/*
$Log$
+Revision 1.30 2001/10/21 18:35:56 hristov
+Several pointers were set to zero in the default constructors to avoid memory management problems
+
+Revision 1.29 2001/10/15 08:12:24 morsch
+- Vertex smearing with truncated gaussian.
+- Store triggered jet info before and after final state radiation into mc-heade
+
+Revision 1.28 2001/10/08 11:55:25 morsch
+Store 4-momenta of trigegred jets in event header.
+Possibility to switch of initial and final state radiation.
+
+Revision 1.27 2001/10/08 07:13:14 morsch
+Add setter for minimum transverse momentum of triggered jet.
+
+Revision 1.26 2001/10/04 08:12:24 morsch
+Redefinition of stable condition.
+
+Revision 1.25 2001/07/27 17:09:36 morsch
+Use local SetTrack, KeepTrack and SetHighWaterMark methods
+to delegate either to local stack or to stack owned by AliRun.
+(Piotr Skowronski, A.M.)
+
+Revision 1.24 2001/07/20 09:34:56 morsch
+Count the number of spectator neutrons and protons and add information
+to the event header. (Chiara Oppedisano)
+
+Revision 1.23 2001/07/13 17:30:22 morsch
+Derive from AliGenMC.
+
+Revision 1.22 2001/06/11 13:09:23 morsch
+- Store cross-Section and number of binary collisions as a function of impact parameter
+- Pass AliGenHijingEventHeader to gAlice.
+
+Revision 1.21 2001/02/28 17:35:24 morsch
+Consider elastic interactions (ks = 1 and ks = 11) as spectator (Chiara Oppedisano)
+
+Revision 1.20 2001/02/14 15:50:40 hristov
+The last particle in event marked using SetHighWaterMark
+
+Revision 1.19 2000/12/21 16:24:06 morsch
+Coding convention clean-up
+
+Revision 1.18 2000/12/06 17:46:30 morsch
+Avoid random numbers 1 and 0.
+
+Revision 1.17 2000/12/04 11:22:03 morsch
+Init of sRandom as in 1.15
+
+Revision 1.16 2000/12/02 11:41:39 morsch
+Use SetRandom() to initialize random number generator in constructor.
+
+Revision 1.15 2000/11/30 20:29:02 morsch
+Initialise static variable sRandom in constructor: sRandom = fRandom;
+
+Revision 1.14 2000/11/30 07:12:50 alibrary
+Introducing new Rndm and QA classes
+
+Revision 1.13 2000/11/09 17:40:27 morsch
+Possibility to select/unselect spectator protons and neutrons.
+Method SetSpectators(Int_t spect) added. (FCA, Ch. Oppedisano)
+
+Revision 1.12 2000/10/20 13:38:38 morsch
+Debug printouts commented.
+
+Revision 1.11 2000/10/20 13:22:26 morsch
+- skip particle type 92 (string)
+- Charmed and beauty baryions (5122, 4122) are considered as stable consistent with
+ mesons.
+
+Revision 1.10 2000/10/17 15:10:20 morsch
+Write first all the parent particles to the stack and then the final state particles.
+
+Revision 1.9 2000/10/17 13:38:59 morsch
+Protection against division by zero in EvaluateCrossSection() and KinematicSelection(..) (FCA)
+
Revision 1.8 2000/10/17 12:46:31 morsch
Protect EvaluateCrossSections() against division by zero.
*/
+
+
+// Generator using HIJING as an external generator
+// The main HIJING options are accessable for the user through this interface.
+// Uses the THijing implementation of TGenerator.
+//
+// andreas.morsch@cern.ch
+
#include "AliGenHijing.h"
#include "AliGenHijingEventHeader.h"
#include "AliRun.h"
-#include "AliMC.h"
+#include "AliPDG.h"
#include <TArrayI.h>
#include <TParticle.h>
#include <THijing.h>
+#include <TGraph.h>
+#include <TLorentzVector.h>
+
ClassImp(AliGenHijing)
AliGenHijing::AliGenHijing()
- :AliGenerator()
+ :AliGenMC()
{
// Constructor
}
AliGenHijing::AliGenHijing(Int_t npart)
- :AliGenerator(npart)
+ :AliGenMC(npart)
{
// Default PbPb collisions at 5. 5 TeV
//
SetImpactParameterRange();
SetTarget();
SetProjectile();
- fKeep=0;
- fQuench=1;
- fShadowing=1;
- fTrigger=0;
- fDecaysOff=1;
- fEvaluate=0;
- fSelectAll=0;
- fFlavor=0;
+ SetBoostLHC();
+ fKeep = 0;
+ fQuench = 1;
+ fShadowing = 1;
+ fTrigger = 0;
+ fDecaysOff = 1;
+ fEvaluate = 0;
+ fSelectAll = 0;
+ fFlavor = 0;
+ fSpectators = 1;
+ fDsigmaDb = 0;
+ fDnDb = 0;
+ fPtMinJet = -2.5;
+ fRadiation = 1;
+ fEventVertex.Set(3);
+//
+// Set random number generator
+ sRandom = fRandom;
+ fHijing = 0;
+
}
AliGenHijing::AliGenHijing(const AliGenHijing & Hijing)
AliGenHijing::~AliGenHijing()
{
// Destructor
+ if ( fDsigmaDb) delete fDsigmaDb;
+ if ( fDnDb) delete fDnDb;
}
void AliGenHijing::Init()
fMinImpactParam, fMaxImpactParam));
fHijing=(THijing*) fgMCEvGen;
-
+ fHijing->SetIHPR2(2, fRadiation);
fHijing->SetIHPR2(3, fTrigger);
fHijing->SetIHPR2(4, fQuench);
fHijing->SetIHPR2(6, fShadowing);
fHijing->SetIHPR2(12, fDecaysOff);
fHijing->SetIHPR2(21, fKeep);
- fHijing->Rluset(50,0);
+ fHijing->SetHIPR1(10, fPtMinJet);
fHijing->Initialize();
//
if (fEvaluate) EvaluateCrossSections();
+//
+//
+// Initialize random generator
}
void AliGenHijing::Generate()
{
// Generate one event
- Float_t polar[3] = {0,0,0};
- Float_t origin[3]= {0,0,0};
- Float_t origin0[3]= {0,0,0};
- Float_t p[3], random[6];
- Float_t tof;
+ Float_t polar[3] = {0,0,0};
+ Float_t origin[3] = {0,0,0};
+ Float_t origin0[3] = {0,0,0};
+ Float_t p[3], random[6];
+ Float_t tof;
- static TClonesArray *particles;
+ static TClonesArray *particles;
// converts from mm/c to s
- const Float_t kconv=0.001/2.999792458e8;
+ const Float_t kconv = 0.001/2.999792458e8;
//
- Int_t nt=0;
- Int_t jev=0;
- Int_t j, kf, ks, imo;
- kf=0;
+ Int_t nt = 0;
+ Int_t jev = 0;
+ Int_t j, kf, ks, imo;
+ kf = 0;
- if(!particles) particles=new TClonesArray("TParticle",10000);
+ if(!particles) particles = new TClonesArray("TParticle",10000);
- fTrials=0;
- for (j=0;j<3;j++) origin0[j]=fOrigin[j];
- if(fVertexSmear==kPerEvent) {
- gMC->Rndm(random,6);
- for (j=0;j<3;j++) {
- origin0[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
- TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
+ fTrials = 0;
+ for (j = 0;j < 3; j++) origin0[j] = fOrigin[j];
+ if(fVertexSmear == kPerEvent) {
+ Float_t dv[3];
+ dv[2] = 1.e10;
+ while(TMath::Abs(dv[2]) > fCutVertexZ*fOsigma[2]) {
+ Rndm(random,6);
+ for (j=0; j < 3; j++) {
+ dv[j] = fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
+ TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
+ }
+ }
+ for (j=0; j < 3; j++) origin0[j] += dv[j];
+ } else if (fVertexSmear == kPerTrack) {
// fHijing->SetMSTP(151,0);
- }
- } else if (fVertexSmear==kPerTrack) {
-// fHijing->SetMSTP(151,0);
- for (j=0;j<3;j++) {
-// fHijing->SetPARP(151+j, fOsigma[j]*10.);
- }
- }
- while(1)
- {
-
- fHijing->GenerateEvent();
- fTrials++;
- fHijing->ImportParticles(particles,"All");
- Int_t np = particles->GetEntriesFast();
- printf("\n **************************************************%d\n",np);
- Int_t nc=0;
- if (np == 0 ) continue;
- Int_t i;
- Int_t * newPos = new Int_t[np];
- for (i = 0; i<np; i++) *(newPos+i)=i;
-
- for (i = 0; i<np; i++) {
- TParticle * iparticle = (TParticle *) particles->At(i);
-
- Bool_t hasMother = (iparticle->GetFirstMother() >=0);
- Bool_t hasDaughter = (iparticle->GetFirstDaughter() >=0);
- Bool_t selected = kTRUE;
- Bool_t hasSelectedDaughters = kFALSE;
-
+ for (j = 0; j < 3; j++) {
+// fHijing->SetPARP(151+j, fOsigma[j]*10.);
+ }
+ }
+ while(1)
+ {
+// Generate one event
+// --------------------------------------------------------------------------
+ fSpecn = 0;
+ fSpecp = 0;
+// --------------------------------------------------------------------------
+ fHijing->GenerateEvent();
+ fTrials++;
+ fHijing->ImportParticles(particles,"All");
+ if (fLHC) Boost(particles);
+
+ Int_t np = particles->GetEntriesFast();
+ printf("\n **************************************************%d\n",np);
+ Int_t nc = 0;
+ if (np == 0 ) continue;
+ Int_t i;
+ Int_t * newPos = new Int_t[np];
+
+ for (i = 0; i < np; i++) *(newPos+i) = i;
+// Get event vertex
+//
+ TParticle * iparticle = (TParticle *) particles->At(0);
+ fEventVertex[0] = origin0[0];
+ fEventVertex[1] = origin0[1];
+ fEventVertex[2] = origin0[2];
+
+//
+// First write parent particles
+//
- kf = iparticle->GetPdgCode();
- if (!fSelectAll) selected = KinematicSelection(iparticle)&&SelectFlavor(kf);
- if (hasDaughter && !selected) hasSelectedDaughters = DaughtersSelection(iparticle, particles);
+ for (i = 0; i < np; i++) {
+ iparticle = (TParticle *) particles->At(i);
+// Is this a parent particle ?
+ if (Stable(iparticle)) continue;
+//
+ Bool_t hasMother = (iparticle->GetFirstMother() >=0);
+ Bool_t selected = kTRUE;
+ Bool_t hasSelectedDaughters = kFALSE;
+
+
+ kf = iparticle->GetPdgCode();
+ ks = iparticle->GetStatusCode();
+ if (kf == 92) continue;
+
+ if (!fSelectAll) selected = KinematicSelection(iparticle, 0)&&SelectFlavor(kf);
+ hasSelectedDaughters = DaughtersSelection(iparticle, particles);
//
// Put particle on the stack if it is either selected or it is the mother of at least one seleted particle
//
-
- if (selected || hasSelectedDaughters) {
- nc++;
- ks = iparticle->GetStatusCode();
- p[0]=iparticle->Px();
- p[1]=iparticle->Py();
- p[2]=iparticle->Pz();
- origin[0]=origin0[0]+iparticle->Vx()/10;
- origin[1]=origin0[1]+iparticle->Vy()/10;
- origin[2]=origin0[2]+iparticle->Vz()/10;
- tof=kconv*iparticle->T();
- imo=-1;
- if (hasMother) {
- imo=iparticle->GetFirstMother();
- imo=*(newPos+imo);
- }
+ if (selected || hasSelectedDaughters) {
+ nc++;
+ p[0] = iparticle->Px();
+ p[1] = iparticle->Py();
+ p[2] = iparticle->Pz();
+ origin[0] = origin0[0]+iparticle->Vx()/10;
+ origin[1] = origin0[1]+iparticle->Vy()/10;
+ origin[2] = origin0[2]+iparticle->Vz()/10;
+ tof = kconv*iparticle->T();
+ imo = -1;
+ TParticle* mother = 0;
+ if (hasMother) {
+ imo = iparticle->GetFirstMother();
+ mother = (TParticle *) particles->At(imo);
+ imo = (mother->GetPdgCode() != 92) ? imo =* (newPos+imo) : -1;
-// printf("\n selected iparent %d %d %d \n",i, kf, imo);
- if (hasDaughter) {
- gAlice->SetTrack(0,imo,kf,p,origin,polar,
- tof,"Primary",nt);
- } else {
- gAlice->SetTrack(fTrackIt,imo,kf,p,origin,polar,
- tof,"Secondary",nt);
- }
- *(newPos+i)=nt;
- } // selected
- } // particle loop
- delete newPos;
- printf("\n I've put %i particles on the stack \n",nc);
- if (nc > 0) {
- jev+=nc;
- if (jev >= fNpart || fNpart == -1) {
- fKineBias=Float_t(fNpart)/Float_t(fTrials);
- printf("\n Trials: %i %i %i\n",fTrials, fNpart, jev);
- break;
}
- }
- } // event loop
- fHijing->Rluget(50,-1);
-}
-
-Bool_t AliGenHijing::KinematicSelection(TParticle *particle)
-{
-// Perform kinematic selection
- Double_t px=particle->Px();
- Double_t py=particle->Py();
- Double_t pz=particle->Pz();
- Double_t e=particle->Energy();
-
+// Put particle on the stack ...
+// printf("\n set track mother: %d %d %d %d %d %d ",i,imo, kf, nt+1, selected, hasSelectedDaughters);
+
+ SetTrack(0,imo,kf,p,origin,polar, tof,kPPrimary,nt);
+// ... and keep it there
+ KeepTrack(nt);
//
-// transverse momentum cut
- Double_t pt=TMath::Sqrt(px*px+py*py);
- if (pt > fPtMax || pt < fPtMin)
- {
-// printf("\n failed pt cut %f %f %f \n",pt,fPtMin,fPtMax);
- return kFALSE;
- }
+ *(newPos+i)=nt;
+ } // selected
+ } // particle loop parents
//
-// momentum cut
- Double_t p=TMath::Sqrt(px*px+py*py+pz*pz);
- if (p > fPMax || p < fPMin)
- {
-// printf("\n failed p cut %f %f %f \n",p,fPMin,fPMax);
- return kFALSE;
- }
-
+// Now write the final state particles
//
-// theta cut
- Double_t theta = Double_t(TMath::ATan2(Double_t(pt),Double_t(pz)));
- if (theta > fThetaMax || theta < fThetaMin)
- {
-
-// printf("\n failed theta cut %f %f %f \n",theta,fThetaMin,fThetaMax);
- return kFALSE;
- }
+ for (i = 0; i<np; i++) {
+ TParticle * iparticle = (TParticle *) particles->At(i);
+// Is this a final state particle ?
+ if (!Stable(iparticle)) continue;
+
+ Bool_t hasMother = (iparticle->GetFirstMother() >=0);
+ Bool_t selected = kTRUE;
+ kf = iparticle->GetPdgCode();
+ ks = iparticle->GetStatusCode();
+// --------------------------------------------------------------------------
+// Count spectator neutrons and protons
+ if(ks == 0 || ks == 1 || ks == 10 || ks == 11){
+ if(kf == kNeutron) fSpecn += 1;
+ if(kf == kProton) fSpecp += 1;
+ }
+// --------------------------------------------------------------------------
+//
+ if (!fSelectAll) {
+ selected = KinematicSelection(iparticle,0)&&SelectFlavor(kf);
+ if (!fSpectators && selected) selected = (ks != 0 && ks != 1 && ks != 10
+ && ks != 11);
+ }
//
-// rapidity cut
- Double_t y;
- if(e<=pz) y = 99;
- else if (e<=-pz) y = -99;
- else y = 0.5*TMath::Log((e+pz)/(e-pz));
- if (y > fYMax || y < fYMin)
- {
-// printf("\n failed y cut %f %f %f \n",y,fYMin,fYMax);
- return kFALSE;
- }
-
+// Put particle on the stack if selected
//
-// phi cut
- Double_t phi=Double_t(TMath::ATan2(Double_t(py),Double_t(px)));
- if (phi > fPhiMax || phi < fPhiMin)
- {
-// printf("\n failed phi cut %f %f %f \n",phi,fPhiMin,fPhiMax);
- return kFALSE;
- }
-
- return kTRUE;
+ if (selected) {
+ nc++;
+ p[0] = iparticle->Px();
+ p[1] = iparticle->Py();
+ p[2] = iparticle->Pz();
+ origin[0] = origin0[0]+iparticle->Vx()/10;
+ origin[1] = origin0[1]+iparticle->Vy()/10;
+ origin[2] = origin0[2]+iparticle->Vz()/10;
+ tof = kconv*iparticle->T();
+ imo = -1;
+ TParticle* mother = 0;
+ if (hasMother) {
+ imo = iparticle->GetFirstMother();
+ mother = (TParticle *) particles->At(imo);
+ imo = (mother->GetPdgCode() != 92) ? imo=*(newPos+imo) : -1;
+ }
+// Put particle on the stack
+ SetTrack(fTrackIt,imo,kf,p,origin,polar,
+ tof,kPNoProcess,nt);
+ KeepTrack(nt);
+ *(newPos+i)=nt;
+ } // selected
+ } // particle loop final state
+
+ delete[] newPos;
+
+ printf("\n I've put %i particles on the stack \n",nc);
+ if (nc > 0) {
+ jev += nc;
+ if (jev >= fNpart || fNpart == -1) {
+ fKineBias = Float_t(fNpart)/Float_t(fTrials);
+ printf("\n Trials: %i %i %i\n",fTrials, fNpart, jev);
+ break;
+ }
+ }
+ } // event loop
+ MakeHeader();
+
+ SetHighWaterMark(nt);
}
void AliGenHijing::KeepFullEvent()
{
// Glauber Calculation of geometrical x-section
//
- Float_t xTot=0.; // barn
- Float_t xTotHard=0.; // barn
- Float_t xPart=0.; // barn
- Float_t xPartHard=0.; // barn
- Float_t sigmaHard=0.1; // mbarn
- Float_t bMin=0.;
- Float_t bMax=fHijing->GetHIPR1(34)+fHijing->GetHIPR1(35);
- const Float_t kdib=0.2;
- Int_t kMax=Int_t((bMax-bMin)/kdib)+1;
+ Float_t xTot = 0.; // barn
+ Float_t xTotHard = 0.; // barn
+ Float_t xPart = 0.; // barn
+ Float_t xPartHard = 0.; // barn
+ Float_t sigmaHard = 0.1; // mbarn
+ Float_t bMin = 0.;
+ Float_t bMax = fHijing->GetHIPR1(34)+fHijing->GetHIPR1(35);
+ const Float_t kdib = 0.2;
+ Int_t kMax = Int_t((bMax-bMin)/kdib)+1;
printf("\n Projectile Radius (fm): %f \n",fHijing->GetHIPR1(34));
printf("\n Target Radius (fm): %f \n",fHijing->GetHIPR1(35));
Int_t i;
- Float_t oldvalue=0.;
+ Float_t oldvalue= 0.;
+
+ Float_t* b = new Float_t[kMax];
+ Float_t* si1 = new Float_t[kMax];
+ Float_t* si2 = new Float_t[kMax];
- for (i=0; i<kMax; i++)
+ for (i = 0; i < kMax; i++)
{
- Float_t xb=bMin+i*kdib;
+ Float_t xb = bMin+i*kdib;
Float_t ov;
ov=fHijing->Profile(xb);
- Float_t gb = 2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*(1.-TMath::Exp(-fHijing->GetHINT1(12)*ov));
- Float_t gbh = 2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*sigmaHard*ov;
+ Float_t gb = 2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*(1.-TMath::Exp(-fHijing->GetHINT1(12)*ov));
+ Float_t gbh = 2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*sigmaHard*ov;
xTot+=gb;
- xTotHard+=gbh;
+ xTotHard += gbh;
if (xb > fMinImpactParam && xb < fMaxImpactParam)
{
- xPart+=gb;
- xPartHard+=gbh;
+ xPart += gb;
+ xPartHard += gbh;
}
if(oldvalue) if ((xTot-oldvalue)/oldvalue<0.0001) break;
- oldvalue=xTot;
+ oldvalue = xTot;
printf("\n Total cross section (barn): %d %f %f \n",i, xb, xTot);
printf("\n Hard cross section (barn): %d %f %f \n\n",i, xb, xTotHard);
+ if (i>0) {
+ si1[i] = gb/kdib;
+ si2[i] = gbh/gb;
+ b[i] = xb;
+ }
}
+
printf("\n Total cross section (barn): %f \n",xTot);
printf("\n Hard cross section (barn): %f \n \n",xTotHard);
printf("\n Partial cross section (barn): %f %f \n",xPart, xPart/xTot*100.);
printf("\n Partial hard cross section (barn): %f %f \n",xPartHard, xPartHard/xTotHard*100.);
+
+// Store result as a graph
+ b[0] = 0;
+ si1[0] = 0;
+ si2[0]=si2[1];
+
+ fDsigmaDb = new TGraph(i, b, si1);
+ fDnDb = new TGraph(i, b, si2);
}
Bool_t AliGenHijing::DaughtersSelection(TParticle* iparticle, TClonesArray* particles)
// Looks recursively if one of the daughters has been selected
//
// printf("\n Consider daughters %d:",iparticle->GetPdgCode());
- Int_t imin=-1;
- Int_t imax=-1;
+ Int_t imin = -1;
+ Int_t imax = -1;
Int_t i;
- Bool_t hasDaughters= (iparticle->GetFirstDaughter() >=0);
- Bool_t selected=kFALSE;
+ Bool_t hasDaughters = (iparticle->GetFirstDaughter() >=0);
+ Bool_t selected = kFALSE;
if (hasDaughters) {
- imin=iparticle->GetFirstDaughter();
- imax=iparticle->GetLastDaughter();
- for (i=imin; i<= imax; i++){
- TParticle * jparticle = (TParticle *) particles->At(i);
- Int_t ip=jparticle->GetPdgCode();
- if (KinematicSelection(jparticle)&&SelectFlavor(ip)) {selected=kTRUE; break;}
+ imin = iparticle->GetFirstDaughter();
+ imax = iparticle->GetLastDaughter();
+ for (i = imin; i <= imax; i++){
+ TParticle * jparticle = (TParticle *) particles->At(i);
+ Int_t ip = jparticle->GetPdgCode();
+ if (KinematicSelection(jparticle,0)&&SelectFlavor(ip)) {
+ selected=kTRUE; break;
+ }
if (DaughtersSelection(jparticle, particles)) {selected=kTRUE; break; }
}
} else {
return kFALSE;
}
-
return selected;
}
// 5: beauty
if (fFlavor == 0) return kTRUE;
- Int_t ifl=TMath::Abs(pid/100);
+ Int_t ifl = TMath::Abs(pid/100);
if (ifl > 10) ifl/=10;
- return ((fFlavor==4 && (ifl==4 || ifl==5)) ||
- (fFlavor==5 && ifl==5));
+ return (fFlavor == ifl);
+}
+Bool_t AliGenHijing::Stable(TParticle* particle)
+{
+// Return true for a stable particle
+//
+ if (particle->GetFirstDaughter() < 0 )
+ {
+ return kTRUE;
+ } else {
+ return kFALSE;
+ }
}
+
+void AliGenHijing::Boost(TClonesArray* particles)
+{
+//
+// Boost cms into LHC lab frame
+//
+ Double_t dy = - 0.5 * TMath::Log(Double_t(fZProjectile) * Double_t(fATarget) /
+ (Double_t(fZTarget) * Double_t(fAProjectile)));
+ Double_t beta = TMath::TanH(dy);
+ Double_t gamma = 1./TMath::Sqrt(1.-beta*beta);
+ Double_t gb = gamma * beta;
+
+ printf("\n Boosting particles to lab frame %f %f %f", dy, beta, gamma);
+
+ Int_t i;
+ Int_t np = particles->GetEntriesFast();
+ for (i = 0; i < np; i++)
+ {
+ TParticle* iparticle = (TParticle*) particles->At(i);
+
+ Double_t e = iparticle->Energy();
+ Double_t px = iparticle->Px();
+ Double_t py = iparticle->Py();
+ Double_t pz = iparticle->Pz();
+
+ Double_t eb = gamma * e - gb * pz;
+ Double_t pzb = -gb * e + gamma * pz;
+
+ iparticle->SetMomentum(px, py, pzb, eb);
+ }
+}
+
+
void AliGenHijing::MakeHeader()
{
// Builds the event header, to be called after each event
- AliGenHijingEventHeader* header = new AliGenHijingEventHeader("Hijing");
-// header->SetDate(date);
-// header->SetRunNumber(run);
-// header->SetEventNumber(event);
- header->SetNProduced(fHijing->GetNATT());
- header->SetImpactParameter(fHijing->GetHINT1(19));
- header->SetTotalEnergy(fHijing->GetEATT());
- header->SetHardScatters(fHijing->GetJATT());
- header->SetParticipants(fHijing->GetNP(), fHijing->GetNT());
- header->SetCollisions(fHijing->GetN0(),
- fHijing->GetN01(),
- fHijing->GetN10(),
- fHijing->GetN11());
+ AliGenEventHeader* header = new AliGenHijingEventHeader("Hijing");
+ ((AliGenHijingEventHeader*) header)->SetNProduced(fHijing->GetNATT());
+ ((AliGenHijingEventHeader*) header)->SetImpactParameter(fHijing->GetHINT1(19));
+ ((AliGenHijingEventHeader*) header)->SetTotalEnergy(fHijing->GetEATT());
+ ((AliGenHijingEventHeader*) header)->SetHardScatters(fHijing->GetJATT());
+ ((AliGenHijingEventHeader*) header)->SetParticipants(fHijing->GetNP(), fHijing->GetNT());
+ ((AliGenHijingEventHeader*) header)->SetCollisions(fHijing->GetN0(),
+ fHijing->GetN01(),
+ fHijing->GetN10(),
+ fHijing->GetN11());
+ ((AliGenHijingEventHeader*) header)->SetSpectators(fSpecn, fSpecp);
+
+// 4-momentum vectors of the triggered jets.
+//
+// Before final state gluon radiation.
+ TLorentzVector* jet1 = new TLorentzVector(fHijing->GetHINT1(21),
+ fHijing->GetHINT1(22),
+ fHijing->GetHINT1(23),
+ fHijing->GetHINT1(24));
+
+ TLorentzVector* jet2 = new TLorentzVector(fHijing->GetHINT1(31),
+ fHijing->GetHINT1(32),
+ fHijing->GetHINT1(33),
+ fHijing->GetHINT1(34));
+// After final state gluon radiation.
+ TLorentzVector* jet3 = new TLorentzVector(fHijing->GetHINT1(26),
+ fHijing->GetHINT1(27),
+ fHijing->GetHINT1(28),
+ fHijing->GetHINT1(29));
+
+ TLorentzVector* jet4 = new TLorentzVector(fHijing->GetHINT1(36),
+ fHijing->GetHINT1(37),
+ fHijing->GetHINT1(38),
+ fHijing->GetHINT1(39));
+ ((AliGenHijingEventHeader*) header)->SetJets(jet1, jet2, jet3, jet4);
+// Event Vertex
+ header->SetPrimaryVertex(fEventVertex);
+ gAlice->SetGenEventHeader(header);
}
+
AliGenHijing& AliGenHijing::operator=(const AliGenHijing& rhs)
{
// Assignment operator
return *this;
}
+
+#ifndef WIN32
+# define rluget_hijing rluget_hijing_
+# define rluset_hijing rluset_hijing_
+# define rlu_hijing rlu_hijing_
+# define type_of_call
+#else
+# define rluget_hijing RLUGET_HIJING
+# define rluset_hijing RLUSET_HIJING
+# define rlu_hijing RLU_HIJING
+# define type_of_call _stdcall
+#endif
+
+
+extern "C" {
+ void type_of_call rluget_hijing(Int_t & /*lfn*/, Int_t & /*move*/)
+ {printf("Dummy version of rluget_hijing reached\n");}
+
+ void type_of_call rluset_hijing(Int_t & /*lfn*/, Int_t & /*move*/)
+ {printf("Dummy version of rluset_hijing reached\n");}
+
+ Double_t type_of_call rlu_hijing(Int_t & /*idum*/)
+ {
+ Float_t r;
+ do r=sRandom->Rndm(); while(0 >= r || r >= 1);
+ return r;
+ }
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff