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jewel-2.2.0.f
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C+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
C++ Copyright (C) 2017 Korinna C. Zapp [Korinna.Zapp@cern.ch] ++
C++ ++
C++ This file is part of JEWEL 2.2.0 ++
C++ ++
C++ The JEWEL homepage is jewel.hepforge.org ++
C++ ++
C++ The medium model was partly implemented by Jochen Klein. ++
C++ Raghav Kunnawalkam Elayavalli helped with the implementation ++
C++ of the V+jet processes. ++
C++ ++
C++ Please follow the MCnet GUIDELINES and cite Eur.Phys.J. C74 ++
C++ (2014) no.2, 2762 [arXiv:1311.0048] for the code and ++
C++ JHEP 1303 (2013) 080 [arXiv:1212.1599] and ++
C++ optionally EPJC 60 (2009) 617 [arXiv:0804.3568] for the ++
C++ physics. The reference for V+jet processes is EPJC 76 (2016) ++
C++ no.12 695 [arXiv:1608.03099] and for recoil effects it is ++
C++ arXiv:1707.01539.
C++ ++
C++ JEWEL relies heavily on PYTHIA 6 for the event generation. The ++
C++ modified version of PYTHIA 6.4.25 that is distributed with ++
C++ JEWEL is, however, not an official PYTHIA release and must not ++
C++ be used for anything else. Please refer to results as ++
C++ "JEWEL+PYTHIA". ++
C++ ++
C++ JEWEL also uses code provided by S. Zhang and J. M. Jing ++
C++ (Computation of Special Functions, John Wiley & Sons, New York, ++
C++ 1996 and http://jin.ece.illinois.edu) for computing the ++
C++ exponential integral Ei(x). ++
C++ ++
C++ ++
C++ JEWEL is free software; you can redistribute it and/or ++
C++ modify it under the terms of the GNU General Public License ++
C++ as published by the Free Software Foundation; either version 2 ++
C++ of the License, or (at your option) any later version. ++
C++ ++
C++ JEWEL is distributed in the hope that it will be useful, ++
C++ but WITHOUT ANY WARRANTY; without even the implied warranty of ++
C++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++
C++ GNU General Public License for more details. ++
C++ ++
C++ You should have received a copy of the GNU General Public ++
C++ License along with this program; if not, write to the Free ++
C++ Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, ++
C++ MA 02110-1301 USA ++
C++ ++
C++ Linking JEWEL statically or dynamically with other modules is ++
C++ making a combined work based on JEWEL. Thus, the terms and ++
C++ conditions of the GNU General Public License cover the whole ++
C++ combination. ++
C++ ++
C++ In addition, as a special exception, I give you permission to ++
C++ combine JEWEL with the code for the computation of special ++
C++ functions provided by S. Zhang and J. M. Jing. You may copy and ++
C++ distribute such a system following the terms of the GNU GPL for ++
C++ JEWEL and the licenses of the other code concerned, provided ++
C++ that you include the source code of that other code when and as ++
C++ the GNU GPL requires distribution of source code. ++
C+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
PROGRAM JEWEL
IMPLICIT NONE
C--Common block of Pythia
COMMON/PYJETS/N,NPAD,K(23000,5),P(23000,5),V(23000,5)
INTEGER N,NPAD,K
DOUBLE PRECISION P,V
COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
INTEGER MSTU,MSTJ
DOUBLE PRECISION PARU,PARJ
COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
INTEGER MDCY,MDME,KFDP
DOUBLE PRECISION BRAT
COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
INTEGER MSEL,MSELPD,MSUB,KFIN
DOUBLE PRECISION CKIN
COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
INTEGER MSTP,MSTI
DOUBLE PRECISION PARP,PARI
COMMON/PYDATR/MRPY(6),RRPY(100)
INTEGER MRPY
DOUBLE PRECISION RRPY
C--identifier of file for hepmc output and logfile
common/hepmcid/hpmcfid,logfid
integer hpmcfid,logfid
C--use nuclear pdf?
COMMON/NPDF/MASS,NSET,EPS09,INITSTR
INTEGER NSET
DOUBLE PRECISION MASS
LOGICAL EPS09
CHARACTER*10 INITSTR
C--number of protons
common/np/nproton
integer nproton
C--organisation of event record
common/evrecord/nsim,npart,offset,hadrotype,sqrts,collider,hadro,
&shorthepmc,channel,isochannel
integer nsim,npart,offset,hadrotype
double precision sqrts
character*4 collider,channel
character*2 isochannel
logical hadro,shorthepmc
C--discard event flag
COMMON/DISC/NDISC,NSTRANGE,NGOOD,errcount,wdisc,DISCARD
LOGICAL DISCARD
INTEGER NDISC,NSTRANGE,NGOOD,errcount
double precision wdisc
C--event weight
COMMON/WEIGHT/EVWEIGHT,sumofweights
double precision EVWEIGHT,sumofweights
C--number of scattering events
COMMON/CHECK/NSCAT,NSCATEFF,NSPLIT
DOUBLE PRECISION NSCAT,NSCATEFF,NSPLIT
C--number of extrapolations in tables
common/extrapolations/ntotspliti,noverspliti,ntotpdf,noverpdf,
&ntotxsec,noverxsec,ntotsuda,noversuda
integer ntotspliti,noverspliti,ntotpdf,noverpdf,
&ntotxsec,noverxsec,ntotsuda,noversuda
C--local variables
integer j,i,kk,poissonian
integer nsimpp,nsimpn,nsimnp,nsimnn,nsimsum,nsimchn
double precision sumofweightstot,wdisctot,scalefac
double precision gettemp,r,tau
character*2 b1,b2
call init()
SUMOFWEIGHTSTOT=0.d0
WDISCTOT=0.d0
C--e+ + e- event generation
if (collider.eq.'EEJJ') then
b1 = 'e+'
b2 = 'e-'
write(logfid,*)
write(logfid,*)
&'####################################################'
write(logfid,*)
write(logfid,*)'generating ',nsim,' events in ',b1,' + ',b2,
&' channel'
write(logfid,*)
write(logfid,*)
&'####################################################'
write(logfid,*)
SUMOFWEIGHTS=0.d0
WDISC=0.d0
call initpythia(b1,b2)
write(logfid,*)
C--e+ + e- event loop
DO 100 J=1,NSIM
call genevent(j,b1,b2)
100 CONTINUE
sumofweightstot = sumofweightstot+sumofweights
wdisctot = wdisctot + wdisc
write(logfid,*)
write(logfid,*)'cross section in e+ + e- channel:',PARI(1),'mb'
write(logfid,*)'sum of event weights in e+ + e- channel:',
& sumofweights-wdisc
write(logfid,*)
else
C--hadronic event generation
if (isochannel.eq.'PP') then
nsimpp = nsim
nsimpn = 0
nsimnp = 0
nsimnn = 0
elseif (isochannel.eq.'PN') then
nsimpp = 0
nsimpn = nsim
nsimnp = 0
nsimnn = 0
elseif (isochannel.eq.'NP') then
nsimpp = 0
nsimpn = 0
nsimnp = nsim
nsimnn = 0
elseif (isochannel.eq.'NN') then
nsimpp = 0
nsimpn = 0
nsimnp = 0
nsimnn = nsim
else
nsimpp = poissonian(nsim*nproton**2/mass**2)
nsimpn = poissonian(nsim*nproton*(mass-nproton*1.d0)/mass**2)
nsimnp = poissonian(nsim*nproton*(mass-nproton*1.d0)/mass**2)
nsimnn = poissonian(nsim*(mass-nproton*1.d0)**2/mass**2)
nsimsum = nsimpp + nsimpn + nsimnp + nsimnn
scalefac = nsim*1.d0/(nsimsum*1.d0)
nsimpp = int(nsimpp*scalefac)
nsimpn = int(nsimpn*scalefac)
nsimnp = int(nsimnp*scalefac)
nsimnn = int(nsimnn*scalefac)
nsimsum = nsimpp + nsimpn + nsimnp + nsimnn
endif
C--loop over channels
do 101 kk=1,4
if (kk.eq.1) then
b1 = 'p+'
b2 = 'p+'
nsimchn = nsimpp
elseif (kk.eq.2) then
b1 = 'p+'
b2 = 'n0'
nsimchn = nsimpn
elseif (kk.eq.3) then
b1 = 'n0'
b2 = 'p+'
nsimchn = nsimnp
else
b1 = 'n0'
b2 = 'n0'
nsimchn = nsimnn
endif
write(logfid,*)
write(logfid,*)
&'####################################################'
write(logfid,*)
write(logfid,*)'generating ',nsimchn,' events in ',
&b1,' + ',b2,' channel'
write(logfid,*)
write(logfid,*)
&'####################################################'
write(logfid,*)
SUMOFWEIGHTS=0.d0
WDISC=0.d0
call initpythia(b1,b2)
write(logfid,*)
C--event loop
DO 102 J=1,nsimchn
call genevent(j,b1,b2)
102 CONTINUE
sumofweightstot = sumofweightstot+sumofweights
wdisctot = wdisctot + wdisc
write(logfid,*)
write(logfid,*)'cross section in ',b1,' + ',b2,' channel:',
& PARI(1),'mb'
write(logfid,*)'sum of event weights in ',b1,' + ',b2,
& ' channel:',sumofweights-wdisc
write(logfid,*)
101 continue
endif
C--finish
WRITE(HPMCFID,'(A)')'HepMC::IO_GenEvent-END_EVENT_LISTING'
WRITE(HPMCFID,*)
CLOSE(HPMCFID,status='keep')
write(logfid,*)
write(logfid,*)'mean number of scatterings:',
& NSCAT/(SUMOFWEIGHTSTOT-WDISCTOT)
write(logfid,*)'mean number of effective scatterings:',
& NSCATEFF/(SUMOFWEIGHTSTOT-WDISCTOT)
write(logfid,*)'mean number of splittings:',
& NSPLIT/(SUMOFWEIGHTSTOT-WDISCTOT)
write(logfid,*)
write(logfid,*)'number of extrapolations in splitting integral: ',
& noverspliti,' (',(noverspliti*1.d0)/(ntotspliti*1.d0),'%)'
write(logfid,*)
& 'number of extrapolations in splitting partonic PDFs: ',
& noverpdf,' (',(noverpdf*1.d0)/(ntotpdf*1.d0),'%)'
write(logfid,*)
& 'number of extrapolations in splitting cross sections: ',
& noverxsec,' (',(noverxsec*1.d0)/(ntotxsec*1.d0),'%)'
write(logfid,*)
& 'number of extrapolations in Sudakov form factor: ',
& noversuda,' (',(noversuda*1.d0)/(ntotsuda*1.d0),'%)'
write(logfid,*)
write(logfid,*)'number of good events: ',ngood
write(logfid,*)'total number of discarded events: ',NDISC
write(logfid,*)'number of events for which conversion '//
&'to hepmc failed: ',NSTRANGE
call printtime
close(logfid,status='keep')
END
***********************************************************************
***********************************************************************
*** END OF MAIN PROGRAM - NOW COME THE SUBROUTINES ****************
***********************************************************************
***********************************************************************
***********************************************************************
*** subroutine init
***********************************************************************
subroutine init()
implicit none
INTEGER PYCOMP
INTEGER NMXHEP
C--Common block of Pythia
COMMON/PYJETS/N,NPAD,K(23000,5),P(23000,5),V(23000,5)
INTEGER N,NPAD,K
DOUBLE PRECISION P,V
COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
INTEGER MSTU,MSTJ
DOUBLE PRECISION PARU,PARJ
COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
INTEGER MDCY,MDME,KFDP
DOUBLE PRECISION BRAT
COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
INTEGER MSEL,MSELPD,MSUB,KFIN
DOUBLE PRECISION CKIN
COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
INTEGER MSTP,MSTI
DOUBLE PRECISION PARP,PARI
COMMON/PYDATR/MRPY(6),RRPY(100)
INTEGER MRPY
DOUBLE PRECISION RRPY
C--use nuclear pdf?
COMMON/NPDF/MASS,NSET,EPS09,INITSTR
INTEGER NSET
DOUBLE PRECISION MASS
LOGICAL EPS09
CHARACTER*10 INITSTR
C--pdfset
common/pdf/pdfset
integer pdfset
C--number of protons
common/np/nproton
integer nproton
C--Parameter common block
COMMON/PARAM/Q0,LPS,LQCD,LTIME,SCALEFACM,ANGORD,SCATRECOIL,
&ALLHAD,compress,NF
INTEGER NF
DOUBLE PRECISION Q0,LQCD,LTIME,LPS,SCALEFACM
LOGICAL ANGORD,SCATRECOIL,ALLHAD,compress
C--splitting integral
COMMON/SPLITINT/SPLITIGGV(1000,1000),SPLITIQQV(1000,1000),
&SPLITIQGV(1000,1000),QVAL(1000),ZMVAL(1000),QMAX,ZMMIN,NPOINT
INTEGER NPOINT
DOUBLE PRECISION SPLITIGGV,SPLITIQQV,SPLITIQGV,
&QVAL,ZMVAL,QMAX,ZMMIN
C--pdf common block
COMMON/PDFS/QINQX(2,1000),GINQX(2,1000),QINGX(2,1000),
&GINGX(2,1000)
DOUBLE PRECISION QINQX,GINQX,QINGX,GINGX
C--cross secttion common block
COMMON/XSECS/INTQ1(1001,101),INTQ2(1001,101),
&INTG1(1001,101),INTG2(1001,101)
DOUBLE PRECISION INTQ1,INTQ2,INTG1,INTG2
C--Sudakov common block
COMMON/INSUDA/SUDAQQ(1000,2),SUDAQG(1000,2),SUDAGG(1000,2)
&,SUDAGC(1000,2)
DOUBLE PRECISION SUDAQQ,SUDAQG,SUDAGG,SUDAGC
C--exponential integral for negative arguments
COMMON/EXPINT/EIX(3,1000),VALMAX,NVAL
INTEGER NVAL
DOUBLE PRECISION EIX,VALMAX
C--discard event flag
COMMON/DISC/NDISC,NSTRANGE,NGOOD,errcount,wdisc,DISCARD
LOGICAL DISCARD
INTEGER NDISC,NSTRANGE,NGOOD,errcount
double precision wdisc
C--factor in front of formation times
COMMON/FTIMEFAC/FTFAC
DOUBLE PRECISION FTFAC
C--factor in front of alphas argument
COMMON/ALPHASFAC/PTFAC
DOUBLE PRECISION PTFAC
C--number of scattering events
COMMON/CHECK/NSCAT,NSCATEFF,NSPLIT
DOUBLE PRECISION NSCAT,NSCATEFF,NSPLIT
C--number of extrapolations in tables
common/extrapolations/ntotspliti,noverspliti,ntotpdf,noverpdf,
&ntotxsec,noverxsec,ntotsuda,noversuda
integer ntotspliti,noverspliti,ntotpdf,noverpdf,
&ntotxsec,noverxsec,ntotsuda,noversuda
C--event weight
COMMON/WEIGHT/EVWEIGHT,sumofweights
double precision EVWEIGHT,sumofweights
C--event weight exponent
COMMON/WEXPO/WEIGHTEX
DOUBLE PRECISION WEIGHTEX
C--identifier of file for hepmc output and logfile
common/hepmcid/hpmcfid,logfid
integer hpmcfid,logfid
C--max rapidity
common/rapmax/etamax
double precision etamax
C--memory for error message from getdeltat
common/errline/errl
integer errl
C--organisation of event record
common/evrecord/nsim,npart,offset,hadrotype,sqrts,collider,hadro,
&shorthepmc,channel,isochannel
integer nsim,npart,offset,hadrotype
double precision sqrts
character*4 collider,channel
character*2 isochannel
logical hadro,shorthepmc
C--extra storage for scattering centres before interactions
common/storescatcen/nscatcen,maxnscatcen,scatflav(10000),
&scatcen(10000,5),writescatcen,writedummies
integer nscatcen,maxnscatcen,scatflav
double precision scatcen
logical writescatcen,writedummies
C--Pythia parameters
common/pythiaparams/PTMIN,PTMAX,weighted
double precision PTMIN,PTMAX
LOGICAL WEIGHTED
C--Variables local to this program
INTEGER NJOB,ios,pos,i,j,jj,intmass
DOUBLE PRECISION GETLTIMEMAX,EOVEST,r,pyr
character firstchar
CHARACTER*2 SNSET
CHARACTER*80 PDFFILE,XSECFILE,FILEMED,FILESPLIT,buffer,
&label,value
CHARACTER*100 HEPMCFILE,LOGFILE,FILENAME2
CHARACTER(LEN=100) filename
LOGICAL PDFEXIST,SPLITIEXIST,XSECEXIST
data maxnscatcen/10000/
HPMCFID = 4
logfid = 3
C--default settings
nsim = 10000
njob = 0
logfile = 'out.log'
hepmcfile = 'out.hepmc'
filesplit = 'splitint.dat'
pdffile = 'pdfs.dat'
xsecfile = 'xsecs.dat'
filemed = 'medium-params.dat'
nf = 3
lqcd = 0.4
q0 = 1.5
ptmin = 5.
ptmax = 350.
etamax = 3.1
collider = 'PPJJ'
isochannel = 'XX'
channel = 'MUON'
sqrts = 2760
pdfset = 10042
nset = 1
mass = 208.
nproton = 82
weighted = .true.
weightex = 5.
angord = .true.
allhad = .false.
hadro = .true.
hadrotype = 0
shorthepmc = .true.
compress = .true.
writescatcen = .false.
writedummies = .false.
lps = lqcd
scatrecoil = .false.
if (.not.hadro) shorthepmc = .true.
SCALEFACM=1.
ptfac=1.
ftfac=1.d0
if (iargc().eq.0) then
write(*,*)'No parameter file given, '//
&'will run with default settings.'
else
call getarg(1,filename)
write(*,*)'Reading parameters from ',filename
open(unit=1,file=filename,status='old',err=110)
do 120 i=1,1000
read(1, '(A)', iostat=ios) buffer
if(ios.ne.0) goto 130
firstchar = buffer(1:1)
if (firstchar.eq.'#') goto 120
pos=scan(buffer,' ')
label=buffer(1:pos)
value=buffer(pos+1:)
if(label.eq."NEVENT")then
read(value,*,iostat=ios) nsim
elseif(label.eq."NJOB")then
read(value,*,iostat=ios) njob
elseif(label.eq."LOGFILE")then
read(value,'(a)',iostat=ios) logfile
elseif(label.eq."HEPMCFILE")then
read(value,'(a)',iostat=ios) hepmcfile
elseif(label.eq."SPLITINTFILE")then
read(value,'(a)',iostat=ios) filesplit
elseif(label.eq."PDFFILE")then
read(value,'(a)',iostat=ios) pdffile
elseif(label.eq."XSECFILE")then
read(value,'(a)',iostat=ios) xsecfile
elseif(label.eq."MEDIUMPARAMS")then
read(value,'(a)',iostat=ios) filemed
elseif(label.eq."NF")then
read(value,*,iostat=ios) nf
elseif(label.eq."LAMBDAQCD")then
read(value,*,iostat=ios) lqcd
elseif(label.eq."Q0")then
read(value,*,iostat=ios) q0
elseif(label.eq."PTMIN")then
read(value,*,iostat=ios) ptmin
elseif(label.eq."PTMAX")then
read(value,*,iostat=ios) ptmax
elseif(label.eq."ETAMAX")then
read(value,*,iostat=ios) etamax
elseif(label.eq."PROCESS")then
read(value,*,iostat=ios) collider
elseif(label.eq."ISOCHANNEL")then
read(value,*,iostat=ios) isochannel
elseif(label.eq."CHANNEL")then
read(value,*,iostat=ios) channel
elseif(label.eq."SQRTS")then
read(value,*,iostat=ios) sqrts
elseif(label.eq."PDFSET")then
read(value,*,iostat=ios) pdfset
elseif(label.eq."NSET")then
read(value,*,iostat=ios) nset
elseif(label.eq."MASS")then
read(value,*,iostat=ios) mass
elseif(label.eq."NPROTON")then
read(value,*,iostat=ios) nproton
elseif(label.eq."WEIGHTED")then
read(value,*,iostat=ios) weighted
elseif(label.eq."WEXPO")then
read(value,*,iostat=ios) weightex
elseif(label.eq."ANGORD")then
read(value,*,iostat=ios) angord
elseif(label.eq."KEEPRECOILS")then
read(value,*,iostat=ios) allhad
elseif(label.eq."HADRO")then
read(value,*,iostat=ios) hadro
elseif(label.eq."HADROTYPE")then
read(value,*,iostat=ios) hadrotype
elseif(label.eq."SHORTHEPMC")then
read(value,*,iostat=ios) shorthepmc
elseif(label.eq."COMPRESS")then
read(value,*,iostat=ios) compress
elseif(label.eq."WRITESCATCEN")then
read(value,*,iostat=ios) writescatcen
elseif(label.eq."WRITEDUMMIES")then
read(value,*,iostat=ios) writedummies
else
write(*,*)'unknown label ',label
endif
120 continue
110 write(*,*)
& 'Unable to open parameter file, will exit the run.'
call exit(1)
130 close(1,status='keep')
write(*,*)'...done'
endif
if (ptmin.lt.3.d0) ptmin = 3.d0
if (.not.writescatcen) writedummies = .false.
OPEN(unit=logfid,file=LOGFILE,status='unknown')
MSTU(11)=logfid
call printtime
call printlogo(logfid)
write(logfid,*)
write(logfid,*)'parameters of the run:'
write(logfid,*)'NEVENT = ',nsim
write(logfid,*)'NJOB = ',njob
write(logfid,*)'LOGFILE = ',logfile
write(logfid,*)'HEPMCFILE = ',hepmcfile
write(logfid,*)'SPLITINTFILE = ',filesplit
write(logfid,*)'PDFFILE = ',pdffile
write(logfid,*)'XSECFILE = ',xsecfile
write(logfid,*)'MEDIUMPARAMS = ',filemed
write(logfid,*)'NF = ',nf
write(logfid,*)'LAMBDAQCD = ',lqcd
write(logfid,*)'Q0 = ',q0
write(logfid,*)'PTMIN = ',ptmin
write(logfid,*)'PTMAX = ',ptmax
write(logfid,*)'ETAMAX = ',etamax
write(logfid,*)'PROCESS = ',collider
write(logfid,*)'ISOCHANNEL = ',isochannel
write(logfid,*)'CHANNEL = ',channel
write(logfid,*)'SQRTS = ',sqrts
write(logfid,*)'PDFSET = ',pdfset
write(logfid,*)'NSET = ',nset
write(logfid,*)'MASS = ',mass
write(logfid,*)'NPROTON = ',nproton
write(logfid,*)'WEIGHTED = ',weighted
write(logfid,*)'WEXPO = ',weightex
write(logfid,*)'ANGORD = ',angord
write(logfid,*)'KEEPRECOILS = ',allhad
write(logfid,*)'HADRO = ',hadro
write(logfid,*)'HADROTYPE = ',hadrotype
write(logfid,*)'SHORTHEPMC = ',shorthepmc
write(logfid,*)'COMPRESS = ',compress
write(logfid,*)'WRITESCATCEN = ',writescatcen
write(logfid,*)'WRITEDUMMIES = ',writedummies
write(logfid,*)
call flush(logfid)
if ((collider.ne.'PPJJ').and.(collider.ne.'EEJJ')
& .and.(collider.ne.'PPYJ').and.(collider.ne.'PPYQ')
& .and.(collider.ne.'PPYG')
& .and.(collider.ne.'PPZJ').and.(collider.ne.'PPZQ')
& .and.(collider.ne.'PPZG').and.(collider.ne.'PPWJ')
& .and.(collider.ne.'PPWQ').and.(collider.ne.'PPWG')
& .and.(collider.ne.'PPDY')) then
write(logfid,*)'Fatal error: colliding system unknown, '//
& 'will exit now'
call exit(1)
endif
C--initialize medium
intmass = int(mass)
CALL MEDINIT(FILEMED,logfid,etamax,intmass)
CALL MEDNEXTEVT
OPEN(unit=HPMCFID,file=HEPMCFILE,status='unknown')
WRITE(HPMCFID,*)
WRITE(HPMCFID,'(A)')'HepMC::Version 2.06.05'
WRITE(HPMCFID,'(A)')'HepMC::IO_GenEvent-START_EVENT_LISTING'
NPART=2
if(ptmax.gt.0.)then
EOVEST=MIN(1.5*(PTMAX+50.)*COSH(ETAMAX),sqrts/2.)
else
EOVEST=sqrts/2.
endif
CALL EIXINT
CALL INSUDAINT(EOVEST)
write(logfid,*)
INQUIRE(file=FILESPLIT,exist=SPLITIEXIST)
IF(SPLITIEXIST)THEN
write(logfid,*)'read splitting integrals from ',FILESPLIT
OPEN(unit=10,file=FILESPLIT,status='old')
READ(10,*)QMAX,ZMMIN,NPOINT
DO 893 I=1,NPOINT+1
READ(10,*) QVAL(I),ZMVAL(I)
893 CONTINUE
DO 891 I=1,NPOINT+1
DO 892 J=1,NPOINT+1
READ(10,*)SPLITIGGV(I,J),SPLITIQQV(I,J),SPLITIQGV(I,J)
892 CONTINUE
891 CONTINUE
CLOSE(10,status='keep')
ELSE
write(logfid,*)'have to integrate splitting functions, '//
&'this may take some time'
CALL SPLITFNCINT(EOVEST)
INQUIRE(file=FILESPLIT,exist=SPLITIEXIST)
IF(.NOT.SPLITIEXIST)THEN
write(logfid,*)'write splitting integrals to ',FILESPLIT
OPEN(unit=10,file=FILESPLIT,status='new')
WRITE(10,*)QMAX,ZMMIN,NPOINT
DO 896 I=1,NPOINT+1
WRITE(10,*) QVAL(I),ZMVAL(I)
896 CONTINUE
DO 897 I=1,NPOINT+1
DO 898 J=1,NPOINT+1
WRITE(10,*)SPLITIGGV(I,J),SPLITIQQV(I,J),SPLITIQGV(I,J)
898 CONTINUE
897 CONTINUE
CLOSE(10,status='keep')
ENDIF
ENDIF
write(logfid,*)
INQUIRE(file=PDFFILE,exist=PDFEXIST)
IF(PDFEXIST)THEN
write(logfid,*)'read pdfs from ',PDFFILE
OPEN(unit=10,file=PDFFILE,status='old')
DO 872 I=1,2
DO 873 J=1,1000
READ(10,*)QINQX(I,J),GINQX(I,J),QINGX(I,J),GINGX(I,J)
873 CONTINUE
872 CONTINUE
CLOSE(10,status='keep')
ELSE
write(logfid,*)'have to integrate pdfs, this may take some time'
CALL PDFINT(EOVEST)
INQUIRE(file=PDFFILE,exist=PDFEXIST)
IF(.NOT.PDFEXIST)THEN
write(logfid,*)'write pdfs to ',PDFFILE
OPEN(unit=10,file=PDFFILE,status='new')
DO 876 I=1,2
DO 877 J=1,1000
WRITE(10,*)QINQX(I,J),GINQX(I,J),QINGX(I,J),GINGX(I,J)
877 CONTINUE
876 CONTINUE
CLOSE(10,status='keep')
ENDIF
ENDIF
write(logfid,*)
INQUIRE(file=XSECFILE,exist=XSECEXIST)
IF(XSECEXIST)THEN
write(logfid,*)'read cross sections from ',XSECFILE
OPEN(unit=10,file=XSECFILE,status='old')
DO 881 J=1,1001
DO 885 JJ=1,101
READ(10,*)INTQ1(J,JJ),INTQ2(J,JJ),
&INTG1(J,JJ),INTG2(J,JJ)
885 CONTINUE
881 CONTINUE
CLOSE(10,status='keep')
ELSE
write(logfid,*)'have to integrate cross sections, '//
&'this may take some time'
CALL XSECINT(EOVEST)
INQUIRE(file=XSECFILE,exist=XSECEXIST)
IF(.NOT.XSECEXIST)THEN
write(logfid,*)'write cross sections to ',XSECFILE
OPEN(unit=10,file=XSECFILE,status='new')
DO 883 J=1,1001
DO 884 JJ=1,101
WRITE(10,*)INTQ1(J,JJ),INTQ2(J,JJ),
&INTG1(J,JJ),INTG2(J,JJ)
884 CONTINUE
883 CONTINUE
CLOSE(10,status='keep')
ENDIF
ENDIF
write(logfid,*)
CALL FLUSH(3)
C--initialise random number generator status
IF(NJOB.GT.0)THEN
MRPY(1)=NJOB*1000
MRPY(2)=0
ENDIF
C--Call PYR once for initialization
R=PYR(0)
NDISC=0
NGOOD=0
NSTRANGE=0
ERRCOUNT=0
errl = 0
NSCAT=0.d0
NSCATEFF=0.d0
NSPLIT=0.d0
ntotspliti=0
noverspliti=0
ntotpdf=0
noverpdf=0
ntotxsec=0
noverxsec=0
ntotsuda=0
noversuda=0
IF(NSET.EQ.0)THEN
EPS09=.FALSE.
ELSE
EPS09=.TRUE.
IF(NSET.LT.10)THEN
WRITE(SNSET,'(i1)') NSET
ELSE
WRITE(SNSET,'(i2)') NSET
ENDIF
INITSTR='EPS09LO,'//SNSET
ENDIF
end
***********************************************************************
*** subroutine initpythia
***********************************************************************
subroutine initpythia(beam1,beam2)
implicit none
INTEGER PYCOMP
INTEGER NMXHEP
C--Common block of Pythia
COMMON/PYJETS/N,NPAD,K(23000,5),P(23000,5),V(23000,5)
INTEGER N,NPAD,K
DOUBLE PRECISION P,V
COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
INTEGER MSTU,MSTJ
DOUBLE PRECISION PARU,PARJ
COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
INTEGER MDCY,MDME,KFDP
DOUBLE PRECISION BRAT
COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)
INTEGER MSEL,MSELPD,MSUB,KFIN
DOUBLE PRECISION CKIN
COMMON/PYPARS/MSTP(200),PARP(200),MSTI(200),PARI(200)
INTEGER MSTP,MSTI
DOUBLE PRECISION PARP,PARI
COMMON/PYDATR/MRPY(6),RRPY(100)
INTEGER MRPY
DOUBLE PRECISION RRPY
C--use nuclear pdf?
COMMON/NPDF/MASS,NSET,EPS09,INITSTR
INTEGER NSET
DOUBLE PRECISION MASS
LOGICAL EPS09
CHARACTER*10 INITSTR
C--pdfset
common/pdf/pdfset
integer pdfset
C--Parameter common block
COMMON/PARAM/Q0,LPS,LQCD,LTIME,SCALEFACM,ANGORD,SCATRECOIL,
&ALLHAD,compress,NF
INTEGER NF
DOUBLE PRECISION Q0,LQCD,LTIME,LPS,SCALEFACM
LOGICAL ANGORD,SCATRECOIL,ALLHAD,compress
C--discard event flag
COMMON/DISC/NDISC,NSTRANGE,NGOOD,errcount,wdisc,DISCARD
LOGICAL DISCARD
INTEGER NDISC,NSTRANGE,NGOOD,errcount
double precision wdisc
C--event weight
COMMON/WEIGHT/EVWEIGHT,sumofweights
double precision EVWEIGHT,sumofweights
C--event weight exponent
COMMON/WEXPO/WEIGHTEX
DOUBLE PRECISION WEIGHTEX
C--memory for error message from getdeltat
common/errline/errl
integer errl
C--organisation of event record
common/evrecord/nsim,npart,offset,hadrotype,sqrts,collider,hadro,
&shorthepmc,channel,isochannel
integer nsim,npart,offset,hadrotype
double precision sqrts
character*4 collider,channel
character*2 isochannel
logical hadro,shorthepmc
C--Pythia parameters
common/pythiaparams/PTMIN,PTMAX,weighted
double precision PTMIN,PTMAX
LOGICAL WEIGHTED
C--Variables local to this program
character*2 beam1,beam2
C--initialise PYTHIA
C--no multiple interactions
MSTP(81) = 0
C--initial state radiation
MSTP(61)=1
C--switch off final state radiation
MSTP(71)=0
C--No hadronisation (yet)
MSTP(111)=0
C--parameter affecting treatment of string corners
PARU(14)=1.
C--Min shat in simulation
CKIN(1)=2.
C--pT-cut
CKIN(3)=PTMIN
CKIN(4)=PTMAX
C--use LHAPDF
MSTP(52)=2
C--choose pdf: CTEQ6ll (LO fit/LO alphas) - 10042
C MSTW2008 (LO central) - 21000
MSTP(51)=PDFSET
IF(COLLIDER.EQ.'PPYQ')THEN
MSEL=0
MSUB(29)=1
ELSEIF(COLLIDER.EQ.'PPYG')THEN
MSEL=0
MSUB(14)=1
MSUB(115)=1
ELSEIF(COLLIDER.EQ.'PPYJ')THEN
MSEL=0
MSUB(14)=1
MSUB(29)=1
MSUB(115)=1
ELSEIF((COLLIDER.EQ.'PPZJ').or.(COLLIDER.EQ.'PPZQ')
& .or.(COLLIDER.EQ.'PPZG')
& .or.(collider.eq.'PPDY'))THEN
MSEL=0
IF((COLLIDER.EQ.'PPZJ').or.(COLLIDER.EQ.'PPZQ')) MSUB(30)=1
IF((COLLIDER.EQ.'PPZJ').or.(COLLIDER.EQ.'PPZG')) MSUB(15)=1
IF(COLLIDER.EQ.'PPDY') MSUB(1)=1
MDME(174,1)=0 !Z decay into d dbar',
MDME(175,1)=0 !Z decay into u ubar',
MDME(176,1)=0 !Z decay into s sbar',
MDME(177,1)=0 !Z decay into c cbar',
MDME(178,1)=0 !Z decay into b bbar',
MDME(179,1)=0 !Z decay into t tbar',
MDME(182,1)=0 !Z decay into e- e+',
MDME(183,1)=0 !Z decay into nu_e nu_ebar',
MDME(184,1)=0 !Z decay into mu- mu+',
MDME(185,1)=0 !Z decay into nu_mu nu_mubar',
MDME(186,1)=0 !Z decay into tau- tau+',
MDME(187,1)=0 !Z decay into nu_tau nu_taubar',
if (channel.EQ.'ELEC')THEN
MDME(182,1)=1
ELSEIF(channel.EQ.'MUON')THEN
MDME(184,1)=1
ENDIF
ELSEIF((COLLIDER.EQ.'PPWJ').or.(COLLIDER.EQ.'PPWQ')
& .or.(COLLIDER.EQ.'PPWG'))THEN
MSEL=0
IF((COLLIDER.EQ.'PPWJ').or.(COLLIDER.EQ.'PPWQ')) MSUB(31)=1
IF((COLLIDER.EQ.'PPWJ').or.(COLLIDER.EQ.'PPWG')) MSUB(16)=1
MDME(190,1)=0 ! W+ decay into dbar u,
MDME(191,1)=0 ! W+ decay into dbar c,
MDME(192,1)=0 ! W+ decay into dbar t,
MDME(194,1)=0 ! W+ decay into sbar u,
MDME(195,1)=0 ! W+ decay into sbar c,
MDME(196,1)=0 ! W+ decay into sbar t,
MDME(198,1)=0 ! W+ decay into bbar u,
MDME(199,1)=0 ! W+ decay into bbar c,
MDME(200,1)=0 ! W+ decay into bbar t,
MDME(202,1)=0 ! W+ decay into b'bar u,
MDME(203,1)=0 ! W+ decay into b'bar c,
MDME(204,1)=0 ! W+ decay into b'bar t,
MDME(206,1)=0 ! W+ decay into e+ nu_e,
MDME(207,1)=0 ! W+ decay into mu+ nu_mu,
MDME(208,1)=0 ! W+ decay into tau+ nu_tau,
MDME(209,1)=0 ! W+ decay into tau'+ nu'_tau,
if (channel.EQ.'ELEC')THEN
MDME(206,1)=1
ELSEIF(channel.EQ.'MUON')THEN
MDME(207,1)=1
ENDIF
ELSE
C--All QCD processes are active
MSEL=1
ENDIF
! MSEL=0
! MSUB(11)=1
! MSUB(12)=1
! MSUB(53)=1
! MSUB(13)=1
! MSUB(68)=1
! MSUB(28)=1
C--weighted events
IF(WEIGHTED) MSTP(142)=1
C--number of errors to be printed
MSTU(22)=MAX(10,INT(5.*NSIM/100.))
C--number of lines in event record
MSTU(4)=23000
MSTU(5)=23000
C--switch off pi0 decay
MDCY(PYCOMP(111),1)=0
C--initialisation call
IF(COLLIDER.EQ.'EEJJ')THEN
OFFSET=9
CALL PYINIT('CMS',beam1,beam2,sqrts)
ELSEIF((COLLIDER.EQ.'PPJJ').OR.(COLLIDER.EQ.'PPYJ').OR.
& (COLLIDER.EQ.'PPYG').OR.(COLLIDER.EQ.'PPYQ'))THEN
OFFSET=8
CALL PYINIT('CMS',beam1,beam2,sqrts)
ELSEIF((COLLIDER.EQ.'PPWJ').OR.(COLLIDER.EQ.'PPZJ').or.
& (COLLIDER.EQ.'PPWQ').OR.(COLLIDER.EQ.'PPZQ').or.
& (COLLIDER.EQ.'PPWG').OR.(COLLIDER.EQ.'PPZG'))THEN
OFFSET=10
CALL PYINIT('CMS',beam1,beam2,sqrts)
elseif (collider.eq.'PPDY') then
CALL PYINIT('CMS',beam1,beam2,sqrts)
ENDIF
end
***********************************************************************
*** subroutine genevent
***********************************************************************
subroutine genevent(j,b1,b2)
implicit none
C--identifier of file for hepmc output and logfile
common/hepmcid/hpmcfid,logfid
integer hpmcfid,logfid
INTEGER PYCOMP
INTEGER NMXHEP
C--Common block of Pythia
COMMON/PYJETS/N,NPAD,K(23000,5),P(23000,5),V(23000,5)
INTEGER N,NPAD,K
DOUBLE PRECISION P,V
COMMON/PYDAT1/MSTU(200),PARU(200),MSTJ(200),PARJ(200)
INTEGER MSTU,MSTJ
DOUBLE PRECISION PARU,PARJ
COMMON/PYDAT3/MDCY(500,3),MDME(8000,2),BRAT(8000),KFDP(8000,5)
INTEGER MDCY,MDME,KFDP
DOUBLE PRECISION BRAT
COMMON/PYSUBS/MSEL,MSELPD,MSUB(500),KFIN(2,-40:40),CKIN(200)