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8df8e382 | 1 | #ifndef ALIDIELECTRONPID_H |
2 | #define ALIDIELECTRONPID_H | |
3 | ||
4 | /* Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. * | |
5 | * See cxx source for full Copyright notice */ | |
6 | ||
7 | //############################################################# | |
8 | //# # | |
9 | //# Class AliDielectronPID # | |
10 | //# # | |
11 | //# Authors: # | |
12 | //# Anton Andronic, GSI / A.Andronic@gsi.de # | |
13 | //# Ionut C. Arsene, GSI / I.C.Arsene@gsi.de # | |
14 | //# Julian Book, Uni Ffm / Julian.Book@cern.ch # | |
15 | //# Frederick Kramer, Uni Ffm, / Frederick.Kramer@cern.ch # | |
16 | //# Magnus Mager, CERN / Magnus.Mager@cern.ch # | |
17 | //# WooJin J. Park, GSI / W.J.Park@gsi.de # | |
18 | //# Jens Wiechula, Uni HD / Jens.Wiechula@cern.ch # | |
19 | //# # | |
20 | //############################################################# | |
21 | ||
22 | #include <AliPID.h> | |
23 | #include <AliESDpid.h> | |
24 | #include <AliAODTrack.h> | |
25 | #include <AliAODPid.h> | |
26 | ||
27 | #include <AliAnalysisCuts.h> | |
28 | ||
29 | class TF1; | |
8df8e382 | 30 | class TList; |
164bfb53 | 31 | class AliVTrack; |
48609e3d | 32 | class TGraph; |
8df8e382 | 33 | |
34 | class AliDielectronPID : public AliAnalysisCuts { | |
35 | public: | |
36 | enum DetType {kITS, kTPC, kTRD, kTOF}; | |
61d106d3 | 37 | enum PIDbitTupe {kIgnore=0, kRequire, kIfAvailable}; |
8df8e382 | 38 | |
39 | AliDielectronPID(); | |
40 | AliDielectronPID(const char*name, const char* title); | |
41 | ||
42 | virtual ~AliDielectronPID(); | |
43 | ||
44 | void AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, Double_t nSigmaUp=-99999., | |
61d106d3 | 45 | Double_t pMin=0, Double_t pMax=0, Bool_t exclude=kFALSE, UInt_t pidBitType=AliDielectronPID::kRequire); |
8df8e382 | 46 | |
47 | void AddCut(DetType det, AliPID::EParticleType type, Double_t nSigmaLow, TF1 * const funUp, | |
61d106d3 | 48 | Double_t pMin=0, Double_t pMax=0, Bool_t exclude=kFALSE, UInt_t pidBitType=AliDielectronPID::kRequire); |
8df8e382 | 49 | |
50 | void AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, Double_t nSigmaUp, | |
61d106d3 | 51 | Double_t pMin=0, Double_t pMax=0, Bool_t exclude=kFALSE, UInt_t pidBitType=AliDielectronPID::kRequire); |
8df8e382 | 52 | |
53 | void AddCut(DetType det, AliPID::EParticleType type, TF1 * const funLow, TF1 * const funUp, | |
61d106d3 | 54 | Double_t pMin=0, Double_t pMax=0, Bool_t exclude=kFALSE, UInt_t pidBitType=AliDielectronPID::kRequire); |
8df8e382 | 55 | |
56 | void SetDefaults(Int_t def); | |
57 | ||
8df8e382 | 58 | // |
59 | //Analysis cuts interface | |
60 | //const | |
61 | virtual Bool_t IsSelected(TObject* track); | |
62 | virtual Bool_t IsSelected(TList* /* list */ ) {return kFALSE;} | |
48609e3d | 63 | |
64 | static void SetCorrGraph(TGraph * const gr) { fgFitCorr=gr; } | |
65 | static void SetCorrVal(Double_t run); | |
66 | static Double_t GetCorrVal() { return fgCorr; } | |
67 | static TGraph *GetCorrGraph() { return fgFitCorr; } | |
8df8e382 | 68 | |
69 | private: | |
70 | enum {kNmaxPID=10}; | |
71 | ||
72 | DetType fDetType[kNmaxPID]; //detector type of nsigma cut | |
73 | AliPID::EParticleType fPartType[kNmaxPID]; //particle type | |
74 | Float_t fNsigmaLow[kNmaxPID]; //lower nsigma bound | |
75 | Float_t fNsigmaUp[kNmaxPID]; //upper nsigma bound | |
76 | Double_t fPmin[kNmaxPID]; //lower momentum | |
77 | Double_t fPmax[kNmaxPID]; //upper momentum | |
78 | Bool_t fExclude[kNmaxPID]; //use as exclusion band | |
79 | TF1 *fFunUpperCut[kNmaxPID];//use function as upper cut | |
80 | TF1 *fFunLowerCut[kNmaxPID];//use function as lower cut | |
81 | UChar_t fNcuts; //number of cuts | |
61d106d3 | 82 | UChar_t fRequirePIDbit[kNmaxPID]; //How to make use of the pid bit (see) |
8df8e382 | 83 | |
84 | AliESDpid *fESDpid; //! esd pid object | |
85 | ||
48609e3d | 86 | |
87 | static TGraph *fgFitCorr; //spline fit object to correct the nsigma deviation in the TPC electron band | |
88 | static Double_t fgCorr; //!correction value for current run. Set if fgFitCorr is set and SetCorrVal(run) | |
89 | // was called | |
8df8e382 | 90 | |
164bfb53 | 91 | Bool_t IsSelectedITS(AliVTrack * const part, Int_t icut) const; |
92 | Bool_t IsSelectedTPC(AliVTrack * const part, Int_t icut) const; | |
93 | Bool_t IsSelectedTRD(AliVTrack * const part, Int_t icut) const; | |
94 | Bool_t IsSelectedTOF(AliVTrack * const part, Int_t icut) const; | |
8df8e382 | 95 | |
96 | Float_t NumberOfSigmasITS(const AliAODTrack *track, AliPID::EParticleType type) const; | |
97 | Float_t NumberOfSigmasTPC(const AliAODTrack *track, AliPID::EParticleType type) const; | |
98 | Float_t NumberOfSigmasTOF(const AliAODTrack *track, AliPID::EParticleType type) const; | |
99 | ||
100 | AliDielectronPID(const AliDielectronPID &c); | |
101 | AliDielectronPID &operator=(const AliDielectronPID &c); | |
102 | ||
48609e3d | 103 | ClassDef(AliDielectronPID,3) // Dielectron PID |
8df8e382 | 104 | }; |
105 | ||
106 | ||
107 | // | |
108 | // Inline functions for AOD as long as ther is no AOD pid object we have to fake it | |
109 | // | |
110 | ||
111 | inline Float_t AliDielectronPID::NumberOfSigmasITS(const AliAODTrack *track, AliPID::EParticleType type) const { | |
112 | AliAODPid *pid=track->GetDetPid(); | |
113 | if (!pid) return -1000.; | |
114 | ||
115 | return fESDpid->GetITSResponse().GetNumberOfSigmas(track->P(),pid->GetITSsignal(),type); | |
116 | } | |
117 | ||
118 | inline Float_t AliDielectronPID::NumberOfSigmasTPC(const AliAODTrack *track, AliPID::EParticleType type) const { | |
119 | AliAODPid *pid=track->GetDetPid(); | |
120 | if (!pid) return -1000.; | |
121 | ||
122 | Double_t mom = pid->GetTPCmomentum(); | |
123 | if (mom<0) mom=track->P(); | |
124 | ||
125 | //FIXME: rough estimate of the number of clusters used for PID. Needs to be fixed!!! | |
126 | Int_t ncl=(Int_t)track->GetTPCClusterMap().CountBits(); | |
127 | return fESDpid->GetTPCResponse().GetNumberOfSigmas(mom,pid->GetTPCsignal(),ncl,type); | |
128 | } | |
129 | ||
130 | inline Float_t AliDielectronPID::NumberOfSigmasTOF(const AliAODTrack *track, AliPID::EParticleType type) const { | |
131 | AliAODPid *pid=track->GetDetPid(); | |
132 | if (!pid) return -1000.; | |
133 | ||
134 | Double_t times[AliPID::kSPECIES]; | |
135 | pid->GetIntegratedTimes(times); | |
136 | Double_t tofRes = fESDpid->GetTOFResponse().GetExpectedSigma(track->P(),times[type],AliPID::ParticleMass(type)); | |
137 | return (pid->GetTOFsignal() - times[type])/ tofRes; | |
138 | } | |
139 | ||
140 | ||
141 | ||
142 | #endif |