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[u/mrichter/AliRoot.git] / CORRFW / AliCFTrackIsPrimaryCuts.h
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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// The class AliCFTrackIsPrimaryCut is designed to select reconstructed tracks
17// with a small impact parameter and tracks which are (not) daughters of kink
18// decays and to provide corresponding QA histograms.
19// This class inherits from the Analysis' Framework abstract base class
20// AliAnalysisCuts and is a part of the Correction Framework.
21// This class acts on single, reconstructed tracks, it is applicable on
22// ESD and AOD data.
23// It mainly consists of a IsSelected function that returns a boolean.
24// This function checks whether the considered track passes a set of cuts:
25// - min. and max. distance to main vertex in transverse plane (xy)
26// - min. and max. longitudinal distance to main vertex (z)
27// - min. and max. distance to main vertex as ellpise in xy - z plane
28// - all above cuts on absolute values or in units of sigma (resolution)
29// - min. and max. distance to main vertex in units of sigma (resolution)
30// - max. transverse (xy) and longitudinal (z) impact parameter resolution
31// - require that the dca calculation doesn't fail
32// - accept or not accept daughter tracks of kink decays
33//
34// By default, the distance to 'vertex calculated from tracks' is used.
35// Optionally the SPD (tracklet based) or TPC (TPC only tracks based) vertex
36// can be used.
37// Note: the distance to the TPC-vertex is already stored in the ESD,
38// the distance to the SPD-vertex has to be re-calculated by propagating each
39// track while executing this cut.
40//
41// The cut values for these cuts are set with the corresponding set functions.
42// All cut classes provided by the correction framework are supposed to be
43// added in the Analysis Framwork's class AliAnalysisFilter and applied by
44// the filter via a loop.
45//
46// author: I. Kraus (Ingrid.Kraus@cern.ch)
47// idea taken form
48// AliESDtrackCuts writte by Jan Fiete Grosse-Oetringhaus and
49// AliRsnDaughterCut class written by A. Pulvirenti.
50
51#ifndef ALICFTRACKISPRIMARYCUTS_H
52#define ALICFTRACKISPRIMARYCUTS_H
53
54#include "AliCFCutBase.h"
55#include "AliAODTrack.h"
56#include <TH2.h>
57#include "AliESDtrackCuts.h"
58class TBits;
59class AliESDtrack;
60class AliAODTrack;
61class AliVEvent;
62
63class AliCFTrackIsPrimaryCuts : public AliCFCutBase
64{
65 public :
66 AliCFTrackIsPrimaryCuts() ;
67 AliCFTrackIsPrimaryCuts(Char_t* name, Char_t* title) ;
68 AliCFTrackIsPrimaryCuts(const AliCFTrackIsPrimaryCuts& c) ;
69 AliCFTrackIsPrimaryCuts& operator=(const AliCFTrackIsPrimaryCuts& c) ;
70 ~AliCFTrackIsPrimaryCuts();
71 void Copy(TObject &c) const;
72
73 Bool_t IsSelected(TObject* obj);
74 Bool_t IsSelected(TList* /*list*/) {return kTRUE;}
75
76 // cut value setter
77 void UseSPDvertex(Bool_t b=kFALSE);
78 void UseTPCvertex(Bool_t b=kFALSE);
79 void SetMinDCAToVertexXY(Float_t dist=0.) {fMinDCAToVertexXY = dist;}
80 void SetMinDCAToVertexZ(Float_t dist=0.) {fMinDCAToVertexZ = dist;}
81 void SetMaxDCAToVertexXY(Float_t dist=1e10) {fMaxDCAToVertexXY = dist;}
82 void SetMaxDCAToVertexZ(Float_t dist=1e10) {fMaxDCAToVertexZ = dist;}
83 void SetDCAToVertex2D(Bool_t b=kFALSE) {fDCAToVertex2D = b;}
84 void SetAbsDCAToVertex(Bool_t b=kTRUE) {fAbsDCAToVertex = b;}
85 void SetMinNSigmaToVertex(Double_t sigmaMin=0.) {fNSigmaToVertexMin = sigmaMin;}
86 void SetMaxNSigmaToVertex(Double_t sigmaMax=1.e+10) {fNSigmaToVertexMax = sigmaMax;}
87 void SetMaxSigmaDCAxy(Double_t sigmaMax=1.e+10) {fSigmaDCAxy = sigmaMax;}
88 void SetMaxSigmaDCAz(Double_t sigmaMax=1.e+10) {fSigmaDCAz = sigmaMax;}
89 void SetRequireSigmaToVertex(Bool_t b=kFALSE) {fRequireSigmaToVertex=b;}
90 void SetAcceptKinkDaughters(Bool_t b=kTRUE) {fAcceptKinkDaughters=b;}
91 void SetAODType(Char_t type=AliAODTrack::kUndef) {fAODType = type;}
92
93 // QA histograms
94 void DrawHistograms();
95 void SaveHistograms(const Char_t* dir = 0);
96 void AddQAHistograms(TList *qaList);
97 // QA histogram setter
98 // please use indices from the enumeration below
99 void SetHistogramBins(Int_t index, Int_t nbins, Double_t *bins);
100 void SetHistogramBins(Int_t index, Int_t nbins, Double_t xmin, Double_t xmax);
101 virtual void SetRecEventInfo(const TObject* esd);
102
103 // indeces/counters for single selections
104 enum {
105 kCutNSigmaToVertex=0, // tracks's distance to main vertex in units of sigma
106 kCutRequireSigmaToVertex, // calculation is successful
107 kCutAcceptKinkDaughters, // do (not) accept secondaries
108 kDcaXY, // controll histogram: dca in xy plane
109 kDcaZ, // controll histogram: dca along z axis
110 kDcaXYnorm, // controll histogram: normalised dca in xy plane
111 kDcaZnorm, // controll histogram: normalised dca along z axis
112 kSigmaDcaXY, // controll histogram: impact parameter resolution in transverse plane
113 kSigmaDcaZ, // controll histogram: impact parameter resolution along z axis
114 kCutAODType, // cut on AliAODTrack::fType
115 kNCuts=9, // number of single selections
116 kNStepQA=2, // number of QA steps (before/after the cuts)
117 kNHist=9 // number of QA histograms
118 };
119
120 private:
121 void SelectionBitMap(TObject* obj);
122 void GetDCA(AliESDtrack* esdTrack);
123 void GetDCA(AliAODTrack* aodTrack);
124 void DefineHistograms(); // books histograms and TList
125 void Initialise(); // sets everything to 0
126 void FillHistograms(TObject* obj, Bool_t b);
127 // Fills histograms before and after cuts
128 AliVEvent* fEvt; // pointer to event, needed for SPD vertex and DCA in AODs
129 Bool_t fUseSPDvertex; // flag: calculate dca to SPD-vertex, off by default
130 Bool_t fUseTPCvertex; // flag: calculate dca to TPC-vertex, off by default
131 Double_t fMinDCAToVertexXY; // cut value: min distance to main vertex in transverse plane
132 Double_t fMinDCAToVertexZ; // cut value: min longitudinal distance to main vertex
133 Double_t fMaxDCAToVertexXY; // cut value: max distance to main vertex in transverse plane
134 Double_t fMaxDCAToVertexZ; // cut value: max longitudinal distance to main vertex
135 Bool_t fDCAToVertex2D; // flag: cut on ellipse in xy - z plane
136 Bool_t fAbsDCAToVertex; // flag: cut on absolute values or in units of sigma
137 Double_t fNSigmaToVertexMin; // cut value: min distance to main vertex in units of sigma
138 Double_t fNSigmaToVertexMax; // cut value: max distance to main vertex in units of sigma
139 Double_t fSigmaDCAxy; // cut value: impact parameter resolution in xy plane
140 Double_t fSigmaDCAz; // cut value: impact parameter resolution in z direction
141 Double_t fDCA[6]; // impact parameters
142 Bool_t fRequireSigmaToVertex; // require calculable distance to main vertex
143 Char_t fAODType; // type of AOD track (undef, primary, secondary, orphan)
144 // applicable at AOD level only !
145
146 TH2F* fhDcaXYvsDcaZ[2]; // Histogram: dca xy vs. z
147 Bool_t fAcceptKinkDaughters; // accepting kink daughters
148
149 TH1F* fhCutStatistics; // Histogram: statistics of what cuts the tracks did not survive
150 TH2F* fhCutCorrelation; // Histogram: 2d statistics plot
151
152 TH1F* fhQA[kNHist][kNStepQA]; // QA Histograms
153 TBits *fBitmap ; // stores single selection decisions
154
155 // QA histogram setters
156 Int_t fhNBinsNSigma; // number of bins+1: dca in units of sigma
157 Int_t fhNBinsRequireSigma; // number of bins+1: require successful calcuation
158 Int_t fhNBinsAcceptKink; // number of bins+1: acceptkink daughters
159 Int_t fhNBinsDcaXY; // number of bins+1: dca in transverse plane
160 Int_t fhNBinsDcaZ; // number of bins+1: dca along beam axis
161 Int_t fhNBinsDcaXYnorm; // number of bins+1: normalised dca in transverse plane
162 Int_t fhNBinsDcaZnorm; // number of bins+1: normalised dca along beam axis
163 Int_t fhNBinsSigmaDcaXY; // number of bins+1: impact parameter resolution in transverse plane
164 Int_t fhNBinsSigmaDcaZ; // number of bins+1: impact parameter resolution along beam axis
165
166 Double_t *fhBinLimNSigma; //[fhNBinsNSigma] bin limits: dca in units of sigma
167 Double_t *fhBinLimRequireSigma;//[fhNBinsRequireSigma] bin limits: require successful calcuation
168 Double_t *fhBinLimAcceptKink;//[fhNBinsAcceptKink] bin limits: acceptkink daughters
169 Double_t *fhBinLimDcaXY;//[fhNBinsDcaXY] bin limits: dca in transverse plane
170 Double_t *fhBinLimDcaZ; //[fhNBinsDcaZ] bin limits: dca along beam axis
171 Double_t *fhBinLimDcaXYnorm; //[fhNBinsDcaXYnorm] bin limits: normalised dca in transverse plane
172 Double_t *fhBinLimDcaZnorm;//[fhNBinsDcaZnorm] bin limits: normalised dca along beam axis
173 Double_t *fhBinLimSigmaDcaXY; //[fhNBinsSigmaDcaXY] bin limits: impact parameter in transverse plane
174 Double_t *fhBinLimSigmaDcaZ; //[fhNBinsSigmaDcaZ] bin limits: impact parameter along beam axis
175
176 ClassDef(AliCFTrackIsPrimaryCuts,3);
177};
178
179#endif