3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //-------------------------------------------------------
10 // for the Event Summary Data class
11 // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
12 //-------------------------------------------------------
14 #include "AliESDtrack.h" // Needed for inline functions
15 #include "AliTPCPIDResponse.h"
16 #include "AliITSPIDResponse.h"
17 #include "AliTOFPIDResponse.h"
18 #include "AliTRDPIDResponse.h"
19 //#include "HMPID/AliHMPID.h"
20 //#include "TRD/AliTRDpidESD.h"
26 AliESDpid(): fRange(5.), fITSPIDmethod(kITSTruncMean), fTPCResponse(), fITSResponse(), fTOFResponse(), fTRDResponse(){;}
27 virtual ~AliESDpid() {}
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);
33 void MakeTRDPID(AliESDtrack *track) const;
34 void CombinePID(AliESDtrack *track) const;
36 enum ITSPIDmethod { kITSTruncMean, kITSLikelihood };
37 void SetITSPIDmethod(ITSPIDmethod pmeth) { fITSPIDmethod = pmeth; }
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;
43 AliITSPIDResponse &GetITSResponse() {return fITSResponse;}
44 AliTPCPIDResponse &GetTPCResponse() {return fTPCResponse;}
45 AliTOFPIDResponse &GetTOFResponse() {return fTOFResponse;}
46 AliTRDPIDResponse &GetTRDResponse() {return fTRDResponse;}
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;
56 AliTRDPIDResponse fTRDResponse;
58 ClassDef(AliESDpid,4) // PID calculation class
61 inline Float_t AliESDpid::NumberOfSigmasTPC(const AliESDtrack *track, AliPID::EParticleType type) const {
62 Double_t mom = track->GetP();
63 const AliExternalTrackParam *in = track->GetInnerParam();
66 return fTPCResponse.GetNumberOfSigmas(mom,track->GetTPCsignal(),track->GetTPCsignalN(),type);
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));
75 inline Float_t AliESDpid::NumberOfSigmasITS(const AliESDtrack *track, AliPID::EParticleType type) const {
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;
83 if(trStatus&AliESDtrack::kTPCin){
84 const AliExternalTrackParam *in = track->GetInnerParam();
86 return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,kFALSE);
88 Float_t mom=track->P();
89 return fITSResponse.GetNumberOfSigmas(mom,dEdx,type,nPointsForPid,kTRUE);