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 AliESDtrackCuts(const Char_t* name = "AliESDtrackCuts", const Char_t* title = "");
37 virtual ~AliESDtrackCuts();
39 Bool_t IsSelected(TObject* obj)
40 {return AcceptTrack((AliESDtrack*)obj);}
41 Bool_t IsSelected(TList* /*list*/) {return kTRUE;}
43 Bool_t AcceptTrack(AliESDtrack* esdTrack);
44 TObjArray* GetAcceptedTracks(AliESDEvent* esd,Bool_t bTPC = kFALSE);
45 Int_t CountAcceptedTracks(AliESDEvent* esd);
47 static AliESDtrack* GetTPCOnlyTrack(AliESDEvent* esd, Int_t iTrack);
49 virtual Long64_t Merge(TCollection* list);
50 virtual void Copy(TObject &c) const;
51 AliESDtrackCuts(const AliESDtrackCuts& pd); // Copy Constructor
52 AliESDtrackCuts &operator=(const AliESDtrackCuts &c);
54 //######################################################
55 // track quality cut setters
56 void SetMinNClustersTPC(Int_t min=-1) {fCutMinNClusterTPC=min;}
57 void SetMinNClustersITS(Int_t min=-1) {fCutMinNClusterITS=min;}
58 void SetMaxChi2PerClusterTPC(Float_t max=1e10) {fCutMaxChi2PerClusterTPC=max;}
59 void SetMaxChi2PerClusterITS(Float_t max=1e10) {fCutMaxChi2PerClusterITS=max;}
60 void SetRequireTPCRefit(Bool_t b=kFALSE) {fCutRequireTPCRefit=b;}
61 void SetRequireITSRefit(Bool_t b=kFALSE) {fCutRequireITSRefit=b;}
62 void SetAcceptKingDaughters(Bool_t b=kFALSE) {fCutAcceptKinkDaughters=b;}
63 void SetMaxCovDiagonalElements(Float_t c1=1e10, Float_t c2=1e10, Float_t c3=1e10, Float_t c4=1e10, Float_t c5=1e10)
64 {fCutMaxC11=c1; fCutMaxC22=c2; fCutMaxC33=c3; fCutMaxC44=c4; fCutMaxC55=c5;}
66 // track to vertex cut setters
67 void SetMinNsigmaToVertex(Float_t sigma=1e10) {fCutNsigmaToVertex = sigma;}
68 void SetRequireSigmaToVertex(Bool_t b=kTRUE ) {fCutSigmaToVertexRequired = b;}
69 void SetDCAToVertex(Float_t dist=1e10) {fCutDCAToVertex = dist;}
73 Int_t GetMinNClusterTPC() const { return fCutMinNClusterTPC;}
74 Int_t GetMinNClustersITS() const { return fCutMinNClusterITS;}
75 Float_t GetMaxChi2PerClusterTPC() const { return fCutMaxChi2PerClusterTPC;}
76 Float_t GetMaxChi2PerClusterITS() const { return fCutMaxChi2PerClusterITS;}
77 Bool_t GetRequireTPCRefit() const { return fCutRequireTPCRefit;}
78 Bool_t GetRequireITSRefit() const { return fCutRequireITSRefit;}
79 Bool_t GetAcceptKingDaughters() const { return fCutAcceptKinkDaughters;}
80 void GetMaxCovDiagonalElements(Float_t& c1, Float_t& c2, Float_t& c3, Float_t& c4, Float_t& c5)
81 {c1 = fCutMaxC11; c2 = fCutMaxC22; c3 = fCutMaxC33; c4 = fCutMaxC44; c5 = fCutMaxC55;}
82 Float_t GetMinNsigmaToVertex() const { return fCutNsigmaToVertex;}
83 Bool_t GetRequireSigmaToVertex( ) const { return fCutSigmaToVertexRequired;}
85 // track kinmatic cut setters
86 void SetPRange(Float_t r1=0, Float_t r2=1e10) {fPMin=r1; fPMax=r2;}
87 void SetPtRange(Float_t r1=0, Float_t r2=1e10) {fPtMin=r1; fPtMax=r2;}
88 void SetPxRange(Float_t r1=-1e10, Float_t r2=1e10) {fPxMin=r1; fPxMax=r2;}
89 void SetPyRange(Float_t r1=-1e10, Float_t r2=1e10) {fPyMin=r1; fPyMax=r2;}
90 void SetPzRange(Float_t r1=-1e10, Float_t r2=1e10) {fPzMin=r1; fPzMax=r2;}
91 void SetEtaRange(Float_t r1=-1e10, Float_t r2=1e10) {fEtaMin=r1; fEtaMax=r2;}
92 void SetRapRange(Float_t r1=-1e10, Float_t r2=1e10) {fRapMin=r1; fRapMax=r2;}
94 //######################################################
95 void SetHistogramsOn(Bool_t b=kFALSE) {fHistogramsOn = b;}
96 void DefineHistograms(Int_t color=1);
97 virtual Bool_t LoadHistograms(const Char_t* dir = 0);
98 void SaveHistograms(const Char_t* dir = 0);
99 void DrawHistograms();
101 Float_t GetSigmaToVertex(AliESDtrack* esdTrack);
103 static void EnableNeededBranches(TTree* tree);
105 // void SaveQualityCuts(Char_t* file)
106 // void LoadQualityCuts(Char_t* file)
108 TH1* GetDZNormalized(Int_t i) const { return fhDZNormalized[i]; }
111 void Init(); // sets everything to 0
113 enum { kNCuts = 22 };
115 //######################################################
116 // esd track quality cuts
117 static const Char_t* fgkCutNames[kNCuts]; //! names of cuts (for internal use)
119 Int_t fCutMinNClusterTPC; // min number of tpc clusters
120 Int_t fCutMinNClusterITS; // min number of its clusters
122 Float_t fCutMaxChi2PerClusterTPC; // max tpc fit chi2 per tpc cluster
123 Float_t fCutMaxChi2PerClusterITS; // max its fit chi2 per its cluster
125 Float_t fCutMaxC11; // max cov. matrix diag. elements (res. y^2)
126 Float_t fCutMaxC22; // max cov. matrix diag. elements (res. z^2)
127 Float_t fCutMaxC33; // max cov. matrix diag. elements (res. sin(phi)^2)
128 Float_t fCutMaxC44; // max cov. matrix diag. elements (res. tan(theta_dip)^2)
129 Float_t fCutMaxC55; // max cov. matrix diag. elements (res. 1/pt^2)
131 Bool_t fCutAcceptKinkDaughters; // accepting kink daughters?
132 Bool_t fCutRequireTPCRefit; // require TPC refit
133 Bool_t fCutRequireITSRefit; // require ITS refit
135 // track to vertex cut
136 Float_t fCutNsigmaToVertex; // max number of estimated sigma from track-to-vertex
137 Bool_t fCutSigmaToVertexRequired; // cut track if sigma from track-to-vertex could not be calculated
138 Float_t fCutDCAToVertex; // track-to-vertex cut in absolute distance
140 // esd kinematics cuts
141 Float_t fPMin, fPMax; // definition of the range of the P
142 Float_t fPtMin, fPtMax; // definition of the range of the Pt
143 Float_t fPxMin, fPxMax; // definition of the range of the Px
144 Float_t fPyMin, fPyMax; // definition of the range of the Py
145 Float_t fPzMin, fPzMax; // definition of the range of the Pz
146 Float_t fEtaMin, fEtaMax; // definition of the range of the eta
147 Float_t fRapMin, fRapMax; // definition of the range of the y
149 //######################################################
150 // diagnostics histograms
151 Bool_t fHistogramsOn; // histograms on/off
153 TH1F* fhNClustersITS[2]; //->
154 TH1F* fhNClustersTPC[2]; //->
156 TH1F* fhChi2PerClusterITS[2]; //->
157 TH1F* fhChi2PerClusterTPC[2]; //->
167 TH1F* fhDXYDZ[2]; //-> absolute distance sqrt(dxy**2 + dz**2) to vertex
168 TH2F* fhDXYvsDZ[2]; //->
170 TH1F* fhDXYNormalized[2]; //->
171 TH1F* fhDZNormalized[2]; //->
172 TH2F* fhDXYvsDZNormalized[2]; //->
173 TH1F* fhNSigmaToVertex[2]; //->
175 TH1F* fhPt[2]; //-> pt of esd tracks
176 TH1F* fhEta[2]; //-> eta of esd tracks
178 TF1* ffDTheoretical; //-> theoretical distance to vertex normalized (2d gauss)
180 TH1F* fhCutStatistics; //-> statistics of what cuts the tracks did not survive
181 TH2F* fhCutCorrelation; //-> 2d statistics plot
183 ClassDef(AliESDtrackCuts, 2)