1 #ifndef ALIAODCONVERSIONMOTHER_H
2 #define ALIAODCONVERSIONMOTHER_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
6 ////////////////////////////////////////////////
7 //---------------------------------------------
8 // Class reconstructing the mother particle of conversion gammas
9 //---------------------------------------------
10 ////////////////////////////////////////////////
12 //Author Daniel Lohner (Daniel.Lohner@cern.ch)
14 #include "TLorentzVector.h"
15 #include "AliAODConversionParticle.h"
16 #include "AliAODConversionPhoton.h"
17 #include "AliKFConversionMother.h"
18 #include "AliKFParticle.h"
20 class AliAODConversionMother : public AliAODConversionParticle{
25 AliAODConversionMother();
27 // Constructor for ESD to AOD Conversion
28 AliAODConversionMother(AliKFConversionMother *kf);
30 //Constructor Decay Mother Particle
31 AliAODConversionMother(AliAODConversionPhoton *y1,AliAODConversionPhoton *y2);
32 // Constructor Mother particle from one photon and one meson
33 AliAODConversionMother(AliAODConversionMother *meson, AliAODConversionPhoton *gamma);
37 virtual ~AliAODConversionMother();
41 void SetMCLabel(Int_t i){fMCLabel=i;}
42 Int_t GetMCLabel(){return fMCLabel;}
43 TParticle *GetMCParticle(AliStack *fMCStack);
44 Bool_t IsTrueMeson(AliStack *fMCStack,Int_t pdgcode);
46 ///Set the Chi2 of reconstructed conversion gamma
47 void SetChi2(Float_t chi2) {fChi2 = chi2;}
49 //Get the Chi2 of particle
50 Float_t Chi2() const {return fChi2;}
52 ///Set track or MC labels
53 void SetLabel1(Int_t label){fLabel[0] = label;}
54 void SetLabel2(Int_t label){fLabel[1] = label;}
55 void SetLabel3(Int_t label){fLabel[2] = label;}
56 void SetLabels(Int_t label1, Int_t label2, Int_t label3 = 0){fLabel[0] = label1; fLabel[1] = label2; fLabel[2] = label3;}
58 Int_t GetLabel(Int_t i) const {return fLabel[i];}
59 Int_t GetLabel1() const {return fLabel[0];}
60 Int_t GetLabel2() const {return fLabel[1];}
61 Int_t GetLabel3() const {return fLabel[2];}
63 Double_t GetProductionRadius() const {return TMath::Sqrt(fProductionVtx[0]*fProductionVtx[0]+fProductionVtx[1]*fProductionVtx[1]);}
64 Double_t GetProductionX() const {return fProductionVtx[0];}
65 Double_t GetProductionY() const {return fProductionVtx[1];}
66 Double_t GetProductionZ() const {return fProductionVtx[2];}
68 Float_t GetDCABetweenPhotons() const {return fdcaBetweenPhotons;}
69 Float_t GetDCAZMotherPrimVtx() const {return fdcaZPrimVtx;}
70 Float_t GetDCARMotherPrimVtx() const {return fdcaRPrimVtx;}
71 UChar_t GetMesonQuality() const {return fQuality;}
73 Double_t GetOpeningAngle() const { return fOpeningAngle;}
75 Double_t GetAlpha() const { return fAlpha;}
77 void SetWeight(Double_t weight) {fWeight=weight;}
78 Double_t GetWeight() const {return fWeight;}
80 Float_t CalculateDistanceBetweenPhotons(AliAODConversionPhoton* y1, AliAODConversionPhoton* y2 , Double_t prodPoint[3]);
81 void CalculateDistanceOfClossetApproachToPrimVtx(const AliVVertex* primVertex);
82 void DetermineMesonQuality(AliAODConversionPhoton* y1, AliAODConversionPhoton* y2);
85 Int_t fLabel[3]; // Labels of the decay photons
86 Int_t fMCLabel; // MC Label
87 Float_t fChi2; // Chi sq of reconstructed mother
88 Double_t fOpeningAngle;
90 Double_t fWeight; // Weight for BG Calculation
91 Float_t fdcaBetweenPhotons; // dca between the two photons
92 Double_t fProductionVtx[3]; // Production vertex
93 Float_t fdcaZPrimVtx; // dca Z of meson to primary vertex
94 Float_t fdcaRPrimVtx; // dca R of meson to primary vertex
95 UChar_t fQuality; // Quality of the meson:
97 // 1: both photons quality 1
98 // 2: 1 photon quality 1, 1 photon quality 2
99 // 3: 1 photon quality 1, 1 photon quality 3
100 // 4: both photons quality 2
101 // 5: 1 photon quality 2, 1 photon quality 3
102 // 6: both photons quality 3
105 ClassDef(AliAODConversionMother,4)