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bd24e6dc | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | #include "AliAnalysisTaskDiJets.h" | |
19 | #include "AliAODEvent.h" | |
20 | #include "AliAODJet.h" | |
21 | #include "AliAODDiJet.h" | |
22 | #include <TClonesArray.h> | |
23 | #include <TLorentzVector.h> | |
4f49cbd0 | 24 | #include <TStyle.h> |
bd24e6dc | 25 | |
26 | ||
27 | ClassImp(AliAnalysisTaskDiJets) | |
28 | ||
29 | //////////////////////////////////////////////////////////////////////// | |
30 | ||
31 | AliAnalysisTaskDiJets::AliAnalysisTaskDiJets(): | |
32 | AliAnalysisTaskSE(), | |
33 | fDiJets(0), | |
4f49cbd0 | 34 | fDiJetsIn(0), |
35 | fHistList(0), | |
36 | fH1DeltaPt(0), | |
37 | fH1DeltaPhi(0), | |
38 | fH1PhiImbal(0), | |
39 | fH1Asym(0), | |
40 | fH2Pt2vsPt1(0), | |
41 | fH2DifvsSum(0) | |
bd24e6dc | 42 | { |
43 | // Default constructor | |
44 | } | |
45 | ||
4f49cbd0 | 46 | //---------------------------------------------------------------------- |
bd24e6dc | 47 | AliAnalysisTaskDiJets::AliAnalysisTaskDiJets(const char* name): |
48 | AliAnalysisTaskSE(name), | |
49 | fDiJets(0), | |
4f49cbd0 | 50 | fDiJetsIn(0), |
51 | fHistList(0), | |
52 | fH1DeltaPt(0), | |
53 | fH1DeltaPhi(0), | |
54 | fH1PhiImbal(0), | |
55 | fH1Asym(0), | |
56 | fH2Pt2vsPt1(0), | |
57 | fH2DifvsSum(0) | |
bd24e6dc | 58 | { |
59 | // Default constructor | |
4f49cbd0 | 60 | DefineOutput(1, TList::Class()); |
bd24e6dc | 61 | } |
62 | ||
4f49cbd0 | 63 | //---------------------------------------------------------------------- |
bd24e6dc | 64 | void AliAnalysisTaskDiJets::UserCreateOutputObjects() |
65 | { | |
66 | // Create the output container | |
67 | // | |
68 | if (fDebug > 1) printf("AnalysisTaskDiJets::CreateOutPutData() \n"); | |
69 | fDiJets = new TClonesArray("AliAODDiJet", 0); | |
4f49cbd0 | 70 | fDiJets->SetName("dijets"); |
341bfe06 | 71 | AddAODBranch("TClonesArray", &fDiJets); |
4f49cbd0 | 72 | |
73 | if (!fHistList) fHistList = new TList(); | |
74 | Float_t pi=TMath::Pi(); | |
75 | gStyle->SetPalette(1); | |
76 | ||
77 | fH1DeltaPt = new TH1F("DeltaPt","Difference between the jets' Pt;#Deltap_{T} (GeV/c);Entries",150,0.,150.); | |
78 | fH1DeltaPt->SetMarkerSize(0.6); | |
79 | fH1DeltaPt->SetMarkerColor(4); | |
80 | fH1DeltaPt->SetMarkerStyle(21); | |
81 | fH1DeltaPt->SetOption("E"); | |
82 | ||
83 | fH1DeltaPhi = new TH1F("DeltaPhi","Difference in the azimuthal angle;#Delta#phi;Entries",100,0.,pi); | |
84 | fH1DeltaPhi->SetMarkerSize(0.6); | |
85 | fH1DeltaPhi->SetMarkerColor(4); | |
86 | fH1DeltaPhi->SetMarkerStyle(21); | |
87 | fH1DeltaPhi->SetOption("E"); | |
88 | ||
89 | fH1PhiImbal = new TH1F("PhiImb","Phi imbalance;#phi;Entries",100,-pi,pi); | |
90 | fH1PhiImbal->SetMarkerSize(0.6); | |
91 | fH1PhiImbal->SetMarkerColor(4); | |
92 | fH1PhiImbal->SetMarkerStyle(21); | |
93 | fH1PhiImbal->SetOption("E"); | |
94 | ||
95 | fH1Asym = new TH1F("Asym","Pt asymmetry;#Deltap_{T}/(p_{T,1}+p_{T,2});Entries",50,0.,1.); | |
96 | fH1Asym->SetMarkerSize(0.6); | |
97 | fH1Asym->SetMarkerColor(4); | |
98 | fH1Asym->SetMarkerStyle(21); | |
99 | fH1Asym->SetOption("E"); | |
100 | ||
101 | fH2Pt2vsPt1 = new TH2F("Pt2vsPt1","Pt2 versus Pt1;p_{T,1} (GeV/c);p_{T,2} (GeV/c)",250,0.,250.,250,0.,250.); | |
102 | fH2Pt2vsPt1->SetOption("cont0"); | |
103 | ||
104 | fH2DifvsSum = new TH2F("DifvsSum","Pt difference vs Pt sum;p_{T,1}+p_{T,2} (GeV/c);#Deltap_{T} (GeV/c)",400,0.,400.,150,0.,150.); | |
105 | fH2DifvsSum->SetOption("cont0"); | |
106 | ||
107 | fHistList->Add(fH1DeltaPt); | |
108 | fHistList->Add(fH1DeltaPhi); | |
109 | fHistList->Add(fH1PhiImbal); | |
110 | fHistList->Add(fH1Asym); | |
111 | fHistList->Add(fH2Pt2vsPt1); | |
112 | fHistList->Add(fH2DifvsSum); | |
bd24e6dc | 113 | } |
114 | ||
4f49cbd0 | 115 | //---------------------------------------------------------------------- |
bd24e6dc | 116 | void AliAnalysisTaskDiJets::Init() |
117 | { | |
118 | // Initialization | |
119 | if (fDebug > 1) printf("AnalysisTaskDiJets::Init() \n"); | |
120 | } | |
121 | ||
4f49cbd0 | 122 | //---------------------------------------------------------------------- |
bd24e6dc | 123 | void AliAnalysisTaskDiJets::UserExec(Option_t */*option*/) |
124 | { | |
125 | // Execute analysis for current event | |
126 | // | |
127 | fDiJets->Delete(); | |
128 | AliAODEvent* aod = dynamic_cast<AliAODEvent*> (InputEvent()); | |
6c3180e0 | 129 | |
130 | if(!aod){ | |
131 | // We do not have an input AOD, look in the output | |
132 | aod = AODEvent(); | |
133 | if(!aod){ | |
4f49cbd0 | 134 | if (fDebug >1) printf("%s:%d AODEvent not found in the Output",(char*)__FILE__,__LINE__); |
135 | return; | |
136 | } | |
6c3180e0 | 137 | } |
138 | ||
bd24e6dc | 139 | TClonesArray* jets = aod->GetJets(); |
6c3180e0 | 140 | |
141 | // N.B. if we take the aod from the output this is always | |
142 | // empty and since it is the same as fDiJets | |
4f49cbd0 | 143 | fDiJetsIn = (TClonesArray*) (aod->GetList()->FindObject("dijets")); |
144 | ||
bd24e6dc | 145 | if (fDiJetsIn) { |
4f49cbd0 | 146 | if (fDebug >1) printf("Found %d dijets in old list \n", fDiJetsIn->GetEntries()); |
147 | AliAODJet* jj1, *jj2; | |
148 | AliAODDiJet* testJ; | |
149 | ||
150 | if (fDiJetsIn->GetEntries() > 0) { | |
151 | testJ = (AliAODDiJet*) (fDiJetsIn->At(0)); | |
152 | jj1 = testJ->Jet(0); | |
153 | jj1->Print(""); | |
154 | jj2 = testJ->Jet(1); | |
155 | jj2->Print(""); | |
156 | } | |
bd24e6dc | 157 | } |
4f49cbd0 | 158 | |
bd24e6dc | 159 | Int_t nj = jets->GetEntriesFast(); |
4f49cbd0 | 160 | if (fDebug >1) printf("There are %5d jets in the event \n", nj); |
161 | ||
b3818fc4 | 162 | if (nj < 2){ |
163 | PostData(1, fHistList); | |
164 | return; | |
165 | } | |
4f49cbd0 | 166 | AliAODJet* jet1 = (AliAODJet*) (jets->At(0)); |
167 | TLorentzVector v1 = *(jet1->MomentumVector()); | |
168 | AliAODJet* jet2 = (AliAODJet*) (jets->At(1)); | |
169 | TLorentzVector v2 = *(jet2->MomentumVector()); | |
170 | TLorentzVector v = v1 + v2; | |
171 | Int_t ndi = fDiJets->GetEntriesFast(); | |
172 | TClonesArray &lref = *fDiJets; | |
173 | new(lref[ndi]) AliAODDiJet(v); | |
174 | AliAODDiJet* dijet = (AliAODDiJet*) (fDiJets->At(ndi)); | |
175 | dijet->SetJetRefs(jet1, jet2); | |
176 | ||
177 | fH1DeltaPt->Fill(jet1->Pt()-jet2->Pt()); | |
178 | fH1DeltaPhi->Fill(dijet->DeltaPhi()); | |
179 | fH1PhiImbal->Fill(dijet->PhiImbalance()); | |
180 | fH1Asym->Fill((jet1->Pt()-jet2->Pt())/(jet1->Pt()+jet2->Pt())); | |
181 | fH2Pt2vsPt1->Fill(jet1->Pt(),jet2->Pt()); | |
182 | fH2DifvsSum->Fill(jet1->Pt()+jet2->Pt(),jet1->Pt()-jet2->Pt()); | |
183 | ||
184 | PostData(1, fHistList); | |
185 | return; | |
bd24e6dc | 186 | } |
187 | ||
4f49cbd0 | 188 | //---------------------------------------------------------------------- |
bd24e6dc | 189 | void AliAnalysisTaskDiJets::Terminate(Option_t */*option*/) |
190 | { | |
191 | // Terminate analysis | |
192 | // | |
193 | if (fDebug > 1) printf("AnalysisDiJets: Terminate() \n"); | |
194 | } | |
195 |