OADB/AliAnalysisUtils.h

   1 #ifndef ALIANALYSISUTILS_H
   2 #define ALIANALYSISUTILS_H
   3
   4 ////////////////////////////////////////////////////////////////////
   5 //                                                                           //
   6 // Class with functions useful for different analyses                      //
   7 // - vertex selection                                                       //
   8 //    * 2013 pA default cuts                                             //
   9 // - identification of the fist event of the chunk                         //
  10 // - identification pileup events                                           //
  11 //                                                                          //
  12 ///////////////////////////////////////////////////////////////////
  13
  14 #include "TObject.h"
  15
  16 class AliVEvent;
  17 class AliVVertex;
  18 class AliPPVsMultUtils;
  19
  20 class AliAnalysisUtils : public TObject {
  21
  22  public:
  23
  24   AliAnalysisUtils();
  25   virtual ~AliAnalysisUtils(){};
  26
  27   Bool_t IsVertexSelected2013pA(AliVEvent *event);
  28   Bool_t IsFirstEventInChunk(AliVEvent *event);
  29
  30   Bool_t IsPileUpEvent(AliVEvent *event); //to be used in the analysis
  31   Bool_t IsPileUpMV(AliVEvent *event); //MV pileup selection implemented here
  32   Bool_t IsPileUpSPD(AliVEvent *event); //this calls IsPileUpFromSPD
  33   Bool_t IsOutOfBunchPileUp(AliVEvent *event); //out-of-bunch pileup rejection using trigger information
  34   Bool_t IsSPDClusterVsTrackletBG(AliVEvent *event); // background rejection with cluster-vs-tracklet cut
  35
  36   Double_t GetWDist(const AliVVertex* v0, const AliVVertex* v1);
  37
  38   void SetMinVtxContr(Int_t contr=1) {fMinVtxContr=contr;}
  39   void SetMaxVtxZ(Float_t z=1e6) {fMaxVtxZ=z;}
  40   void SetCutOnZVertexSPD(Bool_t iscut=true) { fCutOnZVertexSPD = iscut; }
  41
  42   //general pileup selection settings
  43   void SetUseMVPlpSelection(Bool_t useMVPlpSelection) { fUseMVPlpSelection = useMVPlpSelection;}
  44   void SetUseOutOfBunchPileUp(Bool_t useOutOfBunchPileUp) { fUseOutOfBunchPileUp = useOutOfBunchPileUp;}
  45
  46   //Multi Vertex pileup selection
  47   void SetMinPlpContribMV(Int_t minPlpContribMV) { fMinPlpContribMV = minPlpContribMV;}
  48   void SetMaxPlpChi2MV(Float_t maxPlpChi2MV) { fMaxPlpChi2MV = maxPlpChi2MV;}
  49   void SetMinWDistMV(Float_t minWDistMV) { fMinWDistMV = minWDistMV;}
  50   void SetCheckPlpFromDifferentBCMV(Bool_t checkPlpFromDifferentBCMV) { fCheckPlpFromDifferentBCMV = checkPlpFromDifferentBCMV;}
  51   //SPD Pileup slection
  52   void SetMinPlpContribSPD(Int_t minPlpContribSPD) { fMinPlpContribSPD = minPlpContribSPD;}
  53   void SetMinPlpZdistSPD(Float_t minPlpZdistSPD) { fMinPlpZdistSPD = minPlpZdistSPD;}
  54   void SetnSigmaPlpZdistSPD(Float_t nSigmaPlpZdistSPD) { fnSigmaPlpZdistSPD = nSigmaPlpZdistSPD;}
  55   void SetnSigmaPlpDiamXYSPD(Float_t nSigmaPlpDiamXYSPD) { fnSigmaPlpDiamXYSPD = nSigmaPlpDiamXYSPD;}
  56   void SetnSigmaPlpDiamZSPD(Float_t nSigmaPlpDiamZSPD) { fnSigmaPlpDiamZSPD = nSigmaPlpDiamZSPD;}
  57   void SetUseSPDCutInMultBins(Bool_t useSPDCutInMultBins) { fUseSPDCutInMultBins = useSPDCutInMultBins;}
  58
  59   // SPD cluster-vs-tracklet cut
  60   void SetASPDCvsTCut(Float_t a) { fASPDCvsTCut = a; }
  61   void SetBSPDCvsTCut(Float_t b) { fBSPDCvsTCut = b; }
  62
  63   //multiplicity selection in pp
  64   Float_t GetMultiplicityPercentile(AliVEvent *event, TString lMethod = "V0M");
  65
  66  private:
  67
  68   Bool_t fisAOD; // flag for AOD:1 or ESD:0
  69
  70   Int_t fMinVtxContr; // minimum vertex contributors
  71   Float_t fMaxVtxZ;   // maximum |z| of primary vertex
  72
  73   Bool_t fCutOnZVertexSPD; // 0: no cut, 1: |zvtx-SPD - zvtx-TPC|<0.5cm
  74
  75   Bool_t  fUseMVPlpSelection; //switch between SPD and MV pileup
  76   Bool_t  fUseOutOfBunchPileUp; //BC information from the trigger is used to tag out-of-bunch pileup
  77
  78   Int_t    fMinPlpContribMV; //minimum contributors to the pilup vertices, multi-vertex
  79   Float_t  fMaxPlpChi2MV; //minimum value of Chi2perNDF of the pileup vertex, multi-vertex
  80   Float_t  fMinWDistMV; //minimum of the sqrt of weighted distance between the primary and the pilup vertex, multi-vertex
  81   Bool_t  fCheckPlpFromDifferentBCMV; //pileup from different BC (Bunch Crossings)
  82
  83   Int_t    fMinPlpContribSPD; //minimum contributors to the pilup vertices, SPD
  84   Float_t  fMinPlpZdistSPD;  //minimum distance for the SPD pileup vertex
  85   Float_t  fnSigmaPlpZdistSPD;  //cut on Z for SPD pileup
  86   Float_t  fnSigmaPlpDiamXYSPD;  //cut on nsigma diamond XY for SPD pileup
  87   Float_t  fnSigmaPlpDiamZSPD;  //cut on nsigma diamond Z for SPD pileup
  88   Bool_t  fUseSPDCutInMultBins;  //use IsPileupFromSPDInMultBins instead of IsPileupFromSPD
  89
  90   Float_t fASPDCvsTCut; // constant for the linear cut in SPD clusters vs tracklets
  91   Float_t fBSPDCvsTCut; // slope for the linear cut in SPD  clusters vs tracklets
  92
  93   AliPPVsMultUtils *fPPVsMultUtils; //! multiplicity selection in pp
  94
  95   AliAnalysisUtils(const AliAnalysisUtils& obj); // copy constructor
  96   AliAnalysisUtils& operator=(const AliAnalysisUtils& other); // assignment
  97
  98   ClassDef(AliAnalysisUtils,3) // base helper class
  99 };
 100 #endif
 101