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more codin violation fixes
[u/mrichter/AliRoot.git] / PWG3 / vertexingHF / AliCFHeavyFlavourTaskMultiVarMultiStep.cxx
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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>
29#include <TH1I.h>
30#include <TStyle.h>
31
32#include "AliCFHeavyFlavourTaskMultiVarMultiStep.h"
33#include "AliStack.h"
34#include "AliMCEvent.h"
35#include "AliCFManager.h"
36#include "AliCFContainer.h"
37#include "AliLog.h"
38#include "AliAODEvent.h"
39#include "AliAODRecoDecay.h"
40#include "AliAODRecoDecayHF.h"
41#include "AliAODRecoDecayHF2Prong.h"
42#include "AliAODMCParticle.h"
43
44//__________________________________________________________________________
45AliCFHeavyFlavourTaskMultiVarMultiStep::AliCFHeavyFlavourTaskMultiVarMultiStep() :
46 AliAnalysisTaskSE(),
47 fPDG(0),
48 fCFManager(0x0),
49 fHistEventsProcessed(0x0),
50 fCountMC(0),
51 fCountAcc(0),
52 fCountReco(0),
53 fCountRecoAcc(0),
54 fCountRecoITSClusters(0),
55 fCountRecoPPR(0),
56 fEvents(0),
57 fFillFromGenerated(kFALSE),
58 fMinITSClusters(5)
59{
60 //
61 //Default ctor
62 //
63}
64//___________________________________________________________________________
65AliCFHeavyFlavourTaskMultiVarMultiStep::AliCFHeavyFlavourTaskMultiVarMultiStep(const Char_t* name) :
66 AliAnalysisTaskSE(name),
67 fPDG(0),
68 fCFManager(0x0),
69 fHistEventsProcessed(0x0),
70 fCountMC(0),
71 fCountAcc(0),
72 fCountReco(0),
73 fCountRecoAcc(0),
74 fCountRecoITSClusters(0),
75 fCountRecoPPR(0),
76 fEvents(0),
77 fFillFromGenerated(kFALSE),
78 fMinITSClusters(5)
79{
80 //
81 // Constructor. Initialization of Inputs and Outputs
82 //
83 Info("AliCFHeavyFlavourTaskMultiVarMultiStep","Calling Constructor");
84 /*
85 DefineInput(0) and DefineOutput(0)
86 are taken care of by AliAnalysisTaskSE constructor
87 */
88 DefineOutput(1,TH1I::Class());
89 DefineOutput(2,AliCFContainer::Class());
90}
91
92//___________________________________________________________________________
93AliCFHeavyFlavourTaskMultiVarMultiStep& AliCFHeavyFlavourTaskMultiVarMultiStep::operator=(const AliCFHeavyFlavourTaskMultiVarMultiStep& c)
94{
95 //
96 // Assignment operator
97 //
98 if (this!=&c) {
99 AliAnalysisTaskSE::operator=(c) ;
100 fPDG = c.fPDG;
101 fCFManager = c.fCFManager;
102 fHistEventsProcessed = c.fHistEventsProcessed;
103 }
104 return *this;
105}
106
107//___________________________________________________________________________
108AliCFHeavyFlavourTaskMultiVarMultiStep::AliCFHeavyFlavourTaskMultiVarMultiStep(const AliCFHeavyFlavourTaskMultiVarMultiStep& c) :
109 AliAnalysisTaskSE(c),
110 fPDG(c.fPDG),
111 fCFManager(c.fCFManager),
112 fHistEventsProcessed(c.fHistEventsProcessed),
113 fCountMC(c.fCountMC),
114 fCountAcc(c.fCountAcc),
115 fCountReco(c.fCountReco),
116 fCountRecoAcc(c.fCountRecoAcc),
117 fCountRecoITSClusters(c.fCountRecoITSClusters),
118 fCountRecoPPR(c.fCountRecoPPR),
119 fEvents(c.fEvents),
120 fFillFromGenerated(c.fFillFromGenerated),
121 fMinITSClusters(c.fMinITSClusters)
122{
123 //
124 // Copy Constructor
125 //
126}
127
128//___________________________________________________________________________
129AliCFHeavyFlavourTaskMultiVarMultiStep::~AliCFHeavyFlavourTaskMultiVarMultiStep() {
130 //
131 //destructor
132 //
133 if (fCFManager) delete fCFManager ;
134 if (fHistEventsProcessed) delete fHistEventsProcessed ;
135}
136
137//_________________________________________________
138void AliCFHeavyFlavourTaskMultiVarMultiStep::UserExec(Option_t *)
139{
140 //
141 // Main loop function
142 //
143
144 if (fFillFromGenerated){
145 AliWarning("Flag to fill container with generated value ON ---> dca, d0pi, d0K, d0xd0, cosPointingAngle will be set as dummy!");
146 }
147
148 if (!fInputEvent) {
149 Error("UserExec","NO EVENT FOUND!");
150 return;
151 }
152
153 fEvents++;
154 if (fEvents%10000 ==0) AliInfo(Form("Event %d",fEvents));
155 AliAODEvent* aodEvent = dynamic_cast<AliAODEvent*>(fInputEvent);
156 fCFManager->SetEventInfo(aodEvent);
157
158 // MC-event selection
159 Double_t containerInput[11] ;
160
161 //loop on the MC event
162
163 TClonesArray* mcArray = dynamic_cast<TClonesArray*>(aodEvent->FindListObject(AliAODMCParticle::StdBranchName()));
164 if (!mcArray) AliError("Could not find Monte-Carlo in AOD");
165 Int_t icountMC = 0;
166 Int_t icountAcc = 0;
167 Int_t icountReco = 0;
168 Int_t icountRecoAcc = 0;
169 Int_t icountRecoITSClusters = 0;
170 Int_t icountRecoPPR = 0;
171
172 for (Int_t iPart=0; iPart<mcArray->GetEntriesFast(); iPart++) {
173 AliAODMCParticle* mcPart = dynamic_cast<AliAODMCParticle*>(mcArray->At(iPart));
174 if (!mcPart) {
175 AliWarning("Particle not found in tree, skipping");
176 continue;
177 }
178
179 // check the MC-level cuts
180 if (!fCFManager->CheckParticleCuts(0, mcPart)) continue; // 0 stands for MC level
181
182 // fill the container for Gen-level selection
183 Double_t vectorMC[6] = {9999.,9999.,9999.,9999.,9999.,9999.};
184 if (GetGeneratedValuesFromMCParticle(mcPart, mcArray, vectorMC)){
185 containerInput[0] = vectorMC[0];
186 containerInput[1] = vectorMC[1] ;
187 containerInput[2] = vectorMC[2] ;
188 containerInput[3] = vectorMC[3] ;
189 containerInput[4] = vectorMC[4] ;
190 containerInput[5] = vectorMC[5] ; // in micron
191 containerInput[6] = 0.; // dummy value, meaningless in MC, in micron
192 containerInput[7] = 0.; // dummy value, meaningless in MC, in micron
193 containerInput[8] = 0.; // dummy value, meaningless in MC, in micron
194 containerInput[9] = -100000.; // dummy value, meaningless in MC, in micron^2
195 containerInput[10] = 1.01; // dummy value, meaningless in MC
196 fCFManager->GetParticleContainer()->Fill(containerInput,kStepGenerated);
197 icountMC++;
198
199 // check the MC-Acceptance level cuts
200 // since standard CF functions are not applicable, using Kine Cuts on daughters
201
202 Int_t daughter0 = mcPart->GetDaughter(0);
203 Int_t daughter1 = mcPart->GetDaughter(1);
204 AliDebug(2, Form("daughter0 = %d and daughter1 = %d",daughter0,daughter1));
205 if (daughter0 == 0 || daughter1 == 0) {
206 AliDebug(2, "Error! the D0 MC doesn't have correct daughters!! But it should have, this check was already done...");
207 }
208 if (TMath::Abs(daughter1 - daughter0 != 1)) {
209 AliDebug(2, "The D0 MC doesn't come from a 2-prong decay, but it should be, this check was already done...");
210 }
211 AliAODMCParticle* mcPartDaughter0 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter0));
212 AliAODMCParticle* mcPartDaughter1 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter1));
213 if (!mcPartDaughter0 || !mcPartDaughter1) {
214 AliWarning("At least one Daughter Particle not found in tree, but it should be, this check was already done...");
215 }
216 Double_t eta0 = mcPartDaughter0->Eta();
217 Double_t eta1 = mcPartDaughter1->Eta();
218 Double_t y0 = mcPartDaughter0->Y();
219 Double_t y1 = mcPartDaughter1->Y();
220 Double_t pt0 = mcPartDaughter0->Pt();
221 Double_t pt1 = mcPartDaughter1->Pt();
222 AliDebug(2, Form("Daughter 0: eta = %f, y = %f, pt = %f", eta0, y0, pt0));
223 AliDebug(2, Form("Daughter 1: eta = %f, y = %f, pt = %f", eta1, y1, pt1));
224 Bool_t daught0inAcceptance = (TMath::Abs(eta0) < 0.9 && pt0 > 0.1);
225 Bool_t daught1inAcceptance = (TMath::Abs(eta1) < 0.9 && pt1 > 0.1);
226 if (daught0inAcceptance && daught1inAcceptance) {
227 // checking whether the cuts implemented in the CF are equivalent - simply a cross-check
228 AliDebug(2, "Daughter particles in acceptance");
229 if (!fCFManager->CheckParticleCuts(1, mcPartDaughter0)) {
230 AliInfo("Inconsistency with CF cut for daughter 0!");
231 }
232 if (!fCFManager->CheckParticleCuts(1, mcPartDaughter1)) {
233 AliInfo("Inconsistency with CF cut for daughter 1!");
234 }
235 fCFManager->GetParticleContainer()->Fill(containerInput,kStepAcceptance);
236 icountAcc++;
237 }
238 }
239 else {
240 AliDebug(3,"Problems in filling the container");
241 continue;
242 }
243 }
244
245 AliDebug(2, Form("Found %i MC particles that are D0!!",icountMC));
246 AliDebug(2, Form("Found %i MC particles that are D0 and satisfy Acc cuts!!",icountAcc));
247
248 // Now go to rec level
249 fCountMC += icountMC;
250 fCountAcc += icountAcc;
251
1e090d47 252 // AOD primary vertex
253 AliAODVertex *vtx1 = (AliAODVertex*)aodEvent->GetPrimaryVertex();
254
f5ec6c30 255 // load heavy flavour vertices
1e090d47 256 TClonesArray *arrayD0toKpi = (TClonesArray*)((aodEvent->GetList())->FindObject("D0toKpi"));
257 if (!arrayD0toKpi) AliError("Could not find array of HF vertices");
258 AliDebug(2, Form("Found %d vertices",arrayD0toKpi->GetEntriesFast()));
f5ec6c30 259
1e090d47 260 for (Int_t iD0toKpi = 0; iD0toKpi<arrayD0toKpi->GetEntriesFast(); iD0toKpi++) {
f5ec6c30 261
1e090d47 262 AliAODRecoDecayHF2Prong* d0tokpi = (AliAODRecoDecayHF2Prong*)arrayD0toKpi->At(iD0toKpi);
263 Bool_t unsetvtx=kFALSE;
264 if(!d0tokpi->GetOwnPrimaryVtx()) {
265 d0tokpi->SetOwnPrimaryVtx(vtx1); // needed to compute all variables
266 unsetvtx=kTRUE;
267 }
268
f5ec6c30 269 // find associated MC particle
1e090d47 270 Int_t mcLabel = d0tokpi->MatchToMC(421, mcArray) ;
f5ec6c30 271 if (mcLabel == -1)
272 {
273 AliDebug(2,"No MC particle found");
274 }
275 else {
276 AliAODMCParticle* mcVtxHF = (AliAODMCParticle*)mcArray->At(mcLabel);
277 if (!mcVtxHF) {
278 AliWarning("Could not find associated MC in AOD MC tree");
279 continue;
280 }
281
282 // check if associated MC v0 passes the cuts
283 if (!fCFManager->CheckParticleCuts(0 ,mcVtxHF)) { // 0 stands for MC
284 AliDebug(2, "Skipping the particles due to cuts");
285 continue;
286 }
287
288
289 // fill the container...
1e090d47 290 Double_t pt = d0tokpi->Pt();
291 Double_t rapidity = d0tokpi->YD0();
f5ec6c30 292
293 Double_t cosThetaStar = 9999.;
294 Double_t pTpi = 0.;
295 Double_t pTK = 0.;
1e090d47 296 Double_t dca = d0tokpi->GetDCA();
f5ec6c30 297 Double_t d0pi = 0.;
298 Double_t d0K = 0.;
1e090d47 299 Double_t d0xd0 = d0tokpi->Prodd0d0();
300 Double_t cosPointingAngle = d0tokpi->CosPointingAngle();
f5ec6c30 301 Int_t pdgCode = mcVtxHF->GetPdgCode();
302 if (pdgCode > 0){
1e090d47 303 cosThetaStar = d0tokpi->CosThetaStarD0();
304 pTpi = d0tokpi->PtProng(0);
305 pTK = d0tokpi->PtProng(1);
306 d0pi = d0tokpi->Getd0Prong(0);
307 d0K = d0tokpi->Getd0Prong(1);
f5ec6c30 308 }
309 else {
1e090d47 310 cosThetaStar = d0tokpi->CosThetaStarD0bar();
311 pTpi = d0tokpi->PtProng(1);
312 pTK = d0tokpi->PtProng(0);
313 d0pi = d0tokpi->Getd0Prong(1);
314 d0K = d0tokpi->Getd0Prong(0);
f5ec6c30 315 }
316
1e090d47 317 Double_t cT = d0tokpi->CtD0();
f5ec6c30 318
319 if (!fFillFromGenerated){
320 // ...either with reconstructed values....
321 containerInput[0] = pt;
322 containerInput[1] = rapidity;
323 containerInput[2] = cosThetaStar;
324 containerInput[3] = pTpi;
325 containerInput[4] = pTK;
326 containerInput[5] = cT*1.E4; // in micron
327 containerInput[6] = dca*1.E4; // in micron
328 containerInput[7] = d0pi*1.E4; // in micron
329 containerInput[8] = d0K*1.E4; // in micron
330 containerInput[9] = d0xd0*1.E8; // in micron^2
331 containerInput[10] = cosPointingAngle; // in micron
332 }
333 else {
334 // ... or with generated values
335 Double_t vectorMC[6] = {9999.,9999.,9999.,9999.,9999.,9999.};
336 if (GetGeneratedValuesFromMCParticle(mcVtxHF, mcArray, vectorMC)){
337 containerInput[0] = vectorMC[0];
338 containerInput[1] = vectorMC[1] ;
339 containerInput[2] = vectorMC[2] ;
340 containerInput[3] = vectorMC[3] ;
341 containerInput[4] = vectorMC[4] ;
342 containerInput[5] = vectorMC[5] ; // in micron
343 containerInput[6] = 0.; // dummy value, meaningless in MC, in micron
344 containerInput[7] = 0.; // dummy value, meaningless in MC, in micron
345 containerInput[8] = 0.; // dummy value, meaningless in MC, in micron
346 containerInput[9] = 100000.; // dummy value, meaningless in MC, in micron^2
347 containerInput[10] = 1.01; // dummy value, meaningless in MC
348 }
349 else {
350 AliDebug(3,"Problems in filling the container");
351 continue;
352 }
353 }
354 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]));
355 icountReco++;
356 fCFManager->GetParticleContainer()->Fill(containerInput,kStepReconstructed) ;
357
358 // cut in acceptance
1e090d47 359 Bool_t acceptanceProng0 = (TMath::Abs(d0tokpi->EtaProng(0))< 0.9 && d0tokpi->PtProng(0) > 0.1);
360 Bool_t acceptanceProng1 = (TMath::Abs(d0tokpi->EtaProng(1))< 0.9 && d0tokpi->PtProng(1) > 0.1);
f5ec6c30 361 if (acceptanceProng0 && acceptanceProng1) {
362 AliDebug(2,"D0 reco daughters in acceptance");
363 fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoAcceptance) ;
364 icountRecoAcc++;
365
366 // cut on the min n. of clusters in ITS
367 Int_t ncls0=0;
1e090d47 368 for(Int_t l=0;l<6;l++) if(TESTBIT(d0tokpi->GetITSClusterMap(),l)) ncls0++;
f5ec6c30 369 AliDebug(2, Form("n clusters = %d", ncls0));
370 if (ncls0 >= fMinITSClusters){
371 fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoITSClusters) ;
372 icountRecoITSClusters++;
373 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));
374
375 // PPR cuts
376 Double_t cuts[6];
377 if (pt <= 1){
378 cuts[0] = 400;
379 cuts[1] = 0.8;
380 cuts[2] = 0.5;
381 cuts[3] = 500;
382 cuts[4] = -20000;
383 cuts[5] = 0.5;
384 }
385 else if (pt > 1 && pt <= 2){
386 cuts[0] = 300;
387 cuts[1] = 0.8;
388 cuts[2] = 0.6;
389 cuts[3] = 500;
390 cuts[4] = -20000;
391 cuts[5] = 0.6;
392 }
393 else if (pt > 2 && pt <= 3){
394 cuts[0] = 200;
395 cuts[1] = 0.8;
396 cuts[2] = 0.7;
397 cuts[3] = 500;
398 cuts[4] = -20000;
399 cuts[5] = 0.8;
400 }
401 else if (pt > 3 && pt <= 5){
402 cuts[0] = 200;
403 cuts[1] = 0.8;
404 cuts[2] = 0.7;
405 cuts[3] = 500;
406 cuts[4] = -10000;
407 cuts[5] = 0.8;
408 }
409 else if (pt > 5){
410 cuts[0] = 200;
411 cuts[1] = 0.8;
412 cuts[2] = 0.7;
413 cuts[3] = 500;
414 cuts[4] = -5000;
415 cuts[5] = 0.8;
416 }
417 if (dca*1E4 < cuts[0]
418 && TMath::Abs(cosThetaStar) < cuts[1]
419 && pTpi > cuts[2]
420 && pTK > cuts[2]
421 && TMath::Abs(d0pi*1E4) < cuts[3]
422 && TMath::Abs(d0K*1E4) < cuts[3]
423 && d0xd0*1E8 < cuts[4]
424 && cosPointingAngle > cuts[5]
425 ){
426
427 AliDebug(2,"Particle passed PPR cuts");
428 fCFManager->GetParticleContainer()->Fill(containerInput,kStepRecoPPR) ;
429 icountRecoPPR++;
430 }
431 else{
432 AliDebug(2,"Particle skipped due to PPR cuts");
433 if (dca*1E4 > cuts[0]){
434 AliDebug(2,"Problems with dca");
435 }
436 if ( TMath::Abs(cosThetaStar) > cuts[1]){
437 AliDebug(2,"Problems with cosThetaStar");
438 }
439 if (pTpi < cuts[2]){
440 AliDebug(2,"Problems with pTpi");
441 }
442 if (pTK < cuts[2]){
443 AliDebug(2,"Problems with pTK");
444 }
445 if (TMath::Abs(d0pi*1E4) > cuts[3]){
446 AliDebug(2,"Problems with d0pi");
447 }
448 if (TMath::Abs(d0K*1E4) > cuts[3]){
449 AliDebug(2,"Problems with d0K");
450 }
451 if (d0xd0*1E8 > cuts[4]){
452 AliDebug(2,"Problems with d0xd0");
453 }
454 if (cosPointingAngle < cuts[5]){
455 AliDebug(2,"Problems with cosPointingAngle");
456 }
457 }
458 }
459 }
460 }
1e090d47 461 if(unsetvtx) d0tokpi->UnsetOwnPrimaryVtx();
462 } // end loop on D0->Kpi
f5ec6c30 463
464 AliDebug(2, Form("Found %i Reco particles that are D0!!",icountReco));
465
466 fCountReco+= icountReco;
467 fCountRecoAcc+= icountRecoAcc;
468 fCountRecoITSClusters+= icountRecoITSClusters;
469 fCountRecoPPR+= icountRecoPPR;
470
471 fHistEventsProcessed->Fill(0);
472 /* PostData(0) is taken care of by AliAnalysisTaskSE */
473 PostData(1,fHistEventsProcessed) ;
474 PostData(2,fCFManager->GetParticleContainer()) ;
475}
476
477
478//___________________________________________________________________________
479void AliCFHeavyFlavourTaskMultiVarMultiStep::Terminate(Option_t*)
480{
481 // The Terminate() function is the last function to be called during
482 // a query. It always runs on the client, it can be used to present
483 // the results graphically or save the results to file.
484
485 Info("Terminate","");
486 AliAnalysisTaskSE::Terminate();
487
488 AliInfo(Form("Found %i MC particles that are D0 in MC, in %d events",fCountMC,fEvents));
489 AliInfo(Form("Found %i MC particles that are D0 in MC and satisfy Acc cuts, in %d events",fCountAcc,fEvents));
490 AliInfo(Form("Found %i reco D0 that are decaying in K+pi, in %d events",fCountReco,fEvents));
491 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));
492 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));
493 AliInfo(Form("Among the above, found %i reco D0 that are decaying in K+pi and satisfy PPR cuts, in %d events",fCountRecoPPR,fEvents));
494
495 // draw some example plots....
496
497 AliCFContainer *cont= dynamic_cast<AliCFContainer*> (GetOutputData(2));
498
499 // projecting the containers to obtain histograms
500 // first argument = variable, second argument = step
501
502 // MC-level
503 TH1D* h00 = cont->ShowProjection(0,0) ; // pt
504 TH1D* h10 = cont->ShowProjection(1,0) ; // rapidity
505 TH1D* h20 = cont->ShowProjection(2,0) ; // cosThetaStar
506 TH1D* h30 = cont->ShowProjection(3,0) ; // pTpi
507 TH1D* h40 = cont->ShowProjection(4,0) ; // pTK
508 TH1D* h50 = cont->ShowProjection(5,0) ; // cT
509 TH1D* h60 = cont->ShowProjection(6,0) ; // dca
510 TH1D* h70 = cont->ShowProjection(7,0) ; // d0pi
511 TH1D* h80 = cont->ShowProjection(8,0) ; // d0K
512 TH1D* h90 = cont->ShowProjection(9,0) ; // d0xd0
513 TH1D* h100 = cont->ShowProjection(10,0) ; // cosPointingAngle
514
515 // MC-Acceptance level
516 TH1D* h01 = cont->ShowProjection(0,1) ; // pt
517 TH1D* h11 = cont->ShowProjection(1,1) ; // rapidity
518 TH1D* h21 = cont->ShowProjection(2,1) ; // cosThetaStar
519 TH1D* h31 = cont->ShowProjection(3,1) ; // pTpi
520 TH1D* h41 = cont->ShowProjection(4,1) ; // pTK
521 TH1D* h51 = cont->ShowProjection(5,1) ; // cT
522 TH1D* h61 = cont->ShowProjection(6,1) ; // dca
523 TH1D* h71 = cont->ShowProjection(7,1) ; // d0pi
524 TH1D* h81 = cont->ShowProjection(8,1) ; // d0K
525 TH1D* h91 = cont->ShowProjection(9,1) ; // d0xd0
526 TH1D* h101 = cont->ShowProjection(10,1) ; // cosPointingAngle
527
528 // Reco-level
529 TH1D* h02 = cont->ShowProjection(0,2) ; // pt
530 TH1D* h12 = cont->ShowProjection(1,2) ; // rapidity
531 TH1D* h22 = cont->ShowProjection(2,2) ; // cosThetaStar
532 TH1D* h32 = cont->ShowProjection(3,2) ; // pTpi
533 TH1D* h42 = cont->ShowProjection(4,2) ; // pTK
534 TH1D* h52 = cont->ShowProjection(5,2) ; // cT
535 TH1D* h62 = cont->ShowProjection(6,2) ; // dca
536 TH1D* h72 = cont->ShowProjection(7,2) ; // d0pi
537 TH1D* h82 = cont->ShowProjection(8,2) ; // d0K
538 TH1D* h92 = cont->ShowProjection(9,2) ; // d0xd0
539 TH1D* h102 = cont->ShowProjection(10,2) ; // cosPointingAngle
540
541 h00->SetTitle("pT_D0 (GeV/c)");
542 h10->SetTitle("rapidity");
543 h20->SetTitle("cosThetaStar");
544 h30->SetTitle("pT_pi (GeV/c)");
545 h40->SetTitle("pT_K (Gev/c)");
546 h50->SetTitle("cT (#mum)");
547 h60->SetTitle("dca (#mum)");
548 h70->SetTitle("d0_pi (#mum)");
549 h80->SetTitle("d0_K (#mum)");
550 h90->SetTitle("d0xd0 (#mum^2)");
551 h100->SetTitle("cosPointingAngle");
552
553 h00->GetXaxis()->SetTitle("pT_D0 (GeV/c)");
554 h10->GetXaxis()->SetTitle("rapidity");
555 h20->GetXaxis()->SetTitle("cosThetaStar");
556 h30->GetXaxis()->SetTitle("pT_pi (GeV/c)");
557 h40->GetXaxis()->SetTitle("pT_K (Gev/c)");
558 h50->GetXaxis()->SetTitle("cT (#mum)");
559 h60->GetXaxis()->SetTitle("dca (#mum)");
560 h70->GetXaxis()->SetTitle("d0_pi (#mum)");
561 h80->GetXaxis()->SetTitle("d0_K (#mum)");
562 h90->GetXaxis()->SetTitle("d0xd0 (#mum^2)");
563 h100->GetXaxis()->SetTitle("cosPointingAngle");
564
565 h01->SetTitle("pT_D0 (GeV/c)");
566 h11->SetTitle("rapidity");
567 h21->SetTitle("cosThetaStar");
568 h31->SetTitle("pT_pi (GeV/c)");
569 h41->SetTitle("pT_K (Gev/c)");
570 h51->SetTitle("cT (#mum)");
571 h61->SetTitle("dca (#mum)");
572 h71->SetTitle("d0_pi (#mum)");
573 h81->SetTitle("d0_K (#mum)");
574 h91->SetTitle("d0xd0 (#mum^2)");
575 h101->SetTitle("cosPointingAngle");
576
577 h01->GetXaxis()->SetTitle("pT_D0 (GeV/c)");
578 h11->GetXaxis()->SetTitle("rapidity");
579 h21->GetXaxis()->SetTitle("cosThetaStar");
580 h31->GetXaxis()->SetTitle("pT_pi (GeV/c)");
581 h41->GetXaxis()->SetTitle("pT_K (Gev/c)");
582 h51->GetXaxis()->SetTitle("cT (#mum)");
583 h61->GetXaxis()->SetTitle("dca (#mum)");
584 h71->GetXaxis()->SetTitle("d0_pi (#mum)");
585 h81->GetXaxis()->SetTitle("d0_K (#mum)");
586 h91->GetXaxis()->SetTitle("d0xd0 (#mum^2)");
587 h101->GetXaxis()->SetTitle("cosPointingAngle");
588
589 h02->SetTitle("pT_D0 (GeV/c)");
590 h12->SetTitle("rapidity");
591 h22->SetTitle("cosThetaStar");
592 h32->SetTitle("pT_pi (GeV/c)");
593 h42->SetTitle("pT_K (Gev/c)");
594 h52->SetTitle("cT (#mum)");
595 h62->SetTitle("dca (#mum)");
596 h72->SetTitle("d0_pi (#mum)");
597 h82->SetTitle("d0_K (#mum)");
598 h92->SetTitle("d0xd0 (#mum^2)");
599 h102->SetTitle("cosPointingAngle");
600
601 h02->GetXaxis()->SetTitle("pT_D0 (GeV/c)");
602 h12->GetXaxis()->SetTitle("rapidity");
603 h22->GetXaxis()->SetTitle("cosThetaStar");
604 h32->GetXaxis()->SetTitle("pT_pi (GeV/c)");
605 h42->GetXaxis()->SetTitle("pT_K (Gev/c)");
606 h52->GetXaxis()->SetTitle("cT (#mum)");
607 h62->GetXaxis()->SetTitle("dca (#mum)");
608 h72->GetXaxis()->SetTitle("d0_pi (#mum)");
609 h82->GetXaxis()->SetTitle("d0_K (#mum)");
610 h92->GetXaxis()->SetTitle("d0xd0 (#mum^2)");
611 h102->GetXaxis()->SetTitle("cosPointingAngle");
612
613 Double_t max0 = h00->GetMaximum();
614 Double_t max1 = h10->GetMaximum();
615 Double_t max2 = h20->GetMaximum();
616 Double_t max3 = h30->GetMaximum();
617 Double_t max4 = h40->GetMaximum();
618 Double_t max5 = h50->GetMaximum();
619 Double_t max6 = h60->GetMaximum();
620 Double_t max7 = h70->GetMaximum();
621 Double_t max8 = h80->GetMaximum();
622 Double_t max9 = h90->GetMaximum();
623 Double_t max10 = h100->GetMaximum();
624
625 h00->GetYaxis()->SetRangeUser(0,max0*1.2);
626 h10->GetYaxis()->SetRangeUser(0,max1*1.2);
627 h20->GetYaxis()->SetRangeUser(0,max2*1.2);
628 h30->GetYaxis()->SetRangeUser(0,max3*1.2);
629 h40->GetYaxis()->SetRangeUser(0,max4*1.2);
630 h50->GetYaxis()->SetRangeUser(0,max5*1.2);
631 h60->GetYaxis()->SetRangeUser(0,max6*1.2);
632 h70->GetYaxis()->SetRangeUser(0,max7*1.2);
633 h80->GetYaxis()->SetRangeUser(0,max8*1.2);
634 h90->GetYaxis()->SetRangeUser(0,max9*1.2);
635 h100->GetYaxis()->SetRangeUser(0,max10*1.2);
636
637 h01->GetYaxis()->SetRangeUser(0,max0*1.2);
638 h11->GetYaxis()->SetRangeUser(0,max1*1.2);
639 h21->GetYaxis()->SetRangeUser(0,max2*1.2);
640 h31->GetYaxis()->SetRangeUser(0,max3*1.2);
641 h41->GetYaxis()->SetRangeUser(0,max4*1.2);
642 h51->GetYaxis()->SetRangeUser(0,max5*1.2);
643 h61->GetYaxis()->SetRangeUser(0,max6*1.2);
644 h71->GetYaxis()->SetRangeUser(0,max7*1.2);
645 h81->GetYaxis()->SetRangeUser(0,max8*1.2);
646 h91->GetYaxis()->SetRangeUser(0,max9*1.2);
647 h101->GetYaxis()->SetRangeUser(0,max10*1.2);
648
649 h00->SetMarkerStyle(20);
650 h10->SetMarkerStyle(24);
651 h20->SetMarkerStyle(21);
652 h30->SetMarkerStyle(25);
653 h40->SetMarkerStyle(27);
654 h50->SetMarkerStyle(28);
655 h60->SetMarkerStyle(20);
656 h70->SetMarkerStyle(24);
657 h80->SetMarkerStyle(21);
658 h90->SetMarkerStyle(25);
659 h100->SetMarkerStyle(27);
660
661 h00->SetMarkerColor(2);
662 h10->SetMarkerColor(2);
663 h20->SetMarkerColor(2);
664 h30->SetMarkerColor(2);
665 h40->SetMarkerColor(2);
666 h50->SetMarkerColor(2);
667 h60->SetMarkerColor(2);
668 h70->SetMarkerColor(2);
669 h80->SetMarkerColor(2);
670 h90->SetMarkerColor(2);
671 h100->SetMarkerColor(2);
672
673 h01->SetMarkerStyle(20) ;
674 h11->SetMarkerStyle(24) ;
675 h21->SetMarkerStyle(21) ;
676 h31->SetMarkerStyle(25) ;
677 h41->SetMarkerStyle(27) ;
678 h51->SetMarkerStyle(28) ;
679 h61->SetMarkerStyle(20);
680 h71->SetMarkerStyle(24);
681 h81->SetMarkerStyle(21);
682 h91->SetMarkerStyle(25);
683 h101->SetMarkerStyle(27);
684
685 h01->SetMarkerColor(8);
686 h11->SetMarkerColor(8);
687 h21->SetMarkerColor(8);
688 h31->SetMarkerColor(8);
689 h41->SetMarkerColor(8);
690 h51->SetMarkerColor(8);
691 h61->SetMarkerColor(8);
692 h71->SetMarkerColor(8);
693 h81->SetMarkerColor(8);
694 h91->SetMarkerColor(8);
695 h101->SetMarkerColor(8);
696
697 h02->SetMarkerStyle(20) ;
698 h12->SetMarkerStyle(24) ;
699 h22->SetMarkerStyle(21) ;
700 h32->SetMarkerStyle(25) ;
701 h42->SetMarkerStyle(27) ;
702 h52->SetMarkerStyle(28) ;
703 h62->SetMarkerStyle(20);
704 h72->SetMarkerStyle(24);
705 h82->SetMarkerStyle(21);
706 h92->SetMarkerStyle(25);
707 h102->SetMarkerStyle(27);
708
709 h02->SetMarkerColor(4);
710 h12->SetMarkerColor(4);
711 h22->SetMarkerColor(4);
712 h32->SetMarkerColor(4);
713 h42->SetMarkerColor(4);
714 h52->SetMarkerColor(4);
715 h62->SetMarkerColor(4);
716 h72->SetMarkerColor(4);
717 h82->SetMarkerColor(4);
718 h92->SetMarkerColor(4);
719 h102->SetMarkerColor(4);
720
721 gStyle->SetCanvasColor(0);
722 gStyle->SetFrameFillColor(0);
723 gStyle->SetTitleFillColor(0);
724 gStyle->SetStatColor(0);
725
726 // drawing in 2 separate canvas for a matter of clearity
727 TCanvas * c1 =new TCanvas("c1","pT, rapidiy, cosThetaStar",1100,1600);
728 c1->Divide(3,3);
729
730 c1->cd(1);
731 h00->Draw("p");
732 c1->cd(1);
733 c1->cd(2);
734 h01->Draw("p");
735 c1->cd(2);
736 c1->cd(3);
737 h02->Draw("p");
738 c1->cd(3);
739 c1->cd(4);
740 h10->Draw("p");
741 c1->cd(4);
742 c1->cd(5);
743 h11->Draw("p");
744 c1->cd(5);
745 c1->cd(6);
746 h12->Draw("p");
747 c1->cd(6);
748 c1->cd(7);
749 h20->Draw("p");
750 c1->cd(7);
751 c1->cd(8);
752 h21->Draw("p");
753 c1->cd(8);
754 c1->cd(9);
755 h22->Draw("p");
756 c1->cd(9);
757 c1->cd();
758
759 TCanvas * c2 =new TCanvas("c2","pTpi, pTK, cT",1100,1600);
760 c2->Divide(3,3);
761 c2->cd(1);
762 h30->Draw("p");
763 c2->cd(1);
764 c2->cd(2);
765 h31->Draw("p");
766 c2->cd(2);
767 c2->cd(3);
768 h32->Draw("p");
769 c2->cd(3);
770 c2->cd(4);
771 h40->Draw("p");
772 c2->cd(4);
773 c2->cd(5);
774 h41->Draw("p");
775 c2->cd(5);
776 c2->cd(6);
777 h42->Draw("p");
778 c2->cd(6);
779 c2->cd(7);
780 h50->Draw("p");
781 c2->cd(7);
782 c2->cd(8);
783 h51->Draw("p");
784 c2->cd(8);
785 c2->cd(9);
786 h52->Draw("p");
787 c2->cd(9);
788 c2->cd();
789
790 TCanvas * c3 =new TCanvas("c3","dca, d0pi, d0K",1100,1600);
791 c3->Divide(3,3);
792 c3->cd(1);
793 h60->Draw("p");
794 c3->cd(1);
795 c3->cd(2);
796 h61->Draw("p");
797 c3->cd(2);
798 c3->cd(3);
799 h62->Draw("p");
800 c3->cd(3);
801 c3->cd(4);
802 h70->Draw("p");
803 c3->cd(4);
804 c3->cd(5);
805 h71->Draw("p");
806 c3->cd(5);
807 c3->cd(6);
808 h72->Draw("p");
809 c3->cd(6);
810 c3->cd(7);
811 h80->Draw("p");
812 c3->cd(7);
813 c3->cd(8);
814 h81->Draw("p");
815 c3->cd(8);
816 c3->cd(9);
817 h82->Draw("p");
818 c3->cd(9);
819 c3->cd();
820
821 TCanvas * c4 =new TCanvas("c4","d0xd0, cosPointingAngle",1100,770);
822 c4->Divide(3,2);
823 c4->cd(1);
824 h90->Draw("p");
825 c4->cd(1);
826 c4->cd(2);
827 h91->Draw("p");
828 c4->cd(2);
829 c4->cd(3);
830 h92->Draw("p");
831 c4->cd(3);
832 c4->cd(4);
833 h100->Draw("p");
834 c4->cd(4);
835 c4->cd(5);
836 h101->Draw("p");
837 c4->cd(5);
838 c4->cd(6);
839 h102->Draw("p");
840 c4->cd(6);
841 c4->cd();
842
843 /*
844 c1->SaveAs("Plots/pT_rapidity_cosThetaStar.eps");
845 c2->SaveAs("Plots/pTpi_pTK_cT.eps");
846 c3->SaveAs("Plots/dca_d0pi_d0TK.eps");
847 c4->SaveAs("Plots/d0xd0_cosPointingAngle.eps");
848
849 c1->SaveAs("Plots/pT_rapidity_cosThetaStar.gif");
850 c2->SaveAs("Plots/pTpi_pTK_cT.gif");
851 c3->SaveAs("Plots/dca_d0pi_d0TK.gif");
852 c4->SaveAs("Plots/d0xd0_cosPointingAngle.gif");
853 */
854}
855
856//___________________________________________________________________________
857void AliCFHeavyFlavourTaskMultiVarMultiStep::UserCreateOutputObjects() {
858 //HERE ONE CAN CREATE OUTPUT OBJECTS, IN PARTICULAR IF THE OBJECT PARAMETERS DON'T NEED
859 //TO BE SET BEFORE THE EXECUTION OF THE TASK
860 //
861 Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
862
863 //slot #1
864 OpenFile(1);
865 fHistEventsProcessed = new TH1I("fHistEventsProcessed","",1,0,1) ;
866}
867
868//___________________________________________________________________________
869Double_t AliCFHeavyFlavourTaskMultiVarMultiStep::CosThetaStar(AliAODMCParticle* mcPart, AliAODMCParticle* mcPartDaughter0, AliAODMCParticle* mcPartDaughter1) const {
870
871 //
872 // to calculate cos(ThetaStar) for generated particle
873 // using the K, since mcPartDaughter0 and mcPartDaughter1 always correspond to K and pi respectively
874 // (see where the function is called)
875 //
876
877 Int_t pdgvtx = mcPart->GetPdgCode();
878 /* if (pdgvtx > 0) { // setting as the first daughter always the kaon, to be used to calculate cos(ThetaStar)
879 Int_t pdgprong0 = TMath::Abs(mcPartDaughter0->GetPdgCode());
880 Int_t pdgprong1 = TMath::Abs(mcPartDaughter1->GetPdgCode());
881 AliInfo(Form("D0, with pdgprong0 = %d, pdgprong1 = %d",pdgprong0,pdgprong1));
882 AliDebug(2,"This is a D0");
883 AliAODMCParticle* mcPartdummy = mcPartDaughter0;
884 mcPartDaughter0 = mcPartDaughter1;
885 mcPartDaughter1 = mcPartdummy;
886 }
887 else{
888 AliInfo("D0bar");
889 }
890 */
891 Int_t pdgprong0 = TMath::Abs(mcPartDaughter0->GetPdgCode());
892 Int_t pdgprong1 = TMath::Abs(mcPartDaughter1->GetPdgCode());
893 if (pdgvtx > 0) { // setting as the first daughter always the kaon, to be used to calculate cos(ThetaStar)
894 AliDebug(2,"D0");
895 }
896 else{
897 AliDebug(2,"D0bar");
898 }
899 if (pdgprong0 == 211){
900 AliDebug(2,Form("pdgprong0 = %d, pdgprong1 = %d, switching...",pdgprong0,pdgprong1));
901 AliAODMCParticle* mcPartdummy = mcPartDaughter0;
902 mcPartDaughter0 = mcPartDaughter1;
903 mcPartDaughter1 = mcPartdummy;
904 pdgprong0 = TMath::Abs(mcPartDaughter0->GetPdgCode());
905 pdgprong1 = TMath::Abs(mcPartDaughter1->GetPdgCode());
906 }
907
908 AliDebug(2,Form("After checking, pdgprong0 = %d, pdgprong1 = %d",pdgprong0,pdgprong1));
909 Double_t massvtx = TDatabasePDG::Instance()->GetParticle(TMath::Abs(pdgvtx))->Mass();
910 Double_t massp[2];
911 massp[0] = TDatabasePDG::Instance()->GetParticle(pdgprong0)->Mass();
912 massp[1] = TDatabasePDG::Instance()->GetParticle(pdgprong1)->Mass();
913
914 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);
915
916 Double_t px = mcPartDaughter0->Px()+mcPartDaughter1->Px();
917 Double_t py = mcPartDaughter0->Py()+mcPartDaughter1->Py();
918 Double_t pz = mcPartDaughter0->Pz()+mcPartDaughter1->Pz();
919 Double_t p = TMath::Sqrt(px*px+py*py+pz*pz);
920 Double_t e = TMath::Sqrt(massvtx*massvtx+p*p);
921 Double_t beta = p/e;
922 Double_t gamma = e/massvtx;
923 TVector3 mom(mcPartDaughter0->Px(),mcPartDaughter0->Py(),mcPartDaughter0->Pz());
924 TVector3 momTot(mcPartDaughter0->Px()+mcPartDaughter1->Px(),mcPartDaughter0->Py()+mcPartDaughter1->Py(),mcPartDaughter0->Pz()+mcPartDaughter1->Pz());
925
926 Double_t qlprong = mom.Dot(momTot)/momTot.Mag(); // analog to AliAODRecoDecay::QlProng(0)
927
928 AliDebug(2,Form("pStar = %f, beta = %f, gamma = %f, qlprong = %f, massp[0] = %f", pStar, beta, gamma, qlprong, massp[0]));
929 Double_t cts = (qlprong/gamma-beta*TMath::Sqrt(pStar*pStar+massp[0]*massp[0]))/pStar;
930 AliDebug(2,Form("cts = %f", cts));
931 return cts;
932}
933//___________________________________________________________________________
934Double_t AliCFHeavyFlavourTaskMultiVarMultiStep::CT(AliAODMCParticle* mcPart, AliAODMCParticle* mcPartDaughter0, AliAODMCParticle* mcPartDaughter1) const {
935
936 //
937 // to calculate cT for generated particle
938 //
939
940 Double_t xmcPart[3] = {0,0,0};
941 Double_t xdaughter0[3] = {0,0,0};
942 Double_t xdaughter1[3] = {0,0,0};
943 mcPart->XvYvZv(xmcPart); // cm
944 mcPartDaughter0->XvYvZv(xdaughter0); // cm
945 mcPartDaughter1->XvYvZv(xdaughter1); //cm
946 Double_t prodVtxD0 = TMath::Sqrt(xmcPart[0]*xmcPart[0]+
947 xmcPart[1]*xmcPart[1]+
948 xmcPart[2]*xmcPart[2]);
949 Double_t prodVtxDaughter0 = TMath::Sqrt(xdaughter0[0]*xdaughter0[0]+
950 xdaughter0[1]*xdaughter0[1]+
951 xdaughter0[2]*xdaughter0[2]);
952 Double_t prodVtxDaughter1 = TMath::Sqrt(xdaughter1[0]*xdaughter1[0]+
953 xdaughter1[1]*xdaughter1[1]+
954 xdaughter1[2]*xdaughter1[2]);
955
956 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));
957 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));
958 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));
959
960 Double_t cT0 = TMath::Sqrt((xdaughter0[0]-xmcPart[0])*(xdaughter0[0]-xmcPart[0])+
961 (xdaughter0[1]-xmcPart[1])*(xdaughter0[1]-xmcPart[1])+
962 (xdaughter0[2]-xmcPart[2])*(xdaughter0[2]-xmcPart[2]));
963
964 Double_t cT1 = TMath::Sqrt((xdaughter1[0]-xmcPart[0])*(xdaughter1[0]-xmcPart[0])+
965 (xdaughter1[1]-xmcPart[1])*(xdaughter1[1]-xmcPart[1])+
966 (xdaughter1[2]-xmcPart[2])*(xdaughter1[2]-xmcPart[2]));
967
968 if (cT0 != cT1) {
969 AliWarning("cT from daughter 0 different from cT from daughter 1! Using cT from daughter 0, but PLEASE, CHECK....");
970 }
971
972 // calculating cT from cT0
973
974 Double_t mass = TDatabasePDG::Instance()->GetParticle(mcPart->GetPdgCode())->Mass(); // mcPart->GetPdgCode() should return +/- 421 for the D0/D0bar
975 Double_t p = mcPart-> P();
976 Double_t cT = cT0*mass/p;
977 AliDebug(2, Form("cT from daughter 0 = %f (micron)", cT0*1E4));
978 AliDebug(2, Form("cT from daughter 1 = %f (micron)", cT1*1E4));
979 AliDebug(2, Form("cT (with mass = %f and p = %f) = %f (micron)", mass, p, cT*1E4));
980 return cT;
981}
982//________________________________________________________________________________
983Bool_t AliCFHeavyFlavourTaskMultiVarMultiStep::GetGeneratedValuesFromMCParticle(AliAODMCParticle* mcPart, TClonesArray* mcArray, Double_t* vectorMC) const {
984
985 //
986 // collecting all the necessary info (pt, y, cosThetaStar, ptPi, ptKa, cT) from MC particle
987 //
988
989 Bool_t isOk = kFALSE;
990
991 // check whether the D0 decays in pi+K
992 // to be added!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
993 // could use a cut in the CF, but not clear how to define a TDecayChannel
994 // implemented for the time being as a cut on the number of daughters - see later when
995 // getting the daughters
996
997 // getting the daughters
998 Int_t daughter0 = mcPart->GetDaughter(0);
999 Int_t daughter1 = mcPart->GetDaughter(1);
1000 AliDebug(2, Form("daughter0 = %d and daughter1 = %d",daughter0,daughter1));
1001 if (daughter0 == 0 || daughter1 == 0) {
1002 AliDebug(2, "Error! the D0 MC doesn't have correct daughters!!");
1003 return isOk;
1004 }
1005 if (TMath::Abs(daughter1 - daughter0 != 1)) {
1006 AliDebug(2, "The D0 MC doesn't come from a 2-prong decay, skipping!!");
1007 return isOk;
1008 }
1009 AliAODMCParticle* mcPartDaughter0 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter0));
1010 AliAODMCParticle* mcPartDaughter1 = dynamic_cast<AliAODMCParticle*>(mcArray->At(daughter1));
1011 if (!mcPartDaughter0 || !mcPartDaughter1) {
1012 AliWarning("At least one Daughter Particle not found in tree, skipping");
1013 return isOk;
1014 }
1015
1016 Double_t vtx1[3] = {0,0,0}; // primary vertex
1017 Double_t vtx2daughter0[3] = {0,0,0}; // secondary vertex from daughter 0
1018 Double_t vtx2daughter1[3] = {0,0,0}; // secondary vertex from daughter 1
1019 mcPart->XvYvZv(vtx1); // cm
1020 // getting vertex from daughters
1021 mcPartDaughter0->XvYvZv(vtx2daughter0); // cm
1022 mcPartDaughter1->XvYvZv(vtx2daughter1); //cm
1023 if (vtx2daughter0[0] != vtx2daughter1[0] && vtx2daughter0[1] != vtx2daughter1[1] && vtx2daughter0[2] != vtx2daughter1[2]) {
1024 AliError("Daughters have different secondary vertex, skipping the track");
1025 return isOk;
1026 }
1027 Int_t nprongs = 2;
1028 Short_t charge = 0;
1029 // always instantiate the AliAODRecoDecay with the positive daughter first, the negative second
1030 AliAODMCParticle* positiveDaugh = mcPartDaughter0;
1031 AliAODMCParticle* negativeDaugh = mcPartDaughter1;
1032 if (mcPartDaughter0->GetPdgCode()<0 && mcPartDaughter1->GetPdgCode()>0){
1033 // inverting in case the positive daughter is the second one
1034 positiveDaugh = mcPartDaughter1;
1035 negativeDaugh = mcPartDaughter0;
1036 }
1037 // getting the momentum from the daughters
1038 Double_t px[2] = {positiveDaugh->Px(), negativeDaugh->Px()};
1039 Double_t py[2] = {positiveDaugh->Py(), negativeDaugh->Py()};
1040 Double_t pz[2] = {positiveDaugh->Pz(), negativeDaugh->Pz()};
1041
1042 Double_t d0[2] = {0.,0.};
1043
1044 AliAODRecoDecayHF* decay = new AliAODRecoDecayHF(vtx1,vtx2daughter0,nprongs,charge,px,py,pz,d0);
1045
1046 Double_t cosThetaStar = 0.;
1047 Double_t cosThetaStarD0 = 0.;
1048 Double_t cosThetaStarD0bar = 0.;
1049 cosThetaStarD0 = decay->CosThetaStar(1,421,211,321);
1050 cosThetaStarD0bar = decay->CosThetaStar(0,421,321,211);
1051 if (mcPart->GetPdgCode() == 421){ // D0
1052 AliDebug(3, Form("D0, with pdgprong0 = %d, pdgprong1 = %d",mcPartDaughter0->GetPdgCode(),mcPartDaughter1->GetPdgCode()));
1053 cosThetaStar = cosThetaStarD0;
1054 }
1055 else if (mcPart->GetPdgCode() == -421){ // D0bar{
1056 AliDebug(3, Form("D0bar, with pdgprong0 = %d, pdgprong1 = %d",mcPartDaughter0->GetPdgCode(),mcPartDaughter1->GetPdgCode()));
1057 cosThetaStar = cosThetaStarD0bar;
1058 }
1059 else{
1060 AliWarning("There are problems!! particle was expected to be either a D0 or a D0bar, check...");
1061 return vectorMC;
1062 }
1063 if (cosThetaStar < -1 || cosThetaStar > 1) {
1064 AliWarning("Invalid value for cosine Theta star, returning");
1065 return isOk;
1066 }
1067
1068 // calculate cos(Theta*) according to the method implemented herein
1069
1070 Double_t cts = 9999.;
1071 cts = CosThetaStar(mcPart, mcPartDaughter0, mcPartDaughter1);
1072 if (cts < -1 || cts > 1) {
1073 AliWarning("Invalid value for cosine Theta star from AliCFHeavyFlavourTaskMultiVarMultiStep method");
1074 }
1075 if (TMath::Abs(cts - cosThetaStar)>0.001) {
1076 AliError(Form("cosThetaStar automatically calculated different from that manually calculated!!! cosThetaStar = %f, cosThetaStar = %f", cosThetaStar,cts));
1077 }
1078
1079 Double_t cT = decay->Ct(421);
1080
1081 // calculate cT from the method implemented herein
1082 Double_t cT1 = 0.;
1083 cT1 = CT(mcPart, mcPartDaughter0, mcPartDaughter1);
1084
1085 if (TMath::Abs(cT1 - cT)>0.001) {
1086 AliError(Form("cT automatically calculated different from that manually calculated!!! cT = %f, cT1 = %f",cT,cT1));
1087 }
1088
1089 // get the pT of the daughters
1090
1091 Double_t pTpi = 0.;
1092 Double_t pTK = 0.;
1093
1094 if (TMath::Abs(mcPartDaughter0->GetPdgCode()) == 211) {
1095 pTpi = mcPartDaughter0->Pt();
1096 pTK = mcPartDaughter1->Pt();
1097 }
1098 else {
1099 pTpi = mcPartDaughter1->Pt();
1100 pTK = mcPartDaughter0->Pt();
1101 }
1102
1103 vectorMC[0] = mcPart->Pt();
1104 vectorMC[1] = mcPart->Y() ;
1105 vectorMC[2] = cosThetaStar ;
1106 vectorMC[3] = pTpi ;
1107 vectorMC[4] = pTK ;
1108 vectorMC[5] = cT*1.E4 ; // in micron
1109 isOk = kTRUE;
1110 return isOk;
1111}
1112