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10d100d4 | 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 */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | //------------------------------------------------------- | |
9 | // ITS PID response class | |
10 | // | |
11 | // | |
12 | //------------------------------------------------------- | |
13 | //#include <Rtypes.h> | |
14 | #include <TObject.h> | |
10d100d4 | 15 | #include "AliPID.h" |
16 | ||
17 | class AliITSPIDResponse : public TObject { | |
18 | ||
19 | public: | |
15e979c9 | 20 | AliITSPIDResponse(Bool_t isMC=kFALSE); |
56576f1e | 21 | //AliITSPIDResponse(Double_t *param); |
10d100d4 | 22 | ~AliITSPIDResponse() {} |
99daa709 | 23 | |
24 | void SetBetheBlochParamsITSTPC(Double_t* param){ | |
25 | for(Int_t iPar=0; iPar<5; iPar++) fBBtpcits[iPar]=param[iPar]; | |
26 | } | |
27 | void SetBetheBlochParamsITSsa(Double_t* param){ | |
28 | for(Int_t iPar=0; iPar<5; iPar++) fBBsa[iPar]=param[iPar]; | |
29 | } | |
62ccfebf | 30 | |
31 | void SetBetheBlochHybridParamsITSsa(Double_t* param){ | |
32 | for(Int_t iPar=0; iPar<9; iPar++) fBBsaHybrid[iPar]=param[iPar]; | |
33 | } | |
88f46717 | 34 | void SetElectronBetheBlochParamsITSsa(Double_t* param){ |
35 | for(Int_t iPar=0; iPar<5; iPar++) fBBsaElectron[iPar]=param[iPar]; | |
36 | } | |
99daa709 | 37 | |
15e979c9 | 38 | Double_t BetheAleph(Double_t p,Double_t mass) const; |
39 | Double_t Bethe(Double_t p, Double_t mass, Bool_t iSA=kFALSE) const; | |
62ccfebf | 40 | Double_t BetheITSsaHybrid(Double_t p, Double_t mass) const; |
15e979c9 | 41 | Double_t GetResolution(Double_t bethe, Int_t nPtsForPid=4, Bool_t isSA=kFALSE) const; |
b52bfc67 | 42 | void GetITSProbabilities(Float_t mom, Double_t qclu[4], Double_t condprobfun[AliPID::kSPECIES],Bool_t isMC=kFALSE) const; |
15e979c9 | 43 | Float_t GetNumberOfSigmas(Float_t mom, Float_t signal, AliPID::EParticleType type, Int_t nPtsForPid=4, Bool_t isSA=kFALSE) const { |
00a38d07 | 44 | const Double_t chargeFactor = TMath::Power(AliPID::ParticleCharge(type),2.); |
45 | Float_t bethe = Bethe(mom,AliPID::ParticleMassZ(type),isSA)*chargeFactor; | |
15e979c9 | 46 | return (signal - bethe)/GetResolution(bethe,nPtsForPid,isSA); |
47 | } | |
8abeb05b | 48 | Int_t GetParticleIdFromdEdxVsP(Float_t mom, Float_t signal, Bool_t isSA=kFALSE) const; |
10d100d4 | 49 | |
50 | private: | |
51 | ||
15e979c9 | 52 | |
10d100d4 | 53 | // Data members for truncated mean method |
15e979c9 | 54 | Float_t fRes; // relative dEdx resolution |
10d100d4 | 55 | Double_t fKp1; // ALEPH BB param 1 |
56 | Double_t fKp2; // ALEPH BB param 2 | |
57 | Double_t fKp3; // ALEPH BB param 3 | |
58 | Double_t fKp4; // ALEPH BB param 4 | |
15e979c9 | 59 | Double_t fKp5; // ALEPH BB param |
62ccfebf | 60 | Double_t fBBsa[5]; // parameters of BB for SA tracks |
61 | Double_t fBBsaHybrid[9]; // parameters of Hybrid BB for SA tracks, PHOB + Polinomial al low beta*gamma | |
62 | Double_t fBBsaElectron[5];// parameters of electron BB for SA tracks | |
15e979c9 | 63 | Double_t fBBtpcits[5]; // parameters of BB for TPC+ITS tracks |
64 | Float_t fResolSA[5]; // resolutions vs. n. of SDD/SSD points | |
65 | Float_t fResolTPCITS[5]; // resolutions vs. n. of SDD/SSD points | |
10d100d4 | 66 | |
62ccfebf | 67 | ClassDef(AliITSPIDResponse,4) // ITS PID class |
10d100d4 | 68 | }; |
69 | ||
70 | #endif | |
71 | ||
72 |