]>
Commit | Line | Data |
---|---|---|
7f6ddf58 | 1 | #ifndef ALIV0VERTEX_H |
2 | #define ALIV0VERTEX_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 | // V0 Vertex Class | |
9 | // | |
10 | // Origin: Iouri Belikov, IReS, Strasbourg, Jouri.Belikov@cern.ch | |
11 | //------------------------------------------------------------------------- | |
12 | ||
13 | #include <TObject.h> | |
14 | #include "AliPDG.h" | |
15 | ||
16 | class AliITStrackV2; | |
17 | ||
18 | class AliV0vertex : public TObject { | |
19 | public: | |
20 | AliV0vertex(); | |
21 | AliV0vertex(const AliITStrackV2 &neg, const AliITStrackV2 &pos); | |
22 | ||
23 | void ChangeMassHypothesis(Int_t code=kLambda0); | |
24 | ||
25 | Int_t GetPdgCode() const {return fPdgCode;} | |
26 | Double_t GetEffMass() const {return fEffMass;} | |
27 | Double_t GetChi2() const {return fChi2;} | |
28 | void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
29 | void GetXYZ(Double_t &x, Double_t &y, Double_t &z) const; | |
30 | Double_t GetD(Double_t x0=0.,Double_t y0=0.,Double_t z0=0.) const; | |
31 | Int_t GetNlabel() const {return fNlab;} | |
32 | Int_t GetPlabel() const {return fPlab;} | |
33 | ||
34 | private: | |
35 | Int_t fPdgCode; // reconstructed V0's type (PDG code) | |
36 | Double_t fEffMass; // reconstructed V0's effective mass | |
37 | Double_t fChi2; // V0's chi2 value | |
38 | Double_t fPos[3]; // V0's position (global) | |
39 | Double_t fPosCov[6]; // covariance matrix of the vertex position | |
40 | ||
41 | Int_t fNlab; // label of the negative daughter | |
42 | Double_t fNmom[3]; // momentum of the negative daughter (global) | |
43 | Double_t fNmomCov[6]; // covariance matrix of the negative daughter mom. | |
44 | ||
45 | Int_t fPlab; // label of the positive daughter | |
46 | Double_t fPmom[3]; // momentum of the positive daughter (global) | |
47 | Double_t fPmomCov[6]; // covariance matrix of the positive daughter mom. | |
48 | ||
49 | ClassDef(AliV0vertex,1) // reconstructed V0 vertex | |
50 | }; | |
51 | ||
52 | #endif | |
53 | ||
54 |