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e23730c7 | 1 | #ifndef ALIESDV0_H |
2 | #define ALIESDV0_H | |
3 | ||
4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
5 | * See cxx source for full Copyright notice */ | |
6 | ||
7 | //------------------------------------------------------------------------- | |
8 | // ESD V0 Vertex Class | |
9 | // | |
10 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch | |
11 | //------------------------------------------------------------------------- | |
12 | ||
13 | #include <TObject.h> | |
14 | #include <TPDGCode.h> | |
15 | ||
16 | class AliESDtrack; | |
17 | ||
18 | class AliESDv0 : public TObject { | |
19 | public: | |
20 | AliESDv0(); | |
21 | ||
22 | Double_t ChangeMassHypothesis(Int_t code=kK0Short); | |
23 | ||
24 | Int_t GetPdgCode() const {return fPdgCode;} | |
25 | Double_t GetEffMass() const {return fEffMass;} | |
26 | Double_t GetChi2() const {return fChi2;} | |
27 | void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
28 | void GetNPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
29 | void GetPPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
30 | void GetXYZ(Double_t &x, Double_t &y, Double_t &z) const; | |
31 | Double_t GetD(Double_t x0=0.,Double_t y0=0.,Double_t z0=0.) const; | |
32 | Int_t GetNindex() const {return fNidx;} | |
33 | Int_t GetPindex() const {return fPidx;} | |
34 | ||
35 | protected: | |
36 | Int_t fPdgCode; // reconstructed V0's type (PDG code) | |
37 | Double_t fEffMass; // reconstructed V0's effective mass | |
38 | Double_t fChi2; // V0's chi2 value | |
39 | Double_t fPos[3]; // V0's position (global) | |
40 | Double_t fPosCov[6]; // covariance matrix of the vertex position | |
41 | ||
42 | Int_t fNidx; // index of the negative daughter | |
43 | Double_t fNmom[3]; // momentum of the negative daughter (global) | |
44 | Double_t fNmomCov[6]; // covariance matrix of the negative daughter mom. | |
45 | ||
46 | Int_t fPidx; // index of the positive daughter | |
47 | Double_t fPmom[3]; // momentum of the positive daughter (global) | |
48 | Double_t fPmomCov[6]; // covariance matrix of the positive daughter mom. | |
49 | ||
50 | ClassDef(AliESDv0,1) // ESD V0 vertex | |
51 | }; | |
52 | ||
53 | inline | |
54 | void AliESDv0::GetNPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const { | |
55 | px=fNmom[0]; py=fNmom[1]; pz=fNmom[2]; | |
56 | } | |
57 | ||
58 | inline | |
59 | void AliESDv0::GetPPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const { | |
60 | px=fPmom[0]; py=fPmom[1]; pz=fPmom[2]; | |
61 | } | |
62 | ||
63 | #endif | |
64 | ||
65 |