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7f6ddf58 | 1 | #ifndef ALIV0VERTEXER_H |
2 | #define ALIV0VERTEXER_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | //------------------------------------------------------------------ | |
7 | // V0 Vertexer Class | |
18856a77 | 8 | // reads tracks writes out V0 vertices |
7f6ddf58 | 9 | // Origin: Iouri Belikov, IReS, Strasbourg, Jouri.Belikov@cern.ch |
10 | //------------------------------------------------------------------ | |
11 | ||
12 | #include "TObject.h" | |
13 | ||
566abf75 | 14 | class TTree; |
e23730c7 | 15 | class AliESD; |
7f6ddf58 | 16 | |
17 | //_____________________________________________________________________________ | |
18 | class AliV0vertexer : public TObject { | |
19 | public: | |
20 | AliV0vertexer(); | |
21 | AliV0vertexer(const Double_t cuts[7]); | |
22 | void SetCuts(const Double_t cuts[7]); | |
5d390eda | 23 | void SetVertex(Double_t *vtx) { fX=vtx[0]; fY=vtx[1]; fZ=vtx[2]; } |
7f6ddf58 | 24 | |
e23730c7 | 25 | Int_t Tracks2V0vertices(AliESD *event); |
26 | ||
7f6ddf58 | 27 | void GetCuts(Double_t cuts[7]) const; |
18856a77 | 28 | void GetVertex(Double_t *vtx) const { vtx[0]=fX; vtx[1]=fY; vtx[2]=fZ; } |
7f6ddf58 | 29 | |
30 | private: | |
5d390eda | 31 | |
7f6ddf58 | 32 | Double_t fChi2max; // maximal allowed chi2 |
33 | Double_t fDNmin; // min. allowed negative daughter's impact parameter | |
34 | Double_t fDPmin; // min. allowed positive daughter's impact parameter | |
35 | Double_t fDCAmax; // maximal allowed DCA between the daughter tracks | |
36 | Double_t fCPAmax; // maximal allowed cosine of V0's pointing angle | |
37 | Double_t fRmin, fRmax; // max & min radii of the fiducial volume | |
38 | ||
5d390eda | 39 | Double_t fX; // X-coordinate of the primary vertex |
40 | Double_t fY; // Y-coordinate of the primary vertex | |
41 | Double_t fZ; // Z-coordinate of the primary vertex | |
42 | ||
7f6ddf58 | 43 | ClassDef(AliV0vertexer,1) // V0 verterxer |
44 | }; | |
45 | ||
fe12e09c | 46 | inline AliV0vertexer::AliV0vertexer() : |
47 | TObject(), | |
48 | fChi2max(33.), | |
49 | fDNmin(0.015), | |
50 | fDPmin(0.015), | |
51 | fDCAmax(0.01), | |
52 | fCPAmax(0.025), | |
53 | fRmin(0.5), | |
54 | fRmax(2.5), | |
55 | fX(0), | |
56 | fY(0), | |
57 | fZ(0) | |
58 | { | |
7f6ddf58 | 59 | } |
60 | ||
fe12e09c | 61 | inline AliV0vertexer::AliV0vertexer(const Double_t cuts[7]) : |
62 | TObject(), | |
63 | fChi2max(cuts[0]), | |
64 | fDNmin(cuts[1]), | |
65 | fDPmin(cuts[2]), | |
66 | fDCAmax(cuts[3]), | |
67 | fCPAmax(cuts[4]), | |
68 | fRmin(cuts[5]), | |
69 | fRmax(cuts[6]), | |
70 | fX(0), | |
71 | fY(0), | |
72 | fZ(0) | |
73 | { | |
7f6ddf58 | 74 | } |
75 | ||
76 | inline void AliV0vertexer::SetCuts(const Double_t cuts[7]) { | |
77 | fChi2max=cuts[0]; | |
78 | fDNmin=cuts[1]; fDPmin=cuts[2]; | |
79 | fDCAmax=cuts[3]; fCPAmax=cuts[4]; | |
80 | fRmin=cuts[5]; fRmax=cuts[6]; | |
81 | } | |
82 | ||
83 | inline void AliV0vertexer::GetCuts(Double_t cuts[7]) const { | |
84 | cuts[0]=fChi2max; | |
85 | cuts[1]=fDNmin; cuts[2]=fDPmin; | |
86 | cuts[3]=fDCAmax; cuts[4]=fCPAmax; | |
87 | cuts[5]=fRmin; cuts[6]=fRmax; | |
88 | } | |
89 | ||
90 | #endif | |
91 | ||
92 |