PWGHF/hfe/AliHFEpriVtx.h

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
   9  * without fee, provided that the above copyright notice appears in all   *
  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15 //
  16 // QA class of primary vertex study for Heavy Flavor electrons
  17 // this has functionality to reject electrons from primary vertex
  18 // and check primary vertex characteristics
  19 //
  20
  21 #ifndef ALIHFEPRIVTX_H
  22 #define ALIHFEPRIVTX_H
  23
  24 #ifndef ROOT_TObject
  25 //#include <TObject.h>
  26 #endif
  27
  28 class TH1F;
  29 class TH1I;
  30 class TH2F;
  31 class TString;
  32 class AliESDEvent;
  33 class AliESDtrack;
  34 class AliMCEvent;
  35 class AliKFParticle;
  36
  37 //________________________________________________________________
  38 class AliHFEpriVtx : public TObject {
  39
  40         public:
  41                 AliHFEpriVtx();
  42                 AliHFEpriVtx(const AliHFEpriVtx &p); // copy constructor
  43                 AliHFEpriVtx &operator=(const AliHFEpriVtx &); // assignment operator
  44                 virtual ~AliHFEpriVtx();
  45
  46                 void CreateHistograms(TString hnopt=""); // create histograms
  47                 void Init();
  48                 void SetEvent(AliESDEvent * const ESD){fESD1=ESD;}; // set ESD pointer
  49                 void SetMCEvent(AliMCEvent * const mcEvent){fMCEvent=mcEvent;} // set stack pointer
  50                 void CountNtracks(Int_t sourcePart, Int_t recpid, Double_t recprob); // count number of tracks passed certain cut
  51                 void FillNtracks(); // fill counted number of tracks
  52                 void CountPriVxtElecContributor(AliESDtrack *ESDelectron, Int_t sourcePart, Int_t recpid, Double_t recprob);
  53                 void FillNprimVtxContributor() const;
  54                 void RecalcPrimvtx(Int_t nkftrk, const Int_t * const, const AliKFParticle * const); //recalculate primary vertex after removing given tracks
  55                 void RecalcPrimvtx(const AliESDtrack * const ESDelectron); //recalculate primary vertex after removing given track
  56                 void GetRecalcPrimvtx(Double_t privtx[3]) const {
  57                     privtx[0]=fPVxRe; privtx[1]=fPVyRe; privtx[2]=fPVzRe;
  58                 }
  59                 void GetNPriVxtContributor();
  60                 Double_t GetDistanceFromRecalVertexXY(const AliESDtrack * const ESDelectron);
  61                             Int_t GetNsectrk2prim() const {return fNsectrk2prim;};
  62                 Int_t GetMCPID(AliESDtrack const *track); // return mc pid
  63
  64
  65         private:
  66
  67                 AliESDEvent* fESD1; // ESD event
  68                 AliMCEvent* fMCEvent; // MC Event
  69
  70                 TString fkSourceLabel[10]; // storing source label
  71
  72                 enum kSources {kAll, kDirectCharm, kDirectBeauty, kBeautyCharm, kGamma, kPi0, kElse, kBeautyGamma, kBeautyPi0, kBeautyElse};
  73
  74                 struct AliHists{
  75                         TH1F *fNtracks; // histogram to fill number of counted tracks for different sources
  76                         TH1F *fNprimVtxContributor; // histogram to fill number of tracks contributing primary vertex
  77                         TH1F *fPtElec; // histogram to fill pt of electron tracks
  78                         TH1F *fPtElecContributor; // histogram to fill pt of electron tracks contributing primary vertex
  79                         Int_t fNtrackCount; // number of counted track
  80                         Int_t fNprimVtxContributorCount; // number of tracks contributing primary vertex
  81
  82                         AliHists()
  83                         : fNtracks()
  84                         , fNprimVtxContributor()
  85                         , fPtElec()
  86                         , fPtElecContributor()
  87                         , fNtrackCount(0)
  88                         , fNprimVtxContributorCount(0)
  89                         {
  90                           // default constructor
  91                         }
  92
  93                         AliHists(const AliHists & p)
  94                         : fNtracks(p.fNtracks)
  95                         , fNprimVtxContributor(p.fNprimVtxContributor)
  96                         , fPtElec(p.fPtElec)
  97                         , fPtElecContributor(p.fPtElecContributor)
  98                         , fNtrackCount(p.fNtrackCount)
  99                         , fNprimVtxContributorCount(p.fNprimVtxContributorCount)
 100                         {
 101                           // copy constructor
 102                         }
 103                         AliHists &operator=(const AliHists &)
 104                         {
 105                           // assignment operator, not yet implemented
 106                           return *this;
 107                         }
 108                 };
 109                 AliHists fPrimVtx[10]; // define structure of histograms
 110
 111                 Int_t fNtrackswoPid; //  number of track counted
 112                 TH1F *fHNtrackswoPid; // histogram to fill number of track counted
 113                 TH1I *fNESDprimVtxContributor; // histogram to fill number of primary vertex contributor for given event
 114                 TH1I *fNESDprimVtxIndices; // histogram to fill number of primary vertex indices for given event
 115                 TH2F *fDiffDCAvsPt; // histogram to fill DCA difference as a function of pT
 116                 TH2F *fDiffDCAvsNt; // histogram to fill DCA difference as a function of pT
 117
 118                 Int_t fNsectrk2prim; // # of secvtx tracks contributing to primvtx calculation
 119                 Double_t fPVxRe;     // recalculated primary vertex x
 120                 Double_t fPVyRe;     // recalculated primary vertex y
 121                 Double_t fPVzRe;     // recalculated primary vertex z
 122
 123         ClassDef(AliHFEpriVtx,0);
 124 };
 125
 126 #endif