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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" | |
58 | class TBits; | |
59 | class AliESDtrack; | |
60 | class AliAODTrack; | |
61 | class AliVEvent; | |
62 | ||
63 | class 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 |