C          ****COMMON BLOCK FILE FOR HERWIG VERSION 6.1****
C
C ALTERATIONS: Layout completely overhauled for 5.9
C
C
C New common blocks added for version 6.1:
C              HWCLUS,HWSUSY,HWRPAR,HWMINB
C
C New variables added for version 6.1:
C              OMHMIX,ET2MIX,PH3MIX,IOP4JT,NPRFMT,
C              PRNDEF,PRNTEX,PRNWEB,EFFMIN,GCUTME,
C              IOP4JT,NPRFMT                       see HWPRAM
C              Y4JT,DURHAM                         see HWHARD
C              QORQQB,QBORQQ                       see HWPROP
C              NRECO                               see HWUCLU
C              TXNAME                              see HWUNAM
C              PPCL,NCL,IDCL                       see HWCLUS
C              TANB,ALPHAH,COSBPA,SINBPA,COSBMA,
C              SINBMA,COSA,SINA,COSB,SINB,COTB,
C              ZMIXSS,ZMXNSS,ZSGNSS,LFCH,RFCH,
C              SLFCH,SRFCH,WMXUSS,WMXVSS,WSGNSS,
C              QMIXSS,LMIXSS,THETAT,THETAB,THETAL,
C              ATSS,ABSS,ALSS,MUSS,FACTSS,GHWWSS,
C              GHZZSS,GHDDSS,GHUUSS,GHWHSS,GHSQSS,
C              XLMNSS,RMMNSS,IMSSM,SENHNC,
C              SSPARITY,SUSYIN                     see HWSUSY
C              LAMDA1,LAMDA2,LAMDA3,HRDCOL,RPARTY,
C              COLUPD                              see HWRPAR
C              PMBN1,PMBN2,PMBN3,PMBK1,PMBK2,
C              PMBM1,PMBM2,PMBP1,PMBP2,PMBP3       see HWMINB
C
C New parameters added for version 6.1:
C              NMXCL
C
C Parameter NMXRES raised to 500
C
C Scalar variables changed to arrays of size 2:
C              CLSMR,PSPLT,CLDIR                   see HWPRAM
C
      IMPLICIT NONE
      DOUBLE PRECISION ZERO,ONE,TWO,THREE,FOUR,HALF
      PARAMETER (ZERO =0.D0, ONE =1.D0, TWO =2.D0,
     &           THREE=3.D0, FOUR=4.D0, HALF=0.5D0)
C
      DOUBLE PRECISION
     & ACCUR,AFCH,ALPFAC,ALPHEM,ANOMSC,ASFIXD,AVWGT,B1LIM,BETAF,BRFRAC,
     & BRHIG,BTCLM,CAFAC,CFFAC,CLDKWT,CLMAX,CLPOW,CLQ,CLSMR,CMMOM,COSS,
     & COSTH,CSPEED,CTHRPW,CTMAX,DECPAR,DECWT,DISF,DKLTM,EBEAM1,EBEAM2,
     & EMLST,EMMAX,EMMIN,EMPOW,EMSCA,ENHANC,ENSOF,EPOLN,ETAMIX,EVWGT,
     & EXAG,F0MIX,F1MIX,F2MIX,GAMH,GAMMAX,GAMW,GAMWT,GAMZ,GAMZP,GCOEF,
     & GEV2NB,GEV2MM,GPOLN,H1MIX,HBAR,HARDST,OMEGA0,PBEAM1,PBEAM2,PDIQK,
     & PGSMX,PGSPL,PHEP,PHIMIX,PHIPAR,PHOMAS,PIFAC,PLTCUT,PPAR,PPOLN,
     & PRECO,PRSOF,PSPLT,PTINT,PTMAX,PTMIN,PTPOW,PTRMS,PXRMS,PWT,Q2MAX,
     & Q2MIN,Q2POW,Q2WWMN,Q2WWMX,QCDL3,QCDL5,QCDLAM,QDIQK,QEV,QFCH,QG,
     & QLIM,QSPAC,QV,QWT,REPWT,RESN,RHOHEP,RHOPAR,RLTIM,RMASS,RMIN,
     & RSPIN,SCABI,SINS,SNGWT,SWEIN,SWTEF,SUD,THMAX,TLOUT,TMTOP,TMNISR,
     & TQWT,VCKM,VFCH,VGCUT,VHEP,VMIN2,VPAR,VPCUT,VQCUT,VTXPIP,VTXQDK,
     & WBIGST,WGTMAX,WGTSUM,WHMIN,WSQSUM,XFACT,XLMIN,XMIX,XMRCT,XX,
     & XXMIN,YBMAX,YBMIN,YJMAX,YJMIN,YMIX,YMRCT,YWWMAX,YWWMIN,ZBINM,
     & ZJMAX,ZMXISR,Y4JT,EFFMIN,PPCL,
     & TANB,ALPHAH,COSBPA,SINBPA,COSBMA,SINBMA,COSA,SINA,COSB,SINB,COTB,
     & ZMIXSS,ZMXNSS,ZSGNSS,LFCH,RFCH,SLFCH,SRFCH, WMXUSS,WMXVSS,WSGNSS,
     & QMIXSS,LMIXSS,THETAT,THETAB,THETAL,ATSS,ABSS,ALSS,MUSS,FACTSS,
     & GHWWSS,GHZZSS,GHDDSS,GHUUSS,GHWHSS,GHSQSS,
     & XLMNSS,RMMNSS,IMSSM,SENHNC,SSPARITY,LAMDA1,LAMDA2,LAMDA3,
     & PMBN1,PMBN2,PMBN3,PMBK1,PMBK2,PMBM1,PMBM2,PMBP1,PMBP2,PMBP3,
     & OMHMIX,ET2MIX,PH3MIX,GCUTME
C
      INTEGER
     & CLDIR,IAPHIG,IBRN,IBSH,ICHRG,ICO,IDCMF,IDHEP,IDHW,IDK,IDKPRD,IDN,
     & IDPAR,IDPDG,IERROR,IFLAV,IFLMAX,IFLMIN,IHPRO,IMQDK,INHAD,INTER,
     & IOPDKL,IOPHIG,IOPREM,IPART1,IPART2,IPRINT,IPRO,IPROC,ISLENT,
     & ISPAC,ISTAT,ISTHEP,ISTPAR,JCOPAR,JDAHEP,JDAPAR,JMOHEP,JMOPAR,
     & JNHAD,LNEXT,LOCN,LOCQ,LRSUD,LSTRT,LWEVT,LWSUD,MAPQ,MAXER,MAXEV,
     & MAXFL,MAXPR,MODBOS,MODMAX,MODPDF,NBTRY,NCLDK,NCOLO,NCTRY,NDKYS,
     & NDTRY,NETRY,NEVHEP,NEVPAR,NFLAV,NGSPL,NHEP,NME,NMODES,NMXCDK,
     & NMXDKS,NMXHEP,NMXJET,NMXMOD,NMXPAR,NMXQDK,NMXRES,NMXSUD,NPAR,
     & NPRODS,NQDK,NQEV,NRES,NRN,NSPAC,NSTRU,NSTRY,NSUD,NUMER,NUMERU,
     & NWGTS,NZBIN,SUDORD,IOP4JT,HRDCOL,NMXCL,NCL,IDCL,NPRFMT,NRECO
C
      LOGICAL
     & AZSOFT,AZSPIN,BGSHAT,BREIT,CLRECO,COLISR,DKPSET,FROST,FSTEVT,
     & FSTWGT,GENEV,GENSOF,HARDME,HVFCEN,MAXDKL,MIXING,NOSPAC,NOWGT,
     & PRNDEC,PIPSMR,PRVTX,RSTAB,SOFTME,TMPAR,TPOL,USECMF,VTOCDK,VTORDK,
     & ZPRIME,RPARTY,COLUPD,PRNDEF,PRNTEX,PRNWEB,DURHAM,SUSYIN,
     & QORQQB,QBORQQ
C
      CHARACTER*4
     & BDECAY
      CHARACTER*8
     & PART1,PART2,RNAME
      CHARACTER*20
     & AUTPDF
      CHARACTER*37
     & TXNAME
C
C New standard event common
      PARAMETER (NMXHEP=2000)
      COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHEP),IDHEP(NMXHEP),
     & JMOHEP(2,NMXHEP),JDAHEP(2,NMXHEP),PHEP(5,NMXHEP),VHEP(4,NMXHEP)
C
C Beams, process and number of events
      COMMON/HWBEAM/IPART1,IPART2
      COMMON/HWBMCH/PART1,PART2
      COMMON/HWPROC/EBEAM1,EBEAM2,PBEAM1,PBEAM2,IPROC,MAXEV
C
C Basic parameters (and quantities derived from them)
      COMMON/HWPRAM/AFCH(16,2),ALPHEM,B1LIM,BETAF,BTCLM,CAFAC,CFFAC,
     & CLMAX,CLPOW,CLSMR(2),CSPEED,ENSOF,ETAMIX,F0MIX,F1MIX,F2MIX,GAMH,
     & GAMW,GAMZ,GAMZP,GEV2NB,H1MIX,PDIQK,PGSMX,PGSPL(4),PHIMIX,PIFAC,
     & PRSOF,PSPLT(2),PTRMS,PXRMS,QCDL3,QCDL5,QCDLAM,QDIQK,QFCH(16),QG,
     & QSPAC,QV,SCABI,SWEIN,TMTOP,VFCH(16,2),VCKM(3,3),VGCUT,VQCUT,
     & VPCUT,ZBINM,EFFMIN,OMHMIX,ET2MIX,PH3MIX,GCUTME,
     & IOPREM,IPRINT,ISPAC,LRSUD,LWSUD,MODPDF(2),NBTRY,NCOLO,NCTRY,
     & NDTRY,NETRY,NFLAV,NGSPL,NSTRU,NSTRY,NZBIN,IOP4JT(2),NPRFMT,
     & AZSOFT,AZSPIN,CLDIR(2),HARDME,NOSPAC,PRNDEC,PRVTX,SOFTME,ZPRIME,
     & PRNDEF,PRNTEX,PRNWEB
C
      COMMON/HWPRCH/AUTPDF(2),BDECAY
C
C Parton shower common (same format as /HEPEVT/)
      PARAMETER (NMXPAR=500)
      COMMON/HWPART/NEVPAR,NPAR,ISTPAR(NMXPAR),IDPAR(NMXPAR),
     & JMOPAR(2,NMXPAR),JDAPAR(2,NMXPAR),PPAR(5,NMXPAR),VPAR(4,NMXPAR)
C
C Parton polarization common
      COMMON/HWPARP/DECPAR(2,NMXPAR),PHIPAR(2,NMXPAR),RHOPAR(2,NMXPAR),
     & TMPAR(NMXPAR)
C
C Electroweak boson common
      PARAMETER (MODMAX=5)
      COMMON/HWBOSC/ALPFAC,BRHIG(12),ENHANC(12),GAMMAX,RHOHEP(3,NMXHEP),
     & IOPHIG,MODBOS(MODMAX)
C
C Parton colour common
      COMMON/HWPARC/JCOPAR(4,NMXPAR)
C
C other HERWIG branching, event and hard subprocess common blocks
      COMMON/HWBRCH/ANOMSC(2,2),HARDST,PTINT(3,2),XFACT,INHAD,JNHAD,
     & NSPAC(7),ISLENT,BREIT,FROST,USECMF
C
      COMMON/HWEVNT/AVWGT,EVWGT,GAMWT,TLOUT,WBIGST,WGTMAX,WGTSUM,WSQSUM,
     & IDHW(NMXHEP),IERROR,ISTAT,LWEVT,MAXER,MAXPR,NOWGT,NRN(2),NUMER,
     & NUMERU,NWGTS,GENSOF
C
      COMMON/HWHARD/ASFIXD,CLQ(7,6),COSS,COSTH,CTMAX,DISF(13,2),EMLST,
     & EMMAX,EMMIN,EMPOW,EMSCA,EPOLN(3),GCOEF(7),GPOLN,OMEGA0,PHOMAS,
     & PPOLN(3),PTMAX,PTMIN,PTPOW,Q2MAX,Q2MIN,Q2POW,Q2WWMN,Q2WWMX,QLIM,
     & SINS,THMAX,Y4JT,TMNISR,TQWT,XX(2),XLMIN,XXMIN,YBMAX,YBMIN,YJMAX,
     & YJMIN,YWWMAX,YWWMIN,WHMIN,ZJMAX,ZMXISR,IAPHIG,IBRN(2),IBSH,
     & ICO(10),IDCMF,IDN(10),IFLMAX,IFLMIN,IHPRO,IPRO,MAPQ(6),MAXFL,
     & BGSHAT,COLISR,FSTEVT,FSTWGT,GENEV,HVFCEN,TPOL,DURHAM
C
C Arrays for particle properties (NMXRES = max no of particles defined)
      PARAMETER(NMXRES=500)
      COMMON/HWPROP/RLTIM(0:NMXRES),RMASS(0:NMXRES),RSPIN(0:NMXRES),
     & ICHRG(0:NMXRES),IDPDG(0:NMXRES),IFLAV(0:NMXRES),NRES,
     & VTOCDK(0:NMXRES),VTORDK(0:NMXRES),
     & QORQQB(0:NMXRES),QBORQQ(0:NMXRES)
C
      COMMON/HWUNAM/RNAME(0:NMXRES),TXNAME(2,0:NMXRES)
C
C Arrays for particle decays (NMXDKS = max total no of decays,
C                             NMXMOD = max no of modes for a particle)
      PARAMETER(NMXDKS=4000,NMXMOD=200)
      COMMON/HWUPDT/BRFRAC(NMXDKS),CMMOM(NMXDKS),DKLTM(NMXRES),
     & IDK(NMXDKS),IDKPRD(5,NMXDKS),LNEXT(NMXDKS),LSTRT(NMXRES),NDKYS,
     & NME(NMXDKS),NMODES(NMXRES),NPRODS(NMXDKS),DKPSET,RSTAB(0:NMXRES)
C
C Weights used in cluster decays
      COMMON/HWUWTS/REPWT(0:3,0:4,0:4),SNGWT,DECWT,QWT(3),PWT(12),
     & SWTEF(NMXRES)
C
C Parameters for cluster decays (NMXCDK = max total no of cluster
C                                         decay channels)
      PARAMETER(NMXCDK=4000)
      COMMON/HWUCLU/CLDKWT(NMXCDK),CTHRPW(12,12),PRECO,RESN(12,12),
     & RMIN(12,12),LOCN(12,12),NCLDK(NMXCDK),NRECO,CLRECO
C
C Variables controling mixing and vertex information
      COMMON/HWDIST/EXAG,GEV2MM,HBAR,PLTCUT,VMIN2,VTXPIP(4),XMIX(2),
     & XMRCT(2),YMIX(2),YMRCT(2),IOPDKL,MAXDKL,MIXING,PIPSMR
C
C Arrays for temporarily storing heavy-b,c-hadrons decaying partonicaly
C (NMXQDK = max no such decays in an event)
      PARAMETER (NMXQDK=20)
      COMMON/HWQDKS/VTXQDK(4,NMXQDK),IMQDK(NMXQDK),LOCQ(NMXQDK),NQDK
C
C Parameters for Sudakov form factors
C (NMXSUD= max no of entries in lookup table)
      PARAMETER (NMXSUD=1024)
      COMMON/HWUSUD/ACCUR,QEV(NMXSUD,6),SUD(NMXSUD,6),INTER,NQEV,NSUD,
     & SUDORD
C
      PARAMETER (NMXJET=200)
C
C SUSY parameters
      COMMON/HWSUSY/
     & TANB,ALPHAH,COSBPA,SINBPA,COSBMA,SINBMA,COSA,SINA,COSB,SINB,COTB,
     & ZMIXSS(4,4),ZMXNSS(4,4),ZSGNSS(4), LFCH(16),RFCH(16),
     & SLFCH(16,4),SRFCH(16,4), WMXUSS(2,2),WMXVSS(2,2), WSGNSS(2),
     & QMIXSS(6,2,2),LMIXSS(6,2,2),
     & THETAT,THETAB,THETAL,ATSS,ABSS,ALSS,MUSS,FACTSS,
     & GHWWSS(3),GHZZSS(3),GHDDSS(4),GHUUSS(4),GHWHSS(3),
     & GHSQSS(4,6,2,2),XLMNSS,RMMNSS,IMSSM,SENHNC(24),SSPARITY,SUSYIN
C
C R-Parity violating parameters and colours
      COMMON /HWRPAR/ LAMDA1(3,3,3),LAMDA2(3,3,3),
     &                LAMDA3(3,3,3),HRDCOL(2,5),RPARTY,COLUPD
C
C Parameters for minimum bias/soft underlying event
      COMMON/HWMINB/
     & PMBN1,PMBN2,PMBN3,PMBK1,PMBK2,PMBM1,PMBM2,PMBP1,PMBP2,PMBP3
C
C Cluster common used by soft event routines
      PARAMETER (NMXCL=500)
      COMMON/HWCLUS/PPCL(5,NMXCL),IDCL(NMXCL),NCL