PWGHF/vertexingHF/AliAODRecoDecayHF4Prong.h

   1 #ifndef ALIAODRECODECAYHF4PRONG_H
   2 #define ALIAODRECODECAYHF4PRONG_H
   3 /* Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. *
   4  * See cxx source for full Copyright notice                               */
   5
   6 /* $Id$ */
   7
   8 //***********************************************************
   9 // Class AliAODRecoDecayHF4Prong
  10 // base class for AOD reconstructed 4-prong heavy-flavour decays
  11 // (D0->Kpipipi, etc...)
  12 // Authors: G.E.Bruno Giuseppe.Bruno@ba.infn.it, R.Romita Rossella.Romita@ba.infn.it
  13 //***********************************************************
  14
  15 #include "AliAODRecoDecay.h"
  16 #include "AliAODRecoDecayHF.h"
  17
  18 class AliAODRecoDecayHF4Prong : public AliAODRecoDecayHF {
  19
  20  public:
  21
  22   AliAODRecoDecayHF4Prong();
  23   AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
  24                            Double_t *px,Double_t *py,Double_t *pz,
  25                            Double_t *d0,Double_t *d0err,
  26                            Double_t *dca, //Double_t sigvert,
  27                            Double_t dist12,Double_t dist3,
  28                            Double_t dist4,
  29                            Short_t charge);
  30    AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
  31                            Double_t *d0,Double_t *d0err,
  32                            Double_t *dca, //Double_t sigvert,
  33                            Double_t dist12,Double_t dist3,
  34                            Double_t dist4,
  35                            Short_t charge);
  36
  37   AliAODRecoDecayHF4Prong(const AliAODRecoDecayHF4Prong& source);
  38   AliAODRecoDecayHF4Prong& operator=(const AliAODRecoDecayHF4Prong& source);
  39
  40   virtual ~AliAODRecoDecayHF4Prong() {}
  41
  42   void GetDCAs(Double_t dca[6]) const
  43     {for(Int_t i=0;i<6;i++) dca[i]=GetDCA(i);}
  44   // convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p0p3,fDCA[3]=p1p2...
  45   Double_t GetDist12toPrim() const {return fDist12toPrim;}
  46   Double_t GetDist3toPrim() const {return fDist3toPrim;}
  47   Double_t GetDist4toPrim() const {return fDist4toPrim;}
  48
  49   // D0->pi+K- pipi and D0bar->K+pi- pipi (in the order given)
  50   Double_t ED0() const {return E(421);}
  51   Double_t YD0() const {return Y(421);}
  52   Double_t CtD0() const {return Ct(421);}
  53   Double_t CtD0(Double_t point[3]) const {return AliAODRecoDecay::Ct(421,point);}
  54   Double_t CtD0(AliAODVertex *vtx1) const {return AliAODRecoDecay::Ct(421,vtx1);}
  55   Double_t InvMassRho(Int_t i,Int_t j) const {return InvMass2Prongs(i,j,211,211);}
  56   Bool_t CutRhoMass(Double_t massD0[2],Double_t massD0bar[2],Double_t CutMass,Double_t CutRho) const;
  57
  58   void InvMassD0(Double_t mD0[2]) const;
  59   void InvMassD0bar(Double_t mD0bar[2]) const;
  60
  61   Bool_t   SelectD0(const Double_t* cuts,Int_t &okD0,Int_t &okD0bar) const;
  62
  63  private:
  64
  65   //Double_t fSigmaVert; // track dispersion around the secondary vertex
  66   Double_t fDist12toPrim; //distance prim vert - 2 opposite sign track vertex
  67   Double_t fDist3toPrim; //distance prim vert - 3 track vertex
  68   Double_t fDist4toPrim; //distance prim vert - 4 track vertex
  69   //Double_t fDist123toPrim;  //distance
  70
  71
  72   ClassDef(AliAODRecoDecayHF4Prong,2)  // base class for AOD reconstructed
  73                                        // heavy-flavour 3-prong decays
  74 };
  75
  76 #endif