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73318471 1//
2// Class for handling of ESD track cuts.
3//
4// The class manages a number of track quality cuts, a
5// track-to-vertex cut and a number of kinematic cuts. Two methods
6// can be used to figure out if an ESD track survives the cuts:
7// AcceptTrack which takes a single AliESDtrack as argument and
524916f0 8// returns kTRUE/kFALSE or GetAcceptedTracks which takes an AliESDEvent
73318471 9// object and returns an TObjArray (of AliESDtracks) with the tracks
10// in the ESD that survived the cuts.
11//
12//
524916f0 13// TODO:
73318471 14// - add functionality to save and load cuts
73318471 15// - add histograms for kinematic cut variables?
16// - upper and lower cuts for all (non-boolean) cuts
17// - update print method
73318471 18// - put comments to each variable
19//
20
21#ifndef ALIESDTRACKCUTS_H
22#define ALIESDTRACKCUTS_H
23
24#include <TF1.h>
25#include <TH2.h>
26#include "AliAnalysisCuts.h"
27
73318471 28class AliESDEvent;
29class AliESDtrack;
30class AliLog;
31class TTree;
32
33class AliESDtrackCuts : public AliAnalysisCuts
34{
35public:
94c06b89 36 enum ITSClusterRequirement { kOff = 0, kNone, kAny, kFirst, kOnlyFirst, kSecond, kOnlySecond, kBoth };
37 enum Detector { kSPD = 0, kSDD, kSSD };
38
73318471 39 AliESDtrackCuts(const Char_t* name = "AliESDtrackCuts", const Char_t* title = "");
40 virtual ~AliESDtrackCuts();
36853ddd 41
73318471 42 Bool_t IsSelected(TObject* obj)
43 {return AcceptTrack((AliESDtrack*)obj);}
264ebaac 44 Bool_t IsSelected(TList* /*list*/) {return kTRUE;}
36853ddd 45
73318471 46 Bool_t AcceptTrack(AliESDtrack* esdTrack);
74687314 47 TObjArray* GetAcceptedTracks(AliESDEvent* esd, Bool_t bTPC = kFALSE);
73318471 48 Int_t CountAcceptedTracks(AliESDEvent* esd);
49
524916f0 50 static AliESDtrack* GetTPCOnlyTrack(AliESDEvent* esd, Int_t iTrack);
51
73318471 52 virtual Long64_t Merge(TCollection* list);
53 virtual void Copy(TObject &c) const;
54 AliESDtrackCuts(const AliESDtrackCuts& pd); // Copy Constructor
55 AliESDtrackCuts &operator=(const AliESDtrackCuts &c);
56
57 //######################################################
58 // track quality cut setters
59 void SetMinNClustersTPC(Int_t min=-1) {fCutMinNClusterTPC=min;}
60 void SetMinNClustersITS(Int_t min=-1) {fCutMinNClusterITS=min;}
94c06b89 61 void SetClusterRequirementITS(Detector det, ITSClusterRequirement req = kOff) { fCutClusterRequirementITS[det] = req; }
73318471 62 void SetMaxChi2PerClusterTPC(Float_t max=1e10) {fCutMaxChi2PerClusterTPC=max;}
63 void SetMaxChi2PerClusterITS(Float_t max=1e10) {fCutMaxChi2PerClusterITS=max;}
64 void SetRequireTPCRefit(Bool_t b=kFALSE) {fCutRequireTPCRefit=b;}
65 void SetRequireITSRefit(Bool_t b=kFALSE) {fCutRequireITSRefit=b;}
29387958 66 void SetAcceptKinkDaughters(Bool_t b=kTRUE) {fCutAcceptKinkDaughters=b;}
73318471 67 void SetMaxCovDiagonalElements(Float_t c1=1e10, Float_t c2=1e10, Float_t c3=1e10, Float_t c4=1e10, Float_t c5=1e10)
68 {fCutMaxC11=c1; fCutMaxC22=c2; fCutMaxC33=c3; fCutMaxC44=c4; fCutMaxC55=c5;}
69
70 // track to vertex cut setters
610e91ac 71 void SetMaxNsigmaToVertex(Float_t sigma=1e10) {fCutNsigmaToVertex = sigma; SetRequireSigmaToVertex(kTRUE);}
29387958 72 void SetRequireSigmaToVertex(Bool_t b=kTRUE) {fCutSigmaToVertexRequired = b;}
133a5e00 73 void SetMaxDCAToVertexXY(Float_t dist=1e10) {fCutMaxDCAToVertexXY = dist;}
74 void SetMaxDCAToVertexZ(Float_t dist=1e10) {fCutMaxDCAToVertexZ = dist;}
75 void SetMinDCAToVertexXY(Float_t dist=0.) {fCutMinDCAToVertexXY = dist;}
76 void SetMinDCAToVertexZ(Float_t dist=0.) {fCutMinDCAToVertexZ = dist;}
86f0e195 77 void SetDCAToVertex2D(Bool_t b=kFALSE) {fCutDCAToVertex2D = b;}
94c06b89 78
79 // deprecated, will be removed in next release
80 void SetMinNsigmaToVertex(Float_t sigma=1e10);
94c06b89 81 Float_t GetMinNsigmaToVertex() const;
58c4f3fb 82 void SetAcceptKingDaughters(Bool_t b=kFALSE);
83 Bool_t GetAcceptKingDaughters() const;
73318471 84
85 // getters
73318471 86
5ce43eaf 87 Int_t GetMinNClusterTPC() const { return fCutMinNClusterTPC;}
88 Int_t GetMinNClustersITS() const { return fCutMinNClusterITS;}
94c06b89 89 ITSClusterRequirement GetClusterRequirementITS(Detector det) const { return fCutClusterRequirementITS[det]; }
5ce43eaf 90 Float_t GetMaxChi2PerClusterTPC() const { return fCutMaxChi2PerClusterTPC;}
91 Float_t GetMaxChi2PerClusterITS() const { return fCutMaxChi2PerClusterITS;}
92 Bool_t GetRequireTPCRefit() const { return fCutRequireTPCRefit;}
93 Bool_t GetRequireITSRefit() const { return fCutRequireITSRefit;}
58c4f3fb 94 Bool_t GetAcceptKinkDaughters() const { return fCutAcceptKinkDaughters;}
5ce43eaf 95 void GetMaxCovDiagonalElements(Float_t& c1, Float_t& c2, Float_t& c3, Float_t& c4, Float_t& c5)
96 {c1 = fCutMaxC11; c2 = fCutMaxC22; c3 = fCutMaxC33; c4 = fCutMaxC44; c5 = fCutMaxC55;}
94c06b89 97 Float_t GetMaxNsigmaToVertex() const { return fCutNsigmaToVertex;}
133a5e00 98 Float_t GetMaxDCAToVertexXY() const { return fCutMaxDCAToVertexXY;}
99 Float_t GetMaxDCAToVertexZ() const { return fCutMaxDCAToVertexZ;}
100 Float_t GetMinDCAToVertexXY() const { return fCutMinDCAToVertexXY;}
101 Float_t GetMinDCAToVertexZ() const { return fCutMinDCAToVertexZ;}
86f0e195 102 Bool_t GetDCAToVertex2D() const { return fCutDCAToVertex2D;}
5ce43eaf 103 Bool_t GetRequireSigmaToVertex( ) const { return fCutSigmaToVertexRequired;}
5ac99092 104
105 void GetPRange(Float_t& r1, Float_t& r2) {r1=fPMin; r2=fPMax;}
106 void GetPtRange(Float_t& r1, Float_t& r2) {r1=fPtMin; r2=fPtMax;}
107 void GetPxRange(Float_t& r1, Float_t& r2) {r1=fPxMin; r2=fPxMax;}
108 void GetPyRange(Float_t& r1, Float_t& r2) {r1=fPyMin; r2=fPyMax;}
109 void GetPzRange(Float_t& r1, Float_t& r2) {r1=fPzMin; r2=fPzMax;}
110 void GetEtaRange(Float_t& r1, Float_t& r2) {r1=fEtaMin; r2=fEtaMax;}
111 void GetRapRange(Float_t& r1, Float_t& r2) {r1=fRapMin; r2=fRapMax;}
74687314 112
73318471 113 // track kinmatic cut setters
114 void SetPRange(Float_t r1=0, Float_t r2=1e10) {fPMin=r1; fPMax=r2;}
115 void SetPtRange(Float_t r1=0, Float_t r2=1e10) {fPtMin=r1; fPtMax=r2;}
116 void SetPxRange(Float_t r1=-1e10, Float_t r2=1e10) {fPxMin=r1; fPxMax=r2;}
117 void SetPyRange(Float_t r1=-1e10, Float_t r2=1e10) {fPyMin=r1; fPyMax=r2;}
118 void SetPzRange(Float_t r1=-1e10, Float_t r2=1e10) {fPzMin=r1; fPzMax=r2;}
119 void SetEtaRange(Float_t r1=-1e10, Float_t r2=1e10) {fEtaMin=r1; fEtaMax=r2;}
120 void SetRapRange(Float_t r1=-1e10, Float_t r2=1e10) {fRapMin=r1; fRapMax=r2;}
121
122 //######################################################
123 void SetHistogramsOn(Bool_t b=kFALSE) {fHistogramsOn = b;}
124 void DefineHistograms(Int_t color=1);
125 virtual Bool_t LoadHistograms(const Char_t* dir = 0);
126 void SaveHistograms(const Char_t* dir = 0);
127 void DrawHistograms();
128
57fddfbc 129 static Float_t GetSigmaToVertex(AliESDtrack* esdTrack);
73318471 130
131 static void EnableNeededBranches(TTree* tree);
132
133 // void SaveQualityCuts(Char_t* file)
134 // void LoadQualityCuts(Char_t* file)
135
136 TH1* GetDZNormalized(Int_t i) const { return fhDZNormalized[i]; }
137
138protected:
139 void Init(); // sets everything to 0
94c06b89 140 Bool_t CheckITSClusterRequirement(ITSClusterRequirement req, Bool_t clusterL1, Bool_t clusterL2);
141
133a5e00 142 enum { kNCuts = 30 };
73318471 143
144 //######################################################
145 // esd track quality cuts
146 static const Char_t* fgkCutNames[kNCuts]; //! names of cuts (for internal use)
147
148 Int_t fCutMinNClusterTPC; // min number of tpc clusters
149 Int_t fCutMinNClusterITS; // min number of its clusters
94c06b89 150
151 ITSClusterRequirement fCutClusterRequirementITS[3]; // detailed ITS cluster requirements for (SPD, SDD, SSD)
73318471 152
153 Float_t fCutMaxChi2PerClusterTPC; // max tpc fit chi2 per tpc cluster
154 Float_t fCutMaxChi2PerClusterITS; // max its fit chi2 per its cluster
155
156 Float_t fCutMaxC11; // max cov. matrix diag. elements (res. y^2)
157 Float_t fCutMaxC22; // max cov. matrix diag. elements (res. z^2)
158 Float_t fCutMaxC33; // max cov. matrix diag. elements (res. sin(phi)^2)
159 Float_t fCutMaxC44; // max cov. matrix diag. elements (res. tan(theta_dip)^2)
160 Float_t fCutMaxC55; // max cov. matrix diag. elements (res. 1/pt^2)
161
162 Bool_t fCutAcceptKinkDaughters; // accepting kink daughters?
163 Bool_t fCutRequireTPCRefit; // require TPC refit
164 Bool_t fCutRequireITSRefit; // require ITS refit
165
166 // track to vertex cut
167 Float_t fCutNsigmaToVertex; // max number of estimated sigma from track-to-vertex
168 Bool_t fCutSigmaToVertexRequired; // cut track if sigma from track-to-vertex could not be calculated
133a5e00 169 Float_t fCutMaxDCAToVertexXY; // track-to-vertex cut in max absolute distance in xy-plane
170 Float_t fCutMaxDCAToVertexZ; // track-to-vertex cut in max absolute distance in z-plane
171 Float_t fCutMinDCAToVertexXY; // track-to-vertex cut on min absolute distance in xy-plane
172 Float_t fCutMinDCAToVertexZ; // track-to-vertex cut on min absolute distance in z-plane
173 Bool_t fCutDCAToVertex2D; // if true a 2D DCA cut is made. Tracks are accepted if sqrt((DCAXY / fCutMaxDCAToVertexXY)^2 + (DCAZ / fCutMaxDCAToVertexZ)^2) < 1 AND sqrt((DCAXY / fCutMinDCAToVertexXY)^2 + (DCAZ / fCutMinDCAToVertexZ)^2) > 1
73318471 174
175 // esd kinematics cuts
176 Float_t fPMin, fPMax; // definition of the range of the P
177 Float_t fPtMin, fPtMax; // definition of the range of the Pt
178 Float_t fPxMin, fPxMax; // definition of the range of the Px
179 Float_t fPyMin, fPyMax; // definition of the range of the Py
180 Float_t fPzMin, fPzMax; // definition of the range of the Pz
181 Float_t fEtaMin, fEtaMax; // definition of the range of the eta
182 Float_t fRapMin, fRapMax; // definition of the range of the y
183
184 //######################################################
185 // diagnostics histograms
186 Bool_t fHistogramsOn; // histograms on/off
187
188 TH1F* fhNClustersITS[2]; //->
189 TH1F* fhNClustersTPC[2]; //->
190
191 TH1F* fhChi2PerClusterITS[2]; //->
192 TH1F* fhChi2PerClusterTPC[2]; //->
193
194 TH1F* fhC11[2]; //->
195 TH1F* fhC22[2]; //->
196 TH1F* fhC33[2]; //->
197 TH1F* fhC44[2]; //->
198 TH1F* fhC55[2]; //->
199
200 TH1F* fhDXY[2]; //->
201 TH1F* fhDZ[2]; //->
86f0e195 202 TH1F* fhDXYDZ[2]; //-> absolute distance sqrt(dxy**2 + dz**2) to vertex; if 2D cut is set, normalized to given values
73318471 203 TH2F* fhDXYvsDZ[2]; //->
204
205 TH1F* fhDXYNormalized[2]; //->
206 TH1F* fhDZNormalized[2]; //->
207 TH2F* fhDXYvsDZNormalized[2]; //->
208 TH1F* fhNSigmaToVertex[2]; //->
524916f0 209
73318471 210 TH1F* fhPt[2]; //-> pt of esd tracks
211 TH1F* fhEta[2]; //-> eta of esd tracks
212
213 TF1* ffDTheoretical; //-> theoretical distance to vertex normalized (2d gauss)
214
215 TH1F* fhCutStatistics; //-> statistics of what cuts the tracks did not survive
216 TH2F* fhCutCorrelation; //-> 2d statistics plot
217
133a5e00 218 ClassDef(AliESDtrackCuts, 5)
73318471 219};
220
221
222#endif