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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 | ||
4f679a16 | 7 | /* $Id$ */ |
8 | ||
e23730c7 | 9 | //------------------------------------------------------------------------- |
10 | // ESD V0 Vertex Class | |
4f679a16 | 11 | // This class is part of the Event Summary Data set of classes |
e23730c7 | 12 | // Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch |
13 | //------------------------------------------------------------------------- | |
14 | ||
15 | #include <TObject.h> | |
16 | #include <TPDGCode.h> | |
17 | ||
c7bafca9 | 18 | class AliExternalTrackParam; |
e23730c7 | 19 | |
20 | class AliESDv0 : public TObject { | |
21 | public: | |
22 | AliESDv0(); | |
c7bafca9 | 23 | AliESDv0(const AliExternalTrackParam &t1, Int_t i1, |
24 | const AliExternalTrackParam &t2, Int_t i2); | |
e23730c7 | 25 | |
26 | Double_t ChangeMassHypothesis(Int_t code=kK0Short); | |
27 | ||
28 | Int_t GetPdgCode() const {return fPdgCode;} | |
29 | Double_t GetEffMass() const {return fEffMass;} | |
30 | Double_t GetChi2() const {return fChi2;} | |
31 | void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
32 | void GetNPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
33 | void GetPPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
34 | void GetXYZ(Double_t &x, Double_t &y, Double_t &z) const; | |
35 | Double_t GetD(Double_t x0=0.,Double_t y0=0.,Double_t z0=0.) const; | |
36 | Int_t GetNindex() const {return fNidx;} | |
37 | Int_t GetPindex() const {return fPidx;} | |
81e97e0d | 38 | void SetESDindexes(Int_t ip, Int_t im){fNidx=ip;fPidx=im;} |
dfbf942c | 39 | void SetDcaDaughters(Double_t rDcaDaughters=0.); |
40 | Double_t GetDcaDaughters() {return fDcaDaughters;} | |
e23730c7 | 41 | protected: |
42 | Int_t fPdgCode; // reconstructed V0's type (PDG code) | |
43 | Double_t fEffMass; // reconstructed V0's effective mass | |
dfbf942c | 44 | Double_t fDcaDaughters; // dca between V0's daughters |
e23730c7 | 45 | Double_t fChi2; // V0's chi2 value |
46 | Double_t fPos[3]; // V0's position (global) | |
47 | Double_t fPosCov[6]; // covariance matrix of the vertex position | |
48 | ||
49 | Int_t fNidx; // index of the negative daughter | |
50 | Double_t fNmom[3]; // momentum of the negative daughter (global) | |
51 | Double_t fNmomCov[6]; // covariance matrix of the negative daughter mom. | |
52 | ||
53 | Int_t fPidx; // index of the positive daughter | |
54 | Double_t fPmom[3]; // momentum of the positive daughter (global) | |
55 | Double_t fPmomCov[6]; // covariance matrix of the positive daughter mom. | |
56 | ||
57 | ClassDef(AliESDv0,1) // ESD V0 vertex | |
58 | }; | |
59 | ||
60 | inline | |
61 | void AliESDv0::GetNPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const { | |
62 | px=fNmom[0]; py=fNmom[1]; pz=fNmom[2]; | |
63 | } | |
64 | ||
65 | inline | |
66 | void AliESDv0::GetPPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const { | |
67 | px=fPmom[0]; py=fPmom[1]; pz=fPmom[2]; | |
68 | } | |
69 | ||
dfbf942c | 70 | inline |
71 | void AliESDv0::SetDcaDaughters(Double_t rDcaDaughters){ | |
72 | fDcaDaughters=rDcaDaughters; | |
73 | } | |
74 | ||
e23730c7 | 75 | #endif |
76 | ||
77 |