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classes for limnosity related info from LHC DIP data.
[u/mrichter/AliRoot.git] / PWG0 / dNdPt / AlidNdPtHelper.cxx
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0aaa8b91 1/**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
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 **************************************************************************/
15
16#include <TROOT.h>
17#include <TParticle.h>
18#include <TParticlePDG.h>
19#include <TH1.h>
20#include <TH2.h>
21#include <TH3.h>
22#include <TCanvas.h>
23#include <TList.h>
24#include <TTree.h>
25#include <TBranch.h>
26#include <TLeaf.h>
27#include <TArrayI.h>
28#include <TF1.h>
847e74b2 29#include <TLorentzVector.h>
0aaa8b91 30
31#include <AliHeader.h>
32#include <AliStack.h>
33#include <AliLog.h>
34
0aaa8b91 35#include <AliESD.h>
36#include <AliESDEvent.h>
37#include <AliMCEvent.h>
38#include <AliESDVertex.h>
39#include <AliVertexerTracks.h>
40
41#include <AliGenEventHeader.h>
42#include <AliGenPythiaEventHeader.h>
43#include <AliGenCocktailEventHeader.h>
44#include <AliGenDPMjetEventHeader.h>
45
46#include <AliMathBase.h>
47#include <AliESDtrackCuts.h>
48#include "dNdPt/AlidNdPtEventCuts.h"
49#include "dNdPt/AlidNdPtAcceptanceCuts.h"
50#include "dNdPt/AlidNdPtHelper.h"
51
52//____________________________________________________________________
53ClassImp(AlidNdPtHelper)
54
0aaa8b91 55//____________________________________________________________________
56const AliESDVertex* AlidNdPtHelper::GetVertex(AliESDEvent* aEsd, AlidNdPtEventCuts *evtCuts, AlidNdPtAcceptanceCuts *accCuts, AliESDtrackCuts *trackCuts, AnalysisMode analysisMode, Bool_t debug, Bool_t bRedoTPC, Bool_t bUseMeanVertex)
57{
58 // Get the vertex from the ESD and returns it if the vertex is valid
59 //
60 // Second argument decides which vertex is used (this selects
61 // also the quality criteria that are applied)
62
63 if(!aEsd)
64 {
65 ::Error("AlidNdPtHelper::GetVertex()","esd event is NULL");
66 return NULL;
67 }
68
69 if(!evtCuts || !accCuts || !trackCuts)
70 {
71 ::Error("AlidNdPtHelper::GetVertex()","cuts not available");
72 return NULL;
73 }
74
75 const AliESDVertex* vertex = 0;
76 AliESDVertex *initVertex = 0;
847e74b2 77 if (analysisMode == kSPD || analysisMode == kTPCITS || analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate)
0aaa8b91 78 {
79 vertex = aEsd->GetPrimaryVertexSPD();
80 if (debug)
81 Printf("AlidNdPtHelper::GetVertex: Returning SPD vertex");
82 }
847e74b2 83 else if (analysisMode == kTPC)
0aaa8b91 84 {
85 if(bRedoTPC) {
86
87 Double_t kBz = aEsd->GetMagneticField();
88 AliVertexerTracks vertexer(kBz);
89
90 if(bUseMeanVertex) {
91 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
92 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
0aaa8b91 93 initVertex = new AliESDVertex(pos,err);
94 vertexer.SetVtxStart(initVertex);
95 vertexer.SetConstraintOn();
96 }
97
0aaa8b91 98 Double_t maxDCAr = accCuts->GetMaxDCAr();
99 Double_t maxDCAz = accCuts->GetMaxDCAz();
100 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
101
bad4ba69 102 //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);
0aaa8b91 103 vertexer.SetTPCMode(0.1,1.0,5.0,minTPCClust,1,3.,0.1,2.0,maxDCAr,maxDCAz,1,4);
104
105 // TPC track preselection
106 Int_t ntracks = aEsd->GetNumberOfTracks();
107 TObjArray array(ntracks);
108 UShort_t *id = new UShort_t[ntracks];
109
110 Int_t count=0;
111 for (Int_t i=0;i <ntracks; i++) {
112 AliESDtrack *t = aEsd->GetTrack(i);
113 if (!t) continue;
114 if (t->Charge() == 0) continue;
115 if (!t->GetTPCInnerParam()) continue;
116 if (t->GetTPCNcls()<vertexer.GetMinClusters()) continue;
117 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
118 if(tpcTrack) {
119 array.AddLast(tpcTrack);
120 id[count] = (UShort_t)t->GetID();
121 count++;
122 }
123 }
124 AliESDVertex *vTPC = vertexer.VertexForSelectedTracks(&array,id, kTRUE, kTRUE, bUseMeanVertex);
bad4ba69 125
126 // set recreated TPC vertex
0aaa8b91 127 aEsd->SetPrimaryVertexTPC(vTPC);
128
129 for (Int_t i=0; i<aEsd->GetNumberOfTracks(); i++) {
130 AliESDtrack *t = aEsd->GetTrack(i);
131 t->RelateToVertexTPC(vTPC, kBz, kVeryBig);
132 }
133
134 delete vTPC;
135 array.Delete();
136 delete [] id; id=NULL;
137
138 }
139 vertex = aEsd->GetPrimaryVertexTPC();
140 if (debug)
141 Printf("AlidNdPtHelper::GetVertex: Returning vertex from tracks");
142 }
143 else
144 Printf("AlidNdPtHelper::GetVertex: ERROR: Invalid second argument %d", analysisMode);
145
146 if (!vertex) {
147 if (debug)
148 Printf("AlidNdPtHelper::GetVertex: No vertex found in ESD");
149 return 0;
150 }
151
152 if (debug)
153 {
154 Printf("AlidNdPtHelper::GetVertex: Returning valid vertex: %s", vertex->GetTitle());
155 vertex->Print();
156 }
157
158 if(initVertex) delete initVertex; initVertex=NULL;
159 return vertex;
160}
161
bad4ba69 162//____________________________________________________________________
163Bool_t AlidNdPtHelper::TestRecVertex(const AliESDVertex* vertex, AnalysisMode analysisMode, Bool_t debug)
164{
165 // Checks if a vertex meets the needed quality criteria
166 if(!vertex) return kFALSE;
167
168 Float_t requiredZResolution = -1;
847e74b2 169 if (analysisMode == kSPD || analysisMode == kTPCITS || analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate)
bad4ba69 170 {
171 requiredZResolution = 0.1;
172 }
847e74b2 173 else if (analysisMode == kTPC)
bad4ba69 174 requiredZResolution = 10.;
175
176 // check Ncontributors
177 if (vertex->GetNContributors() <= 0) {
178 if (debug){
179 Printf("AlidNdPtHelper::GetVertex: NContributors() <= 0: %d",vertex->GetNContributors());
180 Printf("AlidNdPtHelper::GetVertex: NIndices(): %d",vertex->GetNIndices());
181 vertex->Print();
182 }
183 return kFALSE;
184 }
185
186 // check resolution
187 Double_t zRes = vertex->GetZRes();
188 if (zRes == 0) {
189 Printf("AlidNdPtHelper::GetVertex: UNEXPECTED: resolution is 0.");
190 return kFALSE;
191 }
192
193 if (zRes > requiredZResolution) {
194 if (debug)
195 Printf("AlidNdPtHelper::TestVertex: Resolution too poor %f (required: %f", zRes, requiredZResolution);
196 return kFALSE;
197 }
198
199 return kTRUE;
200}
201
0aaa8b91 202//____________________________________________________________________
847e74b2 203Bool_t AlidNdPtHelper::IsPrimaryParticle(AliStack* stack, Int_t idx, ParticleMode particleMode)
0aaa8b91 204{
205// check primary particles
847e74b2 206// depending on the particle mode
0aaa8b91 207//
208 if(!stack) return kFALSE;
209
210 TParticle* particle = stack->Particle(idx);
211 if (!particle) return kFALSE;
212
213 // only charged particles
214 Double_t charge = particle->GetPDG()->Charge()/3.;
215 if (charge == 0.0) return kFALSE;
216
217 Int_t pdg = TMath::Abs(particle->GetPdgCode());
218
219 // physical primary
220 Bool_t prim = stack->IsPhysicalPrimary(idx);
221
847e74b2 222 if(particleMode==kMCPion) {
0aaa8b91 223 if(prim && pdg==kPiPlus) return kTRUE;
224 else return kFALSE;
225 }
226
847e74b2 227 if (particleMode==kMCKaon) {
0aaa8b91 228 if(prim && pdg==kKPlus) return kTRUE;
229 else return kFALSE;
230 }
231
847e74b2 232 if (particleMode==kMCProton) {
0aaa8b91 233 if(prim && pdg==kProton) return kTRUE;
234 else return kFALSE;
235 }
236
237return prim;
238}
239
847e74b2 240//____________________________________________________________________
241Bool_t AlidNdPtHelper::IsCosmicTrack(TObjArray *allChargedTracks, AliESDtrack *track1, Int_t trackIdx, AlidNdPtAcceptanceCuts *accCuts, AliESDtrackCuts *trackCuts)
242{
243//
244// check cosmic tracks
245//
246 if(!allChargedTracks) return kFALSE;
247 if(!track1) return kFALSE;
248 if(!accCuts) return kFALSE;
249 if(!trackCuts) return kFALSE;
250
251 Int_t entries = allChargedTracks->GetEntries();
252 for(Int_t i=0; i<entries;++i)
253 {
254 //
255 // exclude the same tracks
256 //
257 if(i == trackIdx) continue;
258
259 AliESDtrack *track2 = (AliESDtrack*)allChargedTracks->At(i);
260 if(!track2) continue;
261 if(track2->Charge()==0) continue;
262
263 /*
264 if(track1->Pt() > 6. && track2->Pt() > 6. && (track1->Charge() + track2->Charge()) == 0 )
265 {
266 printf("track1->Theta() %f, track1->Eta() %f, track1->Phi() %f, track1->Charge() %d \n", track1->Theta(), track1->Eta(), track1->Phi(), track1->Charge());
267 printf("track2->Theta() %f, track2->Eta() %f, track2->Phi() %f, track2->Charge() %d \n", track2->Theta(), track2->Eta(), track2->Phi(), track2->Charge());
268
269 printf("deta %f, dphi %f, dq %d \n", track1->Eta()-track2->Eta(), track1->Phi()-track2->Phi(), track1->Charge()+track2->Charge());
270
271 }
272 */
273
274 //
275 // cosmic tracks in TPC
276 //
277 //if( TMath::Abs( track1->Theta() - track2->Theta() ) < 0.004 &&
278 // ((TMath::Abs(track1->Phi()-track2->Phi()) - TMath::Pi() )<0.004) &&
279 if( (track1->Pt()-track2->Pt()) < 0.1 && track1->Pt() > 6.0 &&
280 (track1->Charge()+track2->Charge()) == 0 )
281 {
282 //printf("COSMIC candidate \n");
283 printf("track1->Theta() %f, track1->Eta() %f, track1->Phi() %f, track1->Charge() %d \n", track1->Theta(), track1->Eta(), track1->Phi(), track1->Charge());
284 printf("track2->Theta() %f, track2->Eta() %f, track2->Phi() %f, track2->Charge() %d \n", track2->Theta(), track2->Eta(), track2->Phi(), track2->Charge());
285 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());
286 return kTRUE;
287 }
288 }
289
290return kFALSE;
291}
292
0aaa8b91 293//____________________________________________________________________
70fdd197 294void AlidNdPtHelper::PrintConf(AnalysisMode analysisMode, AliTriggerAnalysis::Trigger trigger)
0aaa8b91 295{
296 //
297 // Prints the given configuration
298 //
299
300 TString str(">>>> Running with ");
301
302 switch (analysisMode)
303 {
304 case kInvalid: str += "invalid setting"; break;
305 case kSPD : str += "SPD-only"; break;
306 case kTPC : str += "TPC-only"; break;
307 case kTPCITS : str += "Global tracking"; break;
308 case kTPCSPDvtx : str += "TPC tracking + SPD event vertex"; break;
847e74b2 309 case kTPCSPDvtxUpdate : str += "TPC tracks updated with SPD event vertex point"; break;
0aaa8b91 310 case kMCRec : str += "TPC tracking + Replace rec. with MC values"; break;
0aaa8b91 311 }
312 str += " and trigger ";
313
70fdd197 314 str += AliTriggerAnalysis::GetTriggerName(trigger);
0aaa8b91 315
316 str += " <<<<";
317
318 Printf("%s", str.Data());
319}
320
321//____________________________________________________________________
322Int_t AlidNdPtHelper::ConvertPdgToPid(TParticle *particle) {
323//
324// Convert Abs(pdg) to pid
325// (0 - e, 1 - muons, 2 - pions, 3 - kaons, 4 - protons, 5 -all rest)
326//
327Int_t pid=-1;
328
329 if (TMath::Abs(particle->GetPdgCode()) == kElectron) { pid = 0; }
330 else if (TMath::Abs(particle->GetPdgCode()) == kMuonMinus) { pid = 1; }
331 else if (TMath::Abs(particle->GetPdgCode()) == kPiPlus) { pid = 2; }
332 else if (TMath::Abs(particle->GetPdgCode()) == kKPlus) { pid = 3; }
333 else if (TMath::Abs(particle->GetPdgCode()) == kProton) { pid = 4; }
334 else { pid = 5; }
335
336return pid;
337}
338
339//_____________________________________________________________________________
340TH1F* AlidNdPtHelper::CreateResHisto(TH2F* hRes2, TH1F **phMean, Int_t integ, Bool_t drawBinFits, Int_t minHistEntries)
341{
bad4ba69 342//
343// Create mean and resolution
344// histograms
345//
0aaa8b91 346 TVirtualPad* currentPad = gPad;
347 TAxis* axis = hRes2->GetXaxis();
348 Int_t nBins = axis->GetNbins();
349 Bool_t overflowBinFits = kFALSE;
350 TH1F* hRes, *hMean;
351 if (axis->GetXbins()->GetSize()){
352 hRes = new TH1F("hRes", "", nBins, axis->GetXbins()->GetArray());
353 hMean = new TH1F("hMean", "", nBins, axis->GetXbins()->GetArray());
354 }
355 else{
356 hRes = new TH1F("hRes", "", nBins, axis->GetXmin(), axis->GetXmax());
357 hMean = new TH1F("hMean", "", nBins, axis->GetXmin(), axis->GetXmax());
358
359 }
360 hRes->SetStats(false);
361 hRes->SetOption("E");
362 hRes->SetMinimum(0.);
363 //
364 hMean->SetStats(false);
365 hMean->SetOption("E");
366
367 // create the fit function
368 TF1 * fitFunc = new TF1("G","[0]*exp(-(x-[1])*(x-[1])/(2.*[2]*[2]))",-3,3);
369
370 fitFunc->SetLineWidth(2);
371 fitFunc->SetFillStyle(0);
372 // create canvas for fits
373 TCanvas* canBinFits = NULL;
374 Int_t nPads = (overflowBinFits) ? nBins+2 : nBins;
375 Int_t nx = Int_t(sqrt(nPads-1.));// + 1;
376 Int_t ny = (nPads-1) / nx + 1;
377 if (drawBinFits) {
378 canBinFits = (TCanvas*)gROOT->FindObject("canBinFits");
379 if (canBinFits) delete canBinFits;
380 canBinFits = new TCanvas("canBinFits", "fits of bins", 200, 100, 500, 700);
381 canBinFits->Divide(nx, ny);
382 }
383
384 // loop over x bins and fit projection
385 Int_t dBin = ((overflowBinFits) ? 1 : 0);
386 for (Int_t bin = 1-dBin; bin <= nBins+dBin; bin++) {
387 if (drawBinFits) canBinFits->cd(bin + dBin);
388 Int_t bin0=TMath::Max(bin-integ,0);
389 Int_t bin1=TMath::Min(bin+integ,nBins);
390 TH1D* hBin = hRes2->ProjectionY("hBin", bin0, bin1);
391 //
392 if (hBin->GetEntries() > minHistEntries) {
393 fitFunc->SetParameters(hBin->GetMaximum(),hBin->GetMean(),hBin->GetRMS());
394 hBin->Fit(fitFunc,"s");
395 Double_t sigma = TMath::Abs(fitFunc->GetParameter(2));
396
397 if (sigma > 0.){
398 hRes->SetBinContent(bin, TMath::Abs(fitFunc->GetParameter(2)));
399 hMean->SetBinContent(bin, fitFunc->GetParameter(1));
400 }
401 else{
402 hRes->SetBinContent(bin, 0.);
403 hMean->SetBinContent(bin,0);
404 }
405 hRes->SetBinError(bin, fitFunc->GetParError(2));
406 hMean->SetBinError(bin, fitFunc->GetParError(1));
407
408 //
409 //
410
411 } else {
412 hRes->SetBinContent(bin, 0.);
413 hRes->SetBinError(bin, 0.);
414 hMean->SetBinContent(bin, 0.);
415 hMean->SetBinError(bin, 0.);
416 }
417
418
419 if (drawBinFits) {
420 char name[256];
421 if (bin == 0) {
422 sprintf(name, "%s < %.4g", axis->GetTitle(), axis->GetBinUpEdge(bin));
423 } else if (bin == nBins+1) {
424 sprintf(name, "%.4g < %s", axis->GetBinLowEdge(bin), axis->GetTitle());
425 } else {
426 sprintf(name, "%.4g < %s < %.4g", axis->GetBinLowEdge(bin),
427 axis->GetTitle(), axis->GetBinUpEdge(bin));
428 }
429 canBinFits->cd(bin + dBin);
430 hBin->SetTitle(name);
431 hBin->SetStats(kTRUE);
432 hBin->DrawCopy("E");
433 canBinFits->Update();
434 canBinFits->Modified();
435 canBinFits->Update();
436 }
437
438 delete hBin;
439 }
440
441 delete fitFunc;
442 currentPad->cd();
443 *phMean = hMean;
444 return hRes;
445}
446
447//_____________________________________________________________________________
448TH1F* AlidNdPtHelper::MakeResol(TH2F * his, Int_t integ, Bool_t type, Bool_t drawBins, Int_t minHistEntries){
449// Create resolution histograms
450
451 TH1F *hisr=0, *hism=0;
452 if (!gPad) new TCanvas;
0aaa8b91 453 hisr = CreateResHisto(his,&hism,integ,drawBins,minHistEntries);
454 if (type) return hism;
455 else return hisr;
456
457return hisr;
458}
459
460//_____________________________________________________________________________
bad4ba69 461TObjArray* AlidNdPtHelper::GetAllChargedTracks(AliESDEvent *esdEvent, AnalysisMode analysisMode)
0aaa8b91 462{
463 //
464 // all charged TPC particles
465 //
466 TObjArray *allTracks = new TObjArray();
467 if(!allTracks) return allTracks;
468
469 AliESDtrack *track=0;
470 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
471 {
847e74b2 472 if(analysisMode == AlidNdPtHelper::kTPC) {
473 // track must be deleted by user
bad4ba69 474 track = AliESDtrackCuts::GetTPCOnlyTrack(esdEvent,iTrack);
847e74b2 475 if(!track) continue;
476 }
477 else if (analysisMode == AlidNdPtHelper::kTPCSPDvtx || AlidNdPtHelper::kTPCSPDvtxUpdate)
478 {
479 // track must be deleted by the user
480 track = AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(esdEvent,iTrack,kFALSE);
481 if(!track) continue;
482 }
483 else {
0aaa8b91 484 track=esdEvent->GetTrack(iTrack);
485 }
486 if(!track) continue;
487
488 if(track->Charge()==0) {
847e74b2 489 if(analysisMode == AlidNdPtHelper::kTPC || analysisMode == AlidNdPtHelper::kTPCSPDvtx ||
490 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate)
491 {
0aaa8b91 492 delete track; continue;
493 } else {
494 continue;
495 }
496 }
497
498 allTracks->Add(track);
499 }
bad4ba69 500
501 if(analysisMode == AlidNdPtHelper::kTPC || analysisMode == AlidNdPtHelper::kTPCSPDvtx ||
847e74b2 502 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate) {
bad4ba69 503
504 allTracks->SetOwner(kTRUE);
505 }
0aaa8b91 506
507return allTracks;
508}
509
847e74b2 510//_____________________________________________________________________________
511AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
512{
513//
514// Create ESD tracks from TPCinner parameters.
515// Propagte to DCA to SPD vertex.
516// Update using SPD vertex point (parameter)
517//
518// It is user responsibility to delete these tracks
519//
520
521 if (!esdEvent) return NULL;
522 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
523 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
524
525 //
526 AliESDtrack* track = esdEvent->GetTrack(iTrack);
527 if (!track)
528 return NULL;
529
530 // create new ESD track
531 AliESDtrack *tpcTrack = new AliESDtrack();
532
533 // relate TPC-only tracks (TPCinner) to SPD vertex
534 AliExternalTrackParam cParam;
535 if(bUpdate) {
536 track->RelateToVertexTPC(esdEvent->GetPrimaryVertexSPD(),esdEvent->GetMagneticField(),kVeryBig,&cParam);
537 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
538
539 // reject fake tracks
540 if(track->Pt() > 10000.) {
541 ::Error("Exclude no physical tracks","pt>10000. GeV");
542 delete tpcTrack;
543 return NULL;
544 }
545 }
546 else {
547 track->RelateToVertexTPC(esdEvent->GetPrimaryVertexSPD(), esdEvent->GetMagneticField(), kVeryBig);
548 }
549
550 // only true if we have a tpc track
551 if (!track->FillTPCOnlyTrack(*tpcTrack))
552 {
553 delete tpcTrack;
554 return NULL;
555 }
556
557return tpcTrack;
558}
559
0aaa8b91 560//_____________________________________________________________________________
561Int_t AlidNdPtHelper::GetTPCMBTrackMult(AliESDEvent *esdEvent, AlidNdPtEventCuts *evtCuts, AlidNdPtAcceptanceCuts *accCuts, AliESDtrackCuts *trackCuts)
562{
563 //
564 // get MB event track multiplicity
565 //
566 if(!esdEvent)
567 {
568 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","esd event is NULL");
569 return 0;
570 }
571
572 if(!evtCuts || !accCuts || !trackCuts)
573 {
574 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","cuts not available");
575 return 0;
576 }
577
578 //
579 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
580 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
581 AliESDVertex vtx0(pos,err);
582
583 //
584 Float_t maxDCAr = accCuts->GetMaxDCAr();
585 Float_t maxDCAz = accCuts->GetMaxDCAz();
586 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
587 //
588 Int_t ntracks = esdEvent->GetNumberOfTracks();
589 Double_t dca[2],cov[3];
590 Int_t mult=0;
591 for (Int_t i=0;i <ntracks; i++){
592 AliESDtrack *t = esdEvent->GetTrack(i);
593 if (!t) continue;
594 if (t->Charge() == 0) continue;
595 if (!t->GetTPCInnerParam()) continue;
596 if (t->GetTPCNcls()<minTPCClust) continue;
597 //
598 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
599 if (!tpcTrack->PropagateToDCA(&vtx0,esdEvent->GetMagneticField(),100.,dca,cov))
600 {
601 if(tpcTrack) delete tpcTrack;
602 continue;
603 }
604 //
605 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
606 if(tpcTrack) delete tpcTrack;
607 continue;
608 }
609
610 mult++;
611
612 if(tpcTrack) delete tpcTrack;
613 }
614
615return mult;
616}
617
618//_____________________________________________________________________________
619Int_t AlidNdPtHelper::GetTPCMBPrimTrackMult(AliESDEvent *esdEvent, AliStack * stack, AlidNdPtEventCuts *evtCuts, AlidNdPtAcceptanceCuts *accCuts, AliESDtrackCuts *trackCuts)
620{
621 //
622 // get MB primary event track multiplicity
623 //
624 if(!esdEvent)
625 {
626 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
627 return 0;
628 }
629
630 if(!stack)
631 {
632 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
633 return 0;
634 }
635
636 if(!evtCuts || !accCuts || !trackCuts)
637 {
638 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","cuts not available");
639 return 0;
640 }
641
642 //
643 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
644 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
645 AliESDVertex vtx0(pos,err);
646
647 //
648 Float_t maxDCAr = accCuts->GetMaxDCAr();
649 Float_t maxDCAz = accCuts->GetMaxDCAz();
650 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
651
652 //
653 Int_t ntracks = esdEvent->GetNumberOfTracks();
654 Double_t dca[2],cov[3];
655 Int_t mult=0;
656 for (Int_t i=0;i <ntracks; i++){
657 AliESDtrack *t = esdEvent->GetTrack(i);
658 if (!t) continue;
659 if (t->Charge() == 0) continue;
660 if (!t->GetTPCInnerParam()) continue;
661 if (t->GetTPCNcls()<minTPCClust) continue;
662 //
663 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
664 if (!tpcTrack->PropagateToDCA(&vtx0,esdEvent->GetMagneticField(),100.,dca,cov))
665 {
666 if(tpcTrack) delete tpcTrack;
667 continue;
668 }
669 //
670 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
671 if(tpcTrack) delete tpcTrack;
672 continue;
673 }
674
675 Int_t label = TMath::Abs(t->GetLabel());
676 TParticle *part = stack->Particle(label);
677 if(!part) {
678 if(tpcTrack) delete tpcTrack;
679 continue;
680 }
681 if(!stack->IsPhysicalPrimary(label))
682 {
683 if(tpcTrack) delete tpcTrack;
684 continue;
685 }
686
687 mult++;
688
689 if(tpcTrack) delete tpcTrack;
690 }
691
692return mult;
693}
694
695
696
697
698
699//_____________________________________________________________________________
700Int_t AlidNdPtHelper::GetMCTrueTrackMult(AliMCEvent *mcEvent, AlidNdPtEventCuts *evtCuts, AlidNdPtAcceptanceCuts *accCuts)
701{
702 //
703 // calculate mc event true track multiplicity
704 //
705 if(!mcEvent) return 0;
706
707 AliStack* stack = 0;
708 Int_t mult = 0;
709
710 // MC particle stack
711 stack = mcEvent->Stack();
712 if (!stack) return 0;
713
714 Bool_t isEventOK = evtCuts->AcceptMCEvent(mcEvent);
715 if(!isEventOK) return 0;
716
717 Int_t nPart = stack->GetNtrack();
718 for (Int_t iMc = 0; iMc < nPart; ++iMc)
719 {
720 TParticle* particle = stack->Particle(iMc);
721 if (!particle)
722 continue;
723
724 // only charged particles
725 Double_t charge = particle->GetPDG()->Charge()/3.;
726 if (charge == 0.0)
727 continue;
728
729 // physical primary
730 Bool_t prim = stack->IsPhysicalPrimary(iMc);
731 if(!prim) continue;
732
733 // checked accepted
734 if(accCuts->AcceptTrack(particle))
735 {
736 mult++;
737 }
738 }
739
740return mult;
741}
742
743//_______________________________________________________________________
744void AlidNdPtHelper::PrintMCInfo(AliStack *pStack,Int_t label)
745{
746// print information about particles in the stack
747
748 if(!pStack)return;
749 label = TMath::Abs(label);
750 TParticle *part = pStack->Particle(label);
751 Printf("########################");
752 Printf("%s:%d %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,label,part->GetUniqueID(),part->GetPdgCode(),part->P());
753 part->Print();
754 TParticle* mother = part;
755 Int_t imo = part->GetFirstMother();
756 Int_t nprim = pStack->GetNprimary();
757
758 while((imo >= nprim)) {
759 mother = pStack->Particle(imo);
760 Printf("Mother %s:%d Label %d UniqueID %d PDG %d P %3.3f",(char*)__FILE__,__LINE__,imo,mother->GetUniqueID(),mother->GetPdgCode(),mother->P());
761 mother->Print();
762 imo = mother->GetFirstMother();
763 }
764
765 Printf("########################");
766}
767
768
769//_____________________________________________________________________________
770TH1* AlidNdPtHelper::GetContCorrHisto(TH1 *hist)
771{
772//
773// get contamination histogram
774//
775 if(!hist) return 0;
776
777 Int_t nbins = hist->GetNbinsX();
778 TH1 *h_cont = (TH1D *)hist->Clone();
779
780 for(Int_t i=0; i<=nbins+1; i++) {
781 Double_t binContent = hist->GetBinContent(i);
782 Double_t binError = hist->GetBinError(i);
783
784 h_cont->SetBinContent(i,1.-binContent);
785 h_cont->SetBinError(i,binError);
786 }
787
788return h_cont;
789}
790
791
792//_____________________________________________________________________________
793TH1* AlidNdPtHelper::ScaleByBinWidth(TH1 *hist)
794{
795//
796// scale by bin width
797//
798 if(!hist) return 0;
799
800 TH1 *h_scale = (TH1D *)hist->Clone();
801 h_scale->Scale(1.,"width");
802
803return h_scale;
804}
805
806//_____________________________________________________________________________
807TH1* AlidNdPtHelper::CalcRelativeDifference(TH1 *hist1, TH1 *hist2)
808{
809//
810// calculate rel. difference
811//
812
813 if(!hist1) return 0;
814 if(!hist2) return 0;
815
816 TH1 *h1_clone = (TH1D *)hist1->Clone();
817 h1_clone->Sumw2();
818
819 // (rec-mc)/mc
820 h1_clone->Add(hist2,-1);
821 h1_clone->Divide(hist2);
822
823return h1_clone;
824}
825
826//_____________________________________________________________________________
827TH1* AlidNdPtHelper::CalcRelativeDifferenceFun(TH1 *hist1, TF1 *fun)
828{
829//
08a80bfe 830// calculate rel. difference
0aaa8b91 831// between histogram and function
832//
833 if(!hist1) return 0;
834 if(!fun) return 0;
835
836 TH1 *h1_clone = (TH1D *)hist1->Clone();
837 h1_clone->Sumw2();
838
839 //
840 h1_clone->Add(fun,-1);
841 h1_clone->Divide(hist1);
842
843return h1_clone;
844}
845
846//_____________________________________________________________________________
847TH1* AlidNdPtHelper::NormalizeToEvent(TH2 *hist1, TH1 *hist2)
848{
849// normalise to event for a given multiplicity bin
850// return pt histogram
851
852 if(!hist1) return 0;
853 if(!hist2) return 0;
854 char name[256];
855
856 Int_t nbinsX = hist1->GetNbinsX();
857 //Int_t nbinsY = hist1->GetNbinsY();
858
859 TH1D *hist_norm = 0;
860 for(Int_t i=0; i<=nbinsX+1; i++) {
861 sprintf(name,"mom_%d",i);
862 TH1D *hist = (TH1D*)hist1->ProjectionY(name,i+1,i+1);
863
864 sprintf(name,"mom_norm");
865 if(i==0) {
866 hist_norm = (TH1D *)hist->Clone(name);
867 hist_norm->Reset();
868 }
869
870 Double_t nbEvents = hist2->GetBinContent(i);
871 if(!nbEvents) { nbEvents = 1.; };
872
873 hist->Scale(1./nbEvents);
874 hist_norm->Add(hist);
875 }
876
877return hist_norm;
878}
879
880//_____________________________________________________________________________
881THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *hist1, THnSparse *hist2, char *name) {
882// generate correction matrix
883if(!hist1 || !hist2) return 0;
884
885THnSparse *h =(THnSparse*)hist1->Clone(name);;
886h->Divide(hist1,hist2,1,1,"B");
887
888return h;
889}
890
891//_____________________________________________________________________________
892TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *hist1, TH2 *hist2, char *name) {
893// generate correction matrix
894if(!hist1 || !hist2) return 0;
895
896TH2D *h =(TH2D*)hist1->Clone(name);;
897h->Divide(hist1,hist2,1,1,"B");
898
899return h;
900}
901
902//_____________________________________________________________________________
903TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *hist1, TH1 *hist2, char *name) {
904// generate correction matrix
905if(!hist1 || !hist2) return 0;
906
907TH1D *h =(TH1D*)hist1->Clone(name);;
908h->Divide(hist1,hist2,1,1,"B");
909
910return h;
911}
912
913//_____________________________________________________________________________
914THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *hist1, THnSparse *hist2, char *name) {
915// generate contamination correction matrix
916if(!hist1 || !hist2) return 0;
917
918THnSparse *hist = GenerateCorrMatrix(hist1, hist2, name);
919if(!hist) return 0;
920
921// only for non ZERO bins!!!!
922
923Int_t* coord = new Int_t[hist->GetNdimensions()];
924memset(coord, 0, sizeof(Int_t) * hist->GetNdimensions());
925
926 for (Long64_t i = 0; i < hist->GetNbins(); ++i) {
927 Double_t v = hist->GetBinContent(i, coord);
928 hist->SetBinContent(coord, 1.0-v);
929 //printf("v %f, hist->GetBinContent(i, coord) %f \n",v,hist->GetBinContent(i, coord));
930 Double_t err = hist->GetBinError(coord);
931 hist->SetBinError(coord, err);
932 }
933
934delete [] coord;
935
936return hist;
937}
938
939//_____________________________________________________________________________
940TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *hist1, TH2 *hist2, char *name) {
941// generate contamination correction matrix
942if(!hist1 || !hist2) return 0;
943
944TH2 *hist = GenerateCorrMatrix(hist1, hist2, name);
945if(!hist) return 0;
946
947Int_t nBinsX = hist->GetNbinsX();
948Int_t nBinsY = hist->GetNbinsY();
949
950 for (Int_t i = 0; i < nBinsX+1; i++) {
951 for (Int_t j = 0; j < nBinsY+1; j++) {
952 Double_t cont = hist->GetBinContent(i,j);
953 hist->SetBinContent(i,j,1.-cont);
954 Double_t err = hist->GetBinError(i,j);
955 hist->SetBinError(i,j,err);
956 }
957 }
958
959return hist;
960}
961
962//_____________________________________________________________________________
963TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *hist1, TH1 *hist2, char *name) {
964// generate contamination correction matrix
965if(!hist1 || !hist2) return 0;
966
967TH1 *hist = GenerateCorrMatrix(hist1, hist2, name);
968if(!hist) return 0;
969
970Int_t nBinsX = hist->GetNbinsX();
971
972 for (Int_t i = 0; i < nBinsX+1; i++) {
973 Double_t cont = hist->GetBinContent(i);
974 hist->SetBinContent(i,1.-cont);
975 Double_t err = hist->GetBinError(i);
976 hist->SetBinError(i,err);
977 }
978
979return hist;
980}
981
982//_____________________________________________________________________________
bad4ba69 983const AliESDVertex* AlidNdPtHelper::GetTPCVertexZ(AliESDEvent* esdEvent, AlidNdPtEventCuts *evtCuts, AlidNdPtAcceptanceCuts *accCuts, AliESDtrackCuts *trackCuts, Float_t fraction, Int_t ntracksMin){
0aaa8b91 984 //
985 // TPC Z vertexer
986 //
bad4ba69 987 if(!esdEvent)
988 {
989 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
990 return NULL;
991 }
992
993 if(!evtCuts || !accCuts || !trackCuts)
994 {
995 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
996 return NULL;
997 }
998
999 Double_t vtxpos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
1000 Double_t vtxsigma[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
0aaa8b91 1001 AliESDVertex vtx0(vtxpos,vtxsigma);
bad4ba69 1002
1003 Double_t maxDCAr = accCuts->GetMaxDCAr();
1004 Double_t maxDCAz = accCuts->GetMaxDCAz();
1005 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
1006
0aaa8b91 1007 //
1008 Int_t ntracks = esdEvent->GetNumberOfTracks();
1009 TVectorD ztrack(ntracks);
0aaa8b91 1010 Double_t dca[2],cov[3];
1011 Int_t counter=0;
1012 for (Int_t i=0;i <ntracks; i++){
1013 AliESDtrack *t = esdEvent->GetTrack(i);
1014 if (!t) continue;
1015 if (!t->GetTPCInnerParam()) continue;
bad4ba69 1016 if (t->GetTPCNcls()<minTPCClust) continue;
0aaa8b91 1017 //
1018 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
1019 if (!tpcTrack->PropagateToDCA(&vtx0,esdEvent->GetMagneticField(),100.,dca,cov)) continue;
1020
1021 //
bad4ba69 1022 if (TMath::Abs(dca[0])>maxDCAr) continue;
1023 //if (TMath::Sqrt(cov[0])>sigmaXYcut) continue;
1024 if (TMath::Abs(tpcTrack->GetZ())>maxDCAz) continue;
0aaa8b91 1025
0aaa8b91 1026 ztrack[counter]=tpcTrack->GetZ();
1027 counter++;
1028
1029 if(tpcTrack) delete tpcTrack;
1030 }
bad4ba69 1031
0aaa8b91 1032 //
1033 // Find LTM z position
1034 //
1035 Double_t mean=0, sigma=0;
1036 if (counter<ntracksMin) return 0;
1037 //
1038 Int_t nused = TMath::Nint(counter*fraction);
1039 if (nused==counter) nused=counter-1;
1040 if (nused>1){
1041 AliMathBase::EvaluateUni(counter, ztrack.GetMatrixArray(), mean,sigma, TMath::Nint(counter*fraction));
1042 sigma/=TMath::Sqrt(nused);
1043 }else{
1044 mean = TMath::Mean(counter, ztrack.GetMatrixArray());
1045 sigma = TMath::RMS(counter, ztrack.GetMatrixArray());
1046 sigma/=TMath::Sqrt(counter-1);
1047 }
1048 vtxpos[2]=mean;
1049 vtxsigma[2]=sigma;
1050 const AliESDVertex* vertex = new AliESDVertex(vtxpos, vtxsigma);
1051 return vertex;
1052}
1053
1054//_____________________________________________________________________________
1055Int_t AlidNdPtHelper::GetSPDMBTrackMult(AliESDEvent* esdEvent, Float_t deltaThetaCut, Float_t deltaPhiCut)
1056{
1057 //
1058 // SPD track multiplicity
1059 //
1060
1061 // get tracklets
1062 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1063 if (!mult)
1064 return 0;
1065
1066 // get multiplicity from SPD tracklets
1067 Int_t inputCount = 0;
1068 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1069 {
1070 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1071
1072 Float_t phi = mult->GetPhi(i);
1073 if (phi < 0)
1074 phi += TMath::Pi() * 2;
1075 Float_t deltaPhi = mult->GetDeltaPhi(i);
1076 Float_t deltaTheta = mult->GetDeltaTheta(i);
1077
1078 if (TMath::Abs(deltaPhi) > 1)
1079 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1080
1081 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1082 continue;
1083
1084 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1085 continue;
1086
1087 ++inputCount;
1088 }
1089
1090return inputCount;
1091}
1092
1093//_____________________________________________________________________________
1094Int_t AlidNdPtHelper::GetSPDMBPrimTrackMult(AliESDEvent* esdEvent, AliStack* stack, Float_t deltaThetaCut, Float_t deltaPhiCut)
1095{
1096 //
1097 // SPD track multiplicity
1098 //
1099
1100 // get tracklets
1101 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1102 if (!mult)
1103 return 0;
1104
1105 // get multiplicity from SPD tracklets
1106 Int_t inputCount = 0;
1107 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1108 {
1109 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1110
1111 Float_t phi = mult->GetPhi(i);
1112 if (phi < 0)
1113 phi += TMath::Pi() * 2;
1114 Float_t deltaPhi = mult->GetDeltaPhi(i);
1115 Float_t deltaTheta = mult->GetDeltaTheta(i);
1116
1117 if (TMath::Abs(deltaPhi) > 1)
1118 printf("WARNING: Very high Delta Phi: %d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), deltaPhi);
1119
1120 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1121 continue;
1122
1123 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1124 continue;
1125
1126
1127 if (mult->GetLabel(i, 0) < 0 || mult->GetLabel(i, 0) != mult->GetLabel(i, 1) ||
1128 !stack->IsPhysicalPrimary(mult->GetLabel(i, 0)))
1129 continue;
1130
1131
1132 ++inputCount;
1133 }
1134
1135return inputCount;
1136}
1137
1138