+
+Bool_t AliJetAODReader::AcceptAODMCParticle(AliAODMCParticle *mcP,Short_t flag){
+
+ //
+ // filter for charge and for charged and neutral, no detector
+ // response yet
+ // physical priamries already selected
+
+ Int_t pdg = TMath::Abs(mcP->GetPdgCode());
+
+ // exclude neutrinos anyway
+ if((pdg == 12 || pdg == 14 || pdg == 16)) return kFALSE;
+
+ if(flag==AliJetAODReaderHeader::kAllMC)return kTRUE;
+ if(flag==AliJetAODReaderHeader::kChargedMC){
+ if(mcP->Charge()==0)return kFALSE;
+ return kTRUE;
+ }
+
+ return kTRUE;
+
+}
+
+
+Bool_t AliJetAODReader::FillMomentumArrayMC(){
+
+ //
+ // This routine fetches the MC particles from the AOD
+ // Depending on the flag all particles except neurinos are use
+ // or only charged particles
+ //
+
+ TClonesArray *mcArray = (TClonesArray*)fAOD->FindListObject(AliAODMCParticle::StdBranchName());
+ if(!mcArray){
+ Printf("%s:%d No MC particle branch found",(char*)__FILE__,__LINE__);
+ return kFALSE;
+ }
+
+ Int_t nMC = mcArray->GetEntriesFast();
+
+ // get number of tracks in event (for the loop)
+ if(fDebug>0)printf("AOD MC tracks: %5d \t", nMC);
+
+ // temporary storage of signal and pt cut flag
+ Int_t* sflag = new Int_t[nMC];
+ Int_t* cflag = new Int_t[nMC];
+
+ // get cuts set by user
+ Float_t ptMin = fReaderHeader->GetPtCut();
+ Float_t etaMin = fReaderHeader->GetFiducialEtaMin();
+ Float_t etaMax = fReaderHeader->GetFiducialEtaMax();
+ Int_t mcTrack = 0;
+ Float_t pt, eta;
+ TVector3 p3;
+
+ Short_t readerFlag = ((AliJetAODReaderHeader*)fReaderHeader)->GetReadAODMC();
+
+
+ for (Int_t it = 0; it < nMC; it++) {
+ AliAODMCParticle *track = (AliAODMCParticle*)mcArray->At(it);
+ if(!track->IsPhysicalPrimary())continue;
+
+ p3.SetXYZ(track->Px(),track->Py(),track->Pz());
+ eta = p3.Eta();
+ if ( (eta > etaMax) || (eta < etaMin)) continue; // checking eta cut
+ if(!AcceptAODMCParticle(track,readerFlag))continue;
+ pt = p3.Pt();
+
+
+
+
+ if (mcTrack == 0){
+ fRef->Delete(); // make sure to delete before placement new...
+ new(fRef) TRefArray(TProcessID::GetProcessWithUID(track));
+ }
+ new ((*fMomentumArray)[mcTrack]) TLorentzVector(p3,p3.Mag());
+ sflag[mcTrack] = 1;
+ cflag[mcTrack] = ( pt > ptMin ) ? 1: 0;
+ fRef->Add(track);
+ mcTrack++;
+ }
+ if(fDebug>0)printf("Used MC tracks: %5d \n", mcTrack);
+ // set the signal flags
+ fSignalFlag.Set(mcTrack,sflag);
+ fCutFlag.Set(mcTrack,cflag);
+
+ delete [] sflag;
+ delete [] cflag;
+
+ return kTRUE;
+}
+