1 #ifndef AliMuonForwardTrackPair_H
2 #define AliMuonForwardTrackPair_H
4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
7 //====================================================================================================================================================
9 // Description of an ALICE muon forward track pair, i.e. a pair of AliMuonForwardTrack objects
11 // Contact author: antonio.uras@cern.ch
13 //====================================================================================================================================================
16 #include "AliMUONTrackParam.h"
17 #include "TParticle.h"
18 #include "AliMuonForwardTrack.h"
19 #include "TClonesArray.h"
20 #include "TDatabasePDG.h"
21 #include "AliMUONTrackExtrap.h"
22 #include "TLorentzVector.h"
24 //====================================================================================================================================================
26 class AliMuonForwardTrackPair : public TObject {
30 AliMuonForwardTrackPair();
31 AliMuonForwardTrackPair(AliMuonForwardTrack *track0, AliMuonForwardTrack *track1);
33 AliMuonForwardTrackPair(const AliMuonForwardTrackPair&);
34 AliMuonForwardTrackPair &operator=(const AliMuonForwardTrackPair&);
35 virtual void Clear(const Option_t* /*opt*/) { fMuonForwardTracks->Delete(); delete fMuonForwardTracks; fMuonForwardTracks = 0x0; }
37 virtual ~AliMuonForwardTrackPair() { fMuonForwardTracks->Delete(); delete fMuonForwardTracks; }
39 AliMuonForwardTrack* GetTrack(Int_t iTrack) {
40 if (iTrack==0 || iTrack==1) return (AliMuonForwardTrack*) fMuonForwardTracks->At(iTrack);
44 Int_t GetCharge() { return GetTrack(0)->GetCharge() + GetTrack(1)->GetCharge(); }
47 void SetKinem(Double_t z, Int_t nClusters=-1);
48 Bool_t IsKinemSet() { return fIsKinemSet; }
50 void SetPointOfClosestApproach();
51 void GetPointOfClosestApproach(Double_t *xyz) {
52 xyz[0] = fXPointOfClosestApproach;
53 xyz[1] = fYPointOfClosestApproach;
54 xyz[2] = fZPointOfClosestApproach;
57 Double_t GetWeightedOffset(Double_t x, Double_t y, Double_t z);
58 Double_t GetWeightedOffsetAtPCA();
59 Double_t GetPCAQuality();
60 Double_t GetMassWithoutMFT(Double_t x, Double_t y, Double_t z, Int_t nClusters=-1);
61 Double_t GetMassMC() { return fKinemMC.M(); }
62 Double_t GetRapidityMC() { return fKinemMC.Rapidity(); }
63 Double_t GetPtMC() { return fKinemMC.Pt(); }
64 Double_t GetMass() { return fKinem.M(); }
65 Double_t GetRapidity() { return fKinem.Rapidity(); }
66 Double_t GetPx() { return fKinem.Px(); }
67 Double_t GetPy() { return fKinem.Py(); }
68 Double_t GetPz() { return fKinem.Pz(); }
69 Double_t GetPt() { return fKinem.Pt(); }
75 TClonesArray *fMuonForwardTracks;
76 TLorentzVector fKinemMC, fKinem;
79 Double_t fXPointOfClosestApproach, fYPointOfClosestApproach, fZPointOfClosestApproach;
81 ClassDef(AliMuonForwardTrackPair,1)
85 //====================================================================================================================================================