]> git.uio.no Git - u/mrichter/AliRoot.git/blame - PWGJE/EMCALJetTasks/AliAnalysisTaskEmcalJet.cxx
update task with other flag to select 2D binning and to change some other analysis...
[u/mrichter/AliRoot.git] / PWGJE / EMCALJetTasks / AliAnalysisTaskEmcalJet.cxx
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8628b70c 1// $Id$
a546db49 2//
3// Emcal jet analysis base task.
4//
5// Author: S.Aiola
6
7#include "AliAnalysisTaskEmcalJet.h"
8
a546db49 9#include <TChain.h>
10#include <TClonesArray.h>
11#include <TList.h>
8f3e275e 12#include <TObject.h>
a546db49 13
a546db49 14#include "AliAnalysisManager.h"
15#include "AliCentrality.h"
8f3e275e 16#include "AliEMCALGeometry.h"
17#include "AliESDEvent.h"
a546db49 18#include "AliEmcalJet.h"
a546db49 19#include "AliLog.h"
e2c9f708 20#include "AliRhoParameter.h"
8f3e275e 21#include "AliVCluster.h"
22#include "AliVEventHandler.h"
23#include "AliVParticle.h"
a546db49 24
25ClassImp(AliAnalysisTaskEmcalJet)
26
27//________________________________________________________________________
28AliAnalysisTaskEmcalJet::AliAnalysisTaskEmcalJet() :
29 AliAnalysisTaskEmcal("AliAnalysisTaskEmcalJet"),
30 fJetRadius(0.4),
e2c9f708 31 fJetsName(),
a487deae 32 fRhoName(),
33 fPtBiasJetTrack(0),
34 fPtBiasJetClus(0),
a546db49 35 fJetPtCut(1),
1b4db73a 36 fJetAreaCut(-1),
a487deae 37 fPercAreaCut(-1),
38 fAreaEmcCut(0),
39 fJetMinEta(-0.9),
40 fJetMaxEta(0.9),
41 fJetMinPhi(-10),
42 fJetMaxPhi(10),
411b11e0 43 fMaxClusterPt(100),
44 fMaxTrackPt(100),
83888eef 45 fLeadingHadronType(0),
63fac07f 46 fNLeadingJets(1),
2103dc6a 47 fJetBitMap(0),
a487deae 48 fJets(0),
49 fRho(0),
50 fRhoVal(0)
a546db49 51{
52 // Default constructor.
53}
54
a546db49 55//________________________________________________________________________
56AliAnalysisTaskEmcalJet::AliAnalysisTaskEmcalJet(const char *name, Bool_t histo) :
57 AliAnalysisTaskEmcal(name, histo),
58 fJetRadius(0.4),
e2c9f708 59 fJetsName(),
a487deae 60 fRhoName(),
61 fPtBiasJetTrack(0),
62 fPtBiasJetClus(0),
a546db49 63 fJetPtCut(1),
1b4db73a 64 fJetAreaCut(-1),
a487deae 65 fPercAreaCut(-1),
66 fAreaEmcCut(0),
67 fJetMinEta(-0.9),
68 fJetMaxEta(0.9),
69 fJetMinPhi(-10),
70 fJetMaxPhi(10),
411b11e0 71 fMaxClusterPt(100),
72 fMaxTrackPt(100),
83888eef 73 fLeadingHadronType(0),
63fac07f 74 fNLeadingJets(1),
2103dc6a 75 fJetBitMap(0),
a487deae 76 fJets(0),
77 fRho(0),
78 fRhoVal(0)
a546db49 79{
80 // Standard constructor.
81}
82
83//________________________________________________________________________
84AliAnalysisTaskEmcalJet::~AliAnalysisTaskEmcalJet()
85{
86 // Destructor
87}
88
2bddb6ae 89//________________________________________________________________________
90Bool_t AliAnalysisTaskEmcalJet::AcceptBiasJet(AliEmcalJet *jet) const
91{
76bc10fe 92 // Accept jet with a bias.
93
83888eef 94 if (fLeadingHadronType == 0) {
95 if (jet->MaxTrackPt() < fPtBiasJetTrack) return kFALSE;
96 }
97 else if (fLeadingHadronType == 1) {
98 if (jet->MaxClusterPt() < fPtBiasJetClus) return kFALSE;
99 }
100 else {
101 if (jet->MaxTrackPt() < fPtBiasJetTrack && jet->MaxClusterPt() < fPtBiasJetClus) return kFALSE;
102 }
103
104 return kTRUE;
105}
106
107//________________________________________________________________________
108Float_t* AliAnalysisTaskEmcalJet::GenerateFixedBinArray(Int_t n, Float_t min, Float_t max) const
109{
110 Float_t *bins = new Float_t[n+1];
111
112 Float_t binWidth = (max-min)/n;
113 bins[0] = min;
114 for (Int_t i = 1; i <= n; i++) {
115 bins[i] = bins[i-1]+binWidth;
116 }
117
118 return bins;
119}
120
121//________________________________________________________________________
122Double_t AliAnalysisTaskEmcalJet::GetLeadingHadronPt(AliEmcalJet *jet) const
123{
124 if (fLeadingHadronType == 0) // charged leading hadron
125 return jet->MaxTrackPt();
126 else if (fLeadingHadronType == 1) // neutral leading hadron
127 return jet->MaxClusterPt();
128 else // charged or neutral
129 return jet->MaxPartPt();
2bddb6ae 130}
131
a546db49 132//________________________________________________________________________
a487deae 133Bool_t AliAnalysisTaskEmcalJet::AcceptJet(AliEmcalJet *jet) const
a546db49 134{
135 // Return true if jet is accepted.
2103dc6a 136 if (!jet)
137 return kFALSE;
138
139 if (jet->TestBits(fJetBitMap) != (Int_t)fJetBitMap)
140 return kFALSE;
a546db49 141
ca5c29fa 142 if (jet->Pt() <= fJetPtCut)
a546db49 143 return kFALSE;
ca5c29fa 144
145 if (jet->Area() <= fJetAreaCut)
a546db49 146 return kFALSE;
ca5c29fa 147
a487deae 148 if (jet->AreaEmc()<fAreaEmcCut)
a546db49 149 return kFALSE;
ca5c29fa 150
a487deae 151 if (!AcceptBiasJet(jet))
152 return kFALSE;
ca5c29fa 153
a487deae 154 if (jet->MaxTrackPt() > fMaxTrackPt || jet->MaxClusterPt() > fMaxClusterPt)
411b11e0 155 return kFALSE;
a546db49 156
6f18d73a 157 Double_t jetPhi = jet->Phi();
158 Double_t jetEta = jet->Eta();
159
160 if (fJetMinPhi < 0) // if limits are given in (-pi, pi) range
161 jetPhi -= TMath::Pi() * 2;
162
163 return (Bool_t)(jetEta > fJetMinEta && jetEta < fJetMaxEta && jetPhi > fJetMinPhi && jetPhi < fJetMaxPhi);
1f6fff78 164}
165
e2c9f708 166//________________________________________________________________________
167AliRhoParameter *AliAnalysisTaskEmcalJet::GetRhoFromEvent(const char *name)
168{
169 // Get rho from event.
170
171 AliRhoParameter *rho = 0;
172 TString sname(name);
173 if (!sname.IsNull()) {
174 rho = dynamic_cast<AliRhoParameter*>(InputEvent()->FindListObject(sname));
175 if (!rho) {
176 AliWarning(Form("%s: Could not retrieve rho with name %s!", GetName(), name));
177 return 0;
178 }
179 }
180 return rho;
181}
182
1f6fff78 183//________________________________________________________________________
abc24170 184void AliAnalysisTaskEmcalJet::ExecOnce()
1f6fff78 185{
186 // Init the analysis.
187
a487deae 188 AliAnalysisTaskEmcal::ExecOnce();
189
a5621834 190 if (fPercAreaCut >= 0) {
60b1665c 191 if (fJetAreaCut >= 0)
192 AliInfo(Form("%s: jet area cut will be calculated as a percentage of the average area, given value will be overwritten", GetName()));
a5621834 193 fJetAreaCut = fPercAreaCut * fJetRadius * fJetRadius * TMath::Pi();
194 }
1b4db73a 195 if (fJetAreaCut < 0)
196 fJetAreaCut = 0;
a5621834 197
1f6fff78 198 if (fAnaType == kTPC) {
a487deae 199 SetJetEtaLimits(-0.5, 0.5);
200 SetJetPhiLimits(-10, 10);
a487deae 201 }
202 else if (fAnaType == kEMCAL && fGeom) {
203 SetJetEtaLimits(fGeom->GetArm1EtaMin() + fJetRadius, fGeom->GetArm1EtaMax() - fJetRadius);
204 SetJetPhiLimits(fGeom->GetArm1PhiMin() * TMath::DegToRad() + fJetRadius, fGeom->GetArm1PhiMax() * TMath::DegToRad() - fJetRadius);
a487deae 205 }
206
207 if (!fRhoName.IsNull() && !fRho) {
208 fRho = dynamic_cast<AliRhoParameter*>(InputEvent()->FindListObject(fRhoName));
209 if (!fRho) {
210 AliError(Form("%s: Could not retrieve rho %s!", GetName(), fRhoName.Data()));
211 fInitialized = kFALSE;
212 return;
213 }
214 }
215
216 if (!fJetsName.IsNull() && !fJets) {
217 fJets = dynamic_cast<TClonesArray*>(InputEvent()->FindListObject(fJetsName));
218 if (!fJets) {
219 AliError(Form("%s: Could not retrieve jets %s!", GetName(), fJetsName.Data()));
220 fInitialized = kFALSE;
221 return;
e44e8726 222 }
a487deae 223 else if (!fJets->GetClass()->GetBaseClass("AliEmcalJet")) {
224 AliError(Form("%s: Collection %s does not contain AliEmcalJet objects!", GetName(), fJetsName.Data()));
225 fJets = 0;
226 fInitialized = kFALSE;
227 return;
1f6fff78 228 }
1f6fff78 229 }
a487deae 230}
1f6fff78 231
a487deae 232//________________________________________________________________________
ca5c29fa 233Bool_t AliAnalysisTaskEmcalJet::GetSortedArray(Int_t indexes[], TClonesArray *array, Double_t rho) const
a487deae 234{
235 // Get the leading jets.
abc24170 236
ca5c29fa 237 static Float_t pt[9999] = {0};
a487deae 238
239 if (!array)
240 return 0;
241
242 const Int_t n = array->GetEntriesFast();
243
9f52c61f 244 if (n < 1)
ca5c29fa 245 return kFALSE;
9f52c61f 246
247 if (array->GetClass()->GetBaseClass("AliEmcalJet")) {
a487deae 248
249 for (Int_t i = 0; i < n; i++) {
250
251 pt[i] = -FLT_MAX;
252
253 AliEmcalJet* jet = static_cast<AliEmcalJet*>(array->At(i));
254
255 if (!jet) {
256 AliError(Form("Could not receive jet %d", i));
257 continue;
258 }
259
260 if (!AcceptJet(jet))
261 continue;
262
ca5c29fa 263 pt[i] = jet->Pt() - rho * jet->Area();
a487deae 264 }
265 }
266
9f52c61f 267 else if (array->GetClass()->GetBaseClass("AliVTrack")) {
a487deae 268
269 for (Int_t i = 0; i < n; i++) {
270
271 pt[i] = -FLT_MAX;
272
273 AliVTrack* track = static_cast<AliVTrack*>(array->At(i));
274
275 if (!track) {
276 AliError(Form("Could not receive track %d", i));
277 continue;
278 }
279
280 if (!AcceptTrack(track))
281 continue;
282
283 pt[i] = track->Pt();
284 }
285 }
286
9f52c61f 287 else if (array->GetClass()->GetBaseClass("AliVCluster")) {
a487deae 288
289 for (Int_t i = 0; i < n; i++) {
290
291 pt[i] = -FLT_MAX;
292
293 AliVCluster* cluster = static_cast<AliVCluster*>(array->At(i));
294
295 if (!cluster) {
296 AliError(Form("Could not receive cluster %d", i));
297 continue;
298 }
299
300 if (!AcceptCluster(cluster))
301 continue;
302
303 TLorentzVector nPart;
304 cluster->GetMomentum(nPart, const_cast<Double_t*>(fVertex));
305
306 pt[i] = nPart.Pt();
307 }
308 }
309
310 TMath::Sort(n, pt, indexes);
311
312 if (pt[indexes[0]] == -FLT_MAX)
313 return 0;
314
ca5c29fa 315 return kTRUE;
1f6fff78 316}
317
318//________________________________________________________________________
76bc10fe 319Bool_t AliAnalysisTaskEmcalJet::IsJetCluster(AliEmcalJet* jet, Int_t iclus, Bool_t sorted) const
320{
321 // Return true if cluster is in jet.
322
323 for (Int_t i = 0; i < jet->GetNumberOfClusters(); ++i) {
324 Int_t ijetclus = jet->ClusterAt(i);
325 if (sorted && ijetclus > iclus)
326 return kFALSE;
327 if (ijetclus == iclus)
328 return kTRUE;
329 }
330 return kFALSE;
331}
332
333//________________________________________________________________________
334Bool_t AliAnalysisTaskEmcalJet::IsJetTrack(AliEmcalJet* jet, Int_t itrack, Bool_t sorted) const
335{
336 // Return true if track is in jet.
337
338 for (Int_t i = 0; i < jet->GetNumberOfTracks(); ++i) {
339 Int_t ijettrack = jet->TrackAt(i);
340 if (sorted && ijettrack > itrack)
341 return kFALSE;
342 if (ijettrack == itrack)
343 return kTRUE;
344 }
345 return kFALSE;
346}
347
348//________________________________________________________________________
349Bool_t AliAnalysisTaskEmcalJet::RetrieveEventObjects()
1f6fff78 350{
76bc10fe 351 // Retrieve objects from event.
1f6fff78 352
76bc10fe 353 if (!AliAnalysisTaskEmcal::RetrieveEventObjects())
354 return kFALSE;
355
a487deae 356 if (fRho)
357 fRhoVal = fRho->GetVal();
76bc10fe 358
359 return kTRUE;
a546db49 360}