2 // Class for handling of ESD track cuts.
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
8 // returns kTRUE/kFALSE or GetAcceptedTracks which takes an AliESDEvent
9 // object and returns an TObjArray (of AliESDtracks) with the tracks
10 // in the ESD that survived the cuts.
14 // - add functionality to save and load cuts
15 // - add histograms for kinematic cut variables?
16 // - upper and lower cuts for all (non-boolean) cuts
17 // - update print method
18 // - put comments to each variable
21 #ifndef ALIESDTRACKCUTS_H
22 #define ALIESDTRACKCUTS_H
26 #include "AliAnalysisCuts.h"
39 class AliESDtrackCuts : public AliAnalysisCuts
42 enum ITSClusterRequirement { kOff = 0, kNone, kAny, kFirst, kOnlyFirst, kSecond, kOnlySecond, kBoth };
43 enum Detector { kSPD = 0, kSDD, kSSD };
44 enum MultEstTrackCuts { kMultEstTrackCutGlobal = 0, kMultEstTrackCutITSSA, kMultEstTrackCutDCAwSPD, kMultEstTrackCutDCAwoSPD, kNMultEstTrackCuts /* this must always be the last */};
45 enum MultEstTrackType { kTrackletsITSTPC = 0, kTrackletsITSSA, kTracklets };
46 enum VertexType { kVertexTracks = 0x1, kVertexSPD = 0x2, kVertexTPC = 0x4 };
48 AliESDtrackCuts(const Char_t* name = "AliESDtrackCuts", const Char_t* title = "");
49 virtual ~AliESDtrackCuts();
51 virtual Bool_t IsSelected(TObject* obj)
52 {return AcceptTrack((AliESDtrack*)obj);}
53 virtual Bool_t IsSelected(TList* /*list*/) {return kTRUE;}
55 Bool_t AcceptTrack(const AliESDtrack* esdTrack, const AliESDEvent* esdEvent = 0);
56 TObjArray* GetAcceptedTracks(const AliESDEvent* esd, Bool_t bTPC = kFALSE);
57 Int_t CountAcceptedTracks(const AliESDEvent* const esd);
59 static Int_t GetReferenceMultiplicity(const AliESDEvent* esd, Bool_t tpcOnly);
60 static Int_t GetReferenceMultiplicity(const AliESDEvent* esd, MultEstTrackType trackType = kTrackletsITSTPC, Float_t etaRange = 0.5);
61 static AliESDtrackCuts* GetMultEstTrackCuts(MultEstTrackCuts cut);
63 static AliESDtrack* GetTPCOnlyTrack(const AliESDEvent* esd, Int_t iTrack);
65 // Standard cut definitions
66 static AliESDtrackCuts* GetStandardTPCOnlyTrackCuts();
67 static AliESDtrackCuts* GetStandardITSTPCTrackCuts2009(Bool_t selPrimaries=kTRUE);
68 static AliESDtrackCuts* GetStandardITSTPCTrackCuts2010(Bool_t selPrimaries=kTRUE, Int_t clusterCut=0);
69 static AliESDtrackCuts* GetStandardITSSATrackCuts2009(Bool_t selPrimaries=kTRUE, Bool_t useForPid=kTRUE);
70 static AliESDtrackCuts* GetStandardITSSATrackCuts2010(Bool_t selPrimaries=kTRUE, Bool_t useForPid=kTRUE);
71 static AliESDtrackCuts* GetStandardITSSATrackCutsPbPb2010(Bool_t selPrimaries=kTRUE, Bool_t useForPid=kTRUE);
72 static AliESDtrackCuts* GetStandardITSPureSATrackCuts2009(Bool_t selPrimaries=kTRUE, Bool_t useForPid=kTRUE);
73 static AliESDtrackCuts* GetStandardITSPureSATrackCuts2010(Bool_t selPrimaries=kTRUE, Bool_t useForPid=kTRUE);
74 // Standard cuts for daughter tracks
75 static AliESDtrackCuts* GetStandardV0DaughterCuts();
77 virtual Long64_t Merge(TCollection* list);
78 virtual void Copy(TObject &c) const;
79 AliESDtrackCuts(const AliESDtrackCuts& pd); // Copy Constructor
80 AliESDtrackCuts &operator=(const AliESDtrackCuts &c);
82 //######################################################
83 // track quality cut setters
84 void SetMinNClustersTPC(Int_t min=-1) {fCutMinNClusterTPC=min;}
85 void SetMinNClustersITS(Int_t min=-1) {fCutMinNClusterITS=min;}
86 void SetMinNCrossedRowsTPC(Float_t min=-1) { fCutMinNCrossedRowsTPC=min;}
87 void SetMinRatioCrossedRowsOverFindableClustersTPC(Float_t min = -1) { fCutMinRatioCrossedRowsOverFindableClustersTPC=min;}
88 void SetClusterRequirementITS(Detector det, ITSClusterRequirement req = kOff) { fCutClusterRequirementITS[det] = req; }
89 void SetMaxChi2PerClusterTPC(Float_t max=1e10) {fCutMaxChi2PerClusterTPC=max;}
90 void SetMaxChi2PerClusterITS(Float_t max=1e10) {fCutMaxChi2PerClusterITS=max;}
91 void SetMaxChi2TPCConstrainedGlobal(Float_t max=1e10) {fCutMaxChi2TPCConstrainedVsGlobal = max; }
92 void SetMaxChi2TPCConstrainedGlobalVertexType(Int_t vertexType = kVertexTracks | kVertexSPD) { fCutMaxChi2TPCConstrainedVsGlobalVertexType = vertexType; }
93 void SetMaxNOfMissingITSPoints(Int_t max=6) {fCutMaxMissingITSPoints=max;}
94 void SetRequireTPCRefit(Bool_t b=kFALSE) {fCutRequireTPCRefit=b;}
95 void SetRequireTPCStandAlone(Bool_t b=kFALSE) {fCutRequireTPCStandAlone=b;}
96 void SetRequireITSRefit(Bool_t b=kFALSE) {fCutRequireITSRefit=b;}
97 void SetRequireITSPid(Bool_t b=kFALSE) {fCutRequireITSPid=b;}
98 void SetRequireITSStandAlone(Bool_t b=kFALSE) {fCutRequireITSStandAlone = b;}
99 void SetRequireITSPureStandAlone(Bool_t b=kFALSE){fCutRequireITSpureSA = b;}
102 void SetAcceptKinkDaughters(Bool_t b=kTRUE) {fCutAcceptKinkDaughters=b;}
103 void SetAcceptSharedTPCClusters(Bool_t b=kTRUE){fCutAcceptSharedTPCClusters=b;}
104 void SetMaxFractionSharedTPCClusters(Float_t max=1e10) {fCutMaxFractionSharedTPCClusters=max;}
105 void SetMaxCovDiagonalElements(Float_t c1=1e10, Float_t c2=1e10, Float_t c3=1e10, Float_t c4=1e10, Float_t c5=1e10)
106 {fCutMaxC11=c1; fCutMaxC22=c2; fCutMaxC33=c3; fCutMaxC44=c4; fCutMaxC55=c5;}
107 void SetMaxRel1PtUncertainty(Float_t max=1e10) {fCutMaxRel1PtUncertainty=max;}
110 // track to vertex cut setters
111 void SetMaxNsigmaToVertex(Float_t sigma=1e10) {fCutNsigmaToVertex = sigma; SetRequireSigmaToVertex(kTRUE);}
112 void SetRequireSigmaToVertex(Bool_t b=kTRUE) {fCutSigmaToVertexRequired = b;}
113 void SetMaxDCAToVertexXY(Float_t dist=1e10) {fCutMaxDCAToVertexXY = dist;}
114 void SetMaxDCAToVertexZ(Float_t dist=1e10) {fCutMaxDCAToVertexZ = dist;}
115 void SetMinDCAToVertexXY(Float_t dist=0.) {fCutMinDCAToVertexXY = dist;}
116 void SetMinDCAToVertexZ(Float_t dist=0.) {fCutMinDCAToVertexZ = dist;}
117 void SetMaxDCAToVertexXYPtDep(const char *dist="");
118 void SetMaxDCAToVertexZPtDep(const char *dist="");
119 void SetMinDCAToVertexXYPtDep(const char *dist="");
120 void SetMinDCAToVertexZPtDep(const char *dist="");
121 void SetDCAToVertex2D(Bool_t b=kFALSE) {fCutDCAToVertex2D = b;}
126 Int_t GetMinNClusterTPC() const { return fCutMinNClusterTPC;}
127 Int_t GetMinNClustersITS() const { return fCutMinNClusterITS;}
128 ITSClusterRequirement GetClusterRequirementITS(Detector det) const { return fCutClusterRequirementITS[det]; }
129 Float_t GetMaxChi2PerClusterTPC() const { return fCutMaxChi2PerClusterTPC;}
130 Float_t GetMaxChi2PerClusterITS() const { return fCutMaxChi2PerClusterITS;}
131 Float_t GetMaxChi2TPCConstrainedGlobal() const { return fCutMaxChi2TPCConstrainedVsGlobal; }
132 Int_t GetMaxChi2TPCConstrainedGlobalVertexType() const { return fCutMaxChi2TPCConstrainedVsGlobalVertexType; }
133 Int_t GetMaxNOfMissingITSPoints() const { return fCutMaxMissingITSPoints;}
134 Bool_t GetRequireTPCRefit() const { return fCutRequireTPCRefit;}
135 Bool_t GetRequireTPCStandAlone() const { return fCutRequireTPCStandAlone;}
136 Bool_t GetRequireITSRefit() const { return fCutRequireITSRefit;}
137 Bool_t GetRequireITSStandAlone() const { return fCutRequireITSStandAlone; }
138 Bool_t GetAcceptKinkDaughters() const { return fCutAcceptKinkDaughters;}
139 Bool_t GetAcceptSharedTPCClusters() const {return fCutAcceptSharedTPCClusters;}
140 Float_t GetMaxFractionSharedTPCClusters() const {return fCutMaxFractionSharedTPCClusters;}
141 void GetMaxCovDiagonalElements(Float_t& c1, Float_t& c2, Float_t& c3, Float_t& c4, Float_t& c5) const
142 {c1 = fCutMaxC11; c2 = fCutMaxC22; c3 = fCutMaxC33; c4 = fCutMaxC44; c5 = fCutMaxC55;}
143 Float_t GetMaxRel1PtUncertainty() const { return fCutMaxRel1PtUncertainty;}
144 Float_t GetMaxNsigmaToVertex() const { return fCutNsigmaToVertex;}
145 Float_t GetMaxDCAToVertexXY() const { return fCutMaxDCAToVertexXY;}
146 Float_t GetMaxDCAToVertexZ() const { return fCutMaxDCAToVertexZ;}
147 Float_t GetMinDCAToVertexXY() const { return fCutMinDCAToVertexXY;}
148 Float_t GetMinDCAToVertexZ() const { return fCutMinDCAToVertexZ;}
149 const char* GetMaxDCAToVertexXYPtDep() const { return fCutMaxDCAToVertexXYPtDep;}
150 const char* GetMaxDCAToVertexZPtDep() const { return fCutMaxDCAToVertexZPtDep;}
151 const char* GetMinDCAToVertexXYPtDep() const { return fCutMinDCAToVertexXYPtDep;}
152 const char* GetMinDCAToVertexZPtDep() const { return fCutMinDCAToVertexZPtDep;}
153 Bool_t GetDCAToVertex2D() const { return fCutDCAToVertex2D;}
154 Bool_t GetRequireSigmaToVertex( ) const { return fCutSigmaToVertexRequired;}
156 void GetPRange(Float_t& r1, Float_t& r2) const {r1=fPMin; r2=fPMax;}
157 void GetPtRange(Float_t& r1, Float_t& r2) const {r1=fPtMin; r2=fPtMax;}
158 void GetPxRange(Float_t& r1, Float_t& r2) const {r1=fPxMin; r2=fPxMax;}
159 void GetPyRange(Float_t& r1, Float_t& r2) const {r1=fPyMin; r2=fPyMax;}
160 void GetPzRange(Float_t& r1, Float_t& r2) const {r1=fPzMin; r2=fPzMax;}
161 void GetEtaRange(Float_t& r1, Float_t& r2) const {r1=fEtaMin; r2=fEtaMax;}
162 void GetRapRange(Float_t& r1, Float_t& r2) const {r1=fRapMin; r2=fRapMax;}
164 // track kinmatic cut setters
165 void SetPRange(Float_t r1=0, Float_t r2=1e10) {fPMin=r1; fPMax=r2;}
166 void SetPtRange(Float_t r1=0, Float_t r2=1e10) {fPtMin=r1; fPtMax=r2;}
167 void SetPxRange(Float_t r1=-1e10, Float_t r2=1e10) {fPxMin=r1; fPxMax=r2;}
168 void SetPyRange(Float_t r1=-1e10, Float_t r2=1e10) {fPyMin=r1; fPyMax=r2;}
169 void SetPzRange(Float_t r1=-1e10, Float_t r2=1e10) {fPzMin=r1; fPzMax=r2;}
170 void SetEtaRange(Float_t r1=-1e10, Float_t r2=1e10) {fEtaMin=r1; fEtaMax=r2;}
171 void SetRapRange(Float_t r1=-1e10, Float_t r2=1e10) {fRapMin=r1; fRapMax=r2;}
173 //######################################################
174 void SetHistogramsOn(Bool_t b=kFALSE) {fHistogramsOn = b;}
175 void DefineHistograms(Int_t color=1);
176 virtual Bool_t LoadHistograms(const Char_t* dir = 0);
177 void SaveHistograms(const Char_t* dir = 0);
178 void DrawHistograms();
180 static Float_t GetSigmaToVertex(const AliESDtrack* const esdTrack);
182 static void EnableNeededBranches(TTree* tree);
184 // void SaveQualityCuts(Char_t* file)
185 // void LoadQualityCuts(Char_t* file)
187 TH1F* GetDZNormalized(Int_t i) const { return fhDZNormalized[i]; }
188 TH1F* GetNClustersTPC(Int_t i) const { return fhNClustersTPC[i]; }
189 TH1F* GetPtHist(Int_t i) const { return fhPt[i]; }
192 void Init(); // sets everything to 0
193 Bool_t CheckITSClusterRequirement(ITSClusterRequirement req, Bool_t clusterL1, Bool_t clusterL2);
194 Bool_t CheckPtDepDCA(TString dist,Bool_t print=kFALSE) const;
195 void SetPtDepDCACuts(Double_t pt);
197 enum { kNCuts = 40 };
199 //######################################################
200 // esd track quality cuts
201 static const Char_t* fgkCutNames[kNCuts]; //! names of cuts (for internal use)
202 static AliESDtrackCuts* fgMultEstTrackCuts[kNMultEstTrackCuts]; //! track cuts used for the multiplicity estimate
204 Int_t fCutMinNClusterTPC; // min number of tpc clusters
205 Int_t fCutMinNClusterITS; // min number of its clusters
206 Float_t fCutMinNCrossedRowsTPC; // min number of tpc crossed rows
207 Float_t fCutMinRatioCrossedRowsOverFindableClustersTPC; // min ratio crossed rows / findable clusters
209 ITSClusterRequirement fCutClusterRequirementITS[3]; // detailed ITS cluster requirements for (SPD, SDD, SSD)
211 Float_t fCutMaxChi2PerClusterTPC; // max tpc fit chi2 per tpc cluster
212 Float_t fCutMaxChi2PerClusterITS; // max its fit chi2 per its cluster
213 Float_t fCutMaxChi2TPCConstrainedVsGlobal; // max chi2 TPC track constrained with vtx vs. global track
214 Int_t fCutMaxChi2TPCConstrainedVsGlobalVertexType; // vertex type for max chi2 TPC track constrained with vtx vs. global track (can be configured to accept several vertex types)
215 Int_t fCutMaxMissingITSPoints; // max n. of missing ITS points
217 Float_t fCutMaxC11; // max cov. matrix diag. elements (res. y^2)
218 Float_t fCutMaxC22; // max cov. matrix diag. elements (res. z^2)
219 Float_t fCutMaxC33; // max cov. matrix diag. elements (res. sin(phi)^2)
220 Float_t fCutMaxC44; // max cov. matrix diag. elements (res. tan(theta_dip)^2)
221 Float_t fCutMaxC55; // max cov. matrix diag. elements (res. 1/pt^2)
223 Float_t fCutMaxRel1PtUncertainty; // max relative uncertainty of 1/pt
225 Bool_t fCutAcceptKinkDaughters; // accepting kink daughters?
226 Bool_t fCutAcceptSharedTPCClusters;// accepting shared clusters in TPC?
227 Float_t fCutMaxFractionSharedTPCClusters; //Maximum fraction of shared clusters in TPC
228 Bool_t fCutRequireTPCRefit; // require TPC refit
229 Bool_t fCutRequireTPCStandAlone; // require TPC standalone tracks
230 Bool_t fCutRequireITSRefit; // require ITS refit
231 Bool_t fCutRequireITSPid; // require ITS pid
232 Bool_t fCutRequireITSStandAlone; // require ITS standalone tracks (remove pure SA)
233 Bool_t fCutRequireITSpureSA; // require ITS pure standalone tracks (found using all ITS clusters)
236 // track to vertex cut
237 Float_t fCutNsigmaToVertex; // max number of estimated sigma from track-to-vertex
238 Bool_t fCutSigmaToVertexRequired; // cut track if sigma from track-to-vertex could not be calculated
239 Float_t fCutMaxDCAToVertexXY; // track-to-vertex cut in max absolute distance in xy-plane
240 Float_t fCutMaxDCAToVertexZ; // track-to-vertex cut in max absolute distance in z-plane
241 Float_t fCutMinDCAToVertexXY; // track-to-vertex cut on min absolute distance in xy-plane
242 Float_t fCutMinDCAToVertexZ; // track-to-vertex cut on min absolute distance in z-plane
244 TString fCutMaxDCAToVertexXYPtDep; // pt-dep track-to-vertex cut in max absolute distance in xy-plane
245 TString fCutMaxDCAToVertexZPtDep; // pt-dep track-to-vertex cut in max absolute distance in z-plane
246 TString fCutMinDCAToVertexXYPtDep; // pt-dep track-to-vertex cut on min absolute distance in xy-plane
247 TString fCutMinDCAToVertexZPtDep; // pt-dep track-to-vertex cut on min absolute distance in z-plane
249 // only internal use, set via strings above
250 TFormula *f1CutMaxDCAToVertexXYPtDep; // pt-dep track-to-vertex cut in max absolute distance in xy-plane
251 TFormula *f1CutMaxDCAToVertexZPtDep; // pt-dep track-to-vertex cut in max absolute distance in z-plane
252 TFormula *f1CutMinDCAToVertexXYPtDep; // pt-dep track-to-vertex cut on min absolute distance in xy-plane
253 TFormula *f1CutMinDCAToVertexZPtDep; // pt-dep track-to-vertex cut on min absolute distance in z-plane
255 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
257 // esd kinematics cuts
258 Float_t fPMin, fPMax; // definition of the range of the P
259 Float_t fPtMin, fPtMax; // definition of the range of the Pt
260 Float_t fPxMin, fPxMax; // definition of the range of the Px
261 Float_t fPyMin, fPyMax; // definition of the range of the Py
262 Float_t fPzMin, fPzMax; // definition of the range of the Pz
263 Float_t fEtaMin, fEtaMax; // definition of the range of the eta
264 Float_t fRapMin, fRapMax; // definition of the range of the y
266 //######################################################
267 // diagnostics histograms
268 Bool_t fHistogramsOn; // histograms on/off
270 TH1F* fhNClustersITS[2]; //->
271 TH1F* fhNClustersTPC[2]; //->
272 TH1F* fhNSharedClustersTPC[2]; //->
273 TH1F* fhNCrossedRowsTPC[2]; //->
274 TH1F* fhRatioCrossedRowsOverFindableClustersTPC[2]; // ->
276 TH1F* fhChi2PerClusterITS[2]; //->
277 TH1F* fhChi2PerClusterTPC[2]; //->
278 TH1F* fhChi2TPCConstrainedVsGlobal[2]; //->
279 TH1F* fhNClustersForITSPID[2]; //-> number of points in SDD+SSD (ITS PID selection)
280 TH1F* fhNMissingITSPoints[2]; //-> number of missing ITS points
288 TH1F* fhRel1PtUncertainty[2]; //-> rel. uncertainty of 1/pt
292 TH1F* fhDXYDZ[2]; //-> absolute distance sqrt(dxy**2 + dz**2) to vertex; if 2D cut is set, normalized to given values
293 TH2F* fhDXYvsDZ[2]; //->
295 TH1F* fhDXYNormalized[2]; //->
296 TH1F* fhDZNormalized[2]; //->
297 TH2F* fhDXYvsDZNormalized[2]; //->
298 TH1F* fhNSigmaToVertex[2]; //->
300 TH1F* fhPt[2]; //-> pt of esd tracks
301 TH1F* fhEta[2]; //-> eta of esd tracks
303 TF1* ffDTheoretical; //-> theoretical distance to vertex normalized (2d gauss)
305 TH1F* fhCutStatistics; //-> statistics of what cuts the tracks did not survive
306 TH2F* fhCutCorrelation; //-> 2d statistics plot
308 ClassDef(AliESDtrackCuts, 17)