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48d874ff | 1 | // $Id$ |
2 | ||
3 | #include "AliEsdJetTask.h" | |
4 | #include <TClonesArray.h> | |
5 | #include <TParticle.h> | |
6 | #include "AliAODJet.h" | |
7 | #include "AliAnalysisManager.h" | |
8 | #include "AliESDtrack.h" | |
9 | #include "AliESDtrackCuts.h" | |
10 | #include "AliFJWrapper.h" | |
11 | #include "AliESDCaloCluster.h" | |
12 | ||
13 | ClassImp(AliEsdJetTask) | |
14 | ||
15 | #ifdef __HAVE_FJINTERFACE__ | |
16 | //________________________________________________________________________ | |
17 | AliEsdJetTask::AliEsdJetTask(const char *name) : | |
18 | AliAnalysisTaskSE("AliEsdJetTask"), | |
19 | fPrimTrCuts(0), | |
20 | fPrimTracksName("Tracks"), | |
21 | fJetsName("Jets"), | |
22 | fCaloName("CaloClusters"), | |
23 | fAlgo(1), | |
24 | fRadius(0.4), | |
25 | fType(0), | |
26 | fHadCorr(0), | |
27 | fJets(0), | |
28 | fNeutrals(0) | |
29 | { | |
30 | // Standard constructor. | |
31 | if (!name) | |
32 | return; | |
33 | SetName(name); | |
34 | fBranchNames="ESD:AliESDRun.,AliESDHeader.,PrimaryVertex.,CaloClusters,Tracks"; | |
35 | } | |
36 | ||
37 | //________________________________________________________________________ | |
38 | AliEsdJetTask::~AliEsdJetTask() | |
39 | { | |
40 | // Destructor | |
41 | } | |
42 | ||
43 | //________________________________________________________________________ | |
44 | void AliEsdJetTask::UserCreateOutputObjects() | |
45 | { | |
46 | // Create user objects. | |
47 | ||
48 | fJets = new TClonesArray("AliAODJet"); | |
49 | fJets->SetName(fJetsName); | |
50 | ||
51 | if ((fType==0)||(fType==2)) { | |
52 | fNeutrals = new TClonesArray("TLorentzVector"); | |
53 | fNeutrals->SetName(Form("%s_neutrals",fJetsName.Data())); | |
54 | } | |
55 | } | |
56 | ||
57 | //________________________________________________________________________ | |
58 | void AliEsdJetTask::UserExec(Option_t *) | |
59 | { | |
60 | // Main loop, called for each event. | |
61 | ||
62 | // add jets to event if not yet there | |
63 | if (!(InputEvent()->FindListObject(fJetsName))) | |
64 | InputEvent()->AddObject(fJets); | |
65 | ||
66 | AliAnalysisManager *am = AliAnalysisManager::GetAnalysisManager(); | |
67 | TClonesArray *tracks = 0; | |
68 | TClonesArray *clus = 0; | |
69 | TList *l = InputEvent()->GetList(); | |
70 | if ((fType==0)||(fType==1)) { | |
71 | if (fPrimTracksName == "Tracks") | |
72 | am->LoadBranch("Tracks"); | |
73 | tracks = dynamic_cast<TClonesArray*>(l->FindObject(fPrimTracksName)); | |
74 | if (!tracks) { | |
75 | AliError(Form("Pointer to tracks %s == 0", fPrimTracksName.Data() )); | |
76 | return; | |
77 | } | |
78 | } | |
79 | if ((fType==0)||(fType==2)) { | |
80 | if (fCaloName == "CaloClusters") | |
81 | am->LoadBranch("CaloClusters"); | |
82 | clus = dynamic_cast<TClonesArray*>(l->FindObject(fCaloName)); | |
83 | if (!clus) { | |
84 | AliError(Form("Pointer to clus %s == 0", fCaloName.Data() )); | |
85 | return; | |
86 | } | |
87 | if (!(InputEvent()->FindListObject(Form("%s_neutrals",fJetsName.Data())))) | |
88 | InputEvent()->AddObject(fNeutrals); | |
89 | } | |
90 | ||
91 | FindJets(tracks, clus, fAlgo, fRadius); | |
92 | } | |
93 | ||
94 | //________________________________________________________________________ | |
95 | void AliEsdJetTask::Terminate(Option_t *) | |
96 | { | |
97 | // Called once at the end of the analysis. | |
98 | ||
99 | } | |
100 | ||
101 | //________________________________________________________________________ | |
102 | void AliEsdJetTask::FindJets(TObjArray *tracks, TObjArray *clus, Int_t algo, Double_t radius) | |
103 | { | |
104 | // Find jets. | |
105 | ||
106 | TString name("kt"); | |
107 | fastjet::JetAlgorithm jalgo(fastjet::kt_algorithm); | |
108 | if (algo>=1) { | |
109 | name = "antikt"; | |
110 | jalgo = fastjet::antikt_algorithm; | |
111 | } | |
112 | ||
113 | AliFJWrapper fjw(name, name); | |
114 | fjw.SetR(radius); | |
115 | fjw.SetAlgorithm(jalgo); | |
116 | fjw.SetMaxRap(0.9); | |
117 | fjw.Clear(); | |
118 | ||
119 | if (tracks) { | |
120 | const Int_t Ntracks = tracks->GetEntries(); | |
121 | for (Int_t iTracks = 0; iTracks < Ntracks; ++iTracks) { | |
122 | AliESDtrack *t = static_cast<AliESDtrack*>(tracks->At(iTracks)); | |
123 | if (!t) | |
124 | continue; | |
125 | if (fPrimTrCuts && !fPrimTrCuts->IsSelected(t)) | |
126 | continue; | |
127 | fjw.AddInputVector(t->Px(), t->Py(), t->Pz(), t->P(), iTracks); | |
128 | } | |
129 | } | |
130 | if (clus) { | |
131 | Double_t vertex[3] = {0, 0, 0}; | |
132 | InputEvent()->GetPrimaryVertex()->GetXYZ(vertex); | |
133 | const Int_t Nclus = clus->GetEntries(); | |
134 | for (Int_t iClus = 0, iN = 0; iClus < Nclus; ++iClus) { | |
135 | AliESDCaloCluster *c = static_cast<AliESDCaloCluster*>(clus->At(iClus)); | |
136 | if (!c->IsEMCAL()) | |
137 | continue; | |
138 | TLorentzVector nPart; | |
139 | c->GetMomentum(nPart, vertex); | |
140 | Double_t energy = nPart.P(); | |
141 | if (fHadCorr>0) { | |
142 | Int_t imin = static_cast<Int_t>(c->GetEmcCpvDistance()); | |
143 | if (imin>=0) { | |
144 | Double_t dPhiMin = c->GetTrackDx(); | |
145 | Double_t dEtaMin = c->GetTrackDz(); | |
146 | if (dPhiMin<0.05 && dEtaMin<0.025) { | |
147 | AliESDtrack *t = static_cast<AliESDtrack*>(tracks->At(imin)); | |
148 | if (t) { | |
149 | if (!fPrimTrCuts || fPrimTrCuts->IsSelected(t)) { | |
150 | energy -= fHadCorr*t->P(); | |
151 | if (energy<0) | |
152 | continue; | |
153 | } | |
154 | } | |
155 | } | |
156 | } | |
157 | } | |
158 | fjw.AddInputVector(nPart.Px(), nPart.Py(), nPart.Pz(), energy, -iN-1); | |
159 | new ((*fNeutrals)[iN++]) TLorentzVector(nPart); | |
160 | } | |
161 | } | |
162 | ||
163 | fjw.Run(); | |
164 | if (0) { | |
165 | Double_t median = 0; | |
166 | Double_t sigma = 0; | |
167 | fjw.GetMedianAndSigma(median, sigma); | |
168 | } | |
169 | ||
170 | std::vector<fastjet::PseudoJet> jets_incl = fjw.GetInclusiveJets(); | |
171 | for(UInt_t ij=0, jetCount=0; ij<jets_incl.size(); ++ij) { | |
172 | if (jets_incl[ij].perp()<1) | |
173 | continue; | |
174 | AliAODJet *jet = new ((*fJets)[jetCount]) | |
175 | AliAODJet(jets_incl[ij].px(), jets_incl[ij].py(), jets_incl[ij].pz(), jets_incl[ij].E()); | |
176 | jet->SetEffArea(fjw.GetJetArea(ij),0); | |
177 | jet->GetRefTracks()->Clear(); | |
178 | vector<fastjet::PseudoJet> constituents = fjw.GetJetConstituents(ij); | |
179 | Double_t neutralE = 0; | |
180 | for(UInt_t ic=0; ic<constituents.size(); ++ic) { | |
181 | Int_t uid = constituents[ic].user_index(); | |
182 | if (uid>=0) | |
183 | jet->AddTrack(tracks->At(uid)); | |
184 | else { | |
185 | TLorentzVector *nP = static_cast<TLorentzVector*>(fNeutrals->At(-(uid+1))); | |
186 | neutralE += nP->E(); | |
187 | jet->AddTrack(nP); | |
188 | } | |
189 | } | |
190 | jet->SetNEF(neutralE/jet->E()); | |
191 | //jet->Print(""); | |
192 | jetCount++; | |
193 | } | |
194 | } | |
195 | #else | |
196 | //________________________________________________________________________ | |
197 | AliEsdJetTask::AliEsdJetTask(const char *name) : | |
198 | AliAnalysisTaskSE("AliEsdJetTask"), | |
199 | fPrimTrCuts(0), | |
200 | fPrimTracksName("Tracks"), | |
201 | fJetsName("Jets"), | |
202 | fCaloName("CaloClusters"), | |
203 | fAlgo(1), | |
204 | fRadius(0.4), | |
205 | fType(0), | |
206 | fHadCorr(0), | |
207 | fJets(0), | |
208 | fNeutrals(0) | |
209 | { | |
210 | // Standard constructor. | |
211 | AliFatal("Compiled without FASTJET package. Task cannot be used!"); | |
212 | } | |
213 | ||
214 | //________________________________________________________________________ | |
215 | AliEsdJetTask::~AliEsdJetTask() | |
216 | { | |
217 | // Destructor | |
218 | } | |
219 | ||
220 | //________________________________________________________________________ | |
221 | void AliEsdJetTask::UserCreateOutputObjects() | |
222 | { | |
223 | // Create user objects. | |
224 | } | |
225 | ||
226 | //________________________________________________________________________ | |
227 | void AliEsdJetTask::UserExec(Option_t *) | |
228 | { | |
229 | } | |
230 | ||
231 | //________________________________________________________________________ | |
232 | void AliEsdJetTask::Terminate(Option_t *) | |
233 | { | |
234 | // Called once at the end of the analysis. | |
235 | } | |
236 | ||
237 | //________________________________________________________________________ | |
238 | void AliEsdJetTask::FindJets(TObjArray *, TObjArray *, Int_t, Double_t) | |
239 | { | |
240 | // Find jets. | |
241 | } | |
242 | #endif |