1 #ifndef AliAODMCParticle_H
2 #define AliAODMCParticle_H
3 /* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
7 //-------------------------------------------------------------------------
8 // AliVParticle realisation for MC Particles in the AOD
9 // Stripped dow AliMCParticle
10 // Author: Christian Klein Bösing, CERN
11 //-------------------------------------------------------------------------
14 #include <TParticlePDG.h>
19 #include "AliTrackReference.h"
20 #include "AliVParticle.h"
21 #include "AliMCParticle.h"
27 class AliAODMCParticle: public AliVParticle {
30 AliAODMCParticle(AliMCParticle* part, Int_t label=0,Int_t flag = 0);
31 virtual ~AliAODMCParticle(){};
32 AliAODMCParticle(const AliAODMCParticle& mcPart);
33 AliAODMCParticle& operator=(const AliAODMCParticle& mcPart);
36 virtual Double_t Px() const;
37 virtual Double_t Py() const;
38 virtual Double_t Pz() const;
39 virtual Double_t Pt() const;
40 virtual Double_t P() const;
41 virtual Bool_t PxPyPz(Double_t p[3]) const;
43 virtual Double_t OneOverPt() const;
44 virtual Double_t Phi() const;
45 virtual Double_t Theta() const;
47 virtual Double_t Xv() const;
48 virtual Double_t Yv() const;
49 virtual Double_t Zv() const;
50 virtual Bool_t XvYvZv(Double_t x[3]) const;
51 virtual Double_t T() const;
53 virtual Double_t E() const;
54 virtual Double_t M() const;
56 virtual Double_t Eta() const;
57 virtual Double_t Y() const;
59 virtual Short_t Charge() const;
61 virtual Int_t Label() const;
62 virtual Int_t GetLabel() const {return Label();}
65 virtual const Double_t *PID() const {return 0;} // return PID object (to be defined, still)
68 virtual Double_t GetCalcMass() const;
69 virtual void SetDaughter(Int_t i,Int_t id){if(i<2)fDaughter[i] = id;}
70 virtual Int_t GetDaughter(Int_t i) const {return fDaughter[i];}
71 virtual Int_t GetNDaughters () const { return fDaughter[1]>0 ? fDaughter[1]-fDaughter[0]+1 : 0;}
72 virtual void SetMother(Int_t im){fMother = im;}
73 virtual Int_t GetMother() const {return fMother;}
74 virtual void Print(const Option_t *opt = "") const;
75 virtual Int_t GetPdgCode() const { return fPdgCode;}
77 enum { kPrimary = 1<<0, kPhysicalPrim = 1<<1 };
78 void SetFlag(UInt_t flag){fFlag = flag;}
79 UInt_t GetFlag() const {return fFlag;}
82 // for the status we use the upper 16 bits/2 bytes of the flag word
83 void SetStatus(Int_t status){
84 // a TParticle can have a negative stuts, catch this here and do nothing
86 // reset the upper bins keep the lower bins
89 fFlag |= (((UInt_t)status)<<16);
91 UInt_t GetStatus() const {
97 void SetPrimary(Bool_t b = kTRUE){
98 if(b)fFlag |= kPrimary;
99 else fFlag &= ~kPrimary;
101 Bool_t IsPrimary() const {return ((fFlag&kPrimary)==kPrimary);}
103 void SetPhysicalPrimary(Bool_t b = kTRUE){
104 if(b)fFlag |= kPhysicalPrim;
105 else fFlag &= ~kPhysicalPrim;
107 Bool_t IsPhysicalPrimary() const {return ((fFlag&kPhysicalPrim)==kPhysicalPrim);}
108 static const char* StdBranchName(){return fgkStdBranchName.Data();}
112 static TString fgkStdBranchName; // Standard branch name
115 Int_t fPdgCode; // PDG code of the particle
116 UInt_t fFlag; // Flag for indication of primary etc
117 Int_t fLabel; // Label of the original MCParticle
118 Int_t fMother; // Index of the mother particles
119 Int_t fDaughter[2]; // Indices of the daughter particles
120 Double32_t fPx; // x component of momentum
121 Double32_t fPy; // y component of momentum
122 Double32_t fPz; // z component of momentum
123 Double32_t fE; // [0.,0.,12]
125 Double32_t fVx; // [0.,0.,12] x of production vertex
126 Double32_t fVy; // [0.,0.,12] y of production vertex
127 Double32_t fVz; // [0.,0.,12] z of production vertex
128 Double32_t fVt; // [0.,0.,12] t of production vertex
130 // Copy the uniquID to another data member? unique ID is correctly handled
131 // via TOBject Copy construct but not by AliVParticle ctor (no passing of
133 // Need a flag for primaries?
136 const TMCProcess kMCprocesses[kMaxMCProcess] =
138 kPNoProcess, kPMultipleScattering, kPEnergyLoss, kPMagneticFieldL,
139 kPDecay, kPPair, kPCompton, kPPhotoelectric, kPBrem, kPDeltaRay,
140 kPAnnihilation, kPHadronic, kPNoProcess, kPEvaporation, kPNuclearFission,
141 kPNuclearAbsorption, kPPbarAnnihilation, kPNCapture, kPHElastic,
142 kPHInhelastic, kPMuonNuclear, kPTOFlimit,kPPhotoFission, kPNoProcess,
143 kPRayleigh, kPNoProcess, kPNoProcess, kPNoProcess, kPNull, kPStop
147 ClassDef(AliAODMCParticle,4) // AliVParticle realisation for AODMCParticles
151 inline Double_t AliAODMCParticle::Px() const {return fPx;}
152 inline Double_t AliAODMCParticle::Py() const {return fPy;}
153 inline Double_t AliAODMCParticle::Pz() const {return fPz;}
154 inline Double_t AliAODMCParticle::Pt() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);}
155 inline Double_t AliAODMCParticle::P() const {return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz); }
156 inline Double_t AliAODMCParticle::OneOverPt() const {return 1. / Pt();}
157 inline Bool_t AliAODMCParticle::PxPyPz(Double_t p[3]) const { p[0] = fPx; p[1] = fPy; p[2] = fPz; return kTRUE; }
158 inline Double_t AliAODMCParticle::Phi() const {return TMath::Pi()+TMath::ATan2(-fPy,-fPx); } // note that Phi() returns an angle between 0 and 2pi
159 inline Double_t AliAODMCParticle::Theta() const {return (fPz==0)?TMath::PiOver2():TMath::ACos(fPz/P()); }
160 inline Double_t AliAODMCParticle::Xv() const {return fVx;}
161 inline Double_t AliAODMCParticle::Yv() const {return fVy;}
162 inline Double_t AliAODMCParticle::Zv() const {return fVz;}
163 inline Bool_t AliAODMCParticle::XvYvZv(Double_t x[3]) const { x[0] = fVx; x[1] = fVy; x[2] = fVz; return kTRUE; }
164 inline Double_t AliAODMCParticle::T() const {return fVt;}
165 inline Double_t AliAODMCParticle::E() const {return fE;}
166 inline Double_t AliAODMCParticle::Eta() const {
168 if (pmom != TMath::Abs(fPz)) return 0.5*TMath::Log((pmom+fPz)/(pmom-fPz));
173 inline Double_t AliAODMCParticle::Y() const
178 if (e > TMath::Abs(pz)) {
179 return 0.5*TMath::Log((e+pz)/(e-pz));
185 inline Int_t AliAODMCParticle::Label() const {return fLabel;}
187 inline Double_t AliAODMCParticle::GetCalcMass() const {
189 Double_t m2 = E()*E()-Px()*Px()-Py()*Py()-Pz()*Pz();
191 return TMath::Sqrt(m2);