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