1 #ifndef ALIITSPIDRESPONSE_H
2 #define ALIITSPIDRESPONSE_H
3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //-------------------------------------------------------
9 // ITS PID response class
12 //-------------------------------------------------------
18 class AliITSPIDResponse : public TObject {
22 AliITSPIDResponse(Double_t *param);
23 ~AliITSPIDResponse() {}
24 Double_t Bethe(Double_t p,Double_t mass) const;
25 Double_t GetResolution(Double_t bethe) const;
26 void GetITSProbabilities(Float_t mom, Double_t qclu[4], Double_t condprobfun[AliPID::kSPECIES]) const;
27 Float_t GetNumberOfSigmas(Float_t mom, Float_t signal, AliPID::EParticleType type) const {
28 Float_t bethe = Bethe(mom,AliPID::ParticleMass(type));
29 return (signal - bethe)/GetResolution(bethe);
34 // Data members for truncated mean method
35 Float_t fRes; // relative dEdx resolution
36 Double_t fKp1; // ALEPH BB param 1
37 Double_t fKp2; // ALEPH BB param 2
38 Double_t fKp3; // ALEPH BB param 3
39 Double_t fKp4; // ALEPH BB param 4
40 Double_t fKp5; // ALEPH BB param 5
42 ClassDef(AliITSPIDResponse,1) // ITS PID class