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[u/mrichter/AliRoot.git] / PHOS / AliPHOSGammaJet.h
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77414c90 1#ifndef ALIPHOSGammaJet_H
2#define ALIPHOSGammaJet_H
3/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
5/* $Id$ */
6
702ab87e 7/* History of cvs commits:
8 *
9 * $Log$
7b54ea5c 10 * Revision 1.9 2005/12/20 07:31:51 schutz
11 * added data members
12 *
eb0b1051 13 * Revision 1.7 2005/05/28 14:19:04 schutz
14 * Compilation warnings fixed by T.P.
15 *
702ab87e 16 */
17
77414c90 18//_________________________________________________________________________
e8daeb92 19// Class for the analysis of gamma-jet correlations.
20// Basically it seaches for a prompt photon in the PHOS acceptance,
21// if so we construct a jet around the highest pt particle in the opposite
22// side in azimuth. This jet has to fullfill several conditions to be
23// accepted. Then the fragmentation function of this jet is constructed
24
77414c90 25//*-- Author: Gustavo Conesa & Yves Schutz (IFIC, CERN)
26
27// --- ROOT system ---
28#include "TTask.h"
e8daeb92 29#include "TRandom.h"
30#include "TArrayD.h"
ea7ab9df 31#include "AliESD.h"
7b54ea5c 32#include "TChain.h"
ea7ab9df 33
e8daeb92 34class AliPHOSFastGlobalReconstruction ;
7b54ea5c 35
e8daeb92 36//#include "../PYTHIA6/AliGenPythia.h"
7b54ea5c 37
77414c90 38// --- AliRoot header files ---
39
40class AliPHOSGammaJet : public TTask {
41
42public:
43
44 AliPHOSGammaJet() ; // default ctor
45 AliPHOSGammaJet(const TString inputfilename) ; //ctor
90cceaf6 46 AliPHOSGammaJet(const AliPHOSGammaJet & gj) ; // cpy ctor
e8daeb92 47 AliPHOSGammaJet & operator = (const AliPHOSGammaJet & /*rvalue*/)
48 { return *this ;} //assignement operator requested by coding convention but not needed
49 virtual ~AliPHOSGammaJet() ; //virtual dtor
1305bc01 50 virtual void Exec(Option_t *option);
51 void List() const;
e8daeb92 52 Double_t GetAngleMaxParam(Int_t i) const {return fAngleMaxParam.At(i) ; }
53 Double_t GetEtaCut() const {return fEtaCut;}
54 Double_t GetPhiEMCALCut(Int_t i) const {return fPhiEMCALCut[i];}
55 TString GetHIJINGFileName() const {return fHIJINGFileName ; }
56 TString GetHistosFileName() const {return fOutputFileName ; }
57 Double_t GetInvMassMaxCut() const {return fInvMassMaxCut ; }
58 Double_t GetInvMassMinCut() const {return fInvMassMinCut ; }
59 Double_t GetPhiMaxCut() const {return fPhiMaxCut ; }
60 Double_t GetPhiMinCut() const {return fPhiMinCut ; }
61 Double_t GetPtCut() const {return fPtCut ; }
62 Double_t GetNeutralPtCut() const {return fNeutralPtCut ; }
63 Double_t GetChargedPtCut() const {return fChargedPtCut ; }
64 Double_t GetPtJetSelectionCut() const {return fPtJetSelectionCut ; }
65 Double_t GetMinDistance() const {return fMinDistance ; }
66 Double_t GetJetRatioMaxCut() const {return fJetRatioMaxCut ; }
67 Double_t GetJetRatioMinCut() const {return fJetRatioMinCut ; }
68 Double_t GetRatioMaxCut() const {return fRatioMaxCut ; }
69 Double_t GetRatioMinCut() const {return fRatioMinCut ; }
70 Int_t GetNEvent() const {return fNEvent ; }
71 Int_t GetNCones() const {return fNCone ; }
72 Int_t GetNPtThres() const {return fNPt ; }
73 Float_t GetCone() const {return fCone ; }
74 Float_t GetPtThreshold() const {return fPtThreshold ; }
75 Float_t GetCones(Int_t i) const {return fCones[i] ; }
76 Float_t GetPtThreshold(Int_t i) const {return fPtThres[i] ; }
77 TString GetConeName(Int_t i) const {return fNameCones[i] ; }
78 TString GetPtThresName(Int_t i) const {return fNamePtThres[i] ; }
79 Bool_t GetTPCCutsLikeEMCAL() const {return fTPCCutsLikeEMCAL ; }
ea7ab9df 80 Bool_t IsESDdata() const {return fESDdata ; }
81
82 TString GetDirName() const {return fDirName ; }
83 TString GetESDTreeName() const {return fESDTree ; }
84 char * GetDirPattern() const {return fPattern ; }
e8daeb92 85
86 Bool_t IsAnyConeOrPt() const {return fAnyConeOrPt ; }
87 Bool_t IsFastReconstruction() const {return fOptFast ; }
88 Bool_t IsHIJING() const {return fHIJING ; }
89 Bool_t IsOnlyCharged() const {return fOnlyCharged ; }
1305bc01 90
91 void Plot(TString what="all", Option_t *option="") const;
702ab87e 92 void Print(const Option_t * opt)const;
1305bc01 93
94 void SetAngleMaxParam(Int_t i, Double_t par)
95 {fAngleMaxParam.AddAt(par,i) ; }
96 void SetAnyConeOrPt(Bool_t any){fAnyConeOrPt = any ;}
97 void SetEtaCut(Double_t etacut) {fEtaCut = etacut ; }
98 void SetPhiEMCALCut(Double_t phi, Int_t i){fPhiEMCALCut[i] = phi; }
99 void SetFastReconstruction(Bool_t fast){fOptFast = fast ; }
100 void SetHIJING(Bool_t opt){fHIJING = opt; }
101 void SetHIJINGFileName(TString file){fHIJINGFileName = file ; }
102 void SetNCones(Int_t n){fNCone = n ; }
103 void SetNPtThresholds(Int_t n){fNPt = n ; }
104 void SetCones(Int_t i, Float_t cone, TString sc)
105 {fCones[i] = cone ; fNameCones[i] = sc; };
106 void SetCone(Float_t cone)
107 {fCone = cone; }
108 void SetPtThreshold(Float_t pt){fPtThreshold = pt; };
109 void SetPtThresholds(Int_t i,Float_t pt, TString spt){fPtThres[i] = pt ;
110 fNamePtThres[i] = spt; };
111 void SetOnlyCharged(Bool_t opt){fOnlyCharged = opt; }
112 void SetPythiaFileName(TString file){fInputFileName = file ; }
113 void SetHistosFileName(TString file){fOutputFileName = file ; }
114 void SetInvMassCutRange(Double_t invmassmin, Double_t invmassmax)
115 {fInvMassMaxCut =invmassmax; fInvMassMinCut =invmassmin;}
116 void SetJetRatioCutRange(Double_t ratiomin, Double_t ratiomax)
117 {fJetRatioMaxCut =ratiomax; fJetRatioMinCut = ratiomin ; }
118 void SetJetTPCRatioCutRange(Double_t ratiomin, Double_t ratiomax)
119 {fJetTPCRatioMaxCut =ratiomax; fJetTPCRatioMinCut = ratiomin ; }
120 void SetNEvent(Int_t n){fNEvent = n ; }
121 void SetMinDistance(Double_t min){fMinDistance = min ; }
122 void SetPhiCutRange(Double_t phimin, Double_t phimax)
123 {fPhiMaxCut =phimax; fPhiMinCut =phimin;}
124 void SetPtCut(Double_t ptcut)
125 {fPtCut =ptcut;}
126 void SetNeutralPtCut(Double_t ptcut)
127 {fNeutralPtCut =ptcut;}
128 void SetChargedPtCut(Double_t ptcut)
129 {fChargedPtCut =ptcut;}
130 void SetPtJetSelectionCut(Double_t cut){fPtJetSelectionCut = cut; }
131 void SetJetSelection(Bool_t select){ fSelect= select ; }
132 void SetRatioCutRange(Double_t ratiomin, Double_t ratiomax)
133 {fRatioMaxCut = ratiomax; fRatioMinCut = ratiomin;}
134 void SetTPCCutsLikeEMCAL(Bool_t b){ fTPCCutsLikeEMCAL= b ; }
ea7ab9df 135 void SetESDdata(Bool_t b){ fESDdata= b ; }
1305bc01 136
ea7ab9df 137 void SetDirName(TString dn) { fDirName = dn ; }
138 void SetESDTreeName(TString en) { fESDTree = en ; }
139 void SetDirPattern(char * dp) { fPattern = dp ; }
1305bc01 140
141 private:
142// void AddHIJINGToList(TList & particleList, TList & particleListCh,
143// TList & particleListNe, const Int_t iEvent,
144// const TLorentzVector gamma, Double_t & rot );
145
146 void AddHIJINGToList(Int_t iEvent, TClonesArray * particleList,
147 TClonesArray * plCh, TClonesArray * plNe,
ea7ab9df 148 TClonesArray * plNePHOS);
1305bc01 149
150
ea7ab9df 151 Double_t CalculateJetRatioLimit(const Double_t ptg, const Double_t *param,
1305bc01 152 const Double_t *x);
153
154 void CreateParticleList(Int_t iEvent, TClonesArray * particleList,
155 TClonesArray * plCh, TClonesArray * plNe,
ea7ab9df 156 TClonesArray * plNePHOS);
157 void CreateParticleListFromESD(TClonesArray * particleList,
158 TClonesArray * plCh, TClonesArray * plNe,
159 TClonesArray * plNePHOS,
160 const AliESD * esd );//, Int_t iEvent);
1305bc01 161
162 void FillJetHistos(TClonesArray * pl, Double_t ptg, TString conf, TString type);
163
164 void FillJetHistosAnyConeOrPt( TClonesArray * pl, Double_t ptg, TString conf,
165 TString type, TString cone, TString ptcut);
ea7ab9df 166 Bool_t IsAngleInWindow(const Float_t angle, const Float_t e);
167 Bool_t IsJetSelected(const Double_t ptg, const Double_t ptjet,
1305bc01 168 const TString type);
169
170 void MakeJet(TClonesArray * particleList,
171 Double_t ptg, Double_t phig,
172 Double_t ptl, Double_t phil, Double_t etal,
173 TString type, TLorentzVector & jet);
174 void MakeJetAnyConeOrPt(TClonesArray * particleList, Double_t ptg,
5ef8821d 175 Double_t phig, Double_t ptl, Double_t phil,
1305bc01 176 Double_t etal, TString type);
177 void GetGammaJet(TClonesArray * pl, Double_t &pt,
e8daeb92 178 Double_t &phi, Double_t &eta, Bool_t &Is) const;
1305bc01 179
180 void GetLeadingCharge(TClonesArray * pl,
181 Double_t ptg, Double_t phig,
e8daeb92 182 Double_t &pt, Double_t &eta, Double_t &phi) const ;
1305bc01 183 void GetLeadingPi0 (TClonesArray * pl,
184 Double_t ptg, Double_t phig,
e8daeb92 185 Double_t &pt, Double_t &eta, Double_t &phi) ;
1305bc01 186
187 void InitParameters();
ea7ab9df 188 Double_t MakeEnergy(const Double_t energy) ;
1305bc01 189 void MakeHistos() ;
190 void MakePhoton(TLorentzVector & particle) ;
ea7ab9df 191 TVector3 MakePosition(const Double_t energy, const TVector3 pos) ;
1305bc01 192
77414c90 193 void Pi0Decay(Double_t mPi0, TLorentzVector &p0,
1305bc01 194 TLorentzVector &p1, TLorentzVector &p2, Double_t &angle) ;
7b54ea5c 195
196 TChain * ReadESDfromdisk(const UInt_t eventsToRead,
197 const TString dirName,
198 const TString esdTreeName = "esdTree",
199 const char * pattern = "Evt") ;
200 TChain * ReadESD(const UInt_t eventsToRead = 1,
201 TString fileName = "",
202 const TString esdTreeName = "esdTree",
203 const char * pattern = "Evt" ) ;
204
1305bc01 205 Double_t SigmaE(Double_t energy) ;
206 Double_t SigmaP(Double_t energy) ;
7b54ea5c 207
1305bc01 208 void SetJet(TParticle * part, Bool_t & b, Float_t cone, Double_t eta,
209 Double_t phi);
210
211 private:
e8daeb92 212 Bool_t fAnyConeOrPt; // To play with the jet cone size and pt th.
213 Option_t * fOptionGJ ; //! Fill most interesting histograms
1305bc01 214 // and give interesting information
215 TFile * fOutputFile ; //! Output file
216 TString fOutputFileName; //! Output file Name
217 TString fInputFileName; //!
218 TString fHIJINGFileName; //!
e8daeb92 219 Bool_t fHIJING; // Add HIJING event to PYTHIA event?
ea7ab9df 220 Bool_t fESDdata ; // Read ESD?
1305bc01 221 Double_t fEtaCut ; // Eta cut
222 Bool_t fOnlyCharged ; // Only jets of charged particles
223 Double_t fPhiEMCALCut[2] ; // Phi cut maximum
224 Double_t fPhiMaxCut ; // Phi cut maximum
225 Double_t fPhiMinCut ; // Phi cut minimun
226 Double_t fPtCut ; // Min pt in PHOS
227 Double_t fNeutralPtCut ; // Min pt detected in PHOS
228 Double_t fChargedPtCut ; // Min pt detected in TPC
229 Double_t fInvMassMaxCut ; // Invariant Mass cut maximum
230 Double_t fInvMassMinCut ; // Invariant Masscut minimun
231 Double_t fMinDistance ; // Minimal distance to resolve gamma decay.
232 Double_t fRatioMaxCut ; // Leading particle/gamma Ratio cut maximum
233 Double_t fRatioMinCut ; // Leading particle/gamma Ratio cut minimum
234 Bool_t fTPCCutsLikeEMCAL ; //Same jet energy ratio limits for both conf.
235
ea7ab9df 236 //Read ESD Paramenters
fb57ea96 237 TString fDirName ; //Name of the directory where data is
238 TString fESDTree ; //Name of the ESD Tree
239 char * fPattern ; //Pattern followed by directory data
ea7ab9df 240
1305bc01 241 //Jet selection parameters
242 //Fixed cuts (old)
243 Double_t fJetTPCRatioMaxCut ; // Leading particle/gamma Ratio cut maximum
244 Double_t fJetTPCRatioMinCut ; // Leading particle/gamma Ratio cut minimum
245 Double_t fJetRatioMaxCut ; // Jet/gamma Ratio cut maximum
246 Double_t fJetRatioMinCut ; // Jet/gamma Ratio cut minimum
247
248 //Cuts depending on jet pt
e8daeb92 249 Double_t fJetE1[2]; //Rec. jet energy parameters
250 Double_t fJetE2[2]; //Rec. jet energy parameters
251 Double_t fJetSigma1[2];//Rec. sigma of jet energy parameters
252 Double_t fJetSigma2[2];//Rec. sigma of jet energy parameters
253 Double_t fBkgMean[6]; //Background mean energy
254 Double_t fBkgRMS[6]; //Background RMS
255 Double_t fJetXMin1[6]; //X Factor to set jet min limit for pp
256 Double_t fJetXMin2[6]; //X Factor to set jet min limit for PbPb
257 Double_t fJetXMax1[6]; //X Factor to set jet max limit for pp
258 Double_t fJetXMax2[6]; //X Factor to set jet max limit for PbPb
259
260 Int_t fNEvent ; // Number of events to analyze
261 Int_t fNCone ; // Number of jet cones sizes
262 Int_t fNPt ; // Number of jet particle pT threshold
263 Double_t fCone ; // Jet cone sizes under study (!fAnyConeSize)
264 Double_t fCones[10]; // Jet cone sizes under study (fAnyConeSize)
265 TString fNameCones[10]; // String name of cone to append to histos
266 Double_t fPtThreshold; // Jet pT threshold under study(!fAnyConeSize)
267 Double_t fPtThres[10]; // Jet pT threshold under study(fAnyConeSize)
268 Double_t fPtJetSelectionCut; // Jet pt to change to low pt jets analysis
269 TString fNamePtThres[10]; // String name of pt th to append to histos
270 TObjArray * fListHistos ; //! list of Histograms
271 AliPHOSFastGlobalReconstruction * fFastRec; //Pointer to fast recons.
272 Bool_t fOptFast; // Do we want fast Rec?
1305bc01 273 TRandom fRan ; //! random number generator
274 //Energy and position parameters
275 Double_t fResPara1 ; // parameter for the energy resolution dependence
276 Double_t fResPara2 ; // parameter for the energy resolution dependence
277 Double_t fResPara3 ; // parameter for the energy resolution dependence
278 Double_t fPosParaA ; // parameter for the position resolution
279 Double_t fPosParaB ; // parameter for the position resolution
e8daeb92 280 TArrayD fAngleMaxParam ; //Max opening angle selection parameters
1305bc01 281 Bool_t fSelect ; //Select jet within limits
282
ea7ab9df 283 ClassDef(AliPHOSGammaJet,3)
1305bc01 284} ;
285
77414c90 286
77414c90 287#endif //ALIPHOSGammaJet_H
1305bc01 288
289
290