3 /* Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
8 //-------------------------------------------------------------------------
9 // base class for ESD and AOD particles
10 // Author: Markus Oldenburg, CERN
11 //-------------------------------------------------------------------------
16 const Double_t kAlmost1=0.999;
17 const Double_t kAlmost0=1e-33;
19 const Double_t kB2C=0.299792458e-3;
20 const Double_t kAlmost0Field=1.e-13;
22 class AliVParticle: public TObject {
26 virtual ~AliVParticle() { }
27 AliVParticle(const AliVParticle& vPart);
28 AliVParticle& operator=(const AliVParticle& vPart);
31 virtual Double_t Px() const = 0;
32 virtual Double_t Py() const = 0;
33 virtual Double_t Pz() const = 0;
34 virtual Double_t Pt() const = 0;
35 virtual Double_t P() const = 0;
36 virtual Bool_t PxPyPz(Double_t p[3]) const = 0;
38 virtual Double_t Xv() const = 0;
39 virtual Double_t Yv() const = 0;
40 virtual Double_t Zv() const = 0;
41 virtual Bool_t XvYvZv(Double_t x[3]) const = 0;
43 virtual Double_t OneOverPt() const = 0;
44 virtual Double_t Phi() const = 0;
45 virtual Double_t Theta() const = 0;
48 virtual Double_t E() const = 0;
49 virtual Double_t M() const = 0;
51 virtual Double_t Eta() const = 0;
52 virtual Double_t Y() const = 0;
54 virtual Short_t Charge() const = 0;
57 virtual const Double_t *PID() const = 0; // return PID object (to be defined, still)
59 // coordinate system conversions
60 Bool_t Local2GlobalMomentum(Double_t p[3], Double_t alpha) const;
61 Bool_t Local2GlobalPosition(Double_t r[3], Double_t alpha) const;
62 Bool_t Global2LocalMomentum(Double_t p[3], Short_t charge, Double_t &alpha) const;
63 Bool_t Global2LocalPosition(Double_t r[3], Double_t alpha) const;
65 ClassDef(AliVParticle,0) // base class for particles