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8c6a71ab | 1 | #ifndef ALIESDPID_H |
2 | #define ALIESDPID_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
4f679a16 | 6 | /* $Id$ */ |
7 | ||
8c6a71ab | 8 | //------------------------------------------------------- |
9 | // Combined PID class | |
4f679a16 | 10 | // for the Event Summary Data class |
8c6a71ab | 11 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch |
12 | //------------------------------------------------------- | |
13 | #include <Rtypes.h> | |
10d100d4 | 14 | #include "AliESDtrack.h" // Needed for inline functions |
15 | #include "AliTPCPIDResponse.h" | |
16 | #include "AliITSPIDResponse.h" | |
17 | #include "AliTOFPIDResponse.h" | |
b439f460 | 18 | #include "AliTRDPIDResponse.h" |
10d100d4 | 19 | //#include "HMPID/AliHMPID.h" |
20 | //#include "TRD/AliTRDpidESD.h" | |
8c6a71ab | 21 | |
af885e0f | 22 | class AliESDEvent; |
8c6a71ab | 23 | |
24 | class AliESDpid { | |
25 | public: | |
b439f460 | 26 | AliESDpid(): fRange(5.), fITSPIDmethod(kITSTruncMean), fTPCResponse(), fITSResponse(), fTOFResponse(), fTRDResponse(){;} |
44ce6bbe | 27 | virtual ~AliESDpid() {} |
10d100d4 | 28 | Int_t MakePID(AliESDEvent *event, Bool_t TPCOnly = kFALSE, Float_t TimeZeroTOF=0) const; |
29 | void MakeTPCPID(AliESDtrack *track) const; | |
30 | void MakeITSPID(AliESDtrack *track) const; | |
31 | void MakeTOFPID(AliESDtrack *track, Float_t TimeZeroTOF) const; | |
32 | // void MakeHMPIDPID(AliESDtrack *track); | |
b439f460 | 33 | void MakeTRDPID(AliESDtrack *track) const; |
10d100d4 | 34 | void CombinePID(AliESDtrack *track) const; |
7ef60110 | 35 | |
36 | enum ITSPIDmethod { kITSTruncMean, kITSLikelihood }; | |
37 | void SetITSPIDmethod(ITSPIDmethod pmeth) { fITSPIDmethod = pmeth; } | |
38 | ||
10d100d4 | 39 | Float_t NumberOfSigmasTPC(const AliESDtrack *track, AliPID::EParticleType type) const; |
40 | Float_t NumberOfSigmasTOF(const AliESDtrack *track, AliPID::EParticleType type, const Float_t TimeZeroTOF) const; | |
41 | Float_t NumberOfSigmasITS(const AliESDtrack *track, AliPID::EParticleType type) const; | |
42 | ||
43 | AliITSPIDResponse &GetITSResponse() {return fITSResponse;} | |
44 | AliTPCPIDResponse &GetTPCResponse() {return fTPCResponse;} | |
45 | AliTOFPIDResponse &GetTOFResponse() {return fTOFResponse;} | |
b439f460 | 46 | AliTRDPIDResponse &GetTRDResponse() {return fTRDResponse;} |
10d100d4 | 47 | |
10d100d4 | 48 | |
8c6a71ab | 49 | private: |
10d100d4 | 50 | Float_t fRange; // nSigma max in likelihood |
51 | ITSPIDmethod fITSPIDmethod; // 0 = trunc mean; 1 = likelihood | |
52 | AliTPCPIDResponse fTPCResponse; | |
53 | AliITSPIDResponse fITSResponse; | |
54 | AliTOFPIDResponse fTOFResponse; | |
55 | // AliHMPIDPIDResponse fHMPIDResponse; | |
b439f460 | 56 | AliTRDPIDResponse fTRDResponse; |
10d100d4 | 57 | |
b439f460 | 58 | ClassDef(AliESDpid,4) // PID calculation class |
8c6a71ab | 59 | }; |
60 | ||
10d100d4 | 61 | inline Float_t AliESDpid::NumberOfSigmasTPC(const AliESDtrack *track, AliPID::EParticleType type) const { |
62 | Double_t mom = track->GetP(); | |
ff945ab9 | 63 | const AliExternalTrackParam *in = track->GetInnerParam(); |
10d100d4 | 64 | if (in) |
65 | mom = in->GetP(); | |
66 | return fTPCResponse.GetNumberOfSigmas(mom,track->GetTPCsignal(),track->GetTPCsignalN(),type); | |
67 | } | |
68 | ||
69 | inline Float_t AliESDpid::NumberOfSigmasTOF(const AliESDtrack *track, AliPID::EParticleType type, const Float_t TimeZeroTOF) const { | |
70 | Double_t times[AliPID::kSPECIES]; | |
71 | track->GetIntegratedTimes(times); | |
72 | return (track->GetTOFsignal() - TimeZeroTOF - times[type])/fTOFResponse.GetExpectedSigma(track->GetP(),times[type],AliPID::ParticleMass(type)); | |
73 | } | |
74 | ||
75 | inline Float_t AliESDpid::NumberOfSigmasITS(const AliESDtrack *track, AliPID::EParticleType type) const { | |
15e979c9 | 76 | ULong_t trStatus=track->GetStatus(); |
77 | Float_t dEdx=track->GetITSsignal(); | |
78 | UChar_t clumap=track->GetITSClusterMap(); | |
79 | Int_t nPointsForPid=0; | |
80 | for(Int_t i=2; i<6; i++){ | |
81 | if(clumap&(1<<i)) ++nPointsForPid; | |
82 | } | |
83 | if(trStatus&AliESDtrack::kTPCin){ | |
84 | const AliExternalTrackParam *in = track->GetInnerParam(); | |
85 | Float_t mom=in->P(); | |
86 | return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,kFALSE); | |
87 | }else{ | |
88 | Float_t mom=track->P(); | |
89 | return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,kTRUE); | |
90 | } | |
10d100d4 | 91 | } |
8c6a71ab | 92 | #endif |
93 | ||
94 |