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(const 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;}
76 virtual Int_t PdgCode() const { return GetPdgCode();}
78 enum { kPrimary = 1<<0, kPhysicalPrim = 1<<1 };
79 void SetFlag(UInt_t flag){fFlag = flag;}
80 UInt_t GetFlag() const {return fFlag;}
83 // for the status we use the upper 16 bits/2 bytes of the flag word
84 void SetStatus(Int_t status){
85 // a TParticle can have a negative stuts, catch this here and do nothing
87 // reset the upper bins keep the lower bins
90 fFlag |= (((UInt_t)status)<<16);
92 UInt_t GetStatus() const {
98 void SetPrimary(Bool_t b = kTRUE){
99 if(b)fFlag |= kPrimary;
100 else fFlag &= ~kPrimary;
102 Bool_t IsPrimary() const {return ((fFlag&kPrimary)==kPrimary);}
104 void SetPhysicalPrimary(Bool_t b = kTRUE){
105 if(b)fFlag |= kPhysicalPrim;
106 else fFlag &= ~kPhysicalPrim;
108 Bool_t IsPhysicalPrimary() const {return ((fFlag&kPhysicalPrim)==kPhysicalPrim);}
109 static const char* StdBranchName(){return fgkStdBranchName.Data();}
113 static TString fgkStdBranchName; // Standard branch name
116 Int_t fPdgCode; // PDG code of the particle
117 UInt_t fFlag; // Flag for indication of primary etc
118 Int_t fLabel; // Label of the original MCParticle
119 Int_t fMother; // Index of the mother particles
120 Int_t fDaughter[2]; // Indices of the daughter particles
121 Double32_t fPx; // x component of momentum
122 Double32_t fPy; // y component of momentum
123 Double32_t fPz; // z component of momentum
124 Double32_t fE; // Energy
126 Double32_t fVx; // [0.,0.,12] x of production vertex
127 Double32_t fVy; // [0.,0.,12] y of production vertex
128 Double32_t fVz; // [0.,0.,12] z of production vertex
129 Double32_t fVt; // [0.,0.,12] t of production vertex
131 // Copy the uniquID to another data member? unique ID is correctly handled
132 // via TOBject Copy construct but not by AliVParticle ctor (no passing of
134 // Need a flag for primaries?
137 const TMCProcess kMCprocesses[kMaxMCProcess] =
139 kPNoProcess, kPMultipleScattering, kPEnergyLoss, kPMagneticFieldL,
140 kPDecay, kPPair, kPCompton, kPPhotoelectric, kPBrem, kPDeltaRay,
141 kPAnnihilation, kPHadronic, kPNoProcess, kPEvaporation, kPNuclearFission,
142 kPNuclearAbsorption, kPPbarAnnihilation, kPNCapture, kPHElastic,
143 kPHInhelastic, kPMuonNuclear, kPTOFlimit,kPPhotoFission, kPNoProcess,
144 kPRayleigh, kPNoProcess, kPNoProcess, kPNoProcess, kPNull, kPStop
148 ClassDef(AliAODMCParticle,5) // AliVParticle realisation for AODMCParticles
152 inline Double_t AliAODMCParticle::Px() const {return fPx;}
153 inline Double_t AliAODMCParticle::Py() const {return fPy;}
154 inline Double_t AliAODMCParticle::Pz() const {return fPz;}
155 inline Double_t AliAODMCParticle::Pt() const {return TMath::Sqrt(fPx*fPx+fPy*fPy);}
156 inline Double_t AliAODMCParticle::P() const {return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz); }
157 inline Double_t AliAODMCParticle::OneOverPt() const {return 1. / Pt();}
158 inline Bool_t AliAODMCParticle::PxPyPz(Double_t p[3]) const { p[0] = fPx; p[1] = fPy; p[2] = fPz; return kTRUE; }
159 inline Double_t AliAODMCParticle::Phi() const {return TMath::Pi()+TMath::ATan2(-fPy,-fPx); } // note that Phi() returns an angle between 0 and 2pi
160 inline Double_t AliAODMCParticle::Theta() const {return (fPz==0)?TMath::PiOver2():TMath::ACos(fPz/P()); }
161 inline Double_t AliAODMCParticle::Xv() const {return fVx;}
162 inline Double_t AliAODMCParticle::Yv() const {return fVy;}
163 inline Double_t AliAODMCParticle::Zv() const {return fVz;}
164 inline Bool_t AliAODMCParticle::XvYvZv(Double_t x[3]) const { x[0] = fVx; x[1] = fVy; x[2] = fVz; return kTRUE; }
165 inline Double_t AliAODMCParticle::T() const {return fVt;}
166 inline Double_t AliAODMCParticle::E() const {return fE;}
167 inline Double_t AliAODMCParticle::Eta() const {
169 if (pmom != TMath::Abs(fPz)) return 0.5*TMath::Log((pmom+fPz)/(pmom-fPz));
174 inline Double_t AliAODMCParticle::Y() const
179 if (e > TMath::Abs(pz)) {
180 return 0.5*TMath::Log((e+pz)/(e-pz));
186 inline Int_t AliAODMCParticle::Label() const {return fLabel;}
188 inline Double_t AliAODMCParticle::GetCalcMass() const {
190 Double_t m2 = E()*E()-Px()*Px()-Py()*Py()-Pz()*Pz();
192 return TMath::Sqrt(m2);