DATA MRLU/19780503,0,0,97,33,0/
END
- SUBROUTINE PYINIT(FRAME,BEAM,TARGET,WIN)
+ SUBROUTINE PYINITA(FRAME,BEAM,TARGET,WIN)
C...Initializes the generation procedure; finds maxima of the
C...differential cross-sections to be used for weighting.
CHFRAM=FRAME//' '
CHBEAM=BEAM//' '
CHTARG=TARGET//' '
- CALL PYINKI(CHFRAM,CHBEAM,CHTARG,WIN)
+ CALL PYINKIA(CHFRAM,CHBEAM,CHTARG,WIN)
C...Select partonic subprocesses to be included in the simulation.
IF(MSEL.NE.0) THEN
ENDIF
C...Initialize widths and partial widths for resonances.
- CALL PYINRE
+ CALL PYINREA
C...Reset variables for cross-section calculation.
DO 150 I=0,200
VINT(108)=0.
C...Find parametrized total cross-sections.
- IF(MINT(43).EQ.4) CALL PYXTOT
+ IF(MINT(43).EQ.4) CALL PYXTOTA
C...Maxima of differential cross-sections.
- IF(MSTP(121).LE.0) CALL PYMAXI
+ IF(MSTP(121).LE.0) CALL PYMAXIA
C...Initialize possibility of overlayed events.
IF(MSTP(131).NE.0) CALL PYOVLY(1)
C...Initialize multiple interactions with variable impact parameter.
IF(MINT(43).EQ.4.AND.(MINT(45).NE.0.OR.MSTP(131).NE.0).AND.
- &MSTP(82).GE.2) CALL PYMULT(1)
+ &MSTP(82).GE.2) CALL PYMULTA(1)
C IF(MSTP(122).GE.1) WRITE(MSTU(11),1600)
C...Formats for initialization information.
clin 1000 FORMAT(///20X,'The Lund Monte Carlo - PYTHIA version ',I1,'.',I1/
clin &20X,'** Last date of change: ',I2,1X,A3,1X,I4,' **'/)
-clin 1100 FORMAT('1',18('*'),1X,'PYINIT: initialization of PYTHIA ',
+clin 1100 FORMAT('1',18('*'),1X,'PYINITA: initialization of PYTHIA ',
clin &'routines',1X,17('*'))
1200 FORMAT(1X,'Error: process number ',I3,' not meaningful for ',A6,
&'-',A6,' interactions.'/1X,'Execution stopped!')
&1X,'Execution stopped!')
1500 FORMAT(1X,'Error: no subprocess switched on.'/
&1X,'Execution stopped.')
-clin 1600 FORMAT(/1X,22('*'),1X,'PYINIT: initialization completed',1X,
+clin 1600 FORMAT(/1X,22('*'),1X,'PYINITA: initialization completed',1X,
clin &22('*'))
RETURN
C*********************************************************************
- SUBROUTINE PYTHIA
+ SUBROUTINE PYTHIAA
C...Administers the generation of a high-pt event via calls to a number
C...of subroutines; also computes cross-sections.
IF(IOVL.EQ.1) NGEN(0,2)=NGEN(0,2)+1
MINT(31)=0
MINT(51)=0
- CALL PYRAND
+ CALL PYRANDA
ISUB=MINT(1)
IF(IOVL.EQ.1) THEN
NGEN(ISUB,2)=NGEN(ISUB,2)+1
IF(ISUB.LE.90.OR.ISUB.GE.95) THEN
C...Hard scattering (including low-pT):
C...reconstruct kinematics and colour flow of hard scattering.
- CALL PYSCAT
+ CALL PYSCATA
IF(MINT(51).EQ.1) GOTO 100
C...Showering of initial state partons (optional).
IPU1=MINT(84)+1
IPU2=MINT(84)+2
IF(MSTP(61).GE.1.AND.MINT(43).NE.1.AND.ISUB.NE.95)
- & CALL PYSSPA(IPU1,IPU2)
+ & CALL PYSSPAA(IPU1,IPU2)
NSAV1=N
C...Multiple interactions.
IF(MSTP(81).GE.1.AND.MINT(43).EQ.4.AND.ISUB.NE.95)
- & CALL PYMULT(6)
+ & CALL PYMULTA(6)
MINT(1)=ISUB
NSAV2=N
C...Hadron remnants and primordial kT.
- CALL PYREMN(IPU1,IPU2)
+ CALL PYREMNA(IPU1,IPU2)
IF(MINT(51).EQ.1) GOTO 100
NSAV3=N
ENDIF
C...Decay of final state resonances.
- IF(MSTP(41).GE.1.AND.ISUB.NE.95) CALL PYRESD
+ IF(MSTP(41).GE.1.AND.ISUB.NE.95) CALL PYRESDA
ELSE
C...Diffractive and elastic scattering.
- CALL PYDIFF
+ CALL PYDIFFA
IF(IOVL.EQ.1) THEN
PARI(65)=2.*PARI(17)
PARI(66)=PARI(65)
ENDIF
C...Transform to the desired coordinate frame.
- 200 CALL PYFRAM(MSTP(124))
+ 200 CALL PYFRAMA(MSTP(124))
RETURN
END
C*********************************************************************
- SUBROUTINE PYINKI(CHFRAM,CHBEAM,CHTARG,WIN)
+ SUBROUTINE PYINKIA(CHFRAM,CHBEAM,CHTARG,WIN)
C...Identifies the two incoming particles and sets up kinematics,
C...including rotations and boosts to/from CM frame.
C*********************************************************************
- SUBROUTINE PYINRE
+ SUBROUTINE PYINREA
C...Calculates full and effective widths of guage bosons, stores masses
C...and widths, rescales coefficients to be used for resonance
C...W+/-:
WMAS=PMAS(24,1)
WFAC=AEM/(24.*XW)*WMAS
- CALL PYWIDT(24,WMAS,WDTP,WDTE)
+ CALL PYWIDTA(24,WMAS,WDTP,WDTE)
WIDS(24,1)=((WDTE(0,1)+WDTE(0,2))*(WDTE(0,1)+WDTE(0,3))+
&(WDTE(0,1)+WDTE(0,2)+WDTE(0,1)+WDTE(0,3))*(WDTE(0,4)+WDTE(0,5))+
&2.*WDTE(0,4)*WDTE(0,5))/WDTP(0)**2
C...H+/-:
HCMAS=PMAS(37,1)
HCFAC=AEM/(8.*XW)*(HCMAS/WMAS)**2*HCMAS
- CALL PYWIDT(37,HCMAS,WDTP,WDTE)
+ CALL PYWIDTA(37,HCMAS,WDTP,WDTE)
WIDS(37,1)=((WDTE(0,1)+WDTE(0,2))*(WDTE(0,1)+WDTE(0,3))+
&(WDTE(0,1)+WDTE(0,2)+WDTE(0,1)+WDTE(0,3))*(WDTE(0,4)+WDTE(0,5))+
&2.*WDTE(0,4)*WDTE(0,5))/WDTP(0)**2
C...Z0:
ZMAS=PMAS(23,1)
ZFAC=AEM/(48.*XW*(1.-XW))*ZMAS
- CALL PYWIDT(23,ZMAS,WDTP,WDTE)
+ CALL PYWIDTA(23,ZMAS,WDTP,WDTE)
WIDS(23,1)=((WDTE(0,1)+WDTE(0,2))**2+
&2.*(WDTE(0,1)+WDTE(0,2))*(WDTE(0,4)+WDTE(0,5))+
&2.*WDTE(0,4)*WDTE(0,5))/WDTP(0)**2
C...H0:
HMAS=PMAS(25,1)
HFAC=AEM/(8.*XW)*(HMAS/WMAS)**2*HMAS
- CALL PYWIDT(25,HMAS,WDTP,WDTE)
+ CALL PYWIDTA(25,HMAS,WDTP,WDTE)
WIDS(25,1)=((WDTE(0,1)+WDTE(0,2))**2+
&2.*(WDTE(0,1)+WDTE(0,2))*(WDTE(0,4)+WDTE(0,5))+
&2.*WDTE(0,4)*WDTE(0,5))/WDTP(0)**2
C...Z'0:
ZPMAS=PMAS(32,1)
ZPFAC=AEM/(48.*XW*(1.-XW))*ZPMAS
- CALL PYWIDT(32,ZPMAS,WDTP,WDTE)
+ CALL PYWIDTA(32,ZPMAS,WDTP,WDTE)
WIDS(32,1)=((WDTE(0,1)+WDTE(0,2)+WDTE(0,3))**2+
&2.*(WDTE(0,1)+WDTE(0,2))*(WDTE(0,4)+WDTE(0,5))+
&2.*WDTE(0,4)*WDTE(0,5))/WDTP(0)**2
C...R:
RMAS=PMAS(40,1)
RFAC=0.08*RMAS/((MSTP(1)-1)*(1.+6.*(1.+ULALPS(RMAS**2)/PARU(1))))
- CALL PYWIDT(40,RMAS,WDTP,WDTE)
+ CALL PYWIDTA(40,RMAS,WDTP,WDTE)
WIDS(40,1)=((WDTE(0,1)+WDTE(0,2))*(WDTE(0,1)+WDTE(0,3))+
&(WDTE(0,1)+WDTE(0,2)+WDTE(0,1)+WDTE(0,3))*(WDTE(0,4)+WDTE(0,5))+
&2.*WDTE(0,4)*WDTE(0,5))/WDTP(0)**2
C*********************************************************************
- SUBROUTINE PYXTOT
+ SUBROUTINE PYXTOTA
C...Parametrizes total, double diffractive, single diffractive and
C...elastic cross-sections for different energies and beams.
C*********************************************************************
- SUBROUTINE PYMAXI
+ SUBROUTINE PYMAXIA
C...Finds optimal set of coefficients for kinematical variable selection
C...and the maximum of the part of the differential cross-section used
C...Find limits and select tau, y*, cos(theta-hat) and tau' values,
C...in grid of phase space points.
- CALL PYKLIM(1)
+ CALL PYKLIMA(1)
NACC=0
DO 120 ITRY=1,NTRY
IF(MOD(ITRY-1,NPTS(2)*NPTS(3)*NPTS(4)).EQ.0) THEN
MTAU=1+(ITRY-1)/(NPTS(2)*NPTS(3)*NPTS(4))
- CALL PYKMAP(1,MTAU,0.5)
- IF(ISTSB.EQ.3.OR.ISTSB.EQ.4) CALL PYKLIM(4)
+ CALL PYKMAPA(1,MTAU,0.5)
+ IF(ISTSB.EQ.3.OR.ISTSB.EQ.4) CALL PYKLIMA(4)
ENDIF
IF((ISTSB.EQ.3.OR.ISTSB.EQ.4).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,0.5)
+ CALL PYKMAPA(4,MTAUP,0.5)
ENDIF
- IF(MOD(ITRY-1,NPTS(3)*NPTS(4)).EQ.0) CALL PYKLIM(2)
+ IF(MOD(ITRY-1,NPTS(3)*NPTS(4)).EQ.0) CALL PYKLIMA(2)
IF(MOD(ITRY-1,NPTS(4)).EQ.0) THEN
MYST=1+MOD((ITRY-1)/NPTS(4),NPTS(3))
- CALL PYKMAP(2,MYST,0.5)
- CALL PYKLIM(3)
+ CALL PYKMAPA(2,MYST,0.5)
+ CALL PYKLIMA(3)
ENDIF
IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
MCTH=1+MOD(ITRY-1,NPTS(4))
- CALL PYKMAP(3,MCTH,0.5)
+ CALL PYKMAPA(3,MCTH,0.5)
ENDIF
IF(ISUB.EQ.96) VINT(25)=VINT(21)*(1.-VINT(23)**2)
C...Calculate and store cross-section.
MINT(51)=0
- CALL PYKLIM(0)
+ CALL PYKLIMA(0)
IF(MINT(51).EQ.1) GOTO 120
NACC=NACC+1
MVARPT(NACC,1)=MTAU
MVARPT(NACC,4)=MCTH
DO 110 J=1,30
110 VINTPT(NACC,J)=VINT(10+J)
- CALL PYSIGH(NCHN,SIGS)
+ CALL PYSIGHA(NCHN,SIGS)
SIGSPT(NACC)=SIGS
IF(SIGS.GT.SIGSAM) SIGSAM=SIGS
IF(MSTP(122).GE.2) WRITE(MSTU(11),1100) MTAU,MTAUP,MYST,MCTH,
DO 290 IACC=1,NACC
DO 250 J=1,30
250 VINT(10+J)=VINTPT(IACC,J)
- CALL PYSIGH(NCHN,SIGS)
+ CALL PYSIGHA(NCHN,SIGS)
IEQ=0
DO 260 IMV=1,NMAX
260 IF(ABS(SIGS-SIGSMX(IMV)).LT.1E-4*(SIGS+SIGSMX(IMV))) IEQ=IMV
C...Convert to relevant variables and find derived new limits.
IF(IVAR.EQ.1) THEN
VTAU=VNEW
- CALL PYKMAP(1,MTAU,VTAU)
- IF(ISTSB.EQ.3.OR.ISTSB.EQ.4) CALL PYKLIM(4)
+ CALL PYKMAPA(1,MTAU,VTAU)
+ IF(ISTSB.EQ.3.OR.ISTSB.EQ.4) CALL PYKLIMA(4)
ENDIF
IF(IVAR.LE.2.AND.(ISTSB.EQ.3.OR.ISTSB.EQ.4)) THEN
IF(IVAR.EQ.2) VTAUP=VNEW
- CALL PYKMAP(4,MTAUP,VTAUP)
+ CALL PYKMAPA(4,MTAUP,VTAUP)
ENDIF
- IF(IVAR.LE.2) CALL PYKLIM(2)
+ IF(IVAR.LE.2) CALL PYKLIMA(2)
IF(IVAR.LE.3) THEN
IF(IVAR.EQ.3) VYST=VNEW
- CALL PYKMAP(2,MYST,VYST)
- CALL PYKLIM(3)
+ CALL PYKMAPA(2,MYST,VYST)
+ CALL PYKLIMA(3)
ENDIF
IF(ISTSB.EQ.2.OR.ISTSB.EQ.4) THEN
IF(IVAR.EQ.4) VCTH=VNEW
- CALL PYKMAP(3,MCTH,VCTH)
+ CALL PYKMAPA(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.
- CALL PYSIGH(NCHN,SIGS)
+ CALL PYSIGHA(NCHN,SIGS)
SIGSSM(INEW)=SIGS
IF(SIGS.GT.SIGSAM) SIGSAM=SIGS
IF(MSTP(122).GE.2) WRITE(MSTU(11),1700) IMAX,IVAR,MVAR,IMOV,
1600 FORMAT(1X,'Maximum search for given coefficients'/2X,'MAX VAR ',
&'MOD MOV VNEW',7X,'tau',7X,'y*',8X,'cth',7X,'tau''',7X,'sigma')
1700 FORMAT(1X,4I4,F8.4,F11.7,F9.3,F11.6,F11.7,1P,E12.4)
- 1800 FORMAT(/1X,8('*'),1X,'PYMAXI: summary of differential ',
+ 1800 FORMAT(/1X,8('*'),1X,'PYMAXIA: summary of differential ',
&'cross-section maximum search',1X,8('*'))
1900 FORMAT(/11X,58('=')/11X,'I',38X,'I',17X,'I'/11X,'I ISUB ',
&'Subprocess name',15X,'I Maximum value I'/11X,'I',38X,'I',
C*********************************************************************
- SUBROUTINE PYRAND
+ SUBROUTINE PYRANDA
C...Generates quantities characterizing the high-pT scattering at the
C...parton level according to the matrix elements. Chooses incoming,
MINT(18)=0
VINT(143)=1.
VINT(144)=1.
- IF(MSUB(95).EQ.1.OR.MINT(82).GE.2) CALL PYMULT(2)
+ IF(MSUB(95).EQ.1.OR.MINT(82).GE.2) CALL PYMULTA(2)
ISUB=0
100 MINT(51)=0
C...I0/I5*c5*tau/((s*tau-m'^2)^2+(m'*Gamma')^2), and
C...c0 + c1 + c2 + c3 + c4 + c5 = 1
ELSEIF(ISET(ISUB).GE.1.AND.ISET(ISUB).LE.4) THEN
- CALL PYKLIM(1)
+ CALL PYKLIMA(1)
IF(MINT(51).NE.0) GOTO 100
RTAU=RLU(0)
MTAU=1
& MTAU=5
IF(RTAU.GT.COEF(ISUB,1)+COEF(ISUB,2)+COEF(ISUB,3)+COEF(ISUB,4)+
& COEF(ISUB,5)) MTAU=6
- CALL PYKMAP(1,MTAU,RLU(0))
+ CALL PYKMAPA(1,MTAU,RLU(0))
C...2 -> 3, 4 processes:
C...Choose tau' according to h4(tau,tau')/tau', where
C...h4(tau,tau') = c0 + I0/I1*c1*(1 - tau/tau')^3/tau', and
C...c0 + c1 = 1.
IF(ISET(ISUB).EQ.3.OR.ISET(ISUB).EQ.4) THEN
- CALL PYKLIM(4)
+ CALL PYKLIMA(4)
IF(MINT(51).NE.0) GOTO 100
RTAUP=RLU(0)
MTAUP=1
IF(RTAUP.GT.COEF(ISUB,15)) MTAUP=2
- CALL PYKMAP(4,MTAUP,RLU(0))
+ CALL PYKMAPA(4,MTAUP,RLU(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 = y*max-y*min, and c1 + c2 + c3 = 1.
- CALL PYKLIM(2)
+ CALL PYKLIMA(2)
IF(MINT(51).NE.0) GOTO 100
RYST=RLU(0)
MYST=1
IF(RYST.GT.COEF(ISUB,7)) MYST=2
IF(RYST.GT.COEF(ISUB,7)+COEF(ISUB,8)) MYST=3
- CALL PYKMAP(2,MYST,RLU(0))
+ CALL PYKMAPA(2,MYST,RLU(0))
C...2 -> 2 processes:
C...Choose cos(theta-hat) (cth) according to h3(cth), where
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)
+ CALL PYKLIMA(3)
IF(MINT(51).NE.0) GOTO 100
IF(ISET(ISUB).EQ.2.OR.ISET(ISUB).EQ.4) THEN
RCTH=RLU(0)
IF(RCTH.GT.COEF(ISUB,10)+COEF(ISUB,11)+COEF(ISUB,12)) MCTH=4
IF(RCTH.GT.COEF(ISUB,10)+COEF(ISUB,11)+COEF(ISUB,12)+
& COEF(ISUB,13)) MCTH=5
- CALL PYKMAP(3,MCTH,RLU(0))
+ CALL PYKMAPA(3,MCTH,RLU(0))
ENDIF
C...Low-pT or multiple interactions (first semihard interaction).
ELSEIF(ISET(ISUB).EQ.5) THEN
- CALL PYMULT(3)
+ CALL PYMULTA(3)
ISUB=MINT(1)
ENDIF
C...Check against user cuts on kinematics at parton level.
MINT(51)=0
- IF(ISUB.LE.90.OR.ISUB.GT.100) CALL PYKLIM(0)
+ IF(ISUB.LE.90.OR.ISUB.GT.100) CALL PYKLIMA(0)
IF(MINT(51).NE.0) GOTO 100
IF(MINT(82).EQ.1.AND.MSTP(141).GE.1) THEN
MCUT=0
IF(MSUB(91)+MSUB(92)+MSUB(93)+MSUB(94)+MSUB(95).EQ.0)
- & CALL PYKCUT(MCUT)
+ & CALL PYKCUTA(MCUT)
IF(MCUT.NE.0) GOTO 100
ENDIF
C...Calculate differential cross-section for different subprocesses.
- CALL PYSIGH(NCHN,SIGS)
+ CALL PYSIGHA(NCHN,SIGS)
C...Calculations for Monte Carlo estimate of all cross-sections.
IF(MINT(82).EQ.1.AND.ISUB.LE.90.OR.ISUB.GE.96) THEN
C...Multiple interactions: store results of cross-section calculation.
IF(MINT(43).EQ.4.AND.MSTP(82).GE.3) THEN
VINT(153)=SIGS
- CALL PYMULT(4)
+ CALL PYMULTA(4)
ENDIF
C...Weighting using estimate of maximum of differential cross-section.
VINT(148)=1.
IF(MINT(43).EQ.4.AND.(ISUB.LE.90.OR.ISUB.GE.96).AND.MSTP(82).GE.3)
&THEN
- CALL PYMULT(5)
+ CALL PYMULTA(5)
IF(VINT(150).LT.RLU(0)) GOTO 100
ENDIF
IF(MINT(82).EQ.1.AND.MSUB(95).EQ.1) THEN
C...Multiple interactions: choose qqbar preferentially at small pT.
ELSEIF(ISUB.EQ.96) THEN
- CALL PYSPLI(MINT(11),21,KFL1,KFLDUM)
- CALL PYSPLI(MINT(12),21,KFL2,KFLDUM)
+ CALL PYSPLIA(MINT(11),21,KFL1,KFLDUM)
+ CALL PYSPLIA(MINT(12),21,KFL2,KFLDUM)
MINT(1)=11
MINT(2)=1
IF(KFL1.EQ.KFL2.AND.RLU(0).LT.0.5) MINT(2)=2
C*********************************************************************
- SUBROUTINE PYSCAT
+ SUBROUTINE PYSCATA
C...Finds outgoing flavours and event type; sets up the kinematics
C...and colour flow of the hard scattering.
C...Choose new quark flavour for relevant annihilation graphs.
IF(ISUB.EQ.12.OR.ISUB.EQ.53) THEN
- CALL PYWIDT(21,SHR,WDTP,WDTE)
+ CALL PYWIDTA(21,SHR,WDTP,WDTE)
RKFL=(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))*RLU(0)
DO 140 I=1,2*MSTP(1)
KFLQ=I
C*********************************************************************
- SUBROUTINE PYSSPA(IPU1,IPU2)
+ SUBROUTINE PYSSPAA(IPU1,IPU2)
C...Generates spacelike parton showers.
IMPLICIT DOUBLE PRECISION(D)
IF(JT.EQ.2) IPU2=N
ENDIF
IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
- CALL LUERRM(11,'(PYSSPA:) no more memory left in LUJETSA')
+ CALL LUERRM(11,'(PYSSPAS:) no more memory left in LUJETSA')
IF(MSTU(21).GE.1) N=NS
IF(MSTU(21).GE.1) RETURN
ENDIF
C*********************************************************************
- SUBROUTINE PYMULT(MMUL)
+ SUBROUTINE PYMULTA(MMUL)
C...Initializes treatment of multiple interactions, selects kinematics
C...of hardest interaction if low-pT physics included in run, and
TAU=XT2*(1.+TAN(RLU(0)*ATAN(SQRT(1./XT2-1.)))**2)
ENDIF
VINT(21)=TAU
- CALL PYKLIM(2)
+ CALL PYKLIMA(2)
RYST=RLU(0)
MYST=1
IF(RYST.GT.COEF(ISUB,7)) MYST=2
IF(RYST.GT.COEF(ISUB,7)+COEF(ISUB,8)) MYST=3
- CALL PYKMAP(2,MYST,RLU(0))
+ CALL PYKMAPA(2,MYST,RLU(0))
VINT(23)=SQRT(MAX(0.,1.-XT2/TAU))*(-1)**INT(1.5+RLU(0))
C...Calculate differential cross-section.
VINT(71)=0.5*VINT(1)*SQRT(XT2)
- CALL PYSIGH(NCHN,SIGS)
+ CALL PYSIGHA(NCHN,SIGS)
110 SIGM(IXT2)=SIGM(IXT2)+SIGS
120 SIGSUM=SIGSUM+SIGM(IXT2)
SIGSUM=SIGSUM/(20.*MSTP(83))
TAU=XT2*(1.+TAN(RLU(0)*ATAN(SQRT(1./XT2-1.)))**2)
ENDIF
VINT(21)=TAU
- CALL PYKLIM(2)
+ CALL PYKLIMA(2)
RYST=RLU(0)
MYST=1
IF(RYST.GT.COEF(ISUB,7)) MYST=2
IF(RYST.GT.COEF(ISUB,7)+COEF(ISUB,8)) MYST=3
- CALL PYKMAP(2,MYST,RLU(0))
+ CALL PYKMAPA(2,MYST,RLU(0))
VINT(23)=SQRT(MAX(0.,1.-XT2/TAU))*(-1)**INT(1.5+RLU(0))
ENDIF
VINT(71)=0.5*VINT(1)*SQRT(VINT(25))
TAU=XT2*(1.+TAN(RLU(0)*ATAN(SQRT(1./XT2-1.)))**2)
ENDIF
VINT(21)=TAU
- CALL PYKLIM(2)
+ CALL PYKLIMA(2)
RYST=RLU(0)
MYST=1
IF(RYST.GT.COEF(ISUB,7)) MYST=2
IF(RYST.GT.COEF(ISUB,7)+COEF(ISUB,8)) MYST=3
- CALL PYKMAP(2,MYST,RLU(0))
+ CALL PYKMAPA(2,MYST,RLU(0))
VINT(23)=SQRT(MAX(0.,1.-XT2/TAU))*(-1)**INT(1.5+RLU(0))
C...Check that x not used up. Accept or reject kinematical variables.
X2M=SQRT(TAU)*EXP(-VINT(22))
IF(VINT(143)-X1M.LT.0.01.OR.VINT(144)-X2M.LT.0.01) GOTO 180
VINT(71)=0.5*VINT(1)*SQRT(XT2)
- CALL PYSIGH(NCHN,SIGS)
+ CALL PYSIGHA(NCHN,SIGS)
IF(SIGS.LT.XSEC(ISUB,1)*RLU(0)) GOTO 180
C...Reset K, P and V vectors. Select some variables.
C...Update remaining energy; iterate.
N=N+2
IF(N.GT.MSTU(4)-MSTU(32)-10) THEN
- CALL LUERRM(11,'(PYMULT:) no more memory left in LUJETSA')
+ CALL LUERRM(11,'(PYMULTA:) no more memory left in LUJETSA')
IF(MSTU(21).GE.1) RETURN
ENDIF
MINT(31)=MINT(31)+1
ENDIF
C...Format statements for printout.
- 1000 FORMAT(/1X,'****** PYMULT: initialization of multiple inter',
+ 1000 FORMAT(/1X,'****** PYMULTA: initialization of multiple inter',
&'actions for MSTP(82) =',I2,' ******')
1100 FORMAT(8X,'pT0 =',F5.2,' GeV gives sigma(parton-parton) =',1P,
&E9.2,' mb: rejected')
C*********************************************************************
- SUBROUTINE PYREMN(IPU1,IPU2)
+ SUBROUTINE PYREMNA(IPU1,IPU2)
C...Adds on target remnants (one or two from each side) and
C...includes primordial kT.
IF(JT.EQ.ILEP) GOTO 190
IF(JT.EQ.1) IPU=IPU1
IF(JT.EQ.2) IPU=IPU2
- CALL PYSPLI(MINT(10+JT),MINT(12+JT),KFLCH(JT),KFLSP(JT))
+ CALL PYSPLIA(MINT(10+JT),MINT(12+JT),KFLCH(JT),KFLSP(JT))
I=I+1
IS(JT)=I
DO 150 J=1,5
C*********************************************************************
- SUBROUTINE PYRESD
+ SUBROUTINE PYRESDA
C...Allows resonances to decay (including parton showers for hadronic
C...channels).
IF(KFA.LT.23.OR.KFA.GT.40) GOTO 140
IF(MDCY(KFA,1).NE.0) THEN
IF(ISUB.EQ.1.OR.ISUB.EQ.141) MINT(61)=1
- CALL PYWIDT(KFA,P(ID,5),WDTP,WDTE)
+ CALL PYWIDTA(KFA,P(ID,5),WDTP,WDTE)
IF(KCHG(KFA,3).EQ.0) THEN
IPM=2
ELSE
C*********************************************************************
- SUBROUTINE PYDIFF
+ SUBROUTINE PYDIFFA
C...Handles diffractive and elastic scattering.
COMMON/LUJETSA/N,K(9000,5),P(9000,5),V(9000,5)
K(N,1)=1
K(N-1,3)=I+2
K(N,3)=I+2
- CALL PYSPLI(K(I,2),21,K(N,2),K(N-1,2))
+ CALL PYSPLIA(K(I,2),21,K(N,2),K(N-1,2))
P(N-1,5)=ULMASS(K(N-1,2))
P(N,5)=ULMASS(K(N,2))
SQLAM=(VINT(62+JT)-P(N-1,5)**2-P(N,5)**2)**2-
K(N-2,3)=I+2
K(N-1,3)=I+2
K(N,3)=I+2
- CALL PYSPLI(K(I,2),21,K(N,2),K(N-2,2))
+ CALL PYSPLIA(K(I,2),21,K(N,2),K(N-2,2))
K(N-1,2)=21
P(N-2,5)=ULMASS(K(N-2,2))
P(N-1,5)=0.
C*********************************************************************
- SUBROUTINE PYFRAM(IFRAME)
+ SUBROUTINE PYFRAMA(IFRAME)
C...Performs transformations between different coordinate frames.
COMMON/LUDAT1A/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
ENDIF
MSTI(6)=MINT(6)
- 1000 FORMAT(1X,'Error: illegal values in subroutine PYFRAM.',1X,
+ 1000 FORMAT(1X,'Error: illegal values in subroutine PYFRAMA.',1X,
&'No transformation performed.'/1X,'IFRAME =',1X,I5,'; MINT(6) =',
&1X,I5)
C*********************************************************************
- SUBROUTINE PYWIDT(KFLR,RMAS,WDTP,WDTE)
+ SUBROUTINE PYWIDTA(KFLR,RMAS,WDTP,WDTE)
C...Calculates full and partial widths of resonances.
COMMON/LUDAT1A/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
C***********************************************************************
- SUBROUTINE PYKLIM(ILIM)
+ SUBROUTINE PYKLIMA(ILIM)
C...Checks generated variables against pre-set kinematical limits;
C...also calculates limits on variables used in generation.
C*********************************************************************
- SUBROUTINE PYKMAP(IVAR,MVAR,VVAR)
+ SUBROUTINE PYKMAPA(IVAR,MVAR,VVAR)
C...Maps a uniform distribution into a distribution of a kinematical
C...variable according to one of the possibilities allowed. It is
C***********************************************************************
- SUBROUTINE PYSIGH(NCHN,SIGS)
+ SUBROUTINE PYSIGHA(NCHN,SIGS)
C...Differential matrix elements for all included subprocesses.
C...Note that what is coded is (disregarding the COMFAC factor)
IF(ISUB.EQ.1) THEN
C...f + fb -> gamma*/Z0.
MINT(61)=2
- CALL PYWIDT(23,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(23,SQRT(SH),WDTP,WDTE)
FACZ=COMFAC*AEM**2*4./3.
DO 150 I=MINA,MAXA
IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 150
ELSEIF(ISUB.EQ.2) THEN
C...f + fb' -> W+/-.
- CALL PYWIDT(24,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(24,SQRT(SH),WDTP,WDTE)
FACW=COMFAC*(AEM/XW)**2*1./24*SH2/((SH-SQMW)**2+GMMW**2)
DO 170 I=MIN1,MAX1
IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 170
ELSEIF(ISUB.EQ.3) THEN
C...f + fb -> H0.
- CALL PYWIDT(25,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(25,SQRT(SH),WDTP,WDTE)
FACH=COMFAC*(AEM/XW)**2*1./48.*(SH/SQMW)**2*
& SH2/((SH-SQMH)**2+GMMH**2)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
DO 180 I=MINA,MAXA
ELSEIF(ISUB.EQ.5) THEN
C...Z0 + Z0 -> H0.
- CALL PYWIDT(25,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(25,SQRT(SH),WDTP,WDTE)
FACH=COMFAC*1./(128.*PARU(1)**2*16.*(1.-XW)**3)*(AEM/XW)**4*
& (SH/SQMW)**2*SH2/((SH-SQMH)**2+GMMH**2)*
& (WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
ELSEIF(ISUB.EQ.8) THEN
C...W+ + W- -> H0.
- CALL PYWIDT(25,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(25,SQRT(SH),WDTP,WDTE)
FACH=COMFAC*1./(128*PARU(1)**2)*(AEM/XW)**4*(SH/SQMW)**2*
& SH2/((SH-SQMH)**2+GMMH**2)*(WDTE(0,1)+WDTE(0,2)+WDTE(0,4))
DO 220 I=MIN1,MAX1
ELSEIF(ISUB.EQ.12) THEN
C...f + fb -> f' + fb' (q + qb -> q' + qb' only).
- CALL PYWIDT(21,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(21,SQRT(SH),WDTP,WDTE)
FACQQB=COMFAC*AS**2*4./9.*(TH2+UH2)/SH2*(WDTE(0,1)+WDTE(0,2)+
& WDTE(0,3)+WDTE(0,4))
DO 250 I=MINA,MAXA
ELSEIF(ISUB.EQ.53) THEN
C...g + g -> f + fb (g + g -> q + qb only).
- CALL PYWIDT(21,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(21,SQRT(SH),WDTP,WDTE)
FACQQ1=COMFAC*AS**2*1./6.*(UH/TH-(2.+MSTP(34)*1./4.)*UH2/SH2)*
& (WDTE(0,1)+WDTE(0,2)+WDTE(0,3)+WDTE(0,4))*FACA
FACQQ2=COMFAC*AS**2*1./6.*(TH/UH-(2.+MSTP(34)*1./4.)*TH2/SH2)*
ELSEIF(ISUB.EQ.96) THEN
C...Multiple interactions: sum of QCD processes.
- CALL PYWIDT(21,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(21,SQRT(SH),WDTP,WDTE)
C...q + q' -> q + q'.
FACQQ1=COMFAC*AS**2*4./9.*(SH2+UH2)/TH2
ELSEIF(ISUB.EQ.102) THEN
C...g + g -> H0.
- CALL PYWIDT(25,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(25,SQRT(SH),WDTP,WDTE)
ETARE=0.
ETAIM=0.
DO 690 I=1,2*MSTP(1)
BEUTS=BESTU
BETSU=BEUST
BESUT=BETUS
- W3STUR=PYI3AU(BESTU,EPSH,1)-PYI3AU(BESTU,EPSS,1)-
- & PYI3AU(BESTU,EPSU,1)
- W3STUI=PYI3AU(BESTU,EPSH,2)-PYI3AU(BESTU,EPSS,2)-
- & PYI3AU(BESTU,EPSU,2)
- W3SUTR=PYI3AU(BESUT,EPSH,1)-PYI3AU(BESUT,EPSS,1)-
- & PYI3AU(BESUT,EPST,1)
- W3SUTI=PYI3AU(BESUT,EPSH,2)-PYI3AU(BESUT,EPSS,2)-
- & PYI3AU(BESUT,EPST,2)
- W3TSUR=PYI3AU(BETSU,EPSH,1)-PYI3AU(BETSU,EPST,1)-
- & PYI3AU(BETSU,EPSU,1)
- W3TSUI=PYI3AU(BETSU,EPSH,2)-PYI3AU(BETSU,EPST,2)-
- & PYI3AU(BETSU,EPSU,2)
- W3TUSR=PYI3AU(BETUS,EPSH,1)-PYI3AU(BETUS,EPST,1)-
- & PYI3AU(BETUS,EPSS,1)
- W3TUSI=PYI3AU(BETUS,EPSH,2)-PYI3AU(BETUS,EPST,2)-
- & PYI3AU(BETUS,EPSS,2)
- W3USTR=PYI3AU(BEUST,EPSH,1)-PYI3AU(BEUST,EPSU,1)-
- & PYI3AU(BEUST,EPST,1)
- W3USTI=PYI3AU(BEUST,EPSH,2)-PYI3AU(BEUST,EPSU,2)-
- & PYI3AU(BEUST,EPST,2)
- W3UTSR=PYI3AU(BEUTS,EPSH,1)-PYI3AU(BEUTS,EPSU,1)-
- & PYI3AU(BEUTS,EPSS,1)
- W3UTSI=PYI3AU(BEUTS,EPSH,2)-PYI3AU(BEUTS,EPSU,2)-
- & PYI3AU(BEUTS,EPSS,2)
+ W3STUR=PYI3AA(BESTU,EPSH,1)-PYI3AA(BESTU,EPSS,1)-
+ & PYI3AA(BESTU,EPSU,1)
+ W3STUI=PYI3AA(BESTU,EPSH,2)-PYI3AA(BESTU,EPSS,2)-
+ & PYI3AA(BESTU,EPSU,2)
+ W3SUTR=PYI3AA(BESUT,EPSH,1)-PYI3AA(BESUT,EPSS,1)-
+ & PYI3AA(BESUT,EPST,1)
+ W3SUTI=PYI3AA(BESUT,EPSH,2)-PYI3AA(BESUT,EPSS,2)-
+ & PYI3AA(BESUT,EPST,2)
+ W3TSUR=PYI3AA(BETSU,EPSH,1)-PYI3AA(BETSU,EPST,1)-
+ & PYI3AA(BETSU,EPSU,1)
+ W3TSUI=PYI3AA(BETSU,EPSH,2)-PYI3AA(BETSU,EPST,2)-
+ & PYI3AA(BETSU,EPSU,2)
+ W3TUSR=PYI3AA(BETUS,EPSH,1)-PYI3AA(BETUS,EPST,1)-
+ & PYI3AA(BETUS,EPSS,1)
+ W3TUSI=PYI3AA(BETUS,EPSH,2)-PYI3AA(BETUS,EPST,2)-
+ & PYI3AA(BETUS,EPSS,2)
+ W3USTR=PYI3AA(BEUST,EPSH,1)-PYI3AA(BEUST,EPSU,1)-
+ & PYI3AA(BEUST,EPST,1)
+ W3USTI=PYI3AA(BEUST,EPSH,2)-PYI3AA(BEUST,EPSU,2)-
+ & PYI3AA(BEUST,EPST,2)
+ W3UTSR=PYI3AA(BEUTS,EPSH,1)-PYI3AA(BEUTS,EPSU,1)-
+ & PYI3AA(BEUTS,EPSS,1)
+ W3UTSI=PYI3AA(BEUTS,EPSH,2)-PYI3AA(BEUTS,EPSU,2)-
+ & PYI3AA(BEUTS,EPSS,2)
B2STUR=SQMQ/SQMH**2*(SH*(UH-SH)/(SH+UH)+2.*TH*UH*(UH+2.*SH)/
& (SH+UH)**2*(PYW1AU(EPST,1)-PYW1AU(EPSH,1))+(SQMQ-SH/4.)*
& (0.5*PYW2AU(EPSS,1)+0.5*PYW2AU(EPSH,1)-PYW2AU(EPST,1)+W3STUR)+
BESUT=BETUS
A0STUR=1.+(1.+2.*TH/SH)*PYW1AU(EPST,1)+(1.+2.*UH/SH)*
& PYW1AU(EPSU,1)+0.5*((TH2+UH2)/SH2-EPSS)*(PYW2AU(EPST,1)+
- & PYW2AU(EPSU,1))-0.25*EPST*(1.-0.5*EPSS)*(PYI3AU(BESUT,EPSS,1)+
- & PYI3AU(BESUT,EPST,1))-0.25*EPSU*(1.-0.5*EPSS)*
- & (PYI3AU(BESTU,EPSS,1)+PYI3AU(BESTU,EPSU,1))+
+ & PYW2AU(EPSU,1))-0.25*EPST*(1.-0.5*EPSS)*(PYI3AA(BESUT,EPSS,1)+
+ & PYI3AA(BESUT,EPST,1))-0.25*EPSU*(1.-0.5*EPSS)*
+ & (PYI3AA(BESTU,EPSS,1)+PYI3AA(BESTU,EPSU,1))+
& 0.25*(-2.*(TH2+UH2)/SH2+4.*EPSS+EPST+EPSU+0.5*EPST*EPSU)*
- & (PYI3AU(BETSU,EPST,1)+PYI3AU(BETSU,EPSU,1))
+ & (PYI3AA(BETSU,EPST,1)+PYI3AA(BETSU,EPSU,1))
A0STUI=(1.+2.*TH/SH)*PYW1AU(EPST,2)+(1.+2.*UH/SH)*
& PYW1AU(EPSU,2)+0.5*((TH2+UH2)/SH2-EPSS)*(PYW2AU(EPST,2)+
- & PYW2AU(EPSU,2))-0.25*EPST*(1.-0.5*EPSS)*(PYI3AU(BESUT,EPSS,2)+
- & PYI3AU(BESUT,EPST,2))-0.25*EPSU*(1.-0.5*EPSS)*
- & (PYI3AU(BESTU,EPSS,2)+PYI3AU(BESTU,EPSU,2))+
+ & PYW2AU(EPSU,2))-0.25*EPST*(1.-0.5*EPSS)*(PYI3AA(BESUT,EPSS,2)+
+ & PYI3AA(BESUT,EPST,2))-0.25*EPSU*(1.-0.5*EPSS)*
+ & (PYI3AA(BESTU,EPSS,2)+PYI3AA(BESTU,EPSU,2))+
& 0.25*(-2.*(TH2+UH2)/SH2+4.*EPSS+EPST+EPSU+0.5*EPST*EPSU)*
- & (PYI3AU(BETSU,EPST,2)+PYI3AU(BETSU,EPSU,2))
+ & (PYI3AA(BETSU,EPST,2)+PYI3AA(BETSU,EPSU,2))
A0TSUR=1.+(1.+2.*SH/TH)*PYW1AU(EPSS,1)+(1.+2.*UH/TH)*
& PYW1AU(EPSU,1)+0.5*((SH2+UH2)/TH2-EPST)*(PYW2AU(EPSS,1)+
- & PYW2AU(EPSU,1))-0.25*EPSS*(1.-0.5*EPST)*(PYI3AU(BETUS,EPST,1)+
- & PYI3AU(BETUS,EPSS,1))-0.25*EPSU*(1.-0.5*EPST)*
- & (PYI3AU(BETSU,EPST,1)+PYI3AU(BETSU,EPSU,1))+
+ & PYW2AU(EPSU,1))-0.25*EPSS*(1.-0.5*EPST)*(PYI3AA(BETUS,EPST,1)+
+ & PYI3AA(BETUS,EPSS,1))-0.25*EPSU*(1.-0.5*EPST)*
+ & (PYI3AA(BETSU,EPST,1)+PYI3AA(BETSU,EPSU,1))+
& 0.25*(-2.*(SH2+UH2)/TH2+4.*EPST+EPSS+EPSU+0.5*EPSS*EPSU)*
- & (PYI3AU(BESTU,EPSS,1)+PYI3AU(BESTU,EPSU,1))
+ & (PYI3AA(BESTU,EPSS,1)+PYI3AA(BESTU,EPSU,1))
A0TSUI=(1.+2.*SH/TH)*PYW1AU(EPSS,2)+(1.+2.*UH/TH)*
& PYW1AU(EPSU,2)+0.5*((SH2+UH2)/TH2-EPST)*(PYW2AU(EPSS,2)+
- & PYW2AU(EPSU,2))-0.25*EPSS*(1.-0.5*EPST)*(PYI3AU(BETUS,EPST,2)+
- & PYI3AU(BETUS,EPSS,2))-0.25*EPSU*(1.-0.5*EPST)*
- & (PYI3AU(BETSU,EPST,2)+PYI3AU(BETSU,EPSU,2))+
+ & PYW2AU(EPSU,2))-0.25*EPSS*(1.-0.5*EPST)*(PYI3AA(BETUS,EPST,2)+
+ & PYI3AA(BETUS,EPSS,2))-0.25*EPSU*(1.-0.5*EPST)*
+ & (PYI3AA(BETSU,EPST,2)+PYI3AA(BETSU,EPSU,2))+
& 0.25*(-2.*(SH2+UH2)/TH2+4.*EPST+EPSS+EPSU+0.5*EPSS*EPSU)*
- & (PYI3AU(BESTU,EPSS,2)+PYI3AU(BESTU,EPSU,2))
+ & (PYI3AA(BESTU,EPSS,2)+PYI3AA(BESTU,EPSU,2))
A0UTSR=1.+(1.+2.*TH/UH)*PYW1AU(EPST,1)+(1.+2.*SH/UH)*
& PYW1AU(EPSS,1)+0.5*((TH2+SH2)/UH2-EPSU)*(PYW2AU(EPST,1)+
- & PYW2AU(EPSS,1))-0.25*EPST*(1.-0.5*EPSU)*(PYI3AU(BEUST,EPSU,1)+
- & PYI3AU(BEUST,EPST,1))-0.25*EPSS*(1.-0.5*EPSU)*
- & (PYI3AU(BEUTS,EPSU,1)+PYI3AU(BEUTS,EPSS,1))+
+ & PYW2AU(EPSS,1))-0.25*EPST*(1.-0.5*EPSU)*(PYI3AA(BEUST,EPSU,1)+
+ & PYI3AA(BEUST,EPST,1))-0.25*EPSS*(1.-0.5*EPSU)*
+ & (PYI3AA(BEUTS,EPSU,1)+PYI3AA(BEUTS,EPSS,1))+
& 0.25*(-2.*(TH2+SH2)/UH2+4.*EPSU+EPST+EPSS+0.5*EPST*EPSS)*
- & (PYI3AU(BETUS,EPST,1)+PYI3AU(BETUS,EPSS,1))
+ & (PYI3AA(BETUS,EPST,1)+PYI3AA(BETUS,EPSS,1))
A0UTSI=(1.+2.*TH/UH)*PYW1AU(EPST,2)+(1.+2.*SH/UH)*
& PYW1AU(EPSS,2)+0.5*((TH2+SH2)/UH2-EPSU)*(PYW2AU(EPST,2)+
- & PYW2AU(EPSS,2))-0.25*EPST*(1.-0.5*EPSU)*(PYI3AU(BEUST,EPSU,2)+
- & PYI3AU(BEUST,EPST,2))-0.25*EPSS*(1.-0.5*EPSU)*
- & (PYI3AU(BEUTS,EPSU,2)+PYI3AU(BEUTS,EPSS,2))+
+ & PYW2AU(EPSS,2))-0.25*EPST*(1.-0.5*EPSU)*(PYI3AA(BEUST,EPSU,2)+
+ & PYI3AA(BEUST,EPST,2))-0.25*EPSS*(1.-0.5*EPSU)*
+ & (PYI3AA(BEUTS,EPSU,2)+PYI3AA(BEUTS,EPSS,2))+
& 0.25*(-2.*(TH2+SH2)/UH2+4.*EPSU+EPST+EPSS+0.5*EPST*EPSS)*
- & (PYI3AU(BETUS,EPST,2)+PYI3AU(BETUS,EPSS,2))
+ & (PYI3AA(BETUS,EPST,2)+PYI3AA(BETUS,EPSS,2))
A1STUR=-1.-0.25*(EPSS+EPST+EPSU)*(PYW2AU(EPSS,1)+
& PYW2AU(EPST,1)+PYW2AU(EPSU,1))+0.25*(EPSU+0.5*EPSS*EPST)*
- & (PYI3AU(BESUT,EPSS,1)+PYI3AU(BESUT,EPST,1))+
- & 0.25*(EPST+0.5*EPSS*EPSU)*(PYI3AU(BESTU,EPSS,1)+
- & PYI3AU(BESTU,EPSU,1))+0.25*(EPSS+0.5*EPST*EPSU)*
- & (PYI3AU(BETSU,EPST,1)+PYI3AU(BETSU,EPSU,1))
+ & (PYI3AA(BESUT,EPSS,1)+PYI3AA(BESUT,EPST,1))+
+ & 0.25*(EPST+0.5*EPSS*EPSU)*(PYI3AA(BESTU,EPSS,1)+
+ & PYI3AA(BESTU,EPSU,1))+0.25*(EPSS+0.5*EPST*EPSU)*
+ & (PYI3AA(BETSU,EPST,1)+PYI3AA(BETSU,EPSU,1))
A1STUI=-0.25*(EPSS+EPST+EPSU)*(PYW2AU(EPSS,2)+PYW2AU(EPST,2)+
& PYW2AU(EPSU,2))+0.25*(EPSU+0.5*EPSS*EPST)*
- & (PYI3AU(BESUT,EPSS,2)+PYI3AU(BESUT,EPST,2))+
- & 0.25*(EPST+0.5*EPSS*EPSU)*(PYI3AU(BESTU,EPSS,2)+
- & PYI3AU(BESTU,EPSU,2))+0.25*(EPSS+0.5*EPST*EPSU)*
- & (PYI3AU(BETSU,EPST,2)+PYI3AU(BETSU,EPSU,2))
- A2STUR=-1.+0.125*EPSS*EPST*(PYI3AU(BESUT,EPSS,1)+
- & PYI3AU(BESUT,EPST,1))+0.125*EPSS*EPSU*(PYI3AU(BESTU,EPSS,1)+
- & PYI3AU(BESTU,EPSU,1))+0.125*EPST*EPSU*(PYI3AU(BETSU,EPST,1)+
- & PYI3AU(BETSU,EPSU,1))
- A2STUI=0.125*EPSS*EPST*(PYI3AU(BESUT,EPSS,2)+
- & PYI3AU(BESUT,EPST,2))+0.125*EPSS*EPSU*(PYI3AU(BESTU,EPSS,2)+
- & PYI3AU(BESTU,EPSU,2))+0.125*EPST*EPSU*(PYI3AU(BETSU,EPST,2)+
- & PYI3AU(BETSU,EPSU,2))
+ & (PYI3AA(BESUT,EPSS,2)+PYI3AA(BESUT,EPST,2))+
+ & 0.25*(EPST+0.5*EPSS*EPSU)*(PYI3AA(BESTU,EPSS,2)+
+ & PYI3AA(BESTU,EPSU,2))+0.25*(EPSS+0.5*EPST*EPSU)*
+ & (PYI3AA(BETSU,EPST,2)+PYI3AA(BETSU,EPSU,2))
+ A2STUR=-1.+0.125*EPSS*EPST*(PYI3AA(BESUT,EPSS,1)+
+ & PYI3AA(BESUT,EPST,1))+0.125*EPSS*EPSU*(PYI3AA(BESTU,EPSS,1)+
+ & PYI3AA(BESTU,EPSU,1))+0.125*EPST*EPSU*(PYI3AA(BETSU,EPST,1)+
+ & PYI3AA(BETSU,EPSU,1))
+ A2STUI=0.125*EPSS*EPST*(PYI3AA(BESUT,EPSS,2)+
+ & PYI3AA(BESUT,EPST,2))+0.125*EPSS*EPSU*(PYI3AA(BESTU,EPSS,2)+
+ & PYI3AA(BESTU,EPSU,2))+0.125*EPST*EPSU*(PYI3AA(BETSU,EPST,2)+
+ & PYI3AA(BETSU,EPSU,2))
ENDIF
ASRE=ASRE+EI**2*(A0STUR+A0TSUR+A0UTSR+4.*A1STUR+A2STUR)
ASIM=ASIM+EI**2*(A0STUI+A0TSUI+A0UTSI+4.*A1STUI+A2STUI)
IF(ISUB.EQ.141) THEN
C...f + fb -> gamma*/Z0/Z'0.
MINT(61)=2
- CALL PYWIDT(32,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(32,SQRT(SH),WDTP,WDTE)
FACZP=COMFAC*AEM**2*4./9.
DO 800 I=MINA,MAXA
IF(I.EQ.0.OR.KFAC(1,I)*KFAC(2,-I).EQ.0) GOTO 800
ELSEIF(ISUB.EQ.142) THEN
C...f + fb' -> H+/-.
- CALL PYWIDT(37,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(37,SQRT(SH),WDTP,WDTE)
FHC=COMFAC*(AEM/XW)**2*1./48.*(SH/SQMW)**2*SH2/
& ((SH-SQMHC)**2+GMMHC**2)
C'''No construction yet for leptons
ELSEIF(ISUB.EQ.143) THEN
C...f + fb -> R.
- CALL PYWIDT(40,SQRT(SH),WDTP,WDTE)
+ CALL PYWIDTA(40,SQRT(SH),WDTP,WDTE)
FACR=COMFAC*(AEM/XW)**2*1./9.*SH2/((SH-SQMR)**2+GMMR**2)
DO 860 I=MIN1,MAX1
IF(I.EQ.0.OR.KFAC(1,I).EQ.0) GOTO 860
3 -4.0990E-02, -1.0820E-01, 2.0360E+00, 5.2090E+00, -4.8400E-02/
C...Euler's beta function, requires ordinary Gamma function
-clin-10/25/02 get rid of argument usage mismatch in PYGAMM():
-c EULBT(X,Y)=PYGAMM(X)*PYGAMM(Y)/PYGAMM(X+Y)
+clin-10/25/02 get rid of argument usage mismatch in PYGAMMA():
+c EULBT(X,Y)=PYGAMMA(X)*PYGAMMA(Y)/PYGAMMA(X+Y)
vx=0.
bbr2=0.
clin-10/25/02 evaluate EULBT(TS(1),TS(2)+1.):
c XQ(KFL)=X**TS(1)*(1.-X)**TS(2)*(1.+TS(3)*X)/(EULBT(TS(1),
c & TS(2)+1.)*(1.+TS(3)*TS(1)/(TS(1)+TS(2)+1.)))
- eulbt1=PYGAMM(TS(1))*PYGAMM(TS(2)+1.)/PYGAMM(TS(1)+TS(2)+1.)
+ eulbt1=PYGAMMA(TS(1))*PYGAMMA(TS(2)+1.)/
+ & PYGAMMA(TS(1)+TS(2)+1.)
XQ(KFL)=X**TS(1)*(1.-X)**TS(2)*(1.+TS(3)*X)/(EULBT1
& *(1.+TS(3)*TS(1)/(TS(1)+TS(2)+1.)))
ELSE
& COW(3,IS,KFL,NSET)*SD**2
IF(KFL.EQ.1) THEN
-clin-10/25/02 get rid of argument usage mismatch in PYGAMM():
+clin-10/25/02 get rid of argument usage mismatch in PYGAMMA():
c XQ(KFL)=X**TS(1)*(1.-X)**TS(2)/EULBT(TS(1),TS(2)+1.)
- eulbt2=PYGAMM(TS(1))*PYGAMM(TS(2)+1.)/PYGAMM(TS(1)+TS(2)+1.)
+ eulbt2=PYGAMMA(TS(1))
+ & *PYGAMMA(TS(2)+1.)/PYGAMMA(TS(1)+TS(2)+1.)
XQ(KFL)=X**TS(1)*(1.-X)**TS(2)/EULBT2
ELSE
XQ(KFL)=TS(1)*X**TS(2)*(1.-X)**TS(3)*(1.+TS(4)*X+TS(5)*X**2)
C*********************************************************************
- SUBROUTINE PYSPLI(KF,KFLIN,KFLCH,KFLSP)
+ SUBROUTINE PYSPLIA(KF,KFLIN,KFLCH,KFLSP)
C...In case of a hadron remnant which is more complicated than just a
C...quark or a diquark, split it into two (partons or hadron + parton).
C*********************************************************************
- FUNCTION PYGAMM(X)
+ FUNCTION PYGAMMA(X)
C...Gives ordinary Gamma function Gamma(x) for positive, real arguments;
C...see M. Abramowitz, I. A. Stegun: Handbook of Mathematical Functions
NX=INT(X)
DX=X-NX
- PYGAMM=1.
+ PYGAMMA=1.
DO 100 I=1,8
- 100 PYGAMM=PYGAMM+B(I)*DX**I
+ 100 PYGAMMA=PYGAMMA+B(I)*DX**I
IF(X.LT.1.) THEN
- PYGAMM=PYGAMM/X
+ PYGAMMA=PYGAMMA/X
ELSE
DO 110 IX=1,NX-1
- 110 PYGAMM=(X-IX)*PYGAMM
+ 110 PYGAMMA=(X-IX)*PYGAMMA
ENDIF
RETURN
C***********************************************************************
- FUNCTION PYI3AU(BE,EPS,IREIM)
+ FUNCTION PYI3AA(BE,EPS,IREIM)
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,
IF(EPS.LT.1.) GA=0.5*(1.+SQRT(1.-EPS))
IF(EPS.LT.0.) THEN
- F3RE=PYSPEN((GA-1.)/(GA+BE-1.),0.,1)-PYSPEN(GA/(GA+BE-1.),0.,1)+
- & PYSPEN((BE-GA)/BE,0.,1)-PYSPEN((BE-GA)/(BE-1.),0.,1)+
+ F3RE=PYSPEA((GA-1.)/(GA+BE-1.),0.,1)-PYSPEA(GA/(GA+BE-1.),0.,1)+
+ & PYSPEA((BE-GA)/BE,0.,1)-PYSPEA((BE-GA)/(BE-1.),0.,1)+
& (LOG(BE)**2-LOG(BE-1.)**2)/2.+LOG(GA)*LOG((GA+BE-1.)/BE)+
& LOG(GA-1.)*LOG((BE-1.)/(GA+BE-1.))
F3IM=0.
ELSEIF(EPS.LT.1.) THEN
- F3RE=PYSPEN((GA-1.)/(GA+BE-1.),0.,1)-PYSPEN(GA/(GA+BE-1.),0.,1)+
- & PYSPEN(GA/(GA-BE),0.,1)-PYSPEN((GA-1.)/(GA-BE),0.,1)+
+ F3RE=PYSPEA((GA-1.)/(GA+BE-1.),0.,1)-PYSPEA(GA/(GA+BE-1.),0.,1)+
+ & PYSPEA(GA/(GA-BE),0.,1)-PYSPEA((GA-1.)/(GA-BE),0.,1)+
& LOG(GA/(1.-GA))*LOG((GA+BE-1.)/(BE-GA))
F3IM=-PARU(1)*LOG((GA+BE-1.)/(BE-GA))
ELSE
R=SQRT(RSQ)
THE=ACOS(RCTHE/R)
PHI=ACOS(RCPHI/R)
- F3RE=PYSPEN(RCTHE,RSTHE,1)+PYSPEN(RCTHE,-RSTHE,1)-
- & PYSPEN(RCPHI,RSPHI,1)-PYSPEN(RCPHI,-RSPHI,1)+
+ F3RE=PYSPEA(RCTHE,RSTHE,1)+PYSPEA(RCTHE,-RSTHE,1)-
+ & PYSPEA(RCPHI,RSPHI,1)-PYSPEA(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)
+ F3IM=PYSPEA(RCTHE,RSTHE,2)+PYSPEA(RCTHE,-RSTHE,2)-
+ & PYSPEA(RCPHI,RSPHI,2)-PYSPEA(RCPHI,-RSPHI,2)
ENDIF
- IF(IREIM.EQ.1) PYI3AU=2./(2.*BE-1.)*F3RE
- IF(IREIM.EQ.2) PYI3AU=2./(2.*BE-1.)*F3IM
+ IF(IREIM.EQ.1) PYI3AA=2./(2.*BE-1.)*F3RE
+ IF(IREIM.EQ.2) PYI3AA=2./(2.*BE-1.)*F3IM
RETURN
END
C***********************************************************************
- FUNCTION PYSPEN(XREIN,XIMIN,IREIM)
+ FUNCTION PYSPEA(XREIN,XIMIN,IREIM)
C...Calculates real and imaginary part of Spence function; see
C...G. 't Hooft and M. Veltman, Nucl. Phys. B153 (1979) 365.
& 0.000000E+00, 7.575757E-02, 0.000000E+00,
&-2.531135E-01, 0.000000E+00, 1.166667E+00/
- pyspen=0.
+ pyspea=0.
XRE=XREIN
XIM=XIMIN
IF(ABS(1.-XRE).LT.1.E-6.AND.ABS(XIM).LT.1.E-6) THEN
- IF(IREIM.EQ.1) PYSPEN=PARU(1)**2/6.
- IF(IREIM.EQ.2) PYSPEN=0.
+ IF(IREIM.EQ.1) PYSPEA=PARU(1)**2/6.
+ IF(IREIM.EQ.2) PYSPEA=0.
RETURN
ENDIF
XMOD=SQRT(XRE**2+XIM**2)
IF(XMOD.LT.1.E-6) THEN
- IF(IREIM.EQ.1) PYSPEN=0.
- IF(IREIM.EQ.2) PYSPEN=0.
+ IF(IREIM.EQ.1) PYSPEA=0.
+ IF(IREIM.EQ.2) PYSPEA=0.
RETURN
ENDIF
SPRE=SPRE+B(I)*TERMRE
100 SPIM=SPIM+B(I)*TERMIM
- IF(IREIM.EQ.1) PYSPEN=SP0RE+SGN*SPRE
- IF(IREIM.EQ.2) PYSPEN=SP0IM+SGN*SPIM
+ IF(IREIM.EQ.1) PYSPEA=SP0RE+SGN*SPRE
+ IF(IREIM.EQ.2) PYSPEA=SP0IM+SGN*SPIM
RETURN
END
C*********************************************************************
- SUBROUTINE PYKCUT(MCUT)
+ SUBROUTINE PYKCUTA(MCUT)
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
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff