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];
119 for (Int_t i=0;i <ntracks; i++) {
120 AliESDtrack *t = aEsd->GetTrack(i);
122 if (t->Charge() == 0) continue;
123 if (!t->GetTPCInnerParam()) continue;
124 if (t->GetTPCNcls()<vertexer.GetMinClusters()) continue;
125 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
127 array.AddLast(tpcTrack);
128 id[count] = (UShort_t)t->GetID();
132 AliESDVertex *vTPC = vertexer.VertexForSelectedTracks(&array,id, kTRUE, kTRUE, bUseMeanVertex);
134 // set recreated TPC vertex
135 aEsd->SetPrimaryVertexTPC(vTPC);
137 for (Int_t i=0; i<aEsd->GetNumberOfTracks(); i++) {
138 AliESDtrack *t = aEsd->GetTrack(i);
141 Double_t x[3]; t->GetXYZ(x);
142 Double_t b[3]; AliTracker::GetBxByBz(x,b);
143 t->RelateToVertexTPCBxByBz(vTPC, b, kVeryBig);
148 delete [] id; id=NULL;
151 vertex = aEsd->GetPrimaryVertexTPC();
153 Printf("AlidNdPtHelper::GetVertex: Returning vertex from tracks");
156 Printf("AlidNdPtHelper::GetVertex: ERROR: Invalid second argument %d", analysisMode);
160 Printf("AlidNdPtHelper::GetVertex: No vertex found in ESD");
166 Printf("AlidNdPtHelper::GetVertex: Returning valid vertex: %s", vertex->GetTitle());
170 if(initVertex) delete initVertex; initVertex=NULL;
174 //____________________________________________________________________
175 Bool_t AlidNdPtHelper::TestRecVertex(const AliESDVertex* vertex, const AliESDVertex* vertexSPD, AnalysisMode analysisMode, Bool_t debug)
177 // Checks if a vertex meets the needed quality criteria
178 if(!vertex) return kFALSE;
179 if(!vertex->GetStatus()) return kFALSE;
181 Float_t requiredZResolution = -1;
182 if (analysisMode == kSPD || analysisMode == kTPCITS ||
183 analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate || analysisMode == kTPCITSHybrid ||
184 analysisMode == kTPCTrackSPDvtx || analysisMode == kTPCTrackSPDvtxUpdate || analysisMode == kTPCITSHybridTrackSPDvtx || analysisMode == kTPCITSHybridTrackSPDvtxDCArPt
185 || analysisMode == kITSStandAloneTrackSPDvtx || analysisMode == kITSStandAloneTPCTrackSPDvtx)
187 requiredZResolution = 1000;
189 else if (analysisMode == kTPC)
190 requiredZResolution = 10.;
193 Double_t zRes = vertex->GetZRes();
195 if (zRes > requiredZResolution) {
197 Printf("AlidNdPtHelper::TestVertex: Resolution too poor %f (required: %f", zRes, requiredZResolution);
201 // always check for SPD vertex
202 if(!vertexSPD) return kFALSE;
203 if(!vertexSPD->GetStatus()) return kFALSE;
204 if (vertexSPD->IsFromVertexerZ())
206 if (vertexSPD->GetDispersion() > 0.02)
209 Printf("AliPWG0Helper::TestVertex: Delta Phi too large in Vertexer Z: %f (required: %f", vertex->GetDispersion(), 0.02);
218 //____________________________________________________________________
219 Bool_t AlidNdPtHelper::IsGoodImpPar(const AliESDtrack *const track)
222 // check whether particle has good DCAr(Pt) impact
223 // parameter. Only for TPC+ITS tracks (7*sigma cut)
224 // Origin: Andrea Dainese
227 Float_t d0z0[2],covd0z0[3];
228 track->GetImpactParameters(d0z0,covd0z0);
229 Float_t sigma= 0.0050+0.0060/TMath::Power(track->Pt(),0.9);
230 Float_t d0max = 7.*sigma;
231 if(TMath::Abs(d0z0[0]) < d0max) return kTRUE;
236 //____________________________________________________________________
237 Bool_t AlidNdPtHelper::IsPrimaryParticle(AliStack* const stack, Int_t idx, ParticleMode particleMode)
240 // check primary particles
241 // depending on the particle mode
243 if(!stack) return kFALSE;
245 TParticle* particle = stack->Particle(idx);
246 if (!particle) return kFALSE;
248 // only charged particles
249 Double_t charge = particle->GetPDG()->Charge()/3.;
250 if (TMath::Abs(charge) < 0.001) return kFALSE;
252 Int_t pdg = TMath::Abs(particle->GetPdgCode());
255 Bool_t prim = stack->IsPhysicalPrimary(idx);
257 if(particleMode==kMCPion) {
258 if(prim && pdg==kPiPlus) return kTRUE;
262 if (particleMode==kMCKaon) {
263 if(prim && pdg==kKPlus) return kTRUE;
267 if (particleMode==kMCProton) {
268 if(prim && pdg==kProton) return kTRUE;
272 if(particleMode==kMCRest) {
273 if(prim && pdg!=kPiPlus && pdg!=kKPlus && pdg!=kProton) return kTRUE;
280 //____________________________________________________________________
281 Bool_t AlidNdPtHelper::IsCosmicTrack(AliESDtrack *const track1, AliESDtrack *const track2)
284 // check cosmic tracks
286 if(!track1) return kFALSE;
287 if(!track2) return kFALSE;
290 // cosmic tracks in TPC
292 //if( TMath::Abs( track1->Theta() - track2->Theta() ) < 0.004 &&
293 // ((TMath::Abs(track1->Phi()-track2->Phi()) - TMath::Pi() )<0.004) &&
294 //if( track1->Pt() > 4.0 && (TMath::Abs(track1->Phi()-track2->Phi())-TMath::Pi())<0.1
295 // && (TMath::Abs(track1->Eta()+track2->Eta())-0.1) < 0.0 && (track1->Charge()+track2->Charge()) == 0)
297 //Float_t scaleF= 6.0;
298 if ( track1->Pt() > 4 && track2->Pt() > 4 &&
299 //(TMath::Abs(track1->GetSnp()-track2->GetSnp())-2.) < scaleF * TMath::Sqrt(track1->GetSigmaSnp2()+track2->GetSigmaSnp2()) &&
300 //TMath::Abs(track1->GetTgl()-track2->GetTgl()) < scaleF * TMath::Sqrt(track1->GetSigmaTgl2()+track2->GetSigmaTgl2()) &&
301 //TMath::Abs(track1->OneOverPt()-track2->OneOverPt()) < scaleF * TMath::Sqrt(track1->GetSigma1Pt2()+track2->GetSigma1Pt2()) &&
302 (track1->Charge()+track2->Charge()) == 0 &&
303 track1->Eta()*track2->Eta()<0.0 && TMath::Abs(track1->Eta()+track2->Eta())<0.03 &&
304 TMath::Abs(TMath::Abs(track1->Phi()-track2->Phi())-TMath::Pi())<0.1
307 printf("COSMIC candidate \n");
309 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());
310 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());
311 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());
312 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()));
319 //____________________________________________________________________
320 void AlidNdPtHelper::PrintConf(AnalysisMode analysisMode, AliTriggerAnalysis::Trigger trigger)
323 // Prints the given configuration
326 TString str(">>>> Running with ");
328 switch (analysisMode)
330 case kInvalid: str += "invalid setting"; break;
331 case kSPD : str += "SPD-only"; break;
332 case kTPC : str += "TPC-only"; break;
333 case kTPCITS : str += "Global tracking"; break;
334 case kTPCSPDvtx : str += "TPC tracking + SPD event vertex"; break;
335 case kTPCSPDvtxUpdate : str += "TPC tracks updated with SPD event vertex point"; break;
336 case kTPCTrackSPDvtx : str += "TPC tracking + Tracks event vertex or SPD event vertex"; break;
337 case kTPCTrackSPDvtxUpdate : str += "TPC tracks updated with Track or SPD event vertex point"; break;
338 case kTPCITSHybrid : str += "TPC tracking + ITS refit + >1 SPD cluster"; break;
339 case kTPCITSHybridTrackSPDvtx : str += "TPC tracking + ITS refit + >1 SPD cluster + Tracks event vertex or SPD event vertex"; break;
340 case kTPCITSHybridTrackSPDvtxDCArPt : str += "TPC tracking + ITS refit + >1 SPD cluster + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
341 case kITSStandAloneTrackSPDvtx : str += "ITS standalone + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
342 case kITSStandAloneTPCTrackSPDvtx : str += "kITSStandAloneTPCTrackSPDvtx + TPC stand alone track + Tracks event vertex or SPD event vertex + DCAr(pt)"; break;
343 case kMCRec : str += "TPC tracking + Replace rec. with MC values"; break;
345 str += " and trigger ";
347 str += AliTriggerAnalysis::GetTriggerName(trigger);
351 Printf("%s", str.Data());
354 //____________________________________________________________________
355 Int_t AlidNdPtHelper::ConvertPdgToPid(const TParticle *const particle) {
357 // Convert Abs(pdg) to pid
358 // (0 - e, 1 - muons, 2 - pions, 3 - kaons, 4 - protons, 5 -all rest)
362 if (TMath::Abs(particle->GetPdgCode()) == kElectron) { pid = 0; }
363 else if (TMath::Abs(particle->GetPdgCode()) == kMuonMinus) { pid = 1; }
364 else if (TMath::Abs(particle->GetPdgCode()) == kPiPlus) { pid = 2; }
365 else if (TMath::Abs(particle->GetPdgCode()) == kKPlus) { pid = 3; }
366 else if (TMath::Abs(particle->GetPdgCode()) == kProton) { pid = 4; }
372 //_____________________________________________________________________________
373 TH1F* AlidNdPtHelper::CreateResHisto(TH2F* const hRes2, TH1F **phMean, Int_t integ, Bool_t drawBinFits, Int_t minHistEntries)
376 // Create mean and resolution
379 TVirtualPad* currentPad = gPad;
380 TAxis* axis = hRes2->GetXaxis();
381 Int_t nBins = axis->GetNbins();
382 //Bool_t overflowBinFits = kFALSE;
384 if (axis->GetXbins()->GetSize()){
385 hRes = new TH1F("hRes", "", nBins, axis->GetXbins()->GetArray());
386 hMean = new TH1F("hMean", "", nBins, axis->GetXbins()->GetArray());
389 hRes = new TH1F("hRes", "", nBins, axis->GetXmin(), axis->GetXmax());
390 hMean = new TH1F("hMean", "", nBins, axis->GetXmin(), axis->GetXmax());
393 hRes->SetStats(false);
394 hRes->SetOption("E");
395 hRes->SetMinimum(0.);
397 hMean->SetStats(false);
398 hMean->SetOption("E");
400 // create the fit function
401 TF1 * fitFunc = new TF1("G","[0]*exp(-(x-[1])*(x-[1])/(2.*[2]*[2]))",-3,3);
403 fitFunc->SetLineWidth(2);
404 fitFunc->SetFillStyle(0);
405 // create canvas for fits
406 TCanvas* canBinFits = NULL;
407 //Int_t nPads = (overflowBinFits) ? nBins+2 : nBins;
409 Int_t nx = Int_t(sqrt(nPads-1.));// + 1;
410 Int_t ny = (nPads-1) / nx + 1;
412 canBinFits = (TCanvas*)gROOT->FindObject("canBinFits");
413 if (canBinFits) delete canBinFits;
414 canBinFits = new TCanvas("canBinFits", "fits of bins", 200, 100, 500, 700);
415 canBinFits->Divide(nx, ny);
418 // loop over x bins and fit projection
419 //Int_t dBin = ((overflowBinFits) ? 1 : 0);
421 for (Int_t bin = 1-dBin; bin <= nBins+dBin; bin++) {
422 if (drawBinFits) canBinFits->cd(bin + dBin);
423 Int_t bin0=TMath::Max(bin-integ,0);
424 Int_t bin1=TMath::Min(bin+integ,nBins);
425 TH1D* hBin = hRes2->ProjectionY("hBin", bin0, bin1);
427 if (hBin->GetEntries() > minHistEntries) {
428 fitFunc->SetParameters(hBin->GetMaximum(),hBin->GetMean(),hBin->GetRMS());
429 hBin->Fit(fitFunc,"s");
430 Double_t sigma = TMath::Abs(fitFunc->GetParameter(2));
433 hRes->SetBinContent(bin, TMath::Abs(fitFunc->GetParameter(2)));
434 hMean->SetBinContent(bin, fitFunc->GetParameter(1));
437 hRes->SetBinContent(bin, 0.);
438 hMean->SetBinContent(bin,0);
440 hRes->SetBinError(bin, fitFunc->GetParError(2));
441 hMean->SetBinError(bin, fitFunc->GetParError(1));
447 hRes->SetBinContent(bin, 0.);
448 hRes->SetBinError(bin, 0.);
449 hMean->SetBinContent(bin, 0.);
450 hMean->SetBinError(bin, 0.);
457 sprintf(name, "%s < %.4g", axis->GetTitle(), axis->GetBinUpEdge(bin));
458 } else if (bin == nBins+1) {
459 sprintf(name, "%.4g < %s", axis->GetBinLowEdge(bin), axis->GetTitle());
461 sprintf(name, "%.4g < %s < %.4g", axis->GetBinLowEdge(bin),
462 axis->GetTitle(), axis->GetBinUpEdge(bin));
464 canBinFits->cd(bin + dBin);
465 hBin->SetTitle(name);
466 hBin->SetStats(kTRUE);
468 canBinFits->Update();
469 canBinFits->Modified();
470 canBinFits->Update();
482 //_____________________________________________________________________________
483 TH1F* AlidNdPtHelper::MakeResol(TH2F * his, Int_t integ, Bool_t type, Bool_t drawBins, Int_t minHistEntries){
484 // Create resolution histograms
486 TH1F *hisr=0, *hism=0;
487 if (!gPad) new TCanvas;
488 hisr = CreateResHisto(his,&hism,integ,drawBins,minHistEntries);
489 if (type) return hism;
495 //_____________________________________________________________________________
496 TObjArray* AlidNdPtHelper::GetAllChargedTracks(AliESDEvent *esdEvent, AnalysisMode analysisMode)
499 // all charged TPC particles
501 TObjArray *allTracks = new TObjArray();
502 if(!allTracks) return allTracks;
504 AliESDtrack *track=0;
505 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
507 if(analysisMode == AlidNdPtHelper::kTPC) {
509 // track must be deleted by user
510 // esd track parameters are replaced by TPCinner
512 track = AliESDtrackCuts::GetTPCOnlyTrack(esdEvent,iTrack);
515 else if (analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate)
518 // track must be deleted by the user
519 // esd track parameters are replaced by TPCinner
521 track = AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(esdEvent,iTrack,kFALSE);
524 else if (analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
527 // track must be deleted by the user
528 // esd track parameters are replaced by TPCinner
530 track = AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
533 else if(analysisMode == AlidNdPtHelper::kTPCITSHybrid )
535 track = AlidNdPtHelper::GetTrackSPDvtx(esdEvent,iTrack,kFALSE);
537 else if(analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtxDCArPt || analysisMode == AlidNdPtHelper::kITSStandAloneTrackSPDvtx || analysisMode ==AlidNdPtHelper::kITSStandAloneTPCTrackSPDvtx)
539 track = AlidNdPtHelper::GetTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
543 track = esdEvent->GetTrack(iTrack);
548 if(track->Charge()==0) {
549 if(analysisMode == AlidNdPtHelper::kTPC ||
550 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
551 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
553 delete track; continue;
559 allTracks->Add(track);
562 if(analysisMode == AlidNdPtHelper::kTPC ||
563 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
564 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate) {
566 allTracks->SetOwner(kTRUE);
572 //_____________________________________________________________________________
573 AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
576 // Create ESD tracks from TPCinner parameters.
577 // Propagte to DCA to SPD vertex.
578 // Update using SPD vertex point (parameter)
580 // It is user responsibility to delete these tracks
583 if (!esdEvent) return NULL;
584 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
585 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
588 AliESDtrack* track = esdEvent->GetTrack(iTrack);
592 Bool_t isOK = kFALSE;
593 Double_t x[3]; track->GetXYZ(x);
594 Double_t b[3]; AliTracker::GetBxByBz(x,b);
596 // create new ESD track
597 AliESDtrack *tpcTrack = new AliESDtrack();
599 // relate TPC-only tracks (TPCinner) to SPD vertex
600 AliExternalTrackParam cParam;
602 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
603 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
605 // reject fake tracks
606 if(track->Pt() > 10000.) {
607 ::Error("Exclude no physical tracks","pt>10000. GeV");
613 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
616 // only true if we have a tpc track
617 if (!track->FillTPCOnlyTrack(*tpcTrack))
623 if(!isOK) return NULL;
628 //_____________________________________________________________________________
629 AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
632 // Create ESD tracks from TPCinner parameters.
633 // Propagte to DCA to Track or SPD vertex.
634 // Update using SPD vertex point (parameter)
636 // It is user responsibility to delete these tracks
638 if (!esdEvent) return NULL;
639 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
640 if(vertex->GetNContributors()<1) {
642 vertex = esdEvent->GetPrimaryVertexSPD();
644 if(!vertex) return NULL;
647 AliESDtrack* track = esdEvent->GetTrack(iTrack);
651 Bool_t isOK = kFALSE;
652 Double_t x[3]; track->GetXYZ(x);
653 Double_t b[3]; AliTracker::GetBxByBz(x,b);
655 // create new ESD track
656 AliESDtrack *tpcTrack = new AliESDtrack();
658 // relate TPC-only tracks (TPCinner) to SPD vertex
659 AliExternalTrackParam cParam;
661 isOK = track->RelateToVertexTPCBxByBz(vertex,b,kVeryBig,&cParam);
662 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
664 // reject fake tracks
665 if(track->Pt() > 10000.) {
666 ::Error("Exclude no physical tracks","pt>10000. GeV");
672 isOK = track->RelateToVertexTPCBxByBz(vertex, b, kVeryBig);
675 // only true if we have a tpc track
676 if (!track->FillTPCOnlyTrack(*tpcTrack))
682 if(!isOK) return NULL;
687 //_____________________________________________________________________________
688 AliESDtrack *AlidNdPtHelper::GetTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
691 // Propagte track to DCA to SPD vertex.
692 // Update using SPD vertex point (parameter)
694 if (!esdEvent) return NULL;
695 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
696 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
699 AliESDtrack* track = esdEvent->GetTrack(iTrack);
703 Bool_t isOK = kFALSE;
704 Double_t x[3]; track->GetXYZ(x);
705 Double_t b[3]; AliTracker::GetBxByBz(x,b);
707 // relate tracks to SPD vertex
708 AliExternalTrackParam cParam;
710 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
711 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
713 // reject fake tracks
714 if(track->Pt() > 10000.) {
715 ::Error("Exclude no physical tracks","pt>10000. GeV");
720 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
723 if(!isOK) return NULL;
728 //_____________________________________________________________________________
729 AliESDtrack *AlidNdPtHelper::GetTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
732 // Propagte track to DCA to Track or SPD vertex.
733 // Update using SPD vertex point (parameter)
735 if (!esdEvent) return NULL;
737 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
738 if(vertex->GetNContributors()<1) {
740 vertex = esdEvent->GetPrimaryVertexSPD();
742 if(!vertex) return NULL;
745 AliESDtrack* track = esdEvent->GetTrack(iTrack);
749 Bool_t isOK = kFALSE;
750 Double_t x[3]; track->GetXYZ(x);
751 Double_t b[3]; AliTracker::GetBxByBz(x,b);
753 // relate tracks to SPD vertex
754 AliExternalTrackParam cParam;
756 isOK = track->RelateToVertexBxByBz(vertex,b,kVeryBig,&cParam);
757 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
759 // reject fake tracks
760 if(track->Pt() > 10000.) {
761 ::Error("Exclude no physical tracks","pt>10000. GeV");
766 isOK = track->RelateToVertexBxByBz(vertex, b, kVeryBig);
769 if(!isOK) return NULL;
774 //_____________________________________________________________________________
775 Bool_t AlidNdPtHelper::SelectEvent(const AliESDEvent* const esdEvent, AliESDtrackCuts* const esdTrackCuts) {
776 // select events with at least
777 // one reconstructed primary track in acceptance
778 // pT>0.5 GeV/c, |eta|<0.8 for cross section studies
780 if(!esdEvent) return kFALSE;
781 if(!esdTrackCuts) return kFALSE;
783 AliESDtrack *track=0;
785 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
787 track = esdEvent->GetTrack(iTrack);
789 if(track->Charge()==0) continue;
790 if(!esdTrackCuts->AcceptTrack(track)) continue;
791 if(track->Pt() < 0.5) continue;
792 if(TMath::Abs(track->Eta()) > 0.8) continue;
797 if(count > 0) return kTRUE;
803 //_____________________________________________________________________________
804 Bool_t AlidNdPtHelper::SelectMCEvent(AliMCEvent* const mcEvent) {
806 // select events with at least
807 // one prompt (MC primary) track in acceptance
808 // pT>0.5 GeV/c, |eta|<0.8 for cross section studies
811 if(!mcEvent) return kFALSE;
812 AliStack* stack = mcEvent->Stack();
813 if(!stack) return kFALSE;
816 for (Int_t iMc = 0; iMc < stack->GetNtrack(); ++iMc)
818 TParticle* particle = stack->Particle(iMc);
819 if (!particle) continue;
821 // only charged particles
822 if(!particle->GetPDG()) continue;
823 Double_t charge = particle->GetPDG()->Charge()/3.;
824 if(charge == 0) continue;
827 Bool_t prim = stack->IsPhysicalPrimary(iMc);
830 if(particle->Pt() < 0.5) continue;
831 if(TMath::Abs(particle->Eta()) > 0.8) continue;
836 if(count > 0) return kTRUE;
842 //_____________________________________________________________________________
843 Int_t AlidNdPtHelper::GetTPCMBTrackMult(const AliESDEvent *const esdEvent,const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts,const AliESDtrackCuts *const trackCuts)
846 // get MB event track multiplicity
850 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","esd event is NULL");
854 if(!evtCuts || !accCuts || !trackCuts)
856 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","cuts not available");
861 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
862 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
863 AliESDVertex vtx0(pos,err);
866 Float_t maxDCAr = accCuts->GetMaxDCAr();
867 Float_t maxDCAz = accCuts->GetMaxDCAz();
868 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
870 Int_t ntracks = esdEvent->GetNumberOfTracks();
871 Double_t dca[2],cov[3];
873 for (Int_t i=0;i <ntracks; i++){
874 AliESDtrack *t = esdEvent->GetTrack(i);
876 if (t->Charge() == 0) continue;
877 if (!t->GetTPCInnerParam()) continue;
878 if (t->GetTPCNcls()<minTPCClust) continue;
880 Double_t x[3]; t->GetXYZ(x);
881 Double_t b[3]; AliTracker::GetBxByBz(x,b);
882 const Double_t kMaxStep = 1; //max step over the material
884 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
885 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
887 if(tpcTrack) delete tpcTrack;
891 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
892 if(tpcTrack) delete tpcTrack;
898 if(tpcTrack) delete tpcTrack;
904 //_____________________________________________________________________________
905 Int_t AlidNdPtHelper::GetTPCMBPrimTrackMult(const AliESDEvent *const esdEvent, AliStack *const stack, const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts, const AliESDtrackCuts *const trackCuts)
908 // get MB primary event track multiplicity
912 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
918 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
922 if(!evtCuts || !accCuts || !trackCuts)
924 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","cuts not available");
929 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
930 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
931 AliESDVertex vtx0(pos,err);
934 Float_t maxDCAr = accCuts->GetMaxDCAr();
935 Float_t maxDCAz = accCuts->GetMaxDCAz();
936 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
939 Int_t ntracks = esdEvent->GetNumberOfTracks();
940 Double_t dca[2],cov[3];
942 for (Int_t i=0;i <ntracks; i++){
943 AliESDtrack *t = esdEvent->GetTrack(i);
945 if (t->Charge() == 0) continue;
946 if (!t->GetTPCInnerParam()) continue;
947 if (t->GetTPCNcls()<minTPCClust) continue;
949 Double_t x[3]; t->GetXYZ(x);
950 Double_t b[3]; AliTracker::GetBxByBz(x,b);
951 const Double_t kMaxStep = 1; //max step over the material
953 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
954 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
956 if(tpcTrack) delete tpcTrack;
960 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
961 if(tpcTrack) delete tpcTrack;
965 Int_t label = TMath::Abs(t->GetLabel());
966 TParticle *part = stack->Particle(label);
968 if(tpcTrack) delete tpcTrack;
971 if(!stack->IsPhysicalPrimary(label))
973 if(tpcTrack) delete tpcTrack;
979 if(tpcTrack) delete tpcTrack;
986 //_____________________________________________________________________________
987 Double_t AlidNdPtHelper::GetStrangenessCorrFactor(const Double_t pt)
989 // data driven correction factor for secondaries
990 // underestimated secondaries with strangeness in Pythia (A. Dainese)
999 if (pt <= 0.17) return 1.0;
1000 if (pt <= 0.4) return GetLinearInterpolationValue(0.17,1.0,0.4,1.07, pt);
1001 if (pt <= 0.6) return GetLinearInterpolationValue(0.4,1.07,0.6,1.25, pt);
1002 if (pt <= 1.2) return GetLinearInterpolationValue(0.6,1.25,1.2,1.5, pt);
1007 //_____________________________________________________________________________
1008 Double_t AlidNdPtHelper::GetStrangenessCorrFactorPbPb(const Double_t pt)
1010 // data driven correction factor for secondaries (PbPb)
1012 if (pt <= 0.25) return 1.0;
1013 if (pt <= 0.5) return GetLinearInterpolationValue(0.25,1.0,0.5,1.4, pt);
1014 if (pt <= 1.0) return GetLinearInterpolationValue(0.5,1.4,1.0,1.47, pt);
1015 if (pt <= 2.0) return GetLinearInterpolationValue(1.0,1.47,2.0,1.56, pt);
1016 if (pt <= 5.0) return GetLinearInterpolationValue(2.0,1.56,5.0,1.67, pt);
1021 //___________________________________________________________________________
1022 Double_t AlidNdPtHelper::GetLinearInterpolationValue(const Double_t x1,const Double_t y1,const Double_t x2,const Double_t y2, const Double_t pt)
1025 // linear interpolation
1027 return ((y2-y1)/(x2-x1))*pt+(y2-(((y2-y1)/(x2-x1))*x2));
1030 //_____________________________________________________________________________
1031 Int_t AlidNdPtHelper::GetMCTrueTrackMult(AliMCEvent *const mcEvent, AlidNdPtEventCuts *const evtCuts, AlidNdPtAcceptanceCuts *const accCuts)
1034 // calculate mc event true track multiplicity
1036 if(!mcEvent) return 0;
1038 AliStack* stack = 0;
1041 // MC particle stack
1042 stack = mcEvent->Stack();
1043 if (!stack) return 0;
1046 //printf("minZv %f, maxZv %f \n", evtCuts->GetMinZv(), evtCuts->GetMaxZv());
1049 Bool_t isEventOK = evtCuts->AcceptMCEvent(mcEvent);
1050 if(!isEventOK) return 0;
1052 Int_t nPart = stack->GetNtrack();
1053 for (Int_t iMc = 0; iMc < nPart; ++iMc)
1055 TParticle* particle = stack->Particle(iMc);
1059 // only charged particles
1060 if(!particle->GetPDG()) continue;
1061 Double_t charge = particle->GetPDG()->Charge()/3.;
1062 if (TMath::Abs(charge) < 0.001)
1066 Bool_t prim = stack->IsPhysicalPrimary(iMc);
1069 // checked accepted without pt cut
1070 //if(accCuts->AcceptTrack(particle))
1071 if( particle->Eta() > accCuts->GetMinEta() && particle->Eta() < accCuts->GetMaxEta() )
1080 //_______________________________________________________________________
1081 void AlidNdPtHelper::PrintMCInfo(AliStack *const pStack,Int_t label)
1083 // print information about particles in the stack
1086 label = TMath::Abs(label);
1087 TParticle *part = pStack->Particle(label);
1088 Printf("########################");
1089 Printf("%s:%d %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,label,part->GetUniqueID(),part->GetPdgCode(),part->P());
1091 TParticle* mother = part;
1092 Int_t imo = part->GetFirstMother();
1093 Int_t nprim = pStack->GetNprimary();
1095 while((imo >= nprim)) {
1096 mother = pStack->Particle(imo);
1097 Printf("Mother %s:%d Label %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,imo,mother->GetUniqueID(),mother->GetPdgCode(),mother->P());
1099 imo = mother->GetFirstMother();
1102 Printf("########################");
1106 //_____________________________________________________________________________
1107 TH1* AlidNdPtHelper::GetContCorrHisto(TH1 *const hist)
1110 // get contamination histogram
1114 Int_t nbins = hist->GetNbinsX();
1115 TH1 *hCont = (TH1D *)hist->Clone();
1117 for(Int_t i=0; i<=nbins+1; i++) {
1118 Double_t binContent = hist->GetBinContent(i);
1119 Double_t binError = hist->GetBinError(i);
1121 hCont->SetBinContent(i,1.-binContent);
1122 hCont->SetBinError(i,binError);
1129 //_____________________________________________________________________________
1130 TH1* AlidNdPtHelper::ScaleByBinWidth(TH1 *const hist)
1133 // scale by bin width
1137 TH1 *hScale = (TH1D *)hist->Clone();
1138 hScale->Scale(1.,"width");
1143 //_____________________________________________________________________________
1144 TH1* AlidNdPtHelper::CalcRelativeDifference(const TH1 *const hist1, const TH1 *const hist2)
1147 // calculate rel. difference
1150 if(!hist1) return 0;
1151 if(!hist2) return 0;
1153 TH1 *h1Clone = (TH1D *)hist1->Clone();
1157 h1Clone->Add(hist2,-1);
1158 h1Clone->Divide(hist2);
1163 //_____________________________________________________________________________
1164 TH1* AlidNdPtHelper::CalcRelativeDifferenceFun(const TH1 *const hist1, TF1 *const fun)
1167 // calculate rel. difference
1168 // between histogram and function
1170 if(!hist1) return 0;
1173 TH1 *h1Clone = (TH1D *)hist1->Clone();
1177 h1Clone->Add(fun,-1);
1178 h1Clone->Divide(hist1);
1183 //_____________________________________________________________________________
1184 TH1* AlidNdPtHelper::NormalizeToEvent(const TH2 *const hist1, const TH1 *const hist2)
1186 // normalise to event for a given multiplicity bin
1187 // return pt histogram
1189 if(!hist1) return 0;
1190 if(!hist2) return 0;
1193 Int_t nbinsX = hist1->GetNbinsX();
1194 //Int_t nbinsY = hist1->GetNbinsY();
1197 for(Int_t i=0; i<=nbinsX+1; i++) {
1198 sprintf(name,"mom_%d",i);
1199 TH1D *hist = (TH1D*)hist1->ProjectionY(name,i+1,i+1);
1201 sprintf(name,"mom_norm");
1203 histNorm = (TH1D *)hist->Clone(name);
1207 Double_t nbEvents = hist2->GetBinContent(i);
1208 if(!nbEvents) { nbEvents = 1.; };
1210 hist->Scale(1./nbEvents);
1211 histNorm->Add(hist);
1217 //_____________________________________________________________________________
1218 //THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, char *const name) {
1219 THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char *name) {
1220 // generate correction matrix
1221 if(!hist1 || !hist2) return 0;
1223 THnSparse *h =(THnSparse*)hist1->Clone(name);;
1224 h->Divide(hist1,hist2,1,1,"B");
1229 //_____________________________________________________________________________
1230 //TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1231 TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char *name) {
1232 // generate correction matrix
1233 if(!hist1 || !hist2) return 0;
1235 TH2D *h =(TH2D*)hist1->Clone(name);;
1236 h->Divide(hist1,hist2,1,1,"B");
1241 //_____________________________________________________________________________
1242 //TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1243 TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
1244 // generate correction matrix
1245 if(!hist1 || !hist2) return 0;
1247 TH1D *h =(TH1D*)hist1->Clone(name);;
1248 h->Divide(hist1,hist2,1,1,"B");
1253 //_____________________________________________________________________________
1254 //THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, THnSparse *const hist2, char *const name) {
1255 THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char* name) {
1256 // generate contamination correction matrix
1257 if(!hist1 || !hist2) return 0;
1259 THnSparse *hist = GenerateCorrMatrix(hist1, hist2, name);
1262 // only for non ZERO bins!!!!
1264 Int_t* coord = new Int_t[hist->GetNdimensions()];
1265 memset(coord, 0, sizeof(Int_t) * hist->GetNdimensions());
1267 for (Long64_t i = 0; i < hist->GetNbins(); ++i) {
1268 Double_t v = hist->GetBinContent(i, coord);
1269 hist->SetBinContent(coord, 1.0-v);
1270 //printf("v %f, hist->GetBinContent(i, coord) %f \n",v,hist->GetBinContent(i, coord));
1271 Double_t err = hist->GetBinError(coord);
1272 hist->SetBinError(coord, err);
1280 //_____________________________________________________________________________
1281 //TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1282 TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char* name) {
1283 // generate contamination correction matrix
1284 if(!hist1 || !hist2) return 0;
1286 TH2 *hist = GenerateCorrMatrix(hist1, hist2, name);
1289 Int_t nBinsX = hist->GetNbinsX();
1290 Int_t nBinsY = hist->GetNbinsY();
1292 for (Int_t i = 0; i < nBinsX+1; i++) {
1293 for (Int_t j = 0; j < nBinsY+1; j++) {
1294 Double_t cont = hist->GetBinContent(i,j);
1295 hist->SetBinContent(i,j,1.-cont);
1296 Double_t err = hist->GetBinError(i,j);
1297 hist->SetBinError(i,j,err);
1304 //_____________________________________________________________________________
1305 //TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1306 TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
1307 // generate contamination correction matrix
1308 if(!hist1 || !hist2) return 0;
1310 TH1 *hist = GenerateCorrMatrix(hist1, hist2, name);
1313 Int_t nBinsX = hist->GetNbinsX();
1315 for (Int_t i = 0; i < nBinsX+1; i++) {
1316 Double_t cont = hist->GetBinContent(i);
1317 hist->SetBinContent(i,1.-cont);
1318 Double_t err = hist->GetBinError(i);
1319 hist->SetBinError(i,err);
1325 //_____________________________________________________________________________
1326 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){
1332 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1336 if(!evtCuts || !accCuts || !trackCuts)
1338 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1342 Double_t vtxpos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
1343 Double_t vtxsigma[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
1344 AliESDVertex vtx0(vtxpos,vtxsigma);
1346 Double_t maxDCAr = accCuts->GetMaxDCAr();
1347 Double_t maxDCAz = accCuts->GetMaxDCAz();
1348 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
1351 Int_t ntracks = esdEvent->GetNumberOfTracks();
1352 TVectorD ztrack(ntracks);
1353 Double_t dca[2],cov[3];
1355 for (Int_t i=0;i <ntracks; i++){
1356 AliESDtrack *t = esdEvent->GetTrack(i);
1358 if (!t->GetTPCInnerParam()) continue;
1359 if (t->GetTPCNcls()<minTPCClust) continue;
1362 Double_t x[3]; t->GetXYZ(x);
1363 Double_t b[3]; AliTracker::GetBxByBz(x,b);
1364 const Double_t kMaxStep = 1; //max step over the material
1366 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
1367 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov)) continue;
1370 if (TMath::Abs(dca[0])>maxDCAr) continue;
1371 //if (TMath::Sqrt(cov[0])>sigmaXYcut) continue;
1372 if (TMath::Abs(tpcTrack->GetZ())>maxDCAz) continue;
1374 ztrack[counter]=tpcTrack->GetZ();
1377 if(tpcTrack) delete tpcTrack;
1381 // Find LTM z position
1383 Double_t mean=0, sigma=0;
1384 if (counter<ntracksMin) return 0;
1386 Int_t nused = TMath::Nint(counter*fraction);
1387 if (nused==counter) nused=counter-1;
1389 AliMathBase::EvaluateUni(counter, ztrack.GetMatrixArray(), mean,sigma, TMath::Nint(counter*fraction));
1390 sigma/=TMath::Sqrt(nused);
1392 mean = TMath::Mean(counter, ztrack.GetMatrixArray());
1393 sigma = TMath::RMS(counter, ztrack.GetMatrixArray());
1394 sigma/=TMath::Sqrt(counter-1);
1398 const AliESDVertex* vertex = new AliESDVertex(vtxpos, vtxsigma);
1402 //_____________________________________________________________________________
1403 Int_t AlidNdPtHelper::GetSPDMBTrackMult(const AliESDEvent* const esdEvent, Float_t deltaThetaCut, Float_t deltaPhiCut)
1406 // SPD track multiplicity
1410 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1414 // get multiplicity from SPD tracklets
1415 Int_t inputCount = 0;
1416 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1418 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1420 Float_t phi = mult->GetPhi(i);
1422 phi += TMath::Pi() * 2;
1423 Float_t deltaPhi = mult->GetDeltaPhi(i);
1424 Float_t deltaTheta = mult->GetDeltaTheta(i);
1426 if (TMath::Abs(deltaPhi) > 1)
1427 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1429 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1432 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1441 //_____________________________________________________________________________
1442 Int_t AlidNdPtHelper::GetSPDMBPrimTrackMult(const AliESDEvent* const esdEvent, AliStack* const stack, Float_t deltaThetaCut, Float_t deltaPhiCut)
1445 // SPD track multiplicity
1449 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1453 // get multiplicity from SPD tracklets
1454 Int_t inputCount = 0;
1455 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1457 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1459 Float_t phi = mult->GetPhi(i);
1461 phi += TMath::Pi() * 2;
1462 Float_t deltaPhi = mult->GetDeltaPhi(i);
1463 Float_t deltaTheta = mult->GetDeltaTheta(i);
1465 if (TMath::Abs(deltaPhi) > 1)
1466 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1468 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1471 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1475 if (mult->GetLabel(i, 0) < 0 || mult->GetLabel(i, 0) != mult->GetLabel(i, 1) ||
1476 !stack->IsPhysicalPrimary(mult->GetLabel(i, 0)))
1485 //_____________________________________________________________________________
1487 THnSparse* AlidNdPtHelper::RebinTHnSparse(const THnSparse* hist1, THnSparse* hist2, const Char_t* newname, Option_t* option)
1489 THnSparse* htemp = 0;
1490 const THnSparse* hist = 0;
1491 TString opt = option;
1493 Bool_t calcErrors = kFALSE;
1494 Bool_t useRange = kFALSE;
1495 Bool_t overwrite = kFALSE;
1496 if (opt.Contains("e")) { calcErrors = kTRUE; } // calcluate correct errors (not implemented)
1497 if (opt.Contains("r")) { useRange = kTRUE; } // use the axis range given in hist1
1498 if (opt.Contains("o")) { overwrite = kTRUE; } // overwrite hist2 instead of creating a new one
1499 Int_t ndim = hist1->GetNdimensions();
1500 if (ndim != hist2->GetNdimensions()) {
1501 printf("AlidNdPtHelper::RebinTHnSparse: ERROR: Histograms have different dimensions \n");
1504 Int_t* dims = new Int_t[ndim];
1505 for (Int_t i = 0; i < ndim; i++) { dims[i] = i; }
1507 htemp = hist1->Projection(ndim,dims,"e");
1509 } else { hist = hist1; }
1510 //THnSparse* hnew = hist2->Projection(ndim,dims,"o");
1511 //hnew->SetName(newname);
1512 THnSparse* hnew = 0;
1516 hnew = (THnSparse*) hist2->Clone(newname);
1518 for (Int_t i = 0; i < ndim; i++) { hnew->GetAxis(i)->SetRange(); }
1519 hnew->SetTitle(hist1->GetTitle());
1524 Int_t* c = new Int_t[ndim];
1525 Double_t* x = new Double_t[ndim];
1526 Long64_t n = hist->GetNbins();
1527 for (Long64_t j = 0; j < n; j++) {
1528 content = hist->GetBinContent(j,c);
1529 error = hist->GetBinError(j);
1530 for (Int_t i = 0; i < ndim; i++) {
1531 x[i] = hist->GetAxis(i)->GetBinCenter(c[i]);
1533 /* function IsInRange is protected, shit!
1535 if (! hist1->IsInRange(c)) continue;
1539 // implementation to be done
1541 hnew->Fill(x,content);
1546 delete[] dims; dims=0;
1547 if (htemp) { delete htemp; htemp = 0;}