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 *
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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
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 "dNdPt/AlidNdPtEventCuts.h"
45 #include "dNdPt/AlidNdPtAcceptanceCuts.h"
46 #include "dNdPt/AlidNdPtHelper.h"
48 //____________________________________________________________________
49 ClassImp(AlidNdPtHelper)
51 //____________________________________________________________________
52 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)
54 // Get the vertex from the ESD and returns it if the vertex is valid
56 // Second argument decides which vertex is used (this selects
57 // also the quality criteria that are applied)
61 ::Error("AlidNdPtHelper::GetVertex()","esd event is NULL");
65 if(!evtCuts || !accCuts || !trackCuts)
67 ::Error("AlidNdPtHelper::GetVertex()","cuts not available");
71 const AliESDVertex* vertex = 0;
72 AliESDVertex *initVertex = 0;
73 if (analysisMode == kSPD ||
74 analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate || analysisMode == kTPCITSHybrid)
76 vertex = aEsd->GetPrimaryVertexSPD();
78 Printf("AlidNdPtHelper::GetVertex: Returning SPD vertex");
80 else if (analysisMode == kTPCITS || analysisMode == kTPCTrackSPDvtx || analysisMode == kTPCTrackSPDvtxUpdate ||
81 analysisMode == kTPCITSHybridTrackSPDvtx || analysisMode == kTPCITSHybridTrackSPDvtxDCArPt ||
82 analysisMode == kITSStandAloneTrackSPDvtx || analysisMode == kITSStandAloneTPCTrackSPDvtx)
84 vertex = aEsd->GetPrimaryVertexTracks();
85 if(!vertex) return NULL;
86 if(vertex->GetNContributors()<1) {
88 vertex = aEsd->GetPrimaryVertexSPD();
91 else if (analysisMode == kTPC)
95 Double_t kBz = aEsd->GetMagneticField();
96 AliVertexerTracks vertexer(kBz);
99 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
100 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
101 initVertex = new AliESDVertex(pos,err);
102 vertexer.SetVtxStart(initVertex);
103 vertexer.SetConstraintOn();
106 Double_t maxDCAr = accCuts->GetMaxDCAr();
107 Double_t maxDCAz = accCuts->GetMaxDCAz();
108 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
110 //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);
111 vertexer.SetTPCMode(0.1,1.0,5.0,minTPCClust,1,3.,0.1,2.0,maxDCAr,maxDCAz,1,4);
113 // TPC track preselection
114 Int_t ntracks = aEsd->GetNumberOfTracks();
115 TObjArray array(ntracks);
116 UShort_t *id = new UShort_t[ntracks];
120 for (Int_t i=0;i <ntracks; i++) {
121 AliESDtrack *t = aEsd->GetTrack(i);
123 if (t->Charge() == 0) continue;
124 if (!t->GetTPCInnerParam()) continue;
125 if (t->GetTPCNcls()<vertexer.GetMinClusters()) continue;
126 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
128 array.AddLast(tpcTrack);
129 id[count] = (UShort_t)t->GetID();
133 AliESDVertex *vTPC = vertexer.VertexForSelectedTracks(&array,id, kTRUE, kTRUE, bUseMeanVertex);
135 delete [] id; id=NULL;
139 // set recreated TPC vertex
140 aEsd->SetPrimaryVertexTPC(vTPC);
142 for (Int_t i=0; i<aEsd->GetNumberOfTracks(); i++) {
143 AliESDtrack *t = aEsd->GetTrack(i);
146 Double_t x[3]; t->GetXYZ(x);
147 Double_t b[3]; AliTracker::GetBxByBz(x,b);
148 t->RelateToVertexTPCBxByBz(vTPC, b, kVeryBig);
153 delete [] id; id=NULL;
156 vertex = aEsd->GetPrimaryVertexTPC();
158 Printf("AlidNdPtHelper::GetVertex: Returning vertex from tracks");
161 Printf("AlidNdPtHelper::GetVertex: ERROR: Invalid second argument %d", analysisMode);
165 Printf("AlidNdPtHelper::GetVertex: No vertex found in ESD");
171 Printf("AlidNdPtHelper::GetVertex: Returning valid vertex: %s", vertex->GetTitle());
175 if(initVertex) delete initVertex; initVertex=NULL;
179 //____________________________________________________________________
180 Bool_t AlidNdPtHelper::TestRecVertex(const AliESDVertex* vertex, const AliESDVertex* vertexSPD, AnalysisMode analysisMode, Bool_t debug)
182 // Checks if a vertex meets the needed quality criteria
183 if(!vertex) return kFALSE;
184 if(!vertex->GetStatus()) return kFALSE;
186 Float_t requiredZResolution = -1;
187 if (analysisMode == kSPD || analysisMode == kTPCITS ||
188 analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate || analysisMode == kTPCITSHybrid ||
189 analysisMode == kTPCTrackSPDvtx || analysisMode == kTPCTrackSPDvtxUpdate || analysisMode == kTPCITSHybridTrackSPDvtx || analysisMode == kTPCITSHybridTrackSPDvtxDCArPt
190 || analysisMode == kITSStandAloneTrackSPDvtx || analysisMode == kITSStandAloneTPCTrackSPDvtx)
192 requiredZResolution = 1000;
194 else if (analysisMode == kTPC)
195 requiredZResolution = 10.;
198 Double_t zRes = vertex->GetZRes();
200 if (zRes > requiredZResolution) {
202 Printf("AlidNdPtHelper::TestVertex: Resolution too poor %f (required: %f", zRes, requiredZResolution);
206 // always check for SPD vertex
207 if(!vertexSPD) return kFALSE;
208 if(!vertexSPD->GetStatus()) return kFALSE;
209 if (vertexSPD->IsFromVertexerZ())
211 if (vertexSPD->GetDispersion() > 0.02)
214 Printf("AliPWG0Helper::TestVertex: Delta Phi too large in Vertexer Z: %f (required: %f", vertex->GetDispersion(), 0.02);
223 //____________________________________________________________________
224 Bool_t AlidNdPtHelper::IsGoodImpPar(const AliESDtrack *const track)
227 // check whether particle has good DCAr(Pt) impact
228 // parameter. Only for TPC+ITS tracks (7*sigma cut)
229 // Origin: Andrea Dainese
232 Float_t d0z0[2],covd0z0[3];
233 track->GetImpactParameters(d0z0,covd0z0);
234 Float_t sigma= 0.0050+0.0060/TMath::Power(track->Pt(),0.9);
235 Float_t d0max = 7.*sigma;
236 if(TMath::Abs(d0z0[0]) < d0max) return kTRUE;
241 //____________________________________________________________________
242 Bool_t AlidNdPtHelper::IsPrimaryParticle(AliStack* const stack, Int_t idx, ParticleMode particleMode)
245 // check primary particles
246 // depending on the particle mode
248 if(!stack) return kFALSE;
250 TParticle* particle = stack->Particle(idx);
251 if (!particle) return kFALSE;
253 // only charged particles
254 Double_t charge = particle->GetPDG()->Charge()/3.;
255 if (TMath::Abs(charge) < 0.001) return kFALSE;
257 Int_t pdg = TMath::Abs(particle->GetPdgCode());
260 Bool_t prim = stack->IsPhysicalPrimary(idx);
262 if(particleMode==kMCPion) {
263 if(prim && pdg==kPiPlus) return kTRUE;
267 if (particleMode==kMCKaon) {
268 if(prim && pdg==kKPlus) return kTRUE;
272 if (particleMode==kMCProton) {
273 if(prim && pdg==kProton) return kTRUE;
277 if(particleMode==kMCRest) {
278 if(prim && pdg!=kPiPlus && pdg!=kKPlus && pdg!=kProton) return kTRUE;
285 //____________________________________________________________________
286 Bool_t AlidNdPtHelper::IsCosmicTrack(AliESDtrack *const track1, AliESDtrack *const track2)
289 // check cosmic tracks
291 if(!track1) return kFALSE;
292 if(!track2) return kFALSE;
295 // cosmic tracks in TPC
297 //if( TMath::Abs( track1->Theta() - track2->Theta() ) < 0.004 &&
298 // ((TMath::Abs(track1->Phi()-track2->Phi()) - TMath::Pi() )<0.004) &&
299 //if( track1->Pt() > 4.0 && (TMath::Abs(track1->Phi()-track2->Phi())-TMath::Pi())<0.1
300 // && (TMath::Abs(track1->Eta()+track2->Eta())-0.1) < 0.0 && (track1->Charge()+track2->Charge()) == 0)
302 //Float_t scaleF= 6.0;
303 if ( track1->Pt() > 4 && track2->Pt() > 4 &&
304 //(TMath::Abs(track1->GetSnp()-track2->GetSnp())-2.) < scaleF * TMath::Sqrt(track1->GetSigmaSnp2()+track2->GetSigmaSnp2()) &&
305 //TMath::Abs(track1->GetTgl()-track2->GetTgl()) < scaleF * TMath::Sqrt(track1->GetSigmaTgl2()+track2->GetSigmaTgl2()) &&
306 //TMath::Abs(track1->OneOverPt()-track2->OneOverPt()) < scaleF * TMath::Sqrt(track1->GetSigma1Pt2()+track2->GetSigma1Pt2()) &&
307 (track1->Charge()+track2->Charge()) == 0 &&
308 track1->Eta()*track2->Eta()<0.0 && TMath::Abs(track1->Eta()+track2->Eta())<0.03 &&
309 TMath::Abs(TMath::Abs(track1->Phi()-track2->Phi())-TMath::Pi())<0.1
312 printf("COSMIC candidate \n");
314 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());
315 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());
316 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());
317 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()));
324 //____________________________________________________________________
325 void AlidNdPtHelper::PrintConf(AnalysisMode analysisMode, AliTriggerAnalysis::Trigger trigger)
328 // Prints the given configuration
331 TString str(">>>> Running with ");
333 switch (analysisMode)
335 case kInvalid: str += "invalid setting"; break;
336 case kSPD : str += "SPD-only"; break;
337 case kTPC : str += "TPC-only"; break;
338 case kTPCITS : str += "Global tracking"; break;
339 case kTPCSPDvtx : str += "TPC tracking + SPD event vertex"; break;
340 case kTPCSPDvtxUpdate : str += "TPC tracks updated with SPD event vertex point"; break;
341 case kTPCTrackSPDvtx : str += "TPC tracking + Tracks event vertex or SPD event vertex"; break;
342 case kTPCTrackSPDvtxUpdate : str += "TPC tracks updated with Track or SPD event vertex point"; break;
343 case kTPCITSHybrid : str += "TPC tracking + ITS refit + >1 SPD cluster"; break;
344 case kTPCITSHybridTrackSPDvtx : str += "TPC tracking + ITS refit + >1 SPD cluster + Tracks event vertex or SPD event vertex"; break;
345 case kTPCITSHybridTrackSPDvtxDCArPt : str += "TPC tracking + ITS refit + >1 SPD cluster + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
346 case kITSStandAloneTrackSPDvtx : str += "ITS standalone + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
347 case kITSStandAloneTPCTrackSPDvtx : str += "kITSStandAloneTPCTrackSPDvtx + TPC stand alone track + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
348 case kMCRec : str += "TPC tracking + Replace rec. with MC values"; break;
350 str += " and trigger ";
352 str += AliTriggerAnalysis::GetTriggerName(trigger);
356 Printf("%s", str.Data());
359 //____________________________________________________________________
360 Int_t AlidNdPtHelper::ConvertPdgToPid(const TParticle *const particle) {
362 // Convert Abs(pdg) to pid
363 // (0 - e, 1 - muons, 2 - pions, 3 - kaons, 4 - protons, 5 -all rest)
367 if (TMath::Abs(particle->GetPdgCode()) == kElectron) { pid = 0; }
368 else if (TMath::Abs(particle->GetPdgCode()) == kMuonMinus) { pid = 1; }
369 else if (TMath::Abs(particle->GetPdgCode()) == kPiPlus) { pid = 2; }
370 else if (TMath::Abs(particle->GetPdgCode()) == kKPlus) { pid = 3; }
371 else if (TMath::Abs(particle->GetPdgCode()) == kProton) { pid = 4; }
377 //_____________________________________________________________________________
378 TH1F* AlidNdPtHelper::CreateResHisto(TH2F* const hRes2, TH1F **phMean, Int_t integ, Bool_t drawBinFits, Int_t minHistEntries)
381 // Create mean and resolution
384 TVirtualPad* currentPad = gPad;
385 TAxis* axis = hRes2->GetXaxis();
386 Int_t nBins = axis->GetNbins();
387 //Bool_t overflowBinFits = kFALSE;
389 if (axis->GetXbins()->GetSize()){
390 hRes = new TH1F("hRes", "", nBins, axis->GetXbins()->GetArray());
391 hMean = new TH1F("hMean", "", nBins, axis->GetXbins()->GetArray());
394 hRes = new TH1F("hRes", "", nBins, axis->GetXmin(), axis->GetXmax());
395 hMean = new TH1F("hMean", "", nBins, axis->GetXmin(), axis->GetXmax());
398 hRes->SetStats(false);
399 hRes->SetOption("E");
400 hRes->SetMinimum(0.);
402 hMean->SetStats(false);
403 hMean->SetOption("E");
405 // create the fit function
406 TF1 * fitFunc = new TF1("G","[0]*exp(-(x-[1])*(x-[1])/(2.*[2]*[2]))",-3,3);
408 fitFunc->SetLineWidth(2);
409 fitFunc->SetFillStyle(0);
410 // create canvas for fits
411 TCanvas* canBinFits = NULL;
412 //Int_t nPads = (overflowBinFits) ? nBins+2 : nBins;
414 Int_t nx = Int_t(sqrt(nPads-1.));// + 1;
415 Int_t ny = (nPads-1) / nx + 1;
417 canBinFits = (TCanvas*)gROOT->FindObject("canBinFits");
418 if (canBinFits) delete canBinFits;
419 canBinFits = new TCanvas("canBinFits", "fits of bins", 200, 100, 500, 700);
420 canBinFits->Divide(nx, ny);
423 // loop over x bins and fit projection
424 //Int_t dBin = ((overflowBinFits) ? 1 : 0);
426 for (Int_t bin = 1-dBin; bin <= nBins+dBin; bin++) {
427 if (drawBinFits) canBinFits->cd(bin + dBin);
428 Int_t bin0=TMath::Max(bin-integ,0);
429 Int_t bin1=TMath::Min(bin+integ,nBins);
430 TH1D* hBin = hRes2->ProjectionY("hBin", bin0, bin1);
432 if (hBin->GetEntries() > minHistEntries) {
433 fitFunc->SetParameters(hBin->GetMaximum(),hBin->GetMean(),hBin->GetRMS());
434 hBin->Fit(fitFunc,"s");
435 Double_t sigma = TMath::Abs(fitFunc->GetParameter(2));
438 hRes->SetBinContent(bin, TMath::Abs(fitFunc->GetParameter(2)));
439 hMean->SetBinContent(bin, fitFunc->GetParameter(1));
442 hRes->SetBinContent(bin, 0.);
443 hMean->SetBinContent(bin,0);
445 hRes->SetBinError(bin, fitFunc->GetParError(2));
446 hMean->SetBinError(bin, fitFunc->GetParError(1));
452 hRes->SetBinContent(bin, 0.);
453 hRes->SetBinError(bin, 0.);
454 hMean->SetBinContent(bin, 0.);
455 hMean->SetBinError(bin, 0.);
462 snprintf(name,256, "%s < %.4g", axis->GetTitle(), axis->GetBinUpEdge(bin));
463 } else if (bin == nBins+1) {
464 snprintf(name,256, "%.4g < %s", axis->GetBinLowEdge(bin), axis->GetTitle());
466 snprintf(name,256, "%.4g < %s < %.4g", axis->GetBinLowEdge(bin),
467 axis->GetTitle(), axis->GetBinUpEdge(bin));
469 canBinFits->cd(bin + dBin);
470 hBin->SetTitle(name);
471 hBin->SetStats(kTRUE);
473 canBinFits->Update();
474 canBinFits->Modified();
475 canBinFits->Update();
487 //_____________________________________________________________________________
488 TH1F* AlidNdPtHelper::MakeResol(TH2F * his, Int_t integ, Bool_t type, Bool_t drawBins, Int_t minHistEntries){
489 // Create resolution histograms
491 TH1F *hisr=0, *hism=0;
492 if (!gPad) new TCanvas;
493 hisr = CreateResHisto(his,&hism,integ,drawBins,minHistEntries);
494 if (type) return hism;
500 //_____________________________________________________________________________
501 TObjArray* AlidNdPtHelper::GetAllChargedTracks(AliESDEvent *esdEvent, AnalysisMode analysisMode)
504 // all charged TPC particles
506 TObjArray *allTracks = new TObjArray();
507 if(!allTracks) return allTracks;
509 AliESDtrack *track=0;
510 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
512 if(analysisMode == AlidNdPtHelper::kTPC) {
514 // track must be deleted by user
515 // esd track parameters are replaced by TPCinner
517 track = AliESDtrackCuts::GetTPCOnlyTrack(esdEvent,iTrack);
520 else if (analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate)
523 // track must be deleted by the user
524 // esd track parameters are replaced by TPCinner
526 track = AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(esdEvent,iTrack,kFALSE);
529 else if (analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
532 // track must be deleted by the user
533 // esd track parameters are replaced by TPCinner
535 track = AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
538 else if(analysisMode == AlidNdPtHelper::kTPCITSHybrid )
540 track = AlidNdPtHelper::GetTrackSPDvtx(esdEvent,iTrack,kFALSE);
542 else if(analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtxDCArPt || analysisMode == AlidNdPtHelper::kITSStandAloneTrackSPDvtx || analysisMode ==AlidNdPtHelper::kITSStandAloneTPCTrackSPDvtx)
544 track = AlidNdPtHelper::GetTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
548 track = esdEvent->GetTrack(iTrack);
553 if(track->Charge()==0) {
554 if(analysisMode == AlidNdPtHelper::kTPC ||
555 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
556 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
558 delete track; continue;
564 allTracks->Add(track);
567 if(analysisMode == AlidNdPtHelper::kTPC ||
568 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
569 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate) {
571 allTracks->SetOwner(kTRUE);
577 //_____________________________________________________________________________
578 AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
581 // Create ESD tracks from TPCinner parameters.
582 // Propagte to DCA to SPD vertex.
583 // Update using SPD vertex point (parameter)
585 // It is user responsibility to delete these tracks
588 if (!esdEvent) return NULL;
589 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
590 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
593 AliESDtrack* track = esdEvent->GetTrack(iTrack);
597 Bool_t isOK = kFALSE;
598 Double_t x[3]; track->GetXYZ(x);
599 Double_t b[3]; AliTracker::GetBxByBz(x,b);
601 // create new ESD track
602 AliESDtrack *tpcTrack = new AliESDtrack();
604 // relate TPC-only tracks (TPCinner) to SPD vertex
605 AliExternalTrackParam cParam;
607 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
608 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
610 // reject fake tracks
611 if(track->Pt() > 10000.) {
612 ::Error("Exclude no physical tracks","pt>10000. GeV");
618 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
621 // only true if we have a tpc track
622 if (!track->FillTPCOnlyTrack(*tpcTrack))
628 if(!isOK) return NULL;
633 //_____________________________________________________________________________
634 AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
637 // Create ESD tracks from TPCinner parameters.
638 // Propagte to DCA to Track or SPD vertex.
639 // Update using SPD vertex point (parameter)
641 // It is user responsibility to delete these tracks
643 if (!esdEvent) return NULL;
644 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
645 if(vertex->GetNContributors()<1) {
647 vertex = esdEvent->GetPrimaryVertexSPD();
649 if(!vertex) return NULL;
652 AliESDtrack* track = esdEvent->GetTrack(iTrack);
656 Bool_t isOK = kFALSE;
657 Double_t x[3]; track->GetXYZ(x);
658 Double_t b[3]; AliTracker::GetBxByBz(x,b);
660 // create new ESD track
661 AliESDtrack *tpcTrack = new AliESDtrack();
663 // relate TPC-only tracks (TPCinner) to SPD vertex
664 AliExternalTrackParam cParam;
666 isOK = track->RelateToVertexTPCBxByBz(vertex,b,kVeryBig,&cParam);
667 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
669 // reject fake tracks
670 if(track->Pt() > 10000.) {
671 ::Error("Exclude no physical tracks","pt>10000. GeV");
677 isOK = track->RelateToVertexTPCBxByBz(vertex, b, kVeryBig);
680 // only true if we have a tpc track
681 if (!track->FillTPCOnlyTrack(*tpcTrack))
687 if(!isOK) return NULL;
692 //_____________________________________________________________________________
693 AliESDtrack *AlidNdPtHelper::GetTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
696 // Propagte track to DCA to SPD vertex.
697 // Update using SPD vertex point (parameter)
699 if (!esdEvent) return NULL;
700 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
701 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
704 AliESDtrack* track = esdEvent->GetTrack(iTrack);
708 Bool_t isOK = kFALSE;
709 Double_t x[3]; track->GetXYZ(x);
710 Double_t b[3]; AliTracker::GetBxByBz(x,b);
712 // relate tracks to SPD vertex
713 AliExternalTrackParam cParam;
715 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
716 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
718 // reject fake tracks
719 if(track->Pt() > 10000.) {
720 ::Error("Exclude no physical tracks","pt>10000. GeV");
725 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
728 if(!isOK) return NULL;
733 //_____________________________________________________________________________
734 AliESDtrack *AlidNdPtHelper::GetTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
737 // Propagte track to DCA to Track or SPD vertex.
738 // Update using SPD vertex point (parameter)
740 if (!esdEvent) return NULL;
742 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
743 if(vertex->GetNContributors()<1) {
745 vertex = esdEvent->GetPrimaryVertexSPD();
747 if(!vertex) return NULL;
750 AliESDtrack* track = esdEvent->GetTrack(iTrack);
754 Bool_t isOK = kFALSE;
755 Double_t x[3]; track->GetXYZ(x);
756 Double_t b[3]; AliTracker::GetBxByBz(x,b);
758 // relate tracks to SPD vertex
759 AliExternalTrackParam cParam;
761 isOK = track->RelateToVertexBxByBz(vertex,b,kVeryBig,&cParam);
762 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
764 // reject fake tracks
765 if(track->Pt() > 10000.) {
766 ::Error("Exclude no physical tracks","pt>10000. GeV");
771 isOK = track->RelateToVertexBxByBz(vertex, b, kVeryBig);
774 if(!isOK) return NULL;
779 //_____________________________________________________________________________
780 Bool_t AlidNdPtHelper::SelectEvent(const AliESDEvent* const esdEvent, AliESDtrackCuts* const esdTrackCuts) {
781 // select events with at least
782 // one reconstructed primary track in acceptance
783 // pT>0.5 GeV/c, |eta|<0.8 for cross section studies
785 if(!esdEvent) return kFALSE;
786 if(!esdTrackCuts) return kFALSE;
788 AliESDtrack *track=0;
790 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
792 track = esdEvent->GetTrack(iTrack);
794 if(track->Charge()==0) continue;
795 if(!esdTrackCuts->AcceptTrack(track)) continue;
796 if(track->Pt() < 0.5) continue;
797 if(TMath::Abs(track->Eta()) > 0.8) continue;
802 if(count > 0) return kTRUE;
808 //_____________________________________________________________________________
809 Bool_t AlidNdPtHelper::SelectMCEvent(AliMCEvent* const mcEvent) {
811 // select events with at least
812 // one prompt (MC primary) track in acceptance
813 // pT>0.5 GeV/c, |eta|<0.8 for cross section studies
816 if(!mcEvent) return kFALSE;
817 AliStack* stack = mcEvent->Stack();
818 if(!stack) return kFALSE;
821 for (Int_t iMc = 0; iMc < stack->GetNtrack(); ++iMc)
823 TParticle* particle = stack->Particle(iMc);
824 if (!particle) continue;
826 // only charged particles
827 if(!particle->GetPDG()) continue;
828 Double_t charge = particle->GetPDG()->Charge()/3.;
829 if(charge == 0) continue;
832 Bool_t prim = stack->IsPhysicalPrimary(iMc);
835 if(particle->Pt() < 0.5) continue;
836 if(TMath::Abs(particle->Eta()) > 0.8) continue;
841 if(count > 0) return kTRUE;
847 //_____________________________________________________________________________
848 Int_t AlidNdPtHelper::GetTPCMBTrackMult(const AliESDEvent *const esdEvent,const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts,const AliESDtrackCuts *const trackCuts)
851 // get MB event track multiplicity
855 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","esd event is NULL");
859 if(!evtCuts || !accCuts || !trackCuts)
861 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","cuts not available");
866 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
867 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
868 AliESDVertex vtx0(pos,err);
871 Float_t maxDCAr = accCuts->GetMaxDCAr();
872 Float_t maxDCAz = accCuts->GetMaxDCAz();
873 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
875 Int_t ntracks = esdEvent->GetNumberOfTracks();
876 Double_t dca[2],cov[3];
878 for (Int_t i=0;i <ntracks; i++){
879 AliESDtrack *t = esdEvent->GetTrack(i);
881 if (t->Charge() == 0) continue;
882 if (!t->GetTPCInnerParam()) continue;
883 if (t->GetTPCNcls()<minTPCClust) continue;
885 Double_t x[3]; t->GetXYZ(x);
886 Double_t b[3]; AliTracker::GetBxByBz(x,b);
887 const Double_t kMaxStep = 1; //max step over the material
889 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
890 if(!tpcTrack) return 0;
892 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
894 if(tpcTrack) delete tpcTrack;
898 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
899 if(tpcTrack) delete tpcTrack;
905 if(tpcTrack) delete tpcTrack;
911 //_____________________________________________________________________________
912 Int_t AlidNdPtHelper::GetTPCMBPrimTrackMult(const AliESDEvent *const esdEvent, AliStack *const stack, const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts, const AliESDtrackCuts *const trackCuts)
915 // get MB primary event track multiplicity
919 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
925 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
929 if(!evtCuts || !accCuts || !trackCuts)
931 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","cuts not available");
936 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
937 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
938 AliESDVertex vtx0(pos,err);
941 Float_t maxDCAr = accCuts->GetMaxDCAr();
942 Float_t maxDCAz = accCuts->GetMaxDCAz();
943 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
946 Int_t ntracks = esdEvent->GetNumberOfTracks();
947 Double_t dca[2],cov[3];
949 for (Int_t i=0;i <ntracks; i++){
950 AliESDtrack *t = esdEvent->GetTrack(i);
952 if (t->Charge() == 0) continue;
953 if (!t->GetTPCInnerParam()) continue;
954 if (t->GetTPCNcls()<minTPCClust) continue;
956 Double_t x[3]; t->GetXYZ(x);
957 Double_t b[3]; AliTracker::GetBxByBz(x,b);
958 const Double_t kMaxStep = 1; //max step over the material
960 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
961 if(!tpcTrack) return 0;
963 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
965 if(tpcTrack) delete tpcTrack;
969 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
970 if(tpcTrack) delete tpcTrack;
974 Int_t label = TMath::Abs(t->GetLabel());
975 TParticle *part = stack->Particle(label);
977 if(tpcTrack) delete tpcTrack;
980 if(!stack->IsPhysicalPrimary(label))
982 if(tpcTrack) delete tpcTrack;
988 if(tpcTrack) delete tpcTrack;
995 //_____________________________________________________________________________
996 Double_t AlidNdPtHelper::GetStrangenessCorrFactor(const Double_t pt)
998 // data driven correction factor for secondaries
999 // underestimated secondaries with strangeness in Pythia (A. Dainese)
1003 // pt=0.4; fact=1.07
1004 // pt=0.6; fact=1.25
1005 // pt>=1.2; fact=1.5
1008 if (pt <= 0.17) return 1.0;
1009 if (pt <= 0.4) return GetLinearInterpolationValue(0.17,1.0,0.4,1.07, pt);
1010 if (pt <= 0.6) return GetLinearInterpolationValue(0.4,1.07,0.6,1.25, pt);
1011 if (pt <= 1.2) return GetLinearInterpolationValue(0.6,1.25,1.2,1.5, pt);
1016 //_____________________________________________________________________________
1017 Double_t AlidNdPtHelper::GetStrangenessCorrFactorPbPb(const Double_t pt)
1019 // data driven correction factor for secondaries (PbPb)
1021 if (pt <= 0.25) return 1.0;
1022 if (pt <= 0.5) return GetLinearInterpolationValue(0.25,1.0,0.5,1.4, pt);
1023 if (pt <= 1.0) return GetLinearInterpolationValue(0.5,1.4,1.0,1.47, pt);
1024 if (pt <= 2.0) return GetLinearInterpolationValue(1.0,1.47,2.0,1.56, pt);
1025 if (pt <= 5.0) return GetLinearInterpolationValue(2.0,1.56,5.0,1.67, pt);
1030 //___________________________________________________________________________
1031 Double_t AlidNdPtHelper::GetLinearInterpolationValue(const Double_t x1,const Double_t y1,const Double_t x2,const Double_t y2, const Double_t pt)
1034 // linear interpolation
1036 return ((y2-y1)/(x2-x1))*pt+(y2-(((y2-y1)/(x2-x1))*x2));
1039 //_____________________________________________________________________________
1040 Int_t AlidNdPtHelper::GetMCTrueTrackMult(AliMCEvent *const mcEvent, AlidNdPtEventCuts *const evtCuts, AlidNdPtAcceptanceCuts *const accCuts)
1043 // calculate mc event true track multiplicity
1045 if(!mcEvent) return 0;
1047 AliStack* stack = 0;
1050 // MC particle stack
1051 stack = mcEvent->Stack();
1052 if (!stack) return 0;
1055 //printf("minZv %f, maxZv %f \n", evtCuts->GetMinZv(), evtCuts->GetMaxZv());
1058 Bool_t isEventOK = evtCuts->AcceptMCEvent(mcEvent);
1059 if(!isEventOK) return 0;
1061 Int_t nPart = stack->GetNtrack();
1062 for (Int_t iMc = 0; iMc < nPart; ++iMc)
1064 TParticle* particle = stack->Particle(iMc);
1068 // only charged particles
1069 if(!particle->GetPDG()) continue;
1070 Double_t charge = particle->GetPDG()->Charge()/3.;
1071 if (TMath::Abs(charge) < 0.001)
1075 Bool_t prim = stack->IsPhysicalPrimary(iMc);
1078 // checked accepted without pt cut
1079 //if(accCuts->AcceptTrack(particle))
1080 if( particle->Eta() > accCuts->GetMinEta() && particle->Eta() < accCuts->GetMaxEta() )
1089 //_______________________________________________________________________
1090 void AlidNdPtHelper::PrintMCInfo(AliStack *const pStack,Int_t label)
1092 // print information about particles in the stack
1095 label = TMath::Abs(label);
1096 TParticle *part = pStack->Particle(label);
1097 Printf("########################");
1098 Printf("%s:%d %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,label,part->GetUniqueID(),part->GetPdgCode(),part->P());
1100 TParticle* mother = part;
1101 Int_t imo = part->GetFirstMother();
1102 Int_t nprim = pStack->GetNprimary();
1104 while((imo >= nprim)) {
1105 mother = pStack->Particle(imo);
1106 Printf("Mother %s:%d Label %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,imo,mother->GetUniqueID(),mother->GetPdgCode(),mother->P());
1108 imo = mother->GetFirstMother();
1111 Printf("########################");
1115 //_____________________________________________________________________________
1116 TH1* AlidNdPtHelper::GetContCorrHisto(TH1 *const hist)
1119 // get contamination histogram
1123 Int_t nbins = hist->GetNbinsX();
1124 TH1 *hCont = (TH1D *)hist->Clone();
1126 for(Int_t i=0; i<=nbins+1; i++) {
1127 Double_t binContent = hist->GetBinContent(i);
1128 Double_t binError = hist->GetBinError(i);
1130 hCont->SetBinContent(i,1.-binContent);
1131 hCont->SetBinError(i,binError);
1138 //_____________________________________________________________________________
1139 TH1* AlidNdPtHelper::ScaleByBinWidth(TH1 *const hist)
1142 // scale by bin width
1146 TH1 *hScale = (TH1D *)hist->Clone();
1147 hScale->Scale(1.,"width");
1152 //_____________________________________________________________________________
1153 TH1* AlidNdPtHelper::CalcRelativeDifference(const TH1 *const hist1, const TH1 *const hist2)
1156 // calculate rel. difference
1159 if(!hist1) return 0;
1160 if(!hist2) return 0;
1162 TH1 *h1Clone = (TH1D *)hist1->Clone();
1166 h1Clone->Add(hist2,-1);
1167 h1Clone->Divide(hist2);
1172 //_____________________________________________________________________________
1173 TH1* AlidNdPtHelper::CalcRelativeDifferenceFun(const TH1 *const hist1, TF1 *const fun)
1176 // calculate rel. difference
1177 // between histogram and function
1179 if(!hist1) return 0;
1182 TH1 *h1Clone = (TH1D *)hist1->Clone();
1186 h1Clone->Add(fun,-1);
1187 h1Clone->Divide(hist1);
1192 //_____________________________________________________________________________
1193 TH1* AlidNdPtHelper::NormalizeToEvent(const TH2 *const hist1, const TH1 *const hist2)
1195 // normalise to event for a given multiplicity bin
1196 // return pt histogram
1198 if(!hist1) return 0;
1199 if(!hist2) return 0;
1202 Int_t nbinsX = hist1->GetNbinsX();
1203 //Int_t nbinsY = hist1->GetNbinsY();
1206 for(Int_t i=0; i<=nbinsX+1; i++) {
1207 snprintf(name,256,"mom_%d",i);
1208 TH1D *hist = (TH1D*)hist1->ProjectionY(name,i+1,i+1);
1210 snprintf(name,256,"mom_norm");
1212 histNorm = (TH1D *)hist->Clone(name);
1216 Double_t nbEvents = hist2->GetBinContent(i);
1217 if(!nbEvents) { nbEvents = 1.; };
1219 hist->Scale(1./nbEvents);
1220 histNorm->Add(hist);
1226 //_____________________________________________________________________________
1227 //THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, char *const name) {
1228 THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char *name) {
1229 // generate correction matrix
1230 if(!hist1 || !hist2) return 0;
1232 THnSparse *h =(THnSparse*)hist1->Clone(name);;
1233 h->Divide(hist1,hist2,1,1,"B");
1238 //_____________________________________________________________________________
1239 //TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1240 TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char *name) {
1241 // generate correction matrix
1242 if(!hist1 || !hist2) return 0;
1244 TH2D *h =(TH2D*)hist1->Clone(name);;
1245 h->Divide(hist1,hist2,1,1,"B");
1250 //_____________________________________________________________________________
1251 //TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1252 TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
1253 // generate correction matrix
1254 if(!hist1 || !hist2) return 0;
1256 TH1D *h =(TH1D*)hist1->Clone(name);;
1257 h->Divide(hist1,hist2,1,1,"B");
1262 //_____________________________________________________________________________
1263 //THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, THnSparse *const hist2, char *const name) {
1264 THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char* name) {
1265 // generate contamination correction matrix
1266 if(!hist1 || !hist2) return 0;
1268 THnSparse *hist = GenerateCorrMatrix(hist1, hist2, name);
1271 // only for non ZERO bins!!!!
1273 Int_t* coord = new Int_t[hist->GetNdimensions()];
1274 memset(coord, 0, sizeof(Int_t) * hist->GetNdimensions());
1276 for (Long64_t i = 0; i < hist->GetNbins(); ++i) {
1277 Double_t v = hist->GetBinContent(i, coord);
1278 hist->SetBinContent(coord, 1.0-v);
1279 //printf("v %f, hist->GetBinContent(i, coord) %f \n",v,hist->GetBinContent(i, coord));
1280 Double_t err = hist->GetBinError(coord);
1281 hist->SetBinError(coord, err);
1289 //_____________________________________________________________________________
1290 //TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1291 TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char* name) {
1292 // generate contamination correction matrix
1293 if(!hist1 || !hist2) return 0;
1295 TH2 *hist = GenerateCorrMatrix(hist1, hist2, name);
1298 Int_t nBinsX = hist->GetNbinsX();
1299 Int_t nBinsY = hist->GetNbinsY();
1301 for (Int_t i = 0; i < nBinsX+1; i++) {
1302 for (Int_t j = 0; j < nBinsY+1; j++) {
1303 Double_t cont = hist->GetBinContent(i,j);
1304 hist->SetBinContent(i,j,1.-cont);
1305 Double_t err = hist->GetBinError(i,j);
1306 hist->SetBinError(i,j,err);
1313 //_____________________________________________________________________________
1314 //TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1315 TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
1316 // generate contamination correction matrix
1317 if(!hist1 || !hist2) return 0;
1319 TH1 *hist = GenerateCorrMatrix(hist1, hist2, name);
1322 Int_t nBinsX = hist->GetNbinsX();
1324 for (Int_t i = 0; i < nBinsX+1; i++) {
1325 Double_t cont = hist->GetBinContent(i);
1326 hist->SetBinContent(i,1.-cont);
1327 Double_t err = hist->GetBinError(i);
1328 hist->SetBinError(i,err);
1334 //_____________________________________________________________________________
1335 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){
1341 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1345 if(!evtCuts || !accCuts || !trackCuts)
1347 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1351 Double_t vtxpos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
1352 Double_t vtxsigma[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
1353 AliESDVertex vtx0(vtxpos,vtxsigma);
1355 Double_t maxDCAr = accCuts->GetMaxDCAr();
1356 Double_t maxDCAz = accCuts->GetMaxDCAz();
1357 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
1360 Int_t ntracks = esdEvent->GetNumberOfTracks();
1361 TVectorD ztrack(ntracks);
1362 Double_t dca[2],cov[3];
1364 for (Int_t i=0;i <ntracks; i++){
1365 AliESDtrack *t = esdEvent->GetTrack(i);
1367 if (!t->GetTPCInnerParam()) continue;
1368 if (t->GetTPCNcls()<minTPCClust) continue;
1371 Double_t x[3]; t->GetXYZ(x);
1372 Double_t b[3]; AliTracker::GetBxByBz(x,b);
1373 const Double_t kMaxStep = 1; //max step over the material
1375 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
1376 if(!tpcTrack) return 0;
1377 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov)) continue;
1380 if (TMath::Abs(dca[0])>maxDCAr) continue;
1381 //if (TMath::Sqrt(cov[0])>sigmaXYcut) continue;
1382 if (TMath::Abs(tpcTrack->GetZ())>maxDCAz) continue;
1384 ztrack[counter]=tpcTrack->GetZ();
1387 if(tpcTrack) delete tpcTrack;
1391 // Find LTM z position
1393 Double_t mean=0, sigma=0;
1394 if (counter<ntracksMin) return 0;
1396 Int_t nused = TMath::Nint(counter*fraction);
1397 if (nused==counter) nused=counter-1;
1399 AliMathBase::EvaluateUni(counter, ztrack.GetMatrixArray(), mean,sigma, TMath::Nint(counter*fraction));
1400 sigma/=TMath::Sqrt(nused);
1402 mean = TMath::Mean(counter, ztrack.GetMatrixArray());
1403 sigma = TMath::RMS(counter, ztrack.GetMatrixArray());
1404 sigma/=TMath::Sqrt(counter-1);
1408 const AliESDVertex* vertex = new AliESDVertex(vtxpos, vtxsigma);
1412 //_____________________________________________________________________________
1413 Int_t AlidNdPtHelper::GetSPDMBTrackMult(const AliESDEvent* const esdEvent, Float_t deltaThetaCut, Float_t deltaPhiCut)
1416 // SPD track multiplicity
1420 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1424 // get multiplicity from SPD tracklets
1425 Int_t inputCount = 0;
1426 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1428 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1430 Float_t phi = mult->GetPhi(i);
1432 phi += TMath::Pi() * 2;
1433 Float_t deltaPhi = mult->GetDeltaPhi(i);
1434 Float_t deltaTheta = mult->GetDeltaTheta(i);
1436 if (TMath::Abs(deltaPhi) > 1)
1437 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1439 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1442 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1451 //_____________________________________________________________________________
1452 Int_t AlidNdPtHelper::GetSPDMBPrimTrackMult(const AliESDEvent* const esdEvent, AliStack* const stack, Float_t deltaThetaCut, Float_t deltaPhiCut)
1455 // SPD track multiplicity
1459 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1463 // get multiplicity from SPD tracklets
1464 Int_t inputCount = 0;
1465 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1467 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1469 Float_t phi = mult->GetPhi(i);
1471 phi += TMath::Pi() * 2;
1472 Float_t deltaPhi = mult->GetDeltaPhi(i);
1473 Float_t deltaTheta = mult->GetDeltaTheta(i);
1475 if (TMath::Abs(deltaPhi) > 1)
1476 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1478 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1481 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1485 if (mult->GetLabel(i, 0) < 0 || mult->GetLabel(i, 0) != mult->GetLabel(i, 1) ||
1486 !stack->IsPhysicalPrimary(mult->GetLabel(i, 0)))
1495 //_____________________________________________________________________________
1497 THnSparse* AlidNdPtHelper::RebinTHnSparse(const THnSparse* hist1, THnSparse* hist2, const Char_t* newname, Option_t* option)
1499 THnSparse* htemp = 0;
1500 const THnSparse* hist = 0;
1501 TString opt = option;
1503 Bool_t calcErrors = kFALSE;
1504 Bool_t useRange = kFALSE;
1505 Bool_t overwrite = kFALSE;
1506 if (opt.Contains("e")) { calcErrors = kTRUE; } // calcluate correct errors (not implemented)
1507 if (opt.Contains("r")) { useRange = kTRUE; } // use the axis range given in hist1
1508 if (opt.Contains("o")) { overwrite = kTRUE; } // overwrite hist2 instead of creating a new one
1509 Int_t ndim = hist1->GetNdimensions();
1510 if (ndim != hist2->GetNdimensions()) {
1511 printf("AlidNdPtHelper::RebinTHnSparse: ERROR: Histograms have different dimensions \n");
1514 Int_t* dims = new Int_t[ndim];
1515 for (Int_t i = 0; i < ndim; i++) { dims[i] = i; }
1517 htemp = hist1->Projection(ndim,dims,"e");
1519 } else { hist = hist1; }
1520 //THnSparse* hnew = hist2->Projection(ndim,dims,"o");
1521 //hnew->SetName(newname);
1522 THnSparse* hnew = 0;
1526 hnew = (THnSparse*) hist2->Clone(newname);
1528 for (Int_t i = 0; i < ndim; i++) { hnew->GetAxis(i)->SetRange(); }
1529 hnew->SetTitle(hist1->GetTitle());
1534 Int_t* c = new Int_t[ndim];
1535 Double_t* x = new Double_t[ndim];
1536 Long64_t n = hist->GetNbins();
1537 for (Long64_t j = 0; j < n; j++) {
1538 content = hist->GetBinContent(j,c);
1539 error = hist->GetBinError(j);
1540 for (Int_t i = 0; i < ndim; i++) {
1541 x[i] = hist->GetAxis(i)->GetBinCenter(c[i]);
1543 /* function IsInRange is protected, shit!
1545 if (! hist1->IsInRange(c)) continue;
1549 // implementation to be done
1551 hnew->Fill(x,content);
1556 delete[] dims; dims=0;
1557 if (htemp) { delete htemp; htemp = 0;}