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"
33 class AliESDtrackCuts : public AliAnalysisCuts
36 enum ITSClusterRequirement { kOff = 0, kNone, kAny, kFirst, kOnlyFirst, kSecond, kOnlySecond, kBoth };
37 enum Detector { kSPD = 0, kSDD, kSSD };
39 AliESDtrackCuts(const Char_t* name = "AliESDtrackCuts", const Char_t* title = "");
40 virtual ~AliESDtrackCuts();
42 Bool_t IsSelected(TObject* obj)
43 {return AcceptTrack((AliESDtrack*)obj);}
44 Bool_t IsSelected(TList* /*list*/) {return kTRUE;}
46 Bool_t AcceptTrack(AliESDtrack* esdTrack);
47 TObjArray* GetAcceptedTracks(AliESDEvent* esd, Bool_t bTPC = kFALSE);
48 Int_t CountAcceptedTracks(AliESDEvent* esd);
50 static AliESDtrack* GetTPCOnlyTrack(AliESDEvent* esd, Int_t iTrack);
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);
57 //######################################################
58 // track quality cut setters
59 void SetMinNClustersTPC(Int_t min=-1) {fCutMinNClusterTPC=min;}
60 void SetMinNClustersITS(Int_t min=-1) {fCutMinNClusterITS=min;}
61 void SetClusterRequirementITS(Detector det, ITSClusterRequirement req = kOff) { fCutClusterRequirementITS[det] = req; }
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;}
66 void SetAcceptKingDaughters(Bool_t b=kFALSE) {fCutAcceptKinkDaughters=b;}
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;}
70 // track to vertex cut setters
71 void SetMaxNsigmaToVertex(Float_t sigma=1e10) {fCutNsigmaToVertex = sigma; SetRequireSigmaToVertex(kTRUE);}
72 void SetRequireSigmaToVertex(Bool_t b=kTRUE ) {fCutSigmaToVertexRequired = b;}
73 void SetMaxDCAToVertexXY(Float_t dist=1e10) {fCutDCAToVertexXY = dist;}
74 void SetMaxDCAToVertexZ(Float_t dist=1e10) {fCutDCAToVertexZ = dist;}
75 void SetDCAToVertex2D(Bool_t b=kFALSE) {fCutDCAToVertex2D = b;}
77 // deprecated, will be removed in next release
78 void SetMaxDCAToVertex(Float_t dist=1e10);
79 void SetMinNsigmaToVertex(Float_t sigma=1e10);
80 void SetDCAToVertex(Float_t dist=1e10);
81 void SetDCAToVertexXY(Float_t dist=1e10);
82 void SetDCAToVertexZ(Float_t dist=1e10);
83 Float_t GetMinNsigmaToVertex() const;
87 Int_t GetMinNClusterTPC() const { return fCutMinNClusterTPC;}
88 Int_t GetMinNClustersITS() const { return fCutMinNClusterITS;}
89 ITSClusterRequirement GetClusterRequirementITS(Detector det) const { return fCutClusterRequirementITS[det]; }
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;}
94 Bool_t GetAcceptKingDaughters() const { return fCutAcceptKinkDaughters;}
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;}
97 Float_t GetMaxNsigmaToVertex() const { return fCutNsigmaToVertex;}
98 Float_t GetMaxDCAToVertexXY() const { return fCutDCAToVertexXY;}
99 Float_t GetMaxDCAToVertexZ() const { return fCutDCAToVertexZ;}
100 Bool_t GetDCAToVertex2D() const { return fCutDCAToVertex2D;}
101 Bool_t GetRequireSigmaToVertex( ) const { return fCutSigmaToVertexRequired;}
103 void GetPRange(Float_t& r1, Float_t& r2) {r1=fPMin; r2=fPMax;}
104 void GetPtRange(Float_t& r1, Float_t& r2) {r1=fPtMin; r2=fPtMax;}
105 void GetPxRange(Float_t& r1, Float_t& r2) {r1=fPxMin; r2=fPxMax;}
106 void GetPyRange(Float_t& r1, Float_t& r2) {r1=fPyMin; r2=fPyMax;}
107 void GetPzRange(Float_t& r1, Float_t& r2) {r1=fPzMin; r2=fPzMax;}
108 void GetEtaRange(Float_t& r1, Float_t& r2) {r1=fEtaMin; r2=fEtaMax;}
109 void GetRapRange(Float_t& r1, Float_t& r2) {r1=fRapMin; r2=fRapMax;}
111 // track kinmatic cut setters
112 void SetPRange(Float_t r1=0, Float_t r2=1e10) {fPMin=r1; fPMax=r2;}
113 void SetPtRange(Float_t r1=0, Float_t r2=1e10) {fPtMin=r1; fPtMax=r2;}
114 void SetPxRange(Float_t r1=-1e10, Float_t r2=1e10) {fPxMin=r1; fPxMax=r2;}
115 void SetPyRange(Float_t r1=-1e10, Float_t r2=1e10) {fPyMin=r1; fPyMax=r2;}
116 void SetPzRange(Float_t r1=-1e10, Float_t r2=1e10) {fPzMin=r1; fPzMax=r2;}
117 void SetEtaRange(Float_t r1=-1e10, Float_t r2=1e10) {fEtaMin=r1; fEtaMax=r2;}
118 void SetRapRange(Float_t r1=-1e10, Float_t r2=1e10) {fRapMin=r1; fRapMax=r2;}
120 //######################################################
121 void SetHistogramsOn(Bool_t b=kFALSE) {fHistogramsOn = b;}
122 void DefineHistograms(Int_t color=1);
123 virtual Bool_t LoadHistograms(const Char_t* dir = 0);
124 void SaveHistograms(const Char_t* dir = 0);
125 void DrawHistograms();
127 static Float_t GetSigmaToVertex(AliESDtrack* esdTrack);
129 static void EnableNeededBranches(TTree* tree);
131 // void SaveQualityCuts(Char_t* file)
132 // void LoadQualityCuts(Char_t* file)
134 TH1* GetDZNormalized(Int_t i) const { return fhDZNormalized[i]; }
137 void Init(); // sets everything to 0
138 Bool_t CheckITSClusterRequirement(ITSClusterRequirement req, Bool_t clusterL1, Bool_t clusterL2);
140 enum { kNCuts = 27 };
142 //######################################################
143 // esd track quality cuts
144 static const Char_t* fgkCutNames[kNCuts]; //! names of cuts (for internal use)
146 Int_t fCutMinNClusterTPC; // min number of tpc clusters
147 Int_t fCutMinNClusterITS; // min number of its clusters
149 ITSClusterRequirement fCutClusterRequirementITS[3]; // detailed ITS cluster requirements for (SPD, SDD, SSD)
151 Float_t fCutMaxChi2PerClusterTPC; // max tpc fit chi2 per tpc cluster
152 Float_t fCutMaxChi2PerClusterITS; // max its fit chi2 per its cluster
154 Float_t fCutMaxC11; // max cov. matrix diag. elements (res. y^2)
155 Float_t fCutMaxC22; // max cov. matrix diag. elements (res. z^2)
156 Float_t fCutMaxC33; // max cov. matrix diag. elements (res. sin(phi)^2)
157 Float_t fCutMaxC44; // max cov. matrix diag. elements (res. tan(theta_dip)^2)
158 Float_t fCutMaxC55; // max cov. matrix diag. elements (res. 1/pt^2)
160 Bool_t fCutAcceptKinkDaughters; // accepting kink daughters?
161 Bool_t fCutRequireTPCRefit; // require TPC refit
162 Bool_t fCutRequireITSRefit; // require ITS refit
164 // track to vertex cut
165 Float_t fCutNsigmaToVertex; // max number of estimated sigma from track-to-vertex
166 Bool_t fCutSigmaToVertexRequired; // cut track if sigma from track-to-vertex could not be calculated
167 Float_t fCutDCAToVertexXY; // track-to-vertex cut in absolute distance in xy-plane
168 Float_t fCutDCAToVertexZ; // track-to-vertex cut in absolute distance in z-plane
169 Bool_t fCutDCAToVertex2D; // if true a 2D DCA cut using fCutDCAToVertexXY and fCutDCAToVertexZ is made. Tracks are accepted if sqrt((DCAXY / fCutDCAToVertexXY)^2 + (DCAZ / fCutDCAToVertexZ)^2) < 1
171 // esd kinematics cuts
172 Float_t fPMin, fPMax; // definition of the range of the P
173 Float_t fPtMin, fPtMax; // definition of the range of the Pt
174 Float_t fPxMin, fPxMax; // definition of the range of the Px
175 Float_t fPyMin, fPyMax; // definition of the range of the Py
176 Float_t fPzMin, fPzMax; // definition of the range of the Pz
177 Float_t fEtaMin, fEtaMax; // definition of the range of the eta
178 Float_t fRapMin, fRapMax; // definition of the range of the y
180 //######################################################
181 // diagnostics histograms
182 Bool_t fHistogramsOn; // histograms on/off
184 TH1F* fhNClustersITS[2]; //->
185 TH1F* fhNClustersTPC[2]; //->
187 TH1F* fhChi2PerClusterITS[2]; //->
188 TH1F* fhChi2PerClusterTPC[2]; //->
198 TH1F* fhDXYDZ[2]; //-> absolute distance sqrt(dxy**2 + dz**2) to vertex; if 2D cut is set, normalized to given values
199 TH2F* fhDXYvsDZ[2]; //->
201 TH1F* fhDXYNormalized[2]; //->
202 TH1F* fhDZNormalized[2]; //->
203 TH2F* fhDXYvsDZNormalized[2]; //->
204 TH1F* fhNSigmaToVertex[2]; //->
206 TH1F* fhPt[2]; //-> pt of esd tracks
207 TH1F* fhEta[2]; //-> eta of esd tracks
209 TF1* ffDTheoretical; //-> theoretical distance to vertex normalized (2d gauss)
211 TH1F* fhCutStatistics; //-> statistics of what cuts the tracks did not survive
212 TH2F* fhCutCorrelation; //-> 2d statistics plot
214 ClassDef(AliESDtrackCuts, 4)