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1 | //Simplified TParticle class | |
2 | ||
3 | ||
4 | #include "AliHBTParticle.h" | |
5 | ||
6 | #include <TParticle.h> | |
7 | ||
8 | ClassImp(AliHBTParticle) | |
9 | ||
10 | //______________________________________________________________________________ | |
11 | AliHBTParticle::AliHBTParticle(): | |
12 | fPdgCode(0), fCalcMass(0),fPx(0), fPy(0),fPz(0),fE(0), fVx(0), fVy(0),fVz(0),fVt(0) | |
13 | {//empty particle | |
14 | } | |
15 | ||
16 | ||
17 | //______________________________________________________________________________ | |
18 | AliHBTParticle::AliHBTParticle(Int_t pdg, Double_t px, Double_t py, Double_t pz, Double_t etot, | |
19 | Double_t vx, Double_t vy, Double_t vz, Double_t time): | |
20 | fPdgCode(pdg), | |
21 | fPx(px), fPy(py),fPz(pz),fE(etot), | |
22 | fVx(vx), fVy(vy),fVz(vz),fVt(time) | |
23 | { | |
24 | //mormal constructor | |
25 | ||
26 | if (GetPDG()) { | |
27 | fCalcMass = GetPDG()->Mass(); | |
28 | } else { | |
29 | Double_t a2 = fE*fE -fPx*fPx -fPy*fPy -fPz*fPz; | |
30 | if (a2 >= 0) fCalcMass = TMath::Sqrt(a2); | |
31 | else fCalcMass = -TMath::Sqrt(-a2); | |
32 | } | |
33 | } | |
34 | ||
35 | //______________________________________________________________________________ | |
36 | AliHBTParticle::AliHBTParticle(const TParticle &p): | |
37 | fPdgCode(p.GetPdgCode()),fCalcMass(p.GetCalcMass()), | |
38 | fPx(p.Px()),fPy(p.Py()),fPz(p.Pz()),fE(p.Energy()), | |
39 | fVx(p.Vx()),fVy(p.Vy()),fVz(p.Vz()),fVt(p.T()) | |
40 | { | |
41 | //all copied in the initialization | |
42 | ||
43 | } | |
44 | ||
45 | //______________________________________________________________________________ | |
46 | const Char_t* AliHBTParticle::GetName() const | |
47 | { | |
48 | static char def[4] = "XXX"; | |
49 | const TParticlePDG *ap = TDatabasePDG::Instance()->GetParticle(fPdgCode); | |
50 | if (ap) return ap->GetName(); | |
51 | else return def; | |
52 | } | |
53 | ||
54 | ||
55 | //______________________________________________________________________________ | |
56 | ||
57 |