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, proviyaded 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 purapose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 ///////////////////////////////////////////////////////////////////////////
19 // Analysis for identified charged hadron spectra. //
22 ///////////////////////////////////////////////////////////////////////////
24 #include "Riostream.h"
33 #include "TObjArray.h"
37 #include "AliAnalysisTaskSE.h"
38 #include "AliAnalysisManager.h"
40 #include "AliHeader.h"
41 #include "AliGenPythiaEventHeader.h"
42 #include "AliGenCocktailEventHeader.h"
45 #include "AliESDtrackCuts.h"
46 #include "AliESDVertex.h"
47 #include "AliESDEvent.h"
48 #include "AliESDInputHandler.h"
49 #include "AliESDtrack.h"
50 #include "AliESDpid.h"
51 #include "AliCentrality.h"
52 #include "AliESDUtils.h"
53 #include "AliMultiplicity.h"
55 #include "AliMCEventHandler.h"
56 #include "AliMCEvent.h"
61 #include "AliAnalysisCombinedHadronSpectra.h"
64 ClassImp(AliAnalysisCombinedHadronSpectra)
66 //________________________________________________________________________
67 AliAnalysisCombinedHadronSpectra::AliAnalysisCombinedHadronSpectra()
68 : AliAnalysisTaskSE("TaskChargedHadron"), fESD(0), fListHist(0), fESDtrackCuts(0),fESDTrackCutsMult(0),fESDpid(0),
71 fUseHBTmultiplicity(0),
80 // default Constructor
81 /* fast compilation test
82 gSystem->Load("libANALYSIS");
83 gSystem->Load("libANALYSISalice");
84 .L /d/alice09/akalweit/train/trunk/akalweit_hadronSpectra/AliAnalysisCombinedHadronSpectra.cxx++
89 //________________________________________________________________________
90 AliAnalysisCombinedHadronSpectra::AliAnalysisCombinedHadronSpectra(const char *name)
91 : AliAnalysisTaskSE(name), fESD(0), fListHist(0), fESDtrackCuts(0),fESDTrackCutsMult(0),fESDpid(0),
94 fUseHBTmultiplicity(0),
104 // standard constructur which should be used
106 Printf("*** CONSTRUCTOR CALLED ****");
110 fUseHBTmultiplicity = kTRUE;
111 fUseTPConlyTracks = kFALSE;
113 fAlephParameters[0] = 0.0283086;
114 fAlephParameters[1] = 2.63394e+01;
115 fAlephParameters[2] = 5.04114e-11;
116 fAlephParameters[3] = 2.12543e+00;
117 fAlephParameters[4] = 4.88663e+00;
119 // initialize PID object
121 //fESDpid = new AliESDpid();
125 fESDtrackCuts = new AliESDtrackCuts("AliESDtrackCuts","AliESDtrackCuts");
128 // Output slot #0 writes into a TList container
129 DefineOutput(1, TList::Class());
134 //________________________________________________________________________
135 void AliAnalysisCombinedHadronSpectra::Initialize()
138 // updating parameters in case of changes
142 //fESDpid->GetTPCResponse().SetBetheBlochParameters(fAlephParameters[0],fAlephParameters[1],fAlephParameters[2],fAlephParameters[3],fAlephParameters[4]);
147 fESDtrackCuts->SetMaxCovDiagonalElements(2, 2, 0.5, 0.5, 2); // BEWARE STANDARD VALUES ARE: 2, 2, 0.5, 0.5, 2
148 fESDtrackCuts->SetMaxNsigmaToVertex(3);
149 fESDtrackCuts->SetRequireSigmaToVertex(kTRUE);
150 fESDtrackCuts->SetAcceptKinkDaughters(kFALSE);
151 fESDtrackCuts->SetMinNClustersTPC(70);
152 fESDtrackCuts->SetMaxChi2PerClusterTPC(4);
153 fESDtrackCuts->SetMaxDCAToVertexXY(3);
154 fESDtrackCuts->SetMaxDCAToVertexZ(3);
155 fESDtrackCuts->SetRequireTPCRefit(kTRUE);
156 fESDtrackCuts->SetRequireITSRefit(kTRUE);
157 fESDtrackCuts->SetClusterRequirementITS(AliESDtrackCuts::kSPD, AliESDtrackCuts::kAny); //TEMPORARY <-> REMOVE
158 fESDtrackCuts->SetMinNClustersITS(3);
160 //fESDtrackCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(kTRUE); // kTRUE = sel. primaries --> patch for the moment, do TFractionFitter later
163 if (!fUseTPConlyTracks) {
164 fESDtrackCuts = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(kFALSE);
165 fESDtrackCuts->SetMaxDCAToVertexXY(3);
166 fESDtrackCuts->SetMaxDCAToVertexZ(2);
167 fESDtrackCuts->SetEtaRange(-0.9,0.9);
170 //fESDtrackCuts = AliESDtrackCuts::GetStandardTPCOnlyTrackCuts();
171 fESDtrackCuts->SetMinNClustersTPC(70);
172 fESDtrackCuts->SetMaxChi2PerClusterTPC(4);
173 fESDtrackCuts->SetAcceptKinkDaughters(kFALSE);
174 fESDtrackCuts->SetRequireTPCRefit(kFALSE);
176 fESDtrackCuts->SetMaxDCAToVertexXY(30);
177 fESDtrackCuts->SetMaxDCAToVertexZ(6);
178 fESDtrackCuts->SetDCAToVertex2D(kFALSE);
179 fESDtrackCuts->SetRequireSigmaToVertex(kFALSE);
181 fESDtrackCuts->SetEtaRange(-0.9,0.9);
187 fESDTrackCutsMult = AliESDtrackCuts::GetStandardITSTPCTrackCuts2010(kTRUE);
188 fESDTrackCutsMult->SetEtaRange(-1.2,+1.2);
189 fESDTrackCutsMult->SetPtRange(0.15,1e10);
194 //________________________________________________________________________
195 void AliAnalysisCombinedHadronSpectra::UserCreateOutputObjects()
199 fListHist = new TList();
200 fListHist->SetOwner(kTRUE);
202 const Int_t kPtBins = 35;
203 const Int_t kMultBins = 11;
204 const Int_t kDcaBins = 76;
205 const Float_t kDcaBinsTPConlyFactor = 10; //need to change binning of DCA plot for tpconly
207 Double_t binsPt[kPtBins+1] = {0., 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0};
209 Double_t binsDca[kDcaBins+1] = {-3,-2.85,-2.7,-2.55,-2.4,-2.25,-2.1,-1.95,-1.8,-1.65,-1.5,-1.35,-1.2,-1.05,-0.9,-0.75,-0.6,-0.45,-0.3,-0.285,-0.27,-0.255,-0.24,-0.225,-0.21,-0.195,-0.18,-0.165,-0.15,-0.135,-0.12,-0.105,-0.09,-0.075,-0.06,-0.045,-0.03,-0.015,0,0.015,0.03,0.045,0.06,0.075,0.09,0.105,0.12,0.135,0.15,0.165,0.18,0.195,0.21,0.225,0.24,0.255,0.27,0.285,0.3,0.45,0.6,0.75,0.9,1.05,1.2,1.35,1.5,1.65,1.8,1.95,2.1,2.25,2.4,2.55,2.7,2.85,3};
211 // DCA bins borders get multiplied by constant factor for TPConlyTracks
212 Double_t binsDcaTPConly[kDcaBins+1];
213 for (Int_t i = 0; i< kDcaBins+1; i++) {
214 binsDcaTPConly[i] = kDcaBinsTPConlyFactor * binsDca[i];
218 // create the histograms with all necessary information --> it is filled 4x for each particle assumption
220 // (0.) assumed particle: 0. pion, 1. kaon, 2. proton, 3. deuteron
221 // (1.) multiplicity or centrality -- number of accepted ESD tracks per events (deprecated), but now classes from 1 to 10, 0: Min. Bias
224 // (4.) rapidity --> filled 4x
225 // (5.) pull TPC dEx --> filled 4x
226 // (6.) has valid TOF pid signal
227 // (7.) nsigma TOF --> filled 4x
229 // (9.) CODE -- only MC 0-generated, 1-true rec. primaries, 2-misident, 3-second weak, 4-second material
231 // 0, 1, 2, 3, 4, 5, 6, 7, 8
232 Int_t binsHistReal[9] = { 3, kMultBins, kPtBins, 2, 10, 50, 2, 80, kDcaBins};
233 Double_t xminHistReal[9] = {-0.5, -0.5, 0, -2, -0.5, -5,- 0.5, -8, -3};
234 Double_t xmaxHistReal[9] = { 2.5, 10.5, 3, 2, 0.5, 5, 1.5, 8, 3};
235 fHistRealTracks = new THnSparseF("fHistRealTracks","real tracks",9,binsHistReal,xminHistReal,xmaxHistReal);
238 fHistRealTracks->GetAxis(2)->Set(kPtBins, binsPt);
240 if (!fUseTPConlyTracks) fHistRealTracks->GetAxis(8)->Set(kDcaBins, binsDca);
241 else fHistRealTracks->GetAxis(8)->Set(kDcaBins, binsDcaTPConly);
243 fListHist->Add(fHistRealTracks);
245 // 0.ptot,1.tpcSig,2.hasTOF, 3. assumed part., 4. nclDedx, 5. nSigmaTPC (4x), 6. nSigmaTOF (4x), 7. centrality
246 fHistPidQA = new TH3D("fHistPidQA","PID QA",500,0.1,10,1000,0,1000,2,-2,2);
247 BinLogAxis(fHistPidQA);
248 fListHist->Add(fHistPidQA);
249 // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
250 Int_t binsHistMC[10] = { 3, kMultBins, kPtBins, 2, 10, 50, 2, 80, kDcaBins, 5};
251 Double_t xminHistMC[10] = {-0.5, -0.5, 0, -2, -0.5, -5,- 0.5, -8, -3, -0.5};
252 Double_t xmaxHistMC[10] = { 2.5, 10.5, 3, 2, 0.5, 5, 1.5, 8, 3, 4.5};
253 fHistMCparticles = new THnSparseF("fHistMCparticles","MC histogram",10,binsHistMC,xminHistMC,xmaxHistMC);
254 fHistMCparticles->GetAxis(2)->Set(kPtBins, binsPt);
256 //different DCAxy binning for TPConlyTracks
257 if (!fUseTPConlyTracks) fHistMCparticles->GetAxis(8)->Set(kDcaBins, binsDca);
258 else fHistMCparticles->GetAxis(8)->Set(kDcaBins, binsDcaTPConly);
260 fListHist->Add(fHistMCparticles);
262 fHistMult = new TH2D("fHistMult", "control histogram to count number of events", 502, -2.5, 499.5,4,-0.5,3.5);
263 fHistCentrality = new TH1D("fHistCentrality", "control histogram to count number of events", 22, -1.5, 20.5);
264 fListHist->Add(fHistMult);
265 fListHist->Add(fHistCentrality);
269 //________________________________________________________________________
270 void AliAnalysisCombinedHadronSpectra::UserExec(Option_t *)
275 if (!fESDpid) fESDpid = ((AliESDInputHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->GetESDpid();
277 fESDpid = new AliESDpid(); // HACK FOR MC PBPB --> PLEASE REMOVE AS SOON AS POSSIBLE
278 fESDpid->GetTPCResponse().SetBetheBlochParameters(1.28778e+00/50., 3.13539e+01, TMath::Exp(-3.16327e+01), 1.87901e+00, 6.41583e+00);
280 //AliLog::SetGlobalLogLevel(AliLog::kError);
282 // Check Monte Carlo information and other access first:
284 AliMCEventHandler* eventHandler = dynamic_cast<AliMCEventHandler*> (AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
286 //Printf("ERROR: Could not retrieve MC event handler");
290 AliMCEvent* mcEvent = 0x0;
291 AliStack* stack = 0x0;
292 if (eventHandler) mcEvent = eventHandler->MCEvent();
294 //Printf("ERROR: Could not retrieve MC event");
298 stack = mcEvent->Stack();
302 fESD = dynamic_cast<AliESDEvent*>( InputEvent() );
304 //Printf("ERROR: fESD not available");
308 if (!fESDtrackCuts) {
309 Printf("ERROR: fESDtrackCuts not available");
313 // check if event is selected by physics selection class
315 Bool_t isSelected = kTRUE; // for reasons of backward compatibility --> check is now in AddTask macro
317 Bool_t isSelected = kFALSE;
318 isSelected = (((AliInputEventHandler*)(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler()))->IsEventSelected() & AliVEvent::kMB) == AliVEvent::kMB;
321 // monitor vertex position
323 const AliESDVertex *vertex = fESD->GetPrimaryVertexTracks();
324 if(vertex->GetNContributors()<1) {
326 vertex = fESD->GetPrimaryVertexSPD();
327 if(vertex->GetNContributors()<1) vertex = 0x0;
330 // small track loop to determine trigger Pt, multiplicity or centrality
332 Double_t triggerPt = 0;
333 for (Int_t i=0;i<fESD->GetNumberOfTracks();++i) {
334 AliESDtrack *track =fESD->GetTrack(i);
335 if (!fESDTrackCutsMult->AcceptTrack(track)) continue;
336 if (track->Pt() > triggerPt) triggerPt = track->Pt();
338 Int_t trackCounter = fESDTrackCutsMult->CountAcceptedTracks(fESD);
340 // 2nd multiplicity estimator SPD hits; replaces multiplicity from HBT
342 Float_t spdCorr = -1;
343 const AliMultiplicity *mult = fESD->GetMultiplicity();
344 Float_t nClusters[6]={0.0,0.0,0.0,0.0,0.0,0.0};
345 for(Int_t ilay=0; ilay<6; ilay++) nClusters[ilay] = (Float_t)mult->GetNumberOfITSClusters(ilay);
346 if (vertex) spdCorr = AliESDUtils::GetCorrSPD2(nClusters[1],vertex->GetZ());
348 Float_t centrality = -1;
350 // IMPORTANT CENTRALITY DEFINITION FOR pp
352 if (!fUseHBTmultiplicity) {
353 // test binning to check if multiplicity-dependence is due to diffractive events being s
354 if (trackCounter >= 0 && trackCounter <= 0) centrality = 0;
355 if (trackCounter >= 1 && trackCounter <= 1) centrality = 1;
356 if (trackCounter >= 2 && trackCounter <= 2) centrality = 2;
357 if (trackCounter >= 3 && trackCounter <= 3) centrality = 3;
358 if (trackCounter >= 4 && trackCounter <= 4) centrality = 4;
359 if (trackCounter >= 5 && trackCounter <= 5) centrality = 5;
360 // this was all the original bin 1 being [0..5]
361 if (trackCounter >= 6 && trackCounter <= 9) centrality = 6;
362 if (trackCounter >= 10 && trackCounter <= 14) centrality = 7;
363 if (trackCounter >= 15 && trackCounter <= 22) centrality = 8;
364 if (trackCounter >= 23 && trackCounter <= 32) centrality = 9;
365 if (trackCounter >= 33 && trackCounter <= 42) centrality = 10;
367 if (trackCounter >= 43 && trackCounter <= 52) centrality = 7
368 if (trackCounter >= 53 && trackCounter <= 62) centrality = 8;
369 if (trackCounter >= 63 && trackCounter <= 72) centrality = 9;
370 if (trackCounter >= 73 && trackCounter <= 82) centrality = 10;
373 if (spdCorr >= 0 && spdCorr <= 2) centrality = 0;
374 if (spdCorr >= 3 && spdCorr <= 5) centrality = 1;
375 if (spdCorr >= 6 && spdCorr <= 8) centrality = 2;
376 if (spdCorr >= 9 && spdCorr <= 11) centrality = 3;
377 if (spdCorr >= 12 && spdCorr <= 14) centrality = 4;
378 if (spdCorr >= 15 && spdCorr <= 16) centrality = 5;
379 // this was all the original bin 1 being [0..16]
380 if (spdCorr >= 17 && spdCorr <= 30) centrality = 6;
381 if (spdCorr >= 31 && spdCorr <= 45) centrality = 7;
382 if (spdCorr >= 46 && spdCorr <= 68) centrality = 8;
383 if (spdCorr >= 69 && spdCorr <= 97) centrality = 9;
384 if (spdCorr >= 98) centrality = 10;
386 if (spdCorr >= 17 && spdCorr <= 30) centrality = 2;
387 if (spdCorr >= 31 && spdCorr <= 45) centrality = 3;
388 if (spdCorr >= 46 && spdCorr <= 68) centrality = 4;
389 if (spdCorr >= 69 && spdCorr <= 97) centrality = 5;
390 if (spdCorr >= 98) centrality = 6;
394 Int_t rootS = fESD->GetBeamEnergy() < 1000 ? 0 : 1;
395 if (fESD->GetEventSpecie() == 4) { // PbPb
397 AliCentrality *esdCentrality = fESD->GetCentrality();
398 centrality = esdCentrality->GetCentralityClass10("V0M") + 1; // centrality percentile determined with V0
399 if (TMath::Abs(centrality - 1) < 1e-5) {
400 centrality = esdCentrality->GetCentralityClass5("V0M");
403 Int_t nContributors = 0;
404 if (fESD->GetPrimaryVertexTPC()) nContributors = fESD->GetPrimaryVertexTPC()->GetNContributors();
406 Int_t processtype = 0;
407 Int_t processCode = 0;
409 // important change: fill generated only after vertex cut in case of heavy-ions
411 if (!vertex && fESD->GetEventSpecie() == 4) {
412 fHistMult->Fill(-1, processCode);
413 PostData(1, fListHist);
416 if (TMath::Abs(vertex->GetZv()) > 10 && fESD->GetEventSpecie() == 4) {
417 fHistMult->Fill(-1, processCode);
418 PostData(1, fListHist);
427 AliHeader * header = mcEvent->Header();
428 processtype = GetPythiaEventProcessType(header);
430 if (processtype !=92 && processtype !=93 && processtype != 94) processCode = 1;
431 // single diffractive
432 if ((processtype == 92 || processtype == 93)) processCode = 2;
433 // double diffractive
434 if (processtype == 94) processCode = 3;
436 for(Int_t i = 0; i < stack->GetNtrack(); i++) {
437 TParticle * trackMC = stack->Particle(i);
438 Int_t pdg = trackMC->GetPdgCode();
440 Double_t xv = trackMC->Vx();
441 Double_t yv = trackMC->Vy();
442 Double_t zv = trackMC->Vz();
444 dxy = TMath::Sqrt(xv*xv + yv*yv); // so stupid to avoid warnings
446 dz = TMath::Abs(zv); // so stupid to avoid warnings
448 // vertex cut - selection of primaries
450 //if (dxy > 3 || dz > 10) continue; // fixed cut at 3cm in r
452 if (!stack->IsPhysicalPrimary(i)) continue;
454 // fill MC histograms here...
456 Double_t rap = trackMC->Y();
457 Double_t pT = trackMC->Pt();
458 Int_t sign = pdg < 0 ? -1 : 1; // only works for charged pi,K,p !!
459 Double_t transMass = TMath::Sqrt(trackMC->Pt()*trackMC->Pt() + trackMC->GetMass()*trackMC->GetMass())
460 - trackMC->GetMass();
463 if (TMath::Abs(pdg) == 211) iPart = 0; // select Pi+/Pi- only
464 if (TMath::Abs(pdg) == 321) iPart = 1; // select K+/K- only
465 if (TMath::Abs(pdg) == 2212) iPart = 2; // select p+/p- only
466 if (iPart == -1) continue;
468 Double_t vecHistMC[10] = {iPart, centrality, pT, sign, rap, 0, 1, 0, dxy, 0};
469 if (!fOnlyQA) fHistMCparticles->Fill(vecHistMC);
473 if (!isSelected && !fOnlyQA) {
474 PostData(1, fListHist);
479 fHistMult->Fill(-1, processCode);
480 PostData(1, fListHist);
483 if (TMath::Abs(vertex->GetZv()) > 10) {
484 fHistMult->Fill(-1, processCode);
485 PostData(1, fListHist);
490 // count events after physics selection and after vertex selection
492 //cout << "MULTIPLICITY " << trackCounter << " " << fESD->GetEventNumberInFile() <<endl;
493 fHistMult->Fill(trackCounter, processCode);
494 fHistCentrality->Fill(centrality);
498 //const Float_t kNsigmaCut = 3;
499 //const Float_t k2sigmaCorr = 1/(0.5*(TMath::Erf(kNsigmaCut/sqrt(2))-TMath::Erf(-kNsigmaCut/sqrt(2))))/*1/0.9545*/;
501 Float_t dca[2], cov[3]; // dca_xy, dca_z, sigma_xy, sigma_xy_z, sigma_z for the vertex cut
503 for (Int_t i=0;i<fESD->GetNumberOfTracks();++i) {
505 AliESDtrack *track = 0;
507 //normal tracks, if tpconly flag is set, use tpconlytracks
508 if (!fUseTPConlyTracks){
509 track =fESD->GetTrack(i);
512 track = fESDtrackCuts->GetTPCOnlyTrack(fESD,i);
513 if (!track) continue;
516 if (!track->GetInnerParam()) {
517 if (fUseTPConlyTracks) {delete track; track = 0;} //need to delete tpconlytrack
520 Double_t ptot = track->GetInnerParam()->GetP(); // momentum for dEdx determination
521 Double_t pT = track->Pt();
522 track->GetImpactParameters(dca, cov);
525 // cut for dead regions in the detector
526 // if (track->Eta() > 0.1 && (track->Eta() < 0.2 && track->Phi() > 0.1 && track->Phi() < 0.1) continue;
528 // 2.a) apply some standard track cuts according to general recommendations
530 if (!fESDtrackCuts->AcceptTrack(track)) {
531 if (fUseTPConlyTracks) {delete track; track = 0;} //need to delete tpconlytrack
535 UInt_t status = track->GetStatus();
536 Bool_t hasTOFout = status&AliESDtrack::kTOFout;
537 Bool_t hasTOFtime = status&AliESDtrack::kTIME;
538 Bool_t hasTOFpid = status&AliESDtrack::kTOFpid;
539 Bool_t hasTOF = kFALSE;
540 if (hasTOFout && hasTOFtime && hasTOFpid) hasTOF = kTRUE;
541 Float_t length = track->GetIntegratedLength();
542 if (length < 350.) hasTOF = kFALSE;
544 // calculate rapidities and kinematics
548 track->GetPxPyPz(pvec);
549 Double_t energyPion = TMath::Sqrt(track->GetP()*track->GetP() + AliPID::ParticleMass(AliPID::kPion)*AliPID::ParticleMass(AliPID::kPion));
550 Double_t energyKaon = TMath::Sqrt(track->GetP()*track->GetP() + AliPID::ParticleMass(AliPID::kKaon)*AliPID::ParticleMass(AliPID::kKaon));
551 Double_t energyProton = TMath::Sqrt(track->GetP()*track->GetP() + AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton));
552 Double_t energyDeuteron = TMath::Sqrt(track->GetP()*track->GetP() + 4*AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton));
554 Double_t rapPion = 0.5*TMath::Log((energyPion + pvec[2])/(energyPion - pvec[2]));
555 Double_t rapKaon = 0.5*TMath::Log((energyKaon + pvec[2])/(energyKaon - pvec[2]));
556 Double_t rapProton = 0.5*TMath::Log((energyProton + pvec[2])/(energyProton - pvec[2]));
557 Double_t rapDeuteron = 0.5*TMath::Log((energyDeuteron + pvec[2])/(energyDeuteron - pvec[2]));
559 Double_t transMassPion = TMath::Sqrt(track->Pt()*track->Pt() + AliPID::ParticleMass(AliPID::kPion)*AliPID::ParticleMass(AliPID::kPion))
560 - AliPID::ParticleMass(AliPID::kPion);
561 Double_t transMassKaon = TMath::Sqrt(track->Pt()*track->Pt() + AliPID::ParticleMass(AliPID::kKaon)*AliPID::ParticleMass(AliPID::kKaon))
562 - AliPID::ParticleMass(AliPID::kKaon);
563 Double_t transMassProton = TMath::Sqrt(track->Pt()*track->Pt() + AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton))
564 - AliPID::ParticleMass(AliPID::kProton);
565 Double_t transMassDeuteron = TMath::Sqrt(track->Pt()*track->Pt() + 4*AliPID::ParticleMass(AliPID::kProton)*AliPID::ParticleMass(AliPID::kProton))
566 - 2*AliPID::ParticleMass(AliPID::kProton);
570 Double_t sign = track->GetSign();
571 Double_t tpcSignal = track->GetTPCsignal();
574 // 3.a. calculate expected signals in nsigma
577 // (0.) assumed particle: 0. pion, 1. kaon, 2. proton, 3. deuteron
578 // (1.) multiplicity or centrality -- number of accepted ESD tracks per events (deprecated), but now classes from 1 to 10, 0: Min. Bias
581 // (4.) rapidity --> filled 4x
582 // (5.) pull TPC dEx --> filled 4x
583 // (6.) has valid TOF pid signal
584 // (7.) nsigma TOF --> filled 4x
586 // (9.) CODE -- only MC 0-generated, 1-true rec. primaries, 2-misident, 3-second weak, 4-second material
588 Double_t transMass[4] = {transMassPion,transMassKaon,transMassProton,transMassDeuteron};
589 Double_t rap[4] = {rapPion,rapKaon,rapProton,rapDeuteron};
590 Double_t pullsTPC[4] = {fESDpid->NumberOfSigmasTPC(track,AliPID::kPion),
591 fESDpid->NumberOfSigmasTPC(track,AliPID::kKaon),
592 fESDpid->NumberOfSigmasTPC(track,AliPID::kProton),
593 0}; // ASK FOR PUTTING THE DEUTERON TO AliPID !!!!!!!!!!!!!!
594 Float_t time0 = fESDpid->GetTOFResponse().GetTimeZero();
595 //fESDpid->GetTOFResponse().SetTimeResolution(130.);
596 Double_t pullsTOF[4] = {fESDpid->NumberOfSigmasTOF(track,AliPID::kPion, time0),
597 fESDpid->NumberOfSigmasTOF(track,AliPID::kKaon, time0),
598 fESDpid->NumberOfSigmasTOF(track,AliPID::kProton, time0),
599 0}; // ASK FOR PUTTING THE DEUTERON TO AliPID !!!!!!!!!!!!!!;
601 Double_t tpcQA[4] = {fESDpid->NumberOfSigmasTPC(track,AliPID::kElectron),
602 fESDpid->NumberOfSigmasTPC(track,AliPID::kPion),
603 fESDpid->NumberOfSigmasTPC(track,AliPID::kKaon),
604 fESDpid->NumberOfSigmasTPC(track,AliPID::kProton)};
605 Double_t tofQA[4] = {fESDpid->NumberOfSigmasTOF(track,AliPID::kElectron, time0),
606 fESDpid->NumberOfSigmasTOF(track,AliPID::kPion, time0),
607 fESDpid->NumberOfSigmasTOF(track,AliPID::kKaon, time0),
608 fESDpid->NumberOfSigmasTOF(track,AliPID::kProton, time0)};
610 for(Int_t iPart = 0; iPart < 3; iPart++) { // loop over assumed particle type
611 // 0, 1, 2, 3, 4, 5, 6, 7, 8
612 Double_t vecHistReal[9] = {iPart, centrality, pT, sign, rap[iPart], pullsTPC[iPart], hasTOF, pullsTOF[iPart], dca[0]};
613 if (!fOnlyQA) fHistRealTracks->Fill(vecHistReal);
615 // using MC truth for precise efficiencies...
617 if (fMCtrue && !fOnlyQA) {
618 Int_t code = 5; // code: 0-generated, 1-true rec. primaries, 2-misident, 3-second weak, 4-second material
619 Int_t assumedPdg = 0;//2212(proton); 321(Kaon); 211(pion);
620 if (iPart == 0) assumedPdg = 211;
621 if (iPart == 1) assumedPdg = 321;
622 if (iPart == 2) assumedPdg = 2212;
625 TParticle *trackMC = stack->Particle(TMath::Abs(track->GetLabel()));
626 Int_t pdg = TMath::Abs(trackMC->GetPdgCode());
628 if (pdg != assumedPdg) code = 2;
629 if (pdg == assumedPdg && stack->IsPhysicalPrimary(TMath::Abs(track->GetLabel()))) code = 1;
630 if (pdg == assumedPdg && stack->IsSecondaryFromWeakDecay(TMath::Abs(track->GetLabel()))) code = 3;
631 if (pdg == assumedPdg && stack->IsSecondaryFromMaterial(TMath::Abs(track->GetLabel()))) code = 4;
633 // muons need special treatment, because they are indistinguishable from pions
635 if (iPart == 0 && pdg == 13 && stack->IsPhysicalPrimary(TMath::Abs(track->GetLabel()))) code = 1;
636 if (iPart == 0 && pdg == 13 && stack->IsSecondaryFromWeakDecay(TMath::Abs(track->GetLabel()))) code = 3;
638 // check TOF mismatch on MC basis with TOF label
641 track->GetTOFLabel(tofLabel);
642 if (TMath::Abs(track->GetLabel()) != TMath::Abs(tofLabel[0])) hasTOF = kFALSE;
644 // IMPORTANT BIG PROBLEM HERE THE PROBABLILITY TO HAVE A PID SIGNAL MUST BE IN !!!!!!!!!!!!
646 // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
647 Double_t vectorHistMC[10] = {iPart, centrality, pT, sign, rap[iPart], pullsTPC[iPart], hasTOF, pullsTOF[iPart], dca[0], code};
648 if (!fOnlyQA) fHistMCparticles->Fill(vectorHistMC);
652 Int_t tpcShared = track->GetTPCnclsS();
653 if (TMath::Abs(track->Eta()) < 0.8 && iPart == 0 && tpcShared < 4) fHistPidQA->Fill(ptot,tpcSignal,sign);
654 } // end loop over assumed particle type
656 //need to delete tpconlytrack
657 if (fUseTPConlyTracks){
662 } // end of track loop
665 PostData(1, fListHist);
670 //________________________________________________________________________
671 void AliAnalysisCombinedHadronSpectra::Terminate(Option_t *)
673 // Draw result to the screen
674 // Called once at the end of the query
675 Printf("*** CONSTRUCTOR CALLED ****");
680 //________________________________________________________________________
681 Bool_t AliAnalysisCombinedHadronSpectra::SelectOnImpPar(AliESDtrack* t) {
683 // cut on transverse impact parameter // DEPRECATED
685 Float_t d0z0[2],covd0z0[3];
686 t->GetImpactParameters(d0z0,covd0z0);
687 Float_t sigma= 0.0050+0.0060/TMath::Power(t->Pt(),0.9);
688 Float_t d0max = 7.*sigma;
690 Float_t sigmaZ = 0.0146+0.0070/TMath::Power(t->Pt(),1.114758);
691 if (t->Pt() > 1) sigmaZ = 0.0216;
692 Float_t d0maxZ = 5.*sigmaZ;
694 if(TMath::Abs(d0z0[0]) < d0max && TMath::Abs(d0z0[1]) < d0maxZ) return kTRUE;
699 //________________________________________________________________________
700 void AliAnalysisCombinedHadronSpectra::BinLogAxis(const TH1 *h) {
702 // Method for the correct logarithmic binning of histograms
704 TAxis *axis = h->GetXaxis();
705 int bins = axis->GetNbins();
707 Double_t from = axis->GetXmin();
708 Double_t to = axis->GetXmax();
709 Double_t *newBins = new Double_t[bins + 1];
712 Double_t factor = pow(to/from, 1./bins);
714 for (int i = 1; i <= bins; i++) {
715 newBins[i] = factor * newBins[i-1];
717 axis->Set(bins, newBins);
723 //________________________________________________________________________
724 Int_t AliAnalysisCombinedHadronSpectra::GetPythiaEventProcessType(const AliHeader* aHeader, const Bool_t adebug) const {
726 // get the process type of the event.
729 // can only read pythia headers, either directly or from cocktalil header
730 AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader->GenEventHeader());
732 if (!pythiaGenHeader) {
734 AliGenCocktailEventHeader* genCocktailHeader = dynamic_cast<AliGenCocktailEventHeader*>(aHeader->GenEventHeader());
735 if (!genCocktailHeader) {
736 //printf("AliAnalysisCombinedHadronSpectra::GetProcessType : Unknown header type (not Pythia or Cocktail). \n");
740 TList* headerList = genCocktailHeader->GetHeaders();
745 for (Int_t i=0; i<headerList->GetEntries(); i++) {
746 pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(headerList->At(i));
751 if (!pythiaGenHeader) {
752 //printf("AliAnalysisCombinedHadronSpectra::GetProcessType : Could not find Pythia header. \n");
758 //printf("AliAnalysisCombinedHadronSpectra::GetProcessType : Pythia process type found: %d \n",pythiaGenHeader->ProcessType());
761 return pythiaGenHeader->ProcessType();