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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 **************************************************************************/
f2dec884 15//
16// static dNdPt helper functions
17//
18// basic functionality to select events and tracks
19// for dNdPt analysis
20//
21// Origin: Jan Fiete Grosse-Oetringhaus
22// Modified and Extended: Jacek Otwinowski 19/11/2009
23//
24//
0aaa8b91 25
26#include <TROOT.h>
f2dec884 27#include <TCanvas.h>
28#include <TF1.h>
0aaa8b91 29#include <TH1.h>
30#include <TH2.h>
31#include <TH3.h>
0aaa8b91 32
33#include <AliHeader.h>
34#include <AliStack.h>
35#include <AliLog.h>
0aaa8b91 36#include <AliESD.h>
37#include <AliESDEvent.h>
38#include <AliMCEvent.h>
39#include <AliESDVertex.h>
40#include <AliVertexerTracks.h>
0aaa8b91 41#include <AliMathBase.h>
42#include <AliESDtrackCuts.h>
774986ef 43#include <AliTracker.h>
0aaa8b91 44#include "dNdPt/AlidNdPtEventCuts.h"
45#include "dNdPt/AlidNdPtAcceptanceCuts.h"
46#include "dNdPt/AlidNdPtHelper.h"
47
48//____________________________________________________________________
49ClassImp(AlidNdPtHelper)
50
0aaa8b91 51//____________________________________________________________________
e9f7cb15 52const 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)
0aaa8b91 53{
54 // Get the vertex from the ESD and returns it if the vertex is valid
55 //
56 // Second argument decides which vertex is used (this selects
57 // also the quality criteria that are applied)
58
59 if(!aEsd)
60 {
61 ::Error("AlidNdPtHelper::GetVertex()","esd event is NULL");
62 return NULL;
63 }
64
65 if(!evtCuts || !accCuts || !trackCuts)
66 {
67 ::Error("AlidNdPtHelper::GetVertex()","cuts not available");
68 return NULL;
69 }
70
71 const AliESDVertex* vertex = 0;
72 AliESDVertex *initVertex = 0;
24c88fc4 73 if (analysisMode == kSPD ||
774986ef 74 analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate || analysisMode == kTPCITSHybrid)
0aaa8b91 75 {
76 vertex = aEsd->GetPrimaryVertexSPD();
77 if (debug)
78 Printf("AlidNdPtHelper::GetVertex: Returning SPD vertex");
24c88fc4 79 }
80 else if (analysisMode == kTPCITS || analysisMode == kTPCTrackSPDvtx || analysisMode == kTPCTrackSPDvtxUpdate ||
695facdf 81 analysisMode == kTPCITSHybridTrackSPDvtx || analysisMode == kTPCITSHybridTrackSPDvtxDCArPt ||
82 analysisMode == kITSStandAloneTrackSPDvtx || analysisMode == kITSStandAloneTPCTrackSPDvtx)
791aaf54 83 {
84 vertex = aEsd->GetPrimaryVertexTracks();
85 if(!vertex) return NULL;
86 if(vertex->GetNContributors()<1) {
87 // SPD vertex
88 vertex = aEsd->GetPrimaryVertexSPD();
89 }
90 }
847e74b2 91 else if (analysisMode == kTPC)
0aaa8b91 92 {
93 if(bRedoTPC) {
94
95 Double_t kBz = aEsd->GetMagneticField();
96 AliVertexerTracks vertexer(kBz);
97
98 if(bUseMeanVertex) {
99 Double_t pos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
100 Double_t err[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
0aaa8b91 101 initVertex = new AliESDVertex(pos,err);
102 vertexer.SetVtxStart(initVertex);
103 vertexer.SetConstraintOn();
104 }
105
0aaa8b91 106 Double_t maxDCAr = accCuts->GetMaxDCAr();
107 Double_t maxDCAz = accCuts->GetMaxDCAz();
108 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
109
bad4ba69 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);
0aaa8b91 111 vertexer.SetTPCMode(0.1,1.0,5.0,minTPCClust,1,3.,0.1,2.0,maxDCAr,maxDCAz,1,4);
112
113 // TPC track preselection
114 Int_t ntracks = aEsd->GetNumberOfTracks();
115 TObjArray array(ntracks);
116 UShort_t *id = new UShort_t[ntracks];
117
db7f25fe 118
0aaa8b91 119 Int_t count=0;
120 for (Int_t i=0;i <ntracks; i++) {
121 AliESDtrack *t = aEsd->GetTrack(i);
122 if (!t) continue;
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()));
127 if(tpcTrack) {
128 array.AddLast(tpcTrack);
129 id[count] = (UShort_t)t->GetID();
130 count++;
131 }
132 }
133 AliESDVertex *vTPC = vertexer.VertexForSelectedTracks(&array,id, kTRUE, kTRUE, bUseMeanVertex);
db7f25fe 134 if(!vTPC) {
135 delete [] id; id=NULL;
136 return 0;
137 }
bad4ba69 138
139 // set recreated TPC vertex
0aaa8b91 140 aEsd->SetPrimaryVertexTPC(vTPC);
141
142 for (Int_t i=0; i<aEsd->GetNumberOfTracks(); i++) {
143 AliESDtrack *t = aEsd->GetTrack(i);
774986ef 144 if(!t) continue;
145
146 Double_t x[3]; t->GetXYZ(x);
147 Double_t b[3]; AliTracker::GetBxByBz(x,b);
148 t->RelateToVertexTPCBxByBz(vTPC, b, kVeryBig);
0aaa8b91 149 }
150
151 delete vTPC;
152 array.Delete();
153 delete [] id; id=NULL;
154
155 }
156 vertex = aEsd->GetPrimaryVertexTPC();
157 if (debug)
774986ef 158 Printf("AlidNdPtHelper::GetVertex: Returning vertex from tracks");
159 }
160 else
161 Printf("AlidNdPtHelper::GetVertex: ERROR: Invalid second argument %d", analysisMode);
0aaa8b91 162
163 if (!vertex) {
164 if (debug)
165 Printf("AlidNdPtHelper::GetVertex: No vertex found in ESD");
166 return 0;
167 }
168
169 if (debug)
170 {
171 Printf("AlidNdPtHelper::GetVertex: Returning valid vertex: %s", vertex->GetTitle());
172 vertex->Print();
173 }
174
175 if(initVertex) delete initVertex; initVertex=NULL;
176 return vertex;
177}
178
bad4ba69 179//____________________________________________________________________
791aaf54 180Bool_t AlidNdPtHelper::TestRecVertex(const AliESDVertex* vertex, const AliESDVertex* vertexSPD, AnalysisMode analysisMode, Bool_t debug)
bad4ba69 181{
182 // Checks if a vertex meets the needed quality criteria
183 if(!vertex) return kFALSE;
774986ef 184 if(!vertex->GetStatus()) return kFALSE;
bad4ba69 185
186 Float_t requiredZResolution = -1;
774986ef 187 if (analysisMode == kSPD || analysisMode == kTPCITS ||
791aaf54 188 analysisMode == kTPCSPDvtx || analysisMode == kTPCSPDvtxUpdate || analysisMode == kTPCITSHybrid ||
189 analysisMode == kTPCTrackSPDvtx || analysisMode == kTPCTrackSPDvtxUpdate || analysisMode == kTPCITSHybridTrackSPDvtx || analysisMode == kTPCITSHybridTrackSPDvtxDCArPt
695facdf 190 || analysisMode == kITSStandAloneTrackSPDvtx || analysisMode == kITSStandAloneTPCTrackSPDvtx)
bad4ba69 191 {
774986ef 192 requiredZResolution = 1000;
bad4ba69 193 }
847e74b2 194 else if (analysisMode == kTPC)
bad4ba69 195 requiredZResolution = 10.;
196
774986ef 197 // check resolution
198 Double_t zRes = vertex->GetZRes();
199
200 if (zRes > requiredZResolution) {
201 if (debug)
202 Printf("AlidNdPtHelper::TestVertex: Resolution too poor %f (required: %f", zRes, requiredZResolution);
203 return kFALSE;
204 }
791aaf54 205
206 // always check for SPD vertex
207 if(!vertexSPD) return kFALSE;
208 if(!vertexSPD->GetStatus()) return kFALSE;
209 if (vertexSPD->IsFromVertexerZ())
774986ef 210 {
791aaf54 211 if (vertexSPD->GetDispersion() > 0.02)
774986ef 212 {
213 if (debug)
214 Printf("AliPWG0Helper::TestVertex: Delta Phi too large in Vertexer Z: %f (required: %f", vertex->GetDispersion(), 0.02);
215 return kFALSE;
216 }
217 }
218
bad4ba69 219
220 return kTRUE;
221}
222
791aaf54 223//____________________________________________________________________
e9f7cb15 224Bool_t AlidNdPtHelper::IsGoodImpPar(const AliESDtrack *const track)
791aaf54 225{
226//
227// check whether particle has good DCAr(Pt) impact
228// parameter. Only for TPC+ITS tracks (7*sigma cut)
229// Origin: Andrea Dainese
230//
231
232Float_t d0z0[2],covd0z0[3];
233track->GetImpactParameters(d0z0,covd0z0);
234Float_t sigma= 0.0050+0.0060/TMath::Power(track->Pt(),0.9);
235Float_t d0max = 7.*sigma;
236if(TMath::Abs(d0z0[0]) < d0max) return kTRUE;
237
238return kFALSE;
239}
240
0aaa8b91 241//____________________________________________________________________
f2dec884 242Bool_t AlidNdPtHelper::IsPrimaryParticle(AliStack* const stack, Int_t idx, ParticleMode particleMode)
0aaa8b91 243{
774986ef 244//
0aaa8b91 245// check primary particles
847e74b2 246// depending on the particle mode
0aaa8b91 247//
248 if(!stack) return kFALSE;
249
250 TParticle* particle = stack->Particle(idx);
251 if (!particle) return kFALSE;
252
253 // only charged particles
254 Double_t charge = particle->GetPDG()->Charge()/3.;
f2dec884 255 if (TMath::Abs(charge) < 0.001) return kFALSE;
0aaa8b91 256
257 Int_t pdg = TMath::Abs(particle->GetPdgCode());
258
259 // physical primary
260 Bool_t prim = stack->IsPhysicalPrimary(idx);
261
847e74b2 262 if(particleMode==kMCPion) {
0aaa8b91 263 if(prim && pdg==kPiPlus) return kTRUE;
264 else return kFALSE;
265 }
266
847e74b2 267 if (particleMode==kMCKaon) {
0aaa8b91 268 if(prim && pdg==kKPlus) return kTRUE;
269 else return kFALSE;
270 }
271
847e74b2 272 if (particleMode==kMCProton) {
0aaa8b91 273 if(prim && pdg==kProton) return kTRUE;
274 else return kFALSE;
275 }
276
17e8c701 277 if(particleMode==kMCRest) {
278 if(prim && pdg!=kPiPlus && pdg!=kKPlus && pdg!=kProton) return kTRUE;
279 else return kFALSE;
280 }
281
0aaa8b91 282return prim;
283}
284
d269b0e6 285//____________________________________________________________________
f2dec884 286Bool_t AlidNdPtHelper::IsCosmicTrack(AliESDtrack *const track1, AliESDtrack *const track2)
d269b0e6 287{
288//
289// check cosmic tracks
290//
291 if(!track1) return kFALSE;
292 if(!track2) return kFALSE;
d269b0e6 293
774986ef 294 //
295 // cosmic tracks in TPC
296 //
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)
301
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
310 )
d269b0e6 311 {
774986ef 312 printf("COSMIC candidate \n");
d269b0e6 313
774986ef 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()));
318 return kTRUE;
319 }
847e74b2 320
321return kFALSE;
322}
323
0aaa8b91 324//____________________________________________________________________
70fdd197 325void AlidNdPtHelper::PrintConf(AnalysisMode analysisMode, AliTriggerAnalysis::Trigger trigger)
0aaa8b91 326{
327 //
328 // Prints the given configuration
329 //
330
331 TString str(">>>> Running with ");
332
333 switch (analysisMode)
334 {
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;
847e74b2 340 case kTPCSPDvtxUpdate : str += "TPC tracks updated with SPD event vertex point"; break;
791aaf54 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;
774986ef 343 case kTPCITSHybrid : str += "TPC tracking + ITS refit + >1 SPD cluster"; break;
791aaf54 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;
695facdf 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;
0aaa8b91 348 case kMCRec : str += "TPC tracking + Replace rec. with MC values"; break;
0aaa8b91 349 }
350 str += " and trigger ";
351
70fdd197 352 str += AliTriggerAnalysis::GetTriggerName(trigger);
0aaa8b91 353
354 str += " <<<<";
355
356 Printf("%s", str.Data());
357}
358
359//____________________________________________________________________
e9f7cb15 360Int_t AlidNdPtHelper::ConvertPdgToPid(const TParticle *const particle) {
0aaa8b91 361//
362// Convert Abs(pdg) to pid
363// (0 - e, 1 - muons, 2 - pions, 3 - kaons, 4 - protons, 5 -all rest)
364//
365Int_t pid=-1;
366
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; }
372 else { pid = 5; }
373
374return pid;
375}
376
377//_____________________________________________________________________________
f2dec884 378TH1F* AlidNdPtHelper::CreateResHisto(TH2F* const hRes2, TH1F **phMean, Int_t integ, Bool_t drawBinFits, Int_t minHistEntries)
0aaa8b91 379{
bad4ba69 380//
381// Create mean and resolution
382// histograms
383//
0aaa8b91 384 TVirtualPad* currentPad = gPad;
385 TAxis* axis = hRes2->GetXaxis();
386 Int_t nBins = axis->GetNbins();
62e3b4b6 387 //Bool_t overflowBinFits = kFALSE;
0aaa8b91 388 TH1F* hRes, *hMean;
389 if (axis->GetXbins()->GetSize()){
390 hRes = new TH1F("hRes", "", nBins, axis->GetXbins()->GetArray());
391 hMean = new TH1F("hMean", "", nBins, axis->GetXbins()->GetArray());
392 }
393 else{
394 hRes = new TH1F("hRes", "", nBins, axis->GetXmin(), axis->GetXmax());
395 hMean = new TH1F("hMean", "", nBins, axis->GetXmin(), axis->GetXmax());
396
397 }
398 hRes->SetStats(false);
399 hRes->SetOption("E");
400 hRes->SetMinimum(0.);
401 //
402 hMean->SetStats(false);
403 hMean->SetOption("E");
404
405 // create the fit function
406 TF1 * fitFunc = new TF1("G","[0]*exp(-(x-[1])*(x-[1])/(2.*[2]*[2]))",-3,3);
407
408 fitFunc->SetLineWidth(2);
409 fitFunc->SetFillStyle(0);
410 // create canvas for fits
411 TCanvas* canBinFits = NULL;
62e3b4b6 412 //Int_t nPads = (overflowBinFits) ? nBins+2 : nBins;
413 Int_t nPads = nBins;
0aaa8b91 414 Int_t nx = Int_t(sqrt(nPads-1.));// + 1;
415 Int_t ny = (nPads-1) / nx + 1;
416 if (drawBinFits) {
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);
421 }
422
423 // loop over x bins and fit projection
62e3b4b6 424 //Int_t dBin = ((overflowBinFits) ? 1 : 0);
425 Int_t dBin = 0;
0aaa8b91 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);
431 //
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));
436
437 if (sigma > 0.){
438 hRes->SetBinContent(bin, TMath::Abs(fitFunc->GetParameter(2)));
439 hMean->SetBinContent(bin, fitFunc->GetParameter(1));
440 }
441 else{
442 hRes->SetBinContent(bin, 0.);
443 hMean->SetBinContent(bin,0);
444 }
445 hRes->SetBinError(bin, fitFunc->GetParError(2));
446 hMean->SetBinError(bin, fitFunc->GetParError(1));
447
448 //
449 //
450
451 } else {
452 hRes->SetBinContent(bin, 0.);
453 hRes->SetBinError(bin, 0.);
454 hMean->SetBinContent(bin, 0.);
455 hMean->SetBinError(bin, 0.);
456 }
457
458
459 if (drawBinFits) {
460 char name[256];
461 if (bin == 0) {
b4cdc39d 462 snprintf(name,256, "%s < %.4g", axis->GetTitle(), axis->GetBinUpEdge(bin));
0aaa8b91 463 } else if (bin == nBins+1) {
b4cdc39d 464 snprintf(name,256, "%.4g < %s", axis->GetBinLowEdge(bin), axis->GetTitle());
0aaa8b91 465 } else {
b4cdc39d 466 snprintf(name,256, "%.4g < %s < %.4g", axis->GetBinLowEdge(bin),
0aaa8b91 467 axis->GetTitle(), axis->GetBinUpEdge(bin));
468 }
469 canBinFits->cd(bin + dBin);
470 hBin->SetTitle(name);
471 hBin->SetStats(kTRUE);
472 hBin->DrawCopy("E");
473 canBinFits->Update();
474 canBinFits->Modified();
475 canBinFits->Update();
476 }
477
478 delete hBin;
479 }
480
481 delete fitFunc;
482 currentPad->cd();
483 *phMean = hMean;
484 return hRes;
485}
486
487//_____________________________________________________________________________
488TH1F* AlidNdPtHelper::MakeResol(TH2F * his, Int_t integ, Bool_t type, Bool_t drawBins, Int_t minHistEntries){
489// Create resolution histograms
490
491 TH1F *hisr=0, *hism=0;
492 if (!gPad) new TCanvas;
0aaa8b91 493 hisr = CreateResHisto(his,&hism,integ,drawBins,minHistEntries);
494 if (type) return hism;
495 else return hisr;
496
497return hisr;
498}
499
500//_____________________________________________________________________________
bad4ba69 501TObjArray* AlidNdPtHelper::GetAllChargedTracks(AliESDEvent *esdEvent, AnalysisMode analysisMode)
0aaa8b91 502{
503 //
504 // all charged TPC particles
505 //
506 TObjArray *allTracks = new TObjArray();
507 if(!allTracks) return allTracks;
508
509 AliESDtrack *track=0;
510 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
511 {
847e74b2 512 if(analysisMode == AlidNdPtHelper::kTPC) {
774986ef 513 //
847e74b2 514 // track must be deleted by user
774986ef 515 // esd track parameters are replaced by TPCinner
516 //
bad4ba69 517 track = AliESDtrackCuts::GetTPCOnlyTrack(esdEvent,iTrack);
847e74b2 518 if(!track) continue;
519 }
774986ef 520 else if (analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate)
847e74b2 521 {
774986ef 522 //
847e74b2 523 // track must be deleted by the user
774986ef 524 // esd track parameters are replaced by TPCinner
525 //
847e74b2 526 track = AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(esdEvent,iTrack,kFALSE);
527 if(!track) continue;
528 }
791aaf54 529 else if (analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
530 {
531 //
532 // track must be deleted by the user
533 // esd track parameters are replaced by TPCinner
534 //
535 track = AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
536 if(!track) continue;
537 }
695facdf 538 else if(analysisMode == AlidNdPtHelper::kTPCITSHybrid )
774986ef 539 {
540 track = AlidNdPtHelper::GetTrackSPDvtx(esdEvent,iTrack,kFALSE);
541 }
68f10917 542 else if(analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtx || analysisMode == AlidNdPtHelper::kTPCITSHybridTrackSPDvtxDCArPt || analysisMode == AlidNdPtHelper::kITSStandAloneTrackSPDvtx || analysisMode ==AlidNdPtHelper::kITSStandAloneTPCTrackSPDvtx)
791aaf54 543 {
544 track = AlidNdPtHelper::GetTrackTrackSPDvtx(esdEvent,iTrack,kFALSE);
545 }
774986ef 546 else
547 {
548 track = esdEvent->GetTrack(iTrack);
0aaa8b91 549 }
774986ef 550
0aaa8b91 551 if(!track) continue;
552
553 if(track->Charge()==0) {
791aaf54 554 if(analysisMode == AlidNdPtHelper::kTPC ||
555 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
556 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate)
847e74b2 557 {
0aaa8b91 558 delete track; continue;
559 } else {
560 continue;
561 }
562 }
563
564 allTracks->Add(track);
565 }
bad4ba69 566
791aaf54 567 if(analysisMode == AlidNdPtHelper::kTPC ||
568 analysisMode == AlidNdPtHelper::kTPCSPDvtx || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtx ||
569 analysisMode == AlidNdPtHelper::kTPCSPDvtxUpdate || analysisMode == AlidNdPtHelper::kTPCTrackSPDvtxUpdate) {
bad4ba69 570
571 allTracks->SetOwner(kTRUE);
572 }
0aaa8b91 573
574return allTracks;
575}
576
847e74b2 577//_____________________________________________________________________________
e9f7cb15 578AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
847e74b2 579{
580//
581// Create ESD tracks from TPCinner parameters.
582// Propagte to DCA to SPD vertex.
583// Update using SPD vertex point (parameter)
584//
585// It is user responsibility to delete these tracks
586//
587
588 if (!esdEvent) return NULL;
589 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
590 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
591
592 //
593 AliESDtrack* track = esdEvent->GetTrack(iTrack);
594 if (!track)
595 return NULL;
596
774986ef 597 Bool_t isOK = kFALSE;
598 Double_t x[3]; track->GetXYZ(x);
599 Double_t b[3]; AliTracker::GetBxByBz(x,b);
600
847e74b2 601 // create new ESD track
602 AliESDtrack *tpcTrack = new AliESDtrack();
603
604 // relate TPC-only tracks (TPCinner) to SPD vertex
605 AliExternalTrackParam cParam;
606 if(bUpdate) {
774986ef 607 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
847e74b2 608 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
609
610 // reject fake tracks
611 if(track->Pt() > 10000.) {
612 ::Error("Exclude no physical tracks","pt>10000. GeV");
613 delete tpcTrack;
614 return NULL;
615 }
616 }
617 else {
774986ef 618 isOK = track->RelateToVertexTPCBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
847e74b2 619 }
620
621 // only true if we have a tpc track
622 if (!track->FillTPCOnlyTrack(*tpcTrack))
623 {
624 delete tpcTrack;
625 return NULL;
626 }
774986ef 627
628 if(!isOK) return NULL;
847e74b2 629
630return tpcTrack;
631}
632
791aaf54 633//_____________________________________________________________________________
e9f7cb15 634AliESDtrack *AlidNdPtHelper::GetTPCOnlyTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
791aaf54 635{
636//
637// Create ESD tracks from TPCinner parameters.
638// Propagte to DCA to Track or SPD vertex.
639// Update using SPD vertex point (parameter)
640//
641// It is user responsibility to delete these tracks
642//
643 if (!esdEvent) return NULL;
644 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
645 if(vertex->GetNContributors()<1) {
646 // SPD vertex
647 vertex = esdEvent->GetPrimaryVertexSPD();
648 }
649 if(!vertex) return NULL;
650
651 //
652 AliESDtrack* track = esdEvent->GetTrack(iTrack);
653 if (!track)
654 return NULL;
655
656 Bool_t isOK = kFALSE;
657 Double_t x[3]; track->GetXYZ(x);
658 Double_t b[3]; AliTracker::GetBxByBz(x,b);
659
660 // create new ESD track
661 AliESDtrack *tpcTrack = new AliESDtrack();
662
663 // relate TPC-only tracks (TPCinner) to SPD vertex
664 AliExternalTrackParam cParam;
665 if(bUpdate) {
666 isOK = track->RelateToVertexTPCBxByBz(vertex,b,kVeryBig,&cParam);
667 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
668
669 // reject fake tracks
670 if(track->Pt() > 10000.) {
671 ::Error("Exclude no physical tracks","pt>10000. GeV");
672 delete tpcTrack;
673 return NULL;
674 }
675 }
676 else {
677 isOK = track->RelateToVertexTPCBxByBz(vertex, b, kVeryBig);
678 }
679
680 // only true if we have a tpc track
681 if (!track->FillTPCOnlyTrack(*tpcTrack))
682 {
683 delete tpcTrack;
684 return NULL;
685 }
686
687 if(!isOK) return NULL;
688
689return tpcTrack;
690}
691
774986ef 692//_____________________________________________________________________________
e9f7cb15 693AliESDtrack *AlidNdPtHelper::GetTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
774986ef 694{
695//
696// Propagte track to DCA to SPD vertex.
697// Update using SPD vertex point (parameter)
698//
699 if (!esdEvent) return NULL;
700 if (!esdEvent->GetPrimaryVertexSPD() ) { return NULL; }
701 if (!esdEvent->GetPrimaryVertexSPD()->GetStatus() ) { return NULL; }
702
703 //
704 AliESDtrack* track = esdEvent->GetTrack(iTrack);
705 if (!track)
706 return NULL;
707
708 Bool_t isOK = kFALSE;
709 Double_t x[3]; track->GetXYZ(x);
710 Double_t b[3]; AliTracker::GetBxByBz(x,b);
711
712 // relate tracks to SPD vertex
713 AliExternalTrackParam cParam;
714 if(bUpdate) {
715 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(),b,kVeryBig,&cParam);
716 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
717
718 // reject fake tracks
719 if(track->Pt() > 10000.) {
720 ::Error("Exclude no physical tracks","pt>10000. GeV");
721 return NULL;
722 }
723 }
724 else {
725 isOK = track->RelateToVertexBxByBz(esdEvent->GetPrimaryVertexSPD(), b, kVeryBig);
726 }
727
728 if(!isOK) return NULL;
729
730return track;
731}
732
791aaf54 733//_____________________________________________________________________________
e9f7cb15 734AliESDtrack *AlidNdPtHelper::GetTrackTrackSPDvtx(const AliESDEvent* esdEvent, Int_t iTrack, Bool_t bUpdate)
791aaf54 735{
736//
737// Propagte track to DCA to Track or SPD vertex.
738// Update using SPD vertex point (parameter)
739//
740 if (!esdEvent) return NULL;
741
742 const AliESDVertex *vertex = esdEvent->GetPrimaryVertexTracks();
743 if(vertex->GetNContributors()<1) {
744 // SPD vertex
745 vertex = esdEvent->GetPrimaryVertexSPD();
746 }
747 if(!vertex) return NULL;
748
749 //
750 AliESDtrack* track = esdEvent->GetTrack(iTrack);
751 if (!track)
752 return NULL;
753
754 Bool_t isOK = kFALSE;
755 Double_t x[3]; track->GetXYZ(x);
756 Double_t b[3]; AliTracker::GetBxByBz(x,b);
757
758 // relate tracks to SPD vertex
759 AliExternalTrackParam cParam;
760 if(bUpdate) {
761 isOK = track->RelateToVertexBxByBz(vertex,b,kVeryBig,&cParam);
762 track->Set(cParam.GetX(),cParam.GetAlpha(),cParam.GetParameter(),cParam.GetCovariance());
763
764 // reject fake tracks
765 if(track->Pt() > 10000.) {
766 ::Error("Exclude no physical tracks","pt>10000. GeV");
767 return NULL;
768 }
769 }
770 else {
771 isOK = track->RelateToVertexBxByBz(vertex, b, kVeryBig);
772 }
773
774 if(!isOK) return NULL;
775
776return track;
777}
778
55468faf 779//_____________________________________________________________________________
780Bool_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
784
785if(!esdEvent) return kFALSE;
786if(!esdTrackCuts) return kFALSE;
787
788 AliESDtrack *track=0;
789 Int_t count = 0;
790 for (Int_t iTrack = 0; iTrack < esdEvent->GetNumberOfTracks(); iTrack++)
791 {
792 track = esdEvent->GetTrack(iTrack);
793 if(!track) continue;
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;
798
799 count++;
800 }
801
802 if(count > 0) return kTRUE;
803 else return kFALSE;
804
805return kFALSE;
806}
807
808//_____________________________________________________________________________
809Bool_t AlidNdPtHelper::SelectMCEvent(AliMCEvent* const mcEvent) {
810//
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
814//
815
816if(!mcEvent) return kFALSE;
817AliStack* stack = mcEvent->Stack();
818if(!stack) return kFALSE;
819
820 Int_t count = 0;
821 for (Int_t iMc = 0; iMc < stack->GetNtrack(); ++iMc)
822 {
823 TParticle* particle = stack->Particle(iMc);
824 if (!particle) continue;
825
826 // only charged particles
827 if(!particle->GetPDG()) continue;
828 Double_t charge = particle->GetPDG()->Charge()/3.;
829 if(charge == 0) continue;
830
831 // physical primary
832 Bool_t prim = stack->IsPhysicalPrimary(iMc);
833 if(!prim) continue;
834
835 if(particle->Pt() < 0.5) continue;
836 if(TMath::Abs(particle->Eta()) > 0.8) continue;
837
838 count++;
839 }
840
841 if(count > 0) return kTRUE;
842 else return kFALSE;
843
844return kFALSE;
845}
846
0aaa8b91 847//_____________________________________________________________________________
e9f7cb15 848Int_t AlidNdPtHelper::GetTPCMBTrackMult(const AliESDEvent *const esdEvent,const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts,const AliESDtrackCuts *const trackCuts)
0aaa8b91 849{
850 //
851 // get MB event track multiplicity
852 //
853 if(!esdEvent)
854 {
855 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","esd event is NULL");
856 return 0;
857 }
858
859 if(!evtCuts || !accCuts || !trackCuts)
860 {
861 ::Error("AlidNdPtHelper::GetTPCMBTrackMult()","cuts not available");
862 return 0;
863 }
864
865 //
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);
869
870 //
871 Float_t maxDCAr = accCuts->GetMaxDCAr();
872 Float_t maxDCAz = accCuts->GetMaxDCAz();
873 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
874 //
875 Int_t ntracks = esdEvent->GetNumberOfTracks();
876 Double_t dca[2],cov[3];
877 Int_t mult=0;
878 for (Int_t i=0;i <ntracks; i++){
879 AliESDtrack *t = esdEvent->GetTrack(i);
880 if (!t) continue;
881 if (t->Charge() == 0) continue;
882 if (!t->GetTPCInnerParam()) continue;
883 if (t->GetTPCNcls()<minTPCClust) continue;
884 //
774986ef 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
888
0aaa8b91 889 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
b4cdc39d 890 if(!tpcTrack) return 0;
891
774986ef 892 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
0aaa8b91 893 {
894 if(tpcTrack) delete tpcTrack;
895 continue;
896 }
897 //
898 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
899 if(tpcTrack) delete tpcTrack;
900 continue;
901 }
902
903 mult++;
904
905 if(tpcTrack) delete tpcTrack;
906 }
907
908return mult;
909}
910
911//_____________________________________________________________________________
e9f7cb15 912Int_t AlidNdPtHelper::GetTPCMBPrimTrackMult(const AliESDEvent *const esdEvent, AliStack *const stack, const AlidNdPtEventCuts *const evtCuts, const AlidNdPtAcceptanceCuts *const accCuts, const AliESDtrackCuts *const trackCuts)
0aaa8b91 913{
914 //
915 // get MB primary event track multiplicity
916 //
917 if(!esdEvent)
918 {
919 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
920 return 0;
921 }
922
923 if(!stack)
924 {
925 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","esd event is NULL");
926 return 0;
927 }
928
929 if(!evtCuts || !accCuts || !trackCuts)
930 {
931 ::Error("AlidNdPtHelper::GetTPCMBPrimTrackMult()","cuts not available");
932 return 0;
933 }
934
935 //
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);
939
940 //
941 Float_t maxDCAr = accCuts->GetMaxDCAr();
942 Float_t maxDCAz = accCuts->GetMaxDCAz();
943 Float_t minTPCClust = trackCuts->GetMinNClusterTPC();
944
945 //
946 Int_t ntracks = esdEvent->GetNumberOfTracks();
947 Double_t dca[2],cov[3];
948 Int_t mult=0;
949 for (Int_t i=0;i <ntracks; i++){
950 AliESDtrack *t = esdEvent->GetTrack(i);
951 if (!t) continue;
952 if (t->Charge() == 0) continue;
953 if (!t->GetTPCInnerParam()) continue;
954 if (t->GetTPCNcls()<minTPCClust) continue;
955 //
774986ef 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
959
0aaa8b91 960 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
b4cdc39d 961 if(!tpcTrack) return 0;
962
774986ef 963 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov))
0aaa8b91 964 {
965 if(tpcTrack) delete tpcTrack;
966 continue;
967 }
968 //
969 if (TMath::Abs(dca[0])>maxDCAr || TMath::Abs(dca[1])>maxDCAz) {
970 if(tpcTrack) delete tpcTrack;
971 continue;
972 }
973
974 Int_t label = TMath::Abs(t->GetLabel());
975 TParticle *part = stack->Particle(label);
976 if(!part) {
977 if(tpcTrack) delete tpcTrack;
978 continue;
979 }
980 if(!stack->IsPhysicalPrimary(label))
981 {
982 if(tpcTrack) delete tpcTrack;
983 continue;
984 }
985
986 mult++;
987
988 if(tpcTrack) delete tpcTrack;
989 }
990
991return mult;
992}
993
994
791aaf54 995//_____________________________________________________________________________
996Double_t AlidNdPtHelper::GetStrangenessCorrFactor(const Double_t pt)
997{
998// data driven correction factor for secondaries
999// underestimated secondaries with strangeness in Pythia (A. Dainese)
0aaa8b91 1000
791aaf54 1001//
1002// pt=0.17; fact=1
1003// pt=0.4; fact=1.07
1004// pt=0.6; fact=1.25
1005// pt>=1.2; fact=1.5
1006//
0aaa8b91 1007
791aaf54 1008if (pt <= 0.17) return 1.0;
1009if (pt <= 0.4) return GetLinearInterpolationValue(0.17,1.0,0.4,1.07, pt);
1010if (pt <= 0.6) return GetLinearInterpolationValue(0.4,1.07,0.6,1.25, pt);
1011if (pt <= 1.2) return GetLinearInterpolationValue(0.6,1.25,1.2,1.5, pt);
1012return 1.5;
1013
1014}
1015
d4640855 1016//_____________________________________________________________________________
1017Double_t AlidNdPtHelper::GetStrangenessCorrFactorPbPb(const Double_t pt)
1018{
1019// data driven correction factor for secondaries (PbPb)
1020
1021if (pt <= 0.25) return 1.0;
1022if (pt <= 0.5) return GetLinearInterpolationValue(0.25,1.0,0.5,1.4, pt);
1023if (pt <= 1.0) return GetLinearInterpolationValue(0.5,1.4,1.0,1.47, pt);
1024if (pt <= 2.0) return GetLinearInterpolationValue(1.0,1.47,2.0,1.56, pt);
1025if (pt <= 5.0) return GetLinearInterpolationValue(2.0,1.56,5.0,1.67, pt);
1026return 1.67;
1027
1028}
1029
791aaf54 1030//___________________________________________________________________________
e9f7cb15 1031Double_t AlidNdPtHelper::GetLinearInterpolationValue(const Double_t x1,const Double_t y1,const Double_t x2,const Double_t y2, const Double_t pt)
791aaf54 1032{
1033//
1034// linear interpolation
1035//
1036 return ((y2-y1)/(x2-x1))*pt+(y2-(((y2-y1)/(x2-x1))*x2));
1037}
0aaa8b91 1038
1039//_____________________________________________________________________________
f2dec884 1040Int_t AlidNdPtHelper::GetMCTrueTrackMult(AliMCEvent *const mcEvent, AlidNdPtEventCuts *const evtCuts, AlidNdPtAcceptanceCuts *const accCuts)
0aaa8b91 1041{
1042 //
1043 // calculate mc event true track multiplicity
1044 //
1045 if(!mcEvent) return 0;
1046
1047 AliStack* stack = 0;
1048 Int_t mult = 0;
1049
1050 // MC particle stack
1051 stack = mcEvent->Stack();
1052 if (!stack) return 0;
1053
695facdf 1054 //
1055 //printf("minZv %f, maxZv %f \n", evtCuts->GetMinZv(), evtCuts->GetMaxZv());
1056 //
1057
0aaa8b91 1058 Bool_t isEventOK = evtCuts->AcceptMCEvent(mcEvent);
1059 if(!isEventOK) return 0;
1060
1061 Int_t nPart = stack->GetNtrack();
1062 for (Int_t iMc = 0; iMc < nPart; ++iMc)
1063 {
1064 TParticle* particle = stack->Particle(iMc);
1065 if (!particle)
1066 continue;
1067
1068 // only charged particles
09abaebb 1069 if(!particle->GetPDG()) continue;
0aaa8b91 1070 Double_t charge = particle->GetPDG()->Charge()/3.;
f2dec884 1071 if (TMath::Abs(charge) < 0.001)
0aaa8b91 1072 continue;
1073
1074 // physical primary
1075 Bool_t prim = stack->IsPhysicalPrimary(iMc);
1076 if(!prim) continue;
1077
774986ef 1078 // checked accepted without pt cut
1079 //if(accCuts->AcceptTrack(particle))
1080 if( particle->Eta() > accCuts->GetMinEta() && particle->Eta() < accCuts->GetMaxEta() )
0aaa8b91 1081 {
1082 mult++;
1083 }
1084 }
1085
1086return mult;
1087}
1088
1089//_______________________________________________________________________
f2dec884 1090void AlidNdPtHelper::PrintMCInfo(AliStack *const pStack,Int_t label)
0aaa8b91 1091{
1092// print information about particles in the stack
1093
1094 if(!pStack)return;
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());
1099 part->Print();
1100 TParticle* mother = part;
1101 Int_t imo = part->GetFirstMother();
1102 Int_t nprim = pStack->GetNprimary();
1103
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());
1107 mother->Print();
1108 imo = mother->GetFirstMother();
1109 }
1110
1111 Printf("########################");
1112}
1113
1114
1115//_____________________________________________________________________________
f2dec884 1116TH1* AlidNdPtHelper::GetContCorrHisto(TH1 *const hist)
0aaa8b91 1117{
1118//
1119// get contamination histogram
1120//
1121 if(!hist) return 0;
1122
1123 Int_t nbins = hist->GetNbinsX();
f2dec884 1124 TH1 *hCont = (TH1D *)hist->Clone();
0aaa8b91 1125
1126 for(Int_t i=0; i<=nbins+1; i++) {
1127 Double_t binContent = hist->GetBinContent(i);
1128 Double_t binError = hist->GetBinError(i);
1129
f2dec884 1130 hCont->SetBinContent(i,1.-binContent);
1131 hCont->SetBinError(i,binError);
0aaa8b91 1132 }
1133
f2dec884 1134return hCont;
0aaa8b91 1135}
1136
1137
1138//_____________________________________________________________________________
f2dec884 1139TH1* AlidNdPtHelper::ScaleByBinWidth(TH1 *const hist)
0aaa8b91 1140{
1141//
1142// scale by bin width
1143//
1144 if(!hist) return 0;
1145
f2dec884 1146 TH1 *hScale = (TH1D *)hist->Clone();
1147 hScale->Scale(1.,"width");
0aaa8b91 1148
f2dec884 1149return hScale;
0aaa8b91 1150}
1151
1152//_____________________________________________________________________________
e9f7cb15 1153TH1* AlidNdPtHelper::CalcRelativeDifference(const TH1 *const hist1, const TH1 *const hist2)
0aaa8b91 1154{
1155//
1156// calculate rel. difference
1157//
1158
1159 if(!hist1) return 0;
1160 if(!hist2) return 0;
1161
f2dec884 1162 TH1 *h1Clone = (TH1D *)hist1->Clone();
1163 h1Clone->Sumw2();
0aaa8b91 1164
1165 // (rec-mc)/mc
f2dec884 1166 h1Clone->Add(hist2,-1);
1167 h1Clone->Divide(hist2);
0aaa8b91 1168
f2dec884 1169return h1Clone;
0aaa8b91 1170}
1171
1172//_____________________________________________________________________________
e9f7cb15 1173TH1* AlidNdPtHelper::CalcRelativeDifferenceFun(const TH1 *const hist1, TF1 *const fun)
0aaa8b91 1174{
1175//
08a80bfe 1176// calculate rel. difference
0aaa8b91 1177// between histogram and function
1178//
1179 if(!hist1) return 0;
1180 if(!fun) return 0;
1181
f2dec884 1182 TH1 *h1Clone = (TH1D *)hist1->Clone();
1183 h1Clone->Sumw2();
0aaa8b91 1184
1185 //
f2dec884 1186 h1Clone->Add(fun,-1);
1187 h1Clone->Divide(hist1);
0aaa8b91 1188
f2dec884 1189return h1Clone;
0aaa8b91 1190}
1191
1192//_____________________________________________________________________________
e9f7cb15 1193TH1* AlidNdPtHelper::NormalizeToEvent(const TH2 *const hist1, const TH1 *const hist2)
0aaa8b91 1194{
1195// normalise to event for a given multiplicity bin
1196// return pt histogram
1197
1198 if(!hist1) return 0;
1199 if(!hist2) return 0;
1200 char name[256];
1201
1202 Int_t nbinsX = hist1->GetNbinsX();
1203 //Int_t nbinsY = hist1->GetNbinsY();
1204
f2dec884 1205 TH1D *histNorm = 0;
0aaa8b91 1206 for(Int_t i=0; i<=nbinsX+1; i++) {
b4cdc39d 1207 snprintf(name,256,"mom_%d",i);
0aaa8b91 1208 TH1D *hist = (TH1D*)hist1->ProjectionY(name,i+1,i+1);
1209
b4cdc39d 1210 snprintf(name,256,"mom_norm");
0aaa8b91 1211 if(i==0) {
f2dec884 1212 histNorm = (TH1D *)hist->Clone(name);
1213 histNorm->Reset();
0aaa8b91 1214 }
1215
1216 Double_t nbEvents = hist2->GetBinContent(i);
1217 if(!nbEvents) { nbEvents = 1.; };
1218
1219 hist->Scale(1./nbEvents);
f2dec884 1220 histNorm->Add(hist);
0aaa8b91 1221 }
1222
f2dec884 1223return histNorm;
0aaa8b91 1224}
1225
1226//_____________________________________________________________________________
e9f7cb15 1227//THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, char *const name) {
1228THnSparse* AlidNdPtHelper::GenerateCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char *name) {
0aaa8b91 1229// generate correction matrix
1230if(!hist1 || !hist2) return 0;
1231
1232THnSparse *h =(THnSparse*)hist1->Clone(name);;
1233h->Divide(hist1,hist2,1,1,"B");
1234
1235return h;
1236}
1237
1238//_____________________________________________________________________________
a9b12ce1 1239//TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1240TH2* AlidNdPtHelper::GenerateCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char *name) {
0aaa8b91 1241// generate correction matrix
1242if(!hist1 || !hist2) return 0;
1243
1244TH2D *h =(TH2D*)hist1->Clone(name);;
1245h->Divide(hist1,hist2,1,1,"B");
1246
1247return h;
1248}
1249
1250//_____________________________________________________________________________
a9b12ce1 1251//TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1252TH1* AlidNdPtHelper::GenerateCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
0aaa8b91 1253// generate correction matrix
1254if(!hist1 || !hist2) return 0;
1255
1256TH1D *h =(TH1D*)hist1->Clone(name);;
1257h->Divide(hist1,hist2,1,1,"B");
1258
1259return h;
1260}
1261
1262//_____________________________________________________________________________
a9b12ce1 1263//THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, THnSparse *const hist2, char *const name) {
e9f7cb15 1264THnSparse* AlidNdPtHelper::GenerateContCorrMatrix(THnSparse *const hist1, const THnSparse *const hist2, const char* name) {
0aaa8b91 1265// generate contamination correction matrix
1266if(!hist1 || !hist2) return 0;
1267
1268THnSparse *hist = GenerateCorrMatrix(hist1, hist2, name);
1269if(!hist) return 0;
1270
1271// only for non ZERO bins!!!!
1272
1273Int_t* coord = new Int_t[hist->GetNdimensions()];
1274memset(coord, 0, sizeof(Int_t) * hist->GetNdimensions());
1275
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);
1282 }
1283
1284delete [] coord;
1285
1286return hist;
1287}
1288
1289//_____________________________________________________________________________
a9b12ce1 1290//TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, char *const name) {
1291TH2* AlidNdPtHelper::GenerateContCorrMatrix(TH2 *const hist1, TH2 *const hist2, const char* name) {
0aaa8b91 1292// generate contamination correction matrix
1293if(!hist1 || !hist2) return 0;
1294
1295TH2 *hist = GenerateCorrMatrix(hist1, hist2, name);
1296if(!hist) return 0;
1297
1298Int_t nBinsX = hist->GetNbinsX();
1299Int_t nBinsY = hist->GetNbinsY();
1300
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);
1307 }
1308 }
1309
1310return hist;
1311}
1312
1313//_____________________________________________________________________________
a9b12ce1 1314//TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, char *const name) {
1315TH1* AlidNdPtHelper::GenerateContCorrMatrix(TH1 *const hist1, TH1 *const hist2, const char* name) {
0aaa8b91 1316// generate contamination correction matrix
1317if(!hist1 || !hist2) return 0;
1318
1319TH1 *hist = GenerateCorrMatrix(hist1, hist2, name);
1320if(!hist) return 0;
1321
1322Int_t nBinsX = hist->GetNbinsX();
1323
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);
1329 }
1330
1331return hist;
1332}
1333
1334//_____________________________________________________________________________
e9f7cb15 1335const 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){
0aaa8b91 1336 //
1337 // TPC Z vertexer
1338 //
bad4ba69 1339 if(!esdEvent)
1340 {
1341 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1342 return NULL;
1343 }
1344
1345 if(!evtCuts || !accCuts || !trackCuts)
1346 {
1347 ::Error("AlidNdPtHelper::GetTPCVertexZ()","cuts not available");
1348 return NULL;
1349 }
1350
1351 Double_t vtxpos[3]={evtCuts->GetMeanXv(),evtCuts->GetMeanYv(),evtCuts->GetMeanZv()};
1352 Double_t vtxsigma[3]={evtCuts->GetSigmaMeanXv(),evtCuts->GetSigmaMeanYv(),evtCuts->GetSigmaMeanZv()};
0aaa8b91 1353 AliESDVertex vtx0(vtxpos,vtxsigma);
bad4ba69 1354
1355 Double_t maxDCAr = accCuts->GetMaxDCAr();
1356 Double_t maxDCAz = accCuts->GetMaxDCAz();
1357 Int_t minTPCClust = trackCuts->GetMinNClusterTPC();
1358
0aaa8b91 1359 //
1360 Int_t ntracks = esdEvent->GetNumberOfTracks();
1361 TVectorD ztrack(ntracks);
0aaa8b91 1362 Double_t dca[2],cov[3];
1363 Int_t counter=0;
1364 for (Int_t i=0;i <ntracks; i++){
1365 AliESDtrack *t = esdEvent->GetTrack(i);
1366 if (!t) continue;
1367 if (!t->GetTPCInnerParam()) continue;
bad4ba69 1368 if (t->GetTPCNcls()<minTPCClust) continue;
0aaa8b91 1369 //
774986ef 1370
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
1374
0aaa8b91 1375 AliExternalTrackParam *tpcTrack = new AliExternalTrackParam(*(t->GetTPCInnerParam()));
b4cdc39d 1376 if(!tpcTrack) return 0;
774986ef 1377 if (!tpcTrack->PropagateToDCABxByBz(&vtx0,b,kMaxStep,dca,cov)) continue;
0aaa8b91 1378
1379 //
bad4ba69 1380 if (TMath::Abs(dca[0])>maxDCAr) continue;
1381 //if (TMath::Sqrt(cov[0])>sigmaXYcut) continue;
1382 if (TMath::Abs(tpcTrack->GetZ())>maxDCAz) continue;
0aaa8b91 1383
0aaa8b91 1384 ztrack[counter]=tpcTrack->GetZ();
1385 counter++;
1386
1387 if(tpcTrack) delete tpcTrack;
1388 }
bad4ba69 1389
0aaa8b91 1390 //
1391 // Find LTM z position
1392 //
1393 Double_t mean=0, sigma=0;
1394 if (counter<ntracksMin) return 0;
1395 //
1396 Int_t nused = TMath::Nint(counter*fraction);
1397 if (nused==counter) nused=counter-1;
1398 if (nused>1){
1399 AliMathBase::EvaluateUni(counter, ztrack.GetMatrixArray(), mean,sigma, TMath::Nint(counter*fraction));
1400 sigma/=TMath::Sqrt(nused);
1401 }else{
1402 mean = TMath::Mean(counter, ztrack.GetMatrixArray());
1403 sigma = TMath::RMS(counter, ztrack.GetMatrixArray());
1404 sigma/=TMath::Sqrt(counter-1);
1405 }
1406 vtxpos[2]=mean;
1407 vtxsigma[2]=sigma;
1408 const AliESDVertex* vertex = new AliESDVertex(vtxpos, vtxsigma);
1409 return vertex;
1410}
1411
1412//_____________________________________________________________________________
e9f7cb15 1413Int_t AlidNdPtHelper::GetSPDMBTrackMult(const AliESDEvent* const esdEvent, Float_t deltaThetaCut, Float_t deltaPhiCut)
0aaa8b91 1414{
1415 //
1416 // SPD track multiplicity
1417 //
1418
1419 // get tracklets
1420 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1421 if (!mult)
1422 return 0;
1423
1424 // get multiplicity from SPD tracklets
1425 Int_t inputCount = 0;
1426 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1427 {
1428 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1429
1430 Float_t phi = mult->GetPhi(i);
1431 if (phi < 0)
1432 phi += TMath::Pi() * 2;
1433 Float_t deltaPhi = mult->GetDeltaPhi(i);
1434 Float_t deltaTheta = mult->GetDeltaTheta(i);
1435
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);
1438
1439 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1440 continue;
1441
1442 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1443 continue;
1444
1445 ++inputCount;
1446 }
1447
1448return inputCount;
1449}
1450
1451//_____________________________________________________________________________
e9f7cb15 1452Int_t AlidNdPtHelper::GetSPDMBPrimTrackMult(const AliESDEvent* const esdEvent, AliStack* const stack, Float_t deltaThetaCut, Float_t deltaPhiCut)
0aaa8b91 1453{
1454 //
1455 // SPD track multiplicity
1456 //
1457
1458 // get tracklets
1459 const AliMultiplicity* mult = esdEvent->GetMultiplicity();
1460 if (!mult)
1461 return 0;
1462
1463 // get multiplicity from SPD tracklets
1464 Int_t inputCount = 0;
1465 for (Int_t i=0; i<mult->GetNumberOfTracklets(); ++i)
1466 {
1467 //printf("%d %f %f %f\n", i, mult->GetTheta(i), mult->GetPhi(i), mult->GetDeltaPhi(i));
1468
1469 Float_t phi = mult->GetPhi(i);
1470 if (phi < 0)
1471 phi += TMath::Pi() * 2;
1472 Float_t deltaPhi = mult->GetDeltaPhi(i);
1473 Float_t deltaTheta = mult->GetDeltaTheta(i);
1474
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);
1477
1478 if (deltaThetaCut > 0. && TMath::Abs(deltaTheta) > deltaThetaCut)
1479 continue;
1480
1481 if (deltaPhiCut > 0. && TMath::Abs(deltaPhi) > deltaPhiCut)
1482 continue;
1483
1484
1485 if (mult->GetLabel(i, 0) < 0 || mult->GetLabel(i, 0) != mult->GetLabel(i, 1) ||
1486 !stack->IsPhysicalPrimary(mult->GetLabel(i, 0)))
1487 continue;
1488
1489
1490 ++inputCount;
1491 }
1492
1493return inputCount;
1494}
fc98fbb5 1495//_____________________________________________________________________________
1496
1497THnSparse* AlidNdPtHelper::RebinTHnSparse(const THnSparse* hist1, THnSparse* hist2, const Char_t* newname, Option_t* option)
1498{
1499 THnSparse* htemp = 0;
1500 const THnSparse* hist = 0;
1501 TString opt = option;
1502 opt.ToLower();
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");
1512 return 0;
1513 }
1514 Int_t* dims = new Int_t[ndim];
1515 for (Int_t i = 0; i < ndim; i++) { dims[i] = i; }
1516 if (useRange) {
1517 htemp = hist1->Projection(ndim,dims,"e");
1518 hist = htemp;
1519 } else { hist = hist1; }
1520 //THnSparse* hnew = hist2->Projection(ndim,dims,"o");
1521 //hnew->SetName(newname);
1522 THnSparse* hnew = 0;
1523 if (overwrite) {
1524 hnew = hist2;
1525 } else {
1526 hnew = (THnSparse*) hist2->Clone(newname);
1527 }
1528 for (Int_t i = 0; i < ndim; i++) { hnew->GetAxis(i)->SetRange(); }
1529 hnew->SetTitle(hist1->GetTitle());
1530 hnew->Reset();
1531 hnew->Sumw2();
1532 Double_t content;
1533 Double_t error;
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]);
1542 }
1543 /* function IsInRange is protected, shit!
1544 if (useRange) {
1545 if (! hist1->IsInRange(c)) continue;
1546 }
1547 */
1548 if (calcErrors) {
1549 // implementation to be done
1550 } else {
1551 hnew->Fill(x,content);
1552 }
1553 }
1554 delete[] c; c=0;
1555 delete[] x; x=0;
1556 delete[] dims; dims=0;
1557 if (htemp) { delete htemp; htemp = 0;}
1558 return hnew;
1559}
0aaa8b91 1560
1561