AliAnaPhoton::AliAnaPhoton() :
AliAnaPartCorrBaseClass(), fCalorimeter(""),
fMinDist(0.),fMinDist2(0.),fMinDist3(0.),fRejectTrackMatch(0),
+ fCheckConversion(kFALSE),fAddConvertedPairsToAOD(kFALSE), fMassCut(0),
fhPtPhoton(0),fhPhiPhoton(0),fhEtaPhoton(0),
//MC
fhDeltaE(0), fhDeltaPt(0),fhRatioE(0), fhRatioPt(0),fh2E(0),fh2Pt(0),
//____________________________________________________________________________
AliAnaPhoton::AliAnaPhoton(const AliAnaPhoton & g) :
AliAnaPartCorrBaseClass(g), fCalorimeter(g.fCalorimeter),
- fMinDist(g.fMinDist),fMinDist2(g.fMinDist2), fMinDist3(g.fMinDist3),
- fRejectTrackMatch(g.fRejectTrackMatch),
- fhPtPhoton(g.fhPtPhoton),fhPhiPhoton(g.fhPhiPhoton),fhEtaPhoton(g.fhEtaPhoton),
+ fMinDist(g.fMinDist),fMinDist2(g.fMinDist2), fMinDist3(g.fMinDist3),
+ fRejectTrackMatch(g.fRejectTrackMatch),
+ fCheckConversion(g.fCheckConversion),fAddConvertedPairsToAOD(g.fAddConvertedPairsToAOD),
+ fMassCut(g.fMassCut),
+ fhPtPhoton(g.fhPtPhoton),fhPhiPhoton(g.fhPhiPhoton),fhEtaPhoton(g.fhEtaPhoton),
//MC
fhDeltaE(g.fhDeltaE), fhDeltaPt(g.fhDeltaPt),
fhRatioE(g.fhRatioE), fhRatioPt(g.fhRatioPt),
fMinDist = g.fMinDist;
fMinDist2 = g.fMinDist2;
fMinDist3 = g.fMinDist3;
- fRejectTrackMatch = g.fRejectTrackMatch;
-
+ fMassCut = g.fMassCut;
+
+ fRejectTrackMatch = g.fRejectTrackMatch;
+ fCheckConversion = g.fCheckConversion;
+ fAddConvertedPairsToAOD = g.fAddConvertedPairsToAOD;
+
fhPtPhoton = g.fhPtPhoton ;
fhPhiPhoton = g.fhPhiPhoton ;
fhEtaPhoton = g.fhEtaPhoton ;
//Init
//Do some checks
- if(fCalorimeter == "PHOS" && !GetReader()->IsPHOSSwitchedOn()){
+ if(fCalorimeter == "PHOS" && !GetReader()->IsPHOSSwitchedOn() && NewOutputAOD()){
printf("AliAnaPhoton::Init() - !!STOP: You want to use PHOS in analysis but it is not read!! \n!!Check the configuration file!!\n");
abort();
}
- else if(fCalorimeter == "EMCAL" && !GetReader()->IsEMCALSwitchedOn()){
+ else if(fCalorimeter == "EMCAL" && !GetReader()->IsEMCALSwitchedOn() && NewOutputAOD()){
printf("AliAnaPhoton::Init() - !!STOP: You want to use EMCAL in analysis but it is not read!! \n!!Check the configuration file!!\n");
abort();
}
{
//Initialize the parameters of the analysis.
- SetOutputAODClassName("AliAODPWG4Particle");
- SetOutputAODName("PWG4Particle");
-
AddToHistogramsName("AnaPhoton_");
fCalorimeter = "PHOS" ;
fMinDist = 2.;
fMinDist2 = 4.;
fMinDist3 = 5.;
- fRejectTrackMatch = kTRUE ;
+ fMassCut = 0.03; //30 MeV
+
+ fRejectTrackMatch = kTRUE ;
+ fCheckConversion = kFALSE;
+ fAddConvertedPairsToAOD = kFALSE;
+
}
//__________________________________________________________________
pl = GetAODEMCAL();
//Fill AODCaloClusters and AODParticle with PHOS aods
- TLorentzVector mom ;
-
- for(Int_t icalo = 0; icalo < pl->GetEntriesFast(); icalo++){
- AliAODCaloCluster * calo = (AliAODCaloCluster*) (pl->At(icalo));
+ TLorentzVector mom, mom2 ;
+ Int_t nCaloClusters = pl->GetEntriesFast();
+ Bool_t * indexConverted = new Bool_t[nCaloClusters];
+ for (Int_t i = 0; i < nCaloClusters; i++) indexConverted[i] = kFALSE;
+
+ for(Int_t icalo = 0; icalo < nCaloClusters; icalo++){
+
+ AliAODCaloCluster * calo = (AliAODCaloCluster*) (pl->At(icalo));
//Cluster selection, not charged, with photon id and in fiducial cut
if(GetDebug() > 0) printf("AliAnaPhoton::MakeAnalysisFillAOD() - Origin of candidate, bit map %d\n",aodph.GetTag());
}//Work with stack also
+
+ // Check if cluster comes from a conversion in the material in front of the calorimeter
+ // Do invariant mass of all pairs, if mass is close to 0, then it is conversion.
+
+ if(fCheckConversion && nCaloClusters > 1){
+ Bool_t bConverted = kFALSE;
+ Int_t id2 = -1;
+
+ //Check if set previously as converted couple, if so skip its use.
+ if (indexConverted[icalo]) continue;
+
+ for(Int_t jcalo = icalo + 1 ; jcalo < nCaloClusters ; jcalo++) {
+ //Check if set previously as converted couple, if so skip its use.
+ if (indexConverted[jcalo]) continue;
+ //printf("Check Conversion indeces %d and %d\n",icalo,jcalo);
+ AliAODCaloCluster * calo2 = (AliAODCaloCluster*) (pl->At(jcalo)); //Get cluster kinematics
+ calo2->GetMomentum(mom2,vertex);
+ //Check only certain regions
+ Bool_t in2 = kTRUE;
+ if(IsFiducialCutOn()) in2 = GetFiducialCut()->IsInFiducialCut(mom2,fCalorimeter) ;
+ if(!in2) continue;
+
+ //Get mass of pair, if small, take this pair.
+ //printf("\t both in calo, mass %f, cut %f\n",(mom+mom2).M(),fMassCut);
+ if((mom+mom2).M() < fMassCut){
+ bConverted = kTRUE;
+ id2 = calo2->GetID();
+ indexConverted[jcalo]=kTRUE;
+ break;
+ }
+
+ }//Mass loop
+
+ if(bConverted){
+ if(fAddConvertedPairsToAOD){
+ //Create AOD of pair analysis
+ TLorentzVector mpair = mom+mom2;
+ AliAODPWG4Particle aodpair = AliAODPWG4Particle(mpair);
+ aodpair.SetLabel(aodph.GetLabel());
+ aodpair.SetInputFileIndex(input);
+
+ //printf("Index %d, Id %d\n",icalo, calo->GetID());
+ //Set the indeces of the original caloclusters
+ aodpair.SetCaloLabel(calo->GetID(),id2);
+ aodpair.SetDetector(fCalorimeter);
+ aodpair.SetPdg(aodph.GetPdg());
+ aodpair.SetTag(aodph.GetTag());
+
+ //Add AOD with pair object to aod branch
+ AddAODParticle(aodpair);
+ //printf("\t \t both added pair\n");
+ }
+
+ //Do not add the current calocluster
+ continue;
+ }//converted pair
+ }//check conversion
+ //printf("\t \t added single cluster %d\n",icalo);
+
//Add AOD with photon object to aod branch
AddAODParticle(aodph);
printf("Min Distance to Bad Channel 2 = %2.1f\n",fMinDist2);
printf("Min Distance to Bad Channel 3 = %2.1f\n",fMinDist3);
printf("Reject clusters with a track matched = %d\n",fRejectTrackMatch);
-
+ printf("Check Pair Conversion = %d\n",fCheckConversion);
+ printf("Add conversion pair to AOD = %d\n",fAddConvertedPairsToAOD);
+ printf("Conversion pair mass cut = %f\n",fMassCut);
printf(" \n") ;
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff