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, 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 **************************************************************************/
16 // static dNdPt helper functions
18 // basic functionality to select events and tracks
21 // Origin: Jan Fiete Grosse-Oetringhaus
22 // Modified and Extended: Jacek Otwinowski 19/11/2009
23 // last change: 2013-06-13 by M.Knichel
33 #include <AliHeader.h>
37 #include <AliESDEvent.h>
38 #include <AliMCEvent.h>
39 #include <AliESDVertex.h>
40 #include <AliVertexerTracks.h>
41 #include <AliMathBase.h>
42 #include <AliESDtrackCuts.h>
43 #include <AliTracker.h>
44 #include "AlidNdPtEventCuts.h"
45 #include "AlidNdPtAcceptanceCuts.h"
46 #include <AliGenEventHeader.h>
47 #include <AliGenPythiaEventHeader.h>
48 #include <AliGenCocktailEventHeader.h>
49 #include <AliGenDPMjetEventHeader.h>
50 #include "AlidNdPtHelper.h"
52 //____________________________________________________________________
53 ClassImp(AlidNdPtHelper)
55 //____________________________________________________________________
56 const AliESDVertex* AlidNdPtHelper::GetVertex(AliESDEvent* const aEsd, const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts, const AliESDtrackCuts *const trackCuts, AnalysisMode analysisMode, Bool_t debug, Bool_t bRedoTPC, Bool_t bUseMeanVertex)
58 // Get the vertex from the ESD and returns it if the vertex is valid
60 // Second argument decides which vertex is used (this selects
61 // also the quality criteria that are applied)
65 ::Error("AlidNdPtHelper::GetVertex()","esd event is NULL");
69 if(!evtCuts || !accCuts || !trackCuts)
71 ::Error("AlidNdPtHelper::GetVertex()","cuts not available");
75 const AliESDVertex* vertex = 0;
76 AliESDVertex *initVertex = 0;
77 if (analysisMode == kSPD ||
78 analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate || analysisMode == kTPCITSHybrid)
80 vertex = aEsd->GetPrimaryVertexSPD();
82 Printf("AlidNdPtHelper::GetVertex: Returning SPD vertex");
84 else if (analysisMode == kTPCITS || analysisMode == kTPCTrackSPDvtx || analysisMode == kTPCTrackSPDvtxUpdate ||
85 analysisMode == kTPCITSHybridTrackSPDvtx || analysisMode == kTPCITSHybridTrackSPDvtxDCArPt ||
86 analysisMode == kITSStandAloneTrackSPDvtx || analysisMode == kITSStandAloneTPCTrackSPDvtx)
88 vertex = aEsd->GetPrimaryVertexTracks();
89 if(!vertex) return NULL;
90 if(vertex->GetNContributors()<1) {
92 vertex = aEsd->GetPrimaryVertexSPD();
95 else if (analysisMode == kTPC)
99 Double_t kBz = aEsd->GetMagneticField();
100 AliVertexerTracks vertexer(kBz);
103 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
104 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
105 initVertex = new AliESDVertex(pos,err);
106 vertexer.SetVtxStart(initVertex);
107 vertexer.SetConstraintOn();
110 Double_t maxDCAr = accCuts->GetMaxDCAr();
111 Double_t maxDCAz = accCuts->GetMaxDCAz();
112 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
114 //vertexer.SetTPCMode(Double_t dcacut=0.1, Double_t dcacutIter0=1.0, Double_t maxd0z0=5.0, Int_t minCls=10, Int_t mintrks=1, Double_t nsigma=3., Double_t mindetfitter=0.1, Double_t maxtgl=1.5, Double_t fidR=3., Double_t fidZ=30., Int_t finderAlgo=1, Int_t finderAlgoIter0=4);
115 vertexer.SetTPCMode(0.1,1.0,5.0,minTPCClust,1,3.,0.1,2.0,maxDCAr,maxDCAz,1,4);
117 // TPC track preselection
118 Int_t ntracks = aEsd->GetNumberOfTracks();
119 TObjArray array(ntracks);
120 UShort_t *id = new UShort_t[ntracks];
124 for (Int_t i=0;i <ntracks; i++) {
125 AliESDtrack *t = aEsd->GetTrack(i);
127 if (t->Charge() == 0) continue;
128 if (!t->GetTPCInnerParam()) continue;
129 if (t->GetTPCNcls()<vertexer.GetMinClusters()) continue;
130 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
132 array.AddLast(tpcTrack);
133 id[count] = (UShort_t)t->GetID();
137 AliESDVertex *vTPC = vertexer.VertexForSelectedTracks(&array,id, kTRUE, kTRUE, bUseMeanVertex);
139 delete [] id; id=NULL;
143 // set recreated TPC vertex
144 aEsd->SetPrimaryVertexTPC(vTPC);
146 for (Int_t i=0; i<aEsd->GetNumberOfTracks(); i++) {
147 AliESDtrack *t = aEsd->GetTrack(i);
150 Double_t x[3]; t->GetXYZ(x);
151 Double_t b[3]; AliTracker::GetBxByBz(x,b);
152 Bool_t isOK = t->RelateToVertexTPCBxByBz(vTPC, b, kVeryBig);
158 delete [] id; id=NULL;
161 vertex = aEsd->GetPrimaryVertexTPC();
163 Printf("AlidNdPtHelper::GetVertex: Returning vertex from tracks");
166 Printf("AlidNdPtHelper::GetVertex: ERROR: Invalid second argument %d", analysisMode);
170 Printf("AlidNdPtHelper::GetVertex: No vertex found in ESD");
176 Printf("AlidNdPtHelper::GetVertex: Returning valid vertex: %s", vertex->GetTitle());
180 if(initVertex) delete initVertex; initVertex=NULL;
184 //____________________________________________________________________
185 Bool_t AlidNdPtHelper::TestRecVertex(const AliESDVertex* vertex, const AliESDVertex* vertexSPD, AnalysisMode analysisMode, Bool_t debug)
187 // Checks if a vertex meets the needed quality criteria
188 if(!vertex) return kFALSE;
189 if(!vertex->GetStatus()) return kFALSE;
191 Float_t requiredZResolution = -1;
192 if (analysisMode == kSPD || analysisMode == kTPCITS ||
193 analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate || analysisMode == kTPCITSHybrid ||
194 analysisMode == kTPCTrackSPDvtx || analysisMode == kTPCTrackSPDvtxUpdate || analysisMode == kTPCITSHybridTrackSPDvtx || analysisMode == kTPCITSHybridTrackSPDvtxDCArPt
195 || analysisMode == kITSStandAloneTrackSPDvtx || analysisMode == kITSStandAloneTPCTrackSPDvtx)
197 requiredZResolution = 1000;
199 else if (analysisMode == kTPC)
200 requiredZResolution = 10.;
203 Double_t zRes = vertex->GetZRes();
205 if (zRes > requiredZResolution) {
207 Printf("AlidNdPtHelper::TestVertex: Resolution too poor %f (required: %f", zRes, requiredZResolution);
211 // always check for SPD vertex
212 if(!vertexSPD) return kFALSE;
213 if(!vertexSPD->GetStatus()) return kFALSE;
214 if (vertexSPD->IsFromVertexerZ())
216 if (vertexSPD->GetDispersion() > 0.02)
219 Printf("AliPWG0Helper::TestVertex: Delta Phi too large in Vertexer Z: %f (required: %f", vertex->GetDispersion(), 0.02);
228 //____________________________________________________________________
229 Bool_t AlidNdPtHelper::IsGoodImpPar(const AliESDtrack *const track)
232 // check whether particle has good DCAr(Pt) impact
233 // parameter. Only for TPC+ITS tracks (7*sigma cut)
234 // Origin: Andrea Dainese
237 Float_t d0z0[2],covd0z0[3];
238 track->GetImpactParameters(d0z0,covd0z0);
239 Float_t sigma= 0.0050+0.0060/TMath::Power(track->Pt(),0.9);
240 Float_t d0max = 7.*sigma;
241 if(TMath::Abs(d0z0[0]) < d0max) return kTRUE;
246 //____________________________________________________________________
247 Bool_t AlidNdPtHelper::IsPrimaryParticle(AliStack* const stack, Int_t idx, ParticleMode particleMode)
250 // check primary particles
251 // depending on the particle mode
253 if(!stack) return kFALSE;
255 TParticle* particle = stack->Particle(idx);
256 if (!particle) return kFALSE;
258 // only charged particles
259 Double_t charge = particle->GetPDG()->Charge()/3.;
260 if (TMath::Abs(charge) < 0.001) return kFALSE;
262 Int_t pdg = TMath::Abs(particle->GetPdgCode());
265 Bool_t prim = stack->IsPhysicalPrimary(idx);
267 if(particleMode==kMCPion) {
268 if(prim && pdg==kPiPlus) return kTRUE;
272 if (particleMode==kMCKaon) {
273 if(prim && pdg==kKPlus) return kTRUE;
277 if (particleMode==kMCProton) {
278 if(prim && pdg==kProton) return kTRUE;
282 if(particleMode==kMCRest) {
283 if(prim && pdg!=kPiPlus && pdg!=kKPlus && pdg!=kProton) return kTRUE;
290 //____________________________________________________________________
291 Bool_t AlidNdPtHelper::IsCosmicTrack(AliESDtrack *const track1, AliESDtrack *const track2)
294 // check cosmic tracks
296 if(!track1) return kFALSE;
297 if(!track2) return kFALSE;
300 // cosmic tracks in TPC
302 //if( TMath::Abs( track1->Theta() - track2->Theta() ) < 0.004 &&
303 // ((TMath::Abs(track1->Phi()-track2->Phi()) - TMath::Pi() )<0.004) &&
304 //if( track1->Pt() > 4.0 && (TMath::Abs(track1->Phi()-track2->Phi())-TMath::Pi())<0.1
305 // && (TMath::Abs(track1->Eta()+track2->Eta())-0.1) < 0.0 && (track1->Charge()+track2->Charge()) == 0)
307 //Float_t scaleF= 6.0;
308 if ( track1->Pt() > 4 && track2->Pt() > 4 &&
309 //(TMath::Abs(track1->GetSnp()-track2->GetSnp())-2.) < scaleF * TMath::Sqrt(track1->GetSigmaSnp2()+track2->GetSigmaSnp2()) &&
310 //TMath::Abs(track1->GetTgl()-track2->GetTgl()) < scaleF * TMath::Sqrt(track1->GetSigmaTgl2()+track2->GetSigmaTgl2()) &&
311 //TMath::Abs(track1->OneOverPt()-track2->OneOverPt()) < scaleF * TMath::Sqrt(track1->GetSigma1Pt2()+track2->GetSigma1Pt2()) &&
312 (track1->Charge()+track2->Charge()) == 0 &&
313 track1->Eta()*track2->Eta()<0.0 && TMath::Abs(track1->Eta()+track2->Eta())<0.03 &&
314 TMath::Abs(TMath::Abs(track1->Phi()-track2->Phi())-TMath::Pi())<0.1
317 printf("COSMIC candidate \n");
319 printf("track1->Pt() %f, track1->Theta() %f, track1->Eta() %f, track1->Phi() %f, track1->Charge() %d \n", track1->Pt(), track1->Theta(), track1->Eta(), track1->Phi(), track1->Charge());
320 printf("track2->Pt() %f, track2->Theta() %f, track2->Eta() %f, track2->Phi() %f, track2->Charge() %d \n", track2->Pt(), track2->Theta(), track2->Eta(), track2->Phi(), track2->Charge());
321 printf("dtheta %f, deta %f, dphi %f, dq %d \n", track1->Theta()-track2->Theta(), track1->Eta()-track2->Eta(), track1->Phi()-track2->Phi(), track1->Charge()+track2->Charge());
322 printf("dsphi %f, errsphi %f, dtanl %f, errtanl %f \n", TMath::Abs(track1->GetSnp()-track2->GetSnp()), TMath::Sqrt(track1->GetSigmaSnp2()+track2->GetSigmaSnp2()), TMath::Abs(track1->GetTgl()-track2->GetTgl()), TMath::Sqrt(track1->GetSigmaTgl2()+track2->GetSigmaTgl2()));
329 //____________________________________________________________________
330 void AlidNdPtHelper::PrintConf(AnalysisMode analysisMode, AliTriggerAnalysis::Trigger trigger)
333 // Prints the given configuration
336 TString str(">>>> Running with ");
338 switch (analysisMode)
340 case kInvalid: str += "invalid setting"; break;
341 case kSPD : str += "SPD-only"; break;
342 case kTPC : str += "TPC-only"; break;
343 case kTPCITS : str += "Global tracking"; break;
344 case kTPCSPDvtx : str += "TPC tracking + SPD event vertex"; break;
345 case kTPCSPDvtxUpdate : str += "TPC tracks updated with SPD event vertex point"; break;
346 case kTPCTrackSPDvtx : str += "TPC tracking + Tracks event vertex or SPD event vertex"; break;
347 case kTPCTrackSPDvtxUpdate : str += "TPC tracks updated with Track or SPD event vertex point"; break;
348 case kTPCITSHybrid : str += "TPC tracking + ITS refit + >1 SPD cluster"; break;
349 case kTPCITSHybridTrackSPDvtx : str += "TPC tracking + ITS refit + >1 SPD cluster + Tracks event vertex or SPD event vertex"; break;
350 case kTPCITSHybridTrackSPDvtxDCArPt : str += "TPC tracking + ITS refit + >1 SPD cluster + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
351 case kITSStandAloneTrackSPDvtx : str += "ITS standalone + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
352 case kITSStandAloneTPCTrackSPDvtx : str += "kITSStandAloneTPCTrackSPDvtx + TPC stand alone track + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
353 case kMCRec : str += "TPC tracking + Replace rec. with MC values"; break;
355 str += " and trigger ";
357 str += AliTriggerAnalysis::GetTriggerName(trigger);
361 Printf("%s", str.Data());
364 //____________________________________________________________________
365 Int_t AlidNdPtHelper::ConvertPdgToPid(const TParticle *const particle) {
367 // Convert Abs(pdg) to pid
368 // (0 - e, 1 - muons, 2 - pions, 3 - kaons, 4 - protons, 5 -all rest)
372 if (TMath::Abs(particle->GetPdgCode()) == kElectron) { pid = 0; }
373 else if (TMath::Abs(particle->GetPdgCode()) == kMuonMinus) { pid = 1; }
374 else if (TMath::Abs(particle->GetPdgCode()) == kPiPlus) { pid = 2; }
375 else if (TMath::Abs(particle->GetPdgCode()) == kKPlus) { pid = 3; }
376 else if (TMath::Abs(particle->GetPdgCode()) == kProton) { pid = 4; }
382 //_____________________________________________________________________________
383 TH1F* AlidNdPtHelper::CreateResHisto(TH2F* const hRes2, TH1F **phMean, Int_t integ, Bool_t drawBinFits, Int_t minHistEntries)
386 // Create mean and resolution
389 TVirtualPad* currentPad = gPad;
390 TAxis* axis = hRes2->GetXaxis();
391 Int_t nBins = axis->GetNbins();
392 //Bool_t overflowBinFits = kFALSE;
394 if (axis->GetXbins()->GetSize()){
395 hRes = new TH1F("hRes", "", nBins, axis->GetXbins()->GetArray());
396 hMean = new TH1F("hMean", "", nBins, axis->GetXbins()->GetArray());
399 hRes = new TH1F("hRes", "", nBins, axis->GetXmin(), axis->GetXmax());
400 hMean = new TH1F("hMean", "", nBins, axis->GetXmin(), axis->GetXmax());
403 hRes->SetStats(false);
404 hRes->SetOption("E");
405 hRes->SetMinimum(0.);
407 hMean->SetStats(false);
408 hMean->SetOption("E");
410 // create the fit function
411 TF1 * fitFunc = new TF1("G","[0]*exp(-(x-[1])*(x-[1])/(2.*[2]*[2]))",-3,3);
413 fitFunc->SetLineWidth(2);
414 fitFunc->SetFillStyle(0);
415 // create canvas for fits
416 TCanvas* canBinFits = NULL;
417 //Int_t nPads = (overflowBinFits) ? nBins+2 : nBins;
419 Int_t nx = Int_t(sqrt(nPads-1.));// + 1;
420 Int_t ny = (nPads-1) / nx + 1;
422 canBinFits = (TCanvas*)gROOT->FindObject("canBinFits");
423 if (canBinFits) delete canBinFits;
424 canBinFits = new TCanvas("canBinFits", "fits of bins", 200, 100, 500, 700);
425 canBinFits->Divide(nx, ny);
428 // loop over x bins and fit projection
429 //Int_t dBin = ((overflowBinFits) ? 1 : 0);
431 for (Int_t bin = 1-dBin; bin <= nBins+dBin; bin++) {
432 if (drawBinFits) canBinFits->cd(bin + dBin);
433 Int_t bin0=TMath::Max(bin-integ,0);
434 Int_t bin1=TMath::Min(bin+integ,nBins);
435 TH1D* hBin = hRes2->ProjectionY("hBin", bin0, bin1);
437 if (hBin->GetEntries() > minHistEntries) {
438 fitFunc->SetParameters(hBin->GetMaximum(),hBin->GetMean(),hBin->GetRMS());
439 hBin->Fit(fitFunc,"s");
440 Double_t sigma = TMath::Abs(fitFunc->GetParameter(2));
443 hRes->SetBinContent(bin, TMath::Abs(fitFunc->GetParameter(2)));
444 hMean->SetBinContent(bin, fitFunc->GetParameter(1));
447 hRes->SetBinContent(bin, 0.);
448 hMean->SetBinContent(bin,0);
450 hRes->SetBinError(bin, fitFunc->GetParError(2));
451 hMean->SetBinError(bin, fitFunc->GetParError(1));
457 hRes->SetBinContent(bin, 0.);
458 hRes->SetBinError(bin, 0.);
459 hMean->SetBinContent(bin, 0.);
460 hMean->SetBinError(bin, 0.);
467 snprintf(name,256, "%s < %.4g", axis->GetTitle(), axis->GetBinUpEdge(bin));
468 } else if (bin == nBins+1) {
469 snprintf(name,256, "%.4g < %s", axis->GetBinLowEdge(bin), axis->GetTitle());
471 snprintf(name,256, "%.4g < %s < %.4g", axis->GetBinLowEdge(bin),
472 axis->GetTitle(), axis->GetBinUpEdge(bin));
474 canBinFits->cd(bin + dBin);
475 hBin->SetTitle(name);
476 hBin->SetStats(kTRUE);
478 canBinFits->Update();
479 canBinFits->Modified();
480 canBinFits->Update();
492 //_____________________________________________________________________________
493 TH1F* AlidNdPtHelper::MakeResol(TH2F * his, Int_t integ, Bool_t type, Bool_t drawBins, Int_t minHistEntries){
494 // Create resolution histograms
496 TH1F *hisr=0, *hism=0;
497 if (!gPad) new TCanvas;
498 hisr = CreateResHisto(his,&hism,integ,drawBins,minHistEntries);
499 if (type) return hism;
505 //_____________________________________________________________________________
506 TObjArray* AlidNdPtHelper::GetAllChargedTracks(AliESDEvent *esdEvent, AnalysisMode analysisMode)
509 // all charged TPC particles
511 TObjArray *allTracks = new TObjArray();
512 if(!allTracks) return allTracks;
514 AliESDtrack *track=0;
515 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
517 if(analysisMode == AlidNdPtHelper::kTPC) {
519 // track must be deleted by user
520 // esd track parameters are replaced by TPCinner
522 track = AliESDtrackCuts::GetTPCOnlyTrack(esdEvent,iTrack);
525 else if (analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate)
528 // track must be deleted by the user
529 // esd track parameters are replaced by TPCinner
531 track = AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(esdEvent,iTrack,kFALSE);
534 else if (analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
537 // track must be deleted by the user
538 // esd track parameters are replaced by TPCinner
540 track = AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
543 else if(analysisMode == AlidNdPtHelper::kTPCITSHybrid )
545 track = AlidNdPtHelper::GetTrackSPDvtx(esdEvent,iTrack,kFALSE);
547 else if(analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtxDCArPt || analysisMode == AlidNdPtHelper::kITSStandAloneTrackSPDvtx || analysisMode ==AlidNdPtHelper::kITSStandAloneTPCTrackSPDvtx)
549 track = AlidNdPtHelper::GetTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
553 track = esdEvent->GetTrack(iTrack);
558 if(track->Charge()==0) {
559 if(analysisMode == AlidNdPtHelper::kTPC ||
560 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
561 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
563 delete track; continue;
569 allTracks->Add(track);
572 if(analysisMode == AlidNdPtHelper::kTPC ||
573 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
574 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate) {
576 allTracks->SetOwner(kTRUE);
582 //_____________________________________________________________________________
583 AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
586 // Create ESD tracks from TPCinner parameters.
587 // Propagte to DCA to SPD vertex.
588 // Update using SPD vertex point (parameter)
590 // It is user responsibility to delete these tracks
593 if (!esdEvent) return NULL;
594 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
595 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
598 AliESDtrack* track = esdEvent->GetTrack(iTrack);
602 Bool_t isOK = kFALSE;
603 Double_t x[3]; track->GetXYZ(x);
604 Double_t b[3]; AliTracker::GetBxByBz(x,b);
606 // create new ESD track
607 AliESDtrack *tpcTrack = new AliESDtrack();
609 // relate TPC-only tracks (TPCinner) to SPD vertex
610 AliExternalTrackParam cParam;
612 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
613 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
615 // reject fake tracks
616 if(track->Pt() > 10000.) {
617 ::Error("Exclude no physical tracks","pt>10000. GeV");
623 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
626 // only true if we have a tpc track
627 if (!track->FillTPCOnlyTrack(*tpcTrack))
633 if(!isOK) return NULL;
638 //_____________________________________________________________________________
639 AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
642 // Create ESD tracks from TPCinner parameters.
643 // Propagte to DCA to Track or SPD vertex.
644 // Update using SPD vertex point (parameter)
646 // It is user responsibility to delete these tracks
648 if (!esdEvent) return NULL;
649 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
650 if(vertex->GetNContributors()<1) {
652 vertex = esdEvent->GetPrimaryVertexSPD();
654 if(!vertex) return NULL;
657 AliESDtrack* track = esdEvent->GetTrack(iTrack);
661 Bool_t isOK = kFALSE;
662 Double_t x[3]; track->GetXYZ(x);
663 Double_t b[3]; AliTracker::GetBxByBz(x,b);
665 // create new ESD track
666 AliESDtrack *tpcTrack = new AliESDtrack();
668 // relate TPC-only tracks (TPCinner) to SPD vertex
669 AliExternalTrackParam cParam;
671 isOK = track->RelateToVertexTPCBxByBz(vertex,b,kVeryBig,&cParam);
672 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
674 // reject fake tracks
675 if(track->Pt() > 10000.) {
676 ::Error("Exclude no physical tracks","pt>10000. GeV");
682 isOK = track->RelateToVertexTPCBxByBz(vertex, b, kVeryBig);
685 // only true if we have a tpc track
686 if (!track->FillTPCOnlyTrack(*tpcTrack))
692 if(!isOK) return NULL;
697 //_____________________________________________________________________________
698 AliESDtrack *AlidNdPtHelper::GetTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
701 // Propagte track to DCA to SPD vertex.
702 // Update using SPD vertex point (parameter)
704 if (!esdEvent) return NULL;
705 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
706 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
709 AliESDtrack* track = esdEvent->GetTrack(iTrack);
713 Bool_t isOK = kFALSE;
714 Double_t x[3]; track->GetXYZ(x);
715 Double_t b[3]; AliTracker::GetBxByBz(x,b);
717 // relate tracks to SPD vertex
718 AliExternalTrackParam cParam;
720 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
721 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
723 // reject fake tracks
724 if(track->Pt() > 10000.) {
725 ::Error("Exclude no physical tracks","pt>10000. GeV");
730 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
733 if(!isOK) return NULL;
738 //_____________________________________________________________________________
739 AliESDtrack *AlidNdPtHelper::GetTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
742 // Propagte track to DCA to Track or SPD vertex.
743 // Update using SPD vertex point (parameter)
745 if (!esdEvent) return NULL;
747 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
748 if(vertex->GetNContributors()<1) {
750 vertex = esdEvent->GetPrimaryVertexSPD();
752 if(!vertex) return NULL;
755 AliESDtrack* track = esdEvent->GetTrack(iTrack);
759 Bool_t isOK = kFALSE;
760 Double_t x[3]; track->GetXYZ(x);
761 Double_t b[3]; AliTracker::GetBxByBz(x,b);
763 // relate tracks to SPD vertex
764 AliExternalTrackParam cParam;
766 isOK = track->RelateToVertexBxByBz(vertex,b,kVeryBig,&cParam);
767 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
769 // reject fake tracks
770 if(track->Pt() > 10000.) {
771 ::Error("Exclude no physical tracks","pt>10000. GeV");
776 isOK = track->RelateToVertexBxByBz(vertex, b, kVeryBig);
779 if(!isOK) return NULL;
784 //_____________________________________________________________________________
785 Bool_t AlidNdPtHelper::SelectEvent(const AliESDEvent* const esdEvent, AliESDtrackCuts* const esdTrackCuts) {
786 // select events with at least
787 // one reconstructed primary track in acceptance
788 // pT>0.5 GeV/c, |eta|<0.8 for cross section studies
790 if(!esdEvent) return kFALSE;
791 if(!esdTrackCuts) return kFALSE;
793 AliESDtrack *track=0;
795 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
797 track = esdEvent->GetTrack(iTrack);
799 if(track->Charge()==0) continue;
800 if(!esdTrackCuts->AcceptTrack(track)) continue;
801 if(track->Pt() < 0.5) continue;
802 if(TMath::Abs(track->Eta()) > 0.8) continue;
807 if(count > 0) return kTRUE;
813 //_____________________________________________________________________________
814 Bool_t AlidNdPtHelper::SelectMCEvent(AliMCEvent* const mcEvent) {
816 // select events with at least
817 // one prompt (MC primary) track in acceptance
818 // pT>0.5 GeV/c, |eta|<0.8 for cross section studies
821 if(!mcEvent) return kFALSE;
822 AliStack* stack = mcEvent->Stack();
823 if(!stack) return kFALSE;
826 for (Int_t iMc = 0; iMc < stack->GetNtrack(); ++iMc)
828 TParticle* particle = stack->Particle(iMc);
829 if (!particle) continue;
831 // only charged particles
832 if(!particle->GetPDG()) continue;
833 Double_t charge = particle->GetPDG()->Charge()/3.;
834 if(charge == 0) continue;
837 Bool_t prim = stack->IsPhysicalPrimary(iMc);
840 if(particle->Pt() < 0.5) continue;
841 if(TMath::Abs(particle->Eta()) > 0.8) continue;
846 if(count > 0) return kTRUE;
852 //_____________________________________________________________________________
853 Int_t AlidNdPtHelper::GetTPCMBTrackMult(const AliESDEvent *const esdEvent,const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts,const AliESDtrackCuts *const trackCuts)
856 // get MB event track multiplicity
860 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","esd event is NULL");
864 if(!evtCuts || !accCuts || !trackCuts)
866 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","cuts not available");
871 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
872 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
873 AliESDVertex vtx0(pos,err);
876 Float_t maxDCAr = accCuts->GetMaxDCAr();
877 Float_t maxDCAz = accCuts->GetMaxDCAz();
878 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
880 Int_t ntracks = esdEvent->GetNumberOfTracks();
881 Double_t dca[2],cov[3];
883 for (Int_t i=0;i <ntracks; i++){
884 AliESDtrack *t = esdEvent->GetTrack(i);
886 if (t->Charge() == 0) continue;
887 if (!t->GetTPCInnerParam()) continue;
888 if (t->GetTPCNcls()<minTPCClust) continue;
890 Double_t x[3]; t->GetXYZ(x);
891 Double_t b[3]; AliTracker::GetBxByBz(x,b);
892 const Double_t kMaxStep = 1; //max step over the material
894 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
895 if(!tpcTrack) return 0;
897 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
899 if(tpcTrack) delete tpcTrack;
903 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
904 if(tpcTrack) delete tpcTrack;
910 if(tpcTrack) delete tpcTrack;
916 //_____________________________________________________________________________
917 Int_t AlidNdPtHelper::GetTPCMBPrimTrackMult(const AliESDEvent *const esdEvent, AliStack *const stack, const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts, const AliESDtrackCuts *const trackCuts)
920 // get MB primary event track multiplicity
924 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
930 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
934 if(!evtCuts || !accCuts || !trackCuts)
936 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","cuts not available");
941 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
942 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
943 AliESDVertex vtx0(pos,err);
946 Float_t maxDCAr = accCuts->GetMaxDCAr();
947 Float_t maxDCAz = accCuts->GetMaxDCAz();
948 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
951 Int_t ntracks = esdEvent->GetNumberOfTracks();
952 Double_t dca[2],cov[3];
954 for (Int_t i=0;i <ntracks; i++){
955 AliESDtrack *t = esdEvent->GetTrack(i);
957 if (t->Charge() == 0) continue;
958 if (!t->GetTPCInnerParam()) continue;
959 if (t->GetTPCNcls()<minTPCClust) continue;
961 Double_t x[3]; t->GetXYZ(x);
962 Double_t b[3]; AliTracker::GetBxByBz(x,b);
963 const Double_t kMaxStep = 1; //max step over the material
965 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
966 if(!tpcTrack) return 0;
968 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
970 if(tpcTrack) delete tpcTrack;
974 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
975 if(tpcTrack) delete tpcTrack;
979 Int_t label = TMath::Abs(t->GetLabel());
980 TParticle *part = stack->Particle(label);
982 if(tpcTrack) delete tpcTrack;
985 if(!stack->IsPhysicalPrimary(label))
987 if(tpcTrack) delete tpcTrack;
993 if(tpcTrack) delete tpcTrack;
1000 //_____________________________________________________________________________
1001 Double_t AlidNdPtHelper::GetStrangenessCorrFactor(const Double_t pt)
1003 // data driven correction factor for secondaries
1004 // underestimated secondaries with strangeness in Pythia (A. Dainese)
1008 // pt=0.4; fact=1.07
1009 // pt=0.6; fact=1.25
1010 // pt>=1.2; fact=1.5
1013 if (pt <= 0.17) return 1.0;
1014 if (pt <= 0.4) return GetLinearInterpolationValue(0.17,1.0,0.4,1.07, pt);
1015 if (pt <= 0.6) return GetLinearInterpolationValue(0.4,1.07,0.6,1.25, pt);
1016 if (pt <= 1.2) return GetLinearInterpolationValue(0.6,1.25,1.2,1.5, pt);
1021 //_____________________________________________________________________________
1022 Double_t AlidNdPtHelper::GetStrangenessCorrFactorPbPb(const Double_t pt)
1024 // data driven correction factor for secondaries (PbPb)
1026 if (pt <= 0.25) return 1.0;
1027 if (pt <= 0.5) return GetLinearInterpolationValue(0.25,1.0,0.5,1.4, pt);
1028 if (pt <= 1.0) return GetLinearInterpolationValue(0.5,1.4,1.0,1.47, pt);
1029 if (pt <= 2.0) return GetLinearInterpolationValue(1.0,1.47,2.0,1.56, pt);
1030 if (pt <= 5.0) return GetLinearInterpolationValue(2.0,1.56,5.0,1.67, pt);
1035 //___________________________________________________________________________
1036 Double_t AlidNdPtHelper::GetLinearInterpolationValue(const Double_t x1,const Double_t y1,const Double_t x2,const Double_t y2, const Double_t pt)
1039 // linear interpolation
1041 return ((y2-y1)/(x2-x1))*pt+(y2-(((y2-y1)/(x2-x1))*x2));
1044 //_____________________________________________________________________________
1045 Int_t AlidNdPtHelper::GetMCTrueTrackMult(AliMCEvent *const mcEvent, AlidNdPtEventCuts *const evtCuts, AlidNdPtAcceptanceCuts *const accCuts)
1048 // calculate mc event true track multiplicity
1050 if(!mcEvent) return 0;
1052 AliStack* stack = 0;
1055 // MC particle stack
1056 stack = mcEvent->Stack();
1057 if (!stack) return 0;
1060 //printf("minZv %f, maxZv %f \n", evtCuts->GetMinZv(), evtCuts->GetMaxZv());
1063 Bool_t isEventOK = evtCuts->AcceptMCEvent(mcEvent);
1064 if(!isEventOK) return 0;
1066 Int_t nPart = stack->GetNtrack();
1067 for (Int_t iMc = 0; iMc < nPart; ++iMc)
1069 TParticle* particle = stack->Particle(iMc);
1073 // only charged particles
1074 if(!particle->GetPDG()) continue;
1075 Double_t charge = particle->GetPDG()->Charge()/3.;
1076 if (TMath::Abs(charge) < 0.001)
1080 Bool_t prim = stack->IsPhysicalPrimary(iMc);
1083 // checked accepted including pt cut
1084 //if(accCuts->AcceptTrack(particle))
1085 if( particle->Eta() > accCuts->GetMinEta() && particle->Eta() < accCuts->GetMaxEta() && particle->Pt() > accCuts->GetMinPt() && particle->Pt() < accCuts->GetMaxPt() )
1095 //_____________________________________________________________________________
1096 Int_t AlidNdPtHelper::GetMCTrueTrackMult(AliMCEvent *const mcEvent, AlidNdPtEventCuts *const evtCuts, AlidNdPtAcceptanceCuts *const accCuts, Double_t yShift)
1099 // calculate mc event true track multiplicity
1101 if(!mcEvent) return 0;
1103 AliStack* stack = 0;
1106 // MC particle stack
1107 stack = mcEvent->Stack();
1108 if (!stack) return 0;
1111 //printf("minZv %f, maxZv %f \n", evtCuts->GetMinZv(), evtCuts->GetMaxZv());
1114 Bool_t isEventOK = evtCuts->AcceptMCEvent(mcEvent);
1115 if(!isEventOK) return 0;
1117 Int_t nPart = stack->GetNtrack();
1118 for (Int_t iMc = 0; iMc < nPart; ++iMc)
1120 TParticle* particle = stack->Particle(iMc);
1124 // only charged particles
1125 if(!particle->GetPDG()) continue;
1126 Double_t charge = particle->GetPDG()->Charge()/3.;
1127 if (TMath::Abs(charge) < 0.001)
1131 Bool_t prim = stack->IsPhysicalPrimary(iMc);
1134 // checked accepted without pt cut
1135 //if(accCuts->AcceptTrack(particle))
1136 if (TMath::Abs(particle->Eta()) > 100.) continue;
1138 Double_t etacms = TMath::ASinH((TMath::CosH(yShift)*TMath::SinH(particle->Eta())) - (TMath::SinH(yShift)*particle->Energy()/particle->Pt()));
1139 Double_t minetacms = accCuts->GetMinEta()-yShift;
1140 Double_t maxetacms = accCuts->GetMaxEta()-yShift;
1142 // checked accepted including pt cut
1143 //if(accCuts->AcceptTrack(particle))
1144 if( etacms > minetacms && etacms < maxetacms && particle->Pt() > accCuts->GetMinPt() && particle->Pt() < accCuts->GetMaxPt() )
1153 //_______________________________________________________________________
1154 void AlidNdPtHelper::PrintMCInfo(AliStack *const pStack,Int_t label)
1156 // print information about particles in the stack
1159 label = TMath::Abs(label);
1160 TParticle *part = pStack->Particle(label);
1161 Printf("########################");
1162 Printf("%s:%d %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,label,part->GetUniqueID(),part->GetPdgCode(),part->P());
1164 TParticle* mother = part;
1165 Int_t imo = part->GetFirstMother();
1166 Int_t nprim = pStack->GetNprimary();
1168 while((imo >= nprim)) {
1169 mother = pStack->Particle(imo);
1170 Printf("Mother %s:%d Label %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,imo,mother->GetUniqueID(),mother->GetPdgCode(),mother->P());
1172 imo = mother->GetFirstMother();
1175 Printf("########################");
1179 //_____________________________________________________________________________
1180 TH1* AlidNdPtHelper::GetContCorrHisto(TH1 *const hist)
1183 // get contamination histogram
1187 Int_t nbins = hist->GetNbinsX();
1188 TH1 *hCont = (TH1D *)hist->Clone();
1190 for(Int_t i=0; i<=nbins+1; i++) {
1191 Double_t binContent = hist->GetBinContent(i);
1192 Double_t binError = hist->GetBinError(i);
1194 hCont->SetBinContent(i,1.-binContent);
1195 hCont->SetBinError(i,binError);
1202 //_____________________________________________________________________________
1203 TH1* AlidNdPtHelper::ScaleByBinWidth(TH1 *const hist)
1206 // scale by bin width
1210 TH1 *hScale = (TH1D *)hist->Clone();
1211 hScale->Scale(1.,"width");
1216 //_____________________________________________________________________________
1217 TH1* AlidNdPtHelper::CalcRelativeDifference(const TH1 *const hist1, const TH1 *const hist2)
1220 // calculate rel. difference
1223 if(!hist1) return 0;
1224 if(!hist2) return 0;
1226 TH1 *h1Clone = (TH1D *)hist1->Clone();
1230 h1Clone->Add(hist2,-1);
1231 h1Clone->Divide(hist2);
1236 //_____________________________________________________________________________
1237 TH1* AlidNdPtHelper::CalcRelativeDifferenceFun(const TH1 *const hist1, TF1 *const fun)
1240 // calculate rel. difference
1241 // between histogram and function
1243 if(!hist1) return 0;
1246 TH1 *h1Clone = (TH1D *)hist1->Clone();
1250 h1Clone->Add(fun,-1);
1251 h1Clone->Divide(hist1);
1256 //_____________________________________________________________________________
1257 TH1* AlidNdPtHelper::NormalizeToEvent(const TH2 *const hist1, const TH1 *const hist2)
1259 // normalise to event for a given multiplicity bin
1260 // return pt histogram
1262 if(!hist1) return 0;
1263 if(!hist2) return 0;
1266 Int_t nbinsX = hist1->GetNbinsX();
1267 //Int_t nbinsY = hist1->GetNbinsY();
1270 for(Int_t i=0; i<=nbinsX+1; i++) {
1271 snprintf(name,256,"mom_%d",i);
1272 TH1D *hist = (TH1D*)hist1->ProjectionY(name,i+1,i+1);
1274 snprintf(name,256,"mom_norm");
1276 histNorm = (TH1D *)hist->Clone(name);
1280 Double_t nbEvents = hist2->GetBinContent(i);
1281 if(!nbEvents) { nbEvents = 1.; };
1283 hist->Scale(1./nbEvents);
1284 histNorm->Add(hist);
1290 //_____________________________________________________________________________
1291 //THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, char *const name) {
1292 THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char *name) {
1293 // generate correction matrix
1294 if(!hist1 || !hist2) return 0;
1296 THnSparse *h =(THnSparse*)hist1->Clone(name);
1297 h->Divide(hist1,hist2,1,1,"B");
1302 //_____________________________________________________________________________
1303 //TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1304 TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char *name) {
1305 // generate correction matrix
1306 if(!hist1 || !hist2) return 0;
1308 TH2D *h =(TH2D*)hist1->Clone(name);;
1309 h->Divide(hist1,hist2,1,1,"B");
1314 //_____________________________________________________________________________
1315 //TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1316 TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
1317 // generate correction matrix
1318 if(!hist1 || !hist2) return 0;
1320 TH1D *h =(TH1D*)hist1->Clone(name);;
1321 h->Divide(hist1,hist2,1,1,"B");
1326 //_____________________________________________________________________________
1327 //THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, THnSparse *const hist2, char *const name) {
1328 THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char* name) {
1329 // generate contamination correction matrix
1330 if(!hist1 || !hist2) return 0;
1332 THnSparse *hist = GenerateCorrMatrix(hist1, hist2, name);
1335 // only for non ZERO bins!!!!
1337 Int_t* coord = new Int_t[hist->GetNdimensions()];
1338 memset(coord, 0, sizeof(Int_t) * hist->GetNdimensions());
1340 for (Long64_t i = 0; i < hist->GetNbins(); ++i) {
1341 Double_t v = hist->GetBinContent(i, coord);
1342 hist->SetBinContent(coord, 1.0-v);
1343 //printf("v %f, hist->GetBinContent(i, coord) %f \n",v,hist->GetBinContent(i, coord));
1344 Double_t err = hist->GetBinError(coord);
1345 hist->SetBinError(coord, err);
1353 //_____________________________________________________________________________
1354 //TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1355 TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char* name) {
1356 // generate contamination correction matrix
1357 if(!hist1 || !hist2) return 0;
1359 TH2 *hist = GenerateCorrMatrix(hist1, hist2, name);
1362 Int_t nBinsX = hist->GetNbinsX();
1363 Int_t nBinsY = hist->GetNbinsY();
1365 for (Int_t i = 0; i < nBinsX+1; i++) {
1366 for (Int_t j = 0; j < nBinsY+1; j++) {
1367 Double_t cont = hist->GetBinContent(i,j);
1368 hist->SetBinContent(i,j,1.-cont);
1369 Double_t err = hist->GetBinError(i,j);
1370 hist->SetBinError(i,j,err);
1377 //_____________________________________________________________________________
1378 //TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1379 TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
1380 // generate contamination correction matrix
1381 if(!hist1 || !hist2) return 0;
1383 TH1 *hist = GenerateCorrMatrix(hist1, hist2, name);
1386 Int_t nBinsX = hist->GetNbinsX();
1388 for (Int_t i = 0; i < nBinsX+1; i++) {
1389 Double_t cont = hist->GetBinContent(i);
1390 hist->SetBinContent(i,1.-cont);
1391 Double_t err = hist->GetBinError(i);
1392 hist->SetBinError(i,err);
1398 //_____________________________________________________________________________
1399 const AliESDVertex* AlidNdPtHelper::GetTPCVertexZ(const AliESDEvent* const esdEvent, const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts, const AliESDtrackCuts *const trackCuts, Float_t fraction, Int_t ntracksMin){
1405 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1409 if(!evtCuts || !accCuts || !trackCuts)
1411 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1415 Double_t vtxpos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
1416 Double_t vtxsigma[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
1417 AliESDVertex vtx0(vtxpos,vtxsigma);
1419 Double_t maxDCAr = accCuts->GetMaxDCAr();
1420 Double_t maxDCAz = accCuts->GetMaxDCAz();
1421 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
1424 Int_t ntracks = esdEvent->GetNumberOfTracks();
1425 TVectorD ztrack(ntracks);
1426 Double_t dca[2],cov[3];
1428 for (Int_t i=0;i <ntracks; i++){
1429 AliESDtrack *t = esdEvent->GetTrack(i);
1431 if (!t->GetTPCInnerParam()) continue;
1432 if (t->GetTPCNcls()<minTPCClust) continue;
1435 Double_t x[3]; t->GetXYZ(x);
1436 Double_t b[3]; AliTracker::GetBxByBz(x,b);
1437 const Double_t kMaxStep = 1; //max step over the material
1439 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
1440 if(!tpcTrack) return 0;
1441 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov)) continue;
1444 if (TMath::Abs(dca[0])>maxDCAr) continue;
1445 //if (TMath::Sqrt(cov[0])>sigmaXYcut) continue;
1446 if (TMath::Abs(tpcTrack->GetZ())>maxDCAz) continue;
1448 ztrack[counter]=tpcTrack->GetZ();
1451 if(tpcTrack) delete tpcTrack;
1455 // Find LTM z position
1457 Double_t mean=0, sigma=0;
1458 if (counter<ntracksMin) return 0;
1460 Int_t nused = TMath::Nint(counter*fraction);
1461 if (nused==counter) nused=counter-1;
1463 AliMathBase::EvaluateUni(counter, ztrack.GetMatrixArray(), mean,sigma, TMath::Nint(counter*fraction));
1464 sigma/=TMath::Sqrt(nused);
1466 mean = TMath::Mean(counter, ztrack.GetMatrixArray());
1467 sigma = TMath::RMS(counter, ztrack.GetMatrixArray());
1468 sigma/=TMath::Sqrt(counter-1);
1472 const AliESDVertex* vertex = new AliESDVertex(vtxpos, vtxsigma);
1476 //_____________________________________________________________________________
1477 Int_t AlidNdPtHelper::GetSPDMBTrackMult(const AliESDEvent* const esdEvent, Float_t deltaThetaCut, Float_t deltaPhiCut)
1480 // SPD track multiplicity
1484 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1488 // get multiplicity from SPD tracklets
1489 Int_t inputCount = 0;
1490 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1492 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1494 Float_t phi = mult->GetPhi(i);
1496 phi += TMath::Pi() * 2;
1497 Float_t deltaPhi = mult->GetDeltaPhi(i);
1498 Float_t deltaTheta = mult->GetDeltaTheta(i);
1500 if (TMath::Abs(deltaPhi) > 1)
1501 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1503 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1506 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1515 //_____________________________________________________________________________
1516 Int_t AlidNdPtHelper::GetSPDMBPrimTrackMult(const AliESDEvent* const esdEvent, AliStack* const stack, Float_t deltaThetaCut, Float_t deltaPhiCut)
1519 // SPD track multiplicity
1523 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1527 // get multiplicity from SPD tracklets
1528 Int_t inputCount = 0;
1529 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1531 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1533 Float_t phi = mult->GetPhi(i);
1535 phi += TMath::Pi() * 2;
1536 Float_t deltaPhi = mult->GetDeltaPhi(i);
1537 Float_t deltaTheta = mult->GetDeltaTheta(i);
1539 if (TMath::Abs(deltaPhi) > 1)
1540 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1542 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1545 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1549 if (mult->GetLabel(i, 0) < 0 || mult->GetLabel(i, 0) != mult->GetLabel(i, 1) ||
1550 !stack->IsPhysicalPrimary(mult->GetLabel(i, 0)))
1560 //_____________________________________________________________________________
1562 THnSparse* AlidNdPtHelper::RebinTHnSparse(const THnSparse* hist1, THnSparse* hist2, const Char_t* newname, Option_t* option)
1564 THnSparse* htemp = 0;
1565 const THnSparse* hist = 0;
1566 TString opt = option;
1568 Bool_t calcErrors = kFALSE;
1569 Bool_t useRange = kFALSE;
1570 Bool_t overwrite = kFALSE;
1571 if (opt.Contains("e")) { calcErrors = kTRUE; } // calcluate correct errors (not implemented)
1572 if (opt.Contains("r")) { useRange = kTRUE; } // use the axis range given in hist1
1573 if (opt.Contains("o")) { overwrite = kTRUE; } // overwrite hist2 instead of creating a new one
1574 Int_t ndim = hist1->GetNdimensions();
1575 if (ndim != hist2->GetNdimensions()) {
1576 printf("AlidNdPtHelper::RebinTHnSparse: ERROR: Histograms have different dimensions \n");
1579 Int_t* dims = new Int_t[ndim];
1580 for (Int_t i = 0; i < ndim; i++) { dims[i] = i; }
1582 htemp = hist1->Projection(ndim,dims,"e");
1584 } else { hist = hist1; }
1585 //THnSparse* hnew = hist2->Projection(ndim,dims,"o");
1586 //hnew->SetName(newname);
1587 THnSparse* hnew = 0;
1591 hnew = (THnSparse*) hist2->Clone(newname);
1593 for (Int_t i = 0; i < ndim; i++) { hnew->GetAxis(i)->SetRange(); }
1594 hnew->SetTitle(hist1->GetTitle());
1599 Int_t* c = new Int_t[ndim];
1600 Double_t* x = new Double_t[ndim];
1601 Long64_t n = hist->GetNbins();
1602 for (Long64_t j = 0; j < n; j++) {
1603 content = hist->GetBinContent(j,c);
1604 error = hist->GetBinError(j);
1605 for (Int_t i = 0; i < ndim; i++) {
1606 x[i] = hist->GetAxis(i)->GetBinCenter(c[i]);
1608 /* function IsInRange is protected, shit!
1610 if (! hist1->IsInRange(c)) continue;
1614 // implementation to be done
1616 hnew->Fill(x,content);
1621 delete[] dims; dims=0;
1622 if (htemp) { delete htemp; htemp = 0;}
1626 //_____________________________________________________________________________
1627 AliPWG0Helper::MCProcessType AlidNdPtHelper::GetEventProcessTypePA(AliHeader* aHeader, Bool_t adebug) {
1629 // get the process type of the event.
1633 // Check for simple headers first
1635 AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader->GenEventHeader());
1636 if (dpmJetGenHeader) {
1637 return GetDPMjetEventProcessTypePA(dpmJetGenHeader,adebug);
1640 // only dpmjet currently supported
1642 AliGenPythiaEventHeader* pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(aHeader->GenEventHeader());
1643 if (pythiaGenHeader) {
1644 return AliPWG0Helper::GetPythiaEventProcessType(pythiaGenHeader,adebug);
1648 // check for cocktail
1650 AliGenCocktailEventHeader* genCocktailHeader = dynamic_cast<AliGenCocktailEventHeader*>(aHeader->GenEventHeader());
1651 if (!genCocktailHeader) {
1652 printf("AlidNdPtHelper::GetEventProcessTypePA : Unknown header type. \n");
1653 return AliPWG0Helper::kInvalidProcess;
1656 TList* headerList = genCocktailHeader->GetHeaders();
1658 return AliPWG0Helper::kInvalidProcess;
1661 for (Int_t i=0; i<headerList->GetEntries(); i++) {
1663 pythiaGenHeader = dynamic_cast<AliGenPythiaEventHeader*>(headerList->At(i));
1664 if (pythiaGenHeader) {
1665 return AliPWG0Helper::GetPythiaEventProcessType(pythiaGenHeader,adebug);
1669 dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(headerList->At(i));
1670 if (dpmJetGenHeader) {
1671 return GetDPMjetEventProcessTypePA(dpmJetGenHeader,adebug);
1674 return AliPWG0Helper::kInvalidProcess;
1678 //_____________________________________________________________________________
1679 AliPWG0Helper::MCProcessType AlidNdPtHelper::GetDPMjetEventProcessTypePA(AliGenEventHeader* aHeader, Bool_t adebug) {
1681 // get the process type of the event.
1682 // here kSD means (pure) single diffractive
1683 // and kND means non-single-diffractive
1685 // can only read pythia headers, either directly or from cocktalil header
1686 AliGenDPMjetEventHeader* dpmJetGenHeader = dynamic_cast<AliGenDPMjetEventHeader*>(aHeader);
1688 if (!dpmJetGenHeader) {
1689 printf("AlidNdPtHelper::GetDPMjetProcessTypePA : Unknown header type (not DPMjet or). \n");
1690 return AliPWG0Helper::kInvalidProcess;
1693 Int_t nsd1=0, nsd2=0, ndd=0;
1694 dpmJetGenHeader->GetNDiffractive(nsd1,nsd2,ndd);
1696 printf("%d+%d->%d %d\n",dpmJetGenHeader->ProjectileParticipants(),dpmJetGenHeader->TargetParticipants(),nsd1,nsd2);
1698 if((dpmJetGenHeader->ProjectileParticipants()==nsd1) && (ndd==0)) { return AliPWG0Helper::kSD; }
1699 else if ((dpmJetGenHeader->ProjectileParticipants()==nsd2) && (ndd==0)) { return AliPWG0Helper::kSD; }
1700 else { return AliPWG0Helper::kND; }