27-may-2001 NvE New class AliEvent introduced and RALICELinkDef.h & co. updated accor...
[u/mrichter/AliRoot.git] / RALICE / AliTrack.h
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d88f97cc 1#ifndef ALITRACK_H
2#define ALITRACK_H
959fbac5 3
3da30618 4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
6
f531a546 7// $Id$
3da30618 8
959fbac5 9
d88f97cc 10#include "TObject.h"
11#include "TObjArray.h"
f531a546 12#include "TArrayD.h"
d88f97cc 13
959fbac5 14#include "AliSignal.h"
d88f97cc 15#include "AliBoost.h"
959fbac5 16#include "AliPosition.h"
d88f97cc 17
18class AliTrack : public TObject,public Ali4Vector
19{
20 public:
21 AliTrack(); // Default constructor
22 ~AliTrack(); // Destructor
23 void Reset(); // Reset all values to 0
24 void Set4Momentum(Ali4Vector& p); // Set track 4-momentum
25 void Set3Momentum(Ali3Vector& p); // Set track 3-momentum
959fbac5 26 void SetMass(Double_t m,Double_t dm=0); // Set particle mass and error
f531a546 27 void SetMass(); // Set mass and error to mass hypothesis with highest prob.
d88f97cc 28 void SetCharge(Float_t q); // Set particle charge
29 void Info(TString f="car"); // Print track information for coord. frame f
30 void List(TString f="car"); // Print track and decay level 1 information for coord. frame f
31 void ListAll(TString f="car"); // Print track and all decay level information for coord. frame f
32 Ali3Vector Get3Momentum(); // Provide track 3-momentum
33 Double_t GetMomentum(); // Provide value of track 3-momentum
34 Double_t GetMass(); // Provide particle mass
35 Float_t GetCharge(); // Provide particle charge
36 Double_t GetEnergy(); // Provide particle total energy
37 void Decay(Double_t m1,Double_t m2,Double_t thcms,Double_t phicms); // Perform 2-body decay
38 Int_t GetNdecay(); // Provide number of decay products
39 AliTrack* GetDecayTrack(Int_t j); // Access to decay produced track number j
959fbac5 40 void AddSignal(AliSignal& s); // Relate an AliSignal to this track
41 void RemoveSignal(AliSignal& s); // Remove related AliSignal from this track
42 Int_t GetNsignals(); // Provide number of related AliSignals
43 AliSignal* GetSignal(Int_t j); // Access to the related AliSignal number j
44 void SetBeginPoint(AliPosition p);// Set the track begin-point
45 AliPosition GetBeginPoint(); // Provide the track begin-point
46 void SetEndPoint(AliPosition p); // Set the track end-point
47 AliPosition GetEndPoint(); // Provide the track end-point
f531a546 48 void AddMassHypothesis(Double_t prob,Double_t m,Double_t dm=0); // Add mass hypothesis data
49 Int_t GetNMassHypotheses(); // Provide number of mass hypotheses
50 Double_t GetMassHypothesis(Int_t j=0); // Provide mass of jth hypothesis
51 Double_t GetMassHypothesisProb(Int_t j=0); // Provide prob. of jth mass hypothesis
52 void RemoveMassHypothesis(Int_t j); // Remove the jth mass hypothesis
d88f97cc 53
54 protected:
959fbac5 55 Float_t fQ; // The charge of the particle
56 Int_t fNdec; // The number of decay products
57 TObjArray* fDecays; // The array of decay produced tracks
58 Int_t fNsig; // The number of related AliSignals
59 TObjArray* fSignals; // The array of related AliSignals
60 AliPosition fBegin; // The begin-point of the track
61 AliPosition fEnd; // The end-point of the track
f531a546 62 Int_t fNmasses; // The number of mass hypotheses
63 TArrayD* fMasses; // The various mass hypotheses
64 TArrayD* fDmasses; // The errors on the various masses
65 TArrayD* fPmasses; // The probabilities of the various mass hypotheses
d88f97cc 66
67 private:
68 void Dump(AliTrack* t,Int_t n,TString f); // Recursively print all decay levels
69
959fbac5 70 ClassDef(AliTrack,1) // Handling of the attributes of a reconstructed particle track.
d88f97cc 71};
72#endif