PWG3/vertexingHF/AliAODRecoDecayHF.h

   1 #ifndef ALIAODRECODECAYHF_H
   2 #define ALIAODRECODECAYHF_H
   3 /* Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. *
   4  * See cxx source for full Copyright notice                               */
   5
   6 //***********************************************************
   7 // Class AliAODRecoDecayHF
   8 // base class for AOD reconstructed heavy-flavour decays
   9 // Author: A.Dainese, andrea.dainese@lnl.infn.it
  10 //***********************************************************
  11
  12 #include <TRef.h>
  13 #include <TList.h>
  14 #include "AliAODTrack.h"
  15 #include "AliAODRecoDecay.h"
  16
  17 class AliRDHFCuts;
  18 class AliKFParticle;
  19
  20 class AliAODRecoDecayHF : public AliAODRecoDecay {
  21
  22  public:
  23
  24   AliAODRecoDecayHF();
  25   AliAODRecoDecayHF(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
  26                     Double_t *px,Double_t *py,Double_t *pz,
  27                     Double_t *d0,Double_t *d0err);
  28   AliAODRecoDecayHF(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
  29                     Double_t *d0,Double_t *d0err);
  30   AliAODRecoDecayHF(Double_t vtx1[3],Double_t vtx2[3],
  31                     Int_t nprongs,Short_t charge,
  32                     Double_t *px,Double_t *py,Double_t *pz,Double_t *d0);
  33   virtual ~AliAODRecoDecayHF();
  34
  35   AliAODRecoDecayHF(const AliAODRecoDecayHF& source);
  36   AliAODRecoDecayHF& operator=(const AliAODRecoDecayHF& source);
  37
  38
  39   // primary vertex
  40   void SetPrimaryVtxRef(TObject *vtx) { fEventPrimaryVtx = vtx; }
  41   AliAODVertex* GetPrimaryVtxRef() const { return (AliAODVertex*)(fEventPrimaryVtx.GetObject()); }
  42   void SetOwnPrimaryVtx(const AliAODVertex *vtx) { UnsetOwnPrimaryVtx(); fOwnPrimaryVtx = new AliAODVertex(*vtx);}
  43   void CheckOwnPrimaryVtx() const
  44     {if(!fOwnPrimaryVtx) printf("fOwnPrimaryVtx not set"); return;}
  45   AliAODVertex* GetOwnPrimaryVtx() const {return fOwnPrimaryVtx;}
  46   void GetOwnPrimaryVtx(Double_t vtx[3]) const
  47     {CheckOwnPrimaryVtx();fOwnPrimaryVtx->GetPosition(vtx);}
  48   void UnsetOwnPrimaryVtx() {if(fOwnPrimaryVtx) {delete fOwnPrimaryVtx; fOwnPrimaryVtx=0;} return;}
  49   AliAODVertex* GetPrimaryVtx() const { return (GetOwnPrimaryVtx() ? GetOwnPrimaryVtx() : GetPrimaryVtxRef()); }
  50
  51   // kinematics & topology
  52   Double_t DecayLength() const
  53     { return AliAODRecoDecay::DecayLength(GetPrimaryVtx());}
  54   Double_t DecayLengthError() const
  55     { return AliAODRecoDecay::DecayLengthError(GetPrimaryVtx());}
  56   Double_t NormalizedDecayLength() const
  57     { return AliAODRecoDecay::NormalizedDecayLength(GetPrimaryVtx());}
  58   Double_t DecayLengthXY() const
  59     { return AliAODRecoDecay::DecayLengthXY(GetPrimaryVtx());}
  60   Double_t DecayLengthXYError() const
  61     { return AliAODRecoDecay::DecayLengthXYError(GetPrimaryVtx());}
  62   Double_t NormalizedDecayLengthXY() const
  63     { return AliAODRecoDecay::NormalizedDecayLengthXY(GetPrimaryVtx());}
  64   Double_t Ct(UInt_t pdg) const
  65     { return AliAODRecoDecay::Ct(pdg,GetPrimaryVtx());}
  66   Double_t CosPointingAngle() const
  67     { return AliAODRecoDecay::CosPointingAngle(GetPrimaryVtx());}
  68   Double_t CosPointingAngleXY() const
  69     { return AliAODRecoDecay::CosPointingAngleXY(GetPrimaryVtx());}
  70   Double_t ImpParXY() const
  71     { return AliAODRecoDecay::ImpParXY(GetPrimaryVtx());}
  72   Double_t QtProngFlightLine(Int_t ip) const
  73     { return AliAODRecoDecay::QtProngFlightLine(ip,GetPrimaryVtx());}
  74   Double_t QlProngFlightLine(Int_t ip) const
  75     { return AliAODRecoDecay::QlProngFlightLine(ip,GetPrimaryVtx());}
  76
  77   // prongs
  78   Double_t Getd0errProng(Int_t ip) const {return fd0err[ip];}
  79   Double_t Normalizedd0Prong(Int_t ip) const
  80     {return Getd0Prong(ip)/Getd0errProng(ip);}
  81
  82   void SetProngIDs(Int_t nIDs,UShort_t *id);
  83   UShort_t GetProngID(Int_t ip) const
  84     {if(fProngID) {return fProngID[ip];} else {return 9999;}}
  85
  86   // ITS clustermap for daughters
  87   Bool_t DaughterHasPointOnITSLayer(Int_t dg,Int_t l) const;
  88
  89   // check if it is like-sign
  90   Bool_t IsLikeSign() const;
  91
  92   // list of cuts
  93   void SetListOfCutsRef(TObject *obj) {fListOfCuts=obj;}
  94   TList *GetListOfCuts() const {return (TList*)(fListOfCuts.GetObject());}
  95   AliRDHFCuts *GetCuts(const char* name) const;
  96
  97   // vertexing KF:
  98   AliKFParticle *ApplyVertexingKF(Int_t *iprongs,Int_t nprongs,Int_t *pdgs,
  99                                  Bool_t topoCostraint,Double_t bzkG,
 100                                  Double_t *mass) const;
 101
 102  protected:
 103
 104   AliAODVertex *fOwnPrimaryVtx; // primary vertex for this candidate
 105   TRef          fEventPrimaryVtx; // ref to primary vertex of the event
 106   TRef          fListOfCuts;  // ref to the list of analysis cuts
 107   Double_t     *fd0err;  //[fNProngs] error on prongs rphi impact param [cm]
 108   UShort_t     *fProngID;  //[fNProngs] track ID of daughters
 109
 110   ClassDef(AliAODRecoDecayHF,4)  // base class for AOD reconstructed heavy-flavour decays
 111 };
 112
 113 inline void AliAODRecoDecayHF::SetProngIDs(Int_t nIDs,UShort_t *id)
 114 {
 115   if(nIDs!=GetNProngs()) {
 116     printf("Wrong number of IDs, must be nProngs\n");
 117     return;
 118   }
 119   if(fProngID) delete [] fProngID;
 120   fProngID = new UShort_t[nIDs];
 121   for(Int_t i=0;i<nIDs;i++)
 122     fProngID[i] = id[i];
 123   return;
 124 }
 125
 126 inline Bool_t AliAODRecoDecayHF::IsLikeSign() const
 127 {
 128   // check if it is like-sign
 129
 130   Int_t ndg=GetNDaughters();
 131   if(!ndg) {
 132     printf("Daughters not available\n");
 133     return kFALSE;
 134   }
 135   Int_t chargeDg0 = ((AliAODTrack*)GetDaughter(0))->Charge();
 136
 137   for(Int_t i=1; i<ndg; i++) {
 138     if(chargeDg0!=((AliAODTrack*)GetDaughter(i))->Charge()) return kFALSE;
 139   }
 140
 141   return kTRUE;
 142 }
 143
 144 inline AliRDHFCuts *AliAODRecoDecayHF::GetCuts(const char* name) const
 145 {
 146   // returns the analysis cuts
 147
 148   TList *list = GetListOfCuts();
 149   if(!list) return 0;
 150
 151
 152   return (AliRDHFCuts*)list->FindObject(name);
 153 }
 154
 155 inline Bool_t AliAODRecoDecayHF::DaughterHasPointOnITSLayer(Int_t dg,Int_t l) const
 156 {
 157   // ITS clustermap for daughters
 158
 159   if(l<0 || l>5) {
 160     printf("ERROR: layer has to be in the range 0-5\n");
 161     return kFALSE;
 162   }
 163   AliAODTrack *t = (AliAODTrack*)GetDaughter(dg);
 164   if(!t) return kFALSE;
 165
 166   return TESTBIT(t->GetITSClusterMap(),l);
 167 }
 168
 169 #endif
 170