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AliITSPreprocessorSPD.cxx: Algorithm changed. Read from database before update. Unpac...
[u/mrichter/AliRoot.git] / STEER / AliESDv0.h
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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
d6a49f20 12// Origin: Iouri Belikov, CERN, Jouri.Belikov@cern.ch
13// Modified by: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
14// and Boris Hippolyte,IPHC, hippolyt@in2p3.fr
e23730c7 15//-------------------------------------------------------------------------
16
17#include <TObject.h>
18#include <TPDGCode.h>
d6a49f20 19#include "AliESDV0Params.h"
20#include "AliExternalTrackParam.h"
e23730c7 21
22class AliESDv0 : public TObject {
23public:
24 AliESDv0();
c7bafca9 25 AliESDv0(const AliExternalTrackParam &t1, Int_t i1,
26 const AliExternalTrackParam &t2, Int_t i2);
e23730c7 27
c028b974 28 AliESDv0(const AliESDv0&);
29 virtual ~AliESDv0();
c028b974 30
e23730c7 31 Double_t ChangeMassHypothesis(Int_t code=kK0Short);
32
c028b974 33 Int_t GetPdgCode() const {return fPdgCode;}
b75d63a7 34 Float_t GetEffMass() const {return fEffMass;}
35 Float_t GetChi2V0() const {return fChi2V0;}
c028b974 36 void GetPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const;
37 void GetNPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const;
38 void GetPPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const;
39 void GetXYZ(Double_t &x, Double_t &y, Double_t &z) const;
b75d63a7 40 Float_t GetD(Double_t x0=0.,Double_t y0=0.,Double_t z0=0.) const;
c028b974 41 Int_t GetNindex() const {return fNidx;}
42 Int_t GetPindex() const {return fPidx;}
c028b974 43 void SetDcaV0Daughters(Double_t rDcaV0Daughters=0.);
b75d63a7 44 Float_t GetDcaV0Daughters() {return fDcaV0Daughters;}
45 Float_t GetV0CosineOfPointingAngle(Double_t&, Double_t&, Double_t&) const;
46 Float_t GetV0CosineOfPointingAngle() const {return fPointAngle;}
47 void SetV0CosineOfPointingAngle(Double_t cpa) {fPointAngle=cpa;}
48 void SetOnFlyStatus(Bool_t status){fOnFlyStatus=status;}
49 Bool_t GetOnFlyStatus() const {return fOnFlyStatus;}
50 const AliExternalTrackParam *GetParamP() const {return &fParamP;}
51 const AliExternalTrackParam *GetParamN() const {return &fParamN;}
52
53
d6a49f20 54
55 // **** The following member functions need to be revised ***
56
57 Double_t GetSigmaY(); // sigma of y coordinate at vertex posistion
58 Double_t GetSigmaZ(); // sigma of z coordinate at vertex posistion
59 Double_t GetSigmaAP0(); // calculate sigma of Point angle resolution at vertex pos.
60 Double_t GetSigmaD0(); // calculate sigma of position resolution at vertex pos.
61 Double_t GetEffectiveSigmaAP0(); // calculate sigma of point angle resolution at vertex pos. effecive parameterization
62 Double_t GetEffectiveSigmaD0(); // calculate sigma of position resolution at vertex pos.
63 Double_t GetMinimaxSigmaAP0(); // calculate mini-max sigma of point angle resolution
64 Double_t GetMinimaxSigmaD0(); // calculate mini-max sigma of dca resolution
65 Double_t GetLikelihoodAP(Int_t mode0, Int_t mode1); // get likelihood for point angle
66 Double_t GetLikelihoodD(Int_t mode0, Int_t mode1); // get likelihood for DCA
67 Double_t GetLikelihoodC(Int_t mode0, Int_t mode1); // get likelihood for Causality
68 //
69 //
d6a49f20 70 static const AliESDV0Params & GetParameterization(){return fgkParams;}
b75d63a7 71 void SetParamP(const AliExternalTrackParam & paramP) {fParamP = paramP;}
72 void SetParamN(const AliExternalTrackParam & paramN) {fParamN = paramN;}
d6a49f20 73 void SetStatus(Int_t status){fStatus=status;}
74 Int_t GetStatus() const {return fStatus;}
b75d63a7 75 Int_t GetIndex(Int_t i) const {return (i==0) ? fNidx : fPidx;}
76 void SetIndex(Int_t i, Int_t ind) {(i==0) ? (fNidx=ind) : (fPidx=ind);}
d6a49f20 77 Double_t *GetAnglep() {return fAngle;}
78 Double_t GetRr() const {return fRr;}
d6a49f20 79 Double_t GetDistSigma() const {return fDistSigma;}
80 void SetDistSigma(Double_t ds) {fDistSigma=ds;}
d6a49f20 81 Float_t GetChi2Before() const {return fChi2Before;}
82 void SetChi2Before(Float_t cb) {fChi2Before=cb;}
83 Float_t GetChi2After() const {return fChi2After;}
84 void SetChi2After(Float_t ca) {fChi2After=ca;}
d6a49f20 85 Float_t GetNAfter() const {return fNAfter;}
86 void SetNAfter(Float_t na) {fNAfter=na;}
87 Float_t GetNBefore() const {return fNBefore;}
88 void SetNBefore(Float_t nb) {fNBefore=nb;}
d6a49f20 89 void SetCausality(Float_t pb0, Float_t pb1, Float_t pa0, Float_t pa1);
90 const Float_t * GetCausalityP() const {return fCausality;}
91 void SetClusters(Int_t *clp, Int_t *clm);
92 const Int_t * GetClusters(Int_t i) const {return fClusters[i];}
93 void SetNormDCAPrim(Float_t nd0, Float_t nd1){fNormDCAPrim[0] = nd0; fNormDCAPrim[1]=nd1;}
94 const Float_t *GetNormDCAPrimP() const {return fNormDCAPrim;}
95
96protected:
97 Bool_t fOnFlyStatus; // if kTRUE, then this V0 is recontructed
98 // "on fly" during the tracking
c028b974 99
b75d63a7 100 Int_t fPdgCode; // reconstructed V0's type (PDG code)
101 Float_t fEffMass; // reconstructed V0's effective mass
102 Float_t fDcaV0Daughters; // dca between V0's daughters
103 Float_t fPointAngle; //cosine of the pointing angle
104 Float_t fChi2V0; // V0's chi2 value
105
106 Double32_t fPos[3]; // V0's position (global)
107 Double32_t fPosCov[6]; // covariance matrix of the vertex position
e23730c7 108
b75d63a7 109 Int_t fNidx; // index of the negative daughter
110 Double32_t fNmom[3]; // momentum of the negative daughter (global)
111 AliExternalTrackParam fParamN; // external parameters of negative particle
112 Int_t fPidx; // index of the positive daughter
113 Double32_t fPmom[3]; // momentum of the positive daughter (global)
114 AliExternalTrackParam fParamP; // external parameters of positive particle
e23730c7 115
e23730c7 116
d6a49f20 117 // **** The following data members need to be revised ***
118
d6a49f20 119 Int_t fClusters[2][6]; //! its clusters
120 //
d6a49f20 121 Float_t fNormDCAPrim[2]; // normalize distance to the priary vertex
d6a49f20 122 //
b75d63a7 123 Double32_t fAngle[3]; //three angles
124 Float_t fRr; //rec position of the vertex
d6a49f20 125 Int_t fStatus; //status
b75d63a7 126 Float_t fDistSigma; //sigma of distance
d6a49f20 127 Float_t fCausality[4]; // causality information - see comments in SetCausality
128 Float_t fChi2Before; //chi2 of the tracks before V0
129 Float_t fNBefore; // number of possible points before V0
130 Float_t fChi2After; // chi2 of the tracks after V0
131 Float_t fNAfter; // number of possible points after V0
132 Float_t fPointAngleFi; //point angle fi
133 Float_t fPointAngleTh; //point angle theta
d6a49f20 134 //
135 // parameterization coefficients
136 static AliESDV0Params fgkParams; // resolution and likelihood parameterization
137
138private:
139 AliESDv0& operator=(const AliESDv0&);
140
b75d63a7 141 ClassDef(AliESDv0,3) // ESD V0 vertex
e23730c7 142};
143
144inline
145void AliESDv0::GetNPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const {
146px=fNmom[0]; py=fNmom[1]; pz=fNmom[2];
147}
148
149inline
150void AliESDv0::GetPPxPyPz(Double_t &px, Double_t &py, Double_t &pz) const {
151px=fPmom[0]; py=fPmom[1]; pz=fPmom[2];
152}
153
dfbf942c 154inline
c028b974 155void AliESDv0::SetDcaV0Daughters(Double_t rDcaV0Daughters){
156 fDcaV0Daughters=rDcaV0Daughters;
dfbf942c 157}
158
e23730c7 159#endif