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 AliAODCaloCluster * 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 ;
37 //--- AliRoot system ---
38 class AliAODCaloCluster;
39 class AliAODPWG4Particle;
41 class AliEMCALPIDUtils;
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 AliCaloPID(const AliCaloPID & g) ; // cpy ctor
52 AliCaloPID & operator = (const AliCaloPID & g) ;//cpy assignment
53 virtual ~AliCaloPID() ;//virtual dtor
61 kNeutralHadron = 2112,
63 kNeutralUnknown = 130,
67 enum TagType {kPi0Decay, kEtaDecay, kOtherDecay, kConversion, kNoTag = -1};
69 void InitParameters();
71 Int_t GetPdg(const TString calo, const Double_t * pid, const Float_t energy) const ;
73 Int_t GetPdg(const TString calo,const TLorentzVector mom, const AliAODCaloCluster * cluster) const ;
75 TString GetPIDParametersList();
77 void SetPIDBits(const TString calo, const AliAODCaloCluster * cluster, AliAODPWG4Particle *aodph);
79 void Print(const Option_t * opt)const;
82 Float_t GetEMCALPhotonWeight() const { return fEMCALPhotonWeight ; }
83 Float_t GetEMCALPi0Weight() const { return fEMCALPi0Weight ; }
84 Float_t GetEMCALElectronWeight() const { return fEMCALElectronWeight ; }
85 Float_t GetEMCALChargeWeight() const { return fEMCALChargeWeight ; }
86 Float_t GetEMCALNeutralWeight() const { return fEMCALNeutralWeight ; }
87 Float_t GetPHOSPhotonWeight() const { return fPHOSPhotonWeight ; }
88 Float_t GetPHOSPi0Weight() const { return fPHOSPi0Weight ; }
89 Float_t GetPHOSElectronWeight() const { return fPHOSElectronWeight ; }
90 Float_t GetPHOSChargeWeight() const { return fPHOSChargeWeight ; }
91 Float_t GetPHOSNeutralWeight() const { return fPHOSNeutralWeight ; }
93 Bool_t IsPHOSPIDWeightFormulaOn() const { return fPHOSWeightFormula ; }
94 TFormula * GetPHOSPhotonWeightFormula() const { return fPHOSPhotonWeightFormula ; }
95 TFormula * GetPHOSPi0WeightFormula() const { return fPHOSPi0WeightFormula ; }
98 void SetEMCALPhotonWeight(Float_t w){ fEMCALPhotonWeight = w ; }
99 void SetEMCALPi0Weight(Float_t w){ fEMCALPi0Weight = w ; }
100 void SetEMCALElectronWeight(Float_t w){ fEMCALElectronWeight = w ; }
101 void SetEMCALChargeWeight(Float_t w){ fEMCALChargeWeight = w ; }
102 void SetEMCALNeutralWeight(Float_t w){ fEMCALNeutralWeight = w ; }
103 void SetPHOSPhotonWeight(Float_t w){ fPHOSPhotonWeight = w ; }
104 void SetPHOSPi0Weight(Float_t w){ fPHOSPi0Weight = w ; }
105 void SetPHOSElectronWeight(Float_t w){ fPHOSElectronWeight = w ; }
106 void SetPHOSChargeWeight(Float_t w){ fPHOSChargeWeight = w ; }
107 void SetPHOSNeutralWeight(Float_t w){ fPHOSNeutralWeight = w ; }
109 void UsePHOSPIDWeightFormula(Bool_t par) { fPHOSWeightFormula = par; }
110 void SetPHOSPhotonWeightFormula(TFormula * const photon) { fPHOSPhotonWeightFormula = photon; }
111 void SetPHOSPi0WeightFormula(TFormula * const pi0) { fPHOSPi0WeightFormula = pi0; }
113 //PID bits setters and getters
114 void SetDispersionCut(Float_t dcut ) {fDispCut = dcut; }
115 Float_t GetDispersionCut() const {return fDispCut ;}
117 void SetTOFCut(Float_t tcut ) {fTOFCut = tcut; }
118 Float_t GetTOFCut() const {return fTOFCut ;}
120 void SetDebug(Int_t deb) {fDebug=deb;}
121 Int_t GetDebug() const {return fDebug;}
123 void SwitchOnBayesianRecalculation() {fRecalculateBayesian = kTRUE ; }
124 void SwitchOffBayesianRecalculation() {fRecalculateBayesian = kFALSE; }
125 enum eventType{kLow,kHigh};
126 void SetLowParticleFlux() {fParticleFlux = kLow;}
127 void SetHighParticleFlux() {fParticleFlux = kHigh;}
131 Float_t fEMCALPhotonWeight; //Bayesian PID weight for photons in EMCAL
132 Float_t fEMCALPi0Weight; //Bayesian PID weight for pi0 in EMCAL
133 Float_t fEMCALElectronWeight; //Bayesian PID weight for electrons in EMCAL
134 Float_t fEMCALChargeWeight; //Bayesian PID weight for charged hadrons in EMCAL
135 Float_t fEMCALNeutralWeight; //Bayesian PID weight for neutral hadrons in EMCAL
136 Float_t fPHOSPhotonWeight; //Bayesian PID weight for photons in PHOS
137 Float_t fPHOSPi0Weight; //Bayesian PID weight for pi0 in PHOS
138 Float_t fPHOSElectronWeight; //Bayesian PID weight for electrons in PHOS
139 Float_t fPHOSChargeWeight; //Bayesian PID weight for charged hadrons in PHOS
140 Float_t fPHOSNeutralWeight; //Bayesian PID weight for neutral hadrons in PHOS
142 Bool_t fPHOSWeightFormula ; //Use parametrized weight threshold, function of energy
143 TFormula * fPHOSPhotonWeightFormula ; //Formula for photon weight
144 TFormula * fPHOSPi0WeightFormula ; //Formula for pi0 weight
146 Float_t fDispCut; //Cut on dispersion, used in PID evaluation
147 Float_t fTOFCut; //Cut on TOF, used in PID evaluation
149 Int_t fDebug; //Debug level
151 Bool_t fRecalculateBayesian; // Recalculate PID bayesian or use simple PID?
152 Int_t fParticleFlux; // Particle flux for setting PID parameters
154 AliEMCALPIDUtils * fEMCALPIDUtils; //Pointer to EMCALPID to redo the PID Bayesian calculation
158 ClassDef(AliCaloPID,4)
162 #endif //ALICALOPID_H