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Hadcas_40.bak.f90
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12315 lines (11599 loc) · 363 KB
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!! Hadcas_40.f90 is a part of the PACIAE event generator.
!! Copyright (C) 2024 PACIAE Group.
!! PACIAE is licensed under the GNU GPL v2 or later, see LICENSE for details.
!! Open source: https://github.com/ArcsaberHep/PACIAE4
!! Author: Ben-Hao Sa, September 2000 - January 2025.
!> This is the program to deal with the hadron cascade (hadronic rescattering).
!! By Ben-Hao at CIAE on 20/09/2000
!! Last updated by An-Ke at UiO on 17/01/2025
subroutine hadcas( time_had, ijkk )
!! Deals with the hadronic rescattering.
!
! It was composed by Ben-Hao Sa on 20/09/2000.
! Its input messages are in 'sa1_h', which plays
! the working block as well.
! Its output messages are in 'sa1_h'.
! If ijkk=1, gives up current event avoiding infinite loop.
! If ijkk=2, no collisions will happen, return.
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
PARAMETER (KSZJ=80000,NSIZE=750000)
common/sa1/kjp21,nonsa1,bp,iii,neve,nout,nosc
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/ctllist_h/nctl,noinel(1000),nctl0,noel
common/ctllist_t/ lc(nsize,5), tc(nsize), tw(nsize)
common/sa24/adj1(40),nnstop,non24,zstop
common/para_h1/ para(20)
! ifram = 0 for fixed target, = 1 for collider
! cspipi (fm^2): total cross section of pion + pion
! cspin (fm^2): total cross section of pion + nucleon
! cskn (fm^2): total cross section of Kaon + nucleon
! csnn (fm^2): total cross section of N + N
! cspsn: total cross section of J/psi (psi') + N
! cspsm: total cross section of J/psi (psi') + meson
! rcsit: ratio of inelastic to total cross section
! kfmax: the maximum # of particles with given flavor code
! kfaco(i): flavor code of i-th particle among kfmax
! numb(i): order # of last particle of particles with same flavor of
! kfaco(i) in particle list
! disbe(i,j): allowable minimum approaching distance between particles
! kfaco(i) & kfaco(j)
! cspipiKK (fm^2): cross section of pion + pion to Kaon + Kaon
! edipi: largest interaction distance between two pions.
! epin: largest interaction distance between pion and nucleon.
! ekn: largest interaction distance between Kaon and nucleon.
! ecsnn: largest interaction distance between two nucleons.
! t0: average proper formation time at rest.
! ddt: time accuracy
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! 0. is hard core distance between two pions
! 0.5 is hard core distance between two nucleons
! 0. is hard core distance between pion and nucleon
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! tau(i) : formation time of particle i.
! ishp(i)=1 if i-th particle inside the simulated volume
! =0 if i-th particle outside the simulated volume
! isinel(i) = 0 without i-th inelastic process
! = 1 with i-th inelastic process
! lc(i,1) and lc(i,2) are, respectively, line # in particle
! list of the colliding particles of i-th collision pair
! lc(i,3) and lc(i,4) are the flavor codes of scattered particles
! of i-th collision pair
! lc(i,5) identifies the different inelastic process,
! lc(i,5)=592, not used
! tc(i): collision time of i-th colliding pair
! tw(i): cross section ratio of (i-th inelas.)/tot
! pio : 3.141592653589793D0
! nctl: number of collision pairs in the current collision list
! nctl0: number of collision pairs in last collision list
! noinel(i): statistics of the occurring of i-th inelastic process
! noel: statistics of the occurring of elastic process
time = time_had
ijkk = 0
! Initialization.
call sysini_h
nctl = 0
lc = 0
! tc = 0D0
! tw = 0D0
numb = 0
! Assume the time origin is 0.
do i=1,nsa,1
vsa(i,4) = 0D0
tau(i) = vsa(i,4)
end do
noel = 0
noinel = 0
!-------------------------------------------------------------------------------
!----------------------- Interaction Volume Checking -----------------------
dpmax = adj1(27)
drmax = para(10)
do i1=1,nsa,1
ishp(i1) = 0
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 <= 1D-28 ) pnnm = 1D-28
if( pnnm > 1D28 ) cycle
pnnm = SQRT(pnnm)
rnnm = rnn1*rnn1 + rnn2*rnn2 + rnn3*rnn3
if( rnnm <= 1D-28 ) rnnm = 1D-28
if( rnnm > 1D28 ) cycle
rnnm = SQRT(rnnm)
if( pnnm <= dpmax .AND. pnn4 <= dpmax &
.AND. rnnm <= drmax )then
ishp(i1) = 1
end if
end do
!----------------------- Interaction Volume Checking -----------------------
!-------------------------------------------------------------------------------
! Changes K0S, K0L to K0, K0bar.
do j=1,nsa,1
kf = ksa(j,2)
if(kf == 130 .OR. kf == 310)then
rrlu = PYR(1)
ksa(j,2) = 311
if(rrlu > 0.5D0) ksa(j,2) = -311
end if
end do
! Filters out particles wanted to study and make in order of proton,
! neutron, ...
! Initial particle list is comprised of the arrays in common block
! 'sa1_h', 'tau' and 'ishp' in 'sa8_h', and 'numb' in 'sa9_h'
call filt_h
! Calculates position of center of mass of the system. distance of a
! particle from this cms is used to check whether it is freezes out
! or not
call copl_h(time)
! Creates the initial collision list
call ctlcre_h(time)
! No collisions will happen.
if( nctl <= 0 )then
ijkk = 2
return
end if
! Administrates the hadron rescattering.
call scat_h( time, ijkk, iii )
if(ijkk == 1) return
! If ijkk=1 (infinite loops), give up the event.
time_had = time
! Changes K0, K0bar to K0L and K0S.
do j=1,nsa,1
kf = ksa(j,2)
if(kf == 311 .or. kf == -311)then
rrlu = pyr(1)
ksa(j,2) = 130
if(rrlu > 0.5D0) ksa(j,2) = 310
end if
end do
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine sysini_h
!! Gives initial values to the quantities needed in hadron rescattering.
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
COMMON/PYCIDAT1/KFACOT(100),DISDET(100),ISINELT(1000)
COMMON/PYCIDAT2/KFMAXT,NONT2,PARAM(20),WEIGH(1000)
common/sa9_h/kfmax,kfaco(100),numb(100),non9,disbe(100,100)
common/sa10/csnn_p,cspin_p,cskn_p,cspipi_p,cspsn_p,cspsm_p, &
rcsit_p,ifram_p,iabsb_p,iabsm_p,i_sigma_AQM_p,ajpsi_p,csspn_p, &
csspm_p,csen_p
common/sa10_h/csnn,cspin,cskn,cspipi,cspsn,cspsm,rcsit,ifram, &
iabsb,iabsm,i_sigma_AQM,csspn,csspm
common/sa20_h/t0,cspipiKK,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm, &
rnt,rnp,ecsspn,ecsspm
common/sa25/i_inel_proc,i_time_shower,i_diquark,ipad25,para1_1,para1_2
common/sa24/adj1(40),nnstop,non24,zstop
common/syspar_h/pio
common/count_h/isinel(1000)
! For cross sections of hh collisions etc.
common/para_h1/ para(20)
pio = 3.141592653589793D0
PARAM(1) = para1_2
PARAM(5) = para(5)
! cross sections are given in fm^2
csnn = PARAM(1)*0.1D0
cspin = PARAM(2)*0.1D0
cskn = PARAM(3)*0.1D0
cspipi = PARAM(4)*0.1D0
cspipiKK = PARAM(5)*0.1D0
cspsn = PARAM(13)*0.1D0
cspsm = PARAM(14)*0.1D0
csspn = PARAM(15)*0.1D0
csspm = PARAM(16)*0.1D0
iabsb = 1
iabsm = 1
! PARAM(1) : total cross-section of nucleon + nucleon (in mb)
! PARAM(5) : cross-section of pi + pi -> K + Kbar (in mb)
! csnn : total cross section of nucleon + nucleon
! 1 mb = 0.1 fm^2
! cspin : total cross section of pion + nucleon
! cskn : total cross section of Kaon + nucleon
! cspipi: total cross section of pion + pion
! cspsn : total cross section of J/psi (psi') + nucleon
! cspsm : total cross section of J/psi (psi') + meson
! iabsb = 0 : without J/psi (psi') + baryon (nucleon)
! = 1 : with J/psi (psi') + baryon (nucleon)
! iabsm = 0 : without J/psi (psi') + meson
! = 1 : with J/psi (psi') + meson
! i_sigma_AQM: = 1, uses the input total cross sections of piN, KN, pi+pi,
! Jpsi(psi')+N, Jpsi(psi')+N, Jpsi(psi')+pi/rho,
! and AQM cross sections for D+N/pi/rho in hadcas.
! Ignores the channels which are not well defined.
! : = 2, uses the input cross sections of piN, KN, ... ,
! AQM cross sections for D+N/pi/rho and the channels
! which are not well defined (treated as elastic).
! : = 3, uses AQM cross sections of piN, KN,... and D+N/pi/rho.
! Ignores the channels which are not well defined.
! : = 4, uses AQM cross sections of piN, KN, ..., D+N/pi/rho,
! and the channels which are not well defined (treated
! as elastic).
! Uses the total cross sections from AQM (additive quark model,
! arXiv:2203.11601)
i_sigma_AQM = i_sigma_AQM_p
if( i_sigma_AQM == 3 .OR. i_sigma_AQM == 4 )then
sigma_NN_tot = para1_2
cspin = sigma_AQM( 211, 2212, sigma_NN_tot ) * 0.1D0
cskn = sigma_AQM( 321, 2212, sigma_NN_tot ) * 0.1D0
cspipi = sigma_AQM( 211, 211, sigma_NN_tot ) * 0.1D0
cspsn = sigma_AQM( 443, 2212, sigma_NN_tot ) * 0.1D0
cspsm = sigma_AQM( 443, 221, sigma_NN_tot ) * 0.1D0
csspn = cspsn
csspm = cspsm
end if
! largest interaction distance of two colliding particles.
edipi = sqrt(cspipi / pio)
epin = sqrt(cspin / pio)
ekn = sqrt(cskn / pio)
ecsnn = sqrt(csnn / pio)
ecspsn = sqrt(cspsn / pio)
ecspsm = sqrt(cspsm / pio)
ecsspn = sqrt(csspn / pio)
ecsspm = sqrt(csspm / pio)
rcsit = PARAM(6)
t0 = PARAM(7)
! dep = PARAM(9)
! ddt = PARAM(8)
ddt = adj1(11)
! rao = PARAM(10)
kfmax = KFMAXT
kfaco = KFACOT
isinel = ISINELT
disbe = 0D0
do j=1,kfmax,1
disbe(1,j) = DISDET(j)
disbe(2,j) = DISDET(j)
disbe(3,j) = DISDET(j)
disbe(4,j) = DISDET(j)
! disbe(26,j) = DISDET(j)
! disbe(27,j) = DISDET(j)
! disbe(28,j) = DISDET(j)
! disbe(29,j) = DISDET(j)
end do
do i=1,99,1
do j = i+1, 100, 1
disbe(j,i) = disbe(i,j)
end do
end do
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine filt_h
!! Filters out desired particles and make them in order of
! 1 2 3 4 5 6 7 8 9 10
! 0 proton, neutron, pbar-, nbar, pi+, pi-, pi0, K-, Kbar0, Sigma0,
! 1 Sigma-, Sigma+, Sigmabar0, Sigmabar+, Sigmabar-, Lambda0, Lambdabar0, K0, K+, Xi-,
! 2 Xibar+, Xi0, Xibar0, Omega-, Omegabar+, Delta-, Delta0, Delta+, Delta++, rho+,
! 3 rho-, rho0, J/psi, psi', Deltabar+, Deltabar0, Deltabar-, Deltabar--, D+, D-,
! 4 D0, Dbar0, D*+, D*-, D*0, D*bar0, Lambda_c+, Lambda_cbar-, D_s+, D_s-,
! 5 D*_s+, D*_s-, K*+, K*-, K*0, K*bar0, Upsilon, Upsilon', chi_0c, chi_1c,
! 6 chi_2c, Sigma_c0, Sigma_c+, Sigma_c++, Sigma_cbar0, Sigma_cbar+, Sigma_cbar++, omega, B0, B0bar,
! 7 B+, B-, B_s0, B_sbar0, B_c+, B_c-, B*0, B*bar0, B*+, B*-,
! 8 B*_s0, B*_sbar0, B*_c+, B*_c-, Lambda_b0, Lambda_bbar0, Sigma_b0, Sigma_bbar0, Sigma_b-, Sigma_bbar+,
! 9 Sigma_b+, Sigma_bbar-, 8*0
! (92 particle)
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
PARAMETER (KSZJ=80000)
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)
iiii = 0
jjjj = 0
do i=1,kfmax,1
kf = kfaco(i)
do j = iiii+1, nsa, 1
call ord_h( jjjj, j, kf )
end do
iiii = jjjj
numb(i) = jjjj
end do
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine ord_h(ipi,j,kf)
!! Makes in order for particles with flavor code kf.
! j : the particle wanted to order
! kf: flavor code of j-th particle
! ipi : j-th particle should order after ipi
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
PARAMETER (KSZJ=80000)
common/sa1_h/nsa,non1,ksa(kszj,5),psa(kszj,5),vsa(kszj,5)
dimension kk(5),pp(5),vv(5)
ik = ksa(j,2)
if(ik == kf)then
ipi = ipi + 1
do jj=1,5,1
kk(jj) = ksa(ipi,jj)
pp(jj) = psa(ipi,jj)
vv(jj) = vsa(ipi,jj)
end do
do jj=1,5,1
ksa(ipi,jj) = ksa(j,jj)
psa(ipi,jj) = psa(j,jj)
vsa(ipi,jj) = vsa(j,jj)
end do
do jj=1,5,1
ksa(j,jj) = kk(jj)
psa(j,jj) = pp(jj)
vsa(j,jj) = vv(jj)
end do
end if
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine copl_h(time)
!! Calculate position of center of mass of the non-freeze-out system
!! distance of a particle from this cms is used to checke whether
!! it freezes out or not.
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
PARAMETER (KSZJ=80000)
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)
tt = time
coor = 0D0
samass = 0D0
do ii=1,nsa,1
! if( tau(ii) > tt ) cycle
if( ishp(ii) == 0 ) cycle
KF = ksa(ii,2)
damass = PYMASS( KF )
samass = samass + damass
do jj=1,3,1
coor(jj) = coor(jj) + damass * vsa(ii,jj)
end do
end do
! 0.14 : pion mass.
coor = coor / MAX( 0.14D0, samass )
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine ctlcre_h(time)
!! Creates the initial collision list.
! The time origin is assumed as 0.
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
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,cspipiKK,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm, &
rnt,rnp,ecsspn,ecsspm
common/ctllist_h/nctl,noinel(1000),nctl0,noel
common/ctllist_t/ lc(nsize,5), tc(nsize), tw(nsize)
time_resolution = ddt
n_max_considered = numb(kfmax)
nctl = 1
do i = 1, nsa-1, 1
if( i > n_max_considered ) cycle
do j = i+1, nsa, 1
if( j > n_max_considered ) cycle
iflag = 0
call rsfilt_h( i, j, iflag )
if( iflag == 0 ) cycle
tc(nctl) = 0D0
tw(nctl) = 0D0
call tcolij_h( i, j, time, nctl )
tci = tc(nctl)
if( tci <= 1D-7 ) cycle
do jj = 1, nctl-1, 1
tcj = tc( jj )
if( ABS(tcj - tci) < time_resolution )then
nctl = nctl - 1
exit
end if
end do
nctl = nctl + 1
end do
end do
nctl = nctl - 1
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine scat_h( time, ijkk, iii )
!! Administrates the hadronic rescattering.
! iii: the run number
! if ijkk=1 (infinite loop) give up the event
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
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,i_sigma_AQM,csspn,csspm
common/sa19_h/coor(3)
common/sa20_h/t0,cspipiKK,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm, &
rnt,rnp,ecsspn,ecsspm
common/ctllist_h/nctl,noinel(1000),nctl0,noel
common/ctllist_t/ lc(nsize,5), tc(nsize), tw(nsize)
dimension pi(4),pj(4),pii(4),pjj(4),b(3)
integer winel
ijkk = 0
nctl0 = nctl
iiii = 1
10 if(iiii > 1) call copl_h(time)
! Finds out the binary colli. with minimum collsion time.
call find_h( icp, tcp )
if(icp == 0) return
! icp=0 means the collision list is empty.
if( tcp > 1D10 )then
do i1 = icp+1, nctl, 1
do j1=1,5,1
lc( i1-1, j1 ) = lc(i1,j1)
end do
tc( i1-1 ) = tc(i1)
tw( i1-1 ) = tw(i1)
enddo
nctl = nctl - 1
goto 10
end if
time0 = time
l = lc(icp,1)
l1 = lc(icp,2)
kfa = ksa(l,2)
kfb = ksa(l1,2)
! Records this collision time.
time = tcp
! Performs classical Newton motion in Lab. system.
call his_h( time, istop )
if(istop == 1) return
! istop=1 means all particles have get out of considered volume.
pi(4) = psa(l,4)
pj(4) = psa(l1,4)
do i=1,3,1
pi(i) = psa(l,i)
pj(i) = psa(l1,i)
b(i) = ( pi(i) + pj(i) ) / ( pi(4) + pj(4) )
end do
! Boosts to CMS frame of the colliding pair.
ilo = 0
call lorntz( ilo, b, pi, pj )
ss = pi(4) + pj(4)
ww = rcsit
! The cross section ratio of (ela.)/tot = 1 - rcsit.
rrlu = PYR(1)
winel = 0
! inela.
if( rrlu <= ww )then
winel = 1
call coinel( l,l1, ss, b, pi,pj, icp, pii,pjj, winel, ik3,ik4 )
! If winel=0 the inelastic reaction has not really happened.
! If winel=1 inelastic collision happened, ik3 and ik4 are
! flavors of the scattered particles, pii and pjj are four-momentum of
! scattered particles in Lab frame, the two colliding particles are
! still with line numbers of l and l1 in the particle list
end if
if( winel /= 0 )then
! Treats the inelastic collision.
icp5 = lc(icp,5)
noinel(icp5) = noinel(icp5) + 1
! Updates particle list after inelastic collision
! and truncates collision list correspondingly.
call updpli( l,l1, icp, pii, pjj, time, icp5 )
l = lc(icp,1)
l1 = lc(icp,2)
! l and l1 are now the line numbers of scattered particles in
! particle list.
else
! Calculates four-momentum of scattered particles after elastic
! collistion (pi and pj in CMS frame).
call coelas_h(l,l1,ss,pi,pj)
! Updates particle list for elastic scattering, pi and pj have been
! boosted back to the Lab frame.
call updple_h(l,l1,b,pi,pj)
noel = noel + 1
end if
! Updates the collision list.
call updatl_h(l,l1,time)
!#TODO(Lei20241012): particle decay in the transport process.
! if( nctl <= 1 ) goto 300
! deltt = time - time0
! deal with particle decay in the transport processes
! call decay( time, deltt )
iiii = iiii + 1
if( iiii > 100*(nctl0) )then
write(*,*) "infinite loop may have happened in" &
// "subroutine scat iii=", iii
iii = iii - 1
! If ijkk=1 (infinite loop), give up the event.
ijkk = 1
return
end if
goto 10
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine find_h(icp,tcp)
!! Finds out the binary collision with minimum collision time.
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
PARAMETER(NSIZE=750000)
common/ctllist_h/nctl,noinel(1000),nctl0,noel
common/ctllist_t/ lc(nsize,5), tc(nsize), tw(nsize)
icp = 0
tcp = 20000D0
do i=1,nctl,1
if( tc(i) <= 1D-7 ) cycle
if( tcp < tc(i) ) cycle
icp = i
tcp = tc(i)
end do
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine his_h(t1,istop)
!! Classical Newton motion in Lab. system.
! istop=1 means all particles have get out of considered volume.
IMPLICIT DOUBLE PRECISION(A-H, O-Z)
IMPLICIT INTEGER(I-N)
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,cspipiKK,dep,ddt,edipi,epin,ecsnn,ekn,ecspsn,ecspsm, &
rnt,rnp,ecsspn,ecsspm
common/sa24/adj1(40),nnstop,non24,zstop
common/ctllist_h/nctl,noinel(1000),nctl0,noel
common/ctllist_t/ lc(nsize,5), tc(nsize), tw(nsize)
common/para_h1/ para(20)
istop = 0
i_n = 0
r0 = para(10)
do i=1,nsa,1
! do move particles which have not been produced
! if( t1 <= tau(i) ) cycle
if( ishp(i) == 0 )then
i_n = i_n + 1
cycle
end if
aa = 0D0
pp4 = psa(i,4)
do j=1,3,1
vp = psa(i,j) / pp4
vsa(i,j) = vsa(i,j) + vp * ( t1 - vsa(i,4) )
aa = aa + ( vsa(i,j) - coor(j) )**2
end do
aa = SQRT(aa)
if(aa < r0)then
vsa(i,4) = t1
else
! if freeze-out already, deduct the distance between the last and
! current collisions
do j=1,3,1
vp = psa(i,j) / pp4
vsa(i,j) = vsa(i,j) - vp * ( t1 - vsa(i,4) )
end do
ishp(i) = 0
do il=1,nctl,1
if( lc(il,1) == i .OR. lc(il,2) == i ) tc(il) = 0D0
end do
end if
end do
if( i_n == nsa ) istop = 1
return
end
!ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
subroutine coinel( l,l1, ss,b, pi,pj, icp, pii,pjj, winel, ik1,ik2 )
!! Treats the inelastic collision
!
! The inelastic processes considered are:
! strangeness production reactions:
! 1. pion+ + pion- to k+ + k-
! 2. pion+ + pion- to k0 + k0-
! 3. pion+ + pion0 to k+ + k0-
! 4. pion- + pion0 to k- + k0
! 5. pion0 + pion0 to k+ + k-
! 6. pion0 + pion0 to k0 + k0-
! 7. pion+ + p to k+ + sigma+
! 8. pion+ + n to k+ + sigma0
! 9. pion+ + n to k+ + lambda
! 10. pion+ + n to k0 + sigma+
! 11. pion- + p to k+ + sigma-
! 12. pion- + p to k0 + lambda
! 13. pion- + p to k0 + sigma0
! 14. pion- + n to k0 + sigma-
! 15. pion0 + p to k+ + sigma0
! 16. pion0 + p to k+ + lambda
! 17. pion0 + p to k0 + sigma+
! 18. pion0 + n to k+ + sigma-
! 19. pion0 + n to k0 + lambda
! 20. pion0 + n to k0 + sigma0
! 21. pion+ + pba to k0- + lambdaba
! 22. pion+ + pba to k0- + sigma0ba
! 23. pion+ + pba to k- + sigma-ba
! 24. pion+ + nba to k0- + sigma-ba
! 25. pion- + pba to k- + sigma+ba
! 26. pion- + nba to k- + lambdaba
! 27. pion- + nba to k- + sigma0ba
! 28. pion- + nba to k0- + sigma+ba
! 29. pion0 + pba to k- + lambdaba
! 30. pion0 + pba to k- + sigma0ba
! 31. pion0 + pba to k0- + sigma+ba
! 32. pion0 + nba to k- + sigma-ba
! 33. pion0 + nba to k0- + lambdaba
! 34. pion0 + nba to k0- + sigma0ba
! 35. pion+ + sigma- to k+ + cascade-
! 36. pion- + lambda to k0 + cascade-
! 37. pion- + sigma+ to k+ + cascade-
! 38. pion- + sigma0 to k0 + cascade-
! 39. pion0 + lambda to k+ + cascade-
! 40. pion0 + sigma- to k0 + cascade-
! 41. pion0 + sigma0 to k+ + cascade-
! 42. pion+ + lambdaba to k0- + cascade-ba
! 43. pion+ + sigma+ba to k- + cascade-ba
! 44. pion+ + sigma0ba to k0- + cascade-ba
! 45. pion- + sigma-ba to k- + cascade-ba
! 46. pion0 + lambdaba to k- + cascade-ba
! 47. pion0 + sigma-ba to k0- + cascade-ba
! 48. pion0 + sigma0ba to k- + cascade-ba
! strangeness exchange reactions:
! 49. k- + p to pion0 + lambda
! 50. k- + p to pion0 + sigma0
! 51. k- + p to pion- + sigma+
! 52. k- + p to pion+ + sigma-
! 53. k- + p to k+ + cascade- (strangeness production)
! 54. k- + n to pion- + sigma0
! 55. k- + n to pion- + lambda
! 56. k- + n to pion0 + sigma-
! 57. k- + n to k0 + cascade- (strangeness production)
! 58. k0- + p to pion+ + lambda
! 59. k0- + p to pion+ + sigma0
! 60. k0- + p to pion0 + sigma+
! 61. k0- + n to pion+ + sigma-
! 62. k0- + n to pion- + sigma+
! 63. k0- + n to pion0 + sigma0
! 64. k0- + n to pion0 + lambda
! 65. k0- + n to k+ + cascade- (strangeness production)
! 66. k+ + p- to pion0 + lambda-
! 67. k+ + p- to pion0 + sigma0-
! 68. k+ + p- to pion+ + sigma+ba
! 69. k+ + p- to pion- + sigma-ba
! 70. k+ + p- to k- + cascade-ba (strangeness production)
! 71. k+ + n- to pion+ + sigma0-
! 72. k+ + n- to pion+ + lambda-
! 73. k+ + n- to pion0 + sigma-ba
! 74. k+ + n- to k0- + cascade-ba(strangeness production)
! 75. k0 + p- to pion- + lambda-
! 76. k0 + p- to pion- + sigma0-
! 77. k0 + p- to pion0 + sigma+ba
! 78. k0 + n- to pion- + sigma-ba
! 79. k0 + n- to pion+ + sigma+ba
! 80. k0 + n- to pion0 + sigma0-
! 81. k0 + n- to pion0 + lambda-
! 82. k0 + n- to k- + cascade-ba (strangeness production)
! 83. k- + lambda to pion0 + cascade-
! 84. k- + sigma+ to pion+ + cascade-
! 85. k- + sigma- to pion- + cascade-
! 86. k- + sigma0 to pion0 + cascade-
! 87. k0- + lambda to pion+ + cascade-
! 88. k0- + sigma0 to pion+ + cascade-
! 89. k0- + sigma- to pion0 + cascade-
! 90. k+ + lambda- to pion0 + cascade-ba
! 91. k+ + sigma+ba to pion- + cascade-ba
! 92. k+ + sigma-ba to pion+ + cascade-ba
! 93. k+ + sigma0- to pion0 + cascade-ba
! 94. k0 + lambda- to pion- + cascade-ba
! 95. k0 + sigma0- to pion- + cascade-ba
! 96. k0 + sigma-ba to pion0 + cascade-ba
! 97. pion+ + sigma- to k0 + cascade0
! 98. pion+ + sigma0 to k+ + cascade0
! 99. pion+ + lambda0 to k+ + cascade0
! 100. pion- + sigma+ to k0 + cascade0
! 101. pion0 + sigma+ to k+ + cascade0
! 102. pion0 + sigma0 to k0 + cascade0
! 103. pion0 + lambda to k0 + cascade0
! 104. pion+ + sigma+ba to k0- + cascade0-
! 105. pion- + sigma-ba to k0- + cascade0-
! 106. pion- + sigma0- to k- + cascade0-
! 107. pion- + lambda- to k- + cascade0-
! 108. pion0 + sigma+- to k- + cascade0-
! 109. pion0 + sigma0- to k0- + cascade0-
! 110. pion0 + lambda- to k0- + cascade0-
! 111. k- + sigma+ to pion0 + cascade0
! 112. k- + sigma0 to pion0 + cascade-
! 113. k- + lambda to pion- + cascade0
! 114. k0- + sigma+ to pion+ + cascade0
! 115. k0- + sigma- to pion- + cascade0
! 116. k0- + sigma0 to pion0 + cascade0
! 117. k0- + lambda to pion0 + cascade0
! 118. k+ + sigma+ba to pion0 + cascade0-
! 119. k+ + sigma0- to pion+ + cascade0-
! 120. k+ + lambda- to pion+ + cascade0-
! 121. k+ + cascade-ba to pion+ + Omega-ba
! 122. k0 + sigma-ba to pion+ + cascade0ba
! 123. k0 + sigma0- to pion0 + cascade0-
! 124. k0 + lambda- to pion0 + cascade0ba
! 125. k- + p to k0 + cascade0
! 126. k0- + p to k+ + cascade0
! 127. k0- + n to k0 + cascade0
! 128. k+ + p- to k0- + cascade0ba
! 129. k0 + p- to k- + cascade0-
! 130. k0 + n- to k0- + cascade0-
! 131. pion+ + cascade- to k+ + Omega-
! 132. pion0 + cascade- to k0 + Omega-
! 133. pion- + cascade-ba to k- + Omega-ba
! 134. pion0 + cascade-ba to k0- + Omega-ba
! 135. pion- + cascade0 to k0 + Omega-
! 136. pion0 + cascade0 to k+ + Omega-
! 137. pion+ + cascade0- to k0- + Omega-ba
! 138. pion0 + cascade0- to k- + Omega-ba
! 139. k- + cascade- to pion- + Omega-
! 140. k0- + cascade- to pion0 + Omega-
! 141. k- + cascade0 to pion0 + Omega-
! 142. k0- + cascade0 to pion+ + Omega-
! 143. k+ + cascade-ba to pion+ + Omega-ba
! 144. k0 + cascade-ba to pion0 + Omega-ba
! 145. k+ + cascade0- to pion0 + Omega-ba
! 146. k0 + cascade0- to pion- + Omega-ba
! 147. pion- + p to delta- + pion+
! 148. pion- + p to rho0 + n
! 149. pion- + p to rho- + p
! 150. pion- + p to delta+ + pion-
! 151. pion- + p to delta0 + pion0
! 152. pion- + n to delta- + pion0
! 153. pion- + n to rho- + n
! 154. pion- + n to delta0 + pion-
! 155. pion+ + p to delta++ + pion0
! 156. pion+ + p to delta+ + pion+
! 157. pion+ + p to rho+ + p
! 158. pion+ + n to delta++ + pion-
! 159. pion+ + n to delta0 + pion+
! 160. pion+ + n to delta+ + pion0
! 161. pion+ + n to rho0 + p
! 162. pion+ + n to rho+ + n
! 163. pion0 + p to delta0 + pion+
! 164. pion0 + p to delta++ + pion-
! 165. pion0 + p to rho+ + n
! 166. pion0 + p to rho0 + p
! 167. pion0 + p to delta+ + pion0
! 168. pion0 + n to delta+ + pion-
! 169. pion0 + n to delta- + pion+
! 170. pion0 + n to delta0 + pion0
! 171. pion0 + n to rho0 + n
! 172. pion0 + n to rho- + p
! 173. p + p to delta+ + p
! 174. p + p to delta++ + n
! 175. p + n to delta+ + n
! 176. p + n to delta0 + p
! 177. n + n to delta0 + n
! 178. n + n to delta- + p
! 179. J/psi + n to lamdac + Dba
! 180. J/psi + n to sigmac + Dba
! 181. J/psi + n to sigmac0 + D0ba
! 182. J/psi + p to lamdac + D0ba
! 183. J/psi + p to sigmac + D0ba
! 184. J/psi + p to sigmac++ + Dba
! 185. J/psi + pion+ to D + D*0ba
! 186. J/psi + pion0 to D0 + D*0ba
! 187. J/psi + pion0 to D + D*ba
! 188. J/psi + pion- to D0 + D*ba
! 189. J/psi + rho+ to D + D0ba
! 190. J/psi + rho0 to D0 + D0ba
! 191. J/psi + rho0 to D + Dba
! 192. J/psi + rho- to D0 + Dba
! 193. psi' + n to lamdac + Dba
! 194. psi' + n to sigmac + Dba
! 195. psi' + n to sigmac0 + D0ba
! 196. psi' + p to lamdac + D0ba
! 197. psi' + p to sigmac + D0ba
! 198. psi' + p to sigmac++ + Dba
! 199. psi' + pion+ to D + D*0ba
! 200. psi' + pion0 to D0 + D*0ba
! reverse reactions, after '201'
! 201. pion+ + pion- to k+ + k- (r)
! 202. pion0 + pion0 to k+ + k-(r)
! 203. pion+ + pion0 to k+ + k0-(r)
! 204. pion- + pion0 to k- + k0(r)
! 205. pion+ + pion- to k0 + k0-(r)
! 206. pion0 + pion0 to k0 + k0-(r)
! 207. k+ + sigma+ to pion+ + p
! 208. k+ + sigma- to pion- + p
! 209. k+ + sigma- to pion0 + n
! 210. k+ + sigma0 to pion+ + n
! 211. k+ + sigma0 to pion0 + p
! 212. k+ + lambda0 to pion+ + n
! 213. k+ + lambda0 to pion0 + p
! 214. k+ + sigma+ to pion+ + n
! 215. k+ + sigma+ to pion0 + p
! 216. k0 + sigma- to pion- +n
! 217. k0 + sigma0 to pion- + p
! 218. k0 + sigma0 to pion0 + n
! 219. k0 + lambda0 to pion- + p
! 220. k0 + lambda0 to pion0 + n
! 221. k- + sigma+ba to pion- + pba
! 222. k- + sigma-ba to pion+ + pba
! 223. k- + sigma-ba to pion0 + nba
! 224. k- + sigma0ba to pion- + nba
! 225. k- + sigma0ba to pion0 + pba
! 226. k- + lambda0ba to pion- + nba
! 227. k- + lambda0ba to pion0 + pba
! 228. k0ba + sigma+ba to pion- + nba
! 229. k0ba + sigma+ba to pion0 + pba
! 230. k0- + sigma-ba to pion+ + nba
! 231. k0- + sigma0- to pion+ + pba
! 232. k0- + sigma0- to pion0 + nba
! 233. k0- + lambda0- to pion+ + pba
! 234. k0- + lambda0- to pion0 + nba
! 235. k++ cascade- to pi+ sigma-
! 236. k+ + cascade- to pion- + sigma+
! 237. k+ + cascade- to pion0 + lambda0
! 238. k+ + cascade- to pion0 + sigma0
! 239. k- + cascade-ba to pion+ + sigma+ba
! 240. k- + cascade-ba to pion- + sigma-ba
! 241. k- + cascade-ba to pion0 + lambda0-
! 242. k- + cascade-ba to pion0 + sigma0-
! 243. k0 + cascade- to pion- + lambda0
! 244. k0 + cascade- to pion- + sigma0
! 245. k0 + cascade- to pion0 + sigma-
! 246. k0- + cascade-ba to pion+ + lambda0-
! 247. k0- + cascade-ba to pion+ + sigma0-
! 248. k0- + cascade-ba to pion0 + sigma-ba
! 249. pion+ + sigma- to k- + p
! 250. pion+ + sigma- to k0- + n
! 251. pion+ + sigma0 to k0- + p
! 252. pion+ + lambda0 to k0- + p
! 253. k+ + cascade- to k- + p
! 254. pion- + sigma+ to k- + p
! 255. pion- + sigma+ to k0- + n
! 256. pion- + sigma0 to k- + n
! 257. k0 + cascade- to k- + n
! 258. pion- + lambda0 to k- + n
! 259. pion0 + sigma+ to k0- + p
! 260. pion0 + sigma- to k- + n
! 261. pion0 + sigma0 to k- + p
! 262. pion0 + sigma0 to k0- + n
! 263. pion0 + lambda0 to k- + p
! 264. pion0 + lambda0 to k0- + n
! 265. k+ + cascade- to k0- + n
! 266. pion+ + sigma+ba to k+ + pba
! 267. pion+ + sigma+ba to k0 + nba
! 268. pion+ + sigma0- to k+ + nba
! 269. pion+ + lambda0- to k+ + nba
! 270. k- + cascade-ba to k+ + pba
! 271. pion- + sigma-ba to k+ + pba
! 272. pion- + sigma-ba to k0 + nba
! 273. pion- + sigma0- to k0 + pba
! 274. k0- + cascade-ba to k+ + nba
! 275. pion- + lambda0- to k0 + pba
! 276. pion0 + sigma+- to k0 + pba
! 277. pion0 + sigma-ba to k+ + nba
! 278. pion0 + sigma0- to k+ + pba
! 279. pion0 + sigma0- to k0 + nba
! 280. pion0 + slambda0- to k+ + pba
! 281. pion0 + lambda0- to k0 + nba
! 282. k- + cascade-ba to k0 + nba
! 283. pion+ + cascade- to k- + sigma+
! 284. pion+ + cascade- to k0- + lambda0
! 285. pion+ + cascade- to k0- + sigma0
! 286. pion- + cascade- to k- + sigma-
! 287. pion0 + cascade- to k- + lambda0
! 288. pion0 + cascade- to k- + gigma0
! 289. pion0 + cascade- to k0- + sigma-
! 290. pion+ + cascade-ba to k+ + sigma-ba
! 291. pion- + cascade-ba to k+ + sigma+-
! 292. pion- + cascade-ba to k0 + lambda0-
! 293. pion- + cascade-ba to k0 + sigma0-
! 294. pion0 + cascade-ba to k+ + lambda0-
! 295. pion0 + cascade-ba to k+ + gigma0-
! 296. pion0 + cascade-ba to k0 + sigma-ba
! 297. k0 + cascade0 to pion+ + sigma-
! 298. k+ + cascade0 to pion+ + sigma0
! 299. k+ + cascade0 to pion+ + lambda
! 300. k0 + cascade0 to pion- + sigma+
! 301. k+ + cascade0 to pion0 + sigma+
! 302. k0 + cascade0 to pion0 + sigma0
! 303. k0 + cascade0 to pion0 + lambda