Changes requested in report #61429: PID: Separating response functions from ESD ...

[u/mrichter/AliRoot.git] / STEER / AliESDpid.h

diff --git a/STEER/AliESDpid.h b/STEER/AliESDpid.h
index 375bb24051bcb6ffcfef2ae226ca238d99b6b195..562a63c0f1e4a05ea930aeff43183065e9ad48cc 100644 (file)
--- a/STEER/AliESDpid.h
+++ b/STEER/AliESDpid.h
@@ -11,18 +11,65 @@
 //   Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch 
 //-------------------------------------------------------
 #include <Rtypes.h>
+#include "AliESDtrack.h" // Needed for inline functions
+#include "AliTPCPIDResponse.h"
+#include "AliITSPIDResponse.h"
+#include "AliTOFPIDResponse.h"
+//#include "HMPID/AliHMPID.h"
+//#include "TRD/AliTRDpidESD.h"
 
 class AliESDEvent;
 
 class AliESDpid {
 public:
-  AliESDpid(){}
+  AliESDpid(): fRange(5.), fITSPIDmethod(kITSTruncMean), fTPCResponse(), fITSResponse(), fTOFResponse() {;}
   virtual ~AliESDpid() {}
-  static Int_t MakePID(AliESDEvent *event);
+  Int_t MakePID(AliESDEvent *event, Bool_t TPCOnly = kFALSE, Float_t TimeZeroTOF=0) const;
+  void MakeTPCPID(AliESDtrack *track) const;
+  void MakeITSPID(AliESDtrack *track) const;
+  void MakeTOFPID(AliESDtrack *track, Float_t TimeZeroTOF) const;
+  //  void MakeHMPIDPID(AliESDtrack *track);
+  //  void MakeTRDPID(AliESDtrack *track);
+  void CombinePID(AliESDtrack *track) const;
+  Float_t NumberOfSigmasTPC(const AliESDtrack *track, AliPID::EParticleType type) const;
+  Float_t NumberOfSigmasTOF(const AliESDtrack *track, AliPID::EParticleType type, const Float_t TimeZeroTOF) const;
+  Float_t NumberOfSigmasITS(const AliESDtrack *track, AliPID::EParticleType type) const;
+
+  AliITSPIDResponse &GetITSResponse() {return fITSResponse;}
+  AliTPCPIDResponse &GetTPCResponse() {return fTPCResponse;}
+  AliTOFPIDResponse &GetTOFResponse() {return fTOFResponse;}
+
+  enum ITSPIDmethod { kITSTruncMean, kITSLikelihood };
+
 private:
-  ClassDef(AliESDpid,2)   // TPC PID class
+  Float_t           fRange;          // nSigma max in likelihood
+  ITSPIDmethod      fITSPIDmethod;   // 0 = trunc mean; 1 = likelihood 
+  AliTPCPIDResponse fTPCResponse;
+  AliITSPIDResponse fITSResponse;
+  AliTOFPIDResponse fTOFResponse;
+  // AliHMPIDPIDResponse fHMPIDResponse;
+  // AliTRDPIDResponse fTRDResponse;
+
+  ClassDef(AliESDpid,3)  // PID calculation class
 };
 
+inline Float_t AliESDpid::NumberOfSigmasTPC(const AliESDtrack *track, AliPID::EParticleType type) const {
+  Double_t mom = track->GetP();
+  const AliExternalTrackParam *in = track->GetTPCInnerParam();
+  if (in)
+    mom = in->GetP();
+  return fTPCResponse.GetNumberOfSigmas(mom,track->GetTPCsignal(),track->GetTPCsignalN(),type); 
+}
+
+inline Float_t AliESDpid::NumberOfSigmasTOF(const AliESDtrack *track, AliPID::EParticleType type, const Float_t TimeZeroTOF) const {
+  Double_t times[AliPID::kSPECIES];
+  track->GetIntegratedTimes(times);
+  return (track->GetTOFsignal() - TimeZeroTOF - times[type])/fTOFResponse.GetExpectedSigma(track->GetP(),times[type],AliPID::ParticleMass(type));
+}
+
+inline Float_t AliESDpid::NumberOfSigmasITS(const AliESDtrack *track, AliPID::EParticleType type) const {
+  return fITSResponse.GetNumberOfSigmas(track->GetP(),track->GetITSsignal(),type); 
+}
 #endif