+25
+
+ ELSEIF(ISUB.EQ.219 ) THEN
+C...f + fbar -> ~chi04 + ~chi04
+ MINT(21)=KSUSY1+35
+ MINT(22)=KSUSY1+35
+
+ ELSEIF(ISUB.EQ.220 ) THEN
+C...f + fbar -> ~chi01 + ~chi02
+ IF(MINT(15).LT.0) JS=2
+C IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+22
+ MINT(23-JS)=KSUSY1+23
+
+ ELSEIF(ISUB.EQ.221 ) THEN
+C...f + fbar -> ~chi01 + ~chi03
+ IF(MINT(15).LT.0) JS=2
+C IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+22
+ MINT(23-JS)=KSUSY1+25
+
+ ELSEIF(ISUB.EQ.222) THEN
+C...f + fbar -> ~chi01 + ~chi04
+ IF(MINT(15).LT.0) JS=2
+C IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+22
+ MINT(23-JS)=KSUSY1+35
+
+ ELSEIF(ISUB.EQ.223) THEN
+C...f + fbar -> ~chi02 + ~chi03
+ IF(MINT(15).LT.0) JS=2
+C IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+23
+ MINT(23-JS)=KSUSY1+25
+
+ ELSEIF(ISUB.EQ.224) THEN
+C...f + fbar -> ~chi02 + ~chi04
+ IF(MINT(15).LT.0) JS=2
+C IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+23
+ MINT(23-JS)=KSUSY1+35
+
+ ELSEIF(ISUB.EQ.225) THEN
+C...f + fbar -> ~chi03 + ~chi04
+ IF(MINT(15).LT.0) JS=2
+C IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+25
+ MINT(23-JS)=KSUSY1+35
+ ENDIF
+
+ ELSEIF(ISUB.LE.236) THEN
+ IF(ISUB.EQ.226) THEN
+C...f + fbar -> ~chi+-1 + ~chi-+1
+C...th=(p(q)-p(chi+))**2 or (p(qbar)-p(chi-))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ MINT(21)=ISIGN(KSUSY1+24,KCH1)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.227) THEN
+C...f + fbar -> ~chi+-2 + ~chi-+2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ MINT(21)=ISIGN(KSUSY1+37,KCH1)
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.228) THEN
+C...f + fbar -> ~chi+-1 + ~chi-+2
+C...th=(p(q)-p(chi1+))**2 or th=(p(qbar)-p(chi1-))**2
+C...js=1 if pyr<.5, js=2 if pyr>.5
+C...if 15=q, 16=qbar and js=1, chi1+ + chi2-, th=(q-chi1+)**2
+C...if 15=qbar, 16=q and js=1, chi2- + chi1+, th=(q-chi1+)**2
+C...if 15=q, 16=qbar and js=2, chi1- + chi2+, th=(qbar-chi1-)**2
+C...if 15=qbar, 16=q and js=2, chi2+ + chi1-, th=(q-chi1-)**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=INT(1-KCH1)/2
+ IF(MINT(2).EQ.1) THEN
+ MINT(21)= ISIGN(KSUSY1+24,KCH1)
+ MINT(22)= -ISIGN(KSUSY1+37,KCH1)
+c IF(KCH2.EQ.0) JS=2
+ ELSE
+ MINT(21)= ISIGN(KSUSY1+37,KCH1)
+ MINT(22)= -ISIGN(KSUSY1+24,KCH1)
+ JS=2
+c IF(KCH2.EQ.1) JS=2
+ ENDIF
+
+ ELSEIF(ISUB.EQ.229) THEN
+C...q + qbar' -> ~chi01 + ~chi+-1
+C...th=(p(u)-p(chi+))**2 or (p(ubar)-p(chi-))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+C...CHECK THIS
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+22
+ MINT(23-JS)=ISIGN(KSUSY1+24,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.230) THEN
+C...q + qbar' -> ~chi02 + ~chi+-1
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+23
+ MINT(23-JS)=ISIGN(KSUSY1+24,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.231) THEN
+C...q + qbar' -> ~chi03 + ~chi+-1
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+25
+ MINT(23-JS)=ISIGN(KSUSY1+24,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.232) THEN
+C...q + qbar' -> ~chi04 + ~chi+-1
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+35
+ MINT(23-JS)=ISIGN(KSUSY1+24,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.233) THEN
+C...q + qbar' -> ~chi01 + ~chi+-2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+22
+ MINT(23-JS)=ISIGN(KSUSY1+37,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.234) THEN
+C...q + qbar' -> ~chi02 + ~chi+-2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+23
+ MINT(23-JS)=ISIGN(KSUSY1+37,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.235) THEN
+C...q + qbar' -> ~chi03 + ~chi+-2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+25
+ MINT(23-JS)=ISIGN(KSUSY1+37,KCH1+KCH2)
+
+ ELSEIF(ISUB.EQ.236) THEN
+C...q + qbar' -> ~chi04 + ~chi+-2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MOD(MINT(15),2).EQ.0) JS=2
+ MINT(20+JS)=KSUSY1+35
+ MINT(23-JS)=ISIGN(KSUSY1+37,KCH1+KCH2)
+ ENDIF
+
+ ELSEIF(ISUB.LE.245) THEN
+ IF(ISUB.EQ.237) THEN
+C...q + qbar -> ~chi01 + ~g
+C...th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+21
+ MINT(23-JS)=KSUSY1+22
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.238) THEN
+C...q + qbar -> ~chi02 + ~g
+C...th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+21
+ MINT(23-JS)=KSUSY1+23
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.239) THEN
+C...q + qbar -> ~chi03 + ~g
+C...th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+21
+ MINT(23-JS)=KSUSY1+25
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.240) THEN
+C...q + qbar -> ~chi04 + ~g
+C...th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KSUSY1+21
+ MINT(23-JS)=KSUSY1+35
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.241) THEN
+C...q + qbar' -> ~chi+-1 + ~g
+C...if 15=u, 16=dbar, then (kch1+kch2)>0, js=1, chi+
+C...if 15=d, 16=ubar, then (kch1+kch2)<0, js=2, chi-
+C...if 15=ubar, 16=d, then (kch1+kch2)<0, js=1, chi-
+C...if 15=dbar, 16=u, then (kch1+kch2)>0, js=2, chi+
+C...th=(p(q)-p(chi+))**2 or (p(qbar')-p(chi-))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ JS=1
+ IF(MINT(15)*(KCH1+KCH2).GT.0) JS=2
+ MINT(20+JS)=KSUSY1+21
+ MINT(23-JS)=ISIGN(KSUSY1+24,KCH1+KCH2)
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.242) THEN
+C...q + qbar' -> ~chi+-2 + ~g
+C...if 15=u, 16=dbar, then (kch1+kch2)>0, js=1, chi+
+C...if 15=d, 16=ubar, then (kch1+kch2)<0, js=2, chi-
+C...if 15=ubar, 16=d, then (kch1+kch2)<0, js=1, chi-
+C...if 15=dbar, 16=u, then (kch1+kch2)>0, js=2, chi+
+C...th=(p(q)-p(chi+))**2 or (p(qbar')-p(chi-))**2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ JS=1
+ IF(MINT(15)*(KCH1+KCH2).GT.0) JS=2
+ MINT(20+JS)=KSUSY1+21
+ MINT(23-JS)=ISIGN(KSUSY1+37,KCH1+KCH2)
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.243) THEN
+C...q + qbar -> ~g + ~g ; th arbitrary
+ MINT(21)=KSUSY1+21
+ MINT(22)=KSUSY1+21
+ KCC=MINT(2)+4
+
+ ELSEIF(ISUB.EQ.244) THEN
+C...g + g -> ~g + ~g ; th arbitrary
+ KCC=MINT(2)+12
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=KSUSY1+21
+ MINT(22)=KSUSY1+21
+ ENDIF
+
+ ELSEIF(ISUB.LE.260) THEN
+ IF(ISUB.EQ.246) THEN
+C...qj + g -> ~qj_L + ~chi01
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY1+IA,I)
+ MINT(23-JS)=KSUSY1+22
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.247) THEN
+C...qj + g -> ~qj_R + ~chi01
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY2+IA,I)
+ MINT(23-JS)=KSUSY1+22
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.248) THEN
+C...qj + g -> ~qj_L + ~chi02
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY1+IA,I)
+ MINT(23-JS)=KSUSY1+23
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.249) THEN
+C...qj + g -> ~qj_R + ~chi02
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY2+IA,I)
+ MINT(23-JS)=KSUSY1+23
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.250) THEN
+C...qj + g -> ~qj_L + ~chi03
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY1+IA,I)
+ MINT(23-JS)=KSUSY1+25
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.251) THEN
+C...qj + g -> ~qj_R + ~chi03
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY2+IA,I)
+ MINT(23-JS)=KSUSY1+25
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.252) THEN
+C...qj + g -> ~qj_L + ~chi04
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY1+IA,I)
+ MINT(23-JS)=KSUSY1+35
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.253) THEN
+C...qj + g -> ~qj_R + ~chi04
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY2+IA,I)
+ MINT(23-JS)=KSUSY1+35
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.254) THEN
+C...qj + g -> ~qk_L + ~chi+-1
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(23-JS)=ISIGN(KSUSY1+24,KCHG(IA,1)*I)
+ IB=-IA+INT((IA+1)/2)*4-1
+ MINT(20+JS)=ISIGN(KSUSY1+IB,I)
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.255) THEN
+C...qj + g -> ~qk_L + ~chi+-1
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(23-JS)=ISIGN(KSUSY1+24,KCHG(IA,1)*I)
+ IB=-IA+INT((IA+1)/2)*4-1
+ MINT(20+JS)=ISIGN(KSUSY2+IB,I)
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.256) THEN
+C...qj + g -> ~qk_L + ~chi+-2
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ IB=-IA+INT((IA+1)/2)*4-1
+ MINT(20+JS)=ISIGN(KSUSY1+IB,I)
+ MINT(23-JS)=ISIGN(KSUSY1+37,KCHG(IA,1)*I)
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.257) THEN
+C...qj + g -> ~qk_R + ~chi+-2
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ IB=-IA+INT((IA+1)/2)*4-1
+ MINT(20+JS)=ISIGN(KSUSY2+IB,I)
+ MINT(23-JS)=ISIGN(KSUSY1+37,KCHG(IA,1)*I)
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.258) THEN
+C...qj + g -> ~qj_L + ~g
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY1+IA,I)
+ MINT(23-JS)=KSUSY1+21
+ KCC=MINT(2)+6
+ IF(JS.EQ.2) KCC=KCC+2
+ KCS=ISIGN(1,I)
+
+ ELSEIF(ISUB.EQ.259) THEN
+C...qj + g -> ~qj_R + ~g
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY2+IA,I)
+ MINT(23-JS)=KSUSY1+21
+ KCC=MINT(2)+6
+ IF(JS.EQ.2) KCC=KCC+2
+ KCS=ISIGN(1,I)
+ ENDIF
+
+ ELSEIF(ISUB.LE.270) THEN
+ IF(ISUB.EQ.261) THEN
+C...f + fbar -> ~t_1 + ~t_1bar; th = (p(q)-p(sq))**2
+ ISGN=1
+ IF(MINT(43).EQ.1.AND.PYR(0).GT.0.5D0) ISGN=-1
+ MINT(21)=ISGN*ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+C...Correct color combination
+ IF(MINT(43).EQ.4) KCC=4
+
+ ELSEIF(ISUB.EQ.262) THEN
+C...f + fbar -> ~t_2 + ~t_2bar; th = (p(q)-p(sq))**2
+ ISGN=1
+ IF(MINT(43).EQ.1.AND.PYR(0).GT.0.5D0) ISGN=-1
+ MINT(21)=ISGN*ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+C...Correct color combination
+ IF(MINT(43).EQ.4) KCC=4
+
+ ELSEIF(ISUB.EQ.263) THEN
+C...f + fbar -> ~t_1 + ~t_2bar; th = (p(q)-p(sq))**2
+ IF((KCS.GT.0.AND.MINT(2).EQ.1).OR.
+ & (KCS.LT.0.AND.MINT(2).EQ.2)) THEN
+ MINT(21)=ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-ISIGN(KFPR(ISUB,2),KCS)
+ ELSE
+ JS=2
+ MINT(21)=ISIGN(KFPR(ISUB,2),KCS)
+ MINT(22)=-ISIGN(KFPR(ISUB,1),KCS)
+ ENDIF
+C...Correct color combination
+ IF(MINT(43).EQ.4) KCC=4
+
+ ELSEIF(ISUB.EQ.264) THEN
+C...g + g -> ~t_1 + ~t_1bar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.265) THEN
+C...g + g -> ~t_2 + ~t_2bar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+ ENDIF
+
+ ELSEIF(ISUB.LE.296) THEN
+ IF(ISUB.EQ.271.OR.ISUB.EQ.281.OR.ISUB.EQ.291) THEN
+C...qi + qj -> ~qi_L + ~qj_L
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+ MINT(21)=ISIGN(KSUSY1+IABS(MINT(15)),MINT(15))
+ MINT(22)=ISIGN(KSUSY1+IABS(MINT(16)),MINT(16))
+
+ ELSEIF(ISUB.EQ.272.OR.ISUB.EQ.282.OR.ISUB.EQ.292) THEN
+C...qi + qj -> ~qi_R + ~qj_R
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+ MINT(21)=ISIGN(KSUSY2+IABS(MINT(15)),MINT(15))
+ MINT(22)=ISIGN(KSUSY2+IABS(MINT(16)),MINT(16))
+
+ ELSEIF(ISUB.EQ.273.OR.ISUB.EQ.283.OR.ISUB.EQ.293) THEN
+C...qi + qj -> ~qi_L + ~qj_R
+ MINT(21)=ISIGN(KFPR(ISUB,1),MINT(15))
+ MINT(22)=ISIGN(KFPR(ISUB,2),MINT(16))
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+
+ ELSEIF(ISUB.EQ.274.OR.ISUB.EQ.284) THEN
+C...qi + qjbar -> ~qi_L + ~qj_Lbar; th = (p(f)-p(sf'))**2
+ MINT(21)=ISIGN(KSUSY1+IABS(MINT(15)),MINT(15))
+ MINT(22)=ISIGN(KSUSY1+IABS(MINT(16)),MINT(16))
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+
+ ELSEIF(ISUB.EQ.275.OR.ISUB.EQ.285) THEN
+C...qi + qjbar -> ~qi_R + ~qj_Rbar ; th = (p(f)-p(sf'))**2
+ MINT(21)=ISIGN(KSUSY2+IABS(MINT(15)),MINT(15))
+ MINT(22)=ISIGN(KSUSY2+IABS(MINT(16)),MINT(16))
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+
+ ELSEIF(ISUB.EQ.276.OR.ISUB.EQ.286.OR.ISUB.EQ.296) THEN
+C...qi + qjbar -> ~qi_L + ~qj_Rbar ; th = (p(f)-p(sf'))**2
+ MINT(21)=ISIGN(KFPR(ISUB,1),MINT(15))
+ MINT(22)=ISIGN(KFPR(ISUB,2),MINT(16))
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+
+ ELSEIF(ISUB.EQ.277.OR.ISUB.EQ.287) THEN
+C...f + fbar -> ~qi_L + ~qi_Lbar ; th = (p(q)-p(sq))**2
+ ISGN=1
+ IF(MINT(43).EQ.1.AND.PYR(0).GT.0.5D0) ISGN=-1
+ MINT(21)=ISGN*ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+ IF(MINT(43).EQ.4) KCC=4
+
+ ELSEIF(ISUB.EQ.278.OR.ISUB.EQ.288) THEN
+C...f + fbar -> ~qi_R + ~qi_Rbar; th = (p(q)-p(sq))**2
+ ISGN=1
+ IF(MINT(43).EQ.1.AND.PYR(0).GT.0.5D0) ISGN=-1
+ MINT(21)=ISGN*ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+ IF(MINT(43).EQ.4) KCC=4
+
+ ELSEIF(ISUB.EQ.279.OR.ISUB.EQ.289) THEN
+C...g + g -> ~qi_L + ~qi_Lbar ; th arbitrary
+C...pure LL + RR
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.280.OR.ISUB.EQ.290) THEN
+C...g + g -> ~qi_R + ~qi_Rbar ; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.294) THEN
+C...qj + g -> ~qj_L + ~g
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY1+IA,I)
+ MINT(23-JS)=KSUSY1+21
+ KCC=MINT(2)+6
+ IF(JS.EQ.2) KCC=KCC+2
+ KCS=ISIGN(1,I)
+
+ ELSEIF(ISUB.EQ.295) THEN
+C...qj + g -> ~qj_R + ~g
+ IF(MINT(15).EQ.21) JS=2
+ I=MINT(14+JS)
+ IA=IABS(I)
+ MINT(20+JS)=ISIGN(KSUSY2+IA,I)
+ MINT(23-JS)=KSUSY1+21
+ KCC=MINT(2)+6
+ IF(JS.EQ.2) KCC=KCC+2
+ KCS=ISIGN(1,I)
+ ENDIF
+
+ ELSEIF(ISUB.LE.340) THEN
+
+ IF(ISUB.EQ.297.OR.ISUB.EQ.298) THEN
+C...q + qbar' -> H+ + H0
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MINT(15)*(KCH1+KCH2).GT.0) JS=2
+ MINT(20+JS)=ISIGN(37,KCH1+KCH2)
+ MINT(23-JS)=KFPR(ISUB,2)
+ ELSEIF(ISUB.EQ.299.OR.ISUB.EQ.300) THEN
+C...f + fbar -> A0 + H0; th arbitrary
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KFPR(ISUB,1)
+ MINT(23-JS)=KFPR(ISUB,2)
+ ELSEIF(ISUB.EQ.301) THEN
+C...f + fbar -> H+ H-
+ MINT(21)=ISIGN(KFPR(ISUB,1),KCS)
+ MINT(22)=-MINT(21)
+ ENDIF
+CMRENNA--
+
+ ELSEIF(ISUB.LE.360) THEN
+
+ IF(ISUB.EQ.341.OR.ISUB.EQ.342) THEN
+C...l + l -> H_L++/--, H_R++/--
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ KFRES=ISIGN(KFPR(ISUB,1),KCH1+KCH2)
+
+ ELSEIF(ISUB.GE.343.AND.ISUB.LE.348) THEN
+C...l + gamma -> l' + H++/--; th=(p(l)-p(H))**2
+ IF(MINT(15).EQ.22) JS=2
+ MINT(20+JS)=ISIGN(KFPR(ISUB,1),-MINT(14+JS))
+ MINT(23-JS)=ISIGN(KFPR(ISUB,2),-MINT(14+JS))
+ KCC=22
+
+ ELSEIF(ISUB.EQ.349.OR.ISUB.EQ.350) THEN
+C...f + fbar -> H++ + H--; th = (p(f)-p(H--))**2
+ MINT(21)=-ISIGN(KFPR(ISUB,1),MINT(15))
+ MINT(22)=-MINT(21)
+
+ ELSEIF(ISUB.EQ.351.OR.ISUB.EQ.352) THEN
+C...f + f' -> f" + f"' + H++/-- (W+/- + W+/- -> H++/--
+C...as inner process).
+ DO 450 JT=1,2
+ I=MINT(14+JT)
+ IA=IABS(I)
+ IF(IA.LE.10) THEN
+ RVCKM=VINT(180+I)*PYR(0)
+ DO 440 J=1,MSTP(1)
+ IB=2*J-1+MOD(IA,2)
+ IPM=(5-ISIGN(1,I))/2
+ IDC=J+MDCY(IA,2)+2
+ IF(MDME(IDC,1).NE.1.AND.MDME(IDC,1).NE.IPM) GOTO 440
+ MINT(20+JT)=ISIGN(IB,I)
+ RVCKM=RVCKM-VCKM((IA+1)/2,(IB+1)/2)
+ IF(RVCKM.LE.0D0) GOTO 450
+ 440 CONTINUE
+ ELSE
+ IB=2*((IA+1)/2)-1+MOD(IA,2)
+ MINT(20+JT)=ISIGN(IB,I)
+ ENDIF
+ 450 CONTINUE
+ KCC=22
+ KFRES=ISIGN(KFPR(ISUB,1),MINT(15))
+ IF(MOD(MINT(15),2).EQ.1) KFRES=-KFRES
+
+ ELSEIF(ISUB.EQ.353) THEN
+C...f + fbar -> Z_R0
+ KFRES=KFPR(ISUB,1)
+
+ ELSEIF(ISUB.EQ.354) THEN
+C...f + fbar' -> W+/-
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ KFRES=ISIGN(KFPR(ISUB,1),KCH1+KCH2)
+
+ ENDIF
+
+ ELSEIF(ISUB.LE.380) THEN
+
+ IF(ISUB.LE.363.OR.ISUB.EQ.368) THEN
+C...f + fbar -> charged+ charged- technicolor
+ KSW=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFPR(ISUB,1),KSW)
+ MINT(22)=-ISIGN(KFPR(ISUB,2),KSW)
+
+ ELSEIF(ISUB.LE.367.OR.ISUB.EQ.379.OR.ISUB.EQ.380) THEN
+C...f + fbar -> neutral neutral technicolor
+ MINT(21)=KFPR(ISUB,1)
+ MINT(22)=KFPR(ISUB,2)
+
+ ELSEIF(ISUB.EQ.374.OR.ISUB.EQ.375.OR.ISUB.EQ.378) THEN
+C...f + fbar' -> neutral charged technicolor
+ IN=1
+ IC=2
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MINT(15)*(KCH1+KCH2).LT.0) JS=2
+ MINT(23-JS)=ISIGN(KFPR(ISUB,IC),KCH1+KCH2)
+ MINT(20+JS)=KFPR(ISUB,IN)
+
+ ELSEIF(ISUB.GE.370.AND.ISUB.LE.377) THEN
+C...f + fbar' -> charged neutral technicolor
+ IN=2
+ IC=1
+ KCH1=KCHG(IABS(MINT(15)),1)*ISIGN(1,MINT(15))
+ KCH2=KCHG(IABS(MINT(16)),1)*ISIGN(1,MINT(16))
+ IF(MINT(15)*(KCH1+KCH2).GT.0) JS=2
+ MINT(20+JS)=ISIGN(KFPR(ISUB,IC),KCH1+KCH2)
+ MINT(23-JS)=KFPR(ISUB,IN)
+ ENDIF
+
+ ELSEIF(ISUB.LE.400) THEN
+ IF(ISUB.EQ.381) THEN
+C...f + f' -> f + f' (g exchange); th = (p(f)-p(f))**2, TC extensions
+ KCC=MINT(2)
+ IF(MINT(15)*MINT(16).LT.0) KCC=KCC+2
+
+ ELSEIF(ISUB.EQ.382) THEN
+C...f + fbar -> f' + fbar'; th = (p(f)-p(f'))**2, TC extensions
+ MINT(21)=ISIGN(KFLF,MINT(15))
+ MINT(22)=-MINT(21)
+ KCC=4
+
+ ELSEIF(ISUB.EQ.383) THEN
+C...f + fbar -> g + g; th arbitrary, TC extensions
+ MINT(21)=21
+ MINT(22)=21
+ KCC=MINT(2)+4
+
+ ELSEIF(ISUB.EQ.384) THEN
+C...f + g -> f + g; th = (p(f)-p(f))**2, TC extensions
+ IF(MINT(15).EQ.21) JS=2
+ KCC=MINT(2)+6
+ IF(MINT(15).EQ.21) KCC=KCC+2
+ IF(MINT(15).NE.21) KCS=ISIGN(1,MINT(15))
+ IF(MINT(16).NE.21) KCS=ISIGN(1,MINT(16))
+
+ ELSEIF(ISUB.EQ.385) THEN
+C...g + g -> f + fbar; th arbitrary, TC extensions
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFLF,KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.386) THEN
+C...g + g -> g + g; th arbitrary, TC extensions
+ KCC=MINT(2)+12
+ KCS=(-1)**INT(1.5D0+PYR(0))
+
+ ELSEIF(ISUB.EQ.387) THEN
+C...q + qbar -> Q + Qbar; th = (p(q)-p(Q))**2, TC extensions
+ MINT(21)=ISIGN(MINT(55),MINT(15))
+ MINT(22)=-MINT(21)
+ KCC=4
+
+ ELSEIF(ISUB.EQ.388) THEN
+C...g + g -> Q + Qbar; th arbitrary, TC extensions
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(MINT(55),KCS)
+ MINT(22)=-MINT(21)
+ KCC=MINT(2)+10
+
+ ELSEIF(ISUB.EQ.391) THEN
+C...f + fbar -> G*.
+ KFRES=KFPR(ISUB,1)
+
+ ELSEIF(ISUB.EQ.392) THEN
+C...g + g -> G*.
+ KCC=21
+ KFRES=KFPR(ISUB,1)
+
+ ELSEIF(ISUB.EQ.393) THEN
+C...q + qbar -> g + G*; th arbitrary.
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(20+JS)=KFPR(ISUB,1)
+ MINT(23-JS)=KFPR(ISUB,2)
+ KCC=17+JS
+
+ ELSEIF(ISUB.EQ.394) THEN
+C...q + g -> q + G*; th = (p(f) - p(f))**2
+ IF(MINT(15).EQ.21) JS=2
+ MINT(23-JS)=KFPR(ISUB,2)
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.EQ.395) THEN
+C...g + g -> G* + g; th arbitrary.
+ IF(PYR(0).GT.0.5D0) JS=2
+ MINT(23-JS)=KFPR(ISUB,2)
+ KCC=22+JS
+ ENDIF
+
+ ELSEIF(ISUB.LE.420) THEN
+ IF(ISUB.EQ.401) THEN
+C...g + g -> t + b + H+/-
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(KFPR(ISUBSV,2),KCS)
+ MINT(22)=ISIGN(5,-KCS)
+ KCC=11+INT(0.5D0+PYR(0))
+ KFRES=ISIGN(KFHIGG,-KCS)
+
+ ELSEIF(ISUB.EQ.402) THEN
+C...q + qbar -> t + b + H+/-
+ KFL=(-1)**INT(1.5D0+PYR(0))
+ MINT(21)=ISIGN(INT(6.+.5*KFL),KCS)
+ MINT(22)=ISIGN(INT(6.-.5*KFL),-KCS)
+ KCC=4
+ KFRES=ISIGN(KFHIGG,-KFL*KCS)
+ ENDIF
+
+C...QUARKONIA+++
+C...Additional code by Stefan Wolf
+ ELSEIF(ISUB.LE.430) THEN
+ IF(ISUB.GE.421.AND.ISUB.LE.424) THEN
+C...g + g -> QQ~[n] + g
+C...MINT(21), MINT(22) copied from ISUB.EQ.86-89
+C...[g + g -> (J/Psi, chi_0c, chi_1c or chi_2c) + g]
+C...KCC and KCS copied from ISUB.EQ.86-89 (for ISUB.EQ.421)
+C...[g + g -> (J/Psi, chi_0c, chi_1c or chi_2c) + g]
+C...or from ISUB.EQ.68 (for ISUB.NE.421)
+C...[g + g -> g + g; th arbitrary]
+ MINT(21)=KFPR(ISUBSV,1)
+ MINT(22)=KFPR(ISUBSV,2)
+ IF(ISUB.EQ.421) THEN
+ KCC=24
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ ELSE
+ KCC=MINT(2)+12
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ ENDIF
+
+ ELSEIF(ISUB.GE.425.AND.ISUB.LE.427) THEN
+C...q + g -> q + QQ~[n]
+C...MINT(21), MINT(22) "copied" from ISUB.EQ.112
+C...[f + g -> f + h0; th = (p(f)-p(f))**2; (q + g -> q + h0 only)]
+C...KCC copied from ISUB.EQ.28
+C...[f + g -> f + g; th = (p(f)-p(f))**2; (q + g -> q + g only)]
+ IF(MINT(15).EQ.21) JS=2
+ MINT(23-JS)=KFPR(ISUBSV,2)
+ KCC=MINT(2)+6
+ IF(MINT(15).EQ.21) KCC=KCC+2
+ IF(MINT(15).NE.21) KCS=ISIGN(1,MINT(15))
+ IF(MINT(16).NE.21) KCS=ISIGN(1,MINT(16))
+
+ ELSEIF(ISUB.GE.428.AND.ISUB.LE.430) THEN
+C...q + q~ -> g + QQ~[n]
+C...MINT(21), MINT(22) "copied" from ISUB.EQ.111
+C...[f + fbar -> g + h0; th arbitrary; (q + qbar -> g + h0 only)]
+C...KCC copied from ISUB.EQ.13
+C...[f + fbar -> g + g; th arbitrary; (q + qbar -> g + g only)]
+ IF(PYR(0).GT.0.5) JS=2
+ MINT(20+JS)=21
+ MINT(23-JS)=KFPR(ISUBSV,2)
+ KCC=MINT(2)+4
+ ENDIF
+
+ ELSEIF(ISUB.LE.440) THEN
+ IF(ISUB.GE.431.AND.ISUB.LE.433) THEN
+C...g + g -> QQ~[n] + g
+C...MINT(21), MINT(22) copied from ISUB.EQ.86-89
+C...[g + g -> (J/Psi, chi_0c, chi_1c or chi_2c) + g]
+C...KCC and KCS copied from ISUB.EQ.86-89
+C...[g + g -> (J/Psi, chi_0c, chi_1c or chi_2c) + g]
+ MINT(21)=KFPR(ISUBSV,1)
+ MINT(22)=KFPR(ISUBSV,2)
+ KCC=24
+ KCS=(-1)**INT(1.5D0+PYR(0))
+
+ ELSEIF(ISUB.GE.434.AND.ISUB.LE.436) THEN
+C...q + g -> q + QQ~[n]
+C...MINT(21), MINT(22) "copied" from ISUB.EQ.112
+C...[f + g -> f + h0; th = (p(f)-p(f))**2; (q + g -> q + h0 only)]
+C...KCC and KCS copied from ISUB.EQ.112
+C...[f + g -> f + h0; th = (p(f)-p(f))**2; (q + g -> q + h0 only)]
+ IF(MINT(15).EQ.21) JS=2
+ MINT(23-JS)=KFPR(ISUBSV,2)
+ KCC=15+JS
+ KCS=ISIGN(1,MINT(14+JS))
+
+ ELSEIF(ISUB.GE.437.AND.ISUB.LE.439) THEN
+C...q + q~ -> g + QQ~[n]
+C...MINT(21), MINT(22) "copied" from ISUB.EQ.111
+C...[f + fbar -> g + h0; th arbitrary; (q + qbar -> g + h0 only)]
+C...KCC copied from ISUB.EQ.111
+C...[f + fbar -> g + h0; th arbitrary; (q + qbar -> g + h0 only)]
+ IF(PYR(0).GT.0.5) JS=2
+ MINT(20+JS)=21
+ MINT(23-JS)=KFPR(ISUBSV,2)
+ KCC=17+JS
+ ENDIF
+C...QUARKONIA---
+
+ ENDIF
+
+ IF(ISET(ISUB).EQ.11) THEN
+C...Store documentation for user-defined processes
+ BEZUP=(PUP(3,1)+PUP(3,2))/(PUP(4,1)+PUP(4,2))
+ KUPPO(1)=MINT(83)+5
+ KUPPO(2)=MINT(83)+6
+ I=MINT(83)+6
+ DO 470 IUP=3,NUP
+ KUPPO(IUP)=0
+ IF(MSTP(128).GE.2.AND.MOTHUP(1,IUP).GE.3) THEN
+ IDOC=IDOC-1
+ MINT(4)=MINT(4)-1
+ GOTO 470
+ ENDIF
+ I=I+1
+ KUPPO(IUP)=I
+ K(I,1)=21
+ K(I,2)=IDUP(IUP)
+ IF(IDUP(IUP).EQ.0) K(I,2)=90
+ K(I,3)=0
+ IF(MOTHUP(1,IUP).GE.3) K(I,3)=KUPPO(MOTHUP(1,IUP))
+ K(I,4)=0
+ K(I,5)=0
+ DO 460 J=1,5
+ P(I,J)=PUP(J,IUP)
+ 460 CONTINUE
+ V(I,5)=VTIMUP(IUP)
+ 470 CONTINUE
+ CALL PYROBO(MINT(83)+7,MINT(83)+4+NUP,0D0,VINT(24),0D0,0D0,
+ & -BEZUP)
+
+C...Store final state partons for user-defined processes
+ N=IPU2
+ DO 490 IUP=3,NUP
+ N=N+1
+ K(N,1)=1
+ IF(ISTUP(IUP).EQ.2.OR.ISTUP(IUP).EQ.3) K(N,1)=11
+ K(N,2)=IDUP(IUP)
+ IF(IDUP(IUP).EQ.0) K(N,2)=90
+ IF(MSTP(128).LE.0.OR.MOTHUP(1,IUP).EQ.0) THEN
+ K(N,3)=KUPPO(IUP)
+ ELSE
+ K(N,3)=MINT(84)+MOTHUP(1,IUP)
+ ENDIF
+ K(N,4)=0
+ K(N,5)=0
+C...Search for daughters of intermediate colourless particles.
+ IF(K(N,1).EQ.11.AND.KCHG(PYCOMP(K(N,2)),2).EQ.0) THEN
+ DO 475 IUPDAU=IUP+1,NUP
+ IF(MOTHUP(1,IUPDAU).EQ.IUP.AND.K(N,4).EQ.0) K(N,4)=
+ & N+IUPDAU-IUP
+ IF(MOTHUP(1,IUPDAU).EQ.IUP) K(N,5)=N+IUPDAU-IUP
+ 475 CONTINUE
+ ENDIF
+ DO 480 J=1,5
+ P(N,J)=PUP(J,IUP)
+ 480 CONTINUE
+ V(N,5)=VTIMUP(IUP)
+ 490 CONTINUE
+ CALL PYROBO(IPU3,N,0D0,VINT(24),0D0,0D0,-BEZUP)
+
+C...Arrange colour flow for user-defined processes
+ NLBL=0
+ DO 540 IUP1=1,NUP
+ I1=MINT(84)+IUP1
+ IF(KCHG(PYCOMP(K(I1,2)),2).EQ.0) GOTO 540
+ IF(K(I1,1).EQ.1) K(I1,1)=3
+ IF(K(I1,1).EQ.11) K(I1,1)=14
+C...Find a not yet considered colour/anticolour line.
+ DO 530 ISDE1=1,2
+ IF(ICOLUP(ISDE1,IUP1).EQ.0) GOTO 530
+ NMAT=0
+ DO 500 ILBL=1,NLBL
+ IF(ICOLUP(ISDE1,IUP1).EQ.ILAB(ILBL)) NMAT=1
+ 500 CONTINUE
+ IF(NMAT.EQ.0) THEN
+ NLBL=NLBL+1
+ ILAB(NLBL)=ICOLUP(ISDE1,IUP1)
+C...Find all others belonging to same line.
+ I3=I1
+ I4=0
+ DO 520 IUP2=IUP1+1,NUP
+ I2=MINT(84)+IUP2
+ DO 510 ISDE2=1,2
+ IF(ICOLUP(ISDE2,IUP2).EQ.ICOLUP(ISDE1,IUP1)) THEN
+ IF(ISDE2.EQ.ISDE1) THEN
+ K(I3,3+ISDE2)=K(I3,3+ISDE2)+I2
+ K(I2,3+ISDE2)=K(I2,3+ISDE2)+MSTU(5)*I3
+ I3=I2
+ ELSEIF(I4.NE.0) THEN
+ K(I4,3+ISDE2)=K(I4,3+ISDE2)+I2
+ K(I2,3+ISDE2)=K(I2,3+ISDE2)+MSTU(5)*I4
+ I4=I2
+ ELSEIF(IUP2.LE.2) THEN
+ K(I1,3+ISDE1)=K(I1,3+ISDE1)+I2
+ K(I2,3+ISDE2)=K(I2,3+ISDE2)+I1
+ I4=I2
+ ELSE
+ K(I1,3+ISDE1)=K(I1,3+ISDE1)+MSTU(5)*I2
+ K(I2,3+ISDE2)=K(I2,3+ISDE2)+MSTU(5)*I1
+ I4=I2
+ ENDIF
+ ENDIF
+ 510 CONTINUE
+ 520 CONTINUE
+ ENDIF
+ 530 CONTINUE
+ 540 CONTINUE
+
+ ELSEIF(IDOC.EQ.7) THEN
+C...Resonance not decaying; store kinematics
+ I=MINT(83)+7
+ K(IPU3,1)=1
+ K(IPU3,2)=KFRES
+ K(IPU3,3)=I
+ P(IPU3,4)=SHUSER
+ P(IPU3,5)=SHUSER
+ K(I,1)=21
+ K(I,2)=KFRES
+ P(I,4)=SHUSER
+ P(I,5)=SHUSER
+ N=IPU3
+ MINT(21)=KFRES
+ MINT(22)=0
+
+C...Special cases: colour flow in coloured resonances
+ KCRES=PYCOMP(KFRES)
+ IF(KCHG(KCRES,2).NE.0) THEN
+ K(IPU3,1)=3
+ DO 550 J=1,2
+ JC=J
+ IF(KCS.EQ.-1) JC=3-J
+ IF(ICOL(KCC,1,JC).NE.0.AND.K(IPU1,1).EQ.14) K(IPU1,J+3)=
+ & MINT(84)+ICOL(KCC,1,JC)
+ IF(ICOL(KCC,2,JC).NE.0.AND.K(IPU2,1).EQ.14) K(IPU2,J+3)=
+ & MINT(84)+ICOL(KCC,2,JC)
+ IF(ICOL(KCC,3,JC).NE.0.AND.K(IPU3,1).EQ.3) K(IPU3,J+3)=
+ & MSTU(5)*(MINT(84)+ICOL(KCC,3,JC))
+ 550 CONTINUE
+ ELSE
+ K(IPU1,4)=IPU2
+ K(IPU1,5)=IPU2
+ K(IPU2,4)=IPU1
+ K(IPU2,5)=IPU1
+ ENDIF
+
+ ELSEIF(IDOC.EQ.8) THEN
+C...2 -> 2 processes: store outgoing partons in their CM-frame
+ DO 560 JT=1,2
+ I=MINT(84)+2+JT
+ KCA=PYCOMP(MINT(20+JT))
+ K(I,1)=1
+ IF(KCHG(KCA,2).NE.0) K(I,1)=3
+ K(I,2)=MINT(20+JT)
+ K(I,3)=MINT(83)+IDOC+JT-2
+ KFAA=IABS(K(I,2))
+ IF(KFPR(ISUBSV,1+MOD(JS+JT,2)).NE.0) THEN
+ P(I,5)=SQRT(VINT(63+MOD(JS+JT,2)))
+ ELSE
+ P(I,5)=PYMASS(K(I,2))
+ ENDIF
+ IF((KFAA.EQ.6.OR.KFAA.EQ.7.OR.KFAA.EQ.8).AND.
+ & P(I,5).LT.PARP(42)) P(I,5)=PYMASS(K(I,2))
+ 560 CONTINUE
+ IF(P(IPU3,5)+P(IPU4,5).GE.SHR) THEN
+ KFA1=IABS(MINT(21))
+ KFA2=IABS(MINT(22))
+ IF((KFA1.GT.3.AND.KFA1.NE.21).OR.(KFA2.GT.3.AND.KFA2.NE.21))
+ & THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ P(IPU3,5)=0D0
+ P(IPU4,5)=0D0
+ ENDIF
+ P(IPU3,4)=0.5D0*(SHR+(P(IPU3,5)**2-P(IPU4,5)**2)/SHR)
+ P(IPU3,3)=SQRT(MAX(0D0,P(IPU3,4)**2-P(IPU3,5)**2))
+ P(IPU4,4)=SHR-P(IPU3,4)
+ P(IPU4,3)=-P(IPU3,3)
+ N=IPU4
+ MINT(7)=MINT(83)+7
+ MINT(8)=MINT(83)+8
+
+C...Rotate outgoing partons using cos(theta)=(th-uh)/lam(sh,sqm3,sqm4)
+ CALL PYROBO(IPU3,IPU4,ACOS(VINT(23)),VINT(24),0D0,0D0,0D0)
+
+ ELSEIF(IDOC.EQ.9) THEN
+C...2 -> 3 processes: store outgoing partons in their CM frame
+ DO 570 JT=1,2
+ I=MINT(84)+2+JT
+ KCA=PYCOMP(MINT(20+JT))
+ K(I,1)=1
+ IF(KCHG(KCA,2).NE.0) K(I,1)=3
+ K(I,2)=MINT(20+JT)
+ K(I,3)=MINT(83)+IDOC+JT-3
+ JTA=JT
+C...t and b in opposide order in event list as compared to
+C...matrix element?
+ IF(ISUB.EQ.402.AND.IABS(MINT(21)).EQ.5) JTA=3-JT
+ IF(IABS(K(I,2)).LE.22) THEN
+ P(I,5)=PYMASS(K(I,2))
+ ELSE
+ P(I,5)=SQRT(VINT(63+MOD(JS+JTA,2)))
+ ENDIF
+ PT=SQRT(MAX(0D0,VINT(197+5*JTA)-P(I,5)**2+VINT(196+5*JTA)**2))
+ P(I,1)=PT*COS(VINT(198+5*JTA))
+ P(I,2)=PT*SIN(VINT(198+5*JTA))
+ 570 CONTINUE
+ K(IPU5,1)=1
+ K(IPU5,2)=KFRES
+ K(IPU5,3)=MINT(83)+IDOC
+ P(IPU5,5)=SHR
+ P(IPU5,1)=-P(IPU3,1)-P(IPU4,1)
+ P(IPU5,2)=-P(IPU3,2)-P(IPU4,2)
+ PMS1=P(IPU3,5)**2+P(IPU3,1)**2+P(IPU3,2)**2
+ PMS2=P(IPU4,5)**2+P(IPU4,1)**2+P(IPU4,2)**2
+ PMS3=P(IPU5,5)**2+P(IPU5,1)**2+P(IPU5,2)**2
+ PMT3=SQRT(PMS3)
+ P(IPU5,3)=PMT3*SINH(VINT(211))
+ P(IPU5,4)=PMT3*COSH(VINT(211))
+ PMS12=(SHPR-P(IPU5,4))**2-P(IPU5,3)**2
+ SQL12=(PMS12-PMS1-PMS2)**2-4D0*PMS1*PMS2
+ IF(SQL12.LE.0D0) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ P(IPU3,3)=(-P(IPU5,3)*(PMS12+PMS1-PMS2)+
+ & VINT(213)*(SHPR-P(IPU5,4))*SQRT(SQL12))/(2D0*PMS12)
+ P(IPU4,3)=-P(IPU3,3)-P(IPU5,3)
+ IF(ISUB.EQ.402.AND.IABS(MINT(21)).EQ.5) THEN
+C...t and b in opposide order in event list as compared to
+C...matrix element
+ P(IPU4,3)=(-P(IPU5,3)*(PMS12+PMS2-PMS1)+
+ & VINT(213)*(SHPR-P(IPU5,4))*SQRT(SQL12))/(2D0*PMS12)
+ P(IPU3,3)=-P(IPU4,3)-P(IPU5,3)
+ END IF
+ P(IPU3,4)=SQRT(PMS1+P(IPU3,3)**2)
+ P(IPU4,4)=SQRT(PMS2+P(IPU4,3)**2)
+ MINT(23)=KFRES
+ N=IPU5
+ MINT(7)=MINT(83)+7
+ MINT(8)=MINT(83)+8
+
+ ELSEIF(IDOC.EQ.11) THEN
+C...Z0 + Z0 -> h0, W+ + W- -> h0: store Higgs and outgoing partons
+ PHI(1)=PARU(2)*PYR(0)
+ PHI(2)=PHI(1)-PHIR
+ DO 580 JT=1,2
+ I=MINT(84)+2+JT
+ K(I,1)=1
+ IF(KCHG(PYCOMP(MINT(20+JT)),2).NE.0) K(I,1)=3
+ K(I,2)=MINT(20+JT)
+ K(I,3)=MINT(83)+IDOC+JT-2
+ P(I,5)=PYMASS(K(I,2))
+ IF(0.5D0*SHPR*Z(JT).LE.P(I,5)) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ PABS=SQRT(MAX(0D0,(0.5D0*SHPR*Z(JT))**2-P(I,5)**2))
+ PTABS=PABS*SQRT(MAX(0D0,1D0-CTHE(JT)**2))
+ P(I,1)=PTABS*COS(PHI(JT))
+ P(I,2)=PTABS*SIN(PHI(JT))
+ P(I,3)=PABS*CTHE(JT)*(-1)**(JT+1)
+ P(I,4)=0.5D0*SHPR*Z(JT)
+ IZW=MINT(83)+6+JT
+ K(IZW,1)=21
+ K(IZW,2)=23
+ IF(ISUB.EQ.8) K(IZW,2)=ISIGN(24,PYCHGE(MINT(14+JT)))
+ K(IZW,3)=IZW-2
+ P(IZW,1)=-P(I,1)
+ P(IZW,2)=-P(I,2)
+ P(IZW,3)=(0.5D0*SHPR-PABS*CTHE(JT))*(-1)**(JT+1)
+ P(IZW,4)=0.5D0*SHPR*(1D0-Z(JT))
+ P(IZW,5)=-SQRT(MAX(0D0,P(IZW,3)**2+PTABS**2-P(IZW,4)**2))
+ 580 CONTINUE
+ I=MINT(83)+9
+ K(IPU5,1)=1
+ K(IPU5,2)=KFRES
+ K(IPU5,3)=I
+ P(IPU5,5)=SHR
+ P(IPU5,1)=-P(IPU3,1)-P(IPU4,1)
+ P(IPU5,2)=-P(IPU3,2)-P(IPU4,2)
+ P(IPU5,3)=-P(IPU3,3)-P(IPU4,3)
+ P(IPU5,4)=SHPR-P(IPU3,4)-P(IPU4,4)
+ K(I,1)=21
+ K(I,2)=KFRES
+ DO 590 J=1,5
+ P(I,J)=P(IPU5,J)
+ 590 CONTINUE
+ N=IPU5
+ MINT(23)=KFRES
+
+ ELSEIF(IDOC.EQ.12) THEN
+C...Z0 and W+/- scattering: store bosons and outgoing partons
+ PHI(1)=PARU(2)*PYR(0)
+ PHI(2)=PHI(1)-PHIR
+ JTRAN=INT(1.5D0+PYR(0))
+ DO 600 JT=1,2
+ I=MINT(84)+2+JT
+ K(I,1)=1
+ IF(KCHG(PYCOMP(MINT(20+JT)),2).NE.0) K(I,1)=3
+ K(I,2)=MINT(20+JT)
+ K(I,3)=MINT(83)+IDOC+JT-2
+ P(I,5)=PYMASS(K(I,2))
+ IF(0.5D0*SHPR*Z(JT).LE.P(I,5)) P(I,5)=0D0
+ PABS=SQRT(MAX(0D0,(0.5D0*SHPR*Z(JT))**2-P(I,5)**2))
+ PTABS=PABS*SQRT(MAX(0D0,1D0-CTHE(JT)**2))
+ P(I,1)=PTABS*COS(PHI(JT))
+ P(I,2)=PTABS*SIN(PHI(JT))
+ P(I,3)=PABS*CTHE(JT)*(-1)**(JT+1)
+ P(I,4)=0.5D0*SHPR*Z(JT)
+ IZW=MINT(83)+6+JT
+ K(IZW,1)=21
+ IF(MINT(14+JT).EQ.MINT(20+JT)) THEN
+ K(IZW,2)=23
+ ELSE
+ K(IZW,2)=ISIGN(24,PYCHGE(MINT(14+JT))-PYCHGE(MINT(20+JT)))
+ ENDIF
+ K(IZW,3)=IZW-2
+ P(IZW,1)=-P(I,1)
+ P(IZW,2)=-P(I,2)
+ P(IZW,3)=(0.5D0*SHPR-PABS*CTHE(JT))*(-1)**(JT+1)
+ P(IZW,4)=0.5D0*SHPR*(1D0-Z(JT))
+ P(IZW,5)=-SQRT(MAX(0D0,P(IZW,3)**2+PTABS**2-P(IZW,4)**2))
+ IPU=MINT(84)+4+JT
+ K(IPU,1)=3
+ K(IPU,2)=KFPR(ISUB,JT)
+ IF(ISUB.EQ.72.AND.JT.EQ.JTRAN) K(IPU,2)=-K(IPU,2)
+ IF(ISUB.EQ.73.OR.ISUB.EQ.77) K(IPU,2)=K(IZW,2)
+ K(IPU,3)=MINT(83)+8+JT
+ IF(IABS(K(IPU,2)).LE.10.OR.K(IPU,2).EQ.21) THEN
+ P(IPU,5)=PYMASS(K(IPU,2))
+ ELSE
+ P(IPU,5)=SQRT(VINT(63+MOD(JS+JT,2)))
+ ENDIF
+ MINT(22+JT)=K(IPU,2)
+ 600 CONTINUE
+C...Find rotation and boost for hard scattering subsystem
+ I1=MINT(83)+7
+ I2=MINT(83)+8
+ BEXCM=(P(I1,1)+P(I2,1))/(P(I1,4)+P(I2,4))
+ BEYCM=(P(I1,2)+P(I2,2))/(P(I1,4)+P(I2,4))
+ BEZCM=(P(I1,3)+P(I2,3))/(P(I1,4)+P(I2,4))
+ GAMCM=(P(I1,4)+P(I2,4))/SHR
+ BEPCM=BEXCM*P(I1,1)+BEYCM*P(I1,2)+BEZCM*P(I1,3)
+ PX=P(I1,1)+GAMCM*(GAMCM/(1D0+GAMCM)*BEPCM-P(I1,4))*BEXCM
+ PY=P(I1,2)+GAMCM*(GAMCM/(1D0+GAMCM)*BEPCM-P(I1,4))*BEYCM
+ PZ=P(I1,3)+GAMCM*(GAMCM/(1D0+GAMCM)*BEPCM-P(I1,4))*BEZCM
+ THECM=PYANGL(PZ,SQRT(PX**2+PY**2))
+ PHICM=PYANGL(PX,PY)
+C...Store hard scattering subsystem. Rotate and boost it
+ SQLAM=(SH-P(IPU5,5)**2-P(IPU6,5)**2)**2-4D0*P(IPU5,5)**2*
+ & P(IPU6,5)**2
+ PABS=SQRT(MAX(0D0,SQLAM/(4D0*SH)))
+ CTHWZ=VINT(23)
+ STHWZ=SQRT(MAX(0D0,1D0-CTHWZ**2))
+ PHIWZ=VINT(24)-PHICM
+ P(IPU5,1)=PABS*STHWZ*COS(PHIWZ)
+ P(IPU5,2)=PABS*STHWZ*SIN(PHIWZ)
+ P(IPU5,3)=PABS*CTHWZ
+ P(IPU5,4)=SQRT(PABS**2+P(IPU5,5)**2)
+ P(IPU6,1)=-P(IPU5,1)
+ P(IPU6,2)=-P(IPU5,2)
+ P(IPU6,3)=-P(IPU5,3)
+ P(IPU6,4)=SQRT(PABS**2+P(IPU6,5)**2)
+ CALL PYROBO(IPU5,IPU6,THECM,PHICM,BEXCM,BEYCM,BEZCM)
+ DO 620 JT=1,2
+ I1=MINT(83)+8+JT
+ I2=MINT(84)+4+JT
+ K(I1,1)=21
+ K(I1,2)=K(I2,2)
+ DO 610 J=1,5
+ P(I1,J)=P(I2,J)
+ 610 CONTINUE
+ 620 CONTINUE
+ N=IPU6
+ MINT(7)=MINT(83)+9
+ MINT(8)=MINT(83)+10
+ ENDIF
+
+ IF(ISET(ISUB).EQ.11) THEN
+ ELSEIF(IDOC.GE.8) THEN
+C...Store colour connection indices
+ DO 630 J=1,2
+ JC=J
+ IF(KCS.EQ.-1) JC=3-J
+ IF(ICOL(KCC,1,JC).NE.0.AND.K(IPU1,1).EQ.14) K(IPU1,J+3)=
+ & K(IPU1,J+3)+MINT(84)+ICOL(KCC,1,JC)
+ IF(ICOL(KCC,2,JC).NE.0.AND.K(IPU2,1).EQ.14) K(IPU2,J+3)=
+ & K(IPU2,J+3)+MINT(84)+ICOL(KCC,2,JC)
+ IF(ICOL(KCC,3,JC).NE.0.AND.K(IPU3,1).EQ.3) K(IPU3,J+3)=
+ & MSTU(5)*(MINT(84)+ICOL(KCC,3,JC))
+ IF(ICOL(KCC,4,JC).NE.0.AND.K(IPU4,1).EQ.3) K(IPU4,J+3)=
+ & MSTU(5)*(MINT(84)+ICOL(KCC,4,JC))
+ 630 CONTINUE
+
+C...Copy outgoing partons to documentation lines
+ IMAX=2
+ IF(IDOC.EQ.9) IMAX=3
+ DO 650 I=1,IMAX
+ I1=MINT(83)+IDOC-IMAX+I
+ I2=MINT(84)+2+I
+ K(I1,1)=21
+ K(I1,2)=K(I2,2)
+ IF(IDOC.LE.9) K(I1,3)=0
+ IF(IDOC.GE.11) K(I1,3)=MINT(83)+2+I
+ DO 640 J=1,5
+ P(I1,J)=P(I2,J)
+ 640 CONTINUE
+ 650 CONTINUE
+
+ ELSEIF(IDOC.EQ.9) THEN
+C...Store colour connection indices
+ DO 660 J=1,2
+ JC=J
+ IF(KCS.EQ.-1) JC=3-J
+ IF(ICOL(KCC,1,JC).NE.0.AND.K(IPU1,1).EQ.14) K(IPU1,J+3)=
+ & K(IPU1,J+3)+MINT(84)+ICOL(KCC,1,JC)+
+ & MAX(0,MIN(1,ICOL(KCC,1,JC)-2))
+ IF(ICOL(KCC,2,JC).NE.0.AND.K(IPU2,1).EQ.14) K(IPU2,J+3)=
+ & K(IPU2,J+3)+MINT(84)+ICOL(KCC,2,JC)+
+ & MAX(0,MIN(1,ICOL(KCC,2,JC)-2))
+ IF(ICOL(KCC,3,JC).NE.0.AND.K(IPU4,1).EQ.3) K(IPU4,J+3)=
+ & MSTU(5)*(MINT(84)+ICOL(KCC,3,JC))
+ IF(ICOL(KCC,4,JC).NE.0.AND.K(IPU5,1).EQ.3) K(IPU5,J+3)=
+ & MSTU(5)*(MINT(84)+ICOL(KCC,4,JC))
+ 660 CONTINUE
+
+C...Copy outgoing partons to documentation lines
+ DO 680 I=1,3
+ I1=MINT(83)+IDOC-3+I
+ I2=MINT(84)+2+I
+ K(I1,1)=21
+ K(I1,2)=K(I2,2)
+ K(I1,3)=0
+ DO 670 J=1,5
+ P(I1,J)=P(I2,J)
+ 670 CONTINUE
+ 680 CONTINUE
+ ENDIF
+
+C...Copy outgoing partons to list of allowed radiators.
+ NPART=0
+ IF(MINT(35).GE.2.AND.ISET(ISUB).NE.0) THEN
+ DO 690 I=MINT(84)+3,N
+ NPART=NPART+1
+ IPART(NPART)=I
+ PTPART(NPART)=SQRT(P(I,5)**2+P(I,1)**2+P(I,2)**2)
+ 690 CONTINUE
+ ENDIF
+
+C...Low-pT events: remove gluons used for string drawing purposes
+ IF(ISUB.EQ.95) THEN
+ IF(MINT(35).LE.1) THEN
+ K(IPU3,1)=K(IPU3,1)+10
+ K(IPU4,1)=K(IPU4,1)+10
+ ENDIF
+ DO 700 J=41,66
+ VINTSV(J)=VINT(J)
+ VINT(J)=0D0
+ 700 CONTINUE
+ DO 720 I=MINT(83)+5,MINT(83)+8
+ DO 710 J=1,5
+ P(I,J)=0D0
+ 710 CONTINUE
+ 720 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYEVOL
+C...Handles intertwined pT-ordered spacelike initial-state parton
+C...and multiple interactions.
+
+ SUBROUTINE PYEVOL(MODE,PT2MAX,PT2MIN)
+C...Mode = -1 : Initialize first time. Determine MAX and MIN scales.
+C...MODE = 0 : (Re-)initialize ISR/MI evolution.
+C...Mode = 1 : Evolve event from PT2MAX to PT2MIN.
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...External
+ EXTERNAL PYALPS
+ DOUBLE PRECISION PYALPS
+C...Parameter statement for maximum size of showers.
+ PARAMETER (MAXNUR=1000)
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYISMX/MIMX,JSMX,KFLAMX,KFLCMX,KFBEAM(2),NISGEN(2,240),
+ & PT2MX,PT2AMX,ZMX,RM2CMX,Q2BMX,PHIMX
+ COMMON/PYISJN/MJN1MX,MJN2MX,MJOIND(2,240)
+C...Local arrays and saved variables.
+ DIMENSION VINTSV(11:80),KSAV(4,5),PSAV(4,5),VSAV(4,5),SHAT(240)
+ SAVE NSAV,NPARTS,M15SV,M16SV,M21SV,M22SV,VINTSV,SHAT,ISUBHD,ALAM3
+ & ,PSAV,KSAV,VSAV
+
+ SAVE /PYPART/,/PYJETS/,/PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,
+ & /PYINT2/,/PYINT3/,/PYINTM/,/PYCTAG/,/PYISMX/,/PYISJN/
+
+C----------------------------------------------------------------------
+C...MODE=-1: Pre-initialization. Store info on hard scattering etc,
+C...done only once per event, while MODE=0 is repeated each time the
+C...evolution needs to be restarted.
+ IF (MODE.EQ.-1) THEN
+ ISUBHD=MINT(1)
+ NSAV=N
+ NPARTS=NPART
+C...Store hard scattering variables
+ M15SV=MINT(15)
+ M16SV=MINT(16)
+ M21SV=MINT(21)
+ M22SV=MINT(22)
+ DO 100 J=11,80
+ VINTSV(J)=VINT(J)
+ 100 CONTINUE
+ DO 120 J=1,5
+ DO 110 IS=1,4
+ I=IS+MINT(84)
+ PSAV(IS,J)=P(I,J)
+ KSAV(IS,J)=K(I,J)
+ VSAV(IS,J)=V(I,J)
+ 110 CONTINUE
+ 120 CONTINUE
+
+C...Set shat for hardest scattering
+ SHAT(1)=VINT(44)
+ IF(ISET(ISUBHD).GE.3.AND.ISET(ISUBHD).LE.5) SHAT(1)=VINT(26)
+ & *VINT(2)
+
+C...Compute 3-Flavour Lambda_QCD (sets absolute lowest PT scale below)
+ RMC=PMAS(4,1)
+ RMB=PMAS(5,1)
+ ALAM4=PARP(61)
+ IF(MSTU(112).LT.4) ALAM4=PARP(61)*(PARP(61)/RMC)**(2D0/25D0)
+ IF(MSTU(112).GT.4) ALAM4=PARP(61)*(RMB/PARP(61))**(2D0/25D0)
+ ALAM3=ALAM4*(RMC/ALAM4)**(2D0/27D0)
+
+C----------------------------------------------------------------------
+C...MODE= 0: Initialize ISR/MI evolution, i.e. begin from hardest
+C...interaction initiators, with no previous evolution. Check the input
+C...PT2MAX and PT2MIN and impose extra constraints on minimum PT2 (e.g.
+C...must be larger than Lambda_QCD) and maximum PT2 (e.g. must be
+C...smaller than the CM energy / 2.)
+ ELSEIF (MODE.EQ.0) THEN
+C...Reset counters and switches
+ N=NSAV
+ NPART=NPARTS
+ MINT(30)=0
+ MINT(31)=1
+ MINT(36)=1
+C...Reset hard scattering variables
+ MINT(1)=ISUBHD
+ DO 130 J=11,80
+ VINT(J)=VINTSV(J)
+ 130 CONTINUE
+ DO 150 J=1,5
+ DO 140 IS=1,4
+ I=IS+MINT(84)
+ P(I,J)=PSAV(IS,J)
+ K(I,J)=KSAV(IS,J)
+ V(I,J)=VSAV(IS,J)
+ P(MINT(83)+4+IS,J)=PSAV(IS,J)
+ V(MINT(83)+4+IS,J)=VSAV(IS,J)
+ 140 CONTINUE
+ 150 CONTINUE
+C...Reset statistics on activity in event.
+ DO 160 J=351,359
+ MINT(J)=0
+ VINT(J)=0D0
+ 160 CONTINUE
+C...Reset extra companion reweighting factor
+ VINT(140)=1D0
+
+C...We do not generate MI for soft process (ISUB=95), but the
+C...initialization must be done regardless, for later purposes.
+ MINT(36)=1
+
+C...Initialize multiple interactions.
+ CALL PYPTMI(-1,PTDUM1,PTDUM2,PTDUM3,IDUM)
+ IF(MINT(51).NE.0) RETURN
+
+C...Decide whether quarks in hard scattering were valence or sea
+ PT2HD=VINT(54)
+ DO 170 JS=1,2
+ MINT(30)=JS
+ CALL PYPTMI(2,PT2HD,PTDUM2,PTDUM3,IDUM)
+ IF(MINT(51).NE.0) RETURN
+ 170 CONTINUE
+
+C...Set lower cutoff for PT2 iteration and colour interference PT2 scale
+ VINT(18)=0D0
+ IF(MSTP(70).EQ.0) THEN
+ PT20=PARP(62)**2
+ PT2MIN=MAX(PT2MIN,PT20,(1.1D0*ALAM3)**2)
+ ELSEIF(MSTP(70).EQ.1) THEN
+ PT20=(PARP(81)*(VINT(1)/PARP(89))**PARP(90))**2
+ PT2MIN=MAX(PT2MIN,PT20,(1.1D0*ALAM3)**2)
+ ELSE
+ VINT(18)=(PARP(82)*(VINT(1)/PARP(89))**PARP(90))**2
+ PT2MIN=MAX(PT2MIN,(1.1D0*ALAM3)**2)
+ ENDIF
+C...Also store PT2MIN in VINT(17).
+ 180 VINT(17)=PT2MIN
+
+C...Set FS masses zero now.
+ VINT(63)=0D0
+ VINT(64)=0D0
+
+C...Initialize IS showers with VINT(56) as max scale.
+ PT2ISR=VINT(56)
+ CALL PYPTIS(-1,PT2ISR,PT2MIN,PT2DUM,IFAIL)
+ IF(MINT(51).NE.0) RETURN
+
+ RETURN
+
+C----------------------------------------------------------------------
+C...MODE= 1: Evolve event from PTMAX to PTMIN.
+ ELSEIF (MODE.EQ.1) THEN
+
+C...Skip if no phase space.
+ 190 IF (PT2MAX.LE.PT2MIN) GOTO 330
+
+C...Starting pT2 max scale (to be udpated successively).
+ PT2CMX=PT2MAX
+
+C...Evolve two sides of the event to find which branches at highest pT.
+ 200 JSMX=-1
+ MIMX=0
+ PT2MX=0D0
+
+C...Loop over current shower initiators.
+ IF (MSTP(61).GE.1) THEN
+ DO 230 MI=1,MINT(31)
+ IF (MI.GE.2.AND.MSTP(84).LE.0) GOTO 230
+ ISUB=96
+ IF (MI.EQ.1) ISUB=ISUBHD
+ MINT(1)=ISUB
+ MINT(36)=MI
+C...Set up shat, initiator x values, and x remaining in BR.
+ VINT(44)=SHAT(MI)
+ VINT(141)=XMI(1,MI)
+ VINT(142)=XMI(2,MI)
+ VINT(143)=1D0
+ VINT(144)=1D0
+ DO 210 JI=1,MINT(31)
+ IF (JI.EQ.MINT(36)) GOTO 210
+ VINT(143)=VINT(143)-XMI(1,JI)
+ VINT(144)=VINT(144)-XMI(2,JI)
+ 210 CONTINUE
+C...Loop over sides.
+C...Generate trial branchings for this interaction. The hardest
+C...branching so far is automatically updated if necessary in /PYISMX/.
+ DO 220 JS=1,2
+ MINT(30)=JS
+ CALL PYPTIS(0,PT2CMX,PT2MIN,PT2NEW,IFAIL)
+ IF (MINT(51).NE.0) RETURN
+ 220 CONTINUE
+ 230 CONTINUE
+ ENDIF
+
+C...Generate trial additional interaction.
+ MINT(36)=MINT(31)+1
+ 240 IF (MOD(MSTP(81),10).GE.1) THEN
+ MINT(1)=96
+C...Set up X remaining in BR.
+ VINT(143)=1D0
+ VINT(144)=1D0
+ DO 250 JI=1,MINT(31)
+ VINT(143)=VINT(143)-XMI(1,JI)
+ VINT(144)=VINT(144)-XMI(2,JI)
+ 250 CONTINUE
+C...Generate trial interaction
+ 260 CALL PYPTMI(0,PT2CMX,PT2MIN,PT2NEW,IFAIL)
+ IF (MINT(51).EQ.1) RETURN
+ ENDIF
+
+C...And the winner is:
+ IF (PT2MX.LT.PT2MIN) THEN
+ GOTO 330
+ ELSEIF (JSMX.EQ.0) THEN
+C...Accept additional interaction (may still fail).
+ CALL PYPTMI(1,PT2NEW,PT2MIN,PT2DUM,IFAIL)
+ IF(MINT(51).NE.0) RETURN
+ IF (IFAIL.EQ.0) THEN
+ SHAT(MINT(36))=VINT(44)
+C...Decide on flavours (valence/sea/companion).
+ DO 270 JS=1,2
+ MINT(30)=JS
+ CALL PYPTMI(2,PT2NEW,PT2MIN,PT2DUM,IFAIL)
+ IF(MINT(51).NE.0) RETURN
+ 270 CONTINUE
+ ENDIF
+ ELSEIF (JSMX.EQ.1.OR.JSMX.EQ.2) THEN
+C...Reconstruct kinematics of acceptable ISR branching.
+C...Set up shat, initiator x values, and x remaining in BR.
+ MINT(30)=JSMX
+ MINT(36)=MIMX
+ VINT(44)=SHAT(MINT(36))
+ VINT(141)=XMI(1,MINT(36))
+ VINT(142)=XMI(2,MINT(36))
+ VINT(143)=1D0
+ VINT(144)=1D0
+ DO 280 JI=1,MINT(31)
+ IF (JI.EQ.MINT(36)) GOTO 280
+ VINT(143)=VINT(143)-XMI(1,JI)
+ VINT(144)=VINT(144)-XMI(2,JI)
+ 280 CONTINUE
+ PT2NEW=PT2MX
+ CALL PYPTIS(1,PT2NEW,PT2DM1,PT2DM2,IFAIL)
+ IF (MINT(51).EQ.1) RETURN
+ ELSEIF (JSMX.EQ.3.OR.JSMX.EQ.4) THEN
+C...Bookeep joining. Cannot (yet) be constructed kinematically.
+ MINT(354)=MINT(354)+1
+ VINT(354)=VINT(354)+SQRT(PT2MX)
+ IF (MINT(354).EQ.1) VINT(359)=SQRT(PT2MX)
+ MJOIND(JSMX-2,MJN1MX)=MJN2MX
+ MJOIND(JSMX-2,MJN2MX)=MJN1MX
+ ENDIF
+
+C...Update PT2 iteration scale.
+ PT2CMX=PT2MX
+
+C...Loop back to continue evolution.
+ IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYEVOL:) no more memory left in PYJETS')
+ ELSE
+ IF (JSMX.GE.0.AND.PT2CMX.GE.PT2MIN) GOTO 200
+ ENDIF
+
+C----------------------------------------------------------------------
+C...MODE= 2: (Re-)store user information on hardest interaction etc.
+ ELSEIF (MODE.EQ.2) THEN
+
+C...Revert to "ordinary" meanings of some parameters.
+ 290 DO 310 JS=1,2
+ MINT(12+JS)=K(IMI(JS,1,1),2)
+ VINT(140+JS)=XMI(JS,1)
+ IF(MINT(18+JS).EQ.1) VINT(140+JS)=VINT(154+JS)*XMI(JS,1)
+ VINT(142+JS)=1D0
+ DO 300 MI=1,MINT(31)
+ VINT(142+JS)=VINT(142+JS)-XMI(JS,MI)
+ 300 CONTINUE
+ 310 CONTINUE
+
+C...Restore saved quantities for hardest interaction.
+ MINT(1)=ISUBHD
+ MINT(15)=M15SV
+ MINT(16)=M16SV
+ MINT(21)=M21SV
+ MINT(22)=M22SV
+ DO 320 J=11,80
+ VINT(J)=VINTSV(J)
+ 320 CONTINUE
+
+ ENDIF
+
+ 330 RETURN
+ END
+
+C*********************************************************************
+
+C...PYSSPA
+C...Generates spacelike parton showers.
+
+ SUBROUTINE PYSSPA(IPU1,IPU2)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT2/,/PYINT3/
+C...Local arrays and data.
+ DIMENSION KFLS(4),IS(2),XS(2),ZS(2),Q2S(2),TEVCSV(2),TEVESV(2),
+ &XFS(2,-25:25),XFA(-25:25),XFB(-25:25),XFN(-25:25),WTAPC(-25:25),
+ &WTAPE(-25:25),WTSF(-25:25),THE2(2),ALAM(2),DQ2(3),DPC(3),DPD(4),
+ &DPB(4),ROBO(5),MORE(2),KFBEAM(2),Q2MNCS(2),KCFI(2),NFIS(2),
+ &THEFIS(2,2),ISFI(2),DPHI(2),MCESV(2)
+ DATA IS/2*0/
+
+C...Read out basic information; set global Q^2 scale.
+ IPUS1=IPU1
+ IPUS2=IPU2
+ ISUB=MINT(1)
+ Q2MX=VINT(56)
+ VINT2R=VINT(2)*VINT(143)*VINT(144)
+ IF(ISET(ISUB).EQ.2.OR.ISET(ISUB).EQ.9.OR.ISET(ISUB).EQ.11) Q2MX=
+ &MIN(VINT2R,PARP(67)*VINT(56))
+ FCQ2MX=1D0
+
+C...Define which processes ME corrections have been implemented for.
+ MECOR=0
+ IF(MSTP(68).EQ.1.OR.MSTP(68).EQ.3) THEN
+ IF(ISUB.EQ.1.OR.ISUB.EQ.2.OR.ISUB.EQ.141.OR.ISUB.EQ.142.OR.
+ & ISUB.EQ.144) MECOR=1
+ IF(ISUB.EQ.102.OR.ISUB.EQ.152.OR.ISUB.EQ.157) MECOR=2
+ IF(ISUB.EQ.3.OR.ISUB.EQ.151.OR.ISUB.EQ.156) MECOR=3
+ ENDIF
+
+C...Initialize QCD evolution and check phase space.
+ Q2MNC=PARP(62)**2
+ Q2MNCS(1)=Q2MNC
+ Q2MNCS(2)=Q2MNC
+ IF(MINT(107).EQ.2.AND.MSTP(66).EQ.2) THEN
+ Q0S=PARP(15)**2
+ PS=VINT(3)**2
+ Q2EFF=VINT(54)*((Q0S+PS)/(VINT(54)+PS))*
+ & EXP(PS*(VINT(54)-Q0S)/((VINT(54)+PS)*(Q0S+PS)))
+ Q2INT=SQRT(Q0S*Q2EFF)
+ Q2MNCS(1)=MAX(Q2MNC,Q2INT)
+ ELSEIF(MINT(107).EQ.3.AND.MSTP(66).GE.1) THEN
+ Q2MNCS(1)=MAX(Q2MNC,VINT(283))
+ ENDIF
+ IF(MINT(108).EQ.2.AND.MSTP(66).EQ.2) THEN
+ Q0S=PARP(15)**2
+ PS=VINT(4)**2
+ Q2EFF=VINT(54)*((Q0S+PS)/(VINT(54)+PS))*
+ & EXP(PS*(VINT(54)-Q0S)/((VINT(54)+PS)*(Q0S+PS)))
+ Q2INT=SQRT(Q0S*Q2EFF)
+ Q2MNCS(2)=MAX(Q2MNC,Q2INT)
+ ELSEIF(MINT(108).EQ.3.AND.MSTP(66).GE.1) THEN
+ Q2MNCS(2)=MAX(Q2MNC,VINT(284))
+ ENDIF
+ MCEV=0
+ ALAMS=PARU(112)
+ PARU(112)=PARP(61)
+ FQ2C=1D0
+ TCMX=0D0
+ IF(MINT(47).GE.2.AND.(MINT(47).LT.5.OR.MSTP(12).GE.1)) THEN
+ MCEV=1
+ IF(MSTP(64).EQ.1) FQ2C=PARP(63)
+ IF(MSTP(64).EQ.2) FQ2C=PARP(64)
+ TCMX=LOG(FQ2C*Q2MX/PARP(61)**2)
+ IF(Q2MX.LT.MAX(Q2MNC,2D0*PARP(61)**2).OR.TCMX.LT.0.2D0)
+ & MCEV=0
+ ENDIF
+
+C...Initialize QED evolution and check phase space.
+ MEEV=0
+ XEE=1D-10
+ SPME=PMAS(11,1)**2
+ IF(IABS(MINT(11)).EQ.13.OR.IABS(MINT(12)).EQ.13)
+ &SPME=PMAS(13,1)**2
+ IF(IABS(MINT(11)).EQ.15.OR.IABS(MINT(12)).EQ.15)
+ &SPME=PMAS(15,1)**2
+ Q2MNE=MAX(PARP(68)**2,2D0*SPME)
+ TEMX=0D0
+ FWTE=10D0
+ IF(MINT(45).EQ.3.OR.MINT(46).EQ.3) THEN
+ MEEV=1
+ TEMX=LOG(Q2MX/SPME)
+ IF(Q2MX.LE.Q2MNE.OR.TEMX.LT.0.2D0) MEEV=0
+ ENDIF
+ IF(MSTP(61).GE.2.AND.MCEV.EQ.1.AND.MEEV.EQ.0) THEN
+ MEEV=2
+ TEMX=TCMX
+ FWTE=1D0
+ ENDIF
+ IF(MCEV.EQ.0.AND.MEEV.EQ.0) RETURN
+
+C...Loopback point in case of failure to reconstruct kinematics.
+ NS=N
+ LOOP=0
+ MNT352=MINT(352)
+ MNT353=MINT(353)
+ VNT352=VINT(352)
+ VNT353=VINT(353)
+ 100 LOOP=LOOP+1
+ IF(LOOP.GT.100) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ N=NS
+ MINT(352)=MNT352
+ MINT(353)=MNT353
+ VINT(352)=VNT352
+ VINT(353)=VNT353
+
+C...Initial values: flavours, momenta, virtualities.
+ DO 120 JT=1,2
+ MORE(JT)=1
+ KFBEAM(JT)=MINT(10+JT)
+ IF(MINT(18+JT).EQ.1)KFBEAM(JT)=22
+ KFLS(JT)=MINT(14+JT)
+ KFLS(JT+2)=KFLS(JT)
+ XS(JT)=VINT(40+JT)
+ IF(MINT(18+JT).EQ.1) XS(JT)=VINT(40+JT)/VINT(154+JT)
+ IF(MINT(31).GE.2) XS(JT)=XS(JT)/VINT(142+JT)
+ ZS(JT)=1D0
+ Q2S(JT)=FCQ2MX*Q2MX
+ DQ2(JT)=0D0
+ TEVCSV(JT)=TCMX
+ ALAM(JT)=PARP(61)
+ THE2(JT)=1D0
+ TEVESV(JT)=TEMX
+ MCESV(JT)=0
+C...Calculate initial parton distribution weights.
+ MINT(105)=MINT(102+JT)
+ MINT(109)=MINT(106+JT)
+ VINT(120)=VINT(2+JT)
+C.... ALICE
+C.... Store side in MINT(124)
+ MINT(124) = JT
+C....
+ IF(XS(JT).LT.1D0-XEE) THEN
+ IF(MINT(31).GE.2) MINT(30)=JT
+ IF(MSTP(57).LE.1) THEN
+ CALL PYPDFU(KFBEAM(JT),XS(JT),Q2S(JT),XFB)
+ ELSE
+ CALL PYPDFL(KFBEAM(JT),XS(JT),Q2S(JT),XFB)
+ ENDIF
+ ENDIF
+ DO 110 KFL=-25,25
+ XFS(JT,KFL)=XFB(KFL)
+ 110 CONTINUE
+C...Special kinematics check for c/b quarks (that g -> c cbar or
+C...b bbar kinematically possible).
+ KFLCB=IABS(KFLS(JT))
+ IF(KFBEAM(JT).NE.22.AND.(KFLCB.EQ.4.OR.KFLCB.EQ.5)) THEN
+ IF(XS(JT).GT.0.9D0*Q2S(JT)/(PMAS(KFLCB,1)**2+Q2S(JT))) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ ENDIF
+ 120 CONTINUE
+ DSH=VINT(44)
+ IF(ISET(ISUB).GE.3.AND.ISET(ISUB).LE.5) DSH=VINT(26)*VINT(2)
+
+C...Find if interference with final state partons.
+ MFIS=0
+ IF(MSTP(67).GE.1.AND.MSTP(67).LE.3) MFIS=MSTP(67)
+ IF(MFIS.NE.0) THEN
+ DO 140 I=1,2
+ KCFI(I)=0
+ KCA=PYCOMP(IABS(KFLS(I)))
+ IF(KCA.NE.0) KCFI(I)=KCHG(KCA,2)*ISIGN(1,KFLS(I))
+ NFIS(I)=0
+ IF(KCFI(I).NE.0) THEN
+ IF(I.EQ.1) IPFS=IPUS1
+ IF(I.EQ.2) IPFS=IPUS2
+ DO 130 J=1,2
+ ICSI=MOD(K(IPFS,3+J),MSTU(5))
+ IF(ICSI.GT.0.AND.ICSI.NE.IPUS1.AND.ICSI.NE.IPUS2.AND.
+ & (KCFI(I).EQ.(-1)**(J+1).OR.KCFI(I).EQ.2)) THEN
+ NFIS(I)=NFIS(I)+1
+ THEFIS(I,NFIS(I))=PYANGL(P(ICSI,3),SQRT(P(ICSI,1)**2+
+ & P(ICSI,2)**2))
+ IF(I.EQ.2) THEFIS(I,NFIS(I))=PARU(1)-THEFIS(I,NFIS(I))
+ ENDIF
+ 130 CONTINUE
+ ENDIF
+ 140 CONTINUE
+ IF(NFIS(1)+NFIS(2).EQ.0) MFIS=0
+ ENDIF
+
+C...Pick up leg with highest virtuality.
+ JTOLD=1
+ 150 N=N+1
+ JT=1
+ IF(N.GT.NS+1.AND.Q2S(2).GT.Q2S(1)) JT=2
+ IF(N.EQ.NS+2.AND.JT.EQ.JTOLD) JT=3-JT
+ IF(MORE(JT).EQ.0) JT=3-JT
+ JTOLD=JT
+ KFLB=KFLS(JT)
+ XB=XS(JT)
+ DO 160 KFL=-25,25
+ XFB(KFL)=XFS(JT,KFL)
+ 160 CONTINUE
+ DSHR=2D0*SQRT(DSH)
+ DSHZ=DSH/ZS(JT)
+
+C...Check if allowed to branch.
+ MCEV=0
+ IF(IABS(KFLB).LE.10.OR.KFLB.EQ.21) THEN
+ MCEV=1
+ XEC=MAX(PARP(65)*DSHR/VINT2R,XB*(1D0/(1D0-PARP(66))-1D0))
+ IF(XB.GE.1D0-2D0*XEC) MCEV=0
+ ENDIF
+ MEEV=0
+ IF(MINT(44+JT).EQ.3) THEN
+ MEEV=1
+ IF(XB.GE.1D0-2D0*XEE) MEEV=0
+ IF((IABS(KFLB).LE.10.OR.KFLB.EQ.21).AND.XB.GE.1D0-2D0*XEC)
+ & MEEV=0
+C***Currently kill QED shower for resolved photoproduction.
+ IF(MINT(18+JT).EQ.1) MEEV=0
+C***Currently kill shower for W inside electron.
+ IF(IABS(KFLB).EQ.24) THEN
+ MCEV=0
+ MEEV=0
+ ENDIF
+ ENDIF
+ IF(MSTP(61).GE.2.AND.MCEV.EQ.1.AND.MEEV.EQ.0.AND.IABS(KFLB).LE.10)
+ &MEEV=2
+ IF(MCEV.EQ.0.AND.MEEV.EQ.0) THEN
+ Q2B=0D0
+ GOTO 260
+ ENDIF
+
+C...Maximum Q2 with or without Q2 ordering. Effective Lambda and n_f.
+ Q2B=Q2S(JT)
+ TEVCB=TEVCSV(JT)
+ TEVEB=TEVESV(JT)
+ IF(MSTP(62).LE.1) THEN
+ IF(ZS(JT).GT.0.99999D0) THEN
+ Q2B=Q2S(JT)
+ ELSE
+ Q2B=0.5D0*(1D0/ZS(JT)+1D0)*Q2S(JT)+0.5D0*(1D0/ZS(JT)-1D0)*
+ & (Q2S(3-JT)-DSH+SQRT((DSH+Q2S(1)+Q2S(2))**2+
+ & 8D0*Q2S(1)*Q2S(2)*ZS(JT)/(1D0-ZS(JT))))
+ ENDIF
+ IF(MCEV.EQ.1) TEVCB=LOG(FQ2C*Q2B/ALAM(JT)**2)
+ IF(MEEV.EQ.1) TEVEB=LOG(Q2B/SPME)
+ ENDIF
+ IF(MCEV.EQ.1) THEN
+ ALSDUM=PYALPS(FQ2C*Q2B)
+ TEVCB=TEVCB+2D0*LOG(ALAM(JT)/PARU(117))
+ ALAM(JT)=PARU(117)
+ B0=(33D0-2D0*MSTU(118))/6D0
+ ENDIF
+ IF(MEEV.EQ.2) TEVEB=TEVCB
+ TEVCBS=TEVCB
+ TEVEBS=TEVEB
+
+C...Select side for interference with final state partons.
+ IF(MFIS.GE.1.AND.N.LE.NS+2) THEN
+ IFI=N-NS
+ ISFI(IFI)=0
+ IF(IABS(KCFI(IFI)).EQ.1.AND.NFIS(IFI).EQ.1) THEN
+ ISFI(IFI)=1
+ ELSEIF(KCFI(IFI).EQ.2.AND.NFIS(IFI).EQ.1) THEN
+ IF(PYR(0).GT.0.5D0) ISFI(IFI)=1
+ ELSEIF(KCFI(IFI).EQ.2.AND.NFIS(IFI).EQ.2) THEN
+ ISFI(IFI)=1
+ IF(PYR(0).GT.0.5D0) ISFI(IFI)=2
+ ENDIF
+ ENDIF
+
+C...Calculate preweighting factor for ME-corrected processes.
+ IF(MECOR.GE.1) CALL PYMEMX(MECOR,WTFF,WTGF,WTFG,WTGG)
+
+C...Calculate Altarelli-Parisi weights.
+ DO 170 KFL=-25,25
+ WTAPC(KFL)=0D0
+ WTAPE(KFL)=0D0
+ WTSF(KFL)=0D0
+ 170 CONTINUE
+C...q -> q (g or gamma emission), g -> q.
+ IF(IABS(KFLB).LE.10) THEN
+ WTAPC(KFLB)=(8D0/3D0)*LOG((1D0-XEC-XB)*(XB+XEC)/(XEC*(1D0-XEC)))
+ WTAPC(21)=0.5D0*(XB/(XB+XEC)-XB/(1D0-XEC))
+ EQ2=1D0/9D0
+ IF(MOD(IABS(KFLB),2).EQ.0) EQ2=4D0*EQ2
+ IF(MEEV.EQ.2) WTAPE(KFLB)=2.*EQ2*LOG((1D0-XEC-XB)*(XB+XEC)/
+ & (XEC*(1D0-XEC)))
+ IF(MECOR.GE.1.AND.(N.EQ.NS+1.OR.N.EQ.NS+2)) THEN
+ WTAPC(KFLB)=WTFF*WTAPC(KFLB)
+ WTAPC(21)=WTGF*WTAPC(21)
+ WTAPE(KFLB)=WTFF*WTAPE(KFLB)
+ ENDIF
+C...f -> f, gamma -> f.
+ ELSEIF(IABS(KFLB).LE.20) THEN
+ WTAPF1=LOG((1D0-XEE-XB)*(XB+XEE)/(XEE*(1D0-XEE)))
+ WTAPF2=LOG((1D0-XEE-XB)*(1D0-XEE)/(XEE*(XB+XEE)))
+ WTAPE(KFLB)=2D0*(WTAPF1+WTAPF2)
+ IF(MSTP(12).GE.1) WTAPE(22)=XB/(XB+XEE)-XB/(1D0-XEE)
+ IF(MECOR.GE.1.AND.(N.EQ.NS+1.OR.N.EQ.NS+2)) THEN
+ WTAPE(KFLB)=WTFF*WTAPE(KFLB)
+ WTAPE(22)=WTGF*WTAPE(22)
+ ENDIF
+C...f -> g, g -> g.
+ ELSEIF(KFLB.EQ.21) THEN
+ WTAPQ=(16D0/3D0)*(SQRT((1D0-XEC)/XB)-SQRT((XB+XEC)/XB))
+ DO 180 KFL=1,MSTP(58)
+ WTAPC(KFL)=WTAPQ
+ WTAPC(-KFL)=WTAPQ
+ 180 CONTINUE
+ WTAPC(21)=6D0*LOG((1D0-XEC-XB)/XEC)
+ IF(MECOR.GE.1.AND.(N.EQ.NS+1.OR.N.EQ.NS+2)) THEN
+ DO 190 KFL=1,MSTP(58)
+ WTAPC(KFL)=WTFG*WTAPC(KFL)
+ WTAPC(-KFL)=WTFG*WTAPC(-KFL)
+ 190 CONTINUE
+ WTAPC(21)=WTGG*WTAPC(21)
+ ENDIF
+C...f -> gamma, W+, W-.
+ ELSEIF(KFLB.EQ.22) THEN
+ WTAPF=LOG((1D0-XEE-XB)*(1D0-XEE)/(XEE*(XB+XEE)))/XB
+ WTAPE(11)=WTAPF
+ WTAPE(-11)=WTAPF
+ IF(MECOR.GE.1.AND.(N.EQ.NS+1.OR.N.EQ.NS+2)) THEN
+ WTAPE(11)=WTFG*WTAPE(11)
+ WTAPE(-11)=WTFG*WTAPE(-11)
+ ENDIF
+ ELSEIF(KFLB.EQ.24) THEN
+ WTAPE(-11)=1D0/(4D0*PARU(102))*LOG((1D0-XEE-XB)*(1D0-XEE)/
+ & (XEE*(XB+XEE)))/XB
+ ELSEIF(KFLB.EQ.-24) THEN
+ WTAPE(11)=1D0/(4D0*PARU(102))*LOG((1D0-XEE-XB)*(1D0-XEE)/
+ & (XEE*(XB+XEE)))/XB
+ ENDIF
+
+C...Calculate parton distribution weights and sum.
+ NTRY=0
+ 200 NTRY=NTRY+1
+ IF(NTRY.GT.500) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ WTSUMC=0D0
+ WTSUME=0D0
+ XFBO=MAX(1D-10,XFB(KFLB))
+ DO 210 KFL=-25,25
+ WTSF(KFL)=XFB(KFL)/XFBO
+ WTSUMC=WTSUMC+WTAPC(KFL)*WTSF(KFL)
+ WTSUME=WTSUME+WTAPE(KFL)*WTSF(KFL)
+ 210 CONTINUE
+ WTSUMC=MAX(0.0001D0,WTSUMC)
+ WTSUME=MAX(0.0001D0/FWTE,WTSUME)
+
+C...Choose new t: fix alpha_s, alpha_s(Q^2), alpha_s(k_T^2).
+ NTRY2=0
+ 220 NTRY2=NTRY2+1
+ IF(NTRY2.GT.500) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ IF(MCEV.EQ.1) THEN
+ IF(MSTP(64).LE.0) THEN
+ TEVCB=TEVCB+LOG(PYR(0))*PARU(2)/(PARU(111)*WTSUMC)
+ ELSEIF(MSTP(64).EQ.1) THEN
+ TEVCB=TEVCB*EXP(MAX(-50D0,LOG(PYR(0))*B0/WTSUMC))
+ ELSE
+ TEVCB=TEVCB*EXP(MAX(-50D0,LOG(PYR(0))*B0/(5D0*WTSUMC)))
+ ENDIF
+ ENDIF
+ IF(MEEV.EQ.1) THEN
+ TEVEB=TEVEB*EXP(MAX(-50D0,LOG(PYR(0))*PARU(2)/
+ & (PARU(101)*FWTE*WTSUME*TEMX)))
+ ELSEIF(MEEV.EQ.2) THEN
+ TEVEB=TEVEB+LOG(PYR(0))*PARU(2)/(PARU(101)*WTSUME)
+ ENDIF
+
+C...Translate t into Q2 scale; choose between QCD and QED evolution.
+ 230 IF(MCEV.EQ.1) Q2CB=ALAM(JT)**2*EXP(MAX(-50D0,TEVCB))/FQ2C
+ IF(MEEV.EQ.1) Q2EB=SPME*EXP(MAX(-50D0,TEVEB))
+ IF(MEEV.EQ.2) Q2EB=ALAM(JT)**2*EXP(MAX(-50D0,TEVEB))/FQ2C
+C...Ensure that Q2 is above threshold for charm/bottom.
+ KFLCB=IABS(KFLB)
+ IF(KFBEAM(JT).NE.22.AND.(KFLCB.EQ.4.OR.KFLCB.EQ.5).AND.
+ &MCEV.EQ.1) THEN
+ IF(Q2CB.LT.PMAS(KFLCB,1)**2) THEN
+ Q2CB=1.1D0*PMAS(KFLCB,1)**2
+ TEVCB=LOG(FQ2C*Q2B/ALAM(JT)**2)
+ FCQ2MX=MIN(2D0,1.05D0*FCQ2MX)
+ ENDIF
+ ENDIF
+ IF(KFBEAM(JT).NE.22.AND.(KFLCB.EQ.4.OR.KFLCB.EQ.5).AND.
+ &MEEV.EQ.2) THEN
+ IF(Q2EB.LT.PMAS(KFLCB,1)**2) MEEV=0
+ ENDIF
+ MCE=0
+ IF(MCEV.EQ.0.AND.MEEV.EQ.0) THEN
+ ELSEIF(MCEV.EQ.1.AND.MEEV.EQ.0) THEN
+ IF(Q2CB.GT.Q2MNCS(JT)) MCE=1
+ ELSEIF(MCEV.EQ.0.AND.MEEV.EQ.1) THEN
+ IF(Q2EB.GT.Q2MNE) MCE=2
+ ELSEIF(MCEV.EQ.0.AND.MEEV.EQ.2) THEN
+ IF(Q2EB.GT.Q2MNCS(JT)) MCE=2
+ ELSEIF(MCEV.EQ.1.AND.MEEV.EQ.2) THEN
+ IF(Q2CB.GT.Q2EB.AND.Q2CB.GT.Q2MNCS(JT)) MCE=1
+ IF(Q2EB.GT.Q2CB.AND.Q2EB.GT.Q2MNCS(JT)) MCE=2
+ ELSEIF(Q2MNCS(JT).GT.Q2MNE) THEN
+ MCE=1
+ IF(Q2EB.GT.Q2CB.OR.Q2CB.LE.Q2MNCS(JT)) MCE=2
+ IF(MCE.EQ.2.AND.Q2EB.LE.Q2MNE) MCE=0
+ ELSE
+ MCE=2
+ IF(Q2CB.GT.Q2EB.OR.Q2EB.LE.Q2MNE) MCE=1
+ IF(MCE.EQ.1.AND.Q2CB.LE.Q2MNCS(JT)) MCE=0
+ ENDIF
+
+C...Evolution possibly ended. Update t values.
+ IF(MCE.EQ.0) THEN
+ Q2B=0D0
+ GOTO 260
+ ELSEIF(MCE.EQ.1) THEN
+ Q2B=Q2CB
+ Q2REF=FQ2C*Q2B
+ IF(MEEV.EQ.1) TEVEB=LOG(Q2B/SPME)
+ IF(MEEV.EQ.2) TEVEB=LOG(FQ2C*Q2B/ALAM(JT)**2)
+ ELSE
+ Q2B=Q2EB
+ Q2REF=Q2B
+ IF(MCEV.EQ.1) TEVCB=LOG(FQ2C*Q2B/ALAM(JT)**2)
+ ENDIF
+
+C...Select flavour for branching parton.
+ IF(MCE.EQ.1) WTRAN=PYR(0)*WTSUMC
+ IF(MCE.EQ.2) WTRAN=PYR(0)*WTSUME
+ KFLA=-25
+ 240 KFLA=KFLA+1
+ IF(MCE.EQ.1) WTRAN=WTRAN-WTAPC(KFLA)*WTSF(KFLA)
+ IF(MCE.EQ.2) WTRAN=WTRAN-WTAPE(KFLA)*WTSF(KFLA)
+ IF(KFLA.LE.24.AND.WTRAN.GT.0D0) GOTO 240
+ IF(KFLA.EQ.25) THEN
+ Q2B=0D0
+ GOTO 260
+ ENDIF
+
+C...Choose z value and corrective weight.
+ WTZ=0D0
+C...q -> q + g or q -> q + gamma.
+ IF(IABS(KFLA).LE.10.AND.IABS(KFLB).LE.10) THEN
+ Z=1D0-((1D0-XB-XEC)/(1D0-XEC))*
+ & (XEC*(1D0-XEC)/((XB+XEC)*(1D0-XB-XEC)))**PYR(0)
+ WTZ=0.5D0*(1D0+Z**2)
+C...q -> g + q.
+ ELSEIF(IABS(KFLA).LE.10.AND.KFLB.EQ.21) THEN
+ Z=XB/(SQRT(XB+XEC)+PYR(0)*(SQRT(1D0-XEC)-SQRT(XB+XEC)))**2
+ WTZ=0.5D0*(1D0+(1D0-Z)**2)*SQRT(Z)
+C...f -> f + gamma.
+ ELSEIF(IABS(KFLA).LE.20.AND.IABS(KFLB).LE.20) THEN
+ IF(WTAPF1.GT.PYR(0)*(WTAPF1+WTAPF2)) THEN
+ Z=1D0-((1D0-XB-XEE)/(1D0-XEE))*
+ & (XEE*(1D0-XEE)/((XB+XEE)*(1D0-XB-XEE)))**PYR(0)
+ ELSE
+ Z=XB+XB*(XEE/(1D0-XEE))*
+ & ((1D0-XB-XEE)*(1D0-XEE)/(XEE*(XB+XEE)))**PYR(0)
+ ENDIF
+ WTZ=0.5D0*(1D0+Z**2)*(Z-XB)/(1D0-XB)
+C...f -> gamma + f.
+ ELSEIF(IABS(KFLA).LE.20.AND.KFLB.EQ.22) THEN
+ Z=XB+XB*(XEE/(1D0-XEE))*
+ & ((1D0-XB-XEE)*(1D0-XEE)/(XEE*(XB+XEE)))**PYR(0)
+ WTZ=0.5D0*(1D0+(1D0-Z)**2)*XB*(Z-XB)/Z
+C...f -> W+- + f.
+ ELSEIF(IABS(KFLA).LE.20.AND.IABS(KFLB).EQ.24) THEN
+ Z=XB+XB*(XEE/(1D0-XEE))*
+ & ((1D0-XB-XEE)*(1D0-XEE)/(XEE*(XB+XEE)))**PYR(0)
+ WTZ=0.5D0*(1D0+(1D0-Z)**2)*(XB*(Z-XB)/Z)*
+ & (Q2B/(Q2B+PMAS(24,1)**2))
+C...g -> q + qbar.
+ ELSEIF(KFLA.EQ.21.AND.IABS(KFLB).LE.10) THEN
+ Z=XB/(1D0-XEC)+PYR(0)*(XB/(XB+XEC)-XB/(1D0-XEC))
+ WTZ=1D0-2D0*Z*(1D0-Z)
+C...g -> g + g.
+ ELSEIF(KFLA.EQ.21.AND.KFLB.EQ.21) THEN
+ Z=1D0/(1D0+((1D0-XEC-XB)/XB)*(XEC/(1D0-XEC-XB))**PYR(0))
+ WTZ=(1D0-Z*(1D0-Z))**2
+C...gamma -> f + fbar.
+ ELSEIF(KFLA.EQ.22.AND.IABS(KFLB).LE.20) THEN
+ Z=XB/(1D0-XEE)+PYR(0)*(XB/(XB+XEE)-XB/(1D0-XEE))
+ WTZ=1D0-2D0*Z*(1D0-Z)
+ ENDIF
+ IF(MCE.EQ.2.AND.MEEV.EQ.1) WTZ=(WTZ/FWTE)*(TEVEB/TEMX)
+
+C...Option with resummation of soft gluon emission as effective z shift.
+ IF(MCE.EQ.1) THEN
+ IF(MSTP(65).GE.1) THEN
+ RSOFT=6D0
+ IF(KFLB.NE.21) RSOFT=8D0/3D0
+ Z=Z*(TEVCB/TEVCSV(JT))**(RSOFT*XEC/((XB+XEC)*B0))
+ IF(Z.LE.XB) GOTO 220
+ ENDIF
+
+C...Option with alpha_s(k_T^2): demand k_T^2 > cutoff, reweight.
+ IF(MSTP(64).GE.2) THEN
+ IF((1D0-Z)*Q2B.LT.Q2MNCS(JT)) GOTO 220
+ ALPRAT=TEVCB/(TEVCB+LOG(1D0-Z))
+ IF(ALPRAT.LT.5D0*PYR(0)) GOTO 220
+ IF(ALPRAT.GT.5D0) WTZ=WTZ*ALPRAT/5D0
+ ENDIF
+ ENDIF
+
+C...Remove kinematically impossible branchings.
+ UHAT=Q2B-DSH*(1D0-Z)/Z
+ IF(MSTP(68).GE.0.AND.UHAT.GT.0D0) GOTO 220
+
+C...Select phi angle of branching at random.
+ PHIBR=PARU(2)*PYR(0)
+
+C...Matrix-element corrections for some processes.
+ IF(MECOR.GE.1.AND.(N.EQ.NS+1.OR.N.EQ.NS+2)) THEN
+ IF(IABS(KFLA).LE.20.AND.IABS(KFLB).LE.20) THEN
+ CALL PYMEWT(MECOR,1,Q2B,Z,PHIBR,WTME)
+ WTZ=WTZ*WTME/WTFF
+ ELSEIF((KFLA.EQ.21.OR.KFLA.EQ.22).AND.IABS(KFLB).LE.20) THEN
+ CALL PYMEWT(MECOR,2,Q2B,Z,PHIBR,WTME)
+ WTZ=WTZ*WTME/WTGF
+ ELSEIF(IABS(KFLA).LE.20.AND.(KFLB.EQ.21.OR.KFLB.EQ.22)) THEN
+ CALL PYMEWT(MECOR,3,Q2B,Z,PHIBR,WTME)
+ WTZ=WTZ*WTME/WTFG
+ ELSEIF(KFLA.EQ.21.AND.KFLB.EQ.21) THEN
+ CALL PYMEWT(MECOR,4,Q2B,Z,PHIBR,WTME)
+ WTZ=WTZ*WTME/WTGG
+ ENDIF
+ ENDIF
+
+C...Impose angular constraint in first branching from interference
+C...with final state partons.
+ IF(MCE.EQ.1) THEN
+ IF(MFIS.GE.1.AND.N.LE.NS+2.AND.NTRY2.LT.200) THEN
+ THE2D=(4D0*Q2B)/(DSH*(1D0-Z))
+ IF(N.EQ.NS+1.AND.ISFI(1).GE.1) THEN
+ IF(THE2D.GT.THEFIS(1,ISFI(1))**2) GOTO 220
+ ELSEIF(N.EQ.NS+2.AND.ISFI(2).GE.1) THEN
+ IF(THE2D.GT.THEFIS(2,ISFI(2))**2) GOTO 220
+ ENDIF
+ ENDIF
+
+C...Option with angular ordering requirement.
+ IF(MSTP(62).GE.3.AND.NTRY2.LT.200) THEN
+ THE2T=(4D0*Z**2*Q2B)/(4D0*Z**2*Q2B+(1D0-Z)*XB**2*VINT2R)
+ IF(THE2T.GT.THE2(JT)) GOTO 220
+ ENDIF
+ ENDIF
+
+C...Weighting with new parton distributions.
+ MINT(105)=MINT(102+JT)
+ MINT(109)=MINT(106+JT)
+ VINT(120)=VINT(2+JT)
+C.... ALICE
+C.... Store side in MINT(124)
+ MINT(124)=JT
+C....
+ IF(MINT(31).GE.2) MINT(30)=JT
+ IF(MSTP(57).LE.1) THEN
+ CALL PYPDFU(KFBEAM(JT),XB,Q2REF,XFN)
+ ELSE
+ CALL PYPDFL(KFBEAM(JT),XB,Q2REF,XFN)
+ ENDIF
+ XFBN=XFN(KFLB)
+ IF(XFBN.LT.1D-20) THEN
+ IF(KFLA.EQ.KFLB) THEN
+ TEVCB=TEVCBS
+ TEVEB=TEVEBS
+ WTAPC(KFLB)=0D0
+ WTAPE(KFLB)=0D0
+ GOTO 200
+ ELSEIF(MCE.EQ.1.AND.TEVCBS-TEVCB.GT.0.2D0) THEN
+ TEVCB=0.5D0*(TEVCBS+TEVCB)
+ GOTO 230
+ ELSEIF(MCE.EQ.2.AND.TEVEBS-TEVEB.GT.0.2D0) THEN
+ TEVEB=0.5D0*(TEVEBS+TEVEB)
+ GOTO 230
+ ELSE
+ XFBN=1D-10
+ XFN(KFLB)=XFBN
+ ENDIF
+ ENDIF
+ DO 250 KFL=-25,25
+ XFB(KFL)=XFN(KFL)
+ 250 CONTINUE
+ XA=XB/Z
+C.... ALICE
+C.... Store side in MINT(124)
+ MINT(124) = JT
+C....
+ IF(MINT(31).GE.2) MINT(30)=JT
+ IF(MSTP(57).LE.1) THEN
+ CALL PYPDFU(KFBEAM(JT),XA,Q2REF,XFA)
+ ELSE
+ CALL PYPDFL(KFBEAM(JT),XA,Q2REF,XFA)
+ ENDIF
+ XFAN=XFA(KFLA)
+ IF(XFAN.LT.1D-20) GOTO 200
+ WTSFA=WTSF(KFLA)
+ IF(WTZ*XFAN/XFBN.LT.PYR(0)*WTSFA) GOTO 200
+
+C...Define two hard scatterers in their CM-frame.
+ 260 IF(N.EQ.NS+2) THEN
+ DQ2(JT)=Q2B
+ DPLCM=SQRT((DSH+DQ2(1)+DQ2(2))**2-4D0*DQ2(1)*DQ2(2))/DSHR
+ DO 280 JR=1,2
+ I=NS+JR
+ IF(JR.EQ.1) IPO=IPUS1
+ IF(JR.EQ.2) IPO=IPUS2
+ DO 270 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 270 CONTINUE
+ K(I,1)=14
+ K(I,2)=KFLS(JR+2)
+ K(I,4)=IPO
+ K(I,5)=IPO
+ P(I,3)=DPLCM*(-1)**(JR+1)
+ P(I,4)=(DSH+DQ2(3-JR)-DQ2(JR))/DSHR
+ P(I,5)=-SQRT(DQ2(JR))
+ K(IPO,1)=14
+ K(IPO,3)=I
+ K(IPO,4)=MOD(K(IPO,4),MSTU(5))+MSTU(5)*I
+ K(IPO,5)=MOD(K(IPO,5),MSTU(5))+MSTU(5)*I
+ 280 CONTINUE
+
+C...Find maximum allowed mass of timelike parton.
+ ELSEIF(N.GT.NS+2) THEN
+ JR=3-JT
+ DQ2(3)=Q2B
+ DPC(1)=P(IS(1),4)
+ DPC(2)=P(IS(2),4)
+ DPC(3)=0.5D0*(ABS(P(IS(1),3))+ABS(P(IS(2),3)))
+ DPD(1)=DSH+DQ2(JR)+DQ2(JT)
+ DPD(2)=DSHZ+DQ2(JR)+DQ2(3)
+ DPD(3)=SQRT(DPD(1)**2-4D0*DQ2(JR)*DQ2(JT))
+ DPD(4)=SQRT(DPD(2)**2-4D0*DQ2(JR)*DQ2(3))
+ IKIN=0
+ IF(Q2S(JR).GE.0.25D0*Q2MNC.AND.DPD(1)-DPD(3).GE.
+ & 1D-10*DPD(1)) IKIN=1
+ IF(IKIN.EQ.0) DMSMA=(DQ2(JT)/ZS(JT)-DQ2(3))*
+ & (DSH/(DSH+DQ2(JT))-DSH/(DSHZ+DQ2(3)))
+ IF(IKIN.EQ.1) DMSMA=(DPD(1)*DPD(2)-DPD(3)*DPD(4))/
+ & (2D0*DQ2(JR))-DQ2(JT)-DQ2(3)
+
+C...Generate timelike parton shower (if required).
+ IT=N
+ DO 290 J=1,5
+ K(IT,J)=0
+ P(IT,J)=0D0
+ V(IT,J)=0D0
+ 290 CONTINUE
+C...f -> f + g (gamma).
+ IF(IABS(KFLB).LE.20.AND.IABS(KFLS(JT+2)).LE.20) THEN
+ K(IT,2)=21
+ IF(MCESV(JT).EQ.2.OR.IABS(KFLB).GE.11) K(IT,2)=22
+C...f -> g (gamma, W+-) + f.
+ ELSEIF(IABS(KFLB).LE.20.AND.IABS(KFLS(JT+2)).GT.20) THEN
+ K(IT,2)=KFLB
+ IF(KFLS(JT+2).EQ.24) THEN
+ K(IT,2)=-12
+ ELSEIF(KFLS(JT+2).EQ.-24) THEN
+ K(IT,2)=12
+ ENDIF
+C...g (gamma) -> f + fbar, g + g.
+ ELSE
+ K(IT,2)=-KFLS(JT+2)
+ IF(KFLS(JT+2).GT.20) K(IT,2)=KFLS(JT+2)
+ ENDIF
+ K(IT,1)=3
+ IF((IABS(K(IT,2)).GE.11.AND.IABS(K(IT,2)).LE.18).OR.
+ & IABS(K(IT,2)).EQ.22) K(IT,1)=1
+ P(IT,5)=PYMASS(K(IT,2))
+ IF(DMSMA.LE.P(IT,5)**2) GOTO 100
+ IF(MSTP(63).GE.1.AND.MCESV(JT).EQ.1) THEN
+ MSTJ48=MSTJ(48)
+ PARJ85=PARJ(85)
+ P(IT,4)=(DSHZ-DSH-P(IT,5)**2)/DSHR
+ P(IT,3)=SQRT(P(IT,4)**2-P(IT,5)**2)
+ IF(MSTP(63).EQ.1) THEN
+ Q2TIM=DMSMA
+ ELSEIF(MSTP(63).EQ.2) THEN
+ Q2TIM=MIN(DMSMA,PARP(71)*Q2S(JT))
+ ELSE
+ Q2TIM=DMSMA
+ MSTJ(48)=1
+ IF(IKIN.EQ.0) DPT2=DMSMA*(DSHZ+DQ2(3))/(DSH+DQ2(JT))
+ IF(IKIN.EQ.1) DPT2=DMSMA*(0.5D0*DPD(1)*DPD(2)+0.5D0*DPD(3)*
+ & DPD(4)-DQ2(JR)*(DQ2(JT)+DQ2(3)))/(4D0*DSH*DPC(3)**2)
+ PARJ(85)=SQRT(MAX(0D0,DPT2))*
+ & (1D0/P(IT,4)+1D0/P(IS(JT),4))
+ ENDIF
+ if(parj(200).ne.1.) CALL PYSHOW(IT,0,SQRT(Q2TIM))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IT,0,SQRT(Q2TIM))
+ MSTJ(48)=MSTJ48
+ PARJ(85)=PARJ85
+ IF(N.GE.IT+1) P(IT,5)=P(IT+1,5)
+ ENDIF
+
+C...Reconstruct kinematics of branching: timelike parton shower.
+ DMS=P(IT,5)**2
+ IF(IKIN.EQ.0) DPT2=(DMSMA-DMS)*(DSHZ+DQ2(3))/(DSH+DQ2(JT))
+ IF(IKIN.EQ.1) DPT2=(DMSMA-DMS)*(0.5D0*DPD(1)*DPD(2)+
+ & 0.5D0*DPD(3)*DPD(4)-DQ2(JR)*(DQ2(JT)+DQ2(3)+DMS))/
+ & (4D0*DSH*DPC(3)**2)
+ IF(DPT2.LT.0D0) GOTO 100
+ DPB(1)=(0.5D0*DPD(2)-DPC(JR)*(DSHZ+DQ2(JR)-DQ2(JT)-DMS)/
+ & DSHR)/DPC(3)-DPC(3)
+ P(IT,1)=SQRT(DPT2)
+ P(IT,3)=DPB(1)*(-1)**(JT+1)
+ P(IT,4)=SQRT(DPT2+DPB(1)**2+DMS)
+ IF(N.GE.IT+1) THEN
+ DPB(1)=SQRT(DPB(1)**2+DPT2)
+ DPB(2)=SQRT(DPB(1)**2+DMS)
+ DPB(3)=P(IT+1,3)
+ DPB(4)=SQRT(DPB(3)**2+DMS)
+ DBEZ=(DPB(4)*DPB(1)-DPB(3)*DPB(2))/(DPB(4)*DPB(2)-DPB(3)*
+ & DPB(1))
+ CALL PYROBO(IT+1,N,0D0,0D0,0D0,0D0,DBEZ)
+ THE=PYANGL(P(IT,3),P(IT,1))
+ CALL PYROBO(IT+1,N,THE,0D0,0D0,0D0,0D0)
+ ENDIF
+
+C...Reconstruct kinematics of branching: spacelike parton.
+ DO 300 J=1,5
+ K(N+1,J)=0
+ P(N+1,J)=0D0
+ V(N+1,J)=0D0
+ 300 CONTINUE
+ K(N+1,1)=14
+ K(N+1,2)=KFLB
+ P(N+1,1)=P(IT,1)
+ P(N+1,3)=P(IT,3)+P(IS(JT),3)
+ P(N+1,4)=P(IT,4)+P(IS(JT),4)
+ P(N+1,5)=-SQRT(DQ2(3))
+
+C...Define colour flow of branching.
+ K(IS(JT),3)=N+1
+ K(IT,3)=N+1
+ IM1=N+1
+ IM2=N+1
+C...f -> f + gamma (Z, W).
+ IF(IABS(K(IT,2)).GE.22) THEN
+ K(IT,1)=1
+ ID1=IS(JT)
+ ID2=IS(JT)
+C...f -> gamma (Z, W) + f.
+ ELSEIF(IABS(K(IS(JT),2)).GE.22) THEN
+ ID1=IT
+ ID2=IT
+C...gamma -> q + qbar, g + g.
+ ELSEIF(K(N+1,2).EQ.22) THEN
+ ID1=IS(JT)
+ ID2=IT
+ IM1=ID2
+ IM2=ID1
+C...q -> q + g.
+ ELSEIF(K(N+1,2).GT.0.AND.K(N+1,2).NE.21.AND.K(IT,2).EQ.21) THEN
+ ID1=IT
+ ID2=IS(JT)
+C...q -> g + q.
+ ELSEIF(K(N+1,2).GT.0.AND.K(N+1,2).NE.21) THEN
+ ID1=IS(JT)
+ ID2=IT
+C...qbar -> qbar + g.
+ ELSEIF(K(N+1,2).LT.0.AND.K(IT,2).EQ.21) THEN
+ ID1=IS(JT)
+ ID2=IT
+C...qbar -> g + qbar.
+ ELSEIF(K(N+1,2).LT.0) THEN
+ ID1=IT
+ ID2=IS(JT)
+C...g -> g + g; g -> q + qbar.
+ ELSEIF((K(IT,2).EQ.21.AND.PYR(0).GT.0.5D0).OR.K(IT,2).LT.0) THEN
+ ID1=IS(JT)
+ ID2=IT
+ ELSE
+ ID1=IT
+ ID2=IS(JT)
+ ENDIF
+ IF(IM1.EQ.N+1) K(IM1,4)=K(IM1,4)+ID1
+ IF(IM2.EQ.N+1) K(IM2,5)=K(IM2,5)+ID2
+ K(ID1,4)=K(ID1,4)+MSTU(5)*IM1
+ K(ID2,5)=K(ID2,5)+MSTU(5)*IM2
+ IF(ID1.NE.ID2) THEN
+ K(ID1,5)=K(ID1,5)+MSTU(5)*ID2
+ K(ID2,4)=K(ID2,4)+MSTU(5)*ID1
+ ENDIF
+ N=N+1
+ IF(K(IT,1).EQ.1) THEN
+ K(IT,4)=0
+ K(IT,5)=0
+ ENDIF
+
+C...Boost to new CM-frame.
+ DBSVX=(P(N,1)+P(IS(JR),1))/(P(N,4)+P(IS(JR),4))
+ DBSVZ=(P(N,3)+P(IS(JR),3))/(P(N,4)+P(IS(JR),4))
+ IF(DBSVX**2+DBSVZ**2.GE.1D0) GOTO 100
+ CALL PYROBO(NS+1,N,0D0,0D0,-DBSVX,0D0,-DBSVZ)
+ IR=N+(JT-1)*(IS(1)-N)
+ CALL PYROBO(NS+1,N,-PYANGL(P(IR,3),P(IR,1)),DPHI(JT),
+ & 0D0,0D0,0D0)
+
+C...Global statistics.
+ MINT(352)=MINT(352)+1
+ VINT(352)=VINT(352)+SQRT(P(IT,1)**2+P(IT,2)**2)
+ IF (MINT(352).EQ.1) VINT(357)=SQRT(P(IT,1)**2+P(IT,2)**2)
+ ENDIF
+
+C...Update kinematics variables.
+ IS(JT)=N
+ DQ2(JT)=Q2B
+ IF(MSTP(62).GE.3.AND.NTRY2.LT.200.AND.MCE.EQ.1) THE2(JT)=THE2T
+ DSH=DSHZ
+
+C...Save quantities; loop back.
+ Q2S(JT)=Q2B
+ DPHI(JT)=PHIBR
+ MCESV(JT)=MCE
+ IF((MCEV.EQ.1.AND.Q2B.GE.0.25D0*Q2MNC).OR.
+ &(MEEV.EQ.1.AND.Q2B.GE.Q2MNE)) THEN
+ KFLS(JT+2)=KFLS(JT)
+ KFLS(JT)=KFLA
+ XS(JT)=XA
+ ZS(JT)=Z
+ DO 310 KFL=-25,25
+ XFS(JT,KFL)=XFA(KFL)
+ 310 CONTINUE
+ TEVCSV(JT)=TEVCB
+ TEVESV(JT)=TEVEB
+ ELSE
+ MORE(JT)=0
+ IF(JT.EQ.1) IPU1=N
+ IF(JT.EQ.2) IPU2=N
+ ENDIF
+ IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYSSPA:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) N=NS
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IF(MORE(1).EQ.1.OR.MORE(2).EQ.1) GOTO 150
+
+C...Boost hard scattering partons to frame of shower initiators.
+ DO 320 J=1,3
+ ROBO(J+2)=(P(NS+1,J)+P(NS+2,J))/(P(NS+1,4)+P(NS+2,4))
+ 320 CONTINUE
+ K(N+2,1)=1
+ DO 330 J=1,5
+ P(N+2,J)=P(NS+1,J)
+ 330 CONTINUE
+ CALL PYROBO(N+2,N+2,0D0,0D0,-ROBO(3),-ROBO(4),-ROBO(5))
+ ROBO(2)=PYANGL(P(N+2,1),P(N+2,2))
+ ROBO(1)=PYANGL(P(N+2,3),SQRT(P(N+2,1)**2+P(N+2,2)**2))
+ IMIN=MINT(83)+5
+ IF(MINT(31).GE.2) IMIN=MIN(IPUS1,IPUS2)
+ CALL PYROBO(IMIN,NS,0D0,-ROBO(2),0D0,0D0,0D0)
+ CALL PYROBO(IMIN,NS,ROBO(1),ROBO(2),ROBO(3),ROBO(4),ROBO(5))
+
+C...Store user information. Reset Lambda value.
+ IF(MINT(31).LE.1) THEN
+ K(IPU1,3)=MINT(83)+3
+ K(IPU2,3)=MINT(83)+4
+ ELSE
+ K(IPU1,3)=MINT(83)+1
+ K(IPU2,3)=MINT(83)+2
+ ENDIF
+ DO 340 JT=1,2
+ MINT(12+JT)=KFLS(JT)
+ VINT(140+JT)=XS(JT)
+ IF(MINT(18+JT).EQ.1) VINT(140+JT)=VINT(154+JT)*XS(JT)
+ IF(MINT(31).GE.2) VINT(140+JT)=VINT(140+JT)*VINT(142+JT)
+ 340 CONTINUE
+ PARU(112)=ALAMS
+
+ RETURN
+ END
+C*********************************************************************
+
+C...PYPTIS
+C...Generates pT-ordered spacelike initial-state parton showers and
+C...trial joinings.
+C...MODE=-1: Initialize ISR from scratch, starting from the hardest
+C... interaction initiators at PT2NOW.
+C...MODE= 0: Generate a trial branching on interaction MINT(36), side
+C... MINT(30). Start evolution at PT2NOW, solve Sudakov for PT2.
+C... Store in /PYISMX/ if PT2 is largest so far. Abort if PT2
+C... is below PT2CUT.
+C... (Also generate test joinings if MSTP(96)=1.)
+C...MODE= 1: Accept stored shower branching. Update event record etc.
+C...PT2NOW : Starting (max) PT2 scale for evolution.
+C...PT2CUT : Lower limit for evolution.
+C...PT2 : Result of evolution. Generated PT2 for trial emission.
+C...IFAIL : Status return code. IFAIL=0 when all is well.
+
+ SUBROUTINE PYPTIS(MODE,PT2NOW,PT2CUT,PT2,IFAIL)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement for maximum size of showers.
+ PARAMETER (MAXNUR=1000)
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ COMMON/PYISMX/MIMX,JSMX,KFLAMX,KFLCMX,KFBEAM(2),NISGEN(2,240),
+ & PT2MX,PT2AMX,ZMX,RM2CMX,Q2BMX,PHIMX
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYISJN/MJN1MX,MJN2MX,MJOIND(2,240)
+ SAVE /PYPART/,/PYJETS/,/PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,
+ & /PYINT2/,/PYINTM/,/PYISMX/,/PYCTAG/,/PYISJN/
+C...Local variables
+ DIMENSION ZSAV(2,240),PT2SAV(2,240),
+ & XFB(-25:25),XFA(-25:25),XFN(-25:25),XFJ(-25:25),
+ & WTAP(-25:25),WTPDF(-25:25),SHTNOW(240),
+ & WTAPJ(240),WTPDFJ(240),X1(240),Y(240)
+ SAVE ZSAV,PT2SAV,XFB,XFA,XFN,WTAP,WTPDF,XMXC,SHTNOW,
+ & RMB2,RMC2,ALAM3,ALAM4,ALAM5,TMIN,PTEMAX,WTEMAX,AEM2PI
+C...For check on excessive weights.
+ CHARACTER CHWT*12
+
+C...Only give errors for very large weights, otherwise just warnings
+ DATA WTEMAX /1.5D0/
+C...Only give errors for large pT, otherwise just warnings
+ DATA PTEMAX /5D0/
+
+ IFAIL=-1
+
+C----------------------------------------------------------------------
+C...MODE=-1: Initialize initial state showers from scratch, i.e.
+C...starting from the hardest interaction initiators.
+ IF (MODE.EQ.-1) THEN
+C...Set hard scattering SHAT.
+ SHTNOW(1)=VINT(44)
+C...Mass thresholds and Lambda for QCD evolution.
+ AEM2PI=PARU(101)/PARU(2)
+ RMB=PMAS(5,1)
+ RMC=PMAS(4,1)
+ ALAM4=PARP(61)
+ IF(MSTU(112).LT.4) ALAM4=PARP(61)*(PARP(61)/RMC)**(2D0/25D0)
+ IF(MSTU(112).GT.4) ALAM4=PARP(61)*(RMB/PARP(61))**(2D0/25D0)
+ ALAM5=ALAM4*(ALAM4/RMB)**(2D0/23D0)
+ ALAM3=ALAM4*(RMC/ALAM4)**(2D0/27D0)
+ RMB2=RMB**2
+ RMC2=RMC**2
+C...Massive quark forced creation threshold (in M**2).
+ TMIN=1.01D0
+C...Set upper limit for X (ensures some X left for beam remnant).
+ XMXC=1D0-2D0*PARP(111)/VINT(1)
+
+ IF (MSTP(61).GE.1) THEN
+C...Initial values: flavours, momenta, virtualities.
+ DO 100 JS=1,2
+ NISGEN(JS,1)=0
+
+C...Special kinematics check for c/b quarks (that g -> c cbar or
+C...b bbar kinematically possible).
+ KFLB=K(IMI(JS,1,1),2)
+ KFLCB=IABS(KFLB)
+ IF(KFBEAM(JS).NE.22.AND.(KFLCB.EQ.4.OR.KFLCB.EQ.5)) THEN
+C...Check PT2MAX > mQ^2
+ IF (VINT(56).LT.1.05D0*PMAS(PYCOMP(KFLCB),1)**2) THEN
+ CALL PYERRM(9,'(PYPTIS:) PT2MAX < 1.05 * MQ**2. '//
+ & 'No Q creation possible.')
+ MINT(51)=1
+ RETURN
+ ELSE
+C...Check for physical z values (m == MQ / sqrt(s))
+C...For creation diagram, x < z < (1-m)/(1+m(1-m))
+ FMQ=PMAS(KFLCB,1)/SQRT(SHTNOW(1))
+ ZMXCR=(1D0-FMQ)/(1D0+FMQ*(1D0-FMQ))
+ IF (XMI(JS,1).GT.0.9D0*ZMXCR) THEN
+ CALL PYERRM(9,'(PYPTIS:) No physical z value for '//
+ & 'Q creation.')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+ ENDIF
+
+ MINT(354)=0
+C...Zero joining array
+ DO 110 MJ=1,240
+ MJOIND(1,MJ)=0
+ MJOIND(2,MJ)=0
+ 110 CONTINUE
+
+C----------------------------------------------------------------------
+C...MODE= 0: Generate a trial branching on interaction MINT(36) side
+C...MINT(30). Store if emission PT2 scale is largest so far.
+C...Also generate test joinings if MSTP(96)=1.
+ ELSEIF(MODE.EQ.0) THEN
+ IFAIL=-1
+ MECOR=0
+ ISUB=MINT(1)
+ JS=MINT(30)
+C...No shower for structureless beam
+ IF (MINT(44+JS).EQ.1) RETURN
+ MI=MINT(36)
+ SHAT=VINT(44)
+C...Absolute shower max scale = VINT(56)
+ PT2=MIN(PT2NOW,VINT(56))
+ IF (NISGEN(1,MI).EQ.0.AND.NISGEN(2,MI).EQ.0) SHTNOW(MI)=SHAT
+C...Define for which processes ME corrections have been implemented.
+ IF(MSTP(68).EQ.1.OR.MSTP(68).EQ.3) THEN
+ IF(ISUB.EQ.1.OR.ISUB.EQ.2.OR.ISUB.EQ.141.OR.ISUB.EQ
+ & .142.OR.ISUB.EQ.144) MECOR=1
+ IF(ISUB.EQ.102.OR.ISUB.EQ.152.OR.ISUB.EQ.157) MECOR=2
+ IF(ISUB.EQ.3.OR.ISUB.EQ.151.OR.ISUB.EQ.156) MECOR=3
+C...Calculate preweighting factor for ME-corrected processes.
+ IF(MECOR.GE.1) CALL PYMEMX(MECOR,WTFF,WTGF,WTFG,WTGG)
+ ENDIF
+C...Basic info on daughter for which to find mother.
+ KFLB=K(IMI(JS,MI,1),2)
+ KFLBA=IABS(KFLB)
+C...KSVCB: -1 for sea or first companion, 0 for valence or gluon, >1 for
+C...second companion.
+ KSVCB=MAX(-1,IMI(JS,MI,2))
+C...Treat "first" companion of a pair like an ordinary sea quark
+C...(except that creation diagram is not allowed)
+ IF(IMI(JS,MI,2).GT.IMISEP(MI)) KSVCB=-1
+C...X (rescaled to [0,1])
+ XB=XMI(JS,MI)/VINT(142+JS)
+C...Massive quarks (use physical masses.)
+ RMQ2=0D0
+ MQMASS=0
+ IF (KFLBA.EQ.4.OR.KFLBA.EQ.5) THEN
+ RMQ2=RMC2
+ IF (KFLBA.EQ.5) RMQ2=RMB2
+C...Special threshold treatment for non-photon beams
+ IF (KFBEAM(JS).NE.22) MQMASS=KFLBA
+ ENDIF
+
+C...Flags for parton distribution calls.
+ MINT(105)=MINT(102+JS)
+ MINT(109)=MINT(106+JS)
+ VINT(120)=VINT(2+JS)
+
+C...Calculate initial parton distribution weights.
+ IF(XB.GE.XMXC) THEN
+ RETURN
+ ELSEIF(MQMASS.EQ.0) THEN
+ CALL PYPDFU(KFBEAM(JS),XB,PT2,XFB)
+ ELSE
+C...Initialize massive quark PT2 dependent pdf underestimate.
+ PT20=PT2
+ CALL PYPDFU(KFBEAM(JS),XB,PT20,XFB)
+C.!.Tentative treatment of massive valence quarks.
+ XQ0=MAX(1D-10,XPSVC(KFLB,KSVCB))
+ XG0=XFB(21)
+ TPM0=LOG(PT20/RMQ2)
+ WPDF0=TPM0*XG0/XQ0
+ ENDIF
+ IF (KFLBA.LE.6) THEN
+C...For quarks, only include respective sea, val, or cmp part.
+ IF (KSVCB.LE.0) THEN
+ XFB(KFLB)=XPSVC(KFLB,KSVCB)
+ ELSE
+C...Find companion's companion
+ MISEA=0
+ 120 MISEA=MISEA+1
+ IF (IMI(JS,MISEA,2).NE.IMI(JS,MI,1)) GOTO 120
+ XS=XMI(JS,MISEA)
+ XREM=VINT(142+JS)
+ YS=XS/(XREM+XS)
+C...Momentum fraction of the companion quark.
+C...Rescale from XB = x/XREM to YB = x/(1-Sum_rest) -> factor (1-YS).
+ YB=XB*(1D0-YS)
+ XFB(KFLB)=PYFCMP(YB/VINT(140),YS/VINT(140),MSTP(87))
+ ENDIF
+ ENDIF
+
+C...Determine overestimated z range: switch at c and b masses.
+ 130 IF (PT2.GT.TMIN*RMB2) THEN
+ IZRG=3
+ PT2MNE=MAX(TMIN*RMB2,PT2CUT)
+ B0=23D0/6D0
+ ALAM2=ALAM5**2
+ ELSEIF(PT2.GT.TMIN*RMC2) THEN
+ IZRG=2
+ PT2MNE=MAX(TMIN*RMC2,PT2CUT)
+ B0=25D0/6D0
+ ALAM2=ALAM4**2
+ ELSE
+ IZRG=1
+ PT2MNE=PT2CUT
+ B0=27D0/6D0
+ ALAM2=ALAM3**2
+ ENDIF
+C...Divide Lambda by PARP(64) (equivalent to mult pT2 by PARP(64))
+ ALAM2=ALAM2/PARP(64)
+C...Overestimated ZMAX:
+ IF (MQMASS.EQ.0) THEN
+C...Massless
+ ZMAX=1D0-0.5D0*(PT2MNE/SHTNOW(MI))*(SQRT(1D0+4D0*SHTNOW(MI)
+ & /PT2MNE)-1D0)
+ ELSE
+C...Massive (limit for bremsstrahlung diagram > creation)
+ FMQ=SQRT(RMQ2/SHTNOW(MI))
+ ZMAX=1D0/(1D0+FMQ)
+ ENDIF
+ ZMIN=XB/XMXC
+
+C...If kinematically impossible then do not evolve.
+ IF(PT2.LT.PT2CUT.OR.ZMAX.LE.ZMIN) RETURN
+
+C...Reset Altarelli-Parisi and PDF weights.
+ DO 140 KFL=-5,5
+ WTAP(KFL)=0D0
+ WTPDF(KFL)=0D0
+ 140 CONTINUE
+ WTAP(21)=0D0
+ WTPDF(21)=0D0
+C...Zero joining weights and compute X(partner) and X(mother) values.
+ IF (MSTP(96).NE.0) THEN
+ NJN=0
+ DO 150 MJ=1,MINT(31)
+ WTAPJ(MJ)=0D0
+ WTPDFJ(MJ)=0D0
+ X1(MJ)=XMI(JS,MJ)/(VINT(142+JS)+XMI(JS,MJ))
+ Y(MJ)=(XMI(JS,MI)+XMI(JS,MJ))/(VINT(142+JS)+XMI(JS,MJ)
+ & +XMI(JS,MI))
+ 150 CONTINUE
+ ENDIF
+
+C...Approximate Altarelli-Parisi weights (integrated AP dz).
+C...q -> q, g -> q or q -> q + gamma (already set which).
+ IF(KFLBA.LE.5) THEN
+C...Val and cmp quarks get an extra sqrt(z) to smooth their bumps.
+ IF (KSVCB.LT.0) THEN
+ WTAP(KFLB)=(8D0/3D0)*LOG((1D0-ZMIN)/(1D0-ZMAX))
+ ELSE
+ RMIN=(1+SQRT(ZMIN))/(1-SQRT(ZMIN))
+ RMAX=(1+SQRT(ZMAX))/(1-SQRT(ZMAX))
+ WTAP(KFLB)=(8D0/3D0)*LOG(RMAX/RMIN)
+ ENDIF
+ WTAP(21)=0.5D0*(ZMAX-ZMIN)
+ WTAPE=(2D0/9D0)*LOG((1D0-ZMIN)/(1D0-ZMAX))
+ IF(MOD(KFLBA,2).EQ.0) WTAPE=4D0*WTAPE
+ IF(MECOR.GE.1.AND.NISGEN(JS,MI).EQ.0) THEN
+ WTAP(KFLB)=WTFF*WTAP(KFLB)
+ WTAP(21)=WTGF*WTAP(21)
+ WTAPE=WTFF*WTAPE
+ ENDIF
+ IF (KSVCB.GE.1) THEN
+C...Kill normal creation but add joining diagrams for cmp quark.
+ WTAP(21)=0D0
+ IF (KFLBA.EQ.4.OR.KFLBA.EQ.5) THEN
+ CALL PYERRM(9,'(PYPTIS:) Sorry, I got a heavy companion'//
+ & " quark here. Not handled yet, giving up!")
+ PT2=0D0
+ MINT(51)=1
+ RETURN
+ ENDIF
+C...Check for possible joinings
+ IF (MSTP(96).NE.0.AND.MJOIND(JS,MI).EQ.0) THEN
+C...Find companion's companion.
+ MJ=0
+ 160 MJ=MJ+1
+ IF (IMI(JS,MJ,2).NE.IMI(JS,MI,1)) GOTO 160
+ IF (MJOIND(JS,MJ).EQ.0) THEN
+ Y(MI)=YB+YS
+ Z=YB/Y(MI)
+ WTAPJ(MJ)=Z*(1D0-Z)*0.5D0*(Z**2+(1D0-Z)**2)
+ IF (WTAPJ(MJ).GT.1D-6) THEN
+ NJN=1
+ ELSE
+ WTAPJ(MJ)=0D0
+ ENDIF
+ ENDIF
+C...Add trial gluon joinings.
+ DO 170 MJ=1,MINT(31)
+ KFLC=K(IMI(JS,MJ,1),2)
+ IF (KFLC.NE.21.OR.MJOIND(JS,MJ).NE.0) GOTO 170
+ Z=XMI(JS,MJ)/(XMI(JS,MI)+XMI(JS,MJ))
+ WTAPJ(MJ)=6D0*(Z**2+(1D0-Z)**2)
+ IF (WTAPJ(MJ).GT.1D-6) THEN
+ NJN=NJN+1
+ ELSE
+ WTAPJ(MJ)=0D0
+ ENDIF
+ 170 CONTINUE
+ ENDIF
+ ELSEIF (IMI(JS,MI,2).GE.0) THEN
+C...Kill creation diagram for val quarks and sea quarks with companions.
+ WTAP(21)=0D0
+ ELSEIF (MQMASS.EQ.0) THEN
+C...Extra safety factor for massless sea quark creation.
+ WTAP(21)=WTAP(21)*1.25D0
+ ENDIF
+
+C... q -> g, g -> g.
+ ELSEIF(KFLB.EQ.21) THEN
+C...Here we decide later whether a quark picked up is valence or
+C...sea, so we maintain the extra factor sqrt(z) since we deal
+C...with the *sum* of sea and valence in this context.
+ WTAPQ=(16D0/3D0)*(SQRT(1D0/ZMIN)-SQRT(1D0/ZMAX))
+C...new: do not allow backwards evol to pick up heavy flavour.
+ DO 180 KFL=1,MIN(3,MSTP(58))
+ WTAP(KFL)=WTAPQ
+ WTAP(-KFL)=WTAPQ
+ 180 CONTINUE
+ WTAP(21)=6D0*LOG(ZMAX*(1D0-ZMIN)/(ZMIN*(1D0-ZMAX)))
+ IF(MECOR.GE.1.AND.NISGEN(JS,MI).EQ.0) THEN
+ WTAPQ=WTFG*WTAPQ
+ WTAP(21)=WTGG*WTAP(21)
+ ENDIF
+C...Check for possible joinings (companions handled separately above)
+ IF (MSTP(96).NE.0.AND.MINT(31).GE.2.AND.MJOIND(JS,MI).EQ.0)
+ & THEN
+ DO 190 MJ=1,MINT(31)
+ IF (MJ.EQ.MI.OR.MJOIND(JS,MJ).NE.0) GOTO 190
+ KSVCC=IMI(JS,MJ,2)
+ IF (IMI(JS,MJ,2).GT.IMISEP(MJ)) KSVCC=-1
+ IF (KSVCC.GE.1) GOTO 190
+ KFLC=K(IMI(JS,MJ,1),2)
+C...Only try g -> g + g once.
+ IF (MJ.GT.MI.AND.KFLC.EQ.21) GOTO 190
+ Z=XMI(JS,MJ)/(XMI(JS,MI)+XMI(JS,MJ))
+ IF (KFLC.EQ.21) THEN
+ WTAPJ(MJ)=6D0*(Z**2+(1D0-Z)**2)
+ ELSE
+ WTAPJ(MJ)=Z*4D0/3D0*(1D0+Z**2)
+ ENDIF
+ IF (WTAPJ(MJ).GT.1D-6) THEN
+ NJN=NJN+1
+ ELSE
+ WTAPJ(MJ)=0D0
+ ENDIF
+ 190 CONTINUE
+ ENDIF
+ ENDIF
+
+C...Initialize massive quark evolution
+ IF (MQMASS.NE.0) THEN
+ RML=(RMQ2+VINT(18))/ALAM2
+ TML=LOG(RML)
+ TPL=LOG((PT2+VINT(18))/ALAM2)
+ TPM=LOG((PT2+VINT(18))/RMQ2)
+ WN=WTAP(21)*WPDF0/B0
+ ENDIF
+
+
+C...Loopback point for iteration
+ NTRY=0
+ NTHRES=0
+ 200 NTRY=NTRY+1
+ IF(NTRY.GT.500) THEN
+ CALL PYERRM(9,'(PYPTIS:) failed to evolve shower.')
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C... Calculate PDF weights and sum for evolution rate.
+ WTSUM=0D0
+ XFBO=MAX(1D-10,XFB(KFLB))
+ DO 210 KFL=-5,5
+ WTPDF(KFL)=XFB(KFL)/XFBO
+ WTSUM=WTSUM+WTAP(KFL)*WTPDF(KFL)
+ 210 CONTINUE
+C...Only add gluon mother diagram for massless KFLB.
+ IF(MQMASS.EQ.0) THEN
+ WTPDF(21)=XFB(21)/XFBO
+ WTSUM=WTSUM+WTAP(21)*WTPDF(21)
+ ENDIF
+ WTSUM=MAX(0.0001D0,WTSUM)
+ WTSUMS=WTSUM
+C...Add joining diagrams where applicable.
+ WTJOIN=0D0
+ IF (MSTP(96).NE.0.AND.NJN.NE.0) THEN
+ DO 220 MJ=1,MINT(31)
+ IF (WTAPJ(MJ).LT.1D-3) GOTO 220
+ WTPDFJ(MJ)=1D0/XFBO
+C...x and x*pdf (+ sea/val) for parton C.
+ KFLC=K(IMI(JS,MJ,1),2)
+ KFLCA=IABS(KFLC)
+ KSVCC=MAX(-1,IMI(JS,MJ,2))
+ IF (IMI(JS,MJ,2).GT.IMISEP(MJ)) KSVCC=-1
+ MINT(30)=JS
+ MINT(36)=MJ
+ CALL PYPDFU(KFBEAM(JS),X1(MJ),PT2,XFJ)
+ MINT(36)=MI
+ IF (KFLCA.LE.6.AND.KSVCC.LE.0) THEN
+ XFJ(KFLC)=XPSVC(KFLC,KSVCC)
+ ELSEIF (KSVCC.GE.1) THEN
+ print*, 'error! parton C is companion!'
+ ENDIF
+ WTPDFJ(MJ)=WTPDFJ(MJ)/XFJ(KFLC)
+C...x and x*pdf (+ sea/val) for parton A.
+ KFLA=21
+ KSVCA=0
+ IF (KFLCA.EQ.21.AND.KFLBA.LE.5) THEN
+ KFLA=KFLB
+ KSVCA=KSVCB
+ ELSEIF (KFLBA.EQ.21.AND.KFLCA.LE.5) THEN
+ KFLA=KFLC
+ KSVCA=KSVCC
+ ENDIF
+ MINT(30)=JS
+ IF (KSVCA.LE.0) THEN
+C...Consider C the "evolved" parton if B is gluon. Val/sea
+C...counting will then be done correctly in PYPDFU.
+ IF (KFLBA.EQ.21) MINT(36)=MJ
+ CALL PYPDFU(KFBEAM(JS),Y(MJ),PT2,XFJ)
+ MINT(36)=MI
+ IF (IABS(KFLA).LE.6) XFJ(KFLA)=XPSVC(KFLA,KSVCA)
+ ELSE
+C...If parton A is companion, use Y(MI) and YS in call to PYFCMP.
+ XFJ(KFLA)=PYFCMP(Y(MI)/VINT(140),YS/VINT(140),MSTP(87))
+ ENDIF
+ WTPDFJ(MJ)=XFJ(KFLA)*WTPDFJ(MJ)
+ WTJOIN=WTJOIN+WTAPJ(MJ)*WTPDFJ(MJ)
+ 220 CONTINUE
+ ENDIF
+
+C...Pick normal pT2 (in overestimated z range).
+ 230 PT2OLD=PT2
+ WTSUM=WTSUMS
+ PT2=ALAM2*((PT2+VINT(18))/ALAM2)**(PYR(0)**(B0/WTSUM))-VINT(18)
+ KFLC=21
+
+C...Evolve q -> q gamma separately, pick it if larger pT.
+ IF(KFLBA.LE.5) THEN
+ PT2QED=(PT2OLD+VINT(18))*PYR(0)**(1D0/(AEM2PI*WTAPE))-VINT(18)
+ IF(PT2QED.GT.PT2) THEN
+ PT2=PT2QED
+ KFLC=22
+ KFLA=KFLB
+ ENDIF
+ ENDIF
+
+C... Evolve massive quark creation separately.
+ MCRQQ=0
+ IF (MQMASS.NE.0) THEN
+ PT2CR=(RMQ2+VINT(18))*(RML**(TPM/(TPL*PYR(0)**(-TML/WN)-TPM)))
+ & -VINT(18)
+C... Ensure mininimum PT2CR and force creation near threshold.
+ IF (PT2CR.LT.TMIN*RMQ2) THEN
+ NTHRES=NTHRES+1
+ IF (NTHRES.GT.50) THEN
+ CALL PYERRM(9,'(PYPTIS:) no phase space left for '//
+ & 'massive quark creation. Gave up trying.')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ PT2=0D0
+ PT2CR=TMIN*RMQ2
+ MCRQQ=2
+ ENDIF
+C... Select largest PT2 (brems or creation):
+ IF (PT2CR.GT.PT2) THEN
+ MCRQQ=MAX(MCRQQ,1)
+ WTSUM=0D0
+ PT2=PT2CR
+ KFLA=21
+ ELSE
+ MCRQQ=0
+ KFLA=KFLB
+ ENDIF
+C... Compute logarithms for this PT2
+ TPL=LOG((PT2+VINT(18))/ALAM2)
+ TPM=LOG((PT2+VINT(18))/(RMQ2+VINT(18)))
+ WTCRQQ=TPM/LOG(PT2/RMQ2)
+ ENDIF
+
+C...Evolve joining separately
+ MJOIN=0
+ IF (MSTP(96).NE.0.AND.NJN.NE.0) THEN
+ PT2JN=ALAM2*((PT2OLD+VINT(18))/ALAM2)**(PYR(0)**(B0/WTJOIN))
+ & -VINT(18)
+ IF (PT2JN.GE.PT2) THEN
+ MJOIN=1
+ PT2=PT2JN
+ ENDIF
+ ENDIF
+
+C...Loopback if crossed c/b mass thresholds.
+ IF(IZRG.EQ.3.AND.PT2.LT.RMB2) THEN
+ PT2=RMB2
+ GOTO 130
+ ELSEIF(IZRG.EQ.2.AND.PT2.LT.RMC2) THEN
+ PT2=RMC2
+ GOTO 130
+ ENDIF
+
+C...Speed up shower. Skip if higher-PT acceptable branching
+C...already found somewhere else.
+C...Also finish if below lower cutoff.
+
+ IF (PT2.LT.PT2MX.OR.PT2.LT.PT2CUT) RETURN
+
+C...Select parton A flavour (massive Q handled above.)
+ IF (MQMASS.EQ.0.AND.KFLC.NE.22.AND.MJOIN.EQ.0) THEN
+ WTRAN=PYR(0)*WTSUM
+ KFLA=-6
+ 240 KFLA=KFLA+1
+ WTRAN=WTRAN-WTAP(KFLA)*WTPDF(KFLA)
+ IF(KFLA.LE.5.AND.WTRAN.GT.0D0) GOTO 240
+ IF(KFLA.EQ.6) KFLA=21
+ ELSEIF (MJOIN.EQ.1) THEN
+C...Tentative joining accept/reject.
+ WTRAN=PYR(0)*WTJOIN
+ MJ=0
+ 250 MJ=MJ+1
+ WTRAN=WTRAN-WTAPJ(MJ)*WTPDFJ(MJ)
+ IF(MJ.LE.MINT(31)-1.AND.WTRAN.GT.0D0) GOTO 250
+ IF(MJOIND(JS,MJ).NE.0.OR.MJOIND(JS,MI).NE.0) THEN
+ CALL PYERRM(9,'(PYPTIS:) Attempted double joining.'//
+ & ' Rejected.')
+ GOTO 230
+ ENDIF
+C...x*pdf (+ sea/val) at new pT2 for parton B.
+ IF (KSVCB.LE.0) THEN
+ MINT(30)=JS
+ CALL PYPDFU(KFBEAM(JS),XB,PT2,XFB)
+ IF (KFLBA.LE.6) XFB(KFLB)=XPSVC(KFLB,KSVCB)
+ ELSE
+C...Companion distributions do not evolve.
+ XFB(KFLB)=XFBO
+ ENDIF
+ WTVETO=1D0/WTPDFJ(MJ)/XFB(KFLB)
+ KFLC=K(IMI(JS,MJ,1),2)
+ KFLCA=IABS(KFLC)
+ KSVCC=MAX(-1,IMI(JS,MJ,2))
+ IF (KSVCB.GE.1) KSVCC=-1
+C...x*pdf (+ sea/val) at new pT2 for parton C.
+ MINT(30)=JS
+ MINT(36)=MJ
+ CALL PYPDFU(KFBEAM(JS),X1(MJ),PT2,XFJ)
+ MINT(36)=MI
+ IF (KFLCA.LE.6.AND.KSVCC.LE.0) XFJ(KFLC)=XPSVC(KFLC,KSVCC)
+ WTVETO=WTVETO/XFJ(KFLC)
+C...x and x*pdf (+ sea/val) at new pT2 for parton A.
+ KFLA=21
+ KSVCA=0
+ IF (KFLCA.EQ.21.AND.KFLBA.LE.5) THEN
+ KFLA=KFLB
+ KSVCA=KSVCB
+ ELSEIF (KFLBA.EQ.21.AND.KFLCA.LE.5) THEN
+ KFLA=KFLC
+ KSVCA=KSVCC
+ ENDIF
+ IF (KSVCA.LE.0) THEN
+ MINT(30)=JS
+ IF (KFLB.EQ.21) MINT(36)=MJ
+ CALL PYPDFU(KFBEAM(JS),Y(MJ),PT2,XFJ)
+ MINT(36)=MI
+ IF (IABS(KFLA).LE.6) XFJ(KFLA)=XPSVC(KFLA,KSVCA)
+ ELSE
+ XFJ(KFLA)=PYFCMP(Y(MJ)/VINT(140),YS/VINT(140),MSTP(87))
+ ENDIF
+ WTVETO=WTVETO*XFJ(KFLA)
+C...Monte Carlo veto.
+ IF (WTVETO.LT.PYR(0)) GOTO 200
+C...If accept, save PT2 of this joining.
+ IF (PT2.GT.PT2MX) THEN
+ PT2MX=PT2
+ JSMX=2+JS
+ MJN1MX=MJ
+ MJN2MX=MI
+ WTAPJ(MJ)=0D0
+ NJN=0
+ ENDIF
+C...Exit and continue evolution.
+ GOTO 380
+ ENDIF
+ KFLAA=IABS(KFLA)
+
+C...Choose z value (still in overestimated range) and corrective weight.
+C...Unphysical z will be rejected below when Q2 has is computed.
+ WTZ=0D0
+
+C...Note: ME and MQ>0 give corrections to overall weights, not shapes.
+C...q -> q + g or q -> q + gamma (already set which).
+ IF (KFLAA.LE.5.AND.KFLBA.LE.5) THEN
+ IF (KSVCB.LT.0) THEN
+ Z=1D0-(1D0-ZMIN)*((1D0-ZMAX)/(1D0-ZMIN))**PYR(0)
+ ELSE
+ ZFAC=RMIN*(RMAX/RMIN)**PYR(0)
+ Z=((1-ZFAC)/(1+ZFAC))**2
+ ENDIF
+ WTZ=0.5D0*(1D0+Z**2)
+C...Massive weight correction.
+ IF (KFLBA.GE.4) WTZ=WTZ-Z*(1D0-Z)**2*RMQ2/PT2
+C...Valence quark weight correction (extra sqrt)
+ IF (KSVCB.GE.0) WTZ=WTZ*SQRT(Z)
+
+C...q -> g + q.
+C...NB: MQ>0 not yet implemented. Forced absent above.
+ ELSEIF (KFLAA.LE.5.AND.KFLB.EQ.21) THEN
+ KFLC=KFLA
+ Z=ZMAX/(1D0+PYR(0)*(SQRT(ZMAX/ZMIN)-1D0))**2
+ WTZ=0.5D0*(1D0+(1D0-Z)**2)*SQRT(Z)
+
+C...g -> q + qbar.
+ ELSEIF (KFLA.EQ.21.AND.KFLBA.LE.5) THEN
+ KFLC=-KFLB
+ Z=ZMIN+PYR(0)*(ZMAX-ZMIN)
+ WTZ=Z**2+(1D0-Z)**2
+C...Massive correction
+ IF (MQMASS.NE.0) THEN
+ WTZ=WTZ+2D0*Z*(1D0-Z)*RMQ2/PT2
+C...Extra safety margin for light sea quark creation
+ ELSEIF (KSVCB.LT.0) THEN
+ WTZ=WTZ/1.25D0
+ ENDIF
+
+C...g -> g + g.
+ ELSEIF (KFLA.EQ.21.AND.KFLB.EQ.21) THEN
+ KFLC=21
+ Z=1D0/(1D0+((1D0-ZMIN)/ZMIN)*((1D0-ZMAX)*ZMIN/
+ & (ZMAX*(1D0-ZMIN)))**PYR(0))
+ WTZ=(1D0-Z*(1D0-Z))**2
+ ENDIF
+
+C...Derive Q2 from pT2.
+ Q2B=PT2/(1D0-Z)
+ IF (KFLBA.GE.4) Q2B=Q2B-RMQ2
+
+C...Loopback if outside allowed z range for given pT2.
+ RM2C=PYMASS(KFLC)**2
+ PT2ADJ=Q2B-Z*(SHTNOW(MI)+Q2B)*(Q2B+RM2C)/SHTNOW(MI)
+ IF (PT2ADJ.LT.1D-6) GOTO 230
+
+C...Loopback if nonordered in angle/rapidity.
+ IF (MSTP(62).GE.3.AND.NISGEN(JS,MI).GE.1) THEN
+ IF(PT2.GT.((1D0-Z)/(Z*(1D0-ZSAV(JS,MI))))**2*PT2SAV(JS,MI))
+ & GOTO 230
+ ENDIF
+
+C...Select phi angle of branching at random.
+ PHI=PARU(2)*PYR(0)
+
+C...Matrix-element corrections for some processes.
+ IF (MECOR.GE.1.AND.NISGEN(JS,MI).EQ.0) THEN
+ IF (KFLAA.LE.20.AND.KFLBA.LE.20) THEN
+ CALL PYMEWT(MECOR,1,Q2B*SHAT/SHTNOW(MI),Z,PHI,WTME)
+ WTZ=WTZ*WTME/WTFF
+ ELSEIF((KFLA.EQ.21.OR.KFLA.EQ.22).AND.KFLBA.LE.20) THEN
+ CALL PYMEWT(MECOR,2,Q2B*SHAT/SHTNOW(MI),Z,PHI,WTME)
+ WTZ=WTZ*WTME/WTGF
+ ELSEIF(KFLAA.LE.20.AND.(KFLB.EQ.21.OR.KFLB.EQ.22)) THEN
+ CALL PYMEWT(MECOR,3,Q2B*SHAT/SHTNOW(MI),Z,PHI,WTME)
+ WTZ=WTZ*WTME/WTFG
+ ELSEIF(KFLA.EQ.21.AND.KFLB.EQ.21) THEN
+ CALL PYMEWT(MECOR,4,Q2B*SHAT/SHTNOW(MI),Z,PHI,WTME)
+ WTZ=WTZ*WTME/WTGG
+ ENDIF
+ ENDIF
+
+C...Parton distributions at new pT2 but old x.
+ MINT(30)=JS
+ CALL PYPDFU(KFBEAM(JS),XB,PT2,XFN)
+C...Treat val and cmp separately
+ IF (KFLBA.LE.6.AND.KSVCB.LE.0) XFN(KFLB)=XPSVC(KFLB,KSVCB)
+ IF (KSVCB.GE.1)
+ & XFN(KFLB)=PYFCMP(YB/VINT(140),YS/VINT(140),MSTP(87))
+ XFBN=XFN(KFLB)
+ IF(XFBN.LT.1D-20) THEN
+ IF(KFLA.EQ.KFLB) THEN
+ WTAP(KFLB)=0D0
+ GOTO 200
+ ELSE
+ XFBN=1D-10
+ XFN(KFLB)=XFBN
+ ENDIF
+ ENDIF
+ DO 260 KFL=-5,5
+ XFB(KFL)=XFN(KFL)
+ 260 CONTINUE
+ XFB(21)=XFN(21)
+
+C...Parton distributions at new pT2 and new x.
+ XA=XB/Z
+ MINT(30)=JS
+ CALL PYPDFU(KFBEAM(JS),XA,PT2,XFA)
+ IF (KFLBA.LE.5.AND.KFLAA.LE.5) THEN
+C...q -> q + g: only consider respective sea, val, or cmp content.
+ IF (KSVCB.LE.0) THEN
+ XFA(KFLA)=XPSVC(KFLA,KSVCB)
+ ELSE
+ YA=XA*(1D0-YS)
+ XFA(KFLB)=PYFCMP(YA/VINT(140),YS/VINT(140),MSTP(87))
+ ENDIF
+ ENDIF
+ XFAN=XFA(KFLA)
+ IF(XFAN.LT.1D-20) THEN
+ GOTO 200
+ ENDIF
+
+C...If weighting fails continue evolution.
+ WTTOT=0D0
+ IF (MCRQQ.EQ.0) THEN
+ WTPDFA=1D0/WTPDF(KFLA)
+ WTTOT=WTZ*XFAN/XFBN*WTPDFA
+ ELSEIF(MCRQQ.EQ.1) THEN
+ WTPDFA=TPM/WPDF0
+ WTTOT=WTCRQQ*WTZ*XFAN/XFBN*WTPDFA
+ XBEST=TPM/TPM0*XQ0
+ ELSEIF(MCRQQ.EQ.2) THEN
+C...Force massive quark creation.
+ WTTOT=1D0
+ ENDIF
+
+C...Loop back if trial emission fails.
+ IF(WTTOT.GE.0D0.AND.WTTOT.LT.PYR(0)) GOTO 200
+ WTACC=((1D0+PT2)/(0.25D0+PT2))**2
+ IF(WTTOT.LT.0D0) THEN
+ WRITE(CHWT,'(1P,E12.4)') WTTOT
+ CALL PYERRM(19,'(PYPTIS:) Weight '//CHWT//' negative')
+ ELSEIF(WTTOT.GT.WTACC) THEN
+ WRITE(CHWT,'(1P,E12.4)') WTTOT
+ IF (PT2.GT.PTEMAX.OR.WTTOT.GE.WTEMAX) THEN
+C...Too high weight: write out as error, but do not update error counter.
+ IF(MSTU(29).EQ.0) MSTU(23)=MSTU(23)-1
+ CALL PYERRM(19,
+ & '(PYPTIS:) Weight '//CHWT//' above unity')
+ IF (PT2.GT.PTEMAX) PTEMAX=PT2
+ IF (WTTOT.GT.WTEMAX) WTEMAX=WTTOT
+ ELSE
+ CALL PYERRM(9,
+ & '(PYPTIS:) Weight '//CHWT//' above unity')
+ ENDIF
+C...Useful for debugging but commented out for distribution:
+C print*, 'JS, MI',JS, MI
+C print*, 'PT:',SQRT(PT2), ' MCRQQ',MCRQQ
+C print*, 'A -> B C',KFLA, KFLB, KFLC
+C XFAO=XFBO/WTPDFA
+C print*, 'WT(Z,XFA,XFB)',WTZ, XFAN/XFAO, XFBO/XFBN
+ ENDIF
+
+C...Save acceptable branching.
+ IF(PT2.GT.PT2MX) THEN
+ MIMX=MINT(36)
+ JSMX=JS
+ PT2MX=PT2
+ KFLAMX=KFLA
+ KFLCMX=KFLC
+ RM2CMX=RM2C
+ Q2BMX=Q2B
+ ZMX=Z
+ PT2AMX=PT2ADJ
+ PHIMX=PHI
+ ENDIF
+
+C----------------------------------------------------------------------
+C...MODE= 1: Accept stored shower branching. Update event record etc.
+ ELSEIF (MODE.EQ.1) THEN
+ MI=MIMX
+ JS=JSMX
+ SHAT=SHTNOW(MI)
+ SIDE=3D0-2D0*JS
+C...Shift down rest of event record to make room for insertion.
+ IT=IMISEP(MI)+1
+ IM=IT+1
+ IS=IMI(JS,MI,1)
+ DO 280 I=N,IT,-1
+ IF (K(I,3).GE.IT) K(I,3)=K(I,3)+2
+ KT1=K(I,4)/MSTU(5)**2
+ KT2=K(I,5)/MSTU(5)**2
+ ID1=MOD(K(I,4),MSTU(5))
+ ID2=MOD(K(I,5),MSTU(5))
+ IM1=MOD(K(I,4)/MSTU(5),MSTU(5))
+ IM2=MOD(K(I,5)/MSTU(5),MSTU(5))
+ IF (ID1.GE.IT) ID1=ID1+2
+ IF (ID2.GE.IT) ID2=ID2+2
+ IF (IM1.GE.IT) IM1=IM1+2
+ IF (IM2.GE.IT) IM2=IM2+2
+ K(I,4)=KT1*MSTU(5)**2+IM1*MSTU(5)+ID1
+ K(I,5)=KT2*MSTU(5)**2+IM2*MSTU(5)+ID2
+ DO 270 IX=1,5
+ K(I+2,IX)=K(I,IX)
+ P(I+2,IX)=P(I,IX)
+ V(I+2,IX)=V(I,IX)
+ 270 CONTINUE
+ MCT(I+2,1)=MCT(I,1)
+ MCT(I+2,2)=MCT(I,2)
+ 280 CONTINUE
+ N=N+2
+C...Also update shifted-down pointers in IMI, IMISEP, and IPART.
+ DO 290 JI=1,MINT(31)
+ IF (IMI(1,JI,1).GE.IT) IMI(1,JI,1)=IMI(1,JI,1)+2
+ IF (IMI(1,JI,2).GE.IT) IMI(1,JI,2)=IMI(1,JI,2)+2
+ IF (IMI(2,JI,1).GE.IT) IMI(2,JI,1)=IMI(2,JI,1)+2
+ IF (IMI(2,JI,2).GE.IT) IMI(2,JI,2)=IMI(2,JI,2)+2
+ IF (JI.GE.MI) IMISEP(JI)=IMISEP(JI)+2
+C...Also update companion pointers to the present mother.
+ IF (IMI(JS,JI,2).EQ.IS) IMI(JS,JI,2)=IM
+ 290 CONTINUE
+ DO 300 IFS=1,NPART
+ IF (IPART(IFS).GE.IT) IPART(IFS)=IPART(IFS)+2
+ 300 CONTINUE
+C...Zero entries dedicated for new timelike and mother partons.
+ DO 320 I=IT,IT+1
+ DO 310 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 310 CONTINUE
+ MCT(I,1)=0
+ MCT(I,2)=0
+ 320 CONTINUE
+
+C...Define timelike and new mother partons. History.
+ K(IT,1)=3
+ K(IT,2)=KFLCMX
+ K(IM,1)=14
+ K(IM,2)=KFLAMX
+ K(IS,3)=IM
+ K(IT,3)=IM
+C...Set mother origin = side.
+ K(IM,3)=MINT(83)+JS+2
+ IF(MI.GE.2) K(IM,3)=MINT(83)+JS
+
+C...Define colour flow of branching.
+ IM1=IM
+ IM2=IM
+C...q -> q + gamma.
+ IF(K(IT,2).EQ.22) THEN
+ K(IT,1)=1
+ ID1=IS
+ ID2=IS
+C...q -> q + g.
+ ELSEIF(K(IM,2).GT.0.AND.K(IM,2).LE.5.AND.K(IT,2).EQ.21) THEN
+ ID1=IT
+ ID2=IS
+C...q -> g + q.
+ ELSEIF(K(IM,2).GT.0.AND.K(IM,2).LE.5) THEN
+ ID1=IS
+ ID2=IT
+C...qbar -> qbar + g.
+ ELSEIF(K(IM,2).LT.0.AND.K(IM,2).GE.-5.AND.K(IT,2).EQ.21) THEN
+ ID1=IS
+ ID2=IT
+C...qbar -> g + qbar.
+ ELSEIF(K(IM,2).LT.0.AND.K(IM,2).GE.-5) THEN
+ ID1=IT
+ ID2=IS
+C...g -> g + g; g -> q + qbar..
+ ELSEIF((K(IT,2).EQ.21.AND.PYR(0).GT.0.5D0).OR.K(IT,2).LT.0) THEN
+ ID1=IS
+ ID2=IT
+ ELSE
+ ID1=IT
+ ID2=IS
+ ENDIF
+ IF(IM1.EQ.IM) K(IM1,4)=K(IM1,4)+ID1
+ IF(IM2.EQ.IM) K(IM2,5)=K(IM2,5)+ID2
+ K(ID1,4)=K(ID1,4)+MSTU(5)*IM1
+ K(ID2,5)=K(ID2,5)+MSTU(5)*IM2
+ IF(ID1.NE.ID2) THEN
+ K(ID1,5)=K(ID1,5)+MSTU(5)*ID2
+ K(ID2,4)=K(ID2,4)+MSTU(5)*ID1
+ ENDIF
+ IF(K(IT,1).EQ.1) THEN
+ K(IT,4)=0
+ K(IT,5)=0
+ ENDIF
+C...Update IMI and colour tag arrays.
+ IMI(JS,MI,1)=IM
+ DO 330 MC=1,2
+ MCT(IT,MC)=0
+ MCT(IM,MC)=0
+ 330 CONTINUE
+ DO 340 JCS=4,5
+ KCS=JCS
+C...If mother flag not yet set for spacelike parton, trace it.
+ IF (K(IS,KCS)/MSTU(5)**2.LE.1) CALL PYCTTR(IS,-KCS,IM)
+ IF(MINT(51).NE.0) RETURN
+ 340 CONTINUE
+ DO 350 JCS=4,5
+ KCS=JCS
+C...If mother flag not yet set for timelike parton, trace it.
+ IF (K(IT,KCS)/MSTU(5)**2.LE.1) CALL PYCTTR(IT,KCS,IM)
+ IF(MINT(51).NE.0) RETURN
+ 350 CONTINUE
+
+C...Boost recoiling parton to compensate for Q2 scale.
+ BETAZ=SIDE*(1D0-(1D0+Q2BMX/SHAT)**2)/
+ & (1D0+(1D0+Q2BMX/SHAT)**2)
+ IR=IMI(3-JS,MI,1)
+ CALL PYROBO(IR,IR,0D0,0D0,0D0,0D0,BETAZ)
+
+C...Define system to be rotated and boosted
+C...(not including the 2 just added partons)
+C...(but including the docu lines for first interaction)
+ IMIN=IMISEP(MI-1)+1
+ IF (MI.EQ.1) IMIN=MINT(83)+5
+ IMAX=IMISEP(MI)-2
+
+C...Rotate back system in phi to compensate for subsequent rotation.
+ CALL PYROBO(IMIN,IMAX,0D0,-PHIMX,0D0,0D0,0D0)
+
+C...Define kinematics of new partons in old frame.
+ IMAX=IMISEP(MI)
+ P(IM,1)=SQRT(PT2AMX)*SHAT/(ZMX*(SHAT+Q2BMX))
+ P(IM,3)=0.5D0*SQRT(SHAT)*((SHAT-Q2BMX)/((SHAT
+ & +Q2BMX)*ZMX)+(Q2BMX+RM2CMX)/SHAT)*SIDE
+ P(IM,4)=SQRT(P(IM,1)**2+P(IM,3)**2)
+ P(IT,1)=P(IM,1)
+ P(IT,3)=P(IM,3)-0.5D0*(SHAT+Q2BMX)/SQRT(SHAT)*SIDE
+ P(IT,4)=SQRT(P(IT,1)**2+P(IT,3)**2+RM2CMX)
+ P(IT,5)=SQRT(RM2CMX)
+
+C...Update internal line, now spacelike
+ P(IS,1)=P(IM,1)-P(IT,1)
+ P(IS,2)=P(IM,2)-P(IT,2)
+ P(IS,3)=P(IM,3)-P(IT,3)
+ P(IS,4)=P(IM,4)-P(IT,4)
+ P(IS,5)=P(IS,4)**2-P(IS,1)**2-P(IS,2)**2-P(IS,3)**2
+C...Represent spacelike virtualities as -sqrt(abs(Q2)) .
+ IF (P(IS,5).LT.0D0) THEN
+ P(IS,5)=-SQRT(ABS(P(IS,5)))
+ ELSE
+ P(IS,5)=SQRT(P(IS,5))
+ ENDIF
+
+C...Boost entire system and rotate to new frame.
+C...(including docu lines)
+ BETAX=(P(IM,1)+P(IR,1))/(P(IM,4)+P(IR,4))
+ BETAZ=(P(IM,3)+P(IR,3))/(P(IM,4)+P(IR,4))
+ IF(BETAX**2+BETAZ**2.GE.1D0) THEN
+ CALL PYERRM(1,'(PYPTIS:) boost bigger than unity')
+ MINT(51)=1
+ IFAIL=-1
+ RETURN
+ ENDIF
+ CALL PYROBO(IMIN,IMAX,0D0,0D0,-BETAX,0D0,-BETAZ)
+ I1=IMI(1,MI,1)
+ THETA=PYANGL(P(I1,3),P(I1,1))
+ CALL PYROBO(IMIN,IMAX,-THETA,PHIMX,0D0,0D0,0D0)
+
+C...Global statistics.
+ MINT(352)=MINT(352)+1
+ VINT(352)=VINT(352)+SQRT(P(IT,1)**2+P(IT,2)**2)
+ IF (MINT(352).EQ.1) VINT(357)=SQRT(P(IT,1)**2+P(IT,2)**2)
+
+C...Add parton with relevant pT scale for timelike shower.
+ IF (K(IT,2).NE.22) THEN
+ NPART=NPART+1
+ IPART(NPART)=IT
+ PTPART(NPART)=SQRT(PT2AMX)
+ ENDIF
+
+C...Update saved variables.
+ SHTNOW(MIMX)=SHTNOW(MIMX)/ZMX
+ NISGEN(JSMX,MIMX)=NISGEN(JSMX,MIMX)+1
+ XMI(JSMX,MIMX)=XMI(JSMX,MIMX)/ZMX
+ PT2SAV(JSMX,MIMX)=PT2MX
+ ZSAV(JS,MIMX)=ZMX
+
+ KSA=IABS(K(IS,2))
+ KMA=IABS(K(IM,2))
+ IF (KSA.EQ.21.AND.KMA.GE.1.AND.KMA.LE.5) THEN
+C...Gluon reconstructs to quark.
+C...Decide whether newly created quark is valence or sea:
+ MINT(30)=JS
+ CALL PYPTMI(2,PT2NOW,PTDUM1,PTDUM2,IFAIL)
+ IF(MINT(51).NE.0) RETURN
+ ENDIF
+ IF(KSA.GE.1.AND.KSA.LE.5.AND.KMA.EQ.21) THEN
+C...Quark reconstructs to gluon.
+C...Now some guy may have lost his companion. Check.
+ ICMP=IMI(JS,MI,2)
+ IF (ICMP.GT.0) THEN
+ CALL PYERRM(9,'(PYPTIS:) Sorry, companion quark radiated'
+ & //' away. Cannot handle that yet. Giving up.')
+ MINT(51)=1
+ RETURN
+ ELSEIF(ICMP.LT.0) THEN
+C...A sea quark with companion still in BR was reconstructed to a gluon.
+C...Companion should now be removed from the beam remnant.
+C...(Momentum integral is automatically updated in next call to PYPDFU.)
+ ICMP=-ICMP
+ IFL=-K(IS,2)
+ DO 370 JCMP=ICMP,NVC(JS,IFL)-1
+ XASSOC(JS,IFL,JCMP)=XASSOC(JS,IFL,JCMP+1)
+ DO 360 JI=1,MINT(31)
+ KMI=-IMI(JS,JI,2)
+ JFL=-K(IMI(JS,JI,1),2)
+ IF (KMI.EQ.JCMP+1.AND.JFL.EQ.IFL) IMI(JS,JI,2)=IMI(JS,JI
+ & ,2)+1
+ 360 CONTINUE
+ 370 CONTINUE
+ NVC(JS,IFL)=NVC(JS,IFL)-1
+ ENDIF
+C...Set gluon IMI(JS,MI,2) = 0.
+ IMI(JS,MI,2)=0
+ ELSEIF(KSA.GE.1.AND.KSA.LE.5.AND.KMA.NE.21) THEN
+C...Quark reconstructing to quark. If sea with companion still in BR
+C...then update associated x value.
+C...(Momentum integral is automatically updated in next call to PYPDFU.)
+ IF (IMI(JS,MI,2).LT.0) THEN
+ ICMP=-IMI(JS,MI,2)
+ IFL=-K(IS,2)
+ XASSOC(JS,IFL,ICMP)=XMI(JSMX,MIMX)
+ ENDIF
+ ENDIF
+
+ ENDIF
+
+C...If reached this point, normal exit.
+ 380 IFAIL=0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMEMX
+C...Generates maximum ME weight in some initial-state showers.
+C...Inparameter MECOR: kind of hard scattering process
+C...Outparameter WTFF: maximum weight for fermion -> fermion
+C... WTGF: maximum weight for gluon/photon -> fermion
+C... WTFG: maximum weight for fermion -> gluon/photon
+C... WTGG: maximum weight for gluon -> gluon
+
+ SUBROUTINE PYMEMX(MECOR,WTFF,WTGF,WTFG,WTGG)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYPARS/,/PYINT1/,/PYINT2/
+
+C...Default maximum weight.
+ WTFF=1D0
+ WTGF=1D0
+ WTFG=1D0
+ WTGG=1D0
+
+C...Select maximum weight by process.
+ IF(MECOR.EQ.1) THEN
+ WTFF=1D0
+ WTGF=3D0
+ ELSEIF(MECOR.EQ.2) THEN
+ WTFG=1D0
+ WTGG=1D0
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMEWT
+C...Calculates actual ME weight in some initial-state showers.
+C...Inparameter MECOR: kind of hard scattering process
+C... IFLCB: flavour combination of branching,
+C... 1 for fermion -> fermion,
+C... 2 for gluon/photon -> fermion
+C... 3 for fermion -> gluon/photon,
+C... 4 for gluon -> gluon
+C... Q2: Q2 value of shower branching
+C... Z: Z value of branching
+C...In+outparameter PHIBR: azimuthal angle of branching
+C...Outparameter WTME: actual ME weight
+
+ SUBROUTINE PYMEWT(MECOR,IFLCB,Q2,Z,PHIBR,WTME)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYPARS/,/PYINT1/,/PYINT2/
+
+C...Default output.
+ WTME=1D0
+
+C...Define kinematics of shower branching in Mandelstam variables.
+ SQM=VINT(44)
+ SH=SQM/Z
+ TH=-Q2
+ UH=Q2-SQM*(1D0-Z)/Z
+
+C...Matrix-element corrections for f + fbar -> s-channel vector boson.
+ IF(MECOR.EQ.1) THEN
+ IF(IFLCB.EQ.1) THEN
+ WTME=(TH**2+UH**2+2D0*SQM*SH)/(SH**2+SQM**2)
+ ELSEIF(IFLCB.EQ.2) THEN
+ WTME=(SH**2+TH**2+2D0*SQM*UH)/((SH-SQM)**2+SQM**2)
+ ENDIF
+
+C...Matrix-element corrections for g + g -> Higgs (h0, H0, A0).
+ ELSEIF(MECOR.EQ.2) THEN
+ IF(IFLCB.EQ.3) THEN
+ WTME=(SH**2+UH**2)/(SH**2+(SH-SQM)**2)
+ ELSEIF(IFLCB.EQ.4) THEN
+ WTME=0.5D0*(SH**4+UH**4+TH**4+SQM**4)/(SH**2-SQM*(SH-SQM))**2
+ ENDIF
+
+C...Matrix-element corrections for q + qbar -> Higgs (h0)
+ ELSEIF(MECOR.EQ.3) THEN
+ IF(IFLCB.EQ.2) THEN
+ WTME=(SH**2+TH**2+2D0*(SQM-TH)*(SQM-SH))/
+ 1 (SH**2+2D0*SQM*(SQM-SH))
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPTMI
+C...Handles the generation of additional interactions in the new
+C...multiple interactions framework.
+C...MODE=-1 : Initalize MI from scratch.
+C...MODE= 0 : Generate trial interaction. Start at PT2NOW, solve
+C... Sudakov for PT2, abort if below PT2CUT.
+C...MODE= 1 : Accept interaction at PT2NOW and store variables.
+C...MODE= 2 : Decide sea/val/cmp for kicked-out quark at PT2NOW
+C...PT2NOW : Starting (max) PT2 scale for evolution.
+C...PT2CUT : Lower limit for evolution.
+C...PT2 : Result of evolution. Generated PT2 for trial interaction.
+C...IFAIL : Status return code.
+C... = 0: All is well.
+C... < 0: Phase space exhausted, generation to be terminated.
+C... > 0: Additional interaction vetoed, but continue evolution.
+
+ SUBROUTINE PYPTMI(MODE,PT2NOW,PT2CUT,PT2,IFAIL)
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement for maximum size of showers.
+ PARAMETER (MAXNUR=1000)
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ COMMON/PYISMX/MIMX,JSMX,KFLAMX,KFLCMX,KFBEAM(2),NISGEN(2,240),
+ & PT2MX,PT2AMX,ZMX,RM2CMX,Q2BMX,PHIMX
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+C...Local arrays and saved variables.
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5),XPQ(-25:25)
+
+ SAVE /PYPART/,/PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYPARS/,
+ & /PYINT1/,/PYINT2/,/PYINT3/,/PYINT5/,/PYINT7/,/PYINTM/,
+ & /PYISMX/,/PYCTAG/
+ SAVE XT2FAC,SIGS
+
+ IFAIL=0
+C...Set MI subprocess = QCD 2 -> 2.
+ ISUB=96
+
+C----------------------------------------------------------------------
+C...MODE=-1: Initialize from scratch
+ IF (MODE.EQ.-1) THEN
+C...Initialize PT2 array.
+ PT2MI(1)=VINT(54)
+C...Initialize list of incoming beams and partons from two sides.
+ DO 110 JS=1,2
+ DO 100 MI=1,240
+ IMI(JS,MI,1)=0
+ IMI(JS,MI,2)=0
+ 100 CONTINUE
+ NMI(JS)=1
+ IMI(JS,1,1)=MINT(84)+JS
+ IMI(JS,1,2)=0
+ XMI(JS,1)=VINT(40+JS)
+C...Rescale x values to fractions of photon energy.
+ IF(MINT(18+JS).EQ.1) XMI(JS,1)=VINT(40+JS)/VINT(154+JS)
+C...Hard reset: hard interaction initiators motherless by definition.
+ K(MINT(84)+JS,3)=2+JS
+ K(MINT(84)+JS,4)=MOD(K(MINT(84)+JS,4),MSTU(5))
+ K(MINT(84)+JS,5)=MOD(K(MINT(84)+JS,5),MSTU(5))
+ 110 CONTINUE
+ IMISEP(0)=MINT(84)
+ IMISEP(1)=N
+ IF (MOD(MSTP(81),10).GE.1) THEN
+ IF(MSTP(82).LE.1) THEN
+ SIGRAT=XSEC(ISUB,1)/MAX(1D-10,VINT(315)*VINT(316)*SIGT(0,0
+ & ,5))
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGRAT=SIGRAT*
+ & VINT(317)/(VINT(318)*VINT(320))
+ XT2FAC=SIGRAT*VINT(149)/(1D0-VINT(149))
+ ELSE
+ XT2FAC=VINT(146)*VINT(148)*XSEC(ISUB,1)/
+ & MAX(1D-10,SIGT(0,0,5))*VINT(149)*(1D0+VINT(149))
+ ENDIF
+ ENDIF
+C...Zero entries relating to scatterings beyond the first.
+ DO 120 MI=2,240
+ IMI(1,MI,1)=0
+ IMI(2,MI,1)=0
+ IMI(1,MI,2)=0
+ IMI(2,MI,2)=0
+ IMISEP(MI)=IMISEP(1)
+ PT2MI(MI)=0D0
+ XMI(1,MI)=0D0
+ XMI(2,MI)=0D0
+ 120 CONTINUE
+C...Initialize factors for PDF reshaping.
+ DO 140 JS=1,2
+ KFBEAM(JS)=MINT(10+JS)
+ IF(MINT(18+JS).EQ.1) KFBEAM(JS)=22
+ KFABM=IABS(KFBEAM(JS))
+ KFSBM=ISIGN(1,KFBEAM(JS))
+
+C...Zero flavour content of incoming beam particle.
+ KFIVAL(JS,1)=0
+ KFIVAL(JS,2)=0
+ KFIVAL(JS,3)=0
+C... Flavour content of baryon.
+ IF(KFABM.GT.1000) THEN
+ KFIVAL(JS,1)=KFSBM*MOD(KFABM/1000,10)
+ KFIVAL(JS,2)=KFSBM*MOD(KFABM/100,10)
+ KFIVAL(JS,3)=KFSBM*MOD(KFABM/10,10)
+C... Flavour content of pi+-, K+-.
+ ELSEIF(KFABM.EQ.211) THEN
+ KFIVAL(JS,1)=KFSBM*2
+ KFIVAL(JS,2)=-KFSBM
+ ELSEIF(KFABM.EQ.321) THEN
+ KFIVAL(JS,1)=-KFSBM*3
+ KFIVAL(JS,2)=KFSBM*2
+C... Flavour content of pi0, gamma, K0S, K0L not defined yet.
+ ENDIF
+
+C...Zero initial valence and companion content.
+ DO 130 IFL=-6,6
+ NVC(JS,IFL)=0
+ 130 CONTINUE
+ 140 CONTINUE
+C...Set up colour line tags starting from hard interaction initiators.
+ NCT=0
+C...Reset colour tag array and colour processing flags.
+ DO 150 I=IMISEP(0)+1,N
+ MCT(I,1)=0
+ MCT(I,2)=0
+ K(I,4)=MOD(K(I,4),MSTU(5)**2)
+ K(I,5)=MOD(K(I,5),MSTU(5)**2)
+ 150 CONTINUE
+C... Consider each side in turn.
+ DO 170 JS=1,2
+ I1=IMI(JS,1,1)
+ I2=IMI(3-JS,1,1)
+ DO 160 JCS=4,5
+ IF (K(I1,2).NE.21.AND.(9-2*JCS).NE.ISIGN(1,K(I1,2)))
+ & GOTO 160
+ IF (K(I1,JCS)/MSTU(5)**2.NE.0) GOTO 160
+ KCS=JCS
+ CALL PYCTTR(I1,KCS,I2)
+ IF(MINT(51).NE.0) RETURN
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...Range checking for companion quark pdf large-x param.
+ IF (MSTP(87).LT.0) THEN
+ CALL PYERRM(19,'(PYPTMI:) MSTP(87) out of range. Forced'//
+ & ' MSTP(87)=0')
+ MSTP(87)=0
+ ELSEIF (MSTP(87).GT.4) THEN
+ CALL PYERRM(19,'(PYPTMI:) MSTP(87) out of range. Forced'//
+ & ' MSTP(87)=4')
+ MSTP(87)=4
+ ENDIF
+
+C----------------------------------------------------------------------
+C...MODE=0: Generate trial interaction. Return codes:
+C...IFAIL < 0: Phase space exhausted, generation to be terminated.
+C...IFAIL = 0: Additional interaction generated at PT2.
+C...IFAIL > 0: Additional interaction vetoed, but continue evolution.
+ ELSEIF (MODE.EQ.0) THEN
+C...Abolute MI max scale = VINT(62)
+ XT2=4D0*MIN(PT2NOW,VINT(62))/VINT(2)
+ 180 IF(MSTP(82).LE.1) THEN
+ XT2=XT2FAC*XT2/(XT2FAC-XT2*LOG(PYR(0)))
+ IF(XT2.LT.VINT(149)) IFAIL=-2
+ ELSE
+ IF(XT2.LE.0.01001D0*VINT(149)) THEN
+ IFAIL=-3
+ ELSE
+ XT2=XT2FAC*(XT2+VINT(149))/(XT2FAC-(XT2+VINT(149))*
+ & LOG(PYR(0)))-VINT(149)
+ ENDIF
+ ENDIF
+C...Also exit if below lower limit or if higher trial branching
+C...already found.
+ PT2=0.25D0*VINT(2)*XT2
+ IF (PT2.LE.PT2CUT) IFAIL=-4
+ IF (PT2.LE.PT2MX) IFAIL=-5
+ IF (IFAIL.NE.0) THEN
+ PT2=0D0
+ RETURN
+ ENDIF
+ IF(MSTP(82).GE.2) PT2=MAX(0.25D0*VINT(2)*0.01D0*VINT(149),PT2)
+ VINT(25)=4D0*PT2/VINT(2)
+ XT2=VINT(25)
+
+C...Choose tau and y*. Calculate cos(theta-hat).
+ IF(PYR(0).LE.COEF(ISUB,1)) THEN
+ TAUT=(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)**PYR(0)
+ TAU=XT2*(1D0+TAUT)**2/(4D0*TAUT)
+ ELSE
+ TAU=XT2*(1D0+TAN(PYR(0)*ATAN(SQRT(1D0/XT2-1D0)))**2)
+ ENDIF
+ VINT(21)=TAU
+C...New: require shat > 1.
+ IF(TAU*VINT(2).LT.1D0) GOTO 180
+ CALL PYKLIM(2)
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ CALL PYKMAP(2,MYST,PYR(0))
+ VINT(23)=SQRT(MAX(0D0,1D0-XT2/TAU))*(-1)**INT(1.5D0+PYR(0))
+
+C...Check that x not used up. Accept or reject kinematical variables.
+ X1M=SQRT(TAU)*EXP(VINT(22))
+ X2M=SQRT(TAU)*EXP(-VINT(22))
+ IF(VINT(143)-X1M.LT.0.01D0.OR.VINT(144)-X2M.LT.0.01D0) GOTO 180
+ VINT(71)=0.5D0*VINT(1)*SQRT(XT2)
+ CALL PYSIGH(NCHN,SIGS)
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGS=SIGS*VINT(320)
+ IF(SIGS.LT.XSEC(ISUB,1)*PYR(0)) GOTO 180
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGS=SIGS/VINT(320)
+
+C...Save if highest PT so far.
+ IF (PT2.GT.PT2MX) THEN
+ JSMX=0
+ MIMX=MINT(31)+1
+ PT2MX=PT2
+ ENDIF
+
+C----------------------------------------------------------------------
+C...MODE=1: Generate and save accepted scattering.
+ ELSEIF (MODE.EQ.1) THEN
+ PT2=PT2NOW
+C...Reset K, P, V, and MCT vectors.
+ DO 200 I=N+1,N+4
+ DO 190 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 190 CONTINUE
+ MCT(I,1)=0
+ MCT(I,2)=0
+ 200 CONTINUE
+
+ NTRY=0
+C...Choose flavour of reacting partons (and subprocess).
+ 210 NTRY=NTRY+1
+ IF (NTRY.GT.50) THEN
+ CALL PYERRM(9,'(PYPTMI:) Unable to generate additional '
+ & //'interaction. Giving up!')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ RSIGS=SIGS*PYR(0)
+ DO 220 ICHN=1,NCHN
+ KFL1=ISIG(ICHN,1)
+ KFL2=ISIG(ICHN,2)
+ ICONMI=ISIG(ICHN,3)
+ RSIGS=RSIGS-SIGH(ICHN)
+ IF(RSIGS.LE.0D0) GOTO 230
+ 220 CONTINUE
+
+C...Reassign to appropriate process codes.
+ 230 ISUBMI=ICONMI/10
+ ICONMI=MOD(ICONMI,10)
+
+C...Choose new quark flavour for annihilation graphs
+ IF(ISUBMI.EQ.12.OR.ISUBMI.EQ.53) THEN
+ SH=VINT(21)*VINT(2)
+ CALL PYWIDT(21,SH,WDTP,WDTE)
+ 240 RKFL=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))*PYR(0)
+ DO 250 I=1,MDCY(21,3)
+ KFLF=KFDP(I+MDCY(21,2)-1,1)
+ RKFL=RKFL-(WDTE(I,1)+WDTE(I,2)+WDTE(I,4))
+ IF(RKFL.LE.0D0) GOTO 260
+ 250 CONTINUE
+ 260 IF(ISUBMI.EQ.53.AND.ICONMI.LE.2) THEN
+ IF(KFLF.GE.4) GOTO 240
+ ELSEIF(ISUBMI.EQ.53.AND.ICONMI.LE.4) THEN
+ KFLF=4
+ ICONMI=ICONMI-2
+ ELSEIF(ISUBMI.EQ.53) THEN
+ KFLF=5
+ ICONMI=ICONMI-4
+ ENDIF
+ ENDIF
+
+C...Final state flavours and colour flow: default values
+ JS=1
+ KFL3=KFL1
+ KFL4=KFL2
+ KCC=20
+ KCS=ISIGN(1,KFL1)
+
+ IF(ISUBMI.EQ.11) THEN
+C...f + f' -> f + f' (g exchange); th = (p(f)-p(f))**2
+ KCC=ICONMI
+ IF(KFL1*KFL2.LT.0) KCC=KCC+2
+
+ ELSEIF(ISUBMI.EQ.12) THEN
+C...f + fbar -> f' + fbar'; th = (p(f)-p(f'))**2
+ KFL3=ISIGN(KFLF,KFL1)
+ KFL4=-KFL3
+ KCC=4
+
+ ELSEIF(ISUBMI.EQ.13) THEN
+C...f + fbar -> g + g; th arbitrary
+ KFL3=21
+ KFL4=21
+ KCC=ICONMI+4
+
+ ELSEIF(ISUBMI.EQ.28) THEN
+C...f + g -> f + g; th = (p(f)-p(f))**2
+ IF(KFL1.EQ.21) JS=2
+ KCC=ICONMI+6
+ IF(KFL1.EQ.21) KCC=KCC+2
+ IF(KFL1.NE.21) KCS=ISIGN(1,KFL1)
+ IF(KFL2.NE.21) KCS=ISIGN(1,KFL2)
+
+ ELSEIF(ISUBMI.EQ.53) THEN
+C...g + g -> f + fbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ KFL3=ISIGN(KFLF,KCS)
+ KFL4=-KFL3
+ KCC=ICONMI+10
+
+ ELSEIF(ISUBMI.EQ.68) THEN
+C...g + g -> g + g; th arbitrary
+ KCC=ICONMI+12
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ ENDIF
+
+C...Check that massive sea quarks have non-zero phase space for g -> Q Q
+ IF (IABS(KFL3).EQ.4.OR.IABS(KFL4).EQ.4.OR.IABS(KFL3).EQ.5
+ & .OR.IABS(KFL4).EQ.5) THEN
+ RMMAX2=MAX(PMAS(PYCOMP(KFL3),1),PMAS(PYCOMP(KFL4),1))**2
+ IF (PT2.LE.1.05*RMMAX2) THEN
+ IF (NTRY.EQ.1) CALL PYERRM(9,'(PYPTMI:) Heavy quarks'
+ & //' created below threshold. Rejected.')
+ GOTO 210
+ ENDIF
+ ENDIF
+
+C...Store flavours of scattering.
+ MINT(13)=KFL1
+ MINT(14)=KFL2
+ MINT(15)=KFL1
+ MINT(16)=KFL2
+ MINT(21)=KFL3
+ MINT(22)=KFL4
+
+C...Set flavours and mothers of scattering partons.
+ K(N+1,1)=14
+ K(N+2,1)=14
+ K(N+3,1)=3
+ K(N+4,1)=3
+ K(N+1,2)=KFL1
+ K(N+2,2)=KFL2
+ K(N+3,2)=KFL3
+ K(N+4,2)=KFL4
+ K(N+1,3)=MINT(83)+1
+ K(N+2,3)=MINT(83)+2
+ K(N+3,3)=N+1
+ K(N+4,3)=N+2
+
+C...Store colour connection indices.
+ DO 270 J=1,2
+ JC=J
+ IF(KCS.EQ.-1) JC=3-J
+ IF(ICOL(KCC,1,JC).NE.0) K(N+1,J+3)=N+ICOL(KCC,1,JC)
+ IF(ICOL(KCC,2,JC).NE.0) K(N+2,J+3)=N+ICOL(KCC,2,JC)
+ IF(ICOL(KCC,3,JC).NE.0) K(N+3,J+3)=MSTU(5)*(N+ICOL(KCC,3,JC))
+ IF(ICOL(KCC,4,JC).NE.0) K(N+4,J+3)=MSTU(5)*(N+ICOL(KCC,4,JC))
+ 270 CONTINUE
+
+C...Store incoming and outgoing partons in their CM-frame.
+ SHR=SQRT(VINT(21))*VINT(1)
+ P(N+1,3)=0.5D0*SHR
+ P(N+1,4)=0.5D0*SHR
+ P(N+2,3)=-0.5D0*SHR
+ P(N+2,4)=0.5D0*SHR
+ P(N+3,5)=PYMASS(K(N+3,2))
+ P(N+4,5)=PYMASS(K(N+4,2))
+ IF(P(N+3,5)+P(N+4,5).GE.SHR) THEN
+ IFAIL=1
+ RETURN
+ ENDIF
+ P(N+3,4)=0.5D0*(SHR+(P(N+3,5)**2-P(N+4,5)**2)/SHR)
+ P(N+3,3)=SQRT(MAX(0D0,P(N+3,4)**2-P(N+3,5)**2))
+ P(N+4,4)=SHR-P(N+3,4)
+ P(N+4,3)=-P(N+3,3)
+
+C...Rotate outgoing partons using cos(theta)=(th-uh)/lam(sh,sqm3,sqm4)
+ PHI=PARU(2)*PYR(0)
+ CALL PYROBO(N+3,N+4,ACOS(VINT(23)),PHI,0D0,0D0,0D0)
+
+C...Global statistics.
+ MINT(351)=MINT(351)+1
+ VINT(351)=VINT(351)+SQRT(P(N+3,1)**2+P(N+3,2)**2)
+ IF (MINT(351).EQ.1) VINT(356)=SQRT(P(N+3,1)**2+P(N+3,2)**2)
+
+C...Keep track of loose colour ends and information on scattering.
+ MINT(31)=MINT(31)+1
+ MINT(36)=MINT(31)
+ PT2MI(MINT(36))=PT2
+ IMISEP(MINT(31))=N+4
+ DO 280 JS=1,2
+ IMI(JS,MINT(31),1)=N+JS
+ IMI(JS,MINT(31),2)=0
+ XMI(JS,MINT(31))=VINT(40+JS)
+ NMI(JS)=NMI(JS)+1
+C...Update cumulative counters
+ VINT(142+JS)=VINT(142+JS)-VINT(40+JS)
+ VINT(150+JS)=VINT(150+JS)+VINT(40+JS)
+ 280 CONTINUE
+
+C...Add to list of final state partons
+ IPART(NPART+1)=N+3
+ IPART(NPART+2)=N+4
+ PTPART(NPART+1)=SQRT(PT2)
+ PTPART(NPART+2)=SQRT(PT2)
+ NPART=NPART+2
+
+C...Initialize ISR
+ NISGEN(1,MINT(31))=0
+ NISGEN(2,MINT(31))=0
+
+C...Update ER
+ N=N+4
+ IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYMIGN:) no more memory left in PYJETS')
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Finally, assign colour tags to new partons
+ DO 300 JS=1,2
+ I1=IMI(JS,MINT(31),1)
+ I2=IMI(3-JS,MINT(31),1)
+ DO 290 JCS=4,5
+ IF (K(I1,2).NE.21.AND.(9-2*JCS).NE.ISIGN(1,K(I1,2)))
+ & GOTO 290
+ IF (K(I1,JCS)/MSTU(5)**2.NE.0) GOTO 290
+ KCS=JCS
+ CALL PYCTTR(I1,KCS,I2)
+ IF(MINT(51).NE.0) RETURN
+ 290 CONTINUE
+ 300 CONTINUE
+
+C----------------------------------------------------------------------
+C...MODE=2: Decide whether quarks in last scattering were valence,
+C...companion, or sea.
+ ELSEIF (MODE.EQ.2) THEN
+ JS=MINT(30)
+ MI=MINT(36)
+ PT2=PT2NOW
+ KFSBM=ISIGN(1,MINT(10+JS))
+ IFL=K(IMI(JS,MI,1),2)
+ IMI(JS,MI,2)=0
+ IF (IABS(IFL).GE.6) THEN
+ IF (IABS(IFL).EQ.6) THEN
+ CALL PYERRM(29,'(PYPTMI:) top in initial state!')
+ ENDIF
+ RETURN
+ ENDIF
+C...Get PDFs at X(rescaled) and PT2 of the current initiator.
+C...(Do not include the parton itself in the X rescaling.)
+ X=XMI(JS,MI)
+ XRSC=X/(VINT(142+JS)+X)
+C...Note: XPSVC = x*pdf.
+ MINT(30)=JS
+ CALL PYPDFU(KFBEAM(JS),XRSC,PT2,XPQ)
+ SEA=XPSVC(IFL,-1)
+ VAL=XPSVC(IFL,0)
+ CMP=0D0
+ DO 310 IVC=1,NVC(JS,IFL)
+ CMP=CMP+XPSVC(IFL,IVC)
+ 310 CONTINUE
+
+C...Decide (Extra factor x cancels in the dvision).
+ 320 RVCS=PYR(0)*(SEA+VAL+CMP)
+ IVNOW=1
+ 330 IF (RVCS.LE.VAL.AND.IVNOW.GE.1) THEN
+C...Safety check that valence present; pi0/gamma/K0S/K0L special cases.
+ IVNOW=0
+ IF(KFIVAL(JS,1).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,2).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,3).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,1).EQ.0) THEN
+ IF(KFBEAM(JS).EQ.111.AND.IABS(IFL).LE.2) IVNOW=1
+ IF(KFBEAM(JS).EQ.22.AND.IABS(IFL).LE.5) IVNOW=1
+ IF((KFBEAM(JS).EQ.130.OR.KFBEAM(JS).EQ.310).AND.
+ & (IABS(IFL).EQ.1.OR.IABS(IFL).EQ.3)) IVNOW=1
+ ELSE
+C...Count down valence remaining. Do not count current scattering.
+ DO 340 I1=1,NMI(JS)
+ IF (I1.EQ.MINT(36)) GOTO 340
+ IF (K(IMI(JS,I1,1),2).EQ.IFL.AND.IMI(JS,I1,2).EQ.0)
+ & IVNOW=IVNOW-1
+ 340 CONTINUE
+ ENDIF
+ IF(IVNOW.EQ.0) GOTO 330
+C...Mark valence.
+ IMI(JS,MI,2)=0
+C...Sets valence content of gamma, pi0, K0S, K0L if not done.
+ IF(KFIVAL(JS,1).EQ.0) THEN
+ IF(KFBEAM(JS).EQ.111.OR.KFBEAM(JS).EQ.22) THEN
+ KFIVAL(JS,1)=IFL
+ KFIVAL(JS,2)=-IFL
+ ELSEIF(KFBEAM(JS).EQ.130.OR.KFBEAM(JS).EQ.310) THEN
+ KFIVAL(JS,1)=IFL
+ IF(IABS(IFL).EQ.1) KFIVAL(JS,2)=ISIGN(3,-IFL)
+ IF(IABS(IFL).NE.1) KFIVAL(JS,2)=ISIGN(1,-IFL)
+ ENDIF
+ ENDIF
+
+ ELSEIF (RVCS.LE.VAL+SEA) THEN
+C...If sea, add opposite sign companion parton. Store X and I.
+ NVC(JS,-IFL)=NVC(JS,-IFL)+1
+ XASSOC(JS,-IFL,NVC(JS,-IFL))=XMI(JS,MI)
+C...Set pointer to companion
+ IMI(JS,MI,2)=-NVC(JS,-IFL)
+
+ ELSE
+C...If companion, decide which one.
+ IF (NVC(JS,IFL).EQ.0) THEN
+ CMP=0D0
+ CALL PYERRM(9,'(PYPTMI:) No cmp quark, but pdf != 0!')
+ GOTO 320
+ ENDIF
+ CMPSUM=VAL+SEA
+ ISEL=0
+ 350 ISEL=ISEL+1
+ CMPSUM=CMPSUM+XPSVC(IFL,ISEL)
+ IF (RVCS.GT.CMPSUM.AND.ISEL.LT.NVC(JS,IFL)) GOTO 350
+C...Find original sea (anti-)quark. Do not consider current scattering.
+ IASSOC=0
+ DO 360 I1=1,NMI(JS)
+ IF (I1.EQ.MINT(36)) GOTO 360
+ IF (K(IMI(JS,I1,1),2).NE.-IFL) GOTO 360
+ IF (-IMI(JS,I1,2).EQ.ISEL) THEN
+ IMI(JS,MI,2)=IMI(JS,I1,1)
+ IMI(JS,I1,2)=IMI(JS,MI,1)
+ ENDIF
+ 360 CONTINUE
+C...Mark companion "out-kicked".
+ XASSOC(JS,IFL,ISEL)=-XASSOC(JS,IFL,ISEL)
+ ENDIF
+
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYFCMP: Auxiliary to PYPDFU and PYPTIS.
+C...Giving the x*f pdf of a companion quark, with its partner at XS,
+C...using an approximate gluon density like (1-X)^NPOW/X. The value
+C...corresponds to an unrescaled range between 0 and 1-X.
+
+ FUNCTION PYFCMP(XC,XS,NPOW)
+ IMPLICIT NONE
+ DOUBLE PRECISION XC, XS, Y, PYFCMP,FAC
+ INTEGER NPOW
+
+ PYFCMP=0D0
+C...Parent gluon momentum fraction
+ Y=XC+XS
+ IF (Y.GE.1D0) RETURN
+C...Common factor (includes factor XC, since PYFCMP=x*f)
+ FAC=3D0*XC*XS*(XC**2+XS**2)/(Y**4)
+C...Store normalized companion x*f distribution.
+ IF (NPOW.LE.0) THEN
+ PYFCMP=FAC/(2D0-XS*(3D0-XS*(3D0-2D0*XS)))
+ ELSEIF (NPOW.EQ.1) THEN
+ PYFCMP=FAC*(1D0-Y)/(2D0+XS**2*(-3D0+XS)+3D0*XS*LOG(XS))
+ ELSEIF (NPOW.EQ.2) THEN
+ PYFCMP=FAC*(1D0-Y)**2/(2D0*((1D0-XS)*(1D0+XS*(4D0+XS))
+ & +3D0*XS*(1D0+XS)*LOG(XS)))
+ ELSEIF (NPOW.EQ.3) THEN
+ PYFCMP=FAC*(1D0-Y)**3*2D0/(4D0+27D0*XS-31D0*XS**3
+ & +6D0*XS*LOG(XS)*(3D0+2D0*XS*(3D0+XS)))
+ ELSEIF (NPOW.GE.4) THEN
+ PYFCMP=FAC*(1D0-Y)**4/(2D0*(1D0+2D0*XS)*((1D0-XS)*(1D0+
+ & XS*(10D0+XS))+6D0*XS*LOG(XS)*(1D0+XS)))
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPCMP: Auxiliary to PYPDFU.
+C...Giving the momentum integral of a companion quark, with its
+C...partner at XS, using an approximate gluon density like (1-x)^NPOW/x.
+C...The value corresponds to an unrescaled range between 0 and 1-XS.
+
+ FUNCTION PYPCMP(XS,NPOW)
+ IMPLICIT NONE
+ DOUBLE PRECISION XS, PYPCMP
+ INTEGER NPOW
+ IF (XS.GE.1D0.OR.XS.LE.0D0) THEN
+ PYPCMP=0D0
+ ELSEIF (NPOW.LE.0) THEN
+ PYPCMP=XS*(5D0+XS*(-9D0-2D0*XS*(-3D0+XS))+3D0*LOG(XS))
+ PYPCMP=PYPCMP/((-1D0+XS)*(2D0+XS*(-1D0+2D0*XS)))
+ ELSEIF (NPOW.EQ.1) THEN
+ PYPCMP=-1D0-3D0*XS+(2D0*(-1D0+XS)**2*(1D0+XS+XS**2))
+ & /(2D0+XS**2*(XS-3D0)+3D0*XS*LOG(XS))
+ ELSEIF (NPOW.EQ.2) THEN
+ PYPCMP=XS*((1D0-XS)*(19D0+XS*(43D0+4D0*XS))
+ & +6D0*LOG(XS)*(1D0+6D0*XS+4D0*XS**2))
+ PYPCMP=PYPCMP/(4D0*((XS-1D0)*(1D0+XS*(4D0+XS))
+ & -3D0*XS*LOG(XS)*(1+XS)))
+ ELSEIF (NPOW.EQ.3) THEN
+ PYPCMP=3D0*XS*((XS-1)*(7D0+XS*(28D0+13D0*XS))
+ & -2D0*LOG(XS)*(1D0+XS*(9D0+2D0*XS*(6D0+XS))))
+ PYPCMP=PYPCMP/(4D0+27D0*XS-31D0*XS**3
+ & +6D0*XS*LOG(XS)*(3D0+2D0*XS*(3D0+XS)))
+ ELSE
+ PYPCMP=(-9D0*XS*(XS**2-1D0)*(5D0+XS*(24D0+XS))+12D0*XS*LOG(XS)
+ & *(1D0+2D0*XS)*(1D0+2D0*XS*(5D0+2D0*XS)))
+ PYPCMP=PYPCMP/(8D0*(1D0+2D0*XS)*((XS-1D0)*(1D0+XS*(10D0+XS))
+ & -6D0*XS*LOG(XS)*(1D0+XS)))
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYUPRE
+C...Rearranges contents of the HEPEUP commonblock so that
+C...mothers precede daughters and daughters of a decay are
+C...listed consecutively.
+
+ SUBROUTINE PYUPRE
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...User process event common block.
+ INTEGER MAXNUP
+ PARAMETER (MAXNUP=500)
+ INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+ DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+ COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+ &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+ &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+ SAVE /HEPEUP/
+
+C...Local arrays.
+ DIMENSION NEWPOS(0:MAXNUP),IDUPT(MAXNUP),ISTUPT(MAXNUP),
+ &MOTUPT(2,MAXNUP),ICOUPT(2,MAXNUP),PUPT(5,MAXNUP),
+ &VTIUPT(MAXNUP),SPIUPT(MAXNUP)
+
+C...Check whether a rearrangement is required.
+ NEED=0
+ DO 100 IUP=1,NUP
+ IF(MOTHUP(1,IUP).GT.IUP) NEED=NEED+1
+ 100 CONTINUE
+ DO 110 IUP=2,NUP
+ IF(MOTHUP(1,IUP).LT.MOTHUP(1,IUP-1)) NEED=NEED+1
+ 110 CONTINUE
+
+ IF(NEED.NE.0) THEN
+C...Find the new order that particles should have.
+ NEWPOS(0)=0
+ NNEW=0
+ INEW=-1
+ 120 INEW=INEW+1
+ DO 130 IUP=1,NUP
+ IF(MOTHUP(1,IUP).EQ.NEWPOS(INEW)) THEN
+ NNEW=NNEW+1
+ NEWPOS(NNEW)=IUP
+ ENDIF
+ 130 CONTINUE
+ IF(INEW.LT.NNEW.AND.INEW.LT.NUP) GOTO 120
+ IF(NNEW.NE.NUP) THEN
+ CALL PYERRM(2,
+ & '(PYUPRE:) failed to make sense of mother pointers in HEPEUP')
+ RETURN
+ ENDIF
+
+C...Copy old info into temporary storage.
+ DO 150 I=1,NUP
+ IDUPT(I)=IDUP(I)
+ ISTUPT(I)=ISTUP(I)
+ MOTUPT(1,I)=MOTHUP(1,I)
+ MOTUPT(2,I)=MOTHUP(2,I)
+ ICOUPT(1,I)=ICOLUP(1,I)
+ ICOUPT(2,I)=ICOLUP(2,I)
+ DO 140 J=1,5
+ PUPT(J,I)=PUP(J,I)
+ 140 CONTINUE
+ VTIUPT(I)=VTIMUP(I)
+ SPIUPT(I)=SPINUP(I)
+ 150 CONTINUE
+
+C...Copy info back into HEPEUP in right order.
+ DO 180 I=1,NUP
+ IOLD=NEWPOS(I)
+ IDUP(I)=IDUPT(IOLD)
+ ISTUP(I)=ISTUPT(IOLD)
+ MOTHUP(1,I)=0
+ MOTHUP(2,I)=0
+ DO 160 IMOT=1,I-1
+ IF(MOTUPT(1,IOLD).EQ.NEWPOS(IMOT)) MOTHUP(1,I)=IMOT
+ IF(MOTUPT(2,IOLD).EQ.NEWPOS(IMOT)) MOTHUP(2,I)=IMOT
+ 160 CONTINUE
+ IF(MOTHUP(2,I).GT.0.AND.MOTHUP(2,I).LT.MOTHUP(1,I)) THEN
+ MOTHSW=MOTHUP(1,I)
+ MOTHUP(1,I)=MOTHUP(2,I)
+ MOTHUP(2,I)=MOTHSW
+ ENDIF
+ ICOLUP(1,I)=ICOUPT(1,IOLD)
+ ICOLUP(2,I)=ICOUPT(2,IOLD)
+ DO 170 J=1,5
+ PUP(J,I)=PUPT(J,IOLD)
+ 170 CONTINUE
+ VTIMUP(I)=VTIUPT(IOLD)
+ SPINUP(I)=SPIUPT(IOLD)
+ 180 CONTINUE
+ ENDIF
+
+c...If incoming particles are massive recalculate to put them massless.
+ IF(PUP(5,1).NE.0D0.OR.PUP(5,2).NE.0D0) THEN
+ PPLUS=(PUP(4,1)+PUP(3,1))+(PUP(4,2)+PUP(3,2))
+ PMINUS=(PUP(4,1)-PUP(3,1))+(PUP(4,2)-PUP(3,2))
+ PUP(4,1)=0.5D0*PPLUS
+ PUP(3,1)=PUP(4,1)
+ PUP(5,1)=0D0
+ PUP(4,2)=0.5D0*PMINUS
+ PUP(3,2)=-PUP(4,2)
+ PUP(5,2)=0D0
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYADSH
+C...Administers the generation of successive final-state showers
+C...in external processes.
+
+ SUBROUTINE PYADSH(NFIN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement for maximum size of showers.
+ PARAMETER (MAXNUR=1000)
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYPART/,/PYJETS/,/PYCTAG/,/PYDAT1/,/PYPARS/,/PYINT1/
+C...Local array.
+ DIMENSION IBEG(100),KSAV(100,5),PSUM(4),BETA(3)
+
+C...Set primary vertex.
+ DO 100 J=1,5
+ V(MINT(83)+5,J)=0D0
+ V(MINT(83)+6,J)=0D0
+ V(MINT(84)+1,J)=0D0
+ V(MINT(84)+2,J)=0D0
+ 100 CONTINUE
+
+C...Isolate systems of particles with the same mother.
+ NSYS=0
+ IMS=-1
+ DO 140 I=MINT(84)+3,NFIN
+ IM=K(I,3)
+ IF(IM.GT.0.AND.IM.LE.MINT(84)) IM=K(IM,3)
+ IF(IM.NE.IMS) THEN
+ NSYS=NSYS+1
+ IBEG(NSYS)=I
+ IMS=IM
+ ENDIF
+
+C...Set production vertices.
+ IF(IM.LE.MINT(83)+6.OR.(IM.GT.MINT(84).AND.IM.LE.MINT(84)+2))
+ & THEN
+ DO 110 J=1,4
+ V(I,J)=0D0
+ 110 CONTINUE
+ ELSE
+ DO 120 J=1,4
+ V(I,J)=V(IM,J)+V(IM,5)*P(IM,J)/P(IM,5)
+ 120 CONTINUE
+ ENDIF
+ IF(MSTP(125).GE.1) THEN
+ IDOC=I-MSTP(126)+4
+ DO 130 J=1,5
+ V(IDOC,J)=V(I,J)
+ 130 CONTINUE
+ ENDIF
+ 140 CONTINUE
+
+C...End loop over systems. Return if no showers to be performed.
+ IBEG(NSYS+1)=NFIN+1
+ IF(MSTP(71).LE.0) RETURN
+
+C...Loop through systems of particles; check that sensible size.
+ DO 270 ISYS=1,NSYS
+ NSIZ=IBEG(ISYS+1)-IBEG(ISYS)
+ IF(MINT(35).LE.1) THEN
+ IF(NSIZ.EQ.1.AND.ISYS.EQ.1) THEN
+ GOTO 270
+ ELSEIF(NSIZ.LE.1) THEN
+ CALL PYERRM(2,'(PYADSH:) only one particle in system')
+ GOTO 270
+ ELSEIF(NSIZ.GT.80) THEN
+ CALL PYERRM(2,'(PYADSH:) more than 80 particles in system')
+ GOTO 270
+ ENDIF
+ ENDIF
+
+C...Save status codes and daughters of showering particles; reset them.
+ DO 150 J=1,4
+ PSUM(J)=0D0
+ 150 CONTINUE
+ DO 170 II=1,NSIZ
+ I=IBEG(ISYS)-1+II
+ KSAV(II,1)=K(I,1)
+ IF(K(I,1).GT.10) THEN
+ K(I,1)=1
+ IF(KSAV(II,1).EQ.14) K(I,1)=3
+ ENDIF
+ IF(KSAV(II,1).LE.10) THEN
+ ELSEIF(K(I,1).EQ.1) THEN
+ KSAV(II,4)=K(I,4)
+ KSAV(II,5)=K(I,5)
+ K(I,4)=0
+ K(I,5)=0
+ ELSE
+ KSAV(II,4)=MOD(K(I,4),MSTU(5))
+ KSAV(II,5)=MOD(K(I,5),MSTU(5))
+ K(I,4)=K(I,4)-KSAV(II,4)
+ K(I,5)=K(I,5)-KSAV(II,5)
+ ENDIF
+ DO 160 J=1,4
+ PSUM(J)=PSUM(J)+P(I,J)
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...Perform shower.
+ QMAX=SQRT(MAX(0D0,PSUM(4)**2-PSUM(1)**2-PSUM(2)**2-
+ & PSUM(3)**2))
+ IF(ISYS.EQ.1) QMAX=MIN(QMAX,SQRT(PARP(71))*VINT(55))
+ NSAV=N
+ IF(MINT(35).LE.1) THEN
+ IF(NSIZ.EQ.2) THEN
+ if(parj(200).eq.1.) CALL PYSHOWQ(IBEG(ISYS),IBEG(ISYS)+1,QMAX)
+ if(parj(200).ne.1.) CALL PYSHOW(IBEG(ISYS),IBEG(ISYS)+1,QMAX)
+ ELSE
+ if(parj(200).ne.1.) CALL PYSHOW(IBEG(ISYS),-NSIZ,QMAX)
+ if(parj(200).eq.1.) CALL PYSHOWQ(IBEG(ISYS),-NSIZ,QMAX)
+ ENDIF
+
+C...For external processes, first call, also ISR partons radiate.
+C...Can use existing PYPART list, removing partons that radiate later.
+ ELSEIF(ISYS.EQ.1) THEN
+ NPARTN=0
+ DO 175 II=1,NPART
+ IF(IPART(II).LT.IBEG(2).OR.IPART(II).GE.IBEG(NSYS+1)) THEN
+ NPARTN=NPARTN+1
+ IPART(NPARTN)=IPART(II)
+ PTPART(NPARTN)=PTPART(II)
+ ENDIF
+ 175 CONTINUE
+ NPART=NPARTN
+ CALL PYPTFS(1,0.5D0*QMAX,0D0,PTGEN)
+ ELSE
+C...For subsequent calls use the systems excluded above.
+ NPART=NSIZ
+ NPARTD=0
+ DO 180 II=1,NSIZ
+ I=IBEG(ISYS)-1+II
+ IPART(II)=I
+ PTPART(II)=0.5D0*QMAX
+ 180 CONTINUE
+ CALL PYPTFS(2,0.5D0*QMAX,0D0,PTGEN)
+ ENDIF
+
+C...Look up showered copies of original showering particles.
+ DO 260 II=1,NSIZ
+ I=IBEG(ISYS)-1+II
+ IMV=I
+C...Particles without daughters need not be studied.
+ IF(KSAV(II,1).LE.10) GOTO 260
+ IF(N.EQ.NSAV.OR.K(I,1).LE.10) THEN
+ ELSEIF(K(I,1).EQ.11) THEN
+ 190 IMV=MOD(K(IMV,4),MSTU(5))
+ IF(K(IMV,1).EQ.11) GOTO 190
+ ELSE
+ KDA1=MOD(K(I,4),MSTU(5))
+ IF(KDA1.GT.0) THEN
+ IF(K(KDA1,2).EQ.21) KDA1=K(KDA1,5)/MSTU(5)
+ ENDIF
+ KDA2=MOD(K(I,5),MSTU(5))
+ IF(KDA2.GT.0) THEN
+ IF(K(KDA2,2).EQ.21) KDA2=K(KDA2,4)/MSTU(5)
+ ENDIF
+ DO 200 I3=I+1,N
+ IF(K(I3,2).EQ.K(I,2).AND.(I3.EQ.KDA1.OR.I3.EQ.KDA2))
+ & THEN
+ IMV=I3
+ KDA1=MOD(K(I3,4),MSTU(5))
+ IF(KDA1.GT.0) THEN
+ IF(K(KDA1,2).EQ.21) KDA1=K(KDA1,5)/MSTU(5)
+ ENDIF
+ KDA2=MOD(K(I3,5),MSTU(5))
+ IF(KDA2.GT.0) THEN
+ IF(K(KDA2,2).EQ.21) KDA2=K(KDA2,4)/MSTU(5)
+ ENDIF
+ ENDIF
+ 200 CONTINUE
+ ENDIF
+
+C...Restore daughter info of original partons to showered copies.
+ IF(KSAV(II,1).GT.10) K(IMV,1)=KSAV(II,1)
+ IF(KSAV(II,1).LE.10) THEN
+ ELSEIF(K(I,1).EQ.1) THEN
+ K(IMV,4)=KSAV(II,4)
+ K(IMV,5)=KSAV(II,5)
+ ELSE
+ K(IMV,4)=K(IMV,4)+KSAV(II,4)
+ K(IMV,5)=K(IMV,5)+KSAV(II,5)
+ ENDIF
+
+C...Reset mother info of existing daughters to showered copies.
+ DO 210 I3=IBEG(ISYS+1),NFIN
+ IF(K(I3,3).EQ.I) K(I3,3)=IMV
+ IF(K(I3,1).EQ.3.OR.K(I3,1).EQ.14) THEN
+ IF(K(I3,4)/MSTU(5).EQ.I) K(I3,4)=K(I3,4)+MSTU(5)*(IMV-I)
+ IF(K(I3,5)/MSTU(5).EQ.I) K(I3,5)=K(I3,5)+MSTU(5)*(IMV-I)
+ ENDIF
+ 210 CONTINUE
+
+C...Boost all original daughters to new frame of showered copy.
+C...Also update their colour tags.
+ IF(IMV.NE.I) THEN
+ DO 220 J=1,3
+ BETA(J)=(P(IMV,J)-P(I,J))/(P(IMV,4)+P(I,4))
+ 220 CONTINUE
+ FAC=2D0/(1D0+BETA(1)**2+BETA(2)**2+BETA(3)**2)
+ DO 230 J=1,3
+ BETA(J)=FAC*BETA(J)
+ 230 CONTINUE
+ DO 250 I3=IBEG(ISYS+1),NFIN
+ IMO=I3
+ 240 IMO=K(IMO,3)
+ IF(MSTP(128).LE.0) THEN
+ IF(IMO.GT.0.AND.IMO.NE.I.AND.IMO.NE.K(I,3)) GOTO 240
+ IF(IMO.EQ.I.OR.(K(I,3).LE.MINT(84).AND.IMO.EQ.K(I,3)))
+ & THEN
+ CALL PYROBO(I3,I3,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ IF(MCT(I3,1).EQ.MCT(I,1)) MCT(I3,1)=MCT(IMV,1)
+ IF(MCT(I3,2).EQ.MCT(I,2)) MCT(I3,2)=MCT(IMV,2)
+ ENDIF
+ ELSE
+ IF(IMO.EQ.IMV) THEN
+ CALL PYROBO(I3,I3,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ IF(MCT(I3,1).EQ.MCT(I,1)) MCT(I3,1)=MCT(IMV,1)
+ IF(MCT(I3,2).EQ.MCT(I,2)) MCT(I3,2)=MCT(IMV,2)
+ ELSEIF(IMO.GT.0.AND.IMO.NE.I.AND.IMO.NE.K(I,3)) THEN
+ GOTO 240
+ ENDIF
+ ENDIF
+ 250 CONTINUE
+ ENDIF
+ 260 CONTINUE
+
+C...End of loop over showering systems
+ 270 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYVETO
+C...Interface to UPVETO, which allows user to veto event generation
+C...on the parton level, after parton showers but before multiple
+C...interactions, beam remnants and hadronization is added.
+
+ SUBROUTINE PYVETO(IVETO)
+
+C...All real arithmetic in double precision.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+C...Three Pythia functions return integers, so need declaring.
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...PYTHIA commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYPARS/,/PYINT1/
+C...HEPEVT commonblock.
+ PARAMETER (NMXHEP=4000)
+ COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHEP),IDHEP(NMXHEP),
+ &JMOHEP(2,NMXHEP),JDAHEP(2,NMXHEP),PHEP(5,NMXHEP),VHEP(4,NMXHEP)
+ DOUBLE PRECISION PHEP,VHEP
+ SAVE /HEPEVT/
+C...Local array.
+ DIMENSION IRESO(100)
+
+C...Define longitudinal boost from initiator rest frame to cm frame.
+ IF(MINT(35).EQ.3) THEN
+C...The last frame is different depending upon old and new shower
+ GAMMA=1D0
+ GABEZ=0D0
+ ELSE
+ GAMMA=0.5D0*(VINT(141)+VINT(142))/SQRT(VINT(141)*VINT(142))
+ GABEZ=0.5D0*(VINT(141)-VINT(142))/SQRT(VINT(141)*VINT(142))
+ ENDIF
+
+C... Reset counters.
+ NEVHEP=0
+ NHEP=0
+ NRESO=0
+
+C...Oth pass: identify beam and incoming partons
+ DO 140 I=MINT(83)+1,MINT(83)+6
+ ISTORE=0
+C IF(K(I,2).EQ.94.OR.K(I,2).EQ.0) THEN
+ IF(K(I,2).EQ.94) THEN
+
+ ELSE
+ ISTORE=1
+ NHEP=NHEP+1
+ II=NHEP
+ NRESO=NRESO+1
+ IRESO(NRESO)=I
+ IMOTH=K(I,3)
+ ENDIF
+ IF(ISTORE.EQ.1) THEN
+C...Copy parton info, boosting momenta along z axis to cm frame.
+ ISTHEP(II)=2
+ IDHEP(II)=K(I,2)
+ PHEP(1,II)=P(I,1)
+ PHEP(2,II)=P(I,2)
+ IF(II.GT.2) THEN
+ PHEP(3,II)=GAMMA*P(I,3)+GABEZ*P(I,4)
+ PHEP(4,II)=GAMMA*P(I,4)+GABEZ*P(I,3)
+ ELSE
+ PHEP(3,II)=P(I,3)
+ PHEP(4,II)=P(I,4)
+ ENDIF
+ PHEP(5,II)=P(I,5)
+C...Store one mother. Rest of history and vertex info zeroed.
+ JMOHEP(1,II)=IMOTH
+ JMOHEP(2,II)=0
+ JDAHEP(1,II)=0
+ JDAHEP(2,II)=0
+ VHEP(1,II)=0D0
+ VHEP(2,II)=0D0
+ VHEP(3,II)=0D0
+ VHEP(4,II)=0D0
+ ENDIF
+ 140 CONTINUE
+
+C...First pass: identify final locations of resonances
+C...and of their daughters before showering.
+ DO 150 I=MINT(84)+3,N
+ ISTORE=0
+ IMOTH=0
+
+C...Skip shower CM frame documentation lines.
+ IF(K(I,2).EQ.94) THEN
+
+C... Store a new intermediate product, when mother in documentation.
+ ELSEIF(MSTP(128).EQ.0.AND.K(I,3).GT.MINT(83)+6.AND.
+ & K(I,3).LE.MINT(84)) THEN
+ ISTORE=1
+ NHEP=NHEP+1
+ II=NHEP
+ NRESO=NRESO+1
+ IRESO(NRESO)=I
+ IMOTH=K(K(I,3),3)
+
+C... Store a new intermediate product, when mother in main section.
+ ELSEIF(MSTP(128).EQ.1.AND.K(I-MINT(84)+MINT(83)+4,1).EQ.21.AND.
+ & K(I-MINT(84)+MINT(83)+4,2).EQ.K(I,2)) THEN
+ ISTORE=1
+ NHEP=NHEP+1
+ II=NHEP
+ NRESO=NRESO+1
+ IRESO(NRESO)=I
+ IMOTH=MAX(0,K(I-MINT(84)+MINT(83)+4,3))
+ ENDIF
+
+ IF(ISTORE.EQ.1) THEN
+C...Copy parton info, boosting momenta along z axis to cm frame.
+ ISTHEP(II)=2
+ IDHEP(II)=K(I,2)
+ PHEP(1,II)=P(I,1)
+ PHEP(2,II)=P(I,2)
+ PHEP(3,II)=GAMMA*P(I,3)+GABEZ*P(I,4)
+ PHEP(4,II)=GAMMA*P(I,4)+GABEZ*P(I,3)
+ PHEP(5,II)=P(I,5)
+C...Store one mother. Rest of history and vertex info zeroed.
+ JMOHEP(1,II)=IMOTH
+ JMOHEP(2,II)=0
+ JDAHEP(1,II)=I
+ JDAHEP(2,II)=0
+ VHEP(1,II)=0D0
+ VHEP(2,II)=0D0
+ VHEP(3,II)=0D0
+ VHEP(4,II)=0D0
+ ENDIF
+ 150 CONTINUE
+
+C...Second pass: identify current set of "final" partons.
+ DO 200 I=MINT(84)+3,N
+ ISTORE=0
+ IMOTH=0
+
+C...Store a final parton.
+ IF(K(I,1).GE.1.AND.K(I,1).LE.10) THEN
+ ISTORE=1
+ NHEP=NHEP+1
+ II=NHEP
+C..Trace it back through shower, to check if from documented particle.
+ IHIST=I
+ ISAVE=IHIST
+ 160 CONTINUE
+ IF(IHIST.GT.MINT(84)) THEN
+ IF(K(IHIST,2).EQ.94) IHIST=K(IHIST,3)+(ISAVE-1-IHIST)
+ DO 170 IRI=1,NRESO
+ IF(IHIST.EQ.IRESO(IRI)) IMOTH=IRI
+ 170 CONTINUE
+ ISAVE=IHIST
+ IHIST=K(IHIST,3)
+ IF(IMOTH.EQ.0) GOTO 160
+ ELSEIF(IHIST.LE.4) THEN
+ IF(IHIST.EQ.1.OR.IHIST.EQ.2) THEN
+ ISTORE=0
+ NHEP=NHEP-1
+ ELSE
+ IMOTH=IHIST
+ ENDIF
+ ENDIF
+ ENDIF
+
+ IF(ISTORE.EQ.1) THEN
+C...Copy parton info, boosting momenta along z axis to cm frame.
+ ISTHEP(II)=1
+ IDHEP(II)=K(I,2)
+ PHEP(1,II)=P(I,1)
+ PHEP(2,II)=P(I,2)
+ PHEP(3,II)=GAMMA*P(I,3)+GABEZ*P(I,4)
+ PHEP(4,II)=GAMMA*P(I,4)+GABEZ*P(I,3)
+ PHEP(5,II)=P(I,5)
+C...Store one mother. Rest of history and vertex info zeroed.
+ JMOHEP(1,II)=IMOTH
+ JMOHEP(2,II)=0
+ JDAHEP(1,II)=0
+ JDAHEP(2,II)=0
+ VHEP(1,II)=0D0
+ VHEP(2,II)=0D0
+ VHEP(3,II)=0D0
+ VHEP(4,II)=0D0
+ ENDIF
+ 200 CONTINUE
+
+C...Call user-written routine to decide whether to keep events.
+ CALL UPVETO(IVETO)
+
+ RETURN
+ END
+C*********************************************************************
+
+C...PYRESD
+C...Allows resonances to decay (including parton showers for hadronic
+C...channels).
+
+ SUBROUTINE PYRESD(IRES)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Parameter statement for maximum size of showers.
+ PARAMETER (MAXNUR=1000)
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ SAVE /PYPART/,/PYJETS/,/PYCTAG/,/PYDAT1/,/PYDAT2/,/PYDAT3/,
+ &/PYSUBS/,/PYPARS/,/PYINT1/,/PYINT2/,/PYINT4/
+C...Local arrays and complex and character variables.
+ DIMENSION IREF(50,8),KDCY(3),KFL1(3),KFL2(3),KFL3(3),KEQL(3),
+ &KCQM(3),KCQ1(3),KCQ2(3),KCQ3(3),NSD(3),PMMN(3),ILIN(6),
+ &HGZ(3,3),COUP(6,4),CORL(2,2,2),PK(6,4),PKK(6,6),CTHE(3),
+ &PHI(3),WDTP(0:400),WDTE(0:400,0:5),DPMO(5),XM(5),VDCY(4),
+ &ITJUNC(3),CTM2(3),KCQ(0:10),IANT(3),ITRI(3),IOCT(3)
+ COMPLEX FGK,HA(6,6),HC(6,6)
+ REAL TIR,UIR
+ CHARACTER CODE*9,MASS*9
+
+C...The F, Xi and Xj functions of Gunion and Kunszt
+C...(Phys. Rev. D33, 665, plus errata from the authors).
+ FGK(I1,I2,I3,I4,I5,I6)=4.*HA(I1,I3)*HC(I2,I6)*(HA(I1,I5)*
+ &HC(I1,I4)+HA(I3,I5)*HC(I3,I4))
+ DIGK(DT,DU)=-4D0*D34*D56+DT*(3D0*DT+4D0*DU)+DT**2*(DT*DU/
+ &(D34*D56)-2D0*(1D0/D34+1D0/D56)*(DT+DU)+2D0*(D34/D56+D56/D34))
+ DJGK(DT,DU)=8D0*(D34+D56)**2-8D0*(D34+D56)*(DT+DU)-6D0*DT*DU-
+ &2D0*DT*DU*(DT*DU/(D34*D56)-2D0*(1D0/D34+1D0/D56)*(DT+DU)+
+ &2D0*(D34/D56+D56/D34))
+
+C...Some general constants.
+ XW=PARU(102)
+ XWV=XW
+ IF(MSTP(8).GE.2) XW=1D0-(PMAS(24,1)/PMAS(23,1))**2
+ XW1=1D0-XW
+ SQMZ=PMAS(23,1)**2
+
+ GMMZ=PMAS(23,1)*PMAS(23,2)
+ SQMW=PMAS(24,1)**2
+ GMMW=PMAS(24,1)*PMAS(24,2)
+ SH=VINT(44)
+
+C...Boost and rotate to rest frame of incoming partons,
+C...to get proper amount of smearing of decay angles.
+ IBST=0
+ IF(IRES.EQ.0) THEN
+ IBST=1
+ ETOTIN=P(MINT(84)+1,4)+P(MINT(84)+2,4)
+ BEXIN=(P(MINT(84)+1,1)+P(MINT(84)+2,1))/ETOTIN
+ BEYIN=(P(MINT(84)+1,2)+P(MINT(84)+2,2))/ETOTIN
+ BEZIN=(P(MINT(84)+1,3)+P(MINT(84)+2,3))/ETOTIN
+ CALL PYROBO(MINT(83)+7,N,0D0,0D0,-BEXIN,-BEYIN,-BEZIN)
+ PHIIN=PYANGL(P(MINT(84)+1,1),P(MINT(84)+1,2))
+ CALL PYROBO(MINT(83)+7,N,0D0,-PHIIN,0D0,0D0,0D0)
+ THEIN=PYANGL(P(MINT(84)+1,3),P(MINT(84)+1,1))
+ CALL PYROBO(MINT(83)+7,N,-THEIN,0D0,0D0,0D0,0D0)
+ ENDIF
+
+C...Reset original resonance configuration.
+ DO 100 JT=1,8
+ IREF(1,JT)=0
+ 100 CONTINUE
+
+C...Define initial one, two or three objects for subprocess.
+ IHDEC=0
+ IF(IRES.EQ.0) THEN
+ ISUB=MINT(1)
+ IF(ISET(ISUB).EQ.1.OR.ISET(ISUB).EQ.3) THEN
+ IREF(1,1)=MINT(84)+2+ISET(ISUB)
+ IREF(1,4)=MINT(83)+6+ISET(ISUB)
+ JTMAX=1
+ ELSEIF(ISET(ISUB).EQ.2.OR.ISET(ISUB).EQ.4) THEN
+ IREF(1,1)=MINT(84)+1+ISET(ISUB)
+ IREF(1,2)=MINT(84)+2+ISET(ISUB)
+ IREF(1,4)=MINT(83)+5+ISET(ISUB)
+ IREF(1,5)=MINT(83)+6+ISET(ISUB)
+ JTMAX=2
+ ELSEIF(ISET(ISUB).EQ.5) THEN
+ IREF(1,1)=MINT(84)+3
+ IREF(1,2)=MINT(84)+4
+ IREF(1,3)=MINT(84)+5
+ IREF(1,4)=MINT(83)+7
+ IREF(1,5)=MINT(83)+8
+ IREF(1,6)=MINT(83)+9
+ JTMAX=3
+ ENDIF
+
+C...Define original resonance for odd cases.
+ ELSE
+ ISUB=0
+ IF(K(IRES,2).EQ.25.OR.K(IRES,2).EQ.35.OR.K(IRES,2).EQ.36)
+ & IHDEC=1
+ IF(IHDEC.EQ.1) ISUB=3
+ IREF(1,1)=IRES
+ IREF(1,4)=K(IRES,3)
+ IRESTM=IRES
+ IF(IREF(1,4).GT.MINT(84)) THEN
+ 110 ITMPMO=IREF(1,4)
+ IF(K(ITMPMO,2).EQ.94) THEN
+ IREF(1,4)=K(ITMPMO,3)+(IRESTM-ITMPMO-1)
+ IF(K(IREF(1,4),3).LE.MINT(84)) IREF(1,4)=K(IREF(1,4),3)
+ ELSEIF(K(ITMPMO,2).EQ.K(IRES,2)) THEN
+ IRESTM=ITMPMO
+C...Explicitly check that reference particle exists, otherwise stop recursion
+ IF(ITMPMO.GT.0.AND.K(ITMPMO,3).GT.0) THEN
+ IREF(1,4)=K(ITMPMO,3)
+ GOTO 110
+ ENDIF
+ ENDIF
+ ENDIF
+ IF(IREF(1,4).GT.MINT(84)) THEN
+ EMATCH=1D10
+ IREF14=IREF(1,4)
+ DO 120 II=MINT(83)+7,MINT(83)+MINT(4)
+ IF(K(II,2).EQ.K(IRES,2).AND.ABS(P(II,4)-P(IREF14,4)).LT.
+ & EMATCH) THEN
+ IREF(1,4)=II
+ EMATCH=ABS(P(II,4)-P(IREF14,4))
+ ENDIF
+ 120 CONTINUE
+ ENDIF
+ JTMAX=1
+ ENDIF
+
+C...Check if initial resonance has been moved (in resonance + jet).
+ DO 140 JT=1,3
+ IF(IREF(1,JT).GT.0) THEN
+ IF(K(IREF(1,JT),1).GT.10) THEN
+ KFA=IABS(K(IREF(1,JT),2))
+ IF(KFA.GE.6.AND.KCHG(PYCOMP(KFA),2).NE.0) THEN
+ KDA1=MOD(K(IREF(1,JT),4),MSTU(5))
+ KDA2=MOD(K(IREF(1,JT),5),MSTU(5))
+ IF(KDA1.GT.IREF(1,JT).AND.KDA1.LE.N) THEN
+ IF(K(KDA1,2).EQ.21) KDA1=K(KDA1,5)/MSTU(5)
+ ENDIF
+ IF(KDA2.GT.IREF(1,JT).AND.KDA2.LE.N) THEN
+ IF(K(KDA2,2).EQ.21) KDA2=K(KDA2,4)/MSTU(5)
+ ENDIF
+ DO 130 I=IREF(1,JT)+1,N
+ IF(K(I,2).EQ.K(IREF(1,JT),2).AND.(I.EQ.KDA1.OR.
+ & I.EQ.KDA2)) THEN
+ IREF(1,JT)=I
+ KDA1=MOD(K(IREF(1,JT),4),MSTU(5))
+ KDA2=MOD(K(IREF(1,JT),5),MSTU(5))
+ IF(KDA1.GT.IREF(1,JT).AND.KDA1.LE.N) THEN
+ IF(K(KDA1,2).EQ.21) KDA1=K(KDA1,5)/MSTU(5)
+ ENDIF
+ IF(KDA2.GT.IREF(1,JT).AND.KDA2.LE.N) THEN
+ IF(K(KDA2,2).EQ.21) KDA2=K(KDA2,4)/MSTU(5)
+ ENDIF
+ ENDIF
+ 130 CONTINUE
+ ELSE
+ KDA=MOD(K(IREF(1,JT),4),MSTU(5))
+ IF(MWID(PYCOMP(KFA)).NE.0.AND.KDA.GT.1) IREF(1,JT)=KDA
+ ENDIF
+ ENDIF
+ ENDIF
+ 140 CONTINUE
+
+C...Set decay vertex for initial resonances
+ DO 160 JT=1,JTMAX
+ DO 150 I=1,4
+ V(IREF(1,JT),I)=0D0
+ 150 CONTINUE
+ 160 CONTINUE
+
+C...Loop over decay history.
+ NP=1
+ IP=0
+ 170 IP=IP+1
+ NINH=0
+ JTMAX=2
+ IF(IREF(IP,2).EQ.0) JTMAX=1
+ IF(IREF(IP,3).NE.0) JTMAX=3
+ IT4=0
+ NSAV=N
+
+C...Check for Higgs which appears as decay product of user-process.
+ IF(ISUB.EQ.0) THEN
+ IHDEC=0
+ IF(IREF(IP,7).EQ.25.OR.IREF(IP,7).EQ.35.OR.IREF(IP,7)
+ & .EQ.36) IHDEC=1
+ IF(IHDEC.EQ.1) ISUB=3
+ ENDIF
+
+C...Start treatment of one, two or three resonances in parallel.
+ 180 N=NSAV
+ DO 340 JT=1,JTMAX
+ ID=IREF(IP,JT)
+ KDCY(JT)=0
+ KFL1(JT)=0
+ KFL2(JT)=0
+ KFL3(JT)=0
+ KEQL(JT)=0
+ NSD(JT)=ID
+ ITJUNC(JT)=0
+
+C...Check whether particle can/is allowed to decay.
+ IF(ID.EQ.0) GOTO 330
+ KFA=IABS(K(ID,2))
+ KCA=PYCOMP(KFA)
+ IF(MWID(KCA).EQ.0) GOTO 330
+ IF(K(ID,1).GT.10.OR.MDCY(KCA,1).EQ.0) GOTO 330
+ IF(KFA.EQ.6.OR.KFA.EQ.7.OR.KFA.EQ.8.OR.KFA.EQ.17.OR.
+ & KFA.EQ.18) IT4=IT4+1
+ K(ID,4)=MSTU(5)*(K(ID,4)/MSTU(5))
+ K(ID,5)=MSTU(5)*(K(ID,5)/MSTU(5))
+
+C...Choose lifetime and determine decay vertex.
+ IF(K(ID,1).EQ.5) THEN
+ V(ID,5)=0D0
+ ELSEIF(K(ID,1).NE.4) THEN
+ V(ID,5)=-PMAS(KCA,4)*LOG(PYR(0))
+ ENDIF
+ DO 190 J=1,4
+ VDCY(J)=V(ID,J)+V(ID,5)*P(ID,J)/P(ID,5)
+ 190 CONTINUE
+
+C...Determine whether decay allowed or not.
+ MOUT=0
+ IF(MSTJ(22).EQ.2) THEN
+ IF(PMAS(KCA,4).GT.PARJ(71)) MOUT=1
+ ELSEIF(MSTJ(22).EQ.3) THEN
+ IF(VDCY(1)**2+VDCY(2)**2+VDCY(3)**2.GT.PARJ(72)**2) MOUT=1
+ ELSEIF(MSTJ(22).EQ.4) THEN
+ IF(VDCY(1)**2+VDCY(2)**2.GT.PARJ(73)**2) MOUT=1
+ IF(ABS(VDCY(3)).GT.PARJ(74)) MOUT=1
+ ENDIF
+ IF(MOUT.EQ.1.AND.K(ID,1).NE.5) THEN
+ K(ID,1)=4
+ GOTO 330
+ ENDIF
+
+C...Info for selection of decay channel: sign, pairings.
+ IF(KCHG(KCA,3).EQ.0) THEN
+ IPM=2
+ ELSE
+ IPM=(5-ISIGN(1,K(ID,2)))/2
+ ENDIF
+ KFB=0
+ IF(JTMAX.EQ.2) THEN
+ KFB=IABS(K(IREF(IP,3-JT),2))
+ ELSEIF(JTMAX.EQ.3) THEN
+ JT2=JT+1-3*(JT/3)
+ KFB=IABS(K(IREF(IP,JT2),2))
+ IF(KFB.NE.KFA) THEN
+ JT2=JT+2-3*((JT+1)/3)
+ KFB=IABS(K(IREF(IP,JT2),2))
+ ENDIF
+ ENDIF
+
+C...Select decay channel.
+ IF(ISUB.EQ.1.OR.ISUB.EQ.15.OR.ISUB.EQ.19.OR.ISUB.EQ.22.OR.
+ & ISUB.EQ.30.OR.ISUB.EQ.35.OR.ISUB.EQ.141) MINT(61)=1
+ CALL PYWIDT(KFA,P(ID,5)**2,WDTP,WDTE)
+ WDTE0S=WDTE(0,1)+WDTE(0,IPM)+WDTE(0,4)
+ IF(KFB.EQ.KFA) WDTE0S=WDTE0S+WDTE(0,5)
+ IF(WDTE0S.LE.0D0) GOTO 330
+ RKFL=WDTE0S*PYR(0)
+ IDL=0
+ 200 IDL=IDL+1
+ IDC=IDL+MDCY(KCA,2)-1
+ RKFL=RKFL-(WDTE(IDL,1)+WDTE(IDL,IPM)+WDTE(IDL,4))
+ IF(KFB.EQ.KFA) RKFL=RKFL-WDTE(IDL,5)
+ IF(IDL.LT.MDCY(KCA,3).AND.RKFL.GT.0D0) GOTO 200
+
+C...Read out flavours and colour charges of decay channel chosen.
+ KCQM(JT)=KCHG(KCA,2)*ISIGN(1,K(ID,2))
+ IF(KCQM(JT).EQ.-2) KCQM(JT)=2
+ KFL1(JT)=KFDP(IDC,1)*ISIGN(1,K(ID,2))
+ KFC1A=PYCOMP(IABS(KFL1(JT)))
+ IF(KCHG(KFC1A,3).EQ.0) KFL1(JT)=IABS(KFL1(JT))
+ KCQ1(JT)=KCHG(KFC1A,2)*ISIGN(1,KFL1(JT))
+ IF(KCQ1(JT).EQ.-2) KCQ1(JT)=2
+ KFL2(JT)=KFDP(IDC,2)*ISIGN(1,K(ID,2))
+ KFC2A=PYCOMP(IABS(KFL2(JT)))
+ IF(KCHG(KFC2A,3).EQ.0) KFL2(JT)=IABS(KFL2(JT))
+ KCQ2(JT)=KCHG(KFC2A,2)*ISIGN(1,KFL2(JT))
+ IF(KCQ2(JT).EQ.-2) KCQ2(JT)=2
+ KFL3(JT)=KFDP(IDC,3)*ISIGN(1,K(ID,2))
+ KCQ3(JT)=0
+ IF(KFL3(JT).NE.0) THEN
+ KFC3A=PYCOMP(IABS(KFL3(JT)))
+ IF(KCHG(KFC3A,3).EQ.0) KFL3(JT)=IABS(KFL3(JT))
+ KCQ3(JT)=KCHG(KFC3A,2)*ISIGN(1,KFL3(JT))
+ IF(KCQ3(JT).EQ.-2) KCQ3(JT)=2
+ ENDIF
+
+C...Set/save further info on channel.
+ KDCY(JT)=1
+ IF(KFB.EQ.KFA) KEQL(JT)=MDME(IDC,1)
+ NSD(JT)=N
+ HGZ(JT,1)=VINT(111)
+ HGZ(JT,2)=VINT(112)
+ HGZ(JT,3)=VINT(114)
+ JTZ=JT
+
+C...Select masses; to begin with assume resonances narrow.
+ DO 220 I=1,3
+ P(N+I,5)=0D0
+ PMMN(I)=0D0
+ IF(I.EQ.1) THEN
+ KFLW=IABS(KFL1(JT))
+ KCW=KFC1A
+ ELSEIF(I.EQ.2) THEN
+ KFLW=IABS(KFL2(JT))
+ KCW=KFC2A
+ ELSEIF(I.EQ.3) THEN
+ IF(KFL3(JT).EQ.0) GOTO 220
+ KFLW=IABS(KFL3(JT))
+ KCW=KFC3A
+ ENDIF
+ P(N+I,5)=PMAS(KCW,1)
+CMRENNA++
+C...This prevents SUSY/t particles from becoming too light.
+ IF(KFLW/KSUSY1.EQ.1.OR.KFLW/KSUSY1.EQ.2) THEN
+ PMMN(I)=PMAS(KCW,1)
+ DO 210 IDC=MDCY(KCW,2),MDCY(KCW,2)+MDCY(KCW,3)-1
+ IF(MDME(IDC,1).GT.0.AND.BRAT(IDC).GT.1E-4) THEN
+ PMSUM=PMAS(PYCOMP(KFDP(IDC,1)),1)+
+ & PMAS(PYCOMP(KFDP(IDC,2)),1)
+ IF(KFDP(IDC,3).NE.0) PMSUM=PMSUM+
+ & PMAS(PYCOMP(KFDP(IDC,3)),1)
+ PMMN(I)=MIN(PMMN(I),PMSUM)
+ ENDIF
+ 210 CONTINUE
+CMRENNA--
+ ELSEIF(KFLW.EQ.6) THEN
+ PMMN(I)=PMAS(24,1)+PMAS(5,1)
+ ENDIF
+ 220 CONTINUE
+
+C...Check which two out of three are widest.
+ IWID1=1
+ IWID2=2
+ PWID1=PMAS(KFC1A,2)
+ PWID2=PMAS(KFC2A,2)
+ KFLW1=IABS(KFL1(JT))
+ KFLW2=IABS(KFL2(JT))
+ IF(KFL3(JT).NE.0) THEN
+ PWID3=PMAS(KFC3A,2)
+ IF(PWID3.GT.PWID1.AND.PWID2.GE.PWID1) THEN
+ IWID1=3
+ PWID1=PWID3
+ KFLW1=IABS(KFL3(JT))
+ ELSEIF(PWID3.GT.PWID2) THEN
+ IWID2=3
+ PWID2=PWID3
+ KFLW2=IABS(KFL3(JT))
+ ENDIF
+ ENDIF
+
+C...If all narrow then only check that masses consistent.
+ IF(MSTP(42).LE.0.OR.(PWID1.LT.PARP(41).AND.
+ & PWID2.LT.PARP(41))) THEN
+CMRENNA++
+C....Handle near degeneracy cases.
+ IF(KFA/KSUSY1.EQ.1.OR.KFA/KSUSY1.EQ.2) THEN
+ IF(P(N+1,5)+P(N+2,5)+P(N+3,5).GT.P(ID,5)) THEN
+ P(N+1,5)=P(ID,5)-P(N+2,5)-0.5D0
+ IF(P(N+1,5).LT.0D0) P(N+1,5)=0D0
+ ENDIF
+ ENDIF
+CMRENNA--
+ IF(P(N+1,5)+P(N+2,5)+P(N+3,5).GT.P(ID,5)) THEN
+ CALL PYERRM(13,'(PYRESD:) daughter masses too large')
+ MINT(51)=1
+ GOTO 720
+ ELSEIF(P(N+1,5)+P(N+2,5)+P(N+3,5)+PARJ(64).GT.P(ID,5)) THEN
+ CALL PYERRM(3,'(PYRESD:) daughter masses too large')
+ MINT(51)=1
+ GOTO 720
+ ENDIF
+
+C...For three wide resonances select narrower of three
+C...according to BW decoupled from rest.
+ ELSE
+ PMTOT=P(ID,5)
+ IF(KFL3(JT).NE.0) THEN
+ IWID3=6-IWID1-IWID2
+ KFLW3=IABS(KFL1(JT))+IABS(KFL2(JT))+IABS(KFL3(JT))-
+ & KFLW1-KFLW2
+ LOOP=0
+ 230 LOOP=LOOP+1
+ P(N+IWID3,5)=PYMASS(KFLW3)
+ IF(LOOP.LE.10.AND. P(N+IWID3,5).LE.PMMN(IWID3)) GOTO 230
+ PMTOT=PMTOT-P(N+IWID3,5)
+ ENDIF
+C...Select other two correlated within remaining phase space.
+ IF(IP.EQ.1) THEN
+ CKIN45=CKIN(45)
+ CKIN47=CKIN(47)
+ CKIN(45)=MAX(PMMN(IWID1),CKIN(45))
+ CKIN(47)=MAX(PMMN(IWID2),CKIN(47))
+ CALL PYOFSH(2,KFA,KFLW1,KFLW2,PMTOT,P(N+IWID1,5),
+ & P(N+IWID2,5))
+ CKIN(45)=CKIN45
+ CKIN(47)=CKIN47
+ ELSE
+ CKIN(49)=PMMN(IWID1)
+ CKIN(50)=PMMN(IWID2)
+ CALL PYOFSH(5,KFA,KFLW1,KFLW2,PMTOT,P(N+IWID1,5),
+ & P(N+IWID2,5))
+ CKIN(49)=0D0
+ CKIN(50)=0D0
+ ENDIF
+ IF(MINT(51).EQ.1) GOTO 720
+ ENDIF
+
+C...Begin fill decay products, with colour flow for coloured objects.
+ MSTU10=MSTU(10)
+ MSTU(10)=1
+ MSTU(19)=1
+
+C...Three-body decays
+ IF(KFL3(JT).NE.0) THEN
+ DO 250 I=N+1,N+3
+ DO 240 J=1,5
+ K(I,J)=0
+ V(I,J)=0D0
+ 240 CONTINUE
+ MCT(I,1)=0
+ MCT(I,2)=0
+ 250 CONTINUE
+ K(N+1,1)=1
+ K(N+1,2)=KFL1(JT)
+ K(N+2,1)=1
+ K(N+2,2)=KFL2(JT)
+ K(N+3,1)=1
+ K(N+3,2)=KFL3(JT)
+ IDIN=ID
+
+C...Generate kinematics (default is flat)
+ CALL PYTBDY(IDIN)
+
+C...Set generic colour flows whenever unambiguous,
+C...(independently of the order of the decay products)
+C...Sum up total colour content
+ NANT=0
+ NTRI=0
+ NOCT=0
+ KCQ(0)=KCQM(JT)
+ KCQ(1)=KCQ1(JT)
+ KCQ(2)=KCQ2(JT)
+ KCQ(3)=KCQ3(JT)
+ DO 255 J=0,3
+ IF (KCQ(J).EQ.-1) THEN
+ NANT=NANT+1
+ IANT(NANT)=N+J
+ ELSEIF (KCQ(J).EQ.1) THEN
+ NTRI=NTRI+1
+ ITRI(NTRI)=N+J
+ ELSEIF (KCQ(J).EQ.2) THEN
+ NOCT=NOCT+1
+ IOCT(NOCT)=N+J
+ ENDIF
+ 255 CONTINUE
+
+C...Set color flow for generic 1 -> N processes (N arbitrary)
+ IF (NTRI.EQ.0.AND.NANT.EQ.0.AND.NOCT.EQ.0) THEN
+C...All singlets: do nothing
+
+ ELSEIF (NOCT.EQ.2.AND.NTRI.EQ.0.AND.NANT.EQ.0) THEN
+C...Two octets, zero triplets, n singlets:
+ IF (KCQ(0).EQ.2) THEN
+C...8 -> 8 + n(1)
+ K(ID,4)=K(ID,4)+IOCT(2)
+ K(ID,5)=K(ID,5)+IOCT(2)
+ K(IOCT(2),1)=3
+ K(IOCT(2),4)=MSTU(5)*ID
+ K(IOCT(2),5)=MSTU(5)*ID
+ MCT(IOCT(2),1)=MCT(ID,1)
+ MCT(IOCT(2),2)=MCT(ID,2)
+ ELSE
+C...1 -> 8 + 8 + n(1)
+ K(IOCT(1),1)=3
+ K(IOCT(1),4)=MSTU(5)*IOCT(2)
+ K(IOCT(1),5)=MSTU(5)*IOCT(2)
+ K(IOCT(2),1)=3
+ K(IOCT(2),4)=MSTU(5)*IOCT(1)
+ K(IOCT(2),5)=MSTU(5)*IOCT(1)
+ NCT=NCT+1
+ MCT(IOCT(1),1)=NCT
+ MCT(IOCT(2),2)=NCT
+ NCT=NCT+1
+ MCT(IOCT(2),1)=NCT
+ MCT(IOCT(1),2)=NCT
+ ENDIF
+
+ ELSEIF (NTRI+NANT.EQ.2.AND.NOCT.EQ.0) THEN
+C...Two triplets, zero octets, n singlets.
+ IF (KCQ(0).EQ.1) THEN
+C...3 -> 3 + n(1)
+ K(ID,4)=K(ID,4)+ITRI(2)
+ K(ITRI(2),1)=3
+ K(ITRI(2),4)=MSTU(5)*ID
+ MCT(ITRI(2),1)=MCT(ID,1)
+ ELSEIF (KCQ(0).EQ.-1) THEN
+C...3bar -> 3bar + n(1)
+ K(ID,5)=K(ID,5)+IANT(2)
+ K(IANT(2),1)=3
+ K(IANT(2),5)=MSTU(5)*ID
+ MCT(IANT(2),2)=MCT(ID,2)
+ ELSE
+C...1 -> 3 + 3bar + n(1)
+ K(ITRI(1),1)=3
+ K(ITRI(1),4)=MSTU(5)*IANT(1)
+ K(IANT(1),1)=3
+ K(IANT(1),5)=MSTU(5)*ITRI(1)
+ NCT=NCT+1
+ MCT(ITRI(1),1)=NCT
+ MCT(IANT(1),2)=NCT
+ ENDIF
+
+ ELSEIF(NTRI+NANT.EQ.2.AND.NOCT.EQ.1) THEN
+C...Two triplets, one octet, n singlets.
+ IF (KCQ(0).EQ.2) THEN
+C...8 -> 3 + 3bar + n(1)
+ K(ID,4)=K(ID,4)+ITRI(1)
+ K(ID,5)=K(ID,5)+IANT(1)
+ K(ITRI(1),1)=3
+ K(ITRI(1),4)=MSTU(5)*ID
+ K(IANT(1),1)=3
+ K(IANT(1),5)=MSTU(5)*ID
+ MCT(ITRI(1),1)=MCT(ID,1)
+ MCT(IANT(1),2)=MCT(ID,2)
+ ELSEIF (KCQ(0).EQ.1) THEN
+C...3 -> 8 + 3 + n(1)
+ K(ID,4)=K(ID,4)+IOCT(1)
+ K(IOCT(1),1)=3
+ K(IOCT(1),4)=MSTU(5)*ID
+ K(IOCT(1),5)=MSTU(5)*ITRI(2)
+ K(ITRI(2),1)=3
+ K(ITRI(2),4)=MSTU(5)*IOCT(1)
+ MCT(IOCT(1),1)=MCT(ID,1)
+ NCT=NCT+1
+ MCT(IOCT(1),2)=NCT
+ MCT(ITRI(2),1)=NCT
+ ELSEIF (KCQ(0).EQ.-1) THEN
+C...3bar -> 8 + 3bar + n(1)
+ K(ID,5)=K(ID,5)+IOCT(1)
+ K(IOCT(1),1)=3
+ K(IOCT(1),5)=MSTU(5)*ID
+ K(IOCT(1),4)=MSTU(5)*IANT(2)
+ K(IANT(2),1)=3
+ K(IANT(2),5)=MSTU(5)*IOCT(1)
+ MCT(IOCT(1),2)=MCT(ID,2)
+ NCT=NCT+1
+ MCT(IOCT(1),1)=NCT
+ MCT(IANT(2),2)=NCT
+ ELSE
+C...1 -> 3 + 3bar + 8 + n(1)
+ K(ITRI(1),1)=3
+ K(ITRI(1),4)=MSTU(5)*IOCT(1)
+ K(IOCT(1),1)=3
+ K(IOCT(1),5)=MSTU(5)*ITRI(1)
+ K(IOCT(1),4)=MSTU(5)*IANT(1)
+ K(IANT(1),1)=3
+ K(IANT(1),5)=MSTU(5)*IOCT(1)
+ NCT=NCT+1
+ MCT(ITRI(1),1)=NCT
+ MCT(IOCT(1),2)=NCT
+ NCT=NCT+1
+ MCT(IOCT(1),1)=NCT
+ MCT(IANT(1),2)=NCT
+ ENDIF
+CPS-- End of generic cases
+C...(could three octets also be handled?)
+C...(could (some of) the RPV cases be made generic as well?)
+
+C...Special cases (= old treatment)
+C...Set colour flow for t -> W + b + Z.
+ ELSEIF(KFA.EQ.6) THEN
+ K(N+2,1)=3
+ ISID=4
+ IF(KCQM(JT).EQ.-1) ISID=5
+ IDAU=N+2
+ K(ID,ISID)=K(ID,ISID)+IDAU
+ K(IDAU,ISID)=MSTU(5)*ID
+
+C...Set colour flow in three-body decays - programmed as special cases.
+
+ ELSEIF(KFC2A.LE.6) THEN
+ K(N+2,1)=3
+ K(N+3,1)=3
+ ISID=4
+ IF(KFL2(JT).LT.0) ISID=5
+ K(N+2,ISID)=MSTU(5)*(N+3)
+ K(N+3,9-ISID)=MSTU(5)*(N+2)
+C...PS++: Bugfix 16 MAR 2006 for 3-body squark decays (e.g. via SLHA)
+ ELSEIF(KFA.GT.KSUSY1.AND.MOD(KFA,KSUSY1).LT.10
+ & .AND.KFL3(JT).NE.0) THEN
+ KQSUMA=IABS(KCQ1(JT))+IABS(KCQ2(JT))+IABS(KCQ3(JT))
+C...3-body decays of squarks to colour singlets plus one quark
+ IF (KQSUMA.EQ.1) THEN
+C...Find quark
+ IQ=0
+ IF (KCQ1(JT).NE.0) IQ=1
+ IF (KCQ2(JT).NE.0) IQ=2
+ IF (KCQ3(JT).NE.0) IQ=3
+ ISID=4
+ IF (K(N+IQ,2).LT.0) ISID=5
+ K(N+IQ,1)=3
+ K(ID,ISID)=K(ID,ISID)+(N+IQ)
+ K(N+IQ,ISID)=MSTU(5)*ID
+ ENDIF
+C...PS--
+ ELSEIF(KFL1(JT).EQ.KSUSY1+21) THEN
+ K(N+1,1)=3
+ K(N+2,1)=3
+ K(N+3,1)=3
+ ISID=4
+ IF(KFL2(JT).LT.0) ISID=5
+ K(N+1,ISID)=MSTU(5)*(N+2)
+ K(N+1,9-ISID)=MSTU(5)*(N+3)
+ K(N+2,ISID)=MSTU(5)*(N+1)
+ K(N+3,9-ISID)=MSTU(5)*(N+1)
+ ELSEIF(KFA.EQ.KSUSY1+21) THEN
+ K(N+2,1)=3
+ K(N+3,1)=3
+ ISID=4
+ IF(KFL2(JT).LT.0) ISID=5
+ K(ID,ISID)=K(ID,ISID)+(N+2)
+ K(ID,9-ISID)=K(ID,9-ISID)+(N+3)
+ K(N+2,ISID)=MSTU(5)*ID
+ K(N+3,9-ISID)=MSTU(5)*ID
+CMRENNA--
+
+ ELSEIF(KFA.GE.KSUSY1+22.AND.KFA.LE.KSUSY1+37.AND.
+ & IABS(KCQ2(JT)).EQ.1) THEN
+ K(N+2,1)=3
+ K(N+3,1)=3
+ ISID=4
+ IF(KFL2(JT).LT.0) ISID=5
+ K(N+2,ISID)=MSTU(5)*(N+3)
+ K(N+3,9-ISID)=MSTU(5)*(N+2)
+ ENDIF
+
+ NSAV=N
+
+C...Set colour flow in three-body decays with baryon number violation.
+C...Neutralino and chargino decays first.
+ KCQSUM=KCQ1(JT)+KCQ2(JT)+KCQ3(JT)
+ IF(KCQM(JT).EQ.0.AND.IABS(KCQSUM).EQ.3) THEN
+ ITJUNC(JT)=(1+(1-KCQ1(JT))/2)
+ K(N+4,4)=ITJUNC(JT)*MSTU(5)
+C...Insert junction to keep track of colours.
+ IF(KCQ1(JT).NE.0) K(N+1,1)=3
+ IF(KCQ2(JT).NE.0) K(N+2,1)=3
+ IF(KCQ3(JT).NE.0) K(N+3,1)=3
+C...Set special junction codes:
+ K(N+4,1)=42
+ K(N+4,2)=88
+
+C...Order decay products by invariant mass. (will be used in PYSTRF).
+ PM12=P(N+1,4)*P(N+2,4)-P(N+1,1)*P(N+2,1)-P(N+1,2)*P(N+2,2)-
+ & P(N+1,3)*P(N+2,3)
+ PM13=P(N+1,4)*P(N+3,4)-P(N+1,1)*P(N+3,1)-P(N+1,2)*P(N+3,2)-
+ & P(N+1,3)*P(N+3,3)
+ PM23=P(N+2,4)*P(N+3,4)-P(N+2,1)*P(N+3,1)-P(N+2,2)*P(N+3,2)-
+ & P(N+2,3)*P(N+3,3)
+ IF(PM12.LT.PM13.AND.PM12.LT.PM23) THEN
+ K(N+4,4)=N+3+K(N+4,4)
+ K(N+4,5)=N+1+MSTU(5)*(N+2)
+ ELSEIF(PM13.LT.PM23) THEN
+ K(N+4,4)=N+2+K(N+4,4)
+ K(N+4,5)=N+1+MSTU(5)*(N+3)
+ ELSE
+ K(N+4,4)=N+1+K(N+4,4)
+ K(N+4,5)=N+2+MSTU(5)*(N+3)
+ ENDIF
+ DO 260 J=1,5
+ P(N+4,J)=0D0
+ V(N+4,J)=0D0
+ 260 CONTINUE
+C...Connect daughters to junction.
+ DO 270 II=N+1,N+3
+ K(II,4)=0
+ K(II,5)=0
+ K(II,ITJUNC(JT)+3)=MSTU(5)*(N+4)
+ 270 CONTINUE
+C...Particle counter should be stepped up one extra for junction.
+ N=N+1
+
+C...Gluino decays.
+ ELSEIF (KCQM(JT).EQ.2.AND.IABS(KCQSUM).EQ.3) THEN
+ ITJUNC(JT)=(5+(1-KCQ1(JT))/2)
+ K(N+4,4)=ITJUNC(JT)*MSTU(5)
+C...Insert junction to keep track of colours.
+ IF(KCQ1(JT).NE.0) K(N+1,1)=3
+ IF(KCQ2(JT).NE.0) K(N+2,1)=3
+ IF(KCQ3(JT).NE.0) K(N+3,1)=3
+ K(N+4,1)=42
+ K(N+4,2)=88
+ DO 280 J=1,5
+ P(N+4,J)=0D0
+ V(N+4,J)=0D0
+ 280 CONTINUE
+ CTMSUM=0D0
+ DO 290 II=N+1,N+3
+ K(II,4)=0
+ K(II,5)=0
+C...Start by connecting all daughters to junction.
+ K(II,ITJUNC(JT)-1)=MSTU(5)*(N+4)
+C...Only consider colour topologies with off shell resonances.
+ RMQ1=PMAS(PYCOMP(K(II,2)),1)
+ RMRES=PMAS(PYCOMP(KSUSY1+IABS(K(II,2))),1)
+ RMGLU=PMAS(PYCOMP(KSUSY1+21),1)
+ IF (RMGLU-RMQ1.LT.RMRES) THEN
+C...Calculate propagators for each colour topology.
+ RM2Q23=RMGLU**2+RMQ1**2-2D0*(P(II,4)*P(ID,4)+P(II,1)
+ & *P(ID,1)+P(II,2)*P(ID,2)+P(II,3)*P(ID,3))
+ CTM2(II-N)=1D0/(RM2Q23-RMRES**2)**2
+ ELSE
+ CTM2(II-N)=0D0
+ ENDIF
+ CTMSUM=CTMSUM+CTM2(II-N)
+ 290 CONTINUE
+ CTMSUM=PYR(0)*CTMSUM
+C...Select colour topology J, with most off shell least likely.
+ J=0
+ 300 J=J+1
+ CTMSUM=CTMSUM-CTM2(J)
+ IF (CTMSUM.GT.0D0) GOTO 300
+C...The lucky winner gets its colour (anti-colour) directly from gluino.
+ K(N+J,ITJUNC(JT)-1)=MSTU(5)*ID
+ K(ID,ITJUNC(JT)-1)=N+J+(K(ID,ITJUNC(JT)-1)/MSTU(5))*MSTU(5)
+C...The other gluino colour is connected to junction
+ K(ID,10-ITJUNC(JT))=N+4+(K(ID,10-ITJUNC(JT))/MSTU(5))*
+ & MSTU(5)
+ K(N+4,4)=K(N+4,4)+ID
+C...Lastly, connect junction to remaining daughters.
+ K(N+4,5)=N+1+MOD(J,3)+MSTU(5)*(N+1+MOD(J+1,3))
+C...Particle counter should be stepped up one extra for junction.
+ N=N+1
+ ENDIF
+
+C...Update particle counter.
+ N=N+3
+
+C...2) Everything else two-body decay.
+ ELSE
+ CALL PY2ENT(N+1,KFL1(JT),KFL2(JT),P(ID,5))
+ MCT(N-1,1)=0
+ MCT(N-1,2)=0
+ MCT(N,1)=0
+ MCT(N,2)=0
+C...First set colour flow as if mother colour singlet.
+ IF(KCQ1(JT).NE.0) THEN
+ K(N-1,1)=3
+ IF(KCQ1(JT).NE.-1) K(N-1,4)=MSTU(5)*N
+ IF(KCQ1(JT).NE.1) K(N-1,5)=MSTU(5)*N
+ ENDIF
+ IF(KCQ2(JT).NE.0) THEN
+ K(N,1)=3
+ IF(KCQ2(JT).NE.-1) K(N,4)=MSTU(5)*(N-1)
+ IF(KCQ2(JT).NE.1) K(N,5)=MSTU(5)*(N-1)
+ ENDIF
+C...Then redirect colour flow if mother (anti)triplet.
+ IF(KCQM(JT).EQ.0) THEN
+ ELSEIF(KCQM(JT).NE.2) THEN
+ ISID=4
+ IF(KCQM(JT).EQ.-1) ISID=5
+ IDAU=N-1
+ IF(KCQ1(JT).EQ.0.OR.KCQ2(JT).EQ.2) IDAU=N
+ K(ID,ISID)=K(ID,ISID)+IDAU
+ K(IDAU,ISID)=MSTU(5)*ID
+C...Then redirect colour flow if mother octet.
+ ELSEIF(KCQ1(JT).EQ.0.OR.KCQ2(JT).EQ.0) THEN
+ IDAU=N-1
+ IF(KCQ1(JT).EQ.0) IDAU=N
+ K(ID,4)=K(ID,4)+IDAU
+ K(ID,5)=K(ID,5)+IDAU
+ K(IDAU,4)=MSTU(5)*ID
+ K(IDAU,5)=MSTU(5)*ID
+ ELSE
+ ISID=4
+ IF(KCQ1(JT).EQ.-1) ISID=5
+ IF(KCQ1(JT).EQ.2) ISID=INT(4.5D0+PYR(0))
+ K(ID,ISID)=K(ID,ISID)+(N-1)
+ K(ID,9-ISID)=K(ID,9-ISID)+N
+ K(N-1,ISID)=MSTU(5)*ID
+ K(N,9-ISID)=MSTU(5)*ID
+ ENDIF
+
+C...Insert junction
+ IF(IABS(KCQ1(JT)+KCQ2(JT)-KCQM(JT)).EQ.3) THEN
+ N=N+1
+C...~q* mother: type 3 junction. ~q mother: type 4.
+ ITJUNC(JT)=(7+KCQM(JT))/2
+C...Specify junction KF and set colour flow from junction
+ K(N,1)=42
+ K(N,2)=88
+ K(N,3)=ID
+C...Junction type encoded together with mother:
+ K(N,4)=ID+ITJUNC(JT)*MSTU(5)
+ K(N,5)=N-1+MSTU(5)*(N-2)
+C...Zero P and V for junction (V filled later)
+ DO 310 J=1,5
+ P(N,J)=0D0
+ V(N,J)=0D0
+ 310 CONTINUE
+C...Set colour flow from mother to junction
+ K(ID,8-ITJUNC(JT))= N + MSTU(5)*(K(ID,8-ITJUNC(JT))/MSTU(5))
+C...Set colour flow from daughters to junction
+ DO 320 II=N-2,N-1
+ K(II,4) = 0
+ K(II,5) = 0
+C...(Anti-)colour mother is junction.
+ K(II,1+ITJUNC(JT)) = MSTU(5)*(N)
+ 320 CONTINUE
+ ENDIF
+ ENDIF
+
+C...End loop over resonances for daughter flavour and mass selection.
+ MSTU(10)=MSTU10
+ 330 IF(MWID(KCA).NE.0.AND.(KFL1(JT).EQ.0.OR.KFL3(JT).NE.0))
+ & NINH=NINH+1
+ IF(IRES.GT.0.AND.MWID(KCA).NE.0.AND.MDCY(KCA,1).NE.0.AND.
+ & KFL1(JT).EQ.0) THEN
+ WRITE(CODE,'(I9)') K(ID,2)
+ WRITE(MASS,'(F9.3)') P(ID,5)
+ CALL PYERRM(3,'(PYRESD:) Failed to decay particle'//
+ & CODE//' with mass'//MASS)
+ MINT(51)=1
+ GOTO 720
+ ENDIF
+ 340 CONTINUE
+
+C...Check for allowed combinations. Skip if no decays.
+ IF(JTMAX.EQ.1) THEN
+ IF(KDCY(1).EQ.0) GOTO 710
+ ELSEIF(JTMAX.EQ.2) THEN
+ IF(KDCY(1).EQ.0.AND.KDCY(2).EQ.0) GOTO 710
+ IF(KEQL(1).EQ.4.AND.KEQL(2).EQ.4) GOTO 180
+ IF(KEQL(1).EQ.5.AND.KEQL(2).EQ.5) GOTO 180
+ ELSEIF(JTMAX.EQ.3) THEN
+ IF(KDCY(1).EQ.0.AND.KDCY(2).EQ.0.AND.KDCY(3).EQ.0) GOTO 710
+ IF(KEQL(1).EQ.4.AND.KEQL(2).EQ.4) GOTO 180
+ IF(KEQL(1).EQ.4.AND.KEQL(3).EQ.4) GOTO 180
+ IF(KEQL(2).EQ.4.AND.KEQL(3).EQ.4) GOTO 180
+ IF(KEQL(1).EQ.5.AND.KEQL(2).EQ.5) GOTO 180
+ IF(KEQL(1).EQ.5.AND.KEQL(3).EQ.5) GOTO 180
+ IF(KEQL(2).EQ.5.AND.KEQL(3).EQ.5) GOTO 180
+ ENDIF
+
+C...Special case: matrix element option for Z0 decay to quarks.
+ IF(MSTP(48).EQ.1.AND.ISUB.EQ.1.AND.JTMAX.EQ.1.AND.
+ &IABS(MINT(11)).EQ.11.AND.IABS(KFL1(1)).LE.5) THEN
+
+C...Check consistency of MSTJ options set.
+ IF(MSTJ(109).EQ.2.AND.MSTJ(110).NE.1) THEN
+ CALL PYERRM(6,
+ & '(PYRESD:) MSTJ(109) value requires MSTJ(110) = 1')
+ MSTJ(110)=1
+ ENDIF
+ IF(MSTJ(109).EQ.2.AND.MSTJ(111).NE.0) THEN
+ CALL PYERRM(6,
+ & '(PYRESD:) MSTJ(109) value requires MSTJ(111) = 0')
+
+ MSTJ(111)=0
+ ENDIF
+
+C...Select alpha_strong behaviour.
+ MST111=MSTU(111)
+ PAR112=PARU(112)
+ MSTU(111)=MSTJ(108)
+ IF(MSTJ(108).EQ.2.AND.(MSTJ(101).EQ.0.OR.MSTJ(101).EQ.1))
+ & MSTU(111)=1
+ PARU(112)=PARJ(121)
+ IF(MSTU(111).EQ.2) PARU(112)=PARJ(122)
+
+C...Find axial fraction in total cross section for scalar gluon model.
+ PARJ(171)=0D0
+ IF((IABS(MSTJ(101)).EQ.1.AND.MSTJ(109).EQ.1).OR.
+ & (MSTJ(101).EQ.5.AND.MSTJ(49).EQ.1)) THEN
+ POLL=1D0-PARJ(131)*PARJ(132)
+ SFF=1D0/(16D0*XW*XW1)
+ SFW=P(ID,5)**4/((P(ID,5)**2-PARJ(123)**2)**2+
+ & (PARJ(123)*PARJ(124))**2)
+ SFI=SFW*(1D0-(PARJ(123)/P(ID,5))**2)
+ VE=4D0*XW-1D0
+ HF1I=SFI*SFF*(VE*POLL+PARJ(132)-PARJ(131))
+ HF1W=SFW*SFF**2*((VE**2+1D0)*POLL+2D0*VE*
+ & (PARJ(132)-PARJ(131)))
+ KFLC=IABS(KFL1(1))
+ PMQ=PYMASS(KFLC)
+ QF=KCHG(KFLC,1)/3D0
+ VQ=1D0
+ IF(MOD(MSTJ(103),2).EQ.1) VQ=SQRT(MAX(0D0,
+ & 1D0-(2D0*PMQ/P(ID,5))**2))
+ VF=SIGN(1D0,QF)-4D0*QF*XW
+ RFV=0.5D0*VQ*(3D0-VQ**2)*(QF**2*POLL-2D0*QF*VF*HF1I+
+ & VF**2*HF1W)+VQ**3*HF1W
+ IF(RFV.GT.0D0) PARJ(171)=MIN(1D0,VQ**3*HF1W/RFV)
+ ENDIF
+
+C...Choice of jet configuration.
+ CALL PYXJET(P(ID,5),NJET,CUT)
+ KFLC=IABS(KFL1(1))
+ KFLN=21
+ IF(NJET.EQ.4) THEN
+ CALL PYX4JT(NJET,CUT,KFLC,P(ID,5),KFLN,X1,X2,X4,X12,X14)
+ ELSEIF(NJET.EQ.3) THEN
+ CALL PYX3JT(NJET,CUT,KFLC,P(ID,5),X1,X3)
+ ELSE
+ MSTJ(120)=1
+ ENDIF
+
+C...Fill jet configuration; return if incorrect kinematics.
+ NC=N-2
+ IF(NJET.EQ.2.AND.MSTJ(101).NE.5) THEN
+ CALL PY2ENT(NC+1,KFLC,-KFLC,P(ID,5))
+ ELSEIF(NJET.EQ.2) THEN
+ CALL PY2ENT(-(NC+1),KFLC,-KFLC,P(ID,5))
+ ELSEIF(NJET.EQ.3) THEN
+ CALL PY3ENT(NC+1,KFLC,21,-KFLC,P(ID,5),X1,X3)
+ ELSEIF(KFLN.EQ.21) THEN
+ CALL PY4ENT(NC+1,KFLC,KFLN,KFLN,-KFLC,P(ID,5),X1,X2,X4,
+ & X12,X14)
+ ELSE
+ CALL PY4ENT(NC+1,KFLC,-KFLN,KFLN,-KFLC,P(ID,5),X1,X2,X4,
+ & X12,X14)
+ ENDIF
+ IF(MSTU(24).NE.0) THEN
+ MINT(51)=1
+ MSTU(111)=MST111
+ PARU(112)=PAR112
+ GOTO 720
+ ENDIF
+
+C...Angular orientation according to matrix element.
+ IF(MSTJ(106).EQ.1) THEN
+ CALL PYXDIF(NC,NJET,KFLC,P(ID,5),CHIZ,THEZ,PHIZ)
+ IF(MINT(11).LT.0) THEZ=PARU(1)-THEZ
+ CTHE(1)=COS(THEZ)
+ CALL PYROBO(NC+1,N,0D0,CHIZ,0D0,0D0,0D0)
+ CALL PYROBO(NC+1,N,THEZ,PHIZ,0D0,0D0,0D0)
+ ENDIF
+
+C...Boost partons to Z0 rest frame.
+ CALL PYROBO(NC+1,N,0D0,0D0,P(ID,1)/P(ID,4),
+ & P(ID,2)/P(ID,4),P(ID,3)/P(ID,4))
+
+C...Mark decayed resonance and add documentation lines,
+ K(ID,1)=K(ID,1)+10
+ IDOC=MINT(83)+MINT(4)
+ DO 360 I=NC+1,N
+ I1=MINT(83)+MINT(4)+1
+ K(I,3)=I1
+ IF(MSTP(128).GE.1) K(I,3)=ID
+ IF(MSTP(128).LE.1.AND.MINT(4).LT.MSTP(126)) THEN
+ MINT(4)=MINT(4)+1
+ K(I1,1)=21
+ K(I1,2)=K(I,2)
+ K(I1,3)=IREF(IP,4)
+ DO 350 J=1,5
+ P(I1,J)=P(I,J)
+ 350 CONTINUE
+ ENDIF
+ 360 CONTINUE
+
+C...Generate parton shower.
+ IF(MSTJ(101).EQ.5.AND.MINT(35).LE.1) THEN
+ if(parj(200).ne.1.) CALL PYSHOW(N-1,N,P(ID,5))
+ if(parj(200).eq.1.) CALL PYSHOWQ(N-1,N,P(ID,5))
+ ELSEIF(MSTJ(101).EQ.5.AND.MINT(35).GE.2) THEN
+ NPART=2
+ IPART(1)=N-1
+ IPART(2)=N
+ PTPART(1)=0.5D0*P(ID,5)
+ PTPART(2)=PTPART(1)
+ NCT=NCT+1
+ IF(K(N-1,2).GT.0) THEN
+ MCT(N-1,1)=NCT
+ MCT(N,2)=NCT
+ ELSE
+ MCT(N-1,2)=NCT
+ MCT(N,1)=NCT
+ ENDIF
+ CALL PYPTFS(2,0.5D0*P(ID,5),0D0,PTGEN)
+ ENDIF
+
+C... End special case for Z0: skip ahead.
+ MSTU(111)=MST111
+ PARU(112)=PAR112
+ GOTO 700
+ ENDIF
+
+C...Order incoming partons and outgoing resonances.
+ IF(JTMAX.EQ.2.AND.ISUB.NE.0.AND.MSTP(47).GE.1.AND.
+ &NINH.EQ.0) THEN
+ ILIN(1)=MINT(84)+1
+ IF(K(MINT(84)+1,2).GT.0) ILIN(1)=MINT(84)+2
+ IF(K(ILIN(1),2).EQ.21.OR.K(ILIN(1),2).EQ.22)
+ & ILIN(1)=2*MINT(84)+3-ILIN(1)
+ ILIN(2)=2*MINT(84)+3-ILIN(1)
+ IMIN=1
+ IF(IREF(IP,7).EQ.25.OR.IREF(IP,7).EQ.35.OR.IREF(IP,7)
+ & .EQ.36) IMIN=3
+ IMAX=2
+ IORD=1
+ IF(K(IREF(IP,1),2).EQ.23) IORD=2
+ IF(K(IREF(IP,1),2).EQ.24.AND.K(IREF(IP,2),2).EQ.-24) IORD=2
+ IAKIPD=IABS(K(IREF(IP,IORD),2))
+ IF(IAKIPD.EQ.25.OR.IAKIPD.EQ.35.OR.IAKIPD.EQ.36) IORD=3-IORD
+ IF(KDCY(IORD).EQ.0) IORD=3-IORD
+
+C...Order decay products of resonances.
+ DO 370 JT=IORD,3-IORD,3-2*IORD
+ IF(KDCY(JT).EQ.0) THEN
+ ILIN(IMAX+1)=NSD(JT)
+ IMAX=IMAX+1
+ ELSEIF(K(NSD(JT)+1,2).GT.0) THEN
+ ILIN(IMAX+1)=N+2*JT-1
+ ILIN(IMAX+2)=N+2*JT
+ IMAX=IMAX+2
+ K(N+2*JT-1,2)=K(NSD(JT)+1,2)
+ K(N+2*JT,2)=K(NSD(JT)+2,2)
+ ELSE
+ ILIN(IMAX+1)=N+2*JT
+
+ ILIN(IMAX+2)=N+2*JT-1
+ IMAX=IMAX+2
+ K(N+2*JT-1,2)=K(NSD(JT)+1,2)
+ K(N+2*JT,2)=K(NSD(JT)+2,2)
+ ENDIF
+ 370 CONTINUE
+
+C...Find charge, isospin, left- and righthanded couplings.
+ DO 390 I=IMIN,IMAX
+ DO 380 J=1,4
+ COUP(I,J)=0D0
+ 380 CONTINUE
+ KFA=IABS(K(ILIN(I),2))
+ IF(KFA.EQ.0.OR.KFA.GT.20) GOTO 390
+ COUP(I,1)=KCHG(KFA,1)/3D0
+ COUP(I,2)=(-1)**MOD(KFA,2)
+ COUP(I,4)=-2D0*COUP(I,1)*XWV
+ COUP(I,3)=COUP(I,2)+COUP(I,4)
+ 390 CONTINUE
+
+C...Full propagator dependence and flavour correlations for 2 gamma*/Z.
+ IF(ISUB.EQ.22) THEN
+ DO 420 I=3,5,2
+ I1=IORD
+ IF(I.EQ.5) I1=3-IORD
+ DO 410 J1=1,2
+ DO 400 J2=1,2
+ CORL(I/2,J1,J2)=COUP(1,1)**2*HGZ(I1,1)*COUP(I,1)**2/
+ & 16D0+COUP(1,1)*COUP(1,J1+2)*HGZ(I1,2)*COUP(I,1)*
+ & COUP(I,J2+2)/4D0+COUP(1,J1+2)**2*HGZ(I1,3)*
+ & COUP(I,J2+2)**2
+ 400 CONTINUE
+ 410 CONTINUE
+ 420 CONTINUE
+ COWT12=(CORL(1,1,1)+CORL(1,1,2))*(CORL(2,1,1)+CORL(2,1,2))+
+ & (CORL(1,2,1)+CORL(1,2,2))*(CORL(2,2,1)+CORL(2,2,2))
+ COMX12=(CORL(1,1,1)+CORL(1,1,2)+CORL(1,2,1)+CORL(1,2,2))*
+ & (CORL(2,1,1)+CORL(2,1,2)+CORL(2,2,1)+CORL(2,2,2))
+
+ IF(COWT12.LT.PYR(0)*COMX12) GOTO 180
+ ENDIF
+ ENDIF
+
+C...Select angular orientation type - Z'/W' only.
+ MZPWP=0
+ IF(ISUB.EQ.141) THEN
+ IF(PYR(0).LT.PARU(130)) MZPWP=1
+ IF(IP.EQ.2) THEN
+ IF(IABS(K(IREF(2,1),2)).EQ.37) MZPWP=2
+ IAKIR=IABS(K(IREF(2,2),2))
+ IF(IAKIR.EQ.25.OR.IAKIR.EQ.35.OR.IAKIR.EQ.36) MZPWP=2
+ IF(IAKIR.LE.20) MZPWP=2
+ ENDIF
+ IF(IP.GE.3) MZPWP=2
+ ELSEIF(ISUB.EQ.142) THEN
+ IF(PYR(0).LT.PARU(136)) MZPWP=1
+ IF(IP.EQ.2) THEN
+ IAKIR=IABS(K(IREF(2,2),2))
+ IF(IAKIR.EQ.25.OR.IAKIR.EQ.35.OR.IAKIR.EQ.36) MZPWP=2
+ IF(IAKIR.LE.20) MZPWP=2
+ ENDIF
+ IF(IP.GE.3) MZPWP=2
+ ENDIF
+
+C...Select random angles (begin of weighting procedure).
+ 430 DO 440 JT=1,JTMAX
+ IF(KDCY(JT).EQ.0) GOTO 440
+ IF(JTMAX.EQ.1.AND.ISUB.NE.0.AND.IHDEC.EQ.0) THEN
+ CTHE(JT)=VINT(13)+(VINT(33)-VINT(13)+VINT(34)-VINT(14))*PYR(0)
+ IF(CTHE(JT).GT.VINT(33)) CTHE(JT)=CTHE(JT)+VINT(14)-VINT(33)
+ PHI(JT)=VINT(24)
+ ELSE
+ CTHE(JT)=2D0*PYR(0)-1D0
+ PHI(JT)=PARU(2)*PYR(0)
+ ENDIF
+ 440 CONTINUE
+
+ IF(JTMAX.EQ.2.AND.MSTP(47).GE.1.AND.NINH.EQ.0) THEN
+C...Construct massless four-vectors.
+ DO 460 I=N+1,N+4
+ K(I,1)=1
+ DO 450 J=1,5
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 450 CONTINUE
+ 460 CONTINUE
+ DO 470 JT=1,JTMAX
+ IF(KDCY(JT).EQ.0) GOTO 470
+ ID=IREF(IP,JT)
+ P(N+2*JT-1,3)=0.5D0*P(ID,5)
+ P(N+2*JT-1,4)=0.5D0*P(ID,5)
+ P(N+2*JT,3)=-0.5D0*P(ID,5)
+ P(N+2*JT,4)=0.5D0*P(ID,5)
+ CALL PYROBO(N+2*JT-1,N+2*JT,ACOS(CTHE(JT)),PHI(JT),
+ & P(ID,1)/P(ID,4),P(ID,2)/P(ID,4),P(ID,3)/P(ID,4))
+ 470 CONTINUE
+
+C...Store incoming and outgoing momenta, with random rotation to
+C...avoid accidental zeroes in HA expressions.
+ IF(ISUB.NE.0) THEN
+ DO 490 I=IMIN,IMAX
+ K(N+4+I,1)=1
+ P(N+4+I,4)=SQRT(P(ILIN(I),1)**2+P(ILIN(I),2)**2+
+ & P(ILIN(I),3)**2+P(ILIN(I),5)**2)
+ P(N+4+I,5)=P(ILIN(I),5)
+ DO 480 J=1,3
+ P(N+4+I,J)=P(ILIN(I),J)
+ 480 CONTINUE
+ 490 CONTINUE
+ 500 THERR=ACOS(2D0*PYR(0)-1D0)
+ PHIRR=PARU(2)*PYR(0)
+ CALL PYROBO(N+4+IMIN,N+4+IMAX,THERR,PHIRR,0D0,0D0,0D0)
+ DO 520 I=IMIN,IMAX
+ IF(P(N+4+I,1)**2+P(N+4+I,2)**2.LT.1D-4*(P(N+4+I,1)**2+
+ & P(N+4+I,2)**2+P(N+4+I,3)**2)) GOTO 500
+ DO 510 J=1,4
+ PK(I,J)=P(N+4+I,J)
+ 510 CONTINUE
+ 520 CONTINUE
+ ENDIF
+
+C...Calculate internal products.
+ IF(ISUB.EQ.22.OR.ISUB.EQ.23.OR.ISUB.EQ.25.OR.ISUB.EQ.141.OR.
+ & ISUB.EQ.142) THEN
+ DO 540 I1=IMIN,IMAX-1
+ DO 530 I2=I1+1,IMAX
+ HA(I1,I2)=SNGL(SQRT((PK(I1,4)-PK(I1,3))*(PK(I2,4)+
+ & PK(I2,3))/(1D-20+PK(I1,1)**2+PK(I1,2)**2)))*
+ & CMPLX(SNGL(PK(I1,1)),SNGL(PK(I1,2)))-
+ & SNGL(SQRT((PK(I1,4)+PK(I1,3))*(PK(I2,4)-PK(I2,3))/
+ & (1D-20+PK(I2,1)**2+PK(I2,2)**2)))*
+ & CMPLX(SNGL(PK(I2,1)),SNGL(PK(I2,2)))
+ HC(I1,I2)=CONJG(HA(I1,I2))
+ IF(I1.LE.2) HA(I1,I2)=CMPLX(0.,1.)*HA(I1,I2)
+ IF(I1.LE.2) HC(I1,I2)=CMPLX(0.,1.)*HC(I1,I2)
+ HA(I2,I1)=-HA(I1,I2)
+ HC(I2,I1)=-HC(I1,I2)
+ 530 CONTINUE
+ 540 CONTINUE
+ ENDIF
+
+C...Calculate four-products.
+ IF(ISUB.NE.0) THEN
+ DO 560 I=1,2
+ DO 550 J=1,4
+ PK(I,J)=-PK(I,J)
+ 550 CONTINUE
+ 560 CONTINUE
+ DO 580 I1=IMIN,IMAX-1
+ DO 570 I2=I1+1,IMAX
+ PKK(I1,I2)=2D0*(PK(I1,4)*PK(I2,4)-PK(I1,1)*PK(I2,1)-
+ & PK(I1,2)*PK(I2,2)-PK(I1,3)*PK(I2,3))
+ PKK(I2,I1)=PKK(I1,I2)
+ 570 CONTINUE
+ 580 CONTINUE
+ ENDIF
+ ENDIF
+
+ KFAGM=IABS(IREF(IP,7))
+ IF(MSTP(47).LE.0.OR.NINH.NE.0) THEN
+C...Isotropic decay selected by user.
+ WT=1D0
+ WTMAX=1D0
+
+ ELSEIF(JTMAX.EQ.3) THEN
+C...Isotropic decay when three mother particles.
+ WT=1D0
+ WTMAX=1D0
+
+ ELSEIF(IT4.GE.1) THEN
+C... Isotropic decay t -> b + W etc for 4th generation q and l.
+ WT=1D0
+ WTMAX=1D0
+
+ ELSEIF(IREF(IP,7).EQ.25.OR.IREF(IP,7).EQ.35.OR.
+ & IREF(IP,7).EQ.36) THEN
+C...Angular weight for h0/A0 -> Z0 + Z0 or W+ + W- -> 4 quarks/leptons.
+C...CP-odd case added by Kari Ertresvag Myklevoll.
+C...Now also with mixed Higgs CP-states
+ ETA=PARP(25)
+ IF(IP.EQ.1) WTMAX=SH**2
+ IF(IP.GE.2) WTMAX=P(IREF(IP,8),5)**4
+ KFA=IABS(K(IREF(IP,1),2))
+ KFT=IABS(K(IREF(IP,2),2))
+
+ IF((KFA.EQ.KFT).AND.(KFA.EQ.23.OR.KFA.EQ.24).AND.
+ & MSTP(25).GE.3) THEN
+C...For mixed CP states need epsilon product.
+ P10=PK(3,4)
+ P20=PK(4,4)
+ P30=PK(5,4)
+ P40=PK(6,4)
+ P11=PK(3,1)
+ P21=PK(4,1)
+ P31=PK(5,1)
+ P41=PK(6,1)
+ P12=PK(3,2)
+ P22=PK(4,2)
+ P32=PK(5,2)
+ P42=PK(6,2)
+ P13=PK(3,3)
+ P23=PK(4,3)
+ P33=PK(5,3)
+ P43=PK(6,3)
+ EPSI=P10*P21*P32*P43-P10*P21*P33*P42-P10*P22*P31*P43+P10*P22*
+ & P33*P41+P10*P23*P31*P42-P10*P23*P32*P41-P11*P20*P32*P43+P11*
+ & P20*P33*P42+P11*P22*P30*P43-P11*P22*P33*P40-P11*P23*P30*P42+
+ & P11*P23*P32*P40+P12*P20*P31*P43-P12*P20*P33*P41-P12*P21*P30*
+ & P43+P12*P21*P33*P40+P12*P23*P30*P41-P12*P23*P31*P40-P13*P20*
+ & P31*P42+P13*P20*P32*P41+P13*P21*P30*P42-P13*P21*P32*P40-P13*
+ & P22*P30*P41+P13*P22*P31*P40
+C...For mixed CP states need gauge boson masses.
+ XMA=SQRT(MAX(0D0,(PK(3,4)+PK(4,4))**2-(PK(3,1)+PK(4,1))**2-
+ & (PK(3,2)+PK(4,2))**2-(PK(3,3)+PK(4,3))**2))
+ XMB=SQRT(MAX(0D0,(PK(5,4)+PK(6,4))**2-(PK(5,1)+PK(6,1))**2-
+ & (PK(5,2)+PK(6,2))**2-(PK(5,3)+PK(6,3))**2))
+ XMV=PMAS(KFA,1)
+ ENDIF
+
+C...Z decay
+ IF(KFA.EQ.23.AND.KFA.EQ.KFT) THEN
+ KFLF1A=IABS(KFL1(1))
+ EF1=KCHG(KFLF1A,1)/3D0
+ AF1=SIGN(1D0,EF1+0.1D0)
+ VF1=AF1-4D0*EF1*XWV
+ KFLF2A=IABS(KFL1(2))
+ EF2=KCHG(KFLF2A,1)/3D0
+ AF2=SIGN(1D0,EF2+0.1D0)
+ VF2=AF2-4D0*EF2*XWV
+ VA12AS=4D0*VF1*AF1*VF2*AF2/((VF1**2+AF1**2)*(VF2**2+AF2**2))
+ IF((MSTP(25).EQ.0.AND.IREF(IP,7).NE.36).OR.MSTP(25).EQ.1)
+ & THEN
+C...CP-even decay
+ WT=8D0*(1D0+VA12AS)*PKK(3,5)*PKK(4,6)+
+ & 8D0*(1D0-VA12AS)*PKK(3,6)*PKK(4,5)
+ ELSEIF(MSTP(25).LE.2) THEN
+C...CP-odd decay
+ WT=((PKK(3,5)+PKK(4,6))**2 +(PKK(3,6)+PKK(4,5))**2
+ & -2*PKK(3,4)*PKK(5,6)
+ & -2*(PKK(3,5)*PKK(4,6)-PKK(3,6)*PKK(4,5))**2/
+ & (PKK(3,4)*PKK(5,6))
+ & +VA12AS*(PKK(3,5)+PKK(3,6)-PKK(4,5)-PKK(4,6))*
+ & (PKK(3,5)+PKK(4,5)-PKK(3,6)-PKK(4,6)))/(1+VA12AS)
+ ELSE
+C...Mixed CP states.
+ WT=32D0*(0.25D0*((1D0+VA12AS)*PKK(3,5)*PKK(4,6)
+ & +(1D0-VA12AS)*PKK(3,6)*PKK(4,5))
+ & -0.5D0*ETA/XMV**2*EPSI*((1D0+VA12AS)*(PKK(3,5)+PKK(4,6))
+ & -(1D0-VA12AS)*(PKK(3,6)+PKK(4,5)))
+ & +6.25D-2*ETA**2/XMV**4*(-2D0*PKK(3,4)**2*PKK(5,6)**2
+ & -2D0*(PKK(3,5)*PKK(4,6)-PKK(3,6)*PKK(4,5))**2
+ & +PKK(3,4)*PKK(5,6)
+ & *((PKK(3,5)+PKK(4,6))**2+(PKK(3,6)+PKK(4,5))**2)
+ & +VA12AS*PKK(3,4)*PKK(5,6)
+ & *(PKK(3,5)+PKK(3,6)-PKK(4,5)-PKK(4,6))
+ & *(PKK(3,5)-PKK(3,6)+PKK(4,5)-PKK(4,6))))
+ & /(1D0 +2D0*ETA*XMA*XMB/XMV**2
+ & +2D0*(ETA*XMA*XMB/XMV**2)**2*(1D0+VA12AS))
+ ENDIF
+
+C...W decay
+ ELSEIF(KFA.EQ.24.AND.KFA.EQ.KFT) THEN
+ IF((MSTP(25).EQ.0.AND.IREF(IP,7).NE.36).OR.MSTP(25).EQ.1)
+ & THEN
+C...CP-even decay
+ WT=16D0*PKK(3,5)*PKK(4,6)
+ ELSEIF(MSTP(25).LE.2) THEN
+C...CP-odd decay
+ WT=0.5D0*((PKK(3,5)+PKK(4,6))**2 +(PKK(3,6)+PKK(4,5))**2
+ & -2*PKK(3,4)*PKK(5,6)
+ & -2*(PKK(3,5)*PKK(4,6)-PKK(3,6)*PKK(4,5))**2/
+ & (PKK(3,4)*PKK(5,6))
+ & +(PKK(3,5)+PKK(3,6)-PKK(4,5)-PKK(4,6))*
+ & (PKK(3,5)+PKK(4,5)-PKK(3,6)-PKK(4,6)))
+ ELSE
+C...Mixed CP states.
+ WT=32D0*(0.25D0*2D0*PKK(3,5)*PKK(4,6)
+ & -0.5D0*ETA/XMV**2*EPSI*2D0*(PKK(3,5)+PKK(4,6))
+ & +6.25D-2*ETA**2/XMV**4*(-2D0*PKK(3,4)**2*PKK(5,6)**2
+ & -2D0*(PKK(3,5)*PKK(4,6)-PKK(3,6)*PKK(4,5))**2
+ & +PKK(3,4)*PKK(5,6)
+ & *((PKK(3,5)+PKK(4,6))**2+(PKK(3,6)+PKK(4,5))**2)
+ & +PKK(3,4)*PKK(5,6)
+ & *(PKK(3,5)+PKK(3,6)-PKK(4,5)-PKK(4,6))
+ & *(PKK(3,5)-PKK(3,6)+PKK(4,5)-PKK(4,6))))
+ & /(1D0 +2D0*ETA*XMA*XMB/XMV**2
+ & +(2D0*ETA*XMA*XMB/XMV**2)**2)
+ ENDIF
+
+C...No angular correlations in other Higgs decays.
+ ELSE
+ WT=WTMAX
+ ENDIF
+
+ ELSEIF((KFAGM.EQ.6.OR.KFAGM.EQ.7.OR.KFAGM.EQ.8.OR.
+ & KFAGM.EQ.17.OR.KFAGM.EQ.18).AND.IABS(K(IREF(IP,1),2)).EQ.24)
+ & THEN
+C...Angular correlation in f -> f' + W -> f' + 2 quarks/leptons.
+ I1=IREF(IP,8)
+ IF(MOD(KFAGM,2).EQ.0) THEN
+ I2=N+1
+ I3=N+2
+ ELSE
+ I2=N+2
+ I3=N+1
+ ENDIF
+ I4=IREF(IP,2)
+ WT=(P(I1,4)*P(I2,4)-P(I1,1)*P(I2,1)-P(I1,2)*P(I2,2)-
+ & P(I1,3)*P(I2,3))*(P(I3,4)*P(I4,4)-P(I3,1)*P(I4,1)-
+ & P(I3,2)*P(I4,2)-P(I3,3)*P(I4,3))
+ WTMAX=(P(I1,5)**4-P(IREF(IP,1),5)**4)/8D0
+
+ ELSEIF(ISUB.EQ.1) THEN
+C...Angular weight for gamma*/Z0 -> 2 quarks/leptons.
+ EI=KCHG(IABS(MINT(15)),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ EF=KCHG(IABS(KFL1(1)),1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+
+ VF=AF-4D0*EF*XWV
+ RMF=MIN(1D0,4D0*PMAS(IABS(KFL1(1)),1)**2/SH)
+ WT1=EI**2*VINT(111)*EF**2+EI*VI*VINT(112)*EF*VF+
+ & (VI**2+AI**2)*VINT(114)*(VF**2+(1D0-RMF)*AF**2)
+ WT2=RMF*(EI**2*VINT(111)*EF**2+EI*VI*VINT(112)*EF*VF+
+ & (VI**2+AI**2)*VINT(114)*VF**2)
+ WT3=SQRT(1D0-RMF)*(EI*AI*VINT(112)*EF*AF+
+ & 4D0*VI*AI*VINT(114)*VF*AF)
+ WT=WT1*(1D0+CTHE(1)**2)+WT2*(1D0-CTHE(1)**2)+
+ & 2D0*WT3*CTHE(1)*ISIGN(1,MINT(15)*KFL1(1))
+ WTMAX=2D0*(WT1+ABS(WT3))
+
+ ELSEIF(ISUB.EQ.2) THEN
+C...Angular weight for W+/- -> 2 quarks/leptons.
+ RM3=PMAS(IABS(KFL1(1)),1)**2/SH
+ RM4=PMAS(IABS(KFL2(1)),1)**2/SH
+ BE34=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4))
+ WT=(1D0+BE34*CTHE(1)*ISIGN(1,MINT(15)*KFL1(1)))**2-(RM3-RM4)**2
+ WTMAX=4D0
+
+ ELSEIF(ISUB.EQ.15.OR.ISUB.EQ.19) THEN
+C...Angular weight for f + fbar -> gluon/gamma + (gamma*/Z0) ->
+C...-> gluon/gamma + 2 quarks/leptons.
+ CLILF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,3)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,3)/4D0+
+ & COUP(1,3)**2*HGZ(JTZ,3)*COUP(3,3)**2
+ CLIRF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,3)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,4)/4D0+
+ & COUP(1,3)**2*HGZ(JTZ,3)*COUP(3,4)**2
+ CRILF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,4)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,3)/4D0+
+ & COUP(1,4)**2*HGZ(JTZ,3)*COUP(3,3)**2
+ CRIRF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,4)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,4)/4D0+
+ & COUP(1,4)**2*HGZ(JTZ,3)*COUP(3,4)**2
+ WT=(CLILF+CRIRF)*(PKK(1,3)**2+PKK(2,4)**2)+
+ & (CLIRF+CRILF)*(PKK(1,4)**2+PKK(2,3)**2)
+ WTMAX=(CLILF+CLIRF+CRILF+CRIRF)*
+ & ((PKK(1,3)+PKK(1,4))**2+(PKK(2,3)+PKK(2,4))**2)
+
+ ELSEIF(ISUB.EQ.16.OR.ISUB.EQ.20) THEN
+C...Angular weight for f + fbar' -> gluon/gamma + W+/- ->
+C...-> gluon/gamma + 2 quarks/leptons.
+ WT=PKK(1,3)**2+PKK(2,4)**2
+ WTMAX=(PKK(1,3)+PKK(1,4))**2+(PKK(2,3)+PKK(2,4))**2
+
+ ELSEIF(ISUB.EQ.22) THEN
+C...Angular weight for f + fbar -> Z0 + Z0 -> 4 quarks/leptons.
+ S34=P(IREF(IP,IORD),5)**2
+ S56=P(IREF(IP,3-IORD),5)**2
+ TI=PKK(1,3)+PKK(1,4)+S34
+ UI=PKK(1,5)+PKK(1,6)+S56
+ TIR=REAL(TI)
+ UIR=REAL(UI)
+ FGK135=ABS(FGK(1,2,3,4,5,6)/TIR+FGK(1,2,5,6,3,4)/UIR)**2
+ FGK145=ABS(FGK(1,2,4,3,5,6)/TIR+FGK(1,2,5,6,4,3)/UIR)**2
+ FGK136=ABS(FGK(1,2,3,4,6,5)/TIR+FGK(1,2,6,5,3,4)/UIR)**2
+ FGK146=ABS(FGK(1,2,4,3,6,5)/TIR+FGK(1,2,6,5,4,3)/UIR)**2
+ FGK253=ABS(FGK(2,1,5,6,3,4)/TIR+FGK(2,1,3,4,5,6)/UIR)**2
+ FGK263=ABS(FGK(2,1,6,5,3,4)/TIR+FGK(2,1,3,4,6,5)/UIR)**2
+ FGK254=ABS(FGK(2,1,5,6,4,3)/TIR+FGK(2,1,4,3,5,6)/UIR)**2
+ FGK264=ABS(FGK(2,1,6,5,4,3)/TIR+FGK(2,1,4,3,6,5)/UIR)**2
+
+ WT=
+ & CORL(1,1,1)*CORL(2,1,1)*FGK135+CORL(1,1,2)*CORL(2,1,1)*FGK145+
+ & CORL(1,1,1)*CORL(2,1,2)*FGK136+CORL(1,1,2)*CORL(2,1,2)*FGK146+
+ & CORL(1,2,1)*CORL(2,2,1)*FGK253+CORL(1,2,2)*CORL(2,2,1)*FGK263+
+ & CORL(1,2,1)*CORL(2,2,2)*FGK254+CORL(1,2,2)*CORL(2,2,2)*FGK264
+ WTMAX=16D0*((CORL(1,1,1)+CORL(1,1,2))*(CORL(2,1,1)+CORL(2,1,2))+
+ & (CORL(1,2,1)+CORL(1,2,2))*(CORL(2,2,1)+CORL(2,2,2)))*S34*S56*
+ & ((TI**2+UI**2+2D0*SH*(S34+S56))/(TI*UI)-S34*S56*(1D0/TI**2+
+ & 1D0/UI**2))
+
+ ELSEIF(ISUB.EQ.23) THEN
+C...Angular weight for f + fbar' -> Z0 + W+/- -> 4 quarks/leptons.
+ D34=P(IREF(IP,IORD),5)**2
+ D56=P(IREF(IP,3-IORD),5)**2
+ DT=PKK(1,3)+PKK(1,4)+D34
+ DU=PKK(1,5)+PKK(1,6)+D56
+ FACBW=1D0/((SH-SQMW)**2+GMMW**2)
+ CAWZ=COUP(2,3)/DT-2D0*XW1*COUP(1,2)*(SH-SQMW)*FACBW
+ CBWZ=COUP(1,3)/DU+2D0*XW1*COUP(1,2)*(SH-SQMW)*FACBW
+ FGK135=ABS(REAL(CAWZ)*FGK(1,2,3,4,5,6)+
+
+ & REAL(CBWZ)*FGK(1,2,5,6,3,4))
+ FGK136=ABS(REAL(CAWZ)*FGK(1,2,3,4,6,5)+
+ & REAL(CBWZ)*FGK(1,2,6,5,3,4))
+ WT=(COUP(5,3)*FGK135)**2+(COUP(5,4)*FGK136)**2
+ WTMAX=4D0*D34*D56*(COUP(5,3)**2+COUP(5,4)**2)*(CAWZ**2*
+ & DIGK(DT,DU)+CBWZ**2*DIGK(DU,DT)+CAWZ*CBWZ*DJGK(DT,DU))
+
+ ELSEIF(ISUB.EQ.24.OR.ISUB.EQ.171.OR.ISUB.EQ.176) THEN
+C...Angular weight for f + fbar -> Z0 + h0 -> 2 quarks/leptons + h0
+C...(or H0, or A0).
+ WT=((COUP(1,3)*COUP(3,3))**2+(COUP(1,4)*COUP(3,4))**2)*
+ & PKK(1,3)*PKK(2,4)+((COUP(1,3)*COUP(3,4))**2+(COUP(1,4)*
+ & COUP(3,3))**2)*PKK(1,4)*PKK(2,3)
+ WTMAX=(COUP(1,3)**2+COUP(1,4)**2)*(COUP(3,3)**2+COUP(3,4)**2)*
+ & (PKK(1,3)+PKK(1,4))*(PKK(2,3)+PKK(2,4))
+
+ ELSEIF(ISUB.EQ.25) THEN
+C...Angular weight for f + fbar -> W+ + W- -> 4 quarks/leptons.
+ POLR=(1D0+PARJ(132))*(1D0-PARJ(131))
+ POLL=(1D0-PARJ(132))*(1D0+PARJ(131))
+ D34=P(IREF(IP,IORD),5)**2
+ D56=P(IREF(IP,3-IORD),5)**2
+ DT=PKK(1,3)+PKK(1,4)+D34
+ DU=PKK(1,5)+PKK(1,6)+D56
+ FACBW=1D0/((SH-SQMZ)**2+SQMZ*PMAS(23,2)**2)
+ CDWW=(COUP(1,3)*SQMZ*(SH-SQMZ)*FACBW+COUP(1,2))/SH
+ CAWW=CDWW+0.5D0*(COUP(1,2)+1D0)/DT
+ CBWW=CDWW+0.5D0*(COUP(1,2)-1D0)/DU
+ CCWW=COUP(1,4)*SQMZ*(SH-SQMZ)*FACBW/SH
+ FGK135=ABS(REAL(CAWW)*FGK(1,2,3,4,5,6)-
+ & REAL(CBWW)*FGK(1,2,5,6,3,4))
+ FGK253=ABS(FGK(2,1,5,6,3,4)-FGK(2,1,3,4,5,6))
+ IF(MSTP(50).LE.0) THEN
+ WT=FGK135**2+(CCWW*FGK253)**2
+ WTMAX=4D0*D34*D56*(CAWW**2*DIGK(DT,DU)+CBWW**2*DIGK(DU,DT)-
+ & CAWW*CBWW*DJGK(DT,DU)+CCWW**2*(DIGK(DT,DU)+DIGK(DU,DT)-
+ & DJGK(DT,DU)))
+ ELSE
+ WT=POLL*FGK135**2+POLR*(CCWW*FGK253)**2
+ WTMAX=4D0*D34*D56*(POLL*(CAWW**2*DIGK(DT,DU)+
+ & CBWW**2*DIGK(DU,DT)-CAWW*CBWW*DJGK(DT,DU))+
+ & POLR*CCWW**2*(DIGK(DT,DU)+DIGK(DU,DT)-DJGK(DT,DU)))
+ ENDIF
+
+ ELSEIF(ISUB.EQ.26.OR.ISUB.EQ.172.OR.ISUB.EQ.177) THEN
+C...Angular weight for f + fbar' -> W+/- + h0 -> 2 quarks/leptons + h0
+C...(or H0, or A0).
+ WT=PKK(1,3)*PKK(2,4)
+ WTMAX=(PKK(1,3)+PKK(1,4))*(PKK(2,3)+PKK(2,4))
+
+ ELSEIF(ISUB.EQ.30.OR.ISUB.EQ.35) THEN
+C...Angular weight for f + g/gamma -> f + (gamma*/Z0)
+C...-> f + 2 quarks/leptons.
+ CLILF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,3)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,3)/4D0+
+ & COUP(1,3)**2*HGZ(JTZ,3)*COUP(3,3)**2
+ CLIRF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,3)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,4)/4D0+
+ & COUP(1,3)**2*HGZ(JTZ,3)*COUP(3,4)**2
+ CRILF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,4)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,3)/4D0+
+ & COUP(1,4)**2*HGZ(JTZ,3)*COUP(3,3)**2
+ CRIRF=COUP(1,1)**2*HGZ(JTZ,1)*COUP(3,1)**2/16D0+
+ & COUP(1,1)*COUP(1,4)*HGZ(JTZ,2)*COUP(3,1)*COUP(3,4)/4D0+
+ & COUP(1,4)**2*HGZ(JTZ,3)*COUP(3,4)**2
+ IF(K(ILIN(1),2).GT.0) WT=(CLILF+CRIRF)*(PKK(1,4)**2+
+ & PKK(3,5)**2)+(CLIRF+CRILF)*(PKK(1,3)**2+PKK(4,5)**2)
+ IF(K(ILIN(1),2).LT.0) WT=(CLILF+CRIRF)*(PKK(1,3)**2+
+ & PKK(4,5)**2)+(CLIRF+CRILF)*(PKK(1,4)**2+PKK(3,5)**2)
+ WTMAX=(CLILF+CLIRF+CRILF+CRIRF)*
+ & ((PKK(1,3)+PKK(1,4))**2+(PKK(3,5)+PKK(4,5))**2)
+
+ ELSEIF(ISUB.EQ.31.OR.ISUB.EQ.36) THEN
+C...Angular weight for f + g/gamma -> f' + W+/- -> f' + 2 fermions.
+ IF(K(ILIN(1),2).GT.0) WT=PKK(1,4)**2+PKK(3,5)**2
+ IF(K(ILIN(1),2).LT.0) WT=PKK(1,3)**2+PKK(4,5)**2
+ WTMAX=(PKK(1,3)+PKK(1,4))**2+(PKK(3,5)+PKK(4,5))**2
+
+ ELSEIF(ISUB.EQ.71.OR.ISUB.EQ.72.OR.ISUB.EQ.73.OR.ISUB.EQ.76.OR.
+ & ISUB.EQ.77) THEN
+C...Angular weight for V_L1 + V_L2 -> V_L3 + V_L4 (V = Z/W).
+ WT=16D0*PKK(3,5)*PKK(4,6)
+ WTMAX=SH**2
+
+ ELSEIF(ISUB.EQ.110) THEN
+C...Angular weight for f + fbar -> gamma + h0 -> gamma + X is isotropic.
+ WT=1D0
+ WTMAX=1D0
+
+ ELSEIF(ISUB.EQ.141) THEN
+ IF(IP.EQ.1.AND.IABS(KFL1(1)).LT.20) THEN
+C...Angular weight for f + fbar -> gamma*/Z0/Z'0 -> 2 quarks/leptons.
+C...Couplings of incoming flavour.
+ KFAI=IABS(MINT(15))
+ EI=KCHG(KFAI,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ KFAIC=1
+ IF(KFAI.LE.10.AND.MOD(KFAI,2).EQ.0) KFAIC=2
+ IF(KFAI.GT.10.AND.MOD(KFAI,2).NE.0) KFAIC=3
+ IF(KFAI.GT.10.AND.MOD(KFAI,2).EQ.0) KFAIC=4
+ IF(KFAI.LE.2.OR.KFAI.EQ.11.OR.KFAI.EQ.12) THEN
+ VPI=PARU(119+2*KFAIC)
+ API=PARU(120+2*KFAIC)
+ ELSEIF(KFAI.LE.4.OR.KFAI.EQ.13.OR.KFAI.EQ.14) THEN
+ VPI=PARJ(178+2*KFAIC)
+ API=PARJ(179+2*KFAIC)
+ ELSE
+ VPI=PARJ(186+2*KFAIC)
+ API=PARJ(187+2*KFAIC)
+ ENDIF
+C...Couplings of final flavour.
+ KFAF=IABS(KFL1(1))
+ EF=KCHG(KFAF,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ KFAFC=1
+ IF(KFAF.LE.10.AND.MOD(KFAF,2).EQ.0) KFAFC=2
+ IF(KFAF.GT.10.AND.MOD(KFAF,2).NE.0) KFAFC=3
+ IF(KFAF.GT.10.AND.MOD(KFAF,2).EQ.0) KFAFC=4
+ IF(KFAF.LE.2.OR.KFAF.EQ.11.OR.KFAF.EQ.12) THEN
+ VPF=PARU(119+2*KFAFC)
+ APF=PARU(120+2*KFAFC)
+ ELSEIF(KFAF.LE.4.OR.KFAF.EQ.13.OR.KFAF.EQ.14) THEN
+ VPF=PARJ(178+2*KFAFC)
+ APF=PARJ(179+2*KFAFC)
+ ELSE
+ VPF=PARJ(186+2*KFAFC)
+ APF=PARJ(187+2*KFAFC)
+ ENDIF
+C...Asymmetry and weight.
+ ASYM=2D0*(EI*AI*VINT(112)*EF*AF+EI*API*VINT(113)*EF*APF+
+ & 4D0*VI*AI*VINT(114)*VF*AF+(VI*API+VPI*AI)*VINT(115)*
+ & (VF*APF+VPF*AF)+4D0*VPI*API*VINT(116)*VPF*APF)/
+ & (EI**2*VINT(111)*EF**2+EI*VI*VINT(112)*EF*VF+
+ & EI*VPI*VINT(113)*EF*VPF+(VI**2+AI**2)*VINT(114)*
+ & (VF**2+AF**2)+(VI*VPI+AI*API)*VINT(115)*(VF*VPF+AF*APF)+
+ & (VPI**2+API**2)*VINT(116)*(VPF**2+APF**2))
+ WT=1D0+ASYM*CTHE(1)*ISIGN(1,MINT(15)*KFL1(1))+CTHE(1)**2
+ WTMAX=2D0+ABS(ASYM)
+ ELSEIF(IP.EQ.1.AND.IABS(KFL1(1)).EQ.24) THEN
+C...Angular weight for f + fbar -> Z' -> W+ + W-.
+ RM1=P(NSD(1)+1,5)**2/SH
+ RM2=P(NSD(1)+2,5)**2/SH
+ CCOS2=-(1D0/16D0)*((1D0-RM1-RM2)**2-4D0*RM1*RM2)*
+ & (1D0-2D0*RM1-2D0*RM2+RM1**2+RM2**2+10D0*RM1*RM2)
+ CFLAT=-CCOS2+0.5D0*(RM1+RM2)*(1D0-2D0*RM1-2D0*RM2+
+ & (RM2-RM1)**2)
+ WT=CFLAT+CCOS2*CTHE(1)**2
+ WTMAX=CFLAT+MAX(0D0,CCOS2)
+ ELSEIF(IP.EQ.1.AND.(KFL1(1).EQ.25.OR.KFL1(1).EQ.35.OR.
+ & IABS(KFL1(1)).EQ.37)) THEN
+C...Angular weight for f + fbar -> Z' -> h0 + A0, H0 + A0, H+ + H-.
+ WT=1D0-CTHE(1)**2
+ WTMAX=1D0
+ ELSEIF(IP.EQ.1.AND.KFL2(1).EQ.25) THEN
+C...Angular weight for f + fbar -> Z' -> Z0 + h0.
+ RM1=P(NSD(1)+1,5)**2/SH
+ RM2=P(NSD(1)+2,5)**2/SH
+ FLAM2=MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2)
+ WT=1D0+FLAM2*(1D0-CTHE(1)**2)/(8D0*RM1)
+ WTMAX=1D0+FLAM2/(8D0*RM1)
+ ELSEIF(MZPWP.EQ.0) THEN
+C...Angular weight for f + fbar -> Z' -> W+ + W- -> 4 quarks/leptons
+C...(W:s like if intermediate Z).
+ D34=P(IREF(IP,IORD),5)**2
+ D56=P(IREF(IP,3-IORD),5)**2
+ DT=PKK(1,3)+PKK(1,4)+D34
+ DU=PKK(1,5)+PKK(1,6)+D56
+ FGK135=ABS(FGK(1,2,3,4,5,6)-FGK(1,2,5,6,3,4))
+ FGK253=ABS(FGK(2,1,5,6,3,4)-FGK(2,1,3,4,5,6))
+ WT=(COUP(1,3)*FGK135)**2+(COUP(1,4)*FGK253)**2
+ WTMAX=4D0*D34*D56*(COUP(1,3)**2+COUP(1,4)**2)*
+ & (DIGK(DT,DU)+DIGK(DU,DT)-DJGK(DT,DU))
+ ELSEIF(MZPWP.EQ.1) THEN
+C...Angular weight for f + fbar -> Z' -> W+ + W- -> 4 quarks/leptons
+C...(W:s approximately longitudinal, like if intermediate H).
+ WT=16D0*PKK(3,5)*PKK(4,6)
+ WTMAX=SH**2
+ ELSE
+C...Angular weight for f + fbar -> Z' -> H+ + H-, Z0 + h0, h0 + A0,
+C...H0 + A0 -> 4 quarks/leptons, t + tbar -> b + W+ + bbar + W- .
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+ ELSEIF(ISUB.EQ.142) THEN
+ IF(IP.EQ.1.AND.IABS(KFL1(1)).LT.20) THEN
+C...Angular weight for f + fbar' -> W'+/- -> 2 quarks/leptons.
+ KFAI=IABS(MINT(15))
+ KFAIC=1
+ IF(KFAI.GT.10) KFAIC=2
+ VI=PARU(129+2*KFAIC)
+ AI=PARU(130+2*KFAIC)
+ KFAF=IABS(KFL1(1))
+ KFAFC=1
+ IF(KFAF.GT.10) KFAFC=2
+ VF=PARU(129+2*KFAFC)
+ AF=PARU(130+2*KFAFC)
+ ASYM=8D0*VI*AI*VF*AF/((VI**2+AI**2)*(VF**2+AF**2))
+ WT=1D0+ASYM*CTHE(1)*ISIGN(1,MINT(15)*KFL1(1))+CTHE(1)**2
+ WTMAX=2D0+ABS(ASYM)
+ ELSEIF(IP.EQ.1.AND.IABS(KFL2(1)).EQ.23) THEN
+C...Angular weight for f + fbar' -> W'+/- -> W+/- + Z0.
+ RM1=P(NSD(1)+1,5)**2/SH
+ RM2=P(NSD(1)+2,5)**2/SH
+ CCOS2=-(1D0/16D0)*((1D0-RM1-RM2)**2-4D0*RM1*RM2)*
+ & (1D0-2D0*RM1-2D0*RM2+RM1**2+RM2**2+10D0*RM1*RM2)
+ CFLAT=-CCOS2+0.5D0*(RM1+RM2)*(1D0-2D0*RM1-2D0*RM2+
+ & (RM2-RM1)**2)
+ WT=CFLAT+CCOS2*CTHE(1)**2
+ WTMAX=CFLAT+MAX(0D0,CCOS2)
+ ELSEIF(IP.EQ.1.AND.KFL2(1).EQ.25) THEN
+C...Angular weight for f + fbar -> W'+/- -> W+/- + h0.
+ RM1=P(NSD(1)+1,5)**2/SH
+ RM2=P(NSD(1)+2,5)**2/SH
+ FLAM2=MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2)
+ WT=1D0+FLAM2*(1D0-CTHE(1)**2)/(8D0*RM1)
+ WTMAX=1D0+FLAM2/(8D0*RM1)
+ ELSEIF(MZPWP.EQ.0) THEN
+C...Angular weight for f + fbar' -> W' -> W + Z0 -> 4 quarks/leptons
+C...(W/Z like if intermediate W).
+ D34=P(IREF(IP,IORD),5)**2
+ D56=P(IREF(IP,3-IORD),5)**2
+ DT=PKK(1,3)+PKK(1,4)+D34
+ DU=PKK(1,5)+PKK(1,6)+D56
+ FGK135=ABS(FGK(1,2,3,4,5,6)-FGK(1,2,5,6,3,4))
+ FGK136=ABS(FGK(1,2,3,4,6,5)-FGK(1,2,6,5,3,4))
+ WT=(COUP(5,3)*FGK135)**2+(COUP(5,4)*FGK136)**2
+ WTMAX=4D0*D34*D56*(COUP(5,3)**2+COUP(5,4)**2)*
+ & (DIGK(DT,DU)+DIGK(DU,DT)-DJGK(DT,DU))
+ ELSEIF(MZPWP.EQ.1) THEN
+C...Angular weight for f + fbar' -> W' -> W + Z0 -> 4 quarks/leptons
+C...(W/Z approximately longitudinal, like if intermediate H).
+ WT=16D0*PKK(3,5)*PKK(4,6)
+ WTMAX=SH**2
+ ELSE
+C...Angular weight for f + fbar -> W' -> W + h0 -> whatever,
+C...t + bbar -> t + W + bbar.
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+ ELSEIF(ISUB.EQ.145.OR.ISUB.EQ.162.OR.ISUB.EQ.163.OR.ISUB.EQ.164)
+ & THEN
+C...Isotropic decay of leptoquarks (assumed spin 0).
+ WT=1D0
+ WTMAX=1D0
+
+ ELSEIF(ISUB.GE.146.AND.ISUB.LE.148) THEN
+C...Decays of (spin 1/2) q*/e* -> q/e + (g,gamma) or (Z0,W+-).
+ SIDE=1D0
+ IF(MINT(16).EQ.21.OR.MINT(16).EQ.22) SIDE=-1D0
+ IF(IP.EQ.1.AND.(KFL1(1).EQ.21.OR.KFL1(1).EQ.22)) THEN
+ WT=1D0+SIDE*CTHE(1)
+ WTMAX=2D0
+ ELSEIF(IP.EQ.1) THEN
+
+ RM1=P(NSD(1)+1,5)**2/SH
+ WT=1D0+SIDE*CTHE(1)*(1D0-0.5D0*RM1)/(1D0+0.5D0*RM1)
+ WTMAX=1D0+(1D0-0.5D0*RM1)/(1D0+0.5D0*RM1)
+ ELSE
+C...W/Z decay assumed isotropic, since not known.
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+ ELSEIF(ISUB.EQ.149) THEN
+C...Isotropic decay of techni-eta.
+ WT=1D0
+ WTMAX=1D0
+
+ ELSEIF(ISUB.EQ.191) THEN
+ IF(IP.EQ.1.AND.IABS(KFL1(1)).GT.21) THEN
+C...Angular weight for f + fbar -> rho_tc0 -> W+ W-,
+C...W+ pi_tc-, pi_tc+ W- or pi_tc+ pi_tc-.
+ WT=1D0-CTHE(1)**2
+ WTMAX=1D0
+ ELSEIF(IP.EQ.1) THEN
+C...Angular weight for f + fbar -> rho_tc0 -> f fbar.
+ CTHESG=CTHE(1)*ISIGN(1,MINT(15))
+ XWRHT=(1D0-2D0*XW)/(4D0*XW*(1D0-XW))
+ BWZR=XWRHT*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ BWZI=XWRHT*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ KFAI=IABS(MINT(15))
+ EI=KCHG(KFAI,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.5D0*(VI+AI)
+ VARI=0.5D0*(VI-AI)
+ ALEFTI=(EI+VALI*BWZR)**2+(VALI*BWZI)**2
+ ARIGHI=(EI+VARI*BWZR)**2+(VARI*BWZI)**2
+ KFAF=IABS(KFL1(1))
+ EF=KCHG(KFAF,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ VALF=0.5D0*(VF+AF)
+ VARF=0.5D0*(VF-AF)
+ ALEFTF=(EF+VALF*BWZR)**2+(VALF*BWZI)**2
+ ARIGHF=(EF+VARF*BWZR)**2+(VARF*BWZI)**2
+ ASAME=ALEFTI*ALEFTF+ARIGHI*ARIGHF
+ AFLIP=ALEFTI*ARIGHF+ARIGHI*ALEFTF
+ WT=ASAME*(1D0+CTHESG)**2+AFLIP*(1D0-CTHESG)**2
+ WTMAX=4D0*MAX(ASAME,AFLIP)
+ ELSE
+C...Isotropic decay of W/pi_tc produced in rho_tc decay.
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+ ELSEIF(ISUB.EQ.192) THEN
+ IF(IP.EQ.1.AND.IABS(KFL1(1)).GT.21) THEN
+C...Angular weight for f + fbar' -> rho_tc+ -> W+ Z0,
+C...W+ pi_tc0, pi_tc+ Z0 or pi_tc+ pi_tc0.
+ WT=1D0-CTHE(1)**2
+ WTMAX=1D0
+ ELSEIF(IP.EQ.1) THEN
+C...Angular weight for f + fbar' -> rho_tc+ -> f fbar'.
+ CTHESG=CTHE(1)*ISIGN(1,MINT(15))
+ WT=(1D0+CTHESG)**2
+ WTMAX=4D0
+ ELSE
+C...Isotropic decay of W/Z/pi_tc produced in rho_tc+ decay.
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+ ELSEIF(ISUB.EQ.193) THEN
+ IF(IP.EQ.1.AND.IABS(KFL1(1)).GT.21) THEN
+C...Angular weight for f + fbar -> omega_tc0 ->
+C...gamma pi_tc0 or Z0 pi_tc0.
+ WT=1D0+CTHE(1)**2
+ WTMAX=2D0
+ ELSEIF(IP.EQ.1) THEN
+C...Angular weight for f + fbar -> omega_tc0 -> f fbar.
+ CTHESG=CTHE(1)*ISIGN(1,MINT(15))
+ BWZR=(0.5D0/(1D0-XW))*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ BWZI=(0.5D0/(1D0-XW))*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ KFAI=IABS(MINT(15))
+ EI=KCHG(KFAI,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.5D0*(VI+AI)
+ VARI=0.5D0*(VI-AI)
+ BLEFTI=(EI-VALI*BWZR)**2+(VALI*BWZI)**2
+ BRIGHI=(EI-VARI*BWZR)**2+(VARI*BWZI)**2
+ KFAF=IABS(KFL1(1))
+ EF=KCHG(KFAF,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ VALF=0.5D0*(VF+AF)
+ VARF=0.5D0*(VF-AF)
+ BLEFTF=(EF-VALF*BWZR)**2+(VALF*BWZI)**2
+ BRIGHF=(EF-VARF*BWZR)**2+(VARF*BWZI)**2
+ BSAME=BLEFTI*BLEFTF+BRIGHI*BRIGHF
+ BFLIP=BLEFTI*BRIGHF+BRIGHI*BLEFTF
+ WT=BSAME*(1D0+CTHESG)**2+BFLIP*(1D0-CTHESG)**2
+ WTMAX=4D0*MAX(BSAME,BFLIP)
+ ELSE
+C...Isotropic decay of Z/pi_tc produced in omega_tc decay.
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+ ELSEIF(ISUB.EQ.353) THEN
+C...Angular weight for Z_R0 -> 2 quarks/leptons.
+ EI=KCHG(IABS(MINT(15)),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ EF=KCHG(PYCOMP(KFL1(1)),1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ RMF=MIN(1D0,4D0*PMAS(PYCOMP(KFL1(1)),1)**2/SH)
+ WT1=(VI**2+AI**2)*(VF**2+(1D0-RMF)*AF**2)
+ WT2=RMF*(VI**2+AI**2)*VF**2
+ WT3=SQRT(1D0-RMF)*4D0*VI*AI*VF*AF
+ WT=WT1*(1D0+CTHE(1)**2)+WT2*(1D0-CTHE(1)**2)+
+ & 2D0*WT3*CTHE(1)*ISIGN(1,MINT(15)*KFL1(1))
+ WTMAX=2D0*(WT1+ABS(WT3))
+
+ ELSEIF(ISUB.EQ.354) THEN
+C...Angular weight for W_R+/- -> 2 quarks/leptons.
+ RM3=PMAS(PYCOMP(KFL1(1)),1)**2/SH
+ RM4=PMAS(PYCOMP(KFL2(1)),1)**2/SH
+ BE34=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4))
+ WT=(1D0+BE34*CTHE(1)*ISIGN(1,MINT(15)*KFL1(1)))**2-(RM3-RM4)**2
+ WTMAX=4D0
+
+ ELSEIF(ISUB.EQ.391) THEN
+C...Angular weight for f + fbar -> G* -> f + fbar
+ IF(IP.EQ.1.AND.IABS(KFL1(1)).LE.18) THEN
+ WT=1D0-3D0*CTHE(1)**2+4D0*CTHE(1)**4
+ WTMAX=2D0
+C...Angular weight for f + fbar -> G* -> gamma + gamma or g + g
+C...implemented by M.-C. Lemaire
+ ELSEIF(IP.EQ.1.AND.(IABS(KFL1(1)).EQ.21.OR.
+ & IABS(KFL1(1)).EQ.22)) THEN
+ WT=1D0-CTHE(1)**4
+ WTMAX=1D0
+C...Other G* decays not yet implemented angular distributions.
+ ELSE
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+ ELSEIF(ISUB.EQ.392) THEN
+C...Angular weight for g + g -> G* -> f + fbar
+ IF(IP.EQ.1.AND.IABS(KFL1(1)).LE.18) THEN
+ WT=1D0-CTHE(1)**4
+ WTMAX=1D0
+C...Angular weight for g + g -> G* -> gamma +gamma or g + g
+C...implemented by M.-C. Lemaire
+ ELSEIF(IP.EQ.1.AND.(IABS(KFL1(1)).EQ.21.OR.
+ & IABS(KFL1(1)).EQ.22)) THEN
+ WT=1D0+6D0*CTHE(1)**2+CTHE(1)**4
+ WTMAX=8D0
+C...Other G* decays not yet implemented angular distributions.
+ ELSE
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+
+C...Obtain correct angular distribution by rejection techniques.
+ ELSE
+ WT=1D0
+ WTMAX=1D0
+ ENDIF
+ IF(WT.LT.PYR(0)*WTMAX) GOTO 430
+
+C...Construct massive four-vectors using angles chosen.
+ 590 DO 690 JT=1,JTMAX
+ IF(KDCY(JT).EQ.0) GOTO 690
+ ID=IREF(IP,JT)
+ DO 600 J=1,5
+ DPMO(J)=P(ID,J)
+ 600 CONTINUE
+ DPMO(4)=SQRT(DPMO(1)**2+DPMO(2)**2+DPMO(3)**2+DPMO(5)**2)
+CMRENNA++
+ IF(KFL3(JT).EQ.0) THEN
+ CALL PYROBO(NSD(JT)+1,NSD(JT)+2,ACOS(CTHE(JT)),PHI(JT),
+ & DPMO(1)/DPMO(4),DPMO(2)/DPMO(4),DPMO(3)/DPMO(4))
+ N0=NSD(JT)+2
+ ELSE
+ CALL PYROBO(NSD(JT)+1,NSD(JT)+3,ACOS(CTHE(JT)),PHI(JT),
+ & DPMO(1)/DPMO(4),DPMO(2)/DPMO(4),DPMO(3)/DPMO(4))
+ N0=NSD(JT)+3
+ ENDIF
+
+ DO 610 J=1,4
+ VDCY(J)=V(ID,J)+V(ID,5)*P(ID,J)/P(ID,5)
+ 610 CONTINUE
+C...Fill in position of decay vertex.
+ DO 630 I=NSD(JT)+1,N0
+ DO 620 J=1,4
+ V(I,J)=VDCY(J)
+ 620 CONTINUE
+ V(I,5)=0D0
+
+ 630 CONTINUE
+CMRENNA--
+
+C...Mark decayed resonances; trace history.
+ K(ID,1)=K(ID,1)+10
+ KFA=IABS(K(ID,2))
+ KCA=PYCOMP(KFA)
+ IF(KCQM(JT).NE.0) THEN
+C...Do not kill colour flow through coloured resonance!
+ ELSE
+ K(ID,4)=NSD(JT)+1
+ K(ID,5)=NSD(JT)+2
+C...If 3-body or 2-body with junction:
+ IF(KFL3(JT).NE.0.OR.ITJUNC(JT).NE.0) K(ID,5)=NSD(JT)+3
+C...If 3-body with junction:
+ IF(ITJUNC(JT).NE.0.AND.KFL3(JT).NE.0) K(ID,5)=NSD(JT)+4
+ ENDIF
+
+C...Add documentation lines.
+ ISUBRG=MAX(1,MIN(500,MINT(1)))
+ IF(IRES.EQ.0.OR.ISET(ISUBRG).EQ.11) THEN
+ IDOC=MINT(83)+MINT(4)
+CMRENNA+++
+ IHI=NSD(JT)+2
+ IF(KFL3(JT).NE.0) IHI=IHI+1
+ DO 650 I=NSD(JT)+1,IHI
+CMRENNA---
+ I1=MINT(83)+MINT(4)+1
+ K(I,3)=I1
+ IF(MSTP(128).GE.1) K(I,3)=ID
+ IF(MSTP(128).LE.1.AND.MINT(4).LT.MSTP(126)) THEN
+ MINT(4)=MINT(4)+1
+ K(I1,1)=21
+ K(I1,2)=K(I,2)
+ K(I1,3)=IREF(IP,JT+3)
+ DO 640 J=1,5
+ P(I1,J)=P(I,J)
+ 640 CONTINUE
+ ENDIF
+ 650 CONTINUE
+ ELSE
+ K(NSD(JT)+1,3)=ID
+ K(NSD(JT)+2,3)=ID
+C...If 3-body or 2-body with junction:
+ IF(KFL3(JT).NE.0.OR.ITJUNC(JT).GT.0) K(NSD(JT)+3,3)=ID
+C...If 3-body with junction:
+ IF(KFL3(JT).NE.0.AND.ITJUNC(JT).GT.0) K(NSD(JT)+4,3)=ID
+ ENDIF
+
+C...Do showering of two or three objects.
+ NSHBEF=N
+ IF(MSTP(71).GE.1.AND.MINT(35).LE.1) THEN
+ IF(KFL3(JT).EQ.0) THEN
+ if(parj(200).ne.1.) CALL PYSHOW(NSD(JT)+1,NSD(JT)+2,P(ID,5))
+ if(parj(200).eq.1.) CALL PYSHOWQ(NSD(JT)+1,NSD(JT)+2,P(ID,5))
+ ELSE
+ if(parj(200).ne.1.) CALL PYSHOW(NSD(JT)+1,-3,P(ID,5))
+ if(parj(200).eq.1.) CALL PYSHOWQ(NSD(JT)+1,-3,P(ID,5))
+ ENDIF
+
+c...For pT-ordered shower need set up first, especially colour tags.
+C...(Need to set up colour tags even if MSTP(71) = 0)
+ ELSEIF(MINT(35).GE.2) THEN
+ NPART=2
+ IF(KFL3(JT).NE.0) NPART=3
+ IPART(1)=NSD(JT)+1
+ IPART(2)=NSD(JT)+2
+ IPART(3)=NSD(JT)+3
+ PTPART(1)=0.5D0*P(ID,5)
+ PTPART(2)=PTPART(1)
+ PTPART(3)=PTPART(1)
+ IF(KCQ1(JT).EQ.1.OR.KCQ1(JT).EQ.2) THEN
+ MOTHER=K(NSD(JT)+1,4)/MSTU(5)
+ IF(MOTHER.LE.NSD(JT)) THEN
+ MCT(NSD(JT)+1,1)=MCT(MOTHER,1)
+ ELSE
+ NCT=NCT+1
+ MCT(NSD(JT)+1,1)=NCT
+ MCT(MOTHER,2)=NCT
+ ENDIF
+ ENDIF
+ IF(KCQ1(JT).EQ.-1.OR.KCQ1(JT).EQ.2) THEN
+ MOTHER=K(NSD(JT)+1,5)/MSTU(5)
+ IF(MOTHER.LE.NSD(JT)) THEN
+ MCT(NSD(JT)+1,2)=MCT(MOTHER,2)
+ ELSE
+ NCT=NCT+1
+ MCT(NSD(JT)+1,2)=NCT
+ MCT(MOTHER,1)=NCT
+ ENDIF
+ ENDIF
+ IF(MCT(NSD(JT)+2,1).EQ.0.AND.(KCQ2(JT).EQ.1.OR.
+ & KCQ2(JT).EQ.2)) THEN
+ MOTHER=K(NSD(JT)+2,4)/MSTU(5)
+ IF(MOTHER.LE.NSD(JT)) THEN
+ MCT(NSD(JT)+2,1)=MCT(MOTHER,1)
+ ELSE
+ NCT=NCT+1
+ MCT(NSD(JT)+2,1)=NCT
+ MCT(MOTHER,2)=NCT
+ ENDIF
+ ENDIF
+ IF(MCT(NSD(JT)+2,2).EQ.0.AND.(KCQ2(JT).EQ.-1.OR.
+ & KCQ2(JT).EQ.2)) THEN
+ MOTHER=K(NSD(JT)+2,5)/MSTU(5)
+ IF(MOTHER.LE.NSD(JT)) THEN
+ MCT(NSD(JT)+2,2)=MCT(MOTHER,2)
+ ELSE
+ NCT=NCT+1
+ MCT(NSD(JT)+2,2)=NCT
+ MCT(MOTHER,1)=NCT
+ ENDIF
+ ENDIF
+ IF(NPART.EQ.3.AND.MCT(NSD(JT)+3,1).EQ.0.AND.
+ & (KCQ3(JT).EQ.1.OR. KCQ3(JT).EQ.2)) THEN
+ MOTHER=K(NSD(JT)+3,4)/MSTU(5)
+ MCT(NSD(JT)+3,1)=MCT(MOTHER,1)
+ ENDIF
+ IF(NPART.EQ.3.AND.MCT(NSD(JT)+3,2).EQ.0.AND.
+ & (KCQ3(JT).EQ.-1.OR.KCQ3(JT).EQ.2)) THEN
+ MOTHER=K(NSD(JT)+3,5)/MSTU(5)
+ MCT(NSD(JT)+2,2)=MCT(MOTHER,2)
+ ENDIF
+ IF (MSTP(71).GE.1) CALL PYPTFS(2,0.5D0*P(ID,5),0D0,PTGEN)
+ ENDIF
+ NSHAFT=N
+ IF(JT.EQ.1) NAFT1=N
+
+C...Check if decay products moved by shower.
+ NSD1=NSD(JT)+1
+ NSD2=NSD(JT)+2
+ NSD3=NSD(JT)+3
+ IF(NSHAFT.GT.NSHBEF) THEN
+ IF(K(NSD1,1).GT.10) THEN
+ DO 660 I=NSHBEF+1,NSHAFT
+ IF(K(I,1).LT.10.AND.K(I,2).EQ.K(NSD1,2)) NSD1=I
+ 660 CONTINUE
+ ENDIF
+ IF(K(NSD2,1).GT.10) THEN
+ DO 670 I=NSHBEF+1,NSHAFT
+ IF(K(I,1).LT.10.AND.K(I,2).EQ.K(NSD2,2).AND.
+ & I.NE.NSD1) NSD2=I
+ 670 CONTINUE
+ ENDIF
+ IF(KFL3(JT).NE.0.AND.K(NSD3,1).GT.10) THEN
+ DO 680 I=NSHBEF+1,NSHAFT
+ IF(K(I,1).LT.10.AND.K(I,2).EQ.K(NSD3,2).AND.
+ & I.NE.NSD1.AND.I.NE.NSD2) NSD3=I
+ 680 CONTINUE
+ ENDIF
+ ENDIF
+
+C...Store decay products for further treatment.
+ NP=NP+1
+ IREF(NP,1)=NSD1
+ IREF(NP,2)=NSD2
+ IREF(NP,3)=0
+ IF(KFL3(JT).NE.0) IREF(NP,3)=NSD3
+ IREF(NP,4)=IDOC+1
+ IREF(NP,5)=IDOC+2
+ IREF(NP,6)=0
+ IF(KFL3(JT).NE.0) IREF(NP,6)=IDOC+3
+ IREF(NP,7)=K(IREF(IP,JT),2)
+ IREF(NP,8)=IREF(IP,JT)
+ 690 CONTINUE
+
+
+C...Fill information for 2 -> 1 -> 2.
+ 700 IF(JTMAX.EQ.1.AND.KDCY(1).NE.0.AND.ISUB.NE.0) THEN
+ MINT(7)=MINT(83)+6+2*ISET(ISUB)
+ MINT(8)=MINT(83)+7+2*ISET(ISUB)
+ MINT(25)=KFL1(1)
+ MINT(26)=KFL2(1)
+ VINT(23)=CTHE(1)
+ RM3=P(N-1,5)**2/SH
+ RM4=P(N,5)**2/SH
+ BE34=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4))
+ VINT(45)=-0.5D0*SH*(1D0-RM3-RM4-BE34*CTHE(1))
+ VINT(46)=-0.5D0*SH*(1D0-RM3-RM4+BE34*CTHE(1))
+ VINT(48)=0.25D0*SH*BE34**2*MAX(0D0,1D0-CTHE(1)**2)
+ VINT(47)=SQRT(VINT(48))
+ ENDIF
+
+C...Possibility of colour rearrangement in W+W- events.
+ IF((ISUB.EQ.25.OR.ISUB.EQ.22).AND.MSTP(115).GE.1) THEN
+ IAKF1=IABS(KFL1(1))
+ IAKF2=IABS(KFL1(2))
+ IAKF3=IABS(KFL2(1))
+ IAKF4=IABS(KFL2(2))
+ IF(MIN(IAKF1,IAKF2,IAKF3,IAKF4).GE.1.AND.
+ & MAX(IAKF1,IAKF2,IAKF3,IAKF4).LE.5) CALL
+ & PYRECO(IREF(1,1),IREF(1,2),NSD(1),NAFT1)
+ IF(MINT(51).NE.0) RETURN
+ ENDIF
+
+C...Loop back if needed.
+ 710 IF(IP.LT.NP) GOTO 170
+
+C...Boost back to standard frame.
+ 720 IF(IBST.EQ.1) CALL PYROBO(MINT(83)+7,N,THEIN,PHIIN,BEXIN,BEYIN,
+ &BEZIN)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMULT
+C...Initializes treatment of multiple interactions, selects kinematics
+C...of hardest interaction if low-pT physics included in run, and
+C...generates all non-hardest interactions.
+
+ SUBROUTINE PYMULT(MMUL)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT2/,/PYINT3/,/PYINT5/,/PYINT7/
+C...Local arrays and saved variables.
+ DIMENSION NMUL(20),SIGM(20),KSTR(500,2),VINTSV(80)
+ SAVE XT2,XT2FAC,XC2,XTS,IRBIN,RBIN,NMUL,SIGM,P83A,P83B,P83C,
+ &CQ2I,CQ2R,PIK,BDIV,B,PLOWB,PHIGHB,PALLB,S4A,S4B,S4C,POWIP,
+ &RPWIP,B2RPDV,B2RPMX,BAVG,VNT145,VNT146,VNT147
+
+C...Initialization of multiple interaction treatment.
+ IF(MMUL.EQ.1) THEN
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5000) MSTP(82)
+ ISUB=96
+ MINT(1)=96
+ VINT(63)=0D0
+ VINT(64)=0D0
+ VINT(143)=1D0
+ VINT(144)=1D0
+
+C...Loop over phase space points: xT2 choice in 20 bins.
+ 100 SIGSUM=0D0
+ DO 120 IXT2=1,20
+ NMUL(IXT2)=MSTP(83)
+ SIGM(IXT2)=0D0
+ DO 110 ITRY=1,MSTP(83)
+ RSCA=0.05D0*((21-IXT2)-PYR(0))
+ XT2=VINT(149)*(1D0+VINT(149))/(VINT(149)+RSCA)-VINT(149)
+ XT2=MAX(0.01D0*VINT(149),XT2)
+ VINT(25)=XT2
+
+C...Choose tau and y*. Calculate cos(theta-hat).
+ IF(PYR(0).LE.COEF(ISUB,1)) THEN
+ TAUT=(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)**PYR(0)
+ TAU=XT2*(1D0+TAUT)**2/(4D0*TAUT)
+ ELSE
+ TAU=XT2*(1D0+TAN(PYR(0)*ATAN(SQRT(1D0/XT2-1D0)))**2)
+ ENDIF
+ VINT(21)=TAU
+ CALL PYKLIM(2)
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ CALL PYKMAP(2,MYST,PYR(0))
+ VINT(23)=SQRT(MAX(0D0,1D0-XT2/TAU))*(-1)**INT(1.5D0+PYR(0))
+
+C...Calculate differential cross-section.
+ VINT(71)=0.5D0*VINT(1)*SQRT(XT2)
+ CALL PYSIGH(NCHN,SIGS)
+ SIGM(IXT2)=SIGM(IXT2)+SIGS
+ 110 CONTINUE
+ SIGSUM=SIGSUM+SIGM(IXT2)
+ 120 CONTINUE
+ SIGSUM=SIGSUM/(20D0*MSTP(83))
+
+C...Reject result if sigma(parton-parton) is smaller than hadronic one.
+ IF(SIGSUM.LT.1.1D0*SIGT(0,0,5)) THEN
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5100)
+ & PARP(82)*(VINT(1)/PARP(89))**PARP(90),SIGSUM
+ PARP(82)=0.9D0*PARP(82)
+ VINT(149)=4D0*(PARP(82)*(VINT(1)/PARP(89))**PARP(90))**2/
+ & VINT(2)
+ GOTO 100
+ ENDIF
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5200)
+ & PARP(82)*(VINT(1)/PARP(89))**PARP(90), SIGSUM
+
+C...Start iteration to find k factor.
+ YKE=SIGSUM/MAX(1D-10,SIGT(0,0,5))
+ P83A=(1D0-PARP(83))**2
+ P83B=2D0*PARP(83)*(1D0-PARP(83))
+ P83C=PARP(83)**2
+ CQ2I=1D0/PARP(84)**2
+ CQ2R=2D0/(1D0+PARP(84)**2)
+ SO=0.5D0
+ XI=0D0
+ YI=0D0
+ XF=0D0
+ YF=0D0
+ XK=0.5D0
+ IIT=0
+ 130 IF(IIT.EQ.0) THEN
+ XK=2D0*XK
+ ELSEIF(IIT.EQ.1) THEN
+ XK=0.5D0*XK
+ ELSE
+ XK=XI+(YKE-YI)*(XF-XI)/(YF-YI)
+ ENDIF
+
+C...Evaluate overlap integrals. Find where to divide the b range.
+ IF(MSTP(82).EQ.2) THEN
+ SP=0.5D0*PARU(1)*(1D0-EXP(-XK))
+ SOP=SP/PARU(1)
+ ELSE
+ IF(MSTP(82).EQ.3) THEN
+ DELTAB=0.02D0
+ ELSEIF(MSTP(82).EQ.4) THEN
+ DELTAB=MIN(0.01D0,0.05D0*PARP(84))
+ ELSE
+ POWIP=MAX(0.4D0,PARP(83))
+ RPWIP=2D0/POWIP-1D0
+ DELTAB=MAX(0.02D0,0.02D0*(2D0/POWIP)**(1D0/POWIP))
+ SO=0D0
+ ENDIF
+ SP=0D0
+ SOP=0D0
+ BSP=0D0
+ SOHIGH=0D0
+ IBDIV=0
+ B=-0.5D0*DELTAB
+ 140 B=B+DELTAB
+ IF(MSTP(82).EQ.3) THEN
+ OV=EXP(-B**2)/PARU(2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ OV=(P83A*EXP(-MIN(50D0,B**2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B**2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B**2*CQ2I)))/PARU(2)
+ ELSE
+ OV=EXP(-B**POWIP)/PARU(2)
+ SO=SO+PARU(2)*B*DELTAB*OV
+ ENDIF
+ IF(IBDIV.EQ.1) SOHIGH=SOHIGH+PARU(2)*B*DELTAB*OV
+ PACC=1D0-EXP(-MIN(50D0,PARU(1)*XK*OV))
+ SP=SP+PARU(2)*B*DELTAB*PACC
+ SOP=SOP+PARU(2)*B*DELTAB*OV*PACC
+ BSP=BSP+B*PARU(2)*B*DELTAB*PACC
+ IF(IBDIV.EQ.0.AND.PARU(1)*XK*OV.LT.1D0) THEN
+ IBDIV=1
+ BDIV=B+0.5D0*DELTAB
+ ENDIF
+ IF(B.LT.1D0.OR.B*PACC.GT.1D-6) GOTO 140
+ ENDIF
+ YK=PARU(1)*XK*SO/SP
+
+C...Continue iteration until convergence.
+ IF(YK.LT.YKE) THEN
+ XI=XK
+ YI=YK
+ IF(IIT.EQ.1) IIT=2
+ ELSE
+ XF=XK
+ YF=YK
+ IF(IIT.EQ.0) IIT=1
+ ENDIF
+ IF(ABS(YK-YKE).GE.1D-5*YKE) GOTO 130
+
+C...Store some results for subsequent use.
+ BAVG=BSP/SP
+ VINT(145)=SIGSUM
+ VINT(146)=SOP/SO
+ VINT(147)=SOP/SP
+ VNT145=VINT(145)
+ VNT146=VINT(146)
+ VNT147=VINT(147)
+C...PIK = PARU(1)*XK = (VINT(146)/VINT(147))*sigma_jet/sigma_nondiffr.
+ PIK=(VNT146/VNT147)*YKE
+
+C...Find relative weight for low and high impact parameter.
+ PLOWB=PARU(1)*BDIV**2
+ IF(MSTP(82).EQ.3) THEN
+ PHIGHB=PIK*0.5*EXP(-BDIV**2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ S4A=P83A*EXP(-BDIV**2)
+ S4B=P83B*EXP(-BDIV**2*CQ2R)
+ S4C=P83C*EXP(-BDIV**2*CQ2I)
+ PHIGHB=PIK*0.5*(S4A+S4B+S4C)
+ ELSEIF(PARP(83).GE.1.999D0) THEN
+ PHIGHB=PIK*SOHIGH
+ B2RPDV=BDIV**POWIP
+ ELSE
+ PHIGHB=PIK*SOHIGH
+ B2RPDV=BDIV**POWIP
+ B2RPMX=MAX(2D0*RPWIP,B2RPDV)
+ ENDIF
+ PALLB=PLOWB+PHIGHB
+
+C...Initialize iteration in xT2 for hardest interaction.
+ ELSEIF(MMUL.EQ.2) THEN
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ IF(MSTP(82).LE.0) THEN
+ ELSEIF(MSTP(82).EQ.1) THEN
+ XT2=1D0
+ SIGRAT=XSEC(96,1)/MAX(1D-10,VINT(315)*VINT(316)*SIGT(0,0,5))
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGRAT=SIGRAT*
+ & VINT(317)/(VINT(318)*VINT(320))
+ XT2FAC=SIGRAT*VINT(149)/(1D0-VINT(149))
+ ELSEIF(MSTP(82).EQ.2) THEN
+ XT2=1D0
+ XT2FAC=VNT146*XSEC(96,1)/MAX(1D-10,SIGT(0,0,5))*
+ & VINT(149)*(1D0+VINT(149))
+ ELSE
+ XC2=4D0*CKIN(3)**2/VINT(2)
+ IF(CKIN(3).LE.CKIN(5).OR.MINT(82).GE.2) XC2=0D0
+ ENDIF
+
+C...Select impact parameter for hardest interaction.
+ IF(MSTP(82).LE.2) RETURN
+ 142 IF(PYR(0)*PALLB.LT.PLOWB) THEN
+C...Treatment in low b region.
+ MINT(39)=1
+ B=BDIV*SQRT(PYR(0))
+ IF(MSTP(82).EQ.3) THEN
+ OV=EXP(-B**2)/PARU(2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ OV=(P83A*EXP(-MIN(50D0,B**2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B**2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B**2*CQ2I)))/PARU(2)
+ ELSE
+ OV=EXP(-B**POWIP)/PARU(2)
+ ENDIF
+ VINT(148)=OV/VNT147
+ PACC=1D0-EXP(-MIN(50D0,PIK*OV))
+ XT2=1D0
+ XT2FAC=VNT146*VINT(148)*XSEC(96,1)/MAX(1D-10,SIGT(0,0,5))*
+ & VINT(149)*(1D0+VINT(149))
+ ELSE
+C...Treatment in high b region.
+ MINT(39)=2
+ IF(MSTP(82).EQ.3) THEN
+ B=SQRT(BDIV**2-LOG(PYR(0)))
+ OV=EXP(-B**2)/PARU(2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ S4RNDM=PYR(0)*(S4A+S4B+S4C)
+ IF(S4RNDM.LT.S4A) THEN
+ B=SQRT(BDIV**2-LOG(PYR(0)))
+ ELSEIF(S4RNDM.LT.S4A+S4B) THEN
+ B=SQRT(BDIV**2-LOG(PYR(0))/CQ2R)
+ ELSE
+ B=SQRT(BDIV**2-LOG(PYR(0))/CQ2I)
+ ENDIF
+ OV=(P83A*EXP(-MIN(50D0,B**2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B**2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B**2*CQ2I)))/PARU(2)
+ ELSEIF(PARP(83).GE.1.999D0) THEN
+ 144 B2RPW=B2RPDV-LOG(PYR(0))
+ ACCIP=(B2RPW/B2RPDV)**RPWIP
+ IF(ACCIP.LT.PYR(0)) GOTO 144
+ OV=EXP(-B2RPW)/PARU(2)
+ B=B2RPW**(1D0/POWIP)
+ ELSE
+ 146 B2RPW=B2RPDV-2D0*LOG(PYR(0))
+ ACCIP=(B2RPW/B2RPMX)**RPWIP*EXP(-0.5D0*(B2RPW-B2RPMX))
+ IF(ACCIP.LT.PYR(0)) GOTO 146
+ OV=EXP(-B2RPW)/PARU(2)
+ B=B2RPW**(1D0/POWIP)
+ ENDIF
+ VINT(148)=OV/VNT147
+ PACC=(1D0-EXP(-MIN(50D0,PIK*OV)))/(PIK*OV)
+ ENDIF
+ IF(PACC.LT.PYR(0)) GOTO 142
+ VINT(139)=B/BAVG
+
+ ELSEIF(MMUL.EQ.3) THEN
+C...Low-pT or multiple interactions (first semihard interaction):
+C...choose xT2 according to dpT2/pT2**2*exp(-(sigma above pT2)/norm)
+C...or (MSTP(82)>=2) dpT2/(pT2+pT0**2)**2*exp(-....).
+ ISUB=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ IF(MSTP(82).LE.0) THEN
+ XT2=0D0
+ ELSEIF(MSTP(82).EQ.1) THEN
+ XT2=XT2FAC*XT2/(XT2FAC-XT2*LOG(PYR(0)))
+C...Use with "Sudakov" for low b values when impact parameter dependence.
+ ELSEIF(MSTP(82).EQ.2.OR.MINT(39).EQ.1) THEN
+ IF(XT2.LT.1D0.AND.EXP(-XT2FAC*XT2/(VINT(149)*(XT2+
+ & VINT(149)))).GT.PYR(0)) XT2=1D0
+ IF(XT2.GE.1D0) THEN
+ XT2=(1D0+VINT(149))*XT2FAC/(XT2FAC-(1D0+VINT(149))*LOG(1D0-
+ & PYR(0)*(1D0-EXP(-XT2FAC/(VINT(149)*(1D0+VINT(149)))))))-
+ & VINT(149)
+ ELSE
+ XT2=-XT2FAC/LOG(EXP(-XT2FAC/(XT2+VINT(149)))+PYR(0)*
+ & (EXP(-XT2FAC/VINT(149))-EXP(-XT2FAC/(XT2+VINT(149)))))-
+ & VINT(149)
+ ENDIF
+ XT2=MAX(0.01D0*VINT(149),XT2)
+C...Use without "Sudakov" for high b values when impact parameter dep.
+ ELSE
+ XT2=(XC2+VINT(149))*(1D0+VINT(149))/(1D0+VINT(149)-
+ & PYR(0)*(1D0-XC2))-VINT(149)
+ XT2=MAX(0.01D0*VINT(149),XT2)
+ ENDIF
+ VINT(25)=XT2
+
+C...Low-pT: choose xT2, tau, y* and cos(theta-hat) fixed.
+ IF(MSTP(82).LE.1.AND.XT2.LT.VINT(149)) THEN
+ IF(MINT(82).EQ.1) NGEN(0,1)=NGEN(0,1)-MINT(143)
+ IF(MINT(82).EQ.1) NGEN(ISUB,1)=NGEN(ISUB,1)-MINT(143)
+ ISUB=95
+ MINT(1)=ISUB
+ VINT(21)=0.01D0*VINT(149)
+ VINT(22)=0D0
+ VINT(23)=0D0
+ VINT(25)=0.01D0*VINT(149)
+
+ ELSE
+C...Multiple interactions (first semihard interaction).
+C...Choose tau and y*. Calculate cos(theta-hat).
+ IF(PYR(0).LE.COEF(ISUB,1)) THEN
+ TAUT=(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)**PYR(0)
+ TAU=XT2*(1D0+TAUT)**2/(4D0*TAUT)
+ ELSE
+ TAU=XT2*(1D0+TAN(PYR(0)*ATAN(SQRT(1D0/XT2-1D0)))**2)
+ ENDIF
+ VINT(21)=TAU
+ CALL PYKLIM(2)
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ CALL PYKMAP(2,MYST,PYR(0))
+ VINT(23)=SQRT(MAX(0D0,1D0-XT2/TAU))*(-1)**INT(1.5D0+PYR(0))
+ ENDIF
+ VINT(71)=0.5D0*VINT(1)*SQRT(VINT(25))
+
+C...Store results of cross-section calculation.
+ ELSEIF(MMUL.EQ.4) THEN
+ ISUB=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ XTS=VINT(25)
+ IF(ISET(ISUB).EQ.1) XTS=VINT(21)
+ IF(ISET(ISUB).EQ.2)
+ & XTS=(4D0*VINT(48)+2D0*VINT(63)+2D0*VINT(64))/VINT(2)
+ IF(ISET(ISUB).GE.3.AND.ISET(ISUB).LE.5) XTS=VINT(26)
+ RBIN=MAX(0.000001D0,MIN(0.999999D0,XTS*(1D0+VINT(149))/
+ & (XTS+VINT(149))))
+ IRBIN=INT(1D0+20D0*RBIN)
+ IF(ISUB.EQ.96.AND.MSTP(171).EQ.0) THEN
+ NMUL(IRBIN)=NMUL(IRBIN)+1
+ SIGM(IRBIN)=SIGM(IRBIN)+VINT(153)
+ ENDIF
+
+C...Choose impact parameter if not already done.
+ ELSEIF(MMUL.EQ.5) THEN
+ ISUB=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ 150 IF(MINT(39).GT.0) THEN
+ ELSEIF(MSTP(82).EQ.3) THEN
+ EXPB2=PYR(0)
+ B2=-LOG(PYR(0))
+ VINT(148)=EXPB2/(PARU(2)*VNT147)
+ VINT(139)=SQRT(B2)/BAVG
+ ELSEIF(MSTP(82).EQ.4) THEN
+ RTYPE=PYR(0)
+ IF(RTYPE.LT.P83A) THEN
+ B2=-LOG(PYR(0))
+ ELSEIF(RTYPE.LT.P83A+P83B) THEN
+ B2=-LOG(PYR(0))/CQ2R
+ ELSE
+ B2=-LOG(PYR(0))/CQ2I
+ ENDIF
+ VINT(148)=(P83A*EXP(-MIN(50D0,B2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B2*CQ2I)))/(PARU(2)*VNT147)
+ VINT(139)=SQRT(B2)/BAVG
+ ELSEIF(PARP(83).GE.1.999D0) THEN
+ POWIP=MAX(2D0,PARP(83))
+ RPWIP=2D0/POWIP-1D0
+ PROB1=POWIP/(2D0*EXP(-1D0)+POWIP)
+ 160 IF(PYR(0).LT.PROB1) THEN
+ B2RPW=PYR(0)**(0.5D0*POWIP)
+ ACCIP=EXP(-B2RPW)
+ ELSE
+ B2RPW=1D0-LOG(PYR(0))
+ ACCIP=B2RPW**RPWIP
+ ENDIF
+ IF(ACCIP.LT.PYR(0)) GOTO 160
+ VINT(148)=EXP(-B2RPW)/(PARU(2)*VNT147)
+ VINT(139)=B2RPW**(1D0/POWIP)/BAVG
+ ELSE
+ POWIP=MAX(0.4D0,PARP(83))
+ RPWIP=2D0/POWIP-1D0
+ PROB1=RPWIP/(RPWIP+2D0**RPWIP*EXP(-RPWIP))
+ 170 IF(PYR(0).LT.PROB1) THEN
+ B2RPW=2D0*RPWIP*PYR(0)
+ ACCIP=(B2RPW/RPWIP)**RPWIP*EXP(RPWIP-B2RPW)
+ ELSE
+ B2RPW=2D0*(RPWIP-LOG(PYR(0)))
+ ACCIP=(0.5D0*B2RPW/RPWIP)**RPWIP*EXP(RPWIP-0.5D0*B2RPW)
+ ENDIF
+ IF(ACCIP.LT .PYR(0)) GOTO 170
+ VINT(148)=EXP(-B2RPW)/(PARU(2)*VNT147)
+ VINT(139)=B2RPW**(1D0/POWIP)/BAVG
+ ENDIF
+
+C...Multiple interactions (variable impact parameter) : reject with
+C...probability exp(-overlap*cross-section above pT/normalization).
+C...Does not apply to low-b region, where "Sudakov" already included.
+ VINT(150)=1D0
+ IF(MINT(39).NE.1) THEN
+ RNCOR=(IRBIN-20D0*RBIN)*NMUL(IRBIN)
+ SIGCOR=(IRBIN-20D0*RBIN)*SIGM(IRBIN)
+ DO 180 IBIN=IRBIN+1,20
+ RNCOR=RNCOR+NMUL(IBIN)
+ SIGCOR=SIGCOR+SIGM(IBIN)
+ 180 CONTINUE
+ SIGABV=(SIGCOR/RNCOR)*VINT(149)*(1D0-XTS)/(XTS+VINT(149))
+ IF(MSTP(171).EQ.1) SIGABV=SIGABV*VINT(2)/VINT(289)
+ VINT(150)=EXP(-MIN(50D0,VNT146*VINT(148)*
+ & SIGABV/MAX(1D-10,SIGT(0,0,5))))
+ ENDIF
+ IF(MSTP(86).EQ.3.OR.(MSTP(86).EQ.2.AND.ISUB.NE.11.AND.
+ & ISUB.NE.12.AND.ISUB.NE.13.AND.ISUB.NE.28.AND.ISUB.NE.53
+ & .AND.ISUB.NE.68.AND.ISUB.NE.95.AND.ISUB.NE.96)) THEN
+ IF(VINT(150).LT.PYR(0)) GOTO 150
+ VINT(150)=1D0
+ ENDIF
+
+C...Generate additional multiple semihard interactions.
+ ELSEIF(MMUL.EQ.6) THEN
+ ISUBSV=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ DO 190 J=11,80
+ VINTSV(J)=VINT(J)
+ 190 CONTINUE
+ ISUB=96
+ MINT(1)=96
+ VINT(151)=0D0
+ VINT(152)=0D0
+
+C...Reconstruct strings in hard scattering.
+ NMAX=MINT(84)+4
+ IF(ISET(ISUBSV).EQ.1) NMAX=MINT(84)+2
+ IF(ISET(ISUBSV).EQ.11) NMAX=MINT(84)+2+MINT(3)
+ NSTR=0
+ DO 210 I=MINT(84)+1,NMAX
+ KCS=KCHG(PYCOMP(K(I,2)),2)*ISIGN(1,K(I,2))
+ IF(KCS.EQ.0) GOTO 210
+ DO 200 J=1,4
+ IF(KCS.EQ.1.AND.(J.EQ.2.OR.J.EQ.4)) GOTO 200
+ IF(KCS.EQ.-1.AND.(J.EQ.1.OR.J.EQ.3)) GOTO 200
+ IF(J.LE.2) THEN
+ IST=MOD(K(I,J+3)/MSTU(5),MSTU(5))
+ ELSE
+ IST=MOD(K(I,J+1),MSTU(5))
+ ENDIF
+ IF(IST.LT.MINT(84).OR.IST.GT.I) GOTO 200
+ IF(KCHG(PYCOMP(K(IST,2)),2).EQ.0) GOTO 200
+ NSTR=NSTR+1
+ IF(J.EQ.1.OR.J.EQ.4) THEN
+ KSTR(NSTR,1)=I
+ KSTR(NSTR,2)=IST
+ ELSE
+ KSTR(NSTR,1)=IST
+ KSTR(NSTR,2)=I
+ ENDIF
+ 200 CONTINUE
+ 210 CONTINUE
+
+C...Set up starting values for iteration in xT2.
+ XT2=4D0*VINT(62)/VINT(2)
+ IF(MSTP(82).LE.1) THEN
+ SIGRAT=XSEC(ISUB,1)/MAX(1D-10,VINT(315)*VINT(316)*SIGT(0,0,5))
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGRAT=SIGRAT*
+ & VINT(317)/(VINT(318)*VINT(320))
+ XT2FAC=SIGRAT*VINT(149)/(1D0-VINT(149))
+ ELSE
+ XT2FAC=VNT146*VINT(148)*XSEC(ISUB,1)/
+ & MAX(1D-10,SIGT(0,0,5))*VINT(149)*(1D0+VINT(149))
+ ENDIF
+ VINT(63)=0D0
+ VINT(64)=0D0
+ VINT(143)=1D0-VINT(141)
+ VINT(144)=1D0-VINT(142)
+
+C...Iterate downwards in xT2.
+ 220 IF(MSTP(82).LE.1) THEN
+ XT2=XT2FAC*XT2/(XT2FAC-XT2*LOG(PYR(0)))
+ IF(XT2.LT.VINT(149)) GOTO 270
+ ELSE
+ IF(XT2.LE.0.01001D0*VINT(149)) GOTO 270
+ XT2=XT2FAC*(XT2+VINT(149))/(XT2FAC-(XT2+VINT(149))*
+ & LOG(PYR(0)))-VINT(149)
+ IF(XT2.LE.0D0) GOTO 270
+ XT2=MAX(0.01D0*VINT(149),XT2)
+ ENDIF
+ VINT(25)=XT2
+
+C...Choose tau and y*. Calculate cos(theta-hat).
+ IF(PYR(0).LE.COEF(ISUB,1)) THEN
+ TAUT=(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)**PYR(0)
+ TAU=XT2*(1D0+TAUT)**2/(4D0*TAUT)
+ ELSE
+ TAU=XT2*(1D0+TAN(PYR(0)*ATAN(SQRT(1D0/XT2-1D0)))**2)
+ ENDIF
+ VINT(21)=TAU
+ CALL PYKLIM(2)
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ CALL PYKMAP(2,MYST,PYR(0))
+ VINT(23)=SQRT(MAX(0D0,1D0-XT2/TAU))*(-1)**INT(1.5D0+PYR(0))
+
+C...Check that x not used up. Accept or reject kinematical variables.
+ X1M=SQRT(TAU)*EXP(VINT(22))
+ X2M=SQRT(TAU)*EXP(-VINT(22))
+ IF(VINT(143)-X1M.LT.0.01D0.OR.VINT(144)-X2M.LT.0.01D0) GOTO 220
+ VINT(71)=0.5D0*VINT(1)*SQRT(XT2)
+ CALL PYSIGH(NCHN,SIGS)
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGS=SIGS*VINT(320)
+ IF(SIGS.LT.XSEC(ISUB,1)*PYR(0)) GOTO 220
+
+C...Reset K, P and V vectors. Select some variables.
+ DO 240 I=N+1,N+2
+ DO 230 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 230 CONTINUE
+ 240 CONTINUE
+ RFLAV=PYR(0)
+ PT=0.5D0*VINT(1)*SQRT(XT2)
+ PHI=PARU(2)*PYR(0)
+ CTH=VINT(23)
+
+C...Add first parton to event record.
+ K(N+1,1)=3
+ K(N+1,2)=21
+ IF(RFLAV.GE.MAX(PARP(85),PARP(86))) K(N+1,2)=
+ & 1+INT((2D0+PARJ(2))*PYR(0))
+ P(N+1,1)=PT*COS(PHI)
+ P(N+1,2)=PT*SIN(PHI)
+ P(N+1,3)=0.25D0*VINT(1)*(VINT(41)*(1D0+CTH)-VINT(42)*(1D0-CTH))
+ P(N+1,4)=0.25D0*VINT(1)*(VINT(41)*(1D0+CTH)+VINT(42)*(1D0-CTH))
+ P(N+1,5)=0D0
+
+C...Add second parton to event record.
+ K(N+2,1)=3
+ K(N+2,2)=21
+ IF(K(N+1,2).NE.21) K(N+2,2)=-K(N+1,2)
+ P(N+2,1)=-P(N+1,1)
+ P(N+2,2)=-P(N+1,2)
+ P(N+2,3)=0.25D0*VINT(1)*(VINT(41)*(1D0-CTH)-VINT(42)*(1D0+CTH))
+ P(N+2,4)=0.25D0*VINT(1)*(VINT(41)*(1D0-CTH)+VINT(42)*(1D0+CTH))
+ P(N+2,5)=0D0
+
+ IF(RFLAV.LT.PARP(85).AND.NSTR.GE.1) THEN
+C....Choose relevant string pieces to place gluons on.
+ DO 260 I=N+1,N+2
+ DMIN=1D8
+ DO 250 ISTR=1,NSTR
+ I1=KSTR(ISTR,1)
+ I2=KSTR(ISTR,2)
+ DIST=(P(I,4)*P(I1,4)-P(I,1)*P(I1,1)-P(I,2)*P(I1,2)-
+ & P(I,3)*P(I1,3))*(P(I,4)*P(I2,4)-P(I,1)*P(I2,1)-
+ & P(I,2)*P(I2,2)-P(I,3)*P(I2,3))/MAX(1D0,P(I1,4)*P(I2,4)-
+ & P(I1,1)*P(I2,1)-P(I1,2)*P(I2,2)-P(I1,3)*P(I2,3))
+ IF(ISTR.EQ.1.OR.DIST.LT.DMIN) THEN
+ DMIN=DIST
+ IST1=I1
+ IST2=I2
+ ISTM=ISTR
+ ENDIF
+ 250 CONTINUE
+
+C....Colour flow adjustments, new string pieces.
+ IF(K(IST1,4)/MSTU(5).EQ.IST2) K(IST1,4)=MSTU(5)*I+
+ & MOD(K(IST1,4),MSTU(5))
+ IF(MOD(K(IST1,5),MSTU(5)).EQ.IST2) K(IST1,5)=
+ & MSTU(5)*(K(IST1,5)/MSTU(5))+I
+ K(I,5)=MSTU(5)*IST1
+ K(I,4)=MSTU(5)*IST2
+ IF(K(IST2,5)/MSTU(5).EQ.IST1) K(IST2,5)=MSTU(5)*I+
+ & MOD(K(IST2,5),MSTU(5))
+ IF(MOD(K(IST2,4),MSTU(5)).EQ.IST1) K(IST2,4)=
+ & MSTU(5)*(K(IST2,4)/MSTU(5))+I
+ KSTR(ISTM,2)=I
+ KSTR(NSTR+1,1)=I
+ KSTR(NSTR+1,2)=IST2
+ NSTR=NSTR+1
+ 260 CONTINUE
+
+C...String drawing and colour flow for gluon loop.
+ ELSEIF(K(N+1,2).EQ.21) THEN
+ K(N+1,4)=MSTU(5)*(N+2)
+ K(N+1,5)=MSTU(5)*(N+2)
+ K(N+2,4)=MSTU(5)*(N+1)
+ K(N+2,5)=MSTU(5)*(N+1)
+ KSTR(NSTR+1,1)=N+1
+ KSTR(NSTR+1,2)=N+2
+ KSTR(NSTR+2,1)=N+2
+ KSTR(NSTR+2,2)=N+1
+ NSTR=NSTR+2
+
+C...String drawing and colour flow for qqbar pair.
+ ELSE
+ K(N+1,4)=MSTU(5)*(N+2)
+ K(N+2,5)=MSTU(5)*(N+1)
+ KSTR(NSTR+1,1)=N+1
+ KSTR(NSTR+1,2)=N+2
+ NSTR=NSTR+1
+ ENDIF
+
+C...Global statistics.
+ MINT(351)=MINT(351)+1
+ VINT(351)=VINT(351)+PT
+ IF (MINT(351).EQ.1) VINT(356)=PT
+
+C...Update remaining energy; iterate.
+ N=N+2
+ IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYMULT:) no more memory left in PYJETS')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ MINT(31)=MINT(31)+1
+ VINT(151)=VINT(151)+VINT(41)
+ VINT(152)=VINT(152)+VINT(42)
+ VINT(143)=VINT(143)-VINT(41)
+ VINT(144)=VINT(144)-VINT(42)
+C...Allow FSR for UE
+ IF(MSTP(152).EQ.1) then
+ if(parj(200).ne.1.) CALL PYSHOW(N-1,N,SQRT(PARP(71))*PT)
+ if(parj(200).eq.1.) CALL PYSHOWQ(N-1,N,SQRT(PARP(71))*PT)
+ endif
+ IF(MINT(31).LT.240) GOTO 220
+ 270 CONTINUE
+ MINT(1)=ISUBSV
+ DO 280 J=11,80
+ VINT(J)=VINTSV(J)
+ 280 CONTINUE
+ ENDIF
+
+C...Format statements for printout.
+ 5000 FORMAT(/1X,'****** PYMULT: initialization of multiple inter',
+ &'actions for MSTP(82) =',I2,' ******')
+ 5100 FORMAT(8X,'pT0 =',F5.2,' GeV gives sigma(parton-parton) =',1P,
+ &D9.2,' mb: rejected')
+ 5200 FORMAT(8X,'pT0 =',F5.2,' GeV gives sigma(parton-parton) =',1P,
+ &D9.2,' mb: accepted')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYREMN
+C...Adds on target remnants (one or two from each side) and
+C...includes primordial kT for hadron beams.
+
+ SUBROUTINE PYREMN(IPU1,IPU2)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION KFLCH(2),KFLSP(2),CHI(2),PMS(0:6),IS(2),ISN(2),ROBO(5),
+ &PSYS(0:2,5),PMIN(0:2),QOLD(4),QNEW(4),DBE(3),PSUM(4)
+
+C...Find event type and remaining energy.
+ ISUB=MINT(1)
+ NS=N
+ IF(MINT(50).EQ.0.OR.MOD(MSTP(81),10).LE.0) THEN
+ VINT(143)=1D0-VINT(141)
+ VINT(144)=1D0-VINT(142)
+ ENDIF
+
+C...Define initial partons.
+ NTRY=0
+ 100 NTRY=NTRY+1
+ DO 130 JT=1,2
+ I=MINT(83)+JT+2
+ IF(JT.EQ.1) IPU=IPU1
+ IF(JT.EQ.2) IPU=IPU2
+ K(I,1)=21
+ K(I,2)=K(IPU,2)
+ K(I,3)=I-2
+ PMS(JT)=0D0
+ VINT(156+JT)=0D0
+ VINT(158+JT)=0D0
+ IF(MINT(47).EQ.1) THEN
+ DO 110 J=1,5
+ P(I,J)=P(I-2,J)
+ 110 CONTINUE
+ ELSEIF(ISUB.EQ.95) THEN
+ K(I,2)=21
+ ELSE
+ P(I,5)=P(IPU,5)
+
+C...No primordial kT, or chosen according to truncated Gaussian or
+C...exponential, or (for photon) predetermined or power law.
+ 120 IF(MINT(40+JT).EQ.2.AND.MINT(10+JT).NE.22) THEN
+ IF(MSTP(91).LE.0) THEN
+ PT=0D0
+ ELSEIF(MSTP(91).EQ.1) THEN
+ PT=PARP(91)*SQRT(-LOG(PYR(0)))
+ ELSE
+ RPT1=PYR(0)
+ RPT2=PYR(0)
+ PT=-PARP(92)*LOG(RPT1*RPT2)
+ ENDIF
+ IF(PT.GT.PARP(93)) GOTO 120
+ ELSEIF(MINT(106+JT).EQ.3) THEN
+ PTA=SQRT(VINT(282+JT))
+ PTB=0D0
+ IF(MSTP(66).EQ.5.AND.MSTP(93).EQ.1) THEN
+ PTB=PARP(99)*SQRT(-LOG(PYR(0)))
+ ELSEIF(MSTP(66).EQ.5.AND.MSTP(93).EQ.2) THEN
+ RPT1=PYR(0)
+ RPT2=PYR(0)
+ PTB=-PARP(99)*LOG(RPT1*RPT2)
+ ENDIF
+ IF(PTB.GT.PARP(100)) GOTO 120
+ PT=SQRT(PTA**2+PTB**2+2D0*PTA*PTB*COS(PARU(2)*PYR(0)))
+ PT=PT*0.8D0**MINT(57)
+ IF(NTRY.GT.10) PT=PT*0.8D0**(NTRY-10)
+ ELSEIF(IABS(MINT(14+JT)).LE.8.OR.MINT(14+JT).EQ.21) THEN
+ IF(MSTP(93).LE.0) THEN
+ PT=0D0
+ ELSEIF(MSTP(93).EQ.1) THEN
+ PT=PARP(99)*SQRT(-LOG(PYR(0)))
+ ELSEIF(MSTP(93).EQ.2) THEN
+ RPT1=PYR(0)
+ RPT2=PYR(0)
+ PT=-PARP(99)*LOG(RPT1*RPT2)
+ ELSEIF(MSTP(93).EQ.3) THEN
+ HA=PARP(99)**2
+ HB=PARP(100)**2
+ PT=SQRT(MAX(0D0,HA*(HA+HB)/(HA+HB-PYR(0)*HB)-HA))
+ ELSE
+ HA=PARP(99)**2
+ HB=PARP(100)**2
+ IF(MSTP(93).EQ.5) HB=MIN(VINT(48),PARP(100)**2)
+ PT=SQRT(MAX(0D0,HA*((HA+HB)/HA)**PYR(0)-HA))
+ ENDIF
+ IF(PT.GT.PARP(100)) GOTO 120
+ ELSE
+ PT=0D0
+ ENDIF
+ VINT(156+JT)=PT
+ PHI=PARU(2)*PYR(0)
+ P(I,1)=PT*COS(PHI)
+ P(I,2)=PT*SIN(PHI)
+ PMS(JT)=P(I,5)**2+P(I,1)**2+P(I,2)**2
+ ENDIF
+ 130 CONTINUE
+ IF(MINT(47).EQ.1) RETURN
+
+C...Kinematics construction for initial partons.
+ I1=MINT(83)+3
+ I2=MINT(83)+4
+ IF(ISUB.EQ.95) THEN
+ SHS=0D0
+ SHR=0D0
+ ELSE
+ SHS=VINT(141)*VINT(142)*VINT(2)+(P(I1,1)+P(I2,1))**2+
+ & (P(I1,2)+P(I2,2))**2
+ SHR=SQRT(MAX(0D0,SHS))
+ IF((SHS-PMS(1)-PMS(2))**2-4D0*PMS(1)*PMS(2).LE.0D0) GOTO 100
+ P(I1,4)=0.5D0*(SHR+(PMS(1)-PMS(2))/SHR)
+ P(I1,3)=SQRT(MAX(0D0,P(I1,4)**2-PMS(1)))
+ P(I2,4)=SHR-P(I1,4)
+ P(I2,3)=-P(I1,3)
+
+C...Transform partons to overall CM-frame.
+ ROBO(3)=(P(I1,1)+P(I2,1))/SHR
+ ROBO(4)=(P(I1,2)+P(I2,2))/SHR
+ CALL PYROBO(I1,I2,0D0,0D0,-ROBO(3),-ROBO(4),0D0)
+ ROBO(2)=PYANGL(P(I1,1),P(I1,2))
+ CALL PYROBO(I1,I2,0D0,-ROBO(2),0D0,0D0,0D0)
+ ROBO(1)=PYANGL(P(I1,3),P(I1,1))
+ CALL PYROBO(I1,I2,-ROBO(1),0D0,0D0,0D0,0D0)
+ CALL PYROBO(I2+1,MINT(52),0D0,-ROBO(2),0D0,0D0,0D0)
+ CALL PYROBO(I1,MINT(52),ROBO(1),ROBO(2),ROBO(3),ROBO(4),0D0)
+ ROBO(5)=(VINT(141)-VINT(142))/(VINT(141)+VINT(142))
+ CALL PYROBO(I1,MINT(52),0D0,0D0,0D0,0D0,ROBO(5))
+ ENDIF
+
+C...Optionally fix up x and Q2 definitions for leptoproduction.
+ IDISXQ=0
+ IF((MINT(43).EQ.2.OR.MINT(43).EQ.3).AND.((ISUB.EQ.10.AND.
+ &MSTP(23).GE.1).OR.(ISUB.EQ.83.AND.MSTP(23).GE.2))) IDISXQ=1
+ IF(IDISXQ.EQ.1) THEN
+
+C...Find where incoming and outgoing leptons/partons are sitting.
+ LESD=1
+ IF(MINT(42).EQ.1) LESD=2
+ LPIN=MINT(83)+3-LESD
+ LEIN=MINT(84)+LESD
+ LQIN=MINT(84)+3-LESD
+ LEOUT=MINT(84)+2+LESD
+ LQOUT=MINT(84)+5-LESD
+ IF(K(LEIN,3).GT.LEIN) LEIN=K(LEIN,3)
+ IF(K(LQIN,3).GT.LQIN) LQIN=K(LQIN,3)
+ LSCMS=0
+ DO 140 I=MINT(84)+5,N
+ IF(K(I,2).EQ.94) THEN
+ LSCMS=I
+ LEOUT=I+LESD
+ LQOUT=I+3-LESD
+ ENDIF
+ 140 CONTINUE
+ LQBG=IPU1
+ IF(LESD.EQ.1) LQBG=IPU2
+
+C...Calculate actual and wanted momentum transfer.
+ XNOM=VINT(43-LESD)
+ Q2NOM=-VINT(45)
+ HPK=2D0*(P(LPIN,4)*P(LEIN,4)-P(LPIN,1)*P(LEIN,1)-
+ & P(LPIN,2)*P(LEIN,2)-P(LPIN,3)*P(LEIN,3))*
+ & (P(MINT(83)+LESD,4)*VINT(40+LESD)/P(LEIN,4))
+ HPT2=MAX(0D0,Q2NOM*(1D0-Q2NOM/(XNOM*HPK)))
+ FAC=SQRT(HPT2/(P(LEOUT,1)**2+P(LEOUT,2)**2))
+ P(N+1,1)=FAC*P(LEOUT,1)
+ P(N+1,2)=FAC*P(LEOUT,2)
+ P(N+1,3)=0.25D0*((HPK-Q2NOM/XNOM)/P(LPIN,4)-
+ & Q2NOM/(P(MINT(83)+LESD,4)*VINT(40+LESD)))*(-1)**(LESD+1)
+ P(N+1,4)=SQRT(P(LEOUT,5)**2+P(N+1,1)**2+P(N+1,2)**2+
+ & P(N+1,3)**2)
+ DO 150 J=1,4
+ QOLD(J)=P(LEIN,J)-P(LEOUT,J)
+ QNEW(J)=P(LEIN,J)-P(N+1,J)
+ 150 CONTINUE
+
+C...Boost outgoing electron and daughters.
+ IF(LSCMS.EQ.0) THEN
+ DO 160 J=1,4
+ P(LEOUT,J)=P(N+1,J)
+ 160 CONTINUE
+ ELSE
+ DO 170 J=1,3
+ P(N+2,J)=(P(N+1,J)-P(LEOUT,J))/(P(N+1,4)+P(LEOUT,4))
+ 170 CONTINUE
+ PINV=2D0/(1D0+P(N+2,1)**2+P(N+2,2)**2+P(N+2,3)**2)
+ DO 180 J=1,3
+ DBE(J)=PINV*P(N+2,J)
+ 180 CONTINUE
+ DO 200 I=LSCMS+1,N
+ IORIG=I
+ 190 IORIG=K(IORIG,3)
+ IF(IORIG.GT.LEOUT) GOTO 190
+ IF(I.EQ.LEOUT.OR.IORIG.EQ.LEOUT)
+ & CALL PYROBO(I,I,0D0,0D0,DBE(1),DBE(2),DBE(3))
+ 200 CONTINUE
+ ENDIF
+
+C...Copy shower initiator and all outgoing partons.
+ NCOP=N+1
+ K(NCOP,3)=LQBG
+ DO 210 J=1,5
+ P(NCOP,J)=P(LQBG,J)
+ 210 CONTINUE
+ DO 240 I=MINT(84)+1,N
+ ICOP=0
+ IF(K(I,1).GT.10) GOTO 240
+ IF(I.EQ.LQBG.OR.I.EQ.LQOUT) THEN
+ ICOP=I
+ ELSE
+ IORIG=I
+ 220 IORIG=K(IORIG,3)
+ IF(IORIG.EQ.LQBG.OR.IORIG.EQ.LQOUT) THEN
+ ICOP=IORIG
+ ELSEIF(IORIG.GT.MINT(84).AND.IORIG.LE.N) THEN
+ GOTO 220
+ ENDIF
+ ENDIF
+ IF(ICOP.NE.0) THEN
+ NCOP=NCOP+1
+ K(NCOP,3)=I
+ DO 230 J=1,5
+ P(NCOP,J)=P(I,J)
+ 230 CONTINUE
+ ENDIF
+ 240 CONTINUE
+
+C...Calculate relative rescaling factors.
+ SLC=3-2*LESD
+ PLCSUM=0D0
+ DO 250 I=N+2,NCOP
+ PLCSUM=PLCSUM+(P(I,4)+SLC*P(I,3))
+ 250 CONTINUE
+ DO 260 I=N+2,NCOP
+ V(I,1)=(P(I,4)+SLC*P(I,3))/PLCSUM
+ 260 CONTINUE
+
+C...Transfer extra three-momentum of current.
+ DO 280 I=N+2,NCOP
+ DO 270 J=1,3
+ P(I,J)=P(I,J)+V(I,1)*(QNEW(J)-QOLD(J))
+ 270 CONTINUE
+ P(I,4)=SQRT(P(I,5)**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ 280 CONTINUE
+
+C...Iterate change of initiator momentum to get energy right.
+ ITER=0
+ 290 ITER=ITER+1
+ PEEX=-P(N+1,4)-QNEW(4)
+ PEMV=-P(N+1,3)/P(N+1,4)
+ DO 300 I=N+2,NCOP
+ PEEX=PEEX+P(I,4)
+ PEMV=PEMV+V(I,1)*P(I,3)/P(I,4)
+ 300 CONTINUE
+ IF(ABS(PEMV).LT.1D-10) THEN
+ MINT(51)=1
+ MINT(57)=MINT(57)+1
+ RETURN
+ ENDIF
+ PZCH=-PEEX/PEMV
+ P(N+1,3)=P(N+1,3)+PZCH
+ P(N+1,4)=SQRT(P(N+1,5)**2+P(N+1,1)**2+P(N+1,2)**2+P(N+1,3)**2)
+ DO 310 I=N+2,NCOP
+ P(I,3)=P(I,3)+V(I,1)*PZCH
+ P(I,4)=SQRT(P(I,5)**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ 310 CONTINUE
+ IF(ITER.LT.10.AND.ABS(PEEX).GT.1D-6*P(N+1,4)) GOTO 290
+
+C...Modify momenta in event record.
+ HBE=2D0*(P(N+1,4)+P(LQBG,4))*(P(N+1,3)-P(LQBG,3))/
+ & ((P(N+1,4)+P(LQBG,4))**2+(P(N+1,3)-P(LQBG,3))**2)
+ IF(ABS(HBE).GE.1D0) THEN
+ MINT(51)=1
+ MINT(57)=MINT(57)+1
+ RETURN
+ ENDIF
+ I=MINT(83)+5-LESD
+ CALL PYROBO(I,I,0D0,0D0,0D0,0D0,HBE)
+ DO 330 I=N+1,NCOP
+ ICOP=K(I,3)
+ DO 320 J=1,4
+ P(ICOP,J)=P(I,J)
+ 320 CONTINUE
+ 330 CONTINUE
+ ENDIF
+
+C...Check minimum invariant mass of remnant system(s).
+ PSYS(0,4)=P(I1,4)+P(I2,4)+0.5D0*VINT(1)*(VINT(151)+VINT(152))
+ PSYS(0,3)=P(I1,3)+P(I2,3)+0.5D0*VINT(1)*(VINT(151)-VINT(152))
+ PMS(0)=MAX(0D0,PSYS(0,4)**2-PSYS(0,3)**2)
+ PMIN(0)=SQRT(PMS(0))
+ DO 340 JT=1,2
+ PSYS(JT,4)=0.5D0*VINT(1)*VINT(142+JT)
+ PSYS(JT,3)=PSYS(JT,4)*(-1)**(JT-1)
+ PMIN(JT)=0D0
+ IF(MINT(44+JT).EQ.1) GOTO 340
+ MINT(105)=MINT(102+JT)
+ MINT(109)=MINT(106+JT)
+ CALL PYSPLI(MINT(10+JT),MINT(12+JT),KFLCH(JT),KFLSP(JT))
+ IF(MINT(51).NE.0) THEN
+ MINT(57)=MINT(57)+1
+ RETURN
+ ENDIF
+ IF(KFLCH(JT).NE.0) PMIN(JT)=PMIN(JT)+PYMASS(KFLCH(JT))
+ IF(KFLSP(JT).NE.0) PMIN(JT)=PMIN(JT)+PYMASS(KFLSP(JT))
+ IF(KFLCH(JT)*KFLSP(JT).NE.0) PMIN(JT)=PMIN(JT)+0.5D0*PARP(111)
+ PMIN(JT)=SQRT(PMIN(JT)**2+P(MINT(83)+JT+2,1)**2+
+ & P(MINT(83)+JT+2,2)**2)
+ 340 CONTINUE
+ IF(PMIN(0)+PMIN(1)+PMIN(2).GT.VINT(1).OR.(MINT(45).GE.2.AND.
+ &PMIN(1).GT.PSYS(1,4)).OR.(MINT(46).GE.2.AND.PMIN(2).GT.
+ &PSYS(2,4))) THEN
+ MINT(51)=1
+ MINT(57)=MINT(57)+1
+ RETURN
+ ENDIF
+
+C...Loop over two remnants; skip if none there.
+ I=NS
+ DO 410 JT=1,2
+ ISN(JT)=0
+ IF(MINT(44+JT).EQ.1) GOTO 410
+ IF(JT.EQ.1) IPU=IPU1
+ IF(JT.EQ.2) IPU=IPU2
+
+C...Store first remnant parton.
+ I=I+1
+ IS(JT)=I
+ ISN(JT)=1
+ DO 350 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 350 CONTINUE
+ K(I,1)=1
+ K(I,2)=KFLSP(JT)
+ K(I,3)=MINT(83)+JT
+ P(I,5)=PYMASS(K(I,2))
+
+C...First parton colour connections and kinematics.
+ KCOL=KCHG(PYCOMP(KFLSP(JT)),2)
+ IF(KCOL.EQ.2) THEN
+ K(I,1)=3
+ K(I,4)=MSTU(5)*IPU+IPU
+ K(I,5)=MSTU(5)*IPU+IPU
+ K(IPU,4)=MOD(K(IPU,4),MSTU(5))+MSTU(5)*I
+ K(IPU,5)=MOD(K(IPU,5),MSTU(5))+MSTU(5)*I
+ ELSEIF(KCOL.NE.0) THEN
+ K(I,1)=3
+ KFLS=(3-KCOL*ISIGN(1,KFLSP(JT)))/2
+ K(I,KFLS+3)=IPU
+ K(IPU,6-KFLS)=MOD(K(IPU,6-KFLS),MSTU(5))+MSTU(5)*I
+ ENDIF
+ IF(KFLCH(JT).EQ.0) THEN
+ P(I,1)=-P(MINT(83)+JT+2,1)
+ P(I,2)=-P(MINT(83)+JT+2,2)
+ PMS(JT)=P(I,5)**2+P(I,1)**2+P(I,2)**2
+ PSYS(JT,3)=SQRT(MAX(0D0,PSYS(JT,4)**2-PMS(JT)))*(-1)**(JT-1)
+ P(I,3)=PSYS(JT,3)
+ P(I,4)=PSYS(JT,4)
+
+C...When extra remnant parton or hadron: store extra remnant.
+ ELSE
+ I=I+1
+ ISN(JT)=2
+ DO 360 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 360 CONTINUE
+ K(I,1)=1
+ K(I,2)=KFLCH(JT)
+ K(I,3)=MINT(83)+JT
+ P(I,5)=PYMASS(K(I,2))
+
+C...Find parton colour connections of extra remnant.
+ KCOL=KCHG(PYCOMP(KFLCH(JT)),2)
+ IF(KCOL.EQ.2) THEN
+ K(I,1)=3
+ K(I,4)=MSTU(5)*IPU+IPU
+ K(I,5)=MSTU(5)*IPU+IPU
+ K(IPU,4)=MOD(K(IPU,4),MSTU(5))+MSTU(5)*I
+ K(IPU,5)=MOD(K(IPU,5),MSTU(5))+MSTU(5)*I
+ ELSEIF(KCOL.NE.0) THEN
+ K(I,1)=3
+ KFLS=(3-KCOL*ISIGN(1,KFLCH(JT)))/2
+ K(I,KFLS+3)=IPU
+ K(IPU,6-KFLS)=MOD(K(IPU,6-KFLS),MSTU(5))+MSTU(5)*I
+ ENDIF
+
+C...Relative transverse momentum when two remnants.
+ LOOP=0
+ 370 LOOP=LOOP+1
+ CALL PYPTDI(1,P(I-1,1),P(I-1,2))
+ IF(IABS(MINT(10+JT)).LT.20) THEN
+ P(I-1,1)=0D0
+ P(I-1,2)=0D0
+ ELSE
+ P(I-1,1)=P(I-1,1)-0.5D0*P(MINT(83)+JT+2,1)
+ P(I-1,2)=P(I-1,2)-0.5D0*P(MINT(83)+JT+2,2)
+ ENDIF
+ PMS(JT+2)=P(I-1,5)**2+P(I-1,1)**2+P(I-1,2)**2
+ P(I,1)=-P(MINT(83)+JT+2,1)-P(I-1,1)
+ P(I,2)=-P(MINT(83)+JT+2,2)-P(I-1,2)
+ PMS(JT+4)=P(I,5)**2+P(I,1)**2+P(I,2)**2
+
+C...Meson or baryon; photon as meson. For splitup below.
+ IMB=1
+ IF(MOD(MINT(10+JT)/1000,10).NE.0) IMB=2
+
+C***Relative distribution for electron into two electrons. Temporary!
+ IF(IABS(MINT(10+JT)).LT.20.AND.MINT(14+JT).EQ.-MINT(10+JT))
+ & THEN
+ CHI(JT)=PYR(0)
+
+C...Relative distribution of electron energy into electron plus parton.
+ ELSEIF(IABS(MINT(10+JT)).LT.20) THEN
+ XHRD=VINT(140+JT)
+ XE=VINT(154+JT)
+ CHI(JT)=(XE-XHRD)/(1D0-XHRD)
+
+C...Relative distribution of energy for particle into two jets.
+ ELSEIF(IABS(KFLCH(JT)).LE.10.OR.KFLCH(JT).EQ.21) THEN
+ CHIK=PARP(92+2*IMB)
+ IF(MSTP(92).LE.1) THEN
+ IF(IMB.EQ.1) CHI(JT)=PYR(0)
+ IF(IMB.EQ.2) CHI(JT)=1D0-SQRT(PYR(0))
+ ELSEIF(MSTP(92).EQ.2) THEN
+ CHI(JT)=1D0-PYR(0)**(1D0/(1D0+CHIK))
+ ELSEIF(MSTP(92).EQ.3) THEN
+ CUT=2D0*0.3D0/VINT(1)
+ 380 CHI(JT)=PYR(0)**2
+ IF((CHI(JT)**2/(CHI(JT)**2+CUT**2))**0.25D0*
+ & (1D0-CHI(JT))**CHIK.LT.PYR(0)) GOTO 380
+ ELSEIF(MSTP(92).EQ.4) THEN
+ CUT=2D0*0.3D0/VINT(1)
+ CUTR=(1D0+SQRT(1D0+CUT**2))/CUT
+ 390 CHIR=CUT*CUTR**PYR(0)
+ CHI(JT)=(CHIR**2-CUT**2)/(2D0*CHIR)
+ IF((1D0-CHI(JT))**CHIK.LT.PYR(0)) GOTO 390
+ ELSE
+ CUT=2D0*0.3D0/VINT(1)
+ CUTA=CUT**(1D0-PARP(98))
+ CUTB=(1D0+CUT)**(1D0-PARP(98))
+ 400 CHI(JT)=(CUTA+PYR(0)*(CUTB-CUTA))**(1D0/(1D0-PARP(98)))
+ IF(((CHI(JT)+CUT)**2/(2D0*(CHI(JT)**2+CUT**2)))**
+ & (0.5D0*PARP(98))*(1D0-CHI(JT))**CHIK.LT.PYR(0)) GOTO 400
+ ENDIF
+
+C...Relative distribution of energy for particle into jet plus particle.
+ ELSE
+ IF(MSTP(94).LE.1) THEN
+ IF(IMB.EQ.1) CHI(JT)=PYR(0)
+ IF(IMB.EQ.2) CHI(JT)=1D0-SQRT(PYR(0))
+ IF(MOD(KFLCH(JT)/1000,10).NE.0) CHI(JT)=1D0-CHI(JT)
+ ELSEIF(MSTP(94).EQ.2) THEN
+ CHI(JT)=1D0-PYR(0)**(1D0/(1D0+PARP(93+2*IMB)))
+ IF(MOD(KFLCH(JT)/1000,10).NE.0) CHI(JT)=1D0-CHI(JT)
+ ELSEIF(MSTP(94).EQ.3) THEN
+ CALL PYZDIS(1,0,PMS(JT+4),ZZ)
+ CHI(JT)=ZZ
+ ELSE
+ CALL PYZDIS(1000,0,PMS(JT+4),ZZ)
+ CHI(JT)=ZZ
+ ENDIF
+ ENDIF
+
+C...Construct total transverse mass; reject if too large.
+ CHI(JT)=MAX(1D-8,MIN(1D0-1D-8,CHI(JT)))
+ PMS(JT)=PMS(JT+4)/CHI(JT)+PMS(JT+2)/(1D0-CHI(JT))
+ IF(PMS(JT).GT.PSYS(JT,4)**2) THEN
+ IF(LOOP.LT.100) THEN
+ GOTO 370
+ ELSE
+ MINT(51)=1
+ MINT(57)=MINT(57)+1
+ RETURN
+ ENDIF
+ ENDIF
+ PSYS(JT,3)=SQRT(MAX(0D0,PSYS(JT,4)**2-PMS(JT)))*(-1)**(JT-1)
+ VINT(158+JT)=CHI(JT)
+
+C...Subdivide longitudinal momentum according to value selected above.
+ PW1=CHI(JT)*(PSYS(JT,4)+ABS(PSYS(JT,3)))
+ P(IS(JT)+1,4)=0.5D0*(PW1+PMS(JT+4)/PW1)
+ P(IS(JT)+1,3)=0.5D0*(PW1-PMS(JT+4)/PW1)*(-1)**(JT-1)
+ P(IS(JT),4)=PSYS(JT,4)-P(IS(JT)+1,4)
+ P(IS(JT),3)=PSYS(JT,3)-P(IS(JT)+1,3)
+ ENDIF
+ 410 CONTINUE
+ N=I
+
+C...Check if longitudinal boosts needed - if so pick two systems.
+ PDEV=ABS(PSYS(0,4)+PSYS(1,4)+PSYS(2,4)-VINT(1))+
+ &ABS(PSYS(0,3)+PSYS(1,3)+PSYS(2,3))
+ IF(PDEV.LE.1D-6*VINT(1)) RETURN
+ IF(ISN(1).EQ.0) THEN
+ IR=0
+ IL=2
+ ELSEIF(ISN(2).EQ.0) THEN
+ IR=1
+ IL=0
+ ELSEIF(VINT(143).GT.0.2D0.AND.VINT(144).GT.0.2D0) THEN
+ IR=1
+ IL=2
+ ELSEIF(VINT(143).GT.0.2D0) THEN
+ IR=1
+ IL=0
+ ELSEIF(VINT(144).GT.0.2D0) THEN
+ IR=0
+ IL=2
+ ELSEIF(PMS(1)/PSYS(1,4)**2.GT.PMS(2)/PSYS(2,4)**2) THEN
+ IR=1
+ IL=0
+ ELSE
+ IR=0
+ IL=2
+ ENDIF
+ IG=3-IR-IL
+
+C...E+-pL wanted for system to be modified.
+ IF((IG.EQ.1.AND.ISN(1).EQ.0).OR.(IG.EQ.2.AND.ISN(2).EQ.0)) THEN
+ PPB=VINT(1)
+ PNB=VINT(1)
+ ELSE
+ PPB=VINT(1)-(PSYS(IG,4)+PSYS(IG,3))
+ PNB=VINT(1)-(PSYS(IG,4)-PSYS(IG,3))
+ ENDIF
+
+C...To keep x and Q2 in leptoproduction: do not count scattered lepton.
+ IF(IDISXQ.EQ.1.AND.IG.NE.0) THEN
+ PPB=PPB-(PSYS(0,4)+PSYS(0,3))
+ PNB=PNB-(PSYS(0,4)-PSYS(0,3))
+ DO 420 J=1,4
+ PSYS(0,J)=0D0
+ 420 CONTINUE
+ DO 450 I=MINT(84)+1,NS
+ IF(K(I,1).GT.10) GOTO 450
+ INCL=0
+ IORIG=I
+ 430 IF(IORIG.EQ.LQOUT.OR.IORIG.EQ.LPIN+2) INCL=1
+ IORIG=K(IORIG,3)
+ IF(IORIG.GT.LPIN) GOTO 430
+ IF(INCL.EQ.0) GOTO 450
+ DO 440 J=1,4
+ PSYS(0,J)=PSYS(0,J)+P(I,J)
+ 440 CONTINUE
+ 450 CONTINUE
+ PMS(0)=MAX(0D0,PSYS(0,4)**2-PSYS(0,3)**2)
+ PPB=PPB+(PSYS(0,4)+PSYS(0,3))
+ PNB=PNB+(PSYS(0,4)-PSYS(0,3))
+ ENDIF
+
+C...Construct longitudinal boosts.
+ DPMTB=PPB*PNB
+ DPMTR=PMS(IR)
+ DPMTL=PMS(IL)
+ DSQLAM=SQRT(MAX(0D0,(DPMTB-DPMTR-DPMTL)**2-4D0*DPMTR*DPMTL))
+ IF(DSQLAM.LE.1D-6*DPMTB) THEN
+ MINT(51)=1
+ MINT(57)=MINT(57)+1
+ RETURN
+ ENDIF
+ DSQSGN=SIGN(1D0,PSYS(IR,3)*PSYS(IL,4)-PSYS(IL,3)*PSYS(IR,4))
+ DRKR=(DPMTB+DPMTR-DPMTL+DSQLAM*DSQSGN)/
+ &(2D0*(PSYS(IR,4)+PSYS(IR,3))*PNB)
+ DRKL=(DPMTB+DPMTL-DPMTR+DSQLAM*DSQSGN)/
+ &(2D0*(PSYS(IL,4)-PSYS(IL,3))*PPB)
+ DBER=(DRKR**2-1D0)/(DRKR**2+1D0)
+ DBEL=-(DRKL**2-1D0)/(DRKL**2+1D0)
+
+C...Perform longitudinal boosts.
+ IF(IR.EQ.1.AND.ISN(1).EQ.1.AND.DBER.LE.-0.99999999D0) THEN
+ P(IS(1),3)=0D0
+ P(IS(1),4)=SQRT(P(IS(1),5)**2+P(IS(1),1)**2+P(IS(1),2)**2)
+ ELSEIF(IR.EQ.1) THEN
+ CALL PYROBO(IS(1),IS(1)+ISN(1)-1,0D0,0D0,0D0,0D0,DBER)
+ ELSEIF(IDISXQ.EQ.1) THEN
+ DO 470 I=I1,NS
+ INCL=0
+ IORIG=I
+ 460 IF(IORIG.EQ.LQOUT.OR.IORIG.EQ.LPIN+2) INCL=1
+ IORIG=K(IORIG,3)
+ IF(IORIG.GT.LPIN) GOTO 460
+ IF(INCL.EQ.1) CALL PYROBO(I,I,0D0,0D0,0D0,0D0,DBER)
+ 470 CONTINUE
+ ELSE
+ CALL PYROBO(I1,NS,0D0,0D0,0D0,0D0,DBER)
+ ENDIF
+ IF(IL.EQ.2.AND.ISN(2).EQ.1.AND.DBEL.GE.0.99999999D0) THEN
+ P(IS(2),3)=0D0
+ P(IS(2),4)=SQRT(P(IS(2),5)**2+P(IS(2),1)**2+P(IS(2),2)**2)
+ ELSEIF(IL.EQ.2) THEN
+ CALL PYROBO(IS(2),IS(2)+ISN(2)-1,0D0,0D0,0D0,0D0,DBEL)
+ ELSEIF(IDISXQ.EQ.1) THEN
+ DO 490 I=I1,NS
+ INCL=0
+ IORIG=I
+ 480 IF(IORIG.EQ.LQOUT.OR.IORIG.EQ.LPIN+2) INCL=1
+ IORIG=K(IORIG,3)
+ IF(IORIG.GT.LPIN) GOTO 480
+ IF(INCL.EQ.1) CALL PYROBO(I,I,0D0,0D0,0D0,0D0,DBEL)
+ 490 CONTINUE
+ ELSE
+ CALL PYROBO(I1,NS,0D0,0D0,0D0,0D0,DBEL)
+ ENDIF
+
+C...Final check that energy-momentum conservation worked.
+ PESUM=0D0
+ PZSUM=0D0
+ DO 500 I=MINT(84)+1,N
+ IF(K(I,1).GT.10) GOTO 500
+ PESUM=PESUM+P(I,4)
+ PZSUM=PZSUM+P(I,3)
+ 500 CONTINUE
+ PDEV=ABS(PESUM-VINT(1))+ABS(PZSUM)
+ IF(PDEV.GT.1D-4*VINT(1)) THEN
+ MINT(51)=1
+ MINT(57)=MINT(57)+1
+ RETURN
+ ENDIF
+
+C...Calculate rotation and boost from overall CM frame to
+C...hadronic CM frame in leptoproduction.
+ MINT(91)=0
+ IF(MINT(82).EQ.1.AND.(MINT(43).EQ.2.OR.MINT(43).EQ.3)) THEN
+ MINT(91)=1
+ LESD=1
+ IF(MINT(42).EQ.1) LESD=2
+ LPIN=MINT(83)+3-LESD
+
+C...Sum upp momenta of everything not lepton or photon to define boost.
+ DO 510 J=1,4
+ PSUM(J)=0D0
+ 510 CONTINUE
+ DO 530 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 530
+ IF(IABS(K(I,2)).GE.11.AND.IABS(K(I,2)).LE.20) GOTO 530
+ IF(K(I,2).EQ.22) GOTO 530
+ DO 520 J=1,4
+ PSUM(J)=PSUM(J)+P(I,J)
+ 520 CONTINUE
+ 530 CONTINUE
+ VINT(223)=-PSUM(1)/PSUM(4)
+ VINT(224)=-PSUM(2)/PSUM(4)
+ VINT(225)=-PSUM(3)/PSUM(4)
+
+C...Boost incoming hadron to hadronic CM frame to determine rotations.
+ K(N+1,1)=1
+ DO 540 J=1,5
+ P(N+1,J)=P(LPIN,J)
+ V(N+1,J)=V(LPIN,J)
+ 540 CONTINUE
+ CALL PYROBO(N+1,N+1,0D0,0D0,VINT(223),VINT(224),VINT(225))
+ VINT(222)=-PYANGL(P(N+1,1),P(N+1,2))
+ CALL PYROBO(N+1,N+1,0D0,VINT(222),0D0,0D0,0D0)
+ IF(LESD.EQ.2) THEN
+ VINT(221)=-PYANGL(P(N+1,3),P(N+1,1))
+ ELSE
+ VINT(221)=PYANGL(-P(N+1,3),P(N+1,1))
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMIGN
+C...Initializes treatment of new multiple interactions scenario,
+C...selects kinematics of hardest interaction if low-pT physics
+C...included in run, and generates all non-hardest interactions.
+
+ SUBROUTINE PYMIGN(MMUL)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+ EXTERNAL PYALPS
+ DOUBLE PRECISION PYALPS
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,
+ &/PYINT1/,/PYINT2/,/PYINT3/,/PYINT5/,/PYINT7/,/PYINTM/
+C...Local arrays and saved variables.
+ DIMENSION NMUL(20),SIGM(20),KSTR(500,2),VINTSV(80),
+ &WDTP(0:400),WDTE(0:400,0:5),XPQ(-25:25),KSAV(4,5),PSAV(4,5)
+ SAVE XT2,XT2FAC,XC2,XTS,IRBIN,RBIN,NMUL,SIGM,P83A,P83B,P83C,
+ &CQ2I,CQ2R,PIK,BDIV,B,PLOWB,PHIGHB,PALLB,S4A,S4B,S4C,POWIP,
+ &RPWIP,B2RPDV,B2RPMX,BAVG,VNT145,VNT146,VNT147
+
+C...Initialization of multiple interaction treatment.
+ IF(MMUL.EQ.1) THEN
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5000) MSTP(82)
+ ISUB=96
+ MINT(1)=96
+ VINT(63)=0D0
+ VINT(64)=0D0
+ VINT(143)=1D0
+ VINT(144)=1D0
+
+C...Loop over phase space points: xT2 choice in 20 bins.
+ 100 SIGSUM=0D0
+ DO 120 IXT2=1,20
+ NMUL(IXT2)=MSTP(83)
+ SIGM(IXT2)=0D0
+ DO 110 ITRY=1,MSTP(83)
+ RSCA=0.05D0*((21-IXT2)-PYR(0))
+ XT2=VINT(149)*(1D0+VINT(149))/(VINT(149)+RSCA)-VINT(149)
+ XT2=MAX(0.01D0*VINT(149),XT2)
+ VINT(25)=XT2
+
+C...Choose tau and y*. Calculate cos(theta-hat).
+ IF(PYR(0).LE.COEF(ISUB,1)) THEN
+ TAUT=(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)**PYR(0)
+ TAU=XT2*(1D0+TAUT)**2/(4D0*TAUT)
+ ELSE
+ TAU=XT2*(1D0+TAN(PYR(0)*ATAN(SQRT(1D0/XT2-1D0)))**2)
+ ENDIF
+ VINT(21)=TAU
+ CALL PYKLIM(2)
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ CALL PYKMAP(2,MYST,PYR(0))
+ VINT(23)=SQRT(MAX(0D0,1D0-XT2/TAU))*(-1)**INT(1.5D0+PYR(0))
+
+C...Calculate differential cross-section.
+ VINT(71)=0.5D0*VINT(1)*SQRT(XT2)
+ CALL PYSIGH(NCHN,SIGS)
+ SIGM(IXT2)=SIGM(IXT2)+SIGS
+ 110 CONTINUE
+ SIGSUM=SIGSUM+SIGM(IXT2)
+ 120 CONTINUE
+ SIGSUM=SIGSUM/(20D0*MSTP(83))
+
+C...Reject result if sigma(parton-parton) is smaller than hadronic one.
+ IF(SIGSUM.LT.1.1D0*SIGT(0,0,5)) THEN
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5100)
+ & PARP(82)*(VINT(1)/PARP(89))**PARP(90),SIGSUM
+ PARP(82)=0.9D0*PARP(82)
+ VINT(149)=4D0*(PARP(82)*(VINT(1)/PARP(89))**PARP(90))**2/
+ & VINT(2)
+ GOTO 100
+ ENDIF
+ IF(MSTP(122).GE.1) WRITE(MSTU(11),5200)
+ & PARP(82)*(VINT(1)/PARP(89))**PARP(90), SIGSUM
+
+C...Start iteration to find k factor.
+ YKE=SIGSUM/MAX(1D-10,SIGT(0,0,5))
+ P83A=(1D0-PARP(83))**2
+ P83B=2D0*PARP(83)*(1D0-PARP(83))
+ P83C=PARP(83)**2
+ CQ2I=1D0/PARP(84)**2
+ CQ2R=2D0/(1D0+PARP(84)**2)
+ SO=0.5D0
+ XI=0D0
+ YI=0D0
+ XF=0D0
+ YF=0D0
+ XK=0.5D0
+ IIT=0
+ 130 IF(IIT.EQ.0) THEN
+ XK=2D0*XK
+ ELSEIF(IIT.EQ.1) THEN
+ XK=0.5D0*XK
+ ELSE
+ XK=XI+(YKE-YI)*(XF-XI)/(YF-YI)
+ ENDIF
+
+C...Evaluate overlap integrals. Find where to divide the b range.
+ IF(MSTP(82).EQ.2) THEN
+ SP=0.5D0*PARU(1)*(1D0-EXP(-XK))
+ SOP=SP/PARU(1)
+ ELSE
+ IF(MSTP(82).EQ.3) THEN
+ DELTAB=0.02D0
+ ELSEIF(MSTP(82).EQ.4) THEN
+ DELTAB=MIN(0.01D0,0.05D0*PARP(84))
+ ELSE
+ POWIP=MAX(0.4D0,PARP(83))
+ RPWIP=2D0/POWIP-1D0
+ DELTAB=MAX(0.02D0,0.02D0*(2D0/POWIP)**(1D0/POWIP))
+ SO=0D0
+ ENDIF
+ SP=0D0
+ SOP=0D0
+ BSP=0D0
+ SOHIGH=0D0
+ IBDIV=0
+ B=-0.5D0*DELTAB
+ 140 B=B+DELTAB
+ IF(MSTP(82).EQ.3) THEN
+ OV=EXP(-B**2)/PARU(2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ OV=(P83A*EXP(-MIN(50D0,B**2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B**2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B**2*CQ2I)))/PARU(2)
+ ELSE
+ OV=EXP(-B**POWIP)/PARU(2)
+ SO=SO+PARU(2)*B*DELTAB*OV
+ ENDIF
+ IF(IBDIV.EQ.1) SOHIGH=SOHIGH+PARU(2)*B*DELTAB*OV
+ PACC=1D0-EXP(-MIN(50D0,PARU(1)*XK*OV))
+ SP=SP+PARU(2)*B*DELTAB*PACC
+ SOP=SOP+PARU(2)*B*DELTAB*OV*PACC
+ BSP=BSP+B*PARU(2)*B*DELTAB*PACC
+ IF(IBDIV.EQ.0.AND.PARU(1)*XK*OV.LT.1D0) THEN
+ IBDIV=1
+ BDIV=B+0.5D0*DELTAB
+ ENDIF
+ IF(B.LT.1D0.OR.B*PACC.GT.1D-6) GOTO 140
+ ENDIF
+ YK=PARU(1)*XK*SO/SP
+
+C...Continue iteration until convergence.
+ IF(YK.LT.YKE) THEN
+ XI=XK
+ YI=YK
+ IF(IIT.EQ.1) IIT=2
+ ELSE
+ XF=XK
+ YF=YK
+ IF(IIT.EQ.0) IIT=1
+ ENDIF
+ IF(ABS(YK-YKE).GE.1D-5*YKE) GOTO 130
+
+C...Store some results for subsequent use.
+ BAVG=BSP/SP
+ VINT(145)=SIGSUM
+ VINT(146)=SOP/SO
+ VINT(147)=SOP/SP
+ VNT145=VINT(145)
+ VNT146=VINT(146)
+ VNT147=VINT(147)
+C...PIK = PARU(1)*XK = (VINT(146)/VINT(147))*sigma_jet/sigma_nondiffr.
+ PIK=(VNT146/VNT147)*YKE
+
+C...Find relative weight for low and high impact parameter..
+ PLOWB=PARU(1)*BDIV**2
+ IF(MSTP(82).EQ.3) THEN
+ PHIGHB=PIK*0.5*EXP(-BDIV**2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ S4A=P83A*EXP(-BDIV**2)
+ S4B=P83B*EXP(-BDIV**2*CQ2R)
+ S4C=P83C*EXP(-BDIV**2*CQ2I)
+ PHIGHB=PIK*0.5*(S4A+S4B+S4C)
+ ELSEIF(PARP(83).GE.1.999D0) THEN
+ PHIGHB=PIK*SOHIGH
+ B2RPDV=BDIV**POWIP
+ ELSE
+ PHIGHB=PIK*SOHIGH
+ B2RPDV=BDIV**POWIP
+ B2RPMX=MAX(2D0*RPWIP,B2RPDV)
+ ENDIF
+ PALLB=PLOWB+PHIGHB
+
+C...Initialize iteration in xT2 for hardest interaction.
+ ELSEIF(MMUL.EQ.2) THEN
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ IF(MSTP(82).LE.0) THEN
+ ELSEIF(MSTP(82).EQ.1) THEN
+ XT2=1D0
+ SIGRAT=XSEC(96,1)/MAX(1D-10,VINT(315)*VINT(316)*SIGT(0,0,5))
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGRAT=SIGRAT*
+ & VINT(317)/(VINT(318)*VINT(320))
+ XT2FAC=SIGRAT*VINT(149)/(1D0-VINT(149))
+ ELSEIF(MSTP(82).EQ.2) THEN
+ XT2=1D0
+ XT2FAC=VNT146*XSEC(96,1)/MAX(1D-10,SIGT(0,0,5))*
+ & VINT(149)*(1D0+VINT(149))
+ ELSE
+ XC2=4D0*CKIN(3)**2/VINT(2)
+ IF(CKIN(3).LE.CKIN(5).OR.MINT(82).GE.2) XC2=0D0
+ ENDIF
+
+C...Select impact parameter for hardest interaction.
+ IF(MSTP(82).LE.2) RETURN
+ 142 IF(PYR(0)*PALLB.LT.PLOWB) THEN
+C...Treatment in low b region.
+ MINT(39)=1
+ B=BDIV*SQRT(PYR(0))
+ IF(MSTP(82).EQ.3) THEN
+ OV=EXP(-B**2)/PARU(2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ OV=(P83A*EXP(-MIN(50D0,B**2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B**2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B**2*CQ2I)))/PARU(2)
+ ELSE
+ OV=EXP(-B**POWIP)/PARU(2)
+ ENDIF
+ VINT(148)=OV/VNT147
+ PACC=1D0-EXP(-MIN(50D0,PIK*OV))
+ XT2=1D0
+ XT2FAC=VNT146*VINT(148)*XSEC(96,1)/MAX(1D-10,SIGT(0,0,5))*
+ & VINT(149)*(1D0+VINT(149))
+ ELSE
+C...Treatment in high b region.
+ MINT(39)=2
+ IF(MSTP(82).EQ.3) THEN
+ B=SQRT(BDIV**2-LOG(PYR(0)))
+ OV=EXP(-B**2)/PARU(2)
+ ELSEIF(MSTP(82).EQ.4) THEN
+ S4RNDM=PYR(0)*(S4A+S4B+S4C)
+ IF(S4RNDM.LT.S4A) THEN
+ B=SQRT(BDIV**2-LOG(PYR(0)))
+ ELSEIF(S4RNDM.LT.S4A+S4B) THEN
+ B=SQRT(BDIV**2-LOG(PYR(0))/CQ2R)
+ ELSE
+ B=SQRT(BDIV**2-LOG(PYR(0))/CQ2I)
+ ENDIF
+ OV=(P83A*EXP(-MIN(50D0,B**2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B**2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B**2*CQ2I)))/PARU(2)
+ ELSEIF(PARP(83).GE.1.999D0) THEN
+ 144 B2RPW=B2RPDV-LOG(PYR(0))
+ ACCIP=(B2RPW/B2RPDV)**RPWIP
+ IF(ACCIP.LT.PYR(0)) GOTO 144
+ OV=EXP(-B2RPW)/PARU(2)
+ B=B2RPW**(1D0/POWIP)
+ ELSE
+ 146 B2RPW=B2RPDV-2D0*LOG(PYR(0))
+ ACCIP=(B2RPW/B2RPMX)**RPWIP*EXP(-0.5D0*(B2RPW-B2RPMX))
+ IF(ACCIP.LT.PYR(0)) GOTO 146
+ OV=EXP(-B2RPW)/PARU(2)
+ B=B2RPW**(1D0/POWIP)
+ ENDIF
+ VINT(148)=OV/VNT147
+ PACC=(1D0-EXP(-MIN(50D0,PIK*OV)))/(PIK*OV)
+ ENDIF
+ IF(PACC.LT.PYR(0)) GOTO 142
+ VINT(139)=B/BAVG
+
+ ELSEIF(MMUL.EQ.3) THEN
+C...Low-pT or multiple interactions (first semihard interaction):
+C...choose xT2 according to dpT2/pT2**2*exp(-(sigma above pT2)/norm)
+C...or (MSTP(82)>=2) dpT2/(pT2+pT0**2)**2*exp(-....).
+ ISUB=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ IF(MSTP(82).LE.0) THEN
+ XT2=0D0
+ ELSEIF(MSTP(82).EQ.1) THEN
+ XT2=XT2FAC*XT2/(XT2FAC-XT2*LOG(PYR(0)))
+C...Use with "Sudakov" for low b values when impact parameter dependence.
+ ELSEIF(MSTP(82).EQ.2.OR.MINT(39).EQ.1) THEN
+ IF(XT2.LT.1D0.AND.EXP(-XT2FAC*XT2/(VINT(149)*(XT2+
+ & VINT(149)))).GT.PYR(0)) XT2=1D0
+ IF(XT2.GE.1D0) THEN
+ XT2=(1D0+VINT(149))*XT2FAC/(XT2FAC-(1D0+VINT(149))*LOG(1D0-
+ & PYR(0)*(1D0-EXP(-XT2FAC/(VINT(149)*(1D0+VINT(149)))))))-
+ & VINT(149)
+ ELSE
+ XT2=-XT2FAC/LOG(EXP(-XT2FAC/(XT2+VINT(149)))+PYR(0)*
+ & (EXP(-XT2FAC/VINT(149))-EXP(-XT2FAC/(XT2+VINT(149)))))-
+ & VINT(149)
+ ENDIF
+ XT2=MAX(0.01D0*VINT(149),XT2)
+C...Use without "Sudakov" for high b values when impact parameter dep.
+ ELSE
+ XT2=(XC2+VINT(149))*(1D0+VINT(149))/(1D0+VINT(149)-
+ & PYR(0)*(1D0-XC2))-VINT(149)
+ XT2=MAX(0.01D0*VINT(149),XT2)
+ ENDIF
+ VINT(25)=XT2
+
+C...Low-pT: choose xT2, tau, y* and cos(theta-hat) fixed.
+ IF(MSTP(82).LE.1.AND.XT2.LT.VINT(149)) THEN
+ IF(MINT(82).EQ.1) NGEN(0,1)=NGEN(0,1)-MINT(143)
+ IF(MINT(82).EQ.1) NGEN(ISUB,1)=NGEN(ISUB,1)-MINT(143)
+ ISUB=95
+ MINT(1)=ISUB
+ VINT(21)=1D-12*VINT(149)
+ VINT(22)=0D0
+ VINT(23)=0D0
+ VINT(25)=1D-12*VINT(149)
+
+ ELSE
+C...Multiple interactions (first semihard interaction).
+C...Choose tau and y*. Calculate cos(theta-hat).
+ IF(PYR(0).LE.COEF(ISUB,1)) THEN
+ TAUT=(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)**PYR(0)
+ TAU=XT2*(1D0+TAUT)**2/(4D0*TAUT)
+ ELSE
+ TAU=XT2*(1D0+TAN(PYR(0)*ATAN(SQRT(1D0/XT2-1D0)))**2)
+ ENDIF
+ VINT(21)=TAU
+ CALL PYKLIM(2)
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ CALL PYKMAP(2,MYST,PYR(0))
+ VINT(23)=SQRT(MAX(0D0,1D0-XT2/TAU))*(-1)**INT(1.5D0+PYR(0))
+ ENDIF
+ VINT(71)=0.5D0*VINT(1)*SQRT(VINT(25))
+
+C...Store results of cross-section calculation.
+ ELSEIF(MMUL.EQ.4) THEN
+ ISUB=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ XTS=VINT(25)
+ IF(ISET(ISUB).EQ.1) XTS=VINT(21)
+ IF(ISET(ISUB).EQ.2)
+ & XTS=(4D0*VINT(48)+2D0*VINT(63)+2D0*VINT(64))/VINT(2)
+ IF(ISET(ISUB).GE.3.AND.ISET(ISUB).LE.5) XTS=VINT(26)
+ RBIN=MAX(0.000001D0,MIN(0.999999D0,XTS*(1D0+VINT(149))/
+ & (XTS+VINT(149))))
+ IRBIN=INT(1D0+20D0*RBIN)
+ IF(ISUB.EQ.96.AND.MSTP(171).EQ.0) THEN
+ NMUL(IRBIN)=NMUL(IRBIN)+1
+ SIGM(IRBIN)=SIGM(IRBIN)+VINT(153)
+ ENDIF
+
+C...Choose impact parameter if not already done.
+ ELSEIF(MMUL.EQ.5) THEN
+ ISUB=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ 150 IF(MINT(39).GT.0) THEN
+ ELSEIF(MSTP(82).EQ.3) THEN
+ EXPB2=PYR(0)
+ B2=-LOG(PYR(0))
+ VINT(148)=EXPB2/(PARU(2)*VNT147)
+ VINT(139)=SQRT(B2)/BAVG
+ ELSEIF(MSTP(82).EQ.4) THEN
+ RTYPE=PYR(0)
+ IF(RTYPE.LT.P83A) THEN
+ B2=-LOG(PYR(0))
+ ELSEIF(RTYPE.LT.P83A+P83B) THEN
+ B2=-LOG(PYR(0))/CQ2R
+ ELSE
+ B2=-LOG(PYR(0))/CQ2I
+ ENDIF
+ VINT(148)=(P83A*EXP(-MIN(50D0,B2))+
+ & P83B*CQ2R*EXP(-MIN(50D0,B2*CQ2R))+
+ & P83C*CQ2I*EXP(-MIN(50D0,B2*CQ2I)))/(PARU(2)*VNT147)
+ VINT(139)=SQRT(B2)/BAVG
+ ELSEIF(PARP(83).GE.1.999D0) THEN
+ POWIP=MAX(2D0,PARP(83))
+ RPWIP=2D0/POWIP-1D0
+ PROB1=POWIP/(2D0*EXP(-1D0)+POWIP)
+ 160 IF(PYR(0).LT.PROB1) THEN
+ B2RPW=PYR(0)**(0.5D0*POWIP)
+ ACCIP=EXP(-B2RPW)
+ ELSE
+ B2RPW=1D0-LOG(PYR(0))
+ ACCIP=B2RPW**RPWIP
+ ENDIF
+ IF(ACCIP.LT.PYR(0)) GOTO 160
+ VINT(148)=EXP(-B2RPW)/(PARU(2)*VNT147)
+ VINT(139)=B2RPW**(1D0/POWIP)/BAVG
+ ELSE
+ POWIP=MAX(0.4D0,PARP(83))
+ RPWIP=2D0/POWIP-1D0
+ PROB1=RPWIP/(RPWIP+2D0**RPWIP*EXP(-RPWIP))
+ 170 IF(PYR(0).LT.PROB1) THEN
+ B2RPW=2D0*RPWIP*PYR(0)
+ ACCIP=(B2RPW/RPWIP)**RPWIP*EXP(RPWIP-B2RPW)
+ ELSE
+ B2RPW=2D0*(RPWIP-LOG(PYR(0)))
+ ACCIP=(0.5D0*B2RPW/RPWIP)**RPWIP*EXP(RPWIP-0.5D0*B2RPW)
+ ENDIF
+ IF(ACCIP.LT .PYR(0)) GOTO 170
+ VINT(148)=EXP(-B2RPW)/(PARU(2)*VNT147)
+ VINT(139)=B2RPW**(1D0/POWIP)/BAVG
+ ENDIF
+
+C...Multiple interactions (variable impact parameter) : reject with
+C...probability exp(-overlap*cross-section above pT/normalization).
+C...Does not apply to low-b region, where "Sudakov" already included.
+ VINT(150)=1D0
+ IF(MINT(39).NE.1) THEN
+ RNCOR=(IRBIN-20D0*RBIN)*NMUL(IRBIN)
+ SIGCOR=(IRBIN-20D0*RBIN)*SIGM(IRBIN)
+ DO 180 IBIN=IRBIN+1,20
+ RNCOR=RNCOR+NMUL(IBIN)
+ SIGCOR=SIGCOR+SIGM(IBIN)
+ 180 CONTINUE
+ SIGABV=(SIGCOR/RNCOR)*VINT(149)*(1D0-XTS)/(XTS+VINT(149))
+ IF(MSTP(171).EQ.1) SIGABV=SIGABV*VINT(2)/VINT(289)
+ VINT(150)=EXP(-MIN(50D0,VNT146*VINT(148)*
+ & SIGABV/MAX(1D-10,SIGT(0,0,5))))
+ ENDIF
+ IF(MSTP(86).EQ.3.OR.(MSTP(86).EQ.2.AND.ISUB.NE.11.AND.
+ & ISUB.NE.12.AND.ISUB.NE.13.AND.ISUB.NE.28.AND.ISUB.NE.53
+ & .AND.ISUB.NE.68.AND.ISUB.NE.95.AND.ISUB.NE.96)) THEN
+ IF(VINT(150).LT.PYR(0)) GOTO 150
+ VINT(150)=1D0
+ ENDIF
+
+C...Generate additional multiple semihard interactions.
+ ELSEIF(MMUL.EQ.6) THEN
+
+C...Save data for hardest initeraction, to be restored.
+ ISUBSV=MINT(1)
+ VINT(145)=VNT145
+ VINT(146)=VNT146
+ VINT(147)=VNT147
+ M13SV=MINT(13)
+ M14SV=MINT(14)
+ M15SV=MINT(15)
+ M16SV=MINT(16)
+ M21SV=MINT(21)
+ M22SV=MINT(22)
+ DO 190 J=11,80
+ VINTSV(J)=VINT(J)
+ 190 CONTINUE
+ V141SV=VINT(141)
+ V142SV=VINT(142)
+
+C...Store data on hardest interaction.
+ XMI(1,1)=VINT(141)
+ XMI(2,1)=VINT(142)
+ PT2MI(1)=VINT(54)
+ IMISEP(0)=MINT(84)
+ IMISEP(1)=N
+
+C...Change process to generate; sum of x values so far.
+ ISUB=96
+ MINT(1)=96
+ VINT(143)=1D0-VINT(141)
+ VINT(144)=1D0-VINT(142)
+ VINT(151)=0D0
+ VINT(152)=0D0
+
+C...Initialize factors for PDF reshaping.
+ DO 230 JS=1,2
+ KFBEAM=MINT(10+JS)
+ KFABM=IABS(KFBEAM)
+ KFSBM=ISIGN(1,KFBEAM)
+
+C...Zero flavour content of incoming beam particle.
+ KFIVAL(JS,1)=0
+ KFIVAL(JS,2)=0
+ KFIVAL(JS,3)=0
+C...Flavour content of baryon.
+ IF(KFABM.GT.1000) THEN
+ KFIVAL(JS,1)=KFSBM*MOD(KFABM/1000,10)
+ KFIVAL(JS,2)=KFSBM*MOD(KFABM/100,10)
+ KFIVAL(JS,3)=KFSBM*MOD(KFABM/10,10)
+C...Flavour content of pi+-, K+-.
+ ELSEIF(KFABM.EQ.211) THEN
+ KFIVAL(JS,1)=KFSBM*2
+ KFIVAL(JS,2)=-KFSBM
+ ELSEIF(KFABM.EQ.321) THEN
+ KFIVAL(JS,1)=-KFSBM*3
+ KFIVAL(JS,2)=KFSBM*2
+C...Flavour content of pi0, gamma, K0S, K0L not defined yet.
+ ENDIF
+
+C...Zero initial valence and companion content.
+ DO 200 IFL=-6,6
+ NVC(JS,IFL)=0
+ 200 CONTINUE
+
+C...Initiate listing of all incoming partons from two sides.
+ NMI(JS)=0
+ DO 210 I=MINT(84)+1,N
+ IF(K(I,3).EQ.MINT(83)+2+JS) THEN
+ IMI(JS,1,1)=I
+ IMI(JS,1,2)=0
+ ENDIF
+ 210 CONTINUE
+
+C...Decide whether quarks in hard scattering were valence or sea.
+ IFL=K(IMI(JS,1,1),2)
+ IF (IABS(IFL).GT.6) GOTO 230
+
+C...Get PDFs at X and Q2 of the parton shower initiator for the
+C...hard scattering.
+ X=VINT(140+JS)
+ IF(MSTP(61).GE.1) THEN
+ Q2=PARP(62)**2
+ ELSE
+ Q2=VINT(54)
+ ENDIF
+C...Note: XPSVC = x*pdf.
+ MINT(30)=JS
+ CALL PYPDFU(KFBEAM,X,Q2,XPQ)
+ SEA=XPSVC(IFL,-1)
+ VAL=XPSVC(IFL,0)
+
+C...Decide (Extra factor x cancels in the division).
+ RVCS=PYR(0)*(SEA+VAL)
+ IVNOW=1
+ 220 IF (RVCS.LE.VAL.AND.IVNOW.GE.1) THEN
+C...Safety check that valence present; pi0/gamma/K0S/K0L special cases.
+ IVNOW=0
+ IF(KFIVAL(JS,1).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,2).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,3).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,1).EQ.0) THEN
+ IF(KFBEAM.EQ.111.AND.IABS(IFL).LE.2) IVNOW=1
+ IF(KFBEAM.EQ.22.AND.IABS(IFL).LE.5) IVNOW=1
+ IF((KFBEAM.EQ.130.OR.KFBEAM.EQ.310).AND.
+ & (IABS(IFL).EQ.1.OR.IABS(IFL).EQ.3)) IVNOW=1
+ ENDIF
+ IF(IVNOW.EQ.0) GOTO 220
+C...Mark valence.
+ IMI(JS,1,2)=0
+C...Sets valence content of gamma, pi0, K0S, K0L if not done.
+ IF(KFIVAL(JS,1).EQ.0) THEN
+ IF(KFBEAM.EQ.111.OR.KFBEAM.EQ.22) THEN
+ KFIVAL(JS,1)=IFL
+ KFIVAL(JS,2)=-IFL
+ ELSEIF(KFBEAM.EQ.130.OR.KFBEAM.EQ.310) THEN
+ KFIVAL(JS,1)=IFL
+ IF(IABS(IFL).EQ.1) KFIVAL(JS,2)=ISIGN(3,-IFL)
+ IF(IABS(IFL).NE.1) KFIVAL(JS,2)=ISIGN(1,-IFL)
+ ENDIF
+ ENDIF
+
+C...If sea, add opposite sign companion parton. Store X and I.
+ ELSE
+ NVC(JS,-IFL)=NVC(JS,-IFL)+1
+ XASSOC(JS,-IFL,NVC(JS,-IFL))=X
+C...Set pointer to companion
+ IMI(JS,1,2)=-NVC(JS,-IFL)
+ ENDIF
+ 230 CONTINUE
+
+C...Update counter number of multiple interactions.
+ NMI(1)=1
+ NMI(2)=1
+
+C...Set up starting values for iteration in xT2.
+ IF(MSTP(86).EQ.3.OR.(MSTP(86).EQ.2.AND.ISUBSV.NE.11.AND.
+ & ISUBSV.NE.12.AND.ISUBSV.NE.13.AND.ISUBSV.NE.28.AND.
+ & ISUBSV.NE.53.AND.ISUBSV.NE.68.AND.ISUBSV.NE.95.AND.
+ & ISUBSV.NE.96)) THEN
+ XT2=(1D0-VINT(141))*(1D0-VINT(142))
+ ELSE
+ XT2=VINT(25)
+ IF(ISET(ISUBSV).EQ.1) XT2=VINT(21)
+ IF(ISET(ISUBSV).EQ.2)
+ & XT2=(4D0*VINT(48)+2D0*VINT(63)+2D0*VINT(64))/VINT(2)
+ IF(ISET(ISUBSV).GE.3.AND.ISET(ISUBSV).LE.5) XT2=VINT(26)
+ ENDIF
+ IF(MSTP(82).LE.1) THEN
+ SIGRAT=XSEC(ISUB,1)/MAX(1D-10,VINT(315)*VINT(316)*SIGT(0,0,5))
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGRAT=SIGRAT*
+ & VINT(317)/(VINT(318)*VINT(320))
+ XT2FAC=SIGRAT*VINT(149)/(1D0-VINT(149))
+ ELSE
+ XT2FAC=VNT146*VINT(148)*XSEC(ISUB,1)/
+ & MAX(1D-10,SIGT(0,0,5))*VINT(149)*(1D0+VINT(149))
+ ENDIF
+ VINT(63)=0D0
+ VINT(64)=0D0
+
+C...Iterate downwards in xT2.
+ 240 IF((MINT(35).EQ.2.AND.MSTP(81).EQ.10).OR.ISUBSV.EQ.95) THEN
+ XT2=0D0
+ GOTO 440
+ ELSEIF(MSTP(82).LE.1) THEN
+ XT2=XT2FAC*XT2/(XT2FAC-XT2*LOG(PYR(0)))
+ IF(XT2.LT.VINT(149)) GOTO 440
+ ELSE
+ IF(XT2.LE.0.01001D0*VINT(149)) GOTO 440
+ XT2=XT2FAC*(XT2+VINT(149))/(XT2FAC-(XT2+VINT(149))*
+ & LOG(PYR(0)))-VINT(149)
+ IF(XT2.LE.0D0) GOTO 440
+ XT2=MAX(0.01D0*VINT(149),XT2)
+ ENDIF
+ VINT(25)=XT2
+
+C...Choose tau and y*. Calculate cos(theta-hat).
+ IF(PYR(0).LE.COEF(ISUB,1)) THEN
+ TAUT=(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)**PYR(0)
+ TAU=XT2*(1D0+TAUT)**2/(4D0*TAUT)
+ ELSE
+ TAU=XT2*(1D0+TAN(PYR(0)*ATAN(SQRT(1D0/XT2-1D0)))**2)
+ ENDIF
+ VINT(21)=TAU
+C...New: require shat > 1.
+ IF(TAU*VINT(2).LT.1D0) GOTO 240
+ CALL PYKLIM(2)
+ RYST=PYR(0)
+ MYST=1
+ IF(RYST.GT.COEF(ISUB,8)) MYST=2
+ IF(RYST.GT.COEF(ISUB,8)+COEF(ISUB,9)) MYST=3
+ CALL PYKMAP(2,MYST,PYR(0))
+ VINT(23)=SQRT(MAX(0D0,1D0-XT2/TAU))*(-1)**INT(1.5D0+PYR(0))
+
+C...Check that x not used up. Accept or reject kinematical variables.
+ X1M=SQRT(TAU)*EXP(VINT(22))
+ X2M=SQRT(TAU)*EXP(-VINT(22))
+ IF(VINT(143)-X1M.LT.0.01D0.OR.VINT(144)-X2M.LT.0.01D0) GOTO 240
+ VINT(71)=0.5D0*VINT(1)*SQRT(XT2)
+ CALL PYSIGH(NCHN,SIGS)
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGS=SIGS*VINT(320)
+ IF(SIGS.LT.XSEC(ISUB,1)*PYR(0)) GOTO 240
+ IF(MINT(141).NE.0.OR.MINT(142).NE.0) SIGS=SIGS/VINT(320)
+
+C...Reset K, P and V vectors.
+ DO 260 I=N+1,N+4
+ DO 250 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 250 CONTINUE
+ 260 CONTINUE
+ PT=0.5D0*VINT(1)*SQRT(XT2)
+
+C...Choose flavour of reacting partons (and subprocess).
+ RSIGS=SIGS*PYR(0)
+ DO 270 ICHN=1,NCHN
+ KFL1=ISIG(ICHN,1)
+ KFL2=ISIG(ICHN,2)
+ ICONMI=ISIG(ICHN,3)
+ RSIGS=RSIGS-SIGH(ICHN)
+ IF(RSIGS.LE.0D0) GOTO 280
+ 270 CONTINUE
+
+C...Reassign to appropriate process codes.
+ 280 ISUBMI=ICONMI/10
+ ICONMI=MOD(ICONMI,10)
+
+C...Choose new quark flavour for annihilation graphs
+ IF(ISUBMI.EQ.12.OR.ISUBMI.EQ.53) THEN
+ SH=TAU*VINT(2)
+ CALL PYWIDT(21,SH,WDTP,WDTE)
+ 290 RKFL=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))*PYR(0)
+ DO 300 I=1,MDCY(21,3)
+ KFLF=KFDP(I+MDCY(21,2)-1,1)
+ RKFL=RKFL-(WDTE(I,1)+WDTE(I,2)+WDTE(I,4))
+ IF(RKFL.LE.0D0) GOTO 310
+ 300 CONTINUE
+ 310 IF(ISUBMI.EQ.53.AND.ICONMI.LE.2) THEN
+ IF(KFLF.GE.4) GOTO 290
+ ELSEIF(ISUBMI.EQ.53.AND.ICONMI.LE.4) THEN
+ KFLF=4
+ ICONMI=ICONMI-2
+ ELSEIF(ISUBMI.EQ.53) THEN
+ KFLF=5
+ ICONMI=ICONMI-4
+ ENDIF
+ ENDIF
+
+C...Final state flavours and colour flow: default values
+ JS=1
+ KFL3=KFL1
+ KFL4=KFL2
+ KCC=20
+ KCS=ISIGN(1,KFL1)
+
+ IF(ISUBMI.EQ.11) THEN
+C...f + f' -> f + f' (g exchange); th = (p(f)-p(f))**2
+ KCC=ICONMI
+ IF(KFL1*KFL2.LT.0) KCC=KCC+2
+
+ ELSEIF(ISUBMI.EQ.12) THEN
+C...f + fbar -> f' + fbar'; th = (p(f)-p(f'))**2
+ KFL3=ISIGN(KFLF,KFL1)
+ KFL4=-KFL3
+ KCC=4
+
+ ELSEIF(ISUBMI.EQ.13) THEN
+C...f + fbar -> g + g; th arbitrary
+ KFL3=21
+ KFL4=21
+ KCC=ICONMI+4
+
+ ELSEIF(ISUBMI.EQ.28) THEN
+C...f + g -> f + g; th = (p(f)-p(f))**2
+ IF(KFL1.EQ.21) JS=2
+ KCC=ICONMI+6
+ IF(KFL1.EQ.21) KCC=KCC+2
+ IF(KFL1.NE.21) KCS=ISIGN(1,KFL1)
+ IF(KFL2.NE.21) KCS=ISIGN(1,KFL2)
+
+ ELSEIF(ISUBMI.EQ.53) THEN
+C...g + g -> f + fbar; th arbitrary
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ KFL3=ISIGN(KFLF,KCS)
+ KFL4=-KFL3
+ KCC=ICONMI+10
+
+ ELSEIF(ISUBMI.EQ.68) THEN
+C...g + g -> g + g; th arbitrary
+ KCC=ICONMI+12
+ KCS=(-1)**INT(1.5D0+PYR(0))
+ ENDIF
+
+C...Store flavours of scattering.
+ MINT(13)=KFL1
+ MINT(14)=KFL2
+ MINT(15)=KFL1
+ MINT(16)=KFL2
+ MINT(21)=KFL3
+ MINT(22)=KFL4
+
+C...Set flavours and mothers of scattering partons.
+ K(N+1,1)=14
+ K(N+2,1)=14
+ K(N+3,1)=3
+ K(N+4,1)=3
+ K(N+1,2)=KFL1
+ K(N+2,2)=KFL2
+ K(N+3,2)=KFL3
+ K(N+4,2)=KFL4
+ K(N+1,3)=MINT(83)+1
+ K(N+2,3)=MINT(83)+2
+ K(N+3,3)=N+1
+ K(N+4,3)=N+2
+
+C...Store colour connection indices.
+ DO 320 J=1,2
+ JC=J
+ IF(KCS.EQ.-1) JC=3-J
+ IF(ICOL(KCC,1,JC).NE.0) K(N+1,J+3)=N+ICOL(KCC,1,JC)
+ IF(ICOL(KCC,2,JC).NE.0) K(N+2,J+3)=N+ICOL(KCC,2,JC)
+ IF(ICOL(KCC,3,JC).NE.0) K(N+3,J+3)=MSTU(5)*(N+ICOL(KCC,3,JC))
+ IF(ICOL(KCC,4,JC).NE.0) K(N+4,J+3)=MSTU(5)*(N+ICOL(KCC,4,JC))
+ 320 CONTINUE
+
+C...Store incoming and outgoing partons in their CM-frame.
+ SHR=SQRT(TAU)*VINT(1)
+ P(N+1,3)=0.5D0*SHR
+ P(N+1,4)=0.5D0*SHR
+ P(N+2,3)=-0.5D0*SHR
+ P(N+2,4)=0.5D0*SHR
+ P(N+3,5)=PYMASS(K(N+3,2))
+ P(N+4,5)=PYMASS(K(N+4,2))
+ IF(P(N+3,5)+P(N+4,5).GE.SHR) GOTO 240
+ P(N+3,4)=0.5D0*(SHR+(P(N+3,5)**2-P(N+4,5)**2)/SHR)
+ P(N+3,3)=SQRT(MAX(0D0,P(N+3,4)**2-P(N+3,5)**2))
+ P(N+4,4)=SHR-P(N+3,4)
+ P(N+4,3)=-P(N+3,3)
+
+C...Rotate outgoing partons using cos(theta)=(th-uh)/lam(sh,sqm3,sqm4)
+ PHI=PARU(2)*PYR(0)
+ CALL PYROBO(N+3,N+4,ACOS(VINT(23)),PHI,0D0,0D0,0D0)
+
+C...Set up default values before showers.
+ MINT(31)=MINT(31)+1
+ IPU1=N+1
+ IPU2=N+2
+ IPU3=N+3
+ IPU4=N+4
+ VINT(141)=VINT(41)
+ VINT(142)=VINT(42)
+ N=N+4
+
+C...Showering of initial state partons (optional).
+C...Note: no showering of final state partons here; it comes later.
+ IF(MSTP(84).GE.1.AND.MSTP(61).GE.1) THEN
+ MINT(51)=0
+ ALAMSV=PARJ(81)
+ PARJ(81)=PARP(72)
+ NSAV=N
+ DO 340 I=1,4
+ DO 330 J=1,5
+ KSAV(I,J)=K(N-4+I,J)
+ PSAV(I,J)=P(N-4+I,J)
+ 330 CONTINUE
+ 340 CONTINUE
+ CALL PYSSPA(IPU1,IPU2)
+ PARJ(81)=ALAMSV
+C...If shower failed then restore to situation before shower.
+ IF(MINT(51).GE.1) THEN
+ N=NSAV
+ DO 360 I=1,4
+ DO 350 J=1,5
+ K(N-4+I,J)=KSAV(I,J)
+ P(N-4+I,J)=PSAV(I,J)
+ 350 CONTINUE
+ 360 CONTINUE
+ IPU1=N-3
+ IPU2=N-2
+ VINT(141)=VINT(41)
+ VINT(142)=VINT(42)
+ ENDIF
+ ENDIF
+
+C...Keep track of loose colour ends and information on scattering.
+ 370 IMI(1,MINT(31),1)=IPU1
+ IMI(2,MINT(31),1)=IPU2
+ IMI(1,MINT(31),2)=0
+ IMI(2,MINT(31),2)=0
+ XMI(1,MINT(31))=VINT(141)
+ XMI(2,MINT(31))=VINT(142)
+ PT2MI(MINT(31))=VINT(54)
+ IMISEP(MINT(31))=N
+
+C...Decide whether quarks in last scattering were valence, companion or
+C...sea.
+ DO 430 JS=1,2
+ KFBEAM=MINT(10+JS)
+ KFSBM=ISIGN(1,MINT(10+JS))
+ IFL=K(IMI(JS,MINT(31),1),2)
+ IMI(JS,MINT(31),2)=0
+ IF (IABS(IFL).GT.6) GOTO 430
+
+C...Get PDFs at X and Q2 of the parton shower initiator for the
+C...last scattering. At this point VINT(143:144) do not yet
+C...include the scattered x values VINT(141:142).
+ X=VINT(140+JS)/VINT(142+JS)
+ IF(MSTP(84).GE.1.AND.MSTP(61).GE.1) THEN
+ Q2=PARP(62)**2
+ ELSE
+ Q2=VINT(54)
+ ENDIF
+C...Note: XPSVC = x*pdf.
+ MINT(30)=JS
+ CALL PYPDFU(KFBEAM,X,Q2,XPQ)
+ SEA=XPSVC(IFL,-1)
+ VAL=XPSVC(IFL,0)
+ CMP=0D0
+ DO 380 IVC=1,NVC(JS,IFL)
+ CMP=CMP+XPSVC(IFL,IVC)
+ 380 CONTINUE
+
+C...Decide (Extra factor x cancels in the dvision).
+ RVCS=PYR(0)*(SEA+VAL+CMP)
+ IVNOW=1
+ 390 IF (RVCS.LE.VAL.AND.IVNOW.GE.1) THEN
+C...Safety check that valence present; pi0/gamma/K0S/K0L special cases.
+ IVNOW=0
+ IF(KFIVAL(JS,1).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,2).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,3).EQ.IFL) IVNOW=IVNOW+1
+ IF(KFIVAL(JS,1).EQ.0) THEN
+ IF(KFBEAM.EQ.111.AND.IABS(IFL).LE.2) IVNOW=1
+ IF(KFBEAM.EQ.22.AND.IABS(IFL).LE.5) IVNOW=1
+ IF((KFBEAM.EQ.130.OR.KFBEAM.EQ.310).AND.
+ & (IABS(IFL).EQ.1.OR.IABS(IFL).EQ.3)) IVNOW=1
+ ELSE
+ DO 400 I1=1,NMI(JS)
+ IF (K(IMI(JS,I1,1),2).EQ.IFL.AND.IMI(JS,I1,2).EQ.0)
+ & IVNOW=IVNOW-1
+ 400 CONTINUE
+ ENDIF
+ IF(IVNOW.EQ.0) GOTO 390
+C...Mark valence.
+ IMI(JS,MINT(31),2)=0
+C...Sets valence content of gamma, pi0, K0S, K0L if not done.
+ IF(KFIVAL(JS,1).EQ.0) THEN
+ IF(KFBEAM.EQ.111.OR.KFBEAM.EQ.22) THEN
+ KFIVAL(JS,1)=IFL
+ KFIVAL(JS,2)=-IFL
+ ELSEIF(KFBEAM.EQ.130.OR.KFBEAM.EQ.310) THEN
+ KFIVAL(JS,1)=IFL
+ IF(IABS(IFL).EQ.1) KFIVAL(JS,2)=ISIGN(3,-IFL)
+ IF(IABS(IFL).NE.1) KFIVAL(JS,2)=ISIGN(1,-IFL)
+ ENDIF
+ ENDIF
+
+ ELSEIF (RVCS.LE.VAL+SEA.OR.NVC(JS,IFL).EQ.0) THEN
+C...If sea, add opposite sign companion parton. Store X and I.
+ NVC(JS,-IFL)=NVC(JS,-IFL)+1
+ XASSOC(JS,-IFL,NVC(JS,-IFL))=X
+C...Set pointer to companion
+ IMI(JS,MINT(31),2)=-NVC(JS,-IFL)
+ ELSE
+C...If companion, decide which one.
+ CMPSUM=VAL+SEA
+ ISEL=0
+ 410 ISEL=ISEL+1
+ CMPSUM=CMPSUM+XPSVC(IFL,ISEL)
+ IF (RVCS.GT.CMPSUM.AND.ISEL.LT.NVC(JS,IFL)) GOTO 410
+C...Find original sea (anti-)quark:
+ IASSOC=0
+ DO 420 I1=1,NMI(JS)
+ IF (K(IMI(JS,I1,1),2).NE.-IFL) GOTO 420
+ IF (-IMI(JS,I1,2).EQ.ISEL) THEN
+ IMI(JS,MINT(31),2)=IMI(JS,I1,1)
+ IMI(JS,I1,2)=IMI(JS,MINT(31),1)
+ ENDIF
+ 420 CONTINUE
+C...Change X to what associated companion had, so that the correct
+C...amount of momentum can be subtracted from the companion sum below.
+ X=XASSOC(JS,IFL,ISEL)
+C...Mark companion read.
+ XASSOC(JS,IFL,ISEL)=0D0
+ ENDIF
+ 430 CONTINUE
+
+C...Global statistics.
+ MINT(351)=MINT(351)+1
+ VINT(351)=VINT(351)+PT
+ IF (MINT(351).EQ.1) VINT(356)=PT
+
+C...Update remaining energy and other counters.
+ IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYMIGN:) no more memory left in PYJETS')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ NMI(1)=NMI(1)+1
+ NMI(2)=NMI(2)+1
+ VINT(151)=VINT(151)+VINT(41)
+ VINT(152)=VINT(152)+VINT(42)
+ VINT(143)=VINT(143)-VINT(141)
+ VINT(144)=VINT(144)-VINT(142)
+
+C...Iterate, with more interactions allowed.
+ IF(MINT(31).LT.240) GOTO 240
+ 440 CONTINUE
+
+C...Restore saved quantities for hardest interaction.
+ MINT(1)=ISUBSV
+ MINT(13)=M13SV
+ MINT(14)=M14SV
+ MINT(15)=M15SV
+ MINT(16)=M16SV
+ MINT(21)=M21SV
+ MINT(22)=M22SV
+ DO 450 J=11,80
+ VINT(J)=VINTSV(J)
+ 450 CONTINUE
+ VINT(141)=V141SV
+ VINT(142)=V142SV
+
+ ENDIF
+
+C...Format statements for printout.
+ 5000 FORMAT(/1X,'****** PYMIGN: initialization of multiple inter',
+ &'actions for MSTP(82) =',I2,' ******')
+ 5100 FORMAT(8X,'pT0 =',F5.2,' GeV gives sigma(parton-parton) =',1P,
+ &D9.2,' mb: rejected')
+ 5200 FORMAT(8X,'pT0 =',F5.2,' GeV gives sigma(parton-parton) =',1P,
+ &D9.2,' mb: accepted')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMIHK
+C...Finds left-behind remnant flavour content and hooks up
+C...the colour flow between the hard scattering and remnants
+
+ SUBROUTINE PYMIHK
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...The event record
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+C...Parameters
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+C...The common block of dangling ends
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,/PYINTM/
+C...Local variables
+ PARAMETER (NERSIZ=4000)
+ COMMON /PYCBLS/MCO(NERSIZ,2),NCC,JCCO(NERSIZ,2),JCCN(NERSIZ,2)
+ & ,MACCPT
+ COMMON /PYCTAG/NCT,MCT(NERSIZ,2)
+ SAVE /PYCBLS/,/PYCTAG/
+ DIMENSION JST(2,3),IV(2,3),IDQ(3),NVSUM(2),NBRTOT(2),NG(2)
+ & ,ITJUNC(2),MOUT(2),INSR(1000,3),ISTR(6),YMI(240)
+ DATA NERRPR/0/
+ SAVE NERRPR
+ FOUR(I,J)=P(I,4)*P(J,4)-P(I,3)*P(J,3)-P(I,2)*P(J,2)-P(I,1)*P(J,1)
+
+C...Set up error checkers
+ IBOOST=0
+
+C...Initialize colour arrays: MCO (Original) and MCT (New)
+ DO 110 I=MINT(84)+1,NERSIZ
+ DO 100 JC=1,2
+ MCT(I,JC)=0
+ MCO(I,JC)=0
+ 100 CONTINUE
+C...Also zero colour tracing information, if existed.
+ IF (I.LE.N) THEN
+ K(I,4)=MOD(K(I,4),MSTU(5)**2)
+ K(I,5)=MOD(K(I,5),MSTU(5)**2)
+ ENDIF
+ 110 CONTINUE
+
+C...Initialize colour tag collapse arrays:
+C...JCCO (Original) and JCCN (New).
+ DO 130 MG=MINT(84)+1,NERSIZ
+ DO 120 JC=1,2
+ JCCO(MG,JC)=0
+ JCCN(MG,JC)=0
+ 120 CONTINUE
+ 130 CONTINUE
+
+C...Zero gluon insertion array
+ DO 150 IM=1,1000
+ DO 140 J=1,3
+ INSR(IM,J)=0
+ 140 CONTINUE
+ 150 CONTINUE
+
+C...Compute hard scattering system rapidities
+ IF (MSTP(89).EQ.1) THEN
+ DO 160 IM=1,240
+ IF (IM.LE.MINT(31)) THEN
+ YMI(IM)=LOG(XMI(1,IM)/XMI(2,IM))
+ ELSE
+C...Set (unsigned) rapidity = 100 for beam remnant systems.
+ YMI(IM)=100D0
+ ENDIF
+ 160 CONTINUE
+ ENDIF
+
+C...Treat each side separately
+ DO 290 JS=1,2
+
+C...Initialize side.
+ NG(JS)=0
+ JV=0
+ KFS=ISIGN(1,MINT(10+JS))
+
+C...Set valence content of pi0, gamma, K0S, K0L if not yet done.
+ IF(KFIVAL(JS,1).EQ.0) THEN
+ IF(MINT(10+JS).EQ.111) THEN
+ KFIVAL(JS,1)=INT(1.5D0+PYR(0))
+ KFIVAL(JS,2)=-KFIVAL(JS,1)
+ ELSEIF(MINT(10+JS).EQ.22) THEN
+ PYRKF=PYR(0)
+ KFIVAL(JS,1)=1
+ IF(PYRKF.GT.0.1D0) KFIVAL(JS,1)=2
+ IF(PYRKF.GT.0.5D0) KFIVAL(JS,1)=3
+ IF(PYRKF.GT.0.6D0) KFIVAL(JS,1)=4
+ KFIVAL(JS,2)=-KFIVAL(JS,1)
+ ELSEIF(MINT(10+JS).EQ.130.OR.MINT(10+JS).EQ.310) THEN
+ IF(PYR(0).GT.0.5D0) THEN
+ KFIVAL(JS,1)=1
+ KFIVAL(JS,2)=-3
+ ELSE
+ KFIVAL(JS,1)=3
+ KFIVAL(JS,2)=-1
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...Initialize beam remnant sea and valence content flavour by flavour.
+ NVSUM(JS)=0
+ NBRTOT(JS)=0
+ DO 210 JFA=1,6
+C...Count up original number of JFA valence quarks and antiquarks.
+ NVALQ=0
+ NVALQB=0
+ NSEA=0
+ DO 170 J=1,3
+ IF(KFIVAL(JS,J).EQ.JFA) NVALQ=NVALQ+1
+ IF(KFIVAL(JS,J).EQ.-JFA) NVALQB=NVALQB+1
+ 170 CONTINUE
+ NVSUM(JS)=NVSUM(JS)+NVALQ+NVALQB
+C...Subtract kicked out valence and determine sea from flavour cons.
+ DO 180 IM=1,NMI(JS)
+ IFL = K(IMI(JS,IM,1),2)
+ IFA = IABS(IFL)
+ IFS = ISIGN(1,IFL)
+ IF (IFL.EQ.JFA.AND.IMI(JS,IM,2).EQ.0) THEN
+C...Subtract K.O. valence quark from remainder.
+ NVALQ=NVALQ-1
+ JV=NVSUM(JS)-NVALQ-NVALQB
+ IV(JS,JV)=IMI(JS,IM,1)
+ ELSEIF (IFL.EQ.-JFA.AND.IMI(JS,IM,2).EQ.0) THEN
+C...Subtract K.O. valence antiquark from remainder.
+ NVALQB=NVALQB-1
+ JV=NVSUM(JS)-NVALQ-NVALQB
+ IV(JS,JV)=IMI(JS,IM,1)
+ ELSEIF (IFA.EQ.JFA) THEN
+C...Outside sea without companion: add opposite sea flavour inside.
+ IF (IMI(JS,IM,2).LT.0) NSEA=NSEA-IFS
+ ENDIF
+ 180 CONTINUE
+C...Check if space left in PYJETS for additional BR flavours
+ NFLSUM=IABS(NSEA)+NVALQ+NVALQB
+ NBRTOT(JS)=NBRTOT(JS)+NFLSUM
+ IF (N+NFLSUM+1.GT.MSTU(4)) THEN
+ CALL PYERRM(11,'(PYMIHK:) no more memory left in PYJETS')
+ MINT(51)=1
+ RETURN
+ ENDIF
+C...Add required val+sea content to beam remnant.
+ IF (NFLSUM.GT.0) THEN
+ DO 200 IA=1,NFLSUM
+C...Insert beam remnant quark as p.t. symbolic parton in ER.
+ N=N+1
+ DO 190 IX=1,5
+ K(N,IX)=0
+ P(N,IX)=0D0
+ V(N,IX)=0D0
+ 190 CONTINUE
+ K(N,1)=3
+ K(N,2)=ISIGN(JFA,NSEA)
+ IF (IA.LE.NVALQ) K(N,2)=JFA
+ IF (IA.GT.NVALQ.AND.IA.LE.NVALQ+NVALQB) K(N,2)=-JFA
+ K(N,3)=MINT(83)+JS
+C...Also update NMI, IMI, and IV arrays.
+ NMI(JS)=NMI(JS)+1
+ IMI(JS,NMI(JS),1)=N
+ IMI(JS,NMI(JS),2)=-1
+ IF (IA.LE.NVALQ+NVALQB) THEN
+ IMI(JS,NMI(JS),2)=0
+ JV=JV+1
+ IV(JS,JV)=IMI(JS,NMI(JS),1)
+ ENDIF
+ 200 CONTINUE
+ ENDIF
+ 210 CONTINUE
+
+ IM=0
+ 220 IM=IM+1
+ IF (IM.LE.NMI(JS)) THEN
+ IF (K(IMI(JS,IM,1),2).EQ.21) THEN
+ NG(JS)=NG(JS)+1
+C...Add fictitious parent gluons for companion pairs.
+ ELSEIF (IMI(JS,IM,2).NE.0.AND.K(IMI(JS,IM,1),2).GT.0) THEN
+C...Randomly assign companions to sea quarks which have none.
+ IF (IMI(JS,IM,2).LT.0) THEN
+ IMC=PYR(0)*NMI(JS)
+ 230 IMC=MOD(IMC,NMI(JS))+1
+ IF (K(IMI(JS,IMC,1),2).NE.-K(IMI(JS,IM,1),2)) GOTO 230
+ IF (IMI(JS,IMC,2).GE.0) GOTO 230
+ IMI(JS, IM,2) = IMI(JS,IMC,1)
+ IMI(JS,IMC,2) = IMI(JS, IM,1)
+ ENDIF
+C...Add fictitious parent gluon
+ N=N+1
+ DO 240 IX=1,5
+ K(N,IX)=0
+ P(N,IX)=0D0
+ V(N,IX)=0D0
+ 240 CONTINUE
+ K(N,1)=14
+ K(N,2)=21
+ K(N,3)=MINT(83)+JS
+C...Set gluon (anti-)colour daughter pointers
+ K(N,4)=IMI(JS, IM,1)
+ K(N,5)=IMI(JS, IM,2)
+C...Set quark (anti-)colour parent pointers
+ K(IMI(JS, IM,2),5)=K(IMI(JS, IM,2),5)+MSTU(5)*N
+ K(IMI(JS, IM,1),4)=K(IMI(JS, IM,1),4)+MSTU(5)*N
+C...Add gluon to IMI
+ NMI(JS)=NMI(JS)+1
+ IMI(JS,NMI(JS),1)=N
+ IMI(JS,NMI(JS),2)=0
+ ENDIF
+ GOTO 220
+ ENDIF
+
+C...If incoming (anti-)baryon, insert inside (anti-)junction.
+C...Set up initial v-v-j-v configuration. Otherwise set up
+C...mesonic v-vbar configuration
+ IF (IABS(MINT(10+JS)).GT.1000) THEN
+C...Determine junction type (1: B=1 2: B=-1)
+ ITJUNC(JS) = (3-KFS)/2
+C...Insert junction.
+ N=N+1
+ DO 250 IX=1,5
+ K(N,IX)=0
+ P(N,IX)=0D0
+ V(N,IX)=0D0
+ 250 CONTINUE
+C...Set special junction codes:
+ K(N,1)=42
+ K(N,2)=88
+C...Set parent to side.
+ K(N,3)=MINT(83)+JS
+ K(N,4)=ITJUNC(JS)*MSTU(5)
+ K(N,5)=0
+C...Connect valence quarks to junction.
+ MOUT(JS)=0
+ MANTI=ITJUNC(JS)-1
+C...Set (anti)colour mother = junction.
+ DO 260 JV=1,3
+ K(IV(JS,JV),4+MANTI)=MOD(K(IV(JS,JV),4+MANTI),MSTU(5))
+ & +MSTU(5)*N
+C...Keep track of partons adjacent to junction:
+ JST(JS,JV)=IV(JS,JV)
+ 260 CONTINUE
+ ELSE
+C...Mesons: set up initial q-qbar topology
+ ITJUNC(JS)=0
+ IF (K(IV(JS,1),2).GT.0) THEN
+ IQ=IV(JS,1)
+ IQBAR=IV(JS,2)
+ ELSE
+ IQ=IV(JS,2)
+ IQBAR=IV(JS,1)
+ ENDIF
+ IV(JS,3)=0
+ JST(JS,1)=IQ
+ JST(JS,2)=IQBAR
+ JST(JS,3)=0
+ K(IQ,4)=MOD(K(IQ,4),MSTU(5))+MSTU(5)*IQBAR
+ K(IQBAR,5)=MOD(K(IQBAR,5),MSTU(5))+MSTU(5)*IQ
+C...Special for mesons. Insert gluon if BR empty.
+ IF (NBRTOT(JS).EQ.0) THEN
+ N=N+1
+ DO 270 IX=1,5
+ K(N,IX)=0
+ P(N,IX)=0D0
+ V(N,IX)=0D0
+ 270 CONTINUE
+ K(N,1)=3
+ K(N,2)=21
+ K(N,3)=MINT(83)+JS
+ K(N,4)=0
+ K(N,5)=0
+ NBRTOT(JS)=1
+ NG(JS)=NG(JS)+1
+C...Add gluon to IMI
+ NMI(JS)=NMI(JS)+1
+ IMI(JS,NMI(JS),1)=N
+ IMI(JS,NMI(JS),2)=0
+ ENDIF
+ MOUT(JS)=0
+ ENDIF
+
+C...Count up number of valence quarks outside BR.
+ DO 280 JV=1,3
+ IF (JST(JS,JV).LE.MINT(53).AND.JST(JS,JV).GT.0)
+ & MOUT(JS)=MOUT(JS)+1
+ 280 CONTINUE
+
+ 290 CONTINUE
+
+C...Now both sides have been prepared in an initial vvjv (baryonic) or
+C...v(g)vbar (mesonic) configuration.
+
+C...Create colour line tags starting from initiators.
+ NCT=0
+ DO 320 IM=1,MINT(31)
+C...Consider each side in turn.
+ DO 310 JS=1,2
+ I1=IMI(JS,IM,1)
+ I2=IMI(3-JS,IM,1)
+ DO 300 JCS=4,5
+ IF (K(I1,2).NE.21.AND.(9-2*JCS).NE.ISIGN(1,K(I1,2)))
+ & GOTO 300
+ IF (K(I1,JCS)/MSTU(5)**2.NE.0) GOTO 300
+
+ KCS=JCS
+ CALL PYCTTR(I1,KCS,I2)
+ IF(MINT(51).NE.0) RETURN
+
+ 300 CONTINUE
+ 310 CONTINUE
+ 320 CONTINUE
+
+ DO 340 JS=1,2
+C...Create colour tags for beam remnant partons.
+ DO 330 IM=MINT(31)+1,NMI(JS)
+ IP=IMI(JS,IM,1)
+ IF (K(IP,2).NE.21) THEN
+ JC=(3-ISIGN(1,K(IP,2)))/2
+ IF (MCT(IP,JC).EQ.0) THEN
+ NCT=NCT+1
+ MCT(IP,JC)=NCT
+ ENDIF
+ ELSE
+C...Gluons
+ ICD=K(IP,4)
+ IAD=K(IP,5)
+ IF (ICD.NE.0) THEN
+C...Fictituous gluons just inherit from their quark daughters.
+ ICC=MCT(ICD,1)
+ IAC=MCT(IAD,2)
+ ELSE
+C...Real beam remnant gluons get their own colours
+ ICC=NCT+1
+ IAC=NCT+2
+ NCT=NCT+2
+ ENDIF
+ MCT(IP,1)=ICC
+ MCT(IP,2)=IAC
+ ENDIF
+ 330 CONTINUE
+ 340 CONTINUE
+
+C...Create colour tags for colour lines which are detached from the
+C...initial state.
+
+ DO 360 MQGST=1,2
+ DO 350 I=MINT(84)+1,N
+
+C...Look for coloured string endpoint, or (later) leftover gluon.
+ IF (K(I,1).NE.3) GOTO 350
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 350
+ KQ=KCHG(KC,2)
+ IF(KQ.EQ.0.OR.(MQGST.EQ.1.AND.KQ.EQ.2)) GOTO 350
+
+C...Pick up loose string end with no previous tag.
+ KCS=4
+ IF(KQ*ISIGN(1,K(I,2)).LT.0) KCS=5
+ IF(MCT(I,KCS-3).NE.0) GOTO 350
+
+ CALL PYCTTR(I,KCS,I)
+ IF(MINT(51).NE.0) RETURN
+
+ 350 CONTINUE
+ 360 CONTINUE
+
+C...Store original colour tags
+ DO 370 I=MINT(84)+1,N
+ MCO(I,1)=MCT(I,1)
+ MCO(I,2)=MCT(I,2)
+ 370 CONTINUE
+
+C...Iteratively add gluons to already existing string pieces, enforcing
+C...various possible orderings, and rejecting insertions that would give
+C...rise to singlet gluons.
+C...<kappa tau> normalization.
+ RM0=1.5D0
+ MRETRY=0
+ PARP80=PARP(80)
+
+C...Set up simplified kinematics.
+C...Boost hard interaction systems.
+ IBOOST=IBOOST+1
+ DO 380 IM=1,MINT(31)
+ BETA=(XMI(1,IM)-XMI(2,IM))/(XMI(1,IM)+XMI(2,IM))
+ CALL PYROBO(IMISEP(IM-1)+1,IMISEP(IM),0D0,0D0,0D0,0D0,BETA)
+ 380 CONTINUE
+C...Assign preliminary beam remnant momenta.
+ DO 390 I=MINT(53)+1,N
+ JS=K(I,3)
+ P(I,1)=0D0
+ P(I,2)=0D0
+ IF (K(I,2).NE.88) THEN
+ P(I,4)=0.5D0*VINT(142+JS)*VINT(1)/MAX(1,NMI(JS)-MINT(31))
+ P(I,3)=P(I,4)
+ IF (JS.EQ.2) P(I,3)=-P(I,3)
+ ELSE
+C...Junctions are wildcards for the present.
+ P(I,4)=0D0
+ P(I,3)=0D0
+ ENDIF
+ 390 CONTINUE
+
+C...Reset colour processing information.
+ 400 DO 410 I=MINT(84)+1,N
+ K(I,4)=MOD(K(I,4),MSTU(5)**2)
+ K(I,5)=MOD(K(I,5),MSTU(5)**2)
+ 410 CONTINUE
+
+ NCC=0
+ DO 430 JS=1,2
+C...If meson, without gluon in BR, collapse q-qbar colour tags:
+ IF (ITJUNC(JS).EQ.0) THEN
+ JC1=MCT(JST(JS,1),1)
+ JC2=MCT(JST(JS,2),2)
+ NCC=NCC+1
+ JCCO(NCC,1)=MAX(JC1,JC2)
+ JCCO(NCC,2)=MIN(JC1,JC2)
+C...Collapse colour tags in event record
+ DO 420 I=MINT(84)+1,N
+ IF (MCT(I,1).EQ.JCCO(NCC,1)) MCT(I,1)=JCCO(NCC,2)
+ IF (MCT(I,2).EQ.JCCO(NCC,1)) MCT(I,2)=JCCO(NCC,2)
+ 420 CONTINUE
+ ENDIF
+ 430 CONTINUE
+
+ 440 JS=1
+ IF (PYR(0).GT.0.5D0.OR.NG(1).EQ.0) JS=2
+ IF (NG(JS).GT.0) THEN
+ NOPT=0
+ RLOPT=1D9
+C...Start at random gluon (optimizes speed for random attachments)
+ NMGL=0
+ IMGL=PYR(0)*NMI(JS)+1
+ 450 IMGL=MOD(IMGL,NMI(JS))+1
+ NMGL=NMGL+1
+C...Only loop through NMI once (with upper limit to save time)
+ IF (NMGL.LE.NMI(JS).AND.NOPT.LE.3) THEN
+ IGL = IMI(JS,IMGL,1)
+C...If not gluon or if already connected, try next.
+ IF (K(IGL,2).NE.21.OR.K(IGL,4)/MSTU(5).NE.0
+ & .OR.K(IGL,5)/MSTU(5).NE.0) GOTO 450
+C...Now loop through all possible insertions of this gluon.
+ NMP1=0
+ IMP1=PYR(0)*NMI(JS)+1
+ 460 IMP1=MOD(IMP1,NMI(JS))+1
+ NMP1=NMP1+1
+ IF (IMP1.EQ.IMGL) GOTO 460
+C...Only loop through NMI once (with upper limit to save time).
+ IF (NMP1.LE.NMI(JS).AND.NOPT.LE.3) THEN
+ IP1 = IMI(JS,IMP1,1)
+C...Try both colour mother and colour anti-mother.
+C...Randomly select which one to try first.
+ NANTI=0
+ MANTI=PYR(0)*2
+ 470 MANTI=MOD(MANTI+1,2)
+ NANTI=NANTI+1
+ IF (NANTI.LE.2) THEN
+ IP2 =MOD(K(IP1,4+MANTI)/MSTU(5),MSTU(5))
+C...Reject if no appropriate mother (or if mother is fictitious
+C...parent gluon.)
+ IF (IP2.LE.0) GOTO 470
+ IF (K(IP2,2).EQ.21.AND.IP2.GT.MINT(53)) GOTO 470
+C...Also reject if this link has already been tried.
+ IF (K(IP1,4+MANTI)/MSTU(5)**2.EQ.2) GOTO 470
+ IF (K(IP2,5-MANTI)/MSTU(5)**2.EQ.2) GOTO 470
+C...Set flag to indicate that this link has now been tried for this
+C...gluon. IP2 may be junction, which has several mothers.
+ K(IP1,4+MANTI)=K(IP1,4+MANTI)+2*MSTU(5)**2
+ IF (K(IP2,2).NE.88) THEN
+ K(IP2,5-MANTI)=K(IP2,5-MANTI)+2*MSTU(5)**2
+ ENDIF
+
+C...JCG1: Original colour tag of gluon on IP1 side
+C...JCG2: Original colour tag of gluon on IP2 side
+C...JCP1: Original colour tag of IP1 on gluon side
+C...JCP2: Original colour tag of IP2 on gluon side.
+ JCG1=MCO(IGL,2-MANTI)
+ JCG2=MCO(IGL,1+MANTI)
+ JCP1=MCO(IP1,1+MANTI)
+ JCP2=MCO(IP2,2-MANTI)
+
+ CALL PYMIHG(JCP1,JCG1,JCP2,JCG2)
+C...Reject gluon attachments that give rise to singlet gluons.
+ IF (MACCPT.EQ.0) GOTO 470
+
+C...Update colours
+ JCG1=MCT(IGL,2-MANTI)
+ JCG2=MCT(IGL,1+MANTI)
+ JCP1=MCT(IP1,1+MANTI)
+ JCP2=MCT(IP2,2-MANTI)
+
+C...Select whether to accept this insertion
+ IF (MSTP(89).EQ.0) THEN
+C...Random insertions: no measure.
+ RL=1D0
+C...For random ordering, we want to suppress beam remnant breakups
+C...already at this point.
+ IF (IP1.GT.MINT(53).AND.IP2.GT.MINT(53)
+ & .AND.MOUT(JS).NE.0.AND.PYR(0).GT.PARP80) THEN
+ NMP1=0
+ NMGL=0
+ GOTO 470
+ ENDIF
+ ELSEIF (MSTP(89).EQ.1) THEN
+C...Rapidity ordering:
+C...YGL = Rapidity of gluon.
+ YGL=YMI(IMGL)
+C...If fictitious gluon
+ IF (YGL.EQ.100D0) THEN
+ YGL=(3-2*JS)*100D0
+ IDA1=MOD(K(IGL,4),MSTU(5))
+ IDA2=MOD(K(IGL,5),MSTU(5))
+ DO 480 IMT=1,NMI(JS)
+C...Select (arbitrarily) the most central daughter.
+ IF (IMI(JS,IMT,1).EQ.IDA1.OR.IMI(JS,IMT,1).EQ.IDA2)
+ & THEN
+ IF (ABS(YGL).GT.ABS(YMI(IMT))) YGL=YMI(IMT)
+ ENDIF
+ 480 CONTINUE
+ ENDIF
+C...YP1 = Rapidity IP1
+ YP1=YMI(IMP1)
+C...If fictitious gluon
+ IF (YP1.EQ.100D0) THEN
+ YP1=(3-2*JS)*YP1
+ IDA1=MOD(K(IP1,4),MSTU(5))
+ IDA2=MOD(K(IP1,5),MSTU(5))
+ DO 490 IMT=1,NMI(JS)
+C...Select (arbitrarily) the most central daughter.
+ IF (IMI(JS,IMT,1).EQ.IDA1.OR.IMI(JS,IMT,1).EQ.IDA2)
+ & THEN
+ IF (ABS(YP1).GT.ABS(YMI(IMT))) YP1=YMI(IMT)
+ ENDIF
+ 490 CONTINUE
+ ENDIF
+C...YP2 = Rapidity of mother system
+ IF (K(IP2,2).NE.88) THEN
+ DO 500 IMT=1,NMI(JS)
+ IF (IMI(JS,IMT,1).EQ.IP2) YP2=YMI(IMT)
+ 500 CONTINUE
+C...If fictitious gluon
+ IF (YP2.EQ.100D0) THEN
+ YP2=(3-2*JS)*YP2
+ IDA1=MOD(K(IP2,4),MSTU(5))
+ IDA2=MOD(K(IP2,5),MSTU(5))
+ DO 510 IMT=1,NMI(JS)
+C...Select (arbitrarily) the most central daughter.
+ IF (IMI(JS,IMT,1).EQ.IDA1.OR.IMI(JS,IMT,1).EQ.IDA2
+ & ) THEN
+ IF (ABS(YP2).GT.ABS(YMI(IMT))) YP2=YMI(IMT)
+ ENDIF
+ 510 CONTINUE
+ ENDIF
+C...Assign (arbitrarily) 100D0 to junction also
+ ELSE
+ YP2=(3-2*JS)*100D0
+ ENDIF
+ RL=ABS(YGL-YP1)+ABS(YGL-YP2)
+ ELSEIF (MSTP(89).EQ.2) THEN
+C...Lambda ordering:
+C...Compute lambda measure for this insertion.
+ RL=1D0
+ DO 520 IST=1,6
+ ISTR(IST)=0
+ 520 CONTINUE
+C...If IP2 is junction, not caught below.
+ IF (JCP2.EQ.0) THEN
+ ITJU=MOD(K(IP2,4)/MSTU(5),MSTU(5))
+C...Anti-junction is colour endpoint et vv., always on JCG2.
+ ISTR(5-ITJU)=IP2
+ ENDIF
+ DO 530 I=MINT(84)+1,N
+ IF (K(I,1).LT.10) THEN
+C...The new string pieces
+ IF (MCT(I,1).EQ.JCG1) ISTR(1)=I
+ IF (MCT(I,2).EQ.JCG1) ISTR(2)=I
+ IF (MCT(I,1).EQ.JCG2) ISTR(3)=I
+ IF (MCT(I,2).EQ.JCG2) ISTR(4)=I
+ ENDIF
+ 530 CONTINUE
+C...Also identify junctions as string endpoints.
+ DO 540 I=MINT(84)+1,N
+ ICMO=MOD(K(I,4)/MSTU(5),MSTU(5))
+ IAMO=MOD(K(I,5)/MSTU(5),MSTU(5))
+C...Find partons adjacent to junctions.
+ IF (K(ICMO,1).EQ.42.AND.MCT(I,1).EQ.JCG1.AND.ISTR(2)
+ & .EQ.0) ISTR(2) = ICMO
+ IF (K(IAMO,1).EQ.42.AND.MCT(I,2).EQ.JCG1.AND.ISTR(1)
+ & .EQ.0) ISTR(1) = IAMO
+ IF (K(ICMO,1).EQ.42.AND.MCT(I,1).EQ.JCG2.AND.ISTR(4)
+ & .EQ.0) ISTR(4) = ICMO
+ IF (K(IAMO,1).EQ.42.AND.MCT(I,2).EQ.JCG2.AND.ISTR(3)
+ & .EQ.0) ISTR(3) = IAMO
+ 540 CONTINUE
+C...The old string piece
+ ISTR(5)=ISTR(1+2*MANTI)
+ ISTR(6)=ISTR(4-2*MANTI)
+ RL=MAX(1D0,FOUR(ISTR(1),ISTR(2)))*MAX(1D0,FOUR(ISTR(3)
+ & ,ISTR(4)))/MAX(1D0,FOUR(ISTR(5),ISTR(6)))
+ RL=LOG(RL)
+ ENDIF
+C...Allow some breadth to speed things up.
+ IF (ABS(1D0-RL/RLOPT).LT.0.05D0) THEN
+ NOPT=NOPT+1
+ ELSEIF (RL.GT.RLOPT) THEN
+ GOTO 470
+ ELSE
+ NOPT=1
+ RLOPT=RL
+ ENDIF
+C...INSR(NOPT,1)=Gluon colour mother
+C...INSR(NOPT,2)=Gluon
+C...INSR(NOPT,3)=Gluon anticolour mother
+ IF (NOPT.GT.1000) GOTO 470
+ INSR(NOPT,1+2*MANTI)=IP2
+ INSR(NOPT,2)=IGL
+ INSR(NOPT,3-2*MANTI)=IP1
+ IF (MSTP(89).GT.0.OR.NOPT.EQ.0) GOTO 470
+ ENDIF
+ IF (MSTP(89).GT.0.OR.NOPT.EQ.0) GOTO 460
+ ENDIF
+C...Reset link test information.
+ DO 550 I=MINT(84)+1,N
+ K(I,4)=MOD(K(I,4),MSTU(5)**2)
+ K(I,5)=MOD(K(I,5),MSTU(5)**2)
+ 550 CONTINUE
+ IF (MSTP(89).GT.0.OR.NOPT.EQ.0) GOTO 450
+ ENDIF
+C...Now we have a list of best gluon insertions, none of which cause
+C...singlets to arise. If list is empty, try again a few times. Note:
+C...this should never happen if we have a meson with a gluon inserted
+C...in the beam remnant, since that breaks up the colour line.
+ IF (NOPT.EQ.0) THEN
+C...Abandon BR-g-BR suppression for retries. This is not serious, it
+C...just means we happened to start with trying a bad sequence.
+ PARP80=1D0
+ IF (MRETRY.LE.10.AND.(ITJUNC(1).NE.0.OR.JST(1,3).EQ.0).AND
+ & .(ITJUNC(2).NE.0.OR.JST(2,3).EQ.0)) THEN
+ MRETRY=MRETRY+1
+ DO 590 JS=1,2
+ IF (ITJUNC(JS).NE.0) THEN
+ JST(JS,1)=IV(JS,1)
+ JST(JS,2)=IV(JS,2)
+ JST(JS,3)=IV(JS,3)
+C...Reset valence quark parent pointers
+ DO 560 I=MINT(53)+1,N
+ IF (K(I,2).EQ.88.AND.K(I,3).EQ.JS) IJU=I
+ 560 CONTINUE
+ MANTI=ITJUNC(JS)-1
+C...Set (anti)colour mother = junction.
+ DO 570 JV=1,3
+ K(IV(JS,JV),4+MANTI)=MOD(K(IV(JS,JV),4+MANTI),MSTU(5))
+ & +MSTU(5)*IJU
+ 570 CONTINUE
+ ELSE
+C...Same for mesons. JST unchanged, so needn't be restored.
+ IQ=JST(JS,1)
+ IQBAR=JST(JS,2)
+ K(IQ,4)=MOD(K(IQ,4),MSTU(5))+MSTU(5)*IQBAR
+ K(IQBAR,5)=MOD(K(IQBAR,5),MSTU(5))+MSTU(5)*IQ
+ ENDIF
+C...Also reset gluon parent pointers.
+ NG(JS)=0
+ DO 580 IM=1,NMI(JS)
+ I=IMI(JS,IM,1)
+ IF (K(I,2).EQ.21) THEN
+ K(I,4)=MOD(K(I,4),MSTU(5))
+ K(I,5)=MOD(K(I,5),MSTU(5))
+ NG(JS)=NG(JS)+1
+ ENDIF
+ 580 CONTINUE
+ 590 CONTINUE
+C...Reset colour tags
+ DO 600 I=MINT(84)+1,N
+ MCT(I,1)=MCO(I,1)
+ MCT(I,2)=MCO(I,2)
+ 600 CONTINUE
+ GOTO 400
+ ELSE
+ IF(NERRPR.LT.5) THEN
+ NERRPR=NERRPR+1
+ CALL PYLIST(4)
+ CALL PYERRM(19,'(PYMIHK:) No physical colour flow found!')
+ WRITE(MSTU(11),*) 'NG:', NG,' MOUT:', MOUT(JS)
+ ENDIF
+C...Kill event and start another.
+ MINT(51)=1
+ RETURN
+ ENDIF
+ ELSE
+C...Select between insertions, suppressing insertions wholly in the BR.
+ IIN=PYR(0)*NOPT+1
+ 610 IIN=MOD(IIN,NOPT)+1
+ IF (INSR(IIN,1).GT.MINT(53).AND.INSR(IIN,3).GT.MINT(53)
+ & .AND.MOUT(JS).NE.0.AND.PYR(0).GT.PARP80) GOTO 610
+ ENDIF
+
+C...Now we know which gluon to insert where. Colour tags in JCCO and
+C...colour connection information should be updated, NG(JS) should be
+C...counted down, and a new loop performed if there are still gluons
+C...left on any side.
+ ICM=INSR(IIN,1)
+ IACM=INSR(IIN,3)
+ IGL=INSR(IIN,2)
+C...JCG : Original gluon colour tag
+C...JCAG: Original gluon anticolour tag.
+C...JCM : Original anticolour tag of gluon colour mother
+C...JACM: Original colour tag of gluon anticolour mother
+ JCG=MCO(IGL,1)
+ JCM=MCO(ICM,2)
+ JACG=MCO(IGL,2)
+ JACM=MCO(IACM,1)
+
+ CALL PYMIHG(JACM,JACG,JCM,JCG)
+ IF (MACCPT.EQ.0) THEN
+ IF(NERRPR.LT.5) THEN
+ NERRPR=NERRPR+1
+ CALL PYLIST(4)
+ CALL PYERRM(11,'(PYMIHK:) Unphysical colour flow!')
+ WRITE(MSTU(11),*) 'attaching', IGL,' between', ICM, IACM
+ ENDIF
+C...Kill event and start another.
+ MINT(51)=1
+ RETURN
+ ELSE
+C...If everything went fine, store new JCCN in JCCO.
+ NCC=NCC+1
+ DO 620 ICC=1,NCC
+ JCCO(ICC,1)=JCCN(ICC,1)
+ JCCO(ICC,2)=JCCN(ICC,2)
+ 620 CONTINUE
+ ENDIF
+
+C...One gluon attached is counted as equivalent to one end outside.
+ MOUT(JS)=1
+C...Set IGL colour mother = ICM.
+ K(IGL,4)=MOD(K(IGL,4),MSTU(5))+MSTU(5)*ICM
+C...Set ICM anticolour mother = IGL colour.
+ IF (K(ICM,2).NE.88) THEN
+ K(ICM,5)=MOD(K(ICM,5),MSTU(5))+MSTU(5)*IGL
+ ELSE
+C...If ICM is junction, just update JST array for now.
+ DO 630 MSJ=1,3
+ IF (JST(JS,MSJ).EQ.IACM) JST(JS,MSJ)=IGL
+ 630 CONTINUE
+ ENDIF
+C...Set IGL anticolour mother = IACM.
+ K(IGL,5)=MOD(K(IGL,5),MSTU(5))+MSTU(5)*IACM
+C...Set IACM anticolour mother = IGL anticolour.
+ IF (K(IACM,2).NE.88) THEN
+ K(IACM,4)=MOD(K(IACM,4),MSTU(5))+MSTU(5)*IGL
+ ELSE
+C...If IACM is junction, just update JST array for now.
+ DO 640 MSJ=1,3
+ IF (JST(JS,MSJ).EQ.ICM) JST(JS,MSJ)=IGL
+ 640 CONTINUE
+ ENDIF
+C...Count down # unconnected gluons.
+ NG(JS)=NG(JS)-1
+ ENDIF
+ IF (NG(1).GT.0.OR.NG(2).GT.0) GOTO 440
+
+ DO 840 JS=1,2
+C...Collapse fictitious gluons.
+ DO 670 IGL=MINT(53)+1,N
+ IF (K(IGL,2).EQ.21.AND.K(IGL,3).EQ.MINT(83)+JS.AND.
+ & K(IGL,1).EQ.14) THEN
+ ICM=K(IGL,4)/MSTU(5)
+ IAM=K(IGL,5)/MSTU(5)
+ ICD=MOD(K(IGL,4),MSTU(5))
+ IAD=MOD(K(IGL,5),MSTU(5))
+C...Set gluon daughters pointing to gluon mothers
+ K(IAD,5)=MOD(K(IAD,5),MSTU(5))+MSTU(5)*IAM
+ K(ICD,4)=MOD(K(ICD,4),MSTU(5))+MSTU(5)*ICM
+C...Set gluon mothers pointing to gluon daughters.
+ IF (K(ICM,2).NE.88) THEN
+ K(ICM,5)=MOD(K(ICM,5),MSTU(5))+MSTU(5)*ICD
+ ELSE
+C...Special case: mother=junction. Just update JST array for now.
+ DO 650 MSJ=1,3
+ IF (JST(JS,MSJ).EQ.IGL) JST(JS,MSJ)=ICD
+ 650 CONTINUE
+ ENDIF
+ IF (K(IAM,2).NE.88) THEN
+ K(IAM,4)=MOD(K(IAM,4),MSTU(5))+MSTU(5)*IAD
+ ELSE
+ DO 660 MSJ=1,3
+ IF (JST(JS,MSJ).EQ.IGL) JST(JS,MSJ)=IAD
+ 660 CONTINUE
+ ENDIF
+ ENDIF
+ 670 CONTINUE
+
+C...Erase collapsed gluons from NMI and IMI (but keep them in ER)
+ IM=NMI(JS)+1
+ 680 IM=IM-1
+ IF (IM.GT.MINT(31).AND.K(IMI(JS,IM,1),2).NE.21) GOTO 680
+ IF (IM.GT.MINT(31)) THEN
+ NMI(JS)=NMI(JS)-1
+ DO 690 IMR=IM,NMI(JS)
+ IMI(JS,IMR,1)=IMI(JS,IMR+1,1)
+ IMI(JS,IMR,2)=IMI(JS,IMR+1,2)
+ 690 CONTINUE
+ GOTO 680
+ ENDIF
+
+C...Finally, connect junction.
+ IF (ITJUNC(JS).NE.0) THEN
+ DO 700 I=MINT(53)+1,N
+ IF (K(I,2).EQ.88.AND.K(I,3).EQ.MINT(83)+JS) IJU=I
+ 700 CONTINUE
+C...NBRJQ counts # of jq, NBRVQ # of jv, inside BR.
+ NBRJQ =0
+ NBRVQ =0
+ DO 720 MSJ=1,3
+ IDQ(MSJ)=0
+C...Find jq with no glue inbetween inside beam remnant.
+ IF (JST(JS,MSJ).GT.MINT(53).AND.IABS(K(JST(JS,MSJ),2)).LE.5)
+ & THEN
+ NBRJQ=NBRJQ+1
+C...Set IDQ = -I if q non-valence and = +I if q valence.
+ IDQ(NBRJQ)=-JST(JS,MSJ)
+ DO 710 JV=1,3
+ IF (IV(JS,JV).EQ.JST(JS,MSJ)) THEN
+ IDQ(NBRJQ)=JST(JS,MSJ)
+ NBRVQ=NBRVQ+1
+ ENDIF
+ 710 CONTINUE
+ ENDIF
+ I12=MOD(MSJ+1,2)
+ I45=5
+ IF (MSJ.EQ.3) I45=4
+ K(IJU,I45)=K(IJU,I45)+(MSTU(5)**I12)*JST(JS,MSJ)
+ 720 CONTINUE
+
+C...Check if diquark can be formed.
+ IF ((MSTP(88).GE.0.AND.NBRVQ.GE.2).OR.(NBRJQ.GE.2.AND.MSTP(88)
+ & .GE.1)) THEN
+C...If there is less than 2 valence quarks connected to junction
+C...and MSTP(88)>1, use random non-valence quarks to fill up.
+ IF (NBRVQ.LE.1) THEN
+ NDIQ=NBRVQ
+ 730 JFLIP=NBRJQ*PYR(0)+1
+ IF (IDQ(JFLIP).LT.0) THEN
+ IDQ(JFLIP)=-IDQ(JFLIP)
+ NDIQ=NDIQ+1
+ ENDIF
+ IF (NDIQ.LE.1) GOTO 730
+ ENDIF
+C...Place selected quarks first in IDQ, ordered in flavour.
+ DO 740 JDQ=1,3
+ IF (IDQ(JDQ).LE.0) THEN
+ ITEMP1 = IDQ(JDQ)
+ IDQ(JDQ)= IDQ(3)
+ IDQ(3) = -ITEMP1
+ IF (IABS(K(IDQ(1),2)).LT.IABS(K(IDQ(2),2))) THEN
+ ITEMP1 = IDQ(1)
+ IDQ(1) = IDQ(2)
+ IDQ(2) = ITEMP1
+ ENDIF
+ ENDIF
+ 740 CONTINUE
+C...Choose diquark spin.
+ IF (NBRVQ.EQ.2) THEN
+C...If the selected quarks are both valence, we may use SU(6) rules
+C...to figure out which spin the diquark has, by a subdivision of the
+C...original beam hadron into the selected diquark system plus a kicked
+C...out quark, IKO.
+ JKO=6
+ DO 760 JDQ=1,2
+ DO 750 JV=1,3
+ IF (IDQ(JDQ).EQ.IV(JS,JV)) JKO=JKO-JV
+ 750 CONTINUE
+ 760 CONTINUE
+ IKO=IV(JS,JKO)
+ CALL PYSPLI(MINT(10+JS),K(IKO,2),KFDUM,KFDQ)
+ ELSE
+C...If one or more of the selected quarks are not valence, we cannot use
+C...SU(6) subdivisions of the original beam hadron. Instead, with the
+C...flavours of the diquark already selected, we assume for now
+C...50:50 spin-1:spin-0 (where spin-0 possible).
+ KFDQ=1000*K(IDQ(1),2)+100*K(IDQ(2),2)
+ IS=3
+ IF (K(IDQ(1),2).NE.K(IDQ(2),2).AND.
+ & (1D0+3D0*PARJ(4))*PYR(0).LT.1D0) IS=1
+ KFDQ=KFDQ+ISIGN(IS,KFDQ)
+ ENDIF
+
+C...Collapse diquark-j-quark system to baryon, if allowed and possible.
+C...Note: third quark can per definition not also be valence,
+C...therefore we can only do this if we are allowed to use sea quarks.
+ 770 IF (IDQ(3).NE.0.AND.MSTP(88).GE.2) THEN
+ NTRY=0
+ 780 NTRY=NTRY+1
+ CALL PYKFDI(KFDQ,K(IABS(IDQ(3)),2),KFDUM,KFBAR)
+ IF (KFBAR.EQ.0.AND.NTRY.LE.100) THEN
+ GOTO 780
+ ELSEIF(NTRY.GT.100) THEN
+C...If no baryon can be found, give up and form diquark.
+ IDQ(3)=0
+ GOTO 770
+ ELSE
+C...Replace junction by baryon.
+ K(IJU,1)=1
+ K(IJU,2)=KFBAR
+ K(IJU,3)=MINT(83)+JS
+ K(IJU,4)=0
+ K(IJU,5)=0
+ P(IJU,5)=PYMASS(KFBAR)
+ DO 790 MSJ=1,3
+C...Prepare removal of participating quarks from ER.
+ K(JST(JS,MSJ),1)=-1
+ 790 CONTINUE
+ ENDIF
+ ELSE
+C...If collapse to baryon not possible or not allowed, replace junction
+C...by diquark. This way, collapsed gluons that were pointing at the
+C...junction will now point (correctly) at diquark.
+ MANTI=ITJUNC(JS)-1
+ K(IJU,1)=3
+ K(IJU,2)=KFDQ
+ K(IJU,3)=MINT(83)+JS
+ K(IJU,4)=0
+ K(IJU,5)=0
+ DO 800 MSJ=1,3
+ IP=JST(JS,MSJ)
+ IF (IP.NE.IDQ(1).AND.IP.NE.IDQ(2)) THEN
+ K(IJU,4+MANTI)=0
+ K(IJU,5-MANTI)=IP*MSTU(5)
+ K(IP,4+MANTI)=MOD(K(IP,4+MANTI),MSTU(5))+
+ & MSTU(5)*IJU
+ MCT(IJU,2-MANTI)=MCT(IP,1+MANTI)
+ ELSE
+C...Prepare removal of participating quarks from ER.
+ K(IP,1)=-1
+ ENDIF
+ 800 CONTINUE
+ ENDIF
+
+C...Update so ER pointers to collapsed quarks
+C...now go to collapsed object.
+ DO 820 I=MINT(84)+1,N
+ IF ((K(I,3).EQ.MINT(83)+JS.OR.K(I,3).EQ.MINT(83)+2+JS).AND
+ & .K(I,1).GT.0) THEN
+ DO 810 ISID=4,5
+ IMO=K(I,ISID)/MSTU(5)
+ IDA=MOD(K(I,ISID),MSTU(5))
+ IF (IMO.GT.0) THEN
+ IF (K(IMO,1).EQ.-1) IMO=IJU
+ ENDIF
+ IF (IDA.GT.0) THEN
+ IF (K(IDA,1).EQ.-1) IDA=IJU
+ ENDIF
+ K(I,ISID)=IDA+MSTU(5)*IMO
+ 810 CONTINUE
+ ENDIF
+ 820 CONTINUE
+ ENDIF
+ ENDIF
+
+C...Finally, if beam remnant is empty, insert a gluon in beam remnant.
+C...(this only happens for baryons, where we want to force the gluon
+C...to sit next to the junction. Mesons handled above.)
+ IF (NBRTOT(JS).EQ.0) THEN
+ N=N+1
+ DO 830 IX=1,5
+ K(N,IX)=0
+ P(N,IX)=0D0
+ V(N,IX)=0D0
+ 830 CONTINUE
+ IGL=N
+ K(IGL,1)=3
+ K(IGL,2)=21
+ K(IGL,3)=MINT(83)+JS
+ IF (ITJUNC(JS).NE.0) THEN
+C...Incoming baryons. Pick random leg in JST (NVSUM = 3 for baryons)
+ JLEG=PYR(0)*NVSUM(JS)+1
+ I1=JST(JS,JLEG)
+ JST(JS,JLEG)=IGL
+ JCT=MCT(I1,ITJUNC(JS))
+ MCT(IGL,3-ITJUNC(JS))=JCT
+ NCT=NCT+1
+ MCT(IGL,ITJUNC(JS))=NCT
+ MANTI=ITJUNC(JS)-1
+ ELSE
+C...Meson. Should not happen.
+ CALL PYERRM(19,'(PYMIHK:) Empty meson beam remnant')
+ IF(NERRPR.LT.5) THEN
+ WRITE(MSTU(11),*) 'This should not have been possible!'
+ CALL PYLIST(4)
+ NERRPR=NERRPR+1
+ ENDIF
+ MINT(51)=1
+ RETURN
+ ENDIF
+ I2=MOD(K(I1,4+MANTI)/MSTU(5),MSTU(5))
+ K(I1,4+MANTI)=MOD(K(I1,4+MANTI),MSTU(5))+MSTU(5)*IGL
+ K(IGL,5-MANTI)=MOD(K(IGL,5-MANTI),MSTU(5))+MSTU(5)*I1
+ K(IGL,4+MANTI)=MOD(K(IGL,4+MANTI),MSTU(5))+MSTU(5)*I2
+ IF (K(I2,2).NE.88) THEN
+ K(I2,5-MANTI)=MOD(K(I2,5-MANTI),MSTU(5))+MSTU(5)*IGL
+ ELSE
+ IF (MOD(K(I2,4),MSTU(5)).EQ.I1) THEN
+ K(I2,4)=(K(I2,4)/MSTU(5))*MSTU(5)+IGL
+ ELSEIF(MOD(K(I2,5)/MSTU(5),MSTU(5)).EQ.I1) THEN
+ K(I2,5)=MOD(K(I2,5),MSTU(5))+MSTU(5)*IGL
+ ELSE
+ K(I2,5)=(K(I2,5)/MSTU(5))*MSTU(5)+IGL
+ ENDIF
+ ENDIF
+ ENDIF
+ 840 CONTINUE
+
+C...Remove collapsed quarks and junctions from ER and update IMI.
+ CALL PYEDIT(11)
+
+C...Also update beam remnant part of IMI.
+ NMI(1)=MINT(31)
+ NMI(2)=MINT(31)
+ DO 850 I=MINT(53)+1,N
+ IF (K(I,1).LE.0) GOTO 850
+C...Restore BR quark/diquark/baryon pointers in IMI.
+ IF ((K(I,2).NE.21.OR.K(I,1).NE.14).AND.K(I,2).NE.88) THEN
+ JS=K(I,3)-MINT(83)
+ NMI(JS)=NMI(JS)+1
+ IMI(JS,NMI(JS),1)=I
+ IMI(JS,NMI(JS),2)=0
+ ENDIF
+ 850 CONTINUE
+
+C...Restore companion information from collapsed gluons.
+ DO 870 I=MINT(53)+1,N
+ IF (K(I,2).EQ.21.AND.K(I,1).EQ.14) THEN
+ JS=K(I,3)-MINT(83)
+ JCD=MOD(K(I,4),MSTU(5))
+ JAD=MOD(K(I,5),MSTU(5))
+ DO 860 IM=1,NMI(JS)
+ IF (IMI(JS,IM,1).EQ.JCD) IMC=IM
+ IF (IMI(JS,IM,1).EQ.JAD) IMA=IM
+ 860 CONTINUE
+ IMI(JS,IMC,2)=IMI(JS,IMA,1)
+ IMI(JS,IMA,2)=IMI(JS,IMC,1)
+ ENDIF
+ 870 CONTINUE
+
+C...Renumber colour lines (since some have disappeared)
+ JCT=0
+ JCD=0
+ 880 JCT=JCT+1
+ MFOUND=0
+ I=MINT(84)
+ 890 I=I+1
+ IF (I.EQ.N+1) THEN
+ IF (MFOUND.EQ.0) JCD=JCD+1
+ ELSEIF (MCT(I,1).EQ.JCT.AND.K(I,1).GE.1) THEN
+ MCT(I,1)=JCT-JCD
+ MFOUND=1
+ ELSEIF (MCT(I,2).EQ.JCT.AND.K(I,1).GE.1) THEN
+ MCT(I,2)=JCT-JCD
+ MFOUND=1
+ ENDIF
+ IF (I.LE.N) GOTO 890
+ IF (JCT.LT.NCT) GOTO 880
+ NCT=JCT-JCD
+
+C...Reset hard interaction subsystems to their CM frames.
+ IF (IBOOST.EQ.1) THEN
+ DO 900 IM=1,MINT(31)
+ BETA=-(XMI(1,IM)-XMI(2,IM))/(XMI(1,IM)+XMI(2,IM))
+ CALL PYROBO(IMISEP(IM-1)+1,IMISEP(IM),0D0,0D0,0D0,0D0,BETA)
+ 900 CONTINUE
+C...Zero beam remnant longitudinal momenta and energies
+ DO 910 I=MINT(53)+1,N
+ P(I,3)=0D0
+ P(I,4)=0D0
+ 910 CONTINUE
+ ELSE
+ CALL PYERRM(9
+ & ,'(PYMIHK:) Inconsistent kinematics. Too many boosts.')
+C...Kill event and start another.
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+ 9999 RETURN
+ END
+C*********************************************************************
+
+C...PYCTTR
+C...Adapted from PYPREP.
+C...Assigns LHA1 colour tags to coloured partons based on
+C...K(I,4) and K(I,5) colour connection record.
+C...KCS negative signifies that a previous tracing should be continued.
+C...(in case the tag to be continued is empty, the routine exits)
+C...Starts at I and ends at I or IEND.
+C...Special considerations for systems with junctions.
+
+ SUBROUTINE PYCTTR(I,KCS,IEND)
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYINT1/MINT(400),VINT(400)
+C...The common block of colour tags.
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYINT1/,/PYCTAG/
+ DATA NERRPR/0/
+ SAVE NERRPR
+
+C...Skip if parton not existing or does not have KCS
+ IF (K(I,1).LE.0) GOTO 120
+ KC=PYCOMP(K(I,2))
+ IF (KC.EQ.0) GOTO 120
+ KQ=KCHG(KC,2)
+ IF (KQ.EQ.0) GOTO 120
+ IF (IABS(KQ).EQ.1.AND.KQ*(9-2*ABS(KCS)).NE.ISIGN(1,K(I,2)))
+ & GOTO 120
+
+ IF (KCS.GT.0) THEN
+ NCT=NCT+1
+C...Set colour tag of first parton.
+ MCT(I,KCS-3)=NCT
+ NCS=NCT
+ ELSE
+ KCS=-KCS
+ NCS=MCT(I,KCS-3)
+ IF (NCS.EQ.0) GOTO 120
+ ENDIF
+
+ IA=I
+ NSTP=0
+ 100 NSTP=NSTP+1
+ IF(NSTP.GT.4*N) THEN
+ CALL PYERRM(14,'(PYCTTR:) caught in infinite loop')
+ GOTO 120
+ ENDIF
+
+C...Finished if reached final-state triplet.
+ IF(K(IA,1).EQ.3) THEN
+ IF(NSTP.GE.2.AND.KCHG(PYCOMP(K(IA,2)),2).NE.2) GOTO 120
+ ENDIF
+
+C...Also finished if reached junction.
+ IF(K(IA,1).EQ.42) THEN
+ GOTO 120
+ ENDIF
+
+C...GOTO next parton in colour space.
+ 110 IB=IA
+C...If IB's KCS daughter not traced and exists, goto KCS daughter.
+ IF(MOD(K(IB,KCS)/MSTU(5)**2,2).EQ.0.AND.MOD(K(IB,KCS),MSTU(5))
+ & .NE.0) THEN
+ IA=MOD(K(IB,KCS),MSTU(5))
+ K(IB,KCS)=K(IB,KCS)+MSTU(5)**2
+ MREV=0
+ ELSE
+C...If KCS mother traced or KCS mother nonexistent, switch colour.
+ IF(K(IB,KCS).GE.2*MSTU(5)**2.OR.MOD(K(IB,KCS)/MSTU(5),
+ & MSTU(5)).EQ.0) THEN
+ KCS=9-KCS
+ NCT=NCT+1
+ NCS=NCT
+C...Assign new colour tag on other side of old parton.
+ MCT(IB,KCS-3)=NCT
+ ENDIF
+C...Goto (new) KCS mother, set mother traced tag
+ IA=MOD(K(IB,KCS)/MSTU(5),MSTU(5))
+ K(IB,KCS)=K(IB,KCS)+2*MSTU(5)**2
+ MREV=1
+ ENDIF
+ IF(IA.LE.0.OR.IA.GT.N) THEN
+ CALL PYERRM(12,'(PYCTTR:) colour tag tracing failed')
+ IF(NERRPR.LT.5) THEN
+ write(*,*) 'began at ',I
+ write(*,*) 'ended going from', IB, ' to', IA, ' KCS=',KCS,
+ & ' NCS=',NCS,' MREV=',MREV
+ CALL PYLIST(4)
+ NERRPR=NERRPR+1
+ ENDIF
+ MINT(51)=1
+ RETURN
+ ENDIF
+ IF(MOD(K(IA,4)/MSTU(5),MSTU(5)).EQ.IB.OR.MOD(K(IA,5)/MSTU(5),
+ & MSTU(5)).EQ.IB) THEN
+ IF(MREV.EQ.1) KCS=9-KCS
+ IF(MOD(K(IA,KCS)/MSTU(5),MSTU(5)).NE.IB) KCS=9-KCS
+C...Set KSC mother traced tag for IA
+ K(IA,KCS)=K(IA,KCS)+2*MSTU(5)**2
+ ELSE
+ IF(MREV.EQ.0) KCS=9-KCS
+ IF(MOD(K(IA,KCS),MSTU(5)).NE.IB) KCS=9-KCS
+C...Set KCS daughter traced tag for IA
+ K(IA,KCS)=K(IA,KCS)+MSTU(5)**2
+ ENDIF
+C...Assign new colour tag
+ MCT(IA,KCS-3)=NCS
+ IF(IA.NE.I.AND.IA.NE.IEND) GOTO 100
+
+ 120 RETURN
+ END
+
+*********************************************************************
+
+C...PYMIHG
+C...Collapse JCP1 and connecting tags to JCG1.
+C...Collapse JCP2 and connecting tags to JCG2.
+
+ SUBROUTINE PYMIHG(JCP1,JCG1,JCP2,JCG2)
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...The event record
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+C...Parameters
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYINT1/
+C...Local variables
+ COMMON /PYCBLS/MCO(4000,2),NCC,JCCO(4000,2),JCCN(4000,2),MACCPT
+ COMMON /PYCTAG/NCT,MCT(4000,2)
+ SAVE /PYCBLS/,/PYCTAG/
+
+C...Break up JCP1<->JCP2 tag and create JCP1<->JCG1 and JCP2<->JCG2 tags
+C...in temporary tag collapse array JCCN. Only break up one connection.
+ MACCPT=1
+ MCLPS=0
+ DO 100 ICC=1,NCC
+ JCCN(ICC,1)=JCCO(ICC,1)
+ JCCN(ICC,2)=JCCO(ICC,2)
+C...If there was a mother, it was previously connected to JCP1.
+C...Should be changed to JCP2.
+ IF (MCLPS.EQ.0) THEN
+ IF (JCCN(ICC,1).EQ.MAX(JCP1,JCP2).AND.JCCN(ICC,2).EQ.MIN(JCP1
+ & ,JCP2)) THEN
+ JCCN(ICC,1)=MAX(JCG2,JCP2)
+ JCCN(ICC,2)=MIN(JCG2,JCP2)
+ MCLPS=1
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+C...Also collapse colours on JCP1 side of JCG1
+ IF (JCP1.NE.0) THEN
+ JCCN(NCC+1,1)=MAX(JCP1,JCG1)
+ JCCN(NCC+1,2)=MIN(JCP1,JCG1)
+ ELSE
+ JCCN(NCC+1,1)=MAX(JCP2,JCG2)
+ JCCN(NCC+1,2)=MIN(JCP2,JCG2)
+ ENDIF
+
+C...Initialize event record colour tag array MCT array to MCO.
+ DO 110 I=MINT(84)+1,N
+ MCT(I,1)=MCO(I,1)
+ MCT(I,2)=MCO(I,2)
+ 110 CONTINUE
+
+C...Collapse tags:
+C...IS = 1 : All tags connecting to JCG1 on JCG1 side -> JCG1
+C...IS = 2 : All tags connecting to JCG2 on JCG2 side -> JCG2
+C...IS = 3 : All tags connecting to JCG1 on JCP1 side -> JCG1
+C...IS = 4 : All tags connecting to JCG2 on JCP2 side -> JCG2
+ DO 160 IS=1,4
+C...Skip if junction.
+ IF ((IS.EQ.4.AND.JCP2.EQ.0).OR.(IS.EQ.3).AND.JCP1.EQ.0) GOTO 160
+C...Define starting point in tag space.
+C...JCA = previous tag
+C...JCO = present tag
+C...JCN = new tag
+ IF (MOD(IS,2).EQ.1) THEN
+ JCO=JCP1
+ JCN=JCG1
+ JCALL=JCG1
+ ELSEIF (MOD(IS,2).EQ.0) THEN
+ JCO=JCP2
+ JCN=JCG2
+ JCALL=JCG2
+ ENDIF
+ ITRACE=0
+ 120 ITRACE=ITRACE+1
+ IF (ITRACE.GT.1000) THEN
+C...NB: Proper error message should be defined here.
+ CALL PYERRM(14
+ & ,'(PYMIHG:) Inf loop when collapsing colours.')
+ MINT(57)=MINT(57)+1
+ MINT(51)=1
+ RETURN
+ ENDIF
+C...Collapse all JCN tags to JCALL
+ DO 130 I=MINT(84)+1,N
+ IF (MCO(I,1).EQ.JCN) MCT(I,1)=JCALL
+ IF (MCO(I,2).EQ.JCN) MCT(I,2)=JCALL
+ 130 CONTINUE
+C...IS = 1,2: first step forward. IS = 3,4: first step backward.
+ IF (IS.GT.2.AND.(JCN.EQ.JCALL)) THEN
+ JCA=JCN
+ JCN=JCO
+ ELSE
+ JCA=JCO
+ JCO=JCN
+ ENDIF
+C...If possible, step from JCO to new tag JCN not equal to JCA.
+ DO 140 ICC=1,NCC+1
+ IF (JCCN(ICC,1).EQ.JCO.AND.JCCN(ICC,2).NE.JCA) JCN=
+ & JCCN(ICC,2)
+ IF (JCCN(ICC,2).EQ.JCO.AND.JCCN(ICC,1).NE.JCA) JCN=
+ & JCCN(ICC,1)
+ 140 CONTINUE
+C...Iterate if new colour was arrived at, but don't go in circles.
+ IF (JCN.NE.JCO.AND.JCN.NE.JCALL) GOTO 120
+C...Change all JCN tags in MCO to JCALL in MCT.
+ DO 150 I=MINT(84)+1,N
+ IF (MCO(I,1).EQ.JCN) MCT(I,1)=JCALL
+ IF (MCO(I,2).EQ.JCN) MCT(I,2)=JCALL
+C...If gluon and colour tag = anticolour tag (and not = 0) try again.
+ IF (K(I,2).EQ.21.AND.MCT(I,1).EQ.MCT(I,2).AND.MCT(I,1)
+ & .NE.0) MACCPT=0
+ 150 CONTINUE
+ 160 CONTINUE
+
+ DO 200 JCL=NCT,1,-1
+ JCA=0
+ JCN=JCL
+ 170 JCO=JCN
+ DO 180 ICC=1,NCC+1
+ IF (JCCN(ICC,1).EQ.JCO.AND.JCCN(ICC,2).NE.JCA) JCN
+ & =JCCN(ICC,2)
+ IF (JCCN(ICC,2).EQ.JCO.AND.JCCN(ICC,1).NE.JCA) JCN
+ & =JCCN(ICC,1)
+ 180 CONTINUE
+C...Overpaint all JCN with JCL
+ IF (JCN.NE.JCO.AND.JCN.NE.JCL) THEN
+ DO 190 I=MINT(84)+1,N
+ IF (MCT(I,1).EQ.JCN) MCT(I,1)=JCL
+ IF (MCT(I,2).EQ.JCN) MCT(I,2)=JCL
+C...If gluon and colour tag = anticolour tag (and not = 0) try again.
+ IF (K(I,2).EQ.21.AND.MCT(I,1).EQ.MCT(I,2).AND.MCT(I,1)
+ & .NE.0) MACCPT=0
+ 190 CONTINUE
+ JCA=JCO
+ GOTO 170
+ ENDIF
+ 200 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMIRM
+C...Picks primordial kT and shares longitudinal momentum among
+C...beam remnants.
+
+ SUBROUTINE PYMIRM
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...The event record
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+C...Parameters
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+C...The common block of colour tags.
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+C...The common block of dangling ends
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ SAVE /PYJETS/,/PYDAT1/,/PYPARS/,/PYINT1/,/PYINTM/,/PYCTAG/
+C...Local variables
+ DIMENSION W(0:2,0:2),VB(3),NNXT(2),IVALQ(2),ICOMQ(2)
+C...W(I,J)| J=0 | 1 | 2 |
+C... I=0 | Wrem**2 | W+ | W- |
+C... 1 | W1**2 | W1+ | W1- |
+C... 2 | W2**2 | W2+ | W2- |
+C...4-product
+ FOUR(I,J)=P(I,4)*P(J,4)-P(I,1)*P(J,1)-P(I,2)*P(J,2)-P(I,3)*P(J,3)
+C...Tentative parametrization of <kT> as a function of Q.
+ SIGPT(Q)=MAX(PARJ(21),2.1D0*Q/(7D0+Q))
+C SIGPT(Q)=MAX(0.36D0,4D0*SQRT(Q)/(10D0+SQRT(Q))
+C SIGPT(Q)=MAX(PARJ(21),3D0*SQRT(Q)/(5D0+SQRT(Q))
+ GETPT(Q,SIGMA)=MIN(SIGMA*SQRT(-LOG(PYR(0))),PARP(93))
+C...Lambda kinematic function.
+ FLAM(A,B,C)=A**2+B**2+C**2-2D0*(A*B+B*C+C*A)
+
+C...Beginning and end of beam remnant partons
+ NOUT=MINT(53)
+ ISUB=MINT(1)
+
+C...Loopback point if kinematic choices gives impossible configuration.
+ NTRY=0
+ 100 NTRY=NTRY+1
+
+C...Assign kT values on each side separately.
+ DO 180 JS=1,2
+
+C...First zero all kT on this side. Skip if no kT to generate.
+ DO 110 IM=1,NMI(JS)
+ P(IMI(JS,IM,1),1)=0D0
+ P(IMI(JS,IM,1),2)=0D0
+ 110 CONTINUE
+ IF(MSTP(91).LE.0) GOTO 180
+
+C...Now assign kT to each (non-collapsed) parton in IMI.
+ DO 170 IM=1,NMI(JS)
+ I=IMI(JS,IM,1)
+C...Select kT according to truncated gaussian or 1/kt6 tails.
+C...For first interaction, either use rms width = PARP(91) or fitted.
+ IF (IM.EQ.1) THEN
+ SIGMA=PARP(91)
+ IF (MSTP(91).GE.11.AND.MSTP(91).LE.20) THEN
+ Q=SQRT(PT2MI(IM))
+ SIGMA=SIGPT(Q)
+ ENDIF
+ ELSE
+C...For subsequent interactions and BR partons use fragmentation width.
+ SIGMA=PARJ(21)
+ ENDIF
+ PHI=PARU(2)*PYR(0)
+ PT=0D0
+ IF(NTRY.LE.100) THEN
+ 111 IF (MSTP(91).EQ.1.OR.MSTP(91).EQ.11) THEN
+ PT=GETPT(Q,SIGMA)
+ PTX=PT*COS(PHI)
+ PTY=PT*SIN(PHI)
+ ELSEIF (MSTP(91).EQ.2) THEN
+ CALL PYERRM(11,'(PYMIRM:) Sorry, MSTP(91)=2 not '//
+ & 'available, using MSTP(91)=1.')
+ CALL PYGIVE('MSTP(91)=1')
+ GOTO 111
+ ELSEIF(MSTP(91).EQ.3.OR.MSTP(91).EQ.13) THEN
+C...Use distribution with kt**6 tails, rms width = PARP(91).
+ EPS=SQRT(3D0/2D0)*SIGMA
+C...Generate PTX and PTY separately, each propto 1/KT**6
+ DO 119 IXY=1,2
+C...Decide which interval to try
+ 112 P12=1D0/(1D0+27D0/40D0*SIGMA**6/EPS**6)
+ IF (PYR(0).LT.P12) THEN
+C...Use flat approx with accept/reject up to EPS.
+ PT=PYR(0)*EPS
+ WT=(3D0/2D0*SIGMA**2/(PT**2+3D0/2D0*SIGMA**2))**3
+ IF (PYR(0).GT.WT) GOTO 112
+ ELSE
+C...Above EPS, use 1/kt**6 approx with accept/reject.
+ PT=EPS/(PYR(0)**(1D0/5D0))
+ WT=PT**6/(PT**2+3D0/2D0*SIGMA**2)**3
+ IF (PYR(0).GT.WT) GOTO 112
+ ENDIF
+ MSIGN=1
+ IF (PYR(0).GT.0.5D0) MSIGN=-1
+ IF (IXY.EQ.1) PTX=MSIGN*PT
+ IF (IXY.EQ.2) PTY=MSIGN*PT
+ 119 CONTINUE
+ ELSEIF (MSTP(91).EQ.4.OR.MSTP(91).EQ.14) THEN
+ PTX=SIGMA*(SQRT(6D0)*PYR(0)-SQRT(3D0/2D0))
+ PTY=SIGMA*(SQRT(6D0)*PYR(0)-SQRT(3D0/2D0))
+ ENDIF
+C...Adjust final PT. Impose upper cutoff, or zero for soft evts.
+ PT=SQRT(PTX**2+PTY**2)
+ WT=1D0
+ IF (PT.GT.PARP(93)) WT=SQRT(PARP(93)/PT)
+ IF(ISUB.EQ.95.AND.IM.EQ.1) WT=0D0
+ PTX=PTX*WT
+ PTY=PTY*WT
+ PT=SQRT(PTX**2+PTY**2)
+ ENDIF
+
+ P(I,1)=P(I,1)+PTX
+ P(I,2)=P(I,2)+PTY
+
+C...Compensation kicks, with varying degree of local anticorrelations.
+ MCORR=MSTP(90)
+ IF (MCORR.EQ.0.OR.ISUB.EQ.95) THEN
+ PTCX=-PTX/(NMI(JS)-1)
+ PTCY=-PTY/(NMI(JS)-1)
+ IF(ISUB.EQ.95) THEN
+ PTCX=-PTX/(NMI(JS)-2)
+ PTCY=-PTY/(NMI(JS)-2)
+ ENDIF
+ DO 120 IMC=1,NMI(JS)
+ IF (IMC.EQ.IM) GOTO 120
+ IF(ISUB.EQ.95.AND.IMC.EQ.1) GOTO 120
+ P(IMI(JS,IMC,1),1)=P(IMI(JS,IMC,1),1)+PTCX
+ P(IMI(JS,IMC,1),2)=P(IMI(JS,IMC,1),2)+PTCY
+ 120 CONTINUE
+ ELSEIF (MCORR.GE.1) THEN
+ DO 140 MSID=4,5
+ NNXT(MSID-3)=0
+C...Count up # of neighbours on either side
+ IMO=I
+ 130 IMO=K(IMO,MSID)/MSTU(5)
+ IF (IMO.EQ.0) GOTO 140
+ NNXT(MSID-3)=NNXT(MSID-3)+1
+C...Stop at quarks and junctions
+ IF (MCORR.EQ.1.AND.K(IMO,2).EQ.21) GOTO 130
+ 140 CONTINUE
+C...How should compensation be shared when unequal numbers on the
+C...two sides? 50/50 regardless? N1:N2? Assume latter for now.
+ NSUM=NNXT(1)+NNXT(2)
+ T1=0
+ DO 160 MSID=4,5
+C...Total momentum to be compensated on this side
+ IF (NNXT(MSID-3).EQ.0) GOTO 160
+ PTCX=-(NNXT(MSID-3)*PTX)/NSUM
+ PTCY=-(NNXT(MSID-3)*PTY)/NSUM
+C...RS: compensation supression factor as we go out from parton I.
+C...Hardcoded behaviour RS=0.5, i.e. 1/2**n falloff,
+C...since (for now) MSTP(90) provides enough variability.
+ RS=0.5D0
+ FAC=(1D0-RS)/(RS*(1-RS**NNXT(MSID-3)))
+ IMO=I
+ 150 IDA=IMO
+ IMO=K(IMO,MSID)/MSTU(5)
+ IF (IMO.EQ.0) GOTO 160
+ FAC=FAC*RS
+ IF (K(IMO,2).NE.88) THEN
+ P(IMO,1)=P(IMO,1)+FAC*PTCX
+ P(IMO,2)=P(IMO,2)+FAC*PTCY
+ IF (MCORR.EQ.1.AND.K(IMO,2).EQ.21) GOTO 150
+C...If we reach junction, divide out the kT that would have been
+C...assigned to the junction on each of its other legs.
+ ELSE
+ L1=MOD(K(IMO,4),MSTU(5))
+ L2=K(IMO,5)/MSTU(5)
+ L3=MOD(K(IMO,5),MSTU(5))
+ P(L1,1)=P(L1,1)+0.5D0*FAC*PTCX
+ P(L1,2)=P(L1,2)+0.5D0*FAC*PTCY
+ P(L2,1)=P(L2,1)+0.5D0*FAC*PTCX
+ P(L2,2)=P(L2,2)+0.5D0*FAC*PTCY
+ P(L3,1)=P(L3,1)+0.5D0*FAC*PTCX
+ P(L3,2)=P(L3,2)+0.5D0*FAC*PTCY
+ P(IDA,1)=P(IDA,1)-0.5D0*FAC*PTCX
+ P(IDA,2)=P(IDA,2)-0.5D0*FAC*PTCY
+ ENDIF
+
+ 160 CONTINUE
+ ENDIF
+ 170 CONTINUE
+C...End assignment of kT values to initiators and remnants.
+ 180 CONTINUE
+
+C...Check kinematics constraints for non-BR partons.
+ DO 190 IM=1,MINT(31)
+ SHAT=XMI(1,IM)*XMI(2,IM)*VINT(2)
+ PT1=SQRT(P(IMI(1,IM,1),1)**2+P(IMI(1,IM,1),2)**2)
+ PT2=SQRT(P(IMI(2,IM,1),1)**2+P(IMI(2,IM,1),2)**2)
+ PT1PT2=P(IMI(1,IM,1),1)*P(IMI(2,IM,1),1)
+ & +P(IMI(1,IM,1),2)*P(IMI(2,IM,1),2)
+ IF (SHAT.LT.2D0*(PT1*PT2-PT1PT2).AND.NTRY.LE.100) THEN
+ IF(NTRY.GE.100) THEN
+C...Kill this event and start another.
+ CALL PYERRM(11,
+ & '(PYMIRM:) No consistent (x,kT) sets found')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+ 190 CONTINUE
+
+C...Calculate W+ and W- available for combined remnant system.
+ W(0,1)=VINT(1)
+ W(0,2)=VINT(1)
+ DO 200 IM=1,MINT(31)
+ PT2 = (P(IMI(1,IM,1),1)+P(IMI(2,IM,1),1))**2
+ & +(P(IMI(1,IM,1),2)+P(IMI(2,IM,1),2))**2
+ ST=XMI(1,IM)*XMI(2,IM)*VINT(2)+PT2
+ W(0,1)=W(0,1)-SQRT(XMI(1,IM)/XMI(2,IM)*ST)
+ W(0,2)=W(0,2)-SQRT(XMI(2,IM)/XMI(1,IM)*ST)
+ 200 CONTINUE
+C...Also store Wrem**2 = W+ * W-
+ W(0,0)=W(0,1)*W(0,2)
+
+ IF (W(0,0).LT.0D0.AND.NTRY.LE.100) THEN
+ IF(NTRY.GE.100) THEN
+C...Kill this event and start another.
+ CALL PYERRM(11,
+ & '(PYMIRM:) Negative beam remnant mass squared unavoidable')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ GOTO 100
+ ENDIF
+
+C...Assign unscaled x values to partons/hadrons in each of the
+C...beam remnants and calculate unscaled W+ and W- from them.
+ NTRYX=0
+ 210 NTRYX=NTRYX+1
+ DO 280 JS=1,2
+ W(JS,1)=0D0
+ W(JS,2)=0D0
+ DO 270 IM=MINT(31)+1,NMI(JS)
+ I=IMI(JS,IM,1)
+ KF=K(I,2)
+ KFA=IABS(KF)
+ ICOMP=IMI(JS,IM,2)
+
+C...Skip collapsed gluons and junctions. Reset.
+ IF (KFA.EQ.21.AND.K(I,1).EQ.14) GOTO 270
+ IF (KFA.EQ.88) GOTO 270
+ X=0D0
+ IVALQ(1)=0
+ IVALQ(2)=0
+ ICOMQ(1)=0
+ ICOMQ(2)=0
+
+C...If gluon then only beam remnant, so takes all.
+ IF(KFA.EQ.21) THEN
+ X=1D0
+C...If valence quark then use parametrized valence distribution.
+ ELSEIF(KFA.LE.6.AND.ICOMP.EQ.0) THEN
+ IVALQ(1)=KF
+C...If companion quark then derive from companion x.
+ ELSEIF(KFA.LE.6) THEN
+ ICOMQ(1)=ICOMP
+C...If valence diquark then use two parametrized valence distributions.
+ ELSEIF(KFA.GT.1000.AND.MOD(KFA/10,10).EQ.0.AND.
+ & ICOMP.EQ.0) THEN
+ IVALQ(1)=ISIGN(KFA/1000,KF)
+ IVALQ(2)=ISIGN(MOD(KFA/100,10),KF)
+C...If valence+sea diquark then combine valence + companion choices.
+ ELSEIF(KFA.GT.1000.AND.MOD(KFA/10,10).EQ.0.AND.
+ & ICOMP.LT.MSTU(5)) THEN
+ IF(KFA/1000.EQ.IABS(K(ICOMP,2))) THEN
+ IVALQ(1)=ISIGN(MOD(KFA/100,10),KF)
+ ELSE
+ IVALQ(1)=ISIGN(KFA/1000,KF)
+ ENDIF
+ ICOMQ(1)=ICOMP
+C...Extra code: workaround for diquark made out of two sea
+C...quarks, but where not (yet) ICOMP > MSTU(5).
+ DO 220 IM1=1,MINT(31)
+ IF(IMI(JS,IM1,2).EQ.I.AND.IMI(JS,IM1,1).NE.ICOMP) THEN
+ ICOMQ(2)=IMI(JS,IM1,1)
+ IVALQ(1)=0
+ ENDIF
+ 220 CONTINUE
+C...If sea diquark then sum of two derived from companion x.
+ ELSEIF(KFA.GT.1000.AND.MOD(KFA/10,10).EQ.0) THEN
+ ICOMQ(1)=MOD(ICOMP,MSTU(5))
+ ICOMQ(2)=ICOMP/MSTU(5)
+C...If meson or baryon then use fragmentation function.
+C...Somewhat arbitrary split into old and new flavour, but OK normally.
+ ELSE
+ KFL3=MOD(KFA/10,10)
+ IF(MOD(KFA/1000,10).EQ.0) THEN
+ KFL1=MOD(KFA/100,10)
+ ELSE
+ KFL1=MOD(KFA,10000)-10*KFL3-1
+ IF(MOD(KFA/1000,10).EQ.MOD(KFA/100,10).AND.
+ & MOD(KFA,10).EQ.2) KFL1=KFL1+2
+ ENDIF
+ PR=P(I,5)**2+P(I,1)**2+P(I,2)**2
+ CALL PYZDIS(KFL1,KFL3,PR,X)
+ ENDIF
+
+ DO 260 IQ=1,2
+C...Calculation of x of valence quark: assume form (1-x)^a/sqrt(x),
+C...where a=3.5 for u in proton, =2 for d in proton and =0.8 for meson.
+C...In other baryons combine u and d from proton appropriately.
+ IF(IVALQ(IQ).NE.0) THEN
+ NVAL=0
+ IF(KFIVAL(JS,1).EQ.IVALQ(IQ)) NVAL=NVAL+1
+ IF(KFIVAL(JS,2).EQ.IVALQ(IQ)) NVAL=NVAL+1
+ IF(KFIVAL(JS,3).EQ.IVALQ(IQ)) NVAL=NVAL+1
+C...Meson.
+ IF(KFIVAL(JS,3).EQ.0) THEN
+ MDU=0
+C...Baryon with three identical quarks: mix u and d forms.
+ ELSEIF(NVAL.EQ.3) THEN
+ MDU=INT(PYR(0)+5D0/3D0)
+C...Baryon, one of two identical quarks: u form.
+ ELSEIF(NVAL.EQ.2) THEN
+ MDU=2
+C...Baryon with two identical quarks, but not the one picked: d form.
+ ELSEIF(KFIVAL(JS,1).EQ.KFIVAL(JS,2).OR.KFIVAL(JS,2).EQ.
+ & KFIVAL(JS,3).OR.KFIVAL(JS,1).EQ.KFIVAL(JS,3)) THEN
+ MDU=1
+C...Baryon with three nonidentical quarks: mix u and d forms.
+ ELSE
+ MDU=INT(PYR(0)+5D0/3D0)
+ ENDIF
+ XPOW=0.8D0
+ IF(MDU.EQ.1) XPOW=3.5D0
+ IF(MDU.EQ.2) XPOW=2D0
+ 230 XX=PYR(0)**2
+ IF((1D0-XX)**XPOW.LT.PYR(0)) GOTO 230
+ X=X+XX
+ ENDIF
+
+C...Calculation of x of companion quark.
+ IF(ICOMQ(IQ).NE.0) THEN
+ XCOMP=1D-4
+ DO 240 IM1=1,MINT(31)
+ IF(IMI(JS,IM1,1).EQ.ICOMQ(IQ)) XCOMP=XMI(JS,IM1)
+ 240 CONTINUE
+ NPOW=MAX(0,MIN(4,MSTP(87)))
+ 250 XX=XCOMP*(1D0/(1D0-PYR(0)*(1D0-XCOMP))-1D0)
+ CORR=((1D0-XCOMP-XX)/(1D0-XCOMP))**NPOW*
+ & (XCOMP**2+XX**2)/(XCOMP+XX)**2
+ IF(CORR.LT.PYR(0)) GOTO 250
+ X=X+XX
+ ENDIF
+ 260 CONTINUE
+
+C...Optionally enchance x of composite systems (e.g. diquarks)
+ IF (KFA.GT.100) X=PARP(79)*X
+
+C...Store x. Also calculate light cone energies of each system.
+ XMI(JS,IM)=X
+ W(JS,JS)=W(JS,JS)+X
+ W(JS,3-JS)=W(JS,3-JS)+(P(I,5)**2+P(I,1)**2+P(I,2)**2)/X
+ 270 CONTINUE
+ W(JS,JS)=W(JS,JS)*W(0,JS)
+ W(JS,3-JS)=W(JS,3-JS)/W(0,JS)
+ W(JS,0)=W(JS,1)*W(JS,2)
+ 280 CONTINUE
+
+C...Check W1 W2 < Wrem (can be done before rescaling, since W
+C...insensitive to global rescalings of the BR x values).
+ IF (SQRT(W(1,0))+SQRT(W(2,0)).GT.SQRT(W(0,0)).AND.NTRYX.LE.100)
+ & THEN
+ GOTO 210
+ ELSEIF (NTRYX.GT.100.AND.NTRY.LE.100) THEN
+ GOTO 100
+ ELSEIF (NTRYX.GT.100) THEN
+ CALL PYERRM(11,'(PYMIRM:) No consistent (x,kT) sets found')
+ MINT(57)=MINT(57)+1
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Compute x rescaling factors
+ COMTRM=W(0,0)+SQRT(FLAM(W(0,0),W(1,0),W(2,0)))
+ R1=(COMTRM+W(1,0)-W(2,0))/(2D0*W(1,1)*W(0,2))
+ R2=(COMTRM+W(2,0)-W(1,0))/(2D0*W(2,2)*W(0,1))
+
+ IF (R1.LT.0.OR.R2.LT.0) THEN
+ CALL PYERRM(19,'(PYMIRM:) negative rescaling factors !')
+ MINT(57)=MINT(57)+1
+ MINT(51)=1
+ ENDIF
+
+C...Rescale W(1,*) and W(2,*) (not really necessary, but consistent).
+ W(1,1)=W(1,1)*R1
+ W(1,2)=W(1,2)/R1
+ W(2,1)=W(2,1)/R2
+ W(2,2)=W(2,2)*R2
+
+C...Rescale BR x values.
+ DO 290 IM=MINT(31)+1,MAX(NMI(1),NMI(2))
+ XMI(1,IM)=XMI(1,IM)*R1
+ XMI(2,IM)=XMI(2,IM)*R2
+ 290 CONTINUE
+
+C...Now we have a consistent set of x and kT values.
+C...First set up the initiators and their daughters correctly.
+ DO 300 IM=1,MINT(31)
+ I1=IMI(1,IM,1)
+ I2=IMI(2,IM,1)
+ ST=XMI(1,IM)*XMI(2,IM)*VINT(2)+(P(I1,1)+P(I2,1))**2+
+ & (P(I1,2)+P(I2,2))**2
+ PT12=P(I1,1)**2+P(I1,2)**2
+ PT22=P(I2,1)**2+P(I2,2)**2
+C...p_z
+ P(I1,3)=SQRT(FLAM(ST,PT12,PT22)/(4D0*ST))
+ P(I2,3)=-P(I1,3)
+C...Energies (masses should be zero at this stage)
+ P(I1,4)=SQRT(PT12+P(I1,3)**2)
+ P(I2,4)=SQRT(PT22+P(I2,3)**2)
+
+C...Transverse 12 system initiator velocity:
+ VB(1)=(P(I1,1)+P(I2,1))/SQRT(ST)
+ VB(2)=(P(I1,2)+P(I2,2))/SQRT(ST)
+C...Boost to overall initiator system rest frame
+ CALL PYROBO(I1,I1,0D0,0D0,-VB(1),-VB(2),0D0)
+ CALL PYROBO(I2,I2,0D0,0D0,-VB(1),-VB(2),0D0)
+
+C...Compute phi,theta coordinates of I1 and rotate z axis.
+ PHI=PYANGL(P(I1,1),P(I1,2))
+ THE=PYANGL(P(I1,3),SQRT(P(I1,1)**2+P(I1,2)**2))
+ IMIN=IMISEP(IM-1)+1
+C...(include documentation lines if MI = 1)
+ IF (IM.EQ.1) IMIN=MINT(83)+5
+ IMAX=IMISEP(IM)
+C...Rotate entire system in phi
+ CALL PYROBO(IMIN,IMAX,0D0,-PHI,0D0,0D0,0D0)
+C...Only rotate 12 system in theta
+ CALL PYROBO(I1,I1,-THE,0D0,0D0,0D0,0D0)
+ CALL PYROBO(I2,I2,-THE,0D0,0D0,0D0,0D0)
+
+C...Now boost entire system back to LAB
+ VB(3)=(XMI(1,IM)-XMI(2,IM))/(XMI(1,IM)+XMI(2,IM))
+ CALL PYROBO(IMIN,IMAX,THE,PHI,VB(1),VB(2),0D0)
+ CALL PYROBO(IMIN,IMAX,0D0,0D0,0D0,0D0,VB(3))
+
+ 300 CONTINUE
+
+
+C...For the beam remnant partons/hadrons, we only need to set pz and E.
+ DO 320 JS=1,2
+ DO 310 IM=MINT(31)+1,NMI(JS)
+ I=IMI(JS,IM,1)
+C...Skip collapsed gluons and junctions.
+ IF (K(I,2).EQ.21.AND.K(I,1).EQ.14) GOTO 310
+ IF (KFA.EQ.88) GOTO 310
+ RMT2=P(I,5)**2+P(I,1)**2+P(I,2)**2
+ P(I,4)=0.5D0*(XMI(JS,IM)*W(0,JS)+RMT2/(XMI(JS,IM)*W(0,JS)))
+ P(I,3)=0.5D0*(XMI(JS,IM)*W(0,JS)-RMT2/(XMI(JS,IM)*W(0,JS)))
+ IF (JS.EQ.2) P(I,3)=-P(I,3)
+ 310 CONTINUE
+ 320 CONTINUE
+
+
+C...Documentation lines
+ DO 340 JS=1,2
+ IN=MINT(83)+JS+2
+ IO=IMI(JS,1,1)
+ K(IN,1)=21
+ K(IN,2)=K(IO,2)
+ K(IN,3)=MINT(83)+JS
+ K(IN,4)=0
+ K(IN,5)=0
+ DO 330 J=1,5
+ P(IN,J)=P(IO,J)
+ V(IN,J)=V(IO,J)
+ 330 CONTINUE
+ MCT(IN,1)=MCT(IO,1)
+ MCT(IN,2)=MCT(IO,2)
+ 340 CONTINUE
+
+C...Final state colour reconnections.
+ IF (MSTP(95).NE.1.OR.MINT(31).LE.1) GOTO 380
+
+C...Number of colour tags for which a recoupling will be tried.
+ NTOT=NCT
+C...Number of recouplings to try
+ MINT(34)=0
+ NRECP=0
+ NITER=0
+ 350 NRECP=MINT(34)
+ NITER=NITER+1
+ IITER=0
+ 360 IITER=IITER+1
+ IF (IITER.LE.PARP(78)*NTOT) THEN
+C...Select two colour tags at random
+C...NB: jj strings do not have colour tags assigned to them,
+C...thus they are as yet not affected by anything done here.
+ JCT=PYR(0)*NCT+1
+ KCT=MOD(INT(JCT+PYR(0)*NCT),NCT)+1
+ IJ1=0
+ IJ2=0
+ IK1=0
+ IK2=0
+C...Find final state partons with this (anti)colour
+ DO 370 I=MINT(84)+1,N
+ IF (K(I,1).EQ.3) THEN
+ IF (MCT(I,1).EQ.JCT) IJ1=I
+ IF (MCT(I,2).EQ.JCT) IJ2=I
+ IF (MCT(I,1).EQ.KCT) IK1=I
+ IF (MCT(I,2).EQ.KCT) IK2=I
+ ENDIF
+ 370 CONTINUE
+C...Only consider recouplings not involving junctions for now.
+ IF (IJ1.EQ.0.OR.IJ2.EQ.0.OR.IK1.EQ.0.OR.IK2.EQ.0) GOTO 360
+
+ RLO=2D0*FOUR(IJ1,IJ2)*2D0*FOUR(IK1,IK2)
+ RLN=2D0*FOUR(IJ1,IK2)*2D0*FOUR(IK1,IJ2)
+ IF (RLN.LT.RLO.AND.MCT(IJ2,1).NE.KCT.AND.MCT(IK2,1).NE.JCT) THEN
+ MCT(IJ2,2)=KCT
+ MCT(IK2,2)=JCT
+C...Count up number of reconnections
+ MINT(34)=MINT(34)+1
+ ENDIF
+ IF (MINT(34).LE.1000) THEN
+ GOTO 360
+ ELSE
+ CALL PYERRM(4,'(PYMIRM:) caught in infinite loop')
+ GOTO 380
+ ENDIF
+ ENDIF
+ IF (NRECP.LT.MINT(34)) GOTO 350
+
+C...Signal PYPREP to use /PYCTAG/ information rather than K(I,KCS).
+ 380 MINT(33)=1
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYFSCR
+C...Performs colour annealing.
+C...MSTP(95) : CR Type
+C... = 1 : old cut-and-paste reconnections, handled in PYMIHK
+C... = 2 : Type I(no gg loops); hadron-hadron only
+C... = 3 : Type I(no gg loops); all beams
+C... = 4 : Type II(gg loops) ; hadron-hadron only
+C... = 5 : Type II(gg loops) ; all beams
+C... = 6 : Type S ; hadron-hadron only
+C... = 7 : Type S ; all beams
+C...Types I and II are described in Sandhoff+Skands, in hep-ph/0604120.
+C...Type S is driven by starting only from free triplets, not octets.
+C...A string piece remains unchanged with probability
+C... PKEEP = (1-PARP(78))**N
+C...This scaling corresponds to each string piece having to go through
+C...N other ones, each with probability PARP(78) for reconnection, where
+C...N is here chosen simply as the number of multiple interactions,
+C...for a rough scaling with the general level of activity.
+
+ SUBROUTINE PYFSCR(IP)
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYINT1/MINT(400),VINT(400)
+C...The common block of colour tags.
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYINT1/,/PYCTAG/,
+ &/PYPARS/
+C...MCN: Temporary storage of new colour tags
+ DOUBLE PRECISION MCN(4000,2)
+
+C...Function to give four-product.
+ FOUR(I,J)=P(I,4)*P(J,4)
+ & -P(I,1)*P(J,1)-P(I,2)*P(J,2)-P(I,3)*P(J,3)
+
+C...Check valid range of MSTP(95), local copy
+ IF (MSTP(95).LE.1.OR.MSTP(95).GE.8) RETURN
+ MSTP95=MOD(MSTP(95),10)
+C...Set whether CR allowed inside resonance systems or not
+C...(not implemented yet)
+C MRESCR=1
+C IF (MSTP(95).GE.10) MRESCR=0
+
+C...Check whether colour tags already defined
+ IF (MINT(33).EQ.0) THEN
+C...Erase any existing colour tags for this event
+ DO 100 I=1,N
+ MCT(I,1)=0
+ MCT(I,2)=0
+ 100 CONTINUE
+C...Create colour tags for this event
+ DO 120 I=1,N
+ IF (K(I,1).EQ.3) THEN
+ DO 110 KCS=4,5
+ KCSIN=KCS
+ IF (MCT(I,KCSIN-3).EQ.0) THEN
+ CALL PYCTTR(I,KCSIN,I)
+ ENDIF
+ 110 CONTINUE
+ ENDIF
+ 120 CONTINUE
+C...Instruct PYPREP to use colour tags
+ MINT(33)=1
+ ENDIF
+
+C...For MSTP(95) even, only apply to hadron-hadron
+ IF (MOD(MSTP(95),2).EQ.0) THEN
+ KA1=IABS(MINT(11))
+ KA2=IABS(MINT(12))
+ IF (KA1.LT.100.OR.KA2.LT.100) GOTO 9999
+ ENDIF
+
+C...Initialize new tag array (but do not delete old yet)
+ LCT=NCT
+ DO 130 I=MAX(1,IP),N
+ MCN(I,1)=0
+ MCN(I,2)=0
+ 130 CONTINUE
+
+C...For each final-state dipole, check whether string should be
+C...preserved.
+ DO 150 ICT=1,NCT
+ IC=0
+ IA=0
+ DO 140 I=MAX(1,IP),N
+ IF (K(I,1).EQ.3.AND.MCT(I,1).EQ.ICT) IC=I
+ IF (K(I,1).EQ.3.AND.MCT(I,2).EQ.ICT) IA=I
+ 140 CONTINUE
+ IF (IC.NE.0.AND.IA.NE.0) THEN
+C...Chiefly consider large strings.
+ PKEEP=(1D0-PARP(78))**MINT(31)
+ IF (PYR(0).LE.PKEEP) THEN
+ LCT=LCT+1
+ MCN(IC,1)=LCT
+ MCN(IA,2)=LCT
+ ENDIF
+ ENDIF
+ 150 CONTINUE
+
+C...Loop over event record, starting from IP
+C...(Ignore junctions for now.)
+ NLOOP=0
+ 160 NLOOP=NLOOP+1
+ MCIMAX=0
+ MCJMAX=0
+ RLMAX=0D0
+ ILMAX=0
+ JLMAX=0
+ DO 230 I=MAX(1,IP),N
+ IF (K(I,1).NE.3) GOTO 230
+C...Check colour charge
+ MCI=KCHG(PYCOMP(K(I,2)),2)*ISIGN(1,K(I,2))
+ IF (MCI.EQ.0) GOTO 230
+C...For Seattle algorithm, only start from partons with one dangling
+C...colour tag
+ IF (MSTP(95).EQ.6.OR.MSTP(95).EQ.7) THEN
+ IF (MCI.EQ.2.AND.MCN(I,1).EQ.0.AND.MCN(I,2).EQ.0) GOTO 230
+ ENDIF
+C... Find optimal partner
+ JLOPT=0
+ MCJOPT=0
+ MBROPT=0
+ MGGOPT=0
+ RLOPT=1D19
+C...Loop over I colour/anticolour, check whether already connected
+ 170 DO 220 ICL=1,2
+ IF (MCN(I,ICL).NE.0) GOTO 220
+ IF (ICL.EQ.1.AND.MCI.EQ.-1) GOTO 220
+ IF (ICL.EQ.2.AND.MCI.EQ.1) GOTO 220
+C...Check whether this is a dangling colour tag (ie to junction!)
+ IFOUND=0
+ DO 180 J=MAX(1,IP),N
+ IF (K(J,1).EQ.3.AND.MCT(J,3-ICL).EQ.MCT(I,ICL)) IFOUND=1
+ 180 CONTINUE
+ IF (IFOUND.EQ.0) GOTO 220
+ DO 210 J=MAX(1,IP),N
+ IF (K(J,1).NE.3.OR.I.EQ.J) GOTO 210
+C...Do not make direct connections between partons in same Beam Remnant
+ MBRSTR=0
+ IF (K(I,3).LE.2.AND.K(J,3).LE.2.AND.K(I,3).EQ.K(J,3))
+ & MBRSTR=1
+C...Check colour charge
+ MCJ=KCHG(PYCOMP(K(J,2)),2)*ISIGN(1,K(J,2))
+ IF (MCJ.EQ.0.OR.(MCJ.EQ.MCI.AND.MCI.NE.2)) GOTO 210
+C...Check for gluon loops
+ MGGSTR=0
+ IF (MCJ.EQ.2.AND.MCI.EQ.2) THEN
+ ICLA=3-ICL
+ IF (MCN(I,ICLA).EQ.MCN(J,ICL).AND.MSTP(95).LE.3.AND.
+ & MCN(I,ICLA).NE.0) MGGSTR=1
+ ENDIF
+C...Loop over J colour/anticolour, check whether already connected
+ DO 200 JCL=1,2
+ IF (MCN(J,JCL).NE.0) GOTO 200
+ IF (JCL.EQ.ICL) GOTO 200
+ IF (JCL.EQ.1.AND.MCJ.EQ.-1) GOTO 200
+ IF (JCL.EQ.2.AND.MCJ.EQ.1) GOTO 200
+C...Check whether this is a dangling colour tag (ie to junction!)
+ IFOUND=0
+ DO 190 J2=MAX(1,IP),N
+ IF (K(J2,1).EQ.3.AND.MCT(J2,3-JCL).EQ.MCT(J,JCL))
+ & IFOUND=1
+ 190 CONTINUE
+ IF (IFOUND.EQ.0) GOTO 200
+C...Save connection with smallest lambda measure
+C...If best so far was a BR string and this is not, also save.
+C...If best so far was a gg string and this is not, also save.
+ RL=FOUR(I,J)
+ IF (RL.LT.RLOPT.OR.(RL.EQ.RLOPT.AND.PYR(0).LE.0.5D0)
+ & .OR.(MBROPT.EQ.1.AND.MBRSTR.EQ.0)
+ & .OR.(MGGOPT.EQ.1.AND.MGGSTR.EQ.0)) THEN
+ RLOPT=RL
+ JLOPT=J
+ ICOPT=ICL
+ JCOPT=JCL
+ MCJOPT=MCJ
+ MBROPT=MBRSTR
+ MGGOPT=MGGSTR
+ ENDIF
+ 200 CONTINUE
+ 210 CONTINUE
+ 220 CONTINUE
+ IF (JLOPT.NE.0) THEN
+C...Save pair with largest RLOPT so far
+ IF (RLOPT.GE.RLMAX) THEN
+ RLMAX=RLOPT
+ ILMAX=I
+ JLMAX=JLOPT
+ ICMAX=ICOPT
+ JCMAX=JCOPT
+ MCJMAX=MCJOPT
+ MCIMAX=MCI
+ ENDIF
+ ENDIF
+ 230 CONTINUE
+C...Save and iterate
+ IF (ILMAX.GT.0) THEN
+ LCT=LCT+1
+ MCN(ILMAX,ICMAX)=LCT
+ MCN(JLMAX,JCMAX)=LCT
+ IF (NLOOP.LE.2*(N-IP)) THEN
+ GOTO 160
+ ELSE
+ CALL PYERRM(31,' PYFSCR: infinite loop in color annealing')
+ CALL PYSTOP(11)
+ ENDIF
+ ELSE
+C...Save and exit. First check for leftover gluon(s)
+ DO 260 I=MAX(1,IP),N
+C...Check colour charge
+ MCI=KCHG(PYCOMP(K(I,2)),2)*ISIGN(1,K(I,2))
+ IF (K(I,1).NE.3.OR.MCI.NE.2) GOTO 260
+ IF(MCN(I,1).EQ.0.AND.MCN(I,2).EQ.0) THEN
+C...Decide where to put left-over gluon (minimal insertion)
+ ILMAX=0
+ RLMAX=1D19
+ DO 250 KCT=NCT+1,LCT
+ DO 240 IT=MAX(1,IP),N
+ IF (IT.EQ.I.OR.K(IT,1).NE.3) GOTO 240
+ IF (MCN(IT,1).EQ.KCT) IC=IT
+ IF (MCN(IT,2).EQ.KCT) IA=IT
+ 240 CONTINUE
+ RL=FOUR(IC,I)*FOUR(IA,I)
+ IF (RL.LT.RLMAX) THEN
+ RLMAX=RL
+ ICMAX=IC
+ IAMAX=IA
+ ENDIF
+ 250 CONTINUE
+ LCT=LCT+1
+ MCN(I,1)=MCN(ICMAX,1)
+ MCN(I,2)=LCT
+ MCN(ICMAX,1)=LCT
+ ENDIF
+ 260 CONTINUE
+ DO 270 I=MAX(1,IP),N
+C...Do not erase parton shower colour history
+ IF (K(I,1).NE.3) GOTO 270
+C...Check colour charge
+ MCI=KCHG(PYCOMP(K(I,2)),2)*ISIGN(1,K(I,2))
+ IF (MCI.EQ.0) GOTO 270
+ IF (MCN(I,1).NE.0) MCT(I,1)=MCN(I,1)
+ IF (MCN(I,2).NE.0) MCT(I,2)=MCN(I,2)
+ 270 CONTINUE
+ ENDIF
+
+ 9999 RETURN
+ END
+
+C*********************************************************************
+
+C...PYDIFF
+C...Handles diffractive and elastic scattering.
+
+ SUBROUTINE PYDIFF
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYPARS/,/PYINT1/
+
+C...Reset K, P and V vectors. Store incoming particles.
+ DO 110 JT=1,MSTP(126)+10
+ I=MINT(83)+JT
+ DO 100 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+ N=MINT(84)
+ MINT(3)=0
+ MINT(21)=0
+ MINT(22)=0
+ MINT(23)=0
+ MINT(24)=0
+ MINT(4)=4
+ DO 130 JT=1,2
+ I=MINT(83)+JT
+ K(I,1)=21
+ K(I,2)=MINT(10+JT)
+ DO 120 J=1,5
+ P(I,J)=VINT(285+5*JT+J)
+ 120 CONTINUE
+ 130 CONTINUE
+ MINT(6)=2
+
+C...Subprocess; kinematics.
+ SQLAM=(VINT(2)-VINT(63)-VINT(64))**2-4D0*VINT(63)*VINT(64)
+ PZ=SQRT(SQLAM)/(2D0*VINT(1))
+ DO 200 JT=1,2
+ I=MINT(83)+JT
+ PE=(VINT(2)+VINT(62+JT)-VINT(65-JT))/(2D0*VINT(1))
+ KFH=MINT(102+JT)
+
+C...Elastically scattered particle. (Except elastic GVMD states.)
+ IF(MINT(16+JT).LE.0.AND.(MINT(10+JT).NE.22.OR.
+ & MINT(106+JT).NE.3)) THEN
+ N=N+1
+ K(N,1)=1
+ K(N,2)=KFH
+ K(N,3)=I+2
+ P(N,3)=PZ*(-1)**(JT+1)
+ P(N,4)=PE
+ P(N,5)=SQRT(VINT(62+JT))
+
+C...Decay rho from elastic scattering of gamma with sin**2(theta)
+C...distribution of decay products (in rho rest frame).
+ IF(KFH.EQ.113.AND.MINT(10+JT).EQ.22.AND.MSTP(102).EQ.1) THEN
+ NSAV=N
+ DBETAZ=P(N,3)/SQRT(P(N,3)**2+P(N,5)**2)
+ P(N,3)=0D0
+ P(N,4)=P(N,5)
+ CALL PYDECY(NSAV)
+ IF(N.EQ.NSAV+2.AND.IABS(K(NSAV+1,2)).EQ.211) THEN
+ PHI=PYANGL(P(NSAV+1,1),P(NSAV+1,2))
+ CALL PYROBO(NSAV+1,NSAV+2,0D0,-PHI,0D0,0D0,0D0)
+ THE=PYANGL(P(NSAV+1,3),P(NSAV+1,1))
+ CALL PYROBO(NSAV+1,NSAV+2,-THE,0D0,0D0,0D0,0D0)
+ 140 CTHE=2D0*PYR(0)-1D0
+ IF(1D0-CTHE**2.LT.PYR(0)) GOTO 140
+ CALL PYROBO(NSAV+1,NSAV+2,ACOS(CTHE),PHI,0D0,0D0,0D0)
+ ENDIF
+ CALL PYROBO(NSAV,NSAV+2,0D0,0D0,0D0,0D0,DBETAZ)
+ ENDIF
+
+C...Diffracted particle: low-mass system to two particles.
+ ELSEIF(VINT(62+JT).LT.(VINT(66+JT)+PARP(103))**2) THEN
+ N=N+2
+ K(N-1,1)=1
+ K(N,1)=1
+ K(N-1,3)=I+2
+ K(N,3)=I+2
+ PMMAS=SQRT(VINT(62+JT))
+ NTRY=0
+ 150 NTRY=NTRY+1
+ IF(NTRY.LT.20) THEN
+ MINT(105)=MINT(102+JT)
+ MINT(109)=MINT(106+JT)
+ CALL PYSPLI(KFH,21,KFL1,KFL2)
+ CALL PYKFDI(KFL1,0,KFL3,KF1)
+ IF(KF1.EQ.0) GOTO 150
+ CALL PYKFDI(KFL2,-KFL3,KFLDUM,KF2)
+ IF(KF2.EQ.0) GOTO 150
+ ELSE
+ KF1=KFH
+ KF2=111
+ ENDIF
+ PM1=PYMASS(KF1)
+ PM2=PYMASS(KF2)
+ IF(PM1+PM2+PARJ(64).GT.PMMAS) GOTO 150
+ K(N-1,2)=KF1
+ K(N,2)=KF2
+ P(N-1,5)=PM1
+ P(N,5)=PM2
+ PZP=SQRT(MAX(0D0,(PMMAS**2-PM1**2-PM2**2)**2-
+ & 4D0*PM1**2*PM2**2))/(2D0*PMMAS)
+ P(N-1,3)=PZP
+ P(N,3)=-PZP
+ P(N-1,4)=SQRT(PM1**2+PZP**2)
+ P(N,4)=SQRT(PM2**2+PZP**2)
+ CALL PYROBO(N-1,N,ACOS(2D0*PYR(0)-1D0),PARU(2)*PYR(0),
+ & 0D0,0D0,0D0)
+ DBETAZ=PZ*(-1)**(JT+1)/SQRT(PZ**2+PMMAS**2)
+ CALL PYROBO(N-1,N,0D0,0D0,0D0,0D0,DBETAZ)
+
+C...Diffracted particle: valence quark kicked out.
+ ELSEIF(MSTP(101).EQ.1.OR.(MSTP(101).EQ.3.AND.PYR(0).LT.
+ & PARP(101))) THEN
+ N=N+2
+ K(N-1,1)=2
+ K(N,1)=1
+ K(N-1,3)=I+2
+ K(N,3)=I+2
+ MINT(105)=MINT(102+JT)
+ MINT(109)=MINT(106+JT)
+ CALL PYSPLI(KFH,21,K(N,2),K(N-1,2))
+ P(N-1,5)=PYMASS(K(N-1,2))
+ P(N,5)=PYMASS(K(N,2))
+ SQLAM=(VINT(62+JT)-P(N-1,5)**2-P(N,5)**2)**2-
+ & 4D0*P(N-1,5)**2*P(N,5)**2
+ P(N-1,3)=(PE*SQRT(SQLAM)+PZ*(VINT(62+JT)+P(N-1,5)**2-
+ & P(N,5)**2))/(2D0*VINT(62+JT))*(-1)**(JT+1)
+ P(N-1,4)=SQRT(P(N-1,3)**2+P(N-1,5)**2)
+ P(N,3)=PZ*(-1)**(JT+1)-P(N-1,3)
+ P(N,4)=SQRT(P(N,3)**2+P(N,5)**2)
+
+C...Diffracted particle: gluon kicked out.
+ ELSE
+ N=N+3
+ K(N-2,1)=2
+ K(N-1,1)=2
+ K(N,1)=1
+ K(N-2,3)=I+2
+ K(N-1,3)=I+2
+ K(N,3)=I+2
+ MINT(105)=MINT(102+JT)
+ MINT(109)=MINT(106+JT)
+ CALL PYSPLI(KFH,21,K(N,2),K(N-2,2))
+ K(N-1,2)=21
+ P(N-2,5)=PYMASS(K(N-2,2))
+ P(N-1,5)=0D0
+ P(N,5)=PYMASS(K(N,2))
+C...Energy distribution for particle into two jets.
+ 160 IMB=1
+ IF(MOD(KFH/1000,10).NE.0) IMB=2
+ CHIK=PARP(92+2*IMB)
+ IF(MSTP(92).LE.1) THEN
+ IF(IMB.EQ.1) CHI=PYR(0)
+ IF(IMB.EQ.2) CHI=1D0-SQRT(PYR(0))
+ ELSEIF(MSTP(92).EQ.2) THEN
+ CHI=1D0-PYR(0)**(1D0/(1D0+CHIK))
+ ELSEIF(MSTP(92).EQ.3) THEN
+ CUT=2D0*0.3D0/VINT(1)
+ 170 CHI=PYR(0)**2
+ IF((CHI**2/(CHI**2+CUT**2))**0.25D0*(1D0-CHI)**CHIK.LT.
+ & PYR(0)) GOTO 170
+ ELSEIF(MSTP(92).EQ.4) THEN
+ CUT=2D0*0.3D0/VINT(1)
+ CUTR=(1D0+SQRT(1D0+CUT**2))/CUT
+ 180 CHIR=CUT*CUTR**PYR(0)
+ CHI=(CHIR**2-CUT**2)/(2D0*CHIR)
+ IF((1D0-CHI)**CHIK.LT.PYR(0)) GOTO 180
+ ELSE
+ CUT=2D0*0.3D0/VINT(1)
+ CUTA=CUT**(1D0-PARP(98))
+ CUTB=(1D0+CUT)**(1D0-PARP(98))
+ 190 CHI=(CUTA+PYR(0)*(CUTB-CUTA))**(1D0/(1D0-PARP(98)))
+ IF(((CHI+CUT)**2/(2D0*(CHI**2+CUT**2)))**
+ & (0.5D0*PARP(98))*(1D0-CHI)**CHIK.LT.PYR(0)) GOTO 190
+ ENDIF
+ IF(CHI.LT.P(N,5)**2/VINT(62+JT).OR.CHI.GT.1D0-P(N-2,5)**2/
+ & VINT(62+JT)) GOTO 160
+ SQM=P(N-2,5)**2/(1D0-CHI)+P(N,5)**2/CHI
+ PZI=(PE*(VINT(62+JT)-SQM)+PZ*(VINT(62+JT)+SQM))/
+ & (2D0*VINT(62+JT))
+ PEI=SQRT(PZI**2+SQM)
+ PQQP=(1D0-CHI)*(PEI+PZI)
+ P(N-2,3)=0.5D0*(PQQP-P(N-2,5)**2/PQQP)*(-1)**(JT+1)
+ P(N-2,4)=SQRT(P(N-2,3)**2+P(N-2,5)**2)
+ P(N-1,4)=0.5D0*(VINT(62+JT)-SQM)/(PEI+PZI)
+ P(N-1,3)=P(N-1,4)*(-1)**JT
+ P(N,3)=PZI*(-1)**(JT+1)-P(N-2,3)
+ P(N,4)=SQRT(P(N,3)**2+P(N,5)**2)
+ ENDIF
+
+C...Documentation lines.
+ K(I+2,1)=21
+ IF(MINT(16+JT).EQ.0) K(I+2,2)=KFH
+ IF(MINT(16+JT).NE.0.OR.(MINT(10+JT).EQ.22.AND.
+ & MINT(106+JT).EQ.3)) K(I+2,2)=ISIGN(9900000,KFH)+10*(KFH/10)
+ K(I+2,3)=I
+ P(I+2,3)=PZ*(-1)**(JT+1)
+ P(I+2,4)=PE
+ P(I+2,5)=SQRT(VINT(62+JT))
+ 200 CONTINUE
+
+C...Rotate outgoing partons/particles using cos(theta).
+ IF(VINT(23).LT.0.9D0) THEN
+ CALL PYROBO(MINT(83)+3,N,ACOS(VINT(23)),VINT(24),0D0,0D0,0D0)
+ ELSE
+ CALL PYROBO(MINT(83)+3,N,ASIN(VINT(59)),VINT(24),0D0,0D0,0D0)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYDISG
+C...Set up a DIS process as gamma* + f -> f, with beam remnant
+C...and showering added consecutively. Photon flux by the PYGAGA
+C...routine (if at all).
+
+ SUBROUTINE PYDISG
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYSUBS/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION PMS(4)
+
+C...Choice of subprocess, number of documentation lines
+ IDOC=7
+ MINT(3)=IDOC-6
+ MINT(4)=IDOC
+ IPU1=MINT(84)+1
+ IPU2=MINT(84)+2
+ IPU3=MINT(84)+3
+ ISIDE=1
+ IF(MINT(107).EQ.4) ISIDE=2
+
+C...Reset K, P and V vectors. Store incoming particles
+ DO 110 JT=1,MSTP(126)+20
+ I=MINT(83)+JT
+ DO 100 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+ DO 130 JT=1,2
+ I=MINT(83)+JT
+ K(I,1)=21
+ K(I,2)=MINT(10+JT)
+ DO 120 J=1,5
+ P(I,J)=VINT(285+5*JT+J)
+ 120 CONTINUE
+ 130 CONTINUE
+ MINT(6)=2
+
+C...Store incoming partons in hadronic CM-frame
+ DO 140 JT=1,2
+ I=MINT(84)+JT
+ K(I,1)=14
+ K(I,2)=MINT(14+JT)
+ K(I,3)=MINT(83)+2+JT
+ 140 CONTINUE
+ IF(MINT(15).EQ.22) THEN
+ P(MINT(84)+1,3)=0.5D0*(VINT(1)+VINT(307)/VINT(1))
+ P(MINT(84)+1,4)=0.5D0*(VINT(1)-VINT(307)/VINT(1))
+ P(MINT(84)+1,5)=-SQRT(VINT(307))
+ P(MINT(84)+2,3)=-0.5D0*VINT(307)/VINT(1)
+ P(MINT(84)+2,4)=0.5D0*VINT(307)/VINT(1)
+ KFRES=MINT(16)
+ ISIDE=2
+ ELSE
+ P(MINT(84)+1,3)=0.5D0*VINT(308)/VINT(1)
+ P(MINT(84)+1,4)=0.5D0*VINT(308)/VINT(1)
+ P(MINT(84)+2,3)=-0.5D0*(VINT(1)+VINT(308)/VINT(1))
+ P(MINT(84)+2,4)=0.5D0*(VINT(1)-VINT(308)/VINT(1))
+ P(MINT(84)+1,5)=-SQRT(VINT(308))
+ KFRES=MINT(15)
+ ISIDE=1
+ ENDIF
+ SIDESG=(-1D0)**(ISIDE-1)
+
+C...Copy incoming partons to documentation lines.
+ DO 170 JT=1,2
+ I1=MINT(83)+4+JT
+ I2=MINT(84)+JT
+ K(I1,1)=21
+ K(I1,2)=K(I2,2)
+ K(I1,3)=I1-2
+ DO 150 J=1,5
+ P(I1,J)=P(I2,J)
+ 150 CONTINUE
+
+C...Second copy for partons before ISR shower, since no such.
+ I1=MINT(83)+2+JT
+ K(I1,1)=21
+ K(I1,2)=K(I2,2)
+ K(I1,3)=I1-2
+ DO 160 J=1,5
+ P(I1,J)=P(I2,J)
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...Define initial partons.
+ NTRY=0
+ 180 NTRY=NTRY+1
+ IF(NTRY.GT.100) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Scattered quark in hadronic CM frame.
+ I=MINT(83)+7
+ K(IPU3,1)=3
+ K(IPU3,2)=KFRES
+ K(IPU3,3)=I
+ P(IPU3,5)=PYMASS(KFRES)
+ P(IPU3,3)=P(IPU1,3)+P(IPU2,3)
+ P(IPU3,4)=P(IPU1,4)+P(IPU2,4)
+ P(IPU3,5)=0D0
+ K(I,1)=21
+ K(I,2)=KFRES
+ K(I,3)=MINT(83)+4+ISIDE
+ P(I,3)=P(IPU3,3)
+ P(I,4)=P(IPU3,4)
+ P(I,5)=P(IPU3,5)
+ N=IPU3
+ MINT(21)=KFRES
+ MINT(22)=0
+
+C...No primordial kT, or chosen according to truncated Gaussian or
+C...exponential, or (for photon) predetermined or power law.
+ 190 IF(MINT(40+ISIDE).EQ.2.AND.MINT(10+ISIDE).NE.22) THEN
+ IF(MSTP(91).LE.0) THEN
+ PT=0D0
+ ELSEIF(MSTP(91).EQ.1) THEN
+ PT=PARP(91)*SQRT(-LOG(PYR(0)))
+ ELSE
+ RPT1=PYR(0)
+ RPT2=PYR(0)
+ PT=-PARP(92)*LOG(RPT1*RPT2)
+ ENDIF
+ IF(PT.GT.PARP(93)) GOTO 190
+ ELSEIF(MINT(106+ISIDE).EQ.3) THEN
+ PTA=SQRT(VINT(282+ISIDE))
+ PTB=0D0
+ IF(MSTP(66).EQ.5.AND.MSTP(93).EQ.1) THEN
+ PTB=PARP(99)*SQRT(-LOG(PYR(0)))
+ ELSEIF(MSTP(66).EQ.5.AND.MSTP(93).EQ.2) THEN
+ RPT1=PYR(0)
+ RPT2=PYR(0)
+ PTB=-PARP(99)*LOG(RPT1*RPT2)
+ ENDIF
+ IF(PTB.GT.PARP(100)) GOTO 190
+ PT=SQRT(PTA**2+PTB**2+2D0*PTA*PTB*COS(PARU(2)*PYR(0)))
+ IF(NTRY.GT.10) PT=PT*0.8D0**(NTRY-10)
+ ELSEIF(IABS(MINT(14+ISIDE)).LE.8.OR.MINT(14+ISIDE).EQ.21) THEN
+ IF(MSTP(93).LE.0) THEN
+ PT=0D0
+ ELSEIF(MSTP(93).EQ.1) THEN
+ PT=PARP(99)*SQRT(-LOG(PYR(0)))
+ ELSEIF(MSTP(93).EQ.2) THEN
+ RPT1=PYR(0)
+ RPT2=PYR(0)
+ PT=-PARP(99)*LOG(RPT1*RPT2)
+ ELSEIF(MSTP(93).EQ.3) THEN
+ HA=PARP(99)**2
+ HB=PARP(100)**2
+ PT=SQRT(MAX(0D0,HA*(HA+HB)/(HA+HB-PYR(0)*HB)-HA))
+ ELSE
+ HA=PARP(99)**2
+ HB=PARP(100)**2
+ IF(MSTP(93).EQ.5) HB=MIN(VINT(48),PARP(100)**2)
+ PT=SQRT(MAX(0D0,HA*((HA+HB)/HA)**PYR(0)-HA))
+ ENDIF
+ IF(PT.GT.PARP(100)) GOTO 190
+ ELSE
+ PT=0D0
+ ENDIF
+ VINT(156+ISIDE)=PT
+ PHI=PARU(2)*PYR(0)
+ P(IPU3,1)=PT*COS(PHI)
+ P(IPU3,2)=PT*SIN(PHI)
+ P(IPU3,4)=SQRT(P(IPU3,5)**2+PT**2+P(IPU3,3)**2)
+ PMS(3-ISIDE)=P(IPU3,5)**2+P(IPU3,1)**2+P(IPU3,2)**2
+ PCP=P(IPU3,4)+ABS(P(IPU3,3))
+
+C...Find one or two beam remnants.
+ MINT(105)=MINT(102+ISIDE)
+ MINT(109)=MINT(106+ISIDE)
+ CALL PYSPLI(MINT(10+ISIDE),MINT(12+ISIDE),KFLCH,KFLSP)
+ IF(MINT(51).NE.0) THEN
+ MINT(51)=0
+ GOTO 180
+ ENDIF
+
+C...Store first remnant parton, with colour info and kinematics.
+ I=N+1
+ K(I,1)=1
+ K(I,2)=KFLSP
+ K(I,3)=MINT(83)+ISIDE
+ P(I,5)=PYMASS(K(I,2))
+ KCOL=KCHG(PYCOMP(KFLSP),2)
+ IF(KCOL.NE.0) THEN
+ K(I,1)=3
+ KFLS=(3-KCOL*ISIGN(1,KFLSP))/2
+ K(I,KFLS+3)=MSTU(5)*IPU3
+ K(IPU3,6-KFLS)=MSTU(5)*I
+ ICOLR=I
+ ENDIF
+ IF(KFLCH.EQ.0) THEN
+ P(I,1)=-P(IPU3,1)
+ P(I,2)=-P(IPU3,2)
+ PMS(ISIDE)=P(I,5)**2+P(I,1)**2+P(I,2)**2
+ P(I,3)=-P(IPU3,3)
+ P(I,4)=SQRT(PMS(ISIDE)+P(I,3)**2)
+ PRP=P(I,4)+ABS(P(I,3))
+
+C...When extra remnant parton or hadron: store extra remnant.
+ ELSE
+ I=I+1
+ K(I,1)=1
+ K(I,2)=KFLCH
+ K(I,3)=MINT(83)+ISIDE
+ P(I,5)=PYMASS(K(I,2))
+ KCOL=KCHG(PYCOMP(KFLCH),2)
+ IF(KCOL.NE.0) THEN
+ K(I,1)=3
+ KFLS=(3-KCOL*ISIGN(1,KFLCH))/2
+ K(I,KFLS+3)=MSTU(5)*IPU3
+ K(IPU3,6-KFLS)=MSTU(5)*I
+ ICOLR=I
+ ENDIF
+
+C...Relative transverse momentum when two remnants.
+ LOOP=0
+ 200 LOOP=LOOP+1
+ CALL PYPTDI(1,P(I-1,1),P(I-1,2))
+ P(I-1,1)=P(I-1,1)-0.5D0*P(IPU3,1)
+ P(I-1,2)=P(I-1,2)-0.5D0*P(IPU3,2)
+ PMS(3)=P(I-1,5)**2+P(I-1,1)**2+P(I-1,2)**2
+ P(I,1)=-P(IPU3,1)-P(I-1,1)
+ P(I,2)=-P(IPU3,2)-P(I-1,2)
+ PMS(4)=P(I,5)**2+P(I,1)**2+P(I,2)**2
+
+C...Relative distribution of energy for particle into jet plus particle.
+ IMB=1
+ IF(MOD(MINT(10+ISIDE)/1000,10).NE.0) IMB=2
+ IF(MSTP(94).LE.1) THEN
+ IF(IMB.EQ.1) CHI=PYR(0)
+ IF(IMB.EQ.2) CHI=1D0-SQRT(PYR(0))
+ IF(MOD(KFLCH/1000,10).NE.0) CHI=1D0-CHI
+ ELSEIF(MSTP(94).EQ.2) THEN
+ CHI=1D0-PYR(0)**(1D0/(1D0+PARP(93+2*IMB)))
+ IF(MOD(KFLCH/1000,10).NE.0) CHI=1D0-CHI
+ ELSEIF(MSTP(94).EQ.3) THEN
+ CALL PYZDIS(1,0,PMS(4),ZZ)
+ CHI=ZZ
+ ELSE
+ CALL PYZDIS(1000,0,PMS(4),ZZ)
+ CHI=ZZ
+ ENDIF
+
+C...Construct total transverse mass; reject if too large.
+ CHI=MAX(1D-8,MIN(1D0-1D-8,CHI))
+ PMS(ISIDE)=PMS(4)/CHI+PMS(3)/(1D0-CHI)
+ IF(PMS(ISIDE).GT.P(IPU3,4)**2) THEN
+ IF(LOOP.LT.10) GOTO 200
+ GOTO 180
+ ENDIF
+ VINT(158+ISIDE)=CHI
+
+C...Subdivide longitudinal momentum according to value selected above.
+ PRP=SQRT(PMS(ISIDE)+P(IPU3,3)**2)+ABS(P(IPU3,3))
+ PW1=(1D0-CHI)*PRP
+ P(I-1,4)=0.5D0*(PW1+PMS(3)/PW1)
+ P(I-1,3)=0.5D0*(PW1-PMS(3)/PW1)*SIDESG
+ PW2=CHI*PRP
+ P(I,4)=0.5D0*(PW2+PMS(4)/PW2)
+ P(I,3)=0.5D0*(PW2-PMS(4)/PW2)*SIDESG
+ ENDIF
+ N=I
+
+C...Boost current and remnant systems to correct frame.
+ IF(SQRT(PMS(1))+SQRT(PMS(2)).GT.0.99D0*VINT(1)) GOTO 180
+ DSQLAM=SQRT(MAX(0D0,(VINT(2)-PMS(1)-PMS(2))**2-4D0*PMS(1)*PMS(2)))
+ DRKC=(VINT(2)+PMS(3-ISIDE)-PMS(ISIDE)+DSQLAM)/
+ &(2D0*VINT(1)*PCP)
+ DRKR=(VINT(2)+PMS(ISIDE)-PMS(3-ISIDE)+DSQLAM)/
+ &(2D0*VINT(1)*PRP)
+ DBEC=-SIDESG*(DRKC**2-1D0)/(DRKC**2+1D0)
+ DBER=SIDESG*(DRKR**2-1D0)/(DRKR**2+1D0)
+ CALL PYROBO(IPU3,IPU3,0D0,0D0,0D0,0D0,DBEC)
+ CALL PYROBO(IPU3+1,N,0D0,0D0,0D0,0D0,DBER)
+
+C...Let current quark shower; recoil but no showering by colour partner.
+ QMAX=2D0*SQRT(VINT(309-ISIDE))
+ MSTJ48=MSTJ(48)
+ MSTJ(48)=1
+ PARJ86=PARJ(86)
+ PARJ(86)=0D0
+ IF(MSTP(71).EQ.1) then
+ if(parj(200).ne.1.) CALL PYSHOW(IPU3,ICOLR,QMAX)
+ if(parj(200).eq.1.) CALL PYSHOWQ(IPU3,ICOLR,QMAX)
+ endif
+ MSTJ(48)=MSTJ48
+ PARJ(86)=PARJ86
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYDOCU
+C...Handles the documentation of the process in MSTI and PARI,
+C...and also computes cross-sections based on accumulated statistics.
+
+ SUBROUTINE PYDOCU
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ SAVE /PYJETS/,/PYDAT1/,/PYSUBS/,/PYPARS/,/PYINT1/,/PYINT2/,
+ &/PYINT5/
+
+C...Calculate Monte Carlo estimates of cross-sections.
+ ISUB=MINT(1)
+ IF(MSTP(111).NE.-1) NGEN(ISUB,3)=NGEN(ISUB,3)+1
+ NGEN(0,3)=NGEN(0,3)+1
+ XSEC(0,3)=0D0
+ DO 100 I=1,500
+ IF(I.EQ.96.OR.I.EQ.97) THEN
+ XSEC(I,3)=0D0
+ ELSEIF(MSUB(95).EQ.1.AND.(I.EQ.11.OR.I.EQ.12.OR.I.EQ.13.OR.
+ & I.EQ.28.OR.I.EQ.53.OR.I.EQ.68)) THEN
+ XSEC(I,3)=XSEC(96,2)*NGEN(I,3)/MAX(1D0,DBLE(NGEN(96,1))*
+ & DBLE(NGEN(96,2)))
+ ELSEIF(MSUB(95).EQ.1.AND.I.GE.381.AND.I.LE.386) THEN
+ XSEC(I,3)=XSEC(96,2)*NGEN(I,3)/MAX(1D0,DBLE(NGEN(96,1))*
+ & DBLE(NGEN(96,2)))
+ ELSEIF(MSUB(I).EQ.0.OR.NGEN(I,1).EQ.0) THEN
+ XSEC(I,3)=0D0
+ ELSEIF(NGEN(I,2).EQ.0) THEN
+ XSEC(I,3)=XSEC(I,2)*NGEN(0,3)/(DBLE(NGEN(I,1))*
+ & DBLE(NGEN(0,2)))
+ ELSE
+ XSEC(I,3)=XSEC(I,2)*NGEN(I,3)/(DBLE(NGEN(I,1))*
+ & DBLE(NGEN(I,2)))
+ ENDIF
+ XSEC(0,3)=XSEC(0,3)+XSEC(I,3)
+ 100 CONTINUE
+
+C...Rescale to known low-pT cross-section for standard QCD processes.
+ IF(MSUB(95).EQ.1) THEN
+ XSECH=XSEC(11,3)+XSEC(12,3)+XSEC(13,3)+XSEC(28,3)+XSEC(53,3)+
+ & XSEC(68,3)+XSEC(95,3)
+ XSECW=XSEC(97,2)/MAX(1D0,DBLE(NGEN(97,1)))
+ IF(XSECH.GT.1D-20.AND.XSECW.GT.1D-20) THEN
+ FAC=XSECW/XSECH
+ XSEC(11,3)=FAC*XSEC(11,3)
+ XSEC(12,3)=FAC*XSEC(12,3)
+ XSEC(13,3)=FAC*XSEC(13,3)
+ XSEC(28,3)=FAC*XSEC(28,3)
+ XSEC(53,3)=FAC*XSEC(53,3)
+ XSEC(68,3)=FAC*XSEC(68,3)
+ XSEC(95,3)=FAC*XSEC(95,3)
+ XSEC(0,3)=XSEC(0,3)-XSECH+XSECW
+ ENDIF
+ ENDIF
+
+C...Save information for gamma-p and gamma-gamma.
+ IF(MINT(121).GT.1) THEN
+ IGA=MINT(122)
+ CALL PYSAVE(2,IGA)
+ CALL PYSAVE(5,0)
+ ENDIF
+
+C...Reset information on hard interaction.
+ DO 110 J=1,200
+ MSTI(J)=0
+ PARI(J)=0D0
+ 110 CONTINUE
+
+C...Copy integer valued information from MINT into MSTI.
+ DO 120 J=1,32
+ MSTI(J)=MINT(J)
+ 120 CONTINUE
+ IF(MINT(121).GT.1) MSTI(9)=MINT(122)
+
+C...Store cross-section variables in PARI.
+ PARI(1)=XSEC(0,3)
+ PARI(2)=XSEC(0,3)/MINT(5)
+ PARI(7)=VINT(97)
+ PARI(9)=VINT(99)
+ PARI(10)=VINT(100)
+ VINT(98)=VINT(98)+VINT(100)
+ IF(MSTP(142).EQ.1) PARI(2)=XSEC(0,3)/VINT(98)
+
+C...Store kinematics variables in PARI.
+ PARI(11)=VINT(1)
+ PARI(12)=VINT(2)
+ IF(ISUB.NE.95) THEN
+ DO 130 J=13,26
+ PARI(J)=VINT(30+J)
+ 130 CONTINUE
+ PARI(29)=VINT(39)
+ PARI(30)=VINT(40)
+ PARI(31)=VINT(141)
+ PARI(32)=VINT(142)
+ PARI(33)=VINT(41)
+ PARI(34)=VINT(42)
+ PARI(35)=PARI(33)-PARI(34)
+ PARI(36)=VINT(21)
+ PARI(37)=VINT(22)
+ PARI(38)=VINT(26)
+ PARI(39)=VINT(157)
+ PARI(40)=VINT(158)
+ PARI(41)=VINT(23)
+ PARI(42)=2D0*VINT(47)/VINT(1)
+ ENDIF
+
+C...Store information on scattered partons in PARI.
+ IF(ISUB.NE.95.AND.MINT(7)*MINT(8).NE.0) THEN
+ DO 140 IS=7,8
+ I=MINT(IS)
+ PARI(36+IS)=P(I,3)/VINT(1)
+ PARI(38+IS)=P(I,4)/VINT(1)
+ PR=MAX(1D-20,P(I,5)**2+P(I,1)**2+P(I,2)**2)
+ PARI(40+IS)=SIGN(LOG(MIN((SQRT(PR+P(I,3)**2)+ABS(P(I,3)))/
+ & SQRT(PR),1D20)),P(I,3))
+ PR=MAX(1D-20,P(I,1)**2+P(I,2)**2)
+ PARI(42+IS)=SIGN(LOG(MIN((SQRT(PR+P(I,3)**2)+ABS(P(I,3)))/
+ & SQRT(PR),1D20)),P(I,3))
+ PARI(44+IS)=P(I,3)/SQRT(1D-20+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ PARI(46+IS)=PYANGL(P(I,3),SQRT(P(I,1)**2+P(I,2)**2))
+ PARI(48+IS)=PYANGL(P(I,1),P(I,2))
+ 140 CONTINUE
+ ENDIF
+
+C...Store sum up transverse and longitudinal momenta.
+ PARI(65)=2D0*PARI(17)
+ IF(ISUB.LE.90.OR.ISUB.GE.95) THEN
+ DO 150 I=MSTP(126)+1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 150
+ PT=SQRT(P(I,1)**2+P(I,2)**2)
+ PARI(69)=PARI(69)+PT
+ IF(I.LE.MINT(52)) PARI(66)=PARI(66)+PT
+ IF(I.GT.MINT(52).AND.I.LE.MINT(53)) PARI(68)=PARI(68)+PT
+ 150 CONTINUE
+ PARI(67)=PARI(68)
+ PARI(71)=VINT(151)
+ PARI(72)=VINT(152)
+ PARI(73)=VINT(151)
+ PARI(74)=VINT(152)
+ ELSE
+ PARI(66)=PARI(65)
+ PARI(69)=PARI(65)
+ ENDIF
+
+C...Store various other pieces of information into PARI.
+ PARI(61)=VINT(148)
+ PARI(75)=VINT(155)
+ PARI(76)=VINT(156)
+ PARI(77)=VINT(159)
+ PARI(78)=VINT(160)
+ PARI(81)=VINT(138)
+
+C...Store information on lepton -> lepton + gamma in PYGAGA.
+ MSTI(71)=MINT(141)
+ MSTI(72)=MINT(142)
+ PARI(101)=VINT(301)
+ PARI(102)=VINT(302)
+ DO 160 I=103,114
+ PARI(I)=VINT(I+202)
+ 160 CONTINUE
+
+C...Set information for PYTABU.
+ IF(ISET(ISUB).EQ.1.OR.ISET(ISUB).EQ.3) THEN
+ MSTU(161)=MINT(21)
+ MSTU(162)=0
+ ELSEIF(ISET(ISUB).EQ.5) THEN
+ MSTU(161)=MINT(23)
+ MSTU(162)=0
+ ELSE
+ MSTU(161)=MINT(21)
+ MSTU(162)=MINT(22)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYFRAM
+C...Performs transformations between different coordinate frames.
+
+ SUBROUTINE PYFRAM(IFRAME)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYPARS/,/PYINT1/
+
+C...Check that transformation can and should be done.
+ IF(IFRAME.EQ.1.OR.IFRAME.EQ.2.OR.(IFRAME.EQ.3.AND.
+ &MINT(91).EQ.1)) THEN
+ IF(IFRAME.EQ.MINT(6)) RETURN
+ ELSE
+ WRITE(MSTU(11),5000) IFRAME,MINT(6)
+ RETURN
+ ENDIF
+
+ IF(MINT(6).EQ.1) THEN
+C...Transform from fixed target or user specified frame to
+C...overall CM frame.
+ CALL PYROBO(0,0,0D0,0D0,-VINT(8),-VINT(9),-VINT(10))
+ CALL PYROBO(0,0,0D0,-VINT(7),0D0,0D0,0D0)
+ CALL PYROBO(0,0,-VINT(6),0D0,0D0,0D0,0D0)
+ ELSEIF(MINT(6).EQ.3) THEN
+C...Transform from hadronic CM frame in DIS to overall CM frame.
+ CALL PYROBO(0,0,-VINT(221),-VINT(222),-VINT(223),-VINT(224),
+ & -VINT(225))
+ ENDIF
+
+ IF(IFRAME.EQ.1) THEN
+C...Transform from overall CM frame to fixed target or user specified
+C...frame.
+ CALL PYROBO(0,0,VINT(6),VINT(7),VINT(8),VINT(9),VINT(10))
+ ELSEIF(IFRAME.EQ.3) THEN
+C...Transform from overall CM frame to hadronic CM frame in DIS.
+ CALL PYROBO(0,0,0D0,0D0,VINT(223),VINT(224),VINT(225))
+ CALL PYROBO(0,0,0D0,VINT(222),0D0,0D0,0D0)
+ CALL PYROBO(0,0,VINT(221),0D0,0D0,0D0,0D0)
+ ENDIF
+
+C...Set information about new frame.
+ MINT(6)=IFRAME
+ MSTI(6)=IFRAME
+
+ 5000 FORMAT(1X,'Error: illegal values in subroutine PYFRAM.',1X,
+ &'No transformation performed.'/1X,'IFRAME =',1X,I5,'; MINT(6) =',
+ &1X,I5)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYWIDT
+C...Calculates full and partial widths of resonances.
+
+ SUBROUTINE PYWIDT(KFLR,SH,WDTP,WDTE)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT4/,/PYMSSM/,/PYSSMT/,/PYTCSM/
+C...Local arrays and saved variables.
+ COMPLEX*16 ZMIXC(4,4),AL,BL,AR,BR,FL,FR
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5),MOFSV(3,2),WIDWSV(3,2),
+ &WID2SV(3,2),WDTPP(0:400),WDTEP(0:400,0:5)
+ SAVE MOFSV,WIDWSV,WID2SV
+ DATA MOFSV/6*0/,WIDWSV/6*0D0/,WID2SV/6*0D0/
+
+C...Compressed code and sign; mass.
+ KFLA=IABS(KFLR)
+ KFLS=ISIGN(1,KFLR)
+ KC=PYCOMP(KFLA)
+ SHR=SQRT(SH)
+ PMR=PMAS(KC,1)
+
+C...Reset width information.
+ DO 110 I=0,MDCY(KC,3)
+ WDTP(I)=0D0
+ DO 100 J=0,5
+ WDTE(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...Allow for fudge factor to rescale resonance width.
+ FUDGE=1D0
+ IF(MSTP(110).NE.0.AND.(MWID(KC).EQ.1.OR.MWID(KC).EQ.2.OR.
+ &(MWID(KC).EQ.3.AND.MINT(63).EQ.1))) THEN
+ IF(MSTP(110).EQ.KFLA) THEN
+ FUDGE=PARP(110)
+ ELSEIF(MSTP(110).EQ.-1) THEN
+ IF(KFLA.NE.6.AND.KFLA.NE.23.AND.KFLA.NE.24) FUDGE=PARP(110)
+ ELSEIF(MSTP(110).EQ.-2) THEN
+ FUDGE=PARP(110)
+ ENDIF
+ ENDIF
+
+C...Not to be treated as a resonance: return.
+ IF((MWID(KC).LE.0.OR.MWID(KC).GE.4).AND.KFLA.NE.21.AND.
+ &KFLA.NE.22) THEN
+ WDTP(0)=1D0
+ WDTE(0,0)=1D0
+ MINT(61)=0
+ MINT(62)=0
+ MINT(63)=0
+ RETURN
+
+C...Treatment as a resonance based on tabulated branching ratios.
+ ELSEIF(MWID(KC).EQ.2.OR.(MWID(KC).EQ.3.AND.MINT(63).EQ.0)) THEN
+C...Loop over possible decay channels; skip irrelevant ones.
+ DO 120 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 120
+
+C...Read out decay products and nominal masses.
+ KFD1=KFDP(IDC,1)
+ KFC1=PYCOMP(KFD1)
+ IF(KCHG(KFC1,3).EQ.1) KFD1=KFLS*KFD1
+ PM1=PMAS(KFC1,1)
+ KFD2=KFDP(IDC,2)
+ KFC2=PYCOMP(KFD2)
+ IF(KCHG(KFC2,3).EQ.1) KFD2=KFLS*KFD2
+ PM2=PMAS(KFC2,1)
+ KFD3=KFDP(IDC,3)
+ PM3=0D0
+ IF(KFD3.NE.0) THEN
+ KFC3=PYCOMP(KFD3)
+ IF(KCHG(KFC3,3).EQ.1) KFD3=KFLS*KFD3
+ PM3=PMAS(KFC3,1)
+ ENDIF
+
+C...Naive partial width and alternative threshold factors.
+ WDTP(I)=PMAS(KC,2)*BRAT(IDC)*(SHR/PMR)
+ IF(MDME(IDC,2).GE.51.AND.MDME(IDC,2).LE.53.AND.
+ & PM1+PM2+PM3.GE.SHR) THEN
+ WDTP(I)=0D0
+ ELSEIF(MDME(IDC,2).EQ.52.AND.KFD3.EQ.0) THEN
+ WDTP(I)=WDTP(I)*SQRT(MAX(0D0,(SH-PM1**2-PM2**2)**2-
+ & 4D0*PM1**2*PM2**2))/SH
+ ELSEIF(MDME(IDC,2).EQ.52) THEN
+ PMA=MAX(PM1,PM2,PM3)
+ PMC=MIN(PM1,PM2,PM3)
+ PMB=PM1+PM2+PM3-PMA-PMC
+ PMBC=PMB+PMC+0.5D0*(SHR-PMA-PMC-PMC)
+ PMAN=PMA**2/SH
+ PMBN=PMB**2/SH
+ PMCN=PMC**2/SH
+ PMBCN=PMBC**2/SH
+ WDTP(I)=WDTP(I)*SQRT(MAX(0D0,
+ & ((1D0-PMAN-PMBCN)**2-4D0*PMAN*PMBCN)*
+ & ((PMBCN-PMBN-PMCN)**2-4D0*PMBN*PMCN)))*
+ & ((SHR-PMA)**2-(PMB+PMC)**2)*
+ & (1D0+0.25D0*(PMA+PMB+PMC)/SHR)/
+ & ((1D0-PMBCN)*PMBCN*SH)
+ ELSEIF(MDME(IDC,2).EQ.53.AND.KFD3.EQ.0) THEN
+ WDTP(I)=WDTP(I)*SQRT(
+ & MAX(0D0,(SH-PM1**2-PM2**2)**2-4D0*PM1**2*PM2**2)/
+ & MAX(1D-4,(PMR**2-PM1**2-PM2**2)**2-4D0*PM1**2*PM2**2))
+ ELSEIF(MDME(IDC,2).EQ.53) THEN
+ PMA=MAX(PM1,PM2,PM3)
+ PMC=MIN(PM1,PM2,PM3)
+ PMB=PM1+PM2+PM3-PMA-PMC
+ PMBC=PMB+PMC+0.5D0*(SHR-PMA-PMB-PMC)
+ PMAN=PMA**2/SH
+ PMBN=PMB**2/SH
+ PMCN=PMC**2/SH
+ PMBCN=PMBC**2/SH
+ FACACT=SQRT(MAX(0D0,
+ & ((1D0-PMAN-PMBCN)**2-4D0*PMAN*PMBCN)*
+ & ((PMBCN-PMBN-PMCN)**2-4D0*PMBN*PMCN)))*
+ & ((SHR-PMA)**2-(PMB+PMC)**2)*
+ & (1D0+0.25D0*(PMA+PMB+PMC)/SHR)/
+ & ((1D0-PMBCN)*PMBCN*SH)
+ PMBC=PMB+PMC+0.5D0*(PMR-PMA-PMB-PMC)
+ PMAN=PMA**2/PMR**2
+ PMBN=PMB**2/PMR**2
+ PMCN=PMC**2/PMR**2
+ PMBCN=PMBC**2/PMR**2
+ FACNOM=SQRT(MAX(0D0,
+ & ((1D0-PMAN-PMBCN)**2-4D0*PMAN*PMBCN)*
+ & ((PMBCN-PMBN-PMCN)**2-4D0*PMBN*PMCN)))*
+ & ((PMR-PMA)**2-(PMB+PMC)**2)*
+ & (1D0+0.25D0*(PMA+PMB+PMC)/PMR)/
+ & ((1D0-PMBCN)*PMBCN*PMR**2)
+ WDTP(I)=WDTP(I)*FACACT/MAX(1D-6,FACNOM)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+
+C...Calculate secondary width (at most two identical/opposite).
+ WID2=1D0
+ IF(MDME(IDC,1).GT.0) THEN
+ IF(KFD2.EQ.KFD1) THEN
+ IF(KCHG(KFC1,3).EQ.0) THEN
+ WID2=WIDS(KFC1,1)
+ ELSEIF(KFD1.GT.0) THEN
+ WID2=WIDS(KFC1,4)
+ ELSE
+ WID2=WIDS(KFC1,5)
+ ENDIF
+ IF(KFD3.GT.0) THEN
+ WID2=WID2*WIDS(KFC3,2)
+ ELSEIF(KFD3.LT.0) THEN
+ WID2=WID2*WIDS(KFC3,3)
+ ENDIF
+ ELSEIF(KFD2.EQ.-KFD1) THEN
+ WID2=WIDS(KFC1,1)
+ IF(KFD3.GT.0) THEN
+ WID2=WID2*WIDS(KFC3,2)
+ ELSEIF(KFD3.LT.0) THEN
+ WID2=WID2*WIDS(KFC3,3)
+ ENDIF
+ ELSEIF(KFD3.EQ.KFD1) THEN
+ IF(KCHG(KFC1,3).EQ.0) THEN
+ WID2=WIDS(KFC1,1)
+ ELSEIF(KFD1.GT.0) THEN
+ WID2=WIDS(KFC1,4)
+ ELSE
+ WID2=WIDS(KFC1,5)
+ ENDIF
+ IF(KFD2.GT.0) THEN
+ WID2=WID2*WIDS(KFC2,2)
+ ELSEIF(KFD2.LT.0) THEN
+ WID2=WID2*WIDS(KFC2,3)
+ ENDIF
+ ELSEIF(KFD3.EQ.-KFD1) THEN
+ WID2=WIDS(KFC1,1)
+ IF(KFD2.GT.0) THEN
+ WID2=WID2*WIDS(KFC2,2)
+ ELSEIF(KFD2.LT.0) THEN
+ WID2=WID2*WIDS(KFC2,3)
+ ENDIF
+ ELSEIF(KFD3.EQ.KFD2) THEN
+ IF(KCHG(KFC2,3).EQ.0) THEN
+ WID2=WIDS(KFC2,1)
+ ELSEIF(KFD2.GT.0) THEN
+ WID2=WIDS(KFC2,4)
+ ELSE
+ WID2=WIDS(KFC2,5)
+ ENDIF
+ IF(KFD1.GT.0) THEN
+ WID2=WID2*WIDS(KFC1,2)
+ ELSEIF(KFD1.LT.0) THEN
+ WID2=WID2*WIDS(KFC1,3)
+ ENDIF
+ ELSEIF(KFD3.EQ.-KFD2) THEN
+ WID2=WIDS(KFC2,1)
+ IF(KFD1.GT.0) THEN
+ WID2=WID2*WIDS(KFC1,2)
+ ELSEIF(KFD1.LT.0) THEN
+ WID2=WID2*WIDS(KFC1,3)
+ ENDIF
+ ELSE
+ IF(KFD1.GT.0) THEN
+ WID2=WIDS(KFC1,2)
+ ELSE
+ WID2=WIDS(KFC1,3)
+ ENDIF
+ IF(KFD2.GT.0) THEN
+ WID2=WID2*WIDS(KFC2,2)
+ ELSE
+ WID2=WID2*WIDS(KFC2,3)
+ ENDIF
+ IF(KFD3.GT.0) THEN
+ WID2=WID2*WIDS(KFC3,2)
+ ELSEIF(KFD3.LT.0) THEN
+ WID2=WID2*WIDS(KFC3,3)
+ ENDIF
+ ENDIF
+
+C...Store effective widths according to case.
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 120 CONTINUE
+C...Return.
+ MINT(61)=0
+ MINT(62)=0
+ MINT(63)=0
+ RETURN
+ ENDIF
+
+C...Here begins detailed dynamical calculation of resonance widths.
+C...Shared treatment of Higgs states.
+ KFHIGG=25
+ IHIGG=1
+ IF(KFLA.EQ.35.OR.KFLA.EQ.36) THEN
+ KFHIGG=KFLA
+ IHIGG=KFLA-33
+ ENDIF
+
+C...Common electroweak and strong constants.
+ XW=PARU(102)
+ XWV=XW
+ IF(MSTP(8).GE.2) XW=1D0-(PMAS(24,1)/PMAS(23,1))**2
+ XW1=1D0-XW
+ AEM=PYALEM(SH)
+ IF(MSTP(8).GE.1) AEM=SQRT(2D0)*PARU(105)*PMAS(24,1)**2*XW/PARU(1)
+ AS=PYALPS(SH)
+ RADC=1D0+AS/PARU(1)
+
+ IF(KFLA.EQ.6) THEN
+C...t quark.
+ FAC=(AEM/(16D0*XW))*(SH/PMAS(24,1)**2)*SHR
+ RADCT=1D0-2.5D0*AS/PARU(1)
+ DO 140 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 140
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 140
+ WID2=1D0
+ IF(I.GE.4.AND.I.LE.7) THEN
+C...t -> W + q; including approximate QCD correction factor.
+ WDTP(I)=FAC*VCKM(3,I-3)*RADCT*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM2)**2+(1D0+RM2)*RM1-2D0*RM1**2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)
+ IF(I.EQ.7) WID2=WID2*WIDS(7,2)
+ ELSE
+ WID2=WIDS(24,3)
+ IF(I.EQ.7) WID2=WID2*WIDS(7,3)
+ ENDIF
+ ELSEIF(I.EQ.9) THEN
+C...t -> H + b.
+ RM2R=PYMRUN(KFDP(IDC,2),SH)**2/SH
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0+RM2-RM1)*(RM2R*PARU(141)**2+1D0/PARU(141)**2)+
+ & 4D0*SQRT(RM2R*RM2))
+ WID2=WIDS(37,2)
+ IF(KFLR.LT.0) WID2=WIDS(37,3)
+CMRENNA++
+ ELSEIF(I.GE.10.AND.I.LE.13.AND.IMSS(1).NE.0) THEN
+C...t -> ~t + ~chi_i0, i = 1, 2, 3 or 4.
+ BETA=ATAN(RMSS(5))
+ SINB=SIN(BETA)
+ TANW=SQRT(PARU(102)/(1D0-PARU(102)))
+ ET=KCHG(6,1)/3D0
+ T3L=SIGN(0.5D0,ET)
+ KFC1=PYCOMP(KFDP(IDC,1))
+ KFC2=PYCOMP(KFDP(IDC,2))
+ PMNCHI=PMAS(KFC1,1)
+ PMSTOP=PMAS(KFC2,1)
+ IF(SHR.GT.PMNCHI+PMSTOP) THEN
+ IZ=I-9
+ DO 130 IK=1,4
+ ZMIXC(IZ,IK)=DCMPLX(ZMIX(IZ,IK),ZMIXI(IZ,IK))
+ 130 CONTINUE
+ AL=SHR*DCONJG(ZMIXC(IZ,4))/(2.0D0*PMAS(24,1)*SINB)
+ AR=-ET*ZMIXC(IZ,1)*TANW
+ BL=T3L*(ZMIXC(IZ,2)-ZMIXC(IZ,1)*TANW)-AR
+ BR=AL
+ FL=SFMIX(6,1)*AL+SFMIX(6,2)*AR
+ FR=SFMIX(6,1)*BL+SFMIX(6,2)*BR
+ PCM=SQRT((SH-(PMNCHI+PMSTOP)**2)*
+ & (SH-(PMNCHI-PMSTOP)**2))/(2D0*SHR)
+ WDTP(I)=(0.5D0*PYALEM(SH)/PARU(102))*PCM*
+ & ((ABS(FL)**2+ABS(FR)**2)*(SH+PMNCHI**2-PMSTOP**2)+
+ & SMZ(IZ)*4D0*SHR*DBLE(FL*DCONJG(FR)))/SH
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(KFC1,2)*WIDS(KFC2,2)
+ ELSE
+ WID2=WIDS(KFC1,2)*WIDS(KFC2,3)
+ ENDIF
+ ENDIF
+ ELSEIF(I.EQ.14.AND.IMSS(1).NE.0) THEN
+C...t -> ~g + ~t
+ KFC1=PYCOMP(KFDP(IDC,1))
+ KFC2=PYCOMP(KFDP(IDC,2))
+ PMNCHI=PMAS(KFC1,1)
+ PMSTOP=PMAS(KFC2,1)
+ IF(SHR.GT.PMNCHI+PMSTOP) THEN
+ RL=SFMIX(6,1)
+ RR=-SFMIX(6,2)
+ PCM=SQRT((SH-(PMNCHI+PMSTOP)**2)*
+ & (SH-(PMNCHI-PMSTOP)**2))/(2D0*SHR)
+ WDTP(I)=4D0/3D0*0.5D0*PYALPS(SH)*PCM*((RL**2+RR**2)*
+ & (SH+PMNCHI**2-PMSTOP**2)+PMNCHI*4D0*SHR*RL*RR)/SH
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(KFC1,2)*WIDS(KFC2,2)
+ ELSE
+ WID2=WIDS(KFC1,2)*WIDS(KFC2,3)
+ ENDIF
+ ENDIF
+ ELSEIF(I.EQ.15.AND.IMSS(1).NE.0) THEN
+C...t -> ~gravitino + ~t
+ XMP2=RMSS(29)**2
+ KFC1=PYCOMP(KFDP(IDC,1))
+ XMGR2=PMAS(KFC1,1)**2
+ WDTP(I)=SH**2*SHR/(96D0*PARU(1)*XMP2*XMGR2)*(1D0-RM2)**4
+ KFC2=PYCOMP(KFDP(IDC,2))
+ WID2=WIDS(KFC2,2)
+ IF(KFLR.LT.0) WID2=WIDS(KFC2,3)
+CMRENNA--
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 140 CONTINUE
+
+ ELSEIF(KFLA.EQ.7) THEN
+C...b' quark.
+ FAC=(AEM/(16D0*XW))*(SH/PMAS(24,1)**2)*SHR
+ DO 150 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 150
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 150
+ WID2=1D0
+ IF(I.GE.4.AND.I.LE.7) THEN
+C...b' -> W + q.
+ WDTP(I)=FAC*VCKM(I-3,4)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM2)**2+(1D0+RM2)*RM1-2D0*RM1**2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,3)
+ IF(I.EQ.6) WID2=WID2*WIDS(6,2)
+ IF(I.EQ.7) WID2=WID2*WIDS(8,2)
+ ELSE
+ WID2=WIDS(24,2)
+ IF(I.EQ.6) WID2=WID2*WIDS(6,3)
+ IF(I.EQ.7) WID2=WID2*WIDS(8,3)
+ ENDIF
+ WID2=WIDS(24,3)
+ IF(KFLR.LT.0) WID2=WIDS(24,2)
+ ELSEIF(I.EQ.9.OR.I.EQ.10) THEN
+C...b' -> H + q.
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0+RM2-RM1)*(PARU(141)**2+RM2/PARU(141)**2)+4D0*RM2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(37,3)
+ IF(I.EQ.10) WID2=WID2*WIDS(6,2)
+ ELSE
+ WID2=WIDS(37,2)
+ IF(I.EQ.10) WID2=WID2*WIDS(6,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 150 CONTINUE
+
+ ELSEIF(KFLA.EQ.8) THEN
+C...t' quark.
+ FAC=(AEM/(16D0*XW))*(SH/PMAS(24,1)**2)*SHR
+ DO 160 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 160
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 160
+ WID2=1D0
+ IF(I.GE.4.AND.I.LE.7) THEN
+C...t' -> W + q.
+ WDTP(I)=FAC*VCKM(4,I-3)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM2)**2+(1D0+RM2)*RM1-2D0*RM1**2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)
+ IF(I.EQ.7) WID2=WID2*WIDS(7,2)
+ ELSE
+ WID2=WIDS(24,3)
+ IF(I.EQ.7) WID2=WID2*WIDS(7,3)
+ ENDIF
+ ELSEIF(I.EQ.9.OR.I.EQ.10) THEN
+C...t' -> H + q.
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0+RM2-RM1)*(RM2*PARU(141)**2+1D0/PARU(141)**2)+4D0*RM2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(37,2)
+ IF(I.EQ.10) WID2=WID2*WIDS(7,2)
+ ELSE
+ WID2=WIDS(37,3)
+ IF(I.EQ.10) WID2=WID2*WIDS(7,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 160 CONTINUE
+
+ ELSEIF(KFLA.EQ.17) THEN
+C...tau' lepton.
+ FAC=(AEM/(16D0*XW))*(SH/PMAS(24,1)**2)*SHR
+ DO 170 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 170
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 170
+ WID2=1D0
+ IF(I.EQ.3) THEN
+C...tau' -> W + nu'_tau.
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM2)**2+(1D0+RM2)*RM1-2D0*RM1**2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,3)
+ WID2=WID2*WIDS(18,2)
+ ELSE
+ WID2=WIDS(24,2)
+ WID2=WID2*WIDS(18,3)
+ ENDIF
+ ELSEIF(I.EQ.5) THEN
+C...tau' -> H + nu'_tau.
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0+RM2-RM1)*(PARU(141)**2+RM2/PARU(141)**2)+4D0*RM2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(37,3)
+ WID2=WID2*WIDS(18,2)
+ ELSE
+ WID2=WIDS(37,2)
+ WID2=WID2*WIDS(18,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 170 CONTINUE
+
+ ELSEIF(KFLA.EQ.18) THEN
+C...nu'_tau neutrino.
+ FAC=(AEM/(16D0*XW))*(SH/PMAS(24,1)**2)*SHR
+ DO 180 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 180
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 180
+ WID2=1D0
+ IF(I.EQ.2) THEN
+C...nu'_tau -> W + tau'.
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM2)**2+(1D0+RM2)*RM1-2D0*RM1**2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)
+ WID2=WID2*WIDS(17,2)
+ ELSE
+ WID2=WIDS(24,3)
+ WID2=WID2*WIDS(17,3)
+ ENDIF
+ ELSEIF(I.EQ.3) THEN
+C...nu'_tau -> H + tau'.
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0+RM2-RM1)*(RM2*PARU(141)**2+1D0/PARU(141)**2)+4D0*RM2)
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(37,2)
+ WID2=WID2*WIDS(17,2)
+ ELSE
+ WID2=WIDS(37,3)
+ WID2=WID2*WIDS(17,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 180 CONTINUE
+
+ ELSEIF(KFLA.EQ.21) THEN
+C...QCD:
+C***Note that widths are not given in dimensional quantities here.
+ DO 190 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 190
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(IABS(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 190
+ WID2=1D0
+ IF(I.LE.8) THEN
+C...QCD -> q + qbar
+ WDTP(I)=(1D0+2D0*RM1)*SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ IF((I.EQ.7.OR.I.EQ.8)) WID2=WIDS(I,1)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 190 CONTINUE
+
+ ELSEIF(KFLA.EQ.22) THEN
+C...QED photon.
+C***Note that widths are not given in dimensional quantities here.
+ DO 200 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 200
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(IABS(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 200
+ WID2=1D0
+ IF(I.LE.8) THEN
+C...QED -> q + qbar.
+ EF=KCHG(I,1)/3D0
+ FCOF=3D0*RADC
+ IF(I.GE.6.AND.MSTP(35).GE.1) FCOF=FCOF*PYHFTH(SH,SH*RM1,1D0)
+ WDTP(I)=FCOF*EF**2*(1D0+2D0*RM1)*SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ IF((I.EQ.7.OR.I.EQ.8)) WID2=WIDS(I,1)
+ ELSEIF(I.LE.12) THEN
+C...QED -> l+ + l-.
+ EF=KCHG(9+2*(I-8),1)/3D0
+ WDTP(I)=EF**2*(1D0+2D0*RM1)*SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(I.EQ.12) WID2=WIDS(17,1)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 200 CONTINUE
+
+ ELSEIF(KFLA.EQ.23) THEN
+C...Z0:
+ ICASE=1
+ XWC=1D0/(16D0*XW*XW1)
+ FAC=(AEM*XWC/3D0)*SHR
+ 210 CONTINUE
+ IF(MINT(61).GE.1.AND.ICASE.EQ.2) THEN
+ VINT(111)=0D0
+ VINT(112)=0D0
+ VINT(114)=0D0
+ ENDIF
+ IF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ KFI=IABS(MINT(15))
+ IF(KFI.GT.20) KFI=IABS(MINT(16))
+ EI=KCHG(KFI,1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ SQMZ=PMAS(23,1)**2
+ HZ=SHR*WDTP(0)
+ IF(MSTP(43).EQ.1.OR.MSTP(43).EQ.3) VINT(111)=1D0
+ IF(MSTP(43).EQ.3) VINT(112)=
+ & 2D0*XWC*SH*(SH-SQMZ)/((SH-SQMZ)**2+HZ**2)
+ IF(MSTP(43).EQ.2.OR.MSTP(43).EQ.3) VINT(114)=
+ & XWC**2*SH**2/((SH-SQMZ)**2+HZ**2)
+ ENDIF
+ DO 220 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 220
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(IABS(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 220
+ WID2=1D0
+ IF(I.LE.8) THEN
+C...Z0 -> q + qbar
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ FCOF=3D0*RADC
+ IF(I.GE.6.AND.MSTP(35).GE.1) FCOF=FCOF*PYHFTH(SH,SH*RM1,1D0)
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ IF((I.EQ.7.OR.I.EQ.8)) WID2=WIDS(I,1)
+ ELSEIF(I.LE.16) THEN
+C...Z0 -> l+ + l-, nu + nubar
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ FCOF=1D0
+ IF((I.EQ.15.OR.I.EQ.16)) WID2=WIDS(2+I,1)
+ ENDIF
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(ICASE.EQ.1) THEN
+ WDTP(I)=FAC*FCOF*(VF**2*(1D0+2D0*RM1)+AF**2*(1D0-4D0*RM1))*
+ & BE34
+ ELSEIF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ WDTP(I)=FAC*FCOF*((EI**2*VINT(111)*EF**2+EI*VI*VINT(112)*
+ & EF*VF+(VI**2+AI**2)*VINT(114)*VF**2)*(1D0+2D0*RM1)+
+ & (VI**2+AI**2)*VINT(114)*AF**2*(1D0-4D0*RM1))*BE34
+ ELSEIF(MINT(61).EQ.2.AND.ICASE.EQ.2) THEN
+ FGGF=FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ FGZF=FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ FZZF=FCOF*(VF**2*(1D0+2D0*RM1)+AF**2*(1D0-4D0*RM1))*BE34
+ ENDIF
+ IF(ICASE.EQ.1) WDTP(I)=FUDGE*WDTP(I)
+ IF(ICASE.EQ.1) WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ IF((ICASE.EQ.1.AND.MINT(61).NE.1).OR.
+ & (ICASE.EQ.2.AND.MINT(61).EQ.1)) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+
+ & WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ IF(MINT(61).EQ.2.AND.ICASE.EQ.2) THEN
+ IF(MSTP(43).EQ.1.OR.MSTP(43).EQ.3) VINT(111)=
+ & VINT(111)+FGGF*WID2
+ IF(MSTP(43).EQ.3) VINT(112)=VINT(112)+FGZF*WID2
+ IF(MSTP(43).EQ.2.OR.MSTP(43).EQ.3) VINT(114)=
+ & VINT(114)+FZZF*WID2
+ ENDIF
+ ENDIF
+ 220 CONTINUE
+ IF(MINT(61).GE.1) ICASE=3-ICASE
+ IF(ICASE.EQ.2) GOTO 210
+
+ ELSEIF(KFLA.EQ.24) THEN
+C...W+/-:
+ FAC=(AEM/(24D0*XW))*SHR
+ DO 230 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 230
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(IABS(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 230
+ WID2=1D0
+ IF(I.LE.16) THEN
+C...W+/- -> q + qbar'
+ FCOF=3D0*RADC*VCKM((I-1)/4+1,MOD(I-1,4)+1)
+ IF(KFLR.GT.0) THEN
+ IF(MOD(I,4).EQ.3) WID2=WIDS(6,2)
+ IF(MOD(I,4).EQ.0) WID2=WIDS(8,2)
+ IF(I.GE.13) WID2=WID2*WIDS(7,3)
+ ELSE
+ IF(MOD(I,4).EQ.3) WID2=WIDS(6,3)
+ IF(MOD(I,4).EQ.0) WID2=WIDS(8,3)
+ IF(I.GE.13) WID2=WID2*WIDS(7,2)
+ ENDIF
+ ELSEIF(I.LE.20) THEN
+C...W+/- -> l+/- + nu
+ FCOF=1D0
+ IF(KFLR.GT.0) THEN
+ IF(I.EQ.20) WID2=WIDS(17,3)*WIDS(18,2)
+ ELSE
+ IF(I.EQ.20) WID2=WIDS(17,2)*WIDS(18,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FAC*FCOF*(2D0-RM1-RM2-(RM1-RM2)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 230 CONTINUE
+
+ ELSEIF(KFLA.EQ.25.OR.KFLA.EQ.35.OR.KFLA.EQ.36) THEN
+C...h0 (or H0, or A0):
+ SHFS=SH
+ FAC=(AEM/(8D0*XW))*(SHFS/PMAS(24,1)**2)*SHR
+ DO 270 I=1,MDCY(KFHIGG,3)
+ IDC=I+MDCY(KFHIGG,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 270
+ KFC1=PYCOMP(KFDP(IDC,1))
+ KFC2=PYCOMP(KFDP(IDC,2))
+ RM1=PMAS(KFC1,1)**2/SH
+ RM2=PMAS(KFC2,1)**2/SH
+ IF(I.NE.16.AND.I.NE.17.AND.SQRT(RM1)+SQRT(RM2).GT.1D0)
+ & GOTO 270
+ WID2=1D0
+
+ IF(I.LE.8) THEN
+C...h0 -> q + qbar
+ WDTP(I)=FAC*3D0*(PYMRUN(KFDP(IDC,1),SH)**2/SHFS)*
+ & SQRT(MAX(0D0,1D0-4D0*RM1))*RADC
+C...A0 behaves like beta, ho and H0 like beta**3.
+ IF(IHIGG.NE.3) WDTP(I)=WDTP(I)*(1D0-4D0*RM1)
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) THEN
+ IF(MOD(I,2).EQ.1) WDTP(I)=WDTP(I)*PARU(151+10*IHIGG)**2
+ IF(MOD(I,2).EQ.0) WDTP(I)=WDTP(I)*PARU(152+10*IHIGG)**2
+ IF(IMSS(1).NE.0.AND.KFC1.EQ.5) THEN
+ WDTP(I)=WDTP(I)/(1D0+RMSS(41))**2
+ IF(IHIGG.NE.3) THEN
+ WDTP(I)=WDTP(I)*(1D0+RMSS(41)*PARU(152+10*IHIGG)/
+ & PARU(151+10*IHIGG))**2
+ ENDIF
+ ENDIF
+ ENDIF
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ IF((I.EQ.7.OR.I.EQ.8)) WID2=WIDS(I,1)
+ ELSEIF(I.LE.12) THEN
+C...h0 -> l+ + l-
+ WDTP(I)=FAC*RM1*SQRT(MAX(0D0,1D0-4D0*RM1))*(SH/SHFS)
+C...A0 behaves like beta, ho and H0 like beta**3.
+ IF(IHIGG.NE.3) WDTP(I)=WDTP(I)*(1D0-4D0*RM1)
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) WDTP(I)=WDTP(I)*
+ & PARU(153+10*IHIGG)**2
+ IF(I.EQ.12) WID2=WIDS(17,1)
+
+ ELSEIF(I.EQ.13) THEN
+C...h0 -> g + g; quark loop contribution only
+ ETARE=0D0
+ ETAIM=0D0
+ DO 240 J=1,2*MSTP(1)
+ EPS=(2D0*PMAS(J,1))**2/SH
+C...Loop integral; function of eps=4m^2/shat; different for A0.
+ IF(EPS.LE.1D0) THEN
+ IF(EPS.GT.1D-4) THEN
+ ROOT=SQRT(1D0-EPS)
+ RLN=LOG((1D0+ROOT)/(1D0-ROOT))
+ ELSE
+ RLN=LOG(4D0/EPS-2D0)
+ ENDIF
+ PHIRE=-0.25D0*(RLN**2-PARU(1)**2)
+ PHIIM=0.5D0*PARU(1)*RLN
+ ELSE
+ PHIRE=(ASIN(1D0/SQRT(EPS)))**2
+ PHIIM=0D0
+ ENDIF
+ IF(IHIGG.LE.2) THEN
+ ETAREJ=-0.5D0*EPS*(1D0+(1D0-EPS)*PHIRE)
+ ETAIMJ=-0.5D0*EPS*(1D0-EPS)*PHIIM
+ ELSE
+ ETAREJ=-0.5D0*EPS*PHIRE
+ ETAIMJ=-0.5D0*EPS*PHIIM
+ ENDIF
+C...Couplings (=1 for standard model Higgs).
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) THEN
+ IF(MOD(J,2).EQ.1) THEN
+ ETAREJ=ETAREJ*PARU(151+10*IHIGG)
+ ETAIMJ=ETAIMJ*PARU(151+10*IHIGG)
+ ELSE
+ ETAREJ=ETAREJ*PARU(152+10*IHIGG)
+ ETAIMJ=ETAIMJ*PARU(152+10*IHIGG)
+ ENDIF
+ ENDIF
+ ETARE=ETARE+ETAREJ
+ ETAIM=ETAIM+ETAIMJ
+ 240 CONTINUE
+ ETA2=ETARE**2+ETAIM**2
+ WDTP(I)=FAC*(AS/PARU(1))**2*ETA2
+
+ ELSEIF(I.EQ.14) THEN
+C...h0 -> gamma + gamma; quark, lepton, W+- and H+- loop contributions
+ ETARE=0D0
+ ETAIM=0D0
+ JMAX=3*MSTP(1)+1
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) JMAX=JMAX+1
+ DO 250 J=1,JMAX
+ IF(J.LE.2*MSTP(1)) THEN
+ EJ=KCHG(J,1)/3D0
+ EPS=(2D0*PMAS(J,1))**2/SH
+ ELSEIF(J.LE.3*MSTP(1)) THEN
+ JL=2*(J-2*MSTP(1))-1
+ EJ=KCHG(10+JL,1)/3D0
+ EPS=(2D0*PMAS(10+JL,1))**2/SH
+ ELSEIF(J.EQ.3*MSTP(1)+1) THEN
+ EPS=(2D0*PMAS(24,1))**2/SH
+ ELSE
+ EPS=(2D0*PMAS(37,1))**2/SH
+ ENDIF
+C...Loop integral; function of eps=4m^2/shat.
+ IF(EPS.LE.1D0) THEN
+ IF(EPS.GT.1D-4) THEN
+ ROOT=SQRT(1D0-EPS)
+ RLN=LOG((1D0+ROOT)/(1D0-ROOT))
+ ELSE
+ RLN=LOG(4D0/EPS-2D0)
+ ENDIF
+ PHIRE=-0.25D0*(RLN**2-PARU(1)**2)
+ PHIIM=0.5D0*PARU(1)*RLN
+ ELSE
+ PHIRE=(ASIN(1D0/SQRT(EPS)))**2
+ PHIIM=0D0
+ ENDIF
+ IF(J.LE.3*MSTP(1)) THEN
+C...Fermion loops: loop integral different for A0; charges.
+ IF(IHIGG.LE.2) THEN
+ PHIPRE=-0.5D0*EPS*(1D0+(1D0-EPS)*PHIRE)
+ PHIPIM=-0.5D0*EPS*(1D0-EPS)*PHIIM
+ ELSE
+ PHIPRE=-0.5D0*EPS*PHIRE
+ PHIPIM=-0.5D0*EPS*PHIIM
+ ENDIF
+ IF(J.LE.2*MSTP(1).AND.MOD(J,2).EQ.1) THEN
+ EJC=3D0*EJ**2
+ EJH=PARU(151+10*IHIGG)
+ ELSEIF(J.LE.2*MSTP(1)) THEN
+ EJC=3D0*EJ**2
+ EJH=PARU(152+10*IHIGG)
+ ELSE
+ EJC=EJ**2
+ EJH=PARU(153+10*IHIGG)
+ ENDIF
+ IF(MSTP(4).EQ.0.AND.IHIGG.EQ.1) EJH=1D0
+ ETAREJ=EJC*EJH*PHIPRE
+ ETAIMJ=EJC*EJH*PHIPIM
+ ELSEIF(J.EQ.3*MSTP(1)+1) THEN
+C...W loops: loop integral and charges.
+ ETAREJ=0.5D0+0.75D0*EPS*(1D0+(2D0-EPS)*PHIRE)
+ ETAIMJ=0.75D0*EPS*(2D0-EPS)*PHIIM
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) THEN
+ ETAREJ=ETAREJ*PARU(155+10*IHIGG)
+ ETAIMJ=ETAIMJ*PARU(155+10*IHIGG)
+ ENDIF
+ ELSE
+C...Charged H loops: loop integral and charges.
+ FACHHH=(PMAS(24,1)/PMAS(37,1))**2*
+ & PARU(158+10*IHIGG+2*(IHIGG/3))
+ ETAREJ=EPS*(1D0-EPS*PHIRE)*FACHHH
+ ETAIMJ=-EPS**2*PHIIM*FACHHH
+ ENDIF
+ ETARE=ETARE+ETAREJ
+ ETAIM=ETAIM+ETAIMJ
+ 250 CONTINUE
+ ETA2=ETARE**2+ETAIM**2
+ WDTP(I)=FAC*(AEM/PARU(1))**2*0.5D0*ETA2
+
+ ELSEIF(I.EQ.15) THEN
+C...h0 -> gamma + Z0; quark, lepton, W and H+- loop contributions
+ ETARE=0D0
+ ETAIM=0D0
+ JMAX=3*MSTP(1)+1
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) JMAX=JMAX+1
+ DO 260 J=1,JMAX
+ IF(J.LE.2*MSTP(1)) THEN
+ EJ=KCHG(J,1)/3D0
+ AJ=SIGN(1D0,EJ+0.1D0)
+ VJ=AJ-4D0*EJ*XWV
+ EPS=(2D0*PMAS(J,1))**2/SH
+ EPSP=(2D0*PMAS(J,1)/PMAS(23,1))**2
+ ELSEIF(J.LE.3*MSTP(1)) THEN
+ JL=2*(J-2*MSTP(1))-1
+ EJ=KCHG(10+JL,1)/3D0
+ AJ=SIGN(1D0,EJ+0.1D0)
+ VJ=AJ-4D0*EJ*XWV
+ EPS=(2D0*PMAS(10+JL,1))**2/SH
+ EPSP=(2D0*PMAS(10+JL,1)/PMAS(23,1))**2
+ ELSE
+ EPS=(2D0*PMAS(24,1))**2/SH
+ EPSP=(2D0*PMAS(24,1)/PMAS(23,1))**2
+ ENDIF
+C...Loop integrals; functions of eps=4m^2/shat and eps'=4m^2/m_Z^2.
+ IF(EPS.LE.1D0) THEN
+ ROOT=SQRT(1D0-EPS)
+ IF(EPS.GT.1D-4) THEN
+ RLN=LOG((1D0+ROOT)/(1D0-ROOT))
+ ELSE
+ RLN=LOG(4D0/EPS-2D0)
+ ENDIF
+ PHIRE=-0.25D0*(RLN**2-PARU(1)**2)
+ PHIIM=0.5D0*PARU(1)*RLN
+ PSIRE=0.5D0*ROOT*RLN
+ PSIIM=-0.5D0*ROOT*PARU(1)
+ ELSE
+ PHIRE=(ASIN(1D0/SQRT(EPS)))**2
+ PHIIM=0D0
+ PSIRE=SQRT(EPS-1D0)*ASIN(1D0/SQRT(EPS))
+ PSIIM=0D0
+ ENDIF
+ IF(EPSP.LE.1D0) THEN
+ ROOT=SQRT(1D0-EPSP)
+ IF(EPSP.GT.1D-4) THEN
+ RLN=LOG((1D0+ROOT)/(1D0-ROOT))
+ ELSE
+ RLN=LOG(4D0/EPSP-2D0)
+ ENDIF
+ PHIREP=-0.25D0*(RLN**2-PARU(1)**2)
+ PHIIMP=0.5D0*PARU(1)*RLN
+ PSIREP=0.5D0*ROOT*RLN
+ PSIIMP=-0.5D0*ROOT*PARU(1)
+ ELSE
+ PHIREP=(ASIN(1D0/SQRT(EPSP)))**2
+ PHIIMP=0D0
+ PSIREP=SQRT(EPSP-1D0)*ASIN(1D0/SQRT(EPSP))
+ PSIIMP=0D0
+ ENDIF
+ FXYRE=EPS*EPSP/(8D0*(EPS-EPSP))*(1D0+EPS*EPSP/(EPS-EPSP)*
+ & (PHIRE-PHIREP)+2D0*EPS/(EPS-EPSP)*(PSIRE-PSIREP))
+ FXYIM=EPS**2*EPSP/(8D0*(EPS-EPSP)**2)*
+ & (EPSP*(PHIIM-PHIIMP)+2D0*(PSIIM-PSIIMP))
+ F1RE=-EPS*EPSP/(2D0*(EPS-EPSP))*(PHIRE-PHIREP)
+ F1IM=-EPS*EPSP/(2D0*(EPS-EPSP))*(PHIIM-PHIIMP)
+ IF(J.LE.3*MSTP(1)) THEN
+C...Fermion loops: loop integral different for A0; charges.
+ IF(IHIGG.EQ.3) FXYRE=0D0
+ IF(IHIGG.EQ.3) FXYIM=0D0
+ IF(J.LE.2*MSTP(1).AND.MOD(J,2).EQ.1) THEN
+ EJC=-3D0*EJ*VJ
+ EJH=PARU(151+10*IHIGG)
+ ELSEIF(J.LE.2*MSTP(1)) THEN
+ EJC=-3D0*EJ*VJ
+ EJH=PARU(152+10*IHIGG)
+ ELSE
+ EJC=-EJ*VJ
+ EJH=PARU(153+10*IHIGG)
+ ENDIF
+ IF(MSTP(4).EQ.0.AND.IHIGG.EQ.1) EJH=1D0
+ ETAREJ=EJC*EJH*(FXYRE-0.25D0*F1RE)
+ ETAIMJ=EJC*EJH*(FXYIM-0.25D0*F1IM)
+ ELSEIF(J.EQ.3*MSTP(1)+1) THEN
+C...W loops: loop integral and charges.
+ HEPS=(1D0+2D0/EPS)*XW/XW1-(5D0+2D0/EPS)
+ ETAREJ=-XW1*((3D0-XW/XW1)*F1RE+HEPS*FXYRE)
+ ETAIMJ=-XW1*((3D0-XW/XW1)*F1IM+HEPS*FXYIM)
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) THEN
+ ETAREJ=ETAREJ*PARU(155+10*IHIGG)
+ ETAIMJ=ETAIMJ*PARU(155+10*IHIGG)
+ ENDIF
+ ELSE
+C...Charged H loops: loop integral and charges.
+ FACHHH=(PMAS(24,1)/PMAS(37,1))**2*(1D0-2D0*XW)*
+ & PARU(158+10*IHIGG+2*(IHIGG/3))
+ ETAREJ=FACHHH*FXYRE
+ ETAIMJ=FACHHH*FXYIM
+ ENDIF
+ ETARE=ETARE+ETAREJ
+ ETAIM=ETAIM+ETAIMJ
+ 260 CONTINUE
+ ETA2=(ETARE**2+ETAIM**2)/(XW*XW1)
+ WDTP(I)=FAC*(AEM/PARU(1))**2*(1D0-PMAS(23,1)**2/SH)**3*ETA2
+ WID2=WIDS(23,2)
+
+ ELSEIF(I.LE.17) THEN
+C...h0 -> Z0 + Z0, W+ + W-
+ PM1=PMAS(IABS(KFDP(IDC,1)),1)
+ PG1=PMAS(IABS(KFDP(IDC,1)),2)
+ IF(MINT(62).GE.1) THEN
+ IF(MSTP(42).EQ.0.OR.(4D0*(PM1+10D0*PG1)**2.LT.SH.AND.
+ & CKIN(46).LT.CKIN(45).AND.CKIN(48).LT.CKIN(47).AND.
+ & MAX(CKIN(45),CKIN(47)).LT.PM1-10D0*PG1)) THEN
+ MOFSV(IHIGG,I-15)=0
+ WIDW=(1D0-4D0*RM1+12D0*RM1**2)*SQRT(MAX(0D0,
+ & 1D0-4D0*RM1))
+ WID2=1D0
+ ELSE
+ MOFSV(IHIGG,I-15)=1
+ RMAS=SQRT(MAX(0D0,SH))
+ CALL PYOFSH(1,KFLA,KFDP(IDC,1),KFDP(IDC,2),RMAS,WIDW,
+ & WID2)
+ WIDWSV(IHIGG,I-15)=WIDW
+ WID2SV(IHIGG,I-15)=WID2
+ ENDIF
+ ELSE
+ IF(MOFSV(IHIGG,I-15).EQ.0) THEN
+ WIDW=(1D0-4D0*RM1+12D0*RM1**2)*SQRT(MAX(0D0,
+ & 1D0-4D0*RM1))
+ WID2=1D0
+ ELSE
+ WIDW=WIDWSV(IHIGG,I-15)
+ WID2=WID2SV(IHIGG,I-15)
+ ENDIF
+ ENDIF
+ WDTP(I)=FAC*WIDW/(2D0*(18-I))
+ IF(MSTP(49).NE.0) WDTP(I)=WDTP(I)*PMAS(KFHIGG,1)**2/SHFS
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) WDTP(I)=WDTP(I)*
+ & PARU(138+I+10*IHIGG)**2
+ WID2=WID2*WIDS(7+I,1)
+
+ ELSEIF(I.EQ.18.AND.IHIGG.GE.2) THEN
+C...H0 -> Z0 + h0, A0-> Z0 + h0
+ WDTP(I)=FAC*0.5D0*SQRT(MAX(0D0,
+ & (1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ IF(IHIGG.EQ.2) THEN
+ WDTP(I)=WDTP(I)*PARU(179)**2
+ ELSEIF(IHIGG.EQ.3) THEN
+ WDTP(I)=WDTP(I)*PARU(186)**2
+ ENDIF
+ WID2=WIDS(23,2)*WIDS(25,2)
+
+ ELSEIF(I.EQ.19.AND.IHIGG.GE.2) THEN
+C...H0 -> h0 + h0, A0-> h0 + h0
+ WDTP(I)=FAC*0.25D0*
+ & PMAS(23,1)**4/SH**2*SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(IHIGG.EQ.2) THEN
+ WDTP(I)=WDTP(I)*PARU(176)**2
+ ELSEIF(IHIGG.EQ.3) THEN
+ WDTP(I)=WDTP(I)*PARU(169)**2
+ ENDIF
+ WID2=WIDS(25,1)
+ ELSEIF((I.EQ.20.OR.I.EQ.21).AND.IHIGG.GE.2) THEN
+C...H0 -> W+/- + H-/+, A0 -> W+/- + H-/+
+ WDTP(I)=FAC*0.5D0*SQRT(MAX(0D0,
+ & (1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ & *PARU(195+IHIGG)**2
+ IF(I.EQ.20) THEN
+ WID2=WIDS(24,2)*WIDS(37,3)
+ ELSEIF(I.EQ.21) THEN
+ WID2=WIDS(24,3)*WIDS(37,2)
+ ENDIF
+
+ ELSEIF(I.EQ.22.AND.IHIGG.EQ.2) THEN
+C...H0 -> Z0 + A0.
+ WDTP(I)=FAC*0.5D0*PARU(187)**2*SQRT(MAX(0D0,
+ & (1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ WID2=WIDS(36,2)*WIDS(23,2)
+
+ ELSEIF(I.EQ.23.AND.IHIGG.EQ.2) THEN
+C...H0 -> h0 + A0.
+ WDTP(I)=FAC*0.5D0*PARU(180)**2*
+ & PMAS(23,1)**4/SH**2*SQRT(MAX(0D0,1D0-4D0*RM1))
+ WID2=WIDS(25,2)*WIDS(36,2)
+
+ ELSEIF(I.EQ.24.AND.IHIGG.EQ.2) THEN
+C...H0 -> A0 + A0
+ WDTP(I)=FAC*0.25D0*PARU(177)**2*
+ & PMAS(23,1)**4/SH**2*SQRT(MAX(0D0,1D0-4D0*RM1))
+ WID2=WIDS(36,1)
+
+CMRENNA++
+ ELSE
+C...Add in SUSY decays (two-body) by rescaling by phase space factor.
+ RM10=RM1*SH/PMR**2
+ RM20=RM2*SH/PMR**2
+ WFAC0=1D0+RM10**2+RM20**2-2D0*(RM10+RM20+RM10*RM20)
+ WFAC=1D0+RM1**2+RM2**2-2D0*(RM1+RM2+RM1*RM2)
+ IF(WFAC.LE.0D0 .OR. WFAC0.LE.0D0) THEN
+ WFAC=0D0
+ ELSE
+ WFAC=WFAC/WFAC0
+ ENDIF
+ WDTP(I)=PMAS(KFLA,2)*BRAT(IDC)*(SHR/PMR)*SQRT(WFAC)
+CMRENNA--
+ IF(KFC2.EQ.KFC1) THEN
+ WID2=WIDS(KFC1,1)
+ ELSE
+ KSGN1=2
+ IF(KFDP(IDC,1).LT.0) KSGN1=3
+ KSGN2=2
+ IF(KFDP(IDC,2).LT.0) KSGN2=3
+ WID2=WIDS(KFC1,KSGN1)*WIDS(KFC2,KSGN2)
+ ENDIF
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 270 CONTINUE
+
+ ELSEIF(KFLA.EQ.32) THEN
+C...Z'0:
+ ICASE=1
+ XWC=1D0/(16D0*XW*XW1)
+ FAC=(AEM*XWC/3D0)*SHR
+ VINT(117)=0D0
+ 280 CONTINUE
+ IF(MINT(61).GE.1.AND.ICASE.EQ.2) THEN
+ VINT(111)=0D0
+ VINT(112)=0D0
+ VINT(113)=0D0
+ VINT(114)=0D0
+ VINT(115)=0D0
+ VINT(116)=0D0
+ ENDIF
+ IF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ KFAI=IABS(MINT(15))
+ EI=KCHG(KFAI,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ KFAIC=1
+ IF(KFAI.LE.10.AND.MOD(KFAI,2).EQ.0) KFAIC=2
+ IF(KFAI.GT.10.AND.MOD(KFAI,2).NE.0) KFAIC=3
+ IF(KFAI.GT.10.AND.MOD(KFAI,2).EQ.0) KFAIC=4
+ IF(KFAI.LE.2.OR.KFAI.EQ.11.OR.KFAI.EQ.12) THEN
+ VPI=PARU(119+2*KFAIC)
+ API=PARU(120+2*KFAIC)
+ ELSEIF(KFAI.LE.4.OR.KFAI.EQ.13.OR.KFAI.EQ.14) THEN
+ VPI=PARJ(178+2*KFAIC)
+ API=PARJ(179+2*KFAIC)
+ ELSE
+ VPI=PARJ(186+2*KFAIC)
+ API=PARJ(187+2*KFAIC)
+ ENDIF
+ SQMZ=PMAS(23,1)**2
+ HZ=SHR*VINT(117)
+ SQMZP=PMAS(32,1)**2
+ HZP=SHR*WDTP(0)
+ IF(MSTP(44).EQ.1.OR.MSTP(44).EQ.4.OR.MSTP(44).EQ.5.OR.
+ & MSTP(44).EQ.7) VINT(111)=1D0
+ IF(MSTP(44).EQ.4.OR.MSTP(44).EQ.7) VINT(112)=
+ & 2D0*XWC*SH*(SH-SQMZ)/((SH-SQMZ)**2+HZ**2)
+ IF(MSTP(44).EQ.5.OR.MSTP(44).EQ.7) VINT(113)=
+ & 2D0*XWC*SH*(SH-SQMZP)/((SH-SQMZP)**2+HZP**2)
+ IF(MSTP(44).EQ.2.OR.MSTP(44).EQ.4.OR.MSTP(44).EQ.6.OR.
+ & MSTP(44).EQ.7) VINT(114)=XWC**2*SH**2/((SH-SQMZ)**2+HZ**2)
+ IF(MSTP(44).EQ.6.OR.MSTP(44).EQ.7) VINT(115)=
+ & 2D0*XWC**2*SH**2*((SH-SQMZ)*(SH-SQMZP)+HZ*HZP)/
+ & (((SH-SQMZ)**2+HZ**2)*((SH-SQMZP)**2+HZP**2))
+ IF(MSTP(44).EQ.3.OR.MSTP(44).EQ.5.OR.MSTP(44).EQ.6.OR.
+ & MSTP(44).EQ.7) VINT(116)=XWC**2*SH**2/((SH-SQMZP)**2+HZP**2)
+ ENDIF
+ DO 290 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 290
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0.OR.MDME(IDC,1).LT.0) GOTO 290
+ WID2=1D0
+ IF(I.LE.16) THEN
+ IF(I.LE.8) THEN
+C...Z'0 -> q + qbar
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ IF(I.LE.2) THEN
+ VPF=PARU(123-2*MOD(I,2))
+ APF=PARU(124-2*MOD(I,2))
+ ELSEIF(I.LE.4) THEN
+ VPF=PARJ(182-2*MOD(I,2))
+ APF=PARJ(183-2*MOD(I,2))
+ ELSE
+ VPF=PARJ(190-2*MOD(I,2))
+ APF=PARJ(191-2*MOD(I,2))
+ ENDIF
+ FCOF=3D0*RADC
+ IF(I.GE.6.AND.MSTP(35).GE.1) FCOF=FCOF*
+ & PYHFTH(SH,SH*RM1,1D0)
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ IF((I.EQ.7.OR.I.EQ.8)) WID2=WIDS(I,1)
+ ELSEIF(I.LE.16) THEN
+C...Z'0 -> l+ + l-, nu + nubar
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ IF(I.LE.10) THEN
+ VPF=PARU(127-2*MOD(I,2))
+ APF=PARU(128-2*MOD(I,2))
+ ELSEIF(I.LE.12) THEN
+ VPF=PARJ(186-2*MOD(I,2))
+ APF=PARJ(187-2*MOD(I,2))
+ ELSE
+ VPF=PARJ(194-2*MOD(I,2))
+ APF=PARJ(195-2*MOD(I,2))
+ ENDIF
+ FCOF=1D0
+ IF((I.EQ.15.OR.I.EQ.16)) WID2=WIDS(2+I,1)
+ ENDIF
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(ICASE.EQ.1) THEN
+ WDTPZ=FCOF*(VF**2*(1D0+2D0*RM1)+AF**2*(1D0-4D0*RM1))*BE34
+ WDTP(I)=FAC*FCOF*(VPF**2*(1D0+2D0*RM1)+
+ & APF**2*(1D0-4D0*RM1))*BE34
+ ELSEIF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ WDTP(I)=FAC*FCOF*((EI**2*VINT(111)*EF**2+EI*VI*VINT(112)*
+ & EF*VF+EI*VPI*VINT(113)*EF*VPF+(VI**2+AI**2)*VINT(114)*
+ & VF**2+(VI*VPI+AI*API)*VINT(115)*VF*VPF+(VPI**2+API**2)*
+ & VINT(116)*VPF**2)*(1D0+2D0*RM1)+((VI**2+AI**2)*VINT(114)*
+ & AF**2+(VI*VPI+AI*API)*VINT(115)*AF*APF+(VPI**2+API**2)*
+ & VINT(116)*APF**2)*(1D0-4D0*RM1))*BE34
+ ELSEIF(MINT(61).EQ.2) THEN
+ FGGF=FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ FGZF=FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ FGZPF=FCOF*EF*VPF*(1D0+2D0*RM1)*BE34
+ FZZF=FCOF*(VF**2*(1D0+2D0*RM1)+AF**2*(1D0-4D0*RM1))*BE34
+ FZZPF=FCOF*(VF*VPF*(1D0+2D0*RM1)+AF*APF*(1D0-4D0*RM1))*
+ & BE34
+ FZPZPF=FCOF*(VPF**2*(1D0+2D0*RM1)+APF**2*(1D0-4D0*RM1))*
+ & BE34
+ ENDIF
+ ELSEIF(I.EQ.17) THEN
+C...Z'0 -> W+ + W-
+ WDTPZP=PARU(129)**2*XW1**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0+10D0*RM1+10D0*RM2+RM1**2+RM2**2+10D0*RM1*RM2)
+ IF(ICASE.EQ.1) THEN
+ WDTPZ=0D0
+ WDTP(I)=FAC*WDTPZP
+ ELSEIF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ WDTP(I)=FAC*(VPI**2+API**2)*VINT(116)*WDTPZP
+ ELSEIF(MINT(61).EQ.2) THEN
+ FGGF=0D0
+ FGZF=0D0
+ FGZPF=0D0
+ FZZF=0D0
+ FZZPF=0D0
+ FZPZPF=WDTPZP
+ ENDIF
+ WID2=WIDS(24,1)
+ ELSEIF(I.EQ.18) THEN
+C...Z'0 -> H+ + H-
+ CZC=2D0*(1D0-2D0*XW)
+ BE34C=(1D0-4D0*RM1)*SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(ICASE.EQ.1) THEN
+ WDTPZ=0.25D0*PARU(142)**2*CZC**2*BE34C
+ WDTP(I)=FAC*0.25D0*PARU(143)**2*CZC**2*BE34C
+ ELSEIF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ WDTP(I)=FAC*0.25D0*(EI**2*VINT(111)+PARU(142)*EI*VI*
+ & VINT(112)*CZC+PARU(143)*EI*VPI*VINT(113)*CZC+PARU(142)**2*
+ & (VI**2+AI**2)*VINT(114)*CZC**2+PARU(142)*PARU(143)*
+ & (VI*VPI+AI*API)*VINT(115)*CZC**2+PARU(143)**2*
+ & (VPI**2+API**2)*VINT(116)*CZC**2)*BE34C
+ ELSEIF(MINT(61).EQ.2) THEN
+ FGGF=0.25D0*BE34C
+ FGZF=0.25D0*PARU(142)*CZC*BE34C
+ FGZPF=0.25D0*PARU(143)*CZC*BE34C
+ FZZF=0.25D0*PARU(142)**2*CZC**2*BE34C
+ FZZPF=0.25D0*PARU(142)*PARU(143)*CZC**2*BE34C
+ FZPZPF=0.25D0*PARU(143)**2*CZC**2*BE34C
+ ENDIF
+ WID2=WIDS(37,1)
+ ELSEIF(I.EQ.19) THEN
+C...Z'0 -> Z0 + gamma.
+ ELSEIF(I.EQ.20) THEN
+C...Z'0 -> Z0 + h0
+ FLAM=SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ WDTPZP=PARU(145)**2*4D0*ABS(1D0-2D0*XW)*
+ & (3D0*RM1+0.25D0*FLAM**2)*FLAM
+ IF(ICASE.EQ.1) THEN
+ WDTPZ=0D0
+ WDTP(I)=FAC*WDTPZP
+ ELSEIF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ WDTP(I)=FAC*(VPI**2+API**2)*VINT(116)*WDTPZP
+ ELSEIF(MINT(61).EQ.2) THEN
+ FGGF=0D0
+ FGZF=0D0
+ FGZPF=0D0
+ FZZF=0D0
+ FZZPF=0D0
+ FZPZPF=WDTPZP
+ ENDIF
+ WID2=WIDS(23,2)*WIDS(25,2)
+ ELSEIF(I.EQ.21.OR.I.EQ.22) THEN
+C...Z' -> h0 + A0 or H0 + A0.
+ BE34C=SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ IF(I.EQ.21) THEN
+ CZAH=PARU(186)
+ CZPAH=PARU(188)
+ ELSE
+ CZAH=PARU(187)
+ CZPAH=PARU(189)
+ ENDIF
+ IF(ICASE.EQ.1) THEN
+ WDTPZ=CZAH**2*BE34C
+ WDTP(I)=FAC*CZPAH**2*BE34C
+ ELSEIF(MINT(61).EQ.1.AND.ICASE.EQ.2) THEN
+ WDTP(I)=FAC*(CZAH**2*(VI**2+AI**2)*VINT(114)+CZAH*CZPAH*
+ & (VI*VPI+AI*API)*VINT(115)+CZPAH**2*(VPI**2+API**2)*
+ & VINT(116))*BE34C
+ ELSEIF(MINT(61).EQ.2) THEN
+ FGGF=0D0
+ FGZF=0D0
+ FGZPF=0D0
+ FZZF=CZAH**2*BE34C
+ FZZPF=CZAH*CZPAH*BE34C
+ FZPZPF=CZPAH**2*BE34C
+ ENDIF
+ IF(I.EQ.21) WID2=WIDS(25,2)*WIDS(36,2)
+ IF(I.EQ.22) WID2=WIDS(35,2)*WIDS(36,2)
+ ENDIF
+ IF(ICASE.EQ.1) THEN
+ VINT(117)=VINT(117)+FAC*WDTPZ
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ ENDIF
+ IF(MDME(IDC,1).GT.0) THEN
+ IF((ICASE.EQ.1.AND.MINT(61).NE.1).OR.
+ & (ICASE.EQ.2.AND.MINT(61).EQ.1)) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+
+ & WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ IF(MINT(61).EQ.2.AND.ICASE.EQ.2) THEN
+ IF(MSTP(44).EQ.1.OR.MSTP(44).EQ.4.OR.MSTP(44).EQ.5.OR.
+ & MSTP(44).EQ.7) VINT(111)=VINT(111)+FGGF*WID2
+ IF(MSTP(44).EQ.4.OR.MSTP(44).EQ.7) VINT(112)=VINT(112)+
+ & FGZF*WID2
+ IF(MSTP(44).EQ.5.OR.MSTP(44).EQ.7) VINT(113)=VINT(113)+
+ & FGZPF*WID2
+ IF(MSTP(44).EQ.2.OR.MSTP(44).EQ.4.OR.MSTP(44).EQ.6.OR.
+ & MSTP(44).EQ.7) VINT(114)=VINT(114)+FZZF*WID2
+ IF(MSTP(44).EQ.6.OR.MSTP(44).EQ.7) VINT(115)=VINT(115)+
+ & FZZPF*WID2
+ IF(MSTP(44).EQ.3.OR.MSTP(44).EQ.5.OR.MSTP(44).EQ.6.OR.
+ & MSTP(44).EQ.7) VINT(116)=VINT(116)+FZPZPF*WID2
+ ENDIF
+ ENDIF
+ 290 CONTINUE
+ IF(MINT(61).GE.1) ICASE=3-ICASE
+ IF(ICASE.EQ.2) GOTO 280
+
+ ELSEIF(KFLA.EQ.34) THEN
+C...W'+/-:
+ FAC=(AEM/(24D0*XW))*SHR
+ DO 300 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 300
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 300
+ WID2=1D0
+ IF(I.LE.20) THEN
+ IF(I.LE.16) THEN
+C...W'+/- -> q + qbar'
+ FCOF=3D0*RADC*(PARU(131)**2+PARU(132)**2)*
+ & VCKM((I-1)/4+1,MOD(I-1,4)+1)
+ IF(KFLR.GT.0) THEN
+ IF(MOD(I,4).EQ.3) WID2=WIDS(6,2)
+ IF(MOD(I,4).EQ.0) WID2=WIDS(8,2)
+ IF(I.GE.13) WID2=WID2*WIDS(7,3)
+ ELSE
+ IF(MOD(I,4).EQ.3) WID2=WIDS(6,3)
+ IF(MOD(I,4).EQ.0) WID2=WIDS(8,3)
+ IF(I.GE.13) WID2=WID2*WIDS(7,2)
+ ENDIF
+ ELSEIF(I.LE.20) THEN
+C...W'+/- -> l+/- + nu
+ FCOF=PARU(133)**2+PARU(134)**2
+ IF(KFLR.GT.0) THEN
+ IF(I.EQ.20) WID2=WIDS(17,3)*WIDS(18,2)
+ ELSE
+ IF(I.EQ.20) WID2=WIDS(17,2)*WIDS(18,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FAC*FCOF*0.5D0*(2D0-RM1-RM2-(RM1-RM2)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ ELSEIF(I.EQ.21) THEN
+C...W'+/- -> W+/- + Z0
+ WDTP(I)=FAC*PARU(135)**2*0.5D0*XW1*(RM1/RM2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0+10D0*RM1+10D0*RM2+RM1**2+RM2**2+10D0*RM1*RM2)
+ IF(KFLR.GT.0) WID2=WIDS(24,2)*WIDS(23,2)
+ IF(KFLR.LT.0) WID2=WIDS(24,3)*WIDS(23,2)
+ ELSEIF(I.EQ.23) THEN
+C...W'+/- -> W+/- + h0
+ FLAM=SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ WDTP(I)=FAC*PARU(146)**2*2D0*(3D0*RM1+0.25D0*FLAM**2)*FLAM
+ IF(KFLR.GT.0) WID2=WIDS(24,2)*WIDS(25,2)
+ IF(KFLR.LT.0) WID2=WIDS(24,3)*WIDS(25,2)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 300 CONTINUE
+
+ ELSEIF(KFLA.EQ.37) THEN
+C...H+/-:
+C IF(MSTP(49).EQ.0) THEN
+ SHFS=SH
+C ELSE
+C SHFS=PMAS(37,1)**2
+C ENDIF
+ FAC=(AEM/(8D0*XW))*(SHFS/PMAS(24,1)**2)*SHR
+ DO 310 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 310
+ KFC1=PYCOMP(KFDP(IDC,1))
+ KFC2=PYCOMP(KFDP(IDC,2))
+ RM1=PMAS(KFC1,1)**2/SH
+ RM2=PMAS(KFC2,1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 310
+ WID2=1D0
+ IF(I.LE.4) THEN
+C...H+/- -> q + qbar'
+ RM1R=PYMRUN(KFDP(IDC,1),SH)**2/SH
+ RM2R=PYMRUN(KFDP(IDC,2),SH)**2/SH
+ WDTP(I)=FAC*3D0*RADC*MAX(0D0,(RM1R*PARU(141)**2+
+ & RM2R/PARU(141)**2)*(1D0-RM1R-RM2R)-4D0*RM1R*RM2R)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*(SH/SHFS)
+ IF(KFLR.GT.0) THEN
+ IF(I.EQ.3) WID2=WIDS(6,2)
+ IF(I.EQ.4) WID2=WIDS(7,3)*WIDS(8,2)
+ ELSE
+ IF(I.EQ.3) WID2=WIDS(6,3)
+ IF(I.EQ.4) WID2=WIDS(7,2)*WIDS(8,3)
+ ENDIF
+ ELSEIF(I.LE.8) THEN
+C...H+/- -> l+/- + nu
+ WDTP(I)=FAC*((RM1*PARU(141)**2+RM2/PARU(141)**2)*
+ & (1D0-RM1-RM2)-4D0*RM1*RM2)*SQRT(MAX(0D0,
+ & (1D0-RM1-RM2)**2-4D0*RM1*RM2))*(SH/SHFS)
+ IF(KFLR.GT.0) THEN
+ IF(I.EQ.8) WID2=WIDS(17,3)*WIDS(18,2)
+ ELSE
+ IF(I.EQ.8) WID2=WIDS(17,2)*WIDS(18,3)
+ ENDIF
+ ELSEIF(I.EQ.9) THEN
+C...H+/- -> W+/- + h0.
+ WDTP(I)=FAC*PARU(195)**2*0.5D0*SQRT(MAX(0D0,
+ & (1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ IF(KFLR.GT.0) WID2=WIDS(24,2)*WIDS(25,2)
+ IF(KFLR.LT.0) WID2=WIDS(24,3)*WIDS(25,2)
+
+CMRENNA++
+ ELSE
+C...Add in SUSY decays (two-body) by rescaling by phase space factor.
+ RM10=RM1*SH/PMR**2
+ RM20=RM2*SH/PMR**2
+ WFAC0=1D0+RM10**2+RM20**2-2D0*(RM10+RM20+RM10*RM20)
+ WFAC=1D0+RM1**2+RM2**2-2D0*(RM1+RM2+RM1*RM2)
+ IF(WFAC.LE.0D0 .OR. WFAC0.LE.0D0) THEN
+ WFAC=0D0
+ ELSE
+ WFAC=WFAC/WFAC0
+ ENDIF
+ WDTP(I)=PMAS(KC,2)*BRAT(IDC)*(SHR/PMR)*SQRT(WFAC)
+CMRENNA--
+ KSGN1=2
+ IF(KFLS*KFDP(IDC,1).LT.0.AND.KCHG(KFC1,3).EQ.1) KSGN1=3
+ KSGN2=2
+ IF(KFLS*KFDP(IDC,2).LT.0.AND.KCHG(KFC2,3).EQ.1) KSGN2=3
+ WID2=WIDS(KFC1,KSGN1)*WIDS(KFC2,KSGN2)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 310 CONTINUE
+
+ ELSEIF(KFLA.EQ.41) THEN
+C...R:
+ FAC=(AEM/(12D0*XW))*SHR
+ DO 320 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 320
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 320
+ WID2=1D0
+ IF(I.LE.6) THEN
+C...R -> q + qbar'
+ FCOF=3D0*RADC
+ ELSEIF(I.LE.9) THEN
+C...R -> l+ + l'-
+ FCOF=1D0
+ ENDIF
+ WDTP(I)=FAC*FCOF*(2D0-RM1-RM2-(RM1-RM2)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ IF(KFLR.GT.0) THEN
+ IF(I.EQ.4) WID2=WIDS(6,3)
+ IF(I.EQ.5) WID2=WIDS(7,3)
+ IF(I.EQ.6) WID2=WIDS(6,2)*WIDS(8,3)
+ IF(I.EQ.9) WID2=WIDS(17,3)
+ ELSE
+ IF(I.EQ.4) WID2=WIDS(6,2)
+ IF(I.EQ.5) WID2=WIDS(7,2)
+ IF(I.EQ.6) WID2=WIDS(6,3)*WIDS(8,2)
+ IF(I.EQ.9) WID2=WIDS(17,2)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 320 CONTINUE
+
+ ELSEIF(KFLA.EQ.42) THEN
+C...LQ (leptoquark).
+ FAC=(AEM/4D0)*PARU(151)*SHR
+ DO 330 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 330
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 330
+ WDTP(I)=FAC*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ WID2=1D0
+ ILQQ=KFDP(IDC,1)*ISIGN(1,KFLR)
+ IF(ILQQ.GE.6) WID2=WIDS(ILQQ,2)
+ IF(ILQQ.LE.-6) WID2=WIDS(-ILQQ,3)
+ ILQL=KFDP(IDC,2)*ISIGN(1,KFLR)
+ IF(ILQL.GE.17) WID2=WID2*WIDS(ILQL,2)
+ IF(ILQL.LE.-17) WID2=WID2*WIDS(-ILQL,3)
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 330 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+111.OR.KFLA.EQ.KTECHN+221) THEN
+C...Techni-pi0 and techni-pi0':
+ FAC=(1D0/(32D0*PARU(1)*RTCM(1)**2))*SHR
+ DO 340 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 340
+ PM1=PMAS(PYCOMP(KFDP(IDC,1)),1)
+ PM2=PMAS(PYCOMP(KFDP(IDC,2)),1)
+ RM1=PM1**2/SH
+ RM2=PM2**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 340
+ WID2=1D0
+C...pi_tc -> g + g
+ IF(I.EQ.8) THEN
+ FACP=(AS/(4D0*PARU(1))*ITCM(1)/RTCM(1))**2
+ & /(8D0*PARU(1))*SH*SHR
+ IF(KFLA.EQ.KTECHN+111) THEN
+ FACP=FACP*RTCM(9)
+ ELSE
+ FACP=FACP*RTCM(10)
+ ENDIF
+ WDTP(I)=FACP
+ ELSE
+C...pi_tc -> f + fbar.
+ FCOF=1D0
+ IKA=IABS(KFDP(IDC,1))
+ IF(IKA.LT.10) FCOF=3D0*RADC
+ HM1=PM1
+ HM2=PM2
+ IF(IKA.GE.4.AND.IKA.LE.6) THEN
+ FCOF=FCOF*RTCM(1+IKA)**2
+ HM1=PYMRUN(KFDP(IDC,1),SH)
+ HM2=PYMRUN(KFDP(IDC,2),SH)
+ ELSEIF(IKA.EQ.15) THEN
+ FCOF=FCOF*RTCM(8)**2
+ ENDIF
+ WDTP(I)=FAC*FCOF*(HM1+HM2)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 340 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+211) THEN
+C...pi+_tc
+ FAC=(1D0/(32D0*PARU(1)*RTCM(1)**2))*SHR
+ DO 350 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 350
+ PM1=PMAS(PYCOMP(KFDP(IDC,1)),1)
+ PM2=PMAS(PYCOMP(KFDP(IDC,2)),1)
+ PM3=0D0
+ IF(I.EQ.5) PM3=PMAS(PYCOMP(KFDP(IDC,3)),1)
+ RM1=PM1**2/SH
+ RM2=PM2**2/SH
+ RM3=PM3**2/SH
+ IF(SQRT(RM1)+SQRT(RM2)+SQRT(RM3).GT.1D0) GOTO 350
+ WID2=1D0
+C...pi_tc -> f + f'.
+ FCOF=1D0
+ IF(IABS(KFDP(IDC,1)).LT.10) FCOF=3D0*RADC
+C...pi_tc+ -> W b b~
+ IF(I.EQ.5.AND.SHR.LT.PMAS(6,1)+PMAS(5,1)) THEN
+ FCOF=3D0*RADC
+ XMT2=PMAS(6,1)**2/SH
+ FACP=FAC/(4D0*PARU(1))*FCOF*XMT2*RTCM(7)**2
+ KFC3=PYCOMP(KFDP(IDC,3))
+ CHECK = SQRT(RM1)+SQRT(RM2)+SQRT(RM3)
+ CHECK = SQRT(RM1)
+ T0 = (1D0-CHECK**2)*
+ & (XMT2*(6D0*XMT2**2+3D0*XMT2*RM1-4D0*RM1**2)-
+ & (5D0*XMT2**2+2D0*XMT2*RM1-8D0*RM1**2))/(4D0*XMT2**2)
+ T1 = (1D0-XMT2)*(RM1-XMT2)*((XMT2**2+XMT2*RM1+4D0*RM1**2)
+ & -3D0*XMT2**2*(XMT2+RM1))/(2D0*XMT2**3)
+ T3 = RM1**2/XMT2**3*(3D0*XMT2-4D0*RM1+4D0*XMT2*RM1)
+ WDTP(I)=FACP*(T0 + T1*LOG((XMT2-CHECK**2)/(XMT2-1D0))
+ & +T3*LOG(CHECK))
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)
+ ELSE
+ WID2=WIDS(24,3)
+ ENDIF
+ ELSE
+ FCOF=1D0
+ IKA=IABS(KFDP(IDC,1))
+ IF(IKA.LT.10) FCOF=3D0*RADC
+ HM1=PM1
+ HM2=PM2
+ IF(I.GE.1.AND.I.LE.5) THEN
+ IF(I.LE.2) THEN
+ FCOF=FCOF*RTCM(5)**2
+ ELSEIF(I.LE.4) THEN
+ FCOF=FCOF*RTCM(6)**2
+ ELSEIF(I.EQ.5) THEN
+ FCOF=FCOF*RTCM(7)**2
+ ENDIF
+ HM1=PYMRUN(KFDP(IDC,1),SH)
+ HM2=PYMRUN(KFDP(IDC,2),SH)
+ ELSEIF(I.EQ.8) THEN
+ FCOF=FCOF*RTCM(8)**2
+ ENDIF
+ WDTP(I)=FAC*FCOF*(HM1+HM2)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 350 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+331) THEN
+C...Techni-eta.
+ FAC=(SH/PARP(46)**2)*SHR
+ DO 360 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 360
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 360
+ WID2=1D0
+ IF(I.LE.2) THEN
+ WDTP(I)=FAC*RM1*SQRT(MAX(0D0,1D0-4D0*RM1))/(4D0*PARU(1))
+ IF(I.EQ.2) WID2=WIDS(6,1)
+ ELSE
+ WDTP(I)=FAC*5D0*AS**2/(96D0*PARU(1)**3)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 360 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+113) THEN
+C...Techni-rho0:
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ FAC=(ALPRHT/12D0)*SHR
+ FACF=(1D0/6D0)*(AEM**2/ALPRHT)*SHR
+ SQMZ=PMAS(23,1)**2
+ SQMW=PMAS(24,1)**2
+ SHP=SH
+ CALL PYWIDX(23,SHP,WDTPP,WDTEP)
+ GMMZ=SHR*WDTPP(0)
+ XWRHT=(1D0-2D0*XW)/(4D0*XW*(1D0-XW))
+ BWZR=XWRHT*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ BWZI=XWRHT*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ DO 370 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 370
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 370
+ WID2=1D0
+ IF(I.EQ.1) THEN
+C...rho_tc0 -> W+ + W-.
+C... Multiplied by 2 for W^+_T W^-_L + W^+_L W^-_T
+ WDTP(I)=FAC*RTCM(3)**4*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3+
+ & 2D0*AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM1-RM2)**2-4D0*RM1*RM2 + 6D0*SQMW/SH)*
+ & RTCM(3)**2/4D0/XW/24D0/RTCM(13)**2*SHR**3
+ WID2=WIDS(24,1)
+ ELSEIF(I.EQ.2) THEN
+C...rho_tc0 -> W+ + pi_tc-.
+C... Multiplied by 2 for pi_T^+ W^-_T + pi_T^- W^+_T
+ WDTP(I)=FAC*RTCM(3)**2*(1D0-RTCM(3)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3+
+ & AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM1-RM2)**2-4D0*RM1*RM2 + 6D0*RM1)*
+ & (1D0-RTCM(3)**2)/4D0/XW/24D0/RTCM(13)**2*SHR**3
+ WID2=WIDS(24,2)*WIDS(PYCOMP(KTECHN+211),3)
+ ELSEIF(I.EQ.3) THEN
+C...rho_tc0 -> pi_tc+ + W-.
+ WDTP(I)=FAC*RTCM(3)**2*(1D0-RTCM(3)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3+
+ & AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM1-RM2)**2-4D0*RM1*RM2 + 6D0*RM2)*
+ & (1D0-RTCM(3)**2)/4D0/XW/24D0/RTCM(13)**2*SHR**3
+ WID2=WIDS(PYCOMP(KTECHN+211),2)*WIDS(24,3)
+ ELSEIF(I.EQ.4) THEN
+C...rho_tc0 -> pi_tc+ + pi_tc-.
+ WDTP(I)=FAC*(1D0-RTCM(3)**2)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ WID2=WIDS(PYCOMP(KTECHN+211),1)
+ ELSEIF(I.EQ.5) THEN
+C...rho_tc0 -> gamma + pi_tc0
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*(1D0-RTCM(3)**2)/24D0/RTCM(12)**2*
+ & SHR**3
+ WID2=WIDS(PYCOMP(KTECHN+111),2)
+ ELSEIF(I.EQ.6) THEN
+C...rho_tc0 -> gamma + pi_tc0'
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0-RTCM(4)**2)/24D0/RTCM(12)**2*SHR**3
+ WID2=WIDS(PYCOMP(KTECHN+221),2)
+ ELSEIF(I.EQ.7) THEN
+C...rho_tc0 -> Z0 + pi_tc0
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*(1D0-RTCM(3)**2)/24D0/RTCM(12)**2*
+ & XW/XW1*SHR**3
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+111),2)
+ ELSEIF(I.EQ.8) THEN
+C...rho_tc0 -> Z0 + pi_tc0'
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0-RTCM(4)**2)/24D0/RTCM(12)**2*(1D0-2D0*XW)**2/4D0/
+ & XW/XW1*SHR**3
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+221),2)
+ ELSEIF(I.EQ.9) THEN
+C...rho_tc0 -> gamma + Z0
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*RTCM(3)**2/24D0/RTCM(12)**2*SHR**3
+ WID2=WIDS(23,2)
+ ELSEIF(I.EQ.10) THEN
+C...rho_tc0 -> Z0 + Z0
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*RTCM(3)**2*XW/XW1/24D0/RTCM(12)**2*
+ & SHR**3
+ WID2=WIDS(23,1)
+ ELSE
+C...rho_tc0 -> f + fbar.
+ WID2=1D0
+ IF(I.LE.18) THEN
+ IA=I-10
+ FCOF=3D0*RADC
+ IF(IA.GE.6.AND.IA.LE.8) WID2=WIDS(IA,1)
+ ELSE
+ IA=I-6
+ FCOF=1D0
+ IF(IA.GE.17) WID2=WIDS(IA,1)
+ ENDIF
+ EI=KCHG(IA,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.5D0*(VI+AI)
+ VARI=0.5D0*(VI-AI)
+ WDTP(I)=FACF*FCOF*SQRT(MAX(0D0,1D0-4D0*RM1))*((1D0-RM1)*
+ & ((EI+VALI*BWZR)**2+(VALI*BWZI)**2+
+ & (EI+VARI*BWZR)**2+(VARI*BWZI)**2)+6D0*RM1*(
+ & (EI+VALI*BWZR)*(EI+VARI*BWZR)+VALI*VARI*BWZI**2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 370 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+213) THEN
+C...Techni-rho+/-:
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ FAC=(ALPRHT/12D0)*SHR
+ SQMZ=PMAS(23,1)**2
+ SQMW=PMAS(24,1)**2
+ SHP=SH
+ CALL PYWIDX(24,SHP,WDTPP,WDTEP)
+ GMMW=SHR*WDTPP(0)
+ FACF=(1D0/12D0)*(AEM**2/ALPRHT)*SHR*
+ & (0.125D0/XW**2)*SH**2/((SH-SQMW)**2+GMMW**2)
+ DO 380 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 380
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 380
+ WID2=1D0
+ PCM=.5D0*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+c WDTP(I)=AEM*PCM*(AA2*(PCM**2+1.5D0*RM1)+PCM**2*VA2)
+c & /3D0*SHR**3
+ IF(I.EQ.1) THEN
+C...rho_tc+ -> W+ + Z0.
+C......Goldstone
+ WDTP(I)=FAC*RTCM(3)**4*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ VA2=RTCM(3)**2*(2D0*RTCM(2)-1D0)**2*XW/XW1/RTCM(12)**2
+ AA2=RTCM(3)**2/RTCM(13)**2/4D0/XW/XW1
+C......W_L Z_T
+ WDTP(I)=WDTP(I)+AEM*PCM*(AA2*(PCM**2+1.5D0*RM2)+PCM**2*VA2)
+ & /3D0*SHR**3
+ VA2=0D0
+ AA2=RTCM(3)**2/RTCM(13)**2/4D0/XW
+C......W_T Z_L
+ WDTP(I)=WDTP(I)+AEM*PCM*(AA2*(PCM**2+1.5D0*RM1)+PCM**2*VA2)
+ & /3D0*SHR**3
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)*WIDS(23,2)
+ ELSE
+ WID2=WIDS(24,3)*WIDS(23,2)
+ ENDIF
+ ELSEIF(I.EQ.2) THEN
+C...rho_tc+ -> W+ + pi_tc0.
+ WDTP(I)=FAC*RTCM(3)**2*(1D0-RTCM(3)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3+
+ & AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM1-RM2)**2-4D0*RM1*RM2 + 6D0*SQMW/SH)*
+ & (1D0-RTCM(3)**2)/4D0/XW/24D0/RTCM(13)**2*SHR**3
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)*WIDS(PYCOMP(KTECHN+111),2)
+ ELSE
+ WID2=WIDS(24,3)*WIDS(PYCOMP(KTECHN+111),2)
+ ENDIF
+ ELSEIF(I.EQ.3) THEN
+C...rho_tc+ -> pi_tc+ + Z0.
+ WDTP(I)=FAC*RTCM(3)**2*(1D0-RTCM(3)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3+
+ & AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))*
+ & ((1D0-RM1-RM2)**2-4D0*RM1*RM2 + 6D0*SQMZ/SH)*
+ & (1D0-RTCM(3)**2)/4D0/XW/XW1/24D0/RTCM(13)**2*SHR**3+
+ & AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*(1D0-RTCM(3)**2)/24D0/RTCM(12)**2*
+ & SHR**3*XW/XW1
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(PYCOMP(KTECHN+211),2)*WIDS(23,2)
+ ELSE
+ WID2=WIDS(PYCOMP(KTECHN+211),3)*WIDS(23,2)
+ ENDIF
+ ELSEIF(I.EQ.4) THEN
+C...rho_tc+ -> pi_tc+ + pi_tc0.
+ WDTP(I)=FAC*(1D0-RTCM(3)**2)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(PYCOMP(KTECHN+211),2)*WIDS(PYCOMP(KTECHN+111),2)
+ ELSE
+ WID2=WIDS(PYCOMP(KTECHN+211),3)*WIDS(PYCOMP(KTECHN+111),2)
+ ENDIF
+ ELSEIF(I.EQ.5) THEN
+C...rho_tc+ -> pi_tc+ + gamma
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*(1D0-RTCM(3)**2)/24D0/RTCM(12)**2*
+ & SHR**3
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(PYCOMP(KTECHN+211),2)
+ ELSE
+ WID2=WIDS(PYCOMP(KTECHN+211),3)
+ ENDIF
+ ELSEIF(I.EQ.6) THEN
+C...rho_tc+ -> W+ + pi_tc0'
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0-RTCM(4)**2)/4D0/XW/24D0/RTCM(12)**2*SHR**3
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)*WIDS(PYCOMP(KTECHN+221),2)
+ ELSE
+ WID2=WIDS(24,3)*WIDS(PYCOMP(KTECHN+221),2)
+ ENDIF
+ ELSEIF(I.EQ.7) THEN
+C...rho_tc+ -> W+ + gamma
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*RTCM(3)**2/24D0/RTCM(12)**2*SHR**3
+ IF(KFLR.GT.0) THEN
+ WID2=WIDS(24,2)
+ ELSE
+ WID2=WIDS(24,3)
+ ENDIF
+ ELSE
+C...rho_tc+ -> f + fbar'.
+ IA=I-7
+ WID2=1D0
+ IF(IA.LE.16) THEN
+ FCOF=3D0*RADC*VCKM((IA-1)/4+1,MOD(IA-1,4)+1)
+ IF(KFLR.GT.0) THEN
+ IF(MOD(IA,4).EQ.3) WID2=WIDS(6,2)
+ IF(MOD(IA,4).EQ.0) WID2=WIDS(8,2)
+ IF(IA.GE.13) WID2=WID2*WIDS(7,3)
+ ELSE
+ IF(MOD(IA,4).EQ.3) WID2=WIDS(6,3)
+ IF(MOD(IA,4).EQ.0) WID2=WIDS(8,3)
+ IF(IA.GE.13) WID2=WID2*WIDS(7,2)
+ ENDIF
+ ELSE
+ FCOF=1D0
+ IF(KFLR.GT.0) THEN
+ IF(IA.EQ.20) WID2=WIDS(17,3)*WIDS(18,2)
+ ELSE
+ IF(IA.EQ.20) WID2=WIDS(17,2)*WIDS(18,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FACF*FCOF*(2D0-RM1-RM2-(RM1-RM2)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 380 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+223) THEN
+C...Techni-omega:
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ FAC=(ALPRHT/12D0)*SHR
+ FACF=(1D0/6D0)*(AEM**2/ALPRHT)*SHR*(2D0*RTCM(2)-1D0)**2
+ SQMZ=PMAS(23,1)**2
+ SHP=SH
+ CALL PYWIDX(23,SHP,WDTPP,WDTEP)
+ GMMZ=SHR*WDTPP(0)
+ BWZR=(0.5D0/(1D0-XW))*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ BWZI=-(0.5D0/(1D0-XW))*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ DO 390 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 390
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 390
+ WID2=1D0
+ IF(I.EQ.1) THEN
+C...omega_tc0 -> gamma + pi_tc0.
+ WDTP(I)=AEM/24D0/RTCM(12)**2*(1D0-RTCM(3)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*SHR**3
+ WID2=WIDS(PYCOMP(KTECHN+111),2)
+ ELSEIF(I.EQ.2) THEN
+C...omega_tc0 -> Z0 + pi_tc0
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0-RTCM(3)**2)/24D0/RTCM(12)**2*(1D0-2D0*XW)**2/4D0/
+ & XW/XW1*SHR**3
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+111),2)
+ ELSEIF(I.EQ.3) THEN
+C...omega_tc0 -> gamma + pi_tc0'
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*(1D0-RTCM(4)**2)/24D0/RTCM(12)**2*
+ & SHR**3
+ WID2=WIDS(PYCOMP(KTECHN+221),2)
+ ELSEIF(I.EQ.4) THEN
+C...omega_tc0 -> Z0 + pi_tc0'
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (2D0*RTCM(2)-1D0)**2*(1D0-RTCM(4)**2)/24D0/RTCM(12)**2*
+ & XW/XW1*SHR**3
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+221),2)
+ ELSEIF(I.EQ.5) THEN
+C...omega_tc0 -> W+ + pi_tc-
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0-RTCM(3)**2)/4D0/XW/24D0/RTCM(12)**2*SHR**3+
+ & FAC*RTCM(3)**2*(1D0-RTCM(3)**2)*RTCM(11)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ WID2=WIDS(24,2)*WIDS(PYCOMP(KTECHN+211),3)
+ ELSEIF(I.EQ.6) THEN
+C...omega_tc0 -> pi_tc+ + W-
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & (1D0-RTCM(3)**2)/4D0/XW/24D0/RTCM(12)**2*SHR**3+
+ & FAC*RTCM(3)**2*(1D0-RTCM(3)**2)*RTCM(11)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ WID2=WIDS(24,3)*WIDS(PYCOMP(KTECHN+211),2)
+ ELSEIF(I.EQ.7) THEN
+C...omega_tc0 -> W+ + W-.
+C... Multiplied by 2 for W^+_T W^-_L + W^+_L W^-_T
+ WDTP(I)=FAC*RTCM(3)**4*RTCM(11)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3+
+ & 2D0*AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & RTCM(3)**2/4D0/XW/24D0/RTCM(12)**2*SHR**3
+ WID2=WIDS(24,1)
+ ELSEIF(I.EQ.8) THEN
+C...omega_tc0 -> pi_tc+ + pi_tc-.
+ WDTP(I)=FAC*(1D0-RTCM(3)**2)**2*RTCM(11)**2*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3
+ WID2=WIDS(PYCOMP(KTECHN+211),1)
+C...omega_tc0 -> gamma + Z0
+ ELSEIF(I.EQ.9) THEN
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & RTCM(3)**2/24D0/RTCM(12)**2*SHR**3
+ WID2=WIDS(23,2)
+C...omega_tc0 -> Z0 + Z0
+ ELSEIF(I.EQ.10) THEN
+ WDTP(I)=AEM*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))**3*
+ & RTCM(3)**2*(XW1-XW)**2/XW/XW1/4D0
+ & /24D0/RTCM(12)**2*SHR**3
+ WID2=WIDS(23,1)
+ ELSE
+C...omega_tc0 -> f + fbar.
+ WID2=1D0
+ IF(I.LE.18) THEN
+ IA=I-10
+ FCOF=3D0*RADC
+ IF(IA.GE.6.AND.IA.LE.8) WID2=WIDS(IA,1)
+ ELSE
+ IA=I-8
+ FCOF=1D0
+ IF(IA.GE.17) WID2=WIDS(IA,1)
+ ENDIF
+ EI=KCHG(IA,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=-0.5D0*(VI+AI)
+ VARI=-0.5D0*(VI-AI)
+ WDTP(I)=FACF*FCOF*SQRT(MAX(0D0,1D0-4D0*RM1))*((1D0-RM1)*
+ & ((EI+VALI*BWZR)**2+(VALI*BWZI)**2+
+ & (EI+VARI*BWZR)**2+(VARI*BWZI)**2)+6D0*RM1*(
+ & (EI+VALI*BWZR)*(EI+VARI*BWZR)+VALI*VARI*BWZI**2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 390 CONTINUE
+
+C.....V8 -> quark anti-quark
+ ELSEIF(KFLA.EQ.KTECHN+100021) THEN
+ FAC=AS/6D0*SHR
+ TANT3=RTCM(21)
+ IF(ITCM(2).EQ.0) THEN
+ IMDL=1
+ ELSEIF(ITCM(2).EQ.1) THEN
+ IMDL=2
+ ENDIF
+ DO 400 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 400
+ PM1=PMAS(PYCOMP(KFDP(IDC,1)),1)
+ RM1=PM1**2/SH
+ IF(RM1.GT.0.25D0) GOTO 400
+ WID2=1D0
+ IF(I.EQ.5.OR.I.EQ.6.OR.IMDL.EQ.2) THEN
+ FMIX=1D0/TANT3**2
+ ELSE
+ FMIX=TANT3**2
+ ENDIF
+ WDTP(I)=FAC*(1D0+2D0*RM1)*SQRT(1D0-4D0*RM1)*FMIX
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 400 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+100111.OR.KFLA.EQ.KTECHN+200111) THEN
+ FAC=(1D0/(4D0*PARU(1)*RTCM(1)**2))*SHR
+ CLEBF=0D0
+ DO 410 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 410
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 410
+ WID2=1D0
+C...pi_tc -> g + g
+ IF(I.EQ.7) THEN
+ IF(KFLA.EQ.KTECHN+100111) THEN
+ CLEBG=4D0/3D0
+ ELSE
+ CLEBG=5D0/3D0
+ ENDIF
+ FACP=(AS/(8D0*PARU(1))*ITCM(1)/RTCM(1))**2
+ & /(2D0*PARU(1))*SH*SHR*CLEBG
+ WDTP(I)=FACP
+ ELSE
+C...pi_tc -> f + fbar.
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ FCOF=1D0
+ IKA=IABS(KFDP(IDC,1))
+ IF(IKA.LT.10) FCOF=3D0*RADC
+ HM1=PYMRUN(KFDP(IDC,1),SH)
+ WDTP(I)=FAC*FCOF*HM1**2*CLEBF*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 410 CONTINUE
+
+ ELSEIF(KFLA.GE.KTECHN+100113.AND.KFLA.LE.KTECHN+400113) THEN
+ FAC=AS/6D0*SHR
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ TANT3=RTCM(21)
+ SIN2T=2D0*TANT3/(TANT3**2+1D0)
+ SINT3=TANT3/SQRT(TANT3**2+1D0)
+ CSXPP=RTCM(22)
+ RM82=RTCM(27)**2
+ X12=(RTCM(29)*SQRT(1D0-RTCM(29)**2)*COS(RTCM(30))+
+ & RTCM(31)*SQRT(1D0-RTCM(31)**2)*COS(RTCM(32)))/SQRT(2D0)
+ X21=(RTCM(29)*SQRT(1D0-RTCM(29)**2)*SIN(RTCM(30))+
+ & RTCM(31)*SQRT(1D0-RTCM(31)**2)*SIN(RTCM(32)))/SQRT(2D0)
+ X11=(.25D0*(RTCM(29)**2+RTCM(31)**2+2D0)-
+ & SINT3**2)*2D0
+ X22=(.25D0*(2D0-RTCM(29)**2-RTCM(31)**2)-
+ & SINT3**2)*2D0
+ CALL PYWIDX(KTECHN+100021,SH,WDTPP,WDTEP)
+
+ IF(WDTPP(0).GT.RTCM(33)*SHR) WDTPP(0)=RTCM(33)*SHR
+ GMV8=SHR*WDTPP(0)
+ RMV8=PMAS(PYCOMP(KTECHN+100021),1)
+ FV8RE=SH*(SH-RMV8**2)/((SH-RMV8**2)**2+GMV8**2)
+ FV8IM=SH*GMV8/((SH-RMV8**2)**2+GMV8**2)
+ IF(ITCM(2).EQ.0) THEN
+ IMDL=1
+ ELSE
+ IMDL=2
+ ENDIF
+ DO 420 I=1,MDCY(KC,3)
+ IF(I.EQ.7.AND.(KFLA.EQ.KTECHN+200113.OR.
+ & KFLA.EQ.KTECHN+300113)) GOTO 420
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 420
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 420
+ WID2=1D0
+ IF(I.LE.6) THEN
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ XIG=1D0
+ IF(KFLA.EQ.KTECHN+200113) THEN
+ XIG=0D0
+ XIJ=X12
+ ELSEIF(KFLA.EQ.KTECHN+300113) THEN
+ XIG=0D0
+ XIJ=X21
+ ELSEIF(KFLA.EQ.KTECHN+100113) THEN
+ XIJ=X11
+ ELSE
+ XIJ=X22
+ ENDIF
+ IF(I.EQ.5.OR.I.EQ.6.OR.IMDL.EQ.2) THEN
+ FMIX=1D0/TANT3/SIN2T
+ ELSE
+ FMIX=-TANT3/SIN2T
+ ENDIF
+ XFAC=(XIG+FMIX*XIJ*FV8RE)**2+(FMIX*XIJ*FV8IM)**2
+ WDTP(I)=FAC*(1D0+2D0*RM1)*SQRT(1D0-4D0*RM1)*AS/ALPRHT*XFAC
+ ELSEIF(I.EQ.7) THEN
+ WDTP(I)=SHR*AS**2/(4D0*ALPRHT)
+ ELSEIF(KFLA.EQ.KTECHN+400113.AND.I.LE.9) THEN
+ PSH=SHR*(1D0-RM1)/2D0
+ WDTP(I)=AS/9D0*PSH**3/RM82
+ IF(I.EQ.8) THEN
+ WDTP(I)=2D0*WDTP(I)*CSXPP**2
+ WID2=WIDS(PYCOMP(KFDP(IDC,1)),2)
+ ELSE
+ WDTP(I)=5D0*WDTP(I)
+ WID2=WIDS(PYCOMP(KFDP(IDC,1)),2)
+ ENDIF
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 420 CONTINUE
+
+ ELSEIF(KFLA.EQ.KEXCIT+1) THEN
+C...d* excited quark.
+ FAC=(SH/RTCM(41)**2)*SHR
+ DO 430 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 430
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 430
+ WID2=1D0
+ IF(I.EQ.1) THEN
+C...d* -> g + d.
+ WDTP(I)=FAC*AS*RTCM(45)**2/3D0
+ WID2=1D0
+ ELSEIF(I.EQ.2) THEN
+C...d* -> gamma + d.
+ QF=-RTCM(43)/2D0+RTCM(44)/6D0
+ WDTP(I)=FAC*AEM*QF**2/4D0
+ WID2=1D0
+ ELSEIF(I.EQ.3) THEN
+C...d* -> Z0 + d.
+ QF=-RTCM(43)*XW1/2D0-RTCM(44)*XW/6D0
+ WDTP(I)=FAC*AEM*QF**2/(8D0*XW*XW1)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ WID2=WIDS(23,2)
+ ELSEIF(I.EQ.4) THEN
+C...d* -> W- + u.
+ WDTP(I)=FAC*AEM*RTCM(43)**2/(16D0*XW)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ IF(KFLR.GT.0) WID2=WIDS(24,3)
+ IF(KFLR.LT.0) WID2=WIDS(24,2)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 430 CONTINUE
+
+ ELSEIF(KFLA.EQ.KEXCIT+2) THEN
+C...u* excited quark.
+ FAC=(SH/RTCM(41)**2)*SHR
+ DO 440 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 440
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 440
+ WID2=1D0
+ IF(I.EQ.1) THEN
+C...u* -> g + u.
+ WDTP(I)=FAC*AS*RTCM(45)**2/3D0
+ WID2=1D0
+ ELSEIF(I.EQ.2) THEN
+C...u* -> gamma + u.
+ QF=RTCM(43)/2D0+RTCM(44)/6D0
+ WDTP(I)=FAC*AEM*QF**2/4D0
+ WID2=1D0
+ ELSEIF(I.EQ.3) THEN
+C...u* -> Z0 + u.
+ QF=RTCM(43)*XW1/2D0-RTCM(44)*XW/6D0
+ WDTP(I)=FAC*AEM*QF**2/(8D0*XW*XW1)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ WID2=WIDS(23,2)
+ ELSEIF(I.EQ.4) THEN
+C...u* -> W+ + d.
+ WDTP(I)=FAC*AEM*RTCM(43)**2/(16D0*XW)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ IF(KFLR.GT.0) WID2=WIDS(24,2)
+ IF(KFLR.LT.0) WID2=WIDS(24,3)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 440 CONTINUE
+
+ ELSEIF(KFLA.EQ.KEXCIT+11) THEN
+C...e* excited lepton.
+ FAC=(SH/RTCM(41)**2)*SHR
+ DO 450 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 450
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 450
+ WID2=1D0
+ IF(I.EQ.1) THEN
+C...e* -> gamma + e.
+ QF=-RTCM(43)/2D0-RTCM(44)/2D0
+ WDTP(I)=FAC*AEM*QF**2/4D0
+ WID2=1D0
+ ELSEIF(I.EQ.2) THEN
+C...e* -> Z0 + e.
+ QF=-RTCM(43)*XW1/2D0+RTCM(44)*XW/2D0
+ WDTP(I)=FAC*AEM*QF**2/(8D0*XW*XW1)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ WID2=WIDS(23,2)
+ ELSEIF(I.EQ.3) THEN
+C...e* -> W- + nu.
+ WDTP(I)=FAC*AEM*RTCM(43)**2/(16D0*XW)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ IF(KFLR.GT.0) WID2=WIDS(24,3)
+ IF(KFLR.LT.0) WID2=WIDS(24,2)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 450 CONTINUE
+
+ ELSEIF(KFLA.EQ.KEXCIT+12) THEN
+C...nu*_e excited neutrino.
+ FAC=(SH/RTCM(41)**2)*SHR
+ DO 460 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 460
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 460
+ WID2=1D0
+ IF(I.EQ.1) THEN
+C...nu*_e -> Z0 + nu*_e.
+ QF=RTCM(43)*XW1/2D0+RTCM(44)*XW/2D0
+ WDTP(I)=FAC*AEM*QF**2/(8D0*XW*XW1)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ WID2=WIDS(23,2)
+ ELSEIF(I.EQ.2) THEN
+C...nu*_e -> W+ + e.
+ WDTP(I)=FAC*AEM*RTCM(43)**2/(16D0*XW)*
+ & (1D0-RM1)**2*(2D0+RM1)
+ IF(KFLR.GT.0) WID2=WIDS(24,2)
+ IF(KFLR.LT.0) WID2=WIDS(24,3)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 460 CONTINUE
+
+ ELSEIF(KFLA.EQ.KDIMEN+39) THEN
+C...G* (graviton resonance):
+ FAC=(PARP(50)**2/PARU(1))*SHR
+ DO 470 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 470
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 470
+ WID2=1D0
+ IF(I.LE.8) THEN
+C...G* -> q + qbar
+ FCOF=3D0*RADC
+ IF(I.GE.6.AND.MSTP(35).GE.1) FCOF=FCOF*
+ & PYHFTH(SH,SH*RM1,1D0)
+ WDTP(I)=FAC*FCOF*SQRT(MAX(0D0,1D0-4D0*RM1))**3*
+ & (1D0+8D0*RM1/3D0)/320D0
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ IF(I.EQ.7.OR.I.EQ.8) WID2=WIDS(I,1)
+ ELSEIF(I.LE.16) THEN
+C...G* -> l+ + l-, nu + nubar
+ FCOF=1D0
+ WDTP(I)=FAC*SQRT(MAX(0D0,1D0-4D0*RM1))**3*
+ & (1D0+8D0*RM1/3D0)/320D0
+ IF(I.EQ.15.OR.I.EQ.16) WID2=WIDS(2+I,1)
+ ELSEIF(I.EQ.17) THEN
+C...G* -> g + g.
+ WDTP(I)=FAC/20D0
+ ELSEIF(I.EQ.18) THEN
+C...G* -> gamma + gamma.
+ WDTP(I)=FAC/160D0
+ ELSEIF(I.EQ.19) THEN
+C...G* -> Z0 + Z0.
+ WDTP(I)=FAC*SQRT(MAX(0D0,1D0-4D0*RM1))*(13D0/12D0+
+ & 14D0*RM1/3D0+4D0*RM1**2)/160D0
+ WID2=WIDS(23,1)
+ ELSEIF(I.EQ.20) THEN
+C...G* -> W+ + W-.
+ WDTP(I)=FAC*SQRT(MAX(0D0,1D0-4D0*RM1))*(13D0/12D0+
+ & 14D0*RM1/3D0+4D0*RM1**2)/80D0
+ WID2=WIDS(24,1)
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 470 CONTINUE
+
+ ELSEIF(KFLA.EQ.9900012.OR.KFLA.EQ.9900014.OR.KFLA.EQ.9900016) THEN
+C...nu_eR, nu_muR, nu_tauR: righthanded Majorana neutrinos.
+ PMWR=MAX(1.001D0*SHR,PMAS(PYCOMP(9900024),1))
+ FAC=(AEM**2/(768D0*PARU(1)*XW**2))*SHR**5/PMWR**4
+ DO 480 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 480
+ PM1=PMAS(PYCOMP(KFDP(IDC,1)),1)
+ PM2=PMAS(PYCOMP(KFDP(IDC,2)),1)
+ PM3=PMAS(PYCOMP(KFDP(IDC,3)),1)
+ IF(PM1+PM2+PM3.GE.SHR) GOTO 480
+ WID2=1D0
+ IF(I.LE.9) THEN
+C...nu_lR -> l- qbar q'
+ FCOF=3D0*RADC*VCKM((I-1)/3+1,MOD(I-1,3)+1)
+ IF(MOD(I,3).EQ.0) WID2=WIDS(6,2)
+ ELSEIF(I.LE.18) THEN
+C...nu_lR -> l+ q qbar'
+ FCOF=3D0*RADC*VCKM((I-10)/3+1,MOD(I-10,3)+1)
+ IF(MOD(I-9,3).EQ.0) WID2=WIDS(6,3)
+ ELSE
+C...nu_lR -> l- l'+ nu_lR' + charge conjugate.
+ FCOF=1D0
+ WID2=WIDS(PYCOMP(KFDP(IDC,3)),2)
+ ENDIF
+ X=(PM1+PM2+PM3)/SHR
+ FX=1D0-8D0*X**2+8D0*X**6-X**8-24D0*X**4*LOG(X)
+ Y=(SHR/PMWR)**2
+ FY=(12D0*(1D0-Y)*LOG(1D0-Y)+12D0*Y-6D0*Y**2-2D0*Y**3)/Y**4
+ WDTP(I)=FAC*FCOF*FX*FY
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 480 CONTINUE
+
+ ELSEIF(KFLA.EQ.9900023) THEN
+C...Z_R0:
+ FAC=(AEM/(48D0*XW*XW1*(1D0-2D0*XW)))*SHR
+ DO 490 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 490
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 490
+ WID2=1D0
+ SYMMET=1D0
+ IF(I.LE.6) THEN
+C...Z_R0 -> q + qbar
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)*(1D0-2D0*XW)
+ VF=SIGN(1D0,EF+0.1D0)-4D0*EF*XW
+ FCOF=3D0*RADC
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ ELSEIF(I.EQ.7.OR.I.EQ.10.OR.I.EQ.13) THEN
+C...Z_R0 -> l+ + l-
+ AF=-(1D0-2D0*XW)
+ VF=-1D0+4D0*XW
+ FCOF=1D0
+ ELSEIF(I.EQ.8.OR.I.EQ.11.OR.I.EQ.14) THEN
+C...Z0 -> nu_L + nu_Lbar, assumed Majorana.
+ AF=-2D0*XW
+ VF=0D0
+ FCOF=1D0
+ SYMMET=0.5D0
+ ELSEIF(I.LE.15) THEN
+C...Z0 -> nu_R + nu_R, assumed Majorana.
+ AF=2D0*XW1
+ VF=0D0
+ FCOF=1D0
+ WID2=WIDS(PYCOMP(KFDP(IDC,1)),1)
+ SYMMET=0.5D0
+ ENDIF
+ WDTP(I)=FAC*FCOF*(VF**2*(1D0+2D0*RM1)+AF**2*(1D0-4D0*RM1))*
+ & SQRT(MAX(0D0,1D0-4D0*RM1))*SYMMET
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 490 CONTINUE
+
+ ELSEIF(KFLA.EQ.9900024) THEN
+C...W_R+/-:
+ FAC=(AEM/(24D0*XW))*SHR
+ DO 500 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 500
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 500
+ WID2=1D0
+ IF(I.LE.9) THEN
+C...W_R+/- -> q + qbar'
+ FCOF=3D0*RADC*VCKM((I-1)/3+1,MOD(I-1,3)+1)
+ IF(KFLR.GT.0) THEN
+ IF(MOD(I,3).EQ.0) WID2=WIDS(6,2)
+ ELSE
+ IF(MOD(I,3).EQ.0) WID2=WIDS(6,3)
+ ENDIF
+ ELSEIF(I.LE.12) THEN
+C...W_R+/- -> l+/- + nu_R
+ FCOF=1D0
+ ENDIF
+ WDTP(I)=FAC*FCOF*(2D0-RM1-RM2-(RM1-RM2)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 500 CONTINUE
+
+ ELSEIF(KFLA.EQ.9900041) THEN
+C...H_L++/--:
+ FAC=(1D0/(8D0*PARU(1)))*SHR
+ DO 510 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 510
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 510
+ WID2=1D0
+ IF(I.LE.6) THEN
+C...H_L++/-- -> l+/- + l'+/-
+ FCOF=PARP(180+3*((IABS(KFDP(IDC,1))-11)/2)+
+ & (IABS(KFDP(IDC,2))-9)/2)**2
+ IF(KFDP(IDC,1).NE.KFDP(IDC,2)) FCOF=2D0*FCOF
+ ELSEIF(I.EQ.7) THEN
+C...H_L++/-- -> W_L+/- + W_L+/-
+ FCOF=0.5D0*PARP(190)**4*PARP(192)**2/PMAS(24,1)**2*
+ & (3D0*RM1+0.25D0/RM1-1D0)
+ WID2=WIDS(24,4+(1-KFLS)/2)
+ ENDIF
+ WDTP(I)=FAC*FCOF*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 510 CONTINUE
+
+ ELSEIF(KFLA.EQ.9900042) THEN
+C...H_R++/--:
+ FAC=(1D0/(8D0*PARU(1)))*SHR
+ DO 520 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 520
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 520
+ WID2=1D0
+ IF(I.LE.6) THEN
+C...H_R++/-- -> l+/- + l'+/-
+ FCOF=PARP(180+3*((IABS(KFDP(IDC,1))-11)/2)+
+ & (IABS(KFDP(IDC,2))-9)/2)**2
+ IF(KFDP(IDC,1).NE.KFDP(IDC,2)) FCOF=2D0*FCOF
+ ELSEIF(I.EQ.7) THEN
+C...H_R++/-- -> W_R+/- + W_R+/-
+ FCOF=PARP(191)**2*(3D0*RM1+0.25D0/RM1-1D0)
+ WID2=WIDS(PYCOMP(9900024),4+(1-KFLS)/2)
+ ENDIF
+ WDTP(I)=FAC*FCOF*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 520 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+115) THEN
+C...Techni-a2:
+C...Need to update to alpha_rho
+ ALPRHT=2.16D0*(3D0/ITCM(1))*RTCM(47)**2
+ FAC=(ALPRHT/12D0)*SHR
+ FACF=(1D0/6D0)*(AEM**2/ALPRHT)*SHR
+ SQMZ=PMAS(23,1)**2
+ SQMW=PMAS(24,1)**2
+ SHP=SH
+ CALL PYWIDX(23,SHP,WDTPP,WDTEP)
+ GMMZ=SHR*WDTPP(0)
+ XWRHT=1D0/(4D0*XW*(1D0-XW))
+ BWZR=XWRHT*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ BWZI=XWRHT*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ DO 530 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 530
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 530
+ WID2=1D0
+ PCM=.5D0*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ IF(I.LE.4) THEN
+ FACPV=PCM**2
+ FACPA=PCM**2+1.5D0*RM1
+ VA2=0D0
+ AA2=0D0
+C...a2_tc0 -> W+ + W-
+ IF(I.EQ.1) THEN
+ AA2=2D0*RTCM(3)**2/4D0/XW/RTCM(49)**2
+C...Multiplied by 2 for W^+_T W^-_L + W^+_L W^-_T.(KL)
+ WID2=WIDS(24,1)
+C...a2_tc0 -> W+ + pi_tc- + c.c.
+ ELSEIF(I.EQ.2.OR.I.EQ.3) THEN
+ AA2=(1D0-RTCM(3)**2)/4D0/XW/RTCM(49)**2
+ IF(I.EQ.6) THEN
+ WID2=WIDS(24,2)*WIDS(PYCOMP(KTECHN+211),3)
+ ELSE
+ WID2=WIDS(24,3)*WIDS(PYCOMP(KTECHN+211),2)
+ ENDIF
+ ELSEIF(I.EQ.4) THEN
+C...a2_tc0 -> Z0 + pi_tc0'
+ VA2=(1D0-RTCM(4)**2)/4D0/XW/XW1/RTCM(48)**2
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+221),2)
+ ENDIF
+ WDTP(I)=AEM*SHR**3*PCM/3D0*(VA2*FACPV+AA2*FACPA)
+ ELSEIF(I.GE.5.AND.I.LE.10) THEN
+ FACPV=PCM**2*(1D0+RM1+RM2)+3D0*RM1*RM2
+ FACPA=PCM**2*(1D0+RM1+RM2)
+ VA2=0D0
+ AA2=0D0
+ IF(I.EQ.5) THEN
+C...a_T^0 -> gamma rho_T^0
+ VA2=(2D0*RTCM(2)-1D0)**2/RTCM(50)**4
+ WID2=WIDS(PYCOMP(KTECHN+113),2)
+ ELSEIF(I.EQ.6) THEN
+C...a_T^0 -> gamma omega_T
+ VA2=1D0/RTCM(50)**4
+ WID2=WIDS(PYCOMP(KTECHN+223),2)
+ ELSEIF(I.EQ.7.OR.I.EQ.8) THEN
+C...a_T^0 -> W^+- rho_T^-+
+ AA2=.25D0/XW/RTCM(51)**4
+ IF(I.EQ.7) THEN
+ WID2=WIDS(24,2)*WIDS(PYCOMP(KTECHN+213),3)
+ ELSE
+ WID2=WIDS(24,3)*WIDS(PYCOMP(KTECHN+213),2)
+ ENDIF
+ ELSEIF(I.EQ.9) THEN
+C...a_T^0 -> Z^0 rho_T^0
+ VA2=(2D0*RTCM(2)-1D0)**2*XW/XW1/RTCM(50)**4
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+113),2)
+ ELSEIF(I.EQ.10) THEN
+C...a_T^0 -> Z^0 omega_T
+ VA2=.25D0*(1D0-2D0*XW)**2/XW/XW1/RTCM(50)**4
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+223),2)
+ ENDIF
+ WDTP(I)=AEM*SHR**5*PCM/12D0*(VA2*FACPV+AA2*FACPA)
+ ELSE
+C...a2_tc0 -> f + fbar.
+ WID2=1D0
+ IF(I.LE.18) THEN
+ IA=I-10
+ FCOF=3D0*RADC
+ IF(IA.GE.6.AND.IA.LE.8) WID2=WIDS(IA,1)
+ ELSE
+ IA=I-8
+ FCOF=1D0
+ IF(IA.GE.17) WID2=WIDS(IA,1)
+ ENDIF
+ EI=KCHG(IA,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.5D0*(VI+AI)
+ VARI=0.5D0*(VI-AI)
+ WDTP(I)=FACF*FCOF*SQRT(MAX(0D0,1D0-4D0*RM1))*((1D0-RM1)*
+ & ((VALI*BWZR)**2+(VALI*BWZI)**2+
+ & (VARI*BWZR)**2+(VARI*BWZI)**2)+6D0*RM1*(
+ & (VALI*BWZR)*(VARI*BWZR)+VALI*VARI*BWZI**2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 530 CONTINUE
+
+ ELSEIF(KFLA.EQ.KTECHN+215) THEN
+C...Techni-a2+/-:
+ ALPRHT=2.16D0*(3D0/ITCM(1))*RTCM(47)**2
+ FAC=(ALPRHT/12D0)*SHR
+ SQMZ=PMAS(23,1)**2
+ SQMW=PMAS(24,1)**2
+ SHP=SH
+ CALL PYWIDX(24,SHP,WDTPP,WDTEP)
+ GMMW=SHR*WDTPP(0)
+ FACF=(1D0/12D0)*(AEM**2/ALPRHT)*SHR*
+ & (0.125D0/XW**2)*SH**2/((SH-SQMW)**2+GMMW**2)
+ DO 540 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 540
+ RM1=PMAS(PYCOMP(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(PYCOMP(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 540
+ WID2=1D0
+ PCM=.5D0*SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ IF(KFLR.GT.0) THEN
+ ICHANN=2
+ ELSE
+ ICHANN=3
+ ENDIF
+ IF(I.LE.7) THEN
+ AA2=0
+ VA2=0
+C...a2_tc+ -> gamma + W+.
+ IF(I.EQ.1) THEN
+ AA2=RTCM(3)**2/RTCM(49)**2
+ WID2=WIDS(24,ICHANN)
+C...a2_tc+ -> gamma + pi_tc+.
+ ELSEIF(I.EQ.2) THEN
+ AA2=(1D0-RTCM(3)**2)/RTCM(49)**2
+ WID2=WIDS(PYCOMP(KTECHN+211),ICHANN)
+C...a2_tc+ -> W+ + Z
+ ELSEIF(I.EQ.3) THEN
+ AA2=RTCM(3)**2*(1D0/4D0/XW1 +
+ & (XW-XW1)**2/4./XW/XW1)/RTCM(49)**2
+ WID2=WIDS(24,ICHANN)*WIDS(23,2)
+C...a2_tc+ -> W+ + pi_tc0.
+ ELSEIF(I.EQ.4) THEN
+ AA2=(1D0-RTCM(3)**2)/4D0/XW/RTCM(49)**2
+ WID2=WIDS(24,ICHANN)*WIDS(PYCOMP(KTECHN+111),2)
+C...a2_tc+ -> W+ + pi_tc'0.
+ ELSEIF(I.EQ.5) THEN
+ VA2=(1D0-RTCM(4)**2)/4D0/XW/RTCM(48)**2
+ WID2=WIDS(24,ICHANN)*WIDS(PYCOMP(KTECHN+221),2)
+C...a2_tc+ -> Z0 + pi_tc+.
+ ELSEIF(I.EQ.6) THEN
+ AA2=(1D0-RTCM(3)**2)/4D0/XW/XW1*(1D0-2D0*XW)**2/
+ & RTCM(49)**2
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+211),ICHANN)
+ ENDIF
+ WDTP(I)=AEM*PCM*(AA2*(PCM**2+1.5D0*RM1)+PCM**2*VA2)
+ & /3D0*SHR**3
+ ELSEIF(I.LE.10) THEN
+ FACPV=PCM**2*(1D0+RM1+RM2)+3D0*RM1*RM2
+ FACPA=PCM**2*(1D0+RM1+RM2)
+ VA2=0D0
+ AA2=0D0
+C...a2_tc+ -> gamma + rho_tc+
+ IF(I.EQ.7) THEN
+ VA2=(2D0*RTCM(2)-1D0)**2/RTCM(50)**4
+ WID2=WIDS(PYCOMP(KTECHN+213),ICHANN)
+C...a2_tc+ -> W+ + rho_T^0
+ ELSEIF(I.EQ.8) THEN
+ AA2=1D0/(4D0*XW)/RTCM(51)**4
+ WID2=WIDS(24,ICHANN)*WIDS(PYCOMP(KTECHN+113),2)
+C...a2_tc+ -> W+ + omega_T
+ ELSEIF(I.EQ.9) THEN
+ VA2=.25D0/XW/RTCM(50)**4
+ WID2=WIDS(24,ICHANN)*WIDS(PYCOMP(KTECHN+223),2)
+C...a2_tc+ -> Z^0 + rho_T^+
+ ELSEIF(I.EQ.10) THEN
+ VA2=(2D0*RTCM(2)-1D0)**2*XW/XW1/RTCM(50)**4
+ AA2=1D0/(4D0*XW*XW1)/RTCM(51)**4
+ WID2=WIDS(23,2)*WIDS(PYCOMP(KTECHN+213),ICHANN)
+ ENDIF
+ WDTP(I)=AEM*SHR**5*PCM/12D0*(VA2*FACPV+AA2*FACPA)
+ ELSE
+C...a2_tc+ -> f + fbar'.
+ IA=I-10
+ WID2=1D0
+ IF(IA.LE.16) THEN
+ FCOF=3D0*RADC*VCKM((IA-1)/4+1,MOD(IA-1,4)+1)
+ IF(KFLR.GT.0) THEN
+ IF(MOD(IA,4).EQ.3) WID2=WIDS(6,2)
+ IF(MOD(IA,4).EQ.0) WID2=WIDS(8,2)
+ IF(IA.GE.13) WID2=WID2*WIDS(7,3)
+ ELSE
+ IF(MOD(IA,4).EQ.3) WID2=WIDS(6,3)
+ IF(MOD(IA,4).EQ.0) WID2=WIDS(8,3)
+ IF(IA.GE.13) WID2=WID2*WIDS(7,2)
+ ENDIF
+ ELSE
+ FCOF=1D0
+ IF(KFLR.GT.0) THEN
+ IF(IA.EQ.20) WID2=WIDS(17,3)*WIDS(18,2)
+ ELSE
+ IF(IA.EQ.20) WID2=WIDS(17,2)*WIDS(18,3)
+ ENDIF
+ ENDIF
+ WDTP(I)=FACF*FCOF*(2D0-RM1-RM2-(RM1-RM2)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ ENDIF
+ WDTP(I)=FUDGE*WDTP(I)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ IF(MDME(IDC,1).GT.0) THEN
+ WDTE(I,MDME(IDC,1))=WDTP(I)*WID2
+ WDTE(0,MDME(IDC,1))=WDTE(0,MDME(IDC,1))+WDTE(I,MDME(IDC,1))
+ WDTE(I,0)=WDTE(I,MDME(IDC,1))
+ WDTE(0,0)=WDTE(0,0)+WDTE(I,0)
+ ENDIF
+ 540 CONTINUE
+
+ ENDIF
+ MINT(61)=0
+ MINT(62)=0
+ MINT(63)=0
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYOFSH
+C...Calculates partial width and differential cross-section maxima
+C...of channels/processes not allowed on mass-shell, and selects
+C...masses in such channels/processes.
+
+ SUBROUTINE PYOFSH(MOFSH,KFMO,KFD1,KFD2,PMMO,RET1,RET2)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT2/,/PYINT5/
+C...Local arrays.
+ DIMENSION KFD(2),MBW(2),PMD(2),PGD(2),PMG(2),PML(2),PMU(2),
+ &PMH(2),ATL(2),ATU(2),ATH(2),RMG(2),INX1(100),XPT1(100),
+ &FPT1(100),INX2(100),XPT2(100),FPT2(100),WDTP(0:400),
+ &WDTE(0:400,0:5)
+
+C...Find if particles equal, maximum mass, matrix elements, etc.
+ MINT(51)=0
+ ISUB=MINT(1)
+ KFD(1)=IABS(KFD1)
+ KFD(2)=IABS(KFD2)
+ MEQL=0
+ IF(KFD(1).EQ.KFD(2)) MEQL=1
+ MLM=0
+ IF(MOFSH.GE.2.AND.MEQL.EQ.1) MLM=INT(1.5D0+PYR(0))
+ IF(MOFSH.LE.2.OR.MOFSH.EQ.5) THEN
+ NOFF=44
+ PMMX=PMMO
+ ELSE
+ NOFF=40
+ PMMX=VINT(1)
+ IF(CKIN(2).GT.CKIN(1)) PMMX=MIN(CKIN(2),VINT(1))
+ ENDIF
+ MMED=0
+ IF((KFMO.EQ.25.OR.KFMO.EQ.35.OR.KFMO.EQ.36).AND.MEQL.EQ.1.AND.
+ &(KFD(1).EQ.23.OR.KFD(1).EQ.24)) MMED=1
+ IF((KFMO.EQ.32.OR.IABS(KFMO).EQ.34).AND.(KFD(1).EQ.23.OR.
+ &KFD(1).EQ.24).AND.(KFD(2).EQ.23.OR.KFD(2).EQ.24)) MMED=2
+ IF((KFMO.EQ.32.OR.IABS(KFMO).EQ.34).AND.(KFD(2).EQ.25.OR.
+ &KFD(2).EQ.35.OR.KFD(2).EQ.36)) MMED=3
+ LOOP=1
+
+C...Find where Breit-Wigners are required, else select discrete masses.
+ 100 DO 110 I=1,2
+ KFCA=PYCOMP(KFD(I))
+ IF(KFCA.GT.0) THEN
+ PMD(I)=PMAS(KFCA,1)
+ PGD(I)=PMAS(KFCA,2)
+ ELSE
+ PMD(I)=0D0
+ PGD(I)=0D0
+ ENDIF
+ IF(MSTP(42).LE.0.OR.PGD(I).LT.PARP(41)) THEN
+ MBW(I)=0
+ PMG(I)=PMD(I)
+ RMG(I)=(PMG(I)/PMMX)**2
+ ELSE
+ MBW(I)=1
+ ENDIF
+ 110 CONTINUE
+
+C...Find allowed mass range and Breit-Wigner parameters.
+ DO 120 I=1,2
+ IF(MOFSH.EQ.1.AND.LOOP.EQ.1.AND.MBW(I).EQ.1) THEN
+ PML(I)=PARP(42)
+ PMU(I)=PMMX-PARP(42)
+ IF(MBW(3-I).EQ.0) PMU(I)=MIN(PMU(I),PMMX-PMD(3-I))
+ IF(PMU(I).LT.PML(I)+PARJ(64)) MBW(I)=-1
+ ELSEIF(MBW(I).EQ.1.AND.MOFSH.NE.5) THEN
+ ILM=I
+ IF(MLM.EQ.2) ILM=3-I
+ PML(I)=MAX(CKIN(NOFF+2*ILM-1),PARP(42))
+ IF(MBW(3-I).EQ.0) THEN
+ PMU(I)=PMMX-PMD(3-I)
+ ELSE
+ PMU(I)=PMMX-MAX(CKIN(NOFF+5-2*ILM),PARP(42))
+ ENDIF
+ IF(CKIN(NOFF+2*ILM).GT.CKIN(NOFF+2*ILM-1)) PMU(I)=
+ & MIN(PMU(I),CKIN(NOFF+2*ILM))
+ IF(I.EQ.MLM) PMU(I)=MIN(PMU(I),0.5D0*PMMX)
+ IF(MEQL.EQ.0) PMH(I)=MIN(PMU(I),0.5D0*PMMX)
+ IF(PMU(I).LT.PML(I)+PARJ(64)) MBW(I)=-1
+ IF(MBW(I).EQ.1) THEN
+ ATL(I)=ATAN((PML(I)**2-PMD(I)**2)/(PMD(I)*PGD(I)))
+ ATU(I)=ATAN((PMU(I)**2-PMD(I)**2)/(PMD(I)*PGD(I)))
+ IF(MEQL.EQ.0) ATH(I)=ATAN((PMH(I)**2-PMD(I)**2)/(PMD(I)*
+ & PGD(I)))
+ ENDIF
+ ELSEIF(MBW(I).EQ.1.AND.MOFSH.EQ.5) THEN
+ ILM=I
+ IF(MLM.EQ.2) ILM=3-I
+ PML(I)=MAX(CKIN(48+I),PARP(42))
+ PMU(I)=PMMX-MAX(CKIN(51-I),PARP(42))
+ IF(MBW(3-I).EQ.0) PMU(I)=MIN(PMU(I),PMMX-PMD(3-I))
+ IF(I.EQ.MLM) PMU(I)=MIN(PMU(I),0.5D0*PMMX)
+ IF(MEQL.EQ.0) PMH(I)=MIN(PMU(I),0.5D0*PMMX)
+ IF(PMU(I).LT.PML(I)+PARJ(64)) MBW(I)=-1
+ IF(MBW(I).EQ.1) THEN
+ ATL(I)=ATAN((PML(I)**2-PMD(I)**2)/(PMD(I)*PGD(I)))
+ ATU(I)=ATAN((PMU(I)**2-PMD(I)**2)/(PMD(I)*PGD(I)))
+ IF(MEQL.EQ.0) ATH(I)=ATAN((PMH(I)**2-PMD(I)**2)/(PMD(I)*
+ & PGD(I)))
+ ENDIF
+ ENDIF
+ 120 CONTINUE
+ IF(MBW(1).LT.0.OR.MBW(2).LT.0.OR.(MBW(1).EQ.0.AND.MBW(2).EQ.0))
+ &THEN
+ CALL PYERRM(3,'(PYOFSH:) no allowed decay product masses')
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Calculation of partial width of resonance.
+ IF(MOFSH.EQ.1) THEN
+
+C..If only one integration, pick that to be the inner.
+ IF(MBW(1).EQ.0) THEN
+ PM2=PMD(1)
+ PMD(1)=PMD(2)
+ PGD(1)=PGD(2)
+ PML(1)=PML(2)
+ PMU(1)=PMU(2)
+ ELSEIF(MBW(2).EQ.0) THEN
+ PM2=PMD(2)
+ ENDIF
+
+C...Start outer loop of integration.
+ IF(MBW(1).EQ.1.AND.MBW(2).EQ.1) THEN
+ ATL2=ATAN((PML(2)**2-PMD(2)**2)/(PMD(2)*PGD(2)))
+ ATU2=ATAN((PMU(2)**2-PMD(2)**2)/(PMD(2)*PGD(2)))
+ NPT2=1
+ XPT2(1)=1D0
+ INX2(1)=0
+ FMAX2=0D0
+ ENDIF
+ 130 IF(MBW(1).EQ.1.AND.MBW(2).EQ.1) THEN
+ PM2S=PMD(2)**2+PMD(2)*PGD(2)*TAN(ATL2+XPT2(NPT2)*(ATU2-ATL2))
+ PM2=MIN(PMU(2),MAX(PML(2),SQRT(MAX(0D0,PM2S))))
+ ENDIF
+ RM2=(PM2/PMMX)**2
+
+C...Start inner loop of integration.
+ PML1=PML(1)
+ PMU1=MIN(PMU(1),PMMX-PM2)
+ IF(MEQL.EQ.1) PMU1=MIN(PMU1,PM2)
+ ATL1=ATAN((PML1**2-PMD(1)**2)/(PMD(1)*PGD(1)))
+ ATU1=ATAN((PMU1**2-PMD(1)**2)/(PMD(1)*PGD(1)))
+ IF(PML1+PARJ(64).GE.PMU1.OR.ATL1+1D-7.GE.ATU1) THEN
+ FUNC2=0D0
+ GOTO 180
+ ENDIF
+ NPT1=1
+ XPT1(1)=1D0
+ INX1(1)=0
+ FMAX1=0D0
+ 140 PM1S=PMD(1)**2+PMD(1)*PGD(1)*TAN(ATL1+XPT1(NPT1)*(ATU1-ATL1))
+ PM1=MIN(PMU1,MAX(PML1,SQRT(MAX(0D0,PM1S))))
+ RM1=(PM1/PMMX)**2
+
+C...Evaluate function value - inner loop.
+ FUNC1=SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ IF(MMED.EQ.1) FUNC1=FUNC1*((1D0-RM1-RM2)**2+8D0*RM1*RM2)
+ IF(MMED.EQ.2) FUNC1=FUNC1**3*(1D0+10D0*RM1+10D0*RM2+RM1**2+
+ & RM2**2+10D0*RM1*RM2)
+ IF(FUNC1.GT.FMAX1) FMAX1=FUNC1
+ FPT1(NPT1)=FUNC1
+
+C...Go to next position in inner loop.
+ IF(NPT1.EQ.1) THEN
+ NPT1=NPT1+1
+ XPT1(NPT1)=0D0
+ INX1(NPT1)=1
+ GOTO 140
+ ELSEIF(NPT1.LE.8) THEN
+ NPT1=NPT1+1
+ IF(NPT1.LE.4.OR.NPT1.EQ.6) ISH1=1
+ ISH1=ISH1+1
+ XPT1(NPT1)=0.5D0*(XPT1(ISH1)+XPT1(INX1(ISH1)))
+ INX1(NPT1)=INX1(ISH1)
+ INX1(ISH1)=NPT1
+ GOTO 140
+ ELSEIF(NPT1.LT.100) THEN
+ ISN1=ISH1
+ 150 ISH1=ISH1+1
+ IF(ISH1.GT.NPT1) ISH1=2
+ IF(ISH1.EQ.ISN1) GOTO 160
+ DFPT1=ABS(FPT1(ISH1)-FPT1(INX1(ISH1)))
+ IF(DFPT1.LT.PARP(43)*FMAX1) GOTO 150
+ NPT1=NPT1+1
+ XPT1(NPT1)=0.5D0*(XPT1(ISH1)+XPT1(INX1(ISH1)))
+ INX1(NPT1)=INX1(ISH1)
+ INX1(ISH1)=NPT1
+ GOTO 140
+ ENDIF
+
+C...Calculate integral over inner loop.
+ 160 FSUM1=0D0
+ DO 170 IPT1=2,NPT1
+ FSUM1=FSUM1+0.5D0*(FPT1(IPT1)+FPT1(INX1(IPT1)))*
+ & (XPT1(INX1(IPT1))-XPT1(IPT1))
+ 170 CONTINUE
+ FUNC2=FSUM1*(ATU1-ATL1)/PARU(1)
+ 180 IF(MBW(1).EQ.1.AND.MBW(2).EQ.1) THEN
+ IF(FUNC2.GT.FMAX2) FMAX2=FUNC2
+ FPT2(NPT2)=FUNC2
+
+C...Go to next position in outer loop.
+ IF(NPT2.EQ.1) THEN
+ NPT2=NPT2+1
+ XPT2(NPT2)=0D0
+ INX2(NPT2)=1
+ GOTO 130
+ ELSEIF(NPT2.LE.8) THEN
+ NPT2=NPT2+1
+ IF(NPT2.LE.4.OR.NPT2.EQ.6) ISH2=1
+ ISH2=ISH2+1
+ XPT2(NPT2)=0.5D0*(XPT2(ISH2)+XPT2(INX2(ISH2)))
+ INX2(NPT2)=INX2(ISH2)
+ INX2(ISH2)=NPT2
+ GOTO 130
+ ELSEIF(NPT2.LT.100) THEN
+ ISN2=ISH2
+ 190 ISH2=ISH2+1
+ IF(ISH2.GT.NPT2) ISH2=2
+ IF(ISH2.EQ.ISN2) GOTO 200
+ DFPT2=ABS(FPT2(ISH2)-FPT2(INX2(ISH2)))
+ IF(DFPT2.LT.PARP(43)*FMAX2) GOTO 190
+ NPT2=NPT2+1
+ XPT2(NPT2)=0.5D0*(XPT2(ISH2)+XPT2(INX2(ISH2)))
+ INX2(NPT2)=INX2(ISH2)
+ INX2(ISH2)=NPT2
+ GOTO 130
+ ENDIF
+
+C...Calculate integral over outer loop.
+ 200 FSUM2=0D0
+ DO 210 IPT2=2,NPT2
+ FSUM2=FSUM2+0.5D0*(FPT2(IPT2)+FPT2(INX2(IPT2)))*
+ & (XPT2(INX2(IPT2))-XPT2(IPT2))
+ 210 CONTINUE
+ FSUM2=FSUM2*(ATU2-ATL2)/PARU(1)
+ IF(MEQL.EQ.1) FSUM2=2D0*FSUM2
+ ELSE
+ FSUM2=FUNC2
+ ENDIF
+
+C...Save result; second integration for user-selected mass range.
+ IF(LOOP.EQ.1) WIDW=FSUM2
+ WID2=FSUM2
+ IF(LOOP.EQ.1.AND.(CKIN(46).GE.CKIN(45).OR.CKIN(48).GE.CKIN(47)
+ & .OR.MAX(CKIN(45),CKIN(47)).GE.1.01D0*PARP(42))) THEN
+ LOOP=2
+ GOTO 100
+ ENDIF
+ RET1=WIDW
+ RET2=WID2/WIDW
+
+C...Select two decay product masses of a resonance.
+ ELSEIF(MOFSH.EQ.2.OR.MOFSH.EQ.5) THEN
+ 220 DO 230 I=1,2
+ IF(MBW(I).EQ.0) GOTO 230
+ PMBW=PMD(I)**2+PMD(I)*PGD(I)*TAN(ATL(I)+PYR(0)*
+ & (ATU(I)-ATL(I)))
+ PMG(I)=MIN(PMU(I),MAX(PML(I),SQRT(MAX(0D0,PMBW))))
+ RMG(I)=(PMG(I)/PMMX)**2
+ 230 CONTINUE
+ IF((MEQL.EQ.1.AND.PMG(MAX(1,MLM)).GT.PMG(MIN(2,3-MLM))).OR.
+ & PMG(1)+PMG(2)+PARJ(64).GT.PMMX) GOTO 220
+
+C...Weight with matrix element (if none known, use beta factor).
+ FLAM=SQRT(MAX(0D0,(1D0-RMG(1)-RMG(2))**2-4D0*RMG(1)*RMG(2)))
+ IF(MMED.EQ.1) THEN
+ WTBE=FLAM*((1D0-RMG(1)-RMG(2))**2+8D0*RMG(1)*RMG(2))
+ ELSEIF(MMED.EQ.2) THEN
+ WTBE=FLAM**3*(1D0+10D0*RMG(1)+10D0*RMG(2)+RMG(1)**2+
+ & RMG(2)**2+10D0*RMG(1)*RMG(2))
+ ELSEIF(MMED.EQ.3) THEN
+ WTBE=FLAM*(RMG(1)+FLAM**2/12D0)
+ ELSE
+ WTBE=FLAM
+ ENDIF
+ IF(WTBE.LT.PYR(0)) GOTO 220
+ RET1=PMG(1)
+ RET2=PMG(2)
+
+C...Find suitable set of masses for initialization of 2 -> 2 processes.
+ ELSEIF(MOFSH.EQ.3) THEN
+ IF(MBW(1).NE.0.AND.MBW(2).EQ.0) THEN
+ PMG(1)=MIN(PMD(1),0.5D0*(PML(1)+PMU(1)))
+ PMG(2)=PMD(2)
+ ELSEIF(MBW(2).NE.0.AND.MBW(1).EQ.0) THEN
+ PMG(1)=PMD(1)
+ PMG(2)=MIN(PMD(2),0.5D0*(PML(2)+PMU(2)))
+ ELSE
+ IDIV=-1
+ 240 IDIV=IDIV+1
+ PMG(1)=MIN(PMD(1),0.1D0*(IDIV*PML(1)+(10-IDIV)*PMU(1)))
+ PMG(2)=MIN(PMD(2),0.1D0*(IDIV*PML(2)+(10-IDIV)*PMU(2)))
+ IF(IDIV.LE.9.AND.PMG(1)+PMG(2).GT.0.9D0*PMMX) GOTO 240
+ ENDIF
+ RET1=PMG(1)
+ RET2=PMG(2)
+
+C...Evaluate importance of excluded tails of Breit-Wigners.
+ IF(MEQL.EQ.0.AND.MBW(1).EQ.1.AND.MBW(2).EQ.1.AND.PMD(1)+PMD(2)
+ & .GT.PMMX.AND.PMH(1).GT.PML(1).AND.PMH(2).GT.PML(2)) MEQL=2
+ IF(MEQL.LE.1) THEN
+ VINT(80)=1D0
+ DO 250 I=1,2
+ IF(MBW(I).NE.0) VINT(80)=VINT(80)*1.25D0*(ATU(I)-ATL(I))/
+ & PARU(1)
+ 250 CONTINUE
+ ELSE
+ VINT(80)=(1.25D0/PARU(1))**2*MAX((ATU(1)-ATL(1))*
+ & (ATH(2)-ATL(2)),(ATH(1)-ATL(1))*(ATU(2)-ATL(2)))
+ ENDIF
+ IF((ISUB.EQ.15.OR.ISUB.EQ.19.OR.ISUB.EQ.30.OR.ISUB.EQ.35).AND.
+ & MSTP(43).NE.2) VINT(80)=2D0*VINT(80)
+ IF(ISUB.EQ.22.AND.MSTP(43).NE.2) VINT(80)=4D0*VINT(80)
+ IF(MEQL.GE.1) VINT(80)=2D0*VINT(80)
+
+C...Pick one particle to be the lighter (if improves efficiency).
+ ELSEIF(MOFSH.EQ.4) THEN
+ IF(MEQL.EQ.0.AND.MBW(1).EQ.1.AND.MBW(2).EQ.1.AND.PMD(1)+PMD(2)
+ & .GT.PMMX.AND.PMH(1).GT.PML(1).AND.PMH(2).GT.PML(2)) MEQL=2
+ 260 IF(MEQL.EQ.2) MLM=INT(1.5D0+PYR(0))
+
+C...Select two masses according to Breit-Wigner + flat in s + 1/s.
+ DO 270 I=1,2
+ IF(MBW(I).EQ.0) GOTO 270
+ PMV=PMU(I)
+ IF(MEQL.EQ.2.AND.I.EQ.MLM) PMV=PMH(I)
+ ATV=ATU(I)
+ IF(MEQL.EQ.2.AND.I.EQ.MLM) ATV=ATH(I)
+ RBR=PYR(0)
+ IF((ISUB.EQ.15.OR.ISUB.EQ.19.OR.ISUB.EQ.22.OR.ISUB.EQ.30.OR.
+ & ISUB.EQ.35).AND.MSTP(43).NE.2) RBR=2D0*RBR
+ IF(RBR.LT.0.8D0) THEN
+ PMSR=PMD(I)**2+PMD(I)*PGD(I)*TAN(ATL(I)+PYR(0)*(ATV-ATL(I)))
+ PMG(I)=MIN(PMV,MAX(PML(I),SQRT(MAX(0D0,PMSR))))
+ ELSEIF(RBR.LT.0.9D0) THEN
+ PMG(I)=SQRT(MAX(0D0,PML(I)**2+PYR(0)*(PMV**2-PML(I)**2)))
+ ELSEIF(RBR.LT.1.5D0) THEN
+ PMG(I)=PML(I)*(PMV/PML(I))**PYR(0)
+ ELSE
+ PMG(I)=SQRT(MAX(0D0,PML(I)**2*PMV**2/(PML(I)**2+PYR(0)*
+ & (PMV**2-PML(I)**2))))
+ ENDIF
+ 270 CONTINUE
+ IF((MEQL.GE.1.AND.PMG(MAX(1,MLM)).GT.PMG(MIN(2,3-MLM))).OR.
+ & PMG(1)+PMG(2)+PARJ(64).GT.PMMX) THEN
+ IF(MINT(48).EQ.1.AND.MSTP(171).EQ.0) THEN
+ NGEN(0,1)=NGEN(0,1)+1
+ NGEN(MINT(1),1)=NGEN(MINT(1),1)+1
+ GOTO 260
+ ELSE
+ MINT(51)=1
+ RETURN
+ ENDIF
+ ENDIF
+ RET1=PMG(1)
+ RET2=PMG(2)
+
+C...Give weight for selected mass distribution.
+ VINT(80)=1D0
+ DO 280 I=1,2
+ IF(MBW(I).EQ.0) GOTO 280
+ PMV=PMU(I)
+ IF(MEQL.EQ.2.AND.I.EQ.MLM) PMV=PMH(I)
+ ATV=ATU(I)
+ IF(MEQL.EQ.2.AND.I.EQ.MLM) ATV=ATH(I)
+ F0=PMD(I)*PGD(I)/((PMG(I)**2-PMD(I)**2)**2+
+ & (PMD(I)*PGD(I))**2)/PARU(1)
+ F1=1D0
+ F2=1D0/PMG(I)**2
+ F3=1D0/PMG(I)**4
+ FI0=(ATV-ATL(I))/PARU(1)
+ FI1=PMV**2-PML(I)**2
+ FI2=2D0*LOG(PMV/PML(I))
+ FI3=1D0/PML(I)**2-1D0/PMV**2
+ IF((ISUB.EQ.15.OR.ISUB.EQ.19.OR.ISUB.EQ.22.OR.ISUB.EQ.30.OR.
+ & ISUB.EQ.35).AND.MSTP(43).NE.2) THEN
+ VINT(80)=VINT(80)*20D0/(8D0+(FI0/F0)*(F1/FI1+6D0*F2/FI2+
+ & 5D0*F3/FI3))
+ ELSE
+ VINT(80)=VINT(80)*10D0/(8D0+(FI0/F0)*(F1/FI1+F2/FI2))
+ ENDIF
+ VINT(80)=VINT(80)*FI0
+ 280 CONTINUE
+ IF(MEQL.GE.1) VINT(80)=2D0*VINT(80)
+ ENDIF
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYRECO
+C...Handles the possibility of colour reconnection in W+W- events,
+C...Based on the main scenarios of the Sjostrand and Khoze study:
+C...I, II, II', intermediate and instantaneous; plus one model
+C...along the lines of the Gustafson and Hakkinen: GH.
+C...Note: also handles Z0 Z0 and W-W+ events, but notation below
+C...is as if first resonance is W+ and second W-.
+
+ SUBROUTINE PYRECO(IW1,IW2,NSD1,NAFT1)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter value; number of points in MC integration.
+ PARAMETER (NPT=100)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION NBEG(2),NEND(2),INP(50),INM(50),BEWW(3),XP(3),XM(3),
+ &V1(3),V2(3),BETP(50,4),DIRP(50,3),BETM(50,4),DIRM(50,3),
+ &XD(4),XB(4),IAP(NPT),IAM(NPT),WTA(NPT),V1P(3),V2P(3),V1M(3),
+ &V2M(3),Q(4,3),XPP(3),XMM(3),IPC(20),IMC(20),TC(0:20),TPC(20),
+ &TMC(20),IJOIN(100)
+
+C...Functions to give four-product and to do determinants.
+ FOUR(I,J)=P(I,4)*P(J,4)-P(I,1)*P(J,1)-P(I,2)*P(J,2)-P(I,3)*P(J,3)
+ DETER(I,J,L)=Q(I,1)*Q(J,2)*Q(L,3)-Q(I,1)*Q(L,2)*Q(J,3)+
+ &Q(J,1)*Q(L,2)*Q(I,3)-Q(J,1)*Q(I,2)*Q(L,3)+
+ &Q(L,1)*Q(I,2)*Q(J,3)-Q(L,1)*Q(J,2)*Q(I,3)
+
+C...Only allow fraction of recoupling for GH, intermediate and
+C...instantaneous.
+ IF(MSTP(115).EQ.5.OR.MSTP(115).EQ.11.OR.MSTP(115).EQ.12) THEN
+ IF(PYR(0).GT.PARP(120)) RETURN
+ ENDIF
+ ISUB=MINT(1)
+
+C...Common part for scenarios I, II, II', and GH.
+ IF(MSTP(115).EQ.1.OR.MSTP(115).EQ.2.OR.MSTP(115).EQ.3.OR.
+ &MSTP(115).EQ.5) THEN
+
+C...Read out frequently-used parameters.
+ PI=PARU(1)
+ HBAR=PARU(3)
+ PMW=PMAS(24,1)
+ IF(ISUB.EQ.22) PMW=PMAS(23,1)
+ PGW=PMAS(24,2)
+ IF(ISUB.EQ.22) PGW=PMAS(23,2)
+ TFRAG=PARP(115)
+ RHAD=PARP(116)
+ FACT=PARP(117)
+ BLOWR=PARP(118)
+ BLOWT=PARP(119)
+
+C...Find range of decay products of the W's.
+C...Background: the W's are stored in IW1 and IW2.
+C...Their direct decay products in NSD1+1 through NSD1+4.
+C...Products after shower (if any) in NSD1+5 through NAFT1
+C...for first W and in NAFT1+1 through N for the second.
+ IF(NAFT1.GT.NSD1+4) THEN
+ NBEG(1)=NSD1+5
+ NEND(1)=NAFT1
+ ELSE
+ NBEG(1)=NSD1+1
+ NEND(1)=NSD1+2
+ ENDIF
+ IF(N.GT.NAFT1) THEN
+ NBEG(2)=NAFT1+1
+ NEND(2)=N
+ ELSE
+ NBEG(2)=NSD1+3
+ NEND(2)=NSD1+4
+ ENDIF
+
+C...Rearrange parton shower products along strings.
+ NOLD=N
+ CALL PYPREP(NSD1+1)
+ IF(MINT(51).NE.0) RETURN
+
+C...Find partons pointing back to W+ and W-; store them with quark
+C...end of string first.
+ NNP=0
+ NNM=0
+ ISGP=0
+ ISGM=0
+ DO 120 I=NOLD+1,N
+ IF(K(I,1).NE.1.AND.K(I,1).NE.2) GOTO 120
+ IF(IABS(K(I,2)).GE.22) GOTO 120
+ IF(K(I,3).GE.NBEG(1).AND.K(I,3).LE.NEND(1)) THEN
+ IF(ISGP.EQ.0) ISGP=ISIGN(1,K(I,2))
+ NNP=NNP+1
+ IF(ISGP.EQ.1) THEN
+ INP(NNP)=I
+ ELSE
+ DO 100 I1=NNP,2,-1
+ INP(I1)=INP(I1-1)
+ 100 CONTINUE
+ INP(1)=I
+ ENDIF
+ IF(K(I,1).EQ.1) ISGP=0
+ ELSEIF(K(I,3).GE.NBEG(2).AND.K(I,3).LE.NEND(2)) THEN
+ IF(ISGM.EQ.0) ISGM=ISIGN(1,K(I,2))
+ NNM=NNM+1
+ IF(ISGM.EQ.1) THEN
+ INM(NNM)=I
+ ELSE
+ DO 110 I1=NNM,2,-1
+ INM(I1)=INM(I1-1)
+ 110 CONTINUE
+ INM(1)=I
+ ENDIF
+ IF(K(I,1).EQ.1) ISGM=0
+ ENDIF
+ 120 CONTINUE
+
+C...Boost to W+W- rest frame (not strictly needed).
+ DO 130 J=1,3
+ BEWW(J)=(P(IW1,J)+P(IW2,J))/(P(IW1,4)+P(IW2,4))
+ 130 CONTINUE
+ CALL PYROBO(IW1,IW1,0D0,0D0,-BEWW(1),-BEWW(2),-BEWW(3))
+ CALL PYROBO(IW2,IW2,0D0,0D0,-BEWW(1),-BEWW(2),-BEWW(3))
+ CALL PYROBO(NOLD+1,N,0D0,0D0,-BEWW(1),-BEWW(2),-BEWW(3))
+
+C...Select decay vertices of W+ and W-.
+ TP=HBAR*(-LOG(PYR(0)))*P(IW1,4)/
+ & SQRT((P(IW1,5)**2-PMW**2)**2+(P(IW1,5)**2*PGW/PMW)**2)
+ TM=HBAR*(-LOG(PYR(0)))*P(IW2,4)/
+ & SQRT((P(IW2,5)**2-PMW**2)**2+(P(IW2,5)**2*PGW/PMW)**2)
+ GTMAX=MAX(TP,TM)
+ DO 140 J=1,3
+ XP(J)=TP*P(IW1,J)/P(IW1,4)
+ XM(J)=TM*P(IW2,J)/P(IW2,4)
+ 140 CONTINUE
+
+C...Begin scenario I specifics.
+ IF(MSTP(115).EQ.1) THEN
+
+C...Reconstruct velocity and direction of W+ string pieces.
+ DO 170 IIP=1,NNP-1
+ IF(K(INP(IIP),2).LT.0) GOTO 170
+ I1=INP(IIP)
+ I2=INP(IIP+1)
+ P1A=SQRT(P(I1,1)**2+P(I1,2)**2+P(I1,3)**2)
+ P2A=SQRT(P(I2,1)**2+P(I2,2)**2+P(I2,3)**2)
+ DO 150 J=1,3
+ V1(J)=P(I1,J)/P1A
+ V2(J)=P(I2,J)/P2A
+ BETP(IIP,J)=0.5D0*(V1(J)+V2(J))
+ DIRP(IIP,J)=V1(J)-V2(J)
+ 150 CONTINUE
+ BETP(IIP,4)=1D0/SQRT(1D0-BETP(IIP,1)**2-BETP(IIP,2)**2-
+ & BETP(IIP,3)**2)
+ DIRL=SQRT(DIRP(IIP,1)**2+DIRP(IIP,2)**2+DIRP(IIP,3)**2)
+ DO 160 J=1,3
+ DIRP(IIP,J)=DIRP(IIP,J)/DIRL
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...Reconstruct velocity and direction of W- string pieces.
+ DO 200 IIM=1,NNM-1
+ IF(K(INM(IIM),2).LT.0) GOTO 200
+ I1=INM(IIM)
+ I2=INM(IIM+1)
+ P1A=SQRT(P(I1,1)**2+P(I1,2)**2+P(I1,3)**2)
+ P2A=SQRT(P(I2,1)**2+P(I2,2)**2+P(I2,3)**2)
+ DO 180 J=1,3
+ V1(J)=P(I1,J)/P1A
+ V2(J)=P(I2,J)/P2A
+ BETM(IIM,J)=0.5D0*(V1(J)+V2(J))
+ DIRM(IIM,J)=V1(J)-V2(J)
+ 180 CONTINUE
+ BETM(IIM,4)=1D0/SQRT(1D0-BETM(IIM,1)**2-BETM(IIM,2)**2-
+ & BETM(IIM,3)**2)
+ DIRL=SQRT(DIRM(IIM,1)**2+DIRM(IIM,2)**2+DIRM(IIM,3)**2)
+ DO 190 J=1,3
+ DIRM(IIM,J)=DIRM(IIM,J)/DIRL
+ 190 CONTINUE
+ 200 CONTINUE
+
+C...Loop over number of space-time points.
+ NACC=0
+ SUM=0D0
+ DO 250 IPT=1,NPT
+
+C...Pick x,y,z,t Gaussian (width RHAD and TFRAG, respectively).
+ R=SQRT(-LOG(PYR(0)))
+ PHI=2D0*PI*PYR(0)
+ X=BLOWR*RHAD*R*COS(PHI)
+ Y=BLOWR*RHAD*R*SIN(PHI)
+ R=SQRT(-LOG(PYR(0)))
+ PHI=2D0*PI*PYR(0)
+ Z=BLOWR*RHAD*R*COS(PHI)
+ T=GTMAX+BLOWT*SQRT(0.5D0)*TFRAG*R*ABS(SIN(PHI))
+
+C...Reject impossible points. Weight for sample distribution.
+ IF(T**2-X**2-Y**2-Z**2.LT.0D0) GOTO 250
+ WTSMP=EXP(-(X**2+Y**2+Z**2)/(BLOWR*RHAD)**2)*
+ & EXP(-2D0*(T-GTMAX)**2/(BLOWT*TFRAG)**2)
+
+C...Loop over W+ string pieces and find one with largest weight.
+ IMAXP=0
+ WTMAXP=1D-10
+ XD(1)=X-XP(1)
+ XD(2)=Y-XP(2)
+ XD(3)=Z-XP(3)
+ XD(4)=T-TP
+ DO 220 IIP=1,NNP-1
+ IF(K(INP(IIP),2).LT.0) GOTO 220
+ BED=BETP(IIP,1)*XD(1)+BETP(IIP,2)*XD(2)+BETP(IIP,3)*XD(3)
+ BEDG=BETP(IIP,4)*(BETP(IIP,4)*BED/(1D0+BETP(IIP,4))-XD(4))
+ DO 210 J=1,3
+ XB(J)=XD(J)+BEDG*BETP(IIP,J)
+ 210 CONTINUE
+ XB(4)=BETP(IIP,4)*(XD(4)-BED)
+ SR2=XB(1)**2+XB(2)**2+XB(3)**2
+ SZ2=(DIRP(IIP,1)*XB(1)+DIRP(IIP,2)*XB(2)+
+ & DIRP(IIP,3)*XB(3))**2
+ WTP=EXP(-(SR2-SZ2)/(2D0*RHAD**2))*EXP(-(XB(4)**2-SZ2)/
+ & TFRAG**2)
+ IF(XB(4)-SQRT(SR2).LT.0D0) WTP=0D0
+ IF(WTP.GT.WTMAXP) THEN
+ IMAXP=IIP
+ WTMAXP=WTP
+ ENDIF
+ 220 CONTINUE
+
+C...Loop over W- string pieces and find one with largest weight.
+ IMAXM=0
+ WTMAXM=1D-10
+ XD(1)=X-XM(1)
+ XD(2)=Y-XM(2)
+ XD(3)=Z-XM(3)
+ XD(4)=T-TM
+ DO 240 IIM=1,NNM-1
+ IF(K(INM(IIM),2).LT.0) GOTO 240
+ BED=BETM(IIM,1)*XD(1)+BETM(IIM,2)*XD(2)+BETM(IIM,3)*XD(3)
+ BEDG=BETM(IIM,4)*(BETM(IIM,4)*BED/(1D0+BETM(IIM,4))-XD(4))
+ DO 230 J=1,3
+ XB(J)=XD(J)+BEDG*BETM(IIM,J)
+ 230 CONTINUE
+ XB(4)=BETM(IIM,4)*(XD(4)-BED)
+ SR2=XB(1)**2+XB(2)**2+XB(3)**2
+ SZ2=(DIRM(IIM,1)*XB(1)+DIRM(IIM,2)*XB(2)+
+ & DIRM(IIM,3)*XB(3))**2
+ WTM=EXP(-(SR2-SZ2)/(2D0*RHAD**2))*EXP(-(XB(4)**2-SZ2)/
+ & TFRAG**2)
+ IF(XB(4)-SQRT(SR2).LT.0D0) WTM=0D0
+ IF(WTM.GT.WTMAXM) THEN
+ IMAXM=IIM
+ WTMAXM=WTM
+ ENDIF
+ 240 CONTINUE
+
+C...Result of integration.
+ WT=0D0
+ IF(IMAXP.NE.0.AND.IMAXM.NE.0) THEN
+ WT=WTMAXP*WTMAXM/WTSMP
+ SUM=SUM+WT
+ NACC=NACC+1
+ IAP(NACC)=IMAXP
+ IAM(NACC)=IMAXM
+ WTA(NACC)=WT
+ ENDIF
+ 250 CONTINUE
+ RES=BLOWR**3*BLOWT*SUM/NPT
+
+C...Decide whether to reconnect and, if so, where.
+ IACC=0
+ PREC=1D0-EXP(-FACT*RES)
+ IF(PREC.GT.PYR(0)) THEN
+ RSUM=PYR(0)*SUM
+ DO 260 IA=1,NACC
+ IACC=IA
+ RSUM=RSUM-WTA(IA)
+ IF(RSUM.LE.0D0) GOTO 270
+ 260 CONTINUE
+ 270 IIP=IAP(IACC)
+ IIM=IAM(IACC)
+ ENDIF
+
+C...Begin scenario II and II' specifics.
+ ELSEIF(MSTP(115).EQ.2.OR.MSTP(115).EQ.3) THEN
+
+C...Loop through all string pieces, one from W+ and one from W-.
+ NCROSS=0
+ TC(0)=0D0
+ DO 340 IIP=1,NNP-1
+ IF(K(INP(IIP),2).LT.0) GOTO 340
+ I1P=INP(IIP)
+ I2P=INP(IIP+1)
+ DO 330 IIM=1,NNM-1
+ IF(K(INM(IIM),2).LT.0) GOTO 330
+ I1M=INM(IIM)
+ I2M=INM(IIM+1)
+
+C...Find endpoint velocity vectors.
+ DO 280 J=1,3
+ V1P(J)=P(I1P,J)/P(I1P,4)
+ V2P(J)=P(I2P,J)/P(I2P,4)
+ V1M(J)=P(I1M,J)/P(I1M,4)
+ V2M(J)=P(I2M,J)/P(I2M,4)
+ 280 CONTINUE
+
+C...Define q matrix and find t.
+ DO 290 J=1,3
+ Q(1,J)=V2P(J)-V1P(J)
+ Q(2,J)=-(V2M(J)-V1M(J))
+ Q(3,J)=XP(J)-XM(J)-TP*V1P(J)+TM*V1M(J)
+ Q(4,J)=V1P(J)-V1M(J)
+ 290 CONTINUE
+ T=-DETER(1,2,3)/DETER(1,2,4)
+
+C...Find alpha and beta; i.e. coordinates of crossing point.
+ S11=Q(1,1)*(T-TP)
+ S12=Q(2,1)*(T-TM)
+ S13=Q(3,1)+Q(4,1)*T
+ S21=Q(1,2)*(T-TP)
+ S22=Q(2,2)*(T-TM)
+ S23=Q(3,2)+Q(4,2)*T
+ DEN=S11*S22-S12*S21
+ ALP=(S12*S23-S22*S13)/DEN
+ BET=(S21*S13-S11*S23)/DEN
+
+C...Check if solution acceptable.
+ IANSW=1
+ IF(T.LT.GTMAX) IANSW=0
+ IF(ALP.LT.0D0.OR.ALP.GT.1D0) IANSW=0
+ IF(BET.LT.0D0.OR.BET.GT.1D0) IANSW=0
+
+C...Find point of crossing and check that not inconsistent.
+ DO 300 J=1,3
+ XPP(J)=XP(J)+(V1P(J)+ALP*(V2P(J)-V1P(J)))*(T-TP)
+ XMM(J)=XM(J)+(V1M(J)+BET*(V2M(J)-V1M(J)))*(T-TM)
+ 300 CONTINUE
+ D2PM=(XPP(1)-XMM(1))**2+(XPP(2)-XMM(2))**2+
+ & (XPP(3)-XMM(3))**2
+ D2P=XPP(1)**2+XPP(2)**2+XPP(3)**2
+ D2M=XMM(1)**2+XMM(2)**2+XMM(3)**2
+ IF(D2PM.GT.1D-4*(D2P+D2M)) IANSW=-1
+
+C...Find string eigentimes at crossing.
+ IF(IANSW.EQ.1) THEN
+ TAUP=SQRT(MAX(0D0,(T-TP)**2-(XPP(1)-XP(1))**2-
+ & (XPP(2)-XP(2))**2-(XPP(3)-XP(3))**2))
+ TAUM=SQRT(MAX(0D0,(T-TM)**2-(XMM(1)-XM(1))**2-
+ & (XMM(2)-XM(2))**2-(XMM(3)-XM(3))**2))
+ ELSE
+ TAUP=0D0
+ TAUM=0D0
+ ENDIF
+
+C...Order crossings by time. End loop over crossings.
+ IF(IANSW.EQ.1.AND.NCROSS.LT.20) THEN
+ NCROSS=NCROSS+1
+ DO 310 I1=NCROSS,1,-1
+ IF(T.GT.TC(I1-1).OR.I1.EQ.1) THEN
+ IPC(I1)=IIP
+ IMC(I1)=IIM
+ TC(I1)=T
+ TPC(I1)=TAUP
+ TMC(I1)=TAUM
+ GOTO 320
+ ELSE
+ IPC(I1)=IPC(I1-1)
+ IMC(I1)=IMC(I1-1)
+ TC(I1)=TC(I1-1)
+ TPC(I1)=TPC(I1-1)
+ TMC(I1)=TMC(I1-1)
+ ENDIF
+ 310 CONTINUE
+ 320 CONTINUE
+ ENDIF
+ 330 CONTINUE
+ 340 CONTINUE
+
+C...Loop over crossings; find first (if any) acceptable one.
+ IACC=0
+ IF(NCROSS.GE.1) THEN
+ DO 350 IC=1,NCROSS
+ PNFRAG=EXP(-(TPC(IC)**2+TMC(IC)**2)/TFRAG**2)
+ IF(PNFRAG.GT.PYR(0)) THEN
+C...Scenario II: only compare with fragmentation time.
+ IF(MSTP(115).EQ.2) THEN
+ IACC=IC
+ IIP=IPC(IACC)
+ IIM=IMC(IACC)
+ GOTO 360
+C...Scenario II': also require that string length decreases.
+ ELSE
+ IIP=IPC(IC)
+ IIM=IMC(IC)
+ I1P=INP(IIP)
+ I2P=INP(IIP+1)
+ I1M=INM(IIM)
+ I2M=INM(IIM+1)
+ ELOLD=FOUR(I1P,I2P)*FOUR(I1M,I2M)
+ ELNEW=FOUR(I1P,I2M)*FOUR(I1M,I2P)
+ IF(ELNEW.LT.ELOLD) THEN
+ IACC=IC
+ IIP=IPC(IACC)
+ IIM=IMC(IACC)
+ GOTO 360
+ ENDIF
+ ENDIF
+ ENDIF
+ 350 CONTINUE
+ 360 CONTINUE
+ ENDIF
+
+C...Begin scenario GH specifics.
+ ELSEIF(MSTP(115).EQ.5) THEN
+
+C...Loop through all string pieces, one from W+ and one from W-.
+ IACC=0
+ ELMIN=1D0
+ DO 380 IIP=1,NNP-1
+ IF(K(INP(IIP),2).LT.0) GOTO 380
+ I1P=INP(IIP)
+ I2P=INP(IIP+1)
+ DO 370 IIM=1,NNM-1
+ IF(K(INM(IIM),2).LT.0) GOTO 370
+ I1M=INM(IIM)
+ I2M=INM(IIM+1)
+
+C...Look for largest decrease of (exponent of) Lambda measure.
+ ELOLD=FOUR(I1P,I2P)*FOUR(I1M,I2M)
+ ELNEW=FOUR(I1P,I2M)*FOUR(I1M,I2P)
+ ELDIF=ELNEW/MAX(1D-10,ELOLD)
+ IF(ELDIF.LT.ELMIN) THEN
+ IACC=IIP+IIM
+ ELMIN=ELDIF
+ IPC(1)=IIP
+ IMC(1)=IIM
+ ENDIF
+ 370 CONTINUE
+ 380 CONTINUE
+ IIP=IPC(1)
+ IIM=IMC(1)
+ ENDIF
+
+C...Common for scenarios I, II, II' and GH: reconnect strings.
+ IF(IACC.NE.0) THEN
+ MINT(32)=1
+ NJOIN=0
+ DO 390 IS=1,NNP+NNM
+ NJOIN=NJOIN+1
+ IF(IS.LE.IIP) THEN
+ I=INP(IS)
+ ELSEIF(IS.LE.IIP+NNM-IIM) THEN
+ I=INM(IS-IIP+IIM)
+ ELSEIF(IS.LE.IIP+NNM) THEN
+ I=INM(IS-IIP-NNM+IIM)
+ ELSE
+ I=INP(IS-NNM)
+ ENDIF
+ IJOIN(NJOIN)=I
+ IF(K(I,2).LT.0) THEN
+ CALL PYJOIN(NJOIN,IJOIN)
+ NJOIN=0
+ ENDIF
+ 390 CONTINUE
+
+C...Restore original event record if no reconnection.
+ ELSE
+ DO 400 I=NSD1+1,NOLD
+ IF(K(I,1).EQ.13.OR.K(I,1).EQ.14) THEN
+ K(I,4)=MOD(K(I,4),MSTU(5)**2)
+ K(I,5)=MOD(K(I,5),MSTU(5)**2)
+ ENDIF
+ 400 CONTINUE
+ DO 410 I=NOLD+1,N
+ K(K(I,3),1)=3
+ 410 CONTINUE
+ N=NOLD
+ ENDIF
+
+C...Boost back system.
+ CALL PYROBO(IW1,IW1,0D0,0D0,BEWW(1),BEWW(2),BEWW(3))
+ CALL PYROBO(IW2,IW2,0D0,0D0,BEWW(1),BEWW(2),BEWW(3))
+ IF(N.GT.NOLD) CALL PYROBO(NOLD+1,N,0D0,0D0,
+ & BEWW(1),BEWW(2),BEWW(3))
+
+C...Common part for intermediate and instantaneous scenarios.
+ ELSEIF(MSTP(115).EQ.11.OR.MSTP(115).EQ.12) THEN
+ MINT(32)=1
+
+C...Remove old shower products and reset showering ones.
+ N=NSD1+4
+ DO 420 I=NSD1+1,NSD1+4
+ K(I,1)=3
+ K(I,4)=MOD(K(I,4),MSTU(5)**2)
+ K(I,5)=MOD(K(I,5),MSTU(5)**2)
+ 420 CONTINUE
+
+C...Identify quark-antiquark pairs.
+ IQ1=NSD1+1
+ IQ2=NSD1+2
+ IQ3=NSD1+3
+ IF(K(IQ1,2)*K(IQ3,2).LT.0) IQ3=NSD1+4
+ IQ4=2*NSD1+7-IQ3
+
+C...Reconnect strings.
+ IJOIN(1)=IQ1
+ IJOIN(2)=IQ4
+ CALL PYJOIN(2,IJOIN)
+ IJOIN(1)=IQ3
+ IJOIN(2)=IQ2
+ CALL PYJOIN(2,IJOIN)
+
+C...Do new parton showers in intermediate scenario.
+ IF(MSTP(71).GE.1.AND.MSTP(115).EQ.11) THEN
+ MSTJ50=MSTJ(50)
+ MSTJ(50)=0
+ if(parj(200).ne.1.) CALL PYSHOW(IQ1,IQ2,P(IW1,5))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IQ1,IQ2,P(IW1,5))
+ if(parj(200).ne.1.) CALL PYSHOW(IQ3,IQ4,P(IW2,5))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IQ3,IQ4,P(IW2,5))
+ MSTJ(50)=MSTJ50
+
+C...Do new parton showers in instantaneous scenario.
+ ELSEIF(MSTP(71).GE.1.AND.MSTP(115).EQ.12) THEN
+ PPM2=(P(IQ1,4)+P(IQ4,4))**2-(P(IQ1,1)+P(IQ4,1))**2-
+ & (P(IQ1,2)+P(IQ4,2))**2-(P(IQ1,3)+P(IQ4,3))**2
+ PPM=SQRT(MAX(0D0,PPM2))
+ if(parj(200).ne.1.) CALL PYSHOW(IQ1,IQ4,PPM)
+ if(parj(200).eq.1.) CALL PYSHOWQ(IQ1,IQ4,PPM)
+ PPM2=(P(IQ3,4)+P(IQ2,4))**2-(P(IQ3,1)+P(IQ2,1))**2-
+ & (P(IQ3,2)+P(IQ2,2))**2-(P(IQ3,3)+P(IQ2,3))**2
+ PPM=SQRT(MAX(0D0,PPM2))
+ if(parj(200).ne.1.) CALL PYSHOW(IQ3,IQ2,PPM)
+ if(parj(200).eq.1.) CALL PYSHOWQ(IQ3,IQ2,PPM)
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYKLIM
+C...Checks generated variables against pre-set kinematical limits;
+C...also calculates limits on variables used in generation.
+
+ SUBROUTINE PYKLIM(ILIM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,
+ &/PYINT1/,/PYINT2/
+
+C...Common kinematical expressions.
+ MINT(51)=0
+ ISUB=MINT(1)
+ ISTSB=ISET(ISUB)
+ IF(ISUB.EQ.96) GOTO 100
+ SQM3=VINT(63)
+ SQM4=VINT(64)
+ IF(ILIM.NE.0) THEN
+ IF(ABS(SQM3).LT.1D-4.AND.ABS(SQM4).LT.1D-4) THEN
+ CKIN09=MAX(CKIN(9),CKIN(13))
+ CKIN10=MIN(CKIN(10),CKIN(14))
+ CKIN11=MAX(CKIN(11),CKIN(15))
+ CKIN12=MIN(CKIN(12),CKIN(16))
+ ELSE
+ CKIN09=MAX(CKIN(9),MIN(0D0,CKIN(13)))
+ CKIN10=MIN(CKIN(10),MAX(0D0,CKIN(14)))
+ CKIN11=MAX(CKIN(11),MIN(0D0,CKIN(15)))
+ CKIN12=MIN(CKIN(12),MAX(0D0,CKIN(16)))
+ ENDIF
+ ENDIF
+ IF(ILIM.NE.1) THEN
+ TAU=VINT(21)
+ RM3=SQM3/(TAU*VINT(2))
+ RM4=SQM4/(TAU*VINT(2))
+ BE34=SQRT(MAX(1D-20,(1D0-RM3-RM4)**2-4D0*RM3*RM4))
+ ENDIF
+ PTHMIN=CKIN(3)
+ IF(MIN(SQM3,SQM4).LT.CKIN(6)**2.AND.ISTSB.NE.1.AND.ISTSB.NE.3)
+ &PTHMIN=MAX(CKIN(3),CKIN(5))
+
+ IF(ILIM.EQ.0) THEN
+C...Check generated values of tau, y*, cos(theta-hat), and tau' against
+C...pre-set kinematical limits.
+ YST=VINT(22)
+ CTH=VINT(23)
+ TAUP=VINT(26)
+ TAUE=TAU
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUE=TAUP
+ X1=SQRT(TAUE)*EXP(YST)
+ X2=SQRT(TAUE)*EXP(-YST)
+ XF=X1-X2
+ IF(MINT(47).NE.1) THEN
+ IF(TAU*VINT(2).LT.CKIN(1)**2) MINT(51)=1
+ IF(CKIN(2).GE.0D0.AND.TAU*VINT(2).GT.CKIN(2)**2) MINT(51)=1
+ IF(YST.LT.CKIN(7).OR.YST.GT.CKIN(8)) MINT(51)=1
+ IF(XF.LT.CKIN(25).OR.XF.GT.CKIN(26)) MINT(51)=1
+ ENDIF
+ IF(MINT(45).NE.1) THEN
+ IF(X1.LT.CKIN(21).OR.X1.GT.CKIN(22)) MINT(51)=1
+ ENDIF
+ IF(MINT(46).NE.1) THEN
+ IF(X2.LT.CKIN(23).OR.X2.GT.CKIN(24)) MINT(51)=1
+ ENDIF
+ IF(MINT(45).EQ.2) THEN
+ IF(X1.GT.1D0-2D0*PARP(111)/VINT(1)) MINT(51)=1
+ ENDIF
+ IF(MINT(46).EQ.2) THEN
+ IF(X2.GT.1D0-2D0*PARP(111)/VINT(1)) MINT(51)=1
+ ENDIF
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
+ PTH=0.5D0*BE34*SQRT(TAU*VINT(2)*MAX(0D0,1D0-CTH**2))
+ EXPY3=MAX(1D-20,(1D0+RM3-RM4+BE34*CTH)/
+ & MAX(1D-20,(1D0+RM3-RM4-BE34*CTH)))
+ EXPY4=MAX(1D-20,(1D0-RM3+RM4-BE34*CTH)/
+ & MAX(1D-20,(1D0-RM3+RM4+BE34*CTH)))
+ Y3=YST+0.5D0*LOG(EXPY3)
+ Y4=YST+0.5D0*LOG(EXPY4)
+ YLARGE=MAX(Y3,Y4)
+ YSMALL=MIN(Y3,Y4)
+ ETALAR=20D0
+ ETASMA=-20D0
+ STH=SQRT(MAX(0D0,1D0-CTH**2))
+ EXSQ3=SQRT(MAX(1D-20,((1D0+RM3-RM4)*COSH(YST)+BE34*SINH(YST)*
+ & CTH)**2-4D0*RM3))
+ EXSQ4=SQRT(MAX(1D-20,((1D0-RM3+RM4)*COSH(YST)-BE34*SINH(YST)*
+ & CTH)**2-4D0*RM4))
+ IF(STH.GE.1D-10) THEN
+ EXPET3=((1D0+RM3-RM4)*SINH(YST)+BE34*COSH(YST)*CTH+EXSQ3)/
+ & (BE34*STH)
+ EXPET4=((1D0-RM3+RM4)*SINH(YST)-BE34*COSH(YST)*CTH+EXSQ4)/
+ & (BE34*STH)
+ ETA3=LOG(MIN(1D10,MAX(1D-10,EXPET3)))
+ ETA4=LOG(MIN(1D10,MAX(1D-10,EXPET4)))
+ ETALAR=MAX(ETA3,ETA4)
+ ETASMA=MIN(ETA3,ETA4)
+ ENDIF
+ CTS3=((1D0+RM3-RM4)*SINH(YST)+BE34*COSH(YST)*CTH)/EXSQ3
+ CTS4=((1D0-RM3+RM4)*SINH(YST)-BE34*COSH(YST)*CTH)/EXSQ4
+ CTSLAR=MIN(1D0,MAX(-1D0,CTS3,CTS4))
+ CTSSMA=MAX(-1D0,MIN(1D0,CTS3,CTS4))
+ SH=TAU*VINT(2)
+ RPTS=4D0*VINT(71)**2/SH
+ BE34L=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4-RPTS))
+ RM34=MAX(1D-20,2D0*RM3*RM4)
+ IF(2D0*VINT(71)**2/(VINT(21)*VINT(2)).LT.0.0001D0)
+ & RM34=MAX(RM34,2D0*VINT(71)**2/(VINT(21)*VINT(2)))
+ RTHM=(4D0*RM3*RM4+RPTS)/(1D0-RM3-RM4+BE34L)
+ THA=0.5D0*SH*MAX(RTHM,1D0-RM3-RM4-BE34*CTH)
+ UHA=0.5D0*SH*MAX(RTHM,1D0-RM3-RM4+BE34*CTH)
+ IF(PTH.LT.PTHMIN) MINT(51)=1
+ IF(CKIN(4).GE.0D0.AND.PTH.GT.CKIN(4)) MINT(51)=1
+ IF(YLARGE.LT.CKIN(9).OR.YLARGE.GT.CKIN(10)) MINT(51)=1
+ IF(YSMALL.LT.CKIN(11).OR.YSMALL.GT.CKIN(12)) MINT(51)=1
+ IF(ETALAR.LT.CKIN(13).OR.ETALAR.GT.CKIN(14)) MINT(51)=1
+ IF(ETASMA.LT.CKIN(15).OR.ETASMA.GT.CKIN(16)) MINT(51)=1
+ IF(CTSLAR.LT.CKIN(17).OR.CTSLAR.GT.CKIN(18)) MINT(51)=1
+ IF(CTSSMA.LT.CKIN(19).OR.CTSSMA.GT.CKIN(20)) MINT(51)=1
+ IF(CTH.LT.CKIN(27).OR.CTH.GT.CKIN(28)) MINT(51)=1
+ IF(THA.LT.CKIN(35)) MINT(51)=1
+ IF(CKIN(36).GE.0D0.AND.THA.GT.CKIN(36)) MINT(51)=1
+ IF(UHA.LT.CKIN(37)) MINT(51)=1
+ IF(CKIN(38).GE.0D0.AND.UHA.GT.CKIN(38)) MINT(51)=1
+ ENDIF
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) THEN
+ IF(TAUP*VINT(2).LT.CKIN(31)**2) MINT(51)=1
+ IF(CKIN(32).GE.0D0.AND.TAUP*VINT(2).GT.CKIN(32)**2) MINT(51)=1
+ ENDIF
+
+C...Additional cuts on W2 (approximately) in DIS.
+ IF(ISUB.EQ.10.AND.MINT(43).GE.2) THEN
+ XBJ=X2
+ IF(IABS(MINT(12)).LT.20) XBJ=X1
+ Q2BJ=THA
+ W2BJ=Q2BJ*(1D0-XBJ)/XBJ
+ IF(W2BJ.LT.CKIN(39)) MINT(51)=1
+ IF(CKIN(40).GT.0D0.AND.W2BJ.GT.CKIN(40)) MINT(51)=1
+ ENDIF
+
+ ELSEIF(ILIM.EQ.1) THEN
+C...Calculate limits on tau
+C...0) due to definition
+ TAUMN0=0D0
+ TAUMX0=1D0
+C...1) due to limits on subsystem mass
+ TAUMN1=CKIN(1)**2/VINT(2)
+ TAUMX1=1D0
+ IF(CKIN(2).GE.0D0) TAUMX1=CKIN(2)**2/VINT(2)
+C...2) due to limits on pT-hat (and non-overlapping rapidity intervals)
+ TM3=SQRT(SQM3+PTHMIN**2)
+ TM4=SQRT(SQM4+PTHMIN**2)
+ YDCOSH=1D0
+ IF(CKIN09.GT.CKIN12) YDCOSH=COSH(CKIN09-CKIN12)
+ TAUMN2=(TM3**2+2D0*TM3*TM4*YDCOSH+TM4**2)/VINT(2)
+ TAUMX2=1D0
+C...3) due to limits on pT-hat and cos(theta-hat)
+ CTH2MN=MIN(CKIN(27)**2,CKIN(28)**2)
+ CTH2MX=MAX(CKIN(27)**2,CKIN(28)**2)
+ TAUMN3=0D0
+ IF(CKIN(27)*CKIN(28).GT.0D0) TAUMN3=
+ & (SQRT(SQM3+PTHMIN**2/(1D0-CTH2MN))+
+ & SQRT(SQM4+PTHMIN**2/(1D0-CTH2MN)))**2/VINT(2)
+ TAUMX3=1D0
+ IF(CKIN(4).GE.0D0.AND.CTH2MX.LT.1D0) TAUMX3=
+ & (SQRT(SQM3+CKIN(4)**2/(1D0-CTH2MX))+
+ & SQRT(SQM4+CKIN(4)**2/(1D0-CTH2MX)))**2/VINT(2)
+C...4) due to limits on x1 and x2
+ TAUMN4=CKIN(21)*CKIN(23)
+ TAUMX4=CKIN(22)*CKIN(24)
+C...5) due to limits on xF
+ TAUMN5=0D0
+ TAUMX5=MAX(1D0-CKIN(25),1D0+CKIN(26))
+C...6) due to limits on that and uhat
+ TAUMN6=(SQM3+SQM4+CKIN(35)+CKIN(37))/VINT(2)
+ TAUMX6=1D0
+ IF(CKIN(36).GT.0D0.AND.CKIN(38).GT.0D0) TAUMX6=
+ & (SQM3+SQM4+CKIN(36)+CKIN(38))/VINT(2)
+
+C...Net effect of all separate limits.
+ VINT(11)=MAX(TAUMN0,TAUMN1,TAUMN2,TAUMN3,TAUMN4,TAUMN5,TAUMN6)
+ VINT(31)=MIN(TAUMX0,TAUMX1,TAUMX2,TAUMX3,TAUMX4,TAUMX5,TAUMX6)
+ IF(MINT(47).EQ.1.AND.(ISTSB.EQ.1.OR.ISTSB.EQ.2)) THEN
+ VINT(11)=1D0-1D-9
+ VINT(31)=1D0+1D-9
+ ELSEIF(MINT(47).EQ.5) THEN
+ VINT(31)=MIN(VINT(31),1D0-2D-10)
+ ELSEIF(MINT(47).GE.6) THEN
+ VINT(31)=MIN(VINT(31),1D0-1D-10)
+ ENDIF
+ IF(VINT(31).LE.VINT(11)) MINT(51)=1
+
+ ELSEIF(ILIM.EQ.2) THEN
+C...Calculate limits on y*
+ TAUE=TAU
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUE=VINT(26)
+ TAURT=SQRT(TAUE)
+C...0) due to kinematics
+ YSTMN0=LOG(TAURT)
+ YSTMX0=-YSTMN0
+C...1) due to explicit limits
+ YSTMN1=CKIN(7)
+ YSTMX1=CKIN(8)
+C...2) due to limits on x1
+ YSTMN2=LOG(MAX(TAUE,CKIN(21))/TAURT)
+ YSTMX2=LOG(MAX(TAUE,CKIN(22))/TAURT)
+C...3) due to limits on x2
+ YSTMN3=-LOG(MAX(TAUE,CKIN(24))/TAURT)
+ YSTMX3=-LOG(MAX(TAUE,CKIN(23))/TAURT)
+C...4) due to limits on xF
+ YEPMN4=0.5D0*ABS(CKIN(25))/TAURT
+ YSTMN4=SIGN(LOG(MAX(1D-20,SQRT(1D0+YEPMN4**2)+YEPMN4)),CKIN(25))
+ YEPMX4=0.5D0*ABS(CKIN(26))/TAURT
+ YSTMX4=SIGN(LOG(MAX(1D-20,SQRT(1D0+YEPMX4**2)+YEPMX4)),CKIN(26))
+C...5) due to simultaneous limits on y-large and y-small
+ YEPSMN=(RM3-RM4)*SINH(CKIN09-CKIN11)
+ YEPSMX=(RM3-RM4)*SINH(CKIN10-CKIN12)
+ YDIFMN=ABS(LOG(MAX(1D-20,SQRT(1D0+YEPSMN**2)-YEPSMN)))
+ YDIFMX=ABS(LOG(MAX(1D-20,SQRT(1D0+YEPSMX**2)-YEPSMX)))
+ YSTMN5=0.5D0*(CKIN09+CKIN11-YDIFMN)
+ YSTMX5=0.5D0*(CKIN10+CKIN12+YDIFMX)
+C...6) due to simultaneous limits on cos(theta-hat) and y-large or
+C... y-small
+ CTHLIM=SQRT(MAX(0D0,1D0-4D0*PTHMIN**2/(BE34**2*TAUE*VINT(2))))
+ RZMN=BE34*MAX(CKIN(27),-CTHLIM)
+ RZMX=BE34*MIN(CKIN(28),CTHLIM)
+ YEX3MX=(1D0+RM3-RM4+RZMX)/MAX(1D-10,1D0+RM3-RM4-RZMX)
+ YEX4MX=(1D0+RM4-RM3-RZMN)/MAX(1D-10,1D0+RM4-RM3+RZMN)
+ YEX3MN=MAX(1D-10,1D0+RM3-RM4+RZMN)/(1D0+RM3-RM4-RZMN)
+ YEX4MN=MAX(1D-10,1D0+RM4-RM3-RZMX)/(1D0+RM4-RM3+RZMX)
+ YSTMN6=CKIN09-0.5D0*LOG(MAX(YEX3MX,YEX4MX))
+ YSTMX6=CKIN12-0.5D0*LOG(MIN(YEX3MN,YEX4MN))
+
+C...Net effect of all separate limits.
+ VINT(12)=MAX(YSTMN0,YSTMN1,YSTMN2,YSTMN3,YSTMN4,YSTMN5,YSTMN6)
+ VINT(32)=MIN(YSTMX0,YSTMX1,YSTMX2,YSTMX3,YSTMX4,YSTMX5,YSTMX6)
+ IF(MINT(47).EQ.1) THEN
+ VINT(12)=-1D-9
+ VINT(32)=1D-9
+ ELSEIF(MINT(47).EQ.2.OR.MINT(47).EQ.6) THEN
+ VINT(12)=(1D0-1D-9)*YSTMX0
+ VINT(32)=(1D0+1D-9)*YSTMX0
+ ELSEIF(MINT(47).EQ.3.OR.MINT(47).EQ.7) THEN
+ VINT(12)=-(1D0+1D-9)*YSTMX0
+ VINT(32)=-(1D0-1D-9)*YSTMX0
+ ELSEIF(MINT(47).EQ.5) THEN
+ YSTEE=LOG((1D0-1D-10)/TAURT)
+ VINT(12)=MAX(VINT(12),-YSTEE)
+ VINT(32)=MIN(VINT(32),YSTEE)
+ ENDIF
+ IF(VINT(32).LE.VINT(12)) MINT(51)=1
+
+ ELSEIF(ILIM.EQ.3) THEN
+C...Calculate limits on cos(theta-hat)
+ YST=VINT(22)
+C...0) due to definition
+ CTNMN0=-1D0
+ CTNMX0=0D0
+ CTPMN0=0D0
+ CTPMX0=1D0
+C...1) due to explicit limits
+ CTNMN1=MIN(0D0,CKIN(27))
+ CTNMX1=MIN(0D0,CKIN(28))
+ CTPMN1=MAX(0D0,CKIN(27))
+ CTPMX1=MAX(0D0,CKIN(28))
+C...2) due to limits on pT-hat
+ CTNMN2=-SQRT(MAX(0D0,1D0-4D0*PTHMIN**2/(BE34**2*TAU*VINT(2))))
+ CTPMX2=-CTNMN2
+ CTNMX2=0D0
+ CTPMN2=0D0
+ IF(CKIN(4).GE.0D0) THEN
+ CTNMX2=-SQRT(MAX(0D0,1D0-4D0*CKIN(4)**2/
+ & (BE34**2*TAU*VINT(2))))
+ CTPMN2=-CTNMX2
+ ENDIF
+C...3) due to limits on y-large and y-small
+ CTNMN3=MIN(0D0,MAX((1D0+RM3-RM4)/BE34*TANH(CKIN11-YST),
+ & -(1D0-RM3+RM4)/BE34*TANH(CKIN10-YST)))
+ CTNMX3=MIN(0D0,(1D0+RM3-RM4)/BE34*TANH(CKIN12-YST),
+ & -(1D0-RM3+RM4)/BE34*TANH(CKIN09-YST))
+ CTPMN3=MAX(0D0,(1D0+RM3-RM4)/BE34*TANH(CKIN09-YST),
+ & -(1D0-RM3+RM4)/BE34*TANH(CKIN12-YST))
+ CTPMX3=MAX(0D0,MIN((1D0+RM3-RM4)/BE34*TANH(CKIN10-YST),
+ & -(1D0-RM3+RM4)/BE34*TANH(CKIN11-YST)))
+C...4) due to limits on that
+ CTNMN4=-1D0
+ CTNMX4=0D0
+ CTPMN4=0D0
+ CTPMX4=1D0
+ SH=TAU*VINT(2)
+ IF(CKIN(35).GT.0D0) THEN
+ CTLIM=(1D0-RM3-RM4-2D0*CKIN(35)/SH)/BE34
+ IF(CTLIM.GT.0D0) THEN
+ CTPMX4=CTLIM
+ ELSE
+ CTPMX4=0D0
+ CTNMX4=CTLIM
+ ENDIF
+ ENDIF
+ IF(CKIN(36).GT.0D0) THEN
+ CTLIM=(1D0-RM3-RM4-2D0*CKIN(36)/SH)/BE34
+ IF(CTLIM.LT.0D0) THEN
+ CTNMN4=CTLIM
+ ELSE
+ CTNMN4=0D0
+ CTPMN4=CTLIM
+ ENDIF
+ ENDIF
+C...5) due to limits on uhat
+ CTNMN5=-1D0
+ CTNMX5=0D0
+ CTPMN5=0D0
+ CTPMX5=1D0
+ IF(CKIN(37).GT.0D0) THEN
+ CTLIM=(2D0*CKIN(37)/SH-(1D0-RM3-RM4))/BE34
+ IF(CTLIM.LT.0D0) THEN
+ CTNMN5=CTLIM
+ ELSE
+ CTNMN5=0D0
+ CTPMN5=CTLIM
+ ENDIF
+ ENDIF
+ IF(CKIN(38).GT.0D0) THEN
+ CTLIM=(2D0*CKIN(38)/SH-(1D0-RM3-RM4))/BE34
+ IF(CTLIM.GT.0D0) THEN
+ CTPMX5=CTLIM
+ ELSE
+ CTPMX5=0D0
+ CTNMX5=CTLIM
+ ENDIF
+ ENDIF
+
+C...Net effect of all separate limits.
+ VINT(13)=MAX(CTNMN0,CTNMN1,CTNMN2,CTNMN3,CTNMN4,CTNMN5)
+ VINT(33)=MIN(CTNMX0,CTNMX1,CTNMX2,CTNMX3,CTNMX4,CTNMX5)
+ VINT(14)=MAX(CTPMN0,CTPMN1,CTPMN2,CTPMN3,CTPMN4,CTPMN5)
+ VINT(34)=MIN(CTPMX0,CTPMX1,CTPMX2,CTPMX3,CTPMX4,CTPMX5)
+ IF(VINT(33).LE.VINT(13).AND.VINT(34).LE.VINT(14)) MINT(51)=1
+
+ IF(VINT(14).GT.VINT(34)) VINT(34)=VINT(14)
+ IF(VINT(13).GT.VINT(33)) VINT(33)=VINT(13)
+
+ ELSEIF(ILIM.EQ.4) THEN
+C...Calculate limits on tau'
+C...0) due to kinematics
+ TAPMN0=TAU
+ IF(ISTSB.EQ.5.AND.VINT(201).GT.0D0) THEN
+ PQRAT=(VINT(201)+VINT(206))/VINT(1)
+ TAPMN0=(SQRT(TAU)+PQRAT)**2
+ ENDIF
+ TAPMX0=1D0
+C...1) due to explicit limits
+ TAPMN1=CKIN(31)**2/VINT(2)
+ TAPMX1=1D0
+ IF(CKIN(32).GE.0D0) TAPMX1=CKIN(32)**2/VINT(2)
+
+C...Net effect of all separate limits.
+ VINT(16)=MAX(TAPMN0,TAPMN1)
+ VINT(36)=MIN(TAPMX0,TAPMX1)
+ IF(MINT(47).EQ.1) THEN
+ VINT(16)=1D0-1D-9
+ VINT(36)=1D0+1D-9
+ ELSEIF(MINT(47).EQ.5) THEN
+ VINT(36)=MIN(VINT(36),1D0-2D-10)
+ ELSEIF(MINT(47).EQ.6.OR.MINT(47).EQ.7) THEN
+ VINT(36)=MIN(VINT(36),1D0-1D-10)
+ ENDIF
+ IF(VINT(36).LE.VINT(16)) MINT(51)=1
+
+ ENDIF
+ RETURN
+
+C...Special case for low-pT and multiple interactions:
+C...effective kinematical limits for tau, y*, cos(theta-hat).
+ 100 IF(ILIM.EQ.0) THEN
+ ELSEIF(ILIM.EQ.1) THEN
+ IF(MSTP(82).LE.1) THEN
+ VINT(11)=4D0*(PARP(81)*(VINT(1)/PARP(89))**PARP(90))**2/
+ & VINT(2)
+ ELSE
+ VINT(11)=(PARP(82)*(VINT(1)/PARP(89))**PARP(90))**2/VINT(2)
+ ENDIF
+ VINT(31)=1D0
+ ELSEIF(ILIM.EQ.2) THEN
+ VINT(12)=0.5D0*LOG(VINT(21))
+ VINT(32)=-VINT(12)
+ ELSEIF(ILIM.EQ.3) THEN
+ IF(MSTP(82).LE.1) THEN
+ ST2EFF=4D0*(PARP(81)*(VINT(1)/PARP(89))**PARP(90))**2/
+ & (VINT(21)*VINT(2))
+ ELSE
+ ST2EFF=0.01D0*(PARP(82)*(VINT(1)/PARP(89))**PARP(90))**2/
+ & (VINT(21)*VINT(2))
+ ENDIF
+ VINT(13)=-SQRT(MAX(0D0,1D0-ST2EFF))
+ VINT(33)=0D0
+ VINT(14)=0D0
+ VINT(34)=-VINT(13)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYKMAP
+C...Maps a uniform distribution into a distribution of a kinematical
+C...variable according to one of the possibilities allowed. It is
+C...assumed that kinematical limits have been set by a PYKLIM call.
+
+ SUBROUTINE PYKMAP(IVAR,MVAR,VVAR)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYSUBS/,/PYPARS/,/PYINT1/,/PYINT2/
+
+C...Convert VVAR to tau variable.
+ ISUB=MINT(1)
+ ISTSB=ISET(ISUB)
+ IF(IVAR.EQ.1) THEN
+ TAUMIN=VINT(11)
+ TAUMAX=VINT(31)
+ IF(MVAR.EQ.3.OR.MVAR.EQ.4) THEN
+ TAURE=VINT(73)
+ GAMRE=VINT(74)
+ ELSEIF(MVAR.EQ.5.OR.MVAR.EQ.6) THEN
+ TAURE=VINT(75)
+ GAMRE=VINT(76)
+ ELSEIF(MVAR.EQ.8.OR.MVAR.EQ.9) THEN
+ TAURE=VINT(77)
+ GAMRE=VINT(78)
+ ENDIF
+ IF(MINT(47).EQ.1.AND.(ISTSB.EQ.1.OR.ISTSB.EQ.2)) THEN
+ TAU=1D0
+ ELSEIF(MVAR.EQ.1) THEN
+ TAU=TAUMIN*(TAUMAX/TAUMIN)**VVAR
+ ELSEIF(MVAR.EQ.2) THEN
+ TAU=TAUMAX*TAUMIN/(TAUMIN+(TAUMAX-TAUMIN)*VVAR)
+ ELSEIF(MVAR.EQ.3.OR.MVAR.EQ.5.OR.MVAR.EQ.8) THEN
+ RATGEN=(TAURE+TAUMAX)/(TAURE+TAUMIN)*TAUMIN/TAUMAX
+ TAU=TAURE*TAUMIN/((TAURE+TAUMIN)*RATGEN**VVAR-TAUMIN)
+ ELSEIF(MVAR.EQ.4.OR.MVAR.EQ.6.OR.MVAR.EQ.9) THEN
+ AUPP=ATAN((TAUMAX-TAURE)/GAMRE)
+ ALOW=ATAN((TAUMIN-TAURE)/GAMRE)
+ TAU=TAURE+GAMRE*TAN(ALOW+(AUPP-ALOW)*VVAR)
+ ELSEIF(MINT(47).EQ.5) THEN
+ AUPP=LOG(MAX(2D-10,1D0-TAUMAX))
+ ALOW=LOG(MAX(2D-10,1D0-TAUMIN))
+ TAU=1D0-EXP(AUPP+VVAR*(ALOW-AUPP))
+ ELSE
+ AUPP=LOG(MAX(1D-10,1D0-TAUMAX))
+ ALOW=LOG(MAX(1D-10,1D0-TAUMIN))
+ TAU=1D0-EXP(AUPP+VVAR*(ALOW-AUPP))
+ ENDIF
+ VINT(21)=MIN(TAUMAX,MAX(TAUMIN,TAU))
+
+C...Convert VVAR to y* variable.
+ ELSEIF(IVAR.EQ.2) THEN
+ YSTMIN=VINT(12)
+ YSTMAX=VINT(32)
+ TAUE=VINT(21)
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUE=VINT(26)
+ IF(MINT(47).EQ.1) THEN
+ YST=0D0
+ ELSEIF(MINT(47).EQ.2.OR.MINT(47).EQ.6) THEN
+ YST=-0.5D0*LOG(TAUE)
+ ELSEIF(MINT(47).EQ.3.OR.MINT(47).EQ.7) THEN
+ YST=0.5D0*LOG(TAUE)
+ ELSEIF(MVAR.EQ.1) THEN
+ YST=YSTMIN+(YSTMAX-YSTMIN)*SQRT(VVAR)
+ ELSEIF(MVAR.EQ.2) THEN
+ YST=YSTMAX-(YSTMAX-YSTMIN)*SQRT(1D0-VVAR)
+ ELSEIF(MVAR.EQ.3) THEN
+ AUPP=ATAN(EXP(YSTMAX))
+ ALOW=ATAN(EXP(YSTMIN))
+ YST=LOG(TAN(ALOW+(AUPP-ALOW)*VVAR))
+ ELSEIF(MVAR.EQ.4) THEN
+ YST0=-0.5D0*LOG(TAUE)
+ AUPP=LOG(MAX(1D-10,EXP(YST0-YSTMIN)-1D0))
+ ALOW=LOG(MAX(1D-10,EXP(YST0-YSTMAX)-1D0))
+ YST=YST0-LOG(1D0+EXP(ALOW+VVAR*(AUPP-ALOW)))
+ ELSE
+ YST0=-0.5D0*LOG(TAUE)
+ AUPP=LOG(MAX(1D-10,EXP(YST0+YSTMIN)-1D0))
+ ALOW=LOG(MAX(1D-10,EXP(YST0+YSTMAX)-1D0))
+ YST=LOG(1D0+EXP(AUPP+VVAR*(ALOW-AUPP)))-YST0
+ ENDIF
+ VINT(22)=MIN(YSTMAX,MAX(YSTMIN,YST))
+
+C...Convert VVAR to cos(theta-hat) variable.
+ ELSEIF(IVAR.EQ.3) THEN
+ RM34=MAX(1D-20,2D0*VINT(63)*VINT(64)/(VINT(21)*VINT(2))**2)
+ RSQM=1D0+RM34
+ IF(2D0*VINT(71)**2/(VINT(21)*VINT(2)).LT.0.0001D0)
+ & RM34=MAX(RM34,2D0*VINT(71)**2/(VINT(21)*VINT(2)))
+ CTNMIN=VINT(13)
+ CTNMAX=VINT(33)
+ CTPMIN=VINT(14)
+ CTPMAX=VINT(34)
+ IF(MVAR.EQ.1) THEN
+ ANEG=CTNMAX-CTNMIN
+ APOS=CTPMAX-CTPMIN
+ IF(ANEG.GT.0D0.AND.VVAR*(ANEG+APOS).LE.ANEG) THEN
+ VCTN=VVAR*(ANEG+APOS)/ANEG
+ CTH=CTNMIN+(CTNMAX-CTNMIN)*VCTN
+ ELSE
+ VCTP=(VVAR*(ANEG+APOS)-ANEG)/APOS
+ CTH=CTPMIN+(CTPMAX-CTPMIN)*VCTP
+ ENDIF
+ ELSEIF(MVAR.EQ.2) THEN
+ RMNMIN=MAX(RM34,RSQM-CTNMIN)
+ RMNMAX=MAX(RM34,RSQM-CTNMAX)
+ RMPMIN=MAX(RM34,RSQM-CTPMIN)
+ RMPMAX=MAX(RM34,RSQM-CTPMAX)
+ ANEG=LOG(RMNMIN/RMNMAX)
+ APOS=LOG(RMPMIN/RMPMAX)
+ IF(ANEG.GT.0D0.AND.VVAR*(ANEG+APOS).LE.ANEG) THEN
+ VCTN=VVAR*(ANEG+APOS)/ANEG
+ CTH=RSQM-RMNMIN*(RMNMAX/RMNMIN)**VCTN
+ ELSE
+ VCTP=(VVAR*(ANEG+APOS)-ANEG)/APOS
+ CTH=RSQM-RMPMIN*(RMPMAX/RMPMIN)**VCTP
+ ENDIF
+ ELSEIF(MVAR.EQ.3) THEN
+ RMNMIN=MAX(RM34,RSQM+CTNMIN)
+ RMNMAX=MAX(RM34,RSQM+CTNMAX)
+ RMPMIN=MAX(RM34,RSQM+CTPMIN)
+ RMPMAX=MAX(RM34,RSQM+CTPMAX)
+ ANEG=LOG(RMNMAX/RMNMIN)
+ APOS=LOG(RMPMAX/RMPMIN)
+ IF(ANEG.GT.0D0.AND.VVAR*(ANEG+APOS).LE.ANEG) THEN
+ VCTN=VVAR*(ANEG+APOS)/ANEG
+ CTH=RMNMIN*(RMNMAX/RMNMIN)**VCTN-RSQM
+ ELSE
+ VCTP=(VVAR*(ANEG+APOS)-ANEG)/APOS
+ CTH=RMPMIN*(RMPMAX/RMPMIN)**VCTP-RSQM
+ ENDIF
+ ELSEIF(MVAR.EQ.4) THEN
+ RMNMIN=MAX(RM34,RSQM-CTNMIN)
+ RMNMAX=MAX(RM34,RSQM-CTNMAX)
+ RMPMIN=MAX(RM34,RSQM-CTPMIN)
+ RMPMAX=MAX(RM34,RSQM-CTPMAX)
+ ANEG=1D0/RMNMAX-1D0/RMNMIN
+ APOS=1D0/RMPMAX-1D0/RMPMIN
+ IF(ANEG.GT.0D0.AND.VVAR*(ANEG+APOS).LE.ANEG) THEN
+ VCTN=VVAR*(ANEG+APOS)/ANEG
+ CTH=RSQM-1D0/(1D0/RMNMIN+ANEG*VCTN)
+ ELSE
+ VCTP=(VVAR*(ANEG+APOS)-ANEG)/APOS
+ CTH=RSQM-1D0/(1D0/RMPMIN+APOS*VCTP)
+ ENDIF
+ ELSEIF(MVAR.EQ.5) THEN
+ RMNMIN=MAX(RM34,RSQM+CTNMIN)
+ RMNMAX=MAX(RM34,RSQM+CTNMAX)
+ RMPMIN=MAX(RM34,RSQM+CTPMIN)
+ RMPMAX=MAX(RM34,RSQM+CTPMAX)
+ ANEG=1D0/RMNMIN-1D0/RMNMAX
+ APOS=1D0/RMPMIN-1D0/RMPMAX
+ IF(ANEG.GT.0D0.AND.VVAR*(ANEG+APOS).LE.ANEG) THEN
+ VCTN=VVAR*(ANEG+APOS)/ANEG
+ CTH=1D0/(1D0/RMNMIN-ANEG*VCTN)-RSQM
+ ELSE
+ VCTP=(VVAR*(ANEG+APOS)-ANEG)/APOS
+ CTH=1D0/(1D0/RMPMIN-APOS*VCTP)-RSQM
+ ENDIF
+ ENDIF
+ IF(CTH.LT.0D0) CTH=MIN(CTNMAX,MAX(CTNMIN,CTH))
+ IF(CTH.GT.0D0) CTH=MIN(CTPMAX,MAX(CTPMIN,CTH))
+ VINT(23)=CTH
+
+C...Convert VVAR to tau' variable.
+ ELSEIF(IVAR.EQ.4) THEN
+ TAU=VINT(21)
+ TAUPMN=VINT(16)
+ TAUPMX=VINT(36)
+ IF(MINT(47).EQ.1) THEN
+ TAUP=1D0
+ ELSEIF(MVAR.EQ.1) THEN
+ TAUP=TAUPMN*(TAUPMX/TAUPMN)**VVAR
+ ELSEIF(MVAR.EQ.2) THEN
+ AUPP=(1D0-TAU/TAUPMX)**4
+ ALOW=(1D0-TAU/TAUPMN)**4
+ TAUP=TAU/MAX(1D-10,1D0-(ALOW+(AUPP-ALOW)*VVAR)**0.25D0)
+ ELSEIF(MINT(47).EQ.5) THEN
+ AUPP=LOG(MAX(2D-10,1D0-TAUPMX))
+ ALOW=LOG(MAX(2D-10,1D0-TAUPMN))
+ TAUP=1D0-EXP(AUPP+VVAR*(ALOW-AUPP))
+ ELSE
+ AUPP=LOG(MAX(1D-10,1D0-TAUPMX))
+ ALOW=LOG(MAX(1D-10,1D0-TAUPMN))
+ TAUP=1D0-EXP(AUPP+VVAR*(ALOW-AUPP))
+ ENDIF
+ VINT(26)=MIN(TAUPMX,MAX(TAUPMN,TAUP))
+
+C...Selection of extra variables needed in 2 -> 3 process:
+C...pT1, pT2, phi1, phi2, y3 for three outgoing particles.
+C...Since no options are available, the functions of PYKLIM
+C...and PYKMAP are joint for these choices.
+ ELSEIF(IVAR.EQ.5) THEN
+
+C...Read out total energy and particle masses.
+ MINT(51)=0
+ MPTPK=1
+ IF(ISUB.EQ.123.OR.ISUB.EQ.124.OR.ISUB.EQ.173.OR.ISUB.EQ.174
+ & .OR.ISUB.EQ.178.OR.ISUB.EQ.179.OR.ISUB.EQ.351.OR.ISUB.EQ.352)
+ & MPTPK=2
+ SHP=VINT(26)*VINT(2)
+ SHPR=SQRT(SHP)
+ PM1=VINT(201)
+ PM2=VINT(206)
+ PM3=SQRT(VINT(21))*VINT(1)
+ IF(PM1+PM2+PM3.GT.0.9999D0*SHPR) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ PMRS1=VINT(204)**2
+ PMRS2=VINT(209)**2
+
+C...Specify coefficients of pT choice; upper and lower limits.
+ IF(MPTPK.EQ.1) THEN
+ HWT1=0.4D0
+ HWT2=0.4D0
+ ELSE
+ HWT1=0.05D0
+ HWT2=0.05D0
+ ENDIF
+ HWT3=1D0-HWT1-HWT2
+ PTSMX1=((SHP-PM1**2-(PM2+PM3)**2)**2-(2D0*PM1*(PM2+PM3))**2)/
+ & (4D0*SHP)
+ IF(CKIN(52).GT.0D0) PTSMX1=MIN(PTSMX1,CKIN(52)**2)
+ PTSMN1=CKIN(51)**2
+ PTSMX2=((SHP-PM2**2-(PM1+PM3)**2)**2-(2D0*PM2*(PM1+PM3))**2)/
+ & (4D0*SHP)
+ IF(CKIN(54).GT.0D0) PTSMX2=MIN(PTSMX2,CKIN(54)**2)
+ PTSMN2=CKIN(53)**2
+
+C...Select transverse momenta according to
+C...dp_T^2 * (a + b/(M^2 + p_T^2) + c/(M^2 + p_T^2)^2).
+ HMX=PMRS1+PTSMX1
+ HMN=PMRS1+PTSMN1
+ IF(HMX.LT.1.0001D0*HMN) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ HDE=PTSMX1-PTSMN1
+ RPT=PYR(0)
+ IF(RPT.LT.HWT1) THEN
+ PTS1=PTSMN1+PYR(0)*HDE
+ ELSEIF(RPT.LT.HWT1+HWT2) THEN
+ PTS1=MAX(PTSMN1,HMN*(HMX/HMN)**PYR(0)-PMRS1)
+ ELSE
+ PTS1=MAX(PTSMN1,HMN*HMX/(HMN+PYR(0)*HDE)-PMRS1)
+ ENDIF
+ WTPTS1=HDE/(HWT1+HWT2*HDE/(LOG(HMX/HMN)*(PMRS1+PTS1))+
+ & HWT3*HMN*HMX/(PMRS1+PTS1)**2)
+ HMX=PMRS2+PTSMX2
+ HMN=PMRS2+PTSMN2
+ IF(HMX.LT.1.0001D0*HMN) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ HDE=PTSMX2-PTSMN2
+ RPT=PYR(0)
+ IF(RPT.LT.HWT1) THEN
+ PTS2=PTSMN2+PYR(0)*HDE
+ ELSEIF(RPT.LT.HWT1+HWT2) THEN
+ PTS2=MAX(PTSMN2,HMN*(HMX/HMN)**PYR(0)-PMRS2)
+ ELSE
+ PTS2=MAX(PTSMN2,HMN*HMX/(HMN+PYR(0)*HDE)-PMRS2)
+ ENDIF
+ WTPTS2=HDE/(HWT1+HWT2*HDE/(LOG(HMX/HMN)*(PMRS2+PTS2))+
+ & HWT3*HMN*HMX/(PMRS2+PTS2)**2)
+
+C...Select azimuthal angles and check pT choice.
+ PHI1=PARU(2)*PYR(0)
+ PHI2=PARU(2)*PYR(0)
+ PHIR=PHI2-PHI1
+ PTS3=MAX(0D0,PTS1+PTS2+2D0*SQRT(PTS1*PTS2)*COS(PHIR))
+ IF(PTS3.LT.CKIN(55)**2.OR.(CKIN(56).GT.0D0.AND.PTS3.GT.
+ & CKIN(56)**2)) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Calculate transverse masses and check phase space not closed.
+ PMS1=PM1**2+PTS1
+ PMS2=PM2**2+PTS2
+ PMS3=PM3**2+PTS3
+ PMT1=SQRT(PMS1)
+ PMT2=SQRT(PMS2)
+ PMT3=SQRT(PMS3)
+ PM12=(PMT1+PMT2)**2
+ IF(PMT1+PMT2+PMT3.GT.0.9999D0*SHPR) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Select rapidity for particle 3 and check phase space not closed.
+ Y3MAX=LOG((SHP+PMS3-PM12+SQRT(MAX(0D0,(SHP-PMS3-PM12)**2-
+ & 4D0*PMS3*PM12)))/(2D0*SHPR*PMT3))
+ IF(Y3MAX.LT.1D-6) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ Y3=(2D0*PYR(0)-1D0)*0.999999D0*Y3MAX
+ PZ3=PMT3*SINH(Y3)
+ PE3=PMT3*COSH(Y3)
+
+C...Find momentum transfers in two mirror solutions (in 1-2 frame).
+ PZ12=-PZ3
+ PE12=SHPR-PE3
+ PMS12=PE12**2-PZ12**2
+ SQL12=SQRT(MAX(0D0,(PMS12-PMS1-PMS2)**2-4D0*PMS1*PMS2))
+ IF(SQL12.LT.1D-6*SHP) THEN
+ MINT(51)=1
+ RETURN
+ ENDIF
+ PMM1=PMS12+PMS1-PMS2
+ PMM2=PMS12+PMS2-PMS1
+ TFAC=-SHPR/(2D0*PMS12)
+ T1P=TFAC*(PE12-PZ12)*(PMM1-SQL12)
+ T1N=TFAC*(PE12-PZ12)*(PMM1+SQL12)
+ T2P=TFAC*(PE12+PZ12)*(PMM2-SQL12)
+ T2N=TFAC*(PE12+PZ12)*(PMM2+SQL12)
+
+C...Construct relative mirror weights and make choice.
+ IF(MPTPK.EQ.1.OR.ISUB.EQ.351.OR.ISUB.EQ.352) THEN
+ WTPU=1D0
+ WTNU=1D0
+ ELSE
+ WTPU=1D0/((T1P-PMRS1)*(T2P-PMRS2))**2
+ WTNU=1D0/((T1N-PMRS1)*(T2N-PMRS2))**2
+ ENDIF
+ WTP=WTPU/(WTPU+WTNU)
+ WTN=WTNU/(WTPU+WTNU)
+ EPS=1D0
+ IF(WTN.GT.PYR(0)) EPS=-1D0
+
+C...Store result of variable choice and associated weights.
+ VINT(202)=PTS1
+ VINT(207)=PTS2
+ VINT(203)=PHI1
+ VINT(208)=PHI2
+ VINT(205)=WTPTS1
+ VINT(210)=WTPTS2
+ VINT(211)=Y3
+ VINT(212)=Y3MAX
+ VINT(213)=EPS
+ IF(EPS.GT.0D0) THEN
+ VINT(214)=1D0/WTP
+ VINT(215)=T1P
+ VINT(216)=T2P
+ ELSE
+ VINT(214)=1D0/WTN
+ VINT(215)=T1N
+ VINT(216)=T2N
+ ENDIF
+ VINT(217)=-0.5D0*TFAC*(PE12-PZ12)*(PMM2+EPS*SQL12)
+ VINT(218)=-0.5D0*TFAC*(PE12+PZ12)*(PMM1+EPS*SQL12)
+ VINT(219)=0.5D0*(PMS12-PTS3)
+ VINT(220)=SQL12
+ ENDIF
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYSIGH
+C...Differential matrix elements for all included subprocesses
+C...Note that what is coded is (disregarding the COMFAC factor)
+C...1) for 2 -> 1 processes: s-hat/pi*d(sigma-hat), where,
+C...when d(sigma-hat) is given in the zero-width limit, the delta
+C...function in tau is replaced by a (modified) Breit-Wigner:
+C...1/pi*s*H_res/((s*tau-m_res^2)^2+H_res^2),
+C...where H_res = s-hat/m_res*Gamma_res(s-hat);
+C...2) for 2 -> 2 processes: (s-hat)**2/pi*d(sigma-hat)/d(t-hat);
+C...i.e., dimensionless quantities
+C...3) for 2 -> 3 processes: abs(M)^2, where the total cross-section is
+C...Integral abs(M)^2/(2shat') * (prod_(i=1)^3 d^3p_i/((2pi)^3*2E_i)) *
+C...(2pi)^4 delta^4(P - sum p_i)
+C...COMFAC contains the factor pi/s (or equivalent) and
+C...the conversion factor from GeV^-2 to mb
+
+ SUBROUTINE PYSIGH(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ COMMON/PYTCCO/COEFX(194:380,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,
+ &/PYINT1/,/PYINT2/,/PYINT3/,/PYINT4/,/PYINT5/,/PYINT7/,
+ &/PYMSSM/,/PYSSMT/,/PYTCSM/,/PYSGCM/,/PYTCCO/
+C...Local arrays and complex variables
+ DIMENSION XPQ(-25:25)
+
+C...Map of processes onto which routine to call
+C...in order to evaluate cross section:
+C...0 = not implemented;
+C...1 = standard QCD (including photons);
+C...2 = heavy flavours;
+C...3 = W/Z;
+C...4 = Higgs (2 doublets; including longitudinal W/Z scattering);
+C...5 = SUSY;
+C...6 = Technicolor;
+C...7 = exotics (Z'/W'/LQ/R/f*/H++/Z_R/W_R/G*).
+ DIMENSION MAPPR(500)
+ DATA (MAPPR(I),I=1,180)/
+ & 3, 3, 4, 0, 4, 0, 0, 4, 0, 1,
+ 1 1, 1, 1, 1, 3, 3, 0, 1, 3, 3,
+ 2 0, 3, 3, 4, 3, 4, 0, 1, 1, 3,
+ 3 3, 4, 1, 1, 3, 3, 0, 0, 0, 0,
+ 4 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 5 0, 0, 1, 1, 0, 0, 0, 1, 0, 0,
+ 6 0, 0, 0, 0, 0, 0, 0, 1, 3, 3,
+ 7 4, 4, 4, 0, 0, 4, 4, 0, 0, 1,
+ 8 2, 2, 2, 2, 2, 2, 2, 2, 2, 0,
+ 9 1, 1, 1, 1, 1, 1, 0, 0, 1, 0,
+ & 0, 4, 4, 2, 2, 2, 2, 2, 0, 4,
+ 1 4, 4, 4, 1, 1, 0, 0, 0, 0, 0,
+ 2 4, 4, 4, 4, 0, 0, 0, 0, 0, 0,
+ 3 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 4 7, 7, 4, 7, 7, 7, 7, 7, 6, 0,
+ 5 4, 4, 4, 0, 0, 4, 4, 4, 0, 0,
+ 6 4, 7, 7, 7, 6, 6, 7, 7, 7, 0,
+ 7 4, 4, 4, 4, 0, 4, 4, 4, 4, 0/
+ DATA (MAPPR(I),I=181,500)/
+ 8 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
+ 9 6, 6, 6, 6, 6, 0, 0, 0, 0, 0,
+ & 100*5,
+ & 5, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1 30*0,
+ 4 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
+ 5 7, 7, 7, 7, 0, 0, 0, 0, 0, 0,
+ 6 6, 6, 6, 6, 6, 6, 6, 6, 0, 6,
+ 7 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
+ 8 6, 6, 6, 6, 6, 6, 6, 6, 0, 0,
+ 9 7, 7, 7, 7, 7, 0, 0, 0, 0, 0,
+ & 4, 4, 18*0,
+ 2 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 3 2, 2, 2, 2, 2, 2, 2, 2, 2, 0,
+ 4 20*0,
+ 6 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 7 2, 2, 2, 2, 2, 2, 2, 2, 2, 0,
+ 8 20*0/
+
+C...Reset number of channels and cross-section
+ NCHN=0
+ SIGS=0D0
+
+C...Read process to consider.
+ ISUB=MINT(1)
+ ISUBSV=ISUB
+ MAP=MAPPR(ISUB)
+
+C...Read kinematical variables and limits
+ ISTSB=ISET(ISUBSV)
+ TAUMIN=VINT(11)
+ YSTMIN=VINT(12)
+ CTNMIN=VINT(13)
+ CTPMIN=VINT(14)
+ TAUPMN=VINT(16)
+ TAU=VINT(21)
+ YST=VINT(22)
+ CTH=VINT(23)
+ XT2=VINT(25)
+ TAUP=VINT(26)
+ TAUMAX=VINT(31)
+ YSTMAX=VINT(32)
+ CTNMAX=VINT(33)
+ CTPMAX=VINT(34)
+ TAUPMX=VINT(36)
+
+C...Derive kinematical quantities
+ TAUE=TAU
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUE=TAUP
+ X(1)=SQRT(TAUE)*EXP(YST)
+ X(2)=SQRT(TAUE)*EXP(-YST)
+ IF(MINT(45).EQ.2.AND.ISTSB.GE.1) THEN
+ IF(X(1).GT.1D0-1D-7) RETURN
+ ELSEIF(MINT(45).EQ.3) THEN
+ X(1)=MIN(1D0-1.1D-10,X(1))
+ ENDIF
+ IF(MINT(46).EQ.2.AND.ISTSB.GE.1) THEN
+ IF(X(2).GT.1D0-1D-7) RETURN
+ ELSEIF(MINT(46).EQ.3) THEN
+ X(2)=MIN(1D0-1.1D-10,X(2))
+ ENDIF
+ SH=MAX(1D0,TAU*VINT(2))
+ SQM3=VINT(63)
+ SQM4=VINT(64)
+ RM3=SQM3/SH
+ RM4=SQM4/SH
+ BE34=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4))
+ RPTS=4D0*VINT(71)**2/SH
+ BE34L=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4-RPTS))
+ RM34=MAX(1D-20,2D0*RM3*RM4)
+ RSQM=1D0+RM34
+ IF(2D0*VINT(71)**2/MAX(1D0,VINT(21)*VINT(2)).LT.0.0001D0)
+ &RM34=MAX(RM34,2D0*VINT(71)**2/MAX(1D0,VINT(21)*VINT(2)))
+ RTHM=(4D0*RM3*RM4+RPTS)/(1D0-RM3-RM4+BE34L)
+ IF(ISTSB.EQ.0) THEN
+ TH=VINT(45)
+ UH=-0.5D0*SH*MAX(RTHM,1D0-RM3-RM4+BE34*CTH)
+ SQPTH=MAX(VINT(71)**2,0.25D0*SH*BE34**2*VINT(59)**2)
+ ELSE
+C...Kinematics with incoming masses tricky: now depends on how
+C...subprocess has been set up w.r.t. order of incoming partons.
+ RM1=0D0
+ IF(MINT(15).EQ.22.AND.VINT(3).LT.0D0) RM1=-VINT(3)**2/SH
+ RM2=0D0
+ IF(MINT(16).EQ.22.AND.VINT(4).LT.0D0) RM2=-VINT(4)**2/SH
+ IF(ISUB.EQ.35) THEN
+ RM2=MIN(RM1,RM2)
+ RM1=0D0
+ ENDIF
+ BE12=SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ TUCOM=(1D0-RM1-RM2)*(1D0-RM3-RM4)
+ TH=-0.5D0*SH*MAX(RTHM,TUCOM-2D0*RM1*RM4-2D0*RM2*RM3-
+ & BE12*BE34*CTH)
+ UH=-0.5D0*SH*MAX(RTHM,TUCOM-2D0*RM1*RM3-2D0*RM2*RM4+
+ & BE12*BE34*CTH)
+ SQPTH=MAX(VINT(71)**2,0.25D0*SH*BE34**2*(1D0-CTH**2))
+ ENDIF
+ SHR=SQRT(SH)
+ SH2=SH**2
+ TH2=TH**2
+ UH2=UH**2
+
+C...Choice of Q2 scale for hard process (e.g. alpha_s).
+ IF(ISTSB.EQ.1.OR.ISTSB.EQ.3.OR.ISTSB.EQ.5) THEN
+ Q2=SH
+ ELSEIF(ISTSB.EQ.8) THEN
+ IF(MINT(107).EQ.4) Q2=VINT(307)
+ IF(MINT(108).EQ.4) Q2=VINT(308)
+ ELSEIF(MOD(ISTSB,2).EQ.0.OR.ISTSB.EQ.9) THEN
+ Q2IN1=0D0
+ IF(MINT(11).EQ.22.AND.VINT(3).LT.0D0) Q2IN1=VINT(3)**2
+ Q2IN2=0D0
+ IF(MINT(12).EQ.22.AND.VINT(4).LT.0D0) Q2IN2=VINT(4)**2
+ IF(MSTP(32).EQ.1) THEN
+ Q2=2D0*SH*TH*UH/(SH**2+TH**2+UH**2)
+ ELSEIF(MSTP(32).EQ.2) THEN
+ Q2=SQPTH+0.5D0*(SQM3+SQM4)
+ ELSEIF(MSTP(32).EQ.3) THEN
+ Q2=MIN(-TH,-UH)
+ ELSEIF(MSTP(32).EQ.4) THEN
+ Q2=SH
+ ELSEIF(MSTP(32).EQ.5) THEN
+ Q2=-TH
+ ELSEIF(MSTP(32).EQ.6) THEN
+ XSF1=X(1)
+ IF(ISTSB.EQ.9) XSF1=X(1)/VINT(143)
+ XSF2=X(2)
+ IF(ISTSB.EQ.9) XSF2=X(2)/VINT(144)
+ Q2=(1D0+XSF1*Q2IN1/SH+XSF2*Q2IN2/SH)*
+ & (SQPTH+0.5D0*(SQM3+SQM4))
+ ELSEIF(MSTP(32).EQ.7) THEN
+ Q2=(1D0+Q2IN1/SH+Q2IN2/SH)*(SQPTH+0.5D0*(SQM3+SQM4))
+ ELSEIF(MSTP(32).EQ.8) THEN
+ Q2=SQPTH+0.5D0*(Q2IN1+Q2IN2+SQM3+SQM4)
+ ELSEIF(MSTP(32).EQ.9) THEN
+ Q2=SQPTH+Q2IN1+Q2IN2+SQM3+SQM4
+ ELSEIF(MSTP(32).EQ.10) THEN
+ Q2=VINT(2)
+C..Begin JA 040914
+ ELSEIF(MSTP(32).EQ.11) THEN
+ Q2=0.25*(SQM3+SQM4+2*SQRT(SQM3*SQM4))
+ ELSEIF(MSTP(32).EQ.12) THEN
+ Q2=PARP(193)
+C..End JA
+ ELSEIF(MSTP(32).EQ.13) THEN
+ Q2=SQPTH
+ ENDIF
+ IF(MINT(35).LE.2.AND.ISTSB.EQ.9) Q2=SQPTH
+ IF(ISTSB.EQ.9.AND.MSTP(82).GE.2) Q2=Q2+
+ & (PARP(82)*(VINT(1)/PARP(89))**PARP(90))**2
+ ENDIF
+
+C...Choice of Q2 scale for parton densities.
+ Q2SF=Q2
+C..Begin JA 040914
+ IF(MSTP(32).EQ.12.AND.(MOD(ISTSB,2).EQ.0.OR.ISTSB.EQ.9)
+ & .OR.MSTP(39).EQ.8.AND.(ISTSB.GE.3.AND.ISTSB.LE.5))
+ & Q2=PARP(194)
+C..End JA
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) THEN
+ Q2SF=PMAS(23,1)**2
+ IF(ISUB.EQ.8.OR.ISUB.EQ.76.OR.ISUB.EQ.77.OR.ISUB.EQ.124.OR.
+ & ISUB.EQ.174.OR.ISUB.EQ.179.OR.ISUB.EQ.351) Q2SF=PMAS(24,1)**2
+ IF(ISUB.EQ.352) Q2SF=PMAS(PYCOMP(9900024),1)**2
+ IF(ISUB.EQ.121.OR.ISUB.EQ.122.OR.ISUB.EQ.181.OR.ISUB.EQ.182.OR.
+ & ISUB.EQ.186.OR.ISUB.EQ.187.OR.ISUB.EQ.401.OR.ISUB.EQ.402) THEN
+ Q2SF=PMAS(PYCOMP(KFPR(ISUBSV,2)),1)**2
+ IF(MSTP(39).EQ.2) Q2SF=
+ & MAX(VINT(201)**2+VINT(202),VINT(206)**2+VINT(207))
+ IF(MSTP(39).EQ.3) Q2SF=SH
+ IF(MSTP(39).EQ.4) Q2SF=VINT(26)*VINT(2)
+ IF(MSTP(39).EQ.5) Q2SF=PMAS(PYCOMP(KFPR(ISUBSV,1)),1)**2
+C..Begin JA 040914
+ IF(MSTP(39).EQ.6) Q2SF=0.25*(VINT(201)+SQRT(SH))**2
+ IF(MSTP(39).EQ.7) Q2SF=
+ & (VINT(201)**2+VINT(202)+VINT(206)**2+VINT(207))/2d0
+ IF(MSTP(39).EQ.8) Q2SF=PARP(193)
+C..End JA
+ ENDIF
+ ENDIF
+ IF(MINT(35).GE.3.AND.ISTSB.EQ.9) Q2SF=SQPTH
+
+ Q2PS=Q2SF
+ Q2SF=Q2SF*PARP(34)
+ IF(MSTP(69).GE.1.AND.MINT(47).EQ.5) Q2SF=VINT(2)
+ IF(MSTP(69).GE.2) Q2SF=VINT(2)
+
+C...Identify to which class(es) subprocess belongs
+ ISMECR=0
+ ISQCD=0
+ ISJETS=0
+ IF (ISUBSV.EQ.1.OR.ISUBSV.EQ.2.OR.ISUBSV.EQ.3.OR.
+ & ISUBSV.EQ.102.OR.ISUBSV.EQ.141.OR.ISUBSV.EQ.142.OR.
+ & ISUBSV.EQ.144.OR.ISUBSV.EQ.151.OR.ISUBSV.EQ.152.OR.
+ & ISUBSV.EQ.156.OR.ISUBSV.EQ.157) ISMECR=1
+ IF (ISUBSV.EQ.11.OR.ISUBSV.EQ.12.OR.ISUBSV.EQ.13.OR.
+ & ISUBSV.EQ.28.OR.ISUBSV.EQ.53.OR.ISUBSV.EQ.68) ISQCD=1
+ IF ((ISUBSV.EQ.81.OR.ISUBSV.EQ.82).AND.MINT(55).LE.5) ISQCD=1
+ IF (ISUBSV.GE.381.AND.ISUBSV.LE.386) ISQCD=1
+ IF ((ISUBSV.EQ.387.OR.ISUBSV.EQ.388).AND.MINT(55).LE.5) ISQCD=1
+ IF (ISTSB.EQ.9) ISQCD=1
+ IF ((ISUBSV.GE.86.AND.ISUBSV.LE.89).OR.ISUBSV.EQ.107.OR.
+ & (ISUBSV.GE.14.AND.ISUBSV.LE.16).OR.(ISUBSV.GE.29.AND.
+ & ISUBSV.LE.32).OR.(ISUBSV.GE.111.AND.ISUBSV.LE.113).OR.
+ & ISUBSV.EQ.115.OR.(ISUBSV.GE.183.AND.ISUBSV.LE.185).OR.
+ & (ISUBSV.GE.188.AND.ISUBSV.LE.190).OR.ISUBSV.EQ.161.OR.
+ & ISUBSV.EQ.167.OR.ISUBSV.EQ.168.OR.(ISUBSV.GE.393.AND.
+ & ISUBSV.LE.395).OR.(ISUBSV.GE.421.AND.ISUBSV.LE.439).OR.
+ & (ISUBSV.GE.461.AND.ISUBSV.LE.479)) ISJETS=1
+C...WBF is special case of ISJETS
+ IF (ISUBSV.EQ.5.OR.ISUBSV.EQ.8.OR.
+ & (ISUBSV.GE.71.AND.ISUBSV.LE.73).OR.
+ & ISUBSV.EQ.76.OR.ISUBSV.EQ.77.OR.
+ & (ISUBSV.GE.121.AND.ISUBSV.LE.124).OR.
+ & ISUBSV.EQ.173.OR.ISUBSV.EQ.174.OR.
+ & ISUBSV.EQ.178.OR.ISUBSV.EQ.179.OR.
+ & ISUBSV.EQ.181.OR.ISUBSV.EQ.182.OR.
+ & ISUBSV.EQ.186.OR.ISUBSV.EQ.187.OR.
+ & ISUBSV.EQ.351.OR.ISUBSV.EQ.352) ISJETS=2
+C...Some processes with photons also belong here.
+ IF (ISUBSV.EQ.10.OR.(ISUBSV.GE.18.AND.ISUBSV.LE.20).OR.
+ & (ISUBSV.GE.33.AND.ISUBSV.LE.36).OR.ISUBSV.EQ.54.OR.
+ & ISUBSV.EQ.58.OR.ISUBSV.EQ.69.OR.ISUBSV.EQ.70.OR.
+ & ISUBSV.EQ.80.OR.(ISUBSV.GE.83.AND.ISUBSV.LE.85).OR.
+ & (ISUBSV.GE.106.AND.ISUBSV.LE.110).OR.ISUBSV.EQ.114.OR.
+ & (ISUBSV.GE.131.AND.ISUBSV.LE.140)) ISJETS=3
+
+C...Choice of Q2 scale for parton-shower activity.
+ IF(MSTP(22).GE.1.AND.(ISUB.EQ.10.OR.ISUB.EQ.83).AND.
+ &(MINT(43).EQ.2.OR.MINT(43).EQ.3)) THEN
+ XBJ=X(2)
+ IF(MINT(43).EQ.3) XBJ=X(1)
+ IF(MSTP(22).EQ.1) THEN
+ Q2PS=-TH
+ ELSEIF(MSTP(22).EQ.2) THEN
+ Q2PS=((1D0-XBJ)/XBJ)*(-TH)
+ ELSEIF(MSTP(22).EQ.3) THEN
+ Q2PS=SQRT((1D0-XBJ)/XBJ)*(-TH)
+ ELSE
+ Q2PS=(1D0-XBJ)*MAX(1D0,-LOG(XBJ))*(-TH)
+ ENDIF
+ ENDIF
+C...For multiple interactions, start from scale defined above
+C...For all other QCD or "+jets"-type events, start shower from pThard.
+ IF (ISJETS.EQ.1.OR.ISQCD.EQ.1.AND.ISTSB.NE.9) Q2PS=SQPTH
+ IF((MSTP(68).EQ.1.OR.MSTP(68).EQ.3).AND.ISMECR.EQ.1) THEN
+C...Max shower scale = s for ME corrected processes.
+C...(pT-ordering: max pT2 is s/4)
+ Q2PS=VINT(2)
+ IF (MINT(35).GE.3) Q2PS=Q2PS*0.25D0
+ ELSEIF(MSTP(68).GE.2.AND.ISQCD.EQ.0.AND.ISJETS.EQ.0) THEN
+C...Max shower scale = s for all non-QCD, non-"+ jet" type processes.
+C...(pT-ordering: max pT2 is s/4)
+ Q2PS=VINT(2)
+ IF (MINT(35).GE.3) Q2PS=Q2PS*0.25D0
+ ENDIF
+ IF(MINT(35).EQ.2.AND.ISTSB.EQ.9) Q2PS=SQPTH
+
+C...Elastic and diffractive events not associated with scales so set 0.
+ IF(ISUBSV.GE.91.AND.ISUBSV.LE.94) THEN
+ Q2SF=0D0
+ Q2PS=0D0
+ ENDIF
+
+C...Store derived kinematical quantities
+ VINT(41)=X(1)
+ VINT(42)=X(2)
+ VINT(44)=SH
+ VINT(43)=SQRT(SH)
+ VINT(45)=TH
+ VINT(46)=UH
+ IF(ISTSB.NE.8) VINT(48)=SQPTH
+ IF(ISTSB.NE.8) VINT(47)=SQRT(SQPTH)
+ VINT(50)=TAUP*VINT(2)
+ VINT(49)=SQRT(MAX(0D0,VINT(50)))
+ VINT(52)=Q2
+ VINT(51)=SQRT(Q2)
+ VINT(54)=Q2SF
+ VINT(53)=SQRT(Q2SF)
+ VINT(56)=Q2PS
+ VINT(55)=SQRT(Q2PS)
+
+C...Set starting scale for multiple interactions
+ IF (ISUBSV.EQ.95) THEN
+ XT2GMX=0D0
+ ELSEIF(MSTP(86).EQ.3.OR.(MSTP(86).EQ.2.AND.ISUBSV.NE.11.AND.
+ & ISUBSV.NE.12.AND.ISUBSV.NE.13.AND.ISUBSV.NE.28.AND.
+ & ISUBSV.NE.53.AND.ISUBSV.NE.68.AND.ISUBSV.NE.95.AND.
+ & ISUBSV.NE.96)) THEN
+C...All accessible phase space allowed.
+ XT2GMX=(1D0-VINT(41))*(1D0-VINT(42))
+ ELSE
+C...Scale of hard process sets limit.
+C...2 -> 1. Limit is tau = x1*x2.
+C...2 -> 2. Limit is XT2 for hard process + FS masses.
+C...2 -> n > 2. Limit is tau' = tau of outer process.
+ XT2GMX=VINT(25)
+ IF(ISTSB.EQ.1) XT2GMX=VINT(21)
+ IF(ISTSB.EQ.2)
+ & XT2GMX=(4D0*VINT(48)+2D0*VINT(63)+2D0*VINT(64))/VINT(2)
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) XT2GMX=VINT(26)
+ ENDIF
+ VINT(62)=0.25D0*XT2GMX*VINT(2)
+ VINT(61)=SQRT(MAX(0D0,VINT(62)))
+
+C...Calculate parton distributions
+ IF(ISTSB.LE.0) GOTO 160
+ IF(MINT(47).GE.2) THEN
+ DO 110 I=3-MIN(2,MINT(45)),MIN(2,MINT(46))
+ XSF=X(I)
+ IF(ISTSB.EQ.9) XSF=X(I)/VINT(142+I)
+ IF(ISUB.EQ.99) THEN
+ IF(MINT(140+I).EQ.0) THEN
+ XSF=VINT(309-I)/(VINT(2)+VINT(309-I)-VINT(I+2)**2)
+ ELSE
+ XSF=VINT(309-I)/(VINT(2)+VINT(307)+VINT(308))
+ ENDIF
+ VINT(40+I)=XSF
+ Q2SF=VINT(309-I)
+ ENDIF
+ MINT(105)=MINT(102+I)
+ MINT(109)=MINT(106+I)
+ VINT(120)=VINT(2+I)
+C.... ALICE
+C.... Store side in MINT(124)
+ MINT(124)=I
+C....
+ IF(MSTP(57).LE.1) THEN
+ CALL PYPDFU(MINT(10+I),XSF,Q2SF,XPQ)
+ ELSE
+ CALL PYPDFL(MINT(10+I),XSF,Q2SF,XPQ)
+ ENDIF
+C...Safety margin against heavy flavour very close to threshold,
+C...e.g. caused by mismatch in c and b masses.
+ IF(Q2SF.LT.1.1*PMAS(4,1)**2) THEN
+ XPQ(4)=0D0
+ XPQ(-4)=0D0
+ ENDIF
+ IF(Q2SF.LT.1.1*PMAS(5,1)**2) THEN
+ XPQ(5)=0D0
+ XPQ(-5)=0D0
+ ENDIF
+ DO 100 KFL=-25,25
+ XSFX(I,KFL)=XPQ(KFL)
+ 100 CONTINUE
+ 110 CONTINUE
+ ENDIF
+
+C...Calculate alpha_em, alpha_strong and K-factor
+ XW=PARU(102)
+ XWV=XW
+ IF(MSTP(8).GE.2.OR.(ISUB.GE.71.AND.ISUB.LE.77)) XW=
+ &1D0-(PMAS(24,1)/PMAS(23,1))**2
+ XW1=1D0-XW
+ XWC=1D0/(16D0*XW*XW1)
+ AEM=PYALEM(Q2)
+ IF(MSTP(8).GE.1) AEM=SQRT(2D0)*PARU(105)*PMAS(24,1)**2*XW/PARU(1)
+ IF(MSTP(33).NE.3) AS=PYALPS(PARP(34)*Q2)
+ FACK=1D0
+ FACA=1D0
+ IF(MSTP(33).EQ.1) THEN
+ FACK=PARP(31)
+ ELSEIF(MSTP(33).EQ.2) THEN
+ FACK=PARP(31)
+ FACA=PARP(32)/PARP(31)
+ ELSEIF(MSTP(33).EQ.3) THEN
+ Q2AS=PARP(33)*Q2
+ IF(ISTSB.EQ.9.AND.MSTP(82).GE.2) Q2AS=Q2AS+
+ & PARU(112)*PARP(82)*(VINT(1)/PARP(89))**PARP(90)
+ AS=PYALPS(Q2AS)
+ ENDIF
+ VINT(138)=1D0
+ VINT(57)=AEM
+ VINT(58)=AS
+
+C...Set flags for allowed reacting partons/leptons
+ DO 140 I=1,2
+ DO 120 J=-25,25
+ KFAC(I,J)=0
+ 120 CONTINUE
+ IF(MINT(44+I).EQ.1) THEN
+ KFAC(I,MINT(10+I))=1
+ ELSEIF(MINT(40+I).EQ.1.AND.MSTP(12).EQ.0) THEN
+ KFAC(I,MINT(10+I))=1
+ KFAC(I,22)=1
+ KFAC(I,24)=1
+ KFAC(I,-24)=1
+ ELSE
+ DO 130 J=-25,25
+ KFAC(I,J)=KFIN(I,J)
+ IF(IABS(J).GT.MSTP(58).AND.IABS(J).LE.10) KFAC(I,J)=0
+ IF(XSFX(I,J).LT.1D-10) KFAC(I,J)=0
+ 130 CONTINUE
+ ENDIF
+ 140 CONTINUE
+
+C...Lower and upper limit for fermion flavour loops
+ MMIN1=0
+ MMAX1=0
+ MMIN2=0
+ MMAX2=0
+ DO 150 J=-20,20
+ IF(KFAC(1,-J).EQ.1) MMIN1=-J
+ IF(KFAC(1,J).EQ.1) MMAX1=J
+ IF(KFAC(2,-J).EQ.1) MMIN2=-J
+ IF(KFAC(2,J).EQ.1) MMAX2=J
+ 150 CONTINUE
+ MMINA=MIN(MMIN1,MMIN2)
+ MMAXA=MAX(MMAX1,MMAX2)
+
+C...Common resonance mass and width combinations
+ SQMZ=PMAS(23,1)**2
+ SQMW=PMAS(24,1)**2
+ GMMZ=PMAS(23,1)*PMAS(23,2)
+ GMMW=PMAS(24,1)*PMAS(24,2)
+
+C...Polarization factors...implemented so far for W+W-(25)
+ POLR=(1D0+PARJ(132))*(1D0-PARJ(131))
+ POLL=(1D0-PARJ(132))*(1D0+PARJ(131))
+ POLRR=(1D0+PARJ(132))*(1D0+PARJ(131))
+ POLLL=(1D0-PARJ(132))*(1D0-PARJ(131))
+
+C...Phase space integral in tau
+ COMFAC=PARU(1)*PARU(5)/VINT(2)
+ IF(MINT(41).EQ.2.AND.MINT(42).EQ.2) COMFAC=COMFAC*FACK
+ IF((MINT(47).GE.2.OR.(ISTSB.GE.3.AND.ISTSB.LE.5)).AND.
+ &ISTSB.NE.8.AND.ISTSB.NE.9) THEN
+ ATAU1=LOG(TAUMAX/TAUMIN)
+ ATAU2=(TAUMAX-TAUMIN)/(TAUMAX*TAUMIN)
+ H1=COEF(ISUBSV,1)+(ATAU1/ATAU2)*COEF(ISUBSV,2)/TAU
+ IF(MINT(72).GE.1) THEN
+ TAUR1=VINT(73)
+ GAMR1=VINT(74)
+ ATAUD=LOG(TAUMAX/TAUMIN*(TAUMIN+TAUR1)/(TAUMAX+TAUR1))
+ ATAU3=ATAUD/TAUR1
+ IF(ATAUD.GT.1D-10) H1=H1+
+ & (ATAU1/ATAU3)*COEF(ISUBSV,3)/(TAU+TAUR1)
+ ATAUD=ATAN((TAUMAX-TAUR1)/GAMR1)-ATAN((TAUMIN-TAUR1)/GAMR1)
+ ATAU4=ATAUD/GAMR1
+ IF(ATAUD.GT.1D-10) H1=H1+
+ & (ATAU1/ATAU4)*COEF(ISUBSV,4)*TAU/((TAU-TAUR1)**2+GAMR1**2)
+ ENDIF
+ IF(MINT(72).GE.2) THEN
+ TAUR2=VINT(75)
+ GAMR2=VINT(76)
+ ATAUD=LOG(TAUMAX/TAUMIN*(TAUMIN+TAUR2)/(TAUMAX+TAUR2))
+ ATAU5=ATAUD/TAUR2
+ IF(ATAUD.GT.1D-10) H1=H1+
+ & (ATAU1/ATAU5)*COEF(ISUBSV,5)/(TAU+TAUR2)
+ ATAUD=ATAN((TAUMAX-TAUR2)/GAMR2)-ATAN((TAUMIN-TAUR2)/GAMR2)
+ ATAU6=ATAUD/GAMR2
+ IF(ATAUD.GT.1D-10) H1=H1+
+ & (ATAU1/ATAU6)*COEF(ISUBSV,6)*TAU/((TAU-TAUR2)**2+GAMR2**2)
+ ENDIF
+ IF(MINT(72).EQ.3) THEN
+ TAUR3=VINT(77)
+ GAMR3=VINT(78)
+ ATAUD=LOG(TAUMAX/TAUMIN*(TAUMIN+TAUR3)/(TAUMAX+TAUR3))
+ ATAU50=ATAUD/TAUR3
+ IF(ATAUD.GT.1D-10) H1=H1+
+ & (ATAU1/ATAU50)*COEFX(ISUBSV,1)/(TAU+TAUR3)
+ ATAUD=ATAN((TAUMAX-TAUR3)/GAMR3)-ATAN((TAUMIN-TAUR3)/GAMR3)
+ ATAU60=ATAUD/GAMR3
+ IF(ATAUD.GT.1D-10) H1=H1+
+ & (ATAU1/ATAU60)*COEFX(ISUBSV,2)*TAU/((TAU-TAUR3)**2+GAMR3**2)
+ ENDIF
+ IF(MINT(47).EQ.5.AND.(ISTSB.LE.2.OR.ISTSB.GE.5)) THEN
+ ATAU7=LOG(MAX(2D-10,1D0-TAUMIN)/MAX(2D-10,1D0-TAUMAX))
+ IF(ATAU7.GT.1D-10) H1=H1+(ATAU1/ATAU7)*COEF(ISUBSV,7)*TAU/
+ & MAX(2D-10,1D0-TAU)
+ ELSEIF(MINT(47).GE.6.AND.(ISTSB.LE.2.OR.ISTSB.GE.5)) THEN
+ ATAU7=LOG(MAX(1D-10,1D0-TAUMIN)/MAX(1D-10,1D0-TAUMAX))
+ IF(ATAU7.GT.1D-10) H1=H1+(ATAU1/ATAU7)*COEF(ISUBSV,7)*TAU/
+ & MAX(1D-10,1D0-TAU)
+ ENDIF
+ COMFAC=COMFAC*ATAU1/(TAU*H1)
+ ENDIF
+
+C...Phase space integral in y*
+ IF((MINT(47).EQ.4.OR.MINT(47).EQ.5).AND.ISTSB.NE.8.AND.ISTSB.NE.9)
+ &THEN
+ AYST0=YSTMAX-YSTMIN
+ IF(AYST0.LT.1D-10) THEN
+ COMFAC=0D0
+ ELSE
+ AYST1=0.5D0*(YSTMAX-YSTMIN)**2
+ AYST2=AYST1
+ AYST3=2D0*(ATAN(EXP(YSTMAX))-ATAN(EXP(YSTMIN)))
+ H2=(AYST0/AYST1)*COEF(ISUBSV,8)*(YST-YSTMIN)+
+ & (AYST0/AYST2)*COEF(ISUBSV,9)*(YSTMAX-YST)+
+ & (AYST0/AYST3)*COEF(ISUBSV,10)/COSH(YST)
+ IF(MINT(45).EQ.3) THEN
+ YST0=-0.5D0*LOG(TAUE)
+ AYST4=LOG(MAX(1D-10,EXP(YST0-YSTMIN)-1D0)/
+ & MAX(1D-10,EXP(YST0-YSTMAX)-1D0))
+ IF(AYST4.GT.1D-10) H2=H2+(AYST0/AYST4)*COEF(ISUBSV,11)/
+ & MAX(1D-10,1D0-EXP(YST-YST0))
+ ENDIF
+ IF(MINT(46).EQ.3) THEN
+ YST0=-0.5D0*LOG(TAUE)
+ AYST5=LOG(MAX(1D-10,EXP(YST0+YSTMAX)-1D0)/
+ & MAX(1D-10,EXP(YST0+YSTMIN)-1D0))
+ IF(AYST5.GT.1D-10) H2=H2+(AYST0/AYST5)*COEF(ISUBSV,12)/
+ & MAX(1D-10,1D0-EXP(-YST-YST0))
+ ENDIF
+ COMFAC=COMFAC*AYST0/H2
+ ENDIF
+ ENDIF
+
+C...2 -> 1 processes: reduction in angular part of phase space integral
+C...for case of decaying resonance
+ ACTH0=CTNMAX-CTNMIN+CTPMAX-CTPMIN
+ IF((ISTSB.EQ.1.OR.ISTSB.EQ.3.OR.ISTSB.EQ.5)) THEN
+ IF(MDCY(PYCOMP(KFPR(ISUBSV,1)),1).EQ.1) THEN
+ IF(KFPR(ISUB,1).EQ.25.OR.KFPR(ISUB,1).EQ.37.OR.
+ & KFPR(ISUB,1).EQ.39) THEN
+ COMFAC=COMFAC*0.5D0*ACTH0
+ ELSE
+ COMFAC=COMFAC*0.125D0*(3D0*ACTH0+CTNMAX**3-CTNMIN**3+
+ & CTPMAX**3-CTPMIN**3)
+ ENDIF
+ ENDIF
+
+C...2 -> 2 processes: angular part of phase space integral
+ ELSEIF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
+ ACTH1=LOG((MAX(RM34,RSQM-CTNMIN)*MAX(RM34,RSQM-CTPMIN))/
+ & (MAX(RM34,RSQM-CTNMAX)*MAX(RM34,RSQM-CTPMAX)))
+ ACTH2=LOG((MAX(RM34,RSQM+CTNMAX)*MAX(RM34,RSQM+CTPMAX))/
+ & (MAX(RM34,RSQM+CTNMIN)*MAX(RM34,RSQM+CTPMIN)))
+ ACTH3=1D0/MAX(RM34,RSQM-CTNMAX)-1D0/MAX(RM34,RSQM-CTNMIN)+
+ & 1D0/MAX(RM34,RSQM-CTPMAX)-1D0/MAX(RM34,RSQM-CTPMIN)
+ ACTH4=1D0/MAX(RM34,RSQM+CTNMIN)-1D0/MAX(RM34,RSQM+CTNMAX)+
+ & 1D0/MAX(RM34,RSQM+CTPMIN)-1D0/MAX(RM34,RSQM+CTPMAX)
+ H3=COEF(ISUBSV,13)+
+ & (ACTH0/ACTH1)*COEF(ISUBSV,14)/MAX(RM34,RSQM-CTH)+
+ & (ACTH0/ACTH2)*COEF(ISUBSV,15)/MAX(RM34,RSQM+CTH)+
+ & (ACTH0/ACTH3)*COEF(ISUBSV,16)/MAX(RM34,RSQM-CTH)**2+
+ & (ACTH0/ACTH4)*COEF(ISUBSV,17)/MAX(RM34,RSQM+CTH)**2
+ COMFAC=COMFAC*ACTH0*0.5D0*BE34/H3
+
+C...2 -> 2 processes: take into account final state Breit-Wigners
+ COMFAC=COMFAC*VINT(80)
+ ENDIF
+
+C...2 -> 3, 4 processes: phace space integral in tau'
+ IF(MINT(47).GE.2.AND.ISTSB.GE.3.AND.ISTSB.LE.5) THEN
+ ATAUP1=LOG(TAUPMX/TAUPMN)
+ ATAUP2=((1D0-TAU/TAUPMX)**4-(1D0-TAU/TAUPMN)**4)/(4D0*TAU)
+ H4=COEF(ISUBSV,18)+
+ & (ATAUP1/ATAUP2)*COEF(ISUBSV,19)*(1D0-TAU/TAUP)**3/TAUP
+ IF(MINT(47).EQ.5) THEN
+ ATAUP3=LOG(MAX(2D-10,1D0-TAUPMN)/MAX(2D-10,1D0-TAUPMX))
+ H4=H4+(ATAUP1/ATAUP3)*COEF(ISUBSV,20)*TAUP/MAX(2D-10,1D0-TAUP)
+ ELSEIF(MINT(47).GE.6) THEN
+ ATAUP3=LOG(MAX(1D-10,1D0-TAUPMN)/MAX(1D-10,1D0-TAUPMX))
+ H4=H4+(ATAUP1/ATAUP3)*COEF(ISUBSV,20)*TAUP/MAX(1D-10,1D0-TAUP)
+ ENDIF
+ COMFAC=COMFAC*ATAUP1/H4
+ ENDIF
+
+C...2 -> 3, 4 processes: effective W/Z parton distributions
+ IF(ISTSB.EQ.3.OR.ISTSB.EQ.4) THEN
+ IF(1D0-TAU/TAUP.GT.1D-4) THEN
+ FZW=(1D0+TAU/TAUP)*LOG(TAUP/TAU)-2D0*(1D0-TAU/TAUP)
+ ELSE
+ FZW=1D0/6D0*(1D0-TAU/TAUP)**3*TAU/TAUP
+ ENDIF
+ COMFAC=COMFAC*FZW
+ ENDIF
+
+C...2 -> 3 processes: phase space integrals for pT1, pT2, y3, mirror
+ IF(ISTSB.EQ.5) THEN
+ COMFAC=COMFAC*VINT(205)*VINT(210)*VINT(212)*VINT(214)/
+ & (128D0*PARU(1)**4*VINT(220))*(TAU**2/TAUP)
+ ENDIF
+
+C...Phase space integral for low-pT and multiple interactions
+ IF(ISTSB.EQ.9) THEN
+ COMFAC=PARU(1)*PARU(5)*FACK*0.5D0*VINT(2)/SH2
+ ATAU1=LOG(2D0*(1D0+SQRT(1D0-XT2))/XT2-1D0)
+ ATAU2=2D0*ATAN(1D0/XT2-1D0)/SQRT(XT2)
+ H1=COEF(ISUBSV,1)+(ATAU1/ATAU2)*COEF(ISUBSV,2)/SQRT(TAU)
+ COMFAC=COMFAC*ATAU1/H1
+ AYST0=YSTMAX-YSTMIN
+ AYST1=0.5D0*(YSTMAX-YSTMIN)**2
+ AYST3=2D0*(ATAN(EXP(YSTMAX))-ATAN(EXP(YSTMIN)))
+ H2=(AYST0/AYST1)*COEF(ISUBSV,8)*(YST-YSTMIN)+
+ & (AYST0/AYST1)*COEF(ISUBSV,9)*(YSTMAX-YST)+
+ & (AYST0/AYST3)*COEF(ISUBSV,10)/COSH(YST)
+ COMFAC=COMFAC*AYST0/H2
+ IF(MSTP(82).LE.1) COMFAC=COMFAC*XT2**2*(1D0/VINT(149)-1D0)
+C...For MSTP(82)>=2 an additional factor (xT2/(xT2+VINT(149))**2 is
+C...introduced to make cross-section finite for xT2 -> 0
+ IF(MSTP(82).GE.2) COMFAC=COMFAC*XT2**2/(VINT(149)*
+ & (1D0+VINT(149)))
+ ENDIF
+
+C...Real gamma + gamma: include factor 2 when different nature
+ 160 IF(MINT(11).EQ.22.AND.MINT(12).EQ.22.AND.MINT(123).GE.4.AND.
+ &MSTP(14).LE.10) COMFAC=2D0*COMFAC
+
+C...Extra factors to include the effects of
+C...longitudinal resolved photons (but not direct or DIS ones).
+ DO 170 ISDE=1,2
+ IF(MINT(10+ISDE).EQ.22.AND.MINT(106+ISDE).GE.1.AND.
+ & MINT(106+ISDE).LE.3) THEN
+ VINT(314+ISDE)=1D0
+ XY=PARP(166+ISDE)
+ IF(MSTP(16).EQ.0) THEN
+ IF(VINT(304+ISDE).GT.0D0.AND.VINT(304+ISDE).LT.1D0)
+ & XY=VINT(304+ISDE)
+ ELSE
+ IF(VINT(308+ISDE).GT.0D0.AND.VINT(308+ISDE).LT.1D0)
+ & XY=VINT(308+ISDE)
+ ENDIF
+ Q2GA=VINT(306+ISDE)
+ IF(MSTP(17).GT.0.AND.XY.GT.0D0.AND.XY.LT.1D0.AND.
+ & Q2GA.GT.0D0) THEN
+ REDUCE=0D0
+ IF(MSTP(17).EQ.1) THEN
+ REDUCE=4D0*Q2*Q2GA/(Q2+Q2GA)**2
+ ELSEIF(MSTP(17).EQ.2) THEN
+ REDUCE=4D0*Q2GA/(Q2+Q2GA)
+ ELSEIF(MSTP(17).EQ.3) THEN
+ PMVIRT=PMAS(PYCOMP(113),1)
+ REDUCE=4D0*Q2GA/(PMVIRT**2+Q2GA)
+ ELSEIF(MSTP(17).EQ.4.AND.MINT(106+ISDE).EQ.1) THEN
+ PMVIRT=PMAS(PYCOMP(113),1)
+ REDUCE=4D0*PMVIRT**2*Q2GA/(PMVIRT**2+Q2GA)**2
+ ELSEIF(MSTP(17).EQ.4.AND.MINT(106+ISDE).EQ.2) THEN
+ PMVIRT=PMAS(PYCOMP(113),1)
+ REDUCE=4D0*PMVIRT**2*Q2GA/(PMVIRT**2+Q2GA)**2
+ ELSEIF(MSTP(17).EQ.4.AND.MINT(106+ISDE).EQ.3) THEN
+ PMVSMN=4D0*PARP(15)**2
+ PMVSMX=4D0*VINT(154)**2
+ REDTRA=1D0/(PMVSMN+Q2GA)-1D0/(PMVSMX+Q2GA)
+ REDLON=(3D0*PMVSMN+Q2GA)/(PMVSMN+Q2GA)**3-
+ & (3D0*PMVSMX+Q2GA)/(PMVSMX+Q2GA)**3
+ REDUCE=4D0*(Q2GA/6D0)*REDLON/REDTRA
+ ELSEIF(MSTP(17).EQ.5.AND.MINT(106+ISDE).EQ.1) THEN
+ PMVIRT=PMAS(PYCOMP(113),1)
+ REDUCE=4D0*Q2GA/(PMVIRT**2+Q2GA)
+ ELSEIF(MSTP(17).EQ.5.AND.MINT(106+ISDE).EQ.2) THEN
+ PMVIRT=PMAS(PYCOMP(113),1)
+ REDUCE=4D0*Q2GA/(PMVIRT**2+Q2GA)
+ ELSEIF(MSTP(17).EQ.5.AND.MINT(106+ISDE).EQ.3) THEN
+ PMVSMN=4D0*PARP(15)**2
+ PMVSMX=4D0*VINT(154)**2
+ REDTRA=1D0/(PMVSMN+Q2GA)-1D0/(PMVSMX+Q2GA)
+ REDLON=1D0/(PMVSMN+Q2GA)**2-1D0/(PMVSMX+Q2GA)**2
+ REDUCE=4D0*(Q2GA/2D0)*REDLON/REDTRA
+ ENDIF
+ BEAMAS=PYMASS(11)
+ IF(VINT(302+ISDE).GT.0D0) BEAMAS=VINT(302+ISDE)
+ FRACLT=1D0/(1D0+XY**2/2D0/(1D0-XY)*
+ & (1D0-2D0*BEAMAS**2/Q2GA))
+ VINT(314+ISDE)=1D0+PARP(165)*REDUCE*FRACLT
+ ENDIF
+ ELSE
+ VINT(314+ISDE)=1D0
+ ENDIF
+ COMFAC=COMFAC*VINT(314+ISDE)
+ 170 CONTINUE
+
+C...Evaluate cross sections - done in separate routines by kind
+C...of physics, to keep PYSIGH of sensible size.
+ IF(MAP.EQ.1) THEN
+C...Standard QCD (including photons).
+ CALL PYSGQC(NCHN,SIGS)
+ ELSEIF(MAP.EQ.2) THEN
+C...Heavy flavours.
+ CALL PYSGHF(NCHN,SIGS)
+ ELSEIF(MAP.EQ.3) THEN
+C...W/Z.
+ CALL PYSGWZ(NCHN,SIGS)
+ ELSEIF(MAP.EQ.4) THEN
+C...Higgs (2 doublets; including longitudinal W/Z scattering).
+ CALL PYSGHG(NCHN,SIGS)
+ ELSEIF(MAP.EQ.5) THEN
+C...SUSY.
+ CALL PYSGSU(NCHN,SIGS)
+ ELSEIF(MAP.EQ.6) THEN
+C...Technicolor.
+ CALL PYSGTC(NCHN,SIGS)
+ ELSEIF(MAP.EQ.7) THEN
+C...Exotics (Z'/W'/LQ/R/f*/H++/Z_R/W_R/G*).
+ CALL PYSGEX(NCHN,SIGS)
+ ENDIF
+
+C...Multiply with parton distributions
+ IF(ISUB.LE.90.OR.ISUB.GE.96) THEN
+ DO 180 ICHN=1,NCHN
+ IF(MINT(45).GE.2) THEN
+ KFL1=ISIG(ICHN,1)
+ SIGH(ICHN)=SIGH(ICHN)*XSFX(1,KFL1)
+ ENDIF
+ IF(MINT(46).GE.2) THEN
+ KFL2=ISIG(ICHN,2)
+ SIGH(ICHN)=SIGH(ICHN)*XSFX(2,KFL2)
+ ENDIF
+ SIGS=SIGS+SIGH(ICHN)
+ 180 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSGQC
+C...Subprocess cross sections for QCD processes,
+C...including photons.
+C...Auxiliary to PYSIGH.
+
+ SUBROUTINE PYSGQC(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYPARS/,/PYINT1/,/PYINT2/,
+ &/PYINT3/,/PYINT4/,/PYINT7/,/PYSGCM/
+C...Local arrays
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5)
+
+C...Differential cross section expressions.
+
+ IF(ISUB.LE.20) THEN
+ IF(ISUB.EQ.10) THEN
+C...f + f' -> f + f' (gamma/Z/W exchange)
+ FACGGF=COMFAC*AEM**2*2D0*(SH2+UH2)/TH2
+ FACGZF=COMFAC*AEM**2*XWC*4D0*SH2/(TH*(TH-SQMZ))
+ FACZZF=COMFAC*(AEM*XWC)**2*2D0*SH2/(TH-SQMZ)**2
+ FACWWF=COMFAC*(0.5D0*AEM/XW)**2*SH2/(TH-SQMW)**2
+ DO 110 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 110
+ IA=IABS(I)
+ DO 100 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 100
+ JA=IABS(J)
+C...Electroweak couplings
+ EI=KCHG(IA,1)*ISIGN(1,I)/3D0
+ AI=SIGN(1D0,KCHG(IA,1)+0.5D0)*ISIGN(1,I)
+ VI=AI-4D0*EI*XWV
+ EJ=KCHG(JA,1)*ISIGN(1,J)/3D0
+ AJ=SIGN(1D0,KCHG(JA,1)+0.5D0)*ISIGN(1,J)
+ VJ=AJ-4D0*EJ*XWV
+ EPSIJ=ISIGN(1,I*J)
+C...gamma/Z exchange, only gamma exchange, or only Z exchange
+ IF(MSTP(21).GE.1.AND.MSTP(21).LE.4) THEN
+ IF(MSTP(21).EQ.1.OR.MSTP(21).EQ.4) THEN
+ FACNCF=FACGGF*EI**2*EJ**2+FACGZF*EI*EJ*
+ & (VI*VJ*(1D0+UH2/SH2)+AI*AJ*EPSIJ*(1D0-UH2/SH2))+
+ & FACZZF*((VI**2+AI**2)*(VJ**2+AJ**2)*(1D0+UH2/SH2)+
+ & 4D0*VI*VJ*AI*AJ*EPSIJ*(1D0-UH2/SH2))
+ ELSEIF(MSTP(21).EQ.2) THEN
+ FACNCF=FACGGF*EI**2*EJ**2
+ ELSE
+ FACNCF=FACZZF*((VI**2+AI**2)*(VJ**2+AJ**2)*
+ & (1D0+UH2/SH2)+4D0*VI*VJ*AI*AJ*EPSIJ*(1D0-UH2/SH2))
+ ENDIF
+C...Extrafactor 2 for only one incoming neutrino spin state.
+ IF(IA.GT.10.AND.MOD(IA,2).EQ.0) FACNCF=2D0*FACNCF
+ IF(JA.GT.10.AND.MOD(JA,2).EQ.0) FACNCF=2D0*FACNCF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACNCF
+ ENDIF
+C...W exchange
+ IF((MSTP(21).EQ.1.OR.MSTP(21).EQ.5).AND.AI*AJ.LT.0D0) THEN
+ FACCCF=FACWWF*VINT(180+I)*VINT(180+J)
+ IF(EPSIJ.LT.0D0) FACCCF=FACCCF*UH2/SH2
+ IF(IA.GT.10.AND.MOD(IA,2).EQ.0) FACCCF=2D0*FACCCF
+ IF(JA.GT.10.AND.MOD(JA,2).EQ.0) FACCCF=2D0*FACCCF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACCCF
+ ENDIF
+ 100 CONTINUE
+ 110 CONTINUE
+
+ ELSEIF(ISUB.EQ.11) THEN
+C...f + f' -> f + f' (g exchange)
+ FACQQ1=COMFAC*AS**2*4D0/9D0*(SH2+UH2)/TH2
+ FACQQB=COMFAC*AS**2*4D0/9D0*((SH2+UH2)/TH2*FACA-
+ & MSTP(34)*2D0/3D0*UH2/(SH*TH))
+ FACQQ2=COMFAC*AS**2*4D0/9D0*((SH2+TH2)/UH2-
+ & MSTP(34)*2D0/3D0*SH2/(TH*UH))
+ DO 130 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.MSTP(58).OR.KFAC(1,I).EQ.0) GOTO 130
+ DO 120 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.MSTP(58).OR.KFAC(2,J).EQ.0) GOTO 120
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1
+ IF(I.EQ.-J) SIGH(NCHN)=FACQQB
+ IF(I.EQ.J) THEN
+ SIGH(NCHN)=0.5D0*SIGH(NCHN)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=0.5D0*FACQQ2
+ ENDIF
+ 120 CONTINUE
+ 130 CONTINUE
+
+ ELSEIF(ISUB.EQ.12) THEN
+C...f + fbar -> f' + fbar' (q + qbar -> q' + qbar' only)
+ CALL PYWIDT(21,SH,WDTP,WDTE)
+ FACQQB=COMFAC*AS**2*4D0/9D0*(TH2+UH2)/SH2*
+ & (WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ DO 140 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 140
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQB
+ 140 CONTINUE
+
+ ELSEIF(ISUB.EQ.13) THEN
+C...f + fbar -> g + g (q + qbar -> g + g only)
+ FACGG1=COMFAC*AS**2*32D0/27D0*(UH/TH-(2D0+MSTP(34)*1D0/4D0)*
+ & UH2/SH2)
+ FACGG2=COMFAC*AS**2*32D0/27D0*(TH/UH-(2D0+MSTP(34)*1D0/4D0)*
+ & TH2/SH2)
+ DO 150 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 150
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACGG1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=0.5D0*FACGG2
+ 150 CONTINUE
+
+ ELSEIF(ISUB.EQ.14) THEN
+C...f + fbar -> g + gamma (q + qbar -> g + gamma only)
+ FACGG=COMFAC*AS*AEM*8D0/9D0*(TH2+UH2)/(TH*UH)
+ DO 160 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 160
+ EI=KCHG(IABS(I),1)/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGG*EI**2
+ 160 CONTINUE
+
+ ELSEIF(ISUB.EQ.18) THEN
+C...f + fbar -> gamma + gamma
+ FACGG=COMFAC*AEM**2*2D0*(TH2+UH2)/(TH*UH)
+ DO 170 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 170
+ EI=KCHG(IABS(I),1)/3D0
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACGG*FCOI*EI**4
+ 170 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.40) THEN
+ IF(ISUB.EQ.28) THEN
+C...f + g -> f + g (q + g -> q + g only)
+ FACQG1=COMFAC*AS**2*4D0/9D0*((2D0+MSTP(34)*1D0/4D0)*UH2/TH2-
+ & UH/SH)*FACA
+ FACQG2=COMFAC*AS**2*4D0/9D0*((2D0+MSTP(34)*1D0/4D0)*SH2/TH2-
+ & SH/UH)
+ DO 190 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.10) GOTO 190
+ DO 180 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 180
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 180
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQG1
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQG2
+ 180 CONTINUE
+ 190 CONTINUE
+
+ ELSEIF(ISUB.EQ.29) THEN
+C...f + g -> f + gamma (q + g -> q + gamma only)
+ FGQ=COMFAC*FACA*AS*AEM*1D0/3D0*(SH2+UH2)/(-SH*UH)
+ DO 210 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 210
+ EI=KCHG(IABS(I),1)/3D0
+ FACGQ=FGQ*EI**2
+ DO 200 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 200
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 200
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGQ
+ 200 CONTINUE
+ 210 CONTINUE
+
+ ELSEIF(ISUB.EQ.33) THEN
+C...f + gamma -> f + g (q + gamma -> q + g only)
+ FGQ=COMFAC*AS*AEM*8D0/3D0*(SH2+UH2)/(-SH*UH)
+ DO 230 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 230
+ EI=KCHG(IABS(I),1)/3D0
+ FACGQ=FGQ*EI**2
+ DO 220 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 220
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 220
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGQ
+ 220 CONTINUE
+ 230 CONTINUE
+
+ ELSEIF(ISUB.EQ.34) THEN
+C...f + gamma -> f + gamma
+ FGQ=COMFAC*AEM**2*2D0*(SH2+UH2)/(-SH*UH)
+ DO 250 I=MMINA,MMAXA
+ IF(I.EQ.0) GOTO 250
+ EI=KCHG(IABS(I),1)/3D0
+ FACGQ=FGQ*EI**4
+ DO 240 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 240
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 240
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGQ
+ 240 CONTINUE
+ 250 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.80) THEN
+ IF(ISUB.EQ.53) THEN
+C...g + g -> f + fbar (g + g -> q + qbar only)
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 270
+ IDC0=MDCY(21,2)-1
+C...Begin by d, u, s flavours.
+ FLAVWT=0D0
+ IF(MDME(IDC0+1,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(1,1)**2/SH))
+ IF(MDME(IDC0+2,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(2,1)**2/SH))
+ IF(MDME(IDC0+3,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(3,1)**2/SH))
+ FACQQ1=COMFAC*AS**2*1D0/6D0*(UH/TH-(2D0+MSTP(34)*1D0/4D0)*
+ & UH2/SH2)*FLAVWT*FACA
+ FACQQ2=COMFAC*AS**2*1D0/6D0*(TH/UH-(2D0+MSTP(34)*1D0/4D0)*
+ & TH2/SH2)*FLAVWT*FACA
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ2
+C...Next c and b flavours: modified that and uhat for fixed
+C...cos(theta-hat).
+ DO 260 IFL=4,5
+ SQMAVG=PMAS(IFL,1)**2
+ IF(MDME(IDC0+IFL,1).GE.1.AND.SH.GT.4.04D0*SQMAVG) THEN
+ BE34=SQRT(1D0-4D0*SQMAVG/SH)
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ THUHQ=THQ*UHQ-SQMAVG*SH
+ IF(MSTP(34).EQ.0) THEN
+ FACQQ1=UHQ/THQ-2D0*UHQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/THQ**2
+ FACQQ2=THQ/UHQ-2D0*THQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/UHQ**2
+ ELSE
+ FACQQ1=UHQ/THQ-2.25D0*UHQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & THQ**2+0.5D0*SQMAVG*(THQ+SQMAVG)/THQ**2-SQMAVG**2/(SH*THQ)
+ FACQQ2=THQ/UHQ-2.25D0*THQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & UHQ**2+0.5D0*SQMAVG*(UHQ+SQMAVG)/UHQ**2-SQMAVG**2/(SH*UHQ)
+ ENDIF
+ FACQQ1=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ1*BE34
+ FACQQ2=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ2*BE34
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1+2*(IFL-3)
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2+2*(IFL-3)
+ SIGH(NCHN)=FACQQ2
+ ENDIF
+ 260 CONTINUE
+ 270 CONTINUE
+
+ ELSEIF(ISUB.EQ.54) THEN
+C...g + gamma -> f + fbar (g + gamma -> q + qbar only)
+ CALL PYWIDT(21,SH,WDTP,WDTE)
+ WDTESU=0D0
+ DO 280 I=1,MIN(8,MDCY(21,3))
+ EF=KCHG(I,1)/3D0
+ WDTESU=WDTESU+EF**2*(WDTE(I,1)+WDTE(I,2)+WDTE(I,3)+
+ & WDTE(I,4))
+ 280 CONTINUE
+ FACQQ=COMFAC*AEM*AS*WDTESU*(TH2+UH2)/(TH*UH)
+ IF(KFAC(1,21)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ
+ ENDIF
+ IF(KFAC(1,22)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ
+ ENDIF
+
+ ELSEIF(ISUB.EQ.58) THEN
+C...gamma + gamma -> f + fbar
+ CALL PYWIDT(22,SH,WDTP,WDTE)
+ WDTESU=0D0
+ DO 290 I=1,MIN(12,MDCY(22,3))
+ IF(I.LE.8) EF= KCHG(I,1)/3D0
+ IF(I.GE.9) EF= KCHG(9+2*(I-8),1)/3D0
+ WDTESU=WDTESU+EF**2*(WDTE(I,1)+WDTE(I,2)+WDTE(I,3)+
+ & WDTE(I,4))
+ 290 CONTINUE
+ FACFF=COMFAC*AEM**2*WDTESU*2D0*(TH2+UH2)/(TH*UH)
+ IF(KFAC(1,22)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACFF
+ ENDIF
+
+ ELSEIF(ISUB.EQ.68) THEN
+C...g + g -> g + g
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 300
+ FACGG1=COMFAC*AS**2*9D0/4D0*(SH2/TH2+2D0*SH/TH+3D0+2D0*TH/SH+
+ & TH2/SH2)*FACA
+ FACGG2=COMFAC*AS**2*9D0/4D0*(UH2/SH2+2D0*UH/SH+3D0+2D0*SH/UH+
+ & SH2/UH2)*FACA
+ FACGG3=COMFAC*AS**2*9D0/4D0*(TH2/UH2+2D0*TH/UH+3D0+2D0*UH/TH+
+ & UH2/TH2)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACGG1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=0.5D0*FACGG2
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=3
+ SIGH(NCHN)=0.5D0*FACGG3
+ 300 CONTINUE
+
+ ELSEIF(ISUB.EQ.80) THEN
+C...q + gamma -> q' + pi+/-
+ FQPI=COMFAC*(2D0*AEM/9D0)*(-SH/TH)*(1D0/SH2+1D0/TH2)
+ ASSH=PYALPS(MAX(0.5D0,0.5D0*SH))
+ Q2FPSH=0.55D0/LOG(MAX(2D0,2D0*SH))
+ DELSH=UH*SQRT(ASSH*Q2FPSH)
+ ASUH=PYALPS(MAX(0.5D0,-0.5D0*UH))
+ Q2FPUH=0.55D0/LOG(MAX(2D0,-2D0*UH))
+ DELUH=SH*SQRT(ASUH*Q2FPUH)
+ DO 320 I=MAX(-2,MMINA),MIN(2,MMAXA)
+ IF(I.EQ.0) GOTO 320
+ EI=KCHG(IABS(I),1)/3D0
+ EJ=SIGN(1D0-ABS(EI),EI)
+ DO 310 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 310
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 310
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FQPI*(EI*DELSH+EJ*DELUH)**2
+ 310 CONTINUE
+ 320 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.100) THEN
+ IF(ISUB.EQ.91) THEN
+C...Elastic scattering
+ SIGS=VINT(315)*VINT(316)*SIGT(0,0,1)
+
+ ELSEIF(ISUB.EQ.92) THEN
+C...Single diffractive scattering (first side, i.e. XB)
+ SIGS=VINT(315)*VINT(316)*SIGT(0,0,2)
+
+ ELSEIF(ISUB.EQ.93) THEN
+C...Single diffractive scattering (second side, i.e. AX)
+ SIGS=VINT(315)*VINT(316)*SIGT(0,0,3)
+
+ ELSEIF(ISUB.EQ.94) THEN
+C...Double diffractive scattering
+ SIGS=VINT(315)*VINT(316)*SIGT(0,0,4)
+
+ ELSEIF(ISUB.EQ.95) THEN
+C...Low-pT scattering
+ SIGS=VINT(315)*VINT(316)*SIGT(0,0,5)
+
+ ELSEIF(ISUB.EQ.96) THEN
+C...Multiple interactions: sum of QCD processes
+ CALL PYWIDT(21,SH,WDTP,WDTE)
+
+C...q + q' -> q + q'
+ FACQQ1=COMFAC*AS**2*4D0/9D0*(SH2+UH2)/TH2
+ FACQQB=COMFAC*AS**2*4D0/9D0*((SH2+UH2)/TH2*FACA-
+ & MSTP(34)*2D0/3D0*UH2/(SH*TH))
+ FACQQ2=COMFAC*AS**2*4D0/9D0*(SH2+TH2)/UH2
+ FACQQI=-COMFAC*AS**2*4D0/9D0*MSTP(34)*2D0/3D0*SH2/(TH*UH)
+ RATQQI=(FACQQ1+FACQQ2+FACQQI)/(FACQQ1+FACQQ2)
+ DO 340 I=-5,5
+ IF(I.EQ.0) GOTO 340
+ DO 330 J=-5,5
+ IF(J.EQ.0) GOTO 330
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=111
+ SIGH(NCHN)=FACQQ1
+ IF(I.EQ.-J) SIGH(NCHN)=FACQQB
+ IF(I.EQ.J) THEN
+ SIGH(NCHN)=0.5D0*FACQQ1*RATQQI
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=112
+ SIGH(NCHN)=0.5D0*FACQQ2*RATQQI
+ ENDIF
+ 330 CONTINUE
+ 340 CONTINUE
+
+C...q + qbar -> q' + qbar' or g + g
+ FACQQB=COMFAC*AS**2*4D0/9D0*(TH2+UH2)/SH2*
+ & (WDTE(0,1)+WDTE(0,2)+WDTE(0,3)+WDTE(0,4))
+ FACGG1=COMFAC*AS**2*32D0/27D0*(UH/TH-(2D0+MSTP(34)*1D0/4D0)*
+ & UH2/SH2)
+ FACGG2=COMFAC*AS**2*32D0/27D0*(TH/UH-(2D0+MSTP(34)*1D0/4D0)*
+ & TH2/SH2)
+ DO 350 I=-5,5
+ IF(I.EQ.0) GOTO 350
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=121
+ SIGH(NCHN)=FACQQB
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=131
+ SIGH(NCHN)=0.5D0*FACGG1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=132
+ SIGH(NCHN)=0.5D0*FACGG2
+ 350 CONTINUE
+
+C...q + g -> q + g
+ FACQG1=COMFAC*AS**2*4D0/9D0*((2D0+MSTP(34)*1D0/4D0)*UH2/TH2-
+ & UH/SH)*FACA
+ FACQG2=COMFAC*AS**2*4D0/9D0*((2D0+MSTP(34)*1D0/4D0)*SH2/TH2-
+ & SH/UH)
+ DO 370 I=-5,5
+ IF(I.EQ.0) GOTO 370
+ DO 360 ISDE=1,2
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=281
+ SIGH(NCHN)=FACQG1
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=282
+ SIGH(NCHN)=FACQG2
+ 360 CONTINUE
+ 370 CONTINUE
+
+C...g + g -> q + qbar (only d, u, s)
+ IDC0=MDCY(21,2)-1
+ FLAVWT=0D0
+ IF(MDME(IDC0+1,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(1,1)**2/SH))
+ IF(MDME(IDC0+2,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(2,1)**2/SH))
+ IF(MDME(IDC0+3,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(3,1)**2/SH))
+ FACQQ1=COMFAC*AS**2*1D0/6D0*(UH/TH-(2D0+MSTP(34)*1D0/4D0)*
+ & UH2/SH2)*FLAVWT*FACA
+ FACQQ2=COMFAC*AS**2*1D0/6D0*(TH/UH-(2D0+MSTP(34)*1D0/4D0)*
+ & TH2/SH2)*FLAVWT*FACA
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=531
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=532
+ SIGH(NCHN)=FACQQ2
+
+C...g + g -> c + cbar, b + bbar: modified that/uhat for fixed
+C...cos(theta-hat)
+ DO 380 IFL=4,5
+ SQMAVG=PMAS(IFL,1)**2
+ IF(MDME(IDC0+IFL,1).GE.1.AND.SH.GT.4.04D0*SQMAVG) THEN
+ BE34=SQRT(1D0-4D0*SQMAVG/SH)
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ THUHQ=THQ*UHQ-SQMAVG*SH
+ IF(MSTP(34).EQ.0) THEN
+ FACQQ1=UHQ/THQ-2D0*UHQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/THQ**2
+ FACQQ2=THQ/UHQ-2D0*THQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/UHQ**2
+ ELSE
+ FACQQ1=UHQ/THQ-2.25D0*UHQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & THQ**2+0.5D0*SQMAVG*(THQ+SQMAVG)/THQ**2-SQMAVG**2/(SH*THQ)
+ FACQQ2=THQ/UHQ-2.25D0*THQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & UHQ**2+0.5D0*SQMAVG*(UHQ+SQMAVG)/UHQ**2-SQMAVG**2/(SH*UHQ)
+ ENDIF
+ FACQQ1=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ1*BE34
+ FACQQ2=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ2*BE34
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=531+2*(IFL-3)
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=532+2*(IFL-3)
+ SIGH(NCHN)=FACQQ2
+ ENDIF
+ 380 CONTINUE
+
+C...g + g -> g + g
+ FACGG1=COMFAC*AS**2*9D0/4D0*(SH2/TH2+2D0*SH/TH+3D0+
+ & 2D0*TH/SH+TH2/SH2)*FACA
+ FACGG2=COMFAC*AS**2*9D0/4D0*(UH2/SH2+2D0*UH/SH+3D0+
+ & 2D0*SH/UH+SH2/UH2)*FACA
+ FACGG3=COMFAC*AS**2*9D0/4D0*(TH2/UH2+2D0*TH/UH+3+
+ & 2D0*UH/TH+UH2/TH2)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=681
+ SIGH(NCHN)=0.5D0*FACGG1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=682
+ SIGH(NCHN)=0.5D0*FACGG2
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=683
+ SIGH(NCHN)=0.5D0*FACGG3
+
+ ELSEIF(ISUB.EQ.99) THEN
+C...f + gamma* -> f.
+ IF(MINT(107).EQ.4) THEN
+ Q2GA=VINT(307)
+ P2GA=VINT(308)
+ ISDE=2
+ ELSE
+ Q2GA=VINT(308)
+ P2GA=VINT(307)
+ ISDE=1
+ ENDIF
+ COMFAC=PARU(5)*4D0*PARU(1)**2*PARU(101)*VINT(315)*VINT(316)
+ PM2RHO=PMAS(PYCOMP(113),1)**2
+ IF(MSTP(19).EQ.0) THEN
+ COMFAC=COMFAC/Q2GA
+ ELSEIF(MSTP(19).EQ.1) THEN
+ COMFAC=COMFAC/(Q2GA+PM2RHO)
+ ELSEIF(MSTP(19).EQ.2) THEN
+ COMFAC=COMFAC*Q2GA/(Q2GA+PM2RHO)**2
+ ELSE
+ COMFAC=COMFAC*Q2GA/(Q2GA+PM2RHO)**2
+ W2GA=VINT(2)
+ IF(MINT(11).EQ.22.AND.MINT(12).EQ.22) THEN
+ RDRDS=4.1D-3*W2GA**2.167D0/((Q2GA+0.15D0*W2GA)**2*
+ & Q2GA**0.75D0)*(1D0+0.11D0*Q2GA*P2GA/(1D0+0.02D0*P2GA**2))
+ XGA=Q2GA/(W2GA+VINT(307)+VINT(308))
+ ELSE
+ RDRDS=1.5D-4*W2GA**2.167D0/((Q2GA+0.041D0*W2GA)**2*
+ & Q2GA**0.57D0)
+ XGA=Q2GA/(W2GA+Q2GA-PMAS(PYCOMP(MINT(10+ISDE)),1)**2)
+ ENDIF
+ COMFAC=COMFAC*EXP(-MAX(1D-10,RDRDS))
+ IF(MSTP(19).EQ.4) COMFAC=COMFAC/MAX(1D-2,1D0-XGA)
+ ENDIF
+ DO 390 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(ISDE,I).EQ.0) GOTO 390
+ IF(IABS(I).LT.10.AND.IABS(I).GT.MSTP(58)) GOTO 390
+ EI=KCHG(IABS(I),1)/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=COMFAC*EI**2
+ 390 CONTINUE
+ ENDIF
+
+ ELSE
+ IF(ISUB.EQ.114.OR.ISUB.EQ.115) THEN
+C...g + g -> gamma + gamma or g + g -> g + gamma
+ A0STUR=0D0
+ A0STUI=0D0
+ A0TSUR=0D0
+ A0TSUI=0D0
+ A0UTSR=0D0
+ A0UTSI=0D0
+ A1STUR=0D0
+ A1STUI=0D0
+ A2STUR=0D0
+ A2STUI=0D0
+ ALST=LOG(-SH/TH)
+ ALSU=LOG(-SH/UH)
+ ALTU=LOG(TH/UH)
+ IMAX=2*MSTP(1)
+ IF(MSTP(38).GE.1.AND.MSTP(38).LE.8) IMAX=MSTP(38)
+ DO 400 I=1,IMAX
+ EI=KCHG(IABS(I),1)/3D0
+ EIWT=EI**2
+ IF(ISUB.EQ.115) EIWT=EI
+ SQMQ=PMAS(I,1)**2
+ EPSS=4D0*SQMQ/SH
+ EPST=4D0*SQMQ/TH
+ EPSU=4D0*SQMQ/UH
+ IF((MSTP(38).GE.1.AND.MSTP(38).LE.8).OR.EPSS.LT.1D-4) THEN
+ B0STUR=1D0+(TH-UH)/SH*ALTU+0.5D0*(TH2+UH2)/SH2*(ALTU**2+
+ & PARU(1)**2)
+ B0STUI=0D0
+ B0TSUR=1D0+(SH-UH)/TH*ALSU+0.5D0*(SH2+UH2)/TH2*ALSU**2
+ B0TSUI=-PARU(1)*((SH-UH)/TH+(SH2+UH2)/TH2*ALSU)
+ B0UTSR=1D0+(SH-TH)/UH*ALST+0.5D0*(SH2+TH2)/UH2*ALST**2
+ B0UTSI=-PARU(1)*((SH-TH)/UH+(SH2+TH2)/UH2*ALST)
+ B1STUR=-1D0
+ B1STUI=0D0
+ B2STUR=-1D0
+ B2STUI=0D0
+ ELSE
+ CALL PYWAUX(1,EPSS,W1SR,W1SI)
+ CALL PYWAUX(1,EPST,W1TR,W1TI)
+ CALL PYWAUX(1,EPSU,W1UR,W1UI)
+ CALL PYWAUX(2,EPSS,W2SR,W2SI)
+ CALL PYWAUX(2,EPST,W2TR,W2TI)
+ CALL PYWAUX(2,EPSU,W2UR,W2UI)
+ CALL PYI3AU(EPSS,TH/UH,Y3STUR,Y3STUI)
+ CALL PYI3AU(EPSS,UH/TH,Y3SUTR,Y3SUTI)
+ CALL PYI3AU(EPST,SH/UH,Y3TSUR,Y3TSUI)
+ CALL PYI3AU(EPST,UH/SH,Y3TUSR,Y3TUSI)
+ CALL PYI3AU(EPSU,SH/TH,Y3USTR,Y3USTI)
+ CALL PYI3AU(EPSU,TH/SH,Y3UTSR,Y3UTSI)
+ B0STUR=1D0+(1D0+2D0*TH/SH)*W1TR+(1D0+2D0*UH/SH)*W1UR+
+ & 0.5D0*((TH2+UH2)/SH2-EPSS)*(W2TR+W2UR)-
+ & 0.25D0*EPST*(1D0-0.5D0*EPSS)*(Y3SUTR+Y3TUSR)-
+ & 0.25D0*EPSU*(1D0-0.5D0*EPSS)*(Y3STUR+Y3UTSR)+
+ & 0.25D0*(-2D0*(TH2+UH2)/SH2+4D0*EPSS+EPST+EPSU+
+ & 0.5D0*EPST*EPSU)*(Y3TSUR+Y3USTR)
+ B0STUI=(1D0+2D0*TH/SH)*W1TI+(1D0+2D0*UH/SH)*W1UI+
+ & 0.5D0*((TH2+UH2)/SH2-EPSS)*(W2TI+W2UI)-
+ & 0.25D0*EPST*(1D0-0.5D0*EPSS)*(Y3SUTI+Y3TUSI)-
+ & 0.25D0*EPSU*(1D0-0.5D0*EPSS)*(Y3STUI+Y3UTSI)+
+ & 0.25D0*(-2D0*(TH2+UH2)/SH2+4D0*EPSS+EPST+EPSU+
+ & 0.5D0*EPST*EPSU)*(Y3TSUI+Y3USTI)
+ B0TSUR=1D0+(1D0+2D0*SH/TH)*W1SR+(1D0+2D0*UH/TH)*W1UR+
+ & 0.5D0*((SH2+UH2)/TH2-EPST)*(W2SR+W2UR)-
+ & 0.25D0*EPSS*(1D0-0.5D0*EPST)*(Y3TUSR+Y3SUTR)-
+ & 0.25D0*EPSU*(1D0-0.5D0*EPST)*(Y3TSUR+Y3USTR)+
+ & 0.25D0*(-2D0*(SH2+UH2)/TH2+4D0*EPST+EPSS+EPSU+
+ & 0.5D0*EPSS*EPSU)*(Y3STUR+Y3UTSR)
+ B0TSUI=(1D0+2D0*SH/TH)*W1SI+(1D0+2D0*UH/TH)*W1UI+
+ & 0.5D0*((SH2+UH2)/TH2-EPST)*(W2SI+W2UI)-
+ & 0.25D0*EPSS*(1D0-0.5D0*EPST)*(Y3TUSI+Y3SUTI)-
+ & 0.25D0*EPSU*(1D0-0.5D0*EPST)*(Y3TSUI+Y3USTI)+
+ & 0.25D0*(-2D0*(SH2+UH2)/TH2+4D0*EPST+EPSS+EPSU+
+ & 0.5D0*EPSS*EPSU)*(Y3STUI+Y3UTSI)
+ B0UTSR=1D0+(1D0+2D0*TH/UH)*W1TR+(1D0+2D0*SH/UH)*W1SR+
+ & 0.5D0*((TH2+SH2)/UH2-EPSU)*(W2TR+W2SR)-
+ & 0.25D0*EPST*(1D0-0.5D0*EPSU)*(Y3USTR+Y3TSUR)-
+ & 0.25D0*EPSS*(1D0-0.5D0*EPSU)*(Y3UTSR+Y3STUR)+
+ & 0.25D0*(-2D0*(TH2+SH2)/UH2+4D0*EPSU+EPST+EPSS+
+ & 0.5D0*EPST*EPSS)*(Y3TUSR+Y3SUTR)
+ B0UTSI=(1D0+2D0*TH/UH)*W1TI+(1D0+2D0*SH/UH)*W1SI+
+ & 0.5D0*((TH2+SH2)/UH2-EPSU)*(W2TI+W2SI)-
+ & 0.25D0*EPST*(1D0-0.5D0*EPSU)*(Y3USTI+Y3TSUI)-
+ & 0.25D0*EPSS*(1D0-0.5D0*EPSU)*(Y3UTSI+Y3STUI)+
+ & 0.25D0*(-2D0*(TH2+SH2)/UH2+4D0*EPSU+EPST+EPSS+
+ & 0.5D0*EPST*EPSS)*(Y3TUSI+Y3SUTI)
+ B1STUR=-1D0-0.25D0*(EPSS+EPST+EPSU)*(W2SR+W2TR+W2UR)+
+ & 0.25D0*(EPSU+0.5D0*EPSS*EPST)*(Y3SUTR+Y3TUSR)+
+ & 0.25D0*(EPST+0.5D0*EPSS*EPSU)*(Y3STUR+Y3UTSR)+
+ & 0.25D0*(EPSS+0.5D0*EPST*EPSU)*(Y3TSUR+Y3USTR)
+ B1STUI=-0.25D0*(EPSS+EPST+EPSU)*(W2SI+W2TI+W2UI)+
+ & 0.25D0*(EPSU+0.5D0*EPSS*EPST)*(Y3SUTI+Y3TUSI)+
+ & 0.25D0*(EPST+0.5D0*EPSS*EPSU)*(Y3STUI+Y3UTSI)+
+ & 0.25D0*(EPSS+0.5D0*EPST*EPSU)*(Y3TSUI+Y3USTI)
+ B2STUR=-1D0+0.125D0*EPSS*EPST*(Y3SUTR+Y3TUSR)+
+ & 0.125D0*EPSS*EPSU*(Y3STUR+Y3UTSR)+
+ & 0.125D0*EPST*EPSU*(Y3TSUR+Y3USTR)
+ B2STUI=0.125D0*EPSS*EPST*(Y3SUTI+Y3TUSI)+
+ & 0.125D0*EPSS*EPSU*(Y3STUI+Y3UTSI)+
+ & 0.125D0*EPST*EPSU*(Y3TSUI+Y3USTI)
+ ENDIF
+ A0STUR=A0STUR+EIWT*B0STUR
+ A0STUI=A0STUI+EIWT*B0STUI
+ A0TSUR=A0TSUR+EIWT*B0TSUR
+ A0TSUI=A0TSUI+EIWT*B0TSUI
+ A0UTSR=A0UTSR+EIWT*B0UTSR
+ A0UTSI=A0UTSI+EIWT*B0UTSI
+ A1STUR=A1STUR+EIWT*B1STUR
+ A1STUI=A1STUI+EIWT*B1STUI
+ A2STUR=A2STUR+EIWT*B2STUR
+ A2STUI=A2STUI+EIWT*B2STUI
+ 400 CONTINUE
+ ASQSUM=A0STUR**2+A0STUI**2+A0TSUR**2+A0TSUI**2+A0UTSR**2+
+ & A0UTSI**2+4D0*A1STUR**2+4D0*A1STUI**2+A2STUR**2+A2STUI**2
+ FACGG=COMFAC*FACA/(16D0*PARU(1)**2)*AS**2*AEM**2*ASQSUM
+ FACGP=COMFAC*FACA*5D0/(192D0*PARU(1)**2)*AS**3*AEM*ASQSUM
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 410
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ IF(ISUB.EQ.114) SIGH(NCHN)=0.5D0*FACGG
+ IF(ISUB.EQ.115) SIGH(NCHN)=FACGP
+ 410 CONTINUE
+
+ ELSEIF(ISUB.EQ.131.OR.ISUB.EQ.132) THEN
+C...f + gamma*_(T,L) -> f + g (q + gamma*_(T,L) -> q + g only)
+ PH=0D0
+ IF(MINT(15).EQ.22.AND.MINT(107).EQ.0.AND.VINT(3).LT.0D0)
+ & PH=VINT(3)**2
+ IF(MINT(16).EQ.22.AND.MINT(108).EQ.0.AND.VINT(4).LT.0D0)
+ & PH=VINT(4)**2
+ IF(ISUB.EQ.131) THEN
+ FGQ=COMFAC*AS*AEM*8D0/3D0*SH**2/(SH+PH)**2*
+ & ((SH2+UH2-2D0*PH*TH)/(-SH*UH)-2D0*PH*TH/(SH+PH)**2)
+ ELSE
+ FGQ=COMFAC*AS*AEM*8D0/3D0*SH**2/(SH+PH)**4*(-4D0*PH*TH)
+ ENDIF
+ DO 430 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 430
+ EI=KCHG(IABS(I),1)/3D0
+ FACGQ=FGQ*EI**2
+ DO 420 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 420
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 420
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGQ
+ 420 CONTINUE
+ 430 CONTINUE
+
+ ELSEIF(ISUB.EQ.133.OR.ISUB.EQ.134) THEN
+C...f + gamma*_(T,L) -> f + gamma
+ PH=0D0
+ IF(MINT(15).EQ.22.AND.MINT(107).EQ.0.AND.VINT(3).LT.0D0)
+ & PH=VINT(3)**2
+ IF(MINT(16).EQ.22.AND.MINT(108).EQ.0.AND.VINT(4).LT.0D0)
+ & PH=VINT(4)**2
+ IF(ISUB.EQ.133) THEN
+ FGQ=COMFAC*AEM**2*2D0*SH**2/(SH+PH)**2*
+ & ((SH2+UH2-2D0*PH*TH)/(-SH*UH)-2D0*PH*TH/(SH+PH)**2)
+ ELSE
+ FGQ=COMFAC*AEM**2*2D0*SH**2/(SH+PH)**4*(-4D0*PH*TH)
+ ENDIF
+ DO 450 I=MMINA,MMAXA
+ IF(I.EQ.0) GOTO 450
+ EI=KCHG(IABS(I),1)/3D0
+ FACGQ=FGQ*EI**4
+ DO 440 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 440
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 440
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGQ
+ 440 CONTINUE
+ 450 CONTINUE
+
+ ELSEIF(ISUB.EQ.135.OR.ISUB.EQ.136) THEN
+C...g + gamma*_(T,L) -> f + fbar (g + gamma*_(T,L) -> q + qbar only)
+ PH=0D0
+ IF(MINT(15).EQ.22.AND.MINT(107).EQ.0.AND.VINT(3).LT.0D0)
+ & PH=VINT(3)**2
+ IF(MINT(16).EQ.22.AND.MINT(108).EQ.0.AND.VINT(4).LT.0D0)
+ & PH=VINT(4)**2
+ CALL PYWIDT(21,SH,WDTP,WDTE)
+ WDTESU=0D0
+ DO 460 I=1,MIN(8,MDCY(21,3))
+ EF=KCHG(I,1)/3D0
+ WDTESU=WDTESU+EF**2*(WDTE(I,1)+WDTE(I,2)+WDTE(I,3)+
+ & WDTE(I,4))
+ 460 CONTINUE
+ IF(ISUB.EQ.135) THEN
+ FACQQ=COMFAC*AEM*AS*WDTESU*SH**2/(SH+PH)**2*
+ & ((TH2+UH2-2D0*PH*SH)/(TH*UH)+4D0*PH*SH/(SH+PH)**2)
+ ELSE
+ FACQQ=COMFAC*AEM*AS*WDTESU*SH**2/(SH+PH)**4*8D0*PH*SH
+ ENDIF
+ IF(KFAC(1,21)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ
+ ENDIF
+ IF(KFAC(1,22)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ
+ ENDIF
+
+ ELSEIF(ISUB.GE.137.AND.ISUB.LE.140) THEN
+C...gamma*_(T,L) + gamma*_(T,L) -> f + fbar
+ PH1=0D0
+ IF(VINT(3).LT.0D0) PH1=VINT(3)**2
+ PH2=0D0
+ IF(VINT(4).LT.0D0) PH2=VINT(4)**2
+ CALL PYWIDT(22,SH,WDTP,WDTE)
+ WDTESU=0D0
+ DO 470 I=1,MIN(12,MDCY(22,3))
+ IF(I.LE.8) EF= KCHG(I,1)/3D0
+ IF(I.GE.9) EF= KCHG(9+2*(I-8),1)/3D0
+ WDTESU=WDTESU+EF**2*(WDTE(I,1)+WDTE(I,2)+WDTE(I,3)+
+ & WDTE(I,4))
+ 470 CONTINUE
+ DLAMB2=(TH+UH)**2-4D0*PH1*PH2
+ IF(ISUB.EQ.137) THEN
+ FPARAM=-SH*(TH+UH)/DLAMB2
+ FACFF=COMFAC*AEM**2*WDTESU*2D0*SH2/(DLAMB2*TH2*UH2)*
+ & (TH*UH-PH1*PH2)*((TH2+UH2)*(1D0-2D0*FPARAM*(1D0-FPARAM))-
+ & 2D0*PH1*PH2*FPARAM**2)
+ ELSEIF(ISUB.EQ.138) THEN
+ FACFF=COMFAC*AEM**2*WDTESU*4D0*SH2*SH/(DLAMB2**2*TH2*UH2)*
+ & PH2*(4D0*(TH*UH-PH1*PH2)*(TH*UH+PH1*SH*(TH-UH)**2/DLAMB2)+
+ & 2D0*PH1**2*(TH-UH)**2)
+ ELSEIF(ISUB.EQ.139) THEN
+ FACFF=COMFAC*AEM**2*WDTESU*4D0*SH2*SH/(DLAMB2**2*TH2*UH2)*
+ & PH1*(4D0*(TH*UH-PH1*PH2)*(TH*UH+PH2*SH*(TH-UH)**2/DLAMB2)+
+ & 2D0*PH2**2*(TH-UH)**2)
+ ELSE
+ FACFF=COMFAC*AEM**2*WDTESU*32D0*SH2**2/(DLAMB2**3*TH2*UH2)*
+ & PH1*PH2*(TH*UH-PH1*PH2)*(TH-UH)**2
+ ENDIF
+ IF(KFAC(1,22)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACFF
+ ENDIF
+
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSGHF
+C...Subprocess cross sections for heavy flavour production,
+C...open and closed.
+C...Auxiliary to PYSIGH.
+
+ SUBROUTINE PYSGHF(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,/PYINT2/,/PYINT3/,
+ &/PYINT4/,/PYSGCM/
+C...Local arrays
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5)
+
+C...Determine where are charmonium/bottomonium wave function parameters.
+ IONIUM=140
+ IF(ISUB.GE.461.AND.ISUB.LE.479) IONIUM=145
+
+C...Convert bottomonium process into equivalent charmonium ones.
+ IF(ISUB.GE.461.AND.ISUB.LE.479) ISUB=ISUB-40
+
+C...Differential cross section expressions.
+
+ IF(ISUB.LE.100) THEN
+ IF(ISUB.EQ.81) THEN
+C...q + qbar -> Q + Qbar
+ SQMAVG=0.5D0*(SQM3+SQM4)-0.25D0*(SQM3-SQM4)**2/SH
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ FACQQB=COMFAC*AS**2*4D0/9D0*((THQ**2+UHQ**2)/SH2+
+ & 2D0*SQMAVG/SH)
+ IF(MSTP(35).GE.1) FACQQB=FACQQB*PYHFTH(SH,SQMAVG,0D0)
+ WID2=1D0
+ IF(MINT(55).EQ.6) WID2=WIDS(6,1)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=WIDS(MINT(55),1)
+ FACQQB=FACQQB*WID2
+ DO 100 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 100
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQB
+ 100 CONTINUE
+
+ ELSEIF(ISUB.EQ.82) THEN
+C...g + g -> Q + Qbar
+ SQMAVG=0.5D0*(SQM3+SQM4)-0.25D0*(SQM3-SQM4)**2/SH
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ THUHQ=THQ*UHQ-SQMAVG*SH
+ IF(MSTP(34).EQ.0) THEN
+ FACQQ1=UHQ/THQ-2D0*UHQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/THQ**2
+ FACQQ2=THQ/UHQ-2D0*THQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/UHQ**2
+ ELSE
+ FACQQ1=UHQ/THQ-2.25D0*UHQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & THQ**2+0.5D0*SQMAVG*(THQ+SQMAVG)/THQ**2-SQMAVG**2/(SH*THQ)
+ FACQQ2=THQ/UHQ-2.25D0*THQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & UHQ**2+0.5D0*SQMAVG*(UHQ+SQMAVG)/UHQ**2-SQMAVG**2/(SH*UHQ)
+ ENDIF
+ FACQQ1=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ1
+ FACQQ2=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ2
+ IF(MSTP(35).GE.1) THEN
+ FATRE=PYHFTH(SH,SQMAVG,2D0/7D0)
+ FACQQ1=FACQQ1*FATRE
+ FACQQ2=FACQQ2*FATRE
+ ENDIF
+ WID2=1D0
+ IF(MINT(55).EQ.6) WID2=WIDS(6,1)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=WIDS(MINT(55),1)
+ FACQQ1=FACQQ1*WID2
+ FACQQ2=FACQQ2*WID2
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 110
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ2
+ 110 CONTINUE
+
+ ELSEIF(ISUB.EQ.83) THEN
+C...f + q -> f' + Q
+ FACQQS=COMFAC*(0.5D0*AEM/XW)**2*SH*(SH-SQM3)/(SQMW-TH)**2
+ FACQQU=COMFAC*(0.5D0*AEM/XW)**2*UH*(UH-SQM3)/(SQMW-TH)**2
+ DO 130 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 130
+ DO 120 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 120
+ IF(I*J.GT.0.AND.MOD(IABS(I+J),2).EQ.0) GOTO 120
+ IF(I*J.LT.0.AND.MOD(IABS(I+J),2).EQ.1) GOTO 120
+ IF(IABS(I).LT.MINT(55).AND.MOD(IABS(I+MINT(55)),2).EQ.1)
+ & THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(MOD(MINT(55),2).EQ.0) FACCKM=VCKM(MINT(55)/2,
+ & (IABS(I)+1)/2)*VINT(180+J)
+ IF(MOD(MINT(55),2).EQ.1) FACCKM=VCKM(IABS(I)/2,
+ & (MINT(55)+1)/2)*VINT(180+J)
+ WID2=1D0
+ IF(I.GT.0) THEN
+ IF(MINT(55).EQ.6) WID2=WIDS(6,2)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=
+ & WIDS(MINT(55),2)
+ ELSE
+ IF(MINT(55).EQ.6) WID2=WIDS(6,3)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=
+ & WIDS(MINT(55),3)
+ ENDIF
+ IF(I*J.GT.0) SIGH(NCHN)=FACQQS*FACCKM*WID2
+ IF(I*J.LT.0) SIGH(NCHN)=FACQQU*FACCKM*WID2
+ ENDIF
+ IF(IABS(J).LT.MINT(55).AND.MOD(IABS(J+MINT(55)),2).EQ.1)
+ & THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ IF(MOD(MINT(55),2).EQ.0) FACCKM=VCKM(MINT(55)/2,
+ & (IABS(J)+1)/2)*VINT(180+I)
+ IF(MOD(MINT(55),2).EQ.1) FACCKM=VCKM(IABS(J)/2,
+ & (MINT(55)+1)/2)*VINT(180+I)
+ IF(J.GT.0) THEN
+ IF(MINT(55).EQ.6) WID2=WIDS(6,2)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=
+ & WIDS(MINT(55),2)
+ ELSE
+ IF(MINT(55).EQ.6) WID2=WIDS(6,3)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=
+ & WIDS(MINT(55),3)
+ ENDIF
+ IF(I*J.GT.0) SIGH(NCHN)=FACQQS*FACCKM*WID2
+ IF(I*J.LT.0) SIGH(NCHN)=FACQQU*FACCKM*WID2
+ ENDIF
+ 120 CONTINUE
+ 130 CONTINUE
+
+ ELSEIF(ISUB.EQ.84) THEN
+C...g + gamma -> Q + Qbar
+ SQMAVG=0.5D0*(SQM3+SQM4)-0.25D0*(SQM3-SQM4)**2/SH
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ FACQQ=COMFAC*AS*AEM*(KCHG(IABS(MINT(55)),1)/3D0)**2*
+ & (THQ**2+UHQ**2+4D0*SQMAVG*SH*(1D0-SQMAVG*SH/(THQ*UHQ)))/
+ & (THQ*UHQ)
+ IF(MSTP(35).GE.1) FACQQ=FACQQ*PYHFTH(SH,SQMAVG,0D0)
+ WID2=1D0
+ IF(MINT(55).EQ.6) WID2=WIDS(6,1)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=WIDS(MINT(55),1)
+ FACQQ=FACQQ*WID2
+ IF(KFAC(1,21)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ
+ ENDIF
+ IF(KFAC(1,22)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ
+ ENDIF
+
+ ELSEIF(ISUB.EQ.85) THEN
+C...gamma + gamma -> F + Fbar (heavy fermion, quark or lepton)
+ SQMAVG=0.5D0*(SQM3+SQM4)-0.25D0*(SQM3-SQM4)**2/SH
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ FACFF=COMFAC*AEM**2*(KCHG(IABS(MINT(56)),1)/3D0)**4*2D0*
+ & ((1D0-PARJ(131)*PARJ(132))*(THQ*UHQ-SQMAVG*SH)*
+ & (UHQ**2+THQ**2+2D0*SQMAVG*SH)+(1D0+PARJ(131)*PARJ(132))*
+ & SQMAVG*SH**2*(SH-2D0*SQMAVG))/(THQ*UHQ)**2
+ IF(IABS(MINT(56)).LT.10) FACFF=3D0*FACFF
+ IF(IABS(MINT(56)).LT.10.AND.MSTP(35).GE.1)
+ & FACFF=FACFF*PYHFTH(SH,SQMAVG,1D0)
+ WID2=1D0
+ IF(MINT(56).EQ.6) WID2=WIDS(6,1)
+ IF(MINT(56).EQ.7.OR.MINT(56).EQ.8) WID2=WIDS(MINT(56),1)
+ IF(MINT(56).EQ.17) WID2=WIDS(17,1)
+ FACFF=FACFF*WID2
+ IF(KFAC(1,22)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACFF
+ ENDIF
+
+ ELSEIF(ISUB.EQ.86) THEN
+C...g + g -> J/Psi + g
+ FACQQG=COMFAC*AS**3*(5D0/9D0)*PARP(38)*SQRT(SQM3)*
+ & (((SH*(SH-SQM3))**2+(TH*(TH-SQM3))**2+(UH*(UH-SQM3))**2)/
+ & ((TH-SQM3)*(UH-SQM3))**2)/(SH-SQM3)**2
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+
+ ELSEIF(ISUB.EQ.87) THEN
+C...g + g -> chi_0c + g
+ PGTW=(SH*TH+TH*UH+UH*SH)/SH2
+ QGTW=(SH*TH*UH)/SH**3
+ RGTW=SQM3/SH
+ FACQQG=COMFAC*AS**3*4D0*(PARP(39)/SQRT(SQM3))*(1D0/SH)*
+ & (9D0*RGTW**2*PGTW**4*(RGTW**4-2D0*RGTW**2*PGTW+PGTW**2)-
+ & 6D0*RGTW*PGTW**3*QGTW*(2D0*RGTW**4-5D0*RGTW**2*PGTW+PGTW**2)-
+ & PGTW**2*QGTW**2*(RGTW**4+2D0*RGTW**2*PGTW-PGTW**2)+
+ & 2D0*RGTW*PGTW*QGTW**3*(RGTW**2-PGTW)+6D0*RGTW**2*QGTW**4)/
+ & (QGTW*(QGTW-RGTW*PGTW)**4)
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+
+ ELSEIF(ISUB.EQ.88) THEN
+C...g + g -> chi_1c + g
+ PGTW=(SH*TH+TH*UH+UH*SH)/SH2
+ QGTW=(SH*TH*UH)/SH**3
+ RGTW=SQM3/SH
+ FACQQG=COMFAC*AS**3*12D0*(PARP(39)/SQRT(SQM3))*(1D0/SH)*
+ & PGTW**2*(RGTW*PGTW**2*(RGTW**2-4D0*PGTW)+2D0*QGTW*(-RGTW**4+
+ & 5D0*RGTW**2*PGTW+PGTW**2)-15D0*RGTW*QGTW**2)/
+ & (QGTW-RGTW*PGTW)**4
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+
+ ELSEIF(ISUB.EQ.89) THEN
+C...g + g -> chi_2c + g
+ PGTW=(SH*TH+TH*UH+UH*SH)/SH2
+ QGTW=(SH*TH*UH)/SH**3
+ RGTW=SQM3/SH
+ FACQQG=COMFAC*AS**3*4D0*(PARP(39)/SQRT(SQM3))*(1D0/SH)*
+ & (12D0*RGTW**2*PGTW**4*(RGTW**4-2D0*RGTW**2*PGTW+PGTW**2)-
+ & 3D0*RGTW*PGTW**3*QGTW*(8D0*RGTW**4-RGTW**2*PGTW+4D0*PGTW**2)+
+ & 2D0*PGTW**2*QGTW**2*(-7D0*RGTW**4+43D0*RGTW**2*PGTW+PGTW**2)+
+ & RGTW*PGTW*QGTW**3*(16D0*RGTW**2-61D0*PGTW)+12D0*RGTW**2*
+ & QGTW**4)/(QGTW*(QGTW-RGTW*PGTW)**4)
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+ ENDIF
+
+ ELSEIF(ISUB.LE.200) THEN
+ IF(ISUB.EQ.104) THEN
+C...g + g -> chi_c0.
+ KC=PYCOMP(10441)
+ FACBW=COMFAC*12D0*AS**2*PARP(39)*PMAS(KC,2)/
+ & ((SH-PMAS(KC,1)**2)**2+(PMAS(KC,1)*PMAS(KC,2))**2)
+ IF(ABS(SQRT(SH)-PMAS(KC,1)).GT.50D0*PMAS(KC,2)) FACBW=0D0
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACBW
+ ENDIF
+
+ ELSEIF(ISUB.EQ.105) THEN
+C...g + g -> chi_c2.
+ KC=PYCOMP(445)
+ FACBW=COMFAC*16D0*AS**2*PARP(39)*PMAS(KC,2)/
+ & ((SH-PMAS(KC,1)**2)**2+(PMAS(KC,1)*PMAS(KC,2))**2)
+ IF(ABS(SQRT(SH)-PMAS(KC,1)).GT.50D0*PMAS(KC,2)) FACBW=0D0
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACBW
+ ENDIF
+
+ ELSEIF(ISUB.EQ.106) THEN
+C...g + g -> J/Psi + gamma.
+ EQ=KCHG(MOD(KFPR(ISUB,1)/10,10),1)/3D0
+ FACQQG=COMFAC*AEM*EQ**2*AS**2*(4D0/3D0)*PARP(38)*SQRT(SQM3)*
+ & (((SH*(SH-SQM3))**2+(TH*(TH-SQM3))**2+(UH*(UH-SQM3))**2)/
+ & ((TH-SQM3)*(UH-SQM3))**2)/(SH-SQM3)**2
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+
+ ELSEIF(ISUB.EQ.107) THEN
+C...g + gamma -> J/Psi + g.
+ EQ=KCHG(MOD(KFPR(ISUB,1)/10,10),1)/3D0
+ FACQQG=COMFAC*AEM*EQ**2*AS**2*(32D0/3D0)*PARP(38)*SQRT(SQM3)*
+ & (((SH*(SH-SQM3))**2+(TH*(TH-SQM3))**2+(UH*(UH-SQM3))**2)/
+ & ((TH-SQM3)*(UH-SQM3))**2)/(SH-SQM3)**2
+ IF(KFAC(1,21)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+ IF(KFAC(1,22)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+
+ ELSEIF(ISUB.EQ.108) THEN
+C...gamma + gamma -> J/Psi + gamma.
+ EQ=KCHG(MOD(KFPR(ISUB,1)/10,10),1)/3D0
+ FACQQG=COMFAC*AEM**3*EQ**6*384D0*PARP(38)*SQRT(SQM3)*
+ & (((SH*(SH-SQM3))**2+(TH*(TH-SQM3))**2+(UH*(UH-SQM3))**2)/
+ & ((TH-SQM3)*(UH-SQM3))**2)/(SH-SQM3)**2
+ IF(KFAC(1,22)*KFAC(2,22).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG
+ ENDIF
+ ENDIF
+
+C...QUARKONIA+++
+C...Additional code by Stefan Wolf
+ ELSE
+
+C...Common code for quarkonium production.
+ SHTH=SH+TH
+ THUH=TH+UH
+ UHSH=UH+SH
+ SHTH2=SHTH**2
+ THUH2=THUH**2
+ UHSH2=UHSH**2
+ IF ( (ISUB.GE.421.AND.ISUB.LE.424).OR.
+ & (ISUB.GE.431.AND.ISUB.LE.433)) THEN
+ SQMQQ=SQM3
+ ELSEIF((ISUB.GE.425.AND.ISUB.LE.430).OR.
+ & (ISUB.GE.434.AND.ISUB.LE.439)) THEN
+ SQMQQ=SQM4
+ ENDIF
+ SQMQQR=SQRT(SQMQQ)
+ IF(MSTP(145).EQ.1) THEN
+ IF ( (ISUB.GE.421.AND.ISUB.LE.427).OR.
+ & (ISUB.GE.431.AND.ISUB.LE.436)) THEN
+ AQ=UHSH/(2D0*X(1)) + SHTH/(2D0*X(2))
+ BQ=UHSH/(2D0*X(1)) - SHTH/(2D0*X(2))
+ ATILK1=X(1)*VINT(2)/2D0-UHSH/(2D0*SQMQQ)*AQ
+ ATILK2=X(2)*VINT(2)/2D0-SHTH/(2D0*SQMQQ)*AQ
+ BTILK1=-X(1)*VINT(2)/2D0-UHSH/(2D0*SQMQQ)*BQ
+ BTILK2=X(2)*VINT(2)/2D0-SHTH/(2D0*SQMQQ)*BQ
+ ELSEIF( (ISUB.GE.428.AND.ISUB.LE.430).OR.
+ & ISUB.GE.437) THEN
+ AQ=SHTH/(2D0*X(1)) + UHSH/(2D0*X(2))
+ BQ=SHTH/(2D0*X(1)) - UHSH/(2D0*X(2))
+ ATILK1=X(1)*VINT(2)/2D0-SHTH/(2D0*SQMQQ)*AQ
+ ATILK2=X(2)*VINT(2)/2D0-UHSH/(2D0*SQMQQ)*AQ
+ BTILK1=-X(1)*VINT(2)/2D0-SHTH/(2D0*SQMQQ)*BQ
+ BTILK2=X(2)*VINT(2)/2D0-UHSH/(2D0*SQMQQ)*BQ
+ ENDIF
+ AQ2=AQ**2
+ BQ2=BQ**2
+ SMQQ2=SQMQQ*VINT(2)
+C...Polarisation frames
+ IF(MSTP(146).EQ.1) THEN
+C...Recoil frame
+ POLH1=SQRT(AQ2-SMQQ2)
+ POLH2=SQRT(VINT(2)*(AQ2-BQ2-SMQQ2))
+ AZ=-SQMQQR/POLH1
+ BZ=0D0
+ AX=AQ*BQ/(POLH1*POLH2)
+ BX=-POLH1/POLH2
+ ELSEIF(MSTP(146).EQ.2) THEN
+C...Gottfried Jackson frame
+ POLH1=AQ+BQ
+ POLH2=POLH1*SQRT(VINT(2)*(AQ2-BQ2-SMQQ2))
+ AZ=SQMQQR/POLH1
+ BZ=AZ
+ AX=-(BQ2+AQ*BQ+SMQQ2)/POLH2
+ BX=(AQ2+AQ*BQ-SMQQ2)/POLH2
+ ELSEIF(MSTP(146).EQ.3) THEN
+C...Target frame
+ POLH1=AQ-BQ
+ POLH2=POLH1*SQRT(VINT(2)*(AQ2-BQ2-SMQQ2))
+ AZ=-SQMQQR/POLH1
+ BZ=-AZ
+ AX=-(BQ2-AQ*BQ+SMQQ2)/POLH2
+ BX=-(AQ2-AQ*BQ-SMQQ2)/POLH2
+ ELSEIF(MSTP(146).EQ.4) THEN
+C...Collins Soper frame
+ POLH1=AQ2-BQ2
+ POLH2=SQRT(VINT(2)*POLH1)
+ AZ=-BQ/POLH2
+ BZ=AQ/POLH2
+ AX=-SQMQQR*AQ/SQRT(POLH1*(POLH1-SMQQ2))
+ BX=SQMQQR*BQ/SQRT(POLH1*(POLH1-SMQQ2))
+ ENDIF
+C...Contract EL1(lam) EL2(lam') with K1 and K2 (initial parton momenta)
+ EL1K10=AZ*ATILK1+BZ*BTILK1
+ EL1K20=AZ*ATILK2+BZ*BTILK2
+ EL2K10=EL1K10
+ EL2K20=EL1K20
+ EL1K11=1D0/SQRT(2D0)*(AX*ATILK1+BX*BTILK1)
+ EL1K21=1D0/SQRT(2D0)*(AX*ATILK2+BX*BTILK2)
+ EL2K11=EL1K11
+ EL2K21=EL1K21
+ ENDIF
+
+ IF(ISUB.EQ.421) THEN
+C...g + g -> QQ~[3S11] + g
+ IF(MSTP(145).EQ.0) THEN
+* FACQQG=COMFAC*PARU(1)*AS**3*(10D0/81D0)*SQMQQR*
+* & (SH2*THUH2+TH2*UHSH2+UH2*SHTH2)/(SHTH2*THUH2*UHSH2)
+ FACQQG=COMFAC*PARU(1)*AS**3*(10D0/81D0)*SQMQQR*
+ & (SH2*THUH2+TH2*UHSH2+UH2*SHTH2)/SHTH2/THUH2/UHSH2
+* FACQQG=COMFAC*PARU(1)*AS**3*(10D0/81D0)*SQMQQR*
+* & (SH2/(SHTH2*UHSH2)+TH2/(SHTH2*THUH2)+UH2/(THUH2*UHSH2))
+ ELSE
+ FF=-PARU(1)*AS**3*(10D0/81D0)*SQMQQR/THUH2/SHTH2/UHSH2
+ AA=(SHTH2*UH2+UHSH2*TH2+THUH2*SH2)/2D0
+ BB=2D0*(SH2+TH2)
+ CC=2D0*(SH2+UH2)
+ DD=2D0*SH2
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11)))
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K10+CC*EL1K21*EL2K20
+ & +DD*(EL1K11*EL2K20+EL1K21*EL2K10))
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+1)
+ ENDIF
+
+ ELSEIF(ISUB.EQ.422) THEN
+C...g + g -> QQ~[3S18] + g
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=-COMFAC*PARU(1)*AS**3*(1D0/72D0)*
+ & (16D0*SQMQQ**2-27D0*(SHTH2+THUH2+UHSH2))/
+ & (SQMQQ*SQMQQR)*
+ & ((SH2*THUH2+TH2*UHSH2+UH2*SHTH2)/SHTH2/THUH2/UHSH2)
+ ELSE
+ FF=PARU(1)*AS**3*(16D0*SQMQQ**2-27D0*(SHTH2+THUH2+UHSH2))/
+ & (72D0*SQMQQ*SQMQQR*SHTH2*THUH2*UHSH2)
+ AA=(SHTH2*UH2+UHSH2*TH2+THUH2*SH2)/2D0
+ BB=2D0*(SH2+TH2)
+ CC=2D0*(SH2+UH2)
+ DD=2D0*SH2
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11)))
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K10+CC*EL1K21*EL2K20
+ & +DD*(EL1K11*EL2K20+EL1K21*EL2K10))
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in g g -> g g (recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACGG1=(SH/THP)**2+2D0*SH/THP+3D0+2D0*THP/SH+(THP/SH)**2
+ FACGG2=(UHP/SH)**2+2D0*UHP/SH+3D0+2D0*SH/UHP+(SH/UHP)**2
+ FACGG3=(THP/UHP)**2+2D0*THP/UHP+3D0+2D0*UHP/THP+(UHP/THP)**2
+ FACGGS=FACGG1+FACGG2+FACGG3
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+2)*FACGG1/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+2)*FACGG2/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=3
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+2)*FACGG3/FACGGS
+ ENDIF
+
+ ELSEIF(ISUB.EQ.423) THEN
+C...g + g -> QQ~[1S08] + g
+ IF(MSTP(145).EQ.0) THEN
+* FACQQG=COMFAC*PARU(1)*AS**3*(5D0/16D0)*
+* & (SHTH2*UH2+THUH2*SH2+UHSH2*TH2)/(SQMQQR*SH*TH*UH)*
+* & (12D0*SQMQQ*SH*TH*UH+SHTH2**2+THUH2**2+UHSH2**2)/
+* & (SHTH2*THUH2*UHSH2)
+ FACQQG=COMFAC*PARU(1)*AS**3*(5D0/16D0)*SQMQQR*
+ & (UH2/(THUH2*UHSH2)+SH2/(SHTH2*UHSH2)+
+ & TH2/(SHTH2*THUH2))*
+ & (12D0+(SHTH2**2+THUH2**2+UHSH2**2)/(SQMQQ*SH*TH*UH))
+ ELSE
+ FA=PARU(1)*AS**3*(5D0/48D0)*SQMQQR*
+ & (UH2/(THUH2*UHSH2)+SH2/(SHTH2*UHSH2)+
+ & TH2/(SHTH2*THUH2))*
+ & (12D0+(SHTH2**2+THUH2**2+UHSH2**2)/(SQMQQ*SH*TH*UH))
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=COMFAC*2D0*FA
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=0D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=0D0
+ ENDIF
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in g g -> g g (recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACGG1=(SH/THP)**2+2D0*SH/THP+3D0+2D0*THP/SH+(THP/SH)**2
+ FACGG2=(UHP/SH)**2+2D0*UHP/SH+3D0+2D0*SH/UHP+(SH/UHP)**2
+ FACGG3=(THP/UHP)**2+2D0*THP/UHP+3D0+2D0*UHP/THP+(UHP/THP)**2
+ FACGGS=FACGG1+FACGG2+FACGG3
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+3)*FACGG1/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+3)*FACGG2/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=3
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+3)*FACGG3/FACGGS
+ ENDIF
+
+ ELSEIF(ISUB.EQ.424) THEN
+C...g + g -> QQ~[3PJ8] + g
+ POLY=SH2+SH*TH+TH2
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*5D0*PARU(1)*AS**3*(3D0*SH*TH*SHTH*POLY**4
+ & -SQMQQ*POLY**2*(7D0*SH**6+36D0*SH**5*TH+45D0*SH**4*TH2
+ & +28D0*SH**3*TH**3+45D0*SH2*TH**4+36D0*SH*TH**5
+ & +7D0*TH**6)
+ & +SQMQQ**2*SHTH*(35D0*SH**8+169D0*SH**7*TH
+ & +299D0*SH**6*TH2+401D0*SH**5*TH**3+418D0*SH**4*TH**4
+ & +401D0*SH**3*TH**5+299D0*SH2*TH**6+169D0*SH*TH**7
+ & +35D0*TH**8)
+ & -SQMQQ**3*(84D0*SH**8+432D0*SH**7*TH+905D0*SH**6*TH2
+ & +1287D0*SH**5*TH**3+1436D0*SH**4*TH**4
+ & +1287D0*SH**3*TH**5+905D0*SH2*TH**6+432D0*SH*TH**7
+ & +84D0*TH**8)
+ & +SQMQQ**4*SHTH*(126D0*SH**6+451D0*SH**5*TH
+ & +677D0*SH**4*TH2+836D0*SH**3*TH**3+677D0*SH2*TH**4
+ & +451D0*SH*TH**5+126D0*TH**6)
+ & -3D0*SQMQQ**5*(42D0*SH**6+171D0*SH**5*TH
+ & +304D0*SH**4*TH2+362D0*SH**3*TH**3+304D0*SH2*TH**4
+ & +171D0*SH*TH**5+42D0*TH**6)
+ & +2D0*SQMQQ**6*SHTH*(42D0*SH**4+106D0*SH**3*TH
+ & +119D0*SH2*TH2+106D0*SH*TH**3+42D0*TH**4)
+ & -SQMQQ**7*(35D0*SH**4+99D0*SH**3*TH+120D0*SH2*TH2
+ & +99D0*SH*TH**3+35D0*TH**4)
+ & +7D0*SQMQQ**8*SHTH*POLY)/
+ & (SH*TH*UH*SQMQQR*SQMQQ*
+ & SHTH*SHTH2*THUH*THUH2*UHSH*UHSH2)
+ ELSE
+ FF=-5D0*PARU(1)*AS**3/(SH2*TH2*UH2
+ & *SQMQQR*SQMQQ*SHTH*SHTH2*THUH*THUH2*UHSH*UHSH2)
+ AA=SH*TH*UH*(SH*TH*SHTH*POLY**4
+ & -SQMQQ*SHTH2*POLY**2*
+ & (SH**4+6D0*SH**3*TH-6D0*SH2*TH2+6D0*SH*TH**3+TH**4)
+ & +SQMQQ**2*SHTH*(5D0*SH**8+35D0*SH**7*TH+49D0*SH**6*TH2
+ & +57D0*SH**5*TH**3+46D0*SH**4*TH**4+57D0*SH**3*TH**5
+ & +49D0*SH2*TH**6+35D0*SH*TH**7+5D0*TH**8)
+ & -SQMQQ**3*(16D0*SH**8+104D0*SH**7*TH+215D0*SH**6*TH2
+ & +291D0*SH**5*TH**3+316D0*SH**4*TH**4+291D0*SH**3*TH**5
+ & +215D0*SH2*TH**6+104D0*SH*TH**7+16D0*TH**8)
+ & +SQMQQ**4*SHTH*(34D0*SH**6+145D0*SH**5*TH
+ & +211D0*SH**4*TH2+262D0*SH**3*TH**3+211D0*SH2*TH**4
+ & +145D0*SH*TH**5+34D0*TH**6)
+ & -SQMQQ**5*(44D0*SH**6+193D0*SH**5*TH+346D0*SH**4*TH2
+ & +410D0*SH**3*TH**3+346D0*SH2*TH**4+193D0*SH*TH**5
+ & +44D0*TH**6)
+ & +2D0*SQMQQ**6*SHTH*(17D0*SH**4+45D0*SH**3*TH
+ & +49D0*SH2*TH2+45D0*SH*TH**3+17D0*TH**4)
+ & -SQMQQ**7*(3D0*SH2+2D0*SH*TH+3D0*TH2)
+ & *(5D0*SH2+11D0*SH*TH+5D0*TH2)
+ & +3D0*SQMQQ**8*SHTH*POLY)
+ BB=4D0*SHTH2*POLY**3
+ & *(SH**4+SH**3*TH-SH2*TH2+SH*TH**3+TH**4)
+ & -SQMQQ*SHTH*(20D0*SH**10+84D0*SH**9*TH+166D0*SH**8*TH2
+ & +231D0*SH**7*TH**3+250D0*SH**6*TH**4+250D0*SH**5*TH**5
+ & +250D0*SH**4*TH**6+231D0*SH**3*TH**7+166D0*SH2*TH**8
+ & +84D0*SH*TH**9+20D0*TH**10)
+ & +SQMQQ**2*SHTH2*(40D0*SH**8+86D0*SH**7*TH
+ & +66D0*SH**6*TH2+67D0*SH**5*TH**3+6D0*SH**4*TH**4
+ & +67D0*SH**3*TH**5+66D0*SH2*TH**6+86D0*SH*TH**7
+ & +40D0*TH**8)
+ & -SQMQQ**3*SHTH*(40D0*SH**8+57D0*SH**7*TH
+ & -110D0*SH**6*TH2-263D0*SH**5*TH**3-384D0*SH**4*TH**4
+ & -263D0*SH**3*TH**5-110D0*SH2*TH**6+57D0*SH*TH**7
+ & +40D0*TH**8)
+ & +SQMQQ**4*(20D0*SH**8-33D0*SH**7*TH-368D0*SH**6*TH2
+ & -751D0*SH**5*TH**3-920D0*SH**4*TH**4-751D0*SH**3*TH**5
+ & -368D0*SH2*TH**6-33D0*SH*TH**7+20D0*TH**8)
+ & -SQMQQ**5*SHTH*(4D0*SH**6-81D0*SH**5*TH-242D0*SH**4*TH2
+ & -250D0*SH**3*TH**3-242D0*SH2*TH**4-81D0*SH*TH**5
+ & +4D0*TH**6)
+ & -SQMQQ**6*SH*TH*(41D0*SH**4+120D0*SH**3*TH
+ & +142D0*SH2*TH2+120D0*SH*TH**3+41D0*TH**4)
+ & +8D0*SQMQQ**7*SH*TH*SHTH*POLY
+ CC=4D0*TH2*POLY**3
+ & *(-SH**4-2D0*SH**3*TH+2D0*SH2*TH2+3D0*SH*TH**3+TH**4)
+ & -SQMQQ*TH2*(-20D0*SH**9-56D0*SH**8*TH-24D0*SH**7*TH2
+ & +147D0*SH**6*TH**3+409D0*SH**5*TH**4+599D0*SH**4*TH**5
+ & +571D0*SH**3*TH**6+370D0*SH2*TH**7+148D0*SH*TH**8
+ & +28D0*TH**9)
+ & +SQMQQ**2*(4D0*SH**10+20D0*SH**9*TH-16D0*SH**8*TH2
+ & -48D0*SH**7*TH**3+150D0*SH**6*TH**4+611D0*SH**5*TH**5
+ & +1060D0*SH**4*TH**6+1155D0*SH**3*TH**7+854D0*SH2*TH**8
+ & +394D0*SH*TH**9+84D0*TH**10)
+ & -SQMQQ**3*SHTH*(20D0*SH**8+68D0*SH**7*TH-20D0*SH**6*TH2
+ & +32D0*SH**5*TH**3+286D0*SH**4*TH**4+577D0*SH**3*TH**5
+ & +618D0*SH2*TH**6+443D0*SH*TH**7+140D0*TH**8)
+ & +SQMQQ**4*(40D0*SH**8+152D0*SH**7*TH+94D0*SH**6*TH2
+ & +38D0*SH**5*TH**3+290D0*SH**4*TH**4+631D0*SH**3*TH**5
+ & +738D0*SH2*TH**6+513D0*SH*TH**7+140D0*TH**8)
+ & -SQMQQ**5*(40D0*SH**7+129D0*SH**6*TH+53D0*SH**5*TH2
+ & +7D0*SH**4*TH**3+129D0*SH**3*TH**4+264D0*SH2*TH**5
+ & +266D0*SH*TH**6+84D0*TH**7)
+ & +SQMQQ**6*(20D0*SH**6+55D0*SH**5*TH+2D0*SH**4*TH2
+ & -15D0*SH**3*TH**3+30D0*SH2*TH**4+76D0*SH*TH**5
+ & +28D0*TH**6)
+ & -SQMQQ**7*SHTH*(4D0*SH**4+7D0*SH**3*TH-14D0*SH2*TH2
+ & +7D0*SH*TH**3+4*TH**4)
+ & +SQMQQ**8*SH*(SH-TH)**2*TH
+ DD=2D0*TH2*SHTH2*POLY**3
+ & *(-SH2+2*SH*TH+2*TH2)
+ & +SQMQQ*(4D0*SH**11+22D0*SH**10*TH+70D0*SH**9*TH2
+ & +115D0*SH**8*TH**3+71D0*SH**7*TH**4-119D0*SH**6*TH**5
+ & -381D0*SH**5*TH**6-552D0*SH**4*TH**7-512D0*SH**3*TH**8
+ & -320D0*SH2*TH**9-126D0*SH*TH**10-24D0*TH**11)
+ & -SQMQQ**2*SHTH*(20D0*SH**9+84D0*SH**8*TH
+ & +212D0*SH**7*TH2+247D0*SH**6*TH**3+105D0*SH**5*TH**4
+ & -178D0*SH**4*TH**5-380D0*SH**3*TH**6-364D0*SH2*TH**7
+ & -210D0*SH*TH**8-60D0*TH**9)
+ & +SQMQQ**3*SHTH*(40D0*SH**8+159D0*SH**7*TH
+ & +374D0*SH**6*TH2+404D0*SH**5*TH**3+192D0*SH**4*TH**4
+ & -141D0*SH**3*TH**5-264D0*SH2*TH**6-216D0*SH*TH**7
+ & -80D0*TH**8)
+ & -SQMQQ**4*(40D0*SH**8+197D0*SH**7*TH+506D0*SH**6*TH2
+ & +672D0*SH**5*TH**3+460D0*SH**4*TH**4+79D0*SH**3*TH**5
+ & -138D0*SH2*TH**6-164D0*SH*TH**7-60D0*TH**8)
+ & +SQMQQ**5*(20D0*SH**7+107D0*SH**6*TH+267D0*SH**5*TH2
+ & +307D0*SH**4*TH**3+185D0*SH**3*TH**4+56D0*SH2*TH**5
+ & -30D0*SH*TH**6-24D0*TH**7)
+ & -SQMQQ**6*(4D0*SH**6+31D0*SH**5*TH+74D0*SH**4*TH2
+ & +71D0*SH**3*TH**3+46D0*SH2*TH**4+10D0*SH*TH**5
+ & -4D0*TH**6)
+ & +4D0*SQMQQ**7*SH*TH*SHTH*POLY
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11)))
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K10+CC*EL1K21*EL2K20
+ & +DD*(EL1K11*EL2K20+EL1K21*EL2K10))
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in g g -> g g (recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACGG1=(SH/THP)**2+2D0*SH/THP+3D0+2D0*THP/SH+(THP/SH)**2
+ FACGG2=(UHP/SH)**2+2D0*UHP/SH+3D0+2D0*SH/UHP+(SH/UHP)**2
+ FACGG3=(THP/UHP)**2+2D0*THP/UHP+3D0+2D0*UHP/THP+(UHP/THP)**2
+ FACGGS=FACGG1+FACGG2+FACGG3
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+4)*FACGG1/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+4)*FACGG2/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=3
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+4)*FACGG3/FACGGS
+ ENDIF
+
+ ELSEIF(ISUB.EQ.425) THEN
+C...q + g -> q + QQ~[3S18]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=-COMFAC*PARU(1)*AS**3*(1D0/27D0)*
+ & (4D0*(SH2+UH2)-SH*UH)*(SHTH2+THUH2)/
+ & (SQMQQ*SQMQQR*SH*UH*UHSH2)
+ ELSE
+ FF=PARU(1)*AS**3*(4D0*(SH2+UH2)-SH*UH)/
+ & (54D0*SQMQQ*SQMQQR*SH*UH*UHSH2)
+ AA=SHTH2+THUH2
+ BB=4D0
+ CC=8D0
+ DD=4D0
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11)))
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K10+CC*EL1K21*EL2K20
+ & +DD*(EL1K11*EL2K20+EL1K21*EL2K10))
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in ISUB.EQ.28 [f + g -> f + g (q + g -> q + g only)]
+C...(recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACQG1=9D0/4D0*(UHP/THP)**2-UHP/SH
+ FACQG2=9D0/4D0*(SH/THP)**2-SH/UHP
+ FACQGS=FACQG1+FACQG2
+ DO 2442 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 2442
+ DO 2441 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 2441
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 2441
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+2)*FACQG1/FACQGS
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+2)*FACQG2/FACQGS
+ 2441 CONTINUE
+ 2442 CONTINUE
+
+ ELSEIF(ISUB.EQ.426) THEN
+C...q + g -> q + QQ~[1S08]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=-COMFAC*PARU(1)*AS**3*(5D0/18D0)*
+ & (SH2+UH2)/(SQMQQR*TH*UHSH2)
+ ELSE
+ FA=-PARU(1)*AS**3*(5D0/54D0)*(SH2+UH2)/(SQMQQR*TH*UHSH2)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=COMFAC*2D0*FA
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=0D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=0D0
+ ENDIF
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in ISUB.EQ.28 [f + g -> f + g (q + g -> q + g only)]
+C...(recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACQG1=9D0/4D0*(UHP/THP)**2-UHP/SH
+ FACQG2=9D0/4D0*(SH/THP)**2-SH/UHP
+ FACQGS=FACQG1+FACQG2
+ DO 2444 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 2444
+ DO 2443 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 2443
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 2443
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+3)*FACQG1/FACQGS
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+3)*FACQG2/FACQGS
+ 2443 CONTINUE
+ 2444 CONTINUE
+
+ ELSEIF(ISUB.EQ.427) THEN
+C...q + g -> q + QQ~[3PJ8]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=-COMFAC*PARU(1)*AS**3*(10D0/9D0)*
+ & ((7D0*UHSH+8D0*TH)*(SH2+UH2)
+ & +4D0*TH*(2D0*SQMQQ**2-SHTH2-THUH2))/
+ & (SQMQQ*SQMQQR*TH*UHSH2*UHSH)
+ ELSE
+ FF=10D0*PARU(1)*AS**3/
+ & (9D0*SQMQQ*SQMQQR*TH2*UHSH2*UHSH)
+ AA=TH*UHSH*(2D0*SQMQQ**2+SHTH2+THUH2)
+ BB=8D0*(SHTH2+TH*UH)
+ CC=8D0*UHSH*(SHTH+THUH)
+ DD=4D0*(2D0*SQMQQ*SH+TH*UHSH)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11)))
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K10+CC*EL1K21*EL2K20
+ & +DD*(EL1K11*EL2K20+EL1K21*EL2K10))
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in ISUB.EQ.28 [f + g -> f + g (q + g -> q + g only)]
+C...(recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACQG1=9D0/4D0*(UHP/THP)**2-UHP/SH
+ FACQG2=9D0/4D0*(SH/THP)**2-SH/UHP
+ FACQGS=FACQG1+FACQG2
+ DO 2446 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 2446
+ DO 2445 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 2445
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 2445
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+4)*FACQG1/FACQGS
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+4)*FACQG2/FACQGS
+ 2445 CONTINUE
+ 2446 CONTINUE
+
+ ELSEIF(ISUB.EQ.428) THEN
+C...q + q~ -> g + QQ~[3S18]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*(8D0/81D0)*
+ & (4D0*(TH2+UH2)-TH*UH)*(SHTH2+UHSH2)/
+ & (SQMQQ*SQMQQR*TH*UH*THUH2)
+ ELSE
+ FF=-4D0*PARU(1)*AS**3*(4D0*(TH2+UH2)-TH*UH)/
+ & (81D0*SQMQQ*SQMQQR*TH*UH*THUH2)
+ AA=SHTH2+UHSH2
+ BB=4D0
+ CC=4D0
+ DD=0D0
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11)))
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K10+CC*EL1K21*EL2K20
+ & +DD*(EL1K11*EL2K20+EL1K21*EL2K10))
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in ISUB.EQ.13 [f + fbar -> g + g (q + qbar -> g + g only)]
+C...(recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACGG1=UH/TH-9D0/4D0*UH2/SH2
+ FACGG2=TH/UH-9D0/4D0*TH2/SH2
+ FACGGS=FACGG1+FACGG2
+ DO 2447 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 2447
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+2)*FACGG1/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+2)*FACGG2/FACGGS
+ 2447 CONTINUE
+
+ ELSEIF(ISUB.EQ.429) THEN
+C...q + q~ -> g + QQ~[1S08]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*(20D0/27D0)*
+ & (TH2+UH2)/(SQMQQR*SH*THUH2)
+ ELSE
+ FA=PARU(1)*AS**3*(20D0/81D0)*(TH2+UH2)/(SQMQQR*SH*THUH2)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=COMFAC*2D0*FA
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=0D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=0D0
+ ENDIF
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in ISUB.EQ.13 [f + fbar -> g + g (q + qbar -> g + g only)]
+C...(recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACGG1=UH/TH-9D0/4D0*UH2/SH2
+ FACGG2=TH/UH-9D0/4D0*TH2/SH2
+ FACGGS=FACGG1+FACGG2
+ DO 2448 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 2448
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+3)*FACGG1/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+3)*FACGG2/FACGGS
+ 2448 CONTINUE
+
+ ELSEIF(ISUB.EQ.430) THEN
+C...q + q~ -> g + QQ~[3PJ8]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*(80D0/27D0)*
+ & ((7D0*THUH+8D0*SH)*(TH2+UH2)
+ & +4D0*SH*(2D0*SQMQQ**2-SHTH2-UHSH2))/
+ & (SQMQQ*SQMQQR*SH*THUH2*THUH)
+ ELSE
+ FF=-80D0*PARU(1)*AS**3/(27D0*SQMQQ*SQMQQR*SH2*THUH2*THUH)
+ AA=SH*THUH*(2D0*SQMQQ**2+SHTH2+UHSH2)
+ BB=8D0*(UHSH2+SH*TH)
+ CC=8D0*(SHTH2+SH*UH)
+ DD=4D0*(SHTH2+UHSH2+SH*SQMQQ-SQMQQ**2)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11)))
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K10*EL2K10+CC*EL1K20*EL2K20
+ & +DD*(EL1K10*EL2K20+EL1K20*EL2K10))
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-AA+SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K10+CC*EL1K21*EL2K20
+ & +DD*(EL1K11*EL2K20+EL1K21*EL2K10))
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=SQMQQ*(BB*EL1K11*EL2K11+CC*EL1K21*EL2K21
+ & +DD*(EL1K11*EL2K21+EL1K21*EL2K11))
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+C...Split total contribution into different colour flows just like
+C...in ISUB.EQ.13 [f + fbar -> g + g (q + qbar -> g + g only)]
+C...(recalculate kinematics for massless partons).
+ THP=-0.5D0*SH*(1D0-CTH)
+ UHP=-0.5D0*SH*(1D0+CTH)
+ FACGG1=UH/TH-9D0/4D0*UH2/SH2
+ FACGG2=TH/UH-9D0/4D0*TH2/SH2
+ FACGGS=FACGG1+FACGG2
+ DO 2449 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 2449
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+4)*FACGG1/FACGGS
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+4)*FACGG2/FACGGS
+ 2449 CONTINUE
+
+ ELSEIF(ISUB.EQ.431) THEN
+C...g + g -> QQ~[3P01] + g
+ PGTW=(SH*TH+TH*UH+UH*SH)/SH2
+ QGTW=(SH*TH*UH)/SH**3
+ RGTW=SQMQQ/SH
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*8D0/(9D0*SQMQQR*SH)*
+ & (9D0*RGTW**2*PGTW**4*
+ & (RGTW**4-2D0*RGTW**2*PGTW+PGTW**2)
+ & -6D0*RGTW*PGTW**3*QGTW*
+ & (2D0*RGTW**4-5D0*RGTW**2*PGTW+PGTW**2)
+ & -PGTW**2*QGTW**2*(RGTW**4+2D0*RGTW**2*PGTW-PGTW**2)
+ & +2D0*RGTW*PGTW*QGTW**3*(RGTW**2-PGTW)
+ & +6D0*RGTW**2*QGTW**4)/(QGTW*(QGTW-RGTW*PGTW)**4)
+ ELSE
+ FC1=PARU(1)*AS**3*8D0/(27D0*SQMQQR*SH)*
+ & (9D0*RGTW**2*PGTW**4*
+ & (RGTW**4-2D0*RGTW**2*PGTW+PGTW**2)
+ & -6D0*RGTW*PGTW**3*QGTW*
+ & (2D0*RGTW**4-5D0*RGTW**2*PGTW+PGTW**2)
+ & -PGTW**2*QGTW**2*(RGTW**4+2D0*RGTW**2*PGTW-PGTW**2)
+ & +2D0*RGTW*PGTW*QGTW**3*(RGTW**2-PGTW)
+ & +6D0*RGTW**2*QGTW**4)/(QGTW*(QGTW-RGTW*PGTW)**4)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=COMFAC*FC1
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=COMFAC*2D0*FC1
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=COMFAC*FC1
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=COMFAC*FC1
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=0D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=0D0
+ ENDIF
+ ENDIF
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ ENDIF
+
+ ELSEIF(ISUB.EQ.432) THEN
+C...g + g -> QQ~[3P11] + g
+ PGTW=(SH*TH+TH*UH+UH*SH)/SH2
+ QGTW=(SH*TH*UH)/SH**3
+ RGTW=SQMQQ/SH
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*8D0/(3D0*SQMQQR*SH)*
+ & PGTW**2*(RGTW*PGTW**2*(RGTW**2-4D0*PGTW)
+ & +2D0*QGTW*(-RGTW**4+5D0*RGTW**2*PGTW+PGTW**2)
+ & -15D0*RGTW*QGTW**2)/(QGTW-RGTW*PGTW)**4
+ ELSE
+ FF=4D0/3D0*PARU(1)*AS**3*SQMQQR/SHTH2**2/THUH2**2/UHSH2**2
+ C1=(4D0*PGTW**5+23D0*PGTW**2*QGTW**2
+ & +(-14D0*PGTW**3*QGTW+3D0*QGTW**3)*RGTW
+ & -(PGTW**4+2D0*PGTW*QGTW**2)*RGTW**2
+ & +3D0*PGTW**2*QGTW*RGTW**3)*SH2**5
+ C2=2D0*SHTH2*(SH2*THUH*(SH*THUH*(SH-TH)*(SH-UH)
+ & -TH*UH*(TH-UH)**2)+SH2**2*(TH-UH)*(TH2+UH2-SH*THUH)
+ & *(PGTW**2-QGTW*(SH+2D0*UH)/SH))
+ C3=2D0*UHSH2*(SH2*THUH*(SH*THUH*(SH-TH)*(SH-UH)
+ & -TH*UH*(TH-UH)**2)-SH2**2*(TH-UH)*(TH2+UH2-SH*THUH)
+ & *(PGTW**2-QGTW*(SH+2D0*TH)/SH))
+ C4=-4D0*THUH*(TH-UH)**2*
+ & (TH**3*UH**3+SH2**2*(2D0*TH+UH)*(TH+2D0*UH)
+ & -SH2*TH*UH*(TH2+UH2))
+ & +4D0*THUH2*(SH**3*(SH2**2+TH2**2+UH2**2)
+ & -SH*TH*UH*(SH2**2+TH*UH*(TH2-3D0*TH*UH+UH2)
+ & +SH2*(5D0*THUH2-17D0*TH*UH)))
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-C1+C2*EL1K10*EL2K10+C3*EL1K20*EL2K20
+ & +C4*(EL1K10*EL2K20+EL1K20*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-C1+C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0)
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-C1+C2*EL1K10*EL2K10+C3*EL1K20*EL2K20
+ & +C4*(EL1K10*EL2K20+EL1K20*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-C1+C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=C2*EL1K11*EL2K10+C3*EL1K21*EL2K20
+ & +C4*(EL1K11*EL2K20+EL1K21*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ ENDIF
+
+ ELSEIF(ISUB.EQ.433) THEN
+C...g + g -> QQ~[3P21] + g
+ PGTW=(SH*TH+TH*UH+UH*SH)/SH2
+ QGTW=(SH*TH*UH)/SH**3
+ RGTW=SQMQQ/SH
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*8D0/(9D0*SQMQQR*SH)*
+ & (12D0*RGTW**2*PGTW**4*
+ & (RGTW**4-2D0*RGTW**2*PGTW+PGTW**2)
+ & -3D0*RGTW*PGTW**3*QGTW*
+ & (8D0*RGTW**4-RGTW**2*PGTW+4D0*PGTW**2)
+ & +2D0*PGTW**2*QGTW**2*
+ & (-7D0*RGTW**4+43D0*RGTW**2*PGTW+PGTW**2)
+ & +RGTW*PGTW*QGTW**3*(16D0*RGTW**2-61D0*PGTW)
+ & +12D0*RGTW**2*QGTW**4)/(QGTW*(QGTW-RGTW*PGTW)**4)
+ ELSE
+ FF=(16D0*PARU(1)*AS**3*SQMQQ*SQMQQR)/
+ & (3D0*SH2*TH2*UH2*SHTH2**2*THUH2**2*UHSH2**2)
+ C1=PGTW**2*QGTW*(PGTW*RGTW-QGTW)**2*(RGTW**2-2D0*PGTW)
+ & *SH*SH2**7
+ C2=2D0*SHTH2*(-SH2**3*TH2**3-SH**5*TH**5*UH*SHTH
+ & +SH2**2*TH2**2*UH2*(8D0*SHTH2-5D0*SH*TH)
+ & +SH**3*TH**3*UH**3*SHTH*(17D0*SHTH2-2D0*SH*TH)
+ & +SH2*TH2*UH2**2*(105D0*SH2*TH2+64D0*SH*TH*(SH2+TH2)
+ & +10D0*(SH2**2+TH2**2))
+ & +SH2*TH2*UH**5*SHTH*(32D0*SHTH2+7D0*SH*TH)
+ & -UH2**3*(SH2**3-87D0*SH**3*TH**3+TH2**3
+ & -45D0*SH2*TH2*(SH2+TH2)-5D0*SH*TH*(SH2**2+TH2**2))
+ & +SH*TH*UH**7*SHTH*(7D0*SHTH2+12D0*SH*TH)
+ & +4D0*SH*TH*UH2**4*SHTH2)
+ C3=2D0*UHSH2*(-SH2**3*UH2**3-SH**5*UH**5*TH*UHSH
+ & +SH2**2*UH2**2*TH2*(8D0*UHSH2-5D0*SH*UH)
+ & +SH**3*UH**3*TH**3*UHSH*(17D0*UHSH2-2D0*SH*UH)
+ & +SH2*UH2*TH2**2*(105D0*SH2*UH2+64D0*SH*UH*(SH2+UH2)
+ & +10D0*(SH2**2+UH2**2))
+ & +SH2*UH2*TH**5*UHSH*(32D0*UHSH2+7D0*SH*UH)
+ & -TH2**3*(SH2**3-87D0*SH**3*UH**3+UH2**3
+ & -45D0*SH2*UH2*(SH2+UH2)-5D0*SH*UH*(SH2**2+UH2**2))
+ & +SH*UH*TH**7*UHSH*(7D0*UHSH2+12D0*SH*UH)
+ & +4D0*SH*UH*TH2**4*UHSH2)
+ C4=-2D0*SHTH*UHSH*(-2D0*TH2**3*UH2**3
+ & -SH**5*TH2*UH2*THUH*(5D0*TH+3D0*UH)*(3D0*TH+5D0*UH)
+ & +SH2**3*(2D0*TH+UH)*(TH+2D0*UH)*(TH2-UH2)**2
+ & -SH*TH2**2*UH2**2*THUH*(5D0*THUH2-4D0*TH*UH)
+ & -SH2*TH**3*UH**3*THUH2*(13D0*THUH2-16D0*TH*UH)
+ & -SH**3*TH2*UH2*(92D0*TH2*UH2*THUH
+ & +53D0*TH*UH*(TH**3+UH**3)+11D0*(TH**5+UH**5))
+ & -SH2**2*TH*UH*(114D0*TH**3*UH**3
+ & +83D0*TH2*UH2*(TH2+UH2)+28D0*TH*UH*(TH2**2+UH2**2)
+ & +3D0*(TH2**3+UH2**3)))
+ C5=4D0*SH*TH*UH2*SHTH2*(2D0*SH*TH+SH*UH+TH*UH)**2
+ & *(2D0*UH*SQMQQ**2+SHTH*(SH*TH-UH2))
+ C6=4D0*SH*UH*TH2*UHSH2*(2D0*SH*UH+SH*TH+TH*UH)**2
+ & *(2D0*TH*SQMQQ**2+UHSH*(SH*UH-TH2))
+ C7=4D0*SH*TH*UH2*SHTH*(SH2**2*TH**3*(11D0*SH+16D0*TH)
+ & +SH**3*TH2*UH*(31D0*SH2+83D0*SH*TH+61D0*TH2)
+ & +SH2*TH*UH2*(19D0*SH**3+110D0*SH2*TH+156D0*SH*TH2+
+ & 82D0*TH**3)
+ & +SH*TH*UH**3*(43D0*SH**3+132D0*SH2*TH+124D0*SH*TH2
+ & +45D0*TH**3)
+ & +TH*UH2**2*(37D0*SH**3+68D0*SH2*TH+43D0*SH*TH2+
+ & 8D0*TH**3)
+ & +TH*UH**5*(11D0*SH2+13D0*SH*TH+5D0*TH2)
+ & +SH**3*UH**3*(3D0*UHSH2-2D0*SH*UH)
+ & +TH**5*UHSH*(5D0*UHSH2+2D0*SH*UH))
+ C8=4D0*SH*UH*TH2*UHSH*(SH2**2*UH**3*(11D0*SH+16D0*UH)
+ & +SH**3*UH2*TH*(31D0*SH2+83D0*SH*UH+61D0*UH2)
+ & +SH2*UH*TH2*(19D0*SH**3+110D0*SH2*UH+156D0*SH*UH2+
+ & 82D0*UH**3)
+ & +SH*UH*TH**3*(43D0*SH**3+132D0*SH2*UH+124D0*SH*UH2
+ & +45D0*UH**3)
+ & +UH*TH2**2*(37D0*SH**3+68D0*SH2*UH+43D0*SH*UH2+
+ & 8D0*UH**3)
+ & +UH*TH**5*(11D0*SH2+13D0*SH*UH+5D0*UH2)
+ & +SH**3*TH**3*(3D0*SHTH2-2D0*SH*TH)
+ & +UH**5*SHTH*(5D0*SHTH2+2D0*SH*TH))
+ C9=4D0*SHTH*UHSH*(2D0*TH**5*UH**5*THUH
+ & +4D0*SH*TH2**2*UH2**2*THUH2
+ & -SH2*TH**3*UH**3*THUH*(TH2+UH2)
+ & -2D0*SH**3*TH2*UH2*(THUH2**2+2D0*TH*UH*THUH2-TH2*UH2)
+ & +SH2**2*TH*UH*THUH*(-TH*UH*THUH2+3D0*(TH2**2+UH2**2))
+ & +SH**5*(4D0*TH2*UH2*(THUH2-TH*UH)
+ & +5D0*TH*UH*(TH2**2+UH2**2)+2D0*(TH2**3+UH2**3)))
+ C0=-4D0*(2D0*TH2**3*UH2**3*SQMQQ
+ & -SH2*TH2**2*UH2**2*THUH*(19D0*THUH2-4D0*TH*UH)
+ & -SH**3*TH**3*UH**3*THUH2*(32D0*THUH2+29D0*TH*UH)
+ & -SH2**2*TH2*UH2*THUH*(264D0*TH2*UH2
+ & +136D0*TH*UH*(TH2+UH2)+15D0*(TH2**2+UH2**2))
+ & +SH**5*TH*UH*(-428D0*TH**3*UH**3
+ & -256D0*TH2*UH2*(TH2+UH2)-43D0*TH*UH*(TH2**2+UH2**2)
+ & +2D0*(TH2**3+UH2**3))
+ & +SH**7*(-46D0*TH**3*UH**3-21D0*TH2*UH2*(TH2+UH2)
+ & +2D0*TH*UH*(TH2**2+UH2**2)+2D0*(TH2**3+UH2**3))
+ & +SH2**3*THUH*(-134*TH**3*UH**3-53D0*TH2*UH2*(TH2+UH2)
+ & +4D0*TH*UH*(TH2**2+UH2**2)+2D0*(TH2**3+UH2**3)))
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=1D0/3D0*(C1*3D0
+ & -C2*(2D0*EL1K10*EL2K10+EL1K11*EL2K11)
+ & -C3*(2D0*EL1K20*EL2K20+EL1K21*EL2K21)
+ & -C4*(2D0*EL1K10*EL2K20+EL1K11*EL2K21)
+ & +C5*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)**2
+ & +C6*2D0*(EL1K20*EL2K20-EL1K21*EL2K21)**2
+ & +C7*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)
+ & *(EL1K10*EL2K20-EL1K11*EL2K21)
+ & +C8*2D0*(EL1K20*EL2K20-EL1K21*EL2K21)
+ & *(EL1K10*EL2K20-EL1K11*EL2K21)
+ & +C9*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)
+ & *(EL1K20*EL2K20-EL1K21*EL2K21)
+ & +C0*2D0*(EL1K10*EL2K20-EL1K11*EL2K21)**2)
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=C1*2D0
+ & -C2*(EL1K10*EL2K10+EL1K11*EL2K11)
+ & -C3*(EL1K20*EL2K20+EL1K21*EL2K21)
+ & -C4*(EL1K10*EL2K20+EL1K11*EL2K21)
+ & +C5*4D0*EL1K10*EL2K10*EL1K11*EL2K11
+ & +C6*4D0*EL1K20*EL2K20*EL1K21*EL2K21
+ & +C7*2D0*(EL1K10*EL2K10*EL1K11*EL2K21
+ & +EL1K10*EL2K20*EL1K11*EL2K11)
+ & +C8*2D0*(EL1K20*EL2K20*EL1K11*EL2K21
+ & +EL1K10*EL2K20*EL1K21*EL2K21)
+ & +C9*4D0*EL1K10*EL2K20*EL1K11*EL2K21
+ & +C0*(EL1K10*EL2K10*EL1K21*EL2K21
+ & +2D0*EL1K10*EL2K20*EL1K11*EL2K21
+ & +EL1K20*EL2K20*EL1K11*EL2K11)
+ ELSEIF(MSTP(147).EQ.2) THEN
+ FACQQG=2D0*(C1
+ & -C2*EL1K11*EL2K11
+ & -C3*EL1K21*EL2K21
+ & -C4*EL1K11*EL2K21
+ & +C5*(EL1K11*EL2K11)**2
+ & +C6*(EL1K21*EL2K21)**2
+ & +C7*EL1K11*EL2K11*EL1K11*EL2K21
+ & +C8*EL1K21*EL2K21*EL1K11*EL2K21
+ & +(C9+C0)*(EL1K11*EL2K21)**2)
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ ENDIF
+
+ ELSEIF(ISUB.EQ.434) THEN
+C...q + g -> q + QQ~[3P01]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=-COMFAC*PARU(1)*AS**3*(16D0/81D0)*
+ & (TH-3D0*SQMQQ)**2*(SH2+UH2)/(SQMQQR*TH*UHSH2**2)
+ ELSE
+ FA=-PARU(1)*AS**3*(16D0/243D0)*
+ & (TH-3D0*SQMQQ)**2*(SH2+UH2)/(SQMQQR*TH*UHSH2**2)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=COMFAC*2D0*FA
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=0D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=0D0
+ ENDIF
+ ENDIF
+ DO 2452 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 2452
+ DO 2451 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 2451
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 2451
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ 2451 CONTINUE
+ 2452 CONTINUE
+
+ ELSEIF(ISUB.EQ.435) THEN
+C...q + g -> q + QQ~[3P11]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=-COMFAC*PARU(1)*AS**3*(32D0/27D0)*
+ & (4D0*SQMQQ*SH*UH+TH*(SH2+UH2))/(SQMQQR*UHSH2**2)
+ ELSE
+ FF=(64D0*PARU(1)*AS**3*SQMQQR)/(27D0*UHSH2**2)
+ C1=SH*UH
+ C2=2D0*SH
+ C3=0D0
+ C4=2D0*(SH-UH)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-C1+C2*EL1K10*EL2K10+C3*EL1K20*EL2K20
+ & +C4*(EL1K10*EL2K20+EL1K20*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-C1+C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0)
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-C1+C2*EL1K10*EL2K10+C3*EL1K20*EL2K20
+ & +C4*(EL1K10*EL2K20+EL1K20*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-C1+C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=C2*EL1K11*EL2K10+C3*EL1K21*EL2K20
+ & +C4*(EL1K11*EL2K20+EL1K21*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+ DO 2454 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 2454
+ DO 2453 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 2453
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 2453
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ 2453 CONTINUE
+ 2454 CONTINUE
+
+ ELSEIF(ISUB.EQ.436) THEN
+C...q + g -> q + QQ~[3P21]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=-COMFAC*PARU(1)*AS**3*(32D0/81D0)*
+ & ((6D0*SQMQQ**2+TH2)*UHSH2
+ & -2D0*SH*UH*(TH2+6D0*SQMQQ*UHSH))/
+ & (SQMQQR*TH*UHSH2**2)
+ ELSE
+ FF=-(32D0*PARU(1)*AS**3*SQMQQ*SQMQQR)/(27D0*TH2*UHSH2**2)
+ C1=TH*UHSH2
+ C2=4D0*(SH2+TH2+2D0*TH*UHSH)
+ C3=4D0*UHSH2
+ C4=8D0*SH*UHSH
+ C5=8D0*TH
+ C6=0D0
+ C7=16D0*TH
+ C8=0D0
+ C9=-16D0*UHSH
+ C0=16D0*SQMQQ
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=1D0/3D0*(C1*3D0
+ & -C2*(2D0*EL1K10*EL2K10+EL1K11*EL2K11)
+ & -C3*(2D0*EL1K20*EL2K20+EL1K21*EL2K21)
+ & -C4*(2D0*EL1K10*EL2K20+EL1K11*EL2K21)
+ & +C5*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)**2
+ & +C6*2D0*(EL1K20*EL2K20-EL1K21*EL2K21)**2
+ & +C7*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)
+ & *(EL1K10*EL2K20-EL1K11*EL2K21)
+ & +C8*2D0*(EL1K20*EL2K20-EL1K21*EL2K21)
+ & *(EL1K10*EL2K20-EL1K11*EL2K21)
+ & +C9*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)
+ & *(EL1K20*EL2K20-EL1K21*EL2K21)
+ & +C0*2D0*(EL1K10*EL2K20-EL1K11*EL2K21)**2)
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=C1*2D0
+ & -C2*(EL1K10*EL2K10+EL1K11*EL2K11)
+ & -C3*(EL1K20*EL2K20+EL1K21*EL2K21)
+ & -C4*(EL1K10*EL2K20+EL1K11*EL2K21)
+ & +C5*4D0*EL1K10*EL2K10*EL1K11*EL2K11
+ & +C6*4D0*EL1K20*EL2K20*EL1K21*EL2K21
+ & +C7*2D0*(EL1K10*EL2K10*EL1K11*EL2K21
+ & +EL1K10*EL2K20*EL1K11*EL2K11)
+ & +C8*2D0*(EL1K20*EL2K20*EL1K11*EL2K21
+ & +EL1K10*EL2K20*EL1K21*EL2K21)
+ & +C9*4D0*EL1K10*EL2K20*EL1K11*EL2K21
+ & +C0*(EL1K10*EL2K10*EL1K21*EL2K21
+ & +2D0*EL1K10*EL2K20*EL1K11*EL2K21
+ & +EL1K20*EL2K20*EL1K11*EL2K11)
+ ELSEIF(MSTP(147).EQ.2) THEN
+ FACQQG=2D0*(C1
+ & -C2*EL1K11*EL2K11
+ & -C3*EL1K21*EL2K21
+ & -C4*EL1K11*EL2K21
+ & +C5*(EL1K11*EL2K11)**2
+ & +C6*(EL1K21*EL2K21)**2
+ & +C7*EL1K11*EL2K11*EL1K11*EL2K21
+ & +C8*EL1K21*EL2K21*EL1K11*EL2K21
+ & +(C9+C0)*(EL1K11*EL2K21)**2)
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+ DO 2456 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 2456
+ DO 2455 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 2455
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 2455
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ 2455 CONTINUE
+ 2456 CONTINUE
+
+ ELSEIF(ISUB.EQ.437) THEN
+C...q + q~ -> g + QQ~[3P01]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*(128D0/243D0)*
+ & (SH-3D0*SQMQQ)**2*(TH2+UH2)/(SQMQQR*SH*THUH2**2)
+ ELSE
+ FA=PARU(1)*AS**3*(128D0/729D0)*
+ & (SH-3D0*SQMQQ)**2*(TH2+UH2)/(SQMQQR*SH*THUH2**2)
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=COMFAC*2D0*FA
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=COMFAC*FA
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=0D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=0D0
+ ENDIF
+ ENDIF
+ DO 2457 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 2457
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ 2457 CONTINUE
+
+ ELSEIF(ISUB.EQ.438) THEN
+C...q + q~ -> g + QQ~[3P11]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*256D0/81D0*
+ & (4D0*SQMQQ*TH*UH+SH*(TH2+UH2))/(SQMQQR*THUH2**2)
+ ELSE
+ FF=-(512D0*PARU(1)*AS**3*SQMQQR)/(81D0*THUH2**2)
+ C1=TH*UH
+ C2=2D0*UH
+ C3=2D0*TH
+ C4=2D0*THUH
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=-C1+C2*EL1K10*EL2K10+C3*EL1K20*EL2K20
+ & +C4*(EL1K10*EL2K20+EL1K20*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=2D0*(-C1+C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0)
+ ELSEIF(MSTP(147).EQ.3) THEN
+ FACQQG=-C1+C2*EL1K10*EL2K10+C3*EL1K20*EL2K20
+ & +C4*(EL1K10*EL2K20+EL1K20*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.4) THEN
+ FACQQG=-C1+C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0
+ ELSEIF(MSTP(147).EQ.5) THEN
+ FACQQG=C2*EL1K11*EL2K10+C3*EL1K21*EL2K20
+ & +C4*(EL1K11*EL2K20+EL1K21*EL2K10)/2D0
+ ELSEIF(MSTP(147).EQ.6) THEN
+ FACQQG=C2*EL1K11*EL2K11+C3*EL1K21*EL2K21
+ & +C4*(EL1K11*EL2K21+EL1K21*EL2K11)/2D0
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+ DO 2458 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 2458
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ 2458 CONTINUE
+
+ ELSEIF(ISUB.EQ.439) THEN
+C...q + q~ -> g + QQ~[3P21]
+ IF(MSTP(145).EQ.0) THEN
+ FACQQG=COMFAC*PARU(1)*AS**3*(256D0/243D0)*
+ & ((6D0*SQMQQ**2+SH2)*THUH2
+ & -2D0*TH*UH*(SH2+6D0*SQMQQ*THUH))/
+ & (SQMQQR*SH*THUH2**2)
+ ELSE
+ FF=(256D0*PARU(1)*AS**3*SQMQQ*SQMQQR)/(81D0*SH2*THUH2**2)
+ C1=SH*THUH2
+ C2=4D0*(SH2+UH2+2D0*SH*THUH)
+ C3=4D0*(SH2+TH2+2D0*SH*THUH)
+ C4=8D0*(SH2-TH*UH+2D0*SH*THUH)
+ C5=8D0*SH
+ C6=C5
+ C7=16D0*SH
+ C8=C7
+ C9=-16D0*THUH
+ C0=16D0*SQMQQ
+ IF(MSTP(147).EQ.0) THEN
+ FACQQG=1D0/3D0*(C1*3D0
+ & -C2*(2D0*EL1K10*EL2K10+EL1K11*EL2K11)
+ & -C3*(2D0*EL1K20*EL2K20+EL1K21*EL2K21)
+ & -C4*(2D0*EL1K10*EL2K20+EL1K11*EL2K21)
+ & +C5*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)**2
+ & +C6*2D0*(EL1K20*EL2K20-EL1K21*EL2K21)**2
+ & +C7*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)
+ & *(EL1K10*EL2K20-EL1K11*EL2K21)
+ & +C8*2D0*(EL1K20*EL2K20-EL1K21*EL2K21)
+ & *(EL1K10*EL2K20-EL1K11*EL2K21)
+ & +C9*2D0*(EL1K10*EL2K10-EL1K11*EL2K11)
+ & *(EL1K20*EL2K20-EL1K21*EL2K21)
+ & +C0*2D0*(EL1K10*EL2K20-EL1K11*EL2K21)**2)
+ ELSEIF(MSTP(147).EQ.1) THEN
+ FACQQG=C1*2D0
+ & -C2*(EL1K10*EL2K10+EL1K11*EL2K11)
+ & -C3*(EL1K20*EL2K20+EL1K21*EL2K21)
+ & -C4*(EL1K10*EL2K20+EL1K11*EL2K21)
+ & +C5*4D0*EL1K10*EL2K10*EL1K11*EL2K11
+ & +C6*4D0*EL1K20*EL2K20*EL1K21*EL2K21
+ & +C7*2D0*(EL1K10*EL2K10*EL1K11*EL2K21
+ & +EL1K10*EL2K20*EL1K11*EL2K11)
+ & +C8*2D0*(EL1K20*EL2K20*EL1K11*EL2K21
+ & +EL1K10*EL2K20*EL1K21*EL2K21)
+ & +C9*4D0*EL1K10*EL2K20*EL1K11*EL2K21
+ & +C0*(EL1K10*EL2K10*EL1K21*EL2K21
+ & +2D0*EL1K10*EL2K20*EL1K11*EL2K21
+ & +EL1K20*EL2K20*EL1K11*EL2K11)
+ ELSEIF(MSTP(147).EQ.2) THEN
+ FACQQG=2D0*(C1
+ & -C2*EL1K11*EL2K11
+ & -C3*EL1K21*EL2K21
+ & -C4*EL1K11*EL2K21
+ & +C5*(EL1K11*EL2K11)**2
+ & +C6*(EL1K21*EL2K21)**2
+ & +C7*EL1K11*EL2K11*EL1K11*EL2K21
+ & +C8*EL1K21*EL2K21*EL1K11*EL2K21
+ & +(C9+C0)*(EL1K11*EL2K21)**2)
+ ENDIF
+ FACQQG=COMFAC*FF*FACQQG
+ ENDIF
+ DO 2459 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 2459
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQG*PARP(IONIUM+5)
+ 2459 CONTINUE
+ ENDIF
+C...QUARKONIA---
+
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSGWZ
+C...Subprocess cross sections for W/Z processes,
+C...except that longitudinal WW scattering is in Higgs sector.
+C...Auxiliary to PYSIGH.
+
+ SUBROUTINE PYSGWZ(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT2/,/PYINT3/,/PYINT4/,/PYTCSM/,/PYSGCM/
+C...Local arrays and complex numbers
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5),HGZ(6,3),HL3(3),HR3(3),
+ &HL4(3),HR4(3)
+ COMPLEX*16 COULCK,COULCP,COULCD,COULCR,COULCS
+
+C...Differential cross section expressions.
+
+ IF(ISUB.LE.20) THEN
+ IF(ISUB.EQ.1) THEN
+C...f + fbar -> gamma*/Z0
+ MINT(61)=2
+ CALL PYWIDT(23,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACZ=4D0*COMFAC*3D0
+ HP0=AEM/3D0*SH
+ HP1=AEM/3D0*XWC*SH
+ DO 100 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 100
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ HI0=HP0
+ IF(IABS(I).LE.10) HI0=HI0*FACA/3D0
+ HI1=HP1
+ IF(IABS(I).LE.10) HI1=HI1*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZ*(EI**2/SH2*HI0*HP0*VINT(111)+
+ & EI*VI*(1D0-SQMZ/SH)/((SH-SQMZ)**2+HS**2)*
+ & (HI0*HP1+HI1*HP0)*VINT(112)+(VI**2+AI**2)/
+ & ((SH-SQMZ)**2+HS**2)*HI1*HP1*VINT(114))
+ 100 CONTINUE
+
+ ELSEIF(ISUB.EQ.2) THEN
+C...f + fbar' -> W+/-
+ CALL PYWIDT(24,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMW)**2+HS**2)*3D0
+ HP=AEM/(24D0*XW)*SH
+ DO 120 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 120
+ IA=IABS(I)
+ DO 110 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 110
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 110
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 110
+ KCHW=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ HI=HP*2D0
+ IF(IA.LE.10) HI=HI*VCKM((IA+1)/2,(JA+1)/2)*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHW)/2)+WDTE(0,4))
+ SIGH(NCHN)=HI*FACBW*HF
+ 110 CONTINUE
+ 120 CONTINUE
+
+ ELSEIF(ISUB.EQ.15) THEN
+C...f + fbar -> g + (gamma*/Z0) (q + qbar -> g + (gamma*/Z0) only)
+ FACZG=COMFAC*AS*AEM*(8D0/9D0)*(TH2+UH2+2D0*SQM4*SH)/(TH*UH)
+C...gamma, gamma/Z interference and Z couplings to final fermion pairs
+ HFGG=0D0
+ HFGZ=0D0
+ HFZZ=0D0
+ RADC4=1D0+PYALPS(SQM4)/PARU(1)
+ DO 130 I=1,MIN(16,MDCY(23,3))
+ IDC=I+MDCY(23,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 130
+ IMDM=0
+ IF(MDME(IDC,1).EQ.1.OR.MDME(IDC,1).EQ.2.OR.MDME(IDC,1).EQ.4)
+ & IMDM=1
+ IF(I.LE.8) THEN
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ELSEIF(I.LE.16) THEN
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ENDIF
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SQM4
+ IF(4D0*RM1.LT.1D0) THEN
+ FCOF=1D0
+ IF(I.LE.8) FCOF=3D0*RADC4
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(IMDM.EQ.1) THEN
+ HFGG=HFGG+FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ HFGZ=HFGZ+FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ HFZZ=HFZZ+FCOF*(VF**2*(1D0+2D0*RM1)+
+ & AF**2*(1D0-4D0*RM1))*BE34
+ ENDIF
+ ENDIF
+ 130 CONTINUE
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=(1D0/PARU(1))*GMMZ/((SQM4-SQMZ)**2+GMMZ**2)
+ MINT15=MINT(15)
+ MINT(15)=1
+ MINT(61)=1
+ CALL PYWIDT(23,SQM4,WDTP,WDTE)
+ MINT(15)=MINT15
+ HFAEM=(PARU(108)/PARU(2))*(2D0/3D0)
+ HFGG=HFGG*HFAEM*VINT(111)/SQM4
+ HFGZ=HFGZ*HFAEM*VINT(112)/SQM4
+ HFZZ=HFZZ*HFAEM*VINT(114)/SQM4
+C...Loop over flavours; consider full gamma/Z structure
+ DO 140 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 140
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZG*(EI**2*HFGG+EI*VI*HFGZ+
+ & (VI**2+AI**2)*HFZZ)/HBW4
+ 140 CONTINUE
+
+ ELSEIF(ISUB.EQ.16) THEN
+C...f + fbar' -> g + W+/- (q + qbar' -> g + W+/- only)
+ FACWG=COMFAC*AS*AEM/XW*2D0/9D0*(TH2+UH2+2D0*SQM4*SH)/(TH*UH)
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=GMMW/((SQM4-SQMW)**2+GMMW**2)
+ CALL PYWIDT(24,SQM4,WDTP,WDTE)
+ GMMWC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMWC/((SQM4-SQMW)**2+GMMWC**2)
+ FACWG=FACWG*HBW4C/HBW4
+ DO 160 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.10.OR.KFAC(1,I).EQ.0) GOTO 160
+ DO 150 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.10.OR.KFAC(2,J).EQ.0) GOTO 150
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 150
+ KCHW=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ WIDSC=(WDTE(0,1)+WDTE(0,(5-KCHW)/2)+WDTE(0,4))/WDTP(0)
+ FCKM=VCKM((IA+1)/2,(JA+1)/2)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWG*FCKM*WIDSC
+ 150 CONTINUE
+ 160 CONTINUE
+
+ ELSEIF(ISUB.EQ.19) THEN
+C...f + fbar -> gamma + (gamma*/Z0)
+ FACGZ=COMFAC*2D0*AEM**2*(TH2+UH2+2D0*SQM4*SH)/(TH*UH)
+C...gamma, gamma/Z interference and Z couplings to final fermion pairs
+ HFGG=0D0
+ HFGZ=0D0
+ HFZZ=0D0
+ RADC4=1D0+PYALPS(SQM4)/PARU(1)
+ DO 170 I=1,MIN(16,MDCY(23,3))
+ IDC=I+MDCY(23,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 170
+ IMDM=0
+ IF(MDME(IDC,1).EQ.1.OR.MDME(IDC,1).EQ.2.OR.MDME(IDC,1).EQ.4)
+ & IMDM=1
+ IF(I.LE.8) THEN
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ELSEIF(I.LE.16) THEN
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ENDIF
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SQM4
+ IF(4D0*RM1.LT.1D0) THEN
+ FCOF=1D0
+ IF(I.LE.8) FCOF=3D0*RADC4
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(IMDM.EQ.1) THEN
+ HFGG=HFGG+FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ HFGZ=HFGZ+FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ HFZZ=HFZZ+FCOF*(VF**2*(1D0+2D0*RM1)+
+ & AF**2*(1D0-4D0*RM1))*BE34
+ ENDIF
+ ENDIF
+ 170 CONTINUE
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=(1D0/PARU(1))*GMMZ/((SQM4-SQMZ)**2+GMMZ**2)
+ MINT15=MINT(15)
+ MINT(15)=1
+ MINT(61)=1
+ CALL PYWIDT(23,SQM4,WDTP,WDTE)
+ MINT(15)=MINT15
+ HFAEM=(PARU(108)/PARU(2))*(2D0/3D0)
+ HFGG=HFGG*HFAEM*VINT(111)/SQM4
+ HFGZ=HFGZ*HFAEM*VINT(112)/SQM4
+ HFZZ=HFZZ*HFAEM*VINT(114)/SQM4
+C...Loop over flavours; consider full gamma/Z structure
+ DO 180 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 180
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGZ*FCOI*EI**2*(EI**2*HFGG+EI*VI*HFGZ+
+ & (VI**2+AI**2)*HFZZ)/HBW4
+ 180 CONTINUE
+
+ ELSEIF(ISUB.EQ.20) THEN
+C...f + fbar' -> gamma + W+/-
+ FACGW=COMFAC*0.5D0*AEM**2/XW
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=GMMW/((SQM4-SQMW)**2+GMMW**2)
+ CALL PYWIDT(24,SQM4,WDTP,WDTE)
+ GMMWC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMWC/((SQM4-SQMW)**2+GMMWC**2)
+ FACGW=FACGW*HBW4C/HBW4
+C...Anomalous couplings
+ TERM1=(TH2+UH2+2D0*SQM4*SH)/(TH*UH)
+ TERM2=0D0
+ TERM3=0D0
+ IF(ITCM(5).GE.1.AND.ITCM(5).LE.4) THEN
+ TERM2=RTCM(46)*(TH-UH)/(TH+UH)
+ TERM3=0.5D0*RTCM(46)**2*(TH*UH+(TH2+UH2)*SH/
+ & (4D0*SQMW))/(TH+UH)**2
+ ENDIF
+ DO 200 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.20.OR.KFAC(1,I).EQ.0) GOTO 200
+ DO 190 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.20.OR.KFAC(2,J).EQ.0) GOTO 190
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 190
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 190
+ KCHW=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ WIDSC=(WDTE(0,1)+WDTE(0,(5-KCHW)/2)+WDTE(0,4))/WDTP(0)
+ IF(IA.LE.10) THEN
+ FACWR=UH/(TH+UH)-1D0/3D0
+ FCKM=VCKM((IA+1)/2,(JA+1)/2)
+ FCOI=FACA/3D0
+ ELSE
+ FACWR=-TH/(TH+UH)
+ FCKM=1D0
+ FCOI=1D0
+ ENDIF
+ FACWK=TERM1*FACWR**2+TERM2*FACWR+TERM3
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGW*FACWK*FCOI*FCKM*WIDSC
+ 190 CONTINUE
+ 200 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.40) THEN
+ IF(ISUB.EQ.22) THEN
+C...f + fbar -> (gamma*/Z0) + (gamma*/Z0)
+C...Kinematics dependence
+ FACZZ=COMFAC*AEM**2*((TH2+UH2+2D0*(SQM3+SQM4)*SH)/(TH*UH)-
+ & SQM3*SQM4*(1D0/TH2+1D0/UH2))
+C...gamma, gamma/Z interference and Z couplings to final fermion pairs
+ DO 220 I=1,6
+ DO 210 J=1,3
+ HGZ(I,J)=0D0
+ 210 CONTINUE
+ 220 CONTINUE
+ RADC3=1D0+PYALPS(SQM3)/PARU(1)
+ RADC4=1D0+PYALPS(SQM4)/PARU(1)
+ DO 230 I=1,MIN(16,MDCY(23,3))
+ IDC=I+MDCY(23,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 230
+ IMDM=0
+ IF(MDME(IDC,1).EQ.1.OR.MDME(IDC,1).EQ.2) IMDM=1
+ IF(MDME(IDC,1).EQ.4.OR.MDME(IDC,1).EQ.5) IMDM=MDME(IDC,1)-2
+ IF(I.LE.8) THEN
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ELSEIF(I.LE.16) THEN
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ENDIF
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SQM3
+ IF(4D0*RM1.LT.1D0) THEN
+ FCOF=1D0
+ IF(I.LE.8) FCOF=3D0*RADC3
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(IMDM.GE.1) THEN
+ HGZ(1,IMDM)=HGZ(1,IMDM)+FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ HGZ(2,IMDM)=HGZ(2,IMDM)+FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ HGZ(3,IMDM)=HGZ(3,IMDM)+FCOF*(VF**2*(1D0+2D0*RM1)+
+ & AF**2*(1D0-4D0*RM1))*BE34
+ ENDIF
+ ENDIF
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SQM4
+ IF(4D0*RM1.LT.1D0) THEN
+ FCOF=1D0
+ IF(I.LE.8) FCOF=3D0*RADC4
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(IMDM.GE.1) THEN
+ HGZ(4,IMDM)=HGZ(4,IMDM)+FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ HGZ(5,IMDM)=HGZ(5,IMDM)+FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ HGZ(6,IMDM)=HGZ(6,IMDM)+FCOF*(VF**2*(1D0+2D0*RM1)+
+ & AF**2*(1D0-4D0*RM1))*BE34
+ ENDIF
+ ENDIF
+ 230 CONTINUE
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW3=(1D0/PARU(1))*GMMZ/((SQM3-SQMZ)**2+GMMZ**2)
+ HBW4=(1D0/PARU(1))*GMMZ/((SQM4-SQMZ)**2+GMMZ**2)
+ MINT15=MINT(15)
+ MINT(15)=1
+ MINT(61)=1
+ CALL PYWIDT(23,SQM3,WDTP,WDTE)
+ MINT(15)=MINT15
+ HFAEM=(PARU(108)/PARU(2))*(2D0/3D0)
+ DO 240 J=1,3
+ HGZ(1,J)=HGZ(1,J)*HFAEM*VINT(111)/SQM3
+ HGZ(2,J)=HGZ(2,J)*HFAEM*VINT(112)/SQM3
+ HGZ(3,J)=HGZ(3,J)*HFAEM*VINT(114)/SQM3
+ 240 CONTINUE
+ MINT15=MINT(15)
+ MINT(15)=1
+ MINT(61)=1
+ CALL PYWIDT(23,SQM4,WDTP,WDTE)
+ MINT(15)=MINT15
+ HFAEM=(PARU(108)/PARU(2))*(2D0/3D0)
+ DO 250 J=1,3
+ HGZ(4,J)=HGZ(4,J)*HFAEM*VINT(111)/SQM4
+ HGZ(5,J)=HGZ(5,J)*HFAEM*VINT(112)/SQM4
+ HGZ(6,J)=HGZ(6,J)*HFAEM*VINT(114)/SQM4
+ 250 CONTINUE
+C...Loop over flavours; separate left- and right-handed couplings
+ DO 270 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 270
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ VALI=VI-AI
+ VARI=VI+AI
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ DO 260 J=1,3
+ HL3(J)=EI**2*HGZ(1,J)+EI*VALI*HGZ(2,J)+VALI**2*HGZ(3,J)
+ HR3(J)=EI**2*HGZ(1,J)+EI*VARI*HGZ(2,J)+VARI**2*HGZ(3,J)
+ HL4(J)=EI**2*HGZ(4,J)+EI*VALI*HGZ(5,J)+VALI**2*HGZ(6,J)
+ HR4(J)=EI**2*HGZ(4,J)+EI*VARI*HGZ(5,J)+VARI**2*HGZ(6,J)
+ 260 CONTINUE
+ FACLR=HL3(1)*HL4(1)+HL3(1)*(HL4(2)+HL4(3))+
+ & HL4(1)*(HL3(2)+HL3(3))+HL3(2)*HL4(3)+HL4(2)*HL3(3)+
+ & HR3(1)*HR4(1)+HR3(1)*(HR4(2)+HR4(3))+
+ & HR4(1)*(HR3(2)+HR3(3))+HR3(2)*HR4(3)+HR4(2)*HR3(3)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACZZ*FCOI*FACLR/(HBW3*HBW4)
+ 270 CONTINUE
+
+ ELSEIF(ISUB.EQ.23) THEN
+C...f + fbar' -> Z0 + W+/- (Z0 only, i.e. no gamma* admixture.)
+ FACZW=COMFAC*0.5D0*(AEM/XW)**2
+ FACZW=FACZW*WIDS(23,2)
+ THUH=MAX(TH*UH-SQM3*SQM4,SH*CKIN(3)**2)
+ FACBW=1D0/((SH-SQMW)**2+GMMW**2)
+ DO 290 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.20.OR.KFAC(1,I).EQ.0) GOTO 290
+ DO 280 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.20.OR.KFAC(2,J).EQ.0) GOTO 280
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 280
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 280
+ KCHW=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ EI=KCHG(IA,1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ EJ=KCHG(JA,1)/3D0
+ AJ=SIGN(1D0,EJ+0.1D0)
+ VJ=AJ-4D0*EJ*XWV
+ IF(VI+AI.GT.0) THEN
+ VISAV=VI
+ AISAV=AI
+ VI=VJ
+ AI=AJ
+ VJ=VISAV
+ AJ=AISAV
+ ENDIF
+ FCKM=1D0
+ IF(IA.LE.10) FCKM=VCKM((IA+1)/2,(JA+1)/2)
+ FCOI=1D0
+ IF(IA.LE.10) FCOI=FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZW*FCOI*FCKM*(FACBW*((9D0-8D0*XW)/4D0*THUH+
+ & (8D0*XW-6D0)/4D0*SH*(SQM3+SQM4))+(THUH-SH*(SQM3+SQM4))*
+ & (SH-SQMW)*FACBW*0.5D0*((VJ+AJ)/TH-(VI+AI)/UH)+
+ & THUH/(16D0*XW1)*((VJ+AJ)**2/TH2+(VI+AI)**2/UH2)+
+ & SH*(SQM3+SQM4)/(8D0*XW1)*(VI+AI)*(VJ+AJ)/(TH*UH))*
+ & WIDS(24,(5-KCHW)/2)
+C***Protect against slightly negative cross sections. (Reason yet to be
+C***sorted out. One possibility: addition of width to the W propagator.)
+ SIGH(NCHN)=MAX(0D0,SIGH(NCHN))
+ 280 CONTINUE
+ 290 CONTINUE
+
+ ELSEIF(ISUB.EQ.25) THEN
+C...f + fbar -> W+ + W-
+C...Propagators: Z0, W+- as simulated in PYOFSH and as desired
+ GMMZC=GMMZ
+ HBWZC=SH**2/((SH-SQMZ)**2+GMMZC**2)
+ HBW3=GMMW/((SQM3-SQMW)**2+GMMW**2)
+ CALL PYWIDT(24,SQM3,WDTP,WDTE)
+ GMMW3=SQRT(SQM3)*WDTP(0)
+ HBW3C=GMMW3/((SQM3-SQMW)**2+GMMW3**2)
+ HBW4=GMMW/((SQM4-SQMW)**2+GMMW**2)
+ CALL PYWIDT(24,SQM4,WDTP,WDTE)
+ GMMW4=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMW4/((SQM4-SQMW)**2+GMMW4**2)
+C...Kinematical functions
+ THUH=MAX(TH*UH-SQM3*SQM4,SH*CKIN(3)**2)
+ THUH34=(2D0*SH*(SQM3+SQM4)+THUH)/(SQM3*SQM4)
+ GS=(((SH-SQM3-SQM4)**2-4D0*SQM3*SQM4)*THUH34+12D0*THUH)/SH2
+ GT=THUH34+4D0*THUH/TH2
+ GST=((SH-SQM3-SQM4)*THUH34+4D0*(SH*(SQM3+SQM4)-THUH)/TH)/SH
+ GU=THUH34+4D0*THUH/UH2
+ GSU=((SH-SQM3-SQM4)*THUH34+4D0*(SH*(SQM3+SQM4)-THUH)/UH)/SH
+C...Common factors and couplings
+ FACWW=COMFAC*(HBW3C/HBW3)*(HBW4C/HBW4)
+ FACWW=FACWW*WIDS(24,1)
+ CGG=AEM**2/2D0
+ CGZ=AEM**2/(4D0*XW)*HBWZC*(1D0-SQMZ/SH)
+ CZZ=AEM**2/(32D0*XW**2)*HBWZC
+ CNG=AEM**2/(4D0*XW)
+ CNZ=AEM**2/(16D0*XW**2)*HBWZC*(1D0-SQMZ/SH)
+ CNN=AEM**2/(16D0*XW**2)
+C...Coulomb factor for W+W- pair
+ IF(MSTP(40).GE.1.AND.MSTP(40).LE.3) THEN
+ COULE=(SH-4D0*SQMW)/(4D0*PMAS(24,1))
+ COULP=MAX(1D-10,0.5D0*BE34*SQRT(SH))
+ IF(COULE.LT.100D0*PMAS(24,2)) THEN
+ COULP1=SQRT(0.5D0*PMAS(24,1)*(SQRT(COULE**2+
+ & PMAS(24,2)**2)-COULE))
+ ELSE
+ COULP1=SQRT(0.5D0*PMAS(24,1)*(0.5D0*PMAS(24,2)**2/COULE))
+ ENDIF
+ IF(COULE.GT.-100D0*PMAS(24,2)) THEN
+ COULP2=SQRT(0.5D0*PMAS(24,1)*(SQRT(COULE**2+
+ & PMAS(24,2)**2)+COULE))
+ ELSE
+ COULP2=SQRT(0.5D0*PMAS(24,1)*(0.5D0*PMAS(24,2)**2/
+ & ABS(COULE)))
+ ENDIF
+ IF(MSTP(40).EQ.1) THEN
+ COULDC=PARU(1)-2D0*ATAN((COULP1**2+COULP2**2-COULP**2)/
+ & MAX(1D-10,2D0*COULP*COULP1))
+ FACCOU=1D0+0.5D0*PARU(101)*COULDC/MAX(1D-5,BE34)
+ ELSEIF(MSTP(40).EQ.2) THEN
+ COULCK=DCMPLX(DBLE(COULP1),DBLE(COULP2))
+ COULCP=DCMPLX(0D0,DBLE(COULP))
+ COULCD=(COULCK+COULCP)/(COULCK-COULCP)
+ COULCR=1D0+DBLE(PARU(101)*SQRT(SH))/
+ & (4D0*COULCP)*LOG(COULCD)
+ COULCS=DCMPLX(0D0,0D0)
+ NSTP=100
+ DO 300 ISTP=1,NSTP
+ COULXX=(ISTP-0.5)/NSTP
+ COULCS=COULCS+(1D0/COULXX)*LOG((1D0+COULXX*COULCD)/
+ & (1D0+COULXX/COULCD))
+ 300 CONTINUE
+ COULCR=COULCR+DBLE(PARU(101)**2*SH)/(16D0*COULCP*COULCK)*
+ & (COULCS/NSTP)
+ FACCOU=ABS(COULCR)**2
+ ELSEIF(MSTP(40).EQ.3) THEN
+ COULDC=PARU(1)-2D0*(1D0-BE34)**2*ATAN((COULP1**2+
+ & COULP2**2-COULP**2)/MAX(1D-10,2D0*COULP*COULP1))
+ FACCOU=1D0+0.5D0*PARU(101)*COULDC/MAX(1D-5,BE34)
+ ENDIF
+ ELSEIF(MSTP(40).EQ.4) THEN
+ FACCOU=1D0+0.5D0*PARU(101)*PARU(1)/MAX(1D-5,BE34)
+ ELSE
+ FACCOU=1D0
+ ENDIF
+ VINT(95)=FACCOU
+ FACWW=FACWW*FACCOU
+C...Loop over allowed flavours
+ DO 310 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 310
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ IF(MSTP(50).LE.0.OR.IABS(I).LE.10) THEN
+ IF(AI.LT.0D0) THEN
+ DSIGWW=(CGG*EI**2+CGZ*VI*EI+CZZ*(VI**2+AI**2))*GS+
+ & (CNG*EI+CNZ*(VI+AI))*GST+CNN*GT
+ ELSE
+ DSIGWW=(CGG*EI**2+CGZ*VI*EI+CZZ*(VI**2+AI**2))*GS-
+ & (CNG*EI+CNZ*(VI+AI))*GSU+CNN*GU
+ ENDIF
+ ELSE
+ XMW02=0.5D0*(SQM3+SQM4)-0.25D0*(SQM3-SQM4)**2/SH
+ BET=SQRT(1D0-4D0*XMW02/SH)
+ GAT=1D0/SQRT(1D0-BET**2)
+ STHE2=1D0-CTH**2
+ AMPZG=BET**3*(16D0+(4D0*BET**2*GAT**2+3D0/GAT**2)*STHE2)
+ AMPNU=BET*(2D0+BET**2*GAT**2*STHE2/2D0+
+ & 2D0*BET**2*(1D0-BET**2)*STHE2/(1D0-2D0*BET*CTH+BET**2)**2)
+ AMPNG=BET*((1D0+BET**2)*(4D0+BET**2*GAT**2*STHE2)+
+ & 2D0*(1D0-BET**2)*(BET**2*STHE2-2D0*(1D0-BET**2))/
+ & (1D0-2D0*BET*CTH+BET**2))
+ PROPI1=(0.25D0*SQMZ/XMW02)*HBWZC*(1D0-SQMZ/SH)
+ PROPI2=(0.25D0*SQMZ/XMW02)**2*HBWZC
+ A0=(2D0*(XMW02/SQMZ)-(1D0-BET**2)*XW)*POLL
+ A1=(2D0*(XMW02/SQMZ)**2-2*XMW02/SQMZ*(1D0-BET**2)*XW)*POLL
+ A2=(1D0-BET**2)**2*XW**2*(POLR+POLL)/2D0
+ ATOT=AMPNU*POLL+(A1+A2)*PROPI2*AMPZG-A0*PROPI1*AMPNG
+ ATOT=ATOT*CNN/SQMW*SH/BET*2D0
+ DSIGWW=ATOT
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWW*FCOI*DSIGWW
+ 310 CONTINUE
+
+ ELSEIF(ISUB.EQ.30) THEN
+C...f + g -> f + (gamma*/Z0) (q + g -> q + (gamma*/Z0) only)
+ FZQ=COMFAC*FACA*AS*AEM*(1D0/3D0)*(SH2+UH2+2D0*SQM4*TH)/
+ & (-SH*UH)
+C...gamma, gamma/Z interference and Z couplings to final fermion pairs
+ HFGG=0D0
+ HFGZ=0D0
+ HFZZ=0D0
+ RADC4=1D0+PYALPS(SQM4)/PARU(1)
+ DO 320 I=1,MIN(16,MDCY(23,3))
+ IDC=I+MDCY(23,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 320
+ IMDM=0
+ IF(MDME(IDC,1).EQ.1.OR.MDME(IDC,1).EQ.2.OR.MDME(IDC,1).EQ.4)
+ & IMDM=1
+ IF(I.LE.8) THEN
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ELSEIF(I.LE.16) THEN
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ENDIF
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SQM4
+ IF(4D0*RM1.LT.1D0) THEN
+ FCOF=1D0
+ IF(I.LE.8) FCOF=3D0*RADC4
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(IMDM.EQ.1) THEN
+ HFGG=HFGG+FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ HFGZ=HFGZ+FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ HFZZ=HFZZ+FCOF*(VF**2*(1D0+2D0*RM1)+
+ & AF**2*(1D0-4D0*RM1))*BE34
+ ENDIF
+ ENDIF
+ 320 CONTINUE
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=(1D0/PARU(1))*GMMZ/((SQM4-SQMZ)**2+GMMZ**2)
+ MINT15=MINT(15)
+ MINT(15)=1
+ MINT(61)=1
+ CALL PYWIDT(23,SQM4,WDTP,WDTE)
+ MINT(15)=MINT15
+ HFAEM=(PARU(108)/PARU(2))*(2D0/3D0)
+ HFGG=HFGG*HFAEM*VINT(111)/SQM4
+ HFGZ=HFGZ*HFAEM*VINT(112)/SQM4
+ HFZZ=HFZZ*HFAEM*VINT(114)/SQM4
+C...Loop over flavours; consider full gamma/Z structure
+ DO 340 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 340
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ FACZQ=FZQ*(EI**2*HFGG+EI*VI*HFGZ+
+ & (VI**2+AI**2)*HFZZ)/HBW4
+ DO 330 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 330
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 330
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZQ
+ 330 CONTINUE
+ 340 CONTINUE
+
+ ELSEIF(ISUB.EQ.31) THEN
+C...f + g -> f' + W+/- (q + g -> q' + W+/- only)
+ FACWQ=COMFAC*FACA*AS*AEM/XW*1D0/12D0*
+ & (SH2+UH2+2D0*SQM4*TH)/(-SH*UH)
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=GMMW/((SQM4-SQMW)**2+GMMW**2)
+ CALL PYWIDT(24,SQM4,WDTP,WDTE)
+ GMMWC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMWC/((SQM4-SQMW)**2+GMMWC**2)
+ FACWQ=FACWQ*HBW4C/HBW4
+ DO 360 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 360
+ IA=IABS(I)
+ KCHW=ISIGN(1,KCHG(IA,1)*ISIGN(1,I))
+ WIDSC=(WDTE(0,1)+WDTE(0,(5-KCHW)/2)+WDTE(0,4))/WDTP(0)
+ DO 350 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 350
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 350
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWQ*VINT(180+I)*WIDSC
+ 350 CONTINUE
+ 360 CONTINUE
+
+ ELSEIF(ISUB.EQ.35) THEN
+C...f + gamma -> f + (gamma*/Z0)
+ IF(MINT(15).EQ.22.AND.VINT(3).LT.0D0) THEN
+ FZQN=SH2+UH2+2D0*(SQM4-VINT(3)**2)*TH
+ FZQDTM=VINT(3)**2*SQM4-SH*(UH-VINT(4)**2)
+ ELSEIF(MINT(16).EQ.22.AND.VINT(4).LT.0D0) THEN
+ FZQN=SH2+UH2+2D0*(SQM4-VINT(4)**2)*TH
+ FZQDTM=VINT(4)**2*SQM4-SH*(UH-VINT(3)**2)
+ ELSE
+ FZQN=SH2+UH2+2D0*SQM4*TH
+ FZQDTM=-SH*UH
+ ENDIF
+ FZQN=COMFAC*2D0*AEM**2*MAX(0D0,FZQN)
+C...gamma, gamma/Z interference and Z couplings to final fermion pairs
+ HFGG=0D0
+ HFGZ=0D0
+ HFZZ=0D0
+ RADC4=1D0+PYALPS(SQM4)/PARU(1)
+ DO 370 I=1,MIN(16,MDCY(23,3))
+ IDC=I+MDCY(23,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 370
+ IMDM=0
+ IF(MDME(IDC,1).EQ.1.OR.MDME(IDC,1).EQ.2.OR.MDME(IDC,1).EQ.4)
+ & IMDM=1
+ IF(I.LE.8) THEN
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ELSEIF(I.LE.16) THEN
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ ENDIF
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SQM4
+ IF(4D0*RM1.LT.1D0) THEN
+ FCOF=1D0
+ IF(I.LE.8) FCOF=3D0*RADC4
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ IF(IMDM.EQ.1) THEN
+ HFGG=HFGG+FCOF*EF**2*(1D0+2D0*RM1)*BE34
+ HFGZ=HFGZ+FCOF*EF*VF*(1D0+2D0*RM1)*BE34
+ HFZZ=HFZZ+FCOF*(VF**2*(1D0+2D0*RM1)+
+ & AF**2*(1D0-4D0*RM1))*BE34
+ ENDIF
+ ENDIF
+ 370 CONTINUE
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=(1D0/PARU(1))*GMMZ/((SQM4-SQMZ)**2+GMMZ**2)
+ MINT15=MINT(15)
+ MINT(15)=1
+ MINT(61)=1
+ CALL PYWIDT(23,SQM4,WDTP,WDTE)
+ MINT(15)=MINT15
+ HFAEM=(PARU(108)/PARU(2))*(2D0/3D0)
+ HFGG=HFGG*HFAEM*VINT(111)/SQM4
+ HFGZ=HFGZ*HFAEM*VINT(112)/SQM4
+ HFZZ=HFZZ*HFAEM*VINT(114)/SQM4
+C...Loop over flavours; consider full gamma/Z structure
+ DO 390 I=MMINA,MMAXA
+ IF(I.EQ.0) GOTO 390
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ FACZQ=EI**2*(EI**2*HFGG+EI*VI*HFGZ+
+ & (VI**2+AI**2)*HFZZ)/HBW4
+ FZQD=MAX(PMAS(IABS(I),1)**2*SQM4,FZQDTM)
+ DO 380 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 380
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 380
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZQ*FZQN/FZQD
+ 380 CONTINUE
+ 390 CONTINUE
+
+ ELSEIF(ISUB.EQ.36) THEN
+C...f + gamma -> f' + W+/-
+ FWQ=COMFAC*AEM**2/(2D0*XW)*
+ & (SH2+UH2+2D0*SQM4*TH)/(SQPTH*SQM4-SH*UH)
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=GMMW/((SQM4-SQMW)**2+GMMW**2)
+ CALL PYWIDT(24,SQM4,WDTP,WDTE)
+ GMMWC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMWC/((SQM4-SQMW)**2+GMMWC**2)
+ FWQ=FWQ*HBW4C/HBW4
+ DO 410 I=MMINA,MMAXA
+ IF(I.EQ.0) GOTO 410
+ IA=IABS(I)
+ EIA=ABS(KCHG(IABS(I),1)/3D0)
+ FACWQ=FWQ*(EIA-SH/(SH+UH))**2
+ KCHW=ISIGN(1,KCHG(IA,1)*ISIGN(1,I))
+ WIDSC=(WDTE(0,1)+WDTE(0,(5-KCHW)/2)+WDTE(0,4))/WDTP(0)
+ DO 400 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 400
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 400
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWQ*VINT(180+I)*WIDSC
+ 400 CONTINUE
+ 410 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.100) THEN
+ IF(ISUB.EQ.69) THEN
+C...gamma + gamma -> W+ + W-
+ SQMWE=MAX(0.5D0*SQMW,SQRT(SQM3*SQM4))
+ FPROP=SH2/((SQMWE-TH)*(SQMWE-UH))
+ FACWW=COMFAC*6D0*AEM**2*(1D0-FPROP*(4D0/3D0+2D0*SQMWE/SH)+
+ & FPROP**2*(2D0/3D0+2D0*(SQMWE/SH)**2))*WIDS(24,1)
+ IF(KFAC(1,22)*KFAC(2,22).EQ.0) GOTO 420
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWW
+ 420 CONTINUE
+
+ ELSEIF(ISUB.EQ.70) THEN
+C...gamma + W+/- -> Z0 + W+/-
+ SQMWE=MAX(0.5D0*SQMW,SQRT(SQM3*SQM4))
+ FPROP=(TH-SQMWE)**2/(-SH*(SQMWE-UH))
+ FACZW=COMFAC*6D0*AEM**2*(XW1/XW)*
+ & (1D0-FPROP*(4D0/3D0+2D0*SQMWE/(TH-SQMWE))+
+ & FPROP**2*(2D0/3D0+2D0*(SQMWE/(TH-SQMWE))**2))*WIDS(23,2)
+ DO 440 KCHW=1,-1,-2
+ DO 430 ISDE=1,2
+ IF(KFAC(ISDE,22)*KFAC(3-ISDE,24*KCHW).EQ.0) GOTO 430
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=22
+ ISIG(NCHN,3-ISDE)=24*KCHW
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZW*WIDS(24,(5-KCHW)/2)
+ 430 CONTINUE
+ 440 CONTINUE
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSGHG
+C...Subprocess cross sections for Higgs processes,
+C...except Higgs pairs in PYSGSU, but including WW scattering.
+C...Auxiliary to PYSIGH.
+
+ SUBROUTINE PYSGHG(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYPARS/,/PYINT1/,/PYINT2/,
+ &/PYINT3/,/PYINT4/,/PYSUBS/,/PYMSSM/,/PYSGCM/
+C...Local arrays and complex variables
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5)
+ COMPLEX*16 A004,A204,A114,A00U,A20U,A11U
+ COMPLEX*16 CIGTOT,CIZTOT,F0ALP,F1ALP,F2ALP,F0BET,F1BET,F2BET,FIF
+
+C...Convert H or A process into equivalent h one
+ IHIGG=1
+ KFHIGG=25
+ IF(ISUB.EQ.401.OR.ISUB.EQ.402) THEN
+ KFHIGG=KFPR(ISUB,1)
+ END IF
+ IF((ISUB.GE.151.AND.ISUB.LE.160).OR.(ISUB.GE.171.AND.
+ &ISUB.LE.190)) THEN
+ IHIGG=2
+ IF(MOD(ISUB-1,10).GE.5) IHIGG=3
+ KFHIGG=33+IHIGG
+ IF(ISUB.EQ.151.OR.ISUB.EQ.156) ISUB=3
+ IF(ISUB.EQ.152.OR.ISUB.EQ.157) ISUB=102
+ IF(ISUB.EQ.153.OR.ISUB.EQ.158) ISUB=103
+ IF(ISUB.EQ.171.OR.ISUB.EQ.176) ISUB=24
+ IF(ISUB.EQ.172.OR.ISUB.EQ.177) ISUB=26
+ IF(ISUB.EQ.173.OR.ISUB.EQ.178) ISUB=123
+ IF(ISUB.EQ.174.OR.ISUB.EQ.179) ISUB=124
+ IF(ISUB.EQ.181.OR.ISUB.EQ.186) ISUB=121
+ IF(ISUB.EQ.182.OR.ISUB.EQ.187) ISUB=122
+ IF(ISUB.EQ.183.OR.ISUB.EQ.188) ISUB=111
+ IF(ISUB.EQ.184.OR.ISUB.EQ.189) ISUB=112
+ IF(ISUB.EQ.185.OR.ISUB.EQ.190) ISUB=113
+ ENDIF
+ SQMH=PMAS(KFHIGG,1)**2
+ GMMH=PMAS(KFHIGG,1)*PMAS(KFHIGG,2)
+
+C...Strongly interacting Z_L/W_L model of Dobado, Herrero, Terron
+ IF((MSTP(46).GE.3.AND.MSTP(46).LE.6).AND.(ISUB.EQ.71.OR.ISUB.EQ.
+ &72.OR.ISUB.EQ.73.OR.ISUB.EQ.76.OR.ISUB.EQ.77)) THEN
+C...Calculate M_R and N_R functions for Higgs-like and QCD-like models
+ IF(MSTP(46).LE.4) THEN
+ HDTLH=LOG(PMAS(25,1)/PARP(44))
+ HDTMR=(4.5D0*PARU(1)/SQRT(3D0)-74D0/9D0)/8D0+HDTLH/12D0
+ HDTNR=-1D0/18D0+HDTLH/6D0
+ ELSE
+ HDTNM=0.125D0*(1D0/(288D0*PARU(1)**2)+(PARP(47)/PARP(45))**2)
+ HDTLQ=LOG(PARP(45)/PARP(44))
+ HDTMR=-(4D0*PARU(1))**2*0.5D0*HDTNM+HDTLQ/12D0
+ HDTNR=(4D0*PARU(1))**2*HDTNM+HDTLQ/6D0
+ ENDIF
+
+C...Calculate lowest and next-to-lowest order partial wave amplitudes
+ HDTV=1D0/(16D0*PARU(1)*PARP(47)**2)
+ A00L=DBLE(HDTV*SH)
+ A20L=-0.5D0*A00L
+ A11L=A00L/6D0
+ HDTLS=LOG(SH/PARP(44)**2)
+ A004=DBLE((HDTV*SH)**2/(4D0*PARU(1)))*
+ & CMPLX(DBLE((176D0*HDTMR+112D0*HDTNR)/3D0+11D0/27D0-
+ & (50D0/9D0)*HDTLS),DBLE(4D0*PARU(1)))
+ A204=DBLE((HDTV*SH)**2/(4D0*PARU(1)))*
+ & CMPLX(DBLE(32D0*(HDTMR+2D0*HDTNR)/3D0+25D0/54D0-
+ & (20D0/9D0)*HDTLS),DBLE(PARU(1)))
+ A114=DBLE((HDTV*SH)**2/(6D0*PARU(1)))*
+ & CMPLX(DBLE(4D0*(-2D0*HDTMR+HDTNR)-1D0/18D0),DBLE(PARU(1)/6D0))
+
+C...Unitarize partial wave amplitudes with Pade or K-matrix method
+ IF(MSTP(46).EQ.3.OR.MSTP(46).EQ.5) THEN
+ A00U=A00L/(1D0-A004/A00L)
+ A20U=A20L/(1D0-A204/A20L)
+ A11U=A11L/(1D0-A114/A11L)
+ ELSE
+ A00U=(A00L+DBLE(A004))/(1D0-DCMPLX(0.D0,A00L+DBLE(A004)))
+ A20U=(A20L+DBLE(A204))/(1D0-DCMPLX(0.D0,A20L+DBLE(A204)))
+ A11U=(A11L+DBLE(A114))/(1D0-DCMPLX(0.D0,A11L+DBLE(A114)))
+ ENDIF
+ ENDIF
+
+C...Differential cross section expressions.
+
+ IF(ISUB.LE.60) THEN
+ IF(ISUB.EQ.3) THEN
+C...f + fbar -> h0 (or H0, or A0)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ HP=AEM/(8D0*XW)*SH/SQMW*SH
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ DO 100 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 100
+ IA=IABS(I)
+ RMQ=PYMRUN(IA,SH)**2/SH
+ HI=HP*RMQ
+ IF(IA.LE.10) HI=HP*RMQ*FACA/3D0
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) THEN
+ IKFI=1
+ IF(IA.LE.10.AND.MOD(IA,2).EQ.0) IKFI=2
+ IF(IA.GT.10) IKFI=3
+ HI=HI*PARU(150+10*IHIGG+IKFI)**2
+ IF(IMSS(1).NE.0.AND.IA.EQ.5) THEN
+ HI=HI/(1D0+RMSS(41))**2
+ IF(IHIGG.NE.3) THEN
+ HI=HI*(1D0+RMSS(41)*PARU(152+10*IHIGG)/
+ & PARU(151+10*IHIGG))**2
+ ENDIF
+ ENDIF
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 100 CONTINUE
+
+ ELSEIF(ISUB.EQ.5) THEN
+C...Z0 + Z0 -> h0
+ CALL PYWIDT(25,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(25,1)).GT.PARP(48)*PMAS(25,2)) FACBW=0D0
+ HP=AEM/(8D0*XW)*SH/SQMW*SH
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ HI=HP/4D0
+ FACI=8D0/(PARU(1)**2*XW1)*(AEM*XWC)**2
+ DO 120 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 120
+ DO 110 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 110
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ EJ=KCHG(IABS(J),1)/3D0
+ AJ=SIGN(1D0,EJ)
+ VJ=AJ-4D0*EJ*XWV
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACI*(VI**2+AI**2)*(VJ**2+AJ**2)*HI*FACBW*HF
+ 110 CONTINUE
+ 120 CONTINUE
+
+ ELSEIF(ISUB.EQ.8) THEN
+C...W+ + W- -> h0
+ CALL PYWIDT(25,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(25,1)).GT.PARP(48)*PMAS(25,2)) FACBW=0D0
+ HP=AEM/(8D0*XW)*SH/SQMW*SH
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ HI=HP/2D0
+ FACI=1D0/(4D0*PARU(1)**2)*(AEM/XW)**2
+ DO 140 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 140
+ EI=SIGN(1D0,DBLE(I))*KCHG(IABS(I),1)
+ DO 130 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 130
+ EJ=SIGN(1D0,DBLE(J))*KCHG(IABS(J),1)
+ IF(EI*EJ.GT.0D0) GOTO 130
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACI*VINT(180+I)*VINT(180+J)*HI*FACBW*HF
+ 130 CONTINUE
+ 140 CONTINUE
+
+ ELSEIF(ISUB.EQ.24) THEN
+C...f + fbar -> Z0 + h0 (or H0, or A0)
+C...Propagators: Z0, h0 as simulated in PYOFSH and as desired
+ HBW3=GMMZ/((SQM3-SQMZ)**2+GMMZ**2)
+ CALL PYWIDT(23,SQM3,WDTP,WDTE)
+ GMMZ3=SQRT(SQM3)*WDTP(0)
+ HBW3C=GMMZ3/((SQM3-SQMZ)**2+GMMZ3**2)
+ HBW4=GMMH/((SQM4-SQMH)**2+GMMH**2)
+ CALL PYWIDT(KFHIGG,SQM4,WDTP,WDTE)
+ GMMH4=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMH4/((SQM4-SQMH)**2+GMMH4**2)
+ THUH=MAX(TH*UH-SQM3*SQM4,SH*CKIN(3)**2)
+ FACHZ=COMFAC*(HBW3C/HBW3)*(HBW4C/HBW4)*8D0*(AEM*XWC)**2*
+ & (THUH+2D0*SH*SQM3)/((SH-SQMZ)**2+GMMZ**2)
+ FACHZ=FACHZ*WIDS(23,2)*WIDS(KFHIGG,2)
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) FACHZ=FACHZ*
+ & PARU(154+10*IHIGG)**2
+ DO 150 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 150
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACHZ*FCOI*(VI**2+AI**2)
+ 150 CONTINUE
+
+ ELSEIF(ISUB.EQ.26) THEN
+C...f + fbar' -> W+/- + h0 (or H0, or A0)
+C...Propagators: W+-, h0 as simulated in PYOFSH and as desired
+ HBW3=GMMW/((SQM3-SQMW)**2+GMMW**2)
+ CALL PYWIDT(24,SQM3,WDTP,WDTE)
+ GMMW3=SQRT(SQM3)*WDTP(0)
+ HBW3C=GMMW3/((SQM3-SQMW)**2+GMMW3**2)
+ HBW4=GMMH/((SQM4-SQMH)**2+GMMH**2)
+ CALL PYWIDT(KFHIGG,SQM4,WDTP,WDTE)
+ GMMH4=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMH4/((SQM4-SQMH)**2+GMMH4**2)
+ THUH=MAX(TH*UH-SQM3*SQM4,SH*CKIN(3)**2)
+ FACHW=COMFAC*0.125D0*(AEM/XW)**2*(THUH+2D0*SH*SQM3)/
+ & ((SH-SQMW)**2+GMMW**2)*(HBW3C/HBW3)*(HBW4C/HBW4)
+ FACHW=FACHW*WIDS(KFHIGG,2)
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) FACHW=FACHW*
+ & PARU(155+10*IHIGG)**2
+ DO 170 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.20.OR.KFAC(1,I).EQ.0) GOTO 170
+ DO 160 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.20.OR.KFAC(1,J).EQ.0) GOTO 160
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 160
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 160
+ KCHW=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ FCKM=1D0
+ IF(IA.LE.10) FCKM=VCKM((IA+1)/2,(JA+1)/2)
+ FCOI=1D0
+ IF(IA.LE.10) FCOI=FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACHW*FCOI*FCKM*WIDS(24,(5-KCHW)/2)
+ 160 CONTINUE
+ 170 CONTINUE
+
+ ELSEIF(ISUB.EQ.32) THEN
+C...f + g -> f + h0 (q + g -> q + h0 only)
+ FHCQ=COMFAC*FACA*AS*AEM/XW*1D0/24D0
+C...H propagator: as simulated in PYOFSH and as desired
+ SQMHC=PMAS(25,1)**2
+ GMMHC=PMAS(25,1)*PMAS(25,2)
+ HBW4=GMMHC/((SQM4-SQMHC)**2+GMMHC**2)
+ CALL PYWIDT(25,SQM4,WDTP,WDTE)
+ GMMHCC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMHCC/((SQM4-SQMHC)**2+GMMHCC**2)
+ FHCQ=FHCQ*HBW4C/HBW4
+ DO 190 I=MMINA,MMAXA
+ IA=IABS(I)
+ IF(IA.NE.5) GOTO 190
+ SQML=PYMRUN(IA,SH)**2
+ SQMQ=PMAS(IA,1)**2
+ FACHCQ=FHCQ*SQML/SQMW*
+ & (SH/(SQMQ-UH)+2D0*SQMQ*(SQM4-UH)/(SQMQ-UH)**2+(SQMQ-UH)/SH-
+ & 2D0*SQMQ/(SQMQ-UH)+2D0*(SQM4-UH)/(SQMQ-UH)*
+ & (SQM4-SQMQ-SH)/SH)
+ DO 180 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 180
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 180
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACHCQ*WIDS(25,2)
+ 180 CONTINUE
+ 190 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.80) THEN
+ IF(ISUB.EQ.71) THEN
+C...Z0 + Z0 -> Z0 + Z0
+ IF(SH.LE.4.01D0*SQMZ) GOTO 220
+
+ IF(MSTP(46).LE.2) THEN
+C...Exact scattering ME:s for on-mass-shell gauge bosons
+ BE2=1D0-4D0*SQMZ/SH
+ TH=-0.5D0*SH*BE2*(1D0-CTH)
+ UH=-0.5D0*SH*BE2*(1D0+CTH)
+ IF(MAX(TH,UH).GT.-1D0) GOTO 220
+ SHANG=1D0/XW1*SQMW/SQMZ*(1D0+BE2)**2
+ ASHRE=(SH-SQMH)/((SH-SQMH)**2+GMMH**2)*SHANG
+ ASHIM=-GMMH/((SH-SQMH)**2+GMMH**2)*SHANG
+ THANG=1D0/XW1*SQMW/SQMZ*(BE2-CTH)**2
+ ATHRE=(TH-SQMH)/((TH-SQMH)**2+GMMH**2)*THANG
+ ATHIM=-GMMH/((TH-SQMH)**2+GMMH**2)*THANG
+ UHANG=1D0/XW1*SQMW/SQMZ*(BE2+CTH)**2
+ AUHRE=(UH-SQMH)/((UH-SQMH)**2+GMMH**2)*UHANG
+ AUHIM=-GMMH/((UH-SQMH)**2+GMMH**2)*UHANG
+ FACZZ=COMFAC*1D0/(4096D0*PARU(1)**2*16D0*XW1**2)*
+ & (AEM/XW)**4*(SH/SQMW)**2*(SQMZ/SQMW)*SH2
+ IF(MSTP(46).LE.0) FACZZ=FACZZ*(ASHRE**2+ASHIM**2)
+ IF(MSTP(46).EQ.1) FACZZ=FACZZ*((ASHRE+ATHRE+AUHRE)**2+
+ & (ASHIM+ATHIM+AUHIM)**2)
+ IF(MSTP(46).EQ.2) FACZZ=0D0
+
+ ELSE
+C...Strongly interacting Z_L/W_L model of Dobado, Herrero, Terron
+ FACZZ=COMFAC*(AEM/(16D0*PARU(1)*XW*XW1))**2*(64D0/9D0)*
+ & ABS(A00U+2D0*A20U)**2
+ ENDIF
+ FACZZ=FACZZ*WIDS(23,1)
+
+ DO 210 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 210
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ AVI=AI**2+VI**2
+ DO 200 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 200
+ EJ=KCHG(IABS(J),1)/3D0
+ AJ=SIGN(1D0,EJ)
+ VJ=AJ-4D0*EJ*XWV
+ AVJ=AJ**2+VJ**2
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACZZ*AVI*AVJ
+ 200 CONTINUE
+ 210 CONTINUE
+ 220 CONTINUE
+
+ ELSEIF(ISUB.EQ.72) THEN
+C...Z0 + Z0 -> W+ + W-
+ IF(SH.LE.4.01D0*SQMZ) GOTO 250
+
+ IF(MSTP(46).LE.2) THEN
+C...Exact scattering ME:s for on-mass-shell gauge bosons
+ BE2=SQRT((1D0-4D0*SQMW/SH)*(1D0-4D0*SQMZ/SH))
+ CTH2=CTH**2
+ TH=-0.5D0*SH*(1D0-2D0*(SQMW+SQMZ)/SH-BE2*CTH)
+ UH=-0.5D0*SH*(1D0-2D0*(SQMW+SQMZ)/SH+BE2*CTH)
+ IF(MAX(TH,UH).GT.-1D0) GOTO 250
+ SHANG=4D0*SQRT(SQMW/(SQMZ*XW1))*(1D0-2D0*SQMW/SH)*
+ & (1D0-2D0*SQMZ/SH)
+ ASHRE=(SH-SQMH)/((SH-SQMH)**2+GMMH**2)*SHANG
+ ASHIM=-GMMH/((SH-SQMH)**2+GMMH**2)*SHANG
+ ATWRE=XW1/SQMZ*SH/(TH-SQMW)*((CTH-BE2)**2*(3D0/2D0+BE2/2D0*
+ & CTH-(SQMW+SQMZ)/SH+(SQMW-SQMZ)**2/(SH*SQMW))+4D0*
+ & ((SQMW+SQMZ)/SH*(1D0-3D0*CTH2)+8D0*SQMW*SQMZ/SH2*
+ & (2D0*CTH2-1D0)+4D0*(SQMW**2+SQMZ**2)/SH2*CTH2+
+ & 2D0*(SQMW+SQMZ)/SH*BE2*CTH))
+ ATWIM=0D0
+ AUWRE=XW1/SQMZ*SH/(UH-SQMW)*((CTH+BE2)**2*(3D0/2D0-BE2/2D0*
+ & CTH-(SQMW+SQMZ)/SH+(SQMW-SQMZ)**2/(SH*SQMW))+4D0*
+ & ((SQMW+SQMZ)/SH*(1D0-3D0*CTH2)+8D0*SQMW*SQMZ/SH2*
+ & (2D0*CTH2-1D0)+4D0*(SQMW**2+SQMZ**2)/SH2*CTH2-
+ & 2D0*(SQMW+SQMZ)/SH*BE2*CTH))
+ AUWIM=0D0
+ A4RE=2D0*XW1/SQMZ*(3D0-CTH2-4D0*(SQMW+SQMZ)/SH)
+ A4IM=0D0
+ FACWW=COMFAC*1D0/(4096D0*PARU(1)**2*16D0*XW1**2)*
+ & (AEM/XW)**4*(SH/SQMW)**2*(SQMZ/SQMW)*SH2
+ IF(MSTP(46).LE.0) FACWW=FACWW*(ASHRE**2+ASHIM**2)
+ IF(MSTP(46).EQ.1) FACWW=FACWW*((ASHRE+ATWRE+AUWRE+A4RE)**2+
+ & (ASHIM+ATWIM+AUWIM+A4IM)**2)
+ IF(MSTP(46).EQ.2) FACWW=FACWW*((ATWRE+AUWRE+A4RE)**2+
+ & (ATWIM+AUWIM+A4IM)**2)
+
+ ELSE
+C...Strongly interacting Z_L/W_L model of Dobado, Herrero, Terron
+ FACWW=COMFAC*(AEM/(16D0*PARU(1)*XW*XW1))**2*(64D0/9D0)*
+ & ABS(A00U-A20U)**2
+ ENDIF
+ FACWW=FACWW*WIDS(24,1)
+
+ DO 240 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 240
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ AVI=AI**2+VI**2
+ DO 230 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 230
+ EJ=KCHG(IABS(J),1)/3D0
+ AJ=SIGN(1D0,EJ)
+ VJ=AJ-4D0*EJ*XWV
+ AVJ=AJ**2+VJ**2
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWW*AVI*AVJ
+ 230 CONTINUE
+ 240 CONTINUE
+ 250 CONTINUE
+
+ ELSEIF(ISUB.EQ.73) THEN
+C...Z0 + W+/- -> Z0 + W+/-
+ IF(SH.LE.2D0*SQMZ+2D0*SQMW) GOTO 280
+
+ IF(MSTP(46).LE.2) THEN
+C...Exact scattering ME:s for on-mass-shell gauge bosons
+ BE2=1D0-2D0*(SQMZ+SQMW)/SH+((SQMZ-SQMW)/SH)**2
+ EP1=1D0-(SQMZ-SQMW)/SH
+ EP2=1D0+(SQMZ-SQMW)/SH
+ TH=-0.5D0*SH*BE2*(1D0-CTH)
+ UH=(SQMZ-SQMW)**2/SH-0.5D0*SH*BE2*(1D0+CTH)
+ IF(MAX(TH,UH).GT.-1D0) GOTO 280
+ THANG=(BE2-EP1*CTH)*(BE2-EP2*CTH)
+ ATHRE=(TH-SQMH)/((TH-SQMH)**2+GMMH**2)*THANG
+ ATHIM=-GMMH/((TH-SQMH)**2+GMMH**2)*THANG
+ ASWRE=-XW1/SQMZ*SH/(SH-SQMW)*(-BE2*(EP1+EP2)**4*CTH+
+ & 1D0/4D0*(BE2+EP1*EP2)**2*((EP1-EP2)**2-4D0*BE2*CTH)+
+ & 2D0*BE2*(BE2+EP1*EP2)*(EP1+EP2)**2*CTH-
+ & 1D0/16D0*SH/SQMW*(EP1**2-EP2**2)**2*(BE2+EP1*EP2)**2)
+ ASWIM=0D0
+ AUWRE=XW1/SQMZ*SH/(UH-SQMW)*(-BE2*(EP2+EP1*CTH)*
+ & (EP1+EP2*CTH)*(BE2+EP1*EP2)+BE2*(EP2+EP1*CTH)*
+ & (BE2+EP1*EP2*CTH)*(2D0*EP2-EP2*CTH+EP1)-
+ & BE2*(EP2+EP1*CTH)**2*(BE2-EP2**2*CTH)-1D0/8D0*
+ & (BE2+EP1*EP2*CTH)**2*((EP1+EP2)**2+2D0*BE2*(1D0-CTH))+
+ & 1D0/32D0*SH/SQMW*(BE2+EP1*EP2*CTH)**2*
+ & (EP1**2-EP2**2)**2-BE2*(EP1+EP2*CTH)*(EP2+EP1*CTH)*
+ & (BE2+EP1*EP2)+BE2*(EP1+EP2*CTH)*(BE2+EP1*EP2*CTH)*
+ & (2D0*EP1-EP1*CTH+EP2)-BE2*(EP1+EP2*CTH)**2*
+ & (BE2-EP1**2*CTH)-1D0/8D0*(BE2+EP1*EP2*CTH)**2*
+ & ((EP1+EP2)**2+2D0*BE2*(1D0-CTH))+1D0/32D0*SH/SQMW*
+ & (BE2+EP1*EP2*CTH)**2*(EP1**2-EP2**2)**2)
+ AUWIM=0D0
+ A4RE=XW1/SQMZ*(EP1**2*EP2**2*(CTH**2-1D0)-
+ & 2D0*BE2*(EP1**2+EP2**2+EP1*EP2)*CTH-2D0*BE2*EP1*EP2)
+ A4IM=0D0
+ FACZW=COMFAC*1D0/(4096D0*PARU(1)**2*4D0*XW1)*(AEM/XW)**4*
+ & (SH/SQMW)**2*SQRT(SQMZ/SQMW)*SH2
+ IF(MSTP(46).LE.0) FACZW=0D0
+ IF(MSTP(46).EQ.1) FACZW=FACZW*((ATHRE+ASWRE+AUWRE+A4RE)**2+
+ & (ATHIM+ASWIM+AUWIM+A4IM)**2)
+ IF(MSTP(46).EQ.2) FACZW=FACZW*((ASWRE+AUWRE+A4RE)**2+
+ & (ASWIM+AUWIM+A4IM)**2)
+
+ ELSE
+C...Strongly interacting Z_L/W_L model of Dobado, Herrero, Terron
+ FACZW=COMFAC*AEM**2/(64D0*PARU(1)**2*XW**2*XW1)*16D0*
+ & ABS(A20U+3D0*A11U*DBLE(CTH))**2
+ ENDIF
+ FACZW=FACZW*WIDS(23,2)
+
+ DO 270 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 270
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ AVI=AI**2+VI**2
+ KCHWI=ISIGN(1,KCHG(IABS(I),1)*ISIGN(1,I))
+ DO 260 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 260
+ EJ=KCHG(IABS(J),1)/3D0
+ AJ=SIGN(1D0,EJ)
+ VJ=AI-4D0*EJ*XWV
+ AVJ=AJ**2+VJ**2
+ KCHWJ=ISIGN(1,KCHG(IABS(J),1)*ISIGN(1,J))
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZW*AVI*VINT(180+J)*WIDS(24,(5-KCHWJ)/2)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACZW*VINT(180+I)*WIDS(24,(5-KCHWI)/2)*AVJ
+ 260 CONTINUE
+ 270 CONTINUE
+ 280 CONTINUE
+
+ ELSEIF(ISUB.EQ.75) THEN
+C...W+ + W- -> gamma + gamma
+
+ ELSEIF(ISUB.EQ.76) THEN
+C...W+ + W- -> Z0 + Z0
+ IF(SH.LE.4.01D0*SQMZ) GOTO 310
+
+ IF(MSTP(46).LE.2) THEN
+C...Exact scattering ME:s for on-mass-shell gauge bosons
+ BE2=SQRT((1D0-4D0*SQMW/SH)*(1D0-4D0*SQMZ/SH))
+ CTH2=CTH**2
+ TH=-0.5D0*SH*(1D0-2D0*(SQMW+SQMZ)/SH-BE2*CTH)
+ UH=-0.5D0*SH*(1D0-2D0*(SQMW+SQMZ)/SH+BE2*CTH)
+ IF(MAX(TH,UH).GT.-1D0) GOTO 310
+ SHANG=4D0*SQRT(SQMW/(SQMZ*XW1))*(1D0-2D0*SQMW/SH)*
+ & (1D0-2D0*SQMZ/SH)
+ ASHRE=(SH-SQMH)/((SH-SQMH)**2+GMMH**2)*SHANG
+ ASHIM=-GMMH/((SH-SQMH)**2+GMMH**2)*SHANG
+ ATWRE=XW1/SQMZ*SH/(TH-SQMW)*((CTH-BE2)**2*(3D0/2D0+BE2/2D0*
+ & CTH-(SQMW+SQMZ)/SH+(SQMW-SQMZ)**2/(SH*SQMW))+4D0*
+ & ((SQMW+SQMZ)/SH*(1D0-3D0*CTH2)+8D0*SQMW*SQMZ/SH2*
+ & (2D0*CTH2-1D0)+4D0*(SQMW**2+SQMZ**2)/SH2*CTH2+
+ & 2D0*(SQMW+SQMZ)/SH*BE2*CTH))
+ ATWIM=0D0
+ AUWRE=XW1/SQMZ*SH/(UH-SQMW)*((CTH+BE2)**2*(3D0/2D0-BE2/2D0*
+ & CTH-(SQMW+SQMZ)/SH+(SQMW-SQMZ)**2/(SH*SQMW))+4D0*
+ & ((SQMW+SQMZ)/SH*(1D0-3D0*CTH2)+8D0*SQMW*SQMZ/SH2*
+ & (2D0*CTH2-1D0)+4D0*(SQMW**2+SQMZ**2)/SH2*CTH2-
+ & 2D0*(SQMW+SQMZ)/SH*BE2*CTH))
+ AUWIM=0D0
+ A4RE=2D0*XW1/SQMZ*(3D0-CTH2-4D0*(SQMW+SQMZ)/SH)
+ A4IM=0D0
+ FACZZ=COMFAC*1D0/(4096D0*PARU(1)**2)*(AEM/XW)**4*
+ & (SH/SQMW)**2*SH2
+ IF(MSTP(46).LE.0) FACZZ=FACZZ*(ASHRE**2+ASHIM**2)
+ IF(MSTP(46).EQ.1) FACZZ=FACZZ*((ASHRE+ATWRE+AUWRE+A4RE)**2+
+ & (ASHIM+ATWIM+AUWIM+A4IM)**2)
+ IF(MSTP(46).EQ.2) FACZZ=FACZZ*((ATWRE+AUWRE+A4RE)**2+
+ & (ATWIM+AUWIM+A4IM)**2)
+
+ ELSE
+C...Strongly interacting Z_L/W_L model of Dobado, Herrero, Terron
+ FACZZ=COMFAC*(AEM/(4D0*PARU(1)*XW))**2*(64D0/9D0)*
+ & ABS(A00U-A20U)**2
+ ENDIF
+ FACZZ=FACZZ*WIDS(23,1)
+
+ DO 300 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 300
+ EI=SIGN(1D0,DBLE(I))*KCHG(IABS(I),1)
+ DO 290 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 290
+ EJ=SIGN(1D0,DBLE(J))*KCHG(IABS(J),1)
+ IF(EI*EJ.GT.0D0) GOTO 290
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACZZ*VINT(180+I)*VINT(180+J)
+ 290 CONTINUE
+ 300 CONTINUE
+ 310 CONTINUE
+
+ ELSEIF(ISUB.EQ.77) THEN
+C...W+/- + W+/- -> W+/- + W+/-
+ IF(SH.LE.4.01D0*SQMW) GOTO 340
+
+ IF(MSTP(46).LE.2) THEN
+C...Exact scattering ME:s for on-mass-shell gauge bosons
+ BE2=1D0-4D0*SQMW/SH
+ BE4=BE2**2
+ CTH2=CTH**2
+ CTH3=CTH**3
+ TH=-0.5D0*SH*BE2*(1D0-CTH)
+ UH=-0.5D0*SH*BE2*(1D0+CTH)
+ IF(MAX(TH,UH).GT.-1D0) GOTO 340
+ SHANG=(1D0+BE2)**2
+ ASHRE=(SH-SQMH)/((SH-SQMH)**2+GMMH**2)*SHANG
+ ASHIM=-GMMH/((SH-SQMH)**2+GMMH**2)*SHANG
+ THANG=(BE2-CTH)**2
+ ATHRE=(TH-SQMH)/((TH-SQMH)**2+GMMH**2)*THANG
+ ATHIM=-GMMH/((TH-SQMH)**2+GMMH**2)*THANG
+ UHANG=(BE2+CTH)**2
+ AUHRE=(UH-SQMH)/((UH-SQMH)**2+GMMH**2)*UHANG
+ AUHIM=-GMMH/((UH-SQMH)**2+GMMH**2)*UHANG
+ SGZANG=1D0/SQMW*BE2*(3D0-BE2)**2*CTH
+ ASGRE=XW*SGZANG
+ ASGIM=0D0
+ ASZRE=XW1*SH/(SH-SQMZ)*SGZANG
+ ASZIM=0D0
+ TGZANG=1D0/SQMW*(BE2*(4D0-2D0*BE2+BE4)+BE2*(4D0-10D0*BE2+
+ & BE4)*CTH+(2D0-11D0*BE2+10D0*BE4)*CTH2+BE2*CTH3)
+ ATGRE=0.5D0*XW*SH/TH*TGZANG
+ ATGIM=0D0
+ ATZRE=0.5D0*XW1*SH/(TH-SQMZ)*TGZANG
+ ATZIM=0D0
+ UGZANG=1D0/SQMW*(BE2*(4D0-2D0*BE2+BE4)-BE2*(4D0-10D0*BE2+
+ & BE4)*CTH+(2D0-11D0*BE2+10D0*BE4)*CTH2-BE2*CTH3)
+ AUGRE=0.5D0*XW*SH/UH*UGZANG
+ AUGIM=0D0
+ AUZRE=0.5D0*XW1*SH/(UH-SQMZ)*UGZANG
+ AUZIM=0D0
+ A4ARE=1D0/SQMW*(1D0+2D0*BE2-6D0*BE2*CTH-CTH2)
+ A4AIM=0D0
+ A4SRE=2D0/SQMW*(1D0+2D0*BE2-CTH2)
+ A4SIM=0D0
+ FWW=COMFAC*1D0/(4096D0*PARU(1)**2)*(AEM/XW)**4*
+ & (SH/SQMW)**2*SH2
+ IF(MSTP(46).LE.0) THEN
+ AWWARE=ASHRE
+ AWWAIM=ASHIM
+ AWWSRE=0D0
+ AWWSIM=0D0
+ ELSEIF(MSTP(46).EQ.1) THEN
+ AWWARE=ASHRE+ATHRE+ASGRE+ASZRE+ATGRE+ATZRE+A4ARE
+ AWWAIM=ASHIM+ATHIM+ASGIM+ASZIM+ATGIM+ATZIM+A4AIM
+ AWWSRE=-ATHRE-AUHRE+ATGRE+ATZRE+AUGRE+AUZRE+A4SRE
+ AWWSIM=-ATHIM-AUHIM+ATGIM+ATZIM+AUGIM+AUZIM+A4SIM
+ ELSE
+ AWWARE=ASGRE+ASZRE+ATGRE+ATZRE+A4ARE
+ AWWAIM=ASGIM+ASZIM+ATGIM+ATZIM+A4AIM
+ AWWSRE=ATGRE+ATZRE+AUGRE+AUZRE+A4SRE
+ AWWSIM=ATGIM+ATZIM+AUGIM+AUZIM+A4SIM
+ ENDIF
+ AWWA2=AWWARE**2+AWWAIM**2
+ AWWS2=AWWSRE**2+AWWSIM**2
+
+ ELSE
+C...Strongly interacting Z_L/W_L model of Dobado, Herrero, Terron
+ FWWA=COMFAC*(AEM/(4D0*PARU(1)*XW))**2*(64D0/9D0)*
+ & ABS(A00U+0.5D0*A20U+4.5D0*A11U*DBLE(CTH))**2
+ FWWS=COMFAC*(AEM/(4D0*PARU(1)*XW))**2*64D0*ABS(A20U)**2
+ ENDIF
+
+ DO 330 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 330
+ EI=SIGN(1D0,DBLE(I))*KCHG(IABS(I),1)
+ DO 320 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 320
+ EJ=SIGN(1D0,DBLE(J))*KCHG(IABS(J),1)
+ IF(EI*EJ.LT.0D0) THEN
+C...W+W-
+ IF(MSTP(45).EQ.1) GOTO 320
+ IF(MSTP(46).LE.2) FACWW=FWW*AWWA2*WIDS(24,1)
+ IF(MSTP(46).GE.3) FACWW=FWWA*WIDS(24,1)
+ ELSE
+C...W+W+/W-W-
+ IF(MSTP(45).EQ.2) GOTO 320
+ IF(MSTP(46).LE.2) FACWW=FWW*AWWS2
+ IF(MSTP(46).GE.3) FACWW=FWWS
+ IF(EI.GT.0D0) FACWW=FACWW*WIDS(24,4)
+ IF(EI.LT.0D0) FACWW=FACWW*WIDS(24,5)
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWW*VINT(180+I)*VINT(180+J)
+ IF(EI*EJ.GT.0D0) SIGH(NCHN)=0.5D0*SIGH(NCHN)
+ 320 CONTINUE
+ 330 CONTINUE
+ 340 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.120) THEN
+ IF(ISUB.EQ.102) THEN
+C...g + g -> h0 (or H0, or A0)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ WDTP13=0D0
+ DO 345 IDC=MDCY(KFHIGG,2),MDCY(KFHIGG,2)+MDCY(KFHIGG,3)-1
+ IF(KFDP(IDC,1).EQ.21.AND.KFDP(IDC,2).EQ.21.AND.
+ & KFDP(IDC,3).EQ.0) WDTP13=PMAS(KFHIGG,2)*BRAT(IDC)
+ 345 CONTINUE
+ IF(WDTP13.EQ.0D0) CALL PYERRM(26,
+ & '(PYSGHG:) did not find Higgs -> g g channel')
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACBW=4D0*COMFAC/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ HI=SHR*WDTP13/32D0
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 350
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 350 CONTINUE
+
+ ELSEIF(ISUB.EQ.103) THEN
+C...gamma + gamma -> h0 (or H0, or A0)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ WDTP14=0D0
+ DO 355 IDC=MDCY(KFHIGG,2),MDCY(KFHIGG,2)+MDCY(KFHIGG,3)-1
+ IF(KFDP(IDC,1).EQ.22.AND.KFDP(IDC,2).EQ.22.AND.
+ & KFDP(IDC,3).EQ.0) WDTP14=PMAS(KFHIGG,2)*BRAT(IDC)
+ 355 CONTINUE
+ IF(WDTP14.EQ.0D0) CALL PYERRM(26,
+ & '(PYSGHG:) did not find Higgs -> gamma gamma channel')
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACBW=4D0*COMFAC/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ HI=SHR*WDTP14*2D0
+ IF(KFAC(1,22)*KFAC(2,22).EQ.0) GOTO 360
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=22
+ ISIG(NCHN,2)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 360 CONTINUE
+
+ ELSEIF(ISUB.EQ.110) THEN
+C...f + fbar -> gamma + h0
+ THUH=MAX(TH*UH,SH*CKIN(3)**2)
+ FACHG=COMFAC*(3D0*AEM**4)/(2D0*PARU(1)**2*XW*SQMW)*SH*THUH
+ FACHG=FACHG*WIDS(KFHIGG,2)
+C...Calculate loop contributions for intermediate gamma* and Z0
+ CIGTOT=DCMPLX(0D0,0D0)
+ CIZTOT=DCMPLX(0D0,0D0)
+ JMAX=3*MSTP(1)+1
+ DO 370 J=1,JMAX
+ IF(J.LE.2*MSTP(1)) THEN
+ FNC=1D0
+ EJ=KCHG(J,1)/3D0
+ AJ=SIGN(1D0,EJ+0.1D0)
+ VJ=AJ-4D0*EJ*XWV
+ BALP=SQM4/(2D0*PMAS(J,1))**2
+ BBET=SH/(2D0*PMAS(J,1))**2
+ ELSEIF(J.LE.3*MSTP(1)) THEN
+ FNC=3D0
+ JL=2*(J-2*MSTP(1))-1
+ EJ=KCHG(10+JL,1)/3D0
+ AJ=SIGN(1D0,EJ+0.1D0)
+ VJ=AJ-4D0*EJ*XWV
+ BALP=SQM4/(2D0*PMAS(10+JL,1))**2
+ BBET=SH/(2D0*PMAS(10+JL,1))**2
+ ELSE
+ BALP=SQM4/(2D0*PMAS(24,1))**2
+ BBET=SH/(2D0*PMAS(24,1))**2
+ ENDIF
+ BABI=1D0/(BALP-BBET)
+ IF(BALP.LT.1D0) THEN
+ F0ALP=DCMPLX(DBLE(ASIN(SQRT(BALP))),0D0)
+ F1ALP=F0ALP**2
+ ELSE
+ F0ALP=DCMPLX(DBLE(LOG(SQRT(BALP)+SQRT(BALP-1D0))),
+ & -DBLE(0.5D0*PARU(1)))
+ F1ALP=-F0ALP**2
+ ENDIF
+ F2ALP=DBLE(SQRT(ABS(BALP-1D0)/BALP))*F0ALP
+ IF(BBET.LT.1D0) THEN
+ F0BET=DCMPLX(DBLE(ASIN(SQRT(BBET))),0D0)
+ F1BET=F0BET**2
+ ELSE
+ F0BET=DCMPLX(DBLE(LOG(SQRT(BBET)+SQRT(BBET-1D0))),
+ & -DBLE(0.5D0*PARU(1)))
+ F1BET=-F0BET**2
+ ENDIF
+ F2BET=DBLE(SQRT(ABS(BBET-1D0)/BBET))*F0BET
+ IF(J.LE.3*MSTP(1)) THEN
+ FIF=DBLE(0.5D0*BABI)+DBLE(BABI**2)*(DBLE(0.5D0*(1D0-BALP+
+ & BBET))*(F1BET-F1ALP)+DBLE(BBET)*(F2BET-F2ALP))
+ CIGTOT=CIGTOT+DBLE(FNC*EJ**2)*FIF
+ CIZTOT=CIZTOT+DBLE(FNC*EJ*VJ)*FIF
+ ELSE
+ TXW=XW/XW1
+ CIGTOT=CIGTOT-0.5*(DBLE(BABI*(1.5D0+BALP))+DBLE(BABI**2)*
+ & (DBLE(1.5D0-3D0*BALP+4D0*BBET)*(F1BET-F1ALP)+
+ & DBLE(BBET*(2D0*BALP+3D0))*(F2BET-F2ALP)))
+ CIZTOT=CIZTOT-DBLE(0.5D0*BABI*XW1)*(DBLE(5D0-TXW+2D0*BALP*
+ & (1D0-TXW))*(1D0+DBLE(2D0*BABI*BBET)*(F2BET-F2ALP))+
+ & DBLE(BABI*(4D0*BBET*(3D0-TXW)-(2D0*BALP-1D0)*(5D0-TXW)))*
+ & (F1BET-F1ALP))
+ ENDIF
+ 370 CONTINUE
+ CIGTOT=CIGTOT/DBLE(SH)
+ CIZTOT=CIZTOT*DBLE(XWC)/DCMPLX(DBLE(SH-SQMZ),DBLE(GMMZ))
+C...Loop over initial flavours
+ DO 380 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 380
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACHG*FCOI*(ABS(DBLE(EI)*CIGTOT+DBLE(VI)*
+ & CIZTOT)**2+AI**2*ABS(CIZTOT)**2)
+ 380 CONTINUE
+
+ ELSEIF(ISUB.EQ.111) THEN
+C...f + fbar -> g + h0 (q + qbar -> g + h0 only)
+ IF(MSTP(38).NE.0) THEN
+C...Simple case: only do gg <-> h exactly.
+ CALL PYWIDT(KFHIGG,SQM4,WDTP,WDTE)
+ WDTP13=0D0
+ DO 385 IDC=MDCY(KFHIGG,2),MDCY(KFHIGG,2)+MDCY(KFHIGG,3)-1
+ IF(KFDP(IDC,1).EQ.21.AND.KFDP(IDC,2).EQ.21.AND.
+ & KFDP(IDC,3).EQ.0) WDTP13=PMAS(KFHIGG,2)*BRAT(IDC)
+ 385 CONTINUE
+ IF(WDTP13.EQ.0D0) CALL PYERRM(26,
+ & '(PYSGHG:) did not find Higgs -> g g channel')
+ FACGH=COMFAC*FACA*(2D0/9D0)*AS*(WDTP13/SQRT(SQM4))*
+ & (TH**2+UH**2)/(SH*SQM4)
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=GMMH/((SQM4-SQMH)**2+GMMH**2)
+ GMMHC=SQRT(SQM4)*WDTP(0)
+ HBW4C=SQRT(SQM4)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))/
+ & ((SQM4-SQMH)**2+GMMHC**2)
+ FACGH=FACGH*HBW4C/HBW4
+ ELSE
+C...Messy case: do full loop integrals
+ A5STUR=0D0
+ A5STUI=0D0
+ DO 390 I=1,2*MSTP(1)
+ SQMQ=PMAS(I,1)**2
+ EPSS=4D0*SQMQ/SH
+ EPSH=4D0*SQMQ/SQMH
+ CALL PYWAUX(1,EPSS,W1SR,W1SI)
+ CALL PYWAUX(1,EPSH,W1HR,W1HI)
+ CALL PYWAUX(2,EPSS,W2SR,W2SI)
+ CALL PYWAUX(2,EPSH,W2HR,W2HI)
+ A5STUR=A5STUR+EPSH*(1D0+SH/(TH+UH)*(W1SR-W1HR)+
+ & (0.25D0-SQMQ/(TH+UH))*(W2SR-W2HR))
+ A5STUI=A5STUI+EPSH*(SH/(TH+UH)*(W1SI-W1HI)+
+ & (0.25D0-SQMQ/(TH+UH))*(W2SI-W2HI))
+ 390 CONTINUE
+ FACGH=COMFAC*FACA/(144D0*PARU(1)**2)*AEM/XW*AS**3*SQMH/SQMW*
+ & SQMH/SH*(UH**2+TH**2)/(UH+TH)**2*(A5STUR**2+A5STUI**2)
+ FACGH=FACGH*WIDS(25,2)
+ ENDIF
+ DO 400 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 400
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGH
+ 400 CONTINUE
+
+ ELSEIF(ISUB.EQ.112) THEN
+C...f + g -> f + h0 (q + g -> q + h0 only)
+ IF(MSTP(38).NE.0) THEN
+C...Simple case: only do gg <-> h exactly.
+ CALL PYWIDT(KFHIGG,SQM4,WDTP,WDTE)
+ WDTP13=0D0
+ DO 405 IDC=MDCY(KFHIGG,2),MDCY(KFHIGG,2)+MDCY(KFHIGG,3)-1
+ IF(KFDP(IDC,1).EQ.21.AND.KFDP(IDC,2).EQ.21.AND.
+ & KFDP(IDC,3).EQ.0) WDTP13=PMAS(KFHIGG,2)*BRAT(IDC)
+ 405 CONTINUE
+ IF(WDTP13.EQ.0D0) CALL PYERRM(26,
+ & '(PYSGHG:) did not find Higgs -> g g channel')
+ FACQH=COMFAC*FACA*(1D0/12D0)*AS*(WDTP13/SQRT(SQM4))*
+ & (SH**2+UH**2)/(-TH*SQM4)
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=GMMH/((SQM4-SQMH)**2+GMMH**2)
+ GMMHC=SQRT(SQM4)*WDTP(0)
+ HBW4C=SQRT(SQM4)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))/
+ & ((SQM4-SQMH)**2+GMMHC**2)
+ FACQH=FACQH*HBW4C/HBW4
+ ELSE
+C...Messy case: do full loop integrals
+ A5TSUR=0D0
+ A5TSUI=0D0
+ DO 410 I=1,2*MSTP(1)
+ SQMQ=PMAS(I,1)**2
+ EPST=4D0*SQMQ/TH
+ EPSH=4D0*SQMQ/SQMH
+ CALL PYWAUX(1,EPST,W1TR,W1TI)
+ CALL PYWAUX(1,EPSH,W1HR,W1HI)
+ CALL PYWAUX(2,EPST,W2TR,W2TI)
+ CALL PYWAUX(2,EPSH,W2HR,W2HI)
+ A5TSUR=A5TSUR+EPSH*(1D0+TH/(SH+UH)*(W1TR-W1HR)+
+ & (0.25D0-SQMQ/(SH+UH))*(W2TR-W2HR))
+ A5TSUI=A5TSUI+EPSH*(TH/(SH+UH)*(W1TI-W1HI)+
+ & (0.25D0-SQMQ/(SH+UH))*(W2TI-W2HI))
+ 410 CONTINUE
+ FACQH=COMFAC*FACA/(384D0*PARU(1)**2)*AEM/XW*AS**3*SQMH/SQMW*
+ & SQMH/(-TH)*(UH**2+SH**2)/(UH+SH)**2*(A5TSUR**2+A5TSUI**2)
+ FACQH=FACQH*WIDS(25,2)
+ ENDIF
+ DO 430 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 430
+ DO 420 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 420
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 420
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQH
+ 420 CONTINUE
+ 430 CONTINUE
+
+ ELSEIF(ISUB.EQ.113) THEN
+C...g + g -> g + h0
+ IF(MSTP(38).NE.0) THEN
+C...Simple case: only do gg <-> h exactly.
+ CALL PYWIDT(KFHIGG,SQM4,WDTP,WDTE)
+ WDTP13=0D0
+ DO 435 IDC=MDCY(KFHIGG,2),MDCY(KFHIGG,2)+MDCY(KFHIGG,3)-1
+ IF(KFDP(IDC,1).EQ.21.AND.KFDP(IDC,2).EQ.21.AND.
+ & KFDP(IDC,3).EQ.0) WDTP13=PMAS(KFHIGG,2)*BRAT(IDC)
+ 435 CONTINUE
+ IF(WDTP13.EQ.0D0) CALL PYERRM(26,
+ & '(PYSGHG:) did not find Higgs -> g g channel')
+ FACGH=COMFAC*FACA*(3D0/16D0)*AS*(WDTP13/SQRT(SQM4))*
+ & (SH**4+TH**4+UH**4+SQM4**4)/(SH*TH*UH*SQM4)
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW4=GMMH/((SQM4-SQMH)**2+GMMH**2)
+ GMMHC=SQRT(SQM4)*WDTP(0)
+ HBW4C=SQRT(SQM4)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))/
+ & ((SQM4-SQMH)**2+GMMHC**2)
+ FACGH=FACGH*HBW4C/HBW4
+ ELSE
+C...Messy case: do full loop integrals
+ A2STUR=0D0
+ A2STUI=0D0
+ A2USTR=0D0
+ A2USTI=0D0
+ A2TUSR=0D0
+ A2TUSI=0D0
+ A4STUR=0D0
+ A4STUI=0D0
+ DO 440 I=1,2*MSTP(1)
+ SQMQ=PMAS(I,1)**2
+ EPSS=4D0*SQMQ/SH
+ EPST=4D0*SQMQ/TH
+ EPSU=4D0*SQMQ/UH
+ EPSH=4D0*SQMQ/SQMH
+ IF(EPSH.LT.1D-6) GOTO 440
+ CALL PYWAUX(1,EPSS,W1SR,W1SI)
+ CALL PYWAUX(1,EPST,W1TR,W1TI)
+ CALL PYWAUX(1,EPSU,W1UR,W1UI)
+ CALL PYWAUX(1,EPSH,W1HR,W1HI)
+ CALL PYWAUX(2,EPSS,W2SR,W2SI)
+ CALL PYWAUX(2,EPST,W2TR,W2TI)
+ CALL PYWAUX(2,EPSU,W2UR,W2UI)
+ CALL PYWAUX(2,EPSH,W2HR,W2HI)
+ CALL PYI3AU(EPSS,TH/UH,Y3STUR,Y3STUI)
+ CALL PYI3AU(EPSS,UH/TH,Y3SUTR,Y3SUTI)
+ CALL PYI3AU(EPST,SH/UH,Y3TSUR,Y3TSUI)
+ CALL PYI3AU(EPST,UH/SH,Y3TUSR,Y3TUSI)
+ CALL PYI3AU(EPSU,SH/TH,Y3USTR,Y3USTI)
+ CALL PYI3AU(EPSU,TH/SH,Y3UTSR,Y3UTSI)
+ CALL PYI3AU(EPSH,SQMH/SH*TH/UH,YHSTUR,YHSTUI)
+ CALL PYI3AU(EPSH,SQMH/SH*UH/TH,YHSUTR,YHSUTI)
+ CALL PYI3AU(EPSH,SQMH/TH*SH/UH,YHTSUR,YHTSUI)
+ CALL PYI3AU(EPSH,SQMH/TH*UH/SH,YHTUSR,YHTUSI)
+ CALL PYI3AU(EPSH,SQMH/UH*SH/TH,YHUSTR,YHUSTI)
+ CALL PYI3AU(EPSH,SQMH/UH*TH/SH,YHUTSR,YHUTSI)
+ W3STUR=YHSTUR-Y3STUR-Y3UTSR
+ W3STUI=YHSTUI-Y3STUI-Y3UTSI
+ W3SUTR=YHSUTR-Y3SUTR-Y3TUSR
+ W3SUTI=YHSUTI-Y3SUTI-Y3TUSI
+ W3TSUR=YHTSUR-Y3TSUR-Y3USTR
+ W3TSUI=YHTSUI-Y3TSUI-Y3USTI
+ W3TUSR=YHTUSR-Y3TUSR-Y3SUTR
+ W3TUSI=YHTUSI-Y3TUSI-Y3SUTI
+ W3USTR=YHUSTR-Y3USTR-Y3TSUR
+ W3USTI=YHUSTI-Y3USTI-Y3TSUI
+ W3UTSR=YHUTSR-Y3UTSR-Y3STUR
+ W3UTSI=YHUTSI-Y3UTSI-Y3STUI
+ B2STUR=SQMQ/SQMH**2*(SH*(UH-SH)/(SH+UH)+2D0*TH*UH*
+ & (UH+2D0*SH)/(SH+UH)**2*(W1TR-W1HR)+(SQMQ-SH/4D0)*
+ & (0.5D0*W2SR+0.5D0*W2HR-W2TR+W3STUR)+SH2*(2D0*SQMQ/
+ & (SH+UH)**2-0.5D0/(SH+UH))*(W2TR-W2HR)+0.5D0*TH*UH/SH*
+ & (W2HR-2D0*W2TR)+0.125D0*(SH-12D0*SQMQ-4D0*TH*UH/SH)*W3TSUR)
+ B2STUI=SQMQ/SQMH**2*(2D0*TH*UH*(UH+2D0*SH)/(SH+UH)**2*
+ & (W1TI-W1HI)+(SQMQ-SH/4D0)*(0.5D0*W2SI+0.5D0*W2HI-W2TI+
+ & W3STUI)+SH2*(2D0*SQMQ/(SH+UH)**2-0.5D0/(SH+UH))*
+ & (W2TI-W2HI)+0.5D0*TH*UH/SH*(W2HI-2D0*W2TI)+0.125D0*
+ & (SH-12D0*SQMQ-4D0*TH*UH/SH)*W3TSUI)
+ B2SUTR=SQMQ/SQMH**2*(SH*(TH-SH)/(SH+TH)+2D0*UH*TH*
+ & (TH+2D0*SH)/(SH+TH)**2*(W1UR-W1HR)+(SQMQ-SH/4D0)*
+ & (0.5D0*W2SR+0.5D0*W2HR-W2UR+W3SUTR)+SH2*(2D0*SQMQ/
+ & (SH+TH)**2-0.5D0/(SH+TH))*(W2UR-W2HR)+0.5D0*UH*TH/SH*
+ & (W2HR-2D0*W2UR)+0.125D0*(SH-12D0*SQMQ-4D0*UH*TH/SH)*W3USTR)
+ B2SUTI=SQMQ/SQMH**2*(2D0*UH*TH*(TH+2D0*SH)/(SH+TH)**2*
+ & (W1UI-W1HI)+(SQMQ-SH/4D0)*(0.5D0*W2SI+0.5D0*W2HI-W2UI+
+ & W3SUTI)+SH2*(2D0*SQMQ/(SH+TH)**2-0.5D0/(SH+TH))*
+ & (W2UI-W2HI)+0.5D0*UH*TH/SH*(W2HI-2D0*W2UI)+0.125D0*
+ & (SH-12D0*SQMQ-4D0*UH*TH/SH)*W3USTI)
+ B2TSUR=SQMQ/SQMH**2*(TH*(UH-TH)/(TH+UH)+2D0*SH*UH*
+ & (UH+2D0*TH)/(TH+UH)**2*(W1SR-W1HR)+(SQMQ-TH/4D0)*
+ & (0.5D0*W2TR+0.5D0*W2HR-W2SR+W3TSUR)+TH2*(2D0*SQMQ/
+ & (TH+UH)**2-0.5D0/(TH+UH))*(W2SR-W2HR)+0.5D0*SH*UH/TH*
+ & (W2HR-2D0*W2SR)+0.125D0*(TH-12D0*SQMQ-4D0*SH*UH/TH)*W3STUR)
+ B2TSUI=SQMQ/SQMH**2*(2D0*SH*UH*(UH+2D0*TH)/(TH+UH)**2*
+ & (W1SI-W1HI)+(SQMQ-TH/4D0)*(0.5D0*W2TI+0.5D0*W2HI-W2SI+
+ & W3TSUI)+TH2*(2D0*SQMQ/(TH+UH)**2-0.5D0/(TH+UH))*
+ & (W2SI-W2HI)+0.5D0*SH*UH/TH*(W2HI-2D0*W2SI)+0.125D0*
+ & (TH-12D0*SQMQ-4D0*SH*UH/TH)*W3STUI)
+ B2TUSR=SQMQ/SQMH**2*(TH*(SH-TH)/(TH+SH)+2D0*UH*SH*
+ & (SH+2D0*TH)/(TH+SH)**2*(W1UR-W1HR)+(SQMQ-TH/4D0)*
+ & (0.5D0*W2TR+0.5D0*W2HR-W2UR+W3TUSR)+TH2*(2D0*SQMQ/
+ & (TH+SH)**2-0.5D0/(TH+SH))*(W2UR-W2HR)+0.5D0*UH*SH/TH*
+ & (W2HR-2D0*W2UR)+0.125D0*(TH-12D0*SQMQ-4D0*UH*SH/TH)*W3UTSR)
+ B2TUSI=SQMQ/SQMH**2*(2D0*UH*SH*(SH+2D0*TH)/(TH+SH)**2*
+ & (W1UI-W1HI)+(SQMQ-TH/4D0)*(0.5D0*W2TI+0.5D0*W2HI-W2UI+
+ & W3TUSI)+TH2*(2D0*SQMQ/(TH+SH)**2-0.5D0/(TH+SH))*
+ & (W2UI-W2HI)+0.5D0*UH*SH/TH*(W2HI-2D0*W2UI)+0.125D0*
+ & (TH-12D0*SQMQ-4D0*UH*SH/TH)*W3UTSI)
+ B2USTR=SQMQ/SQMH**2*(UH*(TH-UH)/(UH+TH)+2D0*SH*TH*
+ & (TH+2D0*UH)/(UH+TH)**2*(W1SR-W1HR)+(SQMQ-UH/4D0)*
+ & (0.5D0*W2UR+0.5D0*W2HR-W2SR+W3USTR)+UH2*(2D0*SQMQ/
+ & (UH+TH)**2-0.5D0/(UH+TH))*(W2SR-W2HR)+0.5D0*SH*TH/UH*
+ & (W2HR-2D0*W2SR)+0.125D0*(UH-12D0*SQMQ-4D0*SH*TH/UH)*W3SUTR)
+ B2USTI=SQMQ/SQMH**2*(2D0*SH*TH*(TH+2D0*UH)/(UH+TH)**2*
+ & (W1SI-W1HI)+(SQMQ-UH/4D0)*(0.5D0*W2UI+0.5D0*W2HI-W2SI+
+ & W3USTI)+UH2*(2D0*SQMQ/(UH+TH)**2-0.5D0/(UH+TH))*
+ & (W2SI-W2HI)+0.5D0*SH*TH/UH*(W2HI-2D0*W2SI)+0.125D0*
+ & (UH-12D0*SQMQ-4D0*SH*TH/UH)*W3SUTI)
+ B2UTSR=SQMQ/SQMH**2*(UH*(SH-UH)/(UH+SH)+2D0*TH*SH*
+ & (SH+2D0*UH)/(UH+SH)**2*(W1TR-W1HR)+(SQMQ-UH/4D0)*
+ & (0.5D0*W2UR+0.5D0*W2HR-W2TR+W3UTSR)+UH2*(2D0*SQMQ/
+ & (UH+SH)**2-0.5D0/(UH+SH))*(W2TR-W2HR)+0.5D0*TH*SH/UH*
+ & (W2HR-2D0*W2TR)+0.125D0*(UH-12D0*SQMQ-4D0*TH*SH/UH)*W3TUSR)
+ B2UTSI=SQMQ/SQMH**2*(2D0*TH*SH*(SH+2D0*UH)/(UH+SH)**2*
+ & (W1TI-W1HI)+(SQMQ-UH/4D0)*(0.5D0*W2UI+0.5D0*W2HI-W2TI+
+ & W3UTSI)+UH2*(2D0*SQMQ/(UH+SH)**2-0.5D0/(UH+SH))*
+ & (W2TI-W2HI)+0.5D0*TH*SH/UH*(W2HI-2D0*W2TI)+0.125D0*
+ & (UH-12D0*SQMQ-4D0*TH*SH/UH)*W3TUSI)
+ B4STUR=0.25D0*EPSH*(-2D0/3D0+0.25D0*(EPSH-1D0)*
+ & (W2SR-W2HR+W3STUR))
+ B4STUI=0.25D0*EPSH*0.25D0*(EPSH-1D0)*(W2SI-W2HI+W3STUI)
+ B4TUSR=0.25D0*EPSH*(-2D0/3D0+0.25D0*(EPSH-1D0)*
+ & (W2TR-W2HR+W3TUSR))
+ B4TUSI=0.25D0*EPSH*0.25D0*(EPSH-1D0)*(W2TI-W2HI+W3TUSI)
+ B4USTR=0.25D0*EPSH*(-2D0/3D0+0.25D0*(EPSH-1D0)*
+ & (W2UR-W2HR+W3USTR))
+ B4USTI=0.25D0*EPSH*0.25D0*(EPSH-1D0)*(W2UI-W2HI+W3USTI)
+ A2STUR=A2STUR+B2STUR+B2SUTR
+ A2STUI=A2STUI+B2STUI+B2SUTI
+ A2USTR=A2USTR+B2USTR+B2UTSR
+ A2USTI=A2USTI+B2USTI+B2UTSI
+ A2TUSR=A2TUSR+B2TUSR+B2TSUR
+ A2TUSI=A2TUSI+B2TUSI+B2TSUI
+ A4STUR=A4STUR+B4STUR+B4USTR+B4TUSR
+ A4STUI=A4STUI+B4STUI+B4USTI+B4TUSI
+ 440 CONTINUE
+ FACGH=COMFAC*FACA*3D0/(128D0*PARU(1)**2)*AEM/XW*AS**3*
+ & SQMH/SQMW*SQMH**3/(SH*TH*UH)*(A2STUR**2+A2STUI**2+A2USTR**2+
+ & A2USTI**2+A2TUSR**2+A2TUSI**2+A4STUR**2+A4STUI**2)
+ FACGH=FACGH*WIDS(25,2)
+ ENDIF
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 450
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGH
+ 450 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.170) THEN
+ IF(ISUB.EQ.121) THEN
+C...g + g -> Q + Qbar + h0
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 460
+ IA=KFPR(ISUBSV,2)
+ PMF=PYMRUN(IA,SH)
+ FACQQH=COMFAC*(4D0*PARU(1)*AEM/XW)*(4D0*PARU(1)*AS)**2*
+ & (0.5D0*PMF/PMAS(24,1))**2
+ WID2=1D0
+ IF(IA.EQ.6.OR.IA.EQ.7.OR.IA.EQ.8) WID2=WIDS(IA,1)
+ FACQQH=FACQQH*WID2
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) THEN
+ IKFI=1
+ IF(IA.LE.10.AND.MOD(IA,2).EQ.0) IKFI=2
+ IF(IA.GT.10) IKFI=3
+ FACQQH=FACQQH*PARU(150+10*IHIGG+IKFI)**2
+ IF(IMSS(1).NE.0.AND.IA.EQ.5) THEN
+ FACQQH=FACQQH/(1D0+RMSS(41))**2
+ IF(IHIGG.NE.3) THEN
+ FACQQH=FACQQH*(1D0+RMSS(41)*PARU(152+10*IHIGG)/
+ & PARU(151+10*IHIGG))**2
+ ENDIF
+ ENDIF
+ ENDIF
+ CALL PYQQBH(WTQQBH)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACBW=(1D0/PARU(1))*VINT(2)*HF/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQH*WTQQBH*FACBW
+ 460 CONTINUE
+
+ ELSEIF(ISUB.EQ.122) THEN
+C...q + qbar -> Q + Qbar + h0
+ IA=KFPR(ISUBSV,2)
+ PMF=PYMRUN(IA,SH)
+ FACQQH=COMFAC*(4D0*PARU(1)*AEM/XW)*(4D0*PARU(1)*AS)**2*
+ & (0.5D0*PMF/PMAS(24,1))**2
+ WID2=1D0
+ IF(IA.EQ.6.OR.IA.EQ.7.OR.IA.EQ.8) WID2=WIDS(IA,1)
+ FACQQH=FACQQH*WID2
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) THEN
+ IKFI=1
+ IF(IA.LE.10.AND.MOD(IA,2).EQ.0) IKFI=2
+ IF(IA.GT.10) IKFI=3
+ FACQQH=FACQQH*PARU(150+10*IHIGG+IKFI)**2
+ IF(IMSS(1).NE.0.AND.IA.EQ.5) THEN
+ FACQQH=FACQQH/(1D0+RMSS(41))**2
+ IF(IHIGG.NE.3) THEN
+ FACQQH=FACQQH*(1D0+RMSS(41)*PARU(152+10*IHIGG)/
+ & PARU(151+10*IHIGG))**2
+ ENDIF
+ ENDIF
+ ENDIF
+ CALL PYQQBH(WTQQBH)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACBW=(1D0/PARU(1))*VINT(2)*HF/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ DO 470 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 470
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQH*WTQQBH*FACBW
+ 470 CONTINUE
+
+ ELSEIF(ISUB.EQ.123) THEN
+C...f + f' -> f + f' + h0 (or H0, or A0) (Z0 + Z0 -> h0 as
+C...inner process)
+ FACNOR=COMFAC*(4D0*PARU(1)*AEM/(XW*XW1))**3*SQMZ/32D0
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) FACNOR=FACNOR*
+ & PARU(154+10*IHIGG)**2
+ FACPRP=1D0/((VINT(215)-VINT(204)**2)*
+ & (VINT(216)-VINT(209)**2))**2
+ FACZZ1=FACNOR*FACPRP*(0.5D0*TAUP*VINT(2))*VINT(219)
+ FACZZ2=FACNOR*FACPRP*VINT(217)*VINT(218)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACBW=(1D0/PARU(1))*VINT(2)*HF/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ DO 490 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 490
+ IA=IABS(I)
+ DO 480 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 480
+ JA=IABS(J)
+ EI=KCHG(IA,1)*ISIGN(1,I)/3D0
+ AI=SIGN(1D0,KCHG(IA,1)+0.5D0)*ISIGN(1,I)
+ VI=AI-4D0*EI*XWV
+ EJ=KCHG(JA,1)*ISIGN(1,J)/3D0
+ AJ=SIGN(1D0,KCHG(JA,1)+0.5D0)*ISIGN(1,J)
+ VJ=AJ-4D0*EJ*XWV
+ FACLR1=(VI**2+AI**2)*(VJ**2+AJ**2)+4D0*VI*AI*VJ*AJ
+ FACLR2=(VI**2+AI**2)*(VJ**2+AJ**2)-4D0*VI*AI*VJ*AJ
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=(FACLR1*FACZZ1+FACLR2*FACZZ2)*FACBW
+ 480 CONTINUE
+ 490 CONTINUE
+
+ ELSEIF(ISUB.EQ.124) THEN
+C...f + f' -> f" + f"' + h0 (or H0, or A0) (W+ + W- -> h0 as
+C...inner process)
+ FACNOR=COMFAC*(4D0*PARU(1)*AEM/XW)**3*SQMW
+ IF(MSTP(4).GE.1.OR.IHIGG.GE.2) FACNOR=FACNOR*
+ & PARU(155+10*IHIGG)**2
+ FACPRP=1D0/((VINT(215)-VINT(204)**2)*
+ & (VINT(216)-VINT(209)**2))**2
+ FACWW=FACNOR*FACPRP*(0.5D0*TAUP*VINT(2))*VINT(219)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACBW=(1D0/PARU(1))*VINT(2)*HF/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ DO 510 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 510
+ EI=SIGN(1D0,DBLE(I))*KCHG(IABS(I),1)
+ DO 500 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 500
+ EJ=SIGN(1D0,DBLE(J))*KCHG(IABS(J),1)
+ IF(EI*EJ.GT.0D0) GOTO 500
+ FACLR=VINT(180+I)*VINT(180+J)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACLR*FACWW*FACBW
+ 500 CONTINUE
+ 510 CONTINUE
+
+ ELSEIF(ISUB.EQ.143) THEN
+C...f + fbar' -> H+/-
+ SQMHC=PMAS(37,1)**2
+ CALL PYWIDT(37,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMHC)**2+HS**2)
+ HP=AEM/(8D0*XW)*SH/SQMW*SH
+ DO 530 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 530
+ IA=IABS(I)
+ IM=(MOD(IA,10)+1)/2
+ DO 520 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 520
+ JA=IABS(J)
+ JM=(MOD(JA,10)+1)/2
+ IF(I*J.GT.0.OR.IA.EQ.JA.OR.IM.NE.JM) GOTO 520
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 520
+ IF(MOD(IA,2).EQ.0) THEN
+ IU=IA
+ IL=JA
+ ELSE
+ IU=JA
+ IL=IA
+ ENDIF
+ RML=PYMRUN(IL,SH)**2/SH
+ RMU=PYMRUN(IU,SH)**2/SH
+ HI=HP*(RML*PARU(141)**2+RMU/PARU(141)**2)
+ IF(IA.LE.10) HI=HI*FACA/3D0
+ KCHHC=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHHC)/2)+WDTE(0,4))
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 520 CONTINUE
+ 530 CONTINUE
+
+ ELSEIF(ISUB.EQ.161) THEN
+C...f + g -> f' + H+/- (b + g -> t + H+/- only)
+C...(choice of only b and t to avoid kinematics problems)
+ FHCQ=COMFAC*FACA*AS*AEM/XW*1D0/24
+C...H propagator: as simulated in PYOFSH and as desired
+ SQMHC=PMAS(37,1)**2
+ GMMHC=PMAS(37,1)*PMAS(37,2)
+ HBW4=GMMHC/((SQM4-SQMHC)**2+GMMHC**2)
+ CALL PYWIDT(37,SQM4,WDTP,WDTE)
+ GMMHCC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMHCC/((SQM4-SQMHC)**2+GMMHCC**2)
+ FHCQ=FHCQ*HBW4C/HBW4
+ Q2RM=SH
+ IF(MSTP(32).EQ.12) Q2RM=PARP(194)
+ DO 550 I=MMINA,MMAXA
+ IA=IABS(I)
+ IF(IA.NE.5) GOTO 550
+ SQML=PYMRUN(IA,Q2RM)**2
+ IUA=IA+MOD(IA,2)
+ SQMQ=PYMRUN(IUA,Q2RM)**2
+ FACHCQ=FHCQ*(SQML*PARU(141)**2+SQMQ/PARU(141)**2)/SQMW*
+ & (SH/(SQMQ-UH)+2D0*SQMQ*(SQMHC-UH)/(SQMQ-UH)**2+(SQMQ-UH)/SH-
+ & 2D0*SQMQ/(SQMQ-UH)+2D0*(SQMHC-UH)/(SQMQ-UH)*
+ & (SQMHC-SQMQ-SH)/SH)
+ KCHHC=ISIGN(1,KCHG(IA,1)*ISIGN(1,I))
+ DO 540 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 540
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 540
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACHCQ*WIDS(37,(5-KCHHC)/2)
+ IF(IUA.EQ.6) SIGH(NCHN)=SIGH(NCHN)*WIDS(6,(5+KCHHC)/2)
+ 540 CONTINUE
+ 550 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.402) THEN
+ IF(ISUB.EQ.401) THEN
+C... g + g -> t + bbar + H-
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 560
+ IA=KFPR(ISUBSV,2)
+ CALL PYSTBH(WTTBH)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=(1D0/PARU(1))*VINT(2)*HS/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=2d0*COMFAC*WTTBH*FACBW
+c Since we don't know yet if H+ or H-, assume H+
+c when calculating suppression due to closed channels.
+ SIGH(NCHN)=SIGH(NCHN)*WIDS(37,2)*WIDS(6,3)
+ IF(ABS(WIDS(37,2)-WIDS(37,3))
+ & .GE.1D-6*(WIDS(37,2)+WIDS(37,3)).OR.
+ & ABS(WIDS(6,2)-WIDS(6,3))
+ & .GE.1D-6*(WIDS(6,2)+WIDS(6,3))) THEN
+ WRITE(*,*)'Error: Process 401 cannot handle different'
+ WRITE(*,*)'decays for H+ and H- or t and tbar.'
+ WRITE(*,*)'Execution stopped.'
+ CALL PYSTOP(108)
+ END IF
+ 560 CONTINUE
+
+ ELSEIF(ISUB.EQ.402) THEN
+C... q + qbar -> t + bbar + H-
+ IA=KFPR(ISUBSV,2)
+ CALL PYSTBH(WTTBH)
+ CALL PYWIDT(KFHIGG,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=(1D0/PARU(1))*VINT(2)*HS/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFHIGG,1)).GT.PARP(48)*PMAS(KFHIGG,2))
+ & FACBW=0D0
+ DO 570 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 570
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=2d0*COMFAC*WTTBH*FACBW
+c Since we don't know yet if H+ or H-, assume H+
+c when calculating suppression due to closed channels.
+ SIGH(NCHN)=SIGH(NCHN)*WIDS(37,2)*WIDS(6,3)
+ IF(ABS(WIDS(37,2)-WIDS(37,3))/(WIDS(37,2)+WIDS(37,3))
+ & .GE.1D-6.OR.
+ & ABS(WIDS(6,2)-WIDS(6,3))/(WIDS(6,2)+WIDS(6,3))
+ & .GE.1D-6) THEN
+ WRITE(*,*)'Error: Process 402 cannot handle different'
+ WRITE(*,*)'decays for H+ and H- or t and tbar.'
+ WRITE(*,*)'Execution stopped.'
+ CALL PYSTOP(108)
+ END IF
+ 570 CONTINUE
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSGSU
+C...Subprocess cross sections for SUSY processes,
+C...including Higgs pair production.
+C...Auxiliary to PYSIGH.
+
+ SUBROUTINE PYSGSU(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,/PYINT2/,/PYINT3/,
+ &/PYINT4/,/PYMSSM/,/PYSSMT/,/PYSGCM/
+C...Local arrays and complex variables
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5)
+ COMPLEX*16 OLPP,ORPP,OLP,ORP,OL,OR,QLL,QLR
+ COMPLEX*16 QRR,QRL,GLIJ,GRIJ,PROPW,PROPZ
+ COMPLEX*16 ZMIXC(4,4),UMIXC(2,2),VMIXC(2,2)
+
+CMRENNA++
+C...Z and W width, combinations of weak mixing angle
+ ZWID=PMAS(23,2)
+ WWID=PMAS(24,2)
+ TANW=SQRT(XW/XW1)
+ CT2W=(1D0-2D0*XW)/(2D0*XW/TANW)
+
+C...Convert almost equivalent SUSY processes into each other
+C...Extract differences in flavours and couplings
+
+C...Sleptons and sneutrinos
+ IF(ISUB.EQ.201.OR.ISUB.EQ.204.OR.ISUB.EQ.207) THEN
+ KFID=MOD(KFPR(ISUB,1),KSUSY1)
+ ISUB=201
+ ILR=0
+ ELSEIF(ISUB.EQ.202.OR.ISUB.EQ.205.OR.ISUB.EQ.208) THEN
+ KFID=MOD(KFPR(ISUB,1),KSUSY1)
+ ISUB=201
+ ILR=1
+ ELSEIF(ISUB.EQ.203.OR.ISUB.EQ.206.OR.ISUB.EQ.209) THEN
+ KFID=MOD(KFPR(ISUB,1),KSUSY1)
+ ISUB=203
+ ELSEIF(ISUB.GE.210.AND.ISUB.LE.212) THEN
+ IF(ISUB.EQ.210) THEN
+ RKF=2.0D0
+ ELSEIF(ISUB.EQ.211) THEN
+ RKF=SFMIX(15,1)**2
+ ELSEIF(ISUB.EQ.212) THEN
+ RKF=SFMIX(15,2)**2
+ ENDIF
+ ISUB=210
+ ELSEIF(ISUB.EQ.213.OR.ISUB.EQ.214) THEN
+ IF(ISUB.EQ.213) THEN
+ KFID=MOD(KFPR(ISUB,1),KSUSY1)
+ RKF=2.0D0
+ ELSEIF(ISUB.EQ.214) THEN
+ KFID=16
+ RKF=1.0D0
+ ENDIF
+ ISUB=213
+
+C...Neutralinos
+ ELSEIF(ISUB.GE.216.AND.ISUB.LE.225) THEN
+ IF(ISUB.EQ.216) THEN
+ IZID1=1
+ IZID2=1
+ ELSEIF(ISUB.EQ.217) THEN
+ IZID1=2
+ IZID2=2
+ ELSEIF(ISUB.EQ.218) THEN
+ IZID1=3
+ IZID2=3
+ ELSEIF(ISUB.EQ.219) THEN
+ IZID1=4
+ IZID2=4
+ ELSEIF(ISUB.EQ.220) THEN
+ IZID1=1
+ IZID2=2
+ ELSEIF(ISUB.EQ.221) THEN
+ IZID1=1
+ IZID2=3
+ ELSEIF(ISUB.EQ.222) THEN
+ IZID1=1
+ IZID2=4
+ ELSEIF(ISUB.EQ.223) THEN
+ IZID1=2
+ IZID2=3
+ ELSEIF(ISUB.EQ.224) THEN
+ IZID1=2
+ IZID2=4
+ ELSEIF(ISUB.EQ.225) THEN
+ IZID1=3
+ IZID2=4
+ ENDIF
+ ISUB=216
+
+C...Charginos
+ ELSEIF(ISUB.GE.226.AND.ISUB.LE.228) THEN
+ IF(ISUB.EQ.226) THEN
+ IZID1=1
+ IZID2=1
+ ELSEIF(ISUB.EQ.227) THEN
+ IZID1=2
+ IZID2=2
+ ELSEIF(ISUB.EQ.228) THEN
+ IZID1=1
+ IZID2=2
+ ENDIF
+ ISUB=226
+
+C...Neutralino + chargino
+ ELSEIF(ISUB.GE.229.AND.ISUB.LE.236) THEN
+ IF(ISUB.EQ.229) THEN
+ IZID1=1
+ IZID2=1
+ ELSEIF(ISUB.EQ.230) THEN
+ IZID1=1
+ IZID2=2
+ ELSEIF(ISUB.EQ.231) THEN
+ IZID1=1
+ IZID2=3
+ ELSEIF(ISUB.EQ.232) THEN
+ IZID1=1
+ IZID2=4
+ ELSEIF(ISUB.EQ.233) THEN
+ IZID1=2
+ IZID2=1
+ ELSEIF(ISUB.EQ.234) THEN
+ IZID1=2
+ IZID2=2
+ ELSEIF(ISUB.EQ.235) THEN
+ IZID1=2
+ IZID2=3
+ ELSEIF(ISUB.EQ.236) THEN
+ IZID1=2
+ IZID2=4
+ ENDIF
+ ISUB=229
+
+C...Gluino + neutralino
+ ELSEIF(ISUB.GE.237.AND.ISUB.LE.240) THEN
+ IF(ISUB.EQ.237) THEN
+ IZID=1
+ ELSEIF(ISUB.EQ.238) THEN
+ IZID=2
+ ELSEIF(ISUB.EQ.239) THEN
+ IZID=3
+ ELSEIF(ISUB.EQ.240) THEN
+ IZID=4
+ ENDIF
+ ISUB=237
+
+C...Gluino + chargino
+ ELSEIF(ISUB.GE.241.AND.ISUB.LE.242) THEN
+ IF(ISUB.EQ.241) THEN
+ IZID=1
+ ELSEIF(ISUB.EQ.242) THEN
+ IZID=2
+ ENDIF
+ ISUB=241
+
+C...Squark + neutralino
+ ELSEIF(ISUB.GE.246.AND.ISUB.LE.253) THEN
+ ILR=0
+ IF(MOD(ISUB,2).NE.0) ILR=1
+ IF(ISUB.LE.247) THEN
+ IZID=1
+ ELSEIF(ISUB.LE.249) THEN
+ IZID=2
+ ELSEIF(ISUB.LE.251) THEN
+ IZID=3
+ ELSEIF(ISUB.LE.253) THEN
+ IZID=4
+ ENDIF
+ ISUB=246
+ RKF=5D0
+
+C...Squark + chargino
+ ELSEIF(ISUB.GE.254.AND.ISUB.LE.257) THEN
+ IF(ISUB.LE.255) THEN
+ IZID=1
+ ELSEIF(ISUB.LE.257) THEN
+ IZID=2
+ ENDIF
+ IF(MOD(ISUB,2).EQ.0) THEN
+ ILR=0
+ ELSE
+ ILR=1
+ ENDIF
+ ISUB=254
+ RKF=5D0
+
+C...Squark + gluino
+ ELSEIF(ISUB.EQ.258.OR.ISUB.EQ.259) THEN
+ ISUB=258
+ RKF=4D0
+
+C...Stops
+ ELSEIF(ISUB.EQ.261.OR.ISUB.EQ.262) THEN
+ ILR=0
+ IF(ISUB.EQ.262) ILR=1
+ ISUB=261
+ ELSEIF(ISUB.EQ.265) THEN
+ ISUB=264
+
+C...Squarks
+ ELSEIF(ISUB.GE.271.AND.ISUB.LE.280) THEN
+ ILR=0
+ IF(ISUB.LE.273) THEN
+ IF(ISUB.EQ.273) ILR=1
+ ISUB=271
+ RKF=16D0
+ ELSEIF(ISUB.LE.276) THEN
+ IF(ISUB.EQ.276) ILR=1
+ ISUB=274
+ RKF=16D0
+ ELSEIF(ISUB.LE.278) THEN
+ IF(ISUB.EQ.278) ILR=1
+ ISUB=277
+ RKF=4D0
+ ELSE
+ IF(ISUB.EQ.280) ILR=1
+ ISUB=279
+ RKF=4D0
+ ENDIF
+C...Sbottoms
+ ELSEIF(ISUB.GE.281.AND.ISUB.LE.296) THEN
+ ILR=0
+ IF(ISUB.LE.283) THEN
+ IF(ISUB.EQ.283) ILR=1
+ ISUB=271
+ RKF=4D0
+ ELSEIF(ISUB.LE.286) THEN
+ IF(ISUB.EQ.286) ILR=1
+ ISUB=274
+ RKF=4D0
+ ELSEIF(ISUB.LE.288) THEN
+ IF(ISUB.EQ.288) ILR=1
+ ISUB=277
+ RKF=1D0
+ ELSEIF(ISUB.LE.290) THEN
+ IF(ISUB.EQ.290) ILR=1
+ ISUB=279
+ RKF=1D0
+ ELSEIF(ISUB.LE.293) THEN
+ IF(ISUB.EQ.293) ILR=1
+ ISUB=271
+ RKF=1D0
+ ELSEIF(ISUB.EQ.296) THEN
+ ILR=1
+ ISUB=274
+ RKF=1D0
+C...Squark + gluino
+ ELSEIF(ISUB.EQ.294.OR.ISUB.EQ.295) THEN
+ ISUB=258
+ RKF=1D0
+ ENDIF
+C...H+/- + H0
+ ELSEIF(ISUB.EQ.297.OR.ISUB.EQ.298) THEN
+ IF(ISUB.EQ.297) THEN
+ RKF=.5D0*PARU(195)**2
+ ELSEIF(ISUB.EQ.298) THEN
+ RKF=.5D0*(1D0-PARU(195)**2)
+ ENDIF
+ ISUB=210
+C...A0 + H0
+ ELSEIF(ISUB.EQ.299.OR.ISUB.EQ.300) THEN
+ IF(ISUB.EQ.299) THEN
+ RKF=PARU(186)**2
+ KFID=25
+ ELSEIF(ISUB.EQ.300) THEN
+ RKF=PARU(187)**2
+ KFID=35
+ ENDIF
+ ISUB=213
+C...H+ + H-
+ ELSEIF(ISUB.EQ.301) THEN
+ KFID=37
+ RKF=1D0
+ ISUB=201
+ ENDIF
+
+C...Supersymmetric processes - all of type 2 -> 2 :
+C...correct final-state Breit-Wigners from fixed to running width.
+ IF(MSTP(42).GT.0) THEN
+ DO 100 I=1,2
+ KFLW=KFPR(ISUBSV,I)
+ KCW=PYCOMP(KFLW)
+ IF(PMAS(KCW,2).LT.PARP(41)) GOTO 100
+ IF(I.EQ.1) SQMI=SQM3
+ IF(I.EQ.2) SQMI=SQM4
+ SQMS=PMAS(KCW,1)**2
+ GMMS=PMAS(KCW,1)*PMAS(KCW,2)
+ HBWS=GMMS/((SQMI-SQMS)**2+GMMS**2)
+ CALL PYWIDT(KFLW,SQMI,WDTP,WDTE)
+ GMMI=SQRT(SQMI)*WDTP(0)
+ HBWI=GMMI/((SQMI-SQMS)**2+GMMI**2)
+ COMFAC=COMFAC*(HBWI/HBWS)
+ 100 CONTINUE
+ ENDIF
+
+C...Differential cross section expressions.
+
+ IF(ISUB.LE.210) THEN
+ IF(ISUB.EQ.201) THEN
+C...f + fbar -> e_L + e_Lbar
+ COMFAC=COMFAC*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ DO 130 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 130
+ EI=KCHG(IA,1)/3D0
+ TT3I=SIGN(1D0,EI+1D-6)/2D0
+ EJ=-1D0
+ TT3J=-1D0/2D0
+ FCOL=1D0
+C...Color factor for e+ e-
+ IF(IA.GE.11) FCOL=3D0
+ IF(ISUBSV.EQ.301) THEN
+ A1=1D0
+ A2=0D0
+ ELSEIF(ILR.EQ.1) THEN
+ A1=SFMIX(KFID,3)**2
+ A2=SFMIX(KFID,4)**2
+ ELSEIF(ILR.EQ.0) THEN
+ A1=SFMIX(KFID,1)**2
+ A2=SFMIX(KFID,2)**2
+ ENDIF
+ XLQ=(TT3J-EJ*XW)*A1
+ XRQ=(-EJ*XW)*A2
+ XLF=(TT3I-EI*XW)
+ XRF=(-EI*XW)
+ TAA=(EI*EJ)**2*(POLL+POLR)
+ TZZ=(XLF**2*POLL+XRF**2*POLR)*(XLQ+XRQ)**2/XW**2/XW1**2
+ TZZ=TZZ/((1D0-SQMZ/SH)**2+SQMZ*ZWID/SH**2)
+ TAZ=2D0*EI*EJ*(XLQ+XRQ)*(XLF*POLL+XRF*POLR)/XW/XW1
+ TAZ=TAZ/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)*(1D0-SQMZ/SH)
+ TNN=0.0D0
+ TAN=0.0D0
+ TZN=0.0D0
+ IF(IA.GE.11.AND.IA.LE.18.AND.KFID.EQ.IA) THEN
+ FAC2=SQRT(2D0)
+ TNN1=0D0
+ TNN2=0D0
+ TNN3=0D0
+ DO 120 II=1,4
+ DK=1D0/(TH-SMZ(II)**2)
+ FLEK=-FAC2*(TT3I*ZMIX(II,2)-TANW*(TT3I-EI)*
+ & ZMIX(II,1))
+ FREK=FAC2*TANW*EI*ZMIX(II,1)
+ TNN1=TNN1+FLEK**2*DK
+ TNN2=TNN2+FREK**2*DK
+ DO 110 JJ=1,4
+ DL=1D0/(TH-SMZ(JJ)**2)
+ FLEL=-FAC2*(TT3J*ZMIX(JJ,2)-TANW*(TT3J-EJ)*
+ & ZMIX(JJ,1))
+ FREL=FAC2*TANW*EJ*ZMIX(JJ,1)
+ TNN3=TNN3+FLEK*FREK*FLEL*FREL*DK*DL*SMZ(II)*SMZ(JJ)
+ 110 CONTINUE
+ 120 CONTINUE
+ TNN=(UH*TH-SQM3*SQM4)*(A1**2*TNN1**2*POLL+
+ & A2**2*TNN2**2*POLR)
+ TNN=(TNN+SH*A1*A2*TNN3*((1D0-PARJ(131))*(1D0-PARJ(132))+
+ & (1D0+PARJ(131))*(1D0+PARJ(132))))/4D0/XW**2
+ TZN=(UH*TH-SQM3*SQM4)*(XLQ+XRQ)*
+ & (TNN1*XLF*A1*POLL+TNN2*XRF*A2*POLR)
+ TZN=TZN/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)*
+ & (1D0-SQMZ/SH)/SH
+ TZN=TZN/XW**2/XW1
+ TAN=EI*EJ*(UH*TH-SQM3*SQM4)/SH*(A1*TNN1*POLL+
+ & A2*TNN2*POLR)/XW
+ ENDIF
+ FACQQ1=COMFAC*AEM**2*(TAA+TZZ+TAZ)*FCOL/3D0
+ FACQQ1=FACQQ1*( UH*TH-SQM3*SQM4 )/SH**2
+ FACQQ2=COMFAC*AEM**2*(TNN+TZN+TAN)*FCOL/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1+FACQQ2
+ 130 CONTINUE
+
+ ELSEIF(ISUB.EQ.203) THEN
+C...f + fbar -> e_L + e_Rbar
+ DO 160 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 160
+ EI=KCHG(IABS(I),1)/3D0
+ TT3I=SIGN(1D0,EI)/2D0
+ EJ=-1
+ TT3J=-1D0/2D0
+ FCOL=1D0
+C...Color factor for e+ e-
+ IF(IA.GE.11) FCOL=3D0
+ A1=SFMIX(KFID,1)**2
+ A2=SFMIX(KFID,2)**2
+ XLQ=(TT3J-EJ*XW)
+ XRQ=(-EJ*XW)
+ XLF=(TT3I-EI*XW)
+ XRF=(-EI*XW)
+ TZZ=(XLF**2*POLL+XRF**2*POLR)*(XLQ-XRQ)**2
+ & /XW**2/XW1**2*A1*A2
+ TZZ=TZZ/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)
+ TNN=0.0D0
+ TZN=0.0D0
+ TNNA=0D0
+ TNNB=0D0
+ IF(IA.GE.11.AND.IA.LE.18.AND.KFID.EQ.IA) THEN
+ FAC2=SQRT(2D0)
+ TNN1=0D0
+ TNN2=0D0
+ TNN3=0D0
+ DO 150 II=1,4
+ DK=1D0/(TH-SMZ(II)**2)
+ FLEK=-FAC2*(TT3I*ZMIX(II,2)-TANW*(TT3I-EI)*
+ & ZMIX(II,1))
+ FREK=FAC2*TANW*EI*ZMIX(II,1)
+ TNN1=TNN1+FLEK**2*DK
+ TNN2=TNN2+FREK**2*DK
+ DO 140 JJ=1,4
+ DL=1D0/(TH-SMZ(JJ)**2)
+ FLEL=-FAC2*(TT3J*ZMIX(JJ,2)-TANW*(TT3J-EJ)*
+ & ZMIX(JJ,1))
+ FREL=FAC2*TANW*EJ*ZMIX(JJ,1)
+ TNN3=TNN3+FLEK*FREK*FLEL*FREL*DK*DL*SMZ(II)*SMZ(JJ)
+ 140 CONTINUE
+ 150 CONTINUE
+ TNN=(UH*TH-SQM3*SQM4)*A1*A2*(TNN2**2*POLR+TNN1**2*POLL)
+ TNNA=(TNN+SH*(A1**2*POLLL+A2**2*POLRR)*TNN3)/4D0
+ TNNB=(TNN+SH*(A1**2*POLRR+A2**2*POLLL)*TNN3)/4D0
+ TZN=(UH*TH-SQM3*SQM4)*A1*A2
+ TZN=TZN*(XLQ-XRQ)*(XLF*TNN1*POLL-XRF*TNN2*POLR)/XW1
+ TZN=TZN/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)*
+ & (1D0-SQMZ/SH)/SH
+ ENDIF
+ FACQQ0=COMFAC*AEM**2*TZZ*FCOL/3D0*(UH*TH-SQM3*SQM4)/SH2
+ FACQQ2=COMFAC*AEM**2/XW**2*(TNNA+TZN)*FCOL/3D0
+ FACQQ1=COMFAC*AEM**2/XW**2*(TNNB+TZN)*FCOL/3D0
+C%%%%%%%%%%%
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=(FACQQ0+FACQQ1)*WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),3)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=(FACQQ0+FACQQ2)*WIDS(PYCOMP(KFPR(ISUBSV,1)),3)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ 160 CONTINUE
+
+ ELSEIF(ISUB.EQ.210) THEN
+C...q + qbar' -> W*- > ~l_L + ~nu_L
+ FAC0=RKF*COMFAC*AEM**2/XW**2/12D0
+ FAC1=(TH*UH-SQM3*SQM4)/((SH-SQMW)**2+WWID**2*SQMW)
+ DO 180 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.10.OR.KFAC(1,I).EQ.0) GOTO 180
+ DO 170 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.10.OR.KFAC(2,J).EQ.0) GOTO 170
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 170
+ FCKM=3D0
+ IF(IA.LE.10) FCKM=VCKM((IA+1)/2,(JA+1)/2)
+ KCHSUM=KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J)
+ KCHW=2
+ IF(KCHSUM.LT.0) KCHW=3
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(ISUBSV.EQ.297.OR.ISUBSV.EQ.298) THEN
+ FACR=WIDS(PYCOMP(KFPR(ISUBSV,1)),5-KCHW)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ ELSE
+ FACR=WIDS(PYCOMP(KFPR(ISUBSV,1)),5-KCHW)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),KCHW)
+ ENDIF
+ SIGH(NCHN)=FAC0*FAC1*FCKM*FACR
+ 170 CONTINUE
+ 180 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.220) THEN
+ IF(ISUB.EQ.213) THEN
+C...f + fbar -> ~nu_L + ~nu_Lbar
+ IF(ISUBSV.EQ.299.OR.ISUBSV.EQ.300) THEN
+ FACR=WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ ELSE
+ FACR=WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ ENDIF
+ COMFAC=COMFAC*FACR
+ PROPZ2=(SH-SQMZ)**2+ZWID**2*SQMZ
+ XLL=0.5D0
+ XLR=0.0D0
+ DO 190 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 190
+ EI=KCHG(IA,1)/3D0
+ FCOL=1D0
+C...Color factor for e+ e-
+ IF(IA.GE.11) FCOL=3D0
+ XLQ=(SIGN(1D0,EI)-2D0*EI*XW)/2D0
+ XRQ=-EI*XW
+ TZC=0.0D0
+ TCC=0.0D0
+ IF(IA.GE.11.AND.KFID.EQ.IA+1) THEN
+ TZC=VMIX(1,1)**2/(TH-SMW(1)**2)+VMIX(2,1)**2/
+ & (TH-SMW(2)**2)
+ TCC=TZC**2
+ TZC=TZC/XW1*(SH-SQMZ)/PROPZ2*XLQ*XLL
+ ENDIF
+ FACQQ1=(XLQ**2+XRQ**2)*(XLL+XLR)**2/XW1**2/PROPZ2
+ FACQQ2=TZC+TCC/4D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=(FACQQ1+FACQQ2)*RKF*(UH*TH-SQM3*SQM4)*COMFAC
+ & *AEM**2*FCOL/3D0/XW**2
+ 190 CONTINUE
+
+ ELSEIF(ISUB.EQ.216) THEN
+C...q + qbar -> ~chi0_1 + ~chi0_1
+ IF(IZID1.EQ.IZID2) THEN
+ COMFAC=COMFAC*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ ELSE
+ COMFAC=COMFAC*WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ ENDIF
+ FACXX=COMFAC*AEM**2/3D0/XW**2
+ IF(IZID1.EQ.IZID2) FACXX=FACXX/2D0
+ ZM12=SQM3
+ ZM22=SQM4
+ WU2 = (UH-ZM12)*(UH-ZM22)
+ WT2 = (TH-ZM12)*(TH-ZM22)
+ WS2 = SMZ(IZID1)*SMZ(IZID2)*SH
+ PROPZ2 = (SH-SQMZ)**2 + SQMZ*ZWID**2
+ PROPZ=DCMPLX(SH-SQMZ,-ZWID*PMAS(23,1))/DCMPLX(PROPZ2)
+ DO 200 I=1,4
+ ZMIXC(IZID1,I)=DCMPLX(ZMIX(IZID1,I),ZMIXI(IZID1,I))
+ IF(IZID2.NE.IZID1) THEN
+ ZMIXC(IZID2,I)=DCMPLX(ZMIX(IZID2,I),ZMIXI(IZID2,I))
+ ENDIF
+ 200 CONTINUE
+ OLPP=(ZMIXC(IZID1,3)*DCONJG(ZMIXC(IZID2,3))-
+ & ZMIXC(IZID1,4)*DCONJG(ZMIXC(IZID2,4)))/2D0
+ ORPP=DCONJG(OLPP)
+ DO 210 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 210
+ EI=KCHG(IABS(I),1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ XML2=PMAS(PYCOMP(KSUSY1+IABS(I)),1)**2
+ XMR2=PMAS(PYCOMP(KSUSY2+IABS(I)),1)**2
+ GLIJ=(T3I*ZMIXC(IZID1,2)-TANW*(T3I-EI)*ZMIXC(IZID1,1))*
+ & DCONJG(T3I*ZMIXC(IZID2,2)-TANW*(T3I-EI)*ZMIXC(IZID2,1))
+ GRIJ=ZMIXC(IZID1,1)*DCONJG(ZMIXC(IZID2,1))*(EI*TANW)**2
+ QLL=DCMPLX((T3I-EI*XW)/XW1)*OLPP*PROPZ-GLIJ/DCMPLX(UH-XML2)
+ QLR=-DCMPLX((T3I-EI*XW)/XW1)*ORPP*PROPZ+DCONJG(GLIJ)
+ & /DCMPLX(TH-XML2)
+ QRL=-DCMPLX((EI*XW)/XW1)*OLPP*PROPZ+GRIJ/DCMPLX(TH-XMR2)
+ QRR=DCMPLX((EI*XW)/XW1)*ORPP*PROPZ
+ & -DCONJG(GRIJ)/DCMPLX(UH-XMR2)
+ FCOL=1D0
+ IF(IABS(I).GE.11) FCOL=3D0
+ FACGG1=(ABS(QLL)**2*POLL+ABS(QRR)**2*POLR)*WU2+
+ & (ABS(QRL)**2*POLR+ABS(QLR)**2*POLL)*WT2+
+ & 2D0*DBLE(QLR*DCONJG(QLL)*POLL+
+ & QRL*DCONJG(QRR)*POLR)*WS2
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACXX*FACGG1*FCOL
+ 210 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.230) THEN
+ IF(ISUB.EQ.226) THEN
+C...f + fbar -> ~chi+_1 + ~chi-_1
+ FACXX=COMFAC*AEM**2/3D0
+ ZM12=SQM3
+ ZM22=SQM4
+ WU2 = (UH-ZM12)*(UH-ZM22)
+ WT2 = (TH-ZM12)*(TH-ZM22)
+ WS2 = SMW(IZID1)*SMW(IZID2)*SH
+ PROPZ2 = (SH-SQMZ)**2 + SQMZ*ZWID**2
+ PROPZ=DCMPLX(SH-SQMZ,-ZWID*PMAS(23,1))/DCMPLX(PROPZ2)
+ DIFF=0D0
+ IF(IZID1.EQ.IZID2) DIFF=1D0
+ DO 220 I=1,2
+ VMIXC(IZID1,I)=DCMPLX(VMIX(IZID1,I),VMIXI(IZID1,I))
+ UMIXC(IZID1,I)=DCMPLX(UMIX(IZID1,I),UMIXI(IZID1,I))
+ IF(IZID2.NE.IZID1) THEN
+ VMIXC(IZID2,I)=DCMPLX(VMIX(IZID2,I),VMIXI(IZID2,I))
+ UMIXC(IZID2,I)=DCMPLX(UMIX(IZID2,I),UMIXI(IZID2,I))
+ ENDIF
+ 220 CONTINUE
+ OLP=-VMIXC(IZID2,1)*DCONJG(VMIXC(IZID1,1))-
+ & VMIXC(IZID2,2)*DCONJG(VMIXC(IZID1,2))/2D0+DCMPLX(XW*DIFF)
+ ORP=-UMIXC(IZID1,1)*DCONJG(UMIXC(IZID2,1))-
+ & UMIXC(IZID1,2)*DCONJG(UMIXC(IZID2,2))/2D0+DCMPLX(XW*DIFF)
+ DO 230 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 230
+ EI=KCHG(IABS(I),1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ QRL=DCMPLX(-EI/SH*DIFF)-DCMPLX(EI/XW1)*PROPZ*ORP
+ QLL=DCMPLX(-EI/SH*DIFF)+DCMPLX((T3I-XW*EI)/XW/XW1)*PROPZ*ORP
+ QRR=DCMPLX(-EI/SH*DIFF)-DCMPLX(EI/XW1)*PROPZ*OLP
+ IF(MOD(I,2).EQ.0) THEN
+ XML2=PMAS(PYCOMP(KSUSY1+IABS(I)-1),1)**2
+ QLR=DCMPLX(-EI/SH*DIFF)+DCMPLX((T3I-XW*EI)/XW/XW1)*
+ & PROPZ*OLP-UMIXC(IZID2,1)*DCONJG(UMIXC(IZID1,1))*
+ & DCMPLX(T3I/XW/(TH-XML2))
+ ELSE
+ XML2=PMAS(PYCOMP(KSUSY1+IABS(I)+1),1)**2
+ QLR=DCMPLX(-EI/SH*DIFF)+DCMPLX((T3I-XW*EI)/XW/XW1)*
+ & PROPZ*OLP-VMIXC(IZID2,1)*DCONJG(VMIXC(IZID1,1))*
+ & DCMPLX(T3I/XW/(TH-XML2))
+ ENDIF
+ FCOL=1D0
+ IF(IABS(I).GE.11) FCOL=3D0
+ FACSUM=((ABS(QLL)**2*POLL+ABS(QRR)**2*POLR)*WU2+
+ & (ABS(QRL)**2*POLR+ABS(QLR)**2*POLL)*WT2+
+ & 2D0*DBLE(QLR*DCONJG(QLL)*POLL+
+ & QRL*DCONJG(QRR)*POLR)*WS2)*FACXX*FCOL
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ IF(IZID1.EQ.IZID2) THEN
+ SIGH(NCHN)=FACSUM*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ ELSE
+ SIGH(NCHN)=FACSUM*WIDS(PYCOMP(KFPR(ISUBSV,1)),3)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACSUM*WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),3)
+ ENDIF
+ 230 CONTINUE
+
+ ELSEIF(ISUB.EQ.229) THEN
+C...q + qbar' -> ~chi0_1 + ~chi+-_1
+ FACXX=COMFAC*AEM**2/6D0/XW**2
+ ZM12=SQM3
+ ZM22=SQM4
+ WU2 = (UH-ZM12)*(UH-ZM22)
+ WT2 = (TH-ZM12)*(TH-ZM22)
+ WS2 = SMW(IZID1)*SMZ(IZID2)*SH
+ RT2I = 1D0/SQRT(2D0)
+ PROPW = DCMPLX(SH-SQMW,-WWID*PMAS(24,1))/
+ & DCMPLX((SH-SQMW)**2+WWID**2*SQMW,0D0)
+ DO 240 I=1,2
+ VMIXC(IZID1,I)=DCMPLX(VMIX(IZID1,I),VMIXI(IZID1,I))
+ UMIXC(IZID1,I)=DCMPLX(UMIX(IZID1,I),UMIXI(IZID1,I))
+ 240 CONTINUE
+ DO 250 I=1,4
+ ZMIXC(IZID2,I)=DCMPLX(ZMIX(IZID2,I),ZMIXI(IZID2,I))
+ 250 CONTINUE
+ OL=(DCONJG(ZMIXC(IZID2,2))*VMIXC(IZID1,1)-
+ & DCONJG(ZMIXC(IZID2,4))*VMIXC(IZID1,2)*RT2I)*PROPW
+ OR=(ZMIXC(IZID2,2)*DCONJG(UMIXC(IZID1,1))+
+ & ZMIXC(IZID2,3)*DCONJG(UMIXC(IZID1,2))*RT2I)*PROPW
+
+ DO 270 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.20.OR.KFAC(1,I).EQ.0) GOTO 270
+ EI=KCHG(IA,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ DO 260 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.20.OR.KFAC(2,J).EQ.0) GOTO 260
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 260
+ EJ=KCHG(JA,1)/3D0
+ T3J=SIGN(1D0,EJ+1D-6)/2D0
+ FCKM=3D0
+ IF(IA.LE.10) FCKM=VCKM((IA+1)/2,(JA+1)/2)
+ KCHSUM=KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J)
+ KCHW=2
+ IF(KCHSUM.LT.0) KCHW=3
+ IF(MOD(IA,2).EQ.0) THEN
+ ZMI2 = PMAS(PYCOMP(KSUSY1+IA),1)**2
+ ZMJ2 = PMAS(PYCOMP(KSUSY1+JA),1)**2
+ QLL=OL+VMIXC(IZID1,1)*DCONJG(ZMIXC(IZID2,1)*(EI-T3I)*
+ & TANW+ZMIXC(IZID2,2)*T3I)/DCMPLX(UH-ZMI2)
+ QLR=OR-DCONJG(UMIXC(IZID1,1))*(
+ & ZMIXC(IZID2,1)*(EJ-T3J)*TANW+ZMIXC(IZID2,2)*T3J)
+ & /DCMPLX(TH-ZMJ2)
+ ELSE
+ ZMI2 = PMAS(PYCOMP(KSUSY1+JA),1)**2
+ ZMJ2 = PMAS(PYCOMP(KSUSY1+IA),1)**2
+ QLL=OL+VMIXC(IZID1,1)*DCONJG(ZMIXC(IZID2,1)*(EJ-T3J)*
+ & TANW+ZMIXC(IZID2,2)*T3J)/DCMPLX(UH-ZMJ2)
+ QLR=OR-DCONJG(UMIXC(IZID1,1))*(
+ & ZMIXC(IZID2,1)*(EI-T3I)*TANW+ZMIXC(IZID2,2)*T3I)
+ & /DCMPLX(TH-ZMI2)
+ ENDIF
+ ZINTR=DBLE(QLR*DCONJG(QLL))
+ FACGG1=FACXX*(ABS(QLL)**2*WU2+ABS(QLR)**2*WT2+
+ & 2D0*ZINTR*WS2)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACGG1*FCKM*WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),KCHW)
+ 260 CONTINUE
+ 270 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.240) THEN
+ IF(ISUB.EQ.237) THEN
+C...q + qbar -> gluino + ~chi0_1
+ COMFAC=COMFAC*WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ ASYUK=RMSS(42)*AS
+ FAC0=COMFAC*ASYUK*AEM*4D0/9D0/XW
+ GM2=SQM3
+ ZM2=SQM4
+ DO 280 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 280
+ EI=KCHG(IABS(I),1)/3D0
+ IA=IABS(I)
+ XLQC = -TANW*EI*ZMIX(IZID,1)
+ XRQC =(SIGN(1D0,EI)*ZMIX(IZID,2)-TANW*
+ & (SIGN(1D0,EI)-2D0*EI)*ZMIX(IZID,1))/2D0
+ XLQ2=XLQC**2
+ XRQ2=XRQC**2
+ XML2=PMAS(PYCOMP(KSUSY1+IA),1)**2
+ XMR2=PMAS(PYCOMP(KSUSY2+IA),1)**2
+ ATKIN=(TH-GM2)*(TH-ZM2)/(TH-XML2)**2
+ AUKIN=(UH-GM2)*(UH-ZM2)/(UH-XML2)**2
+ ATUKIN=SMZ(IZID)*SQRT(GM2)*SH/(TH-XML2)/(UH-XML2)
+ SGCHIL=XLQ2*(ATKIN+AUKIN-2D0*ATUKIN)
+ ATKIN=(TH-GM2)*(TH-ZM2)/(TH-XMR2)**2
+ AUKIN=(UH-GM2)*(UH-ZM2)/(UH-XMR2)**2
+ ATUKIN=SMZ(IZID)*SQRT(GM2)*SH/(TH-XMR2)/(UH-XMR2)
+ SGCHIR=XRQ2*(ATKIN+AUKIN-2D0*ATUKIN)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FAC0*(SGCHIL+SGCHIR)
+ 280 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.250) THEN
+ IF(ISUB.EQ.241) THEN
+C...q + qbar' -> ~chi+-_1 + gluino
+ FACWG=COMFAC*AS*AEM/XW*2D0/9D0
+ GM2=SQM3
+ ZM2=SQM4
+ FAC01=2D0*UMIX(IZID,1)*VMIX(IZID,1)
+ FAC0=UMIX(IZID,1)**2
+ FAC1=VMIX(IZID,1)**2
+ DO 300 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.10.OR.KFAC(1,I).EQ.0) GOTO 300
+ DO 290 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.10.OR.KFAC(2,J).EQ.0) GOTO 290
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 290
+ FCKM=1D0
+ IF(IA.LE.10) FCKM=VCKM((IA+1)/2,(JA+1)/2)
+ KCHSUM=KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J)
+ KCHW=2
+ IF(KCHSUM.LT.0) KCHW=3
+ XMU2=PMAS(PYCOMP(KSUSY1+2),1)**2
+ XMD2=PMAS(PYCOMP(KSUSY1+1),1)**2
+ ATKIN=(TH-GM2)*(TH-ZM2)/(TH-XMU2)**2
+ AUKIN=(UH-GM2)*(UH-ZM2)/(UH-XMD2)**2
+ ATUKIN=SMW(IZID)*SQRT(GM2)*SH/(TH-XMU2)/(UH-XMD2)
+ XMU2=PMAS(PYCOMP(KSUSY2+2),1)**2
+ XMD2=PMAS(PYCOMP(KSUSY2+1),1)**2
+ ATKIN=(ATKIN+(TH-GM2)*(TH-ZM2)/(TH-XMU2)**2)/2D0
+ AUKIN=(AUKIN+(UH-GM2)*(UH-ZM2)/(UH-XMD2)**2)/2D0
+ ATUKIN=(ATUKIN+SMW(IZID)*SQRT(GM2)*
+ & SH/(TH-XMU2)/(UH-XMD2))/2D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACWG*FCKM*(FAC0*ATKIN+FAC1*AUKIN-
+ & FAC01*ATUKIN)*WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),KCHW)
+ 290 CONTINUE
+ 300 CONTINUE
+
+ ELSEIF(ISUB.EQ.243) THEN
+C...q + qbar -> gluino + gluino
+ COMFAC=COMFAC*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ XMT=SQM3-TH
+ XMU=SQM3-UH
+ DO 310 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 310
+ NCHN=NCHN+1
+ XSU=PMAS(PYCOMP(KSUSY1+IABS(I)),1)**2-UH
+ XST=PMAS(PYCOMP(KSUSY1+IABS(I)),1)**2-TH
+ FACGG1=COMFAC*AS**2*8D0/3D0*( (XMT**2+XMU**2+
+ & 2D0*SQM3*SH)/SH2 + RMSS(42)**2*(4D0/9D0*(XMT**2/XST**2+
+ & XMU**2/XSU**2) + SQM3*SH/XST/XSU/9D0) - RMSS(42)*(
+ & (XMT**2+SH*SQM3)/SH/XST + (XMU**2+SH*SQM3)/SH/XSU ))
+ XSU=PMAS(PYCOMP(KSUSY2+IABS(I)),1)**2-UH
+ XST=PMAS(PYCOMP(KSUSY2+IABS(I)),1)**2-TH
+ FACGG2=COMFAC*AS**2*8D0/3D0*( (XMT**2+XMU**2+
+ & 2D0*SQM3*SH)/SH2 + RMSS(42)**2*(4D0/9D0*(XMT**2/XST**2+
+ & XMU**2/XSU**2) + SQM3*SH/XST/XSU/9D0) - RMSS(42)*(
+ & (XMT**2+SH*SQM3)/SH/XST + (XMU**2+SH*SQM3)/SH/XSU ))
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+C...1/2 for identical particles
+ SIGH(NCHN)=0.25D0*(FACGG1+FACGG2)
+ 310 CONTINUE
+
+ ELSEIF(ISUB.EQ.244) THEN
+C...g + g -> gluino + gluino
+ COMFAC=COMFAC*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ XMT=SQM3-TH
+ XMU=SQM3-UH
+ FACQQ1=COMFAC*AS**2*9D0/4D0*(
+ & (XMT*XMU-2D0*SQM3*(TH+SQM3))/XMT**2 -
+ & (XMT*XMU+SQM3*(UH-TH))/SH/XMT )
+ FACQQ2=COMFAC*AS**2*9D0/4D0*(
+ & (XMU*XMT-2D0*SQM3*(UH+SQM3))/XMU**2 -
+ & (XMU*XMT+SQM3*(TH-UH))/SH/XMU )
+ FACQQ3=COMFAC*AS**2*9D0/4D0*(2D0*XMT*XMU/SH2 +
+ & SQM3*(SH-4D0*SQM3)/XMT/XMU)
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 320
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1/2D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ2/2D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=3
+ SIGH(NCHN)=FACQQ3/2D0
+ 320 CONTINUE
+
+ ELSEIF(ISUB.EQ.246) THEN
+C...g + q_j -> ~chi0_1 + ~q_j
+ FAC0=COMFAC*AS*AEM/6D0/XW
+ ZM2=SQM4
+ QM2=SQM3
+ FACZQ0=FAC0*( (ZM2-TH)/SH +
+ & (UH-ZM2)*(UH+QM2)/(UH-QM2)**2 -
+ & (SH*(UH+ZM2)+2D0*(QM2-ZM2)*(ZM2-UH))/SH/(UH-QM2) )
+ KFNSQ=MOD(KFPR(ISUBSV,1),KSUSY1)
+ DO 340 I=-KFNSQ,KFNSQ,2*KFNSQ
+ IF(I.LT.MMINA.OR.I.GT.MMAXA) GOTO 340
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 340
+ EI=KCHG(IABS(I),1)/3D0
+ IA=IABS(I)
+ XRQZ = -TANW*EI*ZMIX(IZID,1)
+ XLQZ =(SIGN(1D0,EI)*ZMIX(IZID,2)-TANW*
+ & (SIGN(1D0,EI)-2D0*EI)*ZMIX(IZID,1))/2D0
+ IF(ILR.EQ.0) THEN
+ BS=XLQZ**2*SFMIX(IA,1)**2+XRQZ**2*SFMIX(IA,2)**2
+ ELSE
+ BS=XLQZ**2*SFMIX(IA,3)**2+XRQZ**2*SFMIX(IA,4)**2
+ ENDIF
+ FACZQ=FACZQ0*BS
+ KCHQ=2
+ IF(I.LT.0) KCHQ=3
+ DO 330 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 330
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 330
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZQ*RKF*WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ 330 CONTINUE
+ 340 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.260) THEN
+ IF(ISUB.EQ.254) THEN
+C...g + q_j -> ~chi1_1 + ~q_i
+ FAC0=COMFAC*AS*AEM/12D0/XW
+ ZM2=SQM4
+ QM2=SQM3
+ AU=UMIX(IZID,1)**2
+ AD=VMIX(IZID,1)**2
+ FACZQ0=FAC0*( (ZM2-TH)/SH +
+ & (UH-ZM2)*(UH+QM2)/(UH-QM2)**2 -
+ & (SH*(UH+ZM2)+2D0*(QM2-ZM2)*(ZM2-UH))/SH/(UH-QM2) )
+ KFNSQ1=MOD(KFPR(ISUBSV,1),KSUSY1)
+ IF(MOD(KFNSQ1,2).EQ.0) THEN
+ KFNSQ=KFNSQ1-1
+ KCHW=2
+ ELSE
+ KFNSQ=KFNSQ1+1
+ KCHW=3
+ ENDIF
+ DO 360 I=-KFNSQ,KFNSQ,2*KFNSQ
+ IF(I.LT.MMINA.OR.I.GT.MMAXA) GOTO 360
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 360
+ IA=IABS(I)
+ IF(MOD(IA,2).EQ.0) THEN
+ FACZQ=FACZQ0*AU
+ ELSE
+ FACZQ=FACZQ0*AD
+ ENDIF
+ FACZQ=FACZQ*SFMIX(KFNSQ1,1+2*ILR)**2
+ KCHQ=2
+ IF(I.LT.0) KCHQ=3
+ KCHWQ=KCHW
+ IF(I.LT.0) KCHWQ=5-KCHW
+ DO 350 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 350
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 350
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZQ*RKF*WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),KCHWQ)
+ 350 CONTINUE
+ 360 CONTINUE
+
+ ELSEIF(ISUB.EQ.258) THEN
+C...g + q_j -> gluino + ~q_i
+ XG2=SQM4
+ XQ2=SQM3
+ XMT=XG2-TH
+ XMU=XG2-UH
+ XST=XQ2-TH
+ XSU=XQ2-UH
+ FACQG1=0.5D0*4D0/9D0*XMT/SH + (XMT*SH+2D0*XG2*XST)/XMT**2 -
+ & ( (SH-XQ2+XG2)*(-XST)-SH*XG2 )/SH/(-XMT) +
+ & 0.5D0*1D0/2D0*( XST*(TH+2D0*UH+XG2)-XMT*(SH-2D0*XST) +
+ & (-XMU)*(TH+XG2+2D0*XQ2) )/2D0/XMT/XSU
+ FACQG2= 4D0/9D0*(-XMU)*(UH+XQ2)/XSU**2 + 1D0/18D0*
+ & (SH*(UH+XG2)
+ & +2D0*(XQ2-XG2)*XMU)/SH/(-XSU) + 0.5D0*4D0/9D0*XMT/SH +
+ & 0.5D0*1D0/2D0*(XST*(TH+2D0*UH+XG2)-XMT*(SH-2D0*XST)+
+ & (-XMU)*(TH+XG2+2D0*XQ2))/2D0/XMT/XSU
+ ASYUK=RMSS(42)*AS
+ FACQG1=COMFAC*AS*ASYUK*FACQG1/2D0
+ FACQG2=COMFAC*AS*ASYUK*FACQG2/2D0
+ KFNSQ=MOD(KFPR(ISUBSV,1),KSUSY1)
+ DO 380 I=-KFNSQ,KFNSQ,2*KFNSQ
+ IF(I.LT.MMINA.OR.I.GT.MMAXA) GOTO 380
+ IF(I.EQ.0.OR.IABS(I).GT.10) GOTO 380
+ KCHQ=2
+ IF(I.LT.0) KCHQ=3
+ FACSEL=RKF*WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ DO 370 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 370
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 370
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQG1*FACSEL
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQG2*FACSEL
+ 370 CONTINUE
+ 380 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.270) THEN
+ IF(ISUB.EQ.261) THEN
+C...q_i + q_ibar -> ~t_1 + ~t_1bar
+ FACQQ1=COMFAC*( (UH*TH-SQM3*SQM4)/ SH**2 )*
+ & WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ KFNSQ=MOD(KFPR(ISUBSV,1),KSUSY1)
+ FAC0=AS**2*4D0/9D0
+ DO 390 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 390
+ IF(IA.GE.11.AND.IA.LE.18) THEN
+ EI=KCHG(IA,1)/3D0
+ EJ=KCHG(KFNSQ,1)/3D0
+ T3I=SIGN(1D0,EI)/2D0
+ T3J=SIGN(1D0,EJ)/2D0
+ XLQ=2D0*(T3J-EJ*XW)*SFMIX(KFNSQ,2*ILR+1)**2
+ XRQ=2D0*(-EJ*XW)*SFMIX(KFNSQ,2*ILR+2)**2
+ XLF=2D0*(T3I-EI*XW)
+ XRF=2D0*(-EI*XW)
+ TAA=0.5D0*(EI*EJ)**2
+ TZZ=(XLF**2+XRF**2)*(XLQ+XRQ)**2/64D0/XW**2/XW1**2
+ TZZ=TZZ/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)
+ TAZ=EI*EJ*(XLQ+XRQ)*(XLF+XRF)/8D0/XW/XW1
+ TAZ=TAZ/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)*(1D0-SQMZ/SH)
+ FAC0=AEM**2*12D0*(TAA+TZZ+TAZ)
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1*FAC0
+ 390 CONTINUE
+
+ ELSEIF(ISUB.EQ.263) THEN
+C...f + fbar -> ~t1 + ~t2bar
+ DO 400 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 400
+ EI=KCHG(IABS(I),1)/3D0
+ TT3I=SIGN(1D0,EI)/2D0
+ EJ=2D0/3D0
+ TT3J=1D0/2D0
+ FCOL=1D0
+C...Color factor for e+ e-
+ IF(IA.GE.11) FCOL=3D0
+ XLQ=2D0*(TT3J-EJ*XW)
+ XRQ=2D0*(-EJ*XW)
+ XLF=2D0*(TT3I-EI*XW)
+ XRF=2D0*(-EI*XW)
+ TZZ=(XLF**2+XRF**2)*(XLQ-XRQ)**2/64D0/XW**2/XW1**2
+ TZZ=TZZ*(SFMIX(6,1)*SFMIX(6,2))**2
+ TZZ=TZZ/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)
+C...Factor of 2 for t1 t2bar + t2 t1bar
+ FACQQ1=2D0*COMFAC*AEM**2*TZZ*FCOL*4D0
+ FACQQ1=FACQQ1*( UH*TH-SQM3*SQM4 )/SH2
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1*WIDS(PYCOMP(KFPR(ISUBSV,1)),2)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),3)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ1*WIDS(PYCOMP(KFPR(ISUBSV,1)),3)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),2)
+ 400 CONTINUE
+
+ ELSEIF(ISUB.EQ.264) THEN
+C...g + g -> ~t_1 + ~t_1bar
+ XSU=SQM3-UH
+ XST=SQM3-TH
+ FAC0=COMFAC*AS**2*(7D0/48D0+3D0*(UH-TH)**2/16D0/SH2 )*0.5D0*
+ & WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ FACQQ1=FAC0*(0.5D0+2D0*SQM3*TH/XST**2 + 2D0*SQM3**2/XSU/XST)
+ FACQQ2=FAC0*(0.5D0+2D0*SQM3*UH/XSU**2 + 2D0*SQM3**2/XSU/XST)
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 410
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ2
+ 410 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.280) THEN
+ IF(ISUB.EQ.271) THEN
+C...q + q' -> ~q + ~q' (~g exchange)
+ XMG2=PMAS(PYCOMP(KSUSY1+21),1)**2
+ XMT=XMG2-TH
+ XMU=XMG2-UH
+ XSU1=SQM3-UH
+ XSU2=SQM4-UH
+ XST1=SQM3-TH
+ XST2=SQM4-TH
+ ASYUK=RMSS(42)*AS
+ IF(ILR.EQ.1) THEN
+ FACQQ1=COMFAC*ASYUK**2*4D0/9D0*( -(XST1*XST2+SH*TH)/XMT**2 )
+ FACQQ2=COMFAC*ASYUK**2*4D0/9D0*( -(XSU1*XSU2+SH*UH)/XMU**2 )
+ FACQQB=0.0D0
+ ELSE
+ FACQQ1=0.5D0*COMFAC*ASYUK**2*4D0/9D0*( SH*XMG2/XMT**2 )
+ FACQQ2=0.5D0*COMFAC*ASYUK**2*4D0/9D0*( SH*XMG2/XMU**2 )
+ FACQQB=0.5D0*COMFAC*ASYUK**2*4D0/9D0*( -2D0*SH*XMG2/3D0/
+ & XMT/XMU )
+ ENDIF
+ KFNSQI=MOD(KFPR(ISUBSV,1),KSUSY1)
+ KFNSQJ=MOD(KFPR(ISUBSV,2),KSUSY1)
+ DO 430 I=-KFNSQI,KFNSQI,2*KFNSQI
+ IF(I.LT.MMIN1.OR.I.GT.MMAX1) GOTO 430
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.MSTP(58).OR.KFAC(1,I).EQ.0) GOTO 430
+ KCHQ=2
+ IF(I.LT.0) KCHQ=3
+ DO 420 J=-KFNSQJ,KFNSQJ,2*KFNSQJ
+ IF(J.LT.MMIN2.OR.J.GT.MMAX2) GOTO 420
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.MSTP(58).OR.KFAC(2,J).EQ.0) GOTO 420
+ IF(I*J.LT.0) GOTO 420
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1*RKF*WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),KCHQ)
+ IF(I.EQ.J) THEN
+ IF(ILR.EQ.0) THEN
+ SIGH(NCHN)=0.5D0*(FACQQ1+0.5D0*FACQQB)*RKF*
+ & WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ+2)
+ ELSE
+ SIGH(NCHN)=0.5D0*FACQQ1*RKF*
+ & WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),KCHQ)
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ IF(ILR.EQ.0) THEN
+ SIGH(NCHN)=0.5D0*(FACQQ2+0.5D0*FACQQB)*RKF*
+ & WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ+2)
+ ELSE
+ SIGH(NCHN)=0.5D0*FACQQ2*RKF*
+ & WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),KCHQ)
+ ENDIF
+ ENDIF
+ 420 CONTINUE
+ 430 CONTINUE
+
+ ELSEIF(ISUB.EQ.274) THEN
+C...q + qbar' -> ~q + ~qbar'
+ XMG2=PMAS(PYCOMP(KSUSY1+21),1)**2
+ XMT=XMG2-TH
+ XMU=XMG2-UH
+ IF(ILR.EQ.0) THEN
+C...Mrenna...Normalization.and.1/XMT
+ FACQQ1=COMFAC*AS**2*2D0/9D0*(
+ & (UH*TH-SQM3*SQM4)/XMT**2 )*RMSS(42)**2
+ FACQQB=COMFAC*AS**2*4D0/9D0*(
+ & (UH*TH-SQM3*SQM4)/SH2 )
+ FACQQI=-COMFAC*AS**2*4D0/27D0*(
+ & (UH*TH-SQM3*SQM4)/SH/XMT )*RMSS(42)
+ FACQQB=FACQQB+FACQQ1+FACQQI
+ ELSE
+ FACQQ1=COMFAC*AS**2*4D0/9D0*( XMG2*SH/XMT**2 )*RMSS(42)**2
+ FACQQB=FACQQ1
+ ENDIF
+ KFNSQI=MOD(KFPR(ISUBSV,1),KSUSY1)
+ KFNSQJ=MOD(KFPR(ISUBSV,2),KSUSY1)
+ DO 450 I=-KFNSQI,KFNSQI,2*KFNSQI
+ IF(I.LT.MMIN1.OR.I.GT.MMAX1) GOTO 450
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.MSTP(58).OR.KFAC(1,I).EQ.0) GOTO 450
+ KCHQ=2
+ IF(I.LT.0) KCHQ=3
+ DO 440 J=-KFNSQJ,KFNSQJ,2*KFNSQJ
+ IF(J.LT.MMIN2.OR.J.GT.MMAX2) GOTO 440
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.MSTP(58).OR.KFAC(2,J).EQ.0) GOTO 440
+ IF(I*J.GT.0) GOTO 440
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1*RKF*WIDS(PYCOMP(KFPR(ISUBSV,1)),KCHQ)*
+ & WIDS(PYCOMP(KFPR(ISUBSV,2)),5-KCHQ)
+ IF(ILR.EQ.0.AND.I.EQ.-J) SIGH(NCHN)=FACQQB*RKF*
+ & WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ 440 CONTINUE
+ 450 CONTINUE
+
+ ELSEIF(ISUB.EQ.277) THEN
+C...q_i + q_ibar -> ~q_j + ~q_jbar ,i .ne. j
+C...if i .eq. j covered in 274
+ FACQQ1=COMFAC*( (UH*TH-SQM3*SQM4)/ SH**2 )
+ KFNSQ=MOD(KFPR(ISUBSV,1),KSUSY1)
+ FAC0=0D0
+ DO 460 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.(IA.GT.MSTP(58).AND.IA.LE.10).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 460
+ IF(IA.EQ.KFNSQ) GOTO 460
+ IF(IA.EQ.11.OR.IA.EQ.13.OR.IA.EQ.15) THEN
+ EI=KCHG(IA,1)/3D0
+ EJ=KCHG(KFNSQ,1)/3D0
+ T3J=SIGN(0.5D0,EJ)
+ T3I=SIGN(1D0,EI)/2D0
+ IF(ILR.EQ.0) THEN
+ XLQ=2D0*(T3J-EJ*XW)*SFMIX(KFNSQ,1)
+ XRQ=2D0*(-EJ*XW)*SFMIX(KFNSQ,2)
+ ELSE
+ XLQ=2D0*(T3J-EJ*XW)*SFMIX(KFNSQ,3)
+ XRQ=2D0*(-EJ*XW)*SFMIX(KFNSQ,4)
+ ENDIF
+ XLF=2D0*(T3I-EI*XW)
+ XRF=2D0*(-EI*XW)
+ IF(ILR.EQ.0) THEN
+ XRQ=0D0
+ ELSE
+ XLQ=0D0
+ ENDIF
+ TAA=0.5D0*(EI*EJ)**2
+ TZZ=(XLF**2+XRF**2)*(XLQ+XRQ)**2/64D0/XW**2/XW1**2
+ TZZ=TZZ/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)
+ TAZ=EI*EJ*(XLQ+XRQ)*(XLF+XRF)/8D0/XW/XW1
+ TAZ=TAZ/((1D0-SQMZ/SH)**2+SQMZ*(ZWID/SH)**2)*(1D0-SQMZ/SH)
+ FAC0=AEM**2*12D0*(TAA+TZZ+TAZ)
+ ELSEIF(IA.LE.6) THEN
+ FAC0=AS**2*8D0/9D0/2D0
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1*FAC0*RKF*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ 460 CONTINUE
+
+ ELSEIF(ISUB.EQ.279) THEN
+C...g + g -> ~q_j + ~q_jbar
+ XSU=SQM3-UH
+ XST=SQM3-TH
+C...5=RKF because ~t ~tbar treated separately
+ FAC0=RKF*COMFAC*AS**2*( 7D0/48D0+3D0*(UH-TH)**2/16D0/SH2 )
+ FACQQ1=FAC0*(0.5D0+2D0*SQM3*TH/XST**2 + 2D0*SQM3**2/XSU/XST)
+ FACQQ2=FAC0*(0.5D0+2D0*SQM3*UH/XSU**2 + 2D0*SQM3**2/XSU/XST)
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 470
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1/2D0*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ2/2D0*WIDS(PYCOMP(KFPR(ISUBSV,1)),1)
+ 470 CONTINUE
+
+ ENDIF
+ ENDIF
+CMRENNA--
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSGTC
+C...Subprocess cross sections for Technicolor processes.
+C...Auxiliary to PYSIGH.
+
+ SUBROUTINE PYSGTC(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYPARS/,/PYINT1/,/PYINT2/,
+ &/PYINT3/,/PYINT4/,/PYTCSM/,/PYSGCM/
+C...Local arrays and complex variables
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5)
+ COMPLEX*16 SSMZ,SSMR,SSMO,DETD,F2L,F2R,DARHO,DZRHO,DAOME,DZOME
+ COMPLEX*16 SSMX,DAAST,DZAST,DWAST
+ COMPLEX*16 DAA,DZZ,DAZ,DWW,DWRHO
+ COMPLEX*16 ZTC(6,6),YTC(6,6),DGGS,DGGT,DGGU,DGVS,DGVT,DGVU
+ COMPLEX*16 DQQS,DQQT,DQQU,DQTS,DQGS,DTGS
+ COMPLEX*16 DVVS,DVVT,DVVU
+ INTEGER INDX(6)
+
+C...Combinations of weak mixing angle.
+ TANW=SQRT(XW/XW1)
+ CT2W=(1D0-2D0*XW)/(2D0*XW/TANW)
+
+C...Convert almost equivalent technicolor processes into
+C...a few basic processes, and set distinguishing parameters.
+ IF(ISUB.GE.361.AND.ISUB.LE.380) THEN
+ SQTV=RTCM(12)**2
+ SQTA=RTCM(13)**2
+ SN2W=2D0*SQRT(XW*XW1)
+ CS2W=1D0-2D0*XW
+ CT2W=CS2W/SN2W
+ CSXI=COS(ASIN(RTCM(3)))
+ CSXIP=COS(ASIN(RTCM(4)))
+ QUPD=2D0*RTCM(2)-1D0
+ Q2UD=RTCM(2)**2+(RTCM(2)-1D0)**2
+ CAB2=0D0
+ VOGP=0D0
+ VRGP=0D0
+ AOGP=0D0
+ ARGP=0D0
+ VXGP=0D0
+ AXGP=0D0
+ VAGP=0D0
+ VZGP=0D0
+ VWGP=0D0
+C... rho_tc0, etc. -> W_L W_L, W_L W_T
+ IF(ISUB.EQ.361) THEN
+ KFA=24
+ KFB=24
+ CAB2=RTCM(3)**4
+ AXGP=-RTCM(3)/(2D0*SQRT(XW))/RTCM(49)
+ ARGP=RTCM(3)/(2D0*SQRT(XW))/RTCM(13)
+ VOGP=RTCM(3)/(2D0*SQRT(XW))/RTCM(12)
+C...Multiply by sqrt(2) to account for W^+_T W^-_L + W^+_L W^-_T.
+ AXGP = SQRT(2D0)*AXGP
+ ARGP = SQRT(2D0)*ARGP
+ VOGP = SQRT(2D0)*VOGP
+C... rho_tc0 -> W_L pi_tc-
+ ELSEIF(ISUB.EQ.362) THEN
+ KFA=24
+ KFB=KTECHN+211
+ ISUB=361
+ CAB2=RTCM(3)**2*(1D0-RTCM(3)**2)
+C... pi_tc pi_tc
+ ELSEIF(ISUB.EQ.363) THEN
+ KFA=KTECHN+211
+ KFB=KTECHN+211
+ ISUB=361
+ CAB2=(1D0-RTCM(3)**2)**2
+C... rho_tc0/omega_tc -> gamma pi_tc
+ ELSEIF(ISUB.EQ.364) THEN
+ KFA=22
+ KFB=KTECHN+111
+ ISUB=361
+ VOGP=CSXI/RTCM(12)
+ VRGP=VOGP*QUPD
+ VAGP=2D0*QUPD*CSXI
+ VZGP=QUPD*CSXI*(1D0-4D0*XW)/SN2W
+C... gamma pi_tc'
+ ELSEIF(ISUB.EQ.365) THEN
+ KFA=22
+ KFB=KTECHN+221
+ ISUB=361
+ VRGP=CSXIP/RTCM(12)
+ VOGP=VRGP*QUPD
+ VAGP=2D0*Q2UD*CSXIP
+ VZGP=CSXIP/SN2W*(1D0-4D0*XW*Q2UD)
+C... Z pi_tc
+ ELSEIF(ISUB.EQ.366) THEN
+ KFA=23
+ KFB=KTECHN+111
+ ISUB=361
+ VOGP=CSXI*CT2W/RTCM(12)
+ VRGP=-QUPD*CSXI*TANW/RTCM(12)
+ VAGP=QUPD*CSXI*(1D0-4D0*XW)/SN2W
+ VZGP=-QUPD*CSXI*CS2W/XW1
+C... Z pi_tc'
+ ELSEIF(ISUB.EQ.367) THEN
+ KFA=23
+ KFB=KTECHN+221
+ ISUB=361
+C...RTCM(48) is the M_V for the techni-a
+ VXGP=-CSXIP/SN2W/RTCM(48)
+ VRGP=CSXIP*CT2W/RTCM(12)
+ VOGP=-QUPD*CSXIP*TANW/RTCM(12)
+ VAGP=CSXIP*(1D0-4D0*Q2UD*XW)/SN2W
+ VZGP=2D0*CSXIP*(CS2W+4D0*Q2UD*XW**2)/SN2W**2
+C... W_T pi_tc
+ ELSEIF(ISUB.EQ.368) THEN
+ KFA=24
+ KFB=KTECHN+211
+ ISUB=361
+C...RTCM(49) is the M_A for the techni-a
+ AXGP=-CSXI/(2D0*SQRT(XW))/RTCM(49)
+ VOGP=CSXI/(2D0*SQRT(XW))/RTCM(12)
+ ARGP=CSXI/(2D0*SQRT(XW))/RTCM(13)
+ VAGP=QUPD*CSXI/(2D0*SQRT(XW))
+ VZGP=-QUPD*CSXI/(2D0*SQRT(XW1))
+C... rho_tc+, a_T+ -> W_L Z_L, W_T Z_L
+ ELSEIF(ISUB.EQ.370) THEN
+ KFA=24
+ KFB=23
+ CAB2=RTCM(3)**4
+ ARGP=-RTCM(3)/(2D0*SQRT(XW))/RTCM(13)
+ AXGP=RTCM(3)/(2D0*SQRT(XW))/RTCM(49)
+C... W_L pi_tc0
+ ELSEIF(ISUB.EQ.371) THEN
+ KFA=24
+ KFB=KTECHN+111
+ ISUB=370
+ CAB2=RTCM(3)**2*(1D0-RTCM(3)**2)
+C... Z_L pi_tc+
+ ELSEIF(ISUB.EQ.372) THEN
+ KFA=KTECHN+211
+ KFB=23
+ ISUB=370
+ CAB2=RTCM(3)**2*(1D0-RTCM(3)**2)
+C... pi_tc+ pi_tc0
+ ELSEIF(ISUB.EQ.373) THEN
+ KFA=KTECHN+211
+ KFB=KTECHN+111
+ ISUB=370
+ CAB2=(1D0-RTCM(3)**2)**2
+C... gamma pi_tc+
+ ELSEIF(ISUB.EQ.374) THEN
+ KFA=KTECHN+211
+ KFB=22
+ ISUB=370
+ VRGP=QUPD*CSXI/RTCM(12)
+ VWGP=QUPD*CSXI/(2D0*SQRT(XW))
+ AXGP=-CSXI/RTCM(49)
+C... Z_T pi_tc+
+ ELSEIF(ISUB.EQ.375) THEN
+ KFA=KTECHN+211
+ KFB=23
+ ISUB=370
+ VRGP=-QUPD*CSXI*TANW/RTCM(12)
+ ARGP=CSXI/(2D0*SQRT(XW*XW1))/RTCM(13)
+ VWGP=-QUPD*CSXI/(2D0*SQRT(XW1))
+ AXGP=-CSXI*CT2W/RTCM(49)
+C... W_T pi_tc0
+ ELSEIF(ISUB.EQ.376) THEN
+ KFA=24
+ KFB=KTECHN+111
+ ISUB=370
+ VRGP=0D0
+ ARGP=-CSXI/(2D0*SQRT(XW))/RTCM(13)
+ AXGP=CSXI/(2D0*SQRT(XW))/RTCM(49)
+C... W_T pi_tc0'
+ ELSEIF(ISUB.EQ.377) THEN
+ KFA=24
+ KFB=KTECHN+221
+ ISUB=370
+ VRGP=CSXIP/(2D0*SQRT(XW))/RTCM(12)
+ VWGP=CSXIP/(2D0*XW)
+ VXGP=-CSXIP/(2D0*SQRT(XW))/RTCM(48)
+C... gamma W+
+ ELSEIF(ISUB.EQ.378) THEN
+ KFA=24
+ KFB=22
+ ISUB=370
+ VRGP=QUPD*RTCM(3)/RTCM(12)
+ AXGP=-RTCM(3)/RTCM(49)
+C... gamma Z
+ ELSEIF(ISUB.EQ.379) THEN
+ KFA=23
+ KFB=22
+ ISUB=361
+ VOGP=RTCM(3)/RTCM(12)
+ VRGP=QUPD*RTCM(3)/RTCM(12)
+ ELSEIF(ISUB.EQ.380) THEN
+ KFA=23
+ KFB=23
+ ISUB=361
+ VOGP=RTCM(3)*CT2W/RTCM(12)
+ VRGP=-QUPD*RTCM(3)*TANW/RTCM(12)
+ ENDIF
+ ENDIF
+
+C...QCD 2 -> 2 processes: corrections from virtual technicolor exchange.
+ IF(ISUB.GE.381.AND.ISUB.LE.388) THEN
+ IF(ITCM(5).LE.4) THEN
+ SQDQQS=1D0/SH2
+ SQDQQT=1D0/TH2
+ SQDQQU=1D0/UH2
+ SQDGGS=SQDQQS
+ SQDGGT=SQDQQT
+ SQDGGU=SQDQQU
+ REDGGS=1D0/SH
+ REDGGT=1D0/TH
+ REDGGU=1D0/UH
+ REDGTU=1D0/UH/TH
+ REDGSU=1D0/SH/UH
+ REDGST=1D0/SH/TH
+ REDQST=1D0/SH/TH
+ REDQTU=1D0/UH/TH
+ SQDLGS=0D0
+ SQDLGT=0D0
+ SQDQTS=SQDQQS
+ ELSEIF(ITCM(5).EQ.5) THEN
+ TANT3=RTCM(21)
+ IF(ITCM(2).EQ.0) THEN
+ IMDL=1
+ ELSE
+ IMDL=2
+ ENDIF
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ SIN2T=2D0*TANT3/(TANT3**2+1D0)
+ SINT3=TANT3/SQRT(TANT3**2+1D0)
+ XIG=SQRT(PYALPS(SH)/ALPRHT)
+ X12=(RTCM(29)*SQRT(1D0-RTCM(29)**2)*COS(RTCM(30))+
+ & RTCM(31)*SQRT(1D0-RTCM(31)**2)*COS(RTCM(32)))/SQRT(2D0)/SIN2T
+ X21=(RTCM(29)*SQRT(1D0-RTCM(29)**2)*SIN(RTCM(30))+
+ & RTCM(31)*SQRT(1D0-RTCM(31)**2)*SIN(RTCM(32)))/SQRT(2D0)/SIN2T
+ X11=(.25D0*(RTCM(29)**2+RTCM(31)**2+2D0)-
+ & SINT3**2)*2D0/SIN2T
+ X22=(.25D0*(2D0-RTCM(29)**2-RTCM(31)**2)-
+ & SINT3**2)*2D0/SIN2T
+
+ SM1122=.5D0*(2D0-RTCM(29)**2-RTCM(31)**2)*RTCM(28)**2
+ SM1112=X12*RTCM(28)**2*SIN2T
+ SM1121=-X21*RTCM(28)**2*SIN2T
+ SM2212=-SM1112
+ SM2221=-SM1121
+ SM1221=-.5D0*((1D0-RTCM(29)**2)*SIN(2D0*RTCM(30))+
+ & (1D0-RTCM(31)**2)*SIN(2D0*RTCM(32)))*RTCM(28)**2
+
+C.........SH LOOP
+ ZTC(1,1)=DCMPLX(SH,0D0)
+ CALL PYWIDT(3100021,SH,WDTP,WDTE)
+ IF(WDTP(0).GT.RTCM(33)*SHR) WDTP(0)=RTCM(33)*SHR
+ ZTC(2,2)=DCMPLX(SH-PMAS(PYCOMP(3100021),1)**2,-SHR*WDTP(0))
+ CALL PYWIDT(3100113,SH,WDTP,WDTE)
+ ZTC(3,3)=DCMPLX(SH-PMAS(PYCOMP(3100113),1)**2,-SHR*WDTP(0))
+ CALL PYWIDT(3400113,SH,WDTP,WDTE)
+ ZTC(4,4)=DCMPLX(SH-PMAS(PYCOMP(3400113),1)**2,-SHR*WDTP(0))
+ CALL PYWIDT(3200113,SH,WDTP,WDTE)
+ ZTC(5,5)=DCMPLX(SH-PMAS(PYCOMP(3200113),1)**2,-SHR*WDTP(0))
+ CALL PYWIDT(3300113,SH,WDTP,WDTE)
+ ZTC(6,6)=DCMPLX(SH-PMAS(PYCOMP(3300113),1)**2,-SHR*WDTP(0))
+ ZTC(1,2)=(0D0,0D0)
+ ZTC(1,3)=DCMPLX(SH*XIG,0D0)
+ ZTC(1,4)=ZTC(1,3)
+ ZTC(1,5)=ZTC(1,2)
+ ZTC(1,6)=ZTC(1,2)
+ ZTC(2,3)=DCMPLX(SH*XIG*X11,0D0)
+ ZTC(2,4)=DCMPLX(SH*XIG*X22,0D0)
+ ZTC(2,5)=DCMPLX(SH*XIG*X12,0D0)
+ ZTC(2,6)=DCMPLX(SH*XIG*X21,0D0)
+ ZTC(3,4)=-SM1122
+ ZTC(3,5)=-SM1112
+ ZTC(3,6)=-SM1121
+ ZTC(4,5)=-SM2212
+ ZTC(4,6)=-SM2221
+ ZTC(5,6)=-SM1221
+
+ DO 110 I=1,5
+ DO 100 J=I+1,6
+ ZTC(J,I)=ZTC(I,J)
+ 100 CONTINUE
+ 110 CONTINUE
+ CALL PYLDCM(ZTC,6,6,INDX,D)
+ DO 130 I=1,6
+ DO 120 J=1,6
+ YTC(I,J)=(0D0,0D0)
+ IF(I.EQ.J) YTC(I,J)=(1D0,0D0)
+ 120 CONTINUE
+ 130 CONTINUE
+
+ DO 140 I=1,6
+ CALL PYBKSB(ZTC,6,6,INDX,YTC(1,I))
+ 140 CONTINUE
+ DGGS=YTC(1,1)
+ DVVS=YTC(2,2)
+ DGVS=YTC(1,2)
+
+ XIG=SQRT(PYALPS(-TH)/ALPRHT)
+C.........TH LOOP
+ ZTC(1,1)=DCMPLX(TH)
+ ZTC(2,2)=DCMPLX(TH-PMAS(PYCOMP(3100021),1)**2)
+ ZTC(3,3)=DCMPLX(TH-PMAS(PYCOMP(3100113),1)**2)
+ ZTC(4,4)=DCMPLX(TH-PMAS(PYCOMP(3400113),1)**2)
+ ZTC(5,5)=DCMPLX(TH-PMAS(PYCOMP(3200113),1)**2)
+ ZTC(6,6)=DCMPLX(TH-PMAS(PYCOMP(3300113),1)**2)
+ ZTC(1,2)=(0D0,0D0)
+ ZTC(1,3)=DCMPLX(TH*XIG,0D0)
+ ZTC(1,4)=ZTC(1,3)
+ ZTC(1,5)=ZTC(1,2)
+ ZTC(1,6)=ZTC(1,2)
+ ZTC(2,3)=DCMPLX(TH*XIG*X11,0D0)
+ ZTC(2,4)=DCMPLX(TH*XIG*X22,0D0)
+ ZTC(2,5)=DCMPLX(TH*XIG*X12,0D0)
+ ZTC(2,6)=DCMPLX(TH*XIG*X21,0D0)
+ ZTC(3,4)=-SM1122
+ ZTC(3,5)=-SM1112
+ ZTC(3,6)=-SM1121
+ ZTC(4,5)=-SM2212
+ ZTC(4,6)=-SM2221
+ ZTC(5,6)=-SM1221
+ DO 160 I=1,5
+ DO 150 J=I+1,6
+ ZTC(J,I)=ZTC(I,J)
+ 150 CONTINUE
+ 160 CONTINUE
+ CALL PYLDCM(ZTC,6,6,INDX,D)
+ DO 180 I=1,6
+ DO 170 J=1,6
+ YTC(I,J)=(0D0,0D0)
+ IF(I.EQ.J) YTC(I,J)=(1D0,0D0)
+ 170 CONTINUE
+ 180 CONTINUE
+ DO 190 I=1,6
+ CALL PYBKSB(ZTC,6,6,INDX,YTC(1,I))
+ 190 CONTINUE
+ DGGT=YTC(1,1)
+ DVVT=YTC(2,2)
+ DGVT=YTC(1,2)
+
+ XIG=SQRT(PYALPS(-UH)/ALPRHT)
+C.........UH LOOP
+ ZTC(1,1)=DCMPLX(UH,0D0)
+ ZTC(2,2)=DCMPLX(UH-PMAS(PYCOMP(3100021),1)**2)
+ ZTC(3,3)=DCMPLX(UH-PMAS(PYCOMP(3100113),1)**2)
+ ZTC(4,4)=DCMPLX(UH-PMAS(PYCOMP(3400113),1)**2)
+ ZTC(5,5)=DCMPLX(UH-PMAS(PYCOMP(3200113),1)**2)
+ ZTC(6,6)=DCMPLX(UH-PMAS(PYCOMP(3300113),1)**2)
+ ZTC(1,2)=(0D0,0D0)
+ ZTC(1,3)=DCMPLX(UH*XIG,0D0)
+ ZTC(1,4)=ZTC(1,3)
+ ZTC(1,5)=ZTC(1,2)
+ ZTC(1,6)=ZTC(1,2)
+ ZTC(2,3)=DCMPLX(UH*XIG*X11,0D0)
+ ZTC(2,4)=DCMPLX(UH*XIG*X22,0D0)
+ ZTC(2,5)=DCMPLX(UH*XIG*X12,0D0)
+ ZTC(2,6)=DCMPLX(UH*XIG*X21,0D0)
+ ZTC(3,4)=-SM1122
+ ZTC(3,5)=-SM1112
+ ZTC(3,6)=-SM1121
+ ZTC(4,5)=-SM2212
+ ZTC(4,6)=-SM2221
+ ZTC(5,6)=-SM1221
+ DO 210 I=1,5
+ DO 200 J=I+1,6
+ ZTC(J,I)=ZTC(I,J)
+ 200 CONTINUE
+ 210 CONTINUE
+ CALL PYLDCM(ZTC,6,6,INDX,D)
+ DO 230 I=1,6
+ DO 220 J=1,6
+ YTC(I,J)=(0D0,0D0)
+ IF(I.EQ.J) YTC(I,J)=(1D0,0D0)
+ 220 CONTINUE
+ 230 CONTINUE
+ DO 240 I=1,6
+ CALL PYBKSB(ZTC,6,6,INDX,YTC(1,I))
+ 240 CONTINUE
+ DGGU=YTC(1,1)
+ DVVU=YTC(2,2)
+ DGVU=YTC(1,2)
+
+ IF(IMDL.EQ.1) THEN
+ DQQS=DGGS+DVVS*DCMPLX(TANT3**2)-DGVS*DCMPLX(2D0*TANT3)
+ DQQT=DGGT+DVVT*DCMPLX(TANT3**2)-DGVT*DCMPLX(2D0*TANT3)
+ DQQU=DGGU+DVVU*DCMPLX(TANT3**2)-DGVU*DCMPLX(2D0*TANT3)
+ DQTS=DGGS-DVVS-DGVS*DCMPLX(TANT3-1D0/TANT3)
+ DQGS=DGGS-DGVS*DCMPLX(TANT3)
+ DTGS=DGGS+DGVS*DCMPLX(1D0/TANT3)
+ ELSE
+ DQQS=DGGS+DVVS*DCMPLX(1D0/TANT3**2)+DGVS*DCMPLX(2D0/TANT3)
+ DQQT=DGGT+DVVT*DCMPLX(1D0/TANT3**2)+DGVT*DCMPLX(2D0/TANT3)
+ DQQU=DGGU+DVVU*DCMPLX(1D0/TANT3**2)+DGVU*DCMPLX(2D0/TANT3)
+ DQTS=DGGS+DVVS*DCMPLX(1D0/TANT3**2)+DGVS*DCMPLX(2D0/TANT3)
+ DQGS=DGGS+DGVS*DCMPLX(1D0/TANT3)
+ DTGS=DGGS+DGVS*DCMPLX(1D0/TANT3)
+ ENDIF
+
+ SQDQTS=ABS(DQTS)**2
+ SQDQQS=ABS(DQQS)**2
+ SQDQQT=ABS(DQQT)**2
+ SQDQQU=ABS(DQQU)**2
+ SQDLGS=ABS(DCMPLX(SH)*DQGS-DCMPLX(1D0))**2
+ REDLGS=DBLE(DQGS)
+ SQDHGS=ABS(DCMPLX(SH)*DTGS-DCMPLX(1D0))**2
+ REDHGS=DBLE(DTGS)
+ SQDLGT=ABS(DCMPLX(TH)*DGGT-DCMPLX(1D0))**2
+
+ SQDGGS=ABS(DGGS)**2
+ SQDGGT=ABS(DGGT)**2
+ SQDGGU=ABS(DGGU)**2
+ REDGGS=DBLE(DGGS)
+ REDGGT=DBLE(DGGT)
+ REDGGU=DBLE(DGGU)
+ REDGTU=DBLE(DGGU*DCONJG(DGGT))
+ REDGSU=DBLE(DGGU*DCONJG(DGGS))
+ REDGST=DBLE(DGGS*DCONJG(DGGT))
+ REDQST=DBLE(DQQS*DCONJG(DQQT))
+ REDQTU=DBLE(DQQT*DCONJG(DQQU))
+ ENDIF
+ ENDIF
+
+
+C...Differential cross section expressions.
+
+ IF(ISUB.LE.190) THEN
+ IF(ISUB.EQ.149) THEN
+C...g + g -> eta_tc
+ KCTC=PYCOMP(KTECHN+331)
+ CALL PYWIDT(KTECHN+331,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=COMFAC*0.5D0/((SH-PMAS(KCTC,1)**2)**2+HS**2)
+ IF(ABS(SHR-PMAS(KCTC,1)).GT.PARP(48)*PMAS(KCTC,2)) FACBW=0D0
+ HP=SH
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 250
+ HI=HP*WDTP(3)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 250 CONTINUE
+
+ ELSEIF(ISUB.EQ.165) THEN
+C...q + qbar -> l+ + l- (including contact term for compositeness)
+ ZRATR=XWC*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ ZRATI=XWC*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ KFF=IABS(KFPR(ISUB,1))
+ EF=KCHG(KFF,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ VALF=VF+AF
+ VARF=VF-AF
+ FCOF=1D0
+ IF(KFF.LE.10) FCOF=3D0
+ WID2=1D0
+ IF(KFF.EQ.6) WID2=WIDS(6,1)
+ IF(KFF.EQ.7.OR.KFF.EQ.8) WID2=WIDS(KFF,1)
+ IF(KFF.EQ.17.OR.KFF.EQ.18) WID2=WIDS(KFF,1)
+ DO 260 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 260
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=VI+AI
+ VARI=VI-AI
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ IF((ITCM(5).EQ.1.AND.IABS(I).LE.2).OR.ITCM(5).EQ.2) THEN
+ FGZA=(EI*EF+VALI*VALF*ZRATR+RTCM(42)*SH/
+ & (AEM*RTCM(41)**2))**2+(VALI*VALF*ZRATI)**2+
+ & (EI*EF+VARI*VARF*ZRATR)**2+(VARI*VARF*ZRATI)**2
+ ELSE
+ FGZA=(EI*EF+VALI*VALF*ZRATR)**2+(VALI*VALF*ZRATI)**2+
+ & (EI*EF+VARI*VARF*ZRATR)**2+(VARI*VARF*ZRATI)**2
+ ENDIF
+ FGZB=(EI*EF+VALI*VARF*ZRATR)**2+(VALI*VARF*ZRATI)**2+
+ & (EI*EF+VARI*VALF*ZRATR)**2+(VARI*VALF*ZRATI)**2
+ FGZAB=AEM**2*(FGZA*UH2/SH2+FGZB*TH2/SH2)
+ IF((ITCM(5).EQ.3.AND.IABS(I).EQ.2).OR.(ITCM(5).EQ.4.AND.
+ & MOD(IABS(I),2).EQ.0)) FGZAB=FGZAB+SH2/(2D0*RTCM(41)**4)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=COMFAC*FCOI*FCOF*FGZAB*WID2
+ 260 CONTINUE
+
+ ELSEIF(ISUB.EQ.166) THEN
+C...q + q'bar -> l + nu_l (including contact term for compositeness)
+ WFAC=(1D0/4D0)*(AEM/XW)**2*UH2/((SH-SQMW)**2+GMMW**2)
+ WCIFAC=WFAC+SH2/(4D0*RTCM(41)**4)
+ KFF=IABS(KFPR(ISUB,1))
+ FCOF=1D0
+ IF(KFF.LE.10) FCOF=3D0
+ DO 280 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 280
+ IA=IABS(I)
+ DO 270 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 270
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 270
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 270
+ FCOI=1D0
+ IF(IA.LE.10) FCOI=VCKM((IA+1)/2,(JA+1)/2)*FACA/3D0
+ WID2=1D0
+ IF((I.GT.0.AND.MOD(I,2).EQ.0).OR.(J.GT.0.AND.
+ & MOD(J,2).EQ.0)) THEN
+ IF(KFF.EQ.5) WID2=WIDS(6,2)
+ IF(KFF.EQ.7) WID2=WIDS(8,2)*WIDS(7,3)
+ IF(KFF.EQ.17) WID2=WIDS(18,2)*WIDS(17,3)
+ ELSE
+ IF(KFF.EQ.5) WID2=WIDS(6,3)
+ IF(KFF.EQ.7) WID2=WIDS(8,3)*WIDS(7,2)
+ IF(KFF.EQ.17) WID2=WIDS(18,3)*WIDS(17,2)
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=COMFAC*FCOI*FCOF*WFAC*WID2
+ IF((ITCM(5).EQ.3.AND.IA.LE.2.AND.JA.LE.2).OR.ITCM(5).EQ.4)
+ & SIGH(NCHN)=COMFAC*FCOI*FCOF*WCIFAC*WID2
+ 270 CONTINUE
+ 280 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.200) THEN
+ IF(ISUB.EQ.191) THEN
+C...q + qbar -> rho_tc0.
+ KCTC=PYCOMP(KTECHN+113)
+ SQMRHT=PMAS(KCTC,1)**2
+ CALL PYWIDT(KTECHN+113,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=12D0*COMFAC/((SH-SQMRHT)**2+HS**2)
+ IF(ABS(SHR-PMAS(KCTC,1)).GT.PARP(48)*PMAS(KCTC,2)) FACBW=0D0
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ HP=(1D0/6D0)*(AEM**2/ALPRHT)*(SQMRHT**2/SH)
+ XWRHT=(1D0-2D0*XW)/(4D0*XW*(1D0-XW))
+ BWZR=XWRHT*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ BWZI=XWRHT*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ DO 290 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 290
+ IA=IABS(I)
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.5D0*(VI+AI)
+ VARI=0.5D0*(VI-AI)
+ HI=HP*((EI+VALI*BWZR)**2+(VALI*BWZI)**2+
+ & (EI+VARI*BWZR)**2+(VARI*BWZI)**2)
+ IF(IA.LE.10) HI=HI*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 290 CONTINUE
+
+ ELSEIF(ISUB.EQ.192) THEN
+C...q + qbar' -> rho_tc+/-.
+ KCTC=PYCOMP(KTECHN+213)
+ SQMRHT=PMAS(KCTC,1)**2
+ CALL PYWIDT(KTECHN+213,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=12D0*COMFAC/((SH-SQMRHT)**2+HS**2)
+ IF(ABS(SHR-PMAS(KCTC,1)).GT.PARP(48)*PMAS(KCTC,2)) FACBW=0D0
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ HP=(1D0/6D0)*(AEM**2/ALPRHT)*(SQMRHT**2/SH)*
+ & (0.25D0/XW**2)*SH**2/((SH-SQMW)**2+GMMW**2)
+ DO 310 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 310
+ IA=IABS(I)
+ DO 300 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 300
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 300
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 300
+ KCHR=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHR)/2)+WDTE(0,4))
+ HI=HP
+ IF(IA.LE.10) HI=HI*VCKM((IA+1)/2,(JA+1)/2)*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 300 CONTINUE
+ 310 CONTINUE
+
+ ELSEIF(ISUB.EQ.193) THEN
+C...q + qbar -> omega_tc0.
+ KCTC=PYCOMP(KTECHN+223)
+ SQMOMT=PMAS(KCTC,1)**2
+ CALL PYWIDT(KTECHN+223,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=12D0*COMFAC/((SH-SQMOMT)**2+HS**2)
+ IF(ABS(SHR-PMAS(KCTC,1)).GT.PARP(48)*PMAS(KCTC,2)) FACBW=0D0
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ HP=(1D0/6D0)*(AEM**2/ALPRHT)*(SQMOMT**2/SH)*
+ & (2D0*RTCM(2)-1D0)**2
+ BWZR=(0.5D0/(1D0-XW))*SH*(SH-SQMZ)/((SH-SQMZ)**2+GMMZ**2)
+ BWZI=(0.5D0/(1D0-XW))*SH*GMMZ/((SH-SQMZ)**2+GMMZ**2)
+ DO 320 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 320
+ IA=IABS(I)
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.5D0*(VI+AI)
+ VARI=0.5D0*(VI-AI)
+ HI=HP*((EI-VALI*BWZR)**2+(VALI*BWZI)**2+
+ & (EI-VARI*BWZR)**2+(VARI*BWZI)**2)
+ IF(IA.LE.10) HI=HI*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 320 CONTINUE
+
+ ELSEIF(ISUB.EQ.194) THEN
+C...f + fbar -> f' + fbar' via s-channel rho_tc, omega_tc a_T0.
+C...Default final state is e+e-
+ KFA=KFPR(ISUBSV,1)
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ HP=AEM**2*COMFAC
+
+ SN2W=2D0*SQRT(XW*XW1)
+C TANW=SQRT(PARU(102)/(1D0-PARU(102)))
+C CT2W=(1D0-2D0*PARU(102))/(2D0*PARU(102)/TANW)
+
+ QUPD=2D0*RTCM(2)-1D0
+ FAR=SQRT(AEM/ALPRHT)
+ FAO=FAR*QUPD
+ FZR=FAR*CT2W
+ FZO=-FAO*TANW
+C...RTCM(47) is the ratio g_{rho_T}/g_{a_T}
+ FZX=-FAR/SN2W*RTCM(47)
+ SFAR=FAR**2
+ SFAO=FAO**2
+ SFZR=FZR**2
+ SFZO=FZO**2
+ SFZX=FZX**2
+ CALL PYWIDT(23,SH,WDTP,WDTE)
+ SSMZ=DCMPLX(1D0-PMAS(23,1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+113,SH,WDTP,WDTE)
+ SSMR=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+113),1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+223,SH,WDTP,WDTE)
+ SSMO=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+223),1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+115,SH,WDTP,WDTE)
+ SSMX=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+115),1)**2/SH,WDTP(0)/SHR)
+C...Propagator including a_T^0
+ DETD=(FAR*FZO-FAO*FZR)**2+SSMZ*SSMR*SSMO-SFZR*SSMO-
+ $ SFZO*SSMR-SFAR*SSMO*SSMZ-SFAO*SSMR*SSMZ
+C...Add in techni-a contribution
+ DETD=SSMX*DETD-SFZX*(SSMR*SSMO-SFAO*SSMR-SFAR*SSMO)
+ DAA=(-SSMX*(SFZO*SSMR+SFZR*SSMO-SSMO*SSMR*SSMZ)-
+ $ SFZX*SSMR*SSMO)/DETD/SH
+ DZZ=-(SFAO*SSMR+SFAR*SSMO-SSMO*SSMR)/DETD/SH*SSMX
+ DAZ=(FAR*FZR*SSMO+FAO*FZO*SSMR)/DETD/SH*SSMX
+
+ XWRHT=1D0/(4D0*XW*(1D0-XW))
+ KFF=IABS(KFPR(ISUB,1))
+ EF=KCHG(KFF,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ VALF=0.5D0*(VF+AF)
+ VARF=0.5D0*(VF-AF)
+ FCOF=1D0
+ IF(KFF.LE.10) FCOF=3D0
+
+ WID2=1D0
+ IF(KFF.GE.6.AND.KFF.LE.8) WID2=WIDS(KFF,1)
+ IF(KFF.EQ.17.OR.KFF.EQ.18) WID2=WIDS(KFF,1)
+ DZZ=DZZ*DCMPLX(XWRHT,0D0)
+ DAZ=DAZ*DCMPLX(SQRT(XWRHT),0D0)
+
+ DO 330 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 330
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.5D0*(VI+AI)
+ VARI=0.5D0*(VI-AI)
+ FCOI=FCOF
+ IF(IABS(I).LE.10) FCOI=FCOI/3D0
+ DIFLL=ABS(EI*EF*DAA+VALI*VALF*DZZ+DAZ*(EI*VALF+EF*VALI))**2
+ DIFRR=ABS(EI*EF*DAA+VARI*VARF*DZZ+DAZ*(EI*VARF+EF*VARI))**2
+ DIFLR=ABS(EI*EF*DAA+VALI*VARF*DZZ+DAZ*(EI*VARF+EF*VALI))**2
+ DIFRL=ABS(EI*EF*DAA+VARI*VALF*DZZ+DAZ*(EI*VALF+EF*VARI))**2
+ FACSIG=(DIFLL+DIFRR)*((UH-SQM4)**2+SH*SQM4)+
+ & (DIFLR+DIFRL)*((TH-SQM3)**2+SH*SQM3)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HP*FCOI*FACSIG*WID2
+ 330 CONTINUE
+
+ ELSEIF(ISUB.EQ.195) THEN
+C...f + fbar' -> f'' + fbar''' via s-channel rho_tc+, a_T+
+ KFA=KFPR(ISUBSV,1)
+ KFB=KFA+1
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ FACTC=COMFAC*(AEM**2/12D0/XW**2)*(UH-SQM3)*(UH-SQM4)*3D0
+
+ FWR=SQRT(AEM/ALPRHT)/(2D0*SQRT(XW))
+C...RTCM(47) is the ratio g_{rho_T}/g_{a_T}
+C
+C...Propagator including a_T^+
+ FWX=-FWR*RTCM(47)
+ CALL PYWIDT(24,SH,WDTP,WDTE)
+ SSMZ=DCMPLX(1D0-PMAS(24,1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+213,SH,WDTP,WDTE)
+ SSMR=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+213),1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+215,SH,WDTP,WDTE)
+ SSMX=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+215),1)**2/SH,WDTP(0)/SHR)
+ DETD=SSMX*(SSMZ*SSMR-DCMPLX(FWR**2,0D0))-
+ & DCMPLX(FWX**2,0D0)*SSMR
+ DWW=SSMR*SSMX/DETD/SH
+ FCOF=1D0
+ IF(KFA.LE.8) FCOF=3D0
+ HP=FACTC*ABS(DWW)**2*FCOF
+
+ DO 350 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 350
+ IA=IABS(I)
+ DO 340 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 340
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 340
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 340
+ KCHR=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ HI=HP
+ IF(IA.LE.10) HI=HI*VCKM((IA+1)/2,(JA+1)/2)/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*WIDS(KFA,(5-KCHR)/2)*WIDS(KFB,(5+KCHR)/2)
+ 340 CONTINUE
+ 350 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.380) THEN
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ IF(ISUB.EQ.361) THEN
+ FAR=SQRT(AEM/ALPRHT)
+ FAO=FAR*QUPD
+ FZR=FAR*CT2W
+ FZO=-FAO*TANW
+C...RTCM(47) is the ratio g_{rho_T}/g_{a_T}
+ FZX=-FAR/SN2W*RTCM(47)
+ SFAR=FAR**2
+ SFAO=FAO**2
+ SFZR=FZR**2
+ SFZO=FZO**2
+ SFZX=FZX**2
+ CALL PYWIDT(23,SH,WDTP,WDTE)
+ SSMZ=DCMPLX(1D0-PMAS(23,1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+113,SH,WDTP,WDTE)
+ SSMR=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+113),1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+223,SH,WDTP,WDTE)
+ SSMO=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+223),1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+115,SH,WDTP,WDTE)
+ SSMX=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+115),1)**2/SH,WDTP(0)/SHR)
+ DETD=(FAR*FZO-FAO*FZR)**2+SSMZ*SSMR*SSMO-SFZR*SSMO-
+ $ SFZO*SSMR-SFAR*SSMO*SSMZ-SFAO*SSMR*SSMZ
+C...Add in techni-a contribution
+ DETD=SSMX*DETD-SFZX*(SSMR*SSMO-SFAO*SSMR-SFAR*SSMO)
+ DARHO=-(SSMX*(-FAR*SFZO+FAO*FZO*FZR+FAR*SSMO*SSMZ)-
+ $ SFZX*FAR*SSMO)/DETD/SH
+ DZRHO=-(-FZR*SFAO+FAO*FZO*FAR+FZR*SSMO)/DETD/SH*SSMX
+ DAOME=-(SSMX*(-FAO*SFZR+FAR*FZO*FZR+FAO*SSMR*SSMZ)-
+ $ SFZX*FAO*SSMR)/DETD/SH
+ DZOME=-(-FZO*SFAR+FAR*FAO*FZR+FZO*SSMR)/DETD/SH*SSMX
+ DAAST=-FZX*(FAO*FZO*SSMR+FAR*FZR*SSMO)/DETD/SH
+ DZAST=-FZX*(SSMR*SSMO-SFAO*SSMR-SFAR*SSMO)/DETD/SH
+ DAA=(-SSMX*(SFZO*SSMR+SFZR*SSMO-SSMO*SSMR*SSMZ)-
+ $ SFZX*SSMR*SSMO)/DETD/SH
+ DZZ=-(SFAO*SSMR+SFAR*SSMO-SSMO*SSMR)/DETD/SH*SSMX
+ DAZ=(FAR*FZR*SSMO+FAO*FZO*SSMR)/DETD/SH*SSMX
+
+C...f + fbar -> gamma pi_tc, gamma pi_tc', Z pi_tc, Z pi_tc',
+C...W+W-, W pi_tc, pi_T pi_T, etc.
+ FACA=(SH**2*BE34**2-(TH-UH)**2)
+ VFAC=(TH**2+UH**2-2D0*SQM3*SQM4)
+ AFAC=(TH**2+UH**2-2D0*SQM3*SQM4+4D0*SH*SQM3)
+ FANOM=SQRT(PARU(1)*AEM)*ITCM(1)/PARU(2)**2/RTCM(1)
+ HP=(1D0/24D0)*AEM**2*COMFAC*3D0*SH
+ DO 370 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 370
+ IA=IABS(I)
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ VALI=0.25D0*(VI+AI) ! = \zeta_{iL} in PRD67-115011
+ VARI=0.25D0*(VI-AI) ! = \zeta_{iR} in PRD67-115011
+C...........Eqs. (5) and (6) in LSTC-rates.pdf
+ F2L=(EI*DARHO+VALI*DZRHO/SQRT(XW*XW1))*VRGP
+ F2L=F2L+(EI*DAOME+VALI*DZOME/SQRT(XW*XW1))*VOGP
+ F2L=F2L+(EI*DAAST+VALI*DZAST/SQRT(XW*XW1))*VXGP
+ F2L=F2L+FANOM*(VAGP*(EI*DAA+VALI*DAZ/SQRT(XW*XW1))+
+ $ VZGP*(EI*DAZ+VALI*DZZ/SQRT(XW*XW1)))
+ F2R=(EI*DARHO+VARI*DZRHO/SQRT(XW*XW1))*VRGP
+ F2R=F2R+(EI*DAOME+VARI*DZOME/SQRT(XW*XW1))*VOGP
+ F2R=F2R+(EI*DAAST+VARI*DZAST/SQRT(XW*XW1))*VXGP
+ F2R=F2R+FANOM*(VAGP*(EI*DAA+VARI*DAZ/SQRT(XW*XW1))+
+ $ VZGP*(EI*DAZ+VARI*DZZ/SQRT(XW*XW1)))
+ HI=(ABS(F2L)**2+ABS(F2R)**2)*VFAC
+C...........Eqs. (5) and (7) in LSTC-rates.pdf
+ F2L=(EI*DARHO+VALI*DZRHO/SQRT(XW*XW1))*ARGP
+ F2L=F2L+(EI*DAOME+VALI*DZOME/SQRT(XW*XW1))*AOGP
+ F2L=F2L+(EI*DAAST+VALI*DZAST/SQRT(XW*XW1))*AXGP
+ F2R=(EI*DARHO+VARI*DZRHO/SQRT(XW*XW1))*ARGP
+ F2R=F2R+(EI*DAOME+VARI*DZOME/SQRT(XW*XW1))*AOGP
+ F2R=F2R+(EI*DAAST+VARI*DZAST/SQRT(XW*XW1))*AXGP
+ HJ=(ABS(F2L)**2+ABS(F2R)**2)*AFAC
+C
+C...........Eqs. (24) in PRD67-115011 with DAA, etc.terms dropped.
+C
+c$$$ F2L=EI*(DARHO/FAR+(DAA+CT2W*DAZ))+
+c$$$ $ VALI*(CT2W*DZRHO/FZR+(CT2W*DZZ+DAZ))/SQRT(XW*XW1)
+c$$$ F2R=EI*(DARHO/FAR+(DAA+CT2W*DAZ))+
+c$$$ $ VARI*(CT2W*DZRHO/FZR+(CT2W*DZZ+DAZ))/SQRT(XW*XW1)
+ F2L=EI*DARHO/FAR + VALI*CT2W*DZRHO/FZR/SQRT(XW*XW1)
+ F2R=EI*DARHO/FAR + VARI*CT2W*DZRHO/FZR/SQRT(XW*XW1)
+ HK=(ABS(F2L)**2+ABS(F2R)**2)*2D0*FACA*CAB2/SH
+ HI=HI+HJ+HK
+ IF(IA.LE.10) HI=HI/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ IF(KFA.EQ.KFB) THEN
+ SIGH(NCHN)=HI*HP*WIDS(PYCOMP(KFA),1)
+ ELSEIF(ISUBSV.EQ.362.OR.ISUBSV.EQ.368) THEN
+ SIGH(NCHN)=HI*HP*WIDS(PYCOMP(KFA),2)*WIDS(PYCOMP(KFB),3)
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=HI*HP*WIDS(PYCOMP(KFA),3)*WIDS(PYCOMP(KFB),2)
+ ELSE
+ SIGH(NCHN)=HI*HP*WIDS(PYCOMP(KFA),2)*WIDS(PYCOMP(KFB),2)
+ ENDIF
+ 370 CONTINUE
+
+ ELSEIF(ISUB.EQ.370) THEN
+C...f + fbar' -> W_L Z_L, W_L Z_T, W_T, Z_L, W_L pi_tc, Z_L pi_tc, pi_tc pi_tc
+C...f + fbar' -> gamma pi_tc, etc.
+ FACA=(SH**2*BE34**2-(TH-UH)**2)
+ FANOM=SQRT(PARU(1)*AEM)*ITCM(1)/PARU(2)**2/RTCM(1)
+ VFAC=(TH**2+UH**2-2D0*SQM3*SQM4)
+ AFAC=(TH**2+UH**2-2D0*SQM3*SQM4+4D0*SH*SQM3)
+ ALPRHT=2.16D0*(3D0/ITCM(1))
+ FACHP=(1D0/48D0)*AEM**2/XW*COMFAC*3D0*SH
+ FWR=SQRT(AEM/ALPRHT)/(2D0*SQRT(XW))
+C...RTCM(47) is the ratio g_{rho_T}/g_{a_T}
+ FWX=-FWR*RTCM(47)
+ CALL PYWIDT(24,SH,WDTP,WDTE)
+ SSMZ=DCMPLX(1D0-PMAS(24,1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+213,SH,WDTP,WDTE)
+ SSMR=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+213),1)**2/SH,WDTP(0)/SHR)
+ CALL PYWIDT(KTECHN+215,SH,WDTP,WDTE)
+ SSMX=DCMPLX(1D0-PMAS(PYCOMP(KTECHN+215),1)**2/SH,WDTP(0)/SHR)
+ DETD=SSMX*(SSMZ*SSMR-DCMPLX(FWR**2,0D0))-
+ & DCMPLX(FWX**2,0D0)*SSMR
+ DWW=SSMR*SSMX/DETD/SH
+ DWRHO=-DCMPLX(FWR,0D0)*SSMX/DETD/SH
+ DWAST=-DCMPLX(FWX,0D0)*SSMR/DETD/SH
+ HP=FACHP*(AFAC*ABS(DWRHO*ARGP+DWAST*AXGP)**2+
+ $ VFAC*ABS(FANOM*DWW*VWGP+DWRHO*VRGP+DWAST*VXGP)**2)
+C
+C...........Eq. (25) in PRD67-115011 with DWW term dropped.
+C
+c$$$ HP=HP+.5D0*FACHP*CAB2*FACA/XW/SH*ABS(DWW + DWRHO/FWR)**2
+ HP=HP+.5D0*FACHP*CAB2*FACA/XW/SH*ABS(DWRHO/FWR)**2
+C...Add in W_L Z_T axial and vector contributions.
+ IF(ISUBSV.EQ.370) HP=HP+FACHP*RTCM(3)**2*(
+ $ (TH**2+UH**2-2D0*SQM3*SQM4+4D0*SH*SQM4)* !AFAC w/ switched masses.
+ $ ABS(DWRHO/RTCM(13)-DWAST/RTCM(49)*CS2W)**2/SN2W**2+
+ $ VFAC*QUPD**2*XW/XW1*ABS(DWRHO)**2/RTCM(12)**2)
+ DO 410 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 410
+ IA=IABS(I)
+ DO 400 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 400
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 400
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 400
+ KCHR=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ HI=HP
+ IF(IA.LE.10) HI=HI*VCKM((IA+1)/2,(JA+1)/2)/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(ISUBSV.EQ.374.OR.ISUBSV.EQ.378) THEN
+ SIGH(NCHN)=HI*WIDS(PYCOMP(KFA),(5-KCHR)/2)
+ ELSE
+ SIGH(NCHN)=HI*WIDS(PYCOMP(KFA),(5-KCHR)/2)*
+ & WIDS(PYCOMP(KFB),2)
+ ENDIF
+ 400 CONTINUE
+ 410 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.390) THEN
+ IF(ISUB.EQ.381) THEN
+C...f + f' -> f + f' (g exchange)
+ FACQQ1=COMFAC*AS**2*4D0/9D0*(SH2+UH2)*SQDQQT
+ FACQQB=COMFAC*AS**2*4D0/9D0*((SH2+UH2)*SQDQQT*FACA-
+ & MSTP(34)*2D0/3D0*UH2*REDQST)
+ FACQQ2=COMFAC*AS**2*4D0/9D0*(SH2+TH2)*SQDQQU
+ FACQQI=-COMFAC*AS**2*4D0/9D0*MSTP(34)*2D0/3D0*SH2/(TH*UH)
+ RATQQI=(FACQQ1+FACQQ2+FACQQI)/(FACQQ1+FACQQ2)
+ IF(ITCM(5).GE.1.AND.ITCM(5).LE.4) THEN
+C...Modifications from contact interactions (compositeness)
+ FACCI1=FACQQ1+COMFAC*(SH2/RTCM(41)**4)
+ FACCIB=FACQQB+COMFAC*(8D0/9D0)*(AS*RTCM(42)/RTCM(41)**2)*
+ & (UH2/TH+UH2/SH)+COMFAC*(5D0/3D0)*(UH2/RTCM(41)**4)
+ FACCI2=FACQQ2+COMFAC*(8D0/9D0)*(AS*RTCM(42)/RTCM(41)**2)*
+ & (SH2/TH+SH2/UH)+COMFAC*(5D0/3D0)*(SH2/RTCM(41)**4)
+ FACCI3=FACQQ1+COMFAC*(UH2/RTCM(41)**4)
+ RATCII=(FACCI1+FACCI2+FACQQI)/(FACCI1+FACCI2)
+ ELSEIF(ITCM(5).EQ.5) THEN
+ FACCI1=FACQQ1
+ FACCIB=FACQQB
+ FACCI2=FACQQ2
+ FACCI3=FACQQ1
+CSM.......Check this change from
+CSM RATCII=1D0
+ RATCII=RATQQI
+ ENDIF
+ DO 430 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.MSTP(58).OR.KFAC(1,I).EQ.0) GOTO 430
+ DO 420 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.MSTP(58).OR.KFAC(2,J).EQ.0) GOTO 420
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(ITCM(5).LE.0.OR.(ITCM(5).EQ.1.AND.(IA.GE.3.OR.
+ & JA.GE.3))) THEN
+ SIGH(NCHN)=FACQQ1
+ IF(I.EQ.-J) SIGH(NCHN)=FACQQB
+ ELSE
+ SIGH(NCHN)=FACCI1
+ IF(I*J.LT.0) SIGH(NCHN)=FACCI3
+ IF(I.EQ.-J) SIGH(NCHN)=FACCIB
+ ENDIF
+ IF(I.EQ.J) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ IF(ITCM(5).LE.0.OR.(ITCM(5).EQ.1.AND.IA.GE.3)) THEN
+ SIGH(NCHN-1)=0.5D0*FACQQ1*RATQQI
+ SIGH(NCHN)=0.5D0*FACQQ2*RATQQI
+ ELSE
+ SIGH(NCHN-1)=0.5D0*FACCI1*RATCII
+ SIGH(NCHN)=0.5D0*FACCI2*RATCII
+ ENDIF
+ ENDIF
+ 420 CONTINUE
+ 430 CONTINUE
+
+ ELSEIF(ISUB.EQ.382) THEN
+C...f + fbar -> f' + fbar' (q + qbar -> q' + qbar' only)
+ CALL PYWIDT(21,SH,WDTP,WDTE)
+ FACQQF=COMFAC*AS**2*4D0/9D0*(TH2+UH2)
+ FACQQB=FACQQF*SQDQQS*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ IF(ITCM(5).EQ.1) THEN
+C...Modifications from contact interactions (compositeness)
+ FACCIB=FACQQB
+ DO 440 I=1,2
+ FACCIB=FACCIB+COMFAC*(UH2/RTCM(41)**4)*(WDTE(I,1)+
+ & WDTE(I,2)+WDTE(I,4))
+ 440 CONTINUE
+ ELSEIF(ITCM(5).GE.2.AND.ITCM(5).LE.4) THEN
+ FACCIB=FACQQB+COMFAC*(UH2/RTCM(41)**4)*
+ & (WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ ELSEIF(ITCM(5).EQ.5) THEN
+ FACQQB=FACQQF*SQDQQS*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4)-
+ & WDTE(5,1)-WDTE(5,2)-WDTE(5,4))
+ FACCIB=FACQQF*SQDQTS*(WDTE(5,1)+WDTE(5,2)+WDTE(5,4))
+ ENDIF
+ DO 450 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 450
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ IF(ITCM(5).LE.0.OR.(ITCM(5).EQ.1.AND.IABS(I).GE.3)) THEN
+ SIGH(NCHN)=FACQQB
+ ELSEIF(ITCM(5).EQ.5) THEN
+ SIGH(NCHN)=FACQQB
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACCIB
+ ELSE
+ SIGH(NCHN)=FACCIB
+ ENDIF
+ 450 CONTINUE
+
+ ELSEIF(ISUB.EQ.383) THEN
+C...f + fbar -> g + g (q + qbar -> g + g only)
+ FACGG1=COMFAC*AS**2*32D0/27D0*(UH/TH-(2D0+MSTP(34)*1D0/4D0)*
+ & UH2/SH2+9D0/4D0*TH*UH/SH2*SQDLGS)
+ FACGG2=COMFAC*AS**2*32D0/27D0*(TH/UH-(2D0+MSTP(34)*1D0/4D0)*
+ & TH2/SH2+9D0/4D0*TH*UH/SH2*SQDLGS)
+ IF(ITCM(5).EQ.5) THEN
+ FACGG3=COMFAC*AS**2*32D0/27D0*(UH/TH-(2D0+MSTP(34)*1D0/4D0)*
+ & UH2/SH2+9D0/4D0*TH*UH/SH2*SQDHGS)
+ FACGG4=COMFAC*AS**2*32D0/27D0*(TH/UH-(2D0+MSTP(34)*1D0/4D0)*
+ & TH2/SH2+9D0/4D0*TH*UH/SH2*SQDHGS)
+ ENDIF
+ DO 460 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 460
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACGG1
+ IF(ITCM(5).EQ.5.AND.IABS(I).EQ.5) SIGH(NCHN)=0.5D0*FACGG3
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=0.5D0*FACGG2
+ IF(ITCM(5).EQ.5.AND.IABS(I).EQ.5) SIGH(NCHN)=0.5D0*FACGG4
+ 460 CONTINUE
+
+ ELSEIF(ISUB.EQ.384) THEN
+C...f + g -> f + g (q + g -> q + g only)
+ FACQG1=COMFAC*AS**2*4D0/9D0*((2D0+MSTP(34)*1D0/4D0)*UH2/TH2-
+ & UH/SH-9D0/4D0*SH*UH/TH2*SQDLGT)*FACA
+ FACQG2=COMFAC*AS**2*4D0/9D0*((2D0+MSTP(34)*1D0/4D0)*SH2/TH2-
+ & SH/UH-9D0/4D0*SH*UH/TH2*SQDLGT)
+ DO 480 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.10) GOTO 480
+ DO 470 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 470
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 470
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQG1
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQG2
+ 470 CONTINUE
+ 480 CONTINUE
+
+ ELSEIF(ISUB.EQ.385) THEN
+C...g + g -> f + fbar (g + g -> q + qbar only)
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 500
+ IDC0=MDCY(21,2)-1
+C...Begin by d, u, s flavours.
+ FLAVWT=0D0
+ IF(MDME(IDC0+1,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(1,1)**2/SH))
+ IF(MDME(IDC0+2,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(2,1)**2/SH))
+ IF(MDME(IDC0+3,1).GE.1) FLAVWT=FLAVWT+
+ & SQRT(MAX(0D0,1D0-4D0*PMAS(3,1)**2/SH))
+ FACQQ1=COMFAC*AS**2*1D0/6D0*(UH/TH-(2D0+MSTP(34)*1D0/4D0)*
+ & UH2/SH2+9D0/4D0*TH*UH/SH2*SQDLGS)*FLAVWT*FACA
+ FACQQ2=COMFAC*AS**2*1D0/6D0*(TH/UH-(2D0+MSTP(34)*1D0/4D0)*
+ & TH2/SH2+9D0/4D0*TH*UH/SH2*SQDLGS)*FLAVWT*FACA
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ2
+C...Next c and b flavours: modified that and uhat for fixed
+C...cos(theta-hat).
+ DO 490 IFL=4,5
+ SQMAVG=PMAS(IFL,1)**2
+ IF(MDME(IDC0+IFL,1).GE.1.AND.SH.GT.4.04D0*SQMAVG) THEN
+ BE34=SQRT(1D0-4D0*SQMAVG/SH)
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ THUHQ=THQ*UHQ-SQMAVG*SH
+ IF(MSTP(34).EQ.0) THEN
+ FACQQ1=UHQ/THQ-2D0*UHQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/THQ**2
+ FACQQ2=THQ/UHQ-2D0*THQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/UHQ**2
+ ELSE
+ FACQQ1=UHQ/THQ-2.25D0*UHQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & THQ**2+0.5D0*SQMAVG*(THQ+SQMAVG)/THQ**2-SQMAVG**2/(SH*THQ)
+ FACQQ2=THQ/UHQ-2.25D0*THQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & UHQ**2+0.5D0*SQMAVG*(UHQ+SQMAVG)/UHQ**2-SQMAVG**2/(SH*UHQ)
+ ENDIF
+ IF(ITCM(5).GE.5) THEN
+ IF(IFL.EQ.4) THEN
+ FACQQ1=FACQQ1+2.25D0*SQMAVG*(THQ-UHQ)/(SH*THQ)*REDLGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDLGS
+ FACQQ2=FACQQ2+2.25D0*SQMAVG*(UHQ-THQ)/(SH*UHQ)*REDLGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDLGS
+ ELSE
+ FACQQ1=FACQQ1+2.25D0*SQMAVG*(THQ-UHQ)/(SH*THQ)*REDHGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDHGS
+ FACQQ2=FACQQ2+2.25D0*SQMAVG*(UHQ-THQ)/(SH*UHQ)*REDHGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDHGS
+ ENDIF
+ ENDIF
+ FACQQ1=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ1*BE34
+ FACQQ2=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ2*BE34
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1+2*(IFL-3)
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2+2*(IFL-3)
+ SIGH(NCHN)=FACQQ2
+ ENDIF
+ 490 CONTINUE
+ 500 CONTINUE
+
+ ELSEIF(ISUB.EQ.386) THEN
+C...g + g -> g + g
+ IF(ITCM(5).LE.4) THEN
+ FACGG1=COMFAC*AS**2*9D0/4D0*(SH2/TH2+2D0*SH/TH+3D0+
+ & 2D0*TH/SH+TH2/SH2)*FACA
+ FACGG2=COMFAC*AS**2*9D0/4D0*(UH2/SH2+2D0*UH/SH+3D0+
+ & 2D0*SH/UH+SH2/UH2)*FACA
+ FACGG3=COMFAC*AS**2*9D0/4D0*(TH2/UH2+2D0*TH/UH+3D0+
+ & 2D0*UH/TH+UH2/TH2)
+ ELSE
+ GST= (12D0 + 40D0*TH/SH + 56D0*TH2/SH2 + 32D0*TH**3/SH**3 +
+ & 16D0*TH**4/SH**4 + SQDGGS*(4D0*SH2 + 16D0*SH*TH + 16D0*TH2)+
+ & 4D0*REDGST*(SH + 2D0*TH)*
+ & (2D0*SH**3 - 3D0*SH2*TH - 2D0*SH*TH2 + 2D0*TH**3)/SH2 +
+ & 2D0*REDGGS*(2D0*SH - 12D0*TH2/SH - 8D0*TH**3/SH2) +
+ & 2D0*REDGGT*(4D0*SH - 22D0*TH - 68D0*TH2/SH - 60D0*TH**3/SH2-
+ & 32D0*TH**4/SH**3 - 16D0*TH**5/SH**4) +
+ & SQDGGT*(16D0*SH2 + 16D0*SH*TH + 68D0*TH2 + 144D0*TH**3/SH +
+ & 96D0*TH**4/SH2 + 32D0*TH**5/SH**3 + 16D0*TH**6/SH**4))/16D0
+ GSU= (12D0 + 40D0*UH/SH + 56D0*UH2/SH2 + 32D0*UH**3/SH**3 +
+ & 16D0*UH**4/SH**4 + SQDGGS*(4D0*SH2 + 16D0*SH*UH + 16D0*UH2)+
+ & 4D0*REDGSU*(SH + 2D0*UH)*
+ & (2D0*SH**3 - 3D0*SH2*UH - 2D0*SH*UH2 + 2D0*UH**3)/SH2 +
+ & 2D0*REDGGS*(2D0*SH - 12D0*UH2/SH - 8D0*UH**3/SH2) +
+ & 2D0*REDGGU*(4D0*SH - 22D0*UH - 68D0*UH2/SH - 60D0*UH**3/SH2-
+ & 32D0*UH**4/SH**3 - 16D0*UH**5/SH**4) +
+ & SQDGGU*(16D0*SH2 + 16D0*SH*UH + 68D0*UH2 + 144D0*UH**3/SH +
+ & 96D0*UH**4/SH2 + 32D0*UH**5/SH**3 + 16D0*UH**6/SH**4))/16D0
+ GUT= (12D0 - 16D0*TH*(TH - UH)**2*UH/SH**4 +
+ & 4D0*REDGGU*(2D0*TH**5 - 15D0*TH**4*UH - 48D0*TH**3*UH2 -
+ & 58D0*TH2*UH**3 - 10D0*TH*UH**4 + UH**5)/SH**4 +
+ & 4D0*REDGGT*(TH**5 - 10D0*TH**4*UH - 58D0*TH**3*UH2 -
+ & 48D0*TH2*UH**3 - 15D0*TH*UH**4 + 2D0*UH**5)/SH**4 +
+ & 4D0*SQDGGU*(4D0*TH**6 + 20D0*TH**5*UH + 57D0*TH**4*UH2 +
+ & 72D0*TH**3*UH**3+ 38D0*TH2*UH**4+4D0*TH*UH**5 +UH**6)/SH**4+
+ & 4D0*SQDGGT*(4D0*UH**6 + 4D0*TH**5*UH + 38D0*TH**4*UH2 +
+ & 72D0*TH**3*UH**3 +57D0*TH2*UH**4+20D0*TH*UH**5+TH**6)/SH**4+
+ & 2D0*REDGTU*((TH - UH)**2* (TH**4 + 20D0*TH**3*UH +
+ & 30D0*TH2*UH2 + 20D0*TH*UH**3 + UH**4) +
+ & SH2*(7D0*TH**4 + 52D0*TH**3*UH + 274D0*TH2*UH2 +
+ & 52D0*TH*UH**3 + 7D0*UH**4))/(2D0*SH**4))/16D0
+ FACGG1=COMFAC*AS**2*9D0/4D0*GST*FACA
+ FACGG2=COMFAC*AS**2*9D0/4D0*GSU*FACA
+ FACGG3=COMFAC*AS**2*9D0/4D0*GUT
+ ENDIF
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 510
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=0.5D0*FACGG1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=0.5D0*FACGG2
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=3
+ SIGH(NCHN)=0.5D0*FACGG3
+ 510 CONTINUE
+
+ ELSEIF(ISUB.EQ.387) THEN
+C...q + qbar -> Q + Qbar
+ SQMAVG=0.5D0*(SQM3+SQM4)-0.25D0*(SQM3-SQM4)**2/SH
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ FACQQB=COMFAC*AS**2*4D0/9D0*((THQ**2+UHQ**2)/SH2+
+ & 2D0*SQMAVG/SH)
+ IF(ITCM(5).GE.5) THEN
+ IF(MINT(55).EQ.5.OR.MINT(55).EQ.6) THEN
+ FACQQB=FACQQB*SH2*SQDQTS
+ ELSE
+ FACQQB=FACQQB*SH2*SQDQQS
+ ENDIF
+ ENDIF
+ IF(MSTP(35).GE.1) FACQQB=FACQQB*PYHFTH(SH,SQMAVG,0D0)
+ WID2=1D0
+ IF(MINT(55).EQ.6) WID2=WIDS(6,1)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=WIDS(MINT(55),1)
+ FACQQB=FACQQB*WID2
+ DO 520 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 520
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQB
+ 520 CONTINUE
+
+ ELSEIF(ISUB.EQ.388) THEN
+C...g + g -> Q + Qbar
+ SQMAVG=0.5D0*(SQM3+SQM4)-0.25D0*(SQM3-SQM4)**2/SH
+ THQ=-0.5D0*SH*(1D0-BE34*CTH)
+ UHQ=-0.5D0*SH*(1D0+BE34*CTH)
+ THUHQ=THQ*UHQ-SQMAVG*SH
+ IF(MSTP(34).EQ.0) THEN
+ FACQQ1=UHQ/THQ-2D0*UHQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/THQ**2
+ FACQQ2=THQ/UHQ-2D0*THQ**2/SH2+4D0*(SQMAVG/SH)*THUHQ/UHQ**2
+ ELSE
+ FACQQ1=UHQ/THQ-2.25D0*UHQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & THQ**2+0.5D0*SQMAVG*(THQ+SQMAVG)/THQ**2-SQMAVG**2/(SH*THQ)
+ FACQQ2=THQ/UHQ-2.25D0*THQ**2/SH2+4.5D0*(SQMAVG/SH)*THUHQ/
+ & UHQ**2+0.5D0*SQMAVG*(UHQ+SQMAVG)/UHQ**2-SQMAVG**2/(SH*UHQ)
+ ENDIF
+ IF(ITCM(5).GE.5) THEN
+ IF(MINT(55).EQ.5.OR.MINT(55).EQ.6) THEN
+ FACQQ1=FACQQ1+2.25D0*SQMAVG*(THQ-UHQ)/(SH*THQ)*REDHGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDHGS
+ FACQQ2=FACQQ2+2.25D0*SQMAVG*(UHQ-THQ)/(SH*UHQ)*REDHGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDHGS
+ ELSE
+ FACQQ1=FACQQ1+2.25D0*SQMAVG*(THQ-UHQ)/(SH*THQ)*REDLGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDLGS
+ FACQQ2=FACQQ2+2.25D0*SQMAVG*(UHQ-THQ)/(SH*UHQ)*REDLGS+
+ & 2.25D0*THQ*UHQ/SH2*SQDLGS
+ ENDIF
+ ENDIF
+ FACQQ1=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ1
+ FACQQ2=COMFAC*FACA*AS**2*(1D0/6D0)*FACQQ2
+ IF(MSTP(35).GE.1) THEN
+ FATRE=PYHFTH(SH,SQMAVG,2D0/7D0)
+ FACQQ1=FACQQ1*FATRE
+ FACQQ2=FACQQ2*FATRE
+ ENDIF
+ WID2=1D0
+ IF(MINT(55).EQ.6) WID2=WIDS(6,1)
+ IF(MINT(55).EQ.7.OR.MINT(55).EQ.8) WID2=WIDS(MINT(55),1)
+ FACQQ1=FACQQ1*WID2
+ FACQQ2=FACQQ2*WID2
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 530
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACQQ1
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=2
+ SIGH(NCHN)=FACQQ2
+ 530 CONTINUE
+ ENDIF
+ ENDIF
+
+CMRENNA--
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSGEX
+C...Subprocess cross sections for assorted exotic processes,
+C...including Z'/W'/LQ/R/f*/H++/Z_R/W_R/G*.
+C...Auxiliary to PYSIGH.
+
+ SUBROUTINE PYSGEX(NCHN,SIGS)
+
+C...Double precision and integer declarations
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYPARS/,/PYINT1/,/PYINT2/,
+ &/PYINT3/,/PYINT4/,/PYTCSM/,/PYSGCM/
+C...Local arrays
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5)
+
+C...Differential cross section expressions.
+
+ IF(ISUB.LE.160) THEN
+ IF(ISUB.EQ.141) THEN
+C...f + fbar -> gamma*/Z0/Z'0
+ SQMZP=PMAS(32,1)**2
+ MINT(61)=2
+ CALL PYWIDT(32,SH,WDTP,WDTE)
+ HP0=AEM/3D0*SH
+ HP1=AEM/3D0*XWC*SH
+ HP2=HP1
+ HS=SHR*VINT(117)
+ HSP=SHR*WDTP(0)
+ FACZP=4D0*COMFAC*3D0
+ DO 100 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 100
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI)
+ VI=AI-4D0*EI*XWV
+ IA=IABS(I)
+ IF(IA.LT.10) THEN
+ IF(IA.LE.2) THEN
+ VPI=PARU(123-2*MOD(IABS(I),2))
+ API=PARU(124-2*MOD(IABS(I),2))
+ ELSEIF(IA.LE.4) THEN
+ VPI=PARJ(182-2*MOD(IABS(I),2))
+ API=PARJ(183-2*MOD(IABS(I),2))
+ ELSE
+ VPI=PARJ(190-2*MOD(IABS(I),2))
+ API=PARJ(191-2*MOD(IABS(I),2))
+ ENDIF
+ ELSE
+ IF(IA.LE.12) THEN
+ VPI=PARU(127-2*MOD(IABS(I),2))
+ API=PARU(128-2*MOD(IABS(I),2))
+ ELSEIF(IA.LE.14) THEN
+ VPI=PARJ(186-2*MOD(IABS(I),2))
+ API=PARJ(187-2*MOD(IABS(I),2))
+ ELSE
+ VPI=PARJ(194-2*MOD(IABS(I),2))
+ API=PARJ(195-2*MOD(IABS(I),2))
+ ENDIF
+ ENDIF
+ HI0=HP0
+ IF(IABS(I).LE.10) HI0=HI0*FACA/3D0
+ HI1=HP1
+ IF(IABS(I).LE.10) HI1=HI1*FACA/3D0
+ HI2=HP2
+ IF(IABS(I).LE.10) HI2=HI2*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACZP*(EI**2/SH2*HI0*HP0*VINT(111)+EI*VI*
+ & (1D0-SQMZ/SH)/((SH-SQMZ)**2+HS**2)*(HI0*HP1+HI1*HP0)*
+ & VINT(112)+EI*VPI*(1D0-SQMZP/SH)/((SH-SQMZP)**2+HSP**2)*
+ & (HI0*HP2+HI2*HP0)*VINT(113)+(VI**2+AI**2)/
+ & ((SH-SQMZ)**2+HS**2)*HI1*HP1*VINT(114)+(VI*VPI+AI*API)*
+ & ((SH-SQMZ)*(SH-SQMZP)+HS*HSP)/(((SH-SQMZ)**2+HS**2)*
+ & ((SH-SQMZP)**2+HSP**2))*(HI1*HP2+HI2*HP1)*VINT(115)+
+ & (VPI**2+API**2)/((SH-SQMZP)**2+HSP**2)*HI2*HP2*VINT(116))
+ 100 CONTINUE
+
+ ELSEIF(ISUB.EQ.142) THEN
+C...f + fbar' -> W'+/-
+ SQMWP=PMAS(34,1)**2
+ CALL PYWIDT(34,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMWP)**2+HS**2)*3D0
+ HP=AEM/(24D0*XW)*SH
+ DO 120 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 120
+ IA=IABS(I)
+ DO 110 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 110
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 110
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 110
+ KCHW=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ HI=HP*(PARU(133)**2+PARU(134)**2)
+ IF(IA.LE.10) HI=HP*(PARU(131)**2+PARU(132)**2)*
+ & VCKM((IA+1)/2,(JA+1)/2)*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHW)/2)+WDTE(0,4))
+ SIGH(NCHN)=HI*FACBW*HF
+ 110 CONTINUE
+ 120 CONTINUE
+
+ ELSEIF(ISUB.EQ.144) THEN
+C...f + fbar' -> R
+ SQMR=PMAS(41,1)**2
+ CALL PYWIDT(41,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMR)**2+HS**2)*3D0
+ HP=AEM/(12D0*XW)*SH
+ DO 140 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 140
+ IA=IABS(I)
+ DO 130 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 130
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.IABS(IA-JA).NE.2) GOTO 130
+ HI=HP
+ IF(IA.LE.10) HI=HI*FACA/3D0
+ HF=SHR*(WDTE(0,1)+WDTE(0,(10-(I+J))/4)+WDTE(0,4))
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 130 CONTINUE
+ 140 CONTINUE
+
+ ELSEIF(ISUB.EQ.145) THEN
+C...q + l -> LQ (leptoquark)
+ SQMLQ=PMAS(42,1)**2
+ CALL PYWIDT(42,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMLQ)**2+HS**2)
+ IF(ABS(SHR-PMAS(42,1)).GT.PARP(48)*PMAS(42,2)) FACBW=0D0
+ HP=AEM/4D0*SH
+ KFLQQ=KFDP(MDCY(42,2),1)
+ KFLQL=KFDP(MDCY(42,2),2)
+ DO 160 I=MMIN1,MMAX1
+ IF(KFAC(1,I).EQ.0) GOTO 160
+ IA=IABS(I)
+ IF(IA.NE.KFLQQ.AND.IA.NE.IABS(KFLQL)) GOTO 160
+ DO 150 J=MMIN2,MMAX2
+ IF(KFAC(2,J).EQ.0) GOTO 150
+ JA=IABS(J)
+ IF(JA.NE.KFLQQ.AND.JA.NE.IABS(KFLQL)) GOTO 150
+ IF(I*J.NE.KFLQQ*KFLQL) GOTO 150
+ IF(JA.EQ.IA) GOTO 150
+ IF(IA.EQ.KFLQQ) KCHLQ=ISIGN(1,I)
+ IF(JA.EQ.KFLQQ) KCHLQ=ISIGN(1,J)
+ HI=HP*PARU(151)
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHLQ)/2)+WDTE(0,4))
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 150 CONTINUE
+ 160 CONTINUE
+
+ ELSEIF(ISUB.EQ.146) THEN
+C...e + gamma* -> e* (excited lepton)
+ KFQSTR=KFPR(ISUB,1)
+ KCQSTR=PYCOMP(KFQSTR)
+ KFQEXC=MOD(KFQSTR,KEXCIT)
+ CALL PYWIDT(KFQSTR,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=COMFAC/((SH-PMAS(KCQSTR,1)**2)**2+HS**2)
+ QF=-RTCM(43)/2D0-RTCM(44)/2D0
+ FACBW=FACBW*AEM*QF**2*SH/RTCM(41)**2
+ IF(ABS(SHR-PMAS(KCQSTR,1)).GT.PARP(48)*PMAS(KCQSTR,2))
+ & FACBW=0D0
+ HP=SH
+ DO 180 I=-KFQEXC,KFQEXC,2*KFQEXC
+ DO 170 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 170
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 170
+ HI=HP
+ IF(I.GT.0) HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ IF(I.LT.0) HF=SHR*(WDTE(0,1)+WDTE(0,3)+WDTE(0,4))
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 170 CONTINUE
+ 180 CONTINUE
+
+ ELSEIF(ISUB.EQ.147.OR.ISUB.EQ.148) THEN
+C...d + g -> d* and u + g -> u* (excited quarks)
+ KFQSTR=KFPR(ISUB,1)
+ KCQSTR=PYCOMP(KFQSTR)
+ KFQEXC=MOD(KFQSTR,KEXCIT)
+ CALL PYWIDT(KFQSTR,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=COMFAC/((SH-PMAS(KCQSTR,1)**2)**2+HS**2)
+ FACBW=FACBW*AS*RTCM(45)**2*SH/(3D0*RTCM(41)**2)
+ IF(ABS(SHR-PMAS(KCQSTR,1)).GT.PARP(48)*PMAS(KCQSTR,2))
+ & FACBW=0D0
+ HP=SH
+ DO 200 I=-KFQEXC,KFQEXC,2*KFQEXC
+ DO 190 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 190
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 190
+ HI=HP
+ IF(I.GT.0) HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ IF(I.LT.0) HF=SHR*(WDTE(0,1)+WDTE(0,3)+WDTE(0,4))
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 190 CONTINUE
+ 200 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.190) THEN
+ IF(ISUB.EQ.162) THEN
+C...q + g -> LQ + lbar; LQ=leptoquark
+ SQMLQ=PMAS(42,1)**2
+ FACLQ=COMFAC*FACA*PARU(151)*(AS*AEM/6D0)*(-TH/SH)*
+ & (UH2+SQMLQ**2)/(UH-SQMLQ)**2
+ KFLQQ=KFDP(MDCY(42,2),1)
+ DO 220 I=MMINA,MMAXA
+ IF(IABS(I).NE.KFLQQ) GOTO 220
+ KCHLQ=ISIGN(1,I)
+ DO 210 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 210
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 210
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACLQ*WIDS(42,(5-KCHLQ)/2)
+ 210 CONTINUE
+ 220 CONTINUE
+
+ ELSEIF(ISUB.EQ.163) THEN
+C...g + g -> LQ + LQbar; LQ=leptoquark
+ SQMLQ=PMAS(42,1)**2
+ FACLQ=COMFAC*FACA*WIDS(42,1)*(AS**2/2D0)*
+ & (7D0/48D0+3D0*(UH-TH)**2/(16D0*SH2))*(1D0+2D0*SQMLQ*TH/
+ & (TH-SQMLQ)**2+2D0*SQMLQ*UH/(UH-SQMLQ)**2+4D0*SQMLQ**2/
+ & ((TH-SQMLQ)*(UH-SQMLQ)))
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 230
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+C...Since don't know proper colour flow, randomize between alternatives
+ ISIG(NCHN,3)=INT(1.5D0+PYR(0))
+ SIGH(NCHN)=FACLQ
+ 230 CONTINUE
+
+ ELSEIF(ISUB.EQ.164) THEN
+C...q + qbar -> LQ + LQbar; LQ=leptoquark
+ DELTA=0.25D0*(SQM3-SQM4)**2/SH
+ SQMLQ=0.5D0*(SQM3+SQM4)-DELTA
+ TH=TH-DELTA
+ UH=UH-DELTA
+C SQMLQ=PMAS(42,1)**2
+ FACLQA=COMFAC*WIDS(42,1)*(AS**2/9D0)*
+ & (SH*(SH-4D0*SQMLQ)-(UH-TH)**2)/SH2
+ FACLQS=COMFAC*WIDS(42,1)*((PARU(151)**2*AEM**2/8D0)*
+ & (-SH*TH-(SQMLQ-TH)**2)/TH2+(PARU(151)*AEM*AS/18D0)*
+ & ((SQMLQ-TH)*(UH-TH)+SH*(SQMLQ+TH))/(SH*TH))
+ KFLQQ=KFDP(MDCY(42,2),1)
+ DO 240 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 240
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACLQA
+ IF(IABS(I).EQ.KFLQQ) SIGH(NCHN)=FACLQA+FACLQS
+ 240 CONTINUE
+
+ ELSEIF(ISUB.EQ.167.OR.ISUB.EQ.168) THEN
+C...q + q' -> q" + d* and q + q' -> q" + u* (excited quarks)
+ KFQSTR=KFPR(ISUB,2)
+ KCQSTR=PYCOMP(KFQSTR)
+ KFQEXC=MOD(KFQSTR,KEXCIT)
+ FACQSA=COMFAC*(SH/RTCM(41)**2)**2*(1D0-SQM4/SH)
+ FACQSB=COMFAC*0.25D0*(SH/RTCM(41)**2)**2*(1D0-SQM4/SH)*
+ & (1D0+SQM4/SH)*(1D0+CTH)*(1D0+((SH-SQM4)/(SH+SQM4))*CTH)
+C...Propagators: as simulated in PYOFSH and as desired
+ GMMQ=PMAS(KCQSTR,1)*PMAS(KCQSTR,2)
+ HBW4=GMMQ/((SQM4-PMAS(KCQSTR,1)**2)**2+GMMQ**2)
+ CALL PYWIDT(KFQSTR,SQM4,WDTP,WDTE)
+ GMMQC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMQC/((SQM4-PMAS(KCQSTR,1)**2)**2+GMMQC**2)
+ FACQSA=FACQSA*HBW4C/HBW4
+ FACQSB=FACQSB*HBW4C/HBW4
+C...Branching ratios.
+ BRPOS=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))/WDTP(0)
+ BRNEG=(WDTE(0,1)+WDTE(0,3)+WDTE(0,4))/WDTP(0)
+ DO 260 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.6.OR.KFAC(1,I).EQ.0) GOTO 260
+ DO 250 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.6.OR.KFAC(2,J).EQ.0) GOTO 250
+ IF(IA.EQ.KFQEXC.AND.I.EQ.J) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(I.GT.0) SIGH(NCHN)=(4D0/3D0)*FACQSA*BRPOS
+ IF(I.LT.0) SIGH(NCHN)=(4D0/3D0)*FACQSA*BRNEG
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ IF(J.GT.0) SIGH(NCHN)=(4D0/3D0)*FACQSA*BRPOS
+ IF(J.LT.0) SIGH(NCHN)=(4D0/3D0)*FACQSA*BRNEG
+ ELSEIF((IA.EQ.KFQEXC.OR.JA.EQ.KFQEXC).AND.I*J.GT.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(JA.EQ.KFQEXC) ISIG(NCHN,3)=2
+ IF(ISIG(NCHN,ISIG(NCHN,3)).GT.0) SIGH(NCHN)=FACQSA*BRPOS
+ IF(ISIG(NCHN,ISIG(NCHN,3)).LT.0) SIGH(NCHN)=FACQSA*BRNEG
+ ELSEIF(IA.EQ.KFQEXC.AND.I.EQ.-J) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(I.GT.0) SIGH(NCHN)=(8D0/3D0)*FACQSB*BRPOS
+ IF(I.LT.0) SIGH(NCHN)=(8D0/3D0)*FACQSB*BRNEG
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ IF(J.GT.0) SIGH(NCHN)=(8D0/3D0)*FACQSB*BRPOS
+ IF(J.LT.0) SIGH(NCHN)=(8D0/3D0)*FACQSB*BRNEG
+ ELSEIF(I.EQ.-J) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(I.GT.0) SIGH(NCHN)=FACQSB*BRPOS
+ IF(I.LT.0) SIGH(NCHN)=FACQSB*BRNEG
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ IF(J.GT.0) SIGH(NCHN)=FACQSB*BRPOS
+ IF(J.LT.0) SIGH(NCHN)=FACQSB*BRNEG
+ ELSEIF(IA.EQ.KFQEXC.OR.JA.EQ.KFQEXC) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(JA.EQ.KFQEXC) ISIG(NCHN,3)=2
+ IF(ISIG(NCHN,ISIG(NCHN,3)).GT.0) SIGH(NCHN)=FACQSB*BRPOS
+ IF(ISIG(NCHN,ISIG(NCHN,3)).LT.0) SIGH(NCHN)=FACQSB*BRNEG
+ ENDIF
+ 250 CONTINUE
+ 260 CONTINUE
+
+ ELSEIF(ISUB.EQ.169) THEN
+C...q + qbar -> e + e* (excited lepton)
+ KFQSTR=KFPR(ISUB,2)
+ KCQSTR=PYCOMP(KFQSTR)
+ KFQEXC=MOD(KFQSTR,KEXCIT)
+ FACQSB=(COMFAC/12D0)*(SH/RTCM(41)**2)**2*(1D0-SQM4/SH)*
+ & (1D0+SQM4/SH)*(1D0+CTH)*(1D0+((SH-SQM4)/(SH+SQM4))*CTH)
+C...Propagators: as simulated in PYOFSH and as desired
+ GMMQ=PMAS(KCQSTR,1)*PMAS(KCQSTR,2)
+ HBW4=GMMQ/((SQM4-PMAS(KCQSTR,1)**2)**2+GMMQ**2)
+ CALL PYWIDT(KFQSTR,SQM4,WDTP,WDTE)
+ GMMQC=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMQC/((SQM4-PMAS(KCQSTR,1)**2)**2+GMMQC**2)
+ FACQSB=FACQSB*HBW4C/HBW4
+C...Branching ratios.
+ BRPOS=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))/WDTP(0)
+ BRNEG=(WDTE(0,1)+WDTE(0,3)+WDTE(0,4))/WDTP(0)
+ DO 270 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF(I.EQ.0.OR.IA.GT.6.OR.KFAC(1,I).EQ.0) GOTO 270
+ J=-I
+ JA=IABS(J)
+ IF(J.EQ.0.OR.JA.GT.6.OR.KFAC(2,J).EQ.0) GOTO 270
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ IF(I.GT.0) SIGH(NCHN)=FACQSB*BRPOS
+ IF(I.LT.0) SIGH(NCHN)=FACQSB*BRNEG
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=2
+ IF(J.GT.0) SIGH(NCHN)=FACQSB*BRPOS
+ IF(J.LT.0) SIGH(NCHN)=FACQSB*BRNEG
+ 270 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.360) THEN
+ IF(ISUB.EQ.341.OR.ISUB.EQ.342) THEN
+C...l + l -> H_L++/-- or H_R++/--.
+ KFRES=KFPR(ISUB,1)
+ KFREC=PYCOMP(KFRES)
+ CALL PYWIDT(KFRES,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=8D0*COMFAC/((SH-PMAS(KFREC,1)**2)**2+HS**2)
+ DO 290 I=MMIN1,MMAX1
+ IA=IABS(I)
+ IF((IA.NE.11.AND.IA.NE.13.AND.IA.NE.15).OR.KFAC(1,I).EQ.0)
+ & GOTO 290
+ DO 280 J=MMIN2,MMAX2
+ JA=IABS(J)
+ IF((JA.NE.11.AND.JA.NE.13.AND.JA.NE.15).OR.KFAC(2,J).EQ.0)
+ & GOTO 280
+ IF(I*J.LT.0) GOTO 280
+ KCHH=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ HI=SH*PARP(181+3*((IA-11)/2)+(JA-11)/2)**2/(8D0*PARU(1))
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHH/2)/2)+WDTE(0,4))
+ SIGH(NCHN)=HI*FACBW*HF
+ 280 CONTINUE
+ 290 CONTINUE
+
+ ELSEIF(ISUB.GE.343.AND.ISUB.LE.348) THEN
+C...l + gamma -> H_L++/-- l' or l + gamma -> H_R++/-- l'.
+ KFRES=KFPR(ISUB,1)
+ KFREC=PYCOMP(KFRES)
+C...Propagators: as simulated in PYOFSH and as desired
+ HBW3=PMAS(KFREC,1)*PMAS(KFREC,2)/((SQM3-PMAS(KFREC,1)**2)**2+
+ & (PMAS(KFREC,1)*PMAS(KFREC,2))**2)
+ CALL PYWIDT(KFRES,SQM3,WDTP,WDTE)
+ GMMC=SQRT(SQM3)*WDTP(0)
+ HBW3C=GMMC/((SQM3-PMAS(KFREC,1)**2)**2+GMMC**2)
+ FHCC=COMFAC*AEM*HBW3C/HBW3
+ DO 310 I=MMINA,MMAXA
+ IA=IABS(I)
+ IF(IA.NE.11.AND.IA.NE.13.AND.IA.NE.15) GOTO 310
+ SQML=PMAS(IA,1)**2
+ J=ISIGN(KFPR(ISUB,2),-I)
+ KCHH=ISIGN(2,KCHG(IA,1)*ISIGN(1,I))
+ WIDSC=(WDTE(0,1)+WDTE(0,(5-KCHH/2)/2)+WDTE(0,4))/WDTP(0)
+ SMM1=8D0*(SH+TH-SQM3)*(SH+TH-2D0*SQM3-SQML-SQM4)/
+ & (UH-SQM3)**2
+ SMM2=2D0*((2D0*SQM3-3D0*SQML)*SQM4+(SQML-2D0*SQM4)*TH-
+ & (TH-SQM4)*SH)/(TH-SQM4)**2
+ SMM3=2D0*((2D0*SQM3-3D0*SQM4+TH)*SQML-(2D0*SQML-SQM4+TH)*
+ & SH)/(SH-SQML)**2
+ SMM12=4D0*((2D0*SQML-SQM4-2D0*SQM3+TH)*SH+(TH-3D0*SQM3-
+ & 3D0*SQM4)*TH+(2D0*SQM3-2D0*SQML+3D0*SQM4)*SQM3)/
+ & ((UH-SQM3)*(TH-SQM4))
+ SMM13=-4D0*((TH+SQML-2D0*SQM4)*TH-(SQM3+3D0*SQML-2D0*SQM4)*
+ & SQM3+(SQM3+3D0*SQML+TH)*SH-(TH-SQM3+SH)**2)/
+ & ((UH-SQM3)*(SH-SQML))
+ SMM23=-4D0*((SQML-SQM4+SQM3)*TH-SQM3**2+SQM3*(SQML+SQM4)-
+ & 3D0*SQML*SQM4-(SQML-SQM4-SQM3+TH)*SH)/
+ & ((SH-SQML)*(TH-SQM4))
+ SMM=(SH/(SH-SQML))**2*(SMM1+SMM2+SMM3+SMM12+SMM13+SMM23)*
+ & PARP(181+3*((IA-11)/2)+(IABS(J)-11)/2)**2/(4D0*PARU(1))
+ DO 300 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,22).EQ.0) GOTO 300
+ IF(ISDE.EQ.2.AND.KFAC(1,22)*KFAC(2,I).EQ.0) GOTO 300
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=22
+ ISIG(NCHN,3)=0
+ SIGH(NCHN)=FHCC*SMM*WIDSC
+ 300 CONTINUE
+ 310 CONTINUE
+
+ ELSEIF(ISUB.EQ.349.OR.ISUB.EQ.350) THEN
+C...f + fbar -> H_L++ + H_L-- or H_R++ + H_R--
+ KFRES=KFPR(ISUB,1)
+ KFREC=PYCOMP(KFRES)
+ SQMH=PMAS(KFREC,1)**2
+ GMMH=PMAS(KFREC,1)*PMAS(KFREC,2)
+C...Propagators: H++/-- as simulated in PYOFSH and as desired
+ HBW3=GMMH/((SQM3-SQMH)**2+GMMH**2)
+ CALL PYWIDT(KFRES,SQM3,WDTP,WDTE)
+ GMMH3=SQRT(SQM3)*WDTP(0)
+ HBW3C=GMMH3/((SQM3-SQMH)**2+GMMH3**2)
+ HBW4=GMMH/((SQM4-SQMH)**2+GMMH**2)
+ CALL PYWIDT(KFRES,SQM4,WDTP,WDTE)
+ GMMH4=SQRT(SQM4)*WDTP(0)
+ HBW4C=GMMH4/((SQM4-SQMH)**2+GMMH4**2)
+C...Kinematical and coupling functions
+ FACHH=COMFAC*(HBW3C/HBW3)*(HBW4C/HBW4)*(TH*UH-SQM3*SQM4)
+ XWHH=(1D0-2D0*XWV)/(8D0*XWV*(1D0-XWV))
+C...Loop over allowed flavours
+ DO 320 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 320
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*XWV
+ FCOI=1D0
+ IF(IABS(I).LE.10) FCOI=FACA/3D0
+ IF(ISUB.EQ.349) THEN
+ HBWZ=1D0/((SH-SQMZ)**2+GMMZ**2)
+ IF(IABS(I).LT.10) THEN
+ DSIGHH=8D0*AEM**2*(EI**2/SH2+
+ & 2D0*EI*VI*XWHH*(SH-SQMZ)*HBWZ/SH+
+ & (VI**2+AI**2)*XWHH**2*HBWZ)
+ ELSE
+ IAOFF=181+3*((IABS(I)-11)/2)
+ HSUM=(PARP(IAOFF)**2+PARP(IAOFF+1)**2+PARP(IAOFF+2)**2)/
+ & (4D0*PARU(1))
+ DSIGHH=8D0*AEM**2*(EI**2/SH2+
+ & 2D0*EI*VI*XWHH*(SH-SQMZ)*HBWZ/SH+
+ & (VI**2+AI**2)*XWHH**2*HBWZ)+
+ & 8D0*AEM*(EI*HSUM/(SH*TH)+
+ & (VI+AI)*XWHH*HSUM*(SH-SQMZ)*HBWZ/TH)+
+ & 4D0*HSUM**2/TH2
+ ENDIF
+ ELSE
+ IF(IABS(I).LT.10) THEN
+ DSIGHH=8D0*AEM**2*EI**2/SH2
+ ELSE
+ IAOFF=181+3*((IABS(I)-11)/2)
+ HSUM=(PARP(IAOFF)**2+PARP(IAOFF+1)**2+PARP(IAOFF+2)**2)/
+ & (4D0*PARU(1))
+ DSIGHH=8D0*AEM**2*EI**2/SH2+8D0*AEM*EI*HSUM/(SH*TH)+
+ & 4D0*HSUM**2/TH2
+ ENDIF
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACHH*FCOI*DSIGHH
+ 320 CONTINUE
+
+ ELSEIF(ISUB.EQ.351.OR.ISUB.EQ.352) THEN
+C...f + f' -> f" + f"' + H++/-- (W+/- + W+/- -> H++/-- as inner process)
+ KFRES=KFPR(ISUB,1)
+ KFREC=PYCOMP(KFRES)
+ SQMH=PMAS(KFREC,1)**2
+ IF(ISUB.EQ.351) FACNOR=PARP(190)**8*PARP(192)**2
+ IF(ISUB.EQ.352) FACNOR=PARP(191)**6*2D0*
+ & PMAS(PYCOMP(9900024),1)**2
+ FACWW=COMFAC*FACNOR*TAUP*VINT(2)*VINT(219)
+ FACPRT=1D0/((VINT(204)**2-VINT(215))*
+ & (VINT(209)**2-VINT(216)))
+ FACPRU=1D0/((VINT(204)**2+2D0*VINT(217))*
+ & (VINT(209)**2+2D0*VINT(218)))
+ CALL PYWIDT(KFRES,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=(1D0/PARU(1))*VINT(2)/((SH-SQMH)**2+HS**2)
+ IF(ABS(SHR-PMAS(KFREC,1)).GT.PARP(48)*PMAS(KFREC,2))
+ & FACBW=0D0
+ DO 340 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 340
+ IF(ISUB.EQ.352.AND.IABS(I).GT.10) GOTO 340
+ KCHWI=(1-2*MOD(IABS(I),2))*ISIGN(1,I)
+ DO 330 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 330
+ IF(ISUB.EQ.352.AND.IABS(J).GT.10) GOTO 330
+ KCHWJ=(1-2*MOD(IABS(J),2))*ISIGN(1,J)
+ KCHH=KCHWI+KCHWJ
+ IF(IABS(KCHH).NE.2) GOTO 330
+ FACLR=VINT(180+I)*VINT(180+J)
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHH/2)/2)+WDTE(0,4))
+ IF(I.EQ.J.AND.IABS(I).GT.10) THEN
+ FACPRP=0.5D0*(FACPRT+FACPRU)**2
+ ELSE
+ FACPRP=FACPRT**2
+ ENDIF
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACLR*FACWW*FACPRP*FACBW*HF
+ 330 CONTINUE
+ 340 CONTINUE
+
+ ELSEIF(ISUB.EQ.353) THEN
+C...f + fbar -> Z_R0
+ SQMZR=PMAS(PYCOMP(KFPR(ISUB,1)),1)**2
+ CALL PYWIDT(KFPR(ISUB,1),SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMZR)**2+HS**2)*3D0
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ HP=(AEM/(3D0*(1D0-2D0*XW)))*XWC*SH
+ DO 350 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 350
+ IF(IABS(I).LE.8) THEN
+ EI=KCHG(IABS(I),1)/3D0
+ AI=SIGN(1D0,EI+0.1D0)*(1D0-2D0*XW)
+ VI=SIGN(1D0,EI+0.1D0)-4D0*EI*XW
+ ELSE
+ AI=-(1D0-2D0*XW)
+ VI=-1D0+4D0*XW
+ ENDIF
+ HI=HP*(VI**2+AI**2)
+ IF(IABS(I).LE.10) HI=HI*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=HI*FACBW*HF
+ 350 CONTINUE
+
+ ELSEIF(ISUB.EQ.354) THEN
+C...f + fbar' -> W_R+/-
+ SQMWR=PMAS(PYCOMP(KFPR(ISUB,1)),1)**2
+ CALL PYWIDT(KFPR(ISUB,1),SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ FACBW=4D0*COMFAC/((SH-SQMWR)**2+HS**2)*3D0
+ HP=AEM/(24D0*XW)*SH
+ DO 370 I=MMIN1,MMAX1
+ IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 370
+ IA=IABS(I)
+ DO 360 J=MMIN2,MMAX2
+ IF(J.EQ.0.OR.KFAC(2,J).EQ.0) GOTO 360
+ JA=IABS(J)
+ IF(I*J.GT.0.OR.MOD(IA+JA,2).EQ.0) GOTO 360
+ IF((IA.LE.10.AND.JA.GT.10).OR.(IA.GT.10.AND.JA.LE.10))
+ & GOTO 360
+ KCHW=(KCHG(IA,1)*ISIGN(1,I)+KCHG(JA,1)*ISIGN(1,J))/3
+ HI=HP*2D0
+ IF(IA.LE.10) HI=HI*VCKM((IA+1)/2,(JA+1)/2)*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=J
+ ISIG(NCHN,3)=1
+ HF=SHR*(WDTE(0,1)+WDTE(0,(5-KCHW)/2)+WDTE(0,4))
+ SIGH(NCHN)=HI*FACBW*HF
+ 360 CONTINUE
+ 370 CONTINUE
+ ENDIF
+
+ ELSEIF(ISUB.LE.400) THEN
+ IF(ISUB.EQ.391) THEN
+C...f + fbar -> G*.
+ KFGSTR=KFPR(ISUB,1)
+ KCGSTR=PYCOMP(KFGSTR)
+ CALL PYWIDT(KFGSTR,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACG=COMFAC*PARP(50)**2/(16D0*PARU(1))*SH*HF/
+ & ((SH-PMAS(KCGSTR,1)**2)**2+HS**2)
+C...Modify cross section in wings of peak.
+ FACG = FACG * SH**2 / PMAS(KCGSTR,1)**4
+ DO 380 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 380
+ HI=1D0
+ IF(IABS(I).LE.10) HI=HI*FACA/3D0
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACG*HI
+ 380 CONTINUE
+
+ ELSEIF(ISUB.EQ.392) THEN
+C...g + g -> G*.
+ KFGSTR=KFPR(ISUB,1)
+ KCGSTR=PYCOMP(KFGSTR)
+ CALL PYWIDT(KFGSTR,SH,WDTP,WDTE)
+ HS=SHR*WDTP(0)
+ HF=SHR*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ FACG=COMFAC*PARP(50)**2/(32D0*PARU(1))*SH*HF/
+ & ((SH-PMAS(KCGSTR,1)**2)**2+HS**2)
+C...Modify cross section in wings of peak.
+ FACG = FACG * SH**2 / PMAS(KCGSTR,1)**4
+ IF(KFAC(1,21)*KFAC(2,21).EQ.0) GOTO 390
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACG
+ 390 CONTINUE
+
+ ELSEIF(ISUB.EQ.393) THEN
+C...q + qbar -> g + G*.
+ KFGSTR=KFPR(ISUB,2)
+ KCGSTR=PYCOMP(KFGSTR)
+ FACG=COMFAC*PARP(50)**2*AS*SH/(72D0*PARU(1)*SQM4)*
+ & (4D0*(TH2+UH2)/SH2+9D0*(TH+UH)/SH+(TH2/UH+UH2/TH)/SH+
+ & 3D0*(4D0+TH/UH+UH/TH)+4D0*(SH/UH+SH/TH)+
+ & 2D0*SH2/(TH*UH))
+C...Propagators: as simulated in PYOFSH and as desired
+ GMMG=PMAS(KCGSTR,1)*PMAS(KCGSTR,2)
+ HBW4=GMMG/((SQM4-PMAS(KCGSTR,1)**2)**2+GMMG**2)
+ CALL PYWIDT(KFGSTR,SQM4,WDTP,WDTE)
+ HS=SQRT(SQM4)*WDTP(0)
+ HF=SQRT(SQM4)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ HBW4C=HF/((SQM4-PMAS(KCGSTR,1)**2)**2+HS**2)
+ FACG=FACG*HBW4C/HBW4
+ DO 400 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58).OR.
+ & KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 400
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=I
+ ISIG(NCHN,2)=-I
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACG
+ 400 CONTINUE
+
+ ELSEIF(ISUB.EQ.394) THEN
+C...q + g -> q + G*.
+ KFGSTR=KFPR(ISUB,2)
+ KCGSTR=PYCOMP(KFGSTR)
+ FACG=-COMFAC*PARP(50)**2*AS*SH/(192D0*PARU(1)*SQM4)*
+ & (4D0*(SH2+UH2)/(TH*SH)+9D0*(SH+UH)/SH+SH/UH+UH2/SH2+
+ & 3D0*TH*(4D0+SH/UH+UH/SH)/SH+4D0*TH2*(1D0/UH+1D0/SH)/SH+
+ & 2D0*TH2*TH/(UH*SH2))
+C...Propagators: as simulated in PYOFSH and as desired
+ GMMG=PMAS(KCGSTR,1)*PMAS(KCGSTR,2)
+ HBW4=GMMG/((SQM4-PMAS(KCGSTR,1)**2)**2+GMMG**2)
+ CALL PYWIDT(KFGSTR,SQM4,WDTP,WDTE)
+ HS=SQRT(SQM4)*WDTP(0)
+ HF=SQRT(SQM4)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ HBW4C=HF/((SQM4-PMAS(KCGSTR,1)**2)**2+HS**2)
+ FACG=FACG*HBW4C/HBW4
+ DO 420 I=MMINA,MMAXA
+ IF(I.EQ.0.OR.IABS(I).GT.MSTP(58)) GOTO 420
+ DO 410 ISDE=1,2
+ IF(ISDE.EQ.1.AND.KFAC(1,I)*KFAC(2,21).EQ.0) GOTO 410
+ IF(ISDE.EQ.2.AND.KFAC(1,21)*KFAC(2,I).EQ.0) GOTO 410
+ NCHN=NCHN+1
+ ISIG(NCHN,ISDE)=I
+ ISIG(NCHN,3-ISDE)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACG
+ 410 CONTINUE
+ 420 CONTINUE
+
+ ELSEIF(ISUB.EQ.395) THEN
+C...g + g -> g + G*.
+ KFGSTR=KFPR(ISUB,2)
+ KCGSTR=PYCOMP(KFGSTR)
+ FACG=COMFAC*3D0*PARP(50)**2*AS*SH/(32D0*PARU(1)*SQM4)*
+ & ((TH2+TH*UH+UH2)**2/(SH2*TH*UH)+2D0*(TH2/UH+UH2/TH)/SH+
+ & 3D0*(TH/UH+UH/TH)+2D0*(SH/UH+SH/TH)+SH2/(TH*UH))
+C...Propagators: as simulated in PYOFSH and as desired
+ GMMG=PMAS(KCGSTR,1)*PMAS(KCGSTR,2)
+ HBW4=GMMG/((SQM4-PMAS(KCGSTR,1)**2)**2+GMMG**2)
+ CALL PYWIDT(KFGSTR,SQM4,WDTP,WDTE)
+ HS=SQRT(SQM4)*WDTP(0)
+ HF=SQRT(SQM4)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
+ HBW4C=HF/((SQM4-PMAS(KCGSTR,1)**2)**2+HS**2)
+ FACG=FACG*HBW4C/HBW4
+ IF(KFAC(1,21)*KFAC(2,21).NE.0) THEN
+ NCHN=NCHN+1
+ ISIG(NCHN,1)=21
+ ISIG(NCHN,2)=21
+ ISIG(NCHN,3)=1
+ SIGH(NCHN)=FACG
+ ENDIF
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPDFU
+C...Gives electron, muon, tau, photon, pi+, neutron, proton and hyperon
+C...parton distributions according to a few different parametrizations.
+C...Note that what is coded is x times the probability distribution,
+C...i.e. xq(x,Q2) etc.
+
+ SUBROUTINE PYPDFU(KF,X,Q2,XPQ)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT8/XPVMD(-6:6),XPANL(-6:6),XPANH(-6:6),XPBEH(-6:6),
+ &XPDIR(-6:6)
+ COMMON/PYINT9/VXPVMD(-6:6),VXPANL(-6:6),VXPANH(-6:6),VXPDGM(-6:6)
+ COMMON/PYINTM/KFIVAL(2,3),NMI(2),IMI(2,800,2),NVC(2,-6:6),
+ & XASSOC(2,-6:6,240),XPSVC(-6:6,-1:240),PVCTOT(2,-1:1),
+ & XMI(2,240),PT2MI(240),IMISEP(0:240)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,/PYINT8/,
+ &/PYINT9/,/PYINTM/
+C...Local arrays.
+ DIMENSION XPQ(-25:25),XPEL(-25:25),XPGA(-6:6),VXPGA(-6:6),
+ &XPPI(-6:6),XPPR(-6:6),XPVAL(-6:6),PPAR(6,2)
+ SAVE PPAR
+
+C...Interface to PDFLIB.
+ COMMON/LW50513/XMIN,XMAX,Q2MIN,Q2MAX
+ SAVE /LW50513/
+ DOUBLE PRECISION XX,QQ,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GLU,
+ &VALUE(20),XMIN,XMAX,Q2MIN,Q2MAX
+ CHARACTER*20 PARM(20)
+ DATA VALUE/20*0D0/,PARM/20*' '/
+
+C...Data related to Schuler-Sjostrand photon distributions.
+ DATA ALAMGA/0.2D0/, PMCGA/1.3D0/, PMBGA/4.6D0/
+
+C...Valence PDF momentum integral parametrizations PER PARTON!
+ DATA (PPAR(1,IPAR),IPAR=1,2) /0.385D0,1.60D0/
+ DATA (PPAR(2,IPAR),IPAR=1,2) /0.480D0,1.56D0/
+ PAVG(IFL,Q2)=PPAR(IFL,1)/(1D0+PPAR(IFL,2)*
+ &LOG(LOG(MAX(Q2,1D0)/0.04D0)))
+
+C...Reset parton distributions.
+ MINT(92)=0
+ DO 100 KFL=-25,25
+ XPQ(KFL)=0D0
+ 100 CONTINUE
+ DO 110 KFL=-6,6
+ XPVAL(KFL)=0D0
+ 110 CONTINUE
+
+C...Check x and particle species.
+ IF(X.LE.0D0.OR.X.GE.1D0) THEN
+ WRITE(MSTU(11),5000) X
+ GOTO 9999
+ ENDIF
+ KFA=IABS(KF)
+ IF(KFA.NE.11.AND.KFA.NE.13.AND.KFA.NE.15.AND.KFA.NE.22.AND.
+ &KFA.NE.211.AND.KFA.NE.2112.AND.KFA.NE.2212.AND.KFA.NE.3122.AND.
+ &KFA.NE.3112.AND.KFA.NE.3212.AND.KFA.NE.3222.AND.KFA.NE.3312.AND.
+ &KFA.NE.3322.AND.KFA.NE.3334.AND.KFA.NE.111.AND.KFA.NE.321.AND.
+ &KFA.NE.310.AND.KFA.NE.130) THEN
+ WRITE(MSTU(11),5100) KF
+ GOTO 9999
+ ENDIF
+
+C...Electron (or muon or tau) parton distribution call.
+ IF(KFA.EQ.11.OR.KFA.EQ.13.OR.KFA.EQ.15) THEN
+ CALL PYPDEL(KFA,X,Q2,XPEL)
+ DO 120 KFL=-25,25
+ XPQ(KFL)=XPEL(KFL)
+ 120 CONTINUE
+
+C...Photon parton distribution call (VDM+anomalous).
+ ELSEIF(KFA.EQ.22.AND.MINT(109).LE.1) THEN
+ IF(MSTP(56).EQ.1.AND.MSTP(55).EQ.1) THEN
+ CALL PYPDGA(X,Q2,XPGA)
+ DO 130 KFL=-6,6
+ XPQ(KFL)=XPGA(KFL)
+ 130 CONTINUE
+ XPVU=4D0*(XPQ(2)-XPQ(1))/3D0
+ XPVAL(1)=XPVU/4D0
+ XPVAL(2)=XPVU
+ XPVAL(3)=MIN(XPQ(3),XPVU/4D0)
+ XPVAL(4)=MIN(XPQ(4),XPVU)
+ XPVAL(5)=MIN(XPQ(5),XPVU/4D0)
+ XPVAL(-1)=XPVAL(1)
+ XPVAL(-2)=XPVAL(2)
+ XPVAL(-3)=XPVAL(3)
+ XPVAL(-4)=XPVAL(4)
+ XPVAL(-5)=XPVAL(5)
+ ELSEIF(MSTP(56).EQ.1.AND.MSTP(55).GE.5.AND.MSTP(55).LE.8) THEN
+ Q2MX=Q2
+ P2MX=0.36D0
+ IF(MSTP(55).GE.7) P2MX=4.0D0
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ CALL PYGGAM(MSTP(55)-4,X,Q2MX,P2,MSTP(60),F2GAM,XPGA)
+ DO 140 KFL=-6,6
+ XPQ(KFL)=XPGA(KFL)
+ XPVAL(KFL)=VXPDGM(KFL)
+ 140 CONTINUE
+ VINT(231)=P2MX
+ ELSEIF(MSTP(56).EQ.1.AND.MSTP(55).GE.9.AND.MSTP(55).LE.12) THEN
+ Q2MX=Q2
+ P2MX=0.36D0
+ IF(MSTP(55).GE.11) P2MX=4.0D0
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ CALL PYGGAM(MSTP(55)-8,X,Q2MX,P2,MSTP(60),F2GAM,XPGA)
+ DO 150 KFL=-6,6
+ XPQ(KFL)=XPVMD(KFL)+XPANL(KFL)+XPBEH(KFL)+XPDIR(KFL)
+ XPVAL(KFL)=VXPVMD(KFL)+VXPANL(KFL)+XPBEH(KFL)+XPDIR(KFL)
+ 150 CONTINUE
+ VINT(231)=P2MX
+ ELSEIF(MSTP(56).EQ.2) THEN
+C...Call PDFLIB parton distributions.
+ PARM(1)='NPTYPE'
+ VALUE(1)=3
+ PARM(2)='NGROUP'
+ VALUE(2)=MSTP(55)/1000
+ PARM(3)='NSET'
+ VALUE(3)=MOD(MSTP(55),1000)
+ IF(MINT(93).NE.3000000+MSTP(55)) THEN
+ CALL PDFSET(PARM,VALUE)
+ MINT(93)=3000000+MSTP(55)
+ ENDIF
+ XX=X
+ QQ2=MAX(0D0,Q2MIN,Q2)
+ IF(MSTP(57).EQ.0) QQ2=Q2MIN
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ IP2=MSTP(60)
+ IF(MSTP(55).EQ.5004) THEN
+ IF(5D0*P2.LT.QQ2.AND.
+ & QQ2.GT.0.6D0.AND.QQ2.LT.5D4.AND.
+ & P2.GE.0D0.AND.P2.LT.10D0.AND.
+ & XX.GT.1D-4.AND.XX.LT.1D0) THEN
+ CALL STRUCTP(XX,QQ2,P2,IP2,UPV,DNV,USEA,DSEA,STR,CHM,
+ & BOT,TOP,GLU)
+ ELSE
+ UPV=0D0
+ DNV=0D0
+ USEA=0D0
+ DSEA=0D0
+ STR=0D0
+ CHM=0D0
+ BOT=0D0
+ TOP=0D0
+ GLU=0D0
+ ENDIF
+ ELSE
+ IF(P2.LT.QQ2) THEN
+ CALL STRUCTP(XX,QQ2,P2,IP2,UPV,DNV,USEA,DSEA,STR,CHM,
+ & BOT,TOP,GLU)
+ ELSE
+ UPV=0D0
+ DNV=0D0
+ USEA=0D0
+ DSEA=0D0
+ STR=0D0
+ CHM=0D0
+ BOT=0D0
+ TOP=0D0
+ GLU=0D0
+ ENDIF
+ ENDIF
+ VINT(231)=Q2MIN
+ XPQ(0)=GLU
+ XPQ(1)=DNV
+ XPQ(-1)=DNV
+ XPQ(2)=UPV
+ XPQ(-2)=UPV
+ XPQ(3)=STR
+ XPQ(-3)=STR
+ XPQ(4)=CHM
+ XPQ(-4)=CHM
+ XPQ(5)=BOT
+ XPQ(-5)=BOT
+ XPQ(6)=TOP
+ XPQ(-6)=TOP
+ XPVU=4D0*(XPQ(2)-XPQ(1))/3D0
+ XPVAL(1)=XPVU/4D0
+ XPVAL(2)=XPVU
+ XPVAL(3)=MIN(XPQ(3),XPVU/4D0)
+ XPVAL(4)=MIN(XPQ(4),XPVU)
+ XPVAL(5)=MIN(XPQ(5),XPVU/4D0)
+ XPVAL(-1)=XPVAL(1)
+ XPVAL(-2)=XPVAL(2)
+ XPVAL(-3)=XPVAL(3)
+ XPVAL(-4)=XPVAL(4)
+ XPVAL(-5)=XPVAL(5)
+ ELSE
+ WRITE(MSTU(11),5200) KF,MSTP(56),MSTP(55)
+ ENDIF
+
+C...Pion/gammaVDM parton distribution call.
+ ELSEIF(KFA.EQ.211.OR.KFA.EQ.111.OR.KFA.EQ.321.OR.KFA.EQ.130.OR.
+ &KFA.EQ.310.OR.(KFA.EQ.22.AND.MINT(109).EQ.2)) THEN
+ IF(KFA.EQ.22.AND.MSTP(56).EQ.1.AND.MSTP(55).GE.5.AND.
+ & MSTP(55).LE.12) THEN
+ ISET=1+MOD(MSTP(55)-1,4)
+ Q2MX=Q2
+ P2MX=0.36D0
+ IF(ISET.GE.3) P2MX=4.0D0
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ CALL PYGGAM(ISET,X,Q2MX,P2,MSTP(60),F2GAM,XPGA)
+ DO 160 KFL=-6,6
+ XPQ(KFL)=XPVMD(KFL)
+ XPVAL(KFL)=VXPVMD(KFL)
+ 160 CONTINUE
+ VINT(231)=P2MX
+ ELSEIF(MSTP(54).EQ.1.AND.MSTP(53).GE.1.AND.MSTP(53).LE.3) THEN
+ CALL PYPDPI(X,Q2,XPPI)
+ DO 170 KFL=-6,6
+ XPQ(KFL)=XPPI(KFL)
+ 170 CONTINUE
+ XPVAL(2)=XPQ(2)-XPQ(-2)
+ XPVAL(-1)=XPQ(-1)-XPQ(1)
+ ELSEIF(MSTP(54).EQ.2) THEN
+C...Call PDFLIB parton distributions.
+ PARM(1)='NPTYPE'
+ VALUE(1)=2
+ PARM(2)='NGROUP'
+ VALUE(2)=MSTP(53)/1000
+ PARM(3)='NSET'
+ VALUE(3)=MOD(MSTP(53),1000)
+ IF(MINT(93).NE.2000000+MSTP(53)) THEN
+ CALL PDFSET(PARM,VALUE)
+ MINT(93)=2000000+MSTP(53)
+ ENDIF
+ XX=X
+ QQ=SQRT(MAX(0D0,Q2MIN,Q2))
+ IF(MSTP(57).EQ.0) QQ=SQRT(Q2MIN)
+ CALL STRUCTM(XX,QQ,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GLU)
+ VINT(231)=Q2MIN
+ XPQ(0)=GLU
+ XPQ(1)=DSEA
+ XPQ(-1)=UPV+DSEA
+ XPQ(2)=UPV+USEA
+ XPQ(-2)=USEA
+ XPQ(3)=STR
+ XPQ(-3)=STR
+ XPQ(4)=CHM
+ XPQ(-4)=CHM
+ XPQ(5)=BOT
+ XPQ(-5)=BOT
+ XPQ(6)=TOP
+ XPQ(-6)=TOP
+ XPVAL(2)=UPV
+ XPVAL(-1)=UPV
+ ELSE
+ WRITE(MSTU(11),5200) KF,MSTP(54),MSTP(53)
+ ENDIF
+
+C...Anomalous photon parton distribution call.
+ ELSEIF(KFA.EQ.22.AND.MINT(109).EQ.3) THEN
+ Q2MX=Q2
+ P2MX=PARP(15)**2
+ IF(MSTP(56).EQ.1.AND.MSTP(55).LE.8) THEN
+ IF(MSTP(55).EQ.5.OR.MSTP(55).EQ.6) P2MX=0.36D0
+ IF(MSTP(55).EQ.7.OR.MSTP(55).EQ.8) P2MX=4.0D0
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ CALL PYGGAM(MSTP(55)-4,X,Q2MX,P2,MSTP(60),F2GM,XPGA)
+ DO 180 KFL=-6,6
+ XPQ(KFL)=XPANL(KFL)+XPANH(KFL)
+ XPVAL(KFL)=VXPANL(KFL)+VXPANH(KFL)
+ 180 CONTINUE
+ VINT(231)=P2MX
+ ELSEIF(MSTP(56).EQ.1) THEN
+ IF(MSTP(55).EQ.9.OR.MSTP(55).EQ.10) P2MX=0.36D0
+ IF(MSTP(55).EQ.11.OR.MSTP(55).EQ.12) P2MX=4.0D0
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ CALL PYGGAM(MSTP(55)-8,X,Q2MX,P2,MSTP(60),F2GM,XPGA)
+ DO 190 KFL=-6,6
+ XPQ(KFL)=MAX(0D0,XPANL(KFL)+XPBEH(KFL)+XPDIR(KFL))
+ XPVAL(KFL)=MAX(0D0,VXPANL(KFL)+XPBEH(KFL)+XPDIR(KFL))
+ 190 CONTINUE
+ VINT(231)=P2MX
+ ELSEIF(MSTP(56).EQ.2) THEN
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ CALL PYGANO(0,X,Q2MX,P2MX,ALAMGA,XPGA,VXPGA)
+ DO 200 KFL=-6,6
+ XPQ(KFL)=XPGA(KFL)
+ XPVAL(KFL)=VXPGA(KFL)
+ 200 CONTINUE
+ VINT(231)=P2MX
+ ELSEIF(MSTP(55).GE.1.AND.MSTP(55).LE.5) THEN
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ CALL PYGVMD(0,MSTP(55),X,Q2MX,P2MX,PARP(1),XPGA,VXPGA)
+ DO 210 KFL=-6,6
+ XPQ(KFL)=XPGA(KFL)
+ XPVAL(KFL)=VXPGA(KFL)
+ 210 CONTINUE
+ VINT(231)=P2MX
+ ELSE
+ 220 RKF=11D0*PYR(0)
+ KFR=1
+ IF(RKF.GT.1D0) KFR=2
+ IF(RKF.GT.5D0) KFR=3
+ IF(RKF.GT.6D0) KFR=4
+ IF(RKF.GT.10D0) KFR=5
+ IF(KFR.EQ.4.AND.Q2.LT.PMCGA**2) GOTO 220
+ IF(KFR.EQ.5.AND.Q2.LT.PMBGA**2) GOTO 220
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ CALL PYGVMD(0,KFR,X,Q2MX,P2MX,PARP(1),XPGA,VXPGA)
+ DO 230 KFL=-6,6
+ XPQ(KFL)=XPGA(KFL)
+ XPVAL(KFL)=VXPGA(KFL)
+ 230 CONTINUE
+ VINT(231)=P2MX
+ ENDIF
+
+C...Proton parton distribution call.
+ ELSE
+ IF(MSTP(52).EQ.1.AND.MSTP(51).GE.1.AND.MSTP(51).LE.20) THEN
+ CALL PYPDPR(X,Q2,XPPR)
+ DO 240 KFL=-6,6
+ XPQ(KFL)=XPPR(KFL)
+ 240 CONTINUE
+ XPVAL(1)=XPQ(1)-XPQ(-1)
+ XPVAL(2)=XPQ(2)-XPQ(-2)
+ ELSEIF(MSTP(52).EQ.2) THEN
+C...Call PDFLIB parton distributions.
+ PARM(1)='NPTYPE'
+ VALUE(1)=1
+ PARM(2)='NGROUP'
+ VALUE(2)=MSTP(51)/1000
+ PARM(3)='NSET'
+ VALUE(3)=MOD(MSTP(51),1000)
+ IF(MINT(93).NE.1000000+MSTP(51)) THEN
+ CALL PDFSET(PARM,VALUE)
+ MINT(93)=1000000+MSTP(51)
+ ENDIF
+ XX=X
+ QQ=SQRT(MAX(0D0,Q2MIN,Q2))
+ IF(MSTP(57).EQ.0) QQ=SQRT(Q2MIN)
+ CALL STRUCTM_ALICE
+ + (XX,QQ,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GLU)
+ VINT(231)=Q2MIN
+ XPQ(0)=GLU
+ XPQ(1)=DNV+DSEA
+ XPQ(-1)=DSEA
+ XPQ(2)=UPV+USEA
+ XPQ(-2)=USEA
+ XPQ(3)=STR
+ XPQ(-3)=STR
+ XPQ(4)=CHM
+ XPQ(-4)=CHM
+ XPQ(5)=BOT
+ XPQ(-5)=BOT
+ XPQ(6)=TOP
+ XPQ(-6)=TOP
+ XPVAL(1)=DNV
+ XPVAL(2)=UPV
+ ELSE
+ WRITE(MSTU(11),5200) KF,MSTP(52),MSTP(51)
+ ENDIF
+ ENDIF
+
+C...Isospin average for pi0/gammaVDM.
+ IF(KFA.EQ.111.OR.(KFA.EQ.22.AND.MINT(109).EQ.2)) THEN
+ IF(KFA.EQ.22.AND.MSTP(55).GE.5.AND.MSTP(55).LE.12) THEN
+ XPV=XPQ(2)-XPQ(1)
+ XPQ(2)=XPQ(1)
+ XPQ(-2)=XPQ(-1)
+ ELSE
+ XPS=0.5D0*(XPQ(1)+XPQ(-2))
+ XPV=0.5D0*(XPQ(2)+XPQ(-1))-XPS
+ XPQ(2)=XPS
+ XPQ(-1)=XPS
+ ENDIF
+ XPVL=0.5D0*(XPVAL(1)+XPVAL(2)+XPVAL(-1)+XPVAL(-2))+
+ & XPVAL(3)+XPVAL(4)+XPVAL(5)
+ DO 250 KFL=-6,6
+ XPVAL(KFL)=0D0
+ 250 CONTINUE
+ IF(KFA.EQ.22.AND.MINT(105).LE.223) THEN
+ XPQ(1)=XPQ(1)+0.2D0*XPV
+ XPQ(2)=XPQ(2)+0.8D0*XPV
+ XPVAL(1)=0.2D0*XPVL
+ XPVAL(2)=0.8D0*XPVL
+ ELSEIF(KFA.EQ.22.AND.MINT(105).EQ.333) THEN
+ XPQ(3)=XPQ(3)+XPV
+ XPVAL(3)=XPVL
+ ELSEIF(KFA.EQ.22.AND.MINT(105).EQ.443) THEN
+ XPQ(4)=XPQ(4)+XPV
+ XPVAL(4)=XPVL
+ IF(MSTP(55).GE.9) THEN
+ DO 260 KFL=-6,6
+ XPQ(KFL)=0D0
+ 260 CONTINUE
+ ENDIF
+ ELSE
+ XPQ(1)=XPQ(1)+0.5D0*XPV
+ XPQ(2)=XPQ(2)+0.5D0*XPV
+ XPVAL(1)=0.5D0*XPVL
+ XPVAL(2)=0.5D0*XPVL
+ ENDIF
+ DO 270 KFL=1,6
+ XPQ(-KFL)=XPQ(KFL)
+ XPVAL(-KFL)=XPVAL(KFL)
+ 270 CONTINUE
+
+C...Rescale for gammaVDM by effective gamma -> rho coupling.
+C+++Do not rescale?
+ IF(KFA.EQ.22.AND.MINT(109).EQ.2.AND..NOT.(MSTP(56).EQ.1
+ & .AND.MSTP(55).GE.5.AND.MSTP(55).LE.12)) THEN
+ DO 280 KFL=-6,6
+ XPQ(KFL)=VINT(281)*XPQ(KFL)
+ XPVAL(KFL)=VINT(281)*XPVAL(KFL)
+ 280 CONTINUE
+ VINT(232)=VINT(281)*XPV
+ ENDIF
+
+C...Simple recipes for kaons.
+ ELSEIF(KFA.EQ.321) THEN
+ XPQ(-3)=XPQ(-3)+XPQ(-1)-XPQ(1)
+ XPQ(-1)=XPQ(1)
+ XPVAL(-3)=XPVAL(-1)
+ XPVAL(-1)=0D0
+ ELSEIF(KFA.EQ.130.OR.KFA.EQ.310) THEN
+ XPS=0.5D0*(XPQ(1)+XPQ(-2))
+ XPV=0.5D0*(XPQ(2)+XPQ(-1))-XPS
+ XPQ(2)=XPS
+ XPQ(-1)=XPS
+ XPQ(1)=XPQ(1)+0.5D0*XPV
+ XPQ(-1)=XPQ(-1)+0.5D0*XPV
+ XPQ(3)=XPQ(3)+0.5D0*XPV
+ XPQ(-3)=XPQ(-3)+0.5D0*XPV
+ XPV=0.5D0*(XPVAL(2)+XPVAL(-1))
+ XPVAL(2)=0D0
+ XPVAL(-1)=0D0
+ XPVAL(1)=0.5D0*XPV
+ XPVAL(-1)=0.5D0*XPV
+ XPVAL(3)=0.5D0*XPV
+ XPVAL(-3)=0.5D0*XPV
+
+C...Isospin conjugation for neutron.
+ ELSEIF(KFA.EQ.2112) THEN
+ XPSV=XPQ(1)
+ XPQ(1)=XPQ(2)
+ XPQ(2)=XPSV
+ XPSV=XPQ(-1)
+ XPQ(-1)=XPQ(-2)
+ XPQ(-2)=XPSV
+ XPSV=XPVAL(1)
+ XPVAL(1)=XPVAL(2)
+ XPVAL(2)=XPSV
+
+C...Simple recipes for hyperon (average valence parton distribution).
+ ELSEIF(KFA.EQ.3122.OR.KFA.EQ.3112.OR.KFA.EQ.3212.OR.KFA.EQ.3222
+ & .OR.KFA.EQ.3312.OR.KFA.EQ.3322.OR.KFA.EQ.3334) THEN
+ XPV=(XPQ(1)+XPQ(2)-XPQ(-1)-XPQ(-2))/3D0
+ XPS=0.5D0*(XPQ(-1)+XPQ(-2))
+ XPQ(1)=XPS
+ XPQ(2)=XPS
+ XPQ(-1)=XPS
+ XPQ(-2)=XPS
+ XPQ(KFA/1000)=XPQ(KFA/1000)+XPV
+ XPQ(MOD(KFA/100,10))=XPQ(MOD(KFA/100,10))+XPV
+ XPQ(MOD(KFA/10,10))=XPQ(MOD(KFA/10,10))+XPV
+ XPV=(XPVAL(1)+XPVAL(2))/3D0
+ XPVAL(1)=0D0
+ XPVAL(2)=0D0
+ XPVAL(KFA/1000)=XPVAL(KFA/1000)+XPV
+ XPVAL(MOD(KFA/100,10))=XPVAL(MOD(KFA/100,10))+XPV
+ XPVAL(MOD(KFA/10,10))=XPVAL(MOD(KFA/10,10))+XPV
+ ENDIF
+
+C...Charge conjugation for antiparticle.
+ IF(KF.LT.0) THEN
+ DO 290 KFL=1,25
+ IF(KFL.EQ.21.OR.KFL.EQ.22.OR.KFL.EQ.23.OR.KFL.EQ.25) GOTO 290
+ XPSV=XPQ(KFL)
+ XPQ(KFL)=XPQ(-KFL)
+ XPQ(-KFL)=XPSV
+ 290 CONTINUE
+ DO 300 KFL=1,6
+ XPSV=XPVAL(KFL)
+ XPVAL(KFL)=XPVAL(-KFL)
+ XPVAL(-KFL)=XPSV
+ 300 CONTINUE
+ ENDIF
+
+C...MULTIPLE INTERACTIONS - PDF RESHAPING.
+C...Set side.
+ JS=MINT(30)
+C...Only reshape PDFs for the non-first interactions;
+C...But need valence/sea separation already from first interaction.
+ IF ((JS.EQ.1.OR.JS.EQ.2).AND.MINT(35).GE.2) THEN
+ KFVSEL=KFIVAL(JS,1)
+C...If valence quark kicked out of pi0 or gamma then that decides
+C...whether we should consider state as d dbar, u ubar, s sbar, etc.
+ IF(KFVSEL.NE.0.AND.(KFA.EQ.111.OR.KFA.EQ.22)) THEN
+ XPVL=0D0
+ DO 310 KFL=1,6
+ XPVL=XPVL+XPVAL(KFL)
+ XPQ(KFL)=MAX(0D0,XPQ(KFL)-XPVAL(KFL))
+ XPVAL(KFL)=0D0
+ 310 CONTINUE
+ XPQ(IABS(KFVSEL))=XPQ(IABS(KFVSEL))+XPVL
+ XPVAL(IABS(KFVSEL))=XPVL
+ DO 320 KFL=1,6
+ XPQ(-KFL)=XPQ(KFL)
+ XPVAL(-KFL)=XPVAL(KFL)
+ 320 CONTINUE
+
+C...If valence quark kicked out of K0S or K0S then that decides whether
+C...we should consider state as d sbar or s dbar.
+ ELSEIF(KFVSEL.NE.0.AND.(KFA.EQ.130.OR.KFA.EQ.310)) THEN
+ KFS=1
+ IF(KFVSEL.EQ.-1.OR.KFVSEL.EQ.3) KFS=-1
+ XPQ(KFS)=XPQ(KFS)+XPVAL(-KFS)
+ XPVAL(KFS)=XPVAL(KFS)+XPVAL(-KFS)
+ XPQ(-KFS)=MAX(0D0,XPQ(-KFS)-XPVAL(-KFS))
+ XPVAL(-KFS)=0D0
+ KFS=-3*KFS
+ XPQ(KFS)=XPQ(KFS)+XPVAL(-KFS)
+ XPVAL(KFS)=XPVAL(KFS)+XPVAL(-KFS)
+ XPQ(-KFS)=MAX(0D0,XPQ(-KFS)-XPVAL(-KFS))
+ XPVAL(-KFS)=0D0
+ ENDIF
+
+C...XPQ distributions are nominal for a (signed) beam particle
+C...of KF type, with 1-Sum(x_prev) rescaled to 1.
+ CMPFAC=1D0
+ NRESC=0
+ 345 NRESC=NRESC+1
+ PVCTOT(JS,-1)=0D0
+ PVCTOT(JS, 0)=0D0
+ PVCTOT(JS, 1)=0D0
+ DO 350 IFL=-6,6
+ IF(IFL.EQ.0) GOTO 350
+
+C...Count up number of original IFL valence quarks.
+ IVORG=0
+ IF(KFIVAL(JS,1).EQ.IFL) IVORG=IVORG+1
+ IF(KFIVAL(JS,2).EQ.IFL) IVORG=IVORG+1
+ IF(KFIVAL(JS,3).EQ.IFL) IVORG=IVORG+1
+C...For pi0/gamma/K0S/K0L without valence flavour decided yet, here
+C...bookkeep as if d dbar (for total momentum sum in valence sector).
+ IF(KFIVAL(JS,1).EQ.0.AND.IABS(IFL).EQ.1) IVORG=1
+C...Count down number of remaining IFL valence quarks. Skip current
+C...interaction initiator.
+ IVREM=IVORG
+ DO 330 I1=1,NMI(JS)
+ IF (I1.EQ.MINT(36)) GOTO 330
+ IF (K(IMI(JS,I1,1),2).EQ.IFL.AND.IMI(JS,I1,2).EQ.0)
+ & IVREM=IVREM-1
+ 330 CONTINUE
+
+C...Separate out original VALENCE and SEA content.
+ VAL=XPVAL(IFL)
+ SEA=MAX(0D0,XPQ(IFL)-VAL)
+ XPSVC(IFL,0)=VAL
+ XPSVC(IFL,-1)=SEA
+
+C...Rescale valence content if changed.
+ IF (IVORG.NE.0.AND.IVREM.NE.IVORG) XPSVC(IFL,0)=
+ & (VAL*IVREM)/IVORG
+
+C...Momentum integrals of original and removed valence quarks.
+ IF(IVORG.NE.0) THEN
+C...For p/n/pbar/nbar beams can split into d_val and u_val.
+C...Isospin conjugation for neutrons
+ IF(KFA.EQ.2212.OR.KFA.EQ.2112) THEN
+ IAFLP=IABS(IFL)
+ IF (KFA.EQ.2112) IAFLP=3-IAFLP
+ VPAVG=PAVG(IAFLP,Q2)
+C...For other baryons average d_val and u_val, like for PDFs.
+ ELSEIF(KFA.GT.1000) THEN
+ VPAVG=(PAVG(1,Q2)+2D0*PAVG(2,Q2))/3D0
+C...For mesons and photon average d_val and u_val and scale by 3/2.
+C...Very crude, especially for photon.
+ ELSE
+ VPAVG=0.5D0*(PAVG(1,Q2)+2D0*PAVG(2,Q2))
+ ENDIF
+ PVCTOT(JS,-1)=PVCTOT(JS,-1)+IVORG*VPAVG
+ PVCTOT(JS, 0)=PVCTOT(JS, 0)+(IVORG-IVREM)*VPAVG
+ ENDIF
+
+C...Now add companions (at X with partner having been at Z=XASSOC).
+C...NOTE: due to the assumed simple x scaling, the partner was at what
+C...corresponds to a higher Z than XASSOC, if there were intermediate
+C...scatterings. Nothing done about that for the moment.
+ DO 340 IVC=1,NVC(JS,IFL)
+C...Skip companions that have been kicked out
+ IF (XASSOC(JS,IFL,IVC).LE.0D0) THEN
+ XPSVC(IFL,IVC)=0D0
+ GOTO 340
+ ELSE
+C...Momentum fraction of the partner quark.
+C...Use rescaled YS = XS/(1-Sum_rest) where X and XS are not in "rest".
+ XS=XASSOC(JS,IFL,IVC)
+ XREM=VINT(142+JS)
+ YS=XS/(XREM+XS)
+C...Momentum fraction of the companion quark.
+C...Rescale from X = x/XREM to Y = x/(1-Sum_rest) -> factor (1-YS).
+ Y=X*(1D0-YS)
+ XPSVC(IFL,IVC)=PYFCMP(Y/CMPFAC,YS/CMPFAC,MSTP(87))
+C...Add to momentum sum, with rescaling compensation factor.
+ XCFAC=(XREM+XS)/XREM*CMPFAC
+ PVCTOT(JS,1)=PVCTOT(JS,1)+XCFAC*PYPCMP(YS/CMPFAC,MSTP(87))
+ ENDIF
+ 340 CONTINUE
+ 350 CONTINUE
+
+C...Wait until all flavours treated, then rescale seas and gluon.
+ XPSVC(0,-1)=XPQ(0)
+ XPSVC(0,0)=0D0
+ RSFAC=1D0+(PVCTOT(JS,0)-PVCTOT(JS,1))/(1D0-PVCTOT(JS,-1))
+ IF (RSFAC.LE.0D0) THEN
+C...First calculate factor needed to exactly restore pz cons.
+ IF (NRESC.EQ.1) CMPFAC =
+ & (1D0-(PVCTOT(JS,-1)-PVCTOT(JS,0)))/PVCTOT(JS,1)
+C...Add a bit of headroom
+ CMPFAC=0.99*CMPFAC
+C...Try a few times if more headroom is needed, then print error message.
+ IF (NRESC.LE.10) GOTO 345
+ CALL PYERRM(15,
+ & '(PYPDFU:) Negative reshaping factor persists!')
+ WRITE(MSTU(11),5300) (PVCTOT(JS,ITMP),ITMP=-1,1), RSFAC
+ RSFAC=0D0
+ ENDIF
+ DO 370 IFL=-6,6
+ XPSVC(IFL,-1)=RSFAC*XPSVC(IFL,-1)
+C...Also store resulting distributions in XPQ
+ XPQ(IFL)=0D0
+ DO 360 ISVC=-1,NVC(JS,IFL)
+ XPQ(IFL)=XPQ(IFL)+XPSVC(IFL,ISVC)
+ 360 CONTINUE
+ 370 CONTINUE
+C...Save companion reweighting factor for PYPTIS.
+ VINT(140)=CMPFAC
+ ENDIF
+
+
+C...Allow gluon also in position 21.
+ XPQ(21)=XPQ(0)
+
+C...Check positivity and reset above maximum allowed flavour.
+ DO 380 KFL=-25,25
+ XPQ(KFL)=MAX(0D0,XPQ(KFL))
+ IF(IABS(KFL).GT.MSTP(58).AND.IABS(KFL).LE.8) XPQ(KFL)=0D0
+ 380 CONTINUE
+
+C...Formats for error printouts.
+ 5000 FORMAT(' Error: x value outside physical range; x =',1P,D12.3)
+ 5100 FORMAT(' Error: illegal particle code for parton distribution;',
+ &' KF =',I5)
+ 5200 FORMAT(' Error: unknown parton distribution; KF, library, set =',
+ &3I5)
+ 5300 FORMAT(' Original valence momentum fraction : ',F6.3/
+ & ' Removed valence momentum fraction : ',F6.3/
+ & ' Added companion momentum fraction : ',F6.3/
+ & ' Resulting rescale factor : ',F6.3)
+
+C...Reset side pointer and return
+ 9999 MINT(30)=0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPDFL
+C...Gives proton parton distribution at small x and/or Q^2 according to
+C...correct limiting behaviour.
+
+ SUBROUTINE PYPDFL(KF,X,Q2,XPQ)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION XPQ(-25:25),XPA(-25:25),XPB(-25:25),WTSB(-3:3)
+ DATA RMR/0.92D0/,RMP/0.38D0/,WTSB/0.5D0,1D0,1D0,5D0,1D0,1D0,0.5D0/
+
+C...Send everything but protons/neutrons/VMD pions directly to PYPDFU.
+ MINT(92)=0
+ KFA=IABS(KF)
+ IACC=0
+ IF((KFA.EQ.2212.OR.KFA.EQ.2112).AND.MSTP(57).GE.2) IACC=1
+ IF(KFA.EQ.211.AND.MSTP(57).GE.3) IACC=1
+ IF(KFA.EQ.22.AND.MINT(109).EQ.2.AND.MSTP(57).GE.3) IACC=1
+ IF(IACC.EQ.0) THEN
+ CALL PYPDFU(KF,X,Q2,XPQ)
+ RETURN
+ ENDIF
+
+C...Reset. Check x.
+ DO 100 KFL=-25,25
+ XPQ(KFL)=0D0
+ 100 CONTINUE
+ IF(X.LE.0D0.OR.X.GE.1D0) THEN
+ WRITE(MSTU(11),5000) X
+ RETURN
+ ENDIF
+
+C...Define valence content.
+ KFC=KF
+ NV1=2
+ NV2=1
+ IF(KF.EQ.2212) THEN
+ KFV1=2
+ KFV2=1
+ ELSEIF(KF.EQ.-2212) THEN
+ KFV1=-2
+ KFV2=-1
+ ELSEIF(KF.EQ.2112) THEN
+ KFV1=1
+ KFV2=2
+ ELSEIF(KF.EQ.-2112) THEN
+ KFV1=-1
+ KFV2=-2
+ ELSEIF(KF.EQ.211) THEN
+ NV1=1
+ KFV1=2
+ KFV2=-1
+ ELSEIF(KF.EQ.-211) THEN
+ NV1=1
+ KFV1=-2
+ KFV2=1
+ ELSEIF(MINT(105).LE.223) THEN
+ KFV1=1
+ WTV1=0.2D0
+ KFV2=2
+ WTV2=0.8D0
+ ELSEIF(MINT(105).EQ.333) THEN
+ KFV1=3
+ WTV1=1.0D0
+ KFV2=1
+ WTV2=0.0D0
+ ELSEIF(MINT(105).EQ.443) THEN
+ KFV1=4
+ WTV1=1.0D0
+ KFV2=1
+ WTV2=0.0D0
+ ENDIF
+
+C...Do naive evaluation and find min Q^2, boundary Q^2 and x_0.
+ MINT30=MINT(30)
+ CALL PYPDFU(KFC,X,Q2,XPA)
+ Q2MN=MAX(3D0,VINT(231))
+ Q2B=2D0+0.052D0**2*EXP(3.56D0*SQRT(MAX(0D0,-LOG(3D0*X))))
+ XMN=EXP(-(LOG((Q2MN-2D0)/0.052D0**2)/3.56D0)**2)/3D0
+
+C...Large Q2 and large x: naive call is enough.
+ IF(Q2.GT.Q2MN.AND.Q2.GT.Q2B) THEN
+ DO 110 KFL=-25,25
+ XPQ(KFL)=XPA(KFL)
+ 110 CONTINUE
+ MINT(92)=1
+
+C...Small Q2 and large x: dampen boundary value.
+ ELSEIF(X.GT.XMN) THEN
+
+C...Evaluate at boundary and define dampening factors.
+ MINT(30)=MINT30
+ CALL PYPDFU(KFC,X,Q2MN,XPA)
+ FV=(Q2*(Q2MN+RMR)/(Q2MN*(Q2+RMR)))**(0.55D0*(1D0-X)/(1D0-XMN))
+ FS=(Q2*(Q2MN+RMP)/(Q2MN*(Q2+RMP)))**1.08D0
+
+C...Separate valence and sea parts of parton distribution.
+ IF(KFA.NE.22) THEN
+ XFV1=XPA(KFV1)-XPA(-KFV1)
+ XPA(KFV1)=XPA(-KFV1)
+ XFV2=XPA(KFV2)-XPA(-KFV2)
+ XPA(KFV2)=XPA(-KFV2)
+ ELSE
+ XPA(KFV1)=XPA(KFV1)-WTV1*VINT(232)
+ XPA(-KFV1)=XPA(-KFV1)-WTV1*VINT(232)
+ XPA(KFV2)=XPA(KFV2)-WTV2*VINT(232)
+ XPA(-KFV2)=XPA(-KFV2)-WTV2*VINT(232)
+ ENDIF
+
+C...Dampen valence and sea separately. Put back together.
+ DO 120 KFL=-25,25
+ XPQ(KFL)=FS*XPA(KFL)
+ 120 CONTINUE
+ IF(KFA.NE.22) THEN
+ XPQ(KFV1)=XPQ(KFV1)+FV*XFV1
+ XPQ(KFV2)=XPQ(KFV2)+FV*XFV2
+ ELSE
+ XPQ(KFV1)=XPQ(KFV1)+FV*WTV1*VINT(232)
+ XPQ(-KFV1)=XPQ(-KFV1)+FV*WTV1*VINT(232)
+ XPQ(KFV2)=XPQ(KFV2)+FV*WTV2*VINT(232)
+ XPQ(-KFV2)=XPQ(-KFV2)+FV*WTV2*VINT(232)
+ ENDIF
+ MINT(92)=2
+
+C...Large Q2 and small x: interpolate behaviour.
+ ELSEIF(Q2.GT.Q2MN) THEN
+
+C...Evaluate at extremes and define coefficients for interpolation.
+ MINT(30)=MINT30
+ CALL PYPDFU(KFC,XMN,Q2MN,XPA)
+ VI232A=VINT(232)
+ MINT(30)=MINT30
+ CALL PYPDFU(KFC,X,Q2B,XPB)
+ VI232B=VINT(232)
+ FLA=LOG(Q2B/Q2)/LOG(Q2B/Q2MN)
+ FVA=(X/XMN)**0.45D0*FLA
+ FSA=(X/XMN)**(-0.08D0)*FLA
+ FB=1D0-FLA
+
+C...Separate valence and sea parts of parton distribution.
+ IF(KFA.NE.22) THEN
+ XFVA1=XPA(KFV1)-XPA(-KFV1)
+ XPA(KFV1)=XPA(-KFV1)
+ XFVA2=XPA(KFV2)-XPA(-KFV2)
+ XPA(KFV2)=XPA(-KFV2)
+ XFVB1=XPB(KFV1)-XPB(-KFV1)
+ XPB(KFV1)=XPB(-KFV1)
+ XFVB2=XPB(KFV2)-XPB(-KFV2)
+ XPB(KFV2)=XPB(-KFV2)
+ ELSE
+ XPA(KFV1)=XPA(KFV1)-WTV1*VI232A
+ XPA(-KFV1)=XPA(-KFV1)-WTV1*VI232A
+ XPA(KFV2)=XPA(KFV2)-WTV2*VI232A
+ XPA(-KFV2)=XPA(-KFV2)-WTV2*VI232A
+ XPB(KFV1)=XPB(KFV1)-WTV1*VI232B
+ XPB(-KFV1)=XPB(-KFV1)-WTV1*VI232B
+ XPB(KFV2)=XPB(KFV2)-WTV2*VI232B
+ XPB(-KFV2)=XPB(-KFV2)-WTV2*VI232B
+ ENDIF
+
+C...Interpolate for valence and sea. Put back together.
+ DO 130 KFL=-25,25
+ XPQ(KFL)=FSA*XPA(KFL)+FB*XPB(KFL)
+ 130 CONTINUE
+ IF(KFA.NE.22) THEN
+ XPQ(KFV1)=XPQ(KFV1)+(FVA*XFVA1+FB*XFVB1)
+ XPQ(KFV2)=XPQ(KFV2)+(FVA*XFVA2+FB*XFVB2)
+ ELSE
+ XPQ(KFV1)=XPQ(KFV1)+WTV1*(FVA*VI232A+FB*VI232B)
+ XPQ(-KFV1)=XPQ(-KFV1)+WTV1*(FVA*VI232A+FB*VI232B)
+ XPQ(KFV2)=XPQ(KFV2)+WTV2*(FVA*VI232A+FB*VI232B)
+ XPQ(-KFV2)=XPQ(-KFV2)+WTV2*(FVA*VI232A+FB*VI232B)
+ ENDIF
+ MINT(92)=3
+
+C...Small Q2 and small x: dampen boundary value and add term.
+ ELSE
+
+C...Evaluate at boundary and define dampening factors.
+ MINT(30)=MINT30
+ CALL PYPDFU(KFC,XMN,Q2MN,XPA)
+ FB=(XMN-X)*(Q2MN-Q2)/(XMN*Q2MN)
+ FA=1D0-FB
+ FVC=(X/XMN)**0.45D0*(Q2/(Q2+RMR))**0.55D0
+ FVA=FVC*FA*((Q2MN+RMR)/Q2MN)**0.55D0
+ FVB=FVC*FB*1.10D0*XMN**0.45D0*0.11D0
+ FSC=(X/XMN)**(-0.08D0)*(Q2/(Q2+RMP))**1.08D0
+ FSA=FSC*FA*((Q2MN+RMP)/Q2MN)**1.08D0
+ FSB=FSC*FB*0.21D0*XMN**(-0.08D0)*0.21D0
+
+C...Separate valence and sea parts of parton distribution.
+ IF(KFA.NE.22) THEN
+ XFV1=XPA(KFV1)-XPA(-KFV1)
+ XPA(KFV1)=XPA(-KFV1)
+ XFV2=XPA(KFV2)-XPA(-KFV2)
+ XPA(KFV2)=XPA(-KFV2)
+ ELSE
+ XPA(KFV1)=XPA(KFV1)-WTV1*VINT(232)
+ XPA(-KFV1)=XPA(-KFV1)-WTV1*VINT(232)
+ XPA(KFV2)=XPA(KFV2)-WTV2*VINT(232)
+ XPA(-KFV2)=XPA(-KFV2)-WTV2*VINT(232)
+ ENDIF
+
+C...Dampen valence and sea separately. Add constant terms.
+C...Put back together.
+ DO 140 KFL=-25,25
+ XPQ(KFL)=FSA*XPA(KFL)
+ 140 CONTINUE
+ IF(KFA.NE.22) THEN
+ DO 150 KFL=-3,3
+ XPQ(KFL)=XPQ(KFL)+FSB*WTSB(KFL)
+ 150 CONTINUE
+ XPQ(KFV1)=XPQ(KFV1)+(FVA*XFV1+FVB*NV1)
+ XPQ(KFV2)=XPQ(KFV2)+(FVA*XFV2+FVB*NV2)
+ ELSE
+ DO 160 KFL=-3,3
+ XPQ(KFL)=XPQ(KFL)+VINT(281)*FSB*WTSB(KFL)
+ 160 CONTINUE
+ XPQ(KFV1)=XPQ(KFV1)+WTV1*(FVA*VINT(232)+FVB*VINT(281))
+ XPQ(-KFV1)=XPQ(-KFV1)+WTV1*(FVA*VINT(232)+FVB*VINT(281))
+ XPQ(KFV2)=XPQ(KFV2)+WTV2*(FVA*VINT(232)+FVB*VINT(281))
+ XPQ(-KFV2)=XPQ(-KFV2)+WTV2*(FVA*VINT(232)+FVB*VINT(281))
+ ENDIF
+ XPQ(21)=XPQ(0)
+ MINT(92)=4
+ ENDIF
+
+C...Format for error printout.
+ 5000 FORMAT(' Error: x value outside physical range; x =',1P,D12.3)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPDEL
+C...Gives electron (or muon, or tau) parton distribution.
+
+ SUBROUTINE PYPDEL(KFA,X,Q2,XPEL)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION XPEL(-25:25),XPGA(-6:6),SXP(0:6)
+
+C...Interface to PDFLIB.
+ COMMON/LW50513/XMIN,XMAX,Q2MIN,Q2MAX
+ SAVE /LW50513/
+ DOUBLE PRECISION XX,QQ,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GLU,
+ &VALUE(20),XMIN,XMAX,Q2MIN,Q2MAX
+ CHARACTER*20 PARM(20)
+ DATA VALUE/20*0D0/,PARM/20*' '/
+
+C...Some common constants.
+ DO 100 KFL=-25,25
+ XPEL(KFL)=0D0
+ 100 CONTINUE
+ AEM=PARU(101)
+ PME=PMAS(11,1)
+ IF(KFA.EQ.13) PME=PMAS(13,1)
+ IF(KFA.EQ.15) PME=PMAS(15,1)
+ XL=LOG(MAX(1D-10,X))
+ X1L=LOG(MAX(1D-10,1D0-X))
+ HLE=LOG(MAX(3D0,Q2/PME**2))
+ HBE2=(AEM/PARU(1))*(HLE-1D0)
+
+C...Electron inside electron, see R. Kleiss et al., in Z physics at
+C...LEP 1, CERN 89-08, p. 34
+ IF(MSTP(59).LE.1) THEN
+ HDE=1D0+(AEM/PARU(1))*(1.5D0*HLE+1.289868D0)+(AEM/PARU(1))**2*
+ & (-2.164868D0*HLE**2+9.840808D0*HLE-10.130464D0)
+ HEE=HBE2*(1D0-X)**(HBE2-1D0)*SQRT(MAX(0D0,HDE))-
+ & 0.5D0*HBE2*(1D0+X)+HBE2**2/8D0*((1D0+X)*(-4D0*X1L+3D0*XL)-
+ & 4D0*XL/(1D0-X)-5D0-X)
+ ELSE
+ HEE=HBE2*(1D0-X)**(HBE2-1D0)*EXP(0.172784D0*HBE2)/
+ & PYGAMM(1D0+HBE2)-0.5D0*HBE2*(1D0+X)+HBE2**2/8D0*((1D0+X)*
+ & (-4D0*X1L+3D0*XL)-4D0*XL/(1D0-X)-5D0-X)
+ ENDIF
+C...Zero distribution for very large x and rescale it for intermediate.
+ IF(X.GT.1D0-1D-10) THEN
+ HEE=0D0
+ ELSEIF(X.GT.1D0-1D-7) THEN
+ HEE=HEE*1000D0**HBE2/(1000D0**HBE2-1D0)
+ ENDIF
+ XPEL(KFA)=X*HEE
+
+C...Photon and (transverse) W- inside electron.
+ AEMP=PYALEM(PME*SQRT(MAX(0D0,Q2)))/PARU(2)
+ IF(MSTP(13).LE.1) THEN
+ HLG=HLE
+ ELSE
+ HLG=LOG(MAX(1D0,(PARP(13)/PME**2)*(1D0-X)/X**2))
+ ENDIF
+ XPEL(22)=AEMP*HLG*(1D0+(1D0-X)**2)
+ HLW=LOG(1D0+Q2/PMAS(24,1)**2)/(4D0*PARU(102))
+ XPEL(-24)=AEMP*HLW*(1D0+(1D0-X)**2)
+
+C...Electron or positron inside photon inside electron.
+ IF(KFA.EQ.11.AND.MSTP(12).EQ.1) THEN
+ XFSEA=0.5D0*(AEMP*(HLE-1D0))**2*(4D0/3D0+X-X**2-4D0*X**3/3D0+
+ & 2D0*X*(1D0+X)*XL)
+ XPEL(11)=XPEL(11)+XFSEA
+ XPEL(-11)=XFSEA
+
+C...Initialize PDFLIB photon parton distributions.
+ IF(MSTP(56).EQ.2) THEN
+ PARM(1)='NPTYPE'
+ VALUE(1)=3
+ PARM(2)='NGROUP'
+ VALUE(2)=MSTP(55)/1000
+ PARM(3)='NSET'
+ VALUE(3)=MOD(MSTP(55),1000)
+ IF(MINT(93).NE.3000000+MSTP(55)) THEN
+ CALL PDFSET(PARM,VALUE)
+ MINT(93)=3000000+MSTP(55)
+ ENDIF
+ ENDIF
+
+C...Quarks and gluons inside photon inside electron:
+C...numerical convolution required.
+ DO 110 KFL=0,6
+ SXP(KFL)=0D0
+ 110 CONTINUE
+ SUMXPP=0D0
+ ITER=-1
+ 120 ITER=ITER+1
+ SUMXP=SUMXPP
+ NSTP=2**(ITER-1)
+ IF(ITER.EQ.0) NSTP=2
+ DO 130 KFL=0,6
+ SXP(KFL)=0.5D0*SXP(KFL)
+ 130 CONTINUE
+ WTSTP=0.5D0/NSTP
+ IF(ITER.EQ.0) WTSTP=0.5D0
+C...Pick grid of x_{gamma} values logarithmically even.
+ DO 150 ISTP=1,NSTP
+ IF(ITER.EQ.0) THEN
+ XLE=XL*(ISTP-1)
+ ELSE
+ XLE=XL*(ISTP-0.5D0)/NSTP
+ ENDIF
+ XE=MIN(1D0-1D-10,EXP(XLE))
+ XG=MIN(1D0-1D-10,X/XE)
+C...Evaluate photon inside electron parton distribution for convolution.
+ XPGP=1D0+(1D0-XE)**2
+ IF(MSTP(13).LE.1) THEN
+ XPGP=XPGP*HLE
+ ELSE
+ XPGP=XPGP*LOG(MAX(1D0,(PARP(13)/PME**2)*(1D0-XE)/XE**2))
+ ENDIF
+C...Evaluate photon parton distributions for convolution.
+ IF(MSTP(56).EQ.1) THEN
+ IF(MSTP(55).EQ.1) THEN
+ CALL PYPDGA(XG,Q2,XPGA)
+ ELSEIF(MSTP(55).GE.5.AND.MSTP(55).LE.8) THEN
+ Q2MX=Q2
+ P2MX=0.36D0
+ IF(MSTP(55).GE.7) P2MX=4.0D0
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ CALL PYGGAM(MSTP(55)-4,XG,Q2MX,P2,MSTP(60),F2GAM,XPGA)
+ VINT(231)=P2MX
+ ELSEIF(MSTP(55).GE.9.AND.MSTP(55).LE.12) THEN
+ Q2MX=Q2
+ P2MX=0.36D0
+ IF(MSTP(55).GE.11) P2MX=4.0D0
+ IF(MSTP(57).EQ.0) Q2MX=P2MX
+ P2=0D0
+ IF(VINT(120).LT.0D0) P2=VINT(120)**2
+ CALL PYGGAM(MSTP(55)-8,XG,Q2MX,P2,MSTP(60),F2GAM,XPGA)
+ VINT(231)=P2MX
+ ENDIF
+ DO 140 KFL=0,5
+ SXP(KFL)=SXP(KFL)+WTSTP*XPGP*XPGA(KFL)
+ 140 CONTINUE
+ ELSEIF(MSTP(56).EQ.2) THEN
+C...Call PDFLIB parton distributions.
+ XX=XG
+ QQ=SQRT(MAX(0D0,Q2MIN,Q2))
+ IF(MSTP(57).EQ.0) QQ=SQRT(Q2MIN)
+ CALL STRUCTM(XX,QQ,UPV,DNV,USEA,DSEA,STR,CHM,BOT,TOP,GLU)
+ SXP(0)=SXP(0)+WTSTP*XPGP*GLU
+ SXP(1)=SXP(1)+WTSTP*XPGP*DNV
+ SXP(2)=SXP(2)+WTSTP*XPGP*UPV
+ SXP(3)=SXP(3)+WTSTP*XPGP*STR
+ SXP(4)=SXP(4)+WTSTP*XPGP*CHM
+ SXP(5)=SXP(5)+WTSTP*XPGP*BOT
+ SXP(6)=SXP(6)+WTSTP*XPGP*TOP
+ ENDIF
+ 150 CONTINUE
+ SUMXPP=SXP(0)+2D0*SXP(1)+2D0*SXP(2)
+ IF(ITER.LE.2.OR.(ITER.LE.7.AND.ABS(SUMXPP-SUMXP).GT.
+ & PARP(14)*(SUMXPP+SUMXP))) GOTO 120
+
+C...Put convolution into output arrays.
+ FCONV=AEMP*(-XL)
+ XPEL(0)=FCONV*SXP(0)
+ DO 160 KFL=1,6
+ XPEL(KFL)=FCONV*SXP(KFL)
+ XPEL(-KFL)=XPEL(KFL)
+ 160 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPDGA
+C...Gives photon parton distribution.
+
+ SUBROUTINE PYPDGA(X,Q2,XPGA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION XPGA(-6:6),DGAG(4,3),DGBG(4,3),DGCG(4,3),DGAN(4,3),
+ &DGBN(4,3),DGCN(4,3),DGDN(4,3),DGEN(4,3),DGAS(4,3),DGBS(4,3),
+ &DGCS(4,3),DGDS(4,3),DGES(4,3)
+
+C...The following data lines are coefficients needed in the
+C...Drees and Grassie photon parton distribution parametrization.
+ DATA DGAG/-.207D0,.6158D0,1.074D0,0.D0,.8926D-2,.6594D0,
+ &.4766D0,.1975D-1,.03197D0,1.018D0,.2461D0,.2707D-1/
+ DATA DGBG/-.1987D0,.6257D0,8.352D0,5.024D0,.5085D-1,.2774D0,
+ &-.3906D0,-.3212D0,-.618D-2,.9476D0,-.6094D0,-.1067D-1/
+ DATA DGCG/5.119D0,-.2752D0,-6.993D0,2.298D0,-.2313D0,.1382D0,
+ &6.542D0,.5162D0,-.1216D0,.9047D0,2.653D0,.2003D-2/
+ DATA DGAN/2.285D0,-.1526D-1,1330.D0,4.219D0,-.3711D0,1.061D0,
+ &4.758D0,-.1503D-1,15.8D0,-.9464D0,-.5D0,-.2118D0/
+ DATA DGBN/6.073D0,-.8132D0,-41.31D0,3.165D0,-.1717D0,.7815D0,
+ &1.535D0,.7067D-2,2.742D0,-.7332D0,.7148D0,3.287D0/
+ DATA DGCN/-.4202D0,.1778D-1,.9216D0,.18D0,.8766D-1,.2197D-1,
+ &.1096D0,.204D0,.2917D-1,.4657D-1,.1785D0,.4811D-1/
+ DATA DGDN/-.8083D-1,.6346D0,1.208D0,.203D0,-.8915D0,.2857D0,
+ &2.973D0,.1185D0,-.342D-1,.7196D0,.7338D0,.8139D-1/
+ DATA DGEN/.5526D-1,1.136D0,.9512D0,.1163D-1,-.1816D0,.5866D0,
+ &2.421D0,.4059D0,-.2302D-1,.9229D0,.5873D0,-.79D-4/
+ DATA DGAS/16.69D0,-.7916D0,1099.D0,4.428D0,-.1207D0,1.071D0,
+ &1.977D0,-.8625D-2,6.734D0,-1.008D0,-.8594D-1,.7625D-1/
+ DATA DGBS/.176D0,.4794D-1,1.047D0,.25D-1,25.D0,-1.648D0,
+ &-.1563D-1,6.438D0,59.88D0,-2.983D0,4.48D0,.9686D0/
+ DATA DGCS/-.208D-1,.3386D-2,4.853D0,.8404D0,-.123D-1,1.162D0,
+ &.4824D0,-.11D-1,-.3226D-2,.8432D0,.3616D0,.1383D-2/
+ DATA DGDS/-.1685D-1,1.353D0,1.426D0,1.239D0,-.9194D-1,.7912D0,
+ &.6397D0,2.327D0,-.3321D-1,.9475D0,-.3198D0,.2132D-1/
+ DATA DGES/-.1986D0,1.1D0,1.136D0,-.2779D0,.2015D-1,.9869D0,
+ &-.7036D-1,.1694D-1,.1059D0,.6954D0,-.6663D0,.3683D0/
+
+C...Photon parton distribution from Drees and Grassie.
+C...Allowed variable range: 1 GeV^2 < Q^2 < 10000 GeV^2.
+ DO 100 KFL=-6,6
+ XPGA(KFL)=0D0
+ 100 CONTINUE
+ VINT(231)=1D0
+ IF(MSTP(57).LE.0) THEN
+ T=LOG(1D0/0.16D0)
+ ELSE
+ T=LOG(MIN(1D4,MAX(1D0,Q2))/0.16D0)
+ ENDIF
+ X1=1D0-X
+ NF=3
+ IF(Q2.GT.25D0) NF=4
+ IF(Q2.GT.300D0) NF=5
+ NFE=NF-2
+ AEM=PARU(101)
+
+C...Evaluate gluon content.
+ DGA=DGAG(1,NFE)*T**DGAG(2,NFE)+DGAG(3,NFE)*T**(-DGAG(4,NFE))
+ DGB=DGBG(1,NFE)*T**DGBG(2,NFE)+DGBG(3,NFE)*T**(-DGBG(4,NFE))
+ DGC=DGCG(1,NFE)*T**DGCG(2,NFE)+DGCG(3,NFE)*T**(-DGCG(4,NFE))
+ XPGL=DGA*X**DGB*X1**DGC
+
+C...Evaluate up- and down-type quark content.
+ DGA=DGAN(1,NFE)*T**DGAN(2,NFE)+DGAN(3,NFE)*T**(-DGAN(4,NFE))
+ DGB=DGBN(1,NFE)*T**DGBN(2,NFE)+DGBN(3,NFE)*T**(-DGBN(4,NFE))
+ DGC=DGCN(1,NFE)*T**DGCN(2,NFE)+DGCN(3,NFE)*T**(-DGCN(4,NFE))
+ DGD=DGDN(1,NFE)*T**DGDN(2,NFE)+DGDN(3,NFE)*T**(-DGDN(4,NFE))
+ DGE=DGEN(1,NFE)*T**DGEN(2,NFE)+DGEN(3,NFE)*T**(-DGEN(4,NFE))
+ XPQN=X*(X**2+X1**2)/(DGA-DGB*LOG(X1))+DGC*X**DGD*X1**DGE
+ DGA=DGAS(1,NFE)*T**DGAS(2,NFE)+DGAS(3,NFE)*T**(-DGAS(4,NFE))
+ DGB=DGBS(1,NFE)*T**DGBS(2,NFE)+DGBS(3,NFE)*T**(-DGBS(4,NFE))
+ DGC=DGCS(1,NFE)*T**DGCS(2,NFE)+DGCS(3,NFE)*T**(-DGCS(4,NFE))
+ DGD=DGDS(1,NFE)*T**DGDS(2,NFE)+DGDS(3,NFE)*T**(-DGDS(4,NFE))
+ DGE=DGES(1,NFE)*T**DGES(2,NFE)+DGES(3,NFE)*T**(-DGES(4,NFE))
+ DGF=9D0
+ IF(NF.EQ.4) DGF=10D0
+ IF(NF.EQ.5) DGF=55D0/6D0
+ XPQS=DGF*X*(X**2+X1**2)/(DGA-DGB*LOG(X1))+DGC*X**DGD*X1**DGE
+ IF(NF.LE.3) THEN
+ XPQU=(XPQS+9D0*XPQN)/6D0
+ XPQD=(XPQS-4.5D0*XPQN)/6D0
+ ELSEIF(NF.EQ.4) THEN
+ XPQU=(XPQS+6D0*XPQN)/8D0
+ XPQD=(XPQS-6D0*XPQN)/8D0
+ ELSE
+ XPQU=(XPQS+7.5D0*XPQN)/10D0
+ XPQD=(XPQS-5D0*XPQN)/10D0
+ ENDIF
+
+C...Put into output arrays.
+ XPGA(0)=AEM*XPGL
+ XPGA(1)=AEM*XPQD
+ XPGA(2)=AEM*XPQU
+ XPGA(3)=AEM*XPQD
+ IF(NF.GE.4) XPGA(4)=AEM*XPQU
+ IF(NF.GE.5) XPGA(5)=AEM*XPQD
+ DO 110 KFL=1,6
+ XPGA(-KFL)=XPGA(KFL)
+ 110 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGGAM
+C...Constructs the F2 and parton distributions of the photon
+C...by summing homogeneous (VMD) and inhomogeneous (anomalous) terms.
+C...For F2, c and b are included by the Bethe-Heitler formula;
+C...in the 'MSbar' scheme additionally a Cgamma term is added.
+C...Contains the SaS sets 1D, 1M, 2D and 2M.
+C...Adapted from SaSgam library, authors G.A. Schuler and T. Sjostrand.
+
+ SUBROUTINE PYGGAM(ISET,X,Q2,P2,IP2,F2GM,XPDFGM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYINT8/XPVMD(-6:6),XPANL(-6:6),XPANH(-6:6),XPBEH(-6:6),
+ &XPDIR(-6:6)
+ COMMON/PYINT9/VXPVMD(-6:6),VXPANL(-6:6),VXPANH(-6:6),VXPDGM(-6:6)
+ SAVE /PYINT8/,/PYINT9/
+C...Local arrays.
+ DIMENSION XPDFGM(-6:6),XPGA(-6:6), VXPGA(-6:6)
+C...Charm and bottom masses (low to compensate for J/psi etc.).
+ DATA PMC/1.3D0/, PMB/4.6D0/
+C...alpha_em and alpha_em/(2*pi).
+ DATA AEM/0.007297D0/, AEM2PI/0.0011614D0/
+C...Lambda value for 4 flavours.
+ DATA ALAM/0.20D0/
+C...Mixture u/(u+d), = 0.5 for incoherent and = 0.8 for coherent sum.
+ DATA FRACU/0.8D0/
+C...VMD couplings f_V**2/(4*pi).
+ DATA FRHO/2.20D0/, FOMEGA/23.6D0/, FPHI/18.4D0/
+C...Masses for rho (=omega) and phi.
+ DATA PMRHO/0.770D0/, PMPHI/1.020D0/
+C...Number of points in integration for IP2=1.
+ DATA NSTEP/100/
+
+C...Reset output.
+ F2GM=0D0
+ DO 100 KFL=-6,6
+ XPDFGM(KFL)=0D0
+ XPVMD(KFL)=0D0
+ XPANL(KFL)=0D0
+ XPANH(KFL)=0D0
+ XPBEH(KFL)=0D0
+ XPDIR(KFL)=0D0
+ VXPVMD(KFL)=0D0
+ VXPANL(KFL)=0D0
+ VXPANH(KFL)=0D0
+ VXPDGM(KFL)=0D0
+ 100 CONTINUE
+
+C...Set Q0 cut-off parameter as function of set used.
+ IF(ISET.LE.2) THEN
+ Q0=0.6D0
+ ELSE
+ Q0=2D0
+ ENDIF
+ Q02=Q0**2
+
+C...Scale choice for off-shell photon; common factors.
+ Q2A=Q2
+ FACNOR=1D0
+ IF(IP2.EQ.1) THEN
+ P2MX=P2+Q02
+ Q2A=Q2+P2*Q02/MAX(Q02,Q2)
+ FACNOR=LOG(Q2/Q02)/NSTEP
+ ELSEIF(IP2.EQ.2) THEN
+ P2MX=MAX(P2,Q02)
+ ELSEIF(IP2.EQ.3) THEN
+ P2MX=P2+Q02
+ Q2A=Q2+P2*Q02/MAX(Q02,Q2)
+ ELSEIF(IP2.EQ.4) THEN
+ P2MX=Q2*(Q02+P2)/(Q2+P2)*EXP(P2*(Q2-Q02)/
+ & ((Q2+P2)*(Q02+P2)))
+ ELSEIF(IP2.EQ.5) THEN
+ P2MXA=Q2*(Q02+P2)/(Q2+P2)*EXP(P2*(Q2-Q02)/
+ & ((Q2+P2)*(Q02+P2)))
+ P2MX=Q0*SQRT(P2MXA)
+ FACNOR=LOG(Q2/P2MXA)/LOG(Q2/P2MX)
+ ELSEIF(IP2.EQ.6) THEN
+ P2MX=Q2*(Q02+P2)/(Q2+P2)*EXP(P2*(Q2-Q02)/
+ & ((Q2+P2)*(Q02+P2)))
+ P2MX=MAX(0D0,1D0-P2/Q2)*P2MX+MIN(1D0,P2/Q2)*MAX(P2,Q02)
+ ELSE
+ P2MXA=Q2*(Q02+P2)/(Q2+P2)*EXP(P2*(Q2-Q02)/
+ & ((Q2+P2)*(Q02+P2)))
+ P2MX=Q0*SQRT(P2MXA)
+ P2MXB=P2MX
+ P2MX=MAX(0D0,1D0-P2/Q2)*P2MX+MIN(1D0,P2/Q2)*MAX(P2,Q02)
+ P2MXB=MAX(0D0,1D0-P2/Q2)*P2MXB+MIN(1D0,P2/Q2)*P2MXA
+ IF(ABS(Q2-Q02).GT.1D-6) THEN
+ FACNOR=LOG(Q2/P2MXA)/LOG(Q2/P2MXB)
+ ELSEIF(P2.LT.Q02) THEN
+ FACNOR=Q02**3/(Q02+P2)/(Q02**2-P2**2/2D0)
+ ELSE
+ FACNOR=1D0
+ ENDIF
+ ENDIF
+
+C...Call VMD parametrization for d quark and use to give rho, omega,
+C...phi. Note dipole dampening for off-shell photon.
+ CALL PYGVMD(ISET,1,X,Q2A,P2MX,ALAM,XPGA,VXPGA)
+ XFVAL=VXPGA(1)
+ XPGA(1)=XPGA(2)
+ XPGA(-1)=XPGA(-2)
+ FACUD=AEM*(1D0/FRHO+1D0/FOMEGA)*(PMRHO**2/(PMRHO**2+P2))**2
+ FACS=AEM*(1D0/FPHI)*(PMPHI**2/(PMPHI**2+P2))**2
+ DO 110 KFL=-5,5
+ XPVMD(KFL)=(FACUD+FACS)*XPGA(KFL)
+ 110 CONTINUE
+ XPVMD(1)=XPVMD(1)+(1D0-FRACU)*FACUD*XFVAL
+ XPVMD(2)=XPVMD(2)+FRACU*FACUD*XFVAL
+ XPVMD(3)=XPVMD(3)+FACS*XFVAL
+ XPVMD(-1)=XPVMD(-1)+(1D0-FRACU)*FACUD*XFVAL
+ XPVMD(-2)=XPVMD(-2)+FRACU*FACUD*XFVAL
+ XPVMD(-3)=XPVMD(-3)+FACS*XFVAL
+ VXPVMD(1)=(1D0-FRACU)*FACUD*XFVAL
+ VXPVMD(2)=FRACU*FACUD*XFVAL
+ VXPVMD(3)=FACS*XFVAL
+ VXPVMD(-1)=(1D0-FRACU)*FACUD*XFVAL
+ VXPVMD(-2)=FRACU*FACUD*XFVAL
+ VXPVMD(-3)=FACS*XFVAL
+
+ IF(IP2.NE.1) THEN
+C...Anomalous parametrizations for different strategies
+C...for off-shell photons; except full integration.
+
+C...Call anomalous parametrization for d + u + s.
+ CALL PYGANO(-3,X,Q2A,P2MX,ALAM,XPGA,VXPGA)
+ DO 120 KFL=-5,5
+ XPANL(KFL)=FACNOR*XPGA(KFL)
+ VXPANL(KFL)=FACNOR*VXPGA(KFL)
+ 120 CONTINUE
+
+C...Call anomalous parametrization for c and b.
+ CALL PYGANO(4,X,Q2A,P2MX,ALAM,XPGA,VXPGA)
+ DO 130 KFL=-5,5
+ XPANH(KFL)=FACNOR*XPGA(KFL)
+ VXPANH(KFL)=FACNOR*VXPGA(KFL)
+ 130 CONTINUE
+ CALL PYGANO(5,X,Q2A,P2MX,ALAM,XPGA,VXPGA)
+ DO 140 KFL=-5,5
+ XPANH(KFL)=XPANH(KFL)+FACNOR*XPGA(KFL)
+ VXPANH(KFL)=VXPANH(KFL)+FACNOR*VXPGA(KFL)
+ 140 CONTINUE
+
+ ELSE
+C...Special option: loop over flavours and integrate over k2.
+ DO 170 KF=1,5
+ DO 160 ISTEP=1,NSTEP
+ Q2STEP=Q02*(Q2/Q02)**((ISTEP-0.5D0)/NSTEP)
+ IF((KF.EQ.4.AND.Q2STEP.LT.PMC**2).OR.
+ & (KF.EQ.5.AND.Q2STEP.LT.PMB**2)) GOTO 160
+ CALL PYGVMD(0,KF,X,Q2,Q2STEP,ALAM,XPGA,VXPGA)
+ FACQ=AEM2PI*(Q2STEP/(Q2STEP+P2))**2*FACNOR
+ IF(MOD(KF,2).EQ.0) FACQ=FACQ*(8D0/9D0)
+ IF(MOD(KF,2).EQ.1) FACQ=FACQ*(2D0/9D0)
+ DO 150 KFL=-5,5
+ IF(KF.LE.3) XPANL(KFL)=XPANL(KFL)+FACQ*XPGA(KFL)
+ IF(KF.GE.4) XPANH(KFL)=XPANH(KFL)+FACQ*XPGA(KFL)
+ IF(KF.LE.3) VXPANL(KFL)=VXPANL(KFL)+FACQ*VXPGA(KFL)
+ IF(KF.GE.4) VXPANH(KFL)=VXPANH(KFL)+FACQ*VXPGA(KFL)
+ 150 CONTINUE
+ 160 CONTINUE
+ 170 CONTINUE
+ ENDIF
+
+C...Call Bethe-Heitler term expression for charm and bottom.
+ CALL PYGBEH(4,X,Q2,P2,PMC**2,XPBH)
+ XPBEH(4)=XPBH
+ XPBEH(-4)=XPBH
+ CALL PYGBEH(5,X,Q2,P2,PMB**2,XPBH)
+ XPBEH(5)=XPBH
+ XPBEH(-5)=XPBH
+
+C...For MSbar subtraction call C^gamma term expression for d, u, s.
+ IF(ISET.EQ.2.OR.ISET.EQ.4) THEN
+ CALL PYGDIR(X,Q2,P2,Q02,XPGA)
+ DO 180 KFL=-5,5
+ XPDIR(KFL)=XPGA(KFL)
+ 180 CONTINUE
+ ENDIF
+
+C...Store result in output array.
+ DO 190 KFL=-5,5
+ CHSQ=1D0/9D0
+ IF(IABS(KFL).EQ.2.OR.IABS(KFL).EQ.4) CHSQ=4D0/9D0
+ XPF2=XPVMD(KFL)+XPANL(KFL)+XPBEH(KFL)+XPDIR(KFL)
+ IF(KFL.NE.0) F2GM=F2GM+CHSQ*XPF2
+ XPDFGM(KFL)=XPVMD(KFL)+XPANL(KFL)+XPANH(KFL)
+ VXPDGM(KFL)=VXPVMD(KFL)+VXPANL(KFL)+VXPANH(KFL)
+ 190 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGVMD
+C...Evaluates the VMD parton distributions of a photon,
+C...evolved homogeneously from an initial scale P2 to Q2.
+C...Does not include dipole suppression factor.
+C...ISET is parton distribution set, see above;
+C...additionally ISET=0 is used for the evolution of an anomalous photon
+C...which branched at a scale P2 and then evolved homogeneously to Q2.
+C...ALAM is the 4-flavour Lambda, which is automatically converted
+C...to 3- and 5-flavour equivalents as needed.
+C...Adapted from SaSgam library, authors G.A. Schuler and T. Sjostrand.
+
+ SUBROUTINE PYGVMD(ISET,KF,X,Q2,P2,ALAM,XPGA,VXPGA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Local arrays and data.
+ DIMENSION XPGA(-6:6), VXPGA(-6:6)
+ DATA PMC/1.3D0/, PMB/4.6D0/, AEM/0.007297D0/, AEM2PI/0.0011614D0/
+
+C...Reset output.
+ DO 100 KFL=-6,6
+ XPGA(KFL)=0D0
+ VXPGA(KFL)=0D0
+ 100 CONTINUE
+ KFA=IABS(KF)
+
+C...Calculate Lambda; protect against unphysical Q2 and P2 input.
+ ALAM3=ALAM*(PMC/ALAM)**(2D0/27D0)
+ ALAM5=ALAM*(ALAM/PMB)**(2D0/23D0)
+ P2EFF=MAX(P2,1.2D0*ALAM3**2)
+ IF(KFA.EQ.4) P2EFF=MAX(P2EFF,PMC**2)
+ IF(KFA.EQ.5) P2EFF=MAX(P2EFF,PMB**2)
+ Q2EFF=MAX(Q2,P2EFF)
+
+C...Find number of flavours at lower and upper scale.
+ NFP=4
+ IF(P2EFF.LT.PMC**2) NFP=3
+ IF(P2EFF.GT.PMB**2) NFP=5
+ NFQ=4
+ IF(Q2EFF.LT.PMC**2) NFQ=3
+ IF(Q2EFF.GT.PMB**2) NFQ=5
+
+C...Find s as sum of 3-, 4- and 5-flavour parts.
+ S=0D0
+ IF(NFP.EQ.3) THEN
+ Q2DIV=PMC**2
+ IF(NFQ.EQ.3) Q2DIV=Q2EFF
+ S=S+(6D0/27D0)*LOG(LOG(Q2DIV/ALAM3**2)/LOG(P2EFF/ALAM3**2))
+ ENDIF
+ IF(NFP.LE.4.AND.NFQ.GE.4) THEN
+ P2DIV=P2EFF
+ IF(NFP.EQ.3) P2DIV=PMC**2
+ Q2DIV=Q2EFF
+ IF(NFQ.EQ.5) Q2DIV=PMB**2
+ S=S+(6D0/25D0)*LOG(LOG(Q2DIV/ALAM**2)/LOG(P2DIV/ALAM**2))
+ ENDIF
+ IF(NFQ.EQ.5) THEN
+ P2DIV=PMB**2
+ IF(NFP.EQ.5) P2DIV=P2EFF
+ S=S+(6D0/23D0)*LOG(LOG(Q2EFF/ALAM5**2)/LOG(P2DIV/ALAM5**2))
+ ENDIF
+
+C...Calculate frequent combinations of x and s.
+ X1=1D0-X
+ XL=-LOG(X)
+ S2=S**2
+ S3=S**3
+ S4=S**4
+
+C...Evaluate homogeneous anomalous parton distributions below or
+C...above threshold.
+ IF(ISET.EQ.0) THEN
+ IF(Q2.LE.P2.OR.(KFA.EQ.4.AND.Q2.LT.PMC**2).OR.
+ & (KFA.EQ.5.AND.Q2.LT.PMB**2)) THEN
+ XVAL = X * 1.5D0 * (X**2+X1**2)
+ XGLU = 0D0
+ XSEA = 0D0
+ ELSE
+ XVAL = (1.5D0/(1D0-0.197D0*S+4.33D0*S2)*X**2 +
+ & (1.5D0+2.10D0*S)/(1D0+3.29D0*S)*X1**2 +
+ & 5.23D0*S/(1D0+1.17D0*S+19.9D0*S3)*X*X1) *
+ & X**(1D0/(1D0+1.5D0*S)) * (1D0-X**2)**(2.667D0*S)
+ XGLU = 4D0*S/(1D0+4.76D0*S+15.2D0*S2+29.3D0*S4) *
+ & X**(-2.03D0*S/(1D0+2.44D0*S)) * (X1*XL)**(1.333D0*S) *
+ & ((4D0*X**2+7D0*X+4D0)*X1/3D0 - 2D0*X*(1D0+X)*XL)
+ XSEA = S2/(1D0+4.54D0*S+8.19D0*S2+8.05D0*S3) *
+ & X**(-1.54D0*S/(1D0+1.29D0*S)) * X1**(2.667D0*S) *
+ & ((8D0-73D0*X+62D0*X**2)*X1/9D0 + (3D0-8D0*X**2/3D0)*X*XL +
+ & (2D0*X-1D0)*X*XL**2)
+ ENDIF
+
+C...Evaluate set 1D parton distributions below or above threshold.
+ ELSEIF(ISET.EQ.1) THEN
+ IF(Q2.LE.P2.OR.(KFA.EQ.4.AND.Q2.LT.PMC**2).OR.
+ & (KFA.EQ.5.AND.Q2.LT.PMB**2)) THEN
+ XVAL = 1.294D0 * X**0.80D0 * X1**0.76D0
+ XGLU = 1.273D0 * X**0.40D0 * X1**1.76D0
+ XSEA = 0.100D0 * X1**3.76D0
+ ELSE
+ XVAL = 1.294D0/(1D0+0.252D0*S+3.079D0*S2) *
+ & X**(0.80D0-0.13D0*S) * X1**(0.76D0+0.667D0*S) * XL**(2D0*S)
+ XGLU = 7.90D0*S/(1D0+5.50D0*S) * EXP(-5.16D0*S) *
+ & X**(-1.90D0*S/(1D0+3.60D0*S)) * X1**1.30D0 *
+ & XL**(0.50D0+3D0*S) + 1.273D0 * EXP(-10D0*S) *
+ & X**0.40D0 * X1**(1.76D0+3D0*S)
+ XSEA = (0.1D0-0.397D0*S2+1.121D0*S3)/
+ & (1D0+5.61D0*S2+5.26D0*S3) * X**(-7.32D0*S2/(1D0+10.3D0*S2)) *
+ & X1**((3.76D0+15D0*S+12D0*S2)/(1D0+4D0*S))
+ XSEA0 = 0.100D0 * X1**3.76D0
+ ENDIF
+
+C...Evaluate set 1M parton distributions below or above threshold.
+ ELSEIF(ISET.EQ.2) THEN
+ IF(Q2.LE.P2.OR.(KFA.EQ.4.AND.Q2.LT.PMC**2).OR.
+ & (KFA.EQ.5.AND.Q2.LT.PMB**2)) THEN
+ XVAL = 0.8477D0 * X**0.51D0 * X1**1.37D0
+ XGLU = 3.42D0 * X**0.255D0 * X1**2.37D0
+ XSEA = 0D0
+ ELSE
+ XVAL = 0.8477D0/(1D0+1.37D0*S+2.18D0*S2+3.73D0*S3) *
+ & X**(0.51D0+0.21D0*S) * X1**1.37D0 * XL**(2.667D0*S)
+ XGLU = 24D0*S/(1D0+9.6D0*S+0.92D0*S2+14.34D0*S3) *
+ & EXP(-5.94D0*S) * X**((-0.013D0-1.80D0*S)/(1D0+3.14D0*S)) *
+ & X1**(2.37D0+0.4D0*S) * XL**(0.32D0+3.6D0*S) + 3.42D0 *
+ & EXP(-12D0*S) * X**0.255D0 * X1**(2.37D0+3D0*S)
+ XSEA = 0.842D0*S/(1D0+21.3D0*S-33.2D0*S2+229D0*S3) *
+ & X**((0.13D0-2.90D0*S)/(1D0+5.44D0*S)) * X1**(3.45D0+0.5D0*S) *
+ & XL**(2.8D0*S)
+ XSEA0 = 0D0
+ ENDIF
+
+C...Evaluate set 2D parton distributions below or above threshold.
+ ELSEIF(ISET.EQ.3) THEN
+ IF(Q2.LE.P2.OR.(KFA.EQ.4.AND.Q2.LT.PMC**2).OR.
+ & (KFA.EQ.5.AND.Q2.LT.PMB**2)) THEN
+ XVAL = X**0.46D0 * X1**0.64D0 + 0.76D0 * X
+ XGLU = 1.925D0 * X1**2
+ XSEA = 0.242D0 * X1**4
+ ELSE
+ XVAL = (1D0+0.186D0*S)/(1D0-0.209D0*S+1.495D0*S2) *
+ & X**(0.46D0+0.25D0*S) *
+ & X1**((0.64D0+0.14D0*S+5D0*S2)/(1D0+S)) * XL**(1.9D0*S) +
+ & (0.76D0+0.4D0*S) * X * X1**(2.667D0*S)
+ XGLU = (1.925D0+5.55D0*S+147D0*S2)/(1D0-3.59D0*S+3.32D0*S2) *
+ & EXP(-18.67D0*S) *
+ & X**((-5.81D0*S-5.34D0*S2)/(1D0+29D0*S-4.26D0*S2))
+ & * X1**((2D0-5.9D0*S)/(1D0+1.7D0*S)) *
+ & XL**(9.3D0*S/(1D0+1.7D0*S))
+ XSEA = (0.242D0-0.252D0*S+1.19D0*S2)/
+ & (1D0-0.607D0*S+21.95D0*S2) *
+ & X**(-12.1D0*S2/(1D0+2.62D0*S+16.7D0*S2)) * X1**4 * XL**S
+ XSEA0 = 0.242D0 * X1**4
+ ENDIF
+
+C...Evaluate set 2M parton distributions below or above threshold.
+ ELSEIF(ISET.EQ.4) THEN
+ IF(Q2.LE.P2.OR.(KFA.EQ.4.AND.Q2.LT.PMC**2).OR.
+ & (KFA.EQ.5.AND.Q2.LT.PMB**2)) THEN
+ XVAL = 1.168D0 * X**0.50D0 * X1**2.60D0 + 0.965D0 * X
+ XGLU = 1.808D0 * X1**2
+ XSEA = 0.209D0 * X1**4
+ ELSE
+ XVAL = (1.168D0+1.771D0*S+29.35D0*S2) * EXP(-5.776D0*S) *
+ & X**((0.5D0+0.208D0*S)/(1D0-0.794D0*S+1.516D0*S2)) *
+ & X1**((2.6D0+7.6D0*S)/(1D0+5D0*S)) *
+ & XL**(5.15D0*S/(1D0+2D0*S)) +
+ & (0.965D0+22.35D0*S)/(1D0+18.4D0*S) * X * X1**(2.667D0*S)
+ XGLU = (1.808D0+29.9D0*S)/(1D0+26.4D0*S) * EXP(-5.28D0*S) *
+ & X**((-5.35D0*S-10.11D0*S2)/(1D0+31.71D0*S)) *
+ & X1**((2D0-7.3D0*S+4D0*S2)/(1D0+2.5D0*S)) *
+ & XL**(10.9D0*S/(1D0+2.5D0*S))
+ XSEA = (0.209D0+0.644D0*S2)/(1D0+0.319D0*S+17.6D0*S2) *
+ & X**((-0.373D0*S-7.71D0*S2)/(1D0+0.815D0*S+11.0D0*S2)) *
+ & X1**(4D0+S) * XL**(0.45D0*S)
+ XSEA0 = 0.209D0 * X1**4
+ ENDIF
+ ENDIF
+
+C...Threshold factors for c and b sea.
+ SLL=LOG(LOG(Q2EFF/ALAM**2)/LOG(P2EFF/ALAM**2))
+ XCHM=0D0
+ IF(Q2.GT.PMC**2.AND.Q2.GT.1.001D0*P2EFF) THEN
+ SCH=MAX(0D0,LOG(LOG(PMC**2/ALAM**2)/LOG(P2EFF/ALAM**2)))
+ IF(ISET.EQ.0) THEN
+ XCHM=XSEA*(1D0-(SCH/SLL)**2)
+ ELSE
+ XCHM=MAX(0D0,XSEA-XSEA0*X1**(2.667D0*S))*(1D0-SCH/SLL)
+ ENDIF
+ ENDIF
+ XBOT=0D0
+ IF(Q2.GT.PMB**2.AND.Q2.GT.1.001D0*P2EFF) THEN
+ SBT=MAX(0D0,LOG(LOG(PMB**2/ALAM**2)/LOG(P2EFF/ALAM**2)))
+ IF(ISET.EQ.0) THEN
+ XBOT=XSEA*(1D0-(SBT/SLL)**2)
+ ELSE
+ XBOT=MAX(0D0,XSEA-XSEA0*X1**(2.667D0*S))*(1D0-SBT/SLL)
+ ENDIF
+ ENDIF
+
+C...Fill parton distributions.
+ XPGA(0)=XGLU
+ XPGA(1)=XSEA
+ XPGA(2)=XSEA
+ XPGA(3)=XSEA
+ XPGA(4)=XCHM
+ XPGA(5)=XBOT
+ XPGA(KFA)=XPGA(KFA)+XVAL
+ DO 110 KFL=1,5
+ XPGA(-KFL)=XPGA(KFL)
+ 110 CONTINUE
+ VXPGA(KFA)=XVAL
+ VXPGA(-KFA)=XVAL
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGANO
+C...Evaluates the parton distributions of the anomalous photon,
+C...inhomogeneously evolved from a scale P2 (where it vanishes) to Q2.
+C...KF=0 gives the sum over (up to) 5 flavours,
+C...KF<0 limits to flavours up to abs(KF),
+C...KF>0 is for flavour KF only.
+C...ALAM is the 4-flavour Lambda, which is automatically converted
+C...to 3- and 5-flavour equivalents as needed.
+C...Adapted from SaSgam library, authors G.A. Schuler and T. Sjostrand.
+
+ SUBROUTINE PYGANO(KF,X,Q2,P2,ALAM,XPGA,VXPGA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Local arrays and data.
+ DIMENSION XPGA(-6:6), VXPGA(-6:6), ALAMSQ(3:5)
+ DATA PMC/1.3D0/, PMB/4.6D0/, AEM/0.007297D0/, AEM2PI/0.0011614D0/
+
+C...Reset output.
+ DO 100 KFL=-6,6
+ XPGA(KFL)=0D0
+ VXPGA(KFL)=0D0
+ 100 CONTINUE
+ IF(Q2.LE.P2) RETURN
+ KFA=IABS(KF)
+
+C...Calculate Lambda; protect against unphysical Q2 and P2 input.
+ ALAMSQ(3)=(ALAM*(PMC/ALAM)**(2D0/27D0))**2
+ ALAMSQ(4)=ALAM**2
+ ALAMSQ(5)=(ALAM*(ALAM/PMB)**(2D0/23D0))**2
+ P2EFF=MAX(P2,1.2D0*ALAMSQ(3))
+ IF(KF.EQ.4) P2EFF=MAX(P2EFF,PMC**2)
+ IF(KF.EQ.5) P2EFF=MAX(P2EFF,PMB**2)
+ Q2EFF=MAX(Q2,P2EFF)
+ XL=-LOG(X)
+
+C...Find number of flavours at lower and upper scale.
+ NFP=4
+ IF(P2EFF.LT.PMC**2) NFP=3
+ IF(P2EFF.GT.PMB**2) NFP=5
+ NFQ=4
+ IF(Q2EFF.LT.PMC**2) NFQ=3
+ IF(Q2EFF.GT.PMB**2) NFQ=5
+
+C...Define range of flavour loop.
+ IF(KF.EQ.0) THEN
+ KFLMN=1
+ KFLMX=5
+ ELSEIF(KF.LT.0) THEN
+ KFLMN=1
+ KFLMX=KFA
+ ELSE
+ KFLMN=KFA
+ KFLMX=KFA
+ ENDIF
+
+C...Loop over flavours the photon can branch into.
+ DO 110 KFL=KFLMN,KFLMX
+
+C...Light flavours: calculate t range and (approximate) s range.
+ IF(KFL.LE.3.AND.(KFL.EQ.1.OR.KFL.EQ.KF)) THEN
+ TDIFF=LOG(Q2EFF/P2EFF)
+ S=(6D0/(33D0-2D0*NFQ))*LOG(LOG(Q2EFF/ALAMSQ(NFQ))/
+ & LOG(P2EFF/ALAMSQ(NFQ)))
+ IF(NFQ.GT.NFP) THEN
+ Q2DIV=PMB**2
+ IF(NFQ.EQ.4) Q2DIV=PMC**2
+ SNFQ=(6D0/(33D0-2D0*NFQ))*LOG(LOG(Q2DIV/ALAMSQ(NFQ))/
+ & LOG(P2EFF/ALAMSQ(NFQ)))
+ SNFP=(6D0/(33D0-2D0*(NFQ-1)))*LOG(LOG(Q2DIV/ALAMSQ(NFQ-1))/
+ & LOG(P2EFF/ALAMSQ(NFQ-1)))
+ S=S+(LOG(Q2DIV/P2EFF)/LOG(Q2EFF/P2EFF))*(SNFP-SNFQ)
+ ENDIF
+ IF(NFQ.EQ.5.AND.NFP.EQ.3) THEN
+ Q2DIV=PMC**2
+ SNF4=(6D0/(33D0-2D0*4))*LOG(LOG(Q2DIV/ALAMSQ(4))/
+ & LOG(P2EFF/ALAMSQ(4)))
+ SNF3=(6D0/(33D0-2D0*3))*LOG(LOG(Q2DIV/ALAMSQ(3))/
+ & LOG(P2EFF/ALAMSQ(3)))
+ S=S+(LOG(Q2DIV/P2EFF)/LOG(Q2EFF/P2EFF))*(SNF3-SNF4)
+ ENDIF
+
+C...u and s quark do not need a separate treatment when d has been done.
+ ELSEIF(KFL.EQ.2.OR.KFL.EQ.3) THEN
+
+C...Charm: as above, but only include range above c threshold.
+ ELSEIF(KFL.EQ.4) THEN
+ IF(Q2.LE.PMC**2) GOTO 110
+ P2EFF=MAX(P2EFF,PMC**2)
+ Q2EFF=MAX(Q2EFF,P2EFF)
+ TDIFF=LOG(Q2EFF/P2EFF)
+ S=(6D0/(33D0-2D0*NFQ))*LOG(LOG(Q2EFF/ALAMSQ(NFQ))/
+ & LOG(P2EFF/ALAMSQ(NFQ)))
+ IF(NFQ.EQ.5.AND.NFP.EQ.4) THEN
+ Q2DIV=PMB**2
+ SNFQ=(6D0/(33D0-2D0*NFQ))*LOG(LOG(Q2DIV/ALAMSQ(NFQ))/
+ & LOG(P2EFF/ALAMSQ(NFQ)))
+ SNFP=(6D0/(33D0-2D0*(NFQ-1)))*LOG(LOG(Q2DIV/ALAMSQ(NFQ-1))/
+ & LOG(P2EFF/ALAMSQ(NFQ-1)))
+ S=S+(LOG(Q2DIV/P2EFF)/LOG(Q2EFF/P2EFF))*(SNFP-SNFQ)
+ ENDIF
+
+C...Bottom: as above, but only include range above b threshold.
+ ELSEIF(KFL.EQ.5) THEN
+ IF(Q2.LE.PMB**2) GOTO 110
+ P2EFF=MAX(P2EFF,PMB**2)
+ Q2EFF=MAX(Q2,P2EFF)
+ TDIFF=LOG(Q2EFF/P2EFF)
+ S=(6D0/(33D0-2D0*NFQ))*LOG(LOG(Q2EFF/ALAMSQ(NFQ))/
+ & LOG(P2EFF/ALAMSQ(NFQ)))
+ ENDIF
+
+C...Evaluate flavour-dependent prefactor (charge^2 etc.).
+ CHSQ=1D0/9D0
+ IF(KFL.EQ.2.OR.KFL.EQ.4) CHSQ=4D0/9D0
+ FAC=AEM2PI*2D0*CHSQ*TDIFF
+
+C...Evaluate parton distributions (normalized to unit momentum sum).
+ IF(KFL.EQ.1.OR.KFL.EQ.4.OR.KFL.EQ.5.OR.KFL.EQ.KF) THEN
+ XVAL= ((1.5D0+2.49D0*S+26.9D0*S**2)/(1D0+32.3D0*S**2)*X**2 +
+ & (1.5D0-0.49D0*S+7.83D0*S**2)/(1D0+7.68D0*S**2)*(1D0-X)**2 +
+ & 1.5D0*S/(1D0-3.2D0*S+7D0*S**2)*X*(1D0-X)) *
+ & X**(1D0/(1D0+0.58D0*S)) * (1D0-X**2)**(2.5D0*S/(1D0+10D0*S))
+ XGLU= 2D0*S/(1D0+4D0*S+7D0*S**2) *
+ & X**(-1.67D0*S/(1D0+2D0*S)) * (1D0-X**2)**(1.2D0*S) *
+ & ((4D0*X**2+7D0*X+4D0)*(1D0-X)/3D0 - 2D0*X*(1D0+X)*XL)
+ XSEA= 0.333D0*S**2/(1D0+4.90D0*S+4.69D0*S**2+21.4D0*S**3) *
+ & X**(-1.18D0*S/(1D0+1.22D0*S)) * (1D0-X)**(1.2D0*S) *
+ & ((8D0-73D0*X+62D0*X**2)*(1D0-X)/9D0 +
+ & (3D0-8D0*X**2/3D0)*X*XL + (2D0*X-1D0)*X*XL**2)
+
+C...Threshold factors for c and b sea.
+ SLL=LOG(LOG(Q2EFF/ALAM**2)/LOG(P2EFF/ALAM**2))
+ XCHM=0D0
+ IF(Q2.GT.PMC**2.AND.Q2.GT.1.001D0*P2EFF) THEN
+ SCH=MAX(0D0,LOG(LOG(PMC**2/ALAM**2)/LOG(P2EFF/ALAM**2)))
+ XCHM=XSEA*(1D0-(SCH/SLL)**3)
+ ENDIF
+ XBOT=0D0
+ IF(Q2.GT.PMB**2.AND.Q2.GT.1.001D0*P2EFF) THEN
+ SBT=MAX(0D0,LOG(LOG(PMB**2/ALAM**2)/LOG(P2EFF/ALAM**2)))
+ XBOT=XSEA*(1D0-(SBT/SLL)**3)
+ ENDIF
+ ENDIF
+
+C...Add contribution of each valence flavour.
+ XPGA(0)=XPGA(0)+FAC*XGLU
+ XPGA(1)=XPGA(1)+FAC*XSEA
+ XPGA(2)=XPGA(2)+FAC*XSEA
+ XPGA(3)=XPGA(3)+FAC*XSEA
+ XPGA(4)=XPGA(4)+FAC*XCHM
+ XPGA(5)=XPGA(5)+FAC*XBOT
+ XPGA(KFL)=XPGA(KFL)+FAC*XVAL
+ VXPGA(KFL)=VXPGA(KFL)+FAC*XVAL
+ 110 CONTINUE
+ DO 120 KFL=1,5
+ XPGA(-KFL)=XPGA(KFL)
+ VXPGA(-KFL)=VXPGA(KFL)
+ 120 CONTINUE
+
+ RETURN
+ END
+
+
+C*********************************************************************
+
+C...PYGBEH
+C...Evaluates the Bethe-Heitler cross section for heavy flavour
+C...production.
+C...Adapted from SaSgam library, authors G.A. Schuler and T. Sjostrand.
+
+ SUBROUTINE PYGBEH(KF,X,Q2,P2,PM2,XPBH)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local data.
+ DATA AEM2PI/0.0011614D0/
+
+C...Reset output.
+ XPBH=0D0
+ SIGBH=0D0
+
+C...Check kinematics limits.
+ IF(X.GE.Q2/(4D0*PM2+Q2+P2)) RETURN
+ W2=Q2*(1D0-X)/X-P2
+ BETA2=1D0-4D0*PM2/W2
+ IF(BETA2.LT.1D-10) RETURN
+ BETA=SQRT(BETA2)
+ RMQ=4D0*PM2/Q2
+
+C...Simple case: P2 = 0.
+ IF(P2.LT.1D-4) THEN
+ IF(BETA.LT.0.99D0) THEN
+ XBL=LOG((1D0+BETA)/(1D0-BETA))
+ ELSE
+ XBL=LOG((1D0+BETA)**2*W2/(4D0*PM2))
+ ENDIF
+ SIGBH=BETA*(8D0*X*(1D0-X)-1D0-RMQ*X*(1D0-X))+
+ & XBL*(X**2+(1D0-X)**2+RMQ*X*(1D0-3D0*X)-0.5D0*RMQ**2*X**2)
+
+C...Complicated case: P2 > 0, based on approximation of
+C...C.T. Hill and G.G. Ross, Nucl. Phys. B148 (1979) 373
+ ELSE
+ RPQ=1D0-4D0*X**2*P2/Q2
+ IF(RPQ.GT.1D-10) THEN
+ RPBE=SQRT(RPQ*BETA2)
+ IF(RPBE.LT.0.99D0) THEN
+ XBL=LOG((1D0+RPBE)/(1D0-RPBE))
+ XBI=2D0*RPBE/(1D0-RPBE**2)
+ ELSE
+ RPBESN=4D0*PM2/W2+(4D0*X**2*P2/Q2)*BETA2
+ XBL=LOG((1D0+RPBE)**2/RPBESN)
+ XBI=2D0*RPBE/RPBESN
+ ENDIF
+ SIGBH=BETA*(6D0*X*(1D0-X)-1D0)+
+ & XBL*(X**2+(1D0-X)**2+RMQ*X*(1D0-3D0*X)-0.5D0*RMQ**2*X**2)+
+ & XBI*(2D0*X/Q2)*(PM2*X*(2D0-RMQ)-P2*X)
+ ENDIF
+ ENDIF
+
+C...Multiply by charge-squared etc. to get parton distribution.
+ CHSQ=1D0/9D0
+ IF(IABS(KF).EQ.2.OR.IABS(KF).EQ.4) CHSQ=4D0/9D0
+ XPBH=3D0*CHSQ*AEM2PI*X*SIGBH
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGDIR
+C...Evaluates the direct contribution, i.e. the C^gamma term,
+C...as needed in MSbar parametrizations.
+C...Adapted from SaSgam library, authors G.A. Schuler and T. Sjostrand.
+
+ SUBROUTINE PYGDIR(X,Q2,P2,Q02,XPGA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Local array and data.
+ DIMENSION XPGA(-6:6)
+ DATA PMC/1.3D0/, PMB/4.6D0/, AEM2PI/0.0011614D0/
+
+C...Reset output.
+ DO 100 KFL=-6,6
+ XPGA(KFL)=0D0
+ 100 CONTINUE
+
+C...Evaluate common x-dependent expression.
+ XTMP = (X**2+(1D0-X)**2) * (-LOG(X)) - 1D0
+ CGAM = 3D0*AEM2PI*X * (XTMP*(1D0+P2/(P2+Q02)) + 6D0*X*(1D0-X))
+
+C...d, u, s part by simple charge factor.
+ XPGA(1)=(1D0/9D0)*CGAM
+ XPGA(2)=(4D0/9D0)*CGAM
+ XPGA(3)=(1D0/9D0)*CGAM
+
+C...Also fill for antiquarks.
+ DO 110 KF=1,5
+ XPGA(-KF)=XPGA(KF)
+ 110 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPDPI
+C...Gives pi+ parton distribution according to two different
+C...parametrizations.
+
+ SUBROUTINE PYPDPI(X,Q2,XPPI)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION XPPI(-6:6),COW(3,5,4,2),XQ(9),TS(6)
+
+C...The following data lines are coefficients needed in the
+C...Owens pion parton distribution parametrizations, see below.
+C...Expansion coefficients for up and down valence quark distributions.
+ DATA ((COW(IP,IS,1,1),IS=1,5),IP=1,3)/
+ &4.0000D-01, 7.0000D-01, 0.0000D+00, 0.0000D+00, 0.0000D+00,
+ &-6.2120D-02, 6.4780D-01, 0.0000D+00, 0.0000D+00, 0.0000D+00,
+ &-7.1090D-03, 1.3350D-02, 0.0000D+00, 0.0000D+00, 0.0000D+00/
+ DATA ((COW(IP,IS,1,2),IS=1,5),IP=1,3)/
+ &4.0000D-01, 6.2800D-01, 0.0000D+00, 0.0000D+00, 0.0000D+00,
+ &-5.9090D-02, 6.4360D-01, 0.0000D+00, 0.0000D+00, 0.0000D+00,
+ &-6.5240D-03, 1.4510D-02, 0.0000D+00, 0.0000D+00, 0.0000D+00/
+C...Expansion coefficients for gluon distribution.
+ DATA ((COW(IP,IS,2,1),IS=1,5),IP=1,3)/
+ &8.8800D-01, 0.0000D+00, 3.1100D+00, 6.0000D+00, 0.0000D+00,
+ &-1.8020D+00, -1.5760D+00, -1.3170D-01, 2.8010D+00, -1.7280D+01,
+ &1.8120D+00, 1.2000D+00, 5.0680D-01, -1.2160D+01, 2.0490D+01/
+ DATA ((COW(IP,IS,2,2),IS=1,5),IP=1,3)/
+ &7.9400D-01, 0.0000D+00, 2.8900D+00, 6.0000D+00, 0.0000D+00,
+ &-9.1440D-01, -1.2370D+00, 5.9660D-01, -3.6710D+00, -8.1910D+00,
+ &5.9660D-01, 6.5820D-01, -2.5500D-01, -2.3040D+00, 7.7580D+00/
+C...Expansion coefficients for (up+down+strange) quark sea distribution.
+ DATA ((COW(IP,IS,3,1),IS=1,5),IP=1,3)/
+ &9.0000D-01, 0.0000D+00, 5.0000D+00, 0.0000D+00, 0.0000D+00,
+ &-2.4280D-01, -2.1200D-01, 8.6730D-01, 1.2660D+00, 2.3820D+00,
+ &1.3860D-01, 3.6710D-03, 4.7470D-02, -2.2150D+00, 3.4820D-01/
+ DATA ((COW(IP,IS,3,2),IS=1,5),IP=1,3)/
+ &9.0000D-01, 0.0000D+00, 5.0000D+00, 0.0000D+00, 0.0000D+00,
+ &-1.4170D-01, -1.6970D-01, -2.4740D+00, -2.5340D+00, 5.6210D-01,
+ &-1.7400D-01, -9.6230D-02, 1.5750D+00, 1.3780D+00, -2.7010D-01/
+C...Expansion coefficients for charm quark sea distribution.
+ DATA ((COW(IP,IS,4,1),IS=1,5),IP=1,3)/
+ &0.0000D+00, -2.2120D-02, 2.8940D+00, 0.0000D+00, 0.0000D+00,
+ &7.9280D-02, -3.7850D-01, 9.4330D+00, 5.2480D+00, 8.3880D+00,
+ &-6.1340D-02, -1.0880D-01, -1.0852D+01, -7.1870D+00, -1.1610D+01/
+ DATA ((COW(IP,IS,4,2),IS=1,5),IP=1,3)/
+ &0.0000D+00, -8.8200D-02, 1.9240D+00, 0.0000D+00, 0.0000D+00,
+ &6.2290D-02, -2.8920D-01, 2.4240D-01, -4.4630D+00, -8.3670D-01,
+ &-4.0990D-02, -1.0820D-01, 2.0360D+00, 5.2090D+00, -4.8400D-02/
+
+C...Euler's beta function, requires ordinary Gamma function
+ EULBET(X,Y)=PYGAMM(X)*PYGAMM(Y)/PYGAMM(X+Y)
+
+C...Reset output array.
+ DO 100 KFL=-6,6
+ XPPI(KFL)=0D0
+ 100 CONTINUE
+
+ IF(MSTP(53).LE.2) THEN
+C...Pion parton distributions from Owens.
+C...Allowed variable range: 4 GeV^2 < Q^2 < approx 2000 GeV^2.
+
+C...Determine set, Lambda and s expansion variable.
+ NSET=MSTP(53)
+ IF(NSET.EQ.1) ALAM=0.2D0
+ IF(NSET.EQ.2) ALAM=0.4D0
+ VINT(231)=4D0
+ IF(MSTP(57).LE.0) THEN
+ SD=0D0
+ ELSE
+ Q2IN=MIN(2D3,MAX(4D0,Q2))
+ SD=LOG(LOG(Q2IN/ALAM**2)/LOG(4D0/ALAM**2))
+ ENDIF
+
+C...Calculate parton distributions.
+ DO 120 KFL=1,4
+ DO 110 IS=1,5
+ TS(IS)=COW(1,IS,KFL,NSET)+COW(2,IS,KFL,NSET)*SD+
+ & COW(3,IS,KFL,NSET)*SD**2
+ 110 CONTINUE
+ IF(KFL.EQ.1) THEN
+ XQ(KFL)=X**TS(1)*(1D0-X)**TS(2)/EULBET(TS(1),TS(2)+1D0)
+ ELSE
+ XQ(KFL)=TS(1)*X**TS(2)*(1D0-X)**TS(3)*(1D0+TS(4)*X+
+ & TS(5)*X**2)
+ ENDIF
+ 120 CONTINUE
+
+C...Put into output array.
+ XPPI(0)=XQ(2)
+ XPPI(1)=XQ(3)/6D0
+ XPPI(2)=XQ(1)+XQ(3)/6D0
+ XPPI(3)=XQ(3)/6D0
+ XPPI(4)=XQ(4)
+ XPPI(-1)=XQ(1)+XQ(3)/6D0
+ XPPI(-2)=XQ(3)/6D0
+ XPPI(-3)=XQ(3)/6D0
+ XPPI(-4)=XQ(4)
+
+C...Leading order pion parton distributions from Glueck, Reya and Vogt.
+C...Allowed variable range: 0.25 GeV^2 < Q^2 < 10^8 GeV^2 and
+C...10^-5 < x < 1.
+ ELSE
+
+C...Determine s expansion variable and some x expressions.
+ VINT(231)=0.25D0
+ IF(MSTP(57).LE.0) THEN
+ SD=0D0
+ ELSE
+ Q2IN=MIN(1D8,MAX(0.25D0,Q2))
+ SD=LOG(LOG(Q2IN/0.232D0**2)/LOG(0.25D0/0.232D0**2))
+ ENDIF
+ SD2=SD**2
+ XL=-LOG(X)
+ XS=SQRT(X)
+
+C...Evaluate valence, gluon and sea distributions.
+ XFVAL=(0.519D0+0.180D0*SD-0.011D0*SD2)*X**(0.499D0-0.027D0*SD)*
+ & (1D0+(0.381D0-0.419D0*SD)*XS)*(1D0-X)**(0.367D0+0.563D0*SD)
+ XFGLU=(X**(0.482D0+0.341D0*SQRT(SD))*((0.678D0+0.877D0*
+ & SD-0.175D0*SD2)+
+ & (0.338D0-1.597D0*SD)*XS+(-0.233D0*SD+0.406D0*SD2)*X)+
+ & SD**0.599D0*EXP(-(0.618D0+2.070D0*SD)+SQRT(3.676D0*SD**1.263D0*
+ & XL)))*
+ & (1D0-X)**(0.390D0+1.053D0*SD)
+ XFSEA=SD**0.55D0*(1D0-0.748D0*XS+(0.313D0+0.935D0*SD)*X)*(1D0-
+ & X)**3.359D0*
+ & EXP(-(4.433D0+1.301D0*SD)+SQRT((9.30D0-0.887D0*SD)*SD**0.56D0*
+ & XL))/
+ & XL**(2.538D0-0.763D0*SD)
+ IF(SD.LE.0.888D0) THEN
+ XFCHM=0D0
+ ELSE
+ XFCHM=(SD-0.888D0)**1.02D0*(1D0+1.008D0*X)*(1D0-X)**(1.208D0+
+ & 0.771D0*SD)*
+ & EXP(-(4.40D0+1.493D0*SD)+SQRT((2.032D0+1.901D0*SD)*SD**0.39D0*
+ & XL))
+ ENDIF
+ IF(SD.LE.1.351D0) THEN
+ XFBOT=0D0
+ ELSE
+ XFBOT=(SD-1.351D0)**1.03D0*(1D0-X)**(0.697D0+0.855D0*SD)*
+ & EXP(-(4.51D0+1.490D0*SD)+SQRT((3.056D0+1.694D0*SD)*SD**0.39D0*
+ & XL))
+ ENDIF
+
+C...Put into output array.
+ XPPI(0)=XFGLU
+ XPPI(1)=XFSEA
+ XPPI(2)=XFSEA
+ XPPI(3)=XFSEA
+ XPPI(4)=XFCHM
+ XPPI(5)=XFBOT
+ DO 130 KFL=1,5
+ XPPI(-KFL)=XPPI(KFL)
+ 130 CONTINUE
+ XPPI(2)=XPPI(2)+XFVAL
+ XPPI(-1)=XPPI(-1)+XFVAL
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPDPR
+C...Gives proton parton distributions according to a few different
+C...parametrizations.
+
+ SUBROUTINE PYPDPR(X,Q2,XPPR)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/
+C...Arrays and data.
+ DIMENSION XPPR(-6:6),Q2MIN(16)
+ DATA Q2MIN/ 2.56D0, 2.56D0, 2.56D0, 0.4D0, 0.4D0, 0.4D0,
+ &1.0D0, 1.0D0, 2*0D0, 0.25D0, 5D0, 5D0, 4D0, 4D0, 0D0/
+
+C...Reset output array.
+ DO 100 KFL=-6,6
+ XPPR(KFL)=0D0
+ 100 CONTINUE
+
+C...Common preliminaries.
+ NSET=MAX(1,MIN(16,MSTP(51)))
+ IF(NSET.EQ.9.OR.NSET.EQ.10) NSET=6
+ VINT(231)=Q2MIN(NSET)
+ IF(MSTP(57).EQ.0) THEN
+ Q2L=Q2MIN(NSET)
+ ELSE
+ Q2L=MAX(Q2MIN(NSET),Q2)
+ ENDIF
+
+ IF(NSET.GE.1.AND.NSET.LE.3) THEN
+C...Interface to the CTEQ 3 parton distributions.
+ QRT=SQRT(MAX(1D0,Q2L))
+
+C...Loop over flavours.
+ DO 110 I=-6,6
+ IF(I.LE.0) THEN
+ XPPR(I)=PYCTEQ(NSET,I,X,QRT)
+ ELSEIF(I.LE.2) THEN
+ XPPR(I)=PYCTEQ(NSET,I,X,QRT)+XPPR(-I)
+ ELSE
+ XPPR(I)=XPPR(-I)
+ ENDIF
+ 110 CONTINUE
+
+ ELSEIF(NSET.GE.4.AND.NSET.LE.6) THEN
+C...Interface to the GRV 94 distributions.
+ IF(NSET.EQ.4) THEN
+ CALL PYGRVL (X, Q2L, UV, DV, DEL, UDB, SB, CHM, BOT, GL)
+ ELSEIF(NSET.EQ.5) THEN
+ CALL PYGRVM (X, Q2L, UV, DV, DEL, UDB, SB, CHM, BOT, GL)
+ ELSE
+ CALL PYGRVD (X, Q2L, UV, DV, DEL, UDB, SB, CHM, BOT, GL)
+ ENDIF
+
+C...Put into output array.
+ XPPR(0)=GL
+ XPPR(-1)=0.5D0*(UDB+DEL)
+ XPPR(-2)=0.5D0*(UDB-DEL)
+ XPPR(-3)=SB
+ XPPR(-4)=CHM
+ XPPR(-5)=BOT
+ XPPR(1)=DV+XPPR(-1)
+ XPPR(2)=UV+XPPR(-2)
+ XPPR(3)=SB
+ XPPR(4)=CHM
+ XPPR(5)=BOT
+
+ ELSEIF(NSET.EQ.7) THEN
+C...Interface to the CTEQ 5L parton distributions.
+C...Range of validity 10^-6 < x < 1, 1 < Q < 10^4 extended by
+C...freezing x*f(x,Q2) at borders.
+ QRT=SQRT(MAX(1D0,MIN(1D8,Q2L)))
+ XIN=MAX(1D-6,MIN(1D0,X))
+
+C...Loop over flavours (with u <-> d notation mismatch).
+ SUMUDB=PYCT5L(-1,XIN,QRT)
+ RATUDB=PYCT5L(-2,XIN,QRT)
+ DO 120 I=-5,2
+ IF(I.EQ.1) THEN
+ XPPR(I)=XIN*PYCT5L(2,XIN,QRT)
+ ELSEIF(I.EQ.2) THEN
+ XPPR(I)=XIN*PYCT5L(1,XIN,QRT)
+ ELSEIF(I.EQ.-1) THEN
+ XPPR(I)=XIN*SUMUDB*RATUDB/(1D0+RATUDB)
+ ELSEIF(I.EQ.-2) THEN
+ XPPR(I)=XIN*SUMUDB/(1D0+RATUDB)
+ ELSE
+ XPPR(I)=XIN*PYCT5L(I,XIN,QRT)
+ IF(I.LT.0) XPPR(-I)=XPPR(I)
+ ENDIF
+ 120 CONTINUE
+
+ ELSEIF(NSET.EQ.8) THEN
+C...Interface to the CTEQ 5M1 parton distributions.
+ QRT=SQRT(MAX(1D0,MIN(1D8,Q2L)))
+ XIN=MAX(1D-6,MIN(1D0,X))
+
+C...Loop over flavours (with u <-> d notation mismatch).
+ SUMUDB=PYCT5M(-1,XIN,QRT)
+ RATUDB=PYCT5M(-2,XIN,QRT)
+ DO 130 I=-5,2
+ IF(I.EQ.1) THEN
+ XPPR(I)=XIN*PYCT5M(2,XIN,QRT)
+ ELSEIF(I.EQ.2) THEN
+ XPPR(I)=XIN*PYCT5M(1,XIN,QRT)
+ ELSEIF(I.EQ.-1) THEN
+ XPPR(I)=XIN*SUMUDB*RATUDB/(1D0+RATUDB)
+ ELSEIF(I.EQ.-2) THEN
+ XPPR(I)=XIN*SUMUDB/(1D0+RATUDB)
+ ELSE
+ XPPR(I)=XIN*PYCT5M(I,XIN,QRT)
+ IF(I.LT.0) XPPR(-I)=XPPR(I)
+ ENDIF
+ 130 CONTINUE
+
+ ELSEIF(NSET.GE.11.AND.NSET.LE.15) THEN
+C...GRV92LO, EHLQ1, EHLQ2, DO1 AND DO2 distributions:
+C...obsolete but offers backwards compatibility.
+ CALL PYPDPO(X,Q2L,XPPR)
+
+C...Symmetric choice for debugging only
+ ELSEIF(NSET.EQ.16) THEN
+ XPPR(0)=.5D0/X
+ XPPR(1)=.05D0/X
+ XPPR(2)=.05D0/X
+ XPPR(3)=.05D0/X
+ XPPR(4)=.05D0/X
+ XPPR(5)=.05D0/X
+ XPPR(-1)=.05D0/X
+ XPPR(-2)=.05D0/X
+ XPPR(-3)=.05D0/X
+ XPPR(-4)=.05D0/X
+ XPPR(-5)=.05D0/X
+
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCTEQ
+C...Gives the CTEQ 3 parton distribution function sets in
+C...parametrized form, of October 24, 1994.
+C...Authors: H.L. Lai, J. Botts, J. Huston, J.G. Morfin, J.F. Owens,
+C...J. Qiu, W.K. Tung and H. Weerts.
+
+ FUNCTION PYCTEQ (ISET, IPRT, X, Q)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...Data on Lambda values of fits, minimum Q and quark masses.
+ DIMENSION ALM(3), QMS(4:6)
+ DATA ALM / 0.177D0, 0.239D0, 0.247D0 /
+ DATA QMN / 1.60D0 /, (QMS(I), I=4,6) / 1.60D0, 5.00D0, 180.0D0 /
+
+C....Check flavour thresholds. Set up QI for SB.
+ IP = IABS(IPRT)
+ IF(IP .GE. 4) THEN
+ IF(Q .LE. QMS(IP)) THEN
+ PYCTEQ = 0D0
+ RETURN
+ ENDIF
+ QI = QMS(IP)
+ ELSE
+ QI = QMN
+ ENDIF
+
+C...Use "standard lambda" of parametrization program for expansion.
+ ALAM = ALM (ISET)
+ SBL = LOG(Q/ALAM) / LOG(QI/ALAM)
+ SB = LOG (SBL)
+ SB2 = SB*SB
+ SB3 = SB2*SB
+
+C...Expansion for CTEQ3L.
+ IF(ISET .EQ. 1) THEN
+ IF(IPRT .EQ. 2) THEN
+ A0=Exp( 0.1907D+00+0.4205D-01*SB +0.2752D+00*SB2-
+ & 0.3171D+00*SB3)
+ A1= 0.4611D+00+0.2331D-01*SB -0.3403D-01*SB2+0.3174D-01*SB3
+ A2= 0.3504D+01+0.5739D+00*SB +0.2676D+00*SB2-0.1553D+00*SB3
+ A3= 0.7452D+01-0.6742D+01*SB +0.2849D+01*SB2-0.1964D+00*SB3
+ A4= 0.1116D+01-0.3435D+00*SB +0.2865D+00*SB2-0.1288D+00*SB3
+ A5= 0.6659D-01+0.2714D+00*SB -0.2688D+00*SB2+0.2763D+00*SB3
+ ELSEIF(IPRT .EQ. 1) THEN
+ A0=Exp( 0.1141D+00+0.4764D+00*SB -0.1745D+01*SB2+
+ & 0.7728D+00*SB3)
+ A1= 0.4275D+00-0.1290D+00*SB +0.3609D+00*SB2-0.1689D+00*SB3
+ A2= 0.3000D+01+0.2946D+01*SB -0.4117D+01*SB2+0.1989D+01*SB3
+ A3=-0.1302D+01+0.2322D+01*SB -0.4258D+01*SB2+0.2109D+01*SB3
+ A4= 0.2586D+01-0.1920D+00*SB -0.3754D+00*SB2+0.2731D+00*SB3
+ A5=-0.2251D+00-0.5374D+00*SB +0.2245D+01*SB2-0.1034D+01*SB3
+ ELSEIF(IPRT .EQ. 0) THEN
+ A0=Exp(-0.7631D+00-0.7241D+00*SB -0.1170D+01*SB2+
+ & 0.5343D+00*SB3)
+ A1=-0.3573D+00+0.3469D+00*SB -0.3396D+00*SB2+0.9188D-01*SB3
+ A2= 0.5604D+01+0.7458D+00*SB -0.5082D+00*SB2+0.1844D+00*SB3
+ A3= 0.1549D+02-0.1809D+02*SB +0.1162D+02*SB2-0.3483D+01*SB3
+ A4= 0.9881D+00+0.1364D+00*SB -0.4421D+00*SB2+0.2051D+00*SB3
+ A5=-0.9505D-01+0.3259D+01*SB -0.1547D+01*SB2+0.2918D+00*SB3
+ ELSEIF(IPRT .EQ. -1) THEN
+ A0=Exp(-0.2449D+01-0.3513D+01*SB +0.4529D+01*SB2-
+ & 0.2031D+01*SB3)
+ A1=-0.4050D+00+0.3411D+00*SB -0.3669D+00*SB2+0.1109D+00*SB3
+ A2= 0.7470D+01-0.2982D+01*SB +0.5503D+01*SB2-0.2419D+01*SB3
+ A3= 0.1503D+02+0.1638D+01*SB -0.8772D+01*SB2+0.3852D+01*SB3
+ A4= 0.1137D+01-0.1006D+01*SB +0.1485D+01*SB2-0.6389D+00*SB3
+ A5=-0.5299D+00+0.3160D+01*SB -0.3104D+01*SB2+0.1219D+01*SB3
+ ELSEIF(IPRT .EQ. -2) THEN
+ A0=Exp(-0.2740D+01-0.7987D-01*SB -0.9015D+00*SB2-
+ & 0.9872D-01*SB3)
+ A1=-0.3909D+00+0.1244D+00*SB -0.4487D-01*SB2+0.1277D-01*SB3
+ A2= 0.9163D+01+0.2823D+00*SB -0.7720D+00*SB2-0.9360D-02*SB3
+ A3= 0.1080D+02-0.3915D+01*SB -0.1153D+01*SB2+0.2649D+01*SB3
+ A4= 0.9894D+00-0.1647D+00*SB -0.9426D-02*SB2+0.2945D-02*SB3
+ A5=-0.3395D+00+0.6998D+00*SB +0.7000D+00*SB2-0.6730D-01*SB3
+ ELSEIF(IPRT .EQ. -3) THEN
+ A0=Exp(-0.3640D+01+0.1250D+01*SB -0.2914D+01*SB2+
+ & 0.8390D+00*SB3)
+ A1=-0.3595D+00-0.5259D-01*SB +0.3122D+00*SB2-0.1642D+00*SB3
+ A2= 0.7305D+01+0.9727D+00*SB -0.9788D+00*SB2-0.5193D-01*SB3
+ A3= 0.1198D+02-0.1799D+02*SB +0.2614D+02*SB2-0.1091D+02*SB3
+ A4= 0.9882D+00-0.6101D+00*SB +0.9737D+00*SB2-0.4935D+00*SB3
+ A5=-0.1186D+00-0.3231D+00*SB +0.3074D+01*SB2-0.1274D+01*SB3
+ ELSEIF(IPRT .EQ. -4) THEN
+ A0=SB** 0.1122D+01*Exp(-0.3718D+01-0.1335D+01*SB +
+ & 0.1651D-01*SB2)
+ A1=-0.4719D+00+0.7509D+00*SB -0.8420D+00*SB2+0.2901D+00*SB3
+ A2= 0.6194D+01-0.1641D+01*SB +0.4907D+01*SB2-0.2523D+01*SB3
+ A3= 0.4426D+01-0.4270D+01*SB +0.6581D+01*SB2-0.3474D+01*SB3
+ A4= 0.2683D+00+0.9876D+00*SB -0.7612D+00*SB2+0.1780D+00*SB3
+ A5=-0.4547D+00+0.4410D+01*SB -0.3712D+01*SB2+0.1245D+01*SB3
+ ELSEIF(IPRT .EQ. -5) THEN
+ A0=SB** 0.9838D+00*Exp(-0.2548D+01-0.7660D+01*SB +
+ & 0.3702D+01*SB2)
+ A1=-0.3122D+00-0.2120D+00*SB +0.5716D+00*SB2-0.3773D+00*SB3
+ A2= 0.6257D+01-0.8214D-01*SB -0.2537D+01*SB2+0.2981D+01*SB3
+ A3=-0.6723D+00+0.2131D+01*SB +0.9599D+01*SB2-0.7910D+01*SB3
+ A4= 0.9169D-01+0.4295D-01*SB -0.5017D+00*SB2+0.3811D+00*SB3
+ A5= 0.2402D+00+0.2656D+01*SB -0.1586D+01*SB2+0.2880D+00*SB3
+ ELSEIF(IPRT .EQ. -6) THEN
+ A0=SB** 0.1001D+01*Exp(-0.6934D+01+0.3050D+01*SB -
+ & 0.6943D+00*SB2)
+ A1=-0.1713D+00-0.5167D+00*SB +0.1241D+01*SB2-0.1703D+01*SB3
+ A2= 0.6169D+01+0.3023D+01*SB -0.1972D+02*SB2+0.1069D+02*SB3
+ A3= 0.4439D+01-0.1746D+02*SB +0.1225D+02*SB2+0.8350D+00*SB3
+ A4= 0.5458D+00-0.4586D+00*SB +0.9089D+00*SB2-0.4049D+00*SB3
+ A5= 0.3207D+01-0.3362D+01*SB +0.5877D+01*SB2-0.7659D+01*SB3
+ ENDIF
+
+C...Expansion for CTEQ3M.
+ ELSEIF(ISET .EQ. 2) THEN
+ IF(IPRT .EQ. 2) THEN
+ A0=Exp( 0.2259D+00+0.1237D+00*SB +0.3035D+00*SB2-
+ & 0.2935D+00*SB3)
+ A1= 0.5085D+00+0.1651D-01*SB -0.3592D-01*SB2+0.2782D-01*SB3
+ A2= 0.3732D+01+0.4901D+00*SB +0.2218D+00*SB2-0.1116D+00*SB3
+ A3= 0.7011D+01-0.6620D+01*SB +0.2557D+01*SB2-0.1360D+00*SB3
+ A4= 0.8969D+00-0.2429D+00*SB +0.1811D+00*SB2-0.6888D-01*SB3
+ A5= 0.8636D-01+0.2558D+00*SB -0.3082D+00*SB2+0.2535D+00*SB3
+ ELSEIF(IPRT .EQ. 1) THEN
+ A0=Exp(-0.7266D+00-0.1584D+01*SB +0.1259D+01*SB2-
+ & 0.4305D-01*SB3)
+ A1= 0.5285D+00-0.3721D+00*SB +0.5150D+00*SB2-0.1697D+00*SB3
+ A2= 0.4075D+01+0.8282D+00*SB -0.4496D+00*SB2+0.2107D+00*SB3
+ A3= 0.3279D+01+0.5066D+01*SB -0.9134D+01*SB2+0.2897D+01*SB3
+ A4= 0.4399D+00-0.5888D+00*SB +0.4802D+00*SB2-0.1664D+00*SB3
+ A5= 0.3678D+00-0.8929D+00*SB +0.1592D+01*SB2-0.5713D+00*SB3
+ ELSEIF(IPRT .EQ. 0) THEN
+ A0=Exp(-0.2318D+00-0.9779D+00*SB -0.3783D+00*SB2+
+ & 0.1037D-01*SB3)
+ A1=-0.2916D+00+0.1754D+00*SB -0.1884D+00*SB2+0.6116D-01*SB3
+ A2= 0.5349D+01+0.7460D+00*SB +0.2319D+00*SB2-0.2622D+00*SB3
+ A3= 0.6920D+01-0.3454D+01*SB +0.2027D+01*SB2-0.7626D+00*SB3
+ A4= 0.1013D+01+0.1423D+00*SB -0.1798D+00*SB2+0.1872D-01*SB3
+ A5=-0.5465D-01+0.2303D+01*SB -0.9584D+00*SB2+0.3098D+00*SB3
+ ELSEIF(IPRT .EQ. -1) THEN
+ A0=Exp(-0.2328D+01-0.3061D+01*SB +0.3620D+01*SB2-
+ & 0.1602D+01*SB3)
+ A1=-0.3358D+00+0.3198D+00*SB -0.4210D+00*SB2+0.1571D+00*SB3
+ A2= 0.8478D+01-0.3112D+01*SB +0.5243D+01*SB2-0.2255D+01*SB3
+ A3= 0.1971D+02+0.3389D+00*SB -0.5268D+01*SB2+0.2099D+01*SB3
+ A4= 0.1128D+01-0.4701D+00*SB +0.7779D+00*SB2-0.3506D+00*SB3
+ A5=-0.4708D+00+0.3341D+01*SB -0.3375D+01*SB2+0.1353D+01*SB3
+ ELSEIF(IPRT .EQ. -2) THEN
+ A0=Exp(-0.2906D+01-0.1069D+00*SB -0.1055D+01*SB2+
+ & 0.2496D+00*SB3)
+ A1=-0.2875D+00+0.6571D-01*SB -0.1987D-01*SB2-0.1800D-02*SB3
+ A2= 0.9854D+01-0.2715D+00*SB -0.7407D+00*SB2+0.2888D+00*SB3
+ A3= 0.1583D+02-0.7687D+01*SB +0.3428D+01*SB2-0.3327D+00*SB3
+ A4= 0.9763D+00+0.7599D-01*SB -0.2128D+00*SB2+0.6852D-01*SB3
+ A5=-0.8444D-02+0.9434D+00*SB +0.4152D+00*SB2-0.1481D+00*SB3
+ ELSEIF(IPRT .EQ. -3) THEN
+ A0=Exp(-0.3780D+01+0.2499D+01*SB -0.4962D+01*SB2+
+ & 0.1936D+01*SB3)
+ A1=-0.2639D+00-0.1575D+00*SB +0.3584D+00*SB2-0.1646D+00*SB3
+ A2= 0.8082D+01+0.2794D+01*SB -0.5438D+01*SB2+0.2321D+01*SB3
+ A3= 0.1811D+02-0.2000D+02*SB +0.1951D+02*SB2-0.6904D+01*SB3
+ A4= 0.9822D+00+0.4972D+00*SB -0.8690D+00*SB2+0.3415D+00*SB3
+ A5= 0.1772D+00-0.6078D+00*SB +0.3341D+01*SB2-0.1473D+01*SB3
+ ELSEIF(IPRT .EQ. -4) THEN
+ A0=SB** 0.1122D+01*Exp(-0.4232D+01-0.1808D+01*SB +
+ & 0.5348D+00*SB2)
+ A1=-0.2824D+00+0.5846D+00*SB -0.7230D+00*SB2+0.2419D+00*SB3
+ A2= 0.5683D+01-0.2948D+01*SB +0.5916D+01*SB2-0.2560D+01*SB3
+ A3= 0.2051D+01+0.4795D+01*SB -0.4271D+01*SB2+0.4174D+00*SB3
+ A4= 0.1737D+00+0.1717D+01*SB -0.1978D+01*SB2+0.6643D+00*SB3
+ A5= 0.8689D+00+0.3500D+01*SB -0.3283D+01*SB2+0.1026D+01*SB3
+ ELSEIF(IPRT .EQ. -5) THEN
+ A0=SB** 0.9906D+00*Exp(-0.1496D+01-0.6576D+01*SB +
+ & 0.1569D+01*SB2)
+ A1=-0.2140D+00-0.6419D-01*SB -0.2741D-02*SB2+0.3185D-02*SB3
+ A2= 0.5781D+01+0.1049D+00*SB -0.3930D+00*SB2+0.5174D+00*SB3
+ A3=-0.9420D+00+0.5511D+00*SB +0.8817D+00*SB2+0.1903D+01*SB3
+ A4= 0.2418D-01+0.4232D-01*SB -0.1244D-01*SB2-0.2365D-01*SB3
+ A5= 0.7664D+00+0.1794D+01*SB -0.4917D+00*SB2-0.1284D+00*SB3
+ ELSEIF(IPRT .EQ. -6) THEN
+ A0=SB** 0.1000D+01*Exp(-0.8460D+01+0.1154D+01*SB +
+ & 0.8838D+01*SB2)
+ A1=-0.4316D-01-0.2976D+00*SB +0.3174D+00*SB2-0.1429D+01*SB3
+ A2= 0.4910D+01+0.2273D+01*SB +0.5631D+01*SB2-0.1994D+02*SB3
+ A3= 0.1190D+02-0.2000D+02*SB -0.2000D+02*SB2+0.1292D+02*SB3
+ A4= 0.5771D+00-0.2552D+00*SB +0.7510D+00*SB2+0.6923D+00*SB3
+ A5= 0.4402D+01-0.1627D+01*SB -0.2085D+01*SB2-0.6737D+01*SB3
+ ENDIF
+
+C...Expansion for CTEQ3D.
+ ELSEIF(ISET .EQ. 3) THEN
+ IF(IPRT .EQ. 2) THEN
+ A0=Exp( 0.2148D+00+0.5814D-01*SB +0.2734D+00*SB2-
+ & 0.2902D+00*SB3)
+ A1= 0.4810D+00+0.1657D-01*SB -0.3800D-01*SB2+0.3125D-01*SB3
+ A2= 0.3509D+01+0.3923D+00*SB +0.4010D+00*SB2-0.1932D+00*SB3
+ A3= 0.7055D+01-0.6552D+01*SB +0.3466D+01*SB2-0.5657D+00*SB3
+ A4= 0.1061D+01-0.3453D+00*SB +0.4089D+00*SB2-0.1817D+00*SB3
+ A5= 0.8687D-01+0.2548D+00*SB -0.2967D+00*SB2+0.2647D+00*SB3
+ ELSEIF(IPRT .EQ. 1) THEN
+ A0=Exp( 0.3961D+00+0.4914D+00*SB -0.1728D+01*SB2+
+ & 0.7257D+00*SB3)
+ A1= 0.4162D+00-0.1419D+00*SB +0.3680D+00*SB2-0.1618D+00*SB3
+ A2= 0.3248D+01+0.3028D+01*SB -0.4307D+01*SB2+0.1920D+01*SB3
+ A3=-0.1100D+01+0.2184D+01*SB -0.3820D+01*SB2+0.1717D+01*SB3
+ A4= 0.2082D+01-0.2756D+00*SB +0.3043D+00*SB2-0.1260D+00*SB3
+ A5=-0.4822D+00-0.5706D+00*SB +0.2243D+01*SB2-0.9760D+00*SB3
+ ELSEIF(IPRT .EQ. 0) THEN
+ A0=Exp(-0.4665D+00-0.7554D+00*SB -0.3323D+00*SB2-
+ & 0.2734D-04*SB3)
+ A1=-0.3359D+00+0.2395D+00*SB -0.2377D+00*SB2+0.7059D-01*SB3
+ A2= 0.5451D+01+0.6086D+00*SB +0.8606D-01*SB2-0.1425D+00*SB3
+ A3= 0.1026D+02-0.9352D+01*SB +0.4879D+01*SB2-0.1150D+01*SB3
+ A4= 0.9935D+00-0.5017D-01*SB -0.1707D-01*SB2-0.1464D-02*SB3
+ A5=-0.4160D-01+0.2305D+01*SB -0.1063D+01*SB2+0.3211D+00*SB3
+ ELSEIF(IPRT .EQ. -1) THEN
+ A0=Exp(-0.2714D+01-0.2868D+01*SB +0.3700D+01*SB2-
+ & 0.1671D+01*SB3)
+ A1=-0.3893D+00+0.3341D+00*SB -0.3897D+00*SB2+0.1420D+00*SB3
+ A2= 0.8359D+01-0.3267D+01*SB +0.5327D+01*SB2-0.2245D+01*SB3
+ A3= 0.2359D+02-0.5669D+01*SB -0.4602D+01*SB2+0.3153D+01*SB3
+ A4= 0.1106D+01-0.4745D+00*SB +0.7739D+00*SB2-0.3417D+00*SB3
+ A5=-0.5557D+00+0.3433D+01*SB -0.3390D+01*SB2+0.1354D+01*SB3
+ ELSEIF(IPRT .EQ. -2) THEN
+ A0=Exp(-0.3323D+01+0.2296D+00*SB -0.1109D+01*SB2+
+ & 0.2223D+00*SB3)
+ A1=-0.3410D+00+0.8847D-01*SB -0.1111D-01*SB2-0.5927D-02*SB3
+ A2= 0.9753D+01-0.5182D+00*SB -0.4670D+00*SB2+0.1921D+00*SB3
+ A3= 0.1977D+02-0.1600D+02*SB +0.9481D+01*SB2-0.1864D+01*SB3
+ A4= 0.9818D+00+0.2839D-02*SB -0.1188D+00*SB2+0.3584D-01*SB3
+ A5=-0.7934D-01+0.1004D+01*SB +0.3704D+00*SB2-0.1220D+00*SB3
+ ELSEIF(IPRT .EQ. -3) THEN
+ A0=Exp(-0.3985D+01+0.2855D+01*SB -0.5208D+01*SB2+
+ & 0.1937D+01*SB3)
+ A1=-0.3337D+00-0.1150D+00*SB +0.3691D+00*SB2-0.1709D+00*SB3
+ A2= 0.7968D+01+0.3641D+01*SB -0.6599D+01*SB2+0.2642D+01*SB3
+ A3= 0.1873D+02-0.1999D+02*SB +0.1734D+02*SB2-0.5813D+01*SB3
+ A4= 0.9731D+00+0.5082D+00*SB -0.8780D+00*SB2+0.3231D+00*SB3
+ A5=-0.5542D-01-0.4189D+00*SB +0.3309D+01*SB2-0.1439D+01*SB3
+ ELSEIF(IPRT .EQ. -4) THEN
+ A0=SB** 0.1105D+01*Exp(-0.3952D+01-0.1901D+01*SB +
+ & 0.5137D+00*SB2)
+ A1=-0.3543D+00+0.6055D+00*SB -0.6941D+00*SB2+0.2278D+00*SB3
+ A2= 0.5955D+01-0.2629D+01*SB +0.5337D+01*SB2-0.2300D+01*SB3
+ A3= 0.1933D+01+0.4882D+01*SB -0.3810D+01*SB2+0.2290D+00*SB3
+ A4= 0.1806D+00+0.1655D+01*SB -0.1893D+01*SB2+0.6395D+00*SB3
+ A5= 0.4790D+00+0.3612D+01*SB -0.3152D+01*SB2+0.9684D+00*SB3
+ ELSEIF(IPRT .EQ. -5) THEN
+ A0=SB** 0.9818D+00*Exp(-0.1825D+01-0.7464D+01*SB +
+ & 0.2143D+01*SB2)
+ A1=-0.2604D+00-0.1400D+00*SB +0.1702D+00*SB2-0.8476D-01*SB3
+ A2= 0.6005D+01+0.6275D+00*SB -0.2535D+01*SB2+0.2219D+01*SB3
+ A3=-0.9067D+00+0.1149D+01*SB +0.1974D+01*SB2+0.4716D+01*SB3
+ A4= 0.3915D-01+0.5945D-01*SB -0.9844D-01*SB2+0.2783D-01*SB3
+ A5= 0.5500D+00+0.1994D+01*SB -0.6727D+00*SB2-0.1510D+00*SB3
+ ELSEIF(IPRT .EQ. -6) THEN
+ A0=SB** 0.1002D+01*Exp(-0.8553D+01+0.3793D+00*SB +
+ & 0.9998D+01*SB2)
+ A1=-0.5870D-01-0.2792D+00*SB +0.6526D+00*SB2-0.1984D+01*SB3
+ A2= 0.4716D+01+0.4473D+00*SB +0.1128D+02*SB2-0.1937D+02*SB3
+ A3= 0.1289D+02-0.1742D+02*SB -0.1983D+02*SB2-0.9274D+00*SB3
+ A4= 0.5647D+00-0.2732D+00*SB +0.1074D+01*SB2+0.5981D+00*SB3
+ A5= 0.4390D+01-0.1262D+01*SB -0.9026D+00*SB2-0.9394D+01*SB3
+ ENDIF
+ ENDIF
+
+C...Calculation of x * f(x, Q).
+ PYCTEQ = MAX(0D0, A0 *(X**A1) *((1D0-X)**A2) *(1D0+A3*(X**A4))
+ & *(LOG(1D0+1D0/X))**A5 )
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGRVL
+C...Gives the GRV 94 L (leading order) parton distribution function set
+C...in parametrized form.
+C...Authors: M. Glueck, E. Reya and A. Vogt.
+
+ SUBROUTINE PYGRVL (X, Q2, UV, DV, DEL, UDB, SB, CHM, BOT, GL)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION (A - Z)
+
+C...Common expressions.
+ MU2 = 0.23D0
+ LAM2 = 0.2322D0 * 0.2322D0
+ S = LOG (LOG(Q2/LAM2) / LOG(MU2/LAM2))
+ DS = SQRT (S)
+ S2 = S * S
+ S3 = S2 * S
+
+C...uv :
+ NU = 2.284D0 + 0.802D0 * S + 0.055D0 * S2
+ AKU = 0.590D0 - 0.024D0 * S
+ BKU = 0.131D0 + 0.063D0 * S
+ AU = -0.449D0 - 0.138D0 * S - 0.076D0 * S2
+ BU = 0.213D0 + 2.669D0 * S - 0.728D0 * S2
+ CU = 8.854D0 - 9.135D0 * S + 1.979D0 * S2
+ DU = 2.997D0 + 0.753D0 * S - 0.076D0 * S2
+ UV = PYGRVV (X, NU, AKU, BKU, AU, BU, CU, DU)
+
+C...dv :
+ ND = 0.371D0 + 0.083D0 * S + 0.039D0 * S2
+ AKD = 0.376D0
+ BKD = 0.486D0 + 0.062D0 * S
+ AD = -0.509D0 + 3.310D0 * S - 1.248D0 * S2
+ BD = 12.41D0 - 10.52D0 * S + 2.267D0 * S2
+ CD = 6.373D0 - 6.208D0 * S + 1.418D0 * S2
+ DD = 3.691D0 + 0.799D0 * S - 0.071D0 * S2
+ DV = PYGRVV (X, ND, AKD, BKD, AD, BD, CD, DD)
+
+C...del :
+ NE = 0.082D0 + 0.014D0 * S + 0.008D0 * S2
+ AKE = 0.409D0 - 0.005D0 * S
+ BKE = 0.799D0 + 0.071D0 * S
+ AE = -38.07D0 + 36.13D0 * S - 0.656D0 * S2
+ BE = 90.31D0 - 74.15D0 * S + 7.645D0 * S2
+ CE = 0.0D0
+ DE = 7.486D0 + 1.217D0 * S - 0.159D0 * S2
+ DEL = PYGRVV (X, NE, AKE, BKE, AE, BE, CE, DE)
+
+C...udb :
+ ALX = 1.451D0
+ BEX = 0.271D0
+ AKX = 0.410D0 - 0.232D0 * S
+ BKX = 0.534D0 - 0.457D0 * S
+ AGX = 0.890D0 - 0.140D0 * S
+ BGX = -0.981D0
+ CX = 0.320D0 + 0.683D0 * S
+ DX = 4.752D0 + 1.164D0 * S + 0.286D0 * S2
+ EX = 4.119D0 + 1.713D0 * S
+ ESX = 0.682D0 + 2.978D0 * S
+ UDB = PYGRVW (X, S, ALX, BEX, AKX, BKX, AGX, BGX, CX,
+ & DX, EX, ESX)
+
+C...sb :
+ STS = 0D0
+ ALS = 0.914D0
+ BES = 0.577D0
+ AKS = 1.798D0 - 0.596D0 * S
+ AS = -5.548D0 + 3.669D0 * DS - 0.616D0 * S
+ BS = 18.92D0 - 16.73D0 * DS + 5.168D0 * S
+ DST = 6.379D0 - 0.350D0 * S + 0.142D0 * S2
+ EST = 3.981D0 + 1.638D0 * S
+ ESS = 6.402D0
+ SB = PYGRVS (X, S, STS, ALS, BES, AKS, AS, BS, DST, EST, ESS)
+
+C...cb :
+ STC = 0.888D0
+ ALC = 1.01D0
+ BEC = 0.37D0
+ AKC = 0D0
+ AC = 0D0
+ BC = 4.24D0 - 0.804D0 * S
+ DCT = 3.46D0 - 1.076D0 * S
+ ECT = 4.61D0 + 1.49D0 * S
+ ESC = 2.555D0 + 1.961D0 * S
+ CHM = PYGRVS (X, S, STC, ALC, BEC, AKC, AC, BC, DCT, ECT, ESC)
+
+C...bb :
+ STB = 1.351D0
+ ALB = 1.00D0
+ BEB = 0.51D0
+ AKB = 0D0
+ AB = 0D0
+ BB = 1.848D0
+ DBT = 2.929D0 + 1.396D0 * S
+ EBT = 4.71D0 + 1.514D0 * S
+ ESB = 4.02D0 + 1.239D0 * S
+ BOT = PYGRVS (X, S, STB, ALB, BEB, AKB, AB, BB, DBT, EBT, ESB)
+
+C...gl :
+ ALG = 0.524D0
+ BEG = 1.088D0
+ AKG = 1.742D0 - 0.930D0 * S
+ BKG = - 0.399D0 * S2
+ AG = 7.486D0 - 2.185D0 * S
+ BG = 16.69D0 - 22.74D0 * S + 5.779D0 * S2
+ CG = -25.59D0 + 29.71D0 * S - 7.296D0 * S2
+ DG = 2.792D0 + 2.215D0 * S + 0.422D0 * S2 - 0.104D0 * S3
+ EG = 0.807D0 + 2.005D0 * S
+ ESG = 3.841D0 + 0.316D0 * S
+ GL = PYGRVW (X, S, ALG, BEG, AKG, BKG, AG, BG, CG,
+ & DG, EG, ESG)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGRVM
+C...Gives the GRV 94 M (MSbar) parton distribution function set
+C...in parametrized form.
+C...Authors: M. Glueck, E. Reya and A. Vogt.
+
+ SUBROUTINE PYGRVM (X, Q2, UV, DV, DEL, UDB, SB, CHM, BOT, GL)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION (A - Z)
+
+C...Common expressions.
+ MU2 = 0.34D0
+ LAM2 = 0.248D0 * 0.248D0
+ S = LOG (LOG(Q2/LAM2) / LOG(MU2/LAM2))
+ DS = SQRT (S)
+ S2 = S * S
+ S3 = S2 * S
+
+C...uv :
+ NU = 1.304D0 + 0.863D0 * S
+ AKU = 0.558D0 - 0.020D0 * S
+ BKU = 0.183D0 * S
+ AU = -0.113D0 + 0.283D0 * S - 0.321D0 * S2
+ BU = 6.843D0 - 5.089D0 * S + 2.647D0 * S2 - 0.527D0 * S3
+ CU = 7.771D0 - 10.09D0 * S + 2.630D0 * S2
+ DU = 3.315D0 + 1.145D0 * S - 0.583D0 * S2 + 0.154D0 * S3
+ UV = PYGRVV (X, NU, AKU, BKU, AU, BU, CU, DU)
+
+C...dv :
+ ND = 0.102D0 - 0.017D0 * S + 0.005D0 * S2
+ AKD = 0.270D0 - 0.019D0 * S
+ BKD = 0.260D0
+ AD = 2.393D0 + 6.228D0 * S - 0.881D0 * S2
+ BD = 46.06D0 + 4.673D0 * S - 14.98D0 * S2 + 1.331D0 * S3
+ CD = 17.83D0 - 53.47D0 * S + 21.24D0 * S2
+ DD = 4.081D0 + 0.976D0 * S - 0.485D0 * S2 + 0.152D0 * S3
+ DV = PYGRVV (X, ND, AKD, BKD, AD, BD, CD, DD)
+
+C...del :
+ NE = 0.070D0 + 0.042D0 * S - 0.011D0 * S2 + 0.004D0 * S3
+ AKE = 0.409D0 - 0.007D0 * S
+ BKE = 0.782D0 + 0.082D0 * S
+ AE = -29.65D0 + 26.49D0 * S + 5.429D0 * S2
+ BE = 90.20D0 - 74.97D0 * S + 4.526D0 * S2
+ CE = 0.0D0
+ DE = 8.122D0 + 2.120D0 * S - 1.088D0 * S2 + 0.231D0 * S3
+ DEL = PYGRVV (X, NE, AKE, BKE, AE, BE, CE, DE)
+
+C...udb :
+ ALX = 0.877D0
+ BEX = 0.561D0
+ AKX = 0.275D0
+ BKX = 0.0D0
+ AGX = 0.997D0
+ BGX = 3.210D0 - 1.866D0 * S
+ CX = 7.300D0
+ DX = 9.010D0 + 0.896D0 * DS + 0.222D0 * S2
+ EX = 3.077D0 + 1.446D0 * S
+ ESX = 3.173D0 - 2.445D0 * DS + 2.207D0 * S
+ UDB = PYGRVW (X, S, ALX, BEX, AKX, BKX, AGX, BGX, CX,
+ & DX, EX, ESX)
+
+C...sb :
+ STS = 0D0
+ ALS = 0.756D0
+ BES = 0.216D0
+ AKS = 1.690D0 + 0.650D0 * DS - 0.922D0 * S
+ AS = -4.329D0 + 1.131D0 * S
+ BS = 9.568D0 - 1.744D0 * S
+ DST = 9.377D0 + 1.088D0 * DS - 1.320D0 * S + 0.130D0 * S2
+ EST = 3.031D0 + 1.639D0 * S
+ ESS = 5.837D0 + 0.815D0 * S
+ SB = PYGRVS (X, S, STS, ALS, BES, AKS, AS, BS, DST, EST, ESS)
+
+C...cb :
+ STC = 0.820D0
+ ALC = 0.98D0
+ BEC = 0D0
+ AKC = -0.625D0 - 0.523D0 * S
+ AC = 0D0
+ BC = 1.896D0 + 1.616D0 * S
+ DCT = 4.12D0 + 0.683D0 * S
+ ECT = 4.36D0 + 1.328D0 * S
+ ESC = 0.677D0 + 0.679D0 * S
+ CHM = PYGRVS (X, S, STC, ALC, BEC, AKC, AC, BC, DCT, ECT, ESC)
+
+C...bb :
+ STB = 1.297D0
+ ALB = 0.99D0
+ BEB = 0D0
+ AKB = - 0.193D0 * S
+ AB = 0D0
+ BB = 0D0
+ DBT = 3.447D0 + 0.927D0 * S
+ EBT = 4.68D0 + 1.259D0 * S
+ ESB = 1.892D0 + 2.199D0 * S
+ BOT = PYGRVS (X, S, STB, ALB, BEB, AKB, AB, BB, DBT, EBT, ESB)
+
+C...gl :
+ ALG = 1.014D0
+ BEG = 1.738D0
+ AKG = 1.724D0 + 0.157D0 * S
+ BKG = 0.800D0 + 1.016D0 * S
+ AG = 7.517D0 - 2.547D0 * S
+ BG = 34.09D0 - 52.21D0 * DS + 17.47D0 * S
+ CG = 4.039D0 + 1.491D0 * S
+ DG = 3.404D0 + 0.830D0 * S
+ EG = -1.112D0 + 3.438D0 * S - 0.302D0 * S2
+ ESG = 3.256D0 - 0.436D0 * S
+ GL = PYGRVW (X, S, ALG, BEG, AKG, BKG, AG, BG, CG, DG, EG, ESG)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGRVD
+C...Gives the GRV 94 D (DIS) parton distribution function set
+C...in parametrized form.
+C...Authors: M. Glueck, E. Reya and A. Vogt.
+
+ SUBROUTINE PYGRVD (X, Q2, UV, DV, DEL, UDB, SB, CHM, BOT, GL)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION (A - Z)
+
+C...Common expressions.
+ MU2 = 0.34D0
+ LAM2 = 0.248D0 * 0.248D0
+ S = LOG (LOG(Q2/LAM2) / LOG(MU2/LAM2))
+ DS = SQRT (S)
+ S2 = S * S
+ S3 = S2 * S
+
+C...uv :
+ NU = 2.484D0 + 0.116D0 * S + 0.093D0 * S2
+ AKU = 0.563D0 - 0.025D0 * S
+ BKU = 0.054D0 + 0.154D0 * S
+ AU = -0.326D0 - 0.058D0 * S - 0.135D0 * S2
+ BU = -3.322D0 + 8.259D0 * S - 3.119D0 * S2 + 0.291D0 * S3
+ CU = 11.52D0 - 12.99D0 * S + 3.161D0 * S2
+ DU = 2.808D0 + 1.400D0 * S - 0.557D0 * S2 + 0.119D0 * S3
+ UV = PYGRVV (X, NU, AKU, BKU, AU, BU, CU, DU)
+
+C...dv :
+ ND = 0.156D0 - 0.017D0 * S
+ AKD = 0.299D0 - 0.022D0 * S
+ BKD = 0.259D0 - 0.015D0 * S
+ AD = 3.445D0 + 1.278D0 * S + 0.326D0 * S2
+ BD = -6.934D0 + 37.45D0 * S - 18.95D0 * S2 + 1.463D0 * S3
+ CD = 55.45D0 - 69.92D0 * S + 20.78D0 * S2
+ DD = 3.577D0 + 1.441D0 * S - 0.683D0 * S2 + 0.179D0 * S3
+ DV = PYGRVV (X, ND, AKD, BKD, AD, BD, CD, DD)
+
+C...del :
+ NE = 0.099D0 + 0.019D0 * S + 0.002D0 * S2
+ AKE = 0.419D0 - 0.013D0 * S
+ BKE = 1.064D0 - 0.038D0 * S
+ AE = -44.00D0 + 98.70D0 * S - 14.79D0 * S2
+ BE = 28.59D0 - 40.94D0 * S - 13.66D0 * S2 + 2.523D0 * S3
+ CE = 84.57D0 - 108.8D0 * S + 31.52D0 * S2
+ DE = 7.469D0 + 2.480D0 * S - 0.866D0 * S2
+ DEL = PYGRVV (X, NE, AKE, BKE, AE, BE, CE, DE)
+
+C...udb :
+ ALX = 1.215D0
+ BEX = 0.466D0
+ AKX = 0.326D0 + 0.150D0 * S
+ BKX = 0.956D0 + 0.405D0 * S
+ AGX = 0.272D0
+ BGX = 3.794D0 - 2.359D0 * DS
+ CX = 2.014D0
+ DX = 7.941D0 + 0.534D0 * DS - 0.940D0 * S + 0.410D0 * S2
+ EX = 3.049D0 + 1.597D0 * S
+ ESX = 4.396D0 - 4.594D0 * DS + 3.268D0 * S
+ UDB = PYGRVW (X, S, ALX, BEX, AKX, BKX, AGX, BGX, CX,
+ & DX, EX, ESX)
+
+C...sb :
+ STS = 0D0
+ ALS = 0.175D0
+ BES = 0.344D0
+ AKS = 1.415D0 - 0.641D0 * DS
+ AS = 0.580D0 - 9.763D0 * DS + 6.795D0 * S - 0.558D0 * S2
+ BS = 5.617D0 + 5.709D0 * DS - 3.972D0 * S
+ DST = 13.78D0 - 9.581D0 * S + 5.370D0 * S2 - 0.996D0 * S3
+ EST = 4.546D0 + 0.372D0 * S2
+ ESS = 5.053D0 - 1.070D0 * S + 0.805D0 * S2
+ SB = PYGRVS (X, S, STS, ALS, BES, AKS, AS, BS, DST, EST, ESS)
+
+C...cb :
+ STC = 0.820D0
+ ALC = 0.98D0
+ BEC = 0D0
+ AKC = -0.625D0 - 0.523D0 * S
+ AC = 0D0
+ BC = 1.896D0 + 1.616D0 * S
+ DCT = 4.12D0 + 0.683D0 * S
+ ECT = 4.36D0 + 1.328D0 * S
+ ESC = 0.677D0 + 0.679D0 * S
+ CHM = PYGRVS (X, S, STC, ALC, BEC, AKC, AC, BC, DCT, ECT, ESC)
+
+C...bb :
+ STB = 1.297D0
+ ALB = 0.99D0
+ BEB = 0D0
+ AKB = - 0.193D0 * S
+ AB = 0D0
+ BB = 0D0
+ DBT = 3.447D0 + 0.927D0 * S
+ EBT = 4.68D0 + 1.259D0 * S
+ ESB = 1.892D0 + 2.199D0 * S
+ BOT = PYGRVS (X, S, STB, ALB, BEB, AKB, AB, BB, DBT, EBT, ESB)
+
+C...gl :
+ ALG = 1.258D0
+ BEG = 1.846D0
+ AKG = 2.423D0
+ BKG = 2.427D0 + 1.311D0 * S - 0.153D0 * S2
+ AG = 25.09D0 - 7.935D0 * S
+ BG = -14.84D0 - 124.3D0 * DS + 72.18D0 * S
+ CG = 590.3D0 - 173.8D0 * S
+ DG = 5.196D0 + 1.857D0 * S
+ EG = -1.648D0 + 3.988D0 * S - 0.432D0 * S2
+ ESG = 3.232D0 - 0.542D0 * S
+ GL = PYGRVW (X, S, ALG, BEG, AKG, BKG, AG, BG, CG, DG, EG, ESG)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGRVV
+C...Auxiliary for the GRV 94 parton distribution functions
+C...for u and d valence and d-u sea.
+C...Authors: M. Glueck, E. Reya and A. Vogt.
+
+ FUNCTION PYGRVV (X, N, AK, BK, A, B, C, D)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION (A - Z)
+
+C...Evaluation.
+ DX = SQRT (X)
+ PYGRVV = N * X**AK * (1D0+ A*X**BK + X * (B + C*DX)) *
+ & (1D0- X)**D
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGRVW
+C...Auxiliary for the GRV 94 parton distribution functions
+C...for d+u sea and gluon.
+C...Authors: M. Glueck, E. Reya and A. Vogt.
+
+ FUNCTION PYGRVW (X, S, AL, BE, AK, BK, A, B, C, D, E, ES)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION (A - Z)
+
+C...Evaluation.
+ LX = LOG (1D0/X)
+ PYGRVW = (X**AK * (A + X * (B + X*C)) * LX**BK + S**AL
+ & * EXP (-E + SQRT (ES * S**BE * LX))) * (1D0- X)**D
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGRVS
+C...Auxiliary for the GRV 94 parton distribution functions
+C...for s, c and b sea.
+C...Authors: M. Glueck, E. Reya and A. Vogt.
+
+ FUNCTION PYGRVS (X, S, STH, AL, BE, AK, AG, B, D, E, ES)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION (A - Z)
+
+C...Evaluation.
+ IF(S.LE.STH) THEN
+ PYGRVS = 0D0
+ ELSE
+ DX = SQRT (X)
+ LX = LOG (1D0/X)
+ PYGRVS = (S - STH)**AL / LX**AK * (1D0+ AG*DX + B*X) *
+ & (1D0- X)**D * EXP (-E + SQRT (ES * S**BE * LX))
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCT5L
+C...Auxiliary function for parametrization of CTEQ5L.
+C...Author: J. Pumplin 9/99.
+
+C...CTEQ5M1 and CTEQ5L Parton Distribution Functions
+C...in Parametrized Form
+C... September 15, 1999
+C
+C...Ref: "GLOBAL QCD ANALYSIS OF PARTON STRUCTURE OF THE NUCLEON:
+C... CTEQ5 PPARTON DISTRIBUTIONS"
+C...hep-ph/9903282
+
+C...The CTEQ5M1 set given here is an updated version of the original
+C...CTEQ5M set posted, in the table version, on the Web page of CTEQ.
+C...The differences between CTEQ5M and CTEQ5M1 are insignificant for
+C...almost all applications.
+C...The improvement is in the QCD evolution which is now more
+C...accurate, and which agrees completely with the benchmark work
+C...of the HERA 96/97 Workshop.
+C...The differences between the parametrized and the corresponding
+C...table versions (on which it is based) are of similar order as
+C...between the two version.
+
+C...!! Because accurate parametrizations over a wide range of (x,Q)
+C...is hard to obtain, only the most widely used sets CTEQ5M and
+C...CTEQ5L are available in parametrized form for now.
+
+C...These parametrizations were obtained by Jon Pumplin.
+
+C Iset PDF Description Alpha_s(Mz) Lam4 Lam5
+C -------------------------------------------------------------------
+C 1 CTEQ5M1 Standard NLO MSbar scheme 0.118 326 226
+C 3 CTEQ5L Leading Order 0.127 192 146
+C -------------------------------------------------------------------
+C...Note the Qcd-lambda values given for CTEQ5L is for the leading
+C...order form of Alpha_s!! Alpha_s(Mz) gives the absolute
+C...calibration.
+
+C...The two Iset value are adopted to agree with the standard table
+C...versions.
+
+C...Range of validity:
+C...The range of (x, Q) covered by this parametrization of the QCD
+C...evolved parton distributions is 1E-6 < x < 1 ;
+C...1.1 GeV < Q < 10 TeV. Of course, the PDFs are constrained by
+C...data only in a subset of that region; and the assumed DGLAP
+C...evolution is unlikely to be valid for all of it either.
+
+C...The range of (x, Q) used in the CTEQ5 round of global analysis is
+C...approximately 0.01 < x < 0.75 ; and 4 GeV^2 < Q^2 < 400 GeV^2 for
+C...fixed target experiments; 0.0001 < x < 0.3 from HERA data; and
+C...Q^2 up to 40,000 GeV^2 from Tevatron inclusive Jet data.
+
+ FUNCTION PYCT5L(IFL,X,Q)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+ PARAMETER (NEX=8, NLF=2)
+ DIMENSION AM(0:NEX,0:NLF,-5:2)
+ DIMENSION ALFVEC(-5:2), QMAVEC(-5:2)
+ DIMENSION MEXVEC(-5:2), MLFVEC(-5:2)
+ DIMENSION UT1VEC(-5:2), UT2VEC(-5:2)
+ DIMENSION AF(0:NEX)
+
+ DATA MEXVEC( 2) / 8 /
+ DATA MLFVEC( 2) / 2 /
+ DATA UT1VEC( 2) / 0.4971265E+01 /
+ DATA UT2VEC( 2) / -0.1105128E+01 /
+ DATA ALFVEC( 2) / 0.2987216E+00 /
+ DATA QMAVEC( 2) / 0.0000000E+00 /
+ DATA (AM( 0,K, 2),K=0, 2)
+ & / 0.5292616E+01, -0.2751910E+01, -0.2488990E+01 /
+ DATA (AM( 1,K, 2),K=0, 2)
+ & / 0.9714424E+00, 0.1011827E-01, -0.1023660E-01 /
+ DATA (AM( 2,K, 2),K=0, 2)
+ & / -0.1651006E+02, 0.7959721E+01, 0.8810563E+01 /
+ DATA (AM( 3,K, 2),K=0, 2)
+ & / -0.1643394E+02, 0.5892854E+01, 0.9348874E+01 /
+ DATA (AM( 4,K, 2),K=0, 2)
+ & / 0.3067422E+02, 0.4235796E+01, -0.5112136E+00 /
+ DATA (AM( 5,K, 2),K=0, 2)
+ & / 0.2352526E+02, -0.5305168E+01, -0.1169174E+02 /
+ DATA (AM( 6,K, 2),K=0, 2)
+ & / -0.1095451E+02, 0.3006577E+01, 0.5638136E+01 /
+ DATA (AM( 7,K, 2),K=0, 2)
+ & / -0.1172251E+02, -0.2183624E+01, 0.4955794E+01 /
+ DATA (AM( 8,K, 2),K=0, 2)
+ & / 0.1662533E-01, 0.7622870E-02, -0.4895887E-03 /
+
+ DATA MEXVEC( 1) / 8 /
+ DATA MLFVEC( 1) / 2 /
+ DATA UT1VEC( 1) / 0.2612618E+01 /
+ DATA UT2VEC( 1) / -0.1258304E+06 /
+ DATA ALFVEC( 1) / 0.3407552E+00 /
+ DATA QMAVEC( 1) / 0.0000000E+00 /
+ DATA (AM( 0,K, 1),K=0, 2)
+ & / 0.9905300E+00, -0.4502235E+00, 0.1624441E+00 /
+ DATA (AM( 1,K, 1),K=0, 2)
+ & / 0.8867534E+00, 0.1630829E-01, -0.4049085E-01 /
+ DATA (AM( 2,K, 1),K=0, 2)
+ & / 0.8547974E+00, 0.3336301E+00, 0.1371388E+00 /
+ DATA (AM( 3,K, 1),K=0, 2)
+ & / 0.2941113E+00, -0.1527905E+01, 0.2331879E+00 /
+ DATA (AM( 4,K, 1),K=0, 2)
+ & / 0.3384235E+02, 0.3715315E+01, 0.8276930E+00 /
+ DATA (AM( 5,K, 1),K=0, 2)
+ & / 0.6230115E+01, 0.3134639E+01, -0.1729099E+01 /
+ DATA (AM( 6,K, 1),K=0, 2)
+ & / -0.1186928E+01, -0.3282460E+00, 0.1052020E+00 /
+ DATA (AM( 7,K, 1),K=0, 2)
+ & / -0.8545702E+01, -0.6247947E+01, 0.3692561E+01 /
+ DATA (AM( 8,K, 1),K=0, 2)
+ & / 0.1724598E-01, 0.7120465E-02, 0.4003646E-04 /
+
+ DATA MEXVEC( 0) / 8 /
+ DATA MLFVEC( 0) / 2 /
+ DATA UT1VEC( 0) / -0.4656819E+00 /
+ DATA UT2VEC( 0) / -0.2742390E+03 /
+ DATA ALFVEC( 0) / 0.4491863E+00 /
+ DATA QMAVEC( 0) / 0.0000000E+00 /
+ DATA (AM( 0,K, 0),K=0, 2)
+ & / 0.1193572E+03, -0.3886845E+01, -0.1133965E+01 /
+ DATA (AM( 1,K, 0),K=0, 2)
+ & / -0.9421449E+02, 0.3995885E+01, 0.1607363E+01 /
+ DATA (AM( 2,K, 0),K=0, 2)
+ & / 0.4206383E+01, 0.2485954E+00, 0.2497468E+00 /
+ DATA (AM( 3,K, 0),K=0, 2)
+ & / 0.1210557E+03, -0.3015765E+01, -0.1423651E+01 /
+ DATA (AM( 4,K, 0),K=0, 2)
+ & / -0.1013897E+03, -0.7113478E+00, 0.2621865E+00 /
+ DATA (AM( 5,K, 0),K=0, 2)
+ & / -0.1312404E+01, -0.9297691E+00, -0.1562531E+00 /
+ DATA (AM( 6,K, 0),K=0, 2)
+ & / 0.1627137E+01, 0.4954111E+00, -0.6387009E+00 /
+ DATA (AM( 7,K, 0),K=0, 2)
+ & / 0.1537698E+00, -0.2487878E+00, 0.8305947E+00 /
+ DATA (AM( 8,K, 0),K=0, 2)
+ & / 0.2496448E-01, 0.2457823E-02, 0.8234276E-03 /
+
+ DATA MEXVEC(-1) / 8 /
+ DATA MLFVEC(-1) / 2 /
+ DATA UT1VEC(-1) / 0.3862583E+01 /
+ DATA UT2VEC(-1) / -0.1265969E+01 /
+ DATA ALFVEC(-1) / 0.2457668E+00 /
+ DATA QMAVEC(-1) / 0.0000000E+00 /
+ DATA (AM( 0,K,-1),K=0, 2)
+ & / 0.2647441E+02, 0.1059277E+02, -0.9176654E+00 /
+ DATA (AM( 1,K,-1),K=0, 2)
+ & / 0.1990636E+01, 0.8558918E-01, 0.4248667E-01 /
+ DATA (AM( 2,K,-1),K=0, 2)
+ & / -0.1476095E+02, -0.3276255E+02, 0.1558110E+01 /
+ DATA (AM( 3,K,-1),K=0, 2)
+ & / -0.2966889E+01, -0.3649037E+02, 0.1195914E+01 /
+ DATA (AM( 4,K,-1),K=0, 2)
+ & / -0.1000519E+03, -0.2464635E+01, 0.1964849E+00 /
+ DATA (AM( 5,K,-1),K=0, 2)
+ & / 0.3718331E+02, 0.4700389E+02, -0.2772142E+01 /
+ DATA (AM( 6,K,-1),K=0, 2)
+ & / -0.1872722E+02, -0.2291189E+02, 0.1089052E+01 /
+ DATA (AM( 7,K,-1),K=0, 2)
+ & / -0.1628146E+02, -0.1823993E+02, 0.2537369E+01 /
+ DATA (AM( 8,K,-1),K=0, 2)
+ & / -0.1156300E+01, -0.1280495E+00, 0.5153245E-01 /
+
+ DATA MEXVEC(-2) / 7 /
+ DATA MLFVEC(-2) / 2 /
+ DATA UT1VEC(-2) / 0.1895615E+00 /
+ DATA UT2VEC(-2) / -0.3069097E+01 /
+ DATA ALFVEC(-2) / 0.5293999E+00 /
+ DATA QMAVEC(-2) / 0.0000000E+00 /
+ DATA (AM( 0,K,-2),K=0, 2)
+ & / -0.6556775E+00, 0.2490190E+00, 0.3966485E-01 /
+ DATA (AM( 1,K,-2),K=0, 2)
+ & / 0.1305102E+01, -0.1188925E+00, -0.4600870E-02 /
+ DATA (AM( 2,K,-2),K=0, 2)
+ & / -0.2371436E+01, 0.3566814E+00, -0.2834683E+00 /
+ DATA (AM( 3,K,-2),K=0, 2)
+ & / -0.6152826E+01, 0.8339877E+00, -0.7233230E+00 /
+ DATA (AM( 4,K,-2),K=0, 2)
+ & / -0.8346558E+01, 0.2892168E+01, 0.2137099E+00 /
+ DATA (AM( 5,K,-2),K=0, 2)
+ & / 0.1279530E+02, 0.1021114E+00, 0.5787439E+00 /
+ DATA (AM( 6,K,-2),K=0, 2)
+ & / 0.5858816E+00, -0.1940375E+01, -0.4029269E+00 /
+ DATA (AM( 7,K,-2),K=0, 2)
+ & / -0.2795725E+02, -0.5263392E+00, 0.1290229E+01 /
+
+ DATA MEXVEC(-3) / 7 /
+ DATA MLFVEC(-3) / 2 /
+ DATA UT1VEC(-3) / 0.3753257E+01 /
+ DATA UT2VEC(-3) / -0.1113085E+01 /
+ DATA ALFVEC(-3) / 0.3713141E+00 /
+ DATA QMAVEC(-3) / 0.0000000E+00 /
+ DATA (AM( 0,K,-3),K=0, 2)
+ & / 0.1580931E+01, -0.2273826E+01, -0.1822245E+01 /
+ DATA (AM( 1,K,-3),K=0, 2)
+ & / 0.2702644E+01, 0.6763243E+00, 0.7231586E-02 /
+ DATA (AM( 2,K,-3),K=0, 2)
+ & / -0.1857924E+02, 0.3907500E+01, 0.5850109E+01 /
+ DATA (AM( 3,K,-3),K=0, 2)
+ & / -0.3044793E+02, 0.2639332E+01, 0.5566644E+01 /
+ DATA (AM( 4,K,-3),K=0, 2)
+ & / -0.4258011E+01, -0.5429244E+01, 0.4418946E+00 /
+ DATA (AM( 5,K,-3),K=0, 2)
+ & / 0.3465259E+02, -0.5532604E+01, -0.4904153E+01 /
+ DATA (AM( 6,K,-3),K=0, 2)
+ & / -0.1658858E+02, 0.2923275E+01, 0.2266286E+01 /
+ DATA (AM( 7,K,-3),K=0, 2)
+ & / -0.1149263E+02, 0.2877475E+01, -0.7999105E+00 /
+
+ DATA MEXVEC(-4) / 7 /
+ DATA MLFVEC(-4) / 2 /
+ DATA UT1VEC(-4) / 0.4400772E+01 /
+ DATA UT2VEC(-4) / -0.1356116E+01 /
+ DATA ALFVEC(-4) / 0.3712017E-01 /
+ DATA QMAVEC(-4) / 0.1300000E+01 /
+ DATA (AM( 0,K,-4),K=0, 2)
+ & / -0.8293661E+00, -0.3982375E+01, -0.6494283E-01 /
+ DATA (AM( 1,K,-4),K=0, 2)
+ & / 0.2754618E+01, 0.8338636E+00, -0.6885160E-01 /
+ DATA (AM( 2,K,-4),K=0, 2)
+ & / -0.1657987E+02, 0.1439143E+02, -0.6887240E+00 /
+ DATA (AM( 3,K,-4),K=0, 2)
+ & / -0.2800703E+02, 0.1535966E+02, -0.7377693E+00 /
+ DATA (AM( 4,K,-4),K=0, 2)
+ & / -0.6460216E+01, -0.4783019E+01, 0.4913297E+00 /
+ DATA (AM( 5,K,-4),K=0, 2)
+ & / 0.3141830E+02, -0.3178031E+02, 0.7136013E+01 /
+ DATA (AM( 6,K,-4),K=0, 2)
+ & / -0.1802509E+02, 0.1862163E+02, -0.4632843E+01 /
+ DATA (AM( 7,K,-4),K=0, 2)
+ & / -0.1240412E+02, 0.2565386E+02, -0.1066570E+02 /
+
+ DATA MEXVEC(-5) / 6 /
+ DATA MLFVEC(-5) / 2 /
+ DATA UT1VEC(-5) / 0.5562568E+01 /
+ DATA UT2VEC(-5) / -0.1801317E+01 /
+ DATA ALFVEC(-5) / 0.4952010E-02 /
+ DATA QMAVEC(-5) / 0.4500000E+01 /
+ DATA (AM( 0,K,-5),K=0, 2)
+ & / -0.6031237E+01, 0.1992727E+01, -0.1076331E+01 /
+ DATA (AM( 1,K,-5),K=0, 2)
+ & / 0.2933912E+01, 0.5839674E+00, 0.7509435E-01 /
+ DATA (AM( 2,K,-5),K=0, 2)
+ & / -0.8284919E+01, 0.1488593E+01, -0.8251678E+00 /
+ DATA (AM( 3,K,-5),K=0, 2)
+ & / -0.1925986E+02, 0.2805753E+01, -0.3015446E+01 /
+ DATA (AM( 4,K,-5),K=0, 2)
+ & / -0.9480483E+01, -0.9767837E+00, -0.1165544E+01 /
+ DATA (AM( 5,K,-5),K=0, 2)
+ & / 0.2193195E+02, -0.1788518E+02, 0.9460908E+01 /
+ DATA (AM( 6,K,-5),K=0, 2)
+ & / -0.1327377E+02, 0.1201754E+02, -0.6277844E+01 /
+
+ IF(Q .LE. QMAVEC(IFL)) THEN
+ PYCT5L = 0.D0
+ RETURN
+ ENDIF
+
+ IF(X .GE. 1.D0) THEN
+ PYCT5L = 0.D0
+ RETURN
+ ENDIF
+
+ TMP = LOG(Q/ALFVEC(IFL))
+ IF(TMP .LE. 0.D0) THEN
+ PYCT5L = 0.D0
+ RETURN
+ ENDIF
+
+ SB = LOG(TMP)
+ SB1 = SB - 1.2D0
+ SB2 = SB1*SB1
+
+ DO 110 I = 0, NEX
+ AF(I) = 0.D0
+ SBX = 1.D0
+ DO 100 K = 0, MLFVEC(IFL)
+ AF(I) = AF(I) + SBX*AM(I,K,IFL)
+ SBX = SB1*SBX
+ 100 CONTINUE
+ 110 CONTINUE
+
+ Y = -LOG(X)
+ U = LOG(X/0.00001D0)
+
+ PART1 = AF(1)*Y**(1.D0+0.01D0*AF(4))*(1.D0+ AF(8)*U)
+ PART2 = AF(0)*(1.D0 - X) + AF(3)*X
+ PART3 = X*(1.D0-X)*(AF(5)+AF(6)*(1.D0-X)+AF(7)*X*(1.D0-X))
+ PART4 = UT1VEC(IFL)*LOG(1.D0-X) +
+ & AF(2)*LOG(1.D0+EXP(UT2VEC(IFL))-X)
+
+ PYCT5L = EXP(LOG(X) + PART1 + PART2 + PART3 + PART4)
+
+C...Include threshold factor.
+ PYCT5L = PYCT5L * (1.D0 - QMAVEC(IFL)/Q)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCT5M
+C...Auxiliary function for parametrization of CTEQ5M1.
+C...Author: J. Pumplin 9/99.
+
+ FUNCTION PYCT5M(IFL,X,Q)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+ PARAMETER (NEX=8, NLF=2)
+ DIMENSION AM(0:NEX,0:NLF,-5:2)
+ DIMENSION ALFVEC(-5:2), QMAVEC(-5:2)
+ DIMENSION MEXVEC(-5:2), MLFVEC(-5:2)
+ DIMENSION UT1VEC(-5:2), UT2VEC(-5:2)
+ DIMENSION AF(0:NEX)
+
+ DATA MEXVEC( 2) / 8 /
+ DATA MLFVEC( 2) / 2 /
+ DATA UT1VEC( 2) / 0.5141718E+01 /
+ DATA UT2VEC( 2) / -0.1346944E+01 /
+ DATA ALFVEC( 2) / 0.5260555E+00 /
+ DATA QMAVEC( 2) / 0.0000000E+00 /
+ DATA (AM( 0,K, 2),K=0, 2)
+ & / 0.4289071E+01, -0.2536870E+01, -0.1259948E+01 /
+ DATA (AM( 1,K, 2),K=0, 2)
+ & / 0.9839410E+00, 0.4168426E-01, -0.5018952E-01 /
+ DATA (AM( 2,K, 2),K=0, 2)
+ & / -0.1651961E+02, 0.9246261E+01, 0.5996400E+01 /
+ DATA (AM( 3,K, 2),K=0, 2)
+ & / -0.2077936E+02, 0.9786469E+01, 0.7656465E+01 /
+ DATA (AM( 4,K, 2),K=0, 2)
+ & / 0.3054926E+02, 0.1889536E+01, 0.1380541E+01 /
+ DATA (AM( 5,K, 2),K=0, 2)
+ & / 0.3084695E+02, -0.1212303E+02, -0.1053551E+02 /
+ DATA (AM( 6,K, 2),K=0, 2)
+ & / -0.1426778E+02, 0.6239537E+01, 0.5254819E+01 /
+ DATA (AM( 7,K, 2),K=0, 2)
+ & / -0.1909811E+02, 0.3695678E+01, 0.5495729E+01 /
+ DATA (AM( 8,K, 2),K=0, 2)
+ & / 0.1889751E-01, 0.5027193E-02, 0.6624896E-03 /
+
+ DATA MEXVEC( 1) / 8 /
+ DATA MLFVEC( 1) / 2 /
+ DATA UT1VEC( 1) / 0.4138426E+01 /
+ DATA UT2VEC( 1) / -0.3221374E+01 /
+ DATA ALFVEC( 1) / 0.4960962E+00 /
+ DATA QMAVEC( 1) / 0.0000000E+00 /
+ DATA (AM( 0,K, 1),K=0, 2)
+ & / 0.1332497E+01, -0.3703718E+00, 0.1288638E+00 /
+ DATA (AM( 1,K, 1),K=0, 2)
+ & / 0.7544687E+00, 0.3255075E-01, -0.4706680E-01 /
+ DATA (AM( 2,K, 1),K=0, 2)
+ & / -0.7638814E+00, 0.5008313E+00, -0.9237374E-01 /
+ DATA (AM( 3,K, 1),K=0, 2)
+ & / -0.3689889E+00, -0.1055098E+01, -0.4645065E+00 /
+ DATA (AM( 4,K, 1),K=0, 2)
+ & / 0.3991610E+02, 0.1979881E+01, 0.1775814E+01 /
+ DATA (AM( 5,K, 1),K=0, 2)
+ & / 0.6201080E+01, 0.2046288E+01, 0.3804571E+00 /
+ DATA (AM( 6,K, 1),K=0, 2)
+ & / -0.8027900E+00, -0.7011688E+00, -0.8049612E+00 /
+ DATA (AM( 7,K, 1),K=0, 2)
+ & / -0.8631305E+01, -0.3981200E+01, 0.6970153E+00 /
+ DATA (AM( 8,K, 1),K=0, 2)
+ & / 0.2371230E-01, 0.5372683E-02, 0.1118701E-02 /
+
+ DATA MEXVEC( 0) / 8 /
+ DATA MLFVEC( 0) / 2 /
+ DATA UT1VEC( 0) / -0.1026789E+01 /
+ DATA UT2VEC( 0) / -0.9051707E+01 /
+ DATA ALFVEC( 0) / 0.9462977E+00 /
+ DATA QMAVEC( 0) / 0.0000000E+00 /
+ DATA (AM( 0,K, 0),K=0, 2)
+ & / 0.1191990E+03, -0.8548739E+00, -0.1963040E+01 /
+ DATA (AM( 1,K, 0),K=0, 2)
+ & / -0.9449972E+02, 0.1074771E+01, 0.2056055E+01 /
+ DATA (AM( 2,K, 0),K=0, 2)
+ & / 0.3701064E+01, -0.1167947E-02, 0.1933573E+00 /
+ DATA (AM( 3,K, 0),K=0, 2)
+ & / 0.1171345E+03, -0.1064540E+01, -0.1875312E+01 /
+ DATA (AM( 4,K, 0),K=0, 2)
+ & / -0.1014453E+03, -0.5707427E+00, 0.4511242E-01 /
+ DATA (AM( 5,K, 0),K=0, 2)
+ & / 0.6365168E+01, 0.1275354E+01, -0.4964081E+00 /
+ DATA (AM( 6,K, 0),K=0, 2)
+ & / -0.3370693E+01, -0.1122020E+01, 0.5947751E-01 /
+ DATA (AM( 7,K, 0),K=0, 2)
+ & / -0.5327270E+01, -0.9293556E+00, 0.6629940E+00 /
+ DATA (AM( 8,K, 0),K=0, 2)
+ & / 0.2437513E-01, 0.1600939E-02, 0.6855336E-03 /
+
+ DATA MEXVEC(-1) / 8 /
+ DATA MLFVEC(-1) / 2 /
+ DATA UT1VEC(-1) / 0.5243571E+01 /
+ DATA UT2VEC(-1) / -0.2870513E+01 /
+ DATA ALFVEC(-1) / 0.6701448E+00 /
+ DATA QMAVEC(-1) / 0.0000000E+00 /
+ DATA (AM( 0,K,-1),K=0, 2)
+ & / 0.2428863E+02, 0.1907035E+01, -0.4606457E+00 /
+ DATA (AM( 1,K,-1),K=0, 2)
+ & / 0.2006810E+01, -0.1265915E+00, 0.7153556E-02 /
+ DATA (AM( 2,K,-1),K=0, 2)
+ & / -0.1884546E+02, -0.2339471E+01, 0.5740679E+01 /
+ DATA (AM( 3,K,-1),K=0, 2)
+ & / -0.2527892E+02, -0.2044124E+01, 0.1280470E+02 /
+ DATA (AM( 4,K,-1),K=0, 2)
+ & / -0.1013824E+03, -0.1594199E+01, 0.2216401E+00 /
+ DATA (AM( 5,K,-1),K=0, 2)
+ & / 0.8070930E+02, 0.1792072E+01, -0.2164364E+02 /
+ DATA (AM( 6,K,-1),K=0, 2)
+ & / -0.4641050E+02, 0.1977338E+00, 0.1273014E+02 /
+ DATA (AM( 7,K,-1),K=0, 2)
+ & / -0.3910568E+02, 0.1719632E+01, 0.1086525E+02 /
+ DATA (AM( 8,K,-1),K=0, 2)
+ & / -0.1185496E+01, -0.1905847E+00, -0.8744118E-03 /
+
+ DATA MEXVEC(-2) / 7 /
+ DATA MLFVEC(-2) / 2 /
+ DATA UT1VEC(-2) / 0.4782210E+01 /
+ DATA UT2VEC(-2) / -0.1976856E+02 /
+ DATA ALFVEC(-2) / 0.7558374E+00 /
+ DATA QMAVEC(-2) / 0.0000000E+00 /
+ DATA (AM( 0,K,-2),K=0, 2)
+ & / -0.6216935E+00, 0.2369963E+00, -0.7909949E-02 /
+ DATA (AM( 1,K,-2),K=0, 2)
+ & / 0.1245440E+01, -0.1031510E+00, 0.4916523E-02 /
+ DATA (AM( 2,K,-2),K=0, 2)
+ & / -0.7060824E+01, -0.3875283E-01, 0.1784981E+00 /
+ DATA (AM( 3,K,-2),K=0, 2)
+ & / -0.7430595E+01, 0.1964572E+00, -0.1284999E+00 /
+ DATA (AM( 4,K,-2),K=0, 2)
+ & / -0.6897810E+01, 0.2620543E+01, 0.8012553E-02 /
+ DATA (AM( 5,K,-2),K=0, 2)
+ & / 0.1507713E+02, 0.2340307E-01, 0.2482535E+01 /
+ DATA (AM( 6,K,-2),K=0, 2)
+ & / -0.1815341E+01, -0.1538698E+01, -0.2014208E+01 /
+ DATA (AM( 7,K,-2),K=0, 2)
+ & / -0.2571932E+02, 0.2903941E+00, -0.2848206E+01 /
+
+ DATA MEXVEC(-3) / 7 /
+ DATA MLFVEC(-3) / 2 /
+ DATA UT1VEC(-3) / 0.4518239E+01 /
+ DATA UT2VEC(-3) / -0.2690590E+01 /
+ DATA ALFVEC(-3) / 0.6124079E+00 /
+ DATA QMAVEC(-3) / 0.0000000E+00 /
+ DATA (AM( 0,K,-3),K=0, 2)
+ & / -0.2734458E+01, -0.7245673E+00, -0.6351374E+00 /
+ DATA (AM( 1,K,-3),K=0, 2)
+ & / 0.2927174E+01, 0.4822709E+00, -0.1088787E-01 /
+ DATA (AM( 2,K,-3),K=0, 2)
+ & / -0.1771017E+02, -0.1416635E+01, 0.8467622E+01 /
+ DATA (AM( 3,K,-3),K=0, 2)
+ & / -0.4972782E+02, -0.3348547E+01, 0.1767061E+02 /
+ DATA (AM( 4,K,-3),K=0, 2)
+ & / -0.7102770E+01, -0.3205337E+01, 0.4101704E+00 /
+ DATA (AM( 5,K,-3),K=0, 2)
+ & / 0.7169698E+02, -0.2205985E+01, -0.2463931E+02 /
+ DATA (AM( 6,K,-3),K=0, 2)
+ & / -0.4090347E+02, 0.2103486E+01, 0.1416507E+02 /
+ DATA (AM( 7,K,-3),K=0, 2)
+ & / -0.2952639E+02, 0.5376136E+01, 0.7825585E+01 /
+
+ DATA MEXVEC(-4) / 7 /
+ DATA MLFVEC(-4) / 2 /
+ DATA UT1VEC(-4) / 0.2783230E+01 /
+ DATA UT2VEC(-4) / -0.1746328E+01 /
+ DATA ALFVEC(-4) / 0.1115653E+01 /
+ DATA QMAVEC(-4) / 0.1300000E+01 /
+ DATA (AM( 0,K,-4),K=0, 2)
+ & / -0.1743872E+01, -0.1128921E+01, -0.2841969E+00 /
+ DATA (AM( 1,K,-4),K=0, 2)
+ & / 0.3345755E+01, 0.3187765E+00, 0.1378124E+00 /
+ DATA (AM( 2,K,-4),K=0, 2)
+ & / -0.2037615E+02, 0.4121687E+01, 0.2236520E+00 /
+ DATA (AM( 3,K,-4),K=0, 2)
+ & / -0.4703104E+02, 0.5353087E+01, -0.1455347E+01 /
+ DATA (AM( 4,K,-4),K=0, 2)
+ & / -0.1060230E+02, -0.1551122E+01, -0.1078863E+01 /
+ DATA (AM( 5,K,-4),K=0, 2)
+ & / 0.5088892E+02, -0.8197304E+01, 0.8083451E+01 /
+ DATA (AM( 6,K,-4),K=0, 2)
+ & / -0.2819070E+02, 0.4554086E+01, -0.5890995E+01 /
+ DATA (AM( 7,K,-4),K=0, 2)
+ & / -0.1098238E+02, 0.2590096E+01, -0.8062879E+01 /
+
+ DATA MEXVEC(-5) / 6 /
+ DATA MLFVEC(-5) / 2 /
+ DATA UT1VEC(-5) / 0.1619654E+02 /
+ DATA UT2VEC(-5) / -0.3367346E+01 /
+ DATA ALFVEC(-5) / 0.5109891E-02 /
+ DATA QMAVEC(-5) / 0.4500000E+01 /
+ DATA (AM( 0,K,-5),K=0, 2)
+ & / -0.6800138E+01, 0.2493627E+01, -0.1075724E+01 /
+ DATA (AM( 1,K,-5),K=0, 2)
+ & / 0.3036555E+01, 0.3324733E+00, 0.2008298E+00 /
+ DATA (AM( 2,K,-5),K=0, 2)
+ & / -0.5203879E+01, -0.8493476E+01, -0.4523208E+01 /
+ DATA (AM( 3,K,-5),K=0, 2)
+ & / -0.1524239E+01, -0.3411912E+01, -0.1771867E+02 /
+ DATA (AM( 4,K,-5),K=0, 2)
+ & / -0.1099444E+02, 0.1320930E+01, -0.2353831E+01 /
+ DATA (AM( 5,K,-5),K=0, 2)
+ & / 0.1699299E+02, -0.3565802E+02, 0.3566872E+02 /
+ DATA (AM( 6,K,-5),K=0, 2)
+ & / -0.1465793E+02, 0.2703365E+02, -0.2176372E+02 /
+
+ IF(Q .LE. QMAVEC(IFL)) THEN
+ PYCT5M = 0.D0
+ RETURN
+ ENDIF
+
+ IF(X .GE. 1.D0) THEN
+ PYCT5M = 0.D0
+ RETURN
+ ENDIF
+
+ TMP = LOG(Q/ALFVEC(IFL))
+ IF(TMP .LE. 0.D0) THEN
+ PYCT5M = 0.D0
+ RETURN
+ ENDIF
+
+ SB = LOG(TMP)
+ SB1 = SB - 1.2D0
+ SB2 = SB1*SB1
+
+ DO 110 I = 0, NEX
+ AF(I) = 0.D0
+ SBX = 1.D0
+ DO 100 K = 0, MLFVEC(IFL)
+ AF(I) = AF(I) + SBX*AM(I,K,IFL)
+ SBX = SB1*SBX
+ 100 CONTINUE
+ 110 CONTINUE
+
+ Y = -LOG(X)
+ U = LOG(X/0.00001D0)
+
+ PART1 = AF(1)*Y**(1.D0+0.01D0*AF(4))*(1.D0+ AF(8)*U)
+ PART2 = AF(0)*(1.D0 - X) + AF(3)*X
+ PART3 = X*(1.D0-X)*(AF(5)+AF(6)*(1.D0-X)+AF(7)*X*(1.D0-X))
+ PART4 = UT1VEC(IFL)*LOG(1.D0-X) +
+ & AF(2)*LOG(1.D0+EXP(UT2VEC(IFL))-X)
+
+ PYCT5M = EXP(LOG(X) + PART1 + PART2 + PART3 + PART4)
+
+C...Include threshold factor.
+ PYCT5M = PYCT5M * (1.D0 - QMAVEC(IFL)/Q)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPDPO
+C...Auxiliary to PYPDPR. Gives proton parton distributions according to
+C...a few older parametrizations, now obsolete but convenient for
+C...backwards checks.
+
+ SUBROUTINE PYPDPO(X,Q2,XPPR)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/
+ DIMENSION XPPR(-6:6),XQ(9),TX(6),TT(6),TS(6),NEHLQ(8,2),
+ &CEHLQ(6,6,2,8,2),CDO(3,6,5,2)
+
+
+C...The following data lines are coefficients needed in the
+C...Eichten, Hinchliffe, Lane, Quigg proton structure function
+C...parametrizations, see below.
+C...Powers of 1-x in different cases.
+ DATA NEHLQ/3,4,7,5,7,7,7,7,3,4,7,6,7,7,7,7/
+C...Expansion coefficients for up valence quark distribution.
+ DATA (((CEHLQ(IX,IT,NX,1,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 7.677D-01,-2.087D-01,-3.303D-01,-2.517D-02,-1.570D-02,-1.000D-04,
+ 2-5.326D-01,-2.661D-01, 3.201D-01, 1.192D-01, 2.434D-02, 7.620D-03,
+ 3 2.162D-01, 1.881D-01,-8.375D-02,-6.515D-02,-1.743D-02,-5.040D-03,
+ 4-9.211D-02,-9.952D-02, 1.373D-02, 2.506D-02, 8.770D-03, 2.550D-03,
+ 5 3.670D-02, 4.409D-02, 9.600D-04,-7.960D-03,-3.420D-03,-1.050D-03,
+ 6-1.549D-02,-2.026D-02,-3.060D-03, 2.220D-03, 1.240D-03, 4.100D-04,
+ 1 2.395D-01, 2.905D-01, 9.778D-02, 2.149D-02, 3.440D-03, 5.000D-04,
+ 2 1.751D-02,-6.090D-03,-2.687D-02,-1.916D-02,-7.970D-03,-2.750D-03,
+ 3-5.760D-03,-5.040D-03, 1.080D-03, 2.490D-03, 1.530D-03, 7.500D-04,
+ 4 1.740D-03, 1.960D-03, 3.000D-04,-3.400D-04,-2.900D-04,-1.800D-04,
+ 5-5.300D-04,-6.400D-04,-1.700D-04, 4.000D-05, 6.000D-05, 4.000D-05,
+ 6 1.700D-04, 2.200D-04, 8.000D-05, 1.000D-05,-1.000D-05,-1.000D-05/
+ DATA (((CEHLQ(IX,IT,NX,1,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 7.237D-01,-2.189D-01,-2.995D-01,-1.909D-02,-1.477D-02, 2.500D-04,
+ 2-5.314D-01,-2.425D-01, 3.283D-01, 1.119D-01, 2.223D-02, 7.070D-03,
+ 3 2.289D-01, 1.890D-01,-9.859D-02,-6.900D-02,-1.747D-02,-5.080D-03,
+ 4-1.041D-01,-1.084D-01, 2.108D-02, 2.975D-02, 9.830D-03, 2.830D-03,
+ 5 4.394D-02, 5.116D-02,-1.410D-03,-1.055D-02,-4.230D-03,-1.270D-03,
+ 6-1.991D-02,-2.539D-02,-2.780D-03, 3.430D-03, 1.720D-03, 5.500D-04,
+ 1 2.410D-01, 2.884D-01, 9.369D-02, 1.900D-02, 2.530D-03, 2.400D-04,
+ 2 1.765D-02,-9.220D-03,-3.037D-02,-2.085D-02,-8.440D-03,-2.810D-03,
+ 3-6.450D-03,-5.260D-03, 1.720D-03, 3.110D-03, 1.830D-03, 8.700D-04,
+ 4 2.120D-03, 2.320D-03, 2.600D-04,-4.900D-04,-3.900D-04,-2.300D-04,
+ 5-6.900D-04,-8.200D-04,-2.000D-04, 7.000D-05, 9.000D-05, 6.000D-05,
+ 6 2.400D-04, 3.100D-04, 1.100D-04, 0.000D+00,-2.000D-05,-2.000D-05/
+C...Expansion coefficients for down valence quark distribution.
+ DATA (((CEHLQ(IX,IT,NX,2,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 3.813D-01,-8.090D-02,-1.634D-01,-2.185D-02,-8.430D-03,-6.200D-04,
+ 2-2.948D-01,-1.435D-01, 1.665D-01, 6.638D-02, 1.473D-02, 4.080D-03,
+ 3 1.252D-01, 1.042D-01,-4.722D-02,-3.683D-02,-1.038D-02,-2.860D-03,
+ 4-5.478D-02,-5.678D-02, 8.900D-03, 1.484D-02, 5.340D-03, 1.520D-03,
+ 5 2.220D-02, 2.567D-02,-3.000D-05,-4.970D-03,-2.160D-03,-6.500D-04,
+ 6-9.530D-03,-1.204D-02,-1.510D-03, 1.510D-03, 8.300D-04, 2.700D-04,
+ 1 1.261D-01, 1.354D-01, 3.958D-02, 8.240D-03, 1.660D-03, 4.500D-04,
+ 2 3.890D-03,-1.159D-02,-1.625D-02,-9.610D-03,-3.710D-03,-1.260D-03,
+ 3-1.910D-03,-5.600D-04, 1.590D-03, 1.590D-03, 8.400D-04, 3.900D-04,
+ 4 6.400D-04, 4.900D-04,-1.500D-04,-2.900D-04,-1.800D-04,-1.000D-04,
+ 5-2.000D-04,-1.900D-04, 0.000D+00, 6.000D-05, 4.000D-05, 3.000D-05,
+ 6 7.000D-05, 8.000D-05, 2.000D-05,-1.000D-05,-1.000D-05,-1.000D-05/
+ DATA (((CEHLQ(IX,IT,NX,2,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 3.578D-01,-8.622D-02,-1.480D-01,-1.840D-02,-7.820D-03,-4.500D-04,
+ 2-2.925D-01,-1.304D-01, 1.696D-01, 6.243D-02, 1.353D-02, 3.750D-03,
+ 3 1.318D-01, 1.041D-01,-5.486D-02,-3.872D-02,-1.038D-02,-2.850D-03,
+ 4-6.162D-02,-6.143D-02, 1.303D-02, 1.740D-02, 5.940D-03, 1.670D-03,
+ 5 2.643D-02, 2.957D-02,-1.490D-03,-6.450D-03,-2.630D-03,-7.700D-04,
+ 6-1.218D-02,-1.497D-02,-1.260D-03, 2.240D-03, 1.120D-03, 3.500D-04,
+ 1 1.263D-01, 1.334D-01, 3.732D-02, 7.070D-03, 1.260D-03, 3.400D-04,
+ 2 3.660D-03,-1.357D-02,-1.795D-02,-1.031D-02,-3.880D-03,-1.280D-03,
+ 3-2.100D-03,-3.600D-04, 2.050D-03, 1.920D-03, 9.800D-04, 4.400D-04,
+ 4 7.700D-04, 5.400D-04,-2.400D-04,-3.900D-04,-2.400D-04,-1.300D-04,
+ 5-2.600D-04,-2.300D-04, 2.000D-05, 9.000D-05, 6.000D-05, 4.000D-05,
+ 6 9.000D-05, 1.000D-04, 2.000D-05,-2.000D-05,-2.000D-05,-1.000D-05/
+C...Expansion coefficients for up and down sea quark distributions.
+ DATA (((CEHLQ(IX,IT,NX,3,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 6.870D-02,-6.861D-02, 2.973D-02,-5.400D-03, 3.780D-03,-9.700D-04,
+ 2-1.802D-02, 1.400D-04, 6.490D-03,-8.540D-03, 1.220D-03,-1.750D-03,
+ 3-4.650D-03, 1.480D-03,-5.930D-03, 6.000D-04,-1.030D-03,-8.000D-05,
+ 4 6.440D-03, 2.570D-03, 2.830D-03, 1.150D-03, 7.100D-04, 3.300D-04,
+ 5-3.930D-03,-2.540D-03,-1.160D-03,-7.700D-04,-3.600D-04,-1.900D-04,
+ 6 2.340D-03, 1.930D-03, 5.300D-04, 3.700D-04, 1.600D-04, 9.000D-05,
+ 1 1.014D+00,-1.106D+00, 3.374D-01,-7.444D-02, 8.850D-03,-8.700D-04,
+ 2 9.233D-01,-1.285D+00, 4.475D-01,-9.786D-02, 1.419D-02,-1.120D-03,
+ 3 4.888D-02,-1.271D-01, 8.606D-02,-2.608D-02, 4.780D-03,-6.000D-04,
+ 4-2.691D-02, 4.887D-02,-1.771D-02, 1.620D-03, 2.500D-04,-6.000D-05,
+ 5 7.040D-03,-1.113D-02, 1.590D-03, 7.000D-04,-2.000D-04, 0.000D+00,
+ 6-1.710D-03, 2.290D-03, 3.800D-04,-3.500D-04, 4.000D-05, 1.000D-05/
+ DATA (((CEHLQ(IX,IT,NX,3,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 1.008D-01,-7.100D-02, 1.973D-02,-5.710D-03, 2.930D-03,-9.900D-04,
+ 2-5.271D-02,-1.823D-02, 1.792D-02,-6.580D-03, 1.750D-03,-1.550D-03,
+ 3 1.220D-02, 1.763D-02,-8.690D-03,-8.800D-04,-1.160D-03,-2.100D-04,
+ 4-1.190D-03,-7.180D-03, 2.360D-03, 1.890D-03, 7.700D-04, 4.100D-04,
+ 5-9.100D-04, 2.040D-03,-3.100D-04,-1.050D-03,-4.000D-04,-2.400D-04,
+ 6 1.190D-03,-1.700D-04,-2.000D-04, 4.200D-04, 1.700D-04, 1.000D-04,
+ 1 1.081D+00,-1.189D+00, 3.868D-01,-8.617D-02, 1.115D-02,-1.180D-03,
+ 2 9.917D-01,-1.396D+00, 4.998D-01,-1.159D-01, 1.674D-02,-1.720D-03,
+ 3 5.099D-02,-1.338D-01, 9.173D-02,-2.885D-02, 5.890D-03,-6.500D-04,
+ 4-3.178D-02, 5.703D-02,-2.070D-02, 2.440D-03, 1.100D-04,-9.000D-05,
+ 5 8.970D-03,-1.392D-02, 2.050D-03, 6.500D-04,-2.300D-04, 2.000D-05,
+ 6-2.340D-03, 3.010D-03, 5.000D-04,-3.900D-04, 6.000D-05, 1.000D-05/
+C...Expansion coefficients for gluon distribution.
+ DATA (((CEHLQ(IX,IT,NX,4,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 9.482D-01,-9.578D-01, 1.009D-01,-1.051D-01, 3.456D-02,-3.054D-02,
+ 2-9.627D-01, 5.379D-01, 3.368D-01,-9.525D-02, 1.488D-02,-2.051D-02,
+ 3 4.300D-01,-8.306D-02,-3.372D-01, 4.902D-02,-9.160D-03, 1.041D-02,
+ 4-1.925D-01,-1.790D-02, 2.183D-01, 7.490D-03, 4.140D-03,-1.860D-03,
+ 5 8.183D-02, 1.926D-02,-1.072D-01,-1.944D-02,-2.770D-03,-5.200D-04,
+ 6-3.884D-02,-1.234D-02, 5.410D-02, 1.879D-02, 3.350D-03, 1.040D-03,
+ 1 2.948D+01,-3.902D+01, 1.464D+01,-3.335D+00, 5.054D-01,-5.915D-02,
+ 2 2.559D+01,-3.955D+01, 1.661D+01,-4.299D+00, 6.904D-01,-8.243D-02,
+ 3-1.663D+00, 1.176D+00, 1.118D+00,-7.099D-01, 1.948D-01,-2.404D-02,
+ 4-2.168D-01, 8.170D-01,-7.169D-01, 1.851D-01,-1.924D-02,-3.250D-03,
+ 5 2.088D-01,-4.355D-01, 2.239D-01,-2.446D-02,-3.620D-03, 1.910D-03,
+ 6-9.097D-02, 1.601D-01,-5.681D-02,-2.500D-03, 2.580D-03,-4.700D-04/
+ DATA (((CEHLQ(IX,IT,NX,4,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 2.367D+00, 4.453D-01, 3.660D-01, 9.467D-02, 1.341D-01, 1.661D-02,
+ 2-3.170D+00,-1.795D+00, 3.313D-02,-2.874D-01,-9.827D-02,-7.119D-02,
+ 3 1.823D+00, 1.457D+00,-2.465D-01, 3.739D-02, 6.090D-03, 1.814D-02,
+ 4-1.033D+00,-9.827D-01, 2.136D-01, 1.169D-01, 5.001D-02, 1.684D-02,
+ 5 5.133D-01, 5.259D-01,-1.173D-01,-1.139D-01,-4.988D-02,-2.021D-02,
+ 6-2.881D-01,-3.145D-01, 5.667D-02, 9.161D-02, 4.568D-02, 1.951D-02,
+ 1 3.036D+01,-4.062D+01, 1.578D+01,-3.699D+00, 6.020D-01,-7.031D-02,
+ 2 2.700D+01,-4.167D+01, 1.770D+01,-4.804D+00, 7.862D-01,-1.060D-01,
+ 3-1.909D+00, 1.357D+00, 1.127D+00,-7.181D-01, 2.232D-01,-2.481D-02,
+ 4-2.488D-01, 9.781D-01,-8.127D-01, 2.094D-01,-2.997D-02,-4.710D-03,
+ 5 2.506D-01,-5.427D-01, 2.672D-01,-3.103D-02,-1.800D-03, 2.870D-03,
+ 6-1.128D-01, 2.087D-01,-6.972D-02,-2.480D-03, 2.630D-03,-8.400D-04/
+C...Expansion coefficients for strange sea quark distribution.
+ DATA (((CEHLQ(IX,IT,NX,5,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 4.968D-02,-4.173D-02, 2.102D-02,-3.270D-03, 3.240D-03,-6.700D-04,
+ 2-6.150D-03,-1.294D-02, 6.740D-03,-6.890D-03, 9.000D-04,-1.510D-03,
+ 3-8.580D-03, 5.050D-03,-4.900D-03,-1.600D-04,-9.400D-04,-1.500D-04,
+ 4 7.840D-03, 1.510D-03, 2.220D-03, 1.400D-03, 7.000D-04, 3.500D-04,
+ 5-4.410D-03,-2.220D-03,-8.900D-04,-8.500D-04,-3.600D-04,-2.000D-04,
+ 6 2.520D-03, 1.840D-03, 4.100D-04, 3.900D-04, 1.600D-04, 9.000D-05,
+ 1 9.235D-01,-1.085D+00, 3.464D-01,-7.210D-02, 9.140D-03,-9.100D-04,
+ 2 9.315D-01,-1.274D+00, 4.512D-01,-9.775D-02, 1.380D-02,-1.310D-03,
+ 3 4.739D-02,-1.296D-01, 8.482D-02,-2.642D-02, 4.760D-03,-5.700D-04,
+ 4-2.653D-02, 4.953D-02,-1.735D-02, 1.750D-03, 2.800D-04,-6.000D-05,
+ 5 6.940D-03,-1.132D-02, 1.480D-03, 6.500D-04,-2.100D-04, 0.000D+00,
+ 6-1.680D-03, 2.340D-03, 4.200D-04,-3.400D-04, 5.000D-05, 1.000D-05/
+ DATA (((CEHLQ(IX,IT,NX,5,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 6.478D-02,-4.537D-02, 1.643D-02,-3.490D-03, 2.710D-03,-6.700D-04,
+ 2-2.223D-02,-2.126D-02, 1.247D-02,-6.290D-03, 1.120D-03,-1.440D-03,
+ 3-1.340D-03, 1.362D-02,-6.130D-03,-7.900D-04,-9.000D-04,-2.000D-04,
+ 4 5.080D-03,-3.610D-03, 1.700D-03, 1.830D-03, 6.800D-04, 4.000D-04,
+ 5-3.580D-03, 6.000D-05,-2.600D-04,-1.050D-03,-3.800D-04,-2.300D-04,
+ 6 2.420D-03, 9.300D-04,-1.000D-04, 4.500D-04, 1.700D-04, 1.100D-04,
+ 1 9.868D-01,-1.171D+00, 3.940D-01,-8.459D-02, 1.124D-02,-1.250D-03,
+ 2 1.001D+00,-1.383D+00, 5.044D-01,-1.152D-01, 1.658D-02,-1.830D-03,
+ 3 4.928D-02,-1.368D-01, 9.021D-02,-2.935D-02, 5.800D-03,-6.600D-04,
+ 4-3.133D-02, 5.785D-02,-2.023D-02, 2.630D-03, 1.600D-04,-8.000D-05,
+ 5 8.840D-03,-1.416D-02, 1.900D-03, 5.800D-04,-2.500D-04, 1.000D-05,
+ 6-2.300D-03, 3.080D-03, 5.500D-04,-3.700D-04, 7.000D-05, 1.000D-05/
+C...Expansion coefficients for charm sea quark distribution.
+ DATA (((CEHLQ(IX,IT,NX,6,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 9.270D-03,-1.817D-02, 9.590D-03,-6.390D-03, 1.690D-03,-1.540D-03,
+ 2 5.710D-03,-1.188D-02, 6.090D-03,-4.650D-03, 1.240D-03,-1.310D-03,
+ 3-3.960D-03, 7.100D-03,-3.590D-03, 1.840D-03,-3.900D-04, 3.400D-04,
+ 4 1.120D-03,-1.960D-03, 1.120D-03,-4.800D-04, 1.000D-04,-4.000D-05,
+ 5 4.000D-05,-3.000D-05,-1.800D-04, 9.000D-05,-5.000D-05,-2.000D-05,
+ 6-4.200D-04, 7.300D-04,-1.600D-04, 5.000D-05, 5.000D-05, 5.000D-05,
+ 1 8.098D-01,-1.042D+00, 3.398D-01,-6.824D-02, 8.760D-03,-9.000D-04,
+ 2 8.961D-01,-1.217D+00, 4.339D-01,-9.287D-02, 1.304D-02,-1.290D-03,
+ 3 3.058D-02,-1.040D-01, 7.604D-02,-2.415D-02, 4.600D-03,-5.000D-04,
+ 4-2.451D-02, 4.432D-02,-1.651D-02, 1.430D-03, 1.200D-04,-1.000D-04,
+ 5 1.122D-02,-1.457D-02, 2.680D-03, 5.800D-04,-1.200D-04, 3.000D-05,
+ 6-7.730D-03, 7.330D-03,-7.600D-04,-2.400D-04, 1.000D-05, 0.000D+00/
+ DATA (((CEHLQ(IX,IT,NX,6,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 9.980D-03,-1.945D-02, 1.055D-02,-6.870D-03, 1.860D-03,-1.560D-03,
+ 2 5.700D-03,-1.203D-02, 6.250D-03,-4.860D-03, 1.310D-03,-1.370D-03,
+ 3-4.490D-03, 7.990D-03,-4.170D-03, 2.050D-03,-4.400D-04, 3.300D-04,
+ 4 1.470D-03,-2.480D-03, 1.460D-03,-5.700D-04, 1.200D-04,-1.000D-05,
+ 5-9.000D-05, 1.500D-04,-3.200D-04, 1.200D-04,-6.000D-05,-4.000D-05,
+ 6-4.200D-04, 7.600D-04,-1.400D-04, 4.000D-05, 7.000D-05, 5.000D-05,
+ 1 8.698D-01,-1.131D+00, 3.836D-01,-8.111D-02, 1.048D-02,-1.300D-03,
+ 2 9.626D-01,-1.321D+00, 4.854D-01,-1.091D-01, 1.583D-02,-1.700D-03,
+ 3 3.057D-02,-1.088D-01, 8.022D-02,-2.676D-02, 5.590D-03,-5.600D-04,
+ 4-2.845D-02, 5.164D-02,-1.918D-02, 2.210D-03,-4.000D-05,-1.500D-04,
+ 5 1.311D-02,-1.751D-02, 3.310D-03, 5.100D-04,-1.200D-04, 5.000D-05,
+ 6-8.590D-03, 8.380D-03,-9.200D-04,-2.600D-04, 1.000D-05,-1.000D-05/
+C...Expansion coefficients for bottom sea quark distribution.
+ DATA (((CEHLQ(IX,IT,NX,7,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 9.010D-03,-1.401D-02, 7.150D-03,-4.130D-03, 1.260D-03,-1.040D-03,
+ 2 6.280D-03,-9.320D-03, 4.780D-03,-2.890D-03, 9.100D-04,-8.200D-04,
+ 3-2.930D-03, 4.090D-03,-1.890D-03, 7.600D-04,-2.300D-04, 1.400D-04,
+ 4 3.900D-04,-1.200D-03, 4.400D-04,-2.500D-04, 2.000D-05,-2.000D-05,
+ 5 2.600D-04, 1.400D-04,-8.000D-05, 1.000D-04, 1.000D-05, 1.000D-05,
+ 6-2.600D-04, 3.200D-04, 1.000D-05,-1.000D-05, 1.000D-05,-1.000D-05,
+ 1 8.029D-01,-1.075D+00, 3.792D-01,-7.843D-02, 1.007D-02,-1.090D-03,
+ 2 7.903D-01,-1.099D+00, 4.153D-01,-9.301D-02, 1.317D-02,-1.410D-03,
+ 3-1.704D-02,-1.130D-02, 2.882D-02,-1.341D-02, 3.040D-03,-3.600D-04,
+ 4-7.200D-04, 7.230D-03,-5.160D-03, 1.080D-03,-5.000D-05,-4.000D-05,
+ 5 3.050D-03,-4.610D-03, 1.660D-03,-1.300D-04,-1.000D-05, 1.000D-05,
+ 6-4.360D-03, 5.230D-03,-1.610D-03, 2.000D-04,-2.000D-05, 0.000D+00/
+ DATA (((CEHLQ(IX,IT,NX,7,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 8.980D-03,-1.459D-02, 7.510D-03,-4.410D-03, 1.310D-03,-1.070D-03,
+ 2 5.970D-03,-9.440D-03, 4.800D-03,-3.020D-03, 9.100D-04,-8.500D-04,
+ 3-3.050D-03, 4.440D-03,-2.100D-03, 8.500D-04,-2.400D-04, 1.400D-04,
+ 4 5.300D-04,-1.300D-03, 5.600D-04,-2.700D-04, 3.000D-05,-2.000D-05,
+ 5 2.000D-04, 1.400D-04,-1.100D-04, 1.000D-04, 0.000D+00, 0.000D+00,
+ 6-2.600D-04, 3.200D-04, 0.000D+00,-3.000D-05, 1.000D-05,-1.000D-05,
+ 1 8.672D-01,-1.174D+00, 4.265D-01,-9.252D-02, 1.244D-02,-1.460D-03,
+ 2 8.500D-01,-1.194D+00, 4.630D-01,-1.083D-01, 1.614D-02,-1.830D-03,
+ 3-2.241D-02,-5.630D-03, 2.815D-02,-1.425D-02, 3.520D-03,-4.300D-04,
+ 4-7.300D-04, 8.030D-03,-5.780D-03, 1.380D-03,-1.300D-04,-4.000D-05,
+ 5 3.460D-03,-5.380D-03, 1.960D-03,-2.100D-04, 1.000D-05, 1.000D-05,
+ 6-4.850D-03, 5.950D-03,-1.890D-03, 2.600D-04,-3.000D-05, 0.000D+00/
+C...Expansion coefficients for top sea quark distribution.
+ DATA (((CEHLQ(IX,IT,NX,8,1),IX=1,6),IT=1,6),NX=1,2)/
+ 1 4.410D-03,-7.480D-03, 3.770D-03,-2.580D-03, 7.300D-04,-7.100D-04,
+ 2 3.840D-03,-6.050D-03, 3.030D-03,-2.030D-03, 5.800D-04,-5.900D-04,
+ 3-8.800D-04, 1.660D-03,-7.500D-04, 4.700D-04,-1.000D-04, 1.000D-04,
+ 4-8.000D-05,-1.500D-04, 1.200D-04,-9.000D-05, 3.000D-05, 0.000D+00,
+ 5 1.300D-04,-2.200D-04,-2.000D-05,-2.000D-05,-2.000D-05,-2.000D-05,
+ 6-7.000D-05, 1.900D-04,-4.000D-05, 2.000D-05, 0.000D+00, 0.000D+00,
+ 1 6.623D-01,-9.248D-01, 3.519D-01,-7.930D-02, 1.110D-02,-1.180D-03,
+ 2 6.380D-01,-9.062D-01, 3.582D-01,-8.479D-02, 1.265D-02,-1.390D-03,
+ 3-2.581D-02, 2.125D-02, 4.190D-03,-4.980D-03, 1.490D-03,-2.100D-04,
+ 4 7.100D-04, 5.300D-04,-1.270D-03, 3.900D-04,-5.000D-05,-1.000D-05,
+ 5 3.850D-03,-5.060D-03, 1.860D-03,-3.500D-04, 4.000D-05, 0.000D+00,
+ 6-3.530D-03, 4.460D-03,-1.500D-03, 2.700D-04,-3.000D-05, 0.000D+00/
+ DATA (((CEHLQ(IX,IT,NX,8,2),IX=1,6),IT=1,6),NX=1,2)/
+ 1 4.260D-03,-7.530D-03, 3.830D-03,-2.680D-03, 7.600D-04,-7.300D-04,
+ 2 3.640D-03,-6.050D-03, 3.030D-03,-2.090D-03, 5.900D-04,-6.000D-04,
+ 3-9.200D-04, 1.710D-03,-8.200D-04, 5.000D-04,-1.200D-04, 1.000D-04,
+ 4-5.000D-05,-1.600D-04, 1.300D-04,-9.000D-05, 3.000D-05, 0.000D+00,
+ 5 1.300D-04,-2.100D-04,-1.000D-05,-2.000D-05,-2.000D-05,-1.000D-05,
+ 6-8.000D-05, 1.800D-04,-5.000D-05, 2.000D-05, 0.000D+00, 0.000D+00,
+ 1 7.146D-01,-1.007D+00, 3.932D-01,-9.246D-02, 1.366D-02,-1.540D-03,
+ 2 6.856D-01,-9.828D-01, 3.977D-01,-9.795D-02, 1.540D-02,-1.790D-03,
+ 3-3.053D-02, 2.758D-02, 2.150D-03,-4.880D-03, 1.640D-03,-2.500D-04,
+ 4 9.200D-04, 4.200D-04,-1.340D-03, 4.600D-04,-8.000D-05,-1.000D-05,
+ 5 4.230D-03,-5.660D-03, 2.140D-03,-4.300D-04, 6.000D-05, 0.000D+00,
+ 6-3.890D-03, 5.000D-03,-1.740D-03, 3.300D-04,-4.000D-05, 0.000D+00/
+
+C...The following data lines are coefficients needed in the
+C...Duke, Owens proton structure function parametrizations, see below.
+C...Expansion coefficients for (up+down) valence quark distribution.
+ DATA ((CDO(IP,IS,1,1),IS=1,6),IP=1,3)/
+ 1 4.190D-01, 3.460D+00, 4.400D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2 4.000D-03, 7.240D-01,-4.860D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 3-7.000D-03,-6.600D-02, 1.330D+00, 0.000D+00, 0.000D+00, 0.000D+00/
+ DATA ((CDO(IP,IS,1,2),IS=1,6),IP=1,3)/
+ 1 3.740D-01, 3.330D+00, 6.030D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2 1.400D-02, 7.530D-01,-6.220D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 3 0.000D+00,-7.600D-02, 1.560D+00, 0.000D+00, 0.000D+00, 0.000D+00/
+C...Expansion coefficients for down valence quark distribution.
+ DATA ((CDO(IP,IS,2,1),IS=1,6),IP=1,3)/
+ 1 7.630D-01, 4.000D+00, 0.000D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2-2.370D-01, 6.270D-01,-4.210D-01, 0.000D+00, 0.000D+00, 0.000D+00,
+ 3 2.600D-02,-1.900D-02, 3.300D-02, 0.000D+00, 0.000D+00, 0.000D+00/
+ DATA ((CDO(IP,IS,2,2),IS=1,6),IP=1,3)/
+ 1 7.610D-01, 3.830D+00, 0.000D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2-2.320D-01, 6.270D-01,-4.180D-01, 0.000D+00, 0.000D+00, 0.000D+00,
+ 3 2.300D-02,-1.900D-02, 3.600D-02, 0.000D+00, 0.000D+00, 0.000D+00/
+C...Expansion coefficients for (up+down+strange) sea quark distribution.
+ DATA ((CDO(IP,IS,3,1),IS=1,6),IP=1,3)/
+ 1 1.265D+00, 0.000D+00, 8.050D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2-1.132D+00,-3.720D-01, 1.590D+00, 6.310D+00,-1.050D+01, 1.470D+01,
+ 3 2.930D-01,-2.900D-02,-1.530D-01,-2.730D-01,-3.170D+00, 9.800D+00/
+ DATA ((CDO(IP,IS,3,2),IS=1,6),IP=1,3)/
+ 1 1.670D+00, 0.000D+00, 9.150D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2-1.920D+00,-2.730D-01, 5.300D-01, 1.570D+01,-1.010D+02, 2.230D+02,
+ 3 5.820D-01,-1.640D-01,-7.630D-01,-2.830D+00, 4.470D+01,-1.170D+02/
+C...Expansion coefficients for charm sea quark distribution.
+ DATA ((CDO(IP,IS,4,1),IS=1,6),IP=1,3)/
+ 1 0.000D+00,-3.600D-02, 6.350D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2 1.350D-01,-2.220D-01, 3.260D+00,-3.030D+00, 1.740D+01,-1.790D+01,
+ 3-7.500D-02,-5.800D-02,-9.090D-01, 1.500D+00,-1.130D+01, 1.560D+01/
+ DATA ((CDO(IP,IS,4,2),IS=1,6),IP=1,3)/
+ 1 0.000D+00,-1.200D-01, 3.510D+00, 0.000D+00, 0.000D+00, 0.000D+00,
+ 2 6.700D-02,-2.330D-01, 3.660D+00,-4.740D-01, 9.500D+00,-1.660D+01,
+ 3-3.100D-02,-2.300D-02,-4.530D-01, 3.580D-01,-5.430D+00, 1.550D+01/
+C...Expansion coefficients for gluon distribution.
+ DATA ((CDO(IP,IS,5,1),IS=1,6),IP=1,3)/
+ 1 1.560D+00, 0.000D+00, 6.000D+00, 9.000D+00, 0.000D+00, 0.000D+00,
+ 2-1.710D+00,-9.490D-01, 1.440D+00,-7.190D+00,-1.650D+01, 1.530D+01,
+ 3 6.380D-01, 3.250D-01,-1.050D+00, 2.550D-01, 1.090D+01,-1.010D+01/
+ DATA ((CDO(IP,IS,5,2),IS=1,6),IP=1,3)/
+ 1 8.790D-01, 0.000D+00, 4.000D+00, 9.000D+00, 0.000D+00, 0.000D+00,
+ 2-9.710D-01,-1.160D+00, 1.230D+00,-5.640D+00,-7.540D+00,-5.960D-01,
+ 3 4.340D-01, 4.760D-01,-2.540D-01,-8.170D-01, 5.500D+00, 1.260D-01/
+
+C...Euler's beta function, requires ordinary Gamma function
+ EULBET(X,Y)=PYGAMM(X)*PYGAMM(Y)/PYGAMM(X+Y)
+
+C...Leading order proton parton distributions from Glueck, Reya and
+C...Vogt. Allowed variable range: 0.25 GeV^2 < Q^2 < 10^8 GeV^2 and
+C...10^-5 < x < 1.
+ IF(MSTP(51).EQ.11) THEN
+
+C...Determine s expansion variable and some x expressions.
+ Q2IN=MIN(1D8,MAX(0.25D0,Q2))
+ SD=LOG(LOG(Q2IN/0.232D0**2)/LOG(0.25D0/0.232D0**2))
+ SD2=SD**2
+ XL=-LOG(X)
+ XS=SQRT(X)
+
+C...Evaluate valence, gluon and sea distributions.
+ XFVUD=(0.663D0+0.191D0*SD-0.041D0*SD2+0.031D0*SD**3)*
+ & X**0.326D0*(1D0+(-1.97D0+6.74D0*SD-1.96D0*SD2)*XS+
+ & (24.4D0-20.7D0*SD+4.08D0*SD2)*X)*
+ & (1D0-X)**(2.86D0+0.70D0*SD-0.02D0*SD2)
+ XFVDD=(0.579D0+0.283D0*SD+0.047D0*SD2)*X**(0.523D0-0.015D0*SD)*
+ & (1D0+(2.22D0-0.59D0*SD-0.27D0*SD2)*XS+(5.95D0-6.19D0*SD+
+ & 1.55D0*SD2)*X)*(1D0-X)**(3.57D0+0.94D0*SD-0.16D0*SD2)
+ XFGLU=(X**(1.00D0-0.17D0*SD)*((4.879D0*SD-1.383D0*SD2)+
+ & (25.92D0-28.97D0*SD+5.596D0*SD2)*X+(-25.69D0+23.68D0*SD-
+ & 1.975D0*SD2)*X**2)+SD**0.558D0*EXP(-(0.595D0+2.138D0*SD)+
+ & SQRT(4.066D0*SD**1.218D0*XL)))*
+ & (1D0-X)**(2.537D0+1.718D0*SD+0.353D0*SD2)
+ XFSEA=(X**(0.412D0-0.171D0*SD)*(0.363D0-1.196D0*X+(1.029D0+
+ & 1.785D0*SD-0.459D0*SD2)*X**2)*XL**(0.566D0-0.496D0*SD)+
+ & SD**1.396D0*EXP(-(3.838D0+1.944D0*SD)+SQRT(2.845D0*SD**1.331D0*
+ & XL)))*(1D0-X)**(4.696D0+2.109D0*SD)
+ XFSTR=SD**0.803D0*(1D0+(-3.055D0+1.024D0*SD**0.67D0)*XS+
+ & (27.4D0-20.0D0*SD**0.154D0)*X)*(1D0-X)**6.22D0*
+ & EXP(-(4.33D0+1.408D0*SD)+SQRT((8.27D0-0.437D0*SD)*
+ & SD**0.563D0*XL))/XL**(2.082D0-0.577D0*SD)
+ IF(SD.LE.0.888D0) THEN
+ XFCHM=0D0
+ ELSE
+ XFCHM=(SD-0.888D0)**1.01D0*(1.+(4.24D0-0.804D0*SD)*X)*
+ & (1D0-X)**(3.46D0+1.076D0*SD)*EXP(-(4.61D0+1.49D0*SD)+
+ & SQRT((2.555D0+1.961D0*SD)*SD**0.37D0*XL))
+ ENDIF
+ IF(SD.LE.1.351D0) THEN
+ XFBOT=0D0
+ ELSE
+ XFBOT=(SD-1.351D0)*(1D0+1.848D0*X)*(1D0-X)**(2.929D0+
+ & 1.396D0*SD)*EXP(-(4.71D0+1.514D0*SD)+
+ & SQRT((4.02D0+1.239D0*SD)*SD**0.51D0*XL))
+ ENDIF
+
+C...Put into output array.
+ XPPR(0)=XFGLU
+ XPPR(1)=XFVDD+XFSEA
+ XPPR(2)=XFVUD-XFVDD+XFSEA
+ XPPR(3)=XFSTR
+ XPPR(4)=XFCHM
+ XPPR(5)=XFBOT
+ XPPR(-1)=XFSEA
+ XPPR(-2)=XFSEA
+ XPPR(-3)=XFSTR
+ XPPR(-4)=XFCHM
+ XPPR(-5)=XFBOT
+
+C...Proton parton distributions from Eichten, Hinchliffe, Lane, Quigg.
+C...Allowed variable range: 5 GeV^2 < Q^2 < 1E8 GeV^2; 1E-4 < x < 1
+ ELSEIF(MSTP(51).EQ.12.OR.MSTP(51).EQ.13) THEN
+
+C...Determine set, Lambda and x and t expansion variables.
+ NSET=MSTP(51)-11
+ IF(NSET.EQ.1) ALAM=0.2D0
+ IF(NSET.EQ.2) ALAM=0.29D0
+ TMIN=LOG(5D0/ALAM**2)
+ TMAX=LOG(1D8/ALAM**2)
+ T=LOG(MAX(1D0,Q2/ALAM**2))
+ VT=MAX(-1D0,MIN(1D0,(2D0*T-TMAX-TMIN)/(TMAX-TMIN)))
+ NX=1
+ IF(X.LE.0.1D0) NX=2
+ IF(NX.EQ.1) VX=(2D0*X-1.1D0)/0.9D0
+ IF(NX.EQ.2) VX=MAX(-1D0,(2D0*LOG(X)+11.51293D0)/6.90776D0)
+
+C...Chebyshev polynomials for x and t expansion.
+ TX(1)=1D0
+ TX(2)=VX
+ TX(3)=2D0*VX**2-1D0
+ TX(4)=4D0*VX**3-3D0*VX
+ TX(5)=8D0*VX**4-8D0*VX**2+1D0
+ TX(6)=16D0*VX**5-20D0*VX**3+5D0*VX
+ TT(1)=1D0
+ TT(2)=VT
+ TT(3)=2D0*VT**2-1D0
+ TT(4)=4D0*VT**3-3D0*VT
+ TT(5)=8D0*VT**4-8D0*VT**2+1D0
+ TT(6)=16D0*VT**5-20D0*VT**3+5D0*VT
+
+C...Calculate structure functions.
+ DO 120 KFL=1,6
+ XQSUM=0D0
+ DO 110 IT=1,6
+ DO 100 IX=1,6
+ XQSUM=XQSUM+CEHLQ(IX,IT,NX,KFL,NSET)*TX(IX)*TT(IT)
+ 100 CONTINUE
+ 110 CONTINUE
+ XQ(KFL)=XQSUM*(1D0-X)**NEHLQ(KFL,NSET)
+ 120 CONTINUE
+
+C...Put into output array.
+ XPPR(0)=XQ(4)
+ XPPR(1)=XQ(2)+XQ(3)
+ XPPR(2)=XQ(1)+XQ(3)
+ XPPR(3)=XQ(5)
+ XPPR(4)=XQ(6)
+ XPPR(-1)=XQ(3)
+ XPPR(-2)=XQ(3)
+ XPPR(-3)=XQ(5)
+ XPPR(-4)=XQ(6)
+
+C...Special expansion for bottom (threshold effects).
+ IF(MSTP(58).GE.5) THEN
+ IF(NSET.EQ.1) TMIN=8.1905D0
+ IF(NSET.EQ.2) TMIN=7.4474D0
+ IF(T.GT.TMIN) THEN
+ VT=MAX(-1D0,MIN(1D0,(2D0*T-TMAX-TMIN)/(TMAX-TMIN)))
+ TT(1)=1D0
+ TT(2)=VT
+ TT(3)=2D0*VT**2-1D0
+ TT(4)=4D0*VT**3-3D0*VT
+ TT(5)=8D0*VT**4-8D0*VT**2+1D0
+ TT(6)=16D0*VT**5-20D0*VT**3+5D0*VT
+ XQSUM=0D0
+ DO 140 IT=1,6
+ DO 130 IX=1,6
+ XQSUM=XQSUM+CEHLQ(IX,IT,NX,7,NSET)*TX(IX)*TT(IT)
+ 130 CONTINUE
+ 140 CONTINUE
+ XPPR(5)=XQSUM*(1D0-X)**NEHLQ(7,NSET)
+ XPPR(-5)=XPPR(5)
+ ENDIF
+ ENDIF
+
+C...Special expansion for top (threshold effects).
+ IF(MSTP(58).GE.6) THEN
+ IF(NSET.EQ.1) TMIN=11.5528D0
+ IF(NSET.EQ.2) TMIN=10.8097D0
+ TMIN=TMIN+2D0*LOG(PMAS(6,1)/30D0)
+ TMAX=TMAX+2D0*LOG(PMAS(6,1)/30D0)
+ IF(T.GT.TMIN) THEN
+ VT=MAX(-1D0,MIN(1D0,(2D0*T-TMAX-TMIN)/(TMAX-TMIN)))
+ TT(1)=1D0
+ TT(2)=VT
+ TT(3)=2D0*VT**2-1D0
+ TT(4)=4D0*VT**3-3D0*VT
+ TT(5)=8D0*VT**4-8D0*VT**2+1D0
+ TT(6)=16D0*VT**5-20D0*VT**3+5D0*VT
+ XQSUM=0D0
+ DO 160 IT=1,6
+ DO 150 IX=1,6
+ XQSUM=XQSUM+CEHLQ(IX,IT,NX,8,NSET)*TX(IX)*TT(IT)
+ 150 CONTINUE
+ 160 CONTINUE
+ XPPR(6)=XQSUM*(1D0-X)**NEHLQ(8,NSET)
+ XPPR(-6)=XPPR(6)
+ ENDIF
+ ENDIF
+
+C...Proton parton distributions from Duke, Owens.
+C...Allowed variable range: 4 GeV^2 < Q^2 < approx 1E6 GeV^2.
+ ELSEIF(MSTP(51).EQ.14.OR.MSTP(51).EQ.15) THEN
+
+C...Determine set, Lambda and s expansion parameter.
+ NSET=MSTP(51)-13
+ IF(NSET.EQ.1) ALAM=0.2D0
+ IF(NSET.EQ.2) ALAM=0.4D0
+ Q2IN=MIN(1D6,MAX(4D0,Q2))
+ SD=LOG(LOG(Q2IN/ALAM**2)/LOG(4D0/ALAM**2))
+
+C...Calculate structure functions.
+ DO 180 KFL=1,5
+ DO 170 IS=1,6
+ TS(IS)=CDO(1,IS,KFL,NSET)+CDO(2,IS,KFL,NSET)*SD+
+ & CDO(3,IS,KFL,NSET)*SD**2
+ 170 CONTINUE
+ IF(KFL.LE.2) THEN
+ XQ(KFL)=X**TS(1)*(1D0-X)**TS(2)*(1D0+TS(3)*X)/(EULBET(TS(1),
+ & TS(2)+1D0)*(1D0+TS(3)*TS(1)/(TS(1)+TS(2)+1D0)))
+ ELSE
+ XQ(KFL)=TS(1)*X**TS(2)*(1D0-X)**TS(3)*(1D0+TS(4)*X+
+ & TS(5)*X**2+TS(6)*X**3)
+ ENDIF
+ 180 CONTINUE
+
+C...Put into output arrays.
+ XPPR(0)=XQ(5)
+ XPPR(1)=XQ(2)+XQ(3)/6D0
+ XPPR(2)=3D0*XQ(1)-XQ(2)+XQ(3)/6D0
+ XPPR(3)=XQ(3)/6D0
+ XPPR(4)=XQ(4)
+ XPPR(-1)=XQ(3)/6D0
+ XPPR(-2)=XQ(3)/6D0
+ XPPR(-3)=XQ(3)/6D0
+ XPPR(-4)=XQ(4)
+
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYHFTH
+C...Gives threshold attractive/repulsive factor for heavy flavour
+C...production.
+
+ FUNCTION PYHFTH(SH,SQM,FRATT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYDAT1/,/PYPARS/,/PYINT1/
+
+C...Value for alpha_strong.
+ IF(MSTP(35).LE.1) THEN
+ ALSSG=PARP(35)
+ ELSE
+ MST115=MSTU(115)
+ MSTU(115)=MSTP(36)
+ Q2BN=SQRT(MAX(1D0,SQM*((SQRT(SH)-2D0*SQRT(SQM))**2+
+ & PARP(36)**2)))
+ ALSSG=PYALPS(Q2BN)
+ MSTU(115)=MST115
+ ENDIF
+
+C...Evaluate attractive and repulsive factors.
+ XATTR=4D0*PARU(1)*ALSSG/(3D0*SQRT(MAX(1D-20,1D0-4D0*SQM/SH)))
+ FATTR=XATTR/(1D0-EXP(-MIN(50D0,XATTR)))
+ XREPU=PARU(1)*ALSSG/(6D0*SQRT(MAX(1D-20,1D0-4D0*SQM/SH)))
+ FREPU=XREPU/(EXP(MIN(50D0,XREPU))-1D0)
+ PYHFTH=FRATT*FATTR+(1D0-FRATT)*FREPU
+ VINT(138)=PYHFTH
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSPLI
+C...Splits a hadron remnant into two (partons or hadron + parton)
+C...in case it is more complicated than just a quark or a diquark.
+
+ SUBROUTINE PYSPLI(KF,KFLIN,KFLCH,KFLSP)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks. PYDAT1 temporary
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYPARS/,/PYINT1/,/PYDAT1/
+C...Local array.
+ DIMENSION KFL(3)
+
+C...Preliminaries. Parton composition.
+ KFA=IABS(KF)
+ KFS=ISIGN(1,KF)
+ KFL(1)=MOD(KFA/1000,10)
+ KFL(2)=MOD(KFA/100,10)
+ KFL(3)=MOD(KFA/10,10)
+ IF(KFA.EQ.22.AND.MINT(109).EQ.2) THEN
+ KFL(2)=INT(1.5D0+PYR(0))
+ IF(MINT(105).EQ.333) KFL(2)=3
+ IF(MINT(105).EQ.443) KFL(2)=4
+ KFL(3)=KFL(2)
+ ELSEIF((KFA.EQ.111.OR.KFA.EQ.113).AND.PYR(0).GT.0.5D0) THEN
+ KFL(2)=2
+ KFL(3)=2
+ ELSEIF(KFA.EQ.223.AND.PYR(0).GT.0.5D0) THEN
+ KFL(2)=1
+ KFL(3)=1
+ ELSEIF((KFA.EQ.130.OR.KFA.EQ.310).AND.PYR(0).GT.0.5D0) THEN
+ KFL(2)=MOD(KFA/10,10)
+ KFL(3)=MOD(KFA/100,10)
+ ENDIF
+ IF(KFLIN.NE.21.AND.KFLIN.NE.22.AND.KFLIN.NE.23) THEN
+ KFLR=KFLIN*KFS
+ ELSE
+ KFLR=KFLIN
+ ENDIF
+ KFLCH=0
+
+C...Subdivide lepton.
+ IF(KFA.GE.11.AND.KFA.LE.18) THEN
+ IF(KFLR.EQ.KFA) THEN
+ KFLSP=KFS*22
+ ELSEIF(KFLR.EQ.22) THEN
+ KFLSP=KFA
+ ELSEIF(KFLR.EQ.-24.AND.MOD(KFA,2).EQ.1) THEN
+ KFLSP=KFA+1
+ ELSEIF(KFLR.EQ.24.AND.MOD(KFA,2).EQ.0) THEN
+ KFLSP=KFA-1
+ ELSEIF(KFLR.EQ.21) THEN
+ KFLSP=KFA
+ KFLCH=KFS*21
+ ELSE
+ KFLSP=KFA
+ KFLCH=-KFLR
+ ENDIF
+
+C...Subdivide photon.
+ ELSEIF(KFA.EQ.22.AND.MINT(109).NE.2) THEN
+ IF(KFLR.NE.21) THEN
+ KFLSP=-KFLR
+ ELSE
+ RAGR=0.75D0*PYR(0)
+ KFLSP=1
+ IF(RAGR.GT.0.125D0) KFLSP=2
+ IF(RAGR.GT.0.625D0) KFLSP=3
+ IF(PYR(0).GT.0.5D0) KFLSP=-KFLSP
+ KFLCH=-KFLSP
+ ENDIF
+
+C...Subdivide Reggeon or Pomeron.
+ ELSEIF(KFA.EQ.110.OR.KFA.EQ.990) THEN
+ IF(KFLIN.EQ.21) THEN
+ KFLSP=KFS*21
+ ELSE
+ KFLSP=-KFLIN
+ ENDIF
+
+C...Subdivide meson.
+ ELSEIF(KFL(1).EQ.0) THEN
+ KFL(2)=KFL(2)*(-1)**KFL(2)
+ KFL(3)=-KFL(3)*(-1)**IABS(KFL(2))
+ IF(KFLR.EQ.KFL(2)) THEN
+ KFLSP=KFL(3)
+ ELSEIF(KFLR.EQ.KFL(3)) THEN
+ KFLSP=KFL(2)
+ ELSEIF(KFLR.EQ.21.AND.PYR(0).GT.0.5D0) THEN
+ KFLSP=KFL(2)
+ KFLCH=KFL(3)
+ ELSEIF(KFLR.EQ.21) THEN
+ KFLSP=KFL(3)
+ KFLCH=KFL(2)
+ ELSEIF(KFLR*KFL(2).GT.0) THEN
+ NTRY=0
+ 100 NTRY=NTRY+1
+ CALL PYKFDI(-KFLR,KFL(2),KFDUMP,KFLCH)
+ IF(KFLCH.EQ.0.AND.NTRY.LT.100) THEN
+ GOTO 100
+ ELSEIF(KFLCH.EQ.0) THEN
+ CALL PYERRM(14,'(PYSPLI:) caught in infinite loop')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ KFLSP=KFL(3)
+ ELSE
+ NTRY=0
+ 110 NTRY=NTRY+1
+ CALL PYKFDI(-KFLR,KFL(3),KFDUMP,KFLCH)
+ IF(KFLCH.EQ.0.AND.NTRY.LT.100) THEN
+ GOTO 110
+ ELSEIF(KFLCH.EQ.0) THEN
+ CALL PYERRM(14,'(PYSPLI:) caught in infinite loop')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ KFLSP=KFL(2)
+ ENDIF
+
+C...Special case for extracting photon from baryon without splitting
+C...the latter. (Currently only used by external programs.)
+ ELSEIF(KFLIN.EQ.22.AND.MSTP(98).EQ.1) then
+ KFLSP=KFA
+ KFLCH=0
+
+C...Subdivide baryon.
+ ELSE
+ NAGR=0
+ DO 120 J=1,3
+ IF(KFLR.EQ.KFL(J)) NAGR=NAGR+1
+ 120 CONTINUE
+ IF(NAGR.GE.1) THEN
+ RAGR=0.00001D0+(NAGR-0.00002D0)*PYR(0)
+ IAGR=0
+ DO 130 J=1,3
+ IF(KFLR.EQ.KFL(J)) RAGR=RAGR-1D0
+ IF(IAGR.EQ.0.AND.RAGR.LE.0D0) IAGR=J
+ 130 CONTINUE
+ ELSE
+ IAGR=1.00001D0+2.99998D0*PYR(0)
+ ENDIF
+ ID1=1
+ IF(IAGR.EQ.1) ID1=2
+ IF(IAGR.EQ.1.AND.KFL(3).GT.KFL(2)) ID1=3
+ ID2=6-IAGR-ID1
+ KSP=3
+ IF(MOD(KFA,10).EQ.2.AND.KFL(1).EQ.KFL(2)) THEN
+ IF(IAGR.NE.3.AND.PYR(0).GT.0.25D0) KSP=1
+ ELSEIF(MOD(KFA,10).EQ.2.AND.KFL(2).GE.KFL(3)) THEN
+ IF(IAGR.NE.1.AND.PYR(0).GT.0.25D0) KSP=1
+ ELSEIF(MOD(KFA,10).EQ.2) THEN
+ IF(IAGR.EQ.1) KSP=1
+ IF(IAGR.NE.1.AND.PYR(0).GT.0.75D0) KSP=1
+ ENDIF
+ KFLSP=1000*KFL(ID1)+100*KFL(ID2)+KSP
+ IF(KFLR.EQ.21) THEN
+ KFLCH=KFL(IAGR)
+ ELSEIF(NAGR.EQ.0.AND.KFLR.GT.0) THEN
+ NTRY=0
+ 140 NTRY=NTRY+1
+ CALL PYKFDI(-KFLR,KFL(IAGR),KFDUMP,KFLCH)
+ IF(KFLCH.EQ.0.AND.NTRY.LT.100) THEN
+ GOTO 140
+ ELSEIF(KFLCH.EQ.0) THEN
+ CALL PYERRM(14,'(PYSPLI:) caught in infinite loop')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ ELSEIF(NAGR.EQ.0) THEN
+ NTRY=0
+ 150 NTRY=NTRY+1
+ CALL PYKFDI(10000*KFL(ID1)+KFLSP,-KFLR,KFDUMP,KFLCH)
+ IF(KFLCH.EQ.0.AND.NTRY.LT.100) THEN
+ GOTO 150
+ ELSEIF(KFLCH.EQ.0) THEN
+ CALL PYERRM(14,'(PYSPLI:) caught in infinite loop')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ KFLSP=KFL(IAGR)
+ ENDIF
+ ENDIF
+
+C...Add on correct sign for result.
+ KFLCH=KFLCH*KFS
+ KFLSP=KFLSP*KFS
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGAMM
+C...Gives ordinary Gamma function Gamma(x) for positive, real arguments;
+C...see M. Abramowitz, I. A. Stegun: Handbook of Mathematical Functions
+C...(Dover, 1965) 6.1.36.
+
+ FUNCTION PYGAMM(X)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Local array and data.
+ DIMENSION B(8)
+ DATA B/-0.577191652D0,0.988205891D0,-0.897056937D0,0.918206857D0,
+ &-0.756704078D0,0.482199394D0,-0.193527818D0,0.035868343D0/
+
+ NX=INT(X)
+ DX=X-NX
+
+ PYGAMM=1D0
+ DXP=1D0
+ DO 100 I=1,8
+ DXP=DXP*DX
+ PYGAMM=PYGAMM+B(I)*DXP
+ 100 CONTINUE
+ IF(X.LT.1D0) THEN
+ PYGAMM=PYGAMM/X
+ ELSE
+ DO 110 IX=1,NX-1
+ PYGAMM=(X-IX)*PYGAMM
+ 110 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYWAUX
+C...Calculates real and imaginary parts of the auxiliary functions W1
+C...and W2; see R. K. Ellis, I. Hinchliffe, M. Soldate and J. J. van
+C...der Bij, Nucl. Phys. B297 (1988) 221.
+
+ SUBROUTINE PYWAUX(IAUX,EPS,WRE,WIM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+ ASINH(X)=LOG(X+SQRT(X**2+1D0))
+ ACOSH(X)=LOG(X+SQRT(X**2-1D0))
+
+ IF(EPS.LT.0D0) THEN
+ IF(IAUX.EQ.1) WRE=2D0*SQRT(1D0-EPS)*ASINH(SQRT(-1D0/EPS))
+ IF(IAUX.EQ.2) WRE=4D0*(ASINH(SQRT(-1D0/EPS)))**2
+ WIM=0D0
+ ELSEIF(EPS.LT.1D0) THEN
+ IF(IAUX.EQ.1) WRE=2D0*SQRT(1D0-EPS)*ACOSH(SQRT(1D0/EPS))
+ IF(IAUX.EQ.2) WRE=4D0*(ACOSH(SQRT(1D0/EPS)))**2-PARU(1)**2
+ IF(IAUX.EQ.1) WIM=-PARU(1)*SQRT(1D0-EPS)
+ IF(IAUX.EQ.2) WIM=-4D0*PARU(1)*ACOSH(SQRT(1D0/EPS))
+ ELSE
+ IF(IAUX.EQ.1) WRE=2D0*SQRT(EPS-1D0)*ASIN(SQRT(1D0/EPS))
+ IF(IAUX.EQ.2) WRE=-4D0*(ASIN(SQRT(1D0/EPS)))**2
+ WIM=0D0
+ ENDIF
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYI3AU
+C...Calculates real and imaginary parts of the auxiliary function I3;
+C...see R. K. Ellis, I. Hinchliffe, M. Soldate and J. J. van der Bij,
+C...Nucl. Phys. B297 (1988) 221.
+
+ SUBROUTINE PYI3AU(EPS,RAT,Y3RE,Y3IM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+ BE=0.5D0*(1D0+SQRT(1D0+RAT*EPS))
+ IF(EPS.LT.1D0) GA=0.5D0*(1D0+SQRT(1D0-EPS))
+
+ IF(EPS.LT.0D0) THEN
+ IF(ABS(EPS).LT.1D-4.AND.ABS(RAT*EPS).LT.1D-4) THEN
+ F3RE=PYSPEN(-0.25D0*EPS/(1D0+0.25D0*(RAT-1D0)*EPS),0D0,1)-
+ & PYSPEN((1D0-0.25D0*EPS)/(1D0+0.25D0*(RAT-1D0)*EPS),0D0,1)+
+ & PYSPEN(0.25D0*(RAT+1D0)*EPS/(1D0+0.25D0*RAT*EPS),0D0,1)-
+ & PYSPEN((RAT+1D0)/RAT,0D0,1)+0.5D0*(LOG(1D0+0.25D0*RAT*EPS)**2-
+ & LOG(0.25D0*RAT*EPS)**2)+LOG(1D0-0.25D0*EPS)*
+ & LOG((1D0+0.25D0*(RAT-1D0)*EPS)/(1D0+0.25D0*RAT*EPS))+
+ & LOG(-0.25D0*EPS)*LOG(0.25D0*RAT*EPS/(1D0+0.25D0*(RAT-1D0)*
+ & EPS))
+ ELSEIF(ABS(EPS).LT.1D-4.AND.ABS(RAT*EPS).GE.1D-4) THEN
+ F3RE=PYSPEN(-0.25D0*EPS/(BE-0.25D0*EPS),0D0,1)-
+ & PYSPEN((1D0-0.25D0*EPS)/(BE-0.25D0*EPS),0D0,1)+
+ & PYSPEN((BE-1D0+0.25D0*EPS)/BE,0D0,1)-
+ & PYSPEN((BE-1D0+0.25D0*EPS)/(BE-1D0),0D0,1)+
+ & 0.5D0*(LOG(BE)**2-LOG(BE-1D0)**2)+
+ & LOG(1D0-0.25D0*EPS)*LOG((BE-0.25D0*EPS)/BE)+
+ & LOG(-0.25D0*EPS)*LOG((BE-1D0)/(BE-0.25D0*EPS))
+ ELSEIF(ABS(EPS).GE.1D-4.AND.ABS(RAT*EPS).LT.1D-4) THEN
+ F3RE=PYSPEN((GA-1D0)/(GA+0.25D0*RAT*EPS),0D0,1)-
+ & PYSPEN(GA/(GA+0.25D0*RAT*EPS),0D0,1)+
+ & PYSPEN((1D0+0.25D0*RAT*EPS-GA)/(1D0+0.25D0*RAT*EPS),0D0,1)-
+ & PYSPEN((1D0+0.25D0*RAT*EPS-GA)/(0.25D0*RAT*EPS),0D0,1)+
+ & 0.5D0*(LOG(1D0+0.25D0*RAT*EPS)**2-LOG(0.25D0*RAT*EPS)**2)+
+ & LOG(GA)*LOG((GA+0.25D0*RAT*EPS)/(1D0+0.25D0*RAT*EPS))+
+ & LOG(GA-1D0)*LOG(0.25D0*RAT*EPS/(GA+0.25D0*RAT*EPS))
+ ELSE
+ F3RE=PYSPEN((GA-1D0)/(GA+BE-1D0),0D0,1)-
+ & PYSPEN(GA/(GA+BE-1D0),0D0,1)+PYSPEN((BE-GA)/BE,0D0,1)-
+ & PYSPEN((BE-GA)/(BE-1D0),0D0,1)+0.5D0*(LOG(BE)**2-
+ & LOG(BE-1D0)**2)+LOG(GA)*LOG((GA+BE-1D0)/BE)+
+ & LOG(GA-1D0)*LOG((BE-1D0)/(GA+BE-1D0))
+ ENDIF
+ F3IM=0D0
+ ELSEIF(EPS.LT.1D0) THEN
+ IF(ABS(EPS).LT.1D-4.AND.ABS(RAT*EPS).LT.1D-4) THEN
+ F3RE=PYSPEN(-0.25D0*EPS/(1D0+0.25D0*(RAT-1D0)*EPS),0D0,1)-
+ & PYSPEN((1D0-0.25D0*EPS)/(1D0+0.25D0*(RAT-1D0)*EPS),0D0,1)+
+ & PYSPEN((1D0-0.25D0*EPS)/(-0.25D0*(RAT+1D0)*EPS),0D0,1)-
+ & PYSPEN(1D0/(RAT+1D0),0D0,1)+LOG((1D0-0.25D0*EPS)/
+ & (0.25D0*EPS))*LOG((1D0+0.25D0*(RAT-1D0)*EPS)/
+ & (0.25D0*(RAT+1D0)*EPS))
+ F3IM=-PARU(1)*LOG((1D0+0.25D0*(RAT-1D0)*EPS)/
+ & (0.25D0*(RAT+1D0)*EPS))
+ ELSEIF(ABS(EPS).LT.1D-4.AND.ABS(RAT*EPS).GE.1D-4) THEN
+ F3RE=PYSPEN(-0.25D0*EPS/(BE-0.25D0*EPS),0D0,1)-
+ & PYSPEN((1D0-0.25D0*EPS)/(BE-0.25D0*EPS),0D0,1)+
+ & PYSPEN((1D0-0.25D0*EPS)/(1D0-0.25D0*EPS-BE),0D0,1)-
+ & PYSPEN(-0.25D0*EPS/(1D0-0.25D0*EPS-BE),0D0,1)+
+ & LOG((1D0-0.25D0*EPS)/(0.25D0*EPS))*
+ & LOG((BE-0.25D0*EPS)/(BE-1D0+0.25D0*EPS))
+ F3IM=-PARU(1)*LOG((BE-0.25D0*EPS)/(BE-1D0+0.25D0*EPS))
+ ELSEIF(ABS(EPS).GE.1D-4.AND.ABS(RAT*EPS).LT.1D-4) THEN
+ F3RE=PYSPEN((GA-1D0)/(GA+0.25D0*RAT*EPS),0D0,1)-
+ & PYSPEN(GA/(GA+0.25D0*RAT*EPS),0D0,1)+
+ & PYSPEN(GA/(GA-1D0-0.25D0*RAT*EPS),0D0,1)-
+ & PYSPEN((GA-1D0)/(GA-1D0-0.25D0*RAT*EPS),0D0,1)+
+ & LOG(GA/(1D0-GA))*LOG((GA+0.25D0*RAT*EPS)/
+ & (1D0+0.25D0*RAT*EPS-GA))
+ F3IM=-PARU(1)*LOG((GA+0.25D0*RAT*EPS)/
+ & (1D0+0.25D0*RAT*EPS-GA))
+ ELSE
+ F3RE=PYSPEN((GA-1D0)/(GA+BE-1D0),0D0,1)-
+ & PYSPEN(GA/(GA+BE-1D0),0D0,1)+PYSPEN(GA/(GA-BE),0D0,1)-
+ & PYSPEN((GA-1D0)/(GA-BE),0D0,1)+LOG(GA/(1D0-GA))*
+ & LOG((GA+BE-1D0)/(BE-GA))
+ F3IM=-PARU(1)*LOG((GA+BE-1D0)/(BE-GA))
+ ENDIF
+ ELSE
+ RSQ=EPS/(EPS-1D0+(2D0*BE-1D0)**2)
+ RCTHE=RSQ*(1D0-2D0*BE/EPS)
+ RSTHE=SQRT(MAX(0D0,RSQ-RCTHE**2))
+ RCPHI=RSQ*(1D0+2D0*(BE-1D0)/EPS)
+ RSPHI=SQRT(MAX(0D0,RSQ-RCPHI**2))
+ R=SQRT(RSQ)
+ THE=ACOS(MAX(-0.999999D0,MIN(0.999999D0,RCTHE/R)))
+ PHI=ACOS(MAX(-0.999999D0,MIN(0.999999D0,RCPHI/R)))
+ F3RE=PYSPEN(RCTHE,RSTHE,1)+PYSPEN(RCTHE,-RSTHE,1)-
+ & PYSPEN(RCPHI,RSPHI,1)-PYSPEN(RCPHI,-RSPHI,1)+
+ & (PHI-THE)*(PHI+THE-PARU(1))
+ F3IM=PYSPEN(RCTHE,RSTHE,2)+PYSPEN(RCTHE,-RSTHE,2)-
+ & PYSPEN(RCPHI,RSPHI,2)-PYSPEN(RCPHI,-RSPHI,2)
+ ENDIF
+
+ Y3RE=2D0/(2D0*BE-1D0)*F3RE
+ Y3IM=2D0/(2D0*BE-1D0)*F3IM
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYSPEN
+C...Calculates real and imaginary part of Spence function; see
+C...G. 't Hooft and M. Veltman, Nucl. Phys. B153 (1979) 365.
+
+ FUNCTION PYSPEN(XREIN,XIMIN,IREIM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+C...Local array and data.
+ DIMENSION B(0:14)
+ DATA B/
+ &1.000000D+00, -5.000000D-01, 1.666667D-01,
+ &0.000000D+00, -3.333333D-02, 0.000000D+00,
+ &2.380952D-02, 0.000000D+00, -3.333333D-02,
+ &0.000000D+00, 7.575757D-02, 0.000000D+00,
+ &-2.531135D-01, 0.000000D+00, 1.166667D+00/
+
+ XRE=XREIN
+ XIM=XIMIN
+ IF(ABS(1D0-XRE).LT.1D-6.AND.ABS(XIM).LT.1D-6) THEN
+ IF(IREIM.EQ.1) PYSPEN=PARU(1)**2/6D0
+ IF(IREIM.EQ.2) PYSPEN=0D0
+ RETURN
+ ENDIF
+
+ XMOD=SQRT(XRE**2+XIM**2)
+ IF(XMOD.LT.1D-6) THEN
+ IF(IREIM.EQ.1) PYSPEN=0D0
+ IF(IREIM.EQ.2) PYSPEN=0D0
+ RETURN
+ ENDIF
+
+ XARG=SIGN(ACOS(XRE/XMOD),XIM)
+ SP0RE=0D0
+ SP0IM=0D0
+ SGN=1D0
+ IF(XMOD.GT.1D0) THEN
+ ALGXRE=LOG(XMOD)
+ ALGXIM=XARG-SIGN(PARU(1),XARG)
+ SP0RE=-PARU(1)**2/6D0-(ALGXRE**2-ALGXIM**2)/2D0
+ SP0IM=-ALGXRE*ALGXIM
+ SGN=-1D0
+ XMOD=1D0/XMOD
+ XARG=-XARG
+ XRE=XMOD*COS(XARG)
+ XIM=XMOD*SIN(XARG)
+ ENDIF
+ IF(XRE.GT.0.5D0) THEN
+ ALGXRE=LOG(XMOD)
+ ALGXIM=XARG
+ XRE=1D0-XRE
+ XIM=-XIM
+ XMOD=SQRT(XRE**2+XIM**2)
+ XARG=SIGN(ACOS(XRE/XMOD),XIM)
+ ALGYRE=LOG(XMOD)
+ ALGYIM=XARG
+ SP0RE=SP0RE+SGN*(PARU(1)**2/6D0-(ALGXRE*ALGYRE-ALGXIM*ALGYIM))
+ SP0IM=SP0IM-SGN*(ALGXRE*ALGYIM+ALGXIM*ALGYRE)
+ SGN=-SGN
+ ENDIF
+
+ XRE=1D0-XRE
+ XIM=-XIM
+ XMOD=SQRT(XRE**2+XIM**2)
+ XARG=SIGN(ACOS(XRE/XMOD),XIM)
+ ZRE=-LOG(XMOD)
+ ZIM=-XARG
+
+ SPRE=0D0
+ SPIM=0D0
+ SAVERE=1D0
+ SAVEIM=0D0
+ DO 100 I=0,14
+ IF(MAX(ABS(SAVERE),ABS(SAVEIM)).LT.1D-30) GOTO 110
+ TERMRE=(SAVERE*ZRE-SAVEIM*ZIM)/DBLE(I+1)
+ TERMIM=(SAVERE*ZIM+SAVEIM*ZRE)/DBLE(I+1)
+ SAVERE=TERMRE
+ SAVEIM=TERMIM
+ SPRE=SPRE+B(I)*TERMRE
+ SPIM=SPIM+B(I)*TERMIM
+ 100 CONTINUE
+
+ 110 IF(IREIM.EQ.1) PYSPEN=SP0RE+SGN*SPRE
+ IF(IREIM.EQ.2) PYSPEN=SP0IM+SGN*SPIM
+
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYQQBH
+C...Calculates the matrix element for the processes
+C...g + g or q + qbar -> Q + Qbar + H (normally with Q = t).
+C...REDUCE output and part of the rest courtesy Z. Kunszt, see
+C...Z. Kunszt, Nucl. Phys. B247 (1984) 339.
+
+ SUBROUTINE PYQQBH(WTQQBH)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,/PYINT2/
+C...Local arrays and function.
+ DIMENSION PP(15,4),CLR(8,8),FM(10,10),RM(8,8),DX(8)
+ DOT(I,J)=PP(I,4)*PP(J,4)-PP(I,1)*PP(J,1)-PP(I,2)*PP(J,2)-
+ &PP(I,3)*PP(J,3)
+
+C...Mass parameters.
+ WTQQBH=0D0
+ ISUB=MINT(1)
+ SHPR=SQRT(VINT(26))*VINT(1)
+ PQ=PMAS(PYCOMP(KFPR(ISUB,2)),1)
+ PH=SQRT(VINT(21))*VINT(1)
+ SPQ=PQ**2
+ SPH=PH**2
+
+C...Set up outgoing kinematics: 1=t, 2=tbar, 3=H.
+ DO 100 I=1,2
+ PT=SQRT(MAX(0D0,VINT(197+5*I)))
+ PP(I,1)=PT*COS(VINT(198+5*I))
+ PP(I,2)=PT*SIN(VINT(198+5*I))
+ 100 CONTINUE
+ PP(3,1)=-PP(1,1)-PP(2,1)
+ PP(3,2)=-PP(1,2)-PP(2,2)
+ PMS1=SPQ+PP(1,1)**2+PP(1,2)**2
+ PMS2=SPQ+PP(2,1)**2+PP(2,2)**2
+ PMS3=SPH+PP(3,1)**2+PP(3,2)**2
+ PMT3=SQRT(PMS3)
+ PP(3,3)=PMT3*SINH(VINT(211))
+ PP(3,4)=PMT3*COSH(VINT(211))
+ PMS12=(SHPR-PP(3,4))**2-PP(3,3)**2
+ PP(1,3)=(-PP(3,3)*(PMS12+PMS1-PMS2)+
+ &VINT(213)*(SHPR-PP(3,4))*VINT(220))/(2D0*PMS12)
+ PP(2,3)=-PP(1,3)-PP(3,3)
+ PP(1,4)=SQRT(PMS1+PP(1,3)**2)
+ PP(2,4)=SQRT(PMS2+PP(2,3)**2)
+
+C...Set up incoming kinematics and derived momentum combinations.
+ DO 110 I=4,5
+ PP(I,1)=0D0
+ PP(I,2)=0D0
+ PP(I,3)=-0.5D0*SHPR*(-1)**I
+ PP(I,4)=-0.5D0*SHPR
+ 110 CONTINUE
+ DO 120 J=1,4
+ PP(6,J)=PP(1,J)+PP(2,J)
+ PP(7,J)=PP(1,J)+PP(3,J)
+ PP(8,J)=PP(1,J)+PP(4,J)
+ PP(9,J)=PP(1,J)+PP(5,J)
+ PP(10,J)=-PP(2,J)-PP(3,J)
+ PP(11,J)=-PP(2,J)-PP(4,J)
+ PP(12,J)=-PP(2,J)-PP(5,J)
+ PP(13,J)=-PP(4,J)-PP(5,J)
+ 120 CONTINUE
+
+C...Derived kinematics invariants.
+ X1=DOT(1,2)
+ X2=DOT(1,3)
+ X3=DOT(1,4)
+ X4=DOT(1,5)
+ X5=DOT(2,3)
+ X6=DOT(2,4)
+ X7=DOT(2,5)
+ X8=DOT(3,4)
+ X9=DOT(3,5)
+ X10=DOT(4,5)
+
+C...Propagators.
+ SS1=DOT(7,7)-SPQ
+ SS2=DOT(8,8)-SPQ
+ SS3=DOT(9,9)-SPQ
+ SS4=DOT(10,10)-SPQ
+ SS5=DOT(11,11)-SPQ
+ SS6=DOT(12,12)-SPQ
+ SS7=DOT(13,13)
+ DX(1)=SS1*SS6
+ DX(2)=SS2*SS6
+ DX(3)=SS2*SS4
+ DX(4)=SS1*SS5
+ DX(5)=SS3*SS5
+ DX(6)=SS3*SS4
+ DX(7)=SS7*SS1
+ DX(8)=SS7*SS4
+
+C...Define colour coefficients for g + g -> Q + Qbar + H.
+ IF(ISUB.EQ.121.OR.ISUB.EQ.181.OR.ISUB.EQ.186) THEN
+ DO 140 I=1,3
+ DO 130 J=1,3
+ CLR(I,J)=16D0/3D0
+ CLR(I+3,J+3)=16D0/3D0
+ CLR(I,J+3)=-2D0/3D0
+ CLR(I+3,J)=-2D0/3D0
+ 130 CONTINUE
+ 140 CONTINUE
+ DO 160 L=1,2
+ DO 150 I=1,3
+ CLR(I,6+L)=-6D0
+ CLR(I+3,6+L)=6D0
+ CLR(6+L,I)=-6D0
+ CLR(6+L,I+3)=6D0
+ 150 CONTINUE
+ 160 CONTINUE
+ DO 180 K1=1,2
+ DO 170 K2=1,2
+ CLR(6+K1,6+K2)=12D0
+ 170 CONTINUE
+ 180 CONTINUE
+
+C...Evaluate matrix elements for g + g -> Q + Qbar + H.
+ FM(1,1)=64*PQ**6+16*PQ**4*PH**2+32*PQ**4*(X1+2*X2+X4+X9+2*
+ & X7+X5)+8*PQ**2*PH**2*(-X1-X4+2*X7)+16*PQ**2*(X2*X9+4*X2*
+ & X7+X2*X5-2*X4*X7-2*X9*X7)+8*PH**2*X4*X7-16*X2*X9*X7
+ FM(1,2)=16*PQ**6+8*PQ**4*(-2*X1+X2-2*X3-2*X4-4*X10+X9-X8+2
+ & *X7-4*X6+X5)+8*PQ**2*(-2*X1*X2-2*X2*X4-2*X2*X10+X2*X7-2*
+ & X2*X6-2*X3*X7+2*X4*X7+4*X10*X7-X9*X7-X8*X7)+16*X2*X7*(X4+
+ & X10)
+ FM(1,3)=16*PQ**6-4*PQ**4*PH**2+8*PQ**4*(-2*X1+2*X2-2*X3-4*
+ & X4-8*X10+X9+X8-2*X7-4*X6+2*X5)-(4*PQ**2*PH**2)*(X1+X4+X10
+ & +X6)+8*PQ**2*(-2*X1*X2-2*X1*X10+X1*X9+X1*X8-2*X1*X5+X2**2
+ & -4*X2*X4-5*X2*X10+X2*X8-X2*X7-3*X2*X6+X2*X5+X3*X9+2*X3*X7
+ & -X3*X5+X4*X8+2*X4*X6-3*X4*X5-5*X10*X5+X9*X8+X9*X6+X9*X5+
+ & X8*X7-4*X6*X5+X5**2)-(16*X2*X5)*(X1+X4+X10+X6)
+ FM(1,4)=16*PQ**6+4*PQ**4*PH**2+16*PQ**4*(-X1+X2-X3-X4+X10-
+ & X9-X8+2*X7+2*X6-X5)+4*PQ**2*PH**2*(X1+X3+X4+X10+2*X7+2*X6
+ & )+8*PQ**2*(4*X1*X10+4*X1*X7+4*X1*X6+2*X2*X10-X2*X9-X2*X8+
+ & 4*X2*X7+4*X2*X6-X2*X5+4*X10*X5+4*X7*X5+4*X6*X5)-(8*PH**2*
+ & X1)*(X10+X7+X6)+16*X2*X5*(X10+X7+X6)
+ FM(1,5)=8*PQ**4*(-2*X1-2*X4+X10-X9)+4*PQ**2*(4*X1**2-2*X1*
+ & X2+8*X1*X3+6*X1*X10-2*X1*X9+4*X1*X8+4*X1*X7+4*X1*X6+2*X1*
+ & X5+X2*X10+4*X3*X4-X3*X9+2*X3*X7+3*X4*X8-2*X4*X6+2*X4*X5-4
+ & *X10*X7+3*X10*X5-3*X9*X6+3*X8*X7-4*X7**2+4*X7*X5)+8*(X1**
+ & 2*X9-X1**2*X8-X1*X2*X7+X1*X2*X6+X1*X3*X9+X1*X3*X5-X1*X4*
+ & X8-X1*X4*X5+X1*X10*X9+X1*X9*X7+X1*X9*X6-X1*X8*X7-X2*X3*X7
+ & +X2*X4*X6-X2*X10*X7-X2*X7**2+X3*X7*X5-X4*X10*X5-X4*X7*X5-
+ & X4*X6*X5)
+ FM(1,6)=16*PQ**4*(-4*X1-X4+X9-X7)+4*PQ**2*PH**2*(-2*X1-X4-
+ & X7)+16*PQ**2*(-2*X1**2-3*X1*X2-2*X1*X4-3*X1*X9-2*X1*X7-3*
+ & X1*X5-2*X2*X4-2*X7*X5)-8*PH**2*X4*X7+8*(-X1*X2*X9-2*X1*X2
+ & *X5-X1*X9**2-X1*X9*X5+X2**2*X7-X2*X4*X5+X2*X9*X7-X2*X7*X5
+ & +X4*X9*X5+X4*X5**2)
+ FM(1,7)=8*PQ**4*(2*X3+X4+3*X10+X9+2*X8+3*X7+6*X6)+2*PQ**2*
+ & PH**2*(-2*X3-X4+3*X10+3*X7+6*X6)+4*PQ**2*(4*X1*X10+4*X1*
+ & X7+8*X1*X6+6*X2*X10+X2*X9+2*X2*X8+6*X2*X7+12*X2*X6-8*X3*
+ & X7+4*X4*X7+4*X4*X6+4*X10*X5+4*X9*X7+4*X9*X6-8*X8*X7+4*X7*
+ & X5+8*X6*X5)+4*PH**2*(-X1*X10-X1*X7-2*X1*X6+2*X3*X7-X4*X7-
+ & X4*X6)+8*X2*(X10*X5+X9*X7+X9*X6-2*X8*X7+X7*X5+2*X6*X5)
+ FM(1,8)=8*PQ**4*(2*X3+X4+3*X10+2*X9+X8+3*X7+6*X6)+2*PQ**2*
+ & PH**2*(-2*X3-X4+2*X10+X7+2*X6)+4*PQ**2*(4*X1*X10-2*X1*X9+
+ & 2*X1*X8+4*X1*X7+8*X1*X6+5*X2*X10+2*X2*X9+X2*X8+4*X2*X7+8*
+ & X2*X6-X3*X9-8*X3*X7+2*X3*X5+2*X4*X9-X4*X8+4*X4*X7+4*X4*X6
+ & +4*X4*X5+5*X10*X5+X9**2-X9*X8+2*X9*X7+5*X9*X6+X9*X5-7*X8*
+ & X7+2*X8*X5+2*X7*X5+10*X6*X5)+2*PH**2*(-X1*X10+X3*X7-2*X4*
+ & X7+X4*X6)+4*(-X1*X9**2+X1*X9*X8-2*X1*X9*X5-X1*X8*X5+2*X2*
+ & X10*X5+X2*X9*X7+X2*X9*X6-2*X2*X8*X7+3*X2*X6*X5+X3*X9*X5+
+ & X3*X5**2+X4*X9*X5-2*X4*X8*X5+2*X4*X5**2)
+ FM(2,2)=16*PQ**6+16*PQ**4*(-X1+X3-X4-X10+X7-X6)+16*PQ**2*(
+ & X3*X10+X3*X7+X3*X6+X4*X7+X10*X7)-16*X3*X10*X7
+ FM(2,3)=16*PQ**6+8*PQ**4*(-2*X1+X2+2*X3-4*X4-4*X10-X9+X8-2
+ & *X7-2*X6+X5)+8*PQ**2*(-2*X1*X5+4*X3*X10-X3*X9-X3*X8-2*X3*
+ & X7+2*X3*X6+X3*X5-2*X4*X5-2*X10*X5-2*X6*X5)+16*X3*X5*(X10+
+ & X6)
+ FM(2,4)=8*PQ**4*(-2*X1-2*X3+X10-X8)+4*PQ**2*(4*X1**2-2*X1*
+ & X2+8*X1*X4+6*X1*X10+4*X1*X9-2*X1*X8+4*X1*X7+4*X1*X6+2*X1*
+ & X5+X2*X10+4*X3*X4+3*X3*X9-2*X3*X7+2*X3*X5-X4*X8+2*X4*X6-4
+ & *X10*X6+3*X10*X5+3*X9*X6-3*X8*X7-4*X6**2+4*X6*X5)+8*(-X1
+ & **2*X9+X1**2*X8+X1*X2*X7-X1*X2*X6-X1*X3*X9-X1*X3*X5+X1*X4
+ & *X8+X1*X4*X5+X1*X10*X8-X1*X9*X6+X1*X8*X7+X1*X8*X6+X2*X3*
+ & X7-X2*X4*X6-X2*X10*X6-X2*X6**2-X3*X10*X5-X3*X7*X5-X3*X6*
+ & X5+X4*X6*X5)
+ FM(2,5)=16*PQ**4*X10+8*PQ**2*(2*X1**2+2*X1*X3+2*X1*X4+2*X1
+ & *X10+2*X1*X7+2*X1*X6+X3*X7+X4*X6)+8*(-2*X1**3-2*X1**2*X3-
+ & 2*X1**2*X4-2*X1**2*X10-2*X1**2*X7-2*X1**2*X6-2*X1*X3*X4-
+ & X1*X3*X10-2*X1*X3*X6-X1*X4*X10-2*X1*X4*X7-X1*X10**2-X1*
+ & X10*X7-X1*X10*X6-2*X1*X7*X6+X3**2*X7-X3*X4*X7-X3*X4*X6+X3
+ & *X10*X7+X3*X7**2-X3*X7*X6+X4**2*X6+X4*X10*X6-X4*X7*X6+X4*
+ & X6**2)
+ FM(2,6)=8*PQ**4*(-2*X1+X10-X9-2*X7)+4*PQ**2*(4*X1**2+2*X1*
+ & X2+4*X1*X3+4*X1*X4+6*X1*X10-2*X1*X9+4*X1*X8+8*X1*X6-2*X1*
+ & X5+4*X2*X4+3*X2*X10+2*X2*X7-3*X3*X9-2*X3*X7-4*X4**2-4*X4*
+ & X10+3*X4*X8+2*X4*X6+X10*X5-X9*X6+3*X8*X7+4*X7*X6)+8*(X1**
+ & 2*X9-X1**2*X8-X1*X2*X7+X1*X2*X6+X1*X3*X9+X1*X3*X5+X1*X4*
+ & X9-X1*X4*X8-X1*X4*X5+X1*X10*X9+X1*X9*X6-X1*X8*X7-X2*X3*X7
+ & -X2*X4*X7+X2*X4*X6-X2*X10*X7+X3*X7*X5-X4**2*X5-X4*X10*X5-
+ & X4*X6*X5)
+ FM(2,7)=8*PQ**4*(X3+2*X4+3*X10+X7+2*X6)+4*PQ**2*(-4*X1*X3-
+ & 2*X1*X4-2*X1*X10+X1*X9-X1*X8-4*X1*X7-2*X1*X6+X2*X3+2*X2*
+ & X4+3*X2*X10+X2*X7+2*X2*X6-6*X3*X4-6*X3*X10-2*X3*X9-2*X3*
+ & X7-4*X3*X6-X3*X5-6*X4**2-6*X4*X10-3*X4*X9-X4*X8-4*X4*X7-2
+ & *X4*X6-2*X4*X5-3*X10*X9-3*X10*X8-6*X10*X7-6*X10*X6+X10*X5
+ & +X9*X7-2*X8*X7-2*X8*X6-6*X7*X6+X7*X5-6*X6**2+2*X6*X5)+4*(
+ & -X1**2*X9+X1**2*X8-2*X1*X2*X10-3*X1*X2*X7-3*X1*X2*X6+X1*
+ & X3*X9-X1*X3*X5+X1*X4*X9+X1*X4*X8+X1*X4*X5+X1*X10*X9+X1*
+ & X10*X8-X1*X9*X6+X1*X8*X6+X2*X3*X7-3*X2*X4*X7-X2*X4*X6-3*
+ & X2*X10*X7-3*X2*X10*X6-3*X2*X7*X6-3*X2*X6**2-2*X3*X4*X5-X3
+ & *X10*X5-X3*X6*X5-X4**2*X5-X4*X10*X5+X4*X6*X5)
+ FM(2,8)=8*PQ**4*(X3+2*X4+3*X10+X7+2*X6)+4*PQ**2*(-4*X1*X3-
+ & 2*X1*X4-2*X1*X10-X1*X9+X1*X8-4*X1*X7-2*X1*X6+X2*X3+2*X2*
+ & X4+X2*X10-X2*X7-2*X2*X6-6*X3*X4-6*X3*X10-2*X3*X9+X3*X8-2*
+ & X3*X7-4*X3*X6+X3*X5-6*X4**2-6*X4*X10-2*X4*X9-4*X4*X7-2*X4
+ & *X6+2*X4*X5-3*X10*X9-3*X10*X8-6*X10*X7-6*X10*X6+3*X10*X5-
+ & X9*X6-2*X8*X7-3*X8*X6-6*X7*X6+X7*X5-6*X6**2+2*X6*X5)+4*(
+ & X1**2*X9-X1**2*X8-X1*X2*X7+X1*X2*X6-3*X1*X3*X5+X1*X4*X9-
+ & X1*X4*X8-3*X1*X4*X5+X1*X10*X9+X1*X10*X8-2*X1*X10*X5+X1*X9
+ & *X6+X1*X8*X7+X1*X8*X6-X2*X4*X7+X2*X4*X6-X2*X10*X7-X2*X10*
+ & X6-2*X2*X7*X6-X2*X6**2-3*X3*X4*X5-3*X3*X10*X5+X3*X7*X5-3*
+ & X3*X6*X5-3*X4**2*X5-3*X4*X10*X5-X4*X6*X5)
+ FM(3,3)=64*PQ**6+16*PQ**4*PH**2+32*PQ**4*(X1+X2+2*X3+X8+X6
+ & +2*X5)+8*PQ**2*PH**2*(-X1+2*X3-X6)+16*PQ**2*(X2*X5-2*X3*
+ & X8-2*X3*X6+4*X3*X5+X8*X5)+8*PH**2*X3*X6-16*X3*X8*X5
+ FM(3,4)=16*PQ**4*(-4*X1-X3+X8-X6)+4*PQ**2*PH**2*(-2*X1-X3-
+ & X6)+16*PQ**2*(-2*X1**2-3*X1*X2-2*X1*X3-3*X1*X8-2*X1*X6-3*
+ & X1*X5-2*X2*X3-2*X6*X5)-8*PH**2*X3*X6+8*(-X1*X2*X8-2*X1*X2
+ & *X5-X1*X8**2-X1*X8*X5+X2**2*X6-X2*X3*X5+X2*X8*X6-X2*X6*X5
+ & +X3*X8*X5+X3*X5**2)
+ FM(3,5)=8*PQ**4*(-2*X1+X10-X8-2*X6)+4*PQ**2*(4*X1**2+2*X1*
+ & X2+4*X1*X3+4*X1*X4+6*X1*X10+4*X1*X9-2*X1*X8+8*X1*X7-2*X1*
+ & X5+4*X2*X3+3*X2*X10+2*X2*X6-4*X3**2-4*X3*X10+3*X3*X9+2*X3
+ & *X7-3*X4*X8-2*X4*X6+X10*X5+3*X9*X6-X8*X7+4*X7*X6)+8*(-X1
+ & **2*X9+X1**2*X8+X1*X2*X7-X1*X2*X6-X1*X3*X9+X1*X3*X8-X1*X3
+ & *X5+X1*X4*X8+X1*X4*X5+X1*X10*X8-X1*X9*X6+X1*X8*X7+X2*X3*
+ & X7-X2*X3*X6-X2*X4*X6-X2*X10*X6-X3**2*X5-X3*X10*X5-X3*X7*
+ & X5+X4*X6*X5)
+ FM(3,6)=16*PQ**6+4*PQ**4*PH**2+16*PQ**4*(-X1-X2+2*X3+2*X4+
+ & X10-X9-X8-X7-X6+X5)+4*PQ**2*PH**2*(X1+2*X3+2*X4+X10+X7+X6
+ & )+8*PQ**2*(4*X1*X3+4*X1*X4+4*X1*X10+4*X2*X3+4*X2*X4+4*X2*
+ & X10-X2*X5+4*X3*X5+4*X4*X5+2*X10*X5-X9*X5-X8*X5)-(8*PH**2*
+ & X1)*(X3+X4+X10)+16*X2*X5*(X3+X4+X10)
+ FM(3,7)=8*PQ**4*(3*X3+6*X4+3*X10+X9+2*X8+2*X7+X6)+2*PQ**2*
+ & PH**2*(X3+2*X4+2*X10-2*X7-X6)+4*PQ**2*(4*X1*X3+8*X1*X4+4*
+ & X1*X10+2*X1*X9-2*X1*X8+2*X2*X3+10*X2*X4+5*X2*X10+2*X2*X9+
+ & X2*X8+2*X2*X7+4*X2*X6-7*X3*X9+2*X3*X8-8*X3*X7+4*X3*X6+4*
+ & X3*X5+5*X4*X8+4*X4*X6+8*X4*X5+5*X10*X5-X9*X8-X9*X6+X9*X5+
+ & X8**2-X8*X7+2*X8*X6+2*X8*X5)+2*PH**2*(-X1*X10+X3*X7-2*X3*
+ & X6+X4*X6)+4*(-X1*X2*X9-2*X1*X2*X8+X1*X9*X8-X1*X8**2+X2**2
+ & *X7+2*X2**2*X6+3*X2*X4*X5+2*X2*X10*X5-2*X2*X9*X6+X2*X8*X7
+ & +X2*X8*X6-2*X3*X9*X5+X3*X8*X5+X4*X8*X5)
+ FM(3,8)=8*PQ**4*(3*X3+6*X4+3*X10+2*X9+X8+2*X7+X6)+2*PQ**2*
+ & PH**2*(3*X3+6*X4+3*X10-2*X7-X6)+4*PQ**2*(4*X1*X3+8*X1*X4+
+ & 4*X1*X10+4*X2*X3+8*X2*X4+4*X2*X10-8*X3*X9+4*X3*X8-8*X3*X7
+ & +4*X3*X6+6*X3*X5+4*X4*X8+4*X4*X6+12*X4*X5+6*X10*X5+2*X9*
+ & X5+X8*X5)+4*PH**2*(-X1*X3-2*X1*X4-X1*X10+2*X3*X7-X3*X6-X4
+ & *X6)+8*X5*(X2*X3+2*X2*X4+X2*X10-2*X3*X9+X3*X8+X4*X8)
+ FM(4,4)=64*PQ**6+16*PQ**4*PH**2+32*PQ**4*(X1+2*X2+X3+X8+2*
+ & X6+X5)+8*PQ**2*PH**2*(-X1-X3+2*X6)+16*PQ**2*(X2*X8+4*X2*
+ & X6+X2*X5-2*X3*X6-2*X8*X6)+8*PH**2*X3*X6-16*X2*X8*X6
+ FM(4,5)=16*PQ**6+8*PQ**4*(-2*X1+X2-2*X3-2*X4-4*X10-X9+X8-4
+ & *X7+2*X6+X5)+8*PQ**2*(-2*X1*X2-2*X2*X3-2*X2*X10-2*X2*X7+
+ & X2*X6+2*X3*X6-2*X4*X6+4*X10*X6-X9*X6-X8*X6)+16*X2*X6*(X3+
+ & X10)
+ FM(4,6)=16*PQ**6-4*PQ**4*PH**2+8*PQ**4*(-2*X1+2*X2-4*X3-2*
+ & X4-8*X10+X9+X8-4*X7-2*X6+2*X5)-(4*PQ**2*PH**2)*(X1+X3+X10
+ & +X7)+8*PQ**2*(-2*X1*X2-2*X1*X10+X1*X9+X1*X8-2*X1*X5+X2**2
+ & -4*X2*X3-5*X2*X10+X2*X9-3*X2*X7-X2*X6+X2*X5+X3*X9+2*X3*X7
+ & -3*X3*X5+X4*X8+2*X4*X6-X4*X5-5*X10*X5+X9*X8+X9*X6+X8*X7+
+ & X8*X5-4*X7*X5+X5**2)-(16*X2*X5)*(X1+X3+X10+X7)
+ FM(4,7)=8*PQ**4*(-X3-2*X4-3*X10-2*X9-X8-6*X7-3*X6)+2*PQ**2
+ & *PH**2*(X3+2*X4-3*X10-6*X7-3*X6)+4*PQ**2*(-4*X1*X10-8*X1*
+ & X7-4*X1*X6-6*X2*X10-2*X2*X9-X2*X8-12*X2*X7-6*X2*X6-4*X3*
+ & X7-4*X3*X6+8*X4*X6-4*X10*X5+8*X9*X6-4*X8*X7-4*X8*X6-8*X7*
+ & X5-4*X6*X5)+4*PH**2*(X1*X10+2*X1*X7+X1*X6+X3*X7+X3*X6-2*
+ & X4*X6)+8*X2*(-X10*X5+2*X9*X6-X8*X7-X8*X6-2*X7*X5-X6*X5)
+ FM(4,8)=8*PQ**4*(-X3-2*X4-3*X10-X9-2*X8-6*X7-3*X6)+2*PQ**2
+ & *PH**2*(X3+2*X4-2*X10-2*X7-X6)+4*PQ**2*(-4*X1*X10-2*X1*X9
+ & +2*X1*X8-8*X1*X7-4*X1*X6-5*X2*X10-X2*X9-2*X2*X8-8*X2*X7-4
+ & *X2*X6+X3*X9-2*X3*X8-4*X3*X7-4*X3*X6-4*X3*X5+X4*X8+8*X4*
+ & X6-2*X4*X5-5*X10*X5+X9*X8+7*X9*X6-2*X9*X5-X8**2-5*X8*X7-2
+ & *X8*X6-X8*X5-10*X7*X5-2*X6*X5)+2*PH**2*(X1*X10-X3*X7+2*X3
+ & *X6-X4*X6)+4*(-X1*X9*X8+X1*X9*X5+X1*X8**2+2*X1*X8*X5-2*X2
+ & *X10*X5+2*X2*X9*X6-X2*X8*X7-X2*X8*X6-3*X2*X7*X5+2*X3*X9*
+ & X5-X3*X8*X5-2*X3*X5**2-X4*X8*X5-X4*X5**2)
+ FM(5,5)=16*PQ**6+16*PQ**4*(-X1-X3+X4-X10-X7+X6)+16*PQ**2*(
+ & X3*X6+X4*X10+X4*X7+X4*X6+X10*X6)-16*X4*X10*X6
+ FM(5,6)=16*PQ**6+8*PQ**4*(-2*X1+X2-4*X3+2*X4-4*X10+X9-X8-2
+ & *X7-2*X6+X5)+8*PQ**2*(-2*X1*X5-2*X3*X5+4*X4*X10-X4*X9-X4*
+ & X8+2*X4*X7-2*X4*X6+X4*X5-2*X10*X5-2*X7*X5)+16*X4*X5*(X10+
+ & X7)
+ FM(5,7)=8*PQ**4*(-2*X3-X4-3*X10-2*X7-X6)+4*PQ**2*(2*X1*X3+
+ & 4*X1*X4+2*X1*X10+X1*X9-X1*X8+2*X1*X7+4*X1*X6-2*X2*X3-X2*
+ & X4-3*X2*X10-2*X2*X7-X2*X6+6*X3**2+6*X3*X4+6*X3*X10+X3*X9+
+ & 3*X3*X8+2*X3*X7+4*X3*X6+2*X3*X5+6*X4*X10+2*X4*X8+4*X4*X7+
+ & 2*X4*X6+X4*X5+3*X10*X9+3*X10*X8+6*X10*X7+6*X10*X6-X10*X5+
+ & 2*X9*X7+2*X9*X6-X8*X6+6*X7**2+6*X7*X6-2*X7*X5-X6*X5)+4*(-
+ & X1**2*X9+X1**2*X8+2*X1*X2*X10+3*X1*X2*X7+3*X1*X2*X6-X1*X3
+ & *X9-X1*X3*X8-X1*X3*X5-X1*X4*X8+X1*X4*X5-X1*X10*X9-X1*X10*
+ & X8-X1*X9*X7+X1*X8*X7+X2*X3*X7+3*X2*X3*X6-X2*X4*X6+3*X2*
+ & X10*X7+3*X2*X10*X6+3*X2*X7**2+3*X2*X7*X6+X3**2*X5+2*X3*X4
+ & *X5+X3*X10*X5-X3*X7*X5+X4*X10*X5+X4*X7*X5)
+ FM(5,8)=8*PQ**4*(-2*X3-X4-3*X10-2*X7-X6)+4*PQ**2*(2*X1*X3+
+ & 4*X1*X4+2*X1*X10-X1*X9+X1*X8+2*X1*X7+4*X1*X6-2*X2*X3-X2*
+ & X4-X2*X10+2*X2*X7+X2*X6+6*X3**2+6*X3*X4+6*X3*X10+2*X3*X8+
+ & 2*X3*X7+4*X3*X6-2*X3*X5+6*X4*X10-X4*X9+2*X4*X8+4*X4*X7+2*
+ & X4*X6-X4*X5+3*X10*X9+3*X10*X8+6*X10*X7+6*X10*X6-3*X10*X5+
+ & 3*X9*X7+2*X9*X6+X8*X7+6*X7**2+6*X7*X6-2*X7*X5-X6*X5)+4*(
+ & X1**2*X9-X1**2*X8-X1*X2*X7+X1*X2*X6+X1*X3*X9-X1*X3*X8+3*
+ & X1*X3*X5+3*X1*X4*X5-X1*X10*X9-X1*X10*X8+2*X1*X10*X5-X1*X9
+ & *X7-X1*X9*X6-X1*X8*X7-X2*X3*X7+X2*X3*X6+X2*X10*X7+X2*X10*
+ & X6+X2*X7**2+2*X2*X7*X6+3*X3**2*X5+3*X3*X4*X5+3*X3*X10*X5+
+ & X3*X7*X5+3*X4*X10*X5+3*X4*X7*X5-X4*X6*X5)
+ FM(6,6)=64*PQ**6+16*PQ**4*PH**2+32*PQ**4*(X1+X2+2*X4+X9+X7
+ & +2*X5)+8*PQ**2*PH**2*(-X1+2*X4-X7)+16*PQ**2*(X2*X5-2*X4*
+ & X9-2*X4*X7+4*X4*X5+X9*X5)+8*PH**2*X4*X7-16*X4*X9*X5
+ FM(6,7)=8*PQ**4*(-6*X3-3*X4-3*X10-2*X9-X8-X7-2*X6)+2*PQ**2
+ & *PH**2*(-2*X3-X4-2*X10+X7+2*X6)+4*PQ**2*(-8*X1*X3-4*X1*X4
+ & -4*X1*X10+2*X1*X9-2*X1*X8-10*X2*X3-2*X2*X4-5*X2*X10-X2*X9
+ & -2*X2*X8-4*X2*X7-2*X2*X6-5*X3*X9-4*X3*X7-8*X3*X5-2*X4*X9+
+ & 7*X4*X8-4*X4*X7+8*X4*X6-4*X4*X5-5*X10*X5-X9**2+X9*X8-2*X9
+ & *X7+X9*X6-2*X9*X5+X8*X7-X8*X5)+2*PH**2*(X1*X10-X3*X7+2*X4
+ & *X7-X4*X6)+4*(2*X1*X2*X9+X1*X2*X8+X1*X9**2-X1*X9*X8-2*X2
+ & **2*X7-X2**2*X6-3*X2*X3*X5-2*X2*X10*X5-X2*X9*X7-X2*X9*X6+
+ & 2*X2*X8*X7-X3*X9*X5-X4*X9*X5+2*X4*X8*X5)
+ FM(6,8)=8*PQ**4*(-6*X3-3*X4-3*X10-X9-2*X8-X7-2*X6)+2*PQ**2
+ & *PH**2*(-6*X3-3*X4-3*X10+X7+2*X6)+4*PQ**2*(-8*X1*X3-4*X1*
+ & X4-4*X1*X10-8*X2*X3-4*X2*X4-4*X2*X10-4*X3*X9-4*X3*X7-12*
+ & X3*X5-4*X4*X9+8*X4*X8-4*X4*X7+8*X4*X6-6*X4*X5-6*X10*X5-X9
+ & *X5-2*X8*X5)+4*PH**2*(2*X1*X3+X1*X4+X1*X10+X3*X7+X4*X7-2*
+ & X4*X6)+8*X5*(-2*X2*X3-X2*X4-X2*X10-X3*X9-X4*X9+2*X4*X8)
+ FM(7,7)=72*PQ**4*X10+18*PQ**2*PH**2*X10+8*PQ**2*(X1*X10+9*
+ & X2*X10+7*X3*X7+2*X3*X6+2*X4*X7+7*X4*X6+X10*X5+2*X9*X7+7*
+ & X9*X6+7*X8*X7+2*X8*X6)+2*PH**2*(-X1*X10-7*X3*X7-2*X3*X6-2
+ & *X4*X7-7*X4*X6)+4*X2*(X10*X5+2*X9*X7+7*X9*X6+7*X8*X7+2*X8
+ & *X6)
+ FM(7,8)=72*PQ**4*X10+2*PQ**2*PH**2*X10+4*PQ**2*(2*X1*X10+
+ & 10*X2*X10+7*X3*X9+2*X3*X8+14*X3*X7+4*X3*X6+2*X4*X9+7*X4*
+ & X8+4*X4*X7+14*X4*X6+10*X10*X5+X9**2+7*X9*X8+2*X9*X7+7*X9*
+ & X6+X8**2+7*X8*X7+2*X8*X6)+2*PH**2*(7*X1*X10-7*X3*X7-2*X3*
+ & X6-2*X4*X7-7*X4*X6)+2*(-2*X1*X9**2-14*X1*X9*X8-2*X1*X8**2
+ & +2*X2*X10*X5+2*X2*X9*X7+7*X2*X9*X6+7*X2*X8*X7+2*X2*X8*X6+
+ & 7*X3*X9*X5+2*X3*X8*X5+2*X4*X9*X5+7*X4*X8*X5)
+ FM(8,8)=72*PQ**4*X10+18*PQ**2*PH**2*X10+8*PQ**2*(X1*X10+X2
+ & *X10+7*X3*X9+2*X3*X8+7*X3*X7+2*X3*X6+2*X4*X9+7*X4*X8+2*X4
+ & *X7+7*X4*X6+9*X10*X5)+2*PH**2*(-X1*X10-7*X3*X7-2*X3*X6-2*
+ & X4*X7-7*X4*X6)+4*X5*(X2*X10+7*X3*X9+2*X3*X8+2*X4*X9+7*X4*
+ & X8)
+ FM(9,9)=-4*PQ**4*X10-PQ**2*PH**2*X10+4*PQ**2*(-X1*X10-X2*X10+
+ & X3*X7+X4*X6-X10*X5+X9*X6+X8*X7)+PH**2*(X1*X10-X3*X7-X4*X6
+ & )+2*X2*(-X10*X5+X9*X6+X8*X7)
+ FM(9,10)=-4*PQ**4*X10-PQ**2*PH**2*X10+2*PQ**2*(-2*X1*X10-2*X2*
+ & X10+2*X3*X9+2*X3*X7+2*X4*X6-2*X10*X5+X9*X8+2*X8*X7)+PH**2
+ & *(X1*X10-X3*X7-X4*X6)+2*(-X1*X9*X8-X2*X10*X5+X2*X8*X7+X3*
+ & X9*X5)
+ FMXX=-4*PQ**4*X10-PQ**2*PH**2*X10+2*PQ**2*(-2*X1*X10-2*X2*
+ & X10+2*X4*X8+2*X4*X6+2*X3*X7-2*X10*X5+X9*X8+2*X9*X6)+PH**2
+ & *(X1*X10-X3*X7-X4*X6)+2*(-X1*X9*X8-X2*X10*X5+X2*X9*X6+X4*
+ & X8*X5)
+ FM(9,10)=0.5D0*(FMXX+FM(9,10))
+ FM(10,10)=-4*PQ**4*X10-PQ**2*PH**2*X10+4*PQ**2*(-X1*X10-X2*X10+
+ & X3*X7+X4*X6-X10*X5+X9*X3+X8*X4)+PH**2*(X1*X10-X3*X7-X4*X6
+ & )+2*X5*(-X10*X2+X9*X3+X8*X4)
+
+C...Repackage matrix elements.
+ DO 200 I=1,8
+ DO 190 J=I,8
+ RM(I,J)=FM(I,J)
+ 190 CONTINUE
+ 200 CONTINUE
+ RM(7,7)=FM(7,7)-2D0*FM(9,9)
+ RM(7,8)=FM(7,8)-2D0*FM(9,10)
+ RM(8,8)=FM(8,8)-2D0*FM(10,10)
+
+C...Produce final result: matrix elements * colours * propagators.
+ DO 220 I=1,8
+ DO 210 J=I,8
+ FAC=8D0
+ IF(I.EQ.J)FAC=4D0
+ WTQQBH=WTQQBH+RM(I,J)*FAC*CLR(I,J)/(DX(I)*DX(J))
+ 210 CONTINUE
+ 220 CONTINUE
+ WTQQBH=-WTQQBH/256D0
+
+ ELSE
+C...Evaluate matrix elements for q + qbar -> Q + Qbar + H.
+ A11=-8D0*PQ**4*X10-2D0*PQ**2*PH**2*X10-(8D0*PQ**2)*(X2*X10+X3
+ & *X7+X4*X6+X9*X6+X8*X7)+2D0*PH**2*(X3*X7+X4*X6)-(4D0*X2)*(X9
+ & *X6+X8*X7)
+ A12=-8D0*PQ**4*X10+4D0*PQ**2*(-X2*X10-X3*X9-2D0*X3*X7-X4*X8-
+ & 2D0*X4*X6-X10*X5-X9*X8-X9*X6-X8*X7)+2D0*PH**2*(-X1*X10+X3*X7
+ & +X4*X6)+2D0*(2D0*X1*X9*X8-X2*X9*X6-X2*X8*X7-X3*X9*X5-X4*X8*
+ & X5)
+ A22=-8D0*PQ**4*X10-2D0*PQ**2*PH**2*X10-(8D0*PQ**2)*(X3*X9+X3*
+ & X7+X4*X8+X4*X6+X10*X5)+2D0*PH**2*(X3*X7+X4*X6)-(4D0*X5)*(X3
+ & *X9+X4*X8)
+
+C...Produce final result: matrix elements * propagators.
+ A11=A11/DX(7)**2
+ A12=A12/(DX(7)*DX(8))
+ A22=A22/DX(8)**2
+ WTQQBH=-(A11+A22+2D0*A12)*8D0/9D0
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSTBH (and auxiliaries)
+C.. Evaluates the matrix elements for t + b + H production.
+
+ SUBROUTINE PYSTBH(WTTBH)
+
+C...DOUBLE PRECISION AND INTEGER DECLARATIONS
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...COMMONBLOCKS
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSGCM/ISUB,ISUBSV,MMIN1,MMAX1,MMIN2,MMAX2,MMINA,MMAXA,
+ &KFAC(2,-40:40),COMFAC,FACK,FACA,SH,TH,UH,SH2,TH2,UH2,SQM3,SQM4,
+ &SHR,SQPTH,TAUP,BE34,CTH,X(2),SQMZ,SQMW,GMMZ,GMMW,
+ &AEM,AS,XW,XW1,XWC,XWV,POLL,POLR,POLLL,POLRR
+ COMMON/PYCTBH/ ALPHA,ALPHAS,SW2,MW2,TANB,VTB,V,A
+ DOUBLE PRECISION MW2
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/,/PYINT2/,/PYINT3/,
+ &/PYINT4/,/PYSUBS/,/PYMSSM/,/PYSGCM/,/PYCTBH/
+
+C...LOCAL ARRAYS AND COMPLEX VARIABLES
+ DIMENSION QQ(4,2),PP(4,3)
+ DATA QQ/8*0D0/
+
+ WTTBH=0D0
+
+C...KINEMATIC PARAMETERS.
+ SHPR=SQRT(VINT(26))*VINT(1)
+ PH=SQRT(VINT(21))*VINT(1)
+ SPH=PH**2
+
+C...SET UP OUTGOING KINEMATICS: 1=T, 2=TBAR, 3=H.
+ DO 100 I=1,2
+ PT=SQRT(MAX(0D0,VINT(197+5*I)))
+ PP(1,I)=PT*COS(VINT(198+5*I))
+ PP(2,I)=PT*SIN(VINT(198+5*I))
+ 100 CONTINUE
+ PP(1,3)=-PP(1,1)-PP(1,2)
+ PP(2,3)=-PP(2,1)-PP(2,2)
+ PMS1=VINT(201)**2+PP(1,1)**2+PP(2,1)**2
+ PMS2=VINT(206)**2+PP(1,2)**2+PP(2,2)**2
+ PMS3=SPH+PP(1,3)**2+PP(2,3)**2
+ PMT3=SQRT(PMS3)
+ PP(3,3)=PMT3*SINH(VINT(211))
+ PP(4,3)=PMT3*COSH(VINT(211))
+ PMS12=(SHPR-PP(4,3))**2-PP(3,3)**2
+ PP(3,1)=(-PP(3,3)*(PMS12+PMS1-PMS2)+
+ &VINT(213)*(SHPR-PP(4,3))*VINT(220))/(2D0*PMS12)
+ PP(3,2)=-PP(3,1)-PP(3,3)
+ PP(4,1)=SQRT(PMS1+PP(3,1)**2)
+ PP(4,2)=SQRT(PMS2+PP(3,2)**2)
+
+C...CM SYSTEM, INGOING QUARKS/GLUONS
+ QQ(3,1) = SHPR/2.D0
+ QQ(4,1) = QQ(3,1)
+ QQ(3,2) = -QQ(3,1)
+ QQ(4,2) = QQ(4,1)
+
+C...PARAMETERS FOR AMPLITUDE METHOD
+ ALPHA = AEM
+ ALPHAS = AS
+ SW2 = PARU(102)
+ MW2 = PMAS(24,1)**2
+ TANB = PARU(141)
+ VTB = VCKM(3,3)
+ RMB=PYMRUN(5,VINT(52))
+
+ ISUB=MINT(1)
+
+ IF (ISUB.EQ.401) THEN
+ CALL PYTBHG(QQ(1,1),QQ(1,2),PP(1,1),PP(1,2),PP(1,3),
+ & VINT(201),VINT(206),RMB,VINT(43),WTTBH)
+ ELSE IF (ISUB.EQ.402) THEN
+ CALL PYTBHQ(QQ(1,1),QQ(1,2),PP(1,1),PP(1,2),PP(1,3),
+ & VINT(201),VINT(206),RMB,VINT(43),WTTBH)
+ END IF
+
+ RETURN
+ END
+C------------------------------------------------------------------
+ SUBROUTINE PYTBHB(MT,MB,MHP,BR,GAMT)
+C WIDTH AND BRANCHING RATIO FOR (ON-SHELL) T-> B W+, T->B H+
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ DOUBLE PRECISION MW2,MT,MB,MHP,MW,KFUN
+ COMMON/PYCTBH/ ALPHA,ALPHAS,SW2,MW2,TANB,VTB,V,A
+ SAVE /PYCTBH/
+
+C TOP WIDTH CALCULATION
+C VTB = 0.99
+ MW=DSQRT(MW2)
+ XB=(MB/MT)**2
+ XW=(MW/MT)**2
+ XH =(MHP/MT)**2
+ GAMTBH = 0D0
+ IF (MT .LT. (MHP+MB)) THEN
+C T ->B W ONLY
+ BETW = DSQRT(1.D0-2*(XB+XW)+(XW-XB)**2)
+ GAMTBW = VTB**2*ALPHA/(16*SW2)*MT/XW*BETW*
+ & (2*(1.D0-XB-XW)-(1.D0+XB-XW)*(1.D0-XB -2*XW) )
+ GAMT = GAMTBW
+ ELSE
+C T ->BW +T ->B H^+
+ BETW = DSQRT(1.D0-2*(XB+XW)+(XW-XB)**2)
+ GAMTBW = VTB**2*ALPHA/(16*SW2)*MT/XW*BETW*
+ & (2*(1.D0-XB-XW)-(1.D0+XB-XW)*(1.D0-XB -2*XW) )
+C
+ KFUN = DSQRT( (1.D0-(MHP/MT)**2-(MB/MT)**2)**2
+ & -4.D0*(MHP*MB/MT**2)**2 )
+ GAMTBH= ALPHA/SW2/8.D0*VTB**2*KFUN/MT *
+ & (V**2*((MT+MB)**2-MHP**2)+A**2*((MT-MB)**2-MHP**2))
+ GAMT = GAMTBW+GAMTBH
+ ENDIF
+C THUS BR IS
+ BR=GAMTBH/GAMT
+ RETURN
+ END
+
+C AMPLITUDE SQUARED (MATRIX ELEMENTS) FOR THE PROCESSES:
+C GG->TBH^+, QQBAR->TBH^+
+C AS A FUNCTION OF 4-MOMENTA FOR SUITABLE INTERFACE
+C (FOR INSTANCE WITH PYTHIA)
+C------------------------------------------------------------
+C BASED ON F. BORZUMATI, J.-L. KNEUR, N. POLONSKY HEP-PH/9905443,
+C PHYS REV. D 60 (1999) 115011
+C (THESE FILES PREPARED BY J.-L. KNEUR)
+C------------------------------------------------------------
+C 1) GG->TBH^+
+ SUBROUTINE PYTBHG(Q1,Q2,P1,P2,P3,MT,MB,RMB,MHP,AMP2)
+C
+C CONVENTIONS AND INPUT/OUTPUT DEFINITIONS:
+C
+C INPUT: Q1,Q2 ARE ENTERING 4-MOMENTA OF INITIAL GLUONS OR QUARKS;
+C P1, P2 ARE THE TOP AND BOTTOM OUTGOING 4-MOMENTA;
+C P3 IS OUTGOING CHARGED HIGGS 4-MOMENTA.
+C (NB FOR ALL 4-MOMENTA P(4) IS TIME-COMPONENT)
+C "PHYSICAL PARAMETERS" INPUT:
+C MT,MB TOP AND BOTTOM MASSES;
+C MHP CHARGED HIGGS MASS
+C FURTHER PARAMETERS INPUT IS NEEDED FROM COMMON/PARAM/ (SEE BELOW)
+C
+C OUTPUT: AMP2 IS MATRIX ELEMENT (AMPLITUDE**2) FOR GG->TB H^+
+C (NB AMP2 IS TRULY AMPLITUDE SQUARRED, I.E. WITHOUT ANY
+C PHASE SPACE FACTORS INCLUDED. IT INCLUDES COLOUR AND COUPLING
+C FACTORS, AS EXPLICIT BELOW. ACCORDINGLY, FOR EXAMPLE THE TOTAL
+C CROSS-SECTION SHOULD BE (SYMBOLICALLY):
+C SIGMA = INTEGRATE [PARTON DENSITY FUNCTIONS * 3-PARTICLE FINAL
+C STATE PHASE-SPACE (STANDARDLY NORMALIZED) * AMP2 ]
+C
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ DOUBLE PRECISION MW2,MT,MB,MHP,MW
+ DIMENSION Q1(4),Q2(4),P1(4),P2(4),P3(4)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+
+ COMMON/PYCTBH/ ALPHA,ALPHAS,SW2,MW2,TANB,VTB,V,A
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYCTBH/
+C !THE RELEVANT INPUT PARAMETERS ABOVE ARE NEEDED FOR CALCULATION
+C BUT ARE NOT DEFINED HERE SO THAT ONE MAY CHOOSE/VARY THEIR VALUES:
+C ACCORDINGLY, WHEN CALLING THESE SUBROUTINES, PLEASE SUPPLY VIA
+C THIS COMMON/PARAM/ YOUR PREFERRED ALPHA, ALPHAS,..AND TANB
+C (TAN BETA) VALUES
+C
+C THE NORMALIZED V,A COUPLINGS ARE DEFINED BELOW AND USED BOTH
+C IN THIS ROUTINE AND IN THE TOP WIDTH CALCULATION PYTBHB(..).
+
+ PI = 4*DATAN(1.D0)
+ MW = DSQRT(MW2)
+C
+C COLLECTING THE RELEVANT OVERALL FACTORS:
+C 8X8 INITIAL GLUON COLOR AVERAGE, 2X2 GLUON SPIN AVERAGE
+ PS=1.D0/(8.D0*8.D0 *2.D0*2.D0)
+C COUPLING CONSTANT (OVERALL NORMALIZATION)
+ FACT=(4.D0*PI*ALPHA)*(4.D0*PI*ALPHAS)**2/SW2/2.D0
+C NB ALPHA IS E^2/4/PI, BUT BETTER DEFINED IN TERMS OF G_FERMI:
+C ALPHA= DSQRT(2.D0)*GF*SW2*MW**2/PI
+C ALPHAS IS ALPHA_STRONG;
+C SW2 IS SIN(THETA_W)**2.
+C
+C VTB=.998D0
+C VTB IS TOP-BOTTOM CKM MATRIX ELEMENT (APPROXIMATE VALUE HERE)
+C
+ V = ( MT/MW/TANB +RMB/MW*TANB)/2.D0
+ A = (-MT/MW/TANB +RMB/MW*TANB)/2.D0
+C V AND A ARE (NORMALIZED) VECTOR AND AXIAL TBH^+ COUPLINGS
+C
+C REDEFINING P2 INGOING FROM OVERALL MOMENTUM CONSERVATION
+C (BECAUSE P2 INGOING WAS USED IN OUR GRAPH CALCULATION CONVENTIONS)
+ DO 100 KK=1,4
+ P2(KK)=P3(KK)-Q1(KK)-Q2(KK)+P1(KK)
+ 100 CONTINUE
+C DEFINING VARIOUS RELEVANT 4-SCALAR PRODUCTS:
+ S = 2*PYTBHS(Q1,Q2)
+ P1Q1=PYTBHS(Q1,P1)
+ P1Q2=PYTBHS(P1,Q2)
+ P2Q1=PYTBHS(P2,Q1)
+ P2Q2=PYTBHS(P2,Q2)
+ P1P2=PYTBHS(P1,P2)
+C
+C TOP WIDTH CALCULATION
+ CALL PYTBHB(MT,MB,MHP,BR,GAMT)
+C GAMT IS THE TOP WIDTH: T->BH^+ AND/OR T->B W^+
+C THEN DEFINE TOP (RESONANT) PROPAGATOR:
+ A1INV= S -2*P1Q1 -2*P1Q2
+ A1 =A1INV/(A1INV**2+ (GAMT*MT)**2)
+C (I.E. INTRODUCE THE TOP WIDTH IN A1 TO REGULARISE THE POLE)
+C NB: A12 = A1*A1 BUT CORRECT EXPRESSION BELOW BECAUSE OF
+C THE TOP WIDTH
+ A12 = 1.D0/(A1INV**2+ (GAMT*MT)**2)
+ A2 =1.D0/(S +2*P2Q1 +2*P2Q2)
+C NOTE A2 IS B PROPAGATOR, DOES NOT NEED A WIDTH
+C NOW COMES THE AMP**2:
+C NB COLOR FACTOR (COMING FROM GRAPHS) ALREADY INCLUDED IN
+C THE EXPRESSIONS BELOW
+ V18=0.D0
+ A18=0.D0
+ V18= 640*A1/3+640*A2/3+32*A1*A2*MB**2-368*A12*MB*MT-
+ &512*A1*A2*MB*MT/3-
+ &368*A2**2*MB*MT+32*A1*A2*MT**2+496*A12*P1P2/3+
+ &320*A1*A2*P1P2+496*A2**2*P1P2/3+128*A1*MB*MT**3/(3*P1Q1**2)+
+ &128*A1*MT**4/(3*P1Q1**2)-256*A12*MB*MT**5/(3*P1Q1**2)+
+ &256*A1*MT**2*P1P2/(3*P1Q1**2)-256*A12*MT**4*P1P2/(3*P1Q1**2)+
+ &8/(3*P1Q1)-32*A1*MB*MT/P1Q1-56*A2*MB*MT/(3*P1Q1)+
+ &88*A1*MT**2/(3*P1Q1)+72*A2*MT**2/P1Q1+
+ &704*A12*MB*MT**3/(3*P1Q1)-224*A1*A2*MB*MT**3/(3*P1Q1)+
+ &104*A1*P1P2/(3*P1Q1)+48*A2*P1P2/P1Q1+
+ &128*A1*A2*MB*MT*P1P2/(3*P1Q1)+512*A12*MT**2*P1P2/(3*P1Q1)-
+ &448*A1*A2*MT**2*P1P2/(3*P1Q1)-32*A1*A2*P1P2**2/P1Q1-
+ &656*A1*A2*P1Q1/3-224*A2**2*P1Q1+128*A1*MB*MT**3/(3*P1Q2**2)+
+ &128*A1*MT**4/(3*P1Q2**2)-256*A12*MB*MT**5/(3*P1Q2**2)+
+ &256*A1*MT**2*P1P2/(3*P1Q2**2)-256*A12*MT**4*P1P2/(3*P1Q2**2)+
+ &256*A1*MT**2*P1Q1/(3*P1Q2**2)+256*A12*MB*MT**3*P1Q1/(3*P1Q2**2)+
+ &8/(3*P1Q2)-32*A1*MB*MT/P1Q2-56*A2*MB*MT/(3*P1Q2)
+ V18=V18+88*A1*MT**2/(3*P1Q2)+72*A2*MT**2/P1Q2+
+ &704*A12*MB*MT**3/(3*P1Q2)-224*A1*A2*MB*MT**3/(3*P1Q2)+
+ &104*A1*P1P2/(3*P1Q2)+48*A2*P1P2/P1Q2+
+ &128*A1*A2*MB*MT*P1P2/(3*P1Q2)+512*A12*MT**2*P1P2/(3*P1Q2)-
+ &448*A1*A2*MT**2*P1P2/(3*P1Q2)-32*A1*A2*P1P2**2/P1Q2-
+ &32*A1*MB*MT**3/(3*P1Q1*P1Q2)-32*A1*MT**4/(3*P1Q1*P1Q2)+
+ &64*A12*MB*MT**5/(3*P1Q1*P1Q2)+16*P1P2/(3*P1Q1*P1Q2)-
+ &64*A1*MT**2*P1P2/(3*P1Q1*P1Q2)+64*A12*MT**4*P1P2/(3*P1Q1*P1Q2)+
+ &112*A1*P1Q1/P1Q2+272*A2*P1Q1/(3*P1Q2)-
+ &272*A1*A2*MB**2*P1Q1/(3*P1Q2)+208*A12*MB*MT*P1Q1/(3*P1Q2)-
+ &400*A1*A2*MB*MT*P1Q1/(3*P1Q2)-80*A1*A2*MT**2*P1Q1/P1Q2+
+ &96*A12*P1P2*P1Q1/P1Q2-320*A1*A2*P1P2*P1Q1/P1Q2-
+ &544*A1*A2*P1Q1**2/(3*P1Q2)-656*A1*A2*P1Q2/3-224*A2**2*P1Q2+
+ &256*A1*MT**2*P1Q2/(3*P1Q1**2)+256*A12*MB*MT**3*P1Q2/(3*P1Q1**2)+
+ &112*A1*P1Q2/P1Q1+272*A2*P1Q2/(3*P1Q1)-
+ &272*A1*A2*MB**2*P1Q2/(3*P1Q1)+208*A12*MB*MT*P1Q2/(3*P1Q1)-
+ &400*A1*A2*MB*MT*P1Q2/(3*P1Q1)-80*A1*A2*MT**2*P1Q2/P1Q1
+ V18=V18+96*A12*P1P2*P1Q2/P1Q1-320*A1*A2*P1P2*P1Q2/P1Q1-
+ &544*A1*A2*P1Q2**2/(3*P1Q1)+128*A2*MB**4/(3*P2Q1**2)+
+ &128*A2*MB**3*MT/(3*P2Q1**2)-256*A2**2*MB**5*MT/(3*P2Q1**2)+
+ &256*A2*MB**2*P1P2/(3*P2Q1**2)-256*A2**2*MB**4*P1P2/(3*P2Q1**2)+
+ &256*A2*MB**2*P1Q1/(3*P2Q1**2)-256*A2**2*MB**4*P1Q1/(3*P2Q1**2)-
+ &64*MB**3*MT**3/(3*P1Q2**2*P2Q1**2)-
+ &64*MB**2*MT**2*P1P2/(3*P1Q2**2*P2Q1**2)-
+ &64*MB**2*MT**2*P1Q1/(3*P1Q2**2*P2Q1**2)+
+ &64*MB**3*MT/(3*P1Q2*P2Q1**2)+
+ &256*A2*MB**3*MT*P1P2/(3*P1Q2*P2Q1**2)+
+ &256*A2*MB**2*P1P2**2/(3*P1Q2*P2Q1**2)+
+ &256*A2*MB**3*MT*P1Q1/(3*P1Q2*P2Q1**2)+
+ &512*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q1**2)+
+ &256*A2*MB**2*P1Q1**2/(3*P1Q2*P2Q1**2)-
+ &256*A2**2*MB**4*P1Q2/(3*P2Q1**2)-8/(3*P2Q1)-72*A1*MB**2/P2Q1-
+ &88*A2*MB**2/(3*P2Q1)+56*A1*MB*MT/(3*P2Q1)+32*A2*MB*MT/P2Q1+
+ &224*A1*A2*MB**3*MT/(3*P2Q1)-704*A2**2*MB**3*MT/(3*P2Q1)
+ V18=V18-48*A1*P1P2/P2Q1-104*A2*P1P2/(3*P2Q1)+
+ &448*A1*A2*MB**2*P1P2/(3*P2Q1)-512*A2**2*MB**2*P1P2/(3*P2Q1)-
+ &128*A1*A2*MB*MT*P1P2/(3*P2Q1)+32*A1*A2*P1P2**2/P2Q1-
+ &16*P1P2/(3*P1Q1*P2Q1)-32*A1*MB*MT*P1P2/(3*P1Q1*P2Q1)-
+ &32*A2*MB*MT*P1P2/(3*P1Q1*P2Q1)-
+ &64*A1*A2*MB*MT*P1P2**2/(3*P1Q1*P2Q1)-
+ &64*A1*A2*P1P2**3/(3*P1Q1*P2Q1)-256*A2*P1Q1/(3*P2Q1)+
+ &448*A1*A2*MB**2*P1Q1/(3*P2Q1)-368*A2**2*MB**2*P1Q1/(3*P2Q1)+
+ &224*A1*A2*MB*MT*P1Q1/(3*P2Q1)+304*A1*A2*P1P2*P1Q1/(3*P2Q1)-
+ &64*MB*MT**3/(3*P1Q2**2*P2Q1)-
+ &256*A1*MB*MT**3*P1P2/(3*P1Q2**2*P2Q1)-
+ &256*A1*MT**2*P1P2**2/(3*P1Q2**2*P2Q1)+
+ &64*MT**2*P1Q1/(3*P1Q2**2*P2Q1)-
+ &128*A1*MB**2*MT**2*P1Q1/(3*P1Q2**2*P2Q1)-
+ &128*A1*MB*MT**3*P1Q1/(3*P1Q2**2*P2Q1)-
+ &256*A1*MT**2*P1P2*P1Q1/(3*P1Q2**2*P2Q1)-4*MB**2/(3*P1Q2*P2Q1)+
+ &64*MB*MT/(3*P1Q2*P2Q1)-128*A2*MB**3*MT/(3*P1Q2*P2Q1)
+ V18=V18-4*MT**2/(3*P1Q2*P2Q1)-128*A1*MB**2*MT**2/(3*P1Q2*P2Q1)-
+ &128*A2*MB**2*MT**2/(3*P1Q2*P2Q1)-128*A1*MB*MT**3/(3*P1Q2*P2Q1)-
+ &112*A2*MB**2*P1P2/(3*P1Q2*P2Q1)-32*A1*MB*MT*P1P2/(3*P1Q2*P2Q1)-
+ &32*A2*MB*MT*P1P2/(3*P1Q2*P2Q1)-112*A1*MT**2*P1P2/(3*P1Q2*P2Q1)-
+ &48*A1*P1P2**2/(P1Q2*P2Q1)-48*A2*P1P2**2/(P1Q2*P2Q1)+
+ &512*A1*A2*MB*MT*P1P2**2/(3*P1Q2*P2Q1)+
+ &512*A1*A2*P1P2**3/(3*P1Q2*P2Q1)-8*MB*MT*P1P2/(3*P1Q1*P1Q2*P2Q1)-
+ &8*MT**2*P1P2/(3*P1Q1*P1Q2*P2Q1)+
+ &32*A1*MB*MT**3*P1P2/(3*P1Q1*P1Q2*P2Q1)-
+ &16*P1P2**2/(3*P1Q1*P1Q2*P2Q1)+
+ &32*A1*MT**2*P1P2**2/(3*P1Q1*P1Q2*P2Q1)+8*P1Q1/(3*P1Q2*P2Q1)-
+ &160*A1*MB**2*P1Q1/(3*P1Q2*P2Q1)-272*A2*MB**2*P1Q1/(3*P1Q2*P2Q1)+
+ &56*A1*MB*MT*P1Q1/(3*P1Q2*P2Q1)+200*A2*MB*MT*P1Q1/(3*P1Q2*P2Q1)-
+ &48*A1*P1P2*P1Q1/(P1Q2*P2Q1)-256*A2*P1P2*P1Q1/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB*MT*P1P2*P1Q1/(P1Q2*P2Q1)+
+ &1024*A1*A2*P1P2**2*P1Q1/(3*P1Q2*P2Q1)
+ V18=V18-272*A2*P1Q1**2/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB**2*P1Q1**2/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB*MT*P1Q1**2/(3*P1Q2*P2Q1)+
+ &512*A1*A2*P1P2*P1Q1**2/(3*P1Q2*P2Q1)+16*A2*P1Q2/(3*P2Q1)+
+ &64*A1*A2*MB**2*P1Q2/P2Q1+32*A2**2*MB**2*P1Q2/(3*P2Q1)+
+ &112*A1*A2*MB*MT*P1Q2/(3*P2Q1)+368*A1*A2*P1P2*P1Q2/(3*P2Q1)+
+ &32*A2*P1P2*P1Q2/(3*P1Q1*P2Q1)-
+ &32*A1*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q1)-
+ &32*A1*A2*MB*MT*P1P2*P1Q2/(3*P1Q1*P2Q1)-
+ &64*A1*A2*P1P2**2*P1Q2/(3*P1Q1*P2Q1)+224*A12*P2Q1+
+ &656*A1*A2*P2Q1/3-256*A1*MT**2*P2Q1/(3*P1Q1**2)+
+ &256*A12*MT**4*P2Q1/(3*P1Q1**2)-256*A1*P2Q1/(3*P1Q1)+
+ &224*A1*A2*MB*MT*P2Q1/(3*P1Q1)-368*A12*MT**2*P2Q1/(3*P1Q1)+
+ &448*A1*A2*MT**2*P2Q1/(3*P1Q1)+304*A1*A2*P1P2*P2Q1/(3*P1Q1)+
+ &256*A12*MT**4*P2Q1/(3*P1Q2**2)+
+ &256*A12*MT**2*P1Q1*P2Q1/(3*P1Q2**2)+16*A1*P2Q1/(3*P1Q2)+
+ &112*A1*A2*MB*MT*P2Q1/(3*P1Q2)+32*A12*MT**2*P2Q1/(3*P1Q2)
+ V18=V18+64*A1*A2*MT**2*P2Q1/P1Q2+368*A1*A2*P1P2*P2Q1/(3*P1Q2)+
+ &16*A1*MT**2*P2Q1/(3*P1Q1*P1Q2)-64*A12*MT**4*P2Q1/(3*P1Q1*P1Q2)+
+ &640*A12*P1Q1*P2Q1/(3*P1Q2)+544*A1*A2*P1Q1*P2Q1/(3*P1Q2)+
+ &32*A12*P1Q2*P2Q1/P1Q1+944*A1*A2*P1Q2*P2Q1/(3*P1Q1)+
+ &128*A2*MB**4/(3*P2Q2**2)+128*A2*MB**3*MT/(3*P2Q2**2)-
+ &256*A2**2*MB**5*MT/(3*P2Q2**2)+256*A2*MB**2*P1P2/(3*P2Q2**2)-
+ &256*A2**2*MB**4*P1P2/(3*P2Q2**2)-
+ &64*MB**3*MT**3/(3*P1Q1**2*P2Q2**2)-
+ &64*MB**2*MT**2*P1P2/(3*P1Q1**2*P2Q2**2)+
+ &64*MB**3*MT/(3*P1Q1*P2Q2**2)+
+ &256*A2*MB**3*MT*P1P2/(3*P1Q1*P2Q2**2)+
+ &256*A2*MB**2*P1P2**2/(3*P1Q1*P2Q2**2)-
+ &256*A2**2*MB**4*P1Q1/(3*P2Q2**2)+256*A2*MB**2*P1Q2/(3*P2Q2**2)-
+ &256*A2**2*MB**4*P1Q2/(3*P2Q2**2)-
+ &64*MB**2*MT**2*P1Q2/(3*P1Q1**2*P2Q2**2)+
+ &256*A2*MB**3*MT*P1Q2/(3*P1Q1*P2Q2**2)+
+ &512*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q2**2)
+ V18=V18+256*A2*MB**2*P1Q2**2/(3*P1Q1*P2Q2**2)-
+ &256*A2*MB**2*P2Q1/(3*P2Q2**2)-256*A2**2*MB**3*MT*P2Q1/(3*P2Q2**2)+
+ &64*MB**2*MT**2*P2Q1/(3*P1Q1**2*P2Q2**2)+
+ &64*MB**2*P2Q1/(3*P1Q1*P2Q2**2)-
+ &128*A2*MB**3*MT*P2Q1/(3*P1Q1*P2Q2**2)-
+ &128*A2*MB**2*MT**2*P2Q1/(3*P1Q1*P2Q2**2)-
+ &256*A2*MB**2*P1P2*P2Q1/(3*P1Q1*P2Q2**2)+
+ &256*A2**2*MB**2*P1Q1*P2Q1/(3*P2Q2**2)-
+ &256*A2*MB**2*P1Q2*P2Q1/(3*P1Q1*P2Q2**2)-8/(3*P2Q2)-
+ &72*A1*MB**2/P2Q2-88*A2*MB**2/(3*P2Q2)+56*A1*MB*MT/(3*P2Q2)+
+ &32*A2*MB*MT/P2Q2+224*A1*A2*MB**3*MT/(3*P2Q2)-
+ &704*A2**2*MB**3*MT/(3*P2Q2)-48*A1*P1P2/P2Q2-
+ &104*A2*P1P2/(3*P2Q2)+448*A1*A2*MB**2*P1P2/(3*P2Q2)-
+ &512*A2**2*MB**2*P1P2/(3*P2Q2)-128*A1*A2*MB*MT*P1P2/(3*P2Q2)+
+ &32*A1*A2*P1P2**2/P2Q2-64*MB*MT**3/(3*P1Q1**2*P2Q2)-
+ &256*A1*MB*MT**3*P1P2/(3*P1Q1**2*P2Q2)-
+ &256*A1*MT**2*P1P2**2/(3*P1Q1**2*P2Q2)-4*MB**2/(3*P1Q1*P2Q2)
+ V18=V18+64*MB*MT/(3*P1Q1*P2Q2)-128*A2*MB**3*MT/(3*P1Q1*P2Q2)-
+ &4*MT**2/(3*P1Q1*P2Q2)-128*A1*MB**2*MT**2/(3*P1Q1*P2Q2)-
+ &128*A2*MB**2*MT**2/(3*P1Q1*P2Q2)-128*A1*MB*MT**3/(3*P1Q1*P2Q2)-
+ &112*A2*MB**2*P1P2/(3*P1Q1*P2Q2)-32*A1*MB*MT*P1P2/(3*P1Q1*P2Q2)-
+ &32*A2*MB*MT*P1P2/(3*P1Q1*P2Q2)-112*A1*MT**2*P1P2/(3*P1Q1*P2Q2)-
+ &48*A1*P1P2**2/(P1Q1*P2Q2)-48*A2*P1P2**2/(P1Q1*P2Q2)+
+ &512*A1*A2*MB*MT*P1P2**2/(3*P1Q1*P2Q2)+
+ &512*A1*A2*P1P2**3/(3*P1Q1*P2Q2)+16*A2*P1Q1/(3*P2Q2)+
+ &64*A1*A2*MB**2*P1Q1/P2Q2+32*A2**2*MB**2*P1Q1/(3*P2Q2)+
+ &112*A1*A2*MB*MT*P1Q1/(3*P2Q2)+368*A1*A2*P1P2*P1Q1/(3*P2Q2)-
+ &16*P1P2/(3*P1Q2*P2Q2)-32*A1*MB*MT*P1P2/(3*P1Q2*P2Q2)-
+ &32*A2*MB*MT*P1P2/(3*P1Q2*P2Q2)-
+ &64*A1*A2*MB*MT*P1P2**2/(3*P1Q2*P2Q2)-
+ &64*A1*A2*P1P2**3/(3*P1Q2*P2Q2)-8*MB*MT*P1P2/(3*P1Q1*P1Q2*P2Q2)-
+ &8*MT**2*P1P2/(3*P1Q1*P1Q2*P2Q2)+
+ &32*A1*MB*MT**3*P1P2/(3*P1Q1*P1Q2*P2Q2)-
+ &16*P1P2**2/(3*P1Q1*P1Q2*P2Q2)
+ V18=V18+32*A1*MT**2*P1P2**2/(3*P1Q1*P1Q2*P2Q2)+
+ &32*A2*P1P2*P1Q1/(3*P1Q2*P2Q2)-
+ &32*A1*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q2)-
+ &32*A1*A2*MB*MT*P1P2*P1Q1/(3*P1Q2*P2Q2)-
+ &64*A1*A2*P1P2**2*P1Q1/(3*P1Q2*P2Q2)-256*A2*P1Q2/(3*P2Q2)+
+ &448*A1*A2*MB**2*P1Q2/(3*P2Q2)-368*A2**2*MB**2*P1Q2/(3*P2Q2)+
+ &224*A1*A2*MB*MT*P1Q2/(3*P2Q2)+304*A1*A2*P1P2*P1Q2/(3*P2Q2)+
+ &64*MT**2*P1Q2/(3*P1Q1**2*P2Q2)-
+ &128*A1*MB**2*MT**2*P1Q2/(3*P1Q1**2*P2Q2)-
+ &128*A1*MB*MT**3*P1Q2/(3*P1Q1**2*P2Q2)-
+ &256*A1*MT**2*P1P2*P1Q2/(3*P1Q1**2*P2Q2)+8*P1Q2/(3*P1Q1*P2Q2)-
+ &160*A1*MB**2*P1Q2/(3*P1Q1*P2Q2)-272*A2*MB**2*P1Q2/(3*P1Q1*P2Q2)+
+ &56*A1*MB*MT*P1Q2/(3*P1Q1*P2Q2)+200*A2*MB*MT*P1Q2/(3*P1Q1*P2Q2)-
+ &48*A1*P1P2*P1Q2/(P1Q1*P2Q2)-256*A2*P1P2*P1Q2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB*MT*P1P2*P1Q2/(P1Q1*P2Q2)+
+ &1024*A1*A2*P1P2**2*P1Q2/(3*P1Q1*P2Q2)
+ V18=V18-272*A2*P1Q2**2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB**2*P1Q2**2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB*MT*P1Q2**2/(3*P1Q1*P2Q2)+
+ &512*A1*A2*P1P2*P1Q2**2/(3*P1Q1*P2Q2)-32*A2*MB**4/(3*P2Q1*P2Q2)-
+ &32*A2*MB**3*MT/(3*P2Q1*P2Q2)+64*A2**2*MB**5*MT/(3*P2Q1*P2Q2)+
+ &16*P1P2/(3*P2Q1*P2Q2)-64*A2*MB**2*P1P2/(3*P2Q1*P2Q2)+
+ &64*A2**2*MB**4*P1P2/(3*P2Q1*P2Q2)+8*MB**2*P1P2/(3*P1Q1*P2Q1*P2Q2)+
+ &8*MB*MT*P1P2/(3*P1Q1*P2Q1*P2Q2)-
+ &32*A2*MB**3*MT*P1P2/(3*P1Q1*P2Q1*P2Q2)+
+ &16*P1P2**2/(3*P1Q1*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2**2/(3*P1Q1*P2Q1*P2Q2)-
+ &16*A2*MB**2*P1Q1/(3*P2Q1*P2Q2)+64*A2**2*MB**4*P1Q1/(3*P2Q1*P2Q2)+
+ &8*MB**2*P1P2/(3*P1Q2*P2Q1*P2Q2)+8*MB*MT*P1P2/(3*P1Q2*P2Q1*P2Q2)-
+ &32*A2*MB**3*MT*P1P2/(3*P1Q2*P2Q1*P2Q2)+
+ &16*P1P2**2/(3*P1Q2*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2**2/(3*P1Q2*P2Q1*P2Q2)+
+ &16*MB*MT*P1P2**2/(3*P1Q1*P1Q2*P2Q1*P2Q2)
+ V18=V18+16*P1P2**3/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q1*P2Q2)-
+ &16*A2*MB**2*P1Q2/(3*P2Q1*P2Q2)+64*A2**2*MB**4*P1Q2/(3*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q1*P2Q2)+272*A1*P2Q1/(3*P2Q2)+
+ &112*A2*P2Q1/P2Q2-80*A1*A2*MB**2*P2Q1/P2Q2-
+ &400*A1*A2*MB*MT*P2Q1/(3*P2Q2)+208*A2**2*MB*MT*P2Q1/(3*P2Q2)-
+ &272*A1*A2*MT**2*P2Q1/(3*P2Q2)-320*A1*A2*P1P2*P2Q1/P2Q2+
+ &96*A2**2*P1P2*P2Q1/P2Q2+256*A1*MB*MT**3*P2Q1/(3*P1Q1**2*P2Q2)+
+ &512*A1*MT**2*P1P2*P2Q1/(3*P1Q1**2*P2Q2)-8*P2Q1/(3*P1Q1*P2Q2)-
+ &200*A1*MB*MT*P2Q1/(3*P1Q1*P2Q2)-56*A2*MB*MT*P2Q1/(3*P1Q1*P2Q2)+
+ &272*A1*MT**2*P2Q1/(3*P1Q1*P2Q2)+160*A2*MT**2*P2Q1/(3*P1Q1*P2Q2)+
+ &256*A1*P1P2*P2Q1/(3*P1Q1*P2Q2)+48*A2*P1P2*P2Q1/(P1Q1*P2Q2)-
+ &256*A1*A2*MB*MT*P1P2*P2Q1/(P1Q1*P2Q2)-
+ &256*A1*A2*MT**2*P1P2*P2Q1/(3*P1Q1*P2Q2)-
+ &1024*A1*A2*P1P2**2*P2Q1/(3*P1Q1*P2Q2)-
+ &544*A1*A2*P1Q1*P2Q1/(3*P2Q2)-640*A2**2*P1Q1*P2Q1/(3*P2Q2)-
+ &32*A1*P1P2*P2Q1/(3*P1Q2*P2Q2)
+ V18=V18+32*A1*A2*MB*MT*P1P2*P2Q1/(3*P1Q2*P2Q2)+
+ &32*A1*A2*MT**2*P1P2*P2Q1/(3*P1Q2*P2Q2)+
+ &64*A1*A2*P1P2**2*P2Q1/(3*P1Q2*P2Q2)-
+ &32*A1*MT**2*P1P2*P2Q1/(3*P1Q1*P1Q2*P2Q2)+
+ &64*A1*A2*P1P2*P1Q1*P2Q1/(3*P1Q2*P2Q2)-
+ &944*A1*A2*P1Q2*P2Q1/(3*P2Q2)-32*A2**2*P1Q2*P2Q1/P2Q2+
+ &256*A1*MT**2*P1Q2*P2Q1/(3*P1Q1**2*P2Q2)+
+ &96*A1*P1Q2*P2Q1/(P1Q1*P2Q2)+96*A2*P1Q2*P2Q1/(P1Q1*P2Q2)-
+ &128*A1*A2*MB**2*P1Q2*P2Q1/(3*P1Q1*P2Q2)-
+ &256*A1*A2*MB*MT*P1Q2*P2Q1/(P1Q1*P2Q2)-
+ &128*A1*A2*MT**2*P1Q2*P2Q1/(3*P1Q1*P2Q2)-
+ &512*A1*A2*P1P2*P1Q2*P2Q1/(P1Q1*P2Q2)-
+ &512*A1*A2*P1Q2**2*P2Q1/(3*P1Q1*P2Q2)+544*A1*A2*P2Q1**2/(3*P2Q2)-
+ &256*A1*MT**2*P2Q1**2/(3*P1Q1**2*P2Q2)-
+ &272*A1*P2Q1**2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB*MT*P2Q1**2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MT**2*P2Q1**2/(3*P1Q1*P2Q2)
+ V18=V18+512*A1*A2*P1P2*P2Q1**2/(3*P1Q1*P2Q2)+
+ &512*A1*A2*P1Q2*P2Q1**2/(3*P1Q1*P2Q2)+224*A12*P2Q2+
+ &656*A1*A2*P2Q2/3+256*A12*MT**4*P2Q2/(3*P1Q1**2)+
+ &16*A1*P2Q2/(3*P1Q1)+112*A1*A2*MB*MT*P2Q2/(3*P1Q1)+
+ &32*A12*MT**2*P2Q2/(3*P1Q1)+64*A1*A2*MT**2*P2Q2/P1Q1+
+ &368*A1*A2*P1P2*P2Q2/(3*P1Q1)-256*A1*MT**2*P2Q2/(3*P1Q2**2)+
+ &256*A12*MT**4*P2Q2/(3*P1Q2**2)-256*A1*P2Q2/(3*P1Q2)+
+ &224*A1*A2*MB*MT*P2Q2/(3*P1Q2)-368*A12*MT**2*P2Q2/(3*P1Q2)+
+ &448*A1*A2*MT**2*P2Q2/(3*P1Q2)+304*A1*A2*P1P2*P2Q2/(3*P1Q2)+
+ &16*A1*MT**2*P2Q2/(3*P1Q1*P1Q2)-64*A12*MT**4*P2Q2/(3*P1Q1*P1Q2)+
+ &32*A12*P1Q1*P2Q2/P1Q2+944*A1*A2*P1Q1*P2Q2/(3*P1Q2)+
+ &256*A12*MT**2*P1Q2*P2Q2/(3*P1Q1**2)+
+ &640*A12*P1Q2*P2Q2/(3*P1Q1)+544*A1*A2*P1Q2*P2Q2/(3*P1Q1)-
+ &256*A2*MB**2*P2Q2/(3*P2Q1**2)-256*A2**2*MB**3*MT*P2Q2/(3*P2Q1**2)+
+ &64*MB**2*MT**2*P2Q2/(3*P1Q2**2*P2Q1**2)+
+ &64*MB**2*P2Q2/(3*P1Q2*P2Q1**2)-
+ &128*A2*MB**3*MT*P2Q2/(3*P1Q2*P2Q1**2)
+ V18=V18-128*A2*MB**2*MT**2*P2Q2/(3*P1Q2*P2Q1**2)-
+ &256*A2*MB**2*P1P2*P2Q2/(3*P1Q2*P2Q1**2)-
+ &256*A2*MB**2*P1Q1*P2Q2/(3*P1Q2*P2Q1**2)+
+ &256*A2**2*MB**2*P1Q2*P2Q2/(3*P2Q1**2)+272*A1*P2Q2/(3*P2Q1)+
+ &112*A2*P2Q2/P2Q1-80*A1*A2*MB**2*P2Q2/P2Q1-
+ &400*A1*A2*MB*MT*P2Q2/(3*P2Q1)+208*A2**2*MB*MT*P2Q2/(3*P2Q1)-
+ &272*A1*A2*MT**2*P2Q2/(3*P2Q1)-320*A1*A2*P1P2*P2Q2/P2Q1+
+ &96*A2**2*P1P2*P2Q2/P2Q1-32*A1*P1P2*P2Q2/(3*P1Q1*P2Q1)+
+ &32*A1*A2*MB*MT*P1P2*P2Q2/(3*P1Q1*P2Q1)+
+ &32*A1*A2*MT**2*P1P2*P2Q2/(3*P1Q1*P2Q1)+
+ &64*A1*A2*P1P2**2*P2Q2/(3*P1Q1*P2Q1)-944*A1*A2*P1Q1*P2Q2/(3*P2Q1)-
+ &32*A2**2*P1Q1*P2Q2/P2Q1+256*A1*MB*MT**3*P2Q2/(3*P1Q2**2*P2Q1)+
+ &512*A1*MT**2*P1P2*P2Q2/(3*P1Q2**2*P2Q1)+
+ &256*A1*MT**2*P1Q1*P2Q2/(3*P1Q2**2*P2Q1)-8*P2Q2/(3*P1Q2*P2Q1)-
+ &200*A1*MB*MT*P2Q2/(3*P1Q2*P2Q1)-56*A2*MB*MT*P2Q2/(3*P1Q2*P2Q1)+
+ &272*A1*MT**2*P2Q2/(3*P1Q2*P2Q1)+160*A2*MT**2*P2Q2/(3*P1Q2*P2Q1)+
+ &256*A1*P1P2*P2Q2/(3*P1Q2*P2Q1)+48*A2*P1P2*P2Q2/(P1Q2*P2Q1)
+ V18=V18-256*A1*A2*MB*MT*P1P2*P2Q2/(P1Q2*P2Q1)-
+ &256*A1*A2*MT**2*P1P2*P2Q2/(3*P1Q2*P2Q1)-
+ &1024*A1*A2*P1P2**2*P2Q2/(3*P1Q2*P2Q1)-
+ &32*A1*MT**2*P1P2*P2Q2/(3*P1Q1*P1Q2*P2Q1)+
+ &96*A1*P1Q1*P2Q2/(P1Q2*P2Q1)+96*A2*P1Q1*P2Q2/(P1Q2*P2Q1)-
+ &128*A1*A2*MB**2*P1Q1*P2Q2/(3*P1Q2*P2Q1)-
+ &256*A1*A2*MB*MT*P1Q1*P2Q2/(P1Q2*P2Q1)-
+ &128*A1*A2*MT**2*P1Q1*P2Q2/(3*P1Q2*P2Q1)-
+ &512*A1*A2*P1P2*P1Q1*P2Q2/(P1Q2*P2Q1)-
+ &512*A1*A2*P1Q1**2*P2Q2/(3*P1Q2*P2Q1)-544*A1*A2*P1Q2*P2Q2/(3*P2Q1)-
+ &640*A2**2*P1Q2*P2Q2/(3*P2Q1)+
+ &64*A1*A2*P1P2*P1Q2*P2Q2/(3*P1Q1*P2Q1)+544*A1*A2*P2Q2**2/(3*P2Q1)-
+ &256*A1*MT**2*P2Q2**2/(3*P1Q2**2*P2Q1)-
+ &272*A1*P2Q2**2/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB*MT*P2Q2**2/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MT**2*P2Q2**2/(3*P1Q2*P2Q1)+
+ &512*A1*A2*P1P2*P2Q2**2/(3*P1Q2*P2Q1)
+ V18=V18+512*A1*A2*P1Q1*P2Q2**2/(3*P1Q2*P2Q1)+
+ &384*A12*MB*MT*P1Q1**2/S**2+
+ &384*A12*P1P2*P1Q1**2/S**2+2688*A12*MB*MT*P1Q1*P1Q2/S**2+
+ &2688*A12*P1P2*P1Q1*P1Q2/S**2+384*A12*MB*MT*P1Q2**2/S**2+
+ &384*A12*P1P2*P1Q2**2/S**2+768*A1*A2*MB*MT*P1Q1*P2Q1/S**2+
+ &768*A1*A2*P1P2*P1Q1*P2Q1/S**2+2688*A1*A2*MB*MT*P1Q2*P2Q1/S**2+
+ &2688*A1*A2*P1P2*P1Q2*P2Q1/S**2-960*A12*P1Q1*P1Q2*P2Q1/S**2-
+ &960*A1*A2*P1Q1*P1Q2*P2Q1/S**2+960*A12*P1Q2**2*P2Q1/S**2+
+ &960*A1*A2*P1Q2**2*P2Q1/S**2+384*A2**2*MB*MT*P2Q1**2/S**2+
+ &384*A2**2*P1P2*P2Q1**2/S**2-960*A1*A2*P1Q2*P2Q1**2/S**2-
+ &960*A2**2*P1Q2*P2Q1**2/S**2+2688*A1*A2*MB*MT*P1Q1*P2Q2/S**2+
+ &2688*A1*A2*P1P2*P1Q1*P2Q2/S**2+960*A12*P1Q1**2*P2Q2/S**2+
+ &960*A1*A2*P1Q1**2*P2Q2/S**2+768*A1*A2*MB*MT*P1Q2*P2Q2/S**2+
+ &768*A1*A2*P1P2*P1Q2*P2Q2/S**2-960*A12*P1Q1*P1Q2*P2Q2/S**2-
+ &960*A1*A2*P1Q1*P1Q2*P2Q2/S**2+2688*A2**2*MB*MT*P2Q1*P2Q2/S**2+
+ &2688*A2**2*P1P2*P2Q1*P2Q2/S**2+960*A1*A2*P1Q1*P2Q1*P2Q2/S**2+
+ &960*A2**2*P1Q1*P2Q1*P2Q2/S**2+960*A1*A2*P1Q2*P2Q1*P2Q2/S**2+
+ &960*A2**2*P1Q2*P2Q1*P2Q2/S**2+384*A2**2*MB*MT*P2Q2**2/S**2
+ V18=V18+384*A2**2*P1P2*P2Q2**2/S**2-960*A1*A2*P1Q1*P2Q2**2/S**2-
+ &960*A2**2*P1Q1*P2Q2**2/S**2+96*A1*MB*MT/S+96*A2*MB*MT/S-
+ &768*A2**2*MB**3*MT/S-768*A12*MB*MT**3/S-192*A1*P1P2/S-
+ &192*A2*P1P2/S-768*A2**2*MB**2*P1P2/S-2304*A1*A2*MB*MT*P1P2/S-
+ &768*A12*MT**2*P1P2/S-2304*A1*A2*P1P2**2/S-
+ &96*A1*MB*MT**3/(P1Q1*S)-192*A2*MB*MT*P1P2/(P1Q1*S)-
+ &96*A1*MT**2*P1P2/(P1Q1*S)-192*A2*P1P2**2/(P1Q1*S)-192*A1*P1Q1/S-
+ &144*A2*P1Q1/S-384*A1*A2*MB**2*P1Q1/S-480*A2**2*MB**2*P1Q1/S-
+ &480*A12*MB*MT*P1Q1/S+96*A1*A2*MB*MT*P1Q1/S-
+ &864*A12*P1P2*P1Q1/S-672*A1*A2*P1P2*P1Q1/S-96*A1*A2*P1Q1**2/S-
+ &96*A1*MB*MT**3/(P1Q2*S)-192*A2*MB*MT*P1P2/(P1Q2*S)-
+ &96*A1*MT**2*P1P2/(P1Q2*S)-192*A2*P1P2**2/(P1Q2*S)-
+ &48*A1*MB*MT*P1Q1/(P1Q2*S)+96*A2*MB*MT*P1Q1/(P1Q2*S)-
+ &48*A1*MT**2*P1Q1/(P1Q2*S)-192*A1*P1P2*P1Q1/(P1Q2*S)-
+ &192*A2*P1P2*P1Q1/(P1Q2*S)+192*A1*A2*MB*MT*P1P2*P1Q1/(P1Q2*S)+
+ &192*A1*A2*P1P2**2*P1Q1/(P1Q2*S)-192*A1*P1Q1**2/(P1Q2*S)-
+ &192*A2*P1Q1**2/(P1Q2*S)+192*A1*A2*MB**2*P1Q1**2/(P1Q2*S)
+ V18=V18-192*A12*MB*MT*P1Q1**2/(P1Q2*S)+
+ &96*A1*A2*MB*MT*P1Q1**2/(P1Q2*S)+
+ &192*A1*A2*P1P2*P1Q1**2/(P1Q2*S)-192*A1*P1Q2/S-144*A2*P1Q2/S-
+ &384*A1*A2*MB**2*P1Q2/S-480*A2**2*MB**2*P1Q2/S-
+ &480*A12*MB*MT*P1Q2/S+96*A1*A2*MB*MT*P1Q2/S-
+ &864*A12*P1P2*P1Q2/S-672*A1*A2*P1P2*P1Q2/S-
+ &48*A1*MB*MT*P1Q2/(P1Q1*S)+96*A2*MB*MT*P1Q2/(P1Q1*S)-
+ &48*A1*MT**2*P1Q2/(P1Q1*S)-192*A1*P1P2*P1Q2/(P1Q1*S)-
+ &192*A2*P1P2*P1Q2/(P1Q1*S)+192*A1*A2*MB*MT*P1P2*P1Q2/(P1Q1*S)+
+ &192*A1*A2*P1P2**2*P1Q2/(P1Q1*S)-576*A1*A2*P1Q1*P1Q2/S-
+ &96*A1*A2*P1Q2**2/S-192*A1*P1Q2**2/(P1Q1*S)-
+ &192*A2*P1Q2**2/(P1Q1*S)+192*A1*A2*MB**2*P1Q2**2/(P1Q1*S)-
+ &192*A12*MB*MT*P1Q2**2/(P1Q1*S)+96*A1*A2*MB*MT*P1Q2**2/(P1Q1*S)+
+ &192*A1*A2*P1P2*P1Q2**2/(P1Q1*S)+96*A2*MB**3*MT/(P2Q1*S)+
+ &96*A2*MB**2*P1P2/(P2Q1*S)+192*A1*MB*MT*P1P2/(P2Q1*S)+
+ &192*A1*P1P2**2/(P2Q1*S)+96*A1*MB**2*P1Q1/(P2Q1*S)+
+ &192*A2*MB**2*P1Q1/(P2Q1*S)+96*A1*MB*MT*P1Q1/(P2Q1*S)+
+ &192*A1*A2*MB**3*MT*P1Q1/(P2Q1*S)+192*A1*P1P2*P1Q1/(P2Q1*S)
+ V18=V18+192*A1*A2*MB**2*P1P2*P1Q1/(P2Q1*S)+
+ &96*A1*A2*MB**2*P1Q1**2/(P2Q1*S)+
+ &192*A2*MB**3*MT*P1Q1/(P1Q2*P2Q1*S)+
+ &192*A2*MB**2*P1P2*P1Q1/(P1Q2*P2Q1*S)+
+ &96*A1*MB*MT*P1P2*P1Q1/(P1Q2*P2Q1*S)+
+ &96*A1*P1P2**2*P1Q1/(P1Q2*P2Q1*S)+
+ &96*A1*MB**2*P1Q1**2/(P1Q2*P2Q1*S)+
+ &192*A2*MB**2*P1Q1**2/(P1Q2*P2Q1*S)+
+ &48*A1*MB*MT*P1Q1**2/(P1Q2*P2Q1*S)+
+ &96*A1*P1P2*P1Q1**2/(P1Q2*P2Q1*S)+96*A1*MB**2*P1Q2/(P2Q1*S)+
+ &48*A2*MB**2*P1Q2/(P2Q1*S)-192*A1*A2*MB**3*MT*P1Q2/(P2Q1*S)-
+ &192*A1*A2*MB**2*P1P2*P1Q2/(P2Q1*S)-
+ &96*A1*A2*MB**2*P1Q2**2/(P2Q1*S)+144*A1*P2Q1/S+192*A2*P2Q1/S-
+ &96*A1*A2*MB*MT*P2Q1/S+480*A2**2*MB*MT*P2Q1/S+
+ &480*A12*MT**2*P2Q1/S+384*A1*A2*MT**2*P2Q1/S+
+ &672*A1*A2*P1P2*P2Q1/S+864*A2**2*P1P2*P2Q1/S+
+ &96*A2*MB*MT*P2Q1/(P1Q1*S)+192*A1*MT**2*P2Q1/(P1Q1*S)
+ V18=V18+96*A2*MT**2*P2Q1/(P1Q1*S)+
+ &192*A1*A2*MB*MT**3*P2Q1/(P1Q1*S)+
+ &192*A2*P1P2*P2Q1/(P1Q1*S)+192*A1*A2*MT**2*P1P2*P2Q1/(P1Q1*S)-
+ &192*A12*P1Q1*P2Q1/S-192*A2**2*P1Q1*P2Q1/S+
+ &48*A1*MT**2*P2Q1/(P1Q2*S)+96*A2*MT**2*P2Q1/(P1Q2*S)-
+ &192*A1*A2*MB*MT**3*P2Q1/(P1Q2*S)-
+ &192*A1*A2*MT**2*P1P2*P2Q1/(P1Q2*S)-
+ &96*A1*A2*MB*MT*P1Q1*P2Q1/(P1Q2*S)-
+ &192*A12*MT**2*P1Q1*P2Q1/(P1Q2*S)-
+ &96*A1*A2*MT**2*P1Q1*P2Q1/(P1Q2*S)-
+ &384*A1*A2*P1P2*P1Q1*P2Q1/(P1Q2*S)-384*A12*P1Q1**2*P2Q1/(P1Q2*S)-
+ &384*A1*A2*P1Q1**2*P2Q1/(P1Q2*S)-480*A12*P1Q2*P2Q1/S-
+ &960*A1*A2*P1Q2*P2Q1/S-480*A2**2*P1Q2*P2Q1/S+
+ &144*A1*P1Q2*P2Q1/(P1Q1*S)+96*A2*P1Q2*P2Q1/(P1Q1*S)-
+ &384*A1*A2*MB*MT*P1Q2*P2Q1/(P1Q1*S)-
+ &96*A12*MT**2*P1Q2*P2Q1/(P1Q1*S)+
+ &96*A1*A2*MT**2*P1Q2*P2Q1/(P1Q1*S)-
+ &576*A1*A2*P1P2*P1Q2*P2Q1/(P1Q1*S)-192*A12*P1Q2**2*P2Q1/(P1Q1*S)
+ V18=V18-384*A1*A2*P1Q2**2*P2Q1/(P1Q1*S)-96*A1*A2*P2Q1**2/S-
+ &96*A1*A2*MT**2*P2Q1**2/(P1Q1*S)+96*A1*A2*MT**2*P2Q1**2/(P1Q2*S)+
+ &288*A1*A2*P1Q2*P2Q1**2/(P1Q1*S)+96*A2*MB**3*MT/(P2Q2*S)+
+ &96*A2*MB**2*P1P2/(P2Q2*S)+192*A1*MB*MT*P1P2/(P2Q2*S)+
+ &192*A1*P1P2**2/(P2Q2*S)+96*A1*MB**2*P1Q1/(P2Q2*S)+
+ &48*A2*MB**2*P1Q1/(P2Q2*S)-192*A1*A2*MB**3*MT*P1Q1/(P2Q2*S)-
+ &192*A1*A2*MB**2*P1P2*P1Q1/(P2Q2*S)-
+ &96*A1*A2*MB**2*P1Q1**2/(P2Q2*S)+96*A1*MB**2*P1Q2/(P2Q2*S)+
+ &192*A2*MB**2*P1Q2/(P2Q2*S)+96*A1*MB*MT*P1Q2/(P2Q2*S)+
+ &192*A1*A2*MB**3*MT*P1Q2/(P2Q2*S)+192*A1*P1P2*P1Q2/(P2Q2*S)+
+ &192*A1*A2*MB**2*P1P2*P1Q2/(P2Q2*S)+
+ &192*A2*MB**3*MT*P1Q2/(P1Q1*P2Q2*S)+
+ &192*A2*MB**2*P1P2*P1Q2/(P1Q1*P2Q2*S)+
+ &96*A1*MB*MT*P1P2*P1Q2/(P1Q1*P2Q2*S)+
+ &96*A1*P1P2**2*P1Q2/(P1Q1*P2Q2*S)+96*A1*A2*MB**2*P1Q2**2/(P2Q2*S)+
+ &96*A1*MB**2*P1Q2**2/(P1Q1*P2Q2*S)+
+ &192*A2*MB**2*P1Q2**2/(P1Q1*P2Q2*S)
+ V18=V18+48*A1*MB*MT*P1Q2**2/(P1Q1*P2Q2*S)+
+ &96*A1*P1P2*P1Q2**2/(P1Q1*P2Q2*S)-48*A2*MB**2*P2Q1/(P2Q2*S)+
+ &96*A1*MB*MT*P2Q1/(P2Q2*S)-48*A2*MB*MT*P2Q1/(P2Q2*S)-
+ &192*A1*P1P2*P2Q1/(P2Q2*S)-192*A2*P1P2*P2Q1/(P2Q2*S)+
+ &192*A1*A2*MB*MT*P1P2*P2Q1/(P2Q2*S)+
+ &192*A1*A2*P1P2**2*P2Q1/(P2Q2*S)-
+ &192*A1*MB*MT**3*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A2*MB*MT*P1P2*P2Q1/(P1Q1*P2Q2*S)-
+ &192*A1*MT**2*P1P2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A2*P1P2**2*P2Q1/(P1Q1*P2Q2*S)+
+ &96*A1*A2*MB**2*P1Q1*P2Q1/(P2Q2*S)+
+ &192*A2**2*MB**2*P1Q1*P2Q1/(P2Q2*S)+
+ &96*A1*A2*MB*MT*P1Q1*P2Q1/(P2Q2*S)+
+ &384*A1*A2*P1P2*P1Q1*P2Q1/(P2Q2*S)-96*A1*P1Q2*P2Q1/(P2Q2*S)-
+ &144*A2*P1Q2*P2Q1/(P2Q2*S)-96*A1*A2*MB**2*P1Q2*P2Q1/(P2Q2*S)+
+ &96*A2**2*MB**2*P1Q2*P2Q1/(P2Q2*S)+
+ &384*A1*A2*MB*MT*P1Q2*P2Q1/(P2Q2*S)
+ V18=V18+576*A1*A2*P1P2*P1Q2*P2Q1/(P2Q2*S)-
+ &96*A2*MB**2*P1Q2*P2Q1/(P1Q1*P2Q2*S)+
+ &48*A1*MB*MT*P1Q2*P2Q1/(P1Q1*P2Q2*S)+
+ &48*A2*MB*MT*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A1*MT**2*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A1*P1P2*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A2*P1P2*P1Q2*P2Q1/(P1Q1*P2Q2*S)+
+ &96*A1*A2*P1Q1*P1Q2*P2Q1/(P2Q2*S)+288*A1*A2*P1Q2**2*P2Q1/(P2Q2*S)-
+ &96*A1*P1Q2**2*P2Q1/(P1Q1*P2Q2*S)-96*A2*P1Q2**2*P2Q1/(P1Q1*P2Q2*S)+
+ &192*A1*P2Q1**2/(P2Q2*S)+192*A2*P2Q1**2/(P2Q2*S)-
+ &96*A1*A2*MB*MT*P2Q1**2/(P2Q2*S)+192*A2**2*MB*MT*P2Q1**2/(P2Q2*S)-
+ &192*A1*A2*MT**2*P2Q1**2/(P2Q2*S)-192*A1*A2*P1P2*P2Q1**2/(P2Q2*S)+
+ &48*A2*MB*MT*P2Q1**2/(P1Q1*P2Q2*S)+
+ &192*A1*MT**2*P2Q1**2/(P1Q1*P2Q2*S)+
+ &96*A2*MT**2*P2Q1**2/(P1Q1*P2Q2*S)+
+ &96*A2*P1P2*P2Q1**2/(P1Q1*P2Q2*S)-384*A1*A2*P1Q1*P2Q1**2/(P2Q2*S)-
+ &384*A2**2*P1Q1*P2Q1**2/(P2Q2*S)-384*A1*A2*P1Q2*P2Q1**2/(P2Q2*S)
+ V18=V18-192*A2**2*P1Q2*P2Q1**2/(P2Q2*S)+
+ &96*A1*P1Q2*P2Q1**2/(P1Q1*P2Q2*S)+
+ &96*A2*P1Q2*P2Q1**2/(P1Q1*P2Q2*S)+144*A1*P2Q2/S+192*A2*P2Q2/S-
+ &96*A1*A2*MB*MT*P2Q2/S+480*A2**2*MB*MT*P2Q2/S+
+ &480*A12*MT**2*P2Q2/S+384*A1*A2*MT**2*P2Q2/S+
+ &672*A1*A2*P1P2*P2Q2/S+864*A2**2*P1P2*P2Q2/S+
+ &48*A1*MT**2*P2Q2/(P1Q1*S)+96*A2*MT**2*P2Q2/(P1Q1*S)-
+ &192*A1*A2*MB*MT**3*P2Q2/(P1Q1*S)-
+ &192*A1*A2*MT**2*P1P2*P2Q2/(P1Q1*S)-480*A12*P1Q1*P2Q2/S-
+ &960*A1*A2*P1Q1*P2Q2/S-480*A2**2*P1Q1*P2Q2/S+
+ &96*A2*MB*MT*P2Q2/(P1Q2*S)+192*A1*MT**2*P2Q2/(P1Q2*S)+
+ &96*A2*MT**2*P2Q2/(P1Q2*S)+192*A1*A2*MB*MT**3*P2Q2/(P1Q2*S)+
+ &192*A2*P1P2*P2Q2/(P1Q2*S)+192*A1*A2*MT**2*P1P2*P2Q2/(P1Q2*S)+
+ &144*A1*P1Q1*P2Q2/(P1Q2*S)+96*A2*P1Q1*P2Q2/(P1Q2*S)-
+ &384*A1*A2*MB*MT*P1Q1*P2Q2/(P1Q2*S)-
+ &96*A12*MT**2*P1Q1*P2Q2/(P1Q2*S)+
+ &96*A1*A2*MT**2*P1Q1*P2Q2/(P1Q2*S)
+ V18=V18-576*A1*A2*P1P2*P1Q1*P2Q2/(P1Q2*S)-
+ &192*A12*P1Q1**2*P2Q2/(P1Q2*S)-
+ &384*A1*A2*P1Q1**2*P2Q2/(P1Q2*S)-192*A12*P1Q2*P2Q2/S-
+ &192*A2**2*P1Q2*P2Q2/S-96*A1*A2*MB*MT*P1Q2*P2Q2/(P1Q1*S)-
+ &192*A12*MT**2*P1Q2*P2Q2/(P1Q1*S)-
+ &96*A1*A2*MT**2*P1Q2*P2Q2/(P1Q1*S)-
+ &384*A1*A2*P1P2*P1Q2*P2Q2/(P1Q1*S)-384*A12*P1Q2**2*P2Q2/(P1Q1*S)-
+ &384*A1*A2*P1Q2**2*P2Q2/(P1Q1*S)-48*A2*MB**2*P2Q2/(P2Q1*S)+
+ &96*A1*MB*MT*P2Q2/(P2Q1*S)-48*A2*MB*MT*P2Q2/(P2Q1*S)-
+ &192*A1*P1P2*P2Q2/(P2Q1*S)-192*A2*P1P2*P2Q2/(P2Q1*S)+
+ &192*A1*A2*MB*MT*P1P2*P2Q2/(P2Q1*S)+
+ &192*A1*A2*P1P2**2*P2Q2/(P2Q1*S)-96*A1*P1Q1*P2Q2/(P2Q1*S)-
+ &144*A2*P1Q1*P2Q2/(P2Q1*S)-96*A1*A2*MB**2*P1Q1*P2Q2/(P2Q1*S)+
+ &96*A2**2*MB**2*P1Q1*P2Q2/(P2Q1*S)+
+ &384*A1*A2*MB*MT*P1Q1*P2Q2/(P2Q1*S)+
+ &576*A1*A2*P1P2*P1Q1*P2Q2/(P2Q1*S)+288*A1*A2*P1Q1**2*P2Q2/(P2Q1*S)-
+ &192*A1*MB*MT**3*P2Q2/(P1Q2*P2Q1*S)
+ V18=V18-96*A2*MB*MT*P1P2*P2Q2/(P1Q2*P2Q1*S)-
+ &192*A1*MT**2*P1P2*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A2*P1P2**2*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A2*MB**2*P1Q1*P2Q2/(P1Q2*P2Q1*S)+
+ &48*A1*MB*MT*P1Q1*P2Q2/(P1Q2*P2Q1*S)
+
+ V18BIS=
+ &48*A2*MB*MT*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A1*MT**2*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A1*P1P2*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A2*P1P2*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A1*P1Q1**2*P2Q2/(P1Q2*P2Q1*S)-96*A2*P1Q1**2*P2Q2/(P1Q2*P2Q1*S)+
+ &96*A1*A2*MB**2*P1Q2*P2Q2/(P2Q1*S)+
+ &192*A2**2*MB**2*P1Q2*P2Q2/(P2Q1*S)+
+ &96*A1*A2*MB*MT*P1Q2*P2Q2/(P2Q1*S)+
+ &384*A1*A2*P1P2*P1Q2*P2Q2/(P2Q1*S)+
+ &96*A1*A2*P1Q1*P1Q2*P2Q2/(P2Q1*S)-576*A1*A2*P2Q1*P2Q2/S+
+ &96*A1*A2*P1Q1*P2Q1*P2Q2/(P1Q2*S)+96*A1*A2*P1Q2*P2Q1*P2Q2/(P1Q1*S)-
+ &96*A1*A2*P2Q2**2/S+96*A1*A2*MT**2*P2Q2**2/(P1Q1*S)-
+ &96*A1*A2*MT**2*P2Q2**2/(P1Q2*S)+288*A1*A2*P1Q1*P2Q2**2/(P1Q2*S)+
+ &192*A1*P2Q2**2/(P2Q1*S)+192*A2*P2Q2**2/(P2Q1*S)-
+ &96*A1*A2*MB*MT*P2Q2**2/(P2Q1*S)+192*A2**2*MB*MT*P2Q2**2/(P2Q1*S)-
+ &192*A1*A2*MT**2*P2Q2**2/(P2Q1*S)-192*A1*A2*P1P2*P2Q2**2/(P2Q1*S)
+ V18BIS=V18BIS-384*A1*A2*P1Q1*P2Q2**2/(P2Q1*S)-
+ &192*A2**2*P1Q1*P2Q2**2/(P2Q1*S)+
+ &48*A2*MB*MT*P2Q2**2/(P1Q2*P2Q1*S)+
+ &192*A1*MT**2*P2Q2**2/(P1Q2*P2Q1*S)+
+ &96*A2*MT**2*P2Q2**2/(P1Q2*P2Q1*S)+
+ &96*A2*P1P2*P2Q2**2/(P1Q2*P2Q1*S)+96*A1*P1Q1*P2Q2**2/(P1Q2*P2Q1*S)+
+ &96*A2*P1Q1*P2Q2**2/(P1Q2*P2Q1*S)-384*A1*A2*P1Q2*P2Q2**2/(P2Q1*S)-
+ &384*A2**2*P1Q2*P2Q2**2/(P2Q1*S)+512*A1*A2*S/3-
+ &128*A1*MT**2*S/(3*P1Q1**2)-128*A12*MB*MT**3*S/(3*P1Q1**2)-
+ &152*A1*S/(3*P1Q1)+152*A12*MB*MT*S/(3*P1Q1)+
+ &128*A1*A2*MB*MT*S/(3*P1Q1)+112*A1*A2*MT**2*S/(3*P1Q1)-
+ &16*A12*P1P2*S/P1Q1+152*A1*A2*P1P2*S/(3*P1Q1)-
+ &128*A1*MT**2*S/(3*P1Q2**2)-128*A12*MB*MT**3*S/(3*P1Q2**2)-
+ &152*A1*S/(3*P1Q2)+152*A12*MB*MT*S/(3*P1Q2)+
+ &128*A1*A2*MB*MT*S/(3*P1Q2)+112*A1*A2*MT**2*S/(3*P1Q2)-
+ &16*A12*P1P2*S/P1Q2+152*A1*A2*P1P2*S/(3*P1Q2)-
+ &16*A1*MB*MT*S/(3*P1Q1*P1Q2)+32*A12*MB*MT**3*S/(3*P1Q1*P1Q2)
+ V18BIS=V18BIS-16*A1*P1P2*S/(3*P1Q1*P1Q2)+
+ &272*A1*A2*P1Q1*S/(3*P1Q2)+
+ &272*A1*A2*P1Q2*S/(3*P1Q1)-128*A2*MB**2*S/(3*P2Q1**2)-
+ &128*A2**2*MB**3*MT*S/(3*P2Q1**2)+
+ &32*MB**2*MT**2*S/(3*P1Q2**2*P2Q1**2)+32*MB**2*S/(3*P1Q2*P2Q1**2)-
+ &64*A2*MB**3*MT*S/(3*P1Q2*P2Q1**2)-
+ &64*A2*MB**2*MT**2*S/(3*P1Q2*P2Q1**2)-
+ &128*A2*MB**2*P1P2*S/(3*P1Q2*P2Q1**2)-
+ &128*A2*MB**2*P1Q1*S/(3*P1Q2*P2Q1**2)+
+ &128*A2**2*MB**2*P1Q2*S/(3*P2Q1**2)+152*A2*S/(3*P2Q1)-
+ &112*A1*A2*MB**2*S/(3*P2Q1)-128*A1*A2*MB*MT*S/(3*P2Q1)-
+ &152*A2**2*MB*MT*S/(3*P2Q1)-152*A1*A2*P1P2*S/(3*P2Q1)+
+ &16*A2**2*P1P2*S/P2Q1+8*A1*A2*MB**3*MT*S/(3*P1Q1*P2Q1)+
+ &16*A1*A2*MB**2*MT**2*S/(3*P1Q1*P2Q1)+
+ &8*A1*A2*MB*MT**3*S/(3*P1Q1*P2Q1)-8*A1*P1P2*S/(3*P1Q1*P2Q1)-
+ &8*A2*P1P2*S/(3*P1Q1*P2Q1)+8*A1*A2*MB**2*P1P2*S/(3*P1Q1*P2Q1)+
+ &16*A1*A2*MB*MT*P1P2*S/(3*P1Q1*P2Q1)
+ V18BIS=V18BIS+8*A1*A2*MT**2*P1P2*S/(3*P1Q1*P2Q1)+
+ &32*A1*A2*P1P2**2*S/(3*P1Q1*P2Q1)-32*A2**2*P1Q1*S/(3*P2Q1)-
+ &32*MT**2*S/(3*P1Q2**2*P2Q1)+64*A1*MB**2*MT**2*S/(3*P1Q2**2*P2Q1)+
+ &64*A1*MB*MT**3*S/(3*P1Q2**2*P2Q1)+
+ &128*A1*MT**2*P1P2*S/(3*P1Q2**2*P2Q1)-12*S/(P1Q2*P2Q1)+
+ &24*A1*MB**2*S/(P1Q2*P2Q1)-64*A1*A2*MB**3*MT*S/(3*P1Q2*P2Q1)+
+ &24*A2*MT**2*S/(P1Q2*P2Q1)-128*A1*A2*MB**2*MT**2*S/(3*P1Q2*P2Q1)-
+ &64*A1*A2*MB*MT**3*S/(3*P1Q2*P2Q1)+56*A1*P1P2*S/(3*P1Q2*P2Q1)+
+ &56*A2*P1P2*S/(3*P1Q2*P2Q1)-64*A1*A2*MB**2*P1P2*S/(3*P1Q2*P2Q1)-
+ &128*A1*A2*MB*MT*P1P2*S/(3*P1Q2*P2Q1)-
+ &64*A1*A2*MT**2*P1P2*S/(3*P1Q2*P2Q1)-
+ &256*A1*A2*P1P2**2*S/(3*P1Q2*P2Q1)+4*P1P2*S/(3*P1Q1*P1Q2*P2Q1)+
+ &8*A1*MB*MT*P1P2*S/(3*P1Q1*P1Q2*P2Q1)-
+ &8*A1*MT**2*P1P2*S/(3*P1Q1*P1Q2*P2Q1)+136*A2*P1Q1*S/(3*P1Q2*P2Q1)-
+ &128*A1*A2*MB**2*P1Q1*S/(3*P1Q2*P2Q1)-
+ &128*A1*A2*MB*MT*P1Q1*S/(3*P1Q2*P2Q1)-
+ &256*A1*A2*P1P2*P1Q1*S/(3*P1Q2*P2Q1)-160*A2**2*P1Q2*S/(3*P2Q1)
+ V18BIS=V18BIS+16*A1*A2*P1P2*P1Q2*S/(3*P1Q1*P2Q1)-
+ &32*A12*P2Q1*S/(3*P1Q1)-
+ &128*A12*MT**2*P2Q1*S/(3*P1Q2**2)-160*A12*P2Q1*S/(3*P1Q2)-
+ &128*A2*MB**2*S/(3*P2Q2**2)-128*A2**2*MB**3*MT*S/(3*P2Q2**2)+
+ &32*MB**2*MT**2*S/(3*P1Q1**2*P2Q2**2)+32*MB**2*S/(3*P1Q1*P2Q2**2)-
+ &64*A2*MB**3*MT*S/(3*P1Q1*P2Q2**2)-
+ &64*A2*MB**2*MT**2*S/(3*P1Q1*P2Q2**2)-
+ &128*A2*MB**2*P1P2*S/(3*P1Q1*P2Q2**2)+
+ &128*A2**2*MB**2*P1Q1*S/(3*P2Q2**2)-
+ &128*A2*MB**2*P1Q2*S/(3*P1Q1*P2Q2**2)+152*A2*S/(3*P2Q2)-
+ &112*A1*A2*MB**2*S/(3*P2Q2)-128*A1*A2*MB*MT*S/(3*P2Q2)-
+ &152*A2**2*MB*MT*S/(3*P2Q2)-152*A1*A2*P1P2*S/(3*P2Q2)+
+ &16*A2**2*P1P2*S/P2Q2-32*MT**2*S/(3*P1Q1**2*P2Q2)+
+ &64*A1*MB**2*MT**2*S/(3*P1Q1**2*P2Q2)+
+ &64*A1*MB*MT**3*S/(3*P1Q1**2*P2Q2)+
+ &128*A1*MT**2*P1P2*S/(3*P1Q1**2*P2Q2)-12*S/(P1Q1*P2Q2)+
+ &24*A1*MB**2*S/(P1Q1*P2Q2)-64*A1*A2*MB**3*MT*S/(3*P1Q1*P2Q2)
+ V18BIS=V18BIS+24*A2*MT**2*S/(P1Q1*P2Q2)-
+ &128*A1*A2*MB**2*MT**2*S/(3*P1Q1*P2Q2)-
+ &64*A1*A2*MB*MT**3*S/(3*P1Q1*P2Q2)+56*A1*P1P2*S/(3*P1Q1*P2Q2)+
+ &56*A2*P1P2*S/(3*P1Q1*P2Q2)-64*A1*A2*MB**2*P1P2*S/(3*P1Q1*P2Q2)-
+ &128*A1*A2*MB*MT*P1P2*S/(3*P1Q1*P2Q2)-
+ &64*A1*A2*MT**2*P1P2*S/(3*P1Q1*P2Q2)-
+ &256*A1*A2*P1P2**2*S/(3*P1Q1*P2Q2)-160*A2**2*P1Q1*S/(3*P2Q2)+
+ &8*A1*A2*MB**3*MT*S/(3*P1Q2*P2Q2)+
+ &16*A1*A2*MB**2*MT**2*S/(3*P1Q2*P2Q2)+
+ &8*A1*A2*MB*MT**3*S/(3*P1Q2*P2Q2)-8*A1*P1P2*S/(3*P1Q2*P2Q2)-
+ &8*A2*P1P2*S/(3*P1Q2*P2Q2)+8*A1*A2*MB**2*P1P2*S/(3*P1Q2*P2Q2)+
+ &16*A1*A2*MB*MT*P1P2*S/(3*P1Q2*P2Q2)+
+ &8*A1*A2*MT**2*P1P2*S/(3*P1Q2*P2Q2)+
+ &32*A1*A2*P1P2**2*S/(3*P1Q2*P2Q2)+4*P1P2*S/(3*P1Q1*P1Q2*P2Q2)+
+ &8*A1*MB*MT*P1P2*S/(3*P1Q1*P1Q2*P2Q2)-
+ &8*A1*MT**2*P1P2*S/(3*P1Q1*P1Q2*P2Q2)+
+ &16*A1*A2*P1P2*P1Q1*S/(3*P1Q2*P2Q2)-32*A2**2*P1Q2*S/(3*P2Q2)
+ V18BIS=V18BIS+136*A2*P1Q2*S/(3*P1Q1*P2Q2)-
+ &128*A1*A2*MB**2*P1Q2*S/(3*P1Q1*P2Q2)-
+ &128*A1*A2*MB*MT*P1Q2*S/(3*P1Q1*P2Q2)-
+ &256*A1*A2*P1P2*P1Q2*S/(3*P1Q1*P2Q2)-16*A2*MB*MT*S/(3*P2Q1*P2Q2)+
+ &32*A2**2*MB**3*MT*S/(3*P2Q1*P2Q2)-16*A2*P1P2*S/(3*P2Q1*P2Q2)-
+ &4*P1P2*S/(3*P1Q1*P2Q1*P2Q2)+8*A2*MB**2*P1P2*S/(3*P1Q1*P2Q1*P2Q2)-
+ &8*A2*MB*MT*P1P2*S/(3*P1Q1*P2Q1*P2Q2)-4*P1P2*S/(3*P1Q2*P2Q1*P2Q2)+
+ &8*A2*MB**2*P1P2*S/(3*P1Q2*P2Q1*P2Q2)-
+ &8*A2*MB*MT*P1P2*S/(3*P1Q2*P2Q1*P2Q2)+
+ &2*MB**3*MT*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)+
+ &4*MB**2*MT**2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)+
+ &2*MB*MT**3*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &2*MB**2*P1P2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &4*MB*MT*P1P2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &2*MT**2*P1P2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &8*P1P2**2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)+
+ &8*A2*P1P2*P1Q1*S/(3*P1Q2*P2Q1*P2Q2)
+ V18BIS=V18BIS+8*A2*P1P2*P1Q2*S/(3*P1Q1*P2Q1*P2Q2)+
+ &272*A1*A2*P2Q1*S/(3*P2Q2)-
+ &128*A1*MT**2*P2Q1*S/(3*P1Q1**2*P2Q2)-136*A1*P2Q1*S/(3*P1Q1*P2Q2)+
+ &128*A1*A2*MB*MT*P2Q1*S/(3*P1Q1*P2Q2)+
+ &128*A1*A2*MT**2*P2Q1*S/(3*P1Q1*P2Q2)+
+ &256*A1*A2*P1P2*P2Q1*S/(3*P1Q1*P2Q2)-
+ &16*A1*A2*P1P2*P2Q1*S/(3*P1Q2*P2Q2)+
+ &8*A1*P1P2*P2Q1*S/(3*P1Q1*P1Q2*P2Q2)+
+ &256*A1*A2*P1Q2*P2Q1*S/(3*P1Q1*P2Q2)-
+ &128*A12*MT**2*P2Q2*S/(3*P1Q1**2)-160*A12*P2Q2*S/(3*P1Q1)-
+ &32*A12*P2Q2*S/(3*P1Q2)+272*A1*A2*P2Q2*S/(3*P2Q1)-
+ &16*A1*A2*P1P2*P2Q2*S/(3*P1Q1*P2Q1)-
+ &128*A1*MT**2*P2Q2*S/(3*P1Q2**2*P2Q1)-136*A1*P2Q2*S/(3*P1Q2*P2Q1)+
+ &128*A1*A2*MB*MT*P2Q2*S/(3*P1Q2*P2Q1)+
+ &128*A1*A2*MT**2*P2Q2*S/(3*P1Q2*P2Q1)+
+ &256*A1*A2*P1P2*P2Q2*S/(3*P1Q2*P2Q1)+
+ &8*A1*P1P2*P2Q2*S/(3*P1Q1*P1Q2*P2Q1)
+ V18BIS=V18BIS+256*A1*A2*P1Q1*P2Q2*S/(3*P1Q2*P2Q1)+
+ &8*A12*MB*MT*S**2/(3*P1Q1*P1Q2)+16*A12*P1P2*S**2/(3*P1Q1*P1Q2)-
+ &8*A1*A2*P1P2*S**2/(3*P1Q1*P2Q1)+4*A1*P1P2*S**2/(3*P1Q1*P1Q2*P2Q1)-
+ &8*A1*A2*P1P2*S**2/(3*P1Q2*P2Q2)+4*A1*P1P2*S**2/(3*P1Q1*P1Q2*P2Q2)+
+ &8*A2**2*MB*MT*S**2/(3*P2Q1*P2Q2)+16*A2**2*P1P2*S**2/(3*P2Q1*P2Q2)-
+ &4*A2*P1P2*S**2/(3*P1Q1*P2Q1*P2Q2)-
+ &4*A2*P1P2*S**2/(3*P1Q2*P2Q1*P2Q2)+
+ &2*P1P2*S**2/(3*P1Q1*P1Q2*P2Q1*P2Q2)
+C
+
+ A18 = 640*A1/3+640*A2/3+32*A1*A2*MB**2+368*A12*MB*MT+
+ &512*A1*A2*MB*MT/3+
+ &368*A2**2*MB*MT+32*A1*A2*MT**2+496*A12*P1P2/3+
+ &320*A1*A2*P1P2+496*A2**2*P1P2/3-128*A1*MB*MT**3/(3*P1Q1**2)+
+ &128*A1*MT**4/(3*P1Q1**2)+256*A12*MB*MT**5/(3*P1Q1**2)+
+ &256*A1*MT**2*P1P2/(3*P1Q1**2)-256*A12*MT**4*P1P2/(3*P1Q1**2)+
+ &8/(3*P1Q1)+32*A1*MB*MT/P1Q1+56*A2*MB*MT/(3*P1Q1)+
+ &88*A1*MT**2/(3*P1Q1)+72*A2*MT**2/P1Q1-
+ &704*A12*MB*MT**3/(3*P1Q1)+224*A1*A2*MB*MT**3/(3*P1Q1)+
+ &104*A1*P1P2/(3*P1Q1)+48*A2*P1P2/P1Q1-
+ &128*A1*A2*MB*MT*P1P2/(3*P1Q1)+512*A12*MT**2*P1P2/(3*P1Q1)-
+ &448*A1*A2*MT**2*P1P2/(3*P1Q1)-32*A1*A2*P1P2**2/P1Q1-
+ &656*A1*A2*P1Q1/3-224*A2**2*P1Q1-128*A1*MB*MT**3/(3*P1Q2**2)+
+ &128*A1*MT**4/(3*P1Q2**2)+256*A12*MB*MT**5/(3*P1Q2**2)+
+ &256*A1*MT**2*P1P2/(3*P1Q2**2)-256*A12*MT**4*P1P2/(3*P1Q2**2)+
+ &256*A1*MT**2*P1Q1/(3*P1Q2**2)-256*A12*MB*MT**3*P1Q1/(3*P1Q2**2)+
+ &8/(3*P1Q2)+32*A1*MB*MT/P1Q2+56*A2*MB*MT/(3*P1Q2)
+ A18=A18+88*A1*MT**2/(3*P1Q2)+72*A2*MT**2/P1Q2-
+ &704*A12*MB*MT**3/(3*P1Q2)+224*A1*A2*MB*MT**3/(3*P1Q2)+
+ &104*A1*P1P2/(3*P1Q2)+48*A2*P1P2/P1Q2-
+ &128*A1*A2*MB*MT*P1P2/(3*P1Q2)+512*A12*MT**2*P1P2/(3*P1Q2)-
+ &448*A1*A2*MT**2*P1P2/(3*P1Q2)-32*A1*A2*P1P2**2/P1Q2+
+ &32*A1*MB*MT**3/(3*P1Q1*P1Q2)-32*A1*MT**4/(3*P1Q1*P1Q2)-
+ &64*A12*MB*MT**5/(3*P1Q1*P1Q2)+16*P1P2/(3*P1Q1*P1Q2)-
+ &64*A1*MT**2*P1P2/(3*P1Q1*P1Q2)+64*A12*MT**4*P1P2/(3*P1Q1*P1Q2)+
+ &112*A1*P1Q1/P1Q2+272*A2*P1Q1/(3*P1Q2)-
+ &272*A1*A2*MB**2*P1Q1/(3*P1Q2)-208*A12*MB*MT*P1Q1/(3*P1Q2)+
+ &400*A1*A2*MB*MT*P1Q1/(3*P1Q2)-80*A1*A2*MT**2*P1Q1/P1Q2+
+ &96*A12*P1P2*P1Q1/P1Q2-320*A1*A2*P1P2*P1Q1/P1Q2-
+ &544*A1*A2*P1Q1**2/(3*P1Q2)-656*A1*A2*P1Q2/3-224*A2**2*P1Q2+
+ &256*A1*MT**2*P1Q2/(3*P1Q1**2)-256*A12*MB*MT**3*P1Q2/(3*P1Q1**2)+
+ &112*A1*P1Q2/P1Q1+272*A2*P1Q2/(3*P1Q1)-
+ &272*A1*A2*MB**2*P1Q2/(3*P1Q1)-208*A12*MB*MT*P1Q2/(3*P1Q1)+
+ &400*A1*A2*MB*MT*P1Q2/(3*P1Q1)-80*A1*A2*MT**2*P1Q2/P1Q1
+ A18=A18+96*A12*P1P2*P1Q2/P1Q1-320*A1*A2*P1P2*P1Q2/P1Q1-
+ &544*A1*A2*P1Q2**2/(3*P1Q1)+128*A2*MB**4/(3*P2Q1**2)-
+ &128*A2*MB**3*MT/(3*P2Q1**2)+256*A2**2*MB**5*MT/(3*P2Q1**2)+
+ &256*A2*MB**2*P1P2/(3*P2Q1**2)-256*A2**2*MB**4*P1P2/(3*P2Q1**2)+
+ &256*A2*MB**2*P1Q1/(3*P2Q1**2)-256*A2**2*MB**4*P1Q1/(3*P2Q1**2)+
+ &64*MB**3*MT**3/(3*P1Q2**2*P2Q1**2)-
+ &64*MB**2*MT**2*P1P2/(3*P1Q2**2*P2Q1**2)-
+ &64*MB**2*MT**2*P1Q1/(3*P1Q2**2*P2Q1**2)-
+ &64*MB**3*MT/(3*P1Q2*P2Q1**2)-
+ &256*A2*MB**3*MT*P1P2/(3*P1Q2*P2Q1**2)+
+ &256*A2*MB**2*P1P2**2/(3*P1Q2*P2Q1**2)-
+ &256*A2*MB**3*MT*P1Q1/(3*P1Q2*P2Q1**2)+
+ &512*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q1**2)+
+ &256*A2*MB**2*P1Q1**2/(3*P1Q2*P2Q1**2)-
+ &256*A2**2*MB**4*P1Q2/(3*P2Q1**2)-8/(3*P2Q1)-72*A1*MB**2/P2Q1-
+ &88*A2*MB**2/(3*P2Q1)-56*A1*MB*MT/(3*P2Q1)-32*A2*MB*MT/P2Q1-
+ &224*A1*A2*MB**3*MT/(3*P2Q1)+704*A2**2*MB**3*MT/(3*P2Q1)
+ A18=A18-48*A1*P1P2/P2Q1-104*A2*P1P2/(3*P2Q1)+
+ &448*A1*A2*MB**2*P1P2/(3*P2Q1)-512*A2**2*MB**2*P1P2/(3*P2Q1)+
+ &128*A1*A2*MB*MT*P1P2/(3*P2Q1)+32*A1*A2*P1P2**2/P2Q1-
+ &16*P1P2/(3*P1Q1*P2Q1)+32*A1*MB*MT*P1P2/(3*P1Q1*P2Q1)+
+ &32*A2*MB*MT*P1P2/(3*P1Q1*P2Q1)+
+ &64*A1*A2*MB*MT*P1P2**2/(3*P1Q1*P2Q1)-
+ &64*A1*A2*P1P2**3/(3*P1Q1*P2Q1)-256*A2*P1Q1/(3*P2Q1)+
+ &448*A1*A2*MB**2*P1Q1/(3*P2Q1)-368*A2**2*MB**2*P1Q1/(3*P2Q1)-
+ &224*A1*A2*MB*MT*P1Q1/(3*P2Q1)+304*A1*A2*P1P2*P1Q1/(3*P2Q1)+
+ &64*MB*MT**3/(3*P1Q2**2*P2Q1)+
+ &256*A1*MB*MT**3*P1P2/(3*P1Q2**2*P2Q1)-
+ &256*A1*MT**2*P1P2**2/(3*P1Q2**2*P2Q1)+
+ &64*MT**2*P1Q1/(3*P1Q2**2*P2Q1)-
+ &128*A1*MB**2*MT**2*P1Q1/(3*P1Q2**2*P2Q1)+
+ &128*A1*MB*MT**3*P1Q1/(3*P1Q2**2*P2Q1)-
+ &256*A1*MT**2*P1P2*P1Q1/(3*P1Q2**2*P2Q1)-4*MB**2/(3*P1Q2*P2Q1)-
+ &64*MB*MT/(3*P1Q2*P2Q1)+128*A2*MB**3*MT/(3*P1Q2*P2Q1)
+ A18=A18-4*MT**2/(3*P1Q2*P2Q1)-128*A1*MB**2*MT**2/(3*P1Q2*P2Q1)-
+ &128*A2*MB**2*MT**2/(3*P1Q2*P2Q1)+128*A1*MB*MT**3/(3*P1Q2*P2Q1)-
+ &112*A2*MB**2*P1P2/(3*P1Q2*P2Q1)+32*A1*MB*MT*P1P2/(3*P1Q2*P2Q1)+
+ &32*A2*MB*MT*P1P2/(3*P1Q2*P2Q1)-112*A1*MT**2*P1P2/(3*P1Q2*P2Q1)-
+ &48*A1*P1P2**2/(P1Q2*P2Q1)-48*A2*P1P2**2/(P1Q2*P2Q1)-
+ &512*A1*A2*MB*MT*P1P2**2/(3*P1Q2*P2Q1)+
+ &512*A1*A2*P1P2**3/(3*P1Q2*P2Q1)+8*MB*MT*P1P2/(3*P1Q1*P1Q2*P2Q1)-
+ &8*MT**2*P1P2/(3*P1Q1*P1Q2*P2Q1)-
+ &32*A1*MB*MT**3*P1P2/(3*P1Q1*P1Q2*P2Q1)-
+ &16*P1P2**2/(3*P1Q1*P1Q2*P2Q1)+
+ &32*A1*MT**2*P1P2**2/(3*P1Q1*P1Q2*P2Q1)+8*P1Q1/(3*P1Q2*P2Q1)-
+ &160*A1*MB**2*P1Q1/(3*P1Q2*P2Q1)-272*A2*MB**2*P1Q1/(3*P1Q2*P2Q1)-
+ &56*A1*MB*MT*P1Q1/(3*P1Q2*P2Q1)-200*A2*MB*MT*P1Q1/(3*P1Q2*P2Q1)-
+ &48*A1*P1P2*P1Q1/(P1Q2*P2Q1)-256*A2*P1P2*P1Q1/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q1)-
+ &256*A1*A2*MB*MT*P1P2*P1Q1/(P1Q2*P2Q1)+
+ &1024*A1*A2*P1P2**2*P1Q1/(3*P1Q2*P2Q1)
+ A18=A18-272*A2*P1Q1**2/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB**2*P1Q1**2/(3*P1Q2*P2Q1)-
+ &256*A1*A2*MB*MT*P1Q1**2/(3*P1Q2*P2Q1)+
+ &512*A1*A2*P1P2*P1Q1**2/(3*P1Q2*P2Q1)+16*A2*P1Q2/(3*P2Q1)+
+ &64*A1*A2*MB**2*P1Q2/P2Q1+32*A2**2*MB**2*P1Q2/(3*P2Q1)-
+ &112*A1*A2*MB*MT*P1Q2/(3*P2Q1)+368*A1*A2*P1P2*P1Q2/(3*P2Q1)+
+ &32*A2*P1P2*P1Q2/(3*P1Q1*P2Q1)-
+ &32*A1*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q1)+
+ &32*A1*A2*MB*MT*P1P2*P1Q2/(3*P1Q1*P2Q1)-
+ &64*A1*A2*P1P2**2*P1Q2/(3*P1Q1*P2Q1)+224*A12*P2Q1+
+ &656*A1*A2*P2Q1/3-256*A1*MT**2*P2Q1/(3*P1Q1**2)+
+ &256*A12*MT**4*P2Q1/(3*P1Q1**2)-256*A1*P2Q1/(3*P1Q1)-
+ &224*A1*A2*MB*MT*P2Q1/(3*P1Q1)-368*A12*MT**2*P2Q1/(3*P1Q1)+
+ &448*A1*A2*MT**2*P2Q1/(3*P1Q1)+304*A1*A2*P1P2*P2Q1/(3*P1Q1)+
+ &256*A12*MT**4*P2Q1/(3*P1Q2**2)+
+ &256*A12*MT**2*P1Q1*P2Q1/(3*P1Q2**2)+16*A1*P2Q1/(3*P1Q2)-
+ &112*A1*A2*MB*MT*P2Q1/(3*P1Q2)+32*A12*MT**2*P2Q1/(3*P1Q2)
+ A18=A18+64*A1*A2*MT**2*P2Q1/P1Q2+368*A1*A2*P1P2*P2Q1/(3*P1Q2)+
+ &16*A1*MT**2*P2Q1/(3*P1Q1*P1Q2)-64*A12*MT**4*P2Q1/(3*P1Q1*P1Q2)+
+ &640*A12*P1Q1*P2Q1/(3*P1Q2)+544*A1*A2*P1Q1*P2Q1/(3*P1Q2)+
+ &32*A12*P1Q2*P2Q1/P1Q1+944*A1*A2*P1Q2*P2Q1/(3*P1Q1)+
+ &128*A2*MB**4/(3*P2Q2**2)-128*A2*MB**3*MT/(3*P2Q2**2)+
+ &256*A2**2*MB**5*MT/(3*P2Q2**2)+256*A2*MB**2*P1P2/(3*P2Q2**2)-
+ &256*A2**2*MB**4*P1P2/(3*P2Q2**2)+
+ &64*MB**3*MT**3/(3*P1Q1**2*P2Q2**2)-
+ &64*MB**2*MT**2*P1P2/(3*P1Q1**2*P2Q2**2)-
+ &64*MB**3*MT/(3*P1Q1*P2Q2**2)-
+ &256*A2*MB**3*MT*P1P2/(3*P1Q1*P2Q2**2)+
+ &256*A2*MB**2*P1P2**2/(3*P1Q1*P2Q2**2)-
+ &256*A2**2*MB**4*P1Q1/(3*P2Q2**2)+256*A2*MB**2*P1Q2/(3*P2Q2**2)-
+ &256*A2**2*MB**4*P1Q2/(3*P2Q2**2)-
+ &64*MB**2*MT**2*P1Q2/(3*P1Q1**2*P2Q2**2)-
+ &256*A2*MB**3*MT*P1Q2/(3*P1Q1*P2Q2**2)+
+ &512*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q2**2)
+ A18=A18+256*A2*MB**2*P1Q2**2/(3*P1Q1*P2Q2**2)-
+ &256*A2*MB**2*P2Q1/(3*P2Q2**2)+256*A2**2*MB**3*MT*P2Q1/(3*P2Q2**2)+
+ &64*MB**2*MT**2*P2Q1/(3*P1Q1**2*P2Q2**2)+
+ &64*MB**2*P2Q1/(3*P1Q1*P2Q2**2)+
+ &128*A2*MB**3*MT*P2Q1/(3*P1Q1*P2Q2**2)-
+ &128*A2*MB**2*MT**2*P2Q1/(3*P1Q1*P2Q2**2)-
+ &256*A2*MB**2*P1P2*P2Q1/(3*P1Q1*P2Q2**2)+
+ &256*A2**2*MB**2*P1Q1*P2Q1/(3*P2Q2**2)-
+ &256*A2*MB**2*P1Q2*P2Q1/(3*P1Q1*P2Q2**2)-8/(3*P2Q2)-
+ &72*A1*MB**2/P2Q2-88*A2*MB**2/(3*P2Q2)-56*A1*MB*MT/(3*P2Q2)-
+ &32*A2*MB*MT/P2Q2-224*A1*A2*MB**3*MT/(3*P2Q2)+
+ &704*A2**2*MB**3*MT/(3*P2Q2)-48*A1*P1P2/P2Q2-
+ &104*A2*P1P2/(3*P2Q2)+448*A1*A2*MB**2*P1P2/(3*P2Q2)-
+ &512*A2**2*MB**2*P1P2/(3*P2Q2)+128*A1*A2*MB*MT*P1P2/(3*P2Q2)+
+ &32*A1*A2*P1P2**2/P2Q2+64*MB*MT**3/(3*P1Q1**2*P2Q2)+
+ &256*A1*MB*MT**3*P1P2/(3*P1Q1**2*P2Q2)-
+ &256*A1*MT**2*P1P2**2/(3*P1Q1**2*P2Q2)-4*MB**2/(3*P1Q1*P2Q2)
+ A18=A18-64*MB*MT/(3*P1Q1*P2Q2)+128*A2*MB**3*MT/(3*P1Q1*P2Q2)-
+ &4*MT**2/(3*P1Q1*P2Q2)-128*A1*MB**2*MT**2/(3*P1Q1*P2Q2)-
+ &128*A2*MB**2*MT**2/(3*P1Q1*P2Q2)+128*A1*MB*MT**3/(3*P1Q1*P2Q2)-
+ &112*A2*MB**2*P1P2/(3*P1Q1*P2Q2)+32*A1*MB*MT*P1P2/(3*P1Q1*P2Q2)+
+ &32*A2*MB*MT*P1P2/(3*P1Q1*P2Q2)-112*A1*MT**2*P1P2/(3*P1Q1*P2Q2)-
+ &48*A1*P1P2**2/(P1Q1*P2Q2)-48*A2*P1P2**2/(P1Q1*P2Q2)-
+ &512*A1*A2*MB*MT*P1P2**2/(3*P1Q1*P2Q2)+
+ &512*A1*A2*P1P2**3/(3*P1Q1*P2Q2)+16*A2*P1Q1/(3*P2Q2)+
+ &64*A1*A2*MB**2*P1Q1/P2Q2+32*A2**2*MB**2*P1Q1/(3*P2Q2)-
+ &112*A1*A2*MB*MT*P1Q1/(3*P2Q2)+368*A1*A2*P1P2*P1Q1/(3*P2Q2)-
+ &16*P1P2/(3*P1Q2*P2Q2)+32*A1*MB*MT*P1P2/(3*P1Q2*P2Q2)+
+ &32*A2*MB*MT*P1P2/(3*P1Q2*P2Q2)+
+ &64*A1*A2*MB*MT*P1P2**2/(3*P1Q2*P2Q2)-
+ &64*A1*A2*P1P2**3/(3*P1Q2*P2Q2)+8*MB*MT*P1P2/(3*P1Q1*P1Q2*P2Q2)-
+ &8*MT**2*P1P2/(3*P1Q1*P1Q2*P2Q2)-
+ &32*A1*MB*MT**3*P1P2/(3*P1Q1*P1Q2*P2Q2)-
+ &16*P1P2**2/(3*P1Q1*P1Q2*P2Q2)
+ A18=A18+32*A1*MT**2*P1P2**2/(3*P1Q1*P1Q2*P2Q2)+
+ &32*A2*P1P2*P1Q1/(3*P1Q2*P2Q2)-
+ &32*A1*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q2)+
+ &32*A1*A2*MB*MT*P1P2*P1Q1/(3*P1Q2*P2Q2)-
+ &64*A1*A2*P1P2**2*P1Q1/(3*P1Q2*P2Q2)-256*A2*P1Q2/(3*P2Q2)+
+ &448*A1*A2*MB**2*P1Q2/(3*P2Q2)-368*A2**2*MB**2*P1Q2/(3*P2Q2)-
+ &224*A1*A2*MB*MT*P1Q2/(3*P2Q2)+304*A1*A2*P1P2*P1Q2/(3*P2Q2)+
+ &64*MT**2*P1Q2/(3*P1Q1**2*P2Q2)-
+ &128*A1*MB**2*MT**2*P1Q2/(3*P1Q1**2*P2Q2)+
+ &128*A1*MB*MT**3*P1Q2/(3*P1Q1**2*P2Q2)-
+ &256*A1*MT**2*P1P2*P1Q2/(3*P1Q1**2*P2Q2)+8*P1Q2/(3*P1Q1*P2Q2)-
+ &160*A1*MB**2*P1Q2/(3*P1Q1*P2Q2)-272*A2*MB**2*P1Q2/(3*P1Q1*P2Q2)-
+ &56*A1*MB*MT*P1Q2/(3*P1Q1*P2Q2)-200*A2*MB*MT*P1Q2/(3*P1Q1*P2Q2)-
+ &48*A1*P1P2*P1Q2/(P1Q1*P2Q2)-256*A2*P1P2*P1Q2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q2)-
+ &256*A1*A2*MB*MT*P1P2*P1Q2/(P1Q1*P2Q2)+
+ &1024*A1*A2*P1P2**2*P1Q2/(3*P1Q1*P2Q2)
+ A18=A18-272*A2*P1Q2**2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB**2*P1Q2**2/(3*P1Q1*P2Q2)-
+ &256*A1*A2*MB*MT*P1Q2**2/(3*P1Q1*P2Q2)+
+ &512*A1*A2*P1P2*P1Q2**2/(3*P1Q1*P2Q2)-32*A2*MB**4/(3*P2Q1*P2Q2)+
+ &32*A2*MB**3*MT/(3*P2Q1*P2Q2)-64*A2**2*MB**5*MT/(3*P2Q1*P2Q2)+
+ &16*P1P2/(3*P2Q1*P2Q2)-64*A2*MB**2*P1P2/(3*P2Q1*P2Q2)+
+ &64*A2**2*MB**4*P1P2/(3*P2Q1*P2Q2)+8*MB**2*P1P2/(3*P1Q1*P2Q1*P2Q2)-
+ &8*MB*MT*P1P2/(3*P1Q1*P2Q1*P2Q2)+
+ &32*A2*MB**3*MT*P1P2/(3*P1Q1*P2Q1*P2Q2)+
+ &16*P1P2**2/(3*P1Q1*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2**2/(3*P1Q1*P2Q1*P2Q2)-
+ &16*A2*MB**2*P1Q1/(3*P2Q1*P2Q2)+64*A2**2*MB**4*P1Q1/(3*P2Q1*P2Q2)+
+ &8*MB**2*P1P2/(3*P1Q2*P2Q1*P2Q2)-8*MB*MT*P1P2/(3*P1Q2*P2Q1*P2Q2)+
+ &32*A2*MB**3*MT*P1P2/(3*P1Q2*P2Q1*P2Q2)+
+ &16*P1P2**2/(3*P1Q2*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2**2/(3*P1Q2*P2Q1*P2Q2)-
+ &16*MB*MT*P1P2**2/(3*P1Q1*P1Q2*P2Q1*P2Q2)
+ A18=A18+16*P1P2**3/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2*P1Q1/(3*P1Q2*P2Q1*P2Q2)-
+ &16*A2*MB**2*P1Q2/(3*P2Q1*P2Q2)+64*A2**2*MB**4*P1Q2/(3*P2Q1*P2Q2)-
+ &32*A2*MB**2*P1P2*P1Q2/(3*P1Q1*P2Q1*P2Q2)+272*A1*P2Q1/(3*P2Q2)+
+ &112*A2*P2Q1/P2Q2-80*A1*A2*MB**2*P2Q1/P2Q2+
+ &400*A1*A2*MB*MT*P2Q1/(3*P2Q2)-208*A2**2*MB*MT*P2Q1/(3*P2Q2)-
+ &272*A1*A2*MT**2*P2Q1/(3*P2Q2)-320*A1*A2*P1P2*P2Q1/P2Q2+
+ &96*A2**2*P1P2*P2Q1/P2Q2-256*A1*MB*MT**3*P2Q1/(3*P1Q1**2*P2Q2)+
+ &512*A1*MT**2*P1P2*P2Q1/(3*P1Q1**2*P2Q2)-8*P2Q1/(3*P1Q1*P2Q2)+
+ &200*A1*MB*MT*P2Q1/(3*P1Q1*P2Q2)+56*A2*MB*MT*P2Q1/(3*P1Q1*P2Q2)+
+ &272*A1*MT**2*P2Q1/(3*P1Q1*P2Q2)+160*A2*MT**2*P2Q1/(3*P1Q1*P2Q2)+
+ &256*A1*P1P2*P2Q1/(3*P1Q1*P2Q2)+48*A2*P1P2*P2Q1/(P1Q1*P2Q2)+
+ &256*A1*A2*MB*MT*P1P2*P2Q1/(P1Q1*P2Q2)-
+ &256*A1*A2*MT**2*P1P2*P2Q1/(3*P1Q1*P2Q2)-
+ &1024*A1*A2*P1P2**2*P2Q1/(3*P1Q1*P2Q2)-
+ &544*A1*A2*P1Q1*P2Q1/(3*P2Q2)-640*A2**2*P1Q1*P2Q1/(3*P2Q2)-
+ &32*A1*P1P2*P2Q1/(3*P1Q2*P2Q2)
+ A18=A18-32*A1*A2*MB*MT*P1P2*P2Q1/(3*P1Q2*P2Q2)+
+ &32*A1*A2*MT**2*P1P2*P2Q1/(3*P1Q2*P2Q2)+
+ &64*A1*A2*P1P2**2*P2Q1/(3*P1Q2*P2Q2)-
+ &32*A1*MT**2*P1P2*P2Q1/(3*P1Q1*P1Q2*P2Q2)+
+ &64*A1*A2*P1P2*P1Q1*P2Q1/(3*P1Q2*P2Q2)-
+ &944*A1*A2*P1Q2*P2Q1/(3*P2Q2)-32*A2**2*P1Q2*P2Q1/P2Q2+
+ &256*A1*MT**2*P1Q2*P2Q1/(3*P1Q1**2*P2Q2)+
+ &96*A1*P1Q2*P2Q1/(P1Q1*P2Q2)+96*A2*P1Q2*P2Q1/(P1Q1*P2Q2)-
+ &128*A1*A2*MB**2*P1Q2*P2Q1/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MB*MT*P1Q2*P2Q1/(P1Q1*P2Q2)-
+ &128*A1*A2*MT**2*P1Q2*P2Q1/(3*P1Q1*P2Q2)-
+ &512*A1*A2*P1P2*P1Q2*P2Q1/(P1Q1*P2Q2)-
+ &512*A1*A2*P1Q2**2*P2Q1/(3*P1Q1*P2Q2)+544*A1*A2*P2Q1**2/(3*P2Q2)-
+ &256*A1*MT**2*P2Q1**2/(3*P1Q1**2*P2Q2)-
+ &272*A1*P2Q1**2/(3*P1Q1*P2Q2)-
+ &256*A1*A2*MB*MT*P2Q1**2/(3*P1Q1*P2Q2)+
+ &256*A1*A2*MT**2*P2Q1**2/(3*P1Q1*P2Q2)
+ A18=A18+512*A1*A2*P1P2*P2Q1**2/(3*P1Q1*P2Q2)+
+ &512*A1*A2*P1Q2*P2Q1**2/(3*P1Q1*P2Q2)+224*A12*P2Q2+
+ &656*A1*A2*P2Q2/3+256*A12*MT**4*P2Q2/(3*P1Q1**2)+
+ &16*A1*P2Q2/(3*P1Q1)-112*A1*A2*MB*MT*P2Q2/(3*P1Q1)+
+ &32*A12*MT**2*P2Q2/(3*P1Q1)+64*A1*A2*MT**2*P2Q2/P1Q1+
+ &368*A1*A2*P1P2*P2Q2/(3*P1Q1)-256*A1*MT**2*P2Q2/(3*P1Q2**2)+
+ &256*A12*MT**4*P2Q2/(3*P1Q2**2)-256*A1*P2Q2/(3*P1Q2)-
+ &224*A1*A2*MB*MT*P2Q2/(3*P1Q2)-368*A12*MT**2*P2Q2/(3*P1Q2)+
+ &448*A1*A2*MT**2*P2Q2/(3*P1Q2)+304*A1*A2*P1P2*P2Q2/(3*P1Q2)+
+ &16*A1*MT**2*P2Q2/(3*P1Q1*P1Q2)-64*A12*MT**4*P2Q2/(3*P1Q1*P1Q2)+
+ &32*A12*P1Q1*P2Q2/P1Q2+944*A1*A2*P1Q1*P2Q2/(3*P1Q2)+
+ &256*A12*MT**2*P1Q2*P2Q2/(3*P1Q1**2)+
+ &640*A12*P1Q2*P2Q2/(3*P1Q1)+544*A1*A2*P1Q2*P2Q2/(3*P1Q1)-
+ &256*A2*MB**2*P2Q2/(3*P2Q1**2)+256*A2**2*MB**3*MT*P2Q2/(3*P2Q1**2)+
+ &64*MB**2*MT**2*P2Q2/(3*P1Q2**2*P2Q1**2)+
+ &64*MB**2*P2Q2/(3*P1Q2*P2Q1**2)+
+ &128*A2*MB**3*MT*P2Q2/(3*P1Q2*P2Q1**2)
+ A18=A18-128*A2*MB**2*MT**2*P2Q2/(3*P1Q2*P2Q1**2)-
+ &256*A2*MB**2*P1P2*P2Q2/(3*P1Q2*P2Q1**2)-
+ &256*A2*MB**2*P1Q1*P2Q2/(3*P1Q2*P2Q1**2)+
+ &256*A2**2*MB**2*P1Q2*P2Q2/(3*P2Q1**2)+272*A1*P2Q2/(3*P2Q1)+
+ &112*A2*P2Q2/P2Q1-80*A1*A2*MB**2*P2Q2/P2Q1+
+ &400*A1*A2*MB*MT*P2Q2/(3*P2Q1)-208*A2**2*MB*MT*P2Q2/(3*P2Q1)-
+ &272*A1*A2*MT**2*P2Q2/(3*P2Q1)-320*A1*A2*P1P2*P2Q2/P2Q1+
+ &96*A2**2*P1P2*P2Q2/P2Q1-32*A1*P1P2*P2Q2/(3*P1Q1*P2Q1)-
+ &32*A1*A2*MB*MT*P1P2*P2Q2/(3*P1Q1*P2Q1)+
+ &32*A1*A2*MT**2*P1P2*P2Q2/(3*P1Q1*P2Q1)+
+ &64*A1*A2*P1P2**2*P2Q2/(3*P1Q1*P2Q1)-944*A1*A2*P1Q1*P2Q2/(3*P2Q1)-
+ &32*A2**2*P1Q1*P2Q2/P2Q1-256*A1*MB*MT**3*P2Q2/(3*P1Q2**2*P2Q1)+
+ &512*A1*MT**2*P1P2*P2Q2/(3*P1Q2**2*P2Q1)+
+ &256*A1*MT**2*P1Q1*P2Q2/(3*P1Q2**2*P2Q1)-8*P2Q2/(3*P1Q2*P2Q1)+
+ &200*A1*MB*MT*P2Q2/(3*P1Q2*P2Q1)+56*A2*MB*MT*P2Q2/(3*P1Q2*P2Q1)+
+ &272*A1*MT**2*P2Q2/(3*P1Q2*P2Q1)+160*A2*MT**2*P2Q2/(3*P1Q2*P2Q1)+
+ &256*A1*P1P2*P2Q2/(3*P1Q2*P2Q1)+48*A2*P1P2*P2Q2/(P1Q2*P2Q1)
+ A18=A18+256*A1*A2*MB*MT*P1P2*P2Q2/(P1Q2*P2Q1)-
+ &256*A1*A2*MT**2*P1P2*P2Q2/(3*P1Q2*P2Q1)-
+ &1024*A1*A2*P1P2**2*P2Q2/(3*P1Q2*P2Q1)-
+ &32*A1*MT**2*P1P2*P2Q2/(3*P1Q1*P1Q2*P2Q1)+
+ &96*A1*P1Q1*P2Q2/(P1Q2*P2Q1)+96*A2*P1Q1*P2Q2/(P1Q2*P2Q1)-
+ &128*A1*A2*MB**2*P1Q1*P2Q2/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MB*MT*P1Q1*P2Q2/(P1Q2*P2Q1)-
+ &128*A1*A2*MT**2*P1Q1*P2Q2/(3*P1Q2*P2Q1)-
+ &512*A1*A2*P1P2*P1Q1*P2Q2/(P1Q2*P2Q1)-
+ &512*A1*A2*P1Q1**2*P2Q2/(3*P1Q2*P2Q1)-544*A1*A2*P1Q2*P2Q2/(3*P2Q1)-
+ &640*A2**2*P1Q2*P2Q2/(3*P2Q1)+
+ &64*A1*A2*P1P2*P1Q2*P2Q2/(3*P1Q1*P2Q1)+544*A1*A2*P2Q2**2/(3*P2Q1)-
+ &256*A1*MT**2*P2Q2**2/(3*P1Q2**2*P2Q1)-
+ &272*A1*P2Q2**2/(3*P1Q2*P2Q1)-
+ &256*A1*A2*MB*MT*P2Q2**2/(3*P1Q2*P2Q1)+
+ &256*A1*A2*MT**2*P2Q2**2/(3*P1Q2*P2Q1)+
+ &512*A1*A2*P1P2*P2Q2**2/(3*P1Q2*P2Q1)
+ A18=A18+512*A1*A2*P1Q1*P2Q2**2/(3*P1Q2*P2Q1)-
+ &384*A12*MB*MT*P1Q1**2/S**2+
+ &384*A12*P1P2*P1Q1**2/S**2-2688*A12*MB*MT*P1Q1*P1Q2/S**2+
+ &2688*A12*P1P2*P1Q1*P1Q2/S**2-384*A12*MB*MT*P1Q2**2/S**2+
+ &384*A12*P1P2*P1Q2**2/S**2-768*A1*A2*MB*MT*P1Q1*P2Q1/S**2+
+ &768*A1*A2*P1P2*P1Q1*P2Q1/S**2-2688*A1*A2*MB*MT*P1Q2*P2Q1/S**2+
+ &2688*A1*A2*P1P2*P1Q2*P2Q1/S**2-960*A12*P1Q1*P1Q2*P2Q1/S**2-
+ &960*A1*A2*P1Q1*P1Q2*P2Q1/S**2+960*A12*P1Q2**2*P2Q1/S**2+
+ &960*A1*A2*P1Q2**2*P2Q1/S**2-384*A2**2*MB*MT*P2Q1**2/S**2+
+ &384*A2**2*P1P2*P2Q1**2/S**2-960*A1*A2*P1Q2*P2Q1**2/S**2-
+ &960*A2**2*P1Q2*P2Q1**2/S**2-2688*A1*A2*MB*MT*P1Q1*P2Q2/S**2+
+ &2688*A1*A2*P1P2*P1Q1*P2Q2/S**2+960*A12*P1Q1**2*P2Q2/S**2+
+ &960*A1*A2*P1Q1**2*P2Q2/S**2-768*A1*A2*MB*MT*P1Q2*P2Q2/S**2+
+ &768*A1*A2*P1P2*P1Q2*P2Q2/S**2-960*A12*P1Q1*P1Q2*P2Q2/S**2-
+ &960*A1*A2*P1Q1*P1Q2*P2Q2/S**2-2688*A2**2*MB*MT*P2Q1*P2Q2/S**2+
+ &2688*A2**2*P1P2*P2Q1*P2Q2/S**2+960*A1*A2*P1Q1*P2Q1*P2Q2/S**2+
+ &960*A2**2*P1Q1*P2Q1*P2Q2/S**2+960*A1*A2*P1Q2*P2Q1*P2Q2/S**2
+ A18=A18+960*A2**2*P1Q2*P2Q1*P2Q2/S**2-
+ &384*A2**2*MB*MT*P2Q2**2/S**2+
+ &384*A2**2*P1P2*P2Q2**2/S**2-960*A1*A2*P1Q1*P2Q2**2/S**2-
+ &960*A2**2*P1Q1*P2Q2**2/S**2-96*A1*MB*MT/S-96*A2*MB*MT/S+
+ &768*A2**2*MB**3*MT/S+768*A12*MB*MT**3/S-192*A1*P1P2/S-
+ &192*A2*P1P2/S-768*A2**2*MB**2*P1P2/S+2304*A1*A2*MB*MT*P1P2/S-
+ &768*A12*MT**2*P1P2/S-2304*A1*A2*P1P2**2/S+
+ &96*A1*MB*MT**3/(P1Q1*S)+192*A2*MB*MT*P1P2/(P1Q1*S)-
+ &96*A1*MT**2*P1P2/(P1Q1*S)-192*A2*P1P2**2/(P1Q1*S)-192*A1*P1Q1/S-
+ &144*A2*P1Q1/S-384*A1*A2*MB**2*P1Q1/S-480*A2**2*MB**2*P1Q1/S+
+ &480*A12*MB*MT*P1Q1/S-96*A1*A2*MB*MT*P1Q1/S-
+ &864*A12*P1P2*P1Q1/S-672*A1*A2*P1P2*P1Q1/S-96*A1*A2*P1Q1**2/S+
+ &96*A1*MB*MT**3/(P1Q2*S)+192*A2*MB*MT*P1P2/(P1Q2*S)-
+ &96*A1*MT**2*P1P2/(P1Q2*S)-192*A2*P1P2**2/(P1Q2*S)+
+ &48*A1*MB*MT*P1Q1/(P1Q2*S)-96*A2*MB*MT*P1Q1/(P1Q2*S)-
+ &48*A1*MT**2*P1Q1/(P1Q2*S)-192*A1*P1P2*P1Q1/(P1Q2*S)-
+ &192*A2*P1P2*P1Q1/(P1Q2*S)-192*A1*A2*MB*MT*P1P2*P1Q1/(P1Q2*S)
+ A18=A18+192*A1*A2*P1P2**2*P1Q1/(P1Q2*S)-192*A1*P1Q1**2/(P1Q2*S)-
+ &192*A2*P1Q1**2/(P1Q2*S)+192*A1*A2*MB**2*P1Q1**2/(P1Q2*S)+
+ &192*A12*MB*MT*P1Q1**2/(P1Q2*S)-96*A1*A2*MB*MT*P1Q1**2/(P1Q2*S)+
+ &192*A1*A2*P1P2*P1Q1**2/(P1Q2*S)-192*A1*P1Q2/S-144*A2*P1Q2/S-
+ &384*A1*A2*MB**2*P1Q2/S-480*A2**2*MB**2*P1Q2/S+
+ &480*A12*MB*MT*P1Q2/S-96*A1*A2*MB*MT*P1Q2/S-
+ &864*A12*P1P2*P1Q2/S-672*A1*A2*P1P2*P1Q2/S+
+ &48*A1*MB*MT*P1Q2/(P1Q1*S)-96*A2*MB*MT*P1Q2/(P1Q1*S)-
+ &48*A1*MT**2*P1Q2/(P1Q1*S)-192*A1*P1P2*P1Q2/(P1Q1*S)-
+ &192*A2*P1P2*P1Q2/(P1Q1*S)-192*A1*A2*MB*MT*P1P2*P1Q2/(P1Q1*S)+
+ &192*A1*A2*P1P2**2*P1Q2/(P1Q1*S)-576*A1*A2*P1Q1*P1Q2/S-
+ &96*A1*A2*P1Q2**2/S-192*A1*P1Q2**2/(P1Q1*S)-
+ &192*A2*P1Q2**2/(P1Q1*S)+192*A1*A2*MB**2*P1Q2**2/(P1Q1*S)+
+ &192*A12*MB*MT*P1Q2**2/(P1Q1*S)-96*A1*A2*MB*MT*P1Q2**2/(P1Q1*S)+
+ &192*A1*A2*P1P2*P1Q2**2/(P1Q1*S)-96*A2*MB**3*MT/(P2Q1*S)+
+ &96*A2*MB**2*P1P2/(P2Q1*S)-192*A1*MB*MT*P1P2/(P2Q1*S)+
+ &192*A1*P1P2**2/(P2Q1*S)+96*A1*MB**2*P1Q1/(P2Q1*S)
+ A18=A18+192*A2*MB**2*P1Q1/(P2Q1*S)-96*A1*MB*MT*P1Q1/(P2Q1*S)-
+ &192*A1*A2*MB**3*MT*P1Q1/(P2Q1*S)+192*A1*P1P2*P1Q1/(P2Q1*S)+
+ &192*A1*A2*MB**2*P1P2*P1Q1/(P2Q1*S)+
+ &96*A1*A2*MB**2*P1Q1**2/(P2Q1*S)-
+ &192*A2*MB**3*MT*P1Q1/(P1Q2*P2Q1*S)+
+ &192*A2*MB**2*P1P2*P1Q1/(P1Q2*P2Q1*S)-
+ &96*A1*MB*MT*P1P2*P1Q1/(P1Q2*P2Q1*S)+
+ &96*A1*P1P2**2*P1Q1/(P1Q2*P2Q1*S)+
+ &96*A1*MB**2*P1Q1**2/(P1Q2*P2Q1*S)+
+ &192*A2*MB**2*P1Q1**2/(P1Q2*P2Q1*S)-
+ &48*A1*MB*MT*P1Q1**2/(P1Q2*P2Q1*S)+
+ &96*A1*P1P2*P1Q1**2/(P1Q2*P2Q1*S)+96*A1*MB**2*P1Q2/(P2Q1*S)+
+ &48*A2*MB**2*P1Q2/(P2Q1*S)+192*A1*A2*MB**3*MT*P1Q2/(P2Q1*S)-
+ &192*A1*A2*MB**2*P1P2*P1Q2/(P2Q1*S)-
+ &96*A1*A2*MB**2*P1Q2**2/(P2Q1*S)+144*A1*P2Q1/S+192*A2*P2Q1/S+
+ &96*A1*A2*MB*MT*P2Q1/S-480*A2**2*MB*MT*P2Q1/S+
+ &480*A12*MT**2*P2Q1/S+384*A1*A2*MT**2*P2Q1/S
+ A18=A18+672*A1*A2*P1P2*P2Q1/S+864*A2**2*P1P2*P2Q1/S-
+ &96*A2*MB*MT*P2Q1/(P1Q1*S)+192*A1*MT**2*P2Q1/(P1Q1*S)+
+ &96*A2*MT**2*P2Q1/(P1Q1*S)-192*A1*A2*MB*MT**3*P2Q1/(P1Q1*S)+
+ &192*A2*P1P2*P2Q1/(P1Q1*S)+192*A1*A2*MT**2*P1P2*P2Q1/(P1Q1*S)-
+ &192*A12*P1Q1*P2Q1/S-192*A2**2*P1Q1*P2Q1/S+
+ &48*A1*MT**2*P2Q1/(P1Q2*S)+96*A2*MT**2*P2Q1/(P1Q2*S)+
+ &192*A1*A2*MB*MT**3*P2Q1/(P1Q2*S)-
+ &192*A1*A2*MT**2*P1P2*P2Q1/(P1Q2*S)+
+ &96*A1*A2*MB*MT*P1Q1*P2Q1/(P1Q2*S)-
+ &192*A12*MT**2*P1Q1*P2Q1/(P1Q2*S)-
+ &96*A1*A2*MT**2*P1Q1*P2Q1/(P1Q2*S)-
+ &384*A1*A2*P1P2*P1Q1*P2Q1/(P1Q2*S)-384*A12*P1Q1**2*P2Q1/(P1Q2*S)-
+ &384*A1*A2*P1Q1**2*P2Q1/(P1Q2*S)-480*A12*P1Q2*P2Q1/S-
+ &960*A1*A2*P1Q2*P2Q1/S-480*A2**2*P1Q2*P2Q1/S+
+ &144*A1*P1Q2*P2Q1/(P1Q1*S)+96*A2*P1Q2*P2Q1/(P1Q1*S)+
+ &384*A1*A2*MB*MT*P1Q2*P2Q1/(P1Q1*S)-
+ &96*A12*MT**2*P1Q2*P2Q1/(P1Q1*S)
+ A18=A18+96*A1*A2*MT**2*P1Q2*P2Q1/(P1Q1*S)-
+ &576*A1*A2*P1P2*P1Q2*P2Q1/(P1Q1*S)-192*A12*P1Q2**2*P2Q1/(P1Q1*S)-
+ &384*A1*A2*P1Q2**2*P2Q1/(P1Q1*S)-96*A1*A2*P2Q1**2/S-
+ &96*A1*A2*MT**2*P2Q1**2/(P1Q1*S)+96*A1*A2*MT**2*P2Q1**2/(P1Q2*S)+
+ &288*A1*A2*P1Q2*P2Q1**2/(P1Q1*S)-96*A2*MB**3*MT/(P2Q2*S)+
+ &96*A2*MB**2*P1P2/(P2Q2*S)-192*A1*MB*MT*P1P2/(P2Q2*S)+
+ &192*A1*P1P2**2/(P2Q2*S)+96*A1*MB**2*P1Q1/(P2Q2*S)+
+ &48*A2*MB**2*P1Q1/(P2Q2*S)+192*A1*A2*MB**3*MT*P1Q1/(P2Q2*S)-
+ &192*A1*A2*MB**2*P1P2*P1Q1/(P2Q2*S)-
+ &96*A1*A2*MB**2*P1Q1**2/(P2Q2*S)+96*A1*MB**2*P1Q2/(P2Q2*S)+
+ &192*A2*MB**2*P1Q2/(P2Q2*S)-96*A1*MB*MT*P1Q2/(P2Q2*S)-
+ &192*A1*A2*MB**3*MT*P1Q2/(P2Q2*S)+192*A1*P1P2*P1Q2/(P2Q2*S)+
+ &192*A1*A2*MB**2*P1P2*P1Q2/(P2Q2*S)-
+ &192*A2*MB**3*MT*P1Q2/(P1Q1*P2Q2*S)+
+ &192*A2*MB**2*P1P2*P1Q2/(P1Q1*P2Q2*S)-
+ &96*A1*MB*MT*P1P2*P1Q2/(P1Q1*P2Q2*S)+
+ &96*A1*P1P2**2*P1Q2/(P1Q1*P2Q2*S)+96*A1*A2*MB**2*P1Q2**2/(P2Q2*S)
+ A18=A18+96*A1*MB**2*P1Q2**2/(P1Q1*P2Q2*S)+
+ &192*A2*MB**2*P1Q2**2/(P1Q1*P2Q2*S)-
+ &48*A1*MB*MT*P1Q2**2/(P1Q1*P2Q2*S)+
+ &96*A1*P1P2*P1Q2**2/(P1Q1*P2Q2*S)-48*A2*MB**2*P2Q1/(P2Q2*S)-
+ &96*A1*MB*MT*P2Q1/(P2Q2*S)+48*A2*MB*MT*P2Q1/(P2Q2*S)-
+ &192*A1*P1P2*P2Q1/(P2Q2*S)-192*A2*P1P2*P2Q1/(P2Q2*S)-
+ &192*A1*A2*MB*MT*P1P2*P2Q1/(P2Q2*S)+
+ &192*A1*A2*P1P2**2*P2Q1/(P2Q2*S)+
+ &192*A1*MB*MT**3*P2Q1/(P1Q1*P2Q2*S)+
+ &96*A2*MB*MT*P1P2*P2Q1/(P1Q1*P2Q2*S)-
+ &192*A1*MT**2*P1P2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A2*P1P2**2*P2Q1/(P1Q1*P2Q2*S)+
+ &96*A1*A2*MB**2*P1Q1*P2Q1/(P2Q2*S)+
+ &192*A2**2*MB**2*P1Q1*P2Q1/(P2Q2*S)-
+ &96*A1*A2*MB*MT*P1Q1*P2Q1/(P2Q2*S)+
+ &384*A1*A2*P1P2*P1Q1*P2Q1/(P2Q2*S)-96*A1*P1Q2*P2Q1/(P2Q2*S)-
+ &144*A2*P1Q2*P2Q1/(P2Q2*S)-96*A1*A2*MB**2*P1Q2*P2Q1/(P2Q2*S)
+ A18=A18+96*A2**2*MB**2*P1Q2*P2Q1/(P2Q2*S)-
+ &384*A1*A2*MB*MT*P1Q2*P2Q1/(P2Q2*S)+
+ &576*A1*A2*P1P2*P1Q2*P2Q1/(P2Q2*S)-
+ &96*A2*MB**2*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &48*A1*MB*MT*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &48*A2*MB*MT*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A1*MT**2*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A1*P1P2*P1Q2*P2Q1/(P1Q1*P2Q2*S)-
+ &96*A2*P1P2*P1Q2*P2Q1/(P1Q1*P2Q2*S)+
+ &96*A1*A2*P1Q1*P1Q2*P2Q1/(P2Q2*S)+288*A1*A2*P1Q2**2*P2Q1/(P2Q2*S)-
+ &96*A1*P1Q2**2*P2Q1/(P1Q1*P2Q2*S)-96*A2*P1Q2**2*P2Q1/(P1Q1*P2Q2*S)+
+ &192*A1*P2Q1**2/(P2Q2*S)+192*A2*P2Q1**2/(P2Q2*S)+
+ &96*A1*A2*MB*MT*P2Q1**2/(P2Q2*S)-192*A2**2*MB*MT*P2Q1**2/(P2Q2*S)-
+ &192*A1*A2*MT**2*P2Q1**2/(P2Q2*S)-192*A1*A2*P1P2*P2Q1**2/(P2Q2*S)-
+ &48*A2*MB*MT*P2Q1**2/(P1Q1*P2Q2*S)+
+ &192*A1*MT**2*P2Q1**2/(P1Q1*P2Q2*S)+
+ &96*A2*MT**2*P2Q1**2/(P1Q1*P2Q2*S)
+ A18=A18+96*A2*P1P2*P2Q1**2/(P1Q1*P2Q2*S)-
+ &384*A1*A2*P1Q1*P2Q1**2/(P2Q2*S)-
+ &384*A2**2*P1Q1*P2Q1**2/(P2Q2*S)-384*A1*A2*P1Q2*P2Q1**2/(P2Q2*S)-
+ &192*A2**2*P1Q2*P2Q1**2/(P2Q2*S)+96*A1*P1Q2*P2Q1**2/(P1Q1*P2Q2*S)+
+ &96*A2*P1Q2*P2Q1**2/(P1Q1*P2Q2*S)+144*A1*P2Q2/S+192*A2*P2Q2/S+
+ &96*A1*A2*MB*MT*P2Q2/S-480*A2**2*MB*MT*P2Q2/S+
+ &480*A12*MT**2*P2Q2/S+384*A1*A2*MT**2*P2Q2/S+
+ &672*A1*A2*P1P2*P2Q2/S+864*A2**2*P1P2*P2Q2/S+
+ &48*A1*MT**2*P2Q2/(P1Q1*S)+96*A2*MT**2*P2Q2/(P1Q1*S)+
+ &192*A1*A2*MB*MT**3*P2Q2/(P1Q1*S)-
+ &192*A1*A2*MT**2*P1P2*P2Q2/(P1Q1*S)-480*A12*P1Q1*P2Q2/S-
+ &960*A1*A2*P1Q1*P2Q2/S-480*A2**2*P1Q1*P2Q2/S-
+ &96*A2*MB*MT*P2Q2/(P1Q2*S)+192*A1*MT**2*P2Q2/(P1Q2*S)+
+ &96*A2*MT**2*P2Q2/(P1Q2*S)-192*A1*A2*MB*MT**3*P2Q2/(P1Q2*S)+
+ &192*A2*P1P2*P2Q2/(P1Q2*S)+192*A1*A2*MT**2*P1P2*P2Q2/(P1Q2*S)+
+ &144*A1*P1Q1*P2Q2/(P1Q2*S)+96*A2*P1Q1*P2Q2/(P1Q2*S)+
+ &384*A1*A2*MB*MT*P1Q1*P2Q2/(P1Q2*S)
+ A18=A18-96*A12*MT**2*P1Q1*P2Q2/(P1Q2*S)+
+ &96*A1*A2*MT**2*P1Q1*P2Q2/(P1Q2*S)-
+ &576*A1*A2*P1P2*P1Q1*P2Q2/(P1Q2*S)-192*A12*P1Q1**2*P2Q2/(P1Q2*S)-
+ &384*A1*A2*P1Q1**2*P2Q2/(P1Q2*S)-192*A12*P1Q2*P2Q2/S-
+ &192*A2**2*P1Q2*P2Q2/S+96*A1*A2*MB*MT*P1Q2*P2Q2/(P1Q1*S)-
+ &192*A12*MT**2*P1Q2*P2Q2/(P1Q1*S)-
+ &96*A1*A2*MT**2*P1Q2*P2Q2/(P1Q1*S)-
+ &384*A1*A2*P1P2*P1Q2*P2Q2/(P1Q1*S)-384*A12*P1Q2**2*P2Q2/(P1Q1*S)-
+ &384*A1*A2*P1Q2**2*P2Q2/(P1Q1*S)-48*A2*MB**2*P2Q2/(P2Q1*S)-
+ &96*A1*MB*MT*P2Q2/(P2Q1*S)+48*A2*MB*MT*P2Q2/(P2Q1*S)-
+ &192*A1*P1P2*P2Q2/(P2Q1*S)-192*A2*P1P2*P2Q2/(P2Q1*S)-
+ &192*A1*A2*MB*MT*P1P2*P2Q2/(P2Q1*S)+
+ &192*A1*A2*P1P2**2*P2Q2/(P2Q1*S)-96*A1*P1Q1*P2Q2/(P2Q1*S)-
+ &144*A2*P1Q1*P2Q2/(P2Q1*S)-96*A1*A2*MB**2*P1Q1*P2Q2/(P2Q1*S)+
+ &96*A2**2*MB**2*P1Q1*P2Q2/(P2Q1*S)-
+ &384*A1*A2*MB*MT*P1Q1*P2Q2/(P2Q1*S)+
+ &576*A1*A2*P1P2*P1Q1*P2Q2/(P2Q1*S)+288*A1*A2*P1Q1**2*P2Q2/(P2Q1*S)
+ A18=A18+192*A1*MB*MT**3*P2Q2/(P1Q2*P2Q1*S)+
+ &96*A2*MB*MT*P1P2*P2Q2/(P1Q2*P2Q1*S)-
+ &192*A1*MT**2*P1P2*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A2*P1P2**2*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A2*MB**2*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &48*A1*MB*MT*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &48*A2*MB*MT*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A1*MT**2*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A1*P1P2*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A2*P1P2*P1Q1*P2Q2/(P1Q2*P2Q1*S)-
+ &96*A1*P1Q1**2*P2Q2/(P1Q2*P2Q1*S)-96*A2*P1Q1**2*P2Q2/(P1Q2*P2Q1*S)+
+ &96*A1*A2*MB**2*P1Q2*P2Q2/(P2Q1*S)+
+ &192*A2**2*MB**2*P1Q2*P2Q2/(P2Q1*S)-
+ &96*A1*A2*MB*MT*P1Q2*P2Q2/(P2Q1*S)+
+ &384*A1*A2*P1P2*P1Q2*P2Q2/(P2Q1*S)+
+ &96*A1*A2*P1Q1*P1Q2*P2Q2/(P2Q1*S)-576*A1*A2*P2Q1*P2Q2/S+
+ &96*A1*A2*P1Q1*P2Q1*P2Q2/(P1Q2*S)+96*A1*A2*P1Q2*P2Q1*P2Q2/(P1Q1*S)
+ A18=A18-96*A1*A2*P2Q2**2/S+96*A1*A2*MT**2*P2Q2**2/(P1Q1*S)-
+ &96*A1*A2*MT**2*P2Q2**2/(P1Q2*S)+288*A1*A2*P1Q1*P2Q2**2/(P1Q2*S)+
+ &192*A1*P2Q2**2/(P2Q1*S)+192*A2*P2Q2**2/(P2Q1*S)+
+ &96*A1*A2*MB*MT*P2Q2**2/(P2Q1*S)-192*A2**2*MB*MT*P2Q2**2/(P2Q1*S)-
+ &192*A1*A2*MT**2*P2Q2**2/(P2Q1*S)-192*A1*A2*P1P2*P2Q2**2/(P2Q1*S)-
+ &384*A1*A2*P1Q1*P2Q2**2/(P2Q1*S)-192*A2**2*P1Q1*P2Q2**2/(P2Q1*S)-
+ &48*A2*MB*MT*P2Q2**2/(P1Q2*P2Q1*S)+
+ &192*A1*MT**2*P2Q2**2/(P1Q2*P2Q1*S)+
+ &96*A2*MT**2*P2Q2**2/(P1Q2*P2Q1*S)+
+ &96*A2*P1P2*P2Q2**2/(P1Q2*P2Q1*S)+96*A1*P1Q1*P2Q2**2/(P1Q2*P2Q1*S)+
+ &96*A2*P1Q1*P2Q2**2/(P1Q2*P2Q1*S)-384*A1*A2*P1Q2*P2Q2**2/(P2Q1*S)-
+ &384*A2**2*P1Q2*P2Q2**2/(P2Q1*S)+512*A1*A2*S/3-
+ &128*A1*MT**2*S/(3*P1Q1**2)+128*A12*MB*MT**3*S/(3*P1Q1**2)-
+ &152*A1*S/(3*P1Q1)-152*A12*MB*MT*S/(3*P1Q1)-
+ &128*A1*A2*MB*MT*S/(3*P1Q1)+112*A1*A2*MT**2*S/(3*P1Q1)-
+ &16*A12*P1P2*S/P1Q1+152*A1*A2*P1P2*S/(3*P1Q1)-
+ &128*A1*MT**2*S/(3*P1Q2**2)+128*A12*MB*MT**3*S/(3*P1Q2**2)
+ A18=A18-152*A1*S/(3*P1Q2)-152*A12*MB*MT*S/(3*P1Q2)-
+ &128*A1*A2*MB*MT*S/(3*P1Q2)+112*A1*A2*MT**2*S/(3*P1Q2)-
+ &16*A12*P1P2*S/P1Q2+152*A1*A2*P1P2*S/(3*P1Q2)+
+ &16*A1*MB*MT*S/(3*P1Q1*P1Q2)-32*A12*MB*MT**3*S/(3*P1Q1*P1Q2)-
+ &16*A1*P1P2*S/(3*P1Q1*P1Q2)+272*A1*A2*P1Q1*S/(3*P1Q2)+
+ &272*A1*A2*P1Q2*S/(3*P1Q1)-128*A2*MB**2*S/(3*P2Q1**2)+
+ &128*A2**2*MB**3*MT*S/(3*P2Q1**2)+
+ &32*MB**2*MT**2*S/(3*P1Q2**2*P2Q1**2)+32*MB**2*S/(3*P1Q2*P2Q1**2)
+
+ A18BIS=
+ &64*A2*MB**3*MT*S/(3*P1Q2*P2Q1**2)-
+ &64*A2*MB**2*MT**2*S/(3*P1Q2*P2Q1**2)-
+ &128*A2*MB**2*P1P2*S/(3*P1Q2*P2Q1**2)-
+ &128*A2*MB**2*P1Q1*S/(3*P1Q2*P2Q1**2)+
+ &128*A2**2*MB**2*P1Q2*S/(3*P2Q1**2)+152*A2*S/(3*P2Q1)-
+ &112*A1*A2*MB**2*S/(3*P2Q1)+128*A1*A2*MB*MT*S/(3*P2Q1)+
+ &152*A2**2*MB*MT*S/(3*P2Q1)-152*A1*A2*P1P2*S/(3*P2Q1)+
+ &16*A2**2*P1P2*S/P2Q1-8*A1*A2*MB**3*MT*S/(3*P1Q1*P2Q1)+
+ &16*A1*A2*MB**2*MT**2*S/(3*P1Q1*P2Q1)-
+ &8*A1*A2*MB*MT**3*S/(3*P1Q1*P2Q1)-8*A1*P1P2*S/(3*P1Q1*P2Q1)-
+ &8*A2*P1P2*S/(3*P1Q1*P2Q1)+8*A1*A2*MB**2*P1P2*S/(3*P1Q1*P2Q1)-
+ &16*A1*A2*MB*MT*P1P2*S/(3*P1Q1*P2Q1)+
+ &8*A1*A2*MT**2*P1P2*S/(3*P1Q1*P2Q1)+
+ &32*A1*A2*P1P2**2*S/(3*P1Q1*P2Q1)-32*A2**2*P1Q1*S/(3*P2Q1)-
+ &32*MT**2*S/(3*P1Q2**2*P2Q1)+64*A1*MB**2*MT**2*S/(3*P1Q2**2*P2Q1)-
+ &64*A1*MB*MT**3*S/(3*P1Q2**2*P2Q1)
+ A18BIS=A18BIS+128*A1*MT**2*P1P2*S/(3*P1Q2**2*P2Q1)-
+ &12*S/(P1Q2*P2Q1)+
+ &24*A1*MB**2*S/(P1Q2*P2Q1)+64*A1*A2*MB**3*MT*S/(3*P1Q2*P2Q1)+
+ &24*A2*MT**2*S/(P1Q2*P2Q1)-128*A1*A2*MB**2*MT**2*S/(3*P1Q2*P2Q1)+
+ &64*A1*A2*MB*MT**3*S/(3*P1Q2*P2Q1)+56*A1*P1P2*S/(3*P1Q2*P2Q1)+
+ &56*A2*P1P2*S/(3*P1Q2*P2Q1)-64*A1*A2*MB**2*P1P2*S/(3*P1Q2*P2Q1)+
+ &128*A1*A2*MB*MT*P1P2*S/(3*P1Q2*P2Q1)-
+ &64*A1*A2*MT**2*P1P2*S/(3*P1Q2*P2Q1)-
+ &256*A1*A2*P1P2**2*S/(3*P1Q2*P2Q1)+4*P1P2*S/(3*P1Q1*P1Q2*P2Q1)-
+ &8*A1*MB*MT*P1P2*S/(3*P1Q1*P1Q2*P2Q1)-
+ &8*A1*MT**2*P1P2*S/(3*P1Q1*P1Q2*P2Q1)+136*A2*P1Q1*S/(3*P1Q2*P2Q1)-
+ &128*A1*A2*MB**2*P1Q1*S/(3*P1Q2*P2Q1)+
+ &128*A1*A2*MB*MT*P1Q1*S/(3*P1Q2*P2Q1)-
+ &256*A1*A2*P1P2*P1Q1*S/(3*P1Q2*P2Q1)-160*A2**2*P1Q2*S/(3*P2Q1)+
+ &16*A1*A2*P1P2*P1Q2*S/(3*P1Q1*P2Q1)-32*A12*P2Q1*S/(3*P1Q1)-
+ &128*A12*MT**2*P2Q1*S/(3*P1Q2**2)-160*A12*P2Q1*S/(3*P1Q2)-
+ &128*A2*MB**2*S/(3*P2Q2**2)+128*A2**2*MB**3*MT*S/(3*P2Q2**2)
+ A18BIS=A18BIS+32*MB**2*MT**2*S/(3*P1Q1**2*P2Q2**2)+
+ &32*MB**2*S/(3*P1Q1*P2Q2**2)+
+ &64*A2*MB**3*MT*S/(3*P1Q1*P2Q2**2)-
+ &64*A2*MB**2*MT**2*S/(3*P1Q1*P2Q2**2)-
+ &128*A2*MB**2*P1P2*S/(3*P1Q1*P2Q2**2)+
+ &128*A2**2*MB**2*P1Q1*S/(3*P2Q2**2)-
+ &128*A2*MB**2*P1Q2*S/(3*P1Q1*P2Q2**2)+152*A2*S/(3*P2Q2)-
+ &112*A1*A2*MB**2*S/(3*P2Q2)+128*A1*A2*MB*MT*S/(3*P2Q2)+
+ &152*A2**2*MB*MT*S/(3*P2Q2)-152*A1*A2*P1P2*S/(3*P2Q2)+
+ &16*A2**2*P1P2*S/P2Q2-32*MT**2*S/(3*P1Q1**2*P2Q2)+
+ &64*A1*MB**2*MT**2*S/(3*P1Q1**2*P2Q2)-
+ &64*A1*MB*MT**3*S/(3*P1Q1**2*P2Q2)+
+ &128*A1*MT**2*P1P2*S/(3*P1Q1**2*P2Q2)-12*S/(P1Q1*P2Q2)+
+ &24*A1*MB**2*S/(P1Q1*P2Q2)+64*A1*A2*MB**3*MT*S/(3*P1Q1*P2Q2)+
+ &24*A2*MT**2*S/(P1Q1*P2Q2)-128*A1*A2*MB**2*MT**2*S/(3*P1Q1*P2Q2)+
+ &64*A1*A2*MB*MT**3*S/(3*P1Q1*P2Q2)+56*A1*P1P2*S/(3*P1Q1*P2Q2)+
+ &56*A2*P1P2*S/(3*P1Q1*P2Q2)-64*A1*A2*MB**2*P1P2*S/(3*P1Q1*P2Q2)
+ A18BIS=A18BIS+128*A1*A2*MB*MT*P1P2*S/(3*P1Q1*P2Q2)-
+ &64*A1*A2*MT**2*P1P2*S/(3*P1Q1*P2Q2)-
+ &256*A1*A2*P1P2**2*S/(3*P1Q1*P2Q2)-160*A2**2*P1Q1*S/(3*P2Q2)-
+ &8*A1*A2*MB**3*MT*S/(3*P1Q2*P2Q2)+
+ &16*A1*A2*MB**2*MT**2*S/(3*P1Q2*P2Q2)-
+ &8*A1*A2*MB*MT**3*S/(3*P1Q2*P2Q2)-8*A1*P1P2*S/(3*P1Q2*P2Q2)-
+ &8*A2*P1P2*S/(3*P1Q2*P2Q2)+8*A1*A2*MB**2*P1P2*S/(3*P1Q2*P2Q2)-
+ &16*A1*A2*MB*MT*P1P2*S/(3*P1Q2*P2Q2)+
+ &8*A1*A2*MT**2*P1P2*S/(3*P1Q2*P2Q2)+
+ &32*A1*A2*P1P2**2*S/(3*P1Q2*P2Q2)+4*P1P2*S/(3*P1Q1*P1Q2*P2Q2)-
+ &8*A1*MB*MT*P1P2*S/(3*P1Q1*P1Q2*P2Q2)-
+ &8*A1*MT**2*P1P2*S/(3*P1Q1*P1Q2*P2Q2)+
+ &16*A1*A2*P1P2*P1Q1*S/(3*P1Q2*P2Q2)-32*A2**2*P1Q2*S/(3*P2Q2)+
+ &136*A2*P1Q2*S/(3*P1Q1*P2Q2)-128*A1*A2*MB**2*P1Q2*S/(3*P1Q1*P2Q2)+
+ &128*A1*A2*MB*MT*P1Q2*S/(3*P1Q1*P2Q2)-
+ &256*A1*A2*P1P2*P1Q2*S/(3*P1Q1*P2Q2)+16*A2*MB*MT*S/(3*P2Q1*P2Q2)-
+ &32*A2**2*MB**3*MT*S/(3*P2Q1*P2Q2)-16*A2*P1P2*S/(3*P2Q1*P2Q2)
+ A18BIS=A18BIS-4*P1P2*S/(3*P1Q1*P2Q1*P2Q2)+
+ &8*A2*MB**2*P1P2*S/(3*P1Q1*P2Q1*P2Q2)+
+ &8*A2*MB*MT*P1P2*S/(3*P1Q1*P2Q1*P2Q2)-4*P1P2*S/(3*P1Q2*P2Q1*P2Q2)+
+ &8*A2*MB**2*P1P2*S/(3*P1Q2*P2Q1*P2Q2)+
+ &8*A2*MB*MT*P1P2*S/(3*P1Q2*P2Q1*P2Q2)-
+ &2*MB**3*MT*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)+
+ &4*MB**2*MT**2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &2*MB*MT**3*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &2*MB**2*P1P2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)+
+ &4*MB*MT*P1P2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &2*MT**2*P1P2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)-
+ &8*P1P2**2*S/(3*P1Q1*P1Q2*P2Q1*P2Q2)+
+ &8*A2*P1P2*P1Q1*S/(3*P1Q2*P2Q1*P2Q2)+
+ &8*A2*P1P2*P1Q2*S/(3*P1Q1*P2Q1*P2Q2)+272*A1*A2*P2Q1*S/(3*P2Q2)-
+ &128*A1*MT**2*P2Q1*S/(3*P1Q1**2*P2Q2)-136*A1*P2Q1*S/(3*P1Q1*P2Q2)-
+ &128*A1*A2*MB*MT*P2Q1*S/(3*P1Q1*P2Q2)+
+ &128*A1*A2*MT**2*P2Q1*S/(3*P1Q1*P2Q2)
+ A18BIS=A18BIS+256*A1*A2*P1P2*P2Q1*S/(3*P1Q1*P2Q2)-
+ &16*A1*A2*P1P2*P2Q1*S/(3*P1Q2*P2Q2)+
+ &8*A1*P1P2*P2Q1*S/(3*P1Q1*P1Q2*P2Q2)+
+ &256*A1*A2*P1Q2*P2Q1*S/(3*P1Q1*P2Q2)-
+ &128*A12*MT**2*P2Q2*S/(3*P1Q1**2)-160*A12*P2Q2*S/(3*P1Q1)-
+ &32*A12*P2Q2*S/(3*P1Q2)+272*A1*A2*P2Q2*S/(3*P2Q1)-
+ &16*A1*A2*P1P2*P2Q2*S/(3*P1Q1*P2Q1)-
+ &128*A1*MT**2*P2Q2*S/(3*P1Q2**2*P2Q1)-136*A1*P2Q2*S/(3*P1Q2*P2Q1)-
+ &128*A1*A2*MB*MT*P2Q2*S/(3*P1Q2*P2Q1)+
+ &128*A1*A2*MT**2*P2Q2*S/(3*P1Q2*P2Q1)+
+ &256*A1*A2*P1P2*P2Q2*S/(3*P1Q2*P2Q1)+
+ &8*A1*P1P2*P2Q2*S/(3*P1Q1*P1Q2*P2Q1)+
+ &256*A1*A2*P1Q1*P2Q2*S/(3*P1Q2*P2Q1)-
+ &8*A12*MB*MT*S**2/(3*P1Q1*P1Q2)+16*A12*P1P2*S**2/(3*P1Q1*P1Q2)-
+ &8*A1*A2*P1P2*S**2/(3*P1Q1*P2Q1)+4*A1*P1P2*S**2/(3*P1Q1*P1Q2*P2Q1)-
+ &8*A1*A2*P1P2*S**2/(3*P1Q2*P2Q2)+4*A1*P1P2*S**2/(3*P1Q1*P1Q2*P2Q2)-
+ &8*A2**2*MB*MT*S**2/(3*P2Q1*P2Q2)+16*A2**2*P1P2*S**2/(3*P2Q1*P2Q2)
+ A18BIS=A18BIS-4*A2*P1P2*S**2/(3*P1Q1*P2Q1*P2Q2)-
+ &4*A2*P1P2*S**2/(3*P1Q2*P2Q1*P2Q2)+
+ &2*P1P2*S**2/(3*P1Q1*P1Q2*P2Q1*P2Q2)
+C
+ V18=V18+V18BIS
+ A18=A18+A18BIS
+ V910 =-48*A12*MB*MT-48*A2**2*MB*MT-48*A12*P1P2-48*A2**2*P1P2-
+ &384*A12*MB*MT*P1Q1*P1Q2/S**2-384*A12*P1P2*P1Q1*P1Q2/S**2-
+ &384*A1*A2*MB*MT*P1Q2*P2Q1/S**2-384*A1*A2*P1P2*P1Q2*P2Q1/S**2+
+ &192*A12*P1Q1*P1Q2*P2Q1/S**2+192*A1*A2*P1Q1*P1Q2*P2Q1/S**2-
+ &192*A12*P1Q2**2*P2Q1/S**2-192*A1*A2*P1Q2**2*P2Q1/S**2+
+ &192*A1*A2*P1Q2*P2Q1**2/S**2+192*A2**2*P1Q2*P2Q1**2/S**2-
+ &384*A1*A2*MB*MT*P1Q1*P2Q2/S**2-384*A1*A2*P1P2*P1Q1*P2Q2/S**2-
+ &192*A12*P1Q1**2*P2Q2/S**2-192*A1*A2*P1Q1**2*P2Q2/S**2+
+ &192*A12*P1Q1*P1Q2*P2Q2/S**2+192*A1*A2*P1Q1*P1Q2*P2Q2/S**2-
+ &384*A2**2*MB*MT*P2Q1*P2Q2/S**2-384*A2**2*P1P2*P2Q1*P2Q2/S**2-
+ &192*A1*A2*P1Q1*P2Q1*P2Q2/S**2-192*A2**2*P1Q1*P2Q1*P2Q2/S**2-
+ &192*A1*A2*P1Q2*P2Q1*P2Q2/S**2-192*A2**2*P1Q2*P2Q1*P2Q2/S**2+
+ &192*A1*A2*P1Q1*P2Q2**2/S**2+192*A2**2*P1Q1*P2Q2**2/S**2+
+ &96*A12*MB*MT*P1Q1/S-96*A1*A2*MB*MT*P1Q1/S+
+ &96*A12*P1P2*P1Q1/S-96*A1*A2*P1P2*P1Q1/S+96*A12*MB*MT*P1Q2/S-
+ &96*A1*A2*MB*MT*P1Q2/S+96*A12*P1P2*P1Q2/S-96*A1*A2*P1P2*P1Q2/S+
+ &96*A1*A2*MB*MT*P2Q1/S-96*A2**2*MB*MT*P2Q1/S
+ V910=V910+96*A1*A2*P1P2*P2Q1/S-
+ &96*A2**2*P1P2*P2Q1/S+96*A12*P1Q2*P2Q1/S+
+ &192*A1*A2*P1Q2*P2Q1/S+96*A2**2*P1Q2*P2Q1/S+
+ &96*A1*A2*MB*MT*P2Q2/S-96*A2**2*MB*MT*P2Q2/S+
+ &96*A1*A2*P1P2*P2Q2/S-96*A2**2*P1P2*P2Q2/S+96*A12*P1Q1*P2Q2/S+
+ &192*A1*A2*P1Q1*P2Q2/S+96*A2**2*P1Q1*P2Q2/S
+C
+ A910 = 48*A12*MB*MT+48*A2**2*MB*MT-48*A12*P1P2-48*A2**2*P1P2+
+ &384*A12*MB*MT*P1Q1*P1Q2/S**2-384*A12*P1P2*P1Q1*P1Q2/S**2+
+ &384*A1*A2*MB*MT*P1Q2*P2Q1/S**2-384*A1*A2*P1P2*P1Q2*P2Q1/S**2+
+ &192*A12*P1Q1*P1Q2*P2Q1/S**2+192*A1*A2*P1Q1*P1Q2*P2Q1/S**2-
+ &192*A12*P1Q2**2*P2Q1/S**2-192*A1*A2*P1Q2**2*P2Q1/S**2+
+ &192*A1*A2*P1Q2*P2Q1**2/S**2+192*A2**2*P1Q2*P2Q1**2/S**2+
+ &384*A1*A2*MB*MT*P1Q1*P2Q2/S**2-384*A1*A2*P1P2*P1Q1*P2Q2/S**2-
+ &192*A12*P1Q1**2*P2Q2/S**2-192*A1*A2*P1Q1**2*P2Q2/S**2+
+ &192*A12*P1Q1*P1Q2*P2Q2/S**2+192*A1*A2*P1Q1*P1Q2*P2Q2/S**2+
+ &384*A2**2*MB*MT*P2Q1*P2Q2/S**2-384*A2**2*P1P2*P2Q1*P2Q2/S**2-
+ &192*A1*A2*P1Q1*P2Q1*P2Q2/S**2-192*A2**2*P1Q1*P2Q1*P2Q2/S**2-
+ &192*A1*A2*P1Q2*P2Q1*P2Q2/S**2-192*A2**2*P1Q2*P2Q1*P2Q2/S**2+
+ &192*A1*A2*P1Q1*P2Q2**2/S**2+192*A2**2*P1Q1*P2Q2**2/S**2-
+ &96*A12*MB*MT*P1Q1/S+96*A1*A2*MB*MT*P1Q1/S+
+ &96*A12*P1P2*P1Q1/S-96*A1*A2*P1P2*P1Q1/S-96*A12*MB*MT*P1Q2/S+
+ &96*A1*A2*MB*MT*P1Q2/S+96*A12*P1P2*P1Q2/S-96*A1*A2*P1P2*P1Q2/S-
+ &96*A1*A2*MB*MT*P2Q1/S+96*A2**2*MB*MT*P2Q1/S
+ A910=A910+96*A1*A2*P1P2*P2Q1/S-
+ &96*A2**2*P1P2*P2Q1/S+96*A12*P1Q2*P2Q1/S+
+ &192*A1*A2*P1Q2*P2Q1/S+96*A2**2*P1Q2*P2Q1/S-
+ &96*A1*A2*MB*MT*P2Q2/S+96*A2**2*MB*MT*P2Q2/S+
+ &96*A1*A2*P1P2*P2Q2/S-96*A2**2*P1P2*P2Q2/S+96*A12*P1Q1*P2Q2/S+
+ &192*A1*A2*P1Q1*P2Q2/S+96*A2**2*P1Q1*P2Q2/S
+C
+C FINAL RESULT;
+C
+ AMP2= FACT*PS*VTB**2*(V**2 *(V18 +V910)+A**2 *(A18+A910) )
+
+ END
+C---------------------------------------------------------
+C 2) Q QBAR ->TBH^+
+ SUBROUTINE PYTBHQ(Q1,Q2,P1,P2,P3,MT,MB,RMB,MHP,AMP2)
+C
+C AMP2(OUTPUT) =MATRIX ELEMENT (AMPLITUDE**2) FOR Q QBAR->TB H^+
+C (NB SAME STRUCTURE AS FOR PYTBHG ROUTINE ABOVE)
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ DOUBLE PRECISION MW2,MT,MB,MHP,MW
+ DIMENSION Q1(4),Q2(4),P1(4),P2(4),P3(4)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYCTBH/ ALPHA,ALPHAS,SW2,MW2,TANB,VTB,V,A
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYCTBH/
+C !THE RELEVANT INPUT PARAMETERS ABOVE ARE NEEDED FOR CALCULATION
+C BUT ARE NOT DEFINED HERE SO THAT ONE MAY CHOOSE/VARY THEIR VALUES:
+C ACCORDINGLY, WHEN CALLING THESE SUBROUTINES, PLEASE SUPPLY VIA
+C THIS COMMON/PARAM/ YOUR PREFERRED ALPHA, ALPHAS,..AND TANB VALUES
+C
+C THE NORMALIZED V,A COUPLINGS ARE DEFINED BELOW AND USED BOTH
+C IN THIS ROUTINE AND IN THE TOP WIDTH CALCULATION PYTBHB(..).
+C
+ DIMENSION YY(2,2)
+
+ PI = 4*DATAN(1.D0)
+ MW = DSQRT(MW2)
+
+C COLLECTING THE RELEVANT OVERALL FACTORS:
+C 3X3 INITIAL QUARK COLOR AVERAGE, 2X2 QUARK SPIN AVERAGE
+ PS=1.D0/(3.D0*3.D0 *2.D0*2.D0)
+C COUPLING CONSTANT (OVERALL NORMALIZATION)
+ FACT=(4.D0*PI*ALPHA)*(4.D0*PI*ALPHAS)**2/SW2/2.D0
+C NB ALPHA IS E^2/4/PI, BUT BETTER DEFINED IN TERMS OF G_FERMI:
+C ALPHA= DSQRT(2.D0)*GF*SW2*MW**2/PI
+C ALPHAS IS ALPHA_STRONG;
+C SW2 IS SIN(THETA_W)**2.
+C
+C VTB=.998D0
+C VTB IS TOP-BOTTOM CKM MATRIX ELEMENT (APPROXIMATE VALUE HERE)
+C
+ V = ( MT/MW/TANB +RMB/MW*TANB)/2.D0
+ A = (-MT/MW/TANB +RMB/MW*TANB)/2.D0
+C V AND A ARE (NORMALIZED) VECTOR AND AXIAL TBH^+ COUPLINGS
+C
+C REDEFINING P2 INGOING FROM OVERALL MOMENTUM CONSERVATION
+C (BECAUSE P2 INGOING WAS USED IN OUR GRAPH CALCULATION CONVENTIONS)
+ DO 100 KK=1,4
+ P2(KK)=P3(KK)-Q1(KK)-Q2(KK)+P1(KK)
+ 100 CONTINUE
+C DEFINING VARIOUS RELEVANT 4-SCALAR PRODUCTS:
+ S = 2*PYTBHS(Q1,Q2)
+ P1Q1=PYTBHS(Q1,P1)
+ P1Q2=PYTBHS(P1,Q2)
+ P2Q1=PYTBHS(P2,Q1)
+ P2Q2=PYTBHS(P2,Q2)
+ P1P2=PYTBHS(P1,P2)
+C
+C TOP WIDTH CALCULATION
+ CALL PYTBHB(MT,MB,MHP,BR,GAMT)
+C GAMT IS THE TOP WIDTH: T->BH^+ AND/OR T->B W^+
+C THEN DEFINE TOP (RESONANT) PROPAGATOR:
+ A1INV= S -2*P1Q1 -2*P1Q2
+ A1 =A1INV/(A1INV**2+ (GAMT*MT)**2)
+C (I.E. INTRODUCE THE TOP WIDTH IN A1 TO REGULARISE THE POLE)
+C NB A12 = A1*A1 BUT WITH CORRECT WIDTH TREATMENT
+ A12 = 1.D0/(A1INV**2+ (GAMT*MT)**2)
+ A2 =1.D0/(S +2*P2Q1 +2*P2Q2)
+C NOTE A2 IS B PROPAGATOR, DOES NOT NEED A WIDTH
+C NOW COMES THE AMP**2:
+C NB COLOR FACTOR (COMING FORM GRAPHS) ALREADY INCLUDED IN
+C THE EXPRESSIONS BELOW
+ YY(1, 1) = -16*A**2*A2**2*MB*MT+
+ &64*A**2*A2**2*P1Q2*P2Q1**2/S**2+
+ &128*A**2*A2**2*MB*MT*P2Q1*P2Q2/S**2-
+ &128*A**2*A2**2*P1P2*P2Q1*P2Q2/S**2-
+ &64*A**2*A2**2*P1Q1*P2Q1*P2Q2/S**2-
+ &64*A**2*A2**2*P1Q2*P2Q1*P2Q2/S**2+
+ &64*A**2*A2**2*P1Q1*P2Q2**2/S**2-
+ &32*A**2*A2**2*MB**3*MT/S+32*A**2*A2**2*MB**2*P1P2/S+
+ &32*A**2*A2**2*MB**2*P1Q1/S+32*A**2*A2**2*MB**2*P1Q2/S-
+ &32*A**2*A2**2*P1P2*P2Q1/S-32*A**2*A2**2*P1Q1*P2Q1/S-
+ &32*A**2*A2**2*P1P2*P2Q2/S-32*A**2*A2**2*P1Q2*P2Q2/S+
+ &16*A2**2*MB*MT*V**2+64*A2**2*P1Q2*P2Q1**2*V**2/S**2-
+ &128*A2**2*MB*MT*P2Q1*P2Q2*V**2/S**2-
+ &128*A2**2*P1P2*P2Q1*P2Q2*V**2/S**2-
+ &64*A2**2*P1Q1*P2Q1*P2Q2*V**2/S**2-
+ &64*A2**2*P1Q2*P2Q1*P2Q2*V**2/S**2+
+ &64*A2**2*P1Q1*P2Q2**2*V**2/S**2
+ YY(1, 1)=YY(1, 1)+32*A2**2*MB**3*MT*V**2/S+
+ &32*A2**2*MB**2*P1P2*V**2/S+
+ &32*A2**2*MB**2*P1Q1*V**2/S+32*A2**2*MB**2*P1Q2*V**2/S-
+ &32*A2**2*P1P2*P2Q1*V**2/S-32*A2**2*P1Q1*P2Q1*V**2/S-
+ &32*A2**2*P1P2*P2Q2*V**2/S-32*A2**2*P1Q2*P2Q2*V**2/S
+ YY(1, 1)=2*YY(1, 1)
+
+ YY(1, 2) = -32*A**2*A1*A2*MB*MT+
+ &128*A**2*A1*A2*MB*MT*P1Q2*P2Q1/S**2-
+ &128*A**2*A1*A2*P1P2*P1Q2*P2Q1/S**2+
+ &64*A**2*A1*A2*P1Q1*P1Q2*P2Q1/S**2-
+ &64*A**2*A1*A2*P1Q2**2*P2Q1/S**2+
+ &64*A**2*A1*A2*P1Q2*P2Q1**2/S**2+
+ &128*A**2*A1*A2*MB*MT*P1Q1*P2Q2/S**2-
+ &128*A**2*A1*A2*P1P2*P1Q1*P2Q2/S**2-
+ &64*A**2*A1*A2*P1Q1**2*P2Q2/S**2+
+ &64*A**2*A1*A2*P1Q1*P1Q2*P2Q2/S**2-
+ &64*A**2*A1*A2*P1Q1*P2Q1*P2Q2/S**2-
+ &64*A**2*A1*A2*P1Q2*P2Q1*P2Q2/S**2+
+ &64*A**2*A1*A2*P1Q1*P2Q2**2/S**2-
+ &64*A**2*A1*A2*MB*MT*P1P2/S+
+ &64*A**2*A1*A2*P1P2**2/S+32*A**2*A1*A2*MB**2*P1Q1/S+
+ &32*A**2*A1*A2*P1P2*P1Q1/S+32*A**2*A1*A2*MB**2*P1Q2/S+
+ &32*A**2*A1*A2*P1P2*P1Q2/S-32*A**2*A1*A2*MT**2*P2Q1/S
+ YY(1, 2)=YY(1, 2)-32*A**2*A1*A2*P1P2*P2Q1/S-
+ &64*A**2*A1*A2*P1Q1*P2Q1/S-
+ &32*A**2*A1*A2*MT**2*P2Q2/S-32*A**2*A1*A2*P1P2*P2Q2/S-
+ &64*A**2*A1*A2*P1Q2*P2Q2/S+32*A1*A2*MB*MT*V**2-
+ &128*A1*A2*MB*MT*P1Q2*P2Q1*V**2/S**2 -
+ &128*A1*A2*P1P2*P1Q2*P2Q1*V**2/S**2+
+ &64*A1*A2*P1Q1*P1Q2*P2Q1*V**2/S**2-
+ &64*A1*A2*P1Q2**2*P2Q1*V**2/S**2+
+ &64*A1*A2*P1Q2*P2Q1**2*V**2/S**2-
+ &128*A1*A2*MB*MT*P1Q1*P2Q2*V**2/S**2-
+ &128*A1*A2*P1P2*P1Q1*P2Q2*V**2/S**2-
+ &64*A1*A2*P1Q1**2*P2Q2*V**2/S**2+
+ &64*A1*A2*P1Q1*P1Q2*P2Q2*V**2/S**2-
+ &64*A1*A2*P1Q1*P2Q1*P2Q2*V**2/S**2-
+ &64*A1*A2*P1Q2*P2Q1*P2Q2*V**2/S**2+
+ &64*A1*A2*P1Q1*P2Q2**2*V**2/S**2+
+ &64*A1*A2*MB*MT*P1P2*V**2/S+64*A1*A2*P1P2**2*V**2/S
+ YY(1, 2)=YY(1, 2)+32*A1*A2*MB**2*P1Q1*V**2/S+
+ &32*A1*A2*P1P2*P1Q1*V**2/S+
+ &32*A1*A2*MB**2*P1Q2*V**2/S+32*A1*A2*P1P2*P1Q2*V**2/S-
+ &32*A1*A2*MT**2*P2Q1*V**2/S-32*A1*A2*P1P2*P2Q1*V**2/S-
+ &64*A1*A2*P1Q1*P2Q1*V**2/S-32*A1*A2*MT**2*P2Q2*V**2/S-
+ &32*A1*A2*P1P2*P2Q2*V**2/S-64*A1*A2*P1Q2*P2Q2*V**2/S
+
+
+ YY(2, 2) =-16*A**2*A12*MB*MT+
+ &128*A**2*A12*MB*MT*P1Q1*P1Q2/S**2-
+ &128*A**2*A12*P1P2*P1Q1*P1Q2/S**2+
+ &64*A**2*A12*P1Q1*P1Q2*P2Q1/S**2-
+ &64*A**2*A12*P1Q2**2*P2Q1/S**2-64*A**2*A12*P1Q1**2*P2Q2/S**2+
+ &64*A**2*A12*P1Q1*P1Q2*P2Q2/S**2-32*A**2*A12*MB*MT**3/S+
+ &32*A**2*A12*MT**2*P1P2/S+32*A**2*A12*P1P2*P1Q1/S+
+ &32*A**2*A12*P1P2*P1Q2/S-32*A**2*A12*MT**2*P2Q1/S-
+ &32*A**2*A12*P1Q1*P2Q1/S-32*A**2*A12*MT**2*P2Q2/S-
+ &32*A**2*A12*P1Q2*P2Q2/S+16*A12*MB*MT*V**2-
+ &128*A12*MB*MT*P1Q1*P1Q2*V**2/S**2-
+ &128*A12*P1P2*P1Q1*P1Q2*V**2/S**2+
+ &64*A12*P1Q1*P1Q2*P2Q1*V**2/S**2-
+ &64*A12*P1Q2**2*P2Q1*V**2/S**2-64*A12*P1Q1**2*P2Q2*V**2/S**2+
+ &64*A12*P1Q1*P1Q2*P2Q2*V**2/S**2+32*A12*MB*MT**3*V**2/S+
+ &32*A12*MT**2*P1P2*V**2/S+32*A12*P1P2*P1Q1*V**2/S+
+ &32*A12*P1P2*P1Q2*V**2/S-32*A12*MT**2*P2Q1*V**2/S
+ YY(2, 2)=YY(2, 2)-32*A12*P1Q1*P2Q1*V**2/S-
+ &32*A12*MT**2*P2Q2*V**2/S-
+ &32*A12*P1Q2*P2Q2*V**2/S
+ YY(2, 2)=2*YY(2, 2)
+
+ RES=YY(1,1)+2*YY(1,2)+YY(2,2)
+ AMP2= FACT*PS*VTB**2*RES
+
+ END
+C=====================================================================
+C ************* FUNCTION SCALAR PRODUCTS *************************
+ DOUBLE PRECISION FUNCTION PYTBHS(A,B)
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ DIMENSION A(4),B(4)
+ DUM=A(4)*B(4)
+ DO 100 ID=1,3
+ DUM=DUM-A(ID)*B(ID)
+ 100 CONTINUE
+ PYTBHS=DUM
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMSIN
+C...Initializes supersymmetry: finds sparticle masses and
+C...branching ratios and stores this information.
+C...AUTHOR: STEPHEN MRENNA
+C...Author: P. Skands (SLHA + RPV + ISASUSY Interface, NMSSM)
+
+ SUBROUTINE PYMSIN
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYHTRI/HHH(7)
+ COMMON/PYQNUM/NQNUM,NQDUM,KQNUM(500,0:9)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYDAT4/,/PYPARS/,/PYINT4/,
+ &/PYMSSM/,/PYMSRV/,/PYSSMT/
+
+C...Local variables.
+ DOUBLE PRECISION ALFA,BETA
+ DOUBLE PRECISION TANB,AL,BE,COSA,COSB,SINA,SINB,XW
+ INTEGER I,J,J1,I1,K1
+ INTEGER KC,LKNT,IDLAM(400,3)
+ DOUBLE PRECISION XLAM(0:400)
+ DOUBLE PRECISION WDTP(0:400),WDTE(0:400,0:5)
+ DOUBLE PRECISION XARG,COS2B,XMW2,XMZ2
+ DOUBLE PRECISION DELM,XMDIF
+ DOUBLE PRECISION DX,DY,DS,DMU2,DMA2,DQ2,DU2,DD2,DL2,DE2,DHU2,DHD2
+ DOUBLE PRECISION ARG,SGNMU,R
+ INTEGER IMSSM
+ INTEGER IRPRTY
+ INTEGER KFSUSY(50),MWIDSU(36),MDCYSU(36)
+ SAVE MWIDSU,MDCYSU
+ DATA KFSUSY/
+ &1000001,2000001,1000002,2000002,1000003,2000003,
+ &1000004,2000004,1000005,2000005,1000006,2000006,
+ &1000011,2000011,1000012,2000012,1000013,2000013,
+ &1000014,2000014,1000015,2000015,1000016,2000016,
+ &1000021,1000022,1000023,1000025,1000035,1000024,
+ &1000037,1000039, 25, 35, 36, 37,
+ & 6, 24, 45, 46,1000045, 9*0/
+ DATA INIT/0/
+
+C...Automatically read QNUMBERS, MASS, and DECAY tables
+ IF (IMSS(21).NE.0.OR.MSTP(161).NE.0) THEN
+ NQNUM=0
+ CALL PYSLHA(0,0,IFAIL)
+ CALL PYSLHA(5,0,IFAIL)
+ ENDIF
+ IF (IMSS(22).NE.0.OR.MSTP(161).NE.0) CALL PYSLHA(2,0,IFAIL)
+
+C...Do nothing further if SUSY not requested
+ IMSSM=IMSS(1)
+ IF(IMSSM.EQ.0) RETURN
+
+C...Save copy of MWID(KC) and MDCY(KC,1) values before
+C...they are set to zero for the LSP.
+ IF(INIT.EQ.0) THEN
+ INIT=1
+ DO 100 I=1,36
+ KF=KFSUSY(I)
+ KC=PYCOMP(KF)
+ MWIDSU(I)=MWID(KC)
+ MDCYSU(I)=MDCY(KC,1)
+ 100 CONTINUE
+ ENDIF
+
+C...Restore MWID(KC) and MDCY(KC,1) values previously zeroed for LSP.
+ DO 110 I=1,36
+ KF=KFSUSY(I)
+ KC=PYCOMP(KF)
+ IF(MDCY(KC,1).EQ.0.AND.MDCYSU(I).NE.0) THEN
+ MWID(KC)=MWIDSU(I)
+ MDCY(KC,1)=MDCYSU(I)
+ ENDIF
+ 110 CONTINUE
+
+C...First part of routine: set masses and couplings.
+
+C...Reset mixing values in sfermion sector to pure left/right.
+ DO 120 I=1,16
+ SFMIX(I,1)=1D0
+ SFMIX(I,4)=1D0
+ SFMIX(I,2)=0D0
+ SFMIX(I,3)=0D0
+ 120 CONTINUE
+
+C...Add NMSSM states if NMSSM switched on, and change old names.
+ IF (IMSS(13).NE.0.AND.PYCOMP(1000045).EQ.0) THEN
+C... Switch on NMSSM
+ WRITE(MSTU(11),*) '(PYMSIN:) switching on NMSSM'
+
+ KFN=25
+ KCN=KFN
+ CHAF(KCN,1)='h_10'
+ CHAF(KCN,2)=' '
+
+ KFN=35
+ KCN=KFN
+ CHAF(KCN,1)='h_20'
+ CHAF(KCN,2)=' '
+
+ KFN=45
+ KCN=KFN
+ CHAF(KCN,1)='h_30'
+ CHAF(KCN,2)=' '
+
+ KFN=36
+ KCN=KFN
+ CHAF(KCN,1)='A_10'
+ CHAF(KCN,2)=' '
+
+ KFN=46
+ KCN=KFN
+ CHAF(KCN,1)='A_20'
+ CHAF(KCN,2)=' '
+
+ KFN=1000045
+ KCN=PYCOMP(KFN)
+ IF (KCN.EQ.0) THEN
+ DO 123 KCT=100,MSTU(6)
+ IF(KCHG(KCT,4).GT.100) KCN=KCT
+ 123 CONTINUE
+ KCN=KCN+1
+ KCHG(KCN,4)=KFN
+ MSTU(20)=0
+ ENDIF
+C... Set stable for now
+ PMAS(KCN,2)=1D-6
+ MWID(KCN)=0
+ MDCY(KCN,1)=0
+ MDCY(KCN,2)=0
+ MDCY(KCN,3)=0
+ CHAF(KCN,1)='~chi_50'
+ CHAF(KCN,2)=' '
+ ENDIF
+
+C...Read spectrum from SLHA file.
+ IF (IMSSM.EQ.11) THEN
+ CALL PYSLHA(1,0,IFAIL)
+ ENDIF
+
+C...Common couplings.
+ TANB=RMSS(5)
+ BETA=ATAN(TANB)
+ COSB=COS(BETA)
+ SINB=TANB*COSB
+ COS2B=COS(2D0*BETA)
+ ALFA=RMSS(18)
+ XMW2=PMAS(24,1)**2
+ XMZ2=PMAS(23,1)**2
+ XW=PARU(102)
+
+C...Define sparticle masses for a general MSSM simulation.
+ IF(IMSSM.EQ.1) THEN
+ IF(IMSS(9).EQ.0) RMSS(22)=RMSS(9)
+ DO 130 I=1,5,2
+ KC=PYCOMP(KSUSY1+I)
+ PMAS(KC,1)=SQRT(RMSS(8)**2-(2D0*XMW2+XMZ2)*COS2B/6D0)
+ KC=PYCOMP(KSUSY2+I)
+ PMAS(KC,1)=SQRT(RMSS(9)**2+(XMW2-XMZ2)*COS2B/3D0)
+ KC=PYCOMP(KSUSY1+I+1)
+ PMAS(KC,1)=SQRT(RMSS(8)**2+(4D0*XMW2-XMZ2)*COS2B/6D0)
+ KC=PYCOMP(KSUSY2+I+1)
+ PMAS(KC,1)=SQRT(RMSS(22)**2-(XMW2-XMZ2)*COS2B*2D0/3D0)
+ 130 CONTINUE
+ XARG=RMSS(6)**2-PMAS(24,1)**2*ABS(COS(2D0*BETA))
+ IF(XARG.LT.0D0) THEN
+ WRITE(MSTU(11),*) ' SNEUTRINO MASS IS NEGATIVE'//
+ & ' FROM THE SUM RULE. '
+ WRITE(MSTU(11),*) ' TRY A SMALLER VALUE OF TAN(BETA). '
+ RETURN
+ ELSE
+ XARG=SQRT(XARG)
+ ENDIF
+ DO 140 I=11,15,2
+ PMAS(PYCOMP(KSUSY1+I),1)=RMSS(6)
+ PMAS(PYCOMP(KSUSY2+I),1)=RMSS(7)
+ PMAS(PYCOMP(KSUSY1+I+1),1)=XARG
+ PMAS(PYCOMP(KSUSY2+I+1),1)=9999D0
+ 140 CONTINUE
+ IF(IMSS(8).EQ.1) THEN
+ RMSS(13)=RMSS(6)
+ RMSS(14)=RMSS(7)
+ ENDIF
+
+C...Alternatively derive masses from SUGRA relations.
+ ELSEIF(IMSSM.EQ.2) THEN
+ RMSS(36)=RMSS(16)
+ CALL PYAPPS
+C...Or use ISASUSY
+ ELSEIF(IMSSM.EQ.12.OR.IMSSM.EQ.13) THEN
+ RMSS(36)=RMSS(16)
+ CALL PYSUGI
+ ALFA=RMSS(18)
+ GOTO 170
+ ELSE
+ GOTO 170
+ ENDIF
+
+C...Add in extra D-term contributions.
+ IF(IMSS(7).EQ.1) THEN
+ R=0.43D0
+ DX=RMSS(23)
+ DY=RMSS(24)
+ DS=RMSS(25)
+ WRITE(MSTU(11),*) 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC'
+ WRITE(MSTU(11),*) 'C NEW DTERMS ADDED TO SCALAR MASSES '
+ WRITE(MSTU(11),*) 'C IN A U(B-L) THEORY '
+ WRITE(MSTU(11),*) 'C DX = ',DX
+ WRITE(MSTU(11),*) 'C DY = ',DY
+ WRITE(MSTU(11),*) 'C DS = ',DS
+ WRITE(MSTU(11),*) 'C '
+ DY=R*DY-4D0/33D0*(1D0-R)*DX+(1D0-R)/33D0*DS
+ WRITE(MSTU(11),*) 'C DY AT THE WEAK SCALE = ',DY
+ WRITE(MSTU(11),*) 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC'
+ DQ2=DY/6D0-DX/3D0-DS/3D0
+ DU2=-2D0*DY/3D0-DX/3D0-DS/3D0
+ DD2=DY/3D0+DX-2D0*DS/3D0
+ DL2=-DY/2D0+DX-2D0*DS/3D0
+ DE2=DY-DX/3D0-DS/3D0
+ DHU2=DY/2D0+2D0*DX/3D0+2D0*DS/3D0
+ DHD2=-DY/2D0-2D0*DX/3D0+DS
+ DMU2=(-DY/2D0-2D0/3D0*DX+(COSB**2-2D0*SINB**2/3D0)*DS)
+ & /ABS(COS2B)
+ DMA2 = 2D0*DMU2+DHU2+DHD2
+ DO 150 I=1,5,2
+ KC=PYCOMP(KSUSY1+I)
+ PMAS(KC,1)=SQRT(PMAS(KC,1)**2+DQ2)
+ KC=PYCOMP(KSUSY2+I)
+ PMAS(KC,1)=SQRT(PMAS(KC,1)**2+DD2)
+ KC=PYCOMP(KSUSY1+I+1)
+ PMAS(KC,1)=SQRT(PMAS(KC,1)**2+DQ2)
+ KC=PYCOMP(KSUSY2+I+1)
+ PMAS(KC,1)=SQRT(PMAS(KC,1)**2+DU2)
+ 150 CONTINUE
+ DO 160 I=11,15,2
+ KC=PYCOMP(KSUSY1+I)
+ PMAS(KC,1)=SQRT(PMAS(KC,1)**2+DL2)
+ KC=PYCOMP(KSUSY2+I)
+ PMAS(KC,1)=SQRT(PMAS(KC,1)**2+DE2)
+ KC=PYCOMP(KSUSY1+I+1)
+ PMAS(KC,1)=SQRT(PMAS(KC,1)**2+DL2)
+ 160 CONTINUE
+ IF(RMSS(4)**2+DMU2.LT.0D0) THEN
+ WRITE(MSTU(11),*) ' MU2 DRIVEN NEGATIVE '
+ CALL PYSTOP(104)
+ ENDIF
+ SGNMU=SIGN(1D0,RMSS(4))
+ RMSS(4)=SGNMU*SQRT(RMSS(4)**2+DMU2)
+ ARG=RMSS(10)**2*SIGN(1D0,RMSS(10))+DQ2
+ RMSS(10)=SIGN(SQRT(ABS(ARG)),ARG)
+ ARG=RMSS(11)**2*SIGN(1D0,RMSS(11))+DD2
+ RMSS(11)=SIGN(SQRT(ABS(ARG)),ARG)
+ ARG=RMSS(12)**2*SIGN(1D0,RMSS(12))+DU2
+ RMSS(12)=SIGN(SQRT(ABS(ARG)),ARG)
+ ARG=RMSS(13)**2*SIGN(1D0,RMSS(13))+DL2
+ RMSS(13)=SIGN(SQRT(ABS(ARG)),ARG)
+ ARG=RMSS(14)**2*SIGN(1D0,RMSS(14))+DE2
+ RMSS(14)=SIGN(SQRT(ABS(ARG)),ARG)
+ IF( RMSS(19)**2 + DMA2 .LE. 50D0 ) THEN
+ WRITE(MSTU(11),*) ' MA DRIVEN TOO LOW '
+ CALL PYSTOP(104)
+ ENDIF
+ RMSS(19)=SQRT(RMSS(19)**2+DMA2)
+ RMSS(6)=SQRT(RMSS(6)**2+DL2)
+ RMSS(7)=SQRT(RMSS(7)**2+DE2)
+ WRITE(MSTU(11),*) ' MTL = ',RMSS(10)
+ WRITE(MSTU(11),*) ' MBR = ',RMSS(11)
+ WRITE(MSTU(11),*) ' MTR = ',RMSS(12)
+ WRITE(MSTU(11),*) ' SEL = ',RMSS(6),RMSS(13)
+ WRITE(MSTU(11),*) ' SER = ',RMSS(7),RMSS(14)
+ ENDIF
+
+C...Fix the third generation sfermions.
+ CALL PYTHRG
+
+C...Fix the neutralino--chargino--gluino sector.
+ CALL PYINOM
+
+C...Fix the Higgs sector.
+ CALL PYHGGM(ALFA)
+
+C...Choose the Gunion-Haber convention.
+ ALFA=-ALFA
+ RMSS(18)=ALFA
+
+C...Print information on mass parameters.
+ IF(IMSSM.EQ.2.AND.MSTP(122).GT.0) THEN
+ WRITE(MSTU(11),*) 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC'
+ WRITE(MSTU(11),*) ' USING APPROXIMATE SUGRA RELATIONS '
+ WRITE(MSTU(11),*) ' M0 = ',RMSS(8)
+ WRITE(MSTU(11),*) ' M1/2=',RMSS(1)
+ WRITE(MSTU(11),*) ' TANB=',RMSS(5)
+ WRITE(MSTU(11),*) ' MU = ',RMSS(4)
+ WRITE(MSTU(11),*) ' AT = ',RMSS(16)
+ WRITE(MSTU(11),*) ' MA = ',RMSS(19)
+ WRITE(MSTU(11),*) ' MTOP=',PMAS(6,1)
+ WRITE(MSTU(11),*) 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC'
+ ENDIF
+ IF(IMSS(20).EQ.1) THEN
+ WRITE(MSTU(11),*) 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC'
+ WRITE(MSTU(11),*) ' DEBUG MODE '
+ WRITE(MSTU(11),*) ' UMIX = ',UMIX(1,1),UMIX(1,2),
+ & UMIX(2,1),UMIX(2,2)
+ WRITE(MSTU(11),*) ' UMIXI = ',UMIXI(1,1),UMIXI(1,2),
+ & UMIXI(2,1),UMIXI(2,2)
+ WRITE(MSTU(11),*) ' VMIX = ',VMIX(1,1),VMIX(1,2),
+ & VMIX(2,1),VMIX(2,2)
+ WRITE(MSTU(11),*) ' VMIXI = ',VMIXI(1,1),VMIXI(1,2),
+ & VMIXI(2,1),VMIXI(2,2)
+ WRITE(MSTU(11),*) ' ZMIX = ',(ZMIX(1,I),I=1,4)
+ WRITE(MSTU(11),*) ' ZMIXI = ',(ZMIXI(1,I),I=1,4)
+ WRITE(MSTU(11),*) ' ZMIX = ',(ZMIX(2,I),I=1,4)
+ WRITE(MSTU(11),*) ' ZMIXI = ',(ZMIXI(2,I),I=1,4)
+ WRITE(MSTU(11),*) ' ZMIX = ',(ZMIX(3,I),I=1,4)
+ WRITE(MSTU(11),*) ' ZMIXI = ',(ZMIXI(3,I),I=1,4)
+ WRITE(MSTU(11),*) ' ZMIX = ',(ZMIX(4,I),I=1,4)
+ WRITE(MSTU(11),*) ' ZMIXI = ',(ZMIXI(4,I),I=1,4)
+ WRITE(MSTU(11),*) ' ALFA = ',ALFA
+ WRITE(MSTU(11),*) ' BETA = ',BETA
+ WRITE(MSTU(11),*) ' STOP = ',(SFMIX(6,I),I=1,4)
+ WRITE(MSTU(11),*) ' SBOT = ',(SFMIX(5,I),I=1,4)
+ WRITE(MSTU(11),*) 'CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC'
+ ENDIF
+
+C...Set up the Higgs couplings - needed here since initialization
+C...in PYINRE did not yet occur when PYWIDT is called below.
+ 170 AL=ALFA
+ BE=BETA
+ SINA=SIN(AL)
+ COSA=COS(AL)
+ COSB=COS(BE)
+ SINB=TANB*COSB
+ SBMA=SIN(BE-AL)
+ SAPB=SIN(AL+BE)
+ CAPB=COS(AL+BE)
+ CBMA=COS(BE-AL)
+ C2A=COS(2D0*AL)
+ C2B=COSB**2-SINB**2
+C...tanb (used for H+)
+ PARU(141)=TANB
+
+C...Firstly: h
+C...Coupling to d-type quarks
+ PARU(161)=SINA/COSB
+C...Coupling to u-type quarks
+ PARU(162)=-COSA/SINB
+C...Coupling to leptons
+ PARU(163)=PARU(161)
+C...Coupling to Z
+ PARU(164)=SBMA
+C...Coupling to W
+ PARU(165)=PARU(164)
+
+C...Secondly: H
+C...Coupling to d-type quarks
+ PARU(171)=-COSA/COSB
+C...Coupling to u-type quarks
+ PARU(172)=-SINA/SINB
+C...Coupling to leptons
+ PARU(173)=PARU(171)
+C...Coupling to Z
+ PARU(174)=CBMA
+C...Coupling to W
+ PARU(175)=PARU(174)
+C...Coupling to h
+ IF(IMSS(4).GE.2) THEN
+ PARU(176)=COS(2D0*AL)*COS(BE+AL)-2D0*SIN(2D0*AL)*SIN(BE+AL)
+ ELSE
+ HHH(3)=HHH(3)+HHH(4)+HHH(5)
+ PARU(176)=-3D0/HHH(1)*(HHH(1)*SINA**2*COSB*COSA+
+ 1 HHH(2)*COSA**2*SINB*SINA+HHH(3)*(SINA**3*SINB+COSA**3*COSB-
+ 2 2D0/3D0*CBMA)-HHH(6)*SINA*(COSB*C2A+COSA*CAPB)+
+ 3 HHH(7)*COSA*(SINB*C2A+SINA*CAPB))
+ ENDIF
+C...Coupling to H+
+C...Define later
+ IF(IMSS(4).GE.2) THEN
+ PARU(168)=-SBMA-COS(2D0*BE)*SAPB/2D0/(1D0-XW)
+ ELSE
+ PARU(168)=1D0/HHH(1)*(HHH(1)*SINB**2*COSB*SINA-
+ 1 HHH(2)*COSB**2*SINB*COSA-HHH(3)*(SINB**3*COSA-COSB**3*SINA)+
+ 2 2D0*HHH(5)*SBMA-HHH(6)*SINB*(COSB*SAPB+SINA*C2B)-
+ 3 HHH(7)*COSB*(COSA*C2B-SINB*SAPB)-(HHH(5)-HHH(4))*SBMA)
+ ENDIF
+C...Coupling to A
+ IF(IMSS(4).GE.2) THEN
+ PARU(177)=COS(2D0*BE)*COS(BE+AL)
+ ELSE
+ PARU(177)=-1D0/HHH(1)*(HHH(1)*SINB**2*COSB*COSA+
+ 1 HHH(2)*COSB**2*SINB*SINA+HHH(3)*(SINB**3*SINA+COSB**3*COSA)-
+ 2 2D0*HHH(5)*CBMA-HHH(6)*SINB*(COSB*CAPB+COSA*C2B)+
+ 3 HHH(7)*COSB*(SINB*CAPB+SINA*C2B))
+ ENDIF
+C...Coupling to H+
+ IF(IMSS(4).GE.2) THEN
+ PARU(178)=PARU(177)
+ ELSE
+ PARU(178)=PARU(177)-(HHH(5)-HHH(4))/HHH(1)*CBMA
+ ENDIF
+C...Thirdly, A
+C...Coupling to d-type quarks
+ PARU(181)=TANB
+C...Coupling to u-type quarks
+ PARU(182)=1D0/PARU(181)
+C...Coupling to leptons
+ PARU(183)=PARU(181)
+ PARU(184)=0D0
+ PARU(185)=0D0
+C...Coupling to Z h
+ PARU(186)=COS(BE-AL)
+C...Coupling to Z H
+ PARU(187)=SIN(BE-AL)
+ PARU(188)=0D0
+ PARU(189)=0D0
+ PARU(190)=0D0
+
+C...Finally: H+
+C...Coupling to W h
+ PARU(195)=COS(BE-AL)
+
+C...Tell that all Higgs couplings have been set.
+ MSTP(4)=1
+
+C...Set R-Violating couplings.
+C...Set lambda couplings to common value or "natural values".
+ IF ((IMSS(51).NE.3).AND.(IMSS(51).NE.0)) THEN
+ VIR3=1D0/(126D0)**3
+ DO 200 IRK=1,3
+ DO 190 IRI=1,3
+ DO 180 IRJ=1,3
+ IF (IRI.NE.IRJ) THEN
+ IF (IRI.LT.IRJ) THEN
+ RVLAM(IRI,IRJ,IRK)=RMSS(51)
+ IF (IMSS(51).EQ.2) RVLAM(IRI,IRJ,IRK)=RMSS(51)*
+ & SQRT(PMAS(9+2*IRI,1)*PMAS(9+2*IRJ,1)*
+ & PMAS(9+2*IRK,1)*VIR3)
+ ELSE
+ RVLAM(IRI,IRJ,IRK)=-RVLAM(IRJ,IRI,IRK)
+ ENDIF
+ ELSE
+ RVLAM(IRI,IRJ,IRK)=0D0
+ ENDIF
+ 180 CONTINUE
+ 190 CONTINUE
+ 200 CONTINUE
+ ENDIF
+C...Set lambda' couplings to common value or "natural values".
+ IF ((IMSS(52).NE.3).AND.(IMSS(52).NE.0)) THEN
+ VIR3=1D0/(126D0)**3
+ DO 230 IRI=1,3
+ DO 220 IRJ=1,3
+ DO 210 IRK=1,3
+ RVLAMP(IRI,IRJ,IRK)=RMSS(52)
+ IF (IMSS(52).EQ.2) RVLAMP(IRI,IRJ,IRK)=RMSS(52)*
+ & SQRT(PMAS(9+2*IRI,1)*0.5D0*(PMAS(2*IRJ,1)+
+ & PMAS(2*IRJ-1,1))*PMAS(2*IRK-1,1)*VIR3)
+ 210 CONTINUE
+ 220 CONTINUE
+ 230 CONTINUE
+ ENDIF
+C...Set lambda'' couplings to common value or "natural values".
+ IF ((IMSS(53).NE.3).AND.(IMSS(53).NE.0)) THEN
+ VIR3=1D0/(126D0)**3
+ DO 260 IRI=1,3
+ DO 250 IRJ=1,3
+ DO 240 IRK=1,3
+ IF (IRJ.NE.IRK) THEN
+ IF (IRJ.LT.IRK) THEN
+ RVLAMB(IRI,IRJ,IRK)=RMSS(53)
+ IF (IMSS(53).EQ.2) RVLAMB(IRI,IRJ,IRK)=
+ & RMSS(53)*SQRT(PMAS(2*IRI,1)*PMAS(2*IRJ-1,1)*
+ & PMAS(2*IRK-1,1)*VIR3)
+ ELSE
+ RVLAMB(IRI,IRJ,IRK)=-RVLAMB(IRI,IRK,IRJ)
+ ENDIF
+ ELSE
+ RVLAMB(IRI,IRJ,IRK) = 0D0
+ ENDIF
+ 240 CONTINUE
+ 250 CONTINUE
+ 260 CONTINUE
+ ENDIF
+
+C...Antisymmetrize couplings set by user
+ IF (IMSS(51).EQ.3.OR.IMSS(53).EQ.3) THEN
+ DO 290 IRI=1,3
+ DO 280 IRJ=1,3
+ DO 270 IRK=1,3
+ IF (RVLAM(IRI,IRJ,IRK).NE.-RVLAM(IRJ,IRI,IRK)) THEN
+ RVLAM(IRJ,IRI,IRK)=-RVLAM(IRI,IRJ,IRK)
+ IF (IRI.EQ.IRJ) RVLAM(IRI,IRJ,IRK)=0D0
+ ENDIF
+ IF (RVLAMB(IRI,IRJ,IRK).NE.-RVLAMB(IRI,IRK,IRJ)) THEN
+ RVLAMB(IRI,IRK,IRJ)=-RVLAMB(IRI,IRJ,IRK)
+ IF (IRJ.EQ.IRK) RVLAMB(IRI,IRJ,IRK)=0D0
+ ENDIF
+ 270 CONTINUE
+ 280 CONTINUE
+ 290 CONTINUE
+ ENDIF
+
+C...Write spectrum to SLHA file
+ IF (IMSS(23).NE.0) THEN
+ IFAIL=0
+ CALL PYSLHA(3,0,IFAIL)
+ ENDIF
+
+C...Second part of routine: set decay modes and branching ratios.
+
+C...Allow chi10 -> gravitino + gamma or not.
+ KC=PYCOMP(KSUSY1+39)
+ IF( IMSS(11) .NE. 0 ) THEN
+ PMAS(KC,1)=RMSS(21)/1D9
+ PMAS(KC,2)=0D0
+ IRPRTY=0
+ WRITE(MSTU(11),*) ' ALLOWING DECAYS TO GRAVITINOS '
+ ELSE IF (IMSS(51).GE.1.OR.IMSS(52).GE.1.OR.IMSS(53).GE.1) THEN
+ IRPRTY=0
+ IF (IMSS(51).GE.1) WRITE(MSTU(11),*)
+ & ' ALLOWING SUSY LLE DECAYS'
+ IF (IMSS(52).GE.1) WRITE(MSTU(11),*)
+ & ' ALLOWING SUSY LQD DECAYS'
+ IF (IMSS(53).GE.1) WRITE(MSTU(11),*)
+ & ' ALLOWING SUSY UDD DECAYS'
+ IF (IMSS(53).GE.1.AND.IMSS(52).GE.1) WRITE(MSTU(11),*)
+ & ' --- Warning: R-Violating couplings possibly',
+ & ' incompatible with proton decay'
+ ELSE
+ PMAS(KC,1)=9999D0
+ IRPRTY=1
+ ENDIF
+
+C...Loop over sparticle and Higgs species.
+ PMCHI1=PMAS(PYCOMP(KSUSY1+22),1)
+C...Find the LSP or NLSP for a gravitino LSP
+ ILSP=0
+ PMLSP=1D20
+ DO 300 I=1,36
+ KF=KFSUSY(I)
+ IF(KF.EQ.1000039) GOTO 300
+ KC=PYCOMP(KF)
+ IF(PMAS(KC,1).LT.PMLSP) THEN
+ ILSP=I
+ PMLSP=PMAS(KC,1)
+ ENDIF
+ 300 CONTINUE
+ DO 370 I=1,50
+ IF (I.GT.39.AND.IMSS(13).NE.1) GOTO 370
+ KF=KFSUSY(I)
+ IF (KF.EQ.0) GOTO 370
+ KC=PYCOMP(KF)
+ LKNT=0
+
+C...Check if there are any decays listed for this sparticle
+C...in a file
+ IF (IMSS(22).NE.0.OR.MSTP(161).NE.0) THEN
+ IFAIL=0
+ CALL PYSLHA(2,KF,IFAIL)
+ IF (IFAIL.EQ.0.OR.KF.EQ.6.OR.KF.EQ.24) GOTO 370
+ ELSEIF (I.GE.37) THEN
+ GOTO 370
+ ENDIF
+
+C...Sfermion decays.
+ IF(I.LE.24) THEN
+C...First check to see if sneutrino is lighter than chi10.
+ IF((I.EQ.15.OR.I.EQ.19.OR.I.EQ.23).AND.
+ & PMAS(KC,1).LT.PMCHI1) THEN
+ ELSE
+ CALL PYSFDC(KF,XLAM,IDLAM,LKNT)
+ ENDIF
+
+C...Gluino decays.
+ ELSEIF(I.EQ.25) THEN
+ CALL PYGLUI(KF,XLAM,IDLAM,LKNT)
+ IF(I.EQ.ILSP.AND.IRPRTY.EQ.1) LKNT=0
+
+C...Neutralino decays.
+ ELSEIF(I.GE.26.AND.I.LE.29) THEN
+ CALL PYNJDC(KF,XLAM,IDLAM,LKNT)
+C...chi10 stable or chi10 -> gravitino + gamma.
+ IF(I.EQ.26.AND.IRPRTY.EQ.1) THEN
+ PMAS(KC,2)=1D-6
+ MDCY(KC,1)=0
+ MWID(KC)=0
+ ENDIF
+
+C...Chargino decays.
+ ELSEIF(I.GE.30.AND.I.LE.31) THEN
+ CALL PYCJDC(KF,XLAM,IDLAM,LKNT)
+
+C...Gravitino is stable.
+ ELSEIF(I.EQ.32) THEN
+ MDCY(KC,1)=0
+ MWID(KC)=0
+
+C...Higgs decays.
+ ELSEIF(I.GE.33.AND.I.LE.36) THEN
+C...Calculate decays to non-SUSY particles.
+ CALL PYWIDT(KF,PMAS(KC,1)**2,WDTP,WDTE)
+ LKNT=0
+ DO 310 I1=0,100
+ XLAM(I1)=0D0
+ 310 CONTINUE
+ DO 330 I1=1,MDCY(KC,3)
+ K1=MDCY(KC,2)+I1-1
+ IF(IABS(KFDP(K1,1)).GT.KSUSY1.OR.
+ & IABS(KFDP(K1,2)).GT.KSUSY1) GOTO 330
+ XLAM(I1)=WDTP(I1)
+ XLAM(0)=XLAM(0)+XLAM(I1)
+ DO 320 J1=1,3
+ IDLAM(I1,J1)=KFDP(K1,J1)
+ 320 CONTINUE
+ LKNT=LKNT+1
+ 330 CONTINUE
+C...Add the decays to SUSY particles.
+ CALL PYHEXT(KF,XLAM,IDLAM,LKNT)
+ ENDIF
+C...Zero the branching ratios for use in loop mode
+C...thanks to K. Matchev (FNAL)
+ DO 340 IDC=MDCY(KC,2),MDCY(KC,2)+MDCY(KC,3)-1
+ BRAT(IDC)=0D0
+ 340 CONTINUE
+
+C...Set stable particles.
+ IF(LKNT.EQ.0) THEN
+ MDCY(KC,1)=0
+ MWID(KC)=0
+ PMAS(KC,2)=1D-6
+ PMAS(KC,3)=1D-5
+ PMAS(KC,4)=0D0
+
+C...Store branching ratios in the standard tables.
+ ELSE
+ IDC=MDCY(KC,2)+MDCY(KC,3)-1
+ DELM=1D6
+ DO 360 IL=1,LKNT
+ IDCSV=IDC
+ 350 IDC=IDC+1
+ BRAT(IDC)=0D0
+ IF(IDC.EQ.MDCY(KC,2)+MDCY(KC,3)) IDC=MDCY(KC,2)
+ IF(IDLAM(IL,1).EQ.KFDP(IDC,1).AND.IDLAM(IL,2).EQ.
+ & KFDP(IDC,2).AND.IDLAM(IL,3).EQ.KFDP(IDC,3)) THEN
+ BRAT(IDC)=XLAM(IL)/XLAM(0)
+ XMDIF=PMAS(KC,1)
+ IF(MDME(IDC,1).GE.1) THEN
+ XMDIF=XMDIF-PMAS(PYCOMP(KFDP(IDC,1)),1)-
+ & PMAS(PYCOMP(KFDP(IDC,2)),1)
+ IF(KFDP(IDC,3).NE.0) XMDIF=XMDIF-
+ & PMAS(PYCOMP(KFDP(IDC,3)),1)
+ ENDIF
+ IF(I.LE.32) THEN
+ IF(XMDIF.GE.0D0) THEN
+ DELM=MIN(DELM,XMDIF)
+ ELSE
+ WRITE(MSTU(11),*) ' ERROR WITH DELM ',DELM,XMDIF
+ WRITE(MSTU(11),*) ' KF = ',KF
+ WRITE(MSTU(11),*) ' KF(decay) = ',(KFDP(IDC,J),J=1,3)
+ ENDIF
+ ENDIF
+ GOTO 360
+ ELSEIF(IDC.EQ.IDCSV) THEN
+ WRITE(MSTU(11),*) ' Error in PYMSIN: SUSY decay ',
+ & 'channel not recognized:'
+ WRITE(MSTU(11),*) KF,' -> ',(IDLAM(IL,J),J=1,3)
+ GOTO 360
+ ELSE
+ GOTO 350
+ ENDIF
+ 360 CONTINUE
+
+C...Store width, cutoff and lifetime.
+ PMAS(KC,2)=XLAM(0)
+ IF(PMAS(KC,2).LT.0.1D0*DELM) THEN
+ PMAS(KC,3)=PMAS(KC,2)*10D0
+ ELSE
+ PMAS(KC,3)=0.95D0*DELM
+ ENDIF
+ IF(PMAS(KC,2).NE.0D0) THEN
+ PMAS(KC,4)=PARU(3)/PMAS(KC,2)*1D-12
+ ENDIF
+C...Write decays to SLHA file
+ IF (IMSS(24).NE.0) THEN
+ IFAIL=0
+ CALL PYSLHA(4,KF,IFAIL)
+ ENDIF
+
+ ENDIF
+ 370 CONTINUE
+
+ RETURN
+ END
+C*********************************************************************
+
+C...PYSLHA
+C...Read/write spectrum or decay data from SLHA standard file(s).
+C...P. Skands
+
+C...MUPDA=0 : READ QNUMBERS/PARTICLE ON LUN=IMSS(21)
+C...MUPDA=1 : READ SLHA SPECTRUM ON LUN=IMSS(21)
+C...MUPDA=2 : LOOK FOR DECAY TABLE FOR KF=KFORIG ON LUN=IMSS(22)
+C... (KFORIG=0 : read all decay tables)
+C...MUPDA=3 : WRITE SPECTRUM ON LUN=IMSS(23)
+C...(MUPDA=4 : WRITE DECAY TABLE FOR KF=KFORIG ON LUN=IMSS(24))
+C...MUPDA=5 : READ MASS FOR KF=KFORIG ONLY
+C... (KFORIG=0 : read all MASS entries)
+
+C...Recent updates:
+C...17 Sep 2007: introduced /PYQNUM/ for QNUMBERS storage
+C... : Corrected QNUMBERS name-formation; root only until space
+ SUBROUTINE PYSLHA(MUPDA,KFORIG,IRETRN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ CHARACTER*40 ISAVER,VISAJE
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYDAT4/,/PYPARS/,/PYINT4/
+C...SUSY blocks
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+ SAVE /PYMSSM/,/PYSSMT/,/PYMSRV/
+
+C...Local arrays, character variables and data.
+ COMMON/PYLH3P/MODSEL(200),PARMIN(100),PAREXT(200),RMSOFT(0:100),
+ & AU(3,3),AD(3,3),AE(3,3)
+ COMMON/PYLH3C/CPRO(2),CVER(2)
+C...The common block of new states (QNUMBERS / PARTICLE)
+ COMMON/PYQNUM/NQNUM,NQDUM,KQNUM(500,0:9)
+C...- NQNUM : Number of QNUMBERS blocks that have been read in
+C...- KQNUM(I,0) : KF of new state
+C...- KQNUM(I,1) : 3 times electric charge
+C...- KQNUM(I,2) : Number of spin states: (2S + 1)
+C...- KQNUM(I,3) : Colour rep (1: singlet, 3: triplet, 8: octet)
+C...- KQNUM(I,4) : Particle/Antiparticle distinction (0=own anti)
+C...- KQNUM(I,5:9) : space available for further quantum numbers
+ DIMENSION MMOD(100),MSPC(100),KFDEC(100)
+ SAVE /PYLH3P/,/PYLH3C/,/PYQNUM/,MMOD,MSPC,KFDEC
+C...MMOD: flags to set for each block read in.
+C... 1: MODSEL 2: MINPAR 3: EXTPAR 4: SMINPUTS
+C...MSPC: Flags to set for each block read in.
+C... 1: MASS 2: NMIX 3: UMIX 4: VMIX 5: SBOTMIX
+C... 6: STOPMIX 7: STAUMIX 8: HMIX 9: GAUGE 10: AU
+C...11: AD 12: AE 13: YU 14: YD 15: YE
+C...16: SPINFO 17: ALPHA 18: MSOFT 19: QNUMBERS
+ CHARACTER CPRO*12,CVER*12,CHNLIN*6
+ CHARACTER DOC*11, CHDUM*120, CHBLCK*60
+ CHARACTER CHINL*120,CHKF*9,CHTMP*16
+ INTEGER VERBOS
+ SAVE VERBOS
+C...Date of last Change
+ PARAMETER (DOC='05 Nov 2007')
+C...Local arrays and initial values
+ DIMENSION IDC(5),KFSUSY(50)
+ SAVE KFSUSY
+ DATA NQNUM /0/
+ DATA NDECAY /0/
+ DATA VERBOS /1/
+ DATA NHELLO /0/
+ DATA MLHEF /0/
+ DATA MLHEFD /0/
+ DATA KFSUSY/
+ &1000001,1000002,1000003,1000004,1000005,1000006,
+ &2000001,2000002,2000003,2000004,2000005,2000006,
+ &1000011,1000012,1000013,1000014,1000015,1000016,
+ &2000011,2000012,2000013,2000014,2000015,2000016,
+ &1000021,1000022,1000023,1000025,1000035,1000024,
+ &1000037,1000039, 25, 35, 36, 37,
+ & 6, 24, 45, 46,1000045, 9*0/
+ DATA KFDEC/100*0/
+ RMFUN(IP)=PMAS(PYCOMP(IP),1)
+
+C...Shorthand for spectrum and decay table unit numbers
+ IMSS21=IMSS(21)
+ IMSS22=IMSS(22)
+
+C...Default for LHEF input: read header information
+ IF (IMSS21.EQ.0.AND.MSTP(161).NE.0) IMSS21=MSTP(161)
+ IF (IMSS22.EQ.0.AND.MSTP(161).NE.0) IMSS22=MSTP(161)
+ IF (IMSS21.EQ.MSTP(161)) MLHEF=1
+ IF (IMSS22.EQ.MSTP(161)) MLHEFD=1
+
+C...Hello World
+ IF (NHELLO.EQ.0) THEN
+ IF ((MLHEF.NE.1.AND.MLHEFD.NE.1).OR.(IMSS(1).NE.0)) THEN
+ WRITE(MSTU(11),5000) DOC
+ NHELLO=1
+ ENDIF
+ ENDIF
+
+C...SLHA file assumed opened by user on unit LFN, stored in IMSS(20
+C...+MUPDA).
+ LFN=IMSS21
+ IF (MUPDA.EQ.2) LFN=IMSS22
+ IF (MUPDA.EQ.3) LFN=IMSS(23)
+ IF (MUPDA.EQ.4) LFN=IMSS(24)
+C...Flag that we have not yet found whatever we were asked to find.
+ IRETRN=1
+
+C...STOP IF LFN IS ZERO (i.e. if no LFN was given).
+ IF (LFN.EQ.0) THEN
+ WRITE(MSTU(11),*) '* (PYSLHA:) No valid unit given in IMSS'
+ GOTO 9999
+ ENDIF
+
+C...If reading LHEF header, start by rewinding file
+ IF (MLHEF.EQ.1.OR.MLHEFD.EQ.1) REWIND(LFN)
+
+C...If told to read spectrum, first zero all previous information.
+ IF (MUPDA.EQ.1) THEN
+C...Zero all block read flags
+ DO 100 M=1,100
+ MMOD(M)=0
+ MSPC(M)=0
+ 100 CONTINUE
+C...Zero all (MSSM) masses, widths, and lifetimes in PYTHIA
+ DO 110 ISUSY=1,36
+ KC=PYCOMP(KFSUSY(ISUSY))
+ PMAS(KC,1)=0D0
+ 110 CONTINUE
+C...Zero all (3rd gen sfermion + gaugino/higgsino) mixing matrices.
+ DO 130 J=1,4
+ SFMIX(5,J) =0D0
+ SFMIX(6,J) =0D0
+ SFMIX(15,J)=0D0
+ DO 120 L=1,4
+ ZMIX(L,J) =0D0
+ ZMIXI(L,J)=0D0
+ IF (J.LE.2.AND.L.LE.2) THEN
+ UMIX(L,J) =0D0
+ UMIXI(L,J)=0D0
+ VMIX(L,J) =0D0
+ VMIXI(L,J)=0D0
+ ENDIF
+ 120 CONTINUE
+C...Zero signed masses.
+ SMZ(J)=0D0
+ IF (J.LE.2) SMW(J)=0D0
+ 130 CONTINUE
+
+C...If reading decays, reset PYTHIA decay counters.
+ ELSEIF (MUPDA.EQ.2) THEN
+C...Check if DECAY for this KF already read
+ IF (KFORIG.NE.0) THEN
+ DO 140 IDEC=1,NDECAY
+ IF (KFORIG.EQ.KFDEC(IDEC)) THEN
+ IRETRN=0
+ RETURN
+ ENDIF
+ 140 CONTINUE
+ ENDIF
+ KCC=100
+ NDC=0
+ BRSUM=0D0
+ DO 150 KC=1,MSTU(6)
+ IF(KC.GT.100.AND.KCHG(KC,4).GT.100) KCC=KC
+ NDC=MAX(NDC,MDCY(KC,2)+MDCY(KC,3)-1)
+ 150 CONTINUE
+ ELSEIF (MUPDA.EQ.5) THEN
+C...Zero block read flags
+ DO 160 M=1,100
+ MSPC(M)=0
+ 160 CONTINUE
+ ENDIF
+
+C............READ
+C...(QNUMBERS, spectrum, or decays of KF=KFORIG or MASS of KF=KFORIG)
+ IF(MUPDA.EQ.0.OR.MUPDA.EQ.1.OR.MUPDA.EQ.2.OR.MUPDA.EQ.5) THEN
+C...Initialize program and version strings
+ IF(MUPDA.EQ.1.OR.MUPDA.EQ.2) THEN
+ CPRO(MUPDA)=' '
+ CVER(MUPDA)=' '
+ ENDIF
+
+C...Initialize read loop
+ MERR=0
+ NLINE=0
+ CHBLCK=' '
+C...READ NEW LINE INTO CHINL. GOTO 300 AT END-OF-FILE.
+ 170 CHINL=' '
+ READ(LFN,'(A120)',END=400) CHINL
+C...Count which line number we're at.
+ NLINE=NLINE+1
+ WRITE(CHNLIN,'(I6)') NLINE
+
+C...Skip comment and empty lines without processing.
+ IF (CHINL(1:1).EQ.'#'.OR.CHINL.EQ.' ') GOTO 170
+
+C...We assume all upper case below. Rewrite CHINL to all upper case.
+ INL=0
+ IGOOD=0
+ 180 INL=INL+1
+ IF (CHINL(INL:INL).NE.'#') THEN
+ DO 190 ICH=97,122
+ IF (CHAR(ICH).EQ.CHINL(INL:INL)) CHINL(INL:INL)=CHAR(ICH-32)
+ 190 CONTINUE
+C...Extra safety. Chek for sensible input on line
+ IF (IGOOD.EQ.0) THEN
+ DO 200 ICH=48,90
+ IF (CHAR(ICH).EQ.CHINL(INL:INL)) IGOOD=1
+ 200 CONTINUE
+ ENDIF
+ IF (INL.LT.120) GOTO 180
+ ENDIF
+ IF (IGOOD.EQ.0) GOTO 170
+
+C...Exit when first <event> tag reached in LHEF file
+ DO 210 I1=1,10
+ IF (CHINL(I1:I1+5).EQ.'<EVENT') THEN
+ REWIND(LFN)
+ GOTO 400
+ ENDIF
+ 210 CONTINUE
+
+C...Check for BLOCK begin statement (spectrum).
+ IF (CHINL(1:5).EQ.'BLOCK') THEN
+ MERR=0
+ READ(CHINL,'(A6,A)',ERR=580) CHDUM,CHBLCK
+C...Check if another of this type of block was already read.
+C...(logarithmic interpolation not yet implemented, so duplicates always
+C...give errors)
+ IF (CHBLCK(1:6).EQ.'MODSEL'.AND.MMOD(1).NE.0) MERR=7
+ IF (CHBLCK(1:6).EQ.'MINPAR'.AND.MMOD(2).NE.0) MERR=7
+ IF (CHBLCK(1:6).EQ.'EXTPAR'.AND.MMOD(3).NE.0) MERR=7
+ IF (CHBLCK(1:8).EQ.'SMINPUTS'.AND.MMOD(4).NE.0) MERR=7
+ IF (CHBLCK(1:4).EQ.'MASS'.AND.MSPC(1).NE.0) MERR=7
+ IF (CHBLCK(1:4).EQ.'NMIX'.AND.MSPC(2).NE.0) MERR=7
+ IF (CHBLCK(1:4).EQ.'UMIX'.AND.MSPC(3).NE.0) MERR=7
+ IF (CHBLCK(1:4).EQ.'VMIX'.AND.MSPC(4).NE.0) MERR=7
+ IF (CHBLCK(1:7).EQ.'SBOTMIX'.AND.MSPC(5).NE.0) MERR=7
+ IF (CHBLCK(1:7).EQ.'STOPMIX'.AND.MSPC(6).NE.0) MERR=7
+ IF (CHBLCK(1:7).EQ.'STAUMIX'.AND.MSPC(7).NE.0) MERR=7
+ IF (CHBLCK(1:4).EQ.'HMIX'.AND.MSPC(8).NE.0) MERR=7
+ IF (CHBLCK(1:5).EQ.'ALPHA'.AND.MSPC(17).NE.0) MERR=7
+ IF (CHBLCK(1:5).EQ.'AU'.AND.MSPC(10).NE.0) MERR=7
+ IF (CHBLCK(1:5).EQ.'AD'.AND.MSPC(11).NE.0) MERR=7
+ IF (CHBLCK(1:5).EQ.'AE'.AND.MSPC(12).NE.0) MERR=7
+ IF (CHBLCK(1:5).EQ.'MSOFT'.AND.MSPC(18).NE.0) MERR=7
+C...Check for new particles
+ IF (CHBLCK(1:8).EQ.'QNUMBERS'.OR.CHBLCK(1:8).EQ.'PARTICLE')
+ & THEN
+ MSPC(19)=MSPC(19)+1
+C...Read PDG code
+ READ(CHBLCK(9:60),*) KFQ
+
+ DO 220 MQ=1,NQNUM
+ IF (KQNUM(MQ,0).EQ.KFQ) THEN
+ MERR=17
+ GOTO 380
+ ENDIF
+ 220 CONTINUE
+ IF (NHELLO.EQ.0) THEN
+ WRITE(MSTU(11),5000) DOC
+ NHELLO=1
+ ENDIF
+ WRITE(MSTU(11),'(A,I9,A,F12.3)')
+ & ' * (PYSLHA:) Reading in '//CHBLCK(1:8)//
+ & ' for KF =',KFQ
+ NQNUM=NQNUM+1
+ KQNUM(NQNUM,0)=KFQ
+ MSPC(19)=MSPC(19)+1
+ KCQ=PYCOMP(KFQ)
+C...Only read in new codes (also OK to overwrite if KF > 3000000)
+ IF (KCQ.EQ.0.OR.IABS(KFQ).GE.3000000) THEN
+ IF (KCQ.EQ.0) THEN
+ DO 230 KCT=100,MSTU(6)
+ IF(KCHG(KCT,4).GT.100) KCQ=KCT
+ 230 CONTINUE
+ KCQ=KCQ+1
+ ENDIF
+ KCC=KCQ
+ KCHG(KCQ,4)=KFQ
+C...First write PDG code as name
+ WRITE(CHTMP,*) KFQ
+ WRITE(CHTMP,'(A)') CHTMP(2:10)
+C...Then look for real name
+ IBEG=9
+ 240 IBEG=IBEG+1
+ IF (CHBLCK(IBEG:IBEG).NE.'#'.AND.IBEG.LT.59) GOTO 240
+ 250 IBEG=IBEG+1
+ IF (CHBLCK(IBEG:IBEG).EQ.' '.AND.IBEG.LT.59) GOTO 250
+ IEND=IBEG-1
+ 260 IEND=IEND+1
+ IF (CHBLCK(IEND+1:IEND+1).NE.' '.AND.IEND.LT.59) GOTO 260
+ IF (IEND.LT.59) THEN
+ READ(CHBLCK(IBEG:IEND),'(A)',ERR=270) CHDUM
+ IF (CHDUM.NE.' ') CHTMP=CHDUM
+ ENDIF
+ 270 READ(CHTMP,'(A)') CHAF(KCQ,1)
+ MSTU(20)=0
+C...Set stable for now
+ PMAS(KCQ,2)=1D-6
+ MWID(KCQ)=0
+ MDCY(KCQ,1)=0
+ MDCY(KCQ,2)=0
+ MDCY(KCQ,3)=0
+ ELSE
+ WRITE(MSTU(11),*)
+ & '* (PYSLHA:) KF =',KFQ,' already exists: ',
+ & CHAF(KCQ,1), '. Entry ignored.'
+ MERR=7
+ ENDIF
+ ENDIF
+C...Finalize this line and read next.
+ GOTO 380
+C...Check for DECAY begin statement (decays).
+ ELSEIF (CHINL(1:3).EQ.'DEC') THEN
+ MERR=0
+ BRSUM=0D0
+ CHBLCK='DECAY'
+C...Read KF code and WIDTH
+ MPSIGN=1
+ READ(CHINL(7:INL),*,ERR=590) KF, WIDTH
+ IF (KF.LE.0) THEN
+ KF=-KF
+ MPSIGN=-1
+ ENDIF
+C...If this is not the KF we're looking for...
+ IF ((KFORIG.NE.0.AND.KF.NE.KFORIG).OR.MUPDA.NE.2) THEN
+C...Set block skip flag and read next line.
+ MERR=16
+ GOTO 380
+ ELSE
+C...Check whether decay table for this particle already read in
+ DO 280 IDECAY=1,NDECAY
+ IF (KFDEC(IDECAY).EQ.KF) THEN
+ MERR=16
+ GOTO 380
+ ENDIF
+ 280 CONTINUE
+ ENDIF
+
+C...Determine PYTHIA KC code of particle
+ KCREP=0
+ IF(KF.LE.100) THEN
+ KCREP=KF
+ ELSE
+ DO 290 KCR=101,KCC
+ IF(KCHG(KCR,4).EQ.KF) KCREP=KCR
+ 290 CONTINUE
+ ENDIF
+ KC=KCREP
+ IF (KCREP.NE.0) THEN
+C...Particle is already known. Don't do anything yet.
+ ELSE
+C... Add new particle. Actually, this should not happen.
+C... New particles should be added already when reading the spectrum
+C... information, so go under previously stable category.
+ KCC=KCC+1
+ KC=KCC
+ ENDIF
+
+ IF (WIDTH.LE.0D0) THEN
+C...Stable (i.e. LSP)
+ WRITE(MSTU(11),*)
+ & '* (PYSLHA:) Reading in SLHA stable particle ',
+ & 'KF =',KF,': ',CHAF(KCREP,1)(1:16)
+ IF (WIDTH.LT.0D0) THEN
+ CALL PYERRM(19,'(PYSLHA:) Negative width forced to'//
+ & ' zero !')
+ WIDTH=0D0
+ ENDIF
+ PMAS(KC,2)=1D-6
+ MWID(KC)=0
+ MDCY(KC,1)=0
+C...Ignore any decay lines that may be present for this KF
+ MERR=16
+ MDCY(KC,2)=0
+ MDCY(KC,3)=0
+C...Return ok
+ IRETRN=0
+ ENDIF
+C...Finalize and start reading in decay modes.
+ GOTO 380
+ ELSEIF (MOD(MERR,10).GE.6) THEN
+C...If ignore block flag set, skip directly to next line.
+ GOTO 170
+ ENDIF
+
+C...READ SPECTRUM
+ IF (MUPDA.EQ.0.AND.MERR.EQ.0) THEN
+ IF (CHBLCK(1:8).EQ.'QNUMBERS'.OR.CHBLCK(1:8).EQ.'PARTICLE')
+ & THEN
+ READ(CHINL,*) INDX, IVAL
+ IF (INDX.GE.1.AND.INDX.LE.9) KQNUM(NQNUM,INDX)=IVAL
+ IF (INDX.EQ.1) KCHG(KCQ,1)=IVAL
+ IF (INDX.EQ.3) KCHG(KCQ,2)=0
+ IF (INDX.EQ.3.AND.IVAL.EQ.3) KCHG(KCQ,2)=1
+ IF (INDX.EQ.3.AND.IVAL.EQ.-3) KCHG(KCQ,2)=-1
+ IF (INDX.EQ.3.AND.IVAL.EQ.8) KCHG(KCQ,2)=2
+ IF (INDX.EQ.4) THEN
+ KCHG(KCQ,3)=IVAL
+ IF (IVAL.EQ.1) THEN
+ CHTMP=CHAF(KCQ,1)
+ IF (CHTMP.EQ.' ') THEN
+ WRITE(CHAF(KCQ,1),*) KCHG(KCQ,4)
+ WRITE(CHAF(KCQ,2),*) -KCHG(KCQ,4)
+ ELSE
+ ILAST=17
+ 300 ILAST=ILAST-1
+ IF (CHTMP(ILAST:ILAST).EQ.' ') GOTO 300
+ IF (CHTMP(ILAST:ILAST).EQ.'+') THEN
+ CHTMP(ILAST:ILAST)='-'
+ ELSE
+ CHTMP(ILAST+1:MIN(16,ILAST+4))='bar'
+ ENDIF
+ CHAF(KCQ,2)=CHTMP
+ ENDIF
+ ENDIF
+ ENDIF
+ ELSE
+ MERR=8
+ ENDIF
+ ELSEIF ((MUPDA.EQ.1.OR.MUPDA.EQ.5).AND.MERR.EQ.0) THEN
+C...MASS: Mass spectrum
+ IF (CHBLCK(1:4).EQ.'MASS') THEN
+ READ(CHINL,*) KF, VAL
+ MERR=1
+ KC=0
+ IF (MUPDA.EQ.1.OR.KF.EQ.KFORIG.OR.KFORIG.EQ.0) THEN
+C...Read in masses for anything
+ MERR=0
+ KC=PYCOMP(KF)
+C...Don't read in masses for the light quarks
+ IF (IABS(KF).LE.3) THEN
+ WRITE(MSTU(11),'(A,I9,A,F12.3)')
+ & ' * (PYSLHA:) Ignoring MASS entry for KF =',
+ & KF
+ MERR=1
+ ENDIF
+ IF (KC.NE.0) THEN
+ MSPC(1)=MSPC(1)+1
+ PMAS(KC,1) = ABS(VAL)
+ IF (MUPDA.EQ.5.AND.IMSS(1).EQ.0) THEN
+ WRITE(MSTU(11),'(A,I9,A,F12.3)')
+ & ' * (PYSLHA:) Reading in MASS entry for KF =',
+ & KF, ', pole mass =', VAL
+ IRETRN=0
+ ENDIF
+C... Signed masses
+ IF (KF.EQ.1000021.AND.MSPC(18).EQ.0) RMSS(3)=VAL
+ IF (KF.EQ.1000022) SMZ(1)=VAL
+ IF (KF.EQ.1000023) SMZ(2)=VAL
+ IF (KF.EQ.1000025) SMZ(3)=VAL
+ IF (KF.EQ.1000035) SMZ(4)=VAL
+ IF (KF.EQ.1000024) SMW(1)=VAL
+ IF (KF.EQ.1000037) SMW(2)=VAL
+ ENDIF
+ ELSEIF (MUPDA.EQ.5) THEN
+ MERR=0
+ ENDIF
+C... MODSEL: Model selection and global switches
+ ELSEIF (CHBLCK(1:6).EQ.'MODSEL') THEN
+ READ(CHINL,*) INDX, IVAL
+ IF (INDX.LE.200.AND.INDX.GT.0) THEN
+ IF (IMSS(1).EQ.0) IMSS(1)=11
+ MODSEL(INDX)=IVAL
+ MMOD(1)=MMOD(1)+1
+ IF (INDX.EQ.3.AND.IVAL.EQ.1.AND.PYCOMP(1000045).EQ.0) THEN
+C... Switch on NMSSM
+ WRITE(MSTU(11),*) '* (PYSLHA:) switching on NMSSM'
+ IMSS(13)=MAX(1,IMSS(13))
+C... Add NMSSM states if not already done
+
+ KFN=25
+ KCN=KFN
+ CHAF(KCN,1)='h_10'
+ CHAF(KCN,2)=' '
+
+ KFN=35
+ KCN=KFN
+ CHAF(KCN,1)='h_20'
+ CHAF(KCN,2)=' '
+
+ KFN=45
+ KCN=KFN
+ CHAF(KCN,1)='h_30'
+ CHAF(KCN,2)=' '
+
+ KFN=36
+ KCN=KFN
+ CHAF(KCN,1)='A_10'
+ CHAF(KCN,2)=' '
+
+ KFN=46
+ KCN=KFN
+ CHAF(KCN,1)='A_20'
+ CHAF(KCN,2)=' '
+
+ KFN=1000045
+ KCN=PYCOMP(KFN)
+ IF (KCN.EQ.0) THEN
+ DO 310 KCT=100,MSTU(6)
+ IF(KCHG(KCT,4).GT.100) KCN=KCT
+ 310 CONTINUE
+ KCN=KCN+1
+ KCHG(KCN,4)=KFN
+ MSTU(20)=0
+ ENDIF
+C... Set stable for now
+ PMAS(KCN,2)=1D-6
+ MWID(KCN)=0
+ MDCY(KCN,1)=0
+ MDCY(KCN,2)=0
+ MDCY(KCN,3)=0
+ CHAF(KCN,1)='~chi_50'
+ CHAF(KCN,2)=' '
+ ENDIF
+ ELSE
+ MERR=1
+ ENDIF
+ ELSEIF (MUPDA.EQ.5) THEN
+C...If MUPDA = 5, skip all except MASS, return if MODSEL
+ MERR=8
+ ELSEIF (CHBLCK(1:8).EQ.'QNUMBERS'.OR.
+ & CHBLCK(1:8).EQ.'PARTICLE') THEN
+C...Don't print a warning for QNUMBERS when reading spectrum
+ MERR=8
+C...MINPAR: Minimal model parameters
+ ELSEIF (CHBLCK(1:6).EQ.'MINPAR') THEN
+ READ(CHINL,*) INDX, VAL
+ IF (INDX.LE.100.AND.INDX.GT.0) THEN
+ PARMIN(INDX)=VAL
+ MMOD(2)=MMOD(2)+1
+ ELSE
+ MERR=1
+ ENDIF
+ IF (MMOD(3).NE.0) THEN
+ WRITE(MSTU(11),*)
+ & '* (PYSLHA:) MINPAR should come before EXTPAR !'
+ MERR=1
+ ENDIF
+C...tan(beta)
+ IF (INDX.EQ.3) RMSS(5)=VAL
+C...EXTPAR: non-minimal model parameters.
+ ELSEIF (CHBLCK(1:6).EQ.'EXTPAR') THEN
+ IF (MMOD(1).NE.0) THEN
+ READ(CHINL,*) INDX, VAL
+ IF (INDX.LE.200.AND.INDX.GT.0) THEN
+ PAREXT(INDX)=VAL
+ MMOD(3)=MMOD(3)+1
+ ELSE
+ MERR=1
+ ENDIF
+ ELSE
+ WRITE(MSTU(11),*)
+ & '* (PYSLHA:) Reading EXTPAR, but no MODSEL !'
+ MERR=1
+ ENDIF
+C...tan(beta)
+ IF (INDX.EQ.25) RMSS(5)=VAL
+ ELSEIF (CHBLCK(1:8).EQ.'SMINPUTS') THEN
+ READ(CHINL,*) INDX, VAL
+ IF (INDX.LE.3.OR.INDX.EQ.5.OR.INDX.GE.7) THEN
+ MERR=1
+ ELSEIF (INDX.EQ.4) THEN
+ PMAS(PYCOMP(23),1)=VAL
+ ELSEIF (INDX.EQ.6) THEN
+ PMAS(PYCOMP(6),1)=VAL
+ ENDIF
+ ELSEIF (CHBLCK(1:4).EQ.'NMIX'.OR.CHBLCK(1:4).EQ.'VMIX'.OR
+ $ .CHBLCK(1:4).EQ.'UMIX'.OR.CHBLCK(1:7).EQ.'STOPMIX'.OR
+ $ .CHBLCK(1:7).EQ.'SBOTMIX'.OR.CHBLCK(1:7).EQ.'STAUMIX')
+ $ THEN
+C...NMIX,UMIX,VMIX,STOPMIX,SBOTMIX, and STAUMIX. Mixing.
+ IM=0
+ IF (CHBLCK(5:6).EQ.'IM') IM=1
+ 320 READ(CHINL,*) INDX1, INDX2, VAL
+ IF (CHBLCK(1:1).EQ.'N'.AND.INDX1.LE.4.AND.INDX2.LE.4) THEN
+ IF (IM.EQ.0) ZMIX(INDX1,INDX2) = VAL
+ IF (IM.EQ.1) ZMIXI(INDX1,INDX2)= VAL
+ MSPC(2)=MSPC(2)+1
+ ELSEIF (CHBLCK(1:1).EQ.'U') THEN
+ IF (IM.EQ.0) UMIX(INDX1,INDX2) = VAL
+ IF (IM.EQ.1) UMIXI(INDX1,INDX2)= VAL
+ MSPC(3)=MSPC(3)+1
+ ELSEIF (CHBLCK(1:1).EQ.'V') THEN
+ IF (IM.EQ.0) VMIX(INDX1,INDX2) = VAL
+ IF (IM.EQ.1) VMIXI(INDX1,INDX2)= VAL
+ MSPC(4)=MSPC(4)+1
+ ELSEIF (CHBLCK(1:4).EQ.'STOP'.OR.CHBLCK(1:4).EQ.'SBOT'.OR
+ $ .CHBLCK(1:4).EQ.'STAU') THEN
+ IF (CHBLCK(1:4).EQ.'STOP') THEN
+ KFSM=6
+ ISPC=6
+ ELSEIF (CHBLCK(1:4).EQ.'SBOT') THEN
+ KFSM=5
+ ISPC=5
+ ELSEIF (CHBLCK(1:4).EQ.'STAU') THEN
+ KFSM=15
+ ISPC=7
+ ENDIF
+C...Set SFMIX element
+ SFMIX(KFSM,2*(INDX1-1)+INDX2)=VAL
+ MSPC(ISPC)=MSPC(ISPC)+1
+ ENDIF
+C...Running parameters
+ ELSEIF (CHBLCK(1:4).EQ.'HMIX') THEN
+ READ(CHBLCK(8:25),*,ERR=620) Q
+ READ(CHINL,*) INDX, VAL
+ MSPC(8)=MSPC(8)+1
+ IF (INDX.EQ.1) THEN
+ RMSS(4) = VAL
+ ELSE
+ MERR=1
+ MSPC(8)=MSPC(8)-1
+ ENDIF
+ ELSEIF (CHBLCK(1:5).EQ.'ALPHA') THEN
+ READ(CHINL,*,ERR=630) VAL
+ RMSS(18)= VAL
+ MSPC(17)=MSPC(17)+1
+C...Higgs parameters set manually or with FeynHiggs.
+ IMSS(4)=MAX(2,IMSS(4))
+ ELSEIF (CHBLCK(1:2).EQ.'AU'.OR.CHBLCK(1:2).EQ.'AD'.OR
+ & .CHBLCK(1:2).EQ.'AE') THEN
+ READ(CHBLCK(9:26),*,ERR=620) Q
+ READ(CHINL,*) INDX1, INDX2, VAL
+ IF (CHBLCK(2:2).EQ.'U') THEN
+ AU(INDX1,INDX2)=VAL
+ IF (INDX1.EQ.3.AND.INDX2.EQ.3) RMSS(16)=VAL
+ MSPC(11)=MSPC(11)+1
+ ELSEIF (CHBLCK(2:2).EQ.'D') THEN
+ AD(INDX1,INDX2)=VAL
+ IF (INDX1.EQ.3.AND.INDX2.EQ.3) RMSS(15)=VAL
+ MSPC(10)=MSPC(10)+1
+ ELSEIF (CHBLCK(2:2).EQ.'E') THEN
+ AE(INDX1,INDX2)=VAL
+ IF (INDX1.EQ.3.AND.INDX2.EQ.3) RMSS(17)=VAL
+ MSPC(12)=MSPC(12)+1
+ ELSE
+ MERR=1
+ ENDIF
+ ELSEIF (CHBLCK(1:5).EQ.'MSOFT') THEN
+ IF (MSPC(18).EQ.0) THEN
+ READ(CHBLCK(9:25),*,ERR=620) Q
+ RMSOFT(0)=Q
+ ENDIF
+ READ(CHINL,*) INDX, VAL
+ RMSOFT(INDX)=VAL
+ MSPC(18)=MSPC(18)+1
+ ELSEIF (CHBLCK(1:5).EQ.'GAUGE') THEN
+ MERR=8
+ ELSEIF (CHBLCK(1:2).EQ.'YU'.OR.CHBLCK(1:2).EQ.'YD'.OR
+ & .CHBLCK(1:2).EQ.'YE') THEN
+ MERR=8
+ ELSEIF (CHBLCK(1:6).EQ.'SPINFO') THEN
+ READ(CHINL(1:6),*) INDX
+ IT=0
+ MIRD=0
+ 330 IT=IT+1
+ IF (CHINL(IT:IT).EQ.' ') GOTO 330
+C...Don't read index
+ IF (CHINL(IT:IT).EQ.CHAR(INDX+48).AND.MIRD.EQ.0) THEN
+ MIRD=1
+ GOTO 330
+ ENDIF
+ IF (INDX.EQ.1) CPRO(1)=CHINL(IT:IT+12)
+ IF (INDX.EQ.2) CVER(1)=CHINL(IT:IT+12)
+ ELSE
+C... Set unrecognized block flag.
+ MERR=6
+ ENDIF
+
+C...DECAY TABLES
+C...Read in decay information
+ ELSEIF (MUPDA.EQ.2.AND.MERR.EQ.0) THEN
+C...Read new decay chanel
+ IF(CHINL(1:1).EQ.' '.AND.CHBLCK(1:5).EQ.'DECAY') THEN
+ NDC=NDC+1
+C...Read in branching ratio and number of daughters for this mode.
+ READ(CHINL(4:50),*,ERR=390) BRAT(NDC)
+ READ(CHINL(4:50),*,ERR=600) DUM, NDA
+ IF (NDA.LE.5) THEN
+ IF(NDC.GT.MSTU(7)) CALL PYERRM(27,
+ & '(PYSLHA:) Decay data arrays full by KF ='
+ $ //CHAF(KC,1))
+C...If first decay channel, set decays start point in decay table
+ IF(BRSUM.LE.0D0.AND.BRAT(NDC).NE.0D0) THEN
+ IF (KFORIG.EQ.0) WRITE(MSTU(11),*)
+ & '* (PYSLHA:) Reading in SLHA decay table for ',
+ & 'KF =',KF,': ',CHAF(KCREP,1)(1:16)
+C...Set particle parameters (mass set when reading BLOCK MASS above)
+ PMAS(KC,2)=WIDTH
+ IF (KF.EQ.25.OR.KF.EQ.35.OR.KF.EQ.36) THEN
+ WRITE(MSTU(11),*)
+ & '* Note: the Pythia gg->h/H/A cross section'//
+ & ' is proportional to the h/H/A->gg width'
+ ENDIF
+ PMAS(KC,3)=0D0
+ PMAS(KC,4)=PARU(3)*1D-12/WIDTH
+ MWID(KC)=2
+ MDCY(KC,1)=1
+ MDCY(KC,2)=NDC
+ MDCY(KC,3)=0
+C...Add to list of DECAY blocks currently read
+ NDECAY=NDECAY+1
+ KFDEC(NDECAY)=KF
+C...Return ok
+ IRETRN=0
+ ENDIF
+C... Count up number of decay modes for this particle
+ MDCY(KC,3)=MDCY(KC,3)+1
+C... Read in decay daughters.
+ READ(CHINL(4:120),*,ERR=610) DUM,IDM, (IDC(IDA),IDA=1,NDA)
+C... Flip sign if reading antiparticle decays (if antipartner exists)
+ DO 340 IDA=1,NDA
+ IF (KCHG(PYCOMP(IDC(IDA)),3).NE.0)
+ & IDC(IDA)=MPSIGN*IDC(IDA)
+ 340 CONTINUE
+C...Switch on decay channel, with products ordered in decreasing ABS(KF)
+ MDME(NDC,1)=1
+ IF (BRAT(NDC).LE.0D0) MDME(NDC,1)=0
+ BRSUM=BRSUM+ABS(BRAT(NDC))
+ BRAT(NDC)=ABS(BRAT(NDC))
+ 350 IFLIP=0
+ DO 360 IDA=1,NDA-1
+ IF (IABS(IDC(IDA+1)).GT.IABS(IDC(IDA))) THEN
+ ITMP=IDC(IDA)
+ IDC(IDA)=IDC(IDA+1)
+ IDC(IDA+1)=ITMP
+ IFLIP=IFLIP+1
+ ENDIF
+ 360 CONTINUE
+ IF (IFLIP.GT.0) GOTO 350
+C...Treat as ordinary decay, no fancy stuff.
+ MDME(NDC,2)=0
+ DO 370 IDA=1,5
+ IF (IDA.LE.NDA) THEN
+ KFDP(NDC,IDA)=IDC(IDA)
+ ELSE
+ KFDP(NDC,IDA)=0
+ ENDIF
+ 370 CONTINUE
+C WRITE(MSTU(11),7510) NDC, BRAT(NDC), NDA,
+C & (KFDP(NDC,J),J=1,NDA)
+ ELSE
+ CALL PYERRM(7,'(PYSLHA:) Too many daughters on line'//
+ & CHNLIN)
+ MERR=11
+ NDC=NDC-1
+ ENDIF
+ ELSEIF(CHINL(1:1).EQ.'+') THEN
+ MERR=11
+ ELSEIF(CHBLCK(1:6).EQ.'DCINFO') THEN
+ MERR=16
+ ELSE
+ MERR=16
+ ENDIF
+ ENDIF
+C... Error check.
+ 380 IF (MOD(MERR,10).EQ.1.AND.(MUPDA.EQ.1.OR.MUPDA.EQ.2)) THEN
+ WRITE(MSTU(11),*) '* (PYSLHA:) Ignoring line '//CHNLIN//': '
+ & //CHINL(1:40)
+ MERR=0
+ ELSEIF (MERR.EQ.6.AND.MUPDA.EQ.1) THEN
+ WRITE(MSTU(11),*) '* (PYSLHA:) Ignoring BLOCK '//
+ & CHBLCK(1:MIN(INL,40))//'... on line'//CHNLIN
+ ELSEIF (MERR.EQ.8.AND.MUPDA.EQ.1) THEN
+ WRITE(MSTU(11),*) '* (PYSLHA:) PYTHIA will not use BLOCK '
+ & //CHBLCK(1:INL)//'... on line'//CHNLIN
+ ELSEIF (MERR.EQ.16.AND.MUPDA.EQ.2.AND.IMSS21.EQ.0.AND.
+ & CHBLCK(1:1).NE.'D'.AND.VERBOS.EQ.1) THEN
+ WRITE(MSTU(11),*) '* (PYSLHA:) Ignoring BLOCK '//CHBLCK(1:INL)
+ & //'... on line'//CHNLIN
+ ELSEIF (MERR.EQ.7.AND.MUPDA.EQ.1) THEN
+ WRITE(MSTU(11),*) '* (PYSLHA:) Ignoring extra BLOCK '/
+ & /CHBLCK(1:INL)//'... on line'//CHNLIN
+ ELSEIF (MERR.EQ.2.AND.MUPDA.EQ.1) THEN
+ WRITE (CHTMP,*) KF
+ WRITE(MSTU(11),*)
+ & '* (PYSLHA:) Ignoring extra MASS entry for KF='//
+ & CHTMP(1:9)//' on line'//CHNLIN
+ ENDIF
+C...Iterate read loop
+ GOTO 170
+C...Error catching
+ 390 WRITE(*,*) '* (PYSLHA:) read BR error on line',NLINE,
+ & ', ignoring subsequent lines.'
+ WRITE(*,*) '* (PYSLHA:) Offending line:',CHINL(1:46)
+ CHBLCK=' '
+ GOTO 170
+C...End of read loop
+ 400 CONTINUE
+C...Set flag that KC codes have been rearranged.
+ MSTU(20)=0
+ VERBOS=0
+
+C...Perform possible tests that new information is consistent.
+ IF (MUPDA.EQ.1) THEN
+ MSTU23=MSTU(23)
+ MSTU27=MSTU(27)
+C...Check Z and top masses
+ IF (ABS(PMAS(PYCOMP(23),1)-91.2D0).GT.1D0) THEN
+ WRITE(CHTMP,*) PMAS(PYCOMP(23),1)
+ CALL PYERRM(19,'(PYSLHA:) note Z boson mass, M ='//CHTMP)
+ ENDIF
+ IF (ABS(PMAS(PYCOMP(6),1)-175D0).GT.25D0) THEN
+ WRITE(CHTMP,*) PMAS(PYCOMP(6),1)
+ CALL PYERRM(19,'(PYSLHA:) note top quark mass, M ='
+ & //CHTMP//'GeV')
+ ENDIF
+C...Check masses
+ DO 410 ISUSY=1,37
+ KF=KFSUSY(ISUSY)
+C...Don't complain about right-handed neutrinos
+ IF (KF.EQ.KSUSY2+12.OR.KF.EQ.KSUSY2+14.OR.KF.EQ.KSUSY2
+ & +16) GOTO 410
+C...Only check gravitino in GMSB scenarios
+ IF (MODSEL(1).NE.2.AND.KF.EQ.KSUSY1+39) GOTO 410
+ KC=PYCOMP(KF)
+ IF (PMAS(KC,1).EQ.0D0) THEN
+ WRITE(CHTMP,*) KF
+ CALL PYERRM(9
+ & ,'(PYSLHA:) No mass information found for KF ='
+ & //CHTMP)
+ ENDIF
+ 410 CONTINUE
+C...Check mixing matrices (MSSM only)
+ IF (IMSS(13).EQ.0) THEN
+ IF (MSPC(2).NE.16.AND.MSPC(2).NE.32) CALL PYERRM(9
+ & ,'(PYSLHA:) Inconsistent # of elements in NMIX')
+ IF (MSPC(3).NE.4.AND.MSPC(3).NE.8) CALL PYERRM(9
+ & ,'(PYSLHA:) Inconsistent # of elements in UMIX')
+ IF (MSPC(4).NE.4.AND.MSPC(4).NE.8) CALL PYERRM(9
+ & ,'(PYSLHA:) Inconsistent # of elements in VMIX')
+ IF (MSPC(5).NE.4) CALL PYERRM(9
+ & ,'(PYSLHA:) Inconsistent # of elements in SBOTMIX')
+ IF (MSPC(6).NE.4) CALL PYERRM(9
+ & ,'(PYSLHA:) Inconsistent # of elements in STOPMIX')
+ IF (MSPC(7).NE.4) CALL PYERRM(9
+ & ,'(PYSLHA:) Inconsistent # of elements in STAUMIX')
+ IF (MSPC(8).LT.1) CALL PYERRM(9
+ & ,'(PYSLHA:) Too few elements in HMIX')
+ IF (MSPC(10).EQ.0) CALL PYERRM(9
+ & ,'(PYSLHA:) Missing A_b trilinear coupling')
+ IF (MSPC(11).EQ.0) CALL PYERRM(9
+ & ,'(PYSLHA:) Missing A_t trilinear coupling')
+ IF (MSPC(12).EQ.0) CALL PYERRM(9
+ & ,'(PYSLHA:) Missing A_tau trilinear coupling')
+ IF (MSPC(17).LT.1) CALL PYERRM(9
+ & ,'(PYSLHA:) Missing Higgs mixing angle alpha')
+ ENDIF
+C...Check wavefunction normalizations.
+C...Sfermions
+ DO 420 ISPC=5,7
+ IF (MSPC(ISPC).EQ.4) THEN
+ KFSM=ISPC
+ IF (ISPC.EQ.7) KFSM=15
+ CHECK=ABS(SFMIX(KFSM,1)*SFMIX(KFSM,4)-SFMIX(KFSM,2)
+ & *SFMIX(KFSM,3))
+ IF (ABS(1D0-CHECK).GT.1D-3) THEN
+ KCSM=PYCOMP(KFSM)
+ CALL PYERRM(17
+ & ,'(PYSLHA:) Non-orthonormal mixing matrix for ~'
+ & //CHAF(KCSM,1))
+ ENDIF
+ ENDIF
+ 420 CONTINUE
+C...Neutralinos + charginos
+ DO 440 J=1,4
+ CN1=0D0
+ CN2=0D0
+ CU1=0D0
+ CU2=0D0
+ CV1=0D0
+ CV2=0D0
+ DO 430 L=1,4
+ CN1=CN1+ZMIX(J,L)**2
+ CN2=CN2+ZMIX(L,J)**2
+ IF (J.LE.2.AND.L.LE.2) THEN
+ CU1=CU1+UMIX(J,L)**2
+ CU2=CU2+UMIX(L,J)**2
+ CV1=CV1+VMIX(J,L)**2
+ CV2=CV2+VMIX(L,J)**2
+ ENDIF
+ 430 CONTINUE
+C...NMIX normalization
+ IF (MSPC(2).EQ.16.AND.(ABS(1D0-CN1).GT.1D-3.OR.ABS(1D0-CN2)
+ & .GT.1D-3).AND.IMSS(13).EQ.0) THEN
+ CALL PYERRM(19,
+ & '(PYSLHA:) NMIX: Inconsistent normalization.')
+ WRITE(MSTU(11),'(7x,I2,1x,":",2(1x,F7.4))') J, CN1, CN2
+ ENDIF
+C...UMIX, VMIX normalizations
+ IF (MSPC(3).EQ.4.OR.MSPC(4).EQ.4.AND.IMSS(13).EQ.0) THEN
+ IF (J.LE.2) THEN
+ IF (ABS(1D0-CU1).GT.1D-3.OR.ABS(1D0-CU2).GT.1D-3) THEN
+ CALL PYERRM(19
+ & ,'(PYSLHA:) UMIX: Inconsistent normalization.')
+ WRITE(MSTU(11),'(7x,I2,1x,":",2(1x,F6.2))') J, CU1,
+ & CU2
+ ENDIF
+ IF (ABS(1D0-CV1).GT.1D-3.OR.ABS(1D0-CV2).GT.1D-3) THEN
+ CALL PYERRM(19,
+ & '(PYSLHA:) VMIX: Inconsistent normalization.')
+ WRITE(MSTU(11),'(7x,I2,1x,":",2(1x,F6.2))') J, CV1,
+ & CV2
+ ENDIF
+ ENDIF
+ ENDIF
+ 440 CONTINUE
+ IF (MSTU(27).EQ.MSTU27.AND.MSTU(23).EQ.MSTU23) THEN
+ WRITE(MSTU(11),'(1x,"*"/1x,A/1x,"*")')
+ & '* PYSLHA: No spectrum inconsistencies were found.'
+ ELSE
+ WRITE(MSTU(11),'(1x,"*"/1x,A/1x,"*",A/1x,"*",A/)')
+ & '* (PYSLHA:) INCONSISTENT SPECTRUM WARNING.'
+ & ,' Warning: one or more (serious)'//
+ & ' inconsistencies were found in the spectrum !'
+ & ,' Read the error messages above and check your'//
+ & ' input file.'
+ ENDIF
+C...Increase precision in Higgs sector using FeynHiggs
+ IF (IMSS(4).EQ.3) THEN
+C...FeynHiggs needs MSOFT.
+ IERR=0
+ IF (MSPC(18).EQ.0) THEN
+ WRITE(MSTU(11),'(1x,"*"/1x,A/)')
+ & '* (PYSLHA:) BLOCK MSOFT not found in SLHA file.'//
+ & ' Cannot call FeynHiggs.'
+ IERR=-1
+ ELSE
+ WRITE(MSTU(11),'(1x,/1x,A/)')
+ & '* (PYSLHA:) Now calling FeynHiggs.'
+ CALL PYFEYN(IERR)
+ IF (IERR.NE.0) IMSS(4)=2
+ ENDIF
+ ENDIF
+ ELSEIF (MUPDA.EQ.2.AND.IRETRN.EQ.0.AND.MERR.NE.16) THEN
+ IBEG=1
+ IF (KFORIG.NE.0) IBEG=NDECAY
+ DO 490 IDECAY=IBEG,NDECAY
+ KF = KFDEC(IDECAY)
+ KC = PYCOMP(KF)
+ WRITE(CHKF,8300) KF
+ IF(MIN(PMAS(KC,1),PMAS(KC,2),PMAS(KC,3),PMAS(KC,1)-PMAS(KC,3
+ $ ),PMAS(KC,4)).LT.0D0.OR.MDCY(KC,3).LT.0.OR.(MDCY(KC,3)
+ $ .EQ.0.AND.MDCY(KC,1).GE.1)) CALL PYERRM(17
+ $ ,'(PYSLHA:) Mass/width/life/(# channels) wrong for KF='
+ $ //CHKF)
+ BRSUM=0D0
+ BROPN=0D0
+ DO 460 IDA=MDCY(KC,2),MDCY(KC,2)+MDCY(KC,3)-1
+ IF(MDME(IDA,2).GT.80) GOTO 460
+ KQ=KCHG(KC,1)
+ PMS=PMAS(KC,1)-PMAS(KC,3)-PARJ(64)
+ MERR=0
+ DO 450 J=1,5
+ KP=KFDP(IDA,J)
+ IF(KP.EQ.0.OR.KP.EQ.81.OR.IABS(KP).EQ.82) THEN
+ IF(KP.EQ.81) KQ=0
+ ELSEIF(PYCOMP(KP).EQ.0) THEN
+ MERR=3
+ ELSE
+ KQ=KQ-PYCHGE(KP)
+ KPC=PYCOMP(KP)
+ PMS=PMS-PMAS(KPC,1)
+ IF(MSTJ(24).GT.0) PMS=PMS+0.5D0*MIN(PMAS(KPC,2),
+ & PMAS(KPC,3))
+ ENDIF
+ 450 CONTINUE
+ IF(KQ.NE.0) MERR=MAX(2,MERR)
+ IF(MWID(KC).EQ.0.AND.KF.NE.311.AND.PMS.LT.0D0)
+ & MERR=MAX(1,MERR)
+ IF(MERR.EQ.3) CALL PYERRM(17,
+ & '(PYSLHA:) Unknown particle code in decay of KF ='
+ $ //CHKF)
+ IF(MERR.EQ.2) CALL PYERRM(17,
+ & '(PYSLHA:) Charge not conserved in decay of KF ='
+ $ //CHKF)
+ IF(MERR.EQ.1) CALL PYERRM(7,
+ & '(PYSLHA:) Kinematically unallowed decay of KF ='
+ $ //CHKF)
+ BRSUM=BRSUM+BRAT(IDA)
+ IF (MDME(IDA,1).GT.0) BROPN=BROPN+BRAT(IDA)
+ 460 CONTINUE
+C...Check branching ratio sum.
+ IF (BROPN.LE.0D0) THEN
+C...If zero, set stable.
+ WRITE(CHTMP,8500) BROPN
+ CALL PYERRM(7
+ & ,"(PYSLHA:) Effective BR sum for KF="//CHKF//' is '//
+ & CHTMP(9:16)//'. Changed to stable.')
+ PMAS(KC,2)=1D-6
+ MWID(KC)=0
+C...If BR's > 1, rescale.
+ ELSEIF (BRSUM.GT.(1D0+1D-6)) THEN
+ WRITE(CHTMP,8500) BRSUM
+ IF (BRSUM.GT.(1D0+1D-3)) CALL PYERRM(7
+ & ,"(PYSLHA:) Forced rescaling of BR's for KF="//CHKF//
+ & ' ; sum was'//CHTMP(9:16)//'.')
+ FAC=1D0/BRSUM
+ DO 470 IDA=MDCY(KC,2),MDCY(KC,2)+MDCY(KC,3)-1
+ IF(MDME(IDA,2).GT.80) GOTO 470
+ BRAT(IDA)=FAC*BRAT(IDA)
+ 470 CONTINUE
+ ELSEIF (BRSUM.LT.(1D0-1D-6)) THEN
+C...If BR's < 1, insert dummy mode for proper cross section rescaling.
+ WRITE(CHTMP,8500) BRSUM
+ IF (BRSUM.LT.(1D0-1D-3)) CALL PYERRM(7
+ & ,"(PYSLHA:) Sum of BR's for KF="//CHKF//' is '//
+ & CHTMP(9:16)//'. Dummy mode will be inserted.')
+C...Move table and insert dummy mode
+ DO 480 IDA=MDCY(KC,2),MDCY(KC,2)+MDCY(KC,3)-1
+ NDC=NDC+1
+ BRAT(NDC)=BRAT(IDA)
+ KFDP(NDC,1)=KFDP(IDA,1)
+ KFDP(NDC,2)=KFDP(IDA,2)
+ KFDP(NDC,3)=KFDP(IDA,3)
+ KFDP(NDC,4)=KFDP(IDA,4)
+ KFDP(NDC,5)=KFDP(IDA,5)
+ MDME(NDC,1)=MDME(IDA,1)
+ 480 CONTINUE
+ NDC=NDC+1
+ BRAT(NDC)=1D0-BRSUM
+ KFDP(NDC,1)=0
+ KFDP(NDC,2)=0
+ KFDP(NDC,3)=0
+ KFDP(NDC,4)=0
+ KFDP(NDC,5)=0
+ MDME(NDC,1)=0
+ BRSUM=1D0
+C...Update MDCY
+ MDCY(KC,3)=MDCY(KC,3)+1
+ MDCY(KC,2)=NDC-MDCY(KC,3)+1
+ ENDIF
+ 490 CONTINUE
+ ENDIF
+
+
+C...WRITE SPECTRUM ON SLHA FILE
+ ELSEIF(MUPDA.EQ.3) THEN
+C...If SPYTHIA or ISASUSY runtime was called for SUGRA, update PARMIN.
+ IF (IMSS(1).EQ.2.OR.IMSS(1).EQ.12) THEN
+ MODSEL(1)=1
+ PARMIN(1)=RMSS(8)
+ PARMIN(2)=RMSS(1)
+ PARMIN(3)=RMSS(5)
+ PARMIN(4)=SIGN(1D0,RMSS(4))
+ PARMIN(5)=RMSS(36)
+ ENDIF
+C...Write spectrum
+ WRITE(LFN,7000) 'SLHA MSSM spectrum'
+ WRITE(LFN,7000) 'Pythia 6.4: T. Sjostrand, S. Mrenna,'
+ & // ' P. Skands.'
+ WRITE(LFN,7010) 'MODSEL', 'Model selection'
+ WRITE(LFN,7110) 1, MODSEL(1)
+ WRITE(LFN,7010) 'MINPAR', 'Parameters for minimal model.'
+ IF (MODSEL(1).EQ.1) THEN
+ WRITE(LFN,7210) 1, PARMIN(1), 'm0'
+ WRITE(LFN,7210) 2, PARMIN(2), 'm12'
+ WRITE(LFN,7210) 3, PARMIN(3), 'tan(beta)'
+ WRITE(LFN,7210) 4, PARMIN(4), 'sign(mu)'
+ WRITE(LFN,7210) 5, PARMIN(5), 'a0'
+ ELSEIF(MODSEL(2).EQ.2) THEN
+ WRITE(LFN,7210) 1, PARMIN(1), 'Lambda'
+ WRITE(LFN,7210) 2, PARMIN(2), 'M'
+ WRITE(LFN,7210) 3, PARMIN(3), 'tan(beta)'
+ WRITE(LFN,7210) 4, PARMIN(4), 'sign(mu)'
+ WRITE(LFN,7210) 5, PARMIN(5), 'N5'
+ WRITE(LFN,7210) 6, PARMIN(6), 'c_grav'
+ ENDIF
+ WRITE(LFN,7000) ' '
+ WRITE(LFN,7010) 'MASS', 'Mass spectrum'
+ DO 500 I=1,36
+ KF=KFSUSY(I)
+ KC=PYCOMP(KF)
+ IF (KF.EQ.1000039.AND.MODSEL(1).NE.2) GOTO 500
+ KFSM=KF-KSUSY1
+ IF (KFSM.GE.22.AND.KFSM.LE.37) THEN
+ IF (KFSM.EQ.22) WRITE(LFN,7220) KF, SMZ(1), CHAF(KC,1)
+ IF (KFSM.EQ.23) WRITE(LFN,7220) KF, SMZ(2), CHAF(KC,1)
+ IF (KFSM.EQ.25) WRITE(LFN,7220) KF, SMZ(3), CHAF(KC,1)
+ IF (KFSM.EQ.35) WRITE(LFN,7220) KF, SMZ(4), CHAF(KC,1)
+ IF (KFSM.EQ.24) WRITE(LFN,7220) KF, SMW(1), CHAF(KC,1)
+ IF (KFSM.EQ.37) WRITE(LFN,7220) KF, SMW(2), CHAF(KC,1)
+ ELSE
+ WRITE(LFN,7220) KF, PMAS(KC,1), CHAF(KC,1)
+ ENDIF
+ 500 CONTINUE
+C...SUSY scale
+ RMSUSY=SQRT(PMAS(PYCOMP(KSUSY1+6),1)*PMAS(PYCOMP(KSUSY2+6),1))
+ WRITE(LFN,7020) 'HMIX',RMSUSY,'Higgs parameters'
+ WRITE(LFN,7210) 1, RMSS(4),'mu'
+ WRITE(LFN,7010) 'ALPHA',' '
+ WRITE(LFN,7210) 1, RMSS(18), 'alpha'
+ WRITE(LFN,7020) 'AU',RMSUSY
+ WRITE(LFN,7410) 3, 3, RMSS(16), 'A_t'
+ WRITE(LFN,7020) 'AD',RMSUSY
+ WRITE(LFN,7410) 3, 3, RMSS(15), 'A_b'
+ WRITE(LFN,7020) 'AE',RMSUSY
+ WRITE(LFN,7410) 3, 3, RMSS(17), 'A_tau'
+ WRITE(LFN,7010) 'STOPMIX','~t mixing matrix'
+ WRITE(LFN,7410) 1, 1, SFMIX(6,1)
+ WRITE(LFN,7410) 1, 2, SFMIX(6,2)
+ WRITE(LFN,7410) 2, 1, SFMIX(6,3)
+ WRITE(LFN,7410) 2, 2, SFMIX(6,4)
+ WRITE(LFN,7010) 'SBOTMIX','~b mixing matrix'
+ WRITE(LFN,7410) 1, 1, SFMIX(5,1)
+ WRITE(LFN,7410) 1, 2, SFMIX(5,2)
+ WRITE(LFN,7410) 2, 1, SFMIX(5,3)
+ WRITE(LFN,7410) 2, 2, SFMIX(5,4)
+ WRITE(LFN,7010) 'STAUMIX','~tau mixing matrix'
+ WRITE(LFN,7410) 1, 1, SFMIX(15,1)
+ WRITE(LFN,7410) 1, 2, SFMIX(15,2)
+ WRITE(LFN,7410) 2, 1, SFMIX(15,3)
+ WRITE(LFN,7410) 2, 2, SFMIX(15,4)
+ WRITE(LFN,7010) 'NMIX','~chi0 mixing matrix'
+ DO 520 I1=1,4
+ DO 510 I2=1,4
+ WRITE(LFN,7410) I1, I2, ZMIX(I1,I2)
+ 510 CONTINUE
+ 520 CONTINUE
+ WRITE(LFN,7010) 'UMIX','~chi^+ U mixing matrix'
+ DO 540 I1=1,2
+ DO 530 I2=1,2
+ WRITE(LFN,7410) I1, I2, UMIX(I1,I2)
+ 530 CONTINUE
+ 540 CONTINUE
+ WRITE(LFN,7010) 'VMIX','~chi^+ V mixing matrix'
+ DO 560 I1=1,2
+ DO 550 I2=1,2
+ WRITE(LFN,7410) I1, I2, VMIX(I1,I2)
+ 550 CONTINUE
+ 560 CONTINUE
+ WRITE(LFN,7010) 'SPINFO'
+ IF (IMSS(1).EQ.2) THEN
+ CPRO(1)='PYTHIA'
+ CVER(1)='6.4'
+ ELSEIF (IMSS(1).EQ.12) THEN
+ ISAVER=VISAJE()
+ CPRO(1)='ISASUSY'
+ CVER(1)=ISAVER(1:12)
+ ENDIF
+ WRITE(LFN,7310) 1, CPRO(1), 'Spectrum Calculator'
+ WRITE(LFN,7310) 2, CVER(1), 'Version number'
+ ENDIF
+
+C...Print user information about spectrum
+ IF (MUPDA.EQ.1.OR.MUPDA.EQ.3) THEN
+ IF (CPRO(MOD(MUPDA,2)).NE.' '.AND.CVER(MOD(MUPDA,2)).NE.' ')
+ & WRITE(MSTU(11),5030) CPRO(1), CVER(1)
+ IF (IMSS(4).EQ.3) WRITE(MSTU(11),5040)
+ IF (MUPDA.EQ.1) THEN
+ WRITE(MSTU(11),5020) LFN
+ ELSE
+ WRITE(MSTU(11),5010) LFN
+ ENDIF
+
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),5500) 'Pole masses'
+ WRITE(MSTU(11),5700) (RMFUN(KSUSY1+IP),IP=1,6)
+ $ ,(RMFUN(KSUSY2+IP),IP=1,6)
+ WRITE(MSTU(11),5800) (RMFUN(KSUSY1+IP),IP=11,16)
+ $ ,(RMFUN(KSUSY2+IP),IP=11,16)
+ IF (IMSS(13).EQ.0) THEN
+ WRITE(MSTU(11),5900) RMFUN(KSUSY1+21),RMFUN(KSUSY1+22)
+ $ ,RMFUN(KSUSY1+23),RMFUN(KSUSY1+25),RMFUN(KSUSY1+35),
+ $ RMFUN(KSUSY1+24),RMFUN(KSUSY1+37)
+ WRITE(MSTU(11),6000) CHAF(25,1),CHAF(35,1),CHAF(36,1),
+ & CHAF(37,1), ' ', ' ',' ',' ',
+ & RMFUN(25), RMFUN(35), RMFUN(36), RMFUN(37)
+ ELSEIF (IMSS(13).EQ.1) THEN
+ KF1=KSUSY1+21
+ KF2=KSUSY1+22
+ KF3=KSUSY1+23
+ KF4=KSUSY1+25
+ KF5=KSUSY1+35
+ KF6=KSUSY1+45
+ KF7=KSUSY1+24
+ KF8=KSUSY1+37
+ WRITE(MSTU(11),6000) CHAF(PYCOMP(KF1),1),CHAF(PYCOMP(KF2),1),
+ & CHAF(PYCOMP(KF3),1),CHAF(PYCOMP(KF4),1),
+ & CHAF(PYCOMP(KF5),1),CHAF(PYCOMP(KF6),1),
+ & CHAF(PYCOMP(KF7),1),CHAF(PYCOMP(KF8),1),
+ & RMFUN(KF1),RMFUN(KF2),RMFUN(KF3),RMFUN(KF4),
+ & RMFUN(KF5),RMFUN(KF6),RMFUN(KF7),RMFUN(KF8)
+ WRITE(MSTU(11),6000) CHAF(25,1), CHAF(35,1), CHAF(45,1),
+ & CHAF(36,1), CHAF(46,1), CHAF(37,1),' ',' ',
+ & RMFUN(25), RMFUN(35), RMFUN(45), RMFUN(36), RMFUN(46),
+ & RMFUN(37)
+ ENDIF
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),5500) 'Mixing structure'
+ WRITE(MSTU(11),6100) ((ZMIX(I,J), J=1,4),I=1,4)
+ WRITE(MSTU(11),6200) (UMIX(1,J), J=1,2),(VMIX(1,J),J=1,2)
+ & ,(UMIX(2,J), J=1,2),(VMIX(2,J),J=1,2)
+ WRITE(MSTU(11),6300) (SFMIX(5,J), J=1,2),(SFMIX(6,J),J=1,2)
+ & ,(SFMIX(15,J), J=1,2),(SFMIX(5,J),J=3,4),(SFMIX(6,J), J=3,4
+ & ),(SFMIX(15,J),J=3,4)
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),5500) 'Couplings'
+ WRITE(MSTU(11),6400) RMSS(15),RMSS(16),RMSS(17)
+ WRITE(MSTU(11),6450) RMSS(18), RMSS(5), RMSS(4)
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),6500)
+
+ ENDIF
+
+C...Only rewind when reading
+ IF (MUPDA.LE.2.OR.MUPDA.EQ.5) REWIND(LFN)
+
+ 9999 RETURN
+
+C...Serious error catching
+ 580 write(*,*) '* (PYSLHA:) read BLOCK error on line',NLINE
+ write(*,*) CHINL(1:80)
+ CALL PYSTOP(106)
+ 590 WRITE(*,*) '* (PYSLHA:) read DECAY error on line',NLINE
+ WRITE(*,*) CHINL(1:72)
+ CALL PYSTOP(106)
+ 600 WRITE(*,*) '* (PYSLHA:) read NDA error on line',NLINE
+ WRITE(*,*) CHINL(1:80)
+ CALL PYSTOP(106)
+ 610 WRITE(*,*) '* (PYSLHA:) decay daughter read error on line',NLINE
+ WRITE(*,*) CHINL(1:80)
+ 620 WRITE(*,*) '* (PYSLHA:) read Q error in BLOCK ',CHBLCK
+ CALL PYSTOP(106)
+ 630 WRITE(*,*) '* (PYSLHA:) read error in line ',NLINE,':'
+ WRITE(*,*) CHINL(1:80)
+ CALL PYSTOP(106)
+
+ 8300 FORMAT(I9)
+ 8500 FORMAT(F16.5)
+
+C...Formats for user information printout.
+ 5000 FORMAT(1x,18('*'),1x,'PYSLHA v1.10: SUSY/BSM SPECTRUM '
+ & ,'INTERFACE',1x,17('*')/1x,'*',2x
+ & ,'PYSLHA: Last Change',1x,A,1x,'-',1x,'P.Z. Skands')
+ 5010 FORMAT(1x,'*',3x,'Wrote spectrum file on unit: ',I3)
+ 5020 FORMAT(1x,'*',3x,'Read spectrum file on unit: ',I3)
+ 5030 FORMAT(1x,'*',3x,'Spectrum Calculator was: ',A,' version ',A)
+ 5040 FORMAT(1x,'*',3x,'Higgs sector corrected with FeynHiggs')
+ 5100 FORMAT(1x,'*',1x,'Model parameters:'/1x,'*',1x,'----------------')
+ 5200 FORMAT(1x,'*',1x,3x,'M_0',6x,'M_1/2',5x,'A_0',3x,'Tan(beta)',
+ & 3x,'Sgn(mu)',3x,'M_t'/1x,'*',1x,4(F8.2,1x),I8,2x,F8.2)
+ 5300 FORMAT(1x,'*'/1x,'*',1x,'Model spectrum :'/1x,'*',1x
+ & ,'----------------')
+ 5400 FORMAT(1x,'*',1x,A)
+ 5500 FORMAT(1x,'*',1x,A,':')
+ 5600 FORMAT(1x,'*',2x,2x,'M_GUT',2x,2x,'g_GUT',2x,1x,'alpha_GUT'/
+ & 1x,'*',2x,1P,2(1x,E8.2),2x,E8.2)
+ 5700 FORMAT(1x,'*',4x,1x,'~d',2x,1x,4x,'~u',2x,1x,4x,'~s',2x,1x,
+ & 4x,'~c',2x,1x,4x,'~b(12)',1x,1x,1x,'~t(12)'/1x,'*',2x,'L',1x
+ & ,6(F8.2,1x)/1x,'*',2x,'R',1x,6(F8.2,1x))
+ 5800 FORMAT(1x,'*'/1x,'*',4x,1x,'~e',2x,1x,4x,'~nu_e',2x,1x,1x,'~mu',2x
+ & ,1x,3x,'~nu_mu',2x,1x,'~tau(12)',1x,'~nu_tau'/1x,'*',2x
+ & ,'L',1x,6(F8.2,1x)/1x,'*',2x,'R',1x,6(F8.2,1x))
+ 5900 FORMAT(1x,'*'/1x,'*',4x,4x,'~g',2x,1x,1x,'~chi_10',1x,1x,'~chi_20'
+ & ,1x,1x,'~chi_30',1x,1x,'~chi_40',1x,1x,'~chi_1+',1x
+ & ,1x,'~chi_2+'/1x,'*',3x,1x,7(F8.2,1x))
+ 6000 FORMAT(1x,'*'/1x,'*',3x,1x,8(1x,A7,1x)/1x,'*',3x,1x,8(F8.2,1x))
+ 6100 FORMAT(1x,'*',11x,'|',3x,'~B',3x,'|',2x,'~W_3',2x,'|',2x
+ & ,'~H_1',2x,'|',2x,'~H_2',2x,'|'/1x,'*',3x,'~chi_10',1x,4('|'
+ & ,1x,F6.3,1x),'|'/1x,'*',3x,'~chi_20',1x,4('|'
+ & ,1x,F6.3,1x),'|'/1x,'*',3x,'~chi_30',1x,4('|'
+ & ,1x,F6.3,1x),'|'/1x,'*',3x,'~chi_40',1x,4('|'
+ & ,1x,F6.3,1x),'|')
+ 6200 FORMAT(1x,'*'/1x,'*',6x,'L',4x,'|',3x,'~W',3x,'|',3x,'~H',3x,'|'
+ & ,12x,'R',4x,'|',3x,'~W',3x,'|',3x,'~H',3x,'|'/1x,'*',3x
+ & ,'~chi_1+',1x,2('|',1x,F6.3,1x),'|',9x,'~chi_1+',1x,2('|',1x
+ & ,F6.3,1x),'|'/1x,'*',3x,'~chi_2+',1x,2('|',1x,F6.3,1x),'|',9x
+ & ,'~chi_2+',1x,2('|',1x,F6.3,1x),'|')
+ 6300 FORMAT(1x,'*'/1x,'*',8x,'|',2x,'~b_L',2x,'|',2x,'~b_R',2x,'|',8x
+ & ,'|',2x,'~t_L',2x,'|',2x,'~t_R',2x,'|',10x
+ & ,'|',1x,'~tau_L',1x,'|',1x,'~tau_R',1x,'|'/
+ & 1x,'*',3x,'~b_1',1x,2('|',1x,F6.3,1x),'|',3x,'~t_1',1x,2('|'
+ & ,1x,F6.3,1x),'|',3x,'~tau_1',1x,2('|',1x,F6.3,1x),'|'/
+ & 1x,'*',3x,'~b_2',1x,2('|',1x,F6.3,1x),'|',3x,'~t_2',1x,2('|'
+ & ,1x,F6.3,1x),'|',3x,'~tau_2',1x,2('|',1x,F6.3,1x),'|')
+ 6400 FORMAT(1x,'*',3x,' A_b = ',F8.2,4x,' A_t = ',F8.2,4x
+ & ,'A_tau = ',F8.2)
+ 6450 FORMAT(1x,'*',3x,'alpha = ',F8.2,4x,'tan(beta) = ',F8.2,4x
+ & ,' mu = ',F8.2)
+ 6500 FORMAT(1x,32('*'),1x,'END OF PYSLHA',1x,31('*'))
+
+C...Format to use for comments
+ 7000 FORMAT('# ',A)
+C...Format to use for block statements
+ 7010 FORMAT('Block',1x,A,3x,'#',1x,A)
+ 7020 FORMAT('Block',1x,A,1x,'Q=',1P,E16.8,0P,3x,'#',1x,A)
+C...Indexed Int
+ 7110 FORMAT(1x,I4,1x,I4,3x,'#')
+C...Non-Indexed Double
+ 7200 FORMAT(9x,1P,E16.8,0P,3x,'#',1x,A)
+C...Indexed Double
+ 7210 FORMAT(1x,I4,3x,1P,E16.8,0P,3x,'#',1x,A)
+C...Long Indexed Double (PDG + double)
+ 7220 FORMAT(1x,I9,3x,1P,E16.8,0P,3x,'#',1x,A)
+C...Indexed Char(12)
+ 7310 FORMAT(1x,I4,3x,A12,3x,'#',1x,A)
+C...Single matrix
+ 7410 FORMAT(1x,I2,1x,I2,3x,1P,E16.8,0P,3x,'#',1x,A)
+C...Double Matrix
+ 7420 FORMAT(1x,I2,1x,I2,3x,1P,E16.8,3x,E16.8,0P,3x,'#',1x,A)
+C...Write Decay Table
+ 7500 FORMAT('Decay',1x,I9,1x,'WIDTH=',1P,E16.8,0P,3x,'#',1x,A)
+ 7510 FORMAT(4x,I5,1x,1P,E16.8,0P,3x,I2,3x,'IDA=',1x,5(1x,I9),
+ & 3x,'#',1x,A)
+
+ END
+
+
+C*********************************************************************
+
+C...PYAPPS
+C...Uses approximate analytical formulae to determine the full set of
+C...MSSM parameters from SUGRA input.
+C...See M. Drees and S.P. Martin, hep-ph/9504124
+
+ SUBROUTINE PYAPPS
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/
+
+ WRITE(MSTU(11),*) '(PYAPPS:) approximate mSUGRA relations'//
+ &' not intended for serious physics studies'
+ IMSS(5)=0
+ IMSS(8)=0
+ XMT=PMAS(6,1)
+ XMZ2=PMAS(23,1)**2
+ XMW2=PMAS(24,1)**2
+ TANB=RMSS(5)
+ BETA=ATAN(TANB)
+ XW=PARU(102)
+ XMG=RMSS(1)
+ XMG2=XMG*XMG
+ XM0=RMSS(8)
+ XM02=XM0*XM0
+C...Temporary sign change for AT. Others unchanged.
+ AT=-RMSS(16)
+ RMSS(15)=RMSS(16)
+ RMSS(17)=RMSS(16)
+ SINB=TANB/SQRT(TANB**2+1D0)
+ COSB=SINB/TANB
+
+ DTERM=XMZ2*COS(2D0*BETA)
+ XMER=SQRT(XM02+0.15D0*XMG2-XW*DTERM)
+ XMEL=SQRT(XM02+0.52D0*XMG2-(0.5D0-XW)*DTERM)
+ RMSS(6)=XMEL
+ RMSS(7)=XMER
+ XMUR=SQRT(PYRNMQ(2,2D0/3D0*XW*DTERM))
+ XMDR=SQRT(PYRNMQ(3,-1D0/3D0*XW*DTERM))
+ XMUL=SQRT(PYRNMQ(1,(0.5D0-2D0/3D0*XW)*DTERM))
+ XMDL=SQRT(PYRNMQ(1,-(0.5D0-1D0/3D0*XW)*DTERM))
+ DO 100 I=1,5,2
+ PMAS(PYCOMP(KSUSY1+I),1)=XMDL
+ PMAS(PYCOMP(KSUSY2+I),1)=XMDR
+ PMAS(PYCOMP(KSUSY1+I+1),1)=XMUL
+ PMAS(PYCOMP(KSUSY2+I+1),1)=XMUR
+ 100 CONTINUE
+ XARG=XMEL**2-XMW2*ABS(COS(2D0*BETA))
+ IF(XARG.LT.0D0) THEN
+ WRITE(MSTU(11),*) ' SNEUTRINO MASS IS NEGATIVE'//
+ & ' FROM THE SUM RULE. '
+ WRITE(MSTU(11),*) ' TRY A SMALLER VALUE OF TAN(BETA). '
+ RETURN
+ ELSE
+ XARG=SQRT(XARG)
+ ENDIF
+ DO 110 I=11,15,2
+ PMAS(PYCOMP(KSUSY1+I),1)=XMEL
+ PMAS(PYCOMP(KSUSY2+I),1)=XMER
+ PMAS(PYCOMP(KSUSY1+I+1),1)=XARG
+ PMAS(PYCOMP(KSUSY2+I+1),1)=9999D0
+ 110 CONTINUE
+ RMT=PYMRUN(6,PMAS(6,1)**2)
+ XTOP=(RMT/150D0/SINB)**2*(.9D0*XM02+2.1D0*XMG2+
+ &(1D0-(RMT/190D0/SINB)**3)*(.24D0*AT**2+AT*XMG))
+ RMB=PYMRUN(5,PMAS(6,1)**2)
+ XBOT=(RMB/150D0/COSB)**2*(.9D0*XM02+2.1D0*XMG2+
+ &(1D0-(RMB/190D0/COSB)**3)*(.24D0*AT**2+AT*XMG))
+ XTAU=1D-4/COSB**2*(XM02+0.15D0*XMG2+AT**2/3D0)
+ ATP=AT*(1D0-(RMT/190D0/SINB)**2)+XMG*(3.47D0-1.9D0*(RMT/190D0/
+ &SINB)**2)
+ RMSS(16)=-ATP
+ XMU2=-.5D0*XMZ2+(SINB**2*(XM02+.52D0*XMG2-XTOP)-
+ &COSB**2*(XM02+.52D0*XMG2-XBOT-XTAU/3D0))/(COSB**2-SINB**2)
+ XMA2=2D0*(XM02+.52D0*XMG2+XMU2)-XTOP-XBOT-XTAU/3D0
+ XMU=SIGN(SQRT(XMU2),RMSS(4))
+ RMSS(4)=XMU
+ IF(XMA2.GT.0D0) THEN
+ RMSS(19)=SQRT(XMA2)
+ ELSE
+ WRITE(MSTU(11),*) ' PYAPPS:: PSEUDOSCALAR MASS**2 < 0 '
+ CALL PYSTOP(102)
+ ENDIF
+ ARG=XM02+0.15D0*XMG2-2D0*XTAU/3D0-XW*DTERM
+ IF(ARG.GT.0D0) THEN
+ RMSS(14)=SQRT(ARG)
+ ELSE
+ WRITE(MSTU(11),*) ' PYAPPS:: RIGHT STAU MASS**2 < 0 '
+ CALL PYSTOP(102)
+ ENDIF
+ ARG=XM02+0.52D0*XMG2-XTAU/3D0-(0.5D0-XW)*DTERM
+ IF(ARG.GT.0D0) THEN
+ RMSS(13)=SQRT(ARG)
+ ELSE
+ WRITE(MSTU(11),*) ' PYAPPS:: LEFT STAU MASS**2 < 0 '
+ CALL PYSTOP(102)
+ ENDIF
+ ARG=PYRNMQ(1,-(XBOT+XTOP)/3D0)
+ IF(ARG.GT.0D0) THEN
+ RMSS(10)=SQRT(ARG)
+ ELSE
+ RMSS(10)=-SQRT(-ARG)
+ ENDIF
+ ARG=PYRNMQ(2,-2D0*XTOP/3D0)
+ IF(ARG.GT.0D0) THEN
+ RMSS(12)=SQRT(ARG)
+ ELSE
+ RMSS(12)=-SQRT(-ARG)
+ ENDIF
+ ARG=PYRNMQ(3,-2D0*XBOT/3D0)
+ IF(ARG.GT.0D0) THEN
+ RMSS(11)=SQRT(ARG)
+ ELSE
+ RMSS(11)=-SQRT(-ARG)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSUGI
+C...Interface to ISASUSY version 7.71.
+C...Warning: this interface should not be used with earlier versions
+C...of ISASUSY, since common block incompatibilities may then arise.
+C...Calls SUGRA (in ISAJET) to perform RGE evolution.
+C...Then converts to Gunion-Haber conventions.
+
+ SUBROUTINE PYSUGI
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+
+ INTEGER PYK,PYCHGE,PYCOMP
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+
+C...Date of Change
+ CHARACTER DOC*11
+ PARAMETER (DOC='01 May 2006')
+
+C...ISASUGRA Input:
+ REAL MZERO,MHLF,AZERO,TANB,SGNMU,MTOP
+C...XISAIN contains the MSSMi inputs in natural order.
+ COMMON /SUGXIN/ XISAIN(24),XSUGIN(7),XGMIN(14),XNRIN(4),
+ $XAMIN(7)
+ REAL XISAIN,XSUGIN,XGMIN,XNRIN,XAMIN
+ SAVE /SUGXIN/
+C...ISASUGRA Output
+ CHARACTER*40 ISAVER,VISAJE
+ REAL SUPER
+ COMMON /SSPAR/ SUPER(72)
+ COMMON /SUGMG/ MSS(32),GSS(31),MGUTSS,GGUTSS,AGUTSS,FTGUT,
+ $FBGUT,FTAGUT,FNGUT
+ REAL MSS,GSS,MGUTSS,GGUTSS,AGUTSS,FTGUT,FBGUT,FTAGUT,FNGUT
+ COMMON /SUGPAS/ XTANB,MSUSY,AMT,MGUT,MU,G2,GP,V,VP,XW,
+ $A1MZ,A2MZ,ASMZ,FTAMZ,FBMZ,B,SIN2B,FTMT,G3MT,VEV,HIGFRZ,
+ $FNMZ,AMNRMJ,NOGOOD,IAL3UN,ITACHY,MHPNEG,ASM3,
+ $VUMT,VDMT,ASMTP,ASMSS,M3Q
+ REAL XTANB,MSUSY,AMT,MGUT,MU,G2,GP,V,VP,XW,
+ $A1MZ,A2MZ,ASMZ,FTAMZ,FBMZ,B,SIN2B,FTMT,G3MT,VEV,HIGFRZ,
+ $FNMZ,AMNRMJ,ASM3,VUMT,VDMT,ASMTP,ASMSS,M3Q
+ INTEGER NOGOOD,IAL3UN,ITACHY,MHPNEG
+ INTEGER IALLOW
+ SAVE /SUGMG/,/SSPAR/
+C SUPER: Filled by ISASUGRA.
+C SUPER(1) = mass of ~g
+C SUPER(2:17) = mass of ~u_L,~u_R,~d_L,~d_R,~s_L,~s_R,~c_L,~c_R,~b_L
+C ,~b_R,~b_1,~b_2,~t_L,~t_R,~t_1,~t_2
+C SUPER(18:25) = mass of ~e_L,~e_R,~mu_L,~mu_R,~tau_L,~tau_R,~tau_1
+C ,~tau_2
+C SUPER(26:28) = mass of ~nu_e,~nu_mu,~nu_tau
+C SUPER(29) = Higgsino mass = - mu
+C SUPER(30) = ratio v2/v1 of vev's
+C SUPER(31:34) = Signed neutralino masses
+C SUPER(35:50) = Neutralino mixing matrix
+C SUPER(51:52) = Signed chargino masses
+C SUPER(53:54) = Chargino left, right mixing angles
+C SUPER(55:58) = mass of h0, H0, A0, H+
+C SUPER(59) = Higgs mixing angle alpha
+C SUPER(60:65) = A_t, theta_t, A_b, theta_b, A_tau, theta_tau
+C SUPER(66) = Gravitino mass
+C SUPER(67:69) = Top,Bottom, and Tau masses at MSUSY (not used)
+C SUPER(70) = b-Yukawa at mA scale (not used)
+C SUPER(71:72) = H_u, H_d vev's at MSUSY (not used)
+C GSS: Filled by ISASUGRA
+C GSS( 1) = g_1 GSS( 2) = g_2 GSS( 3) = g_3
+C GSS( 4) = y_tau GSS( 5) = y_b GSS( 6) = y_t
+C GSS( 7) = M_1 GSS( 8) = M_2 GSS( 9) = M_3
+C GSS(10) = A_tau GSS(11) = A_b GSS(12) = A_t
+C GSS(13) = M_h12 GSS(14) = M_h22 GSS(15) = M_er2
+C GSS(16) = M_el2 GSS(17) = M_dnr2 GSS(18) = M_upr2
+C GSS(19) = M_upl2 GSS(20) = M_taur2 GSS(21) = M_taul2
+C GSS(22) = M_btr2 GSS(23) = M_tpr2 GSS(24) = M_tpl2
+C GSS(25) = mu GSS(26) = B GSS(27) = Y_N
+C GSS(28) = M_nr GSS(29) = A_n GSS(30) = log(vdq)
+C GSS(31) = log(vuq)
+C MSS: Filled by ISASUGRA
+C MSS( 1) = glss MSS( 2) = upl MSS( 3) = upr
+C MSS( 4) = dnl MSS( 5) = dnr MSS( 6) = stl
+C MSS( 7) = str MSS( 8) = chl MSS( 9) = chr
+C MSS(10) = b1 MSS(11) = b2 MSS(12) = t1
+C MSS(13) = t2 MSS(14) = nuel MSS(15) = numl
+C MSS(16) = nutl MSS(17) = el- MSS(18) = er-
+C MSS(19) = mul- MSS(20) = mur- MSS(21) = tau1
+C MSS(22) = tau2 MSS(23) = z1ss MSS(24) = z2ss
+C MSS(25) = z3ss MSS(26) = z4ss MSS(27) = w1ss
+C MSS(28) = w2ss MSS(29) = hl0 MSS(30) = hh0
+C MSS(31) = ha0 MSS(32) = h+
+C Unification, filled by ISASUGRA if applicable.
+C MGUTSS = M_GUT GGUTSS = g_GUT AGUTSS = alpha_GUTC
+
+C...SPYTHIA Input/Output
+ INTEGER IMSS
+ DOUBLE PRECISION RMSS
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+C...SLHA Input/Output
+ COMMON/PYLH3P/MODSEL(200),PARMIN(100),PAREXT(200),RMSOFT(0:100),
+ & AU(3,3),AD(3,3),AE(3,3)
+C...PYTHIA common blocks
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+
+ SAVE /PYMSSM/,/PYSSMT/,/PYLH3P/,/PYDAT1/,/PYPARS/,/PYDAT2/
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+ INTEGER IMODEL
+ REAL M0,MHF,A0,MT
+ CHARACTER*20 CHMOD(5)
+ CHARACTER*32 FNAME
+
+ COMMON /SUGNU/ XNUSUG(18)
+ REAL XNUSUG
+ SAVE /SUGNU/
+
+ DATA CHMOD/'mSUGRA','mGMSB','non-universal SUGRA',
+ & 'truly unified SUGRA', 'non-minimal GMSB'/
+
+C...Start by checking for incompatibilities/inconsistencies:
+ DO 100 ICHK=2,9
+ IF (ICHK.NE.8.AND.ICHK.NE.4.AND.IMSS(ICHK).NE.0) THEN
+ WRITE (MSTU(11),*) '(PYSUGI:) IMSS(',ICHK,')=',IMSS(ICHK)
+ & ,' option not used by PYSUGI'
+ ENDIF
+ 100 CONTINUE
+C...ISAJET works with REAL numbers.
+ MZERO=REAL(RMSS(8))
+ MHLF=REAL(RMSS(1))
+ AZERO=REAL(RMSS(16))
+ TANB=REAL(RMSS(5))
+ SGNMU=REAL(RMSS(4))
+ MTOP=REAL(PMAS(6,1))
+ IMODEL=0
+ IF (IMSS(1).EQ.12) THEN
+ IMODEL=1
+ GOTO 130
+ ELSEIF(IMSS(1).EQ.13) THEN
+C...Read from isajet par file in IMSS(20)
+ LFN=IMSS(20)
+C...STOP IF LFN IS ZERO (i.e. if no LFN was given).
+ IF (LFN.EQ.0) THEN
+ WRITE(MSTU(11),*) '(PYSUGI:) No valid unit given in IMSS(20)'
+ GOTO 9999
+ ENDIF
+ WRITE(MSTU(11),*) 'READING SUSY MODEL FROM FILE...'
+CMrenna change to allow any susy model
+ WRITE(MSTU(11),*) 'ENTER 1 for mSUGRA:'
+ WRITE(MSTU(11),*) 'ENTER 2 for mGMSB:'
+ WRITE(MSTU(11),*) 'ENTER 3 for non-universal SUGRA:'
+ WRITE(MSTU(11),*) 'ENTER 4 for SUGRA with truly unified'//
+ & ' gauge couplings:'
+ WRITE(MSTU(11),*) 'ENTER 5 for non-minimal GMSB:'
+ READ(LFN,*) IMODEL
+ IF (IMODEL.EQ.4) THEN
+ IAL3UN=1
+ IMODEL=1
+ ENDIF
+ IF (IMODEL.EQ.1.OR.IMODEL.EQ.3) THEN
+ WRITE(MSTU(11),*) 'ENTER M_0, M_(1/2), A_0, tan(beta),'
+ & //' sgn(mu), M_t:'
+ READ(LFN,*) M0,MHF,A0,TANB,SGNMU,MT
+ IF (IMODEL.EQ.3) THEN
+ IMODEL=1
+ 110 WRITE(MSTU(11),*) ' ENTER 1,...,5 for NUSUGx keyword;'
+ & //' 0 to continue:'
+ WRITE(MSTU(11),*) ' NUSUG1 = GUT scale gaugino masses'
+ WRITE(MSTU(11),*) ' NUSUG2 = GUT scale A terms'
+ WRITE(MSTU(11),*) ' NUSUG3 = GUT scale Higgs masses'
+ WRITE(MSTU(11),*) ' NUSUG4 = GUT scale 1st/2nd'
+ & //' generation masses'
+ WRITE(MSTU(11),*)
+ & ' NUSUG5 = GUT scale 3rd generation masses'
+ READ(LFN,*) INUSUG
+ IF (INUSUG.EQ.0) THEN
+ GOTO 120
+ ELSEIF (INUSUG.EQ.1) THEN
+ WRITE(MSTU(11),*) 'Enter GUT scale M_1, M_2, M_3:'
+ READ(LFN,*) XNUSUG(1),XNUSUG(2),XNUSUG(3)
+ IF (XNUSUG(3).LE.0.) THEN
+ WRITE(MSTU(11),*) ' NEGATIVE M_3 IS NOT ALLOWED'
+ CALL PYSTOP(109)
+ END IF
+ ELSEIF (INUSUG.EQ.2) THEN
+ WRITE(MSTU(11),*) 'Enter GUT scale A_t, A_b, A_tau:'
+ READ(LFN,*) XNUSUG(6),XNUSUG(5),XNUSUG(4)
+ ELSEIF (INUSUG.EQ.3) THEN
+ WRITE(MSTU(11),*) 'Enter GUT scale m_Hd, m_Hu:'
+ READ(LFN,*) XNUSUG(7),XNUSUG(8)
+ ELSEIF (INUSUG.EQ.4) THEN
+ WRITE(MSTU(11),*) 'Enter GUT scale M(ul), M(dr),'
+ & //' M(ur), M(el), M(er):'
+ READ(LFN,*) XNUSUG(13),XNUSUG(11),XNUSUG(12),
+ & XNUSUG(10),XNUSUG(9)
+ ELSEIF (INUSUG.EQ.5) THEN
+ WRITE(MSTU(11),*) 'Enter GUT scale M(tl), M(br), M(tr),'
+ & //' M(Ll), M(Lr):'
+ READ(LFN,*) XNUSUG(18),XNUSUG(16),XNUSUG(17),
+ & XNUSUG(15),XNUSUG(14)
+ ENDIF
+ GOTO 110
+ ENDIF
+ ELSEIF (IMODEL.EQ.2.OR.IMODEL.EQ.5) THEN
+ IMSS(11)=1
+ WRITE(MSTU(11),*) 'ENTER Lambda, M_mes, N_5, tan(beta),'
+ & ,' sgn(mu), M_t, C_gv:'
+ READ(LFN,*) M0,MHF,A0,TANB,SGNMU,MT,XCMGV
+ XGMIN(7)=XCMGV
+ XGMIN(8)=1.
+C...Planck scale: AMPL = 2.4 E18 GeV = {8 pi G_newton}^{1/2}
+ AMPL=2.4D18
+ AMGVSS=M0*MHF*XCMGV/SQRT(3D0)/AMPL
+ IF (IMODEL.EQ.5) THEN
+ IMODEL=2
+ WRITE(MSTU(11),*) 'Rsl = factor multiplying gaugino'
+ & ,' masses at M_mes'
+ WRITE(MSTU(11),*) 'dmH_d2, dmH_u2 = Higgs mass**2'
+ & ,' shifts at M_mes'
+ WRITE(MSTU(11),*) 'd_Y = mass**2 shifts proportional to',
+ & ' Y at M_mes'
+ WRITE(MSTU(11),*) 'n5_1,n5_2,n5_3 = n5 values for U(1),'
+ & ,'SU(2),SU(3)'
+ WRITE(MSTU(11),*) 'ENTER Rsl, dmH_d2, dmH_u2, d_Y, n5_1,'
+ & ,' n5_2, n5_3'
+ READ(LFN,*) XGMIN(8),XGMIN(9),XGMIN(10),XGMIN(11),XGMIN(12),
+ $ XGMIN(13),XGMIN(14)
+ ENDIF
+ ELSE
+ WRITE(MSTU(11),*) 'Invalid model choice.'
+ GOTO 9999
+ ENDIF
+ ENDIF
+
+ 120 MZERO=M0
+ MHLF=MHF
+ AZERO=A0
+C TANB=REAL(RMSS(5))
+C SGNMU=REAL(RMSS(4))
+ MTOP=MT
+
+C...Initialize MSSM parameter array
+ 130 DO 140 IPAR=1,72
+ SUPER(IPAR)=0.0
+ 140 CONTINUE
+C...Call ISASUGRA
+ CALL SUGRA(MZERO,MHLF,AZERO,TANB,SGNMU,MTOP,IMODEL)
+C...Check whether ISASUSY thought the model was OK.
+ IF (NOGOOD.NE.0) THEN
+ IF (NOGOOD.EQ.1) CALL PYERRM(26
+ & ,'(PYSUGI:) SUSY parameters give tachyonic particles.')
+ IF (NOGOOD.EQ.2) CALL PYERRM(26
+ & ,'(PYSUGI:) SUSY parameters give no EWSB.')
+ IF (NOGOOD.EQ.3) CALL PYERRM(26
+ & ,'(PYSUGI:) SUSY parameters give m(A0) < 0.')
+ IF (NOGOOD.EQ.4) CALL PYERRM(26
+ & ,'(PYSUGI:) SUSY parameters give Yukawa > 100.')
+ IF (NOGOOD.EQ.7) CALL PYERRM(26
+ & ,'(PYSUGI:) SUSY parameters give x_T EWSB bad.')
+ IF (NOGOOD.EQ.8) CALL PYERRM(26
+ & ,'(PYSUGI:) SUSY parameters give m(h0)2 < 0.')
+C...Give warning, but don't stop, if LSP not ~chi_10.
+ IF (NOGOOD.EQ.5) CALL PYERRM(16
+ & ,'(PYSUGI:) SUSY parameters give ~chi_10 not LSP.')
+ ENDIF
+C...Warn about possible GUT scale tachyons.
+ IF (ITACHY.NE.0) CALL PYERRM(16,
+ & '(PYSUGI:) Tachyonic sleptons at GUT scale.')
+C...Finalize spectrum (last iteration)
+C...(Thanks to A. Raklev for pointing this out.)
+C...NB: SSMSSM also calculates decays, but these are not used by Pythia.
+ CALL SSMSSM(XISAIN(1),XISAIN(2),XISAIN(3),
+ $ XISAIN(4),XISAIN(5),XISAIN(6),XISAIN(7),XISAIN(8),XISAIN(9),
+ $ XISAIN(10),XISAIN(11),XISAIN(12),XISAIN(13),XISAIN(14),
+ $ XISAIN(15),XISAIN(16),XISAIN(17),XISAIN(18),XISAIN(19),
+ $ XISAIN(20),XISAIN(21),XISAIN(22),XISAIN(23),XISAIN(24),
+ $ MTOP,IALLOW,1)
+
+C...M1, M2, M3.
+ RMSS(1)=dble(GSS(7))
+ RMSS(2)=dble(GSS(8))
+ RMSS(3)=dble(GSS(9))
+ RMSOFT(1)=dble(GSS(7))
+ RMSOFT(2)=dble(GSS(8))
+ RMSOFT(3)=dble(GSS(9))
+C...Mu = - Higgsino mass.
+ RMSS(4)=-SUPER(29)
+ RMSS(5)=TANB
+C...Slepton and squark masses. 2 first generations.
+ RMSS(6)=0.5*(SUPER(18)+SUPER(20))
+ RMSS(7)=0.5*(SUPER(19)+SUPER(21))
+ RMSS(8)=0.25*(SUPER(2)+SUPER(4)+SUPER(6)+SUPER(8))
+ RMSS(9)=0.25*(SUPER(3)+SUPER(5)+SUPER(7)+SUPER(9))
+C...Third generation.
+ RMSS(10)=0.5*(SUPER(14)+SUPER(10))
+ RMSS(11)=SUPER(11)
+ RMSS(12)=SUPER(15)
+ RMSS(13)=SUPER(22)
+ RMSS(14)=SUPER(23)
+C...SLHA: store exact soft spectrum in RMSOFT
+ RMSOFT(31)=SUPER(18)
+ RMSOFT(32)=SUPER(20)
+ RMSOFT(33)=SUPER(22)
+ RMSOFT(34)=SUPER(19)
+ RMSOFT(35)=SUPER(21)
+ RMSOFT(36)=SUPER(23)
+ RMSOFT(41)=0.5D0*(SUPER(2)+SUPER(4))
+ RMSOFT(42)=0.5D0*(SUPER(6)+SUPER(8))
+ RMSOFT(43)=0.5D0*(SUPER(10)+SUPER(14))
+ RMSOFT(44)=SUPER(3)
+ RMSOFT(45)=SUPER(9)
+ RMSOFT(46)=SUPER(15)
+ RMSOFT(47)=SUPER(5)
+ RMSOFT(48)=SUPER(7)
+ RMSOFT(49)=SUPER(11)
+
+C...~b, ~t, and ~tau trilinear couplings and mixing angles.
+ RMSS(15)=SUPER(62)
+ RMSS(16)=SUPER(60)
+ RMSS(17)=SUPER(64)
+ RMSS(26)=SUPER(63)
+ RMSS(27)=SUPER(61)
+ RMSS(28)=SUPER(65)
+C...SLHA trilinears
+ DO 142 K1=1,3
+ DO 141 K2=1,3
+ AE(K1,K2)=0D0
+ AU(K1,K2)=0D0
+ AD(K1,K2)=0D0
+ 141 CONTINUE
+ 142 CONTINUE
+ AE(3,3)=SUPER(64)
+ AU(3,3)=SUPER(60)
+ AD(3,3)=SUPER(62)
+C...Higgs mixing angle alpha (Gunion-Haber convention).
+ RMSS(18)=-SUPER(59)
+C...A0 mass.
+ RMSS(19)=SUPER(57)
+C...GUT scale coupling
+ RMSS(20)=AGUTSS
+C...Gravitino mass (for future compatibility)
+ RMSS(21)=MAX(RMSS(21),DBLE(SUPER(66)))
+
+C...Now we're done with RMSS. Time to fill PMAS (m > 0 required).
+C...Higgs sector.
+ PMAS(PYCOMP(25),1)=ABS(SUPER(55))
+ PMAS(PYCOMP(35),1)=ABS(SUPER(56))
+ PMAS(PYCOMP(36),1)=ABS(SUPER(57))
+ PMAS(PYCOMP(37),1)=ABS(SUPER(58))
+C...Gluino.
+ PMAS(PYCOMP(KSUSY1+21),1)=ABS(SUPER(1))
+C...Squarks and Sleptons.
+ DO 150 ILR=1,2
+ ILRM=ILR-1
+ PMAS(PYCOMP(ILR*KSUSY1+1),1)=ABS(SUPER(4+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+2),1)=ABS(SUPER(2+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+3),1)=ABS(SUPER(6+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+4),1)=ABS(SUPER(8+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+5),1)=ABS(SUPER(12+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+6),1)=ABS(SUPER(16+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+11),1)=ABS(SUPER(18+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+13),1)=ABS(SUPER(20+ILRM))
+ PMAS(PYCOMP(ILR*KSUSY1+15),1)=ABS(SUPER(24+ILRM))
+ 150 CONTINUE
+ PMAS(PYCOMP(KSUSY1+12),1)=ABS(SUPER(26))
+ PMAS(PYCOMP(KSUSY1+14),1)=ABS(SUPER(27))
+ PMAS(PYCOMP(KSUSY1+16),1)=ABS(SUPER(28))
+C...Neutralinos.
+ PMAS(PYCOMP(KSUSY1+22),1)=ABS(SUPER(31))
+ PMAS(PYCOMP(KSUSY1+23),1)=ABS(SUPER(32))
+ PMAS(PYCOMP(KSUSY1+25),1)=ABS(SUPER(33))
+ PMAS(PYCOMP(KSUSY1+35),1)=ABS(SUPER(34))
+C...Signed masses (extra minus from going to G-H convention).
+ SMZ(1)=-SUPER(31)
+ SMZ(2)=-SUPER(32)
+ SMZ(3)=-SUPER(33)
+ SMZ(4)=-SUPER(34)
+C...Charginos
+ PMAS(PYCOMP(KSUSY1+24),1)=ABS(SUPER(51))
+ PMAS(PYCOMP(KSUSY1+37),1)=ABS(SUPER(52))
+C...Signed masses (extra minus from going to G-H convention).
+ SMW(1)=-SUPER(51)
+ SMW(2)=-SUPER(52)
+
+C... Neutralino Mixing.
+ DO 160 IN=1,4
+ ZMIX(IN,1)= SUPER(38+4*(IN-1))
+ ZMIX(IN,2)= SUPER(37+4*(IN-1))
+ ZMIX(IN,3)=-SUPER(36+4*(IN-1))
+ ZMIX(IN,4)=-SUPER(35+4*(IN-1))
+ 160 CONTINUE
+C...Chargino Mixing (PYTHIA same angle as HERWIG).
+ THX=1D0
+ THY=1D0
+ IF (SUPER(53).GT.0) THX=-1D0
+ IF (SUPER(54).GT.0) THY=-1D0
+ UMIX(1,1) = -SIN(SUPER(53))
+ UMIX(1,2) = -COS(SUPER(53))
+ UMIX(2,1) = -THX*COS(SUPER(53))
+ UMIX(2,2) = THX*SIN(SUPER(53))
+ VMIX(1,1) = -SIN(SUPER(54))
+ VMIX(1,2) = -COS(SUPER(54))
+ VMIX(2,1) = -THY*COS(SUPER(54))
+ VMIX(2,2) = THY*SIN(SUPER(54))
+C...Sfermion mixing (PYTHIA same angle as ISAJET)
+ SFMIX(5,1)=COS(SUPER(63))
+ SFMIX(5,2)=SIN(SUPER(63))
+ SFMIX(5,3)=-SIN(SUPER(63))
+ SFMIX(5,4)=COS(SUPER(63))
+ SFMIX(6,1)=COS(SUPER(61))
+ SFMIX(6,2)=SIN(SUPER(61))
+ SFMIX(6,3)=-SIN(SUPER(61))
+ SFMIX(6,4)=COS(SUPER(61))
+ SFMIX(15,1)=COS(SUPER(65))
+ SFMIX(15,2)=SIN(SUPER(65))
+ SFMIX(15,3)=-SIN(SUPER(65))
+ SFMIX(15,4)=COS(SUPER(65))
+
+ IF (MSTP(122).NE.0) THEN
+C...Print a few lines to make the user know what's happening
+ ISAVER=VISAJE()
+ WRITE(MSTU(11),5000) DOC, ISAVER
+ WRITE(MSTU(11),5100)
+ IF (IMODEL.EQ.1) THEN
+ WRITE(MSTU(11),5200) MZERO, MHLF, AZERO, TANB, NINT(SGNMU),
+ & MTOP
+ WRITE(MSTU(11),5300)
+ ENDIF
+ WRITE(MSTU(11),5500) 'Pole masses'
+ WRITE(MSTU(11),5700) (SUPER(IP),IP=2,16,2),(SUPER(IP),IP=3,17,2)
+ WRITE(MSTU(11),5800) (SUPER(IP),IP=18,24,2),(SUPER(IP),IP=26,28)
+ & ,(SUPER(IP),IP=19,25,2)
+ WRITE(MSTU(11),5900) SUPER(1),(SMZ(IP),IP=1,4), (SMW(IP)
+ & ,IP=1,2)
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),6000) (SUPER(IP),IP=55,58)
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),5500) 'EW scale mixing structure'
+ WRITE(MSTU(11),6100) ((ZMIX(I,J), J=1,4),I=1,4)
+ WRITE(MSTU(11),6200) (UMIX(1,J), J=1,2),(VMIX(1,J),J=1,2)
+ & ,(UMIX(2,J), J=1,2),(VMIX(2,J),J=1,2)
+ WRITE(MSTU(11),6300) (SFMIX(5,J), J=1,2),(SFMIX(6,J),J=1,2)
+ & ,(SFMIX(15,J), J=1,2),(SFMIX(5,J),J=3,4),(SFMIX(6,J), J=3,4
+ & ),(SFMIX(15,J),J=3,4)
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),6450) RMSS(18)
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),5500) 'Couplings'
+ WRITE(MSTU(11),6400) RMSS(15),RMSS(16),RMSS(17),RMSS(20)
+ WRITE(MSTU(11),5400)
+ ENDIF
+
+C...Call FeynHiggs to improve Higgs sector if requested
+ IF (IMSS(4).EQ.3) THEN
+ IF (MSTP(122).NE.0) WRITE(MSTU(11),'(1x,"*"/1x,"*",A)')
+ & ' (PYSUGI:) Now calling FeynHiggs.'
+ CALL PYFEYN(IERR)
+ IF (IERR.EQ.0) THEN
+ IMSS(4)=2
+ IF (MSTP(122).NE.0) THEN
+ WRITE(MSTU(11),5400)
+ WRITE(MSTU(11),5500)
+ & 'Corrected Higgs masses and mixing'
+ WRITE(MSTU(11),6000) PMAS(25,1),PMAS(35,1),PMAS(36,1),
+ & PMAS(37,1)
+ WRITE(MSTU(11),6450) RMSS(18)
+ WRITE(MSTU(11),5400)
+ ENDIF
+ ENDIF
+ ENDIF
+
+ IF (MSTP(122).NE.0) WRITE(MSTU(11),6500)
+
+C...Fix the higgs sector (in PYMSIN) using the masses and mixing angle
+C...output by ISASUSY.
+ IMSS(4)=MAX(2,IMSS(4))
+
+ 5000 FORMAT(1x,19('*'),1x,'PYSUGI v1.52: PYTHIA/ISASUSY '
+ & ,'INTERFACE',1x,19('*')/1x,'*',3x,'PYSUGI: Last Change',1x,A
+ & ,1x,'-',1x,'P. Skands / S. Mrenna'/1x,'*',2x,A/1x,'*')
+ 5100 FORMAT(1x,'*',1x,'ISASUSY Input:'/1x,'*',1x,'----------------')
+ 5200 FORMAT(1x,'*',1x,3x,'M_0',6x,'M_1/2',5x,'A_0',3x,'Tan(beta)',
+ & 3x,'Sgn(mu)',3x,'M_t'/1x,'*',1x,4(F8.2,1x),I8,2x,F8.2)
+ 5300 FORMAT(1x,'*'/1x,'*',1x,'ISASUSY Output:'/1x,'*',1x
+ & ,'----------------')
+ 5400 FORMAT(1x,'*',1x,A)
+ 5500 FORMAT(1x,'*',1x,A,':')
+ 5600 FORMAT(1x,'*',2x,2x,'M_GUT',2x,2x,'g_GUT',2x,1x,'alpha_GUT'/
+ & 1x,'*',2x,1P,2(1x,E8.2),2x,E8.2)
+ 5700 FORMAT(1x,'*',4x,4x,'~u',2x,1x,4x,'~d',2x,1x,4x,'~s',2x,1x,
+ & 4x,'~c',2x,1x,4x,'~b',2x,1x,2x,'~b(12)',1x,4x,'~t',2x,1x, 2x,
+ & '~t(12)'/1x,'*',2x,'L',1x,8(F8.2,1x)/1x,'*',2x,'R',1x,8(F8.2
+ & ,1x))
+ 5800 FORMAT(1x,'*'/1x,'*',4x,4x,'~e',2x,1x,3x,'~mu',2x,1x,3x,'~tau',1x
+ & ,1x,'~tau(12)',1x,2x,'~nu_e',1x,1x,1x,'~nu_mu',1x,1x,1x
+ & ,'~nu_tau'/1x,'*',2x,'L',1x,7(F8.2,1x)/1x,'*',2x,'R',1x,4(F8
+ & .2,1x))
+ 5900 FORMAT(1x,'*'/1x,'*',4x,4x,'~g',2x,1x,1x,'~chi_10',1x,1x,'~chi_20'
+ & ,1x,1x,'~chi_30',1x,1x,'~chi_40',1x,1x,'~chi_1+',1x
+ & ,1x,'~chi_2+'/1x,'*',3x,1x,7(F8.2,1x))
+ 6000 FORMAT(1x,'*',4x,4x,'h0',2x,1x,4x,'H0',2x,1x,4x,'A0',2x
+ & ,1x,4x,'H+'/1x,'*',3x,1x,5(F8.2,1x))
+ 6050 FORMAT(1x,'*'/1x,'*',4x,4x,'h0',2x,1x,4x,'H0',2x,1x,4x,'A0',2x
+ & ,1x,4x,'H+'/1x,'*',3x,1x,5(F8.2,1x),3x,'(Before FeynHiggs)')
+ 6100 FORMAT(1x,'*',11x,'|',3x,'~B',3x,'|',2x,'~W_3',2x,'|',2x
+ & ,'~H_1',2x,'|',2x,'~H_2',2x,'|'/1x,'*',3x,'~chi_10',1x,4('|'
+ & ,1x,F6.3,1x),'|'/1x,'*',3x,'~chi_20',1x,4('|'
+ & ,1x,F6.3,1x),'|'/1x,'*',3x,'~chi_30',1x,4('|'
+ & ,1x,F6.3,1x),'|'/1x,'*',3x,'~chi_40',1x,4('|'
+ & ,1x,F6.3,1x),'|')
+ 6200 FORMAT(1x,'*'/1x,'*',6x,'L',4x,'|',3x,'~W',3x,'|',3x,'~H',3x,'|'
+ & ,12x,'R',4x,'|',3x,'~W',3x,'|',3x,'~H',3x,'|'/1x,'*',3x
+ & ,'~chi_1+',1x,2('|',1x,F6.3,1x),'|',9x,'~chi_1+',1x,2('|',1x
+ & ,F6.3,1x),'|'/1x,'*',3x,'~chi_2+',1x,2('|',1x,F6.3,1x),'|',9x
+ & ,'~chi_2+',1x,2('|',1x,F6.3,1x),'|')
+ 6300 FORMAT(1x,'*'/1x,'*',8x,'|',2x,'~b_L',2x,'|',2x,'~b_R',2x,'|',8x
+ & ,'|',2x,'~t_L',2x,'|',2x,'~t_R',2x,'|',10x
+ & ,'|',1x,'~tau_L',1x,'|',1x,'~tau_R',1x,'|'/
+ & 1x,'*',3x,'~b_1',1x,2('|',1x,F6.3,1x),'|',3x,'~t_1',1x,2('|'
+ & ,1x,F6.3,1x),'|',3x,'~tau_1',1x,2('|',1x,F6.3,1x),'|'/
+ & 1x,'*',3x,'~b_2',1x,2('|',1x,F6.3,1x),'|',3x,'~t_2',1x,2('|'
+ & ,1x,F6.3,1x),'|',3x,'~tau_2',1x,2('|',1x,F6.3,1x),'|')
+ 6400 FORMAT(1x,'*',3x,'A_b = ',F8.2,4x,'A_t = ',F8.2,4x,'A_tau = ',F8.2
+ & ,4x,'Alpha_GUT = ',F8.2)
+ 6450 FORMAT(1x,'*',3x,'Alpha_Higgs = ',F8.4)
+ 6500 FORMAT(1x,32('*'),1x,'END OF PYSUGI',1x,31('*'))
+
+ 9999 RETURN
+ END
+
+C*********************************************************************
+
+C...PYFEYN
+C...Interface to FeynHiggs for MSSM Higgs sector.
+C...Pythia6.402: Updated to FeynHiggs v.2.3.0+ w/ DOUBLE COMPLEX
+C...P. Skands
+
+ SUBROUTINE PYFEYN(IERR)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+C...SUSY blocks
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+C...FeynHiggs variables
+ DOUBLE PRECISION RMHIGG(4)
+ DOUBLE COMPLEX SAEFF, UHIGGS(3,3)
+ DOUBLE COMPLEX DMU,
+ & AE33, AU33, AD33, AE22, AU22, AD22, AE11, AU11, AD11,
+ & DM1, DM2, DM3
+C...SLHA Common Block
+ COMMON/PYLH3P/MODSEL(200),PARMIN(100),PAREXT(200),RMSOFT(0:100),
+ & AU(3,3),AD(3,3),AE(3,3)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYLH3P/
+
+ IERR=0
+ CALL FHSETFLAGS(IERR,4,0,0,2,0,2,1,1)
+ IF (IERR.NE.0) THEN
+ CALL PYERRM(11,'(PYHGGM:) Caught error from FHSETFLAGS.'
+ & //'Will not use FeynHiggs for this run.')
+ RETURN
+ ENDIF
+ Q=RMSOFT(0)
+ DMB=PMAS(5,1)
+ DMT=PMAS(6,1)
+ DMZ=PMAS(23,1)
+ DMW=PMAS(24,1)
+ DMA=PMAS(36,1)
+ DM1=RMSOFT(1)
+ DM2=RMSOFT(2)
+ DM3=RMSOFT(3)
+ DTANB=RMSS(5)
+ DMU=RMSS(4)
+ DM3SL=RMSOFT(33)
+ DM3SE=RMSOFT(36)
+ DM3SQ=RMSOFT(43)
+ DM3SU=RMSOFT(46)
+ DM3SD=RMSOFT(49)
+ DM2SL=RMSOFT(32)
+ DM2SE=RMSOFT(35)
+ DM2SQ=RMSOFT(42)
+ DM2SU=RMSOFT(45)
+ DM2SD=RMSOFT(48)
+ DM1SL=RMSOFT(31)
+ DM1SE=RMSOFT(34)
+ DM1SQ=RMSOFT(41)
+ DM1SU=RMSOFT(44)
+ DM1SD=RMSOFT(47)
+ AE33=AE(3,3)
+ AE22=AE(2,2)
+ AE11=AE(1,1)
+ AU33=AU(3,3)
+ AU22=AU(2,2)
+ AU11=AU(1,1)
+ AD33=AD(3,3)
+ AD22=AD(2,2)
+ AD11=AD(1,1)
+ CALL FHSETPARA(IERR, 1D0, DMT, DMB, DMW, DMZ, DTANB,
+ & DMA,0D0, DM3SL, DM3SE, DM3SQ, DM3SU, DM3SD,
+ & DM2SL, DM2SE, DM2SQ, DM2SU, DM2SD,
+ & DM1SL, DM1SE, DM1SQ, DM1SU, DM1SD,DMU,
+ & AE33, AU33, AD33, AE22, AU22, AD22, AE11, AU11, AD11,
+ & DM1, DM2, DM3, 0D0, 0D0,Q,Q,Q)
+ IF (IERR.NE.0) THEN
+ CALL PYERRM(11,'(PYHGGM:) Caught error from FHSETPARA.'
+ & //' Will not use FeynHiggs for this run.')
+ RETURN
+ ENDIF
+C... Get Higgs masses & alpha_eff. (UHIGGS redundant here, only for CPV)
+ SAEFF=0D0
+ CALL FHHIGGSCORR(IERR, RMHIGG, SAEFF, UHIGGS)
+ IF (IERR.NE.0) THEN
+ CALL PYERRM(11,'(PYFEYN:) Caught error from FHHIG'//
+ & 'GSCORR. Will not use FeynHiggs for this run.')
+ RETURN
+ ENDIF
+ ALPHA = ASIN(DBLE(SAEFF))
+ R=RMSS(18)/ALPHA
+ IF (R.LT.0D0.OR.ABS(R).GT.1.2D0.OR.ABS(R).LT.0.8D0) THEN
+ CALL PYERRM(1,'(PYFEYN:) Large corrections in Higgs sector.')
+ WRITE(MSTU(11),*) ' Old Alpha:', RMSS(18)
+ WRITE(MSTU(11),*) ' New Alpha:', ALPHA
+ ENDIF
+ IF (RMHIGG(1).LT.0.85D0*PMAS(25,1).OR.RMHIGG(1).GT.
+ & 1.15D0*PMAS(25,1)) THEN
+ CALL PYERRM(1,'(PYFEYN:) Large corrections in Higgs sector.')
+ WRITE(MSTU(11),*) ' Old m(h0):', PMAS(25,1)
+ WRITE(MSTU(11),*) ' New m(h0):', RMHIGG(1)
+ ENDIF
+ RMSS(18)=ALPHA
+ PMAS(25,1)=RMHIGG(1)
+ PMAS(35,1)=RMHIGG(2)
+ PMAS(36,1)=RMHIGG(3)
+ PMAS(37,1)=RMHIGG(4)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRNMQ
+C...Determines the running mass of Squarks.
+
+ FUNCTION PYRNMQ(ID,DTERM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblock.
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ SAVE /PYMSSM/
+
+C...Local variables.
+ DOUBLE PRECISION PI,R
+ DOUBLE PRECISION TOL
+ DOUBLE PRECISION CI(3)
+ EXTERNAL PYALPS
+ DOUBLE PRECISION PYALPS
+ DATA TOL/0.001D0/
+ DATA PI,R/3.141592654D0,.61803399D0/
+ DATA CI/0.47D0,0.07D0,0.02D0/
+
+ C=1D0-R
+ CA=CI(ID)
+ AG=(0.71D0)**2/4D0/PI
+ AG=RMSS(20)
+ XM0=RMSS(8)
+ XMG=RMSS(1)
+ XM02=XM0*XM0
+ XMG2=XMG*XMG
+
+ AS=PYALPS(XM02+6D0*XMG2)
+ CG=8D0/9D0*((AS/AG)**2-1D0)
+ BX=XM02+(CA+CG)*XMG2+DTERM
+ AX=MIN(50D0**2,0.5D0*BX)
+ CX=MAX(2000D0**2,2D0*BX)
+
+ X0=AX
+ X3=CX
+ IF(ABS(CX-BX).GT.ABS(BX-AX))THEN
+ X1=BX
+ X2=BX+C*(CX-BX)
+ ELSE
+ X2=BX
+ X1=BX-C*(BX-AX)
+ ENDIF
+ AS1=PYALPS(X1)
+ CG=8D0/9D0*((AS1/AG)**2-1D0)
+ F1=ABS(XM02+(CA+CG)*XMG2+DTERM-X1)
+ AS2=PYALPS(X2)
+ CG=8D0/9D0*((AS2/AG)**2-1D0)
+ F2=ABS(XM02+(CA+CG)*XMG2+DTERM-X2)
+ 100 IF(ABS(X3-X0).GT.TOL*(ABS(X1)+ABS(X2))) THEN
+ IF(F2.LT.F1) THEN
+ X0=X1
+ X1=X2
+ X2=R*X1+C*X3
+ F1=F2
+ AS2=PYALPS(X2)
+ CG=8D0/9D0*((AS2/AG)**2-1D0)
+ F2=ABS(XM02+(CA+CG)*XMG2+DTERM-X2)
+ ELSE
+ X3=X2
+ X2=X1
+ X1=R*X2+C*X0
+ F2=F1
+ AS1=PYALPS(X1)
+ CG=8D0/9D0*((AS1/AG)**2-1D0)
+ F1=ABS(XM02+(CA+CG)*XMG2+DTERM-X1)
+ ENDIF
+ GOTO 100
+ ENDIF
+ IF(F1.LT.F2) THEN
+ PYRNMQ=X1
+ XMIN=X1
+ ELSE
+ PYRNMQ=X2
+ XMIN=X2
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTHRG
+C...Calculates the mass eigenstates of the third generation sfermions.
+C...Created: 5-31-96
+
+ SUBROUTINE PYTHRG
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/
+
+C...Local variables.
+ DOUBLE PRECISION BETA
+ DOUBLE PRECISION AM2(2,2),RT(2,2),DI(2,2)
+ DOUBLE PRECISION XMZ2,XMW2,TANB,XMU,COS2B,XMQL2,XMQR2
+ DOUBLE PRECISION XMF,XMF2,DIFF,SAME,XMF12,XMF22,SMALL
+ DOUBLE PRECISION ATR,AMQR,AMQL
+ INTEGER ID1(3),ID2(3),ID3(3),ID4(3)
+ INTEGER IF,I,J,II,JJ,IT,L
+ LOGICAL DTERM
+ DATA SMALL/1D-3/
+ DATA ID1/10,10,13/
+ DATA ID2/5,6,15/
+ DATA ID3/15,16,17/
+ DATA ID4/11,12,14/
+ DATA DTERM/.TRUE./
+
+ XMZ2=PMAS(23,1)**2
+ XMW2=PMAS(24,1)**2
+ TANB=RMSS(5)
+ XMU=-RMSS(4)
+ BETA=ATAN(TANB)
+ COS2B=COS(2D0*BETA)
+
+C...OPTION TO FIX T1, T2, B1 MASSES AND MIXINGS
+
+ IOPT=IMSS(5)
+ IF(IOPT.EQ.1) THEN
+ CTT=DCOS(RMSS(27))
+ CTT2=CTT**2
+ STT=DSIN(RMSS(27))
+ STT2=STT**2
+ XM12=RMSS(10)**2
+ XM22=RMSS(12)**2
+ XMQL2=CTT2*XM12+STT2*XM22
+ XMQR2=STT2*XM12+CTT2*XM22
+ XMF2=PYMRUN(6,PMAS(6,1)**2)**2
+ ATOP=-XMU/TANB+CTT*STT*(XM12-XM22)/SQRT(XMF2)
+ RMSS(16)=ATOP
+C......SUBTRACT OUT D-TERM AND FERMION MASS
+ XMQL2=XMQL2-XMF2-(4D0*XMW2-XMZ2)*COS2B/6D0
+ XMQR2=XMQR2-XMF2+(XMW2-XMZ2)*COS2B*2D0/3D0
+ IF(XMQL2.GE.0D0) THEN
+ RMSS(10)=SQRT(XMQL2)
+ ELSE
+ RMSS(10)=-SQRT(-XMQL2)
+ ENDIF
+ IF(XMQR2.GE.0D0) THEN
+ RMSS(12)=SQRT(XMQR2)
+ ELSE
+ RMSS(12)=-SQRT(-XMQR2)
+ ENDIF
+
+C SAME FOR BOTTOM SQUARK
+ CTT=DCOS(RMSS(26))
+ CTT2=CTT**2
+ STT=DSIN(RMSS(26))
+ STT2=STT**2
+ XM22=RMSS(11)**2
+ XMF2=PYMRUN(5,PMAS(6,1)**2)**2
+ XMQL2=SIGN(RMSS(10)**2,RMSS(10))-(2D0*XMW2+XMZ2)*COS2B/6D0+XMF2
+ IF(ABS(CTT).GE..9999D0) THEN
+ ABOT=-XMU*TANB
+ XMQR2=RMSS(11)**2
+ ELSEIF(ABS(CTT).LE.1D-4) THEN
+ ABOT=-XMU*TANB
+ XMQR2=RMSS(11)**2
+ ELSE
+ XM12=(XMQL2-STT2*XM22)/CTT2
+ XMQR2=STT2*XM12+CTT2*XM22
+ ABOT=-XMU*TANB+CTT*STT*(XM12-XM22)/SQRT(XMF2)
+ ENDIF
+ RMSS(15)=ABOT
+C......SUBTRACT OUT D-TERM AND FERMION MASS
+ XMQR2=XMQR2-(XMW2-XMZ2)*COS2B/3D0-XMF2
+ IF(XMQR2.GE.0D0) THEN
+ RMSS(11)=SQRT(XMQR2)
+ ELSE
+ RMSS(11)=-SQRT(-XMQR2)
+ ENDIF
+C SAME FOR TAU SLEPTON
+ CTT=DCOS(RMSS(28))
+ CTT2=CTT**2
+ STT=DSIN(RMSS(28))
+ STT2=STT**2
+ XM12=RMSS(13)**2
+ XM22=RMSS(14)**2
+ XMQL2=CTT2*XM12+STT2*XM22
+ XMQR2=STT2*XM12+CTT2*XM22
+ XMFR=PMAS(15,1)
+ XMF2=XMFR**2
+ ATAU=-XMU*TANB+CTT*STT*(XM12-XM22)/SQRT(XMF2)
+ RMSS(17)=ATAU
+C......SUBTRACT OUT D-TERM AND FERMION MASS
+ XMQL2=XMQL2-XMF2+(-.5D0*XMZ2+XMW2)*COS2B
+ XMQR2=XMQR2-XMF2+(XMZ2-XMW2)*COS2B
+ IF(XMQL2.GE.0D0) THEN
+ RMSS(13)=SQRT(XMQL2)
+ ELSE
+ RMSS(13)=-SQRT(-XMQL2)
+ ENDIF
+ IF(XMQR2.GE.0D0) THEN
+ RMSS(14)=SQRT(XMQR2)
+ ELSE
+ RMSS(14)=-SQRT(-XMQR2)
+ ENDIF
+ ENDIF
+ DO 170 L=1,3
+ AMQL=RMSS(ID1(L))
+ IF(AMQL.LT.0D0) THEN
+ XMQL2=-AMQL**2
+ ELSE
+ XMQL2=AMQL**2
+ ENDIF
+ ATR=RMSS(ID3(L))
+ AMQR=RMSS(ID4(L))
+ IF(AMQR.LT.0D0) THEN
+ XMQR2=-AMQR**2
+ ELSE
+ XMQR2=AMQR**2
+ ENDIF
+ IF=ID2(L)
+ XMF=PYMRUN(IF,PMAS(6,1)**2)
+ XMF2=XMF**2
+ AM2(1,1)=XMQL2+XMF2
+ AM2(2,2)=XMQR2+XMF2
+ IF(AM2(1,1).EQ.AM2(2,2)) AM2(2,2)=AM2(2,2)*1.00001D0
+ IF(DTERM) THEN
+ IF(L.EQ.1) THEN
+ AM2(1,1)=AM2(1,1)-(2D0*XMW2+XMZ2)*COS2B/6D0
+ AM2(2,2)=AM2(2,2)+(XMW2-XMZ2)*COS2B/3D0
+ AM2(1,2)=XMF*(ATR+XMU*TANB)
+ ELSEIF(L.EQ.2) THEN
+ AM2(1,1)=AM2(1,1)+(4D0*XMW2-XMZ2)*COS2B/6D0
+ AM2(2,2)=AM2(2,2)-(XMW2-XMZ2)*COS2B*2D0/3D0
+ AM2(1,2)=XMF*(ATR+XMU/TANB)
+ ELSEIF(L.EQ.3) THEN
+ IF(IMSS(8).EQ.1) THEN
+ AM2(1,1)=RMSS(6)**2
+ AM2(2,2)=RMSS(7)**2
+ AM2(1,2)=0D0
+ RMSS(13)=RMSS(6)
+ RMSS(14)=RMSS(7)
+ ELSE
+ AM2(1,1)=AM2(1,1)-(-.5D0*XMZ2+XMW2)*COS2B
+ AM2(2,2)=AM2(2,2)-(XMZ2-XMW2)*COS2B
+ AM2(1,2)=XMF*(ATR+XMU*TANB)
+ ENDIF
+ ENDIF
+ ENDIF
+ AM2(2,1)=AM2(1,2)
+ DETM=AM2(1,1)*AM2(2,2)-AM2(2,1)**2
+ IF(DETM.LT.0D0) THEN
+ WRITE(MSTU(11),*) ID2(L),DETM,AM2
+ CALL PYERRM(30,' NEGATIVE**2 MASS FOR SFERMION IN PYTHRG ')
+ ENDIF
+ SAME=0.5D0*(AM2(1,1)+AM2(2,2))
+ DIFF=0.5D0*SQRT((AM2(1,1)-AM2(2,2))**2+4D0*AM2(1,2)*AM2(2,1))
+ XMF12=SAME-DIFF
+ XMF22=SAME+DIFF
+ IT=0
+ IF(XMF22-XMF12.GT.0D0) THEN
+ RT(1,1) = SQRT(MAX(0D0,(XMF22-AM2(1,1))/(XMF22-XMF12)))
+ RT(2,2) = RT(1,1)
+ RT(1,2) = -SIGN(SQRT(MAX(0D0,1D0-RT(1,1)**2)),
+ & AM2(1,2)/(XMF22-XMF12))
+ RT(2,1) = -RT(1,2)
+ ELSE
+ RT(1,1) = 1D0
+ RT(2,2) = RT(1,1)
+ RT(1,2) = 0D0
+ RT(2,1) = -RT(1,2)
+ ENDIF
+ 100 CONTINUE
+ IT=IT+1
+
+ DO 140 I=1,2
+ DO 130 JJ=1,2
+ DI(I,JJ)=0D0
+ DO 120 II=1,2
+ DO 110 J=1,2
+ DI(I,JJ)=DI(I,JJ)+RT(I,J)*AM2(J,II)*RT(JJ,II)
+ 110 CONTINUE
+ 120 CONTINUE
+ 130 CONTINUE
+ 140 CONTINUE
+
+ IF(DI(1,1).GT.DI(2,2)) THEN
+ WRITE(MSTU(11),*) ' ERROR IN DIAGONALIZATION '
+ WRITE(MSTU(11),*) L,SQRT(XMF12),SQRT(XMF22)
+ WRITE(MSTU(11),*) AM2
+ WRITE(MSTU(11),*) DI
+ WRITE(MSTU(11),*) RT
+ DI(1,1)=-RT(2,1)
+ DI(2,2)=RT(1,2)
+ DI(1,2)=-RT(2,2)
+ DI(2,1)=RT(1,1)
+ DO 160 I=1,2
+ DO 150 J=1,2
+ RT(I,J)=DI(I,J)
+ 150 CONTINUE
+ 160 CONTINUE
+ GOTO 100
+ ELSEIF(ABS(DI(1,2)*DI(2,1)/DI(1,1)/DI(2,2)).GT.SMALL) THEN
+ WRITE(MSTU(11),*) ' ERROR IN DIAGONALIZATION,'//
+ & ' OFF DIAGONAL ELEMENTS '
+ WRITE(MSTU(11),*) 'MASSES = ',L,SQRT(XMF12),SQRT(XMF22)
+ WRITE(MSTU(11),*) DI
+ WRITE(MSTU(11),*) ' ROTATION = ',RT
+C...STOP
+ ELSEIF(DI(1,1).LT.0D0.OR.DI(2,2).LT.0D0) THEN
+ WRITE(MSTU(11),*) ' ERROR IN DIAGONALIZATION,'//
+ & ' NEGATIVE MASSES '
+ CALL PYSTOP(111)
+ ENDIF
+ PMAS(PYCOMP(KSUSY1+IF),1)=SQRT(XMF12)
+ PMAS(PYCOMP(KSUSY2+IF),1)=SQRT(XMF22)
+ SFMIX(IF,1)=RT(1,1)
+ SFMIX(IF,2)=RT(1,2)
+ SFMIX(IF,3)=RT(2,1)
+ SFMIX(IF,4)=RT(2,2)
+ 170 CONTINUE
+
+C.....TAU SNEUTRINO MASS...L=3
+
+ XARG=AM2(1,1)+XMW2*COS2B
+ IF(XARG.LT.0D0) THEN
+ WRITE(MSTU(11),*) ' PYTHRG:: TAU SNEUTRINO MASS IS NEGATIVE'//
+ & ' FROM THE SUM RULE. '
+ WRITE(MSTU(11),*) ' TRY A SMALLER VALUE OF TAN(BETA). '
+ RETURN
+ ELSE
+ PMAS(PYCOMP(KSUSY1+16),1)=SQRT(XARG)
+ ENDIF
+
+ RETURN
+ END
+C*********************************************************************
+
+C...PYINOM
+C...Finds the mass eigenstates and mixing matrices for neutralinos
+C...and charginos.
+
+ SUBROUTINE PYINOM
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/
+
+C...Local variables.
+ DOUBLE PRECISION XMW,XMZ,XM(4)
+ DOUBLE PRECISION AR(5,5),WR(5),ZR(5,5),ZI(5,5),AI(5,5)
+ DOUBLE PRECISION WI(5),FV1(5),FV2(5),FV3(5)
+ DOUBLE PRECISION COSW,SINW
+ DOUBLE PRECISION XMU
+ DOUBLE PRECISION TANB,COSB,SINB
+ DOUBLE PRECISION XM1,XM2,XM3,BETA
+ DOUBLE PRECISION Q2,AEM,A1,A2,AQ,RM1,RM2
+ DOUBLE PRECISION ARG,X0,X1,AX0,AX1,AT,BT
+ DOUBLE PRECISION Y0,Y1,AMGX0,AM1X0,AMGX1,AM1X1
+ DOUBLE PRECISION ARGX0,AR1X0,ARGX1,AR1X1
+ DOUBLE PRECISION PYALPS,PYALEM
+ DOUBLE PRECISION PYRNM3
+ COMPLEX*16 CAR(4,4),CAI(4,4),CA1,CA2
+ INTEGER IERR,INDEX(4),I,J,K,IOPT,ILR,KFNCHI(4)
+ DATA KFNCHI/1000022,1000023,1000025,1000035/
+
+ IOPT=IMSS(2)
+ IF(IMSS(1).EQ.2) THEN
+ IOPT=1
+ ENDIF
+C...M1, M2, AND M3 ARE INDEPENDENT
+ IF(IOPT.EQ.0) THEN
+ XM1=RMSS(1)
+ XM2=RMSS(2)
+ XM3=RMSS(3)
+ ELSEIF(IOPT.GE.1) THEN
+ Q2=PMAS(23,1)**2
+ AEM=PYALEM(Q2)
+ A2=AEM/PARU(102)
+ A1=AEM/(1D0-PARU(102))
+ XM1=RMSS(1)
+ XM2=RMSS(2)
+ IF(IMSS(1).EQ.2) XM1=RMSS(1)/RMSS(20)*A1*5D0/3D0
+ IF(IOPT.EQ.1) THEN
+ XM2=XM1*A2/A1*3D0/5D0
+ RMSS(2)=XM2
+ ELSEIF(IOPT.EQ.3) THEN
+ XM1=XM2*5D0/3D0*A1/A2
+ RMSS(1)=XM1
+ ENDIF
+ XM3=PYRNM3(XM2/A2)
+ RMSS(3)=XM3
+ IF(XM3.LE.0D0) THEN
+ WRITE(MSTU(11),*) ' ERROR WITH M3 = ',XM3
+ CALL PYSTOP(105)
+ ENDIF
+ ENDIF
+
+C...GLUINO MASS
+ IF(IMSS(3).EQ.1) THEN
+ PMAS(PYCOMP(KSUSY1+21),1)=ABS(XM3)
+ ELSE
+ AQ=0D0
+ DO 110 I=1,4
+ DO 100 ILR=1,2
+ RM1=PMAS(PYCOMP(ILR*KSUSY1+I),1)**2/XM3**2
+ AQ=AQ+0.5D0*((2D0-RM1)*(RM1*LOG(RM1)-1D0)
+ & +(1D0-RM1)**2*LOG(ABS(1D0-RM1)))
+ 100 CONTINUE
+ 110 CONTINUE
+
+ DO 130 I=5,6
+ DO 120 ILR=1,2
+ RM1=PMAS(PYCOMP(ILR*KSUSY1+I),1)**2/XM3**2
+ RM2=PMAS(I,1)**2/XM3**2
+ ARG=(RM1-RM2-1D0)**2-4D0*RM2**2
+ IF(ARG.GE.0D0) THEN
+ X0=0.5D0*(1D0+RM2-RM1-SQRT(ARG))
+ AX0=ABS(X0)
+ X1=0.5D0*(1D0+RM2-RM1+SQRT(ARG))
+ AX1=ABS(X1)
+ IF(X0.EQ.1D0) THEN
+ AT=-1D0
+ BT=0.25D0
+ ELSEIF(X0.EQ.0D0) THEN
+ AT=0D0
+ BT=-0.25D0
+ ELSE
+ AT=0.5D0*LOG(ABS(1D0-X0))*(1D0-X0**2)+
+ & 0.5D0*X0**2*LOG(AX0)
+ BT=(-1D0-2D0*X0)/4D0
+ ENDIF
+ IF(X1.EQ.1D0) THEN
+ AT=-1D0+AT
+ BT=0.25D0+BT
+ ELSEIF(X1.EQ.0D0) THEN
+ AT=0D0+AT
+ BT=-0.25D0+BT
+ ELSE
+ AT=0.5D0*LOG(ABS(1D0-X1))*(1D0-X1**2)+0.5D0*
+ & X1**2*LOG(AX1)+AT
+ BT=(-1D0-2D0*X1)/4D0+BT
+ ENDIF
+ AQ=AQ+AT+BT
+ ELSE
+ X0=0.5D0*(1D0+RM2-RM1)
+ Y0=-0.5D0*SQRT(-ARG)
+ AMGX0=SQRT(X0**2+Y0**2)
+ AM1X0=SQRT((1D0-X0)**2+Y0**2)
+ ARGX0=ATAN2(-X0,-Y0)
+ AR1X0=ATAN2(1D0-X0,Y0)
+ X1=X0
+ Y1=-Y0
+ AMGX1=AMGX0
+ AM1X1=AM1X0
+ ARGX1=ATAN2(-X1,-Y1)
+ AR1X1=ATAN2(1D0-X1,Y1)
+ AT=0.5D0*LOG(AM1X0)*(1D0-X0**2+3D0*Y0**2)
+ & +0.5D0*(X0**2-Y0**2)*LOG(AMGX0)
+ BT=(-1D0-2D0*X0)/4D0+X0*Y0*( AR1X0-ARGX0 )
+ AT=AT+0.5D0*LOG(AM1X1)*(1D0-X1**2+3D0*Y1**2)
+ & +0.5D0*(X1**2-Y1**2)*LOG(AMGX1)
+ BT=BT+(-1D0-2D0*X1)/4D0+X1*Y1*( AR1X1-ARGX1 )
+ AQ=AQ+AT+BT
+ ENDIF
+ 120 CONTINUE
+ 130 CONTINUE
+ PMAS(PYCOMP(KSUSY1+21),1)=ABS(XM3)*(1D0+PYALPS(XM3**2)
+ & /(2D0*PARU(2))*(15D0+AQ))
+ ENDIF
+
+C...NEUTRALINO MASSES
+ DO 150 I=1,4
+ DO 140 J=1,4
+ AI(I,J)=0D0
+ 140 CONTINUE
+ 150 CONTINUE
+ XMZ=PMAS(23,1)/100D0
+ XMW=PMAS(24,1)/100D0
+ XMU=RMSS(4)/100D0
+ SINW=SQRT(PARU(102))
+ COSW=SQRT(1D0-PARU(102))
+ TANB=RMSS(5)
+ BETA=ATAN(TANB)
+ COSB=COS(BETA)
+ SINB=TANB*COSB
+
+ XM2=XM2/100D0
+ XM1=XM1/100D0
+
+
+C... Definitions:
+C... psi^0 =(-i bino^0, -i wino^0, h_d^0(=H_1^0), h_u^0(=H_2^0))
+C... => L_neutralino = -1/2*(psi^0)^T * [AR] * psi^0 + h.c.
+ AR(1,1) = XM1*COS(RMSS(30))
+ AI(1,1) = XM1*SIN(RMSS(30))
+ AR(2,2) = XM2*COS(RMSS(31))
+ AI(2,2) = XM2*SIN(RMSS(31))
+ AR(3,3) = 0D0
+ AR(4,4) = 0D0
+ AR(1,2) = 0D0
+ AR(2,1) = 0D0
+ AR(1,3) = -XMZ*SINW*COSB
+ AR(3,1) = AR(1,3)
+ AR(1,4) = XMZ*SINW*SINB
+ AR(4,1) = AR(1,4)
+ AR(2,3) = XMZ*COSW*COSB
+ AR(3,2) = AR(2,3)
+ AR(2,4) = -XMZ*COSW*SINB
+ AR(4,2) = AR(2,4)
+ AR(3,4) = -XMU*COS(RMSS(33))
+ AI(3,4) = -XMU*SIN(RMSS(33))
+ AR(4,3) = -XMU*COS(RMSS(33))
+ AI(4,3) = -XMU*SIN(RMSS(33))
+C CALL PYEIG4(AR,WR,ZR)
+ CALL PYEICG(5,4,AR,AI,WR,WI,1,ZR,ZI,FV1,FV2,FV3,IERR)
+ IF(IERR.NE.0) CALL PYERRM(18,'(PYINOM:) '//
+ & 'PROBLEM WITH PYEICG IN PYINOM ')
+ DO 160 I=1,4
+ INDEX(I)=I
+ XM(I)=ABS(WR(I))
+ 160 CONTINUE
+ DO 180 I=2,4
+ K=I
+ DO 170 J=I-1,1,-1
+ IF(XM(K).LT.XM(J)) THEN
+ ITMP=INDEX(J)
+ XTMP=XM(J)
+ INDEX(J)=INDEX(K)
+ XM(J)=XM(K)
+ INDEX(K)=ITMP
+ XM(K)=XTMP
+ K=K-1
+ ELSE
+ GOTO 180
+ ENDIF
+ 170 CONTINUE
+ 180 CONTINUE
+
+
+ DO 210 I=1,4
+ K=INDEX(I)
+ SMZ(I)=WR(K)*100D0
+ PMAS(PYCOMP(KFNCHI(I)),1)=ABS(SMZ(I))
+ S=0D0
+ DO 190 J=1,4
+ S=S+ZR(J,K)**2+ZI(J,K)**2
+ 190 CONTINUE
+ DO 200 J=1,4
+ ZMIX(I,J)=ZR(J,K)/SQRT(S)
+ ZMIXI(I,J)=ZI(J,K)/SQRT(S)
+ IF(ABS(ZMIX(I,J)).LT.1D-6) ZMIX(I,J)=0D0
+ IF(ABS(ZMIXI(I,J)).LT.1D-6) ZMIXI(I,J)=0D0
+ 200 CONTINUE
+ 210 CONTINUE
+
+C...CHARGINO MASSES
+C.....Find eigenvectors of X X^*
+ DO I=1,4
+ DO J=1,4
+ AR(I,J)=0D0
+ AI(I,J)=0D0
+ ENDDO
+ ENDDO
+ AI(1,1) = 0D0
+ AI(2,2) = 0D0
+ AR(1,1) = XM2**2+2D0*XMW**2*SINB**2
+ AR(2,2) = XMU**2+2D0*XMW**2*COSB**2
+ AR(1,2) = SQRT(2D0)*XMW*(XM2*COS(RMSS(31))*COSB+
+ &XMU*COS(RMSS(33))*SINB)
+ AI(1,2) = SQRT(2D0)*XMW*(XM2*SIN(RMSS(31))*COSB-
+ &XMU*SIN(RMSS(33))*SINB)
+ AR(2,1) = SQRT(2D0)*XMW*(XM2*COS(RMSS(31))*COSB+
+ &XMU*COS(RMSS(33))*SINB)
+ AI(2,1) = SQRT(2D0)*XMW*(-XM2*SIN(RMSS(31))*COSB+
+ &XMU*SIN(RMSS(33))*SINB)
+ CALL PYEICG(5,2,AR,AI,WR,WI,1,ZR,ZI,FV1,FV2,FV3,IERR)
+ IF(IERR.NE.0) CALL PYERRM(18,'(PYINOM:) '//
+ & 'PROBLEM WITH PYEICG IN PYINOM ')
+ INDEX(1)=1
+ INDEX(2)=2
+ IF(WR(2).LT.WR(1)) THEN
+ INDEX(1)=2
+ INDEX(2)=1
+ ENDIF
+
+
+ DO 240 I=1,2
+ K=INDEX(I)
+ SMW(I)=SQRT(WR(K))*100D0
+ S=0D0
+ DO 220 J=1,2
+ S=S+ZR(J,K)**2+ZI(J,K)**2
+ 220 CONTINUE
+ DO 230 J=1,2
+ UMIX(I,J)=ZR(J,K)/SQRT(S)
+ UMIXI(I,J)=-ZI(J,K)/SQRT(S)
+ IF(ABS(UMIX(I,J)).LT.1D-6) UMIX(I,J)=0D0
+ IF(ABS(UMIXI(I,J)).LT.1D-6) UMIXI(I,J)=0D0
+ 230 CONTINUE
+ 240 CONTINUE
+C...Force chargino mass > neutralino mass
+ IFRC=0
+ IF(ABS(SMW(1)).LT.ABS(SMZ(1))+2D0*PMAS(PYCOMP(111),1)) THEN
+ CALL PYERRM(18,'(PYINOM:) '//
+ & 'forcing m(~chi+_1) > m(~chi0_1) + 2m(pi0)')
+ SMW(1)=SIGN(ABS(SMZ(1))+2D0*PMAS(PYCOMP(111),1),SMW(1))
+ IFRC=1
+ ENDIF
+ PMAS(PYCOMP(KSUSY1+24),1)=SMW(1)
+ PMAS(PYCOMP(KSUSY1+37),1)=SMW(2)
+
+C.....Find eigenvectors of X^* X
+ DO I=1,4
+ DO J=1,4
+ AR(I,J)=0D0
+ AI(I,J)=0D0
+ ZR(I,J)=0D0
+ ZI(I,J)=0D0
+ ENDDO
+ ENDDO
+ AI(1,1) = 0D0
+ AI(2,2) = 0D0
+ AR(1,1) = XM2**2+2D0*XMW**2*COSB**2
+ AR(2,2) = XMU**2+2D0*XMW**2*SINB**2
+ AR(1,2) = SQRT(2D0)*XMW*(XM2*COS(RMSS(31))*SINB+
+ &XMU*COS(RMSS(33))*COSB)
+ AI(1,2) = SQRT(2D0)*XMW*(-XM2*SIN(RMSS(31))*SINB+
+ &XMU*SIN(RMSS(33))*COSB)
+ AR(2,1) = SQRT(2D0)*XMW*(XM2*COS(RMSS(31))*SINB+
+ &XMU*COS(RMSS(33))*COSB)
+ AI(2,1) = SQRT(2D0)*XMW*(XM2*SIN(RMSS(31))*SINB-
+ &XMU*SIN(RMSS(33))*COSB)
+ CALL PYEICG(5,2,AR,AI,WR,WI,1,ZR,ZI,FV1,FV2,FV3,IERR)
+ IF(IERR.NE.0) CALL PYERRM(18,'(PYINOM:) '//
+ & 'PROBLEM WITH PYEICG IN PYINOM ')
+ INDEX(1)=1
+ INDEX(2)=2
+ IF(WR(2).LT.WR(1)) THEN
+ INDEX(1)=2
+ INDEX(2)=1
+ ENDIF
+
+ SIMAG=0D0
+ DO 270 I=1,2
+ K=INDEX(I)
+ S=0D0
+ DO 250 J=1,2
+ S=S+ZR(J,K)**2+ZI(J,K)**2
+ SIMAG=SIMAG+ZI(J,K)**2
+ 250 CONTINUE
+ DO 260 J=1,2
+ VMIX(I,J)=ZR(J,K)/SQRT(S)
+ VMIXI(I,J)=-ZI(J,K)/SQRT(S)
+ IF(ABS(VMIX(I,J)).LT.1D-6) VMIX(I,J)=0D0
+ IF(ABS(VMIXI(I,J)).LT.1D-6) VMIXI(I,J)=0D0
+ 260 CONTINUE
+ 270 CONTINUE
+
+C.....Simplify if no phases
+ IF(SIMAG.LT.1D-6) THEN
+ AR(1,1) = XM2*COS(RMSS(31))
+ AR(2,2) = XMU*COS(RMSS(33))
+ AR(1,2) = SQRT(2D0)*XMW*SINB
+ AR(2,1) = SQRT(2D0)*XMW*COSB
+ IKNT=0
+ 300 CONTINUE
+ DO I=1,2
+ DO J=1,2
+ ZR(I,J)=0D0
+ ENDDO
+ ENDDO
+
+ DO I=1,2
+ DO J=1,2
+ DO K=1,2
+ DO L=1,2
+ ZR(I,J)=ZR(I,J)+UMIX(I,K)*AR(K,L)*VMIX(J,L)
+ ENDDO
+ ENDDO
+ ENDDO
+ ENDDO
+ VMIX(1,1)=VMIX(1,1)*SMW(1)/ZR(1,1)/100D0
+ VMIX(1,2)=VMIX(1,2)*SMW(1)/ZR(1,1)/100D0
+ VMIX(2,1)=VMIX(2,1)*SMW(2)/ZR(2,2)/100D0
+ VMIX(2,2)=VMIX(2,2)*SMW(2)/ZR(2,2)/100D0
+ IF(IKNT.EQ.2.AND.IFRC.EQ.0) THEN
+ CALL PYERRM(18,'(PYINOM:) Problem with Charginos')
+ ELSEIF(ZR(1,1).LT.0D0.OR.ZR(2,2).LT.0D0) THEN
+ IKNT=IKNT+1
+ GOTO 300
+ ENDIF
+C.....Must deal with phases
+ ELSE
+ CAR(1,1) = XM2*CMPLX(COS(RMSS(31)),SIN(RMSS(31)))
+ CAR(2,2) = XMU*CMPLX(COS(RMSS(33)),SIN(RMSS(33)))
+ CAR(1,2) = SQRT(2D0)*XMW*SINB*CMPLX(1D0,0D0)
+ CAR(2,1) = SQRT(2D0)*XMW*COSB*CMPLX(1D0,0D0)
+
+ IKNT=0
+ 310 CONTINUE
+ DO I=1,2
+ DO J=1,2
+ CAI(I,J)=CMPLX(0D0,0D0)
+ ENDDO
+ ENDDO
+
+ DO I=1,2
+ DO J=1,2
+ DO K=1,2
+ DO L=1,2
+ CAI(I,J)=CAI(I,J)+CMPLX(UMIX(I,K),-UMIXI(I,K))*CAR(K,L)*
+ & CMPLX(VMIX(J,L),VMIXI(J,L))
+ ENDDO
+ ENDDO
+ ENDDO
+ ENDDO
+
+ CA1=SMW(1)*CAI(1,1)/ABS(CAI(1,1))**2/100D0
+ CA2=SMW(2)*CAI(2,2)/ABS(CAI(2,2))**2/100D0
+ TEMPR=VMIX(1,1)
+ TEMPI=VMIXI(1,1)
+ VMIX(1,1)=TEMPR*DBLE(CA1)-TEMPI*DIMAG(CA1)
+ VMIXI(1,1)=TEMPI*DBLE(CA1)+TEMPR*DIMAG(CA1)
+ TEMPR=VMIX(1,2)
+ TEMPI=VMIXI(1,2)
+ VMIX(1,2)=TEMPR*DBLE(CA1)-TEMPI*DIMAG(CA1)
+ VMIXI(1,2)=TEMPI*DBLE(CA1)+TEMPR*DIMAG(CA1)
+ TEMPR=VMIX(2,1)
+ TEMPI=VMIXI(2,1)
+ VMIX(2,1)=TEMPR*DBLE(CA2)-TEMPI*DIMAG(CA2)
+ VMIXI(2,1)=TEMPI*DBLE(CA2)+TEMPR*DIMAG(CA2)
+ TEMPR=VMIX(2,2)
+ TEMPI=VMIXI(2,2)
+ VMIX(2,2)=TEMPR*DBLE(CA2)-TEMPI*DIMAG(CA2)
+ VMIXI(2,2)=TEMPI*DBLE(CA2)+TEMPR*DIMAG(CA2)
+ IF(IKNT.EQ.2.AND.IFRC.EQ.0) THEN
+ CALL PYERRM(18,'(PYINOM:) Problem with Charginos')
+ ELSEIF(DBLE(CA1).LT.0D0.OR.DBLE(CA2).LT.0D0.OR.
+ & ABS(IMAG(CA1)).GT.1D-3.OR.ABS(IMAG(CA2)).GT.1D-3) THEN
+ IKNT=IKNT+1
+ GOTO 310
+ ENDIF
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRNM3
+C...Calculates the running of M3, the SU(3) gluino mass parameter.
+
+ FUNCTION PYRNM3(RGUT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local variables.
+ DOUBLE PRECISION R
+ DOUBLE PRECISION TOL
+ EXTERNAL PYALPS
+ DOUBLE PRECISION PYALPS
+ DATA TOL/0.001D0/
+ DATA R/0.61803399D0/
+
+ C=1D0-R
+
+ BX=RGUT*PYALPS(RGUT**2)
+ AX=MIN(50D0,BX*0.5D0)
+ CX=MAX(2000D0,2D0*BX)
+
+ X0=AX
+ X3=CX
+ IF(ABS(CX-BX).GT.ABS(BX-AX))THEN
+ X1=BX
+ X2=BX+C*(CX-BX)
+ ELSE
+ X2=BX
+ X1=BX-C*(BX-AX)
+ ENDIF
+ AS1=PYALPS(X1**2)
+ F1=ABS(X1-RGUT*AS1)
+ AS2=PYALPS(X2**2)
+ F2=ABS(X2-RGUT*AS2)
+ 100 IF(ABS(X3-X0).GT.TOL*(ABS(X1)+ABS(X2))) THEN
+ IF(F2.LT.F1) THEN
+ X0=X1
+ X1=X2
+ X2=R*X1+C*X3
+ F1=F2
+ AS2=PYALPS(X2**2)
+ F2=ABS(X2-RGUT*AS2)
+ ELSE
+ X3=X2
+ X2=X1
+ X1=R*X2+C*X0
+ F2=F1
+ AS1=PYALPS(X1**2)
+ F1=ABS(X1-RGUT*AS1)
+ ENDIF
+ GOTO 100
+ ENDIF
+ IF(F1.LT.F2) THEN
+ PYRNM3=X1
+ XMIN=X1
+ ELSE
+ PYRNM3=X2
+ XMIN=X2
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYEIG4
+C...Finds eigenvalues and eigenvectors to a 4 * 4 matrix.
+C...Specific application: mixing in neutralino sector.
+
+ SUBROUTINE PYEIG4(A,W,Z)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Arrays: in call and local.
+ DIMENSION A(4,4),W(4),Z(4,4),X(4),D(4,4),E(4)
+
+C...Coefficients of fourth-degree equation from matrix.
+C...x**4 + b3 * x**3 + b2 * x**2 + b1 * x + b0 = 0.
+ B3=-(A(1,1)+A(2,2)+A(3,3)+A(4,4))
+ B2=0D0
+ DO 110 I=1,3
+ DO 100 J=I+1,4
+ B2=B2+A(I,I)*A(J,J)-A(I,J)*A(J,I)
+ 100 CONTINUE
+ 110 CONTINUE
+ B1=0D0
+ B0=0D0
+ DO 120 I=1,4
+ I1=MOD(I,4)+1
+ I2=MOD(I+1,4)+1
+ I3=MOD(I+2,4)+1
+ B1=B1+A(I,I)*(-A(I1,I1)*A(I2,I2)+A(I1,I2)*A(I2,I1)+
+ & A(I1,I3)*A(I3,I1)+A(I2,I3)*A(I3,I2))-
+ & A(I,I1)*A(I1,I2)*A(I2,I)-A(I,I2)*A(I2,I1)*A(I1,I)
+ B0=B0+(-1D0)**(I+1)*A(1,I)*(
+ & A(2,I1)*(A(3,I2)*A(4,I3)-A(3,I3)*A(4,I2))+
+ & A(2,I2)*(A(3,I3)*A(4,I1)-A(3,I1)*A(4,I3))+
+ & A(2,I3)*(A(3,I1)*A(4,I2)-A(3,I2)*A(4,I1)))
+ 120 CONTINUE
+
+C...Coefficients of third-degree equation needed for
+C...separation into two second-degree equations.
+C...u**3 + c2 * u**2 + c1 * u + c0 = 0.
+ C2=-B2
+ C1=B1*B3-4D0*B0
+ C0=-B1**2-B0*B3**2+4D0*B0*B2
+ CQ=C1/3D0-C2**2/9D0
+ CR=C1*C2/6D0-C0/2D0-C2**3/27D0
+ CQR=CQ**3+CR**2
+
+C...Cases with one or three real roots.
+ IF(CQR.GE.0D0) THEN
+ S1=(CR+SQRT(CQR))**(1D0/3D0)
+ S2=(CR-SQRT(CQR))**(1D0/3D0)
+ U=S1+S2-C2/3D0
+ ELSE
+ SABS=SQRT(-CQ)
+ THE=ACOS(CR/SABS**3)/3D0
+ SRE=SABS*COS(THE)
+ U=2D0*SRE-C2/3D0
+ ENDIF
+
+C...Find and solve two second-degree equations.
+ P1=B3/2D0-SQRT(B3**2/4D0+U-B2)
+ P2=B3/2D0+SQRT(B3**2/4D0+U-B2)
+ Q1=U/2D0+SQRT(U**2/4D0-B0)
+ Q2=U/2D0-SQRT(U**2/4D0-B0)
+ IF(ABS(P1*Q1+P2*Q2-B1).LT.ABS(P1*Q2+P2*Q1-B1)) THEN
+ QSAV=Q1
+ Q1=Q2
+ Q2=QSAV
+ ENDIF
+ X(1)=-P1/2D0+SQRT(P1**2/4D0-Q1)
+ X(2)=-P1/2D0-SQRT(P1**2/4D0-Q1)
+ X(3)=-P2/2D0+SQRT(P2**2/4D0-Q2)
+ X(4)=-P2/2D0-SQRT(P2**2/4D0-Q2)
+
+C...Order eigenvalues in asceding mass.
+ W(1)=X(1)
+ DO 150 I1=2,4
+ DO 130 I2=I1-1,1,-1
+ IF(ABS(X(I1)).GE.ABS(W(I2))) GOTO 140
+ W(I2+1)=W(I2)
+ 130 CONTINUE
+ 140 W(I2+1)=X(I1)
+ 150 CONTINUE
+
+C...Find equation system for eigenvectors.
+ DO 250 I=1,4
+ DO 170 J1=1,4
+ D(J1,J1)=A(J1,J1)-W(I)
+ DO 160 J2=J1+1,4
+ D(J1,J2)=A(J1,J2)
+ D(J2,J1)=A(J2,J1)
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...Find largest element in matrix.
+ DAMAX=0D0
+ DO 190 J1=1,4
+ DO 180 J2=1,4
+ IF(ABS(D(J1,J2)).LE.DAMAX) GOTO 180
+ JA=J1
+ JB=J2
+ DAMAX=ABS(D(J1,J2))
+ 180 CONTINUE
+ 190 CONTINUE
+
+C...Subtract others by multiple of row selected above.
+ DAMAX=0D0
+ DO 210 J3=JA+1,JA+3
+ J1=J3-4*((J3-1)/4)
+ RL=D(J1,JB)/D(JA,JB)
+ DO 200 J2=1,4
+ D(J1,J2)=D(J1,J2)-RL*D(JA,J2)
+ IF(ABS(D(J1,J2)).LE.DAMAX) GOTO 200
+ JC=J1
+ JD=J2
+ DAMAX=ABS(D(J1,J2))
+ 200 CONTINUE
+ 210 CONTINUE
+
+C...Do one more subtraction of a row.
+ DAMAX=0D0
+ DO 230 J3=JC+1,JC+3
+ J1=J3-4*((J3-1)/4)
+ IF(J1.EQ.JA) GOTO 230
+ RL=D(J1,JD)/D(JC,JD)
+ DO 220 J2=1,4
+ IF(J2.EQ.JB) GOTO 220
+ D(J1,J2)=D(J1,J2)-RL*D(JC,J2)
+ IF(ABS(D(J1,J2)).LE.DAMAX) GOTO 220
+ JE=J1
+ DAMAX=ABS(D(J1,J2))
+ 220 CONTINUE
+ 230 CONTINUE
+
+C...Construct unnormalized eigenvector.
+ JF1=JD+1-4*(JD/4)
+ JF2=JD+2-4*((JD+1)/4)
+ IF(JF1.EQ.JB) JF1=JD+3-4*((JD+2)/4)
+ IF(JF2.EQ.JB) JF2=JD+3-4*((JD+2)/4)
+ E(JF1)=-D(JE,JF2)
+ E(JF2)=D(JE,JF1)
+ E(JD)=-(D(JC,JF1)*E(JF1)+D(JC,JF2)*E(JF2))/D(JC,JD)
+ E(JB)=-(D(JA,JF1)*E(JF1)+D(JA,JF2)*E(JF2)+D(JA,JD)*E(JD))/
+ & D(JA,JB)
+
+C...Normalize and fill in final array.
+ EA=SQRT(E(1)**2+E(2)**2+E(3)**2+E(4)**2)
+ SGN=(-1D0)**INT(PYR(0)+0.5D0)
+ DO 240 J=1,4
+ Z(I,J)=SGN*E(J)/EA
+ 240 CONTINUE
+ 250 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYHGGM
+C...Determines the Higgs boson mass spectrum using several inputs.
+
+ SUBROUTINE PYHGGM(ALPHA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYMSSM/
+
+C...Local variables.
+ DOUBLE PRECISION AT,AB,XMU,TANB
+ DOUBLE PRECISION ALPHA
+ INTEGER IHOPT
+ DOUBLE PRECISION DMA,DTANB,DMQ,DMUR,DMTOP,DAU,DAD
+ DOUBLE PRECISION DMU,DMH,DHM,DMHCH,DSA,DCA,DTANBA
+ DOUBLE PRECISION DMC,DMDR,DMHP,DHMP,DAMP
+ DOUBLE PRECISION DSTOP1,DSTOP2,DSBOT1,DSBOT2
+
+ IHOPT=IMSS(4)
+ IF(IHOPT.EQ.2) THEN
+ ALPHA=RMSS(18)
+ RETURN
+ ENDIF
+ AT=RMSS(16)
+ AB=RMSS(15)
+ DMGL=RMSS(3)
+ XMU=RMSS(4)
+ TANB=RMSS(5)
+
+ DMA=RMSS(19)
+ DTANB=TANB
+ DMQ=RMSS(10)
+ DMUR=RMSS(12)
+ DMDR=RMSS(11)
+ DMTOP=PMAS(6,1)
+ DMC=PMAS(PYCOMP(KSUSY1+37),1)
+ DAU=AT
+ DAD=AB
+ DMU=XMU
+ RMSS(40)=0D0
+ RMSS(41)=0D0
+
+ IF(IHOPT.EQ.0) THEN
+ CALL PYSUBH (DMA,DTANB,DMQ,DMUR,DMTOP,DAU,DAD,DMU,DMH,DHM,
+ & DMHCH,DSA,DCA,DTANBA)
+ ELSEIF(IHOPT.EQ.1) THEN
+ CALL PYSUBH (DMA,DTANB,DMQ,DMUR,DMTOP,DAU,DAD,DMU,DMH,DHM,
+ & DMHCH,DSA,DCA,DTANBA)
+ CALL PYPOLE(3,DMC,DMA,DTANB,DMQ,DMUR,DMDR,DMTOP,DAU,DAD,DMU,
+ & DMH,DMHP,DHM,DHMP,DAMP,DSA,DCA,
+ & DSTOP1,DSTOP2,DSBOT1,DSBOT2,DTANBA,DMGL,DDT,DDB)
+ RMSS(40)=DDT
+ RMSS(41)=DDB
+ DMH=DMHP
+ DHM=DHMP
+ DMA=DAMP
+ IF(ABS(PMAS(PYCOMP(1000006),1)-DSTOP2).GT.5D-1) THEN
+ WRITE(MSTU(11),*) ' STOP1 MASS DOES NOT MATCH IN PYHGGM '
+ WRITE(MSTU(11),*) ' STOP1 MASSES = ',
+ & PMAS(PYCOMP(1000006),1),DSTOP2
+ ENDIF
+ IF(ABS(PMAS(PYCOMP(2000006),1)-DSTOP1).GT.5D-1) THEN
+ WRITE(MSTU(11),*) ' STOP2 MASS DOES NOT MATCH IN PYHGGM '
+ WRITE(MSTU(11),*) ' STOP2 MASSES = ',
+ & PMAS(PYCOMP(2000006),1),DSTOP1
+ ENDIF
+ IF(ABS(PMAS(PYCOMP(1000005),1)-DSBOT2).GT.5D-1) THEN
+ WRITE(MSTU(11),*) ' SBOT1 MASS DOES NOT MATCH IN PYHGGM '
+ WRITE(MSTU(11),*) ' SBOT1 MASSES = ',
+ & PMAS(PYCOMP(1000005),1),DSBOT2
+ ENDIF
+ IF(ABS(PMAS(PYCOMP(2000005),1)-DSBOT1).GT.5D-1) THEN
+ WRITE(MSTU(11),*) ' SBOT2 MASS DOES NOT MATCH IN PYHGGM '
+ WRITE(MSTU(11),*) ' SBOT2 MASSES = ',
+ & PMAS(PYCOMP(2000005),1),DSBOT1
+ ENDIF
+
+ ELSEIF (IHOPT.EQ.3) THEN
+c...Use FeynHiggs to fix Higgs sector (cf feynhiggs.de)
+C...Currently only available for SLHA spectrum read-in.
+ IF (IMSS(1).NE.11.AND.IMSS(1).NE.12.AND.IMSS(1).NE.13) THEN
+ CALL PYERRM(11,'(PYHGGM:) FeynHiggs needs SLHA or ISASUSY'
+ & //' spectrum, change IMSS(1) or IMSS(4) option.')
+ ENDIF
+ ALPHA=RMSS(18)
+ RETURN
+ ENDIF
+
+ ALPHA=ACOS(DCA)
+
+ PMAS(25,1)=DMH
+ PMAS(35,1)=DHM
+ PMAS(36,1)=DMA
+ PMAS(37,1)=DMHCH
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSUBH
+C...This routine computes the renormalization group improved
+C...values of Higgs masses and couplings in the MSSM.
+
+C...Program based on the work by M. Carena, J.R. Espinosa,
+c...M. Quiros and C.E.M. Wagner, CERN-preprint CERN-TH/95-45
+
+C...Input: MA,TANB = TAN(BETA),MQ,MUR,MTOP,AU,AD,MU
+C...All masses in GeV units. MA is the CP-odd Higgs mass,
+C...MTOP is the physical top mass, MQ and MUR are the soft
+C...supersymmetry breaking mass parameters of left handed
+C...and right handed stops respectively, AU and AD are the
+C...stop and sbottom trilinear soft breaking terms,
+C...respectively, and MU is the supersymmetric
+C...Higgs mass parameter. We use the conventions from
+C...the physics report of Haber and Kane: left right
+C...stop mixing term proportional to (AU - MU/TANB)
+C...We use as input TANB defined at the scale MTOP
+
+C...Output: MH,HM,MHCH, SA = SIN(ALPHA), CA= COS(ALPHA), TANBA
+C...where MH and HM are the lightest and heaviest CP-even
+C...Higgs masses, MHCH is the charged Higgs mass and
+C...ALPHA is the Higgs mixing angle
+C...TANBA is the angle TANB at the CP-odd Higgs mass scale
+
+C...Range of validity:
+C...(STOP1**2 - STOP2**2)/(STOP2**2 + STOP1**2) < 0.5
+C...(SBOT1**2 - SBOT2**2)/(SBOT2**2 + SBOT2**2) < 0.5
+C...where STOP1, STOP2, SBOT1 and SBOT2 are the stop and
+C...are the sbottom mass eigenvalues, respectively. This
+C...range automatically excludes the existence of tachyons.
+C...For the charged Higgs mass computation, the method is
+C...valid if
+C...2 * |MB * AD* TANB| < M_SUSY**2, 2 * |MTOP * AU| < M_SUSY**2
+C...2 * |MB * MU * TANB| < M_SUSY**2, 2 * |MTOP * MU| < M_SUSY**2
+C...where M_SUSY**2 is the average of the squared stop mass
+C...eigenvalues, M_SUSY**2 = (STOP1**2 + STOP2**2)/2. The sbottom
+C...masses have been assumed to be of order of the stop ones
+C...M_SUSY**2 = (MQ**2 + MUR**2)*0.5 + MTOP**2
+
+ SUBROUTINE PYSUBH (XMA,TANB,XMQ,XMUR,XMTOP,AU,AD,XMU,XMH,XHM,
+ &XMHCH,SA,CA,TANBA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYHTRI/HHH(7)
+ SAVE /PYDAT1/,/PYDAT2/
+
+C...Local variables.
+ DOUBLE PRECISION PYALEM,PYALPS
+ DOUBLE PRECISION TANB,XMQ,XMUR,XMTOP,AU,AD,XMU,XMH,XHM
+ DOUBLE PRECISION XMHCH,SA,CA
+ DOUBLE PRECISION XMA,AEM,ALP1,ALP2,ALPH3Z,V,PI
+ DOUBLE PRECISION Q02
+ DOUBLE PRECISION TANBA,TANBT,XMB,ALP3
+ DOUBLE PRECISION RMTOP,XMS,T,SINB,COSB
+ DOUBLE PRECISION XLAM1,XLAM2,XLAM3,XLAM4,XLAM5,XLAM6
+ DOUBLE PRECISION XLAM7,XAU,XAD,G1,G2,G3,HU,HD,HU2
+ DOUBLE PRECISION HD2,HU4,HD4,SINBT,COSBT
+ DOUBLE PRECISION TRM2,DETM2,XMH2,XHM2,XMHCH2
+ DOUBLE PRECISION SINALP,COSALP,AUD,PI2,XMS2,XMS4,AD2
+ DOUBLE PRECISION AU2,XMU2,XMZ,XMS3
+
+ XMZ = PMAS(23,1)
+ Q02=XMZ**2
+ AEM=PYALEM(Q02)
+ ALP1=AEM/(1D0-PARU(102))
+ ALP2=AEM/PARU(102)
+ ALPH3Z=PYALPS(Q02)
+
+ ALP1 = 0.0101D0
+ ALP2 = 0.0337D0
+ ALPH3Z = 0.12D0
+
+ V = 174.1D0
+ PI = PARU(1)
+ TANBA = TANB
+ TANBT = TANB
+
+C...MBOTTOM(MTOP) = 3. GEV
+ XMB = PYMRUN(5,XMTOP**2)
+ ALP3 = ALPH3Z/(1D0 +(11D0 - 10D0/3D0)/4D0/PI*ALPH3Z*
+ &LOG(XMTOP**2/XMZ**2))
+
+C...RMTOP= RUNNING TOP QUARK MASS
+ RMTOP = XMTOP/(1D0+4D0*ALP3/3D0/PI)
+ XMS = ((XMQ**2 + XMUR**2)/2D0 + XMTOP**2)**0.5D0
+ T = LOG(XMS**2/XMTOP**2)
+ SINB = TANB/((1D0 + TANB**2)**0.5D0)
+ COSB = SINB/TANB
+C...IF(MA.LE.XMTOP) TANBA = TANBT
+ IF(XMA.GT.XMTOP)
+ &TANBA = TANBT*(1D0-3D0/32D0/PI**2*
+ &(RMTOP**2/V**2/SINB**2-XMB**2/V**2/COSB**2)*
+ &LOG(XMA**2/XMTOP**2))
+
+ SINBT = TANBT/SQRT(1D0 + TANBT**2)
+ COSBT = 1D0/SQRT(1D0 + TANBT**2)
+C COS2BT = (TANBT**2 - 1D0)/(TANBT**2 + 1D0)
+ G1 = SQRT(ALP1*4D0*PI)
+ G2 = SQRT(ALP2*4D0*PI)
+ G3 = SQRT(ALP3*4D0*PI)
+ HU = RMTOP/V/SINBT
+ HD = XMB/V/COSBT
+ HU2=HU*HU
+ HD2=HD*HD
+ HU4=HU2*HU2
+ HD4=HD2*HD2
+ AU2=AU**2
+ AD2=AD**2
+ XMS2=XMS**2
+ XMS3=XMS**3
+ XMS4=XMS2*XMS2
+ XMU2=XMU*XMU
+ PI2=PI*PI
+
+ XAU = (2D0*AU2/XMS2)*(1D0 - AU2/12D0/XMS2)
+ XAD = (2D0*AD2/XMS2)*(1D0 - AD2/12D0/XMS2)
+ AUD = (-6D0*XMU2/XMS2 - ( XMU2- AD*AU)**2/XMS4
+ &+ 3D0*(AU + AD)**2/XMS2)/6D0
+ XLAM1 = ((G1**2 + G2**2)/4D0)*(1D0-3D0*HD2*T/8D0/PI2)
+ &+(3D0*HD4/8D0/PI2) * (T + XAD/2D0 + (3D0*HD2/2D0 + HU2/2D0
+ &- 8D0*G3**2) * (XAD*T + T**2)/16D0/PI2)
+ &-(3D0*HU4* XMU**4/96D0/PI2/XMS4) * (1+ (9D0*HU2 -5D0* HD2
+ &- 16D0*G3**2) *T/16D0/PI2)
+ XLAM2 = ((G1**2 + G2**2)/4D0)*(1D0-3D0*HU2*T/8D0/PI2)
+ &+(3D0*HU4/8D0/PI2) * (T + XAU/2D0 + (3D0*HU2/2D0 + HD2/2D0
+ &- 8D0*G3**2) * (XAU*T + T**2)/16D0/PI2)
+ &-(3D0*HD4* XMU**4/96D0/PI2/XMS4) * (1+ (9D0*HD2 -5D0* HU2
+ &- 16D0*G3**2) *T/16D0/PI2)
+ XLAM3 = ((G2**2 - G1**2)/4D0)*(1D0-3D0*
+ &(HU2 + HD2)*T/16D0/PI2)
+ &+(6D0*HU2*HD2/16D0/PI2) * (T + AUD/2D0 + (HU2 + HD2
+ &- 8D0*G3**2) * (AUD*T + T**2)/16D0/PI2)
+ &+(3D0*HU4/96D0/PI2) * (3D0*XMU2/XMS2 - XMU2*AU2/
+ &XMS4)* (1D0+ (6D0*HU2 -2D0* HD2/2D0
+ &- 16D0*G3**2) *T/16D0/PI2)
+ &+(3D0*HD4/96D0/PI2) * (3D0*XMU2/XMS2 - XMU2*AD2/
+ &XMS4)*(1D0+ (6D0*HD2 -2D0* HU2
+ &- 16D0*G3**2) *T/16D0/PI2)
+ XLAM4 = (- G2**2/2D0)*(1D0-3D0*(HU2 + HD2)*T/16D0/PI2)
+ &-(6D0*HU2*HD2/16D0/PI2) * (T + AUD/2D0 + (HU2 + HD2
+ &- 8D0*G3**2) * (AUD*T + T**2)/16D0/PI2)
+ &+(3D0*HU4/96D0/PI2) * (3D0*XMU2/XMS2 - XMU2*AU2/
+ &XMS4)*
+ &(1+ (6D0*HU2 -2D0* HD2
+ &- 16D0*G3**2) *T/16D0/PI2)
+ &+(3D0*HD4/96D0/PI2) * (3D0*XMU2/XMS2 - XMU2*AD2/
+ &XMS4)*
+ &(1+ (6D0*HD2 -2D0* HU2/2D0
+ &- 16D0*G3**2) *T/16D0/PI2)
+ XLAM5 = -(3D0*HU4* XMU2*AU2/96D0/PI2/XMS4) *
+ &(1- (2D0*HD2 -6D0* HU2 + 16D0*G3**2) *T/16D0/PI2)
+ &-(3D0*HD4* XMU2*AD2/96D0/PI2/XMS4) *
+ &(1- (2D0*HU2 -6D0* HD2 + 16D0*G3**2) *T/16D0/PI2)
+ XLAM6 = (3D0*HU4* XMU**3*AU/96D0/PI2/XMS4) *
+ &(1- (7D0*HD2/2D0 -15D0* HU2/2D0 + 16D0*G3**2) *T/16D0/PI2)
+ &+(3D0*HD4* XMU *(AD**3/XMS3 - 6D0*AD/XMS )/96D0/PI2/XMS) *
+ &(1- (HU2/2D0 -9D0* HD2/2D0 + 16D0*G3**2) *T/16D0/PI2)
+ XLAM7 = (3D0*HD4* XMU**3*AD/96D0/PI2/XMS4) *
+ &(1- (7D0*HU2/2D0 -15D0* HD2/2D0 + 16D0*G3**2) *T/16D0/PI2)
+ &+(3D0*HU4* XMU *(AU**3/XMS3 - 6D0*AU/XMS )/96D0/PI2/XMS) *
+ &(1- (HD2/2D0 -9D0* HU2/2D0 + 16D0*G3**2) *T/16D0/PI2)
+ HHH(1)=XLAM1
+ HHH(2)=XLAM2
+ HHH(3)=XLAM3
+ HHH(4)=XLAM4
+ HHH(5)=XLAM5
+ HHH(6)=XLAM6
+ HHH(7)=XLAM7
+ TRM2 = XMA**2 + 2D0*V**2* (XLAM1* COSBT**2 +
+ &2D0* XLAM6*SINBT*COSBT
+ &+ XLAM5*SINBT**2 + XLAM2* SINBT**2 + 2D0* XLAM7*SINBT*COSBT
+ &+ XLAM5*COSBT**2)
+ DETM2 = 4D0*V**4*(-(SINBT*COSBT*(XLAM3 + XLAM4) +
+ &XLAM6*COSBT**2
+ &+ XLAM7* SINBT**2)**2 + (XLAM1* COSBT**2 +
+ &2D0* XLAM6* COSBT*SINBT
+ &+ XLAM5*SINBT**2)*(XLAM2* SINBT**2 +2D0* XLAM7* COSBT*SINBT
+ &+ XLAM5*COSBT**2)) + XMA**2*2D0*V**2 *
+ &((XLAM1* COSBT**2 +2D0*
+ &XLAM6* COSBT*SINBT + XLAM5*SINBT**2)*COSBT**2 +
+ &(XLAM2* SINBT**2 +2D0* XLAM7* COSBT*SINBT + XLAM5*COSBT**2)
+ &*SINBT**2
+ &+2D0*SINBT*COSBT* (SINBT*COSBT*(XLAM3
+ &+ XLAM4) + XLAM6*COSBT**2
+ &+ XLAM7* SINBT**2))
+
+ XMH2 = (TRM2 - SQRT(TRM2**2 - 4D0* DETM2))/2D0
+ XHM2 = (TRM2 + SQRT(TRM2**2 - 4D0* DETM2))/2D0
+ XHM = SQRT(XHM2)
+ XMH = SQRT(XMH2)
+ XMHCH2 = XMA**2 + (XLAM5 - XLAM4)* V**2
+ XMHCH = SQRT(XMHCH2)
+
+ SINALP = SQRT(((TRM2**2 - 4D0* DETM2)**0.5D0) -
+ &((2D0*V**2*(XLAM1* COSBT**2 + 2D0*
+ &XLAM6* COSBT*SINBT
+ &+ XLAM5*SINBT**2) + XMA**2*SINBT**2)
+ &- (2D0*V**2*(XLAM2* SINBT**2 +2D0* XLAM7* COSBT*SINBT
+ &+ XLAM5*COSBT**2) + XMA**2*COSBT**2)))/
+ &SQRT(((TRM2**2 - 4D0* DETM2)**0.5D0))/2D0**0.5D0
+
+ COSALP = (2D0*(2D0*V**2*(SINBT*COSBT*(XLAM3 + XLAM4) +
+ &XLAM6*COSBT**2 + XLAM7* SINBT**2) -
+ &XMA**2*SINBT*COSBT))/2D0**0.5D0/
+ &SQRT(((TRM2**2 - 4D0* DETM2)**0.5D0)*
+ &(((TRM2**2 - 4D0* DETM2)**0.5D0) -
+ &((2D0*V**2*(XLAM1* COSBT**2 + 2D0*
+ &XLAM6* COSBT*SINBT
+ &+ XLAM5*SINBT**2) + XMA**2*SINBT**2)
+ &- (2D0*V**2*(XLAM2* SINBT**2 +2D0* XLAM7* COSBT*SINBT
+ &+ XLAM5*COSBT**2) + XMA**2*COSBT**2))))
+
+ SA = -SINALP
+ CA = -COSALP
+
+ 100 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPOLE
+C...This subroutine computes the CP-even higgs and CP-odd pole
+c...Higgs masses and mixing angles.
+
+C...Program based on the work by M. Carena, M. Quiros
+C...and C.E.M. Wagner, "Effective potential methods and
+C...the Higgs mass spectrum in the MSSM", CERN-TH/95-157
+
+C...Inputs: IHIGGS(explained below),MCHI,MA,TANB,MQ,MUR,MDR,MTOP,
+C...AT,AB,MU
+C...where MCHI is the largest chargino mass, MA is the running
+C...CP-odd higgs mass, TANB is the value of the ratio of vacuum
+C...expectaion values at the scale MTOP, MQ is the third generation
+C...left handed squark mass parameter, MUR is the third generation
+C...right handed stop mass parameter, MDR is the third generation
+C...right handed sbottom mass parameter, MTOP is the pole top quark
+C...mass; AT,AB are the soft supersymmetry breaking trilinear
+C...couplings of the stop and sbottoms, respectively, and MU is the
+C...supersymmetric mass parameter
+
+C...The parameter IHIGGS=0,1,2,3 corresponds to the number of
+C...Higgses whose pole mass is computed. If IHIGGS=0 only running
+C...masses are given, what makes the running of the program
+c...much faster and it is quite generally a good approximation
+c...(for a theoretical discussion see ref. above). If IHIGGS=1,
+C...only the pole mass for H is computed. If IHIGGS=2, then h and H,
+c...and if IHIGGS=3, then h,H,A polarizations are computed
+
+C...Output: MH and MHP which are the lightest CP-even Higgs running
+C...and pole masses, respectively; HM and HMP are the heaviest CP-even
+C...Higgs running and pole masses, repectively; SA and CA are the
+C...SIN(ALPHA) and COS(ALPHA) where ALPHA is the Higgs mixing angle
+C...AMP is the CP-odd Higgs pole mass. STOP1,STOP2,SBOT1 and SBOT2
+C...are the stop and sbottom mass eigenvalues. Finally, TANBA is
+C...the value of TANB at the CP-odd Higgs mass scale
+
+C...This subroutine makes use of CERN library subroutine
+C...integration package, which makes the computation of the
+C...pole Higgs masses somewhat faster. We thank P. Janot for this
+C...improvement. Those who are not able to call the CERN
+C...libraries, please use the subroutine SUBHPOLE2.F, which
+C...although somewhat slower, gives identical results
+
+ SUBROUTINE PYPOLE(IHIGGS,XMC,XMA,TANB,XMQ,XMUR,XMDR,XMT,AT,AB,XMU,
+ &XMH,XMHP,HM,HMP,AMP,SA,CA,STOP1,STOP2,SBOT1,SBOT2,TANBA,XMG,DT,DB)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...Parameters.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local variables.
+ DIMENSION DELTA(2,2),COUPT(2,2),T(2,2),SSTOP2(2),
+ &SSBOT2(2),B(2,2),COUPB(2,2),
+ &HCOUPT(2,2),HCOUPB(2,2),
+ &ACOUPT(2,2),ACOUPB(2,2),PR(3), POLAR(3)
+
+ DELTA(1,1) = 1D0
+ DELTA(2,2) = 1D0
+ DELTA(1,2) = 0D0
+ DELTA(2,1) = 0D0
+ V = 174.1D0
+ XMZ=91.18D0
+ PI=PARU(1)
+ RXMT=PYMRUN(6,XMT**2)
+ CALL PYRGHM(XMC,XMA,TANB,XMQ,XMUR,XMDR,XMT,AT,AB,
+ &XMU,XMH,HM,XMCH,SA,CA,SAB,CAB,TANBA,XMG,DT,DB)
+
+ SINB = TANB/(TANB**2+1D0)**0.5D0
+ COSB = 1D0/(TANB**2+1D0)**0.5D0
+ COS2B = SINB**2 - COSB**2
+ SINBPA = SINB*CA + COSB*SA
+ COSBPA = COSB*CA - SINB*SA
+ RMBOT = PYMRUN(5,XMT**2)
+ XMQ2 = XMQ**2
+ XMUR2 = XMUR**2
+ IF(XMUR.LT.0D0) XMUR2=-XMUR2
+ XMDR2 = XMDR**2
+ XMST11 = RXMT**2 + XMQ2 - 0.35D0*XMZ**2*COS2B
+ XMST22 = RXMT**2 + XMUR2 - 0.15D0*XMZ**2*COS2B
+ IF(XMST11.LT.0D0) GOTO 500
+ IF(XMST22.LT.0D0) GOTO 500
+ XMSB11 = RMBOT**2 + XMQ2 + 0.42D0*XMZ**2*COS2B
+ XMSB22 = RMBOT**2 + XMDR2 + 0.08D0*XMZ**2*COS2B
+ IF(XMSB11.LT.0D0) GOTO 500
+ IF(XMSB22.LT.0D0) GOTO 500
+C WMST11 = RXMT**2 + XMQ2
+C WMST22 = RXMT**2 + XMUR2
+ XMST12 = RXMT*(AT - XMU/TANB)
+ XMSB12 = RMBOT*(AB - XMU*TANB)
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C...STOP EIGENVALUES CALCULATION
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ STOP12 = 0.5D0*(XMST11+XMST22) +
+ &0.5D0*((XMST11+XMST22)**2 -
+ &4D0*(XMST11*XMST22 - XMST12**2))**0.5D0
+ STOP22 = 0.5D0*(XMST11+XMST22) -
+ &0.5D0*((XMST11+XMST22)**2 - 4D0*(XMST11*XMST22 -
+ &XMST12**2))**0.5D0
+
+ IF(STOP22.LT.0D0) GOTO 500
+ SSTOP2(1) = STOP12
+ SSTOP2(2) = STOP22
+ STOP1 = STOP12**0.5D0
+ STOP2 = STOP22**0.5D0
+C STOP1W = STOP1
+C STOP2W = STOP2
+
+ IF(XMST12.EQ.0D0) XST11 = 1D0
+ IF(XMST12.EQ.0D0) XST12 = 0D0
+ IF(XMST12.EQ.0D0) XST21 = 0D0
+ IF(XMST12.EQ.0D0) XST22 = 1D0
+
+ IF(XMST12.EQ.0D0) GOTO 110
+
+ 100 XST11 = XMST12/(XMST12**2+(XMST11-STOP12)**2)**0.5D0
+ XST12 = - (XMST11-STOP12)/(XMST12**2+(XMST11-STOP12)**2)**0.5D0
+ XST21 = XMST12/(XMST12**2+(XMST11-STOP22)**2)**0.5D0
+ XST22 = - (XMST11-STOP22)/(XMST12**2+(XMST11-STOP22)**2)**0.5D0
+
+ 110 T(1,1) = XST11
+ T(2,2) = XST22
+ T(1,2) = XST12
+ T(2,1) = XST21
+
+ SBOT12 = 0.5D0*(XMSB11+XMSB22) +
+ &0.5D0*((XMSB11+XMSB22)**2 -
+ &4D0*(XMSB11*XMSB22 - XMSB12**2))**0.5D0
+ SBOT22 = 0.5D0*(XMSB11+XMSB22) -
+ &0.5D0*((XMSB11+XMSB22)**2 - 4D0*(XMSB11*XMSB22 -
+ &XMSB12**2))**0.5D0
+ IF(SBOT22.LT.0D0) GOTO 500
+ SBOT1 = SBOT12**0.5D0
+ SBOT2 = SBOT22**0.5D0
+
+ SSBOT2(1) = SBOT12
+ SSBOT2(2) = SBOT22
+
+ IF(XMSB12.EQ.0D0) XSB11 = 1D0
+ IF(XMSB12.EQ.0D0) XSB12 = 0D0
+ IF(XMSB12.EQ.0D0) XSB21 = 0D0
+ IF(XMSB12.EQ.0D0) XSB22 = 1D0
+
+ IF(XMSB12.EQ.0D0) GOTO 130
+
+ 120 XSB11 = XMSB12/(XMSB12**2+(XMSB11-SBOT12)**2)**0.5D0
+ XSB12 = - (XMSB11-SBOT12)/(XMSB12**2+(XMSB11-SBOT12)**2)**0.5D0
+ XSB21 = XMSB12/(XMSB12**2+(XMSB11-SBOT22)**2)**0.5D0
+ XSB22 = - (XMSB11-SBOT22)/(XMSB12**2+(XMSB11-SBOT22)**2)**0.5D0
+
+ 130 B(1,1) = XSB11
+ B(2,2) = XSB22
+ B(1,2) = XSB12
+ B(2,1) = XSB21
+
+
+ SINT = 0.2320D0
+ SQR = DSQRT(2D0)
+ VP = 174.1D0*SQR
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C...STARTING OF LIGHT HIGGS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ IF(IHIGGS.EQ.0) GOTO 490
+
+ DO 150 I = 1,2
+ DO 140 J = 1,2
+ COUPT(I,J) =
+ & SINT*XMZ**2*2D0*SQR/174.1D0/3D0*SINBPA*(DELTA(I,J) +
+ & (3D0 - 8D0*SINT)/4D0/SINT*T(1,I)*T(1,J))
+ & -RXMT**2/174.1D0**2*VP/SINB*CA*DELTA(I,J)
+ & -RXMT/VP/SINB*(AT*CA + XMU*SA)*(T(1,I)*T(2,J) +
+ & T(1,J)*T(2,I))
+ 140 CONTINUE
+ 150 CONTINUE
+
+
+ DO 170 I = 1,2
+ DO 160 J = 1,2
+ COUPB(I,J) =
+ & -SINT*XMZ**2*2D0*SQR/174.1D0/6D0*SINBPA*(DELTA(I,J) +
+ & (3D0 - 4D0*SINT)/2D0/SINT*B(1,I)*B(1,J))
+ & +RMBOT**2/174.1D0**2*VP/COSB*SA*DELTA(I,J)
+ & +RMBOT/VP/COSB*(AB*SA + XMU*CA)*(B(1,I)*B(2,J) +
+ & B(1,J)*B(2,I))
+ 160 CONTINUE
+ 170 CONTINUE
+
+ PRUN = XMH
+ EPS = 1D-4*PRUN
+ ITER = 0
+ 180 ITER = ITER + 1
+ DO 230 I3 = 1,3
+
+ PR(I3)=PRUN+(I3-2)*EPS/2
+ P2=PR(I3)**2
+ POLT = 0D0
+ DO 200 I = 1,2
+ DO 190 J = 1,2
+ POLT = POLT + COUPT(I,J)**2*3D0*
+ & PYFINT(P2,SSTOP2(I),SSTOP2(J))/16D0/PI**2
+ 190 CONTINUE
+ 200 CONTINUE
+
+ POLB = 0D0
+ DO 220 I = 1,2
+ DO 210 J = 1,2
+ POLB = POLB + COUPB(I,J)**2*3D0*
+ & PYFINT(P2,SSBOT2(I),SSBOT2(J))/16D0/PI**2
+ 210 CONTINUE
+ 220 CONTINUE
+C RXMT2 = RXMT**2
+ XMT2=XMT**2
+
+ POLTT =
+ & 3D0*RXMT**2/8D0/PI**2/ V **2*
+ & CA**2/SINB**2 *
+ & (-2D0*XMT**2+0.5D0*P2)*
+ & PYFINT(P2,XMT2,XMT2)
+
+ POL = POLT + POLB + POLTT
+ POLAR(I3) = P2 - XMH**2 - POL
+ 230 CONTINUE
+ DERIV = (POLAR(3)-POLAR(1))/EPS
+ DRUN = - POLAR(2)/DERIV
+ PRUN = PRUN + DRUN
+ P2 = PRUN**2
+ IF( ABS(DRUN) .LT. 1D-4 .OR.ITER.GT.500) GOTO 240
+ GOTO 180
+ 240 CONTINUE
+
+ XMHP = DSQRT(P2)
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C...END OF LIGHT HIGGS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ 250 IF(IHIGGS.EQ.1) GOTO 490
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C... STARTING OF HEAVY HIGGS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ DO 270 I = 1,2
+ DO 260 J = 1,2
+ HCOUPT(I,J) =
+ & -SINT*XMZ**2*2D0*SQR/174.1D0/3D0*COSBPA*(DELTA(I,J) +
+ & (3D0 - 8D0*SINT)/4D0/SINT*T(1,I)*T(1,J))
+ & -RXMT**2/174.1D0**2*VP/SINB*SA*DELTA(I,J)
+ & -RXMT/VP/SINB*(AT*SA - XMU*CA)*(T(1,I)*T(2,J) +
+ & T(1,J)*T(2,I))
+ 260 CONTINUE
+ 270 CONTINUE
+
+ DO 290 I = 1,2
+ DO 280 J = 1,2
+ HCOUPB(I,J) =
+ & SINT*XMZ**2*2D0*SQR/174.1D0/6D0*COSBPA*(DELTA(I,J) +
+ & (3D0 - 4D0*SINT)/2D0/SINT*B(1,I)*B(1,J))
+ & -RMBOT**2/174.1D0**2*VP/COSB*CA*DELTA(I,J)
+ & -RMBOT/VP/COSB*(AB*CA - XMU*SA)*(B(1,I)*B(2,J) +
+ & B(1,J)*B(2,I))
+ HCOUPB(I,J)=0D0
+ 280 CONTINUE
+ 290 CONTINUE
+
+ PRUN = HM
+ EPS = 1D-4*PRUN
+ ITER = 0
+ 300 ITER = ITER + 1
+ DO 350 I3 = 1,3
+ PR(I3)=PRUN+(I3-2)*EPS/2
+ HP2=PR(I3)**2
+
+ HPOLT = 0D0
+ DO 320 I = 1,2
+ DO 310 J = 1,2
+ HPOLT = HPOLT + HCOUPT(I,J)**2*3D0*
+ & PYFINT(HP2,SSTOP2(I),SSTOP2(J))/16D0/PI**2
+ 310 CONTINUE
+ 320 CONTINUE
+
+ HPOLB = 0D0
+ DO 340 I = 1,2
+ DO 330 J = 1,2
+ HPOLB = HPOLB + HCOUPB(I,J)**2*3D0*
+ & PYFINT(HP2,SSBOT2(I),SSBOT2(J))/16D0/PI**2
+ 330 CONTINUE
+ 340 CONTINUE
+
+C RXMT2 = RXMT**2
+ XMT2 = XMT**2
+
+ HPOLTT =
+ & 3D0*RXMT**2/8D0/PI**2/ V **2*
+ & SA**2/SINB**2 *
+ & (-2D0*XMT**2+0.5D0*HP2)*
+ & PYFINT(HP2,XMT2,XMT2)
+
+ HPOL = HPOLT + HPOLB + HPOLTT
+ POLAR(I3) =HP2-HM**2-HPOL
+ 350 CONTINUE
+ DERIV = (POLAR(3)-POLAR(1))/EPS
+ DRUN = - POLAR(2)/DERIV
+ PRUN = PRUN + DRUN
+ HP2 = PRUN**2
+ IF( ABS(DRUN) .LT. 1D-4 .OR.ITER.GT.500) GOTO 360
+ GOTO 300
+ 360 CONTINUE
+
+
+ 370 CONTINUE
+ HMP = HP2**0.5D0
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C... END OF HEAVY HIGGS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ IF(IHIGGS.EQ.2) GOTO 490
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C...BEGINNING OF PSEUDOSCALAR HIGGS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ DO 390 I = 1,2
+ DO 380 J = 1,2
+ ACOUPT(I,J) =
+ & -RXMT/VP/SINB*(AT*COSB + XMU*SINB)*
+ & (T(1,I)*T(2,J) -T(1,J)*T(2,I))
+ 380 CONTINUE
+ 390 CONTINUE
+ DO 410 I = 1,2
+ DO 400 J = 1,2
+ ACOUPB(I,J) =
+ & RMBOT/VP/COSB*(AB*SINB + XMU*COSB)*
+ & (B(1,I)*B(2,J) -B(1,J)*B(2,I))
+ 400 CONTINUE
+ 410 CONTINUE
+
+ PRUN = XMA
+ EPS = 1D-4*PRUN
+ ITER = 0
+ 420 ITER = ITER + 1
+ DO 470 I3 = 1,3
+ PR(I3)=PRUN+(I3-2)*EPS/2
+ AP2=PR(I3)**2
+ APOLT = 0D0
+ DO 440 I = 1,2
+ DO 430 J = 1,2
+ APOLT = APOLT + ACOUPT(I,J)**2*3D0*
+ & PYFINT(AP2,SSTOP2(I),SSTOP2(J))/16D0/PI**2
+ 430 CONTINUE
+ 440 CONTINUE
+ APOLB = 0D0
+ DO 460 I = 1,2
+ DO 450 J = 1,2
+ APOLB = APOLB + ACOUPB(I,J)**2*3D0*
+ & PYFINT(AP2,SSBOT2(I),SSBOT2(J))/16D0/PI**2
+ 450 CONTINUE
+ 460 CONTINUE
+C RXMT2 = RXMT**2
+ XMT2=XMT**2
+ APOLTT =
+ & 3D0*RXMT**2/8D0/PI**2/ V **2*
+ & COSB**2/SINB**2 *
+ & (-0.5D0*AP2)*
+ & PYFINT(AP2,XMT2,XMT2)
+ APOL = APOLT + APOLB + APOLTT
+ POLAR(I3) = AP2 - XMA**2 -APOL
+ 470 CONTINUE
+ DERIV = (POLAR(3)-POLAR(1))/EPS
+ DRUN = - POLAR(2)/DERIV
+ PRUN = PRUN + DRUN
+ AP2 = PRUN**2
+ IF( ABS(DRUN) .LT. 1D-4 .OR.ITER.GT.500) GOTO 480
+ GOTO 420
+ 480 CONTINUE
+
+ AMP = DSQRT(AP2)
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C...END OF PSEUDOSCALAR HIGGS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ IF(IHIGGS.EQ.3) GOTO 490
+
+ 490 CONTINUE
+ RETURN
+ 500 CONTINUE
+ WRITE(MSTU(11),*) ' EXITING IN PYPOLE '
+ WRITE(MSTU(11),*) ' XMST11,XMST22 = ',XMST11,XMST22
+ WRITE(MSTU(11),*) ' XMSB11,XMSB22 = ',XMSB11,XMSB22
+ WRITE(MSTU(11),*) ' STOP22,SBOT22 = ',STOP22,SBOT22
+ CALL PYSTOP(107)
+ END
+
+C*********************************************************************
+
+C...PYRGHM
+C...Auxiliary to PYPOLE.
+
+ SUBROUTINE PYRGHM(MCHI,MA,TANB,MQ,MUR,MD,MTOP,AU,AD,MU,
+ * MHP,HMP,MCH,SA,CA,SAB,CAB,TANBA,MGLU,DELTAMT,DELTAMB)
+ IMPLICIT DOUBLE PRECISION(A-H,L,M,O-Z)
+ DIMENSION VH(2,2),M2(2,2),M2P(2,2)
+C...Parameters.
+ INTEGER MSTU,MSTJ
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+ MZ = 91.18D0
+ PI = PARU(1)
+ V = 174.1D0
+ ALPHA1 = 0.0101D0
+ ALPHA2 = 0.0337D0
+ ALPHA3Z = 0.12D0
+ TANBA = TANB
+ TANBT = TANB
+C MBOTTOM(MTOP) = 3. GEV
+ MB = PYMRUN(5,MTOP**2)
+ ALPHA3 = ALPHA3Z/(1D0 +(11D0 - 10D0/3D0)/4D0/PI*ALPHA3Z*
+ *LOG(MTOP**2/MZ**2))
+C RMTOP= RUNNING TOP QUARK MASS
+ RMTOP = MTOP/(1D0+4D0*ALPHA3/3D0/PI)
+ TQ = LOG((MQ**2+MTOP**2)/MTOP**2)
+ TU = LOG((MUR**2 + MTOP**2)/MTOP**2)
+ TD = LOG((MD**2 + MTOP**2)/MTOP**2)
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C
+C NEW DEFINITION, TGLU.
+C
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+ TGLU = LOG(MGLU**2/MTOP**2)
+ SINB = TANB/DSQRT(1D0 + TANB**2)
+ COSB = SINB/TANB
+ IF(MA.GT.MTOP)
+ *TANBA = TANB*(1D0-3D0/32D0/PI**2*
+ *(RMTOP**2/V**2/SINB**2-MB**2/V**2/COSB**2)*
+ *LOG(MA**2/MTOP**2))
+ IF(MA.LT.MTOP.OR.MA.EQ.MTOP) TANBT = TANBA
+ SINB = TANBT/SQRT(1D0 + TANBT**2)
+ COSB = 1D0/DSQRT(1D0 + TANBT**2)
+ G1 = SQRT(ALPHA1*4D0*PI)
+ G2 = SQRT(ALPHA2*4D0*PI)
+ G3 = SQRT(ALPHA3*4D0*PI)
+ HU = RMTOP/V/SINB
+ HD = MB/V/COSB
+ CALL PYGFXX(MA,TANBA,MQ,MUR,MD,MTOP,AU,AD,MU,MGLU,VH,STOP1,STOP2,
+ *SBOT1,SBOT2,DELTAMT,DELTAMB)
+ IF(MQ.GT.MUR) TP = TQ - TU
+ IF(MQ.LT.MUR.OR.MQ.EQ.MUR) TP = TU - TQ
+ IF(MQ.GT.MUR) TDP = TU
+ IF(MQ.LT.MUR.OR.MQ.EQ.MUR) TDP = TQ
+ IF(MQ.GT.MD) TPD = TQ - TD
+ IF(MQ.LT.MD.OR.MQ.EQ.MD) TPD = TD - TQ
+ IF(MQ.GT.MD) TDPD = TD
+ IF(MQ.LT.MD.OR.MQ.EQ.MD) TDPD = TQ
+
+ IF(MQ.GT.MD) DLAMBDA1 = 6D0/96D0/PI**2*G1**2*HD**2*TPD
+ IF(MQ.LT.MD.OR.MQ.EQ.MD) DLAMBDA1 = 3D0/32D0/PI**2*
+ * HD**2*(G1**2/3D0+G2**2)*TPD
+
+ IF(MQ.GT.MUR) DLAMBDA2 =12D0/96D0/PI**2*G1**2*HU**2*TP
+ IF(MQ.LT.MUR.OR.MQ.EQ.MUR) DLAMBDA2 = 3D0/32D0/PI**2*
+ * HU**2*(-G1**2/3D0+G2**2)*TP
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C
+C DLAMBDAP1 AND DLAMBDAP2 ARE THE NEW LOG CORRECTIONS DUE TO
+C THE PRESENCE OF THE GLUINO MASS. THEY ARE IN GENERAL VERY SMALL,
+C AND ONLY PRESENT IF THERE IS A HIERARCHY OF MASSES BETWEEN THE
+C TWO STOPS.
+C
+C
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ DLAMBDAP2 = 0D0
+ IF(MGLU.LT.MUR.OR.MGLU.LT.MQ) THEN
+ IF(MQ.GT.MUR.AND.MGLU.GT.MUR) THEN
+ DLAMBDAP2 = -4D0/(16D0*PI**2)**2*HU**4*(TQ**2-TGLU**2)
+ ENDIF
+
+ IF(MQ.GT.MUR.AND.MGLU.LT.MUR) THEN
+ DLAMBDAP2 = -4D0/(16D0*PI**2)**2*HU**4*(TQ**2-TU**2)
+ ENDIF
+
+ IF(MQ.GT.MUR.AND.MGLU.EQ.MUR) THEN
+ DLAMBDAP2 = -4D0/(16D0*PI**2)**2*HU**4*(TQ**2-TU**2)
+ ENDIF
+
+ IF(MUR.GT.MQ.AND.MGLU.GT.MQ) THEN
+ DLAMBDAP2 = -4D0/(16D0*PI**2)**2*HU**4*(TU**2-TGLU**2)
+ ENDIF
+
+ IF(MUR.GT.MQ.AND.MGLU.LT.MQ) THEN
+ DLAMBDAP2 = -4D0/(16D0*PI**2)**2*HU**4*(TU**2-TQ**2)
+ ENDIF
+
+ IF(MUR.GT.MQ.AND.MGLU.EQ.MQ) THEN
+ DLAMBDAP2 = -4D0/(16D0*PI**2)**2*HU**4*(TU**2-TQ**2)
+ ENDIF
+ ENDIF
+ DLAMBDA3 = 0D0
+ DLAMBDA4 = 0D0
+ IF(MQ.GT.MD) DLAMBDA3 = -1D0/32D0/PI**2*G1**2*HD**2*TPD
+ IF(MQ.LT.MD.OR.MQ.EQ.MD) DLAMBDA3 = 3D0/64D0/PI**2*HD**2*
+ *(G2**2-G1**2/3D0)*TPD
+ IF(MQ.GT.MUR) DLAMBDA3 = DLAMBDA3 -
+ *1D0/16D0/PI**2*G1**2*HU**2*TP
+ IF(MQ.LT.MUR.OR.MQ.EQ.MUR) DLAMBDA3 = DLAMBDA3 +
+ * 3D0/64D0/PI**2*HU**2*(G2**2+G1**2/3D0)*TP
+ IF(MQ.LT.MUR) DLAMBDA4 = -3D0/32D0/PI**2*G2**2*HU**2*TP
+ IF(MQ.LT.MD) DLAMBDA4 = DLAMBDA4 - 3D0/32D0/PI**2*G2**2*
+ *HD**2*TPD
+ LAMBDA1 = ((G1**2 + G2**2)/4D0)*
+ * (1D0-3D0*HD**2*(TPD + TDPD)/8D0/PI**2)
+ *+(3D0*HD**4D0/16D0/PI**2) *TPD*(1D0
+ *+ (3D0*HD**2/2D0 + HU**2/2D0
+ *- 8D0*G3**2) * (TPD + 2D0*TDPD)/16D0/PI**2)
+ *+(3D0*HD**4D0/8D0/PI**2) *TDPD*(1D0 + (3D0*HD**2/2D0 + HU**2/2D0
+ *- 8D0*G3**2) * TDPD/16D0/PI**2) + DLAMBDA1
+ LAMBDA2 = ((G1**2 + G2**2)/4D0)*(1D0-3D0*HU**2*
+ *(TP + TDP)/8D0/PI**2)
+ *+(3D0*HU**4D0/16D0/PI**2) *TP*(1D0
+ *+ (3D0*HU**2/2D0 + HD**2/2D0
+ *- 8D0*G3**2) * (TP + 2D0*TDP)/16D0/PI**2)
+ *+(3D0*HU**4D0/8D0/PI**2) *TDP*(1D0 + (3D0*HU**2/2D0 + HD**2/2D0
+ *- 8D0*G3**2) * TDP/16D0/PI**2) + DLAMBDA2 + DLAMBDAP2
+ LAMBDA3 = ((G2**2 - G1**2)/4D0)*(1D0-3D0*
+ *(HU**2)*(TP + TDP)/16D0/PI**2 -3D0*
+ *(HD**2)*(TPD + TDPD)/16D0/PI**2) +DLAMBDA3
+ LAMBDA4 = (- G2**2/2D0)*(1D0
+ *-3D0*(HU**2)*(TP + TDP)/16D0/PI**2
+ *-3D0*(HD**2)*(TPD + TDPD)/16D0/PI**2) +DLAMBDA4
+
+ LAMBDA5 = 0D0
+ LAMBDA6 = 0D0
+ LAMBDA7 = 0D0
+
+ M2(1,1) = 2D0*V**2*(LAMBDA1*COSB**2+2D0*LAMBDA6*
+ *COSB*SINB + LAMBDA5*SINB**2) + MA**2*SINB**2
+
+ M2(2,2) = 2D0*V**2*(LAMBDA5*COSB**2+2D0*LAMBDA7*
+ *COSB*SINB + LAMBDA2*SINB**2) + MA**2*COSB**2
+ M2(1,2) = 2D0*V**2*(LAMBDA6*COSB**2+(LAMBDA3+LAMBDA4)*
+ *COSB*SINB + LAMBDA7*SINB**2) - MA**2*SINB*COSB
+
+ M2(2,1) = M2(1,2)
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+CCC THIS IS THE CONTRIBUTION FROM LIGHT CHARGINOS/NEUTRALINOS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ MSSUSY=DSQRT(.5D0*(MQ**2+MUR**2)+MTOP**2)
+
+ IF(MCHI.GT.MSSUSY) GOTO 100
+ IF(MCHI.LT.MTOP) MCHI=MTOP
+
+ TCHAR=LOG(MSSUSY**2/MCHI**2)
+
+ DELTAL12=(9D0/64D0/PI**2*G2**4+5D0/192D0/PI**2*G1**4)*TCHAR
+ DELTAL3P4=(3D0/64D0/PI**2*G2**4+7D0/192D0/PI**2*G1**4
+ *+4D0/32D0/PI**2*G1**2*G2**2)*TCHAR
+
+ DELTAM112=2D0*DELTAL12*V**2*COSB**2
+ DELTAM222=2D0*DELTAL12*V**2*SINB**2
+ DELTAM122=2D0*DELTAL3P4*V**2*SINB*COSB
+
+ M2(1,1)=M2(1,1)+DELTAM112
+ M2(2,2)=M2(2,2)+DELTAM222
+ M2(1,2)=M2(1,2)+DELTAM122
+ M2(2,1)=M2(2,1)+DELTAM122
+
+ 100 CONTINUE
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+CCC END OF CHARGINOS/NEUTRALINOS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ DO 120 I = 1,2
+ DO 110 J = 1,2
+ M2P(I,J) = M2(I,J) + VH(I,J)
+ 110 CONTINUE
+ 120 CONTINUE
+ TRM2P = M2P(1,1) + M2P(2,2)
+ DETM2P = M2P(1,1)*M2P(2,2) - M2P(1,2)*M2P(2,1)
+ MH2P = (TRM2P - DSQRT(TRM2P**2 - 4D0* DETM2P))/2D0
+ HM2P = (TRM2P + DSQRT(TRM2P**2 - 4D0* DETM2P))/2D0
+ HMP = DSQRT(HM2P)
+ MCH2=MA**2+(LAMBDA5-LAMBDA4)*V**2
+ MCH=DSQRT(MCH2)
+ IF(MH2P.LT.0.) GOTO 130
+ MHP = SQRT(MH2P)
+ SIN2ALPHA = 2D0*M2P(1,2)/SQRT(TRM2P**2-4D0*DETM2P)
+ COS2ALPHA = (M2P(1,1)-M2P(2,2))/SQRT(TRM2P**2-4D0*DETM2P)
+ IF(COS2ALPHA.GE.0.) THEN
+ ALPHA = ASIN(SIN2ALPHA)/2D0
+ ELSE
+ ALPHA = -PI/2D0-ASIN(SIN2ALPHA)/2D0
+ ENDIF
+ SA = SIN(ALPHA)
+ CA = COS(ALPHA)
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C
+C HERE THE VALUES OF SAB AND CAB ARE DEFINED, IN ORDER
+C TO DEFINE THE NEW COUPLINGS OF THE LIGHTEST AND
+C HEAVY CP-EVEN HIGGS TO THE BOTTOM QUARK.
+C
+C
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+ SAB = SA*(1D0-DELTAMB/(1D0+DELTAMB)*(1D0+CA/SA/TANB))
+ CAB = CA*(1D0-DELTAMB/(1D0+DELTAMB)*(1D0-SA/CA/TANB))
+ 130 CONTINUE
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGFXX
+C...Auxiliary to PYRGHM.
+
+ SUBROUTINE PYGFXX(MA,TANB,MQ,MUR,MD,MTOP,AT,AB,XMU,XMGL,VH,
+ * STOP1,STOP2,SBOT1,SBOT2,DELTAMT,DELTAMB)
+ IMPLICIT DOUBLE PRECISION(A-H,M,O-Z)
+ DIMENSION VH(2,2),VH3T(2,2),VH3B(2,2),AL(2,2)
+C...Commonblocks.
+ INTEGER MSTU,MSTJ,KCHG
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+ G(X,Y) = 2.D0 - (X+Y)/(X-Y)*DLOG(X/Y)
+
+ T(X,Y,Z) = (X**2*Y**2*LOG(X**2/Y**2) + X**2*Z**2*LOG(Z**2/X**2)
+ * + Y**2*Z**2*LOG(Y**2/Z**2))/((X**2-Y**2)*(Y**2-Z**2)*(X**2-Z**2))
+
+ IF(DABS(XMU).LT.0.000001D0) XMU = 0.000001D0
+ MQ2 = MQ**2
+ MUR2 = MUR**2
+ MD2 = MD**2
+ TANBA = TANB
+ SINBA = TANBA/DSQRT(TANBA**2+1D0)
+ COSBA = SINBA/TANBA
+
+ SINB = TANB/DSQRT(TANB**2+1D0)
+ COSB = SINB/TANB
+
+ PI = PARU(1)
+ MZ = PMAS(23,1)
+ MW = PMAS(24,1)
+ SW = 1D0-MW**2/MZ**2
+ V = 174.1D0
+
+ ALPHA3 = 0.12D0/(1D0+23/12D0/PI*0.12D0*LOG(MTOP**2/MZ**2))
+ G2 = DSQRT(0.0336D0*4D0*PI)
+ G1 = DSQRT(0.0101D0*4D0*PI)
+
+ IF(MQ.GT.MUR) MST = MQ
+ IF(MUR.GT.MQ.OR.MUR.EQ.MQ) MST = MUR
+
+ MSUSYT = DSQRT(MST**2 + MTOP**2)
+
+ IF(MQ.GT.MD) MSB = MQ
+ IF(MD.GT.MQ.OR.MD.EQ.MQ) MSB = MD
+
+ MB = PYMRUN(5,MSB**2)
+ MSUSYB = DSQRT(MSB**2 + MB**2)
+ TT = LOG(MSUSYT**2/MTOP**2)
+ TB = LOG(MSUSYB**2/MTOP**2)
+
+ RMTOP = MTOP/(1D0+4D0*ALPHA3/3D0/PI)
+ HT = RMTOP/(V*SINB)
+ HTST = RMTOP/V
+ HB = MB/V/COSB
+ G32 = ALPHA3*4D0*PI
+ BT2 = -(8D0*G32 - 9D0*HT**2/2D0 - HB**2/2D0)/(4D0*PI)**2
+ BB2 = -(8D0*G32 - 9D0*HB**2/2D0 - HT**2/2D0)/(4D0*PI)**2
+ AL2 = 3D0/8D0/PI**2*HT**2
+C BT2ST = -(8.*G32 - 9.*HTST**2/2.)/(4.*PI)**2
+C ALST = 3./8./PI**2*HTST**2
+ AL1 = 3D0/8D0/PI**2*HB**2
+
+ AL(1,1) = AL1
+ AL(1,2) = (AL2+AL1)/2D0
+ AL(2,1) = (AL2+AL1)/2D0
+ AL(2,2) = AL2
+
+ IF(MA.GT.MTOP) THEN
+ VI = V*(1D0 + 3D0/32D0/PI**2*HTST**2*
+ * LOG(MTOP**2/MA**2))
+ H1I = VI* COSBA
+ H2I = VI*SINBA
+ H1T = H1I*(1D0+3D0/8D0/PI**2*HB**2*LOG(MA**2/MSUSYT**2))**.25D0
+ H2T = H2I*(1D0+3D0/8D0/PI**2*HT**2*LOG(MA**2/MSUSYT**2))**.25D0
+ H1B = H1I*(1D0+3D0/8D0/PI**2*HB**2*LOG(MA**2/MSUSYB**2))**.25D0
+ H2B = H2I*(1D0+3D0/8D0/PI**2*HT**2*LOG(MA**2/MSUSYB**2))**.25D0
+ ELSE
+ VI = V
+ H1I = VI*COSB
+ H2I = VI*SINB
+ H1T=H1I*(1D0+3D0/8D0/PI**2*HB**2*LOG(MTOP**2/MSUSYT**2))**.25D0
+ H2T=H2I*(1D0+3D0/8D0/PI**2*HT**2*LOG(MTOP**2/MSUSYT**2))**.25D0
+ H1B=H1I*(1D0+3D0/8D0/PI**2*HB**2*LOG(MTOP**2/MSUSYB**2))**.25D0
+ H2B=H2I*(1D0+3D0/8D0/PI**2*HT**2*LOG(MTOP**2/MSUSYB**2))**.25D0
+ ENDIF
+
+ TANBST = H2T/H1T
+ SINBT = TANBST/DSQRT(1D0+TANBST**2)
+
+ TANBSB = H2B/H1B
+ SINBB = TANBSB/DSQRT(1D0+TANBSB**2)
+ COSBB = SINBB/TANBSB
+
+ DELTAMT = 0D0
+ DELTAMB = 0D0
+
+ MTOP4 = RMTOP**4*(1D0+2D0*BT2*TT- AL2*TT - 4D0*DELTAMT)
+ MTOP2 = DSQRT(MTOP4)
+ MBOT4 = MB**4*(1D0+2D0*BB2*TB - AL1*TB)
+ * /(1D0+DELTAMB)**4
+ MBOT2 = DSQRT(MBOT4)
+
+ STOP12 = (MQ2 + MUR2)*.5D0 + MTOP2
+ * +1D0/8D0*(G2**2+G1**2)*(H1T**2-H2T**2)
+ * +SQRT(((G2**2-5D0*G1**2/3D0)/4D0*(H1T**2-H2T**2) +
+ * MQ2 - MUR2)**2*0.25D0 + MTOP2*(AT-XMU/TANBST)**2)
+ STOP22 = (MQ2 + MUR2)*.5D0 + MTOP2
+ * +1D0/8D0*(G2**2+G1**2)*(H1T**2-H2T**2)
+ * - SQRT(((G2**2-5D0*G1**2/3D0)/4D0*(H1T**2-H2T**2) +
+ * MQ2 - MUR2)**2*0.25D0
+ * + MTOP2*(AT-XMU/TANBST)**2)
+ IF(STOP22.LT.0.) GOTO 120
+ SBOT12 = (MQ2 + MD2)*.5D0
+ * - 1D0/8D0*(G2**2+G1**2)*(H1B**2-H2B**2)
+ * + SQRT(((G1**2/3D0-G2**2)/4D0*(H1B**2-H2B**2) +
+ * MQ2 - MD2)**2*0.25D0 + MBOT2*(AB-XMU*TANBSB)**2)
+ SBOT22 = (MQ2 + MD2)*.5D0
+ * - 1D0/8D0*(G2**2+G1**2)*(H1B**2-H2B**2)
+ * - SQRT(((G1**2/3D0-G2**2)/4D0*(H1B**2-H2B**2) +
+ * MQ2 - MD2)**2*0.25D0 + MBOT2*(AB-XMU*TANBSB)**2)
+ IF(SBOT22.LT.0.) SBOT22 = 10000D0
+
+ STOP1 = DSQRT(STOP12)
+ STOP2 = DSQRT(STOP22)
+ SBOT1 = DSQRT(SBOT12)
+ SBOT2 = DSQRT(SBOT22)
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C
+C HERE IS THE DEFINITION OF DELTAMB AND DELTAMT, WHICH
+C ARE THE VERTEX CORRECTIONS TO THE BOTTOM AND TOP QUARK
+C MASS, KEEPING THE DOMINANT QCD AND TOP YUKAWA COUPLING
+C INDUCED CORRECTIONS.
+C
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ X=SBOT1
+ Y=SBOT2
+ Z=XMGL
+ IF(X.EQ.Y) X = X - 0.00001D0
+ IF(X.EQ.Z) X = X - 0.00002D0
+ IF(Y.EQ.Z) Y = Y - 0.00003D0
+
+ T1=T(X,Y,Z)
+ X=STOP1
+ Y=STOP2
+ Z=XMU
+ IF(X.EQ.Y) X = X - 0.00001D0
+ IF(X.EQ.Z) X = X - 0.00002D0
+ IF(Y.EQ.Z) Y = Y - 0.00003D0
+ T2=T(X,Y,Z)
+ DELTAMB = -2*ALPHA3/3D0/PI*XMGL*(AB-XMU*TANB)*T1
+ * + HT**2/(4D0*PI)**2*(AT-XMU/TANB)*XMU*TANB*T2
+ X=STOP1
+ Y=STOP2
+ Z=XMGL
+ IF(X.EQ.Y) X = X - 0.00001D0
+ IF(X.EQ.Z) X = X - 0.00002D0
+ IF(Y.EQ.Z) Y = Y - 0.00003D0
+ T3=T(X,Y,Z)
+ DELTAMT = -2D0*ALPHA3/3D0/PI*(AT-XMU/TANB)*XMGL*T3
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+C
+C HERE THE NEW VALUES OF THE TOP AND BOTTOM QUARK MASSES AT
+C THE SCALE MS ARE DEFINED, TO BE USED IN THE EFFECTIVE
+C POTENTIAL APPROXIMATION. THEY ARE JUST THE OLD ONES, BUT
+C INCLUDING THE FINITE CORRECTIONS DELTAMT AND DELTAMB.
+C THE DELTAMB CORRECTIONS CAN BECOME LARGE AND ARE RESUMMED
+C TO ALL ORDERS, AS SUGGESTED IN THE TWO RECENT WORKS BY M. CARENA,
+C S. MRENNA AND C.E.M. WAGNER, AS WELL AS IN THE WORK BY M. CARENA,
+C D. GARCIA, U. NIERSTE AND C.E.M. WAGNER, TO APPEAR. THE TOP
+C QUARK MASS CORRECTIONS ARE SMALL AND ARE KEPT IN THE PERTURBATIVE
+C FORMULATION. THE FUNCTION T(X,Y,Z) IS NECESSARY FOR THE
+C CALCULATION. THE ENTRIES ARE MASSES AND NOT THEIR SQUARES !
+C
+C
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+
+ MTOP4 = RMTOP**4*(1D0+2D0*BT2*TT- AL2*TT - 4D0*DELTAMT)
+ MTOP2 = DSQRT(MTOP4)
+ MBOT4 = MB**4*(1D0+2D0*BB2*TB - AL1*TB)
+ * /(1D0+DELTAMB)**4
+ MBOT2 = DSQRT(MBOT4)
+
+ STOP12 = (MQ2 + MUR2)*.5D0 + MTOP2
+ * +1D0/8D0*(G2**2+G1**2)*(H1T**2-H2T**2)
+ * +SQRT(((G2**2-5D0*G1**2/3D0)/4D0*(H1T**2-H2T**2) +
+ * MQ2 - MUR2)**2*0.25D0 + MTOP2*(AT-XMU/TANBST)**2)
+ STOP22 = (MQ2 + MUR2)*.5D0 + MTOP2
+ * +1D0/8D0*(G2**2+G1**2)*(H1T**2-H2T**2)
+ * - SQRT(((G2**2-5D0*G1**2/3D0)/4D0*(H1T**2-H2T**2) +
+ * MQ2 - MUR2)**2*0.25D0
+ * + MTOP2*(AT-XMU/TANBST)**2)
+
+ IF(STOP22.LT.0.) GOTO 120
+ SBOT12 = (MQ2 + MD2)*.5D0
+ * - 1D0/8D0*(G2**2+G1**2)*(H1B**2-H2B**2)
+ * + SQRT(((G1**2/3D0-G2**2)/4D0*(H1B**2-H2B**2) +
+ * MQ2 - MD2)**2*0.25D0 + MBOT2*(AB-XMU*TANBSB)**2)
+ SBOT22 = (MQ2 + MD2)*.5D0
+ * - 1D0/8D0*(G2**2+G1**2)*(H1B**2-H2B**2)
+ * - SQRT(((G1**2/3D0-G2**2)/4D0*(H1B**2-H2B**2) +
+ * MQ2 - MD2)**2*0.25D0 + MBOT2*(AB-XMU*TANBSB)**2)
+ IF(SBOT22.LT.0.) GOTO 120
+
+
+ STOP1 = DSQRT(STOP12)
+ STOP2 = DSQRT(STOP22)
+ SBOT1 = DSQRT(SBOT12)
+ SBOT2 = DSQRT(SBOT22)
+
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+CCC D-TERMS
+CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
+ STW=SW
+
+ F1T=(MQ2-MUR2)/(STOP12-STOP22)*(.5D0-4D0/3D0*STW)*
+ * LOG(STOP1/STOP2)
+ * +(.5D0-2D0/3D0*STW)*LOG(STOP1*STOP2/(MQ2+MTOP2))
+ * + 2D0/3D0*STW*LOG(STOP1*STOP2/(MUR2+MTOP2))
+
+ F1B=(MQ2-MD2)/(SBOT12-SBOT22)*(-.5D0+2D0/3D0*STW)*
+ * LOG(SBOT1/SBOT2)
+ * +(-.5D0+1D0/3D0*STW)*LOG(SBOT1*SBOT2/(MQ2+MBOT2))
+ * - 1D0/3D0*STW*LOG(SBOT1*SBOT2/(MD2+MBOT2))
+
+ F2T=DSQRT(MTOP2)*(AT-XMU/TANBST)/(STOP12-STOP22)*
+ * (-.5D0*LOG(STOP12/STOP22)
+ * +(4D0/3D0*STW-.5D0)*(MQ2-MUR2)/(STOP12-STOP22)*
+ * G(STOP12,STOP22))
+
+ F2B=DSQRT(MBOT2)*(AB-XMU*TANBSB)/(SBOT12-SBOT22)*
+ * (.5D0*LOG(SBOT12/SBOT22)
+ * +(-2D0/3D0*STW+.5D0)*(MQ2-MD2)/(SBOT12-SBOT22)*
+ * G(SBOT12,SBOT22))
+
+ VH3B(1,1) = MBOT4/(COSBB**2)*(LOG(SBOT1**2*SBOT2**2/
+ * (MQ2+MBOT2)/(MD2+MBOT2))
+ * + 2D0*(AB*(AB-XMU*TANBSB)/(SBOT1**2-SBOT2**2))*
+ * LOG(SBOT1**2/SBOT2**2)) +
+ * MBOT4/(COSBB**2)*(AB*(AB-XMU*TANBSB)/
+ * (SBOT1**2-SBOT2**2))**2*G(SBOT12,SBOT22)
+
+ VH3T(1,1) =
+ * MTOP4/(SINBT**2)*(XMU*(-AT+XMU/TANBST)/(STOP1**2
+ * -STOP2**2))**2*G(STOP12,STOP22)
+
+ VH3B(1,1)=VH3B(1,1)+
+ * MZ**2*(2*MBOT2*F1B-DSQRT(MBOT2)*AB*F2B)
+
+ VH3T(1,1) = VH3T(1,1) +
+ * MZ**2*(DSQRT(MTOP2)*XMU/TANBST*F2T)
+
+ VH3T(2,2) = MTOP4/(SINBT**2)*(LOG(STOP1**2*STOP2**2/
+ * (MQ2+MTOP2)/(MUR2+MTOP2))
+ * + 2D0*(AT*(AT-XMU/TANBST)/(STOP1**2-STOP2**2))*
+ * LOG(STOP1**2/STOP2**2)) +
+ * MTOP4/(SINBT**2)*(AT*(AT-XMU/TANBST)/
+ * (STOP1**2-STOP2**2))**2*G(STOP12,STOP22)
+
+ VH3B(2,2) =
+ * MBOT4/(COSBB**2)*(XMU*(-AB+XMU*TANBSB)/(SBOT1**2
+ * -SBOT2**2))**2*G(SBOT12,SBOT22)
+
+ VH3T(2,2)=VH3T(2,2)+
+ * MZ**2*(-2*MTOP2*F1T+DSQRT(MTOP2)*AT*F2T)
+ VH3B(2,2) = VH3B(2,2) -MZ**2*DSQRT(MBOT2)*XMU*TANBSB*F2B
+ VH3T(1,2) = -
+ * MTOP4/(SINBT**2)*XMU*(AT-XMU/TANBST)/
+ * (STOP1**2-STOP2**2)*(LOG(STOP1**2/STOP2**2) + AT*
+ * (AT - XMU/TANBST)/(STOP1**2-STOP2**2)*G(STOP12,STOP22))
+
+ VH3B(1,2) =
+ * - MBOT4/(COSBB**2)*XMU*(AB-XMU*TANBSB)/
+ * (SBOT1**2-SBOT2**2)*(LOG(SBOT1**2/SBOT2**2) + AB*
+ * (AB - XMU*TANBSB)/(SBOT1**2-SBOT2**2)*G(SBOT12,SBOT22))
+
+
+ VH3T(1,2)=VH3T(1,2) +
+ *MZ**2*(MTOP2/TANBST*F1T-DSQRT(MTOP2)*(AT/TANBST+XMU)/2D0*F2T)
+
+ VH3B(1,2)=VH3B(1,2) +
+ *MZ**2*(-MBOT2*TANBSB*F1B+DSQRT(MBOT2)*(AB*TANBSB+XMU)/2D0*F2B)
+
+ VH3T(2,1) = VH3T(1,2)
+ VH3B(2,1) = VH3B(1,2)
+
+C TQ = LOG((MQ2 + MTOP2)/MTOP2)
+C TU = LOG((MUR2+MTOP2)/MTOP2)
+C TQD = LOG((MQ2 + MB**2)/MB**2)
+C TD = LOG((MD2+MB**2)/MB**2)
+
+ DO 110 I = 1,2
+ DO 100 J = 1,2
+ VH(I,J) =
+ * 6D0/(8D0*PI**2*(H1T**2+H2T**2))
+ * *VH3T(I,J)*0.5D0*(1D0-AL(I,J)*TT/2D0) +
+ * 6D0/(8D0*PI**2*(H1B**2+H2B**2))
+ * *VH3B(I,J)*0.5D0*(1D0-AL(I,J)*TB/2D0)
+ 100 CONTINUE
+ 110 CONTINUE
+
+ GOTO 150
+ 120 DO 140 I =1,2
+ DO 130 J = 1,2
+ VH(I,J) = -1D15
+ 130 CONTINUE
+ 140 CONTINUE
+
+
+ 150 RETURN
+ END
+
+
+
+
+
+C*********************************************************************
+
+C...PYFINT
+C...Auxiliary routine to PYPOLE for SUSY Higgs calculations.
+
+ FUNCTION PYFINT(A,B,C)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblock.
+ COMMON/PYINTS/XXM(20)
+ SAVE/PYINTS/
+
+C...Local variables.
+ EXTERNAL PYFISB
+ DOUBLE PRECISION PYFISB
+
+ XXM(1)=A
+ XXM(2)=B
+ XXM(3)=C
+ XLO=0D0
+ XHI=1D0
+ PYFINT = PYGAUS(PYFISB,XLO,XHI,1D-3)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYFISB
+C...Auxiliary routine to PYFINT for SUSY Higgs calculations.
+
+ FUNCTION PYFISB(X)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblock.
+ COMMON/PYINTS/XXM(20)
+ SAVE/PYINTS/
+
+ PYFISB = LOG(ABS(X*XXM(2)+(1-X)*XXM(3)-X*(1-X)*XXM(1))/
+ &(X*(XXM(2)-XXM(3))+XXM(3)))
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSFDC
+C...Calculates decays of sfermions.
+
+ SUBROUTINE PYSFDC(KFIN,XLAM,IDLAM,IKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/
+
+C...Local variables.
+ COMPLEX*16 ZMIXC(4,4),VMIXC(2,2),UMIXC(2,2)
+ COMPLEX*16 CAL,CAR,CBL,CBR,CALP,CARP,CBLP,CBRP,CA,CB
+ INTEGER KFIN,KCIN
+ DOUBLE PRECISION XMI,XMJ,XMF,XMSF1,XMSF2,XMW,XMW2,XMZ,AXMJ
+ DOUBLE PRECISION XMI2,XMI3,XMA2,XMB2,XMFP
+ DOUBLE PRECISION PYLAMF,XL
+ DOUBLE PRECISION TANW,XW,AEM,C1,AS
+ DOUBLE PRECISION AL,AR,BL,BR
+ DOUBLE PRECISION CH1,CH2,CH3,CH4
+ DOUBLE PRECISION XMBOT,XMTOP
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3)
+ INTEGER LKNT,IX,ILR,IDU,J,I,IKNT,IFL,II
+ DOUBLE PRECISION SR2
+ DOUBLE PRECISION CBETA,SBETA
+ DOUBLE PRECISION CW
+ DOUBLE PRECISION BETA,ALFA,XMU,AT,AB,ATRIT,ATRIB,ATRIL
+ DOUBLE PRECISION COSA,SINA,TANB
+ DOUBLE PRECISION PYALEM,PI,PYALPS,EI
+ DOUBLE PRECISION GHRR,GHLL,GHLR,XMB,BLR
+ INTEGER IG,KF1,KF2
+ INTEGER IGG(4),KFNCHI(4),KFCCHI(2)
+ DATA IGG/23,25,35,36/
+ DATA PI/3.141592654D0/
+ DATA SR2/1.4142136D0/
+ DATA KFNCHI/1000022,1000023,1000025,1000035/
+ DATA KFCCHI/1000024,1000037/
+
+C...COUNT THE NUMBER OF DECAY MODES
+ LKNT=0
+
+C...NO NU_R DECAYS
+ IF(KFIN.EQ.KSUSY2+12.OR.KFIN.EQ.KSUSY2+14.OR.
+ &KFIN.EQ.KSUSY2+16) RETURN
+
+ XMW=PMAS(24,1)
+ XMW2=XMW**2
+ XMZ=PMAS(23,1)
+ XW=PARU(102)
+ TANW = SQRT(XW/(1D0-XW))
+ CW=SQRT(1D0-XW)
+
+ DO 110 I=1,4
+ DO 100 J=1,4
+ ZMIXC(J,I)=DCMPLX(ZMIX(J,I),ZMIXI(J,I))
+ 100 CONTINUE
+ 110 CONTINUE
+ DO 130 I=1,2
+ DO 120 J=1,2
+ VMIXC(J,I)=DCMPLX(VMIX(J,I),VMIXI(J,I))
+ UMIXC(J,I)=DCMPLX(UMIX(J,I),UMIXI(J,I))
+ 120 CONTINUE
+ 130 CONTINUE
+
+C...KCIN
+ KCIN=PYCOMP(KFIN)
+C...ILR is 1 for left and 2 for right.
+ ILR=KFIN/KSUSY1
+C...IFL is matching non-SUSY flavour.
+ IFL=MOD(KFIN,KSUSY1)
+C...IDU is weak isospin, 1 for down and 2 for up.
+ IDU=2-MOD(IFL,2)
+
+ XMI=PMAS(KCIN,1)
+ XMI2=XMI**2
+ AEM=PYALEM(XMI2)
+ AS =PYALPS(XMI2)
+ C1=AEM/XW
+ XMI3=XMI**3
+ EI=KCHG(IFL,1)/3D0
+
+ XMBOT=PYMRUN(5,XMI2)
+ XMTOP=PYMRUN(6,XMI2)
+
+ TANB=RMSS(5)
+ BETA=ATAN(TANB)
+ ALFA=RMSS(18)
+ CBETA=COS(BETA)
+ SBETA=TANB*CBETA
+ SINA=SIN(ALFA)
+ COSA=COS(ALFA)
+ XMU=-RMSS(4)
+ ATRIT=RMSS(16)
+ ATRIB=RMSS(15)
+ ATRIL=RMSS(17)
+
+C...2-BODY DECAYS OF SFERMION -> GRAVITINO + FERMION
+
+ IF(IMSS(11).EQ.1) THEN
+ XMP=RMSS(29)
+ IDG=39+KSUSY1
+ XMGR=PMAS(PYCOMP(IDG),1)
+ XFAC=(XMI2/(XMP*XMGR))**2*XMI/48D0/PI
+ IF(IFL.EQ.5) THEN
+ XMF=XMBOT
+ ELSEIF(IFL.EQ.6) THEN
+ XMF=XMTOP
+ ELSE
+ XMF=PMAS(IFL,1)
+ ENDIF
+ IF(XMI.GT.XMGR+XMF) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=IFL
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*(1D0-XMF**2/XMI2)**4
+ ENDIF
+ ENDIF
+
+C...2-BODY DECAYS OF SFERMION -> FERMION + GAUGE/GAUGINO
+
+C...CHARGED DECAYS:
+ DO 140 IX=1,2
+C...DI -> U CHI1-,CHI2-
+ IF(IDU.EQ.1) THEN
+ XMFP=PMAS(IFL+1,1)
+ XMF =PMAS(IFL,1)
+C...UI -> D CHI1+,CHI2+
+ ELSE
+ XMFP=PMAS(IFL-1,1)
+ XMF =PMAS(IFL,1)
+ ENDIF
+ XMJ=SMW(IX)
+ AXMJ=ABS(XMJ)
+ IF(XMI.GE.AXMJ+XMFP) THEN
+ XMA2=XMJ**2
+ XMB2=XMFP**2
+ IF(IDU.EQ.2) THEN
+ IF(IFL.EQ.6) THEN
+ XMFP=XMBOT
+ XMF =XMTOP
+ ELSEIF(IFL.LT.6) THEN
+ XMF=0D0
+ XMFP=0D0
+ ENDIF
+ CBL=VMIXC(IX,1)
+ CAL=-XMFP*UMIXC(IX,2)/SR2/XMW/CBETA
+ CBR=-XMF*VMIXC(IX,2)/SR2/XMW/SBETA
+ CAR=0D0
+ ELSE
+ IF(IFL.EQ.5) THEN
+ XMF =XMBOT
+ XMFP=XMTOP
+ ELSEIF(IFL.LT.5) THEN
+ XMF=0D0
+ XMFP=0D0
+ ENDIF
+ CBL=UMIXC(IX,1)
+ CAL=-XMFP*VMIXC(IX,2)/SR2/XMW/SBETA
+ CBR=-XMF*UMIXC(IX,2)/SR2/XMW/CBETA
+ CAR=0D0
+ ENDIF
+
+ CALP=SFMIX(IFL,1)*CAL + SFMIX(IFL,2)*CAR
+ CBLP=SFMIX(IFL,1)*CBL + SFMIX(IFL,2)*CBR
+ CARP=SFMIX(IFL,4)*CAR + SFMIX(IFL,3)*CAL
+ CBRP=SFMIX(IFL,4)*CBR + SFMIX(IFL,3)*CBL
+ CAL=CALP
+ CBL=CBLP
+ CAR=CARP
+ CBR=CBRP
+
+C...F1 -> F` CHI
+ IF(ILR.EQ.1) THEN
+ CA=CAL
+ CB=CBL
+C...F2 -> F` CHI
+ ELSE
+ CA=CAR
+ CB=CBR
+ ENDIF
+ LKNT=LKNT+1
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+C...SPIN AVERAGE = 1/1 NOT 1/2....NO COLOR ENHANCEMENT
+ XLAM(LKNT)=2D0*C1/8D0/XMI3*SQRT(XL)*((XMI2-XMB2-XMA2)*
+ & (ABS(CA)**2+ABS(CB)**2)-4D0*DBLE(CA*DCONJG(CB))*XMJ*XMFP)
+ IDLAM(LKNT,3)=0
+ IF(IDU.EQ.1) THEN
+ IDLAM(LKNT,1)=-KFCCHI(IX)
+ IDLAM(LKNT,2)=IFL+1
+ ELSE
+ IDLAM(LKNT,1)=KFCCHI(IX)
+ IDLAM(LKNT,2)=IFL-1
+ ENDIF
+ ENDIF
+ 140 CONTINUE
+
+C...NEUTRAL DECAYS
+ DO 150 IX=1,4
+C...DI -> D CHI10
+ XMF=PMAS(IFL,1)
+ XMJ=SMZ(IX)
+ AXMJ=ABS(XMJ)
+ IF(XMI.GE.AXMJ+XMF) THEN
+ XMA2=XMJ**2
+ XMB2=XMF**2
+ IF(IDU.EQ.1) THEN
+ IF(IFL.EQ.5) THEN
+ XMF=XMBOT
+ ELSEIF(IFL.LT.5) THEN
+ XMF=0D0
+ ENDIF
+ CBL=-ZMIXC(IX,2)+TANW*ZMIXC(IX,1)*(2D0*EI+1)
+ CAL=XMF*ZMIXC(IX,3)/XMW/CBETA
+ CAR=-2D0*EI*TANW*ZMIXC(IX,1)
+ CBR=CAL
+ ELSE
+ IF(IFL.EQ.6) THEN
+ XMF=XMTOP
+ ELSEIF(IFL.LT.5) THEN
+ XMF=0D0
+ ENDIF
+ CBL=ZMIXC(IX,2)+TANW*ZMIXC(IX,1)*(2D0*EI-1)
+ CAL=XMF*ZMIXC(IX,4)/XMW/SBETA
+ CAR=-2D0*EI*TANW*ZMIXC(IX,1)
+ CBR=CAL
+ ENDIF
+
+ CALP=SFMIX(IFL,1)*CAL + SFMIX(IFL,2)*CAR
+ CBLP=SFMIX(IFL,1)*CBL + SFMIX(IFL,2)*CBR
+ CARP=SFMIX(IFL,4)*CAR + SFMIX(IFL,3)*CAL
+ CBRP=SFMIX(IFL,4)*CBR + SFMIX(IFL,3)*CBL
+ CAL=CALP
+ CBL=CBLP
+ CAR=CARP
+ CBR=CBRP
+
+C...F1 -> F CHI
+ IF(ILR.EQ.1) THEN
+ CA=CAL
+ CB=CBL
+C...F2 -> F CHI
+ ELSE
+ CA=CAR
+ CB=CBR
+ ENDIF
+ LKNT=LKNT+1
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+C...SPIN AVERAGE = 1/1 NOT 1/2....NO COLOR ENHANCEMENT
+ XLAM(LKNT)=C1/8D0/XMI3*SQRT(XL)*((XMI2-XMB2-XMA2)*
+ & (ABS(CA)**2+ABS(CB)**2)-4D0*DBLE(CA*DCONJG(CB))*XMJ*XMF)
+ IDLAM(LKNT,1)=KFNCHI(IX)
+ IDLAM(LKNT,2)=IFL
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 150 CONTINUE
+
+C...2-BODY DECAYS TO SM GAUGE AND HIGGS BOSONS
+C...IG=23,25,35,36
+ DO 160 II=1,4
+ IG=IGG(II)
+ IF(ILR.EQ.1) GOTO 160
+ XMB=PMAS(IG,1)
+ XMSF1=PMAS(PYCOMP(KFIN-KSUSY1),1)
+ IF(XMI.LT.XMSF1+XMB) GOTO 160
+ IF(IG.EQ.23) THEN
+ BL=-SIGN(.5D0,EI)/CW+EI*XW/CW
+ BR=EI*XW/CW
+ BLR=0D0
+ ELSEIF(IG.EQ.25) THEN
+ IF(IFL.EQ.5) THEN
+ XMF=XMBOT
+ ELSEIF(IFL.EQ.6) THEN
+ XMF=XMTOP
+ ELSEIF(IFL.LT.5) THEN
+ XMF=0D0
+ ELSE
+ XMF=PMAS(IFL,1)
+ ENDIF
+ IF(IDU.EQ.2) THEN
+ GHLL=XMZ/CW*(0.5D0-EI*XW)*(-SIN(ALFA+BETA))+
+ & XMF**2/XMW*COSA/SBETA
+ GHRR=XMZ/CW*(EI*XW)*(-SIN(ALFA+BETA))+
+ & XMF**2/XMW*COSA/SBETA
+ ELSE
+ GHLL=XMZ/CW*(0.5D0-EI*XW)*(-SIN(ALFA+BETA))+
+ & XMF**2/XMW*(-SINA)/CBETA
+ GHRR=XMZ/CW*(EI*XW)*(-SIN(ALFA+BETA))+
+ & XMF**2/XMW*(-SINA)/CBETA
+ ENDIF
+ IF(IFL.EQ.5) THEN
+ AT=ATRIB
+ ELSEIF(IFL.EQ.6) THEN
+ AT=ATRIT
+ ELSEIF(IFL.EQ.15) THEN
+ AT=ATRIL
+ ELSE
+ AT=0D0
+ ENDIF
+C.........need to complexify
+ IF(IDU.EQ.2) THEN
+ GHLR=XMF/2D0/XMW/SBETA*(-XMU*SINA+
+ & AT*COSA)
+ ELSE
+ GHLR=XMF/2D0/XMW/CBETA*(XMU*COSA-
+ & AT*SINA)
+ ENDIF
+ BL=GHLL
+ BR=GHRR
+ BLR=-GHLR
+ ELSEIF(IG.EQ.35) THEN
+ IF(IFL.EQ.5) THEN
+ XMF=XMBOT
+ ELSEIF(IFL.EQ.6) THEN
+ XMF=XMTOP
+ ELSEIF(IFL.LT.5) THEN
+ XMF=0D0
+ ELSE
+ XMF=PMAS(IFL,1)
+ ENDIF
+ IF(IDU.EQ.2) THEN
+ GHLL=XMZ/CW*(0.5D0-EI*XW)*COS(ALFA+BETA)+
+ & XMF**2/XMW*SINA/SBETA
+ GHRR=XMZ/CW*(EI*XW)*COS(ALFA+BETA)+
+ & XMF**2/XMW*SINA/SBETA
+ ELSE
+ GHLL=XMZ/CW*(0.5D0-EI*XW)*COS(ALFA+BETA)+
+ & XMF**2/XMW*COSA/CBETA
+ GHRR=XMZ/CW*(EI*XW)*COS(ALFA+BETA)+
+ & XMF**2/XMW*COSA/CBETA
+ ENDIF
+ IF(IFL.EQ.5) THEN
+ AT=ATRIB
+ ELSEIF(IFL.EQ.6) THEN
+ AT=ATRIT
+ ELSEIF(IFL.EQ.15) THEN
+ AT=ATRIL
+ ELSE
+ AT=0D0
+ ENDIF
+C.........Need to complexify
+ IF(IDU.EQ.2) THEN
+ GHLR=XMF/2D0/XMW/SBETA*(XMU*COSA+
+ & AT*SINA)
+ ELSE
+ GHLR=XMF/2D0/XMW/CBETA*(XMU*SINA+
+ & AT*COSA)
+ ENDIF
+ BL=GHLL
+ BR=GHRR
+ BLR=GHLR
+ ELSEIF(IG.EQ.36) THEN
+ GHLL=0D0
+ GHRR=0D0
+ IF(IFL.EQ.5) THEN
+ XMF=XMBOT
+ ELSEIF(IFL.EQ.6) THEN
+ XMF=XMTOP
+ ELSEIF(IFL.LT.5) THEN
+ XMF=0D0
+ ELSE
+ XMF=PMAS(IFL,1)
+ ENDIF
+ IF(IFL.EQ.5) THEN
+ AT=ATRIB
+ ELSEIF(IFL.EQ.6) THEN
+ AT=ATRIT
+ ELSEIF(IFL.EQ.15) THEN
+ AT=ATRIL
+ ELSE
+ AT=0D0
+ ENDIF
+C.........Need to complexify
+ IF(IDU.EQ.2) THEN
+ GHLR=XMF/2D0/XMW*(-XMU+AT/TANB)
+ ELSE
+ GHLR=XMF/2D0/XMW/(-XMU+AT*TANB)
+ ENDIF
+ BL=GHLL
+ BR=GHRR
+ BLR=GHLR
+ ENDIF
+ AL=SFMIX(IFL,1)*SFMIX(IFL,3)*BL+
+ & SFMIX(IFL,2)*SFMIX(IFL,4)*BR+
+ & (SFMIX(IFL,1)*SFMIX(IFL,4)+SFMIX(IFL,3)*SFMIX(IFL,2))*BLR
+ XL=PYLAMF(XMI2,XMSF1**2,XMB**2)
+ LKNT=LKNT+1
+ IF(IG.EQ.23) THEN
+ XLAM(LKNT)=C1/4D0/XMI3*XL**1.5D0/XMB**2*AL**2
+ ELSE
+ XLAM(LKNT)=C1/4D0/XMI3*SQRT(XL)*AL**2
+ ENDIF
+ IDLAM(LKNT,3)=0
+ IDLAM(LKNT,1)=KFIN-KSUSY1
+ IDLAM(LKNT,2)=IG
+ 160 CONTINUE
+
+C...SF -> SF' + W
+ XMB=PMAS(24,1)
+ IF(MOD(IFL,2).EQ.0) THEN
+ KF1=KSUSY1+IFL-1
+ ELSE
+ KF1=KSUSY1+IFL+1
+ ENDIF
+ KF2=KF1+KSUSY1
+ XMSF1=PMAS(PYCOMP(KF1),1)
+ XMSF2=PMAS(PYCOMP(KF2),1)
+ IF(XMI.GT.XMB+XMSF1) THEN
+ IF(MOD(IFL,2).EQ.0) THEN
+ IF(ILR.EQ.1) THEN
+ AL=1D0/SR2*SFMIX(IFL,1)*SFMIX(IFL-1,1)
+ ELSE
+ AL=1D0/SR2*SFMIX(IFL,3)*SFMIX(IFL-1,1)
+ ENDIF
+ ELSE
+ IF(ILR.EQ.1) THEN
+ AL=1D0/SR2*SFMIX(IFL,1)*SFMIX(IFL+1,1)
+ ELSE
+ AL=1D0/SR2*SFMIX(IFL,3)*SFMIX(IFL+1,1)
+ ENDIF
+ ENDIF
+ XL=PYLAMF(XMI2,XMSF1**2,XMB**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1/4D0/XMI3*XL**1.5D0/XMB**2*AL**2
+ IDLAM(LKNT,3)=0
+ IDLAM(LKNT,1)=KF1
+ IDLAM(LKNT,2)=SIGN(24,KCHG(IFL,1))
+ ENDIF
+ IF(XMI.GT.XMB+XMSF2) THEN
+ IF(MOD(IFL,2).EQ.0) THEN
+ IF(ILR.EQ.1) THEN
+ AL=1D0/SR2*SFMIX(IFL,1)*SFMIX(IFL-1,3)
+ ELSE
+ AL=1D0/SR2*SFMIX(IFL,3)*SFMIX(IFL-1,3)
+ ENDIF
+ ELSE
+ IF(ILR.EQ.1) THEN
+ AL=1D0/SR2*SFMIX(IFL,1)*SFMIX(IFL+1,3)
+ ELSE
+ AL=1D0/SR2*SFMIX(IFL,3)*SFMIX(IFL+1,3)
+ ENDIF
+ ENDIF
+ XL=PYLAMF(XMI2,XMSF2**2,XMB**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1/4D0/XMI3*XL**1.5D0/XMB**2*AL**2
+ IDLAM(LKNT,3)=0
+ IDLAM(LKNT,1)=KF2
+ IDLAM(LKNT,2)=SIGN(24,KCHG(IFL,1))
+ ENDIF
+
+C...SF -> SF' + HC
+ XMB=PMAS(37,1)
+ IF(MOD(IFL,2).EQ.0) THEN
+ KF1=KSUSY1+IFL-1
+ ELSE
+ KF1=KSUSY1+IFL+1
+ ENDIF
+ KF2=KF1+KSUSY1
+ XMSF1=PMAS(PYCOMP(KF1),1)
+ XMSF2=PMAS(PYCOMP(KF2),1)
+ IF(XMI.GT.XMB+XMSF1) THEN
+ XMF=0D0
+ XMFP=0D0
+ AT=0D0
+ AB=0D0
+ IF(MOD(IFL,2).EQ.0) THEN
+C...T1-> B1 HC
+ IF(ILR.EQ.1) THEN
+ CH1=-SFMIX(IFL,1)*SFMIX(IFL-1,1)
+ CH2= SFMIX(IFL,2)*SFMIX(IFL-1,2)
+ CH3=-SFMIX(IFL,1)*SFMIX(IFL-1,2)
+ CH4=-SFMIX(IFL,2)*SFMIX(IFL-1,1)
+C...T2-> B1 HC
+ ELSE
+ CH1= SFMIX(IFL,3)*SFMIX(IFL-1,1)
+ CH2=-SFMIX(IFL,4)*SFMIX(IFL-1,2)
+ CH3= SFMIX(IFL,3)*SFMIX(IFL-1,2)
+ CH4= SFMIX(IFL,4)*SFMIX(IFL-1,1)
+ ENDIF
+ IF(IFL.EQ.6) THEN
+ XMF=XMTOP
+ XMFP=XMBOT
+ AT=ATRIT
+ AB=ATRIB
+ ENDIF
+ ELSE
+C...B1 -> T1 HC
+ IF(ILR.EQ.1) THEN
+ CH1=-SFMIX(IFL+1,1)*SFMIX(IFL,1)
+ CH2= SFMIX(IFL+1,2)*SFMIX(IFL,2)
+ CH3=-SFMIX(IFL+1,1)*SFMIX(IFL,2)
+ CH4=-SFMIX(IFL+1,2)*SFMIX(IFL,1)
+C...B2-> T1 HC
+ ELSE
+ CH1= SFMIX(IFL,3)*SFMIX(IFL+1,1)
+ CH2=-SFMIX(IFL,4)*SFMIX(IFL+1,2)
+ CH3= SFMIX(IFL,4)*SFMIX(IFL+1,1)
+ CH4= SFMIX(IFL,3)*SFMIX(IFL+1,2)
+ ENDIF
+ IF(IFL.EQ.5) THEN
+ XMF=XMTOP
+ XMFP=XMBOT
+ AT=ATRIT
+ AB=ATRIB
+ ENDIF
+ ENDIF
+ XL=PYLAMF(XMI2,XMSF1**2,XMB**2)
+ LKNT=LKNT+1
+C.......Need to complexify
+ AL=CH1*(XMW2*2D0*CBETA*SBETA-XMFP**2*TANB-XMF**2/TANB)+
+ & CH2*2D0*XMF*XMFP/(2D0*CBETA*SBETA)+
+ & CH3*XMFP*(-XMU+AB*TANB)+CH4*XMF*(-XMU+AT/TANB)
+ XLAM(LKNT)=C1/8D0/XMI3*SQRT(XL)/XMW2*AL**2
+ IDLAM(LKNT,3)=0
+ IDLAM(LKNT,1)=KF1
+ IDLAM(LKNT,2)=SIGN(37,KCHG(IFL,1))
+ ENDIF
+ IF(XMI.GT.XMB+XMSF2) THEN
+ XMF=0D0
+ XMFP=0D0
+ AT=0D0
+ AB=0D0
+ IF(MOD(IFL,2).EQ.0) THEN
+C...T1-> B2 HC
+ IF(ILR.EQ.1) THEN
+ CH1= SFMIX(IFL-1,3)*SFMIX(IFL,1)
+ CH2=-SFMIX(IFL-1,4)*SFMIX(IFL,2)
+ CH3= SFMIX(IFL-1,4)*SFMIX(IFL,1)
+ CH4= SFMIX(IFL-1,3)*SFMIX(IFL,2)
+C...T2-> B2 HC
+ ELSE
+ CH1= -SFMIX(IFL,3)*SFMIX(IFL-1,3)
+ CH2= SFMIX(IFL,4)*SFMIX(IFL-1,4)
+ CH3= -SFMIX(IFL,3)*SFMIX(IFL-1,4)
+ CH4= -SFMIX(IFL,4)*SFMIX(IFL-1,3)
+ ENDIF
+ IF(IFL.EQ.6) THEN
+ XMF=XMTOP
+ XMFP=XMBOT
+ AT=ATRIT
+ AB=ATRIB
+ ENDIF
+ ELSE
+C...B1 -> T2 HC
+ IF(ILR.EQ.1) THEN
+ CH1= SFMIX(IFL+1,3)*SFMIX(IFL,1)
+ CH2=-SFMIX(IFL+1,4)*SFMIX(IFL,2)
+ CH3= SFMIX(IFL+1,3)*SFMIX(IFL,2)
+ CH4= SFMIX(IFL+1,4)*SFMIX(IFL,1)
+C...B2-> T2 HC
+ ELSE
+ CH1= -SFMIX(IFL+1,3)*SFMIX(IFL,3)
+ CH2= SFMIX(IFL+1,4)*SFMIX(IFL,4)
+ CH3= -SFMIX(IFL+1,3)*SFMIX(IFL,4)
+ CH4= -SFMIX(IFL+1,4)*SFMIX(IFL,3)
+ ENDIF
+ IF(IFL.EQ.5) THEN
+ XMF=XMTOP
+ XMFP=XMBOT
+ AT=ATRIT
+ AB=ATRIB
+ ENDIF
+ ENDIF
+ XL=PYLAMF(XMI2,XMSF1**2,XMB**2)
+ LKNT=LKNT+1
+C.......Need to complexify
+ AL=CH1*(XMW2*2D0*CBETA*SBETA-XMFP**2*TANB-XMF**2/TANB)+
+ & CH2*2D0*XMF*XMFP/(2D0*CBETA*SBETA)+
+ & CH3*XMFP*(-XMU+AB*TANB)+CH4*XMF*(-XMU+AT/TANB)
+ XLAM(LKNT)=C1/8D0/XMI3*SQRT(XL)/XMW2*AL**2
+ IDLAM(LKNT,3)=0
+ IDLAM(LKNT,1)=KF2
+ IDLAM(LKNT,2)=SIGN(37,KCHG(IFL,1))
+ ENDIF
+
+C...2-BODY DECAYS OF SQUARK -> QUARK GLUINO
+
+ IF(IFL.LE.6) THEN
+ XMFP=0D0
+ XMF=0D0
+ IF(IFL.EQ.6) XMF=PMAS(6,1)
+ IF(IFL.EQ.5) XMF=PMAS(5,1)
+ XMJ=PMAS(PYCOMP(KSUSY1+21),1)
+ AXMJ=ABS(XMJ)
+ IF(XMI.GE.AXMJ+XMF) THEN
+ AL=-SFMIX(IFL,3)
+ BL=SFMIX(IFL,1)
+ AR=-SFMIX(IFL,4)
+ BR=SFMIX(IFL,2)
+C...F1 -> F CHI
+ IF(ILR.EQ.1) THEN
+ XCA=AL
+ XCB=BL
+C...F2 -> F CHI
+ ELSE
+ XCA=AR
+ XCB=BR
+ ENDIF
+ LKNT=LKNT+1
+ XMA2=XMJ**2
+ XMB2=XMF**2
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+ XLAM(LKNT)=4D0/3D0*AS/2D0/XMI3*SQRT(XL)*((XMI2-XMB2-XMA2)*
+ & (XCA**2+XCB**2)+4D0*XCA*XCB*XMJ*XMF)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=IFL
+ IDLAM(LKNT,3)=0
+ ENDIF
+ ENDIF
+
+C...IF NOTHING ELSE FOR T1, THEN T1* -> C+CHI0
+ IF(KFIN.EQ.KSUSY1+6.AND.PMAS(KCIN,1).GT.
+ &PMAS(PYCOMP(KSUSY1+22),1)+PMAS(4,1)) THEN
+C...THIS IS A BACK-OF-THE-ENVELOPE ESTIMATE
+C...M = 1/(16PI**2)G**3 = G*2/(4PI) G/(4PI) = C1 * G/(4PI)
+C...M*M = C1**2 * G**2/(16PI**2)
+C...G = 1/(8PI)P/MI**2 * M*M = C1**3/(32PI**2)*LAM/(2*MI**3)
+ LKNT=LKNT+1
+ XL=PYLAMF(XMI2,0D0,PMAS(PYCOMP(KSUSY1+22),1)**2)
+ XLAM(LKNT)=C1**3/64D0/PI**2/XMI3*SQRT(XL)
+ IF(XLAM(LKNT).EQ.0) XLAM(LKNT)=1D-3
+ IDLAM(LKNT,1)=KSUSY1+22
+ IDLAM(LKNT,2)=4
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+C...R-violating sfermion decays (SKANDS).
+ CALL PYRVSF(KFIN,XLAM,IDLAM,LKNT)
+
+ IKNT=LKNT
+ XLAM(0)=0D0
+ DO 170 I=1,IKNT
+ IF(XLAM(I).LT.0D0) XLAM(I)=0D0
+ XLAM(0)=XLAM(0)+XLAM(I)
+ 170 CONTINUE
+ IF(XLAM(0).EQ.0D0) XLAM(0)=1D-3
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGLUI
+C...Calculates gluino decay modes.
+
+ SUBROUTINE PYGLUI(KFIN,XLAM,IDLAM,IKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+CC &SFMIX(16,4),
+C COMMON/PYINTS/XXM(20)
+ COMPLEX*16 CXC
+ COMMON/PYINTC/XXC(10),CXC(8)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/,/PYINTC/
+
+C...Local variables
+ COMPLEX*16 ZMIXC(4,4),VMIXC(2,2),UMIXC(2,2),OLPP,ORPP,GLIJ,GRIJ
+ DOUBLE PRECISION XMI,XMJ,XMF,AXMJ,AXMI
+ DOUBLE PRECISION XMI2,XMI3,XMA2,XMB2,XMFP
+ DOUBLE PRECISION PYLAMF,XL
+ DOUBLE PRECISION TANW,XW,AEM,C1,AS,S12MAX,S12MIN
+ DOUBLE PRECISION CA,CB,AL,AR,BL,BR
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3)
+ INTEGER LKNT,IX,ILR,I,IKNT,IFL
+ DOUBLE PRECISION SR2
+ DOUBLE PRECISION GAM
+ DOUBLE PRECISION PYALEM,PI,PYALPS,EI,T3I
+ EXTERNAL PYGAUS,PYXXZ6
+ DOUBLE PRECISION PYGAUS,PYXXZ6
+ DOUBLE PRECISION PREC
+ INTEGER KFNCHI(4),KFCCHI(2)
+ DATA PI/3.141592654D0/
+ DATA SR2/1.4142136D0/
+ DATA PREC/1D-2/
+ DATA KFNCHI/1000022,1000023,1000025,1000035/
+ DATA KFCCHI/1000024,1000037/
+
+C...COUNT THE NUMBER OF DECAY MODES
+ LKNT=0
+ IF(KFIN.NE.KSUSY1+21) RETURN
+ KCIN=PYCOMP(KFIN)
+
+ XW=PARU(102)
+ TANW = SQRT(XW/(1D0-XW))
+
+ XMI=PMAS(KCIN,1)
+ AXMI=ABS(XMI)
+ XMI2=XMI**2
+ AEM=PYALEM(XMI2)
+ AS =PYALPS(XMI2)
+ C1=AEM/XW
+ XMI3=AXMI**3
+
+ XMI=SIGN(XMI,RMSS(3))
+
+C...2-BODY DECAYS OF GLUINO -> GRAVITINO GLUON
+
+ IF(IMSS(11).EQ.1) THEN
+ XMP=RMSS(29)
+ IDG=39+KSUSY1
+ XMGR=PMAS(PYCOMP(IDG),1)
+ XFAC=(XMI2/(XMP*XMGR))**2*AXMI/48D0/PI
+ IF(AXMI.GT.XMGR) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=21
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC
+ ENDIF
+ ENDIF
+
+C...2-BODY DECAYS OF GLUINO -> QUARK SQUARK
+
+ DO 110 IFL=1,6
+ DO 100 ILR=1,2
+ XMJ=PMAS(PYCOMP(ILR*KSUSY1+IFL),1)
+ AXMJ=ABS(XMJ)
+ XMF=PMAS(IFL,1)
+ IF(AXMI.GE.AXMJ+XMF) THEN
+C...Minus sign difference from gluino-quark-squark feynman rules
+ AL=SFMIX(IFL,1)
+ BL=-SFMIX(IFL,3)
+ AR=SFMIX(IFL,2)
+ BR=-SFMIX(IFL,4)
+C...F1 -> F CHI
+ IF(ILR.EQ.1) THEN
+ CA=AL
+ CB=BL
+C...F2 -> F CHI
+ ELSE
+ CA=AR
+ CB=BR
+ ENDIF
+ LKNT=LKNT+1
+ XMA2=XMJ**2
+ XMB2=XMF**2
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+ XLAM(LKNT)=4D0/8D0*AS/4D0/XMI3*SQRT(XL)*((XMI2+XMB2-XMA2)*
+ & (CA**2+CB**2)-4D0*CA*CB*XMI*XMF)
+ IDLAM(LKNT,1)=ILR*KSUSY1+IFL
+ IDLAM(LKNT,2)=-IFL
+ IDLAM(LKNT,3)=0
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...3-BODY DECAYS TO GAUGINO FERMION-FERMION
+C...GLUINO -> NI Q QBAR
+ DO 170 IX=1,4
+ XMJ=SMZ(IX)
+ AXMJ=ABS(XMJ)
+ IF(AXMI.GE.AXMJ) THEN
+ DO 120 I=1,4
+ ZMIXC(IX,I)=DCMPLX(ZMIX(IX,I),ZMIXI(IX,I))
+ 120 CONTINUE
+ OLPP=DCMPLX(COS(RMSS(32)),SIN(RMSS(32)))/SR2
+ ORPP=DCONJG(OLPP)
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ IA=1
+ XXC(5)=PMAS(PYCOMP(KSUSY1+IA),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+IA),1)
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ XXC(9)=1D6
+ XXC(10)=0D0
+ EI=KCHG(IA,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*OLPP
+ GRIJ=ZMIXC(IX,1)*(EI*TANW)*ORPP
+ CXC(1)=0D0
+ CXC(2)=-GLIJ
+ CXC(3)=0D0
+ CXC(4)=DCONJG(GLIJ)
+ CXC(5)=0D0
+ CXC(6)=GRIJ
+ CXC(7)=0D0
+ CXC(8)=-DCONJG(GRIJ)
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 130
+ IF(AXMI.GE.AXMJ+2D0*PMAS(1,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1*AS/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-2)
+ IDLAM(LKNT,1)=KFNCHI(IX)
+ IDLAM(LKNT,2)=1
+ IDLAM(LKNT,3)=-1
+ ENDIF
+ IF(AXMI.GE.AXMJ+2D0*PMAS(3,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IX)
+ IDLAM(LKNT,2)=3
+ IDLAM(LKNT,3)=-3
+ ENDIF
+ 130 CONTINUE
+ IF(AXMI.GE.AXMJ+2D0*PMAS(5,1)) THEN
+ PMOLD=PMAS(PYCOMP(KSUSY1+5),1)
+ IF(AXMI.GT.PMAS(PYCOMP(KSUSY2+5),1)+PMAS(5,1)) THEN
+ GOTO 140
+ ELSEIF(AXMI.GT.PMAS(PYCOMP(KSUSY1+5),1)+PMAS(5,1)) THEN
+ PMAS(PYCOMP(KSUSY1+5),1)=100D0*XMI
+ ENDIF
+ CALL PYTBBN(IX,100,-1D0/3D0,XMI,GAM)
+ LKNT=LKNT+1
+ XLAM(LKNT)=GAM
+ IDLAM(LKNT,1)=KFNCHI(IX)
+ IDLAM(LKNT,2)=5
+ IDLAM(LKNT,3)=-5
+ PMAS(PYCOMP(KSUSY1+5),1)=PMOLD
+ ENDIF
+C...U-TYPE QUARKS
+ 140 CONTINUE
+ IA=2
+ XXC(5)=PMAS(PYCOMP(KSUSY1+IA),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+IA),1)
+C IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 290
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ EI=KCHG(IA,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*OLPP
+ GRIJ=ZMIXC(IX,1)*(EI*TANW)*ORPP
+ CXC(2)=-GLIJ
+ CXC(4)=DCONJG(GLIJ)
+ CXC(6)=GRIJ
+ CXC(8)=-DCONJG(GRIJ)
+ IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 150
+ IF(AXMI.GE.AXMJ+2D0*PMAS(2,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1*AS/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-2)
+ IDLAM(LKNT,1)=KFNCHI(IX)
+ IDLAM(LKNT,2)=2
+ IDLAM(LKNT,3)=-2
+ ENDIF
+ IF(AXMI.GE.AXMJ+2D0*PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IX)
+ IDLAM(LKNT,2)=4
+ IDLAM(LKNT,3)=-4
+ ENDIF
+ 150 CONTINUE
+C...INCLUDE THE DECAY GLUINO -> NJ + T + T~
+C...IF THE DECAY GLUINO -> ST + T CANNOT OCCUR
+ XMF=PMAS(6,1)
+ IF(AXMI.GE.AXMJ+2D0*XMF) THEN
+ PMOLD=PMAS(PYCOMP(KSUSY1+6),1)
+ IF(AXMI.GT.PMAS(PYCOMP(KSUSY2+6),1)+XMF) THEN
+ GOTO 160
+ ELSEIF(AXMI.GT.PMAS(PYCOMP(KSUSY1+6),1)+XMF) THEN
+ PMAS(PYCOMP(KSUSY1+6),1)=100D0*XMI
+ ENDIF
+ CALL PYTBBN(IX,100,2D0/3D0,XMI,GAM)
+ LKNT=LKNT+1
+ XLAM(LKNT)=GAM
+ IDLAM(LKNT,1)=KFNCHI(IX)
+ IDLAM(LKNT,2)=6
+ IDLAM(LKNT,3)=-6
+ PMAS(PYCOMP(KSUSY1+6),1)=PMOLD
+ ENDIF
+ 160 CONTINUE
+ ENDIF
+ 170 CONTINUE
+
+C...GLUINO -> CI Q QBAR'
+ DO 210 IX=1,2
+ XMJ=SMW(IX)
+ AXMJ=ABS(XMJ)
+ IF(AXMI.GE.AXMJ) THEN
+ DO 180 I=1,2
+ VMIXC(IX,I)=DCMPLX(VMIX(IX,I),VMIXI(IX,I))
+ UMIXC(IX,I)=DCMPLX(UMIX(IX,I),UMIXI(IX,I))
+ 180 CONTINUE
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ XXC(5)=PMAS(PYCOMP(KSUSY1+1),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+2),1)
+ XXC(9)=1D6
+ XXC(10)=0D0
+ OLPP=DCMPLX(COS(RMSS(32)),SIN(RMSS(32)))
+ ORPP=DCONJG(OLPP)
+ CXC(1)=DCMPLX(0D0,0D0)
+ CXC(3)=DCMPLX(0D0,0D0)
+ CXC(5)=DCMPLX(0D0,0D0)
+ CXC(7)=DCMPLX(0D0,0D0)
+ CXC(2)=UMIXC(IX,1)*OLPP/SR2
+ CXC(4)=-DCONJG(VMIXC(IX,1))*ORPP/SR2
+ CXC(6)=DCMPLX(0D0,0D0)
+ CXC(8)=DCMPLX(0D0,0D0)
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ELSEIF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+ IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 190
+ IF(AXMI.GE.AXMJ+PMAS(1,1)+PMAS(2,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=0.5D0*C1*AS/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(IX)
+ IDLAM(LKNT,2)=1
+ IDLAM(LKNT,3)=-2
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ ENDIF
+ IF(AXMI.GE.AXMJ+PMAS(3,1)+PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(IX)
+ IDLAM(LKNT,2)=3
+ IDLAM(LKNT,3)=-4
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ ENDIF
+ 190 CONTINUE
+
+ XMF=PMAS(6,1)
+ XMFP=PMAS(5,1)
+ IF(AXMI.GE.AXMJ+XMF+XMFP) THEN
+ IF(XMI.GT.MIN(PMAS(PYCOMP(KSUSY1+5),1)+XMFP,
+ $ PMAS(PYCOMP(KSUSY2+6),1)+XMF)) GOTO 200
+ PMOLT2=PMAS(PYCOMP(KSUSY2+6),1)
+ PMOLB2=PMAS(PYCOMP(KSUSY2+5),1)
+ PMOLT1=PMAS(PYCOMP(KSUSY1+6),1)
+ PMOLB1=PMAS(PYCOMP(KSUSY1+5),1)
+ IF(XMI.GT.PMOLT2+XMF) PMAS(PYCOMP(KSUSY2+6),1)=100D0*AXMI
+ IF(XMI.GT.PMOLT1+XMF) PMAS(PYCOMP(KSUSY1+6),1)=100D0*AXMI
+ IF(XMI.GT.PMOLB2+XMFP) PMAS(PYCOMP(KSUSY2+5),1)=100D0*AXMI
+ IF(XMI.GT.PMOLB1+XMFP) PMAS(PYCOMP(KSUSY1+5),1)=100D0*AXMI
+ CALL PYTBBC(IX,100,XMI,GAM)
+ LKNT=LKNT+1
+ XLAM(LKNT)=GAM
+ IDLAM(LKNT,1)=KFCCHI(IX)
+ IDLAM(LKNT,2)=5
+ IDLAM(LKNT,3)=-6
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ PMAS(PYCOMP(KSUSY2+6),1)=PMOLT2
+ PMAS(PYCOMP(KSUSY2+5),1)=PMOLB2
+ PMAS(PYCOMP(KSUSY1+6),1)=PMOLT1
+ PMAS(PYCOMP(KSUSY1+5),1)=PMOLB1
+ ENDIF
+ 200 CONTINUE
+ ENDIF
+ 210 CONTINUE
+
+C...R-parity violating (3-body) decays.
+ CALL PYRVGL(KFIN,XLAM,IDLAM,LKNT)
+
+ IKNT=LKNT
+ XLAM(0)=0D0
+ DO 220 I=1,IKNT
+ IF(XLAM(I).LT.0D0) XLAM(I)=0D0
+ XLAM(0)=XLAM(0)+XLAM(I)
+ 220 CONTINUE
+ IF(XLAM(0).EQ.0D0) XLAM(0)=1D-6
+
+ RETURN
+ END
+
+
+C*********************************************************************
+
+C...PYTBBN
+C...Calculates the three-body decay of gluinos into
+C...neutralinos and third generation fermions.
+
+ SUBROUTINE PYTBBN(I,NN,E,XMGLU,GAM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/
+
+C...Local variables.
+ EXTERNAL PYSIMP,PYLAMF
+ DOUBLE PRECISION PYSIMP,PYLAMF
+ INTEGER LIN,NN
+ DOUBLE PRECISION COSD,SIND,COSD2,SIND2,COS2D,SIN2D
+ DOUBLE PRECISION HL,HR,FL,FR,HL2,HR2,FL2,FR2
+ DOUBLE PRECISION XMS2(2),XM,XM2,XMG,XMG2,XMR,XMR2
+ DOUBLE PRECISION SBAR,SMIN,SMAX,XMQA,W,GRS,G(0:6),SUMME(0:100)
+ DOUBLE PRECISION FF,HH,HFL,HFR,HRFL,HLFR,XMQ4,XM24
+ DOUBLE PRECISION XLN1,XLN2,B1,B2
+ DOUBLE PRECISION E,XMGLU,GAM
+ DOUBLE PRECISION HRB(4),HLB(4),FLB(4),FRB(4)
+ SAVE HRB,HLB,FLB,FRB
+ DOUBLE PRECISION ALPHAW,ALPHAS
+ DOUBLE PRECISION HLT(4),HRT(4),FLT(4),FRT(4)
+ SAVE HLT,HRT,FLT,FRT
+ DOUBLE PRECISION AMN(4),AN(4,4),ZN(3)
+ SAVE AMN,AN,ZN
+ DOUBLE PRECISION AMBOT,SINC,COSC
+ DOUBLE PRECISION AMTOP,SINA,COSA
+ DOUBLE PRECISION SINW,COSW,TANW
+ DOUBLE PRECISION ROT1(4,4)
+ LOGICAL IFIRST
+ SAVE IFIRST
+ DATA IFIRST/.TRUE./
+
+ TANB=RMSS(5)
+ SINB=TANB/SQRT(1D0+TANB**2)
+ COSB=SINB/TANB
+ XW=PARU(102)
+ SINW=SQRT(XW)
+ COSW=SQRT(1D0-XW)
+ TANW=SINW/COSW
+ AMW=PMAS(24,1)
+ COSC=SFMIX(5,1)
+ SINC=SFMIX(5,3)
+ COSA=SFMIX(6,1)
+ SINA=SFMIX(6,3)
+ AMBOT=PYMRUN(5,XMGLU**2)
+ AMTOP=PYMRUN(6,XMGLU**2)
+ W2=SQRT(2D0)
+ FAKT1=AMBOT/W2/AMW/COSB
+ FAKT2=AMTOP/W2/AMW/SINB
+ IF(IFIRST) THEN
+ DO 110 II=1,4
+ AMN(II)=SMZ(II)
+ DO 100 J=1,4
+ ROT1(II,J)=0D0
+ AN(II,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+ ROT1(1,1)=COSW
+ ROT1(1,2)=-SINW
+ ROT1(2,1)=-ROT1(1,2)
+ ROT1(2,2)=ROT1(1,1)
+ ROT1(3,3)=COSB
+ ROT1(3,4)=SINB
+ ROT1(4,3)=-ROT1(3,4)
+ ROT1(4,4)=ROT1(3,3)
+ DO 140 II=1,4
+ DO 130 J=1,4
+ DO 120 JJ=1,4
+ AN(II,J)=AN(II,J)+ZMIX(II,JJ)*ROT1(JJ,J)
+ 120 CONTINUE
+ 130 CONTINUE
+ 140 CONTINUE
+ DO 150 J=1,4
+ ZN(1)=-FAKT2*(-SINB*AN(J,3)+COSB*AN(J,4))
+ ZN(2)=-2D0*W2/3D0*SINW*(TANW*AN(J,2)-AN(J,1))
+ ZN(3)=-2*W2/3D0*SINW*AN(J,1)-W2*(0.5D0-2D0/3D0*
+ & XW)*AN(J,2)/COSW
+ HRT(J)=ZN(1)*COSA-ZN(3)*SINA
+ HLT(J)=ZN(1)*COSA+ZN(2)*SINA
+ FLT(J)=ZN(3)*COSA+ZN(1)*SINA
+ FRT(J)=ZN(2)*COSA-ZN(1)*SINA
+C FLU(J)=ZN(3)
+C FRU(J)=ZN(2)
+ ZN(1)=-FAKT1*(COSB*AN(J,3)+SINB*AN(J,4))
+ ZN(2)=W2/3D0*SINW*(TANW*AN(J,2)-AN(J,1))
+ ZN(3)=W2/3D0*SINW*AN(J,1)+W2*(0.5D0-XW/3D0)*AN(J,2)/COSW
+ HRB(J)=ZN(1)*COSC-ZN(3)*SINC
+ HLB(J)=ZN(1)*COSC+ZN(2)*SINC
+ FLB(J)=ZN(3)*COSC+ZN(1)*SINC
+ FRB(J)=ZN(2)*COSC-ZN(1)*SINC
+C FLD(J)=ZN(3)
+C FRD(J)=ZN(2)
+ 150 CONTINUE
+C AMST(1)=PMAS(PYCOMP(KSUSY1+6),1)
+C AMST(2)=PMAS(PYCOMP(KSUSY2+6),1)
+C AMSB(1)=PMAS(PYCOMP(KSUSY1+5),1)
+C AMSB(2)=PMAS(PYCOMP(KSUSY2+5),1)
+ IFIRST=.FALSE.
+ ENDIF
+
+ IF(NINT(3D0*E).EQ.2) THEN
+ HL=HLT(I)
+ HR=HRT(I)
+ FL=FLT(I)
+ FR=FRT(I)
+ COSD=SFMIX(6,1)
+ SIND=SFMIX(6,3)
+ XMS2(1)=PMAS(PYCOMP(KSUSY1+6),1)**2
+ XMS2(2)=PMAS(PYCOMP(KSUSY2+6),1)**2
+ XM=PMAS(6,1)
+ ELSE
+ HL=HLB(I)
+ HR=HRB(I)
+ FL=FLB(I)
+ FR=FRB(I)
+ COSD=SFMIX(5,1)
+ SIND=SFMIX(5,3)
+ XMS2(1)=PMAS(PYCOMP(KSUSY1+5),1)**2
+ XMS2(2)=PMAS(PYCOMP(KSUSY2+5),1)**2
+ XM=PMAS(5,1)
+ ENDIF
+ COSD2=COSD*COSD
+ SIND2=SIND*SIND
+ COS2D=COSD2-SIND2
+ SIN2D=SIND*COSD*2D0
+ HL2=HL*HL
+ HR2=HR*HR
+ FL2=FL*FL
+ FR2=FR*FR
+ FF=FL*FR
+ HH=HL*HR
+ HFL=HL*FL
+ HFR=HR*FR
+ HRFL=HR*FL
+ HLFR=HL*FR
+ XM2=XM*XM
+ XMG=XMGLU
+ XMG2=XMG*XMG
+ ALPHAW=PYALEM(XMG2)
+ ALPHAS=PYALPS(XMG2)
+ XMR=AMN(I)
+ XMR2=XMR*XMR
+ XMQ4=XMG*XM2*XMR
+ XM24=(XMG2+XM2)*(XM2+XMR2)
+ SMIN=4D0*XM2
+ SMAX=(XMG-ABS(XMR))**2
+ XMQA=XMG2+2D0*XM2+XMR2
+ DO 170 LIN=1,NN-1
+ SBAR=SMIN+DBLE(LIN)*(SMAX-SMIN)/DBLE(NN)
+ GRS=SBAR-XMQA
+ W=PYLAMF(XMG2,XMR2,SBAR)*(0.25D0-XM2/SBAR)
+ W=DSQRT(W)
+ XLN1=LOG(ABS((GRS/2D0+XMS2(1)-W)/(GRS/2D0+XMS2(1)+W)))
+ XLN2=LOG(ABS((GRS/2D0+XMS2(2)-W)/(GRS/2D0+XMS2(2)+W)))
+ B1=1D0/(GRS/2D0+XMS2(1)-W)-1D0/(GRS/2D0+XMS2(1)+W)
+ B2=1D0/(GRS/2D0+XMS2(2)-W)-1D0/(GRS/2D0+XMS2(2)+W)
+ G(0)=-2D0*(HL2+FL2+HR2+FR2+(HFR-HFL)*SIN2D
+ & +2D0*(FF*SIND2-HH*COSD2))*W
+ G(1)=((HL2+FL2)*(XMQA-2D0*XMS2(1)-2D0*XM*XMG*SIN2D)
+ & +4D0*HFL*XM*XMR)*XLN1
+ & +((HL2+FL2)*((XMQA-XMS2(1))*XMS2(1)-XM24
+ & +2D0*XM*XMG*(XM2+XMR2-XMS2(1))*SIN2D)
+ & -4D0*HFL*XMR*XM*(XMG2+XM2-XMS2(1))
+ & +8D0*HFL*XMQ4*SIN2D)*B1
+ G(2)=((HR2+FR2)*(XMQA-2D0*XMS2(2)+2D0*XM*XMG*SIN2D)
+ & +4D0*HFR*XMR*XM)*XLN2
+ & +((HR2+FR2)*((XMQA-XMS2(2))*XMS2(2)-XM24
+ & +2D0*XMG*XM*SIN2D*(XMS2(2)-XM2-XMR2))
+ & +4D0*HFR*XM*XMR*(XMS2(2)-XMG2-XM2)
+ & -8D0*HFR*XMQ4*SIN2D)*B2
+ G(3)=(2D0*HFL*SIN2D*(XMS2(1)*(GRS+XMS2(1))+XM2*(SBAR-XMG2-XMR2)
+ & +XMG2*XMR2+XM2*XM2)-2D0*XMR*XMG*(HL2*SIND2+FL2*COSD2)*SBAR
+ & -2D0*XMG*XM*HFL*(SBAR+XMR2-XMG2)
+ & +XMR*XM*(HL2+FL2)*SIN2D*(SBAR+XMG2-XMR2)
+ & -4D0*XMQ4*(HL2-FL2)*COS2D)/(GRS+2D0*XMS2(1))*XLN1
+ G(4)=4D0*COS2D*XM*XMG/(XMS2(1)-XMS2(2))*
+ & (((HLFR+HRFL)*(XM2+XMR2)+2D0*XM*XMR*(HH+FF))*(XLN1-XLN2)
+ & +(HLFR+HRFL)*(XMS2(2)*XLN2-XMS2(1)*XLN1))
+ G(5)=(2D0*(HH*COSD2-FF*SIND2)
+ & *((XMS2(2)*(XMS2(2)+GRS)+XM2*XM2+XMG2*XMR2)*XLN2
+ & +(XMS2(1)*(XMS2(1)+GRS)+XM2*XM2+XMG2*XMR2)*XLN1)
+ & +XM*((HH-FF)*SIN2D*XMG-(HRFL-HLFR)*XMR)
+ & *((GRS+XMS2(1)*2D0)*XLN1-(GRS+XMS2(2)*2D0)*XLN2)
+ & +((HRFL-HLFR)*XMR*(SIN2D*XMG*(SBAR-4D0*XM2)
+ & +COS2D*XM*(SBAR+XMG2-XMR2))
+ & +2D0*(FF*COSD2-HH*SIND2)*XM2*(SBAR-XMG2-XMR2))
+ & *(XLN1+XLN2))/(GRS+XMS2(1)+XMS2(2))
+ G(6)=(-2D0*HFR*SIN2D*(XMS2(2)*(GRS+XMS2(2))+XM2*(SBAR-XMG2-XMR2)
+ & +XMG2*XMR2+XM2*XM2)-2D0*XMR*XMG*(HR2*SIND2+FR2*COSD2)*SBAR
+ & -2D0*XMG*XM*HFR*(SBAR+XMR2-XMG2)
+ & -XMR*XM*(HR2+FR2)*SIN2D*(SBAR+XMG2-XMR2)
+ & -4D0*XMQ4*(HR2-FR2)*COS2D)/(GRS+2D0*XMS2(2))*XLN2
+ SUMME(LIN)=0D0
+ DO 160 J=0,6
+ SUMME(LIN)=SUMME(LIN)+G(J)
+ 160 CONTINUE
+ 170 CONTINUE
+ SUMME(0)=0D0
+ SUMME(NN)=0D0
+ GAM = ALPHAW * ALPHAS * PYSIMP(SUMME,SMIN,SMAX,NN)
+ &/ (16D0 * PARU(1) * PARU(102) * XMGLU**3)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTBBC
+C...Calculates the three-body decay of gluinos into
+C...charginos and third generation fermions.
+
+ SUBROUTINE PYTBBC(I,NN,XMGLU,GAM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/
+
+C...Local variables.
+ EXTERNAL PYSIMP,PYLAMF
+ DOUBLE PRECISION PYSIMP,PYLAMF
+ INTEGER I,NN,LIN
+ DOUBLE PRECISION XMG,XMG2,XMB,XMB2,XMR,XMR2
+ DOUBLE PRECISION XMT,XMT2,XMST(4),XMSB(4)
+ DOUBLE PRECISION ULR(2),VLR(2),XMQ2,XMQ4,AM,W,SBAR,SMIN,SMAX
+ DOUBLE PRECISION SUMME(0:100),A(4,8)
+ DOUBLE PRECISION COS2A,SIN2A,COS2C,SIN2C
+ DOUBLE PRECISION GRS,XMQ3,XMGBTR,XMGTBR,ANT1,ANT2,ANB1,ANB2
+ DOUBLE PRECISION XMGLU,GAM
+ DOUBLE PRECISION XX1(2),XX2(2),AAA(2),BBB(2),CCC(2),
+ &DDD(2),EEE(2),FFF(2)
+ SAVE XX1,XX2,AAA,BBB,CCC,DDD,EEE,FFF
+ DOUBLE PRECISION ALPHAW,ALPHAS
+ DOUBLE PRECISION AMC(2)
+ SAVE AMC
+ DOUBLE PRECISION AMBOT,AMSB(2),SINC,COSC
+ DOUBLE PRECISION AMTOP,AMST(2),SINA,COSA
+ SAVE AMSB,AMST
+ LOGICAL IFIRST
+ SAVE IFIRST
+ DATA IFIRST/.TRUE./
+
+ TANB=RMSS(5)
+ SINB=TANB/SQRT(1D0+TANB**2)
+ COSB=SINB/TANB
+ XW=PARU(102)
+ AMW=PMAS(24,1)
+ COSC=SFMIX(5,1)
+ SINC=SFMIX(5,3)
+ COSA=SFMIX(6,1)
+ SINA=SFMIX(6,3)
+ AMBOT=PYMRUN(5,XMGLU**2)
+ AMTOP=PYMRUN(6,XMGLU**2)
+ W2=SQRT(2D0)
+ AMW=PMAS(24,1)
+ FAKT1=AMBOT/W2/AMW/COSB
+ FAKT2=AMTOP/W2/AMW/SINB
+ IF(IFIRST) THEN
+ AMC(1)=SMW(1)
+ AMC(2)=SMW(2)
+ DO 100 JJ=1,2
+ CCC(JJ)=FAKT1*UMIX(JJ,2)*SINC-UMIX(JJ,1)*COSC
+ EEE(JJ)=FAKT2*VMIX(JJ,2)*COSC
+ DDD(JJ)=FAKT1*UMIX(JJ,2)*COSC+UMIX(JJ,1)*SINC
+ FFF(JJ)=FAKT2*VMIX(JJ,2)*SINC
+ XX1(JJ)=FAKT2*VMIX(JJ,2)*SINA-VMIX(JJ,1)*COSA
+ AAA(JJ)=FAKT1*UMIX(JJ,2)*COSA
+ XX2(JJ)=FAKT2*VMIX(JJ,2)*COSA+VMIX(JJ,1)*SINA
+ BBB(JJ)=FAKT1*UMIX(JJ,2)*SINA
+ 100 CONTINUE
+ AMST(1)=PMAS(PYCOMP(KSUSY1+6),1)
+ AMST(2)=PMAS(PYCOMP(KSUSY2+6),1)
+ AMSB(1)=PMAS(PYCOMP(KSUSY1+5),1)
+ AMSB(2)=PMAS(PYCOMP(KSUSY2+5),1)
+ IFIRST=.FALSE.
+ ENDIF
+
+ ULR(1)=XX1(I)*XX1(I)+AAA(I)*AAA(I)
+ ULR(2)=XX2(I)*XX2(I)+BBB(I)*BBB(I)
+ VLR(1)=CCC(I)*CCC(I)+EEE(I)*EEE(I)
+ VLR(2)=DDD(I)*DDD(I)+FFF(I)*FFF(I)
+
+ COS2A=COSA**2-SINA**2
+ SIN2A=SINA*COSA*2D0
+ COS2C=COSC**2-SINC**2
+ SIN2C=SINC*COSC*2D0
+
+ XMG=XMGLU
+ XMT=PMAS(6,1)
+ XMB=PMAS(5,1)
+ XMR=AMC(I)
+ XMG2=XMG*XMG
+ ALPHAW=PYALEM(XMG2)
+ ALPHAS=PYALPS(XMG2)
+ XMT2=XMT*XMT
+ XMB2=XMB*XMB
+ XMR2=XMR*XMR
+ XMQ2=XMG2+XMT2+XMB2+XMR2
+ XMQ4=XMG*XMT*XMB*XMR
+ XMQ3=XMG2*XMR2+XMT2*XMB2
+ XMGBTR=(XMG2+XMB2)*(XMT2+XMR2)
+ XMGTBR=(XMG2+XMT2)*(XMB2+XMR2)
+
+ XMST(1)=AMST(1)*AMST(1)
+ XMST(2)=AMST(1)*AMST(1)
+ XMST(3)=AMST(2)*AMST(2)
+ XMST(4)=AMST(2)*AMST(2)
+ XMSB(1)=AMSB(1)*AMSB(1)
+ XMSB(2)=AMSB(2)*AMSB(2)
+ XMSB(3)=AMSB(1)*AMSB(1)
+ XMSB(4)=AMSB(2)*AMSB(2)
+
+ A(1,1)=-COSA*SINC*CCC(I)*AAA(I)-SINA*COSC*EEE(I)*XX1(I)
+ A(1,2)=XMG*XMB*(COSA*COSC*CCC(I)*AAA(I)+SINA*SINC*EEE(I)*XX1(I))
+ A(1,3)=-XMG*XMR*(COSA*COSC*CCC(I)*XX1(I)+SINA*SINC*EEE(I)*AAA(I))
+ A(1,4)=XMB*XMR*(COSA*SINC*CCC(I)*XX1(I)+SINA*COSC*EEE(I)*AAA(I))
+ A(1,5)=XMG*XMT*(COSA*COSC*EEE(I)*XX1(I)+SINA*SINC*CCC(I)*AAA(I))
+ A(1,6)=-XMT*XMB*(COSA*SINC*EEE(I)*XX1(I)+SINA*COSC*CCC(I)*AAA(I))
+ A(1,7)=XMT*XMR*(COSA*SINC*EEE(I)*AAA(I)+SINA*COSC*CCC(I)*XX1(I))
+ A(1,8)=-XMQ4*(COSA*COSC*EEE(I)*AAA(I)+SINA*SINC*CCC(I)*XX1(I))
+
+ A(2,1)=-COSA*COSC*DDD(I)*AAA(I)-SINA*SINC*FFF(I)*XX1(I)
+ A(2,2)=-XMG*XMB*(COSA*SINC*DDD(I)*AAA(I)+SINA*COSC*FFF(I)*XX1(I))
+ A(2,3)=XMG*XMR*(COSA*SINC*DDD(I)*XX1(I)+SINA*COSC*FFF(I)*AAA(I))
+ A(2,4)=XMB*XMR*(COSA*COSC*DDD(I)*XX1(I)+SINA*SINC*FFF(I)*AAA(I))
+ A(2,5)=XMG*XMT*(COSA*SINC*FFF(I)*XX1(I)+SINA*COSC*DDD(I)*AAA(I))
+ A(2,6)=XMT*XMB*(COSA*COSC*FFF(I)*XX1(I)+SINA*SINC*DDD(I)*AAA(I))
+ A(2,7)=-XMT*XMR*(COSA*COSC*FFF(I)*AAA(I)+SINA*SINC*DDD(I)*XX1(I))
+ A(2,8)=-XMQ4*(COSA*SINC*FFF(I)*AAA(I)+SINA*COSC*DDD(I)*XX1(I))
+
+ A(3,1)=-COSA*COSC*EEE(I)*XX2(I)-SINA*SINC*CCC(I)*BBB(I)
+ A(3,2)=XMG*XMB*(COSA*SINC*EEE(I)*XX2(I)+SINA*COSC*CCC(I)*BBB(I))
+ A(3,3)=XMG*XMR*(COSA*SINC*EEE(I)*BBB(I)+SINA*COSC*CCC(I)*XX2(I))
+ A(3,4)=-XMB*XMR*(COSA*COSC*EEE(I)*BBB(I)+SINA*SINC*CCC(I)*XX2(I))
+ A(3,5)=-XMG*XMT*(COSA*SINC*CCC(I)*BBB(I)+SINA*COSC*EEE(I)*XX2(I))
+ A(3,6)=XMT*XMB*(COSA*COSC*CCC(I)*BBB(I)+SINA*SINC*EEE(I)*XX2(I))
+ A(3,7)=XMT*XMR*(COSA*COSC*CCC(I)*XX2(I)+SINA*SINC*EEE(I)*BBB(I))
+ A(3,8)=-XMQ4*(COSA*SINC*CCC(I)*XX2(I)+SINA*COSC*EEE(I)*BBB(I))
+
+ A(4,1)=-COSA*SINC*FFF(I)*XX2(I)-SINA*COSC*DDD(I)*BBB(I)
+ A(4,2)=-XMG*XMB*(COSA*COSC*FFF(I)*XX2(I)+SINA*SINC*DDD(I)*BBB(I))
+ A(4,3)=-XMG*XMR*(COSA*COSC*FFF(I)*BBB(I)+SINA*SINC*DDD(I)*XX2(I))
+ A(4,4)=-XMB*XMR*(COSA*SINC*FFF(I)*BBB(I)+SINA*COSC*DDD(I)*XX2(I))
+ A(4,5)=-XMG*XMT*(COSA*COSC*DDD(I)*BBB(I)+SINA*SINC*FFF(I)*XX2(I))
+ A(4,6)=-XMT*XMB*(COSA*SINC*DDD(I)*BBB(I)+SINA*COSC*FFF(I)*XX2(I))
+ A(4,7)=-XMT*XMR*(COSA*SINC*DDD(I)*XX2(I)+SINA*COSC*FFF(I)*BBB(I))
+ A(4,8)=-XMQ4*(COSA*COSC*DDD(I)*XX2(I)+SINA*SINC*FFF(I)*BBB(I))
+
+ SMAX=(XMG-ABS(XMR))**2
+ SMIN=(XMB+XMT)**2+0.1D0
+
+ DO 120 LIN=0,NN-1
+ SBAR=SMIN+DBLE(LIN)*(SMAX-SMIN)/DBLE(NN)
+ AM=(XMG2-XMR2)*(XMT2-XMB2)/2D0/SBAR
+ GRS=SBAR-XMQ2
+ W=PYLAMF(SBAR,XMB2,XMT2)*PYLAMF(SBAR,XMG2,XMR2)
+ W=DSQRT(W)/2D0/SBAR
+ ANT1=LOG(ABS((GRS/2D0+AM+XMST(1)-W)/(GRS/2D0+AM+XMST(1)+W)))
+ ANT2=LOG(ABS((GRS/2D0+AM+XMST(3)-W)/(GRS/2D0+AM+XMST(3)+W)))
+ ANB1=LOG(ABS((GRS/2D0-AM+XMSB(1)-W)/(GRS/2D0-AM+XMSB(1)+W)))
+ ANB2=LOG(ABS((GRS/2D0-AM+XMSB(2)-W)/(GRS/2D0-AM+XMSB(2)+W)))
+ SUMME(LIN)=-ULR(1)*W+(ULR(1)*(XMQ2/2D0-XMST(1)-XMG*XMT*SIN2A)
+ & +2D0*XX1(I)*AAA(I)*XMR*XMB)*ANT1
+ & +(ULR(1)/2D0*(XMST(1)*(XMQ2-XMST(1))-XMGTBR
+ & -2D0*XMG*XMT*SIN2A*(XMST(1)-XMB2-XMR2))
+ & +2D0*XX1(I)*AAA(I)*XMR*XMB*(XMST(1)-XMG2-XMT2)
+ & +4D0*SIN2A*XX1(I)*AAA(I)*XMQ4)
+ & *(1D0/(GRS/2D0+AM+XMST(1)-W)-1D0/(GRS/2D0+AM+XMST(1)+W))
+ SUMME(LIN)=SUMME(LIN)-ULR(2)*W
+ & +(ULR(2)*(XMQ2/2D0-XMST(3)+XMG*XMT*SIN2A)
+ & -2D0*XX2(I)*BBB(I)*XMR*XMB)*ANT2
+ & +(ULR(2)/2D0*(XMST(3)*(XMQ2-XMST(3))-XMGTBR
+ & +2D0*XMG*XMT*SIN2A*(XMST(3)-XMB2-XMR2))
+ & -2D0*XX2(I)*BBB(I)*XMR*XMB*(XMST(3)-XMG2-XMT2)
+ & +4D0*SIN2A*XX2(I)*BBB(I)*XMQ4)
+ & *(1D0/(GRS/2D0+AM+XMST(3)-W)-1D0/(GRS/2D0+AM+XMST(3)+W))
+ SUMME(LIN)=SUMME(LIN)-VLR(1)*W
+ & +(VLR(1)*(XMQ2/2D0-XMSB(1)-XMG*XMB*SIN2C)
+ & +2D0*CCC(I)*EEE(I)*XMR*XMT)*ANB1
+ & +(VLR(1)/2D0*(XMSB(1)*(XMQ2-XMSB(1))-XMGBTR
+ & -2D0*XMG*XMB*SIN2C*(XMSB(1)-XMT2-XMR2))
+ & +2D0*CCC(I)*EEE(I)*XMR*XMT*(XMSB(1)-XMG2-XMB2)
+ & +4D0*SIN2C*CCC(I)*EEE(I)*XMQ4)
+ & *(1D0/(GRS/2D0-AM+XMSB(1)-W)-1D0/(GRS/2D0-AM+XMSB(1)+W))
+ SUMME(LIN)=SUMME(LIN)-VLR(2)*W
+ & +(VLR(2)*(XMQ2/2D0-XMSB(2)+XMG*XMB*SIN2C)
+ & -2D0*DDD(I)*FFF(I)*XMR*XMT)*ANB2
+ & +(VLR(2)/2D0*(XMSB(2)*(XMQ2-XMSB(2))-XMGBTR
+ & +2D0*XMG*XMB*SIN2C*(XMSB(2)-XMT2-XMR2))
+ & -2D0*DDD(I)*FFF(I)*XMR*XMT*(XMSB(2)-XMG2-XMB2)
+ & +4D0*SIN2C*DDD(I)*FFF(I)*XMQ4)
+ & *(1D0/(GRS/2D0-AM+XMSB(2)-W)-1D0/(GRS/2D0-AM+XMSB(2)+W))
+ SUMME(LIN)=SUMME(LIN)+2D0*XMG*XMT*COS2A/(XMST(3)-XMST(1))
+ & *((AAA(I)*BBB(I)-XX1(I)*XX2(I))
+ & *((XMST(3)-XMB2-XMR2)*ANT2-(XMST(1)-XMB2-XMR2)*ANT1)
+ & +2D0*(AAA(I)*XX2(I)-XX1(I)*BBB(I))*XMB*XMR*(ANT2-ANT1))
+ SUMME(LIN)=SUMME(LIN)+2D0*XMG*XMB*COS2C/(XMSB(2)-XMSB(1))
+ & *((EEE(I)*FFF(I)-CCC(I)*DDD(I))
+ & *((XMSB(2)-XMT2-XMR2)*ANB2-(XMSB(1)-XMT2-XMR2)*ANB1)
+ & +2D0*(EEE(I)*DDD(I)-CCC(I)*FFF(I))*XMT*XMR*(ANB2-ANB1))
+ DO 110 J=1,4
+ SUMME(LIN)=SUMME(LIN)-2D0*A(J,1)*W
+ & +((-A(J,1)*(XMSB(J)*(GRS+XMSB(J))+XMQ3)
+ & +A(J,2)*(XMSB(J)-XMT2-XMR2)+A(J,3)*(SBAR-XMB2-XMT2)
+ & +A(J,4)*(XMSB(J)+SBAR-XMB2-XMR2)
+ & -A(J,5)*(XMSB(J)+SBAR-XMG2-XMT2)+A(J,6)*(XMG2+XMR2-SBAR)
+ & -A(J,7)*(XMSB(J)-XMG2-XMB2)+2D0*A(J,8))
+ & *LOG(ABS((GRS/2D0+XMSB(J)-AM-W)/(GRS/2D0+XMSB(J)-AM+W)))
+ & -(A(J,1)*(XMST(J)*(GRS+XMST(J))+XMQ3)
+ & +A(J,2)*(XMST(J)+SBAR-XMG2-XMB2)-A(J,3)*(SBAR-XMB2-XMT2)
+ & +A(J,4)*(XMST(J)-XMG2-XMT2)-A(J,5)*(XMST(J)-XMR2-XMB2)
+ & -A(J,6)*(XMG2+XMR2-SBAR)
+ & -A(J,7)*(XMST(J)+SBAR-XMT2-XMR2)-2D0*A(J,8))
+ & *LOG(ABS((GRS/2D0+XMST(J)+AM-W)/(GRS/2D0+XMST(J)+AM+W))))
+ & /(GRS+XMSB(J)+XMST(J))
+ 110 CONTINUE
+ 120 CONTINUE
+ SUMME(NN)=0D0
+ GAM= ALPHAW * ALPHAS * PYSIMP(SUMME,SMIN,SMAX,NN)
+ &/ (16D0 * PARU(1) * PARU(102) * XMGLU**3)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYNJDC
+C...Calculates decay widths for the neutralinos (admixtures of
+C...Bino, W3-ino, Higgs1-ino, Higgs2-ino)
+
+C...Input: KCIN = KF code for particle
+C...Output: XLAM = widths
+C... IDLAM = KF codes for decay particles
+C... IKNT = number of decay channels defined
+C...AUTHOR: STEPHEN MRENNA
+C...Last change:
+C...10-15-95: force decay chi^0_2 -> chi^0_1 + gamma
+C...when CHIGAMMA .NE. 0
+C...10 FEB 96: Calculate this decay for small tan(beta)
+
+ SUBROUTINE PYNJDC(KFIN,XLAM,IDLAM,IKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+c COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+c &SFMIX(16,4)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+C COMMON/PYINTS/XXM(20)
+ COMPLEX*16 CXC
+ COMMON/PYINTC/XXC(10),CXC(8)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/,/PYINTC/
+
+C...Local variables.
+ COMPLEX*16 ZMIXC(4,4),VMIXC(2,2),UMIXC(2,2),OLPP,ORPP,GLIJ,GRIJ
+ COMPLEX*16 QIJ,RIJ,F21K,F12K,CAL,CAR,CBL,CBR,CA,CB
+ INTEGER KFIN
+ DOUBLE PRECISION XMI,XMJ,XMF,XMSF1,XMSF2,XMW,XMW2,
+ &XMZ,XMZ2,AXMJ,AXMI
+ DOUBLE PRECISION S12MIN,S12MAX
+ DOUBLE PRECISION XMI2,XMI3,XMJ2,XMH,XMH2,XMHP,XMA2,XMB2
+ DOUBLE PRECISION PYLAMF,XL
+ DOUBLE PRECISION TANW,XW,AEM,C1,AS,EI,T3I
+ DOUBLE PRECISION PYX2XH,PYX2XG
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3)
+ INTEGER LKNT,IX,IH,J,IJ,I,IKNT,FID
+ INTEGER ITH(3),KF1,KF2
+ INTEGER ITHC
+ DOUBLE PRECISION DH(3),EH(3)
+ DOUBLE PRECISION SR2
+ DOUBLE PRECISION CBETA,SBETA
+ DOUBLE PRECISION GAMCON,XMT1,XMT2
+ DOUBLE PRECISION PYALEM,PI,PYALPS
+ DOUBLE PRECISION RAT1,RAT2
+ DOUBLE PRECISION T3T,FCOL
+ DOUBLE PRECISION ALFA,BETA,TANB
+ DOUBLE PRECISION PYXXGA
+ EXTERNAL PYGAUS,PYXXZ6
+ DOUBLE PRECISION PYGAUS,PYXXZ6
+ DOUBLE PRECISION PREC
+ INTEGER KFNCHI(4),KFCCHI(2)
+ DATA ITH/25,35,36/
+ DATA ITHC/37/
+ DATA PREC/1D-2/
+ DATA PI/3.141592654D0/
+ DATA SR2/1.4142136D0/
+ DATA KFNCHI/1000022,1000023,1000025,1000035/
+ DATA KFCCHI/1000024,1000037/
+
+C...COUNT THE NUMBER OF DECAY MODES
+ LKNT=0
+
+ XMW=PMAS(24,1)
+ XMW2=XMW**2
+ XMZ=PMAS(23,1)
+ XMZ2=XMZ**2
+ XW=1D0-XMW2/XMZ2
+ XW1=1D0-XW
+ TANW = SQRT(XW/XW1)
+
+C...IX IS 1 - 4 DEPENDING ON SEQUENCE NUMBER
+ IX=1
+ IF(KFIN.EQ.KFNCHI(2)) IX=2
+ IF(KFIN.EQ.KFNCHI(3)) IX=3
+ IF(KFIN.EQ.KFNCHI(4)) IX=4
+
+ XMI=SMZ(IX)
+ XMI2=XMI**2
+ AXMI=ABS(XMI)
+ AEM=PYALEM(XMI2)
+ AS =PYALPS(XMI2)
+ C1=AEM/XW
+ XMI3=ABS(XMI**3)
+
+ TANB=RMSS(5)
+ BETA=ATAN(TANB)
+ ALFA=RMSS(18)
+ CBETA=COS(BETA)
+ SBETA=TANB*CBETA
+ CALFA=COS(ALFA)
+ SALFA=SIN(ALFA)
+
+ DO 110 I=1,4
+ DO 100 J=1,4
+ ZMIXC(J,I)=DCMPLX(ZMIX(J,I),ZMIXI(J,I))
+ 100 CONTINUE
+ 110 CONTINUE
+ DO 130 I=1,2
+ DO 120 J=1,2
+ VMIXC(J,I)=DCMPLX(VMIX(J,I),VMIXI(J,I))
+ UMIXC(J,I)=DCMPLX(UMIX(J,I),UMIXI(J,I))
+ 120 CONTINUE
+ 130 CONTINUE
+
+C...CHECK ALL 2-BODY DECAYS TO GAUGE AND HIGGS BOSONS
+ IF(IX.EQ.1.AND.IMSS(11).EQ.0) GOTO 300
+
+C...FORCE CHI0_2 -> CHI0_1 + GAMMA
+ IF(IX.EQ.2 .AND. IMSS(10).NE.0 ) THEN
+ XMJ=SMZ(1)
+ AXMJ=ABS(XMJ)
+ LKNT=LKNT+1
+ GAMCON=AEM**3/8D0/PI/XMW2/XW
+ XMT1=(PMAS(PYCOMP(KSUSY1+6),1)/PMAS(6,1))**2
+ XMT2=(PMAS(PYCOMP(KSUSY2+6),1)/PMAS(6,1))**2
+ XLAM(LKNT)=PYXXGA(GAMCON,AXMI,AXMJ,XMT1,XMT2)
+ IDLAM(LKNT,1)=KSUSY1+22
+ IDLAM(LKNT,2)=22
+ IDLAM(LKNT,3)=0
+ WRITE(MSTU(11),*) 'FORCED N2 -> N1 + GAMMA ',XLAM(LKNT)
+ GOTO 340
+ ENDIF
+
+C...GRAVITINO DECAY MODES
+
+ IF(IMSS(11).EQ.1) THEN
+ XMP=RMSS(29)
+ IDG=39+KSUSY1
+ XMGR=PMAS(PYCOMP(IDG),1)
+ SINW=SQRT(XW)
+ COSW=SQRT(1D0-XW)
+ XFAC=(XMI2/(XMP*XMGR))**2*AXMI/48D0/PI
+ IF(AXMI.GT.XMGR+PMAS(22,1)) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=22
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*ABS(ZMIXC(IX,1)*COSW+ZMIXC(IX,2)*SINW)**2
+ ENDIF
+ IF(AXMI.GT.XMGR+XMZ) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=23
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*(ABS(ZMIXC(IX,1)*SINW-ZMIXC(IX,2)*COSW)**2 +
+ $ .5D0*ABS(ZMIXC(IX,3)*CBETA-ZMIXC(IX,4)*SBETA)**2)*
+ & (1D0-XMZ2/XMI2)**4
+ ENDIF
+ IF(AXMI.GT.XMGR+PMAS(25,1)) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=25
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*(ABS(ZMIXC(IX,3)*SALFA-ZMIXC(IX,4)*CALFA)**2)*
+ $ .5D0*(1D0-PMAS(25,1)**2/XMI2)**4
+ ENDIF
+ IF(AXMI.GT.XMGR+PMAS(35,1)) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=35
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*(ABS(ZMIXC(IX,3)*CALFA+ZMIXC(IX,4)*SALFA)**2)*
+ $ .5D0*(1D0-PMAS(35,1)**2/XMI2)**4
+ ENDIF
+ IF(AXMI.GT.XMGR+PMAS(36,1)) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=36
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*(ABS(ZMIXC(IX,3)*SBETA+ZMIXC(IX,4)*CBETA)**2)*
+ $ .5D0*(1D0-PMAS(36,1)**2/XMI2)**4
+ ENDIF
+ IF(IX.EQ.1) GOTO 300
+ ENDIF
+
+ DO 220 IJ=1,IX-1
+ XMJ=SMZ(IJ)
+ AXMJ=ABS(XMJ)
+ XMJ2=XMJ**2
+
+C...CHI0_I -> CHI0_J + GAMMA
+ IF(AXMI.GE.AXMJ.AND.SBETA/CBETA.LE.2D0) THEN
+ RAT1=ABS(ZMIXC(IJ,1))**2+ABS(ZMIXC(IJ,2))**2
+ RAT1=RAT1/( 1D-6+ABS(ZMIXC(IX,3))**2+ABS(ZMIXC(IX,4))**2 )
+ RAT2=ABS(ZMIXC(IX,1))**2+ABS(ZMIXC(IX,2))**2
+ RAT2=RAT2/( 1D-6+ABS(ZMIXC(IJ,3))**2+ABS(ZMIXC(IJ,4))**2 )
+ IF((RAT1.GT. 0.90D0 .AND. RAT1.LT. 1.10D0) .OR.
+ & (RAT2.GT. 0.90D0 .AND. RAT2.LT. 1.10D0)) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=22
+ IDLAM(LKNT,3)=0
+ GAMCON=AEM**3/8D0/PI/XMW2/XW
+ XMT1=(PMAS(PYCOMP(KSUSY1+6),1)/PMAS(6,1))**2
+ XMT2=(PMAS(PYCOMP(KSUSY2+6),1)/PMAS(6,1))**2
+ XLAM(LKNT)=PYXXGA(GAMCON,AXMI,AXMJ,XMT1,XMT2)
+ ENDIF
+ ENDIF
+
+C...CHI0_I -> CHI0_J + Z0
+ IF(AXMI.GE.AXMJ+XMZ) THEN
+ LKNT=LKNT+1
+ OLPP=(ZMIXC(IX,3)*DCONJG(ZMIXC(IJ,3))-
+ & ZMIXC(IX,4)*DCONJG(ZMIXC(IJ,4)))/2D0
+ ORPP=-DCONJG(OLPP)
+ GX2=ABS(OLPP)**2+ABS(ORPP)**2
+ GLR=DBLE(OLPP*DCONJG(ORPP))
+ XLAM(LKNT)=PYX2XG(C1/XMW2,XMI,XMJ,XMZ,GX2,GLR)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=23
+ IDLAM(LKNT,3)=0
+ ELSEIF(AXMI.GE.AXMJ) THEN
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ XXC(9)=XMZ
+ XXC(10)=PMAS(23,2)
+ OLPP=(ZMIXC(IX,3)*DCONJG(ZMIXC(IJ,3))-
+ & ZMIXC(IX,4)*DCONJG(ZMIXC(IJ,4)))/2D0
+ ORPP=DCONJG(OLPP)
+C...CHARGED LEPTONS
+ FID=11
+ XXC(5)=PMAS(PYCOMP(KSUSY1+FID),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+FID),1)
+ EI=KCHG(FID,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*
+ & DCONJG(T3I*ZMIXC(IJ,2)-TANW*(T3I-EI)*ZMIXC(IJ,1))
+ GRIJ=ZMIXC(IX,1)*DCONJG(ZMIXC(IJ,1))*(EI*TANW)**2
+ CXC(1)=DCMPLX((T3I-EI*XW)/XW1)*OLPP
+ CXC(2)=-GLIJ
+ CXC(3)=-DCMPLX((T3I-EI*XW)/XW1)*ORPP
+ CXC(4)=DCONJG(GLIJ)
+ CXC(5)=-DCMPLX((EI*XW)/XW1)*OLPP
+ CXC(6)=GRIJ
+ CXC(7)=DCMPLX((EI*XW)/XW1)*ORPP
+ CXC(8)=-DCONJG(GRIJ)
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ IF(XXC(6).LT.AXMI ) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+
+ IF(AXMI.GE.AXMJ+2D0*PMAS(11,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=FID
+ IDLAM(LKNT,3)=-FID
+ IF(AXMI.GE.AXMJ+2D0*PMAS(13,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=13
+ IDLAM(LKNT,3)=-13
+ ENDIF
+ ENDIF
+ 140 CONTINUE
+ IF(ABS(SFMIX(15,1)).GT.ABS(SFMIX(15,2))) THEN
+ XXC(5)=PMAS(PYCOMP(KSUSY1+15),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+15),1)
+ ELSE
+ XXC(6)=PMAS(PYCOMP(KSUSY1+15),1)
+ XXC(5)=PMAS(PYCOMP(KSUSY2+15),1)
+ ENDIF
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ IF(XXC(6).LT.AXMI ) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+
+ IF(AXMI.GE.AXMJ+2D0*PMAS(15,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=15
+ IDLAM(LKNT,3)=-15
+ ENDIF
+
+C...NEUTRINOS
+ 150 CONTINUE
+ FID=12
+ XXC(5)=PMAS(PYCOMP(KSUSY1+FID),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+FID),1)
+ EI=KCHG(FID,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*
+ & DCONJG(T3I*ZMIXC(IJ,2)-TANW*(T3I-EI)*ZMIXC(IJ,1))
+ GRIJ=ZMIXC(IX,1)*DCONJG(ZMIXC(IJ,1))*(EI*TANW)**2
+ CXC(1)=DCMPLX((T3I-EI*XW)/XW1)*OLPP
+ CXC(2)=-GLIJ
+ CXC(3)=-DCMPLX((T3I-EI*XW)/XW1)*ORPP
+ CXC(4)=DCONJG(GLIJ)
+ CXC(5)=-DCMPLX((EI*XW)/XW1)*OLPP
+ CXC(6)=GRIJ
+ CXC(7)=DCMPLX((EI*XW)/XW1)*ORPP
+ CXC(8)=-DCONJG(GRIJ)
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ IF( XXC(6).LT.AXMI ) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=12
+ IDLAM(LKNT,3)=-12
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=14
+ IDLAM(LKNT,3)=-14
+ 160 CONTINUE
+
+ IF(PMAS(PYCOMP(KSUSY1+16),1).NE.PMAS(PYCOMP(KSUSY1+12),1))
+ & THEN
+ XXC(5)=PMAS(PYCOMP(KSUSY1+16),1)
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)
+ ELSE
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ ENDIF
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=16
+ IDLAM(LKNT,3)=-16
+C...D-TYPE QUARKS
+ 170 CONTINUE
+ FID=1
+ XXC(5)=PMAS(PYCOMP(KSUSY1+FID),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+FID),1)
+ EI=KCHG(FID,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*
+ & DCONJG(T3I*ZMIXC(IJ,2)-TANW*(T3I-EI)*ZMIXC(IJ,1))
+ GRIJ=ZMIXC(IX,1)*DCONJG(ZMIXC(IJ,1))*(EI*TANW)**2
+ CXC(1)=DCMPLX((T3I-EI*XW)/XW1)*OLPP
+ CXC(2)=-GLIJ
+ CXC(3)=-DCMPLX((T3I-EI*XW)/XW1)*ORPP
+ CXC(4)=DCONJG(GLIJ)
+ CXC(5)=-DCMPLX((EI*XW)/XW1)*OLPP
+ CXC(6)=GRIJ
+ CXC(7)=DCMPLX((EI*XW)/XW1)*ORPP
+ CXC(8)=-DCONJG(GRIJ)
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ IF( XXC(6).LT.AXMI ) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+
+ IF(AXMI.GE.AXMJ+2D0*PMAS(1,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)*3D0
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=1
+ IDLAM(LKNT,3)=-1
+ IF(AXMI.GE.AXMJ+2D0*PMAS(3,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=3
+ IDLAM(LKNT,3)=-3
+ ENDIF
+ ENDIF
+ 180 CONTINUE
+ IF(ABS(SFMIX(5,1)).GT.ABS(SFMIX(5,2))) THEN
+ XXC(5)=PMAS(PYCOMP(KSUSY1+5),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+5),1)
+ ELSE
+ XXC(6)=PMAS(PYCOMP(KSUSY1+5),1)
+ XXC(5)=PMAS(PYCOMP(KSUSY2+5),1)
+ ENDIF
+ IF( XXC(5).LT.AXMI .AND. XXC(6).LT.AXMI ) GOTO 190
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ELSEIF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ IF(AXMI.GE.AXMJ+2D0*PMAS(5,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)*3D0
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=5
+ IDLAM(LKNT,3)=-5
+ ENDIF
+
+C...U-TYPE QUARKS
+ 190 CONTINUE
+ FID=2
+ XXC(5)=PMAS(PYCOMP(KSUSY1+FID),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+FID),1)
+ EI=KCHG(FID,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*
+ & DCONJG(T3I*ZMIXC(IJ,2)-TANW*(T3I-EI)*ZMIXC(IJ,1))
+ GRIJ=ZMIXC(IX,1)*DCONJG(ZMIXC(IJ,1))*(EI*TANW)**2
+ CXC(1)=DCMPLX((T3I-EI*XW)/XW1)*OLPP
+ CXC(2)=-GLIJ
+ CXC(3)=-DCMPLX((T3I-EI*XW)/XW1)*ORPP
+ CXC(4)=DCONJG(GLIJ)
+ CXC(5)=-DCMPLX((EI*XW)/XW1)*OLPP
+ CXC(6)=GRIJ
+ CXC(7)=DCMPLX((EI*XW)/XW1)*ORPP
+ CXC(8)=-DCONJG(GRIJ)
+
+ IF( XXC(5).LT.AXMI .AND. XXC(6).LT.AXMI ) GOTO 200
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ELSEIF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+
+ IF(AXMI.GE.AXMJ+2D0*PMAS(2,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)*3D0
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=2
+ IDLAM(LKNT,3)=-2
+ IF(AXMI.GE.AXMJ+2D0*PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=4
+ IDLAM(LKNT,3)=-4
+ ENDIF
+ ENDIF
+ 200 CONTINUE
+ ENDIF
+
+C...CHI0_I -> CHI0_J + H0_K
+ EH(1)=SIN(ALFA)
+ EH(2)=COS(ALFA)
+ EH(3)=-SIN(BETA)
+ DH(1)=COS(ALFA)
+ DH(2)=-SIN(ALFA)
+ DH(3)=COS(BETA)
+ QIJ=ZMIXC(IX,3)*DCONJG(ZMIXC(IJ,2))+
+ & DCONJG(ZMIXC(IJ,3))*ZMIXC(IX,2)-
+ & TANW*(ZMIXC(IX,3)*DCONJG(ZMIXC(IJ,1))+
+ & DCONJG(ZMIXC(IJ,3))*ZMIXC(IX,1))
+ RIJ=DCONJG(ZMIXC(IX,4))*ZMIXC(IJ,2)+
+ & ZMIXC(IJ,4)*DCONJG(ZMIXC(IX,2))-
+ & TANW*(DCONJG(ZMIXC(IX,4))*ZMIXC(IJ,1)+
+ & ZMIXC(IJ,4)*DCONJG(ZMIXC(IX,1)))
+ DO 210 IH=1,3
+ XMH=PMAS(ITH(IH),1)
+ XMH2=XMH**2
+ IF(AXMI.GE.AXMJ+XMH) THEN
+ LKNT=LKNT+1
+ XL=PYLAMF(XMI2,XMJ2,XMH2)
+ F21K=0.5D0*(QIJ*EH(IH)+RIJ*DH(IH))
+ F12K=F21K
+C...SIGN OF MASSES I,J
+ XMK=XMJ
+ IF(IH.EQ.3) XMK=-XMK
+ GX2=ABS(F21K)**2+ABS(F12K)**2
+ GLR=DBLE(F21K*DCONJG(F12K))
+ XLAM(LKNT)=PYX2XH(C1,XMI,XMK,XMH,GX2,GLR)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=ITH(IH)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 210 CONTINUE
+ 220 CONTINUE
+
+C...CHI0_I -> CHI+_J + W-
+ DO 260 IJ=1,2
+ XMJ=SMW(IJ)
+ AXMJ=ABS(XMJ)
+ XMJ2=XMJ**2
+ IF(AXMI.GE.AXMJ+XMW) THEN
+ LKNT=LKNT+1
+ CXC(1)=(DCONJG(ZMIXC(IX,2))*VMIXC(IJ,1)-
+ & DCONJG(ZMIXC(IX,4))*VMIXC(IJ,2)/SR2)
+ CXC(3)=(ZMIXC(IX,2)*DCONJG(UMIXC(IJ,1))+
+ & ZMIXC(IX,3)*DCONJG(UMIXC(IJ,2))/SR2)
+ GX2=ABS(CXC(1))**2+ABS(CXC(3))**2
+ GLR=DBLE(CXC(1)*DCONJG(CXC(3)))
+ XLAM(LKNT)=PYX2XG(C1/XMW2,XMI,XMJ,XMW,GX2,GLR)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=-24
+ IDLAM(LKNT,3)=0
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-KFCCHI(IJ)
+ IDLAM(LKNT,2)=24
+ IDLAM(LKNT,3)=0
+ ELSEIF(AXMI.GE.AXMJ) THEN
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ RT2I = 1D0/SQRT(2D0)
+ CXC(1)=(DCONJG(ZMIXC(IX,2))*VMIXC(IJ,1)-
+ & DCONJG(ZMIXC(IX,4))*VMIXC(IJ,2)*RT2I)*RT2I
+ CXC(3)=(ZMIXC(IX,2)*DCONJG(UMIXC(IJ,1))+
+ & ZMIXC(IX,3)*DCONJG(UMIXC(IJ,2))*RT2I)*RT2I
+ CXC(5)=DCMPLX(0D0,0D0)
+ CXC(7)=DCMPLX(0D0,0D0)
+ IA=11
+ JA=12
+ EI=KCHG(IA,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ EJ=KCHG(JA,1)/3D0
+ T3J=SIGN(1D0,EJ+1D-6)/2D0
+ CXC(2)=VMIXC(IJ,1)*DCONJG(ZMIXC(IX,1)*(EJ-T3J)*
+ & TANW+ZMIXC(IX,2)*T3J)*RT2I
+ CXC(4)=-DCONJG(UMIXC(IJ,1))*(
+ & ZMIXC(IX,1)*(EI-T3I)*TANW+ZMIXC(IX,2)*T3I)*RT2I
+ CXC(6)=DCMPLX(0D0,0D0)
+ CXC(8)=DCMPLX(0D0,0D0)
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ XXC(5)=PMAS(PYCOMP(KSUSY1+JA),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+IA),1)
+ XXC(9)=PMAS(24,1)
+ XXC(10)=PMAS(24,2)
+ IF( XXC(5).LT.AXMI .AND. XXC(6).LT.AXMI ) GOTO 230
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ELSEIF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+ IF(AXMI.GE.AXMJ+PMAS(11,1)+PMAS(12,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=11
+ IDLAM(LKNT,3)=-12
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ IF(AXMI.GE.AXMJ+PMAS(13,1)+PMAS(14,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=13
+ IDLAM(LKNT,3)=-14
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ ENDIF
+ ENDIF
+ 230 CONTINUE
+ IF(ABS(SFMIX(15,1)).GT.ABS(SFMIX(15,2))) THEN
+ XXC(5)=PMAS(PYCOMP(KSUSY1+15),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+16),1)
+ ELSE
+ XXC(5)=PMAS(PYCOMP(KSUSY2+15),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+16),1)
+ ENDIF
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ENDIF
+ IF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+ IF(AXMI.GE.AXMJ+PMAS(15,1)+PMAS(16,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=15
+ IDLAM(LKNT,3)=-16
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ ENDIF
+
+C...NOW, DO THE QUARKS
+ 240 CONTINUE
+ IA=1
+ JA=2
+ EI=KCHG(IA,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ EJ=KCHG(JA,1)/3D0
+ T3J=SIGN(1D0,EJ+1D-6)/2D0
+ CXC(2)=VMIXC(IJ,1)*DCONJG(ZMIXC(IX,1)*(EJ-T3J)*
+ & TANW+ZMIXC(IX,2)*T3J)
+ CXC(4)=-DCONJG(UMIXC(IJ,1))*(
+ & ZMIXC(IX,1)*(EI-T3I)*TANW+ZMIXC(IX,2)*T3I)
+ XXC(5)=PMAS(PYCOMP(KSUSY1+IA),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+JA),1)
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ENDIF
+ IF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+ IF(AXMI.GE.AXMJ+PMAS(2,1)+PMAS(1,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=3D0*C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=1
+ IDLAM(LKNT,3)=-2
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ IF(AXMI.GE.AXMJ+PMAS(3,1)+PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=3
+ IDLAM(LKNT,3)=-4
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ ENDIF
+ ENDIF
+ 250 CONTINUE
+ ENDIF
+ 260 CONTINUE
+ 270 CONTINUE
+
+C...CHI0_I -> CHI+_I + H-
+ DO 280 IJ=1,2
+ XMJ=SMW(IJ)
+ AXMJ=ABS(XMJ)
+ XMJ2=XMJ**2
+ XMHP=PMAS(ITHC,1)
+ IF(AXMI.GE.AXMJ+XMHP) THEN
+ LKNT=LKNT+1
+ OLPP=CBETA*(ZMIXC(IX,4)*DCONJG(VMIXC(IJ,1))+(ZMIXC(IX,2)+
+ & ZMIXC(IX,1)*TANW)*DCONJG(VMIXC(IJ,2))/SR2)
+ ORPP=SBETA*(DCONJG(ZMIXC(IX,3))*UMIXC(IJ,1)-
+ & (DCONJG(ZMIXC(IX,2))+DCONJG(ZMIXC(IX,1))*TANW)*
+ & UMIXC(IJ,2)/SR2)
+ GX2=ABS(OLPP)**2+ABS(ORPP)**2
+ GLR=DBLE(OLPP*DCONJG(ORPP))
+ XLAM(LKNT)=PYX2XH(C1,XMI,XMJ,XMHP,GX2,GLR)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=-ITHC
+ IDLAM(LKNT,3)=0
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ ELSE
+
+ ENDIF
+ 280 CONTINUE
+
+C...2-BODY DECAYS TO FERMION SFERMION
+ DO 290 J=1,16
+ IF(J.GE.7.AND.J.LE.10) GOTO 290
+ KF1=KSUSY1+J
+ KF2=KSUSY2+J
+ XMSF1=PMAS(PYCOMP(KF1),1)
+ XMSF2=PMAS(PYCOMP(KF2),1)
+ XMF=PMAS(J,1)
+ IF(J.LE.6) THEN
+ FCOL=3D0
+ ELSE
+ FCOL=1D0
+ ENDIF
+
+ EI=KCHG(J,1)/3D0
+ T3T=SIGN(1D0,EI)
+ IF(J.EQ.12.OR.J.EQ.14.OR.J.EQ.16) T3T=1D0
+ IF(MOD(J,2).EQ.0) THEN
+ CBL=T3T*ZMIXC(IX,2)+TANW*ZMIXC(IX,1)*(2D0*EI-T3T)
+ CAL=XMF*ZMIXC(IX,4)/XMW/SBETA
+ CAR=-2D0*EI*TANW*ZMIXC(IX,1)
+ CBR=CAL
+ ELSE
+ CBL=T3T*ZMIXC(IX,2)+TANW*ZMIXC(IX,1)*(2D0*EI-T3T)
+ CAL=XMF*ZMIXC(IX,3)/XMW/CBETA
+ CAR=-2D0*EI*TANW*ZMIXC(IX,1)
+ CBR=CAL
+ ENDIF
+
+C...D~ D_L
+ IF(AXMI.GE.XMF+XMSF1) THEN
+ LKNT=LKNT+1
+ XMA2=XMSF1**2
+ XMB2=XMF**2
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+ CA=CAL*SFMIX(J,1)+CAR*SFMIX(J,2)
+ CB=CBL*SFMIX(J,1)+CBR*SFMIX(J,2)
+ XLAM(LKNT)=0.5D0*FCOL*C1/8D0/XMI3*SQRT(XL)*( (XMI2+XMB2-XMA2)*
+ & (ABS(CA)**2+ABS(CB)**2)+4D0*DBLE(CA*DCONJG(CB))*XMF*XMI)
+ IDLAM(LKNT,1)=KF1
+ IDLAM(LKNT,2)=-J
+ IDLAM(LKNT,3)=0
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+C...D~ D_R
+ IF(AXMI.GE.XMF+XMSF2) THEN
+ LKNT=LKNT+1
+ XMA2=XMSF2**2
+ XMB2=XMF**2
+ CA=CAL*SFMIX(J,3)+CAR*SFMIX(J,4)
+ CB=CBL*SFMIX(J,3)+CBR*SFMIX(J,4)
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+ XLAM(LKNT)=0.5D0*FCOL*C1/8D0/XMI3*SQRT(XL)*( (XMI2+XMB2-XMA2)*
+ & (ABS(CA)**2+ABS(CB)**2)+4D0*DBLE(CA*DCONJG(CB))*XMF*XMI)
+ IDLAM(LKNT,1)=KF2
+ IDLAM(LKNT,2)=-J
+ IDLAM(LKNT,3)=0
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 290 CONTINUE
+ 300 CONTINUE
+C...3-BODY DECAY TO Q Q~ GLUINO
+ XMJ=PMAS(PYCOMP(KSUSY1+21),1)
+ IF(AXMI.GE.XMJ) THEN
+ RT2I = 1D0/SQRT(2D0)
+ OLPP=DCMPLX(COS(RMSS(32)),SIN(RMSS(32)))*RT2I
+ ORPP=DCONJG(OLPP)
+ AXMJ=ABS(XMJ)
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ FID=1
+ XXC(5)=PMAS(PYCOMP(KSUSY1+FID),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+FID),1)
+ IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 310
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ XXC(9)=1D6
+ XXC(10)=0D0
+ EI=KCHG(FID,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*OLPP
+ GRIJ=ZMIXC(IX,1)*(EI*TANW)*ORPP
+ CXC(1)=0D0
+ CXC(2)=-GLIJ
+ CXC(3)=0D0
+ CXC(4)=DCONJG(GLIJ)
+ CXC(5)=0D0
+ CXC(6)=GRIJ
+ CXC(7)=0D0
+ CXC(8)=-DCONJG(GRIJ)
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+C...ALL QUARKS BUT T
+ IF(AXMI.GE.AXMJ+2D0*PMAS(1,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=4D0*C1*AS/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=1
+ IDLAM(LKNT,3)=-1
+ IF(AXMI.GE.AXMJ+2D0*PMAS(3,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=3
+ IDLAM(LKNT,3)=-3
+ ENDIF
+ ENDIF
+ 310 CONTINUE
+ IF(ABS(SFMIX(5,1)).GT.ABS(SFMIX(5,2))) THEN
+ XXC(5)=PMAS(PYCOMP(KSUSY1+5),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+5),1)
+ ELSE
+ XXC(6)=PMAS(PYCOMP(KSUSY1+5),1)
+ XXC(5)=PMAS(PYCOMP(KSUSY2+5),1)
+ ENDIF
+ IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 320
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ IF(AXMI.GE.AXMJ+2D0*PMAS(5,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=0.5D0*C1*AS/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=5
+ IDLAM(LKNT,3)=-5
+ ENDIF
+C...U-TYPE QUARKS
+ 320 CONTINUE
+ FID=2
+ XXC(5)=PMAS(PYCOMP(KSUSY1+FID),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY2+FID),1)
+ IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 330
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ EI=KCHG(FID,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ GLIJ=(T3I*ZMIXC(IX,2)-TANW*(T3I-EI)*ZMIXC(IX,1))*OLPP
+ GRIJ=ZMIXC(IX,1)*(EI*TANW)*ORPP
+ CXC(2)=-GLIJ
+ CXC(4)=DCONJG(GLIJ)
+ CXC(6)=GRIJ
+ CXC(8)=-DCONJG(GRIJ)
+ IF(AXMI.GE.AXMJ+2D0*PMAS(2,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=0.5D0*C1*AS/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,1D-3)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=2
+ IDLAM(LKNT,3)=-2
+ IF(AXMI.GE.AXMJ+2D0*PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=4
+ IDLAM(LKNT,3)=-4
+ ENDIF
+ ENDIF
+ 330 CONTINUE
+ ENDIF
+
+C...R-violating decay modes (SKANDS).
+ CALL PYRVNE(KFIN,XLAM,IDLAM,LKNT)
+
+ 340 IKNT=LKNT
+ XLAM(0)=0D0
+ DO 350 I=1,IKNT
+ IF(XLAM(I).LT.0D0) XLAM(I)=0D0
+ XLAM(0)=XLAM(0)+XLAM(I)
+ 350 CONTINUE
+ IF(XLAM(0).EQ.0D0) XLAM(0)=1D-6
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCJDC
+C...Calculate decay widths for the charginos (admixtures of
+C...charged Wino and charged Higgsino.
+
+C...Input: KCIN = KF code for particle
+C...Output: XLAM = widths
+C... IDLAM = KF codes for decay particles
+C... IKNT = number of decay channels defined
+C...AUTHOR: STEPHEN MRENNA
+C...Last change:
+C...10-16-95: force decay chi^+_1 -> chi^0_1 e+ nu_e
+C...when CHIENU .NE. 0
+
+ SUBROUTINE PYCJDC(KFIN,XLAM,IDLAM,IKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+CC &SFMIX(16,4),
+C COMMON/PYINTS/XXM(20)
+ COMPLEX*16 CXC
+ COMMON/PYINTC/XXC(10),CXC(8)
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/,/PYINTC/
+
+C...Local variables
+ COMPLEX*16 ZMIXC(4,4),VMIXC(2,2),UMIXC(2,2),OLPP,ORPP
+ COMPLEX*16 CAL,CBL,CAR,CBR,CA,CB
+ INTEGER KFIN,KCIN
+ DOUBLE PRECISION XMI,XMJ,XMF,XMSF1,XMSF2,XMW,XMW2,
+ &XMZ,XMZ2,AXMJ,AXMI
+ DOUBLE PRECISION S12MIN,S12MAX
+ DOUBLE PRECISION XMI2,XMI3,XMJ2,XMH,XMH2,XMHP,XMA2,XMB2,XMK
+ DOUBLE PRECISION PYLAMF,XL
+ DOUBLE PRECISION TANW,XW,AEM,C1,AS,EI,T3I,BETA,ALFA
+ DOUBLE PRECISION PYX2XH,PYX2XG
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3)
+ INTEGER LKNT,IX,IH,J,IJ,I,IKNT
+ INTEGER ITH(3)
+ INTEGER ITHC
+ DOUBLE PRECISION ETAH(3),DH(3),EH(3)
+ DOUBLE PRECISION SR2
+ DOUBLE PRECISION CBETA,SBETA,TANB
+
+ DOUBLE PRECISION PYALEM,PI,PYALPS
+ DOUBLE PRECISION FCOL
+ INTEGER KF1,KF2,ISF
+ INTEGER KFNCHI(4),KFCCHI(2)
+
+ DOUBLE PRECISION TEMP
+ EXTERNAL PYGAUS,PYXXZ6
+ DOUBLE PRECISION PYGAUS,PYXXZ6
+ DOUBLE PRECISION PREC
+ DATA ITH/25,35,36/
+ DATA ITHC/37/
+ DATA ETAH/1D0,1D0,-1D0/
+ DATA SR2/1.4142136D0/
+ DATA PI/3.141592654D0/
+ DATA PREC/1D-2/
+ DATA KFNCHI/1000022,1000023,1000025,1000035/
+ DATA KFCCHI/1000024,1000037/
+
+C...COUNT THE NUMBER OF DECAY MODES
+ LKNT=0
+ XMW=PMAS(24,1)
+ XMW2=XMW**2
+ XMZ=PMAS(23,1)
+ XMZ2=XMZ**2
+ XW=1D0-XMW2/XMZ2
+ XW1=1D0-XW
+ TANW = SQRT(XW/XW1)
+
+C...1 OR 2 DEPENDING ON CHARGINO TYPE
+ IX=1
+ IF(KFIN.EQ.KFCCHI(2)) IX=2
+ KCIN=PYCOMP(KFIN)
+
+ XMI=SMW(IX)
+ XMI2=XMI**2
+ AXMI=ABS(XMI)
+ AEM=PYALEM(XMI2)
+ AS =PYALPS(XMI2)
+ C1=AEM/XW
+ XMI3=ABS(XMI**3)
+ TANB=RMSS(5)
+ BETA=ATAN(TANB)
+ CBETA=COS(BETA)
+ SBETA=TANB*CBETA
+ ALFA=RMSS(18)
+
+ DO 110 I=1,2
+ DO 100 J=1,2
+ VMIXC(J,I)=DCMPLX(VMIX(J,I),VMIXI(J,I))
+ UMIXC(J,I)=DCMPLX(UMIX(J,I),UMIXI(J,I))
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...GRAVITINO DECAY MODES
+
+ IF(IMSS(11).EQ.1) THEN
+ XMP=RMSS(29)
+ IDG=39+KSUSY1
+ XMGR=PMAS(PYCOMP(IDG),1)
+C SINW=SQRT(XW)
+C COSW=SQRT(1D0-XW)
+ XFAC=(XMI2/(XMP*XMGR))**2*AXMI/48D0/PI
+ IF(AXMI.GT.XMGR+XMW) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=24
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*(
+ & .5D0*(ABS(VMIXC(IX,1))**2+ABS(UMIXC(IX,1))**2)+
+ & .5D0*((ABS(VMIXC(IX,2))*SBETA)**2+(ABS(UMIXC(IX,2))*CBETA)**2))*
+ & (1D0-XMW2/XMI2)**4
+ ENDIF
+ IF(AXMI.GT.XMGR+PMAS(37,1)) THEN
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=IDG
+ IDLAM(LKNT,2)=37
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XFAC*(.5D0*((ABS(VMIXC(IX,2))*CBETA)**2+
+ & (ABS(UMIXC(IX,2))*SBETA)**2))
+ & *(1D0-PMAS(37,1)**2/XMI2)**4
+ ENDIF
+ ENDIF
+
+C...CHECK ALL 2-BODY DECAYS TO GAUGE AND HIGGS BOSONS
+ IF(IX.EQ.1) GOTO 170
+ XMJ=SMW(1)
+ AXMJ=ABS(XMJ)
+ XMJ2=XMJ**2
+
+C...CHI_2+ -> CHI_1+ + Z0
+ IF(AXMI.GE.AXMJ+XMZ) THEN
+ LKNT=LKNT+1
+ IJ=1
+ OLPP=-VMIXC(IJ,1)*DCONJG(VMIXC(IX,1))-
+ & VMIXC(IJ,2)*DCONJG(VMIXC(IX,2))/2D0
+ ORPP=-UMIXC(IX,1)*DCONJG(UMIXC(IJ,1))-
+ & UMIXC(IX,2)*DCONJG(UMIXC(IJ,2))/2D0
+ GX2=ABS(OLPP)**2+ABS(ORPP)**2
+ GLR=DBLE(OLPP*DCONJG(ORPP))
+ XLAM(LKNT)=PYX2XG(C1/XMW2,XMI,XMJ,XMZ,GX2,GLR)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=23
+ IDLAM(LKNT,3)=0
+
+C...CHARGED LEPTONS
+ ELSEIF(AXMI.GE.AXMJ) THEN
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ IA=11
+ JA=12
+ EI=KCHG(IABS(IA),1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ XXC(5)=PMAS(PYCOMP(KSUSY1+JA),1)
+ XXC(6)=1D6
+ XXC(9)=PMAS(23,1)
+ XXC(10)=PMAS(23,2)
+ IJ=1
+ OLPP=-VMIXC(IJ,1)*DCONJG(VMIXC(IX,1))-
+ & VMIXC(IJ,2)*DCONJG(VMIXC(IX,2))/2D0
+ ORPP=-UMIXC(IX,1)*DCONJG(UMIXC(IJ,1))-
+ & UMIXC(IX,2)*DCONJG(UMIXC(IJ,2))/2D0
+ CXC(1)=DCMPLX((T3I-XW*EI)/XW/XW1)*ORPP
+ CXC(2)=DCMPLX(0D0,0D0)
+ CXC(3)=DCMPLX((T3I-XW*EI)/XW/XW1)*OLPP
+ CXC(4)=-VMIXC(IJ,1)*DCONJG(VMIXC(IX,1))*DCMPLX(T3I/XW)
+ CXC(5)=-DCMPLX(EI/XW1)*ORPP
+ CXC(6)=DCMPLX(0D0,0D0)
+ CXC(7)=-DCMPLX(EI/XW1)*OLPP
+ CXC(8)=DCMPLX(0D0,0D0)
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ IF(AXMI.GE.AXMJ+2D0*PMAS(11,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=11
+ IDLAM(LKNT,3)=-11
+ IF(AXMI.GE.AXMJ+2D0*PMAS(13,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=13
+ IDLAM(LKNT,3)=-13
+ ENDIF
+ IF(AXMI.GE.AXMJ+2D0*PMAS(15,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=15
+ IDLAM(LKNT,3)=-15
+ ENDIF
+ ENDIF
+
+C...NEUTRINOS
+ 120 CONTINUE
+ IA=12
+ JA=11
+ EI=KCHG(IABS(IA),1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ XXC(5)=PMAS(PYCOMP(KSUSY1+JA),1)
+ XXC(6)=1D6
+ CXC(1)=DCMPLX((T3I-XW*EI)/XW/XW1)*ORPP
+ CXC(3)=DCMPLX((T3I-XW*EI)/XW/XW1)*OLPP
+ CXC(4)=-UMIXC(IJ,1)*DCONJG(UMIXC(IX,1))*DCMPLX(T3I/XW)
+ CXC(5)=-DCMPLX(EI/XW1)*ORPP
+ CXC(7)=-DCMPLX(EI/XW1)*OLPP
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ IF(AXMI.GE.AXMJ+2D0*PMAS(12,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=12
+ IDLAM(LKNT,3)=-12
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=14
+ IDLAM(LKNT,3)=-14
+ ENDIF
+ IF(AXMI.GE.AXMJ+2D0*PMAS(16,1)) THEN
+ IF(ABS(SFMIX(15,1)).GT.ABS(SFMIX(15,2))) THEN
+ XXC(5)=PMAS(PYCOMP(KSUSY1+15),1)
+ ELSE
+ XXC(5)=PMAS(PYCOMP(KSUSY2+15),1)
+ ENDIF
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ LKNT=LKNT+1
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=16
+ IDLAM(LKNT,3)=-16
+ ENDIF
+
+C...D-TYPE QUARKS
+ 130 CONTINUE
+ IA=1
+ JA=2
+ EI=KCHG(IABS(IA),1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ XXC(5)=PMAS(PYCOMP(KSUSY1+JA),1)
+ XXC(6)=1D6
+ CXC(1)=DCMPLX((T3I-XW*EI)/XW/XW1)*ORPP
+ CXC(2)=DCMPLX(0D0,0D0)
+ CXC(3)=DCMPLX((T3I-XW*EI)/XW/XW1)*OLPP
+ CXC(4)=-VMIXC(IJ,1)*DCONJG(VMIXC(IX,1))*DCMPLX(T3I/XW)
+ CXC(5)=-DCMPLX(EI/XW1)*ORPP
+ CXC(6)=DCMPLX(0D0,0D0)
+ CXC(7)=-DCMPLX(EI/XW1)*OLPP
+ CXC(8)=DCMPLX(0D0,0D0)
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ IF(AXMI.GE.AXMJ+2D0*PMAS(1,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=3D0*C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=1
+ IDLAM(LKNT,3)=-1
+ IF(AXMI.GE.AXMJ+2D0*PMAS(3,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=3
+ IDLAM(LKNT,3)=-3
+ ENDIF
+ ENDIF
+ IF(AXMI.GE.AXMJ+2D0*PMAS(5,1)) THEN
+ IF(ABS(SFMIX(5,1)).GT.ABS(SFMIX(5,2))) THEN
+ XXC(5)=PMAS(PYCOMP(KSUSY1+5),1)
+ ELSE
+ XXC(5)=PMAS(PYCOMP(KSUSY2+5),1)
+ ENDIF
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ LKNT=LKNT+1
+ XLAM(LKNT)=3D0*C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=5
+ IDLAM(LKNT,3)=-5
+ ENDIF
+
+C...U-TYPE QUARKS
+ 140 CONTINUE
+ IA=2
+ JA=1
+ EI=KCHG(IABS(IA),1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ XXC(5)=PMAS(PYCOMP(KSUSY1+JA),1)
+ XXC(6)=1D6
+ CXC(1)=DCMPLX((T3I-XW*EI)/XW/XW1)*ORPP
+ CXC(2)=DCMPLX(0D0,0D0)
+ CXC(3)=DCMPLX((T3I-XW*EI)/XW/XW1)*OLPP
+ CXC(4)=-UMIXC(IJ,1)*DCONJG(UMIXC(IX,1))*DCMPLX(T3I/XW)
+ CXC(5)=-DCMPLX(EI/XW1)*ORPP
+ CXC(6)=DCMPLX(0D0,0D0)
+ CXC(7)=-DCMPLX(EI/XW1)*OLPP
+ CXC(8)=DCMPLX(0D0,0D0)
+ IF( XXC(5).LT.AXMI ) THEN
+ XXC(5)=1D6
+ ENDIF
+ XXC(7)=XXC(5)
+ XXC(8)=XXC(6)
+ IF(AXMI.GE.AXMJ+2D0*PMAS(2,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=3D0*C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=2
+ IDLAM(LKNT,3)=-2
+ IF(AXMI.GE.AXMJ+2D0*PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=4
+ IDLAM(LKNT,3)=-4
+ ENDIF
+ ENDIF
+ 150 CONTINUE
+ ENDIF
+
+C...CHI_2+ -> CHI_1+ + H0_K
+ EH(2)=COS(ALFA)
+ EH(1)=SIN(ALFA)
+ EH(3)=-SBETA
+ DH(2)=-SIN(ALFA)
+ DH(1)=COS(ALFA)
+ DH(3)=COS(BETA)
+ DO 160 IH=1,3
+ XMH=PMAS(ITH(IH),1)
+ XMH2=XMH**2
+C...NO 3-BODY OPTION
+ IF(AXMI.GE.AXMJ+XMH) THEN
+ LKNT=LKNT+1
+ XL=PYLAMF(XMI2,XMJ2,XMH2)
+ OLPP=(VMIXC(2,1)*DCONJG(UMIXC(1,2))*EH(IH) -
+ & VMIXC(2,2)*DCONJG(UMIXC(1,1))*DH(IH))/SR2
+ ORPP=(DCONJG(VMIXC(1,1))*UMIXC(2,2)*EH(IH) -
+ & DCONJG(VMIXC(1,2))*UMIXC(2,1)*DH(IH))/SR2
+ XMK=XMJ*ETAH(IH)
+ GX2=ABS(OLPP)**2+ABS(ORPP)**2
+ GLR=DBLE(OLPP*DCONJG(ORPP))
+ XLAM(LKNT)=PYX2XH(C1,XMI,XMK,XMH,GX2,GLR)
+ IDLAM(LKNT,1)=KFCCHI(1)
+ IDLAM(LKNT,2)=ITH(IH)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 160 CONTINUE
+
+C...CHI1 JUMPS TO HERE
+ 170 CONTINUE
+
+C...CHI+_I -> CHI0_J + W+
+ DO 220 IJ=1,4
+ XMJ=SMZ(IJ)
+ AXMJ=ABS(XMJ)
+ XMJ2=XMJ**2
+ IF(AXMI.GE.AXMJ+XMW) THEN
+ LKNT=LKNT+1
+ DO 180 I=1,4
+ ZMIXC(IJ,I)=DCMPLX(ZMIX(IJ,I),ZMIXI(IJ,I))
+ 180 CONTINUE
+ CXC(1)=(DCONJG(ZMIXC(IJ,2))*VMIXC(IX,1)-
+ & DCONJG(ZMIXC(IJ,4))*VMIXC(IX,2)/SR2)
+ CXC(3)=(ZMIXC(IJ,2)*DCONJG(UMIXC(IX,1))+
+ & ZMIXC(IJ,3)*DCONJG(UMIXC(IX,2))/SR2)
+ GX2=ABS(CXC(1))**2+ABS(CXC(3))**2
+ GLR=DBLE(CXC(1)*DCONJG(CXC(3)))
+ XLAM(LKNT)=PYX2XG(C1/XMW2,XMI,XMJ,XMW,GX2,GLR)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=24
+ IDLAM(LKNT,3)=0
+C...LEPTONS
+ ELSEIF(AXMI.GE.AXMJ) THEN
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ DO 190 I=1,4
+ ZMIXC(IJ,I)=DCMPLX(ZMIX(IJ,I),ZMIXI(IJ,I))
+ 190 CONTINUE
+ CXC(1)=(DCONJG(ZMIXC(IJ,2))*VMIXC(IX,1)-
+ & DCONJG(ZMIXC(IJ,4))*VMIXC(IX,2)/SR2)/SR2
+ CXC(3)=(ZMIXC(IJ,2)*DCONJG(UMIXC(IX,1))+
+ & ZMIXC(IJ,3)*DCONJG(UMIXC(IX,2))/SR2)/SR2
+ CXC(5)=DCMPLX(0D0,0D0)
+ CXC(7)=DCMPLX(0D0,0D0)
+ IA=11
+ JA=12
+ EI=KCHG(IA,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ EJ=KCHG(JA,1)/3D0
+ T3J=SIGN(1D0,EJ+1D-6)/2D0
+ CXC(2)=VMIXC(IX,1)*DCONJG(ZMIXC(IJ,1)*(EJ-T3J)*
+ & TANW+ZMIXC(IJ,2)*T3J)/SR2
+ CXC(4)=-DCONJG(UMIXC(IX,1))*(
+ & ZMIXC(IJ,1)*(EI-T3I)*TANW+ZMIXC(IJ,2)*T3I)/SR2
+ CXC(6)=DCMPLX(0D0,0D0)
+ CXC(8)=DCMPLX(0D0,0D0)
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ XXC(5)=PMAS(PYCOMP(KSUSY1+JA),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+IA),1)
+ XXC(9)=PMAS(24,1)
+ XXC(10)=PMAS(24,2)
+CCC IF( XXC(5).LT.AXMI .AND. XXC(6).LT.AXMI ) GOTO 190
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ELSEIF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+C...1/(2PI)**3*/(32*M**3)*G^4, G^2/(4*PI)= AEM/XW,
+C...--> 1/(16PI)/M**3*(AEM/XW)**2
+ IF(AXMI.GE.AXMJ+PMAS(11,1)+PMAS(12,1)) THEN
+ LKNT=LKNT+1
+ TEMP=PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*TEMP
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=-11
+ IDLAM(LKNT,3)=12
+C...ONLY DECAY CHI+1 -> E+ NU_E
+ IF( IMSS(12).NE. 0 ) GOTO 260
+ IF(AXMI.GE.AXMJ+PMAS(13,1)+PMAS(14,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=-13
+ IDLAM(LKNT,3)=14
+ ENDIF
+ ENDIF
+ IF(AXMI.GE.AXMJ+PMAS(15,1)+PMAS(16,1)) THEN
+ LKNT=LKNT+1
+ IF(ABS(SFMIX(15,1)).GT.ABS(SFMIX(15,2))) THEN
+ XXC(6)=PMAS(PYCOMP(KSUSY1+15),1)
+ ELSE
+ XXC(6)=PMAS(PYCOMP(KSUSY2+15),1)
+ ENDIF
+ XXC(5)=PMAS(PYCOMP(KSUSY1+16),1)
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ELSEIF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+ TEMP=PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ XLAM(LKNT)=C1**2/XMI3/(16D0*PI)*TEMP
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=-15
+ IDLAM(LKNT,3)=16
+ ENDIF
+
+C...NOW, DO THE QUARKS
+ 200 CONTINUE
+ IA=1
+ JA=2
+ EI=KCHG(IA,1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ EJ=KCHG(JA,1)/3D0
+ T3J=SIGN(1D0,EJ+1D-6)/2D0
+ CXC(2)=VMIXC(IX,1)*DCONJG(ZMIXC(IJ,1)*(EJ-T3J)*
+ & TANW+ZMIXC(IJ,2)*T3J)
+ CXC(4)=-DCONJG(UMIXC(IX,1))*(
+ & ZMIXC(IJ,1)*(EI-T3I)*TANW+ZMIXC(IJ,2)*T3I)
+ XXC(5)=PMAS(PYCOMP(KSUSY1+JA),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+IA),1)
+ IF( XXC(5).LT.AXMI .AND. XXC(6).LT.AXMI ) GOTO 210
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ENDIF
+ IF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+ IF(AXMI.GE.AXMJ+PMAS(1,1)+PMAS(2,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=3D0*C1**2/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=-1
+ IDLAM(LKNT,3)=2
+ IF(AXMI.GE.AXMJ+PMAS(3,1)+PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=-3
+ IDLAM(LKNT,3)=4
+ ENDIF
+ ENDIF
+ 210 CONTINUE
+ ENDIF
+ 220 CONTINUE
+
+C...CHI+_I -> CHI0_J + H+
+ DO 230 IJ=1,4
+ XMJ=SMZ(IJ)
+ AXMJ=ABS(XMJ)
+ XMJ2=XMJ**2
+ XMHP=PMAS(ITHC,1)
+ IF(AXMI.GE.AXMJ+XMHP) THEN
+ LKNT=LKNT+1
+ OLPP=CBETA*(ZMIXC(IJ,4)*DCONJG(VMIXC(IX,1))+(ZMIXC(IJ,2)+
+ & ZMIXC(IJ,1)*TANW)*DCONJG(VMIXC(IX,2))/SR2)
+ ORPP=SBETA*(DCONJG(ZMIXC(IJ,3))*UMIXC(IX,1)-
+ & (DCONJG(ZMIXC(IJ,2))+DCONJG(ZMIXC(IJ,1))*TANW)*
+ & UMIXC(IX,2)/SR2)
+ GX2=ABS(OLPP)**2+ABS(ORPP)**2
+ GLR=DBLE(OLPP*DCONJG(ORPP))
+ XLAM(LKNT)=PYX2XH(C1,XMI,XMJ,XMHP,GX2,GLR)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=ITHC
+ IDLAM(LKNT,3)=0
+ ELSE
+
+ ENDIF
+ 230 CONTINUE
+
+C...2-BODY DECAYS TO FERMION SFERMION
+ DO 240 J=1,16
+ IF(J.GE.7.AND.J.LE.10) GOTO 240
+ IF(MOD(J,2).EQ.0) THEN
+ KF1=KSUSY1+J-1
+ ELSE
+ KF1=KSUSY1+J+1
+ ENDIF
+ KF2=KF1+KSUSY1
+ XMSF1=PMAS(PYCOMP(KF1),1)
+ XMSF2=PMAS(PYCOMP(KF2),1)
+ XMF=PMAS(J,1)
+ IF(J.LE.6) THEN
+ FCOL=3D0
+ ELSE
+ FCOL=1D0
+ ENDIF
+
+C...U~ D_L
+ IF(MOD(J,2).EQ.0) THEN
+ XMFP=PMAS(J-1,1)
+ CAL=UMIXC(IX,1)
+ CBL=-XMF*VMIXC(IX,2)/XMW/SBETA/SR2
+ CAR=-XMFP*UMIXC(IX,2)/XMW/CBETA/SR2
+ CBR=0D0
+ ISF=J-1
+ ELSE
+ XMFP=PMAS(J+1,1)
+ CAL=VMIXC(IX,1)
+ CBL=-XMF*UMIXC(IX,2)/XMW/CBETA/SR2
+ CBR=0D0
+ CAR=-XMFP*VMIXC(IX,2)/XMW/SBETA/SR2
+ ISF=J+1
+ ENDIF
+
+C...~U_L D
+ IF(AXMI.GE.XMF+XMSF1) THEN
+ LKNT=LKNT+1
+ XMA2=XMSF1**2
+ XMB2=XMF**2
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+ CA=CAL*SFMIX(ISF,1)+CAR*SFMIX(ISF,2)
+ CB=CBL*SFMIX(ISF,1)+CBR*SFMIX(ISF,2)
+ XLAM(LKNT)=FCOL*C1/8D0/XMI3*SQRT(XL)*( (XMI2+XMB2-XMA2)*
+ & (ABS(CA)**2+ABS(CB)**2)+4D0*DBLE(CA*DCONJG(CB))*XMF*XMI)
+ IDLAM(LKNT,3)=0
+ IF(MOD(J,2).EQ.0) THEN
+ IDLAM(LKNT,1)=-KF1
+ IDLAM(LKNT,2)=J
+ ELSE
+ IDLAM(LKNT,1)=KF1
+ IDLAM(LKNT,2)=-J
+ ENDIF
+ ENDIF
+
+C...U~ D_R
+ IF(AXMI.GE.XMF+XMSF2) THEN
+ LKNT=LKNT+1
+ XMA2=XMSF2**2
+ XMB2=XMF**2
+ CA=CAL*SFMIX(ISF,3)+CAR*SFMIX(ISF,4)
+ CB=CBL*SFMIX(ISF,3)+CBR*SFMIX(ISF,4)
+ XL=PYLAMF(XMI2,XMA2,XMB2)
+ XLAM(LKNT)=FCOL*C1/8D0/XMI3*SQRT(XL)*( (XMI2+XMB2-XMA2)*
+ & (ABS(CA)**2+ABS(CB)**2)+4D0*DBLE(CA*DCONJG(CB))*XMF*XMI)
+ IDLAM(LKNT,3)=0
+ IF(MOD(J,2).EQ.0) THEN
+ IDLAM(LKNT,1)=-KF2
+ IDLAM(LKNT,2)=J
+ ELSE
+ IDLAM(LKNT,1)=KF2
+ IDLAM(LKNT,2)=-J
+ ENDIF
+ ENDIF
+ 240 CONTINUE
+
+C...3-BODY DECAY TO Q Q~' GLUINO, ONLY IF IT CANNOT PROCEED THROUGH
+C...A 2-BODY -- 2-BODY CHAIN
+ XMJ=PMAS(PYCOMP(KSUSY1+21),1)
+ IF(AXMI.GE.XMJ) THEN
+ AXMJ=ABS(XMJ)
+ S12MIN=0D0
+ S12MAX=(AXMI-AXMJ)**2
+ XXC(1)=0D0
+ XXC(2)=XMJ
+ XXC(3)=0D0
+ XXC(4)=XMI
+ XXC(5)=PMAS(PYCOMP(KSUSY1+1),1)
+ XXC(6)=PMAS(PYCOMP(KSUSY1+2),1)
+ XXC(9)=1D6
+ XXC(10)=0D0
+ OLPP=DCMPLX(COS(RMSS(32)),SIN(RMSS(32)))
+ ORPP=DCONJG(OLPP)
+ CXC(1)=DCMPLX(0D0,0D0)
+ CXC(3)=DCMPLX(0D0,0D0)
+ CXC(5)=DCMPLX(0D0,0D0)
+ CXC(7)=DCMPLX(0D0,0D0)
+ CXC(2)=UMIXC(IX,1)*OLPP/SR2
+ CXC(4)=-DCONJG(VMIXC(IX,1))*ORPP/SR2
+ CXC(6)=DCMPLX(0D0,0D0)
+ CXC(8)=DCMPLX(0D0,0D0)
+ IF(XXC(5).LT.AXMI) THEN
+ XXC(5)=1D6
+ ELSEIF(XXC(6).LT.AXMI) THEN
+ XXC(6)=1D6
+ ENDIF
+ XXC(7)=XXC(6)
+ XXC(8)=XXC(5)
+ IF( XXC(5).LT.AXMI .OR. XXC(6).LT.AXMI ) GOTO 250
+ IF(AXMI.GE.AXMJ+PMAS(1,1)+PMAS(2,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=4D0*C1*AS/XMI3/(16D0*PI)*
+ & PYGAUS(PYXXZ6,S12MIN,S12MAX,PREC)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=-1
+ IDLAM(LKNT,3)=2
+ IF(AXMI.GE.AXMJ+PMAS(3,1)+PMAS(4,1)) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=XLAM(LKNT-1)
+ IDLAM(LKNT,1)=KSUSY1+21
+ IDLAM(LKNT,2)=-3
+ IDLAM(LKNT,3)=4
+ ENDIF
+ ENDIF
+ 250 CONTINUE
+ ENDIF
+
+C...R-violating decay modes (SKANDS).
+ CALL PYRVCH(KFIN,XLAM,IDLAM,LKNT)
+
+ 260 IKNT=LKNT
+ XLAM(0)=0D0
+ DO 270 I=1,IKNT
+ XLAM(0)=XLAM(0)+XLAM(I)
+ IF(XLAM(I).LT.0D0) THEN
+ WRITE(MSTU(11),*) ' XLAM(I) = ',XLAM(I),KCIN,
+ & (IDLAM(I,J),J=1,3)
+ XLAM(I)=0D0
+ ENDIF
+ 270 CONTINUE
+ IF(XLAM(0).EQ.0D0) THEN
+ XLAM(0)=1D-6
+ WRITE(MSTU(11),*) ' XLAM(0) = ',XLAM(0)
+ WRITE(MSTU(11),*) LKNT
+ WRITE(MSTU(11),*) (XLAM(J),J=1,LKNT)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYXXZ6
+C...Used in the calculation of inoi -> inoj + f + ~f.
+
+ FUNCTION PYXXZ6(X)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+C COMMON/PYINTS/XXM(20)
+ COMPLEX*16 CXC
+ COMMON/PYINTC/XXC(10),CXC(8)
+ SAVE /PYDAT1/,/PYINTC/
+
+C...Local variables.
+ COMPLEX*16 QLLS,QRRS,QRLS,QLRS,QLLU,QRRU,QLRT,QRLT
+ DOUBLE PRECISION PYXXZ6,X
+ DOUBLE PRECISION XM12,XM22,XM32,S,S13,WPROP2
+ DOUBLE PRECISION WW,WF1,WF2,WFL1,WFL2
+ DOUBLE PRECISION SIJ
+ DOUBLE PRECISION XMV,XMG,XMSU1,XMSU2,XMSD1,XMSD2
+ DOUBLE PRECISION OL2
+ DOUBLE PRECISION S23MIN,S23MAX,S23AVE,S23DEL
+ INTEGER I
+
+C...Statement functions.
+C...Integral from x to y of (t-a)(b-t) dt.
+ TINT(X,Y,A,B)=(X-Y)*(-(X**2+X*Y+Y**2)/3D0+(B+A)*(X+Y)/2D0-A*B)
+C...Integral from x to y of (t-a)(b-t)/(t-c) dt.
+ TINT2(X,Y,A,B,C)=(X-Y)*(-0.5D0*(X+Y)+(B+A-C))-
+ &LOG(ABS((X-C)/(Y-C)))*(C-B)*(C-A)
+C...Integral from x to y of (t-a)(b-t)/(t-c)**2 dt.
+ TINT3(X,Y,A,B,C)=-(X-Y)+(C-A)*(C-B)*(Y-X)/(X-C)/(Y-C)+
+ &(B+A-2D0*C)*LOG(ABS((X-C)/(Y-C)))
+C...Integral from x to y of (t-a)/(b-t) dt.
+ UTINT(X,Y,A,B)=LOG(ABS((X-A)/(B-X)*(B-Y)/(Y-A)))/(B-A)
+C...Integral from x to y of 1/(t-a) dt.
+ TPROP(X,Y,A)=LOG(ABS((X-A)/(Y-A)))
+
+ XM12=XXC(1)**2
+ XM22=XXC(2)**2
+ XM32=XXC(3)**2
+ S=XXC(4)**2
+ S13=X
+
+ S23AVE=XM22+XM32-0.5D0/X*(X+XM32-XM12)*(X+XM22-S)
+ S23DEL=0.5D0/X*SQRT( ( (X-XM12-XM32)**2-4D0*XM12*XM32)*
+ &( (X-XM22-S)**2 -4D0*XM22*S ) )
+
+ S23MIN=(S23AVE-S23DEL)
+ S23MAX=(S23AVE+S23DEL)
+
+ XMSD1=XXC(5)**2
+ XMSD2=XXC(7)**2
+ XMSU1=XXC(6)**2
+ XMSU2=XXC(8)**2
+
+ XMV=XXC(9)
+ XMG=XXC(10)
+ QLLS=CXC(1)
+ QLLU=CXC(2)
+ QLRS=CXC(3)
+ QLRT=CXC(4)
+ QRLS=CXC(5)
+ QRLT=CXC(6)
+ QRRS=CXC(7)
+ QRRU=CXC(8)
+ WPROP2=(S13-XMV**2)**2+(XMV*XMG)**2
+ SIJ=2D0*XXC(2)*XXC(4)*S13
+ IF(XMV.LE.1000D0) THEN
+ OL2=ABS(QLLS)**2+ABS(QRRS)**2+ABS(QLRS)**2+ABS(QRLS)**2
+ OLR=-2D0*DBLE(QLRS*DCONJG(QLLS)+QRLS*DCONJG(QRRS))
+ WW=(OL2*2D0*TINT(S23MAX,S23MIN,XM22,S)
+ & +OLR*SIJ*(S23MAX-S23MIN))/WPROP2
+ IF(XXC(5).LE.10000D0) THEN
+ WFL1=4D0*(DBLE(QLLS*DCONJG(QLLU))*
+ & TINT2(S23MAX,S23MIN,XM22,S,XMSD1)-
+ & .5D0*DBLE(QLLS*DCONJG(QLRT))*SIJ*TPROP(S23MAX,S23MIN,XMSD2)+
+ & DBLE(QLRS*DCONJG(QLRT))*TINT2(S23MAX,S23MIN,XM22,S,XMSD2)-
+ & .5D0*DBLE(QLRS*DCONJG(QLLU))*SIJ*TPROP(S23MAX,S23MIN,XMSD1))
+ & *(S13-XMV**2)/WPROP2
+ ELSE
+ WFL1=0D0
+ ENDIF
+
+ IF(XXC(6).LE.10000D0) THEN
+ WFL2=4D0*(DBLE(QRRS*DCONJG(QRRU))*
+ & TINT2(S23MAX,S23MIN,XM22,S,XMSU1)-
+ & .5D0*DBLE(QRRS*DCONJG(QRLT))*SIJ*TPROP(S23MAX,S23MIN,XMSU2)+
+ & DBLE(QRLS*DCONJG(QRLT))*TINT2(S23MAX,S23MIN,XM22,S,XMSU2)-
+ & .5D0*DBLE(QRLS*DCONJG(QRRU))*SIJ*TPROP(S23MAX,S23MIN,XMSU1))
+ & *(S13-XMV**2)/WPROP2
+ ELSE
+ WFL2=0D0
+ ENDIF
+ ELSE
+ WW=0D0
+ WFL1=0D0
+ WFL2=0D0
+ ENDIF
+ IF(XXC(5).LE.10000D0) THEN
+ WF1=2D0*ABS(QLLU)**2*TINT3(S23MAX,S23MIN,XM22,S,XMSD1)
+ & +2D0*ABS(QLRT)**2*TINT3(S23MAX,S23MIN,XM22,S,XMSD2)
+ & - 2D0*DBLE(QLRT*DCONJG(QLLU))*
+ & SIJ*UTINT(S23MAX,S23MIN,XMSD1,XM22+S-S13-XMSD2)
+ ELSE
+ WF1=0D0
+ ENDIF
+ IF(XXC(6).LE.10000D0) THEN
+ WF2=2D0*ABS(QRRU)**2*TINT3(S23MAX,S23MIN,XM22,S,XMSU1)
+ & +2D0*ABS(QRLT)**2*TINT3(S23MAX,S23MIN,XM22,S,XMSU2)
+ & - 2D0*DBLE(QRLT*DCONJG(QRRU))*
+ & SIJ*UTINT(S23MAX,S23MIN,XMSU1,XM22+S-S13-XMSU2)
+ ELSE
+ WF2=0D0
+ ENDIF
+
+ PYXXZ6=(WW+WF1+WF2+WFL1+WFL2)
+
+ IF(PYXXZ6.LT.0D0) THEN
+ WRITE(MSTU(11),*) ' NEGATIVE WT IN PYXXZ6 '
+ WRITE(MSTU(11),*) (XXC(I),I=1,5)
+ WRITE(MSTU(11),*) (XXC(I),I=6,10)
+ WRITE(MSTU(11),*) WW,WF1,WF2,WFL1,WFL2
+ WRITE(MSTU(11),*) S23MIN,S23MAX
+ PYXXZ6=0D0
+ ENDIF
+
+ RETURN
+ END
+
+
+C*********************************************************************
+
+C...PYXXGA
+C...Calculates chi0_i -> chi0_j + gamma.
+
+ FUNCTION PYXXGA(C0,XM1,XM2,XMTR,XMTL)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local variables.
+ DOUBLE PRECISION PYXXGA,C0,XM1,XM2,XMTR,XMTL
+ DOUBLE PRECISION F1,F2
+
+ F1=(1D0+XMTR/(1D0-XMTR)*LOG(XMTR))/(1D0-XMTR)
+ F2=(1D0+XMTL/(1D0-XMTL)*LOG(XMTL))/(1D0-XMTL)
+ PYXXGA=C0*((XM1**2-XM2**2)/XM1)**3
+ PYXXGA=PYXXGA*(2D0/3D0*(F1+F2)-13D0/12D0)**2
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYX2XG
+C...Calculates the decay rate for ino -> ino + gauge boson.
+
+ FUNCTION PYX2XG(C1,XM1,XM2,XM3,GX2,GLR)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local variables.
+ DOUBLE PRECISION PYX2XG,XM1,XM2,XM3,GX2,GLR
+ DOUBLE PRECISION XL,PYLAMF,C1
+ DOUBLE PRECISION XMI2,XMJ2,XMV2,XMI3
+
+ XMI2=XM1**2
+ XMI3=ABS(XM1**3)
+ XMJ2=XM2**2
+ XMV2=XM3**2
+ XL=PYLAMF(XMI2,XMJ2,XMV2)
+ PYX2XG=C1/8D0/XMI3*SQRT(XL)
+ &*(GX2*(XL+3D0*XMV2*(XMI2+XMJ2-XMV2))-
+ &12D0*GLR*XM1*XM2*XMV2)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYX2XH
+C...Calculates the decay rate for ino -> ino + H.
+
+ FUNCTION PYX2XH(C1,XM1,XM2,XM3,GX2,GLR)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local variables.
+ DOUBLE PRECISION PYX2XH,XM1,XM2,XM3
+ DOUBLE PRECISION XL,PYLAMF,C1
+ DOUBLE PRECISION XMI2,XMJ2,XMV2,XMI3
+
+ XMI2=XM1**2
+ XMI3=ABS(XM1**3)
+ XMJ2=XM2**2
+ XMV2=XM3**2
+ XL=PYLAMF(XMI2,XMJ2,XMV2)
+ PYX2XH=C1/8D0/XMI3*SQRT(XL)
+ &*(GX2*(XMI2+XMJ2-XMV2)+
+ &4D0*GLR*XM1*XM2)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYHEXT
+C...Calculates the non-standard decay modes of the Higgs boson.
+C...
+C...Author: Stephen Mrenna
+C...Last Update: April 2001
+C......Allow complex values for Z,U, and V
+
+ SUBROUTINE PYHEXT(KFIN,XLAM,IDLAM,IKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYMSSM/,/PYSSMT/
+
+C...Local variables.
+ COMPLEX*16 ZMIXC(4,4),VMIXC(2,2),UMIXC(2,2),OLPP,ORPP
+ COMPLEX*16 QIJ,RIJ,F21K,F12K
+ INTEGER KFIN
+ DOUBLE PRECISION XMI,XMJ,XMF,XMW,XMW2,XMZ,AXMJ,AXMI
+ DOUBLE PRECISION XMI2,XMI3,XMJ2
+ DOUBLE PRECISION PYLAMF,XL,CF,EI
+ INTEGER IDU,IFL
+ DOUBLE PRECISION TANW,XW,AEM,C1,AS
+ DOUBLE PRECISION PYH2XX,GHLL,GHRR,GHLR
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3)
+ INTEGER LKNT,IH,J,IJ,I,IKNT,IK
+ INTEGER ITH(4)
+ INTEGER KFNCHI(4),KFCCHI(2)
+ DOUBLE PRECISION ETAH(3),CH(3),DH(3),EH(3)
+ DOUBLE PRECISION SR2
+ DOUBLE PRECISION BETA,ALFA
+ DOUBLE PRECISION CBETA,SBETA,GR,GL,TANB
+ DOUBLE PRECISION PYALEM
+ DOUBLE PRECISION AL,AR,ALR
+ DOUBLE PRECISION XMK,AXMK,COSA,SINA,CW,XML
+ DOUBLE PRECISION XMUZ,ATRIT,ATRIB,ATRIL
+ DOUBLE PRECISION XMJL,XMJR,XM1,XM2
+ DATA ITH/25,35,36,37/
+ DATA ETAH/1D0,1D0,-1D0/
+ DATA SR2/1.4142136D0/
+ DATA KFNCHI/1000022,1000023,1000025,1000035/
+ DATA KFCCHI/1000024,1000037/
+
+C...COUNT THE NUMBER OF DECAY MODES
+ LKNT=IKNT
+
+ XMW=PMAS(24,1)
+ XMW2=XMW**2
+ XMZ=PMAS(23,1)
+ XW=PARU(102)
+ TANW = SQRT(XW/(1D0-XW))
+ CW=SQRT(1D0-XW)
+
+C...1 - 4 DEPENDING ON Higgs species.
+ IH=1
+ IF(KFIN.EQ.ITH(2)) IH=2
+ IF(KFIN.EQ.ITH(3)) IH=3
+ IF(KFIN.EQ.ITH(4)) IH=4
+
+ XMI=PMAS(KFIN,1)
+ XMI2=XMI**2
+ AXMI=ABS(XMI)
+ AEM=PYALEM(XMI2)
+ C1=AEM/XW
+ XMI3=ABS(XMI**3)
+
+ TANB=RMSS(5)
+ BETA=ATAN(TANB)
+ CBETA=COS(BETA)
+ SBETA=TANB*CBETA
+ ALFA=RMSS(18)
+ COSA=COS(ALFA)
+ SINA=SIN(ALFA)
+ ATRIT=RMSS(16)
+ ATRIB=RMSS(15)
+ ATRIL=RMSS(17)
+ XMUZ=-RMSS(4)
+
+ DO 110 I=1,4
+ DO 100 J=1,4
+ ZMIXC(J,I)=DCMPLX(ZMIX(J,I),ZMIXI(J,I))
+ 100 CONTINUE
+ 110 CONTINUE
+ DO 130 I=1,2
+ DO 120 J=1,2
+ VMIXC(J,I)=DCMPLX(VMIX(J,I),VMIXI(J,I))
+ UMIXC(J,I)=DCMPLX(UMIX(J,I),UMIXI(J,I))
+ 120 CONTINUE
+ 130 CONTINUE
+
+
+ IF(IH.EQ.4) GOTO 220
+
+C...CHECK ALL 2-BODY DECAYS TO GAUGE AND HIGGS BOSONS
+C...H0_K -> CHI0_I + CHI0_J
+ EH(2)=SINA
+ EH(1)=COSA
+ EH(3)=CBETA
+ DH(2)=COSA
+ DH(1)=-SINA
+ DH(3)=SBETA
+ DO 150 IJ=1,4
+ XMJ=SMZ(IJ)
+ AXMJ=ABS(XMJ)
+ DO 140 IK=1,IJ
+ XMK=SMZ(IK)
+ AXMK=ABS(XMK)
+ IF(AXMI.GE.AXMJ+AXMK) THEN
+ LKNT=LKNT+1
+ QIJ=ZMIXC(IK,3)*ZMIXC(IJ,2)+
+ & ZMIXC(IJ,3)*ZMIXC(IK,2)-
+ & TANW*(ZMIXC(IK,3)*ZMIXC(IJ,1)+
+ & ZMIXC(IJ,3)*ZMIXC(IK,1))
+ RIJ=ZMIXC(IK,4)*ZMIXC(IJ,2)+
+ & ZMIXC(IJ,4)*ZMIXC(IK,2)-
+ & TANW*(ZMIXC(IK,4)*ZMIXC(IJ,1)+
+ & ZMIXC(IJ,4)*ZMIXC(IK,1))
+ F21K=0.5D0*DCONJG(QIJ*DH(IH)-RIJ*EH(IH))
+ F12K=0.5D0*(QIJ*DH(IH)-RIJ*EH(IH))
+C...SIGN OF MASSES I,J
+ XML=XMK*ETAH(IH)
+ GX2=ABS(F12K)**2+ABS(F21K)**2
+ GLR=DBLE(F12K*DCONJG(F21K))
+ XLAM(LKNT)=PYH2XX(C1,XMI,XMJ,XML,GX2,GLR)
+ IF(IJ.EQ.IK) XLAM(LKNT)=XLAM(LKNT)*0.5D0
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=KFNCHI(IK)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 140 CONTINUE
+ 150 CONTINUE
+
+C...H0_K -> CHI+_I CHI-_J
+ DO 170 IJ=1,2
+ XMJ=SMW(IJ)
+ AXMJ=ABS(XMJ)
+ DO 160 IK=1,2
+ XMK=SMW(IK)
+ AXMK=ABS(XMK)
+ IF(AXMI.GE.AXMJ+AXMK) THEN
+ LKNT=LKNT+1
+ OLPP=DCONJG(VMIXC(IJ,1)*UMIXC(IK,2)*DH(IH) +
+ & VMIXC(IJ,2)*UMIXC(IK,1)*EH(IH))/SR2
+ ORPP=(VMIXC(IK,1)*UMIXC(IJ,2)*DH(IH) +
+ & VMIXC(IK,2)*UMIXC(IJ,1)*EH(IH))/SR2
+ GX2=ABS(OLPP)**2+ABS(ORPP)**2
+ GLR=DBLE(OLPP*DCONJG(ORPP))
+ XML=XMK*ETAH(IH)
+ XLAM(LKNT)=PYH2XX(C1,XMI,XMJ,XML,GX2,GLR)
+ IDLAM(LKNT,1)=KFCCHI(IJ)
+ IDLAM(LKNT,2)=-KFCCHI(IK)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...HIGGS TO SFERMION SFERMION
+ DO 200 IFL=1,16
+ IF(IFL.GE.7.AND.IFL.LE.10) GOTO 200
+ IJ=KSUSY1+IFL
+ XMJL=PMAS(PYCOMP(IJ),1)
+ XMJR=PMAS(PYCOMP(IJ+KSUSY1),1)
+ IF(AXMI.GE.2D0*MIN(XMJL,XMJR)) THEN
+ XMJ=XMJL
+ XMJ2=XMJ**2
+ XL=PYLAMF(XMI2,XMJ2,XMJ2)
+ XMF=PMAS(IFL,1)
+ EI=KCHG(IFL,1)/3D0
+ IDU=2-MOD(IFL,2)
+
+ IF(IH.EQ.1) THEN
+ IF(IDU.EQ.1) THEN
+ GHLL=-XMZ/CW*(0.5D0+EI*XW)*SIN(ALFA+BETA)+
+ & XMF**2/XMW*SINA/CBETA
+ GHRR=XMZ/CW*(EI*XW)*SIN(ALFA+BETA)+
+ & XMF**2/XMW*SINA/CBETA
+ IF(IFL.EQ.5) THEN
+ GHLR=-XMF/2D0/XMW/CBETA*(XMUZ*COSA-
+ & ATRIB*SINA)
+ ELSEIF(IFL.EQ.15) THEN
+ GHLR=-XMF/2D0/XMW/CBETA*(XMUZ*COSA-
+ & ATRIL*SINA)
+ ELSE
+ GHLR=0D0
+ ENDIF
+ ELSE
+ GHLL=XMZ/CW*(0.5D0-EI*XW)*SIN(ALFA+BETA)-
+ & XMF**2/XMW*COSA/SBETA
+ GHRR=XMZ/CW*(EI*XW)*SIN(ALFA+BETA)-
+ & XMF**2/XMW*COSA/SBETA
+ IF(IFL.EQ.6) THEN
+ GHLR=XMF/2D0/XMW/SBETA*(XMUZ*SINA-
+ & ATRIT*COSA)
+ ELSE
+ GHLR=0D0
+ ENDIF
+ ENDIF
+
+ ELSEIF(IH.EQ.2) THEN
+ IF(IDU.EQ.1) THEN
+ GHLL=XMZ/CW*(0.5D0+EI*XW)*COS(ALFA+BETA)-
+ & XMF**2/XMW*COSA/CBETA
+ GHRR=-XMZ/CW*(EI*XW)*COS(ALFA+BETA)-
+ & XMF**2/XMW*COSA/CBETA
+ IF(IFL.EQ.5) THEN
+ GHLR=-XMF/2D0/XMW/CBETA*(XMUZ*SINA+
+ & ATRIB*COSA)
+ ELSEIF(IFL.EQ.15) THEN
+ GHLR=-XMF/2D0/XMW/CBETA*(XMUZ*SINA+
+ & ATRIL*COSA)
+ ELSE
+ GHLR=0D0
+ ENDIF
+ ELSE
+ GHLL=-XMZ/CW*(0.5D0-EI*XW)*COS(ALFA+BETA)-
+ & XMF**2/XMW*SINA/SBETA
+ GHRR=-XMZ/CW*(EI*XW)*COS(ALFA+BETA)-
+ & XMF**2/XMW*SINA/SBETA
+ IF(IFL.EQ.6) THEN
+ GHLR=-XMF/2D0/XMW/SBETA*(XMUZ*COSA+
+ & ATRIT*SINA)
+ ELSE
+ GHLR=0D0
+ ENDIF
+ ENDIF
+
+ ELSEIF(IH.EQ.3) THEN
+ GHLL=0D0
+ GHRR=0D0
+ GHLR=0D0
+ IF(IDU.EQ.1) THEN
+ IF(IFL.EQ.5) THEN
+ GHLR=XMF/2D0/XMW*(ATRIB*TANB-XMUZ)
+ ELSEIF(IFL.EQ.15) THEN
+ GHLR=XMF/2D0/XMW*(ATRIL*TANB-XMUZ)
+ ENDIF
+ ELSE
+ IF(IFL.EQ.6) THEN
+ GHLR=XMF/2D0/XMW*(ATRIT/TANB-XMUZ)
+ ENDIF
+ ENDIF
+ ENDIF
+ IF(IH.EQ.3) GOTO 180
+
+ AL=SFMIX(IFL,1)**2
+ AR=SFMIX(IFL,2)**2
+ ALR=SFMIX(IFL,1)*SFMIX(IFL,2)
+ IF(IFL.LE.6) THEN
+ CF=3D0
+ ELSE
+ CF=1D0
+ ENDIF
+
+ IF(AXMI.GE.2D0*XMJ) THEN
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*
+ & (GHLL*AL+GHRR*AR
+ & +2D0*GHLR*ALR)**2
+ IDLAM(LKNT,1)=IJ
+ IDLAM(LKNT,2)=-IJ
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+ IF(AXMI.GE.2D0*XMJR) THEN
+ LKNT=LKNT+1
+ AL=SFMIX(IFL,3)**2
+ AR=SFMIX(IFL,4)**2
+ ALR=SFMIX(IFL,3)*SFMIX(IFL,4)
+ XMJ=XMJR
+ XMJ2=XMJ**2
+ XL=PYLAMF(XMI2,XMJ2,XMJ2)
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*
+ & (GHLL*AL+GHRR*AR
+ & +2D0*GHLR*ALR)**2
+ IDLAM(LKNT,1)=IJ+KSUSY1
+ IDLAM(LKNT,2)=-(IJ+KSUSY1)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 180 CONTINUE
+
+ IF(AXMI.GE.XMJL+XMJR) THEN
+ LKNT=LKNT+1
+ AL=SFMIX(IFL,1)*SFMIX(IFL,3)
+ AR=SFMIX(IFL,2)*SFMIX(IFL,4)
+ ALR=SFMIX(IFL,1)*SFMIX(IFL,4)+SFMIX(IFL,2)*SFMIX(IFL,3)
+ XMJ=XMJR
+ XMJ2=XMJ**2
+ XL=PYLAMF(XMI2,XMJ2,XMJL**2)
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*
+ & (GHLL*AL+GHRR*AR)**2
+ IDLAM(LKNT,1)=IJ
+ IDLAM(LKNT,2)=-(IJ+KSUSY1)
+ IDLAM(LKNT,3)=0
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=-IJ
+ IDLAM(LKNT,2)=IJ+KSUSY1
+ IDLAM(LKNT,3)=0
+ XLAM(LKNT)=XLAM(LKNT-1)
+ ENDIF
+ ENDIF
+ 190 CONTINUE
+ 200 CONTINUE
+ 210 CONTINUE
+
+ GOTO 270
+ 220 CONTINUE
+
+C...H+ -> CHI+_I + CHI0_J
+ DO 240 IJ=1,4
+ XMJ=SMZ(IJ)
+ AXMJ=ABS(XMJ)
+ XMJ2=XMJ**2
+ DO 230 IK=1,2
+ XMK=SMW(IK)
+ AXMK=ABS(XMK)
+ IF(AXMI.GE.AXMJ+AXMK) THEN
+ LKNT=LKNT+1
+ OLPP=CBETA*DCONJG(ZMIXC(IJ,4)*VMIXC(IK,1)+(ZMIXC(IJ,2)+
+ & ZMIXC(IJ,1)*TANW)*VMIXC(IK,2)/SR2)
+ ORPP=SBETA*(ZMIXC(IJ,3)*UMIXC(IK,1)-
+ & (ZMIXC(IJ,2)+ZMIXC(IJ,1)*TANW)*UMIXC(IK,2)/SR2)
+ GX2=ABS(OLPP)**2+ABS(ORPP)**2
+ GLR=DBLE(OLPP*DCONJG(ORPP))
+ XLAM(LKNT)=PYH2XX(C1,XMI,XMJ,-XMK,GX2,GLR)
+ IDLAM(LKNT,1)=KFNCHI(IJ)
+ IDLAM(LKNT,2)=KFCCHI(IK)
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 230 CONTINUE
+ 240 CONTINUE
+
+ GL=-XMW/SR2*(SIN(2D0*BETA)-PMAS(6,1)**2/TANB/XMW2)
+ GR=-PMAS(6,1)/SR2/XMW*(XMUZ-ATRIT/TANB)
+ AL=0D0
+ AR=0D0
+ CF=3D0
+
+C...H+ -> T_1 B_1~
+ XM1=PMAS(PYCOMP(KSUSY1+6),1)
+ XM2=PMAS(PYCOMP(KSUSY1+5),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*
+ & (GL*SFMIX(6,1)*SFMIX(5,1)+GR*SFMIX(6,2)*SFMIX(5,1))**2
+ IDLAM(LKNT,1)=KSUSY1+6
+ IDLAM(LKNT,2)=-(KSUSY1+5)
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+C...H+ -> T_2 B_1~
+ XM1=PMAS(PYCOMP(KSUSY2+6),1)
+ XM2=PMAS(PYCOMP(KSUSY1+5),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*
+ & (GL*SFMIX(6,3)*SFMIX(5,1)+GR*SFMIX(6,4)*SFMIX(5,1))**2
+ IDLAM(LKNT,1)=KSUSY2+6
+ IDLAM(LKNT,2)=-(KSUSY1+5)
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+C...H+ -> T_1 B_2~
+ XM1=PMAS(PYCOMP(KSUSY1+6),1)
+ XM2=PMAS(PYCOMP(KSUSY2+5),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*
+ & (GL*SFMIX(6,1)*SFMIX(5,3)+GR*SFMIX(6,2)*SFMIX(5,3))**2
+ IDLAM(LKNT,1)=KSUSY1+6
+ IDLAM(LKNT,2)=-(KSUSY2+5)
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+C...H+ -> T_2 B_2~
+ XM1=PMAS(PYCOMP(KSUSY2+6),1)
+ XM2=PMAS(PYCOMP(KSUSY2+5),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*
+ & (GL*SFMIX(6,3)*SFMIX(5,3)+GR*SFMIX(6,4)*SFMIX(5,3))**2
+ IDLAM(LKNT,1)=KSUSY2+6
+ IDLAM(LKNT,2)=-(KSUSY2+5)
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+C...H+ -> UL DL~
+ GL=-XMW/SR2*SIN(2D0*BETA)
+ DO 250 IJ=1,3,2
+ XM1=PMAS(PYCOMP(KSUSY1+IJ),1)
+ XM2=PMAS(PYCOMP(KSUSY1+IJ+1),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*GL**2
+ IDLAM(LKNT,1)=-(KSUSY1+IJ)
+ IDLAM(LKNT,2)=KSUSY1+IJ+1
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 250 CONTINUE
+
+C...H+ -> EL~ NUL
+ CF=1D0
+ DO 260 IJ=11,13,2
+ XM1=PMAS(PYCOMP(KSUSY1+IJ),1)
+ XM2=PMAS(PYCOMP(KSUSY1+IJ+1),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*GL**2
+ IDLAM(LKNT,1)=-(KSUSY1+IJ)
+ IDLAM(LKNT,2)=KSUSY1+IJ+1
+ IDLAM(LKNT,3)=0
+ ENDIF
+ 260 CONTINUE
+
+C...H+ -> TAU1 NUTAUL
+ XM1=PMAS(PYCOMP(KSUSY1+15),1)
+ XM2=PMAS(PYCOMP(KSUSY1+16),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*GL**2*SFMIX(15,1)**2
+ IDLAM(LKNT,1)=-(KSUSY1+15)
+ IDLAM(LKNT,2)= KSUSY1+16
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+C...H+ -> TAU2 NUTAUL
+ XM1=PMAS(PYCOMP(KSUSY2+15),1)
+ XM2=PMAS(PYCOMP(KSUSY1+16),1)
+ IF(XMI.GE.XM1+XM2) THEN
+ XL=PYLAMF(XMI2,XM1**2,XM2**2)
+ LKNT=LKNT+1
+ XLAM(LKNT)=CF*SQRT(XL)/4D0*C1/XMI3*GL**2*SFMIX(15,3)**2
+ IDLAM(LKNT,1)=-(KSUSY2+15)
+ IDLAM(LKNT,2)= KSUSY1+16
+ IDLAM(LKNT,3)=0
+ ENDIF
+
+ 270 CONTINUE
+ IKNT=LKNT
+ XLAM(0)=0D0
+ DO 280 I=1,IKNT
+ IF(XLAM(I).LE.0D0) XLAM(I)=0D0
+ XLAM(0)=XLAM(0)+XLAM(I)
+ 280 CONTINUE
+ IF(XLAM(0).EQ.0D0) XLAM(0)=1D-6
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYH2XX
+C...Calculates the decay rate for a Higgs to an ino pair.
+
+ FUNCTION PYH2XX(C1,XM1,XM2,XM3,GX2,GLR)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Local variables.
+ DOUBLE PRECISION PYH2XX,XM1,XM2,XM3,GL,GR
+ DOUBLE PRECISION XL,PYLAMF,C1
+ DOUBLE PRECISION XMI2,XMJ2,XMK2,XMI3
+
+ XMI2=XM1**2
+ XMI3=ABS(XM1**3)
+ XMJ2=XM2**2
+ XMK2=XM3**2
+ XL=PYLAMF(XMI2,XMJ2,XMK2)
+ PYH2XX=C1/4D0/XMI3*SQRT(XL)
+ &*(GX2*(XMI2-XMJ2-XMK2)-
+ &4D0*GLR*XM3*XM2)
+ IF(PYH2XX.LT.0D0) PYH2XX=0D0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGAUS
+C...Integration by adaptive Gaussian quadrature.
+C...Adapted from the CERNLIB DGAUSS routine by K.S. Kolbig.
+
+ FUNCTION PYGAUS(F, A, B, EPS)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local declarations.
+ EXTERNAL F
+ DOUBLE PRECISION F,W(12), X(12)
+ DATA X( 1) /9.6028985649753623D-1/, W( 1) /1.0122853629037626D-1/
+ DATA X( 2) /7.9666647741362674D-1/, W( 2) /2.2238103445337447D-1/
+ DATA X( 3) /5.2553240991632899D-1/, W( 3) /3.1370664587788729D-1/
+ DATA X( 4) /1.8343464249564980D-1/, W( 4) /3.6268378337836198D-1/
+ DATA X( 5) /9.8940093499164993D-1/, W( 5) /2.7152459411754095D-2/
+ DATA X( 6) /9.4457502307323258D-1/, W( 6) /6.2253523938647893D-2/
+ DATA X( 7) /8.6563120238783174D-1/, W( 7) /9.5158511682492785D-2/
+ DATA X( 8) /7.5540440835500303D-1/, W( 8) /1.2462897125553387D-1/
+ DATA X( 9) /6.1787624440264375D-1/, W( 9) /1.4959598881657673D-1/
+ DATA X(10) /4.5801677765722739D-1/, W(10) /1.6915651939500254D-1/
+ DATA X(11) /2.8160355077925891D-1/, W(11) /1.8260341504492359D-1/
+ DATA X(12) /9.5012509837637440D-2/, W(12) /1.8945061045506850D-1/
+
+C...The Gaussian quadrature algorithm.
+ H = 0D0
+ IF(B .EQ. A) GOTO 140
+ CONST = 5D-3 / ABS(B-A)
+ BB = A
+ 100 CONTINUE
+ AA = BB
+ BB = B
+ 110 CONTINUE
+ C1 = 0.5D0*(BB+AA)
+ C2 = 0.5D0*(BB-AA)
+ S8 = 0D0
+ DO 120 I = 1, 4
+ U = C2*X(I)
+ S8 = S8 + W(I) * (F(C1+U) + F(C1-U))
+ 120 CONTINUE
+ S16 = 0D0
+ DO 130 I = 5, 12
+ U = C2*X(I)
+ S16 = S16 + W(I) * (F(C1+U) + F(C1-U))
+ 130 CONTINUE
+ S16 = C2*S16
+ IF(DABS(S16-C2*S8) .LE. EPS*(1D0+DABS(S16))) THEN
+ H = H + S16
+ IF(BB .NE. B) GOTO 100
+ ELSE
+ BB = C1
+ IF(1D0 + CONST*ABS(C2) .NE. 1D0) GOTO 110
+ H = 0D0
+ CALL PYERRM(18,'(PYGAUS:) too high accuracy required')
+ GOTO 140
+ ENDIF
+ 140 CONTINUE
+ PYGAUS = H
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGAU2
+C...Integration by adaptive Gaussian quadrature.
+C...Adapted from the CERNLIB DGAUSS routine by K.S. Kolbig.
+C...Carbon copy of PYGAUS, but avoids having to use it recursively.
+
+ FUNCTION PYGAU2(F, A, B, EPS)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local declarations.
+ EXTERNAL F
+ DOUBLE PRECISION F,W(12), X(12)
+ DATA X( 1) /9.6028985649753623D-1/, W( 1) /1.0122853629037626D-1/
+ DATA X( 2) /7.9666647741362674D-1/, W( 2) /2.2238103445337447D-1/
+ DATA X( 3) /5.2553240991632899D-1/, W( 3) /3.1370664587788729D-1/
+ DATA X( 4) /1.8343464249564980D-1/, W( 4) /3.6268378337836198D-1/
+ DATA X( 5) /9.8940093499164993D-1/, W( 5) /2.7152459411754095D-2/
+ DATA X( 6) /9.4457502307323258D-1/, W( 6) /6.2253523938647893D-2/
+ DATA X( 7) /8.6563120238783174D-1/, W( 7) /9.5158511682492785D-2/
+ DATA X( 8) /7.5540440835500303D-1/, W( 8) /1.2462897125553387D-1/
+ DATA X( 9) /6.1787624440264375D-1/, W( 9) /1.4959598881657673D-1/
+ DATA X(10) /4.5801677765722739D-1/, W(10) /1.6915651939500254D-1/
+ DATA X(11) /2.8160355077925891D-1/, W(11) /1.8260341504492359D-1/
+ DATA X(12) /9.5012509837637440D-2/, W(12) /1.8945061045506850D-1/
+
+C...The Gaussian quadrature algorithm.
+ H = 0D0
+ IF(B .EQ. A) GOTO 140
+ CONST = 5D-3 / ABS(B-A)
+ BB = A
+ 100 CONTINUE
+ AA = BB
+ BB = B
+ 110 CONTINUE
+ C1 = 0.5D0*(BB+AA)
+ C2 = 0.5D0*(BB-AA)
+ S8 = 0D0
+ DO 120 I = 1, 4
+ U = C2*X(I)
+ S8 = S8 + W(I) * (F(C1+U) + F(C1-U))
+ 120 CONTINUE
+ S16 = 0D0
+ DO 130 I = 5, 12
+ U = C2*X(I)
+ S16 = S16 + W(I) * (F(C1+U) + F(C1-U))
+ 130 CONTINUE
+ S16 = C2*S16
+ IF(DABS(S16-C2*S8) .LE. EPS*(1D0+DABS(S16))) THEN
+ H = H + S16
+ IF(BB .NE. B) GOTO 100
+ ELSE
+ BB = C1
+ IF(1D0 + CONST*ABS(C2) .NE. 1D0) GOTO 110
+ H = 0D0
+ CALL PYERRM(18,'(PYGAU2:) too high accuracy required')
+ GOTO 140
+ ENDIF
+ 140 CONTINUE
+ PYGAU2 = H
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSIMP
+C...Simpson formula for an integral.
+
+ FUNCTION PYSIMP(Y,X0,X1,N)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local variables.
+ DOUBLE PRECISION Y,X0,X1,H,S
+ DIMENSION Y(0:N)
+
+ S=0D0
+ H=(X1-X0)/N
+ DO 100 I=0,N-2,2
+ S=S+Y(I)+4D0*Y(I+1)+Y(I+2)
+ 100 CONTINUE
+ PYSIMP=S*H/3D0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYLAMF
+C...The standard lambda function.
+
+ FUNCTION PYLAMF(X,Y,Z)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Local variables.
+ DOUBLE PRECISION PYLAMF,X,Y,Z
+
+ PYLAMF=(X-(Y+Z))**2-4D0*Y*Z
+ IF(PYLAMF.LT.0D0) PYLAMF=0D0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTBDY
+C...Generates 3-body decays of gauginos.
+
+ SUBROUTINE PYTBDY(IDIN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+C COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+C COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+C SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYPARS/,/PYSSMT/
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYSSMT/
+
+C...Local variables.
+ DOUBLE PRECISION XM(5)
+ COMPLEX*16 OLPP,ORPP,QLL,QLR,QRR,QRL,GLIJ,GRIJ,PROPZ
+ COMPLEX*16 QLLS,QRRS,QLRS,QRLS,QLLU,QRRU,QLRT,QRLT
+ COMPLEX*16 ZMIXC(4,4),UMIXC(2,2),VMIXC(2,2)
+ DOUBLE PRECISION S12MIN,S12MAX,YJACO1,S23AVE,S23DF1,S23DF2
+ DOUBLE PRECISION D1,D2,D3,P1,P2,P3,CTHE1,STHE1,CTHE3,STHE3
+ DOUBLE PRECISION CPHI1,SPHI1
+ DOUBLE PRECISION S23DEL,EPS
+ DOUBLE PRECISION GOLDEN,AX,BX,CX,TOL,XMIN,R,C
+ PARAMETER (R=0.61803399D0,C=1D0-R,TOL=1D-3)
+ DOUBLE PRECISION F1,F2,X0,X1,X2,X3
+ INTEGER INOID(4)
+ DATA INOID/22,23,25,35/
+ DATA EPS/1D-6/
+
+ ID=IDIN
+ ISKIP=1
+ XM(1)=P(N+1,5)
+ XM(2)=P(N+2,5)
+ XM(3)=P(N+3,5)
+ XM(5)=P(ID,5)
+
+C...GENERATE S12
+ S12MIN=(XM(1)+XM(2))**2
+ S12MAX=(XM(5)-XM(3))**2
+ YJACO1=S12MAX-S12MIN
+
+C...Initialize some parameters
+ XW=PARU(102)
+ XW1=1D0-XW
+ TANW=SQRT(XW/XW1)
+ IZID1=0
+ IWID1=0
+ IZID2=0
+ IWID2=0
+
+ IA=K(N+2,2)
+ JA=K(N+3,2)
+
+C...Mrenna: check that we are indeed decaying a SUSY particle
+ IF(IABS(K(ID,2)).LT.KSUSY1.OR.IABS(K(ID,2)).GE.3000000) THEN
+
+ ELSE
+ DO 100 I1=1,4
+ IF(MOD(K(N+1,2),KSUSY1).EQ.INOID(I1)) IZID1=I1
+ IF(MOD(K(ID,2),KSUSY1).EQ.INOID(I1)) IZID2=I1
+ 100 CONTINUE
+ IF(MOD(K(N+1,2),KSUSY1).EQ.24) IWID1=1
+ IF(MOD(K(N+1,2),KSUSY1).EQ.37) IWID1=2
+ IF(MOD(K(ID,2),KSUSY1).EQ.24) IWID2=1
+ IF(MOD(K(ID,2),KSUSY1).EQ.37) IWID2=2
+ ZM12=XM(5)**2
+ ZM22=XM(1)**2
+ EI=KCHG(PYCOMP(IABS(IA)),1)/3D0
+ T3I=SIGN(1D0,EI+1D-6)/2D0
+ ENDIF
+
+ IF(MAX(ABS(IA),ABS(JA)).EQ.6) THEN
+ ISKIP=0
+ ELSEIF(IZID1*IZID2.NE.0) THEN
+ SQMZ=PMAS(23,1)**2
+ GMMZ=PMAS(23,1)*PMAS(23,2)
+ DO 110 I=1,4
+ ZMIXC(IZID1,I)=DCMPLX(ZMIX(IZID1,I),ZMIXI(IZID1,I))
+ ZMIXC(IZID2,I)=DCMPLX(ZMIX(IZID2,I),ZMIXI(IZID2,I))
+ 110 CONTINUE
+ OLPP=(ZMIXC(IZID1,3)*DCONJG(ZMIXC(IZID2,3))-
+ & ZMIXC(IZID1,4)*DCONJG(ZMIXC(IZID2,4)))/2D0
+ ORPP=DCONJG(OLPP)
+ XLL2=PMAS(PYCOMP(KSUSY1+IABS(IA)),1)**2
+ XLR2=XLL2
+ XRR2=PMAS(PYCOMP(KSUSY2+IABS(IA)),1)**2
+ XRL2=XRR2
+ GLIJ=(T3I*ZMIXC(IZID1,2)-TANW*(T3I-EI)*ZMIXC(IZID1,1))*
+ & DCONJG(T3I*ZMIXC(IZID2,2)-TANW*(T3I-EI)*ZMIXC(IZID2,1))
+ GRIJ=ZMIXC(IZID1,1)*DCONJG(ZMIXC(IZID2,1))*(EI*TANW)**2
+ XM1M2=SMZ(IZID1)*SMZ(IZID2)
+ QLLS=DCMPLX((T3I-EI*XW)/XW1)*OLPP
+ QLLU=-GLIJ
+ QLRS=-DCMPLX((T3I-EI*XW)/XW1)*ORPP
+ QLRT=DCONJG(GLIJ)
+ QRLS=-DCMPLX((EI*XW)/XW1)*OLPP
+ QRLT=GRIJ
+ QRRS=DCMPLX((EI*XW)/XW1)*ORPP
+ QRRU=-DCONJG(GRIJ)
+ ELSEIF(IZID1*IWID2.NE.0.OR.IZID2*IWID1.NE.0) THEN
+ IF(IZID1.NE.0) THEN
+ XM1M2=SMZ(IZID1)*SMW(IWID2)
+ IZID1=IWID2
+ IZID2=IZID1
+ ELSE
+ XM1M2=SMZ(IZID2)*SMW(IWID1)
+ IZID1=IWID1
+ ENDIF
+ RT2I = 1D0/SQRT(2D0)
+ SQMZ=PMAS(24,1)**2
+ GMMZ=PMAS(24,1)*PMAS(24,2)
+ DO 120 I=1,2
+ VMIXC(IZID1,I)=DCMPLX(VMIX(IZID1,I),VMIXI(IZID1,I))
+ UMIXC(IZID1,I)=DCMPLX(UMIX(IZID1,I),UMIXI(IZID1,I))
+ 120 CONTINUE
+ DO 130 I=1,4
+ ZMIXC(IZID2,I)=DCMPLX(ZMIX(IZID2,I),ZMIXI(IZID2,I))
+ 130 CONTINUE
+ QLLS=(DCONJG(ZMIXC(IZID2,2))*VMIXC(IZID1,1)-
+ & DCONJG(ZMIXC(IZID2,4))*VMIXC(IZID1,2)*RT2I)
+ QLRS=(ZMIXC(IZID2,2)*DCONJG(UMIXC(IZID1,1))+
+ & ZMIXC(IZID2,3)*DCONJG(UMIXC(IZID1,2))*RT2I)
+ EJ=KCHG(IABS(JA),1)/3D0
+ T3J=SIGN(1D0,EJ+1D-6)/2D0
+ QRLS=DCMPLX(0D0,0D0)
+ QRLT=QRLS
+ QRRS=QRLS
+ QRRU=QRLS
+ XRR2=1D6**2
+ XRL2=XRR2
+ XLR2 = PMAS(PYCOMP(KSUSY1+IABS(JA)),1)**2
+ XLL2 = PMAS(PYCOMP(KSUSY1+IABS(IA)),1)**2
+ IF(MOD(IA,2).EQ.0) THEN
+ QLLU=VMIXC(IZID1,1)*DCONJG(ZMIXC(IZID2,1)*(EI-T3I)*
+ & TANW+ZMIXC(IZID2,2)*T3I)
+ QLRT=-DCONJG(UMIXC(IZID1,1))*(
+ & ZMIXC(IZID2,1)*(EJ-T3J)*TANW+ZMIXC(IZID2,2)*T3J)
+ ELSE
+ QLLU=VMIXC(IZID1,1)*DCONJG(ZMIXC(IZID2,1)*(EJ-T3J)*
+ & TANW+ZMIXC(IZID2,2)*T3J)
+ QLRT=-DCONJG(UMIXC(IZID1,1))*(
+ & ZMIXC(IZID2,1)*(EI-T3I)*TANW+ZMIXC(IZID2,2)*T3I)
+ ENDIF
+ ELSEIF(IWID1*IWID2.NE.0) THEN
+ IZID1=IWID1
+ IZID2=IWID2
+ XM1M2=SMW(IWID1)*SMW(IWID2)
+ SQMZ=PMAS(23,1)**2
+ GMMZ=PMAS(23,1)*PMAS(23,2)
+ DO 140 I=1,2
+ VMIXC(IZID1,I)=DCMPLX(VMIX(IZID1,I),VMIXI(IZID1,I))
+ UMIXC(IZID1,I)=DCMPLX(UMIX(IZID1,I),UMIXI(IZID1,I))
+ VMIXC(IZID2,I)=DCMPLX(VMIX(IZID2,I),VMIXI(IZID2,I))
+ UMIXC(IZID2,I)=DCMPLX(UMIX(IZID2,I),UMIXI(IZID2,I))
+ 140 CONTINUE
+ OLPP=-VMIXC(IZID2,1)*DCONJG(VMIXC(IZID1,1))-
+ & VMIXC(IZID2,2)*DCONJG(VMIXC(IZID1,2))/2D0
+ ORPP=-UMIXC(IZID1,1)*DCONJG(UMIXC(IZID2,1))-
+ & UMIXC(IZID1,2)*DCONJG(UMIXC(IZID2,2))/2D0
+ QRLS=-DCMPLX(EI/XW1)*ORPP
+ QLLS=DCMPLX((T3I-XW*EI)/XW/XW1)*ORPP
+ QRRS=-DCMPLX(EI/XW1)*OLPP
+ QLRS=DCMPLX((T3I-XW*EI)/XW/XW1)*OLPP
+ IF(MOD(IA,2).EQ.0) THEN
+ XLR2=PMAS(PYCOMP(KSUSY1+IABS(IA)-1),1)**2
+ QLRT=-UMIXC(IZID2,1)*DCONJG(UMIXC(IZID1,1))*DCMPLX(T3I/XW)
+ ELSE
+ XLR2=PMAS(PYCOMP(KSUSY1+IABS(IA)+1),1)**2
+ QLRT=-VMIXC(IZID2,1)*DCONJG(VMIXC(IZID1,1))*DCMPLX(T3I/XW)
+ ENDIF
+ ELSEIF(MOD(K(N+1,2),KSUSY1).EQ.21.OR.MOD(K(ID,2),KSUSY1).EQ.21)
+ &THEN
+ ISKIP=0
+ ELSE
+ ISKIP=0
+ ENDIF
+
+ IF(ISKIP.NE.0) THEN
+ WTMAX=0D0
+ DO 160 KT=1,100
+ S12=S12MIN+YJACO1*(KT-1)/99
+ S23AVE=XM(2)**2+XM(3)**2-(S12+XM(2)**2-XM(1)**2)
+ & *(S12+XM(3)**2-XM(5)**2)/(2D0*S12)
+ S23DF1=(S12-XM(2)**2-XM(1)**2)**2
+ & -(2D0*XM(1)*XM(2))**2
+ S23DF2=(S12-XM(3)**2-XM(5)**2)**2
+ & -(2D0*XM(3)*XM(5))**2
+ S23DF1=S23DF1*EPS
+ S23DF2=S23DF2*EPS
+ S23DEL=SQRT(MAX(0D0,S23DF1*S23DF2))/(2D0*S12)
+ S23DEL=S23DEL/EPS
+ S23MIN=S23AVE-S23DEL
+ S23MAX=S23AVE+S23DEL
+ YJACO2=S23MAX-S23MIN
+ TH=S12
+ DO 150 KS=1,100
+ S23=S23MIN+YJACO2*(KS-1)/99
+ SH=S23
+ UH=ZM12+ZM22-SH-TH
+ WU2 = (UH-ZM12)*(UH-ZM22)
+ WT2 = (TH-ZM12)*(TH-ZM22)
+ WS2 = XM1M2*SH
+ PROPZ2 = (SH-SQMZ)**2 + GMMZ**2
+ PROPZ=DCMPLX(SH-SQMZ,-GMMZ)/DCMPLX(PROPZ2)
+ QLL=QLLS*PROPZ+QLLU/DCMPLX(UH-XLL2)
+ QLR=QLRS*PROPZ+QLRT/DCMPLX(TH-XLR2)
+ QRL=QRLS*PROPZ+QRLT/DCMPLX(TH-XRL2)
+ QRR=QRRS*PROPZ+QRRU/DCMPLX(UH-XRR2)
+ WT0=-((ABS(QLL)**2+ABS(QRR)**2)*WU2+
+ & (ABS(QRL)**2+ABS(QLR)**2)*WT2+
+ & 2D0*DBLE(QLR*DCONJG(QLL)+QRL*DCONJG(QRR))*WS2)
+ IF(WT0.GT.WTMAX) WTMAX=WT0
+ 150 CONTINUE
+ 160 CONTINUE
+
+ WTMAX=WTMAX*1.05D0
+ ENDIF
+
+C...FIND S12*
+ AX=S12MIN
+ CX=S12MAX
+ BX=S12MIN+0.5D0*YJACO1
+ X0=AX
+ X3=CX
+ IF(ABS(CX-BX).GT.ABS(BX-AX))THEN
+ X1=BX
+ X2=BX+C*(CX-BX)
+ ELSE
+ X2=BX
+ X1=BX-C*(BX-AX)
+ ENDIF
+
+C...SOLVE FOR F1 AND F2
+ S23DF1=(X1-XM(2)**2-XM(1)**2)**2
+ &-(2D0*XM(1)*XM(2))**2
+ S23DF2=(X1-XM(3)**2-XM(5)**2)**2
+ &-(2D0*XM(3)*XM(5))**2
+ S23DF1=S23DF1*EPS
+ S23DF2=S23DF2*EPS
+ S23DEL=SQRT(MAX(0D0,S23DF1*S23DF2))/(2D0*X1)
+ F1=-2D0*S23DEL/EPS
+ S23DF1=(X2-XM(2)**2-XM(1)**2)**2
+ &-(2D0*XM(1)*XM(2))**2
+ S23DF2=(X2-XM(3)**2-XM(5)**2)**2
+ &-(2D0*XM(3)*XM(5))**2
+ S23DF1=S23DF1*EPS
+ S23DF2=S23DF2*EPS
+ S23DEL=SQRT(MAX(0D0,S23DF1*S23DF2))/(2D0*X2)
+ F2=-2D0*S23DEL/EPS
+
+ 170 IF(ABS(X3-X0).GT.TOL*(ABS(X1)+ABS(X2)))THEN
+C...Possibility of infinite loop with .LT.; changed to .LE. (SKANDS)
+ IF(F2.LE.F1)THEN
+ X0=X1
+ X1=X2
+ X2=R*X1+C*X3
+ F1=F2
+ S23DF1=(X2-XM(2)**2-XM(1)**2)**2
+ & -(2D0*XM(1)*XM(2))**2
+ S23DF2=(X2-XM(3)**2-XM(5)**2)**2
+ & -(2D0*XM(3)*XM(5))**2
+ S23DF1=S23DF1*EPS
+ S23DF2=S23DF2*EPS
+ S23DEL=SQRT(MAX(0D0,S23DF1*S23DF2))/(2D0*X2)
+ F2=-2D0*S23DEL/EPS
+ ELSE
+ X3=X2
+ X2=X1
+ X1=R*X2+C*X0
+ F2=F1
+ S23DF1=(X1-XM(2)**2-XM(1)**2)**2
+ & -(2D0*XM(1)*XM(2))**2
+ S23DF2=(X1-XM(3)**2-XM(5)**2)**2
+ & -(2D0*XM(3)*XM(5))**2
+ S23DF1=S23DF1*EPS
+ S23DF2=S23DF2*EPS
+ S23DEL=SQRT(MAX(0D0,S23DF1*S23DF2))/(2D0*X1)
+ F1=-2D0*S23DEL/EPS
+ ENDIF
+ GOTO 170
+ ENDIF
+C...WE WANT THE MAXIMUM, NOT THE MINIMUM
+ IF(F1.LT.F2)THEN
+ GOLDEN=-F1
+ XMIN=X1
+ ELSE
+ GOLDEN=-F2
+ XMIN=X2
+ ENDIF
+
+ IKNT=0
+ 180 S12=S12MIN+PYR(0)*YJACO1
+ IKNT=IKNT+1
+C...GENERATE S23
+ S23AVE=XM(2)**2+XM(3)**2-(S12+XM(2)**2-XM(1)**2)
+ &*(S12+XM(3)**2-XM(5)**2)/(2D0*S12)
+ S23DF1=(S12-XM(2)**2-XM(1)**2)**2
+ &-(2D0*XM(1)*XM(2))**2
+ S23DF2=(S12-XM(3)**2-XM(5)**2)**2
+ &-(2D0*XM(3)*XM(5))**2
+ S23DF1=S23DF1*EPS
+ S23DF2=S23DF2*EPS
+ S23DEL=SQRT(MAX(0D0,S23DF1*S23DF2))/(2D0*S12)
+ S23DEL=S23DEL/EPS
+ S23MIN=S23AVE-S23DEL
+ S23MAX=S23AVE+S23DEL
+ YJACO2=S23MAX-S23MIN
+ S23=S23MIN+PYR(0)*YJACO2
+
+C...CHECK THE SAMPLING
+ IF(IKNT.GT.100) THEN
+ WRITE(MSTU(11),*) ' IKNT > 100 IN PYTBDY '
+ GOTO 190
+ ENDIF
+ IF(YJACO2.LT.PYR(0)*GOLDEN) GOTO 180
+
+ IF(ISKIP.EQ.0) GOTO 190
+
+ SH=S23
+ TH=S12
+ UH=ZM12+ZM22-SH-TH
+
+ WU2 = (UH-ZM12)*(UH-ZM22)
+ WT2 = (TH-ZM12)*(TH-ZM22)
+ WS2 = XM1M2*SH
+ PROPZ2 = (SH-SQMZ)**2 + GMMZ**2
+ PROPZ=DCMPLX(SH-SQMZ,-GMMZ)/DCMPLX(PROPZ2)
+
+ QLL=QLLS*PROPZ+QLLU/DCMPLX(UH-XLL2)
+ QLR=QLRS*PROPZ+QLRT/DCMPLX(TH-XLR2)
+ QRL=QRLS*PROPZ+QRLT/DCMPLX(TH-XRL2)
+ QRR=QRRS*PROPZ+QRRU/DCMPLX(UH-XRR2)
+c QLL=DCMPLX((T3I-EI*XW)/XW1)*OLPP*PROPZ-GLIJ/DCMPLX(UH-XML2)
+c QLR=-DCMPLX((T3I-EI*XW)/XW1)*ORPP*PROPZ+DCONJG(GLIJ)
+c &/DCMPLX(TH-XML2)
+c QRL=-DCMPLX((EI*XW)/XW1)*OLPP*PROPZ+GRIJ/DCMPLX(TH-XMR2)
+c QRR=DCMPLX((EI*XW)/XW1)*ORPP*PROPZ
+c &-DCONJG(GRIJ)/DCMPLX(UH-XMR2)
+ WT=-((ABS(QLL)**2+ABS(QRR)**2)*WU2+
+ &(ABS(QRL)**2+ABS(QLR)**2)*WT2+
+ &2D0*DBLE(QLR*DCONJG(QLL)+QRL*DCONJG(QRR))*WS2)
+
+ IF(WT.LT.PYR(0)*WTMAX) GOTO 180
+ IF(WT.GT.WTMAX) PRINT*,' WT > WTMAX ',WT,WTMAX
+
+ 190 D3=(XM(5)**2+XM(3)**2-S12)/(2D0*XM(5))
+ D1=(XM(5)**2+XM(1)**2-S23)/(2D0*XM(5))
+ D2=XM(5)-D1-D3
+ P1=SQRT(D1*D1-XM(1)**2)
+ P2=SQRT(D2*D2-XM(2)**2)
+ P3=SQRT(D3*D3-XM(3)**2)
+ CTHE1=2D0*PYR(0)-1D0
+ ANG1=2D0*PYR(0)*PARU(1)
+ CPHI1=COS(ANG1)
+ SPHI1=SIN(ANG1)
+ ARG=1D0-CTHE1**2
+ IF(ARG.LT.0D0.AND.ARG.GT.-1D-3) ARG=0D0
+ STHE1=SQRT(ARG)
+ P(N+1,1)=P1*STHE1*CPHI1
+ P(N+1,2)=P1*STHE1*SPHI1
+ P(N+1,3)=P1*CTHE1
+ P(N+1,4)=D1
+
+C...GET CPHI3
+ ANG3=2D0*PYR(0)*PARU(1)
+ CPHI3=COS(ANG3)
+ SPHI3=SIN(ANG3)
+ CTHE3=(P2**2-P1**2-P3**2)/2D0/P1/P3
+ ARG=1D0-CTHE3**2
+ IF(ARG.LT.0D0.AND.ARG.GT.-1D-3) ARG=0D0
+ STHE3=SQRT(ARG)
+ P(N+3,1)=-P3*STHE3*CPHI3*CTHE1*CPHI1
+ &+P3*STHE3*SPHI3*SPHI1
+ &+P3*CTHE3*STHE1*CPHI1
+ P(N+3,2)=-P3*STHE3*CPHI3*CTHE1*SPHI1
+ &-P3*STHE3*SPHI3*CPHI1
+ &+P3*CTHE3*STHE1*SPHI1
+ P(N+3,3)=P3*STHE3*CPHI3*STHE1
+ &+P3*CTHE3*CTHE1
+ P(N+3,4)=D3
+
+ DO 200 I=1,3
+ P(N+2,I)=-P(N+1,I)-P(N+3,I)
+ 200 CONTINUE
+ P(N+2,4)=D2
+
+ RETURN
+ END
+
+
+C*********************************************************************
+
+C...PYTECM
+C...Finds the s-hat dependent eigenvalues of the inverse propagator
+C...matrix for gamma, Z, techni-rho, and techni-omega to optimize the
+C...phase space generation. Extended to include techni-a meson, and
+C...to return the width.
+
+ SUBROUTINE PYTECM(SMIN,SMOU,WIDO,IOPT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/,/PYTCSM/
+
+C...Local variables.
+ DOUBLE PRECISION AR(5,5),WR(5),ZR(5,5),ZI(5,5),WORK(12,12),
+ &AT(5,5),WI(5),FV1(5),FV2(5),FV3(5),SH,AEM,TANW,CT2W,QUPD,ALPRHT,
+ &FAR,FAO,FZR,FZO,SHR,R1,R2,S1,S2,WDTP(0:400),WDTE(0:400,0:5),WX(5)
+ INTEGER i,j,ierr
+
+ SH=SMIN
+ SHR=SQRT(SH)
+ AEM=PYALEM(SH)
+
+ SINW=MIN(SQRT(PARU(102)),1D0)
+ COSW=SQRT(1D0-SINW**2)
+ TANW=SINW/COSW
+ CT2W=(1D0-2D0*PARU(102))/(2D0*PARU(102)/TANW)
+ QUPD=2D0*RTCM(2)-1D0
+
+ ALPRHT=2.16D0*(3D0/DBLE(ITCM(1)))
+ FAR=SQRT(AEM/ALPRHT)
+ FAO=FAR*QUPD
+ FZR=FAR*CT2W
+ FZO=-FAO*TANW
+ FZX=-FAR/RTCM(47)/(2D0*SINW*COSW)
+ FWR=FAR/(2D0*SINW)
+ FWX=-FWR/RTCM(47)
+
+ DO 110 I=1,5
+ DO 100 J=1,5
+ AT(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...NC
+ IF(IOPT.EQ.1) THEN
+ AR(1,1) = SH
+ AR(2,2) = SH-PMAS(23,1)**2
+ AR(3,3) = SH-PMAS(PYCOMP(KTECHN+113),1)**2
+ AR(4,4) = SH-PMAS(PYCOMP(KTECHN+223),1)**2
+ AR(5,5) = SH-PMAS(PYCOMP(KTECHN+115),1)**2
+ AR(1,2) = 0D0
+ AR(2,1) = 0D0
+ AR(1,3) = SH*FAR
+ AR(3,1) = AR(1,3)
+ AR(1,4) = SH*FAO
+ AR(4,1) = AR(1,4)
+ AR(2,3) = SH*FZR
+ AR(3,2) = AR(2,3)
+ AR(2,4) = SH*FZO
+ AR(4,2) = AR(2,4)
+ AR(3,4) = 0D0
+ AR(4,3) = 0D0
+ AR(2,5) = SH*FZX
+ AR(5,2) = AR(2,5)
+ AR(1,5) = 0D0
+ AR(5,1) = AR(1,5)
+ AR(3,5) = 0D0
+ AR(5,3) = AR(3,5)
+ AR(4,5) = 0D0
+ AR(5,4) = AR(4,5)
+ CALL PYWIDT(23,SH,WDTP,WDTE)
+ AT(2,2) = WDTP(0)*SHR
+ CALL PYWIDT(KTECHN+113,SH,WDTP,WDTE)
+ AT(3,3) = WDTP(0)*SHR
+ CALL PYWIDT(KTECHN+223,SH,WDTP,WDTE)
+ AT(4,4) = WDTP(0)*SHR
+ CALL PYWIDT(KTECHN+115,SH,WDTP,WDTE)
+ AT(5,5) = WDTP(0)*SHR
+ IDIM=5
+C...CC
+ ELSE
+ AR(1,1) = SH-PMAS(24,1)**2
+ AR(2,2) = SH-PMAS(PYCOMP(KTECHN+213),1)**2
+ AR(3,3) = SH-PMAS(PYCOMP(KTECHN+215),1)**2
+ AR(1,2) = SH*FWR
+ AR(2,1) = AR(1,2)
+ AR(1,3) = SH*FWX
+ AR(3,1) = AR(1,3)
+ AR(2,3) = 0D0
+ AR(3,2) = 0D0
+ CALL PYWIDT(24,SH,WDTP,WDTE)
+ AT(1,1) = WDTP(0)*SHR
+ CALL PYWIDT(KTECHN+213,SH,WDTP,WDTE)
+ AT(2,2) = WDTP(0)*SHR
+ CALL PYWIDT(KTECHN+215,SH,WDTP,WDTE)
+ AT(3,3) = WDTP(0)*SHR
+ IDIM=3
+ ENDIF
+ CALL PYEICG(IDIM,IDIM,AR,AT,WR,WI,0,ZR,ZI,FV1,FV2,FV3,IERR)
+
+ IMIN=1
+ SXMN=1D20
+ DO 120 I=1,IDIM
+ WX(I)=SQRT(ABS(SH-WR(I)))
+ WR(I)=ABS(WR(I))
+ IF(WR(I).LT.SXMN) THEN
+ SXMN=WR(I)
+ IMIN=I
+ ENDIF
+ 120 CONTINUE
+ SMOU=WX(IMIN)**2
+ WIDO=WI(IMIN)/SHR
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYEIGC
+C...Finds eigenvalues of a general complex matrix
+C
+C THIS SUBROUTINE CALLS THE RECOMMENDED SEQUENCE OF
+C SUBROUTINES FROM THE EIGENSYSTEM SUBROUTINE PACKAGE (EISPACK)
+C TO FIND THE EIGENVALUES AND EIGENVECTORS (IF DESIRED)
+C OF A COMPLEX GENERAL MATRIX.
+C
+C ON INPUT
+C
+C NM MUST BE SET TO THE ROW DIMENSION OF THE TWO-DIMENSIONAL
+C ARRAY PARAMETERS AS DECLARED IN THE CALLING PROGRAM
+C DIMENSION STATEMENT.
+C
+C N IS THE ORDER OF THE MATRIX A=(AR,AI).
+C
+C AR AND AI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE COMPLEX GENERAL MATRIX.
+C
+C MATZ IS AN INTEGER VARIABLE SET EQUAL TO ZERO IF
+C ONLY EIGENVALUES ARE DESIRED. OTHERWISE IT IS SET TO
+C ANY NON-ZERO INTEGER FOR BOTH EIGENVALUES AND EIGENVECTORS.
+C
+C ON OUTPUT
+C
+C WR AND WI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE EIGENVALUES.
+C
+C ZR AND ZI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE EIGENVECTORS IF MATZ IS NOT ZERO.
+C
+C IERR IS AN INTEGER OUTPUT VARIABLE SET EQUAL TO AN ERROR
+C COMPLETION CODE DESCRIBED IN THE DOCUMENTATION FOR COMQR
+C AND COMQR2. THE NORMAL COMPLETION CODE IS ZERO.
+C
+C FV1, FV2, AND FV3 ARE TEMPORARY STORAGE ARRAYS.
+C
+C QUESTIONS AND COMMENTS SHOULD BE DIRECTED TO BURTON S. GARBOW,
+C MATHEMATICS AND COMPUTER SCIENCE DIV, ARGONNE NATIONAL LABORATORY
+C
+C THIS VERSION DATED AUGUST 1983.
+C
+
+ SUBROUTINE PYEICG(NM,N,AR,AI,WR,WI,MATZ,ZR,ZI,FV1,FV2,FV3,IERR)
+
+ INTEGER N,NM,IS1,IS2,IERR,MATZ
+ DOUBLE PRECISION AR(5,5),AI(5,5),WR(5),WI(5),ZR(5,5),ZI(5,5),
+ X FV1(5),FV2(5),FV3(5)
+ IF (N .LE. NM) GOTO 100
+ IERR = 10 * N
+ GOTO 120
+C
+ 100 CALL PYCBAL(NM,N,AR,AI,IS1,IS2,FV1)
+ CALL PYCRTH(NM,N,IS1,IS2,AR,AI,FV2,FV3)
+ IF (MATZ .NE. 0) GOTO 110
+C .......... FIND EIGENVALUES ONLY ..........
+ CALL PYCMQR(NM,N,IS1,IS2,AR,AI,WR,WI,IERR)
+ GOTO 120
+C .......... FIND BOTH EIGENVALUES AND EIGENVECTORS ..........
+ 110 CALL PYCMQ2(NM,N,IS1,IS2,FV2,FV3,AR,AI,WR,WI,ZR,ZI,IERR)
+ IF (IERR .NE. 0) GOTO 120
+ CALL PYCBA2(NM,N,IS1,IS2,FV1,N,ZR,ZI)
+ 120 RETURN
+ END
+
+C*********************************************************************
+
+C...PYCMQR
+C...Auxiliary to PYEICG.
+C
+C THIS SUBROUTINE IS A TRANSLATION OF A UNITARY ANALOGUE OF THE
+C ALGOL PROCEDURE COMLR, NUM. MATH. 12, 369-376(1968) BY MARTIN
+C AND WILKINSON.
+C HANDBOOK FOR AUTO. COMP., VOL.II-LINEAR ALGEBRA, 396-403(1971).
+C THE UNITARY ANALOGUE SUBSTITUTES THE QR ALGORITHM OF FRANCIS
+C (COMP. JOUR. 4, 332-345(1962)) FOR THE LR ALGORITHM.
+C
+C THIS SUBROUTINE FINDS THE EIGENVALUES OF A COMPLEX
+C UPPER HESSENBERG MATRIX BY THE QR METHOD.
+C
+C ON INPUT
+C
+C NM MUST BE SET TO THE ROW DIMENSION OF TWO-DIMENSIONAL
+C ARRAY PARAMETERS AS DECLARED IN THE CALLING PROGRAM
+C DIMENSION STATEMENT.
+C
+C N IS THE ORDER OF THE MATRIX.
+C
+C LOW AND IGH ARE INTEGERS DETERMINED BY THE BALANCING
+C SUBROUTINE CBAL. IF CBAL HAS NOT BEEN USED,
+C SET LOW=1, IGH=N.
+C
+C HR AND HI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE COMPLEX UPPER HESSENBERG MATRIX.
+C THEIR LOWER TRIANGLES BELOW THE SUBDIAGONAL CONTAIN
+C INFORMATION ABOUT THE UNITARY TRANSFORMATIONS USED IN
+C THE REDUCTION BY CORTH, IF PERFORMED.
+C
+C ON OUTPUT
+C
+C THE UPPER HESSENBERG PORTIONS OF HR AND HI HAVE BEEN
+C DESTROYED. THEREFORE, THEY MUST BE SAVED BEFORE
+C CALLING COMQR IF SUBSEQUENT CALCULATION OF
+C EIGENVECTORS IS TO BE PERFORMED.
+C
+C WR AND WI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE EIGENVALUES. IF AN ERROR
+C EXIT IS MADE, THE EIGENVALUES SHOULD BE CORRECT
+C FOR INDICES IERR+1,...,N.
+C
+C IERR IS SET TO
+C ZERO FOR NORMAL RETURN,
+C J IF THE LIMIT OF 30*N ITERATIONS IS EXHAUSTED
+C WHILE THE J-TH EIGENVALUE IS BEING SOUGHT.
+C
+C CALLS PYCDIV FOR COMPLEX DIVISION.
+C CALLS PYCSRT FOR COMPLEX SQUARE ROOT.
+C CALLS PYTHAG FOR DSQRT(A*A + B*B) .
+C
+C QUESTIONS AND COMMENTS SHOULD BE DIRECTED TO BURTON S. GARBOW,
+C MATHEMATICS AND COMPUTER SCIENCE DIV, ARGONNE NATIONAL LABORATORY
+C
+C THIS VERSION DATED AUGUST 1983.
+C
+
+ SUBROUTINE PYCMQR(NM,N,LOW,IGH,HR,HI,WR,WI,IERR)
+
+ INTEGER I,J,L,N,EN,LL,NM,IGH,ITN,ITS,LOW,LP1,ENM1,IERR
+ DOUBLE PRECISION HR(5,5),HI(5,5),WR(5),WI(5)
+ DOUBLE PRECISION SI,SR,TI,TR,XI,XR,YI,YR,ZZI,ZZR,NORM,TST1,TST2,
+ X PYTHAG
+
+ IERR = 0
+ IF (LOW .EQ. IGH) GOTO 130
+C .......... CREATE REAL SUBDIAGONAL ELEMENTS ..........
+ L = LOW + 1
+C
+ DO 120 I = L, IGH
+ LL = MIN0(I+1,IGH)
+ IF (HI(I,I-1) .EQ. 0.0D0) GOTO 120
+ NORM = PYTHAG(HR(I,I-1),HI(I,I-1))
+ YR = HR(I,I-1) / NORM
+ YI = HI(I,I-1) / NORM
+ HR(I,I-1) = NORM
+ HI(I,I-1) = 0.0D0
+C
+ DO 100 J = I, IGH
+ SI = YR * HI(I,J) - YI * HR(I,J)
+ HR(I,J) = YR * HR(I,J) + YI * HI(I,J)
+ HI(I,J) = SI
+ 100 CONTINUE
+C
+ DO 110 J = LOW, LL
+ SI = YR * HI(J,I) + YI * HR(J,I)
+ HR(J,I) = YR * HR(J,I) - YI * HI(J,I)
+ HI(J,I) = SI
+ 110 CONTINUE
+C
+ 120 CONTINUE
+C .......... STORE ROOTS ISOLATED BY CBAL ..........
+ 130 DO 140 I = 1, N
+ IF (I .GE. LOW .AND. I .LE. IGH) GOTO 140
+ WR(I) = HR(I,I)
+ WI(I) = HI(I,I)
+ 140 CONTINUE
+C
+ EN = IGH
+ TR = 0.0D0
+ TI = 0.0D0
+ ITN = 30*N
+C .......... SEARCH FOR NEXT EIGENVALUE ..........
+ 150 IF (EN .LT. LOW) GOTO 320
+ ITS = 0
+ ENM1 = EN - 1
+C .......... LOOK FOR SINGLE SMALL SUB-DIAGONAL ELEMENT
+C FOR L=EN STEP -1 UNTIL LOW D0 -- ..........
+ 160 DO 170 LL = LOW, EN
+ L = EN + LOW - LL
+ IF (L .EQ. LOW) GOTO 180
+ TST1 = DABS(HR(L-1,L-1)) + DABS(HI(L-1,L-1))
+ X + DABS(HR(L,L)) + DABS(HI(L,L))
+ TST2 = TST1 + DABS(HR(L,L-1))
+ IF (TST2 .EQ. TST1) GOTO 180
+ 170 CONTINUE
+C .......... FORM SHIFT ..........
+ 180 IF (L .EQ. EN) GOTO 300
+ IF (ITN .EQ. 0) GOTO 310
+ IF (ITS .EQ. 10 .OR. ITS .EQ. 20) GOTO 200
+ SR = HR(EN,EN)
+ SI = HI(EN,EN)
+ XR = HR(ENM1,EN) * HR(EN,ENM1)
+ XI = HI(ENM1,EN) * HR(EN,ENM1)
+ IF (XR .EQ. 0.0D0 .AND. XI .EQ. 0.0D0) GOTO 210
+ YR = (HR(ENM1,ENM1) - SR) / 2.0D0
+ YI = (HI(ENM1,ENM1) - SI) / 2.0D0
+ CALL PYCSRT(YR**2-YI**2+XR,2.0D0*YR*YI+XI,ZZR,ZZI)
+ IF (YR * ZZR + YI * ZZI .GE. 0.0D0) GOTO 190
+ ZZR = -ZZR
+ ZZI = -ZZI
+ 190 CALL PYCDIV(XR,XI,YR+ZZR,YI+ZZI,XR,XI)
+ SR = SR - XR
+ SI = SI - XI
+ GOTO 210
+C .......... FORM EXCEPTIONAL SHIFT ..........
+ 200 SR = DABS(HR(EN,ENM1)) + DABS(HR(ENM1,EN-2))
+ SI = 0.0D0
+C
+ 210 DO 220 I = LOW, EN
+ HR(I,I) = HR(I,I) - SR
+ HI(I,I) = HI(I,I) - SI
+ 220 CONTINUE
+C
+ TR = TR + SR
+ TI = TI + SI
+ ITS = ITS + 1
+ ITN = ITN - 1
+C .......... REDUCE TO TRIANGLE (ROWS) ..........
+ LP1 = L + 1
+C
+ DO 240 I = LP1, EN
+ SR = HR(I,I-1)
+ HR(I,I-1) = 0.0D0
+ NORM = PYTHAG(PYTHAG(HR(I-1,I-1),HI(I-1,I-1)),SR)
+ XR = HR(I-1,I-1) / NORM
+ WR(I-1) = XR
+ XI = HI(I-1,I-1) / NORM
+ WI(I-1) = XI
+ HR(I-1,I-1) = NORM
+ HI(I-1,I-1) = 0.0D0
+ HI(I,I-1) = SR / NORM
+C
+ DO 230 J = I, EN
+ YR = HR(I-1,J)
+ YI = HI(I-1,J)
+ ZZR = HR(I,J)
+ ZZI = HI(I,J)
+ HR(I-1,J) = XR * YR + XI * YI + HI(I,I-1) * ZZR
+ HI(I-1,J) = XR * YI - XI * YR + HI(I,I-1) * ZZI
+ HR(I,J) = XR * ZZR - XI * ZZI - HI(I,I-1) * YR
+ HI(I,J) = XR * ZZI + XI * ZZR - HI(I,I-1) * YI
+ 230 CONTINUE
+C
+ 240 CONTINUE
+C
+ SI = HI(EN,EN)
+ IF (SI .EQ. 0.0D0) GOTO 250
+ NORM = PYTHAG(HR(EN,EN),SI)
+ SR = HR(EN,EN) / NORM
+ SI = SI / NORM
+ HR(EN,EN) = NORM
+ HI(EN,EN) = 0.0D0
+C .......... INVERSE OPERATION (COLUMNS) ..........
+ 250 DO 280 J = LP1, EN
+ XR = WR(J-1)
+ XI = WI(J-1)
+C
+ DO 270 I = L, J
+ YR = HR(I,J-1)
+ YI = 0.0D0
+ ZZR = HR(I,J)
+ ZZI = HI(I,J)
+ IF (I .EQ. J) GOTO 260
+ YI = HI(I,J-1)
+ HI(I,J-1) = XR * YI + XI * YR + HI(J,J-1) * ZZI
+ 260 HR(I,J-1) = XR * YR - XI * YI + HI(J,J-1) * ZZR
+ HR(I,J) = XR * ZZR + XI * ZZI - HI(J,J-1) * YR
+ HI(I,J) = XR * ZZI - XI * ZZR - HI(J,J-1) * YI
+ 270 CONTINUE
+C
+ 280 CONTINUE
+C
+ IF (SI .EQ. 0.0D0) GOTO 160
+C
+ DO 290 I = L, EN
+ YR = HR(I,EN)
+ YI = HI(I,EN)
+ HR(I,EN) = SR * YR - SI * YI
+ HI(I,EN) = SR * YI + SI * YR
+ 290 CONTINUE
+C
+ GOTO 160
+C .......... A ROOT FOUND ..........
+ 300 WR(EN) = HR(EN,EN) + TR
+ WI(EN) = HI(EN,EN) + TI
+ EN = ENM1
+ GOTO 150
+C .......... SET ERROR -- ALL EIGENVALUES HAVE NOT
+C CONVERGED AFTER 30*N ITERATIONS ..........
+ 310 IERR = EN
+ 320 RETURN
+ END
+
+C*********************************************************************
+
+C...PYCMQ2
+C...Auxiliary to PYEICG.
+C
+C THIS SUBROUTINE IS A TRANSLATION OF A UNITARY ANALOGUE OF THE
+C ALGOL PROCEDURE COMLR2, NUM. MATH. 16, 181-204(1970) BY PETERS
+C AND WILKINSON.
+C HANDBOOK FOR AUTO. COMP., VOL.II-LINEAR ALGEBRA, 372-395(1971).
+C THE UNITARY ANALOGUE SUBSTITUTES THE QR ALGORITHM OF FRANCIS
+C (COMP. JOUR. 4, 332-345(1962)) FOR THE LR ALGORITHM.
+C
+C THIS SUBROUTINE FINDS THE EIGENVALUES AND EIGENVECTORS
+C OF A COMPLEX UPPER HESSENBERG MATRIX BY THE QR
+C METHOD. THE EIGENVECTORS OF A COMPLEX GENERAL MATRIX
+C CAN ALSO BE FOUND IF CORTH HAS BEEN USED TO REDUCE
+C THIS GENERAL MATRIX TO HESSENBERG FORM.
+C
+C ON INPUT
+C
+C NM MUST BE SET TO THE ROW DIMENSION OF TWO-DIMENSIONAL
+C ARRAY PARAMETERS AS DECLARED IN THE CALLING PROGRAM
+C DIMENSION STATEMENT.
+C
+C N IS THE ORDER OF THE MATRIX.
+C
+C LOW AND IGH ARE INTEGERS DETERMINED BY THE BALANCING
+C SUBROUTINE CBAL. IF CBAL HAS NOT BEEN USED,
+C SET LOW=1, IGH=N.
+C
+C ORTR AND ORTI CONTAIN INFORMATION ABOUT THE UNITARY TRANS-
+C FORMATIONS USED IN THE REDUCTION BY CORTH, IF PERFORMED.
+C ONLY ELEMENTS LOW THROUGH IGH ARE USED. IF THE EIGENVECTORS
+C OF THE HESSENBERG MATRIX ARE DESIRED, SET ORTR(J) AND
+C ORTI(J) TO 0.0D0 FOR THESE ELEMENTS.
+C
+C HR AND HI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE COMPLEX UPPER HESSENBERG MATRIX.
+C THEIR LOWER TRIANGLES BELOW THE SUBDIAGONAL CONTAIN FURTHER
+C INFORMATION ABOUT THE TRANSFORMATIONS WHICH WERE USED IN THE
+C REDUCTION BY CORTH, IF PERFORMED. IF THE EIGENVECTORS OF
+C THE HESSENBERG MATRIX ARE DESIRED, THESE ELEMENTS MAY BE
+C ARBITRARY.
+C
+C ON OUTPUT
+C
+C ORTR, ORTI, AND THE UPPER HESSENBERG PORTIONS OF HR AND HI
+C HAVE BEEN DESTROYED.
+C
+C WR AND WI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE EIGENVALUES. IF AN ERROR
+C EXIT IS MADE, THE EIGENVALUES SHOULD BE CORRECT
+C FOR INDICES IERR+1,...,N.
+C
+C ZR AND ZI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE EIGENVECTORS. THE EIGENVECTORS
+C ARE UNNORMALIZED. IF AN ERROR EXIT IS MADE, NONE OF
+C THE EIGENVECTORS HAS BEEN FOUND.
+C
+C IERR IS SET TO
+C ZERO FOR NORMAL RETURN,
+C J IF THE LIMIT OF 30*N ITERATIONS IS EXHAUSTED
+C WHILE THE J-TH EIGENVALUE IS BEING SOUGHT.
+C
+C CALLS PYCDIV FOR COMPLEX DIVISION.
+C CALLS PYCSRT FOR COMPLEX SQUARE ROOT.
+C CALLS PYTHAG FOR DSQRT(A*A + B*B) .
+C
+C QUESTIONS AND COMMENTS SHOULD BE DIRECTED TO BURTON S. GARBOW,
+C MATHEMATICS AND COMPUTER SCIENCE DIV, ARGONNE NATIONAL LABORATORY
+C
+C THIS VERSION DATED OCTOBER 1989.
+C
+C MESHED OVERFLOW CONTROL WITH VECTORS OF ISOLATED ROOTS (10/19/89 BSG)
+C MESHED OVERFLOW CONTROL WITH TRIANGULAR MULTIPLY (10/30/89 BSG)
+C
+
+ SUBROUTINE PYCMQ2(NM,N,LOW,IGH,ORTR,ORTI,HR,HI,WR,WI,ZR,ZI,IERR)
+
+ INTEGER I,J,K,L,M,N,EN,II,JJ,LL,NM,NN,IGH,IP1,
+ X ITN,ITS,LOW,LP1,ENM1,IEND,IERR
+ DOUBLE PRECISION HR(5,5),HI(5,5),WR(5),WI(5),ZR(5,5),ZI(5,5),
+ X ORTR(5),ORTI(5)
+ DOUBLE PRECISION SI,SR,TI,TR,XI,XR,YI,YR,ZZI,ZZR,NORM,TST1,TST2,
+ X PYTHAG
+
+ IERR = 0
+C .......... INITIALIZE EIGENVECTOR MATRIX ..........
+ DO 110 J = 1, N
+C
+ DO 100 I = 1, N
+ ZR(I,J) = 0.0D0
+ ZI(I,J) = 0.0D0
+ 100 CONTINUE
+ ZR(J,J) = 1.0D0
+ 110 CONTINUE
+C .......... FORM THE MATRIX OF ACCUMULATED TRANSFORMATIONS
+C FROM THE INFORMATION LEFT BY CORTH ..........
+ IEND = IGH - LOW - 1
+ IF (IEND.LT.0) GOTO 220
+ IF (IEND.EQ.0) GOTO 170
+C .......... FOR I=IGH-1 STEP -1 UNTIL LOW+1 DO -- ..........
+ DO 160 II = 1, IEND
+ I = IGH - II
+ IF (ORTR(I) .EQ. 0.0D0 .AND. ORTI(I) .EQ. 0.0D0) GOTO 160
+ IF (HR(I,I-1) .EQ. 0.0D0 .AND. HI(I,I-1) .EQ. 0.0D0) GOTO 160
+C .......... NORM BELOW IS NEGATIVE OF H FORMED IN CORTH ..........
+ NORM = HR(I,I-1) * ORTR(I) + HI(I,I-1) * ORTI(I)
+ IP1 = I + 1
+C
+ DO 120 K = IP1, IGH
+ ORTR(K) = HR(K,I-1)
+ ORTI(K) = HI(K,I-1)
+ 120 CONTINUE
+C
+ DO 150 J = I, IGH
+ SR = 0.0D0
+ SI = 0.0D0
+C
+ DO 130 K = I, IGH
+ SR = SR + ORTR(K) * ZR(K,J) + ORTI(K) * ZI(K,J)
+ SI = SI + ORTR(K) * ZI(K,J) - ORTI(K) * ZR(K,J)
+ 130 CONTINUE
+C
+ SR = SR / NORM
+ SI = SI / NORM
+C
+ DO 140 K = I, IGH
+ ZR(K,J) = ZR(K,J) + SR * ORTR(K) - SI * ORTI(K)
+ ZI(K,J) = ZI(K,J) + SR * ORTI(K) + SI * ORTR(K)
+ 140 CONTINUE
+C
+ 150 CONTINUE
+C
+ 160 CONTINUE
+C .......... CREATE REAL SUBDIAGONAL ELEMENTS ..........
+ 170 L = LOW + 1
+C
+ DO 210 I = L, IGH
+ LL = MIN0(I+1,IGH)
+ IF (HI(I,I-1) .EQ. 0.0D0) GOTO 210
+ NORM = PYTHAG(HR(I,I-1),HI(I,I-1))
+ YR = HR(I,I-1) / NORM
+ YI = HI(I,I-1) / NORM
+ HR(I,I-1) = NORM
+ HI(I,I-1) = 0.0D0
+C
+ DO 180 J = I, N
+ SI = YR * HI(I,J) - YI * HR(I,J)
+ HR(I,J) = YR * HR(I,J) + YI * HI(I,J)
+ HI(I,J) = SI
+ 180 CONTINUE
+C
+ DO 190 J = 1, LL
+ SI = YR * HI(J,I) + YI * HR(J,I)
+ HR(J,I) = YR * HR(J,I) - YI * HI(J,I)
+ HI(J,I) = SI
+ 190 CONTINUE
+C
+ DO 200 J = LOW, IGH
+ SI = YR * ZI(J,I) + YI * ZR(J,I)
+ ZR(J,I) = YR * ZR(J,I) - YI * ZI(J,I)
+ ZI(J,I) = SI
+ 200 CONTINUE
+C
+ 210 CONTINUE
+C .......... STORE ROOTS ISOLATED BY CBAL ..........
+ 220 DO 230 I = 1, N
+ IF (I .GE. LOW .AND. I .LE. IGH) GOTO 230
+ WR(I) = HR(I,I)
+ WI(I) = HI(I,I)
+ 230 CONTINUE
+C
+ EN = IGH
+ TR = 0.0D0
+ TI = 0.0D0
+ ITN = 30*N
+C .......... SEARCH FOR NEXT EIGENVALUE ..........
+ 240 IF (EN .LT. LOW) GOTO 430
+ ITS = 0
+ ENM1 = EN - 1
+C .......... LOOK FOR SINGLE SMALL SUB-DIAGONAL ELEMENT
+C FOR L=EN STEP -1 UNTIL LOW DO -- ..........
+ 250 DO 260 LL = LOW, EN
+ L = EN + LOW - LL
+ IF (L .EQ. LOW) GOTO 270
+ TST1 = DABS(HR(L-1,L-1)) + DABS(HI(L-1,L-1))
+ X + DABS(HR(L,L)) + DABS(HI(L,L))
+ TST2 = TST1 + DABS(HR(L,L-1))
+ IF (TST2 .EQ. TST1) GOTO 270
+ 260 CONTINUE
+C .......... FORM SHIFT ..........
+ 270 IF (L .EQ. EN) GOTO 420
+ IF (ITN .EQ. 0) GOTO 550
+ IF (ITS .EQ. 10 .OR. ITS .EQ. 20) GOTO 290
+ SR = HR(EN,EN)
+ SI = HI(EN,EN)
+ XR = HR(ENM1,EN) * HR(EN,ENM1)
+ XI = HI(ENM1,EN) * HR(EN,ENM1)
+ IF (XR .EQ. 0.0D0 .AND. XI .EQ. 0.0D0) GOTO 300
+ YR = (HR(ENM1,ENM1) - SR) / 2.0D0
+ YI = (HI(ENM1,ENM1) - SI) / 2.0D0
+ CALL PYCSRT(YR**2-YI**2+XR,2.0D0*YR*YI+XI,ZZR,ZZI)
+ IF (YR * ZZR + YI * ZZI .GE. 0.0D0) GOTO 280
+ ZZR = -ZZR
+ ZZI = -ZZI
+ 280 CALL PYCDIV(XR,XI,YR+ZZR,YI+ZZI,XR,XI)
+ SR = SR - XR
+ SI = SI - XI
+ GOTO 300
+C .......... FORM EXCEPTIONAL SHIFT ..........
+ 290 SR = DABS(HR(EN,ENM1)) + DABS(HR(ENM1,EN-2))
+ SI = 0.0D0
+C
+ 300 DO 310 I = LOW, EN
+ HR(I,I) = HR(I,I) - SR
+ HI(I,I) = HI(I,I) - SI
+ 310 CONTINUE
+C
+ TR = TR + SR
+ TI = TI + SI
+ ITS = ITS + 1
+ ITN = ITN - 1
+C .......... REDUCE TO TRIANGLE (ROWS) ..........
+ LP1 = L + 1
+C
+ DO 330 I = LP1, EN
+ SR = HR(I,I-1)
+ HR(I,I-1) = 0.0D0
+ NORM = PYTHAG(PYTHAG(HR(I-1,I-1),HI(I-1,I-1)),SR)
+ XR = HR(I-1,I-1) / NORM
+ WR(I-1) = XR
+ XI = HI(I-1,I-1) / NORM
+ WI(I-1) = XI
+ HR(I-1,I-1) = NORM
+ HI(I-1,I-1) = 0.0D0
+ HI(I,I-1) = SR / NORM
+C
+ DO 320 J = I, N
+ YR = HR(I-1,J)
+ YI = HI(I-1,J)
+ ZZR = HR(I,J)
+ ZZI = HI(I,J)
+ HR(I-1,J) = XR * YR + XI * YI + HI(I,I-1) * ZZR
+ HI(I-1,J) = XR * YI - XI * YR + HI(I,I-1) * ZZI
+ HR(I,J) = XR * ZZR - XI * ZZI - HI(I,I-1) * YR
+ HI(I,J) = XR * ZZI + XI * ZZR - HI(I,I-1) * YI
+ 320 CONTINUE
+C
+ 330 CONTINUE
+C
+ SI = HI(EN,EN)
+ IF (SI .EQ. 0.0D0) GOTO 350
+ NORM = PYTHAG(HR(EN,EN),SI)
+ SR = HR(EN,EN) / NORM
+ SI = SI / NORM
+ HR(EN,EN) = NORM
+ HI(EN,EN) = 0.0D0
+ IF (EN .EQ. N) GOTO 350
+ IP1 = EN + 1
+C
+ DO 340 J = IP1, N
+ YR = HR(EN,J)
+ YI = HI(EN,J)
+ HR(EN,J) = SR * YR + SI * YI
+ HI(EN,J) = SR * YI - SI * YR
+ 340 CONTINUE
+C .......... INVERSE OPERATION (COLUMNS) ..........
+ 350 DO 390 J = LP1, EN
+ XR = WR(J-1)
+ XI = WI(J-1)
+C
+ DO 370 I = 1, J
+ YR = HR(I,J-1)
+ YI = 0.0D0
+ ZZR = HR(I,J)
+ ZZI = HI(I,J)
+ IF (I .EQ. J) GOTO 360
+ YI = HI(I,J-1)
+ HI(I,J-1) = XR * YI + XI * YR + HI(J,J-1) * ZZI
+ 360 HR(I,J-1) = XR * YR - XI * YI + HI(J,J-1) * ZZR
+ HR(I,J) = XR * ZZR + XI * ZZI - HI(J,J-1) * YR
+ HI(I,J) = XR * ZZI - XI * ZZR - HI(J,J-1) * YI
+ 370 CONTINUE
+C
+ DO 380 I = LOW, IGH
+ YR = ZR(I,J-1)
+ YI = ZI(I,J-1)
+ ZZR = ZR(I,J)
+ ZZI = ZI(I,J)
+ ZR(I,J-1) = XR * YR - XI * YI + HI(J,J-1) * ZZR
+ ZI(I,J-1) = XR * YI + XI * YR + HI(J,J-1) * ZZI
+ ZR(I,J) = XR * ZZR + XI * ZZI - HI(J,J-1) * YR
+ ZI(I,J) = XR * ZZI - XI * ZZR - HI(J,J-1) * YI
+ 380 CONTINUE
+C
+ 390 CONTINUE
+C
+ IF (SI .EQ. 0.0D0) GOTO 250
+C
+ DO 400 I = 1, EN
+ YR = HR(I,EN)
+ YI = HI(I,EN)
+ HR(I,EN) = SR * YR - SI * YI
+ HI(I,EN) = SR * YI + SI * YR
+ 400 CONTINUE
+C
+ DO 410 I = LOW, IGH
+ YR = ZR(I,EN)
+ YI = ZI(I,EN)
+ ZR(I,EN) = SR * YR - SI * YI
+ ZI(I,EN) = SR * YI + SI * YR
+ 410 CONTINUE
+C
+ GOTO 250
+C .......... A ROOT FOUND ..........
+ 420 HR(EN,EN) = HR(EN,EN) + TR
+ WR(EN) = HR(EN,EN)
+ HI(EN,EN) = HI(EN,EN) + TI
+ WI(EN) = HI(EN,EN)
+ EN = ENM1
+ GOTO 240
+C .......... ALL ROOTS FOUND. BACKSUBSTITUTE TO FIND
+C VECTORS OF UPPER TRIANGULAR FORM ..........
+ 430 NORM = 0.0D0
+C
+ DO 440 I = 1, N
+C
+ DO 440 J = I, N
+ TR = DABS(HR(I,J)) + DABS(HI(I,J))
+ IF (TR .GT. NORM) NORM = TR
+ 440 CONTINUE
+C
+ IF (N .EQ. 1 .OR. NORM .EQ. 0.0D0) GOTO 560
+C .......... FOR EN=N STEP -1 UNTIL 2 DO -- ..........
+ DO 500 NN = 2, N
+ EN = N + 2 - NN
+ XR = WR(EN)
+ XI = WI(EN)
+ HR(EN,EN) = 1.0D0
+ HI(EN,EN) = 0.0D0
+ ENM1 = EN - 1
+C .......... FOR I=EN-1 STEP -1 UNTIL 1 DO -- ..........
+ DO 490 II = 1, ENM1
+ I = EN - II
+ ZZR = 0.0D0
+ ZZI = 0.0D0
+ IP1 = I + 1
+C
+ DO 450 J = IP1, EN
+ ZZR = ZZR + HR(I,J) * HR(J,EN) - HI(I,J) * HI(J,EN)
+ ZZI = ZZI + HR(I,J) * HI(J,EN) + HI(I,J) * HR(J,EN)
+ 450 CONTINUE
+C
+ YR = XR - WR(I)
+ YI = XI - WI(I)
+ IF (YR .NE. 0.0D0 .OR. YI .NE. 0.0D0) GOTO 470
+ TST1 = NORM
+ YR = TST1
+ 460 YR = 0.01D0 * YR
+ TST2 = NORM + YR
+ IF (TST2 .GT. TST1) GOTO 460
+ 470 CONTINUE
+ CALL PYCDIV(ZZR,ZZI,YR,YI,HR(I,EN),HI(I,EN))
+C .......... OVERFLOW CONTROL ..........
+ TR = DABS(HR(I,EN)) + DABS(HI(I,EN))
+ IF (TR .EQ. 0.0D0) GOTO 490
+ TST1 = TR
+ TST2 = TST1 + 1.0D0/TST1
+ IF (TST2 .GT. TST1) GOTO 490
+ DO 480 J = I, EN
+ HR(J,EN) = HR(J,EN)/TR
+ HI(J,EN) = HI(J,EN)/TR
+ 480 CONTINUE
+C
+ 490 CONTINUE
+C
+ 500 CONTINUE
+C .......... END BACKSUBSTITUTION ..........
+C .......... VECTORS OF ISOLATED ROOTS ..........
+ DO 520 I = 1, N
+ IF (I .GE. LOW .AND. I .LE. IGH) GOTO 520
+C
+ DO 510 J = I, N
+ ZR(I,J) = HR(I,J)
+ ZI(I,J) = HI(I,J)
+ 510 CONTINUE
+C
+ 520 CONTINUE
+C .......... MULTIPLY BY TRANSFORMATION MATRIX TO GIVE
+C VECTORS OF ORIGINAL FULL MATRIX.
+C FOR J=N STEP -1 UNTIL LOW DO -- ..........
+ DO 540 JJ = LOW, N
+ J = N + LOW - JJ
+ M = MIN0(J,IGH)
+C
+ DO 540 I = LOW, IGH
+ ZZR = 0.0D0
+ ZZI = 0.0D0
+C
+ DO 530 K = LOW, M
+ ZZR = ZZR + ZR(I,K) * HR(K,J) - ZI(I,K) * HI(K,J)
+ ZZI = ZZI + ZR(I,K) * HI(K,J) + ZI(I,K) * HR(K,J)
+ 530 CONTINUE
+C
+ ZR(I,J) = ZZR
+ ZI(I,J) = ZZI
+ 540 CONTINUE
+C
+ GOTO 560
+C .......... SET ERROR -- ALL EIGENVALUES HAVE NOT
+C CONVERGED AFTER 30*N ITERATIONS ..........
+ 550 IERR = EN
+ 560 RETURN
+ END
+
+C*********************************************************************
+
+C...PYCDIV
+C...Auxiliary to PYCMQR
+C
+C COMPLEX DIVISION, (CR,CI) = (AR,AI)/(BR,BI)
+C
+
+ SUBROUTINE PYCDIV(AR,AI,BR,BI,CR,CI)
+
+ DOUBLE PRECISION AR,AI,BR,BI,CR,CI
+ DOUBLE PRECISION S,ARS,AIS,BRS,BIS
+
+ S = DABS(BR) + DABS(BI)
+ ARS = AR/S
+ AIS = AI/S
+ BRS = BR/S
+ BIS = BI/S
+ S = BRS**2 + BIS**2
+ CR = (ARS*BRS + AIS*BIS)/S
+ CI = (AIS*BRS - ARS*BIS)/S
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCSRT
+C...Auxiliary to PYCMQR
+C
+C (YR,YI) = COMPLEX DSQRT(XR,XI)
+C BRANCH CHOSEN SO THAT YR .GE. 0.0 AND SIGN(YI) .EQ. SIGN(XI)
+C
+
+ SUBROUTINE PYCSRT(XR,XI,YR,YI)
+
+ DOUBLE PRECISION XR,XI,YR,YI
+ DOUBLE PRECISION S,TR,TI,PYTHAG
+
+ TR = XR
+ TI = XI
+ S = DSQRT(0.5D0*(PYTHAG(TR,TI) + DABS(TR)))
+ IF (TR .GE. 0.0D0) YR = S
+ IF (TI .LT. 0.0D0) S = -S
+ IF (TR .LE. 0.0D0) YI = S
+ IF (TR .LT. 0.0D0) YR = 0.5D0*(TI/YI)
+ IF (TR .GT. 0.0D0) YI = 0.5D0*(TI/YR)
+ RETURN
+ END
+
+ DOUBLE PRECISION FUNCTION PYTHAG(A,B)
+ DOUBLE PRECISION A,B
+C
+C FINDS DSQRT(A**2+B**2) WITHOUT OVERFLOW OR DESTRUCTIVE UNDERFLOW
+C
+ DOUBLE PRECISION P,R,S,T,U
+ P = DMAX1(DABS(A),DABS(B))
+ IF (P .EQ. 0.0D0) GOTO 110
+ R = (DMIN1(DABS(A),DABS(B))/P)**2
+ 100 CONTINUE
+ T = 4.0D0 + R
+ IF (T .EQ. 4.0D0) GOTO 110
+ S = R/T
+ U = 1.0D0 + 2.0D0*S
+ P = U*P
+ R = (S/U)**2 * R
+ GOTO 100
+ 110 PYTHAG = P
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCBAL
+C...Auxiliary to PYEICG
+C
+C THIS SUBROUTINE IS A TRANSLATION OF THE ALGOL PROCEDURE
+C CBALANCE, WHICH IS A COMPLEX VERSION OF BALANCE,
+C NUM. MATH. 13, 293-304(1969) BY PARLETT AND REINSCH.
+C HANDBOOK FOR AUTO. COMP., VOL.II-LINEAR ALGEBRA, 315-326(1971).
+C
+C THIS SUBROUTINE BALANCES A COMPLEX MATRIX AND ISOLATES
+C EIGENVALUES WHENEVER POSSIBLE.
+C
+C ON INPUT
+C
+C NM MUST BE SET TO THE ROW DIMENSION OF TWO-DIMENSIONAL
+C ARRAY PARAMETERS AS DECLARED IN THE CALLING PROGRAM
+C DIMENSION STATEMENT.
+C
+C N IS THE ORDER OF THE MATRIX.
+C
+C AR AND AI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE COMPLEX MATRIX TO BE BALANCED.
+C
+C ON OUTPUT
+C
+C AR AND AI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE BALANCED MATRIX.
+C
+C LOW AND IGH ARE TWO INTEGERS SUCH THAT AR(I,J) AND AI(I,J)
+C ARE EQUAL TO ZERO IF
+C (1) I IS GREATER THAN J AND
+C (2) J=1,...,LOW-1 OR I=IGH+1,...,N.
+C
+C SCALE CONTAINS INFORMATION DETERMINING THE
+C PERMUTATIONS AND SCALING FACTORS USED.
+C
+C SUPPOSE THAT THE PRINCIPAL SUBMATRIX IN ROWS LOW THROUGH IGH
+C HAS BEEN BALANCED, THAT P(J) DENOTES THE INDEX INTERCHANGED
+C WITH J DURING THE PERMUTATION STEP, AND THAT THE ELEMENTS
+C OF THE DIAGONAL MATRIX USED ARE DENOTED BY D(I,J). THEN
+C SCALE(J) = P(J), FOR J = 1,...,LOW-1
+C = D(J,J) J = LOW,...,IGH
+C = P(J) J = IGH+1,...,N.
+C THE ORDER IN WHICH THE INTERCHANGES ARE MADE IS N TO IGH+1,
+C THEN 1 TO LOW-1.
+C
+C NOTE THAT 1 IS RETURNED FOR IGH IF IGH IS ZERO FORMALLY.
+C
+C THE ALGOL PROCEDURE EXC CONTAINED IN CBALANCE APPEARS IN
+C CBAL IN LINE. (NOTE THAT THE ALGOL ROLES OF IDENTIFIERS
+C K,L HAVE BEEN REVERSED.)
+C
+C ARITHMETIC IS REAL THROUGHOUT.
+C
+C QUESTIONS AND COMMENTS SHOULD BE DIRECTED TO BURTON S. GARBOW,
+C MATHEMATICS AND COMPUTER SCIENCE DIV, ARGONNE NATIONAL LABORATORY
+C
+C THIS VERSION DATED AUGUST 1983.
+C
+
+ SUBROUTINE PYCBAL(NM,N,AR,AI,LOW,IGH,SCALE)
+
+ INTEGER I,J,K,L,M,N,JJ,NM,IGH,LOW,IEXC
+ DOUBLE PRECISION AR(5,5),AI(5,5),SCALE(5)
+ DOUBLE PRECISION C,F,G,R,S,B2,RADIX
+ LOGICAL NOCONV
+
+ RADIX = 16.0D0
+C
+ B2 = RADIX * RADIX
+ K = 1
+ L = N
+ GOTO 150
+C .......... IN-LINE PROCEDURE FOR ROW AND
+C COLUMN EXCHANGE ..........
+ 100 SCALE(M) = J
+ IF (J .EQ. M) GOTO 130
+C
+ DO 110 I = 1, L
+ F = AR(I,J)
+ AR(I,J) = AR(I,M)
+ AR(I,M) = F
+ F = AI(I,J)
+ AI(I,J) = AI(I,M)
+ AI(I,M) = F
+ 110 CONTINUE
+C
+ DO 120 I = K, N
+ F = AR(J,I)
+ AR(J,I) = AR(M,I)
+ AR(M,I) = F
+ F = AI(J,I)
+ AI(J,I) = AI(M,I)
+ AI(M,I) = F
+ 120 CONTINUE
+C
+ 130 IF(IEXC.EQ.1) GOTO 140
+ IF(IEXC.EQ.2) GOTO 180
+C .......... SEARCH FOR ROWS ISOLATING AN EIGENVALUE
+C AND PUSH THEM DOWN ..........
+ 140 IF (L .EQ. 1) GOTO 320
+ L = L - 1
+C .......... FOR J=L STEP -1 UNTIL 1 DO -- ..........
+ 150 DO 170 JJ = 1, L
+ J = L + 1 - JJ
+C
+ DO 160 I = 1, L
+ IF (I .EQ. J) GOTO 160
+ IF (AR(J,I) .NE. 0.0D0 .OR. AI(J,I) .NE. 0.0D0) GOTO 170
+ 160 CONTINUE
+C
+ M = L
+ IEXC = 1
+ GOTO 100
+ 170 CONTINUE
+C
+ GOTO 190
+C .......... SEARCH FOR COLUMNS ISOLATING AN EIGENVALUE
+C AND PUSH THEM LEFT ..........
+ 180 K = K + 1
+C
+ 190 DO 210 J = K, L
+C
+ DO 200 I = K, L
+ IF (I .EQ. J) GOTO 200
+ IF (AR(I,J) .NE. 0.0D0 .OR. AI(I,J) .NE. 0.0D0) GOTO 210
+ 200 CONTINUE
+C
+ M = K
+ IEXC = 2
+ GOTO 100
+ 210 CONTINUE
+C .......... NOW BALANCE THE SUBMATRIX IN ROWS K TO L ..........
+ DO 220 I = K, L
+ 220 SCALE(I) = 1.0D0
+C .......... ITERATIVE LOOP FOR NORM REDUCTION ..........
+ 230 NOCONV = .FALSE.
+C
+ DO 310 I = K, L
+ C = 0.0D0
+ R = 0.0D0
+C
+ DO 240 J = K, L
+ IF (J .EQ. I) GOTO 240
+ C = C + DABS(AR(J,I)) + DABS(AI(J,I))
+ R = R + DABS(AR(I,J)) + DABS(AI(I,J))
+ 240 CONTINUE
+C .......... GUARD AGAINST ZERO C OR R DUE TO UNDERFLOW ..........
+ IF (C .EQ. 0.0D0 .OR. R .EQ. 0.0D0) GOTO 310
+ G = R / RADIX
+ F = 1.0D0
+ S = C + R
+ 250 IF (C .GE. G) GOTO 260
+ F = F * RADIX
+ C = C * B2
+ GOTO 250
+ 260 G = R * RADIX
+ 270 IF (C .LT. G) GOTO 280
+ F = F / RADIX
+ C = C / B2
+ GOTO 270
+C .......... NOW BALANCE ..........
+ 280 IF ((C + R) / F .GE. 0.95D0 * S) GOTO 310
+ G = 1.0D0 / F
+ SCALE(I) = SCALE(I) * F
+ NOCONV = .TRUE.
+C
+ DO 290 J = K, N
+ AR(I,J) = AR(I,J) * G
+ AI(I,J) = AI(I,J) * G
+ 290 CONTINUE
+C
+ DO 300 J = 1, L
+ AR(J,I) = AR(J,I) * F
+ AI(J,I) = AI(J,I) * F
+ 300 CONTINUE
+C
+ 310 CONTINUE
+C
+ IF (NOCONV) GOTO 230
+C
+ 320 LOW = K
+ IGH = L
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCBA2
+C...Auxiliary to PYEICG.
+C
+C THIS SUBROUTINE IS A TRANSLATION OF THE ALGOL PROCEDURE
+C CBABK2, WHICH IS A COMPLEX VERSION OF BALBAK,
+C NUM. MATH. 13, 293-304(1969) BY PARLETT AND REINSCH.
+C HANDBOOK FOR AUTO. COMP., VOL.II-LINEAR ALGEBRA, 315-326(1971).
+C
+C THIS SUBROUTINE FORMS THE EIGENVECTORS OF A COMPLEX GENERAL
+C MATRIX BY BACK TRANSFORMING THOSE OF THE CORRESPONDING
+C BALANCED MATRIX DETERMINED BY CBAL.
+C
+C ON INPUT
+C
+C NM MUST BE SET TO THE ROW DIMENSION OF TWO-DIMENSIONAL
+C ARRAY PARAMETERS AS DECLARED IN THE CALLING PROGRAM
+C DIMENSION STATEMENT.
+C
+C N IS THE ORDER OF THE MATRIX.
+C
+C LOW AND IGH ARE INTEGERS DETERMINED BY CBAL.
+C
+C SCALE CONTAINS INFORMATION DETERMINING THE PERMUTATIONS
+C AND SCALING FACTORS USED BY CBAL.
+C
+C M IS THE NUMBER OF EIGENVECTORS TO BE BACK TRANSFORMED.
+C
+C ZR AND ZI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE EIGENVECTORS TO BE
+C BACK TRANSFORMED IN THEIR FIRST M COLUMNS.
+C
+C ON OUTPUT
+C
+C ZR AND ZI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE TRANSFORMED EIGENVECTORS
+C IN THEIR FIRST M COLUMNS.
+C
+C QUESTIONS AND COMMENTS SHOULD BE DIRECTED TO BURTON S. GARBOW,
+C MATHEMATICS AND COMPUTER SCIENCE DIV, ARGONNE NATIONAL LABORATORY
+C
+C THIS VERSION DATED AUGUST 1983.
+C
+
+ SUBROUTINE PYCBA2(NM,N,LOW,IGH,SCALE,M,ZR,ZI)
+
+ INTEGER I,J,K,M,N,II,NM,IGH,LOW
+ DOUBLE PRECISION SCALE(5),ZR(5,5),ZI(5,5)
+ DOUBLE PRECISION S
+
+ IF (M .EQ. 0) GOTO 150
+ IF (IGH .EQ. LOW) GOTO 120
+C
+ DO 110 I = LOW, IGH
+ S = SCALE(I)
+C .......... LEFT HAND EIGENVECTORS ARE BACK TRANSFORMED
+C IF THE FOREGOING STATEMENT IS REPLACED BY
+C S=1.0D0/SCALE(I). ..........
+ DO 100 J = 1, M
+ ZR(I,J) = ZR(I,J) * S
+ ZI(I,J) = ZI(I,J) * S
+ 100 CONTINUE
+C
+ 110 CONTINUE
+C .......... FOR I=LOW-1 STEP -1 UNTIL 1,
+C IGH+1 STEP 1 UNTIL N DO -- ..........
+ 120 DO 140 II = 1, N
+ I = II
+ IF (I .GE. LOW .AND. I .LE. IGH) GOTO 140
+ IF (I .LT. LOW) I = LOW - II
+ K = SCALE(I)
+ IF (K .EQ. I) GOTO 140
+C
+ DO 130 J = 1, M
+ S = ZR(I,J)
+ ZR(I,J) = ZR(K,J)
+ ZR(K,J) = S
+ S = ZI(I,J)
+ ZI(I,J) = ZI(K,J)
+ ZI(K,J) = S
+ 130 CONTINUE
+C
+ 140 CONTINUE
+C
+ 150 RETURN
+ END
+
+C*********************************************************************
+
+C...PYCRTH
+C...Auxiliary to PYEICG.
+C
+C THIS SUBROUTINE IS A TRANSLATION OF A COMPLEX ANALOGUE OF
+C THE ALGOL PROCEDURE ORTHES, NUM. MATH. 12, 349-368(1968)
+C BY MARTIN AND WILKINSON.
+C HANDBOOK FOR AUTO. COMP., VOL.II-LINEAR ALGEBRA, 339-358(1971).
+C
+C GIVEN A COMPLEX GENERAL MATRIX, THIS SUBROUTINE
+C REDUCES A SUBMATRIX SITUATED IN ROWS AND COLUMNS
+C LOW THROUGH IGH TO UPPER HESSENBERG FORM BY
+C UNITARY SIMILARITY TRANSFORMATIONS.
+C
+C ON INPUT
+C
+C NM MUST BE SET TO THE ROW DIMENSION OF TWO-DIMENSIONAL
+C ARRAY PARAMETERS AS DECLARED IN THE CALLING PROGRAM
+C DIMENSION STATEMENT.
+C
+C N IS THE ORDER OF THE MATRIX.
+C
+C LOW AND IGH ARE INTEGERS DETERMINED BY THE BALANCING
+C SUBROUTINE CBAL. IF CBAL HAS NOT BEEN USED,
+C SET LOW=1, IGH=N.
+C
+C AR AND AI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE COMPLEX INPUT MATRIX.
+C
+C ON OUTPUT
+C
+C AR AND AI CONTAIN THE REAL AND IMAGINARY PARTS,
+C RESPECTIVELY, OF THE HESSENBERG MATRIX. INFORMATION
+C ABOUT THE UNITARY TRANSFORMATIONS USED IN THE REDUCTION
+C IS STORED IN THE REMAINING TRIANGLES UNDER THE
+C HESSENBERG MATRIX.
+C
+C ORTR AND ORTI CONTAIN FURTHER INFORMATION ABOUT THE
+C TRANSFORMATIONS. ONLY ELEMENTS LOW THROUGH IGH ARE USED.
+C
+C CALLS PYTHAG FOR DSQRT(A*A + B*B) .
+C
+C QUESTIONS AND COMMENTS SHOULD BE DIRECTED TO BURTON S. GARBOW,
+C MATHEMATICS AND COMPUTER SCIENCE DIV, ARGONNE NATIONAL LABORATORY
+C
+C THIS VERSION DATED AUGUST 1983.
+C
+
+ SUBROUTINE PYCRTH(NM,N,LOW,IGH,AR,AI,ORTR,ORTI)
+
+ INTEGER I,J,M,N,II,JJ,LA,MP,NM,IGH,KP1,LOW
+ DOUBLE PRECISION AR(5,5),AI(5,5),ORTR(5),ORTI(5)
+ DOUBLE PRECISION F,G,H,FI,FR,SCALE,PYTHAG
+
+ LA = IGH - 1
+ KP1 = LOW + 1
+ IF (LA .LT. KP1) GOTO 210
+C
+ DO 200 M = KP1, LA
+ H = 0.0D0
+ ORTR(M) = 0.0D0
+ ORTI(M) = 0.0D0
+ SCALE = 0.0D0
+C .......... SCALE COLUMN (ALGOL TOL THEN NOT NEEDED) ..........
+ DO 100 I = M, IGH
+ 100 SCALE = SCALE + DABS(AR(I,M-1)) + DABS(AI(I,M-1))
+C
+ IF (SCALE .EQ. 0.0D0) GOTO 200
+ MP = M + IGH
+C .......... FOR I=IGH STEP -1 UNTIL M DO -- ..........
+ DO 110 II = M, IGH
+ I = MP - II
+ ORTR(I) = AR(I,M-1) / SCALE
+ ORTI(I) = AI(I,M-1) / SCALE
+ H = H + ORTR(I) * ORTR(I) + ORTI(I) * ORTI(I)
+ 110 CONTINUE
+C
+ G = DSQRT(H)
+ F = PYTHAG(ORTR(M),ORTI(M))
+ IF (F .EQ. 0.0D0) GOTO 120
+ H = H + F * G
+ G = G / F
+ ORTR(M) = (1.0D0 + G) * ORTR(M)
+ ORTI(M) = (1.0D0 + G) * ORTI(M)
+ GOTO 130
+C
+ 120 ORTR(M) = G
+ AR(M,M-1) = SCALE
+C .......... FORM (I-(U*UT)/H) * A ..........
+ 130 DO 160 J = M, N
+ FR = 0.0D0
+ FI = 0.0D0
+C .......... FOR I=IGH STEP -1 UNTIL M DO -- ..........
+ DO 140 II = M, IGH
+ I = MP - II
+ FR = FR + ORTR(I) * AR(I,J) + ORTI(I) * AI(I,J)
+ FI = FI + ORTR(I) * AI(I,J) - ORTI(I) * AR(I,J)
+ 140 CONTINUE
+C
+ FR = FR / H
+ FI = FI / H
+C
+ DO 150 I = M, IGH
+ AR(I,J) = AR(I,J) - FR * ORTR(I) + FI * ORTI(I)
+ AI(I,J) = AI(I,J) - FR * ORTI(I) - FI * ORTR(I)
+ 150 CONTINUE
+C
+ 160 CONTINUE
+C .......... FORM (I-(U*UT)/H)*A*(I-(U*UT)/H) ..........
+ DO 190 I = 1, IGH
+ FR = 0.0D0
+ FI = 0.0D0
+C .......... FOR J=IGH STEP -1 UNTIL M DO -- ..........
+ DO 170 JJ = M, IGH
+ J = MP - JJ
+ FR = FR + ORTR(J) * AR(I,J) - ORTI(J) * AI(I,J)
+ FI = FI + ORTR(J) * AI(I,J) + ORTI(J) * AR(I,J)
+ 170 CONTINUE
+C
+ FR = FR / H
+ FI = FI / H
+C
+ DO 180 J = M, IGH
+ AR(I,J) = AR(I,J) - FR * ORTR(J) - FI * ORTI(J)
+ AI(I,J) = AI(I,J) + FR * ORTI(J) - FI * ORTR(J)
+ 180 CONTINUE
+C
+ 190 CONTINUE
+C
+ ORTR(M) = SCALE * ORTR(M)
+ ORTI(M) = SCALE * ORTI(M)
+ AR(M,M-1) = -G * AR(M,M-1)
+ AI(M,M-1) = -G * AI(M,M-1)
+ 200 CONTINUE
+C
+ 210 RETURN
+ END
+
+C*********************************************************************
+
+C...PYLDCM
+C...Auxiliary to PYSIGH, for technicolor corrections to QCD 2 -> 2
+C...processes.
+
+ SUBROUTINE PYLDCM(A,N,NP,INDX,D)
+ IMPLICIT NONE
+ INTEGER N,NP,INDX(N)
+ REAL*8 D,TINY
+ COMPLEX*16 A(NP,NP)
+ PARAMETER (TINY=1.0D-20)
+ INTEGER I,IMAX,J,K
+ REAL*8 AAMAX,VV(6),DUM
+ COMPLEX*16 SUM,DUMC
+
+ D=1D0
+ DO 110 I=1,N
+ AAMAX=0D0
+ DO 100 J=1,N
+ IF (ABS(A(I,J)).GT.AAMAX) AAMAX=ABS(A(I,J))
+ 100 CONTINUE
+ IF (AAMAX.EQ.0D0) CALL PYERRM(28,'(PYLDCM:) singular matrix')
+ VV(I)=1D0/AAMAX
+ 110 CONTINUE
+ DO 180 J=1,N
+ DO 130 I=1,J-1
+ SUM=A(I,J)
+ DO 120 K=1,I-1
+ SUM=SUM-A(I,K)*A(K,J)
+ 120 CONTINUE
+ A(I,J)=SUM
+ 130 CONTINUE
+ AAMAX=0D0
+ DO 150 I=J,N
+ SUM=A(I,J)
+ DO 140 K=1,J-1
+ SUM=SUM-A(I,K)*A(K,J)
+ 140 CONTINUE
+ A(I,J)=SUM
+ DUM=VV(I)*ABS(SUM)
+ IF (DUM.GE.AAMAX) THEN
+ IMAX=I
+ AAMAX=DUM
+ ENDIF
+ 150 CONTINUE
+ IF (J.NE.IMAX)THEN
+ DO 160 K=1,N
+ DUMC=A(IMAX,K)
+ A(IMAX,K)=A(J,K)
+ A(J,K)=DUMC
+ 160 CONTINUE
+ D=-D
+ VV(IMAX)=VV(J)
+ ENDIF
+ INDX(J)=IMAX
+ IF(ABS(A(J,J)).EQ.0D0) A(J,J)=DCMPLX(TINY,0D0)
+ IF(J.NE.N)THEN
+ DO 170 I=J+1,N
+ A(I,J)=A(I,J)/A(J,J)
+ 170 CONTINUE
+ ENDIF
+ 180 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYBKSB
+C...Auxiliary to PYSIGH, for technicolor corrections to QCD 2 -> 2
+C...processes.
+
+ SUBROUTINE PYBKSB(A,N,NP,INDX,B)
+ IMPLICIT NONE
+ INTEGER N,NP,INDX(N)
+ COMPLEX*16 A(NP,NP),B(N)
+ INTEGER I,II,J,LL
+ COMPLEX*16 SUM
+
+ II=0
+ DO 110 I=1,N
+ LL=INDX(I)
+ SUM=B(LL)
+ B(LL)=B(I)
+ IF (II.NE.0)THEN
+ DO 100 J=II,I-1
+ SUM=SUM-A(I,J)*B(J)
+ 100 CONTINUE
+ ELSE IF (ABS(SUM).NE.0D0) THEN
+ II=I
+ ENDIF
+ B(I)=SUM
+ 110 CONTINUE
+ DO 130 I=N,1,-1
+ SUM=B(I)
+ DO 120 J=I+1,N
+ SUM=SUM-A(I,J)*B(J)
+ 120 CONTINUE
+ B(I)=SUM/A(I,I)
+ 130 CONTINUE
+ RETURN
+ END
+
+C***********************************************************************
+
+C...PYWIDX
+C...Calculates full and partial widths of resonances.
+C....copy of PYWIDT, used for techniparticle widths
+
+ SUBROUTINE PYWIDX(KFLR,SH,WDTP,WDTE)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYSUBS/,/PYPARS/,/PYINT1/,
+ &/PYINT4/,/PYMSSM/,/PYTCSM/
+C...Local arrays and saved variables.
+ DIMENSION WDTP(0:400),WDTE(0:400,0:5),MOFSV(3,2),WIDWSV(3,2),
+ &WID2SV(3,2)
+ SAVE MOFSV,WIDWSV,WID2SV
+ DATA MOFSV/6*0/,WIDWSV/6*0D0/,WID2SV/6*0D0/
+
+C...Compressed code and sign; mass.
+ KFLA=IABS(KFLR)
+ KFLS=ISIGN(1,KFLR)
+ KC=PYCOMP(KFLA)
+ SHR=SQRT(SH)
+ PMR=PMAS(KC,1)
+
+C...Reset width information.
+ DO I=0,400
+ WDTP(I)=0D0
+ ENDDO
+
+C...Common electroweak and strong constants.
+ XW=PARU(102)
+ XWV=XW
+ IF(MSTP(8).GE.2) XW=1D0-(PMAS(24,1)/PMAS(23,1))**2
+ XW1=1D0-XW
+ AEM=PYALEM(SH)
+ IF(MSTP(8).GE.1) AEM=SQRT(2D0)*PARU(105)*PMAS(24,1)**2*XW/PARU(1)
+ AS=PYALPS(SH)
+ RADC=1D0+AS/PARU(1)
+
+ IF(KFLA.EQ.23) THEN
+C...Z0:
+ XWC=1D0/(16D0*XW*XW1)
+ FAC=(AEM*XWC/3D0)*SHR
+ 120 CONTINUE
+ DO 130 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 130
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(IABS(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 130
+ IF(I.LE.8) THEN
+C...Z0 -> q + qbar
+ EF=KCHG(I,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ FCOF=3D0*RADC
+ IF(I.GE.6.AND.MSTP(35).GE.1) FCOF=FCOF*PYHFTH(SH,SH*RM1,1D0)
+ ELSEIF(I.LE.16) THEN
+C...Z0 -> l+ + l-, nu + nubar
+ EF=KCHG(I+2,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*XWV
+ FCOF=1D0
+ ENDIF
+ BE34=SQRT(MAX(0D0,1D0-4D0*RM1))
+ WDTP(I)=FAC*FCOF*(VF**2*(1D0+2D0*RM1)+AF**2*(1D0-4D0*RM1))*
+ & BE34
+ WDTP(0)=WDTP(0)+WDTP(I)
+ 130 CONTINUE
+
+
+ ELSEIF(KFLA.EQ.24) THEN
+C...W+/-:
+ FAC=(AEM/(24D0*XW))*SHR
+ DO 140 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 140
+ RM1=PMAS(IABS(KFDP(IDC,1)),1)**2/SH
+ RM2=PMAS(IABS(KFDP(IDC,2)),1)**2/SH
+ IF(SQRT(RM1)+SQRT(RM2).GT.1D0) GOTO 140
+ WID2=1D0
+ IF(I.LE.16) THEN
+C...W+/- -> q + qbar'
+ FCOF=3D0*RADC*VCKM((I-1)/4+1,MOD(I-1,4)+1)
+ ELSEIF(I.LE.20) THEN
+C...W+/- -> l+/- + nu
+ FCOF=1D0
+ ENDIF
+ WDTP(I)=FAC*FCOF*(2D0-RM1-RM2-(RM1-RM2)**2)*
+ & SQRT(MAX(0D0,(1D0-RM1-RM2)**2-4D0*RM1*RM2))
+ WDTP(0)=WDTP(0)+WDTP(I)
+ 140 CONTINUE
+
+C.....V8 -> quark anti-quark
+ ELSEIF(KFLA.EQ.KTECHN+100021) THEN
+ FAC=AS/6D0*SHR
+ TANT3=RTCM(21)
+ IF(ITCM(2).EQ.0) THEN
+ IMDL=1
+ ELSEIF(ITCM(2).EQ.1) THEN
+ IMDL=2
+ ENDIF
+ DO 150 I=1,MDCY(KC,3)
+ IDC=I+MDCY(KC,2)-1
+ IF(MDME(IDC,1).LT.0) GOTO 150
+ PM1=PMAS(PYCOMP(KFDP(IDC,1)),1)
+ RM1=PM1**2/SH
+ IF(RM1.GT.0.25D0) GOTO 150
+ WID2=1D0
+ IF(I.EQ.5.OR.I.EQ.6.OR.IMDL.EQ.2) THEN
+ FMIX=1D0/TANT3**2
+ ELSE
+ FMIX=TANT3**2
+ ENDIF
+ WDTP(I)=FAC*(1D0+2D0*RM1)*SQRT(1D0-4D0*RM1)*FMIX
+ IF(I.EQ.6) WID2=WIDS(6,1)
+ WDTP(0)=WDTP(0)+WDTP(I)
+ 150 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVSF
+C...Calculates R-violating decays of sfermions.
+C...P. Z. Skands
+
+ SUBROUTINE PYRVSF(KFIN,XLAM,IDLAM,LKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+C...Local variables.
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3), PYCOMP
+ SAVE /PYMSRV/,/PYSSMT/,/PYMSSM/,/PYDAT2/
+
+C...IS R-VIOLATION ON ?
+ IF ((IMSS(51).GE.1).OR.(IMSS(52).GE.1).OR.(IMSS(53).GE.1)) THEN
+C...Mass eigenstate counter
+ ICNT=INT(KFIN/KSUSY1)
+C...SM KF code of SUSY particle
+ KFSM=KFIN-ICNT*KSUSY1
+C...Squared Sparticle Mass
+ SM=PMAS(PYCOMP(KFIN),1)**2
+C... Squared mass of top quark
+ SMT=PMAS(PYCOMP(6),1)**2
+C...IS L-VIOLATION ON ?
+ IF ((IMSS(51).GE.1).OR.(IMSS(52).GE.1)) THEN
+C...SLEPTON -> NU(BAR) + LEPTON and UBAR + D
+ IF(ICNT.NE.0.AND.(KFSM.EQ.11.OR.KFSM.EQ.13.OR.KFSM.EQ.15))
+ & THEN
+ K=INT((KFSM-9)/2)
+ DO 110 I=1,3
+ DO 100 J=1,3
+ IF(I.NE.J) THEN
+C...~e,~mu,~tau -> nu_I + lepton-_J
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)= 12 +2*(I-1)
+ IDLAM(LKNT,2)= 11 +2*(J-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ RM2=RVLAM(I,J,K)**2*SFMIX(KFSM,2*ICNT)**2 * SM
+ IF (IMSS(51).NE.0) XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+ 110 CONTINUE
+C...~e,~mu,~tau -> nu_Ibar + lepton-_K
+ J=INT((KFSM-9)/2)
+ DO 130 I=1,3
+ IF(I.NE.J) THEN
+ DO 120 K=1,3
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)=-12 -2*(I-1)
+ IDLAM(LKNT,2)= 11 +2*(K-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ RM2=RVLAM(I,J,K)**2*SFMIX(KFSM,2*ICNT-1)**2 * SM
+ IF (IMSS(51).NE.0) XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ 120 CONTINUE
+ ENDIF
+ 130 CONTINUE
+C...~e,~mu,~tau -> u_Jbar + d_K
+ I=INT((KFSM-9)/2)
+ DO 150 J=1,3
+ DO 140 K=1,3
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)=-2 -2*(J-1)
+ IDLAM(LKNT,2)= 1 +2*(K-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0
+ IF (IMSS(52).NE.0) THEN
+C...Use massive top quark
+ IF (IDLAM(LKNT,1).EQ.-6) THEN
+ RM2=3*RVLAMP(I,J,K)**2*SFMIX(KFSM,2*ICNT-1)**2
+ & * (SM-SMT)
+ XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,3)
+C...If no top quark, all decay products massless
+ ELSE
+ RM2=3*RVLAMP(I,J,K)**2*SFMIX(KFSM,2*ICNT-1)**2 * SM
+ XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+ ENDIF
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+ 140 CONTINUE
+ 150 CONTINUE
+ ENDIF
+C * SNEUTRINO -> LEPTON+ + LEPTON- and DBAR + D
+C...No right-handed neutrinos
+ IF(ICNT.EQ.1) THEN
+ IF(KFSM.EQ.12.OR.KFSM.EQ.14.OR.KFSM.EQ.16) THEN
+ J=INT((KFSM-10)/2)
+ DO 170 I=1,3
+ DO 160 K=1,3
+ IF (I.NE.J) THEN
+C...~nu_J -> lepton+_I + lepton-_K
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)=-11 -2*(I-1)
+ IDLAM(LKNT,2)= 11 +2*(K-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ RM2=RVLAM(I,J,K)**2 * SM
+ IF (IMSS(51).NE.0) XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+ 160 CONTINUE
+ 170 CONTINUE
+C...~nu_I -> dbar_J + d_K
+ I=INT((KFSM-10)/2)
+ DO 190 J=1,3
+ DO 180 K=1,3
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)=-1 -2*(J-1)
+ IDLAM(LKNT,2)= 1 +2*(K-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ RM2=3*RVLAMP(I,J,K)**2 * SM
+ IF (IMSS(52).NE.0) XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ 180 CONTINUE
+ 190 CONTINUE
+ ENDIF
+ ENDIF
+C * SDOWN -> NU(BAR) + D and LEPTON- + U
+ IF(ICNT.NE.0.AND.(KFSM.EQ.1.OR.KFSM.EQ.3.OR.KFSM.EQ.5)) THEN
+ J=INT((KFSM+1)/2)
+ DO 210 I=1,3
+ DO 200 K=1,3
+C...~d_J -> nu_Ibar + d_K
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)=-12 -2*(I-1)
+ IDLAM(LKNT,2)= 1 +2*(K-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ RM2=RVLAMP(I,J,K)**2*SFMIX(KFSM,2*ICNT-1)**2 * SM
+ IF (IMSS(52).NE.0) XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ 200 CONTINUE
+ 210 CONTINUE
+ K=INT((KFSM+1)/2)
+ DO 240 I=1,3
+ DO 230 J=1,3
+C...~d_K -> nu_I + d_J
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)= 12 +2*(I-1)
+ IDLAM(LKNT,2)= 1 +2*(J-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ RM2=RVLAMP(I,J,K)**2*SFMIX(KFSM,2*ICNT)**2 * SM
+ IF (IMSS(52).NE.0) XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+C...~d_K -> lepton_I- + u_J
+ 220 LKNT = LKNT+1
+ IDLAM(LKNT,1)= 11 +2*(I-1)
+ IDLAM(LKNT,2)= 2 +2*(J-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ IF (IMSS(52).NE.0) THEN
+C...Use massive top quark
+ IF (IDLAM(LKNT,2).EQ.6) THEN
+ RM2=RVLAMP(I,J,K)**2*SFMIX(KFSM,2*ICNT)**2*(SM-SMT)
+ XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,2)
+C...If no top quark, all decay products massless
+ ELSE
+ RM2=RVLAMP(I,J,K)**2*SFMIX(KFSM,2*ICNT)**2 * SM
+ XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+ ENDIF
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+ 230 CONTINUE
+ 240 CONTINUE
+ ENDIF
+C * SUP -> LEPTON+ + D
+ IF(ICNT.NE.0.AND.(KFSM.EQ.2.OR.KFSM.EQ.4.OR.KFSM.EQ.6)) THEN
+ J=NINT(KFSM/2.)
+ DO 260 I=1,3
+ DO 250 K=1,3
+C...~u_J -> lepton_I+ + d_K
+ LKNT = LKNT+1
+ IDLAM(LKNT,1)=-11 -2*(I-1)
+ IDLAM(LKNT,2)= 1 +2*(K-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+ RM2=RVLAMP(I,J,K)**2*SFMIX(KFSM,2*ICNT-1)**2 * SM
+ IF (IMSS(52).NE.0) XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ 250 CONTINUE
+ 260 CONTINUE
+ ENDIF
+ ENDIF
+C...BARYON NUMBER VIOLATING DECAYS
+ IF (IMSS(53).GE.1) THEN
+C * SUP -> DBAR + DBAR
+ IF(ICNT.NE.0.AND.(KFSM.EQ.2.OR.KFSM.EQ.4.OR.KFSM.EQ.6)) THEN
+ I = KFSM/2
+ DO 280 J=1,3
+ DO 270 K=1,3
+C...~u_I -> dbar_J + dbar_K
+ IF (J.LT.K) THEN
+C...(anti-) symmetry J <-> K.
+ LKNT = LKNT + 1
+ IDLAM(LKNT,1) = -1 -2*(J-1)
+ IDLAM(LKNT,2) = -1 -2*(K-1)
+ IDLAM(LKNT,3) = 0
+ XLAM(LKNT) = 0D0
+ RM2 = 2.*(RVLAMB(I,J,K)**2)
+ & * SFMIX(KFSM,2*ICNT)**2 * SM
+ XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT = LKNT-1
+ ENDIF
+ ENDIF
+ 270 CONTINUE
+ 280 CONTINUE
+ ENDIF
+C * SDOWN -> UBAR + DBAR
+ IF(ICNT.NE.0.AND.(KFSM.EQ.1.OR.KFSM.EQ.3.OR.KFSM.EQ.5)) THEN
+ K=(KFSM+1)/2
+ DO 300 I=1,3
+ DO 290 J=1,3
+C...LAMB coupling antisymmetric in J and K.
+ IF (J.NE.K) THEN
+C...~d_K -> ubar_I + dbar_K
+ LKNT = LKNT + 1
+ IDLAM(LKNT,1)= -2 -2*(I-1)
+ IDLAM(LKNT,2)= -1 -2*(J-1)
+ IDLAM(LKNT,3)= 0
+ XLAM(LKNT)=0D0
+C...Use massive top quark
+ IF (IDLAM(LKNT,1).EQ.-6) THEN
+ RM2=2*RVLAMB(I,J,K)**2*SFMIX(KFSM,2*ICNT)**2*(SM-SMT
+ & )
+ XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,3)
+C...If no top quark, all decay products massless
+ ELSE
+ RM2=2*RVLAMB(I,J,K)**2*SFMIX(KFSM,2*ICNT)**2 * SM
+ XLAM(LKNT) =
+ & PYRVSB(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),RM2,4)
+ ENDIF
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+ 290 CONTINUE
+ 300 CONTINUE
+ ENDIF
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVNE
+C...Calculates R-violating neutralino decay widths (pure 1->3 parts).
+C...P. Z. Skands
+
+ SUBROUTINE PYRVNE(KFIN,XLAM,IDLAM,LKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+C...Local variables.
+ COMMON/PYRVNV/AB(2,16,2),RMS(0:3),RES(6,2),INTRES(6,3),IDR,IDR2
+ & ,DCMASS,KFR(3)
+ DOUBLE PRECISION XLAM(0:400)
+ DOUBLE PRECISION ZPMIX(4,4), NMIX(4,4), RMQ(6)
+ INTEGER IDLAM(400,3), PYCOMP
+ LOGICAL DCMASS
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/,/PYMSRV/,/PYRVNV/
+
+C...R-VIOLATING DECAYS
+ IF ((IMSS(51).GE.1).OR.(IMSS(52).GE.1).OR.(IMSS(53).GE.1)) THEN
+ KFSM=KFIN-KSUSY1
+ IF(KFSM.EQ.22.OR.KFSM.EQ.23.OR.KFSM.EQ.25.OR.KFSM.EQ.35) THEN
+C...WHICH NEUTRALINO ?
+ NCHI=1
+ IF (KFSM.EQ.23) NCHI=2
+ IF (KFSM.EQ.25) NCHI=3
+ IF (KFSM.EQ.35) NCHI=4
+C...SIGN OF MASS (Opposite convention as HERWIG)
+ ISM = 1
+ IF (SMZ(NCHI).LT.0D0) ISM = -ISM
+
+C...Useful parameters for the calculation of the A and B constants.
+ WMASS = PMAS(PYCOMP(24),1)
+ ECHG = 2*SQRT(PARU(103)*PARU(1))
+ COSB=1/(SQRT(1+RMSS(5)**2))
+ SINB=RMSS(5)/SQRT(1+RMSS(5)**2)
+ COSW=SQRT(1-PARU(102))
+ SINW=SQRT(PARU(102))
+ GW=2D0*SQRT(PARU(103)*PARU(1))/SINW
+C...Run quark masses to neutralino mass squared (for Higgs-type
+C...couplings)
+ SQMCHI=PMAS(PYCOMP(KFIN),1)**2
+ DO 100 I=1,6
+ RMQ(I)=PYMRUN(I,SQMCHI)
+ 100 CONTINUE
+C...EXPRESS NEUTRALINO MIXING IN (photino,Zino,~H_u,~H_d) BASIS
+ DO 110 NCHJ=1,4
+ ZPMIX(NCHJ,1)= ZMIX(NCHJ,1)*COSW+ZMIX(NCHJ,2)*SINW
+ ZPMIX(NCHJ,2)=-ZMIX(NCHJ,1)*SINW+ZMIX(NCHJ,2)*COSW
+ ZPMIX(NCHJ,3)= ZMIX(NCHJ,3)
+ ZPMIX(NCHJ,4)= ZMIX(NCHJ,4)
+ 110 CONTINUE
+ C1=GW*ZPMIX(NCHI,3)/(2D0*COSB*WMASS)
+ C1U=GW*ZPMIX(NCHI,4)/(2D0*SINB*WMASS)
+ C2=ECHG*ZPMIX(NCHI,1)
+ C3=GW*ZPMIX(NCHI,2)/COSW
+ EU=2D0/3D0
+ ED=-1D0/3D0
+C... AB(x,y,z):
+C x=1-2 : Select A or B constant (1:A ; 2:B)
+C y=1-16 : Sparticle's SM code (1-6:d,u,s,c,b,t ;
+C 11-16:e,nu_e,mu,...)
+C z=1-2 : Mass eigenstate number
+C...CALCULATE COUPLINGS
+ DO 120 I = 11,15,2
+ CMS=PMAS(PYCOMP(I),1)
+C...Intermediate sleptons
+ AB(1,I,1)=ISM*(CMS*C1*SFMIX(I,1) + SFMIX(I,2)
+ & *(C2-C3*SINW**2))
+ AB(1,I,2)=ISM*(CMS*C1*SFMIX(I,3) + SFMIX(I,4)
+ & *(C2-C3*SINW**2))
+ AB(2,I,1)= CMS*C1*SFMIX(I,2) - SFMIX(I,1)*(C2+C3*(5D-1-SINW
+ & **2))
+ AB(2,I,2)=CMS*C1*SFMIX(I,4) - SFMIX(I,3)*(C2+C3*(5D-1-SINW
+ & **2))
+C...Inermediate sneutrinos
+ AB(1,I+1,1)=0D0
+ AB(2,I+1,1)=5D-1*C3
+ AB(1,I+1,2)=0D0
+ AB(2,I+1,2)=0D0
+C...Inermediate sdown
+ J=I-10
+ CMS=RMQ(J)
+ AB(1,J,1)=ISM*(CMS*C1*SFMIX(J,1) - SFMIX(J,2)
+ & *ED*(C2-C3*SINW**2))
+ AB(1,J,2)=ISM*(CMS*C1*SFMIX(J,3) - SFMIX(J,4)
+ & *ED*(C2-C3*SINW**2))
+ AB(2,J,1)=CMS*C1*SFMIX(J,2) + SFMIX(J,1)
+ & *(ED*C2-C3*(1D0/2D0+ED*SINW**2))
+ AB(2,J,2)=CMS*C1*SFMIX(J,4) + SFMIX(J,3)
+ & *(ED*C2-C3*(1D0/2D0+ED*SINW**2))
+C...Inermediate sup
+ J=J+1
+ CMS=RMQ(J)
+ AB(1,J,1)=ISM*(CMS*C1U*SFMIX(J,1) - SFMIX(J,2)
+ & *EU*(C2-C3*SINW**2))
+ AB(1,J,2)=ISM*(CMS*C1U*SFMIX(J,3) - SFMIX(J,4)
+ & *EU*(C2-C3*SINW**2))
+ AB(2,J,1)=CMS*C1U*SFMIX(J,2) + SFMIX(J,1)
+ & *(EU*C2+C3*(1D0/2D0-EU*SINW**2))
+ AB(2,J,2)=CMS*C1U*SFMIX(J,4) + SFMIX(J,3)
+ & *(EU*C2+C3*(1D0/2D0-EU*SINW**2))
+ 120 CONTINUE
+
+ IF (IMSS(51).GE.1) THEN
+C...LAMBDA COUPLINGS (LLE TYPE R-VIOLATION)
+C * CHI0_I -> NUBAR_I + LEPTON+_J + lEPTON-_K.
+C...STEP IN I,J,K USING SINGLE COUNTER
+ DO 130 ISC=0,26
+C...LAMBDA COUPLING ASYM IN I,J
+ IF(MOD(ISC/9,3).NE.MOD(ISC/3,3)) THEN
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-12 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) =-11 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 11 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = RVLAM(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1
+ & ,MOD(ISC,3)+1)**2
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,2).EQ.-15.OR.IDLAM(LKNT,3).EQ.15)
+ & DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=-IDLAM(LKNT,1)
+ KFR(2)=-IDLAM(LKNT,2)
+ KFR(3)=-IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...Charge conjugate mode.
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ XLAM(LKNT)=XLAM(LKNT-1)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-2
+ ENDIF
+ ENDIF
+ 130 CONTINUE
+ ENDIF
+
+ IF (IMSS(52).GE.1) THEN
+C...LAMBDA' COUPLINGS. (LQD TYPE R-VIOLATION)
+C * CHI0 -> NUBAR_I + DBAR_J + D_K
+ DO 140 ISC=0,26
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-12 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -1 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 1 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = 3 * RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1
+ & ,MOD(ISC,3)+1)**2
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,2).EQ.-5.OR.IDLAM(LKNT,3).EQ.5)
+ & DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=-IDLAM(LKNT,1)
+ KFR(2)=-IDLAM(LKNT,2)
+ KFR(3)=-IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...Charge conjugate mode.
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ XLAM(LKNT)=XLAM(LKNT-1)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-2
+ ENDIF
+
+C * CHI0 -> LEPTON_I+ + UBAR_J + D_K
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-11 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -2 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 1 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = 3 * RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1
+ & ,MOD(ISC,3)+1)**2
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,1).EQ.-15.OR.IDLAM(LKNT,2).EQ.-6
+ & .OR.IDLAM(LKNT,3).EQ.5) DCMASS=.TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=-IDLAM(LKNT,1)
+ KFR(2)=-IDLAM(LKNT,2)
+ KFR(3)=-IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...Charge conjugate mode.
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ XLAM(LKNT)=XLAM(LKNT-1)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-2
+ ENDIF
+ 140 CONTINUE
+ ENDIF
+
+ IF (IMSS(53).GE.1) THEN
+C...LAMBDA'' COUPLINGS. (UDD TYPE R-VIOLATION)
+C * CHI0 -> UBAR_I + DBAR_J + DBAR_K
+ DO 150 ISC=0,26
+C...Symmetry J<->K. Also, LAMB antisymmetric in J and K, so no J=K.
+ IF (MOD(ISC/3,3).LT.MOD(ISC,3)) THEN
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) = -2 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -1 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = -1 -2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = 6. * RVLAMB(MOD(ISC/9,3)+1,MOD(ISC/3,3)
+ & +1,MOD(ISC,3)+1)**2
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,1).EQ.-6.OR.IDLAM(LKNT,2).EQ.-5
+ & .OR.IDLAM(LKNT,3).EQ.-5) DCMASS=.TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = IDLAM(LKNT,1)
+ KFR(2) = IDLAM(LKNT,2)
+ KFR(3) = IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...Charge conjugate mode.
+ LKNT=LKNT+1
+ IDLAM(LKNT,1)=-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2)=-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3)=-IDLAM(LKNT-1,3)
+ XLAM(LKNT)=XLAM(LKNT-1)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-2
+ ENDIF
+ ENDIF
+ 150 CONTINUE
+ ENDIF
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVCH
+C...Calculates R-violating chargino decay widths.
+C...P. Z. Skands
+
+ SUBROUTINE PYRVCH(KFIN,XLAM,IDLAM,LKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+C...Local variables.
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3), PYCOMP
+C...Information from main routine to PYRVGW
+ COMMON/PYRVNV/AB(2,16,2),RMS(0:3),RES(6,2),INTRES(6,3),IDR,IDR2
+ & ,DCMASS,KFR(3)
+C...Auxiliary variables needed for BV (RV Gauge STOre)
+ COMMON/RVGSTO/XRESI,XRESJ,XRESK,XRESIJ,XRESIK,XRESJK,RVLIJK,RVLKIJ
+ & ,RVLJKI,RVLJIK
+C...Running quark masses
+ DOUBLE PRECISION RMQ(6)
+C...Decay product masses on/off
+ LOGICAL DCMASS
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/,/PYMSRV/,/PYRVNV/,
+ & /RVGSTO/
+
+
+C...IF R-VIOLATION ON.
+ IF ((IMSS(51).GE.1).OR.(IMSS(52).GE.1).OR.(IMSS(53).GE.1)) THEN
+ KFSM=KFIN-KSUSY1
+ IF(KFSM.EQ.24.OR.KFSM.EQ.37) THEN
+C...WHICH CHARGINO ?
+ NCHI = 1
+ IF (KFSM.EQ.37) NCHI = 2
+
+C...Useful parameters for calculating the A and B constants.
+C...SIGN OF MASS (Opposite convention as HERWIG)
+ ISM = 1
+ IF (SMW(NCHI).LT.0D0) ISM = -1
+ WMASS = PMAS(PYCOMP(24),1)
+ COSB = 1/(SQRT(1+RMSS(5)**2))
+ SINB = RMSS(5)/SQRT(1+RMSS(5)**2)
+ GW2 = 4*PARU(103)*PARU(1)/PARU(102)
+ C1U = UMIX(NCHI,2)/(SQRT(2D0)*COSB*WMASS)
+ C1V = VMIX(NCHI,2)/(SQRT(2D0)*SINB*WMASS)
+ C2 = UMIX(NCHI,1)
+ C3 = VMIX(NCHI,1)
+C...Running masses at Q^2=MCHI^2.
+ SQMCHI = PMAS(PYCOMP(KFSM),1)**2
+ DO 100 I=1,6
+ RMQ(I)=PYMRUN(I,SQMCHI)
+ 100 CONTINUE
+
+C... AB(x,y,z) coefficients:
+C x=1-2 : A or B coefficient (1:A ; 2:B)
+C y=1-16 : Sparticle's SM code (1-6:d,u,s,c,b,t ;
+C 11-16:e,nu_e,mu,...)
+C z=1-2 : Mass eigenstate number
+ DO 110 I = 11,15,2
+C...Intermediate sleptons
+ AB(1,I,1) = 0D0
+ AB(1,I,2) = 0D0
+ AB(2,I,1) = -PMAS(PYCOMP(I),1)*C1U*SFMIX(I,2) +
+ & SFMIX(I,1)*C2
+ AB(2,I,2) = -PMAS(PYCOMP(I),1)*C1U*SFMIX(I,4) +
+ & SFMIX(I,3)*C2
+C...Intermediate sneutrinos
+ AB(1,I+1,1) = -PMAS(PYCOMP(I),1)*C1U
+ AB(1,I+1,2) = 0D0
+ AB(2,I+1,1) = ISM*C3
+ AB(2,I+1,2) = 0D0
+C...Intermediate sdown
+ J=I-10
+ AB(1,J,1) = -RMQ(J+1)*C1V*SFMIX(J,1)
+ AB(1,J,2) = -RMQ(J+1)*C1V*SFMIX(J,3)
+ AB(2,J,1) = -ISM*(RMQ(J)*C1U*SFMIX(J,2) - SFMIX(J,1)*C2)
+ AB(2,J,2) = -ISM*(RMQ(J)*C1U*SFMIX(J,4) - SFMIX(J,3)*C2)
+C...Intermediate sup
+ J=J+1
+ AB(1,J,1) = -RMQ(J-1)*C1U*SFMIX(J,1)
+ AB(1,J,2) = -RMQ(J-1)*C1U*SFMIX(J,3)
+ AB(2,J,1) = -ISM*(RMQ(J)*C1V*SFMIX(J,2) - SFMIX(J,1)*C3)
+ AB(2,J,2) = -ISM*(RMQ(J)*C1V*SFMIX(J,4) - SFMIX(J,3)*C3)
+ 110 CONTINUE
+
+C...LLE TYPE R-VIOLATION
+ IF (IMSS(51).GE.1) THEN
+C...LOOP OVER DECAY MODES
+ DO 140 ISC=0,26
+
+C...CHI+ -> NUBAR_I + LEPTON+_J + NU_K.
+ IF(MOD(ISC/9,3).NE.MOD(ISC/3,3)) THEN
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) = -12 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -11 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 12 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = GW2 * 5D-1 *
+ & RVLAM(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)
+ & **2
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,2).EQ.-15) DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K).
+ KFR(1) = 0
+ KFR(2) = 0
+ KFR(3) = -IDLAM(LKNT,3)+1
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+
+C * CHI+ -> NU_I + NU_J + LEPTON+_K. (NOTE: SYMM. IN I AND J)
+ 120 IF (MOD(ISC/9,3).LT.MOD(ISC/3,3)) THEN
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) = 12 +2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = 12 +2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) =-11 -2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = GW2 * 5D-1 *
+ & RVLAM(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)**2
+C...I,J SYMMETRY => FACTOR 2
+ RVLAMC=2*RVLAMC
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,3).EQ.-15) DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=IDLAM(LKNT,1)-1
+ KFR(2)=IDLAM(LKNT,2)-1
+ KFR(3)=0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ 130 ENDIF
+
+C * CHI+ -> LEPTON+_I + LEPTON+_J + LEPTON-_K
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-11 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) =-11 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 11 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = GW2 * 5D-1 *
+ & RVLAM(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)**2
+C...I,J SYMMETRY => FACTOR 2
+ RVLAMC=2*RVLAMC
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,1).EQ.-15.OR.IDLAM(LKNT,2).EQ.-15
+ & .OR.IDLAM(LKNT,3).EQ.15) DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) =-IDLAM(LKNT,1)+1
+ KFR(2) =-IDLAM(LKNT,2)+1
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+ 140 CONTINUE
+ ENDIF
+
+C...LQD TYPE R-VIOLATION
+ IF (IMSS(52).GE.1) THEN
+C...LOOP OVER DECAY MODES
+ DO 180 ISC=0,26
+
+C...CHI+ -> NUBAR_I + DBAR_J + U_K
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-12 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -1 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 2 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = 3. * GW2 * 5D-1 *
+ & RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)**2
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,2).EQ.-5.OR.IDLAM(LKNT,3).EQ.6)
+ & DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=0
+ KFR(2)=0
+ KFR(3)=-IDLAM(LKNT,3)+1
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+
+C * CHI+ -> LEPTON+_I + UBAR_J + U_K.
+ 150 LKNT = LKNT+1
+ IDLAM(LKNT,1) =-11 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -2 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 2 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = 3. * GW2 * 5D-1 *
+ & RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)**2
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,1).EQ.-11.OR.IDLAM(LKNT,2).EQ.-6
+ & .OR.IDLAM(LKNT,3).EQ.6) DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=0
+ KFR(2)=0
+ KFR(3)=-IDLAM(LKNT,3)+1
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+
+C * CHI+ -> LEPTON+_I + DBAR_J + D_K.
+ 160 LKNT = LKNT+1
+ IDLAM(LKNT,1) =-11 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -1 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 1 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = 3. * GW2 * 5D-1 *
+ & RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)**2
+ DCMASS = .FALSE.
+ IF (IDLAM(LKNT,1).EQ.-15.OR.IDLAM(LKNT,2).EQ.-5
+ & .OR.IDLAM(LKNT,3).EQ.5) DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=-IDLAM(LKNT,1)+1
+ KFR(2)=-IDLAM(LKNT,2)+1
+ KFR(3)=0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+
+C * CHI+ -> NU_I + U_J + DBAR_K.
+ 170 LKNT = LKNT+1
+ IDLAM(LKNT,1) = 12 +2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = 2 +2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = -1 -2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ DCMASS = .FALSE.
+ RVLAMC = 3. * GW2 * 5D-1 *
+ & RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)**2
+ IF (IDLAM(LKNT,2).EQ.6.OR.IDLAM(LKNT,3).EQ.-5)
+ & DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1)=IDLAM(LKNT,1)-1
+ KFR(2)=IDLAM(LKNT,2)-1
+ KFR(3)=0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+
+ 180 CONTINUE
+ ENDIF
+
+C...UDD TYPE R-VIOLATION
+C...These decays need special treatment since more than one BV coupling
+C...contributes (with interference). Consider e.g. (symbolically)
+C |M|^2 = |l''_{ijk}|^2*(PYRVI1(RES_I) + PYRVI2(RES_I))
+C +|l''_{jik}|^2*(PYRVI1(RES_J) + PYRVI2(RES_J))
+C +l''_{ijk}*l''_{jik}*PYRVI3(PYRVI4(RES_I,RES_J))
+C...The problem is that a single call to PYRVGW would evaluate all
+C...these terms and sum them, but without the different couplings. The
+C...way out is to call PYRVGW three times, once for the first line, once
+C...for the second line, and then once for all the lines (it is
+C...impossible to get just the last line out) without multiplying by
+C...couplings. The last line is then obtained as the result of the third
+C...call minus the results of the two first calls. Each term is then
+C...multiplied by its respective coupling before the whole thing is
+C...summed up in XLAM.
+C...Note that with three interfering resonances, this procedure becomes
+C...more complicated, as can be seen in the CHI+ -> 3*DBAR mode.
+
+ IF (IMSS(53).GE.1) THEN
+C...LOOP OVER DECAY MODES
+ DO 190 ISC=1,25
+
+C...CHI+ -> U_I + U_J + D_K
+C...Decay mode I<->J symmetric.
+ IF (MOD(ISC/9,3).LE.MOD(ISC/3,3).AND.ISC.NE.13) THEN
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) = 2 +2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = 2 +2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 1 +2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC= 6. * GW2 * 5D-1
+ RVLJIK= RVLAMB(MOD(ISC/3,3)+1,MOD(ISC/9,3)+1,MOD(ISC,3)
+ & +1)
+ RVLIJK= RVLAMB(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)
+ & +1)
+ IF (MOD(ISC/9,3).EQ.MOD(ISC/3,3)) RVLAMC = 5D-1
+ & * RVLAMC
+ DCMASS=.FALSE.
+ IF (IDLAM(LKNT,1).EQ.6.OR.IDLAM(LKNT,2).EQ.6
+ & .OR.IDLAM(LKNT,3).EQ.5) DCMASS =.TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = -IDLAM(LKNT,1)+1
+ KFR(2) = 0
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESI)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = -IDLAM(LKNT,2)+1
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESJ)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = -IDLAM(LKNT,1)+1
+ KFR(2) = -IDLAM(LKNT,2)+1
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESIJ)
+ IF (ABS((XRESI+XRESJ)/XRESIJ-1.).GT.1D-4) THEN
+ XRESIJ = XRESIJ-XRESI-XRESJ
+ ELSE
+ XRESIJ = 0D0
+ ENDIF
+C...CALCULATE TOTAL WIDTH
+ XLAM(LKNT) = RVLJIK**2 * XRESI + RVLIJK**2 * XRESJ
+ & + RVLJIK*RVLIJK * XRESIJ
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+C...CHI+ -> DBAR_I + DBAR_J + DBAR_K
+C...Symmetry I<->J<->K.
+ IF ((MOD(ISC/9,3).LE.MOD(ISC/3,3)).AND.(MOD(ISC/3,3).LE
+ & .MOD(ISC,3)).AND.ISC.NE.13) THEN
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) = -1 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -1 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = -1 -2*MOD(ISC,3)
+ XLAM(LKNT) = 0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = 6. * GW2 * 5D-1
+ RVLIJK = RVLAMB(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)
+ & +1)
+ RVLKIJ = RVLAMB(MOD(ISC,3)+1,MOD(ISC/9,3)+1,MOD(ISC/3,3)
+ & +1)
+ RVLJKI = RVLAMB(MOD(ISC/3,3)+1,MOD(ISC,3)+1,MOD(ISC/9,3)
+ & +1)
+ DCMASS = .FALSE.
+ IF (IDLAM(LKNT,1).EQ.-5.OR.IDLAM(LKNT,2).EQ.-5
+ & .OR.IDLAM(LKNT,3).EQ.-5) DCMASS = .TRUE.
+C...Collect symmetry factors
+ IF (MOD(ISC/9,3).EQ.MOD(ISC/3,3).OR.MOD(ISC/3,3).EQ
+ & .MOD(ISC,3).OR.MOD(ISC/9,3).EQ.MOD(ISC,3))
+ & RVLAMC = 5D-1 * RVLAMC
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = IDLAM(LKNT,1)-1
+ KFR(2) = 0
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESI)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = IDLAM(LKNT,2)-1
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESJ)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = 0
+ KFR(3) = IDLAM(LKNT,3)-1
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESK)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = IDLAM(LKNT,1)-1
+ KFR(2) = IDLAM(LKNT,2)-1
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESIJ)
+ IF (ABS(XRESIJ/(XRESI+XRESJ)-1.).GT.1D-4) THEN
+ XRESIJ = XRESI+XRESJ-XRESIJ
+ ELSE
+ XRESIJ = 0D0
+ ENDIF
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = IDLAM(LKNT,2)-1
+ KFR(3) = IDLAM(LKNT,3)-1
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESJK)
+ IF (ABS(XRESJK/(XRESJ+XRESK)-1.).GT.1D-4) THEN
+ XRESJK = XRESJ+XRESK-XRESJK
+ ELSE
+ XRESJK = 0D0
+ ENDIF
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = IDLAM(LKNT,1)-1
+ KFR(2) = 0
+ KFR(3) = IDLAM(LKNT,3)-1
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),
+ & IDLAM(LKNT,3),XRESIK)
+ IF (ABS(XRESIK/(XRESI+XRESK)-1.).GT.1D-4) THEN
+ XRESIK = XRESI+XRESK-XRESIK
+ ELSE
+ XRESIK = 0D0
+ ENDIF
+C...CALCULATE TOTAL WIDTH
+ XLAM(LKNT) =
+ & RVLIJK**2 * XRESI
+ & + RVLJKI**2 * XRESJ
+ & + RVLKIJ**2 * XRESK
+ & + RVLIJK*RVLJKI * XRESIJ
+ & + RVLIJK*RVLKIJ * XRESIK
+ & + RVLJKI*RVLKIJ * XRESJK
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2.*PARU(1)*RMS(0))**3*32)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-1
+ ENDIF
+ ENDIF
+ 190 CONTINUE
+ ENDIF
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVGL
+C...Calculates R-violating gluino decay widths.
+C...See BV part of PYRVCH for comments about the way the BV decay width
+C...is calculated. Same comments apply here.
+C...P. Z. Skands
+
+ SUBROUTINE PYRVGL(KFIN,XLAM,IDLAM,LKNT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ &SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+C...Local variables.
+ DOUBLE PRECISION XLAM(0:400)
+ INTEGER IDLAM(400,3), PYCOMP
+C...Information from main routine to PYRVGW
+ COMMON/PYRVNV/AB(2,16,2),RMS(0:3),RES(6,2),INTRES(6,3),IDR,IDR2
+ & ,DCMASS,KFR(3)
+C...Auxiliary variables needed for BV (RV Gauge STOre)
+ COMMON/RVGSTO/XRESI,XRESJ,XRESK,XRESIJ,XRESIK,XRESJK,RVLIJK,RVLKIJ
+ & ,RVLJKI,RVLJIK
+C...Running quark masses
+ DOUBLE PRECISION RMQ(6)
+C...Decay product masses on/off
+ LOGICAL DCMASS
+ SAVE /PYDAT1/,/PYDAT2/,/PYMSSM/,/PYSSMT/,/PYMSRV/,/PYRVNV/,
+ & /RVGSTO/
+
+C...IF LQD OR UDD TYPE R-VIOLATION ON.
+ IF (IMSS(52).GE.1.OR.IMSS(53).GE.1) THEN
+ KFSM=KFIN-KSUSY1
+
+C... AB(x,y,z):
+C x=1-2 : Select A or B coupling (1:A ; 2:B)
+C y=1-16 : Sparticle's SM code (1-6:d,u,s,c,b,t ;
+C 11-16:e,nu_e,mu,... not used here)
+C z=1-2 : Mass eigenstate number
+ DO 100 I = 1,6
+C...A Couplings
+ AB(1,I,1) = SFMIX(I,2)
+ AB(1,I,2) = SFMIX(I,4)
+C...B Couplings
+ AB(2,I,1) = -SFMIX(I,1)
+ AB(2,I,2) = -SFMIX(I,3)
+ 100 CONTINUE
+ GSTR2 = 4D0*PARU(1) * PYALPS(PMAS(PYCOMP(KFIN),1)**2)
+C...LQD DECAYS.
+ IF (IMSS(52).GE.1) THEN
+C...STEP IN I,J,K USING SINGLE COUNTER
+ DO 120 ISC=0,26
+C * GLUINO -> NUBAR_I + DBAR_J + D_K.
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-12 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -1 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 1 +2*MOD(ISC,3)
+ XLAM(LKNT)=0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC=RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)**2
+ & * 5D-1 * GSTR2
+ DCMASS = .FALSE.
+ IF (IDLAM(LKNT,2).EQ.-5.OR.IDLAM(LKNT,3).EQ.5) DCMASS=.TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = -IDLAM(LKNT,2)
+ KFR(3) = -IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+C...Normalize
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...Charge conjugate mode.
+ 110 LKNT = LKNT+1
+ IDLAM(LKNT,1) =-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2) =-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3) =-IDLAM(LKNT-1,3)
+ XLAM(LKNT) = XLAM(LKNT-1)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-2
+ ENDIF
+
+C * GLUINO -> LEPTON+_I + UBAR_J + D_K
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-11 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -2 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = 1 +2*MOD(ISC,3)
+ XLAM(LKNT)=0D0
+C...Set coupling, and decay product masses on/off
+ RVLAMC = RVLAMP(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)
+ & **2* 5D-1 * GSTR2
+ DCMASS = .FALSE.
+ IF (IDLAM(LKNT,1).EQ.-15.OR.IDLAM(LKNT,2).EQ.-6
+ & .OR.IDLAM(LKNT,3).EQ.5) DCMASS = .TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = -IDLAM(LKNT,2)
+ KFR(3) = -IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XLAM(LKNT))
+ XLAM(LKNT)=XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...Charge conjugate mode.
+ LKNT=LKNT+1
+ IDLAM(LKNT,1) = -IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2) = -IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3) = -IDLAM(LKNT-1,3)
+ XLAM(LKNT) = XLAM(LKNT-1)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-2
+ ENDIF
+
+ 120 CONTINUE
+ ENDIF
+
+C...UDD DECAYS.
+ IF (IMSS(53).GE.1) THEN
+C...STEP IN I,J,K USING SINGLE COUNTER
+ DO 130 ISC=0,26
+C * GLUINO -> UBAR_I + DBAR_J + DBAR_K.
+ IF (MOD(ISC/3,3).LT.MOD(ISC,3)) THEN
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) = -2 -2*MOD(ISC/9,3)
+ IDLAM(LKNT,2) = -1 -2*MOD(ISC/3,3)
+ IDLAM(LKNT,3) = -1 -2*MOD(ISC,3)
+ XLAM(LKNT)=0D0
+C...Set coupling, and decay product masses on/off. A factor of 2 for
+C...(N_C-1) has been used to cancel a factor 0.5.
+ RVLAMC=RVLAMB(MOD(ISC/9,3)+1,MOD(ISC/3,3)+1,MOD(ISC,3)+1)
+ & **2 * GSTR2
+ DCMASS = .FALSE.
+ IF (IDLAM(LKNT,1).EQ.-6.OR.IDLAM(LKNT,2).EQ.-5
+ & .OR.IDLAM(LKNT,3).EQ.-5) DCMASS=.TRUE.
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = IDLAM(LKNT,1)
+ KFR(2) = 0
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XRESI)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = IDLAM(LKNT,2)
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XRESJ)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = 0
+ KFR(3) = IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XRESK)
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = IDLAM(LKNT,1)
+ KFR(2) = IDLAM(LKNT,2)
+ KFR(3) = 0
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XRESIJ)
+C...Calculate interference function. (Factor -1/2 to make up for factor
+C...-2 in PYRVGW.
+ IF (ABS((XRESI+XRESJ)/XRESIJ-1D0).GT.1D-4) THEN
+ XRESIJ = 5D-1 * (XRESI+XRESJ-XRESIJ)
+ ELSE
+ XRESIJ = 0D0
+ ENDIF
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = 0
+ KFR(2) = IDLAM(LKNT,2)
+ KFR(3) = IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XRESJK)
+ IF (ABS((XRESJ+XRESK)/XRESJK-1).GT.1D-4) THEN
+ XRESJK = 5D-1 * (XRESJ+XRESK-XRESJK)
+ ELSE
+ XRESJK = 0D0
+ ENDIF
+C...Resonance KF codes (1=I,2=J,3=K)
+ KFR(1) = IDLAM(LKNT,1)
+ KFR(2) = 0
+ KFR(3) = IDLAM(LKNT,3)
+C...Calculate width.
+ CALL PYRVGW(KFIN,IDLAM(LKNT,1),IDLAM(LKNT,2),IDLAM(LKNT,3)
+ & ,XRESIK)
+ IF (ABS((XRESI+XRESK)/XRESIK-1).GT.1D-4) THEN
+ XRESIK = 5D-1 * (XRESI+XRESK-XRESIK)
+ ELSE
+ XRESIK = 0D0
+ ENDIF
+C...Calculate total width (factor 1/2 from 1/(N_C-1))
+ XLAM(LKNT) = XRESI + XRESJ + XRESK
+ & + 5D-1 * (XRESIJ + XRESIK + XRESJK)
+C...Normalize
+ XLAM(LKNT) = XLAM(LKNT)*RVLAMC/((2*PARU(1)*RMS(0))**3*32)
+C...Charge conjugate mode.
+ LKNT = LKNT+1
+ IDLAM(LKNT,1) =-IDLAM(LKNT-1,1)
+ IDLAM(LKNT,2) =-IDLAM(LKNT-1,2)
+ IDLAM(LKNT,3) =-IDLAM(LKNT-1,3)
+ XLAM(LKNT) = XLAM(LKNT-1)
+C...KINEMATICS CHECK
+ IF (XLAM(LKNT).EQ.0D0) THEN
+ LKNT=LKNT-2
+ ENDIF
+ ENDIF
+ 130 CONTINUE
+ ENDIF
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVSB
+C...Auxiliary function to PYRVSF for calculating R-Violating
+C...sfermion widths. Though the decay products are most often treated
+C...as massless in the calculation, the kinematical boundary of phase
+C...space is tested using the true masses.
+C...MODE = 1: All decay products massive
+C...MODE = 2: Decay product 1 massless
+C...MODE = 3: Decay product 2 massless
+C...MODE = 4: All decay products massless
+
+ FUNCTION PYRVSB(KFIN,ID1,ID2,RM2,MODE)
+
+ IMPLICIT DOUBLE PRECISION (A-H,O-Z)
+ IMPLICIT INTEGER (I-N)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+ DOUBLE PRECISION SM(3)
+ INTEGER PYCOMP, KC(3)
+ KC(1)=PYCOMP(KFIN)
+ KC(2)=PYCOMP(ID1)
+ KC(3)=PYCOMP(ID2)
+ SM(1)=PMAS(KC(1),1)**2
+ SM(2)=PMAS(KC(2),1)**2
+ SM(3)=PMAS(KC(3),1)**2
+C...Kinematics check
+ IF ((SM(1)-(PMAS(KC(2),1)+PMAS(KC(3),1))**2).LE.0D0) THEN
+ PYRVSB=0D0
+ RETURN
+ ENDIF
+C...CM momenta squared
+ IF (MODE.EQ.1) THEN
+ P2CM=1./(4*SM(1))*(SM(1)-(PMAS(KC(2),1)+PMAS(KC(3),1))**2)
+ & * (SM(1)-(PMAS(KC(2),1)-PMAS(KC(3),1))**2)
+ ELSE IF (MODE.EQ.2) THEN
+ P2CM=1./(4*SM(1))*(SM(1)-(PMAS(KC(3),1))**2)**2
+ ELSE IF (MODE.EQ.3) THEN
+ P2CM=1./(4*SM(1))*(SM(1)-(PMAS(KC(2),1))**2)**2
+ ELSE
+ P2CM=SM(1)/4.
+ ENDIF
+C...Calculate Width
+ PYRVSB=RM2*SQRT(MAX(0D0,P2CM))/(8*PARU(1)*SM(1))
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVGW
+C...Generalized Matrix Element for R-Violating 3-body widths.
+C...P. Z. Skands
+ SUBROUTINE PYRVGW(KFIN,ID1,ID2,ID3,XLAM)
+
+ IMPLICIT DOUBLE PRECISION (A-H,O-Z)
+ IMPLICIT INTEGER (I-N)
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+ PARAMETER (EPS=1D-4)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYRVNV/AB(2,16,2),RMS(0:3),RES(6,2),INTRES(6,3),IDR,IDR2
+ & ,DCMASS,KFR(3)
+ COMMON/PYSSMT/ZMIX(4,4),UMIX(2,2),VMIX(2,2),SMZ(4),SMW(2),
+ & SFMIX(16,4),ZMIXI(4,4),UMIXI(2,2),VMIXI(2,2)
+ DOUBLE PRECISION XLIM(3,3)
+ INTEGER KC(0:3), PYCOMP
+ LOGICAL DCMASS, DCHECK(6)
+ SAVE /PYDAT2/,/PYRVNV/,/PYSSMT/
+
+ XLAM = 0D0
+
+ KC(0) = PYCOMP(KFIN)
+ KC(1) = PYCOMP(ID1)
+ KC(2) = PYCOMP(ID2)
+ KC(3) = PYCOMP(ID3)
+ RMS(0) = PMAS(KC(0),1)
+ RMS(1) = PYMRUN(ID1,PMAS(KC(1),1)**2)
+ RMS(2) = PYMRUN(ID2,PMAS(KC(2),1)**2)
+ RMS(3) = PYMRUN(ID3,PMAS(KC(3),1)**2)
+C...INITIALIZE OUTER INTEGRATION LIMITS AND KINEMATICS CHECK
+ XLIM(1,1)=(RMS(1)+RMS(2))**2
+ XLIM(1,2)=(RMS(0)-RMS(3))**2
+ XLIM(1,3)=XLIM(1,2)-XLIM(1,1)
+ XLIM(2,1)=(RMS(2)+RMS(3))**2
+ XLIM(2,2)=(RMS(0)-RMS(1))**2
+ XLIM(2,3)=XLIM(2,2)-XLIM(2,1)
+ XLIM(3,1)=(RMS(1)+RMS(3))**2
+ XLIM(3,2)=(RMS(0)-RMS(2))**2
+ XLIM(3,3)=XLIM(3,2)-XLIM(3,1)
+C...Check Phase Space
+ IF (XLIM(1,3).LT.0D0.OR.XLIM(2,3).LT.0D0.OR.XLIM(3,3).LT.0D0) THEN
+ RETURN
+ ENDIF
+
+C...INITIALIZE RESONANCE INFORMATION
+ DO 110 JRES = 1,3
+ DO 100 IMASS = 1,2
+ IRES = 2*(JRES-1)+IMASS
+ INTRES(IRES,1) = 0
+ DCHECK(IRES) =.FALSE.
+C...NO RIGHT-HANDED NEUTRINOS
+ IF (((IMASS.EQ.2).AND.((IABS(KFR(JRES)).EQ.12).OR
+ & .(IABS(KFR(JRES)).EQ.14).OR.(IABS(KFR(JRES)).EQ.16))).OR
+ & .KFR(JRES).EQ.0) GOTO 100
+ RES(IRES,1) = PMAS(PYCOMP(IMASS*KSUSY1+IABS(KFR(JRES))),1)
+ RES(IRES,2) = PMAS(PYCOMP(IMASS*KSUSY1+IABS(KFR(JRES))),2)
+ INTRES(IRES,1) = IABS(KFR(JRES))
+ INTRES(IRES,2) = IMASS
+ IF (KFR(JRES).LT.0) INTRES(IRES,3) = 1
+ IF (KFR(JRES).GT.0) INTRES(IRES,3) = 0
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...SUM OVER DIAGRAMS AND INTEGRATE OVER PHASE SPACE
+
+C...RESONANCE CONTRIBUTIONS
+C...(Only sum contributions where the resonance is off shell).
+C...Store whether diagram on/off in DCHECK.
+C...LOOP OVER MASS STATES
+ DO 120 J=1,2
+ IDR=J
+ TMIX = SFMIX(INTRES(IDR,1),2*J+INTRES(IDR,3)-1)**2
+ IF ((RMS(0).LT.(RMS(1)+RES(IDR,1)).OR.(RES(IDR,1).LT.(RMS(2)
+ & +RMS(3)))).AND.TMIX.GT.EPS.AND.INTRES(IDR,1).NE.0) THEN
+ DCHECK(IDR) =.TRUE.
+ XLAM = XLAM + TMIX * PYRVI1(2,3,1)
+ ENDIF
+
+ IDR=J+2
+ TMIX = SFMIX(INTRES(IDR,1),2*J+INTRES(IDR,3)-1)**2
+ IF ((RMS(0).LT.(RMS(2)+RES(IDR,1)).OR.(RES(IDR,1).LT.(RMS(1)
+ & +RMS(3)))).AND.TMIX.GT.EPS.AND.INTRES(IDR,1).NE.0) THEN
+ DCHECK(IDR) =.TRUE.
+ XLAM = XLAM + TMIX * PYRVI1(1,3,2)
+ ENDIF
+
+ IDR=J+4
+ TMIX = SFMIX(INTRES(IDR,1),2*J+INTRES(IDR,3)-1)**2
+ IF ((RMS(0).LT.(RMS(3)+RES(IDR,1)).OR.(RES(IDR,1).LT.(RMS(1)
+ & +RMS(2)))).AND.TMIX.GT.EPS.AND.INTRES(IDR,1).NE.0) THEN
+ DCHECK(IDR) =.TRUE.
+ XLAM = XLAM + TMIX * PYRVI1(1,2,3)
+ ENDIF
+ 120 CONTINUE
+C... L-R INTERFERENCES
+C... (Only add contributions where both contributing diagrams
+C... are non-resonant).
+ IDR=1
+ IF (DCHECK(1).AND.DCHECK(2)) THEN
+C...Bug corrected 11/12 2001. Skands.
+ XLAM = XLAM + 2D0 * PYRVI2(2,3,1)
+ & * SFMIX(INTRES(1,1),2+INTRES(1,3)-1)
+ & * SFMIX(INTRES(2,1),4+INTRES(2,3)-1)
+ ENDIF
+
+ IDR=3
+ IF (DCHECK(3).AND.DCHECK(4)) THEN
+ XLAM = XLAM + 2D0 * PYRVI2(1,3,2)
+ & * SFMIX(INTRES(3,1),2+INTRES(3,3)-1)
+ & * SFMIX(INTRES(4,1),4+INTRES(4,3)-1)
+ ENDIF
+
+ IDR=5
+ IF (DCHECK(5).AND.DCHECK(6)) THEN
+ XLAM = XLAM + 2D0 * PYRVI2(1,2,3)
+ & * SFMIX(INTRES(5,1),2+INTRES(5,3)-1)
+ & * SFMIX(INTRES(6,1),4+INTRES(6,3)-1)
+ ENDIF
+C... TRUE INTERFERENCES
+C... (Only add contributions where both contributing diagrams
+C... are non-resonant).
+ PREF=-2D0
+ IF ((KFIN-KSUSY1).EQ.24.OR.(KFIN-KSUSY1).EQ.37) PREF=2D0
+ DO 140 IKR1 = 1,2
+ DO 130 IKR2 = 1,2
+ IDR = IKR1+2
+ IDR2 = IKR2
+ IF (DCHECK(IDR).AND.DCHECK(IDR2)) THEN
+ XLAM = XLAM + PREF*PYRVI3(1,3,2) *
+ & SFMIX(INTRES(IDR,1),2*IKR1+INTRES(IDR,3)-1)
+ & *SFMIX(INTRES(IDR2,1),2*IKR2+INTRES(IDR2,3)-1)
+ ENDIF
+
+ IDR = IKR1+4
+ IDR2 = IKR2
+ IF (DCHECK(IDR).AND.DCHECK(IDR2)) THEN
+ XLAM = XLAM + PREF*PYRVI3(1,2,3) *
+ & SFMIX(INTRES(IDR,1),2*IKR1+INTRES(IDR,3)-1)
+ & *SFMIX(INTRES(IDR2,1),2*IKR2+INTRES(IDR2,3)-1)
+ ENDIF
+
+ IDR = IKR1+4
+ IDR2 = IKR2+2
+ IF (DCHECK(IDR).AND.DCHECK(IDR2)) THEN
+ XLAM = XLAM + PREF*PYRVI3(2,1,3) *
+ & SFMIX(INTRES(IDR,1),2*IKR1+INTRES(IDR,3)-1)
+ & *SFMIX(INTRES(IDR2,1),2*IKR2+INTRES(IDR2,3)-1)
+ ENDIF
+ 130 CONTINUE
+ 140 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVI1
+C...Function to integrate resonance contributions
+
+ FUNCTION PYRVI1(ID1,ID2,ID3)
+
+ IMPLICIT NONE
+ DOUBLE PRECISION LO,HI,PYRVI1,PYRVG1,PYGAUS
+ DOUBLE PRECISION RES, AB, RM, RESM, RESW, A, B, RMS
+ INTEGER ID1,ID2,ID3, IDR, IDR2, KFR, INTRES
+ LOGICAL MFLAG,DCMASS
+ EXTERNAL PYRVG1,PYGAUS
+ COMMON/PYRVNV/AB(2,16,2),RMS(0:3),RES(6,2),INTRES(6,3),IDR,IDR2
+ & ,DCMASS,KFR(3)
+ COMMON/PYRVPM/RM(0:3),A(2),B(2),RESM(2),RESW(2),MFLAG
+ SAVE/PYRVNV/,/PYRVPM/
+C...Initialize mass and width information
+ PYRVI1 = 0D0
+ RM(0) = RMS(0)
+ RM(1) = RMS(ID1)
+ RM(2) = RMS(ID2)
+ RM(3) = RMS(ID3)
+ RESM(1)= RES(IDR,1)
+ RESW(1)= RES(IDR,2)
+C...A->B and B->A for antisparticles
+ A(1) = AB(1+INTRES(IDR,3),INTRES(IDR,1),INTRES(IDR,2))
+ B(1) = AB(2-INTRES(IDR,3),INTRES(IDR,1),INTRES(IDR,2))
+C...Integration boundaries and mass flag
+ LO = (RM(1)+RM(2))**2
+ HI = (RM(0)-RM(3))**2
+ MFLAG = DCMASS
+ PYRVI1 = PYGAUS(PYRVG1,LO,HI,1D-3)
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVI2
+C...Function to integrate L-R interference contributions
+
+ FUNCTION PYRVI2(ID1,ID2,ID3)
+
+ IMPLICIT NONE
+ DOUBLE PRECISION LO,HI,PYRVI2, PYRVG2, PYGAUS
+ DOUBLE PRECISION RES, AB, RM, RESM, RESW, A, B, RMS
+ INTEGER ID1,ID2,ID3, IDR, IDR2, KFR, INTRES
+ LOGICAL MFLAG,DCMASS
+ EXTERNAL PYRVG2,PYGAUS
+ COMMON/PYRVNV/AB(2,16,2),RMS(0:3),RES(6,2),INTRES(6,3),IDR,IDR2
+ & ,DCMASS,KFR(3)
+ COMMON/PYRVPM/RM(0:3),A(2),B(2),RESM(2),RESW(2),MFLAG
+ SAVE/PYRVNV/,/PYRVPM/
+C...Initialize mass and width information
+ PYRVI2 = 0D0
+ RM(0) = RMS(0)
+ RM(1) = RMS(ID1)
+ RM(2) = RMS(ID2)
+ RM(3) = RMS(ID3)
+ RESM(1)= RES(IDR,1)
+ RESW(1)= RES(IDR,2)
+ RESM(2)= RES(IDR+1,1)
+ RESW(2)= RES(IDR+1,2)
+C...A->B and B->A for antisparticles
+ A(1) = AB(1+INTRES(IDR,3),INTRES(IDR,1),INTRES(IDR,2))
+ B(1) = AB(2-INTRES(IDR,3),INTRES(IDR,1),INTRES(IDR,2))
+ A(2) = AB(1+INTRES(IDR+1,3),INTRES(IDR+1,1),INTRES(IDR+1,2))
+ B(2) = AB(2-INTRES(IDR+1,3),INTRES(IDR+1,1),INTRES(IDR+1,2))
+C...Boundaries and mass flag
+ LO = (RM(1)+RM(2))**2
+ HI = (RM(0)-RM(3))**2
+ MFLAG = DCMASS
+ PYRVI2 = PYGAUS(PYRVG2,LO,HI,1D-3)
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVI3
+C...Function to integrate true interference contributions
+
+ FUNCTION PYRVI3(ID1,ID2,ID3)
+
+ IMPLICIT NONE
+ DOUBLE PRECISION LO,HI,PYRVI3, PYRVG3, PYGAUS
+ DOUBLE PRECISION RES, AB, RM, RESM, RESW, A, B, RMS
+ INTEGER ID1,ID2,ID3, IDR, IDR2, KFR, INTRES
+ LOGICAL MFLAG,DCMASS
+ EXTERNAL PYRVG3,PYGAUS
+ COMMON/PYRVNV/AB(2,16,2),RMS(0:3),RES(6,2),INTRES(6,3),IDR,IDR2
+ & ,DCMASS,KFR(3)
+ COMMON/PYRVPM/RM(0:3),A(2),B(2),RESM(2),RESW(2),MFLAG
+ SAVE/PYRVNV/,/PYRVPM/
+C...Initialize mass and width information
+ PYRVI3 = 0D0
+ RM(0) = RMS(0)
+ RM(1) = RMS(ID1)
+ RM(2) = RMS(ID2)
+ RM(3) = RMS(ID3)
+ RESM(1)= RES(IDR,1)
+ RESW(1)= RES(IDR,2)
+ RESM(2)= RES(IDR2,1)
+ RESW(2)= RES(IDR2,2)
+C...A -> B and B -> A for antisparticles
+ A(1) = AB(1+INTRES(IDR,3),INTRES(IDR,1),INTRES(IDR,2))
+ B(1) = AB(2-INTRES(IDR,3),INTRES(IDR,1),INTRES(IDR,2))
+ A(2) = AB(1+INTRES(IDR2,3),INTRES(IDR2,1),INTRES(IDR2,2))
+ B(2) = AB(2-INTRES(IDR2,3),INTRES(IDR2,1),INTRES(IDR2,2))
+C...Boundaries and mass flag
+ LO = (RM(1)+RM(2))**2
+ HI = (RM(0)-RM(3))**2
+ MFLAG = DCMASS
+ PYRVI3 = PYGAUS(PYRVG3,LO,HI,1D-3)
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVG1
+C...Integrand for resonance contributions
+
+ FUNCTION PYRVG1(X)
+
+ IMPLICIT NONE
+ COMMON/PYRVPM/RM(0:3),A(2),B(2),RESM(2),RESW(2),MFLAG
+ DOUBLE PRECISION X, RM, A, B, RESM, RESW, DELTAY,PYRVR
+ DOUBLE PRECISION RVR,PYRVG1,E2,E3,C1,SR1,SR2,A1,A2
+ LOGICAL MFLAG
+ SAVE/PYRVPM/
+ RVR = PYRVR(X,RESM(1),RESW(1))
+ C1 = 2D0*SQRT(MAX(0D0,X))
+ IF (.NOT.MFLAG) THEN
+ E2 = X/C1
+ E3 = (RM(0)**2-X)/C1
+ DELTAY = 4D0*E2*E3
+ PYRVG1 = DELTAY*RVR*X*(A(1)**2+B(1)**2)*(RM(0)**2-X)
+ ELSE
+ E2 = (X-RM(1)**2+RM(2)**2)/C1
+ E3 = (RM(0)**2-X-RM(3)**2)/C1
+ SR1 = SQRT(MAX(0D0,E2**2-RM(2)**2))
+ SR2 = SQRT(MAX(0D0,E3**2-RM(3)**2))
+ DELTAY = 4D0*SR1*SR2
+ A1 = 4.*A(1)*B(1)*RM(3)*RM(0)
+ A2 = (A(1)**2+B(1)**2)*(RM(0)**2+RM(3)**2-X)
+ PYRVG1 = DELTAY*RVR*(X-RM(1)**2-RM(2)**2)*(A1+A2)
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVG2
+C...Integrand for L-R interference contributions
+
+ FUNCTION PYRVG2(X)
+
+ IMPLICIT NONE
+ COMMON/PYRVPM/RM(0:3),A(2),B(2),RESM(2),RESW(2),MFLAG
+ DOUBLE PRECISION X, RM, A, B, RESM, RESW, DELTAY, PYRVS
+ DOUBLE PRECISION RVS,PYRVG2,E2,E3,C1,SR1,SR2
+ LOGICAL MFLAG
+ SAVE/PYRVPM/
+ C1 = 2D0*SQRT(MAX(0D0,X))
+ RVS = PYRVS(X,X,RESM(1),RESW(1),RESM(2),RESW(2))
+ IF (.NOT.MFLAG) THEN
+ E2 = X/C1
+ E3 = (RM(0)**2-X)/C1
+ DELTAY = 4D0*E2*E3
+ PYRVG2 = DELTAY*RVS*X*(A(1)*A(2)+B(1)*B(2))*(RM(0)**2-X)
+ ELSE
+ E2 = (X-RM(1)**2+RM(2)**2)/C1
+ E3 = (RM(0)**2-X-RM(3)**2)/C1
+ SR1 = SQRT(MAX(0D0,E2**2-RM(2)**2))
+ SR2 = SQRT(MAX(0D0,E3**2-RM(3)**2))
+ DELTAY = 4D0*SR1*SR2
+ PYRVG2 = DELTAY*RVS*(X-RM(1)**2-RM(2)**2)*((A(1)*A(2)
+ & + B(1)*B(2))*(RM(0)**2+RM(3)**2-X)
+ & + 2D0*(A(1)*B(2)+A(2)*B(1))*RM(3)*RM(0))
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVG3
+C...Function to do Y integration over true interference contributions
+
+ FUNCTION PYRVG3(X)
+
+ IMPLICIT NONE
+ COMMON/PYRVPM/RM(0:3),A(2),B(2),RESM(2),RESW(2),MFLAG
+C...Second Dalitz variable for PYRVG4
+ COMMON/PYG2DX/X1
+ DOUBLE PRECISION RM, A, B, RESM, RESW, X, X1
+ DOUBLE PRECISION E2, E3, C1, SQ1, SR1, SR2, YMIN, YMAX
+ DOUBLE PRECISION PYRVG3, PYRVG4, PYGAU2
+ LOGICAL MFLAG
+ EXTERNAL PYGAU2,PYRVG4
+ SAVE/PYRVPM/,/PYG2DX/
+ PYRVG3=0D0
+ C1=2D0*SQRT(MAX(1D-9,X))
+ X1=X
+ IF (.NOT.MFLAG) THEN
+ E2 = X/C1
+ E3 = (RM(0)**2-X)/C1
+ YMIN = 0D0
+ YMAX = 4D0*E2*E3
+ ELSE
+ E2 = (X-RM(1)**2+RM(2)**2)/C1
+ E3 = (RM(0)**2-X-RM(3)**2)/C1
+ SQ1 = (E2+E3)**2
+ SR1 = SQRT(MAX(0D0,E2**2-RM(2)**2))
+ SR2 = SQRT(MAX(0D0,E3**2-RM(3)**2))
+ YMIN = SQ1-(SR1+SR2)**2
+ YMAX = SQ1-(SR1-SR2)**2
+ ENDIF
+ PYRVG3 = PYGAU2(PYRVG4,YMIN,YMAX,1D-3)
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVG4
+C...Integrand for true intereference contributions
+
+ FUNCTION PYRVG4(Y)
+
+ IMPLICIT NONE
+ COMMON/PYRVPM/RM(0:3),A(2),B(2),RESM(2),RESW(2),MFLAG
+ COMMON/PYG2DX/X
+ DOUBLE PRECISION X, Y, PYRVG4, RM, A, B, RESM, RESW, RVS, PYRVS
+ LOGICAL MFLAG
+ SAVE /PYRVPM/,/PYG2DX/
+ PYRVG4=0D0
+ RVS=PYRVS(X,Y,RESM(1),RESW(1),RESM(2),RESW(2))
+ IF (.NOT.MFLAG) THEN
+ PYRVG4 = RVS*B(1)*B(2)*X*Y
+ ELSE
+ PYRVG4 = RVS*(RM(1)*RM(3)*A(1)*A(2)*(X+Y-RM(1)**2-RM(3)**2)
+ & + RM(1)*RM(0)*B(1)*A(2)*(Y-RM(2)**2-RM(3)**2)
+ & + RM(3)*RM(0)*A(1)*B(2)*(X-RM(1)**2-RM(2)**2)
+ & + B(1)*B(2)*(X*Y-(RM(1)*RM(3))**2-(RM(0)*RM(2))**2))
+ ENDIF
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVR
+C...Breit-Wigner for resonance contributions
+
+ FUNCTION PYRVR(Mab2,RM,RW)
+
+ IMPLICIT NONE
+ DOUBLE PRECISION Mab2,RM,RW,PYRVR
+ PYRVR = 1D0/((Mab2-RM**2)**2+RM**2*RW**2)
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRVS
+C...Interference function
+
+ FUNCTION PYRVS(X,Y,M1,W1,M2,W2)
+
+ IMPLICIT NONE
+ DOUBLE PRECISION X, Y, PYRVS, PYRVR, M1, M2, W1, W2
+ PYRVS = PYRVR(X,M1,W1)*PYRVR(Y,M2,W2)*((X-M1**2)*(Y-M2**2)
+ & +W1*W2*M1*M2)
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PY1ENT
+C...Stores one parton/particle in commonblock PYJETS.
+
+ SUBROUTINE PY1ENT(IP,KF,PE,THE,PHI)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Standard checks.
+ MSTU(28)=0
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ IPA=MAX(1,IABS(IP))
+ IF(IPA.GT.MSTU(4)) CALL PYERRM(21,
+ &'(PY1ENT:) writing outside PYJETS memory')
+ KC=PYCOMP(KF)
+ IF(KC.EQ.0) CALL PYERRM(12,'(PY1ENT:) unknown flavour code')
+
+C...Find mass. Reset K, P and V vectors.
+ PM=0D0
+ IF(MSTU(10).EQ.1) PM=P(IPA,5)
+ IF(MSTU(10).GE.2) PM=PYMASS(KF)
+ DO 100 J=1,5
+ K(IPA,J)=0
+ P(IPA,J)=0D0
+ V(IPA,J)=0D0
+ 100 CONTINUE
+
+C...Store parton/particle in K and P vectors.
+ K(IPA,1)=1
+ IF(IP.LT.0) K(IPA,1)=2
+ K(IPA,2)=KF
+ P(IPA,5)=PM
+ P(IPA,4)=MAX(PE,PM)
+ PA=SQRT(P(IPA,4)**2-P(IPA,5)**2)
+ P(IPA,1)=PA*SIN(THE)*COS(PHI)
+ P(IPA,2)=PA*SIN(THE)*SIN(PHI)
+ P(IPA,3)=PA*COS(THE)
+
+C...Set N. Optionally fragment/decay.
+ N=IPA
+ IF(IP.EQ.0) CALL PYEXEC
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PY2ENT
+C...Stores two partons/particles in their CM frame,
+C...with the first along the +z axis.
+
+ SUBROUTINE PY2ENT(IP,KF1,KF2,PECM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Standard checks.
+ MSTU(28)=0
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ IPA=MAX(1,IABS(IP))
+ IF(IPA.GT.MSTU(4)-1) CALL PYERRM(21,
+ &'(PY2ENT:) writing outside PYJETS memory')
+ KC1=PYCOMP(KF1)
+ KC2=PYCOMP(KF2)
+ IF(KC1.EQ.0.OR.KC2.EQ.0) CALL PYERRM(12,
+ &'(PY2ENT:) unknown flavour code')
+
+C...Find masses. Reset K, P and V vectors.
+ PM1=0D0
+ IF(MSTU(10).EQ.1) PM1=P(IPA,5)
+ IF(MSTU(10).GE.2) PM1=PYMASS(KF1)
+ PM2=0D0
+ IF(MSTU(10).EQ.1) PM2=P(IPA+1,5)
+ IF(MSTU(10).GE.2) PM2=PYMASS(KF2)
+ DO 110 I=IPA,IPA+1
+ DO 100 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...Check flavours.
+ KQ1=KCHG(KC1,2)*ISIGN(1,KF1)
+ KQ2=KCHG(KC2,2)*ISIGN(1,KF2)
+ IF(MSTU(19).EQ.1) THEN
+ MSTU(19)=0
+ ELSE
+ IF(KQ1+KQ2.NE.0.AND.KQ1+KQ2.NE.4) CALL PYERRM(2,
+ & '(PY2ENT:) unphysical flavour combination')
+ ENDIF
+ K(IPA,2)=KF1
+ K(IPA+1,2)=KF2
+
+C...Store partons/particles in K vectors for normal case.
+ IF(IP.GE.0) THEN
+ K(IPA,1)=1
+ IF(KQ1.NE.0.AND.KQ2.NE.0) K(IPA,1)=2
+ K(IPA+1,1)=1
+
+C...Store partons in K vectors for parton shower evolution.
+ ELSE
+ K(IPA,1)=3
+ K(IPA+1,1)=3
+ K(IPA,4)=MSTU(5)*(IPA+1)
+ K(IPA,5)=K(IPA,4)
+ K(IPA+1,4)=MSTU(5)*IPA
+ K(IPA+1,5)=K(IPA+1,4)
+ ENDIF
+
+C...Check kinematics and store partons/particles in P vectors.
+ IF(PECM.LE.PM1+PM2) CALL PYERRM(13,
+ &'(PY2ENT:) energy smaller than sum of masses')
+ PA=SQRT(MAX(0D0,(PECM**2-PM1**2-PM2**2)**2-(2D0*PM1*PM2)**2))/
+ &(2D0*PECM)
+ P(IPA,3)=PA
+ P(IPA,4)=SQRT(PM1**2+PA**2)
+ P(IPA,5)=PM1
+ P(IPA+1,3)=-PA
+ P(IPA+1,4)=SQRT(PM2**2+PA**2)
+ P(IPA+1,5)=PM2
+
+C...Set N. Optionally fragment/decay.
+ N=IPA+1
+ IF(IP.EQ.0) CALL PYEXEC
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PY3ENT
+C...Stores three partons or particles in their CM frame,
+C...with the first along the +z axis and the third in the (x,z)
+C...plane with x > 0.
+
+ SUBROUTINE PY3ENT(IP,KF1,KF2,KF3,PECM,X1,X3)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Standard checks.
+ MSTU(28)=0
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ IPA=MAX(1,IABS(IP))
+ IF(IPA.GT.MSTU(4)-2) CALL PYERRM(21,
+ &'(PY3ENT:) writing outside PYJETS memory')
+ KC1=PYCOMP(KF1)
+ KC2=PYCOMP(KF2)
+ KC3=PYCOMP(KF3)
+ IF(KC1.EQ.0.OR.KC2.EQ.0.OR.KC3.EQ.0) CALL PYERRM(12,
+ &'(PY3ENT:) unknown flavour code')
+
+C...Find masses. Reset K, P and V vectors.
+ PM1=0D0
+ IF(MSTU(10).EQ.1) PM1=P(IPA,5)
+ IF(MSTU(10).GE.2) PM1=PYMASS(KF1)
+ PM2=0D0
+ IF(MSTU(10).EQ.1) PM2=P(IPA+1,5)
+ IF(MSTU(10).GE.2) PM2=PYMASS(KF2)
+ PM3=0D0
+ IF(MSTU(10).EQ.1) PM3=P(IPA+2,5)
+ IF(MSTU(10).GE.2) PM3=PYMASS(KF3)
+ DO 110 I=IPA,IPA+2
+ DO 100 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...Check flavours.
+ KQ1=KCHG(KC1,2)*ISIGN(1,KF1)
+ KQ2=KCHG(KC2,2)*ISIGN(1,KF2)
+ KQ3=KCHG(KC3,2)*ISIGN(1,KF3)
+ IF(MSTU(19).EQ.1) THEN
+ MSTU(19)=0
+ ELSEIF(KQ1.EQ.0.AND.KQ2.EQ.0.AND.KQ3.EQ.0) THEN
+ ELSEIF(KQ1.NE.0.AND.KQ2.EQ.2.AND.(KQ1+KQ3.EQ.0.OR.
+ & KQ1+KQ3.EQ.4)) THEN
+ ELSE
+ CALL PYERRM(2,'(PY3ENT:) unphysical flavour combination')
+ ENDIF
+ K(IPA,2)=KF1
+ K(IPA+1,2)=KF2
+ K(IPA+2,2)=KF3
+
+C...Store partons/particles in K vectors for normal case.
+ IF(IP.GE.0) THEN
+ K(IPA,1)=1
+ IF(KQ1.NE.0.AND.(KQ2.NE.0.OR.KQ3.NE.0)) K(IPA,1)=2
+ K(IPA+1,1)=1
+ IF(KQ2.NE.0.AND.KQ3.NE.0) K(IPA+1,1)=2
+ K(IPA+2,1)=1
+
+C...Store partons in K vectors for parton shower evolution.
+ ELSE
+ K(IPA,1)=3
+ K(IPA+1,1)=3
+ K(IPA+2,1)=3
+ KCS=4
+ IF(KQ1.EQ.-1) KCS=5
+ K(IPA,KCS)=MSTU(5)*(IPA+1)
+ K(IPA,9-KCS)=MSTU(5)*(IPA+2)
+ K(IPA+1,KCS)=MSTU(5)*(IPA+2)
+ K(IPA+1,9-KCS)=MSTU(5)*IPA
+ K(IPA+2,KCS)=MSTU(5)*IPA
+ K(IPA+2,9-KCS)=MSTU(5)*(IPA+1)
+ ENDIF
+
+C...Check kinematics.
+ MKERR=0
+ IF(0.5D0*X1*PECM.LE.PM1.OR.0.5D0*(2D0-X1-X3)*PECM.LE.PM2.OR.
+ &0.5D0*X3*PECM.LE.PM3) MKERR=1
+ PA1=SQRT(MAX(1D-10,(0.5D0*X1*PECM)**2-PM1**2))
+ PA2=SQRT(MAX(1D-10,(0.5D0*(2D0-X1-X3)*PECM)**2-PM2**2))
+ PA3=SQRT(MAX(1D-10,(0.5D0*X3*PECM)**2-PM3**2))
+ CTHE2=(PA3**2-PA1**2-PA2**2)/(2D0*PA1*PA2)
+ CTHE3=(PA2**2-PA1**2-PA3**2)/(2D0*PA1*PA3)
+ IF(ABS(CTHE2).GE.1.001D0.OR.ABS(CTHE3).GE.1.001D0) MKERR=1
+ CTHE3=MAX(-1D0,MIN(1D0,CTHE3))
+ IF(MKERR.NE.0) CALL PYERRM(13,
+ &'(PY3ENT:) unphysical kinematical variable setup')
+
+C...Store partons/particles in P vectors.
+ P(IPA,3)=PA1
+ P(IPA,4)=SQRT(PA1**2+PM1**2)
+ P(IPA,5)=PM1
+ P(IPA+2,1)=PA3*SQRT(1D0-CTHE3**2)
+ P(IPA+2,3)=PA3*CTHE3
+ P(IPA+2,4)=SQRT(PA3**2+PM3**2)
+ P(IPA+2,5)=PM3
+ P(IPA+1,1)=-P(IPA+2,1)
+ P(IPA+1,3)=-P(IPA,3)-P(IPA+2,3)
+ P(IPA+1,4)=SQRT(P(IPA+1,1)**2+P(IPA+1,3)**2+PM2**2)
+ P(IPA+1,5)=PM2
+
+C...Set N. Optionally fragment/decay.
+ N=IPA+2
+ IF(IP.EQ.0) CALL PYEXEC
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PY4ENT
+C...Stores four partons or particles in their CM frame, with
+C...the first along the +z axis, the last in the xz plane with x > 0
+C...and the second having y < 0 and y > 0 with equal probability.
+
+ SUBROUTINE PY4ENT(IP,KF1,KF2,KF3,KF4,PECM,X1,X2,X4,X12,X14)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Standard checks.
+ MSTU(28)=0
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ IPA=MAX(1,IABS(IP))
+ IF(IPA.GT.MSTU(4)-3) CALL PYERRM(21,
+ &'(PY4ENT:) writing outside PYJETS momory')
+ KC1=PYCOMP(KF1)
+ KC2=PYCOMP(KF2)
+ KC3=PYCOMP(KF3)
+ KC4=PYCOMP(KF4)
+ IF(KC1.EQ.0.OR.KC2.EQ.0.OR.KC3.EQ.0.OR.KC4.EQ.0) CALL PYERRM(12,
+ &'(PY4ENT:) unknown flavour code')
+
+C...Find masses. Reset K, P and V vectors.
+ PM1=0D0
+ IF(MSTU(10).EQ.1) PM1=P(IPA,5)
+ IF(MSTU(10).GE.2) PM1=PYMASS(KF1)
+ PM2=0D0
+ IF(MSTU(10).EQ.1) PM2=P(IPA+1,5)
+ IF(MSTU(10).GE.2) PM2=PYMASS(KF2)
+ PM3=0D0
+ IF(MSTU(10).EQ.1) PM3=P(IPA+2,5)
+ IF(MSTU(10).GE.2) PM3=PYMASS(KF3)
+ PM4=0D0
+ IF(MSTU(10).EQ.1) PM4=P(IPA+3,5)
+ IF(MSTU(10).GE.2) PM4=PYMASS(KF4)
+ DO 110 I=IPA,IPA+3
+ DO 100 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...Check flavours.
+ KQ1=KCHG(KC1,2)*ISIGN(1,KF1)
+ KQ2=KCHG(KC2,2)*ISIGN(1,KF2)
+ KQ3=KCHG(KC3,2)*ISIGN(1,KF3)
+ KQ4=KCHG(KC4,2)*ISIGN(1,KF4)
+ IF(MSTU(19).EQ.1) THEN
+ MSTU(19)=0
+ ELSEIF(KQ1.EQ.0.AND.KQ2.EQ.0.AND.KQ3.EQ.0.AND.KQ4.EQ.0) THEN
+ ELSEIF(KQ1.NE.0.AND.KQ2.EQ.2.AND.KQ3.EQ.2.AND.(KQ1+KQ4.EQ.0.OR.
+ & KQ1+KQ4.EQ.4)) THEN
+ ELSEIF(KQ1.NE.0.AND.KQ1+KQ2.EQ.0.AND.KQ3.NE.0.AND.KQ3+KQ4.EQ.0D0)
+ & THEN
+ ELSE
+ CALL PYERRM(2,'(PY4ENT:) unphysical flavour combination')
+ ENDIF
+ K(IPA,2)=KF1
+ K(IPA+1,2)=KF2
+ K(IPA+2,2)=KF3
+ K(IPA+3,2)=KF4
+
+C...Store partons/particles in K vectors for normal case.
+ IF(IP.GE.0) THEN
+ K(IPA,1)=1
+ IF(KQ1.NE.0.AND.(KQ2.NE.0.OR.KQ3.NE.0.OR.KQ4.NE.0)) K(IPA,1)=2
+ K(IPA+1,1)=1
+ IF(KQ2.NE.0.AND.KQ1+KQ2.NE.0.AND.(KQ3.NE.0.OR.KQ4.NE.0))
+ & K(IPA+1,1)=2
+ K(IPA+2,1)=1
+ IF(KQ3.NE.0.AND.KQ4.NE.0) K(IPA+2,1)=2
+ K(IPA+3,1)=1
+
+C...Store partons for parton shower evolution from q-g-g-qbar or
+C...g-g-g-g event.
+ ELSEIF(KQ1+KQ2.NE.0) THEN
+ K(IPA,1)=3
+ K(IPA+1,1)=3
+ K(IPA+2,1)=3
+ K(IPA+3,1)=3
+ KCS=4
+ IF(KQ1.EQ.-1) KCS=5
+ K(IPA,KCS)=MSTU(5)*(IPA+1)
+ K(IPA,9-KCS)=MSTU(5)*(IPA+3)
+ K(IPA+1,KCS)=MSTU(5)*(IPA+2)
+ K(IPA+1,9-KCS)=MSTU(5)*IPA
+ K(IPA+2,KCS)=MSTU(5)*(IPA+3)
+ K(IPA+2,9-KCS)=MSTU(5)*(IPA+1)
+ K(IPA+3,KCS)=MSTU(5)*IPA
+ K(IPA+3,9-KCS)=MSTU(5)*(IPA+2)
+
+C...Store partons for parton shower evolution from q-qbar-q-qbar event.
+ ELSE
+ K(IPA,1)=3
+ K(IPA+1,1)=3
+ K(IPA+2,1)=3
+ K(IPA+3,1)=3
+ K(IPA,4)=MSTU(5)*(IPA+1)
+ K(IPA,5)=K(IPA,4)
+ K(IPA+1,4)=MSTU(5)*IPA
+ K(IPA+1,5)=K(IPA+1,4)
+ K(IPA+2,4)=MSTU(5)*(IPA+3)
+ K(IPA+2,5)=K(IPA+2,4)
+ K(IPA+3,4)=MSTU(5)*(IPA+2)
+ K(IPA+3,5)=K(IPA+3,4)
+ ENDIF
+
+C...Check kinematics.
+ MKERR=0
+ IF(0.5D0*X1*PECM.LE.PM1.OR.0.5D0*X2*PECM.LE.PM2.OR.
+ &0.5D0*(2D0-X1-X2-X4)*PECM.LE.PM3.OR.0.5D0*X4*PECM.LE.PM4)
+ &MKERR=1
+ PA1=SQRT(MAX(1D-10,(0.5D0*X1*PECM)**2-PM1**2))
+ PA2=SQRT(MAX(1D-10,(0.5D0*X2*PECM)**2-PM2**2))
+ PA4=SQRT(MAX(1D-10,(0.5D0*X4*PECM)**2-PM4**2))
+ X24=X1+X2+X4-1D0-X12-X14+(PM3**2-PM1**2-PM2**2-PM4**2)/PECM**2
+ CTHE4=(X1*X4-2D0*X14)*PECM**2/(4D0*PA1*PA4)
+ IF(ABS(CTHE4).GE.1.002D0) MKERR=1
+ CTHE4=MAX(-1D0,MIN(1D0,CTHE4))
+ STHE4=SQRT(1D0-CTHE4**2)
+ CTHE2=(X1*X2-2D0*X12)*PECM**2/(4D0*PA1*PA2)
+ IF(ABS(CTHE2).GE.1.002D0) MKERR=1
+ CTHE2=MAX(-1D0,MIN(1D0,CTHE2))
+ STHE2=SQRT(1D0-CTHE2**2)
+ CPHI2=((X2*X4-2D0*X24)*PECM**2-4D0*PA2*CTHE2*PA4*CTHE4)/
+ &MAX(1D-8*PECM**2,4D0*PA2*STHE2*PA4*STHE4)
+ IF(ABS(CPHI2).GE.1.05D0) MKERR=1
+ CPHI2=MAX(-1D0,MIN(1D0,CPHI2))
+ IF(MKERR.EQ.1) CALL PYERRM(13,
+ &'(PY4ENT:) unphysical kinematical variable setup')
+
+C...Store partons/particles in P vectors.
+ P(IPA,3)=PA1
+ P(IPA,4)=SQRT(PA1**2+PM1**2)
+ P(IPA,5)=PM1
+ P(IPA+3,1)=PA4*STHE4
+ P(IPA+3,3)=PA4*CTHE4
+ P(IPA+3,4)=SQRT(PA4**2+PM4**2)
+ P(IPA+3,5)=PM4
+ P(IPA+1,1)=PA2*STHE2*CPHI2
+ P(IPA+1,2)=PA2*STHE2*SQRT(1D0-CPHI2**2)*(-1D0)**INT(PYR(0)+0.5D0)
+ P(IPA+1,3)=PA2*CTHE2
+ P(IPA+1,4)=SQRT(PA2**2+PM2**2)
+ P(IPA+1,5)=PM2
+ P(IPA+2,1)=-P(IPA+1,1)-P(IPA+3,1)
+ P(IPA+2,2)=-P(IPA+1,2)
+ P(IPA+2,3)=-P(IPA,3)-P(IPA+1,3)-P(IPA+3,3)
+ P(IPA+2,4)=SQRT(P(IPA+2,1)**2+P(IPA+2,2)**2+P(IPA+2,3)**2+PM3**2)
+ P(IPA+2,5)=PM3
+
+C...Set N. Optionally fragment/decay.
+ N=IPA+3
+ IF(IP.EQ.0) CALL PYEXEC
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PY2FRM
+C...An interface from a two-fermion generator to include
+C...parton showers and hadronization.
+
+ SUBROUTINE PY2FRM(IRAD,ITAU,ICOM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYJETS/,/PYDAT1/
+C...Local arrays.
+ DIMENSION IJOIN(2),INTAU(2)
+
+C...Call PYHEPC to convert input from HEPEVT to PYJETS common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(2)
+ ENDIF
+
+C...Loop through entries and pick up all final fermions/antifermions.
+ I1=0
+ I2=0
+ DO 100 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 100
+ KFA=IABS(K(I,2))
+ IF((KFA.GE.1.AND.KFA.LE.6).OR.(KFA.GE.11.AND.KFA.LE.16)) THEN
+ IF(K(I,2).GT.0) THEN
+ IF(I1.EQ.0) THEN
+ I1=I
+ ELSE
+ CALL PYERRM(16,'(PY2FRM:) more than one fermion')
+ ENDIF
+ ELSE
+ IF(I2.EQ.0) THEN
+ I2=I
+ ELSE
+ CALL PYERRM(16,'(PY2FRM:) more than one antifermion')
+ ENDIF
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+
+C...Check that event is arranged according to conventions.
+ IF(I1.EQ.0.OR.I2.EQ.0) THEN
+ CALL PYERRM(16,'(PY2FRM:) event contains too few fermions')
+ ENDIF
+ IF(I2.LT.I1) THEN
+ CALL PYERRM(6,'(PY2FRM:) fermions arranged in wrong order')
+ ENDIF
+
+C...Check whether fermion pair is quarks or leptons.
+ IF(IABS(K(I1,2)).LT.10.AND.IABS(K(I2,2)).LT.10) THEN
+ IQL12=1
+ ELSEIF(IABS(K(I1,2)).GT.10.AND.IABS(K(I2,2)).GT.10) THEN
+ IQL12=2
+ ELSE
+ CALL PYERRM(16,'(PY2FRM:) fermion pair inconsistent')
+ ENDIF
+
+C...Decide whether to allow or not photon radiation in showers.
+ MSTJ(41)=2
+ IF(IRAD.EQ.0) MSTJ(41)=1
+
+C...Do colour joining and parton showers.
+ IP1=I1
+ IP2=I2
+ IF(IQL12.EQ.1) THEN
+ IJOIN(1)=IP1
+ IJOIN(2)=IP2
+ CALL PYJOIN(2,IJOIN)
+ ENDIF
+ IF(IQL12.EQ.1.OR.IRAD.EQ.1) THEN
+ PM12S=(P(IP1,4)+P(IP2,4))**2-(P(IP1,1)+P(IP2,1))**2-
+ & (P(IP1,2)+P(IP2,2))**2-(P(IP1,3)+P(IP2,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IP1,IP2,SQRT(MAX(0D0,PM12S)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP1,IP2,SQRT(MAX(0D0,PM12S)))
+ ENDIF
+
+C...Do fragmentation and decays. Possibly except tau decay.
+ IF(ITAU.EQ.0) THEN
+ NTAU=0
+ DO 110 I=1,N
+ IF(IABS(K(I,2)).EQ.15.AND.K(I,1).EQ.1) THEN
+ NTAU=NTAU+1
+ INTAU(NTAU)=I
+ K(I,1)=11
+ ENDIF
+ 110 CONTINUE
+ ENDIF
+ CALL PYEXEC
+ IF(ITAU.EQ.0) THEN
+ DO 120 I=1,NTAU
+ K(INTAU(I),1)=1
+ 120 CONTINUE
+ ENDIF
+
+C...Call PYHEPC to convert output from PYJETS to HEPEVT common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(1)
+ ENDIF
+
+ END
+
+C*********************************************************************
+
+C...PY4FRM
+C...An interface from a four-fermion generator to include
+C...parton showers and hadronization.
+
+ SUBROUTINE PY4FRM(ATOTSQ,A1SQ,A2SQ,ISTRAT,IRAD,ITAU,ICOM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION IJOIN(2),INTAU(4)
+
+C...Call PYHEPC to convert input from HEPEVT to PYJETS common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(2)
+ ENDIF
+
+C...Loop through entries and pick up all final fermions/antifermions.
+ I1=0
+ I2=0
+ I3=0
+ I4=0
+ DO 100 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 100
+ KFA=IABS(K(I,2))
+ IF((KFA.GE.1.AND.KFA.LE.6).OR.(KFA.GE.11.AND.KFA.LE.16)) THEN
+ IF(K(I,2).GT.0) THEN
+ IF(I1.EQ.0) THEN
+ I1=I
+ ELSEIF(I3.EQ.0) THEN
+ I3=I
+ ELSE
+ CALL PYERRM(16,'(PY4FRM:) more than two fermions')
+ ENDIF
+ ELSE
+ IF(I2.EQ.0) THEN
+ I2=I
+ ELSEIF(I4.EQ.0) THEN
+ I4=I
+ ELSE
+ CALL PYERRM(16,'(PY4FRM:) more than two antifermions')
+ ENDIF
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+
+C...Check that event is arranged according to conventions.
+ IF(I3.EQ.0.OR.I4.EQ.0) THEN
+ CALL PYERRM(16,'(PY4FRM:) event contains too few fermions')
+ ENDIF
+ IF(I2.LT.I1.OR.I3.LT.I2.OR.I4.LT.I3) THEN
+ CALL PYERRM(6,'(PY4FRM:) fermions arranged in wrong order')
+ ENDIF
+
+C...Check which fermion pairs are quarks and which leptons.
+ IF(IABS(K(I1,2)).LT.10.AND.IABS(K(I2,2)).LT.10) THEN
+ IQL12=1
+ ELSEIF(IABS(K(I1,2)).GT.10.AND.IABS(K(I2,2)).GT.10) THEN
+ IQL12=2
+ ELSE
+ CALL PYERRM(16,'(PY4FRM:) first fermion pair inconsistent')
+ ENDIF
+ IF(IABS(K(I3,2)).LT.10.AND.IABS(K(I4,2)).LT.10) THEN
+ IQL34=1
+ ELSEIF(IABS(K(I3,2)).GT.10.AND.IABS(K(I4,2)).GT.10) THEN
+ IQL34=2
+ ELSE
+ CALL PYERRM(16,'(PY4FRM:) second fermion pair inconsistent')
+ ENDIF
+
+C...Decide whether to allow or not photon radiation in showers.
+ MSTJ(41)=2
+ IF(IRAD.EQ.0) MSTJ(41)=1
+
+C...Decide on dipole pairing.
+ IP1=I1
+ IP2=I2
+ IP3=I3
+ IP4=I4
+ IF(IQL12.EQ.IQL34) THEN
+ R1SQ=A1SQ
+ R2SQ=A2SQ
+ DELTA=ATOTSQ-A1SQ-A2SQ
+ IF(ISTRAT.EQ.1) THEN
+ IF(DELTA.GT.0D0) R1SQ=R1SQ+DELTA
+ IF(DELTA.LT.0D0) R2SQ=MAX(0D0,R2SQ+DELTA)
+ ELSEIF(ISTRAT.EQ.2) THEN
+ IF(DELTA.GT.0D0) R2SQ=R2SQ+DELTA
+ IF(DELTA.LT.0D0) R1SQ=MAX(0D0,R1SQ+DELTA)
+ ENDIF
+ IF(R2SQ.GT.PYR(0)*(R1SQ+R2SQ)) THEN
+ IP2=I4
+ IP4=I2
+ ENDIF
+ ENDIF
+
+C...If colour reconnection then bookkeep W+W- or Z0Z0
+C...and copy q qbar q qbar consecutively.
+ IF(MSTP(115).GE.1.AND.IQL12.EQ.1.AND.IQL34.EQ.1) THEN
+ K(N+1,1)=11
+ K(N+1,3)=IP1
+ K(N+1,4)=N+3
+ K(N+1,5)=N+4
+ K(N+2,1)=11
+ K(N+2,3)=IP3
+ K(N+2,4)=N+5
+ K(N+2,5)=N+6
+ IF(K(IP1,2)+K(IP2,2).EQ.0) THEN
+ K(N+1,2)=23
+ K(N+2,2)=23
+ MINT(1)=22
+ ELSEIF(PYCHGE(K(IP1,2)).GT.0) THEN
+ K(N+1,2)=24
+ K(N+2,2)=-24
+ MINT(1)=25
+ ELSE
+ K(N+1,2)=-24
+ K(N+2,2)=24
+ MINT(1)=25
+ ENDIF
+ DO 110 J=1,5
+ K(N+3,J)=K(IP1,J)
+ K(N+4,J)=K(IP2,J)
+ K(N+5,J)=K(IP3,J)
+ K(N+6,J)=K(IP4,J)
+ P(N+1,J)=P(IP1,J)+P(IP2,J)
+ P(N+2,J)=P(IP3,J)+P(IP4,J)
+ P(N+3,J)=P(IP1,J)
+ P(N+4,J)=P(IP2,J)
+ P(N+5,J)=P(IP3,J)
+ P(N+6,J)=P(IP4,J)
+ V(N+1,J)=V(IP1,J)
+ V(N+2,J)=V(IP3,J)
+ V(N+3,J)=V(IP1,J)
+ V(N+4,J)=V(IP2,J)
+ V(N+5,J)=V(IP3,J)
+ V(N+6,J)=V(IP4,J)
+ 110 CONTINUE
+ P(N+1,5)=SQRT(MAX(0D0,P(N+1,4)**2-P(N+1,1)**2-P(N+1,2)**2-
+ & P(N+1,3)**2))
+ P(N+2,5)=SQRT(MAX(0D0,P(N+2,4)**2-P(N+2,1)**2-P(N+2,2)**2-
+ & P(N+2,3)**2))
+ K(N+3,3)=N+1
+ K(N+4,3)=N+1
+ K(N+5,3)=N+2
+ K(N+6,3)=N+2
+C...Remove original q qbar q qbar and update counters.
+ K(IP1,1)=K(IP1,1)+10
+ K(IP2,1)=K(IP2,1)+10
+ K(IP3,1)=K(IP3,1)+10
+ K(IP4,1)=K(IP4,1)+10
+ IW1=N+1
+ IW2=N+2
+ NSD1=N+2
+ IP1=N+3
+ IP2=N+4
+ IP3=N+5
+ IP4=N+6
+ N=N+6
+ ENDIF
+
+C...Do colour joinings and parton showers.
+ IF(IQL12.EQ.1) THEN
+ IJOIN(1)=IP1
+ IJOIN(2)=IP2
+ CALL PYJOIN(2,IJOIN)
+ ENDIF
+ IF(IQL12.EQ.1.OR.IRAD.EQ.1) THEN
+ PM12S=(P(IP1,4)+P(IP2,4))**2-(P(IP1,1)+P(IP2,1))**2-
+ & (P(IP1,2)+P(IP2,2))**2-(P(IP1,3)+P(IP2,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IP1,IP2,SQRT(MAX(0D0,PM12S)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP1,IP2,SQRT(MAX(0D0,PM12S)))
+ ENDIF
+ NAFT1=N
+ IF(IQL34.EQ.1) THEN
+ IJOIN(1)=IP3
+ IJOIN(2)=IP4
+ CALL PYJOIN(2,IJOIN)
+ ENDIF
+ IF(IQL34.EQ.1.OR.IRAD.EQ.1) THEN
+ PM34S=(P(IP3,4)+P(IP4,4))**2-(P(IP3,1)+P(IP4,1))**2-
+ & (P(IP3,2)+P(IP4,2))**2-(P(IP3,3)+P(IP4,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IP3,IP4,SQRT(MAX(0D0,PM34S)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP3,IP4,SQRT(MAX(0D0,PM34S)))
+ ENDIF
+
+C...Optionally do colour reconnection.
+ MINT(32)=0
+ MSTI(32)=0
+ IF(MSTP(115).GE.1.AND.IQL12.EQ.1.AND.IQL34.EQ.1) THEN
+ CALL PYRECO(IW1,IW2,NSD1,NAFT1)
+ MSTI(32)=MINT(32)
+ ENDIF
+
+C...Do fragmentation and decays. Possibly except tau decay.
+ IF(ITAU.EQ.0) THEN
+ NTAU=0
+ DO 120 I=1,N
+ IF(IABS(K(I,2)).EQ.15.AND.K(I,1).EQ.1) THEN
+ NTAU=NTAU+1
+ INTAU(NTAU)=I
+ K(I,1)=11
+ ENDIF
+ 120 CONTINUE
+ ENDIF
+ CALL PYEXEC
+ IF(ITAU.EQ.0) THEN
+ DO 130 I=1,NTAU
+ K(INTAU(I),1)=1
+ 130 CONTINUE
+ ENDIF
+
+C...Call PYHEPC to convert output from PYJETS to HEPEVT common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(1)
+ ENDIF
+
+ END
+
+C*********************************************************************
+
+C...PY6FRM
+C...An interface from a six-fermion generator to include
+C...parton showers and hadronization.
+
+ SUBROUTINE PY6FRM(P12,P13,P21,P23,P31,P32,PTOP,IRAD,ITAU,ICOM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYJETS/,/PYDAT1/
+C...Local arrays.
+ DIMENSION IJOIN(2),INTAU(6),BETA(3),BETAO(3),BETAN(3)
+
+C...Call PYHEPC to convert input from HEPEVT to PYJETS common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(2)
+ ENDIF
+
+C...Loop through entries and pick up all final fermions/antifermions.
+ I1=0
+ I2=0
+ I3=0
+ I4=0
+ I5=0
+ I6=0
+ DO 100 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 100
+ KFA=IABS(K(I,2))
+ IF((KFA.GE.1.AND.KFA.LE.6).OR.(KFA.GE.11.AND.KFA.LE.16)) THEN
+ IF(K(I,2).GT.0) THEN
+ IF(I1.EQ.0) THEN
+ I1=I
+ ELSEIF(I3.EQ.0) THEN
+ I3=I
+ ELSEIF(I5.EQ.0) THEN
+ I5=I
+ ELSE
+ CALL PYERRM(16,'(PY6FRM:) more than three fermions')
+ ENDIF
+ ELSE
+ IF(I2.EQ.0) THEN
+ I2=I
+ ELSEIF(I4.EQ.0) THEN
+ I4=I
+ ELSEIF(I6.EQ.0) THEN
+ I6=I
+ ELSE
+ CALL PYERRM(16,'(PY6FRM:) more than three antifermions')
+ ENDIF
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+
+C...Check that event is arranged according to conventions.
+ IF(I5.EQ.0.OR.I6.EQ.0) THEN
+ CALL PYERRM(16,'(PY6FRM:) event contains too few fermions')
+ ENDIF
+ IF(I2.LT.I1.OR.I3.LT.I2.OR.I4.LT.I3.OR.I5.LT.I4.OR.I6.LT.I5) THEN
+ CALL PYERRM(6,'(PY6FRM:) fermions arranged in wrong order')
+ ENDIF
+
+C...Check which fermion pairs are quarks and which leptons.
+ IF(IABS(K(I1,2)).LT.10.AND.IABS(K(I2,2)).LT.10) THEN
+ IQL12=1
+ ELSEIF(IABS(K(I1,2)).GT.10.AND.IABS(K(I2,2)).GT.10) THEN
+ IQL12=2
+ ELSE
+ CALL PYERRM(16,'(PY6FRM:) first fermion pair inconsistent')
+ ENDIF
+ IF(IABS(K(I3,2)).LT.10.AND.IABS(K(I4,2)).LT.10) THEN
+ IQL34=1
+ ELSEIF(IABS(K(I3,2)).GT.10.AND.IABS(K(I4,2)).GT.10) THEN
+ IQL34=2
+ ELSE
+ CALL PYERRM(16,'(PY6FRM:) second fermion pair inconsistent')
+ ENDIF
+ IF(IABS(K(I5,2)).LT.10.AND.IABS(K(I6,2)).LT.10) THEN
+ IQL56=1
+ ELSEIF(IABS(K(I5,2)).GT.10.AND.IABS(K(I6,2)).GT.10) THEN
+ IQL56=2
+ ELSE
+ CALL PYERRM(16,'(PY6FRM:) third fermion pair inconsistent')
+ ENDIF
+
+C...Decide whether to allow or not photon radiation in showers.
+ MSTJ(41)=2
+ IF(IRAD.EQ.0) MSTJ(41)=1
+
+C...Allow dipole pairings only among leptons and quarks separately.
+ P12D=P12
+ P13D=0D0
+ IF(IQL34.EQ.IQL56) P13D=P13
+ P21D=0D0
+ IF(IQL12.EQ.IQL34) P21D=P21
+ P23D=0D0
+ IF(IQL12.EQ.IQL34.AND.IQL12.EQ.IQL56) P23D=P23
+ P31D=0D0
+ IF(IQL12.EQ.IQL34.AND.IQL12.EQ.IQL56) P31D=P31
+ P32D=0D0
+ IF(IQL12.EQ.IQL56) P32D=P32
+
+C...Decide whether t+tbar.
+ ITOP=0
+ IF(PYR(0).LT.PTOP) THEN
+ ITOP=1
+
+C...If t+tbar: reconstruct t's.
+ IT=N+1
+ ITB=N+2
+ DO 110 J=1,5
+ K(IT,J)=0
+ K(ITB,J)=0
+ P(IT,J)=P(I1,J)+P(I3,J)+P(I4,J)
+ P(ITB,J)=P(I2,J)+P(I5,J)+P(I6,J)
+ V(IT,J)=0D0
+ V(ITB,J)=0D0
+ 110 CONTINUE
+ K(IT,1)=1
+ K(ITB,1)=1
+ K(IT,2)=6
+ K(ITB,2)=-6
+ P(IT,5)=SQRT(MAX(0D0,P(IT,4)**2-P(IT,1)**2-P(IT,2)**2-
+ & P(IT,3)**2))
+ P(ITB,5)=SQRT(MAX(0D0,P(ITB,4)**2-P(ITB,1)**2-P(ITB,2)**2-
+ & P(ITB,3)**2))
+ N=N+2
+
+C...If t+tbar: colour join t's and let them shower.
+ IJOIN(1)=IT
+ IJOIN(2)=ITB
+ CALL PYJOIN(2,IJOIN)
+ PMTTS=(P(IT,4)+P(ITB,4))**2-(P(IT,1)+P(ITB,1))**2-
+ & (P(IT,2)+P(ITB,2))**2-(P(IT,3)+P(ITB,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IT,ITB,SQRT(MAX(0D0,PMTTS)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IT,ITB,SQRT(MAX(0D0,PMTTS)))
+C...If t+tbar: pick up the t's after shower.
+ ITNEW=IT
+ ITBNEW=ITB
+ DO 120 I=ITB+1,N
+ IF(K(I,2).EQ.6) ITNEW=I
+ IF(K(I,2).EQ.-6) ITBNEW=I
+ 120 CONTINUE
+
+C...If t+tbar: loop over two top systems.
+ DO 200 IT1=1,2
+ IF(IT1.EQ.1) THEN
+ ITO=IT
+ ITN=ITNEW
+ IBO=I1
+ IW1=I3
+ IW2=I4
+ ELSE
+ ITO=ITB
+ ITN=ITBNEW
+ IBO=I2
+ IW1=I5
+ IW2=I6
+ ENDIF
+ IF(IABS(K(IBO,2)).NE.5) CALL PYERRM(6,
+ & '(PY6FRM:) not b in t decay')
+
+C...If t+tbar: find boost from original to new top frame.
+ DO 130 J=1,3
+ BETAO(J)=P(ITO,J)/P(ITO,4)
+ BETAN(J)=P(ITN,J)/P(ITN,4)
+ 130 CONTINUE
+
+C...If t+tbar: boost copy of b by t shower and connect it in colour.
+ N=N+1
+ IB=N
+ K(IB,1)=3
+ K(IB,2)=K(IBO,2)
+ K(IB,3)=ITN
+ DO 140 J=1,5
+ P(IB,J)=P(IBO,J)
+ V(IB,J)=0D0
+ 140 CONTINUE
+ CALL PYROBO(IB,IB,0D0,0D0,-BETAO(1),-BETAO(2),-BETAO(3))
+ CALL PYROBO(IB,IB,0D0,0D0,BETAN(1),BETAN(2),BETAN(3))
+ K(IB,4)=MSTU(5)*ITN
+ K(IB,5)=MSTU(5)*ITN
+ K(ITN,4)=K(ITN,4)+IB
+ K(ITN,5)=K(ITN,5)+IB
+ K(ITN,1)=K(ITN,1)+10
+ K(IBO,1)=K(IBO,1)+10
+
+C...If t+tbar: construct W recoiling against b.
+ N=N+1
+ IW=N
+ DO 150 J=1,5
+ K(IW,J)=0
+ V(IW,J)=0D0
+ 150 CONTINUE
+ K(IW,1)=1
+ KCHW=PYCHGE(K(IW1,2))+PYCHGE(K(IW2,2))
+ IF(IABS(KCHW).EQ.3) THEN
+ K(IW,2)=ISIGN(24,KCHW)
+ ELSE
+ CALL PYERRM(16,'(PY6FRM:) fermion pair inconsistent with W')
+ ENDIF
+ K(IW,3)=IW1
+
+C...If t+tbar: construct W momentum, including boost by t shower.
+ DO 160 J=1,4
+ P(IW,J)=P(IW1,J)+P(IW2,J)
+ 160 CONTINUE
+ P(IW,5)=SQRT(MAX(0D0,P(IW,4)**2-P(IW,1)**2-P(IW,2)**2-
+ & P(IW,3)**2))
+ CALL PYROBO(IW,IW,0D0,0D0,-BETAO(1),-BETAO(2),-BETAO(3))
+ CALL PYROBO(IW,IW,0D0,0D0,BETAN(1),BETAN(2),BETAN(3))
+
+C...If t+tbar: boost b and W to top rest frame.
+ DO 170 J=1,3
+ BETA(J)=(P(IB,J)+P(IW,J))/(P(IB,4)+P(IW,4))
+ 170 CONTINUE
+ CALL PYROBO(IB,IB,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+ CALL PYROBO(IW,IW,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+
+C...If t+tbar: let b shower and pick up modified W.
+ PMTS=(P(IB,4)+P(IW,4))**2-(P(IB,1)+P(IW,1))**2-
+ & (P(IB,2)+P(IW,2))**2-(P(IB,3)+P(IW,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IB,IW,SQRT(MAX(0D0,PMTS)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IB,IW,SQRT(MAX(0D0,PMTS)))
+ DO 180 I=IW,N
+ IF(IABS(K(I,2)).EQ.24) IWM=I
+ 180 CONTINUE
+
+C...If t+tbar: take copy of W decay products.
+ DO 190 J=1,5
+ K(N+1,J)=K(IW1,J)
+ P(N+1,J)=P(IW1,J)
+ V(N+1,J)=V(IW1,J)
+ K(N+2,J)=K(IW2,J)
+ P(N+2,J)=P(IW2,J)
+ V(N+2,J)=V(IW2,J)
+ 190 CONTINUE
+ K(IW1,1)=K(IW1,1)+10
+ K(IW2,1)=K(IW2,1)+10
+ K(IWM,1)=K(IWM,1)+10
+ K(IWM,4)=N+1
+ K(IWM,5)=N+2
+ K(N+1,3)=IWM
+ K(N+2,3)=IWM
+ IF(IT1.EQ.1) THEN
+ I3=N+1
+ I4=N+2
+ ELSE
+ I5=N+1
+ I6=N+2
+ ENDIF
+ N=N+2
+
+C...If t+tbar: boost W decay products, first by effects of t shower,
+C...then by those of b shower. b and its shower simple boost back.
+ CALL PYROBO(N-1,N,0D0,0D0,-BETAO(1),-BETAO(2),-BETAO(3))
+ CALL PYROBO(N-1,N,0D0,0D0,BETAN(1),BETAN(2),BETAN(3))
+ CALL PYROBO(N-1,N,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+ CALL PYROBO(N-1,N,0D0,0D0,-P(IW,1)/P(IW,4),
+ & -P(IW,2)/P(IW,4),-P(IW,3)/P(IW,4))
+ CALL PYROBO(N-1,N,0D0,0D0,P(IWM,1)/P(IWM,4),
+ & P(IWM,2)/P(IWM,4),P(IWM,3)/P(IWM,4))
+ CALL PYROBO(IB,IB,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ CALL PYROBO(IW,N,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ 200 CONTINUE
+ ENDIF
+
+C...Decide on dipole pairing.
+ IP1=I1
+ IP3=I3
+ IP5=I5
+ PRN=PYR(0)*(P12D+P13D+P21D+P23D+P31D+P32D)
+ IF(ITOP.EQ.1.OR.PRN.LT.P12D) THEN
+ IP2=I2
+ IP4=I4
+ IP6=I6
+ ELSEIF(PRN.LT.P12D+P13D) THEN
+ IP2=I2
+ IP4=I6
+ IP6=I4
+ ELSEIF(PRN.LT.P12D+P13D+P21D) THEN
+ IP2=I4
+ IP4=I2
+ IP6=I6
+ ELSEIF(PRN.LT.P12D+P13D+P21D+P23D) THEN
+ IP2=I4
+ IP4=I6
+ IP6=I2
+ ELSEIF(PRN.LT.P12D+P13D+P21D+P23D+P31D) THEN
+ IP2=I6
+ IP4=I2
+ IP6=I4
+ ELSE
+ IP2=I6
+ IP4=I4
+ IP6=I2
+ ENDIF
+
+C...Do colour joinings and parton showers
+C...(except ones already made for t+tbar).
+ IF(ITOP.EQ.0) THEN
+ IF(IQL12.EQ.1) THEN
+ IJOIN(1)=IP1
+ IJOIN(2)=IP2
+ CALL PYJOIN(2,IJOIN)
+ ENDIF
+ IF(IQL12.EQ.1.OR.IRAD.EQ.1) THEN
+ PM12S=(P(IP1,4)+P(IP2,4))**2-(P(IP1,1)+P(IP2,1))**2-
+ & (P(IP1,2)+P(IP2,2))**2-(P(IP1,3)+P(IP2,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IP1,IP2,SQRT(MAX(0D0,PM12S)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP1,IP2,SQRT(MAX(0D0,PM12S)))
+ ENDIF
+ ENDIF
+ IF(IQL34.EQ.1) THEN
+ IJOIN(1)=IP3
+ IJOIN(2)=IP4
+ CALL PYJOIN(2,IJOIN)
+ ENDIF
+ IF(IQL34.EQ.1.OR.IRAD.EQ.1) THEN
+ PM34S=(P(IP3,4)+P(IP4,4))**2-(P(IP3,1)+P(IP4,1))**2-
+ & (P(IP3,2)+P(IP4,2))**2-(P(IP3,3)+P(IP4,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IP3,IP4,SQRT(MAX(0D0,PM34S)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP3,IP4,SQRT(MAX(0D0,PM34S)))
+ ENDIF
+ IF(IQL56.EQ.1) THEN
+ IJOIN(1)=IP5
+ IJOIN(2)=IP6
+ CALL PYJOIN(2,IJOIN)
+ ENDIF
+ IF(IQL56.EQ.1.OR.IRAD.EQ.1) THEN
+ PM56S=(P(IP5,4)+P(IP6,4))**2-(P(IP5,1)+P(IP6,1))**2-
+ & (P(IP5,2)+P(IP6,2))**2-(P(IP5,3)+P(IP6,3))**2
+ if(parj(200).ne.1.) CALL PYSHOW(IP5,IP6,SQRT(MAX(0D0,PM56S)))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP5,IP6,SQRT(MAX(0D0,PM56S)))
+ ENDIF
+
+C...Do fragmentation and decays. Possibly except tau decay.
+ IF(ITAU.EQ.0) THEN
+ NTAU=0
+ DO 210 I=1,N
+ IF(IABS(K(I,2)).EQ.15.AND.K(I,1).EQ.1) THEN
+ NTAU=NTAU+1
+ INTAU(NTAU)=I
+ K(I,1)=11
+ ENDIF
+ 210 CONTINUE
+ ENDIF
+ CALL PYEXEC
+ IF(ITAU.EQ.0) THEN
+ DO 220 I=1,NTAU
+ K(INTAU(I),1)=1
+ 220 CONTINUE
+ ENDIF
+
+C...Call PYHEPC to convert output from PYJETS to HEPEVT common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(1)
+ ENDIF
+
+ END
+
+C*********************************************************************
+
+C...PY4JET
+C...An interface from a four-parton generator to include
+C...parton showers and hadronization.
+
+ SUBROUTINE PY4JET(PMAX,IRAD,ICOM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYJETS/,/PYDAT1/
+C...Local arrays.
+ DIMENSION IJOIN(2),PTOT(4),BETA(3)
+
+C...Call PYHEPC to convert input from HEPEVT to PYJETS common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(2)
+ ENDIF
+
+C...Loop through entries and pick up all final partons.
+ I1=0
+ I2=0
+ I3=0
+ I4=0
+ DO 100 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 100
+ KFA=IABS(K(I,2))
+ IF((KFA.GE.1.AND.KFA.LE.6).OR.KFA.EQ.21) THEN
+ IF(K(I,2).GT.0.AND.K(I,2).LE.6) THEN
+ IF(I1.EQ.0) THEN
+ I1=I
+ ELSEIF(I3.EQ.0) THEN
+ I3=I
+ ELSE
+ CALL PYERRM(16,'(PY4JET:) more than two quarks')
+ ENDIF
+ ELSEIF(K(I,2).LT.0) THEN
+ IF(I2.EQ.0) THEN
+ I2=I
+ ELSEIF(I4.EQ.0) THEN
+ I4=I
+ ELSE
+ CALL PYERRM(16,'(PY4JET:) more than two antiquarks')
+ ENDIF
+ ELSE
+ IF(I3.EQ.0) THEN
+ I3=I
+ ELSEIF(I4.EQ.0) THEN
+ I4=I
+ ELSE
+ CALL PYERRM(16,'(PY4JET:) more than two gluons')
+ ENDIF
+ ENDIF
+ ENDIF
+ 100 CONTINUE
+
+C...Check that event is arranged according to conventions.
+ IF(I1.EQ.0.OR.I2.EQ.0.OR.I3.EQ.0.OR.I4.EQ.0) THEN
+ CALL PYERRM(16,'(PY4JET:) event contains too few partons')
+ ENDIF
+ IF(I2.LT.I1.OR.I3.LT.I2.OR.I4.LT.I3) THEN
+ CALL PYERRM(6,'(PY4JET:) partons arranged in wrong order')
+ ENDIF
+
+C...Check whether second pair are quarks or gluons.
+ IF(IABS(K(I3,2)).LT.10.AND.IABS(K(I4,2)).LT.10) THEN
+ IQG34=1
+ ELSEIF(K(I3,2).EQ.21.AND.K(I4,2).EQ.21) THEN
+ IQG34=2
+ ELSE
+ CALL PYERRM(16,'(PY4JET:) second parton pair inconsistent')
+ ENDIF
+
+C...Boost partons to their cm frame.
+ DO 110 J=1,4
+ PTOT(J)=P(I1,J)+P(I2,J)+P(I3,J)+P(I4,J)
+ 110 CONTINUE
+ ECM=SQRT(MAX(0D0,PTOT(4)**2-PTOT(1)**2-PTOT(2)**2-PTOT(3)**2))
+ DO 120 J=1,3
+ BETA(J)=PTOT(J)/PTOT(4)
+ 120 CONTINUE
+ CALL PYROBO(I1,I1,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+ CALL PYROBO(I2,I2,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+ CALL PYROBO(I3,I3,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+ CALL PYROBO(I4,I4,0D0,0D0,-BETA(1),-BETA(2),-BETA(3))
+ NSAV=N
+
+C...Decide and set up shower history for q qbar q' qbar' events.
+ IF(IQG34.EQ.1) THEN
+ W1=PY4JTW(0,I1,I3,I4)
+ W2=PY4JTW(0,I2,I3,I4)
+ IF(W1.GT.PYR(0)*(W1+W2)) THEN
+ CALL PY4JTS(0,I1,I3,I4,I2,QMAX)
+ ELSE
+ CALL PY4JTS(0,I2,I3,I4,I1,QMAX)
+ ENDIF
+
+C...Decide and set up shower history for q qbar g g events.
+ ELSE
+ W1=PY4JTW(I1,I3,I2,I4)
+ W2=PY4JTW(I1,I4,I2,I3)
+ W3=PY4JTW(0,I3,I1,I4)
+ W4=PY4JTW(0,I4,I1,I3)
+ W5=PY4JTW(0,I3,I2,I4)
+ W6=PY4JTW(0,I4,I2,I3)
+ W7=PY4JTW(0,I1,I3,I4)
+ W8=PY4JTW(0,I2,I3,I4)
+ WR=(W1+W2+W3+W4+W5+W6+W7+W8)*PYR(0)
+ IF(W1.GT.WR) THEN
+ CALL PY4JTS(I1,I3,I2,I4,0,QMAX)
+ ELSEIF(W1+W2.GT.WR) THEN
+ CALL PY4JTS(I1,I4,I2,I3,0,QMAX)
+ ELSEIF(W1+W2+W3.GT.WR) THEN
+ CALL PY4JTS(0,I3,I1,I4,I2,QMAX)
+ ELSEIF(W1+W2+W3+W4.GT.WR) THEN
+ CALL PY4JTS(0,I4,I1,I3,I2,QMAX)
+ ELSEIF(W1+W2+W3+W4+W5.GT.WR) THEN
+ CALL PY4JTS(0,I3,I2,I4,I1,QMAX)
+ ELSEIF(W1+W2+W3+W4+W5+W6.GT.WR) THEN
+ CALL PY4JTS(0,I4,I2,I3,I1,QMAX)
+ ELSEIF(W1+W2+W3+W4+W5+W6+W7.GT.WR) THEN
+ CALL PY4JTS(0,I1,I3,I4,I2,QMAX)
+ ELSE
+ CALL PY4JTS(0,I2,I3,I4,I1,QMAX)
+ ENDIF
+ ENDIF
+
+C...Boost back original partons and mark them as deleted.
+ CALL PYROBO(I1,I1,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ CALL PYROBO(I2,I2,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ CALL PYROBO(I3,I3,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ CALL PYROBO(I4,I4,0D0,0D0,BETA(1),BETA(2),BETA(3))
+ K(I1,1)=K(I1,1)+10
+ K(I2,1)=K(I2,1)+10
+ K(I3,1)=K(I3,1)+10
+ K(I4,1)=K(I4,1)+10
+
+C...Rotate shower initiating partons to be along z axis.
+ PHI=PYANGL(P(NSAV+1,1),P(NSAV+1,2))
+ CALL PYROBO(NSAV+1,NSAV+6,0D0,-PHI,0D0,0D0,0D0)
+ THE=PYANGL(P(NSAV+1,3),P(NSAV+1,1))
+ CALL PYROBO(NSAV+1,NSAV+6,-THE,0D0,0D0,0D0,0D0)
+
+C...Set up copy of shower initiating partons as on mass shell.
+ DO 140 I=N+1,N+2
+ DO 130 J=1,5
+ K(I,J)=0
+ P(I,J)=0D0
+ V(I,J)=V(I1,J)
+ 130 CONTINUE
+ K(I,1)=1
+ K(I,2)=K(I-6,2)
+ 140 CONTINUE
+ IF(K(NSAV+1,2).EQ.K(I1,2)) THEN
+ K(N+1,3)=I1
+ P(N+1,5)=P(I1,5)
+ K(N+2,3)=I2
+ P(N+2,5)=P(I2,5)
+ ELSE
+ K(N+1,3)=I2
+ P(N+1,5)=P(I2,5)
+ K(N+2,3)=I1
+ P(N+2,5)=P(I1,5)
+ ENDIF
+ PABS=SQRT(MAX(0D0,(ECM**2-P(N+1,5)**2-P(N+2,5)**2)**2-
+ &(2D0*P(N+1,5)*P(N+2,5))**2))/(2D0*ECM)
+ P(N+1,3)=PABS
+ P(N+1,4)=SQRT(PABS**2+P(N+1,5)**2)
+ P(N+2,3)=-PABS
+ P(N+2,4)=SQRT(PABS**2+P(N+2,5)**2)
+ N=N+2
+
+C...Decide whether to allow or not photon radiation in showers.
+C...Connect up colours.
+ MSTJ(41)=2
+ IF(IRAD.EQ.0) MSTJ(41)=1
+ IJOIN(1)=N-1
+ IJOIN(2)=N
+ CALL PYJOIN(2,IJOIN)
+
+C...Decide on maximum virtuality and do parton shower.
+ IF(PMAX.LT.PARJ(82)) THEN
+ PQMAX=QMAX
+ ELSE
+ PQMAX=PMAX
+ ENDIF
+ if(parj(200).ne.1.) CALL PYSHOW(NSAV+1,-100,PQMAX)
+ if(parj(200).eq.1.) CALL PYSHOWQ(NSAV+1,-100,PQMAX)
+
+C...Rotate and boost back system.
+ CALL PYROBO(NSAV+1,N,THE,PHI,BETA(1),BETA(2),BETA(3))
+
+C...Do fragmentation and decays.
+ CALL PYEXEC
+
+C...Call PYHEPC to convert output from PYJETS to HEPEVT common.
+ IF(ICOM.EQ.0) THEN
+ MSTU(28)=0
+ CALL PYHEPC(1)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PY4JTW
+C...Auxiliary to PY4JET, to evaluate weight of configuration.
+
+ FUNCTION PY4JTW(IA1,IA2,IA3,IA4)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ SAVE /PYJETS/
+
+C...First case: when both original partons radiate.
+C...IA1 /= 0: N+1 -> IA1 + IA2, N+2 -> IA3 + IA4.
+ IF(IA1.NE.0) THEN
+ DO 100 J=1,4
+ P(N+1,J)=P(IA1,J)+P(IA2,J)
+ P(N+2,J)=P(IA3,J)+P(IA4,J)
+ 100 CONTINUE
+ P(N+1,5)=SQRT(MAX(0D0,P(N+1,4)**2-P(N+1,1)**2-P(N+1,2)**2-
+ & P(N+1,3)**2))
+ P(N+2,5)=SQRT(MAX(0D0,P(N+2,4)**2-P(N+2,1)**2-P(N+2,2)**2-
+ & P(N+2,3)**2))
+ Z1=P(IA1,4)/P(N+1,4)
+ WT1=(4D0/3D0)*((1D0+Z1**2)/(1D0-Z1))/(P(N+1,5)**2-P(IA1,5)**2)
+ Z2=P(IA3,4)/P(N+2,4)
+ WT2=(4D0/3D0)*((1D0+Z2**2)/(1D0-Z2))/(P(N+2,5)**2-P(IA3,5)**2)
+
+C...Second case: when one original parton radiates to three.
+C...IA1 = 0: N+1 -> IA2 + N+2, N+2 -> IA3 + IA4.
+ ELSE
+ DO 110 J=1,4
+ P(N+2,J)=P(IA3,J)+P(IA4,J)
+ P(N+1,J)=P(N+2,J)+P(IA2,J)
+ 110 CONTINUE
+ P(N+1,5)=SQRT(MAX(0D0,P(N+1,4)**2-P(N+1,1)**2-P(N+1,2)**2-
+ & P(N+1,3)**2))
+ P(N+2,5)=SQRT(MAX(0D0,P(N+2,4)**2-P(N+2,1)**2-P(N+2,2)**2-
+ & P(N+2,3)**2))
+ IF(K(IA2,2).EQ.21) THEN
+ Z1=P(N+2,4)/P(N+1,4)
+ WT1=(4D0/3D0)*((1D0+Z1**2)/(1D0-Z1))/(P(N+1,5)**2-
+ & P(IA3,5)**2)
+ ELSE
+ Z1=P(IA2,4)/P(N+1,4)
+ WT1=(4D0/3D0)*((1D0+Z1**2)/(1D0-Z1))/(P(N+1,5)**2-
+ & P(IA2,5)**2)
+ ENDIF
+ Z2=P(IA3,4)/P(N+2,4)
+ IF(K(IA2,2).EQ.21) THEN
+ WT2=(4D0/3D0)*((1D0+Z2**2)/(1D0-Z2))/(P(N+2,5)**2-
+ & P(IA3,5)**2)
+ ELSEIF(K(IA3,2).EQ.21) THEN
+ WT2=3D0*((1D0-Z2*(1D0-Z2))**2/(Z2*(1D0-Z2)))/P(N+2,5)**2
+ ELSE
+ WT2=0.5D0*(Z2**2+(1D0-Z2)**2)
+ ENDIF
+ ENDIF
+
+C...Total weight.
+ PY4JTW=WT1*WT2
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PY4JTS
+C...Auxiliary to PY4JET, to set up chosen configuration.
+
+ SUBROUTINE PY4JTS(IA1,IA2,IA3,IA4,IA5,QMAX)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ SAVE /PYJETS/
+
+C...Reset info.
+ DO 110 I=N+1,N+6
+ DO 100 J=1,5
+ K(I,J)=0
+ V(I,J)=V(IA2,J)
+ 100 CONTINUE
+ K(I,1)=16
+ 110 CONTINUE
+
+C...First case: when both original partons radiate.
+C...N+1 -> (IA1=N+3) + (IA2=N+4), N+2 -> (IA3=N+5) + (IA4=N+6).
+ IF(IA1.NE.0) THEN
+
+C...Set up flavour and history pointers for new partons.
+ K(N+1,2)=K(IA1,2)
+ K(N+2,2)=K(IA3,2)
+ K(N+3,2)=K(IA1,2)
+ K(N+4,2)=K(IA2,2)
+ K(N+5,2)=K(IA3,2)
+ K(N+6,2)=K(IA4,2)
+ K(N+1,3)=IA1
+ K(N+1,4)=N+3
+ K(N+1,5)=N+4
+ K(N+2,3)=IA3
+ K(N+2,4)=N+5
+ K(N+2,5)=N+6
+ K(N+3,3)=N+1
+ K(N+4,3)=N+1
+ K(N+5,3)=N+2
+ K(N+6,3)=N+2
+
+C...Set up momenta for new partons.
+ DO 120 J=1,5
+ P(N+1,J)=P(IA1,J)+P(IA2,J)
+ P(N+2,J)=P(IA3,J)+P(IA4,J)
+ P(N+3,J)=P(IA1,J)
+ P(N+4,J)=P(IA2,J)
+ P(N+5,J)=P(IA3,J)
+ P(N+6,J)=P(IA4,J)
+ 120 CONTINUE
+ P(N+1,5)=SQRT(MAX(0D0,P(N+1,4)**2-P(N+1,1)**2-P(N+1,2)**2-
+ & P(N+1,3)**2))
+ P(N+2,5)=SQRT(MAX(0D0,P(N+2,4)**2-P(N+2,1)**2-P(N+2,2)**2-
+ & P(N+2,3)**2))
+ QMAX=MIN(P(N+1,5),P(N+2,5))
+
+C...Second case: q radiates twice.
+C...N+1 -> (IA2=N+4) + N+3, N+3 -> (IA3=N+5) + (IA4=N+6),
+C...IA5=N+2 does not radiate.
+ ELSEIF(K(IA2,2).EQ.21) THEN
+
+C...Set up flavour and history pointers for new partons.
+ K(N+1,2)=K(IA3,2)
+ K(N+2,2)=K(IA5,2)
+ K(N+3,2)=K(IA3,2)
+ K(N+4,2)=K(IA2,2)
+ K(N+5,2)=K(IA3,2)
+ K(N+6,2)=K(IA4,2)
+ K(N+1,3)=IA3
+ K(N+1,4)=N+3
+ K(N+1,5)=N+4
+ K(N+2,3)=IA5
+ K(N+3,3)=N+1
+ K(N+3,4)=N+5
+ K(N+3,5)=N+6
+ K(N+4,3)=N+1
+ K(N+5,3)=N+3
+ K(N+6,3)=N+3
+
+C...Set up momenta for new partons.
+ DO 130 J=1,5
+ P(N+1,J)=P(IA2,J)+P(IA3,J)+P(IA4,J)
+ P(N+2,J)=P(IA5,J)
+ P(N+3,J)=P(IA3,J)+P(IA4,J)
+ P(N+4,J)=P(IA2,J)
+ P(N+5,J)=P(IA3,J)
+ P(N+6,J)=P(IA4,J)
+ 130 CONTINUE
+ P(N+1,5)=SQRT(MAX(0D0,P(N+1,4)**2-P(N+1,1)**2-P(N+1,2)**2-
+ & P(N+1,3)**2))
+ P(N+3,5)=SQRT(MAX(0D0,P(N+3,4)**2-P(N+3,1)**2-P(N+3,2)**2-
+ & P(N+3,3)**2))
+ QMAX=P(N+3,5)
+
+C...Third case: q radiates g, g branches.
+C...N+1 -> (IA2=N+3) + N+4, N+4 -> (IA3=N+5) + (IA4=N+6),
+C...IA5=N+2 does not radiate.
+ ELSE
+
+C...Set up flavour and history pointers for new partons.
+ K(N+1,2)=K(IA2,2)
+ K(N+2,2)=K(IA5,2)
+ K(N+3,2)=K(IA2,2)
+ K(N+4,2)=21
+ K(N+5,2)=K(IA3,2)
+ K(N+6,2)=K(IA4,2)
+ K(N+1,3)=IA2
+ K(N+1,4)=N+3
+ K(N+1,5)=N+4
+ K(N+2,3)=IA5
+ K(N+3,3)=N+1
+ K(N+4,3)=N+1
+ K(N+4,4)=N+5
+ K(N+4,5)=N+6
+ K(N+5,3)=N+4
+ K(N+6,3)=N+4
+
+C...Set up momenta for new partons.
+ DO 140 J=1,5
+ P(N+1,J)=P(IA2,J)+P(IA3,J)+P(IA4,J)
+ P(N+2,J)=P(IA5,J)
+ P(N+3,J)=P(IA2,J)
+ P(N+4,J)=P(IA3,J)+P(IA4,J)
+ P(N+5,J)=P(IA3,J)
+ P(N+6,J)=P(IA4,J)
+ 140 CONTINUE
+ P(N+1,5)=SQRT(MAX(0D0,P(N+1,4)**2-P(N+1,1)**2-P(N+1,2)**2-
+ & P(N+1,3)**2))
+ P(N+4,5)=SQRT(MAX(0D0,P(N+4,4)**2-P(N+4,1)**2-P(N+4,2)**2-
+ & P(N+4,3)**2))
+ QMAX=P(N+4,5)
+
+ ENDIF
+ N=N+6
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYJOIN
+C...Connects a sequence of partons with colour flow indices,
+C...as required for subsequent shower evolution (or other operations).
+
+ SUBROUTINE PYJOIN(NJOIN,IJOIN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local array.
+ DIMENSION IJOIN(*)
+
+C...Check that partons are of right types to be connected.
+ IF(NJOIN.LT.2) GOTO 120
+ KQSUM=0
+ DO 100 IJN=1,NJOIN
+ I=IJOIN(IJN)
+ IF(I.LE.0.OR.I.GT.N) GOTO 120
+ IF(K(I,1).LT.1.OR.K(I,1).GT.3) GOTO 120
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 120
+ KQ=KCHG(KC,2)*ISIGN(1,K(I,2))
+ IF(KQ.EQ.0) GOTO 120
+ IF(IJN.NE.1.AND.IJN.NE.NJOIN.AND.KQ.NE.2) GOTO 120
+ IF(KQ.NE.2) KQSUM=KQSUM+KQ
+ IF(IJN.EQ.1) KQS=KQ
+ 100 CONTINUE
+ IF(KQSUM.NE.0) GOTO 120
+
+C...Connect the partons sequentially (closing for gluon loop).
+ KCS=(9-KQS)/2
+ IF(KQS.EQ.2) KCS=INT(4.5D0+PYR(0))
+ DO 110 IJN=1,NJOIN
+ I=IJOIN(IJN)
+ K(I,1)=3
+ IF(IJN.NE.1) IP=IJOIN(IJN-1)
+ IF(IJN.EQ.1) IP=IJOIN(NJOIN)
+ IF(IJN.NE.NJOIN) IN=IJOIN(IJN+1)
+ IF(IJN.EQ.NJOIN) IN=IJOIN(1)
+ K(I,KCS)=MSTU(5)*IN
+ K(I,9-KCS)=MSTU(5)*IP
+ IF(IJN.EQ.1.AND.KQS.NE.2) K(I,9-KCS)=0
+ IF(IJN.EQ.NJOIN.AND.KQS.NE.2) K(I,KCS)=0
+ 110 CONTINUE
+
+C...Error exit: no action taken.
+ RETURN
+ 120 CALL PYERRM(12,
+ &'(PYJOIN:) given entries can not be joined by one string')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYGIVE
+C...Sets values of commonblock variables.
+
+ SUBROUTINE PYGIVE(CHIN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ COMMON/PYDATR/MRPY(6),RRPY(100)
+ COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ COMMON/PYINT3/XSFX(2,-40:40),ISIG(1000,3),SIGH(1000)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ COMMON/PYINT5/NGENPD,NGEN(0:500,3),XSEC(0:500,3)
+ COMMON/PYINT6/PROC(0:500)
+ CHARACTER PROC*28
+ COMMON/PYINT7/SIGT(0:6,0:6,0:5)
+ COMMON/PYINT8/XPVMD(-6:6),XPANL(-6:6),XPANH(-6:6),XPBEH(-6:6),
+ &XPDIR(-6:6)
+ COMMON/PYMSSM/IMSS(0:99),RMSS(0:99)
+ COMMON/PYMSRV/RVLAM(3,3,3), RVLAMP(3,3,3), RVLAMB(3,3,3)
+ COMMON/PYTCSM/ITCM(0:99),RTCM(0:99)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYDAT4/,/PYDATR/,
+ &/PYSUBS/,/PYPARS/,/PYINT1/,/PYINT2/,/PYINT3/,/PYINT4/,
+ &/PYINT5/,/PYINT6/,/PYINT7/,/PYINT8/,/PYMSSM/,/PYMSRV/,/PYTCSM/
+C...Local arrays and character variables.
+ CHARACTER CHIN*(*),CHFIX*104,CHBIT*104,CHOLD*8,CHNEW*8,CHOLD2*28,
+ &CHNEW2*28,CHNAM*6,CHVAR(54)*6,CHALP(2)*26,CHIND*8,CHINI*10,
+ &CHINR*16,CHDIG*10
+ DIMENSION MSVAR(54,8)
+
+C...For each variable to be translated give: name,
+C...integer/real/character, no. of indices, lower&upper index bounds.
+ DATA CHVAR/'N','K','P','V','MSTU','PARU','MSTJ','PARJ','KCHG',
+ &'PMAS','PARF','VCKM','MDCY','MDME','BRAT','KFDP','CHAF','MRPY',
+ &'RRPY','MSEL','MSUB','KFIN','CKIN','MSTP','PARP','MSTI','PARI',
+ &'MINT','VINT','ISET','KFPR','COEF','ICOL','XSFX','ISIG','SIGH',
+ &'MWID','WIDS','NGEN','XSEC','PROC','SIGT','XPVMD','XPANL',
+ &'XPANH','XPBEH','XPDIR','IMSS','RMSS','RVLAM','RVLAMP','RVLAMB',
+ &'ITCM','RTCM'/
+ DATA ((MSVAR(I,J),J=1,8),I=1,54)/ 1,7*0, 1,2,1,4000,1,5,2*0,
+ &2,2,1,4000,1,5,2*0, 2,2,1,4000,1,5,2*0, 1,1,1,200,4*0,
+ &2,1,1,200,4*0, 1,1,1,200,4*0, 2,1,1,200,4*0,
+ &1,2,1,500,1,4,2*0, 2,2,1,500,1,4,2*0, 2,1,1,2000,4*0,
+ &2,2,1,4,1,4,2*0, 1,2,1,500,1,3,2*0, 1,2,1,8000,1,2,2*0,
+ &2,1,1,8000,4*0, 1,2,1,8000,1,5,2*0, 3,2,1,500,1,2,2*0,
+ &1,1,1,6,4*0, 2,1,1,100,4*0,
+ &1,7*0, 1,1,1,500,4*0, 1,2,1,2,-40,40,2*0, 2,1,1,200,4*0,
+ &1,1,1,200,4*0, 2,1,1,200,4*0, 1,1,1,200,4*0, 2,1,1,200,4*0,
+ &1,1,1,400,4*0, 2,1,1,400,4*0, 1,1,1,500,4*0,
+ &1,2,1,500,1,2,2*0, 2,2,1,500,1,20,2*0, 1,3,1,40,1,4,1,2,
+ &2,2,1,2,-40,40,2*0, 1,2,1,1000,1,3,2*0, 2,1,1,1000,4*0,
+ &1,1,1,500,4*0, 2,2,1,500,1,5,2*0, 1,2,0,500,1,3,2*0,
+ &2,2,0,500,1,3,2*0, 4,1,0,500,4*0, 2,3,0,6,0,6,0,5,
+ &2,1,-6,6,4*0, 2,1,-6,6,4*0, 2,1,-6,6,4*0,
+ &2,1,-6,6,4*0, 2,1,-6,6,4*0, 1,1,0,99,4*0, 2,1,0,99,4*0,
+ &2,3,1,3,1,3,1,3, 2,3,1,3,1,3,1,3, 2,3,1,3,1,3,1,3,
+ &1,1,0,99,4*0, 2,1,0,99,4*0/
+ DATA CHALP/'abcdefghijklmnopqrstuvwxyz',
+ &'ABCDEFGHIJKLMNOPQRSTUVWXYZ'/, CHDIG/'1234567890'/
+
+C...Length of character variable. Subdivide it into instructions.
+ IF(MSTU(12).NE.12345.AND.CHIN.NE.'mstu(12)=12345'.AND.
+ &CHIN.NE.'MSTU(12)=12345') CALL PYLIST(0)
+ CHBIT=CHIN//' '
+ LBIT=101
+ 100 LBIT=LBIT-1
+ IF(CHBIT(LBIT:LBIT).EQ.' ') GOTO 100
+ LTOT=0
+ DO 110 LCOM=1,LBIT
+ IF(CHBIT(LCOM:LCOM).EQ.' ') GOTO 110
+ LTOT=LTOT+1
+ CHFIX(LTOT:LTOT)=CHBIT(LCOM:LCOM)
+ 110 CONTINUE
+ LLOW=0
+ 120 LHIG=LLOW+1
+ 130 LHIG=LHIG+1
+ IF(LHIG.LE.LTOT.AND.CHFIX(LHIG:LHIG).NE.';') GOTO 130
+ LBIT=LHIG-LLOW-1
+ CHBIT(1:LBIT)=CHFIX(LLOW+1:LHIG-1)
+
+C...Send off decay-mode on/off commands to PYONOF.
+ IONOF=0
+ DO 135 LDIG=1,10
+ IF(CHBIT(1:1).EQ.CHDIG(LDIG:LDIG)) IONOF=1
+ 135 CONTINUE
+ IF(IONOF.EQ.1) THEN
+ CALL PYONOF(CHIN)
+ RETURN
+ ENDIF
+
+C...Peel off any text following exclamation mark.
+ LHIG2=LBIT
+ DO 140 LLOW2=LHIG2,1,-1
+ IF(CHBIT(LLOW2:LLOW2).EQ.'!') LBIT=LLOW2-1
+ 140 CONTINUE
+ IF(LBIT.EQ.0) RETURN
+
+C...Identify commonblock variable.
+ LNAM=1
+ 150 LNAM=LNAM+1
+ IF(CHBIT(LNAM:LNAM).NE.'('.AND.CHBIT(LNAM:LNAM).NE.'='.AND.
+ &LNAM.LE.6) GOTO 150
+ CHNAM=CHBIT(1:LNAM-1)//' '
+ DO 170 LCOM=1,LNAM-1
+ DO 160 LALP=1,26
+ IF(CHNAM(LCOM:LCOM).EQ.CHALP(1)(LALP:LALP)) CHNAM(LCOM:LCOM)=
+ & CHALP(2)(LALP:LALP)
+ 160 CONTINUE
+ 170 CONTINUE
+ IVAR=0
+ DO 180 IV=1,54
+ IF(CHNAM.EQ.CHVAR(IV)) IVAR=IV
+ 180 CONTINUE
+ IF(IVAR.EQ.0) THEN
+ CALL PYERRM(18,'(PYGIVE:) do not recognize variable '//CHNAM)
+ LLOW=LHIG
+ IF(LLOW.LT.LTOT) GOTO 120
+ RETURN
+ ENDIF
+
+C...Identify any indices.
+ I1=0
+ I2=0
+ I3=0
+ NINDX=0
+ IF(CHBIT(LNAM:LNAM).EQ.'(') THEN
+ LIND=LNAM
+ 190 LIND=LIND+1
+ IF(CHBIT(LIND:LIND).NE.')'.AND.CHBIT(LIND:LIND).NE.',') GOTO 190
+ CHIND=' '
+ IF((CHBIT(LNAM+1:LNAM+1).EQ.'C'.OR.CHBIT(LNAM+1:LNAM+1).EQ.'c')
+ & .AND.(IVAR.EQ.9.OR.IVAR.EQ.10.OR.IVAR.EQ.13.OR.IVAR.EQ.17.OR.
+ & IVAR.EQ.37)) THEN
+ CHIND(LNAM-LIND+11:8)=CHBIT(LNAM+2:LIND-1)
+ READ(CHIND,'(I8)') KF
+ I1=PYCOMP(KF)
+ ELSEIF(CHBIT(LNAM+1:LNAM+1).EQ.'C'.OR.CHBIT(LNAM+1:LNAM+1).EQ.
+ & 'c') THEN
+ CALL PYERRM(18,'(PYGIVE:) not allowed to use C index for '//
+ & CHNAM)
+ LLOW=LHIG
+ IF(LLOW.LT.LTOT) GOTO 120
+ RETURN
+ ELSE
+ CHIND(LNAM-LIND+10:8)=CHBIT(LNAM+1:LIND-1)
+ READ(CHIND,'(I8)') I1
+ ENDIF
+ LNAM=LIND
+ IF(CHBIT(LNAM:LNAM).EQ.')') LNAM=LNAM+1
+ NINDX=1
+ ENDIF
+ IF(CHBIT(LNAM:LNAM).EQ.',') THEN
+ LIND=LNAM
+ 200 LIND=LIND+1
+ IF(CHBIT(LIND:LIND).NE.')'.AND.CHBIT(LIND:LIND).NE.',') GOTO 200
+ CHIND=' '
+ CHIND(LNAM-LIND+10:8)=CHBIT(LNAM+1:LIND-1)
+ READ(CHIND,'(I8)') I2
+ LNAM=LIND
+ IF(CHBIT(LNAM:LNAM).EQ.')') LNAM=LNAM+1
+ NINDX=2
+ ENDIF
+ IF(CHBIT(LNAM:LNAM).EQ.',') THEN
+ LIND=LNAM
+ 210 LIND=LIND+1
+ IF(CHBIT(LIND:LIND).NE.')'.AND.CHBIT(LIND:LIND).NE.',') GOTO 210
+ CHIND=' '
+ CHIND(LNAM-LIND+10:8)=CHBIT(LNAM+1:LIND-1)
+ READ(CHIND,'(I8)') I3
+ LNAM=LIND+1
+ NINDX=3
+ ENDIF
+
+C...Check that indices allowed.
+ IERR=0
+ IF(NINDX.NE.MSVAR(IVAR,2)) IERR=1
+ IF(NINDX.GE.1.AND.(I1.LT.MSVAR(IVAR,3).OR.I1.GT.MSVAR(IVAR,4)))
+ &IERR=2
+ IF(NINDX.GE.2.AND.(I2.LT.MSVAR(IVAR,5).OR.I2.GT.MSVAR(IVAR,6)))
+ &IERR=3
+ IF(NINDX.EQ.3.AND.(I3.LT.MSVAR(IVAR,7).OR.I3.GT.MSVAR(IVAR,8)))
+ &IERR=4
+ IF(CHBIT(LNAM:LNAM).NE.'=') IERR=5
+ IF(IERR.GE.1) THEN
+ CALL PYERRM(18,'(PYGIVE:) unallowed indices for '//
+ & CHBIT(1:LNAM-1))
+ LLOW=LHIG
+ IF(LLOW.LT.LTOT) GOTO 120
+ RETURN
+ ENDIF
+
+C...Save old value of variable.
+ IF(IVAR.EQ.1) THEN
+ IOLD=N
+ ELSEIF(IVAR.EQ.2) THEN
+ IOLD=K(I1,I2)
+ ELSEIF(IVAR.EQ.3) THEN
+ ROLD=P(I1,I2)
+ ELSEIF(IVAR.EQ.4) THEN
+ ROLD=V(I1,I2)
+ ELSEIF(IVAR.EQ.5) THEN
+ IOLD=MSTU(I1)
+ ELSEIF(IVAR.EQ.6) THEN
+ ROLD=PARU(I1)
+ ELSEIF(IVAR.EQ.7) THEN
+ IOLD=MSTJ(I1)
+ ELSEIF(IVAR.EQ.8) THEN
+ ROLD=PARJ(I1)
+ ELSEIF(IVAR.EQ.9) THEN
+ IOLD=KCHG(I1,I2)
+ ELSEIF(IVAR.EQ.10) THEN
+ ROLD=PMAS(I1,I2)
+ ELSEIF(IVAR.EQ.11) THEN
+ ROLD=PARF(I1)
+ ELSEIF(IVAR.EQ.12) THEN
+ ROLD=VCKM(I1,I2)
+ ELSEIF(IVAR.EQ.13) THEN
+ IOLD=MDCY(I1,I2)
+ ELSEIF(IVAR.EQ.14) THEN
+ IOLD=MDME(I1,I2)
+ ELSEIF(IVAR.EQ.15) THEN
+ ROLD=BRAT(I1)
+ ELSEIF(IVAR.EQ.16) THEN
+ IOLD=KFDP(I1,I2)
+ ELSEIF(IVAR.EQ.17) THEN
+ CHOLD=CHAF(I1,I2)(1:8)
+ ELSEIF(IVAR.EQ.18) THEN
+ IOLD=MRPY(I1)
+ ELSEIF(IVAR.EQ.19) THEN
+ ROLD=RRPY(I1)
+ ELSEIF(IVAR.EQ.20) THEN
+ IOLD=MSEL
+ ELSEIF(IVAR.EQ.21) THEN
+ IOLD=MSUB(I1)
+ ELSEIF(IVAR.EQ.22) THEN
+ IOLD=KFIN(I1,I2)
+ ELSEIF(IVAR.EQ.23) THEN
+ ROLD=CKIN(I1)
+ ELSEIF(IVAR.EQ.24) THEN
+ IOLD=MSTP(I1)
+ ELSEIF(IVAR.EQ.25) THEN
+ ROLD=PARP(I1)
+ ELSEIF(IVAR.EQ.26) THEN
+ IOLD=MSTI(I1)
+ ELSEIF(IVAR.EQ.27) THEN
+ ROLD=PARI(I1)
+ ELSEIF(IVAR.EQ.28) THEN
+ IOLD=MINT(I1)
+ ELSEIF(IVAR.EQ.29) THEN
+ ROLD=VINT(I1)
+ ELSEIF(IVAR.EQ.30) THEN
+ IOLD=ISET(I1)
+ ELSEIF(IVAR.EQ.31) THEN
+ IOLD=KFPR(I1,I2)
+ ELSEIF(IVAR.EQ.32) THEN
+ ROLD=COEF(I1,I2)
+ ELSEIF(IVAR.EQ.33) THEN
+ IOLD=ICOL(I1,I2,I3)
+ ELSEIF(IVAR.EQ.34) THEN
+ ROLD=XSFX(I1,I2)
+ ELSEIF(IVAR.EQ.35) THEN
+ IOLD=ISIG(I1,I2)
+ ELSEIF(IVAR.EQ.36) THEN
+ ROLD=SIGH(I1)
+ ELSEIF(IVAR.EQ.37) THEN
+ IOLD=MWID(I1)
+ ELSEIF(IVAR.EQ.38) THEN
+ ROLD=WIDS(I1,I2)
+ ELSEIF(IVAR.EQ.39) THEN
+ IOLD=NGEN(I1,I2)
+ ELSEIF(IVAR.EQ.40) THEN
+ ROLD=XSEC(I1,I2)
+ ELSEIF(IVAR.EQ.41) THEN
+ CHOLD2=PROC(I1)
+ ELSEIF(IVAR.EQ.42) THEN
+ ROLD=SIGT(I1,I2,I3)
+ ELSEIF(IVAR.EQ.43) THEN
+ ROLD=XPVMD(I1)
+ ELSEIF(IVAR.EQ.44) THEN
+ ROLD=XPANL(I1)
+ ELSEIF(IVAR.EQ.45) THEN
+ ROLD=XPANH(I1)
+ ELSEIF(IVAR.EQ.46) THEN
+ ROLD=XPBEH(I1)
+ ELSEIF(IVAR.EQ.47) THEN
+ ROLD=XPDIR(I1)
+ ELSEIF(IVAR.EQ.48) THEN
+ IOLD=IMSS(I1)
+ ELSEIF(IVAR.EQ.49) THEN
+ ROLD=RMSS(I1)
+ ELSEIF(IVAR.EQ.50) THEN
+ ROLD=RVLAM(I1,I2,I3)
+ ELSEIF(IVAR.EQ.51) THEN
+ ROLD=RVLAMP(I1,I2,I3)
+ ELSEIF(IVAR.EQ.52) THEN
+ ROLD=RVLAMB(I1,I2,I3)
+ ELSEIF(IVAR.EQ.53) THEN
+ IOLD=ITCM(I1)
+ ELSEIF(IVAR.EQ.54) THEN
+ ROLD=RTCM(I1)
+ ENDIF
+
+C...Print current value of variable. Loop back.
+ IF(LNAM.GE.LBIT) THEN
+ CHBIT(LNAM:14)=' '
+ CHBIT(15:60)=' has the value '
+ IF(MSVAR(IVAR,1).EQ.1) THEN
+ WRITE(CHBIT(51:60),'(I10)') IOLD
+ ELSEIF(MSVAR(IVAR,1).EQ.2) THEN
+ WRITE(CHBIT(47:60),'(F14.5)') ROLD
+ ELSEIF(MSVAR(IVAR,1).EQ.3) THEN
+ CHBIT(53:60)=CHOLD
+ ELSE
+ CHBIT(33:60)=CHOLD
+ ENDIF
+ IF(MSTU(13).GE.1) WRITE(MSTU(11),5000) CHBIT(1:60)
+ LLOW=LHIG
+ IF(LLOW.LT.LTOT) GOTO 120
+ RETURN
+ ENDIF
+
+C...Read in new variable value.
+ IF(MSVAR(IVAR,1).EQ.1) THEN
+ CHINI=' '
+ CHINI(LNAM-LBIT+11:10)=CHBIT(LNAM+1:LBIT)
+ READ(CHINI,'(I10)') INEW
+ ELSEIF(MSVAR(IVAR,1).EQ.2) THEN
+ CHINR=' '
+ CHINR(LNAM-LBIT+17:16)=CHBIT(LNAM+1:LBIT)
+ READ(CHINR,*) RNEW
+ ELSEIF(MSVAR(IVAR,1).EQ.3) THEN
+ CHNEW=CHBIT(LNAM+1:LBIT)//' '
+ ELSE
+ CHNEW2=CHBIT(LNAM+1:LBIT)//' '
+ ENDIF
+
+C...Store new variable value.
+ IF(IVAR.EQ.1) THEN
+ N=INEW
+ ELSEIF(IVAR.EQ.2) THEN
+ K(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.3) THEN
+ P(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.4) THEN
+ V(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.5) THEN
+ MSTU(I1)=INEW
+ ELSEIF(IVAR.EQ.6) THEN
+ PARU(I1)=RNEW
+ ELSEIF(IVAR.EQ.7) THEN
+ MSTJ(I1)=INEW
+ ELSEIF(IVAR.EQ.8) THEN
+ PARJ(I1)=RNEW
+ ELSEIF(IVAR.EQ.9) THEN
+ KCHG(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.10) THEN
+ PMAS(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.11) THEN
+ PARF(I1)=RNEW
+ ELSEIF(IVAR.EQ.12) THEN
+ VCKM(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.13) THEN
+ MDCY(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.14) THEN
+ MDME(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.15) THEN
+ BRAT(I1)=RNEW
+ ELSEIF(IVAR.EQ.16) THEN
+ KFDP(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.17) THEN
+ CHAF(I1,I2)=CHNEW
+ ELSEIF(IVAR.EQ.18) THEN
+ MRPY(I1)=INEW
+ ELSEIF(IVAR.EQ.19) THEN
+ RRPY(I1)=RNEW
+ ELSEIF(IVAR.EQ.20) THEN
+ MSEL=INEW
+ ELSEIF(IVAR.EQ.21) THEN
+ MSUB(I1)=INEW
+ ELSEIF(IVAR.EQ.22) THEN
+ KFIN(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.23) THEN
+ CKIN(I1)=RNEW
+ ELSEIF(IVAR.EQ.24) THEN
+ MSTP(I1)=INEW
+ ELSEIF(IVAR.EQ.25) THEN
+ PARP(I1)=RNEW
+ ELSEIF(IVAR.EQ.26) THEN
+ MSTI(I1)=INEW
+ ELSEIF(IVAR.EQ.27) THEN
+ PARI(I1)=RNEW
+ ELSEIF(IVAR.EQ.28) THEN
+ MINT(I1)=INEW
+ ELSEIF(IVAR.EQ.29) THEN
+ VINT(I1)=RNEW
+ ELSEIF(IVAR.EQ.30) THEN
+ ISET(I1)=INEW
+ ELSEIF(IVAR.EQ.31) THEN
+ KFPR(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.32) THEN
+ COEF(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.33) THEN
+ ICOL(I1,I2,I3)=INEW
+ ELSEIF(IVAR.EQ.34) THEN
+ XSFX(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.35) THEN
+ ISIG(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.36) THEN
+ SIGH(I1)=RNEW
+ ELSEIF(IVAR.EQ.37) THEN
+ MWID(I1)=INEW
+ ELSEIF(IVAR.EQ.38) THEN
+ WIDS(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.39) THEN
+ NGEN(I1,I2)=INEW
+ ELSEIF(IVAR.EQ.40) THEN
+ XSEC(I1,I2)=RNEW
+ ELSEIF(IVAR.EQ.41) THEN
+ PROC(I1)=CHNEW2
+ ELSEIF(IVAR.EQ.42) THEN
+ SIGT(I1,I2,I3)=RNEW
+ ELSEIF(IVAR.EQ.43) THEN
+ XPVMD(I1)=RNEW
+ ELSEIF(IVAR.EQ.44) THEN
+ XPANL(I1)=RNEW
+ ELSEIF(IVAR.EQ.45) THEN
+ XPANH(I1)=RNEW
+ ELSEIF(IVAR.EQ.46) THEN
+ XPBEH(I1)=RNEW
+ ELSEIF(IVAR.EQ.47) THEN
+ XPDIR(I1)=RNEW
+ ELSEIF(IVAR.EQ.48) THEN
+ IMSS(I1)=INEW
+ ELSEIF(IVAR.EQ.49) THEN
+ RMSS(I1)=RNEW
+ ELSEIF(IVAR.EQ.50) THEN
+ RVLAM(I1,I2,I3)=RNEW
+ ELSEIF(IVAR.EQ.51) THEN
+ RVLAMP(I1,I2,I3)=RNEW
+ ELSEIF(IVAR.EQ.52) THEN
+ RVLAMB(I1,I2,I3)=RNEW
+ ELSEIF(IVAR.EQ.53) THEN
+ ITCM(I1)=INEW
+ ELSEIF(IVAR.EQ.54) THEN
+ RTCM(I1)=RNEW
+ ENDIF
+
+C...Write old and new value. Loop back.
+ CHBIT(LNAM:14)=' '
+ CHBIT(15:60)=' changed from to '
+ IF(MSVAR(IVAR,1).EQ.1) THEN
+ WRITE(CHBIT(33:42),'(I10)') IOLD
+ WRITE(CHBIT(51:60),'(I10)') INEW
+ IF(MSTU(13).GE.1) WRITE(MSTU(11),5000) CHBIT(1:60)
+ ELSEIF(MSVAR(IVAR,1).EQ.2) THEN
+ WRITE(CHBIT(29:42),'(F14.5)') ROLD
+ WRITE(CHBIT(47:60),'(F14.5)') RNEW
+ IF(MSTU(13).GE.1) WRITE(MSTU(11),5000) CHBIT(1:60)
+ ELSEIF(MSVAR(IVAR,1).EQ.3) THEN
+ CHBIT(35:42)=CHOLD
+ CHBIT(53:60)=CHNEW
+ IF(MSTU(13).GE.1) WRITE(MSTU(11),5000) CHBIT(1:60)
+ ELSE
+ CHBIT(15:88)=' changed from '//CHOLD2//' to '//CHNEW2
+ IF(MSTU(13).GE.1) WRITE(MSTU(11),5100) CHBIT(1:88)
+ ENDIF
+ LLOW=LHIG
+ IF(LLOW.LT.LTOT) GOTO 120
+
+C...Format statement for output on unit MSTU(11) (by default 6).
+ 5000 FORMAT(5X,A60)
+ 5100 FORMAT(5X,A88)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYONOF
+C...Switches on and off decay channel by search for match.
+
+ SUBROUTINE PYONOF(CHIN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ SAVE /PYDAT1/,/PYDAT3/
+C...Local arrays and character variables.
+ INTEGER KFCMP(10),KFTMP(10)
+ CHARACTER CHIN*(*),CHTMP*104,CHFIX*104,CHMODE*10,CHCODE*8,
+ &CHALP(2)*26
+ DATA CHALP/'abcdefghijklmnopqrstuvwxyz',
+ &'ABCDEFGHIJKLMNOPQRSTUVWXYZ'/
+
+C...Determine length of character variable.
+ CHTMP=CHIN//' '
+ LBEG=0
+ 100 LBEG=LBEG+1
+ IF(CHTMP(LBEG:LBEG).EQ.' ') GOTO 100
+ LEND=LBEG-1
+ 105 LEND=LEND+1
+ IF(LEND.LE.100.AND.CHTMP(LEND:LEND).NE.'!') GOTO 105
+ 110 LEND=LEND-1
+ IF(CHTMP(LEND:LEND).EQ.' ') GOTO 110
+ LEN=1+LEND-LBEG
+ CHFIX(1:LEN)=CHTMP(LBEG:LEND)
+
+C...Find colon separator and particle code.
+ LCOLON=0
+ 120 LCOLON=LCOLON+1
+ IF(CHFIX(LCOLON:LCOLON).NE.':') GOTO 120
+ CHCODE=' '
+ CHCODE(10-LCOLON:8)=CHFIX(1:LCOLON-1)
+ READ(CHCODE,'(I8)',ERR=300) KF
+ KC=PYCOMP(KF)
+
+C...Done if unknown code or no decay channels.
+ IF(KC.EQ.0) THEN
+ CALL PYERRM(18,'(PYONOF:) unrecognized particle '//CHCODE)
+ RETURN
+ ENDIF
+ IDCBEG=MDCY(KC,2)
+ IDCLEN=MDCY(KC,3)
+ IF(IDCBEG.EQ.0.OR.IDCLEN.EQ.0) THEN
+ CALL PYERRM(18,'(PYONOF:) no decay channels for '//CHCODE)
+ RETURN
+ ENDIF
+
+C...Find command name up to blank or equal sign.
+ LSEP=LCOLON
+ 130 LSEP=LSEP+1
+ IF(LSEP.LE.LEN.AND.CHFIX(LSEP:LSEP).NE.' '.AND.
+ &CHFIX(LSEP:LSEP).NE.'=') GOTO 130
+ CHMODE=' '
+ LMODE=LSEP-LCOLON-1
+ CHMODE(1:LMODE)=CHFIX(LCOLON+1:LSEP-1)
+
+C...Convert to uppercase.
+ DO 150 LCOM=1,LMODE
+ DO 140 LALP=1,26
+ IF(CHMODE(LCOM:LCOM).EQ.CHALP(1)(LALP:LALP))
+ & CHMODE(LCOM:LCOM)=CHALP(2)(LALP:LALP)
+ 140 CONTINUE
+ 150 CONTINUE
+
+C...Identify command. Failed if not identified.
+ MODE=0
+ IF(CHMODE.EQ.'ALLOFF') MODE=1
+ IF(CHMODE.EQ.'ALLON') MODE=2
+ IF(CHMODE.EQ.'OFFIFANY') MODE=3
+ IF(CHMODE.EQ.'ONIFANY') MODE=4
+ IF(CHMODE.EQ.'OFFIFALL') MODE=5
+ IF(CHMODE.EQ.'ONIFALL') MODE=6
+ IF(CHMODE.EQ.'OFFIFMATCH') MODE=7
+ IF(CHMODE.EQ.'ONIFMATCH') MODE=8
+ IF(MODE.EQ.0) THEN
+ CALL PYERRM(18,'(PYONOF:) unknown command '//CHMODE)
+ RETURN
+ ENDIF
+
+C...Simple cases when all on or all off.
+ IF(MODE.EQ.1.OR.MODE.EQ.2) THEN
+ WRITE(MSTU(11),1000) KF,CHMODE
+ DO 160 IDC=IDCBEG,IDCBEG+IDCLEN-1
+ IF(MDME(IDC,1).LT.0) GOTO 160
+ MDME(IDC,1)=MODE-1
+ 160 CONTINUE
+ RETURN
+ ENDIF
+
+C...Identify matching list.
+ NCMP=0
+ LBEG=LSEP
+ 170 LBEG=LBEG+1
+ IF(LBEG.GT.LEN) GOTO 190
+ IF(LBEG.LT.LEN.AND.(CHFIX(LBEG:LBEG).EQ.' '.OR.
+ &CHFIX(LBEG:LBEG).EQ.'='.OR.CHFIX(LBEG:LBEG).EQ.',')) GOTO 170
+ LEND=LBEG-1
+ 180 LEND=LEND+1
+ IF(LEND.LT.LEN.AND.CHFIX(LEND:LEND).NE.' '.AND.
+ &CHFIX(LEND:LEND).NE.'='.AND.CHFIX(LEND:LEND).NE.',') GOTO 180
+ IF(LEND.LT.LEN) LEND=LEND-1
+ CHCODE=' '
+ CHCODE(8-LEND+LBEG:8)=CHFIX(LBEG:LEND)
+ READ(CHCODE,'(I8)',ERR=300) KFREAD
+ NCMP=NCMP+1
+ KFCMP(NCMP)=IABS(KFREAD)
+ LBEG=LEND
+ IF(NCMP.LT.10) GOTO 170
+ 190 CONTINUE
+ WRITE(MSTU(11),1100) KF,CHMODE,(KFCMP(ICMP),ICMP=1,NCMP)
+
+C...Only one matching required.
+ IF(MODE.EQ.3.OR.MODE.EQ.4) THEN
+ DO 220 IDC=IDCBEG,IDCBEG+IDCLEN-1
+ IF(MDME(IDC,1).LT.0) GOTO 220
+ DO 210 IKF=1,5
+ KFNOW=IABS(KFDP(IDC,IKF))
+ IF(KFNOW.EQ.0) GOTO 210
+ DO 200 ICMP=1,NCMP
+ IF(KFCMP(ICMP).EQ.KFNOW) THEN
+ MDME(IDC,1)=MODE-3
+ GOTO 220
+ ENDIF
+ 200 CONTINUE
+ 210 CONTINUE
+ 220 CONTINUE
+ RETURN
+ ENDIF
+
+C...Multiple matchings required.
+ DO 260 IDC=IDCBEG,IDCBEG+IDCLEN-1
+ IF(MDME(IDC,1).LT.0) GOTO 260
+ NTMP=NCMP
+ DO 230 ITMP=1,NTMP
+ KFTMP(ITMP)=KFCMP(ITMP)
+ 230 CONTINUE
+ NFIN=0
+ DO 250 IKF=1,5
+ KFNOW=IABS(KFDP(IDC,IKF))
+ IF(KFNOW.EQ.0) GOTO 250
+ NFIN=NFIN+1
+ DO 240 ITMP=1,NTMP
+ IF(KFTMP(ITMP).EQ.KFNOW) THEN
+ KFTMP(ITMP)=KFTMP(NTMP)
+ NTMP=NTMP-1
+ GOTO 250
+ ENDIF
+ 240 CONTINUE
+ 250 CONTINUE
+ IF(NTMP.EQ.0.AND.MODE.LE.6) MDME(IDC,1)=MODE-5
+ IF(NTMP.EQ.0.AND.NFIN.EQ.NCMP.AND.MODE.GE.7)
+ & MDME(IDC,1)=MODE-7
+ 260 CONTINUE
+ RETURN
+
+C...Error exit for impossible read of particle code.
+ 300 CALL PYERRM(18,'(PYONOF:) could not interpret particle code '
+ &//CHCODE)
+
+C...Formats for output.
+ 1000 FORMAT(' Decays for',I8,' set ',A10)
+ 1100 FORMAT(' Decays for',I8,' set ',A10,' if match',10I8)
+
+ RETURN
+ END
+C*********************************************************************
+
+C...PYTUNE
+C...Presets for a few specific underlying-event and min-bias tunes
+C...Note some tunes require external pdfs to be linked (e.g. 105:QW),
+C...others require particular versions of pythia (e.g. the SCI and GAL
+C...models). See below for details.
+ SUBROUTINE PYTUNE(ITUNE)
+C
+C ITUNE NAME (detailed descriptions below)
+C 0 Default : No settings changed => linked Pythia version's defaults.
+C ====== Old UE, Q2-ordered showers ==========================================
+C 100 A : Rick Field's CDF Tune A
+C 101 AW : Rick Field's CDF Tune AW
+C 102 BW : Rick Field's CDF Tune BW
+C 103 DW : Rick Field's CDF Tune DW
+C 104 DWT : Rick Field's CDF Tune DW with slower UE energy scaling
+C 105 QW : Rick Field's CDF Tune QW (NB: needs CTEQ6.1M pdfs externally)
+C 106 ATLAS-DC2: Arthur Moraes' (old) ATLAS tune (ATLAS DC2 / Rome)
+C 107 ACR : Tune A modified with annealing CR
+C 108 D6 : Rick Field's CDF Tune D6 (NB: needs CTEQ6L pdfs externally)
+C 109 D6T : Rick Field's CDF Tune D6T (NB: needs CTEQ6L pdfs externally)
+C ====== Intermediate Models =================================================
+C 200 IM 1 : Intermediate model: new UE, Q2-ordered showers, annealing CR
+C 201 APT : Tune A modified to use pT-ordered final-state showers
+C ====== New UE, interleaved pT-ordered showers, annealing CR ================
+C 300 S0 : Sandhoff-Skands Tune 0
+C 301 S1 : Sandhoff-Skands Tune 1
+C 302 S2 : Sandhoff-Skands Tune 2
+C 303 S0A : S0 with "Tune A" UE energy scaling
+C 304 NOCR : New UE "best try" without colour reconnections
+C 305 Old : New UE, original (primitive) colour reconnections
+C 306 ATLAS-CSC: Arthur Moraes' (new) ATLAS tune (needs CTEQ6L externally)
+C ======= The Uppsala models =================================================
+C ( NB! must be run with special modified Pythia 6.215 version )
+C ( available from http://www.isv.uu.se/thep/MC/scigal/ )
+C 400 GAL 0 : Generalized area-law model. Old parameters
+C 401 SCI 0 : Soft-Colour-Interaction model. Old parameters
+C 402 GAL 1 : Generalized area-law model. Tevatron MB retuned (Skands)
+C 403 SCI 1 : Soft-Colour-Interaction model. Tevatron MB retuned (Skands)
+C
+C More details;
+C
+C Quick Dictionary:
+C BE : Bose-Einstein
+C BR : Beam Remnants
+C CR : Colour Reconnections
+C HAD: Hadronization
+C ISR/FSR: Initial-State Radiation / Final-State Radiation
+C FSI: Final-State Interactions (=CR+BE)
+C MB : Minimum-bias
+C MI : Multiple Interactions
+C UE : Underlying Event
+C
+C A (100) and AW (101). Old UE model, Q2-ordered showers.
+C...*** NB : SHOULD BE RUN WITH PYTHIA 6.2 (e.g. 6.228) ***
+C...*** CAN ALSO BE RUN WITH PYTHIA 6.406+
+C...Key feature: extensively compared to CDF data (R.D. Field).
+C...* Large starting scale for ISR (PARP(67)=4)
+C...* AW has even more radiation due to smaller mu_R choice in alpha_s.
+C...* See: http://www.phys.ufl.edu/~rfield/cdf/
+C
+C BW (102). Old UE model, Q2-ordered showers.
+C...*** NB : SHOULD BE RUN WITH PYTHIA 6.2 (e.g. 6.228) ***
+C...*** CAN ALSO BE RUN WITH PYTHIA 6.406+
+C...Key feature: extensively compared to CDF data (R.D. Field).
+C...NB: Can also be run with Pythia 6.2 or 6.312+
+C...* Small starting scale for ISR (PARP(67)=1)
+C...* BW has more radiation due to smaller mu_R choice in alpha_s.
+C...* See: http://www.phys.ufl.edu/~rfield/cdf/
+C
+C DW (103) and DWT (104). Old UE model, Q2-ordered showers.
+C...*** NB : SHOULD BE RUN WITH PYTHIA 6.2 (e.g. 6.228) ***
+C...*** CAN ALSO BE RUN WITH PYTHIA 6.406+
+C...Key feature: extensively compared to CDF data (R.D. Field).
+C...NB: Can also be run with Pythia 6.2 or 6.312+
+C...* Intermediate starting scale for ISR (PARP(67)=2.5)
+C...* DWT has a different reference energy, the same as the "S" models
+C... below, leading to more UE activity at the LHC, but less at RHIC.
+C...* See: http://www.phys.ufl.edu/~rfield/cdf/
+C
+C QW (105). Old UE model, Q2-ordered showers.
+C...*** NB : SHOULD BE RUN WITH PYTHIA 6.2 (e.g. 6.228) ***
+C...*** CAN ALSO BE RUN WITH PYTHIA 6.406+
+C...Key feature: uses CTEQ61 (external pdf library must be linked)
+C
+C ATLAS-DC2 (106). Old UE model, Q2-ordered showers.
+C...*** NB : SHOULD BE RUN WITH PYTHIA 6.2 (e.g. 6.228) ***
+C...*** CAN ALSO BE RUN WITH PYTHIA 6.406+
+C...Key feature: tune used by the ATLAS collaboration.
+C
+C ACR (107). Old UE model, Q2-ordered showers, annealing CR.
+C...*** NB : SHOULD BE RUN WITH PYTHIA 6.412+ ***
+C...Key feature: Tune A modified to use annealing CR.
+C...NB: PARP(85)=0D0 and amount of CR is regulated by PARP(78).
+C
+C D6 (108) and D6T (109). Old UE model, Q2-ordered showers, CTEQ6L PDF.
+C...Key feature: Like DW and DWT but retuned to use CTEQ6L PDFs.
+C
+C...IM1 (200). Intermediate model, Q2-ordered showers.
+C...Key feature: new UE model with Q2-ordered showers and no interleaving.
+C...* "Rap" tune of hep-ph/0402078, modified with new annealing CR.
+C...* See: Sjostrand & Skands: JHEP 03(2004)053, hep-ph/0402078.
+C
+C...APT (201). Old UE model, pT-ordered final-state showers
+C...Key feature: Rick Field's Tune A, but with new final-state showers
+C
+C S0 (300) and S0A (303). New UE model, pT-ordered showers.
+C...Key feature: large amount of multiple interactions
+C...* Somewhat faster than the other colour annealing scenarios.
+C...* S0A has a faster energy scaling of the UE IR cutoff, borrowed
+C... from Tune A, leading to less UE at the LHC, but more at RHIC.
+C...* Small amount of radiation.
+C...* Large amount of low-pT MI
+C...* Low degree of proton lumpiness (broad matter dist.)
+C...* CR Type S (driven by free triplets), of medium strength.
+C...* See: Pythia6402 update notes or later.
+C
+C S1 (301). New UE model, pT-ordered showers.
+C...Key feature: large amount of radiation.
+C...* Large amount of low-pT perturbative ISR
+C...* Large amount of FSR off ISR partons
+C...* Small amount of low-pT multiple interactions
+C...* Moderate degree of proton lumpiness
+C...* Least aggressive CR type (S+S Type I), but with large strength
+C...* See: Sandhoff & Skands: FERMILAB-CONF-05-518-T, in hep-ph/0604120.
+C
+C S2 (302). New UE model, pT-ordered showers.
+C...Key feature: very lumpy proton + gg string cluster formation allowed
+C...* Small amount of radiation
+C...* Moderate amount of low-pT MI
+C...* High degree of proton lumpiness (more spiky matter distribution)
+C...* Most aggressive CR type (S+S Type II), but with small strength
+C...* See: Sandhoff & Skands: FERMILAB-CONF-05-518-T, in hep-ph/0604120.
+C
+C NOCR (304). New UE model, pT-ordered showers.
+C...Key feature: no colour reconnections (NB: "Best fit" only).
+C...* NB: <pT>(Nch) problematic in this tune.
+C...* Small amount of radiation
+C...* Small amount of low-pT MI
+C...* Low degree of proton lumpiness
+C...* Large BR composite x enhancement factor
+C...* Most clever colour flow without CR ("Lambda ordering")
+C
+C ATLAS-CSC (306). New UE mode, pT-ordered showers, CTEQ6L.
+C...Key feature: 11-parameter ATLAS tune of the new framework.
+C...* Old (pre-annealing) colour reconnections a la 305.
+C...* Uses CTEQ6 Leading Order PDFs (must be interfaced externally)
+C
+C...The GAL and SCI models (400+) are special and *SHOULD NOT* be run
+C...with an unmodified Pythia distribution.
+C...See http://www.isv.uu.se/thep/MC/scigal/ for more information.
+C
+C ::: + Future improvements?
+C Include also QCD K-factor a la M. Heinz / ATLAS TDR ? RDF's QK?
+C (problem: K-factor affects everything so only works as
+C intended for min-bias, not for UE ... probably need a
+C better long-term solution to handle UE as well. Anyway,
+C Mark uses MSTP(33) and PARP(31)-PARP(33).)
+
+C...Global statements
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ INTEGER PYK,PYCHGE,PYCOMP
+
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+
+C...SCI and GAL Commonblocks
+ COMMON /SCIPAR/MSWI(2),PARSCI(2)
+
+C...Internal parameters
+ PARAMETER(MXTUNS=500)
+ CHARACTER*8 CHVERS, CHDOC
+ PARAMETER (CHVERS='1.012 ',CHDOC='Sep 2007')
+ CHARACTER*16 CHNAMS(0:MXTUNS), CHNAME
+ CHARACTER*42 CHMSTJ(50), CHMSTP(51:100), CHPARP(61:100),
+ & CHPARJ(41:100), CH40
+ CHARACTER*60 CH60
+ CHARACTER*70 CH70
+ DATA (CHNAMS(I),I=0,1)/'Default',' '/
+ DATA (CHNAMS(I),I=100,110)/
+ & 'Tune A','Tune AW','Tune BW','Tune DW','Tune DWT','Tune QW',
+ & 'ATLAS Tune','Tune ACR','Tune D6','Tune D6T',' '/
+ DATA (CHNAMS(I),I=300,310)/
+ & 'Tune S0','Tune S1','Tune S2','Tune S0A','NOCR','Old',
+ 5 'ATLAS-CSC Tune','Yale Tune','Yale-K Tune',2*' '/
+ DATA (CHNAMS(I),I=200,210)/
+ & 'IM Tune 1','Tune APT',9*' '/
+ DATA (CHNAMS(I),I=400,410)/
+ & 'GAL Tune 0','SCI Tune 0','GAL Tune 1','SCI Tune 1',7*' '/
+ DATA (CHMSTJ(I),I=11,20)/
+ & 'HAD choice of fragmentation function(s)',4*' ',
+ & 'HAD treatment of small-mass systems',4*' '/
+ DATA (CHMSTJ(I),I=41,50)/
+ & 'FSR type (Q2 or pT) for old framework',9*' '/
+ DATA (CHMSTP(I),I=51,100)/
+ 5 'PDF set','PDF set internal (=1) or pdflib (=2)',8*' ',
+ 6 'ISR master switch',6*' ',
+ 6 'ISR phase space choice & ME corrections',' ',
+ 7 'ISR IR regularization scheme',' ',
+ 7 'ISR scheme for FSR off ISR',8*' ',
+ 8 'UE model',
+ 8 'UE hadron transverse mass distribution',5*' ',
+ 8 'BR composite scheme','BR colour scheme',
+ 9 'BR primordial kT compensation',
+ 9 'BR primordial kT distribution',
+ 9 'BR energy partitioning scheme',2*' ',
+ 9 'FSI colour (re-)connection model',5*' '/
+ DATA (CHPARP(I),I=61,100)/
+ 6 ' ','ISR IR cutoff',' ','ISR renormalization scale prefactor',
+ 6 2*' ','ISR Q2max factor',3*' ',
+ 7 'FSR Q2max factor for non-s-channel procs',5*' ',
+ 7 'FSI colour reconnection turnoff scale',
+ 7 'FSI colour reconnection strength',
+ 7 'BR composite x enhancement','BR breakup suppression',
+ 8 2*'UE IR cutoff at reference ecm',
+ 8 2*'UE mass distribution parameter',
+ 8 'UE gg colour correlated fraction','UE total gg fraction',
+ 8 2*' ',
+ 8 'UE IR cutoff reference ecm','UE IR cutoff ecm scaling power',
+ 9 'BR primordial kT width <|kT|>',' ',
+ 9 'BR primordial kT UV cutoff',7*' '/
+ DATA (CHPARJ(I),I=41,90)/
+ 4 ' ','HAD string parameter b',8*' ',
+ 5 3*' ','HAD charm parameter','HAD bottom parameter',5*' ',
+ 6 10*' ',10*' ',
+ 8 'FSR Lambda_QCD scale','FSR IR cutoff',8*' '/
+ SAVE /PYDAT1/,/PYPARS/
+ SAVE /SCIPAR/
+
+C...1) Shorthand notation
+ M13=MSTU(13)
+ M11=MSTU(11)
+ IF (ITUNE.LE.MXTUNS.AND.ITUNE.GE.0) THEN
+ CHNAME=CHNAMS(ITUNE)
+ IF (ITUNE.EQ.0) GOTO 9999
+ ELSE
+ CALL PYERRM(9,'(PYTUNE:) Tune number > max. Using defaults.')
+ GOTO 9999
+ ENDIF
+
+C...2) Hello World
+ IF (M13.GE.1) WRITE(M11,5000) CHVERS, CHDOC
+
+C...3) Tune parameters
+
+C=============================================================================
+C...Tunes S0, S1, S2, S0A, NOCR, and RAP (by P. Skands)
+ IF (ITUNE.GE.300.AND.ITUNE.LE.305) THEN
+ IF (M13.GE.1) WRITE(M11,5010) ITUNE, CHNAME
+ IF (MSTP(181).LE.5.OR.(MSTP(181).EQ.6.AND.MSTP(182).LE.405))THEN
+ CALL PYERRM(9,'(PYTUNE:) linked PYTHIA version incompatible'//
+ & ' with tune.')
+ ENDIF
+
+C...PDFs
+ MSTP(52)=1
+ MSTP(51)=7
+C...ISR
+ PARP(64)=1D0
+C...UE on, new model.
+ MSTP(81)=21
+C...Slow IR cutoff energy scaling by default
+ PARP(89)=1800D0
+ PARP(90)=0.16D0
+C...Switch off trial joinings
+ MSTP(96)=0
+C...Primordial kT cutoff
+ PARP(93)=5D0
+
+C...S0 (300), S0A (303)
+ IF (ITUNE.EQ.300.OR.ITUNE.EQ.303) THEN
+ IF (M13.GE.1) THEN
+ CH60='see P. Skands & D. Wicke, hep-ph/0703081'
+ WRITE(M11,5030) CH60
+ CH60='M. Sandhoff & P. Skands, in hep-ph/0604120'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & P. Skands, EPJC39(2005)129'
+ WRITE(M11,5030) CH60
+ ENDIF
+C...Smooth ISR, low FSR
+ MSTP(70)=2
+ MSTP(72)=0
+C...pT0
+ PARP(82)=1.85D0
+C...Transverse density profile.
+ MSTP(82)=5
+ PARP(83)=1.6D0
+C...Colour Reconnections
+ MSTP(95)=6
+ PARP(78)=0.20D0
+ PARP(77)=0.0D0
+C... Reference energy for pT0 and energy scaling pace.
+ IF (ITUNE.EQ.303) PARP(90)=0.25D0
+C...Lambda_FSR scale.
+ PARJ(81)=0.23D0
+C...FSR activity.
+ PARP(71)=4D0
+C...Rap order, Valence qq, qq x enhc, BR-g-BR supp
+ MSTP(89)=1
+ MSTP(88)=0
+ PARP(79)=2D0
+ PARP(80)=0.01D0
+
+C...S1 (301)
+ ELSEIF(ITUNE.EQ.301) THEN
+ IF (M13.GE.1) THEN
+ CH60='see M. Sandhoff & P. Skands, in hep-ph/0604120'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & P. Skands, EPJC39(2005)129'
+ WRITE(M11,5030) CH60
+ ENDIF
+C...Sharp ISR, high FSR
+ MSTP(70)=0
+ MSTP(72)=1
+C...pT0
+ PARP(82)=2.1D0
+C...Colour Reconnections
+ MSTP(95)=2
+ PARP(78)=0.35D0
+C...Transverse density profile.
+ MSTP(82)=5
+ PARP(83)=1.4D0
+C...Lambda_FSR scale.
+ PARJ(81)=0.23D0
+C...FSR activity.
+ PARP(71)=4D0
+C...Rap order, Valence qq, qq x enhc, BR-g-BR supp
+ MSTP(89)=1
+ MSTP(88)=0
+ PARP(79)=2D0
+ PARP(80)=0.01D0
+
+C...S2 (302)
+ ELSEIF(ITUNE.EQ.302) THEN
+ IF (M13.GE.1) THEN
+ CH60='see M. Sandhoff & P. Skands, in hep-ph/0604120'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & P. Skands, EPJC39(2005)129'
+ WRITE(M11,5030) CH60
+ ENDIF
+C...Smooth ISR, low FSR
+ MSTP(70)=2
+ MSTP(72)=0
+C...pT0
+ PARP(82)=1.9D0
+C...Transverse density profile.
+ MSTP(82)=5
+ PARP(83)=1.2D0
+C...Colour Reconnections
+ MSTP(95)=4
+ PARP(78)=0.15D0
+C...Lambda_FSR scale.
+ PARJ(81)=0.23D0
+C...FSR activity.
+ PARP(71)=4D0
+C...Rap order, Valence qq, qq x enhc, BR-g-BR supp
+ MSTP(89)=1
+ MSTP(88)=0
+ PARP(79)=2D0
+ PARP(80)=0.01D0
+
+C...NOCR (304)
+ ELSEIF(ITUNE.EQ.304) THEN
+ IF (M13.GE.1) THEN
+ CH60='"best try" without colour reconnections'
+ WRITE(M11,5030) CH60
+ CH60='see P. Skands & D. Wicke, hep-ph/0703081'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & P. Skands, EPJC39(2005)129'
+ WRITE(M11,5030) CH60
+ ENDIF
+C...Smooth ISR, low FSR
+ MSTP(70)=2
+ MSTP(72)=0
+C...pT0
+ PARP(82)=2.05D0
+C...Transverse density profile.
+ MSTP(82)=5
+ PARP(83)=1.8D0
+C...Colour Reconnections
+ MSTP(95)=0
+C...Lambda_FSR scale.
+ PARJ(81)=0.23D0
+C...FSR activity.
+ PARP(71)=4D0
+C...Lambda order, Valence qq, large qq x enhc, BR-g-BR supp
+ MSTP(89)=2
+ MSTP(88)=0
+ PARP(79)=3D0
+ PARP(80)=0.01D0
+
+C..."Lo FSR" retune (305)
+ ELSEIF(ITUNE.EQ.305) THEN
+ IF (M13.GE.1) THEN
+ CH60='"Lo FSR retune" with primitive colour reconnections'
+ WRITE(M11,5030) CH60
+ CH60='see T. Sjostrand & P. Skands, EPJC39(2005)129'
+ WRITE(M11,5030) CH60
+ ENDIF
+C...Smooth ISR, low FSR
+ MSTP(70)=2
+ MSTP(72)=0
+C...pT0
+ PARP(82)=1.9D0
+C...Transverse density profile.
+ MSTP(82)=5
+ PARP(83)=2.0D0
+C...Colour Reconnections
+ MSTP(95)=1
+ PARP(78)=1.0D0
+C...Lambda_FSR scale.
+ PARJ(81)=0.23D0
+C...FSR activity.
+ PARP(71)=4D0
+C...Rap order, Valence qq, qq x enhc, BR-g-BR supp
+ MSTP(89)=1
+ MSTP(88)=0
+ PARP(79)=2D0
+ PARP(80)=0.01D0
+ ENDIF
+C...Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ WRITE(M11,5040) 51, MSTP(51), CHMSTP(51)
+ WRITE(M11,5040) 52, MSTP(52), CHMSTP(52)
+ WRITE(M11,5050) 64, PARP(64), CHPARP(64)
+ WRITE(M11,5040) 68, MSTP(68), CHMSTP(68)
+ CH60='(Note: MSTP(68) is not explicitly (re-)set by PYTUNE)'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5040) 70, MSTP(70), CHMSTP(70)
+ WRITE(M11,5040) 72, MSTP(72), CHMSTP(72)
+ WRITE(M11,5050) 71, PARP(71), CHPARP(71)
+ WRITE(M11,5060) 81, PARJ(81), CHPARJ(81)
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5050) 89, PARP(89), CHPARP(89)
+ WRITE(M11,5050) 90, PARP(90), CHPARP(90)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5040) 88, MSTP(88), CHMSTP(88)
+ WRITE(M11,5040) 89, MSTP(89), CHMSTP(89)
+ WRITE(M11,5050) 79, PARP(79), CHPARP(79)
+ WRITE(M11,5050) 80, PARP(80), CHPARP(80)
+ WRITE(M11,5050) 93, PARP(93), CHPARP(93)
+ WRITE(M11,5040) 95, MSTP(95), CHMSTP(95)
+ WRITE(M11,5050) 78, PARP(78), CHPARP(78)
+ ENDIF
+
+C=============================================================================
+C...ATLAS-CSC 11-parameter tune (By A. Moraes)
+ ELSEIF (ITUNE.EQ.306) THEN
+ IF (M13.GE.1) WRITE(M11,5010) ITUNE, CHNAME
+ IF (MSTP(181).LE.5.OR.(MSTP(181).EQ.6.AND.MSTP(182).LE.405))THEN
+ CALL PYERRM(9,'(PYTUNE:) linked PYTHIA version incompatible'//
+ & ' with tune.')
+ ENDIF
+
+C...PDFs
+ MSTP(52)=2
+ MSTP(54)=2
+ MSTP(56)=2
+ MSTP(51)=10042
+ MSTP(53)=10042
+ MSTP(55)=10042
+C...ISR
+C PARP(64)=1D0
+C...UE on, new model.
+ MSTP(81)=21
+C...Energy scaling
+ PARP(89)=1800D0
+ PARP(90)=0.22D0
+C...Switch off trial joinings
+ MSTP(96)=0
+C...Primordial kT cutoff
+
+ IF (M13.GE.1) THEN
+ CH60='see presentations by A. Moraes (ATLAS),'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & P. Skands, EPJC39(2005)129'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5030) ' '
+ CH70='NB! This tune requires CTEQ6.1 pdfs to be '//
+ & 'externally linked and'
+ WRITE(M11,5035) CH70
+ CH70='MSTP(51) should be set manually according to '//
+ & 'the library used'
+ WRITE(M11,5035) CH70
+ ENDIF
+C...Smooth ISR, low FSR
+ MSTP(70)=2
+ MSTP(72)=0
+C...pT0
+ PARP(82)=1.9D0
+C...Transverse density profile.
+ MSTP(82)=4
+ PARP(83)=0.3D0
+ PARP(84)=0.5D0
+C...ISR & FSR in interactions after the first (default)
+ MSTP(84)=1
+ MSTP(85)=1
+C...No double-counting (default)
+ MSTP(86)=2
+C...Companion quark parent gluon (1-x) power
+ MSTP(87)=4
+C...Primordial kT compensation along chaings (default = 0 : uniform)
+ MSTP(90)=1
+C...Colour Reconnections
+ MSTP(95)=1
+ PARP(78)=0.2D0
+C...Lambda_FSR scale.
+ PARJ(81)=0.23D0
+C...Rap order, Valence qq, qq x enhc, BR-g-BR supp
+ MSTP(89)=1
+ MSTP(88)=0
+C PARP(79)=2D0
+ PARP(80)=0.01D0
+C...Peterson charm frag, and c and b hadr parameters
+ MSTJ(11)=3
+ PARJ(54)=-0.07
+ PARJ(55)=-0.006
+C... Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ WRITE(M11,5040) 51, MSTP(51), CHMSTP(51)
+ WRITE(M11,5040) 52, MSTP(52), CHMSTP(52)
+ WRITE(M11,5050) 64, PARP(64), CHPARP(64)
+ WRITE(M11,5040) 68, MSTP(68), CHMSTP(68)
+ CH60='(Note: MSTP(68) is not explicitly (re-)set by PYTUNE)'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5040) 70, MSTP(70), CHMSTP(70)
+ WRITE(M11,5040) 72, MSTP(72), CHMSTP(72)
+ WRITE(M11,5050) 71, PARP(71), CHPARP(71)
+ WRITE(M11,5060) 81, PARJ(81), CHPARJ(81)
+ CH60='(Note: PARJ(81) changed from 0.14! See update notes)'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5050) 89, PARP(89), CHPARP(89)
+ WRITE(M11,5050) 90, PARP(90), CHPARP(90)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5050) 84, PARP(84), CHPARP(84)
+ WRITE(M11,5040) 88, MSTP(88), CHMSTP(88)
+ WRITE(M11,5040) 89, MSTP(89), CHMSTP(89)
+ WRITE(M11,5040) 90, MSTP(90), CHMSTP(90)
+ WRITE(M11,5050) 79, PARP(79), CHPARP(79)
+ WRITE(M11,5050) 80, PARP(80), CHPARP(80)
+ WRITE(M11,5050) 93, PARP(93), CHPARP(93)
+ WRITE(M11,5040) 95, MSTP(95), CHMSTP(95)
+ WRITE(M11,5050) 78, PARP(78), CHPARP(78)
+ WRITE(M11,5070) 11, MSTJ(11), CHMSTJ(11)
+ WRITE(M11,5060) 54, PARJ(54), CHPARJ(54)
+ WRITE(M11,5060) 55, PARJ(55), CHPARJ(55)
+ ENDIF
+
+C=============================================================================
+C...Tunes A, AW, BW, DW, DWT, QW, D6, D6T (by R.D. Field, CDF)
+C...(100-105,108-109) and ATLAS-DC2 Tune (by A. Moraes, ATLAS) (106)
+ ELSEIF ((ITUNE.GE.100.AND.ITUNE.LE.106).OR.ITUNE.EQ.108.OR.
+ & ITUNE.EQ.109) THEN
+ IF (M13.GE.1.AND.ITUNE.NE.106) THEN
+ WRITE(M11,5010) ITUNE, CHNAME
+ CH60='see R.D. Field (CDF), in hep-ph/0610012'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & M. v. Zijl, PRD36(1987)2019'
+ WRITE(M11,5030) CH60
+ ENDIF
+C...Multiple interactions on, old framework
+ MSTP(81)=1
+C...Fast IR cutoff energy scaling by default
+ PARP(89)=1800D0
+ PARP(90)=0.25D0
+C...Default CTEQ5L (internal), except for QW: CTEQ61 (external)
+ MSTP(51)=7
+ MSTP(52)=1
+ IF (ITUNE.EQ.105) THEN
+ MSTP(51)=10150
+ MSTP(52)=2
+ ELSEIF(ITUNE.EQ.108.OR.ITUNE.EQ.109) THEN
+ MSTP(52)=2
+ MSTP(54)=2
+ MSTP(56)=2
+ MSTP(51)=10042
+ MSTP(53)=10042
+ MSTP(55)=10042
+ ENDIF
+C...Double Gaussian matter distribution.
+ MSTP(82)=4
+ PARP(83)=0.5D0
+ PARP(84)=0.4D0
+C...FSR activity.
+ PARP(71)=4D0
+C...Lambda_FSR scale.
+ PARJ(81)=0.29D0
+C...Fragmentation functions and c and b parameters
+ MSTJ(11)=4
+ PARJ(54)=-0.05
+ PARJ(55)=-0.005
+
+C...Tune A and AW
+ IF(ITUNE.EQ.100.OR.ITUNE.EQ.101) THEN
+C...pT0.
+ PARP(82)=2.0D0
+c...String drawing almost completely minimizes string length.
+ PARP(85)=0.9D0
+ PARP(86)=0.95D0
+C...ISR cutoff, muR scale factor, and phase space size
+ PARP(62)=1D0
+ PARP(64)=1D0
+ PARP(67)=4D0
+C...Intrinsic kT, size, and max
+ MSTP(91)=1
+ PARP(91)=1D0
+ PARP(93)=5D0
+C...AW : higher ISR IR cutoff, but also larger alpha_s and more intrinsic kT.
+ IF (ITUNE.EQ.101) THEN
+ PARP(62)=1.25D0
+ PARP(64)=0.2D0
+ PARP(91)=2.1D0
+ PARP(92)=15.0D0
+ ENDIF
+
+C...Tune BW (larger alpha_s, more intrinsic kT. Smaller ISR phase space.)
+ ELSEIF (ITUNE.EQ.102) THEN
+C...pT0.
+ PARP(82)=1.9D0
+c...String drawing completely minimizes string length.
+ PARP(85)=1.0D0
+ PARP(86)=1.0D0
+C...ISR cutoff, muR scale factor, and phase space size
+ PARP(62)=1.25D0
+ PARP(64)=0.2D0
+ PARP(67)=1D0
+C...Intrinsic kT, size, and max
+ MSTP(91)=1
+ PARP(91)=2.1D0
+ PARP(93)=15D0
+
+C...Tune DW
+ ELSEIF (ITUNE.EQ.103) THEN
+C...pT0.
+ PARP(82)=1.9D0
+c...String drawing completely minimizes string length.
+ PARP(85)=1.0D0
+ PARP(86)=1.0D0
+C...ISR cutoff, muR scale factor, and phase space size
+ PARP(62)=1.25D0
+ PARP(64)=0.2D0
+ PARP(67)=2.5D0
+C...Intrinsic kT, size, and max
+ MSTP(91)=1
+ PARP(91)=2.1D0
+ PARP(93)=15D0
+
+C...Tune DWT
+ ELSEIF (ITUNE.EQ.104) THEN
+C...pT0.
+ PARP(82)=1.9409D0
+C...Run II ref scale and slow scaling
+ PARP(89)=1960D0
+ PARP(90)=0.16D0
+c...String drawing completely minimizes string length.
+ PARP(85)=1.0D0
+ PARP(86)=1.0D0
+C...ISR cutoff, muR scale factor, and phase space size
+ PARP(62)=1.25D0
+ PARP(64)=0.2D0
+ PARP(67)=2.5D0
+C...Intrinsic kT, size, and max
+ MSTP(91)=1
+ PARP(91)=2.1D0
+ PARP(93)=15D0
+
+C...Tune QW
+ ELSEIF(ITUNE.EQ.105) THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ CH70='NB! This tune requires CTEQ6.1 pdfs to be '//
+ & 'externally linked and'
+ WRITE(M11,5035) CH70
+ CH70='MSTP(51) should be set manually according to '//
+ & 'the library used'
+ WRITE(M11,5035) CH70
+ ENDIF
+C...pT0.
+ PARP(82)=1.1D0
+c...String drawing completely minimizes string length.
+ PARP(85)=1.0D0
+ PARP(86)=1.0D0
+C...ISR cutoff, muR scale factor, and phase space size
+ PARP(62)=1.25D0
+ PARP(64)=0.2D0
+ PARP(67)=2.5D0
+C...Intrinsic kT, size, and max
+ MSTP(91)=1
+ PARP(91)=2.1D0
+ PARP(93)=15D0
+
+C...Tune D6 and D6T
+ ELSEIF(ITUNE.EQ.108.OR.ITUNE.EQ.109) THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ CH70='NB! This tune requires CTEQ6L pdfs to be '//
+ & 'externally linked and'
+ WRITE(M11,5035) CH70
+ CH70='MSTP(51) should be set manually according to '//
+ & 'the library used'
+ WRITE(M11,5035) CH70
+ ENDIF
+C...The "Rick" proton, double gauss with 0.5/0.4
+ MSTP(82)=4
+ PARP(83)=0.5D0
+ PARP(84)=0.4D0
+c...String drawing completely minimizes string length.
+ PARP(85)=1.0D0
+ PARP(86)=1.0D0
+ IF (ITUNE.EQ.108) THEN
+C...D6: pT0, Run I ref scale, and fast energy scaling
+ PARP(82)=1.8D0
+ PARP(89)=1800D0
+ PARP(90)=0.25D0
+ ELSE
+C...D6T: pT0, Run II ref scale, and slow energy scaling
+ PARP(82)=1.8387D0
+ PARP(89)=1960D0
+ PARP(90)=0.16D0
+ ENDIF
+C...ISR cutoff, muR scale factor, and phase space size
+ PARP(62)=1.25D0
+ PARP(64)=0.2D0
+ PARP(67)=2.5D0
+C...Intrinsic kT, size, and max
+ MSTP(91)=1
+ PARP(91)=2.1D0
+ PARP(93)=15D0
+
+C...Old ATLAS-DC2 5-parameter tune
+ ELSEIF(ITUNE.EQ.106) THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5010) ITUNE, CHNAME
+ CH60='see A. Moraes et al., SN-ATLAS-2006-057'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & M. v. Zijl, PRD36(1987)2019'
+ WRITE(M11,5030) CH60
+ ENDIF
+C... pT0.
+ PARP(82)=1.8D0
+C... Different ref and rescaling pacee
+ PARP(89)=1000D0
+ PARP(90)=0.16D0
+C... Parameters of mass distribution
+ PARP(83)=0.5D0
+ PARP(84)=0.5D0
+C... Old default string drawing
+ PARP(85)=0.33D0
+ PARP(86)=0.66D0
+C... ISR, phase space equivalent to Tune B
+ PARP(62)=1D0
+ PARP(64)=1D0
+ PARP(67)=1D0
+C... FSR
+ PARP(71)=4D0
+ PARJ(81)=0.29D0
+C... Intrinsic kT
+ MSTP(91)=1
+ PARP(91)=1D0
+ PARP(93)=5D0
+ ENDIF
+
+C... Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ WRITE(M11,5040) 51, MSTP(51), CHMSTP(51)
+ WRITE(M11,5040) 52, MSTP(52), CHMSTP(52)
+ WRITE(M11,5050) 62, PARP(62), CHPARP(62)
+ WRITE(M11,5050) 64, PARP(64), CHPARP(64)
+ WRITE(M11,5050) 67, PARP(67), CHPARP(67)
+ WRITE(M11,5040) 68, MSTP(68), CHMSTP(68)
+ CH60='(Note: MSTP(68) is not explicitly (re-)set by PYTUNE)'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5050) 71, PARP(71), CHPARP(71)
+ WRITE(M11,5060) 81, PARJ(81), CHPARJ(81)
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5050) 89, PARP(89), CHPARP(89)
+ WRITE(M11,5050) 90, PARP(90), CHPARP(90)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5050) 84, PARP(84), CHPARP(84)
+ WRITE(M11,5050) 85, PARP(85), CHPARP(85)
+ WRITE(M11,5050) 86, PARP(86), CHPARP(86)
+ WRITE(M11,5040) 91, MSTP(91), CHMSTP(91)
+ WRITE(M11,5050) 91, PARP(91), CHPARP(91)
+ WRITE(M11,5050) 93, PARP(93), CHPARP(93)
+ WRITE(M11,5070) 11, MSTJ(11), CHMSTJ(11)
+ WRITE(M11,5060) 54, PARJ(54), CHPARJ(54)
+ WRITE(M11,5060) 55, PARJ(55), CHPARJ(55)
+ ENDIF
+
+C=============================================================================
+C... ACR, tune A with new CR (107)
+ ELSEIF(ITUNE.EQ.107) THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5010) ITUNE, CHNAME
+ CH60='Tune A modified with new colour reconnections'
+ WRITE(M11,5030) CH60
+ CH60='PARP(85)=0D0 and amount of CR is regulated by PARP(78)'
+ WRITE(M11,5030) CH60
+ CH60='see P. Skands & D. Wicke, hep-ph/0703081,'
+ WRITE(M11,5030) CH60
+ CH60='R.D. Field (CDF), in hep-ph/0610012 (Tune A)'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & M. v. Zijl, PRD36(1987)2019'
+ WRITE(M11,5030) CH60
+ ENDIF
+ IF (MSTP(181).LE.5.OR.(MSTP(181).EQ.6.AND.MSTP(182).LE.406))THEN
+ CALL PYERRM(9,'(PYTUNE:) linked PYTHIA version incompatible'//
+ & ' with tune. Using defaults.')
+ GOTO 9998
+ ENDIF
+ MSTP(81)=1
+ PARP(89)=1800D0
+ PARP(90)=0.25D0
+ MSTP(82)=4
+ PARP(83)=0.5D0
+ PARP(84)=0.4D0
+ MSTP(51)=7
+ MSTP(52)=1
+ PARP(71)=4D0
+ PARJ(81)=0.29D0
+ PARP(82)=2.0D0
+ PARP(85)=0.0D0
+ PARP(86)=0.66D0
+ PARP(62)=1D0
+ PARP(64)=1D0
+ PARP(67)=4D0
+ MSTP(91)=1
+ PARP(91)=1D0
+ PARP(93)=5D0
+ MSTP(95)=6
+ PARP(78)=0.25D0
+C...Fragmentation functions and c and b parameters
+ MSTJ(11)=4
+ PARJ(54)=-0.05
+ PARJ(55)=-0.005
+C...Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ WRITE(M11,5040) 51, MSTP(51), CHMSTP(51)
+ WRITE(M11,5040) 52, MSTP(52), CHMSTP(52)
+ WRITE(M11,5050) 62, PARP(62), CHPARP(62)
+ WRITE(M11,5050) 64, PARP(64), CHPARP(64)
+ WRITE(M11,5050) 67, PARP(67), CHPARP(67)
+ WRITE(M11,5040) 68, MSTP(68), CHMSTP(68)
+ CH60='(Note: MSTP(68) is not explicitly (re-)set by PYTUNE)'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5050) 71, PARP(71), CHPARP(71)
+ WRITE(M11,5060) 81, PARJ(81), CHPARJ(81)
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5050) 89, PARP(89), CHPARP(89)
+ WRITE(M11,5050) 90, PARP(90), CHPARP(90)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5050) 84, PARP(84), CHPARP(84)
+ WRITE(M11,5050) 85, PARP(85), CHPARP(85)
+ WRITE(M11,5050) 86, PARP(86), CHPARP(86)
+ WRITE(M11,5040) 91, MSTP(91), CHMSTP(91)
+ WRITE(M11,5050) 91, PARP(91), CHPARP(91)
+ WRITE(M11,5050) 93, PARP(93), CHPARP(93)
+ WRITE(M11,5040) 95, MSTP(95), CHMSTP(95)
+ WRITE(M11,5050) 78, PARP(78), CHPARP(78)
+ WRITE(M11,5070) 11, MSTJ(11), CHMSTJ(11)
+ WRITE(M11,5060) 54, PARJ(54), CHPARJ(54)
+ WRITE(M11,5060) 55, PARJ(55), CHPARJ(55)
+ ENDIF
+
+C=============================================================================
+C... Intermediate model. Rap tune (retuned to post-6.406 IR factorization)
+ ELSEIF(ITUNE.EQ.200) THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5010) ITUNE, CHNAME
+ CH60='see T. Sjostrand & P. Skands, JHEP03(2004)053'
+ WRITE(M11,5030) CH60
+ ENDIF
+ IF (MSTP(181).LE.5.OR.(MSTP(181).EQ.6.AND.MSTP(182).LE.405))THEN
+ CALL PYERRM(9,'(PYTUNE:) linked PYTHIA version incompatible'//
+ & ' with tune.')
+ ENDIF
+C...PDF
+ MSTP(51)=7
+ MSTP(52)=1
+C...ISR
+ PARP(62)=1D0
+ PARP(64)=1D0
+ PARP(67)=4D0
+C...FSR
+ PARP(71)=4D0
+ PARJ(81)=0.29D0
+C...UE
+ MSTP(81)=11
+ PARP(82)=2.25D0
+ PARP(89)=1800D0
+ PARP(90)=0.25D0
+C... ExpOfPow(1.8) overlap profile
+ MSTP(82)=5
+ PARP(83)=1.8D0
+C... Valence qq
+ MSTP(88)=0
+C... Rap Tune
+ MSTP(89)=1
+C... Default diquark, BR-g-BR supp
+ PARP(79)=2D0
+ PARP(80)=0.01D0
+C... Final state reconnect.
+ MSTP(95)=1
+ PARP(78)=0.55D0
+C...Fragmentation functions and c and b parameters
+ MSTJ(11)=4
+ PARJ(54)=-0.05
+ PARJ(55)=-0.005
+C... Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ WRITE(M11,5040) 51, MSTP(51), CHMSTP(51)
+ WRITE(M11,5040) 52, MSTP(52), CHMSTP(52)
+ WRITE(M11,5050) 62, PARP(62), CHPARP(62)
+ WRITE(M11,5050) 64, PARP(64), CHPARP(64)
+ WRITE(M11,5050) 67, PARP(67), CHPARP(67)
+ WRITE(M11,5040) 68, MSTP(68), CHMSTP(68)
+ CH60='(Note: MSTP(68) is not explicitly (re-)set by PYTUNE)'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5050) 71, PARP(71), CHPARP(71)
+ WRITE(M11,5060) 81, PARJ(81), CHPARJ(81)
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5050) 89, PARP(89), CHPARP(89)
+ WRITE(M11,5050) 90, PARP(90), CHPARP(90)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5040) 88, MSTP(88), CHMSTP(88)
+ WRITE(M11,5040) 89, MSTP(89), CHMSTP(89)
+ WRITE(M11,5050) 79, PARP(79), CHPARP(79)
+ WRITE(M11,5050) 80, PARP(80), CHPARP(80)
+ WRITE(M11,5050) 93, PARP(93), CHPARP(93)
+ WRITE(M11,5040) 95, MSTP(95), CHMSTP(95)
+ WRITE(M11,5050) 78, PARP(78), CHPARP(78)
+ WRITE(M11,5070) 11, MSTJ(11), CHMSTJ(11)
+ WRITE(M11,5060) 54, PARJ(54), CHPARJ(54)
+ WRITE(M11,5060) 55, PARJ(55), CHPARJ(55)
+ ENDIF
+
+C...APT. Tune A modified to use new pT-ordered FSR.
+ ELSEIF(ITUNE.EQ.201) THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5010) ITUNE, CHNAME
+ CH60='see P. Skands & D. Wicke, hep-ph/0703081 (Tune APT),'
+ WRITE(M11,5030) CH60
+ CH60='R.D. Field (CDF), in hep-ph/0610012 (Tune A)'
+ WRITE(M11,5030) CH60
+ CH60='T. Sjostrand & M. v. Zijl, PRD36(1987)2019'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & P. Skands, EPJC39(2005)129'
+ WRITE(M11,5030) CH60
+ ENDIF
+ IF (MSTP(181).LE.5.OR.(MSTP(181).EQ.6.AND.MSTP(182).LE.411))THEN
+ CALL PYERRM(9,'(PYTUNE:) linked PYTHIA version incompatible'//
+ & ' with tune.')
+ ENDIF
+C...First set as if Pythia tune A
+C...Multiple interactions on, old framework
+ MSTP(81)=1
+C...Fast IR cutoff energy scaling by default
+ PARP(89)=1800D0
+ PARP(90)=0.25D0
+C...Default CTEQ5L (internal)
+ MSTP(51)=7
+ MSTP(52)=1
+C...Double Gaussian matter distribution.
+ MSTP(82)=4
+ PARP(83)=0.5D0
+ PARP(84)=0.4D0
+C...FSR activity.
+ PARP(71)=4D0
+c...String drawing almost completely minimizes string length.
+ PARP(85)=0.9D0
+ PARP(86)=0.95D0
+C...ISR cutoff, muR scale factor, and phase space size
+ PARP(62)=1D0
+ PARP(64)=1D0
+ PARP(67)=4D0
+C...Intrinsic kT, size, and max
+ MSTP(91)=1
+ PARP(91)=1D0
+ PARP(93)=5D0
+C...Use pT-ordered FSR
+ MSTJ(41)=12
+C...Lambda_FSR scale for pT-ordering
+ PARJ(81)=0.23D0
+C...Retune pT0
+ PARP(82)=2.1D0
+C...Fragmentation functions and c and b parameters
+ MSTJ(11)=4
+ PARJ(54)=-0.05
+ PARJ(55)=-0.005
+
+C... Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5030) ' '
+ WRITE(M11,5040) 51, MSTP(51), CHMSTP(51)
+ WRITE(M11,5040) 52, MSTP(52), CHMSTP(52)
+ WRITE(M11,5050) 62, PARP(62), CHPARP(62)
+ WRITE(M11,5050) 64, PARP(64), CHPARP(64)
+ WRITE(M11,5050) 67, PARP(67), CHPARP(67)
+ WRITE(M11,5040) 68, MSTP(68), CHMSTP(68)
+ CH60='(Note: MSTP(68) is not explicitly (re-)set by PYTUNE)'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5070) 41, MSTJ(41), CHMSTJ(41)
+ WRITE(M11,5050) 71, PARP(71), CHPARP(71)
+ WRITE(M11,5060) 81, PARJ(81), CHPARJ(81)
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5050) 89, PARP(89), CHPARP(89)
+ WRITE(M11,5050) 90, PARP(90), CHPARP(90)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5050) 84, PARP(84), CHPARP(84)
+ WRITE(M11,5050) 85, PARP(85), CHPARP(85)
+ WRITE(M11,5050) 86, PARP(86), CHPARP(86)
+ WRITE(M11,5040) 91, MSTP(91), CHMSTP(91)
+ WRITE(M11,5050) 91, PARP(91), CHPARP(91)
+ WRITE(M11,5050) 93, PARP(93), CHPARP(93)
+ WRITE(M11,5070) 11, MSTJ(11), CHMSTJ(11)
+ WRITE(M11,5060) 54, PARJ(54), CHPARJ(54)
+ WRITE(M11,5060) 55, PARJ(55), CHPARJ(55)
+ ENDIF
+
+C=============================================================================
+C...Uppsala models: Generalized Area Law and Soft Colour Interactions
+ ELSEIF(CHNAME.EQ.'GAL Tune 0'.OR.CHNAME.EQ.'GAL Tune 1') THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5010) ITUNE, CHNAME
+ CH60='see J. Rathsman, PLB452(1999)364'
+ WRITE(M11,5030) CH60
+C ? CH60='A. Edin, G. Ingelman, J. Rathsman, hep-ph/9912539,'
+C ? WRITE(M11,5030)
+ CH60='and T. Sjostrand & M. v. Zijl, PRD36(1987)2019'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5030) ' '
+ CH70='NB! The GAL model must be run with modified '//
+ & 'Pythia v6.215:'
+ WRITE(M11,5035) CH70
+ CH70='available from http://www.isv.uu.se/thep/MC/scigal/'
+ WRITE(M11,5035) CH70
+ WRITE(M11,5030) ' '
+ ENDIF
+C...GAL Recommended settings from Uppsala web page (as per 22/08 2006)
+ MSWI(2) = 3
+ PARSCI(2) = 0.10
+ MSWI(1) = 2
+ PARSCI(1) = 0.44
+ MSTJ(16) = 0
+ PARJ(42) = 0.45
+ PARJ(82) = 2.0
+ PARP(62) = 2.0
+ MSTP(81) = 1
+ MSTP(82) = 1
+ PARP(81) = 1.9
+ MSTP(92) = 1
+ IF(CHNAME.EQ.'GAL Tune 1') THEN
+C...GAL retune (P. Skands) to get better min-bias <Nch> at Tevatron
+ MSTP(82)=4
+ PARP(83)=0.25D0
+ PARP(84)=0.5D0
+ PARP(82) = 1.75
+ IF (M13.GE.1) THEN
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5050) 84, PARP(84), CHPARP(84)
+ ENDIF
+ ELSE
+ IF (M13.GE.1) THEN
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 81, PARP(81), CHPARP(81)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ ENDIF
+ ENDIF
+C...Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5050) 62, PARP(62), CHPARP(62)
+ WRITE(M11,5060) 82, PARJ(82), CHPARJ(82)
+ WRITE(M11,5040) 92, MSTP(92), CHMSTP(92)
+ CH40='FSI SCI/GAL selection'
+ WRITE(M11,6040) 1, MSWI(1), CH40
+ CH40='FSI SCI/GAL sea quark treatment'
+ WRITE(M11,6040) 2, MSWI(2), CH40
+ CH40='FSI SCI/GAL sea quark treatment parm'
+ WRITE(M11,6050) 1, PARSCI(1), CH40
+ CH40='FSI SCI/GAL string reco probability R_0'
+ WRITE(M11,6050) 2, PARSCI(2), CH40
+ WRITE(M11,5060) 42, PARJ(42), CHPARJ(42)
+ WRITE(M11,5070) 16, MSTJ(16), CHMSTJ(16)
+ ENDIF
+ ELSEIF(CHNAME.EQ.'SCI Tune 0'.OR.CHNAME.EQ.'SCI Tune 1') THEN
+ IF (M13.GE.1) THEN
+ WRITE(M11,5010) ITUNE, CHNAME
+ CH60='see A.Edin et al, PLB366(1996)371, Z.Phys.C75(1997)57,'
+ WRITE(M11,5030) CH60
+ CH60='and T. Sjostrand & M. v. Zijl, PRD36(1987)2019'
+ WRITE(M11,5030) CH60
+ WRITE(M11,5030) ' '
+ CH70='NB! The SCI model must be run with modified '//
+ & 'Pythia v6.215:'
+ WRITE(M11,5035) CH70
+ CH70='available from http://www.isv.uu.se/thep/MC/scigal/'
+ WRITE(M11,5035) CH70
+ WRITE(M11,5030) ' '
+ ENDIF
+C...SCI Recommended settings from Uppsala web page (as per 22/08 2006)
+ MSTP(81)=1
+ MSTP(82)=1
+ PARP(81)=2.2
+ MSTP(92)=1
+ MSWI(2)=2
+ PARSCI(2)=0.50
+ MSWI(1)=2
+ PARSCI(1)=0.44
+ MSTJ(16)=0
+ IF (CHNAME.EQ.'SCI Tune 1') THEN
+C...SCI retune (P. Skands) to get better min-bias <Nch> at Tevatron
+ MSTP(81) = 1
+ MSTP(82) = 3
+ PARP(82) = 2.4
+ PARP(83) = 0.5D0
+ PARP(62) = 1.5
+ PARP(84)=0.25D0
+ IF (M13.GE.1) THEN
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 82, PARP(82), CHPARP(82)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ WRITE(M11,5050) 83, PARP(83), CHPARP(83)
+ WRITE(M11,5050) 62, PARP(62), CHPARP(62)
+ ENDIF
+ ELSE
+ IF (M13.GE.1) THEN
+ WRITE(M11,5040) 81, MSTP(81), CHMSTP(81)
+ WRITE(M11,5050) 81, PARP(81), CHPARP(81)
+ WRITE(M11,5040) 82, MSTP(82), CHMSTP(82)
+ ENDIF
+ ENDIF
+C...Output
+ IF (M13.GE.1) THEN
+ WRITE(M11,5040) 92, MSTP(92), CHMSTP(92)
+ CH40='FSI SCI/GAL selection'
+ WRITE(M11,6040) 1, MSWI(1), CH40
+ CH40='FSI SCI/GAL sea quark treatment'
+ WRITE(M11,6040) 2, MSWI(2), CH40
+ CH40='FSI SCI/GAL sea quark treatment parm'
+ WRITE(M11,6050) 1, PARSCI(1), CH40
+ CH40='FSI SCI/GAL string reco probability R_0'
+ WRITE(M11,6050) 2, PARSCI(2), CH40
+ WRITE(M11,5070) 16, MSTJ(16), CHMSTJ(16)
+ ENDIF
+
+ ELSE
+ IF (MSTU(13).GE.1) WRITE(M11,5020) ITUNE
+
+ ENDIF
+
+ 9998 IF (MSTU(13).GE.1) WRITE(M11,6000)
+
+ 9999 RETURN
+
+ 5000 FORMAT(1x,78('*')/' *',76x,'*'/' *',3x,'PYTUNE v',A6,' : ',
+ & 'Presets for underlying-event (and min-bias)',13x,'*'/' *',
+ & 20x,'Last Change : ',A8,' - P. Skands',22x,'*'/' *',76x,'*')
+ 5010 FORMAT(' *',3x,I4,1x,A16,52x,'*')
+ 5020 FORMAT(' *',3x,'Tune ',I4, ' not recognized. Using defaults.')
+ 5030 FORMAT(' *',3x,10x,A60,3x,'*')
+ 5035 FORMAT(' *',3x,A70,3x,'*')
+ 5040 FORMAT(' *',5x,'MSTP(',I2,') = ',I12,3x,A42,3x,'*')
+ 5050 FORMAT(' *',5x,'PARP(',I2,') = ',F12.4,3x,A40,5x,'*')
+ 5060 FORMAT(' *',5x,'PARJ(',I2,') = ',F12.4,3x,A40,5x,'*')
+ 5070 FORMAT(' *',5x,'MSTJ(',I2,') = ',I12,3x,A40,5x,'*')
+ 5140 FORMAT(' *',5x,'MSTP(',I3,')= ',I12,3x,A40,5x,'*')
+ 5150 FORMAT(' *',5x,'PARP(',I3,')= ',F12.4,3x,A40,5x,'*')
+ 6000 FORMAT(' *',76x,'*'/1x,32('*'),1x,'END OF PYTUNE',1x,31('*'))
+ 6040 FORMAT(' *',5x,'MSWI(',I1,') = ',I12,3x,A40,5x,'*')
+ 6050 FORMAT(' *',5x,'PARSCI(',I1,')= ',F12.4,3x,A40,5x,'*')
+
+ END
+
+C*********************************************************************
+
+C...PYEXEC
+C...Administrates the fragmentation and decay chain.
+
+ SUBROUTINE PYEXEC
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYINT1/,/PYINT4/
+C...Local array.
+ DIMENSION PS(2,6),IJOIN(100)
+
+C...Initialize and reset.
+ MSTU(24)=0
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ MSTU(29)=0
+ MSTU(31)=MSTU(31)+1
+ MSTU(1)=0
+ MSTU(2)=0
+ MSTU(3)=0
+ IF(MSTU(17).LE.0) MSTU(90)=0
+ MCONS=1
+
+C...Sum up momentum, energy and charge for starting entries.
+ NSAV=N
+ DO 110 I=1,2
+ DO 100 J=1,6
+ PS(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+ DO 130 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 130
+ DO 120 J=1,4
+ PS(1,J)=PS(1,J)+P(I,J)
+ 120 CONTINUE
+ PS(1,6)=PS(1,6)+PYCHGE(K(I,2))
+ 130 CONTINUE
+ PARU(21)=PS(1,4)
+
+C...Start by all decays of coloured resonances involved in shower.
+ NORIG=N
+ DO 140 I=1,NORIG
+ IF(K(I,1).EQ.3) THEN
+ KC=PYCOMP(K(I,2))
+ IF(MWID(KC).NE.0.AND.KCHG(KC,2).NE.0) CALL PYRESD(I)
+ ENDIF
+ 140 CONTINUE
+
+C...Prepare system for subsequent fragmentation/decay.
+ CALL PYPREP(0)
+ IF(MINT(51).NE.0) RETURN
+
+C...Loop through jet fragmentation and particle decays.
+ MBE=0
+ 150 MBE=MBE+1
+ IP=0
+ 160 IP=IP+1
+ KC=0
+ IF(K(IP,1).GT.0.AND.K(IP,1).LE.10) KC=PYCOMP(K(IP,2))
+ IF(KC.EQ.0) THEN
+
+C...Deal with any remaining undecayed resonance
+C...(normally the task of PYEVNT, so seldom used).
+ ELSEIF(MWID(KC).NE.0) THEN
+ IBEG=IP
+ IF(KCHG(KC,2).NE.0.AND.K(I,1).NE.3) THEN
+ IBEG=IP+1
+ 170 IBEG=IBEG-1
+ IF(IBEG.GE.2.AND.K(IBEG,1).EQ.2) GOTO 170
+ IF(K(IBEG,1).NE.2) IBEG=IBEG+1
+ IEND=IP-1
+ 180 IEND=IEND+1
+ IF(IEND.LT.N.AND.K(IEND,1).EQ.2) GOTO 180
+ IF(IEND.LT.N.AND.KCHG(PYCOMP(K(IEND,2)),2).EQ.0) GOTO 180
+ NJOIN=0
+ DO 190 I=IBEG,IEND
+ IF(KCHG(PYCOMP(K(IEND,2)),2).NE.0) THEN
+ NJOIN=NJOIN+1
+ IJOIN(NJOIN)=I
+ ENDIF
+ 190 CONTINUE
+ ENDIF
+ CALL PYRESD(IP)
+ CALL PYPREP(IBEG)
+ IF(MINT(51).NE.0) RETURN
+
+C...Particle decay if unstable and allowed. Save long-lived particle
+C...decays until second pass after Bose-Einstein effects.
+ ELSEIF(KCHG(KC,2).EQ.0) THEN
+ IF(MSTJ(21).GE.1.AND.MDCY(KC,1).GE.1.AND.(MSTJ(51).LE.0.OR.MBE
+ & .EQ.2.OR.PMAS(KC,2).GE.PARJ(91).OR.IABS(K(IP,2)).EQ.311))
+ & CALL PYDECY(IP)
+
+C...Decay products may develop a shower.
+ IF(MSTJ(92).GT.0) THEN
+ IP1=MSTJ(92)
+ QMAX=SQRT(MAX(0D0,(P(IP1,4)+P(IP1+1,4))**2-(P(IP1,1)+P(IP1+1,
+ & 1))**2-(P(IP1,2)+P(IP1+1,2))**2-(P(IP1,3)+P(IP1+1,3))**2))
+ MINT(33)=0
+ if(parj(200).ne.1.) CALL PYSHOW(IP1,IP1+1,QMAX)
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP1,IP1+1,QMAX)
+ CALL PYPREP(IP1)
+ IF(MINT(51).NE.0) RETURN
+ MSTJ(92)=0
+ ELSEIF(MSTJ(92).LT.0) THEN
+ IP1=-MSTJ(92)
+ MINT(33)=0
+ if(parj(200).ne.1.) CALL PYSHOW(IP1,-3,P(IP,5))
+ if(parj(200).eq.1.) CALL PYSHOWQ(IP1,-3,P(IP,5))
+ CALL PYPREP(IP1)
+ IF(MINT(51).NE.0) RETURN
+ MSTJ(92)=0
+ ENDIF
+
+C...Jet fragmentation: string or independent fragmentation.
+ ELSEIF(K(IP,1).EQ.1.OR.K(IP,1).EQ.2) THEN
+ MFRAG=MSTJ(1)
+ IF(MFRAG.GE.1.AND.K(IP,1).EQ.1) MFRAG=2
+ IF(MSTJ(21).GE.2.AND.K(IP,1).EQ.2.AND.N.GT.IP) THEN
+ IF(K(IP+1,1).EQ.1.AND.K(IP+1,3).EQ.K(IP,3).AND.
+ & K(IP,3).GT.0.AND.K(IP,3).LT.IP) THEN
+ IF(KCHG(PYCOMP(K(K(IP,3),2)),2).EQ.0) MFRAG=MIN(1,MFRAG)
+ ENDIF
+ ENDIF
+ IF(MFRAG.EQ.1) CALL PYSTRF(IP)
+ IF(MFRAG.EQ.2) CALL PYINDF(IP)
+ IF(MFRAG.EQ.2.AND.K(IP,1).EQ.1) MCONS=0
+ IF(MFRAG.EQ.2.AND.(MSTJ(3).LE.0.OR.MOD(MSTJ(3),5).EQ.0)) MCONS=0
+ ENDIF
+
+C...Loop back if enough space left in PYJETS and no error abort.
+ IF(MSTU(24).NE.0.AND.MSTU(21).GE.2) THEN
+ ELSEIF(IP.LT.N.AND.N.LT.MSTU(4)-20-MSTU(32)) THEN
+ GOTO 160
+ ELSEIF(IP.LT.N) THEN
+ CALL PYERRM(11,'(PYEXEC:) no more memory left in PYJETS')
+ ENDIF
+
+C...Include simple Bose-Einstein effect parametrization if desired.
+ IF(MBE.EQ.1.AND.MSTJ(51).GE.1) THEN
+ CALL PYBOEI(NSAV)
+ GOTO 150
+ ENDIF
+
+C...Check that momentum, energy and charge were conserved.
+ DO 210 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 210
+ DO 200 J=1,4
+ PS(2,J)=PS(2,J)+P(I,J)
+ 200 CONTINUE
+ PS(2,6)=PS(2,6)+PYCHGE(K(I,2))
+ 210 CONTINUE
+ PDEV=(ABS(PS(2,1)-PS(1,1))+ABS(PS(2,2)-PS(1,2))+ABS(PS(2,3)-
+ &PS(1,3))+ABS(PS(2,4)-PS(1,4)))/(1D0+ABS(PS(2,4))+ABS(PS(1,4)))
+ IF(MCONS.EQ.1.AND.PDEV.GT.PARU(11)) CALL PYERRM(15,
+ &'(PYEXEC:) four-momentum was not conserved')
+ IF(MCONS.EQ.1.AND.ABS(PS(2,6)-PS(1,6)).GT.0.1D0) CALL PYERRM(15,
+ &'(PYEXEC:) charge was not conserved')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPREP
+C...Rearranges partons along strings.
+C...Special considerations for systems with junctions, with
+C...possibility of junction-antijunction annihilation.
+C...Allows small systems to collapse into one or two particles.
+C...Checks flavours and colour singlet invariant masses.
+
+ SUBROUTINE PYPREP(IP)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYINT1/MINT(400),VINT(400)
+C...The common block of colour tags.
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYINT1/,/PYCTAG/,
+ &/PYPARS/
+ DATA NERRPR/0/
+ SAVE NERRPR
+C...Local arrays.
+ DIMENSION DPS(5),DPC(5),UE(3),PG(5),E1(3),E2(3),E3(3),E4(3),
+ &ECL(3),IJUNC(10,0:4),IPIECE(30,0:4),KFEND(4),KFQ(4),
+ &IJUR(4),PJU(4,6),IRNG(4,2),TJJ(2,5),T(5),PUL(3,5),
+ &IJCP(0:6),TJUOLD(5)
+ CHARACTER CHTMP*6
+
+C...Function to give four-product.
+ FOUR(I,J)=P(I,4)*P(J,4)-P(I,1)*P(J,1)-P(I,2)*P(J,2)-P(I,3)*P(J,3)
+
+C...Rearrange parton shower product listing along strings: begin loop.
+ MSTU(24)=0
+ NOLD=N
+ I1=N
+ NJUNC=0
+ NPIECE=0
+ NJJSTR=0
+ MSTU32=MSTU(32)+1
+ DO 100 I=MAX(1,IP),N
+C...First store junction positions.
+ IF(K(I,1).EQ.42) THEN
+ NJUNC=NJUNC+1
+ IJUNC(NJUNC,0)=I
+ IJUNC(NJUNC,4)=0
+ ENDIF
+ 100 CONTINUE
+
+ DO 250 MQGST=1,3
+ DO 240 I=MAX(1,IP),N
+C...Special treatment for junctions
+ IF (K(I,1).LE.0) GOTO 240
+ IF(K(I,1).EQ.42) THEN
+C...MQGST=2: Look for junction-junction strings (not detected in the
+C...main search below).
+ IF (MQGST.EQ.2.AND.NPIECE.NE.3*NJUNC) THEN
+ IF (NJJSTR.EQ.0) THEN
+ NJJSTR = (3*NJUNC-NPIECE)/2
+ ENDIF
+C...Check how many already identified strings end on this junction
+ ILC=0
+ DO 110 J=1,NPIECE
+ IF (IPIECE(J,4).EQ.I) ILC=ILC+1
+ 110 CONTINUE
+C...If less than 3, remaining must be to another junction
+ IF (ILC.LT.3) THEN
+ IF (ILC.NE.2) THEN
+C...Multiple j-j connections not handled yet.
+ CALL PYERRM(2,
+ & '(PYPREP:) Too many junction-junction strings.')
+ MINT(51)=1
+ RETURN
+ ENDIF
+C...The colour information in the junction is unreadable for the
+C...colour space search further down in this routine, so we must
+C...start on the colour mother of this junction and then "artificially"
+C...prevent the colour mother from connecting here again.
+ ITJUNC=MOD(K(I,4)/MSTU(5),MSTU(5))
+ KCS=4
+ IF (MOD(ITJUNC,2).EQ.0) KCS=5
+C...Switch colour if the junction-junction leg is presumably a
+C...junction mother leg rather than a junction daughter leg.
+ IF (ITJUNC.GE.3) KCS=9-KCS
+ IF (MINT(33).EQ.0) THEN
+C...Find the unconnected leg and reorder junction daughter pointers so
+C...MOD(K(I,4),MSTU(5)) always points to the junction-junction string
+C...piece.
+ IA=MOD(K(I,4),MSTU(5))
+ IF (K(IA,KCS)/MSTU(5)**2.GE.2) THEN
+ ITMP=MOD(K(I,5),MSTU(5))
+ IF (K(ITMP,KCS)/MSTU(5)**2.GE.2) THEN
+ ITMP=MOD(K(I,5)/MSTU(5),MSTU(5))
+ K(I,5)=K(I,5)+(IA-ITMP)*MSTU(5)
+ ELSE
+ K(I,5)=K(I,5)+(IA-ITMP)
+ ENDIF
+ K(I,4)=K(I,4)+(ITMP-IA)
+ IA=ITMP
+ ENDIF
+ IF (ITJUNC.LE.2) THEN
+C...Beam baryon junction
+ K(IA,KCS) = K(IA,KCS) + 2*MSTU(5)**2
+ K(I,KCS) = K(I,KCS) + 1*MSTU(5)**2
+C...Else 1 -> 2 decay junction
+ ELSE
+ K(IA,KCS) = K(IA,KCS) + MSTU(5)**2
+ K(I,KCS) = K(I,KCS) + 2*MSTU(5)**2
+ ENDIF
+ I1BEG = I1
+ NSTP = 0
+ GOTO 170
+C...Alternatively use colour tag information.
+ ELSE
+C...Find a final state parton with appropriate dangling colour tag.
+ JCT=0
+ IA=0
+ IJUMO=K(I,3)
+ DO 140 J1=MAX(1,IP),N
+ IF (K(J1,1).NE.3) GOTO 140
+C...Check for matching final-state colour tag
+ IMATCH=0
+ DO 120 J2=MAX(1,IP),N
+ IF (K(J2,1).NE.3) GOTO 120
+ IF (MCT(J1,KCS-3).EQ.MCT(J2,6-KCS)) IMATCH=1
+ 120 CONTINUE
+ IF (IMATCH.EQ.1) GOTO 140
+C...Check whether this colour tag belongs to the present junction
+C...by seeing whether any parton with this colour tag has the same
+C...mother as the junction.
+ JCT=MCT(J1,KCS-3)
+ IMATCH=0
+ DO 130 J2=MINT(84)+1,N
+ IMO2=K(J2,3)
+C...First scattering partons have IMO1 = 3 and 4.
+ IF (IMO2.EQ.MINT(83)+3.OR.IMO2.EQ.MINT(83)+4)
+ & IMO2=IMO2-2
+ IF (MCT(J2,KCS-3).EQ.JCT.AND.IMO2.EQ.IJUMO)
+ & IMATCH=1
+ 130 CONTINUE
+ IF (IMATCH.EQ.0) GOTO 140
+ IA=J1
+ 140 CONTINUE
+C...Check for junction-junction strings without intermediate final state
+C...glue (not detected above).
+ IF (IA.EQ.0) THEN
+ DO 160 MJU=1,NJUNC
+ IJU2=IJUNC(MJU,0)
+ IF (IJU2.EQ.I) GOTO 160
+ ITJU2=MOD(K(IJU2,4)/MSTU(5),MSTU(5))
+C...Only opposite types of junctions can connect to each other.
+ IF (MOD(ITJU2,2).EQ.MOD(ITJUNC,2)) GOTO 160
+ IS=0
+ DO 150 J=1,NPIECE
+ IF (IPIECE(J,4).EQ.IJU2) IS=IS+1
+ 150 CONTINUE
+ IF (IS.EQ.3) GOTO 160
+ IB=I
+ IA=IJU2
+ 160 CONTINUE
+ ENDIF
+C...Switch to other side of adjacent parton and step from there.
+ KCS=9-KCS
+ I1BEG = I1
+ NSTP = 0
+ GOTO 170
+ ENDIF
+ ELSE IF (ILC.NE.3) THEN
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...Look for coloured string endpoint, or (later) leftover gluon.
+ IF(K(I,1).NE.3) GOTO 240
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 240
+ KQ=KCHG(KC,2)
+ IF(KQ.EQ.0.OR.(MQGST.LE.2.AND.KQ.EQ.2)) GOTO 240
+
+C...Pick up loose string end.
+ KCS=4
+ IF(KQ*ISIGN(1,K(I,2)).LT.0) KCS=5
+ IA=I
+ IB=I
+ I1BEG=I1
+ NSTP=0
+ 170 NSTP=NSTP+1
+ IF(NSTP.GT.4*N) THEN
+ CALL PYERRM(14,'(PYPREP:) caught in infinite loop')
+ MINT(51)=1
+ RETURN
+ ENDIF
+
+C...Copy undecayed parton. Finished if reached string endpoint.
+ IF(K(IA,1).EQ.3) THEN
+ IF(I1.GE.MSTU(4)-MSTU32-5) THEN
+ CALL PYERRM(11,'(PYPREP:) no more memory left in PYJETS')
+ MINT(51)=1
+ MSTU(24)=1
+ RETURN
+ ENDIF
+ I1=I1+1
+ K(I1,1)=2
+ IF(NSTP.GE.2.AND.KCHG(PYCOMP(K(IA,2)),2).NE.2) K(I1,1)=1
+ K(I1,2)=K(IA,2)
+ K(I1,3)=IA
+ K(I1,4)=0
+ K(I1,5)=0
+ DO 180 J=1,5
+ P(I1,J)=P(IA,J)
+ V(I1,J)=V(IA,J)
+ 180 CONTINUE
+ K(IA,1)=K(IA,1)+10
+ IF(K(I1,1).EQ.1) GOTO 240
+ ENDIF
+
+C...Also finished (for now) if reached junction; then copy to end.
+ IF(K(IA,1).EQ.42) THEN
+ NCOPY=I1-I1BEG
+ IF(I1.GE.MSTU(4)-MSTU32-NCOPY-5) THEN
+ CALL PYERRM(11,'(PYPREP:) no more memory left in PYJETS')
+ MINT(51)=1
+ MSTU(24)=1
+ RETURN
+ ENDIF
+ IF (MQGST.LE.2.AND.NCOPY.NE.0) THEN
+ DO 200 ICOPY=1,NCOPY
+ DO 190 J=1,5
+ K(MSTU(4)-MSTU32-ICOPY,J)=K(I1BEG+ICOPY,J)
+ P(MSTU(4)-MSTU32-ICOPY,J)=P(I1BEG+ICOPY,J)
+ V(MSTU(4)-MSTU32-ICOPY,J)=V(I1BEG+ICOPY,J)
+ 190 CONTINUE
+ 200 CONTINUE
+ ENDIF
+C...For junction-junction strings, find end leg and reorder junction
+C...daughter pointers so MOD(K(I,4),MSTU(5)) always points to the
+C...junction-junction string piece.
+ IF (K(I,1).EQ.42.AND.MINT(33).EQ.0) THEN
+ ITMP=MOD(K(IA,4),MSTU(5))
+ IF (ITMP.NE.IB) THEN
+ IF (MOD(K(IA,5),MSTU(5)).EQ.IB) THEN
+ K(IA,5)=K(IA,5)+(ITMP-IB)
+ ELSE
+ K(IA,5)=K(IA,5)+(ITMP-IB)*MSTU(5)
+ ENDIF
+ K(IA,4)=K(IA,4)+(IB-ITMP)
+ ENDIF
+ ENDIF
+ NPIECE=NPIECE+1
+C...IPIECE:
+C...0: endpoint in original ER
+C...1:
+C...2:
+C...3: Parton immediately next to junction
+C...4: Junction
+ IPIECE(NPIECE,0)=I
+ IPIECE(NPIECE,1)=MSTU32+1
+ IPIECE(NPIECE,2)=MSTU32+NCOPY
+ IPIECE(NPIECE,3)=IB
+ IPIECE(NPIECE,4)=IA
+ MSTU32=MSTU32+NCOPY
+ I1=I1BEG
+ GOTO 240
+ ENDIF
+
+C...GOTO next parton in colour space.
+ IB=IA
+ IF (MINT(33).EQ.0) THEN
+ IF(MOD(K(IB,KCS)/MSTU(5)**2,2).EQ.0.AND.MOD(K(IB,KCS),MSTU(5
+ & )).NE.0) THEN
+ IA=MOD(K(IB,KCS),MSTU(5))
+ K(IB,KCS)=K(IB,KCS)+MSTU(5)**2
+ MREV=0
+ ELSE
+ IF(K(IB,KCS).GE.2*MSTU(5)**2.OR.MOD(K(IB,KCS)/MSTU(5),
+ & MSTU(5)).EQ.0) KCS=9-KCS
+ IA=MOD(K(IB,KCS)/MSTU(5),MSTU(5))
+ K(IB,KCS)=K(IB,KCS)+2*MSTU(5)**2
+ MREV=1
+ ENDIF
+ IF(IA.LE.0.OR.IA.GT.N) THEN
+ CALL PYERRM(12,'(PYPREP:) colour rearrangement failed')
+ IF(NERRPR.LT.5) THEN
+ NERRPR=NERRPR+1
+ WRITE(MSTU(11),*) 'started at:', I
+ WRITE(MSTU(11),*) 'ended going from',IB,' to',IA
+ WRITE(MSTU(11),*) 'MQGST =',MQGST
+ CALL PYLIST(4)
+ ENDIF
+ MINT(51)=1
+ RETURN
+ ENDIF
+ IF(MOD(K(IA,4)/MSTU(5),MSTU(5)).EQ.IB.OR.MOD(K(IA,5)/MSTU(5)
+ & ,MSTU(5)).EQ.IB) THEN
+ IF(MREV.EQ.1) KCS=9-KCS
+ IF(MOD(K(IA,KCS)/MSTU(5),MSTU(5)).NE.IB) KCS=9-KCS
+ K(IA,KCS)=K(IA,KCS)+2*MSTU(5)**2
+ ELSE
+ IF(MREV.EQ.0) KCS=9-KCS
+ IF(MOD(K(IA,KCS),MSTU(5)).NE.IB) KCS=9-KCS
+ K(IA,KCS)=K(IA,KCS)+MSTU(5)**2
+ ENDIF
+ IF(IA.NE.I) GOTO 170
+C...Use colour tag information
+ ELSE
+C...First create colour tags starting on IB if none already present.
+ IF (MCT(IB,KCS-3).EQ.0) THEN
+ CALL PYCTTR(IB,KCS,IB)
+ IF(MINT(51).NE.0) RETURN
+ ENDIF
+ JCT=MCT(IB,KCS-3)
+ IFOUND=0
+C...Find final state tag partner
+ DO 210 IT=MAX(1,IP),N
+ IF (IT.EQ.IB) GOTO 210
+ IF (MCT(IT,6-KCS).EQ.JCT.AND.K(IT,1).LT.10.AND.K(IT,1).GT
+ & .0) THEN
+ IFOUND=IFOUND+1
+ IA=IT
+ ENDIF
+ 210 CONTINUE
+C...Just copy and goto next if exactly one partner found.
+ IF (IFOUND.EQ.1) THEN
+ GOTO 170
+C...When no match found, match is presumably junction.
+ ELSEIF (IFOUND.EQ.0.AND.MQGST.LE.2) THEN
+C...Check whether this colour tag matches a junction
+C...by seeing whether any parton with this colour tag has the same
+C...mother as a junction.
+C...NB: Only type 1 and 2 junctions handled presently.
+ DO 230 IJU=1,NJUNC
+ IJUMO=K(IJUNC(IJU,0),3)
+ ITJUNC=MOD(K(IJUNC(IJU,0),4)/MSTU(5),MSTU(5))
+C...Colours only connect to junctions, anti-colours to antijunctions:
+ IF (MOD(ITJUNC+1,2)+1.NE.KCS-3) GOTO 230
+ IMATCH=0
+ DO 220 J1=MAX(1,IP),N
+ IF (K(J1,1).LE.0) GOTO 220
+C...First scattering partons have IMO1 = 3 and 4.
+ IMO=K(J1,3)
+ IF (IMO.EQ.MINT(83)+3.OR.IMO.EQ.MINT(83)+4)
+ & IMO=IMO-2
+ IF (MCT(J1,KCS-3).EQ.JCT.AND.IMO.EQ.IJUMO.AND.MOD(K(J1
+ & ,3+ITJUNC)/MSTU(5),MSTU(5)).EQ.IJUNC(IJU,0))
+ & IMATCH=1
+C...Attempt at handling type > 3 junctions also. Not tested.
+ IF (ITJUNC.GE.3.AND.MCT(J1,6-KCS).EQ.JCT.AND.IMO.EQ
+ & .IJUMO) IMATCH=1
+ 220 CONTINUE
+ IF (IMATCH.EQ.0) GOTO 230
+ IA=IJUNC(IJU,0)
+ IFOUND=IFOUND+1
+ 230 CONTINUE
+
+ IF (IFOUND.EQ.1) THEN
+ GOTO 170
+ ELSEIF (IFOUND.EQ.0) THEN
+ WRITE(CHTMP,*) JCT
+ CALL PYERRM(12,'(PYPREP:) no matching colour tag: '
+ & //CHTMP)
+ IF(NERRPR.LT.5) THEN
+ NERRPR=NERRPR+1
+ CALL PYLIST(4)
+ ENDIF
+ MINT(51)=1
+ RETURN
+ ENDIF
+ ELSEIF (IFOUND.GE.2) THEN
+ WRITE(CHTMP,*) JCT
+ CALL PYERRM(12
+ & ,'(PYPREP:) too many occurences of colour line: '//
+ & CHTMP)
+ IF(NERRPR.LT.5) THEN
+ NERRPR=NERRPR+1
+ CALL PYLIST(4)
+ ENDIF
+ MINT(51)=1
+ RETURN
+ ENDIF
+ ENDIF
+ K(I1,1)=1
+ 240 CONTINUE
+ 250 CONTINUE
+
+C...Junction systems remain.
+ IJU=0
+ IJUS=0
+ IJUCNT=0
+ MREV=0
+ IJJSTR=0
+ 260 IJUCNT=IJUCNT+1
+ IF (IJUCNT.LE.NJUNC) THEN
+C...If we are not processing a j-j string, treat this junction as new.
+ IF (IJJSTR.EQ.0) THEN
+ IJU=IJUNC(IJUCNT,0)
+ MREV=0
+C...If junction has already been read, ignore it.
+ IF (IJUNC(IJUCNT,4).EQ.1) GOTO 260
+C...If we are on a j-j string, goto second j-j junction.
+ ELSE
+ IJUCNT=IJUCNT-1
+ IJU=IJUS
+ ENDIF
+C...Mark selected junction read.
+ DO 270 J=1,NJUNC
+ IF (IJUNC(J,0).EQ.IJU) IJUNC(J,4)=1
+ 270 CONTINUE
+C...Determine junction type
+ ITJUNC = MOD(K(IJU,4)/MSTU(5),MSTU(5))
+C...Type 1 and 2 junctions: ~chi -> q q q, ~chi -> qbar,qbar,qbar
+C...Type 3 and 4 junctions: ~qbar -> q q , ~q -> qbar qbar
+C...Type 5 and 6 junctions: ~g -> q q q, ~g -> qbar qbar qbar
+ IF (ITJUNC.GE.1.AND.ITJUNC.LE.6) THEN
+ IHK=0
+ 280 IHK=IHK+1
+C...Find which quarks belong to given junction.
+ IHF=0
+ DO 290 IPC=1,NPIECE
+ IF (IPIECE(IPC,4).EQ.IJU) THEN
+ IHF=IHF+1
+ IF (IHF.EQ.IHK) IEND=IPIECE(IPC,3)
+ ENDIF
+ IF (IHK.EQ.3.AND.IPIECE(IPC,0).EQ.IJU) IEND=IPIECE(IPC,3)
+ 290 CONTINUE
+C...IHK = 3 is special. Either normal string piece, or j-j string.
+ IF(IHK.EQ.3) THEN
+ IF (MREV.NE.1) THEN
+ DO 300 IPC=1,NPIECE
+C...If there is a j-j string starting on the present junction which has
+C...zero length, insert next junction immediately.
+ IF (IPIECE(IPC,0).EQ.IJU.AND.K(IPIECE(IPC,4),1)
+ & .EQ.42.AND.IPIECE(IPC,1)-1-IPIECE(IPC,2).EQ.0) THEN
+ IJJSTR = 1
+ GOTO 340
+ ENDIF
+ 300 CONTINUE
+ MREV = 1
+C...If MREV is 1 and IHK is 3 we are finished with this system.
+ ELSE
+ MREV=0
+ GOTO 260
+ ENDIF
+ ENDIF
+
+C...If we've gotten this far, then either IHK < 3, or
+C...an interjunction string exists, or just a third normal string.
+ IJUNC(IJUCNT,IHK)=0
+ IJJSTR = 0
+C..Order pieces belonging to this junction. Also look for j-j.
+ DO 310 IPC=1,NPIECE
+ IF (IPIECE(IPC,3).EQ.IEND) IJUNC(IJUCNT,IHK)=IPC
+ IF (IHK.EQ.3.AND.IPIECE(IPC,0).EQ.IJUNC(IJUCNT,0)
+ & .AND.K(IPIECE(IPC,4),1).EQ.42) THEN
+ IJUNC(IJUCNT,IHK)=IPC
+ IJJSTR = 1
+ MREV = 0
+ ENDIF
+ 310 CONTINUE
+C...Copy back chains in proper order. MREV=0/1 : descending/ascending
+ IPC=IJUNC(IJUCNT,IHK)
+C...Temporary solution to cover for bug.
+ IF(IPC.LE.0) THEN
+ CALL PYERRM(12,'(PYPREP:) fails to hook up junctions')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ DO 330 ICP=IPIECE(IPC,1+MREV),IPIECE(IPC,2-MREV),1-2*MREV
+ I1=I1+1
+ DO 320 J=1,5
+ K(I1,J)=K(MSTU(4)-ICP,J)
+ P(I1,J)=P(MSTU(4)-ICP,J)
+ V(I1,J)=V(MSTU(4)-ICP,J)
+ 320 CONTINUE
+ 330 CONTINUE
+ K(I1,1)=2
+C...Mark last quark.
+ IF (MREV.EQ.1.AND.IHK.GE.2) K(I1,1)=1
+C...Do not insert junctions at wrong places.
+ IF(IHK.LT.2.OR.MREV.NE.0) GOTO 360
+C...Insert junction.
+ 340 IJUS = IJU
+ IF (IHK.EQ.3) THEN
+C...Shift to end junction if a j-j string has been processed.
+ IF (IJJSTR.NE.0) IJUS = IPIECE(IPC,4)
+ MREV= 1
+ ENDIF
+ I1=I1+1
+ DO 350 J=1,5
+ K(I1,J)=0
+ P(I1,J)=0.
+ V(I1,J)=0.
+ 350 CONTINUE
+ K(I1,1)=41
+ K(IJUS,1)=K(IJUS,1)+10
+ K(I1,2)=K(IJUS,2)
+ K(I1,3)=IJUS
+ 360 IF (IHK.LT.3) GOTO 280
+ ELSE
+ CALL PYERRM(12,'(PYPREP:) Unknown junction type')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ IF (IJUCNT.NE.NJUNC) GOTO 260
+ ENDIF
+ N=I1
+
+C...Rearrange three strings from junction, e.g. in case one has been
+C...shortened by shower, so the last is the largest-energy one.
+ IF(NJUNC.GE.1) THEN
+C...Find systems with exactly one junction.
+ MJUN1=0
+ NBEG=NOLD+1
+ DO 470 I=NOLD+1,N
+ IF(K(I,1).NE.1.AND.K(I,1).NE.41) THEN
+ ELSEIF(K(I,1).EQ.41) THEN
+ MJUN1=MJUN1+1
+ ELSEIF(K(I,1).EQ.1.AND.MJUN1.NE.1) THEN
+ MJUN1=0
+ NBEG=I+1
+ ELSE
+ NEND=I
+C...Sum up energy-momentum in each junction string.
+ DO 370 J=1,5
+ PJU(1,J)=0D0
+ PJU(2,J)=0D0
+ PJU(3,J)=0D0
+ 370 CONTINUE
+ NJU=0
+ DO 390 I1=NBEG,NEND
+ IF(K(I1,2).NE.21) THEN
+ NJU=NJU+1
+ IJUR(NJU)=I1
+ ENDIF
+ DO 380 J=1,5
+ PJU(MIN(NJU,3),J)=PJU(MIN(NJU,3),J)+P(I1,J)
+ 380 CONTINUE
+ 390 CONTINUE
+C...Find which of them has highest energy (minus mass) in rest frame.
+ DO 400 J=1,5
+ PJU(4,J)=PJU(1,J)+PJU(2,J)+PJU(3,J)
+ 400 CONTINUE
+ PMJU=SQRT(MAX(0D0,PJU(4,4)**2-PJU(4,1)**2-PJU(4,2)**2-
+ & PJU(4,3)**2))
+ DO 410 I2=1,3
+ PJU(I2,6)=(PJU(4,4)*PJU(I2,4)-PJU(4,1)*PJU(I2,1)-
+ & PJU(4,2)*PJU(I2,2)-PJU(4,3)*PJU(I2,3))/PMJU-PJU(I2,5)
+ 410 CONTINUE
+ IF(PJU(3,6).LT.MIN(PJU(1,6),PJU(2,6))) THEN
+C...Decide how to rearrange so that new last has highest energy.
+ IF(PJU(1,6).LT.PJU(2,6)) THEN
+ IRNG(1,1)=IJUR(1)
+ IRNG(1,2)=IJUR(2)-1
+ IRNG(2,1)=IJUR(4)
+ IRNG(2,2)=IJUR(3)+1
+ IRNG(4,1)=IJUR(3)-1
+ IRNG(4,2)=IJUR(2)
+ ELSE
+ IRNG(1,1)=IJUR(4)
+ IRNG(1,2)=IJUR(3)+1
+ IRNG(2,1)=IJUR(2)
+ IRNG(2,2)=IJUR(3)-1
+ IRNG(4,1)=IJUR(2)-1
+ IRNG(4,2)=IJUR(1)
+ ENDIF
+ IRNG(3,1)=IJUR(3)
+ IRNG(3,2)=IJUR(3)
+C...Copy in correct order below bottom of current event record.
+ I2=N
+ DO 440 II=1,4
+ DO 430 I1=IRNG(II,1),IRNG(II,2),
+ & ISIGN(1,IRNG(II,2)-IRNG(II,1))
+ I2=I2+1
+ IF(I2.GE.MSTU(4)-MSTU32-5) THEN
+ CALL PYERRM(11,
+ & '(PYPREP:) no more memory left in PYJETS')
+ MINT(51)=1
+ MSTU(24)=1
+ RETURN
+ ENDIF
+ DO 420 J=1,5
+ K(I2,J)=K(I1,J)
+ P(I2,J)=P(I1,J)
+ V(I2,J)=V(I1,J)
+ 420 CONTINUE
+ IF(K(I2,1).EQ.1) K(I2,1)=2
+ 430 CONTINUE
+ 440 CONTINUE
+ K(I2,1)=1
+C...Copy back up, overwriting but now in correct order.
+ DO 460 I1=NBEG,NEND
+ I2=I1-NBEG+N+1
+ DO 450 J=1,5
+ K(I1,J)=K(I2,J)
+ P(I1,J)=P(I2,J)
+ V(I1,J)=V(I2,J)
+ 450 CONTINUE
+ 460 CONTINUE
+ ENDIF
+ MJUN1=0
+ NBEG=I+1
+ ENDIF
+ 470 CONTINUE
+
+C...Check whether q-q-j-j-qbar-qbar systems should be collapsed
+C...to two q-qbar systems.
+C...(MSTJ(19)=1 forces q-q-j-j-qbar-qbar.)
+ IF (MSTJ(19).NE.1) THEN
+ MJUN1 = 0
+ JJGLUE = 0
+ NBEG = NOLD+1
+C...Force collapse when MSTJ(19)=2.
+ IF (MSTJ(19).EQ.2) THEN
+ DELMJJ = 1D9
+ DELMQQ = 0D0
+ ENDIF
+C...Find systems with exactly two junctions.
+ DO 700 I=NOLD+1,N
+C...Count junctions
+ IF (K(I,1).EQ.41) THEN
+ MJUN1 = MJUN1+1
+C...Check for interjunction gluons
+ IF (MJUN1.EQ.2.AND.K(I-1,1).NE.41) THEN
+ JJGLUE = 1
+ ENDIF
+ ELSEIF(K(I,1).EQ.1.AND.(MJUN1.NE.2)) THEN
+C...If end of system reached with either zero or one junction, restart
+C...with next system.
+ MJUN1 = 0
+ JJGLUE = 0
+ NBEG = I+1
+ ELSEIF(K(I,1).EQ.1) THEN
+C...If end of system reached with exactly two junctions, compute string
+C...length measure for the (q-q-j-j-qbar-qbar) topology and compare with
+C...length measure for the (q-qbar)(q-qbar) topology.
+ NEND=I
+C...Loop down through chain.
+ ISID=0
+ DO 480 I1=NBEG,NEND
+C...Store string piece division locations in event record
+ IF (K(I1,2).NE.21) THEN
+ ISID = ISID+1
+ IJCP(ISID) = I1
+ ENDIF
+ 480 CONTINUE
+C...Randomly choose between (1,3)(2,4) and (1,4)(2,3) topologies.
+ ISW=0
+ IF (PYR(0).LT.0.5D0) ISW=1
+C...Randomly choose which qqbar string gets the jj gluons.
+ IGS=1
+ IF (PYR(0).GT.0.5D0) IGS=2
+C...Only compute string lengths when no topology forced.
+ IF (MSTJ(19).EQ.0) THEN
+C...Repeat following for each junction
+ DO 570 IJU=1,2
+C...Initialize iterative procedure for finding JRF
+ IJRFIT=0
+ DO 490 IX=1,3
+ TJUOLD(IX)=0D0
+ 490 CONTINUE
+ TJUOLD(4)=1D0
+C...Start iteration. Sum up momenta in string pieces
+ 500 DO 540 IJS=1,3
+C...JD=-1 for first junction, +1 for second junction.
+C...Find out where piece starts and ends and which direction to go.
+ JD=2*IJU-3
+ IF (IJS.LE.2) THEN
+ IA = IJCP((IJU-1)*7 - JD*(IJS+1)) + JD
+ IB = IJCP((IJU-1)*7 - JD*IJS)
+ ELSEIF (IJS.EQ.3) THEN
+ JD =-JD
+ IA = IJCP((IJU-1)*7 + JD*(IJS)) + JD
+ IB = IJCP((IJU-1)*7 + JD*(IJS+3))
+ ENDIF
+C...Initialize junction pull 4-vector.
+ DO 510 J=1,5
+ PUL(IJS,J)=0D0
+ 510 CONTINUE
+C...Initialize weight
+ PWT = 0D0
+ PWTOLD = 0D0
+C...Sum up (weighted) momenta along each string piece
+ DO 530 ISP=IA,IB,JD
+C...If present parton not last in chain
+ IF (ISP.NE.IA.AND.ISP.NE.IB) THEN
+C...If last parton was a junction, store present weight
+ IF (K(ISP-JD,2).EQ.88) THEN
+ PWTOLD = PWT
+C...If last parton was a quark, reset to stored weight.
+ ELSEIF (K(ISP-JD,2).NE.21) THEN
+ PWT = PWTOLD
+ ENDIF
+ ENDIF
+C...Skip next parton if weight already large
+ IF (PWT.GT.10D0) GOTO 530
+C...Compute momentum in TJUOLD frame:
+ TDP=TJUOLD(1)*P(ISP,1)+TJUOLD(2)*P(ISP,2)+TJUOLD(3
+ & )*P(ISP,3)
+ BFC=TDP/(1D0+TJUOLD(4))+P(ISP,4)
+ DO 520 J=1,3
+ TMP=P(ISP,J)+TJUOLD(J)*BFC
+ PUL(IJS,J)=PUL(IJS,J)+TMP*EXP(-PWT)
+ 520 CONTINUE
+C...Boosted energy
+ TMP=TJUOLD(4)*P(ISP,4)+TDP
+ PUL(IJS,4)=PUL(IJS,J)+TMP*EXP(-PWT)
+C...Update weight
+ PWT=PWT+TMP/PARJ(48)
+C...Put |p| rather than m in 5th slot
+ PUL(IJS,5)=SQRT(PUL(IJS,1)**2+PUL(IJS,2)**2
+ & +PUL(IJS,3)**2)
+ 530 CONTINUE
+ 540 CONTINUE
+C...Compute boost
+ IJRFIT=IJRFIT+1
+ CALL PYJURF(PUL,T)
+C...Combine new boost (T) with old boost (TJUOLD)
+ TMP=T(1)*TJUOLD(1)+T(2)*TJUOLD(2)+T(3)*TJUOLD(3)
+ DO 550 IX=1,3
+ TJUOLD(IX)=T(IX)+TJUOLD(IX)*(TMP/(1D0+TJUOLD(4))+T(4
+ & ))
+ 550 CONTINUE
+ TJUOLD(4)=SQRT(1D0+TJUOLD(1)**2+TJUOLD(2)**2+TJUOLD(3)
+ & **2)
+C...If last boost small, accept JRF, else iterate.
+C...Also prevent possibility of infinite loop.
+ IF (ABS((T(4)-1D0)/TJUOLD(4)).GT.0.01D0.AND.
+ & IJRFIT.LT.MSTJ(18))THEN
+ GOTO 500
+ ELSEIF (IJRFIT.GE.MSTJ(18)) THEN
+ CALL PYERRM(1,'(PYPREP:) failed to converge on JRF')
+ ENDIF
+C...Store final boost, with change of sign since TJJ motion vector.
+ DO 560 IX=1,3
+ TJJ(IJU,IX)=-TJUOLD(IX)
+ 560 CONTINUE
+ TJJ(IJU,4)=SQRT(1D0+TJJ(IJU,1)**2+TJJ(IJU,2)**2
+ & +TJJ(IJU,3)**2)
+ 570 CONTINUE
+C...String length measure for (q-qbar)(q-qbar) topology.
+C...Note only momenta of nearest partons used (since rest of system
+C...identical).
+ IF (JJGLUE.EQ.0) THEN
+ DELMQQ=4D0*FOUR(IJCP(2)-1,IJCP(4+ISW)+1)*FOUR(IJCP(3)
+ & -1,IJCP(5-ISW)+1)
+ ELSE
+C...Put jj gluons on selected string (IGS selected randomly above).
+ IF (IGS.EQ.1) THEN
+ DELMQQ=8D0*FOUR(IJCP(2)-1,IJCP(4)-1)*FOUR(IJCP(3)+1
+ & ,IJCP(4+ISW)+1)*FOUR(IJCP(3)-1,IJCP(5-ISW)+1)
+ ELSE
+ DELMQQ=8D0*FOUR(IJCP(2)-1,IJCP(4+ISW)+1)
+ & *FOUR(IJCP(3)-1,IJCP(4)-1)*FOUR(IJCP(3)+1
+ & ,IJCP(5-ISW)+1)
+ ENDIF
+ ENDIF
+C...String length measure for q-q-j-j-q-q topology.
+ T1G1=0D0
+ T2G2=0D0
+ T1T2=0D0
+ T1P1=0D0
+ T1P2=0D0
+ T2P3=0D0
+ T2P4=0D0
+ ISGN=-1
+C...Note only momenta of nearest partons used (since rest of system
+C...identical).
+ DO 580 IX=1,4
+ IF (IX.EQ.4) ISGN=1
+ T1P1=T1P1+ISGN*TJJ(1,IX)*P(IJCP(2)-1,IX)
+ T1P2=T1P2+ISGN*TJJ(1,IX)*P(IJCP(3)-1,IX)
+ T2P3=T2P3+ISGN*TJJ(2,IX)*P(IJCP(4)+1,IX)
+ T2P4=T2P4+ISGN*TJJ(2,IX)*P(IJCP(5)+1,IX)
+ IF (JJGLUE.EQ.0) THEN
+C...Junction motion vector dot product gives length when inter-junction
+C...gluons absent.
+ T1T2=T1T2+ISGN*TJJ(1,IX)*TJJ(2,IX)
+ ELSE
+C...Junction motion vector dot products with gluon momenta give length
+C...when inter-junction gluons present.
+ T1G1=T1G1+ISGN*TJJ(1,IX)*P(IJCP(3)+1,IX)
+ T2G2=T2G2+ISGN*TJJ(2,IX)*P(IJCP(4)-1,IX)
+ ENDIF
+ 580 CONTINUE
+ DELMJJ=16D0*T1P1*T1P2*T2P3*T2P4
+ IF (JJGLUE.EQ.0) THEN
+ DELMJJ=DELMJJ*(T1T2+SQRT(T1T2**2-1))
+ ELSE
+ DELMJJ=DELMJJ*4D0*T1G1*T2G2
+ ENDIF
+ ENDIF
+C...If delmjj > delmqq collapse string system to q-qbar q-qbar
+C...(Always the case for MSTJ(19)=2 due to initialization above)
+ IF (DELMJJ.GT.DELMQQ) THEN
+C...Put new system at end of event record
+ NCOP=N
+ DO 650 IST=1,2
+ DO 600 ICOP=IJCP(IST),IJCP(IST+1)-1
+ NCOP=NCOP+1
+ DO 590 IX=1,5
+ P(NCOP,IX)=P(ICOP,IX)
+ K(NCOP,IX)=K(ICOP,IX)
+ 590 CONTINUE
+ 600 CONTINUE
+ IF (JJGLUE.NE.0.AND.IST.EQ.IGS) THEN
+C...Insert inter-junction gluon string piece (reversed)
+ NJJGL=0
+ DO 620 ICOP=IJCP(4)-1,IJCP(3)+1,-1
+ NJJGL=NJJGL+1
+ NCOP=NCOP+1
+ DO 610 IX=1,5
+ P(NCOP,IX)=P(ICOP,IX)
+ K(NCOP,IX)=K(ICOP,IX)
+ 610 CONTINUE
+ 620 CONTINUE
+ ENDIF
+ IFC=-2*IST+3
+ DO 640 ICOP=IJCP(IST+IFC*ISW+3)+1,IJCP(IST+IFC*ISW+4)
+ NCOP=NCOP+1
+ DO 630 IX=1,5
+ P(NCOP,IX)=P(ICOP,IX)
+ K(NCOP,IX)=K(ICOP,IX)
+ 630 CONTINUE
+ 640 CONTINUE
+ K(NCOP,1)=1
+ 650 CONTINUE
+C...Copy system back in right order
+ DO 670 ICOP=NBEG,NEND-2
+ DO 660 IX=1,5
+ P(ICOP,IX)=P(N+ICOP-NBEG+1,IX)
+ K(ICOP,IX)=K(N+ICOP-NBEG+1,IX)
+ 660 CONTINUE
+ 670 CONTINUE
+C...Shift down rest of event record
+ DO 690 ICOP=NEND+1,N
+ DO 680 IX=1,5
+ P(ICOP-2,IX)=P(ICOP,IX)
+ K(ICOP-2,IX)=K(ICOP,IX)
+ 680 CONTINUE
+ 690 CONTINUE
+C...Update length of event record.
+ N=N-2
+ ENDIF
+ MJUN1=0
+ NBEG=I+1
+ ENDIF
+ 700 CONTINUE
+ ENDIF
+ ENDIF
+
+C...Done if no checks on small-mass systems.
+ IF(MSTJ(14).LT.0) RETURN
+ IF(MSTJ(14).EQ.0) GOTO 1140
+
+C...Find lowest-mass colour singlet jet system.
+ NS=N
+ 710 NSIN=N-NS
+ PDMIN=1D0+PARJ(32)
+ IC=0
+ DO 770 I=MAX(1,IP),N
+ IF(K(I,1).NE.1.AND.K(I,1).NE.2) THEN
+ ELSEIF(K(I,1).EQ.2.AND.IC.EQ.0) THEN
+ NSIN=NSIN+1
+ IC=I
+ DO 720 J=1,4
+ DPS(J)=P(I,J)
+ 720 CONTINUE
+ MSTJ(93)=1
+ DPS(5)=PYMASS(K(I,2))
+ ELSEIF(K(I,1).EQ.2.AND.K(I,2).NE.21) THEN
+ DO 730 J=1,4
+ DPS(J)=DPS(J)+P(I,J)
+ 730 CONTINUE
+ MSTJ(93)=1
+ DPS(5)=DPS(5)+PYMASS(K(I,2))
+ ELSEIF(K(I,1).EQ.2) THEN
+ DO 740 J=1,4
+ DPS(J)=DPS(J)+P(I,J)
+ 740 CONTINUE
+ ELSEIF(IC.NE.0.AND.KCHG(PYCOMP(K(I,2)),2).NE.0) THEN
+ DO 750 J=1,4
+ DPS(J)=DPS(J)+P(I,J)
+ 750 CONTINUE
+ MSTJ(93)=1
+ DPS(5)=DPS(5)+PYMASS(K(I,2))
+ PD=SQRT(MAX(0D0,DPS(4)**2-DPS(1)**2-DPS(2)**2-DPS(3)**2))-
+ & DPS(5)
+ IF(PD.LT.PDMIN) THEN
+ PDMIN=PD
+ DO 760 J=1,5
+ DPC(J)=DPS(J)
+ 760 CONTINUE
+ IC1=IC
+ IC2=I
+ ENDIF
+ IC=0
+ ELSE
+ NSIN=NSIN+1
+ ENDIF
+ 770 CONTINUE
+
+C...Done if lowest-mass system above threshold for string frag.
+ IF(PDMIN.GE.PARJ(32)) GOTO 1140
+
+C...Fill small-mass system as cluster.
+ NSAV=N
+ PECM=SQRT(MAX(0D0,DPC(4)**2-DPC(1)**2-DPC(2)**2-DPC(3)**2))
+ K(N+1,1)=11
+ K(N+1,2)=91
+ K(N+1,3)=IC1
+ P(N+1,1)=DPC(1)
+ P(N+1,2)=DPC(2)
+ P(N+1,3)=DPC(3)
+ P(N+1,4)=DPC(4)
+ P(N+1,5)=PECM
+
+C...Set up history, assuming cluster -> 2 hadrons.
+ NBODY=2
+ K(N+1,4)=N+2
+ K(N+1,5)=N+3
+ K(N+2,1)=1
+ K(N+3,1)=1
+ IF(MSTU(16).NE.2) THEN
+ K(N+2,3)=N+1
+ K(N+3,3)=N+1
+ ELSE
+ K(N+2,3)=IC1
+ K(N+3,3)=IC2
+ ENDIF
+ K(N+2,4)=0
+ K(N+3,4)=0
+ K(N+2,5)=0
+ K(N+3,5)=0
+ V(N+1,5)=0D0
+ V(N+2,5)=0D0
+ V(N+3,5)=0D0
+
+C...Find total flavour content - complicated by presence of junctions.
+ NQ=0
+ NDIQ=0
+ DO 780 I=IC1,IC2
+ IF((K(I,1).EQ.1.OR.K(I,1).EQ.2).AND.K(I,2).NE.21) THEN
+ NQ=NQ+1
+ KFQ(NQ)=K(I,2)
+ IF(IABS(K(I,2)).GT.1000) NDIQ=NDIQ+1
+ ENDIF
+ 780 CONTINUE
+
+C...If several diquarks, split up one to give even number of flavours.
+ IF(NQ.EQ.3.AND.NDIQ.GE.2) THEN
+ I1=3
+ IF(IABS(KFQ(3)).LT.1000) I1=1
+ KFQ(4)=ISIGN(MOD(IABS(KFQ(I1))/100,10),KFQ(I1))
+ KFQ(I1)=KFQ(I1)/1000
+ NQ=4
+ NDIQ=NDIQ-1
+ ENDIF
+
+C...If four quark ends, join two to diquark.
+ IF(NQ.EQ.4.AND.NDIQ.EQ.0) THEN
+ I1=1
+ I2=2
+ IF(KFQ(I1)*KFQ(I2).LT.0) I2=3
+ IF(I2.EQ.3.AND.KFQ(I1)*KFQ(I2).LT.0) I2=4
+ KFLS=2*INT(PYR(0)+3D0*PARJ(4)/(1D0+3D0*PARJ(4)))+1
+ IF(KFQ(I1).EQ.KFQ(I2)) KFLS=3
+ KFQ(I1)=ISIGN(1000*MAX(IABS(KFQ(I1)),IABS(KFQ(I2)))+
+ & 100*MIN(IABS(KFQ(I1)),IABS(KFQ(I2)))+KFLS,KFQ(I1))
+ KFQ(I2)=KFQ(4)
+ NQ=3
+ NDIQ=1
+ ENDIF
+
+C...If two quark ends, plus quark or diquark, join quarks to diquark.
+ IF(NQ.EQ.3) THEN
+ I1=1
+ I2=2
+ IF(IABS(KFQ(I1)).GT.1000) I1=3
+ IF(IABS(KFQ(I2)).GT.1000) I2=3
+ KFLS=2*INT(PYR(0)+3D0*PARJ(4)/(1D0+3D0*PARJ(4)))+1
+ IF(KFQ(I1).EQ.KFQ(I2)) KFLS=3
+ KFQ(I1)=ISIGN(1000*MAX(IABS(KFQ(I1)),IABS(KFQ(I2)))+
+ & 100*MIN(IABS(KFQ(I1)),IABS(KFQ(I2)))+KFLS,KFQ(I1))
+ KFQ(I2)=KFQ(3)
+ NQ=2
+ NDIQ=NDIQ+1
+ ENDIF
+
+C...Form two particles from flavours of lowest-mass system, if feasible.
+ NTRY = 0
+ 790 NTRY = NTRY + 1
+
+C...Open string with two specified endpoint flavours.
+ IF(NQ.EQ.2) THEN
+ KC1=PYCOMP(KFQ(1))
+ KC2=PYCOMP(KFQ(2))
+ IF(KC1.EQ.0.OR.KC2.EQ.0) GOTO 1140
+ KQ1=KCHG(KC1,2)*ISIGN(1,KFQ(1))
+ KQ2=KCHG(KC2,2)*ISIGN(1,KFQ(2))
+ IF(KQ1+KQ2.NE.0) GOTO 1140
+C...Start with qq, if there is one. Only allow for rank 1 popcorn meson
+ 800 K1=KFQ(1)
+ IF(IABS(KFQ(2)).GT.1000) K1=KFQ(2)
+ MSTU(125)=0
+ CALL PYDCYK(K1,0,KFLN,K(N+2,2))
+ CALL PYDCYK(KFQ(1)+KFQ(2)-K1,-KFLN,KFLDMP,K(N+3,2))
+ IF(K(N+2,2).EQ.0.OR.K(N+3,2).EQ.0) GOTO 800
+
+C...Open string with four specified flavours.
+ ELSEIF(NQ.EQ.4) THEN
+ KC1=PYCOMP(KFQ(1))
+ KC2=PYCOMP(KFQ(2))
+ KC3=PYCOMP(KFQ(3))
+ KC4=PYCOMP(KFQ(4))
+ IF(KC1.EQ.0.OR.KC2.EQ.0.OR.KC3.EQ.0.OR.KC4.EQ.0) GOTO 1140
+ KQ1=KCHG(KC1,2)*ISIGN(1,KFQ(1))
+ KQ2=KCHG(KC2,2)*ISIGN(1,KFQ(2))
+ KQ3=KCHG(KC3,2)*ISIGN(1,KFQ(3))
+ KQ4=KCHG(KC4,2)*ISIGN(1,KFQ(4))
+ IF(KQ1+KQ2+KQ3+KQ4.NE.0) GOTO 1140
+C...Combine flavours pairwise to form two hadrons.
+ 810 I1=1
+ I2=2
+ IF(KQ1*KQ2.GT.0.OR.(IABS(KFQ(1)).GT.1000.AND.
+ & IABS(KFQ(2)).GT.1000)) I2=3
+ IF(I2.EQ.3.AND.(KQ1*KQ3.GT.0.OR.(IABS(KFQ(1)).GT.1000.AND.
+ & IABS(KFQ(3)).GT.1000))) I2=4
+ I3=3
+ IF(I2.EQ.3) I3=2
+ I4=10-I1-I2-I3
+ CALL PYDCYK(KFQ(I1),KFQ(I2),KFLDMP,K(N+2,2))
+ CALL PYDCYK(KFQ(I3),KFQ(I4),KFLDMP,K(N+3,2))
+ IF(K(N+2,2).EQ.0.OR.K(N+3,2).EQ.0) GOTO 810
+
+C...Closed string.
+ ELSE
+ IF(IABS(K(IC2,2)).NE.21) GOTO 1140
+C...No room for popcorn mesons in closed string -> 2 hadrons.
+ MSTU(125)=0
+ 820 CALL PYDCYK(1+INT((2D0+PARJ(2))*PYR(0)),0,KFLN,KFDMP)
+ CALL PYDCYK(KFLN,0,KFLM,K(N+2,2))
+ CALL PYDCYK(-KFLN,-KFLM,KFLDMP,K(N+3,2))
+ IF(K(N+2,2).EQ.0.OR.K(N+3,2).EQ.0) GOTO 820
+ ENDIF
+ P(N+2,5)=PYMASS(K(N+2,2))
+ P(N+3,5)=PYMASS(K(N+3,2))
+
+C...If it does not work: try again (a number of times), give up (if no
+C...place to shuffle momentum or too many flavours), or form one hadron.
+ IF(P(N+2,5)+P(N+3,5)+PARJ(64).GE.PECM) THEN
+ IF(NTRY.LT.MSTJ(17).OR.(NQ.EQ.4.AND.NTRY.LT.5*MSTJ(17))) THEN
+ GOTO 790
+ ELSEIF(NSIN.EQ.1.OR.NQ.EQ.4) THEN
+ GOTO 1140
+ ELSE
+ GOTO 890
+ END IF
+ END IF
+
+C...Perform two-particle decay of jet system.
+C...First step: find reference axis in decaying system rest frame.
+C...(Borrow slot N+2 for temporary direction.)
+ DO 830 J=1,4
+ P(N+2,J)=P(IC1,J)
+ 830 CONTINUE
+ DO 850 I=IC1+1,IC2-1
+ IF((K(I,1).EQ.1.OR.K(I,1).EQ.2).AND.
+ & KCHG(PYCOMP(K(I,2)),2).NE.0) THEN
+ FRAC1=FOUR(IC2,I)/(FOUR(IC1,I)+FOUR(IC2,I))
+ DO 840 J=1,4
+ P(N+2,J)=P(N+2,J)+FRAC1*P(I,J)
+ 840 CONTINUE
+ ENDIF
+ 850 CONTINUE
+ CALL PYROBO(N+2,N+2,0D0,0D0,-DPC(1)/DPC(4),-DPC(2)/DPC(4),
+ &-DPC(3)/DPC(4))
+ THE1=PYANGL(P(N+2,3),SQRT(P(N+2,1)**2+P(N+2,2)**2))
+ PHI1=PYANGL(P(N+2,1),P(N+2,2))
+
+C...Second step: generate isotropic/anisotropic decay.
+ PA=SQRT((PECM**2-(P(N+2,5)+P(N+3,5))**2)*(PECM**2-
+ &(P(N+2,5)-P(N+3,5))**2))/(2D0*PECM)
+ 860 UE(3)=PYR(0)
+ IF(PARJ(21).LE.0.01D0) UE(3)=1D0
+ PT2=(1D0-UE(3)**2)*PA**2
+ IF(MSTJ(16).LE.0) THEN
+ PREV=0.5D0
+ ELSE
+ IF(EXP(-PT2/(2D0*MAX(0.01D0,PARJ(21))**2)).LT.PYR(0)) GOTO 860
+ PR1=P(N+2,5)**2+PT2
+ PR2=P(N+3,5)**2+PT2
+ ALAMBD=SQRT(MAX(0D0,(PECM**2-PR1-PR2)**2-4D0*PR1*PR2))
+ PREVCF=PARJ(42)
+ IF(MSTJ(11).EQ.2) PREVCF=PARJ(39)
+ PREV=1D0/(1D0+EXP(MIN(50D0,PREVCF*ALAMBD*PARJ(40))))
+ ENDIF
+ IF(PYR(0).LT.PREV) UE(3)=-UE(3)
+ PHI=PARU(2)*PYR(0)
+ UE(1)=SQRT(1D0-UE(3)**2)*COS(PHI)
+ UE(2)=SQRT(1D0-UE(3)**2)*SIN(PHI)
+ DO 870 J=1,3
+ P(N+2,J)=PA*UE(J)
+ P(N+3,J)=-PA*UE(J)
+ 870 CONTINUE
+ P(N+2,4)=SQRT(PA**2+P(N+2,5)**2)
+ P(N+3,4)=SQRT(PA**2+P(N+3,5)**2)
+
+C...Third step: move back to event frame and set production vertex.
+ CALL PYROBO(N+2,N+3,THE1,PHI1,DPC(1)/DPC(4),DPC(2)/DPC(4),
+ &DPC(3)/DPC(4))
+ DO 880 J=1,4
+ V(N+1,J)=V(IC1,J)
+ V(N+2,J)=V(IC1,J)
+ V(N+3,J)=V(IC2,J)
+ 880 CONTINUE
+ N=N+3
+ GOTO 1120
+
+C...Else form one particle, if possible.
+ 890 NBODY=1
+ K(N+1,5)=N+2
+ DO 900 J=1,4
+ V(N+1,J)=V(IC1,J)
+ V(N+2,J)=V(IC1,J)
+ 900 CONTINUE
+
+C...Select hadron flavour from available quark flavours.
+ 910 IF(NQ.EQ.2.AND.IABS(KFQ(1)).GT.100.AND.IABS(KFQ(2)).GT.100) THEN
+ GOTO 1140
+ ELSEIF(NQ.EQ.2) THEN
+ CALL PYKFDI(KFQ(1),KFQ(2),KFLDMP,K(N+2,2))
+ ELSE
+ KFLN=1+INT((2D0+PARJ(2))*PYR(0))
+ CALL PYKFDI(KFLN,-KFLN,KFLDMP,K(N+2,2))
+ ENDIF
+ IF(K(N+2,2).EQ.0) GOTO 910
+ P(N+2,5)=PYMASS(K(N+2,2))
+
+C...Use old algorithm for E/p conservation? (EN)
+ IF (MSTJ(16).LE.0) GOTO 1080
+
+C...Find the string piece closest to the cluster by a loop
+C...over the undecayed partons not in present cluster. (EN)
+ DGLOMI=1D30
+ IBEG=0
+ I0=0
+ NJUNC=0
+ DO 940 I1=MAX(1,IP),N-1
+ IF(K(I1,1).EQ.1) NJUNC=0
+ IF(K(I1,1).EQ.41) NJUNC=NJUNC+1
+ IF(K(I1,1).EQ.41) GOTO 940
+ IF(I1.GE.IC1-1.AND.I1.LE.IC2) THEN
+ I0=0
+ ELSEIF(K(I1,1).EQ.2) THEN
+ IF(I0.EQ.0) I0=I1
+ I2=I1
+ 920 I2=I2+1
+ IF(K(I2,1).EQ.41) GOTO 940
+ IF(K(I2,1).GT.10) GOTO 920
+ IF(KCHG(PYCOMP(K(I2,2)),2).EQ.0) GOTO 920
+ IF(K(I1,2).EQ.21.AND.K(I2,2).NE.21.AND.K(I2,1).NE.1.AND.
+ & NJUNC.EQ.0) GOTO 940
+ IF(K(I1,2).NE.21.AND.K(I2,2).EQ.21.AND.NJUNC.NE.0) GOTO 940
+ IF(K(I1,2).NE.21.AND.K(I2,2).NE.21.AND.(I1.GT.I0.OR.
+ & K(I2,1).NE.1)) GOTO 940
+
+C...Define velocity vectors e1, e2, ecl and differences e3, e4.
+ DO 930 J=1,3
+ E1(J)=P(I1,J)/P(I1,4)
+ E2(J)=P(I2,J)/P(I2,4)
+ ECL(J)=P(N+1,J)/P(N+1,4)
+ E3(J)=E2(J)-E1(J)
+ E4(J)=ECL(J)-E1(J)
+ 930 CONTINUE
+
+C...Calculate minimal D=(e4-alpha*e3)**2 for 0<alpha<1.
+ E3S=E3(1)**2+E3(2)**2+E3(3)**2
+ E4S=E4(1)**2+E4(2)**2+E4(3)**2
+ E34=E3(1)*E4(1)+E3(2)*E4(2)+E3(3)*E4(3)
+ IF(E34.LE.0D0) THEN
+ DDMIN=E4S
+ ELSEIF(E34.LT.E3S) THEN
+ DDMIN=E4S-E34**2/E3S
+ ELSE
+ DDMIN=E4S-2D0*E34+E3S
+ ENDIF
+
+C...Is this the smallest so far?
+ IF(DDMIN.LT.DGLOMI) THEN
+ DGLOMI=DDMIN
+ IBEG=I0
+ IPCS=I1
+ ENDIF
+ ELSEIF(K(I1,1).EQ.1.AND.KCHG(PYCOMP(K(I1,2)),2).NE.0) THEN
+ I0=0
+ ENDIF
+ 940 CONTINUE
+
+C... Check if there are any strings to connect to the new gluon. (EN)
+ IF (IBEG.EQ.0) GOTO 1080
+
+C...Delta_m = m_clus - m_had > 0: emit a 'gluon' (EN)
+ IF (P(N+1,5).GE.P(N+2,5)) THEN
+
+C...Construct 'gluon' that is needed to put hadron on the mass shell.
+ FRAC=P(N+2,5)/P(N+1,5)
+ DO 950 J=1,5
+ P(N+2,J)=FRAC*P(N+1,J)
+ PG(J)=(1D0-FRAC)*P(N+1,J)
+ 950 CONTINUE
+
+C... Copy string with new gluon put in.
+ N=N+2
+ I=IBEG-1
+ 960 I=I+1
+ IF(K(I,1).NE.1.AND.K(I,1).NE.2.AND.K(I,1).NE.41) GOTO 960
+ IF(KCHG(PYCOMP(K(I,2)),2).EQ.0.AND.K(I,1).NE.41) GOTO 960
+ N=N+1
+ DO 970 J=1,5
+ K(N,J)=K(I,J)
+ P(N,J)=P(I,J)
+ V(N,J)=V(I,J)
+ 970 CONTINUE
+ K(I,1)=K(I,1)+10
+ K(I,4)=N
+ K(I,5)=N
+ K(N,3)=I
+ IF(I.EQ.IPCS) THEN
+ N=N+1
+ DO 980 J=1,5
+ K(N,J)=K(N-1,J)
+ P(N,J)=PG(J)
+ V(N,J)=V(N-1,J)
+ 980 CONTINUE
+ K(N,2)=21
+ K(N,3)=NSAV+1
+ ENDIF
+ IF(K(I,1).EQ.12.OR.K(I,1).EQ.51) GOTO 960
+ GOTO 1120
+
+C...Delta_m = m_clus - m_had < 0: have to absorb a 'gluon' instead,
+C...from string piece endpoints.
+ ELSE
+
+C...Begin by copying string that should give energy to cluster.
+ N=N+2
+ I=IBEG-1
+ 990 I=I+1
+ IF(K(I,1).NE.1.AND.K(I,1).NE.2.AND.K(I,1).NE.41) GOTO 990
+ IF(KCHG(PYCOMP(K(I,2)),2).EQ.0.AND.K(I,1).NE.41) GOTO 990
+ N=N+1
+ DO 1000 J=1,5
+ K(N,J)=K(I,J)
+ P(N,J)=P(I,J)
+ V(N,J)=V(I,J)
+ 1000 CONTINUE
+ K(I,1)=K(I,1)+10
+ K(I,4)=N
+ K(I,5)=N
+ K(N,3)=I
+ IF(I.EQ.IPCS) I1=N
+ IF(K(I,1).EQ.12.OR.K(I,1).EQ.51) GOTO 990
+ I2=I1+1
+
+C...Set initial Phad.
+ DO 1010 J=1,4
+ P(NSAV+2,J)=P(NSAV+1,J)
+ 1010 CONTINUE
+
+C...Calculate Pg, a part of which will be added to Phad later. (EN)
+ 1020 IF(MSTJ(16).EQ.1) THEN
+ ALPHA=1D0
+ BETA=1D0
+ ELSE
+ ALPHA=FOUR(NSAV+1,I2)/FOUR(I1,I2)
+ BETA=FOUR(NSAV+1,I1)/FOUR(I1,I2)
+ ENDIF
+ DO 1030 J=1,4
+ PG(J)=ALPHA*P(I1,J)+BETA*P(I2,J)
+ 1030 CONTINUE
+ PG(5)=SQRT(MAX(1D-20,PG(4)**2-PG(1)**2-PG(2)**2-PG(3)**2))
+
+C..Solve 2nd order equation, use the best (smallest) solution. (EN)
+ PMSCOL=P(NSAV+2,4)**2-P(NSAV+2,1)**2-P(NSAV+2,2)**2-
+ & P(NSAV+2,3)**2
+ PCLPG=(P(NSAV+2,4)*PG(4)-P(NSAV+2,1)*PG(1)-
+ & P(NSAV+2,2)*PG(2)-P(NSAV+2,3)*PG(3))/PG(5)**2
+ DELTA=SQRT(PCLPG**2+(P(NSAV+2,5)**2-PMSCOL)/PG(5)**2)-PCLPG
+
+C...If all gluon energy eaten, zero it and take a step back.
+ ITER=0
+ IF(DELTA*ALPHA.GT.1D0.AND.I1.GT.NSAV+3.AND.K(I1,2).EQ.21) THEN
+ ITER=1
+ DO 1040 J=1,4
+ P(NSAV+2,J)=P(NSAV+2,J)+P(I1,J)
+ P(I1,J)=0D0
+ 1040 CONTINUE
+ P(I1,5)=0D0
+ K(I1,1)=K(I1,1)+10
+ I1=I1-1
+ IF(K(I1,1).EQ.41) ITER=-1
+ ENDIF
+ IF(DELTA*BETA.GT.1D0.AND.I2.LT.N.AND.K(I2,2).EQ.21) THEN
+ ITER=1
+ DO 1050 J=1,4
+ P(NSAV+2,J)=P(NSAV+2,J)+P(I2,J)
+ P(I2,J)=0D0
+ 1050 CONTINUE
+ P(I2,5)=0D0
+ K(I2,1)=K(I2,1)+10
+ I2=I2+1
+ IF(K(I2,1).EQ.41) ITER=-1
+ ENDIF
+ IF(ITER.EQ.1) GOTO 1020
+
+C...If also all endpoint energy eaten, revert to old procedure.
+ IF((1D0-DELTA*ALPHA)*P(I1,4).LT.P(I1,5).OR.
+ & (1D0-DELTA*BETA)*P(I2,4).LT.P(I2,5).OR.ITER.EQ.-1) THEN
+ DO 1060 I=NSAV+3,N
+ IM=K(I,3)
+ K(IM,1)=K(IM,1)-10
+ K(IM,4)=0
+ K(IM,5)=0
+ 1060 CONTINUE
+ N=NSAV
+ GOTO 1080
+ ENDIF
+
+C... Construct the collapsed hadron and modified string partons.
+ DO 1070 J=1,4
+ P(NSAV+2,J)=P(NSAV+2,J)+DELTA*PG(J)
+ P(I1,J)=(1D0-DELTA*ALPHA)*P(I1,J)
+ P(I2,J)=(1D0-DELTA*BETA)*P(I2,J)
+ 1070 CONTINUE
+ P(I1,5)=(1D0-DELTA*ALPHA)*P(I1,5)
+ P(I2,5)=(1D0-DELTA*BETA)*P(I2,5)
+
+C...Finished with string collapse in new scheme.
+ GOTO 1120
+ ENDIF
+
+C... Use old algorithm; by choice or when in trouble.
+ 1080 CONTINUE
+C...Find parton/particle which combines to largest extra mass.
+ IR=0
+ HA=0D0
+ HSM=0D0
+ DO 1100 MCOMB=1,3
+ IF(IR.NE.0) GOTO 1100
+ DO 1090 I=MAX(1,IP),N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10.OR.(I.GE.IC1.AND.I.LE.IC2
+ & .AND.K(I,1).GE.1.AND.K(I,1).LE.2)) GOTO 1090
+ IF(MCOMB.EQ.1) KCI=PYCOMP(K(I,2))
+ IF(MCOMB.EQ.1.AND.KCI.EQ.0) GOTO 1090
+ IF(MCOMB.EQ.1.AND.KCHG(KCI,2).EQ.0.AND.I.LE.NS) GOTO 1090
+ IF(MCOMB.EQ.2.AND.IABS(K(I,2)).GT.10.AND.IABS(K(I,2)).LE.100)
+ & GOTO 1090
+ HCR=DPC(4)*P(I,4)-DPC(1)*P(I,1)-DPC(2)*P(I,2)-DPC(3)*P(I,3)
+ HSR=2D0*HCR+PECM**2-P(N+2,5)**2-2D0*P(N+2,5)*P(I,5)
+ IF(HSR.GT.HSM) THEN
+ IR=I
+ HA=HCR
+ HSM=HSR
+ ENDIF
+ 1090 CONTINUE
+ 1100 CONTINUE
+
+C...Shuffle energy and momentum to put new particle on mass shell.
+ IF(IR.NE.0) THEN
+ HB=PECM**2+HA
+ HC=P(N+2,5)**2+HA
+ HD=P(IR,5)**2+HA
+ HK2=0.5D0*(HB*SQRT(MAX(0D0,((HB+HC)**2-4D0*(HB+HD)*P(N+2,5)**2)/
+ & (HA**2-(PECM*P(IR,5))**2)))-(HB+HC))/(HB+HD)
+ HK1=(0.5D0*(P(N+2,5)**2-PECM**2)+HD*HK2)/HB
+ DO 1110 J=1,4
+ P(N+2,J)=(1D0+HK1)*DPC(J)-HK2*P(IR,J)
+ P(IR,J)=(1D0+HK2)*P(IR,J)-HK1*DPC(J)
+ 1110 CONTINUE
+ N=N+2
+ ELSE
+ CALL PYERRM(3,'(PYPREP:) no match for collapsing cluster')
+ RETURN
+ ENDIF
+
+C...Mark collapsed system and store daughter pointers. Iterate.
+ 1120 DO 1130 I=IC1,IC2
+ IF((K(I,1).EQ.1.OR.K(I,1).EQ.2).AND.
+ & KCHG(PYCOMP(K(I,2)),2).NE.0) THEN
+ K(I,1)=K(I,1)+10
+ IF(MSTU(16).NE.2) THEN
+ K(I,4)=NSAV+1
+ K(I,5)=NSAV+1
+ ELSE
+ K(I,4)=NSAV+2
+ K(I,5)=NSAV+1+NBODY
+ ENDIF
+ ENDIF
+ IF(K(I,1).EQ.41) K(I,1)=K(I,1)+10
+ 1130 CONTINUE
+ IF(N.LT.MSTU(4)-MSTU(32)-5) GOTO 710
+
+C...Check flavours and invariant masses in parton systems.
+ 1140 NP=0
+ KFN=0
+ KQS=0
+ NJU=0
+ DO 1150 J=1,5
+ DPS(J)=0D0
+ 1150 CONTINUE
+ DO 1180 I=MAX(1,IP),N
+ IF(K(I,1).EQ.41) NJU=NJU+1
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 1180
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 1180
+ KQ=KCHG(KC,2)*ISIGN(1,K(I,2))
+ IF(KQ.EQ.0) GOTO 1180
+ NP=NP+1
+ IF(KQ.NE.2) THEN
+ KFN=KFN+1
+ KQS=KQS+KQ
+ MSTJ(93)=1
+ DPS(5)=DPS(5)+PYMASS(K(I,2))
+ ENDIF
+ DO 1160 J=1,4
+ DPS(J)=DPS(J)+P(I,J)
+ 1160 CONTINUE
+ IF(K(I,1).EQ.1) THEN
+ NFERR=0
+ IF(NJU.EQ.0.AND.NP.NE.1) THEN
+ IF(KFN.EQ.1.OR.KFN.GE.3.OR.KQS.NE.0) NFERR=1
+ ELSEIF(NJU.EQ.1) THEN
+ IF(KFN.NE.3.OR.IABS(KQS).NE.3) NFERR=1
+ ELSEIF(NJU.EQ.2) THEN
+ IF(KFN.NE.4.OR.KQS.NE.0) NFERR=1
+ ELSEIF(NJU.GE.3) THEN
+ NFERR=1
+ ENDIF
+ IF(NFERR.EQ.1) THEN
+ CALL PYERRM(2,'(PYPREP:) unphysical flavour combination')
+ MINT(51)=1
+ RETURN
+ ENDIF
+ IF(NP.NE.1.AND.DPS(4)**2-DPS(1)**2-DPS(2)**2-DPS(3)**2.LT.
+ & (0.9D0*PARJ(32)+DPS(5))**2) CALL PYERRM(3,
+ & '(PYPREP:) too small mass in jet system')
+ NP=0
+ KFN=0
+ KQS=0
+ NJU=0
+ DO 1170 J=1,5
+ DPS(J)=0D0
+ 1170 CONTINUE
+ ENDIF
+ 1180 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSTRF
+C...Handles the fragmentation of an arbitrary colour singlet
+C...jet system according to the Lund string fragmentation model.
+
+ SUBROUTINE PYSTRF(IP)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local arrays. All MOPS variables ends with MO
+ DIMENSION DPS(5),KFL(3),PMQ(3),PX(3),PY(3),GAM(3),IE(2),PR(2),
+ &IN(9),DHM(4),DHG(4),DP(5,5),IRANK(2),MJU(4),IJU(6),PJU(5,5),
+ &TJU(5),KFJH(2),NJS(2),KFJS(2),PJS(4,5),MSTU9T(8),PARU9T(8),
+ &INMO(9),PM2QMO(2),XTMO(2),EJSTR(2),IJUORI(2),IBARRK(2),
+ &PBST(3,5),TJUOLD(5)
+
+C...Function: four-product of two vectors.
+ FOUR(I,J)=P(I,4)*P(J,4)-P(I,1)*P(J,1)-P(I,2)*P(J,2)-P(I,3)*P(J,3)
+ DFOUR(I,J)=DP(I,4)*DP(J,4)-DP(I,1)*DP(J,1)-DP(I,2)*DP(J,2)-
+ &DP(I,3)*DP(J,3)
+
+C...Reset counters.
+ MSTJ(91)=0
+ NSAV=N
+ MSTU90=MSTU(90)
+ NP=0
+ KQSUM=0
+ DO 100 J=1,5
+ DPS(J)=0D0
+ 100 CONTINUE
+ MJU(1)=0
+ MJU(2)=0
+ NTRYFN=0
+ IJUORI(1)=0
+ IJUORI(2)=0
+
+C...Identify parton system.
+ I=IP-1
+ 110 I=I+1
+ IF(I.GT.MIN(N,MSTU(4)-MSTU(32))) THEN
+ CALL PYERRM(12,'(PYSTRF:) failed to reconstruct jet system')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IF(K(I,1).NE.1.AND.K(I,1).NE.2.AND.K(I,1).NE.41) GOTO 110
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 110
+ KQ=KCHG(KC,2)*ISIGN(1,K(I,2))
+ IF(KQ.EQ.0.AND.K(I,1).NE.41) GOTO 110
+ IF(N+5*NP+11.GT.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYSTRF:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+
+C...Take copy of partons to be considered. Check flavour sum.
+ NP=NP+1
+ DO 120 J=1,5
+ K(N+NP,J)=K(I,J)
+ P(N+NP,J)=P(I,J)
+ IF(J.NE.4) DPS(J)=DPS(J)+P(I,J)
+ 120 CONTINUE
+ DPS(4)=DPS(4)+SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ K(N+NP,3)=I
+ IF(KQ.NE.2) KQSUM=KQSUM+KQ
+ IF(K(I,1).EQ.41) THEN
+ IF(MOD(KQSUM,2).EQ.0.AND.MJU(1).EQ.0) THEN
+ MJU(1)=N+NP
+ IJUORI(1)=I
+ ELSE
+ MJU(2)=N+NP
+ IJUORI(2)=I
+ ENDIF
+ ENDIF
+ IF(K(I,1).EQ.2.OR.K(I,1).EQ.41) GOTO 110
+ IF(MOD(KQSUM,3).NE.0) THEN
+ CALL PYERRM(12,'(PYSTRF:) unphysical flavour combination')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IF(MJU(1).GT.0.OR.MJU(2).GT.0) MSTU(29)=1
+
+C...Boost copied system to CM frame (for better numerical precision).
+ IF(ABS(DPS(3)).LT.0.99D0*DPS(4)) THEN
+ MBST=0
+ MSTU(33)=1
+ CALL PYROBO(N+1,N+NP,0D0,0D0,-DPS(1)/DPS(4),-DPS(2)/DPS(4),
+ & -DPS(3)/DPS(4))
+ ELSE
+ MBST=1
+ HHBZ=SQRT(MAX(1D-6,DPS(4)+DPS(3))/MAX(1D-6,DPS(4)-DPS(3)))
+ DO 130 I=N+1,N+NP
+ HHPMT=P(I,1)**2+P(I,2)**2+P(I,5)**2
+ IF(P(I,3).GT.0D0) THEN
+ HHPEZ=MAX(1D-10,(P(I,4)+P(I,3))/HHBZ)
+ P(I,3)=0.5D0*(HHPEZ-HHPMT/HHPEZ)
+ P(I,4)=0.5D0*(HHPEZ+HHPMT/HHPEZ)
+ ELSE
+ HHPEZ=MAX(1D-10,(P(I,4)-P(I,3))*HHBZ)
+ P(I,3)=-0.5D0*(HHPEZ-HHPMT/HHPEZ)
+ P(I,4)=0.5D0*(HHPEZ+HHPMT/HHPEZ)
+ ENDIF
+ 130 CONTINUE
+ ENDIF
+
+C...Search for very nearby partons that may be recombined.
+ NTRYR=0
+ NTRYWR=0
+ PARU12=PARU(12)
+ PARU13=PARU(13)
+ MJU(3)=MJU(1)
+ MJU(4)=MJU(2)
+ NR=NP
+ NRMIN=2
+ IF(MJU(1).GT.0) NRMIN=NRMIN+2
+ IF(MJU(2).GT.0) NRMIN=NRMIN+2
+ 140 IF(NR.GT.NRMIN) THEN
+ PDRMIN=2D0*PARU12
+ DO 150 I=N+1,N+NR
+ IF(I.EQ.N+NR.AND.IABS(K(N+1,2)).NE.21) GOTO 150
+ I1=I+1
+ IF(I.EQ.N+NR) I1=N+1
+ IF(K(I,1).EQ.41.OR.K(I1,1).EQ.41) GOTO 150
+ IF(MJU(1).NE.0.AND.I1.LT.MJU(1).AND.IABS(K(I1,2)).NE.21)
+ & GOTO 150
+ IF(MJU(2).NE.0.AND.I.GT.MJU(2).AND.IABS(K(I,2)).NE.21)
+ & GOTO 150
+ PAP=SQRT((P(I,1)**2+P(I,2)**2+P(I,3)**2)*(P(I1,1)**2+
+ & P(I1,2)**2+P(I1,3)**2))
+ PVP=P(I,1)*P(I1,1)+P(I,2)*P(I1,2)+P(I,3)*P(I1,3)
+ PDR=4D0*(PAP-PVP)**2/MAX(1D-6,PARU13**2*PAP+2D0*(PAP-PVP))
+ IF(PDR.LT.PDRMIN) THEN
+ IR=I
+ PDRMIN=PDR
+ ENDIF
+ 150 CONTINUE
+
+C...Recombine very nearby partons to avoid machine precision problems.
+ IF(PDRMIN.LT.PARU12.AND.IR.EQ.N+NR) THEN
+ DO 160 J=1,4
+ P(N+1,J)=P(N+1,J)+P(N+NR,J)
+ 160 CONTINUE
+ P(N+1,5)=SQRT(MAX(0D0,P(N+1,4)**2-P(N+1,1)**2-P(N+1,2)**2-
+ & P(N+1,3)**2))
+ NR=NR-1
+ GOTO 140
+ ELSEIF(PDRMIN.LT.PARU12) THEN
+ DO 170 J=1,4
+ P(IR,J)=P(IR,J)+P(IR+1,J)
+ 170 CONTINUE
+ P(IR,5)=SQRT(MAX(0D0,P(IR,4)**2-P(IR,1)**2-P(IR,2)**2-
+ & P(IR,3)**2))
+ IF(MJU(2).NE.0.AND.IR.GT.MJU(2)) K(IR,2)=K(IR+1,2)
+ DO 190 I=IR+1,N+NR-1
+ K(I,1)=K(I+1,1)
+ K(I,2)=K(I+1,2)
+ DO 180 J=1,5
+ P(I,J)=P(I+1,J)
+ 180 CONTINUE
+ 190 CONTINUE
+ IF(IR.EQ.N+NR-1) K(IR,2)=K(N+NR,2)
+ NR=NR-1
+ IF(MJU(1).GT.IR) MJU(1)=MJU(1)-1
+ IF(MJU(2).GT.IR) MJU(2)=MJU(2)-1
+ GOTO 140
+ ENDIF
+ ENDIF
+ NTRYR=NTRYR+1
+
+C...Reset particle counter. Skip ahead if no junctions are present;
+C...this is usually the case!
+ NRS=MAX(5*NR+11,NP)
+ NTRY=0
+ 200 NTRY=NTRY+1
+ IF(NTRY.GT.100.AND.NTRYR.LE.8.AND.NR.GT.NRMIN) THEN
+ PARU12=4D0*PARU12
+ PARU13=2D0*PARU13
+ GOTO 140
+ ELSEIF(NTRY.GT.100.OR.NTRYR.GT.100) THEN
+ CALL PYERRM(14,'(PYSTRF:) caught in infinite loop')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ I=N+NRS
+ MSTU(90)=MSTU90
+ IF(MJU(1).EQ.0.AND.MJU(2).EQ.0) GOTO 650
+ IF(MSTJ(12).GE.4) CALL PYERRM(29,'(PYSTRF:) sorry,'//
+ & ' junction strings not handled by MSTJ(12)>3 options')
+ DO 640 JT=1,2
+ NJS(JT)=0
+ IF(MJU(JT).EQ.0) GOTO 640
+ JS=3-2*JT
+
+C++SKANDS
+C...Find and sum up momentum on three sides of junction.
+C...Begin with previous boost = zero.
+ IJRFIT=0
+ DO 210 IX=1,3
+ TJUOLD(IX)=0D0
+ 210 CONTINUE
+ TJUOLD(4)=1D0
+ 220 IU=0
+C...Beginning and end of string system in event record.
+ I1BEG=N+1+(JT-1)*(NR-1)
+ I1END=N+NR+(JT-1)*(1-NR)
+C...Look for junction string piece end points
+ DO 230 I1=I1BEG,I1END,JS
+ IF(K(I1,2).NE.21.AND.IU.LE.5.AND.IJRFIT.EQ.0) THEN
+C...Store junction string piece end points.
+C 1-junction systems 2-junction systems
+C IU : 1 2 3 4 1 2 3 4 5 6
+C IJU(IU): q-g-g-q-g-g-j-g-q q-g-g-q-g-j-g-g-j-g-q-g-g-q
+ IU=IU+1
+ IJU(IU)=I1
+ ENDIF
+C...Sum over momenta, from junction outwards.
+ 230 CONTINUE
+ DO 280 IU=1,3
+ PWT=0D0
+C...Initialize junction drag and string piece 4-vectors.
+ DO 240 J=1,5
+ PBST(IU,J)=0D0
+ PJU(IU,J)=0D0
+ 240 CONTINUE
+C...First two branches. Inwards out means opposite direction to JS.
+C...(JS is 1 for JT=1, -1 for JT=2)
+ IF (IU.LT.3) THEN
+ I1A=IJU(IU+1)-JS
+ I1B=IJU(IU)
+ IDIR=-JS
+C...Last branch (gq or gjgqgq). Direction now reversed.
+ ELSE
+ I1A=IJU(IU)+JS
+ I1B=I1END
+ IDIR=JS
+ ENDIF
+ DO 270 I1=I1A,I1B,IDIR
+C...Sum up momentum directions with exponential suppression
+C...for use in finding junction rest frame below.
+ IF (K(I1,2).EQ.88) THEN
+C...gjgqgq type system encountered. Use current PWT as start
+C...for both strings.
+ PWTOLD=PWT
+ ELSE
+ IF (I1.EQ.IJU(5)+IDIR) PWT=PWTOLD
+C...Sum up string piece (boosted) 4-momenta.
+ DO 250 J=1,4
+ PJU(IU,J)=PJU(IU,J)+P(I1,J)
+ 250 CONTINUE
+C...Compute "junction drag" vectors from (boosted) 4-momenta (initial
+C...boost is zero, see above). Skip parton if suppression factor large.
+ IF (PWT.GT.10D0) GOTO 270
+C...Compute momentum in current frame:
+ TDP=TJUOLD(1)*P(I1,1)+TJUOLD(2)*P(I1,2)+TJUOLD(3)*P(I1,3)
+ BFC=TDP/(1D0+TJUOLD(4))+P(I1,4)
+ DO 260 J=1,3
+ PTMP=P(I1,J)+TJUOLD(J)*BFC
+ PBST(IU,J)=PBST(IU,J)+PTMP*EXP(-PWT)
+ 260 CONTINUE
+C...Boosted energy
+ PTMP=TJUOLD(4)*P(I1,4)+TDP
+ PBST(IU,4)=PBST(IU,J)+PTMP*EXP(-PWT)
+ PWT=PWT+PTMP/PARJ(48)
+ ENDIF
+ 270 CONTINUE
+C...Put |p| rather than m in 5th slot.
+ PBST(IU,5)=SQRT(PBST(IU,1)**2+PBST(IU,2)**2+PBST(IU,3)**2)
+ PJU(IU,5)=SQRT(PJU(IU,1)**2+PJU(IU,2)**2+PJU(IU,3)**2)
+ 280 CONTINUE
+
+C...Calculate boost from present frame to next JRF candidate.
+ IJRFIT=IJRFIT+1
+ CALL PYJURF(PBST,TJU)
+
+C...After some iterations do not take full step in new direction.
+ IF(IJRFIT.GT.5) THEN
+ REDUCE=0.8D0**(IJRFIT-5)
+ TJU(1)=REDUCE*TJU(1)
+ TJU(2)=REDUCE*TJU(2)
+ TJU(3)=REDUCE*TJU(3)
+ TJU(4)=SQRT(1D0+TJU(1)**2+TJU(2)**2+TJU(3)**2)
+ ENDIF
+
+C...Combine new boost (TJU) with old boost (TJUOLD)
+ TMP=TJU(1)*TJUOLD(1)+TJU(2)*TJUOLD(2)+TJU(3)*TJUOLD(3)
+ DO 290 IX=1,3
+ TJUOLD(IX)=TJU(IX)+TJUOLD(IX)*(TMP/(1D0+TJUOLD(4))+TJU(4))
+ 290 CONTINUE
+ TJUOLD(4)=SQRT(1D0+TJUOLD(1)**2+TJUOLD(2)**2+TJUOLD(3)**2)
+
+C...If last boost small, accept JRF, else iterate.
+C...Also prevent possibility of infinite loop.
+ IF (ABS((TJU(4)-1D0)/TJUOLD(4)).GT.0.01D0.AND.
+ & IJRFIT.LT.MSTJ(18)) THEN
+ GOTO 220
+ ELSEIF (IJRFIT.GE.MSTJ(18)) THEN
+ CALL PYERRM(1,'(PYSTRF:) failed to converge on JRF')
+ ENDIF
+
+C...Now store total boost in TJU and change perception.
+C...TJUOLD = boost vector from CM of string syst -> JRF. Henceforth,
+C...TJU = junction motion vector in string CM, so the sign changes.
+ DO 300 J=1,3
+ TJU(J)=-TJUOLD(J)
+ 300 CONTINUE
+ TJU(4)=SQRT(1D0+TJU(1)**2+TJU(2)**2+TJU(3)**2)
+
+C--SKANDS
+
+C...Calculate string piece energies in junction rest frame.
+ DO 310 IU=1,3
+ PJU(IU,5)=TJU(4)*PJU(IU,4)-TJU(1)*PJU(IU,1)-TJU(2)*PJU(IU,2)-
+ & TJU(3)*PJU(IU,3)
+ PBST(IU,5)=TJU(4)*PBST(IU,4)-TJU(1)*PBST(IU,1)-
+ & TJU(2)*PBST(IU,2)-TJU(3)*PBST(IU,3)
+ 310 CONTINUE
+
+C...Start preparing for fragmentation of two strings from junction.
+ ISTA=I
+ NTRYER=0
+ 320 NTRYER=NTRYER+1
+ I=ISTA
+ DO 620 IU=1,2
+ NS=IABS(IJU(IU+1)-IJU(IU))
+
+C...Junction strings: find longitudinal string directions.
+ DO 350 IS=1,NS
+ IS1=IJU(IU)+JS*(IS-1)
+ IS2=IJU(IU)+JS*IS
+ DO 330 J=1,5
+ DP(1,J)=0.5D0*P(IS1,J)
+ IF(IS.EQ.1) DP(1,J)=P(IS1,J)
+ DP(2,J)=0.5D0*P(IS2,J)
+ IF(IS.EQ.NS) DP(2,J)=(-PBST(IU,J)+2D0*PBST(IU,5)*TJU(J))*
+ & (PJU(IU,5)/PBST(IU,5))
+ 330 CONTINUE
+ IF(IS.EQ.NS) DP(2,5)=SQRT(MAX(0D0,PJU(IU,4)**2-
+ & PJU(IU,1)**2-PJU(IU,2)**2-PJU(IU,3)**2))
+ DP(3,5)=DFOUR(1,1)
+ DP(4,5)=DFOUR(2,2)
+ DHKC=DFOUR(1,2)
+ IF(DP(3,5)+2D0*DHKC+DP(4,5).LE.0D0) THEN
+ DP(1,4)=SQRT(DP(1,1)**2+DP(1,2)**2+DP(1,3)**2)
+ DP(2,4)=SQRT(DP(2,1)**2+DP(2,2)**2+DP(2,3)**2)
+ DP(3,5)=0D0
+ DP(4,5)=0D0
+ DHKC=DFOUR(1,2)
+ ENDIF
+ DHKS=SQRT(DHKC**2-DP(3,5)*DP(4,5))
+ DHK1=0.5D0*((DP(4,5)+DHKC)/DHKS-1D0)
+ DHK2=0.5D0*((DP(3,5)+DHKC)/DHKS-1D0)
+ IN1=N+NR+4*IS-3
+ P(IN1,5)=SQRT(DP(3,5)+2D0*DHKC+DP(4,5))
+ DO 340 J=1,4
+ P(IN1,J)=(1D0+DHK1)*DP(1,J)-DHK2*DP(2,J)
+ P(IN1+1,J)=(1D0+DHK2)*DP(2,J)-DHK1*DP(1,J)
+ 340 CONTINUE
+ 350 CONTINUE
+
+C...Junction strings: initialize flavour, momentum and starting pos.
+ ISAV=I
+ MSTU91=MSTU(90)
+ 360 NTRY=NTRY+1
+ IF(NTRY.GT.100.AND.NTRYR.LE.8.AND.NR.GT.NRMIN) THEN
+ PARU12=4D0*PARU12
+ PARU13=2D0*PARU13
+ GOTO 140
+ ELSEIF(NTRY.GT.100) THEN
+ CALL PYERRM(14,'(PYSTRF:) caught in infinite loop')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ I=ISAV
+ MSTU(90)=MSTU91
+ IRANKJ=0
+ IE(1)=K(N+1+(JT/2)*(NP-1),3)
+ IF (MOD(JT+IU,2).NE.0) THEN
+ IE(1)=K(IJU(IU),3)
+ IF (NP-NR.NE.0) THEN
+C...If gluons have disappeared. Original IJU must be used.
+ IT=IP
+ NE=1
+ 370 IT=IT+1
+ IF (K(IT,2).NE.21) THEN
+ NE=NE+1
+ ENDIF
+ IF (NE.EQ.IU+4*(JT-1)) THEN
+ IE(1)=IT
+ ELSEIF (IT.LE.IP+NP) THEN
+ GOTO 370
+ ELSE
+ CALL PYERRM(14,'(PYSTRF:) '//
+ & 'Original IJU could not be reconstructed!')
+ ENDIF
+ ENDIF
+ ENDIF
+ IN(4)=N+NR+1
+ IN(5)=IN(4)+1
+ IN(6)=N+NR+4*NS+1
+ DO 390 JQ=1,2
+ DO 380 IN1=N+NR+2+JQ,N+NR+4*NS-2+JQ,4
+ P(IN1,1)=2-JQ
+ P(IN1,2)=JQ-1
+ P(IN1,3)=1D0
+ 380 CONTINUE
+ 390 CONTINUE
+ KFL(1)=K(IJU(IU),2)
+ PX(1)=0D0
+ PY(1)=0D0
+ GAM(1)=0D0
+ DO 400 J=1,5
+ PJU(IU+3,J)=0D0
+ 400 CONTINUE
+
+C...Junction strings: find initial transverse directions.
+ DO 410 J=1,4
+ DP(1,J)=P(IN(4),J)
+ DP(2,J)=P(IN(4)+1,J)
+ DP(3,J)=0D0
+ DP(4,J)=0D0
+ 410 CONTINUE
+ DP(1,4)=SQRT(DP(1,1)**2+DP(1,2)**2+DP(1,3)**2)
+ DP(2,4)=SQRT(DP(2,1)**2+DP(2,2)**2+DP(2,3)**2)
+ DP(5,1)=DP(1,1)/DP(1,4)-DP(2,1)/DP(2,4)
+ DP(5,2)=DP(1,2)/DP(1,4)-DP(2,2)/DP(2,4)
+ DP(5,3)=DP(1,3)/DP(1,4)-DP(2,3)/DP(2,4)
+ IF(DP(5,1)**2.LE.DP(5,2)**2+DP(5,3)**2) DP(3,1)=1D0
+ IF(DP(5,1)**2.GT.DP(5,2)**2+DP(5,3)**2) DP(3,3)=1D0
+ IF(DP(5,2)**2.LE.DP(5,1)**2+DP(5,3)**2) DP(4,2)=1D0
+ IF(DP(5,2)**2.GT.DP(5,1)**2+DP(5,3)**2) DP(4,3)=1D0
+ DHC12=DFOUR(1,2)
+ DHCX1=DFOUR(3,1)/DHC12
+ DHCX2=DFOUR(3,2)/DHC12
+ DHCXX=1D0/SQRT(1D0+2D0*DHCX1*DHCX2*DHC12)
+ DHCY1=DFOUR(4,1)/DHC12
+ DHCY2=DFOUR(4,2)/DHC12
+ DHCYX=DHCXX*(DHCX1*DHCY2+DHCX2*DHCY1)*DHC12
+ DHCYY=1D0/SQRT(1D0+2D0*DHCY1*DHCY2*DHC12-DHCYX**2)
+ DO 420 J=1,4
+ DP(3,J)=DHCXX*(DP(3,J)-DHCX2*DP(1,J)-DHCX1*DP(2,J))
+ P(IN(6),J)=DP(3,J)
+ P(IN(6)+1,J)=DHCYY*(DP(4,J)-DHCY2*DP(1,J)-DHCY1*DP(2,J)-
+ & DHCYX*DP(3,J))
+ 420 CONTINUE
+
+C...Junction strings: produce new particle, origin.
+ 430 I=I+1
+ IF(2*I-NSAV.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYSTRF:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IRANKJ=IRANKJ+1
+ K(I,1)=1
+ K(I,3)=IE(1)
+ K(I,4)=0
+ K(I,5)=0
+
+C...Junction strings: generate flavour, hadron, pT, z and Gamma.
+ 440 CALL PYKFDI(KFL(1),0,KFL(3),K(I,2))
+ IF(K(I,2).EQ.0) GOTO 360
+ IF(IRANKJ.EQ.1.AND.IABS(KFL(1)).LE.10.AND.
+ & IABS(KFL(3)).GT.10) THEN
+ IF(PYR(0).GT.PARJ(19)) GOTO 440
+ ENDIF
+ P(I,5)=PYMASS(K(I,2))
+ CALL PYPTDI(KFL(1),PX(3),PY(3))
+ PR(1)=P(I,5)**2+(PX(1)+PX(3))**2+(PY(1)+PY(3))**2
+ CALL PYZDIS(KFL(1),KFL(3),PR(1),Z)
+ IF(IABS(KFL(1)).GE.4.AND.IABS(KFL(1)).LE.8.AND.
+ & MSTU(90).LT.8) THEN
+ MSTU(90)=MSTU(90)+1
+ MSTU(90+MSTU(90))=I
+ PARU(90+MSTU(90))=Z
+ ENDIF
+ GAM(3)=(1D0-Z)*(GAM(1)+PR(1)/Z)
+ DO 450 J=1,3
+ IN(J)=IN(3+J)
+ 450 CONTINUE
+
+C...Junction strings: stepping within 'low' string region.
+ IF(IN(1)+1.EQ.IN(2).AND.Z*P(IN(1)+2,3)*P(IN(2)+2,3)*
+ & P(IN(1),5)**2.GE.PR(1)) THEN
+ P(IN(1)+2,4)=Z*P(IN(1)+2,3)
+ P(IN(2)+2,4)=PR(1)/(P(IN(1)+2,4)*P(IN(1),5)**2)
+ DO 460 J=1,4
+ P(I,J)=(PX(1)+PX(3))*P(IN(3),J)+(PY(1)+PY(3))*P(IN(3)+1,J)
+ 460 CONTINUE
+ GOTO 560
+C...Has used up energy of junction string, i.e. no more hadrons in it.
+ ELSEIF(IN(1)+1.EQ.IN(2).AND.IN(1).EQ.N+NR+4*NS-3) THEN
+ DO 470 J=1,5
+ P(I,J)=0D0
+ 470 CONTINUE
+ GOTO 600
+C...Stepping from 'low' string region
+ ELSEIF(IN(1)+1.EQ.IN(2)) THEN
+ P(IN(2)+2,4)=P(IN(2)+2,3)
+ P(IN(2)+2,1)=1D0
+ IN(2)=IN(2)+4
+ IF(IN(2).GT.N+NR+4*NS) GOTO 360
+ IF(FOUR(IN(1),IN(2)).LE.1D-2) THEN
+ P(IN(1)+2,4)=P(IN(1)+2,3)
+ P(IN(1)+2,1)=0D0
+ IN(1)=IN(1)+4
+ ENDIF
+ ENDIF
+
+C...Junction strings: find new transverse directions.
+ 480 IF(IN(1).GT.N+NR+4*NS.OR.IN(2).GT.N+NR+4*NS.OR.
+ & IN(1).GT.IN(2)) GOTO 360
+ IF(IN(1).NE.IN(4).OR.IN(2).NE.IN(5)) THEN
+ DO 490 J=1,4
+ DP(1,J)=P(IN(1),J)
+ DP(2,J)=P(IN(2),J)
+ DP(3,J)=0D0
+ DP(4,J)=0D0
+ 490 CONTINUE
+ DP(1,4)=SQRT(DP(1,1)**2+DP(1,2)**2+DP(1,3)**2)
+ DP(2,4)=SQRT(DP(2,1)**2+DP(2,2)**2+DP(2,3)**2)
+ DHC12=DFOUR(1,2)
+ IF(DHC12.LE.1D-2) THEN
+ P(IN(1)+2,4)=P(IN(1)+2,3)
+ P(IN(1)+2,1)=0D0
+ IN(1)=IN(1)+4
+ GOTO 480
+ ENDIF
+ IN(3)=N+NR+4*NS+5
+ DP(5,1)=DP(1,1)/DP(1,4)-DP(2,1)/DP(2,4)
+ DP(5,2)=DP(1,2)/DP(1,4)-DP(2,2)/DP(2,4)
+ DP(5,3)=DP(1,3)/DP(1,4)-DP(2,3)/DP(2,4)
+ IF(DP(5,1)**2.LE.DP(5,2)**2+DP(5,3)**2) DP(3,1)=1D0
+ IF(DP(5,1)**2.GT.DP(5,2)**2+DP(5,3)**2) DP(3,3)=1D0
+ IF(DP(5,2)**2.LE.DP(5,1)**2+DP(5,3)**2) DP(4,2)=1D0
+ IF(DP(5,2)**2.GT.DP(5,1)**2+DP(5,3)**2) DP(4,3)=1D0
+ DHCX1=DFOUR(3,1)/DHC12
+ DHCX2=DFOUR(3,2)/DHC12
+ DHCXX=1D0/SQRT(1D0+2D0*DHCX1*DHCX2*DHC12)
+ DHCY1=DFOUR(4,1)/DHC12
+ DHCY2=DFOUR(4,2)/DHC12
+ DHCYX=DHCXX*(DHCX1*DHCY2+DHCX2*DHCY1)*DHC12
+ DHCYY=1D0/SQRT(1D0+2D0*DHCY1*DHCY2*DHC12-DHCYX**2)
+ DO 500 J=1,4
+ DP(3,J)=DHCXX*(DP(3,J)-DHCX2*DP(1,J)-DHCX1*DP(2,J))
+ P(IN(3),J)=DP(3,J)
+ P(IN(3)+1,J)=DHCYY*(DP(4,J)-DHCY2*DP(1,J)-DHCY1*DP(2,J)-
+ & DHCYX*DP(3,J))
+ 500 CONTINUE
+C...Express pT with respect to new axes, if sensible.
+ PXP=-(PX(3)*FOUR(IN(6),IN(3))+PY(3)*FOUR(IN(6)+1,IN(3)))
+ PYP=-(PX(3)*FOUR(IN(6),IN(3)+1)+PY(3)*FOUR(IN(6)+1,IN(3)+1))
+ IF(ABS(PXP**2+PYP**2-PX(3)**2-PY(3)**2).LT.0.01D0) THEN
+ PX(3)=PXP
+ PY(3)=PYP
+ ENDIF
+ ENDIF
+
+C...Junction strings: sum up known four-momentum, coefficients for m2.
+ DO 530 J=1,4
+ DHG(J)=0D0
+ P(I,J)=PX(1)*P(IN(6),J)+PY(1)*P(IN(6)+1,J)+PX(3)*P(IN(3),J)+
+ & PY(3)*P(IN(3)+1,J)
+ DO 510 IN1=IN(4),IN(1)-4,4
+ P(I,J)=P(I,J)+P(IN1+2,3)*P(IN1,J)
+ 510 CONTINUE
+ DO 520 IN2=IN(5),IN(2)-4,4
+ P(I,J)=P(I,J)+P(IN2+2,3)*P(IN2,J)
+ 520 CONTINUE
+ 530 CONTINUE
+ DHM(1)=FOUR(I,I)
+ DHM(2)=2D0*FOUR(I,IN(1))
+ DHM(3)=2D0*FOUR(I,IN(2))
+ DHM(4)=2D0*FOUR(IN(1),IN(2))
+
+C...Junction strings: find coefficients for Gamma expression.
+ DO 550 IN2=IN(1)+1,IN(2),4
+ DO 540 IN1=IN(1),IN2-1,4
+ DHC=2D0*FOUR(IN1,IN2)
+ DHG(1)=DHG(1)+P(IN1+2,1)*P(IN2+2,1)*DHC
+ IF(IN1.EQ.IN(1)) DHG(2)=DHG(2)-P(IN2+2,1)*DHC
+ IF(IN2.EQ.IN(2)) DHG(3)=DHG(3)+P(IN1+2,1)*DHC
+ IF(IN1.EQ.IN(1).AND.IN2.EQ.IN(2)) DHG(4)=DHG(4)-DHC
+ 540 CONTINUE
+ 550 CONTINUE
+
+C...Junction strings: solve (m2, Gamma) equation system for energies.
+ DHS1=DHM(3)*DHG(4)-DHM(4)*DHG(3)
+ IF(ABS(DHS1).LT.1D-4) GOTO 360
+ DHS2=DHM(4)*(GAM(3)-DHG(1))-DHM(2)*DHG(3)-DHG(4)*
+ & (P(I,5)**2-DHM(1))+DHG(2)*DHM(3)
+ DHS3=DHM(2)*(GAM(3)-DHG(1))-DHG(2)*(P(I,5)**2-DHM(1))
+ P(IN(2)+2,4)=0.5D0*(SQRT(MAX(0D0,DHS2**2-4D0*DHS1*DHS3))/
+ & ABS(DHS1)-DHS2/DHS1)
+ IF(DHM(2)+DHM(4)*P(IN(2)+2,4).LE.0D0) GOTO 360
+ P(IN(1)+2,4)=(P(I,5)**2-DHM(1)-DHM(3)*P(IN(2)+2,4))/
+ & (DHM(2)+DHM(4)*P(IN(2)+2,4))
+
+C...Junction strings: step to new region if necessary.
+ IF(P(IN(2)+2,4).GT.P(IN(2)+2,3)) THEN
+ P(IN(2)+2,4)=P(IN(2)+2,3)
+ P(IN(2)+2,1)=1D0
+ IN(2)=IN(2)+4
+ IF(IN(2).GT.N+NR+4*NS) GOTO 360
+ IF(FOUR(IN(1),IN(2)).LE.1D-2) THEN
+ P(IN(1)+2,4)=P(IN(1)+2,3)
+ P(IN(1)+2,1)=0D0
+ IN(1)=IN(1)+4
+ ENDIF
+ GOTO 480
+ ELSEIF(P(IN(1)+2,4).GT.P(IN(1)+2,3)) THEN
+ P(IN(1)+2,4)=P(IN(1)+2,3)
+ P(IN(1)+2,1)=0D0
+ IN(1)=IN(1)+4
+ GOTO 480
+ ENDIF
+
+C...Junction strings: particle four-momentum, remainder, loop back.
+ 560 DO 570 J=1,4
+ P(I,J)=P(I,J)+P(IN(1)+2,4)*P(IN(1),J)+
+ & P(IN(2)+2,4)*P(IN(2),J)
+ PJU(IU+3,J)=PJU(IU+3,J)+P(I,J)
+ 570 CONTINUE
+ IF(P(I,4).LT.P(I,5)) GOTO 360
+ PJU(IU+3,5)=TJU(4)*PJU(IU+3,4)-TJU(1)*PJU(IU+3,1)-
+ & TJU(2)*PJU(IU+3,2)-TJU(3)*PJU(IU+3,3)
+ IF(PJU(IU+3,5).LT.PJU(IU,5)) THEN
+ KFL(1)=-KFL(3)
+ PX(1)=-PX(3)
+ PY(1)=-PY(3)
+ GAM(1)=GAM(3)
+ IF(IN(3).NE.IN(6)) THEN
+ DO 580 J=1,4
+ P(IN(6),J)=P(IN(3),J)
+ P(IN(6)+1,J)=P(IN(3)+1,J)
+ 580 CONTINUE
+ ENDIF
+ DO 590 JQ=1,2
+ IN(3+JQ)=IN(JQ)
+ P(IN(JQ)+2,3)=P(IN(JQ)+2,3)-P(IN(JQ)+2,4)
+ P(IN(JQ)+2,1)=P(IN(JQ)+2,1)-(3-2*JQ)*P(IN(JQ)+2,4)
+ 590 CONTINUE
+ GOTO 430
+ ENDIF
+
+C...Junction strings: save quantities left after each string.
+ IF(IABS(KFL(1)).GT.10) GOTO 360
+ 600 I=I-1
+ KFJH(IU)=KFL(1)
+ DO 610 J=1,4
+ PJU(IU+3,J)=PJU(IU+3,J)-P(I+1,J)
+ 610 CONTINUE
+
+C...Junction strings: loopback if much unused energy in both strings.
+ PJU(IU+3,5)=TJU(4)*PJU(IU+3,4)-TJU(1)*PJU(IU+3,1)-
+ & TJU(2)*PJU(IU+3,2)-TJU(3)*PJU(IU+3,3)
+ EJSTR(IU)=PJU(IU,5)-PJU(IU+3,5)
+ 620 CONTINUE
+ IF((MIN(EJSTR(1),EJSTR(2)).GT.PARJ(49).OR.
+ & EJSTR(1).GT.PARJ(49)+PYR(0)*PARJ(50).OR.
+ & EJSTR(2).GT.PARJ(49)+PYR(0)*PARJ(50))
+ & .AND.NTRYER.LT.10) GOTO 320
+
+C...Junction strings: put together to new effective string endpoint.
+ NJS(JT)=I-ISTA
+ KFLS=2*INT(PYR(0)+3D0*PARJ(4)/(1D0+3D0*PARJ(4)))+1
+ IF(KFJH(1).EQ.KFJH(2)) KFLS=3
+ KFJS(JT)=ISIGN(1000*MAX(IABS(KFJH(1)),IABS(KFJH(2)))+
+ & 100*MIN(IABS(KFJH(1)),IABS(KFJH(2)))+KFLS,KFJH(1))
+ DO 630 J=1,4
+ PJS(JT,J)=PJU(1,J)+PJU(2,J)+P(MJU(JT),J)
+ PJS(JT+2,J)=PJU(4,J)+PJU(5,J)
+ 630 CONTINUE
+ PJS(JT,5)=SQRT(MAX(0D0,PJS(JT,4)**2-PJS(JT,1)**2-PJS(JT,2)**2-
+ & PJS(JT,3)**2))
+ PJS(JT+2,5)=0D0
+ 640 CONTINUE
+
+C...Open versus closed strings. Choose breakup region for latter.
+ 650 IF(MJU(1).NE.0.AND.MJU(2).NE.0) THEN
+ NS=MJU(2)-MJU(1)
+ NB=MJU(1)-N
+ ELSEIF(MJU(1).NE.0) THEN
+ NS=N+NR-MJU(1)
+ NB=MJU(1)-N
+ ELSEIF(MJU(2).NE.0) THEN
+ NS=MJU(2)-N
+ NB=1
+ ELSEIF(IABS(K(N+1,2)).NE.21) THEN
+ NS=NR-1
+ NB=1
+ ELSE
+ NS=NR+1
+ W2SUM=0D0
+ DO 660 IS=1,NR
+ P(N+NR+IS,1)=0.5D0*FOUR(N+IS,N+IS+1-NR*(IS/NR))
+ W2SUM=W2SUM+P(N+NR+IS,1)
+ 660 CONTINUE
+ W2RAN=PYR(0)*W2SUM
+ NB=0
+ 670 NB=NB+1
+ W2SUM=W2SUM-P(N+NR+NB,1)
+ IF(W2SUM.GT.W2RAN.AND.NB.LT.NR) GOTO 670
+ ENDIF
+
+C...Find longitudinal string directions (i.e. lightlike four-vectors).
+ DO 700 IS=1,NS
+ IS1=N+IS+NB-1-NR*((IS+NB-2)/NR)
+ IS2=N+IS+NB-NR*((IS+NB-1)/NR)
+ DO 680 J=1,5
+ DP(1,J)=P(IS1,J)
+ IF(IABS(K(IS1,2)).EQ.21) DP(1,J)=0.5D0*DP(1,J)
+ IF(IS1.EQ.MJU(1)) DP(1,J)=PJS(1,J)-PJS(3,J)
+ DP(2,J)=P(IS2,J)
+ IF(IABS(K(IS2,2)).EQ.21) DP(2,J)=0.5D0*DP(2,J)
+ IF(IS2.EQ.MJU(2)) DP(2,J)=PJS(2,J)-PJS(4,J)
+ 680 CONTINUE
+ IF(IS1.EQ.MJU(1)) DP(1,5)=SQRT(MAX(0D0,DP(1,4)**2-DP(1,1)**2-
+ & DP(1,2)**2-DP(1,3)**2))
+ IF(IS2.EQ.MJU(2)) DP(2,5)=SQRT(MAX(0D0,DP(2,4)**2-DP(2,1)**2-
+ & DP(2,2)**2-DP(2,3)**2))
+ DP(3,5)=DFOUR(1,1)
+ DP(4,5)=DFOUR(2,2)
+ DHKC=DFOUR(1,2)
+ IF(DP(3,5)+2D0*DHKC+DP(4,5).LE.0D0) GOTO 200
+ DHKS=SQRT(DHKC**2-DP(3,5)*DP(4,5))
+ DHK1=0.5D0*((DP(4,5)+DHKC)/DHKS-1D0)
+ DHK2=0.5D0*((DP(3,5)+DHKC)/DHKS-1D0)
+ IN1=N+NR+4*IS-3
+ P(IN1,5)=SQRT(DP(3,5)+2D0*DHKC+DP(4,5))
+ DO 690 J=1,4
+ P(IN1,J)=(1D0+DHK1)*DP(1,J)-DHK2*DP(2,J)
+ P(IN1+1,J)=(1D0+DHK2)*DP(2,J)-DHK1*DP(1,J)
+ 690 CONTINUE
+ 700 CONTINUE
+
+C...Begin initialization: sum up energy, set starting position.
+ ISAV=I
+ MSTU91=MSTU(90)
+ 710 NTRY=NTRY+1
+ IF(NTRY.GT.100.AND.NTRYR.LE.8.AND.NR.GT.NRMIN) THEN
+ PARU12=4D0*PARU12
+ PARU13=2D0*PARU13
+ GOTO 140
+ ELSEIF(NTRY.GT.100) THEN
+ CALL PYERRM(14,'(PYSTRF:) caught in infinite loop')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ I=ISAV
+ MSTU(90)=MSTU91
+ DO 730 J=1,4
+ P(N+NRS,J)=0D0
+ DO 720 IS=1,NR
+ P(N+NRS,J)=P(N+NRS,J)+P(N+IS,J)
+ 720 CONTINUE
+ 730 CONTINUE
+ DO 750 JT=1,2
+ IRANK(JT)=0
+ IF(MJU(JT).NE.0) IRANK(JT)=NJS(JT)
+ IF(NS.GT.NR) IRANK(JT)=1
+ IBARRK(JT)=0
+ IE(JT)=K(N+1+(JT/2)*(NP-1),3)
+ IN(3*JT+1)=N+NR+1+4*(JT/2)*(NS-1)
+ IN(3*JT+2)=IN(3*JT+1)+1
+ IN(3*JT+3)=N+NR+4*NS+2*JT-1
+ DO 740 IN1=N+NR+2+JT,N+NR+4*NS-2+JT,4
+ P(IN1,1)=2-JT
+ P(IN1,2)=JT-1
+ P(IN1,3)=1D0
+ 740 CONTINUE
+ 750 CONTINUE
+
+C.. MOPS variables and switches
+ NRVMO=0
+ XBMO=1D0
+ MSTU(121)=0
+ MSTU(122)=0
+
+C...Initialize flavour and pT variables for open string.
+ IF(NS.LT.NR) THEN
+ PX(1)=0D0
+ PY(1)=0D0
+ IF(NS.EQ.1.AND.MJU(1)+MJU(2).EQ.0) CALL PYPTDI(0,PX(1),PY(1))
+ PX(2)=-PX(1)
+ PY(2)=-PY(1)
+ DO 760 JT=1,2
+ KFL(JT)=K(IE(JT),2)
+ IF(MJU(JT).NE.0) KFL(JT)=KFJS(JT)
+ IF(MJU(JT).NE.0.AND.IABS(KFL(JT)).GT.1000) IBARRK(JT)=1
+ MSTJ(93)=1
+ PMQ(JT)=PYMASS(KFL(JT))
+ GAM(JT)=0D0
+ 760 CONTINUE
+
+C...Closed string: random initial breakup flavour, pT and vertex.
+ ELSE
+ KFL(3)=INT(1D0+(2D0+PARJ(2))*PYR(0))*(-1)**INT(PYR(0)+0.5D0)
+ IBMO=0
+ 770 CALL PYKFDI(KFL(3),0,KFL(1),KDUMP)
+C.. Closed string: first vertex diq attempt => enforced second
+C.. vertex diq
+ IF(IABS(KFL(1)).GT.10)THEN
+ IBMO=1
+ MSTU(121)=0
+ GOTO 770
+ ENDIF
+ IF(IBMO.EQ.1) MSTU(121)=-1
+ KFL(2)=-KFL(1)
+ CALL PYPTDI(KFL(1),PX(1),PY(1))
+ PX(2)=-PX(1)
+ PY(2)=-PY(1)
+ PR3=MIN(25D0,0.1D0*P(N+NR+1,5)**2)
+ 780 CALL PYZDIS(KFL(1),KFL(2),PR3,Z)
+ ZR=PR3/(Z*P(N+NR+1,5)**2)
+ IF(ZR.GE.1D0) GOTO 780
+ DO 790 JT=1,2
+ MSTJ(93)=1
+ PMQ(JT)=PYMASS(KFL(JT))
+ GAM(JT)=PR3*(1D0-Z)/Z
+ IN1=N+NR+3+4*(JT/2)*(NS-1)
+ P(IN1,JT)=1D0-Z
+ P(IN1,3-JT)=JT-1
+ P(IN1,3)=(2-JT)*(1D0-Z)+(JT-1)*Z
+ P(IN1+1,JT)=ZR
+ P(IN1+1,3-JT)=2-JT
+ P(IN1+1,3)=(2-JT)*(1D0-ZR)+(JT-1)*ZR
+ 790 CONTINUE
+ ENDIF
+C.. MOPS variables
+ DO 800 JT=1,2
+ XTMO(JT)=1D0
+ PM2QMO(JT)=PMQ(JT)**2
+ IF(IABS(KFL(JT)).GT.10) PM2QMO(JT)=0D0
+ 800 CONTINUE
+
+C...Find initial transverse directions (i.e. spacelike four-vectors).
+ DO 840 JT=1,2
+ IF(JT.EQ.1.OR.NS.EQ.NR-1.OR.MJU(1)+MJU(2).NE.0) THEN
+ IN1=IN(3*JT+1)
+ IN3=IN(3*JT+3)
+ DO 810 J=1,4
+ DP(1,J)=P(IN1,J)
+ DP(2,J)=P(IN1+1,J)
+ DP(3,J)=0D0
+ DP(4,J)=0D0
+ 810 CONTINUE
+ DP(1,4)=SQRT(DP(1,1)**2+DP(1,2)**2+DP(1,3)**2)
+ DP(2,4)=SQRT(DP(2,1)**2+DP(2,2)**2+DP(2,3)**2)
+ DP(5,1)=DP(1,1)/DP(1,4)-DP(2,1)/DP(2,4)
+ DP(5,2)=DP(1,2)/DP(1,4)-DP(2,2)/DP(2,4)
+ DP(5,3)=DP(1,3)/DP(1,4)-DP(2,3)/DP(2,4)
+ IF(DP(5,1)**2.LE.DP(5,2)**2+DP(5,3)**2) DP(3,1)=1D0
+ IF(DP(5,1)**2.GT.DP(5,2)**2+DP(5,3)**2) DP(3,3)=1D0
+ IF(DP(5,2)**2.LE.DP(5,1)**2+DP(5,3)**2) DP(4,2)=1D0
+ IF(DP(5,2)**2.GT.DP(5,1)**2+DP(5,3)**2) DP(4,3)=1D0
+ DHC12=DFOUR(1,2)
+ DHCX1=DFOUR(3,1)/DHC12
+ DHCX2=DFOUR(3,2)/DHC12
+ DHCXX=1D0/SQRT(1D0+2D0*DHCX1*DHCX2*DHC12)
+ DHCY1=DFOUR(4,1)/DHC12
+ DHCY2=DFOUR(4,2)/DHC12
+ DHCYX=DHCXX*(DHCX1*DHCY2+DHCX2*DHCY1)*DHC12
+ DHCYY=1D0/SQRT(1D0+2D0*DHCY1*DHCY2*DHC12-DHCYX**2)
+ DO 820 J=1,4
+ DP(3,J)=DHCXX*(DP(3,J)-DHCX2*DP(1,J)-DHCX1*DP(2,J))
+ P(IN3,J)=DP(3,J)
+ P(IN3+1,J)=DHCYY*(DP(4,J)-DHCY2*DP(1,J)-DHCY1*DP(2,J)-
+ & DHCYX*DP(3,J))
+ 820 CONTINUE
+ ELSE
+ DO 830 J=1,4
+ P(IN3+2,J)=P(IN3,J)
+ P(IN3+3,J)=P(IN3+1,J)
+ 830 CONTINUE
+ ENDIF
+ 840 CONTINUE
+
+C...Remove energy used up in junction string fragmentation.
+ IF(MJU(1)+MJU(2).GT.0) THEN
+ DO 860 JT=1,2
+ IF(NJS(JT).EQ.0) GOTO 860
+ DO 850 J=1,4
+ P(N+NRS,J)=P(N+NRS,J)-PJS(JT+2,J)
+ 850 CONTINUE
+ 860 CONTINUE
+ PARJST=PARJ(33)
+ IF(MSTJ(11).EQ.2) PARJST=PARJ(34)
+ WMIN=PARJST+PMQ(1)+PMQ(2)
+ WREM2=FOUR(N+NRS,N+NRS)
+ IF(P(N+NRS,4).LT.0D0.OR.WREM2.LT.WMIN**2) THEN
+ NTRYWR=NTRYWR+1
+ IF(MOD(NTRYWR,20).NE.0) NTRYR=NTRYR-1
+ GOTO 140
+ ENDIF
+ ENDIF
+
+C...Produce new particle: side, origin.
+ 870 I=I+1
+ IF(2*I-NSAV.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYSTRF:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+C.. New side priority for popcorn systems
+ IF(MSTU(121).LE.0)THEN
+ JT=1.5D0+PYR(0)
+ IF(IABS(KFL(3-JT)).GT.10) JT=3-JT
+ IF(IABS(KFL(3-JT)).GE.4.AND.IABS(KFL(3-JT)).LE.8) JT=3-JT
+ ENDIF
+ JR=3-JT
+ JS=3-2*JT
+ IRANK(JT)=IRANK(JT)+1
+ K(I,1)=1
+ K(I,4)=0
+ K(I,5)=0
+
+C...Generate flavour, hadron and pT.
+ 880 K(I,3)=IE(JT)
+ CALL PYKFDI(KFL(JT),0,KFL(3),K(I,2))
+ IF(K(I,2).EQ.0) GOTO 710
+ MU90MO=MSTU(90)
+ IF(MSTU(121).EQ.-1) GOTO 910
+ IF(IRANK(JT).EQ.1.AND.IABS(KFL(JT)).LE.10.AND.
+ &IABS(KFL(3)).GT.10) THEN
+ IF(PYR(0).GT.PARJ(19)) GOTO 880
+ ENDIF
+ IF(IBARRK(JT).EQ.1.AND.MOD(IABS(K(I,2)),10000).GT.1000)
+ &K(I,3)=IJUORI(JT)
+ P(I,5)=PYMASS(K(I,2))
+ CALL PYPTDI(KFL(JT),PX(3),PY(3))
+ PR(JT)=P(I,5)**2+(PX(JT)+PX(3))**2+(PY(JT)+PY(3))**2
+
+C...Final hadrons for small invariant mass.
+ MSTJ(93)=1
+ PMQ(3)=PYMASS(KFL(3))
+ PARJST=PARJ(33)
+ IF(MSTJ(11).EQ.2) PARJST=PARJ(34)
+ WMIN=PARJST+PMQ(1)+PMQ(2)+PARJ(36)*PMQ(3)
+ IF(IABS(KFL(JT)).GT.10.AND.IABS(KFL(3)).GT.10) WMIN=
+ &WMIN-0.5D0*PARJ(36)*PMQ(3)
+ WREM2=FOUR(N+NRS,N+NRS)
+ IF(WREM2.LT.0.10D0) GOTO 710
+ IF(WREM2.LT.MAX(WMIN*(1D0+(2D0*PYR(0)-1D0)*PARJ(37)),
+ &PARJ(32)+PMQ(1)+PMQ(2))**2) GOTO 1080
+
+C...Choose z, which gives Gamma. Shift z for heavy flavours.
+ CALL PYZDIS(KFL(JT),KFL(3),PR(JT),Z)
+ IF(IABS(KFL(JT)).GE.4.AND.IABS(KFL(JT)).LE.8.AND.
+ &MSTU(90).LT.8) THEN
+ MSTU(90)=MSTU(90)+1
+ MSTU(90+MSTU(90))=I
+ PARU(90+MSTU(90))=Z
+ ENDIF
+ KFL1A=IABS(KFL(1))
+ KFL2A=IABS(KFL(2))
+ IF(MAX(MOD(KFL1A,10),MOD(KFL1A/1000,10),MOD(KFL2A,10),
+ &MOD(KFL2A/1000,10)).GE.4) THEN
+ PR(JR)=(PMQ(JR)+PMQ(3))**2+(PX(JR)-PX(3))**2+(PY(JR)-PY(3))**2
+ PW12=SQRT(MAX(0D0,(WREM2-PR(1)-PR(2))**2-4D0*PR(1)*PR(2)))
+ Z=(WREM2+PR(JT)-PR(JR)+PW12*(2D0*Z-1D0))/(2D0*WREM2)
+ PR(JR)=(PMQ(JR)+PARJST)**2+(PX(JR)-PX(3))**2+(PY(JR)-PY(3))**2
+ IF((1D0-Z)*(WREM2-PR(JT)/Z).LT.PR(JR)) GOTO 1080
+ ENDIF
+ GAM(3)=(1D0-Z)*(GAM(JT)+PR(JT)/Z)
+
+C.. MOPS baryon model modification
+ XTMO3=(1D0-Z)*XTMO(JT)
+ IF(IABS(KFL(3)).LE.10) NRVMO=0
+ IF(IABS(KFL(3)).GT.10.AND.MSTJ(12).GE.4) THEN
+ GTSTMO=1D0
+ PTSTMO=1D0
+ RTSTMO=PYR(0)
+ IF(IABS(KFL(JT)).LE.10)THEN
+ XBMO=MIN(XTMO3,1D0-(2D-10))
+ GBMO=GAM(3)
+ PMMO=0D0
+ PGMO=GBMO+LOG(1D0-XBMO)*PM2QMO(JT)
+ GTSTMO=1D0-PARF(192)**PGMO
+ ELSE
+ IF(IRANK(JT).EQ.1) THEN
+ GBMO=GAM(JT)
+ PMMO=0D0
+ XBMO=1D0
+ ENDIF
+ IF(XBMO.LT.1D0-(1D-10))THEN
+ PGNMO=GBMO*XTMO3/XBMO+PM2QMO(JT)*LOG(1D0-XTMO3)
+ GTSTMO=(1D0-PARF(192)**PGNMO)/(1D0-PARF(192)**PGMO)
+ PGMO=PGNMO
+ ENDIF
+ IF(MSTJ(12).GE.5)THEN
+ PMNMO=SQRT((XBMO-XTMO3)*(GAM(3)/XTMO3-GBMO/XBMO))
+ PMMO=PMMO+PMAS(PYCOMP(K(I,2)),1)-PMAS(PYCOMP(K(I,2)),3)
+ PTSTMO=EXP((PMMO-PMNMO)*PARF(193))
+ PMMO=PMNMO
+ ENDIF
+ ENDIF
+
+C.. MOPS Accepting popcorn system hadron.
+ IF(PTSTMO*GTSTMO.GT.RTSTMO) THEN
+ IF(IRANK(JT).EQ.1.OR.IABS(KFL(JT)).LE.10) THEN
+ NRVMO=I-N-NR
+ IF(I+NRVMO.GT.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,
+ & '(PYSTRF:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IMO=I
+ KFLMO=KFL(JT)
+ PMQMO=PMQ(JT)
+ PXMO=PX(JT)
+ PYMO=PY(JT)
+ GAMMO=GAM(JT)
+ IRMO=IRANK(JT)
+ XMO=XTMO(JT)
+ DO 900 J=1,9
+ IF(J.LE.5) THEN
+ DO 890 LINE=1,I-N-NR
+ P(MSTU(4)-MSTU(32)-LINE,J)=P(N+NR+LINE,J)
+ K(MSTU(4)-MSTU(32)-LINE,J)=K(N+NR+LINE,J)
+ 890 CONTINUE
+ ENDIF
+ INMO(J)=IN(J)
+ 900 CONTINUE
+ ENDIF
+ ELSE
+C..Reject popcorn system, flag=-1 if enforcing new one
+ MSTU(121)=-1
+ IF(PTSTMO.GT.RTSTMO) MSTU(121)=-2
+ ENDIF
+ ENDIF
+
+
+C..Lift restoring string outside MOPS block
+ 910 IF(MSTU(121).LT.0) THEN
+ IF(MSTU(121).EQ.-2) MSTU(121)=0
+ MSTU(90)=MU90MO
+ NRVMO=0
+ IF(IRANK(JT).EQ.1.OR.IABS(KFL(JT)).LE.10) GOTO 880
+ I=IMO
+ KFL(JT)=KFLMO
+ PMQ(JT)=PMQMO
+ PX(JT)=PXMO
+ PY(JT)=PYMO
+ GAM(JT)=GAMMO
+ IRANK(JT)=IRMO
+ XTMO(JT)=XMO
+ DO 930 J=1,9
+ IF(J.LE.5) THEN
+ DO 920 LINE=1,I-N-NR
+ P(N+NR+LINE,J)=P(MSTU(4)-MSTU(32)-LINE,J)
+ K(N+NR+LINE,J)=K(MSTU(4)-MSTU(32)-LINE,J)
+ 920 CONTINUE
+ ENDIF
+ IN(J)=INMO(J)
+ 930 CONTINUE
+ GOTO 880
+ ENDIF
+ XTMO(JT)=XTMO3
+C.. MOPS end of modification
+
+ DO 940 J=1,3
+ IN(J)=IN(3*JT+J)
+ 940 CONTINUE
+
+C...Stepping within or from 'low' string region easy.
+ IF(IN(1)+1.EQ.IN(2).AND.Z*P(IN(1)+2,3)*P(IN(2)+2,3)*
+ &P(IN(1),5)**2.GE.PR(JT)) THEN
+ P(IN(JT)+2,4)=Z*P(IN(JT)+2,3)
+ P(IN(JR)+2,4)=PR(JT)/(P(IN(JT)+2,4)*P(IN(1),5)**2)
+ DO 950 J=1,4
+ P(I,J)=(PX(JT)+PX(3))*P(IN(3),J)+(PY(JT)+PY(3))*P(IN(3)+1,J)
+ 950 CONTINUE
+ GOTO 1040
+ ELSEIF(IN(1)+1.EQ.IN(2)) THEN
+ P(IN(JR)+2,4)=P(IN(JR)+2,3)
+ P(IN(JR)+2,JT)=1D0
+ IN(JR)=IN(JR)+4*JS
+ IF(JS*IN(JR).GT.JS*IN(4*JR)) GOTO 710
+ IF(FOUR(IN(1),IN(2)).LE.1D-2) THEN
+ P(IN(JT)+2,4)=P(IN(JT)+2,3)
+ P(IN(JT)+2,JT)=0D0
+ IN(JT)=IN(JT)+4*JS
+ ENDIF
+ ENDIF
+
+C...Find new transverse directions (i.e. spacelike string vectors).
+ 960 IF(JS*IN(1).GT.JS*IN(3*JR+1).OR.JS*IN(2).GT.JS*IN(3*JR+2).OR.
+ &IN(1).GT.IN(2)) GOTO 710
+ IF(IN(1).NE.IN(3*JT+1).OR.IN(2).NE.IN(3*JT+2)) THEN
+ DO 970 J=1,4
+ DP(1,J)=P(IN(1),J)
+ DP(2,J)=P(IN(2),J)
+ DP(3,J)=0D0
+ DP(4,J)=0D0
+ 970 CONTINUE
+ DP(1,4)=SQRT(DP(1,1)**2+DP(1,2)**2+DP(1,3)**2)
+ DP(2,4)=SQRT(DP(2,1)**2+DP(2,2)**2+DP(2,3)**2)
+ DHC12=DFOUR(1,2)
+ IF(DHC12.LE.1D-2) THEN
+ P(IN(JT)+2,4)=P(IN(JT)+2,3)
+ P(IN(JT)+2,JT)=0D0
+ IN(JT)=IN(JT)+4*JS
+ GOTO 960
+ ENDIF
+ IN(3)=N+NR+4*NS+5
+ DP(5,1)=DP(1,1)/DP(1,4)-DP(2,1)/DP(2,4)
+ DP(5,2)=DP(1,2)/DP(1,4)-DP(2,2)/DP(2,4)
+ DP(5,3)=DP(1,3)/DP(1,4)-DP(2,3)/DP(2,4)
+ IF(DP(5,1)**2.LE.DP(5,2)**2+DP(5,3)**2) DP(3,1)=1D0
+ IF(DP(5,1)**2.GT.DP(5,2)**2+DP(5,3)**2) DP(3,3)=1D0
+ IF(DP(5,2)**2.LE.DP(5,1)**2+DP(5,3)**2) DP(4,2)=1D0
+ IF(DP(5,2)**2.GT.DP(5,1)**2+DP(5,3)**2) DP(4,3)=1D0
+ DHCX1=DFOUR(3,1)/DHC12
+ DHCX2=DFOUR(3,2)/DHC12
+ DHCXX=1D0/SQRT(1D0+2D0*DHCX1*DHCX2*DHC12)
+ DHCY1=DFOUR(4,1)/DHC12
+ DHCY2=DFOUR(4,2)/DHC12
+ DHCYX=DHCXX*(DHCX1*DHCY2+DHCX2*DHCY1)*DHC12
+ DHCYY=1D0/SQRT(1D0+2D0*DHCY1*DHCY2*DHC12-DHCYX**2)
+ DO 980 J=1,4
+ DP(3,J)=DHCXX*(DP(3,J)-DHCX2*DP(1,J)-DHCX1*DP(2,J))
+ P(IN(3),J)=DP(3,J)
+ P(IN(3)+1,J)=DHCYY*(DP(4,J)-DHCY2*DP(1,J)-DHCY1*DP(2,J)-
+ & DHCYX*DP(3,J))
+ 980 CONTINUE
+C...Express pT with respect to new axes, if sensible.
+ PXP=-(PX(3)*FOUR(IN(3*JT+3),IN(3))+PY(3)*
+ & FOUR(IN(3*JT+3)+1,IN(3)))
+ PYP=-(PX(3)*FOUR(IN(3*JT+3),IN(3)+1)+PY(3)*
+ & FOUR(IN(3*JT+3)+1,IN(3)+1))
+ IF(ABS(PXP**2+PYP**2-PX(3)**2-PY(3)**2).LT.0.01D0) THEN
+ PX(3)=PXP
+ PY(3)=PYP
+ ENDIF
+ ENDIF
+
+C...Sum up known four-momentum. Gives coefficients for m2 expression.
+ DO 1010 J=1,4
+ DHG(J)=0D0
+ P(I,J)=PX(JT)*P(IN(3*JT+3),J)+PY(JT)*P(IN(3*JT+3)+1,J)+
+ & PX(3)*P(IN(3),J)+PY(3)*P(IN(3)+1,J)
+ DO 990 IN1=IN(3*JT+1),IN(1)-4*JS,4*JS
+ P(I,J)=P(I,J)+P(IN1+2,3)*P(IN1,J)
+ 990 CONTINUE
+ DO 1000 IN2=IN(3*JT+2),IN(2)-4*JS,4*JS
+ P(I,J)=P(I,J)+P(IN2+2,3)*P(IN2,J)
+ 1000 CONTINUE
+ 1010 CONTINUE
+ DHM(1)=FOUR(I,I)
+ DHM(2)=2D0*FOUR(I,IN(1))
+ DHM(3)=2D0*FOUR(I,IN(2))
+ DHM(4)=2D0*FOUR(IN(1),IN(2))
+
+C...Find coefficients for Gamma expression.
+ DO 1030 IN2=IN(1)+1,IN(2),4
+ DO 1020 IN1=IN(1),IN2-1,4
+ DHC=2D0*FOUR(IN1,IN2)
+ DHG(1)=DHG(1)+P(IN1+2,JT)*P(IN2+2,JT)*DHC
+ IF(IN1.EQ.IN(1)) DHG(2)=DHG(2)-JS*P(IN2+2,JT)*DHC
+ IF(IN2.EQ.IN(2)) DHG(3)=DHG(3)+JS*P(IN1+2,JT)*DHC
+ IF(IN1.EQ.IN(1).AND.IN2.EQ.IN(2)) DHG(4)=DHG(4)-DHC
+ 1020 CONTINUE
+ 1030 CONTINUE
+
+C...Solve (m2, Gamma) equation system for energies taken.
+ DHS1=DHM(JR+1)*DHG(4)-DHM(4)*DHG(JR+1)
+ IF(ABS(DHS1).LT.1D-4) GOTO 710
+ DHS2=DHM(4)*(GAM(3)-DHG(1))-DHM(JT+1)*DHG(JR+1)-DHG(4)*
+ &(P(I,5)**2-DHM(1))+DHG(JT+1)*DHM(JR+1)
+ DHS3=DHM(JT+1)*(GAM(3)-DHG(1))-DHG(JT+1)*(P(I,5)**2-DHM(1))
+ P(IN(JR)+2,4)=0.5D0*(SQRT(MAX(0D0,DHS2**2-4D0*DHS1*DHS3))/
+ &ABS(DHS1)-DHS2/DHS1)
+ IF(DHM(JT+1)+DHM(4)*P(IN(JR)+2,4).LE.0D0) GOTO 710
+ P(IN(JT)+2,4)=(P(I,5)**2-DHM(1)-DHM(JR+1)*P(IN(JR)+2,4))/
+ &(DHM(JT+1)+DHM(4)*P(IN(JR)+2,4))
+
+C...Step to new region if necessary.
+ IF(P(IN(JR)+2,4).GT.P(IN(JR)+2,3)) THEN
+ P(IN(JR)+2,4)=P(IN(JR)+2,3)
+ P(IN(JR)+2,JT)=1D0
+ IN(JR)=IN(JR)+4*JS
+ IF(JS*IN(JR).GT.JS*IN(4*JR)) GOTO 710
+ IF(FOUR(IN(1),IN(2)).LE.1D-2) THEN
+ P(IN(JT)+2,4)=P(IN(JT)+2,3)
+ P(IN(JT)+2,JT)=0D0
+ IN(JT)=IN(JT)+4*JS
+ ENDIF
+ GOTO 960
+ ELSEIF(P(IN(JT)+2,4).GT.P(IN(JT)+2,3)) THEN
+ P(IN(JT)+2,4)=P(IN(JT)+2,3)
+ P(IN(JT)+2,JT)=0D0
+ IN(JT)=IN(JT)+4*JS
+ GOTO 960
+ ENDIF
+
+C...Four-momentum of particle. Remaining quantities. Loop back.
+ 1040 DO 1050 J=1,4
+ P(I,J)=P(I,J)+P(IN(1)+2,4)*P(IN(1),J)+P(IN(2)+2,4)*P(IN(2),J)
+ P(N+NRS,J)=P(N+NRS,J)-P(I,J)
+ 1050 CONTINUE
+ IF(P(IN(1)+2,4).GT.1D0+PARU(14).OR.P(IN(1)+2,4).LT.-PARU(14).OR.
+ &P(IN(2)+2,4).GT.1D0+PARU(14).OR.P(IN(2)+2,4).LT.-PARU(14))
+ &GOTO 200
+ IF(P(I,4).LT.P(I,5)) GOTO 710
+ KFL(JT)=-KFL(3)
+ PMQ(JT)=PMQ(3)
+ PX(JT)=-PX(3)
+ PY(JT)=-PY(3)
+ GAM(JT)=GAM(3)
+ IF(IN(3).NE.IN(3*JT+3)) THEN
+ DO 1060 J=1,4
+ P(IN(3*JT+3),J)=P(IN(3),J)
+ P(IN(3*JT+3)+1,J)=P(IN(3)+1,J)
+ 1060 CONTINUE
+ ENDIF
+ DO 1070 JQ=1,2
+ IN(3*JT+JQ)=IN(JQ)
+ P(IN(JQ)+2,3)=P(IN(JQ)+2,3)-P(IN(JQ)+2,4)
+ P(IN(JQ)+2,JT)=P(IN(JQ)+2,JT)-JS*(3-2*JQ)*P(IN(JQ)+2,4)
+ 1070 CONTINUE
+ IF(IBARRK(JT).EQ.1.AND.MOD(IABS(K(I,2)),10000).GT.1000)
+ &IBARRK(JT)=0
+ GOTO 870
+
+C...Final hadron: side, flavour, hadron, mass.
+ 1080 I=I+1
+ K(I,1)=1
+ K(I,3)=IE(JR)
+ K(I,4)=0
+ K(I,5)=0
+ CALL PYKFDI(KFL(JR),-KFL(3),KFLDMP,K(I,2))
+ IF(K(I,2).EQ.0) GOTO 710
+ IF(IBARRK(JT).EQ.1.AND.MOD(IABS(K(I-1,2)),10000).GT.1000)
+ &IBARRK(JT)=0
+ IF(IBARRK(JT).EQ.1.AND.MOD(IABS(K(I,2)),10000).GT.1000)
+ &K(I,3)=IJUORI(JT)
+ IF(IBARRK(JR).EQ.1.AND.MOD(IABS(K(I,2)),10000).GT.1000)
+ &K(I,3)=IJUORI(JR)
+ P(I,5)=PYMASS(K(I,2))
+ PR(JR)=P(I,5)**2+(PX(JR)-PX(3))**2+(PY(JR)-PY(3))**2
+
+C...Final two hadrons: find common setup of four-vectors.
+ JQ=1
+ IF(P(IN(4)+2,3)*P(IN(5)+2,3)*FOUR(IN(4),IN(5)).LT.
+ &P(IN(7)+2,3)*P(IN(8)+2,3)*FOUR(IN(7),IN(8))) JQ=2
+ DHC12=FOUR(IN(3*JQ+1),IN(3*JQ+2))
+ DHR1=FOUR(N+NRS,IN(3*JQ+2))/DHC12
+ DHR2=FOUR(N+NRS,IN(3*JQ+1))/DHC12
+ IF(IN(4).NE.IN(7).OR.IN(5).NE.IN(8)) THEN
+ PX(3-JQ)=-FOUR(N+NRS,IN(3*JQ+3))-PX(JQ)
+ PY(3-JQ)=-FOUR(N+NRS,IN(3*JQ+3)+1)-PY(JQ)
+ PR(3-JQ)=P(I+(JT+JQ-3)**2-1,5)**2+(PX(3-JQ)+(2*JQ-3)*JS*
+ & PX(3))**2+(PY(3-JQ)+(2*JQ-3)*JS*PY(3))**2
+ ENDIF
+
+C...Solve kinematics for final two hadrons, if possible.
+ WREM2=2D0*DHR1*DHR2*DHC12
+ FD=(SQRT(PR(1))+SQRT(PR(2)))/SQRT(WREM2)
+ IF(MJU(1)+MJU(2).NE.0.AND.I.EQ.ISAV+2.AND.FD.GE.1D0) GOTO 200
+ IF(FD.GE.1D0) GOTO 710
+ FA=WREM2+PR(JT)-PR(JR)
+ FB=SQRT(MAX(0D0,FA**2-4D0*WREM2*PR(JT)))
+ PREVCF=PARJ(42)
+ IF(MSTJ(11).EQ.2) PREVCF=PARJ(39)
+ PREV=1D0/(1D0+EXP(MIN(50D0,PREVCF*FB*PARJ(40))))
+ FB=SIGN(FB,JS*(PYR(0)-PREV))
+ KFL1A=IABS(KFL(1))
+ KFL2A=IABS(KFL(2))
+ IF(MAX(MOD(KFL1A,10),MOD(KFL1A/1000,10),MOD(KFL2A,10),
+ &MOD(KFL2A/1000,10)).GE.6) FB=SIGN(SQRT(MAX(0D0,FA**2-
+ &4D0*WREM2*PR(JT))),DBLE(JS))
+ DO 1090 J=1,4
+ P(I-1,J)=(PX(JT)+PX(3))*P(IN(3*JQ+3),J)+(PY(JT)+PY(3))*
+ & P(IN(3*JQ+3)+1,J)+0.5D0*(DHR1*(FA+FB)*P(IN(3*JQ+1),J)+
+ & DHR2*(FA-FB)*P(IN(3*JQ+2),J))/WREM2
+ P(I,J)=P(N+NRS,J)-P(I-1,J)
+ 1090 CONTINUE
+ IF(P(I-1,4).LT.P(I-1,5).OR.P(I,4).LT.P(I,5)) GOTO 710
+ DM2F1=P(I-1,4)**2-P(I-1,1)**2-P(I-1,2)**2-P(I-1,3)**2-P(I-1,5)**2
+ DM2F2=P(I,4)**2-P(I,1)**2-P(I,2)**2-P(I,3)**2-P(I,5)**2
+ IF(DM2F1.GT.1D-10*P(I-1,4)**2.OR.DM2F2.GT.1D-10*P(I,4)**2) THEN
+ NTRYFN=NTRYFN+1
+ IF(NTRYFN.LT.100) GOTO 140
+ CALL PYERRM(13,'(PYSTRF:) bad energies for final two hadrons')
+ ENDIF
+
+C...Mark jets as fragmented and give daughter pointers.
+ N=I-NRS+1
+ DO 1100 I=NSAV+1,NSAV+NP
+ IM=K(I,3)
+ K(IM,1)=K(IM,1)+10
+ IF(MSTU(16).NE.2) THEN
+ K(IM,4)=NSAV+1
+ K(IM,5)=NSAV+1
+ ELSE
+ K(IM,4)=NSAV+2
+ K(IM,5)=N
+ ENDIF
+ 1100 CONTINUE
+
+C...Document string system. Move up particles.
+ NSAV=NSAV+1
+ K(NSAV,1)=11
+ K(NSAV,2)=92
+ K(NSAV,3)=IP
+ K(NSAV,4)=NSAV+1
+ K(NSAV,5)=N
+ DO 1110 J=1,4
+ P(NSAV,J)=DPS(J)
+ V(NSAV,J)=V(IP,J)
+ 1110 CONTINUE
+ P(NSAV,5)=SQRT(MAX(0D0,DPS(4)**2-DPS(1)**2-DPS(2)**2-DPS(3)**2))
+ V(NSAV,5)=0D0
+ DO 1130 I=NSAV+1,N
+ DO 1120 J=1,5
+ K(I,J)=K(I+NRS-1,J)
+ P(I,J)=P(I+NRS-1,J)
+ V(I,J)=0D0
+ 1120 CONTINUE
+ 1130 CONTINUE
+ MSTU91=MSTU(90)
+ DO 1140 IZ=MSTU90+1,MSTU91
+ MSTU9T(IZ)=MSTU(90+IZ)-NRS+1-NSAV+N
+ PARU9T(IZ)=PARU(90+IZ)
+ 1140 CONTINUE
+ MSTU(90)=MSTU90
+
+C...Order particles in rank along the chain. Update mother pointer.
+ DO 1160 I=NSAV+1,N
+ DO 1150 J=1,5
+ K(I-NSAV+N,J)=K(I,J)
+ P(I-NSAV+N,J)=P(I,J)
+ 1150 CONTINUE
+ 1160 CONTINUE
+ I1=NSAV
+ DO 1190 I=N+1,2*N-NSAV
+ IF(K(I,3).NE.IE(1).AND.K(I,3).NE.IJUORI(1)) GOTO 1190
+ I1=I1+1
+ DO 1170 J=1,5
+ K(I1,J)=K(I,J)
+ P(I1,J)=P(I,J)
+ 1170 CONTINUE
+ IF(MSTU(16).NE.2) K(I1,3)=NSAV
+ DO 1180 IZ=MSTU90+1,MSTU91
+ IF(MSTU9T(IZ).EQ.I) THEN
+ MSTU(90)=MSTU(90)+1
+ MSTU(90+MSTU(90))=I1
+ PARU(90+MSTU(90))=PARU9T(IZ)
+ ENDIF
+ 1180 CONTINUE
+ 1190 CONTINUE
+ DO 1220 I=2*N-NSAV,N+1,-1
+ IF(K(I,3).EQ.IE(1).OR.K(I,3).EQ.IJUORI(1)) GOTO 1220
+ I1=I1+1
+ DO 1200 J=1,5
+ K(I1,J)=K(I,J)
+ P(I1,J)=P(I,J)
+ 1200 CONTINUE
+ IF(MSTU(16).NE.2) K(I1,3)=NSAV
+ DO 1210 IZ=MSTU90+1,MSTU91
+ IF(MSTU9T(IZ).EQ.I) THEN
+ MSTU(90)=MSTU(90)+1
+ MSTU(90+MSTU(90))=I1
+ PARU(90+MSTU(90))=PARU9T(IZ)
+ ENDIF
+ 1210 CONTINUE
+ 1220 CONTINUE
+
+C...Boost back particle system. Set production vertices.
+ IF(MBST.EQ.0) THEN
+ MSTU(33)=1
+ CALL PYROBO(NSAV+1,N,0D0,0D0,DPS(1)/DPS(4),DPS(2)/DPS(4),
+ & DPS(3)/DPS(4))
+ ELSE
+ DO 1230 I=NSAV+1,N
+ HHPMT=P(I,1)**2+P(I,2)**2+P(I,5)**2
+ IF(P(I,3).GT.0D0) THEN
+ HHPEZ=(P(I,4)+P(I,3))*HHBZ
+ P(I,3)=0.5D0*(HHPEZ-HHPMT/HHPEZ)
+ P(I,4)=0.5D0*(HHPEZ+HHPMT/HHPEZ)
+ ELSE
+ HHPEZ=(P(I,4)-P(I,3))/HHBZ
+ P(I,3)=-0.5D0*(HHPEZ-HHPMT/HHPEZ)
+ P(I,4)=0.5D0*(HHPEZ+HHPMT/HHPEZ)
+ ENDIF
+ 1230 CONTINUE
+ ENDIF
+ DO 1250 I=NSAV+1,N
+ DO 1240 J=1,4
+ V(I,J)=V(IP,J)
+ 1240 CONTINUE
+ 1250 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYJURF
+C...From three given input vectors in PJU the boost VJU from
+C...the "lab frame" to the junction rest frame is constructed.
+
+ SUBROUTINE PYJURF(PJU,VJU)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...Input, output and local arrays.
+ DIMENSION PJU(3,5),VJU(5),PSUM(5),A(3,3),PENEW(3),PCM(5,5)
+ DATA TWOPI/6.283186D0/
+
+C...Calculate masses and other invariants.
+ DO 100 J=1,4
+ PSUM(J)=PJU(1,J)+PJU(2,J)+PJU(3,J)
+ 100 CONTINUE
+ PSUM2=PSUM(4)**2-PSUM(1)**2-PSUM(2)**2-PSUM(3)**2
+ PSUM(5)=SQRT(PSUM2)
+ DO 120 I=1,3
+ DO 110 J=1,3
+ A(I,J)=PJU(I,4)*PJU(J,4)-PJU(I,1)*PJU(J,1)-
+ & PJU(I,2)*PJU(J,2)-PJU(I,3)*PJU(J,3)
+ 110 CONTINUE
+ 120 CONTINUE
+
+C...Pick I to be most massive parton and J to be the one closest to I.
+ ITRY=0
+ I=1
+ IF(A(2,2).GT.A(1,1)) I=2
+ IF(A(3,3).GT.MAX(A(1,1),A(2,2))) I=3
+ 130 ITRY=ITRY+1
+ J=1+MOD(I,3)
+ K=1+MOD(J,3)
+ IF(A(I,K)**2*A(J,J).LT.A(I,J)**2*A(K,K)) THEN
+ K=1+MOD(I,3)
+ J=1+MOD(K,3)
+ ENDIF
+ PMI2=A(I,I)
+ PMJ2=A(J,J)
+ PMK2=A(K,K)
+ AIJ=A(I,J)
+ AIK=A(I,K)
+ AJK=A(J,K)
+
+C...Trivial find new parton energies if all three partons are massless.
+ IF(PMI2.LT.1D-4) THEN
+ PEI=SQRT(2D0*AIK*AIJ/(3D0*AJK))
+ PEJ=SQRT(2D0*AJK*AIJ/(3D0*AIK))
+ PEK=SQRT(2D0*AIK*AJK/(3D0*AIJ))
+
+C...Else find momentum range for parton I and values at extremes.
+ ELSE
+ PAIMIN=0D0
+ PEIMIN=SQRT(PMI2)
+ PEJMIN=AIJ/PEIMIN
+ PEKMIN=AIK/PEIMIN
+ PAJMIN=SQRT(MAX(0D0,PEJMIN**2-PMJ2))
+ PAKMIN=SQRT(MAX(0D0,PEKMIN**2-PMK2))
+ FMIN=PEJMIN*PEKMIN+0.5D0*PAJMIN*PAKMIN-AJK
+ PEIMAX=(AIJ+AIK)/SQRT(PMJ2+PMK2+2D0*AJK)
+ IF(PMJ2.GT.1D-4) PEIMAX=AIJ/SQRT(PMJ2)
+ PAIMAX=SQRT(MAX(0D0,PEIMAX**2-PMI2))
+ HI=PEIMAX**2-0.25D0*PAIMAX**2
+ PAJMAX=(PEIMAX*SQRT(MAX(0D0,AIJ**2-PMJ2*HI))-
+ & 0.5D0*PAIMAX*AIJ)/HI
+ PAKMAX=(PEIMAX*SQRT(MAX(0D0,AIK**2-PMK2*HI))-
+ & 0.5D0*PAIMAX*AIK)/HI
+ PEJMAX=SQRT(PAJMAX**2+PMJ2)
+ PEKMAX=SQRT(PAKMAX**2+PMK2)
+ FMAX=PEJMAX*PEKMAX+0.5D0*PAJMAX*PAKMAX-AJK
+
+C...If unexpected values at upper endpoint then pick another parton.
+ IF(FMAX.GT.0D0.AND.ITRY.LE.2) THEN
+ I1=1+MOD(I,3)
+ IF(A(I1,I1).GE.1D-4) THEN
+ I=I1
+ GOTO 130
+ ENDIF
+ ITRY=ITRY+1
+ I1=1+MOD(I,3)
+ IF(ITRY.LE.2.AND.A(I1,I1).GE.1D-4) THEN
+ I=I1
+ GOTO 130
+ ENDIF
+ ENDIF
+
+C..Start binary + linear search to find solution inside range.
+ ITER=0
+ ITMIN=0
+ ITMAX=0
+ PAI=0.5D0*(PAIMIN+PAIMAX)
+ 140 ITER=ITER+1
+
+C...Derive momentum of other two partons and distance to root.
+ PEI=SQRT(PAI**2+PMI2)
+ HI=PEI**2-0.25D0*PAI**2
+ PAJ=(PEI*SQRT(MAX(0D0,AIJ**2-PMJ2*HI))-0.5D0*PAI*AIJ)/HI
+ PEJ=SQRT(PAJ**2+PMJ2)
+ PAK=(PEI*SQRT(MAX(0D0,AIK**2-PMK2*HI))-0.5D0*PAI*AIK)/HI
+ PEK=SQRT(PAK**2+PMK2)
+ FNOW=PEJ*PEK+0.5D0*PAJ*PAK-AJK
+
+C...Pick next I momentum to explore, hopefully closer to root.
+ IF(FNOW.GT.0D0) THEN
+ PAIMIN=PAI
+ FMIN=FNOW
+ ITMIN=ITMIN+1
+ ELSE
+ PAIMAX=PAI
+ FMAX=FNOW
+ ITMAX=ITMAX+1
+ ENDIF
+ IF((ITER.LT.10.OR.ITMIN.LE.1.OR.ITMAX.LE.1).AND.ITER.LT.20)
+ & THEN
+ PAI=0.5D0*(PAIMIN+PAIMAX)
+ GOTO 140
+ ELSEIF(ITER.LT.40.AND.FMIN.GT.0D0.AND.FMAX.LT.0D0.AND.
+ & ABS(FNOW).GT.1D-12*PSUM2) THEN
+ PAI=PAIMIN+(PAIMAX-PAIMIN)*FMIN/(FMIN-FMAX)
+ GOTO 140
+ ENDIF
+ ENDIF
+
+C...Now know energies in junction rest frame.
+ PENEW(I)=PEI
+ PENEW(J)=PEJ
+ PENEW(K)=PEK
+
+C...Boost (copy of) partons to their rest frame.
+ VXCM=-PSUM(1)/PSUM(5)
+ VYCM=-PSUM(2)/PSUM(5)
+ VZCM=-PSUM(3)/PSUM(5)
+ GAMCM=SQRT(1D0+VXCM**2+VYCM**2+VZCM**2)
+ DO 150 I=1,3
+ FAC1=PJU(I,1)*VXCM+PJU(I,2)*VYCM+PJU(I,3)*VZCM
+ FAC2=FAC1/(1D0+GAMCM)+PJU(I,4)
+ PCM(I,1)=PJU(I,1)+FAC2*VXCM
+ PCM(I,2)=PJU(I,2)+FAC2*VYCM
+ PCM(I,3)=PJU(I,3)+FAC2*VZCM
+ PCM(I,4)=PJU(I,4)*GAMCM+FAC1
+ PCM(I,5)=SQRT(PCM(I,1)**2+PCM(I,2)**2+PCM(I,3)**2)
+ 150 CONTINUE
+
+C...Construct difference vectors and boost to junction rest frame.
+ DO 160 J=1,3
+ PCM(4,J)=PCM(1,J)/PCM(1,4)-PCM(2,J)/PCM(2,4)
+ PCM(5,J)=PCM(1,J)/PCM(1,4)-PCM(3,J)/PCM(3,4)
+ 160 CONTINUE
+ PCM(4,4)=PENEW(1)/PCM(1,4)-PENEW(2)/PCM(2,4)
+ PCM(5,4)=PENEW(1)/PCM(1,4)-PENEW(3)/PCM(3,4)
+ PCM4S=PCM(4,1)**2+PCM(4,2)**2+PCM(4,3)**2
+ PCM5S=PCM(5,1)**2+PCM(5,2)**2+PCM(5,3)**2
+ PCM45=PCM(4,1)*PCM(5,1)+PCM(4,2)*PCM(5,2)+PCM(4,3)*PCM(5,3)
+ C4=(PCM5S*PCM(4,4)-PCM45*PCM(5,4))/(PCM4S*PCM5S-PCM45**2)
+ C5=(PCM4S*PCM(5,4)-PCM45*PCM(4,4))/(PCM4S*PCM5S-PCM45**2)
+ VXJU=C4*PCM(4,1)+C5*PCM(5,1)
+ VYJU=C4*PCM(4,2)+C5*PCM(5,2)
+ VZJU=C4*PCM(4,3)+C5*PCM(5,3)
+ GAMJU=SQRT(1D0+VXJU**2+VYJU**2+VZJU**2)
+
+C...Add two boosts, giving final result.
+ FCM=(VXJU*VXCM+VYJU*VYCM+VZJU*VZCM)/(1+GAMCM)+GAMJU
+ VJU(1)=VXJU+FCM*VXCM
+ VJU(2)=VYJU+FCM*VYCM
+ VJU(3)=VZJU+FCM*VZCM
+ VJU(4)=SQRT(1D0+VJU(1)**2+VJU(2)**2+VJU(3)**2)
+ VJU(5)=1D0
+
+C...In case of error in reconstruction: revert to CM frame of system.
+ CTH12=(PCM(1,1)*PCM(2,1)+PCM(1,2)*PCM(2,2)+PCM(1,3)*PCM(2,3))/
+ &(PCM(1,5)*PCM(2,5))
+ CTH13=(PCM(1,1)*PCM(3,1)+PCM(1,2)*PCM(3,2)+PCM(1,3)*PCM(3,3))/
+ &(PCM(1,5)*PCM(3,5))
+ CTH23=(PCM(2,1)*PCM(3,1)+PCM(2,2)*PCM(3,2)+PCM(2,3)*PCM(3,3))/
+ &(PCM(2,5)*PCM(3,5))
+ ERRCCM=(CTH12+0.5D0)**2+(CTH13+0.5D0)**2+(CTH23+0.5D0)**2
+ ERRTCM=TWOPI-ACOS(CTH12)-ACOS(CTH13)-ACOS(CTH23)
+ DO 170 I=1,3
+ FAC1=PJU(I,1)*VJU(1)+PJU(I,2)*VJU(2)+PJU(I,3)*VJU(3)
+ FAC2=FAC1/(1D0+VJU(4))+PJU(I,4)
+ PCM(I,1)=PJU(I,1)+FAC2*VJU(1)
+ PCM(I,2)=PJU(I,2)+FAC2*VJU(2)
+ PCM(I,3)=PJU(I,3)+FAC2*VJU(3)
+ PCM(I,4)=PJU(I,4)*VJU(4)+FAC1
+ PCM(I,5)=SQRT(PCM(I,1)**2+PCM(I,2)**2+PCM(I,3)**2)
+ 170 CONTINUE
+ CTH12=(PCM(1,1)*PCM(2,1)+PCM(1,2)*PCM(2,2)+PCM(1,3)*PCM(2,3))/
+ &(PCM(1,5)*PCM(2,5))
+ CTH13=(PCM(1,1)*PCM(3,1)+PCM(1,2)*PCM(3,2)+PCM(1,3)*PCM(3,3))/
+ &(PCM(1,5)*PCM(3,5))
+ CTH23=(PCM(2,1)*PCM(3,1)+PCM(2,2)*PCM(3,2)+PCM(2,3)*PCM(3,3))/
+ &(PCM(2,5)*PCM(3,5))
+ ERRCJU=(CTH12+0.5D0)**2+(CTH13+0.5D0)**2+(CTH23+0.5D0)**2
+ ERRTJU=TWOPI-ACOS(CTH12)-ACOS(CTH13)-ACOS(CTH23)
+ IF(ERRCJU+ERRTJU.GT.ERRCCM+ERRTCM) THEN
+ VJU(1)=VXCM
+ VJU(2)=VYCM
+ VJU(3)=VZCM
+ VJU(4)=GAMCM
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYINDF
+C...Handles the fragmentation of a jet system (or a single
+C...jet) according to independent fragmentation models.
+
+ SUBROUTINE PYINDF(IP)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local arrays.
+ DIMENSION DPS(5),PSI(4),NFI(3),NFL(3),IFET(3),KFLF(3),
+ &KFLO(2),PXO(2),PYO(2),WO(2)
+
+C.. MOPS error message
+ IF(MSTJ(12).GT.3) CALL PYERRM(9,'(PYINDF:) MSTJ(12)>3 options'//
+ &' are not treated as expected in independent fragmentation')
+
+C...Reset counters. Identify parton system and take copy. Check flavour.
+ NSAV=N
+ MSTU90=MSTU(90)
+ NJET=0
+ KQSUM=0
+ DO 100 J=1,5
+ DPS(J)=0D0
+ 100 CONTINUE
+ I=IP-1
+ 110 I=I+1
+ IF(I.GT.MIN(N,MSTU(4)-MSTU(32))) THEN
+ CALL PYERRM(12,'(PYINDF:) failed to reconstruct jet system')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IF(K(I,1).NE.1.AND.K(I,1).NE.2) GOTO 110
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 110
+ KQ=KCHG(KC,2)*ISIGN(1,K(I,2))
+ IF(KQ.EQ.0) GOTO 110
+ NJET=NJET+1
+ IF(KQ.NE.2) KQSUM=KQSUM+KQ
+ DO 120 J=1,5
+ K(NSAV+NJET,J)=K(I,J)
+ P(NSAV+NJET,J)=P(I,J)
+ DPS(J)=DPS(J)+P(I,J)
+ 120 CONTINUE
+ K(NSAV+NJET,3)=I
+ IF(K(I,1).EQ.2.OR.(MSTJ(3).LE.5.AND.N.GT.I.AND.
+ &K(I+1,1).EQ.2)) GOTO 110
+ IF(NJET.NE.1.AND.KQSUM.NE.0) THEN
+ CALL PYERRM(12,'(PYINDF:) unphysical flavour combination')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+
+C...Boost copied system to CM frame. Find CM energy and sum flavours.
+ IF(NJET.NE.1) THEN
+ MSTU(33)=1
+ CALL PYROBO(NSAV+1,NSAV+NJET,0D0,0D0,-DPS(1)/DPS(4),
+ & -DPS(2)/DPS(4),-DPS(3)/DPS(4))
+ ENDIF
+ PECM=0D0
+ DO 130 J=1,3
+ NFI(J)=0
+ 130 CONTINUE
+ DO 140 I=NSAV+1,NSAV+NJET
+ PECM=PECM+P(I,4)
+ KFA=IABS(K(I,2))
+ IF(KFA.LE.3) THEN
+ NFI(KFA)=NFI(KFA)+ISIGN(1,K(I,2))
+ ELSEIF(KFA.GT.1000) THEN
+ KFLA=MOD(KFA/1000,10)
+ KFLB=MOD(KFA/100,10)
+ IF(KFLA.LE.3) NFI(KFLA)=NFI(KFLA)+ISIGN(1,K(I,2))
+ IF(KFLB.LE.3) NFI(KFLB)=NFI(KFLB)+ISIGN(1,K(I,2))
+ ENDIF
+ 140 CONTINUE
+
+C...Loop over attempts made. Reset counters.
+ NTRY=0
+ 150 NTRY=NTRY+1
+ IF(NTRY.GT.200) THEN
+ CALL PYERRM(14,'(PYINDF:) caught in infinite loop')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ N=NSAV+NJET
+ MSTU(90)=MSTU90
+ DO 160 J=1,3
+ NFL(J)=NFI(J)
+ IFET(J)=0
+ KFLF(J)=0
+ 160 CONTINUE
+
+C...Loop over jets to be fragmented.
+ DO 230 IP1=NSAV+1,NSAV+NJET
+ MSTJ(91)=0
+ NSAV1=N
+ MSTU91=MSTU(90)
+
+C...Initial flavour and momentum values. Jet along +z axis.
+ KFLH=IABS(K(IP1,2))
+ IF(KFLH.GT.10) KFLH=MOD(KFLH/1000,10)
+ KFLO(2)=0
+ WF=P(IP1,4)+SQRT(P(IP1,1)**2+P(IP1,2)**2+P(IP1,3)**2)
+
+C...Initial values for quark or diquark jet.
+ 170 IF(IABS(K(IP1,2)).NE.21) THEN
+ NSTR=1
+ KFLO(1)=K(IP1,2)
+ CALL PYPTDI(0,PXO(1),PYO(1))
+ WO(1)=WF
+
+C...Initial values for gluon treated like random quark jet.
+ ELSEIF(MSTJ(2).LE.2) THEN
+ NSTR=1
+ IF(MSTJ(2).EQ.2) MSTJ(91)=1
+ KFLO(1)=INT(1D0+(2D0+PARJ(2))*PYR(0))*(-1)**INT(PYR(0)+0.5D0)
+ CALL PYPTDI(0,PXO(1),PYO(1))
+ WO(1)=WF
+
+C...Initial values for gluon treated like quark-antiquark jet pair,
+C...sharing energy according to Altarelli-Parisi splitting function.
+ ELSE
+ NSTR=2
+ IF(MSTJ(2).EQ.4) MSTJ(91)=1
+ KFLO(1)=INT(1D0+(2D0+PARJ(2))*PYR(0))*(-1)**INT(PYR(0)+0.5D0)
+ KFLO(2)=-KFLO(1)
+ CALL PYPTDI(0,PXO(1),PYO(1))
+ PXO(2)=-PXO(1)
+ PYO(2)=-PYO(1)
+ WO(1)=WF*PYR(0)**(1D0/3D0)
+ WO(2)=WF-WO(1)
+ ENDIF
+
+C...Initial values for rank, flavour, pT and W+.
+ DO 220 ISTR=1,NSTR
+ 180 I=N
+ MSTU(90)=MSTU91
+ IRANK=0
+ KFL1=KFLO(ISTR)
+ PX1=PXO(ISTR)
+ PY1=PYO(ISTR)
+ W=WO(ISTR)
+
+C...New hadron. Generate flavour and hadron species.
+ 190 I=I+1
+ IF(I.GE.MSTU(4)-MSTU(32)-NJET-5) THEN
+ CALL PYERRM(11,'(PYINDF:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IRANK=IRANK+1
+ K(I,1)=1
+ K(I,3)=IP1
+ K(I,4)=0
+ K(I,5)=0
+ 200 CALL PYKFDI(KFL1,0,KFL2,K(I,2))
+ IF(K(I,2).EQ.0) GOTO 180
+ IF(IRANK.EQ.1.AND.IABS(KFL1).LE.10.AND.IABS(KFL2).GT.10) THEN
+ IF(PYR(0).GT.PARJ(19)) GOTO 200
+ ENDIF
+
+C...Find hadron mass. Generate four-momentum.
+ P(I,5)=PYMASS(K(I,2))
+ CALL PYPTDI(KFL1,PX2,PY2)
+ P(I,1)=PX1+PX2
+ P(I,2)=PY1+PY2
+ PR=P(I,5)**2+P(I,1)**2+P(I,2)**2
+ CALL PYZDIS(KFL1,KFL2,PR,Z)
+ MZSAV=0
+ IF(IABS(KFL1).GE.4.AND.IABS(KFL1).LE.8.AND.MSTU(90).LT.8) THEN
+ MZSAV=1
+ MSTU(90)=MSTU(90)+1
+ MSTU(90+MSTU(90))=I
+ PARU(90+MSTU(90))=Z
+ ENDIF
+ P(I,3)=0.5D0*(Z*W-PR/MAX(1D-4,Z*W))
+ P(I,4)=0.5D0*(Z*W+PR/MAX(1D-4,Z*W))
+ IF(MSTJ(3).GE.1.AND.IRANK.EQ.1.AND.KFLH.GE.4.AND.
+ & P(I,3).LE.0.001D0) THEN
+ IF(W.GE.P(I,5)+0.5D0*PARJ(32)) GOTO 180
+ P(I,3)=0.0001D0
+ P(I,4)=SQRT(PR)
+ Z=P(I,4)/W
+ ENDIF
+
+C...Remaining flavour and momentum.
+ KFL1=-KFL2
+ PX1=-PX2
+ PY1=-PY2
+ W=(1D0-Z)*W
+ DO 210 J=1,5
+ V(I,J)=0D0
+ 210 CONTINUE
+
+C...Check if pL acceptable. Go back for new hadron if enough energy.
+ IF(MSTJ(3).GE.0.AND.P(I,3).LT.0D0) THEN
+ I=I-1
+ IF(MZSAV.EQ.1) MSTU(90)=MSTU(90)-1
+ ENDIF
+ IF(W.GT.PARJ(31)) GOTO 190
+ N=I
+ 220 CONTINUE
+ IF(MOD(MSTJ(3),5).EQ.4.AND.N.EQ.NSAV1) WF=WF+0.1D0*PARJ(32)
+ IF(MOD(MSTJ(3),5).EQ.4.AND.N.EQ.NSAV1) GOTO 170
+
+C...Rotate jet to new direction.
+ THE=PYANGL(P(IP1,3),SQRT(P(IP1,1)**2+P(IP1,2)**2))
+ PHI=PYANGL(P(IP1,1),P(IP1,2))
+ MSTU(33)=1
+ CALL PYROBO(NSAV1+1,N,THE,PHI,0D0,0D0,0D0)
+ K(K(IP1,3),4)=NSAV1+1
+ K(K(IP1,3),5)=N
+
+C...End of jet generation loop. Skip conservation in some cases.
+ 230 CONTINUE
+ IF(NJET.EQ.1.OR.MSTJ(3).LE.0) GOTO 490
+ IF(MOD(MSTJ(3),5).NE.0.AND.N-NSAV-NJET.LT.2) GOTO 150
+
+C...Subtract off produced hadron flavours, finished if zero.
+ DO 240 I=NSAV+NJET+1,N
+ KFA=IABS(K(I,2))
+ KFLA=MOD(KFA/1000,10)
+ KFLB=MOD(KFA/100,10)
+ KFLC=MOD(KFA/10,10)
+ IF(KFLA.EQ.0) THEN
+ IF(KFLB.LE.3) NFL(KFLB)=NFL(KFLB)-ISIGN(1,K(I,2))*(-1)**KFLB
+ IF(KFLC.LE.3) NFL(KFLC)=NFL(KFLC)+ISIGN(1,K(I,2))*(-1)**KFLB
+ ELSE
+ IF(KFLA.LE.3) NFL(KFLA)=NFL(KFLA)-ISIGN(1,K(I,2))
+ IF(KFLB.LE.3) NFL(KFLB)=NFL(KFLB)-ISIGN(1,K(I,2))
+ IF(KFLC.LE.3) NFL(KFLC)=NFL(KFLC)-ISIGN(1,K(I,2))
+ ENDIF
+ 240 CONTINUE
+ NREQ=(IABS(NFL(1))+IABS(NFL(2))+IABS(NFL(3))-IABS(NFL(1)+
+ &NFL(2)+NFL(3)))/2+IABS(NFL(1)+NFL(2)+NFL(3))/3
+ IF(NREQ.EQ.0) GOTO 320
+
+C...Take away flavour of low-momentum particles until enough freedom.
+ NREM=0
+ 250 IREM=0
+ P2MIN=PECM**2
+ DO 260 I=NSAV+NJET+1,N
+ P2=P(I,1)**2+P(I,2)**2+P(I,3)**2
+ IF(K(I,1).EQ.1.AND.P2.LT.P2MIN) IREM=I
+ IF(K(I,1).EQ.1.AND.P2.LT.P2MIN) P2MIN=P2
+ 260 CONTINUE
+ IF(IREM.EQ.0) GOTO 150
+ K(IREM,1)=7
+ KFA=IABS(K(IREM,2))
+ KFLA=MOD(KFA/1000,10)
+ KFLB=MOD(KFA/100,10)
+ KFLC=MOD(KFA/10,10)
+ IF(KFLA.GE.4.OR.KFLB.GE.4) K(IREM,1)=8
+ IF(K(IREM,1).EQ.8) GOTO 250
+ IF(KFLA.EQ.0) THEN
+ ISGN=ISIGN(1,K(IREM,2))*(-1)**KFLB
+ IF(KFLB.LE.3) NFL(KFLB)=NFL(KFLB)+ISGN
+ IF(KFLC.LE.3) NFL(KFLC)=NFL(KFLC)-ISGN
+ ELSE
+ IF(KFLA.LE.3) NFL(KFLA)=NFL(KFLA)+ISIGN(1,K(IREM,2))
+ IF(KFLB.LE.3) NFL(KFLB)=NFL(KFLB)+ISIGN(1,K(IREM,2))
+ IF(KFLC.LE.3) NFL(KFLC)=NFL(KFLC)+ISIGN(1,K(IREM,2))
+ ENDIF
+ NREM=NREM+1
+ NREQ=(IABS(NFL(1))+IABS(NFL(2))+IABS(NFL(3))-IABS(NFL(1)+
+ &NFL(2)+NFL(3)))/2+IABS(NFL(1)+NFL(2)+NFL(3))/3
+ IF(NREQ.GT.NREM) GOTO 250
+ DO 270 I=NSAV+NJET+1,N
+ IF(K(I,1).EQ.8) K(I,1)=1
+ 270 CONTINUE
+
+C...Find combination of existing and new flavours for hadron.
+ 280 NFET=2
+ IF(NFL(1)+NFL(2)+NFL(3).NE.0) NFET=3
+ IF(NREQ.LT.NREM) NFET=1
+ IF(IABS(NFL(1))+IABS(NFL(2))+IABS(NFL(3)).EQ.0) NFET=0
+ DO 290 J=1,NFET
+ IFET(J)=1+(IABS(NFL(1))+IABS(NFL(2))+IABS(NFL(3)))*PYR(0)
+ KFLF(J)=ISIGN(1,NFL(1))
+ IF(IFET(J).GT.IABS(NFL(1))) KFLF(J)=ISIGN(2,NFL(2))
+ IF(IFET(J).GT.IABS(NFL(1))+IABS(NFL(2))) KFLF(J)=ISIGN(3,NFL(3))
+ 290 CONTINUE
+ IF(NFET.EQ.2.AND.(IFET(1).EQ.IFET(2).OR.KFLF(1)*KFLF(2).GT.0))
+ &GOTO 280
+ IF(NFET.EQ.3.AND.(IFET(1).EQ.IFET(2).OR.IFET(1).EQ.IFET(3).OR.
+ &IFET(2).EQ.IFET(3).OR.KFLF(1)*KFLF(2).LT.0.OR.KFLF(1)*KFLF(3)
+ &.LT.0.OR.KFLF(1)*(NFL(1)+NFL(2)+NFL(3)).LT.0)) GOTO 280
+ IF(NFET.EQ.0) KFLF(1)=1+INT((2D0+PARJ(2))*PYR(0))
+ IF(NFET.EQ.0) KFLF(2)=-KFLF(1)
+ IF(NFET.EQ.1) KFLF(2)=ISIGN(1+INT((2D0+PARJ(2))*PYR(0)),-KFLF(1))
+ IF(NFET.LE.2) KFLF(3)=0
+ IF(KFLF(3).NE.0) THEN
+ KFLFC=ISIGN(1000*MAX(IABS(KFLF(1)),IABS(KFLF(3)))+
+ & 100*MIN(IABS(KFLF(1)),IABS(KFLF(3)))+1,KFLF(1))
+ IF(KFLF(1).EQ.KFLF(3).OR.(1D0+3D0*PARJ(4))*PYR(0).GT.1D0)
+ & KFLFC=KFLFC+ISIGN(2,KFLFC)
+ ELSE
+ KFLFC=KFLF(1)
+ ENDIF
+ CALL PYKFDI(KFLFC,KFLF(2),KFLDMP,KF)
+ IF(KF.EQ.0) GOTO 280
+ DO 300 J=1,MAX(2,NFET)
+ NFL(IABS(KFLF(J)))=NFL(IABS(KFLF(J)))-ISIGN(1,KFLF(J))
+ 300 CONTINUE
+
+C...Store hadron at random among free positions.
+ NPOS=MIN(1+INT(PYR(0)*NREM),NREM)
+ DO 310 I=NSAV+NJET+1,N
+ IF(K(I,1).EQ.7) NPOS=NPOS-1
+ IF(K(I,1).EQ.1.OR.NPOS.NE.0) GOTO 310
+ K(I,1)=1
+ K(I,2)=KF
+ P(I,5)=PYMASS(K(I,2))
+ P(I,4)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ 310 CONTINUE
+ NREM=NREM-1
+ NREQ=(IABS(NFL(1))+IABS(NFL(2))+IABS(NFL(3))-IABS(NFL(1)+
+ &NFL(2)+NFL(3)))/2+IABS(NFL(1)+NFL(2)+NFL(3))/3
+ IF(NREM.GT.0) GOTO 280
+
+C...Compensate for missing momentum in global scheme (3 options).
+ 320 IF(MOD(MSTJ(3),5).NE.0.AND.MOD(MSTJ(3),5).NE.4) THEN
+ DO 340 J=1,3
+ PSI(J)=0D0
+ DO 330 I=NSAV+NJET+1,N
+ PSI(J)=PSI(J)+P(I,J)
+ 330 CONTINUE
+ 340 CONTINUE
+ PSI(4)=PSI(1)**2+PSI(2)**2+PSI(3)**2
+ PWS=0D0
+ DO 350 I=NSAV+NJET+1,N
+ IF(MOD(MSTJ(3),5).EQ.1) PWS=PWS+P(I,4)
+ IF(MOD(MSTJ(3),5).EQ.2) PWS=PWS+SQRT(P(I,5)**2+(PSI(1)*P(I,1)+
+ & PSI(2)*P(I,2)+PSI(3)*P(I,3))**2/PSI(4))
+ IF(MOD(MSTJ(3),5).EQ.3) PWS=PWS+1D0
+ 350 CONTINUE
+ DO 370 I=NSAV+NJET+1,N
+ IF(MOD(MSTJ(3),5).EQ.1) PW=P(I,4)
+ IF(MOD(MSTJ(3),5).EQ.2) PW=SQRT(P(I,5)**2+(PSI(1)*P(I,1)+
+ & PSI(2)*P(I,2)+PSI(3)*P(I,3))**2/PSI(4))
+ IF(MOD(MSTJ(3),5).EQ.3) PW=1D0
+ DO 360 J=1,3
+ P(I,J)=P(I,J)-PSI(J)*PW/PWS
+ 360 CONTINUE
+ P(I,4)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ 370 CONTINUE
+
+C...Compensate for missing momentum withing each jet separately.
+ ELSEIF(MOD(MSTJ(3),5).EQ.4) THEN
+ DO 390 I=N+1,N+NJET
+ K(I,1)=0
+ DO 380 J=1,5
+ P(I,J)=0D0
+ 380 CONTINUE
+ 390 CONTINUE
+ DO 410 I=NSAV+NJET+1,N
+ IR1=K(I,3)
+ IR2=N+IR1-NSAV
+ K(IR2,1)=K(IR2,1)+1
+ PLS=(P(I,1)*P(IR1,1)+P(I,2)*P(IR1,2)+P(I,3)*P(IR1,3))/
+ & (P(IR1,1)**2+P(IR1,2)**2+P(IR1,3)**2)
+ DO 400 J=1,3
+ P(IR2,J)=P(IR2,J)+P(I,J)-PLS*P(IR1,J)
+ 400 CONTINUE
+ P(IR2,4)=P(IR2,4)+P(I,4)
+ P(IR2,5)=P(IR2,5)+PLS
+ 410 CONTINUE
+ PSS=0D0
+ DO 420 I=N+1,N+NJET
+ IF(K(I,1).NE.0) PSS=PSS+P(I,4)/(PECM*(0.8D0*P(I,5)+0.2D0))
+ 420 CONTINUE
+ DO 440 I=NSAV+NJET+1,N
+ IR1=K(I,3)
+ IR2=N+IR1-NSAV
+ PLS=(P(I,1)*P(IR1,1)+P(I,2)*P(IR1,2)+P(I,3)*P(IR1,3))/
+ & (P(IR1,1)**2+P(IR1,2)**2+P(IR1,3)**2)
+ DO 430 J=1,3
+ P(I,J)=P(I,J)-P(IR2,J)/K(IR2,1)+(1D0/(P(IR2,5)*PSS)-1D0)*
+ & PLS*P(IR1,J)
+ 430 CONTINUE
+ P(I,4)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ 440 CONTINUE
+ ENDIF
+
+C...Scale momenta for energy conservation.
+ IF(MOD(MSTJ(3),5).NE.0) THEN
+ PMS=0D0
+ PES=0D0
+ PQS=0D0
+ DO 450 I=NSAV+NJET+1,N
+ PMS=PMS+P(I,5)
+ PES=PES+P(I,4)
+ PQS=PQS+P(I,5)**2/P(I,4)
+ 450 CONTINUE
+ IF(PMS.GE.PECM) GOTO 150
+ NECO=0
+ 460 NECO=NECO+1
+ PFAC=(PECM-PQS)/(PES-PQS)
+ PES=0D0
+ PQS=0D0
+ DO 480 I=NSAV+NJET+1,N
+ DO 470 J=1,3
+ P(I,J)=PFAC*P(I,J)
+ 470 CONTINUE
+ P(I,4)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2+P(I,5)**2)
+ PES=PES+P(I,4)
+ PQS=PQS+P(I,5)**2/P(I,4)
+ 480 CONTINUE
+ IF(NECO.LT.10.AND.ABS(PECM-PES).GT.2D-6*PECM) GOTO 460
+ ENDIF
+
+C...Origin of produced particles and parton daughter pointers.
+ 490 DO 500 I=NSAV+NJET+1,N
+ IF(MSTU(16).NE.2) K(I,3)=NSAV+1
+ IF(MSTU(16).EQ.2) K(I,3)=K(K(I,3),3)
+ 500 CONTINUE
+ DO 510 I=NSAV+1,NSAV+NJET
+ I1=K(I,3)
+ K(I1,1)=K(I1,1)+10
+ IF(MSTU(16).NE.2) THEN
+ K(I1,4)=NSAV+1
+ K(I1,5)=NSAV+1
+ ELSE
+ K(I1,4)=K(I1,4)-NJET+1
+ K(I1,5)=K(I1,5)-NJET+1
+ IF(K(I1,5).LT.K(I1,4)) THEN
+ K(I1,4)=0
+ K(I1,5)=0
+ ENDIF
+ ENDIF
+ 510 CONTINUE
+
+C...Document independent fragmentation system. Remove copy of jets.
+ NSAV=NSAV+1
+ K(NSAV,1)=11
+ K(NSAV,2)=93
+ K(NSAV,3)=IP
+ K(NSAV,4)=NSAV+1
+ K(NSAV,5)=N-NJET+1
+ DO 520 J=1,4
+ P(NSAV,J)=DPS(J)
+ V(NSAV,J)=V(IP,J)
+ 520 CONTINUE
+ P(NSAV,5)=SQRT(MAX(0D0,DPS(4)**2-DPS(1)**2-DPS(2)**2-DPS(3)**2))
+ V(NSAV,5)=0D0
+ DO 540 I=NSAV+NJET,N
+ DO 530 J=1,5
+ K(I-NJET+1,J)=K(I,J)
+ P(I-NJET+1,J)=P(I,J)
+ V(I-NJET+1,J)=V(I,J)
+ 530 CONTINUE
+ 540 CONTINUE
+ N=N-NJET+1
+ DO 550 IZ=MSTU90+1,MSTU(90)
+ MSTU(90+IZ)=MSTU(90+IZ)-NJET+1
+ 550 CONTINUE
+
+C...Boost back particle system. Set production vertices.
+ IF(NJET.NE.1) CALL PYROBO(NSAV+1,N,0D0,0D0,DPS(1)/DPS(4),
+ &DPS(2)/DPS(4),DPS(3)/DPS(4))
+ DO 570 I=NSAV+1,N
+ DO 560 J=1,4
+ V(I,J)=V(IP,J)
+ 560 CONTINUE
+ 570 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYDECY
+C...Handles the decay of unstable particles.
+
+ SUBROUTINE PYDECY(IP)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/
+C...Local arrays.
+ DIMENSION VDCY(4),KFLO(4),KFL1(4),PV(10,5),RORD(10),UE(3),BE(3),
+ &WTCOR(10),PTAU(4),PCMTAU(4),DBETAU(3)
+ CHARACTER CIDC*4
+ DATA WTCOR/2D0,5D0,15D0,60D0,250D0,1500D0,1.2D4,1.2D5,150D0,16D0/
+
+C...Functions: momentum in two-particle decays and four-product.
+ PAWT(A,B,C)=SQRT((A**2-(B+C)**2)*(A**2-(B-C)**2))/(2D0*A)
+ FOUR(I,J)=P(I,4)*P(J,4)-P(I,1)*P(J,1)-P(I,2)*P(J,2)-P(I,3)*P(J,3)
+
+C...Initial values.
+ NTRY=0
+ NSAV=N
+ KFA=IABS(K(IP,2))
+ KFS=ISIGN(1,K(IP,2))
+ KC=PYCOMP(KFA)
+ MSTJ(92)=0
+
+C...Choose lifetime and determine decay vertex.
+ IF(K(IP,1).EQ.5) THEN
+ V(IP,5)=0D0
+ ELSEIF(K(IP,1).NE.4) THEN
+ V(IP,5)=-PMAS(KC,4)*LOG(PYR(0))
+ ENDIF
+ DO 100 J=1,4
+ VDCY(J)=V(IP,J)+V(IP,5)*P(IP,J)/P(IP,5)
+ 100 CONTINUE
+
+C...Determine whether decay allowed or not.
+ MOUT=0
+ IF(MSTJ(22).EQ.2) THEN
+ IF(PMAS(KC,4).GT.PARJ(71)) MOUT=1
+ ELSEIF(MSTJ(22).EQ.3) THEN
+ IF(VDCY(1)**2+VDCY(2)**2+VDCY(3)**2.GT.PARJ(72)**2) MOUT=1
+ ELSEIF(MSTJ(22).EQ.4) THEN
+ IF(VDCY(1)**2+VDCY(2)**2.GT.PARJ(73)**2) MOUT=1
+ IF(ABS(VDCY(3)).GT.PARJ(74)) MOUT=1
+ ENDIF
+ IF(MOUT.EQ.1.AND.K(IP,1).NE.5) THEN
+ K(IP,1)=4
+ RETURN
+ ENDIF
+
+C...Interface to external tau decay library (for tau polarization).
+ IF(KFA.EQ.15.AND.MSTJ(28).GE.1) THEN
+
+C...Starting values for pointers and momenta.
+ ITAU=IP
+ DO 110 J=1,4
+ PTAU(J)=P(ITAU,J)
+ PCMTAU(J)=P(ITAU,J)
+ 110 CONTINUE
+
+C...Iterate to find position and code of mother of tau.
+ IMTAU=ITAU
+ 120 IMTAU=K(IMTAU,3)
+
+ IF(IMTAU.EQ.0) THEN
+C...If no known origin then impossible to do anything further.
+ KFORIG=0
+ IORIG=0
+
+ ELSEIF(K(IMTAU,2).EQ.K(ITAU,2)) THEN
+C...If tau -> tau + gamma then add gamma energy and loop.
+ IF(K(K(IMTAU,4),2).EQ.22) THEN
+ DO 130 J=1,4
+ PCMTAU(J)=PCMTAU(J)+P(K(IMTAU,4),J)
+ 130 CONTINUE
+ ELSEIF(K(K(IMTAU,5),2).EQ.22) THEN
+ DO 140 J=1,4
+ PCMTAU(J)=PCMTAU(J)+P(K(IMTAU,5),J)
+ 140 CONTINUE
+ ENDIF
+ GOTO 120
+
+ ELSEIF(IABS(K(IMTAU,2)).GT.100) THEN
+C...If coming from weak decay of hadron then W is not stored in record,
+C...but can be reconstructed by adding neutrino momentum.
+ KFORIG=-ISIGN(24,K(ITAU,2))
+ IORIG=0
+ DO 160 II=K(IMTAU,4),K(IMTAU,5)
+ IF(K(II,2)*ISIGN(1,K(ITAU,2)).EQ.-16) THEN
+ DO 150 J=1,4
+ PCMTAU(J)=PCMTAU(J)+P(II,J)
+ 150 CONTINUE
+ ENDIF
+ 160 CONTINUE
+
+ ELSE
+C...If coming from resonance decay then find latest copy of this
+C...resonance (may not completely agree).
+ KFORIG=K(IMTAU,2)
+ IORIG=IMTAU
+ DO 170 II=IMTAU+1,IP-1
+ IF(K(II,2).EQ.KFORIG.AND.K(II,3).EQ.IORIG.AND.
+ & ABS(P(II,5)-P(IORIG,5)).LT.1D-5*P(IORIG,5)) IORIG=II
+ 170 CONTINUE
+ DO 180 J=1,4
+ PCMTAU(J)=P(IORIG,J)
+ 180 CONTINUE
+ ENDIF
+
+C...Boost tau to rest frame of production process (where known)
+C...and rotate it to sit along +z axis.
+ DO 190 J=1,3
+ DBETAU(J)=PCMTAU(J)/PCMTAU(4)
+ 190 CONTINUE
+ IF(KFORIG.NE.0) CALL PYROBO(ITAU,ITAU,0D0,0D0,-DBETAU(1),
+ & -DBETAU(2),-DBETAU(3))
+ PHITAU=PYANGL(P(ITAU,1),P(ITAU,2))
+ CALL PYROBO(ITAU,ITAU,0D0,-PHITAU,0D0,0D0,0D0)
+ THETAU=PYANGL(P(ITAU,3),P(ITAU,1))
+ CALL PYROBO(ITAU,ITAU,-THETAU,0D0,0D0,0D0,0D0)
+
+C...Call tau decay routine (if meaningful) and fill extra info.
+ IF(KFORIG.NE.0.OR.MSTJ(28).EQ.2) THEN
+ CALL PYTAUD(ITAU,IORIG,KFORIG,NDECAY)
+ DO 200 II=NSAV+1,NSAV+NDECAY
+ K(II,1)=1
+ K(II,3)=IP
+ K(II,4)=0
+ K(II,5)=0
+ 200 CONTINUE
+ N=NSAV+NDECAY
+ ENDIF
+
+C...Boost back decay tau and decay products.
+ DO 210 J=1,4
+ P(ITAU,J)=PTAU(J)
+ 210 CONTINUE
+ IF(KFORIG.NE.0.OR.MSTJ(28).EQ.2) THEN
+ CALL PYROBO(NSAV+1,N,THETAU,PHITAU,0D0,0D0,0D0)
+ IF(KFORIG.NE.0) CALL PYROBO(NSAV+1,N,0D0,0D0,DBETAU(1),
+ & DBETAU(2),DBETAU(3))
+
+C...Skip past ordinary tau decay treatment.
+ MMAT=0
+ MBST=0
+ ND=0
+ GOTO 630
+ ENDIF
+ ENDIF
+
+C...B-Bbar mixing: flip sign of meson appropriately.
+ MMIX=0
+ IF((KFA.EQ.511.OR.KFA.EQ.531).AND.MSTJ(26).GE.1) THEN
+ XBBMIX=PARJ(76)
+ IF(KFA.EQ.531) XBBMIX=PARJ(77)
+ IF(SIN(0.5D0*XBBMIX*V(IP,5)/PMAS(KC,4))**2.GT.PYR(0)) MMIX=1
+ IF(MMIX.EQ.1) KFS=-KFS
+ ENDIF
+
+C...Check existence of decay channels. Particle/antiparticle rules.
+ KCA=KC
+ IF(MDCY(KC,2).GT.0) THEN
+ MDMDCY=MDME(MDCY(KC,2),2)
+ IF(MDMDCY.GT.80.AND.MDMDCY.LE.90) KCA=MDMDCY
+ ENDIF
+ IF(MDCY(KCA,2).LE.0.OR.MDCY(KCA,3).LE.0) THEN
+ CALL PYERRM(9,'(PYDECY:) no decay channel defined')
+ RETURN
+ ENDIF
+ IF(MOD(KFA/1000,10).EQ.0.AND.KCA.EQ.85) KFS=-KFS
+ IF(KCHG(KC,3).EQ.0) THEN
+ KFSP=1
+ KFSN=0
+ IF(PYR(0).GT.0.5D0) KFS=-KFS
+ ELSEIF(KFS.GT.0) THEN
+ KFSP=1
+ KFSN=0
+ ELSE
+ KFSP=0
+ KFSN=1
+ ENDIF
+
+C...Sum branching ratios of allowed decay channels.
+ 220 NOPE=0
+ BRSU=0D0
+ DO 230 IDL=MDCY(KCA,2),MDCY(KCA,2)+MDCY(KCA,3)-1
+ IF(MDME(IDL,1).NE.1.AND.KFSP*MDME(IDL,1).NE.2.AND.
+ & KFSN*MDME(IDL,1).NE.3) GOTO 230
+ IF(MDME(IDL,2).GT.100) GOTO 230
+ NOPE=NOPE+1
+ BRSU=BRSU+BRAT(IDL)
+ 230 CONTINUE
+ IF(NOPE.EQ.0) THEN
+ CALL PYERRM(2,'(PYDECY:) all decay channels closed by user')
+ RETURN
+ ENDIF
+
+C...Select decay channel among allowed ones.
+ 240 RBR=BRSU*PYR(0)
+ IDL=MDCY(KCA,2)-1
+ 250 IDL=IDL+1
+ IF(MDME(IDL,1).NE.1.AND.KFSP*MDME(IDL,1).NE.2.AND.
+ &KFSN*MDME(IDL,1).NE.3) THEN
+ IF(IDL.LT.MDCY(KCA,2)+MDCY(KCA,3)-1) GOTO 250
+ ELSEIF(MDME(IDL,2).GT.100) THEN
+ IF(IDL.LT.MDCY(KCA,2)+MDCY(KCA,3)-1) GOTO 250
+ ELSE
+ IDC=IDL
+ RBR=RBR-BRAT(IDL)
+ IF(IDL.LT.MDCY(KCA,2)+MDCY(KCA,3)-1.AND.RBR.GT.0D0) GOTO 250
+ ENDIF
+
+C...Start readout of decay channel: matrix element, reset counters.
+ MMAT=MDME(IDC,2)
+ 260 NTRY=NTRY+1
+ IF(MOD(NTRY,200).EQ.0) THEN
+ WRITE(CIDC,'(I4)') IDC
+C...Do not print warning for some well-known special cases.
+ IF(KFA.NE.113.AND.KFA.NE.115.AND.KFA.NE.215)
+ & CALL PYERRM(4,'(PYDECY:) caught in loop for decay channel'//
+ & CIDC)
+ GOTO 240
+ ENDIF
+ IF(NTRY.GT.1000) THEN
+ CALL PYERRM(14,'(PYDECY:) caught in infinite loop')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ I=N
+ NP=0
+ NQ=0
+ MBST=0
+ IF(MMAT.GE.11.AND.P(IP,4).GT.20D0*P(IP,5)) MBST=1
+ DO 270 J=1,4
+ PV(1,J)=0D0
+ IF(MBST.EQ.0) PV(1,J)=P(IP,J)
+ 270 CONTINUE
+ IF(MBST.EQ.1) PV(1,4)=P(IP,5)
+ PV(1,5)=P(IP,5)
+ PS=0D0
+ PSQ=0D0
+ MREM=0
+ MHADDY=0
+ IF(KFA.GT.80) MHADDY=1
+C.. Random flavour and popcorn system memory.
+ IRNDMO=0
+ JTMO=0
+ MSTU(121)=0
+ MSTU(125)=10
+
+C...Read out decay products. Convert to standard flavour code.
+ JTMAX=5
+ IF(MDME(IDC+1,2).EQ.101) JTMAX=10
+ DO 280 JT=1,JTMAX
+ IF(JT.LE.5) KP=KFDP(IDC,JT)
+ IF(JT.GE.6) KP=KFDP(IDC+1,JT-5)
+ IF(KP.EQ.0) GOTO 280
+ KPA=IABS(KP)
+ KCP=PYCOMP(KPA)
+ IF(KPA.GT.80) MHADDY=1
+ IF(KCHG(KCP,3).EQ.0.AND.KPA.NE.81.AND.KPA.NE.82) THEN
+ KFP=KP
+ ELSEIF(KPA.NE.81.AND.KPA.NE.82) THEN
+ KFP=KFS*KP
+ ELSEIF(KPA.EQ.81.AND.MOD(KFA/1000,10).EQ.0) THEN
+ KFP=-KFS*MOD(KFA/10,10)
+ ELSEIF(KPA.EQ.81.AND.MOD(KFA/100,10).GE.MOD(KFA/10,10)) THEN
+ KFP=KFS*(100*MOD(KFA/10,100)+3)
+ ELSEIF(KPA.EQ.81) THEN
+ KFP=KFS*(1000*MOD(KFA/10,10)+100*MOD(KFA/100,10)+1)
+ ELSEIF(KP.EQ.82) THEN
+ CALL PYDCYK(-KFS*INT(1D0+(2D0+PARJ(2))*PYR(0)),0,KFP,KDUMP)
+ IF(KFP.EQ.0) GOTO 260
+ KFP=-KFP
+ IRNDMO=1
+ MSTJ(93)=1
+ IF(PV(1,5).LT.PARJ(32)+2D0*PYMASS(KFP)) GOTO 260
+ ELSEIF(KP.EQ.-82) THEN
+ KFP=MSTU(124)
+ ENDIF
+ IF(KPA.EQ.81.OR.KPA.EQ.82) KCP=PYCOMP(KFP)
+
+C...Add decay product to event record or to quark flavour list.
+ KFPA=IABS(KFP)
+ KQP=KCHG(KCP,2)
+ IF(MMAT.GE.11.AND.MMAT.LE.30.AND.KQP.NE.0) THEN
+ NQ=NQ+1
+ KFLO(NQ)=KFP
+C...set rndmflav popcorn system pointer
+ IF(KP.EQ.82.AND.MSTU(121).GT.0) JTMO=NQ
+ MSTJ(93)=2
+ PSQ=PSQ+PYMASS(KFLO(NQ))
+ ELSEIF((MMAT.EQ.42.OR.MMAT.EQ.43.OR.MMAT.EQ.48).AND.NP.EQ.3.AND.
+ & MOD(NQ,2).EQ.1) THEN
+ NQ=NQ-1
+ PS=PS-P(I,5)
+ K(I,1)=1
+ KFI=K(I,2)
+ CALL PYKFDI(KFP,KFI,KFLDMP,K(I,2))
+ IF(K(I,2).EQ.0) GOTO 260
+ MSTJ(93)=1
+ P(I,5)=PYMASS(K(I,2))
+ PS=PS+P(I,5)
+ ELSE
+ I=I+1
+ NP=NP+1
+ IF(MMAT.NE.33.AND.KQP.NE.0) NQ=NQ+1
+ IF(MMAT.EQ.33.AND.KQP.NE.0.AND.KQP.NE.2) NQ=NQ+1
+ K(I,1)=1+MOD(NQ,2)
+ IF(MMAT.EQ.4.AND.JT.LE.2.AND.KFP.EQ.21) K(I,1)=2
+ IF(MMAT.EQ.4.AND.JT.EQ.3) K(I,1)=1
+ K(I,2)=KFP
+ K(I,3)=IP
+ K(I,4)=0
+ K(I,5)=0
+ P(I,5)=PYMASS(KFP)
+ PS=PS+P(I,5)
+ ENDIF
+ 280 CONTINUE
+
+C...Check masses for resonance decays.
+ IF(MHADDY.EQ.0) THEN
+ IF(PS+PARJ(64).GT.PV(1,5)) GOTO 240
+ ENDIF
+
+C...Choose decay multiplicity in phase space model.
+ 290 IF(MMAT.GE.11.AND.MMAT.LE.30) THEN
+ PSP=PS
+ CNDE=PARJ(61)*LOG(MAX((PV(1,5)-PS-PSQ)/PARJ(62),1.1D0))
+ IF(MMAT.EQ.12) CNDE=CNDE+PARJ(63)
+ 300 NTRY=NTRY+1
+C...Reset popcorn flags if new attempt. Re-select rndmflav if failed.
+ IF(IRNDMO.EQ.0) THEN
+ MSTU(121)=0
+ JTMO=0
+ ELSEIF(IRNDMO.EQ.1) THEN
+ IRNDMO=2
+ ELSE
+ GOTO 260
+ ENDIF
+ IF(NTRY.GT.1000) THEN
+ CALL PYERRM(14,'(PYDECY:) caught in infinite loop')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IF(MMAT.LE.20) THEN
+ GAUSS=SQRT(-2D0*CNDE*LOG(MAX(1D-10,PYR(0))))*
+ & SIN(PARU(2)*PYR(0))
+ ND=0.5D0+0.5D0*NP+0.25D0*NQ+CNDE+GAUSS
+ IF(ND.LT.NP+NQ/2.OR.ND.LT.2.OR.ND.GT.10) GOTO 300
+ IF(MMAT.EQ.13.AND.ND.EQ.2) GOTO 300
+ IF(MMAT.EQ.14.AND.ND.LE.3) GOTO 300
+ IF(MMAT.EQ.15.AND.ND.LE.4) GOTO 300
+ ELSE
+ ND=MMAT-20
+ ENDIF
+C.. Set maximum popcorn meson number. Test rndmflav popcorn size.
+ MSTU(125)=ND-NQ/2
+ IF(MSTU(121).GT.MSTU(125)) GOTO 300
+
+C...Form hadrons from flavour content.
+ DO 310 JT=1,NQ
+ KFL1(JT)=KFLO(JT)
+ 310 CONTINUE
+ IF(ND.EQ.NP+NQ/2) GOTO 330
+ DO 320 I=N+NP+1,N+ND-NQ/2
+C.. Stick to started popcorn system, else pick side at random
+ JT=JTMO
+ IF(JT.EQ.0) JT=1+INT((NQ-1)*PYR(0))
+ CALL PYDCYK(KFL1(JT),0,KFL2,K(I,2))
+ IF(K(I,2).EQ.0) GOTO 300
+ MSTU(125)=MSTU(125)-1
+ JTMO=0
+ IF(MSTU(121).GT.0) JTMO=JT
+ KFL1(JT)=-KFL2
+ 320 CONTINUE
+ 330 JT=2
+ JT2=3
+ JT3=4
+ IF(NQ.EQ.4.AND.PYR(0).LT.PARJ(66)) JT=4
+ IF(JT.EQ.4.AND.ISIGN(1,KFL1(1)*(10-IABS(KFL1(1))))*
+ & ISIGN(1,KFL1(JT)*(10-IABS(KFL1(JT)))).GT.0) JT=3
+ IF(JT.EQ.3) JT2=2
+ IF(JT.EQ.4) JT3=2
+ CALL PYDCYK(KFL1(1),KFL1(JT),KFLDMP,K(N+ND-NQ/2+1,2))
+ IF(K(N+ND-NQ/2+1,2).EQ.0) GOTO 300
+ IF(NQ.EQ.4) CALL PYDCYK(KFL1(JT2),KFL1(JT3),KFLDMP,K(N+ND,2))
+ IF(NQ.EQ.4.AND.K(N+ND,2).EQ.0) GOTO 300
+
+C...Check that sum of decay product masses not too large.
+ PS=PSP
+ DO 340 I=N+NP+1,N+ND
+ K(I,1)=1
+ K(I,3)=IP
+ K(I,4)=0
+ K(I,5)=0
+ P(I,5)=PYMASS(K(I,2))
+ PS=PS+P(I,5)
+ 340 CONTINUE
+ IF(PS+PARJ(64).GT.PV(1,5)) GOTO 300
+
+C...Rescale energy to subtract off spectator quark mass.
+ ELSEIF((MMAT.EQ.31.OR.MMAT.EQ.33.OR.MMAT.EQ.44)
+ & .AND.NP.GE.3) THEN
+ PS=PS-P(N+NP,5)
+ PQT=(P(N+NP,5)+PARJ(65))/PV(1,5)
+ DO 350 J=1,5
+ P(N+NP,J)=PQT*PV(1,J)
+ PV(1,J)=(1D0-PQT)*PV(1,J)
+ 350 CONTINUE
+ IF(PS+PARJ(64).GT.PV(1,5)) GOTO 260
+ ND=NP-1
+ MREM=1
+
+C...Fully specified final state: check mass broadening effects.
+ ELSE
+ IF(NP.GE.2.AND.PS+PARJ(64).GT.PV(1,5)) GOTO 260
+ ND=NP
+ ENDIF
+
+C...Determine position of grandmother, number of sisters.
+ NM=0
+ KFAS=0
+ MSGN=0
+ IF(MMAT.EQ.3) THEN
+ IM=K(IP,3)
+ IF(IM.LT.0.OR.IM.GE.IP) IM=0
+ IF(IM.NE.0) KFAM=IABS(K(IM,2))
+ IF(IM.NE.0) THEN
+ DO 360 IL=MAX(IP-2,IM+1),MIN(IP+2,N)
+ IF(K(IL,3).EQ.IM) NM=NM+1
+ IF(K(IL,3).EQ.IM.AND.IL.NE.IP) ISIS=IL
+ 360 CONTINUE
+ IF(NM.NE.2.OR.KFAM.LE.100.OR.MOD(KFAM,10).NE.1.OR.
+ & MOD(KFAM/1000,10).NE.0) NM=0
+ IF(NM.EQ.2) THEN
+ KFAS=IABS(K(ISIS,2))
+ IF((KFAS.LE.100.OR.MOD(KFAS,10).NE.1.OR.
+ & MOD(KFAS/1000,10).NE.0).AND.KFAS.NE.22) NM=0
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...Kinematics of one-particle decays.
+ IF(ND.EQ.1) THEN
+ DO 370 J=1,4
+ P(N+1,J)=P(IP,J)
+ 370 CONTINUE
+ GOTO 630
+ ENDIF
+
+C...Calculate maximum weight ND-particle decay.
+ PV(ND,5)=P(N+ND,5)
+ IF(ND.GE.3) THEN
+ WTMAX=1D0/WTCOR(ND-2)
+ PMAX=PV(1,5)-PS+P(N+ND,5)
+ PMIN=0D0
+ DO 380 IL=ND-1,1,-1
+ PMAX=PMAX+P(N+IL,5)
+ PMIN=PMIN+P(N+IL+1,5)
+ WTMAX=WTMAX*PAWT(PMAX,PMIN,P(N+IL,5))
+ 380 CONTINUE
+ ENDIF
+
+C...Find virtual gamma mass in Dalitz decay.
+ 390 IF(ND.EQ.2) THEN
+ ELSEIF(MMAT.EQ.2) THEN
+ PMES=4D0*PMAS(11,1)**2
+ PMRHO2=PMAS(131,1)**2
+ PGRHO2=PMAS(131,2)**2
+ 400 PMST=PMES*(P(IP,5)**2/PMES)**PYR(0)
+ WT=(1+0.5D0*PMES/PMST)*SQRT(MAX(0D0,1D0-PMES/PMST))*
+ & (1D0-PMST/P(IP,5)**2)**3*(1D0+PGRHO2/PMRHO2)/
+ & ((1D0-PMST/PMRHO2)**2+PGRHO2/PMRHO2)
+ IF(WT.LT.PYR(0)) GOTO 400
+ PV(2,5)=MAX(2.00001D0*PMAS(11,1),SQRT(PMST))
+
+C...M-generator gives weight. If rejected, try again.
+ ELSE
+ 410 RORD(1)=1D0
+ DO 440 IL1=2,ND-1
+ RSAV=PYR(0)
+ DO 420 IL2=IL1-1,1,-1
+ IF(RSAV.LE.RORD(IL2)) GOTO 430
+ RORD(IL2+1)=RORD(IL2)
+ 420 CONTINUE
+ 430 RORD(IL2+1)=RSAV
+ 440 CONTINUE
+ RORD(ND)=0D0
+ WT=1D0
+ DO 450 IL=ND-1,1,-1
+ PV(IL,5)=PV(IL+1,5)+P(N+IL,5)+(RORD(IL)-RORD(IL+1))*
+ & (PV(1,5)-PS)
+ WT=WT*PAWT(PV(IL,5),PV(IL+1,5),P(N+IL,5))
+ 450 CONTINUE
+ IF(WT.LT.PYR(0)*WTMAX) GOTO 410
+ ENDIF
+
+C...Perform two-particle decays in respective CM frame.
+ 460 DO 480 IL=1,ND-1
+ PA=PAWT(PV(IL,5),PV(IL+1,5),P(N+IL,5))
+ UE(3)=2D0*PYR(0)-1D0
+ PHI=PARU(2)*PYR(0)
+ UE(1)=SQRT(1D0-UE(3)**2)*COS(PHI)
+ UE(2)=SQRT(1D0-UE(3)**2)*SIN(PHI)
+ DO 470 J=1,3
+ P(N+IL,J)=PA*UE(J)
+ PV(IL+1,J)=-PA*UE(J)
+ 470 CONTINUE
+ P(N+IL,4)=SQRT(PA**2+P(N+IL,5)**2)
+ PV(IL+1,4)=SQRT(PA**2+PV(IL+1,5)**2)
+ 480 CONTINUE
+
+C...Lorentz transform decay products to lab frame.
+ DO 490 J=1,4
+ P(N+ND,J)=PV(ND,J)
+ 490 CONTINUE
+ DO 530 IL=ND-1,1,-1
+ DO 500 J=1,3
+ BE(J)=PV(IL,J)/PV(IL,4)
+ 500 CONTINUE
+ GA=PV(IL,4)/PV(IL,5)
+ DO 520 I=N+IL,N+ND
+ BEP=BE(1)*P(I,1)+BE(2)*P(I,2)+BE(3)*P(I,3)
+ DO 510 J=1,3
+ P(I,J)=P(I,J)+GA*(GA*BEP/(1D0+GA)+P(I,4))*BE(J)
+ 510 CONTINUE
+ P(I,4)=GA*(P(I,4)+BEP)
+ 520 CONTINUE
+ 530 CONTINUE
+
+C...Check that no infinite loop in matrix element weight.
+ NTRY=NTRY+1
+ IF(NTRY.GT.800) GOTO 560
+
+C...Matrix elements for omega and phi decays.
+ IF(MMAT.EQ.1) THEN
+ WT=(P(N+1,5)*P(N+2,5)*P(N+3,5))**2-(P(N+1,5)*FOUR(N+2,N+3))**2
+ & -(P(N+2,5)*FOUR(N+1,N+3))**2-(P(N+3,5)*FOUR(N+1,N+2))**2
+ & +2D0*FOUR(N+1,N+2)*FOUR(N+1,N+3)*FOUR(N+2,N+3)
+ IF(MAX(WT*WTCOR(9)/P(IP,5)**6,0.001D0).LT.PYR(0)) GOTO 390
+
+C...Matrix elements for pi0 or eta Dalitz decay to gamma e+ e-.
+ ELSEIF(MMAT.EQ.2) THEN
+ FOUR12=FOUR(N+1,N+2)
+ FOUR13=FOUR(N+1,N+3)
+ WT=(PMST-0.5D0*PMES)*(FOUR12**2+FOUR13**2)+
+ & PMES*(FOUR12*FOUR13+FOUR12**2+FOUR13**2)
+ IF(WT.LT.PYR(0)*0.25D0*PMST*(P(IP,5)**2-PMST)**2) GOTO 460
+
+C...Matrix element for S0 -> S1 + V1 -> S1 + S2 + S3 (S scalar,
+C...V vector), of form cos**2(theta02) in V1 rest frame, and for
+C...S0 -> gamma + V1 -> gamma + S2 + S3, of form sin**2(theta02).
+ ELSEIF(MMAT.EQ.3.AND.NM.EQ.2) THEN
+ FOUR10=FOUR(IP,IM)
+ FOUR12=FOUR(IP,N+1)
+ FOUR02=FOUR(IM,N+1)
+ PMS1=P(IP,5)**2
+ PMS0=P(IM,5)**2
+ PMS2=P(N+1,5)**2
+ IF(KFAS.NE.22) HNUM=(FOUR10*FOUR12-PMS1*FOUR02)**2
+ IF(KFAS.EQ.22) HNUM=PMS1*(2D0*FOUR10*FOUR12*FOUR02-
+ & PMS1*FOUR02**2-PMS0*FOUR12**2-PMS2*FOUR10**2+PMS1*PMS0*PMS2)
+ HNUM=MAX(1D-6*PMS1**2*PMS0*PMS2,HNUM)
+ HDEN=(FOUR10**2-PMS1*PMS0)*(FOUR12**2-PMS1*PMS2)
+ IF(HNUM.LT.PYR(0)*HDEN) GOTO 460
+
+C...Matrix element for "onium" -> g + g + g or gamma + g + g.
+ ELSEIF(MMAT.EQ.4) THEN
+ HX1=2D0*FOUR(IP,N+1)/P(IP,5)**2
+ HX2=2D0*FOUR(IP,N+2)/P(IP,5)**2
+ HX3=2D0*FOUR(IP,N+3)/P(IP,5)**2
+ WT=((1D0-HX1)/(HX2*HX3))**2+((1D0-HX2)/(HX1*HX3))**2+
+ & ((1D0-HX3)/(HX1*HX2))**2
+ IF(WT.LT.2D0*PYR(0)) GOTO 390
+ IF(K(IP+1,2).EQ.22.AND.(1D0-HX1)*P(IP,5)**2.LT.4D0*PARJ(32)**2)
+ & GOTO 390
+
+C...Effective matrix element for nu spectrum in tau -> nu + hadrons.
+ ELSEIF(MMAT.EQ.41) THEN
+ IF(MBST.EQ.0) HX1=2D0*FOUR(IP,N+1)/P(IP,5)**2
+ IF(MBST.EQ.1) HX1=2D0*P(N+1,4)/P(IP,5)
+ HXM=MIN(0.75D0,2D0*(1D0-PS/P(IP,5)))
+ IF(HX1*(3D0-2D0*HX1).LT.PYR(0)*HXM*(3D0-2D0*HXM)) GOTO 390
+
+C...Matrix elements for weak decays (only semileptonic for c and b)
+ ELSEIF((MMAT.EQ.42.OR.MMAT.EQ.43.OR.MMAT.EQ.44.OR.MMAT.EQ.48)
+ & .AND.ND.EQ.3) THEN
+ IF(MBST.EQ.0) WT=FOUR(IP,N+1)*FOUR(N+2,N+3)
+ IF(MBST.EQ.1) WT=P(IP,5)*P(N+1,4)*FOUR(N+2,N+3)
+ IF(WT.LT.PYR(0)*P(IP,5)*PV(1,5)**3/WTCOR(10)) GOTO 390
+ ELSEIF(MMAT.EQ.42.OR.MMAT.EQ.43.OR.MMAT.EQ.44.OR.MMAT.EQ.48) THEN
+ DO 550 J=1,4
+ P(N+NP+1,J)=0D0
+ DO 540 IS=N+3,N+NP
+ P(N+NP+1,J)=P(N+NP+1,J)+P(IS,J)
+ 540 CONTINUE
+ 550 CONTINUE
+ IF(MBST.EQ.0) WT=FOUR(IP,N+1)*FOUR(N+2,N+NP+1)
+ IF(MBST.EQ.1) WT=P(IP,5)*P(N+1,4)*FOUR(N+2,N+NP+1)
+ IF(WT.LT.PYR(0)*P(IP,5)*PV(1,5)**3/WTCOR(10)) GOTO 390
+ ENDIF
+
+C...Scale back energy and reattach spectator.
+ 560 IF(MREM.EQ.1) THEN
+ DO 570 J=1,5
+ PV(1,J)=PV(1,J)/(1D0-PQT)
+ 570 CONTINUE
+ ND=ND+1
+ MREM=0
+ ENDIF
+
+C...Low invariant mass for system with spectator quark gives particle,
+C...not two jets. Readjust momenta accordingly.
+ IF(MMAT.EQ.31.AND.ND.EQ.3) THEN
+ MSTJ(93)=1
+ PM2=PYMASS(K(N+2,2))
+ MSTJ(93)=1
+ PM3=PYMASS(K(N+3,2))
+ IF(P(N+2,5)**2+P(N+3,5)**2+2D0*FOUR(N+2,N+3).GE.
+ & (PARJ(32)+PM2+PM3)**2) GOTO 630
+ K(N+2,1)=1
+ KFTEMP=K(N+2,2)
+ CALL PYKFDI(KFTEMP,K(N+3,2),KFLDMP,K(N+2,2))
+ IF(K(N+2,2).EQ.0) GOTO 260
+ P(N+2,5)=PYMASS(K(N+2,2))
+ PS=P(N+1,5)+P(N+2,5)
+ PV(2,5)=P(N+2,5)
+ MMAT=0
+ ND=2
+ GOTO 460
+ ELSEIF(MMAT.EQ.44) THEN
+ MSTJ(93)=1
+ PM3=PYMASS(K(N+3,2))
+ MSTJ(93)=1
+ PM4=PYMASS(K(N+4,2))
+ IF(P(N+3,5)**2+P(N+4,5)**2+2D0*FOUR(N+3,N+4).GE.
+ & (PARJ(32)+PM3+PM4)**2) GOTO 600
+ K(N+3,1)=1
+ KFTEMP=K(N+3,2)
+ CALL PYKFDI(KFTEMP,K(N+4,2),KFLDMP,K(N+3,2))
+ IF(K(N+3,2).EQ.0) GOTO 260
+ P(N+3,5)=PYMASS(K(N+3,2))
+ DO 580 J=1,3
+ P(N+3,J)=P(N+3,J)+P(N+4,J)
+ 580 CONTINUE
+ P(N+3,4)=SQRT(P(N+3,1)**2+P(N+3,2)**2+P(N+3,3)**2+P(N+3,5)**2)
+ HA=P(N+1,4)**2-P(N+2,4)**2
+ HB=HA-(P(N+1,5)**2-P(N+2,5)**2)
+ HC=(P(N+1,1)-P(N+2,1))**2+(P(N+1,2)-P(N+2,2))**2+
+ & (P(N+1,3)-P(N+2,3))**2
+ HD=(PV(1,4)-P(N+3,4))**2
+ HE=HA**2-2D0*HD*(P(N+1,4)**2+P(N+2,4)**2)+HD**2
+ HF=HD*HC-HB**2
+ HG=HD*HC-HA*HB
+ HH=(SQRT(HG**2+HE*HF)-HG)/(2D0*HF)
+ DO 590 J=1,3
+ PCOR=HH*(P(N+1,J)-P(N+2,J))
+ P(N+1,J)=P(N+1,J)+PCOR
+ P(N+2,J)=P(N+2,J)-PCOR
+ 590 CONTINUE
+ P(N+1,4)=SQRT(P(N+1,1)**2+P(N+1,2)**2+P(N+1,3)**2+P(N+1,5)**2)
+ P(N+2,4)=SQRT(P(N+2,1)**2+P(N+2,2)**2+P(N+2,3)**2+P(N+2,5)**2)
+ ND=ND-1
+ ENDIF
+
+C...Check invariant mass of W jets. May give one particle or start over.
+ 600 IF((MMAT.EQ.42.OR.MMAT.EQ.43.OR.MMAT.EQ.44.OR.MMAT.EQ.48)
+ &.AND.IABS(K(N+1,2)).LT.10) THEN
+ PMR=SQRT(MAX(0D0,P(N+1,5)**2+P(N+2,5)**2+2D0*FOUR(N+1,N+2)))
+ MSTJ(93)=1
+ PM1=PYMASS(K(N+1,2))
+ MSTJ(93)=1
+ PM2=PYMASS(K(N+2,2))
+ IF(PMR.GT.PARJ(32)+PM1+PM2) GOTO 610
+ KFLDUM=INT(1.5D0+PYR(0))
+ CALL PYKFDI(K(N+1,2),-ISIGN(KFLDUM,K(N+1,2)),KFLDMP,KF1)
+ CALL PYKFDI(K(N+2,2),-ISIGN(KFLDUM,K(N+2,2)),KFLDMP,KF2)
+ IF(KF1.EQ.0.OR.KF2.EQ.0) GOTO 260
+ PSM=PYMASS(KF1)+PYMASS(KF2)
+ IF((MMAT.EQ.42.OR.MMAT.EQ.48).AND.PMR.GT.PARJ(64)+PSM) GOTO 610
+ IF(MMAT.GE.43.AND.PMR.GT.0.2D0*PARJ(32)+PSM) GOTO 610
+ IF(MMAT.EQ.48) GOTO 390
+ IF(ND.EQ.4.OR.KFA.EQ.15) GOTO 260
+ K(N+1,1)=1
+ KFTEMP=K(N+1,2)
+ CALL PYKFDI(KFTEMP,K(N+2,2),KFLDMP,K(N+1,2))
+ IF(K(N+1,2).EQ.0) GOTO 260
+ P(N+1,5)=PYMASS(K(N+1,2))
+ K(N+2,2)=K(N+3,2)
+ P(N+2,5)=P(N+3,5)
+ PS=P(N+1,5)+P(N+2,5)
+ IF(PS+PARJ(64).GT.PV(1,5)) GOTO 260
+ PV(2,5)=P(N+3,5)
+ MMAT=0
+ ND=2
+ GOTO 460
+ ENDIF
+
+C...Phase space decay of partons from W decay.
+ 610 IF((MMAT.EQ.42.OR.MMAT.EQ.48).AND.IABS(K(N+1,2)).LT.10) THEN
+ KFLO(1)=K(N+1,2)
+ KFLO(2)=K(N+2,2)
+ K(N+1,1)=K(N+3,1)
+ K(N+1,2)=K(N+3,2)
+ DO 620 J=1,5
+ PV(1,J)=P(N+1,J)+P(N+2,J)
+ P(N+1,J)=P(N+3,J)
+ 620 CONTINUE
+ PV(1,5)=PMR
+ N=N+1
+ NP=0
+ NQ=2
+ PS=0D0
+ MSTJ(93)=2
+ PSQ=PYMASS(KFLO(1))
+ MSTJ(93)=2
+ PSQ=PSQ+PYMASS(KFLO(2))
+ MMAT=11
+ GOTO 290
+ ENDIF
+
+C...Boost back for rapidly moving particle.
+ 630 N=N+ND
+ IF(MBST.EQ.1) THEN
+ DO 640 J=1,3
+ BE(J)=P(IP,J)/P(IP,4)
+ 640 CONTINUE
+ GA=P(IP,4)/P(IP,5)
+ DO 660 I=NSAV+1,N
+ BEP=BE(1)*P(I,1)+BE(2)*P(I,2)+BE(3)*P(I,3)
+ DO 650 J=1,3
+ P(I,J)=P(I,J)+GA*(GA*BEP/(1D0+GA)+P(I,4))*BE(J)
+ 650 CONTINUE
+ P(I,4)=GA*(P(I,4)+BEP)
+ 660 CONTINUE
+ ENDIF
+
+C...Fill in position of decay vertex.
+ DO 680 I=NSAV+1,N
+ DO 670 J=1,4
+ V(I,J)=VDCY(J)
+ 670 CONTINUE
+ V(I,5)=0D0
+ 680 CONTINUE
+
+C...Set up for parton shower evolution from jets.
+ IF(MSTJ(23).GE.1.AND.MMAT.EQ.4.AND.K(NSAV+1,2).EQ.21) THEN
+ K(NSAV+1,1)=3
+ K(NSAV+2,1)=3
+ K(NSAV+3,1)=3
+ K(NSAV+1,4)=MSTU(5)*(NSAV+2)
+ K(NSAV+1,5)=MSTU(5)*(NSAV+3)
+ K(NSAV+2,4)=MSTU(5)*(NSAV+3)
+ K(NSAV+2,5)=MSTU(5)*(NSAV+1)
+ K(NSAV+3,4)=MSTU(5)*(NSAV+1)
+ K(NSAV+3,5)=MSTU(5)*(NSAV+2)
+ MSTJ(92)=-(NSAV+1)
+ ELSEIF(MSTJ(23).GE.1.AND.MMAT.EQ.4) THEN
+ K(NSAV+2,1)=3
+ K(NSAV+3,1)=3
+ K(NSAV+2,4)=MSTU(5)*(NSAV+3)
+ K(NSAV+2,5)=MSTU(5)*(NSAV+3)
+ K(NSAV+3,4)=MSTU(5)*(NSAV+2)
+ K(NSAV+3,5)=MSTU(5)*(NSAV+2)
+ MSTJ(92)=NSAV+2
+ ELSEIF(MSTJ(23).GE.1.AND.(MMAT.EQ.32.OR.MMAT.EQ.44).AND.
+ & IABS(K(NSAV+1,2)).LE.10.AND.IABS(K(NSAV+2,2)).LE.10) THEN
+ K(NSAV+1,1)=3
+ K(NSAV+2,1)=3
+ K(NSAV+1,4)=MSTU(5)*(NSAV+2)
+ K(NSAV+1,5)=MSTU(5)*(NSAV+2)
+ K(NSAV+2,4)=MSTU(5)*(NSAV+1)
+ K(NSAV+2,5)=MSTU(5)*(NSAV+1)
+ MSTJ(92)=NSAV+1
+ ELSEIF(MSTJ(23).GE.1.AND.(MMAT.EQ.32.OR.MMAT.EQ.44).AND.
+ & IABS(K(NSAV+1,2)).LE.20.AND.IABS(K(NSAV+2,2)).LE.20) THEN
+ MSTJ(92)=NSAV+1
+ ELSEIF(MSTJ(23).GE.1.AND.MMAT.EQ.33.AND.IABS(K(NSAV+2,2)).EQ.21)
+ & THEN
+ K(NSAV+1,1)=3
+ K(NSAV+2,1)=3
+ K(NSAV+3,1)=3
+ KCP=PYCOMP(K(NSAV+1,2))
+ KQP=KCHG(KCP,2)*ISIGN(1,K(NSAV+1,2))
+ JCON=4
+ IF(KQP.LT.0) JCON=5
+ K(NSAV+1,JCON)=MSTU(5)*(NSAV+2)
+ K(NSAV+2,9-JCON)=MSTU(5)*(NSAV+1)
+ K(NSAV+2,JCON)=MSTU(5)*(NSAV+3)
+ K(NSAV+3,9-JCON)=MSTU(5)*(NSAV+2)
+ MSTJ(92)=NSAV+1
+ ELSEIF(MSTJ(23).GE.1.AND.MMAT.EQ.33) THEN
+ K(NSAV+1,1)=3
+ K(NSAV+3,1)=3
+ K(NSAV+1,4)=MSTU(5)*(NSAV+3)
+ K(NSAV+1,5)=MSTU(5)*(NSAV+3)
+ K(NSAV+3,4)=MSTU(5)*(NSAV+1)
+ K(NSAV+3,5)=MSTU(5)*(NSAV+1)
+ MSTJ(92)=NSAV+1
+ ENDIF
+
+C...Mark decayed particle; special option for B-Bbar mixing.
+ IF(K(IP,1).EQ.5) K(IP,1)=15
+ IF(K(IP,1).LE.10) K(IP,1)=11
+ IF(MMIX.EQ.1.AND.MSTJ(26).EQ.2.AND.K(IP,1).EQ.11) K(IP,1)=12
+ K(IP,4)=NSAV+1
+ K(IP,5)=N
+
+ RETURN
+ END
+
+
+C*********************************************************************
+
+C...PYDCYK
+C...Handles flavour production in the decay of unstable particles
+C...and small string clusters.
+
+ SUBROUTINE PYDCYK(KFL1,KFL2,KFL3,KF)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+
+C.. Call PYKFDI directly if no popcorn option is on
+ IF(MSTJ(12).LT.2) THEN
+ CALL PYKFDI(KFL1,KFL2,KFL3,KF)
+ MSTU(124)=KFL3
+ RETURN
+ ENDIF
+
+ KFL3=0
+ KF=0
+ IF(KFL1.EQ.0) RETURN
+ KF1A=IABS(KFL1)
+ KF2A=IABS(KFL2)
+
+ NSTO=130
+ NMAX=MIN(MSTU(125),10)
+
+C.. Identify rank 0 cluster qq
+ IRANK=1
+ IF(KF1A.GT.10.AND.KF1A.LT.10000) IRANK=0
+
+ IF(KF2A.GT.0)THEN
+C.. Join jets: Fails if store not empty
+ IF(MSTU(121).GT.0) THEN
+ MSTU(121)=0
+ RETURN
+ ENDIF
+ CALL PYKFDI(KFL1,KFL2,KFL3,KF)
+ ELSEIF(KF1A.GT.10.AND.MSTU(121).GT.0)THEN
+C.. Pick popcorn meson from store, return same qq, decrease store
+ KF=MSTU(NSTO+MSTU(121))
+ KFL3=-KFL1
+ MSTU(121)=MSTU(121)-1
+ ELSE
+C.. Generate new flavour. Then done if no diquark is generated
+ 100 CALL PYKFDI(KFL1,0,KFL3,KF)
+ IF(MSTU(121).EQ.-1) GOTO 100
+ MSTU(124)=KFL3
+ IF(KF.EQ.0.OR.IABS(KFL3).LE.10) RETURN
+
+C.. Simple case if no dynamical popcorn suppressions are considered
+ IF(MSTJ(12).LT.4) THEN
+ IF(MSTU(121).EQ.0) RETURN
+ NMES=1
+ KFPREV=-KFL3
+ CALL PYKFDI(KFPREV,0,KFL3,KFM)
+C.. Due to eta+eta' suppr., a qq->M+qq attempt might end as qq->B+q
+ IF(IABS(KFL3).LE.10)THEN
+ KFL3=-KFPREV
+ RETURN
+ ENDIF
+ GOTO 120
+ ENDIF
+
+C test output qq against fake Gamma, then return if no popcorn.
+ GB=2D0
+ IF(IRANK.NE.0)THEN
+ CALL PYZDIS(1,2103,5D0,Z)
+ GB=5D0*(1D0-Z)/Z
+ IF(1D0-PARF(192)**GB.LT.PYR(0)) THEN
+ MSTU(121)=0
+ GOTO 100
+ ENDIF
+ ENDIF
+ IF(MSTU(121).EQ.0) RETURN
+
+C..Set store size memory. Pick fake dynamical variables of qq.
+ NMES=MSTU(121)
+ CALL PYPTDI(1,PX3,PY3)
+ X=1D0
+ POPM=0D0
+ G=GB
+ POPG=GB
+
+C.. Pick next popcorn meson, test with fake dynamical variables
+ 110 KFPREV=-KFL3
+ PX1=-PX3
+ PY1=-PY3
+ CALL PYKFDI(KFPREV,0,KFL3,KFM)
+ IF(MSTU(121).EQ.-1) GOTO 100
+ CALL PYPTDI(KFL3,PX3,PY3)
+ PM=PYMASS(KFM)**2+(PX1+PX3)**2+(PY1+PY3)**2
+ CALL PYZDIS(KFPREV,KFL3,PM,Z)
+ G=(1D0-Z)*(G+PM/Z)
+ X=(1D0-Z)*X
+
+ PTST=1D0
+ GTST=1D0
+ RTST=PYR(0)
+ IF(MSTJ(12).GT.4)THEN
+ POPMN=SQRT((1D0-X)*(G/X-GB))
+ POPM=POPM+PMAS(PYCOMP(KFM),1)-PMAS(PYCOMP(KFM),3)
+ PTST=EXP((POPM-POPMN)*PARF(193))
+ POPM=POPMN
+ ENDIF
+ IF(IRANK.NE.0)THEN
+ POPGN=X*GB
+ GTST=(1D0-PARF(192)**POPGN)/(1D0-PARF(192)**POPG)
+ POPG=POPGN
+ ENDIF
+ IF(RTST.GT.PTST*GTST)THEN
+ MSTU(121)=0
+ IF(RTST.GT.PTST) MSTU(121)=-1
+ GOTO 100
+ ENDIF
+
+C.. Store meson
+ 120 IF(NMES.LE.NMAX) MSTU(NSTO+MSTU(121)+1)=KFM
+ IF(MSTU(121).GT.0) GOTO 110
+
+C.. Test accepted system size. If OK set global popcorn size variable.
+ IF(NMES.GT.NMAX)THEN
+ KF=0
+ KFL3=0
+ RETURN
+ ENDIF
+ MSTU(121)=NMES
+ ENDIF
+
+ RETURN
+ END
+
+C********************************************************************
+
+C...PYKFDI
+C...Generates a new flavour pair and combines off a hadron
+
+ SUBROUTINE PYKFDI(KFL1,KFL2,KFL3,KF)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+C...Local arrays.
+ DIMENSION PD(7)
+
+ IF(MSTU(123).EQ.0.AND.MSTJ(12).GE.0) CALL PYKFIN
+
+C...Default flavour values. Input consistency checks.
+ KF1A=IABS(KFL1)
+ KF2A=IABS(KFL2)
+ KFL3=0
+ KF=0
+ IF(KF1A.EQ.0) RETURN
+ IF(KF2A.NE.0)THEN
+ IF(KF1A.LE.10.AND.KF2A.LE.10.AND.KFL1*KFL2.GT.0) RETURN
+ IF(KF1A.GT.10.AND.KF2A.GT.10) RETURN
+ IF((KF1A.GT.10.OR.KF2A.GT.10).AND.KFL1*KFL2.LT.0) RETURN
+ ENDIF
+
+C...Check if tabulated flavour probabilities are to be used.
+ IF(MSTJ(15).EQ.1) THEN
+ IF(MSTJ(12).GE.5) CALL PYERRM(29,
+ & '(PYKFDI:) Sorry, option MSTJ(15)=1 not available' //
+ & ' together with MSTJ(12)>=5 modification')
+ KTAB1=-1
+ IF(KF1A.GE.1.AND.KF1A.LE.6) KTAB1=KF1A
+ KFL1A=MOD(KF1A/1000,10)
+ KFL1B=MOD(KF1A/100,10)
+ KFL1S=MOD(KF1A,10)
+ IF(KFL1A.GE.1.AND.KFL1A.LE.4.AND.KFL1B.GE.1.AND.KFL1B.LE.4)
+ & KTAB1=6+KFL1A*(KFL1A-2)+2*KFL1B+(KFL1S-1)/2
+ IF(KFL1A.GE.1.AND.KFL1A.LE.4.AND.KFL1A.EQ.KFL1B) KTAB1=KTAB1-1
+ IF(KF1A.GE.1.AND.KF1A.LE.6) KFL1A=KF1A
+ KTAB2=0
+ IF(KF2A.NE.0) THEN
+ KTAB2=-1
+ IF(KF2A.GE.1.AND.KF2A.LE.6) KTAB2=KF2A
+ KFL2A=MOD(KF2A/1000,10)
+ KFL2B=MOD(KF2A/100,10)
+ KFL2S=MOD(KF2A,10)
+ IF(KFL2A.GE.1.AND.KFL2A.LE.4.AND.KFL2B.GE.1.AND.KFL2B.LE.4)
+ & KTAB2=6+KFL2A*(KFL2A-2)+2*KFL2B+(KFL2S-1)/2
+ IF(KFL2A.GE.1.AND.KFL2A.LE.4.AND.KFL2A.EQ.KFL2B) KTAB2=KTAB2-1
+ ENDIF
+ IF(KTAB1.GE.0.AND.KTAB2.GE.0) GOTO 140
+ ENDIF
+
+C.. Recognize rank 0 diquark case
+ 100 IRANK=1
+ KFDIQ=MAX(KF1A,KF2A)
+ IF(KFDIQ.GT.10.AND.KFDIQ.LT.10000) IRANK=0
+
+C.. Join two flavours to meson or baryon. Test for popcorn.
+ IF(KF2A.GT.0)THEN
+ MBARY=0
+ IF(KFDIQ.GT.10) THEN
+ IF(IRANK.EQ.0.AND.MSTJ(12).LT.5)
+ & CALL PYNMES(KFDIQ)
+ IF(MSTU(121).NE.0) THEN
+ MSTU(121)=0
+ RETURN
+ ENDIF
+ MBARY=2
+ ENDIF
+ KFQOLD=KF1A
+ KFQVER=KF2A
+ GOTO 130
+ ENDIF
+
+C.. Separate incoming flavours, curtain flavour consistency check
+ KFIN=KFL1
+ KFQOLD=KF1A
+ KFQPOP=KF1A/10000
+ IF(KF1A.GT.10)THEN
+ KFIN=-KFL1
+ KFL1A=MOD(KF1A/1000,10)
+ KFL1B=MOD(KF1A/100,10)
+ IF(IRANK.EQ.0)THEN
+ QAWT=1D0
+ IF(KFL1A.GE.3) QAWT=PARF(136+KFL1A/4)
+ IF(KFL1B.GE.3) QAWT=QAWT/PARF(136+KFL1B/4)
+ KFQPOP=KFL1A+(KFL1B-KFL1A)*INT(1D0/(QAWT+1D0)+PYR(0))
+ ENDIF
+ IF(KFQPOP.NE.KFL1B.AND.KFQPOP.NE.KFL1A) THEN
+ MSTU(121)=0
+ RETURN
+ ENDIF
+ KFQOLD=KFL1A+KFL1B-KFQPOP
+ ENDIF
+
+C...Meson/baryon choice. Set number of mesons if starting a popcorn
+C...system.
+ 110 MBARY=0
+ IF(KF1A.LE.10.AND.MSTJ(12).GT.0)THEN
+ IF(MSTU(121).EQ.-1.OR.(1D0+PARJ(1))*PYR(0).GT.1D0)THEN
+ MBARY=1
+ CALL PYNMES(0)
+ ENDIF
+ ELSEIF(KF1A.GT.10)THEN
+ MBARY=2
+ IF(IRANK.EQ.0) CALL PYNMES(KF1A)
+ IF(MSTU(121).GT.0) MBARY=-1
+ ENDIF
+
+C..x->H+q: Choose single vertex quark. Jump to form hadron.
+ IF(MBARY.EQ.0.OR.MBARY.EQ.2)THEN
+ KFQVER=1+INT((2D0+PARJ(2))*PYR(0))
+ KFL3=ISIGN(KFQVER,-KFIN)
+ GOTO 130
+ ENDIF
+
+C..x->H+qq: (IDW=proper PARF position for diquark weights)
+ IDW=160
+ IF(MBARY.EQ.1)THEN
+ IF(MSTU(121).EQ.0) IDW=150
+ SQWT=PARF(IDW+1)
+ IF(MSTU(121).GT.0) SQWT=SQWT*PARF(135)*PARF(138)**MSTU(121)
+ KFQPOP=1+INT((2D0+SQWT)*PYR(0))
+C.. Shift to s-curtain parameters if needed
+ IF(KFQPOP.GE.3.AND.MSTJ(12).GE.5)THEN
+ PARF(194)=PARF(138)*PARF(139)
+ PARF(193)=PARJ(8)+PARJ(9)
+ ENDIF
+ ENDIF
+
+C.. x->H+qq: Get vertex quark
+ IF(MBARY.EQ.-1.AND.MSTJ(12).GE.5)THEN
+ IDW=MSTU(122)
+ MSTU(121)=MSTU(121)-1
+ IF(IDW.EQ.170) THEN
+ IF(MSTU(121).EQ.0)THEN
+ IPOS=3*MIN(KFQPOP-1,2)+MIN(KFQOLD-1,2)
+ ELSE
+ IPOS=3*3+3*MAX(0,MIN(KFQPOP-2,1))+MIN(KFQOLD-1,2)
+ ENDIF
+ ELSE
+ IF(MSTU(121).EQ.0)THEN
+ IPOS=3*5+5*MIN(KFQPOP-1,3)+MIN(KFQOLD-1,4)
+ ELSE
+ IPOS=3*5+5*4+MIN(KFQOLD-1,4)
+ ENDIF
+ ENDIF
+ IPOS=200+30*IPOS+1
+
+ IMES=-1
+ RMES=PYR(0)*PARF(194)
+ 120 IMES=IMES+1
+ RMES=RMES-PARF(IPOS+IMES)
+ IF(IMES.EQ.30) THEN
+ MSTU(121)=-1
+ KF=-111
+ RETURN
+ ENDIF
+ IF(RMES.GT.0D0) GOTO 120
+ KMUL=IMES/5
+ KFJ=2*KMUL+1
+ IF(KMUL.EQ.2) KFJ=10003
+ IF(KMUL.EQ.3) KFJ=10001
+ IF(KMUL.EQ.4) KFJ=20003
+ IF(KMUL.EQ.5) KFJ=5
+ IDIAG=0
+ KFQVER=MOD(IMES,5)+1
+ IF(KFQVER.GE.KFQOLD) KFQVER=KFQVER+1
+ IF(KFQVER.GT.3)THEN
+ IDIAG=KFQVER-3
+ KFQVER=KFQOLD
+ ENDIF
+ ELSE
+ IF(MBARY.EQ.-1) IDW=170
+ SQWT=PARF(IDW+2)
+ IF(KFQPOP.EQ.3) SQWT=PARF(IDW+3)
+ IF(KFQPOP.GT.3) SQWT=PARF(IDW+3)*(1D0/PARF(IDW+5)+1D0)/2D0
+ KFQVER=MIN(3,1+INT((2D0+SQWT)*PYR(0)))
+ IF(KFQPOP.LT.3.AND.KFQVER.LT.3)THEN
+ KFQVER=KFQPOP
+ IF(PYR(0).GT.PARF(IDW+4)) KFQVER=3-KFQPOP
+ ENDIF
+ ENDIF
+
+C..x->H+qq: form outgoing diquark with KFQPOP flag at 10000-pos
+ KFLDS=3
+ IF(KFQPOP.NE.KFQVER)THEN
+ SWT=PARF(IDW+7)
+ IF(KFQVER.EQ.3) SWT=PARF(IDW+6)
+ IF(KFQPOP.GE.3) SWT=PARF(IDW+5)
+ IF((1D0+SWT)*PYR(0).LT.1D0) KFLDS=1
+ ENDIF
+ KFDIQ=900*MAX(KFQVER,KFQPOP)+100*(KFQVER+KFQPOP)+KFLDS
+ & +10000*KFQPOP
+ KFL3=ISIGN(KFDIQ,KFIN)
+
+C..x->M+y: flavour for meson.
+ 130 IF(MBARY.LE.0)THEN
+ KFLA=MAX(KFQOLD,KFQVER)
+ KFLB=MIN(KFQOLD,KFQVER)
+ KFS=ISIGN(1,KFL1)
+ IF(KFLA.NE.KFQOLD) KFS=-KFS
+C... Form meson, with spin and flavour mixing for diagonal states.
+ IF(MBARY.EQ.-1.AND.MSTJ(12).GE.5)THEN
+ IF(IDIAG.GT.0) KF=110*IDIAG+KFJ
+ IF(IDIAG.EQ.0) KF=(100*KFLA+10*KFLB+KFJ)*KFS*(-1)**KFLA
+ RETURN
+ ENDIF
+ IF(KFLA.LE.2) KMUL=INT(PARJ(11)+PYR(0))
+ IF(KFLA.EQ.3) KMUL=INT(PARJ(12)+PYR(0))
+ IF(KFLA.GE.4) KMUL=INT(PARJ(13)+PYR(0))
+ IF(KMUL.EQ.0.AND.PARJ(14).GT.0D0)THEN
+ IF(PYR(0).LT.PARJ(14)) KMUL=2
+ ELSEIF(KMUL.EQ.1.AND.PARJ(15)+PARJ(16)+PARJ(17).GT.0D0)THEN
+ RMUL=PYR(0)
+ IF(RMUL.LT.PARJ(15)) KMUL=3
+ IF(KMUL.EQ.1.AND.RMUL.LT.PARJ(15)+PARJ(16)) KMUL=4
+ IF(KMUL.EQ.1.AND.RMUL.LT.PARJ(15)+PARJ(16)+PARJ(17)) KMUL=5
+ ENDIF
+ KFLS=3
+ IF(KMUL.EQ.0.OR.KMUL.EQ.3) KFLS=1
+ IF(KMUL.EQ.5) KFLS=5
+ IF(KFLA.NE.KFLB)THEN
+ KF=(100*KFLA+10*KFLB+KFLS)*KFS*(-1)**KFLA
+ ELSE
+ RMIX=PYR(0)
+ IMIX=2*KFLA+10*KMUL
+ IF(KFLA.LE.3) KF=110*(1+INT(RMIX+PARF(IMIX-1))+
+ & INT(RMIX+PARF(IMIX)))+KFLS
+ IF(KFLA.GE.4) KF=110*KFLA+KFLS
+ ENDIF
+ IF(KMUL.EQ.2.OR.KMUL.EQ.3) KF=KF+ISIGN(10000,KF)
+ IF(KMUL.EQ.4) KF=KF+ISIGN(20000,KF)
+
+C..Optional extra suppression of eta and eta'.
+C..Allow shift to qq->B+q in old version (set IRANK to 0)
+ IF(KF.EQ.221.OR.KF.EQ.331)THEN
+ IF(PYR(0).GT.PARJ(25+KF/300))THEN
+ IF(KF2A.GT.0) GOTO 130
+ IF(MSTJ(12).LT.4) IRANK=0
+ GOTO 110
+ ENDIF
+ ENDIF
+ MSTU(121)=0
+
+C.. x->B+y: Flavour for baryon
+ ELSE
+ KFLA=KFQVER
+ IF(KF1A.LE.10) KFLA=KFQOLD
+ KFLB=MOD(KFDIQ/1000,10)
+ KFLC=MOD(KFDIQ/100,10)
+ KFLDS=MOD(KFDIQ,10)
+ KFLD=MAX(KFLA,KFLB,KFLC)
+ KFLF=MIN(KFLA,KFLB,KFLC)
+ KFLE=KFLA+KFLB+KFLC-KFLD-KFLF
+
+C... SU(6) factors for formation of baryon.
+ KBARY=3
+ KDMAX=5
+ KFLG=KFLB
+ IF(KFLB.NE.KFLC)THEN
+ KBARY=2*KFLDS-1
+ KDMAX=1+KFLDS/2
+ IF(KFLB.GT.2) KDMAX=KDMAX+2
+ ENDIF
+ IF(KFLA.NE.KFLB.AND.KFLA.NE.KFLC)THEN
+ KBARY=KBARY+1
+ KFLG=KFLA
+ ENDIF
+
+ SU6MAX=PARF(140+KDMAX)
+ SU6DEC=PARJ(18)
+ SU6S =PARF(146)
+ IF(MSTJ(12).GE.5.AND.IRANK.EQ.0) THEN
+ SU6MAX=1D0
+ SU6DEC=1D0
+ SU6S =1D0
+ ENDIF
+ SU6OCT=PARF(60+KBARY)
+ IF(KFLG.GT.MAX(KFLA+KFLB-KFLG,2))THEN
+ SU6OCT=SU6OCT*4*SU6S/(3*SU6S+1)
+ IF(KBARY.EQ.2) SU6OCT=PARF(60+KBARY)*4/(3*SU6S+1)
+ ELSE
+ IF(KBARY.EQ.6) SU6OCT=SU6OCT*(3+SU6S)/(3*SU6S+1)
+ ENDIF
+ SU6WT=SU6OCT+SU6DEC*PARF(70+KBARY)
+
+C.. SU(6) test. Old options enforce new baryon if q->B+qq is rejected.
+ IF(SU6WT.LT.PYR(0)*SU6MAX.AND.KF2A.EQ.0)THEN
+ MSTU(121)=0
+ IF(MSTJ(12).LE.2.AND.MBARY.EQ.1) MSTU(121)=-1
+ GOTO 110
+ ENDIF
+
+C.. Form baryon. Distinguish Lambda- and Sigmalike baryons.
+ KSIG=1
+ KFLS=2
+ IF(SU6WT*PYR(0).GT.SU6OCT) KFLS=4
+ IF(KFLS.EQ.2.AND.KFLD.GT.KFLE.AND.KFLE.GT.KFLF)THEN
+ KSIG=KFLDS/3
+ IF(KFLA.NE.KFLD) KSIG=INT(3*SU6S/(3*SU6S+KFLDS**2)+PYR(0))
+ ENDIF
+ KF=ISIGN(1000*KFLD+100*KFLE+10*KFLF+KFLS,KFL1)
+ IF(KSIG.EQ.0) KF=ISIGN(1000*KFLD+100*KFLF+10*KFLE+KFLS,KFL1)
+ ENDIF
+ RETURN
+
+C...Use tabulated probabilities to select new flavour and hadron.
+ 140 IF(KTAB2.EQ.0.AND.MSTJ(12).LE.0) THEN
+ KT3L=1
+ KT3U=6
+ ELSEIF(KTAB2.EQ.0.AND.KTAB1.GE.7.AND.MSTJ(12).LE.1) THEN
+ KT3L=1
+ KT3U=6
+ ELSEIF(KTAB2.EQ.0) THEN
+ KT3L=1
+ KT3U=22
+ ELSE
+ KT3L=KTAB2
+ KT3U=KTAB2
+ ENDIF
+ RFL=0D0
+ DO 160 KTS=0,2
+ DO 150 KT3=KT3L,KT3U
+ RFL=RFL+PARF(120+80*KTAB1+25*KTS+KT3)
+ 150 CONTINUE
+ 160 CONTINUE
+ RFL=PYR(0)*RFL
+ DO 180 KTS=0,2
+ KTABS=KTS
+ DO 170 KT3=KT3L,KT3U
+ KTAB3=KT3
+ RFL=RFL-PARF(120+80*KTAB1+25*KTS+KT3)
+ IF(RFL.LE.0D0) GOTO 190
+ 170 CONTINUE
+ 180 CONTINUE
+ 190 CONTINUE
+
+C...Reconstruct flavour of produced quark/diquark.
+ IF(KTAB3.LE.6) THEN
+ KFL3A=KTAB3
+ KFL3B=0
+ KFL3=ISIGN(KFL3A,KFL1*(2*KTAB1-13))
+ ELSE
+ KFL3A=1
+ IF(KTAB3.GE.8) KFL3A=2
+ IF(KTAB3.GE.11) KFL3A=3
+ IF(KTAB3.GE.16) KFL3A=4
+ KFL3B=(KTAB3-6-KFL3A*(KFL3A-2))/2
+ KFL3=1000*KFL3A+100*KFL3B+1
+ IF(KFL3A.EQ.KFL3B.OR.KTAB3.NE.6+KFL3A*(KFL3A-2)+2*KFL3B) KFL3=
+ & KFL3+2
+ KFL3=ISIGN(KFL3,KFL1*(13-2*KTAB1))
+ ENDIF
+
+C...Reconstruct meson code.
+ IF(KFL3A.EQ.KFL1A.AND.KFL3B.EQ.KFL1B.AND.(KFL3A.LE.3.OR.
+ &KFL3B.NE.0)) THEN
+ RFL=PYR(0)*(PARF(143+80*KTAB1+25*KTABS)+PARF(144+80*KTAB1+
+ & 25*KTABS)+PARF(145+80*KTAB1+25*KTABS))
+ KF=110+2*KTABS+1
+ IF(RFL.GT.PARF(143+80*KTAB1+25*KTABS)) KF=220+2*KTABS+1
+ IF(RFL.GT.PARF(143+80*KTAB1+25*KTABS)+PARF(144+80*KTAB1+
+ & 25*KTABS)) KF=330+2*KTABS+1
+ ELSEIF(KTAB1.LE.6.AND.KTAB3.LE.6) THEN
+ KFLA=MAX(KTAB1,KTAB3)
+ KFLB=MIN(KTAB1,KTAB3)
+ KFS=ISIGN(1,KFL1)
+ IF(KFLA.NE.KF1A) KFS=-KFS
+ KF=(100*KFLA+10*KFLB+2*KTABS+1)*KFS*(-1)**KFLA
+ ELSEIF(KTAB1.GE.7.AND.KTAB3.GE.7) THEN
+ KFS=ISIGN(1,KFL1)
+ IF(KFL1A.EQ.KFL3A) THEN
+ KFLA=MAX(KFL1B,KFL3B)
+ KFLB=MIN(KFL1B,KFL3B)
+ IF(KFLA.NE.KFL1B) KFS=-KFS
+ ELSEIF(KFL1A.EQ.KFL3B) THEN
+ KFLA=KFL3A
+ KFLB=KFL1B
+ KFS=-KFS
+ ELSEIF(KFL1B.EQ.KFL3A) THEN
+ KFLA=KFL1A
+ KFLB=KFL3B
+ ELSEIF(KFL1B.EQ.KFL3B) THEN
+ KFLA=MAX(KFL1A,KFL3A)
+ KFLB=MIN(KFL1A,KFL3A)
+ IF(KFLA.NE.KFL1A) KFS=-KFS
+ ELSE
+ CALL PYERRM(2,'(PYKFDI:) no matching flavours for qq -> qq')
+ GOTO 100
+ ENDIF
+ KF=(100*KFLA+10*KFLB+2*KTABS+1)*KFS*(-1)**KFLA
+
+C...Reconstruct baryon code.
+ ELSE
+ IF(KTAB1.GE.7) THEN
+ KFLA=KFL3A
+ KFLB=KFL1A
+ KFLC=KFL1B
+ ELSE
+ KFLA=KFL1A
+ KFLB=KFL3A
+ KFLC=KFL3B
+ ENDIF
+ KFLD=MAX(KFLA,KFLB,KFLC)
+ KFLF=MIN(KFLA,KFLB,KFLC)
+ KFLE=KFLA+KFLB+KFLC-KFLD-KFLF
+ IF(KTABS.EQ.0) KF=ISIGN(1000*KFLD+100*KFLF+10*KFLE+2,KFL1)
+ IF(KTABS.GE.1) KF=ISIGN(1000*KFLD+100*KFLE+10*KFLF+2*KTABS,KFL1)
+ ENDIF
+
+C...Check that constructed flavour code is an allowed one.
+ IF(KFL2.NE.0) KFL3=0
+ KC=PYCOMP(KF)
+ IF(KC.EQ.0) THEN
+ CALL PYERRM(2,'(PYKFDI:) user-defined flavour probabilities '//
+ & 'failed')
+ GOTO 100
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYNMES
+C...Generates number of popcorn mesons and stores some relevant
+C...parameters.
+
+ SUBROUTINE PYNMES(KFDIQ)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+ MSTU(121)=0
+ IF(MSTJ(12).LT.2) RETURN
+
+C..Old version: Get 1 or 0 popcorn mesons
+ IF(MSTJ(12).LT.5)THEN
+ POPWT=PARF(131)
+ IF(KFDIQ.NE.0) THEN
+ KFDIQA=IABS(KFDIQ)
+ KFA=MOD(KFDIQA/1000,10)
+ KFB=MOD(KFDIQA/100,10)
+ KFS=MOD(KFDIQA,10)
+ POPWT=PARF(132)
+ IF(KFA.EQ.3) POPWT=PARF(133)
+ IF(KFB.EQ.3) POPWT=PARF(134)
+ IF(KFS.EQ.1) POPWT=POPWT*SQRT(PARJ(4))
+ ENDIF
+ MSTU(121)=INT(POPWT/(1D0+POPWT)+PYR(0))
+ RETURN
+ ENDIF
+
+C..New version: Store popcorn- or rank 0 diquark parameters
+ MSTU(122)=170
+ PARF(193)=PARJ(8)
+ PARF(194)=PARF(139)
+ IF(KFDIQ.NE.0) THEN
+ MSTU(122)=180
+ PARF(193)=PARJ(10)
+ PARF(194)=PARF(140)
+ ENDIF
+ IF(PARF(194).LT.1D-5.OR.PARF(194).GT.1D0-1D-5) THEN
+ IF(PARF(194).GT.1D0-1D-5) CALL PYERRM(9,
+ & '(PYNMES:) Neglecting too large popcorn possibility')
+ RETURN
+ ENDIF
+
+C..New version: Get number of popcorn mesons
+ 100 RTST=PYR(0)
+ MSTU(121)=-1
+ 110 MSTU(121)=MSTU(121)+1
+ RTST=RTST/PARF(194)
+ IF(RTST.LT.1D0) GOTO 110
+ IF(KFDIQ.EQ.0.AND.PYR(0)*(2D0+PARF(135)*PARF(161)).GT.
+ & (2D0+PARF(135)*PARF(161)*PARF(138)**MSTU(121))) GOTO 100
+ RETURN
+ END
+
+C***************************************************************
+
+C...PYKFIN
+C...Precalculates a set of diquark and popcorn weights.
+
+ SUBROUTINE PYKFIN
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+ DIMENSION SU6(12),SU6M(7),QBB(7),QBM(7),DMB(14)
+
+
+ MSTU(123)=1
+C..Diquark indices for dimensional variables
+ IUD1=1
+ IUU1=2
+ IUS0=3
+ ISU0=4
+ IUS1=5
+ ISU1=6
+ ISS1=7
+
+C.. *** SU(6) factors **
+C..Modify with decuplet- (and Sigma/Lambda-) suppression.
+ PARF(146)=1D0
+ IF(MSTJ(12).GE.5) PARF(146)=3D0*PARJ(18)/(2D0*PARJ(18)+1D0)
+ IF(PARJ(18).LT.1D0-1D-5.AND.MSTJ(12).LT.5) CALL PYERRM(9,
+ & '(PYKFIN:) PARJ(18)<1 combined with 0<MSTJ(12)<5 option')
+ DO 100 I=1,6
+ SU6(I)=PARF(60+I)
+ SU6(6+I)=SU6(I)*4*PARF(146)/(3*PARF(146)+1)
+ 100 CONTINUE
+ SU6(8)=SU6(2)*4/(3*PARF(146)+1)
+ SU6(6)=SU6(6)*(3+PARF(146))/(3*PARF(146)+1)
+ DO 110 I=1,6
+ SU6(I)=SU6(I)+PARJ(18)*PARF(70+I)
+ SU6(6+I)=SU6(6+I)+PARJ(18)*PARF(70+I)
+ 110 CONTINUE
+
+C..SU(6)max q q' s,c,b
+ SU6MUD =MAX(SU6(1) , SU6(8) )
+ SU6M(IUD1)=MAX(SU6(5) , SU6(12))
+ SU6M(ISU0)=MAX(SU6(7) ,SU6(2),SU6MUD )
+ SU6M(IUU1)=MAX(SU6(3) ,SU6(4),SU6(10))
+ SU6M(ISU1)=MAX(SU6(11),SU6(6),SU6M(IUD1))
+ SU6M(IUS0)=SU6M(ISU0)
+ SU6M(ISS1)=SU6M(IUU1)
+ SU6M(IUS1)=SU6M(ISU1)
+
+C..Store SU(6)max, in order UD0,UD1,US0,US1,QQ1
+ PARF(141)=SU6MUD
+ PARF(142)=SU6M(IUD1)
+ PARF(143)=SU6M(ISU0)
+ PARF(144)=SU6M(ISU1)
+ PARF(145)=SU6M(ISS1)
+
+C..diquark SU(6) survival =
+C..sum over quark (quark tunnel weight)*(SU(6)).
+ PUD0=(2D0*SU6(1)+PARJ(2)*SU6(8))
+ DMB(ISU0)=(SU6(7)+SU6(2)+PARJ(2)*SU6(1))/PUD0
+ DMB(IUS0)=DMB(ISU0)
+ DMB(ISS1)=(2D0*SU6(4)+PARJ(2)*SU6(3))/PUD0
+ DMB(IUU1)=(SU6(3)+SU6(4)+PARJ(2)*SU6(10))/PUD0
+ DMB(ISU1)=(SU6(11)+SU6(6)+PARJ(2)*SU6(5))/PUD0
+ DMB(IUS1)=DMB(ISU1)
+ DMB(IUD1)=(2D0*SU6(5)+PARJ(2)*SU6(12))/PUD0
+
+C.. *** Tunneling factors for Diquark production***
+C.. T: half a curtain pair = sqrt(curtain pair factor)
+ IF(MSTJ(12).GE.5) THEN
+ PMUD0=PYMASS(2101)
+ PMUD1=PYMASS(2103)-PMUD0
+ PMUS0=PYMASS(3201)-PMUD0
+ PMUS1=PYMASS(3203)-PMUS0-PMUD0
+ PMSS1=PYMASS(3303)-PMUS0-PMUD0
+ QBB(ISU0)=EXP(-(PARJ(9)+PARJ(8))*PMUS0-PARJ(9)*PARF(191))
+ QBB(IUS0)=EXP(-PARJ(8)*PMUS0)
+ QBB(ISS1)=EXP(-(PARJ(9)+PARJ(8))*PMSS1)*QBB(ISU0)
+ QBB(IUU1)=EXP(-PARJ(8)*PMUD1)
+ QBB(ISU1)=EXP(-(PARJ(9)+PARJ(8))*PMUS1)*QBB(ISU0)
+ QBB(IUS1)=EXP(-PARJ(8)*PMUS1)*QBB(IUS0)
+ QBB(IUD1)=QBB(IUU1)
+ ELSE
+ PAR2M=SQRT(PARJ(2))
+ PAR3M=SQRT(PARJ(3))
+ PAR4M=SQRT(PARJ(4))
+ QBB(ISU0)=PAR2M*PAR3M
+ QBB(IUS0)=PAR3M
+ QBB(ISS1)=PAR2M*PARJ(3)*PAR4M
+ QBB(IUU1)=PAR4M
+ QBB(ISU1)=PAR4M*QBB(ISU0)
+ QBB(IUS1)=PAR4M*QBB(IUS0)
+ QBB(IUD1)=PAR4M
+ ENDIF
+
+C.. tau: spin*(vertex factor)*(T = half-curtain factor)
+ QBM(ISU0)=QBB(ISU0)
+ QBM(IUS0)=PARJ(2)*QBB(IUS0)
+ QBM(ISS1)=PARJ(2)*6D0*QBB(ISS1)
+ QBM(IUU1)=6D0*QBB(IUU1)
+ QBM(ISU1)=3D0*QBB(ISU1)
+ QBM(IUS1)=PARJ(2)*3D0*QBB(IUS1)
+ QBM(IUD1)=3D0*QBB(IUD1)
+
+C.. Combine T and tau to diquark weight for q-> B+B+..
+ DO 120 I=1,7
+ QBB(I)=QBB(I)*QBM(I)
+ 120 CONTINUE
+
+ IF(MSTJ(12).GE.5)THEN
+C..New version: tau for rank 0 diquark.
+ DMB(7+ISU0)=EXP(-PARJ(10)*PMUS0)
+ DMB(7+IUS0)=PARJ(2)*DMB(7+ISU0)
+ DMB(7+ISS1)=6D0*PARJ(2)*EXP(-PARJ(10)*PMSS1)*DMB(7+ISU0)
+ DMB(7+IUU1)=6D0*EXP(-PARJ(10)*PMUD1)
+ DMB(7+ISU1)=3D0*EXP(-PARJ(10)*PMUS1)*DMB(7+ISU0)
+ DMB(7+IUS1)=PARJ(2)*DMB(7+ISU1)
+ DMB(7+IUD1)=DMB(7+IUU1)/2D0
+
+C..New version: curtain flavour ratios.
+C.. s/u for q->B+M+...
+C.. s/u for rank 0 diquark: su -> ...M+B+...
+C.. Q/q for heavy rank 0 diquark: Qu -> ...M+B+...
+ WU=1D0+QBM(IUD1)+QBM(IUS0)+QBM(IUS1)+QBM(IUU1)
+ PARF(135)=(2D0*(QBM(ISU0)+QBM(ISU1))+QBM(ISS1))/WU
+ WU=1D0+DMB(7+IUD1)+DMB(7+IUS0)+DMB(7+IUS1)+DMB(7+IUU1)
+ PARF(136)=(2D0*(DMB(7+ISU0)+DMB(7+ISU1))+DMB(7+ISS1))/WU
+ PARF(137)=(DMB(7+ISU0)+DMB(7+ISU1))*
+ & (2D0+DMB(7+ISS1)/(2D0*DMB(7+ISU1)))/WU
+ ELSE
+C..Old version: reset unused rank 0 diquark weights and
+C.. unused diquark SU(6) survival weights
+ DO 130 I=1,7
+ IF(MSTJ(12).LT.3) DMB(I)=1D0
+ DMB(7+I)=1D0
+ 130 CONTINUE
+
+C..Old version: Shuffle PARJ(7) into tau
+ QBM(IUS0)=QBM(IUS0)*PARJ(7)
+ QBM(ISS1)=QBM(ISS1)*PARJ(7)
+ QBM(IUS1)=QBM(IUS1)*PARJ(7)
+
+C..Old version: curtain flavour ratios.
+C.. s/u for q->B+M+...
+C.. s/u for rank 0 diquark: su -> ...M+B+...
+C.. Q/q for heavy rank 0 diquark: Qu -> ...M+B+...
+ WU=1D0+QBM(IUD1)+QBM(IUS0)+QBM(IUS1)+QBM(IUU1)
+ PARF(135)=(2D0*(QBM(ISU0)+QBM(ISU1))+QBM(ISS1))/WU
+ PARF(136)=PARF(135)*PARJ(6)*QBM(ISU0)/QBM(IUS0)
+ PARF(137)=(1D0+QBM(IUD1))*(2D0+QBM(IUS0))/WU
+ ENDIF
+
+C..Combine diquark SU(6) survival, SU(6)max, tau and T into factors for:
+C.. rank0 D->M+B+..; D->M+B+..; q->B+M+..; q->B+B..
+ DO 140 I=1,7
+ DMB(7+I)=DMB(7+I)*DMB(I)
+ DMB(I)=DMB(I)*QBM(I)
+ QBM(I)=QBM(I)*SU6M(I)/SU6MUD
+ QBB(I)=QBB(I)*SU6M(I)/SU6MUD
+ 140 CONTINUE
+
+C.. *** Popcorn factors ***
+
+ IF(MSTJ(12).LT.5)THEN
+C.. Old version: Resulting popcorn weights.
+ PARF(138)=PARJ(6)
+ WS=PARF(135)*PARF(138)
+ WQ=WU*PARJ(5)/3D0
+ PARF(132)=WQ*QBM(IUD1)/QBB(IUD1)
+ PARF(133)=WQ*
+ & (QBM(IUS1)/QBB(IUS1)+WS*QBM(ISU1)/QBB(ISU1))/2D0
+ PARF(134)=WQ*WS*QBM(ISS1)/QBB(ISS1)
+ PARF(131)=WQ*(1D0+QBM(IUD1)+QBM(IUU1)+QBM(IUS0)+QBM(IUS1)+
+ & WS*(QBM(ISU0)+QBM(ISU1)+QBM(ISS1)/2D0))/
+ & (1D0+QBB(IUD1)+QBB(IUU1)+
+ & 2D0*(QBB(IUS0)+QBB(IUS1))+QBB(ISS1)/2D0)
+ ELSE
+C..New version: Store weights for popcorn mesons,
+C..get prel. popcorn weights.
+ DO 150 IPOS=201,1400
+ PARF(IPOS)=0D0
+ 150 CONTINUE
+ DO 160 I=138,140
+ PARF(I)=0D0
+ 160 CONTINUE
+ IPOS=200
+ PARF(193)=PARJ(8)
+ DO 240 MR=0,7,7
+ IF(MR.EQ.7) PARF(193)=PARJ(10)
+ SQWT=2D0*(DMB(MR+IUS0)+DMB(MR+IUS1))/
+ & (1D0+DMB(MR+IUD1)+DMB(MR+IUU1))
+ QQWT=DMB(MR+IUU1)/(1D0+DMB(MR+IUD1)+DMB(MR+IUU1))
+ DO 230 NMES=0,1
+ IF(NMES.EQ.1) SQWT=PARJ(2)
+ DO 220 KFQPOP=1,4
+ IF(MR.EQ.0.AND.KFQPOP.GT.3) GOTO 220
+ IF(NMES.EQ.0.AND.KFQPOP.GE.3)THEN
+ SQWT=DMB(MR+ISS1)/(DMB(MR+ISU0)+DMB(MR+ISU1))
+ QQWT=0.5D0
+ IF(MR.EQ.0) PARF(193)=PARJ(8)+PARJ(9)
+ IF(KFQPOP.EQ.4) SQWT=SQWT*(1D0/DMB(7+ISU1)+1D0)/2D0
+ ENDIF
+ DO 210 KFQOLD =1,5
+ IF(MR.EQ.0.AND.KFQOLD.GT.3) GOTO 210
+ IF(NMES.EQ.1) THEN
+ IF(MR.EQ.0.AND.KFQPOP.EQ.1) GOTO 210
+ IF(MR.EQ.7.AND.KFQPOP.NE.1) GOTO 210
+ ENDIF
+ WTTOT=0D0
+ WTFAIL=0D0
+ DO 190 KMUL=0,5
+ PJWT=PARJ(12+KMUL)
+ IF(KMUL.EQ.0) PJWT=1D0-PARJ(14)
+ IF(KMUL.EQ.1) PJWT=1D0-PARJ(15)-PARJ(16)-PARJ(17)
+ IF(PJWT.LE.0D0) GOTO 190
+ IF(PJWT.GT.1D0) PJWT=1D0
+ IMES=5*KMUL
+ IMIX=2*KFQOLD+10*KMUL
+ KFJ=2*KMUL+1
+ IF(KMUL.EQ.2) KFJ=10003
+ IF(KMUL.EQ.3) KFJ=10001
+ IF(KMUL.EQ.4) KFJ=20003
+ IF(KMUL.EQ.5) KFJ=5
+ DO 180 KFQVER =1,3
+ KFLA=MAX(KFQOLD,KFQVER)
+ KFLB=MIN(KFQOLD,KFQVER)
+ SWT=PARJ(11+KFLA/3+KFLA/4)
+ IF(KMUL.EQ.0.OR.KMUL.EQ.2) SWT=1D0-SWT
+ SWT=SWT*PJWT
+ QWT=SQWT/(2D0+SQWT)
+ IF(KFQVER.LT.3)THEN
+ IF(KFQVER.EQ.KFQPOP) QWT=(1D0-QWT)*QQWT
+ IF(KFQVER.NE.KFQPOP) QWT=(1D0-QWT)*(1D0-QQWT)
+ ENDIF
+ IF(KFQVER.NE.KFQOLD)THEN
+ IMES=IMES+1
+ KFM=100*KFLA+10*KFLB+KFJ
+ PMM=PMAS(PYCOMP(KFM),1)-PMAS(PYCOMP(KFM),3)
+ PARF(IPOS+IMES)=QWT*SWT*EXP(-PARF(193)*PMM)
+ WTTOT=WTTOT+PARF(IPOS+IMES)
+ ELSE
+ DO 170 ID=3,5
+ IF(ID.EQ.3) DWT=1D0-PARF(IMIX-1)
+ IF(ID.EQ.4) DWT=PARF(IMIX-1)-PARF(IMIX)
+ IF(ID.EQ.5) DWT=PARF(IMIX)
+ KFM=110*(ID-2)+KFJ
+ PMM=PMAS(PYCOMP(KFM),1)-PMAS(PYCOMP(KFM),3)
+ PARF(IPOS+5*KMUL+ID)=QWT*SWT*DWT*EXP(-PARF(193)*PMM)
+ IF(KMUL.EQ.0.AND.ID.GT.3) THEN
+ WTFAIL=WTFAIL+QWT*SWT*DWT*(1D0-PARJ(21+ID))
+ PARF(IPOS+5*KMUL+ID)=
+ & PARF(IPOS+5*KMUL+ID)*PARJ(21+ID)
+ ENDIF
+ WTTOT=WTTOT+PARF(IPOS+5*KMUL+ID)
+ 170 CONTINUE
+ ENDIF
+ 180 CONTINUE
+ 190 CONTINUE
+ DO 200 IMES=1,30
+ PARF(IPOS+IMES)=PARF(IPOS+IMES)/(1D0-WTFAIL)
+ 200 CONTINUE
+ IF(MR.EQ.7) PARF(140)=
+ & MAX(PARF(140),WTTOT/(1D0-WTFAIL))
+ IF(MR.EQ.0) PARF(139-KFQPOP/3)=
+ & MAX(PARF(139-KFQPOP/3),WTTOT/(1D0-WTFAIL))
+ IPOS=IPOS+30
+ 210 CONTINUE
+ 220 CONTINUE
+ 230 CONTINUE
+ 240 CONTINUE
+ IF(PARF(139).GT.1D-10) PARF(138)=PARF(138)/PARF(139)
+ MSTU(121)=0
+
+ ENDIF
+
+C..Recombine diquark weights to flavour and spin ratios
+ PARF(151)=(2D0*(QBB(ISU0)+QBB(ISU1))+QBB(ISS1))/
+ & (1D0+QBB(IUD1)+QBB(IUU1)+QBB(IUS0)+QBB(IUS1))
+ PARF(152)=2D0*(QBB(IUS0)+QBB(IUS1))/(1D0+QBB(IUD1)+QBB(IUU1))
+ PARF(153)=QBB(ISS1)/(QBB(ISU0)+QBB(ISU1))
+ PARF(154)=QBB(IUU1)/(1D0+QBB(IUD1)+QBB(IUU1))
+ PARF(155)=QBB(ISU1)/QBB(ISU0)
+ PARF(156)=QBB(IUS1)/QBB(IUS0)
+ PARF(157)=QBB(IUD1)
+
+ PARF(161)=(2D0*(QBM(ISU0)+QBM(ISU1))+QBM(ISS1))/
+ & (1D0+QBM(IUD1)+QBM(IUU1)+QBM(IUS0)+QBM(IUS1))
+ PARF(162)=2D0*(QBM(IUS0)+QBM(IUS1))/(1D0+QBM(IUD1)+QBM(IUU1))
+ PARF(163)=QBM(ISS1)/(QBM(ISU0)+QBM(ISU1))
+ PARF(164)=QBM(IUU1)/(1D0+QBM(IUD1)+QBM(IUU1))
+ PARF(165)=QBM(ISU1)/QBM(ISU0)
+ PARF(166)=QBM(IUS1)/QBM(IUS0)
+ PARF(167)=QBM(IUD1)
+
+ PARF(171)=(2D0*(DMB(ISU0)+DMB(ISU1))+DMB(ISS1))/
+ & (1D0+DMB(IUD1)+DMB(IUU1)+DMB(IUS0)+DMB(IUS1))
+ PARF(172)=2D0*(DMB(IUS0)+DMB(IUS1))/(1D0+DMB(IUD1)+DMB(IUU1))
+ PARF(173)=DMB(ISS1)/(DMB(ISU0)+DMB(ISU1))
+ PARF(174)=DMB(IUU1)/(1D0+DMB(IUD1)+DMB(IUU1))
+ PARF(175)=DMB(ISU1)/DMB(ISU0)
+ PARF(176)=DMB(IUS1)/DMB(IUS0)
+ PARF(177)=DMB(IUD1)
+
+ PARF(185)=DMB(7+ISU1)/DMB(7+ISU0)
+ PARF(186)=DMB(7+IUS1)/DMB(7+IUS0)
+ PARF(187)=DMB(7+IUD1)
+
+ RETURN
+ END
+
+
+C*********************************************************************
+
+C...PYPTDI
+C...Generates transverse momentum according to a Gaussian.
+
+ SUBROUTINE PYPTDI(KFL,PX,PY)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Generate p_T and azimuthal angle, gives p_x and p_y.
+ KFLA=IABS(KFL)
+ PT=PARJ(21)*SQRT(-LOG(MAX(1D-10,PYR(0))))
+ IF(PARJ(23).GT.PYR(0)) PT=PARJ(24)*PT
+ IF(MSTJ(91).EQ.1) PT=PARJ(22)*PT
+ IF(KFLA.EQ.0.AND.MSTJ(13).LE.0) PT=0D0
+ PHI=PARU(2)*PYR(0)
+ PX=PT*COS(PHI)
+ PY=PT*SIN(PHI)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYZDIS
+C...Generates the longitudinal splitting variable z.
+
+ SUBROUTINE PYZDIS(KFL1,KFL2,PR,Z)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+C...Check if heavy flavour fragmentation.
+ KFLA=IABS(KFL1)
+ KFLB=IABS(KFL2)
+ KFLH=KFLA
+ IF(KFLA.GE.10) KFLH=MOD(KFLA/1000,10)
+
+C...Lund symmetric scaling function: determine parameters of shape.
+ IF(MSTJ(11).EQ.1.OR.(MSTJ(11).EQ.3.AND.KFLH.LE.3).OR.
+ &MSTJ(11).GE.4) THEN
+ FA=PARJ(41)
+ IF(MSTJ(91).EQ.1) FA=PARJ(43)
+ IF(KFLB.GE.10) FA=FA+PARJ(45)
+ FBB=PARJ(42)
+ IF(MSTJ(91).EQ.1) FBB=PARJ(44)
+ FB=FBB*PR
+ FC=1D0
+ IF(KFLA.GE.10) FC=FC-PARJ(45)
+ IF(KFLB.GE.10) FC=FC+PARJ(45)
+ IF(MSTJ(11).GE.4.AND.(KFLH.EQ.4.OR.KFLH.EQ.5)) THEN
+ FRED=PARJ(46)
+ IF(MSTJ(11).EQ.5.AND.KFLH.EQ.5) FRED=PARJ(47)
+ FC=FC+FRED*FBB*PARF(100+KFLH)**2
+ ENDIF
+ MC=1
+ IF(ABS(FC-1D0).GT.0.01D0) MC=2
+
+C...Determine position of maximum. Special cases for a = 0 or a = c.
+ IF(FA.LT.0.02D0) THEN
+ MA=1
+ ZMAX=1D0
+ IF(FC.GT.FB) ZMAX=FB/FC
+ ELSEIF(ABS(FC-FA).LT.0.01D0) THEN
+ MA=2
+ ZMAX=FB/(FB+FC)
+ ELSE
+ MA=3
+ ZMAX=0.5D0*(FB+FC-SQRT((FB-FC)**2+4D0*FA*FB))/(FC-FA)
+ IF(ZMAX.GT.0.9999D0.AND.FB.GT.100D0) ZMAX=MIN(ZMAX,1D0-FA/FB)
+ ENDIF
+
+C...Subdivide z range if distribution very peaked near endpoint.
+ MMAX=2
+ IF(ZMAX.LT.0.1D0) THEN
+ MMAX=1
+ ZDIV=2.75D0*ZMAX
+ IF(MC.EQ.1) THEN
+ FINT=1D0-LOG(ZDIV)
+ ELSE
+ ZDIVC=ZDIV**(1D0-FC)
+ FINT=1D0+(1D0-1D0/ZDIVC)/(FC-1D0)
+ ENDIF
+ ELSEIF(ZMAX.GT.0.85D0.AND.FB.GT.1D0) THEN
+ MMAX=3
+ FSCB=SQRT(4D0+(FC/FB)**2)
+ ZDIV=FSCB-1D0/ZMAX-(FC/FB)*LOG(ZMAX*0.5D0*(FSCB+FC/FB))
+ IF(MA.GE.2) ZDIV=ZDIV+(FA/FB)*LOG(1D0-ZMAX)
+ ZDIV=MIN(ZMAX,MAX(0D0,ZDIV))
+ FINT=1D0+FB*(1D0-ZDIV)
+ ENDIF
+
+C...Choice of z, preweighted for peaks at low or high z.
+ 100 Z=PYR(0)
+ FPRE=1D0
+ IF(MMAX.EQ.1) THEN
+ IF(FINT*PYR(0).LE.1D0) THEN
+ Z=ZDIV*Z
+ ELSEIF(MC.EQ.1) THEN
+ Z=ZDIV**Z
+ FPRE=ZDIV/Z
+ ELSE
+ Z=(ZDIVC+Z*(1D0-ZDIVC))**(1D0/(1D0-FC))
+ FPRE=(ZDIV/Z)**FC
+ ENDIF
+ ELSEIF(MMAX.EQ.3) THEN
+ IF(FINT*PYR(0).LE.1D0) THEN
+ Z=ZDIV+LOG(Z)/FB
+ FPRE=EXP(FB*(Z-ZDIV))
+ ELSE
+ Z=ZDIV+Z*(1D0-ZDIV)
+ ENDIF
+ ENDIF
+
+C...Weighting according to correct formula.
+ IF(Z.LE.0D0.OR.Z.GE.1D0) GOTO 100
+ FEXP=FC*LOG(ZMAX/Z)+FB*(1D0/ZMAX-1D0/Z)
+ IF(MA.GE.2) FEXP=FEXP+FA*LOG((1D0-Z)/(1D0-ZMAX))
+ FVAL=EXP(MAX(-50D0,MIN(50D0,FEXP)))
+ IF(FVAL.LT.PYR(0)*FPRE) GOTO 100
+
+C...Generate z according to Field-Feynman, SLAC, (1-z)**c OR z**c.
+ ELSE
+ FC=PARJ(50+MAX(1,KFLH))
+ IF(MSTJ(91).EQ.1) FC=PARJ(59)
+ 110 Z=PYR(0)
+ IF(FC.GE.0D0.AND.FC.LE.1D0) THEN
+ IF(FC.GT.PYR(0)) Z=1D0-Z**(1D0/3D0)
+ ELSEIF(FC.GT.-1.AND.FC.LT.0D0) THEN
+ IF(-4D0*FC*Z*(1D0-Z)**2.LT.PYR(0)*((1D0-Z)**2-FC*Z)**2)
+ & GOTO 110
+ ELSE
+ IF(FC.GT.0D0) Z=1D0-Z**(1D0/FC)
+ IF(FC.LT.0D0) Z=Z**(-1D0/FC)
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSHOW
+C...Generates timelike parton showers from given partons.
+
+ SUBROUTINE PYSHOW(IP1,IP2,QMAX)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+ PARAMETER (MAXNUR=1000)
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYPART/,/PYJETS/,/PYDAT1/,/PYDAT2/,/PYPARS/,/PYINT1/
+C...Local arrays.
+ DIMENSION PMTH(5,140),PS(5),PMA(100),PMSD(100),IEP(100),IPA(100),
+ &KFLA(100),KFLD(100),KFL(100),ITRY(100),ISI(100),ISL(100),DP(100),
+ &DPT(5,4),KSH(0:140),KCII(2),NIIS(2),IIIS(2,2),THEIIS(2,2),
+ &PHIIIS(2,2),ISII(2),ISSET(2),ISCOL(0:140),ISCHG(0:140),
+ &IREF(1000)
+
+C...Check that QMAX not too low.
+ IF(MSTJ(41).LE.0) THEN
+ RETURN
+ ELSEIF(MSTJ(41).EQ.1.OR.MSTJ(41).EQ.11) THEN
+ IF(QMAX.LE.PARJ(82).AND.IP2.GE.-80) RETURN
+ ELSE
+ IF(QMAX.LE.MIN(PARJ(82),PARJ(83),PARJ(90)).AND.IP2.GE.-80)
+ & RETURN
+ ENDIF
+
+C...Store positions of shower initiating partons.
+ MPSPD=0
+ IF(IP1.GT.0.AND.IP1.LE.MIN(N,MSTU(4)-MSTU(32)).AND.IP2.EQ.0) THEN
+ NPA=1
+ IPA(1)=IP1
+ ELSEIF(MIN(IP1,IP2).GT.0.AND.MAX(IP1,IP2).LE.MIN(N,MSTU(4)-
+ & MSTU(32))) THEN
+ NPA=2
+ IPA(1)=IP1
+ IPA(2)=IP2
+ ELSEIF(IP1.GT.0.AND.IP1.LE.MIN(N,MSTU(4)-MSTU(32)).AND.IP2.LT.0
+ & .AND.IP2.GE.-80) THEN
+ NPA=IABS(IP2)
+ DO 100 I=1,NPA
+ IPA(I)=IP1+I-1
+ 100 CONTINUE
+ ELSEIF(IP1.GT.0.AND.IP1.LE.MIN(N,MSTU(4)-MSTU(32)).AND.
+ &IP2.EQ.-100) THEN
+ MPSPD=1
+ NPA=2
+ IPA(1)=IP1+6
+ IPA(2)=IP1+7
+ ELSE
+ CALL PYERRM(12,
+ & '(PYSHOW:) failed to reconstruct showering system')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+
+C...Send off to PYPTFS for pT-ordered evolution if requested,
+C...if at least 2 partons, and without predefined shower branchings.
+ IF((MSTJ(41).EQ.11.OR.MSTJ(41).EQ.12).AND.NPA.GE.2.AND.
+ &MPSPD.EQ.0) THEN
+ NPART=NPA
+ DO 110 II=1,NPART
+ IPART(II)=IPA(II)
+ PTPART(II)=0.5D0*QMAX
+ 110 CONTINUE
+ CALL PYPTFS(2,0.5D0*QMAX,0D0,PTGEN)
+ RETURN
+ ENDIF
+
+C...Initialization of cutoff masses etc.
+ DO 120 IFL=0,40
+ ISCOL(IFL)=0
+ ISCHG(IFL)=0
+ KSH(IFL)=0
+ 120 CONTINUE
+ ISCOL(21)=1
+ KSH(21)=1
+ PMTH(1,21)=PYMASS(21)
+ PMTH(2,21)=SQRT(PMTH(1,21)**2+0.25D0*PARJ(82)**2)
+ PMTH(3,21)=2D0*PMTH(2,21)
+ PMTH(4,21)=PMTH(3,21)
+ PMTH(5,21)=PMTH(3,21)
+ PMTH(1,22)=PYMASS(22)
+ PMTH(2,22)=SQRT(PMTH(1,22)**2+0.25D0*PARJ(83)**2)
+ PMTH(3,22)=2D0*PMTH(2,22)
+ PMTH(4,22)=PMTH(3,22)
+ PMTH(5,22)=PMTH(3,22)
+ PMQTH1=PARJ(82)
+ IF(MSTJ(41).GE.2) PMQTH1=MIN(PARJ(82),PARJ(83))
+ PMQT1E=MIN(PMQTH1,PARJ(90))
+ PMQTH2=PMTH(2,21)
+ IF(MSTJ(41).GE.2) PMQTH2=MIN(PMTH(2,21),PMTH(2,22))
+ PMQT2E=MIN(PMQTH2,0.5D0*PARJ(90))
+ DO 130 IFL=1,5
+ ISCOL(IFL)=1
+ IF(MSTJ(41).GE.2) ISCHG(IFL)=1
+ KSH(IFL)=1
+ PMTH(1,IFL)=PYMASS(IFL)
+ PMTH(2,IFL)=SQRT(PMTH(1,IFL)**2+0.25D0*PMQTH1**2)
+ PMTH(3,IFL)=PMTH(2,IFL)+PMQTH2
+ PMTH(4,IFL)=SQRT(PMTH(1,IFL)**2+0.25D0*PARJ(82)**2)+PMTH(2,21)
+ PMTH(5,IFL)=SQRT(PMTH(1,IFL)**2+0.25D0*PARJ(83)**2)+PMTH(2,22)
+ 130 CONTINUE
+ DO 140 IFL=11,15,2
+ IF(MSTJ(41).EQ.2.OR.MSTJ(41).GE.4) ISCHG(IFL)=1
+ IF(MSTJ(41).EQ.2.OR.MSTJ(41).GE.4) KSH(IFL)=1
+ PMTH(1,IFL)=PYMASS(IFL)
+ PMTH(2,IFL)=SQRT(PMTH(1,IFL)**2+0.25D0*PARJ(90)**2)
+ PMTH(3,IFL)=PMTH(2,IFL)+0.5D0*PARJ(90)
+ PMTH(4,IFL)=PMTH(3,IFL)
+ PMTH(5,IFL)=PMTH(3,IFL)
+ 140 CONTINUE
+ PT2MIN=MAX(0.5D0*PARJ(82),1.1D0*PARJ(81))**2
+ ALAMS=PARJ(81)**2
+ ALFM=LOG(PT2MIN/ALAMS)
+
+C...Check on phase space available for emission.
+ IREJ=0
+ DO 150 J=1,5
+ PS(J)=0D0
+ 150 CONTINUE
+ PM=0D0
+ KFLA(2)=0
+ DO 170 I=1,NPA
+ KFLA(I)=IABS(K(IPA(I),2))
+ PMA(I)=P(IPA(I),5)
+C...Special cutoff masses for initial partons (may be a heavy quark,
+C...squark, ..., and need not be on the mass shell).
+ IR=30+I
+ IF(NPA.LE.1) IREF(I)=IR
+ IF(NPA.GE.2) IREF(I+1)=IR
+ ISCOL(IR)=0
+ ISCHG(IR)=0
+ KSH(IR)=0
+ IF(KFLA(I).LE.8) THEN
+ ISCOL(IR)=1
+ IF(MSTJ(41).GE.2) ISCHG(IR)=1
+ ELSEIF(KFLA(I).EQ.11.OR.KFLA(I).EQ.13.OR.KFLA(I).EQ.15.OR.
+ & KFLA(I).EQ.17) THEN
+ IF(MSTJ(41).EQ.2.OR.MSTJ(41).GE.4) ISCHG(IR)=1
+ ELSEIF(KFLA(I).EQ.21) THEN
+ ISCOL(IR)=1
+ ELSEIF((KFLA(I).GE.KSUSY1+1.AND.KFLA(I).LE.KSUSY1+8).OR.
+ & (KFLA(I).GE.KSUSY2+1.AND.KFLA(I).LE.KSUSY2+8)) THEN
+ ISCOL(IR)=1
+ ELSEIF(KFLA(I).EQ.KSUSY1+21) THEN
+ ISCOL(IR)=1
+C...QUARKONIA+++
+C...same for QQ~[3S18]
+ ELSEIF(MSTP(148).GE.1.AND.(KFLA(I).EQ.9900443.OR.
+ & KFLA(I).EQ.9900553)) THEN
+ ISCOL(IR)=1
+C...QUARKONIA---
+ ENDIF
+ IF(ISCOL(IR).EQ.1.OR.ISCHG(IR).EQ.1) KSH(IR)=1
+ PMTH(1,IR)=PMA(I)
+ IF(ISCOL(IR).EQ.1.AND.ISCHG(IR).EQ.1) THEN
+ PMTH(2,IR)=SQRT(PMTH(1,IR)**2+0.25D0*PMQTH1**2)
+ PMTH(3,IR)=PMTH(2,IR)+PMQTH2
+ PMTH(4,IR)=SQRT(PMTH(1,IR)**2+0.25D0*PARJ(82)**2)+PMTH(2,21)
+ PMTH(5,IR)=SQRT(PMTH(1,IR)**2+0.25D0*PARJ(83)**2)+PMTH(2,22)
+ ELSEIF(ISCOL(IR).EQ.1) THEN
+ PMTH(2,IR)=SQRT(PMTH(1,IR)**2+0.25D0*PARJ(82)**2)
+ PMTH(3,IR)=PMTH(2,IR)+0.5D0*PARJ(82)
+ PMTH(4,IR)=PMTH(3,IR)
+ PMTH(5,IR)=PMTH(3,IR)
+ ELSEIF(ISCHG(IR).EQ.1) THEN
+ PMTH(2,IR)=SQRT(PMTH(1,IR)**2+0.25D0*PARJ(90)**2)
+ PMTH(3,IR)=PMTH(2,IR)+0.5D0*PARJ(90)
+ PMTH(4,IR)=PMTH(3,IR)
+ PMTH(5,IR)=PMTH(3,IR)
+ ENDIF
+ IF(KSH(IR).EQ.1) PMA(I)=PMTH(3,IR)
+ PM=PM+PMA(I)
+ IF(KSH(IR).EQ.0.OR.PMA(I).GT.10D0*QMAX) IREJ=IREJ+1
+ DO 160 J=1,4
+ PS(J)=PS(J)+P(IPA(I),J)
+ 160 CONTINUE
+ 170 CONTINUE
+ IF(IREJ.EQ.NPA.AND.IP2.GE.-7) RETURN
+ PS(5)=SQRT(MAX(0D0,PS(4)**2-PS(1)**2-PS(2)**2-PS(3)**2))
+ IF(NPA.EQ.1) PS(5)=PS(4)
+ IF(PS(5).LE.PM+PMQT1E) RETURN
+
+C...Identify source: q(1), ~q(2), V(3), S(4), chi(5), ~g(6), unknown(0).
+ KFSRCE=0
+ IF(IP2.LE.0) THEN
+ ELSEIF(K(IP1,3).EQ.K(IP2,3).AND.K(IP1,3).GT.0) THEN
+ KFSRCE=IABS(K(K(IP1,3),2))
+ ELSE
+ IPAR1=MAX(1,K(IP1,3))
+ IPAR2=MAX(1,K(IP2,3))
+ IF(K(IPAR1,3).EQ.K(IPAR2,3).AND.K(IPAR1,3).GT.0)
+ & KFSRCE=IABS(K(K(IPAR1,3),2))
+ ENDIF
+ ITYPES=0
+ IF(KFSRCE.GE.1.AND.KFSRCE.LE.8) ITYPES=1
+ IF(KFSRCE.GE.KSUSY1+1.AND.KFSRCE.LE.KSUSY1+8) ITYPES=2
+ IF(KFSRCE.GE.KSUSY2+1.AND.KFSRCE.LE.KSUSY2+8) ITYPES=2
+ IF(KFSRCE.GE.21.AND.KFSRCE.LE.24) ITYPES=3
+ IF(KFSRCE.GE.32.AND.KFSRCE.LE.34) ITYPES=3
+ IF(KFSRCE.EQ.25.OR.(KFSRCE.GE.35.AND.KFSRCE.LE.37)) ITYPES=4
+ IF(KFSRCE.GE.KSUSY1+22.AND.KFSRCE.LE.KSUSY1+37) ITYPES=5
+ IF(KFSRCE.EQ.KSUSY1+21) ITYPES=6
+
+C...Identify two primary showerers.
+ ITYPE1=0
+ IF(KFLA(1).GE.1.AND.KFLA(1).LE.8) ITYPE1=1
+ IF(KFLA(1).GE.KSUSY1+1.AND.KFLA(1).LE.KSUSY1+8) ITYPE1=2
+ IF(KFLA(1).GE.KSUSY2+1.AND.KFLA(1).LE.KSUSY2+8) ITYPE1=2
+ IF(KFLA(1).GE.21.AND.KFLA(1).LE.24) ITYPE1=3
+ IF(KFLA(1).GE.32.AND.KFLA(1).LE.34) ITYPE1=3
+ IF(KFLA(1).EQ.25.OR.(KFLA(1).GE.35.AND.KFLA(1).LE.37)) ITYPE1=4
+ IF(KFLA(1).GE.KSUSY1+22.AND.KFLA(1).LE.KSUSY1+37) ITYPE1=5
+ IF(KFLA(1).EQ.KSUSY1+21) ITYPE1=6
+ ITYPE2=0
+ IF(KFLA(2).GE.1.AND.KFLA(2).LE.8) ITYPE2=1
+ IF(KFLA(2).GE.KSUSY1+1.AND.KFLA(2).LE.KSUSY1+8) ITYPE2=2
+ IF(KFLA(2).GE.KSUSY2+1.AND.KFLA(2).LE.KSUSY2+8) ITYPE2=2
+ IF(KFLA(2).GE.21.AND.KFLA(2).LE.24) ITYPE2=3
+ IF(KFLA(2).GE.32.AND.KFLA(2).LE.34) ITYPE2=3
+ IF(KFLA(2).EQ.25.OR.(KFLA(2).GE.35.AND.KFLA(2).LE.37)) ITYPE2=4
+ IF(KFLA(2).GE.KSUSY1+22.AND.KFLA(2).LE.KSUSY1+37) ITYPE2=5
+ IF(KFLA(2).EQ.KSUSY1+21) ITYPE2=6
+
+C...Order of showerers. Presence of gluino.
+ ITYPMN=MIN(ITYPE1,ITYPE2)
+ ITYPMX=MAX(ITYPE1,ITYPE2)
+ IORD=1
+ IF(ITYPE1.GT.ITYPE2) IORD=2
+ IGLUI=0
+ IF(ITYPE1.EQ.6.OR.ITYPE2.EQ.6) IGLUI=1
+
+C...Check if 3-jet matrix elements to be used.
+ M3JC=0
+ ALPHA=0.5D0
+ IF(NPA.EQ.2.AND.MSTJ(47).GE.1.AND.MPSPD.EQ.0) THEN
+ IF(MSTJ(38).NE.0) THEN
+ M3JC=MSTJ(38)
+ ALPHA=PARJ(80)
+ MSTJ(38)=0
+ ELSEIF(MSTJ(47).GE.6) THEN
+ M3JC=MSTJ(47)
+ ELSE
+ ICLASS=1
+ ICOMBI=4
+
+C...Vector/axial vector -> q + qbar; q -> q + V.
+ IF(ITYPMN.EQ.1.AND.ITYPMX.EQ.1.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.3)) THEN
+ ICLASS=2
+ IF(KFSRCE.EQ.21.OR.KFSRCE.EQ.22) THEN
+ ICOMBI=1
+ ELSEIF(KFSRCE.EQ.23.OR.(KFSRCE.EQ.0.AND.
+ & K(IPA(1),2)+K(IPA(2),2).EQ.0)) THEN
+C...gamma*/Z0: assume e+e- initial state if unknown.
+ EI=-1D0
+ IF(KFSRCE.EQ.23) THEN
+ IANNFL=K(K(IP1,3),3)
+ IF(IANNFL.NE.0) THEN
+ KANNFL=IABS(K(IANNFL,2))
+ IF(KANNFL.GE.1.AND.KANNFL.LE.18) EI=KCHG(KANNFL,1)/3D0
+ ENDIF
+ ENDIF
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*PARU(102)
+ EF=KCHG(KFLA(1),1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*PARU(102)
+ XWC=1D0/(16D0*PARU(102)*(1D0-PARU(102)))
+ SH=PS(5)**2
+ SQMZ=PMAS(23,1)**2
+ SQWZ=PS(5)*PMAS(23,2)
+ SBWZ=1D0/((SH-SQMZ)**2+SQWZ**2)
+ VECT=EI**2*EF**2+2D0*EI*VI*EF*VF*XWC*SH*(SH-SQMZ)*SBWZ+
+ & (VI**2+AI**2)*VF**2*XWC**2*SH**2*SBWZ
+ AXIV=(VI**2+AI**2)*AF**2*XWC**2*SH**2*SBWZ
+ ICOMBI=3
+ ALPHA=VECT/(VECT+AXIV)
+ ELSEIF(KFSRCE.EQ.24.OR.KFSRCE.EQ.0) THEN
+ ICOMBI=4
+ ENDIF
+C...For chi -> chi q qbar, use V/A -> q qbar as first approximation.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.1.AND.ITYPES.EQ.5) THEN
+ ICLASS=2
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.3.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=3
+
+C...Scalar/pseudoscalar -> q + qbar; q -> q + S.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.1.AND.ITYPES.EQ.4) THEN
+ ICLASS=4
+ IF(KFSRCE.EQ.25.OR.KFSRCE.EQ.35.OR.KFSRCE.EQ.37) THEN
+ ICOMBI=1
+ ELSEIF(KFSRCE.EQ.36) THEN
+ ICOMBI=2
+ ENDIF
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.4.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=5
+
+C...V -> ~q + ~qbar; ~q -> ~q + V; S -> ~q + ~qbar; ~q -> ~q + S.
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.2.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.3)) THEN
+ ICLASS=6
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.3.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=7
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.2.AND.ITYPES.EQ.4) THEN
+ ICLASS=8
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.4.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=9
+
+C...chi -> q + ~qbar; ~q -> q + chi; q -> ~q + chi.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.2.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.5)) THEN
+ ICLASS=10
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.5.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=11
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.5.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=12
+
+C...~g -> q + ~qbar; ~q -> q + ~g; q -> ~q + ~g.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.2.AND.ITYPES.EQ.6) THEN
+ ICLASS=13
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.6.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=14
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.6.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=15
+
+C...g -> ~g + ~g (eikonal approximation).
+ ELSEIF(ITYPMN.EQ.6.AND.ITYPMX.EQ.6.AND.ITYPES.EQ.0) THEN
+ ICLASS=16
+ ENDIF
+ M3JC=5*ICLASS+ICOMBI
+ ENDIF
+ ENDIF
+
+C...Find if interference with initial state partons.
+ MIIS=0
+ IF(MSTJ(50).GE.1.AND.MSTJ(50).LE.3.AND.NPA.EQ.2.AND.KFSRCE.EQ.0
+ &.AND.MPSPD.EQ.0) MIIS=MSTJ(50)
+ IF(MSTJ(50).GE.4.AND.MSTJ(50).LE.6.AND.NPA.EQ.2.AND.MPSPD.EQ.0)
+ &MIIS=MSTJ(50)-3
+ IF(MIIS.NE.0) THEN
+ DO 190 I=1,2
+ KCII(I)=0
+ KCA=PYCOMP(KFLA(I))
+ IF(KCA.NE.0) KCII(I)=KCHG(KCA,2)*ISIGN(1,K(IPA(I),2))
+ NIIS(I)=0
+ IF(KCII(I).NE.0) THEN
+ DO 180 J=1,2
+ ICSI=MOD(K(IPA(I),3+J)/MSTU(5),MSTU(5))
+ IF(ICSI.GT.0.AND.ICSI.NE.IPA(1).AND.ICSI.NE.IPA(2).AND.
+ & (KCII(I).EQ.(-1)**(J+1).OR.KCII(I).EQ.2)) THEN
+ NIIS(I)=NIIS(I)+1
+ IIIS(I,NIIS(I))=ICSI
+ ENDIF
+ 180 CONTINUE
+ ENDIF
+ 190 CONTINUE
+ IF(NIIS(1)+NIIS(2).EQ.0) MIIS=0
+ ENDIF
+
+C...Boost interfering initial partons to rest frame
+C...and reconstruct their polar and azimuthal angles.
+ IF(MIIS.NE.0) THEN
+ DO 210 I=1,2
+ DO 200 J=1,5
+ K(N+I,J)=K(IPA(I),J)
+ P(N+I,J)=P(IPA(I),J)
+ V(N+I,J)=0D0
+ 200 CONTINUE
+ 210 CONTINUE
+ DO 230 I=3,2+NIIS(1)
+ DO 220 J=1,5
+ K(N+I,J)=K(IIIS(1,I-2),J)
+ P(N+I,J)=P(IIIS(1,I-2),J)
+ V(N+I,J)=0D0
+ 220 CONTINUE
+ 230 CONTINUE
+ DO 250 I=3+NIIS(1),2+NIIS(1)+NIIS(2)
+ DO 240 J=1,5
+ K(N+I,J)=K(IIIS(2,I-2-NIIS(1)),J)
+ P(N+I,J)=P(IIIS(2,I-2-NIIS(1)),J)
+ V(N+I,J)=0D0
+ 240 CONTINUE
+ 250 CONTINUE
+ CALL PYROBO(N+1,N+2+NIIS(1)+NIIS(2),0D0,0D0,-PS(1)/PS(4),
+ & -PS(2)/PS(4),-PS(3)/PS(4))
+ PHI=PYANGL(P(N+1,1),P(N+1,2))
+ CALL PYROBO(N+1,N+2+NIIS(1)+NIIS(2),0D0,-PHI,0D0,0D0,0D0)
+ THE=PYANGL(P(N+1,3),P(N+1,1))
+ CALL PYROBO(N+1,N+2+NIIS(1)+NIIS(2),-THE,0D0,0D0,0D0,0D0)
+ DO 260 I=3,2+NIIS(1)
+ THEIIS(1,I-2)=PYANGL(P(N+I,3),SQRT(P(N+I,1)**2+P(N+I,2)**2))
+ PHIIIS(1,I-2)=PYANGL(P(N+I,1),P(N+I,2))
+ 260 CONTINUE
+ DO 270 I=3+NIIS(1),2+NIIS(1)+NIIS(2)
+ THEIIS(2,I-2-NIIS(1))=PARU(1)-PYANGL(P(N+I,3),
+ & SQRT(P(N+I,1)**2+P(N+I,2)**2))
+ PHIIIS(2,I-2-NIIS(1))=PYANGL(P(N+I,1),P(N+I,2))
+ 270 CONTINUE
+ ENDIF
+
+C...Boost 3 or more partons to their rest frame.
+ IF(NPA.GE.3) CALL PYROBO(IPA(1),IPA(NPA),0D0,0D0,-PS(1)/PS(4),
+ &-PS(2)/PS(4),-PS(3)/PS(4))
+
+C...Define imagined single initiator of shower for parton system.
+ NS=N
+ IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYSHOW:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ 280 N=NS
+ IF(NPA.GE.2) THEN
+ K(N+1,1)=11
+ K(N+1,2)=21
+ K(N+1,3)=0
+ K(N+1,4)=0
+ K(N+1,5)=0
+ P(N+1,1)=0D0
+ P(N+1,2)=0D0
+ P(N+1,3)=0D0
+ P(N+1,4)=PS(5)
+ P(N+1,5)=PS(5)
+ V(N+1,5)=PS(5)**2
+ N=N+1
+ IREF(1)=21
+ ENDIF
+
+C...Loop over partons that may branch.
+ NEP=NPA
+ IM=NS
+ IF(NPA.EQ.1) IM=NS-1
+ 290 IM=IM+1
+ IF(N.GT.NS) THEN
+ IF(IM.GT.N) GOTO 600
+ KFLM=IABS(K(IM,2))
+ IR=IREF(IM-NS)
+ IF(KSH(IR).EQ.0) GOTO 290
+ IF(P(IM,5).LT.PMTH(2,IR)) GOTO 290
+ IGM=K(IM,3)
+ ELSE
+ IGM=-1
+ ENDIF
+ IF(N+NEP.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYSHOW:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+
+C...Position of aunt (sister to branching parton).
+C...Origin and flavour of daughters.
+ IAU=0
+ IF(IGM.GT.0) THEN
+ IF(K(IM-1,3).EQ.IGM) IAU=IM-1
+ IF(N.GE.IM+1.AND.K(IM+1,3).EQ.IGM) IAU=IM+1
+ ENDIF
+ IF(IGM.GE.0) THEN
+ K(IM,4)=N+1
+ DO 300 I=1,NEP
+ K(N+I,3)=IM
+ 300 CONTINUE
+ ELSE
+ K(N+1,3)=IPA(1)
+ ENDIF
+ IF(IGM.LE.0) THEN
+ DO 310 I=1,NEP
+ K(N+I,2)=K(IPA(I),2)
+ 310 CONTINUE
+ ELSEIF(KFLM.NE.21) THEN
+ K(N+1,2)=K(IM,2)
+ K(N+2,2)=K(IM,5)
+ IREF(N+1-NS)=IREF(IM-NS)
+ IREF(N+2-NS)=IABS(K(N+2,2))
+ ELSEIF(K(IM,5).EQ.21) THEN
+ K(N+1,2)=21
+ K(N+2,2)=21
+ IREF(N+1-NS)=21
+ IREF(N+2-NS)=21
+ ELSE
+ K(N+1,2)=K(IM,5)
+ K(N+2,2)=-K(IM,5)
+ IREF(N+1-NS)=IABS(K(N+1,2))
+ IREF(N+2-NS)=IABS(K(N+2,2))
+ ENDIF
+
+C...Reset flags on daughters and tries made.
+ DO 320 IP=1,NEP
+ K(N+IP,1)=3
+ K(N+IP,4)=0
+ K(N+IP,5)=0
+ KFLD(IP)=IABS(K(N+IP,2))
+ IF(KCHG(PYCOMP(KFLD(IP)),2).EQ.0) K(N+IP,1)=1
+ ITRY(IP)=0
+ ISL(IP)=0
+ ISI(IP)=0
+ IF(KSH(IREF(N+IP-NS)).EQ.1) ISI(IP)=1
+ 320 CONTINUE
+ ISLM=0
+
+C...Maximum virtuality of daughters.
+ IF(IGM.LE.0) THEN
+ DO 330 I=1,NPA
+ IF(NPA.GE.3) P(N+I,4)=P(IPA(I),4)
+ P(N+I,5)=MIN(QMAX,PS(5))
+ IR=IREF(N+I-NS)
+ IF(IP2.LE.-8) P(N+I,5)=MAX(P(N+I,5),2D0*PMTH(3,IR))
+ IF(ISI(I).EQ.0) P(N+I,5)=P(IPA(I),5)
+ 330 CONTINUE
+ ELSE
+ IF(MSTJ(43).LE.2) PEM=V(IM,2)
+ IF(MSTJ(43).GE.3) PEM=P(IM,4)
+ P(N+1,5)=MIN(P(IM,5),V(IM,1)*PEM)
+ P(N+2,5)=MIN(P(IM,5),(1D0-V(IM,1))*PEM)
+ IF(K(N+2,2).EQ.22) P(N+2,5)=PMTH(1,22)
+ ENDIF
+ DO 340 I=1,NEP
+ PMSD(I)=P(N+I,5)
+ IF(ISI(I).EQ.1) THEN
+ IR=IREF(N+I-NS)
+ IF(P(N+I,5).LE.PMTH(3,IR)) P(N+I,5)=PMTH(1,IR)
+ ENDIF
+ V(N+I,5)=P(N+I,5)**2
+ 340 CONTINUE
+
+C...Choose one of the daughters for evolution.
+ 350 INUM=0
+ IF(NEP.EQ.1) INUM=1
+ DO 360 I=1,NEP
+ IF(INUM.EQ.0.AND.ISL(I).EQ.1) INUM=I
+ 360 CONTINUE
+ DO 370 I=1,NEP
+ IF(INUM.EQ.0.AND.ITRY(I).EQ.0.AND.ISI(I).EQ.1) THEN
+ IR=IREF(N+I-NS)
+ IF(P(N+I,5).GE.PMTH(2,IR)) INUM=I
+ ENDIF
+ 370 CONTINUE
+ IF(INUM.EQ.0) THEN
+ RMAX=0D0
+ DO 380 I=1,NEP
+ IF(ISI(I).EQ.1.AND.PMSD(I).GE.PMQT2E) THEN
+ RPM=P(N+I,5)/PMSD(I)
+ IR=IREF(N+I-NS)
+ IF(RPM.GT.RMAX.AND.P(N+I,5).GE.PMTH(2,IR)) THEN
+ RMAX=RPM
+ INUM=I
+ ENDIF
+ ENDIF
+ 380 CONTINUE
+ ENDIF
+
+C...Cancel choice of predetermined daughter already treated.
+ INUM=MAX(1,INUM)
+ INUMT=INUM
+ IF(MPSPD.EQ.1.AND.IGM.EQ.0.AND.ITRY(INUMT).GE.1) THEN
+ IF(K(IP1-1+INUM,4).GT.0) INUM=3-INUM
+ ELSEIF(MPSPD.EQ.1.AND.IM.EQ.NS+2.AND.ITRY(INUMT).GE.1) THEN
+ IF(KFLD(INUMT).NE.21.AND.K(IP1+2,4).GT.0) INUM=3-INUM
+ IF(KFLD(INUMT).EQ.21.AND.K(IP1+3,4).GT.0) INUM=3-INUM
+ ENDIF
+
+C...Store information on choice of evolving daughter.
+ IEP(1)=N+INUM
+ DO 390 I=2,NEP
+ IEP(I)=IEP(I-1)+1
+ IF(IEP(I).GT.N+NEP) IEP(I)=N+1
+ 390 CONTINUE
+ DO 400 I=1,NEP
+ KFL(I)=IABS(K(IEP(I),2))
+ 400 CONTINUE
+ ITRY(INUM)=ITRY(INUM)+1
+ IF(ITRY(INUM).GT.200) THEN
+ CALL PYERRM(14,'(PYSHOW:) caught in infinite loop')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ Z=0.5D0
+ IR=IREF(IEP(1)-NS)
+ IF(KSH(IR).EQ.0) GOTO 450
+ IF(P(IEP(1),5).LT.PMTH(2,IR)) GOTO 450
+
+C...Check if evolution already predetermined for daughter.
+ IPSPD=0
+ IF(MPSPD.EQ.1.AND.IGM.EQ.0) THEN
+ IF(K(IP1-1+INUM,4).GT.0) IPSPD=IP1-1+INUM
+ ELSEIF(MPSPD.EQ.1.AND.IM.EQ.NS+2) THEN
+ IF(KFL(1).NE.21.AND.K(IP1+2,4).GT.0) IPSPD=IP1+2
+ IF(KFL(1).EQ.21.AND.K(IP1+3,4).GT.0) IPSPD=IP1+3
+ ENDIF
+ IF(INUM.EQ.1.OR.INUM.EQ.2) THEN
+ ISSET(INUM)=0
+ IF(IPSPD.NE.0) ISSET(INUM)=1
+ ENDIF
+
+C...Select side for interference with initial state partons.
+ IF(MIIS.GE.1.AND.IEP(1).LE.NS+3) THEN
+ III=IEP(1)-NS-1
+ ISII(III)=0
+ IF(IABS(KCII(III)).EQ.1.AND.NIIS(III).EQ.1) THEN
+ ISII(III)=1
+ ELSEIF(KCII(III).EQ.2.AND.NIIS(III).EQ.1) THEN
+ IF(PYR(0).GT.0.5D0) ISII(III)=1
+ ELSEIF(KCII(III).EQ.2.AND.NIIS(III).EQ.2) THEN
+ ISII(III)=1
+ IF(PYR(0).GT.0.5D0) ISII(III)=2
+ ENDIF
+ ENDIF
+
+C...Calculate allowed z range.
+ IF(NEP.EQ.1) THEN
+ PMED=PS(4)
+ ELSEIF(IGM.EQ.0.OR.MSTJ(43).LE.2) THEN
+ PMED=P(IM,5)
+ ELSE
+ IF(INUM.EQ.1) PMED=V(IM,1)*PEM
+ IF(INUM.EQ.2) PMED=(1D0-V(IM,1))*PEM
+ ENDIF
+ IF(MOD(MSTJ(43),2).EQ.1) THEN
+ ZC=PMTH(2,21)/PMED
+ ZCE=PMTH(2,22)/PMED
+ IF(ISCOL(IR).EQ.0) ZCE=0.5D0*PARJ(90)/PMED
+ ELSE
+ ZC=0.5D0*(1D0-SQRT(MAX(0D0,1D0-(2D0*PMTH(2,21)/PMED)**2)))
+ IF(ZC.LT.1D-6) ZC=(PMTH(2,21)/PMED)**2
+ PMTMPE=PMTH(2,22)
+ IF(ISCOL(IR).EQ.0) PMTMPE=0.5D0*PARJ(90)
+ ZCE=0.5D0*(1D0-SQRT(MAX(0D0,1D0-(2D0*PMTMPE/PMED)**2)))
+ IF(ZCE.LT.1D-6) ZCE=(PMTMPE/PMED)**2
+ ENDIF
+ ZC=MIN(ZC,0.491D0)
+ ZCE=MIN(ZCE,0.49991D0)
+ IF(((MSTJ(41).EQ.1.AND.ZC.GT.0.49D0).OR.(MSTJ(41).GE.2.AND.
+ &MIN(ZC,ZCE).GT.0.4999D0)).AND.IPSPD.EQ.0) THEN
+ P(IEP(1),5)=PMTH(1,IR)
+ V(IEP(1),5)=P(IEP(1),5)**2
+ GOTO 450
+ ENDIF
+
+C...Integral of Altarelli-Parisi z kernel for QCD.
+C...(Includes squark and gluino; with factor N_C/C_F extra for latter).
+ IF(MSTJ(49).EQ.0.AND.KFL(1).EQ.21) THEN
+ FBR=6D0*LOG((1D0-ZC)/ZC)+MSTJ(45)*0.5D0
+C...QUARKONIA+++
+C...Evolution of QQ~[3S18] state if MSTP(148)=1.
+ ELSEIF(MSTJ(49).EQ.0.AND.MSTP(149).GE.0.AND.
+ & (KFL(1).EQ.9900443.OR.KFL(1).EQ.9900553)) THEN
+ FBR=6D0*LOG((1D0-ZC)/ZC)
+C...QUARKONIA---
+ ELSEIF(MSTJ(49).EQ.0) THEN
+ FBR=(8D0/3D0)*LOG((1D0-ZC)/ZC)
+ IF(IGLUI.EQ.1.AND.IR.GE.31) FBR=FBR*(9D0/4D0)
+
+C...Integral of Altarelli-Parisi z kernel for scalar gluon.
+ ELSEIF(MSTJ(49).EQ.1.AND.KFL(1).EQ.21) THEN
+ FBR=(PARJ(87)+MSTJ(45)*PARJ(88))*(1D0-2D0*ZC)
+ ELSEIF(MSTJ(49).EQ.1) THEN
+ FBR=(1D0-2D0*ZC)/3D0
+ IF(IGM.EQ.0.AND.M3JC.GE.1) FBR=4D0*FBR
+
+C...Integral of Altarelli-Parisi z kernel for Abelian vector gluon.
+ ELSEIF(KFL(1).EQ.21) THEN
+ FBR=6D0*MSTJ(45)*(0.5D0-ZC)
+ ELSE
+ FBR=2D0*LOG((1D0-ZC)/ZC)
+ ENDIF
+
+C...Reset QCD probability for colourless.
+ IF(ISCOL(IR).EQ.0) FBR=0D0
+
+C...Integral of Altarelli-Parisi kernel for photon emission.
+ FBRE=0D0
+ IF(MSTJ(41).GE.2.AND.ISCHG(IR).EQ.1) THEN
+ IF(KFL(1).LE.18) THEN
+ FBRE=(KCHG(KFL(1),1)/3D0)**2*2D0*LOG((1D0-ZCE)/ZCE)
+ ENDIF
+ IF(MSTJ(41).EQ.10) FBRE=PARJ(84)*FBRE
+ ENDIF
+
+C...Inner veto algorithm starts. Find maximum mass for evolution.
+ 410 PMS=V(IEP(1),5)
+ IF(IGM.GE.0) THEN
+ PM2=0D0
+ DO 420 I=2,NEP
+ PM=P(IEP(I),5)
+ IRI=IREF(IEP(I)-NS)
+ IF(KSH(IRI).EQ.1) PM=PMTH(2,IRI)
+ PM2=PM2+PM
+ 420 CONTINUE
+ PMS=MIN(PMS,(P(IM,5)-PM2)**2)
+ ENDIF
+
+C...Select mass for daughter in QCD evolution.
+ B0=27D0/6D0
+ DO 430 IFF=4,MSTJ(45)
+ IF(PMS.GT.4D0*PMTH(2,IFF)**2) B0=(33D0-2D0*IFF)/6D0
+ 430 CONTINUE
+C...Shift m^2 for evolution in Q^2 = m^2 - m(onshell)^2.
+ PMSC=MAX(0.5D0*PARJ(82),PMS-PMTH(1,IR)**2)
+C...Already predetermined choice.
+ IF(IPSPD.NE.0) THEN
+ PMSQCD=P(IPSPD,5)**2
+ ELSEIF(FBR.LT.1D-3) THEN
+ PMSQCD=0D0
+ ELSEIF(MSTJ(44).LE.0) THEN
+ PMSQCD=PMSC*EXP(MAX(-50D0,LOG(PYR(0))*PARU(2)/(PARU(111)*FBR)))
+ ELSEIF(MSTJ(44).EQ.1) THEN
+ PMSQCD=4D0*ALAMS*(0.25D0*PMSC/ALAMS)**(PYR(0)**(B0/FBR))
+ ELSE
+ PMSQCD=PMSC*EXP(MAX(-50D0,ALFM*B0*LOG(PYR(0))/FBR))
+ ENDIF
+C...Shift back m^2 from evolution in Q^2 = m^2 - m(onshell)^2.
+ IF(IPSPD.EQ.0) PMSQCD=PMSQCD+PMTH(1,IR)**2
+ IF(ZC.GT.0.49D0.OR.PMSQCD.LE.PMTH(4,IR)**2) PMSQCD=PMTH(2,IR)**2
+ V(IEP(1),5)=PMSQCD
+ MCE=1
+
+C...Select mass for daughter in QED evolution.
+ IF(MSTJ(41).GE.2.AND.ISCHG(IR).EQ.1.AND.IPSPD.EQ.0) THEN
+C...Shift m^2 for evolution in Q^2 = m^2 - m(onshell)^2.
+ PMSE=MAX(0.5D0*PARJ(83),PMS-PMTH(1,IR)**2)
+ IF(FBRE.LT.1D-3) THEN
+ PMSQED=0D0
+ ELSE
+ PMSQED=PMSE*EXP(MAX(-50D0,LOG(PYR(0))*PARU(2)/
+ & (PARU(101)*FBRE)))
+ ENDIF
+C...Shift back m^2 from evolution in Q^2 = m^2 - m(onshell)^2.
+ PMSQED=PMSQED+PMTH(1,IR)**2
+ IF(ZCE.GT.0.4999D0.OR.PMSQED.LE.PMTH(5,IR)**2) PMSQED=
+ & PMTH(2,IR)**2
+ IF(PMSQED.GT.PMSQCD) THEN
+ V(IEP(1),5)=PMSQED
+ MCE=2
+ ENDIF
+ ENDIF
+
+C...Check whether daughter mass below cutoff.
+ P(IEP(1),5)=SQRT(V(IEP(1),5))
+ IF(P(IEP(1),5).LE.PMTH(3,IR)) THEN
+ P(IEP(1),5)=PMTH(1,IR)
+ V(IEP(1),5)=P(IEP(1),5)**2
+ GOTO 450
+ ENDIF
+
+C...Already predetermined choice of z, and flavour in g -> qqbar.
+ IF(IPSPD.NE.0) THEN
+ IPSGD1=K(IPSPD,4)
+ IPSGD2=K(IPSPD,5)
+ PMSGD1=P(IPSGD1,5)**2
+ PMSGD2=P(IPSGD2,5)**2
+ ALAMPS=SQRT(MAX(1D-10,(PMSQCD-PMSGD1-PMSGD2)**2-
+ & 4D0*PMSGD1*PMSGD2))
+ Z=0.5D0*(PMSQCD*(2D0*P(IPSGD1,4)/P(IPSPD,4)-1D0)+ALAMPS-
+ & PMSGD1+PMSGD2)/ALAMPS
+ Z=MAX(0.00001D0,MIN(0.99999D0,Z))
+ IF(KFL(1).NE.21) THEN
+ K(IEP(1),5)=21
+ ELSE
+ K(IEP(1),5)=IABS(K(IPSGD1,2))
+ ENDIF
+
+C...Select z value of branching: q -> qgamma.
+ ELSEIF(MCE.EQ.2) THEN
+ Z=1D0-(1D0-ZCE)*(ZCE/(1D0-ZCE))**PYR(0)
+ IF(1D0+Z**2.LT.2D0*PYR(0)) GOTO 410
+ K(IEP(1),5)=22
+
+C...QUARKONIA+++
+C...Select z value of branching: QQ~[3S18] -> QQ~[3S18]g.
+ ELSEIF(MSTJ(49).EQ.0.AND.
+ & (KFL(1).EQ.9900443.OR.KFL(1).EQ.9900553)) THEN
+ Z=(1D0-ZC)*(ZC/(1D0-ZC))**PYR(0)
+C...Select always the harder 'gluon' if the switch MSTP(149)<=0.
+ IF(MSTP(149).LE.0.OR.PYR(0).GT.0.5D0) Z=1D0-Z
+ IF((1D0-Z*(1D0-Z))**2.LT.PYR(0)) GOTO 410
+ K(IEP(1),5)=21
+C...QUARKONIA---
+
+C...Select z value of branching: q -> qg, g -> gg, g -> qqbar.
+ ELSEIF(MSTJ(49).NE.1.AND.KFL(1).NE.21) THEN
+ Z=1D0-(1D0-ZC)*(ZC/(1D0-ZC))**PYR(0)
+C...Only do z weighting when no ME correction afterwards.
+ IF(M3JC.EQ.0.AND.1D0+Z**2.LT.2D0*PYR(0)) GOTO 410
+ K(IEP(1),5)=21
+ ELSEIF(MSTJ(49).EQ.0.AND.MSTJ(45)*0.5D0.LT.PYR(0)*FBR) THEN
+ Z=(1D0-ZC)*(ZC/(1D0-ZC))**PYR(0)
+ IF(PYR(0).GT.0.5D0) Z=1D0-Z
+ IF((1D0-Z*(1D0-Z))**2.LT.PYR(0)) GOTO 410
+ K(IEP(1),5)=21
+ ELSEIF(MSTJ(49).NE.1) THEN
+ Z=PYR(0)
+ IF(Z**2+(1D0-Z)**2.LT.PYR(0)) GOTO 410
+ KFLB=1+INT(MSTJ(45)*PYR(0))
+ PMQ=4D0*PMTH(2,KFLB)**2/V(IEP(1),5)
+ IF(PMQ.GE.1D0) GOTO 410
+ IF(MSTJ(44).LE.2.OR.MSTJ(44).EQ.4) THEN
+ IF(Z.LT.ZC.OR.Z.GT.1D0-ZC) GOTO 410
+ PMQ0=4D0*PMTH(2,21)**2/V(IEP(1),5)
+ IF(MOD(MSTJ(43),2).EQ.0.AND.(1D0+0.5D0*PMQ)*SQRT(1D0-PMQ)
+ & .LT.PYR(0)*(1D0+0.5D0*PMQ0)*SQRT(1D0-PMQ0)) GOTO 410
+ ELSE
+ IF((1D0+0.5D0*PMQ)*SQRT(1D0-PMQ).LT.PYR(0)) GOTO 410
+ ENDIF
+ K(IEP(1),5)=KFLB
+
+C...Ditto for scalar gluon model.
+ ELSEIF(KFL(1).NE.21) THEN
+ Z=1D0-SQRT(ZC**2+PYR(0)*(1D0-2D0*ZC))
+ K(IEP(1),5)=21
+ ELSEIF(PYR(0)*(PARJ(87)+MSTJ(45)*PARJ(88)).LE.PARJ(87)) THEN
+ Z=ZC+(1D0-2D0*ZC)*PYR(0)
+ K(IEP(1),5)=21
+ ELSE
+ Z=ZC+(1D0-2D0*ZC)*PYR(0)
+ KFLB=1+INT(MSTJ(45)*PYR(0))
+ PMQ=4D0*PMTH(2,KFLB)**2/V(IEP(1),5)
+ IF(PMQ.GE.1D0) GOTO 410
+ K(IEP(1),5)=KFLB
+ ENDIF
+
+C...Correct to alpha_s(pT^2) (optionally m^2/4 for g -> q qbar).
+ IF(MCE.EQ.1.AND.MSTJ(44).GE.2.AND.IPSPD.EQ.0) THEN
+ IF(KFL(1).EQ.21.AND.K(IEP(1),5).LT.10.AND.
+ & (MSTJ(44).EQ.3.OR.MSTJ(44).EQ.5)) THEN
+ IF(ALFM/LOG(V(IEP(1),5)*0.25D0/ALAMS).LT.PYR(0)) GOTO 410
+ ELSE
+ PT2APP=Z*(1D0-Z)*V(IEP(1),5)
+ IF(MSTJ(44).GE.4) PT2APP=PT2APP*
+ & (1D0-PMTH(1,IR)**2/V(IEP(1),5))**2
+ IF(PT2APP.LT.PT2MIN) GOTO 410
+ IF(ALFM/LOG(PT2APP/ALAMS).LT.PYR(0)) GOTO 410
+ ENDIF
+ ENDIF
+
+C...Check if z consistent with chosen m.
+ IF(KFL(1).EQ.21) THEN
+ IRGD1=IABS(K(IEP(1),5))
+ IRGD2=IRGD1
+ ELSE
+ IRGD1=IR
+ IRGD2=IABS(K(IEP(1),5))
+ ENDIF
+ IF(NEP.EQ.1) THEN
+ PED=PS(4)
+ ELSEIF(NEP.GE.3) THEN
+ PED=P(IEP(1),4)
+ ELSEIF(IGM.EQ.0.OR.MSTJ(43).LE.2) THEN
+ PED=0.5D0*(V(IM,5)+V(IEP(1),5)-PM2**2)/P(IM,5)
+ ELSE
+ IF(IEP(1).EQ.N+1) PED=V(IM,1)*PEM
+ IF(IEP(1).EQ.N+2) PED=(1D0-V(IM,1))*PEM
+ ENDIF
+ IF(MOD(MSTJ(43),2).EQ.1) THEN
+ PMQTH3=0.5D0*PARJ(82)
+ IF(IRGD2.EQ.22) PMQTH3=0.5D0*PARJ(83)
+ IF(IRGD2.EQ.22.AND.ISCOL(IR).EQ.0) PMQTH3=0.5D0*PARJ(90)
+ PMQ1=(PMTH(1,IRGD1)**2+PMQTH3**2)/V(IEP(1),5)
+ PMQ2=(PMTH(1,IRGD2)**2+PMQTH3**2)/V(IEP(1),5)
+ ZD=SQRT(MAX(0D0,(1D0-V(IEP(1),5)/PED**2)*((1D0-PMQ1-PMQ2)**2-
+ & 4D0*PMQ1*PMQ2)))
+ ZH=1D0+PMQ1-PMQ2
+ ELSE
+ ZD=SQRT(MAX(0D0,1D0-V(IEP(1),5)/PED**2))
+ ZH=1D0
+ ENDIF
+ IF(KFL(1).EQ.21.AND.K(IEP(1),5).LT.10.AND.
+ &(MSTJ(44).EQ.3.OR.MSTJ(44).EQ.5)) THEN
+ ELSEIF(IPSPD.NE.0) THEN
+ ELSE
+ ZL=0.5D0*(ZH-ZD)
+ ZU=0.5D0*(ZH+ZD)
+ IF(Z.LT.ZL.OR.Z.GT.ZU) GOTO 410
+ ENDIF
+ IF(KFL(1).EQ.21) V(IEP(1),3)=LOG(ZU*(1D0-ZL)/MAX(1D-20,ZL*
+ &(1D0-ZU)))
+ IF(KFL(1).NE.21) V(IEP(1),3)=LOG((1D0-ZL)/MAX(1D-10,1D0-ZU))
+
+C...Width suppression for q -> q + g.
+ IF(MSTJ(40).NE.0.AND.KFL(1).NE.21.AND.IPSPD.EQ.0) THEN
+ IF(IGM.EQ.0) THEN
+ EGLU=0.5D0*PS(5)*(1D0-Z)*(1D0+V(IEP(1),5)/V(NS+1,5))
+ ELSE
+ EGLU=PMED*(1D0-Z)
+ ENDIF
+ CHI=PARJ(89)**2/(PARJ(89)**2+EGLU**2)
+ IF(MSTJ(40).EQ.1) THEN
+ IF(CHI.LT.PYR(0)) GOTO 410
+ ELSEIF(MSTJ(40).EQ.2) THEN
+ IF(1D0-CHI.LT.PYR(0)) GOTO 410
+ ENDIF
+ ENDIF
+
+C...Three-jet matrix element correction.
+ IF(M3JC.GE.1) THEN
+ WME=1D0
+ WSHOW=1D0
+
+C...QED matrix elements: only for massless case so far.
+ IF(MCE.EQ.2.AND.IGM.EQ.0) THEN
+ X1=Z*(1D0+V(IEP(1),5)/V(NS+1,5))
+ X2=1D0-V(IEP(1),5)/V(NS+1,5)
+ X3=(1D0-X1)+(1D0-X2)
+ KI1=K(IPA(INUM),2)
+ KI2=K(IPA(3-INUM),2)
+ QF1=KCHG(PYCOMP(KI1),1)*ISIGN(1,KI1)/3D0
+ QF2=KCHG(PYCOMP(KI2),1)*ISIGN(1,KI2)/3D0
+ WSHOW=QF1**2*(1D0-X1)/X3*(1D0+(X1/(2D0-X2))**2)+
+ & QF2**2*(1D0-X2)/X3*(1D0+(X2/(2D0-X1))**2)
+ WME=(QF1*(1D0-X1)/X3-QF2*(1D0-X2)/X3)**2*(X1**2+X2**2)
+ ELSEIF(MCE.EQ.2) THEN
+
+C...QCD matrix elements, including mass effects.
+ ELSEIF(MSTJ(49).NE.1.AND.K(IEP(1),2).NE.21) THEN
+ PS1ME=V(IEP(1),5)
+ PM1ME=PMTH(1,IR)
+ M3JCC=M3JC
+ IF(IR.GE.31.AND.IGM.EQ.0) THEN
+C...QCD ME: original parton, first branching.
+ PM2ME=PMTH(1,63-IR)
+ ECMME=PS(5)
+ ELSEIF(IR.GE.31) THEN
+C...QCD ME: original parton, subsequent branchings.
+ PM2ME=PMTH(1,63-IR)
+ PEDME=PEM*(V(IM,1)+(1D0-V(IM,1))*PS1ME/V(IM,5))
+ ECMME=PEDME+SQRT(MAX(0D0,PEDME**2-PS1ME+PM2ME**2))
+ ELSEIF(K(IM,2).EQ.21) THEN
+C...QCD ME: secondary partons, first branching.
+ PM2ME=PM1ME
+ ZMME=V(IM,1)
+ IF(IEP(1).GT.IEP(2)) ZMME=1D0-ZMME
+ PMLME=SQRT(MAX(0D0,(V(IM,5)-PS1ME-PM2ME**2)**2-
+ & 4D0*PS1ME*PM2ME**2))
+ PEDME=PEM*(0.5D0*(V(IM,5)-PMLME+PS1ME-PM2ME**2)+PMLME*ZMME)/
+ & V(IM,5)
+ ECMME=PEDME+SQRT(MAX(0D0,PEDME**2-PS1ME+PM2ME**2))
+ M3JCC=66
+ ELSE
+C...QCD ME: secondary partons, subsequent branchings.
+ PM2ME=PM1ME
+ PEDME=PEM*(V(IM,1)+(1D0-V(IM,1))*PS1ME/V(IM,5))
+ ECMME=PEDME+SQRT(MAX(0D0,PEDME**2-PS1ME+PM2ME**2))
+ M3JCC=66
+ ENDIF
+C...Construct ME variables.
+ R1ME=PM1ME/ECMME
+ R2ME=PM2ME/ECMME
+ X1=(1D0+PS1ME/ECMME**2-R2ME**2)*(Z+(1D0-Z)*PM1ME**2/PS1ME)
+ X2=1D0+R2ME**2-PS1ME/ECMME**2
+C...Call ME, with right order important for two inequivalent showerers.
+ IF(IR.EQ.IORD+30) THEN
+ WME=PYMAEL(M3JCC,X1,X2,R1ME,R2ME,ALPHA)
+ ELSE
+ WME=PYMAEL(M3JCC,X2,X1,R2ME,R1ME,ALPHA)
+ ENDIF
+C...Split up total ME when two radiating partons.
+ ISPRAD=1
+ IF((M3JCC.GE.16.AND.M3JCC.LE.19).OR.
+ & (M3JCC.GE.26.AND.M3JCC.LE.29).OR.
+ & (M3JCC.GE.36.AND.M3JCC.LE.39).OR.
+ & (M3JCC.GE.46.AND.M3JCC.LE.49).OR.
+ & (M3JCC.GE.56.AND.M3JCC.LE.64)) ISPRAD=0
+ IF(ISPRAD.EQ.1) WME=WME*MAX(1D-10,1D0+R1ME**2-R2ME**2-X1)/
+ & MAX(1D-10,2D0-X1-X2)
+C...Evaluate shower rate to be compared with.
+ WSHOW=2D0/(MAX(1D-10,2D0-X1-X2)*
+ & MAX(1D-10,1D0+R2ME**2-R1ME**2-X2))
+ IF(IGLUI.EQ.1.AND.IR.GE.31) WSHOW=(9D0/4D0)*WSHOW
+ ELSEIF(MSTJ(49).NE.1) THEN
+
+C...Toy model scalar theory matrix elements; no mass effects.
+ ELSE
+ X1=Z*(1D0+V(IEP(1),5)/V(NS+1,5))
+ X2=1D0-V(IEP(1),5)/V(NS+1,5)
+ X3=(1D0-X1)+(1D0-X2)
+ WSHOW=4D0*X3*((1D0-X1)/(2D0-X2)**2+(1D0-X2)/(2D0-X1)**2)
+ WME=X3**2
+ IF(MSTJ(102).GE.2) WME=X3**2-2D0*(1D0+X3)*(1D0-X1)*(1D0-X2)*
+ & PARJ(171)
+ ENDIF
+
+ IF(WME.LT.PYR(0)*WSHOW) GOTO 410
+ ENDIF
+
+C...Impose angular ordering by rejection of nonordered emission.
+ IF(MCE.EQ.1.AND.IGM.GT.0.AND.MSTJ(42).GE.2.AND.IPSPD.EQ.0) THEN
+ PEMAO=V(IM,1)*P(IM,4)
+ IF(IEP(1).EQ.N+2) PEMAO=(1D0-V(IM,1))*P(IM,4)
+ IF(IR.GE.31.AND.MSTJ(42).GE.5) THEN
+ MAOD=0
+ ELSEIF(KFL(1).EQ.21.AND.K(IEP(1),5).LE.10.AND.(MSTJ(42).EQ.4
+ & .OR.MSTJ(42).EQ.7)) THEN
+ MAOD=0
+ ELSEIF(KFL(1).EQ.21.AND.K(IEP(1),5).LE.10.AND.(MSTJ(42).EQ.3
+ & .OR.MSTJ(42).EQ.6)) THEN
+ MAOD=1
+ PMDAO=PMTH(2,K(IEP(1),5))
+ THE2ID=Z*(1D0-Z)*PEMAO**2/(V(IEP(1),5)-4D0*PMDAO**2)
+ ELSE
+ MAOD=1
+ THE2ID=Z*(1D0-Z)*PEMAO**2/V(IEP(1),5)
+ IF(MSTJ(42).GE.3.AND.MSTJ(42).NE.5) THE2ID=THE2ID*
+ & (1D0+PMTH(1,IR)**2*(1D0-Z)/(V(IEP(1),5)*Z))**2
+ ENDIF
+ MAOM=1
+ IAOM=IM
+ 440 IF(K(IAOM,5).EQ.22) THEN
+ IAOM=K(IAOM,3)
+ IF(K(IAOM,3).LE.NS) MAOM=0
+ IF(MAOM.EQ.1) GOTO 440
+ ENDIF
+ IF(MAOM.EQ.1.AND.MAOD.EQ.1) THEN
+ THE2IM=V(IAOM,1)*(1D0-V(IAOM,1))*P(IAOM,4)**2/V(IAOM,5)
+ IF(THE2ID.LT.THE2IM) GOTO 410
+ ENDIF
+ ENDIF
+
+C...Impose user-defined maximum angle at first branching.
+ IF(MSTJ(48).EQ.1.AND.IPSPD.EQ.0) THEN
+ IF(NEP.EQ.1.AND.IM.EQ.NS) THEN
+ THE2ID=Z*(1D0-Z)*PS(4)**2/V(IEP(1),5)
+ IF(PARJ(85)**2*THE2ID.LT.1D0) GOTO 410
+ ELSEIF(NEP.EQ.2.AND.IEP(1).EQ.NS+2) THEN
+ THE2ID=Z*(1D0-Z)*(0.5D0*P(IM,4))**2/V(IEP(1),5)
+ IF(PARJ(85)**2*THE2ID.LT.1D0) GOTO 410
+ ELSEIF(NEP.EQ.2.AND.IEP(1).EQ.NS+3) THEN
+ THE2ID=Z*(1D0-Z)*(0.5D0*P(IM,4))**2/V(IEP(1),5)
+ IF(PARJ(86)**2*THE2ID.LT.1D0) GOTO 410
+ ENDIF
+ ENDIF
+
+C...Impose angular constraint in first branching from interference
+C...with initial state partons.
+ IF(MIIS.GE.2.AND.IEP(1).LE.NS+3) THEN
+ THE2D=MAX((1D0-Z)/Z,Z/(1D0-Z))*V(IEP(1),5)/(0.5D0*P(IM,4))**2
+ IF(IEP(1).EQ.NS+2.AND.ISII(1).GE.1) THEN
+ IF(THE2D.GT.THEIIS(1,ISII(1))**2) GOTO 410
+ ELSEIF(IEP(1).EQ.NS+3.AND.ISII(2).GE.1) THEN
+ IF(THE2D.GT.THEIIS(2,ISII(2))**2) GOTO 410
+ ENDIF
+ ENDIF
+
+C...End of inner veto algorithm. Check if only one leg evolved so far.
+ 450 V(IEP(1),1)=Z
+ ISL(1)=0
+ ISL(2)=0
+ IF(NEP.EQ.1) GOTO 490
+ IF(NEP.EQ.2.AND.P(IEP(1),5)+P(IEP(2),5).GE.P(IM,5)) GOTO 350
+ DO 460 I=1,NEP
+ IR=IREF(N+I-NS)
+ IF(ITRY(I).EQ.0.AND.KSH(IR).EQ.1) THEN
+ IF(P(N+I,5).GE.PMTH(2,IR)) GOTO 350
+ ENDIF
+ 460 CONTINUE
+
+C...Check if chosen multiplet m1,m2,z1,z2 is physical.
+ IF(NEP.GE.3) THEN
+ PMSUM=0D0
+ DO 470 I=1,NEP
+ PMSUM=PMSUM+P(N+I,5)
+ 470 CONTINUE
+ IF(PMSUM.GE.PS(5)) GOTO 350
+ ELSEIF(IGM.EQ.0.OR.MSTJ(43).LE.2.OR.MOD(MSTJ(43),2).EQ.0) THEN
+ DO 480 I1=N+1,N+2
+ IRDA=IREF(I1-NS)
+ IF(KSH(IRDA).EQ.0) GOTO 480
+ IF(P(I1,5).LT.PMTH(2,IRDA)) GOTO 480
+ IF(IRDA.EQ.21) THEN
+ IRGD1=IABS(K(I1,5))
+ IRGD2=IRGD1
+ ELSE
+ IRGD1=IRDA
+ IRGD2=IABS(K(I1,5))
+ ENDIF
+ I2=2*N+3-I1
+ IF(IGM.EQ.0.OR.MSTJ(43).LE.2) THEN
+ PED=0.5D0*(V(IM,5)+V(I1,5)-V(I2,5))/P(IM,5)
+ ELSE
+ IF(I1.EQ.N+1) ZM=V(IM,1)
+ IF(I1.EQ.N+2) ZM=1D0-V(IM,1)
+ PML=SQRT((V(IM,5)-V(N+1,5)-V(N+2,5))**2-
+ & 4D0*V(N+1,5)*V(N+2,5))
+ PED=PEM*(0.5D0*(V(IM,5)-PML+V(I1,5)-V(I2,5))+PML*ZM)/
+ & V(IM,5)
+ ENDIF
+ IF(MOD(MSTJ(43),2).EQ.1) THEN
+ PMQTH3=0.5D0*PARJ(82)
+ IF(IRGD2.EQ.22) PMQTH3=0.5D0*PARJ(83)
+ IF(IRGD2.EQ.22.AND.ISCOL(IRDA).EQ.0) PMQTH3=0.5D0*PARJ(90)
+ PMQ1=(PMTH(1,IRGD1)**2+PMQTH3**2)/V(I1,5)
+ PMQ2=(PMTH(1,IRGD2)**2+PMQTH3**2)/V(I1,5)
+ ZD=SQRT(MAX(0D0,(1D0-V(I1,5)/PED**2)*((1D0-PMQ1-PMQ2)**2-
+ & 4D0*PMQ1*PMQ2)))
+ ZH=1D0+PMQ1-PMQ2
+ ELSE
+ ZD=SQRT(MAX(0D0,1D0-V(I1,5)/PED**2))
+ ZH=1D0
+ ENDIF
+ IF(IRDA.EQ.21.AND.IRGD1.LT.10.AND.
+ & (MSTJ(44).EQ.3.OR.MSTJ(44).EQ.5)) THEN
+ ELSE
+ ZL=0.5D0*(ZH-ZD)
+ ZU=0.5D0*(ZH+ZD)
+ IF(I1.EQ.N+1.AND.(V(I1,1).LT.ZL.OR.V(I1,1).GT.ZU).AND.
+ & ISSET(1).EQ.0) THEN
+ ISL(1)=1
+ ELSEIF(I1.EQ.N+2.AND.(V(I1,1).LT.ZL.OR.V(I1,1).GT.ZU).AND.
+ & ISSET(2).EQ.0) THEN
+ ISL(2)=1
+ ENDIF
+ ENDIF
+ IF(IRDA.EQ.21) V(I1,4)=LOG(ZU*(1D0-ZL)/MAX(1D-20,
+ & ZL*(1D0-ZU)))
+ IF(IRDA.NE.21) V(I1,4)=LOG((1D0-ZL)/MAX(1D-10,1D0-ZU))
+ 480 CONTINUE
+ IF(ISL(1).EQ.1.AND.ISL(2).EQ.1.AND.ISLM.NE.0) THEN
+ ISL(3-ISLM)=0
+ ISLM=3-ISLM
+ ELSEIF(ISL(1).EQ.1.AND.ISL(2).EQ.1) THEN
+ ZDR1=MAX(0D0,V(N+1,3)/MAX(1D-6,V(N+1,4))-1D0)
+ ZDR2=MAX(0D0,V(N+2,3)/MAX(1D-6,V(N+2,4))-1D0)
+ IF(ZDR2.GT.PYR(0)*(ZDR1+ZDR2)) ISL(1)=0
+ IF(ISL(1).EQ.1) ISL(2)=0
+ IF(ISL(1).EQ.0) ISLM=1
+ IF(ISL(2).EQ.0) ISLM=2
+ ENDIF
+ IF(ISL(1).EQ.1.OR.ISL(2).EQ.1) GOTO 350
+ ENDIF
+ IRD1=IREF(N+1-NS)
+ IRD2=IREF(N+2-NS)
+ IF(IGM.GT.0) THEN
+ IF(MOD(MSTJ(43),2).EQ.1.AND.(P(N+1,5).GE.
+ & PMTH(2,IRD1).OR.P(N+2,5).GE.PMTH(2,IRD2))) THEN
+ PMQ1=V(N+1,5)/V(IM,5)
+ PMQ2=V(N+2,5)/V(IM,5)
+ ZD=SQRT(MAX(0D0,(1D0-V(IM,5)/PEM**2)*((1D0-PMQ1-PMQ2)**2-
+ & 4D0*PMQ1*PMQ2)))
+ ZH=1D0+PMQ1-PMQ2
+ ZL=0.5D0*(ZH-ZD)
+ ZU=0.5D0*(ZH+ZD)
+ IF(V(IM,1).LT.ZL.OR.V(IM,1).GT.ZU) GOTO 350
+ ENDIF
+ ENDIF
+
+C...Accepted branch. Construct four-momentum for initial partons.
+ 490 MAZIP=0
+ MAZIC=0
+ IF(NEP.EQ.1) THEN
+ P(N+1,1)=0D0
+ P(N+1,2)=0D0
+ P(N+1,3)=SQRT(MAX(0D0,(P(IPA(1),4)+P(N+1,5))*(P(IPA(1),4)-
+ & P(N+1,5))))
+ P(N+1,4)=P(IPA(1),4)
+ V(N+1,2)=P(N+1,4)
+ ELSEIF(IGM.EQ.0.AND.NEP.EQ.2) THEN
+ PED1=0.5D0*(V(IM,5)+V(N+1,5)-V(N+2,5))/P(IM,5)
+ P(N+1,1)=0D0
+ P(N+1,2)=0D0
+ P(N+1,3)=SQRT(MAX(0D0,(PED1+P(N+1,5))*(PED1-P(N+1,5))))
+ P(N+1,4)=PED1
+ P(N+2,1)=0D0
+ P(N+2,2)=0D0
+ P(N+2,3)=-P(N+1,3)
+ P(N+2,4)=P(IM,5)-PED1
+ V(N+1,2)=P(N+1,4)
+ V(N+2,2)=P(N+2,4)
+ ELSEIF(NEP.GE.3) THEN
+C...Rescale all momenta for energy conservation.
+ LOOP=0
+ PES=0D0
+ PQS=0D0
+ DO 510 I=1,NEP
+ DO 500 J=1,4
+ P(N+I,J)=P(IPA(I),J)
+ 500 CONTINUE
+ PES=PES+P(N+I,4)
+ PQS=PQS+P(N+I,5)**2/P(N+I,4)
+ 510 CONTINUE
+ 520 LOOP=LOOP+1
+ FAC=(PS(5)-PQS)/(PES-PQS)
+ PES=0D0
+ PQS=0D0
+ DO 540 I=1,NEP
+ DO 530 J=1,3
+ P(N+I,J)=FAC*P(N+I,J)
+ 530 CONTINUE
+ P(N+I,4)=SQRT(P(N+I,5)**2+P(N+I,1)**2+P(N+I,2)**2+P(N+I,3)**2)
+ V(N+I,2)=P(N+I,4)
+ PES=PES+P(N+I,4)
+ PQS=PQS+P(N+I,5)**2/P(N+I,4)
+ 540 CONTINUE
+ IF(LOOP.LT.10.AND.ABS(PES-PS(5)).GT.1D-12*PS(5)) GOTO 520
+
+C...Construct transverse momentum for ordinary branching in shower.
+ ELSE
+ ZM=V(IM,1)
+ LOOPPT=0
+ 550 LOOPPT=LOOPPT+1
+ PZM=SQRT(MAX(0D0,(PEM+P(IM,5))*(PEM-P(IM,5))))
+ PMLS=(V(IM,5)-V(N+1,5)-V(N+2,5))**2-4D0*V(N+1,5)*V(N+2,5)
+ IF(PZM.LE.0D0) THEN
+ PTS=0D0
+ ELSEIF(K(IM,2).EQ.21.AND.IABS(K(N+1,2)).LE.10.AND.
+ & (MSTJ(44).EQ.3.OR.MSTJ(44).EQ.5)) THEN
+ PTS=PMLS*ZM*(1D0-ZM)/V(IM,5)
+ ELSEIF(MOD(MSTJ(43),2).EQ.1) THEN
+ PTS=(PEM**2*(ZM*(1D0-ZM)*V(IM,5)-(1D0-ZM)*V(N+1,5)-
+ & ZM*V(N+2,5))-0.25D0*PMLS)/PZM**2
+ ELSE
+ PTS=PMLS*(ZM*(1D0-ZM)*PEM**2/V(IM,5)-0.25D0)/PZM**2
+ ENDIF
+ IF(PTS.LT.0D0.AND.LOOPPT.LT.10) THEN
+ ZM=0.05D0+0.9D0*ZM
+ GOTO 550
+ ELSEIF(PTS.LT.0D0) THEN
+ GOTO 280
+ ENDIF
+ PT=SQRT(MAX(0D0,PTS))
+
+C...Global statistics.
+ MINT(353)=MINT(353)+1
+ VINT(353)=VINT(353)+PT
+ IF (MINT(353).EQ.1) VINT(358)=PT
+
+C...Find coefficient of azimuthal asymmetry due to gluon polarization.
+ HAZIP=0D0
+ IF(MSTJ(49).NE.1.AND.MOD(MSTJ(46),2).EQ.1.AND.K(IM,2).EQ.21
+ & .AND.IAU.NE.0) THEN
+ IF(K(IGM,3).NE.0) MAZIP=1
+ ZAU=V(IGM,1)
+ IF(IAU.EQ.IM+1) ZAU=1D0-V(IGM,1)
+ IF(MAZIP.EQ.0) ZAU=0D0
+ IF(K(IGM,2).NE.21) THEN
+ HAZIP=2D0*ZAU/(1D0+ZAU**2)
+ ELSE
+ HAZIP=(ZAU/(1D0-ZAU*(1D0-ZAU)))**2
+ ENDIF
+ IF(K(N+1,2).NE.21) THEN
+ HAZIP=HAZIP*(-2D0*ZM*(1D0-ZM))/(1D0-2D0*ZM*(1D0-ZM))
+ ELSE
+ HAZIP=HAZIP*(ZM*(1D0-ZM)/(1D0-ZM*(1D0-ZM)))**2
+ ENDIF
+ ENDIF
+
+C...Find coefficient of azimuthal asymmetry due to soft gluon
+C...interference.
+ HAZIC=0D0
+ IF(MSTJ(49).NE.2.AND.MSTJ(46).GE.2.AND.(K(N+1,2).EQ.21.OR.
+ & K(N+2,2).EQ.21).AND.IAU.NE.0) THEN
+ IF(K(IGM,3).NE.0) MAZIC=N+1
+ IF(K(IGM,3).NE.0.AND.K(N+1,2).NE.21) MAZIC=N+2
+ IF(K(IGM,3).NE.0.AND.K(N+1,2).EQ.21.AND.K(N+2,2).EQ.21.AND.
+ & ZM.GT.0.5D0) MAZIC=N+2
+ IF(K(IAU,2).EQ.22) MAZIC=0
+ ZS=ZM
+ IF(MAZIC.EQ.N+2) ZS=1D0-ZM
+ ZGM=V(IGM,1)
+ IF(IAU.EQ.IM-1) ZGM=1D0-V(IGM,1)
+ IF(MAZIC.EQ.0) ZGM=1D0
+ IF(MAZIC.NE.0) HAZIC=(P(IM,5)/P(IGM,5))*
+ & SQRT((1D0-ZS)*(1D0-ZGM)/(ZS*ZGM))
+ HAZIC=MIN(0.95D0,HAZIC)
+ ENDIF
+ ENDIF
+
+C...Construct energies for ordinary branching in shower.
+ 560 IF(NEP.EQ.2.AND.IGM.GT.0) THEN
+ IF(K(IM,2).EQ.21.AND.IABS(K(N+1,2)).LE.10.AND.
+ & (MSTJ(44).EQ.3.OR.MSTJ(44).EQ.5)) THEN
+ P(N+1,4)=0.5D0*(PEM*(V(IM,5)+V(N+1,5)-V(N+2,5))+
+ & PZM*SQRT(MAX(0D0,PMLS))*(2D0*ZM-1D0))/V(IM,5)
+ ELSEIF(MOD(MSTJ(43),2).EQ.1) THEN
+ P(N+1,4)=PEM*V(IM,1)
+ ELSE
+ P(N+1,4)=PEM*(0.5D0*(V(IM,5)-SQRT(PMLS)+V(N+1,5)-V(N+2,5))+
+ & SQRT(PMLS)*ZM)/V(IM,5)
+ ENDIF
+
+C...Already predetermined choice of phi angle or not
+ PHI=PARU(2)*PYR(0)
+ IF(MPSPD.EQ.1.AND.IGM.EQ.NS+1) THEN
+ IPSPD=IP1+IM-NS-2
+ IF(K(IPSPD,4).GT.0) THEN
+ IPSGD1=K(IPSPD,4)
+ IF(IM.EQ.NS+2) THEN
+ PHI=PYANGL(P(IPSGD1,1),P(IPSGD1,2))
+ ELSE
+ PHI=PYANGL(-P(IPSGD1,1),P(IPSGD1,2))
+ ENDIF
+ ENDIF
+ ELSEIF(MPSPD.EQ.1.AND.IGM.EQ.NS+2) THEN
+ IPSPD=IP1+IM-NS-2
+ IF(K(IPSPD,4).GT.0) THEN
+ IPSGD1=K(IPSPD,4)
+ PHIPSM=PYANGL(P(IPSPD,1),P(IPSPD,2))
+ THEPSM=PYANGL(P(IPSPD,3),SQRT(P(IPSPD,1)**2+P(IPSPD,2)**2))
+ CALL PYROBO(IPSGD1,IPSGD1,0D0,-PHIPSM,0D0,0D0,0D0)
+ CALL PYROBO(IPSGD1,IPSGD1,-THEPSM,0D0,0D0,0D0,0D0)
+ PHI=PYANGL(P(IPSGD1,1),P(IPSGD1,2))
+ CALL PYROBO(IPSGD1,IPSGD1,THEPSM,PHIPSM,0D0,0D0,0D0)
+ ENDIF
+ ENDIF
+
+C...Construct momenta for ordinary branching in shower.
+ P(N+1,1)=PT*COS(PHI)
+ P(N+1,2)=PT*SIN(PHI)
+ IF(K(IM,2).EQ.21.AND.IABS(K(N+1,2)).LE.10.AND.
+ & (MSTJ(44).EQ.3.OR.MSTJ(44).EQ.5)) THEN
+ P(N+1,3)=0.5D0*(PZM*(V(IM,5)+V(N+1,5)-V(N+2,5))+
+ & PEM*SQRT(MAX(0D0,PMLS))*(2D0*ZM-1D0))/V(IM,5)
+ ELSEIF(PZM.GT.0D0) THEN
+ P(N+1,3)=0.5D0*(V(N+2,5)-V(N+1,5)-V(IM,5)+
+ & 2D0*PEM*P(N+1,4))/PZM
+ ELSE
+ P(N+1,3)=0D0
+ ENDIF
+ P(N+2,1)=-P(N+1,1)
+ P(N+2,2)=-P(N+1,2)
+ P(N+2,3)=PZM-P(N+1,3)
+ P(N+2,4)=PEM-P(N+1,4)
+ IF(MSTJ(43).LE.2) THEN
+ V(N+1,2)=(PEM*P(N+1,4)-PZM*P(N+1,3))/P(IM,5)
+ V(N+2,2)=(PEM*P(N+2,4)-PZM*P(N+2,3))/P(IM,5)
+ ENDIF
+ ENDIF
+
+C...Rotate and boost daughters.
+ IF(IGM.GT.0) THEN
+ IF(MSTJ(43).LE.2) THEN
+ BEX=P(IGM,1)/P(IGM,4)
+ BEY=P(IGM,2)/P(IGM,4)
+ BEZ=P(IGM,3)/P(IGM,4)
+ GA=P(IGM,4)/P(IGM,5)
+ GABEP=GA*(GA*(BEX*P(IM,1)+BEY*P(IM,2)+BEZ*P(IM,3))/(1D0+GA)-
+ & P(IM,4))
+ ELSE
+ BEX=0D0
+ BEY=0D0
+ BEZ=0D0
+ GA=1D0
+ GABEP=0D0
+ ENDIF
+ PTIMB=SQRT((P(IM,1)+GABEP*BEX)**2+(P(IM,2)+GABEP*BEY)**2)
+ THE=PYANGL(P(IM,3)+GABEP*BEZ,PTIMB)
+ IF(PTIMB.GT.1D-4) THEN
+ PHI=PYANGL(P(IM,1)+GABEP*BEX,P(IM,2)+GABEP*BEY)
+ ELSE
+ PHI=0D0
+ ENDIF
+ DO 570 I=N+1,N+2
+ DP(1)=COS(THE)*COS(PHI)*P(I,1)-SIN(PHI)*P(I,2)+
+ & SIN(THE)*COS(PHI)*P(I,3)
+ DP(2)=COS(THE)*SIN(PHI)*P(I,1)+COS(PHI)*P(I,2)+
+ & SIN(THE)*SIN(PHI)*P(I,3)
+ DP(3)=-SIN(THE)*P(I,1)+COS(THE)*P(I,3)
+ DP(4)=P(I,4)
+ DBP=BEX*DP(1)+BEY*DP(2)+BEZ*DP(3)
+ DGABP=GA*(GA*DBP/(1D0+GA)+DP(4))
+ P(I,1)=DP(1)+DGABP*BEX
+ P(I,2)=DP(2)+DGABP*BEY
+ P(I,3)=DP(3)+DGABP*BEZ
+ P(I,4)=GA*(DP(4)+DBP)
+ 570 CONTINUE
+ ENDIF
+
+C...Weight with azimuthal distribution, if required.
+ IF(MAZIP.NE.0.OR.MAZIC.NE.0) THEN
+ DO 580 J=1,3
+ DPT(1,J)=P(IM,J)
+ DPT(2,J)=P(IAU,J)
+ DPT(3,J)=P(N+1,J)
+ 580 CONTINUE
+ DPMA=DPT(1,1)*DPT(2,1)+DPT(1,2)*DPT(2,2)+DPT(1,3)*DPT(2,3)
+ DPMD=DPT(1,1)*DPT(3,1)+DPT(1,2)*DPT(3,2)+DPT(1,3)*DPT(3,3)
+ DPMM=DPT(1,1)**2+DPT(1,2)**2+DPT(1,3)**2
+ DO 590 J=1,3
+ DPT(4,J)=DPT(2,J)-DPMA*DPT(1,J)/MAX(1D-10,DPMM)
+ DPT(5,J)=DPT(3,J)-DPMD*DPT(1,J)/MAX(1D-10,DPMM)
+ 590 CONTINUE
+ DPT(4,4)=SQRT(DPT(4,1)**2+DPT(4,2)**2+DPT(4,3)**2)
+ DPT(5,4)=SQRT(DPT(5,1)**2+DPT(5,2)**2+DPT(5,3)**2)
+ IF(MIN(DPT(4,4),DPT(5,4)).GT.0.1D0*PARJ(82)) THEN
+ CAD=(DPT(4,1)*DPT(5,1)+DPT(4,2)*DPT(5,2)+
+ & DPT(4,3)*DPT(5,3))/(DPT(4,4)*DPT(5,4))
+ IF(MAZIP.NE.0) THEN
+ IF(1D0+HAZIP*(2D0*CAD**2-1D0).LT.PYR(0)*(1D0+ABS(HAZIP)))
+ & GOTO 560
+ ENDIF
+ IF(MAZIC.NE.0) THEN
+ IF(MAZIC.EQ.N+2) CAD=-CAD
+ IF((1D0-HAZIC)*(1D0-HAZIC*CAD)/(1D0+HAZIC**2-2D0*HAZIC*CAD)
+ & .LT.PYR(0)) GOTO 560
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...Azimuthal anisotropy due to interference with initial state partons.
+ IF(MOD(MIIS,2).EQ.1.AND.IGM.EQ.NS+1.AND.(K(N+1,2).EQ.21.OR.
+ &K(N+2,2).EQ.21)) THEN
+ III=IM-NS-1
+ IF(ISII(III).GE.1) THEN
+ IAZIID=N+1
+ IF(K(N+1,2).NE.21) IAZIID=N+2
+ IF(K(N+1,2).EQ.21.AND.K(N+2,2).EQ.21.AND.
+ & P(N+1,4).GT.P(N+2,4)) IAZIID=N+2
+ THEIID=PYANGL(P(IAZIID,3),SQRT(P(IAZIID,1)**2+P(IAZIID,2)**2))
+ IF(III.EQ.2) THEIID=PARU(1)-THEIID
+ PHIIID=PYANGL(P(IAZIID,1),P(IAZIID,2))
+ HAZII=MIN(0.95D0,THEIID/THEIIS(III,ISII(III)))
+ CAD=COS(PHIIID-PHIIIS(III,ISII(III)))
+ PHIREL=ABS(PHIIID-PHIIIS(III,ISII(III)))
+ IF(PHIREL.GT.PARU(1)) PHIREL=PARU(2)-PHIREL
+ IF((1D0-HAZII)*(1D0-HAZII*CAD)/(1D0+HAZII**2-2D0*HAZII*CAD)
+ & .LT.PYR(0)) GOTO 560
+ ENDIF
+ ENDIF
+
+C...Continue loop over partons that may branch, until none left.
+ IF(IGM.GE.0) K(IM,1)=14
+ N=N+NEP
+ NEP=2
+ IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
+ CALL PYERRM(11,'(PYSHOW:) no more memory left in PYJETS')
+ IF(MSTU(21).GE.1) N=NS
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ GOTO 290
+
+C...Set information on imagined shower initiator.
+ 600 IF(NPA.GE.2) THEN
+ K(NS+1,1)=11
+ K(NS+1,2)=94
+ K(NS+1,3)=IP1
+ IF(IP2.GT.0.AND.IP2.LT.IP1) K(NS+1,3)=IP2
+ K(NS+1,4)=NS+2
+ K(NS+1,5)=NS+1+NPA
+ IIM=1
+ ELSE
+ IIM=0
+ ENDIF
+
+C...Reconstruct string drawing information.
+ DO 610 I=NS+1+IIM,N
+ KQ=KCHG(PYCOMP(K(I,2)),2)
+ IF(K(I,1).LE.10.AND.K(I,2).EQ.22) THEN
+ K(I,1)=1
+ ELSEIF(K(I,1).LE.10.AND.IABS(K(I,2)).GE.11.AND.
+ & IABS(K(I,2)).LE.18) THEN
+ K(I,1)=1
+ ELSEIF(K(I,1).LE.10) THEN
+ K(I,4)=MSTU(5)*(K(I,4)/MSTU(5))
+ K(I,5)=MSTU(5)*(K(I,5)/MSTU(5))
+ ELSEIF(K(MOD(K(I,4),MSTU(5))+1,2).NE.22) THEN
+ ID1=MOD(K(I,4),MSTU(5))
+ IF(KQ.EQ.1.AND.K(I,2).GT.0) ID1=MOD(K(I,4),MSTU(5))+1
+ IF(KQ.EQ.2.AND.(K(ID1,2).EQ.21.OR.K(ID1+1,2).EQ.21).AND.
+ & PYR(0).GT.0.5D0) ID1=MOD(K(I,4),MSTU(5))+1
+ ID2=2*MOD(K(I,4),MSTU(5))+1-ID1
+ K(I,4)=MSTU(5)*(K(I,4)/MSTU(5))+ID1
+ K(I,5)=MSTU(5)*(K(I,5)/MSTU(5))+ID2
+ K(ID1,4)=K(ID1,4)+MSTU(5)*I
+ K(ID1,5)=K(ID1,5)+MSTU(5)*ID2
+ K(ID2,4)=K(ID2,4)+MSTU(5)*ID1
+ K(ID2,5)=K(ID2,5)+MSTU(5)*I
+ ELSE
+ ID1=MOD(K(I,4),MSTU(5))
+ ID2=ID1+1
+ K(I,4)=MSTU(5)*(K(I,4)/MSTU(5))+ID1
+ K(I,5)=MSTU(5)*(K(I,5)/MSTU(5))+ID1
+ IF(KQ.EQ.1.OR.K(ID1,1).GE.11) THEN
+ K(ID1,4)=K(ID1,4)+MSTU(5)*I
+ K(ID1,5)=K(ID1,5)+MSTU(5)*I
+ ELSE
+ K(ID1,4)=0
+ K(ID1,5)=0
+ ENDIF
+ K(ID2,4)=0
+ K(ID2,5)=0
+ ENDIF
+ 610 CONTINUE
+
+C...Transformation from CM frame.
+ IF(NPA.EQ.1) THEN
+ THE=PYANGL(P(IPA(1),3),SQRT(P(IPA(1),1)**2+P(IPA(1),2)**2))
+ PHI=PYANGL(P(IPA(1),1),P(IPA(1),2))
+ MSTU(33)=1
+ CALL PYROBO(NS+1,N,THE,PHI,0D0,0D0,0D0)
+ ELSEIF(NPA.EQ.2) THEN
+ BEX=PS(1)/PS(4)
+ BEY=PS(2)/PS(4)
+ BEZ=PS(3)/PS(4)
+ GA=PS(4)/PS(5)
+ GABEP=GA*(GA*(BEX*P(IPA(1),1)+BEY*P(IPA(1),2)+BEZ*P(IPA(1),3))
+ & /(1D0+GA)-P(IPA(1),4))
+ THE=PYANGL(P(IPA(1),3)+GABEP*BEZ,SQRT((P(IPA(1),1)
+ & +GABEP*BEX)**2+(P(IPA(1),2)+GABEP*BEY)**2))
+ PHI=PYANGL(P(IPA(1),1)+GABEP*BEX,P(IPA(1),2)+GABEP*BEY)
+ MSTU(33)=1
+ CALL PYROBO(NS+1,N,THE,PHI,BEX,BEY,BEZ)
+ ELSE
+ CALL PYROBO(IPA(1),IPA(NPA),0D0,0D0,PS(1)/PS(4),PS(2)/PS(4),
+ & PS(3)/PS(4))
+ MSTU(33)=1
+ CALL PYROBO(NS+1,N,0D0,0D0,PS(1)/PS(4),PS(2)/PS(4),PS(3)/PS(4))
+ ENDIF
+
+C...Decay vertex of shower.
+ DO 630 I=NS+1,N
+ DO 620 J=1,5
+ V(I,J)=V(IP1,J)
+ 620 CONTINUE
+ 630 CONTINUE
+
+C...Delete trivial shower, else connect initiators.
+ IF(N.LE.NS+NPA+IIM) THEN
+ N=NS
+ ELSE
+ DO 640 IP=1,NPA
+ K(IPA(IP),1)=14
+ K(IPA(IP),4)=K(IPA(IP),4)+NS+IIM+IP
+ K(IPA(IP),5)=K(IPA(IP),5)+NS+IIM+IP
+ K(NS+IIM+IP,3)=IPA(IP)
+ IF(IIM.EQ.1.AND.MSTU(16).NE.2) K(NS+IIM+IP,3)=NS+1
+ IF(K(NS+IIM+IP,1).NE.1) THEN
+ K(NS+IIM+IP,4)=MSTU(5)*IPA(IP)+K(NS+IIM+IP,4)
+ K(NS+IIM+IP,5)=MSTU(5)*IPA(IP)+K(NS+IIM+IP,5)
+ ENDIF
+ 640 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPTFS
+C...Generates pT-ordered timelike final-state parton showers.
+
+C...MODE defines how to find radiators and recoilers.
+C... = 0 : based on colour flow between undecayed partons.
+C... = 1 : for IPART <= NPARTD only consider primary partons,
+C... whether decayed or not; else as above.
+C... = 2 : based on common history, whether decayed or not.
+
+ SUBROUTINE PYPTFS(MODE,PTMAX,PTMIN,PTGEN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Parameter statement for maximum size of showers.
+ PARAMETER (MAXNUR=1000)
+C...Commonblocks.
+ COMMON/PYPART/NPART,NPARTD,IPART(MAXNUR),PTPART(MAXNUR)
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYPART/,/PYJETS/,/PYCTAG/,/PYDAT1/,/PYDAT2/,/PYPARS/,
+ &/PYINT1/
+C...Local arrays.
+ DIMENSION IPOS(2*MAXNUR),IREC(2*MAXNUR),IFLG(2*MAXNUR),
+ &ISCOL(2*MAXNUR),ISCHG(2*MAXNUR),PTSCA(2*MAXNUR),IMESAV(2*MAXNUR),
+ &PT2SAV(2*MAXNUR),ZSAV(2*MAXNUR),SHTSAV(2*MAXNUR),
+ &MESYS(MAXNUR,0:2),PSUM(5),DPT(5,4)
+C...Statement functions.
+ SHAT(I,J)=(P(I,4)+P(J,4))**2-(P(I,1)+P(J,1))**2-
+ &(P(I,2)+P(J,2))**2-(P(I,3)+P(J,3))**2
+
+C...Initial values. Check that valid system.
+ PTGEN=0D0
+ IF(MSTJ(41).NE.1.AND.MSTJ(41).NE.2.AND.MSTJ(41).NE.11.AND.
+ &MSTJ(41).NE.12) RETURN
+ IF(NPART.LE.0) THEN
+ CALL PYERRM(2,'(PYPTFS:) showering system too small')
+ RETURN
+ ENDIF
+ PT2CMX=PTMAX**2
+
+C...Mass thresholds and Lambda for QCD evolution.
+ PMB=PMAS(5,1)
+ PMC=PMAS(4,1)
+ ALAM5=PARJ(81)
+ ALAM4=ALAM5*(PMB/ALAM5)**(2D0/25D0)
+ ALAM3=ALAM4*(PMC/ALAM4)**(2D0/27D0)
+ PMBS=PMB**2
+ PMCS=PMC**2
+ ALAM5S=ALAM5**2
+ ALAM4S=ALAM4**2
+ ALAM3S=ALAM3**2
+
+C...Cutoff scale for QCD evolution. Starting pT2.
+ NFLAV=MAX(0,MIN(5,MSTJ(45)))
+ PT0C=0.5D0*PARJ(82)
+ PT2CMN=MAX(PTMIN,PT0C,1.1D0*ALAM3)**2
+
+C...Parameters for QED evolution.
+ AEM2PI=PARU(101)/PARU(2)
+ PT0EQ=0.5D0*PARJ(83)
+ PT0EL=0.5D0*PARJ(90)
+
+C...Reset. Remove irrelevant colour tags.
+ NEVOL=0
+ DO 100 J=1,4
+ PSUM(J)=0D0
+ 100 CONTINUE
+ DO 110 I=MINT(84)+1,N
+ IF(K(I,2).GT.0.AND.K(I,2).LT.6) THEN
+ K(I,5)=0
+ MCT(I,2)=0
+ ENDIF
+ IF(K(I,2).LT.0.AND.K(I,2).GT.-6) THEN
+ K(I,4)=0
+ MCT(I,1)=0
+ ENDIF
+ 110 CONTINUE
+ NPARTS=NPART
+
+C...Begin loop to set up showering partons. Sum four-momenta.
+ DO 210 IP=1,NPART
+ I=IPART(IP)
+ IF(MODE.NE.1.OR.I.GT.NPARTD) THEN
+ IF(K(I,1).GT.10) GOTO 210
+ ELSEIF(K(I,3).GT.MINT(84)) THEN
+ IF(K(I,3).GT.MINT(84)+2) GOTO 210
+ ELSE
+ IF(K(K(I,3),3).GT.MINT(83)+6) GOTO 210
+ ENDIF
+ DO 120 J=1,4
+ PSUM(J)=PSUM(J)+P(I,J)
+ 120 CONTINUE
+
+C...Find colour and charge, but skip diquarks.
+ IF(IABS(K(I,2)).GT.1000.AND.IABS(K(I,2)).LT.10000) GOTO 210
+ KCOL=ISIGN(KCHG(PYCOMP(K(I,2)),2),K(I,2))
+ KCHA=ISIGN(KCHG(PYCOMP(K(I,2)),1),K(I,2))
+
+C...Either colour or anticolour charge radiates; for gluon both.
+ DO 160 JSGCOL=1,-1,-2
+ IF(KCOL.EQ.JSGCOL.OR.KCOL.EQ.2) THEN
+ JCOL=4+(1-JSGCOL)/2
+ JCOLR=9-JCOL
+
+C...Basic info about radiating parton.
+ NEVOL=NEVOL+1
+ IPOS(NEVOL)=I
+ IFLG(NEVOL)=0
+ ISCOL(NEVOL)=JSGCOL
+ ISCHG(NEVOL)=0
+ PTSCA(NEVOL)=PTPART(IP)
+
+C...Begin search for colour recoiler when MODE = 0 or 1.
+ IF(MODE.LE.1) THEN
+C...Find sister with matching anticolour to the radiating parton.
+ IROLD=I
+ IRNEW=K(IROLD,JCOL)/MSTU(5)
+ MOVE=1
+
+C...The following will add MCT colour tracing for unprepped events
+C...If not done, trace Les Houches colour tags for this dipole
+C IF (MCT(I,JCOL-3).EQ.0) THEN
+C CALL PYCTTR(I,JCOL,INEW)
+C...Clean up mother/daughter 'read' tags set by PYCTTR
+C DO 125 IR=1,N
+C K(IR,4)=MOD(K(IR,4),MSTU(5)**2)
+C K(IR,5)=MOD(K(IR,5),MSTU(5)**2)
+C 125 CONTINUE
+C ENDIF
+
+C...Skip radiation off loose colour ends.
+ 130 IF(IRNEW.EQ.0) THEN
+ NEVOL=NEVOL-1
+ GOTO 160
+
+C...Optionally skip radiation on dipole to beam remnant.
+ ELSEIF(MSTP(72).LE.1.AND.IRNEW.GT.MINT(53)) THEN
+ NEVOL=NEVOL-1
+ GOTO 160
+
+C...For now always skip radiation on dipole to junction.
+ ELSEIF(K(IRNEW,2).EQ.88) THEN
+ NEVOL=NEVOL-1
+ GOTO 160
+
+C...For MODE=1: if reached primary then done.
+ ELSEIF(MODE.EQ.1.AND.IRNEW.GT.MINT(84)+2.AND.
+ & IRNEW.LE.NPARTD) THEN
+
+C...If sister stable and points back then done.
+ ELSEIF(MOVE.EQ.1.AND.K(IRNEW,JCOLR)/MSTU(5).EQ.IROLD)
+ & THEN
+ IF(K(IRNEW,1).LT.10) THEN
+
+C...If sister unstable then go to her daughter.
+ ELSE
+ IROLD=IRNEW
+ IRNEW=MOD(K(IRNEW,JCOLR),MSTU(5))
+ MOVE=2
+ GOTO 130
+ ENDIF
+
+C...If found mother then look for aunt.
+ ELSEIF(MOVE.EQ.1.AND.MOD(K(IRNEW,JCOL),MSTU(5)).EQ.
+ & IROLD) THEN
+ IROLD=IRNEW
+ IRNEW=K(IROLD,JCOL)/MSTU(5)
+ GOTO 130
+
+C...If daughter stable then done.
+ ELSEIF(MOVE.EQ.2.AND.K(IRNEW,JCOLR)/MSTU(5).EQ.IROLD)
+ & THEN
+ IF(K(IRNEW,1).LT.10) THEN
+
+C...If daughter unstable then go to granddaughter.
+ ELSE
+ IROLD=IRNEW
+ IRNEW=MOD(K(IRNEW,JCOLR),MSTU(5))
+ MOVE=2
+ GOTO 130
+ ENDIF
+
+C...If daughter points to another daughter then done or move up.
+ ELSEIF(MOVE.EQ.2.AND.MOD(K(IRNEW,JCOL),MSTU(5)).EQ.
+ & IROLD) THEN
+ IF(K(IRNEW,1).LT.10) THEN
+ ELSE
+ IROLD=IRNEW
+ IRNEW=K(IRNEW,JCOL)/MSTU(5)
+ MOVE=1
+ GOTO 130
+ ENDIF
+ ENDIF
+
+C...Begin search for colour recoiler when MODE = 2.
+ ELSE
+ IROLD=I
+ IRNEW=K(IROLD,JCOL)/MSTU(5)
+ 140 IF(K(IRNEW,JCOLR)/MSTU(5).NE.IROLD) THEN
+C...Step up to mother if radiating parton already branched.
+ IF(K(IRNEW,2).EQ.K(IROLD,2)) THEN
+ IROLD=IRNEW
+ IRNEW=K(IROLD,JCOL)/MSTU(5)
+ GOTO 140
+C...Pick sister by history if no anticolour available.
+ ELSE
+ IF(IROLD.GT.1.AND.K(IROLD-1,3).EQ.K(IROLD,3)) THEN
+ IRNEW=IROLD-1
+ ELSEIF(IROLD.LT.N.AND.K(IROLD+1,3).EQ.K(IROLD,3))
+ & THEN
+ IRNEW=IROLD+1
+C...Last resort: pick at random among other primaries.
+ ELSE
+ ISTEP=MAX(1,MIN(NPART-1,INT(1D0+(NPART-1)*PYR(0))))
+ IRNEW=IPART(1+MOD(IP+ISTEP-1,NPART))
+ ENDIF
+ ENDIF
+ ENDIF
+C...Trace down if sister branched.
+ 150 IF(K(IRNEW,1).GT.10) THEN
+ IRNEW=MOD(K(IRNEW,JCOLR),MSTU(5))
+ GOTO 150
+ ENDIF
+ ENDIF
+
+C...Now found other end of colour dipole.
+ IREC(NEVOL)=IRNEW
+ ENDIF
+ 160 CONTINUE
+
+C...Also electrical charge may radiate; so far only quarks and leptons.
+ IF((MSTJ(41).EQ.2.OR.MSTJ(41).EQ.12).AND.KCHA.NE.0.AND.
+ & IABS(K(I,2)).LE.18) THEN
+
+C...Basic info about radiating parton.
+ NEVOL=NEVOL+1
+ IPOS(NEVOL)=I
+ IFLG(NEVOL)=0
+ ISCOL(NEVOL)=0
+ ISCHG(NEVOL)=KCHA
+ PTSCA(NEVOL)=PTPART(IP)
+
+C...Pick nearest (= smallest invariant mass) charged particle
+C...as recoiler when MODE = 0 or 1 (but for latter among primaries).
+ IF(MODE.LE.1) THEN
+ IRNEW=0
+ PM2MIN=VINT(2)
+ DO 170 IP2=1,NPART+N-MINT(53)
+ IF(IP2.EQ.IP) GOTO 170
+ IF(IP2.LE.NPART) THEN
+ I2=IPART(IP2)
+ IF(MODE.NE.1.OR.I2.GT.NPARTD) THEN
+ IF(K(I2,1).GT.10) GOTO 170
+ ELSEIF(K(I2,3).GT.MINT(84)) THEN
+ IF(K(I2,3).GT.MINT(84)+2) GOTO 170
+ ELSE
+ IF(K(K(I2,3),3).GT.MINT(83)+6) GOTO 170
+ ENDIF
+ ELSE
+ I2=MINT(53)+IP2-NPART
+ ENDIF
+ IF(KCHG(PYCOMP(K(I2,2)),1).EQ.0) GOTO 170
+ PM2INV=(P(I,4)+P(I2,4))**2-(P(I,1)+P(I2,1))**2-
+ & (P(I,2)+P(I2,2))**2-(P(I,3)+P(I2,3))**2
+ IF(PM2INV.LT.PM2MIN) THEN
+ IRNEW=I2
+ PM2MIN=PM2INV
+ ENDIF
+ 170 CONTINUE
+ IF(IRNEW.EQ.0) THEN
+ NEVOL=NEVOL-1
+ GOTO 210
+ ENDIF
+
+C...Begin search for charge recoiler when MODE = 2.
+ ELSE
+ IROLD=I
+C...Pick sister by history; step up if parton already branched.
+ 180 IF(K(IROLD,3).GT.0.AND.K(K(IROLD,3),2).EQ.K(IROLD,2)) THEN
+ IROLD=K(IROLD,3)
+ GOTO 180
+ ENDIF
+ IF(IROLD.GT.1.AND.K(IROLD-1,3).EQ.K(IROLD,3)) THEN
+ IRNEW=IROLD-1
+ ELSEIF(IROLD.LT.N.AND.K(IROLD+1,3).EQ.K(IROLD,3)) THEN
+ IRNEW=IROLD+1
+C...Last resort: pick at random among other primaries.
+ ELSE
+ ISTEP=MAX(1,MIN(NPART-1,INT(1D0+(NPART-1)*PYR(0))))
+ IRNEW=IPART(1+MOD(IP+ISTEP-1,NPART))
+ ENDIF
+C...Trace down if sister branched.
+ 190 IF(K(IRNEW,1).GT.10) THEN
+ DO 200 IR=IRNEW+1,N
+ IF(K(IR,3).EQ.IRNEW.AND.K(IR,2).EQ.K(IRNEW,2)) THEN
+ IRNEW=IR
+ GOTO 190
+ ENDIF
+ 200 CONTINUE
+ ENDIF
+ ENDIF
+ IREC(NEVOL)=IRNEW
+ ENDIF
+
+C...End loop to set up showering partons. System invariant mass.
+ 210 CONTINUE
+ IF(NEVOL.LE.0) RETURN
+ PSUM(5)=SQRT(MAX(0D0,PSUM(4)**2-PSUM(1)**2-PSUM(2)**2-PSUM(3)**2))
+
+C...Check if 3-jet matrix elements to be used.
+ M3JC=0
+ ALPHA=0.5D0
+ NMESYS=0
+ IF(MSTJ(47).GE.1) THEN
+
+C...Identify source: q(1), ~q(2), V(3), S(4), chi(5), ~g(6), unknown(0).
+ KFSRCE=0
+ IPART1=K(IPART(1),3)
+ IPART2=K(IPART(2),3)
+ 220 IF(IPART1.EQ.IPART2.AND.IPART1.GT.0) THEN
+ KFSRCE=IABS(K(IPART1,2))
+ ELSEIF(IPART1.GT.IPART2.AND.IPART2.GT.0) THEN
+ IPART1=K(IPART1,3)
+ GOTO 220
+ ELSEIF(IPART2.GT.IPART1.AND.IPART1.GT.0) THEN
+ IPART2=K(IPART2,3)
+ GOTO 220
+ ENDIF
+ ITYPES=0
+ IF(KFSRCE.GE.1.AND.KFSRCE.LE.8) ITYPES=1
+ IF(KFSRCE.GE.KSUSY1+1.AND.KFSRCE.LE.KSUSY1+8) ITYPES=2
+ IF(KFSRCE.GE.KSUSY2+1.AND.KFSRCE.LE.KSUSY2+8) ITYPES=2
+ IF(KFSRCE.GE.21.AND.KFSRCE.LE.24) ITYPES=3
+ IF(KFSRCE.GE.32.AND.KFSRCE.LE.34) ITYPES=3
+ IF(KFSRCE.EQ.25.OR.(KFSRCE.GE.35.AND.KFSRCE.LE.37)) ITYPES=4
+ IF(KFSRCE.GE.KSUSY1+22.AND.KFSRCE.LE.KSUSY1+37) ITYPES=5
+ IF(KFSRCE.EQ.KSUSY1+21) ITYPES=6
+
+C...Identify two primary showerers.
+ KFLA1=IABS(K(IPART(1),2))
+ ITYPE1=0
+ IF(KFLA1.GE.1.AND.KFLA1.LE.8) ITYPE1=1
+ IF(KFLA1.GE.KSUSY1+1.AND.KFLA1.LE.KSUSY1+8) ITYPE1=2
+ IF(KFLA1.GE.KSUSY2+1.AND.KFLA1.LE.KSUSY2+8) ITYPE1=2
+ IF(KFLA1.GE.21.AND.KFLA1.LE.24) ITYPE1=3
+ IF(KFLA1.GE.32.AND.KFLA1.LE.34) ITYPE1=3
+ IF(KFLA1.EQ.25.OR.(KFLA1.GE.35.AND.KFLA1.LE.37)) ITYPE1=4
+ IF(KFLA1.GE.KSUSY1+22.AND.KFLA1.LE.KSUSY1+37) ITYPE1=5
+ IF(KFLA1.EQ.KSUSY1+21) ITYPE1=6
+ KFLA2=IABS(K(IPART(2),2))
+ ITYPE2=0
+ IF(KFLA2.GE.1.AND.KFLA2.LE.8) ITYPE2=1
+ IF(KFLA2.GE.KSUSY1+1.AND.KFLA2.LE.KSUSY1+8) ITYPE2=2
+ IF(KFLA2.GE.KSUSY2+1.AND.KFLA2.LE.KSUSY2+8) ITYPE2=2
+ IF(KFLA2.GE.21.AND.KFLA2.LE.24) ITYPE2=3
+ IF(KFLA2.GE.32.AND.KFLA2.LE.34) ITYPE2=3
+ IF(KFLA2.EQ.25.OR.(KFLA2.GE.35.AND.KFLA2.LE.37)) ITYPE2=4
+ IF(KFLA2.GE.KSUSY1+22.AND.KFLA2.LE.KSUSY1+37) ITYPE2=5
+ IF(KFLA2.EQ.KSUSY1+21) ITYPE2=6
+
+C...Order of showerers. Presence of gluino.
+ ITYPMN=MIN(ITYPE1,ITYPE2)
+ ITYPMX=MAX(ITYPE1,ITYPE2)
+ IORD=1
+ IF(ITYPE1.GT.ITYPE2) IORD=2
+ IGLUI=0
+ IF(ITYPE1.EQ.6.OR.ITYPE2.EQ.6) IGLUI=1
+
+C...Require exactly two primary showerers for ME corrections.
+ NPRIM=0
+ IF(IPART1.GT.0) THEN
+ DO 230 I=1,N
+ IF(K(I,3).EQ.IPART1.AND.K(I,2).NE.K(IPART1,2)) NPRIM=NPRIM+1
+ 230 CONTINUE
+ ENDIF
+ IF(NPRIM.NE.2) THEN
+
+C...Predetermined and default matrix element kinds.
+ ELSEIF(MSTJ(38).NE.0) THEN
+ M3JC=MSTJ(38)
+ ALPHA=PARJ(80)
+ MSTJ(38)=0
+ ELSEIF(MSTJ(47).GE.6) THEN
+ M3JC=MSTJ(47)
+ ELSE
+ ICLASS=1
+ ICOMBI=4
+
+C...Vector/axial vector -> q + qbar; q -> q + V.
+ IF(ITYPMN.EQ.1.AND.ITYPMX.EQ.1.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.3)) THEN
+ ICLASS=2
+ IF(KFSRCE.EQ.21.OR.KFSRCE.EQ.22) THEN
+ ICOMBI=1
+ ELSEIF(KFSRCE.EQ.23.OR.(KFSRCE.EQ.0.AND.
+ & K(IPART(1),2)+K(IPART(2),2).EQ.0)) THEN
+C...gamma*/Z0: assume e+e- initial state if unknown.
+ EI=-1D0
+ IF(KFSRCE.EQ.23) THEN
+ IANNFL=IPART1
+ IF(K(IANNFL,2).EQ.23) IANNFL=K(IANNFL,3)
+ IF(IANNFL.GT.0) THEN
+ IF(K(IANNFL,2).EQ.23) IANNFL=K(IANNFL,3)
+ ENDIF
+ IF(IANNFL.NE.0) THEN
+ KANNFL=IABS(K(IANNFL,2))
+ IF(KANNFL.GE.1.AND.KANNFL.LE.18) EI=KCHG(KANNFL,1)/3D0
+ ENDIF
+ ENDIF
+ AI=SIGN(1D0,EI+0.1D0)
+ VI=AI-4D0*EI*PARU(102)
+ EF=KCHG(KFLA1,1)/3D0
+ AF=SIGN(1D0,EF+0.1D0)
+ VF=AF-4D0*EF*PARU(102)
+ XWC=1D0/(16D0*PARU(102)*(1D0-PARU(102)))
+ SH=PSUM(5)**2
+ SQMZ=PMAS(23,1)**2
+ SQWZ=PSUM(5)*PMAS(23,2)
+ SBWZ=1D0/((SH-SQMZ)**2+SQWZ**2)
+ VECT=EI**2*EF**2+2D0*EI*VI*EF*VF*XWC*SH*(SH-SQMZ)*SBWZ+
+ & (VI**2+AI**2)*VF**2*XWC**2*SH**2*SBWZ
+ AXIV=(VI**2+AI**2)*AF**2*XWC**2*SH**2*SBWZ
+ ICOMBI=3
+ ALPHA=VECT/(VECT+AXIV)
+ ELSEIF(KFSRCE.EQ.24.OR.KFSRCE.EQ.0) THEN
+ ICOMBI=4
+ ENDIF
+C...For chi -> chi q qbar, use V/A -> q qbar as first approximation.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.1.AND.ITYPES.EQ.5) THEN
+ ICLASS=2
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.3.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=3
+
+C...Scalar/pseudoscalar -> q + qbar; q -> q + S.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.1.AND.ITYPES.EQ.4) THEN
+ ICLASS=4
+ IF(KFSRCE.EQ.25.OR.KFSRCE.EQ.35.OR.KFSRCE.EQ.37) THEN
+ ICOMBI=1
+ ELSEIF(KFSRCE.EQ.36) THEN
+ ICOMBI=2
+ ENDIF
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.4.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=5
+
+C...V -> ~q + ~qbar; ~q -> ~q + V; S -> ~q + ~qbar; ~q -> ~q + S.
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.2.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.3)) THEN
+ ICLASS=6
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.3.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=7
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.2.AND.ITYPES.EQ.4) THEN
+ ICLASS=8
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.4.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=9
+
+C...chi -> q + ~qbar; ~q -> q + chi; q -> ~q + chi.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.2.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.5)) THEN
+ ICLASS=10
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.5.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=11
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.5.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=12
+
+C...~g -> q + ~qbar; ~q -> q + ~g; q -> ~q + ~g.
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.2.AND.ITYPES.EQ.6) THEN
+ ICLASS=13
+ ELSEIF(ITYPMN.EQ.1.AND.ITYPMX.EQ.6.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.2)) THEN
+ ICLASS=14
+ ELSEIF(ITYPMN.EQ.2.AND.ITYPMX.EQ.6.AND.(ITYPES.EQ.0.OR.
+ & ITYPES.EQ.1)) THEN
+ ICLASS=15
+
+C...g -> ~g + ~g (eikonal approximation).
+ ELSEIF(ITYPMN.EQ.6.AND.ITYPMX.EQ.6.AND.ITYPES.EQ.0) THEN
+ ICLASS=16
+ ENDIF
+ M3JC=5*ICLASS+ICOMBI
+ ENDIF
+
+C...Store pair that together define matrix element treatment.
+ IF(M3JC.NE.0) THEN
+ NMESYS=1
+ MESYS(NMESYS,0)=M3JC
+ MESYS(NMESYS,1)=IPART(1)
+ MESYS(NMESYS,2)=IPART(2)
+ ENDIF
+
+C...Store qqbar or l+l- pairs for QED radiation.
+ IF(KFLA1.LE.18.AND.KFLA2.LE.18) THEN
+ NMESYS=NMESYS+1
+ MESYS(NMESYS,0)=101
+ IF(K(IPART(1),2)+K(IPART(2),2).EQ.0) MESYS(NMESYS,0)=102
+ MESYS(NMESYS,1)=IPART(1)
+ MESYS(NMESYS,2)=IPART(2)
+ ENDIF
+
+C...Store other qqbar/l+l- pairs from g/gamma branchings.
+ DO 270 I1=1,N
+ IF(K(I1,1).GT.10.OR.IABS(K(I1,2)).GT.18) GOTO 270
+ I1M=K(I1,3)
+ 240 IF(I1M.GT.0.AND.K(I1M,2).EQ.K(I1,2)) THEN
+ I1M=K(I1M,3)
+ GOTO 240
+ ENDIF
+C...Move up this check to avoid out-of-bounds.
+ IF(I1M.EQ.0) GOTO 270
+ IF(K(I1M,2).NE.21.AND.K(I1M,2).NE.22) GOTO 270
+ DO 260 I2=I1+1,N
+ IF(K(I2,1).GT.10.OR.K(I2,2)+K(I1,2).NE.0) GOTO 260
+ I2M=K(I2,3)
+ 250 IF(I2M.GT.0.AND.K(I2M,2).EQ.K(I2,2)) THEN
+ I2M=K(I2M,3)
+ GOTO 250
+ ENDIF
+ IF(I1M.EQ.I2M.AND.I1M.GT.0) THEN
+ NMESYS=NMESYS+1
+ MESYS(NMESYS,0)=66
+ MESYS(NMESYS,1)=I1
+ MESYS(NMESYS,2)=I2
+ NMESYS=NMESYS+1
+ MESYS(NMESYS,0)=102
+ MESYS(NMESYS,1)=I1
+ MESYS(NMESYS,2)=I2
+ ENDIF
+ 260 CONTINUE
+ 270 CONTINUE
+ ENDIF
+
+C..Loopback point for counting number of emissions.
+ NGEN=0
+ 280 NGEN=NGEN+1
+
+C...Begin loop to evolve all existing partons, if required.
+ 290 IMX=0
+ PT2MX=0D0
+ DO 360 IEVOL=1,NEVOL
+ IF(IFLG(IEVOL).EQ.0) THEN
+
+C...Basic info on radiator and recoil.
+ I=IPOS(IEVOL)
+ IR=IREC(IEVOL)
+ SHT=SHAT(I,IR)
+ PM2I=P(I,5)**2
+ PM2R=P(IR,5)**2
+
+C...Invariant mass of "dipole".Starting value for pT evolution.
+ SHTCOR=(SQRT(SHT)-P(IR,5))**2-PM2I
+ PT2=MIN(PT2CMX,0.25D0*SHTCOR,PTSCA(IEVOL)**2)
+
+C...Case of evolution by QCD branching.
+ IF(ISCOL(IEVOL).NE.0) THEN
+
+C...Parton-by-parton maximum scale from initial conditions.
+ IF(MSTP(72).EQ.0) THEN
+ DO 300 IPRT=1,NPARTS
+ IF(IR.EQ.IPART(IPRT)) PT2=MIN(PT2,PTPART(IPRT)**2)
+ 300 CONTINUE
+ ENDIF
+
+C...If kinematically impossible then do not evolve.
+ IF(PT2.LT.PT2CMN) THEN
+ IFLG(IEVOL)=-1
+ GOTO 360
+ ENDIF
+
+C...Check if part of system for which ME corrections should be applied.
+ IMESYS=0
+ DO 310 IME=1,NMESYS
+ IF((I.EQ.MESYS(IME,1).OR.I.EQ.MESYS(IME,2)).AND.
+ & MESYS(IME,0).LT.100) IMESYS=IME
+ 310 CONTINUE
+
+C...Special flag for colour octet states.
+ MOCT=0
+ IF(K(I,2).EQ.21) MOCT=1
+ IF(K(I,2).EQ.KSUSY1+21) MOCT=2
+
+C...Upper estimate for matrix element weighting and colour factor.
+C...Note that g->gg and g->qqbar is split on two sides = "dipoles".
+ WTPSGL=2D0
+ COLFAC=4D0/3D0
+ IF(MOCT.GE.1) COLFAC=3D0/2D0
+ IF(IGLUI.EQ.1.AND.IMESYS.EQ.1.AND.MOCT.EQ.0) COLFAC=3D0
+ WTPSQQ=0.5D0*0.5D0*NFLAV
+
+C...Determine overestimated z range: switch at c and b masses.
+ 320 IZRG=1
+ PT2MNE=PT2CMN
+ B0=27D0/6D0
+ ALAMS=ALAM3S
+ IF(PT2.GT.1.01D0*PMCS) THEN
+ IZRG=2
+ PT2MNE=PMCS
+ B0=25D0/6D0
+ ALAMS=ALAM4S
+ ENDIF
+ IF(PT2.GT.1.01D0*PMBS) THEN
+ IZRG=3
+ PT2MNE=PMBS
+ B0=23D0/6D0
+ ALAMS=ALAM5S
+ ENDIF
+ ZMNCUT=0.5D0-SQRT(MAX(0D0,0.25D0-PT2MNE/SHTCOR))
+ IF(ZMNCUT.LT.1D-8) ZMNCUT=PT2MNE/SHTCOR
+
+C...Find evolution coefficients for q->qg/g->gg and g->qqbar.
+ EVEMGL=WTPSGL*COLFAC*LOG(1D0/ZMNCUT-1D0)/B0
+ EVCOEF=EVEMGL
+ IF(MOCT.EQ.1) THEN
+ EVEMQQ=WTPSQQ*(1D0-2D0*ZMNCUT)/B0
+ EVCOEF=EVCOEF+EVEMQQ
+ ENDIF
+
+C...Pick pT2 (in overestimated z range).
+ 330 PT2=ALAMS*(PT2/ALAMS)**(PYR(0)**(1D0/EVCOEF))
+
+C...Loopback if crossed c/b mass thresholds.
+ IF(IZRG.EQ.3.AND.PT2.LT.PMBS) THEN
+ PT2=PMBS
+ GOTO 320
+ ENDIF
+ IF(IZRG.EQ.2.AND.PT2.LT.PMCS) THEN
+ PT2=PMCS
+ GOTO 320
+ ENDIF
+
+C...Finish if below lower cutoff.
+ IF(PT2.LT.PT2CMN) THEN
+ IFLG(IEVOL)=-1
+ GOTO 360
+ ENDIF
+
+C...Pick kind of branching: q->qg/g->gg/X->Xg or g->qqbar.
+ IFLAG=1
+ IF(MOCT.EQ.1.AND.EVEMGL.LT.PYR(0)*EVCOEF) IFLAG=2
+
+C...Pick z: dz/(1-z) or dz.
+ IF(IFLAG.EQ.1) THEN
+ Z=1D0-ZMNCUT*(1D0/ZMNCUT-1D0)**PYR(0)
+ ELSE
+ Z=ZMNCUT+PYR(0)*(1D0-2D0*ZMNCUT)
+ ENDIF
+
+C...Loopback if outside allowed range for given pT2.
+ ZMNNOW=0.5D0-SQRT(MAX(0D0,0.25D0-PT2/SHTCOR))
+ IF(ZMNNOW.LT.1D-8) ZMNNOW=PT2/SHTCOR
+ IF(Z.LE.ZMNNOW.OR.Z.GE.1D0-ZMNNOW) GOTO 330
+ PM2=PM2I+PT2/(Z*(1D0-Z))
+ IF(Z*(1D0-Z).LE.PM2*SHT/(SHT+PM2-PM2R)**2) GOTO 330
+
+C...No weighting for primary partons; to be done later on.
+ IF(IMESYS.GT.0) THEN
+
+C...Weighting of q->qg/X->Xg branching.
+ ELSEIF(IFLAG.EQ.1.AND.MOCT.NE.1) THEN
+ IF(1D0+Z**2.LT.WTPSGL*PYR(0)) GOTO 330
+
+C...Weighting of g->gg branching.
+ ELSEIF(IFLAG.EQ.1) THEN
+ IF(1D0+Z**3.LT.WTPSGL*PYR(0)) GOTO 330
+
+C...Flavour choice and weighting of g->qqbar branching.
+ ELSE
+ KFQ=MIN(5,1+INT(NFLAV*PYR(0)))
+ PMQ=PMAS(KFQ,1)
+ ROOTQQ=SQRT(MAX(0D0,1D0-4D0*PMQ**2/PM2))
+ WTME=ROOTQQ*(Z**2+(1D0-Z)**2)
+ IF(WTME.LT.PYR(0)) GOTO 330
+ IFLAG=10+KFQ
+ ENDIF
+
+C...Case of evolution by QED branching.
+ ELSEIF(ISCHG(IEVOL).NE.0) THEN
+
+C...If kinematically impossible then do not evolve.
+ PT2EMN=PT0EQ**2
+ IF(IABS(K(I,2)).GT.10) PT2EMN=PT0EL**2
+ IF(PT2.LT.PT2EMN) THEN
+ IFLG(IEVOL)=-1
+ GOTO 360
+ ENDIF
+
+C...Check if part of system for which ME corrections should be applied.
+ IMESYS=0
+ DO 340 IME=1,NMESYS
+ IF((I.EQ.MESYS(IME,1).OR.I.EQ.MESYS(IME,2)).AND.
+ & MESYS(IME,0).GT.100) IMESYS=IME
+ 340 CONTINUE
+
+C...Charge. Matrix element weighting factor.
+ CHG=ISCHG(IEVOL)/3D0
+ WTPSGA=2D0
+
+C...Determine overestimated z range. Find evolution coefficient.
+ ZMNCUT=0.5D0-SQRT(MAX(0D0,0.25D0-PT2EMN/SHTCOR))
+ IF(ZMNCUT.LT.1D-8) ZMNCUT=PT2EMN/SHTCOR
+ EVCOEF=AEM2PI*CHG**2*WTPSGA*LOG(1D0/ZMNCUT-1D0)
+
+C...Pick pT2 (in overestimated z range).
+ 350 PT2=PT2*PYR(0)**(1D0/EVCOEF)
+
+C...Finish if below lower cutoff.
+ IF(PT2.LT.PT2EMN) THEN
+ IFLG(IEVOL)=-1
+ GOTO 360
+ ENDIF
+
+C...Pick z: dz/(1-z).
+ Z=1D0-ZMNCUT*(1D0/ZMNCUT-1D0)**PYR(0)
+
+C...Loopback if outside allowed range for given pT2.
+ ZMNNOW=0.5D0-SQRT(MAX(0D0,0.25D0-PT2/SHTCOR))
+ IF(ZMNNOW.LT.1D-8) ZMNNOW=PT2/SHTCOR
+ IF(Z.LE.ZMNNOW.OR.Z.GE.1D0-ZMNNOW) GOTO 350
+ PM2=PM2I+PT2/(Z*(1D0-Z))
+ IF(Z*(1D0-Z).LE.PM2*SHT/(SHT+PM2-PM2R)**2) GOTO 350
+
+C...Weighting by branching kernel, except if ME weighting later.
+ IF(IMESYS.EQ.0) THEN
+ IF(1D0+Z**2.LT.WTPSGA*PYR(0)) GOTO 350
+ ENDIF
+ IFLAG=3
+ ENDIF
+
+C...Save acceptable branching.
+ IFLG(IEVOL)=IFLAG
+ IMESAV(IEVOL)=IMESYS
+ PT2SAV(IEVOL)=PT2
+ ZSAV(IEVOL)=Z
+ SHTSAV(IEVOL)=SHT
+ ENDIF
+
+C...Check if branching has highest pT.
+ IF(IFLG(IEVOL).GE.1.AND.PT2SAV(IEVOL).GT.PT2MX) THEN
+ IMX=IEVOL
+ PT2MX=PT2SAV(IEVOL)
+ ENDIF
+ 360 CONTINUE
+
+C...Finished if no more branchings to be done.
+ IF(IMX.EQ.0) GOTO 480
+
+C...Restore info on hardest branching to be processed.
+ I=IPOS(IMX)
+ IR=IREC(IMX)
+ KCOL=ISCOL(IMX)
+ KCHA=ISCHG(IMX)
+ IMESYS=IMESAV(IMX)
+ PT2=PT2SAV(IMX)
+ Z=ZSAV(IMX)
+ SHT=SHTSAV(IMX)
+ PM2I=P(I,5)**2
+ PM2R=P(IR,5)**2
+ PM2=PM2I+PT2/(Z*(1D0-Z))
+
+C...Special flag for colour octet states.
+ MOCT=0
+ IF(K(I,2).EQ.21) MOCT=1
+ IF(K(I,2).EQ.KSUSY1+21) MOCT=2
+
+C...Restore further info for g->qqbar branching.
+ KFQ=0
+ IF(IFLG(IMX).GT.10) THEN
+ KFQ=IFLG(IMX)-10
+ PMQ=PMAS(KFQ,1)
+ ROOTQQ=SQRT(MAX(0D0,1D0-4D0*PMQ**2/PM2))
+ ENDIF
+
+C...For branching g include azimuthal asymmetries from polarization.
+ ASYPOL=0D0
+ IF(MOCT.EQ.1.AND.MOD(MSTJ(46),2).EQ.1) THEN
+C...Trace grandmother via intermediate recoil copies.
+ KFGM=0
+ IM=I
+ 370 IF(K(IM,3).NE.K(IM-1,3).AND.K(IM,3).NE.K(IM+1,3).AND.
+ & K(IM,3).GT.0) THEN
+ IM=K(IM,3)
+ IF(IM.GT.MINT(84)) GOTO 370
+ ENDIF
+ IGM=K(IM,3)
+ IF(IGM.GT.MINT(84).AND.IGM.LT.IM.AND.IM.LE.I)
+ & KFGM=IABS(K(IGM,2))
+C...Define approximate energy sharing by identifying aunt.
+ IAU=IM+1
+ IF(IAU.GT.N-3.OR.K(IAU,3).NE.IGM) IAU=IM-1
+ IF(KFGM.NE.0.AND.(KFGM.LE.6.OR.KFGM.EQ.21)) THEN
+ ZOLD=P(IM,4)/(P(IM,4)+P(IAU,4))
+C...Coefficient from gluon production.
+ IF(KFGM.LE.6) THEN
+ ASYPOL=2D0*(1D0-ZOLD)/(1D0+(1D0-ZOLD)**2)
+ ELSE
+ ASYPOL=((1D0-ZOLD)/(1D0-ZOLD*(1D0-ZOLD)))**2
+ ENDIF
+C...Coefficient from gluon decay.
+ IF(KFQ.EQ.0) THEN
+ ASYPOL=ASYPOL*(Z*(1D0-Z)/(1D0-Z*(1D0-Z)))**2
+ ELSE
+ ASYPOL=-ASYPOL*2D0*Z*(1D0-Z)/(1D0-2D0*Z*(1D0-Z))
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...Create new slots for branching products and recoil.
+ INEW=N+1
+ IGNEW=N+2
+ IRNEW=N+3
+ N=N+3
+
+C...Set status, flavour and mother of new ones.
+ K(INEW,1)=K(I,1)
+ K(IGNEW,1)=3
+ IF(KCHA.NE.0) K(IGNEW,1)=1
+ K(IRNEW,1)=K(IR,1)
+ IF(KFQ.EQ.0) THEN
+ K(INEW,2)=K(I,2)
+ K(IGNEW,2)=21
+ IF(KCHA.NE.0) K(IGNEW,2)=22
+ ELSE
+ K(INEW,2)=-ISIGN(KFQ,KCOL)
+ K(IGNEW,2)=-K(INEW,2)
+ ENDIF
+ K(IRNEW,2)=K(IR,2)
+ K(INEW,3)=I
+ K(IGNEW,3)=I
+ K(IRNEW,3)=IR
+
+C...Find rest frame and angles of branching+recoil.
+ DO 380 J=1,5
+ P(INEW,J)=P(I,J)
+ P(IGNEW,J)=0D0
+ P(IRNEW,J)=P(IR,J)
+ 380 CONTINUE
+ BETAX=(P(INEW,1)+P(IRNEW,1))/(P(INEW,4)+P(IRNEW,4))
+ BETAY=(P(INEW,2)+P(IRNEW,2))/(P(INEW,4)+P(IRNEW,4))
+ BETAZ=(P(INEW,3)+P(IRNEW,3))/(P(INEW,4)+P(IRNEW,4))
+ CALL PYROBO(INEW,IRNEW,0D0,0D0,-BETAX,-BETAY,-BETAZ)
+ PHI=PYANGL(P(INEW,1),P(INEW,2))
+ THETA=PYANGL(P(INEW,3),SQRT(P(INEW,1)**2+P(INEW,2)**2))
+
+C...Derive kinematics of branching: generics (like g->gg).
+ DO 390 J=1,4
+ P(INEW,J)=0D0
+ P(IRNEW,J)=0D0
+ 390 CONTINUE
+ PEM=0.5D0*(SHT+PM2-PM2R)/SQRT(SHT)
+ PZM=0.5D0*SQRT(MAX(0D0,(SHT-PM2-PM2R)**2-4D0*PM2*PM2R)/SHT)
+ PT2COR=PM2*(PEM**2*Z*(1D0-Z)-0.25D0*PM2)/PZM**2
+ PTCOR=SQRT(MAX(0D0,PT2COR))
+ PZN=(PEM**2*Z-0.5D0*PM2)/PZM
+ PZG=(PEM**2*(1D0-Z)-0.5D0*PM2)/PZM
+C...Specific kinematics reduction for q->qg with m_q > 0.
+ IF(MOCT.NE.1) THEN
+ PTCOR=(1D0-PM2I/PM2)*PTCOR
+ PZN=PZN+PM2I*PZG/PM2
+ PZG=(1D0-PM2I/PM2)*PZG
+C...Specific kinematics reduction for g->qqbar with m_q > 0.
+ ELSEIF(KFQ.NE.0) THEN
+ P(INEW,5)=PMQ
+ P(IGNEW,5)=PMQ
+ PTCOR=ROOTQQ*PTCOR
+ PZN=0.5D0*((1D0+ROOTQQ)*PZN+(1D0-ROOTQQ)*PZG)
+ PZG=PZM-PZN
+ ENDIF
+
+C...Pick phi and construct kinematics of branching.
+ 400 PHIROT=PARU(2)*PYR(0)
+ P(INEW,1)=PTCOR*COS(PHIROT)
+ P(INEW,2)=PTCOR*SIN(PHIROT)
+ P(INEW,3)=PZN
+ P(INEW,4)=SQRT(PTCOR**2+P(INEW,3)**2+P(INEW,5)**2)
+ P(IGNEW,1)=-P(INEW,1)
+ P(IGNEW,2)=-P(INEW,2)
+ P(IGNEW,3)=PZG
+ P(IGNEW,4)=SQRT(PTCOR**2+P(IGNEW,3)**2+P(IGNEW,5)**2)
+ P(IRNEW,1)=0D0
+ P(IRNEW,2)=0D0
+ P(IRNEW,3)=-PZM
+ P(IRNEW,4)=0.5D0*(SHT+PM2R-PM2)/SQRT(SHT)
+
+C...Boost branching system to lab frame.
+ CALL PYROBO(INEW,IRNEW,THETA,PHI,BETAX,BETAY,BETAZ)
+
+C...Renew choice of phi angle according to polarization asymmetry.
+ IF(ABS(ASYPOL).GT.1D-3) THEN
+ DO 410 J=1,3
+ DPT(1,J)=P(I,J)
+ DPT(2,J)=P(IAU,J)
+ DPT(3,J)=P(INEW,J)
+ 410 CONTINUE
+ DPMA=DPT(1,1)*DPT(2,1)+DPT(1,2)*DPT(2,2)+DPT(1,3)*DPT(2,3)
+ DPMD=DPT(1,1)*DPT(3,1)+DPT(1,2)*DPT(3,2)+DPT(1,3)*DPT(3,3)
+ DPMM=DPT(1,1)**2+DPT(1,2)**2+DPT(1,3)**2
+ DO 420 J=1,3
+ DPT(4,J)=DPT(2,J)-DPMA*DPT(1,J)/MAX(1D-10,DPMM)
+ DPT(5,J)=DPT(3,J)-DPMD*DPT(1,J)/MAX(1D-10,DPMM)
+ 420 CONTINUE
+ DPT(4,4)=SQRT(DPT(4,1)**2+DPT(4,2)**2+DPT(4,3)**2)
+ DPT(5,4)=SQRT(DPT(5,1)**2+DPT(5,2)**2+DPT(5,3)**2)
+ IF(MIN(DPT(4,4),DPT(5,4)).GT.0.1D0*PARJ(82)) THEN
+ CAD=(DPT(4,1)*DPT(5,1)+DPT(4,2)*DPT(5,2)+
+ & DPT(4,3)*DPT(5,3))/(DPT(4,4)*DPT(5,4))
+ IF(1D0+ASYPOL*(2D0*CAD**2-1D0).LT.PYR(0)*(1D0+ABS(ASYPOL)))
+ & GOTO 400
+ ENDIF
+ ENDIF
+
+C...Matrix element corrections for primary partons when requested.
+ IF(IMESYS.GT.0) THEN
+ M3JC=MESYS(IMESYS,0)
+
+C...Identify recoiling partner and set up three-body kinematics.
+ IRP=MESYS(IMESYS,1)
+ IF(IRP.EQ.I) IRP=MESYS(IMESYS,2)
+ IF(IRP.EQ.IR) IRP=IRNEW
+ DO 430 J=1,4
+ PSUM(J)=P(INEW,J)+P(IRP,J)+P(IGNEW,J)
+ 430 CONTINUE
+ PSUM(5)=SQRT(MAX(0D0,PSUM(4)**2-PSUM(1)**2-PSUM(2)**2-
+ & PSUM(3)**2))
+ X1=2D0*(PSUM(4)*P(INEW,4)-PSUM(1)*P(INEW,1)-PSUM(2)*P(INEW,2)-
+ & PSUM(3)*P(INEW,3))/PSUM(5)**2
+ X2=2D0*(PSUM(4)*P(IRP,4)-PSUM(1)*P(IRP,1)-PSUM(2)*P(IRP,2)-
+ & PSUM(3)*P(IRP,3))/PSUM(5)**2
+ X3=2D0-X1-X2
+ R1ME=P(INEW,5)/PSUM(5)
+ R2ME=P(IRP,5)/PSUM(5)
+
+C...Matrix elements for gluon emission.
+ IF(M3JC.LT.100) THEN
+
+C...Call ME, with right order important for two inequivalent showerers.
+ IF(MESYS(IMESYS,IORD).EQ.I) THEN
+ WME=PYMAEL(M3JC,X1,X2,R1ME,R2ME,ALPHA)
+ ELSE
+ WME=PYMAEL(M3JC,X2,X1,R2ME,R1ME,ALPHA)
+ ENDIF
+
+C...Split up total ME when two radiating partons.
+ ISPRAD=1
+ IF((M3JC.GE.16.AND.M3JC.LE.19).OR.(M3JC.GE.26.AND.M3JC.LE.29)
+ & .OR.(M3JC.GE.36.AND.M3JC.LE.39).OR.(M3JC.GE.46.AND.M3JC.LE.49)
+ & .OR.(M3JC.GE.56.AND.M3JC.LE.64)) ISPRAD=0
+ IF(ISPRAD.EQ.1) WME=WME*MAX(1D-10,1D0+R1ME**2-R2ME**2-X1)/
+ & MAX(1D-10,2D0-X1-X2)
+
+C...Evaluate shower rate.
+ WPS=2D0/(MAX(1D-10,2D0-X1-X2)*
+ & MAX(1D-10,1D0+R2ME**2-R1ME**2-X2))
+ IF(IGLUI.EQ.1) WPS=(9D0/4D0)*WPS
+
+C...Matrix elements for photon emission: still rather primitive.
+ ELSE
+
+C...For generic charge combination currently only massless expression.
+ IF(M3JC.EQ.101) THEN
+ CHG1=KCHG(PYCOMP(K(I,2)),1)*ISIGN(1,K(I,2))/3D0
+ CHG2=KCHG(PYCOMP(K(IRP,2)),1)*ISIGN(1,K(IRP,2))/3D0
+ WME=(CHG1*(1D0-X1)/X3-CHG2*(1D0-X2)/X3)**2*(X1**2+X2**2)
+ WPS=2D0*(CHG1**2*(1D0-X1)/X3+CHG2**2*(1D0-X2)/X3)
+
+C...For flavour neutral system assume vector source and include masses.
+ ELSE
+ WME=PYMAEL(11,X1,X2,R1ME,R2ME,0D0)*MAX(1D-10,
+ & 1D0+R1ME**2-R2ME**2-X1)/MAX(1D-10,2D0-X1-X2)
+ WPS=2D0/(MAX(1D-10,2D0-X1-X2)*
+ & MAX(1D-10,1D0+R2ME**2-R1ME**2-X2))
+ ENDIF
+ ENDIF
+
+C...Perform weighting with W_ME/W_PS.
+ IF(WME.LT.PYR(0)*WPS) THEN
+ N=N-3
+ IFLG(IMX)=0
+ PT2CMX=PT2
+ GOTO 290
+ ENDIF
+ ENDIF
+
+C...Now for sure accepted branching. Save highest pT.
+ IF(NGEN.EQ.1) PTGEN=SQRT(PT2)
+
+C...Update status for obsolete ones. Bookkkep the moved original parton
+C...and new daughter (arbitrary choice for g->gg or g->qqbar).
+C...Do not bookkeep radiated photon, since it cannot radiate further.
+ K(I,1)=K(I,1)+10
+ K(IR,1)=K(IR,1)+10
+ DO 440 IP=1,NPART
+ IF(IPART(IP).EQ.I) IPART(IP)=INEW
+ IF(IPART(IP).EQ.IR) IPART(IP)=IRNEW
+ 440 CONTINUE
+ IF(KCHA.EQ.0) THEN
+ NPART=NPART+1
+ IPART(NPART)=IGNEW
+ ENDIF
+
+C...Initialize colour flow of branching.
+C...Use both old and new style colour tags for flexibility.
+ K(INEW,4)=0
+ K(IGNEW,4)=0
+ K(INEW,5)=0
+ K(IGNEW,5)=0
+ JCOLP=4+(1-KCOL)/2
+ JCOLN=9-JCOLP
+ MCT(INEW,1)=0
+ MCT(INEW,2)=0
+ MCT(IGNEW,1)=0
+ MCT(IGNEW,2)=0
+ MCT(IRNEW,1)=0
+ MCT(IRNEW,2)=0
+
+C...Trivial colour flow for l->lgamma and q->qgamma.
+ IF(IABS(KCHA).EQ.3) THEN
+ K(I,4)=INEW
+ K(I,5)=IGNEW
+ ELSEIF(KCHA.NE.0) THEN
+ IF(K(I,4).NE.0) THEN
+ K(I,4)=K(I,4)+INEW
+ K(INEW,4)=MSTU(5)*I
+ MCT(INEW,1)=MCT(I,1)
+ ENDIF
+ IF(K(I,5).NE.0) THEN
+ K(I,5)=K(I,5)+INEW
+ K(INEW,5)=MSTU(5)*I
+ MCT(INEW,2)=MCT(I,2)
+ ENDIF
+
+C...Set colour flow for q->qg and g->gg.
+ ELSEIF(KFQ.EQ.0) THEN
+ K(I,JCOLP)=K(I,JCOLP)+IGNEW
+ K(IGNEW,JCOLP)=MSTU(5)*I
+ K(INEW,JCOLP)=MSTU(5)*IGNEW
+ K(IGNEW,JCOLN)=MSTU(5)*INEW
+ MCT(IGNEW,JCOLP-3)=MCT(I,JCOLP-3)
+ NCT=NCT+1
+ MCT(INEW,JCOLP-3)=NCT
+ MCT(IGNEW,JCOLN-3)=NCT
+ IF(MOCT.GE.1) THEN
+ K(I,JCOLN)=K(I,JCOLN)+INEW
+ K(INEW,JCOLN)=MSTU(5)*I
+ MCT(INEW,JCOLN-3)=MCT(I,JCOLN-3)
+ ENDIF
+
+C...Set colour flow for g->qqbar.
+ ELSE
+ K(I,JCOLN)=K(I,JCOLN)+INEW
+ K(INEW,JCOLN)=MSTU(5)*I
+ K(I,JCOLP)=K(I,JCOLP)+IGNEW
+ K(IGNEW,JCOLP)=MSTU(5)*I
+ MCT(INEW,JCOLN-3)=MCT(I,JCOLN-3)
+ MCT(IGNEW,JCOLP-3)=MCT(I,JCOLP-3)
+ ENDIF
+
+C...Daughter info for colourless recoiling parton.
+ IF(K(IR,4).EQ.0.AND.K(IR,5).EQ.0) THEN
+ K(IR,4)=IRNEW
+ K(IR,5)=IRNEW
+ K(IRNEW,4)=0
+ K(IRNEW,5)=0
+
+C...Colour of recoiling parton sails through unchanged.
+ ELSE
+ IF(K(IR,4).NE.0) THEN
+ K(IR,4)=K(IR,4)+IRNEW
+ K(IRNEW,4)=MSTU(5)*IR
+ MCT(IRNEW,1)=MCT(IR,1)
+ ENDIF
+ IF(K(IR,5).NE.0) THEN
+ K(IR,5)=K(IR,5)+IRNEW
+ K(IRNEW,5)=MSTU(5)*IR
+ MCT(IRNEW,2)=MCT(IR,2)
+ ENDIF
+ ENDIF
+
+C...Vertex information trivial.
+ DO 450 J=1,5
+ V(INEW,J)=V(I,J)
+ V(IGNEW,J)=V(I,J)
+ V(IRNEW,J)=V(IR,J)
+ 450 CONTINUE
+
+C...Update list of old radiators.
+ DO 460 IEVOL=1,NEVOL
+ IF(IPOS(IEVOL).EQ.I.AND.IREC(IEVOL).EQ.IR) THEN
+ IPOS(IEVOL)=INEW
+ IF(KCOL.NE.0.AND.ISCOL(IEVOL).EQ.KCOL) IPOS(IEVOL)=IGNEW
+ IREC(IEVOL)=IRNEW
+ IFLG(IEVOL)=0
+ ELSEIF(IPOS(IEVOL).EQ.I) THEN
+ IPOS(IEVOL)=INEW
+ IFLG(IEVOL)=0
+ ELSEIF(IPOS(IEVOL).EQ.IR.AND.IREC(IEVOL).EQ.I) THEN
+ IPOS(IEVOL)=IRNEW
+ IREC(IEVOL)=INEW
+ IF(KCOL.NE.0.AND.ISCOL(IEVOL).NE.KCOL) IREC(IEVOL)=IGNEW
+ IFLG(IEVOL)=0
+ ELSEIF(IPOS(IEVOL).EQ.IR) THEN
+ IPOS(IEVOL)=IRNEW
+ IFLG(IEVOL)=0
+ ENDIF
+C...Update links of old connected partons.
+ IF(IREC(IEVOL).EQ.I) THEN
+ IREC(IEVOL)=INEW
+ IFLG(IEVOL)=0
+ ELSEIF(IREC(IEVOL).EQ.IR) THEN
+ IREC(IEVOL)=IRNEW
+ IFLG(IEVOL)=0
+ ENDIF
+ 460 CONTINUE
+
+C...q->qg or g->gg: create new gluon radiators.
+ IF(KCOL.NE.0.AND.KFQ.EQ.0) THEN
+ NEVOL=NEVOL+1
+ IPOS(NEVOL)=INEW
+ IREC(NEVOL)=IGNEW
+ IFLG(NEVOL)=0
+ ISCOL(NEVOL)=KCOL
+ ISCHG(NEVOL)=0
+ PTSCA(NEVOL)=SQRT(PT2)
+ NEVOL=NEVOL+1
+ IPOS(NEVOL)=IGNEW
+ IREC(NEVOL)=INEW
+ IFLG(NEVOL)=0
+ ISCOL(NEVOL)=-KCOL
+ ISCHG(NEVOL)=0
+ PTSCA(NEVOL)=PTSCA(NEVOL-1)
+ ENDIF
+
+C...Update matrix elements parton list and add new for g/gamma->qqbar.
+ DO 470 IME=1,NMESYS
+ IF(MESYS(IME,1).EQ.I) MESYS(IME,1)=INEW
+ IF(MESYS(IME,2).EQ.I) MESYS(IME,2)=INEW
+ IF(MESYS(IME,1).EQ.IR) MESYS(IME,1)=IRNEW
+ IF(MESYS(IME,2).EQ.IR) MESYS(IME,2)=IRNEW
+ 470 CONTINUE
+ IF(KFQ.NE.0) THEN
+ NMESYS=NMESYS+1
+ MESYS(NMESYS,0)=66
+ MESYS(NMESYS,1)=INEW
+ MESYS(NMESYS,2)=IGNEW
+ NMESYS=NMESYS+1
+ MESYS(NMESYS,0)=102
+ MESYS(NMESYS,1)=INEW
+ MESYS(NMESYS,2)=IGNEW
+ ENDIF
+
+C...Global statistics.
+ MINT(353)=MINT(353)+1
+ VINT(353)=VINT(353)+PTCOR
+ IF (MINT(353).EQ.1) VINT(358)=PTCOR
+
+C...Loopback for more emissions if enough space.
+ PT2CMX=PT2
+ IF(NPART.LT.MAXNUR-1.AND.NEVOL.LT.2*MAXNUR-2.AND.
+ &NMESYS.LT.MAXNUR-2.AND.N.LT.MSTU(4)-MSTU(32)-5) THEN
+ GOTO 280
+ ELSE
+ CALL PYERRM(11,'(PYPTFS:) no more memory left for shower')
+ ENDIF
+
+C...Done.
+ 480 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMAEL
+C...Auxiliary to PYSHOW and PYPTFS.
+C...Matrix elements for gluon (or photon) emission from
+C...a two-body state; to be used by the parton shower routine.
+C...Here X_i = 2 E_i/E_cm, R_i = m_i/E_cm and
+C...1/sigma_0 d(sigma)/d(x_1)d(x_2) =
+C... = (alpha-strong/2 pi) * CF * PYMAEL,
+C...i.e. normalization is such that one recovers the familiar
+C...(X1**2+X2**2)/((1-X1)*(1-X2)) for the massless case.
+C...Coupling structure:
+C...NI = 6- 9 : eikonal soft-gluon expression (spin-independent)
+C... = 11-14 : V -> q qbar (V = vector/axial vector colour singlet)
+C... = 16-19 : q -> q V
+C... = 21-24 : S -> q qbar (S = scalar/pseudoscalar colour singlet)
+C... = 26-29 : q -> q S
+C... = 31-34 : V -> ~q ~qbar (~q = squark)
+C... = 36-39 : ~q -> ~q V
+C... = 41-44 : S -> ~q ~qbar
+C... = 46-49 : ~q -> ~q S
+C... = 51-54 : chi -> q ~qbar (chi = neutralino/chargino)
+C... = 56-59 : ~q -> q chi
+C... = 61-64 : q -> ~q chi
+C... = 66-69 : ~g -> q ~qbar
+C... = 71-74 : ~q -> q ~g
+C... = 76-79 : q -> ~q ~g
+C... = 81-84 : (9/4)*(eikonal) for gg -> ~g ~g
+C...Note that the order of the decay products is important.
+C...In each set of four, the variants are ordered as:
+C...ICOMBI = 1 : pure non-gamma5, i.e. vector/scalar/...
+C... = 2 : pure gamma5, i.e. axial vector/pseudoscalar/....
+C... = 3 : mixture alpha*(ICOMBI=1) + (1-alpha)*(ICOMBI=2)
+C... = 4 : mixture (ICOMBI=1) +- (ICOMBI=2)
+
+ FUNCTION PYMAEL(NI,X1,X2,R1,R2,ALPHA)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...Check input values. Return zero outside allowed phase space.
+ PYMAEL=0D0
+ IF(X1.LE.2D0*R1.OR.X1.GE.1D0+R1**2-R2**2) RETURN
+ IF(X2.LE.2D0*R2.OR.X2.GE.1D0+R2**2-R1**2) RETURN
+ IF(X1+X2.LE.1D0+(R1+R2)**2) RETURN
+ IF((2D0-2D0*X1-2D0*X2+X1*X2+2D0*R1**2+2D0*R2**2)**2.GE.
+ &(X1**2-4D0*R1**2)*(X2**2-4D0*R2**2)) RETURN
+ ALPCOR=MAX(0D0,MIN(1D0,ALPHA))
+
+C...Initial values and flags.
+ ICLASS=NI/5
+ ICOMBI=NI-5*ICLASS
+ ISSET1=0
+ ISSET2=0
+ ISSET4=0
+
+C... Phase space.
+ PS=SQRT((1D0-(R1+R2)**2)*(1D0-(R1-R2)**2))
+
+C...Eikonal expression; also acts as default.
+ IF(ICLASS.LE.1.OR.ICLASS.GE.17.OR.ICOMBI.EQ.0) THEN
+ RLO=PS
+ IF(ICOMBI.EQ.0.OR.ICOMBI.EQ.1) THEN
+ ANUM=0D0
+ ELSEIF(ICOMBI.EQ.2) THEN
+ ANUM=(2D0-X1-X2)**2
+ ELSEIF(ICOMBI.EQ.3) THEN
+ ANUM=ALPCOR*(2D0-X1-X2)**2
+ ELSE
+ ANUM=0.5D0*(2D0-X1-X2)**2
+ ENDIF
+ RFO=PS*2D0*((X1+X2-1D0+ANUM-R1**2-R2**2)/
+ & ((1D0+R1**2-R2**2-X1)*(1D0+R2**2-R1**2-X2))-
+ & R1**2/(1D0+R2**2-R1**2-X2)**2-
+ & R2**2/(1D0+R1**2-R2**2-X1)**2)
+ ICOMBI=0
+
+C...V -> q qbar (V = gamma*/Z0/W+-/...).
+ ELSEIF(ICLASS.EQ.2) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(2-R1**2-R1**4+6*R1*R2-R2**2+2*R1**2*R2**2-R2**4)/2.D0
+ RFO1=-1.D0*(3+6*R1**2+R1**4-6*R1*R2+6*R1**3*R2-2*R2**2
+ & -6*R1**2*R2**2+6*R1*R2**3+R2**4-3*X1+6*R1*R2*X1
+ & +2*R2**2*X1+X1**2-2*R1**2*X1**2+3*R1**2*(2-X1-X2)
+ & +6*R1*R2*(2-X1-X2)-R2**2*(2-X1-X2)-2*X1*(2-X1-X2)
+ & -5*R1**2*X1*(2-X1-X2)+R2**2*X1*(2-X1-X2)+X1**2*(2-X1-X2)
+ & -3*(2-X1-X2)**2-3*R1**2*(2-X1-X2)**2+R2**2*(2-X1-X2)**2
+ & +2*X1*(2-X1-X2)**2+(2-X1-X2)**3-X2)/
+ & (-1+R1**2-R2**2+X2)**2
+ RFO1=RFO1-2*(-3+R1**2-6*R1*R2+6*R1**3*R2+3*R2**2-4*R1**2*R2**2
+ & +6*R1*R2**3+2*X1+3*R1**2*X1+R2**2*X1-X1**2-R1**2*X1**2
+ & -R2**2*X1**2+4*(2-X1-X2)+2*R1**2*(2-X1-X2)+3*R1*R2*(2-X1
+ & -X2)-R2**2*(2-X1-X2)-3*X1*(2-X1-X2)-2*R1**2*X1*(2-X1-X2)
+ & +X1**2*(2-X1-X2)-(2-X1-X2)**2-R1**2*(2-X1-X2)**2+R1*R2*(2
+ & -X1-X2)**2+X1*(2-X1-X2)**2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ RFO1=RFO1-1.D0*(-1+2*R1**2+R1**4+6*R1*R2+6*R1**3*R2-2*R2**2
+ & -6*R1**2*R2**2+6*R1*R2**3+R2**4-X1-2*R1**2*X1-6*R1*R2*X1
+ & +8*R2**2*X1+X1**2-2*R2**2*X1**2-R1**2*(2-X1-X2)+R2**2*(2
+ & -X1-X2)-R1**2*X1*(2-X1-X2)+R2**2*X1*(2-X1-X2)+X1**2*
+ & (2-X1-X2)+X2)/(-1-R1**2+R2**2+X1)**2
+ RFO1=RFO1/2.D0
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(2-R1**2-R1**4-6*R1*R2-R2**2+2*R1**2*R2**2-R2**4)/2.D0
+ RFO2=-1*(3+6*R1**2+R1**4+6*R1*R2-6*R1**3*R2-2*R2**2
+ & -6*R1**2*R2**2-6*R1*R2**3+R2**4-3*X1-6*R1*R2*X1+2*R2**2*X1
+ & +X1**2-2*R1**2*X1**2+3*R1**2*(2-X1-X2)-6*R1*R2*(2-X1-X2)
+ & -R2**2*(2-X1-X2)-2*X1*(2-X1-X2)-5*R1**2*X1*(2-X1-X2)
+ & +R2**2*X1*(2-X1-X2)+X1**2*(2-X1-X2)-3*(2-X1-X2)**2
+ & -3*R1**2*(2-X1-X2)**2+R2**2*(2-X1-X2)**2+2*X1*(2-X1-X2)**2
+ & +(2-X1-X2)**3-X2)/(-1+R1**2-R2**2+X2)**2
+ RFO2=RFO2-2*(-3+R1**2+6*R1*R2-6*R1**3*R2+3*R2**2-4*R1**2*R2**2
+ & -6*R1*R2**3+2*X1+3*R1**2*X1+R2**2*X1-X1**2-R1**2*X1**2
+ & -R2**2*X1**2+4*(2-X1-X2)+2*R1**2*(2-X1-X2)-3*R1*R2*(2-X1
+ & -X2)-R2**2*(2-X1-X2)-3*X1*(2-X1-X2)-2*R1**2*X1*(2-X1-X2)
+ & +X1**2*(2-X1-X2)-(2-X1-X2)**2-R1**2*(2-X1-X2)**2-R1*R2*(2
+ & -X1-X2)**2+X1*(2-X1-X2)**2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ RFO2=RFO2-1*(-1+2*R1**2+R1**4-6*R1*R2-6*R1**3*R2-2*R2**2
+ & -6*R1**2*R2**2-6*R1*R2**3+R2**4-X1-2*R1**2*X1+6*R1*R2*X1
+ & +8*R2**2*X1+X1**2-2*R2**2*X1**2-R1**2*(2-X1-X2)+R2**2*(2-X1
+ & -X2)-R1**2*X1*(2-X1-X2)+R2**2*X1*(2-X1-X2)+X1**2*(2-X1-X2)
+ & +X2)/(-1-R1**2+R2**2+X1)**2
+ RFO2=RFO2/2.D0
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(2D0-R1**2-R1**4-R2**2+2D0*R1**2*R2**2-R2**4)/2D0
+ RFO4=(1-R1**4+6*R1**2*R2**2-R2**4+X1+3*R1**2*X1-9*R2**2*X1
+ & -3*X1**2-R1**2*X1**2+3*R2**2*X1**2+X1**3-X2-R1**2*X2
+ & +R2**2*X2-R1**2*X1*X2+R2**2*X1*X2+X1**2*X2)/
+ & (-1-R1**2+R2**2+X1)**2
+ RFO4=RFO4
+ & -2*(1+R1**2+R2**2-4*R1**2*R2**2+R1**2*X1+2*R2**2*X1-X1**2
+ & -R2**2*X1**2+2*R1**2*X2+R2**2*X2-3*X1*X2+X1**2*X2-X2**2
+ & -R1**2*X2**2+X1*X2**2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ RFO4=RFO4+(1-R1**4+6*R1**2*R2**2-R2**4-X1+R1**2*X1-R2**2*X1+X2
+ & -9*R1**2*X2+3*R2**2*X2+R1**2*X1*X2-R2**2*X1*X2-3*X2**2
+ & +3*R1**2*X2**2-R2**2*X2**2+X1*X2**2+X2**3)/
+ & (-1+R1**2-R2**2+X2)**2
+ RFO4=RFO4/2.D0
+ ISSET4=1
+ ENDIF
+
+C...q -> q V.
+ ELSEIF(ICLASS.EQ.3) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0-2D0*R1**2+R1**4+R2**2-6D0*R1*R2**2
+ & +R1**2*R2**2-2D0*R2**4)
+ RFO1=2*(-1+R1-2*R1**2+2*R1**3-R1**4+R1**5-R2**2+R1*R2**2
+ & -5*R1**2*R2**2+R1**3*R2**2-2*R1*R2**4+2*X1-2*R1*X1
+ & +2*R1**2*X1-2*R1**3*X1+2*R2**2*X1+5*R1*R2**2*X1
+ & +R1**2*R2**2*X1+2*R2**4*X1-X1**2+R1*X1**2-R2**2*X1**2+3*X2
+ & +4*R1**2*X2+R1**4*X2+2*R2**2*X2+2*R1**2*R2**2*X2-4*X1*X2
+ & -2*R1**2*X1*X2-R2**2*X1*X2+X1**2*X2-2*X2**2
+ & -2*R1**2*X2**2+X1*X2**2)/(1-R1**2+R2**2-X2)/(-2+X1+X2)
+ RFO1=RFO1+(2*R2**2+6*R1*R2**2-6*R1**2*R2**2+6*R1**3*R2**2
+ & +2*R2**4+6*R1*R2**4-R2**2*X1+R1**2*R2**2*X1-R2**4*X1+X2
+ & -R1**4*X2-3*R2**2*X2-6*R1*R2**2*X2+9*R1**2*R2**2*X2
+ & -2*R2**4*X2-X1*X2+R1**2*X1*X2-X2**2-3*R1**2*X2**2
+ & +2*R2**2*X2**2+X1*X2**2)/(-1+R1**2-R2**2+X2)**2
+ RFO1=RFO1+(-4-8*R1**2-4*R1**4+4*R2**2-4*R1**2*R2**2+8*R2**4
+ & +9*X1+10*R1**2*X1+R1**4*X1-3*R2**2*X1+6*R1*R2**2*X1
+ & +R1**2*R2**2*X1-2*R2**4*X1-6*X1**2-2*R1**2*X1**2+X1**3
+ & +7*X2+8*R1**2*X2+R1**4*X2-7*R2**2*X2+6*R1*R2**2*X2
+ & +R1**2*R2**2*X2-2*R2**4*X2-9*X1*X2-3*R1**2*X1*X2
+ & +2*R2**2*X1*X2+2*X1**2*X2-3*X2**2-R1**2*X2**2
+ & +2*R2**2*X2**2+X1*X2**2)/(-2+X1+X2)**2
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0-2D0*R1**2+R1**4+R2**2+6D0*R1*R2**2
+ & +R1**2*R2**2-2D0*R2**4)
+ RFO2=2*(1+R1+2*R1**2+2*R1**3+R1**4+R1**5+R2**2+R1*R2**2
+ & +5*R1**2*R2**2+R1**3*R2**2-2*R1*R2**4-2*X1-2*R1*X1
+ & -2*R1**2*X1-2*R1**3*X1-2*R2**2*X1+5*R1*R2**2*X1
+ & -R1**2*R2**2*X1-2*R2**4*X1+X1**2+R1*X1**2+R2**2*X1**2-3*X2
+ & -4*R1**2*X2-R1**4*X2-2*R2**2*X2-2*R1**2*R2**2*X2+4*X1*X2
+ & +2*R1**2*X1*X2+R2**2*X1*X2-X1**2*X2+2*X2**2+2*R1**2*X2**2
+ & -X1*X2**2)/(-1+R1**2-R2**2+X2)/(-2+X1+X2)
+ RFO2=RFO2+(2*R2**2-6*R1*R2**2-6*R1**2*R2**2-6*R1**3*R2**2
+ & +2*R2**4-6*R1*R2**4-R2**2*X1+R1**2*R2**2*X1-R2**4*X1+X2
+ & -R1**4*X2-3*R2**2*X2+6*R1*R2**2*X2+9*R1**2*R2**2*X2
+ & -2*R2**4*X2-X1*X2+R1**2*X1*X2-X2**2-3*R1**2*X2**2
+ & +2*R2**2*X2**2+X1*X2**2)/(-1+R1**2-R2**2+X2)**2
+ RFO2=RFO2+(-4-8*R1**2-4*R1**4+4*R2**2-4*R1**2*R2**2+8*R2**4+9*X1
+ & +10*R1**2*X1+R1**4*X1-3*R2**2*X1-6*R1*R2**2*X1
+ & +R1**2*R2**2*X1-2*R2**4*X1-6*X1**2-2*R1**2*X1**2+X1**3
+ & +7*X2+8*R1**2*X2+R1**4*X2-7*R2**2*X2-6*R1*R2**2*X2
+ & +R1**2*R2**2*X2-2*R2**4*X2-9*X1*X2-3*R1**2*X1*X2
+ & +2*R2**2*X1*X2+2*X1**2*X2-3*X2**2-R1**2*X2**2+2*R2**2*X2**2
+ & +X1*X2**2)/(-2+X1+X2)**2
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1.D0-2.D0*R1**2+R1**4+R2**2+R1**2*R2**2-2.D0*R2**4)
+ RFO4=2*(1+2*R1**2+R1**4+R2**2+5*R1**2*R2**2-2*X1-2*R1**2*X1
+ & -2*R2**2*X1-R1**2*R2**2*X1-2*R2**4*X1+X1**2+R2**2*X1**2
+ & -3*X2-4*R1**2*X2-R1**4*X2-2*R2**2*X2-2*R1**2*R2**2*X2
+ & +4*X1*X2+2*R1**2*X1*X2+R2**2*X1*X2-X1**2*X2+2*X2**2
+ & +2*R1**2*X2**2-X1*X2**2)/(-1+R1**2-R2**2+X2)/(-2+X1+X2)
+ RFO4=RFO4+(2*R2**2-6*R1**2*R2**2+2*R2**4-R2**2*X1+R1**2*R2**2*X1
+ & -R2**4*X1+X2-R1**4*X2-3*R2**2*X2+9*R1**2*R2**2*X2
+ & -2*R2**4*X2-X1*X2+R1**2*X1*X2-X2**2-3*R1**2*X2**2
+ & +2*R2**2*X2**2+X1*X2**2)/(-1+R1**2-R2**2+X2)**2
+ RFO4=RFO4+(-4-8*R1**2-4*R1**4+4*R2**2-4*R1**2*R2**2+8*R2**4+9*X1
+ & +10*R1**2*X1+R1**4*X1-3*R2**2*X1+R1**2*R2**2*X1-2*R2**4*X1
+ & -6*X1**2-2*R1**2*X1**2+X1**3+7*X2+8*R1**2*X2+R1**4*X2
+ & -7*R2**2*X2+R1**2*R2**2*X2-2*R2**4*X2-9*X1*X2-3*R1**2*X1*X2
+ & +2*R2**2*X1*X2+2*X1**2*X2-3*X2**2-R1**2*X2**2+2*R2**2*X2**2
+ & +X1*X2**2)/(2-X1-X2)**2
+ ISSET4=1
+ ENDIF
+
+C...S -> q qbar (S = h0/H0/A0/H+-/...).
+ ELSEIF(ICLASS.EQ.4) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0-R1**2-R2**2-2D0*R1*R2)
+ RFO1=-(-1+R1**4-2*R1*R2-2*R1**3*R2-6*R1**2*R2**2-2*R1*R2**3
+ & +R2**4+X1-R1**2*X1+2*R1*R2*X1+3*R2**2*X1+X2+R1**2*X2
+ & -R2**2*X2-X1*X2)/(-1-R1**2+R2**2+X1)**2
+ & -2*(R1**2+R1**4-2*R1**3*R2+R2**2-6*R1**2*R2**2-2*R1*R2**3
+ & +R2**4-R1**2*X1+R1*R2*X1+2*R2**2*X1+2*R1**2*X2+R1*R2*X2
+ & -R2**2*X2-X1*X2)/(-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ & -(-1+R1**4-2*R1*R2-2*R1**3*R2-6*R1**2*R2**2-2*R1*R2**3
+ & +R2**4+X1-R1**2*X1+R2**2*X1+X2+3*R1**2*X2+2*R1*R2*X2
+ & -R2**2*X2-X1*X2)/(-1+R1**2-R2**2+X2)**2
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0-R1**2-R2**2+2D0*R1*R2)
+ RFO2=-(-1+R1**4+2*R1*R2+2*R1**3*R2-6*R1**2*R2**2+2*R1*R2**3
+ & +R2**4+X1-R1**2*X1-2*R1*R2*X1+3*R2**2*X1+X2+R1**2*X2
+ & -R2**2*X2-X1*X2)/(-1-R1**2+R2**2+X1)**2
+ & -(-1+R1**4+2*R1*R2+2*R1**3*R2-6*R1**2*R2**2+2*R1*R2**3
+ & +R2**4+X1-R1**2*X1+R2**2*X1+X2+3*R1**2*X2-2*R1*R2*X2
+ & -R2**2*X2-X1*X2)/(-1+R1**2-R2**2+X2)**2
+ & +2*(-R1**2-R1**4-2*R1**3*R2-R2**2+6*R1**2*R2**2
+ & -2*R1*R2**3-R2**4+R1**2*X1+R1*R2*X1-2*R2**2*X1
+ & -2*R1**2*X2+R1*R2*X2+R2**2*X2+X1*X2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1D0-R1**2-R2**2)
+ RFO4=-(-1+R1**4-6*R1**2*R2**2+R2**4+X1-R1**2*X1+3*R2**2*X1+X2
+ & +R1**2*X2-R2**2*X2-X1*X2)/(-1-R1**2+R2**2+X1)**2
+ & -2*(R1**2+R1**4+R2**2-6*R1**2*R2**2+R2**4-R1**2*X1
+ & +2*R2**2*X1+2*R1**2*X2-R2**2*X2-X1*X2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ & -(-1+R1**4-6*R1**2*R2**2+R2**4+X1-R1**2*X1+R2**2*X1
+ & +X2+3*R1**2*X2-R2**2*X2-X1*X2)/(-1+R1**2-R2**2+X2)**2
+ ISSET4=1
+ ENDIF
+
+C...q -> q S.
+ ELSEIF(ICLASS.EQ.5) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0+R1**2-R2**2+2D0*R1)
+ RFO1=(4-4*R1**2+4*R2**2-3*X1-2*R1*X1+R1**2*X1-R2**2*X1-5*X2
+ & -2*R1*X2+R1**2*X2-R2**2*X2+X1*X2+X2**2)/(-2+X1+X2)**2
+ & +2*(3-R1-5*R1**2-R1**3+3*R2**2+R1*R2**2-2*X1-R1*X1
+ & +R1**2*X1-4*X2+2*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (1-R1**2+R2**2-X2)/(-2+X1+X2)
+ & +(2-2*R1-6*R1**2-2*R1**3+2*R2**2-2*R1*R2**2-X1+R1**2*X1
+ & -R2**2*X1-3*X2+2*R1*X2+3*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (-1+R1**2-R2**2+X2)**2
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0+R1**2-R2**2-2D0*R1)
+ RFO2=(4-4*R1**2+4*R2**2-3*X1+2*R1*X1+R1**2*X1-R2**2*X1-5*X2
+ & +2*R1*X2+R1**2*X2-R2**2*X2+X1*X2+X2**2)/(-2+X1+X2)**2
+ & +2*(3+R1-5*R1**2+R1**3+3*R2**2-R1*R2**2-2*X1+R1*X1
+ & +R1**2*X1-4*X2+2*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (1-R1**2+R2**2-X2)/(-2+X1+X2)
+ & +(2+2*R1-6*R1**2+2*R1**3+2*R2**2+2*R1*R2**2-X1+R1**2*X1
+ & -R2**2*X1-3*X2-2*R1*X2+3*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (-1+R1**2-R2**2+X2)**2
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1D0+R1**2-R2**2)
+ RFO4=(4-4*R1**2+4*R2**2-3*X1+R1**2*X1-R2**2*X1-5*X2+R1**2*X2
+ & -R2**2*X2+X1*X2+X2**2)/(-2+X1+X2)**2
+ & +2*(3-5*R1**2+3*R2**2-2*X1+R1**2*X1-4*X2+2*R1**2*X2
+ & -R2**2*X2+X1*X2+X2**2)/(1-R1**2+R2**2-X2)/(-2+X1+X2)
+ & +(2-6*R1**2+2*R2**2-X1+R1**2*X1-R2**2*X1-3*X2+3*R1**2*X2
+ & -R2**2*X2+X1*X2+X2**2)/(-1+R1**2-R2**2+X2)**2
+ ISSET4=1
+ ENDIF
+
+C...V -> ~q ~qbar (~q = squark).
+ ELSEIF(ICLASS.EQ.6) THEN
+ RLO1=PS*(1D0-2D0*R1**2+R1**4-2D0*R2**2-2D0*R1**2*R2**2+R2**4)
+ RFO1=2D0*3D0+(1+R1**2+R2**2-X1)*(4*R1**2-X1**2)/
+ & (-1-R1**2+R2**2+X1)**2
+ & -2D0*(-1-3*R1**2-R2**2+X1+X1**2/2+X2-X1*X2/2)/
+ & (-1-R1**2+R2**2+X1)
+ & +(1+R1**2+R2**2-X2)*(4*R2**2-X2**2)
+ & /(-1+R1**2-R2**2+X2)**2
+ & -2D0*(-1-R1**2-3*R2**2+X1+X2-X1*X2/2+X2**2/2)/
+ & (-1+R1**2-R2**2+X2)
+ & -(-4*R1**2-4*R1**4-4*R2**2-8*R1**2*R2**2-4*R2**4+2*X1
+ & +6*R1**2*X1+6*R2**2*X1-2*X1**2+2*X2+6*R1**2*X2+6*R2**2*X2
+ & -4*X1*X2-2*R1**2*X1*X2-2*R2**2*X1*X2+X1**2*X2-2*X2**2
+ & +X1*X2**2)/(-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ ISSET1=1
+
+C...~q -> ~q V.
+ ELSEIF(ICLASS.EQ.7) THEN
+ RLO1=PS*(1D0-2D0*R1**2+R1**4-2D0*R2**2-2D0*R1**2*R2**2+R2**4)
+ RFO1=16*R2**2+8*(4*R2**2+2*R2**2*X1+X2+R1**2*X2+R2**2*X2-X1*X2
+ & -2*X2**2)/(3*(-1+R1**2-R2**2+X2))+8*(1+R1**2+R2**2-X2)*
+ & (4*R2**2-X2**2)/(3*(-1+R1**2-R2**2+X2)**2)+8*(X1+X2)*
+ & (-1-2*R1**2-R1**4-2*R2**2+2*R1**2*R2**2-R2**4+2*X1
+ & +2*R1**2*X1+2*R2**2*X1-X1**2+2*X2+2*R1**2*X2+2*R2**2*X2
+ & -2*X1*X2-X2**2)/(3*(-2+X1+X2)**2)+8*(-1-R1**2+R2**2-X1)*
+ & (2*R2**2*X1+X2+R1**2*X2+R2**2*X2-X1*X2-X2**2)/
+ & (3*(-1+R1**2-R2**2+X2)*(-2+X1+X2))+8*(1+2*R1**2+R1**4
+ & +2*R2**2-2*R1**2*R2**2+R2**4-2*X1-2*R1**2*X1-4*R2**2*X1
+ & +X1**2-3*X2-3*R1**2*X2-3*R2**2*X2+3*X1*X2+2*X2**2)/
+ & (3*(-2+X1+X2))
+ RFO1=3D0*RFO1/8D0
+ ISSET1=1
+
+C...S -> ~q ~qbar.
+ ELSEIF(ICLASS.EQ.8) THEN
+ RLO1=PS
+ RFO1=(-1-2*R1**2-R1**4-2*R2**2+2*R1**2*R2**2-R2**4+2*X1
+ & +2*R1**2*X1+2*R2**2*X1-X1**2-R2**2*X1**2+2*X2+2*R1**2*X2
+ & +2*R2**2*X2-3*X1*X2-R1**2*X1*X2-R2**2*X1*X2+X1**2*X2-X2**2
+ & -R1**2*X2**2+X1*X2**2)/
+ & (1+R1**2-R2**2-X1)**2/(-1+R1**2-R2**2+X2)**2
+ RFO1=2D0*RFO1
+ ISSET1=1
+
+C...~q -> ~q S.
+ ELSEIF(ICLASS.EQ.9) THEN
+ RLO1=PS
+ RFO1=(-1-R1**2-R2**2+X2)/(-1+R1**2-R2**2+X2)**2
+ & +(1+R1**2-R2**2+X1)/(-1+R1**2-R2**2+X2)/(-2+X1+X2)
+ & -(X1+X2)/(-2+X1+X2)**2
+ ISSET1=1
+
+C...chi -> q ~qbar (chi = neutralino/chargino).
+ ELSEIF(ICLASS.EQ.10) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0+R1**2-R2**2+2D0*R1)
+ RFO1=(2*R1+X1)*(-1-R1**2-R2**2+X1)/(-1-R1**2+R2**2+X1)**2
+ & +2*(-1-R1**2-2*R1**3-R2**2-2*R1*R2**2+3*X1/2+R1*X1
+ & -R1**2*X1/2-R2**2*X1/2+X2+R1*X2+R1**2*X2-X1*X2/2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ & +(2-2*R1-6*R1**2-2*R1**3+2*R2**2-2*R1*R2**2-X1+R1**2*X1
+ & -R2**2*X1-3*X2+2*R1*X2+3*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (-1+R1**2-R2**2+X2)**2
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0-2D0*R1+R1**2-R2**2)
+ RFO2=(2*R1-X1)*(1+R1**2+R2**2-X1)/(-1-R1**2+R2**2+X1)**2
+ & +2*(-1-R1**2+2*R1**3-R2**2+2*R1*R2**2+3*X1/2-R1*X1
+ & -R1**2*X1/2-R2**2*X1/2+X2-R1*X2+R1**2*X2-X1*X2/2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ & +(2+2*R1-6*R1**2+2*R1**3+2*R2**2+2*R1*R2**2-X1+R1**2*X1
+ & -R2**2*X1-3*X2-2*R1*X2+3*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (-1+R1**2-R2**2+X2)**2
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1+R1**2-R2**2)
+ RFO4=X1*(-1-R1**2-R2**2+X1)/(-1-R1**2+R2**2+X1)**2
+ & +2D0*(-1-R1**2-R2**2+3*X1/2-R1**2*X1/2-R2**2*X1/2
+ & +X2+R1**2*X2-X1*X2/2)/
+ & (-1-R1**2+R2**2+X1)/(-1+R1**2-R2**2+X2)
+ & +(2-6*R1**2+2*R2**2-X1+R1**2*X1-R2**2*X1-3*X2+3*R1**2*X2
+ & -R2**2*X2+X1*X2+X2**2)/(-1+R1**2-R2**2+X2)**2
+ ISSET4=1
+ ENDIF
+
+C...~q -> q chi.
+ ELSEIF(ICLASS.EQ.11) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0-(R1+R2)**2)
+ RFO1=(1+R1**2+2*R1*R2+R2**2-X1-X2)*(X1+X2)/(-2+X1+X2)**2
+ & -(-1+R1**4-2*R1*R2-2*R1**3*R2-6*R1**2*R2**2-2*R1*R2**3
+ & +R2**4+X1-R1**2*X1+R2**2*X1+X2+3*R1**2*X2+2*R1*R2*X2
+ & -R2**2*X2-X1*X2)/(-1+R1**2-R2**2+X2)**2
+ & +(-1-2*R1**2-R1**4-2*R1*R2-2*R1**3*R2+2*R1*R2**3+R2**4
+ & +X1+R1**2*X1-2*R1*R2*X1-3*R2**2*X1+2*R1**2*X2-2*R2**2*X2
+ & +X1*X2+X2**2)/(-1+R1**2-R2**2+X2)/(-2+X1+X2)
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0-(R1-R2)**2)
+ RFO2=(1+R1**2-2*R1*R2+R2**2-X1-X2)*(X1+X2)/
+ & (-2+X1+X2)**2
+ & -(-1+R1**4+2*R1*R2+2*R1**3*R2-6*R1**2*R2**2+2*R1*R2**3
+ & +R2**4+X1-R1**2*X1+R2**2*X1+X2+3*R1**2*X2-2*R1*R2*X2
+ & -R2**2*X2-X1*X2)/(-1+R1**2-R2**2+X2)**2
+ & +(-1-2*R1**2-R1**4+2*R1*R2+2*R1**3*R2-2*R1*R2**3+R2**4
+ & +X1+R1**2*X1+2*R1*R2*X1-3*R2**2*X1+2*R1**2*X2-2*R2**2*X2
+ & +X1*X2+X2**2)/(-1+R1**2-R2**2+X2)/(-2+X1+X2)
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1D0-R1**2-R2**2)
+ RFO4=(1+R1**2+R2**2-X1-X2)*(X1+X2)/(-2+X1+X2)**2
+ & -(-1+R1**4-6*R1**2*R2**2+R2**4+X1-R1**2*X1+R2**2*X1+X2
+ & +3*R1**2*X2-R2**2*X2-X1*X2)/
+ & (-1+R1**2-R2**2+X2)**2
+ & -(-1-2*R1**2-R1**4+R2**4+X1+R1**2*X1-3*R2**2*X1
+ & +2*R1**2*X2-2*R2**2*X2+X1*X2+X2**2)/
+ & (2-X1-X2)/(-1+R1**2-R2**2+X2)
+ ISSET4=1
+ ENDIF
+
+C...q -> ~q chi.
+ ELSEIF(ICLASS.EQ.12) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0-R1**2+R2**2+2D0*R2)
+ RFO1=(2*R2+X2)*(-1-R1**2-R2**2+X2)/(-1+R1**2-R2**2+X2)**2
+ & +(4+4*R1**2-4*R2**2-5*X1-R1**2*X1-2*R2*X1+R2**2*X1+X1**2
+ & -3*X2-R1**2*X2-2*R2*X2+R2**2*X2+X1*X2)/
+ & (-2+X1+X2)**2-2*(-1-R1**2+R2+R1**2*R2-R2**2-R2**3+X1
+ & +R2*X1+R2**2*X1+2*X2+R1**2*X2-X1*X2/2-X2**2/2)/
+ & (2-X1-X2)/(-1+R1**2-R2**2+X2)
+ ISSET1=1
+ END IF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0-R1**2+R2**2-2D0*R2)
+ RFO2=(2*R2-X2)*(1+R1**2+R2**2-X2)/(-1+R1**2-R2**2+X2)**2
+ & +(4+4*R1**2-4*R2**2-5*X1-R1**2*X1+2*R2*X1+R2**2*X1+X1**2
+ & -3*X2-R1**2*X2+2*R2*X2+R2**2*X2+X1*X2)/
+ & (-2+X1+X2)**2-2*(-1-R1**2-R2-R1**2*R2-R2**2+R2**3+X1
+ & -R2*X1+R2**2*X1+2*X2+R1**2*X2-X1*X2/2-X2**2/2)/
+ & (2-X1-X2)/(-1+R1**2-R2**2+X2)
+ ISSET2=1
+ END IF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1D0-R1**2+R2**2)
+ RFO4=X2*(-1-R1**2-R2**2+X2)/(-1+R1**2-R2**2+X2)**2
+ & +(4+4*R1**2-4*R2**2-5*X1-R1**2*X1+R2**2*X1+X1**2
+ & -3*X2-R1**2*X2+R2**2*X2+X1*X2)/
+ & (-2+X1+X2)**2-2*(-1-R1**2-R2**2+X1+R2**2*X1+2*X2
+ & +R1**2*X2-X1*X2/2-X2**2/2)/
+ & (2-X1-X2)/(-1+R1**2-R2**2+X2)
+ ISSET4=1
+ END IF
+
+C...~g -> q ~qbar.
+ ELSEIF(ICLASS.EQ.13) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0+R1**2-R2**2+2D0*R1)
+ RFO1=4*(2*R1+X1)*(-1-R1**2-R2**2+X1)/(3*(-1-R1**2+R2**2+X1)**2)
+ & -(-1-R1**2-2*R1**3-R2**2-2*R1*R2**2+3*X1/2+R1*X1-R1**2*X1/2
+ & -R2**2*X1/2+X2+R1*X2+R1**2*X2-X1*X2/2)/(3*(-1-R1**2+R2**2
+ & +X1)*(-1+R1**2-R2**2+X2))-3*(-1+R1-R1**2-R1**3-R2**2
+ & +R1*R2**2+2*X1+R2**2*X1-X1**2/2+X2+R1*X2+R1**2*X2-X1*X2/2)/
+ & ((-1-R1**2+R2**2+X1)*(2-X1-X2))+3*(4-4*R1**2+4*R2**2-3*X1
+ & -2*R1*X1+R1**2*X1-R2**2*X1-5*X2-2*R1*X2+R1**2*X2-R2**2*X2
+ & +X1*X2+X2**2)/(-2+X1+X2)**2+3*(3-R1-5*R1**2-R1**3+3*R2**2
+ & +R1*R2**2-2*X1-R1*X1+R1**2*X1-4*X2+2*R1**2*X2-R2**2*X2
+ & +X1*X2+X2**2)/((1-R1**2+R2**2-X2)*(-2+X1+X2))+4*(2-2*R1
+ & -6*R1**2-2*R1**3+2*R2**2-2*R1*R2**2-X1+R1**2*X1-R2**2*X1
+ & -3*X2+2*R1*X2+3*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (3*(-1+R1**2-R2**2+X2)**2)
+ RFO1=3D0*RFO1/4D0
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0+R1**2-R2**2-2D0*R1)
+ RFO2=4*(2*R1-X1)*(1+R1**2+R2**2-X1)/(3*(-1-R1**2+R2**2+X1)**2)
+ & -3*(-1-R1-R1**2+R1**3-R2**2-R1*R2**2+2*X1+R2**2*X1-X1**2/2
+ & +X2-R1*X2+R1**2*X2-X1*X2/2)/((-1-R1**2+R2**2+X1)*(2-X1-X2))
+ & +(2+2*R1**2-4*R1**3+2*R2**2-4*R1*R2**2-3*X1+2*R1*X1
+ & +R1**2*X1+R2**2*X1-2*X2+2*R1*X2-2*R1**2*X2+X1*X2)/
+ & (6*(-1-R1**2+R2**2+X1)*(-1+R1**2-R2**2+X2))+3*(4-4*R1**2
+ & +4*R2**2-3*X1+2*R1*X1+R1**2*X1-R2**2*X1-5*X2+2*R1*X2
+ & +R1**2*X2-R2**2*X2+X1*X2+X2**2)/(-2+X1+X2)**2+3*(3+R1
+ & -5*R1**2+R1**3+3*R2**2-R1*R2**2-2*X1+R1*X1+R1**2*X1-4*X2
+ & +2*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & ((1-R1**2+R2**2-X2)*(-2+X1+X2))+4*(2+2*R1-6*R1**2+2*R1**3
+ & +2*R2**2+2*R1*R2**2-X1+R1**2*X1-R2**2*X1-3*X2-2*R1*X2
+ & +3*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (3*(-1+R1**2-R2**2+X2)**2)
+ RFO2=3D0*RFO2/4D0
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1D0+R1**2-R2**2)
+ RFO4=8*X1*(-1-R1**2-R2**2+X1)/(3*(-1-R1**2+R2**2+X1)**2)-6*(-1
+ & -R1**2-R2**2+2*X1+R2**2*X1-X1**2/2+X2+R1**2*X2-X1*X2/2)/
+ & ((-1-R1**2+R2**2+X1)*(2-X1-X2))+(2+2*R1**2+2*R2**2-3*X1
+ & +R1**2*X1+R2**2*X1-2*X2-2*R1**2*X2+X1*X2)/(3*(-1-R1**2
+ & +R2**2+X1)*(-1+R1**2-R2**2+X2))+6*(4-4*R1**2+4*R2**2-3*X1
+ & +R1**2*X1-R2**2*X1-5*X2+R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (-2+X1+X2)**2+6*(3-5*R1**2+3*R2**2-2*X1+R1**2*X1-4*X2
+ & +2*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & ((1-R1**2+R2**2-X2)*(-2+X1+X2))+8*(2-6*R1**2+2*R2**2-X1
+ & +R1**2*X1-R2**2*X1-3*X2+3*R1**2*X2-R2**2*X2+X1*X2+X2**2)/
+ & (3*(-1+R1**2-R2**2+X2)**2)
+ RFO4=3D0*RFO4/8D0
+ ISSET4=1
+ ENDIF
+
+C...~q -> q ~g.
+ ELSEIF(ICLASS.EQ.14) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1-R1**2-R2**2-2D0*R1*R2)
+ RFO1=64*(1+R1**2+2*R1*R2+R2**2-X1-X2)*(X1+X2)/(9*(-2+X1+X2)**2)
+ & -16*(-1+R1**4-2*R1*R2-2*R1**3*R2-6*R1**2*R2**2-2*R1*R2**3
+ & +R2**4+X1-R1**2*X1+2*R1*R2*X1+3*R2**2*X1+X2+R1**2*X2
+ & -R2**2*X2-X1*X2)/(-1-R1**2+R2**2+X1)**2-16*(R1**2+R1**4
+ & -2*R1**3*R2+R2**2-6*R1**2*R2**2-2*R1*R2**3+R2**4
+ & -R1**2*X1+R1*R2*X1+2*R2**2*X1+2*R1**2*X2+R1*R2*X2-R2**2*X2
+ & -X1*X2)/((-1-R1**2+R2**2+X1)*(-1+R1**2-R2**2+X2))
+ & -64*(-1+R1**4-2*R1*R2-2*R1**3*R2-6*R1**2*R2**2-2*R1*R2**3
+ & +R2**4+X1-R1**2*X1+R2**2*X1+X2+3*R1**2*X2+2*R1*R2*X2
+ & -R2**2*X2-X1*X2)/(9*(-1+R1**2-R2**2+X2)**2)
+ & +8*(-1+R1**4-2*R1*R2+2*R1**3*R2-2*R2**2-2*R1*R2**3-R2**4
+ & -2*R1**2*X1+2*R2**2*X1+X1**2+X2-3*R1**2*X2-2*R1*R2*X2
+ & +R2**2*X2+X1*X2)/((-1-R1**2+R2**2+X1)*(-2+X1+X2))
+ RFO1=RFO1
+ & +8*(-1-2*R1**2-R1**4-2*R1*R2-2*R1**3*R2+2*R1*R2**3+R2**4
+ & +X1+R1**2*X1-2*R1*R2*X1-3*R2**2*X1+2*R1**2*X2-2*R2**2*X2
+ & +X1*X2+X2**2)/(9*(2-X1-X2)*(-1+R1**2-R2**2+X2))
+ RFO1=9D0*RFO1/64D0
+ ISSET1=1
+ ENDIF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1-R1**2-R2**2+2D0*R1*R2)
+ RFO2=64*(1+R1**2-2*R1*R2+R2**2-X1-X2)*(X1+X2)/(9*(-2+X1+X2)**2)
+ & -16*(-1+R1**4+2*R1*R2+2*R1**3*R2-6*R1**2*R2**2+2*R1*R2**3
+ & +R2**4+X1-R1**2*X1-2*R1*R2*X1+3*R2**2*X1+X2+R1**2*X2
+ & -R2**2*X2-X1*X2)/(-1-R1**2+R2**2+X1)**2-64*(-1+R1**4
+ & +2*R1*R2+2*R1**3*R2-6*R1**2*R2**2+2*R1*R2**3+R2**4+X1
+ & -R1**2*X1+R2**2*X1+X2+3*R1**2*X2-2*R1*R2*X2-R2**2*X2
+ & -X1*X2)/(9*(-1+R1**2-R2**2+X2)**2)+16*(-R1**2-R1**4
+ & -2*R1**3*R2-R2**2+6*R1**2*R2**2-2*R1*R2**3-R2**4+R1**2*X1
+ & +R1*R2*X1-2*R2**2*X1-2*R1**2*X2+R1*R2*X2+R2**2*X2+X1*X2)/
+ & ((-1-R1**2+R2**2+X1)*(-1+R1**2-R2**2+X2))
+ RFO2=RFO2
+ & +8*(-1+R1**4+2*R1*R2-2*R1**3*R2-2*R2**2+2*R1*R2**3-R2**4
+ & -2*R1**2*X1+2*R2**2*X1+X1**2+X2-3*R1**2*X2+2*R1*R2*X2
+ & +R2**2*X2+X1*X2)/((-1-R1**2+R2**2+X1)*(-2+X1+X2))
+ & +8*(-1-2*R1**2-R1**4+2*R1*R2+2*R1**3*R2-2*R1*R2**3
+ & +R2**4+X1+R1**2*X1+2*R1*R2*X1-3*R2**2*X1+2*R1**2*X2
+ & -2*R2**2*X2+X1*X2+X2**2)/(9*(2-X1-X2)*(-1+R1**2-R2**2+X2))
+ RFO2=9D0*RFO2/64D0
+ ISSET2=1
+ ENDIF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1-R1**2-R2**2)
+ RFO4=128*(1+R1**2+R2**2-X1-X2)*(X1+X2)/(9*(-2+X1+X2)**2)-32*(-1
+ & +R1**4-6*R1**2*R2**2+R2**4+X1-R1**2*X1+3*R2**2*X1+X2
+ & +R1**2*X2-R2**2*X2-X1*X2)/(-1-R1**2+R2**2+X1)**2
+ & -32*(R1**2+R1**4+R2**2-6*R1**2*R2**2+R2**4-R1**2*X1
+ & +2*R2**2*X1+2*R1**2*X2-R2**2*X2-X1*X2)/
+ & ((-1-R1**2+R2**2+X1)*(-1+R1**2-R2**2+X2))-128*(-1+R1**4
+ & -6*R1**2*R2**2+R2**4+X1-R1**2*X1+R2**2*X1+X2+3*R1**2*X2
+ & -R2**2*X2-X1*X2)/(9*(-1+R1**2-R2**2+X2)**2)
+ & +16*(-1+R1**4-2*R2**2-R2**4-2*R1**2*X1+2*R2**2*X1+X1**2
+ & +X2-3*R1**2*X2+R2**2*X2+X1*X2)/
+ & ((-1-R1**2+R2**2+X1)*(-2+X1+ X2))
+ RFO4=RFO4+16*(-1-2*R1**2-R1**4+R2**4+X1+R1**2*X1-3*R2**2*X1
+ & +2*R1**2*X2-2*R2**2*X2+X1*X2+X2**2)/
+ & (9*(1-R1**2+R2**2-X2)*(-2+X1+X2))
+ RFO4=9D0*RFO4/128D0
+ ISSET4=1
+ ENDIF
+
+C...q -> ~q ~g.
+ ELSEIF(ICLASS.EQ.15) THEN
+ IF(ICOMBI.EQ.1.OR.ICOMBI.EQ.3) THEN
+ RLO1=PS*(1D0-R1**2+R2**2+2D0*R2)
+ RFO1=32*(2*R2+X2)*(-1-R1**2-R2**2+X2)/(9*(-1+R1**2-R2**2+X2)**2)
+ & +8*(-1-R1**2-2*R1**2*R2-R2**2-2*R2**3+X1+R2*X1+R2**2*X1
+ & +3*X2/2-R1**2*X2/2+R2*X2-R2**2*X2/2-X1*X2/2)/
+ & ((-1-R1**2+R2**2+X1)*(-1+R1**2-R2**2+X2))+8*(2+2*R1**2-2*R2
+ & -2*R1**2*R2-6*R2**2-2*R2**3-3*X1-R1**2*X1+2*R2*X1
+ & +3*R2**2*X1+X1**2-X2-R1**2*X2+R2**2*X2+X1*X2)/
+ & (-1-R1**2+R2**2+X1)**2+32*(4+4*R1**2-4*R2**2-5*X1
+ & -R1**2*X1-2*R2*X1+R2**2*X1+X1**2-3*X2-R1**2*X2-2*R2*X2
+ & +R2**2*X2+X1*X2)/(9*(-2+X1+X2)**2)
+ RFO1=RFO1+8*(3+3*R1**2-R2+R1**2*R2-5*R2**2-R2**3-4*X1-R1**2*X1
+ & +2*R2**2*X1+X1**2-2*X2-R2*X2+R2**2*X2+X1*X2)/
+ & ((-1-R1**2+R2**2+X1)*(2-X1-X2))+8*(-1-R1**2+R2+R1**2*R2
+ & -R2**2-R2**3+X1+R2*X1+R2**2*X1+2*X2+R1**2*X2-X1*X2/2
+ & -X2**2/2)/(9*(2-X1-X2)*(-1+R1**2-R2**2+X2))
+ RFO1=9D0*RFO1/32D0
+ ISSET1=1
+ END IF
+ IF(ICOMBI.EQ.2.OR.ICOMBI.EQ.3) THEN
+ RLO2=PS*(1D0-R1**2+R2**2-2D0*R2)
+ RFO2=32*(2*R2-X2)*(1+R1**2+R2**2-X2)/(9*(-1+R1**2-R2**2+X2)**2)
+ & +8*(-1-R1**2+2*R1**2*R2-R2**2+2*R2**3+X1-R2*X1+R2**2*X1
+ & +3*X2/2-R1**2*X2/2-R2*X2-R2**2*X2/2-X1*X2/2)/
+ & ((-1-R1**2+R2**2+X1)*(-1+R1**2-R2**2+X2))+8*(2+2*R1**2+2*R2
+ & +2*R1**2*R2-6*R2**2+2*R2**3-3*X1-R1**2*X1-2*R2*X1
+ & +3*R2**2*X1+X1**2-X2-R1**2*X2+R2**2*X2+X1*X2)/
+ & (-1-R1**2+R2**2+X1)**2+8*(3+3*R1**2+R2-R1**2*R2-5*R2**2
+ & +R2**3-4*X1-R1**2*X1+2*R2**2*X1+X1**2-2*X2+R2*X2+R2**2*X2
+ & +X1*X2)/((-1-R1**2+R2**2+X1)*(2-X1-X2))
+ RFO2=RFO2+32*(4+4*R1**2-4*R2**2-5*X1-R1**2*X1+2*R2*X1+R2**2*X1
+ & +X1**2-3*X2-R1**2*X2+2*R2*X2+R2**2*X2+X1*X2)/
+ & (9*(-2+X1+X2)**2)+8*(-1-R1**2-R2-R1**2*R2-R2**2+R2**3+X1
+ & -R2*X1+R2**2*X1+2*X2+R1**2*X2-X1*X2/2-X2**2/2)/
+ & (9*(2-X1-X2)*(-1+R1**2-R2**2+X2))
+ RFO2=9D0*RFO2/32D0
+ ISSET2=1
+ END IF
+ IF(ICOMBI.EQ.4) THEN
+ RLO4=PS*(1D0-R1**2+R2**2)
+ RFO4=64*X2*(-1-R1**2-R2**2+X2)/(9*(-1+R1**2-R2**2+X2)**2)
+ & +16*(-1-R1**2-R2**2+X1+R2**2*X1+3*X2/2-R1**2*X2/2
+ & -R2**2*X2/2-X1*X2/2)/
+ & ((-1-R1**2+R2**2+X1)*(-1+R1**2-R2**2+X2))+16*(3+3*R1**2
+ & -5*R2**2-4*X1-R1**2*X1+2*R2**2*X1+X1**2-2*X2+R2**2*X2
+ & +X1*X2)/((-1-R1**2+R2**2+X1)*(2-X1-X2))
+ & +64*(4+4*R1**2-4*R2**2-5*X1-R1**2*X1+R2**2*X1+X1**2-3*X2
+ & -R1**2*X2+R2**2*X2+X1*X2)/(9*(-2+X1+X2)**2)
+ RFO4=RFO4+16*(2+2*R1**2-6*R2**2-3*X1-R1**2*X1+3*R2**2*X1+X1**2
+ & -X2-R1**2*X2+R2**2*X2+X1*X2)/(-1-R1**2+R2**2+X1)**2
+ & +16*(-1-R1**2-R2**2+X1+R2**2*X1+2*X2+R1**2*X2-X1*X2/2
+ & -X2**2/2)/(9*(2-X1-X2)*(-1+R1**2-R2**2+X2))
+ RFO4=9D0*RFO4/64D0
+ ISSET4=1
+ END IF
+
+C...g -> ~g ~g. Use (9/4)*eikonal. May be changed in the future.
+ ELSEIF(ICLASS.EQ.16) THEN
+ RLO=PS
+ IF(ICOMBI.EQ.0.OR.ICOMBI.EQ.1) THEN
+ ANUM=0D0
+ ELSEIF(ICOMBI.EQ.2) THEN
+ ANUM=(2D0-X1-X2)**2
+ ELSEIF(ICOMBI.EQ.3) THEN
+ ANUM=ALPCOR*(2D0-X1-X2)**2
+ ELSE
+ ANUM=0.5D0*(2D0-X1-X2)**2
+ ENDIF
+ RFO=PS*2D0*((X1+X2-1D0+ANUM-R1**2-R2**2)/
+ & ((1D0+R1**2-R2**2-X1)*(1D0+R2**2-R1**2-X2))-
+ & R1**2/(1D0+R2**2-R1**2-X2)**2-
+ & R2**2/(1D0+R1**2-R2**2-X1)**2)
+ RFO=9D0*RFO/4D0
+ ICOMBI=0
+ ENDIF
+
+C...Find relevant LO and FO expression.
+ IF(ICOMBI.EQ.0) THEN
+ ELSEIF(ICOMBI.EQ.1.AND.ISSET1.EQ.1) THEN
+ RLO=RLO1
+ RFO=RFO1
+ ELSEIF(ICOMBI.EQ.2.AND.ISSET2.EQ.1) THEN
+ RLO=RLO2
+ RFO=RFO2
+ ELSEIF(ICOMBI.EQ.3.AND.ISSET1.EQ.1.AND.ISSET2.EQ.1) THEN
+ RLO=ALPCOR*RLO1+(1D0-ALPCOR)*RLO2
+ RFO=ALPCOR*RFO1+(1D0-ALPCOR)*RFO2
+ ELSEIF(ISSET4.EQ.1) THEN
+ RLO=RLO4
+ RFO=RFO4
+ ELSEIF(ICOMBI.EQ.4.AND.ISSET1.EQ.1.AND.ISSET2.EQ.1) THEN
+ RLO=0.5D0*(RLO1+RLO2)
+ RFO=0.5D0*(RFO1+RFO2)
+ ELSEIF(ISSET1.EQ.1) THEN
+ RLO=RLO1
+ RFO=RFO1
+ ELSE
+ CALL PYERRM(16,'(PYMAEL:) not implemented ME code')
+ RLO=1D0
+ RFO=0D0
+ ENDIF
+
+C...Output.
+ PYMAEL=RFO/RLO
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYBOEI
+C...Modifies an event so as to approximately take into account
+C...Bose-Einstein effects according to a simple phenomenological
+C...parametrization.
+
+ SUBROUTINE PYBOEI(NSAV)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYINT1/
+C...Local arrays and data.
+ DIMENSION DPS(4),KFBE(9),NBE(0:10),BEI(100),BEI3(100),
+ &BEIW(100),BEI3W(100)
+ DATA KFBE/211,-211,111,321,-321,130,310,221,331/
+C...Statement function: squared invariant mass.
+ SDIP(I,J)=((P(I,4)+P(J,4))**2-(P(I,3)+P(J,3))**2-
+ &(P(I,2)+P(J,2))**2-(P(I,1)+P(J,1))**2)
+
+C...Boost event to overall CM frame. Calculate CM energy.
+ IF((MSTJ(51).NE.1.AND.MSTJ(51).NE.2).OR.N-NSAV.LE.1) RETURN
+ DO 100 J=1,4
+ DPS(J)=0D0
+ 100 CONTINUE
+ DO 120 I=1,N
+ KFA=IABS(K(I,2))
+ IF(K(I,1).LE.10.AND.((KFA.GT.10.AND.KFA.LE.20).OR.KFA.EQ.22)
+ & .AND.K(I,3).GT.0) THEN
+ KFMA=IABS(K(K(I,3),2))
+ IF(KFMA.GT.10.AND.KFMA.LE.80) K(I,1)=-K(I,1)
+ ENDIF
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 120
+ DO 110 J=1,4
+ DPS(J)=DPS(J)+P(I,J)
+ 110 CONTINUE
+ 120 CONTINUE
+ CALL PYROBO(0,0,0D0,0D0,-DPS(1)/DPS(4),-DPS(2)/DPS(4),
+ &-DPS(3)/DPS(4))
+ PECM=0D0
+ DO 130 I=1,N
+ IF(K(I,1).GE.1.AND.K(I,1).LE.10) PECM=PECM+P(I,4)
+ 130 CONTINUE
+
+C...Check if we have separated strings
+
+C...Reserve copy of particles by species at end of record.
+ IWP=0
+ IWN=0
+ NBE(0)=N+MSTU(3)
+ NMAX=NBE(0)
+ SMMIN=PECM
+ DO 190 IBE=1,MIN(10,MSTJ(52)+1)
+ NBE(IBE)=NBE(IBE-1)
+ DO 180 I=NSAV+1,N
+ IF(IBE.EQ.MIN(10,MSTJ(52)+1)) THEN
+ DO 140 IIBE=1,IBE-1
+ IF(K(I,2).EQ.KFBE(IIBE)) GOTO 180
+ 140 CONTINUE
+ ELSE
+ IF(K(I,2).NE.KFBE(IBE)) GOTO 180
+ ENDIF
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 180
+ IF(NBE(IBE).GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYBOEI:) no more memory left in PYJETS')
+ RETURN
+ ENDIF
+ NBE(IBE)=NBE(IBE)+1
+ NMAX=NBE(IBE)
+ K(NBE(IBE),1)=I
+ K(NBE(IBE),2)=0
+ K(NBE(IBE),3)=0
+ K(NBE(IBE),4)=0
+ K(NBE(IBE),5)=0
+ P(NBE(IBE),1)=0.0D0
+ P(NBE(IBE),2)=0.0D0
+ P(NBE(IBE),3)=0.0D0
+ P(NBE(IBE),4)=0.0D0
+ P(NBE(IBE),5)=0.0D0
+ SMMIN=MIN(SMMIN,P(I,5))
+C...Check if particles comes from different W's or Z's
+ IF((MSTJ(53).NE.0.OR.MSTJ(56).GT.0).AND.MINT(32).EQ.0) THEN
+ IM=I
+ 150 IF(K(IM,3).GT.0) THEN
+ IM=K(IM,3)
+ IF(ABS(K(IM,2)).NE.24.AND.K(IM,2).NE.23) GOTO 150
+ K(NBE(IBE),5)=IM
+ IF(IWP.EQ.0.AND.K(IM,2).EQ.24) IWP=IM
+ IF(IWN.EQ.0.AND.K(IM,2).EQ.-24) IWN=IM
+ IF(IWP.EQ.0.AND.K(IM,2).EQ.23) IWP=IM
+ IF(IWN.EQ.0.AND.K(IM,2).EQ.23.AND.IM.NE.IWP) IWN=IM
+ ENDIF
+ ENDIF
+C...Check if particles comes from different strings.
+ IF(PARJ(94).GT.0.0D0) THEN
+ IM=I
+ 160 IF(K(IM,3).GT.0) THEN
+ IM=K(IM,3)
+ IF(K(IM,2).NE.92.AND.K(IM,2).NE.91) GOTO 160
+ K(NBE(IBE),5)=IM
+ ENDIF
+ ENDIF
+ DO 170 J=1,3
+ P(NBE(IBE),J)=0D0
+ V(NBE(IBE),J)=0D0
+ 170 CONTINUE
+ P(NBE(IBE),5)=-1.0D0
+ 180 CONTINUE
+ 190 CONTINUE
+ IF(NBE(MIN(9,MSTJ(52)))-NBE(0).LE.1) GOTO 510
+
+C...Calculate separation between W+ and W- or between two Z0's.
+C...No separation if there has been re-connections.
+ SIGW=PARJ(93)
+ IF(IWP.GT.0.AND.IWN.GT.0.AND.MSTJ(56).GT.0.AND.MINT(32).EQ.0) THEN
+ IF(K(IWP,2).EQ.23) THEN
+ DMW=PMAS(23,1)
+ DGW=PMAS(23,2)
+ ELSE
+ DMW=PMAS(24,1)
+ DGW=PMAS(24,2)
+ ENDIF
+ DMP=P(IWP,5)
+ DMN=P(IWN,5)
+ TAUPD=DMP/SQRT((DMP**2-DMW**2)**2+(DGW*(DMP**2)/DMW)**2)
+ TAUND=DMN/SQRT((DMN**2-DMW**2)**2+(DGW*(DMN**2)/DMW)**2)
+ TAUP=-TAUPD*LOG(PYR(IDUM))
+ TAUN=-TAUND*LOG(PYR(IDUM))
+ DXP=TAUP*PYP(IWP,8)/DMP
+ DXN=TAUN*PYP(IWN,8)/DMN
+ DX=DXP+DXN
+ SIGW=1.0D0/(1.0D0/PARJ(93)+REAL(MSTJ(56))*DX)
+ IF(PARJ(94).LT.0.0D0) SIGW=1.0D0/(1.0D0/SIGW-1.0D0/PARJ(94))
+ ENDIF
+
+C...Add separation between strings.
+ IF(PARJ(94).GT.0.0D0) THEN
+ SIGW=1.0D0/(1.0D0/SIGW+1.0D0/PARJ(94))
+ IWP=-1
+ IWN=-1
+ ENDIF
+
+ IF(MSTJ(57).EQ.1.AND.MSTJ(54).LT.0) THEN
+ DO 220 IBE=1,MIN(9,MSTJ(52))
+ DO 210 I1M=NBE(IBE-1)+1,NBE(IBE)
+ Q2MIN=PECM**2
+ I1=K(I1M,1)
+ DO 200 I2M=NBE(IBE-1)+1,NBE(IBE)
+ IF(I2M.EQ.I1M) GOTO 200
+ I2=K(I2M,1)
+ Q2=(P(I1,4)+P(I2,4))**2-(P(I1,1)+P(I2,1))**2-
+ & (P(I1,2)+P(I2,2))**2-(P(I1,3)+P(I2,3))**2-
+ & (P(I1,5)+P(I2,5))**2
+ IF(Q2.GT.0.0D0.AND.Q2.LT.Q2MIN) THEN
+ Q2MIN=Q2
+ ENDIF
+ 200 CONTINUE
+ P(I1M,5)=Q2MIN
+ 210 CONTINUE
+ 220 CONTINUE
+ ENDIF
+
+C...Tabulate integral for subsequent momentum shift.
+ DO 400 IBE=1,MIN(9,MSTJ(52))
+ IF(IBE.NE.1.AND.IBE.NE.4.AND.IBE.LE.7) GOTO 270
+ IF(IBE.EQ.1.AND.MAX(NBE(1)-NBE(0),NBE(2)-NBE(1),NBE(3)-NBE(2))
+ & .LE.1) GOTO 270
+ IF(IBE.EQ.4.AND.MAX(NBE(4)-NBE(3),NBE(5)-NBE(4),NBE(6)-NBE(5),
+ & NBE(7)-NBE(6)).LE.1) GOTO 270
+ IF(IBE.GE.8.AND.NBE(IBE)-NBE(IBE-1).LE.1) GOTO 270
+ IF(IBE.EQ.1) PMHQ=2D0*PYMASS(211)
+ IF(IBE.EQ.4) PMHQ=2D0*PYMASS(321)
+ IF(IBE.EQ.8) PMHQ=2D0*PYMASS(221)
+ IF(IBE.EQ.9) PMHQ=2D0*PYMASS(331)
+ QDEL=0.1D0*MIN(PMHQ,PARJ(93))
+ QDEL3=0.1D0*MIN(PMHQ,PARJ(93)*3.0D0)
+ QDELW=0.1D0*MIN(PMHQ,SIGW)
+ QDEL3W=0.1D0*MIN(PMHQ,SIGW*3.0D0)
+ IF(MSTJ(51).EQ.1) THEN
+ NBIN=MIN(100,NINT(9D0*PARJ(93)/QDEL))
+ NBIN3=MIN(100,NINT(27D0*PARJ(93)/QDEL3))
+ NBINW=MIN(100,NINT(9D0*SIGW/QDELW))
+ NBIN3W=MIN(100,NINT(27D0*SIGW/QDEL3W))
+ BEEX=EXP(0.5D0*QDEL/PARJ(93))
+ BEEX3=EXP(0.5D0*QDEL3/(3.0D0*PARJ(93)))
+ BEEXW=EXP(0.5D0*QDELW/SIGW)
+ BEEX3W=EXP(0.5D0*QDEL3W/(3.0D0*SIGW))
+ BERT=EXP(-QDEL/PARJ(93))
+ BERT3=EXP(-QDEL3/(3.0D0*PARJ(93)))
+ BERTW=EXP(-QDELW/SIGW)
+ BERT3W=EXP(-QDEL3W/(3.0D0*SIGW))
+ ELSE
+ NBIN=MIN(100,NINT(3D0*PARJ(93)/QDEL))
+ NBIN3=MIN(100,NINT(9D0*PARJ(93)/QDEL3))
+ NBINW=MIN(100,NINT(3D0*SIGW/QDELW))
+ NBIN3W=MIN(100,NINT(9D0*SIGW/QDEL3W))
+ ENDIF
+ DO 230 IBIN=1,NBIN
+ QBIN=QDEL*(IBIN-0.5D0)
+ BEI(IBIN)=QDEL*(QBIN**2+QDEL**2/12D0)/SQRT(QBIN**2+PMHQ**2)
+ IF(MSTJ(51).EQ.1) THEN
+ BEEX=BEEX*BERT
+ BEI(IBIN)=BEI(IBIN)*BEEX
+ ELSE
+ BEI(IBIN)=BEI(IBIN)*EXP(-(QBIN/PARJ(93))**2)
+ ENDIF
+ IF(IBIN.GE.2) BEI(IBIN)=BEI(IBIN)+BEI(IBIN-1)
+ 230 CONTINUE
+ DO 240 IBIN=1,NBIN3
+ QBIN=QDEL3*(IBIN-0.5D0)
+ BEI3(IBIN)=QDEL3*(QBIN**2+QDEL3**2/12D0)/SQRT(QBIN**2+PMHQ**2)
+ IF(MSTJ(51).EQ.1) THEN
+ BEEX3=BEEX3*BERT3
+ BEI3(IBIN)=BEI3(IBIN)*BEEX3
+ ELSE
+ BEI3(IBIN)=BEI3(IBIN)*EXP(-(QBIN/(3.0D0*PARJ(93)))**2)
+ ENDIF
+ IF(IBIN.GE.2) BEI3(IBIN)=BEI3(IBIN)+BEI3(IBIN-1)
+ 240 CONTINUE
+ DO 250 IBIN=1,NBINW
+ QBIN=QDELW*(IBIN-0.5D0)
+ BEIW(IBIN)=QDELW*(QBIN**2+QDELW**2/12D0)/SQRT(QBIN**2+PMHQ**2)
+ IF(MSTJ(51).EQ.1) THEN
+ BEEXW=BEEXW*BERTW
+ BEIW(IBIN)=BEIW(IBIN)*BEEXW
+ ELSE
+ BEIW(IBIN)=BEIW(IBIN)*EXP(-(QBIN/SIGW)**2)
+ ENDIF
+ IF(IBIN.GE.2) BEIW(IBIN)=BEIW(IBIN)+BEIW(IBIN-1)
+ 250 CONTINUE
+ DO 260 IBIN=1,NBIN3W
+ QBIN=QDEL3W*(IBIN-0.5D0)
+ BEI3W(IBIN)=QDEL3W*(QBIN**2+QDEL3W**2/12D0)/
+ & SQRT(QBIN**2+PMHQ**2)
+ IF(MSTJ(51).EQ.1) THEN
+ BEEX3W=BEEX3W*BERT3W
+ BEI3W(IBIN)=BEI3W(IBIN)*BEEX3W
+ ELSE
+ BEI3W(IBIN)=BEI3W(IBIN)*EXP(-(QBIN/(3.0D0*SIGW))**2)
+ ENDIF
+ IF(IBIN.GE.2) BEI3W(IBIN)=BEI3W(IBIN)+BEI3W(IBIN-1)
+ 260 CONTINUE
+
+C...Loop through particle pairs and find old relative momentum.
+ 270 DO 390 I1M=NBE(IBE-1)+1,NBE(IBE)-1
+ I1=K(I1M,1)
+ DO 380 I2M=I1M+1,NBE(IBE)
+ IF(MSTJ(53).EQ.1.AND.K(I1M,5).NE.K(I2M,5)) GOTO 380
+ IF(MSTJ(53).EQ.2.AND.K(I1M,5).EQ.K(I2M,5)) GOTO 380
+ I2=K(I2M,1)
+ Q2OLD=(P(I1,4)+P(I2,4))**2-(P(I1,1)+P(I2,1))**2-(P(I1,2)+
+ & P(I2,2))**2-(P(I1,3)+P(I2,3))**2-(P(I1,5)+P(I2,5))**2
+ IF(Q2OLD.LE.0.0D0) GOTO 380
+ QOLD=SQRT(Q2OLD)
+
+C...Calculate new relative momentum.
+ QMOV=0.0D0
+ QMOV3=0.0D0
+ QMOVW=0.0D0
+ QMOV3W=0.0D0
+ IF(QOLD.LT.1D-3*QDEL) THEN
+ GOTO 280
+ ELSEIF(QOLD.LE.QDEL) THEN
+ QMOV=QOLD/3D0
+ ELSEIF(QOLD.LT.(NBIN-0.1D0)*QDEL) THEN
+ RBIN=QOLD/QDEL
+ IBIN=RBIN
+ RINP=(RBIN**3-IBIN**3)/(3*IBIN*(IBIN+1)+1)
+ QMOV=(BEI(IBIN)+RINP*(BEI(IBIN+1)-BEI(IBIN)))*
+ & SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ELSE
+ QMOV=BEI(NBIN)*SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ENDIF
+ 280 Q2NEW=Q2OLD*(QOLD/(QOLD+3D0*PARJ(92)*QMOV))**(2D0/3D0)
+ IF(QOLD.LT.1D-3*QDEL3) THEN
+ GOTO 290
+ ELSEIF(QOLD.LE.QDEL3) THEN
+ QMOV3=QOLD/3D0
+ ELSEIF(QOLD.LT.(NBIN3-0.1D0)*QDEL3) THEN
+ RBIN3=QOLD/QDEL3
+ IBIN3=RBIN3
+ RINP3=(RBIN3**3-IBIN3**3)/(3*IBIN3*(IBIN3+1)+1)
+ QMOV3=(BEI3(IBIN3)+RINP3*(BEI3(IBIN3+1)-BEI3(IBIN3)))*
+ & SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ELSE
+ QMOV3=BEI3(NBIN3)*SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ENDIF
+ 290 Q2NEW3=Q2OLD*(QOLD/(QOLD+3D0*PARJ(92)*QMOV3))**(2D0/3D0)
+ RSCALE=1.0D0
+ IF(MSTJ(54).EQ.2)
+ & RSCALE=1.0D0-EXP(-(QOLD/(2D0*PARJ(93)))**2)
+ IF((IWP.NE.-1.AND.MSTJ(56).LE.0).OR.IWP.EQ.0.OR.IWN.EQ.0.OR.
+ & K(I1M,5).EQ.K(I2M,5)) GOTO 320
+
+ IF(QOLD.LT.1D-3*QDELW) THEN
+ GOTO 300
+ ELSEIF(QOLD.LE.QDELW) THEN
+ QMOVW=QOLD/3D0
+ ELSEIF(QOLD.LT.(NBINW-0.1D0)*QDELW) THEN
+ RBINW=QOLD/QDELW
+ IBINW=RBINW
+ RINPW=(RBINW**3-IBINW**3)/(3*IBINW*(IBINW+1)+1)
+ QMOVW=(BEIW(IBINW)+RINPW*(BEIW(IBINW+1)-BEIW(IBINW)))*
+ & SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ELSE
+ QMOVW=BEIW(NBINW)*SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ENDIF
+ 300 Q2NEW=Q2OLD*(QOLD/(QOLD+3D0*PARJ(92)*QMOVW))**(2D0/3D0)
+ IF(QOLD.LT.1D-3*QDEL3W) THEN
+ GOTO 310
+ ELSEIF(QOLD.LE.QDEL3W) THEN
+ QMOV3W=QOLD/3D0
+ ELSEIF(QOLD.LT.(NBIN3W-0.1D0)*QDEL3W) THEN
+ RBIN3W=QOLD/QDEL3W
+ IBIN3W=RBIN3W
+ RINP3W=(RBIN3W**3-IBIN3W**3)/(3*IBIN3W*(IBIN3W+1)+1)
+ QMOV3W=(BEI3W(IBIN3W)+RINP3W*(BEI3W(IBIN3W+1)-
+ & BEI3W(IBIN3W)))*SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ELSE
+ QMOV3W=BEI3W(NBIN3W)*SQRT(Q2OLD+PMHQ**2)/Q2OLD
+ ENDIF
+ 310 Q2NEW3=Q2OLD*(QOLD/(QOLD+3D0*PARJ(92)*QMOV3W))**(2D0/3D0)
+ IF(MSTJ(54).EQ.2)
+ & RSCALE=1.0D0-EXP(-(QOLD/(2D0*SIGW))**2)
+
+ 320 CALL PYBESQ(I1,I2,NMAX,Q2OLD,Q2NEW)
+ DO 330 J=1,3
+ P(I1M,J)=P(I1M,J)+P(NMAX+1,J)
+ P(I2M,J)=P(I2M,J)+P(NMAX+2,J)
+ 330 CONTINUE
+ IF(MSTJ(54).GE.1) THEN
+ CALL PYBESQ(I1,I2,NMAX,Q2OLD,Q2NEW3)
+ DO 340 J=1,3
+ V(I1M,J)=V(I1M,J)+P(NMAX+1,J)*RSCALE
+ V(I2M,J)=V(I2M,J)+P(NMAX+2,J)*RSCALE
+ 340 CONTINUE
+ ELSEIF(MSTJ(54).LE.-1) THEN
+ EDEL=P(I1,4)+P(I2,4)-
+ & SQRT(MAX(Q2NEW-Q2OLD+(P(I1,4)+P(I2,4))**2,0.0D0))
+ A2=(P(I1,1)-P(I2,1))**2+(P(I1,2)-P(I2,2))**2+
+ & (P(I1,3)-P(I2,3))**2
+ WMAX=-1.0D20
+ MI3=0
+ MI4=0
+ S12=SDIP(I1,I2)
+ SM1=(P(I1,5)+SMMIN)**2
+ DO 360 I3M=NBE(0)+1,NBE(MIN(10,MSTJ(52)+1))
+ IF(I3M.EQ.I1M.OR.I3M.EQ.I2M) GOTO 360
+ IF(MSTJ(53).EQ.1.AND.K(I3M,5).NE.K(I1M,5)) GOTO 360
+ IF(MSTJ(53).EQ.-2.AND.K(I1M,5).EQ.K(I2M,5).AND.
+ & K(I3M,5).NE.K(I1M,5)) GOTO 360
+ I3=K(I3M,1)
+ IF(K(I3,2).EQ.K(I1,2)) GOTO 360
+ S13=SDIP(I1,I3)
+ S23=SDIP(I2,I3)
+ SM3=(P(I3,5)+SMMIN)**2
+ IF(MSTJ(54).EQ.-2) THEN
+ WI=(MIN(S12*SM3,S13*MIN(SM1,SM3),
+ & S23*MIN(SM1,SM3))*SM1)
+ ELSE
+ WI=((P(I1,4)+P(I2,4)+P(I3,4))**2-
+ & (P(I1,3)+P(I2,3)+P(I3,3))**2-
+ & (P(I1,2)+P(I2,2)+P(I3,2))**2-
+ & (P(I1,1)+P(I2,1)+P(I3,1))**2)
+ ENDIF
+ IF(MSTJ(57).EQ.1.AND.P(I3M,5).GT.0) THEN
+ IF (WMAX*WI.GE.(1.0D0-EXP(-P(I3M,5)/(PARJ(93)**2))))
+ & GOTO 360
+ ELSE
+ IF(WMAX*WI.GE.1.0) GOTO 360
+ ENDIF
+ DO 350 I4M=I3M+1,NBE(MIN(10,MSTJ(52)+1))
+ IF(I4M.EQ.I1M.OR.I4M.EQ.I2M) GOTO 350
+ IF(MSTJ(53).EQ.1.AND.K(I4M,5).NE.K(I1M,5)) GOTO 350
+ IF(MSTJ(53).EQ.-2.AND.K(I1M,5).EQ.K(I2M,5).AND.
+ & K(I4M,5).NE.K(I1M,5)) GOTO 350
+ I4=K(I4M,1)
+ IF(K(I3,2).EQ.K(I4,2).OR.K(I4,2).EQ.K(I1,2))
+ & GOTO 350
+ IF((P(I3,4)+P(I4,4)+EDEL)**2.LT.
+ & (P(I3,1)+P(I4,1))**2+(P(I3,2)+P(I4,2))**2+
+ & (P(I3,3)+P(I4,3))**2+(P(I3,5)+P(I4,5))**2)
+ & GOTO 350
+ IF(MSTJ(54).EQ.-2) THEN
+ S14=SDIP(I1,I4)
+ S24=SDIP(I2,I4)
+ S34=SDIP(I3,I4)
+ W=S12*MIN(MIN(S23,S24),MIN(S13,S14))*S34
+ W=MIN(W,S13*MIN(MIN(S23,S34),S12)*S24)
+ W=MIN(W,S14*MIN(MIN(S24,S34),S12)*S23)
+ W=MIN(W,MIN(S23,S24)*S13*S14)
+ W=1.0D0/W
+ ELSE
+C...weight=1-cos(theta)/mtot2
+ S1234=(P(I1,4)+P(I2,4)+P(I3,4)+P(I4,4))**2-
+ & (P(I1,3)+P(I2,3)+P(I3,3)+P(I4,3))**2-
+ & (P(I1,2)+P(I2,2)+P(I3,2)+P(I4,2))**2-
+ & (P(I1,1)+P(I2,1)+P(I3,1)+P(I4,1))**2
+ W=1.0D0/S1234
+ IF(W.LE.WMAX) GOTO 350
+ ENDIF
+ IF(MSTJ(57).EQ.1.AND.P(I3M,5).GT.0)
+ & W=W*(1.0D0-EXP(-P(I3M,5)/(PARJ(93)**2)))
+ IF(MSTJ(57).EQ.1.AND.P(I4M,5).GT.0)
+ & W=W*(1.0D0-EXP(-P(I4M,5)/(PARJ(93)**2)))
+ IF(W.LE.WMAX) GOTO 350
+ MI3=I3M
+ MI4=I4M
+ WMAX=W
+ 350 CONTINUE
+ 360 CONTINUE
+ IF(MI4.EQ.0) GOTO 380
+ I3=K(MI3,1)
+ I4=K(MI4,1)
+ EOLD=P(I3,4)+P(I4,4)
+ ENEW=EOLD+EDEL
+ P2=(P(I3,1)+P(I4,1))**2+(P(I3,2)+P(I4,2))**2+
+ & (P(I3,3)+P(I4,3))**2
+ Q2NEWP=MAX(0.0D0,ENEW**2-P2-(P(I3,5)+P(I4,5))**2)
+ Q2OLDP=MAX(0.0D0,EOLD**2-P2-(P(I3,5)+P(I4,5))**2)
+ CALL PYBESQ(I3,I4,NMAX,Q2OLDP,Q2NEWP)
+ DO 370 J=1,3
+ V(MI3,J)=V(MI3,J)+P(NMAX+1,J)
+ V(MI4,J)=V(MI4,J)+P(NMAX+2,J)
+ 370 CONTINUE
+ ENDIF
+ 380 CONTINUE
+ 390 CONTINUE
+ 400 CONTINUE
+
+C...Shift momenta and recalculate energies.
+ ESUMP=0.0D0
+ ESUM=0.0D0
+ PROD=0.0D0
+ DO 430 IM=NBE(0)+1,NBE(MIN(10,MSTJ(52)+1))
+ I=K(IM,1)
+ ESUMP=ESUMP+P(I,4)
+ DO 410 J=1,3
+ P(I,J)=P(I,J)+P(IM,J)
+ 410 CONTINUE
+ P(I,4)=SQRT(P(I,5)**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ ESUM=ESUM+P(I,4)
+ DO 420 J=1,3
+ PROD=PROD+V(IM,J)*P(I,J)/P(I,4)
+ 420 CONTINUE
+ 430 CONTINUE
+
+ PARJ(96)=0.0D0
+ IF(MSTJ(54).NE.0.AND.PROD.NE.0.0D0) THEN
+ 440 ALPHA=(ESUMP-ESUM)/PROD
+ PARJ(96)=PARJ(96)+ALPHA
+ PROD=0.0D0
+ ESUM=0.0D0
+ DO 470 IM=NBE(0)+1,NBE(MIN(10,MSTJ(52)+1))
+ I=K(IM,1)
+ DO 450 J=1,3
+ P(I,J)=P(I,J)+ALPHA*V(IM,J)
+ 450 CONTINUE
+ P(I,4)=SQRT(P(I,5)**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ ESUM=ESUM+P(I,4)
+ DO 460 J=1,3
+ PROD=PROD+V(IM,J)*P(I,J)/P(I,4)
+ 460 CONTINUE
+ 470 CONTINUE
+ IF(PROD.NE.0.0D0.AND.ABS(ESUMP-ESUM)/PECM.GT.0.00001D0)
+ & GOTO 440
+ ENDIF
+
+C...Rescale all momenta for energy conservation.
+ PES=0D0
+ PQS=0D0
+ DO 480 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 480
+ PES=PES+P(I,4)
+ PQS=PQS+P(I,5)**2/P(I,4)
+ 480 CONTINUE
+ PARJ(95)=PES-PECM
+ FAC=(PECM-PQS)/(PES-PQS)
+ DO 500 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 500
+ DO 490 J=1,3
+ P(I,J)=FAC*P(I,J)
+ 490 CONTINUE
+ P(I,4)=SQRT(P(I,5)**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ 500 CONTINUE
+
+C...Boost back to correct reference frame.
+ 510 CALL PYROBO(0,0,0D0,0D0,DPS(1)/DPS(4),DPS(2)/DPS(4),DPS(3)/DPS(4))
+ DO 520 I=1,N
+ IF(K(I,1).LT.0) K(I,1)=-K(I,1)
+ 520 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYBESQ
+C...Calculates the momentum shift in a system of two particles assuming
+C...the relative momentum squared should be shifted to Q2NEW. NI is the
+C...last position occupied in /PYJETS/.
+
+ SUBROUTINE PYBESQ(I1,I2,NI,Q2OLD,Q2NEW)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYJETS/,/PYDAT1/
+C...Local arrays and data.
+ DIMENSION DP(5)
+ SAVE HC1
+
+ IF(MSTJ(55).EQ.0) THEN
+ DQ2=Q2NEW-Q2OLD
+ DP2=(P(I1,1)-P(I2,1))**2+(P(I1,2)-P(I2,2))**2+
+ & (P(I1,3)-P(I2,3))**2
+ DP12=P(I1,1)**2+P(I1,2)**2+P(I1,3)**2
+ & -P(I2,1)**2-P(I2,2)**2-P(I2,3)**2
+ SE=P(I1,4)+P(I2,4)
+ DE=P(I1,4)-P(I2,4)
+ DQ2SE=DQ2+SE**2
+ DA=SE*DE*DP12-DP2*DQ2SE
+ DB=DP2*DQ2SE-DP12**2
+ HA=(DA+SQRT(MAX(DA**2+DQ2*(DQ2+SE**2-DE**2)*DB,0D0)))/(2D0*DB)
+ DO 100 J=1,3
+ PD=HA*(P(I1,J)-P(I2,J))
+ P(NI+1,J)=PD
+ P(NI+2,J)=-PD
+ 100 CONTINUE
+ RETURN
+ ENDIF
+
+ K(NI+1,1)=1
+ K(NI+2,1)=1
+ DO 110 J=1,5
+ P(NI+1,J)=P(I1,J)
+ P(NI+2,J)=P(I2,J)
+ DP(J)=P(I1,J)+P(I2,J)
+ 110 CONTINUE
+
+C...Boost to cms and rotate first particle to z-axis
+ CALL PYROBO(NI+1,NI+2,0.0D0,0.0D0,
+ &-DP(1)/DP(4),-DP(2)/DP(4),-DP(3)/DP(4))
+ PHI=PYANGL(P(NI+1,1),P(NI+1,2))
+ THE=PYANGL(P(NI+1,3),SQRT(P(NI+1,1)**2+P(NI+1,2)**2))
+ S=Q2NEW+(P(I1,5)+P(I2,5))**2
+ PZ=0.5D0*SQRT(Q2NEW*(S-(P(I1,5)-P(I2,5))**2)/S)
+ P(NI+1,1)=0.0D0
+ P(NI+1,2)=0.0D0
+ P(NI+1,3)=PZ
+ P(NI+1,4)=SQRT(PZ**2+P(I1,5)**2)
+ P(NI+2,1)=0.0D0
+ P(NI+2,2)=0.0D0
+ P(NI+2,3)=-PZ
+ P(NI+2,4)=SQRT(PZ**2+P(I2,5)**2)
+ DP(4)=SQRT(DP(1)**2+DP(2)**2+DP(3)**2+S)
+ CALL PYROBO(NI+1,NI+2,THE,PHI,
+ &DP(1)/DP(4),DP(2)/DP(4),DP(3)/DP(4))
+
+ DO 120 J=1,3
+ P(NI+1,J)=P(NI+1,J)-P(I1,J)
+ P(NI+2,J)=P(NI+2,J)-P(I2,J)
+ 120 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMASS
+C...Gives the mass of a particle/parton.
+
+ FUNCTION PYMASS(KF)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+C...Reset variables. Compressed code. Special case for popcorn diquarks.
+ PYMASS=0D0
+ KFA=IABS(KF)
+ KC=PYCOMP(KF)
+ IF(KC.EQ.0) THEN
+ MSTJ(93)=0
+ RETURN
+ ENDIF
+
+C...Guarantee use of constituent masses for internal checks.
+ IF((MSTJ(93).EQ.1.OR.MSTJ(93).EQ.2).AND.
+ &(KFA.LE.10.OR.MOD(KFA/10,10).EQ.0)) THEN
+ IF(KFA.LE.5) THEN
+ PYMASS=PARF(100+KFA)
+ IF(MSTJ(93).EQ.2) PYMASS=MAX(0D0,PYMASS-PARF(121))
+ ELSEIF(KFA.LE.10) THEN
+ PYMASS=PMAS(KFA,1)
+ ELSEIF(MSTJ(93).EQ.1) THEN
+ PYMASS=PARF(100+MOD(KFA/1000,10))+PARF(100+MOD(KFA/100,10))
+ ELSE
+ PYMASS=MAX(0D0,PMAS(KC,1)-PARF(122)-2D0*PARF(112)/3D0)
+ ENDIF
+
+C...Other masses can be read directly off table.
+ ELSE
+ PYMASS=PMAS(KC,1)
+ ENDIF
+
+C...Optional mass broadening according to truncated Breit-Wigner
+C...(either in m or in m^2).
+ IF(MSTJ(24).GE.1.AND.PMAS(KC,2).GT.1D-4) THEN
+ IF(MSTJ(24).EQ.1.OR.(MSTJ(24).EQ.2.AND.KFA.GT.100)) THEN
+ PYMASS=PYMASS+0.5D0*PMAS(KC,2)*TAN((2D0*PYR(0)-1D0)*
+ & ATAN(2D0*PMAS(KC,3)/PMAS(KC,2)))
+ ELSE
+ PM0=PYMASS
+ PMLOW=ATAN((MAX(0D0,PM0-PMAS(KC,3))**2-PM0**2)/
+ & (PM0*PMAS(KC,2)))
+ PMUPP=ATAN(((PM0+PMAS(KC,3))**2-PM0**2)/(PM0*PMAS(KC,2)))
+ PYMASS=SQRT(MAX(0D0,PM0**2+PM0*PMAS(KC,2)*TAN(PMLOW+
+ & (PMUPP-PMLOW)*PYR(0))))
+ ENDIF
+ ENDIF
+ MSTJ(93)=0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYMRUN
+C...Gives the running, current-algebra mass of a d, u, s, c or b quark,
+C...for Higgs couplings. Everything else sent on to PYMASS.
+
+ FUNCTION PYMRUN(KF,Q2)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ SAVE /PYDAT1/,/PYDAT2/,/PYPARS/
+
+C...Most masses not handled here.
+ KFA=IABS(KF)
+ IF(KFA.EQ.0.OR.KFA.GT.6) THEN
+ PYMRUN=PYMASS(KF)
+
+C...Current-algebra masses, but no Q2 dependence.
+ ELSEIF(MSTP(37).NE.1.OR.MSTP(2).LE.0) THEN
+ PYMRUN=PARF(90+KFA)
+
+C...Running current-algebra masses.
+ ELSE
+ AS=PYALPS(Q2)
+ PYMRUN=PARF(90+KFA)*
+ & (LOG(MAX(4D0,PARP(37)**2*PARF(90+KFA)**2/PARU(117)**2))/
+ & LOG(MAX(4D0,Q2/PARU(117)**2)))**(12D0/(33D0-2D0*MSTU(118)))
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYNAME
+C...Gives the particle/parton name as a character string.
+
+ SUBROUTINE PYNAME(KF,CHAU)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT4/
+C...Local character variable.
+ CHARACTER CHAU*16
+
+C...Read out code with distinction particle/antiparticle.
+ CHAU=' '
+ KC=PYCOMP(KF)
+ IF(KC.NE.0) CHAU=CHAF(KC,(3-ISIGN(1,KF))/2)
+
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCHGE
+C...Gives three times the charge for a particle/parton.
+
+ FUNCTION PYCHGE(KF)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT2/
+
+C...Read out charge and change sign for antiparticle.
+ PYCHGE=0
+ KC=PYCOMP(KF)
+ IF(KC.NE.0) PYCHGE=KCHG(KC,1)*ISIGN(1,KF)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCOMP
+C...Compress the standard KF codes for use in mass and decay arrays;
+C...also checks whether a given code actually is defined.
+
+ FUNCTION PYCOMP(KF)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+C...Local arrays and saved data.
+ DIMENSION KFORD(100:500),KCORD(101:500)
+ SAVE KFORD,KCORD,NFORD,KFLAST,KCLAST
+
+C...Whenever necessary reorder codes for faster search.
+ IF(MSTU(20).EQ.0) THEN
+ NFORD=100
+ KFORD(100)=0
+ DO 120 I=101,500
+ KFA=KCHG(I,4)
+ IF(KFA.LE.100) GOTO 120
+ NFORD=NFORD+1
+ DO 100 I1=NFORD-1,0,-1
+ IF(KFA.GE.KFORD(I1)) GOTO 110
+ KFORD(I1+1)=KFORD(I1)
+ KCORD(I1+1)=KCORD(I1)
+ 100 CONTINUE
+ 110 KFORD(I1+1)=KFA
+ KCORD(I1+1)=I
+ 120 CONTINUE
+ MSTU(20)=1
+ KFLAST=0
+ KCLAST=0
+ ENDIF
+
+C...Fast action if same code as in latest call.
+ IF(KF.EQ.KFLAST) THEN
+ PYCOMP=KCLAST
+ RETURN
+ ENDIF
+
+C...Starting values. Remove internal diquark flags.
+ PYCOMP=0
+ KFA=IABS(KF)
+ IF(MOD(KFA/10,10).EQ.0.AND.KFA.LT.100000
+ & .AND.MOD(KFA/1000,10).GT.0) KFA=MOD(KFA,10000)
+
+C...Simple cases: direct translation.
+ IF(KFA.GT.KFORD(NFORD)) THEN
+ ELSEIF(KFA.LE.100) THEN
+ PYCOMP=KFA
+
+C...Else binary search.
+ ELSE
+ IMIN=100
+ IMAX=NFORD+1
+ 130 IAVG=(IMIN+IMAX)/2
+ IF(KFORD(IAVG).GT.KFA) THEN
+ IMAX=IAVG
+ IF(IMAX.GT.IMIN+1) GOTO 130
+ ELSEIF(KFORD(IAVG).LT.KFA) THEN
+ IMIN=IAVG
+ IF(IMAX.GT.IMIN+1) GOTO 130
+ ELSE
+ PYCOMP=KCORD(IAVG)
+ ENDIF
+ ENDIF
+
+C...Check if antiparticle allowed.
+ IF(PYCOMP.NE.0.AND.KF.LT.0) THEN
+ IF(KCHG(PYCOMP,3).EQ.0) PYCOMP=0
+ ENDIF
+
+C...Save codes for possible future fast action.
+ KFLAST=KF
+ KCLAST=PYCOMP
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYERRM
+C...Informs user of errors in program execution.
+
+ SUBROUTINE PYERRM(MERR,CHMESS)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYJETS/,/PYDAT1/
+C...Local character variable.
+ CHARACTER CHMESS*(*)
+
+C...Write first few warnings, then be silent.
+ IF(MERR.LE.10) THEN
+ MSTU(27)=MSTU(27)+1
+ MSTU(28)=MERR
+ IF(MSTU(25).EQ.1.AND.MSTU(27).LE.MSTU(26)) WRITE(MSTU(11),5000)
+ & MERR,MSTU(31),CHMESS
+
+C...Write first few errors, then be silent or stop program.
+ ELSEIF(MERR.LE.20) THEN
+ IF(MSTU(29).EQ.0) MSTU(23)=MSTU(23)+1
+ MSTU(30)=MSTU(30)+1
+ MSTU(24)=MERR-10
+ IF(MSTU(21).GE.1.AND.MSTU(23).LE.MSTU(22)) WRITE(MSTU(11),5100)
+ & MERR-10,MSTU(31),CHMESS
+ IF(MSTU(21).GE.2.AND.MSTU(23).GT.MSTU(22)) THEN
+ WRITE(MSTU(11),5100) MERR-10,MSTU(31),CHMESS
+ WRITE(MSTU(11),5200)
+ IF(MERR.NE.17) CALL PYLIST(2)
+ CALL PYSTOP(3)
+ ENDIF
+
+C...Stop program in case of irreparable error.
+ ELSE
+ WRITE(MSTU(11),5300) MERR-20,MSTU(31),CHMESS
+ CALL PYSTOP(3)
+ ENDIF
+
+C...Formats for output.
+ 5000 FORMAT(/5X,'Advisory warning type',I2,' given after',I9,
+ &' PYEXEC calls:'/5X,A)
+ 5100 FORMAT(/5X,'Error type',I2,' has occured after',I9,
+ &' PYEXEC calls:'/5X,A)
+ 5200 FORMAT(5X,'Execution will be stopped after listing of last ',
+ &'event!')
+ 5300 FORMAT(/5X,'Fatal error type',I2,' has occured after',I9,
+ &' PYEXEC calls:'/5X,A/5X,'Execution will now be stopped!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYALEM
+C...Calculates the running alpha_electromagnetic.
+
+ FUNCTION PYALEM(Q2)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Calculate real part of photon vacuum polarization.
+C...For leptons simplify by using asymptotic (Q^2 >> m^2) expressions.
+C...For hadrons use parametrization of H. Burkhardt et al.
+C...See R. Kleiss et al, CERN 89-08, vol. 3, pp. 129-131.
+ AEMPI=PARU(101)/(3D0*PARU(1))
+ IF(MSTU(101).LE.0.OR.Q2.LT.2D-6) THEN
+ RPIGG=0D0
+ ELSEIF(MSTU(101).EQ.2.AND.Q2.LT.PARU(104)) THEN
+ RPIGG=0D0
+ ELSEIF(MSTU(101).EQ.2) THEN
+ RPIGG=1D0-PARU(101)/PARU(103)
+ ELSEIF(Q2.LT.0.09D0) THEN
+ RPIGG=AEMPI*(13.4916D0+LOG(Q2))+0.00835D0*LOG(1D0+Q2)
+ ELSEIF(Q2.LT.9D0) THEN
+ RPIGG=AEMPI*(16.3200D0+2D0*LOG(Q2))+
+ & 0.00238D0*LOG(1D0+3.927D0*Q2)
+ ELSEIF(Q2.LT.1D4) THEN
+ RPIGG=AEMPI*(13.4955D0+3D0*LOG(Q2))+0.00165D0+
+ & 0.00299D0*LOG(1D0+Q2)
+ ELSE
+ RPIGG=AEMPI*(13.4955D0+3D0*LOG(Q2))+0.00221D0+
+ & 0.00293D0*LOG(1D0+Q2)
+ ENDIF
+
+C...Calculate running alpha_em.
+ PYALEM=PARU(101)/(1D0-RPIGG)
+ PARU(108)=PYALEM
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYALPS
+C...Gives the value of alpha_strong.
+
+ FUNCTION PYALPS(Q2)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+C...Coefficients for second-order threshold matching.
+C...From W.J. Marciano, Phys. Rev. D29 (1984) 580.
+ DIMENSION STEPDN(6),STEPUP(6)
+c DATA STEPDN/0D0,0D0,(2D0*107D0/2025D0),(2D0*963D0/14375D0),
+c &(2D0*321D0/3703D0),0D0/
+c DATA STEPUP/0D0,0D0,0D0,(-2D0*107D0/1875D0),
+c &(-2D0*963D0/13225D0),(-2D0*321D0/3381D0)/
+ DATA STEPDN/0D0,0D0,0.10568D0,0.13398D0,0.17337D0,0D0/
+ DATA STEPUP/0D0,0D0,0D0,-0.11413D0,-0.14563D0,-0.18988D0/
+
+C...Constant alpha_strong trivial. Pick artificial Lambda.
+ IF(MSTU(111).LE.0) THEN
+ PYALPS=PARU(111)
+ MSTU(118)=MSTU(112)
+ PARU(117)=0.2D0
+ IF(Q2.GT.0.04D0) PARU(117)=SQRT(Q2)*EXP(-6D0*PARU(1)/
+ & ((33D0-2D0*MSTU(112))*PARU(111)))
+ PARU(118)=PARU(111)
+ RETURN
+ ENDIF
+
+C...Find effective Q2, number of flavours and Lambda.
+ Q2EFF=Q2
+ IF(MSTU(115).GE.2) Q2EFF=MAX(Q2,PARU(114))
+ NF=MSTU(112)
+ ALAM2=PARU(112)**2
+ 100 IF(NF.GT.MAX(3,MSTU(113))) THEN
+ Q2THR=PARU(113)*PMAS(NF,1)**2
+ IF(Q2EFF.LT.Q2THR) THEN
+ NF=NF-1
+ Q2RAT=Q2THR/ALAM2
+ ALAM2=ALAM2*Q2RAT**(2D0/(33D0-2D0*NF))
+ IF(MSTU(111).EQ.2) ALAM2=ALAM2*LOG(Q2RAT)**STEPDN(NF)
+ GOTO 100
+ ENDIF
+ ENDIF
+ 110 IF(NF.LT.MIN(6,MSTU(114))) THEN
+ Q2THR=PARU(113)*PMAS(NF+1,1)**2
+ IF(Q2EFF.GT.Q2THR) THEN
+ NF=NF+1
+ Q2RAT=Q2THR/ALAM2
+ ALAM2=ALAM2*Q2RAT**(-2D0/(33D0-2D0*NF))
+ IF(MSTU(111).EQ.2) ALAM2=ALAM2*LOG(Q2RAT)**STEPUP(NF)
+ GOTO 110
+ ENDIF
+ ENDIF
+ IF(MSTU(115).EQ.1) Q2EFF=Q2EFF+ALAM2
+ PARU(117)=SQRT(ALAM2)
+
+C...Evaluate first or second order alpha_strong.
+ B0=(33D0-2D0*NF)/6D0
+ ALGQ=LOG(MAX(1.0001D0,Q2EFF/ALAM2))
+ IF(MSTU(111).EQ.1) THEN
+ PYALPS=MIN(PARU(115),PARU(2)/(B0*ALGQ))
+ ELSE
+ B1=(153D0-19D0*NF)/6D0
+ PYALPS=MIN(PARU(115),PARU(2)/(B0*ALGQ)*(1D0-B1*LOG(ALGQ)/
+ & (B0**2*ALGQ)))
+ ENDIF
+ MSTU(118)=NF
+ PARU(118)=PYALPS
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYANGL
+C...Reconstructs an angle from given x and y coordinates.
+
+ FUNCTION PYANGL(X,Y)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+ PYANGL=0D0
+ R=SQRT(X**2+Y**2)
+ IF(R.LT.1D-20) RETURN
+ IF(ABS(X)/R.LT.0.8D0) THEN
+ PYANGL=SIGN(ACOS(X/R),Y)
+ ELSE
+ PYANGL=ASIN(Y/R)
+ IF(X.LT.0D0.AND.PYANGL.GE.0D0) THEN
+ PYANGL=PARU(1)-PYANGL
+ ELSEIF(X.LT.0D0) THEN
+ PYANGL=-PARU(1)-PYANGL
+ ENDIF
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYROBO
+C...Performs rotations and boosts.
+
+ SUBROUTINE PYROBO(IMI,IMA,THE,PHI,BEX,BEY,BEZ)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYJETS/,/PYDAT1/
+C...Local arrays.
+ DIMENSION ROT(3,3),PR(3),VR(3),DP(4),DV(4)
+
+C...Find and check range of rotation/boost.
+ IMIN=IMI
+ IF(IMIN.LE.0) IMIN=1
+ IF(MSTU(1).GT.0) IMIN=MSTU(1)
+ IMAX=IMA
+ IF(IMAX.LE.0) IMAX=N
+ IF(MSTU(2).GT.0) IMAX=MSTU(2)
+ IF(IMIN.GT.MSTU(4).OR.IMAX.GT.MSTU(4)) THEN
+ CALL PYERRM(11,'(PYROBO:) range outside PYJETS memory')
+ RETURN
+ ENDIF
+
+C...Optional resetting of V (when not set before.)
+ IF(MSTU(33).NE.0) THEN
+ DO 110 I=MIN(IMIN,MSTU(4)),MIN(IMAX,MSTU(4))
+ DO 100 J=1,5
+ V(I,J)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+ MSTU(33)=0
+ ENDIF
+
+C...Rotate, typically from z axis to direction (theta,phi).
+ IF(THE**2+PHI**2.GT.1D-20) THEN
+ ROT(1,1)=COS(THE)*COS(PHI)
+ ROT(1,2)=-SIN(PHI)
+ ROT(1,3)=SIN(THE)*COS(PHI)
+ ROT(2,1)=COS(THE)*SIN(PHI)
+ ROT(2,2)=COS(PHI)
+ ROT(2,3)=SIN(THE)*SIN(PHI)
+ ROT(3,1)=-SIN(THE)
+ ROT(3,2)=0D0
+ ROT(3,3)=COS(THE)
+ DO 140 I=IMIN,IMAX
+ IF(K(I,1).LE.0) GOTO 140
+ DO 120 J=1,3
+ PR(J)=P(I,J)
+ VR(J)=V(I,J)
+ 120 CONTINUE
+ DO 130 J=1,3
+ P(I,J)=ROT(J,1)*PR(1)+ROT(J,2)*PR(2)+ROT(J,3)*PR(3)
+ V(I,J)=ROT(J,1)*VR(1)+ROT(J,2)*VR(2)+ROT(J,3)*VR(3)
+ 130 CONTINUE
+ 140 CONTINUE
+ ENDIF
+
+C...Boost, typically from rest to momentum/energy=beta.
+ IF(BEX**2+BEY**2+BEZ**2.GT.1D-20) THEN
+ DBX=BEX
+ DBY=BEY
+ DBZ=BEZ
+ DB=SQRT(DBX**2+DBY**2+DBZ**2)
+ EPS1=1D0-1D-12
+ IF(DB.GT.EPS1) THEN
+C...Rescale boost vector if too close to unity.
+ CALL PYERRM(3,'(PYROBO:) boost vector too large')
+ DBX=DBX*(EPS1/DB)
+ DBY=DBY*(EPS1/DB)
+ DBZ=DBZ*(EPS1/DB)
+ DB=EPS1
+ ENDIF
+ DGA=1D0/SQRT(1D0-DB**2)
+ DO 160 I=IMIN,IMAX
+ IF(K(I,1).LE.0) GOTO 160
+ DO 150 J=1,4
+ DP(J)=P(I,J)
+ DV(J)=V(I,J)
+ 150 CONTINUE
+ DBP=DBX*DP(1)+DBY*DP(2)+DBZ*DP(3)
+ DGABP=DGA*(DGA*DBP/(1D0+DGA)+DP(4))
+ P(I,1)=DP(1)+DGABP*DBX
+ P(I,2)=DP(2)+DGABP*DBY
+ P(I,3)=DP(3)+DGABP*DBZ
+ P(I,4)=DGA*(DP(4)+DBP)
+ DBV=DBX*DV(1)+DBY*DV(2)+DBZ*DV(3)
+ DGABV=DGA*(DGA*DBV/(1D0+DGA)+DV(4))
+ V(I,1)=DV(1)+DGABV*DBX
+ V(I,2)=DV(2)+DGABV*DBY
+ V(I,3)=DV(3)+DGABV*DBZ
+ V(I,4)=DGA*(DV(4)+DBV)
+ 160 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYEDIT
+C...Performs global manipulations on the event record, in particular
+C...to exclude unstable or undetectable partons/particles.
+
+ SUBROUTINE PYEDIT(MEDIT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYCTAG/
+C...Local arrays.
+ DIMENSION NS(2),PTS(2),PLS(2)
+
+C...Remove unwanted partons/particles.
+ IF((MEDIT.GE.0.AND.MEDIT.LE.3).OR.MEDIT.EQ.5) THEN
+ IMAX=N
+ IF(MSTU(2).GT.0) IMAX=MSTU(2)
+ I1=MAX(1,MSTU(1))-1
+ DO 110 I=MAX(1,MSTU(1)),IMAX
+ IF(K(I,1).EQ.0.OR.(K(I,1).GE.21.AND.K(I,1).LE.40)) GOTO 110
+ IF(MEDIT.EQ.1) THEN
+ IF(K(I,1).GT.10.AND.K(I,1).NE.41.AND.K(I,1).NE.42) GOTO 110
+ ELSEIF(MEDIT.EQ.2) THEN
+ IF(K(I,1).GT.10.AND.K(I,1).NE.41.AND.K(I,1).NE.42) GOTO 110
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 110
+ ELSEIF(MEDIT.EQ.3) THEN
+ IF(K(I,1).GT.10.AND.K(I,1).NE.41.AND.K(I,1).NE.42) GOTO 110
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 110
+ IF(KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2)).EQ.0) GOTO 110
+ ELSEIF(MEDIT.EQ.5) THEN
+ IF(K(I,1).EQ.13.OR.K(I,1).EQ.14.OR.K(I,1).EQ.52) GOTO 110
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0) GOTO 110
+ IF(K(I,1).GT.10.AND.K(I,1).NE.41.AND.K(I,1).NE.42.AND.
+ & KCHG(KC,2).EQ.0) GOTO 110
+ ENDIF
+
+C...Pack remaining partons/particles. Origin no longer known.
+ I1=I1+1
+ DO 100 J=1,5
+ K(I1,J)=K(I,J)
+ P(I1,J)=P(I,J)
+ V(I1,J)=V(I,J)
+ 100 CONTINUE
+ K(I1,3)=0
+ 110 CONTINUE
+ IF(I1.LT.N) MSTU(3)=0
+ IF(I1.LT.N) MSTU(70)=0
+ N=I1
+
+C...Selective removal of class of entries. New position of retained.
+ ELSEIF(MEDIT.GE.11.AND.MEDIT.LE.15) THEN
+ I1=0
+ DO 120 I=1,N
+ K(I,3)=MOD(K(I,3),MSTU(5))
+ IF(MEDIT.EQ.11.AND.K(I,1).LT.0) GOTO 120
+ IF(MEDIT.EQ.12.AND.K(I,1).EQ.0) GOTO 120
+ IF(MEDIT.EQ.13.AND.(K(I,1).EQ.11.OR.K(I,1).EQ.12.OR.
+ & K(I,1).EQ.15.OR.K(I,1).EQ.51).AND.K(I,2).NE.94) GOTO 120
+ IF(MEDIT.EQ.14.AND.(K(I,1).EQ.13.OR.K(I,1).EQ.14.OR.
+ & K(I,1).EQ.52.OR.K(I,2).EQ.94)) GOTO 120
+ IF(MEDIT.EQ.15.AND.K(I,1).GE.21.AND.K(I,1).LE.40) GOTO 120
+ I1=I1+1
+ K(I,3)=K(I,3)+MSTU(5)*I1
+ 120 CONTINUE
+
+C...Find new event history information and replace old.
+ DO 140 I=1,N
+ IF(K(I,1).LE.0.OR.(K(I,1).GE.21.AND.K(I,1).LE.40).OR.
+ & K(I,3)/MSTU(5).EQ.0) GOTO 140
+ ID=I
+ 130 IM=MOD(K(ID,3),MSTU(5))
+ IF(MEDIT.EQ.13.AND.IM.GT.0.AND.IM.LE.N) THEN
+ IF((K(IM,1).EQ.11.OR.K(IM,1).EQ.12.OR.K(IM,1).EQ.15.OR.
+ & K(IM,1).EQ.51).AND.K(IM,2).NE.94) THEN
+ ID=IM
+ GOTO 130
+ ENDIF
+ ELSEIF(MEDIT.EQ.14.AND.IM.GT.0.AND.IM.LE.N) THEN
+ IF(K(IM,1).EQ.13.OR.K(IM,1).EQ.14.OR.K(IM,1).EQ.52.OR.
+ & K(IM,2).EQ.94) THEN
+ ID=IM
+ GOTO 130
+ ENDIF
+ ENDIF
+ K(I,3)=MSTU(5)*(K(I,3)/MSTU(5))
+ IF(IM.NE.0) K(I,3)=K(I,3)+K(IM,3)/MSTU(5)
+ IF(K(I,1).NE.3.AND.K(I,1).NE.13.AND.K(I,1).NE.14.AND.
+ & K(I,1).NE.42.AND.K(I,1).NE.52) THEN
+ IF(K(I,4).GT.0.AND.K(I,4).LE.MSTU(4)) K(I,4)=
+ & K(K(I,4),3)/MSTU(5)
+ IF(K(I,5).GT.0.AND.K(I,5).LE.MSTU(4)) K(I,5)=
+ & K(K(I,5),3)/MSTU(5)
+ ELSE
+ KCM=MOD(K(I,4)/MSTU(5),MSTU(5))
+ IF(KCM.GT.0.AND.KCM.LE.MSTU(4).AND.K(I,1).NE.42.AND.
+ & K(I,1).NE.52) KCM=K(KCM,3)/MSTU(5)
+ KCD=MOD(K(I,4),MSTU(5))
+ IF(KCD.GT.0.AND.KCD.LE.MSTU(4)) KCD=K(KCD,3)/MSTU(5)
+ K(I,4)=MSTU(5)**2*(K(I,4)/MSTU(5)**2)+MSTU(5)*KCM+KCD
+ KCM=MOD(K(I,5)/MSTU(5),MSTU(5))
+ IF(KCM.GT.0.AND.KCM.LE.MSTU(4)) KCM=K(KCM,3)/MSTU(5)
+ KCD=MOD(K(I,5),MSTU(5))
+ IF(KCD.GT.0.AND.KCD.LE.MSTU(4)) KCD=K(KCD,3)/MSTU(5)
+ K(I,5)=MSTU(5)**2*(K(I,5)/MSTU(5)**2)+MSTU(5)*KCM+KCD
+ ENDIF
+ 140 CONTINUE
+
+C...Pack remaining entries.
+ I1=0
+ MSTU90=MSTU(90)
+ MSTU(90)=0
+ DO 170 I=1,N
+ IF(K(I,3)/MSTU(5).EQ.0) GOTO 170
+ I1=I1+1
+ DO 150 J=1,5
+ K(I1,J)=K(I,J)
+ P(I1,J)=P(I,J)
+ V(I1,J)=V(I,J)
+ 150 CONTINUE
+C...Also update LHA1 colour tags
+ MCT(I1,1)=MCT(I,1)
+ MCT(I1,2)=MCT(I,2)
+ K(I1,3)=MOD(K(I1,3),MSTU(5))
+ DO 160 IZ=1,MSTU90
+ IF(I.EQ.MSTU(90+IZ)) THEN
+ MSTU(90)=MSTU(90)+1
+ MSTU(90+MSTU(90))=I1
+ PARU(90+MSTU(90))=PARU(90+IZ)
+ ENDIF
+ 160 CONTINUE
+ 170 CONTINUE
+ IF(I1.LT.N) MSTU(3)=0
+ IF(I1.LT.N) MSTU(70)=0
+ N=I1
+
+C...Fill in some missing daughter pointers (lost in colour flow).
+ ELSEIF(MEDIT.EQ.16) THEN
+ DO 220 I=1,N
+ IF(K(I,1).LE.10.OR.(K(I,1).GE.21.AND.K(I,1).LE.50)) GOTO 220
+ IF(K(I,4).NE.0.OR.K(I,5).NE.0) GOTO 220
+C...Find daughters who point to mother.
+ DO 180 I1=I+1,N
+ IF(K(I1,3).NE.I) THEN
+ ELSEIF(K(I,4).EQ.0) THEN
+ K(I,4)=I1
+ ELSE
+ K(I,5)=I1
+ ENDIF
+ 180 CONTINUE
+ IF(K(I,5).EQ.0) K(I,5)=K(I,4)
+ IF(K(I,4).NE.0) GOTO 220
+C...Find daughters who point to documentation version of mother.
+ IM=K(I,3)
+ IF(IM.LE.0.OR.IM.GE.I) GOTO 220
+ IF(K(IM,1).LE.20.OR.K(IM,1).GT.30) GOTO 220
+ IF(K(IM,2).NE.K(I,2).OR.ABS(P(IM,5)-P(I,5)).GT.1D-2) GOTO 220
+ DO 190 I1=I+1,N
+ IF(K(I1,3).NE.IM) THEN
+ ELSEIF(K(I,4).EQ.0) THEN
+ K(I,4)=I1
+ ELSE
+ K(I,5)=I1
+ ENDIF
+ 190 CONTINUE
+ IF(K(I,5).EQ.0) K(I,5)=K(I,4)
+ IF(K(I,4).NE.0) GOTO 220
+C...Find daughters who point to documentation daughters who,
+C...in their turn, point to documentation mother.
+ ID1=IM
+ ID2=IM
+ DO 200 I1=IM+1,I-1
+ IF(K(I1,3).EQ.IM.AND.K(I1,1).GE.21.AND.K(I1,1).LE.30) THEN
+ ID2=I1
+ IF(ID1.EQ.IM) ID1=I1
+ ENDIF
+ 200 CONTINUE
+ DO 210 I1=I+1,N
+ IF(K(I1,3).NE.ID1.AND.K(I1,3).NE.ID2) THEN
+ ELSEIF(K(I,4).EQ.0) THEN
+ K(I,4)=I1
+ ELSE
+ K(I,5)=I1
+ ENDIF
+ 210 CONTINUE
+ IF(K(I,5).EQ.0) K(I,5)=K(I,4)
+ 220 CONTINUE
+
+C...Save top entries at bottom of PYJETS commonblock.
+ ELSEIF(MEDIT.EQ.21) THEN
+ IF(2*N.GE.MSTU(4)) THEN
+ CALL PYERRM(11,'(PYEDIT:) no more memory left in PYJETS')
+ RETURN
+ ENDIF
+ DO 240 I=1,N
+ DO 230 J=1,5
+ K(MSTU(4)-I,J)=K(I,J)
+ P(MSTU(4)-I,J)=P(I,J)
+ V(MSTU(4)-I,J)=V(I,J)
+ 230 CONTINUE
+ 240 CONTINUE
+ MSTU(32)=N
+
+C...Restore bottom entries of commonblock PYJETS to top.
+ ELSEIF(MEDIT.EQ.22) THEN
+ DO 260 I=1,MSTU(32)
+ DO 250 J=1,5
+ K(I,J)=K(MSTU(4)-I,J)
+ P(I,J)=P(MSTU(4)-I,J)
+ V(I,J)=V(MSTU(4)-I,J)
+ 250 CONTINUE
+ 260 CONTINUE
+ N=MSTU(32)
+
+C...Mark primary entries at top of commonblock PYJETS as untreated.
+ ELSEIF(MEDIT.EQ.23) THEN
+ I1=0
+ DO 270 I=1,N
+ KH=K(I,3)
+ IF(KH.GE.1) THEN
+ IF(K(KH,1).GE.21.AND.K(KH,1).LE.30) KH=0
+ ENDIF
+ IF(KH.NE.0) GOTO 280
+ I1=I1+1
+ IF(K(I,1).GE.11.AND.K(I,1).LE.20) K(I,1)=K(I,1)-10
+ IF(K(I,1).GE.51.AND.K(I,1).LE.60) K(I,1)=K(I,1)-10
+ 270 CONTINUE
+ 280 N=I1
+
+C...Place largest axis along z axis and second largest in xy plane.
+ ELSEIF(MEDIT.EQ.31.OR.MEDIT.EQ.32) THEN
+ CALL PYROBO(1,N+MSTU(3),0D0,-PYANGL(P(MSTU(61),1),
+ & P(MSTU(61),2)),0D0,0D0,0D0)
+ CALL PYROBO(1,N+MSTU(3),-PYANGL(P(MSTU(61),3),
+ & P(MSTU(61),1)),0D0,0D0,0D0,0D0)
+ CALL PYROBO(1,N+MSTU(3),0D0,-PYANGL(P(MSTU(61)+1,1),
+ & P(MSTU(61)+1,2)),0D0,0D0,0D0)
+ IF(MEDIT.EQ.31) RETURN
+
+C...Rotate to put slim jet along +z axis.
+ DO 290 IS=1,2
+ NS(IS)=0
+ PTS(IS)=0D0
+ PLS(IS)=0D0
+ 290 CONTINUE
+ DO 300 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 300
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 300
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2))
+ & .EQ.0) GOTO 300
+ ENDIF
+ IS=2D0-SIGN(0.5D0,P(I,3))
+ NS(IS)=NS(IS)+1
+ PTS(IS)=PTS(IS)+SQRT(P(I,1)**2+P(I,2)**2)
+ 300 CONTINUE
+ IF(NS(1)*PTS(2)**2.LT.NS(2)*PTS(1)**2)
+ & CALL PYROBO(1,N+MSTU(3),PARU(1),0D0,0D0,0D0,0D0)
+
+C...Rotate to put second largest jet into -z,+x quadrant.
+ DO 310 I=1,N
+ IF(P(I,3).GE.0D0) GOTO 310
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 310
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 310
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2))
+ & .EQ.0) GOTO 310
+ ENDIF
+ IS=2D0-SIGN(0.5D0,P(I,1))
+ PLS(IS)=PLS(IS)-P(I,3)
+ 310 CONTINUE
+ IF(PLS(2).GT.PLS(1)) CALL PYROBO(1,N+MSTU(3),0D0,PARU(1),
+ & 0D0,0D0,0D0)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYLIST
+C...Gives program heading, or lists an event, or particle
+C...data, or current parameter values.
+
+ SUBROUTINE PYLIST(MLIST)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+
+C...HEPEVT commonblock.
+ PARAMETER (NMXHEP=4000)
+ COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHEP),IDHEP(NMXHEP),
+ &JMOHEP(2,NMXHEP),JDAHEP(2,NMXHEP),PHEP(5,NMXHEP),VHEP(4,NMXHEP)
+ DOUBLE PRECISION PHEP,VHEP
+ SAVE /HEPEVT/
+
+C...User process event common block.
+ INTEGER MAXNUP
+ PARAMETER (MAXNUP=500)
+ INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+ DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+ COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+ &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+ &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+ SAVE /HEPEUP/
+
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYCTAG/NCT,MCT(4000,2)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/,/PYCTAG/
+C...Local arrays, character variables and data.
+ CHARACTER CHAP*16,CHAC*16,CHAN*16,CHAD(5)*16,CHDL(7)*4
+ DIMENSION PS(6)
+ DATA CHDL/'(())',' ','()','!!','<>','==','(==)'/
+
+C...Initialization printout: version number and date of last change.
+ IF(MLIST.EQ.0.OR.MSTU(12).EQ.1) THEN
+ CALL PYLOGO
+ MSTU(12)=12345
+ IF(MLIST.EQ.0) RETURN
+ ENDIF
+
+C...List event data, including additional lines after N.
+ IF(MLIST.GE.1.AND.MLIST.LE.4) THEN
+ IF(MLIST.EQ.1) WRITE(MSTU(11),5100)
+ IF(MLIST.EQ.2) WRITE(MSTU(11),5200)
+ IF(MLIST.EQ.3) WRITE(MSTU(11),5300)
+ IF(MLIST.EQ.4) WRITE(MSTU(11),5400)
+ LMX=12
+ IF(MLIST.GE.2) LMX=16
+ ISTR=0
+ IMAX=N
+ IF(MSTU(2).GT.0) IMAX=MSTU(2)
+ DO 120 I=MAX(1,MSTU(1)),MAX(IMAX,N+MAX(0,MSTU(3)))
+ IF(I.GT.IMAX.AND.I.LE.N) GOTO 120
+ IF(MSTU(15).EQ.0.AND.K(I,1).LE.0) GOTO 120
+ IF(MSTU(15).EQ.1.AND.K(I,1).LT.0) GOTO 120
+
+C...Get particle name, pad it and check it is not too long.
+ CALL PYNAME(K(I,2),CHAP)
+ LEN=0
+ DO 100 LEM=1,16
+ IF(CHAP(LEM:LEM).NE.' ') LEN=LEM
+ 100 CONTINUE
+ MDL=(K(I,1)+19)/10
+ LDL=0
+ IF(MDL.EQ.2.OR.MDL.GE.8) THEN
+ CHAC=CHAP
+ IF(LEN.GT.LMX) CHAC(LMX:LMX)='?'
+ ELSE
+ LDL=1
+ IF(MDL.EQ.1.OR.MDL.EQ.7) LDL=2
+ IF(LEN.EQ.0) THEN
+ CHAC=CHDL(MDL)(1:2*LDL)//' '
+ ELSE
+ CHAC=CHDL(MDL)(1:LDL)//CHAP(1:MIN(LEN,LMX-2*LDL))//
+ & CHDL(MDL)(LDL+1:2*LDL)//' '
+ IF(LEN+2*LDL.GT.LMX) CHAC(LMX:LMX)='?'
+ ENDIF
+ ENDIF
+
+C...Add information on string connection.
+ IF(K(I,1).EQ.1.OR.K(I,1).EQ.2.OR.K(I,1).EQ.11.OR.K(I,1).EQ.12)
+ & THEN
+ KC=PYCOMP(K(I,2))
+ KCC=0
+ IF(KC.NE.0) KCC=KCHG(KC,2)
+ IF(IABS(K(I,2)).EQ.39) THEN
+ IF(LEN+2*LDL+3.LE.LMX) CHAC(LMX-1:LMX-1)='X'
+ ELSEIF(KCC.NE.0.AND.ISTR.EQ.0) THEN
+ ISTR=1
+ IF(LEN+2*LDL+3.LE.LMX) CHAC(LMX-1:LMX-1)='A'
+ ELSEIF(KCC.NE.0.AND.(K(I,1).EQ.2.OR.K(I,1).EQ.12)) THEN
+ IF(LEN+2*LDL+3.LE.LMX) CHAC(LMX-1:LMX-1)='I'
+ ELSEIF(KCC.NE.0) THEN
+ ISTR=0
+ IF(LEN+2*LDL+3.LE.LMX) CHAC(LMX-1:LMX-1)='V'
+ ENDIF
+ ENDIF
+ IF((K(I,1).EQ.41.OR.K(I,1).EQ.51).AND.LEN+2*LDL+3.LE.LMX)
+ & CHAC(LMX-1:LMX-1)='I'
+
+C...Write data for particle/jet.
+ IF(MLIST.EQ.1.AND.ABS(P(I,4)).LT.9999D0) THEN
+ WRITE(MSTU(11),5500) I,CHAC(1:12),(K(I,J1),J1=1,3),
+ & (P(I,J2),J2=1,5)
+ ELSEIF(MLIST.EQ.1.AND.ABS(P(I,4)).LT.99999D0) THEN
+ WRITE(MSTU(11),5600) I,CHAC(1:12),(K(I,J1),J1=1,3),
+ & (P(I,J2),J2=1,5)
+ ELSEIF(MLIST.EQ.1) THEN
+ WRITE(MSTU(11),5700) I,CHAC(1:12),(K(I,J1),J1=1,3),
+ & (P(I,J2),J2=1,5)
+ ELSEIF(MSTU(5).EQ.10000.AND.(K(I,1).EQ.3.OR.K(I,1).EQ.13.OR.
+ & K(I,1).EQ.14.OR.K(I,1).EQ.42.OR.K(I,1).EQ.52)) THEN
+ IF(MLIST.NE.4) WRITE(MSTU(11),5800) I,CHAC,(K(I,J1),J1=1,3),
+ & K(I,4)/100000000,MOD(K(I,4)/10000,10000),MOD(K(I,4),10000),
+ & K(I,5)/100000000,MOD(K(I,5)/10000,10000),MOD(K(I,5),10000),
+ & (P(I,J2),J2=1,5)
+ IF(MLIST.EQ.4) WRITE(MSTU(11),5900) I,CHAC,(K(I,J1),J1=1,3),
+ & K(I,4)/100000000,MOD(K(I,4)/10000,10000),MOD(K(I,4),10000),
+ & K(I,5)/100000000,MOD(K(I,5)/10000,10000),MOD(K(I,5)
+ & ,10000),MCT(I,1),MCT(I,2)
+ ELSE
+ IF(MLIST.NE.4) WRITE(MSTU(11),6000) I,CHAC,(K(I,J1),J1=1,5),
+ & (P(I,J2),J2=1,5)
+ IF(MLIST.EQ.4) WRITE(MSTU(11),6100) I,CHAC,(K(I,J1),J1=1,5)
+ & ,MCT(I,1),MCT(I,2)
+ ENDIF
+ IF(MLIST.EQ.3) WRITE(MSTU(11),6200) (V(I,J),J=1,5)
+
+C...Insert extra separator lines specified by user.
+ IF(MSTU(70).GE.1) THEN
+ ISEP=0
+ DO 110 J=1,MIN(10,MSTU(70))
+ IF(I.EQ.MSTU(70+J)) ISEP=1
+ 110 CONTINUE
+ IF(ISEP.EQ.1) THEN
+ IF(MLIST.EQ.1) WRITE(MSTU(11),6300)
+ IF(MLIST.EQ.2.OR.MLIST.EQ.3) WRITE(MSTU(11),6400)
+ IF(MLIST.EQ.4) WRITE(MSTU(11),6500)
+ ENDIF
+ ENDIF
+ 120 CONTINUE
+
+C...Sum of charges and momenta.
+ DO 130 J=1,6
+ PS(J)=PYP(0,J)
+ 130 CONTINUE
+ IF(MLIST.EQ.1.AND.ABS(PS(4)).LT.9999D0) THEN
+ WRITE(MSTU(11),6600) PS(6),(PS(J),J=1,5)
+ ELSEIF(MLIST.EQ.1.AND.ABS(PS(4)).LT.99999D0) THEN
+ WRITE(MSTU(11),6700) PS(6),(PS(J),J=1,5)
+ ELSEIF(MLIST.EQ.1) THEN
+ WRITE(MSTU(11),6800) PS(6),(PS(J),J=1,5)
+ ELSEIF(MLIST.LE.3) THEN
+ WRITE(MSTU(11),6900) PS(6),(PS(J),J=1,5)
+ ELSE
+ WRITE(MSTU(11),7000) PS(6)
+ ENDIF
+
+C...Simple listing of HEPEVT entries (mainly for test purposes).
+ ELSEIF(MLIST.EQ.5) THEN
+ WRITE(MSTU(11),7100)
+ DO 140 I=1,NHEP
+ IF(ISTHEP(I).EQ.0) GOTO 140
+ WRITE(MSTU(11),7200) I,ISTHEP(I),IDHEP(I),JMOHEP(1,I),
+ & JMOHEP(2,I),JDAHEP(1,I),JDAHEP(2,I),(PHEP(J,I),J=1,5)
+ 140 CONTINUE
+
+
+C...Simple listing of user-process entries (mainly for test purposes).
+ ELSEIF(MLIST.EQ.7) THEN
+ WRITE(MSTU(11),7300)
+ DO 150 I=1,NUP
+ WRITE(MSTU(11),7400) I,ISTUP(I),IDUP(I),MOTHUP(1,I),
+ & MOTHUP(2,I),ICOLUP(1,I),ICOLUP(2,I),(PUP(J,I),J=1,5)
+ 150 CONTINUE
+
+C...Give simple list of KF codes defined in program.
+ ELSEIF(MLIST.EQ.11) THEN
+ WRITE(MSTU(11),7500)
+ DO 160 KF=1,80
+ CALL PYNAME(KF,CHAP)
+ CALL PYNAME(-KF,CHAN)
+ IF(CHAP.NE.' '.AND.CHAN.EQ.' ') WRITE(MSTU(11),7600) KF,CHAP
+ IF(CHAN.NE.' ') WRITE(MSTU(11),7600) KF,CHAP,-KF,CHAN
+ 160 CONTINUE
+ DO 190 KFLS=1,3,2
+ DO 180 KFLA=1,5
+ DO 170 KFLB=1,KFLA-(3-KFLS)/2
+ KF=1000*KFLA+100*KFLB+KFLS
+ CALL PYNAME(KF,CHAP)
+ CALL PYNAME(-KF,CHAN)
+ WRITE(MSTU(11),7600) KF,CHAP,-KF,CHAN
+ 170 CONTINUE
+ 180 CONTINUE
+ 190 CONTINUE
+ DO 220 KMUL=0,5
+ KFLS=3
+ IF(KMUL.EQ.0.OR.KMUL.EQ.3) KFLS=1
+ IF(KMUL.EQ.5) KFLS=5
+ KFLR=0
+ IF(KMUL.EQ.2.OR.KMUL.EQ.3) KFLR=1
+ IF(KMUL.EQ.4) KFLR=2
+ DO 210 KFLB=1,5
+ DO 200 KFLC=1,KFLB-1
+ KF=10000*KFLR+100*KFLB+10*KFLC+KFLS
+ CALL PYNAME(KF,CHAP)
+ CALL PYNAME(-KF,CHAN)
+ WRITE(MSTU(11),7600) KF,CHAP,-KF,CHAN
+ IF(KF.EQ.311) THEN
+ KFK=130
+ CALL PYNAME(KFK,CHAP)
+ WRITE(MSTU(11),7600) KFK,CHAP
+ KFK=310
+ CALL PYNAME(KFK,CHAP)
+ WRITE(MSTU(11),7600) KFK,CHAP
+ ENDIF
+ 200 CONTINUE
+ KF=10000*KFLR+110*KFLB+KFLS
+ CALL PYNAME(KF,CHAP)
+ WRITE(MSTU(11),7600) KF,CHAP
+ 210 CONTINUE
+ 220 CONTINUE
+ KF=100443
+ CALL PYNAME(KF,CHAP)
+ WRITE(MSTU(11),7600) KF,CHAP
+ KF=100553
+ CALL PYNAME(KF,CHAP)
+ WRITE(MSTU(11),7600) KF,CHAP
+ DO 260 KFLSP=1,3
+ KFLS=2+2*(KFLSP/3)
+ DO 250 KFLA=1,5
+ DO 240 KFLB=1,KFLA
+ DO 230 KFLC=1,KFLB
+ IF(KFLSP.EQ.1.AND.(KFLA.EQ.KFLB.OR.KFLB.EQ.KFLC))
+ & GOTO 230
+ IF(KFLSP.EQ.2.AND.KFLA.EQ.KFLC) GOTO 230
+ IF(KFLSP.EQ.1) KF=1000*KFLA+100*KFLC+10*KFLB+KFLS
+ IF(KFLSP.GE.2) KF=1000*KFLA+100*KFLB+10*KFLC+KFLS
+ CALL PYNAME(KF,CHAP)
+ CALL PYNAME(-KF,CHAN)
+ WRITE(MSTU(11),7600) KF,CHAP,-KF,CHAN
+ 230 CONTINUE
+ 240 CONTINUE
+ 250 CONTINUE
+ 260 CONTINUE
+ DO 270 KC=1,500
+ KF=KCHG(KC,4)
+ IF(KF.LT.1000000) GOTO 270
+ CALL PYNAME(KF,CHAP)
+ CALL PYNAME(-KF,CHAN)
+ IF(CHAP.NE.' '.AND.CHAN.EQ.' ') WRITE(MSTU(11),7600) KF,CHAP
+ IF(CHAN.NE.' ') WRITE(MSTU(11),7600) KF,CHAP,-KF,CHAN
+ 270 CONTINUE
+
+C...List parton/particle data table. Check whether to be listed.
+ ELSEIF(MLIST.EQ.12) THEN
+ WRITE(MSTU(11),7700)
+ DO 300 KC=1,MSTU(6)
+ KF=KCHG(KC,4)
+ IF(KF.EQ.0) GOTO 300
+ IF(KF.LT.MSTU(1).OR.(MSTU(2).GT.0.AND.KF.GT.MSTU(2)))
+ & GOTO 300
+
+C...Find particle name and mass. Print information.
+ CALL PYNAME(KF,CHAP)
+ IF(KF.LE.100.AND.CHAP.EQ.' '.AND.MDCY(KC,2).EQ.0) GOTO 300
+ CALL PYNAME(-KF,CHAN)
+ WRITE(MSTU(11),7800) KF,KC,CHAP,CHAN,(KCHG(KC,J1),J1=1,3),
+ & (PMAS(KC,J2),J2=1,4),MDCY(KC,1)
+
+C...Particle decay: channel number, branching ratios, matrix element,
+C...decay products.
+ DO 290 IDC=MDCY(KC,2),MDCY(KC,2)+MDCY(KC,3)-1
+ DO 280 J=1,5
+ CALL PYNAME(KFDP(IDC,J),CHAD(J))
+ 280 CONTINUE
+ WRITE(MSTU(11),7900) IDC,MDME(IDC,1),MDME(IDC,2),BRAT(IDC),
+ & (CHAD(J),J=1,5)
+ 290 CONTINUE
+ 300 CONTINUE
+
+C...List parameter value table.
+ ELSEIF(MLIST.EQ.13) THEN
+ WRITE(MSTU(11),8000)
+ DO 310 I=1,200
+ WRITE(MSTU(11),8100) I,MSTU(I),PARU(I),MSTJ(I),PARJ(I),PARF(I)
+ 310 CONTINUE
+ ENDIF
+
+C...Format statements for output on unit MSTU(11) (by default 6).
+ 5100 FORMAT(///28X,'Event listing (summary)'//4X,'I particle/jet KS',
+ &5X,'KF orig p_x p_y p_z E m'/)
+ 5200 FORMAT(///28X,'Event listing (standard)'//4X,'I particle/jet',
+ &' K(I,1) K(I,2) K(I,3) K(I,4) K(I,5) P(I,1)',
+ &' P(I,2) P(I,3) P(I,4) P(I,5)'/)
+ 5300 FORMAT(///28X,'Event listing (with vertices)'//4X,'I particle/j',
+ &'et K(I,1) K(I,2) K(I,3) K(I,4) K(I,5) P(I,1)',
+ &' P(I,2) P(I,3) P(I,4) P(I,5)'/73X,
+ &'V(I,1) V(I,2) V(I,3) V(I,4) V(I,5)'/)
+ 5400 FORMAT(///28X,'Event listing (no momenta)'//4X,'I particle/jet',
+ & ' K(I,1) K(I,2) K(I,3) K(I,4) K(I,5)',1X
+ & ,' C tag AC tag'/)
+ 5500 FORMAT(1X,I4,1X,A12,1X,I2,I8,1X,I4,5F9.3)
+ 5600 FORMAT(1X,I4,1X,A12,1X,I2,I8,1X,I4,5F9.2)
+ 5700 FORMAT(1X,I4,1X,A12,1X,I2,I8,1X,I4,5F9.1)
+ 5800 FORMAT(1X,I4,2X,A16,1X,I3,1X,I9,1X,I4,2(3X,I1,2I4),5F13.5)
+ 5900 FORMAT(1X,I4,2X,A16,1X,I3,1X,I9,1X,I4,2(3X,I1,2I4),1X,2I8)
+ 6000 FORMAT(1X,I4,2X,A16,1X,I3,1X,I9,1X,I4,2(3X,I9),5F13.5)
+ 6100 FORMAT(1X,I4,2X,A16,1X,I3,1X,I9,1X,I4,2(3X,I9),1X,2I8)
+ 6200 FORMAT(66X,5(1X,F12.3))
+ 6300 FORMAT(1X,78('='))
+ 6400 FORMAT(1X,130('='))
+ 6500 FORMAT(1X,65('='))
+ 6600 FORMAT(19X,'sum:',F6.2,5X,5F9.3)
+ 6700 FORMAT(19X,'sum:',F6.2,5X,5F9.2)
+ 6800 FORMAT(19X,'sum:',F6.2,5X,5F9.1)
+ 6900 FORMAT(19X,'sum charge:',F6.2,3X,'sum momentum and inv. mass:',
+ &5F13.5)
+ 7000 FORMAT(19X,'sum charge:',F6.2)
+ 7100 FORMAT(/10X,'Event listing of HEPEVT common block (simplified)'
+ &//' I IST ID Mothers Daughters p_x p_y p_z',
+ &' E m')
+ 7200 FORMAT(1X,I4,I2,I8,4I5,5F9.3)
+ 7300 FORMAT(/10X,'Event listing of user process at input (simplified)'
+ &//' I IST ID Mothers Colours p_x p_y p_z',
+ &' E m')
+ 7400 FORMAT(1X,I3,I3,I8,2I4,2I5,5F9.3)
+ 7500 FORMAT(///20X,'List of KF codes in program'/)
+ 7600 FORMAT(4X,I9,4X,A16,6X,I9,4X,A16)
+ 7700 FORMAT(///30X,'Particle/parton data table'//8X,'KF',5X,'KC',4X,
+ &'particle',8X,'antiparticle',6X,'chg col anti',8X,'mass',7X,
+ &'width',7X,'w-cut',5X,'lifetime',1X,'decay'/11X,'IDC',1X,'on/off',
+ &1X,'ME',3X,'Br.rat.',4X,'decay products')
+ 7800 FORMAT(/1X,I9,3X,I4,4X,A16,A16,3I5,1X,F12.5,2(1X,F11.5),
+ &1X,1P,E13.5,3X,I2)
+ 7900 FORMAT(10X,I4,2X,I3,2X,I3,2X,F10.6,4X,5A16)
+ 8000 FORMAT(///20X,'Parameter value table'//4X,'I',3X,'MSTU(I)',
+ &8X,'PARU(I)',3X,'MSTJ(I)',8X,'PARJ(I)',8X,'PARF(I)')
+ 8100 FORMAT(1X,I4,1X,I9,1X,F14.5,1X,I9,1X,F14.5,1X,F14.5)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYLOGO
+C...Writes a logo for the program.
+
+ SUBROUTINE PYLOGO
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter for length of information block.
+ PARAMETER (IREFER=21)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ SAVE /PYDAT1/,/PYPARS/
+C...Local arrays and character variables.
+ INTEGER IDATI(6)
+ CHARACTER MONTH(12)*3, LOGO(48)*32, REFER(2*IREFER)*36, LINE*79,
+ &VERS*1, SUBV*3, DATE*2, YEAR*4, HOUR*2, MINU*2, SECO*2
+
+C...Data on months, logo, titles, and references.
+ DATA MONTH/'Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep',
+ &'Oct','Nov','Dec'/
+ DATA (LOGO(J),J=1,19)/
+ &' *......* ',
+ &' *:::!!:::::::::::* ',
+ &' *::::::!!::::::::::::::* ',
+ &' *::::::::!!::::::::::::::::* ',
+ &' *:::::::::!!:::::::::::::::::* ',
+ &' *:::::::::!!:::::::::::::::::* ',
+ &' *::::::::!!::::::::::::::::*! ',
+ &' *::::::!!::::::::::::::* !! ',
+ &' !! *:::!!:::::::::::* !! ',
+ &' !! !* -><- * !! ',
+ &' !! !! !! ',
+ &' !! !! !! ',
+ &' !! !! ',
+ &' !! lh !! ',
+ &' !! !! ',
+ &' !! hh !! ',
+ &' !! ll !! ',
+ &' !! !! ',
+ &' !! '/
+ DATA (LOGO(J),J=20,38)/
+ &'Welcome to the Lund Monte Carlo!',
+ &' ',
+ &'PPP Y Y TTTTT H H III A ',
+ &'P P Y Y T H H I A A ',
+ &'PPP Y T HHHHH I AAAAA',
+ &'P Y T H H I A A',
+ &'P Y T H H III A A',
+ &' ',
+ &'This is PYTHIA version x.xxx ',
+ &'Last date of change: xx xxx 200x',
+ &' ',
+ &'Now is xx xxx 200x at xx:xx:xx ',
+ &' ',
+ &'Disclaimer: this program comes ',
+ &'without any guarantees. Beware ',
+ &'of errors and use common sense ',
+ &'when interpreting results. ',
+ &' ',
+ &'Copyright T. Sjostrand (2007) '/
+ DATA (REFER(J),J=1,14)/
+ &'An archive of program versions and d',
+ &'ocumentation is found on the web: ',
+ &'http://www.thep.lu.se/~torbjorn/Pyth',
+ &'ia.html ',
+ &' ',
+ &' ',
+ &'When you cite this program, the offi',
+ &'cial reference is to the 6.4 manual:',
+ &'T. Sjostrand, S. Mrenna and P. Skand',
+ &'s, JHEP05 (2006) 026 ',
+ &'(LU TP 06-13, FERMILAB-PUB-06-052-CD',
+ &'-T) [hep-ph/0603175]. ',
+ &' ',
+ &' '/
+ DATA (REFER(J),J=15,32)/
+ &'Also remember that the program, to a',
+ &' large extent, represents original ',
+ &'physics research. Other publications',
+ &' of special relevance to your ',
+ &'studies may therefore deserve separa',
+ &'te mention. ',
+ &' ',
+ &' ',
+ &'Main author: Torbjorn Sjostrand; CER',
+ &'N/PH, CH-1211 Geneva, Switzerland, ',
+ &' and Department of Theoretical Phys',
+ &'ics, Lund University, Lund, Sweden; ',
+ &' phone: + 41 - 22 - 767 82 27; e-ma',
+ &'il: torbjorn@thep.lu.se ',
+ &'Author: Stephen Mrenna; Computing Di',
+ &'vision, GDS Group, ',
+ &' Fermi National Accelerator Laborat',
+ &'ory, MS 234, Batavia, IL 60510, USA;'/
+ DATA (REFER(J),J=33,2*IREFER)/
+ &' phone: + 1 - 630 - 840 - 2556; e-m',
+ &'ail: mrenna@fnal.gov ',
+ &'Author: Peter Skands; Theoretical Ph',
+ &'ysics Department, ',
+ &' Fermi National Accelerator Laborat',
+ &'ory, MS 106, Batavia, IL 60510, USA;',
+ &' and CERN/PH, CH-1211 Geneva, Switz',
+ &'erland; ',
+ &' phone: + 41 - 22 - 767 24 59; e-ma',
+ &'il: skands@fnal.gov '/
+
+C...Check that PYDATA linked.
+ IF(MSTP(183)/10.NE.199.AND.MSTP(183)/10.NE.200) THEN
+ WRITE(*,'(1X,A)')
+ & 'Error: PYDATA has not been linked.'
+ WRITE(*,'(1X,A)') 'Execution stopped!'
+ CALL PYSTOP(8)
+
+C...Write current version number and current date+time.
+ ELSE
+ WRITE(VERS,'(I1)') MSTP(181)
+ LOGO(28)(24:24)=VERS
+ WRITE(SUBV,'(I3)') MSTP(182)
+ LOGO(28)(26:28)=SUBV
+ IF(MSTP(182).LT.100) LOGO(28)(26:26)='0'
+ WRITE(DATE,'(I2)') MSTP(185)
+ LOGO(29)(22:23)=DATE
+ LOGO(29)(25:27)=MONTH(MSTP(184))
+ WRITE(YEAR,'(I4)') MSTP(183)
+ LOGO(29)(29:32)=YEAR
+ CALL PYTIME(IDATI)
+ IF(IDATI(1).LE.0) THEN
+ LOGO(31)=' '
+ ELSE
+ WRITE(DATE,'(I2)') IDATI(3)
+ LOGO(31)(8:9)=DATE
+ LOGO(31)(11:13)=MONTH(MAX(1,MIN(12,IDATI(2))))
+ WRITE(YEAR,'(I4)') IDATI(1)
+ LOGO(31)(15:18)=YEAR
+ WRITE(HOUR,'(I2)') IDATI(4)
+ LOGO(31)(23:24)=HOUR
+ WRITE(MINU,'(I2)') IDATI(5)
+ LOGO(31)(26:27)=MINU
+ IF(IDATI(5).LT.10) LOGO(31)(26:26)='0'
+ WRITE(SECO,'(I2)') IDATI(6)
+ LOGO(31)(29:30)=SECO
+ IF(IDATI(6).LT.10) LOGO(31)(29:29)='0'
+ ENDIF
+ ENDIF
+
+C...Loop over lines in header. Define page feed and side borders.
+ DO 100 ILIN=1,29+IREFER
+ LINE=' '
+ IF(ILIN.EQ.1) THEN
+ LINE(1:1)='1'
+ ELSE
+ LINE(2:3)='**'
+ LINE(78:79)='**'
+ ENDIF
+
+C...Separator lines and logos.
+ IF(ILIN.EQ.2.OR.ILIN.EQ.3.OR.ILIN.GE.28+IREFER) THEN
+ LINE(4:77)='***********************************************'//
+ & '***************************'
+ ELSEIF(ILIN.GE.6.AND.ILIN.LE.24) THEN
+ LINE(6:37)=LOGO(ILIN-5)
+ LINE(44:75)=LOGO(ILIN+14)
+ ELSEIF(ILIN.GE.26.AND.ILIN.LE.25+IREFER) THEN
+ LINE(5:40)=REFER(2*ILIN-51)
+ LINE(41:76)=REFER(2*ILIN-50)
+ ENDIF
+
+C...Write lines to appropriate unit.
+ WRITE(MSTU(11),'(A79)') LINE
+ 100 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYUPDA
+C...Facilitates the updating of particle and decay data
+C...by allowing it to be done in an external file.
+
+ SUBROUTINE PYUPDA(MUPDA,LFN)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ COMMON/PYDAT4/CHAF(500,2)
+ CHARACTER CHAF*16
+ COMMON/PYINT4/MWID(500),WIDS(500,5)
+ SAVE /PYDAT1/,/PYDAT2/,/PYDAT3/,/PYDAT4/,/PYINT4/
+C...Local arrays, character variables and data.
+ CHARACTER CHINL*120,CHKF*9,CHVAR(22)*9,CHLIN*72,
+ &CHBLK(20)*72,CHOLD*16,CHTMP*16,CHNEW*16,CHCOM*24
+ DATA CHVAR/ 'KCHG(I,1)','KCHG(I,2)','KCHG(I,3)','KCHG(I,4)',
+ &'PMAS(I,1)','PMAS(I,2)','PMAS(I,3)','PMAS(I,4)','MDCY(I,1)',
+ &'MDCY(I,2)','MDCY(I,3)','MDME(I,1)','MDME(I,2)','BRAT(I) ',
+ &'KFDP(I,1)','KFDP(I,2)','KFDP(I,3)','KFDP(I,4)','KFDP(I,5)',
+ &'CHAF(I,1)','CHAF(I,2)','MWID(I) '/
+
+C...Write header if not yet done.
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+
+C...Write information on file for editing.
+ IF(MUPDA.EQ.1) THEN
+ DO 110 KC=1,500
+ WRITE(LFN,5000) KCHG(KC,4),(CHAF(KC,J1),J1=1,2),
+ & (KCHG(KC,J2),J2=1,3),(PMAS(KC,J3),J3=1,4),
+ & MWID(KC),MDCY(KC,1)
+ DO 100 IDC=MDCY(KC,2),MDCY(KC,2)+MDCY(KC,3)-1
+ WRITE(LFN,5100) MDME(IDC,1),MDME(IDC,2),BRAT(IDC),
+ & (KFDP(IDC,J),J=1,5)
+ 100 CONTINUE
+ 110 CONTINUE
+
+C...Read complete set of information from edited file or
+C...read partial set of new or updated information from edited file.
+ ELSEIF(MUPDA.EQ.2.OR.MUPDA.EQ.3) THEN
+
+C...Reset counters.
+ KCC=100
+ NDC=0
+ CHKF=' '
+ IF(MUPDA.EQ.2) THEN
+ DO 120 I=1,MSTU(6)
+ KCHG(I,4)=0
+ 120 CONTINUE
+ ELSE
+ DO 130 KC=1,MSTU(6)
+ IF(KC.GT.100.AND.KCHG(KC,4).GT.100) KCC=KC
+ NDC=MAX(NDC,MDCY(KC,2)+MDCY(KC,3)-1)
+ 130 CONTINUE
+ ENDIF
+
+C...Begin of loop: read new line; unknown whether particle or
+C...decay data.
+ 140 READ(LFN,5200,END=190) CHINL
+
+C...Identify particle code and whether already defined (for MUPDA=3).
+ IF(CHINL(2:10).NE.' ') THEN
+ CHKF=CHINL(2:10)
+ READ(CHKF,5300) KF
+ IF(MUPDA.EQ.2) THEN
+ IF(KF.LE.100) THEN
+ KC=KF
+ ELSE
+ KCC=KCC+1
+ KC=KCC
+ ENDIF
+ ELSE
+ KCREP=0
+ IF(KF.LE.100) THEN
+ KCREP=KF
+ ELSE
+ DO 150 KCR=101,KCC
+ IF(KCHG(KCR,4).EQ.KF) KCREP=KCR
+ 150 CONTINUE
+ ENDIF
+C...Remove duplicate old decay data.
+ IF(KCREP.NE.0.AND.MDCY(KCREP,3).GT.0) THEN
+ IDCREP=MDCY(KCREP,2)
+ NDCREP=MDCY(KCREP,3)
+ DO 160 I=1,KCC
+ IF(MDCY(I,2).GT.IDCREP) MDCY(I,2)=MDCY(I,2)-NDCREP
+ 160 CONTINUE
+ DO 180 I=IDCREP,NDC-NDCREP
+ MDME(I,1)=MDME(I+NDCREP,1)
+ MDME(I,2)=MDME(I+NDCREP,2)
+ BRAT(I)=BRAT(I+NDCREP)
+ DO 170 J=1,5
+ KFDP(I,J)=KFDP(I+NDCREP,J)
+ 170 CONTINUE
+ 180 CONTINUE
+ NDC=NDC-NDCREP
+ KC=KCREP
+ ELSEIF(KCREP.NE.0) THEN
+ KC=KCREP
+ ELSE
+ KCC=KCC+1
+ KC=KCC
+ ENDIF
+ ENDIF
+
+C...Study line with particle data.
+ IF(KC.GT.MSTU(6)) CALL PYERRM(27,
+ & '(PYUPDA:) Particle arrays full by KF ='//CHKF)
+ READ(CHINL,5000) KCHG(KC,4),(CHAF(KC,J1),J1=1,2),
+ & (KCHG(KC,J2),J2=1,3),(PMAS(KC,J3),J3=1,4),
+ & MWID(KC),MDCY(KC,1)
+ MDCY(KC,2)=0
+ MDCY(KC,3)=0
+
+C...Study line with decay data.
+ ELSE
+ NDC=NDC+1
+ IF(NDC.GT.MSTU(7)) CALL PYERRM(27,
+ & '(PYUPDA:) Decay data arrays full by KF ='//CHKF)
+ IF(MDCY(KC,2).EQ.0) MDCY(KC,2)=NDC
+ MDCY(KC,3)=MDCY(KC,3)+1
+ READ(CHINL,5100) MDME(NDC,1),MDME(NDC,2),BRAT(NDC),
+ & (KFDP(NDC,J),J=1,5)
+ ENDIF
+
+C...End of loop; ensure that PYCOMP tables are updated.
+ GOTO 140
+ 190 CONTINUE
+ MSTU(20)=0
+
+C...Perform possible tests that new information is consistent.
+ DO 220 KC=1,MSTU(6)
+ KF=KCHG(KC,4)
+ IF(KF.EQ.0) GOTO 220
+ WRITE(CHKF,5300) KF
+ IF(MIN(PMAS(KC,1),PMAS(KC,2),PMAS(KC,3),PMAS(KC,1)-PMAS(KC,3),
+ & PMAS(KC,4)).LT.0D0.OR.MDCY(KC,3).LT.0) CALL PYERRM(17,
+ & '(PYUPDA:) Mass/width/life/(# channels) wrong for KF ='//CHKF)
+ BRSUM=0D0
+ DO 210 IDC=MDCY(KC,2),MDCY(KC,2)+MDCY(KC,3)-1
+ IF(MDME(IDC,2).GT.80) GOTO 210
+ KQ=KCHG(KC,1)
+ PMS=PMAS(KC,1)-PMAS(KC,3)-PARJ(64)
+ MERR=0
+ DO 200 J=1,5
+ KP=KFDP(IDC,J)
+ IF(KP.EQ.0.OR.KP.EQ.81.OR.IABS(KP).EQ.82) THEN
+ IF(KP.EQ.81) KQ=0
+ ELSEIF(PYCOMP(KP).EQ.0) THEN
+ MERR=3
+ ELSE
+ KQ=KQ-PYCHGE(KP)
+ KPC=PYCOMP(KP)
+ PMS=PMS-PMAS(KPC,1)
+ IF(MSTJ(24).GT.0) PMS=PMS+0.5D0*MIN(PMAS(KPC,2),
+ & PMAS(KPC,3))
+ ENDIF
+ 200 CONTINUE
+ IF(KQ.NE.0) MERR=MAX(2,MERR)
+ IF(MWID(KC).EQ.0.AND.KF.NE.311.AND.PMS.LT.0D0)
+ & MERR=MAX(1,MERR)
+ IF(MERR.EQ.3) CALL PYERRM(17,
+ & '(PYUPDA:) Unknown particle code in decay of KF ='//CHKF)
+ IF(MERR.EQ.2) CALL PYERRM(17,
+ & '(PYUPDA:) Charge not conserved in decay of KF ='//CHKF)
+ IF(MERR.EQ.1) CALL PYERRM(7,
+ & '(PYUPDA:) Kinematically unallowed decay of KF ='//CHKF)
+ BRSUM=BRSUM+BRAT(IDC)
+ 210 CONTINUE
+ WRITE(CHTMP,5500) BRSUM
+ IF(ABS(BRSUM).GT.0.0005D0.AND.ABS(BRSUM-1D0).GT.0.0005D0)
+ & CALL PYERRM(7,'(PYUPDA:) Sum of branching ratios is '//
+ & CHTMP(9:16)//' for KF ='//CHKF)
+ 220 CONTINUE
+
+C...Write DATA statements for inclusion in program.
+ ELSEIF(MUPDA.EQ.4) THEN
+
+C...Find out how many codes and decay channels are actually used.
+ KCC=0
+ NDC=0
+ DO 230 I=1,MSTU(6)
+ IF(KCHG(I,4).NE.0) THEN
+ KCC=I
+ NDC=MAX(NDC,MDCY(I,2)+MDCY(I,3)-1)
+ ENDIF
+ 230 CONTINUE
+
+C...Initialize writing of DATA statements for inclusion in program.
+ DO 300 IVAR=1,22
+ NDIM=MSTU(6)
+ IF(IVAR.GE.12.AND.IVAR.LE.19) NDIM=MSTU(7)
+ NLIN=1
+ CHLIN=' '
+ CHLIN(7:35)='DATA ('//CHVAR(IVAR)//',I= 1, )/'
+ LLIN=35
+ CHOLD='START'
+
+C...Loop through variables for conversion to characters.
+ DO 280 IDIM=1,NDIM
+ IF(IVAR.EQ.1) WRITE(CHTMP,5400) KCHG(IDIM,1)
+ IF(IVAR.EQ.2) WRITE(CHTMP,5400) KCHG(IDIM,2)
+ IF(IVAR.EQ.3) WRITE(CHTMP,5400) KCHG(IDIM,3)
+ IF(IVAR.EQ.4) WRITE(CHTMP,5400) KCHG(IDIM,4)
+ IF(IVAR.EQ.5) WRITE(CHTMP,5500) PMAS(IDIM,1)
+ IF(IVAR.EQ.6) WRITE(CHTMP,5500) PMAS(IDIM,2)
+ IF(IVAR.EQ.7) WRITE(CHTMP,5500) PMAS(IDIM,3)
+ IF(IVAR.EQ.8) WRITE(CHTMP,5500) PMAS(IDIM,4)
+ IF(IVAR.EQ.9) WRITE(CHTMP,5400) MDCY(IDIM,1)
+ IF(IVAR.EQ.10) WRITE(CHTMP,5400) MDCY(IDIM,2)
+ IF(IVAR.EQ.11) WRITE(CHTMP,5400) MDCY(IDIM,3)
+ IF(IVAR.EQ.12) WRITE(CHTMP,5400) MDME(IDIM,1)
+ IF(IVAR.EQ.13) WRITE(CHTMP,5400) MDME(IDIM,2)
+ IF(IVAR.EQ.14) WRITE(CHTMP,5600) BRAT(IDIM)
+ IF(IVAR.EQ.15) WRITE(CHTMP,5400) KFDP(IDIM,1)
+ IF(IVAR.EQ.16) WRITE(CHTMP,5400) KFDP(IDIM,2)
+ IF(IVAR.EQ.17) WRITE(CHTMP,5400) KFDP(IDIM,3)
+ IF(IVAR.EQ.18) WRITE(CHTMP,5400) KFDP(IDIM,4)
+ IF(IVAR.EQ.19) WRITE(CHTMP,5400) KFDP(IDIM,5)
+ IF(IVAR.EQ.20) CHTMP=CHAF(IDIM,1)
+ IF(IVAR.EQ.21) CHTMP=CHAF(IDIM,2)
+ IF(IVAR.EQ.22) WRITE(CHTMP,5400) MWID(IDIM)
+
+C...Replace variables beyond what is properly defined.
+ IF(IVAR.LE.4) THEN
+ IF(IDIM.GT.KCC) CHTMP=' 0'
+ ELSEIF(IVAR.LE.8) THEN
+ IF(IDIM.GT.KCC) CHTMP=' 0.0'
+ ELSEIF(IVAR.LE.11) THEN
+ IF(IDIM.GT.KCC) CHTMP=' 0'
+ ELSEIF(IVAR.LE.13) THEN
+ IF(IDIM.GT.NDC) CHTMP=' 0'
+ ELSEIF(IVAR.LE.14) THEN
+ IF(IDIM.GT.NDC) CHTMP=' 0.0'
+ ELSEIF(IVAR.LE.19) THEN
+ IF(IDIM.GT.NDC) CHTMP=' 0'
+ ELSEIF(IVAR.LE.21) THEN
+ IF(IDIM.GT.KCC) CHTMP=' '
+ ELSE
+ IF(IDIM.GT.KCC) CHTMP=' 0'
+ ENDIF
+
+C...Length of variable, trailing decimal zeros, quotation marks.
+ LLOW=1
+ LHIG=1
+ DO 240 LL=1,16
+ IF(CHTMP(17-LL:17-LL).NE.' ') LLOW=17-LL
+ IF(CHTMP(LL:LL).NE.' ') LHIG=LL
+ 240 CONTINUE
+ CHNEW=CHTMP(LLOW:LHIG)//' '
+ LNEW=1+LHIG-LLOW
+ IF((IVAR.GE.5.AND.IVAR.LE.8).OR.IVAR.EQ.14) THEN
+ LNEW=LNEW+1
+ 250 LNEW=LNEW-1
+ IF(LNEW.GE.2.AND.CHNEW(LNEW:LNEW).EQ.'0') GOTO 250
+ IF(CHNEW(LNEW:LNEW).EQ.'.') LNEW=LNEW-1
+ IF(LNEW.EQ.0) THEN
+ CHNEW(1:3)='0D0'
+ LNEW=3
+ ELSE
+ CHNEW(LNEW+1:LNEW+2)='D0'
+ LNEW=LNEW+2
+ ENDIF
+ ELSEIF(IVAR.EQ.20.OR.IVAR.EQ.21) THEN
+ DO 260 LL=LNEW,1,-1
+ IF(CHNEW(LL:LL).EQ.'''') THEN
+ CHTMP=CHNEW
+ CHNEW=CHTMP(1:LL)//''''//CHTMP(LL+1:11)
+ LNEW=LNEW+1
+ ENDIF
+ 260 CONTINUE
+ LNEW=MIN(14,LNEW)
+ CHTMP=CHNEW
+ CHNEW(1:LNEW+2)=''''//CHTMP(1:LNEW)//''''
+ LNEW=LNEW+2
+ ENDIF
+
+C...Form composite character string, often including repetition counter.
+ IF(CHNEW.NE.CHOLD) THEN
+ NRPT=1
+ CHOLD=CHNEW
+ CHCOM=CHNEW
+ LCOM=LNEW
+ ELSE
+ LRPT=LNEW+1
+ IF(NRPT.GE.2) LRPT=LNEW+3
+ IF(NRPT.GE.10) LRPT=LNEW+4
+ IF(NRPT.GE.100) LRPT=LNEW+5
+ IF(NRPT.GE.1000) LRPT=LNEW+6
+ LLIN=LLIN-LRPT
+ NRPT=NRPT+1
+ WRITE(CHTMP,5400) NRPT
+ LRPT=1
+ IF(NRPT.GE.10) LRPT=2
+ IF(NRPT.GE.100) LRPT=3
+ IF(NRPT.GE.1000) LRPT=4
+ CHCOM(1:LRPT+1+LNEW)=CHTMP(17-LRPT:16)//'*'//CHNEW(1:LNEW)
+ LCOM=LRPT+1+LNEW
+ ENDIF
+
+C...Add characters to end of line, to new line (after storing old line),
+C...or to new block of lines (after writing old block).
+ IF(LLIN+LCOM.LE.70) THEN
+ CHLIN(LLIN+1:LLIN+LCOM+1)=CHCOM(1:LCOM)//','
+ LLIN=LLIN+LCOM+1
+ ELSEIF(NLIN.LE.19) THEN
+ CHLIN(LLIN+1:72)=' '
+ CHBLK(NLIN)=CHLIN
+ NLIN=NLIN+1
+ CHLIN(6:6+LCOM+1)='&'//CHCOM(1:LCOM)//','
+ LLIN=6+LCOM+1
+ ELSE
+ CHLIN(LLIN:72)='/'//' '
+ CHBLK(NLIN)=CHLIN
+ WRITE(CHTMP,5400) IDIM-NRPT
+ CHBLK(1)(30:33)=CHTMP(13:16)
+ DO 270 ILIN=1,NLIN
+ WRITE(LFN,5700) CHBLK(ILIN)
+ 270 CONTINUE
+ NLIN=1
+ CHLIN=' '
+ CHLIN(7:35+LCOM+1)='DATA ('//CHVAR(IVAR)//
+ & ',I= , )/'//CHCOM(1:LCOM)//','
+ WRITE(CHTMP,5400) IDIM-NRPT+1
+ CHLIN(25:28)=CHTMP(13:16)
+ LLIN=35+LCOM+1
+ ENDIF
+ 280 CONTINUE
+
+C...Write final block of lines.
+ CHLIN(LLIN:72)='/'//' '
+ CHBLK(NLIN)=CHLIN
+ WRITE(CHTMP,5400) NDIM
+ CHBLK(1)(30:33)=CHTMP(13:16)
+ DO 290 ILIN=1,NLIN
+ WRITE(LFN,5700) CHBLK(ILIN)
+ 290 CONTINUE
+ 300 CONTINUE
+ ENDIF
+
+C...Formats for reading and writing particle data.
+ 5000 FORMAT(1X,I9,2X,A16,2X,A16,3I3,3F12.5,1P,E13.5,2I3)
+ 5100 FORMAT(10X,2I5,F12.6,5I10)
+ 5200 FORMAT(A120)
+ 5300 FORMAT(I9)
+ 5400 FORMAT(I16)
+ 5500 FORMAT(F16.5)
+ 5600 FORMAT(F16.6)
+ 5700 FORMAT(A72)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYK
+C...Provides various integer-valued event related data.
+
+ FUNCTION PYK(I,J)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Default value. For I=0 number of entries, number of stable entries
+C...or 3 times total charge.
+ PYK=0
+ IF(I.LT.0.OR.I.GT.MSTU(4).OR.J.LE.0) THEN
+ ELSEIF(I.EQ.0.AND.J.EQ.1) THEN
+ PYK=N
+ ELSEIF(I.EQ.0.AND.(J.EQ.2.OR.J.EQ.6)) THEN
+ DO 100 I1=1,N
+ IF(J.EQ.2.AND.K(I1,1).GE.1.AND.K(I1,1).LE.10) PYK=PYK+1
+ IF(J.EQ.6.AND.K(I1,1).GE.1.AND.K(I1,1).LE.10) PYK=PYK+
+ & PYCHGE(K(I1,2))
+ 100 CONTINUE
+ ELSEIF(I.EQ.0) THEN
+
+C...For I > 0 direct readout of K matrix or charge.
+ ELSEIF(J.LE.5) THEN
+ PYK=K(I,J)
+ ELSEIF(J.EQ.6) THEN
+ PYK=PYCHGE(K(I,2))
+
+C...Status (existing/fragmented/decayed), parton/hadron separation.
+ ELSEIF(J.LE.8) THEN
+ IF(K(I,1).GE.1.AND.K(I,1).LE.10) PYK=1
+ IF(J.EQ.8) PYK=PYK*K(I,2)
+ ELSEIF(J.LE.12) THEN
+ KFA=IABS(K(I,2))
+ KC=PYCOMP(KFA)
+ KQ=0
+ IF(KC.NE.0) KQ=KCHG(KC,2)
+ IF(J.EQ.9.AND.KC.NE.0.AND.KQ.NE.0) PYK=K(I,2)
+ IF(J.EQ.10.AND.KC.NE.0.AND.KQ.EQ.0) PYK=K(I,2)
+ IF(J.EQ.11) PYK=KC
+ IF(J.EQ.12) PYK=KQ*ISIGN(1,K(I,2))
+
+C...Heaviest flavour in hadron/diquark.
+ ELSEIF(J.EQ.13) THEN
+ KFA=IABS(K(I,2))
+ PYK=MOD(KFA/100,10)*(-1)**MOD(KFA/100,10)
+ IF(KFA.LT.10) PYK=KFA
+ IF(MOD(KFA/1000,10).NE.0) PYK=MOD(KFA/1000,10)
+ PYK=PYK*ISIGN(1,K(I,2))
+
+C...Particle history: generation, ancestor, rank.
+ ELSEIF(J.LE.15) THEN
+ I2=I
+ I1=I
+ 110 PYK=PYK+1
+ I2=I1
+ I1=K(I1,3)
+ IF(I1.GT.0) THEN
+ IF(K(I1,1).GT.0.AND.K(I1,1).LE.20) GOTO 110
+ ENDIF
+ IF(J.EQ.15) PYK=I2
+ ELSEIF(J.EQ.16) THEN
+ KFA=IABS(K(I,2))
+ IF(K(I,1).LE.20.AND.((KFA.GE.11.AND.KFA.LE.20).OR.KFA.EQ.22.OR.
+ & (KFA.GT.100.AND.MOD(KFA/10,10).NE.0))) THEN
+ I1=I
+ 120 I2=I1
+ I1=K(I1,3)
+ IF(I1.GT.0) THEN
+ KFAM=IABS(K(I1,2))
+ ILP=1
+ IF(KFAM.NE.0.AND.KFAM.LE.10) ILP=0
+ IF(KFAM.EQ.21.OR.KFAM.EQ.91.OR.KFAM.EQ.92.OR.KFAM.EQ.93)
+ & ILP=0
+ IF(KFAM.GT.100.AND.MOD(KFAM/10,10).EQ.0) ILP=0
+ IF(ILP.EQ.1) GOTO 120
+ ENDIF
+ IF(K(I1,1).EQ.12) THEN
+ DO 130 I3=I1+1,I2
+ IF(K(I3,3).EQ.K(I2,3).AND.K(I3,2).NE.91.AND.K(I3,2).NE.92
+ & .AND.K(I3,2).NE.93) PYK=PYK+1
+ 130 CONTINUE
+ ELSE
+ I3=I2
+ 140 PYK=PYK+1
+ I3=I3+1
+ IF(I3.LT.N.AND.K(I3,3).EQ.K(I2,3)) GOTO 140
+ ENDIF
+ ENDIF
+
+C...Particle coming from collapsing jet system or not.
+ ELSEIF(J.EQ.17) THEN
+ I1=I
+ 150 PYK=PYK+1
+ I3=I1
+ I1=K(I1,3)
+ I0=MAX(1,I1)
+ KC=PYCOMP(K(I0,2))
+ IF(I1.EQ.0.OR.K(I0,1).LE.0.OR.K(I0,1).GT.20.OR.KC.EQ.0) THEN
+ IF(PYK.EQ.1) PYK=-1
+ IF(PYK.GT.1) PYK=0
+ RETURN
+ ENDIF
+ IF(KCHG(KC,2).EQ.0) GOTO 150
+ IF(K(I1,1).NE.12) PYK=0
+ IF(K(I1,1).NE.12) RETURN
+ I2=I1
+ 160 I2=I2+1
+ IF(I2.LT.N.AND.K(I2,1).NE.11) GOTO 160
+ K3M=K(I3-1,3)
+ IF(K3M.GE.I1.AND.K3M.LE.I2) PYK=0
+ K3P=K(I3+1,3)
+ IF(I3.LT.N.AND.K3P.GE.I1.AND.K3P.LE.I2) PYK=0
+
+C...Number of decay products. Colour flow.
+ ELSEIF(J.EQ.18) THEN
+ IF(K(I,1).EQ.11.OR.K(I,1).EQ.12) PYK=MAX(0,K(I,5)-K(I,4)+1)
+ IF(K(I,4).EQ.0.OR.K(I,5).EQ.0) PYK=0
+ ELSEIF(J.LE.22) THEN
+ IF(K(I,1).NE.3.AND.K(I,1).NE.13.AND.K(I,1).NE.14) RETURN
+ IF(J.EQ.19) PYK=MOD(K(I,4)/MSTU(5),MSTU(5))
+ IF(J.EQ.20) PYK=MOD(K(I,5)/MSTU(5),MSTU(5))
+ IF(J.EQ.21) PYK=MOD(K(I,4),MSTU(5))
+ IF(J.EQ.22) PYK=MOD(K(I,5),MSTU(5))
+ ELSE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYP
+C...Provides various real-valued event related data.
+
+ FUNCTION PYP(I,J)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local array.
+ DIMENSION PSUM(4)
+
+C...Set default value. For I = 0 sum of momenta or charges,
+C...or invariant mass of system.
+ PYP=0D0
+ IF(I.LT.0.OR.I.GT.MSTU(4).OR.J.LE.0) THEN
+ ELSEIF(I.EQ.0.AND.J.LE.4) THEN
+ DO 100 I1=1,N
+ IF(K(I1,1).GT.0.AND.K(I1,1).LE.10) PYP=PYP+P(I1,J)
+ 100 CONTINUE
+ ELSEIF(I.EQ.0.AND.J.EQ.5) THEN
+ DO 120 J1=1,4
+ PSUM(J1)=0D0
+ DO 110 I1=1,N
+ IF(K(I1,1).GT.0.AND.K(I1,1).LE.10) PSUM(J1)=PSUM(J1)+
+ & P(I1,J1)
+ 110 CONTINUE
+ 120 CONTINUE
+ PYP=SQRT(MAX(0D0,PSUM(4)**2-PSUM(1)**2-PSUM(2)**2-PSUM(3)**2))
+ ELSEIF(I.EQ.0.AND.J.EQ.6) THEN
+ DO 130 I1=1,N
+ IF(K(I1,1).GT.0.AND.K(I1,1).LE.10) PYP=PYP+PYCHGE(K(I1,2))/3D0
+ 130 CONTINUE
+ ELSEIF(I.EQ.0) THEN
+
+C...Direct readout of P matrix.
+ ELSEIF(J.LE.5) THEN
+ PYP=P(I,J)
+
+C...Charge, total momentum, transverse momentum, transverse mass.
+ ELSEIF(J.LE.12) THEN
+ IF(J.EQ.6) PYP=PYCHGE(K(I,2))/3D0
+ IF(J.EQ.7.OR.J.EQ.8) PYP=P(I,1)**2+P(I,2)**2+P(I,3)**2
+ IF(J.EQ.9.OR.J.EQ.10) PYP=P(I,1)**2+P(I,2)**2
+ IF(J.EQ.11.OR.J.EQ.12) PYP=P(I,5)**2+P(I,1)**2+P(I,2)**2
+ IF(J.EQ.8.OR.J.EQ.10.OR.J.EQ.12) PYP=SQRT(PYP)
+
+C...Theta and phi angle in radians or degrees.
+ ELSEIF(J.LE.16) THEN
+ IF(J.LE.14) PYP=PYANGL(P(I,3),SQRT(P(I,1)**2+P(I,2)**2))
+ IF(J.GE.15) PYP=PYANGL(P(I,1),P(I,2))
+ IF(J.EQ.14.OR.J.EQ.16) PYP=PYP*180D0/PARU(1)
+
+C...True rapidity, rapidity with pion mass, pseudorapidity.
+ ELSEIF(J.LE.19) THEN
+ PMR=0D0
+ IF(J.EQ.17) PMR=P(I,5)
+ IF(J.EQ.18) PMR=PYMASS(211)
+ PR=MAX(1D-20,PMR**2+P(I,1)**2+P(I,2)**2)
+ PYP=SIGN(LOG(MIN((SQRT(PR+P(I,3)**2)+ABS(P(I,3)))/SQRT(PR),
+ & 1D20)),P(I,3))
+
+C...Energy and momentum fractions (only to be used in CM frame).
+ ELSEIF(J.LE.25) THEN
+ IF(J.EQ.20) PYP=2D0*SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2)/PARU(21)
+ IF(J.EQ.21) PYP=2D0*P(I,3)/PARU(21)
+ IF(J.EQ.22) PYP=2D0*SQRT(P(I,1)**2+P(I,2)**2)/PARU(21)
+ IF(J.EQ.23) PYP=2D0*P(I,4)/PARU(21)
+ IF(J.EQ.24) PYP=(P(I,4)+P(I,3))/PARU(21)
+ IF(J.EQ.25) PYP=(P(I,4)-P(I,3))/PARU(21)
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSPHE
+C...Performs sphericity tensor analysis to give sphericity,
+C...aplanarity and the related event axes.
+
+ SUBROUTINE PYSPHE(SPH,APL)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local arrays.
+ DIMENSION SM(3,3),SV(3,3)
+
+C...Calculate matrix to be diagonalized.
+ NP=0
+ DO 110 J1=1,3
+ DO 100 J2=J1,3
+ SM(J1,J2)=0D0
+ 100 CONTINUE
+ 110 CONTINUE
+ PS=0D0
+ DO 140 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 140
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 140
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2)).EQ.0)
+ & GOTO 140
+ ENDIF
+ NP=NP+1
+ PA=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ PWT=1D0
+ IF(ABS(PARU(41)-2D0).GT.0.001D0) PWT=
+ & MAX(1D-10,PA)**(PARU(41)-2D0)
+ DO 130 J1=1,3
+ DO 120 J2=J1,3
+ SM(J1,J2)=SM(J1,J2)+PWT*P(I,J1)*P(I,J2)
+ 120 CONTINUE
+ 130 CONTINUE
+ PS=PS+PWT*PA**2
+ 140 CONTINUE
+
+C...Very low multiplicities (0 or 1) not considered.
+ IF(NP.LE.1) THEN
+ CALL PYERRM(8,'(PYSPHE:) too few particles for analysis')
+ SPH=-1D0
+ APL=-1D0
+ RETURN
+ ENDIF
+ DO 160 J1=1,3
+ DO 150 J2=J1,3
+ SM(J1,J2)=SM(J1,J2)/PS
+ 150 CONTINUE
+ 160 CONTINUE
+
+C...Find eigenvalues to matrix (third degree equation).
+ SQ=(SM(1,1)*SM(2,2)+SM(1,1)*SM(3,3)+SM(2,2)*SM(3,3)-
+ &SM(1,2)**2-SM(1,3)**2-SM(2,3)**2)/3D0-1D0/9D0
+ SR=-0.5D0*(SQ+1D0/9D0+SM(1,1)*SM(2,3)**2+SM(2,2)*SM(1,3)**2+
+ &SM(3,3)*SM(1,2)**2-SM(1,1)*SM(2,2)*SM(3,3))+
+ &SM(1,2)*SM(1,3)*SM(2,3)+1D0/27D0
+ SP=COS(ACOS(MAX(MIN(SR/SQRT(-SQ**3),1D0),-1D0))/3D0)
+ P(N+1,4)=1D0/3D0+SQRT(-SQ)*MAX(2D0*SP,SQRT(3D0*(1D0-SP**2))-SP)
+ P(N+3,4)=1D0/3D0+SQRT(-SQ)*MIN(2D0*SP,-SQRT(3D0*(1D0-SP**2))-SP)
+ P(N+2,4)=1D0-P(N+1,4)-P(N+3,4)
+ IF(P(N+2,4).LT.1D-5) THEN
+ CALL PYERRM(8,'(PYSPHE:) all particles back-to-back')
+ SPH=-1D0
+ APL=-1D0
+ RETURN
+ ENDIF
+
+C...Find first and last eigenvector by solving equation system.
+ DO 240 I=1,3,2
+ DO 180 J1=1,3
+ SV(J1,J1)=SM(J1,J1)-P(N+I,4)
+ DO 170 J2=J1+1,3
+ SV(J1,J2)=SM(J1,J2)
+ SV(J2,J1)=SM(J1,J2)
+ 170 CONTINUE
+ 180 CONTINUE
+ SMAX=0D0
+ DO 200 J1=1,3
+ DO 190 J2=1,3
+ IF(ABS(SV(J1,J2)).LE.SMAX) GOTO 190
+ JA=J1
+ JB=J2
+ SMAX=ABS(SV(J1,J2))
+ 190 CONTINUE
+ 200 CONTINUE
+ SMAX=0D0
+ DO 220 J3=JA+1,JA+2
+ J1=J3-3*((J3-1)/3)
+ RL=SV(J1,JB)/SV(JA,JB)
+ DO 210 J2=1,3
+ SV(J1,J2)=SV(J1,J2)-RL*SV(JA,J2)
+ IF(ABS(SV(J1,J2)).LE.SMAX) GOTO 210
+ JC=J1
+ SMAX=ABS(SV(J1,J2))
+ 210 CONTINUE
+ 220 CONTINUE
+ JB1=JB+1-3*(JB/3)
+ JB2=JB+2-3*((JB+1)/3)
+ P(N+I,JB1)=-SV(JC,JB2)
+ P(N+I,JB2)=SV(JC,JB1)
+ P(N+I,JB)=-(SV(JA,JB1)*P(N+I,JB1)+SV(JA,JB2)*P(N+I,JB2))/
+ & SV(JA,JB)
+ PA=SQRT(P(N+I,1)**2+P(N+I,2)**2+P(N+I,3)**2)
+ SGN=(-1D0)**INT(PYR(0)+0.5D0)
+ DO 230 J=1,3
+ P(N+I,J)=SGN*P(N+I,J)/PA
+ 230 CONTINUE
+ 240 CONTINUE
+
+C...Middle axis orthogonal to other two. Fill other codes.
+ SGN=(-1D0)**INT(PYR(0)+0.5D0)
+ P(N+2,1)=SGN*(P(N+1,2)*P(N+3,3)-P(N+1,3)*P(N+3,2))
+ P(N+2,2)=SGN*(P(N+1,3)*P(N+3,1)-P(N+1,1)*P(N+3,3))
+ P(N+2,3)=SGN*(P(N+1,1)*P(N+3,2)-P(N+1,2)*P(N+3,1))
+ DO 260 I=1,3
+ K(N+I,1)=31
+ K(N+I,2)=95
+ K(N+I,3)=I
+ K(N+I,4)=0
+ K(N+I,5)=0
+ P(N+I,5)=0D0
+ DO 250 J=1,5
+ V(I,J)=0D0
+ 250 CONTINUE
+ 260 CONTINUE
+
+C...Calculate sphericity and aplanarity. Select storing option.
+ SPH=1.5D0*(P(N+2,4)+P(N+3,4))
+ APL=1.5D0*P(N+3,4)
+ MSTU(61)=N+1
+ MSTU(62)=NP
+ IF(MSTU(43).LE.1) MSTU(3)=3
+ IF(MSTU(43).GE.2) N=N+3
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTHRU
+C...Performs thrust analysis to give thrust, oblateness
+C...and the related event axes.
+
+ SUBROUTINE PYTHRU(THR,OBL)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local arrays.
+ DIMENSION TDI(3),TPR(3)
+
+C...Take copy of particles that are to be considered in thrust analysis.
+ NP=0
+ PS=0D0
+ DO 100 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 100
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 100
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2)).EQ.0)
+ & GOTO 100
+ ENDIF
+ IF(N+NP+MSTU(44)+15.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYTHRU:) no more memory left in PYJETS')
+ THR=-2D0
+ OBL=-2D0
+ RETURN
+ ENDIF
+ NP=NP+1
+ K(N+NP,1)=23
+ P(N+NP,1)=P(I,1)
+ P(N+NP,2)=P(I,2)
+ P(N+NP,3)=P(I,3)
+ P(N+NP,4)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ P(N+NP,5)=1D0
+ IF(ABS(PARU(42)-1D0).GT.0.001D0) P(N+NP,5)=
+ & P(N+NP,4)**(PARU(42)-1D0)
+ PS=PS+P(N+NP,4)*P(N+NP,5)
+ 100 CONTINUE
+
+C...Very low multiplicities (0 or 1) not considered.
+ IF(NP.LE.1) THEN
+ CALL PYERRM(8,'(PYTHRU:) too few particles for analysis')
+ THR=-1D0
+ OBL=-1D0
+ RETURN
+ ENDIF
+
+C...Loop over thrust and major. T axis along z direction in latter case.
+ DO 320 ILD=1,2
+ IF(ILD.EQ.2) THEN
+ K(N+NP+1,1)=31
+ PHI=PYANGL(P(N+NP+1,1),P(N+NP+1,2))
+ MSTU(33)=1
+ CALL PYROBO(N+1,N+NP+1,0D0,-PHI,0D0,0D0,0D0)
+ THE=PYANGL(P(N+NP+1,3),P(N+NP+1,1))
+ CALL PYROBO(N+1,N+NP+1,-THE,0D0,0D0,0D0,0D0)
+ ENDIF
+
+C...Find and order particles with highest p (pT for major).
+ DO 110 ILF=N+NP+4,N+NP+MSTU(44)+4
+ P(ILF,4)=0D0
+ 110 CONTINUE
+ DO 160 I=N+1,N+NP
+ IF(ILD.EQ.2) P(I,4)=SQRT(P(I,1)**2+P(I,2)**2)
+ DO 130 ILF=N+NP+MSTU(44)+3,N+NP+4,-1
+ IF(P(I,4).LE.P(ILF,4)) GOTO 140
+ DO 120 J=1,5
+ P(ILF+1,J)=P(ILF,J)
+ 120 CONTINUE
+ 130 CONTINUE
+ ILF=N+NP+3
+ 140 DO 150 J=1,5
+ P(ILF+1,J)=P(I,J)
+ 150 CONTINUE
+ 160 CONTINUE
+
+C...Find and order initial axes with highest thrust (major).
+ DO 170 ILG=N+NP+MSTU(44)+5,N+NP+MSTU(44)+15
+ P(ILG,4)=0D0
+ 170 CONTINUE
+ NC=2**(MIN(MSTU(44),NP)-1)
+ DO 250 ILC=1,NC
+ DO 180 J=1,3
+ TDI(J)=0D0
+ 180 CONTINUE
+ DO 200 ILF=1,MIN(MSTU(44),NP)
+ SGN=P(N+NP+ILF+3,5)
+ IF(2**ILF*((ILC+2**(ILF-1)-1)/2**ILF).GE.ILC) SGN=-SGN
+ DO 190 J=1,4-ILD
+ TDI(J)=TDI(J)+SGN*P(N+NP+ILF+3,J)
+ 190 CONTINUE
+ 200 CONTINUE
+ TDS=TDI(1)**2+TDI(2)**2+TDI(3)**2
+ DO 220 ILG=N+NP+MSTU(44)+MIN(ILC,10)+4,N+NP+MSTU(44)+5,-1
+ IF(TDS.LE.P(ILG,4)) GOTO 230
+ DO 210 J=1,4
+ P(ILG+1,J)=P(ILG,J)
+ 210 CONTINUE
+ 220 CONTINUE
+ ILG=N+NP+MSTU(44)+4
+ 230 DO 240 J=1,3
+ P(ILG+1,J)=TDI(J)
+ 240 CONTINUE
+ P(ILG+1,4)=TDS
+ 250 CONTINUE
+
+C...Iterate direction of axis until stable maximum.
+ P(N+NP+ILD,4)=0D0
+ ILG=0
+ 260 ILG=ILG+1
+ THP=0D0
+ 270 THPS=THP
+ DO 280 J=1,3
+ IF(THP.LE.1D-10) TDI(J)=P(N+NP+MSTU(44)+4+ILG,J)
+ IF(THP.GT.1D-10) TDI(J)=TPR(J)
+ TPR(J)=0D0
+ 280 CONTINUE
+ DO 300 I=N+1,N+NP
+ SGN=SIGN(P(I,5),TDI(1)*P(I,1)+TDI(2)*P(I,2)+TDI(3)*P(I,3))
+ DO 290 J=1,4-ILD
+ TPR(J)=TPR(J)+SGN*P(I,J)
+ 290 CONTINUE
+ 300 CONTINUE
+ THP=SQRT(TPR(1)**2+TPR(2)**2+TPR(3)**2)/PS
+ IF(THP.GE.THPS+PARU(48)) GOTO 270
+
+C...Save good axis. Try new initial axis until a number of tries agree.
+ IF(THP.LT.P(N+NP+ILD,4)-PARU(48).AND.ILG.LT.MIN(10,NC)) GOTO 260
+ IF(THP.GT.P(N+NP+ILD,4)+PARU(48)) THEN
+ IAGR=0
+ SGN=(-1D0)**INT(PYR(0)+0.5D0)
+ DO 310 J=1,3
+ P(N+NP+ILD,J)=SGN*TPR(J)/(PS*THP)
+ 310 CONTINUE
+ P(N+NP+ILD,4)=THP
+ P(N+NP+ILD,5)=0D0
+ ENDIF
+ IAGR=IAGR+1
+ IF(IAGR.LT.MSTU(45).AND.ILG.LT.MIN(10,NC)) GOTO 260
+ 320 CONTINUE
+
+C...Find minor axis and value by orthogonality.
+ SGN=(-1D0)**INT(PYR(0)+0.5D0)
+ P(N+NP+3,1)=-SGN*P(N+NP+2,2)
+ P(N+NP+3,2)=SGN*P(N+NP+2,1)
+ P(N+NP+3,3)=0D0
+ THP=0D0
+ DO 330 I=N+1,N+NP
+ THP=THP+P(I,5)*ABS(P(N+NP+3,1)*P(I,1)+P(N+NP+3,2)*P(I,2))
+ 330 CONTINUE
+ P(N+NP+3,4)=THP/PS
+ P(N+NP+3,5)=0D0
+
+C...Fill axis information. Rotate back to original coordinate system.
+ DO 350 ILD=1,3
+ K(N+ILD,1)=31
+ K(N+ILD,2)=96
+ K(N+ILD,3)=ILD
+ K(N+ILD,4)=0
+ K(N+ILD,5)=0
+ DO 340 J=1,5
+ P(N+ILD,J)=P(N+NP+ILD,J)
+ V(N+ILD,J)=0D0
+ 340 CONTINUE
+ 350 CONTINUE
+ CALL PYROBO(N+1,N+3,THE,PHI,0D0,0D0,0D0)
+
+C...Calculate thrust and oblateness. Select storing option.
+ THR=P(N+1,4)
+ OBL=P(N+2,4)-P(N+3,4)
+ MSTU(61)=N+1
+ MSTU(62)=NP
+ IF(MSTU(43).LE.1) MSTU(3)=3
+ IF(MSTU(43).GE.2) N=N+3
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCLUS
+C...Subdivides the particle content of an event into jets/clusters.
+
+ SUBROUTINE PYCLUS(NJET)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local arrays and saved variables.
+ DIMENSION PS(5)
+ SAVE NSAV,NP,PS,PSS,RINIT,NPRE,NREM
+
+C...Functions: distance measure in pT, (pseudo)mass or Durham pT.
+ R2T(I1,I2)=(P(I1,5)*P(I2,5)-P(I1,1)*P(I2,1)-P(I1,2)*P(I2,2)-
+ &P(I1,3)*P(I2,3))*2D0*P(I1,5)*P(I2,5)/(0.0001D0+P(I1,5)+P(I2,5))**2
+ R2M(I1,I2)=2D0*P(I1,4)*P(I2,4)*(1D0-(P(I1,1)*P(I2,1)+P(I1,2)*
+ &P(I2,2)+P(I1,3)*P(I2,3))/(P(I1,5)*P(I2,5)))
+ R2D(I1,I2)=2D0*MIN(P(I1,4),P(I2,4))**2*(1D0-(P(I1,1)*P(I2,1)+
+ &P(I1,2)*P(I2,2)+P(I1,3)*P(I2,3))/(P(I1,5)*P(I2,5)))
+
+C...If first time, reset. If reentering, skip preliminaries.
+ IF(MSTU(48).LE.0) THEN
+ NP=0
+ DO 100 J=1,5
+ PS(J)=0D0
+ 100 CONTINUE
+ PSS=0D0
+ PIMASS=PMAS(PYCOMP(211),1)
+ ELSE
+ NJET=NSAV
+ IF(MSTU(43).GE.2) N=N-NJET
+ DO 110 I=N+1,N+NJET
+ P(I,5)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ 110 CONTINUE
+ IF(MSTU(46).LE.3.OR.MSTU(46).EQ.5) THEN
+ R2ACC=PARU(44)**2
+ ELSE
+ R2ACC=PARU(45)*PS(5)**2
+ ENDIF
+ NLOOP=0
+ GOTO 300
+ ENDIF
+
+C...Find which particles are to be considered in cluster search.
+ DO 140 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 140
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 140
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2)).EQ.0)
+ & GOTO 140
+ ENDIF
+ IF(N+2*NP.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYCLUS:) no more memory left in PYJETS')
+ NJET=-1
+ RETURN
+ ENDIF
+
+C...Take copy of these particles, with space left for jets later on.
+ NP=NP+1
+ K(N+NP,3)=I
+ DO 120 J=1,5
+ P(N+NP,J)=P(I,J)
+ 120 CONTINUE
+ IF(MSTU(42).EQ.0) P(N+NP,5)=0D0
+ IF(MSTU(42).EQ.1.AND.K(I,2).NE.22) P(N+NP,5)=PIMASS
+ P(N+NP,4)=SQRT(P(N+NP,5)**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ P(N+NP,5)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ DO 130 J=1,4
+ PS(J)=PS(J)+P(N+NP,J)
+ 130 CONTINUE
+ PSS=PSS+P(N+NP,5)
+ 140 CONTINUE
+ DO 160 I=N+1,N+NP
+ K(I+NP,3)=K(I,3)
+ DO 150 J=1,5
+ P(I+NP,J)=P(I,J)
+ 150 CONTINUE
+ 160 CONTINUE
+ PS(5)=SQRT(MAX(0D0,PS(4)**2-PS(1)**2-PS(2)**2-PS(3)**2))
+
+C...Very low multiplicities not considered.
+ IF(NP.LT.MSTU(47)) THEN
+ CALL PYERRM(8,'(PYCLUS:) too few particles for analysis')
+ NJET=-1
+ RETURN
+ ENDIF
+
+C...Find precluster configuration. If too few jets, make harder cuts.
+ NLOOP=0
+ IF(MSTU(46).LE.3.OR.MSTU(46).EQ.5) THEN
+ R2ACC=PARU(44)**2
+ ELSE
+ R2ACC=PARU(45)*PS(5)**2
+ ENDIF
+ RINIT=1.25D0*PARU(43)
+ IF(NP.LE.MSTU(47)+2) RINIT=0D0
+ 170 RINIT=0.8D0*RINIT
+ NPRE=0
+ NREM=NP
+ DO 180 I=N+NP+1,N+2*NP
+ K(I,4)=0
+ 180 CONTINUE
+
+C...Sum up small momentum region. Jet if enough absolute momentum.
+ IF(MSTU(46).LE.2) THEN
+ DO 190 J=1,4
+ P(N+1,J)=0D0
+ 190 CONTINUE
+ DO 210 I=N+NP+1,N+2*NP
+ IF(P(I,5).GT.2D0*RINIT) GOTO 210
+ NREM=NREM-1
+ K(I,4)=1
+ DO 200 J=1,4
+ P(N+1,J)=P(N+1,J)+P(I,J)
+ 200 CONTINUE
+ 210 CONTINUE
+ P(N+1,5)=SQRT(P(N+1,1)**2+P(N+1,2)**2+P(N+1,3)**2)
+ IF(P(N+1,5).GT.2D0*RINIT) NPRE=1
+ IF(RINIT.GE.0.2D0*PARU(43).AND.NPRE+NREM.LT.MSTU(47)) GOTO 170
+ IF(NREM.EQ.0) GOTO 170
+ ENDIF
+
+C...Find fastest remaining particle.
+ 220 NPRE=NPRE+1
+ PMAX=0D0
+ DO 230 I=N+NP+1,N+2*NP
+ IF(K(I,4).NE.0.OR.P(I,5).LE.PMAX) GOTO 230
+ IMAX=I
+ PMAX=P(I,5)
+ 230 CONTINUE
+ DO 240 J=1,5
+ P(N+NPRE,J)=P(IMAX,J)
+ 240 CONTINUE
+ NREM=NREM-1
+ K(IMAX,4)=NPRE
+
+C...Sum up precluster around it according to pT separation.
+ IF(MSTU(46).LE.2) THEN
+ DO 260 I=N+NP+1,N+2*NP
+ IF(K(I,4).NE.0) GOTO 260
+ R2=R2T(I,IMAX)
+ IF(R2.GT.RINIT**2) GOTO 260
+ NREM=NREM-1
+ K(I,4)=NPRE
+ DO 250 J=1,4
+ P(N+NPRE,J)=P(N+NPRE,J)+P(I,J)
+ 250 CONTINUE
+ 260 CONTINUE
+ P(N+NPRE,5)=SQRT(P(N+NPRE,1)**2+P(N+NPRE,2)**2+P(N+NPRE,3)**2)
+
+C...Sum up precluster around it according to mass or
+C...Durham pT separation.
+ ELSE
+ 270 IMIN=0
+ R2MIN=RINIT**2
+ DO 280 I=N+NP+1,N+2*NP
+ IF(K(I,4).NE.0) GOTO 280
+ IF(MSTU(46).LE.4) THEN
+ R2=R2M(I,N+NPRE)
+ ELSE
+ R2=R2D(I,N+NPRE)
+ ENDIF
+ IF(R2.GE.R2MIN) GOTO 280
+ IMIN=I
+ R2MIN=R2
+ 280 CONTINUE
+ IF(IMIN.NE.0) THEN
+ DO 290 J=1,4
+ P(N+NPRE,J)=P(N+NPRE,J)+P(IMIN,J)
+ 290 CONTINUE
+ P(N+NPRE,5)=SQRT(P(N+NPRE,1)**2+P(N+NPRE,2)**2+P(N+NPRE,3)**2)
+ NREM=NREM-1
+ K(IMIN,4)=NPRE
+ GOTO 270
+ ENDIF
+ ENDIF
+
+C...Check if more preclusters to be found. Start over if too few.
+ IF(RINIT.GE.0.2D0*PARU(43).AND.NPRE+NREM.LT.MSTU(47)) GOTO 170
+ IF(NREM.GT.0) GOTO 220
+ NJET=NPRE
+
+C...Reassign all particles to nearest jet. Sum up new jet momenta.
+ 300 TSAV=0D0
+ PSJT=0D0
+ 310 IF(MSTU(46).LE.1) THEN
+ DO 330 I=N+1,N+NJET
+ DO 320 J=1,4
+ V(I,J)=0D0
+ 320 CONTINUE
+ 330 CONTINUE
+ DO 360 I=N+NP+1,N+2*NP
+ R2MIN=PSS**2
+ DO 340 IJET=N+1,N+NJET
+ IF(P(IJET,5).LT.RINIT) GOTO 340
+ R2=R2T(I,IJET)
+ IF(R2.GE.R2MIN) GOTO 340
+ IMIN=IJET
+ R2MIN=R2
+ 340 CONTINUE
+ K(I,4)=IMIN-N
+ DO 350 J=1,4
+ V(IMIN,J)=V(IMIN,J)+P(I,J)
+ 350 CONTINUE
+ 360 CONTINUE
+ PSJT=0D0
+ DO 380 I=N+1,N+NJET
+ DO 370 J=1,4
+ P(I,J)=V(I,J)
+ 370 CONTINUE
+ P(I,5)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ PSJT=PSJT+P(I,5)
+ 380 CONTINUE
+ ENDIF
+
+C...Find two closest jets.
+ R2MIN=2D0*MAX(R2ACC,PS(5)**2)
+ DO 400 ITRY1=N+1,N+NJET-1
+ DO 390 ITRY2=ITRY1+1,N+NJET
+ IF(MSTU(46).LE.2) THEN
+ R2=R2T(ITRY1,ITRY2)
+ ELSEIF(MSTU(46).LE.4) THEN
+ R2=R2M(ITRY1,ITRY2)
+ ELSE
+ R2=R2D(ITRY1,ITRY2)
+ ENDIF
+ IF(R2.GE.R2MIN) GOTO 390
+ IMIN1=ITRY1
+ IMIN2=ITRY2
+ R2MIN=R2
+ 390 CONTINUE
+ 400 CONTINUE
+
+C...If allowed, join two closest jets and start over.
+ IF(NJET.GT.MSTU(47).AND.R2MIN.LT.R2ACC) THEN
+ IREC=MIN(IMIN1,IMIN2)
+ IDEL=MAX(IMIN1,IMIN2)
+ DO 410 J=1,4
+ P(IREC,J)=P(IMIN1,J)+P(IMIN2,J)
+ 410 CONTINUE
+ P(IREC,5)=SQRT(P(IREC,1)**2+P(IREC,2)**2+P(IREC,3)**2)
+ DO 430 I=IDEL+1,N+NJET
+ DO 420 J=1,5
+ P(I-1,J)=P(I,J)
+ 420 CONTINUE
+ 430 CONTINUE
+ IF(MSTU(46).GE.2) THEN
+ DO 440 I=N+NP+1,N+2*NP
+ IORI=N+K(I,4)
+ IF(IORI.EQ.IDEL) K(I,4)=IREC-N
+ IF(IORI.GT.IDEL) K(I,4)=K(I,4)-1
+ 440 CONTINUE
+ ENDIF
+ NJET=NJET-1
+ GOTO 300
+
+C...Divide up broad jet if empty cluster in list of final ones.
+ ELSEIF(NJET.EQ.MSTU(47).AND.MSTU(46).LE.1.AND.NLOOP.LE.2) THEN
+ DO 450 I=N+1,N+NJET
+ K(I,5)=0
+ 450 CONTINUE
+ DO 460 I=N+NP+1,N+2*NP
+ K(N+K(I,4),5)=K(N+K(I,4),5)+1
+ 460 CONTINUE
+ IEMP=0
+ DO 470 I=N+1,N+NJET
+ IF(K(I,5).EQ.0) IEMP=I
+ 470 CONTINUE
+ IF(IEMP.NE.0) THEN
+ NLOOP=NLOOP+1
+ ISPL=0
+ R2MAX=0D0
+ DO 480 I=N+NP+1,N+2*NP
+ IF(K(N+K(I,4),5).LE.1.OR.P(I,5).LT.RINIT) GOTO 480
+ IJET=N+K(I,4)
+ R2=R2T(I,IJET)
+ IF(R2.LE.R2MAX) GOTO 480
+ ISPL=I
+ R2MAX=R2
+ 480 CONTINUE
+ IF(ISPL.NE.0) THEN
+ IJET=N+K(ISPL,4)
+ DO 490 J=1,4
+ P(IEMP,J)=P(ISPL,J)
+ P(IJET,J)=P(IJET,J)-P(ISPL,J)
+ 490 CONTINUE
+ P(IEMP,5)=P(ISPL,5)
+ P(IJET,5)=SQRT(P(IJET,1)**2+P(IJET,2)**2+P(IJET,3)**2)
+ IF(NLOOP.LE.2) GOTO 300
+ ENDIF
+ ENDIF
+ ENDIF
+
+C...If generalized thrust has not yet converged, continue iteration.
+ IF(MSTU(46).LE.1.AND.NLOOP.LE.2.AND.PSJT/PSS.GT.TSAV+PARU(48))
+ &THEN
+ TSAV=PSJT/PSS
+ GOTO 310
+ ENDIF
+
+C...Reorder jets according to energy.
+ DO 510 I=N+1,N+NJET
+ DO 500 J=1,5
+ V(I,J)=P(I,J)
+ 500 CONTINUE
+ 510 CONTINUE
+ DO 540 INEW=N+1,N+NJET
+ PEMAX=0D0
+ DO 520 ITRY=N+1,N+NJET
+ IF(V(ITRY,4).LE.PEMAX) GOTO 520
+ IMAX=ITRY
+ PEMAX=V(ITRY,4)
+ 520 CONTINUE
+ K(INEW,1)=31
+ K(INEW,2)=97
+ K(INEW,3)=INEW-N
+ K(INEW,4)=0
+ DO 530 J=1,5
+ P(INEW,J)=V(IMAX,J)
+ 530 CONTINUE
+ V(IMAX,4)=-1D0
+ K(IMAX,5)=INEW
+ 540 CONTINUE
+
+C...Clean up particle-jet assignments and jet information.
+ DO 550 I=N+NP+1,N+2*NP
+ IORI=K(N+K(I,4),5)
+ K(I,4)=IORI-N
+ IF(K(K(I,3),1).NE.3) K(K(I,3),4)=IORI-N
+ K(IORI,4)=K(IORI,4)+1
+ 550 CONTINUE
+ IEMP=0
+ PSJT=0D0
+ DO 570 I=N+1,N+NJET
+ K(I,5)=0
+ PSJT=PSJT+P(I,5)
+ P(I,5)=SQRT(MAX(P(I,4)**2-P(I,5)**2,0D0))
+ DO 560 J=1,5
+ V(I,J)=0D0
+ 560 CONTINUE
+ IF(K(I,4).EQ.0) IEMP=I
+ 570 CONTINUE
+
+C...Select storing option. Output variables. Check for failure.
+ MSTU(61)=N+1
+ MSTU(62)=NP
+ MSTU(63)=NPRE
+ PARU(61)=PS(5)
+ PARU(62)=PSJT/PSS
+ PARU(63)=SQRT(R2MIN)
+ IF(NJET.LE.1) PARU(63)=0D0
+ IF(IEMP.NE.0) THEN
+ CALL PYERRM(8,'(PYCLUS:) failed to reconstruct as requested')
+ NJET=-1
+ RETURN
+ ENDIF
+ IF(MSTU(43).LE.1) MSTU(3)=MAX(0,NJET)
+ IF(MSTU(43).GE.2) N=N+MAX(0,NJET)
+ NSAV=NJET
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYCELL
+C...Provides a simple way of jet finding in eta-phi-ET coordinates,
+C...as used for calorimeters at hadron colliders.
+
+ SUBROUTINE PYCELL(NJET)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Loop over all particles. Find cell that was hit by given particle.
+ PTLRAT=1D0/SINH(PARU(51))**2
+ NP=0
+ NC=N
+ DO 110 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 110
+ IF(P(I,1)**2+P(I,2)**2.LE.PTLRAT*P(I,3)**2) GOTO 110
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 110
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2)).EQ.0)
+ & GOTO 110
+ ENDIF
+ NP=NP+1
+ PT=SQRT(P(I,1)**2+P(I,2)**2)
+ ETA=SIGN(LOG((SQRT(PT**2+P(I,3)**2)+ABS(P(I,3)))/PT),P(I,3))
+ IETA=MAX(1,MIN(MSTU(51),1+INT(MSTU(51)*0.5D0*
+ & (ETA/PARU(51)+1D0))))
+ PHI=PYANGL(P(I,1),P(I,2))
+ IPHI=MAX(1,MIN(MSTU(52),1+INT(MSTU(52)*0.5D0*
+ & (PHI/PARU(1)+1D0))))
+ IETPH=MSTU(52)*IETA+IPHI
+
+C...Add to cell already hit, or book new cell.
+ DO 100 IC=N+1,NC
+ IF(IETPH.EQ.K(IC,3)) THEN
+ K(IC,4)=K(IC,4)+1
+ P(IC,5)=P(IC,5)+PT
+ GOTO 110
+ ENDIF
+ 100 CONTINUE
+ IF(NC.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYCELL:) no more memory left in PYJETS')
+ NJET=-2
+ RETURN
+ ENDIF
+ NC=NC+1
+ K(NC,3)=IETPH
+ K(NC,4)=1
+ K(NC,5)=2
+ P(NC,1)=(PARU(51)/MSTU(51))*(2*IETA-1-MSTU(51))
+ P(NC,2)=(PARU(1)/MSTU(52))*(2*IPHI-1-MSTU(52))
+ P(NC,5)=PT
+ 110 CONTINUE
+
+C...Smear true bin content by calorimeter resolution.
+ IF(MSTU(53).GE.1) THEN
+ DO 130 IC=N+1,NC
+ PEI=P(IC,5)
+ IF(MSTU(53).EQ.2) PEI=P(IC,5)*COSH(P(IC,1))
+ 120 PEF=PEI+PARU(55)*SQRT(-2D0*LOG(MAX(1D-10,PYR(0)))*PEI)*
+ & COS(PARU(2)*PYR(0))
+ IF(PEF.LT.0D0.OR.PEF.GT.PARU(56)*PEI) GOTO 120
+ P(IC,5)=PEF
+ IF(MSTU(53).EQ.2) P(IC,5)=PEF/COSH(P(IC,1))
+ 130 CONTINUE
+ ENDIF
+
+C...Remove cells below threshold.
+ IF(PARU(58).GT.0D0) THEN
+ NCC=NC
+ NC=N
+ DO 140 IC=N+1,NCC
+ IF(P(IC,5).GT.PARU(58)) THEN
+ NC=NC+1
+ K(NC,3)=K(IC,3)
+ K(NC,4)=K(IC,4)
+ K(NC,5)=K(IC,5)
+ P(NC,1)=P(IC,1)
+ P(NC,2)=P(IC,2)
+ P(NC,5)=P(IC,5)
+ ENDIF
+ 140 CONTINUE
+ ENDIF
+
+C...Find initiator cell: the one with highest pT of not yet used ones.
+ NJ=NC
+ 150 ETMAX=0D0
+ DO 160 IC=N+1,NC
+ IF(K(IC,5).NE.2) GOTO 160
+ IF(P(IC,5).LE.ETMAX) GOTO 160
+ ICMAX=IC
+ ETA=P(IC,1)
+ PHI=P(IC,2)
+ ETMAX=P(IC,5)
+ 160 CONTINUE
+ IF(ETMAX.LT.PARU(52)) GOTO 220
+ IF(NJ.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYCELL:) no more memory left in PYJETS')
+ NJET=-2
+ RETURN
+ ENDIF
+ K(ICMAX,5)=1
+ NJ=NJ+1
+ K(NJ,4)=0
+ K(NJ,5)=1
+ P(NJ,1)=ETA
+ P(NJ,2)=PHI
+ P(NJ,3)=0D0
+ P(NJ,4)=0D0
+ P(NJ,5)=0D0
+
+C...Sum up unused cells within required distance of initiator.
+ DO 170 IC=N+1,NC
+ IF(K(IC,5).EQ.0) GOTO 170
+ IF(ABS(P(IC,1)-ETA).GT.PARU(54)) GOTO 170
+ DPHIA=ABS(P(IC,2)-PHI)
+ IF(DPHIA.GT.PARU(54).AND.DPHIA.LT.PARU(2)-PARU(54)) GOTO 170
+ PHIC=P(IC,2)
+ IF(DPHIA.GT.PARU(1)) PHIC=PHIC+SIGN(PARU(2),PHI)
+ IF((P(IC,1)-ETA)**2+(PHIC-PHI)**2.GT.PARU(54)**2) GOTO 170
+ K(IC,5)=-K(IC,5)
+ K(NJ,4)=K(NJ,4)+K(IC,4)
+ P(NJ,3)=P(NJ,3)+P(IC,5)*P(IC,1)
+ P(NJ,4)=P(NJ,4)+P(IC,5)*PHIC
+ P(NJ,5)=P(NJ,5)+P(IC,5)
+ 170 CONTINUE
+
+C...Reject cluster below minimum ET, else accept.
+ IF(P(NJ,5).LT.PARU(53)) THEN
+ NJ=NJ-1
+ DO 180 IC=N+1,NC
+ IF(K(IC,5).LT.0) K(IC,5)=-K(IC,5)
+ 180 CONTINUE
+ ELSEIF(MSTU(54).LE.2) THEN
+ P(NJ,3)=P(NJ,3)/P(NJ,5)
+ P(NJ,4)=P(NJ,4)/P(NJ,5)
+ IF(ABS(P(NJ,4)).GT.PARU(1)) P(NJ,4)=P(NJ,4)-SIGN(PARU(2),
+ & P(NJ,4))
+ DO 190 IC=N+1,NC
+ IF(K(IC,5).LT.0) K(IC,5)=0
+ 190 CONTINUE
+ ELSE
+ DO 200 J=1,4
+ P(NJ,J)=0D0
+ 200 CONTINUE
+ DO 210 IC=N+1,NC
+ IF(K(IC,5).GE.0) GOTO 210
+ P(NJ,1)=P(NJ,1)+P(IC,5)*COS(P(IC,2))
+ P(NJ,2)=P(NJ,2)+P(IC,5)*SIN(P(IC,2))
+ P(NJ,3)=P(NJ,3)+P(IC,5)*SINH(P(IC,1))
+ P(NJ,4)=P(NJ,4)+P(IC,5)*COSH(P(IC,1))
+ K(IC,5)=0
+ 210 CONTINUE
+ ENDIF
+ GOTO 150
+
+C...Arrange clusters in falling ET sequence.
+ 220 DO 250 I=1,NJ-NC
+ ETMAX=0D0
+ DO 230 IJ=NC+1,NJ
+ IF(K(IJ,5).EQ.0) GOTO 230
+ IF(P(IJ,5).LT.ETMAX) GOTO 230
+ IJMAX=IJ
+ ETMAX=P(IJ,5)
+ 230 CONTINUE
+ K(IJMAX,5)=0
+ K(N+I,1)=31
+ K(N+I,2)=98
+ K(N+I,3)=I
+ K(N+I,4)=K(IJMAX,4)
+ K(N+I,5)=0
+ DO 240 J=1,5
+ P(N+I,J)=P(IJMAX,J)
+ V(N+I,J)=0D0
+ 240 CONTINUE
+ 250 CONTINUE
+ NJET=NJ-NC
+
+C...Convert to massless or massive four-vectors.
+ IF(MSTU(54).EQ.2) THEN
+ DO 260 I=N+1,N+NJET
+ ETA=P(I,3)
+ P(I,1)=P(I,5)*COS(P(I,4))
+ P(I,2)=P(I,5)*SIN(P(I,4))
+ P(I,3)=P(I,5)*SINH(ETA)
+ P(I,4)=P(I,5)*COSH(ETA)
+ P(I,5)=0D0
+ 260 CONTINUE
+ ELSEIF(MSTU(54).GE.3) THEN
+ DO 270 I=N+1,N+NJET
+ P(I,5)=SQRT(MAX(0D0,P(I,4)**2-P(I,1)**2-P(I,2)**2-P(I,3)**2))
+ 270 CONTINUE
+ ENDIF
+
+C...Information about storage.
+ MSTU(61)=N+1
+ MSTU(62)=NP
+ MSTU(63)=NC-N
+ IF(MSTU(43).LE.1) MSTU(3)=MAX(0,NJET)
+ IF(MSTU(43).GE.2) N=N+MAX(0,NJET)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYJMAS
+C...Determines, approximately, the two jet masses that minimize
+C...the sum m_H^2 + m_L^2, a la Clavelli and Wyler.
+
+ SUBROUTINE PYJMAS(PMH,PML)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+C...Local arrays.
+ DIMENSION SM(3,3),SAX(3),PS(3,5)
+
+C...Reset.
+ NP=0
+ DO 120 J1=1,3
+ DO 100 J2=J1,3
+ SM(J1,J2)=0D0
+ 100 CONTINUE
+ DO 110 J2=1,4
+ PS(J1,J2)=0D0
+ 110 CONTINUE
+ 120 CONTINUE
+ PSS=0D0
+ PIMASS=PMAS(PYCOMP(211),1)
+
+C...Take copy of particles that are to be considered in mass analysis.
+ DO 170 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 170
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 170
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2)).EQ.0)
+ & GOTO 170
+ ENDIF
+ IF(N+NP+1.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYJMAS:) no more memory left in PYJETS')
+ PMH=-2D0
+ PML=-2D0
+ RETURN
+ ENDIF
+ NP=NP+1
+ DO 130 J=1,5
+ P(N+NP,J)=P(I,J)
+ 130 CONTINUE
+ IF(MSTU(42).EQ.0) P(N+NP,5)=0D0
+ IF(MSTU(42).EQ.1.AND.K(I,2).NE.22) P(N+NP,5)=PIMASS
+ P(N+NP,4)=SQRT(P(N+NP,5)**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+
+C...Fill information in sphericity tensor and total momentum vector.
+ DO 150 J1=1,3
+ DO 140 J2=J1,3
+ SM(J1,J2)=SM(J1,J2)+P(I,J1)*P(I,J2)
+ 140 CONTINUE
+ 150 CONTINUE
+ PSS=PSS+(P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ DO 160 J=1,4
+ PS(3,J)=PS(3,J)+P(N+NP,J)
+ 160 CONTINUE
+ 170 CONTINUE
+
+C...Very low multiplicities (0 or 1) not considered.
+ IF(NP.LE.1) THEN
+ CALL PYERRM(8,'(PYJMAS:) too few particles for analysis')
+ PMH=-1D0
+ PML=-1D0
+ RETURN
+ ENDIF
+ PARU(61)=SQRT(MAX(0D0,PS(3,4)**2-PS(3,1)**2-PS(3,2)**2-
+ &PS(3,3)**2))
+
+C...Find largest eigenvalue to matrix (third degree equation).
+ DO 190 J1=1,3
+ DO 180 J2=J1,3
+ SM(J1,J2)=SM(J1,J2)/PSS
+ 180 CONTINUE
+ 190 CONTINUE
+ SQ=(SM(1,1)*SM(2,2)+SM(1,1)*SM(3,3)+SM(2,2)*SM(3,3)-
+ &SM(1,2)**2-SM(1,3)**2-SM(2,3)**2)/3D0-1D0/9D0
+ SR=-0.5D0*(SQ+1D0/9D0+SM(1,1)*SM(2,3)**2+SM(2,2)*SM(1,3)**2+
+ &SM(3,3)*SM(1,2)**2-SM(1,1)*SM(2,2)*SM(3,3))+
+ &SM(1,2)*SM(1,3)*SM(2,3)+1D0/27D0
+ SP=COS(ACOS(MAX(MIN(SR/SQRT(-SQ**3),1D0),-1D0))/3D0)
+ SMA=1D0/3D0+SQRT(-SQ)*MAX(2D0*SP,SQRT(3D0*(1D0-SP**2))-SP)
+
+C...Find largest eigenvector by solving equation system.
+ DO 210 J1=1,3
+ SM(J1,J1)=SM(J1,J1)-SMA
+ DO 200 J2=J1+1,3
+ SM(J2,J1)=SM(J1,J2)
+ 200 CONTINUE
+ 210 CONTINUE
+ SMAX=0D0
+ DO 230 J1=1,3
+ DO 220 J2=1,3
+ IF(ABS(SM(J1,J2)).LE.SMAX) GOTO 220
+ JA=J1
+ JB=J2
+ SMAX=ABS(SM(J1,J2))
+ 220 CONTINUE
+ 230 CONTINUE
+ SMAX=0D0
+ DO 250 J3=JA+1,JA+2
+ J1=J3-3*((J3-1)/3)
+ RL=SM(J1,JB)/SM(JA,JB)
+ DO 240 J2=1,3
+ SM(J1,J2)=SM(J1,J2)-RL*SM(JA,J2)
+ IF(ABS(SM(J1,J2)).LE.SMAX) GOTO 240
+ JC=J1
+ SMAX=ABS(SM(J1,J2))
+ 240 CONTINUE
+ 250 CONTINUE
+ JB1=JB+1-3*(JB/3)
+ JB2=JB+2-3*((JB+1)/3)
+ SAX(JB1)=-SM(JC,JB2)
+ SAX(JB2)=SM(JC,JB1)
+ SAX(JB)=-(SM(JA,JB1)*SAX(JB1)+SM(JA,JB2)*SAX(JB2))/SM(JA,JB)
+
+C...Divide particles into two initial clusters by hemisphere.
+ DO 270 I=N+1,N+NP
+ PSAX=P(I,1)*SAX(1)+P(I,2)*SAX(2)+P(I,3)*SAX(3)
+ IS=1
+ IF(PSAX.LT.0D0) IS=2
+ K(I,3)=IS
+ DO 260 J=1,4
+ PS(IS,J)=PS(IS,J)+P(I,J)
+ 260 CONTINUE
+ 270 CONTINUE
+ PMS=MAX(1D-10,PS(1,4)**2-PS(1,1)**2-PS(1,2)**2-PS(1,3)**2)+
+ &MAX(1D-10,PS(2,4)**2-PS(2,1)**2-PS(2,2)**2-PS(2,3)**2)
+
+C...Reassign one particle at a time; find maximum decrease of m^2 sum.
+ 280 PMD=0D0
+ IM=0
+ DO 290 J=1,4
+ PS(3,J)=PS(1,J)-PS(2,J)
+ 290 CONTINUE
+ DO 300 I=N+1,N+NP
+ PPS=P(I,4)*PS(3,4)-P(I,1)*PS(3,1)-P(I,2)*PS(3,2)-P(I,3)*PS(3,3)
+ IF(K(I,3).EQ.1) PMDI=2D0*(P(I,5)**2-PPS)
+ IF(K(I,3).EQ.2) PMDI=2D0*(P(I,5)**2+PPS)
+ IF(PMDI.LT.PMD) THEN
+ PMD=PMDI
+ IM=I
+ ENDIF
+ 300 CONTINUE
+
+C...Loop back if significant reduction in sum of m^2.
+ IF(PMD.LT.-PARU(48)*PMS) THEN
+ PMS=PMS+PMD
+ IS=K(IM,3)
+ DO 310 J=1,4
+ PS(IS,J)=PS(IS,J)-P(IM,J)
+ PS(3-IS,J)=PS(3-IS,J)+P(IM,J)
+ 310 CONTINUE
+ K(IM,3)=3-IS
+ GOTO 280
+ ENDIF
+
+C...Final masses and output.
+ MSTU(61)=N+1
+ MSTU(62)=NP
+ PS(1,5)=SQRT(MAX(0D0,PS(1,4)**2-PS(1,1)**2-PS(1,2)**2-PS(1,3)**2))
+ PS(2,5)=SQRT(MAX(0D0,PS(2,4)**2-PS(2,1)**2-PS(2,2)**2-PS(2,3)**2))
+ PMH=MAX(PS(1,5),PS(2,5))
+ PML=MIN(PS(1,5),PS(2,5))
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYFOWO
+C...Calculates the first few Fox-Wolfram moments.
+
+ SUBROUTINE PYFOWO(H10,H20,H30,H40)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Copy momenta for particles and calculate H0.
+ NP=0
+ H0=0D0
+ HD=0D0
+ DO 110 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 110
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 110
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.PYCHGE(K(I,2)).EQ.0)
+ & GOTO 110
+ ENDIF
+ IF(N+NP.GE.MSTU(4)-MSTU(32)-5) THEN
+ CALL PYERRM(11,'(PYFOWO:) no more memory left in PYJETS')
+ H10=-1D0
+ H20=-1D0
+ H30=-1D0
+ H40=-1D0
+ RETURN
+ ENDIF
+ NP=NP+1
+ DO 100 J=1,3
+ P(N+NP,J)=P(I,J)
+ 100 CONTINUE
+ P(N+NP,4)=SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ H0=H0+P(N+NP,4)
+ HD=HD+P(N+NP,4)**2
+ 110 CONTINUE
+ H0=H0**2
+
+C...Very low multiplicities (0 or 1) not considered.
+ IF(NP.LE.1) THEN
+ CALL PYERRM(8,'(PYFOWO:) too few particles for analysis')
+ H10=-1D0
+ H20=-1D0
+ H30=-1D0
+ H40=-1D0
+ RETURN
+ ENDIF
+
+C...Calculate H1 - H4.
+ H10=0D0
+ H20=0D0
+ H30=0D0
+ H40=0D0
+ DO 130 I1=N+1,N+NP
+ DO 120 I2=I1+1,N+NP
+ CTHE=(P(I1,1)*P(I2,1)+P(I1,2)*P(I2,2)+P(I1,3)*P(I2,3))/
+ & (P(I1,4)*P(I2,4))
+ H10=H10+P(I1,4)*P(I2,4)*CTHE
+ H20=H20+P(I1,4)*P(I2,4)*(1.5D0*CTHE**2-0.5D0)
+ H30=H30+P(I1,4)*P(I2,4)*(2.5D0*CTHE**3-1.5D0*CTHE)
+ H40=H40+P(I1,4)*P(I2,4)*(4.375D0*CTHE**4-3.75D0*CTHE**2+
+ & 0.375D0)
+ 120 CONTINUE
+ 130 CONTINUE
+
+C...Calculate H1/H0 - H4/H0. Output.
+ MSTU(61)=N+1
+ MSTU(62)=NP
+ H10=(HD+2D0*H10)/H0
+ H20=(HD+2D0*H20)/H0
+ H30=(HD+2D0*H30)/H0
+ H40=(HD+2D0*H40)/H0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTABU
+C...Evaluates various properties of an event, with statistics
+C...accumulated during the course of the run and
+C...printed at the end.
+
+ SUBROUTINE PYTABU(MTABU)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Parameter statement to help give large particle numbers.
+ PARAMETER (KSUSY1=1000000,KSUSY2=2000000,KTECHN=3000000,
+ &KEXCIT=4000000,KDIMEN=5000000)
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/,/PYDAT3/
+C...Local arrays, character variables, saved variables and data.
+ DIMENSION KFIS(100,2),NPIS(100,0:10),KFFS(400),NPFS(400,4),
+ &FEVFM(10,4),FM1FM(3,10,4),FM2FM(3,10,4),FMOMA(4),FMOMS(4),
+ &FEVEE(50),FE1EC(50),FE2EC(50),FE1EA(25),FE2EA(25),
+ &KFDM(8),KFDC(200,0:8),NPDC(200)
+ SAVE NEVIS,NKFIS,KFIS,NPIS,NEVFS,NPRFS,NFIFS,NCHFS,NKFFS,
+ &KFFS,NPFS,NEVFM,NMUFM,FM1FM,FM2FM,NEVEE,FE1EC,FE2EC,FE1EA,
+ &FE2EA,NEVDC,NKFDC,NREDC,KFDC,NPDC
+ CHARACTER CHAU*16,CHIS(2)*12,CHDC(8)*12
+ DATA NEVIS/0/,NKFIS/0/,NEVFS/0/,NPRFS/0/,NFIFS/0/,NCHFS/0/,
+ &NKFFS/0/,NEVFM/0/,NMUFM/0/,FM1FM/120*0D0/,FM2FM/120*0D0/,
+ &NEVEE/0/,FE1EC/50*0D0/,FE2EC/50*0D0/,FE1EA/25*0D0/,FE2EA/25*0D0/,
+ &NEVDC/0/,NKFDC/0/,NREDC/0/
+
+C...Reset statistics on initial parton state.
+ IF(MTABU.EQ.10) THEN
+ NEVIS=0
+ NKFIS=0
+
+C...Identify and order flavour content of initial state.
+ ELSEIF(MTABU.EQ.11) THEN
+ NEVIS=NEVIS+1
+ KFM1=2*IABS(MSTU(161))
+ IF(MSTU(161).GT.0) KFM1=KFM1-1
+ KFM2=2*IABS(MSTU(162))
+ IF(MSTU(162).GT.0) KFM2=KFM2-1
+ KFMN=MIN(KFM1,KFM2)
+ KFMX=MAX(KFM1,KFM2)
+ DO 100 I=1,NKFIS
+ IF(KFMN.EQ.KFIS(I,1).AND.KFMX.EQ.KFIS(I,2)) THEN
+ IKFIS=-I
+ GOTO 110
+ ELSEIF(KFMN.LT.KFIS(I,1).OR.(KFMN.EQ.KFIS(I,1).AND.
+ & KFMX.LT.KFIS(I,2))) THEN
+ IKFIS=I
+ GOTO 110
+ ENDIF
+ 100 CONTINUE
+ IKFIS=NKFIS+1
+ 110 IF(IKFIS.LT.0) THEN
+ IKFIS=-IKFIS
+ ELSE
+ IF(NKFIS.GE.100) RETURN
+ DO 130 I=NKFIS,IKFIS,-1
+ KFIS(I+1,1)=KFIS(I,1)
+ KFIS(I+1,2)=KFIS(I,2)
+ DO 120 J=0,10
+ NPIS(I+1,J)=NPIS(I,J)
+ 120 CONTINUE
+ 130 CONTINUE
+ NKFIS=NKFIS+1
+ KFIS(IKFIS,1)=KFMN
+ KFIS(IKFIS,2)=KFMX
+ DO 140 J=0,10
+ NPIS(IKFIS,J)=0
+ 140 CONTINUE
+ ENDIF
+ NPIS(IKFIS,0)=NPIS(IKFIS,0)+1
+
+C...Count number of partons in initial state.
+ NP=0
+ DO 160 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.12) THEN
+ ELSEIF(IABS(K(I,2)).GT.80.AND.IABS(K(I,2)).LE.100) THEN
+ ELSEIF(IABS(K(I,2)).GT.100.AND.MOD(IABS(K(I,2))/10,10).NE.0)
+ & THEN
+ ELSE
+ IM=I
+ 150 IM=K(IM,3)
+ IF(IM.LE.0.OR.IM.GT.N) THEN
+ NP=NP+1
+ ELSEIF(K(IM,1).LE.0.OR.K(IM,1).GT.20) THEN
+ NP=NP+1
+ ELSEIF(IABS(K(IM,2)).GT.80.AND.IABS(K(IM,2)).LE.100) THEN
+ ELSEIF(IABS(K(IM,2)).GT.100.AND.MOD(IABS(K(IM,2))/10,10)
+ & .NE.0) THEN
+ ELSE
+ GOTO 150
+ ENDIF
+ ENDIF
+ 160 CONTINUE
+ NPCO=MAX(NP,1)
+ IF(NP.GE.6) NPCO=6
+ IF(NP.GE.8) NPCO=7
+ IF(NP.GE.11) NPCO=8
+ IF(NP.GE.16) NPCO=9
+ IF(NP.GE.26) NPCO=10
+ NPIS(IKFIS,NPCO)=NPIS(IKFIS,NPCO)+1
+ MSTU(62)=NP
+
+C...Write statistics on initial parton state.
+ ELSEIF(MTABU.EQ.12) THEN
+ FAC=1D0/MAX(1,NEVIS)
+ WRITE(MSTU(11),5000) NEVIS
+ DO 170 I=1,NKFIS
+ KFMN=KFIS(I,1)
+ IF(KFMN.EQ.0) KFMN=KFIS(I,2)
+ KFM1=(KFMN+1)/2
+ IF(2*KFM1.EQ.KFMN) KFM1=-KFM1
+ CALL PYNAME(KFM1,CHAU)
+ CHIS(1)=CHAU(1:12)
+ IF(CHAU(13:13).NE.' ') CHIS(1)(12:12)='?'
+ KFMX=KFIS(I,2)
+ IF(KFIS(I,1).EQ.0) KFMX=0
+ KFM2=(KFMX+1)/2
+ IF(2*KFM2.EQ.KFMX) KFM2=-KFM2
+ CALL PYNAME(KFM2,CHAU)
+ CHIS(2)=CHAU(1:12)
+ IF(CHAU(13:13).NE.' ') CHIS(2)(12:12)='?'
+ WRITE(MSTU(11),5100) CHIS(1),CHIS(2),FAC*NPIS(I,0),
+ & (NPIS(I,J)/DBLE(NPIS(I,0)),J=1,10)
+ 170 CONTINUE
+
+C...Copy statistics on initial parton state into /PYJETS/.
+ ELSEIF(MTABU.EQ.13) THEN
+ FAC=1D0/MAX(1,NEVIS)
+ DO 190 I=1,NKFIS
+ KFMN=KFIS(I,1)
+ IF(KFMN.EQ.0) KFMN=KFIS(I,2)
+ KFM1=(KFMN+1)/2
+ IF(2*KFM1.EQ.KFMN) KFM1=-KFM1
+ KFMX=KFIS(I,2)
+ IF(KFIS(I,1).EQ.0) KFMX=0
+ KFM2=(KFMX+1)/2
+ IF(2*KFM2.EQ.KFMX) KFM2=-KFM2
+ K(I,1)=32
+ K(I,2)=99
+ K(I,3)=KFM1
+ K(I,4)=KFM2
+ K(I,5)=NPIS(I,0)
+ DO 180 J=1,5
+ P(I,J)=FAC*NPIS(I,J)
+ V(I,J)=FAC*NPIS(I,J+5)
+ 180 CONTINUE
+ 190 CONTINUE
+ N=NKFIS
+ DO 200 J=1,5
+ K(N+1,J)=0
+ P(N+1,J)=0D0
+ V(N+1,J)=0D0
+ 200 CONTINUE
+ K(N+1,1)=32
+ K(N+1,2)=99
+ K(N+1,5)=NEVIS
+ MSTU(3)=1
+
+C...Reset statistics on number of particles/partons.
+ ELSEIF(MTABU.EQ.20) THEN
+ NEVFS=0
+ NPRFS=0
+ NFIFS=0
+ NCHFS=0
+ NKFFS=0
+
+C...Identify whether particle/parton is primary or not.
+ ELSEIF(MTABU.EQ.21) THEN
+ NEVFS=NEVFS+1
+ MSTU(62)=0
+ DO 260 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.20.OR.K(I,1).EQ.13) GOTO 260
+ MSTU(62)=MSTU(62)+1
+ KC=PYCOMP(K(I,2))
+ MPRI=0
+ IF(K(I,3).LE.0.OR.K(I,3).GT.N) THEN
+ MPRI=1
+ ELSEIF(K(K(I,3),1).LE.0.OR.K(K(I,3),1).GT.20) THEN
+ MPRI=1
+ ELSEIF(K(K(I,3),2).GE.91.AND.K(K(I,3),2).LE.93) THEN
+ MPRI=1
+ ELSEIF(KC.EQ.0) THEN
+ ELSEIF(K(K(I,3),1).EQ.13) THEN
+ IM=K(K(I,3),3)
+ IF(IM.LE.0.OR.IM.GT.N) THEN
+ MPRI=1
+ ELSEIF(K(IM,1).LE.0.OR.K(IM,1).GT.20) THEN
+ MPRI=1
+ ENDIF
+ ELSEIF(KCHG(KC,2).EQ.0) THEN
+ KCM=PYCOMP(K(K(I,3),2))
+ IF(KCM.NE.0) THEN
+ IF(KCHG(KCM,2).NE.0) MPRI=1
+ ENDIF
+ ENDIF
+ IF(KC.NE.0.AND.MPRI.EQ.1) THEN
+ IF(KCHG(KC,2).EQ.0) NPRFS=NPRFS+1
+ ENDIF
+ IF(K(I,1).LE.10) THEN
+ NFIFS=NFIFS+1
+ IF(PYCHGE(K(I,2)).NE.0) NCHFS=NCHFS+1
+ ENDIF
+
+C...Fill statistics on number of particles/partons in event.
+ KFA=IABS(K(I,2))
+ KFS=3-ISIGN(1,K(I,2))-MPRI
+ DO 210 IP=1,NKFFS
+ IF(KFA.EQ.KFFS(IP)) THEN
+ IKFFS=-IP
+ GOTO 220
+ ELSEIF(KFA.LT.KFFS(IP)) THEN
+ IKFFS=IP
+ GOTO 220
+ ENDIF
+ 210 CONTINUE
+ IKFFS=NKFFS+1
+ 220 IF(IKFFS.LT.0) THEN
+ IKFFS=-IKFFS
+ ELSE
+ IF(NKFFS.GE.400) RETURN
+ DO 240 IP=NKFFS,IKFFS,-1
+ KFFS(IP+1)=KFFS(IP)
+ DO 230 J=1,4
+ NPFS(IP+1,J)=NPFS(IP,J)
+ 230 CONTINUE
+ 240 CONTINUE
+ NKFFS=NKFFS+1
+ KFFS(IKFFS)=KFA
+ DO 250 J=1,4
+ NPFS(IKFFS,J)=0
+ 250 CONTINUE
+ ENDIF
+ NPFS(IKFFS,KFS)=NPFS(IKFFS,KFS)+1
+ 260 CONTINUE
+
+C...Write statistics on particle/parton composition of events.
+ ELSEIF(MTABU.EQ.22) THEN
+ FAC=1D0/MAX(1,NEVFS)
+ WRITE(MSTU(11),5200) NEVFS,FAC*NPRFS,FAC*NFIFS,FAC*NCHFS
+ DO 270 I=1,NKFFS
+ CALL PYNAME(KFFS(I),CHAU)
+ KC=PYCOMP(KFFS(I))
+ MDCYF=0
+ IF(KC.NE.0) MDCYF=MDCY(KC,1)
+ WRITE(MSTU(11),5300) KFFS(I),CHAU,MDCYF,(FAC*NPFS(I,J),J=1,4),
+ & FAC*(NPFS(I,1)+NPFS(I,2)+NPFS(I,3)+NPFS(I,4))
+ 270 CONTINUE
+
+C...Copy particle/parton composition information into /PYJETS/.
+ ELSEIF(MTABU.EQ.23) THEN
+ FAC=1D0/MAX(1,NEVFS)
+ DO 290 I=1,NKFFS
+ K(I,1)=32
+ K(I,2)=99
+ K(I,3)=KFFS(I)
+ K(I,4)=0
+ K(I,5)=NPFS(I,1)+NPFS(I,2)+NPFS(I,3)+NPFS(I,4)
+ DO 280 J=1,4
+ P(I,J)=FAC*NPFS(I,J)
+ V(I,J)=0D0
+ 280 CONTINUE
+ P(I,5)=FAC*K(I,5)
+ V(I,5)=0D0
+ 290 CONTINUE
+ N=NKFFS
+ DO 300 J=1,5
+ K(N+1,J)=0
+ P(N+1,J)=0D0
+ V(N+1,J)=0D0
+ 300 CONTINUE
+ K(N+1,1)=32
+ K(N+1,2)=99
+ K(N+1,5)=NEVFS
+ P(N+1,1)=FAC*NPRFS
+ P(N+1,2)=FAC*NFIFS
+ P(N+1,3)=FAC*NCHFS
+ MSTU(3)=1
+
+C...Reset factorial moments statistics.
+ ELSEIF(MTABU.EQ.30) THEN
+ NEVFM=0
+ NMUFM=0
+ DO 330 IM=1,3
+ DO 320 IB=1,10
+ DO 310 IP=1,4
+ FM1FM(IM,IB,IP)=0D0
+ FM2FM(IM,IB,IP)=0D0
+ 310 CONTINUE
+ 320 CONTINUE
+ 330 CONTINUE
+
+C...Find particles to include, with (pion,pseudo)rapidity and azimuth.
+ ELSEIF(MTABU.EQ.31) THEN
+ NEVFM=NEVFM+1
+ NLOW=N+MSTU(3)
+ NUPP=NLOW
+ DO 410 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 410
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 410
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.
+ & PYCHGE(K(I,2)).EQ.0) GOTO 410
+ ENDIF
+ PMR=0D0
+ IF(MSTU(42).EQ.1.AND.K(I,2).NE.22) PMR=PYMASS(211)
+ IF(MSTU(42).GE.2) PMR=P(I,5)
+ PR=MAX(1D-20,PMR**2+P(I,1)**2+P(I,2)**2)
+ YETA=SIGN(LOG(MIN((SQRT(PR+P(I,3)**2)+ABS(P(I,3)))/SQRT(PR),
+ & 1D20)),P(I,3))
+ IF(ABS(YETA).GT.PARU(57)) GOTO 410
+ PHI=PYANGL(P(I,1),P(I,2))
+ IYETA=512D0*(YETA+PARU(57))/(2D0*PARU(57))
+ IYETA=MAX(0,MIN(511,IYETA))
+ IPHI=512D0*(PHI+PARU(1))/PARU(2)
+ IPHI=MAX(0,MIN(511,IPHI))
+ IYEP=0
+ DO 340 IB=0,9
+ IYEP=IYEP+4**IB*(2*MOD(IYETA/2**IB,2)+MOD(IPHI/2**IB,2))
+ 340 CONTINUE
+
+C...Order particles in (pseudo)rapidity and/or azimuth.
+ IF(NUPP.GT.MSTU(4)-5-MSTU(32)) THEN
+ CALL PYERRM(11,'(PYTABU:) no more memory left in PYJETS')
+ RETURN
+ ENDIF
+ NUPP=NUPP+1
+ IF(NUPP.EQ.NLOW+1) THEN
+ K(NUPP,1)=IYETA
+ K(NUPP,2)=IPHI
+ K(NUPP,3)=IYEP
+ ELSE
+ DO 350 I1=NUPP-1,NLOW+1,-1
+ IF(IYETA.GE.K(I1,1)) GOTO 360
+ K(I1+1,1)=K(I1,1)
+ 350 CONTINUE
+ 360 K(I1+1,1)=IYETA
+ DO 370 I1=NUPP-1,NLOW+1,-1
+ IF(IPHI.GE.K(I1,2)) GOTO 380
+ K(I1+1,2)=K(I1,2)
+ 370 CONTINUE
+ 380 K(I1+1,2)=IPHI
+ DO 390 I1=NUPP-1,NLOW+1,-1
+ IF(IYEP.GE.K(I1,3)) GOTO 400
+ K(I1+1,3)=K(I1,3)
+ 390 CONTINUE
+ 400 K(I1+1,3)=IYEP
+ ENDIF
+ 410 CONTINUE
+ K(NUPP+1,1)=2**10
+ K(NUPP+1,2)=2**10
+ K(NUPP+1,3)=4**10
+
+C...Calculate sum of factorial moments in event.
+ DO 480 IM=1,3
+ DO 430 IB=1,10
+ DO 420 IP=1,4
+ FEVFM(IB,IP)=0D0
+ 420 CONTINUE
+ 430 CONTINUE
+ DO 450 IB=1,10
+ IF(IM.LE.2) IBIN=2**(10-IB)
+ IF(IM.EQ.3) IBIN=4**(10-IB)
+ IAGR=K(NLOW+1,IM)/IBIN
+ NAGR=1
+ DO 440 I=NLOW+2,NUPP+1
+ ICUT=K(I,IM)/IBIN
+ IF(ICUT.EQ.IAGR) THEN
+ NAGR=NAGR+1
+ ELSE
+ IF(NAGR.EQ.1) THEN
+ ELSEIF(NAGR.EQ.2) THEN
+ FEVFM(IB,1)=FEVFM(IB,1)+2D0
+ ELSEIF(NAGR.EQ.3) THEN
+ FEVFM(IB,1)=FEVFM(IB,1)+6D0
+ FEVFM(IB,2)=FEVFM(IB,2)+6D0
+ ELSEIF(NAGR.EQ.4) THEN
+ FEVFM(IB,1)=FEVFM(IB,1)+12D0
+ FEVFM(IB,2)=FEVFM(IB,2)+24D0
+ FEVFM(IB,3)=FEVFM(IB,3)+24D0
+ ELSE
+ FEVFM(IB,1)=FEVFM(IB,1)+NAGR*(NAGR-1D0)
+ FEVFM(IB,2)=FEVFM(IB,2)+NAGR*(NAGR-1D0)*(NAGR-2D0)
+ FEVFM(IB,3)=FEVFM(IB,3)+NAGR*(NAGR-1D0)*(NAGR-2D0)*
+ & (NAGR-3D0)
+ FEVFM(IB,4)=FEVFM(IB,4)+NAGR*(NAGR-1D0)*(NAGR-2D0)*
+ & (NAGR-3D0)*(NAGR-4D0)
+ ENDIF
+ IAGR=ICUT
+ NAGR=1
+ ENDIF
+ 440 CONTINUE
+ 450 CONTINUE
+
+C...Add results to total statistics.
+ DO 470 IB=10,1,-1
+ DO 460 IP=1,4
+ IF(FEVFM(1,IP).LT.0.5D0) THEN
+ FEVFM(IB,IP)=0D0
+ ELSEIF(IM.LE.2) THEN
+ FEVFM(IB,IP)=2D0**((IB-1)*IP)*FEVFM(IB,IP)/FEVFM(1,IP)
+ ELSE
+ FEVFM(IB,IP)=4D0**((IB-1)*IP)*FEVFM(IB,IP)/FEVFM(1,IP)
+ ENDIF
+ FM1FM(IM,IB,IP)=FM1FM(IM,IB,IP)+FEVFM(IB,IP)
+ FM2FM(IM,IB,IP)=FM2FM(IM,IB,IP)+FEVFM(IB,IP)**2
+ 460 CONTINUE
+ 470 CONTINUE
+ 480 CONTINUE
+ NMUFM=NMUFM+(NUPP-NLOW)
+ MSTU(62)=NUPP-NLOW
+
+C...Write accumulated statistics on factorial moments.
+ ELSEIF(MTABU.EQ.32) THEN
+ FAC=1D0/MAX(1,NEVFM)
+ IF(MSTU(42).LE.0) WRITE(MSTU(11),5400) NEVFM,'eta'
+ IF(MSTU(42).EQ.1) WRITE(MSTU(11),5400) NEVFM,'ypi'
+ IF(MSTU(42).GE.2) WRITE(MSTU(11),5400) NEVFM,'y '
+ DO 510 IM=1,3
+ WRITE(MSTU(11),5500)
+ DO 500 IB=1,10
+ BYETA=2D0*PARU(57)
+ IF(IM.NE.2) BYETA=BYETA/2**(IB-1)
+ BPHI=PARU(2)
+ IF(IM.NE.1) BPHI=BPHI/2**(IB-1)
+ IF(IM.LE.2) BNAVE=FAC*NMUFM/DBLE(2**(IB-1))
+ IF(IM.EQ.3) BNAVE=FAC*NMUFM/DBLE(4**(IB-1))
+ DO 490 IP=1,4
+ FMOMA(IP)=FAC*FM1FM(IM,IB,IP)
+ FMOMS(IP)=SQRT(MAX(0D0,FAC*(FAC*FM2FM(IM,IB,IP)-
+ & FMOMA(IP)**2)))
+ 490 CONTINUE
+ WRITE(MSTU(11),5600) BYETA,BPHI,BNAVE,(FMOMA(IP),FMOMS(IP),
+ & IP=1,4)
+ 500 CONTINUE
+ 510 CONTINUE
+
+C...Copy statistics on factorial moments into /PYJETS/.
+ ELSEIF(MTABU.EQ.33) THEN
+ FAC=1D0/MAX(1,NEVFM)
+ DO 540 IM=1,3
+ DO 530 IB=1,10
+ I=10*(IM-1)+IB
+ K(I,1)=32
+ K(I,2)=99
+ K(I,3)=1
+ IF(IM.NE.2) K(I,3)=2**(IB-1)
+ K(I,4)=1
+ IF(IM.NE.1) K(I,4)=2**(IB-1)
+ K(I,5)=0
+ P(I,1)=2D0*PARU(57)/K(I,3)
+ V(I,1)=PARU(2)/K(I,4)
+ DO 520 IP=1,4
+ P(I,IP+1)=FAC*FM1FM(IM,IB,IP)
+ V(I,IP+1)=SQRT(MAX(0D0,FAC*(FAC*FM2FM(IM,IB,IP)-
+ & P(I,IP+1)**2)))
+ 520 CONTINUE
+ 530 CONTINUE
+ 540 CONTINUE
+ N=30
+ DO 550 J=1,5
+ K(N+1,J)=0
+ P(N+1,J)=0D0
+ V(N+1,J)=0D0
+ 550 CONTINUE
+ K(N+1,1)=32
+ K(N+1,2)=99
+ K(N+1,5)=NEVFM
+ MSTU(3)=1
+
+C...Reset statistics on Energy-Energy Correlation.
+ ELSEIF(MTABU.EQ.40) THEN
+ NEVEE=0
+ DO 560 J=1,25
+ FE1EC(J)=0D0
+ FE2EC(J)=0D0
+ FE1EC(51-J)=0D0
+ FE2EC(51-J)=0D0
+ FE1EA(J)=0D0
+ FE2EA(J)=0D0
+ 560 CONTINUE
+
+C...Find particles to include, with proper assumed mass.
+ ELSEIF(MTABU.EQ.41) THEN
+ NEVEE=NEVEE+1
+ NLOW=N+MSTU(3)
+ NUPP=NLOW
+ ECM=0D0
+ DO 570 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GT.10) GOTO 570
+ IF(MSTU(41).GE.2) THEN
+ KC=PYCOMP(K(I,2))
+ IF(KC.EQ.0.OR.KC.EQ.12.OR.KC.EQ.14.OR.KC.EQ.16.OR.
+ & KC.EQ.18.OR.K(I,2).EQ.KSUSY1+22.OR.K(I,2).EQ.39.OR.
+ & K(I,2).EQ.KSUSY1+39) GOTO 570
+ IF(MSTU(41).GE.3.AND.KCHG(KC,2).EQ.0.AND.
+ & PYCHGE(K(I,2)).EQ.0) GOTO 570
+ ENDIF
+ PMR=0D0
+ IF(MSTU(42).EQ.1.AND.K(I,2).NE.22) PMR=PYMASS(211)
+ IF(MSTU(42).GE.2) PMR=P(I,5)
+ IF(NUPP.GT.MSTU(4)-5-MSTU(32)) THEN
+ CALL PYERRM(11,'(PYTABU:) no more memory left in PYJETS')
+ RETURN
+ ENDIF
+ NUPP=NUPP+1
+ P(NUPP,1)=P(I,1)
+ P(NUPP,2)=P(I,2)
+ P(NUPP,3)=P(I,3)
+ P(NUPP,4)=SQRT(PMR**2+P(I,1)**2+P(I,2)**2+P(I,3)**2)
+ P(NUPP,5)=MAX(1D-10,SQRT(P(I,1)**2+P(I,2)**2+P(I,3)**2))
+ ECM=ECM+P(NUPP,4)
+ 570 CONTINUE
+ IF(NUPP.EQ.NLOW) RETURN
+
+C...Analyze Energy-Energy Correlation in event.
+ FAC=(2D0/ECM**2)*50D0/PARU(1)
+ DO 580 J=1,50
+ FEVEE(J)=0D0
+ 580 CONTINUE
+ DO 600 I1=NLOW+2,NUPP
+ DO 590 I2=NLOW+1,I1-1
+ CTHE=(P(I1,1)*P(I2,1)+P(I1,2)*P(I2,2)+P(I1,3)*P(I2,3))/
+ & (P(I1,5)*P(I2,5))
+ THE=ACOS(MAX(-1D0,MIN(1D0,CTHE)))
+ ITHE=MAX(1,MIN(50,1+INT(50D0*THE/PARU(1))))
+ FEVEE(ITHE)=FEVEE(ITHE)+FAC*P(I1,4)*P(I2,4)
+ 590 CONTINUE
+ 600 CONTINUE
+ DO 610 J=1,25
+ FE1EC(J)=FE1EC(J)+FEVEE(J)
+ FE2EC(J)=FE2EC(J)+FEVEE(J)**2
+ FE1EC(51-J)=FE1EC(51-J)+FEVEE(51-J)
+ FE2EC(51-J)=FE2EC(51-J)+FEVEE(51-J)**2
+ FE1EA(J)=FE1EA(J)+(FEVEE(51-J)-FEVEE(J))
+ FE2EA(J)=FE2EA(J)+(FEVEE(51-J)-FEVEE(J))**2
+ 610 CONTINUE
+ MSTU(62)=NUPP-NLOW
+
+C...Write statistics on Energy-Energy Correlation.
+ ELSEIF(MTABU.EQ.42) THEN
+ FAC=1D0/MAX(1,NEVEE)
+ WRITE(MSTU(11),5700) NEVEE
+ DO 620 J=1,25
+ FEEC1=FAC*FE1EC(J)
+ FEES1=SQRT(MAX(0D0,FAC*(FAC*FE2EC(J)-FEEC1**2)))
+ FEEC2=FAC*FE1EC(51-J)
+ FEES2=SQRT(MAX(0D0,FAC*(FAC*FE2EC(51-J)-FEEC2**2)))
+ FEECA=FAC*FE1EA(J)
+ FEESA=SQRT(MAX(0D0,FAC*(FAC*FE2EA(J)-FEECA**2)))
+ WRITE(MSTU(11),5800) 3.6D0*(J-1),3.6D0*J,FEEC1,FEES1,
+ & FEEC2,FEES2,FEECA,FEESA
+ 620 CONTINUE
+
+C...Copy statistics on Energy-Energy Correlation into /PYJETS/.
+ ELSEIF(MTABU.EQ.43) THEN
+ FAC=1D0/MAX(1,NEVEE)
+ DO 630 I=1,25
+ K(I,1)=32
+ K(I,2)=99
+ K(I,3)=0
+ K(I,4)=0
+ K(I,5)=0
+ P(I,1)=FAC*FE1EC(I)
+ V(I,1)=SQRT(MAX(0D0,FAC*(FAC*FE2EC(I)-P(I,1)**2)))
+ P(I,2)=FAC*FE1EC(51-I)
+ V(I,2)=SQRT(MAX(0D0,FAC*(FAC*FE2EC(51-I)-P(I,2)**2)))
+ P(I,3)=FAC*FE1EA(I)
+ V(I,3)=SQRT(MAX(0D0,FAC*(FAC*FE2EA(I)-P(I,3)**2)))
+ P(I,4)=PARU(1)*(I-1)/50D0
+ P(I,5)=PARU(1)*I/50D0
+ V(I,4)=3.6D0*(I-1)
+ V(I,5)=3.6D0*I
+ 630 CONTINUE
+ N=25
+ DO 640 J=1,5
+ K(N+1,J)=0
+ P(N+1,J)=0D0
+ V(N+1,J)=0D0
+ 640 CONTINUE
+ K(N+1,1)=32
+ K(N+1,2)=99
+ K(N+1,5)=NEVEE
+ MSTU(3)=1
+
+C...Reset statistics on decay channels.
+ ELSEIF(MTABU.EQ.50) THEN
+ NEVDC=0
+ NKFDC=0
+ NREDC=0
+
+C...Identify and order flavour content of final state.
+ ELSEIF(MTABU.EQ.51) THEN
+ NEVDC=NEVDC+1
+ NDS=0
+ DO 670 I=1,N
+ IF(K(I,1).LE.0.OR.K(I,1).GE.6) GOTO 670
+ NDS=NDS+1
+ IF(NDS.GT.8) THEN
+ NREDC=NREDC+1
+ RETURN
+ ENDIF
+ KFM=2*IABS(K(I,2))
+ IF(K(I,2).LT.0) KFM=KFM-1
+ DO 650 IDS=NDS-1,1,-1
+ IIN=IDS+1
+ IF(KFM.LT.KFDM(IDS)) GOTO 660
+ KFDM(IDS+1)=KFDM(IDS)
+ 650 CONTINUE
+ IIN=1
+ 660 KFDM(IIN)=KFM
+ 670 CONTINUE
+
+C...Find whether old or new final state.
+ DO 690 IDC=1,NKFDC
+ IF(NDS.LT.KFDC(IDC,0)) THEN
+ IKFDC=IDC
+ GOTO 700
+ ELSEIF(NDS.EQ.KFDC(IDC,0)) THEN
+ DO 680 I=1,NDS
+ IF(KFDM(I).LT.KFDC(IDC,I)) THEN
+ IKFDC=IDC
+ GOTO 700
+ ELSEIF(KFDM(I).GT.KFDC(IDC,I)) THEN
+ GOTO 690
+ ENDIF
+ 680 CONTINUE
+ IKFDC=-IDC
+ GOTO 700
+ ENDIF
+ 690 CONTINUE
+ IKFDC=NKFDC+1
+ 700 IF(IKFDC.LT.0) THEN
+ IKFDC=-IKFDC
+ ELSEIF(NKFDC.GE.200) THEN
+ NREDC=NREDC+1
+ RETURN
+ ELSE
+ DO 720 IDC=NKFDC,IKFDC,-1
+ NPDC(IDC+1)=NPDC(IDC)
+ DO 710 I=0,8
+ KFDC(IDC+1,I)=KFDC(IDC,I)
+ 710 CONTINUE
+ 720 CONTINUE
+ NKFDC=NKFDC+1
+ KFDC(IKFDC,0)=NDS
+ DO 730 I=1,NDS
+ KFDC(IKFDC,I)=KFDM(I)
+ 730 CONTINUE
+ NPDC(IKFDC)=0
+ ENDIF
+ NPDC(IKFDC)=NPDC(IKFDC)+1
+
+C...Write statistics on decay channels.
+ ELSEIF(MTABU.EQ.52) THEN
+ FAC=1D0/MAX(1,NEVDC)
+ WRITE(MSTU(11),5900) NEVDC
+ DO 750 IDC=1,NKFDC
+ DO 740 I=1,KFDC(IDC,0)
+ KFM=KFDC(IDC,I)
+ KF=(KFM+1)/2
+ IF(2*KF.NE.KFM) KF=-KF
+ CALL PYNAME(KF,CHAU)
+ CHDC(I)=CHAU(1:12)
+ IF(CHAU(13:13).NE.' ') CHDC(I)(12:12)='?'
+ 740 CONTINUE
+ WRITE(MSTU(11),6000) FAC*NPDC(IDC),(CHDC(I),I=1,KFDC(IDC,0))
+ 750 CONTINUE
+ IF(NREDC.NE.0) WRITE(MSTU(11),6100) FAC*NREDC
+
+C...Copy statistics on decay channels into /PYJETS/.
+ ELSEIF(MTABU.EQ.53) THEN
+ FAC=1D0/MAX(1,NEVDC)
+ DO 780 IDC=1,NKFDC
+ K(IDC,1)=32
+ K(IDC,2)=99
+ K(IDC,3)=0
+ K(IDC,4)=0
+ K(IDC,5)=KFDC(IDC,0)
+ DO 760 J=1,5
+ P(IDC,J)=0D0
+ V(IDC,J)=0D0
+ 760 CONTINUE
+ DO 770 I=1,KFDC(IDC,0)
+ KFM=KFDC(IDC,I)
+ KF=(KFM+1)/2
+ IF(2*KF.NE.KFM) KF=-KF
+ IF(I.LE.5) P(IDC,I)=KF
+ IF(I.GE.6) V(IDC,I-5)=KF
+ 770 CONTINUE
+ V(IDC,5)=FAC*NPDC(IDC)
+ 780 CONTINUE
+ N=NKFDC
+ DO 790 J=1,5
+ K(N+1,J)=0
+ P(N+1,J)=0D0
+ V(N+1,J)=0D0
+ 790 CONTINUE
+ K(N+1,1)=32
+ K(N+1,2)=99
+ K(N+1,5)=NEVDC
+ V(N+1,5)=FAC*NREDC
+ MSTU(3)=1
+ ENDIF
+
+C...Format statements for output on unit MSTU(11) (default 6).
+ 5000 FORMAT(///20X,'Event statistics - initial state'/
+ &20X,'based on an analysis of ',I6,' events'//
+ &3X,'Main flavours after',8X,'Fraction',4X,'Subfractions ',
+ &'according to fragmenting system multiplicity'/
+ &4X,'hard interaction',24X,'1',7X,'2',7X,'3',7X,'4',7X,'5',
+ &6X,'6-7',5X,'8-10',3X,'11-15',3X,'16-25',4X,'>25'/)
+ 5100 FORMAT(3X,A12,1X,A12,F10.5,1X,10F8.4)
+ 5200 FORMAT(///20X,'Event statistics - final state'/
+ &20X,'based on an analysis of ',I7,' events'//
+ &5X,'Mean primary multiplicity =',F10.4/
+ &5X,'Mean final multiplicity =',F10.4/
+ &5X,'Mean charged multiplicity =',F10.4//
+ &5X,'Number of particles produced per event (directly and via ',
+ &'decays/branchings)'/
+ &8X,'KF Particle/jet MDCY',10X,'Particles',13X,'Antiparticles',
+ &8X,'Total'/35X,'prim seco prim seco'/)
+ 5300 FORMAT(1X,I9,4X,A16,I2,5(1X,F11.6))
+ 5400 FORMAT(///20X,'Factorial moments analysis of multiplicity'/
+ &20X,'based on an analysis of ',I6,' events'//
+ &3X,'delta-',A3,' delta-phi <n>/bin',10X,'<F2>',18X,'<F3>',
+ &18X,'<F4>',18X,'<F5>'/35X,4(' value error '))
+ 5500 FORMAT(10X)
+ 5600 FORMAT(2X,2F10.4,F12.4,4(F12.4,F10.4))
+ 5700 FORMAT(///20X,'Energy-Energy Correlation and Asymmetry'/
+ &20X,'based on an analysis of ',I6,' events'//
+ &2X,'theta range',8X,'EEC(theta)',8X,'EEC(180-theta)',7X,
+ &'EECA(theta)'/2X,'in degrees ',3(' value error')/)
+ 5800 FORMAT(2X,F4.1,' - ',F4.1,3(F11.4,F9.4))
+ 5900 FORMAT(///20X,'Decay channel analysis - final state'/
+ &20X,'based on an analysis of ',I6,' events'//
+ &2X,'Probability',10X,'Complete final state'/)
+ 6000 FORMAT(2X,F9.5,5X,8(A12,1X))
+ 6100 FORMAT(2X,F9.5,5X,'into other channels (more than 8 particles ',
+ &'or table overflow)')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYEEVT
+C...Handles the generation of an e+e- annihilation jet event.
+
+ SUBROUTINE PYEEVT(KFL,ECM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Check input parameters.
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ IF(KFL.LT.0.OR.KFL.GT.8) THEN
+ CALL PYERRM(16,'(PYEEVT:) called with unknown flavour code')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IF(KFL.LE.5) ECMMIN=PARJ(127)+2.02D0*PARF(100+MAX(1,KFL))
+ IF(KFL.GE.6) ECMMIN=PARJ(127)+2.02D0*PMAS(KFL,1)
+ IF(ECM.LT.ECMMIN) THEN
+ CALL PYERRM(16,'(PYEEVT:) called with too small CM energy')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+
+C...Check consistency of MSTJ options set.
+ IF(MSTJ(109).EQ.2.AND.MSTJ(110).NE.1) THEN
+ CALL PYERRM(6,
+ & '(PYEEVT:) MSTJ(109) value requires MSTJ(110) = 1')
+ MSTJ(110)=1
+ ENDIF
+ IF(MSTJ(109).EQ.2.AND.MSTJ(111).NE.0) THEN
+ CALL PYERRM(6,
+ & '(PYEEVT:) MSTJ(109) value requires MSTJ(111) = 0')
+ MSTJ(111)=0
+ ENDIF
+
+C...Initialize alpha_strong and total cross-section.
+ MSTU(111)=MSTJ(108)
+ IF(MSTJ(108).EQ.2.AND.(MSTJ(101).EQ.0.OR.MSTJ(101).EQ.1))
+ &MSTU(111)=1
+ PARU(112)=PARJ(121)
+ IF(MSTU(111).EQ.2) PARU(112)=PARJ(122)
+ IF(MSTJ(116).GT.0.AND.(MSTJ(116).GE.2.OR.ABS(ECM-PARJ(151)).GE.
+ &PARJ(139).OR.10*MSTJ(102)+KFL.NE.MSTJ(119))) CALL PYXTEE(KFL,ECM,
+ &XTOT)
+ IF(MSTJ(116).GE.3) MSTJ(116)=1
+ PARJ(171)=0D0
+
+C...Add initial e+e- to event record (documentation only).
+ NTRY=0
+ 100 NTRY=NTRY+1
+ IF(NTRY.GT.100) THEN
+ CALL PYERRM(14,'(PYEEVT:) caught in an infinite loop')
+ RETURN
+ ENDIF
+ MSTU(24)=0
+ NC=0
+ IF(MSTJ(115).GE.2) THEN
+ NC=NC+2
+ CALL PY1ENT(NC-1,11,0.5D0*ECM,0D0,0D0)
+ K(NC-1,1)=21
+ CALL PY1ENT(NC,-11,0.5D0*ECM,PARU(1),0D0)
+ K(NC,1)=21
+ ENDIF
+
+C...Radiative photon (in initial state).
+ MK=0
+ ECMC=ECM
+ IF(MSTJ(107).GE.1.AND.MSTJ(116).GE.1) CALL PYRADK(ECM,MK,PAK,
+ &THEK,PHIK,ALPK)
+ IF(MK.EQ.1) ECMC=SQRT(ECM*(ECM-2D0*PAK))
+ IF(MSTJ(115).GE.1.AND.MK.EQ.1) THEN
+ NC=NC+1
+ CALL PY1ENT(NC,22,PAK,THEK,PHIK)
+ K(NC,3)=MIN(MSTJ(115)/2,1)
+ ENDIF
+
+C...Virtual exchange boson (gamma or Z0).
+ IF(MSTJ(115).GE.3) THEN
+ NC=NC+1
+ KF=22
+ IF(MSTJ(102).EQ.2) KF=23
+ MSTU10=MSTU(10)
+ MSTU(10)=1
+ P(NC,5)=ECMC
+ CALL PY1ENT(NC,KF,ECMC,0D0,0D0)
+ K(NC,1)=21
+ K(NC,3)=1
+ MSTU(10)=MSTU10
+ ENDIF
+
+C...Choice of flavour and jet configuration.
+ CALL PYXKFL(KFL,ECM,ECMC,KFLC)
+ IF(KFLC.EQ.0) GOTO 100
+ CALL PYXJET(ECMC,NJET,CUT)
+ KFLN=21
+ IF(NJET.EQ.4) CALL PYX4JT(NJET,CUT,KFLC,ECMC,KFLN,X1,X2,X4,
+ &X12,X14)
+ IF(NJET.EQ.3) CALL PYX3JT(NJET,CUT,KFLC,ECMC,X1,X3)
+ IF(NJET.EQ.2) MSTJ(120)=1
+
+C...Fill jet configuration and origin.
+ IF(NJET.EQ.2.AND.MSTJ(101).NE.5) CALL PY2ENT(NC+1,KFLC,-KFLC,ECMC)
+ IF(NJET.EQ.2.AND.MSTJ(101).EQ.5) CALL PY2ENT(-(NC+1),KFLC,-KFLC,
+ &ECMC)
+ IF(NJET.EQ.3) CALL PY3ENT(NC+1,KFLC,21,-KFLC,ECMC,X1,X3)
+ IF(NJET.EQ.4.AND.KFLN.EQ.21) CALL PY4ENT(NC+1,KFLC,KFLN,KFLN,
+ &-KFLC,ECMC,X1,X2,X4,X12,X14)
+ IF(NJET.EQ.4.AND.KFLN.NE.21) CALL PY4ENT(NC+1,KFLC,-KFLN,KFLN,
+ &-KFLC,ECMC,X1,X2,X4,X12,X14)
+ IF(MSTU(24).NE.0) GOTO 100
+ DO 110 IP=NC+1,N
+ K(IP,3)=K(IP,3)+MIN(MSTJ(115)/2,1)+(MSTJ(115)/3)*(NC-1)
+ 110 CONTINUE
+
+C...Angular orientation according to matrix element.
+ IF(MSTJ(106).EQ.1) THEN
+ CALL PYXDIF(NC,NJET,KFLC,ECMC,CHI,THE,PHI)
+ CALL PYROBO(NC+1,N,0D0,CHI,0D0,0D0,0D0)
+ CALL PYROBO(NC+1,N,THE,PHI,0D0,0D0,0D0)
+ ENDIF
+
+C...Rotation and boost from radiative photon.
+ IF(MK.EQ.1) THEN
+ DBEK=-PAK/(ECM-PAK)
+ NMIN=NC+1-MSTJ(115)/3
+ CALL PYROBO(NMIN,N,0D0,-PHIK,0D0,0D0,0D0)
+ CALL PYROBO(NMIN,N,ALPK,0D0,DBEK*SIN(THEK),0D0,DBEK*COS(THEK))
+ CALL PYROBO(NMIN,N,0D0,PHIK,0D0,0D0,0D0)
+ ENDIF
+
+C...Generate parton shower. Rearrange along strings and check.
+ IF(MSTJ(101).EQ.5) THEN
+ if(parj(200).ne.1.) CALL PYSHOW(N-1,N,ECMC)
+ if(parj(200).eq.1.) CALL PYSHOWQ(N-1,N,ECMC)
+ MSTJ14=MSTJ(14)
+ IF(MSTJ(105).EQ.-1) MSTJ(14)=-1
+ IF(MSTJ(105).GE.0) MSTU(28)=0
+ CALL PYPREP(0)
+ MSTJ(14)=MSTJ14
+ IF(MSTJ(105).GE.0.AND.MSTU(28).NE.0) GOTO 100
+ ENDIF
+
+C...Fragmentation/decay generation. Information for PYTABU.
+ IF(MSTJ(105).EQ.1) CALL PYEXEC
+ MSTU(161)=KFLC
+ MSTU(162)=-KFLC
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYXTEE
+C...Calculates total cross-section, including initial state
+C...radiation effects.
+
+ SUBROUTINE PYXTEE(KFL,ECM,XTOT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+C...Status, (optimized) Q^2 scale, alpha_strong.
+ PARJ(151)=ECM
+ MSTJ(119)=10*MSTJ(102)+KFL
+ IF(MSTJ(111).EQ.0) THEN
+ Q2R=ECM**2
+ ELSEIF(MSTU(111).EQ.0) THEN
+ PARJ(168)=MIN(1D0,MAX(PARJ(128),EXP(-12D0*PARU(1)/
+ & ((33D0-2D0*MSTU(112))*PARU(111)))))
+ Q2R=PARJ(168)*ECM**2
+ ELSE
+ PARJ(168)=MIN(1D0,MAX(PARJ(128),PARU(112)/ECM,
+ & (2D0*PARU(112)/ECM)**2))
+ Q2R=PARJ(168)*ECM**2
+ ENDIF
+ ALSPI=PYALPS(Q2R)/PARU(1)
+
+C...QCD corrections factor in R.
+ IF(MSTJ(101).EQ.0.OR.MSTJ(109).EQ.1) THEN
+ RQCD=1D0
+ ELSEIF(IABS(MSTJ(101)).EQ.1.AND.MSTJ(109).EQ.0) THEN
+ RQCD=1D0+ALSPI
+ ELSEIF(MSTJ(109).EQ.0) THEN
+ RQCD=1D0+ALSPI+(1.986D0-0.115D0*MSTU(118))*ALSPI**2
+ IF(MSTJ(111).EQ.1) RQCD=MAX(1D0,RQCD+(33D0-2D0*MSTU(112))/12D0*
+ & LOG(PARJ(168))*ALSPI**2)
+ ELSEIF(IABS(MSTJ(101)).EQ.1) THEN
+ RQCD=1D0+(3D0/4D0)*ALSPI
+ ELSE
+ RQCD=1D0+(3D0/4D0)*ALSPI-(3D0/32D0+0.519D0*MSTU(118))*ALSPI**2
+ ENDIF
+
+C...Calculate Z0 width if default value not acceptable.
+ IF(MSTJ(102).GE.3) THEN
+ RVA=3D0*(3D0+(4D0*PARU(102)-1D0)**2)+6D0*RQCD*(2D0+
+ & (1D0-8D0*PARU(102)/3D0)**2+(4D0*PARU(102)/3D0-1D0)**2)
+ DO 100 KFLC=5,6
+ VQ=1D0
+ IF(MOD(MSTJ(103),2).EQ.1) VQ=SQRT(MAX(0D0,1D0-
+ & (2D0*PYMASS(KFLC)/ ECM)**2))
+ IF(KFLC.EQ.5) VF=4D0*PARU(102)/3D0-1D0
+ IF(KFLC.EQ.6) VF=1D0-8D0*PARU(102)/3D0
+ RVA=RVA+3D0*RQCD*(0.5D0*VQ*(3D0-VQ**2)*VF**2+VQ**3)
+ 100 CONTINUE
+ PARJ(124)=PARU(101)*PARJ(123)*RVA/(48D0*PARU(102)*
+ & (1D0-PARU(102)))
+ ENDIF
+
+C...Calculate propagator and related constants for QFD case.
+ POLL=1D0-PARJ(131)*PARJ(132)
+ IF(MSTJ(102).GE.2) THEN
+ SFF=1D0/(16D0*PARU(102)*(1D0-PARU(102)))
+ SFW=ECM**4/((ECM**2-PARJ(123)**2)**2+(PARJ(123)*PARJ(124))**2)
+ SFI=SFW*(1D0-(PARJ(123)/ECM)**2)
+ VE=4D0*PARU(102)-1D0
+ SF1I=SFF*(VE*POLL+PARJ(132)-PARJ(131))
+ SF1W=SFF**2*((VE**2+1D0)*POLL+2D0*VE*(PARJ(132)-PARJ(131)))
+ HF1I=SFI*SF1I
+ HF1W=SFW*SF1W
+ ENDIF
+
+C...Loop over different flavours: charge, velocity.
+ RTOT=0D0
+ RQQ=0D0
+ RQV=0D0
+ RVA=0D0
+ DO 110 KFLC=1,MAX(MSTJ(104),KFL)
+ IF(KFL.GT.0.AND.KFLC.NE.KFL) GOTO 110
+ MSTJ(93)=1
+ PMQ=PYMASS(KFLC)
+ IF(ECM.LT.2D0*PMQ+PARJ(127)) GOTO 110
+ QF=KCHG(KFLC,1)/3D0
+ VQ=1D0
+ IF(MOD(MSTJ(103),2).EQ.1) VQ=SQRT(1D0-(2D0*PMQ/ECM)**2)
+
+C...Calculate R and sum of charges for QED or QFD case.
+ RQQ=RQQ+3D0*QF**2*POLL
+ IF(MSTJ(102).LE.1) THEN
+ RTOT=RTOT+3D0*0.5D0*VQ*(3D0-VQ**2)*QF**2*POLL
+ ELSE
+ VF=SIGN(1D0,QF)-4D0*QF*PARU(102)
+ RQV=RQV-6D0*QF*VF*SF1I
+ RVA=RVA+3D0*(VF**2+1D0)*SF1W
+ RTOT=RTOT+3D0*(0.5D0*VQ*(3D0-VQ**2)*(QF**2*POLL-
+ & 2D0*QF*VF*HF1I+VF**2*HF1W)+VQ**3*HF1W)
+ ENDIF
+ 110 CONTINUE
+ RSUM=RQQ
+ IF(MSTJ(102).GE.2) RSUM=RQQ+SFI*RQV+SFW*RVA
+
+C...Calculate cross-section, including QCD corrections.
+ PARJ(141)=RQQ
+ PARJ(142)=RTOT
+ PARJ(143)=RTOT*RQCD
+ PARJ(144)=PARJ(143)
+ PARJ(145)=PARJ(141)*86.8D0/ECM**2
+ PARJ(146)=PARJ(142)*86.8D0/ECM**2
+ PARJ(147)=PARJ(143)*86.8D0/ECM**2
+ PARJ(148)=PARJ(147)
+ PARJ(157)=RSUM*RQCD
+ PARJ(158)=0D0
+ PARJ(159)=0D0
+ XTOT=PARJ(147)
+ IF(MSTJ(107).LE.0) RETURN
+
+C...Virtual cross-section.
+ XKL=PARJ(135)
+ XKU=MIN(PARJ(136),1D0-(2D0*PARJ(127)/ECM)**2)
+ ALE=2D0*LOG(ECM/PYMASS(11))-1D0
+ SIGV=ALE/3D0+2D0*LOG(ECM**2/(PYMASS(13)*PYMASS(15)))/3D0-4D0/3D0+
+ &1.526D0*LOG(ECM**2/0.932D0)
+
+C...Soft and hard radiative cross-section in QED case.
+ IF(MSTJ(102).LE.1) THEN
+ SIGV=1.5D0*ALE-0.5D0+PARU(1)**2/3D0+2D0*SIGV
+ SIGS=ALE*(2D0*LOG(XKL)-LOG(1D0-XKL)-XKL)
+ SIGH=ALE*(2D0*LOG(XKU/XKL)-LOG((1D0-XKU)/(1D0-XKL))-(XKU-XKL))
+
+C...Soft and hard radiative cross-section in QFD case.
+ ELSE
+ SZM=1D0-(PARJ(123)/ECM)**2
+ SZW=PARJ(123)*PARJ(124)/ECM**2
+ PARJ(161)=-RQQ/RSUM
+ PARJ(162)=-(RQQ+RQV+RVA)/RSUM
+ PARJ(163)=(RQV*(1D0-0.5D0*SZM-SFI)+RVA*(1.5D0-SZM-SFW))/RSUM
+ PARJ(164)=(RQV*SZW**2*(1D0-2D0*SFW)+RVA*(2D0*SFI+SZW**2-
+ & 4D0+3D0*SZM-SZM**2))/(SZW*RSUM)
+ SIGV=1.5D0*ALE-0.5D0+PARU(1)**2/3D0+((2D0*RQQ+SFI*RQV)/
+ & RSUM)*SIGV+(SZW*SFW*RQV/RSUM)*PARU(1)*20D0/9D0
+ SIGS=ALE*(2D0*LOG(XKL)+PARJ(161)*LOG(1D0-XKL)+PARJ(162)*XKL+
+ & PARJ(163)*LOG(((XKL-SZM)**2+SZW**2)/(SZM**2+SZW**2))+
+ & PARJ(164)*(ATAN((XKL-SZM)/SZW)-ATAN(-SZM/SZW)))
+ SIGH=ALE*(2D0*LOG(XKU/XKL)+PARJ(161)*LOG((1D0-XKU)/
+ & (1D0-XKL))+PARJ(162)*(XKU-XKL)+PARJ(163)*
+ & LOG(((XKU-SZM)**2+SZW**2)/((XKL-SZM)**2+SZW**2))+
+ & PARJ(164)*(ATAN((XKU-SZM)/SZW)-ATAN((XKL-SZM)/SZW)))
+ ENDIF
+
+C...Total cross-section and fraction of hard photon events.
+ PARJ(160)=SIGH/(PARU(1)/PARU(101)+SIGV+SIGS+SIGH)
+ PARJ(157)=RSUM*(1D0+(PARU(101)/PARU(1))*(SIGV+SIGS+SIGH))*RQCD
+ PARJ(144)=PARJ(157)
+ PARJ(148)=PARJ(144)*86.8D0/ECM**2
+ XTOT=PARJ(148)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYRADK
+C...Generates initial state photon radiation.
+
+ SUBROUTINE PYRADK(ECM,MK,PAK,THEK,PHIK,ALPK)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Function: cumulative hard photon spectrum in QFD case.
+ FXK(XX)=2D0*LOG(XX)+PARJ(161)*LOG(1D0-XX)+PARJ(162)*XX+
+ &PARJ(163)*LOG((XX-SZM)**2+SZW**2)+PARJ(164)*ATAN((XX-SZM)/SZW)
+
+C...Determine whether radiative photon or not.
+ MK=0
+ PAK=0D0
+ IF(PARJ(160).LT.PYR(0)) RETURN
+ MK=1
+
+C...Photon energy range. Find photon momentum in QED case.
+ XKL=PARJ(135)
+ XKU=MIN(PARJ(136),1D0-(2D0*PARJ(127)/ECM)**2)
+ IF(MSTJ(102).LE.1) THEN
+ 100 XK=1D0/(1D0+(1D0/XKL-1D0)*((1D0/XKU-1D0)/(1D0/XKL-1D0))**PYR(0))
+ IF(1D0+(1D0-XK)**2.LT.2D0*PYR(0)) GOTO 100
+
+C...Ditto in QFD case, by numerical inversion of integrated spectrum.
+ ELSE
+ SZM=1D0-(PARJ(123)/ECM)**2
+ SZW=PARJ(123)*PARJ(124)/ECM**2
+ FXKL=FXK(XKL)
+ FXKU=FXK(XKU)
+ FXKD=1D-4*(FXKU-FXKL)
+ FXKR=FXKL+PYR(0)*(FXKU-FXKL)
+ NXK=0
+ 110 NXK=NXK+1
+ XK=0.5D0*(XKL+XKU)
+ FXKV=FXK(XK)
+ IF(FXKV.GT.FXKR) THEN
+ XKU=XK
+ FXKU=FXKV
+ ELSE
+ XKL=XK
+ FXKL=FXKV
+ ENDIF
+ IF(NXK.LT.15.AND.FXKU-FXKL.GT.FXKD) GOTO 110
+ XK=XKL+(XKU-XKL)*(FXKR-FXKL)/(FXKU-FXKL)
+ ENDIF
+ PAK=0.5D0*ECM*XK
+
+C...Photon polar and azimuthal angle.
+ PME=2D0*(PYMASS(11)/ECM)**2
+ 120 CTHM=PME*(2D0/PME)**PYR(0)
+ IF(1D0-(XK**2*CTHM*(1D0-0.5D0*CTHM)+2D0*(1D0-XK)*PME/MAX(PME,
+ &CTHM*(1D0-0.5D0*CTHM)))/(1D0+(1D0-XK)**2).LT.PYR(0)) GOTO 120
+ CTHE=1D0-CTHM
+ IF(PYR(0).GT.0.5D0) CTHE=-CTHE
+ STHE=SQRT(MAX(0D0,(CTHM-PME)*(2D0-CTHM)))
+ THEK=PYANGL(CTHE,STHE)
+ PHIK=PARU(2)*PYR(0)
+
+C...Rotation angle for hadronic system.
+ SGN=1D0
+ IF(0.5D0*(2D0-XK*(1D0-CTHE))**2/((2D0-XK)**2+(XK*CTHE)**2).GT.
+ &PYR(0)) SGN=-1D0
+ ALPK=ASIN(SGN*STHE*(XK-SGN*(2D0*SQRT(1D0-XK)-2D0+XK)*CTHE)/
+ &(2D0-XK*(1D0-SGN*CTHE)))
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYXKFL
+C...Selects flavour for produced qqbar pair.
+
+ SUBROUTINE PYXKFL(KFL,ECM,ECMC,KFLC)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYDAT1/,/PYDAT2/
+
+C...Calculate maximum weight in QED or QFD case.
+ IF(MSTJ(102).LE.1) THEN
+ RFMAX=4D0/9D0
+ ELSE
+ POLL=1D0-PARJ(131)*PARJ(132)
+ SFF=1D0/(16D0*PARU(102)*(1D0-PARU(102)))
+ SFW=ECMC**4/((ECMC**2-PARJ(123)**2)**2+(PARJ(123)*PARJ(124))**2)
+ SFI=SFW*(1D0-(PARJ(123)/ECMC)**2)
+ VE=4D0*PARU(102)-1D0
+ HF1I=SFI*SFF*(VE*POLL+PARJ(132)-PARJ(131))
+ HF1W=SFW*SFF**2*((VE**2+1D0)*POLL+2D0*VE*(PARJ(132)-PARJ(131)))
+ RFMAX=MAX(4D0/9D0*POLL-4D0/3D0*(1D0-8D0*PARU(102)/3D0)*HF1I+
+ & ((1D0-8D0*PARU(102)/3D0)**2+1D0)*HF1W,1D0/9D0*POLL+2D0/3D0*
+ & (-1D0+4D0*PARU(102)/3D0)*HF1I+((-1D0+4D0*PARU(102)/3D0)**2+
+ & 1D0)*HF1W)
+ ENDIF
+
+C...Choose flavour. Gives charge and velocity.
+ NTRY=0
+ 100 NTRY=NTRY+1
+ IF(NTRY.GT.100) THEN
+ CALL PYERRM(14,'(PYXKFL:) caught in an infinite loop')
+ KFLC=0
+ RETURN
+ ENDIF
+ KFLC=KFL
+ IF(KFL.LE.0) KFLC=1+INT(MSTJ(104)*PYR(0))
+ MSTJ(93)=1
+ PMQ=PYMASS(KFLC)
+ IF(ECM.LT.2D0*PMQ+PARJ(127)) GOTO 100
+ QF=KCHG(KFLC,1)/3D0
+ VQ=1D0
+ IF(MOD(MSTJ(103),2).EQ.1) VQ=SQRT(MAX(0D0,1D0-(2D0*PMQ/ECMC)**2))
+
+C...Calculate weight in QED or QFD case.
+ IF(MSTJ(102).LE.1) THEN
+ RF=QF**2
+ RFV=0.5D0*VQ*(3D0-VQ**2)*QF**2
+ ELSE
+ VF=SIGN(1D0,QF)-4D0*QF*PARU(102)
+ RF=QF**2*POLL-2D0*QF*VF*HF1I+(VF**2+1D0)*HF1W
+ RFV=0.5D0*VQ*(3D0-VQ**2)*(QF**2*POLL-2D0*QF*VF*HF1I+VF**2*HF1W)+
+ & VQ**3*HF1W
+ IF(RFV.GT.0D0) PARJ(171)=MIN(1D0,VQ**3*HF1W/RFV)
+ ENDIF
+
+C...Weighting or new event (radiative photon). Cross-section update.
+ IF(KFL.LE.0.AND.RF.LT.PYR(0)*RFMAX) GOTO 100
+ PARJ(158)=PARJ(158)+1D0
+ IF(ECMC.LT.2D0*PMQ+PARJ(127).OR.RFV.LT.PYR(0)*RF) KFLC=0
+ IF(MSTJ(107).LE.0.AND.KFLC.EQ.0) GOTO 100
+ IF(KFLC.NE.0) PARJ(159)=PARJ(159)+1D0
+ PARJ(144)=PARJ(157)*PARJ(159)/PARJ(158)
+ PARJ(148)=PARJ(144)*86.8D0/ECM**2
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYXJET
+C...Selects number of jets in matrix element approach.
+
+ SUBROUTINE PYXJET(ECM,NJET,CUT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+C...Local array and data.
+ DIMENSION ZHUT(5)
+ DATA ZHUT/3.0922D0, 6.2291D0, 7.4782D0, 7.8440D0, 8.2560D0/
+
+C...Trivial result for two-jets only, including parton shower.
+ IF(MSTJ(101).EQ.0.OR.MSTJ(101).EQ.5) THEN
+ CUT=0D0
+
+C...QCD and Abelian vector gluon theory: Q^2 for jet rate and R.
+ ELSEIF(MSTJ(109).EQ.0.OR.MSTJ(109).EQ.2) THEN
+ CF=4D0/3D0
+ IF(MSTJ(109).EQ.2) CF=1D0
+ IF(MSTJ(111).EQ.0) THEN
+ Q2=ECM**2
+ Q2R=ECM**2
+ ELSEIF(MSTU(111).EQ.0) THEN
+ PARJ(169)=MIN(1D0,PARJ(129))
+ Q2=PARJ(169)*ECM**2
+ PARJ(168)=MIN(1D0,MAX(PARJ(128),EXP(-12D0*PARU(1)/
+ & ((33D0-2D0*MSTU(112))*PARU(111)))))
+ Q2R=PARJ(168)*ECM**2
+ ELSE
+ PARJ(169)=MIN(1D0,MAX(PARJ(129),(2D0*PARU(112)/ECM)**2))
+ Q2=PARJ(169)*ECM**2
+ PARJ(168)=MIN(1D0,MAX(PARJ(128),PARU(112)/ECM,
+ & (2D0*PARU(112)/ECM)**2))
+ Q2R=PARJ(168)*ECM**2
+ ENDIF
+
+C...alpha_strong for R and R itself.
+ ALSPI=(3D0/4D0)*CF*PYALPS(Q2R)/PARU(1)
+ IF(IABS(MSTJ(101)).EQ.1) THEN
+ RQCD=1D0+ALSPI
+ ELSEIF(MSTJ(109).EQ.0) THEN
+ RQCD=1D0+ALSPI+(1.986D0-0.115D0*MSTU(118))*ALSPI**2
+ IF(MSTJ(111).EQ.1) RQCD=MAX(1D0,RQCD+
+ & (33D0-2D0*MSTU(112))/12D0*LOG(PARJ(168))*ALSPI**2)
+ ELSE
+ RQCD=1D0+ALSPI-(3D0/32D0+0.519D0*MSTU(118))*(4D0*ALSPI/3D0)**2
+ ENDIF
+
+C...alpha_strong for jet rate. Initial value for y cut.
+ ALSPI=(3D0/4D0)*CF*PYALPS(Q2)/PARU(1)
+ CUT=MAX(0.001D0,PARJ(125),(PARJ(126)/ECM)**2)
+ IF(IABS(MSTJ(101)).LE.1.OR.(MSTJ(109).EQ.0.AND.MSTJ(111).EQ.0))
+ & CUT=MAX(CUT,EXP(-SQRT(0.75D0/ALSPI))/2D0)
+ IF(MSTJ(110).EQ.2) CUT=MAX(0.01D0,MIN(0.05D0,CUT))
+
+C...Parametrization of first order three-jet cross-section.
+ 100 IF(MSTJ(101).EQ.0.OR.CUT.GE.0.25D0) THEN
+ PARJ(152)=0D0
+ ELSE
+ PARJ(152)=(2D0*ALSPI/3D0)*((3D0-6D0*CUT+2D0*LOG(CUT))*
+ & LOG(CUT/(1D0-2D0*CUT))+(2.5D0+1.5D0*CUT-6.571D0)*
+ & (1D0-3D0*CUT)+5.833D0*(1D0-3D0*CUT)**2-3.894D0*
+ & (1D0-3D0*CUT)**3+1.342D0*(1D0-3D0*CUT)**4)/RQCD
+ IF(MSTJ(109).EQ.2.AND.(MSTJ(101).EQ.2.OR.MSTJ(101).LE.-2))
+ & PARJ(152)=0D0
+ ENDIF
+
+C...Parametrization of second order three-jet cross-section.
+ IF(IABS(MSTJ(101)).LE.1.OR.MSTJ(101).EQ.3.OR.MSTJ(109).EQ.2.OR.
+ & CUT.GE.0.25D0) THEN
+ PARJ(153)=0D0
+ ELSEIF(MSTJ(110).LE.1) THEN
+ CT=LOG(1D0/CUT-2D0)
+ PARJ(153)=ALSPI**2*CT**2*(2.419D0+0.5989D0*CT+0.6782D0*CT**2-
+ & 0.2661D0*CT**3+0.01159D0*CT**4)/RQCD
+
+C...Interpolation in second/first order ratio for Zhu parametrization.
+ ELSEIF(MSTJ(110).EQ.2) THEN
+ IZA=0
+ DO 110 IY=1,5
+ IF(ABS(CUT-0.01D0*IY).LT.0.0001D0) IZA=IY
+ 110 CONTINUE
+ IF(IZA.NE.0) THEN
+ ZHURAT=ZHUT(IZA)
+ ELSE
+ IZ=100D0*CUT
+ ZHURAT=ZHUT(IZ)+(100D0*CUT-IZ)*(ZHUT(IZ+1)-ZHUT(IZ))
+ ENDIF
+ PARJ(153)=ALSPI*PARJ(152)*ZHURAT
+ ENDIF
+
+C...Shift in second order three-jet cross-section with optimized Q^2.
+ IF(MSTJ(111).EQ.1.AND.IABS(MSTJ(101)).GE.2.AND.MSTJ(101).NE.3
+ & .AND.CUT.LT.0.25D0) PARJ(153)=PARJ(153)+
+ & (33D0-2D0*MSTU(112))/12D0*LOG(PARJ(169))*ALSPI*PARJ(152)
+
+C...Parametrization of second order four-jet cross-section.
+ IF(IABS(MSTJ(101)).LE.1.OR.CUT.GE.0.125D0) THEN
+ PARJ(154)=0D0
+ ELSE
+ CT=LOG(1D0/CUT-5D0)
+ IF(CUT.LE.0.018D0) THEN
+ XQQGG=6.349D0-4.330D0*CT+0.8304D0*CT**2
+ IF(MSTJ(109).EQ.2) XQQGG=(4D0/3D0)**2*(3.035D0-2.091D0*CT+
+ & 0.4059D0*CT**2)
+ XQQQQ=1.25D0*(-0.1080D0+0.01486D0*CT+0.009364D0*CT**2)
+ IF(MSTJ(109).EQ.2) XQQQQ=8D0*XQQQQ
+ ELSE
+ XQQGG=-0.09773D0+0.2959D0*CT-0.2764D0*CT**2+0.08832D0*CT**3
+ IF(MSTJ(109).EQ.2) XQQGG=(4D0/3D0)**2*(-0.04079D0+
+ & 0.1340D0*CT-0.1326D0*CT**2+0.04365D0*CT**3)
+ XQQQQ=1.25D0*(0.003661D0-0.004888D0*CT-0.001081D0*CT**2+
+ & 0.002093D0*CT**3)
+ IF(MSTJ(109).EQ.2) XQQQQ=8D0*XQQQQ
+ ENDIF
+ PARJ(154)=ALSPI**2*CT**2*(XQQGG+XQQQQ)/RQCD
+ PARJ(155)=XQQQQ/(XQQGG+XQQQQ)
+ ENDIF
+
+C...If negative three-jet rate, change y' optimization parameter.
+ IF(MSTJ(111).EQ.1.AND.PARJ(152)+PARJ(153).LT.0D0.AND.
+ & PARJ(169).LT.0.99D0) THEN
+ PARJ(169)=MIN(1D0,1.2D0*PARJ(169))
+ Q2=PARJ(169)*ECM**2
+ ALSPI=(3D0/4D0)*CF*PYALPS(Q2)/PARU(1)
+ GOTO 100
+ ENDIF
+
+C...If too high cross-section, use harder cuts, or fail.
+ IF(PARJ(152)+PARJ(153)+PARJ(154).GE.1) THEN
+ IF(MSTJ(110).EQ.2.AND.CUT.GT.0.0499D0.AND.MSTJ(111).EQ.1.AND.
+ & PARJ(169).LT.0.99D0) THEN
+ PARJ(169)=MIN(1D0,1.2D0*PARJ(169))
+ Q2=PARJ(169)*ECM**2
+ ALSPI=(3D0/4D0)*CF*PYALPS(Q2)/PARU(1)
+ GOTO 100
+ ELSEIF(MSTJ(110).EQ.2.AND.CUT.GT.0.0499D0) THEN
+ CALL PYERRM(26,
+ & '(PYXJET:) no allowed y cut value for Zhu parametrization')
+ ENDIF
+ CUT=0.26D0*(4D0*CUT)**(PARJ(152)+PARJ(153)+
+ & PARJ(154))**(-1D0/3D0)
+ IF(MSTJ(110).EQ.2) CUT=MAX(0.01D0,MIN(0.05D0,CUT))
+ GOTO 100
+ ENDIF
+
+C...Scalar gluon (first order only).
+ ELSE
+ ALSPI=PYALPS(ECM**2)/PARU(1)
+ CUT=MAX(0.001D0,PARJ(125),(PARJ(126)/ECM)**2,EXP(-3D0/ALSPI))
+ PARJ(152)=0D0
+ IF(CUT.LT.0.25D0) PARJ(152)=(ALSPI/3D0)*((1D0-2D0*CUT)*
+ & LOG((1D0-2D0*CUT)/CUT)+0.5D0*(9D0*CUT**2-1D0))
+ PARJ(153)=0D0
+ PARJ(154)=0D0
+ ENDIF
+
+C...Select number of jets.
+ PARJ(150)=CUT
+ IF(MSTJ(101).EQ.0.OR.MSTJ(101).EQ.5) THEN
+ NJET=2
+ ELSEIF(MSTJ(101).LE.0) THEN
+ NJET=MIN(4,2-MSTJ(101))
+ ELSE
+ RNJ=PYR(0)
+ NJET=2
+ IF(PARJ(152)+PARJ(153)+PARJ(154).GT.RNJ) NJET=3
+ IF(PARJ(154).GT.RNJ) NJET=4
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYX3JT
+C...Selects the kinematical variables of three-jet events.
+
+ SUBROUTINE PYX3JT(NJET,CUT,KFL,ECM,X1,X2)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+C...Local array.
+ DIMENSION ZHUP(5,12)
+
+C...Coefficients of Zhu second order parametrization.
+ DATA ((ZHUP(IC1,IC2),IC2=1,12),IC1=1,5)/
+ &18.29D0, 89.56D0, 4.541D0, -52.09D0, -109.8D0, 24.90D0,
+ &11.63D0, 3.683D0, 17.50D0,0.002440D0, -1.362D0,-0.3537D0,
+ &11.42D0, 6.299D0, -22.55D0, -8.915D0, 59.25D0, -5.855D0,
+ &-32.85D0, -1.054D0, -16.90D0,0.006489D0,-0.8156D0,0.01095D0,
+ &7.847D0, -3.964D0, -35.83D0, 1.178D0, 29.39D0, 0.2806D0,
+ &47.82D0, -12.36D0, -56.72D0, 0.04054D0,-0.4365D0, 0.6062D0,
+ &5.441D0, -56.89D0, -50.27D0, 15.13D0, 114.3D0, -18.19D0,
+ &97.05D0, -1.890D0, -139.9D0, 0.08153D0,-0.4984D0, 0.9439D0,
+ &-17.65D0, 51.44D0, -58.32D0, 70.95D0, -255.7D0, -78.99D0,
+ &476.9D0, 29.65D0, -239.3D0, 0.4745D0, -1.174D0, 6.081D0/
+
+C...Dilogarithm of x for x<0.5 (x>0.5 obtained by analytic trick).
+ DILOG(X)=X+X**2/4D0+X**3/9D0+X**4/16D0+X**5/25D0+X**6/36D0+
+ &X**7/49D0
+
+C...Event type. Mass effect factors and other common constants.
+ MSTJ(120)=2
+ MSTJ(121)=0
+ PMQ=PYMASS(KFL)
+ QME=(2D0*PMQ/ECM)**2
+ IF(MSTJ(109).NE.1) THEN
+ CUTL=LOG(CUT)
+ CUTD=LOG(1D0/CUT-2D0)
+ IF(MSTJ(109).EQ.0) THEN
+ CF=4D0/3D0
+ CN=3D0
+ TR=2D0
+ WTMX=MIN(20D0,37D0-6D0*CUTD)
+ IF(MSTJ(110).EQ.2) WTMX=2D0*(7.5D0+80D0*CUT)
+ ELSE
+ CF=1D0
+ CN=0D0
+ TR=12D0
+ WTMX=0D0
+ ENDIF
+
+C...Alpha_strong and effects of optimized Q^2 scale. Maximum weight.
+ ALS2PI=PARU(118)/PARU(2)
+ WTOPT=0D0
+ IF(MSTJ(111).EQ.1) WTOPT=(33D0-2D0*MSTU(112))/6D0*
+ & LOG(PARJ(169))*ALS2PI
+ WTMAX=MAX(0D0,1D0+WTOPT+ALS2PI*WTMX)
+
+C...Choose three-jet events in allowed region.
+ 100 NJET=3
+ 110 Y13L=CUTL+CUTD*PYR(0)
+ Y23L=CUTL+CUTD*PYR(0)
+ Y13=EXP(Y13L)
+ Y23=EXP(Y23L)
+ Y12=1D0-Y13-Y23
+ IF(Y12.LE.CUT) GOTO 110
+ IF(Y13**2+Y23**2+2D0*Y12.LE.2D0*PYR(0)) GOTO 110
+
+C...Second order corrections.
+ IF(MSTJ(101).EQ.2.AND.MSTJ(110).LE.1) THEN
+ Y12L=LOG(Y12)
+ Y13M=LOG(1D0-Y13)
+ Y23M=LOG(1D0-Y23)
+ Y12M=LOG(1D0-Y12)
+ IF(Y13.LE.0.5D0) Y13I=DILOG(Y13)
+ IF(Y13.GE.0.5D0) Y13I=1.644934D0-Y13L*Y13M-DILOG(1D0-Y13)
+ IF(Y23.LE.0.5D0) Y23I=DILOG(Y23)
+ IF(Y23.GE.0.5D0) Y23I=1.644934D0-Y23L*Y23M-DILOG(1D0-Y23)
+ IF(Y12.LE.0.5D0) Y12I=DILOG(Y12)
+ IF(Y12.GE.0.5D0) Y12I=1.644934D0-Y12L*Y12M-DILOG(1D0-Y12)
+ WT1=(Y13**2+Y23**2+2D0*Y12)/(Y13*Y23)
+ WT2=CF*(-2D0*(CUTL-Y12L)**2-3D0*CUTL-1D0+3.289868D0+
+ & 2D0*(2D0*CUTL-Y12L)*CUT/Y12)+
+ & CN*((CUTL-Y12L)**2-(CUTL-Y13L)**2-(CUTL-Y23L)**2-
+ & 11D0*CUTL/6D0+67D0/18D0+1.644934D0-(2D0*CUTL-Y12L)*CUT/Y12+
+ & (2D0*CUTL-Y13L)*CUT/Y13+(2D0*CUTL-Y23L)*CUT/Y23)+
+ & TR*(2D0*CUTL/3D0-10D0/9D0)+
+ & CF*(Y12/(Y12+Y13)+Y12/(Y12+Y23)+(Y12+Y23)/Y13+(Y12+Y13)/Y23+
+ & Y13L*(4D0*Y12**2+2D0*Y12*Y13+4D0*Y12*Y23+Y13*Y23)/
+ & (Y12+Y23)**2+Y23L*(4D0*Y12**2+2D0*Y12*Y23+4D0*Y12*Y13+
+ & Y13*Y23)/(Y12+Y13)**2)/WT1+
+ & CN*(Y13L*Y13/(Y12+Y23)+Y23L*Y23/(Y12+Y13))/WT1+(CN-2D0*CF)*
+ & ((Y12**2+(Y12+Y13)**2)*(Y12L*Y23L-Y12L*Y12M-Y23L*
+ & Y23M+1.644934D0-Y12I-Y23I)/(Y13*Y23)+(Y12**2+(Y12+Y23)**2)*
+ & (Y12L*Y13L-Y12L*Y12M-Y13L*Y13M+1.644934D0-Y12I-Y13I)/
+ & (Y13*Y23)+(Y13**2+Y23**2)/(Y13*Y23*(Y13+Y23))-
+ & 2D0*Y12L*Y12**2/(Y13+Y23)**2-4D0*Y12L*Y12/(Y13+Y23))/WT1-
+ & CN*(Y13L*Y23L-Y13L*Y13M-Y23L*Y23M+1.644934D0-Y13I-Y23I)
+ IF(1D0+WTOPT+ALS2PI*WT2.LE.0D0) MSTJ(121)=1
+ IF(1D0+WTOPT+ALS2PI*WT2.LE.WTMAX*PYR(0)) GOTO 110
+ PARJ(156)=(WTOPT+ALS2PI*WT2)/(1D0+WTOPT+ALS2PI*WT2)
+
+ ELSEIF(MSTJ(101).EQ.2.AND.MSTJ(110).EQ.2) THEN
+C...Second order corrections; Zhu parametrization of ERT.
+ ZX=(Y23-Y13)**2
+ ZY=1D0-Y12
+ IZA=0
+ DO 120 IY=1,5
+ IF(ABS(CUT-0.01D0*IY).LT.0.0001D0) IZA=IY
+ 120 CONTINUE
+ IF(IZA.NE.0) THEN
+ IZ=IZA
+ WT2=ZHUP(IZ,1)+ZHUP(IZ,2)*ZX+ZHUP(IZ,3)*ZX**2+(ZHUP(IZ,4)+
+ & ZHUP(IZ,5)*ZX)*ZY+(ZHUP(IZ,6)+ZHUP(IZ,7)*ZX)*ZY**2+
+ & (ZHUP(IZ,8)+ZHUP(IZ,9)*ZX)*ZY**3+ZHUP(IZ,10)/(ZX-ZY**2)+
+ & ZHUP(IZ,11)/(1D0-ZY)+ZHUP(IZ,12)/ZY
+ ELSE
+ IZ=100D0*CUT
+ WTL=ZHUP(IZ,1)+ZHUP(IZ,2)*ZX+ZHUP(IZ,3)*ZX**2+(ZHUP(IZ,4)+
+ & ZHUP(IZ,5)*ZX)*ZY+(ZHUP(IZ,6)+ZHUP(IZ,7)*ZX)*ZY**2+
+ & (ZHUP(IZ,8)+ZHUP(IZ,9)*ZX)*ZY**3+ZHUP(IZ,10)/(ZX-ZY**2)+
+ & ZHUP(IZ,11)/(1D0-ZY)+ZHUP(IZ,12)/ZY
+ IZ=IZ+1
+ WTU=ZHUP(IZ,1)+ZHUP(IZ,2)*ZX+ZHUP(IZ,3)*ZX**2+(ZHUP(IZ,4)+
+ & ZHUP(IZ,5)*ZX)*ZY+(ZHUP(IZ,6)+ZHUP(IZ,7)*ZX)*ZY**2+
+ & (ZHUP(IZ,8)+ZHUP(IZ,9)*ZX)*ZY**3+ZHUP(IZ,10)/(ZX-ZY**2)+
+ & ZHUP(IZ,11)/(1D0-ZY)+ZHUP(IZ,12)/ZY
+ WT2=WTL+(WTU-WTL)*(100D0*CUT+1D0-IZ)
+ ENDIF
+ IF(1D0+WTOPT+2D0*ALS2PI*WT2.LE.0D0) MSTJ(121)=1
+ IF(1D0+WTOPT+2D0*ALS2PI*WT2.LE.WTMAX*PYR(0)) GOTO 110
+ PARJ(156)=(WTOPT+2D0*ALS2PI*WT2)/(1D0+WTOPT+2D0*ALS2PI*WT2)
+ ENDIF
+
+C...Impose mass cuts (gives two jets). For fixed jet number new try.
+ X1=1D0-Y23
+ X2=1D0-Y13
+ X3=1D0-Y12
+ IF(4D0*Y23*Y13*Y12/X3**2.LE.QME) NJET=2
+ IF(MOD(MSTJ(103),4).GE.2.AND.IABS(MSTJ(101)).LE.1.AND.QME*X3+
+ & 0.5D0*QME**2+(0.5D0*QME+0.25D0*QME**2)*((1D0-X2)/(1D0-X1)+
+ & (1D0-X1)/(1D0-X2)).GT.(X1**2+X2**2)*PYR(0)) NJET=2
+ IF(MSTJ(101).EQ.-1.AND.NJET.EQ.2) GOTO 100
+
+C...Scalar gluon model (first order only, no mass effects).
+ ELSE
+ 130 NJET=3
+ 140 X3=SQRT(4D0*CUT**2+PYR(0)*((1D0-CUT)**2-4D0*CUT**2))
+ IF(LOG((X3-CUT)/CUT).LE.PYR(0)*LOG((1D0-2D0*CUT)/CUT)) GOTO 140
+ YD=SIGN(2D0*CUT*((X3-CUT)/CUT)**PYR(0)-X3,PYR(0)-0.5D0)
+ X1=1D0-0.5D0*(X3+YD)
+ X2=1D0-0.5D0*(X3-YD)
+ IF(4D0*(1D0-X1)*(1D0-X2)*(1D0-X3)/X3**2.LE.QME) NJET=2
+ IF(MSTJ(102).GE.2) THEN
+ IF(X3**2-2D0*(1D0+X3)*(1D0-X1)*(1D0-X2)*PARJ(171).LT.
+ & X3**2*PYR(0)) NJET=2
+ ENDIF
+ IF(MSTJ(101).EQ.-1.AND.NJET.EQ.2) GOTO 130
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYX4JT
+C...Selects the kinematical variables of four-jet events.
+
+ SUBROUTINE PYX4JT(NJET,CUT,KFL,ECM,KFLN,X1,X2,X4,X12,X14)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+C...Local arrays.
+ DIMENSION WTA(4),WTB(4),WTC(4),WTD(4),WTE(4)
+
+C...Common constants. Colour factors for QCD and Abelian gluon theory.
+ PMQ=PYMASS(KFL)
+ QME=(2D0*PMQ/ECM)**2
+ CT=LOG(1D0/CUT-5D0)
+ IF(MSTJ(109).EQ.0) THEN
+ CF=4D0/3D0
+ CN=3D0
+ TR=2.5D0
+ ELSE
+ CF=1D0
+ CN=0D0
+ TR=15D0
+ ENDIF
+
+C...Choice of process (qqbargg or qqbarqqbar).
+ 100 NJET=4
+ IT=1
+ IF(PARJ(155).GT.PYR(0)) IT=2
+ IF(MSTJ(101).LE.-3) IT=-MSTJ(101)-2
+ IF(IT.EQ.1) WTMX=0.7D0/CUT**2
+ IF(IT.EQ.1.AND.MSTJ(109).EQ.2) WTMX=0.6D0/CUT**2
+ IF(IT.EQ.2) WTMX=0.1125D0*CF*TR/CUT**2
+ ID=1
+
+C...Sample the five kinematical variables (for qqgg preweighted in y34).
+ 110 Y134=3D0*CUT+(1D0-6D0*CUT)*PYR(0)
+ Y234=3D0*CUT+(1D0-6D0*CUT)*PYR(0)
+ IF(IT.EQ.1) Y34=(1D0-5D0*CUT)*EXP(-CT*PYR(0))
+ IF(IT.EQ.2) Y34=CUT+(1D0-6D0*CUT)*PYR(0)
+ IF(Y34.LE.Y134+Y234-1D0.OR.Y34.GE.Y134*Y234) GOTO 110
+ VT=PYR(0)
+ CP=COS(PARU(1)*PYR(0))
+ Y14=(Y134-Y34)*VT
+ Y13=Y134-Y14-Y34
+ VB=Y34*(1D0-Y134-Y234+Y34)/((Y134-Y34)*(Y234-Y34))
+ Y24=0.5D0*(Y234-Y34)*(1D0-4D0*SQRT(MAX(0D0,VT*(1D0-VT)*
+ &VB*(1D0-VB)))*CP-(1D0-2D0*VT)*(1D0-2D0*VB))
+ Y23=Y234-Y34-Y24
+ Y12=1D0-Y134-Y23-Y24
+ IF(MIN(Y12,Y13,Y14,Y23,Y24).LE.CUT) GOTO 110
+ Y123=Y12+Y13+Y23
+ Y124=Y12+Y14+Y24
+
+C...Calculate matrix elements for qqgg or qqqq process.
+ IC=0
+ WTTOT=0D0
+ 120 IC=IC+1
+ IF(IT.EQ.1) THEN
+ WTA(IC)=(Y12*Y34**2-Y13*Y24*Y34+Y14*Y23*Y34+3D0*Y12*Y23*Y34+
+ & 3D0*Y12*Y14*Y34+4D0*Y12**2*Y34-Y13*Y23*Y24+2D0*Y12*Y23*Y24-
+ & Y13*Y14*Y24-2D0*Y12*Y13*Y24+2D0*Y12**2*Y24+Y14*Y23**2+2D0*Y12*
+ & Y23**2+Y14**2*Y23+4D0*Y12*Y14*Y23+4D0*Y12**2*Y23+2D0*Y12*Y14**2+
+ & 2D0*Y12*Y13*Y14+4D0*Y12**2*Y14+2D0*Y12**2*Y13+2D0*Y12**3)/
+ & (2D0*Y13*Y134*Y234*Y24)+(Y24*Y34+Y12*Y34+Y13*Y24-
+ & Y14*Y23+Y12*Y13)/(Y13*Y134**2)+2D0*Y23*(1D0-Y13)/
+ & (Y13*Y134*Y24)+Y34/(2D0*Y13*Y24)
+ WTB(IC)=(Y12*Y24*Y34+Y12*Y14*Y34-Y13*Y24**2+Y13*Y14*Y24+2D0*Y12*
+ & Y14*Y24)/(Y13*Y134*Y23*Y14)+Y12*(1D0+Y34)*Y124/(Y134*Y234*Y14*
+ & Y24)-(2D0*Y13*Y24+Y14**2+Y13*Y23+2D0*Y12*Y13)/(Y13*Y134*Y14)+
+ & Y12*Y123*Y124/(2D0*Y13*Y14*Y23*Y24)
+ WTC(IC)=-(5D0*Y12*Y34**2+2D0*Y12*Y24*Y34+2D0*Y12*Y23*Y34+
+ & 2D0*Y12*Y14*Y34+2D0*Y12*Y13*Y34+4D0*Y12**2*Y34-Y13*Y24**2+
+ & Y14*Y23*Y24+Y13*Y23*Y24+Y13*Y14*Y24-Y12*Y14*Y24-Y13**2*Y24-
+ & 3D0*Y12*Y13*Y24-Y14*Y23**2-Y14**2*Y23+Y13*Y14*Y23-
+ & 3D0*Y12*Y14*Y23-Y12*Y13*Y23)/(4D0*Y134*Y234*Y34**2)+
+ & (3D0*Y12*Y34**2-3D0*Y13*Y24*Y34+3D0*Y12*Y24*Y34+
+ & 3D0*Y14*Y23*Y34-Y13*Y24**2-Y12*Y23*Y34+6D0*Y12*Y14*Y34+
+ & 2D0*Y12*Y13*Y34-2D0*Y12**2*Y34+Y14*Y23*Y24-3D0*Y13*Y23*Y24-
+ & 2D0*Y13*Y14*Y24+4D0*Y12*Y14*Y24+2D0*Y12*Y13*Y24+
+ & 3D0*Y14*Y23**2+2D0*Y14**2*Y23+2D0*Y14**2*Y12+
+ & 2D0*Y12**2*Y14+6D0*Y12*Y14*Y23-2D0*Y12*Y13**2-
+ & 2D0*Y12**2*Y13)/(4D0*Y13*Y134*Y234*Y34)
+ WTC(IC)=WTC(IC)+(2D0*Y12*Y34**2-2D0*Y13*Y24*Y34+Y12*Y24*Y34+
+ & 4D0*Y13*Y23*Y34+4D0*Y12*Y14*Y34+2D0*Y12*Y13*Y34+2D0*Y12**2*Y34-
+ & Y13*Y24**2+3D0*Y14*Y23*Y24+4D0*Y13*Y23*Y24-2D0*Y13*Y14*Y24+
+ & 4D0*Y12*Y14*Y24+2D0*Y12*Y13*Y24+2D0*Y14*Y23**2+4D0*Y13*Y23**2+
+ & 2D0*Y13*Y14*Y23+2D0*Y12*Y14*Y23+4D0*Y12*Y13*Y23+2D0*Y12*Y14**2+
+ & 4D0*Y12**2*Y13+4D0*Y12*Y13*Y14+2D0*Y12**2*Y14)/
+ & (4D0*Y13*Y134*Y24*Y34)-(Y12*Y34**2-2D0*Y14*Y24*Y34-
+ & 2D0*Y13*Y24*Y34-Y14*Y23*Y34+Y13*Y23*Y34+Y12*Y14*Y34+
+ & 2D0*Y12*Y13*Y34-2D0*Y14**2*Y24-4D0*Y13*Y14*Y24-
+ & 4D0*Y13**2*Y24-Y14**2*Y23-Y13**2*Y23+Y12*Y13*Y14-
+ & Y12*Y13**2)/(2D0*Y13*Y34*Y134**2)+(Y12*Y34**2-
+ & 4D0*Y14*Y24*Y34-2D0*Y13*Y24*Y34-2D0*Y14*Y23*Y34-
+ & 4D0*Y13*Y23*Y34-4D0*Y12*Y14*Y34-4D0*Y12*Y13*Y34-
+ & 2D0*Y13*Y14*Y24+2D0*Y13**2*Y24+2D0*Y14**2*Y23-
+ & 2D0*Y13*Y14*Y23-Y12*Y14**2-6D0*Y12*Y13*Y14-
+ & Y12*Y13**2)/(4D0*Y34**2*Y134**2)
+ WTTOT=WTTOT+Y34*CF*(CF*WTA(IC)+(CF-0.5D0*CN)*WTB(IC)+
+ & CN*WTC(IC))/8D0
+ ELSE
+ WTD(IC)=(Y13*Y23*Y34+Y12*Y23*Y34-Y12**2*Y34+Y13*Y23*Y24+2D0*Y12*
+ & Y23*Y24-Y14*Y23**2+Y12*Y13*Y24+Y12*Y14*Y23+Y12*Y13*Y14)/(Y13**2*
+ & Y123**2)-(Y12*Y34**2-Y13*Y24*Y34+Y12*Y24*Y34-Y14*Y23*Y34-Y12*
+ & Y23*Y34-Y13*Y24**2+Y14*Y23*Y24-Y13*Y23*Y24-Y13**2*Y24+Y14*
+ & Y23**2)/(Y13**2*Y123*Y134)+(Y13*Y14*Y12+Y34*Y14*Y12-Y34**2*Y12+
+ & Y13*Y14*Y24+2D0*Y34*Y14*Y24-Y23*Y14**2+Y34*Y13*Y24+Y34*Y23*Y14+
+ & Y34*Y13*Y23)/(Y13**2*Y134**2)-(Y34*Y12**2-Y13*Y24*Y12+Y34*Y24*
+ & Y12-Y23*Y14*Y12-Y34*Y14*Y12-Y13*Y24**2+Y23*Y14*Y24-Y13*Y14*Y24-
+ & Y13**2*Y24+Y23*Y14**2)/(Y13**2*Y134*Y123)
+ WTE(IC)=(Y12*Y34*(Y23-Y24+Y14+Y13)+Y13*Y24**2-Y14*Y23*Y24+Y13*
+ & Y23*Y24+Y13*Y14*Y24+Y13**2*Y24-Y14*Y23*(Y14+Y23+Y13))/(Y13*Y23*
+ & Y123*Y134)-Y12*(Y12*Y34-Y23*Y24-Y13*Y24-Y14*Y23-Y14*Y13)/(Y13*
+ & Y23*Y123**2)-(Y14+Y13)*(Y24+Y23)*Y34/(Y13*Y23*Y134*Y234)+
+ & (Y12*Y34*(Y14-Y24+Y23+Y13)+Y13*Y24**2-Y23*Y14*Y24+Y13*Y14*Y24+
+ & Y13*Y23*Y24+Y13**2*Y24-Y23*Y14*(Y14+Y23+Y13))/(Y13*Y14*Y134*
+ & Y123)-Y34*(Y34*Y12-Y14*Y24-Y13*Y24-Y23*Y14-Y23*Y13)/(Y13*Y14*
+ & Y134**2)-(Y23+Y13)*(Y24+Y14)*Y12/(Y13*Y14*Y123*Y124)
+ WTTOT=WTTOT+CF*(TR*WTD(IC)+(CF-0.5D0*CN)*WTE(IC))/16D0
+ ENDIF
+
+C...Permutations of momenta in matrix element. Weighting.
+ 130 IF(IC.EQ.1.OR.IC.EQ.3.OR.ID.EQ.2.OR.ID.EQ.3) THEN
+ YSAV=Y13
+ Y13=Y14
+ Y14=YSAV
+ YSAV=Y23
+ Y23=Y24
+ Y24=YSAV
+ YSAV=Y123
+ Y123=Y124
+ Y124=YSAV
+ ENDIF
+ IF(IC.EQ.2.OR.IC.EQ.4.OR.ID.EQ.3.OR.ID.EQ.4) THEN
+ YSAV=Y13
+ Y13=Y23
+ Y23=YSAV
+ YSAV=Y14
+ Y14=Y24
+ Y24=YSAV
+ YSAV=Y134
+ Y134=Y234
+ Y234=YSAV
+ ENDIF
+ IF(IC.LE.3) GOTO 120
+ IF(ID.EQ.1.AND.WTTOT.LT.PYR(0)*WTMX) GOTO 110
+ IC=5
+
+C...qqgg events: string configuration and event type.
+ IF(IT.EQ.1) THEN
+ IF(MSTJ(109).EQ.0.AND.ID.EQ.1) THEN
+ PARJ(156)=Y34*(2D0*(WTA(1)+WTA(2)+WTA(3)+WTA(4))+4D0*(WTC(1)+
+ & WTC(2)+WTC(3)+WTC(4)))/(9D0*WTTOT)
+ IF(WTA(2)+WTA(4)+2D0*(WTC(2)+WTC(4)).GT.PYR(0)*(WTA(1)+WTA(2)+
+ & WTA(3)+WTA(4)+2D0*(WTC(1)+WTC(2)+WTC(3)+WTC(4)))) ID=2
+ IF(ID.EQ.2) GOTO 130
+ ELSEIF(MSTJ(109).EQ.2.AND.ID.EQ.1) THEN
+ PARJ(156)=Y34*(WTA(1)+WTA(2)+WTA(3)+WTA(4))/(8D0*WTTOT)
+ IF(WTA(2)+WTA(4).GT.PYR(0)*(WTA(1)+WTA(2)+WTA(3)+WTA(4))) ID=2
+ IF(ID.EQ.2) GOTO 130
+ ENDIF
+ MSTJ(120)=3
+ IF(MSTJ(109).EQ.0.AND.0.5D0*Y34*(WTC(1)+WTC(2)+WTC(3)+
+ & WTC(4)).GT.PYR(0)*WTTOT) MSTJ(120)=4
+ KFLN=21
+
+C...Mass cuts. Kinematical variables out.
+ IF(Y12.LE.CUT+QME) NJET=2
+ IF(NJET.EQ.2) GOTO 150
+ Q12=0.5D0*(1D0-SQRT(1D0-QME/Y12))
+ X1=1D0-(1D0-Q12)*Y234-Q12*Y134
+ X4=1D0-(1D0-Q12)*Y134-Q12*Y234
+ X2=1D0-Y124
+ X12=(1D0-Q12)*Y13+Q12*Y23
+ X14=Y12-0.5D0*QME
+ IF(Y134*Y234/((1D0-X1)*(1D0-X4)).LE.PYR(0)) NJET=2
+
+C...qqbarqqbar events: string configuration, choose new flavour.
+ ELSE
+ IF(ID.EQ.1) THEN
+ WTR=PYR(0)*(WTD(1)+WTD(2)+WTD(3)+WTD(4))
+ IF(WTR.LT.WTD(2)+WTD(3)+WTD(4)) ID=2
+ IF(WTR.LT.WTD(3)+WTD(4)) ID=3
+ IF(WTR.LT.WTD(4)) ID=4
+ IF(ID.GE.2) GOTO 130
+ ENDIF
+ MSTJ(120)=5
+ PARJ(156)=CF*TR*(WTD(1)+WTD(2)+WTD(3)+WTD(4))/(16D0*WTTOT)
+ 140 KFLN=1+INT(5D0*PYR(0))
+ IF(KFLN.NE.KFL.AND.0.2D0*PARJ(156).LE.PYR(0)) GOTO 140
+ IF(KFLN.EQ.KFL.AND.1D0-0.8D0*PARJ(156).LE.PYR(0)) GOTO 140
+ IF(KFLN.GT.MSTJ(104)) NJET=2
+ PMQN=PYMASS(KFLN)
+ QMEN=(2D0*PMQN/ECM)**2
+
+C...Mass cuts. Kinematical variables out.
+ IF(Y24.LE.CUT+QME.OR.Y13.LE.1.1D0*QMEN) NJET=2
+ IF(NJET.EQ.2) GOTO 150
+ Q24=0.5D0*(1D0-SQRT(1D0-QME/Y24))
+ Q13=0.5D0*(1D0-SQRT(1D0-QMEN/Y13))
+ X1=1D0-(1D0-Q24)*Y123-Q24*Y134
+ X4=1D0-(1D0-Q24)*Y134-Q24*Y123
+ X2=1D0-(1D0-Q13)*Y234-Q13*Y124
+ X12=(1D0-Q24)*((1D0-Q13)*Y14+Q13*Y34)+Q24*((1D0-Q13)*Y12+
+ & Q13*Y23)
+ X14=Y24-0.5D0*QME
+ X34=(1D0-Q24)*((1D0-Q13)*Y23+Q13*Y12)+Q24*((1D0-Q13)*Y34+
+ & Q13*Y14)
+ IF(PMQ**2+PMQN**2+MIN(X12,X34)*ECM**2.LE.
+ & (PARJ(127)+PMQ+PMQN)**2) NJET=2
+ IF(Y123*Y134/((1D0-X1)*(1D0-X4)).LE.PYR(0)) NJET=2
+ ENDIF
+ 150 IF(MSTJ(101).LE.-2.AND.NJET.EQ.2) GOTO 100
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYXDIF
+C...Gives the angular orientation of events.
+
+ SUBROUTINE PYXDIF(NC,NJET,KFL,ECM,CHI,THE,PHI)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Charge. Factors depending on polarization for QED case.
+ QF=KCHG(KFL,1)/3D0
+ POLL=1D0-PARJ(131)*PARJ(132)
+ POLD=PARJ(132)-PARJ(131)
+ IF(MSTJ(102).LE.1.OR.MSTJ(109).EQ.1) THEN
+ HF1=POLL
+ HF2=0D0
+ HF3=PARJ(133)**2
+ HF4=0D0
+
+C...Factors depending on flavour, energy and polarization for QFD case.
+ ELSE
+ SFF=1D0/(16D0*PARU(102)*(1D0-PARU(102)))
+ SFW=ECM**4/((ECM**2-PARJ(123)**2)**2+(PARJ(123)*PARJ(124))**2)
+ SFI=SFW*(1D0-(PARJ(123)/ECM)**2)
+ AE=-1D0
+ VE=4D0*PARU(102)-1D0
+ AF=SIGN(1D0,QF)
+ VF=AF-4D0*QF*PARU(102)
+ HF1=QF**2*POLL-2D0*QF*VF*SFI*SFF*(VE*POLL-AE*POLD)+
+ & (VF**2+AF**2)*SFW*SFF**2*((VE**2+AE**2)*POLL-2D0*VE*AE*POLD)
+ HF2=-2D0*QF*AF*SFI*SFF*(AE*POLL-VE*POLD)+2D0*VF*AF*SFW*SFF**2*
+ & (2D0*VE*AE*POLL-(VE**2+AE**2)*POLD)
+ HF3=PARJ(133)**2*(QF**2-2D0*QF*VF*SFI*SFF*VE+(VF**2+AF**2)*
+ & SFW*SFF**2*(VE**2-AE**2))
+ HF4=-PARJ(133)**2*2D0*QF*VF*SFW*(PARJ(123)*PARJ(124)/ECM**2)*
+ & SFF*AE
+ ENDIF
+
+C...Mass factor. Differential cross-sections for two-jet events.
+ SQ2=SQRT(2D0)
+ QME=0D0
+ IF(MSTJ(103).GE.4.AND.IABS(MSTJ(101)).LE.1.AND.MSTJ(102).LE.1.AND.
+ &MSTJ(109).NE.1) QME=(2D0*PYMASS(KFL)/ECM)**2
+ IF(NJET.EQ.2) THEN
+ SIGU=4D0*SQRT(1D0-QME)
+ SIGL=2D0*QME*SQRT(1D0-QME)
+ SIGT=0D0
+ SIGI=0D0
+ SIGA=0D0
+ SIGP=4D0
+
+C...Kinematical variables. Reduce four-jet event to three-jet one.
+ ELSE
+ IF(NJET.EQ.3) THEN
+ X1=2D0*P(NC+1,4)/ECM
+ X2=2D0*P(NC+3,4)/ECM
+ ELSE
+ ECMR=P(NC+1,4)+P(NC+4,4)+SQRT((P(NC+2,1)+P(NC+3,1))**2+
+ & (P(NC+2,2)+P(NC+3,2))**2+(P(NC+2,3)+P(NC+3,3))**2)
+ X1=2D0*P(NC+1,4)/ECMR
+ X2=2D0*P(NC+4,4)/ECMR
+ ENDIF
+
+C...Differential cross-sections for three-jet (or reduced four-jet).
+ XQ=(1D0-X1)/(1D0-X2)
+ CT12=(X1*X2-2D0*X1-2D0*X2+2D0+QME)/SQRT((X1**2-QME)*(X2**2-QME))
+ ST12=SQRT(1D0-CT12**2)
+ IF(MSTJ(109).NE.1) THEN
+ SIGU=2D0*X1**2+X2**2*(1D0+CT12**2)-QME*(3D0+CT12**2-X1-X2)-
+ & QME*X1/XQ+0.5D0*QME*((X2**2-QME)*ST12**2-2D0*X2)*XQ
+ SIGL=(X2*ST12)**2-QME*(3D0-CT12**2-2.5D0*(X1+X2)+X1*X2+QME)+
+ & 0.5D0*QME*(X1**2-X1-QME)/XQ+0.5D0*QME*((X2**2-QME)*CT12**2-
+ & X2)*XQ
+ SIGT=0.5D0*(X2**2-QME-0.5D0*QME*(X2**2-QME)/XQ)*ST12**2
+ SIGI=((1D0-0.5D0*QME*XQ)*(X2**2-QME)*ST12*CT12+
+ & QME*(1D0-X1-X2+0.5D0*X1*X2+0.5D0*QME)*ST12/CT12)/SQ2
+ SIGA=X2**2*ST12/SQ2
+ SIGP=2D0*(X1**2-X2**2*CT12)
+
+C...Differential cross-sect for scalar gluons (no mass effects).
+ ELSE
+ X3=2D0-X1-X2
+ XT=X2*ST12
+ CT13=SQRT(MAX(0D0,1D0-(XT/X3)**2))
+ SIGU=(1D0-PARJ(171))*(X3**2-0.5D0*XT**2)+
+ & PARJ(171)*(X3**2-0.5D0*XT**2-4D0*(1D0-X1)*(1D0-X2)**2/X1)
+ SIGL=(1D0-PARJ(171))*0.5D0*XT**2+
+ & PARJ(171)*0.5D0*(1D0-X1)**2*XT**2
+ SIGT=(1D0-PARJ(171))*0.25D0*XT**2+
+ & PARJ(171)*0.25D0*XT**2*(1D0-2D0*X1)
+ SIGI=-(0.5D0/SQ2)*((1D0-PARJ(171))*XT*X3*CT13+
+ & PARJ(171)*XT*((1D0-2D0*X1)*X3*CT13-X1*(X1-X2)))
+ SIGA=(0.25D0/SQ2)*XT*(2D0*(1D0-X1)-X1*X3)
+ SIGP=X3**2-2D0*(1D0-X1)*(1D0-X2)/X1
+ ENDIF
+ ENDIF
+
+C...Upper bounds for differential cross-section.
+ HF1A=ABS(HF1)
+ HF2A=ABS(HF2)
+ HF3A=ABS(HF3)
+ HF4A=ABS(HF4)
+ SIGMAX=(2D0*HF1A+HF3A+HF4A)*ABS(SIGU)+2D0*(HF1A+HF3A+HF4A)*
+ &ABS(SIGL)+2D0*(HF1A+2D0*HF3A+2D0*HF4A)*ABS(SIGT)+2D0*SQ2*
+ &(HF1A+2D0*HF3A+2D0*HF4A)*ABS(SIGI)+4D0*SQ2*HF2A*ABS(SIGA)+
+ &2D0*HF2A*ABS(SIGP)
+
+C...Generate angular orientation according to differential cross-sect.
+ 100 CHI=PARU(2)*PYR(0)
+ CTHE=2D0*PYR(0)-1D0
+ PHI=PARU(2)*PYR(0)
+ CCHI=COS(CHI)
+ SCHI=SIN(CHI)
+ C2CHI=COS(2D0*CHI)
+ S2CHI=SIN(2D0*CHI)
+ THE=ACOS(CTHE)
+ STHE=SIN(THE)
+ C2PHI=COS(2D0*(PHI-PARJ(134)))
+ S2PHI=SIN(2D0*(PHI-PARJ(134)))
+ SIG=((1D0+CTHE**2)*HF1+STHE**2*(C2PHI*HF3-S2PHI*HF4))*SIGU+
+ &2D0*(STHE**2*HF1-STHE**2*(C2PHI*HF3-S2PHI*HF4))*SIGL+
+ &2D0*(STHE**2*C2CHI*HF1+((1D0+CTHE**2)*C2CHI*C2PHI-2D0*CTHE*S2CHI*
+ &S2PHI)*HF3-((1D0+CTHE**2)*C2CHI*S2PHI+2D0*CTHE*S2CHI*C2PHI)*HF4)*
+ &SIGT-2D0*SQ2*(2D0*STHE*CTHE*CCHI*HF1-2D0*STHE*(CTHE*CCHI*C2PHI-
+ &SCHI*S2PHI)*HF3+2D0*STHE*(CTHE*CCHI*S2PHI+SCHI*C2PHI)*HF4)*SIGI+
+ &4D0*SQ2*STHE*CCHI*HF2*SIGA+2D0*CTHE*HF2*SIGP
+ IF(SIG.LT.SIGMAX*PYR(0)) GOTO 100
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYONIA
+C...Generates Upsilon and toponium decays into three gluons
+C...or two gluons and a photon.
+
+ SUBROUTINE PYONIA(KFL,ECM)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
+ SAVE /PYJETS/,/PYDAT1/,/PYDAT2/
+
+C...Printout. Check input parameters.
+ IF(MSTU(12).NE.12345) CALL PYLIST(0)
+ IF(KFL.LT.0.OR.KFL.GT.8) THEN
+ CALL PYERRM(16,'(PYONIA:) called with unknown flavour code')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+ IF(ECM.LT.PARJ(127)+2.02D0*PARF(101)) THEN
+ CALL PYERRM(16,'(PYONIA:) called with too small CM energy')
+ IF(MSTU(21).GE.1) RETURN
+ ENDIF
+
+C...Initial e+e- and onium state (optional).
+ NC=0
+ IF(MSTJ(115).GE.2) THEN
+ NC=NC+2
+ CALL PY1ENT(NC-1,11,0.5D0*ECM,0D0,0D0)
+ K(NC-1,1)=21
+ CALL PY1ENT(NC,-11,0.5D0*ECM,PARU(1),0D0)
+ K(NC,1)=21
+ ENDIF
+ KFLC=IABS(KFL)
+ IF(MSTJ(115).GE.3.AND.KFLC.GE.5) THEN
+ NC=NC+1
+ KF=110*KFLC+3
+ MSTU10=MSTU(10)
+ MSTU(10)=1
+ P(NC,5)=ECM
+ CALL PY1ENT(NC,KF,ECM,0D0,0D0)
+ K(NC,1)=21
+ K(NC,3)=1
+ MSTU(10)=MSTU10
+ ENDIF
+
+C...Choose x1 and x2 according to matrix element.
+ NTRY=0
+ 100 X1=PYR(0)
+ X2=PYR(0)
+ X3=2D0-X1-X2
+ IF(X3.GE.1D0.OR.((1D0-X1)/(X2*X3))**2+((1D0-X2)/(X1*X3))**2+
+ &((1D0-X3)/(X1*X2))**2.LE.2D0*PYR(0)) GOTO 100
+ NTRY=NTRY+1
+ NJET=3
+ IF(MSTJ(101).LE.4) CALL PY3ENT(NC+1,21,21,21,ECM,X1,X3)
+ IF(MSTJ(101).GE.5) CALL PY3ENT(-(NC+1),21,21,21,ECM,X1,X3)
+
+C...Photon-gluon-gluon events. Small system modifications. Jet origin.
+ MSTU(111)=MSTJ(108)
+ IF(MSTJ(108).EQ.2.AND.(MSTJ(101).EQ.0.OR.MSTJ(101).EQ.1))
+ &MSTU(111)=1
+ PARU(112)=PARJ(121)
+ IF(MSTU(111).EQ.2) PARU(112)=PARJ(122)
+ QF=0D0
+ IF(KFLC.NE.0) QF=KCHG(KFLC,1)/3D0
+ RGAM=7.2D0*QF**2*PARU(101)/PYALPS(ECM**2)
+ MK=0
+ ECMC=ECM
+ IF(PYR(0).GT.RGAM/(1D0+RGAM)) THEN
+ IF(1D0-MAX(X1,X2,X3).LE.MAX((PARJ(126)/ECM)**2,PARJ(125)))
+ & NJET=2
+ IF(NJET.EQ.2.AND.MSTJ(101).LE.4) CALL PY2ENT(NC+1,21,21,ECM)
+ IF(NJET.EQ.2.AND.MSTJ(101).GE.5) CALL PY2ENT(-(NC+1),21,21,ECM)
+ ELSE
+ MK=1
+ ECMC=SQRT(1D0-X1)*ECM
+ IF(ECMC.LT.2D0*PARJ(127)) GOTO 100
+ K(NC+1,1)=1
+ K(NC+1,2)=22
+ K(NC+1,4)=0
+ K(NC+1,5)=0
+ IF(MSTJ(101).GE.5) K(NC+2,4)=MSTU(5)*(NC+3)
+ IF(MSTJ(101).GE.5) K(NC+2,5)=MSTU(5)*(NC+3)
+ IF(MSTJ(101).GE.5) K(NC+3,4)=MSTU(5)*(NC+2)
+ IF(MSTJ(101).GE.5) K(NC+3,5)=MSTU(5)*(NC+2)
+ NJET=2
+ IF(ECMC.LT.4D0*PARJ(127)) THEN
+ MSTU10=MSTU(10)
+ MSTU(10)=1
+ P(NC+2,5)=ECMC
+ CALL PY1ENT(NC+2,83,0.5D0*(X2+X3)*ECM,PARU(1),0D0)
+ MSTU(10)=MSTU10
+ NJET=0
+ ENDIF
+ ENDIF
+ DO 110 IP=NC+1,N
+ K(IP,3)=K(IP,3)+(MSTJ(115)/2)+(KFLC/5)*(MSTJ(115)/3)*(NC-1)
+ 110 CONTINUE
+
+C...Differential cross-sections. Upper limit for cross-section.
+ IF(MSTJ(106).EQ.1) THEN
+ SQ2=SQRT(2D0)
+ HF1=1D0-PARJ(131)*PARJ(132)
+ HF3=PARJ(133)**2
+ CT13=(X1*X3-2D0*X1-2D0*X3+2D0)/(X1*X3)
+ ST13=SQRT(1D0-CT13**2)
+ SIGL=0.5D0*X3**2*((1D0-X2)**2+(1D0-X3)**2)*ST13**2
+ SIGU=(X1*(1D0-X1))**2+(X2*(1D0-X2))**2+(X3*(1D0-X3))**2-SIGL
+ SIGT=0.5D0*SIGL
+ SIGI=(SIGL*CT13/ST13+0.5D0*X1*X3*(1D0-X2)**2*ST13)/SQ2
+ SIGMAX=(2D0*HF1+HF3)*ABS(SIGU)+2D0*(HF1+HF3)*ABS(SIGL)+2D0*(HF1+
+ & 2D0*HF3)*ABS(SIGT)+2D0*SQ2*(HF1+2D0*HF3)*ABS(SIGI)
+
+C...Angular orientation of event.
+ 120 CHI=PARU(2)*PYR(0)
+ CTHE=2D0*PYR(0)-1D0
+ PHI=PARU(2)*PYR(0)
+ CCHI=COS(CHI)
+ SCHI=SIN(CHI)
+ C2CHI=COS(2D0*CHI)
+ S2CHI=SIN(2D0*CHI)
+ THE=ACOS(CTHE)
+ STHE=SIN(THE)
+ C2PHI=COS(2D0*(PHI-PARJ(134)))
+ S2PHI=SIN(2D0*(PHI-PARJ(134)))
+ SIG=((1D0+CTHE**2)*HF1+STHE**2*C2PHI*HF3)*SIGU+2D0*(STHE**2*HF1-
+ & STHE**2*C2PHI*HF3)*SIGL+2D0*(STHE**2*C2CHI*HF1+((1D0+CTHE**2)*
+ & C2CHI*C2PHI-2D0*CTHE*S2CHI*S2PHI)*HF3)*SIGT-
+ & 2D0*SQ2*(2D0*STHE*CTHE*CCHI*HF1-2D0*STHE*
+ & (CTHE*CCHI*C2PHI-SCHI*S2PHI)*HF3)*SIGI
+ IF(SIG.LT.SIGMAX*PYR(0)) GOTO 120
+ CALL PYROBO(NC+1,N,0D0,CHI,0D0,0D0,0D0)
+ CALL PYROBO(NC+1,N,THE,PHI,0D0,0D0,0D0)
+ ENDIF
+
+C...Generate parton shower. Rearrange along strings and check.
+ IF(MSTJ(101).GE.5.AND.NJET.GE.2) THEN
+ if(parj(200).ne.1.) CALL PYSHOW(NC+MK+1,-NJET,ECMC)
+ if(parj(200).eq.1.) CALL PYSHOWQ(NC+MK+1,-NJET,ECMC)
+ MSTJ14=MSTJ(14)
+ IF(MSTJ(105).EQ.-1) MSTJ(14)=-1
+ IF(MSTJ(105).GE.0) MSTU(28)=0
+ CALL PYPREP(0)
+ MSTJ(14)=MSTJ14
+ IF(MSTJ(105).GE.0.AND.MSTU(28).NE.0) GOTO 100
+ ENDIF
+
+C...Generate fragmentation. Information for PYTABU:
+ IF(MSTJ(105).EQ.1) CALL PYEXEC
+ MSTU(161)=110*KFLC+3
+ MSTU(162)=0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYBOOK
+C...Books a histogram.
+
+ SUBROUTINE PYBOOK(ID,TITLE,NX,XL,XU)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblock.
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYBINS/
+C...Local character variables.
+ CHARACTER TITLE*(*), TITFX*60
+
+C...Check that input is sensible. Find initial address in memory.
+ IF(ID.LE.0.OR.ID.GT.IHIST(1)) CALL PYERRM(28,
+ &'(PYBOOK:) not allowed histogram number')
+ IF(NX.LE.0.OR.NX.GT.100) CALL PYERRM(28,
+ &'(PYBOOK:) not allowed number of bins')
+ IF(XL.GE.XU) CALL PYERRM(28,
+ &'(PYBOOK:) x limits in wrong order')
+ INDX(ID)=IHIST(4)
+ IHIST(4)=IHIST(4)+28+NX
+ IF(IHIST(4).GT.IHIST(2)) CALL PYERRM(28,
+ &'(PYBOOK:) out of histogram space')
+ IS=INDX(ID)
+
+C...Store histogram size and reset contents.
+ BIN(IS+1)=NX
+ BIN(IS+2)=XL
+ BIN(IS+3)=XU
+ BIN(IS+4)=(XU-XL)/NX
+ CALL PYNULL(ID)
+
+C...Store title by conversion to integer to double precision.
+ TITFX=TITLE//' '
+ DO 100 IT=1,20
+ BIN(IS+8+NX+IT)=256**2*ICHAR(TITFX(3*IT-2:3*IT-2))+
+ & 256*ICHAR(TITFX(3*IT-1:3*IT-1))+ICHAR(TITFX(3*IT:3*IT))
+ 100 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYFILL
+C...Fills entry in histogram.
+
+ SUBROUTINE PYFILL(ID,X,W)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblock.
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYBINS/
+
+C...Find initial address in memory. Increase number of entries.
+ IF(ID.LE.0.OR.ID.GT.IHIST(1)) CALL PYERRM(28,
+ &'(PYFILL:) not allowed histogram number')
+ IS=INDX(ID)
+ IF(IS.EQ.0) CALL PYERRM(28,
+ &'(PYFILL:) filling unbooked histogram')
+ BIN(IS+5)=BIN(IS+5)+1D0
+
+C...Find bin in x, including under/overflow, and fill.
+ IF(X.LT.BIN(IS+2)) THEN
+ BIN(IS+6)=BIN(IS+6)+W
+ ELSEIF(X.GE.BIN(IS+3)) THEN
+ BIN(IS+8)=BIN(IS+8)+W
+ ELSE
+ BIN(IS+7)=BIN(IS+7)+W
+ IX=(X-BIN(IS+2))/BIN(IS+4)
+ IX=MAX(0,MIN(NINT(BIN(IS+1))-1,IX))
+ BIN(IS+9+IX)=BIN(IS+9+IX)+W
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYFACT
+C...Multiplies histogram contents by factor.
+
+ SUBROUTINE PYFACT(ID,F)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblock.
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYBINS/
+
+C...Find initial address in memory. Multiply all contents bins.
+ IF(ID.LE.0.OR.ID.GT.IHIST(1)) CALL PYERRM(28,
+ &'(PYFACT:) not allowed histogram number')
+ IS=INDX(ID)
+ IF(IS.EQ.0) CALL PYERRM(28,
+ &'(PYFACT:) scaling unbooked histogram')
+ DO 100 IX=IS+6,IS+8+NINT(BIN(IS+1))
+ BIN(IX)=F*BIN(IX)
+ 100 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYOPER
+C...Performs operations between histograms.
+
+ SUBROUTINE PYOPER(ID1,OPER,ID2,ID3,F1,F2)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblock.
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYBINS/
+C...Character variable.
+ CHARACTER OPER*(*)
+
+C...Find initial addresses in memory, and histogram size.
+ IF(ID1.LE.0.OR.ID1.GT.IHIST(1)) CALL PYERRM(28,
+ &'(PYFACT:) not allowed histogram number')
+ IS1=INDX(ID1)
+ IS2=INDX(MIN(IHIST(1),MAX(1,ID2)))
+ IS3=INDX(MIN(IHIST(1),MAX(1,ID3)))
+ NX=NINT(BIN(IS3+1))
+ IF(OPER.EQ.'M'.AND.ID3.EQ.0) NX=NINT(BIN(IS2+1))
+
+C...Update info on number of histogram entries.
+ IF(OPER.EQ.'+'.OR.OPER.EQ.'-'.OR.OPER.EQ.'*'.OR.OPER.EQ.'/') THEN
+ BIN(IS3+5)=BIN(IS1+5)+BIN(IS2+5)
+ ELSEIF(OPER.EQ.'A'.OR.OPER.EQ.'S'.OR.OPER.EQ.'L') THEN
+ BIN(IS3+5)=BIN(IS1+5)
+ ENDIF
+
+C...Operations on pair of histograms: addition, subtraction,
+C...multiplication, division.
+ IF(OPER.EQ.'+') THEN
+ DO 100 IX=6,8+NX
+ BIN(IS3+IX)=F1*BIN(IS1+IX)+F2*BIN(IS2+IX)
+ 100 CONTINUE
+ ELSEIF(OPER.EQ.'-') THEN
+ DO 110 IX=6,8+NX
+ BIN(IS3+IX)=F1*BIN(IS1+IX)-F2*BIN(IS2+IX)
+ 110 CONTINUE
+ ELSEIF(OPER.EQ.'*') THEN
+ DO 120 IX=6,8+NX
+ BIN(IS3+IX)=F1*BIN(IS1+IX)*F2*BIN(IS2+IX)
+ 120 CONTINUE
+ ELSEIF(OPER.EQ.'/') THEN
+ DO 130 IX=6,8+NX
+ FA2=F2*BIN(IS2+IX)
+ IF(ABS(FA2).LE.1D-20) THEN
+ BIN(IS3+IX)=0D0
+ ELSE
+ BIN(IS3+IX)=F1*BIN(IS1+IX)/FA2
+ ENDIF
+ 130 CONTINUE
+
+C...Operations on single histogram: multiplication+addition,
+C...square root+addition, logarithm+addition.
+ ELSEIF(OPER.EQ.'A') THEN
+ DO 140 IX=6,8+NX
+ BIN(IS3+IX)=F1*BIN(IS1+IX)+F2
+ 140 CONTINUE
+ ELSEIF(OPER.EQ.'S') THEN
+ DO 150 IX=6,8+NX
+ BIN(IS3+IX)=F1*SQRT(MAX(0D0,BIN(IS1+IX)))+F2
+ 150 CONTINUE
+ ELSEIF(OPER.EQ.'L') THEN
+ ZMIN=1D20
+ DO 160 IX=9,8+NX
+ IF(BIN(IS1+IX).LT.ZMIN.AND.BIN(IS1+IX).GT.1D-20)
+ & ZMIN=0.8D0*BIN(IS1+IX)
+ 160 CONTINUE
+ DO 170 IX=6,8+NX
+ BIN(IS3+IX)=F1*LOG10(MAX(ZMIN,BIN(IS1+IX)))+F2
+ 170 CONTINUE
+
+C...Operation on two or three histograms: average and
+C...standard deviation.
+ ELSEIF(OPER.EQ.'M') THEN
+ DO 180 IX=6,8+NX
+ IF(ABS(BIN(IS1+IX)).LE.1D-20) THEN
+ BIN(IS2+IX)=0D0
+ ELSE
+ BIN(IS2+IX)=BIN(IS2+IX)/BIN(IS1+IX)
+ ENDIF
+ IF(ID3.NE.0) THEN
+ IF(ABS(BIN(IS1+IX)).LE.1D-20) THEN
+ BIN(IS3+IX)=0D0
+ ELSE
+ BIN(IS3+IX)=SQRT(MAX(0D0,BIN(IS3+IX)/BIN(IS1+IX)-
+ & BIN(IS2+IX)**2))
+ ENDIF
+ ENDIF
+ BIN(IS1+IX)=F1*BIN(IS1+IX)
+ 180 CONTINUE
+ ENDIF
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYHIST
+C...Prints and resets all histograms.
+
+ SUBROUTINE PYHIST
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblock.
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYBINS/
+
+C...Loop over histograms, print and reset used ones.
+ DO 100 ID=1,IHIST(1)
+ IS=INDX(ID)
+ IF(IS.NE.0.AND.NINT(BIN(IS+5)).GT.0) THEN
+ CALL PYPLOT(ID)
+ CALL PYNULL(ID)
+ ENDIF
+ 100 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYPLOT
+C...Prints a histogram (but does not reset it).
+
+ SUBROUTINE PYPLOT(ID)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYDAT1/,/PYBINS/
+C...Local arrays and character variables.
+ DIMENSION IDATI(6), IROW(100), IFRA(100), DYAC(10)
+ CHARACTER TITLE*60, OUT*100, CHA(0:11)*1
+
+C...Steps in histogram scale. Character sequence.
+ DATA DYAC/.04,.05,.06,.08,.10,.12,.15,.20,.25,.30/
+ DATA CHA/'0','1','2','3','4','5','6','7','8','9','X','-'/
+
+C...Find initial address in memory; skip if empty histogram.
+ IF(ID.LE.0.OR.ID.GT.IHIST(1)) RETURN
+ IS=INDX(ID)
+ IF(IS.EQ.0) RETURN
+ IF(NINT(BIN(IS+5)).LE.0) THEN
+ WRITE(MSTU(11),5000) ID
+ RETURN
+ ENDIF
+
+C...Number of histogram lines and x bins.
+ LIN=IHIST(3)-18
+ NX=NINT(BIN(IS+1))
+
+C...Extract title by conversion from double precision via integer.
+ DO 100 IT=1,20
+ IEQ=NINT(BIN(IS+8+NX+IT))
+ TITLE(3*IT-2:3*IT)=CHAR(IEQ/256**2)//CHAR(MOD(IEQ,256**2)/256)
+ & //CHAR(MOD(IEQ,256))
+ 100 CONTINUE
+
+C...Find time; print title.
+ CALL PYTIME(IDATI)
+ IF(IDATI(1).GT.0) THEN
+ WRITE(MSTU(11),5100) ID, TITLE, (IDATI(J),J=1,5)
+ ELSE
+ WRITE(MSTU(11),5200) ID, TITLE
+ ENDIF
+
+C...Find minimum and maximum bin content.
+ YMIN=BIN(IS+9)
+ YMAX=BIN(IS+9)
+ DO 110 IX=IS+10,IS+8+NX
+ IF(BIN(IX).LT.YMIN) YMIN=BIN(IX)
+ IF(BIN(IX).GT.YMAX) YMAX=BIN(IX)
+ 110 CONTINUE
+
+C...Determine scale and step size for y axis.
+ IF(YMAX-YMIN.GT.LIN*DYAC(1)*1D-9) THEN
+ IF(YMIN.GT.0D0.AND.YMIN.LT.0.1D0*YMAX) YMIN=0D0
+ IF(YMAX.LT.0D0.AND.YMAX.GT.0.1D0*YMIN) YMAX=0D0
+ IPOT=INT(LOG10(YMAX-YMIN)+10D0)-10
+ IF(YMAX-YMIN.LT.LIN*DYAC(1)*10D0**IPOT) IPOT=IPOT-1
+ IF(YMAX-YMIN.GT.LIN*DYAC(10)*10D0**IPOT) IPOT=IPOT+1
+ DELY=DYAC(1)
+ DO 120 IDEL=1,9
+ IF(YMAX-YMIN.GE.LIN*DYAC(IDEL)*10D0**IPOT) DELY=DYAC(IDEL+1)
+ 120 CONTINUE
+ DY=DELY*10D0**IPOT
+
+C...Convert bin contents to integer form; fractional fill in top row.
+ DO 130 IX=1,NX
+ CTA=ABS(BIN(IS+8+IX))/DY
+ IROW(IX)=SIGN(CTA+0.95D0,BIN(IS+8+IX))
+ IFRA(IX)=10D0*(CTA+1.05D0-DBLE(INT(CTA+0.95D0)))
+ 130 CONTINUE
+ IRMI=SIGN(ABS(YMIN)/DY+0.95D0,YMIN)
+ IRMA=SIGN(ABS(YMAX)/DY+0.95D0,YMAX)
+
+C...Print histogram row by row.
+ DO 150 IR=IRMA,IRMI,-1
+ IF(IR.EQ.0) GOTO 150
+ OUT=' '
+ DO 140 IX=1,NX
+ IF(IR.EQ.IROW(IX)) OUT(IX:IX)=CHA(IFRA(IX))
+ IF(IR*(IROW(IX)-IR).GT.0) OUT(IX:IX)=CHA(10)
+ 140 CONTINUE
+ WRITE(MSTU(11),5300) IR*DELY, IPOT, OUT
+ 150 CONTINUE
+
+C...Print sign and value of bin contents.
+ IPOT=INT(LOG10(MAX(YMAX,-YMIN))+10.0001D0)-10
+ OUT=' '
+ DO 160 IX=1,NX
+ IF(BIN(IS+8+IX).LT.-10D0**(IPOT-4)) OUT(IX:IX)=CHA(11)
+ IROW(IX)=NINT(10D0**(3-IPOT)*ABS(BIN(IS+8+IX)))
+ 160 CONTINUE
+ WRITE(MSTU(11),5400) OUT
+ DO 180 IR=4,1,-1
+ DO 170 IX=1,NX
+ OUT(IX:IX)=CHA(MOD(IROW(IX),10**IR)/10**(IR-1))
+ 170 CONTINUE
+ WRITE(MSTU(11),5500) IPOT+IR-4, OUT
+ 180 CONTINUE
+
+C...Print sign and value of lower bin edge.
+ IPOT=INT(LOG10(MAX(-BIN(IS+2),BIN(IS+3)-BIN(IS+4)))+
+ & 10.0001D0)-10
+ OUT=' '
+ DO 190 IX=1,NX
+ IF(BIN(IS+2)+(IX-1)*BIN(IS+4).LT.-10D0**(IPOT-3))
+ & OUT(IX:IX)=CHA(11)
+ IROW(IX)=NINT(10D0**(2-IPOT)*ABS(BIN(IS+2)+(IX-1)*BIN(IS+4)))
+ 190 CONTINUE
+ WRITE(MSTU(11),5600) OUT
+ DO 210 IR=3,1,-1
+ DO 200 IX=1,NX
+ OUT(IX:IX)=CHA(MOD(IROW(IX),10**IR)/10**(IR-1))
+ 200 CONTINUE
+ WRITE(MSTU(11),5500) IPOT+IR-3, OUT
+ 210 CONTINUE
+ ENDIF
+
+C...Calculate and print statistics.
+ CSUM=0D0
+ CXSUM=0D0
+ CXXSUM=0D0
+ DO 220 IX=1,NX
+ CTA=ABS(BIN(IS+8+IX))
+ X=BIN(IS+2)+(IX-0.5D0)*BIN(IS+4)
+ CSUM=CSUM+CTA
+ CXSUM=CXSUM+CTA*X
+ CXXSUM=CXXSUM+CTA*X**2
+ 220 CONTINUE
+ XMEAN=CXSUM/MAX(CSUM,1D-20)
+ XRMS=SQRT(MAX(0D0,CXXSUM/MAX(CSUM,1D-20)-XMEAN**2))
+ WRITE(MSTU(11),5700) NINT(BIN(IS+5)),XMEAN,BIN(IS+6),
+ &BIN(IS+2),BIN(IS+7),XRMS,BIN(IS+8),BIN(IS+3)
+
+C...Formats for output.
+ 5000 FORMAT(/5X,'Histogram no',I5,' : no entries')
+ 5100 FORMAT('1'/5X,'Histogram no',I5,6X,A60,5X,I4,'-',I2,'-',I2,1X,
+ &I2,':',I2/)
+ 5200 FORMAT('1'/5X,'Histogram no',I5,6X,A60/)
+ 5300 FORMAT(2X,F7.2,'*10**',I2,3X,A100)
+ 5400 FORMAT(/8X,'Contents',3X,A100)
+ 5500 FORMAT(9X,'*10**',I2,3X,A100)
+ 5600 FORMAT(/8X,'Low edge',3X,A100)
+ 5700 FORMAT(/5X,'Entries =',I12,1P,6X,'Mean =',D12.4,6X,'Underflow ='
+ &,D12.4,6X,'Low edge =',D12.4/5X,'All chan =',D12.4,6X,
+ &'Rms =',D12.4,6X,'Overflow =',D12.4,6X,'High edge =',D12.4)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYNULL
+C...Resets bin contents of a histogram.
+
+ SUBROUTINE PYNULL(ID)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblock.
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYBINS/
+
+ IF(ID.LE.0.OR.ID.GT.IHIST(1)) RETURN
+ IS=INDX(ID)
+ IF(IS.EQ.0) RETURN
+ DO 100 IX=IS+5,IS+8+NINT(BIN(IS+1))
+ BIN(IX)=0D0
+ 100 CONTINUE
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYDUMP
+C...Dumps histogram contents on file for reading by other program.
+C...Can also read back own dump.
+
+ SUBROUTINE PYDUMP(MDUMP,LFN,NHI,IHI)
+
+C...Double precision declaration.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+C...Commonblock.
+ COMMON/PYBINS/IHIST(4),INDX(1000),BIN(20000)
+ SAVE /PYBINS/
+C...Local arrays and character variables.
+ DIMENSION IHI(*),ISS(100),VAL(5)
+ CHARACTER TITLE*60,FORMAT*13
+
+C...Dump all histograms that have been booked,
+C...including titles and ranges, one after the other.
+ IF(MDUMP.EQ.1) THEN
+
+C...Loop over histograms and find which are wanted and booked.
+ IF(NHI.LE.0) THEN
+ NW=IHIST(1)
+ ELSE
+ NW=NHI
+ ENDIF
+ DO 130 IW=1,NW
+ IF(NHI.EQ.0) THEN
+ ID=IW
+ ELSE
+ ID=IHI(IW)
+ ENDIF
+ IS=INDX(ID)
+ IF(IS.NE.0) THEN
+
+C...Write title, histogram size, filling statistics.
+ NX=NINT(BIN(IS+1))
+ DO 100 IT=1,20
+ IEQ=NINT(BIN(IS+8+NX+IT))
+ TITLE(3*IT-2:3*IT)=CHAR(IEQ/256**2)//
+ & CHAR(MOD(IEQ,256**2)/256)//CHAR(MOD(IEQ,256))
+ 100 CONTINUE
+ WRITE(LFN,5100) ID,TITLE
+ WRITE(LFN,5200) NX,BIN(IS+2),BIN(IS+3)
+ WRITE(LFN,5300) NINT(BIN(IS+5)),BIN(IS+6),BIN(IS+7),
+ & BIN(IS+8)
+
+
+C...Write histogram contents, in groups of five.
+ DO 120 IXG=1,(NX+4)/5
+ DO 110 IXV=1,5
+ IX=5*IXG+IXV-5
+ IF(IX.LE.NX) THEN
+ VAL(IXV)=BIN(IS+8+IX)
+ ELSE
+ VAL(IXV)=0D0
+ ENDIF
+ 110 CONTINUE
+ WRITE(LFN,5400) (VAL(IXV),IXV=1,5)
+ 120 CONTINUE
+
+C...Go to next histogram; finish.
+ ELSEIF(NHI.GT.0) THEN
+ CALL PYERRM(8,'(PYDUMP:) unknown histogram number')
+ ENDIF
+ 130 CONTINUE
+
+C...Read back in histograms dumped MDUMP=1.
+ ELSEIF(MDUMP.EQ.2) THEN
+
+C...Read histogram number, title and range, and book.
+ 140 READ(LFN,5100,END=170) ID,TITLE
+ READ(LFN,5200) NX,XL,XU
+ CALL PYBOOK(ID,TITLE,NX,XL,XU)
+ IS=INDX(ID)
+
+C...Read filling statistics.
+ READ(LFN,5300) NENTRY,BIN(IS+6),BIN(IS+7),BIN(IS+8)
+ BIN(IS+5)=DBLE(NENTRY)
+
+C...Read histogram contents, in groups of five.
+ DO 160 IXG=1,(NX+4)/5
+ READ(LFN,5400) (VAL(IXV),IXV=1,5)
+ DO 150 IXV=1,5
+ IX=5*IXG+IXV-5
+ IF(IX.LE.NX) BIN(IS+8+IX)=VAL(IXV)
+ 150 CONTINUE
+ 160 CONTINUE
+
+C...Go to next histogram; finish.
+ GOTO 140
+ 170 CONTINUE
+
+C...Write histogram contents in column format,
+C...convenient e.g. for GNUPLOT input.
+ ELSEIF(MDUMP.EQ.3) THEN
+
+C...Find addresses to wanted histograms.
+ NSS=0
+ IF(NHI.LE.0) THEN
+ NW=IHIST(1)
+ ELSE
+ NW=NHI
+ ENDIF
+ DO 180 IW=1,NW
+ IF(NHI.EQ.0) THEN
+ ID=IW
+ ELSE
+ ID=IHI(IW)
+ ENDIF
+ IS=INDX(ID)
+ IF(IS.NE.0.AND.NSS.LT.100) THEN
+ NSS=NSS+1
+ ISS(NSS)=IS
+ ELSEIF(NSS.GE.100) THEN
+ CALL PYERRM(8,'(PYDUMP:) too many histograms requested')
+ ELSEIF(NHI.GT.0) THEN
+ CALL PYERRM(8,'(PYDUMP:) unknown histogram number')
+ ENDIF
+ 180 CONTINUE
+
+C...Check that they have common number of x bins. Fix format.
+ NX=NINT(BIN(ISS(1)+1))
+ DO 190 IW=2,NSS
+ IF(NINT(BIN(ISS(IW)+1)).NE.NX) THEN
+ CALL PYERRM(8,'(PYDUMP:) different number of bins')
+ RETURN
+ ENDIF
+ 190 CONTINUE
+ FORMAT='(1P,000E12.4)'
+ WRITE(FORMAT(5:7),'(I3)') NSS+1
+
+C...Write histogram contents; first column x values.
+ DO 200 IX=1,NX
+ X=BIN(ISS(1)+2)+(IX-0.5D0)*BIN(ISS(1)+4)
+ WRITE(LFN,FORMAT) X, (BIN(ISS(IW)+8+IX),IW=1,NSS)
+ 200 CONTINUE
+
+ ENDIF
+
+C...Formats for output.
+ 5100 FORMAT(I5,5X,A60)
+ 5200 FORMAT(I5,1P,2D12.4)
+ 5300 FORMAT(I12,1P,3D12.4)
+ 5400 FORMAT(1P,5D12.4)
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYSTOP
+C...Allows users to handle STOP statemens
+
+ SUBROUTINE PYSTOP(MCOD)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+
+C...Write message, then stop
+ WRITE(MSTU(11),5000) MCOD
+ STOP
+
+
+C...Formats for output.
+ 5000 FORMAT(/5X,'PYSTOP called with code: ',I4)
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYKCUT
+C...Dummy routine, which the user can replace in order to make cuts on
+C...the kinematics on the parton level before the matrix elements are
+C...evaluated and the event is generated. The cross-section estimates
+C...will automatically take these cuts into account, so the given
+C...values are for the allowed phase space region only. MCUT=0 means
+C...that the event has passed the cuts, MCUT=1 that it has failed.
+
+ SUBROUTINE PYKCUT(MCUT)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ SAVE /PYDAT1/,/PYINT1/,/PYINT2/
+
+C...Set default value (accepting event) for MCUT.
+ MCUT=0
+
+C...Read out subprocess number.
+ ISUB=MINT(1)
+ ISTSB=ISET(ISUB)
+
+C...Read out tau, y*, cos(theta), tau' (where defined, else =0).
+ TAU=VINT(21)
+ YST=VINT(22)
+ CTH=0D0
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) CTH=VINT(23)
+ TAUP=0D0
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUP=VINT(26)
+
+C...Calculate x_1, x_2, x_F.
+ IF(ISTSB.LE.2.OR.ISTSB.GE.5) THEN
+ X1=SQRT(TAU)*EXP(YST)
+ X2=SQRT(TAU)*EXP(-YST)
+ ELSE
+ X1=SQRT(TAUP)*EXP(YST)
+ X2=SQRT(TAUP)*EXP(-YST)
+ ENDIF
+ XF=X1-X2
+
+C...Calculate shat, that, uhat, p_T^2.
+ SHAT=TAU*VINT(2)
+ SQM3=VINT(63)
+ SQM4=VINT(64)
+ RM3=SQM3/SHAT
+ RM4=SQM4/SHAT
+ BE34=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4))
+ RPTS=4D0*VINT(71)**2/SHAT
+ BE34L=SQRT(MAX(0D0,(1D0-RM3-RM4)**2-4D0*RM3*RM4-RPTS))
+ RM34=2D0*RM3*RM4
+ RSQM=1D0+RM34
+ RTHM=(4D0*RM3*RM4+RPTS)/(1D0-RM3-RM4+BE34L)
+ THAT=-0.5D0*SHAT*MAX(RTHM,1D0-RM3-RM4-BE34*CTH)
+ UHAT=-0.5D0*SHAT*MAX(RTHM,1D0-RM3-RM4+BE34*CTH)
+ PT2=MAX(VINT(71)**2,0.25D0*SHAT*BE34**2*(1D0-CTH**2))
+
+C...Decisions by user to be put here.
+
+C...Stop program if this routine is ever called.
+C...You should not copy these lines to your own routine.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(6)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link your PYKCUT routine ',
+ &'correctly.'/1X,'Dummy routine in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYEVWT
+C...Dummy routine, which the user can replace in order to multiply the
+C...standard PYTHIA differential cross-section by a process- and
+C...kinematics-dependent factor WTXS. For MSTP(142)=1 this corresponds
+C...to generation of weighted events, with weight 1/WTXS, while for
+C...MSTP(142)=2 it corresponds to a modification of the underlying
+C...physics.
+
+ SUBROUTINE PYEVWT(WTXS)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ COMMON/PYINT1/MINT(400),VINT(400)
+ COMMON/PYINT2/ISET(500),KFPR(500,2),COEF(500,20),ICOL(40,4,2)
+ SAVE /PYDAT1/,/PYINT1/,/PYINT2/
+
+C...Set default weight for WTXS.
+ WTXS=1D0
+
+C...Read out subprocess number.
+ ISUB=MINT(1)
+ ISTSB=ISET(ISUB)
+
+C...Read out tau, y*, cos(theta), tau' (where defined, else =0).
+ TAU=VINT(21)
+ YST=VINT(22)
+ CTH=0D0
+ IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) CTH=VINT(23)
+ TAUP=0D0
+ IF(ISTSB.GE.3.AND.ISTSB.LE.5) TAUP=VINT(26)
+
+C...Read out x_1, x_2, x_F, shat, that, uhat, p_T^2.
+ X1=VINT(41)
+ X2=VINT(42)
+ XF=X1-X2
+ SHAT=VINT(44)
+ THAT=VINT(45)
+ UHAT=VINT(46)
+ PT2=VINT(48)
+
+C...Modifications by user to be put here.
+
+C...Stop program if this routine is ever called.
+C...You should not copy these lines to your own routine.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(4)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link your PYEVWT routine ',
+ &'correctly.'/1X,'Dummy routine in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...UPINIT
+C...Dummy routine, to be replaced by a user implementing external
+C...processes. Is supposed to fill the HEPRUP commonblock with info
+C...on incoming beams and allowed processes.
+
+C...New example: handles a standard Les Houches Events File.
+
+ SUBROUTINE UPINIT
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...PYTHIA commonblock: only used to provide read unit MSTP(161).
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ SAVE /PYPARS/
+
+C...User process initialization commonblock.
+ INTEGER MAXPUP
+ PARAMETER (MAXPUP=100)
+ INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+ DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+ COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+ &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+ &LPRUP(MAXPUP)
+ SAVE /HEPRUP/
+
+C...Lines to read in assumed never longer than 200 characters.
+ PARAMETER (MAXLEN=200)
+ CHARACTER*(MAXLEN) STRING
+
+C...Format for reading lines.
+ CHARACTER*6 STRFMT
+ STRFMT='(A000)'
+ WRITE(STRFMT(3:5),'(I3)') MAXLEN
+
+C...Loop until finds line beginning with "<init>" or "<init ".
+ 100 READ(MSTP(161),STRFMT,END=130,ERR=130) STRING
+ IBEG=0
+ 110 IBEG=IBEG+1
+C...Allow indentation.
+ IF(STRING(IBEG:IBEG).EQ.' '.AND.IBEG.LT.MAXLEN-5) GOTO 110
+ IF(STRING(IBEG:IBEG+5).NE.'<init>'.AND.
+ &STRING(IBEG:IBEG+5).NE.'<init ') GOTO 100
+
+C...Read first line of initialization info.
+ READ(MSTP(161),*,END=130,ERR=130) IDBMUP(1),IDBMUP(2),EBMUP(1),
+ &EBMUP(2),PDFGUP(1),PDFGUP(2),PDFSUP(1),PDFSUP(2),IDWTUP,NPRUP
+
+C...Read NPRUP subsequent lines with information on each process.
+ DO 120 IPR=1,NPRUP
+ READ(MSTP(161),*,END=130,ERR=130) XSECUP(IPR),XERRUP(IPR),
+ & XMAXUP(IPR),LPRUP(IPR)
+ 120 CONTINUE
+ RETURN
+
+C...Error exit: give up if initalization does not work.
+ 130 WRITE(*,*) ' Failed to read LHEF initialization information.'
+ WRITE(*,*) ' Event generation will be stopped.'
+ CALL PYSTOP(12)
+
+ RETURN
+ END
+
+C...Old example: handles a simple Pythia 6.4 initialization file.
+
+c SUBROUTINE UPINIT
+
+C...Double precision and integer declarations.
+c IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+c IMPLICIT INTEGER(I-N)
+
+C...Commonblocks.
+c COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+c COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+c SAVE /PYDAT1/,/PYPARS/
+
+C...User process initialization commonblock.
+c INTEGER MAXPUP
+c PARAMETER (MAXPUP=100)
+c INTEGER IDBMUP,PDFGUP,PDFSUP,IDWTUP,NPRUP,LPRUP
+c DOUBLE PRECISION EBMUP,XSECUP,XERRUP,XMAXUP
+c COMMON/HEPRUP/IDBMUP(2),EBMUP(2),PDFGUP(2),PDFSUP(2),
+c &IDWTUP,NPRUP,XSECUP(MAXPUP),XERRUP(MAXPUP),XMAXUP(MAXPUP),
+c &LPRUP(MAXPUP)
+c SAVE /HEPRUP/
+
+C...Read info from file.
+c IF(MSTP(161).GT.0) THEN
+c READ(MSTP(161),*,END=110,ERR=110) IDBMUP(1),IDBMUP(2),EBMUP(1),
+c & EBMUP(2),PDFGUP(1),PDFGUP(2),PDFSUP(1),PDFSUP(2),IDWTUP,NPRUP
+c DO 100 IPR=1,NPRUP
+c READ(MSTP(161),*,END=110,ERR=110) XSECUP(IPR),XERRUP(IPR),
+c & XMAXUP(IPR),LPRUP(IPR)
+c 100 CONTINUE
+c RETURN
+C...Error or prematurely reached end of file.
+c 110 WRITE(MSTU(11),5000)
+c STOP
+
+C...Else not implemented.
+c ELSE
+c WRITE(MSTU(11),5100)
+c STOP
+c ENDIF
+
+C...Format for error printout.
+c 5000 FORMAT(1X,'Error: UPINIT routine failed to read information'/
+c &1X,'Execution stopped!')
+c 5100 FORMAT(1X,'Error: You have not implemented UPINIT routine'/
+c &1X,'Dummy routine in PYTHIA file called instead.'/
+c &1X,'Execution stopped!')
+
+c RETURN
+c END
+
+C*********************************************************************
+
+C...UPEVNT
+C...Dummy routine, to be replaced by a user implementing external
+C...processes. Depending on cross section model chosen, it either has
+C...to generate a process of the type IDPRUP requested, or pick a type
+C...itself and generate this event. The event is to be stored in the
+C...HEPEUP commonblock, including (often) an event weight.
+
+C...New example: handles a standard Les Houches Events File.
+
+ SUBROUTINE UPEVNT
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...PYTHIA commonblock: only used to provide read unit MSTP(162).
+ COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+ SAVE /PYPARS/
+
+C...User process event common block.
+ INTEGER MAXNUP
+ PARAMETER (MAXNUP=500)
+ INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+ DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+ COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+ &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+ &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+ SAVE /HEPEUP/
+
+C...Lines to read in assumed never longer than 200 characters.
+ PARAMETER (MAXLEN=200)
+ CHARACTER*(MAXLEN) STRING
+
+C...Format for reading lines.
+ CHARACTER*6 STRFMT
+ STRFMT='(A000)'
+ WRITE(STRFMT(3:5),'(I3)') MAXLEN
+
+C...Loop until finds line beginning with "<event>" or "<event ".
+ 100 READ(MSTP(162),STRFMT,END=130,ERR=130) STRING
+ IBEG=0
+ 110 IBEG=IBEG+1
+C...Allow indentation.
+ IF(STRING(IBEG:IBEG).EQ.' '.AND.IBEG.LT.MAXLEN-6) GOTO 110
+ IF(STRING(IBEG:IBEG+6).NE.'<event>'.AND.
+ &STRING(IBEG:IBEG+6).NE.'<event ') GOTO 100
+
+C...Read first line of event info.
+ READ(MSTP(162),*,END=130,ERR=130) NUP,IDPRUP,XWGTUP,SCALUP,
+ &AQEDUP,AQCDUP
+
+C...Read NUP subsequent lines with information on each particle.
+ DO 120 I=1,NUP
+ READ(MSTP(162),*,END=130,ERR=130) IDUP(I),ISTUP(I),
+ & MOTHUP(1,I),MOTHUP(2,I),ICOLUP(1,I),ICOLUP(2,I),
+ & (PUP(J,I),J=1,5),VTIMUP(I),SPINUP(I)
+ 120 CONTINUE
+ RETURN
+
+C...Error exit, typically when no more events.
+ 130 WRITE(*,*) ' Failed to read LHEF event information.'
+ WRITE(*,*) ' Will assume end of file has been reached.'
+ NUP=0
+ MSTI(51)=1
+
+ RETURN
+ END
+
+C...Old example: handles a simple Pythia 6.4 event file.
+
+c SUBROUTINE UPEVNT
+
+C...Double precision and integer declarations.
+c IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+c IMPLICIT INTEGER(I-N)
+
+C...Commonblocks.
+c COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+c COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
+c SAVE /PYDAT1/,/PYPARS/
+
+C...User process event common block.
+c INTEGER MAXNUP
+c PARAMETER (MAXNUP=500)
+c INTEGER NUP,IDPRUP,IDUP,ISTUP,MOTHUP,ICOLUP
+c DOUBLE PRECISION XWGTUP,SCALUP,AQEDUP,AQCDUP,PUP,VTIMUP,SPINUP
+c COMMON/HEPEUP/NUP,IDPRUP,XWGTUP,SCALUP,AQEDUP,AQCDUP,IDUP(MAXNUP),
+c &ISTUP(MAXNUP),MOTHUP(2,MAXNUP),ICOLUP(2,MAXNUP),PUP(5,MAXNUP),
+c &VTIMUP(MAXNUP),SPINUP(MAXNUP)
+c SAVE /HEPEUP/
+
+C...Read info from file.
+c IF(MSTP(162).GT.0) THEN
+c READ(MSTP(162),*,END=110,ERR=110) NUP,IDPRUP,XWGTUP,SCALUP,
+c & AQEDUP,AQCDUP
+c DO 100 I=1,NUP
+c READ(MSTP(162),*,END=110,ERR=110) IDUP(I),ISTUP(I),
+c & MOTHUP(1,I),MOTHUP(2,I),ICOLUP(1,I),ICOLUP(2,I),
+c & (PUP(J,I),J=1,5),VTIMUP(I),SPINUP(I)
+c 100 CONTINUE
+c RETURN
+C...Special when reached end of file or other error.
+c 110 NUP=0
+
+C...Else not implemented.
+c ELSE
+c WRITE(MSTU(11),5000)
+c STOP
+c ENDIF
+
+C...Format for error printout.
+c 5000 FORMAT(1X,'Error: You have not implemented UPEVNT routine'/
+c &1X,'Dummy routine in PYTHIA file called instead.'/
+c &1X,'Execution stopped!')
+
+c RETURN
+c END
+
+C*********************************************************************
+
+C...UPVETO
+C...Dummy routine, to be replaced by user, to veto event generation
+C...on the parton level, after parton showers but before multiple
+C...interactions, beam remnants and hadronization is added.
+C...If resonances like W, Z, top, Higgs and SUSY particles are handed
+C...undecayed from UPEVNT, or are generated by PYTHIA, they will also
+C...be undecayed at this stage; if decayed their decay products will
+C...have been allowed to shower.
+
+C...All partons at the end of the shower phase are stored in the
+C...HEPEVT commonblock. The interesting information is
+C...NHEP = the number of such partons, in entries 1 <= i <= NHEP,
+C...IDHEP(I) = the particle ID code according to PDG conventions,
+C...PHEP(J,I) = the (p_x, p_y, p_z, E, m) of the particle.
+C...All ISTHEP entries are 1, while the rest is zeroed.
+
+C...The user decision is to be conveyed by the IVETO value.
+C...IVETO = 0 : retain current event and generate in full;
+C... = 1 : abort generation of current event and move to next.
+
+ SUBROUTINE UPVETO(IVETO)
+
+C...HEPEVT commonblock.
+ PARAMETER (NMXHEP=4000)
+ COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHEP),IDHEP(NMXHEP),
+ &JMOHEP(2,NMXHEP),JDAHEP(2,NMXHEP),PHEP(5,NMXHEP),VHEP(4,NMXHEP)
+ DOUBLE PRECISION PHEP,VHEP
+ SAVE /HEPEVT/
+
+C...Next few lines allow you to see what info PYVETO extracted from
+C...the full event record for the first two events.
+C...Delete if you don't want it.
+ DATA NLIST/0/
+ SAVE NLIST
+ IF(NLIST.LE.2) THEN
+ WRITE(*,*) ' Full event record at time of UPVETO call:'
+ CALL PYLIST(1)
+ WRITE(*,*) ' Part of event record made available to UPVETO:'
+ CALL PYLIST(5)
+ NLIST=NLIST+1
+ ENDIF
+
+C...Make decision here.
+ IVETO = 0
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C*********************************************************************
+
+C...SUGRA
+C...Dummy routine, to be removed when ISAJET (ISASUSY) is to be linked.
+
+ SUBROUTINE SUGRA(MZERO,MHLF,AZERO,TANB,SGNMU,MTOP,IMODL)
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ REAL MZERO,MHLF,AZERO,TANB,SGNMU,MTOP
+ INTEGER IMODL
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Stop program if this routine is ever called.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(110)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link ISAJET correctly.'/
+ &1X,'Dummy routine SUGRA in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...VISAJE
+C...Dummy function, to be removed when ISAJET (ISASUSY) is to be linked.
+
+ FUNCTION VISAJE()
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ CHARACTER*40 VISAJE
+
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Assign default value.
+ VISAJE='Undefined'
+
+C...Stop program if this routine is ever called.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(110)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link ISAJET correctly.'/
+ &1X,'Dummy function VISAJE in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...SSMSSM
+C...Dummy function, to be removed when ISAJET (ISASUSY) is to be linked.
+
+ SUBROUTINE SSMSSM(RDUM1,RDUM2,RDUM3,RDUM4,RDUM5,RDUM6,RDUM7,
+ &RDUM8,RDUM9,RDUM10,RDUM11,RDUM12,RDUM13,RDUM14,RDUM15,RDUM16,
+ &RDUM17,RDUM18,RDUM19,RDUM20,RDUM21,RDUM22,RDUM23,RDUM24,RDUM25,
+ &IDUM1,IDUM2)
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ REAL RDUM1,RDUM2,RDUM3,RDUM4,RDUM5,RDUM6,RDUM7,RDUM8,RDUM9,
+ &RDUM10,RDUM11,RDUM12,RDUM13,RDUM14,RDUM15,RDUM16,RDUM17,RDUM18,
+ &RDUM19,RDUM20,RDUM21,RDUM22,RDUM23,RDUM24,RDUM25
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Stop program if this routine is ever called.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(110)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link ISAJET correctly.'/
+ &1X,'Dummy routine SSMSSM in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+ RETURN
+ END
+
+C*********************************************************************
+
+C...FHSETFLAGS
+C...Dummy function, to be removed when FEYNHIGGS is to be linked.
+
+ SUBROUTINE FHSETFLAGS(IERR,IMSP,IFR,ITBR,IHMX,IP2A,ILP,ITR,IBR)
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+Cmssmpart = 4 # full MSSM [recommended]
+Cfieldren = 0 # MSbar field ren. [strongly recommended]
+Ctanbren = 0 # MSbar TB-ren. [strongly recommended]
+Chiggsmix = 2 # 2x2 (h0-HH) mixing in the neutral Higgs sector
+Cp2approx = 0 # no approximation [recommended]
+Clooplevel= 2 # include 2-loop corrections
+Ctl_running_mt= 1 # running top mass in 2-loop corrections [recommended]
+Ctl_bot_resum = 1 # resummed MB in 2-loop corrections [recommended]
+
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Stop program if this routine is ever called.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(103)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link FEYNHIGGS correctly.'/
+ &1X,'Dummy routine FHSETFLAGS in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+ RETURN
+ END
+
+C*********************************************************************
+
+C...FHSETPARA
+C...Dummy function, to be removed when FEYNHIGGS is to be linked.
+
+ SUBROUTINE FHSETPARA(IER,SCF,DMT,DMB,DMW,DMZ,DTANB,DMA,DMH,DM3L,
+ & DM3E,DM3Q,DM3U,DM3D,DM2L,DM2E,DM2Q,DM2U, DM2D,DM1L,DM1E,DM1Q,
+ & DM1U,DM1D,DMU,AE33,AU33,AD33,AE22,AU22,AD22,AE11,AU11,AD11,
+ & DM1,DM2,DM3,RLT,RLB,QTAU,QT,QB)
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+ DOUBLE COMPLEX SAEFF, UHIGGS(3,3)
+ DOUBLE COMPLEX DMU,
+ & AE33, AU33, AD33, AE22, AU22, AD22, AE11, AU11, AD11,
+ & DM1, DM2, DM3
+
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Stop program if this routine is ever called.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(103)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link FEYNHIGGS correctly.'/
+ &1X,'Dummy routine FHSETPARA in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+ RETURN
+ END
+
+C*********************************************************************
+
+C...FHHIGGSCORR
+C...Dummy function, to be removed when FEYNHIGGS is to be linked.
+
+ SUBROUTINE FHHIGGSCORR(IERR, RMHIGG, SAEFF, UHIGGS)
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+
+C...FeynHiggs variables
+ DOUBLE PRECISION RMHIGG(4)
+ DOUBLE COMPLEX SAEFF, UHIGGS(3,3)
+ DOUBLE COMPLEX DMU,
+ & AE33, AU33, AD33, AE22, AU22, AD22, AE11, AU11, AD11,
+ & DM1, DM2, DM3
+
+C...Commonblocks.
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYDAT1/
+
+C...Stop program if this routine is ever called.
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(103)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link FEYNHIGGS correctly.'/
+ &1X,'Dummy routine FHSETPARA in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTAUD
+C...Dummy routine, to be replaced by user, to handle the decay of a
+C...polarized tau lepton.
+C...Input:
+C...ITAU is the position where the decaying tau is stored in /PYJETS/.
+C...IORIG is the position where the mother of the tau is stored;
+C... is 0 when the mother is not stored.
+C...KFORIG is the flavour of the mother of the tau;
+C... is 0 when the mother is not known.
+C...Note that IORIG=0 does not necessarily imply KFORIG=0;
+C... e.g. in B hadron semileptonic decays the W propagator
+C... is not explicitly stored but the W code is still unambiguous.
+C...Output:
+C...NDECAY is the number of decay products in the current tau decay.
+C...These decay products should be added to the /PYJETS/ common block,
+C...in positions N+1 through N+NDECAY. For each product I you must
+C...give the flavour codes K(I,2) and the five-momenta P(I,1), P(I,2),
+C...P(I,3), P(I,4) and P(I,5). The rest will be stored automatically.
+
+ SUBROUTINE PYTAUD(ITAU,IORIG,KFORIG,NDECAY)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+C...Commonblocks.
+ COMMON/PYJETS/N,NPAD,K(4000,5),P(4000,5),V(4000,5)
+ COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
+ SAVE /PYJETS/,/PYDAT1/
+
+C...Stop program if this routine is ever called.
+C...You should not copy these lines to your own routine.
+ NDECAY=ITAU+IORIG+KFORIG
+ WRITE(MSTU(11),5000)
+ CALL PYSTOP(10)
+
+C...Format for error printout.
+ 5000 FORMAT(1X,'Error: you did not link your PYTAUD routine ',
+ &'correctly.'/1X,'Dummy routine in PYTHIA file called instead.'/
+ &1X,'Execution stopped!')
+
+ RETURN
+ END
+
+C*********************************************************************
+
+C...PYTIME
+C...Finds current date and time.
+C...Since this task is not standardized in Fortran 77, the routine
+C...is dummy, to be replaced by the user. Examples are given for
+C...the Fortran 90 routine and DEC Fortran 77, and what to do if
+C...you do not have access to suitable routines.
+
+ SUBROUTINE PYTIME(IDATI)
+
+C...Double precision and integer declarations.
+ IMPLICIT DOUBLE PRECISION(A-H, O-Z)
+ IMPLICIT INTEGER(I-N)
+ INTEGER PYK,PYCHGE,PYCOMP
+ CHARACTER*8 ATIME
+C...Local array.
+ INTEGER IDATI(6),IDTEMP(3),IVAL(8)
+
+C...Example 0: if you do not have suitable routines.
+ DO 100 J=1,6
+ IDATI(J)=0
+ 100 CONTINUE
+
+C...Example 1: Fortran 90 routine.
+C CALL DATE_AND_TIME(VALUES=IVAL)
+C IDATI(1)=IVAL(1)
+C IDATI(2)=IVAL(2)
+C IDATI(3)=IVAL(3)
+C IDATI(4)=IVAL(5)
+C IDATI(5)=IVAL(6)
+C IDATI(6)=IVAL(7)
+
+C...Example 2: DEC Fortran 77. AIX.
+C CALL IDATE(IMON,IDAY,IYEAR)
+C IDATI(1)=IYEAR
+C IDATI(2)=IMON
+C IDATI(3)=IDAY
+C CALL ITIME(IHOUR,IMIN,ISEC)
+C IDATI(4)=IHOUR
+C IDATI(5)=IMIN
+C IDATI(6)=ISEC
+
+C...Example 3: DEC Fortran, IRIX, IRIX64.
+C CALL IDATE(IMON,IDAY,IYEAR)
+C IDATI(1)=IYEAR
+C IDATI(2)=IMON
+C IDATI(3)=IDAY
+C CALL TIME(ATIME)
+C IHOUR=0
+C IMIN=0
+C ISEC=0
+C READ(ATIME(1:2),'(I2)') IHOUR
+C READ(ATIME(4:5),'(I2)') IMIN
+C READ(ATIME(7:8),'(I2)') ISEC
+C IDATI(4)=IHOUR
+C IDATI(5)=IMIN
+C IDATI(6)=ISEC
+
+C...Example 4: GNU LINUX libU77, SunOS.
+C CALL IDATE(IDTEMP)
+C IDATI(1)=IDTEMP(3)
+C IDATI(2)=IDTEMP(2)
+C IDATI(3)=IDTEMP(1)
+C CALL ITIME(IDTEMP)
+C IDATI(4)=IDTEMP(1)
+C IDATI(5)=IDTEMP(2)
+C IDATI(6)=IDTEMP(3)
+
+C...Common code to ensure right century.
+ IDATI(1)=2000+MOD(IDATI(1),100)
+
+ RETURN
+ END
+
+
+
+
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