1 #ifndef ALIAODPARTICLE_H
2 #define ALIAODPARTICLE_H
3 //___________________________________________________________
4 /////////////////////////////////////////////////////////////
6 // class AliAODParticle
8 // Ali HBT Particle: simplified class TParticle
9 // Simplified in order to minimize the size of the object
10 // - we want to keep a lot of such a objects in memory
11 // Additionaly adjusted for HBT Analysies purposes
12 // + pointer to Track Points
13 // + pointer to Cluster Map(s)
15 // Piotr.Skowronski@cern.ch
17 /////////////////////////////////////////////////////////////
19 #include "AliVAODParticle.h"
20 #include <TLorentzVector.h>
22 #include <TDatabasePDG.h>
29 class AliAODParticle: public AliVAODParticle
32 // ****** constructors and destructor
34 AliAODParticle(const AliAODParticle& in);
35 AliAODParticle(const AliVAODParticle& in);
37 AliAODParticle(Int_t pdg, Int_t idx, Double_t px, Double_t py, Double_t pz, Double_t etot,
38 Double_t vx, Double_t vy, Double_t vz, Double_t time);
40 AliAODParticle(Int_t pdg, Float_t prob, Int_t idx, Double_t px, Double_t py, Double_t pz, Double_t etot,
41 Double_t vx, Double_t vy, Double_t vz, Double_t time);
43 AliAODParticle(const TParticle& p, Int_t idx);
45 virtual ~AliAODParticle();
47 AliAODParticle& operator=(const AliAODParticle& in);
49 void Clear(Option_t* /*option*/ ="");//Must be implemented in order to store this object in Clones Array
51 void SetPIDprobability(Int_t pdg, Float_t prob = 1.0);
52 Float_t GetPIDprobability(Int_t pdg) const;
53 Double_t GetProbability(Int_t pdg) const {return GetPIDprobability(pdg);}
55 Int_t GetMostProbable() const { return (fPids)?fPids[0]:0;}
57 Int_t GetPdgCode () const { return (fPids)?fPids[fPdgIdx]:0;}
59 Double_t GetPidProb () const { return (fPidProb)?fPidProb[fPdgIdx]:0;}
61 Int_t GetUID () const { return fIdxInEvent;}
62 Int_t GetNumberOfPids () const { return fNPids;}
63 Int_t GetNthPid (Int_t idx) const;
64 Float_t GetNthPidProb (Int_t idx) const;
66 void SetPdgCode(Int_t pdg, Float_t prob = 1.0);
67 Double_t GetCalcMass () const { return fCalcMass; }
68 Double_t Mass () const { return (GetPDG())?GetPDG()->Mass():-1.;}
71 TParticlePDG* GetPDG () const {return TDatabasePDG::Instance()->GetParticle(GetPdgCode());}
72 Double_t Charge () const { return (GetPDG())?GetPDG()->Charge():1.e8;}
74 Int_t Beauty () { return GetPDG()->Beauty(); }
75 Int_t Charm () { return GetPDG()->Charm(); }
76 Int_t Strangeness () { return GetPDG()->Strangeness();}
77 void ProductionVertex(TLorentzVector &v) const { v.SetXYZT(fVx,fVy,fVz,fVt);}
80 Double_t Vx () const { return fVx;}
81 Double_t Vy () const { return fVy;}
82 Double_t Vz () const { return fVz;}
83 Double_t T () const { return fVt;}
85 Double_t Px () const { return fPx; } //X coordinate of the momentum
86 Double_t Py () const { return fPy; } //Y coordinate of the momentum
87 Double_t Pz () const { return fPz; } //Z coordinate of the momentum
88 Double_t P () const //momentum
89 { return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz); }
91 void Momentum(TLorentzVector &v) const { v.SetPxPyPzE(fPx,fPy,fPz,fE);}
93 Double_t Pt () const //transverse momentum
94 { return TMath::Sqrt(fPx*fPx+fPy*fPy); }
95 Double_t E() const { return fE; }
98 Double_t Eta () const { if (P() != fPz) return 0.5*TMath::Log((P()+fPz)/(P()-fPz));
102 Double_t Y () const { if (fE != fPz) return 0.5*TMath::Log((fE+fPz)/(fE-fPz));
105 Double_t Phi () const { return TMath::Pi()+TMath::ATan2(-fPy,-fPx); }
107 Double_t Theta () const { return (fPz==0)?TMath::PiOver2():TMath::ACos(fPz/P()); }
111 void SetMomentum(Double_t px, Double_t py, Double_t pz, Double_t e)
112 {fPx=px; fPy=py; fPz=pz; fE=e;}
113 void SetMomentum(const TLorentzVector& p)
114 {SetMomentum(p.Px(),p.Py(),p.Pz(),p.Energy());}
116 void SetProductionVertex(Double_t vx, Double_t vy, Double_t vz, Double_t t)
117 {fVx=vx; fVy=vy; fVz=vz; fVt=t;}
118 void SetProductionVertex(const TLorentzVector& v)
119 {SetProductionVertex(v.X(),v.Y(),v.Z(),v.T());}
120 void SetCalcMass(Double_t mass) {fCalcMass = mass;}
122 void SetUID(Int_t id){fIdxInEvent = id;}
124 const Char_t* GetName() const;
125 void Print(const Option_t * opt = "") const;
127 void SetTPCTrackPoints(AliTrackPoints* tpts){fTPCTrackPoints = tpts;}
128 AliTrackPoints* GetTPCTrackPoints() const {return fTPCTrackPoints;}
129 void SetITSTrackPoints(AliTrackPoints* tpts){fITSTrackPoints = tpts;}
130 AliTrackPoints* GetITSTrackPoints() const {return fITSTrackPoints;}
131 void SetClusterMap(AliClusterMap* cm){fClusterMap = cm;}
132 AliClusterMap* GetClusterMap() const {return fClusterMap;}
136 Int_t GetPidSlot(Int_t pdg) const;//returns position of the given PID in fPids (and fPidProb) array.
139 Char_t fPdgIdx; // index of PDG code of the particle in fPids
140 Int_t fIdxInEvent; // index of a particle: the same particle can appear in the event
141 // many times with different pid's. Idx allows to check that they are the same particles
142 Int_t fNPids; // number of non-zero proboble Pids
143 Int_t *fPids; // [fNPids] Array with PIDs
144 Float_t *fPidProb; // [fNPids] PIDs probabilities
145 Double_t fCalcMass; // Calculated mass
148 Double_t fPx; // x component of momentum
149 Double_t fPy; // y component of momentum
150 Double_t fPz; // z component of momentum
151 Double_t fE; // Energy
153 Double_t fVx; // x of production vertex
154 Double_t fVy; // y of production vertex
155 Double_t fVz; // z of production vertex
156 Double_t fVt; // t of production vertex
158 AliTrackPoints* fTPCTrackPoints; // track positions along trajectory - used by anti-merging cut
159 AliTrackPoints* fITSTrackPoints; // track positions along trajectory - used by anti-merging cut
160 AliClusterMap* fClusterMap; // bit map of cluters occupation; 1 if has cluter on given layer/padrow/...
162 ClassDef(AliAODParticle,3) // TParticle vertex particle information