//
// Forward Paramters to the AliPythia object
fPythia->DefineParticles();
- fPythia->ForceDecay(fForceDecay);
fPythia->SetCKIN(3,fPtHardMin);
fPythia->SetCKIN(4,fPtHardMax);
fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc);
+ fPythia->ForceDecay(fForceDecay);
fPythia->LuList(0);
fPythia->PyStat(2);
// Parent and Children Selection
case jpsi:
fParentSelect[0]=443;
break;
+ case mb:
+ break;
}
switch (fForceDecay)
case dimuon:
case b_jpsi_dimuon:
case b_psip_dimuon:
+ case pitomu:
+ case katomu:
fChildSelect[0]=13;
break;
}
{
AliMC* pMC = AliMC::GetMC();
- 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 polar[3] = {0,0,0};
+ Float_t origin[3]= {0,0,0};
+ Float_t origin_p[3]= {0,0,0};
+ Float_t origin0[3]= {0,0,0};
+ Float_t p[3], p_p[4], random[6];
+// converts from mm/c to s
+ const Float_t kconv=0.001/2.999792458e8;
//
- printf("Generate event");
Int_t nt=0;
+ Int_t nt_p=0;
Int_t jev=0;
Int_t j;
fPythia->SetPARP(151+j, fOsigma[j]*10.);
}
}
-
-
while(1)
{
fPythia->PyEvnt();
printf("\n **************************************************%d\n",np);
Int_t nc=0;
if (np == 0 ) continue;
- for (Int_t i = 0; i<np; i++) {
- TMCParticle * iparticle = (TMCParticle *) particles->At(i);
- Int_t kf = iparticle->GetKF();
- fChildWeight=(fPythia->GetBraPart(kf))*fParentWeight;
+ if (fProcess != mb) {
+ for (Int_t i = 0; i<np; i++) {
+ TMCParticle * iparticle = (TMCParticle *) particles->At(i);
+ Int_t kf = iparticle->GetKF();
+ fChildWeight=(fPythia->GetBraPart(kf))*fParentWeight;
//
// Parent
- if (ParentSelected(TMath::Abs(kf))) {
-
- if (KinematicSelection(iparticle)) {
- nc++;
+ if (ParentSelected(TMath::Abs(kf))) {
+ if (KinematicSelection(iparticle)) {
+ if (nc==0) {
+//
+// Store information concerning the hard scattering process
+//
+ Float_t mass_p = fPythia->GetPARI(13);
+ Float_t pt_p = fPythia->GetPARI(17);
+ Float_t y_p = fPythia->GetPARI(37);
+ Float_t xmt_p = sqrt(pt_p*pt_p+mass_p*mass_p);
+ Float_t ty = Float_t(TMath::TanH(y_p));
+ p_p[0] = pt_p;
+ p_p[1] = 0;
+ p_p[2] = xmt_p*ty/sqrt(1.-ty*ty);
+ p_p[3] = mass_p;
+ gAlice->SetTrack(0,-1,-1,
+ p_p,origin_p,polar,
+ 0,"Hard Scat.",nt_p,fParentWeight);
+ gAlice->KeepTrack(nt_p);
+ }
+ nc++;
//
// store parent track information
- p[0]=iparticle->GetPx();
- p[1]=iparticle->GetPy();
- p[2]=iparticle->GetPz();
- origin[0]=origin0[0]+iparticle->GetVx()/10;
- origin[1]=origin0[1]+iparticle->GetVy()/10;
- origin[2]=origin0[2]+iparticle->GetVz()/10;
+ p[0]=iparticle->GetPx();
+ p[1]=iparticle->GetPy();
+ p[2]=iparticle->GetPz();
+ origin[0]=origin0[0]+iparticle->GetVx()/10;
+ origin[1]=origin0[1]+iparticle->GetVy()/10;
+ origin[2]=origin0[2]+iparticle->GetVz()/10;
- Int_t ifch=iparticle->GetFirstChild();
- Int_t ilch=iparticle->GetLastChild();
- if (ifch !=0 && ilch !=0) {
- gAlice->SetTrack(0,-1,fPythia->GetGeantCode(kf),
- p,origin,polar,
- 0,"Primary",nt,fParentWeight);
- Int_t iparent = nt;
+ Int_t ifch=iparticle->GetFirstChild();
+ Int_t ilch=iparticle->GetLastChild();
+ if (ifch !=0 && ilch !=0) {
+ gAlice->SetTrack(0,nt_p,fPythia->GetGeantCode(kf),
+ p,origin,polar,
+ 0,"Primary",nt,fParentWeight);
+ gAlice->KeepTrack(nt);
+ Int_t iparent = nt;
//
// Children
- for (Int_t j=ifch; j<=ilch; j++)
- {
- TMCParticle * ichild =
- (TMCParticle *) particles->At(j-1);
- Int_t kf = ichild->GetKF();
+ for (Int_t j=ifch; j<=ilch; j++)
+ {
+ TMCParticle * ichild =
+ (TMCParticle *) particles->At(j-1);
+ Int_t kf = ichild->GetKF();
//
//
- if (ChildSelected(TMath::Abs(kf))) {
- Int_t kg=fPythia->GetGeantCode(kf);
- origin[0]=ichild->GetVx();
- origin[1]=ichild->GetVy();
- origin[2]=ichild->GetVz();
- p[0]=ichild->GetPx();
- p[1]=ichild->GetPy();
- p[2]=ichild->GetPz();
- Float_t tof=ichild->GetTime();
- gAlice->SetTrack(1, iparent, kg,
- p,origin,polar,
- tof,"Decay",nt,fChildWeight);
- gAlice->KeepTrack(nt);
- } // select child
- } // child loop
- }
- } // kinematic selection
- } // select particle
- } // particles
+ if (ChildSelected(TMath::Abs(kf))) {
+ Int_t kg=fPythia->GetGeantCode(kf);
+ origin[0]=ichild->GetVx();
+ origin[1]=ichild->GetVy();
+ origin[2]=ichild->GetVz();
+ p[0]=ichild->GetPx();
+ p[1]=ichild->GetPy();
+ p[2]=ichild->GetPz();
+ Float_t tof=kconv*ichild->GetTime();
+ gAlice->SetTrack(fTrackIt, iparent, kg,
+ p,origin,polar,
+ tof,"Decay",nt,fChildWeight);
+ gAlice->KeepTrack(nt);
+ } // select child
+ } // child loop
+ }
+ } // kinematic selection
+ } // select particle
+ } // particle loop
+ } else {
+ for (Int_t i = 0; i<np; i++) {
+ TMCParticle * iparticle = (TMCParticle *) particles->At(i);
+ Int_t kf = iparticle->GetKF();
+ Int_t ks = iparticle->GetKS();
+ Int_t gc = fPythia->GetGeantCode(kf);
+ if (ks==1 && gc!=0 && KinematicSelection(iparticle)) {
+ nc++;
+//
+// store track information
+ p[0]=iparticle->GetPx();
+ p[1]=iparticle->GetPy();
+ p[2]=iparticle->GetPz();
+ origin[0]=origin0[0]+iparticle->GetVx()/10;
+ origin[1]=origin0[1]+iparticle->GetVy()/10;
+ origin[2]=origin0[2]+iparticle->GetVz()/10;
+ Float_t tof=kconv*iparticle->GetTime();
+ gAlice->SetTrack(fTrackIt,-1,gc,p,origin,polar,
+ tof,"Primary",nt);
+ gAlice->KeepTrack(nt);
+ } // select particle
+ } // particle loop
+ printf("\n I've put %i particles on the stack \n",nc);
+ } // mb ?
if (nc > 0) {
- jev++;
+ jev+=nc;
if (jev >= fNpart) {
fKineBias=Float_t(fNpart)/Float_t(fTrials);
printf("\n Trials: %i\n",fTrials);
//
// theta cut
- Float_t theta = Float_t(TMath::ATan2(Double_t(pt),Double_t(p)));
+ Float_t theta = Float_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);
+
+
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff