1 #ifndef ALIANAPARTICLEHADRONCORRELATION_H
2 #define ALIANAPARTICLEHADRONCORRELATION_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
7 //_________________________________________________________________________
8 // Class that contains the algorithm for the analysis of particle - hadron correlations
9 // Particle (for example direct gamma) must be found in a previous analysis
10 //-- Author: Gustavo Conesa (INFN-LNF)
12 // Modified by Yaxian Mao:
13 // 1. add the UE subtraction for corrlation study
14 // 2. change the correlation variable
15 // 3. Only use leading particle(cluster/track) as trigger for correlation (2010/07/02)
16 // 4. Make decay photon-hadron correlations where decay contribute pi0 mass (2010/09/09)
17 // 5. fill the pout to extract kt at the end, also to study charge asymmetry(2010/10/06)
18 // 6. Add the possibality for event selection analysis based on vertex and multiplicity bins (10/10/2010)
19 // 7. change the way of delta phi cut for UE study due to memory issue (reduce histograms)
21 // --- ROOT system ---
24 // --- Analysis system ---
25 #include "AliAnaPartCorrBaseClass.h"
26 class AliAODPWG4ParticleCorrelation ;
28 class AliAnaParticleHadronCorrelation : public AliAnaPartCorrBaseClass {
31 AliAnaParticleHadronCorrelation() ; // default ctor
32 virtual ~AliAnaParticleHadronCorrelation() {;} //virtual dtor
34 AliAnaParticleHadronCorrelation(const AliAnaParticleHadronCorrelation & ph) ; // cpy ctor
35 AliAnaParticleHadronCorrelation & operator = (const AliAnaParticleHadronCorrelation & ph) ;//cpy assignment
39 TObjString * GetAnalysisCuts();
40 TList * GetCreateOutputObjects();
42 Double_t GetDeltaPhiMaxCut() const {return fDeltaPhiMaxCut ; }
43 Double_t GetDeltaPhiMinCut() const {return fDeltaPhiMinCut ; }
44 void SetDeltaPhiCutRange(Double_t phimin, Double_t phimax)
45 {fDeltaPhiMaxCut =phimax; fDeltaPhiMinCut =phimin;}
47 Double_t GetUeDeltaPhiMaxCut() const {return fUeDeltaPhiMaxCut ; }
48 Double_t GetUeDeltaPhiMinCut() const {return fUeDeltaPhiMinCut ; }
49 void SetUeDeltaPhiCutRange(Double_t uephimin, Double_t uephimax)
50 {fUeDeltaPhiMaxCut =uephimax; fUeDeltaPhiMinCut =uephimin;}
51 Bool_t IsSeveralUEOn() const {return fMakeSeveralUE ; }
52 void SwitchOnSeveralUECalculation() { fMakeSeveralUE = kTRUE;}
53 void SwitchOffSeveralUECalculation() { fMakeSeveralUE = kFALSE;}
55 // Do trigger-neutral correlation
56 Bool_t DoNeutralCorr() const {return fNeutralCorr ; }
57 void SwitchOnNeutralCorr() { fNeutralCorr = kTRUE;}
58 void SwitchOffNeutralCorr() { fNeutralCorr = kFALSE;}
60 // Do decay-hadron correlation if it is pi0 trigger
61 Bool_t IsPi0Trigger() const {return fPi0Trigger ; }
62 void SwitchOnDecayCorr() { fPi0Trigger = kTRUE;}
63 void SwitchOffDecayCorr() { fPi0Trigger = kFALSE;}
65 Bool_t OnlyIsolated() const {return fSelectIsolated ; }
66 void SelectIsolated(Bool_t select) {fSelectIsolated = select ; }
68 void InitParameters();
70 void Print(const Option_t * opt) const;
72 void MakeChargedCorrelation(AliAODPWG4ParticleCorrelation * aodParticle,TObjArray* const pl, const Bool_t bFillHisto) ;
73 void MakeNeutralCorrelation(AliAODPWG4ParticleCorrelation * aodParticle,TObjArray* const pl, const Bool_t bFillHisto) ;
75 //void MakeNeutralCorrelationFillAOD(AliAODPWG4ParticleCorrelation* const aodParticle, TObjArray* const pl, TString detector) ;
76 //void MakeNeutralCorrelationFillHistograms(AliAODPWG4ParticleCorrelation* const aodParticle) ;
78 void MakeAnalysisFillAOD() ;
79 void MakeAnalysisFillHistograms() ;
81 //Bool_t SelectCluster(AliVCluster * calo, Double_t *vertex, TLorentzVector & mom, Int_t & pdg) ;
83 void SetPi0AODBranchName(TString pi0list) {fPi0AODBranchName = pi0list;}
87 Double_t fDeltaPhiMaxCut ; // Minimum Delta Phi Gamma-Hadron
88 Double_t fDeltaPhiMinCut ; // Maximum Delta Phi Gamma-Hadron
89 Bool_t fSelectIsolated ; // Select only trigger particles isolated
90 Bool_t fMakeSeveralUE ; // Do analysis for several underlying events contribution
91 Double_t fUeDeltaPhiMaxCut ; // Minimum Delta Phi Gamma-Underlying Hadron
92 Double_t fUeDeltaPhiMinCut ; // Maximum Delta Phi Gamma-Underlying Hadron
93 TString fPi0AODBranchName; // Name of AOD branch with pi0, not trigger
94 Bool_t fNeutralCorr ; // switch the analysis with neutral particles
95 Bool_t fPi0Trigger ; // switch the analysis with decay photon from pi0 trigger
98 // TH2F * fhNclustersNtracks; //charge and cluster multiplicity distribution
100 TH1F * fhPtLeading; //! pT distribution of leading particles
101 TH2F * fhPhiLeading; //! phi distribution vs pT of leading particles
102 TH2F * fhEtaLeading; //! eta distribution vs pT of leading particles
104 //trigger-charged histograms
105 TH2F * fhDeltaPhiDeltaEtaCharged ; //! differences of eta and phi between trigger and charged hadrons
106 TH2F * fhPhiCharged ; //! Phi distribution of charged particles
107 TH2F * fhEtaCharged ; //! Eta distribution of charged particles
108 TH2F * fhDeltaPhiCharged ; //! Difference of charged particle phi and trigger particle phi as function of trigger particle pT
109 TH2F * fhDeltaEtaCharged ; //! Difference of charged particle eta and trigger particle eta as function of trigger particle pT
110 TH2F * fhDeltaPhiChargedPt ; //! Difference of charged particle phi and trigger particle phi as function of charged particle pT
111 TH2F * fhDeltaPhiUeChargedPt ; //! Difference of charged particle from underlying events phi and trigger particle phi as function of charged particle pT
112 TH2F * fhPtImbalanceCharged ; //! Trigger particle -charged hadron momentim imbalance histogram
113 TH2F * fhPtImbalanceUeCharged ; //! Trigger particle -underlying charged hadron momentim imbalance histogram
114 TH2F * fhPtImbalancePosCharged ; //! Trigger particle -positive charged hadron momentim imbalance histogram
115 TH2F * fhPtImbalanceNegCharged ; //! Trigger particle -negative charged hadron momentim imbalance histogram
116 //with different imblance varible defination HBP distribution
117 TH2F * fhPtHbpCharged ; //! Trigger particle -charged hadron momentim HBP histogram
118 TH2F * fhPtHbpUeCharged ; //! Trigger particle -underlying charged hadron momentim HBP histogram
120 //if several UE calculation is on, most useful for jet-jet events contribution
121 TH2F * fhDeltaPhiUeLeftCharged ; //! Difference of charged particle from underlying events phi and trigger particle phi as function of charged particle pT
122 TH2F * fhDeltaPhiUeRightCharged ; //! Difference of charged particle from underlying events phi and trigger particle phi
123 TH2F * fhPtImbalanceUeLeftCharged ; //! Trigger particle -underlying charged hadron momentim imbalance histogram
124 TH2F * fhPtImbalanceUeRightCharged ; //! Trigger particle -underlying charged hadron momentim imbalance histogram
125 TH2F * fhPtHbpUeLeftCharged ; //! Trigger particle -underlying charged hadron momentim HBP histogram
126 TH2F * fhPtHbpUeRightCharged ; //! Trigger particle -underlying charged hadron momentim HBP histogram
128 //for pout and kt extraction
129 TH3D * fhPoutPtTrigPtAssoc ; // Pout =associated pt*sin(delta phi) distribution vs trigger pt vs associated pt
130 TH3D * fhUePoutPtTrigPtAssoc ; // UE Pout =associated pt*sin(delta phi) distribution vs trigger pt vs associated pt
131 TH2F * fhPtTrigCharged ; //trigger and correlated particl pt, to be used for mean value for kt
133 //if different multiplicity analysis asked
134 TH3D ** fhTrigDeltaPhiDeltaEtaCharged ; //! differences of eta and phi between trigger and charged hadrons
135 TH2F ** fhTrigCorr ; //! Trigger particle -charged hadron momentim imbalance histogram
136 TH2F ** fhTrigUeCorr ; //! Trigger particle -UE charged hadron momentim imbalance histogram
138 //trigger-neutral histograms
139 TH2F * fhDeltaPhiDeltaEtaNeutral ; //! differences of eta and phi between trigger and neutral hadrons (pi0)
140 TH2F * fhPhiNeutral ; //! Phi distribution of neutral particles
141 TH2F * fhEtaNeutral ; //! Eta distribution of neutral particles
142 TH2F * fhDeltaPhiNeutral ; //! Difference of neutral particle phi and trigger particle phi as function of trigger particle pT
143 TH2F * fhDeltaEtaNeutral ; //! Difference of neutral particle eta and trigger particle eta as function of trigger particle pT
144 TH2F * fhDeltaPhiNeutralPt ; //! Difference of neutral particle phi and trigger particle phi as function of neutral particle particle pT
145 TH2F * fhDeltaPhiUeNeutralPt ; //! Difference of neutral particle phi and trigger particle phi as function of neutral particle particle pT
146 TH2F * fhPtImbalanceNeutral ; //! Trigger particle - neutral hadron momentum imbalance histogram
147 TH2F * fhPtImbalanceUeNeutral ; //! Trigger particle - neutral hadron momentum imbalance histogram
148 //with different imblance varible defination HBP distribution
149 TH2F * fhPtHbpNeutral ; //! Trigger particle -neutral particle momentim HBP histogram
150 TH2F * fhPtHbpUeNeutral ; //! Trigger particle -underlying neutral hadron momentim HBP histogram
152 //if several UE calculation is on, most useful for jet-jet events contribution
153 TH2F * fhDeltaPhiUeLeftNeutral ; //! Difference of charged particle from underlying events phi and trigger particle phi as function of neutral particle pT
154 TH2F * fhDeltaPhiUeRightNeutral ; //! Difference of charged particle from underlying events phi and trigger particle phi
155 TH2F * fhPtImbalanceUeLeftNeutral ; //! Trigger particle -underlying neutral hadron momentim imbalance histogram
156 TH2F * fhPtImbalanceUeRightNeutral ; //! Trigger particle -underlying neutral hadron momentim imbalance histogram
157 TH2F * fhPtHbpUeLeftNeutral ; //! Trigger particle -underlying neutral hadron momentim HBP histogram
158 TH2F * fhPtHbpUeRightNeutral ; //! Trigger particle -underlying neutral hadron momentim HBP histogram
160 //for decay photon trigger correlation
161 TH2F * fhPtPi0DecayRatio ; //! for pi0 pt and ratio of decay photon pt
162 TH2F * fhDeltaPhiDecayCharged ; //! Difference of charged particle phi and decay trigger
163 TH2F * fhPtImbalanceDecayCharged ; //! Trigger particle (decay from pi0)-charged hadron momentim imbalance histogram
164 TH2F * fhDeltaPhiDecayNeutral ; //! Difference of neutral particle phi and decay trigger
165 TH2F * fhPtImbalanceDecayNeutral ; //! Trigger particle (decay from pi0)-neutral hadron momentim imbalance histogram
168 ClassDef(AliAnaParticleHadronCorrelation,5)
172 #endif //ALIANAPARTICLEHADRONCORRELATION_H