Last minute changes; ExB correction in AliTRDclusterizerV1; taking into account of...
[u/mrichter/AliRoot.git] / TRD / AliTRDtrack.h
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46d29e70 1#ifndef ALITRDTRACK_H
2#define ALITRDTRACK_H
3
4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
6
7#include <TObject.h>
8
9class AliTRDcluster;
10
11class AliTRDtrack : public TObject {
12
13// Represents reconstructed TRD track
14
46d29e70 15public:
16
17 AliTRDtrack() { fN=0;}
a819a5f7 18 AliTRDtrack(const AliTRDcluster *c, UInt_t index, const Double_t xx[5],
46d29e70 19 const Double_t cc[15], Double_t xr, Double_t alpha);
20 AliTRDtrack(const AliTRDtrack& t);
21
a819a5f7 22 Int_t Compare(const TObject *o) const;
23 void CookdEdx(Double_t low=0.05, Double_t up=0.70);
46d29e70 24
25 Double_t GetAlpha() const {return fAlpha;}
26 Double_t GetC() const {return fC;}
27 Int_t GetClusterIndex(Int_t i) const {return fIndex[i];}
a819a5f7 28 Float_t GetClusterdQdl(Int_t i) const {return fdQdl[i];}
46d29e70 29 Double_t GetChi2() const {return fChi2;}
a819a5f7 30 Double_t GetZchi2() const {return fZchi2;}
46d29e70 31 void GetCovariance(Double_t cov[15]) const;
a819a5f7 32 Double_t GetdEdx() const {return fdEdx;}
46d29e70 33 Double_t GetEta() const {return fE;}
34 Int_t GetLabel() const {return fLab;}
35 Int_t GetNclusters() const {return fN;}
36 Double_t GetP() const {
37 return TMath::Abs(GetPt())*sqrt(1.+GetTgl()*GetTgl());
38 }
39 Double_t GetPredictedChi2(const AliTRDcluster*) const ;
a819a5f7 40 Double_t GetPt() const {return 0.299792458*0.4/GetC()/100;}
46d29e70 41 void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const ;
42 Double_t GetSigmaC2() const {return fCcc;}
43 Double_t GetSigmaTgl2() const {return fCtt;}
44 Double_t GetSigmaY2() const {return fCyy;}
45 Double_t GetSigmaZ2() const {return fCzz;}
46 Double_t GetTgl() const {return fT;}
47 Double_t GetX() const {return fX;}
48 Double_t GetY() const {return fY;} // returns running Y
49 Double_t GetZ() const {return fZ;}
a819a5f7 50
a2b90f83 51 Float_t GetLikelihoodElectron() const { return fLhElectron; };
a819a5f7 52
46d29e70 53 Bool_t IsSortable() const {return kTRUE;}
54
55 Int_t PropagateTo(Double_t xr,
56 Double_t x0=8.72,Double_t rho=5.86e-3,Double_t pm=0.139);
46d29e70 57 Int_t Rotate(Double_t angle);
58
59 void SetLabel(Int_t lab=0) {fLab=lab;}
60 void SetdEdx(Float_t dedx) {fdEdx=dedx;}
61
62 void Update(const AliTRDcluster* c, Double_t chi2, UInt_t i);
63
a819a5f7 64 void SetLikelihoodElectron(Float_t l) { fLhElectron = l; };
bbf92647 65
66protected:
67
68 Int_t fLab; // track label
a819a5f7 69 Double_t fChi2; // total chi2 value for R*phi measurements
70 Double_t fZchi2; // total chi2 value for Z measurements
bbf92647 71 Float_t fdEdx; // dE/dx
72
73 Double_t fAlpha; // rotation angle
74 Double_t fX; // running local X-coordinate of the track (time bin)
75
76 Double_t fY; // Y-coordinate of the track
77 Double_t fZ; // Z-coordinate of the track
78 Double_t fC; // track curvature
79 Double_t fE; // C*x0
80 Double_t fT; // tangent of the track dip angle
81
82 Double_t fCyy; // covariance
83 Double_t fCzy, fCzz; // matrix
84 Double_t fCcy, fCcz, fCcc; // of the
85 Double_t fCey, fCez, fCec, fCee; // track
86 Double_t fCty, fCtz, fCtc, fCte, fCtt; // parameters
87
88 Short_t fN; // number of clusters associated with the track
89 UInt_t fIndex[200]; // global indexes of these clusters
a819a5f7 90 Float_t fdQdl[200]; // cluster amplitudes corrected for track angles
91
92 Float_t fLhElectron; // Likelihood to be an electron
bbf92647 93
a819a5f7 94 ClassDef(AliTRDtrack,2) // TRD reconstructed tracks
a2b90f83 95
46d29e70 96};
97
98
46d29e70 99#endif