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43d6f3d4 | 1 | // -*- C++ -*- |
2 | /************************************************************************** | |
3 | * Copyright(c) 2012, ALICE Experiment at CERN, All rights reserved. * | |
4 | * * | |
5 | * Author: The ALICE Off-line Project. * | |
6 | * Contributors are mentioned in the code where appropriate. * | |
7 | * * | |
8 | * Permission to use, copy, modify and distribute this software and its * | |
9 | * documentation strictly for non-commercial purposes is hereby granted * | |
10 | * without fee, provided that the above copyright notice appears in all * | |
11 | * copies and that both the copyright notice and this permission notice * | |
12 | * appear in the supporting documentation. The authors make no claims * | |
13 | * about the suitability of this software for any purpose. It is * | |
14 | * provided "as is" without express or implied warranty. * | |
15 | **************************************************************************/ | |
e474b5d3 | 16 | // $Id: AliAnalysisTaskLongRangeCorrelations.cxx 407 2014-03-21 11:55:57Z cmayer $ |
43d6f3d4 | 17 | |
18 | #include <numeric> | |
19 | #include <functional> | |
20 | #include <set> | |
21 | ||
22 | #include <TChain.h> | |
23 | #include <THashList.h> | |
24 | #include <THnSparse.h> | |
25 | #include <TH1.h> | |
26 | #include <TH2.h> | |
27 | #include <TH3.h> | |
28 | ||
29 | #include "AliEventPoolManager.h" | |
30 | #include "AliAnalysisManager.h" | |
31 | #include "AliAODEvent.h" | |
32 | #include "AliAODMCHeader.h" | |
33 | #include "AliAODMCParticle.h" | |
34 | #include "AliMCEvent.h" | |
35 | #include "AliInputEventHandler.h" | |
36 | #include "AliLog.h" | |
37 | #include "AliTHn.h" | |
38 | ||
39 | #include "AliMCEventHandler.h" | |
40 | #include "AliMCEvent.h" | |
41 | #include "AliStack.h" | |
42 | #include "AliAnalysisTaskLongRangeCorrelations.h" | |
43 | ||
44 | ||
45 | ClassImp(AliAnalysisTaskLongRangeCorrelations); | |
46 | ClassImp(LRCParticle); | |
47 | ||
48 | AliAnalysisTaskLongRangeCorrelations::AliAnalysisTaskLongRangeCorrelations(const char *name) | |
49 | : AliAnalysisTaskSE(name) | |
50 | , fOutputList(NULL) | |
51 | , fVertexZ(NULL) | |
52 | , fRunMixing(kFALSE) | |
53 | , fPoolMgr(NULL) | |
54 | , fMixingTracks(50000) | |
55 | , fTrackFilter(128) | |
56 | , fCentMin(0), fCentMax(20) | |
57 | , fPtMin(0.2), fPtMax(1e10) | |
58 | , fPhiMin(0.), fPhiMax(TMath::TwoPi()) | |
59 | , fMaxAbsVertexZ(10.) | |
60 | , fSelectPrimaryMCParticles(0) | |
61 | , fSelectPrimaryMCDataParticles(0) | |
62 | , fNMin(-1) | |
63 | , fNMax(-1) | |
a742e0d7 | 64 | , fDeltaEta(-1) |
43d6f3d4 | 65 | , fnBinsCent( 220), fnBinsPt(400), fnBinsPhi(4), fnBinsEta(120) |
66 | , fxMinCent( -5.0), fxMinPt( 0.0), fxMinPhi( 0.0), fxMinEta(-1.5) | |
67 | , fxMaxCent(105.0), fxMaxPt( 4.0), fxMaxPhi( TMath::TwoPi()), fxMaxEta( 1.5) { | |
68 | DefineInput(0, TChain::Class()); | |
69 | DefineOutput(1, TList::Class()); | |
70 | } | |
71 | ||
72 | AliAnalysisTaskLongRangeCorrelations::~AliAnalysisTaskLongRangeCorrelations() { | |
73 | if (NULL != fOutputList) { | |
74 | delete fOutputList; | |
75 | fOutputList = NULL; | |
76 | } | |
77 | } | |
78 | ||
79 | void AliAnalysisTaskLongRangeCorrelations::UserCreateOutputObjects() { | |
80 | fOutputList = new THashList; | |
81 | fOutputList->SetOwner(kTRUE); | |
82 | fOutputList->SetName(GetOutputListName()); | |
83 | ||
84 | const Double_t vertexBins[] = { // Zvtx bins | |
85 | -10., -7., -5., -3., -1., 1., 3., 5., 7., 10. | |
86 | }; | |
87 | const Int_t nVertexBins(sizeof(vertexBins)/sizeof(Double_t)-1); | |
88 | fVertexZ = new TAxis(nVertexBins, vertexBins); | |
89 | fVertexZ->SetName("VertexZAxis"); | |
90 | fOutputList->Add(fVertexZ); | |
91 | ||
92 | fOutputList->Add(new TH1D("histVertexZ", ";vertex Z (cm)", nVertexBins, vertexBins)); | |
93 | ||
94 | // Event statistics | |
95 | const char* eventStatLabels[] = { | |
96 | "All Events", | |
97 | "Physics Selection", | |
98 | "Centrality Selection", | |
99 | "Vertex Selection", | |
100 | "Analyzed Events" | |
101 | }; | |
102 | const size_t nEventStat(sizeof(eventStatLabels)/sizeof(const char*)); | |
103 | TH1* hStats(new TH1D("histEventStats", "histEventStats", nEventStat, -0.5, nEventStat-0.5)); | |
104 | for (size_t i(0); i<nEventStat; ++i) | |
105 | hStats->GetXaxis()->SetBinLabel(1+i, eventStatLabels[i]); | |
106 | fOutputList->Add(hStats); | |
107 | ||
108 | // QA histograms | |
109 | fOutputList->Add(new TH2D("histQACentrality", ";centrality V0M(%);selected;", | |
110 | fnBinsCent,fxMinCent,fxMaxCent, 2, -0.5, 1.5)); | |
111 | fOutputList->Add(new TH2D("histQAVertexZ", ";vertex-z (cm);selected;", | |
112 | 800, -40., 40., 2, -0.5, 1.5)); | |
113 | fOutputList->Add(new TH1D("histQAMultiplicityBeforeCuts", | |
114 | ";tracks", 10000, 0, 10000)); | |
115 | fOutputList->Add(new TH1D("histQAMultiplicityAfterCuts", | |
116 | ";selected tracks", 10000, 0, 10000)); | |
117 | fOutputList->Add(new TH3D("histQACentPt", ";charge;centrality V0M(%);p_{T} (GeV/c)", | |
118 | 2, -0.5, 1.5, fnBinsCent, fxMinCent, fxMaxCent, fnBinsPt, fxMinPt, fxMaxPt)); | |
119 | fOutputList->Add(new TH3D("histQAPhiEta", ";charge;#phi (rad);#eta", | |
120 | 2, -0.5, 1.5, 200, 0.0, TMath::TwoPi(), 300, -1.5, 1.5)); | |
121 | ||
122 | // N(eta) distributions with different binnings | |
123 | fOutputList->Add(new TH2D("histNEta_120", ";#eta;N", 120, -1.5, 1.5, 1000, -.5, 1000-.5)); // 0.025 | |
124 | fOutputList->Add(new TH2D("histNEta__60", ";#eta;N", 60, -1.5, 1.5, 1000, -.5, 1000-.5)); // 0.05 | |
125 | fOutputList->Add(new TH2D("histNEta__30", ";#eta;N", 30, -1.5, 1.5, 1000, -.5, 1000-.5)); // 0.1 | |
126 | fOutputList->Add(new TH2D("histNEta__15", ";#eta;N", 15, -1.5, 1.5, 1000, -.5, 1000-.5)); // 0.2 | |
127 | ||
128 | // Moments | |
129 | fOutputList->Add(MakeHistPhiEta("histMoment1PhiEta_1")); | |
130 | if (fRunMixing) | |
131 | fOutputList->Add(MakeHistPhiEta("histMoment1PhiEta_2")); | |
132 | fOutputList->Add(MakeHistPhiEtaPhiEta("histMoment2PhiEtaPhiEta_11")); | |
133 | if (fRunMixing) { | |
134 | fOutputList->Add(MakeHistPhiEtaPhiEta("histMoment2PhiEtaPhiEta_12")); | |
135 | fOutputList->Add(MakeHistPhiEtaPhiEta("histMoment2PhiEtaPhiEta_22")); | |
136 | } | |
137 | ||
138 | // add MC Histograms | |
139 | const Int_t N(fOutputList->GetEntries()); | |
140 | for (Int_t i(0); i<N; ++i) | |
141 | fOutputList->Add(fOutputList->At(i)->Clone(TString("MC_") + fOutputList->At(i)->GetName())); | |
142 | ||
143 | if (fRunMixing) | |
144 | SetupForMixing(); | |
145 | ||
146 | PostData(1, fOutputList); | |
147 | } | |
148 | ||
149 | void AliAnalysisTaskLongRangeCorrelations::UserExec(Option_t* ) { | |
150 | AliAnalysisManager* pManager(AliAnalysisManager::GetAnalysisManager()); | |
151 | if (NULL == pManager) return; | |
152 | ||
153 | AliInputEventHandler* pInputHandler(dynamic_cast<AliInputEventHandler*>(pManager->GetInputEventHandler())); | |
154 | if (NULL == pInputHandler) return; | |
155 | ||
156 | AliAODEvent* pAOD(dynamic_cast<AliAODEvent*>(InputEvent())); | |
157 | if (NULL == pAOD) return; | |
158 | ||
159 | AliAODHeader *pAODHeader = pAOD->GetHeader(); | |
160 | if (NULL == pAODHeader) return; | |
161 | ||
162 | AliAODMCHeader *pAODMCHeader(dynamic_cast<AliAODMCHeader*>(pAOD->FindListObject(AliAODMCHeader::StdBranchName()))); | |
163 | const Bool_t isMC(NULL != pAODMCHeader); | |
164 | ||
165 | TClonesArray *arrayMC(NULL); | |
166 | if (isMC) { | |
167 | arrayMC = dynamic_cast<TClonesArray*>(pAOD->GetList()->FindObject(AliAODMCParticle::StdBranchName())); | |
168 | if (NULL == arrayMC) return; | |
169 | } | |
170 | ||
171 | // --- event cuts MC --- | |
172 | if (isMC) { | |
173 | Fill("MC_histEventStats", 0.); // all events | |
174 | Fill("MC_histEventStats", 1.); // events passing physics selection | |
175 | } | |
176 | ||
177 | // --- event cuts data --- | |
178 | Fill("histEventStats", 0.); // all events | |
179 | ||
180 | // physics selection | |
181 | if (!pInputHandler->IsEventSelected()) return; | |
182 | Fill("histEventStats", 1.); // events passing physics selection | |
183 | ||
184 | // centrality selection | |
185 | const Double_t centrality(pAODHeader->GetCentralityP()->GetCentralityPercentile("V0M")); | |
186 | AliDebug(3, Form("centrality=%f", centrality)); | |
187 | const Bool_t centralitySelected(centrality > fCentMin && centrality < fCentMax); | |
188 | Fill("histQACentrality", centrality, centralitySelected); | |
189 | if (!centralitySelected) return; | |
190 | Fill("histEventStats", 2.); // events passing centrality selection | |
191 | if (isMC) | |
192 | Fill("MC_histEventStats", 2.); // events passing centrality selection | |
193 | ||
194 | // vertex selection -- data | |
195 | const Int_t nVertex(pAOD->GetNumberOfVertices()); | |
196 | if (0 == nVertex) return; | |
197 | const AliAODVertex* pVertex(pAOD->GetPrimaryVertex()); | |
198 | if (NULL == pVertex) return; | |
199 | const Int_t nTracksPrimary(pVertex->GetNContributors()); | |
200 | if (nTracksPrimary < 1) return; | |
201 | ||
202 | const Double_t zVertex(pVertex->GetZ()); | |
203 | const Bool_t vertexSelectedData(TMath::Abs(zVertex) < fMaxAbsVertexZ); | |
204 | ||
205 | // vertex selection -- MC | |
206 | Bool_t vertexSelectedMC(kTRUE); | |
207 | if (isMC) | |
208 | vertexSelectedMC = (TMath::Abs(pAODMCHeader->GetVtxZ()) < fMaxAbsVertexZ); | |
209 | ||
210 | // combined vertex selection (data and MC) | |
211 | const Bool_t vertexSelected(vertexSelectedData && vertexSelectedMC); | |
212 | Fill("histQAVertexZ", zVertex, vertexSelected); | |
213 | if (isMC) | |
214 | Fill("MC_histQAVertexZ", pAODMCHeader->GetVtxZ(), vertexSelected); | |
215 | if (!vertexSelected) return; | |
216 | Fill("histEventStats", 3.); // events passing vertex selection | |
217 | if (isMC) | |
218 | Fill("MC_histEventStats", 3.); // events passing vertex selection | |
219 | ||
220 | // ------------------ | |
221 | // event is accepted | |
222 | // ------------------ | |
223 | ||
224 | TObjArray* tracksMain(GetAcceptedTracks(pAOD, arrayMC, centrality)); | |
225 | Fill("histQAMultiplicityBeforeCuts", pAOD->GetNumberOfTracks()); | |
226 | Fill("histQAMultiplicityAfterCuts", tracksMain->GetEntriesFast()); | |
227 | ||
228 | if (fRunMixing) { | |
229 | AliEventPool* pEventPool(fPoolMgr->GetEventPool(centrality, pAOD->GetPrimaryVertex()->GetZ())); | |
230 | if (NULL == pEventPool) | |
231 | AliFatal(Form("No pool found for centrality = %f, zVtx = %f", centrality, pAOD->GetPrimaryVertex()->GetZ())); | |
232 | ||
233 | // pEventPool->PrintInfo(); | |
234 | if (pEventPool->IsReady() | |
235 | || pEventPool->NTracksInPool() > fMixingTracks/10 | |
236 | || pEventPool->GetCurrentNEvents() >= 5) { | |
237 | Fill("histEventStats", 4.); // analyzed events | |
238 | Fill("histVertexZ", zVertex); | |
239 | const Int_t nMix(pEventPool->GetCurrentNEvents()); | |
240 | for (Int_t i(0); i<nMix; ++i) { | |
241 | TObjArray* tracksMixed(pEventPool->GetEvent(i)); | |
242 | CalculateMoments("", tracksMain, tracksMixed, zVertex, 1./nMix); | |
243 | } | |
244 | } | |
245 | // Update the Event pool | |
246 | pEventPool->UpdatePool(tracksMain); | |
247 | } else { // no mixing | |
248 | Fill("histEventStats", 4.); // analyzed events | |
249 | Fill("histVertexZ", zVertex); | |
250 | CalculateMoments("", tracksMain, tracksMain, zVertex, 1.); | |
251 | delete tracksMain; | |
252 | } | |
253 | ||
254 | if (isMC) { | |
255 | TObjArray* tracksMC(GetAcceptedTracks(arrayMC, centrality)); | |
256 | const Double_t x[2] = { | |
2942f542 | 257 | static_cast<Double_t>(arrayMC->GetEntriesFast()), |
258 | static_cast<Double_t>(tracksMC->GetEntriesFast()) | |
43d6f3d4 | 259 | }; |
260 | Fill("MC_histQAMultiplicity", x); | |
261 | Fill("MC_histEventStats", 4.); // analyzed MC events | |
262 | Fill("MC_histVertexZ", pAOD->GetPrimaryVertex()->GetZ()); | |
263 | CalculateMoments("MC_", tracksMC, tracksMC, zVertex, 1.); | |
264 | delete tracksMC; | |
265 | } | |
266 | } | |
267 | ||
268 | void AliAnalysisTaskLongRangeCorrelations::Terminate(Option_t* ) { | |
269 | // | |
270 | fOutputList = dynamic_cast<TList*>(GetOutputData(1)); | |
271 | if (NULL == fOutputList) { | |
272 | AliFatal("NULL == fOutputList"); | |
273 | return; // needed to avoid coverity warning | |
274 | } | |
275 | } | |
276 | ||
277 | TString AliAnalysisTaskLongRangeCorrelations::GetOutputListName() const { | |
278 | TString listName("listLRC"); | |
279 | listName += TString::Format("_%smix", fRunMixing ? "" : "no"); | |
280 | listName += TString::Format("_trackFilt%d", fTrackFilter); | |
281 | listName += TString::Format("_cent%.0fT%.0f", fCentMin, fCentMax); | |
282 | listName += TString::Format("_ptMin%.0fMeV", 1e3*fPtMin); | |
283 | listName += TString::Format("_phi%.0fT%.0f", TMath::RadToDeg()*fPhiMin, TMath::RadToDeg()*fPhiMax); | |
284 | if ( 1 == fSelectPrimaryMCParticles) | |
285 | listName += "_selPrimMC"; | |
286 | if (-1 == fSelectPrimaryMCParticles) | |
287 | listName += "_selNonPrimMC"; | |
288 | if ( 1 == fSelectPrimaryMCDataParticles) | |
289 | listName += "_selPrimMCData"; | |
290 | if (-1 == fSelectPrimaryMCDataParticles) | |
291 | listName += "_selNonPrimMCData"; | |
292 | if (-1 != fNMin) | |
293 | listName += TString::Format("_nMin%d", fNMin); | |
294 | if (-1 != fNMax) | |
295 | listName += TString::Format("_nMax%d", fNMax); | |
a742e0d7 | 296 | if (fDeltaEta >= 0) |
297 | listName += TString::Format("_deltaEta%02.0f", 10*fDeltaEta); | |
43d6f3d4 | 298 | return listName; |
299 | } | |
300 | ||
301 | void AliAnalysisTaskLongRangeCorrelations::SetupForMixing() { | |
302 | const Int_t trackDepth(fMixingTracks); | |
303 | const Int_t poolsize(1000); // Maximum number of events | |
304 | ||
305 | Double_t centralityBins[] = { fCentMin, fCentMax }; | |
306 | const Int_t nCentralityBins(sizeof(centralityBins)/sizeof(Double_t) - 1); | |
307 | ||
308 | fPoolMgr = new AliEventPoolManager(poolsize, trackDepth, | |
309 | nCentralityBins, centralityBins, | |
310 | fVertexZ->GetNbins()+1, | |
311 | const_cast<Double_t*>(fVertexZ->GetXbins()->GetArray())); | |
312 | } | |
313 | ||
314 | THnSparse* AliAnalysisTaskLongRangeCorrelations::MakeHistSparsePhiEta(const char* name) const { | |
315 | const Int_t nVertexZBins=fVertexZ->GetNbins(); | |
316 | const Int_t nBinsM1[] = { fnBinsPhi, fnBinsEta, nVertexZBins }; | |
317 | const Double_t xMinM1[] = { fxMinPhi, fxMinEta, 0.5 }; | |
318 | const Double_t xMaxM1[] = { fxMaxPhi, fxMaxEta, nVertexZBins+0.5 }; | |
319 | const TString title(TString(name) | |
320 | +";#phi;#eta;vertex Z (bin);"); | |
321 | return new THnSparseD(name, title.Data(), 3, nBinsM1, xMinM1, xMaxM1); | |
322 | } | |
323 | ||
324 | AliTHn* AliAnalysisTaskLongRangeCorrelations::MakeHistPhiEta(const char* name) const { | |
325 | const Int_t nVertexZBins=fVertexZ->GetNbins(); | |
326 | const Int_t nBinsM1[] = { fnBinsPhi, fnBinsEta, nVertexZBins }; | |
327 | const Double_t xMinM1[] = { fxMinPhi, fxMinEta, 0.5 }; | |
328 | const Double_t xMaxM1[] = { fxMaxPhi, fxMaxEta, nVertexZBins+0.5 }; | |
329 | const TString title(TString(name) | |
330 | +";#phi;#eta;vertex Z (bin);"); | |
331 | AliTHn* h(new AliTHn(name, title.Data(), 1, 3, nBinsM1)); | |
332 | for (Int_t i=0; i<3; ++i) | |
333 | h->SetBinLimits(i, xMinM1[i], xMaxM1[i]); | |
334 | return h; | |
335 | } | |
336 | ||
337 | AliTHn* AliAnalysisTaskLongRangeCorrelations::MakeHistPhiEtaPhiEta(const char* name) const { | |
338 | const Int_t nVertexZBins=fVertexZ->GetNbins(); | |
339 | const Int_t nBinsM2[] = { fnBinsPhi, fnBinsEta, fnBinsPhi, fnBinsEta, nVertexZBins }; | |
340 | const Double_t xMinM2[] = { fxMinPhi, fxMinEta, fxMinPhi, fxMinEta, 0.5 }; | |
341 | const Double_t xMaxM2[] = { fxMaxPhi, fxMaxEta, fxMaxPhi, fxMaxEta, nVertexZBins+0.5 }; | |
342 | const TString title(TString(name) | |
343 | +";#phi_{1};#eta_{1}" | |
344 | +";#phi_{2};#eta_{2};vertex Z (bin);"); | |
345 | AliTHn* h(new AliTHn(name, title.Data(), 1, 5, nBinsM2)); | |
346 | for (Int_t i=0; i<5; ++i) | |
347 | h->SetBinLimits(i, xMinM2[i], xMaxM2[i]); | |
348 | return h; | |
349 | } | |
350 | ||
351 | TObjArray* AliAnalysisTaskLongRangeCorrelations::GetAcceptedTracks(AliAODEvent* pAOD, | |
352 | TClonesArray* arrayMC, | |
353 | Double_t centrality) { | |
354 | TObjArray* tracks= new TObjArray; | |
355 | tracks->SetOwner(kTRUE); | |
356 | ||
357 | const Long64_t N(pAOD->GetNumberOfTracks()); | |
358 | AliDebug(5, Form("#tracks= %6lld %f", N, centrality)); | |
359 | for (Long64_t i(0); i<N; ++i) { | |
360 | AliAODTrack* pAODTrack(dynamic_cast<AliAODTrack*>(pAOD->GetTrack(i))); | |
361 | if (NULL == pAODTrack) continue; | |
362 | ||
363 | // track filter selection | |
364 | if (!pAODTrack->TestFilterBit(fTrackFilter)) continue; | |
365 | ||
366 | // select only primary tracks | |
367 | if (pAODTrack->GetType() != AliAODTrack::kPrimary) continue; | |
368 | ||
369 | if (NULL != arrayMC) { | |
370 | const Int_t label(pAODTrack->GetLabel()); | |
371 | AliAODMCParticle* mcParticle((label >= 0) | |
372 | ? static_cast<AliAODMCParticle*>(arrayMC->At(label)) | |
373 | : NULL); | |
374 | if (label >=0 && NULL == mcParticle) | |
375 | AliFatal("MC particle not found"); | |
376 | ||
377 | // const Bool_t isPhysicalPrimary(mcParticle->IsPhysicalPrimary()); | |
378 | // Printf("mcParticle->IsPhysicalPrimary() %d", isPhysicalPrimary); | |
379 | ||
380 | switch (fSelectPrimaryMCDataParticles) { | |
381 | case -1: | |
382 | if (label < 0) continue; | |
383 | if (kTRUE == mcParticle->IsPhysicalPrimary()) continue; | |
384 | break; | |
385 | case 0: | |
386 | // NOP, take all tracks | |
387 | break; | |
388 | case 1: | |
389 | if (label < 0) continue; | |
390 | if (kFALSE == mcParticle->IsPhysicalPrimary()) continue; | |
391 | break; | |
392 | default: | |
393 | AliFatal("fSelectPrimaryMCDataParticles != {-1,0,1}"); | |
394 | } | |
395 | } | |
396 | ||
397 | // select only charged tracks | |
398 | if (pAODTrack->Charge() == 0) continue; | |
399 | ||
400 | Fill("histQACentPt", pAODTrack->Charge()>0, centrality, pAODTrack->Pt()); | |
401 | Fill("histQAPhiEta", pAODTrack->Charge()>0, pAODTrack->Phi(), pAODTrack->Eta()); | |
402 | if (pAODTrack->Phi() < fPhiMin || pAODTrack->Phi() > fPhiMax) continue; | |
403 | if (pAODTrack->Pt() < fPtMin || pAODTrack->Pt() > fPtMax) continue; | |
404 | ||
405 | tracks->Add(new LRCParticle(pAODTrack->Eta(), pAODTrack->Phi())); | |
406 | } // next track | |
407 | return tracks; | |
408 | } | |
409 | ||
410 | TObjArray* AliAnalysisTaskLongRangeCorrelations::GetAcceptedTracks(TClonesArray* tracksMC, | |
411 | Double_t centrality) { | |
412 | // for keeping track of MC labels | |
413 | std::set<Int_t> labelSet; | |
414 | ||
415 | TObjArray* tracks= new TObjArray; | |
416 | tracks->SetOwner(kTRUE); | |
417 | ||
418 | const Long64_t N(tracksMC->GetEntriesFast()); | |
419 | AliDebug(5, Form("#tracks= %6lld %f", N, centrality)); | |
420 | for (Long64_t i(0); i<N; ++i) { | |
421 | AliAODMCParticle* pMCTrack(dynamic_cast<AliAODMCParticle*>(tracksMC->At(i))); | |
422 | if (NULL == pMCTrack) continue; | |
423 | ||
424 | // no track filter selection for MC tracks | |
425 | ||
426 | if (labelSet.find(pMCTrack->Label()) != labelSet.end()) { | |
427 | Printf("Duplicate Label= %3d", pMCTrack->Label()); | |
428 | continue; | |
429 | } | |
430 | labelSet.insert(pMCTrack->Label()); | |
431 | ||
432 | // Printf("isPrim = %d", pMCTrack->IsPhysicalPrimary()); | |
433 | ||
434 | switch (fSelectPrimaryMCParticles) { | |
435 | case -1: | |
436 | if (kTRUE == pMCTrack->IsPhysicalPrimary()) continue; | |
437 | break; | |
438 | case 0: | |
439 | // NOP, take all MC tracks | |
440 | break; | |
441 | case 1: | |
442 | if (kFALSE == pMCTrack->IsPhysicalPrimary()) continue; | |
443 | break; | |
444 | default: | |
445 | AliFatal("fSelectPrimaryMCParticles != {-1,0,1}"); | |
446 | } | |
447 | ||
448 | // select only charged tracks | |
449 | if (pMCTrack->Charge() == 0) continue; | |
450 | ||
451 | Fill("MC_histQACentPt", pMCTrack->Charge()>0, centrality, pMCTrack->Pt()); | |
452 | Fill("MC_histQAPhiEta", pMCTrack->Charge()>0, pMCTrack->Phi(), pMCTrack->Eta()); | |
453 | ||
454 | if (pMCTrack->Phi() < fPhiMin || pMCTrack->Phi() > fPhiMax) continue; | |
455 | if (pMCTrack->Pt() < fPtMin || pMCTrack->Pt() > fPtMax) continue; | |
456 | ||
457 | tracks->Add(new LRCParticle(pMCTrack->Eta(), pMCTrack->Phi())); | |
458 | } // next track | |
459 | return tracks; | |
460 | } | |
461 | ||
462 | Bool_t AddTHnSparseToAliTHn(AliTHn* h, THnSparse* hs, Double_t weight) { | |
463 | if (h->GetNVar() != hs->GetNdimensions()) | |
464 | return kFALSE; | |
465 | ||
466 | const size_t nDim(hs->GetNdimensions()); | |
467 | ||
468 | Int_t *coord = new Int_t[nDim]; | |
469 | Double_t *x = new Double_t[nDim]; | |
470 | ||
471 | const Long64_t N(hs->GetNbins()); | |
472 | for (Long64_t i(0); i<N; ++i) { | |
473 | const Double_t n(hs->GetBinContent(i, coord)); | |
474 | for (size_t j=0; j<nDim; ++j) | |
475 | x[j] = hs->GetAxis(j)->GetBinCenter(coord[j]); | |
476 | h->Fill(x, 0, n*weight); | |
477 | } | |
478 | ||
479 | delete[] coord; | |
480 | delete[] x; | |
481 | ||
482 | return kTRUE; | |
483 | } | |
484 | ||
485 | void AliAnalysisTaskLongRangeCorrelations::CalculateMoments(TString prefix, | |
486 | TObjArray* tracks1, | |
487 | TObjArray* tracks2, | |
488 | Double_t vertexZ, | |
489 | Double_t weight) { | |
a742e0d7 | 490 | THnSparse* hN1ForThisEvent(ComputeNForThisEvent(tracks1, "hN1", vertexZ)); |
491 | ||
e474b5d3 | 492 | if (fDeltaEta >= 0) { |
493 | hN1ForThisEvent->GetAxis(1)->SetRangeUser( fDeltaEta/2+0.00001, fDeltaEta/2+0.19999); | |
494 | TH1 *hTemp = hN1ForThisEvent->Projection(0); | |
495 | const Long64_t ncPlus = Long64_t(hTemp->GetEntries()); | |
496 | delete hTemp; | |
497 | ||
498 | hN1ForThisEvent->GetAxis(1)->SetRangeUser(-fDeltaEta/2-0.19999, -fDeltaEta/2-0.00001); | |
499 | hTemp = hN1ForThisEvent->Projection(0); | |
500 | const Long64_t ncMinus = Long64_t(hTemp->GetEntries()); | |
501 | delete hTemp; | |
502 | ||
503 | // restore full axis range | |
504 | hN1ForThisEvent->GetAxis(1)->SetRange(0, -1); | |
a742e0d7 | 505 | |
e474b5d3 | 506 | if (fNMin != -1 && ncPlus < fNMin) return; |
507 | if (fNMax != -1 && ncPlus > fNMax) return; | |
508 | ||
509 | if (fNMin != -1 && ncMinus < fNMin) return; | |
510 | if (fNMax != -1 && ncMinus > fNMax) return; | |
511 | } | |
43d6f3d4 | 512 | |
513 | AliTHn* hN1(dynamic_cast<AliTHn*>(fOutputList->FindObject(prefix+"histMoment1PhiEta_1"))); | |
514 | if (NULL == hN1) return; | |
515 | ||
516 | // <n_1> | |
43d6f3d4 | 517 | AddTHnSparseToAliTHn(hN1,hN1ForThisEvent, weight); |
518 | // hN1->GetGrid(0)->GetGrid()->Add(hN1ForThisEvent, weight); | |
519 | ||
520 | // n(eta) distributions | |
521 | FillNEtaHist(prefix+"histNEta_300", hN1ForThisEvent, weight); | |
522 | FillNEtaHist(prefix+"histNEta_120", hN1ForThisEvent, weight); | |
523 | FillNEtaHist(prefix+"histNEta__30", hN1ForThisEvent, weight); | |
524 | FillNEtaHist(prefix+"histNEta__15", hN1ForThisEvent, weight); | |
525 | ||
526 | TObjArray* hNs(new TObjArray); | |
527 | ||
528 | // <n_1 n_1> | |
529 | hNs->AddAt(hN1ForThisEvent, 0); | |
530 | hNs->AddAt(hN1ForThisEvent, 1); | |
531 | ||
532 | ComputeNXForThisEvent(hNs, prefix+"histMoment2PhiEtaPhiEta_11", vertexZ, weight); | |
533 | ||
534 | if (fRunMixing) { | |
535 | AliTHn* hN2(dynamic_cast<AliTHn*>(fOutputList->FindObject(prefix+"histMoment1PhiEta_2"))); | |
536 | if (NULL == hN2) return; | |
537 | // <n_2> | |
538 | THnSparse* hN2ForThisEvent(ComputeNForThisEvent(tracks2, "hN2", vertexZ)); | |
539 | AddTHnSparseToAliTHn(hN2,hN2ForThisEvent, weight); | |
540 | // hN2->GetGrid(0)->GetGrid()->Add(hN2ForThisEvent, weight); | |
541 | ||
542 | // <n_1 n_2> | |
543 | hNs->AddAt(hN2ForThisEvent, 1); | |
544 | ComputeNXForThisEvent(hNs, prefix+"histMoment2PhiEtaPhiEta_12", vertexZ, weight); | |
545 | ||
546 | // <n_2 n_2> | |
547 | hNs->AddAt(hN2ForThisEvent, 0); | |
548 | ComputeNXForThisEvent(hNs, prefix+"histMoment2PhiEtaPhiEta_22", vertexZ, weight); | |
549 | ||
550 | // clean up | |
551 | delete hN2ForThisEvent; | |
552 | } | |
553 | ||
554 | // clean up | |
555 | delete hNs; | |
556 | delete hN1ForThisEvent; | |
557 | } | |
558 | ||
559 | void AliAnalysisTaskLongRangeCorrelations::FillNEtaHist(TString name, | |
560 | THnSparse* hs, | |
561 | Double_t weight) { | |
562 | ||
563 | TH2* hSum(dynamic_cast<TH2*>(fOutputList->FindObject(name))); | |
564 | if (NULL == hSum) return; | |
565 | ||
566 | TH2* hPerEvent(dynamic_cast<TH2*>(hSum->Clone("hPerEvent"))); | |
567 | if (NULL == hPerEvent) return; | |
568 | hPerEvent->Reset(); | |
569 | ||
570 | TH1* h1PerEvent(hPerEvent->ProjectionX()); | |
571 | ||
572 | // fill h1PerEvent | |
573 | const Long64_t N(hs->GetNbins()); | |
574 | for (Long64_t i(0); i<N; ++i) { | |
575 | Int_t coord[2] = { 0, 0 }; | |
576 | const Double_t n(hs->GetBinContent(i, coord)); | |
577 | const Double_t eta(hs->GetAxis(1)->GetBinCenter(coord[1])); | |
578 | h1PerEvent->Fill(eta, n); | |
579 | } | |
580 | ||
581 | for (Int_t i(1); i<=h1PerEvent->GetNbinsX(); ++i) | |
582 | hPerEvent->Fill(h1PerEvent->GetXaxis()->GetBinCenter(i), | |
583 | h1PerEvent->GetBinContent(i)); | |
584 | ||
585 | hSum->Add(hPerEvent, weight); | |
586 | ||
587 | delete hPerEvent; | |
588 | delete h1PerEvent; | |
589 | } | |
590 | ||
591 | THnSparse* AliAnalysisTaskLongRangeCorrelations::ComputeNForThisEvent(TObjArray* tracks, | |
592 | const char* histName, | |
593 | Double_t vertexZ) const { | |
594 | const Double_t vertexZBin(fVertexZ->FindBin(vertexZ)); | |
595 | THnSparse* hN(MakeHistSparsePhiEta(histName)); | |
596 | const Long64_t nTracks(tracks->GetEntriesFast()); | |
597 | for (Long64_t i(0); i<nTracks; ++i) { | |
598 | const LRCParticle* p(dynamic_cast<LRCParticle*>(tracks->At(i))); | |
599 | if (NULL == p) continue; | |
600 | const Double_t x[] = { p->Phi(), p->Eta(), vertexZBin }; | |
601 | hN->Fill(x); | |
602 | } | |
603 | return hN; | |
604 | } | |
605 | ||
606 | class MultiDimIterator { | |
607 | public: | |
608 | MultiDimIterator(TObjArray* _fHs, Double_t vertexZBin) | |
609 | : fHs(_fHs) | |
610 | , fN(fHs->GetEntriesFast()) | |
611 | , fDims(fN, 0) | |
612 | , fIdxs(fN, 0) | |
613 | , fNs (fN, 0) | |
614 | , fX (2*fN+1, 0) | |
615 | , fj(0) { | |
616 | for (Long64_t i=0; i<fN; ++i) { | |
617 | THnSparse* hNi(reinterpret_cast<THnSparse*>(fHs->At(i))); | |
618 | if (NULL == hNi) | |
619 | AliFatal("NULL == hNi"); | |
620 | fDims[i] = hNi->GetNbins(); | |
621 | AliDebug(3, Form("%lld %s %lld", i, hNi->GetName(), fDims[i])); | |
622 | update(i); | |
623 | } | |
624 | fX[2*fN] = vertexZBin; | |
625 | } | |
626 | ||
627 | const char* ClassName() const { return "MultiDimIterator"; } | |
628 | const Double_t* GetX() const { return &fX.front(); } | |
629 | Double_t GetN() const { // returns the product of all multiplicities | |
630 | return std::accumulate(fNs.begin(), fNs.end(), Double_t(1), std::multiplies<Double_t>()); | |
631 | } | |
632 | Bool_t end() const { return fj == fN; } | |
633 | ||
634 | MultiDimIterator& operator++() { | |
635 | Long64_t j(0); | |
636 | for (; j<fN; ++j) { | |
637 | ++fIdxs[j]; | |
638 | update(j); | |
639 | if (fIdxs[j] < fDims[j]) break; | |
640 | fIdxs[j] = 0; | |
641 | update(j); | |
642 | } | |
643 | fj = j; | |
644 | return *this; | |
645 | } | |
646 | ||
647 | protected: | |
648 | void update(Long64_t j) { | |
649 | THnSparse* hs(reinterpret_cast<THnSparse*>(fHs->At(j))); | |
650 | Int_t coord[] = { 0, 0 }; | |
651 | fNs[j] = hs->GetBinContent(fIdxs[j], coord); | |
652 | for (Int_t k(0); k<2; ++k) | |
653 | fX[2*j+k] = hs->GetAxis(k)->GetBinCenter(coord[k]); | |
654 | } | |
655 | private: | |
656 | MultiDimIterator(const MultiDimIterator&); | |
657 | MultiDimIterator& operator=(const MultiDimIterator&); | |
658 | ||
659 | TObjArray* fHs; // array of THnSparse histograms | |
660 | const Long64_t fN; // number of histograms | |
661 | std::vector<Long64_t> fDims; // number of filled bins for each THnSparse | |
662 | std::vector<Long64_t> fIdxs; // indices | |
663 | std::vector<Double_t> fNs; // number of tracks | |
664 | std::vector<Double_t> fX; // coordinate | |
665 | Long64_t fj; // state | |
666 | } ; | |
667 | ||
668 | void AliAnalysisTaskLongRangeCorrelations::ComputeNXForThisEvent(TObjArray* hNs, | |
669 | const char* histName, | |
670 | Double_t vertexZ, | |
671 | Double_t weight) { | |
672 | if (NULL == fOutputList) return; | |
673 | ||
674 | AliTHn* hs(dynamic_cast<AliTHn*>(fOutputList->FindObject(histName))); | |
675 | if (hs == NULL) return; | |
676 | ||
677 | for (MultiDimIterator mdi(hNs, fVertexZ->FindBin(vertexZ)); !mdi.end(); ++mdi) | |
678 | hs->Fill(mdi.GetX(), 0, mdi.GetN()*weight); | |
679 | ||
680 | // hs->FillParent(); | |
681 | } | |
682 | ||
683 | void AliAnalysisTaskLongRangeCorrelations::Fill(const char* histName, Double_t x) { | |
684 | if (NULL == fOutputList) return; | |
685 | TH1* h = dynamic_cast<TH1*>(fOutputList->FindObject(histName)); | |
686 | if (h == NULL) return; | |
687 | h->Fill(x); | |
688 | } | |
689 | void AliAnalysisTaskLongRangeCorrelations::Fill(const char* histName, Double_t x, Double_t y) { | |
690 | if (NULL == fOutputList) return; | |
691 | TH2* h = dynamic_cast<TH2*>(fOutputList->FindObject(histName)); | |
692 | if (h == NULL) return; | |
693 | h->Fill(x, y); | |
694 | } | |
695 | void AliAnalysisTaskLongRangeCorrelations::Fill(const char* histName, Double_t x, Double_t y, Double_t z) { | |
696 | if (NULL == fOutputList) return; | |
697 | TH3* h = dynamic_cast<TH3*>(fOutputList->FindObject(histName)); | |
698 | if (h == NULL) return; | |
699 | h->Fill(x, y, z); | |
700 | } | |
701 | void AliAnalysisTaskLongRangeCorrelations::Fill(const char* histName, const Double_t* x, Double_t w) { | |
702 | if (NULL == fOutputList) return; | |
703 | THnSparse* h = dynamic_cast<THnSparse*>(fOutputList->FindObject(histName)); | |
704 | if (h == NULL) return; | |
705 | h->Fill(x, w); | |
706 | } |