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a9a2d814 | 1 | #ifndef ALICASCADEVERTEX_H |
2 | #define ALICASCADEVERTEX_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 | // Cascade Vertex Class | |
9 | // | |
10 | // Origin: Christian Kuhn, IReS, Strasbourg, christian.kuhn@ires.in2p3.fr | |
11 | //------------------------------------------------------------------------- | |
12 | ||
13 | #include <TObject.h> | |
14 | #include "AliPDG.h" | |
15 | ||
16 | class AliITStrackV2; | |
17 | class AliV0vertex; | |
18 | ||
19 | #define kXiMinus 3312 | |
20 | #define kXiPlusBar -3312 | |
21 | #define kOmegaMinus 3334 | |
22 | #define kOmegaPlusBar -3334 | |
23 | ||
24 | class AliCascadeVertex : public TObject { | |
25 | public: | |
26 | AliCascadeVertex(); | |
27 | AliCascadeVertex(const AliV0vertex &vtx, const AliITStrackV2 &trk); | |
28 | ||
29 | void ChangeMassHypothesis(Int_t code=kXiMinus); | |
30 | ||
31 | Int_t GetPdgCode() const {return fPdgCode;} | |
32 | Double_t GetEffMass() const {return fEffMass;} | |
33 | Double_t GetChi2() const {return fChi2;} | |
34 | void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const; | |
35 | void GetXYZ(Double_t &x, Double_t &y, Double_t &z) const; | |
36 | Double_t GetD(Double_t x0=0.,Double_t y0=0.,Double_t z0=0.) const; | |
37 | void GetV0labels(Int_t &n, Int_t &p) const {n=fV0lab[0]; p=fV0lab[1];} | |
38 | Int_t GetBachelorLabel() const {return fBachLab;} | |
39 | ||
40 | private: | |
41 | Int_t fPdgCode; // reconstructed cascade type (PDG code) | |
42 | Double_t fEffMass; // reconstructed cascade effective mass | |
43 | Double_t fChi2; // chi2 value | |
44 | Double_t fPos[3]; // cascade vertex position (global) | |
45 | Double_t fPosCov[6]; // covariance matrix of the vertex position | |
46 | ||
47 | Int_t fV0lab[2]; // labels of the V0 daughter tracks | |
48 | Double_t fV0mom[3]; // V0 momentum (global) | |
49 | Double_t fV0momCov[6]; // covariance matrix of the V0 momentum. | |
50 | ||
51 | Int_t fBachLab; // label of the bachelor track | |
52 | Double_t fBachMom[3]; // bachelor momentum (global) | |
53 | Double_t fBachMomCov[6]; // covariance matrix of the bachelor momentum. | |
54 | ||
55 | ClassDef(AliCascadeVertex,1) // reconstructed cascade vertex | |
56 | }; | |
57 | ||
58 | #endif | |
59 | ||
60 |