3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
7 //_________________________________________________________________________
8 // Class for PID selection with calorimeters
9 // The Output of the 2 main methods GetPdg is a PDG number identifying the cluster,
10 // being kPhoton, kElectron, kPi0 ... as defined in the header file
11 // - GetPdg(const TString calo, const Double_t * pid, const Float_t energy)
12 // Reads the PID weights array of the ESDs and depending on its magnitude identifies the particle
13 // - GetPdg(const TString calo,const TLorentzVector mom, const AliVCluster * cluster)
14 // Recalcultes PID, the bayesian or any new one to be implemented in the future
15 // Right now only the possibility to recalculate EMCAL with bayesian and simple PID.
16 // In order to recalculate Bayesian, it is necessary to load the EMCALUtils library
17 // and do SwitchOnBayesianRecalculation().
18 // To change the PID parameters from Low to High like the ones by default, use the constructor
20 // where flux is AliCaloPID::kLow or AliCaloPID::kHigh
21 // If it is necessary to change the parameters use the constructor
22 // AliCaloPID(AliEMCALPIDUtils *utils) and set the parameters before.
23 // - SetPIDBits: Simple PID, depending on the thresholds fDispCut fTOFCut and even the
24 // result of the PID bayesian a different PID bit is set.
26 // All these methods can be called in the analysis you are interested.
28 //*-- Author: Gustavo Conesa (INFN-LNF)
30 // --- ROOT system ---
33 class TLorentzVector ;
38 //--- AliRoot system ---
40 class AliAODPWG4Particle;
41 class AliEMCALPIDUtils;
42 class AliCalorimeterUtils;
44 class AliCaloPID : public TObject {
48 AliCaloPID() ; // ctor
49 AliCaloPID(const Int_t particleFlux) ; // ctor, to be used when recalculating bayesian PID
50 AliCaloPID(const TTask * emcalpid) ; // ctor, to be used when recalculating bayesian PID and need different parameters
51 virtual ~AliCaloPID() ;//virtual dtor
54 AliCaloPID & operator = (const AliCaloPID & g) ;//cpy assignment
55 AliCaloPID(const AliCaloPID & g) ; // cpy ctor
65 kNeutralHadron = 2112,
67 kNeutralUnknown = 130,
71 enum TagType {kPi0Decay, kEtaDecay, kOtherDecay, kConversion, kNoTag = -1};
73 TList * GetCreateOutputObjects();
75 void InitParameters();
77 Int_t GetPdg(const TString calo, const Double_t * pid, const Float_t energy) const ;
79 Int_t GetPdg(const TString calo,const TLorentzVector mom, const AliVCluster * cluster) const ;
81 TString GetPIDParametersList();
83 void SetPIDBits(const TString calo, const AliVCluster * cluster, AliAODPWG4Particle *aodph, const AliCalorimeterUtils* cu);
85 void Print(const Option_t * opt)const;
88 Float_t GetEMCALPhotonWeight() const { return fEMCALPhotonWeight ; }
89 Float_t GetEMCALPi0Weight() const { return fEMCALPi0Weight ; }
90 Float_t GetEMCALElectronWeight() const { return fEMCALElectronWeight ; }
91 Float_t GetEMCALChargeWeight() const { return fEMCALChargeWeight ; }
92 Float_t GetEMCALNeutralWeight() const { return fEMCALNeutralWeight ; }
93 Float_t GetPHOSPhotonWeight() const { return fPHOSPhotonWeight ; }
94 Float_t GetPHOSPi0Weight() const { return fPHOSPi0Weight ; }
95 Float_t GetPHOSElectronWeight() const { return fPHOSElectronWeight ; }
96 Float_t GetPHOSChargeWeight() const { return fPHOSChargeWeight ; }
97 Float_t GetPHOSNeutralWeight() const { return fPHOSNeutralWeight ; }
99 // Bool_t IsPHOSPIDWeightFormulaOn() const { return fPHOSWeightFormula ; }
100 // TFormula * GetPHOSPhotonWeightFormula() const { return fPHOSPhotonWeightFormula ; }
101 // TFormula * GetPHOSPi0WeightFormula() const { return fPHOSPi0WeightFormula ; }
104 void SetEMCALPhotonWeight(Float_t w){ fEMCALPhotonWeight = w ; }
105 void SetEMCALPi0Weight(Float_t w){ fEMCALPi0Weight = w ; }
106 void SetEMCALElectronWeight(Float_t w){ fEMCALElectronWeight = w ; }
107 void SetEMCALChargeWeight(Float_t w){ fEMCALChargeWeight = w ; }
108 void SetEMCALNeutralWeight(Float_t w){ fEMCALNeutralWeight = w ; }
109 void SetPHOSPhotonWeight(Float_t w){ fPHOSPhotonWeight = w ; }
110 void SetPHOSPi0Weight(Float_t w){ fPHOSPi0Weight = w ; }
111 void SetPHOSElectronWeight(Float_t w){ fPHOSElectronWeight = w ; }
112 void SetPHOSChargeWeight(Float_t w){ fPHOSChargeWeight = w ; }
113 void SetPHOSNeutralWeight(Float_t w){ fPHOSNeutralWeight = w ; }
115 // void UsePHOSPIDWeightFormula(Bool_t par) { fPHOSWeightFormula = par; }
116 // void SetPHOSPhotonWeightFormula(TFormula * const photon) { fPHOSPhotonWeightFormula = photon; }
117 // void SetPHOSPi0WeightFormula(TFormula * const pi0) { fPHOSPi0WeightFormula = pi0; }
119 //PID bits setters and getters
121 Bool_t IsTrackMatched(const AliVCluster * cluster, const AliCalorimeterUtils* cu) const ;
123 void SetDispersionCut(Float_t dcut ) {fDispCut = dcut; }
124 Float_t GetDispersionCut() const {return fDispCut ;}
126 void SetTOFCut(Float_t tcut ) {fTOFCut = tcut; }
127 Float_t GetTOFCut() const {return fTOFCut ;}
129 void SetDebug(Int_t deb) {fDebug=deb;}
130 Int_t GetDebug() const {return fDebug;}
132 void SwitchOnBayesianRecalculation() {fRecalculateBayesian = kTRUE ; }
133 void SwitchOffBayesianRecalculation() {fRecalculateBayesian = kFALSE; }
134 enum eventType{kLow,kHigh};
135 void SetLowParticleFlux() {fParticleFlux = kLow;}
136 void SetHighParticleFlux() {fParticleFlux = kHigh;}
140 //Histogrammes setters and getters
142 virtual void SetHistoERangeAndNBins(Float_t min, Float_t max, Int_t n) {
148 virtual void SetHistoDEtaRangeAndNBins(Float_t min, Float_t max, Int_t n) {
149 fHistoNDEtaBins = n ;
150 fHistoDEtaMax = max ;
151 fHistoDEtaMin = min ;
155 virtual void SetHistoDPhiRangeAndNBins(Float_t min, Float_t max, Int_t n) {
156 fHistoNDPhiBins = n ;
157 fHistoDPhiMax = max ;
158 fHistoDPhiMin = min ;
165 Float_t fEMCALPhotonWeight; //Bayesian PID weight for photons in EMCAL
166 Float_t fEMCALPi0Weight; //Bayesian PID weight for pi0 in EMCAL
167 Float_t fEMCALElectronWeight; //Bayesian PID weight for electrons in EMCAL
168 Float_t fEMCALChargeWeight; //Bayesian PID weight for charged hadrons in EMCAL
169 Float_t fEMCALNeutralWeight; //Bayesian PID weight for neutral hadrons in EMCAL
170 Float_t fPHOSPhotonWeight; //Bayesian PID weight for photons in PHOS
171 Float_t fPHOSPi0Weight; //Bayesian PID weight for pi0 in PHOS
172 Float_t fPHOSElectronWeight; //Bayesian PID weight for electrons in PHOS
173 Float_t fPHOSChargeWeight; //Bayesian PID weight for charged hadrons in PHOS
174 Float_t fPHOSNeutralWeight; //Bayesian PID weight for neutral hadrons in PHOS
176 // Bool_t fPHOSWeightFormula ; //Use parametrized weight threshold, function of energy
177 // TFormula * fPHOSPhotonWeightFormula ; //Formula for photon weight
178 // TFormula * fPHOSPi0WeightFormula ; //Formula for pi0 weight
180 Float_t fDispCut; //Cut on dispersion, used in PID evaluation
181 Float_t fTOFCut; //Cut on TOF, used in PID evaluation
183 Int_t fDebug; //Debug level
185 Bool_t fRecalculateBayesian; // Recalculate PID bayesian or use simple PID?
186 Int_t fParticleFlux; // Particle flux for setting PID parameters
187 AliEMCALPIDUtils * fEMCALPIDUtils; // Pointer to EMCALPID to redo the PID Bayesian calculation
190 Int_t fHistoNEBins ; // Number of bins in cluster E axis
191 Float_t fHistoEMax ; // Maximum value of cluster E histogram range
192 Float_t fHistoEMin ; // Minimum value of cluster E histogram range
193 Int_t fHistoNDEtaBins ; // Number of bins in dEta (cluster-track) axis
194 Float_t fHistoDEtaMax ; // Maximum value of dEta (cluster-track) histogram range
195 Float_t fHistoDEtaMin ; // Minimum value of dEta (cluster-track) histogram range
196 Int_t fHistoNDPhiBins ; // Number of bins in dPhi axis
197 Float_t fHistoDPhiMax ; // Maximum value of dPhi (cluster-track) histogram range
198 Float_t fHistoDPhiMin ; // Minimum value of dPhi (cluster-track) histogram range
200 TH2F * fhTrackMatchedDEta ; //! Eta distance between track and cluster vs cluster E
201 TH2F * fhTrackMatchedDPhi ; //! Phi distance between track and cluster vs cluster E
202 TH2F * fhTrackMatchedDEtaDPhi ; //! Eta vs Phi distance between track and cluster, E cluster > 0.5 GeV
205 ClassDef(AliCaloPID,5)
209 #endif //ALICALOPID_H