"RapidityMesonCut", //4
"RCut", //5
"AlphaMesonCut", //6
- "Chi2MesonCut", //7
+ "SelectionWindow", //7
"SharedElectronCuts", //8
"RejectToCloseV0s", //9
"UseMCPSmearing", //10
fHistograms(NULL),
fMesonKind(0),
fMaxR(200),
- fChi2CutMeson(1000),
+ fSelectionLow(0.08),
+ fSelectionHigh(0.145),
fAlphaMinCutMeson(0),
fAlphaCutMeson(1),
fRapidityCutMeson(1),
fHistograms(NULL),
fMesonKind(ref.fMesonKind),
fMaxR(ref.fMaxR),
- fChi2CutMeson(ref.fChi2CutMeson),
+ fSelectionLow(ref.fSelectionLow),
+ fSelectionHigh(ref.fSelectionHigh),
fAlphaMinCutMeson(ref.fAlphaMinCutMeson),
fAlphaCutMeson(ref.fAlphaCutMeson),
fRapidityCutMeson(ref.fRapidityCutMeson),
return kFALSE;
}
+//________________________________________________________________________
+Bool_t AliConversionMesonCuts::MesonIsSelectedMCPiPlPiMiPiZero(TParticle *fMCMother,AliStack *fMCStack, Int_t &labelNegPion, Int_t &labelPosPion, Int_t &labelNeutPion, Double_t fRapidityShift){
+
+ // Returns true for all pions within acceptance cuts for decay into 2 photons
+ // If bMCDaughtersInAcceptance is selected, it requires in addition that both daughter photons are within acceptance cuts
+
+ if( !fMCStack )return kFALSE;
+
+ if( !(fMCMother->GetPdgCode() == 221 || fMCMother->GetPdgCode() == 223) ) return kFALSE;
+
+ if( fMCMother->R()>fMaxR ) return kFALSE; // cuts on distance from collision point
+
+ Double_t rapidity = 10.;
+
+ if( fMCMother->Energy() - fMCMother->Pz() == 0 || fMCMother->Energy() + fMCMother->Pz() == 0 ){
+ rapidity=8.-fRapidityShift;
+ }
+ else{
+ rapidity = 0.5*(TMath::Log((fMCMother->Energy()+fMCMother->Pz()) / (fMCMother->Energy()-fMCMother->Pz())))-fRapidityShift;
+ }
+
+ // Rapidity Cut
+ if( abs(rapidity) > fRapidityCutMeson )return kFALSE;
+
+ // Select only -> pi+ pi- pi0
+ if( fMCMother->GetNDaughters() != 3 )return kFALSE;
+
+ TParticle *posPion = 0x0;
+ TParticle *negPion = 0x0;
+ TParticle *neutPion = 0x0;
+
+ for(Int_t index= fMCMother->GetFirstDaughter();index<= fMCMother->GetLastDaughter();index++){
+
+ TParticle* temp = (TParticle*)fMCStack->Particle( index );
+ switch( temp->GetPdgCode() ) {
+ case 211:
+ posPion = temp;
+ labelPosPion = index;
+ break;
+ case -211:
+ negPion = temp;
+ labelNegPion = index;
+ break;
+ case 111:
+ neutPion = temp;
+ labelNeutPion = index;
+ break;
+ }
+ }
+
+ if( posPion && negPion && neutPion ) return kTRUE;
+ return kFALSE;
+}
+
+
//________________________________________________________________________
Bool_t AliConversionMesonCuts::MesonIsSelectedMCChiC(TParticle *fMCMother,AliStack *fMCStack,Int_t & labelelectronChiC, Int_t & labelpositronChiC, Int_t & labelgammaChiC, Double_t fRapidityShift){
// Returns true for all ChiC within acceptance cuts for decay into JPsi + gamma -> e+ + e- + gamma
return kFALSE;
}
-
-
///________________________________________________________________________
Bool_t AliConversionMesonCuts::MesonIsSelected(AliAODConversionMother *pi0,Bool_t IsSignal, Double_t fRapidityShift)
{
if(!SetCut(cutIds(ii),fCuts[ii]))return kFALSE;
}
- //PrintCuts();
+ PrintCutsWithValues();
return kTRUE;
}
///________________________________________________________________________
UpdateCutString();
return kTRUE;
} else return kFALSE;
- case kchi2MesonCut:
- if( SetChi2MesonCut(value)) {
- fCuts[kchi2MesonCut] = value;
+ case kSelectionCut:
+ if( SetSelectionWindowCut(value)) {
+ fCuts[kSelectionCut] = value;
UpdateCutString();
return kTRUE;
} else return kFALSE;
}
}
+///________________________________________________________________________
+void AliConversionMesonCuts::PrintCutsWithValues() {
+ // Print out current Cut Selection with values
+ printf("\nMeson cutnumber \n");
+ for(Int_t ic = 0; ic < kNCuts; ic++) {
+ printf("%d",fCuts[ic]);
+ }
+ printf("\n\n");
+
+ printf("Meson cuts \n");
+ printf("\t |y| < %3.2f \n", fRapidityCutMeson);
+ printf("\t theta_{open} < %3.2f\n", fOpeningAngle);
+ if (!fAlphaPtDepCut) printf("\t %3.2f < alpha < %3.2f\n", fAlphaMinCutMeson, fAlphaCutMeson);
+ printf("\t dca_{gamma,gamma} > %3.2f\n", fDCAGammaGammaCut);
+ printf("\t dca_{R, prim Vtx} > %3.2f\n", fDCARMesonPrimVtxCut);
+ printf("\t dca_{Z, prim Vtx} > %3.2f\n\n", fDCAZMesonPrimVtxCut);
+ printf("\t Meson selection window for further analysis %3.3f > M_{gamma,gamma} > %3.3f\n\n", fSelectionLow, fSelectionHigh);
+
+ printf("Meson BG settings \n");
+ if (!fDoBG){
+ if (!fUseRotationMethodInBG & !fUseTrackMultiplicityForBG) printf("\t BG scheme: mixing V0 mult \n");
+ if (!fUseRotationMethodInBG & fUseTrackMultiplicityForBG) printf("\t BG scheme: mixing track mult \n");
+ if (fUseRotationMethodInBG )printf("\t BG scheme: rotation \n");
+ if (fdoBGProbability) printf("\t -> use BG probability \n");
+ if (fBackgroundHandler) printf("\t -> use new BG handler \n");
+ printf("\t depth of pool: %d\n", fNumberOfBGEvents);
+ if (fUseRotationMethodInBG )printf("\t degree's for BG rotation: %d\n", fnDegreeRotationPMForBG);
+ }
+
+}
+
+
///________________________________________________________________________
Bool_t AliConversionMesonCuts::SetMesonKind(Int_t mesonKind){
// Set Cut
}
///________________________________________________________________________
-Bool_t AliConversionMesonCuts::SetChi2MesonCut(Int_t chi2MesonCut){
+Bool_t AliConversionMesonCuts::SetSelectionWindowCut(Int_t selectionCut){
// Set Cut
- switch(chi2MesonCut){
- case 0: // 100.
- fChi2CutMeson = 100.;
- break;
- case 1: // 50.
- fChi2CutMeson = 50.;
- break;
- case 2: // 30.
- fChi2CutMeson = 30.;
- break;
+ switch(selectionCut){
+ case 0:
+ fSelectionLow = 0.08;
+ fSelectionHigh = 0.145;
+ break;
+ case 1:
+ fSelectionLow = 0.1;
+ fSelectionHigh = 0.145;
+ break;
+ case 2:
+ fSelectionLow = 0.11;
+ fSelectionHigh = 0.145;
+ break;
case 3:
- fChi2CutMeson = 200.;
+ fSelectionLow = 0.12;
+ fSelectionHigh = 0.145;
break;
case 4:
- fChi2CutMeson = 500.;
+ fSelectionLow = 0.1;
+ fSelectionHigh = 0.15;
break;
case 5:
- fChi2CutMeson = 1000.;
+ fSelectionLow = 0.11;
+ fSelectionHigh = 0.15;
break;
+ case 6:
+ fSelectionLow = 0.12;
+ fSelectionHigh = 0.15;
+ break;
+
default:
- cout<<"Warning: Chi2MesonCut not defined "<<chi2MesonCut<<endl;
+ cout<<"Warning: SelectionCut not defined "<<selectionCut<<endl;
return kFALSE;
}
return kTRUE;
photon->SetPz(facPBrem* (1+facPSig)* P*cos(theta)) ;
photon->SetE(photon->P());
}
+///________________________________________________________________________
+void AliConversionMesonCuts::SmearVirtualPhoton(AliAODConversionPhoton* photon)
+{
+
+ if (photon==NULL) return;
+ Double_t facPBrem = 1.;
+ Double_t facPSig = 0.;
+
+ Double_t phi=0.;
+ Double_t theta=0.;
+ Double_t P=0.;
+
+
+ P=photon->P();
+ phi=photon->Phi();
+ if( photon->P()!=0){
+ theta=acos( photon->Pz()/ photon->P());
+ }
+
+ if( fPSigSmearing != 0. || fPSigSmearingCte!=0. ){
+ facPSig = TMath::Sqrt(fPSigSmearingCte*fPSigSmearingCte+fPSigSmearing*fPSigSmearing*P*P)*fRandom.Gaus(0.,1.);
+ }
+
+ if( fPBremSmearing != 1.){
+ if(fBrem!=NULL){
+ facPBrem = fBrem->GetRandom();
+ }
+ }
+
+ photon->SetPx(facPBrem* (1+facPSig)* P*sin(theta)*cos(phi)) ;
+ photon->SetPy(facPBrem* (1+facPSig)* P*sin(theta)*sin(phi)) ;
+ photon->SetPz(facPBrem* (1+facPSig)* P*cos(theta)) ;
+
+}
+///________________________________________________________________________
+TLorentzVector AliConversionMesonCuts::SmearElectron(TLorentzVector particle)
+{
+
+ //if (particle==0) return;
+ Double_t facPBrem = 1.;
+ Double_t facPSig = 0.;
+
+ Double_t phi=0.;
+ Double_t theta=0.;
+ Double_t P=0.;
+
+
+ P=particle.P();
+
+
+ phi=particle.Phi();
+ if (phi < 0.) phi += 2. * TMath::Pi();
+
+ if( particle.P()!=0){
+ theta=acos( particle.Pz()/ particle.P());
+ }
+
+
+ Double_t fPSigSmearingHalf = fPSigSmearing / 2.0; //The parameter was set for gammas with 2 particles and here we have just one electron
+ Double_t sqrtfPSigSmearingCteHalf = fPSigSmearingCte / 2.0 ; //The parameter was set for gammas with 2 particles and here we have just one electron
+
+
+
+ if( fPSigSmearingHalf != 0. || sqrtfPSigSmearingCteHalf!=0. ){
+ facPSig = TMath::Sqrt(sqrtfPSigSmearingCteHalf*sqrtfPSigSmearingCteHalf+fPSigSmearingHalf*fPSigSmearingHalf*P*P)*fRandom.Gaus(0.,1.);
+ }
+
+ if( fPBremSmearing != 1.){
+ if(fBrem!=NULL){
+ facPBrem = fBrem->GetRandom();
+ }
+ }
+
+ TLorentzVector SmearedParticle;
+
+ SmearedParticle.SetXYZM( facPBrem* (1+facPSig)* P*sin(theta)*cos(phi) , facPBrem* (1+facPSig)* P*sin(theta)*sin(phi) ,
+ facPBrem* (1+facPSig)* P*cos(theta) , TDatabasePDG::Instance()->GetParticle( ::kElectron )->Mass()) ;
+
+ //particle.SetPx(facPBrem* (1+facPSig)* P*sin(theta)*cos(phi)) ;
+ //particle.SetPy(facPBrem* (1+facPSig)* P*sin(theta)*sin(phi)) ;
+ //particle.SetPz(facPBrem* (1+facPSig)* P*cos(theta)) ;
+
+ return SmearedParticle;
+
+}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff