+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ * *
+ * Author: The ALICE Off-line Project. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+/*
+$Log$
+*/
+
#include "AliGenParam.h"
#include "AliGenMUONlib.h"
#include "AliRun.h"
-#include "TGeant3.h"
#include "AliPythia.h"
#include <TDirectory.h>
#include <TFile.h>
fYPara = 0;
fParam = jpsi_p;
fAnalog = analog;
+ SetCutOnChild();
}
//____________________________________________________________
fChildSelect.Set(5);
for (Int_t i=0; i<5; i++) fChildSelect[i]=0;
ForceDecay();
+ SetCutOnChild();
}
//____________________________________________________________
Float_t IntPt0 = PtPara->Integral(0,15);
Float_t IntPtS = PtPara->Integral(fPtMin,fPtMax);
Float_t PhiWgt=(fPhiMax-fPhiMin)/2./TMath::Pi();
- if (fAnalog) {
+ if (fAnalog == analog) {
fYWgt = IntYS/fdNdy0;
fPtWgt = IntPtS/IntPt0;
fParentWeight = fYWgt*fPtWgt*PhiWgt/fNpart;
// on the vertex is done if selected
+ //printf("Generate !!!!!!!!!!!!!\n");
+
Float_t polar[3]= {0,0,0};
//
Float_t origin[3], origin0[3];
Float_t pt, pl, ptot;
Float_t phi, theta;
- Float_t p[3];
+ Float_t p[3], pc[3], och[3], pch[10][3];
Float_t ty, xmt;
- Int_t i, nt, j;
+ Int_t nt, i, j, kfch[10];
Float_t wgtp, wgtch;
Double_t dummy;
+ static TClonesArray *particles;
//
+ if(!particles) particles=new TClonesArray("TParticle",1000);
//
Float_t random[6];
for (j=0;j<3;j++) origin0[j]=fOrigin[j];
TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
}
}
- for(i=0;i<fNpart;i++) {
- while(1) {
+ Int_t ipa=0;
+ while (ipa<fNpart) {
+ while(1) {
//
// particle type
Int_t Ipart = fIpParaFunc();
ty=Float_t(TMath::TanH(fYPara->GetRandom()));
//
// pT
- if (fAnalog) {
+ if (fAnalog == analog) {
pt=fPtPara->GetRandom();
wgtp=fParentWeight;
wgtch=fChildWeight;
TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
}
}
-
-//
-// parent
-
- gAlice->
- SetTrack(0,-1,Ipart,p,origin,polar,0,"Primary",nt,wgtp);
- Int_t iparent=nt;
//
// use lujet to decay particle
Float_t energy=TMath::Sqrt(ptot*ptot+am*am);
fPythia->DecayParticle(Ipart,energy,theta,phi);
-// fPythia->LuList(1);
-
+ // fPythia->LuList(1);
+
+
+ //printf("origin0 %f %f %f\n",origin0[0],origin0[1],origin0[2]);
+ //printf("fCutOnChild %d \n",fCutOnChild);
//
// select muons
- TObjArray* particles = fPythia->ImportParticles() ;
- Int_t np = particles->GetEntriesFast();
- for (Int_t i = 0; i<np; i++) {
+ Int_t np=fPythia->ImportParticles(particles,"All");
+ //printf("np %d \n",np);
+ Int_t ncsel=0;
+ for (i = 1; i<np; i++) {
TParticle * iparticle = (TParticle *) particles->At(i);
Int_t kf = iparticle->GetPdgCode();
+ //printf("kf %d\n",kf);
//
// children
if (ChildSelected(TMath::Abs(kf)))
{
- 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;
- gAlice->SetTrack(fTrackIt,iparent,kf,
- p,origin,polar,
- 0,"Decay",nt,wgtch);
- gAlice->KeepTrack(nt);
+ pc[0]=iparticle->Px();
+ pc[1]=iparticle->Py();
+ pc[2]=iparticle->Pz();
+ och[0]=origin0[0]+iparticle->Vx()/10;
+ och[1]=origin0[1]+iparticle->Vy()/10;
+ och[2]=origin0[2]+iparticle->Vz()/10;
+ if (fCutOnChild) {
+ Float_t PtChild=TMath::Sqrt(pc[0]*pc[0]+pc[1]*pc[1]);
+ Float_t PChild=TMath::Sqrt(PtChild*PtChild+pc[2]*pc[2]);
+ Float_t ThetaChild=TMath::ATan2(PtChild,pc[2]);
+ Float_t PhiChild=TMath::ATan2(pc[1],pc[0])+TMath::Pi();
+ Bool_t childok =
+ ((PtChild > fPtMin && PtChild <fPtMax) &&
+ (PChild > fPMin && PChild <fPMax) &&
+ (ThetaChild>fThetaMin && ThetaChild<fThetaMax) &&
+ (PhiChild > fPhiMin && PhiChild <fPhiMax));
+ if(childok)
+ {
+ pch[ncsel][0]=pc[0];
+ pch[ncsel][1]=pc[1];
+ pch[ncsel][2]=pc[2];
+ kfch[ncsel]=kf;
+ ncsel++;
+ } else {
+ ncsel=-1;
+ break;
+ } // child kine cuts
+ } else {
+ pch[ncsel][0]=pc[0];
+ pch[ncsel][1]=pc[1];
+ pch[ncsel][2]=pc[2];
+ kfch[ncsel]=kf;
+ ncsel++;
+ } // if child selection
} // select muon
} // decay particle loop
+ Int_t iparent;
+ if ((fCutOnChild && ncsel >0) || !fCutOnChild){
+ ipa++;
+//
+// parent
+ gAlice->
+ SetTrack(0,-1,Ipart,p,origin,polar,0,"Primary",nt,wgtp);
+ iparent=nt;
+
+ for (i=0; i< ncsel; i++) {
+ gAlice->SetTrack(fTrackIt,iparent,kfch[i],
+ &pch[i][0],och,polar,
+ 0,"Decay",nt,wgtch);
+ gAlice->KeepTrack(nt);
+ }
+
+ } // kinematic selection
break;
- } // kinematic selection
+ } // while
} // event loop
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff