1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 // QA class of Heavy Flavor quark and fragmeted/decayed particles
17 // -Check kinematics of Heavy Quarks/hadrons, and decayed leptons
19 // decay lepton kinematics w/wo acceptance
20 // heavy hadron decay length, electron pT fraction carried from decay
21 // -Check yield of Heavy Quarks/hadrons
22 // Number of produced heavy quark
23 // Number of produced hadron of given pdg code
30 //#include <TObject.h>
39 class AliGenEventHeader;
41 class AliAODMCParticle;
42 class AliHFEcollection;
44 //________________________________________________________________
45 class AliHFEmcQA: public TObject {
48 enum heavyType {kCharm=4, kBeauty=5, kOthers=6, kElectronPDG=11};
49 enum qType {kQuark, kantiQuark, kHadron, keHadron, kDeHadron, kElectron, kElectron2nd};
50 enum SourceType {kDirectCharm=1, kDirectBeauty=2, kBeautyCharm=3, kGamma=4, kPi0=5, kElse=6, kMisID=7, kEta=8, kOmega=9, kPhi=10, kEtaPrime=11, kRho0=12, kGammaPi0=13, kGammaEta=14, kGammaOmega=15, kGammaPhi=16, kGammaEtaPrime=17, kGammaRho0=18};
52 kPairCreationFromq, kPairCreationFromg, kFlavourExitation, kGluonSplitting, kInitialPartonShower, kLightQuarkShower
61 AliHFEmcQA(const AliHFEmcQA &p); // copy constructor
62 AliHFEmcQA &operator=(const AliHFEmcQA &); // assignment operator
64 virtual ~AliHFEmcQA();
66 TList *GetList() const { return fQAhistos; };
67 void PostAnalyze() const;
68 void CreatDefaultHistograms(TList * const qaList); // create default histograms
69 void CreateHistograms(const Int_t kquark, Int_t icut, TString hnopt=""); // create histograms for mc qa analysis
70 void SetMCEvent(AliMCEvent* const mcEvent){fMCEvent = mcEvent;}
71 void SetGenEventHeader(AliGenEventHeader* const mcHeader){fMCHeader=mcHeader;} // set stack pointer
72 void SetMCArray(TClonesArray* const mcarry){fMCArray=mcarry;} // set mcarray pointer
75 void GetQuarkKine(TParticle *part, Int_t iTrack, const Int_t kquark); // get heavy quark kinematics distribution
76 void GetHadronKine(TParticle *part, const Int_t kquark); // get heavy hadron kinematics distribution
77 void GetDecayedKine(TParticle *part, const Int_t kquark, const Int_t kdecayed, Int_t icut); // get decay electron kinematics distribution
78 void GetDecayedKine(AliAODMCParticle *mcpart, const Int_t kquark, Int_t kdecayed, Int_t icut); // get decay electron kinematics for AOD
79 void GetMesonKine(); // get meson and its decay electron pt spectra
80 void EndOfEventAna(const Int_t kquark); // run analysis which should be done at the end of the event loop
81 Int_t GetSource(const TParticle * const mcpart); // return source id
82 Int_t GetElecSource(TParticle * const mcpart); // return electron source id
83 Int_t GetSource(const AliAODMCParticle * const mcpart); // return electron source id for AOD
84 Double_t GetWeightFactor(AliMCParticle *mctrack); // return weighting factor for electron's mother meson
86 void SetBackgroundWeightFactor(Double_t *elecBackgroundFactor, Double_t *binLimit);
87 // void SetBackgroundWeightFactor(Double_t const elecBackgroundFactor[6][44], Double_t const binLimit[45]) {fElecBackgroundFactor=elecBackgroundFactor; fBinLimit=binLimit;}
90 void IdentifyMother(Int_t motherlabel, Int_t &motherpdg, Int_t &grandmotherlabel); //
91 void HardScattering(const Int_t kquark, Int_t &motherID, Int_t &mothertype, Int_t &motherlabel); // check if the quark is produced from hard scattering
92 void ReportStrangeness(Int_t &motherID, Int_t &mothertype, Int_t &motherlabel); // report if the quark production process is unknown
93 Bool_t IsFromInitialShower(Int_t inputmotherlabel, Int_t &motherID, Int_t &mothertype, Int_t &motherlabel); // check if the quark is produced from initial parton shower
94 Bool_t IsFromFinalParton(Int_t inputmotherlabel, Int_t &motherID, Int_t &mothertype, Int_t &motherlabel); // check if the quark is produced from final parton shower
96 AliMCEvent* fMCEvent; // mcevent pointer
97 AliGenEventHeader* fMCHeader; // mcheader pointer
98 TClonesArray *fMCArray; // mc array pointer
100 static const Int_t fgkGluon=21; // gluon pdg code
101 static const Int_t fgkMaxGener=10; // ancester level wanted to be checked
102 static const Int_t fgkMaxIter=100; // number of iteration to find out matching particle
103 static const Int_t fgkqType=7; // number of particle type to be checked
106 TH1F *fPdgCode; // histogram to store particle pdg code
107 TH1F *fPt; // histogram to store pt
108 TH1F *fY; // histogram to store rapidity
109 TH1F *fEta; // histogram to store eta
117 // default constructor
119 AliHists(const AliHists & p)
120 : fPdgCode(p.fPdgCode)
127 AliHists &operator=(const AliHists &)
129 // assignment operator, not yet implemented
132 void FillList(TList *l) const;
134 struct AliHistsComm {
135 TH1F *fNq; // histogram to store number of quark
136 TH1F *fProcessID; // histogram to store process id
137 TH2F *fePtRatio; // fraction of electron pT from D or B hadron
138 TH2F *fPtCorr; // pt correlation between e and direct D or B
139 TH2F *fPtCorrDp; // pt correlation between e and direct D+
140 TH2F *fPtCorrD0; // pt correlation between e and direct D0
141 TH2F *fPtCorrDrest; // pt correlation between e and direct D rest
142 TH2F *fDePtRatio; // fraction of D electron pT from B hadron
143 TH2F *feDistance; // distance between electron production point to mother particle
144 TH2F *fDeDistance; // distance between D electron production point to mother particle
158 // default constructor
160 AliHistsComm(const AliHistsComm & p)
162 , fProcessID(p.fProcessID)
163 , fePtRatio(p.fePtRatio)
165 , fPtCorrDp(p.fPtCorrDp)
166 , fPtCorrD0(p.fPtCorrD0)
167 , fPtCorrDrest(p.fPtCorrDrest)
168 , fDePtRatio(p.fDePtRatio)
169 , feDistance(p.feDistance)
170 , fDeDistance(p.fDeDistance)
174 AliHistsComm &operator=(const AliHistsComm &)
176 // assignment operator, not yet implemented
179 void FillList(TList *l) const;
182 AliHists fHist[3][7][6]; // struct of histograms to store kinematics of given particles
183 AliHistsComm fHistComm[2][6]; // struct of additional histograms of given particles
184 TH2F *fhD[9]; // D meson pt,Y spectra
185 TH1F *fhDLogbin[9]; // D meson pt w diff binning
187 TList *fQAhistos; // Container for QA histos
188 AliHFEcollection *fMCQACollection; //! Tasks own QA collection
189 TParticle *fHeavyQuark[50]; //! store pointer of heavy flavour quark
190 Int_t fIsHeavy[2]; // count of heavy flavour
191 Int_t fNparents; // number of heavy hadrons to be considered
192 Int_t fParentSelect[2][7]; // heavy hadron species
194 Double_t fElecBackgroundFactor[6][44]; // Electron background factors
195 Double_t fBinLimit[45]; // Electron background bins
197 ClassDef(AliHFEmcQA,1);