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f5ec6c30 1/**************************************************************************
2 * Copyright(c) 1998-2009, 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//-----------------------------------------------------------------------
17// Class for HF corrections as a function of many variables
18// 6 Steps introduced: MC, MC Acc, Reco, Reco Acc, Reco Acc + ITS Cl,
19// Reco Acc + ITS Cl + PPR cuts
20// 11 variables used: pt, y, cosThetaStar, ptPi, ptK, ct,
21// dca, d0Pi, d0K, d0Pixd0K, cosPointingAngle
22//
23//-----------------------------------------------------------------------
24// Author : C. Zampolli, CERN
25//-----------------------------------------------------------------------
26
27#include <TCanvas.h>
28#include <TParticle.h>
c180f65d 29#include <TDatabasePDG.h>
f5ec6c30 30#include <TH1I.h>
31#include <TStyle.h>
844d235c 32#include <TFile.h>
f5ec6c30 33
34#include "AliCFHeavyFlavourTaskMultiVarMultiStep.h"
35#include "AliStack.h"
36#include "AliMCEvent.h"
37#include "AliCFManager.h"
38#include "AliCFContainer.h"
39#include "AliLog.h"
40#include "AliAODEvent.h"
41#include "AliAODRecoDecay.h"
42#include "AliAODRecoDecayHF.h"
43#include "AliAODRecoDecayHF2Prong.h"
44#include "AliAODMCParticle.h"
45
46//__________________________________________________________________________
47AliCFHeavyFlavourTaskMultiVarMultiStep::AliCFHeavyFlavourTaskMultiVarMultiStep() :
48 AliAnalysisTaskSE(),
49 fPDG(0),
50 fCFManager(0x0),
51 fHistEventsProcessed(0x0),
52 fCountMC(0),
53 fCountAcc(0),
54 fCountReco(0),
55 fCountRecoAcc(0),
56 fCountRecoITSClusters(0),
57 fCountRecoPPR(0),
58 fEvents(0),
59 fFillFromGenerated(kFALSE),
60 fMinITSClusters(5)
61{
62 //
63 //Default ctor
64 //
65}
66//___________________________________________________________________________
67AliCFHeavyFlavourTaskMultiVarMultiStep::AliCFHeavyFlavourTaskMultiVarMultiStep(const Char_t* name) :
68 AliAnalysisTaskSE(name),
69 fPDG(0),
70 fCFManager(0x0),
71 fHistEventsProcessed(0x0),
72 fCountMC(0),
73 fCountAcc(0),
74 fCountReco(0),
75 fCountRecoAcc(0),
76 fCountRecoITSClusters(0),
77 fCountRecoPPR(0),
78 fEvents(0),
79 fFillFromGenerated(kFALSE),
80 fMinITSClusters(5)
81{
82 //
83 // Constructor. Initialization of Inputs and Outputs
84 //
85 Info("AliCFHeavyFlavourTaskMultiVarMultiStep","Calling Constructor");
86 /*
87 DefineInput(0) and DefineOutput(0)
88 are taken care of by AliAnalysisTaskSE constructor
89 */
90 DefineOutput(1,TH1I::Class());
91 DefineOutput(2,AliCFContainer::Class());
92}
93
94//___________________________________________________________________________
95AliCFHeavyFlavourTaskMultiVarMultiStep& AliCFHeavyFlavourTaskMultiVarMultiStep::operator=(const AliCFHeavyFlavourTaskMultiVarMultiStep& c)
96{
97 //
98 // Assignment operator
99 //
100 if (this!=&c) {
101 AliAnalysisTaskSE::operator=(c) ;
102 fPDG = c.fPDG;
103 fCFManager = c.fCFManager;
104 fHistEventsProcessed = c.fHistEventsProcessed;
105 }
106 return *this;
107}
108
109//___________________________________________________________________________
110AliCFHeavyFlavourTaskMultiVarMultiStep::AliCFHeavyFlavourTaskMultiVarMultiStep(const AliCFHeavyFlavourTaskMultiVarMultiStep& c) :
111 AliAnalysisTaskSE(c),
112 fPDG(c.fPDG),
113 fCFManager(c.fCFManager),
114 fHistEventsProcessed(c.fHistEventsProcessed),
115 fCountMC(c.fCountMC),
116 fCountAcc(c.fCountAcc),
117 fCountReco(c.fCountReco),
118 fCountRecoAcc(c.fCountRecoAcc),
119 fCountRecoITSClusters(c.fCountRecoITSClusters),
120 fCountRecoPPR(c.fCountRecoPPR),
121 fEvents(c.fEvents),
122 fFillFromGenerated(c.fFillFromGenerated),
123 fMinITSClusters(c.fMinITSClusters)
124{
125 //
126 // Copy Constructor
127 //
128}
129
130//___________________________________________________________________________
131AliCFHeavyFlavourTaskMultiVarMultiStep::~AliCFHeavyFlavourTaskMultiVarMultiStep() {
132 //
133 //destructor
134 //
135 if (fCFManager) delete fCFManager ;
136 if (fHistEventsProcessed) delete fHistEventsProcessed ;
137}
138
139//_________________________________________________
140void AliCFHeavyFlavourTaskMultiVarMultiStep::UserExec(Option_t *)
141{
142 //
143 // Main loop function
144 //
145
146 if (fFillFromGenerated){
147 AliWarning("Flag to fill container with generated value ON ---> dca, d0pi, d0K, d0xd0, cosPointingAngle will be set as dummy!");
148 }
149
150 if (!fInputEvent) {
151 Error("UserExec","NO EVENT FOUND!");
152 return;
153 }
154
155 fEvents++;
156 if (fEvents%10000 ==0) AliInfo(Form("Event %d",fEvents));
157 AliAODEvent* aodEvent = dynamic_cast<AliAODEvent*>(fInputEvent);
158 fCFManager->SetEventInfo(aodEvent);
159
160 // MC-event selection
161 Double_t containerInput[11] ;
162
163 //loop on the MC event
164
165 TClonesArray* mcArray = dynamic_cast<TClonesArray*>(aodEvent->FindListObject(AliAODMCParticle::StdBranchName()));
166 if (!mcArray) AliError("Could not find Monte-Carlo in AOD");
167 Int_t icountMC = 0;
168 Int_t icountAcc = 0;
169 Int_t icountReco = 0;
170 Int_t icountRecoAcc = 0;
171 Int_t icountRecoITSClusters = 0;
172 Int_t icountRecoPPR = 0;
173
174 for (Int_t iPart=0; iPart<mcArray->GetEntriesFast(); iPart++) {
175 AliAODMCParticle* mcPart = dynamic_cast<AliAODMCParticle*>(mcArray->At(iPart));
176 if (!mcPart) {
177 AliWarning("Particle not found in tree, skipping");
178 continue;
179 }
180
181 // check the MC-level cuts
182 if (!fCFManager->CheckParticleCuts(0, mcPart)) continue; // 0 stands for MC level
183
184 // fill the container for Gen-level selection
185 Double_t vectorMC[6] = {9999.,9999.,9999.,9999.,9999.,9999.};
186 if (GetGeneratedValuesFromMCParticle(mcPart, mcArray, vectorMC)){
187 containerInput[0] = vectorMC[0];
188 containerInput[1] = vectorMC[1] ;
189 containerInput[2] = vectorMC[2] ;
190 containerInput[3] = vectorMC[3] ;
191 containerInput[4] = vectorMC[4] ;
192 containerInput[5] = vectorMC[5] ; // in micron
193 containerInput[6] = 0.; // dummy value, meaningless in MC, in micron
194 containerInput[7] = 0.; // dummy value, meaningless in MC, in micron
195 containerInput[8] = 0.; // dummy value, meaningless in MC, in micron
196 containerInput[9] = -100000.; // dummy value, meaningless in MC, in micron^2
197 containerInput[10] = 1.01; // dummy value, meaningless in MC
198 fCFManager->GetParticleContainer()->Fill(containerInput,kStepGenerated);
199 icountMC++;
200
201 // check the MC-Acceptance level cuts
202 // since standard CF functions are not applicable, using Kine Cuts on daughters
203
204 Int_t daughter0 = mcPart->GetDaughter(0);
205 Int_t daughter1 = mcPart->GetDaughter(1);
206 AliDebug(2, Form("daughter0 = %d and daughter1 = %d",daughter0,daughter1));
207 if (daughter0 == 0 || daughter1 == 0) {
208 AliDebug(2, "Error! the D0 MC doesn't have correct daughters!! But it should have, this check was already done...");
209 }
210 if (TMath::Abs(daughter1 - daughter0 != 1)) {
211 AliDebug(2, "The D0 MC doesn't come from a 2-prong decay, but it should be, this check was already done...");
212 }
213 AliAODMCParticle* mcPartDaughter0 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter0));
214 AliAODMCParticle* mcPartDaughter1 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter1));
215 if (!mcPartDaughter0 || !mcPartDaughter1) {
216 AliWarning("At least one Daughter Particle not found in tree, but it should be, this check was already done...");
217 }
218 Double_t eta0 = mcPartDaughter0->Eta();
219 Double_t eta1 = mcPartDaughter1->Eta();
220 Double_t y0 = mcPartDaughter0->Y();
221 Double_t y1 = mcPartDaughter1->Y();
222 Double_t pt0 = mcPartDaughter0->Pt();
223 Double_t pt1 = mcPartDaughter1->Pt();
224 AliDebug(2, Form("Daughter 0: eta = %f, y = %f, pt = %f", eta0, y0, pt0));
225 AliDebug(2, Form("Daughter 1: eta = %f, y = %f, pt = %f", eta1, y1, pt1));
226 Bool_t daught0inAcceptance = (TMath::Abs(eta0) < 0.9 && pt0 > 0.1);
227 Bool_t daught1inAcceptance = (TMath::Abs(eta1) < 0.9 && pt1 > 0.1);
228 if (daught0inAcceptance && daught1inAcceptance) {
229 // checking whether the cuts implemented in the CF are equivalent - simply a cross-check
230 AliDebug(2, "Daughter particles in acceptance");
231 if (!fCFManager->CheckParticleCuts(1, mcPartDaughter0)) {
232 AliInfo("Inconsistency with CF cut for daughter 0!");
233 }
234 if (!fCFManager->CheckParticleCuts(1, mcPartDaughter1)) {
235 AliInfo("Inconsistency with CF cut for daughter 1!");
236 }
237 fCFManager->GetParticleContainer()->Fill(containerInput,kStepAcceptance);
238 icountAcc++;
239 }
240 }
241 else {
242 AliDebug(3,"Problems in filling the container");
243 continue;
244 }
245 }
246
247 AliDebug(2, Form("Found %i MC particles that are D0!!",icountMC));
248 AliDebug(2, Form("Found %i MC particles that are D0 and satisfy Acc cuts!!",icountAcc));
249
250 // Now go to rec level
251 fCountMC += icountMC;
252 fCountAcc += icountAcc;
253
1e090d47 254 // AOD primary vertex
255 AliAODVertex *vtx1 = (AliAODVertex*)aodEvent->GetPrimaryVertex();
256
f5ec6c30 257 // load heavy flavour vertices
1e090d47 258 TClonesArray *arrayD0toKpi = (TClonesArray*)((aodEvent->GetList())->FindObject("D0toKpi"));
259 if (!arrayD0toKpi) AliError("Could not find array of HF vertices");
260 AliDebug(2, Form("Found %d vertices",arrayD0toKpi->GetEntriesFast()));
f5ec6c30 261
1e090d47 262 for (Int_t iD0toKpi = 0; iD0toKpi<arrayD0toKpi->GetEntriesFast(); iD0toKpi++) {
f5ec6c30 263
1e090d47 264 AliAODRecoDecayHF2Prong* d0tokpi = (AliAODRecoDecayHF2Prong*)arrayD0toKpi->At(iD0toKpi);
265 Bool_t unsetvtx=kFALSE;
266 if(!d0tokpi->GetOwnPrimaryVtx()) {
267 d0tokpi->SetOwnPrimaryVtx(vtx1); // needed to compute all variables
268 unsetvtx=kTRUE;
269 }
270
f5ec6c30 271 // find associated MC particle
1e090d47 272 Int_t mcLabel = d0tokpi->MatchToMC(421, mcArray) ;
f5ec6c30 273 if (mcLabel == -1)
274 {
275 AliDebug(2,"No MC particle found");
276 }
277 else {
278 AliAODMCParticle* mcVtxHF = (AliAODMCParticle*)mcArray->At(mcLabel);
279 if (!mcVtxHF) {
280 AliWarning("Could not find associated MC in AOD MC tree");
281 continue;
282 }
283
284 // check if associated MC v0 passes the cuts
285 if (!fCFManager->CheckParticleCuts(0 ,mcVtxHF)) { // 0 stands for MC
286 AliDebug(2, "Skipping the particles due to cuts");
287 continue;
288 }
289
290
291 // fill the container...
1e090d47 292 Double_t pt = d0tokpi->Pt();
293 Double_t rapidity = d0tokpi->YD0();
f5ec6c30 294
295 Double_t cosThetaStar = 9999.;
296 Double_t pTpi = 0.;
297 Double_t pTK = 0.;
1e090d47 298 Double_t dca = d0tokpi->GetDCA();
f5ec6c30 299 Double_t d0pi = 0.;
300 Double_t d0K = 0.;
1e090d47 301 Double_t d0xd0 = d0tokpi->Prodd0d0();
302 Double_t cosPointingAngle = d0tokpi->CosPointingAngle();
f5ec6c30 303 Int_t pdgCode = mcVtxHF->GetPdgCode();
304 if (pdgCode > 0){
1e090d47 305 cosThetaStar = d0tokpi->CosThetaStarD0();
306 pTpi = d0tokpi->PtProng(0);
307 pTK = d0tokpi->PtProng(1);
308 d0pi = d0tokpi->Getd0Prong(0);
309 d0K = d0tokpi->Getd0Prong(1);
f5ec6c30 310 }
311 else {
1e090d47 312 cosThetaStar = d0tokpi->CosThetaStarD0bar();
313 pTpi = d0tokpi->PtProng(1);
314 pTK = d0tokpi->PtProng(0);
315 d0pi = d0tokpi->Getd0Prong(1);
316 d0K = d0tokpi->Getd0Prong(0);
f5ec6c30 317 }
318
1e090d47 319 Double_t cT = d0tokpi->CtD0();
f5ec6c30 320
321 if (!fFillFromGenerated){
322 // ...either with reconstructed values....
323 containerInput[0] = pt;
324 containerInput[1] = rapidity;
325 containerInput[2] = cosThetaStar;
326 containerInput[3] = pTpi;
327 containerInput[4] = pTK;
328 containerInput[5] = cT*1.E4; // in micron
329 containerInput[6] = dca*1.E4; // in micron
330 containerInput[7] = d0pi*1.E4; // in micron
331 containerInput[8] = d0K*1.E4; // in micron
332 containerInput[9] = d0xd0*1.E8; // in micron^2
333 containerInput[10] = cosPointingAngle; // in micron
334 }
335 else {
336 // ... or with generated values
337 Double_t vectorMC[6] = {9999.,9999.,9999.,9999.,9999.,9999.};
338 if (GetGeneratedValuesFromMCParticle(mcVtxHF, mcArray, vectorMC)){
339 containerInput[0] = vectorMC[0];
340 containerInput[1] = vectorMC[1] ;
341 containerInput[2] = vectorMC[2] ;
342 containerInput[3] = vectorMC[3] ;
343 containerInput[4] = vectorMC[4] ;
344 containerInput[5] = vectorMC[5] ; // in micron
345 containerInput[6] = 0.; // dummy value, meaningless in MC, in micron
346 containerInput[7] = 0.; // dummy value, meaningless in MC, in micron
347 containerInput[8] = 0.; // dummy value, meaningless in MC, in micron
348 containerInput[9] = 100000.; // dummy value, meaningless in MC, in micron^2
349 containerInput[10] = 1.01; // dummy value, meaningless in MC
350 }
351 else {
352 AliDebug(3,"Problems in filling the container");
353 continue;
354 }
355 }
356 AliDebug(2, Form("Filling the container with pt = %f, rapidity = %f, cosThetaStar = %f, pTpi = %f, pTK = %f, cT = %f", containerInput[0], containerInput[1], containerInput[2], containerInput[3], containerInput[4], containerInput[5]));
357 icountReco++;
358 fCFManager->GetParticleContainer()->Fill(containerInput,kStepReconstructed) ;
359
360 // cut in acceptance
1e090d47 361 Bool_t acceptanceProng0 = (TMath::Abs(d0tokpi->EtaProng(0))< 0.9 && d0tokpi->PtProng(0) > 0.1);
362 Bool_t acceptanceProng1 = (TMath::Abs(d0tokpi->EtaProng(1))< 0.9 && d0tokpi->PtProng(1) > 0.1);
f5ec6c30 363 if (acceptanceProng0 && acceptanceProng1) {
364 AliDebug(2,"D0 reco daughters in acceptance");
365 fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoAcceptance) ;
366 icountRecoAcc++;
367
368 // cut on the min n. of clusters in ITS
369 Int_t ncls0=0;
1e090d47 370 for(Int_t l=0;l<6;l++) if(TESTBIT(d0tokpi->GetITSClusterMap(),l)) ncls0++;
f5ec6c30 371 AliDebug(2, Form("n clusters = %d", ncls0));
372 if (ncls0 >= fMinITSClusters){
373 fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoITSClusters) ;
374 icountRecoITSClusters++;
375 AliDebug(2,Form("pT = %f, dca = %f, cosThetaStar = %f, pTpi = %f, pTK = %f, d0pi = %f, d0K = %f, d0xd0 = %f, cosPointingAngle = %f", pt, dca, cosThetaStar,pTpi, pTK, d0pi*1E4, d0K*1E4, d0xd0*1E8, cosPointingAngle));
376
377 // PPR cuts
844d235c 378 Double_t cuts[6] = {9999999., 1.1, 0., 9999999., 9999999., 0.};
f5ec6c30 379 if (pt <= 1){
380 cuts[0] = 400;
381 cuts[1] = 0.8;
382 cuts[2] = 0.5;
383 cuts[3] = 500;
384 cuts[4] = -20000;
385 cuts[5] = 0.5;
386 }
387 else if (pt > 1 && pt <= 2){
388 cuts[0] = 300;
389 cuts[1] = 0.8;
390 cuts[2] = 0.6;
391 cuts[3] = 500;
392 cuts[4] = -20000;
393 cuts[5] = 0.6;
394 }
395 else if (pt > 2 && pt <= 3){
396 cuts[0] = 200;
397 cuts[1] = 0.8;
398 cuts[2] = 0.7;
399 cuts[3] = 500;
400 cuts[4] = -20000;
401 cuts[5] = 0.8;
402 }
403 else if (pt > 3 && pt <= 5){
404 cuts[0] = 200;
405 cuts[1] = 0.8;
406 cuts[2] = 0.7;
407 cuts[3] = 500;
408 cuts[4] = -10000;
409 cuts[5] = 0.8;
410 }
411 else if (pt > 5){
412 cuts[0] = 200;
413 cuts[1] = 0.8;
414 cuts[2] = 0.7;
415 cuts[3] = 500;
416 cuts[4] = -5000;
417 cuts[5] = 0.8;
418 }
419 if (dca*1E4 < cuts[0]
420 && TMath::Abs(cosThetaStar) < cuts[1]
421 && pTpi > cuts[2]
422 && pTK > cuts[2]
423 && TMath::Abs(d0pi*1E4) < cuts[3]
424 && TMath::Abs(d0K*1E4) < cuts[3]
425 && d0xd0*1E8 < cuts[4]
426 && cosPointingAngle > cuts[5]
427 ){
428
429 AliDebug(2,"Particle passed PPR cuts");
430 fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoPPR) ;
431 icountRecoPPR++;
432 }
433 else{
434 AliDebug(2,"Particle skipped due to PPR cuts");
435 if (dca*1E4 > cuts[0]){
436 AliDebug(2,"Problems with dca");
437 }
438 if ( TMath::Abs(cosThetaStar) > cuts[1]){
439 AliDebug(2,"Problems with cosThetaStar");
440 }
441 if (pTpi < cuts[2]){
442 AliDebug(2,"Problems with pTpi");
443 }
444 if (pTK < cuts[2]){
445 AliDebug(2,"Problems with pTK");
446 }
447 if (TMath::Abs(d0pi*1E4) > cuts[3]){
448 AliDebug(2,"Problems with d0pi");
449 }
450 if (TMath::Abs(d0K*1E4) > cuts[3]){
451 AliDebug(2,"Problems with d0K");
452 }
453 if (d0xd0*1E8 > cuts[4]){
454 AliDebug(2,"Problems with d0xd0");
455 }
456 if (cosPointingAngle < cuts[5]){
457 AliDebug(2,"Problems with cosPointingAngle");
458 }
459 }
460 }
461 }
462 }
1e090d47 463 if(unsetvtx) d0tokpi->UnsetOwnPrimaryVtx();
464 } // end loop on D0->Kpi
f5ec6c30 465
466 AliDebug(2, Form("Found %i Reco particles that are D0!!",icountReco));
467
468 fCountReco+= icountReco;
469 fCountRecoAcc+= icountRecoAcc;
470 fCountRecoITSClusters+= icountRecoITSClusters;
471 fCountRecoPPR+= icountRecoPPR;
472
473 fHistEventsProcessed->Fill(0);
474 /* PostData(0) is taken care of by AliAnalysisTaskSE */
475 PostData(1,fHistEventsProcessed) ;
476 PostData(2,fCFManager->GetParticleContainer()) ;
477}
478
479
480//___________________________________________________________________________
481void AliCFHeavyFlavourTaskMultiVarMultiStep::Terminate(Option_t*)
482{
483 // The Terminate() function is the last function to be called during
484 // a query. It always runs on the client, it can be used to present
485 // the results graphically or save the results to file.
486
487 Info("Terminate","");
488 AliAnalysisTaskSE::Terminate();
489
490 AliInfo(Form("Found %i MC particles that are D0 in MC, in %d events",fCountMC,fEvents));
491 AliInfo(Form("Found %i MC particles that are D0 in MC and satisfy Acc cuts, in %d events",fCountAcc,fEvents));
492 AliInfo(Form("Found %i reco D0 that are decaying in K+pi, in %d events",fCountReco,fEvents));
493 AliInfo(Form("Among the above, found %i reco D0 that are decaying in K+pi and are in the requested acceptance, in %d events",fCountRecoAcc,fEvents));
494 AliInfo(Form("Among the above, found %i reco D0 that are decaying in K+pi and have at least %d clusters in ITS, in %d events",fCountRecoITSClusters,fMinITSClusters,fEvents));
495 AliInfo(Form("Among the above, found %i reco D0 that are decaying in K+pi and satisfy PPR cuts, in %d events",fCountRecoPPR,fEvents));
496
497 // draw some example plots....
498
499 AliCFContainer *cont= dynamic_cast<AliCFContainer*> (GetOutputData(2));
500
501 // projecting the containers to obtain histograms
502 // first argument = variable, second argument = step
503
504 // MC-level
505 TH1D* h00 = cont->ShowProjection(0,0) ; // pt
506 TH1D* h10 = cont->ShowProjection(1,0) ; // rapidity
507 TH1D* h20 = cont->ShowProjection(2,0) ; // cosThetaStar
508 TH1D* h30 = cont->ShowProjection(3,0) ; // pTpi
509 TH1D* h40 = cont->ShowProjection(4,0) ; // pTK
510 TH1D* h50 = cont->ShowProjection(5,0) ; // cT
511 TH1D* h60 = cont->ShowProjection(6,0) ; // dca
512 TH1D* h70 = cont->ShowProjection(7,0) ; // d0pi
513 TH1D* h80 = cont->ShowProjection(8,0) ; // d0K
514 TH1D* h90 = cont->ShowProjection(9,0) ; // d0xd0
515 TH1D* h100 = cont->ShowProjection(10,0) ; // cosPointingAngle
516
517 // MC-Acceptance level
518 TH1D* h01 = cont->ShowProjection(0,1) ; // pt
519 TH1D* h11 = cont->ShowProjection(1,1) ; // rapidity
520 TH1D* h21 = cont->ShowProjection(2,1) ; // cosThetaStar
521 TH1D* h31 = cont->ShowProjection(3,1) ; // pTpi
522 TH1D* h41 = cont->ShowProjection(4,1) ; // pTK
523 TH1D* h51 = cont->ShowProjection(5,1) ; // cT
524 TH1D* h61 = cont->ShowProjection(6,1) ; // dca
525 TH1D* h71 = cont->ShowProjection(7,1) ; // d0pi
526 TH1D* h81 = cont->ShowProjection(8,1) ; // d0K
527 TH1D* h91 = cont->ShowProjection(9,1) ; // d0xd0
528 TH1D* h101 = cont->ShowProjection(10,1) ; // cosPointingAngle
529
530 // Reco-level
531 TH1D* h02 = cont->ShowProjection(0,2) ; // pt
532 TH1D* h12 = cont->ShowProjection(1,2) ; // rapidity
533 TH1D* h22 = cont->ShowProjection(2,2) ; // cosThetaStar
534 TH1D* h32 = cont->ShowProjection(3,2) ; // pTpi
535 TH1D* h42 = cont->ShowProjection(4,2) ; // pTK
536 TH1D* h52 = cont->ShowProjection(5,2) ; // cT
537 TH1D* h62 = cont->ShowProjection(6,2) ; // dca
538 TH1D* h72 = cont->ShowProjection(7,2) ; // d0pi
539 TH1D* h82 = cont->ShowProjection(8,2) ; // d0K
540 TH1D* h92 = cont->ShowProjection(9,2) ; // d0xd0
541 TH1D* h102 = cont->ShowProjection(10,2) ; // cosPointingAngle
542
543 h00->SetTitle("pT_D0 (GeV/c)");
544 h10->SetTitle("rapidity");
545 h20->SetTitle("cosThetaStar");
546 h30->SetTitle("pT_pi (GeV/c)");
547 h40->SetTitle("pT_K (Gev/c)");
548 h50->SetTitle("cT (#mum)");
549 h60->SetTitle("dca (#mum)");
550 h70->SetTitle("d0_pi (#mum)");
551 h80->SetTitle("d0_K (#mum)");
552 h90->SetTitle("d0xd0 (#mum^2)");
553 h100->SetTitle("cosPointingAngle");
554
555 h00->GetXaxis()->SetTitle("pT_D0 (GeV/c)");
556 h10->GetXaxis()->SetTitle("rapidity");
557 h20->GetXaxis()->SetTitle("cosThetaStar");
558 h30->GetXaxis()->SetTitle("pT_pi (GeV/c)");
559 h40->GetXaxis()->SetTitle("pT_K (Gev/c)");
560 h50->GetXaxis()->SetTitle("cT (#mum)");
561 h60->GetXaxis()->SetTitle("dca (#mum)");
562 h70->GetXaxis()->SetTitle("d0_pi (#mum)");
563 h80->GetXaxis()->SetTitle("d0_K (#mum)");
564 h90->GetXaxis()->SetTitle("d0xd0 (#mum^2)");
565 h100->GetXaxis()->SetTitle("cosPointingAngle");
566
567 h01->SetTitle("pT_D0 (GeV/c)");
568 h11->SetTitle("rapidity");
569 h21->SetTitle("cosThetaStar");
570 h31->SetTitle("pT_pi (GeV/c)");
571 h41->SetTitle("pT_K (Gev/c)");
572 h51->SetTitle("cT (#mum)");
573 h61->SetTitle("dca (#mum)");
574 h71->SetTitle("d0_pi (#mum)");
575 h81->SetTitle("d0_K (#mum)");
576 h91->SetTitle("d0xd0 (#mum^2)");
577 h101->SetTitle("cosPointingAngle");
578
579 h01->GetXaxis()->SetTitle("pT_D0 (GeV/c)");
580 h11->GetXaxis()->SetTitle("rapidity");
581 h21->GetXaxis()->SetTitle("cosThetaStar");
582 h31->GetXaxis()->SetTitle("pT_pi (GeV/c)");
583 h41->GetXaxis()->SetTitle("pT_K (Gev/c)");
584 h51->GetXaxis()->SetTitle("cT (#mum)");
585 h61->GetXaxis()->SetTitle("dca (#mum)");
586 h71->GetXaxis()->SetTitle("d0_pi (#mum)");
587 h81->GetXaxis()->SetTitle("d0_K (#mum)");
588 h91->GetXaxis()->SetTitle("d0xd0 (#mum^2)");
589 h101->GetXaxis()->SetTitle("cosPointingAngle");
590
591 h02->SetTitle("pT_D0 (GeV/c)");
592 h12->SetTitle("rapidity");
593 h22->SetTitle("cosThetaStar");
594 h32->SetTitle("pT_pi (GeV/c)");
595 h42->SetTitle("pT_K (Gev/c)");
596 h52->SetTitle("cT (#mum)");
597 h62->SetTitle("dca (#mum)");
598 h72->SetTitle("d0_pi (#mum)");
599 h82->SetTitle("d0_K (#mum)");
600 h92->SetTitle("d0xd0 (#mum^2)");
601 h102->SetTitle("cosPointingAngle");
602
603 h02->GetXaxis()->SetTitle("pT_D0 (GeV/c)");
604 h12->GetXaxis()->SetTitle("rapidity");
605 h22->GetXaxis()->SetTitle("cosThetaStar");
606 h32->GetXaxis()->SetTitle("pT_pi (GeV/c)");
607 h42->GetXaxis()->SetTitle("pT_K (Gev/c)");
608 h52->GetXaxis()->SetTitle("cT (#mum)");
609 h62->GetXaxis()->SetTitle("dca (#mum)");
610 h72->GetXaxis()->SetTitle("d0_pi (#mum)");
611 h82->GetXaxis()->SetTitle("d0_K (#mum)");
612 h92->GetXaxis()->SetTitle("d0xd0 (#mum^2)");
613 h102->GetXaxis()->SetTitle("cosPointingAngle");
614
615 Double_t max0 = h00->GetMaximum();
616 Double_t max1 = h10->GetMaximum();
617 Double_t max2 = h20->GetMaximum();
618 Double_t max3 = h30->GetMaximum();
619 Double_t max4 = h40->GetMaximum();
620 Double_t max5 = h50->GetMaximum();
621 Double_t max6 = h60->GetMaximum();
622 Double_t max7 = h70->GetMaximum();
623 Double_t max8 = h80->GetMaximum();
624 Double_t max9 = h90->GetMaximum();
625 Double_t max10 = h100->GetMaximum();
626
627 h00->GetYaxis()->SetRangeUser(0,max0*1.2);
628 h10->GetYaxis()->SetRangeUser(0,max1*1.2);
629 h20->GetYaxis()->SetRangeUser(0,max2*1.2);
630 h30->GetYaxis()->SetRangeUser(0,max3*1.2);
631 h40->GetYaxis()->SetRangeUser(0,max4*1.2);
632 h50->GetYaxis()->SetRangeUser(0,max5*1.2);
633 h60->GetYaxis()->SetRangeUser(0,max6*1.2);
634 h70->GetYaxis()->SetRangeUser(0,max7*1.2);
635 h80->GetYaxis()->SetRangeUser(0,max8*1.2);
636 h90->GetYaxis()->SetRangeUser(0,max9*1.2);
637 h100->GetYaxis()->SetRangeUser(0,max10*1.2);
638
639 h01->GetYaxis()->SetRangeUser(0,max0*1.2);
640 h11->GetYaxis()->SetRangeUser(0,max1*1.2);
641 h21->GetYaxis()->SetRangeUser(0,max2*1.2);
642 h31->GetYaxis()->SetRangeUser(0,max3*1.2);
643 h41->GetYaxis()->SetRangeUser(0,max4*1.2);
644 h51->GetYaxis()->SetRangeUser(0,max5*1.2);
645 h61->GetYaxis()->SetRangeUser(0,max6*1.2);
646 h71->GetYaxis()->SetRangeUser(0,max7*1.2);
647 h81->GetYaxis()->SetRangeUser(0,max8*1.2);
648 h91->GetYaxis()->SetRangeUser(0,max9*1.2);
649 h101->GetYaxis()->SetRangeUser(0,max10*1.2);
650
651 h00->SetMarkerStyle(20);
652 h10->SetMarkerStyle(24);
653 h20->SetMarkerStyle(21);
654 h30->SetMarkerStyle(25);
655 h40->SetMarkerStyle(27);
656 h50->SetMarkerStyle(28);
657 h60->SetMarkerStyle(20);
658 h70->SetMarkerStyle(24);
659 h80->SetMarkerStyle(21);
660 h90->SetMarkerStyle(25);
661 h100->SetMarkerStyle(27);
662
663 h00->SetMarkerColor(2);
664 h10->SetMarkerColor(2);
665 h20->SetMarkerColor(2);
666 h30->SetMarkerColor(2);
667 h40->SetMarkerColor(2);
668 h50->SetMarkerColor(2);
669 h60->SetMarkerColor(2);
670 h70->SetMarkerColor(2);
671 h80->SetMarkerColor(2);
672 h90->SetMarkerColor(2);
673 h100->SetMarkerColor(2);
674
675 h01->SetMarkerStyle(20) ;
676 h11->SetMarkerStyle(24) ;
677 h21->SetMarkerStyle(21) ;
678 h31->SetMarkerStyle(25) ;
679 h41->SetMarkerStyle(27) ;
680 h51->SetMarkerStyle(28) ;
681 h61->SetMarkerStyle(20);
682 h71->SetMarkerStyle(24);
683 h81->SetMarkerStyle(21);
684 h91->SetMarkerStyle(25);
685 h101->SetMarkerStyle(27);
686
687 h01->SetMarkerColor(8);
688 h11->SetMarkerColor(8);
689 h21->SetMarkerColor(8);
690 h31->SetMarkerColor(8);
691 h41->SetMarkerColor(8);
692 h51->SetMarkerColor(8);
693 h61->SetMarkerColor(8);
694 h71->SetMarkerColor(8);
695 h81->SetMarkerColor(8);
696 h91->SetMarkerColor(8);
697 h101->SetMarkerColor(8);
698
699 h02->SetMarkerStyle(20) ;
700 h12->SetMarkerStyle(24) ;
701 h22->SetMarkerStyle(21) ;
702 h32->SetMarkerStyle(25) ;
703 h42->SetMarkerStyle(27) ;
704 h52->SetMarkerStyle(28) ;
705 h62->SetMarkerStyle(20);
706 h72->SetMarkerStyle(24);
707 h82->SetMarkerStyle(21);
708 h92->SetMarkerStyle(25);
709 h102->SetMarkerStyle(27);
710
711 h02->SetMarkerColor(4);
712 h12->SetMarkerColor(4);
713 h22->SetMarkerColor(4);
714 h32->SetMarkerColor(4);
715 h42->SetMarkerColor(4);
716 h52->SetMarkerColor(4);
717 h62->SetMarkerColor(4);
718 h72->SetMarkerColor(4);
719 h82->SetMarkerColor(4);
720 h92->SetMarkerColor(4);
721 h102->SetMarkerColor(4);
722
723 gStyle->SetCanvasColor(0);
724 gStyle->SetFrameFillColor(0);
725 gStyle->SetTitleFillColor(0);
726 gStyle->SetStatColor(0);
727
728 // drawing in 2 separate canvas for a matter of clearity
729 TCanvas * c1 =new TCanvas("c1","pT, rapidiy, cosThetaStar",1100,1600);
730 c1->Divide(3,3);
731
732 c1->cd(1);
733 h00->Draw("p");
734 c1->cd(1);
735 c1->cd(2);
736 h01->Draw("p");
737 c1->cd(2);
738 c1->cd(3);
739 h02->Draw("p");
740 c1->cd(3);
741 c1->cd(4);
742 h10->Draw("p");
743 c1->cd(4);
744 c1->cd(5);
745 h11->Draw("p");
746 c1->cd(5);
747 c1->cd(6);
748 h12->Draw("p");
749 c1->cd(6);
750 c1->cd(7);
751 h20->Draw("p");
752 c1->cd(7);
753 c1->cd(8);
754 h21->Draw("p");
755 c1->cd(8);
756 c1->cd(9);
757 h22->Draw("p");
758 c1->cd(9);
759 c1->cd();
760
761 TCanvas * c2 =new TCanvas("c2","pTpi, pTK, cT",1100,1600);
762 c2->Divide(3,3);
763 c2->cd(1);
764 h30->Draw("p");
765 c2->cd(1);
766 c2->cd(2);
767 h31->Draw("p");
768 c2->cd(2);
769 c2->cd(3);
770 h32->Draw("p");
771 c2->cd(3);
772 c2->cd(4);
773 h40->Draw("p");
774 c2->cd(4);
775 c2->cd(5);
776 h41->Draw("p");
777 c2->cd(5);
778 c2->cd(6);
779 h42->Draw("p");
780 c2->cd(6);
781 c2->cd(7);
782 h50->Draw("p");
783 c2->cd(7);
784 c2->cd(8);
785 h51->Draw("p");
786 c2->cd(8);
787 c2->cd(9);
788 h52->Draw("p");
789 c2->cd(9);
790 c2->cd();
791
792 TCanvas * c3 =new TCanvas("c3","dca, d0pi, d0K",1100,1600);
793 c3->Divide(3,3);
794 c3->cd(1);
795 h60->Draw("p");
796 c3->cd(1);
797 c3->cd(2);
798 h61->Draw("p");
799 c3->cd(2);
800 c3->cd(3);
801 h62->Draw("p");
802 c3->cd(3);
803 c3->cd(4);
804 h70->Draw("p");
805 c3->cd(4);
806 c3->cd(5);
807 h71->Draw("p");
808 c3->cd(5);
809 c3->cd(6);
810 h72->Draw("p");
811 c3->cd(6);
812 c3->cd(7);
813 h80->Draw("p");
814 c3->cd(7);
815 c3->cd(8);
816 h81->Draw("p");
817 c3->cd(8);
818 c3->cd(9);
819 h82->Draw("p");
820 c3->cd(9);
821 c3->cd();
822
823 TCanvas * c4 =new TCanvas("c4","d0xd0, cosPointingAngle",1100,770);
824 c4->Divide(3,2);
825 c4->cd(1);
826 h90->Draw("p");
827 c4->cd(1);
828 c4->cd(2);
829 h91->Draw("p");
830 c4->cd(2);
831 c4->cd(3);
832 h92->Draw("p");
833 c4->cd(3);
834 c4->cd(4);
835 h100->Draw("p");
836 c4->cd(4);
837 c4->cd(5);
838 h101->Draw("p");
839 c4->cd(5);
840 c4->cd(6);
841 h102->Draw("p");
842 c4->cd(6);
843 c4->cd();
844
844d235c 845 TFile* file_projection = new TFile("file_projection.root","RECREATE");
846 h00->Write("pT_D0_step0");
847 h10->Write("rapidity_step0");
848 h20->Write("cosThetaStar_step0");
849 h30->Write("pT_pi_step0");
850 h40->Write("pT_K_step0");
851 h50->Write("cT_step0");
852 h60->Write("dca_step0");
853 h70->Write("d0_pi_step0");
854 h80->Write("d0_K_step0");
855 h90->Write("d0xd0_step0");
856 h100->Write("cosPointingAngle_step0");
857
858 h01->Write("pT_D0_step1");
859 h11->Write("rapidity_step1");
860 h21->Write("cosThetaStar_step1");
861 h31->Write("pT_pi_step1");
862 h41->Write("pT_K_step1");
863 h51->Write("cT_step1");
864 h61->Write("dca_step1");
865 h71->Write("d0_pi_step1");
866 h81->Write("d0_K_step1");
867 h91->Write("d0xd0_step1");
868 h101->Write("cosPointingAngle_step1");
869
870 h02->Write("pT_D0_step2");
871 h12->Write("rapidity_step2");
872 h22->Write("cosThetaStar_step2");
873 h32->Write("pT_pi_step2");
874 h42->Write("pT_K_step2");
875 h52->Write("cT_step2");
876 h62->Write("dca_step2");
877 h72->Write("d0_pi_step2");
878 h80->Write("d0_K_step2");
879 h92->Write("d0xd0_step2");
880 h102->Write("cosPointingAngle_step2");
881
882 file_projection->Close();
883
f5ec6c30 884 /*
885 c1->SaveAs("Plots/pT_rapidity_cosThetaStar.eps");
886 c2->SaveAs("Plots/pTpi_pTK_cT.eps");
887 c3->SaveAs("Plots/dca_d0pi_d0TK.eps");
888 c4->SaveAs("Plots/d0xd0_cosPointingAngle.eps");
889
890 c1->SaveAs("Plots/pT_rapidity_cosThetaStar.gif");
891 c2->SaveAs("Plots/pTpi_pTK_cT.gif");
892 c3->SaveAs("Plots/dca_d0pi_d0TK.gif");
893 c4->SaveAs("Plots/d0xd0_cosPointingAngle.gif");
894 */
895}
896
897//___________________________________________________________________________
898void AliCFHeavyFlavourTaskMultiVarMultiStep::UserCreateOutputObjects() {
899 //HERE ONE CAN CREATE OUTPUT OBJECTS, IN PARTICULAR IF THE OBJECT PARAMETERS DON'T NEED
900 //TO BE SET BEFORE THE EXECUTION OF THE TASK
901 //
902 Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
903
904 //slot #1
905 OpenFile(1);
906 fHistEventsProcessed = new TH1I("fHistEventsProcessed","",1,0,1) ;
907}
908
909//___________________________________________________________________________
910Double_t AliCFHeavyFlavourTaskMultiVarMultiStep::CosThetaStar(AliAODMCParticle* mcPart, AliAODMCParticle* mcPartDaughter0, AliAODMCParticle* mcPartDaughter1) const {
911
912 //
913 // to calculate cos(ThetaStar) for generated particle
914 // using the K, since mcPartDaughter0 and mcPartDaughter1 always correspond to K and pi respectively
915 // (see where the function is called)
916 //
917
918 Int_t pdgvtx = mcPart->GetPdgCode();
919 /* if (pdgvtx > 0) { // setting as the first daughter always the kaon, to be used to calculate cos(ThetaStar)
920 Int_t pdgprong0 = TMath::Abs(mcPartDaughter0->GetPdgCode());
921 Int_t pdgprong1 = TMath::Abs(mcPartDaughter1->GetPdgCode());
922 AliInfo(Form("D0, with pdgprong0 = %d, pdgprong1 = %d",pdgprong0,pdgprong1));
923 AliDebug(2,"This is a D0");
924 AliAODMCParticle* mcPartdummy = mcPartDaughter0;
925 mcPartDaughter0 = mcPartDaughter1;
926 mcPartDaughter1 = mcPartdummy;
927 }
928 else{
929 AliInfo("D0bar");
930 }
931 */
932 Int_t pdgprong0 = TMath::Abs(mcPartDaughter0->GetPdgCode());
933 Int_t pdgprong1 = TMath::Abs(mcPartDaughter1->GetPdgCode());
934 if (pdgvtx > 0) { // setting as the first daughter always the kaon, to be used to calculate cos(ThetaStar)
935 AliDebug(2,"D0");
936 }
937 else{
938 AliDebug(2,"D0bar");
939 }
940 if (pdgprong0 == 211){
941 AliDebug(2,Form("pdgprong0 = %d, pdgprong1 = %d, switching...",pdgprong0,pdgprong1));
942 AliAODMCParticle* mcPartdummy = mcPartDaughter0;
943 mcPartDaughter0 = mcPartDaughter1;
944 mcPartDaughter1 = mcPartdummy;
945 pdgprong0 = TMath::Abs(mcPartDaughter0->GetPdgCode());
946 pdgprong1 = TMath::Abs(mcPartDaughter1->GetPdgCode());
947 }
948
949 AliDebug(2,Form("After checking, pdgprong0 = %d, pdgprong1 = %d",pdgprong0,pdgprong1));
950 Double_t massvtx = TDatabasePDG::Instance()->GetParticle(TMath::Abs(pdgvtx))->Mass();
951 Double_t massp[2];
952 massp[0] = TDatabasePDG::Instance()->GetParticle(pdgprong0)->Mass();
953 massp[1] = TDatabasePDG::Instance()->GetParticle(pdgprong1)->Mass();
954
955 Double_t pStar = TMath::Sqrt(TMath::Power(massvtx*massvtx-massp[0]*massp[0]-massp[1]*massp[1],2.)-4.*massp[0]*massp[0]*massp[1]*massp[1])/(2.*massvtx);
956
957 Double_t px = mcPartDaughter0->Px()+mcPartDaughter1->Px();
958 Double_t py = mcPartDaughter0->Py()+mcPartDaughter1->Py();
959 Double_t pz = mcPartDaughter0->Pz()+mcPartDaughter1->Pz();
960 Double_t p = TMath::Sqrt(px*px+py*py+pz*pz);
961 Double_t e = TMath::Sqrt(massvtx*massvtx+p*p);
962 Double_t beta = p/e;
963 Double_t gamma = e/massvtx;
964 TVector3 mom(mcPartDaughter0->Px(),mcPartDaughter0->Py(),mcPartDaughter0->Pz());
965 TVector3 momTot(mcPartDaughter0->Px()+mcPartDaughter1->Px(),mcPartDaughter0->Py()+mcPartDaughter1->Py(),mcPartDaughter0->Pz()+mcPartDaughter1->Pz());
966
967 Double_t qlprong = mom.Dot(momTot)/momTot.Mag(); // analog to AliAODRecoDecay::QlProng(0)
968
969 AliDebug(2,Form("pStar = %f, beta = %f, gamma = %f, qlprong = %f, massp[0] = %f", pStar, beta, gamma, qlprong, massp[0]));
970 Double_t cts = (qlprong/gamma-beta*TMath::Sqrt(pStar*pStar+massp[0]*massp[0]))/pStar;
971 AliDebug(2,Form("cts = %f", cts));
972 return cts;
973}
974//___________________________________________________________________________
975Double_t AliCFHeavyFlavourTaskMultiVarMultiStep::CT(AliAODMCParticle* mcPart, AliAODMCParticle* mcPartDaughter0, AliAODMCParticle* mcPartDaughter1) const {
976
977 //
978 // to calculate cT for generated particle
979 //
980
981 Double_t xmcPart[3] = {0,0,0};
982 Double_t xdaughter0[3] = {0,0,0};
983 Double_t xdaughter1[3] = {0,0,0};
984 mcPart->XvYvZv(xmcPart); // cm
985 mcPartDaughter0->XvYvZv(xdaughter0); // cm
986 mcPartDaughter1->XvYvZv(xdaughter1); //cm
987 Double_t prodVtxD0 = TMath::Sqrt(xmcPart[0]*xmcPart[0]+
988 xmcPart[1]*xmcPart[1]+
989 xmcPart[2]*xmcPart[2]);
990 Double_t prodVtxDaughter0 = TMath::Sqrt(xdaughter0[0]*xdaughter0[0]+
991 xdaughter0[1]*xdaughter0[1]+
992 xdaughter0[2]*xdaughter0[2]);
993 Double_t prodVtxDaughter1 = TMath::Sqrt(xdaughter1[0]*xdaughter1[0]+
994 xdaughter1[1]*xdaughter1[1]+
995 xdaughter1[2]*xdaughter1[2]);
996
997 AliDebug(2, Form("D0: x = %f, y = %f, z = %f, production vertex distance = %f (cm), %f (micron)", xmcPart[0], xmcPart[1], xmcPart[2], prodVtxD0, prodVtxD0*1.E4));
998 AliDebug(2, Form("Daughter0: x = %f, y = %f, z = %f, production vertex distance = %f (cm) %f (micron)", xdaughter0[0], xdaughter0[1], xdaughter0[2], prodVtxDaughter0, prodVtxDaughter0*1E4));
999 AliDebug(2, Form("Daughter1: x = %f, y = %f, z = %f, production vertex distance = %f (cm) %f (micron)", xdaughter1[0], xdaughter1[1], xdaughter1[2], prodVtxDaughter1, prodVtxDaughter1*1.E4));
1000
1001 Double_t cT0 = TMath::Sqrt((xdaughter0[0]-xmcPart[0])*(xdaughter0[0]-xmcPart[0])+
1002 (xdaughter0[1]-xmcPart[1])*(xdaughter0[1]-xmcPart[1])+
1003 (xdaughter0[2]-xmcPart[2])*(xdaughter0[2]-xmcPart[2]));
1004
1005 Double_t cT1 = TMath::Sqrt((xdaughter1[0]-xmcPart[0])*(xdaughter1[0]-xmcPart[0])+
1006 (xdaughter1[1]-xmcPart[1])*(xdaughter1[1]-xmcPart[1])+
1007 (xdaughter1[2]-xmcPart[2])*(xdaughter1[2]-xmcPart[2]));
1008
1009 if (cT0 != cT1) {
1010 AliWarning("cT from daughter 0 different from cT from daughter 1! Using cT from daughter 0, but PLEASE, CHECK....");
1011 }
1012
1013 // calculating cT from cT0
1014
1015 Double_t mass = TDatabasePDG::Instance()->GetParticle(mcPart->GetPdgCode())->Mass(); // mcPart->GetPdgCode() should return +/- 421 for the D0/D0bar
1016 Double_t p = mcPart-> P();
1017 Double_t cT = cT0*mass/p;
1018 AliDebug(2, Form("cT from daughter 0 = %f (micron)", cT0*1E4));
1019 AliDebug(2, Form("cT from daughter 1 = %f (micron)", cT1*1E4));
1020 AliDebug(2, Form("cT (with mass = %f and p = %f) = %f (micron)", mass, p, cT*1E4));
1021 return cT;
1022}
1023//________________________________________________________________________________
1024Bool_t AliCFHeavyFlavourTaskMultiVarMultiStep::GetGeneratedValuesFromMCParticle(AliAODMCParticle* mcPart, TClonesArray* mcArray, Double_t* vectorMC) const {
1025
1026 //
1027 // collecting all the necessary info (pt, y, cosThetaStar, ptPi, ptKa, cT) from MC particle
1028 //
1029
1030 Bool_t isOk = kFALSE;
1031
1032 // check whether the D0 decays in pi+K
1033 // to be added!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1034 // could use a cut in the CF, but not clear how to define a TDecayChannel
1035 // implemented for the time being as a cut on the number of daughters - see later when
1036 // getting the daughters
1037
1038 // getting the daughters
1039 Int_t daughter0 = mcPart->GetDaughter(0);
1040 Int_t daughter1 = mcPart->GetDaughter(1);
1041 AliDebug(2, Form("daughter0 = %d and daughter1 = %d",daughter0,daughter1));
1042 if (daughter0 == 0 || daughter1 == 0) {
1043 AliDebug(2, "Error! the D0 MC doesn't have correct daughters!!");
1044 return isOk;
1045 }
1046 if (TMath::Abs(daughter1 - daughter0 != 1)) {
1047 AliDebug(2, "The D0 MC doesn't come from a 2-prong decay, skipping!!");
1048 return isOk;
1049 }
1050 AliAODMCParticle* mcPartDaughter0 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter0));
1051 AliAODMCParticle* mcPartDaughter1 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter1));
1052 if (!mcPartDaughter0 || !mcPartDaughter1) {
1053 AliWarning("At least one Daughter Particle not found in tree, skipping");
1054 return isOk;
1055 }
1056
1057 Double_t vtx1[3] = {0,0,0}; // primary vertex
1058 Double_t vtx2daughter0[3] = {0,0,0}; // secondary vertex from daughter 0
1059 Double_t vtx2daughter1[3] = {0,0,0}; // secondary vertex from daughter 1
1060 mcPart->XvYvZv(vtx1); // cm
1061 // getting vertex from daughters
1062 mcPartDaughter0->XvYvZv(vtx2daughter0); // cm
1063 mcPartDaughter1->XvYvZv(vtx2daughter1); //cm
1064 if (vtx2daughter0[0] != vtx2daughter1[0] && vtx2daughter0[1] != vtx2daughter1[1] && vtx2daughter0[2] != vtx2daughter1[2]) {
1065 AliError("Daughters have different secondary vertex, skipping the track");
1066 return isOk;
1067 }
1068 Int_t nprongs = 2;
1069 Short_t charge = 0;
1070 // always instantiate the AliAODRecoDecay with the positive daughter first, the negative second
1071 AliAODMCParticle* positiveDaugh = mcPartDaughter0;
1072 AliAODMCParticle* negativeDaugh = mcPartDaughter1;
1073 if (mcPartDaughter0->GetPdgCode()<0 && mcPartDaughter1->GetPdgCode()>0){
1074 // inverting in case the positive daughter is the second one
1075 positiveDaugh = mcPartDaughter1;
1076 negativeDaugh = mcPartDaughter0;
1077 }
1078 // getting the momentum from the daughters
1079 Double_t px[2] = {positiveDaugh->Px(), negativeDaugh->Px()};
1080 Double_t py[2] = {positiveDaugh->Py(), negativeDaugh->Py()};
1081 Double_t pz[2] = {positiveDaugh->Pz(), negativeDaugh->Pz()};
1082
1083 Double_t d0[2] = {0.,0.};
1084
1085 AliAODRecoDecayHF* decay = new AliAODRecoDecayHF(vtx1,vtx2daughter0,nprongs,charge,px,py,pz,d0);
1086
1087 Double_t cosThetaStar = 0.;
1088 Double_t cosThetaStarD0 = 0.;
1089 Double_t cosThetaStarD0bar = 0.;
1090 cosThetaStarD0 = decay->CosThetaStar(1,421,211,321);
1091 cosThetaStarD0bar = decay->CosThetaStar(0,421,321,211);
1092 if (mcPart->GetPdgCode() == 421){ // D0
1093 AliDebug(3, Form("D0, with pdgprong0 = %d, pdgprong1 = %d",mcPartDaughter0->GetPdgCode(),mcPartDaughter1->GetPdgCode()));
1094 cosThetaStar = cosThetaStarD0;
1095 }
1096 else if (mcPart->GetPdgCode() == -421){ // D0bar{
1097 AliDebug(3, Form("D0bar, with pdgprong0 = %d, pdgprong1 = %d",mcPartDaughter0->GetPdgCode(),mcPartDaughter1->GetPdgCode()));
1098 cosThetaStar = cosThetaStarD0bar;
1099 }
1100 else{
1101 AliWarning("There are problems!! particle was expected to be either a D0 or a D0bar, check...");
1102 return vectorMC;
1103 }
1104 if (cosThetaStar < -1 || cosThetaStar > 1) {
1105 AliWarning("Invalid value for cosine Theta star, returning");
1106 return isOk;
1107 }
1108
1109 // calculate cos(Theta*) according to the method implemented herein
1110
1111 Double_t cts = 9999.;
1112 cts = CosThetaStar(mcPart, mcPartDaughter0, mcPartDaughter1);
1113 if (cts < -1 || cts > 1) {
1114 AliWarning("Invalid value for cosine Theta star from AliCFHeavyFlavourTaskMultiVarMultiStep method");
1115 }
1116 if (TMath::Abs(cts - cosThetaStar)>0.001) {
1117 AliError(Form("cosThetaStar automatically calculated different from that manually calculated!!! cosThetaStar = %f, cosThetaStar = %f", cosThetaStar,cts));
1118 }
1119
1120 Double_t cT = decay->Ct(421);
1121
1122 // calculate cT from the method implemented herein
1123 Double_t cT1 = 0.;
1124 cT1 = CT(mcPart, mcPartDaughter0, mcPartDaughter1);
1125
1126 if (TMath::Abs(cT1 - cT)>0.001) {
1127 AliError(Form("cT automatically calculated different from that manually calculated!!! cT = %f, cT1 = %f",cT,cT1));
1128 }
1129
1130 // get the pT of the daughters
1131
1132 Double_t pTpi = 0.;
1133 Double_t pTK = 0.;
1134
1135 if (TMath::Abs(mcPartDaughter0->GetPdgCode()) == 211) {
1136 pTpi = mcPartDaughter0->Pt();
1137 pTK = mcPartDaughter1->Pt();
1138 }
1139 else {
1140 pTpi = mcPartDaughter1->Pt();
1141 pTK = mcPartDaughter0->Pt();
1142 }
1143
1144 vectorMC[0] = mcPart->Pt();
1145 vectorMC[1] = mcPart->Y() ;
1146 vectorMC[2] = cosThetaStar ;
1147 vectorMC[3] = pTpi ;
1148 vectorMC[4] = pTK ;
1149 vectorMC[5] = cT*1.E4 ; // in micron
1150 isOk = kTRUE;
1151 return isOk;
1152}
1153