]> git.uio.no Git - u/mrichter/AliRoot.git/blame - PWG/CaloTrackCorrBase/AliCaloPID.h
More convenient file names
[u/mrichter/AliRoot.git] / PWG / CaloTrackCorrBase / AliCaloPID.h
CommitLineData
1c5acb87 1#ifndef ALICALOPID_H
2#define ALICALOPID_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
1c5acb87 5
6//_________________________________________________________________________
bdd2a262 7// Class for PID selection with calorimeters
49b5c49b 8// The Output of the main method GetIdentifiedParticleType is a PDG number identifying the cluster,
bdd2a262 9// being kPhoton, kElectron, kPi0 ... as defined in the header file
3c1d9afb 10// - GetIdentifiedParticleType(const AliVCluster * cluster)
49b5c49b 11// Assignes a PID tag to the cluster, right now there is the possibility to : use bayesian weights from reco,
12// recalculate them (EMCAL) or use other procedures not used in reco.
bdd2a262 13// In order to recalculate Bayesian, it is necessary to load the EMCALUtils library
14// and do SwitchOnBayesianRecalculation().
15// To change the PID parameters from Low to High like the ones by default, use the constructor
16// AliCaloPID(flux)
17// where flux is AliCaloPID::kLow or AliCaloPID::kHigh
18// If it is necessary to change the parameters use the constructor
19// AliCaloPID(AliEMCALPIDUtils *utils) and set the parameters before.
49b5c49b 20
3c1d9afb 21// - GetGetIdentifiedParticleTypeFromBayesian(const Double_t * pid, const Float_t energy)
49b5c49b 22// Reads the PID weights array of the ESDs and depending on its magnitude identifies the particle,
3c1d9afb 23// executed when bayesian is ON by GetIdentifiedParticleType(const AliVCluster * cluster)
9a6fa057 24// - SetPIDBits: Simple PID, depending on the thresholds fLOCut fTOFCut and even the
bdd2a262 25// result of the PID bayesian a different PID bit is set.
26//
1c5acb87 27//
28//*-- Author: Gustavo Conesa (INFN-LNF)
29
30// --- ROOT system ---
31#include <TObject.h>
32class TString ;
33class TLorentzVector ;
a5fb4114 34#include <TFormula.h>
f21fc003 35class TList;
d39cba7e 36class TH2F ;
1c5acb87 37
38//--- AliRoot system ---
0ae57829 39class AliVCluster;
3c1d9afb 40class AliVCaloCells;
1c5acb87 41class AliAODPWG4Particle;
c5693f62 42class AliEMCALPIDUtils;
f2ccb5b8 43class AliCalorimeterUtils;
49b5c49b 44class AliVEvent;
1c5acb87 45
46class AliCaloPID : public TObject {
47
477d6cee 48 public:
49
50 AliCaloPID() ; // ctor
bdd2a262 51 AliCaloPID(const Int_t particleFlux) ; // ctor, to be used when recalculating bayesian PID
f21fc003 52 AliCaloPID(const TNamed * emcalpid) ; // ctor, to be used when recalculating bayesian PID and need different parameters
477d6cee 53 virtual ~AliCaloPID() ;//virtual dtor
c5693f62 54
3c1d9afb 55 enum PidType
56 {
a5fb4114 57 kPhoton = 22,
58 kPi0 = 111,
59 kEta = 221,
60 kElectron = 11,
61 kEleCon =-11,
62 kNeutralHadron = 2112,
63 kChargedHadron = 211,
477d6cee 64 kNeutralUnknown = 130,
a5fb4114 65 kChargedUnknown = 321
477d6cee 66 };
67
68 enum TagType {kPi0Decay, kEtaDecay, kOtherDecay, kConversion, kNoTag = -1};
69
49b5c49b 70 // Main methods
71
a5fb4114 72 TList * GetCreateOutputObjects();
d39cba7e 73
a5fb4114 74 void InitParameters();
9a6fa057 75
995c6150 76 Bool_t IsInPi0SplitAsymmetryRange(const Float_t energy, const Float_t asy, const Int_t nlm);
77
78 Bool_t IsInPi0SplitMassRange (const Float_t energy, const Float_t mass, const Int_t nlm);
79
80 Bool_t IsInMergedM02Range (const Float_t energy, const Float_t m02, const Int_t nlm);
5a72d9af 81
5a72d9af 82
3c1d9afb 83 Int_t GetIdentifiedParticleTypeFromBayesWeights(const Bool_t isEMCAL, const Double_t * pid, const Float_t energy) ;
84
85 Int_t GetIdentifiedParticleTypeFromClusterSplitting(AliVCluster * cluster, AliVCaloCells* cells,
86 AliCalorimeterUtils * caloutils,
87 Double_t vertex[3],
bfdcf7fb 88 Int_t & nLocMax, Double_t & mass, Double_t & angle,
89 Double_t & e1 , Double_t & e2 ) ;
477d6cee 90
3c1d9afb 91 Int_t GetIdentifiedParticleType(const AliVCluster * cluster) ;
477d6cee 92
9a6fa057 93 TString GetPIDParametersList();
477d6cee 94
49b5c49b 95 Bool_t IsTrackMatched(AliVCluster * cluster, AliCalorimeterUtils* cu, AliVEvent* event) const ;
96
3c1d9afb 97 void SetPIDBits(AliVCluster * cluster, AliAODPWG4Particle *aodph,
49b5c49b 98 AliCalorimeterUtils* cu, AliVEvent* event);
477d6cee 99
a5fb4114 100 void Print(const Option_t * opt)const;
101
3c1d9afb 102 void PrintClusterPIDWeights(const Double_t * pid) const;
103
49b5c49b 104 //Check if cluster photon-like. Uses photon cluster parameterization in real pp data
105 //Returns distance in sigmas. Recommended cut 2.5
106 Float_t TestPHOSDispersion(const Double_t pt, const Double_t m20, const Double_t m02) const ;
107 //Checks distance to the closest track. Takes into account
108 //non-perpendicular incidence of tracks.
109 Float_t TestPHOSChargedVeto(const Double_t dx, const Double_t dz, const Double_t ptTrack,
110 const Int_t chargeTrack, const Double_t mf) const ;
111
112 // Setters, getters
113
114 void SetDebug(Int_t deb) { fDebug = deb ; }
115 Int_t GetDebug() const { return fDebug ; }
116
117 enum eventType{kLow,kHigh};
118 void SetLowParticleFlux() { fParticleFlux = kLow ; }
119 void SetHighParticleFlux() { fParticleFlux = kHigh ; }
120 // not really used, only for bayesian recalculation in EMCAL, but could be useful in future
121
122 // Bayesian
123
124 void SwitchOnBayesian() { fUseBayesianWeights = kTRUE ; }
125 void SwitchOffBayesian() { fUseBayesianWeights = kFALSE; }
126 void SwitchOnBayesianRecalculation() { fRecalculateBayesian = kTRUE ; fUseBayesianWeights = kTRUE ;} // EMCAL
127 void SwitchOffBayesianRecalculation() { fRecalculateBayesian = kFALSE; } // EMCAL
128
c5693f62 129 AliEMCALPIDUtils * GetEMCALPIDUtils() ;
477d6cee 130
131 //Weight getters
49b5c49b 132 Float_t GetEMCALPhotonWeight() const { return fEMCALPhotonWeight ; }
133 Float_t GetEMCALPi0Weight() const { return fEMCALPi0Weight ; }
134 Float_t GetEMCALElectronWeight() const { return fEMCALElectronWeight ; }
135 Float_t GetEMCALChargeWeight() const { return fEMCALChargeWeight ; }
136 Float_t GetEMCALNeutralWeight() const { return fEMCALNeutralWeight ; }
137 Float_t GetPHOSPhotonWeight() const { return fPHOSPhotonWeight ; }
138 Float_t GetPHOSPi0Weight() const { return fPHOSPi0Weight ; }
139 Float_t GetPHOSElectronWeight() const { return fPHOSElectronWeight ; }
140 Float_t GetPHOSChargeWeight() const { return fPHOSChargeWeight ; }
141 Float_t GetPHOSNeutralWeight() const { return fPHOSNeutralWeight ; }
142
143 Bool_t IsPHOSPIDWeightFormulaOn() const { return fPHOSWeightFormula ; }
144
145 TFormula * GetPHOSPhotonWeightFormula() {
a5fb4114 146 if(!fPHOSPhotonWeightFormula)
147 fPHOSPhotonWeightFormula = new TFormula("phos_photon_weight",
148 fPHOSPhotonWeightFormulaExpression);
49b5c49b 149 return fPHOSPhotonWeightFormula ; }
477d6cee 150
49b5c49b 151 TFormula * GetPHOSPi0WeightFormula() {
a5fb4114 152 if(!fPHOSPi0WeightFormula)
153 fPHOSPi0WeightFormula = new TFormula("phos_pi0_weight",
154 fPHOSPi0WeightFormulaExpression);
49b5c49b 155 return fPHOSPi0WeightFormula ; }
5ae09196 156
49b5c49b 157 TString GetPHOSPhotonWeightFormulaExpression() const { return fPHOSPhotonWeightFormulaExpression ; }
158 TString GetPHOSPi0WeightFormulaExpression() const { return fPHOSPi0WeightFormulaExpression ; }
5ae09196 159
a5fb4114 160 //Weight setters
49b5c49b 161 void SetEMCALPhotonWeight (Float_t w) { fEMCALPhotonWeight = w ; }
162 void SetEMCALPi0Weight (Float_t w) { fEMCALPi0Weight = w ; }
163 void SetEMCALElectronWeight(Float_t w) { fEMCALElectronWeight = w ; }
164 void SetEMCALChargeWeight (Float_t w) { fEMCALChargeWeight = w ; }
165 void SetEMCALNeutralWeight (Float_t w) { fEMCALNeutralWeight = w ; }
166 void SetPHOSPhotonWeight (Float_t w) { fPHOSPhotonWeight = w ; }
167 void SetPHOSPi0Weight (Float_t w) { fPHOSPi0Weight = w ; }
168 void SetPHOSElectronWeight (Float_t w) { fPHOSElectronWeight = w ; }
169 void SetPHOSChargeWeight (Float_t w) { fPHOSChargeWeight = w ; }
170 void SetPHOSNeutralWeight (Float_t w) { fPHOSNeutralWeight = w ; }
171
172 void UsePHOSPIDWeightFormula (Bool_t ok ) { fPHOSWeightFormula = ok ; }
173 void SetPHOSPhotonWeightFormulaExpression(TString ph) { fPHOSPhotonWeightFormulaExpression = ph ; }
174 void SetPHOSPi0WeightFormulaExpression (TString pi) { fPHOSPi0WeightFormulaExpression = pi ; }
d39cba7e 175
49b5c49b 176 //PID cuts
d39cba7e 177
49b5c49b 178 void SetEMCALLambda0CutMax(Float_t lcut ) { fEMCALL0CutMax = lcut ; }
179 Float_t GetEMCALLambda0CutMax() const { return fEMCALL0CutMax ; }
180
181 void SetEMCALLambda0CutMin(Float_t lcut ) { fEMCALL0CutMin = lcut ; }
182 Float_t GetEMCALLambda0CutMin() const { return fEMCALL0CutMin ; }
183
184 void SetEMCALDEtaCut(Float_t dcut ) { fEMCALDEtaCut = dcut ; }
185 Float_t GetEMCALDEtaCut() const { return fEMCALDEtaCut ; }
186
187 void SetEMCALDPhiCut(Float_t dcut ) { fEMCALDPhiCut = dcut ; }
188 Float_t GetEMCALDPhiCut() const { return fEMCALDPhiCut ; }
189
190 void SetTOFCut(Float_t tcut ) { fTOFCut = tcut ; }
191 Float_t GetTOFCut() const { return fTOFCut ; }
192
193 void SetPHOSRCut(Float_t rcut ) { fPHOSRCut = rcut ; }
194 Float_t GetPHOSRCut() const { return fPHOSRCut ; }
a5fb4114 195
49b5c49b 196 void SetPHOSDispersionCut(Float_t dcut ) { fPHOSDispersionCut = dcut ; }
197 Float_t GetPHOSDispersionCut() const { return fPHOSDispersionCut ; }
198
3c1d9afb 199 // Cluster splitting analysis
200
201 void SwitchOnClusterSplittingPID() { fDoClusterSplitting = kTRUE ; }
202 void SwitchOffClusterplittingPID() { fDoClusterSplitting = kFALSE ; }
5a72d9af 203
204 void SwitchOnSimpleSplitMassCut() { fUseSimpleMassCut = kTRUE ; }
205 void SwitchOffSimpleSplitMassCut() { fUseSimpleMassCut = kFALSE ; }
3c1d9afb 206
5a72d9af 207 void SwitchOnSimpleSplitM02Cut() { fUseSimpleM02Cut = kTRUE ; }
208 void SwitchOffSimpleSplitM02Cut() { fUseSimpleM02Cut = kFALSE ; }
209
667432ef 210 void SwitchOnSplitAsymmetryCut() { fUseSplitAsyCut = kTRUE ; }
211 void SwitchOffSplitAsymmetryCut() { fUseSplitAsyCut = kFALSE ; }
212
3c1d9afb 213 void SetClusterSplittingM02Cut(Float_t min=0, Float_t max=100)
214 { fSplitM02MinCut = min ; fSplitM02MaxCut = max ; }
215
667432ef 216 void SetClusterSplittingMinNCells(Int_t cut) { fSplitMinNCells = cut ; }
217
218 void SetSplitEnergyFractionMinimum(Float_t min){ fSplitEFracMin = min ; }
219 Float_t GetSplitEnergyFractionMinimum() const { return fSplitEFracMin ; }
3c1d9afb 220
5a72d9af 221 Float_t GetPi0MinMass() const { return fMassPi0Min ; } // Simple cut case
222 Float_t GetEtaMinMass() const { return fMassEtaMin ; } // Simple cut case
3c1d9afb 223 Float_t GetPhotonMinMass() const { return fMassPhoMin ; }
224 Float_t GetPi0MaxMass() const { return fMassPi0Max ; }
225 Float_t GetEtaMaxMass() const { return fMassEtaMax ; }
226 Float_t GetPhotonMaxMass() const { return fMassPhoMax ; }
227
5a72d9af 228 void SetSplitWidthSigma(Float_t s) { fSplitWidthSigma = s ; }
995c6150 229 void SetPi0MassWidthSelectionParameters (Int_t iparam, Float_t param) { if(iparam < 7 ) fMassWidthPi0Param[iparam] = param ; }
a5a3f703 230 void SetM02MinimumSelectionParameters (Int_t inlm, Int_t iparam, Float_t param)
667432ef 231 { if(iparam < 6 && inlm < 2) fM02MinParam[inlm][iparam] = param ; }
afc83530 232 void SetAsymmetryMinimumSelectionParameters(Int_t inlm, Int_t iparam, Float_t param)
667432ef 233 { if(iparam < 6 && inlm < 2) fAsyMinParam[inlm][iparam] = param ; }
5a72d9af 234
235 void SetPi0MassRange(Float_t min, Float_t max) { fMassPi0Min = min ; fMassPi0Max = max ; } // Simple case
236 void SetEtaMassRange(Float_t min, Float_t max) { fMassEtaMin = min ; fMassEtaMax = max ; }
237 void SetPhotonMassRange(Float_t min, Float_t max) { fMassPhoMin = min ; fMassPhoMax = max ; }
667432ef 238
f2ccb5b8 239private:
477d6cee 240
49b5c49b 241 Int_t fDebug; // Debug level
242 Int_t fParticleFlux; // Particle flux for setting PID parameters
243
244 // Bayesian
245 AliEMCALPIDUtils * fEMCALPIDUtils; // Pointer to EMCALPID to redo the PID Bayesian calculation
246 Bool_t fUseBayesianWeights; // Select clusters based on weights calculated in reconstruction
247 Bool_t fRecalculateBayesian; // Recalculate PID bayesian or use simple PID?
248
249 Float_t fEMCALPhotonWeight; // Bayesian PID weight for photons in EMCAL
250 Float_t fEMCALPi0Weight; // Bayesian PID weight for pi0 in EMCAL
251 Float_t fEMCALElectronWeight; // Bayesian PID weight for electrons in EMCAL
252 Float_t fEMCALChargeWeight; // Bayesian PID weight for charged hadrons in EMCAL
253 Float_t fEMCALNeutralWeight; // Bayesian PID weight for neutral hadrons in EMCAL
254 Float_t fPHOSPhotonWeight; // Bayesian PID weight for photons in PHOS
255 Float_t fPHOSPi0Weight; // Bayesian PID weight for pi0 in PHOS
256 Float_t fPHOSElectronWeight; // Bayesian PID weight for electrons in PHOS
257 Float_t fPHOSChargeWeight; // Bayesian PID weight for charged hadrons in PHOS
258 Float_t fPHOSNeutralWeight; // Bayesian PID weight for neutral hadrons in PHOS
a5fb4114 259
9a6fa057 260 Bool_t fPHOSWeightFormula ; // Use parametrized weight threshold, function of energy
261 TFormula *fPHOSPhotonWeightFormula ; // Formula for photon weight
262 TFormula *fPHOSPi0WeightFormula ; // Formula for pi0 weight
a5fb4114 263 TString fPHOSPhotonWeightFormulaExpression; // Photon weight formula in string
264 TString fPHOSPi0WeightFormulaExpression; // Pi0 weight formula in string
265
49b5c49b 266 // PID calculation
267 Float_t fEMCALL0CutMax; // Max Cut on shower shape lambda0, used in PID evaluation, only EMCAL
268 Float_t fEMCALL0CutMin; // Min Cut on shower shape lambda0, used in PID evaluation, only EMCAL
269 Float_t fEMCALDEtaCut; // Track matching cut on Dz
270 Float_t fEMCALDPhiCut; // Track matching cut on Dx
ae182e60 271
49b5c49b 272 Float_t fTOFCut; // Cut on TOF, used in PID evaluation
273
274 Float_t fPHOSDispersionCut; // Shower shape elipse radious cut
275 Float_t fPHOSRCut; // Track-Cluster distance cut for track matching in PHOS
49b5c49b 276
3c1d9afb 277 // Cluster splitting mass ranges
278 Bool_t fDoClusterSplitting; // Cluster splitting analysis
5a72d9af 279 Bool_t fUseSimpleMassCut; // Use simple min-max pi0 mass cut
280 Bool_t fUseSimpleM02Cut; // Use simple min-max M02 cut
667432ef 281 Bool_t fUseSplitAsyCut ; // Remove splitted clusters with too large asymmetry, range defined in AliCaloPID
282 Float_t fSplitM02MaxCut ; // Study clusters with l0 smaller than cut
5a72d9af 283 Float_t fSplitM02MinCut ; // Study clusters with l0 larger than cut // simple case
3c1d9afb 284 Int_t fSplitMinNCells ; // Study clusters with ncells larger than cut
285 Float_t fMassEtaMin ; // Min Eta mass
286 Float_t fMassEtaMax ; // Max Eta mass
5a72d9af 287 Float_t fMassPi0Min ; // Min Pi0 mass // simple cut case
288 Float_t fMassPi0Max ; // Min Pi0 mass // simple cut case
3c1d9afb 289 Float_t fMassPhoMin ; // Min Photon mass
290 Float_t fMassPhoMax ; // Min Photon mass
5a72d9af 291 Float_t fMassWidthPi0Param[7] ; // 3 param for pol2 fit on width, 2 param for mass position NLM=1 and NLM>1 for pi0 selection
667432ef 292 Float_t fM02MinParam[2][6] ; // 4 param for pol3 fit on M02 minimum
293 Float_t fAsyMinParam[2][6] ; // 4 param for pol3 fit on asymmetry minimum, for 2 cases, NLM=1 and NLM>=2
5a72d9af 294 Float_t fSplitEFracMin ; // Do not use clusters with too large energy in cluster compared
295 // to energy in splitted clusters
296 Float_t fSplitWidthSigma; // Cut on mass+-width*fSplitWidthSigma
297
298
3c1d9afb 299
5a72d9af 300 AliCaloPID & operator = (const AliCaloPID & cpid) ; // cpy assignment
301 AliCaloPID( const AliCaloPID & cpid) ; // cpy ctor
c5693f62 302
afc83530 303 ClassDef(AliCaloPID,16)
3c1d9afb 304
e5dbdaf0 305} ;
1c5acb87 306
307
308#endif //ALICALOPID_H
309
310
311