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hadcas_30.f
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subroutine hadcas(ijk,neve,nout,time_had,ijkk)
c deals with the hadronic rescattering,
c composed by Ben-Hao Sa, 20/09/2000
c input message is in 'sa1_h', which plays working block as well
c output message is in 'sa1_h'
c ijk: the event number
c neve: total number of events
c nout: a internal output per nout events
c060112 if ijkk=1 give up current event avoiding infinite loop
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000,NSIZE=750000)
common/sa1_h/nsa,non1,ksa(kszj,5),psa(kszj,5),vsa(kszj,5)
common/sa8_h/tau(kszj),ishp(kszj)
common/sa9_h/kfmax,kfaco(100),numb(100),non9,disbe(100,100)
common/sa10_h/csnn,cspin,cskn,cspipi,cspsn,cspsm,rcsit,ifram,
& iabsb,iabsm,non10,csspn,csspm
common/sa19_h/coor(3)
common/sa20_h/t0,sig,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm
c ,rnt,rnp,ecsspn,ecsspm
common/count_h/isinel(600)
common/ctllist_h/nctl,noinel(600),nctl0,noel
common/syspar_h/pio
common/sa24/adj1(40),nnstop,non24,zstop ! 231104
common/sa25/i_inel_proc,i_time_shower,para1_1,para1_2 ! 221203 250204
common/pycidat2/kfmaxt,nont2,PARAM(20),weigh(600) ! 250204
c ifram = 0 for fixed target, = 1 for collider
c cspipi (fm^2): total cross section of pion + pion
c cspin (fm^2): total cross section of pion + nucleon
c cskn (fm^2): total cross section of Kaon + nucleon
c csnn (fm^2): total cross section of n + n
c cspsn: total cross section of J/psi (psi') + n
c cspsm: total cross section of J/psi (psi') + meson
c rcsit: ratio of inelastic to total cross section
c kfmax: the maximum # of particles with given flavor code
c kfaco(i): flavor code of i-th particle among kfmax
c numb(i): order # of last particle of particles with same flavor of
c kfaco(i) in particle list
c disbe(i,j): allowable minimum approaching distance between particles
c kfaco(i) & kfaco(j)
c sig (fm^2): cross section of pion + pion to Kaon + Kaon
c edipi: largest interaction distance between two pions.
c epin: largest interaction distance between pion and nucleon.
c ekn: largest interaction distance between Kaon and nucleon.
c ecsnn: largest interaction distance between two nucleons.
c t0: average proper formation time at rest.
c ddt: time accuracy
c!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
c 0. is hard core distance between two pions
c 0.5 is hard core distance between two nucleons
c 0. is hard core distance between pion and nucleon
c!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
c tau(i) : formation time of particle i.
c ishp(i)=1 if i-th particle inside the simulated volume
c =0 if i-th particle outside the simulated volume
c isinel(i) = 0 without i-th inelastic process
c = 1 with i-th inelastic process
c lc(i,1) and lc(i,2) are, respectively, line # in particle
c list of the colliding particles of i-th collision pair
c lc(i,3) and lc(i,4) are the flavor codes of scattered particles
c of i-th collision pair
c lc(i,5) identifies the different inelastic process,
c lc(i,5)=592, not used
c tc(i): collision time of i-th colliding pair
c tw(i): cross section ratio of (i-th inelas.)/tot
c pio : 3.1416
c nctl: number of collision pairs in the current collision list
c nctl0: number of collision pairs in last collision list
c noinel(i): statistics of the occurring of i-th inelastic process
c noel: statistics of the occurring of elastic process
dimension lc(nsize,5),tc(nsize),tw(nsize)
dimension peo(4)
time=time_had ! recovered on 280910
PARAM(1)=para1_2 ! 250204
pio=3.1416
c110923 iabsb=0 ! 110923 Lei
c110923 iabsm=0 ! 110923 Lei
c iabsb = 0 : without J/psi (psi') + baryon
c = 1 : with J/psi (psi') + baryon
c iabsm = 0 : without J/psi (psi') + meson
c = 1 : with J/psi (psi') + meson
c280910 if(ijk.eq.1)then
c give initial value to quantities needed in hardon rescattering
call sysini_h ! it has been called in main.f
c280910 endif
c initiation
nctl=0
lc=0
tc=0.
tw=0.
numb=0
do i=1,nsa
vsa(i,4)=0. ! 231104
tau(i)=0.
enddo
c231104
dpmax=adj1(27)
drmax=adj1(28)
do i1=1,nsa
pnn1=psa(i1,1)
pnn2=psa(i1,2)
pnn3=psa(i1,3)
pnn4=psa(i1,4)
rnn1=vsa(i1,1)
rnn2=vsa(i1,2)
rnn3=vsa(i1,3)
pnnm=pnn1*pnn1+pnn2*pnn2+pnn3*pnn3
if(pnnm.lt.1.e-28)pnnm=1.e-28
if(pnnm.gt.1.e28)then
ishp(i1)=0
goto 200
endif
pnnm=sqrt(pnnm)
rnnm=rnn1*rnn1+rnn2*rnn2+rnn3*rnn3
if(rnnm.lt.1.e-28)rnnm=1.e-28
if(rnnm.gt.1.e28)then
ishp(i1)=0
goto 200
endif
rnnm=sqrt(rnnm)
if((pnnm.le.dpmax.and.pnn4.le.dpmax).and.rnnm.le.drmax)then
ishp(i1)=1
else
ishp(i1)=0
endif
200 enddo
c231104
noel=0
noinel=0
c change K0S, K0L to K0, K0ba
do j=1,nsa
kf=ksa(j,2)
if(kf.eq.130 .or. kf.eq.310)then
rrlu=pyr(1)
ksa(j,2)=311
if(rrlu.gt.0.5)ksa(j,2)=-311
endif
enddo
c filter out particles wanted to study and make in order of proton,
c neutron, ...
c initial particle list is compsed of the arraies in common block
c 'sa1_h', 'tau' and 'ishp' in 'sa8_h', and 'numb' in 'sa9_h'
call filt_h
c280910 time=0.
c calculate position of center of mass of the system. distance of a
c particle from this cms is used to check whether it is freezes out
c or not
call copl_h(time)
c creat the initial collision list, note: be sure that the initial
c collision list must not be empty
call ctlcre_h(lc,tc,tw,time)
c administrate hadron rescattering
call scat_h(time,lc,tc,tw,ijkk,ijk,neve)
if(ijkk.eq.1)return ! 100603
c if ijkk=1 (infinite loops) give up the event
c call prt_sa1_h(nsa) ! sa
time_had=time
c change K0,K0ba to K0L and K0S
do j=1,nsa
kf=ksa(j,2)
if(kf.eq.311 .or. kf.eq.-311)then
rrlu=pyr(1)
ksa(j,2)=130
if(rrlu.gt.0.5)ksa(j,2)=310
endif
enddo
c call prt_sa1_h(nsa) ! sa
return
end
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine sysini_h
c give the initial values to the quantities needed in hardon rescattering
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000)
COMMON/PYCIDAT1/KFACOT(100),DISDET(100),ISINELT(600)
COMMON/PYCIDAT2/KFMAXT,NONT2,PARAM(20),WEIGH(600)
common/sa9_h/kfmax,kfaco(100),numb(100),non9,disbe(100,100)
common/sa10_h/csnn,cspin,cskn,cspipi,cspsn,cspsm,rcsit,ifram,
& iabsb,iabsm,non10,csspn,csspm
common/sa20_h/t0,sig,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm
c ,rnt,rnp,ecsspn,ecsspm
common/sa24/adj1(40),nnstop,non24,zstop ! 060404
common/syspar_h/pio
common/count_h/isinel(600)
c cross sections are given in fm^2 ! 250423
csnn=PARAM(1)*0.1
c250423 cspin=PARAM(2)*0.1
cspin=csnn*0.66666 ! 250423
c250423 0.66666=6/9, estimated by additive quark model (arXiv:2203.11061)
c250423 cskn=PARAM(3)*0.1
cskn=csnn*0.28444 ! 250423
c250423 0.8444=1.6*1.6/9
c250423 cspipi=PARAM(4)*0.1
cspipi=csnn*0.44444
c250423 0.44444=4/9
c250423 cspsn=PARAM(13)*0.1
cspsn=csnn*0.13333
c250423 0.13333=0.4*3/9
c250423 cspsm=PARAM(14)*0.1
cspsm=csnn*0.08888
c250423 0.08888=0.4*2/9
c250423 csspn=PARAM(15)*0.1
csspn=cspsn ! 250423
c250423 csspm=PARAM(16)*0.1
csspm=cspsm ! 250423
c largest interaction distance of two colliding particles.
edipi=sqrt(cspipi/3.1416)
epin=sqrt(cspin/3.1416)
ekn=sqrt(cskn/3.1416)
ecsnn=sqrt(csnn/3.1416)
ecspsn=sqrt(cspsn/3.1416)
ecspsm=sqrt(cspsm/3.1416)
ecsspn=sqrt(csspn/3.1416)
ecsspm=sqrt(csspm/3.1416)
sig=PARAM(5)*0.1
rcsit=PARAM(6)
t0=PARAM(7)
c dep=PARAM(9)
c060404 ddt=PARAM(8)
ddt=adj1(11) ! 060404
c rao=PARAM(10)
kfmax=KFMAXT
kfaco=KFACOT
isinel=ISINELT
disbe=0.
do j=1,kfmax
disbe(1,j)=DISDET(j)
disbe(2,j)=DISDET(j)
disbe(3,j)=DISDET(j)
disbe(4,j)=DISDET(j)
c disbe(26,j)=DISDET(j)
c disbe(27,j)=DISDET(j)
c disbe(28,j)=DISDET(j)
c disbe(29,j)=DISDET(j)
enddo
400 do i=1,99
do j=i+1,100
disbe(j,i)=disbe(i,j)
enddo
enddo
return
end
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine filt_h
c filter out particles wanted to study and make
c in order of
c 1 2 3 4 5 6 7 8 9 10
c 0 proton, neutron, pbar-, nbar, pi+, pi-, pi0, K-, Kbar0, Sigma0,
c 1 Sigma-, Sigma+, Sigmabar0, Sigmabar+, Sigmabar-, Lambda0, Lambdabar0, K0, K+, Xi-,
c 2 Xibar+, Xi0, Xibar0, Omega-, Omegabar+, Delta-, Delta0, Delta+, Delta++, rho+,
c 3 rho-, rho0, J/psi, psi', Deltabar+, Deltabar0, Deltabar-, Deltabar--, D+, D-,
c 4 D0, Dbar0, D*+, D*-, D*0, D*bar0, Lambda_c+, Lambda_cbar-, D_s+, D_s-,
c 5 D*_s+, D*_s-, K*+, K*-, K*0, K*bar0, Upsilon, Upsilon', chi_0c, chi_1c,
c 6 chi_2c, Sigma_c0, Sigma_c+, Sigma_c++, Sigma_cbar0, Sigma_cbar+, Sigma_cbar++, omega, B0, B0bar,
c 7 B+, B-, B_s0, B_sbar0, B_c+, B_c-, B*0, B*bar0, B*+, B*-,
c 8 B*_s0, B*_sbar0, B*_c+, B*_c-, Lambda_b0, Lambda_bbar0, Sigma_b0, Sigma_bbar0, Sigma_b-, Sigma_bbar+,
c 9 Sigma_b+, Sigma_bbar-, 8*0 ! 250420 112323 Lei
c (92 kinds of particle altogether) ! 250420 112323 Lei
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000)
common/sa1_h/n,non1,k(kszj,5),p(kszj,5),v(kszj,5)
common/sa9_h/kfmax,kfaco(100),numb(100),non9,disbe(100,100)
iii=0
jjj=0
do i=1,kfmax
kf=kfaco(i)
do j=iii+1,n
call ord_h(jjj,j,kf)
enddo
iii=jjj
numb(i)=jjj
enddo
return
end
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine ord_h(ipi,j,kf)
c make in order for particles with flavor code kf.
c j : the particle wanted to order
c kf: flavor code of j-th particle
c ipi : j-th particle should order after ipi
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000)
common/sa1_h/n,non1,k(kszj,5),p(kszj,5),v(kszj,5)
dimension kk(5),pp(5),vv(5)
ik=k(j,2)
if(ik.eq.kf)then
ipi=ipi+1
do jj=1,5
kk(jj)=k(ipi,jj)
pp(jj)=p(ipi,jj)
vv(jj)=v(ipi,jj)
enddo
do jj=1,5
k(ipi,jj)=k(j,jj)
p(ipi,jj)=p(j,jj)
v(ipi,jj)=v(j,jj)
enddo
do jj=1,5
k(j,jj)=kk(jj)
p(j,jj)=pp(jj)
v(j,jj)=vv(jj)
enddo
endif
return
end
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine copl_h(tt)
c calculate position of center of mass of the non-freeze-out system
c distance of a particle from this cms is used to checke whether
c it freezes out or not
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000)
common/sa1_h/n,non1,k(kszj,5),p(kszj,5),v(kszj,5)
COMMON/PYDAT2/KCHG(500,4),PMAS(500,4),PARF(2000),VCKM(4,4)
common/sa8_h/tau(kszj),ishp(kszj)
common/sa19_h/coor(3)
do ii=1,3
coor(ii)=0.
enddo
samass=0.
do 110 ii=1,n
if(ishp(ii).eq.0)goto 110
kf=k(ii,2)
amass=pmas(pycomp(kf),1)
samass=samass+amass
do 100 jj=1,3
coor(jj)=coor(jj)+amass*v(ii,jj)
100 continue
110 continue
do ii=1,3
coor(ii)=coor(ii)/max(0.14,samass)
enddo
return
end
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine ctlcre_h(lc,tc,tw,time)
c create the initial collision list
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000,NSIZE=750000)
common/sa1_h/nsa,non1,ksa(kszj,5),psa(kszj,5),vsa(kszj,5)
common/sa9_h/kfmax,kfaco(100),numb(100),non9,disbe(100,100)
common/sa20_h/t0,sig,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm
c ,rnt,rnp,ecsspn,ecsspm
common/ctllist_h/nctl,noinel(600),nctl0,noel
common/syspar_h/pio
dimension lc(nsize,5),tc(nsize),tw(nsize)
m2=numb(2) ! up to n (neutron)
m4=numb(4) ! up to nbar
m7=numb(7) ! up to pi0
m9=numb(9) ! up to K0bar
m17=numb(17) ! up to Lambdabar0
m19=numb(19) ! up to K+
m25=numb(25) ! up to Omegabar+
m29=numb(29) ! up to Delta++
m32=numb(32) ! up to rho0
m34=numb(34) ! up to psi'
m46 = numb(46) ! 231123 Lei up to D*bar0
! m48 = numb(48) ! 231123 Lei up to Lambda_cbar-
! m52 = numb(52) ! 231123 Lei up to D*_s-
c <= m19, reiniteraction including nucleon, pion, Kaon, Sigma, Lambda
! m_low = m25 ! 231123 consider reiniteraction not including Xi or Omega
! m_upp = m34 ! 231123 consider reiniteraction up to psi'
m_low = m19 ! 231123 consider reiniteraction including Xi and Omega
m_upp = m46 ! 231123 consider reiniteraction up to D*bar0
nctl=1
do 500 l=1,nsa-1
if( l.le.m19
c .or. (l.gt.m_low .and. l.le.m_upp) ) goto 300 ! 231123 Lei
c231123 Lei c .or. (l.gt.m25 .and. l.le.m34))goto 300
c Consider only the reinteraction among nucleon, pion, Kaon, Xi, Omega,
c Sigma, Lambda, Delta, rho, J/psi, psi' and D mesons. ! 231123 Lei
goto 500
300 do 600 l1=l+1,nsa
if(nctl.gt.nsize)then
write(9,*)'1 nsa,nctl,ddt=',nsa,nctl,ddt
write(9,*)'size of array "nsize" needs to be extended'
write(9,*)'error is serious,stop running'
stop 30000
endif
if( l1.le.m19
c .or. (l1.gt.m_low .and. l1.le.m_upp) ) goto 700 ! 231123 Lei
c231123 Lei c .or. (l1.gt.m25 .and. l1.le.m34))goto 700
c Consider only the reinteraction among nucleon, pion, Kaon, Xi, Omega,
c Sigma, Lambda, Delta, rho, J/psi, psi' and D mesons. ! 231123 Lei
goto 600
700 iflag=0
call rsfilt_h(l,l1,iflag)
if(iflag.eq.0)goto 600
tc(nctl)=0.0
call tcolij_h(l,l1,time,nctl,lc,tc,tw)
c170204 if(tc(nctl).gt.1.0e-7) nctl=nctl+1
c170204
tci=tc(nctl)
c110504
if(tci.gt.1.0e-7)then
c if(tci.eq.0.0)goto 600
c from 'tcolij' unsuccessfully, goto 600
if(nctl.eq.1)then
nctl=nctl+1
goto 600
endif
c110504
do j1=1,nctl-1
tcj=tc(j1)
if(abs(tcj-tci).lt.ddt)goto 600
enddo
nctl=nctl+1
endif
c170204
600 continue
500 continue
c300623 if(tc(nctl).le.1.e-7) nctl=nctl-1 ! 300623 Lei
nctl=nctl-1 ! 300623 Lei
return
end
ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine scat_h(time,lc,tc,tw,ijkk,ijk,neve)
c administrate hadron rescattering
c ijk: the run number
c if ijkk=1 (infinite loop) give up the event
c neve: total number of runs
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000,NSIZE=750000)
common/sa1_h/nsa,non1,ksa(kszj,5),psa(kszj,5),vsa(kszj,5)
common/sa8_h/tau(kszj),ishp(kszj)
common/sa9_h/kfmax,kfaco(100),numb(100),non9,disbe(100,100)
common/sa10_h/csnn,cspin,cskn,cspipi,cspsn,cspsm,rcsit,ifram,
& iabsb,iabsm,non10,csspn,csspm
common/sa19_h/coor(3)
common/sa20_h/t0,sig,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm
c ,rnt,rnp,ecsspn,ecsspm
common/syspar_h/pio
common/ctllist_h/nctl,noinel(600),nctl0,noel
dimension lc(nsize,5),tc(nsize),tw(nsize)
dimension pi(4),pj(4),pii(4),pjj(4),peo(4),pint(4),b(3)
integer winel
ijkk=0
nctl0=nctl
iii=1
10 if(iii.eq.1)goto 1000
call copl_h(time)
c find out the binary colli. with minimum collsion time
1000 call find_h(icp,tcp,lc,tc,tw,1)
if(icp.eq.0)goto 100
c icp=0 means the collision list is empty
c141104
if(tcp.gt.1.e10)then
do i1=icp+1,nctl
do j1=1,5
lc(i1-1,j1)=lc(i1,j1)
enddo
tc(i1-1)=tc(i1)
tw(i1-1)=tw(i1)
enddo
nctl=nctl-1
goto 10
endif
c141104
time0=time
l=lc(icp,1)
l1=lc(icp,2)
kfa=ksa(l,2) ! 060603
kfb=ksa(l1,2) ! 060603
time=tcp
c record this collision time
20 continue
c perform classical Newton motion in Lab. system
call his_h(time,lc,tc,tw,istop)
if(istop.eq.1)goto 100
c istop=1 means all particles have get out of considered volume
pi(4)=psa(l,4)
pj(4)=psa(l1,4)
if(pi(4).lt.1.e-10)pi(4)=1.e-10 ! 031204
if(pj(4).lt.1.e-10)pj(4)=1.e-10 ! 031204
do i=1,3
pi(i)=psa(l,i)
pj(i)=psa(l1,i)
b(i)=(pi(i)+pj(i))/(pi(4)+pj(4))
enddo
c boost to CMS frame of colliding pair
ilo=0
call lorntz(ilo,b,pi,pj)
ss=pi(4)+pj(4)
ww=rcsit
c the cross section ratio of (ela.)/tot =1- rcsit
rrlu=pyr(1)
if(rrlu.gt.ww)then
winel=0 ! ela.
goto 640
endif
700 winel=1 ! inela.
c two particles with four-momentum pi and pj in CMS frame and flavor
c ksa(l,2),ksa(l1,2) might go through inelastic reaction
call coinel(l,l1,ss,b,pi,pj,icp,pii,pjj,lc,tc,tw,winel,ik3,ik4)
c if winel=0 the inelastic reaction has not really happened
c if winel=1 inelastic collision happens, ik3 and ik4 are
c flavors of the scattered particles, pii and pjj are four-momentum of
c scattered particles in Lab frame, the two colliding particles are
c still with line numbers of l and l1 in the particle list
640 if(winel.ne.0)then !!!
c treat the inelastic collision
icp5=lc(icp,5)
noinel(icp5)=noinel(icp5)+1
c update particle list after inelastic collision
c and truncates collision list correspondingly
call updpli(l,l1,icp,ss,pii,pjj,lc,tc,tw,winel,time,icp5)
l=lc(icp,1)
l1=lc(icp,2)
c l and l1 are now the line numbers of scattered particles in
c particle list.
else !!!
c calculate four-momentum of scattered particles after elastic
c collistion (pi and pj in CMS frame)
call coelas_h(l,l1,ss,pi,pj)
c update particle list for elastic scattering, pi and pj have been
c boosted back to Lab fram
call updple_h(l,l1,b,pi,pj,time)
noel=noel+1
endif !!!
c update the collision list
call updatl_h(l,l1,time,lc,tc,tw,winel,iii)
301 continue
c if(nctl.le.1)goto 300
c deltt=time-time0
c deal with particle decay in transport processes
c call decay(time,deltt,lc,tc,tw,iii,ijk)
c ich2=0. !!
c do i1=1,nsa !!
c kf=ksa(i1,2) !!
c ich2=ich2+pychge(kf) !!
c enddo !!
c goto 100 ! it is actived temporally
300 iii=iii+1
if(iii.gt.100*(nctl0))then
write(9,*)'infinite loop may have happened in'
write(9,*)'subroutine scat ijk=',ijk
c10/08/98 stop 'infinite loop occurs'
ijk=ijk-1 ! 10/08/98
ijkk=1 ! 10/08/98
c if ijkk=1 (infinite loop) give up the event
return ! 10/08/98
endif
goto 10
100 continue
1200 continue
return
end
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine find_h(icp,tcp,lc,tc,tw,ico)
c find out the binary collision with minimum collision time
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER(NSIZE=750000)
common/ctllist_h/nctl,noinel(600),nctl0,noel
dimension lc(nsize,5),tc(nsize),tw(nsize)
icp=0
tcp=20000.
do i=1,nctl
if(ico.eq.0)goto 100
if(tc(i).le.1.0e-7)goto 241
100 if(tcp.lt.tc(i))goto 241
icp=i
tcp=tc(i)
241 continue
enddo
if(nctl.eq.0)icp=0
return
end
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine his_h(t1,lc,tc,tw,istop) ! 231104
c classical Newton motion in Lab. system
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
INTEGER PYK,PYCHGE,PYCOMP
PARAMETER (KSZJ=80000,NSIZE=750000)
common/sa1_h/nsa,non1,ksa(kszj,5),psa(kszj,5),vsa(kszj,5)
common/sa8_h/tau(kszj),ishp(kszj)
common/sa19_h/coor(3)
common/sa20_h/t0,sig,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm
c ,rnt,rnp,ecsspn,ecsspm
common/sa24/adj1(40),nnstop,non24,zstop
common/ctllist_h/nctl,noinel(600),nctl0,noel
dimension lc(nsize,5),tc(nsize),tw(nsize)
istop=1 ! 231104
in=0 ! 231104
r0=adj1(28)
do 200 i=1,nsa
c if(t1.le.tau(i))goto 100
c do move particles which have not produced
if(ishp(i).eq.1) goto 10
in=in+1
goto 100
10 aa=0.
pp4=psa(i,4)
do j=1,3
vp=psa(i,j)/pp4
vsa(i,j)=vsa(i,j)+vp*(t1-vsa(i,4))
aa=aa+(vsa(i,j)-coor(j))**2
enddo
c100505 vsa(i,4)=t1
aa=sqrt(aa)
if(aa.lt.r0) goto 300 ! 100 originally, 100505
c if freeze-out already, deduct the distance between the last and
c current collisions
do j=1,3
vp=psa(i,j)/pp4
vsa(i,j)=vsa(i,j)-vp*(t1-vsa(i,4))
enddo
ishp(i)=0
do il=1,nctl
if(lc(il,1).eq.i.or.lc(il,2).eq.i) tc(il)=0.
enddo
goto 200 ! 300623 Lei
300 vsa(i,4)=t1 ! 100505
100 continue
200 continue
if(in.eq.nsa) return
istop=0
return
end
C&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
subroutine coinel(l,l1,ss,b,pi,pj,icp,pii,pjj,lc,tc,tw,winel,
& ik1,ik2)
c treat the inelastic collision
c the inelastic processes considered are:
c strangeness production reactions:
c 1. pion+ + pion- to k+ + k-
c 2. pion+ + pion- to k0 + k0-
c 3. pion+ + pion0 to k+ + k0-
c 4. pion- + pion0 to k- + k0
c 5. pion0 + pion0 to k+ + k-
c 6. pion0 + pion0 to k0 + k0-
c 7. pion+ + p to k+ + sigma+
c 8. pion+ + n to k+ + sigma0
c 9. pion+ + n to k+ + lambda
c 10. pion+ + n to k0 + sigma+
c 11. pion- + p to k+ + sigma-
c 12. pion- + p to k0 + lambda
c 13. pion- + p to k0 + sigma0
c 14. pion- + n to k0 + sigma-
c 15. pion0 + p to k+ + sigma0
c 16. pion0 + p to k+ + lambda
c 17. pion0 + p to k0 + sigma+
c 18. pion0 + n to k+ + sigma-
c 19. pion0 + n to k0 + lambda
c 20. pion0 + n to k0 + sigma0
c 21. pion+ + pba to k0- + lambdaba
c 22. pion+ + pba to k0- + sigma0ba
c 23. pion+ + pba to k- + sigma-ba
c 24. pion+ + nba to k0- + sigma-ba
c 25. pion- + pba to k- + sigma+ba
c 26. pion- + nba to k- + lambdaba
c 27. pion- + nba to k- + sigma0ba
c 28. pion- + nba to k0- + sigma+ba
c 29. pion0 + pba to k- + lambdaba
c 30. pion0 + pba to k- + sigma0ba
c 31. pion0 + pba to k0- + sigma+ba
c 32. pion0 + nba to k- + sigma-ba
c 33. pion0 + nba to k0- + lambdaba
c 34. pion0 + nba to k0- + sigma0ba
c 35. pion+ + sigma- to k+ + cascade-
c 36. pion- + lambda to k0 + cascade-
c 37. pion- + sigma+ to k+ + cascade-
c 38. pion- + sigma0 to k0 + cascade-
c 39. pion0 + lambda to k+ + cascade-
c 40. pion0 + sigma- to k0 + cascade-
c 41. pion0 + sigma0 to k+ + cascade-
c 42. pion+ + lambdaba to k0- + cascade-ba
c 43. pion+ + sigma+ba to k- + cascade-ba
c 44. pion+ + sigma0ba to k0- + cascade-ba
c 45. pion- + sigma-ba to k- + cascade-ba
c 46. pion0 + lambdaba to k- + cascade-ba
c 47. pion0 + sigma-ba to k0- + cascade-ba
c 48. pion0 + sigma0ba to k- + cascade-ba
c strangeness exchange reactions:
c 49. k- + p to pion0 + lambda
c 50. k- + p to pion0 + sigma0
c 51. k- + p to pion- + sigma+
c 52. k- + p to pion+ + sigma-
c 53. k- + p to k+ + cascade- (strangeness production)
c 54. k- + n to pion- + sigma0
c 55. k- + n to pion- + lambda
c 56. k- + n to pion0 + sigma-
c 57. k- + n to k0 + cascade- (strangeness production)
c 58. k0- + p to pion+ + lambda
c 59. k0- + p to pion+ + sigma0
c 60. k0- + p to pion0 + sigma+
c 61. k0- + n to pion+ + sigma-
c 62. k0- + n to pion- + sigma+
c 63. k0- + n to pion0 + sigma0
c 64. k0- + n to pion0 + lambda
c 65. k0- + n to k+ + cascade- (strangeness production)
c 66. k+ + p- to pion0 + lambda-
c 67. k+ + p- to pion0 + sigma0-
c 68. k+ + p- to pion+ + sigma+ba
c 69. k+ + p- to pion- + sigma-ba
c 70. k+ + p- to k- + cascade-ba (strangeness production)
c 71. k+ + n- to pion+ + sigma0-
c 72. k+ + n- to pion+ + lambda-
c 73. k+ + n- to pion0 + sigma-ba
c 74. k+ + n- to k0- + cascade-ba(strangeness production)
c 75. k0 + p- to pion- + lambda-
c 76. k0 + p- to pion- + sigma0-
c 77. k0 + p- to pion0 + sigma+ba
c 78. k0 + n- to pion- + sigma-ba
c 79. k0 + n- to pion+ + sigma+ba
c 80. k0 + n- to pion0 + sigma0-
c 81. k0 + n- to pion0 + lambda-
c 82. k0 + n- to k- + cascade-ba (strangeness production)
c 83. k- + lambda to pion0 + cascade-
c 84. k- + sigma+ to pion+ + cascade-
c 85. k- + sigma- to pion- + cascade-
c 86. k- + sigma0 to pion0 + cascade-
c 87. k0- + lambda to pion+ + cascade-
c 88. k0- + sigma0 to pion+ + cascade-
c 89. k0- + sigma- to pion0 + cascade-
c 90. k+ + lambda- to pion0 + cascade-ba
c 91. k+ + sigma+ba to pion- + cascade-ba
c 92. k+ + sigma-ba to pion+ + cascade-ba
c 93. k+ + sigma0- to pion0 + cascade-ba
c 94. k0 + lambda- to pion- + cascade-ba
c 95. k0 + sigma0- to pion- + cascade-ba
c 96. k0 + sigma-ba to pion0 + cascade-ba
c 97. pion+ + sigma- to k0 + cascade0
c 98. pion+ + sigma0 to k+ + cascade0
c 99. pion+ + lambda0 to k+ + cascade0
c 100. pion- + sigma+ to k0 + cascade0
c 101. pion0 + sigma+ to k+ + cascade0
c 102. pion0 + sigma0 to k0 + cascade0
c 103. pion0 + lambda to k0 + cascade0
c 104. pion+ + sigma+ba to k0- + cascade0-
c 105. pion- + sigma-ba to k0- + cascade0-
c 106. pion- + sigma0- to k- + cascade0-
c 107. pion- + lambda- to k- + cascade0-
c 108. pion0 + sigma+- to k- + cascade0-
c 109. pion0 + sigma0- to k0- + cascade0-
c 110. pion0 + lambda- to k0- + cascade0-
c 111. k- + sigma+ to pion0 + cascade0
c 112. k- + sigma0 to pion0 + cascade-
c 113. k- + lambda to pion- + cascade0
c 114. k0- + sigma+ to pion+ + cascade0
c 115. k0- + sigma- to pion- + cascade0
c 116. k0- + sigma0 to pion0 + cascade0
c 117. k0- + lambda to pion0 + cascade0
c 118. k+ + sigma+ba to pion0 + cascade0-
c 119. k+ + sigma0- to pion+ + cascade0-
c 120. k+ + lambda- to pion+ + cascade0-
c 121. k+ + cascade-ba to pion+ + Omega-ba
c 122. k0 + sigma-ba to pion+ + cascade0ba
c 123. k0 + sigma0- to pion0 + cascade0-
c 124. k0 + lambda- to pion0 + cascade0ba
c 125. k- + p to k0 + cascade0
c 126. k0- + p to k+ + cascade0
c 127. k0- + n to k0 + cascade0
c 128. k+ + p- to k0- + cascade0ba
c 129. k0 + p- to k- + cascade0-
c 130. k0 + n- to k0- + cascade0-
c 131. pion+ + cascade- to k+ + Omega-
c 132. pion0 + cascade- to k0 + Omega-
c 133. pion- + cascade-ba to k- + Omega-ba
c 134. pion0 + cascade-ba to k0- + Omega-ba
c 135. pion- + cascade0 to k0 + Omega-
c 136. pion0 + cascade0 to k+ + Omega-
c 137. pion+ + cascade0- to k0- + Omega-ba
c 138. pion0 + cascade0- to k- + Omega-ba
c 139. k- + cascade- to pion- + Omega-
c 140. k0- + cascade- to pion0 + Omega-
c 141. k- + cascade0 to pion0 + Omega-
c 142. k0- + cascade0 to pion+ + Omega-
c 143. k+ + cascade-ba to pion+ + Omega-ba
c 144. k0 + cascade-ba to pion0 + Omega-ba
c 145. k+ + cascade0- to pion0 + Omega-ba
c 146. k0 + cascade0- to pion- + Omega-ba
c 147. pion- + p to delta- + pion+
c 148. pion- + p to rho0 + n
c 149. pion- + p to rho- + p
c 150. pion- + p to delta+ + pion-
c 151. pion- + p to delta0 + pion0
c 152. pion- + n to delta- + pion0
c 153. pion- + n to rho- + n
c 154. pion- + n to delta0 + pion-
c 155. pion+ + p to delta++ + pion0
c 156. pion+ + p to delta+ + pion+
c 157. pion+ + p to rho+ + p
c 158. pion+ + n to delta++ + pion-
c 159. pion+ + n to delta0 + pion+
c 160. pion+ + n to delta+ + pion0
c 161. pion+ + n to rho0 + p
c 162. pion+ + n to rho+ + n
c 163. pion0 + p to delta0 + pion+
c 164. pion0 + p to delta++ + pion-
c 165. pion0 + p to rho+ + n
c 166. pion0 + p to rho0 + p
c 167. pion0 + p to delta+ + pion0
c 168. pion0 + n to delta+ + pion-
c 169. pion0 + n to delta- + pion+
c 170. pion0 + n to delta0 + pion0
c 171. pion0 + n to rho0 + n
c 172. pion0 + n to rho- + p
c 173. p + p to delta+ + p
c 174. p + p to delta++ + n
c 175. p + n to delta+ + n
c 176. p + n to delta0 + p
c 177. n + n to delta0 + n
c 178. n + n to delta- + p
c 179. J/psi + n to lamdac + Dba
c 180. J/psi + n to sigmac + Dba
c 181. J/psi + n to sigmac0 + D0ba
c 182. J/psi + p to lamdac + D0ba
c 183. J/psi + p to sigmac + D0ba
c 184. J/psi + p to sigmac++ + Dba
c 185. J/psi + pion+ to D + D*0ba
c 186. J/psi + pion0 to D0 + D*0ba
c 187. J/psi + pion0 to D + D*ba
c 188. J/psi + pion- to D0 + D*ba
c 189. J/psi + rho+ to D + D0ba
c 190. J/psi + rho0 to D0 + D0ba
c 191. J/psi + rho0 to D + Dba
c 192. J/psi + rho- to D0 + Dba
c 193. psi' + n to lamdac + Dba
c 194. psi' + n to sigmac + Dba
c 195. psi' + n to sigmac0 + D0ba
c 196. psi' + p to lamdac + D0ba
c 197. psi' + p to sigmac + D0ba
c 198. psi' + p to sigmac++ + Dba
c 199. psi' + pion+ to D + D*0ba
c 200. psi' + pion0 to D0 + D*0ba
c reverse reactions, after '201'
c 201. pion+ + pion- to k+ + k- (r)
c 202. pion0 + pion0 to k+ + k-(r)
c 203. pion+ + pion0 to k+ + k0-(r)
c 204. pion- + pion0 to k- + k0(r)
c 205. pion+ + pion- to k0 + k0-(r)
c 206. pion0 + pion0 to k0 + k0-(r)
c 207. k+ + sigma+ to pion+ + p
c 208. k+ + sigma- to pion- + p
c 209. k+ + sigma- to pion0 + n
c 210. k+ + sigma0 to pion+ + n
c 211. k+ + sigma0 to pion0 + p
c 212. k+ + lambda0 to pion+ + n
c 213. k+ + lambda0 to pion0 + p
c 214. k+ + sigma+ to pion+ + n
c 215. k+ + sigma+ to pion0 + p
c 216. k0 + sigma- to pion- +n
c 217. k0 + sigma0 to pion- + p
c 218. k0 + sigma0 to pion0 + n
c 219. k0 + lambda0 to pion- + p
c 220. k0 + lambda0 to pion0 + n
c 221. k- + sigma+ba to pion- + pba
c 222. k- + sigma-ba to pion+ + pba
c 223. k- + sigma-ba to pion0 + nba
c 224. k- + sigma0ba to pion- + nba
c 225. k- + sigma0ba to pion0 + pba
c 226. k- + lambda0ba to pion- + nba
c 227. k- + lambda0ba to pion0 + pba
c 228. k0ba + sigma+ba to pion- + nba
c 229. k0ba + sigma+ba to pion0 + pba
c 230. k0- + sigma-ba to pion+ + nba
c 231. k0- + sigma0- to pion+ + pba
c 232. k0- + sigma0- to pion0 + nba
c 233. k0- + lambda0- to pion+ + pba
c 234. k0- + lambda0- to pion0 + nba
c 235. k++ cascade- to pi+ sigma-
c 236. k+ + cascade- to pion- + sigma+
c 237. k+ + cascade- to pion0 + lambda0
c 238. k+ + cascade- to pion0 + sigma0
c 239. k- + cascade-ba to pion+ + sigma+ba
c 240. k- + cascade-ba to pion- + sigma-ba
c 241. k- + cascade-ba to pion0 + lambda0-
c 242. k- + cascade-ba to pion0 + sigma0-
c 243. k0 + cascade- to pion- + lambda0
c 244. k0 + cascade- to pion- + sigma0
c 245. k0 + cascade- to pion0 + sigma-
c 246. k0- + cascade-ba to pion+ + lambda0-
c 247. k0- + cascade-ba to pion+ + sigma0-
c 248. k0- + cascade-ba to pion0 + sigma-ba
c 249. pion+ + sigma- to k- + p
c 250. pion+ + sigma- to k0- + n
c 251. pion+ + sigma0 to k0- + p
c 252. pion+ + lambda0 to k0- + p
c 253. k+ + cascade- to k- + p
c 254. pion- + sigma+ to k- + p
c 255. pion- + sigma+ to k0- + n
c 256. pion- + sigma0 to k- + n
c 257. k0 + cascade- to k- + n
c 258. pion- + lambda0 to k- + n
c 259. pion0 + sigma+ to k0- + p
c 260. pion0 + sigma- to k- + n
c 261. pion0 + sigma0 to k- + p
c 262. pion0 + sigma0 to k0- + n
c 263. pion0 + lambda0 to k- + p
c 264. pion0 + lambda0 to k0- + n
c 265. k+ + cascade- to k0- + n
c 266. pion+ + sigma+ba to k+ + pba
c 267. pion+ + sigma+ba to k0 + nba
c 268. pion+ + sigma0- to k+ + nba
c 269. pion+ + lambda0- to k+ + nba
c 270. k- + cascade-ba to k+ + pba
c 271. pion- + sigma-ba to k+ + pba
c 272. pion- + sigma-ba to k0 + nba
c 273. pion- + sigma0- to k0 + pba
c 274. k0- + cascade-ba to k+ + nba
c 275. pion- + lambda0- to k0 + pba
c 276. pion0 + sigma+- to k0 + pba
c 277. pion0 + sigma-ba to k+ + nba
c 278. pion0 + sigma0- to k+ + pba
c 279. pion0 + sigma0- to k0 + nba
c 280. pion0 + slambda0- to k+ + pba
c 281. pion0 + lambda0- to k0 + nba
c 282. k- + cascade-ba to k0 + nba
c 283. pion+ + cascade- to k- + sigma+
c 284. pion+ + cascade- to k0- + lambda0
c 285. pion+ + cascade- to k0- + sigma0
c 286. pion- + cascade- to k- + sigma-
c 287. pion0 + cascade- to k- + lambda0
c 288. pion0 + cascade- to k- + gigma0