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043062fe | 1 | /************************************************************************** |
2 | * Copyright(c) 2007-2011, 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 | ||
7b45817b | 16 | /* $Id$ */ |
043062fe | 17 | |
18 | /////////////////////////////////////////////////////////////////// | |
19 | // // | |
20 | // Class to compute variables for correction framework // | |
21 | // for 3-body decays of D mesons (D+, Ds, Lc) // | |
22 | // in bins of cut variables // | |
23 | // Origin: Francesco Prino (prino@to.infn.it) // | |
24 | // Renu Bala (bala@to.infn.it) // | |
25 | // // | |
26 | /////////////////////////////////////////////////////////////////// | |
27 | ||
28 | #include "AliAODMCParticle.h" | |
29 | #include "AliAODEvent.h" | |
30 | #include "TClonesArray.h" | |
31 | #include "AliCFVertexingHF.h" | |
32 | #include "AliESDtrack.h" | |
33 | #include "TDatabasePDG.h" | |
34 | ||
35 | #include "AliCFVertexingHF3Prong.h" | |
36 | #include "AliCFContainer.h" | |
37 | ||
38 | ClassImp(AliCFVertexingHF3Prong) | |
39 | ||
40 | ||
41 | //_________________________________________ | |
42 | AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(Int_t decay): | |
43 | AliCFVertexingHF(), | |
44 | fDecay(decay) | |
45 | { | |
46 | // | |
47 | SetNProngs(3); | |
2bf2e62b | 48 | |
49 | fPtAccCut=new Float_t[fProngs]; | |
50 | fEtaAccCut=new Float_t[fProngs]; | |
51 | for(Int_t iP=0; iP<fProngs; iP++){ | |
52 | fPtAccCut[iP]=0.1; | |
53 | fEtaAccCut[iP]=0.9; | |
54 | } | |
55 | ||
043062fe | 56 | } |
57 | //_________________________________________ | |
58 | AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(TClonesArray *mcArray, UShort_t originDselection, Int_t decay): | |
59 | AliCFVertexingHF(mcArray, originDselection), | |
60 | fDecay(decay) | |
61 | ||
62 | { | |
63 | // | |
64 | SetNProngs(3); | |
2bf2e62b | 65 | fPtAccCut=new Float_t[fProngs]; |
66 | fEtaAccCut=new Float_t[fProngs]; | |
67 | for(Int_t iP=0; iP<fProngs; iP++){ | |
68 | fPtAccCut[iP]=0.1; | |
69 | fEtaAccCut[iP]=0.9; | |
70 | } | |
043062fe | 71 | } |
72 | ||
73 | ||
74 | //_____________________________________ | |
75 | AliCFVertexingHF3Prong& AliCFVertexingHF3Prong::operator=(const AliCFVertexingHF3Prong& c){ | |
76 | // | |
77 | if (this != &c) { | |
78 | ||
79 | AliCFVertexingHF::operator=(c); | |
80 | ||
81 | } | |
82 | return *this; | |
83 | } | |
84 | ||
85 | //__________________________________________ | |
86 | Bool_t AliCFVertexingHF3Prong::SetRecoCandidateParam(AliAODRecoDecayHF *recoCand){ | |
87 | // Checks if candidate is signal and D meson is present in MC array | |
88 | ||
89 | Bool_t bSignAssoc = kFALSE; | |
90 | fRecoCandidate = recoCand; | |
91 | ||
92 | if (!fRecoCandidate) { | |
93 | AliError("fRecoCandidate not found, problem in assignement\n"); | |
94 | return bSignAssoc; | |
95 | } | |
96 | ||
97 | Int_t pdgCand = -1; | |
98 | Int_t pdgDaughter[3]={-1,-1,-1}; | |
99 | if(fDecay==kDplustoKpipi){ | |
100 | pdgCand=411; | |
101 | pdgDaughter[0]=321; | |
102 | pdgDaughter[1]=211; | |
103 | pdgDaughter[2]=211; | |
104 | }else if(fDecay==kDstoKKpi){ | |
105 | pdgCand=431; | |
106 | pdgDaughter[0]=321; | |
107 | pdgDaughter[1]=321; | |
108 | pdgDaughter[2]=211; | |
109 | }else if(fDecay==kLctopKpi){ | |
110 | AliError("LambdaC not yet implemented"); | |
111 | return bSignAssoc; | |
112 | }else{ | |
113 | AliError("WRONG DECAY SETTING"); | |
114 | return bSignAssoc; | |
115 | } | |
116 | ||
117 | Int_t mcLabel = fRecoCandidate->MatchToMC(pdgCand,fmcArray,3,pdgDaughter); | |
118 | if (mcLabel == -1) return bSignAssoc; | |
fbec9fa9 | 119 | |
120 | if ((fRecoCandidate->NumberOfFakeDaughters()>0)&&(fFakeSelection==1)) return bSignAssoc; | |
121 | if ((fRecoCandidate->NumberOfFakeDaughters()==0)&&(fFakeSelection==2)) return bSignAssoc; | |
122 | ||
043062fe | 123 | SetMCLabel(mcLabel); |
124 | fmcPartCandidate = dynamic_cast<AliAODMCParticle*>(fmcArray->At(fmcLabel)); | |
125 | ||
126 | if (!fmcPartCandidate){ | |
127 | AliDebug(3,"No part candidate"); | |
128 | return bSignAssoc; | |
129 | } | |
130 | ||
131 | bSignAssoc = kTRUE; | |
132 | return bSignAssoc; | |
133 | } | |
134 | ||
135 | //______________________________________________ | |
136 | Bool_t AliCFVertexingHF3Prong::GetGeneratedValuesFromMCParticle(Double_t* vectorMC) { | |
137 | // | |
138 | // collecting all the necessary info from MC particle and fill vectorMC: 12 variables | |
139 | // pt_D | |
140 | // y_D | |
141 | // phi_D | |
142 | // ctau | |
143 | // cos point | |
144 | // pt_1 | |
145 | // pt_2 | |
146 | // pt_3 | |
147 | // d0_1 | |
148 | // d0_2 | |
149 | // d0_3 | |
150 | // zPrimVert | |
b7af2639 | 151 | // centrality |
043062fe | 152 | |
153 | Bool_t bGenValues = kFALSE; | |
154 | ||
155 | Int_t pdgCand = -1; | |
156 | if(fDecay==kDplustoKpipi){ | |
157 | pdgCand=411; | |
158 | }else if(fDecay==kDstoKKpi){ | |
159 | pdgCand=431; | |
160 | }else if(fDecay==kLctopKpi){ | |
161 | AliError("LambdaC not yet implemented"); | |
162 | return bGenValues; | |
163 | }else{ | |
164 | AliError("WRONG DECAY SETTING"); | |
165 | return bGenValues; | |
166 | } | |
167 | ||
168 | Double_t vertD[3] = {0,0,0}; // D origin | |
169 | fmcPartCandidate->XvYvZv(vertD); // cm | |
170 | ||
171 | Int_t nprongs = 3; | |
172 | Int_t daughter[3]; | |
173 | Short_t charge = fmcPartCandidate->Charge(); | |
174 | ||
175 | // order the daughters as LS,OS,LS, e.g. D+ -> pi+ K- pi+ | |
176 | // the 2 LS are ordered so that in pos. 0 there is the one with lower label value | |
177 | Int_t index=0; | |
178 | Int_t nDauLS=0; | |
179 | Int_t nDauOS=0; | |
180 | ||
181 | ||
182 | Int_t nDau=fmcPartCandidate->GetNDaughters(); | |
183 | Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0); | |
184 | if(nDau==3){ | |
185 | for(Int_t iDau=0; iDau<3; iDau++){ | |
186 | Int_t ind = labelFirstDau+iDau; | |
187 | AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind)); | |
968b84b9 | 188 | if(!part){ |
189 | AliError("Daughter particle not found in MC array"); | |
190 | return bGenValues; | |
191 | } | |
043062fe | 192 | Short_t signDau=part->Charge(); |
193 | if(signDau==charge){ | |
194 | nDauLS++; | |
195 | daughter[index] = ind; | |
196 | index=2; | |
197 | }else{ | |
198 | daughter[1] = ind; | |
199 | nDauOS++; | |
200 | } | |
201 | } | |
202 | }else if(nDau==2){ | |
203 | for(Int_t iDau=0; iDau<2; iDau++){ | |
204 | Int_t ind = labelFirstDau+iDau; | |
205 | AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind)); | |
968b84b9 | 206 | if(!part){ |
207 | AliError("Daughter particle not found in MC array"); | |
208 | return bGenValues; | |
209 | } | |
043062fe | 210 | Int_t pdgCode=TMath::Abs(part->GetPdgCode()); |
211 | if(pdgCode==211 || pdgCode==321 || pdgCode==2212){ | |
212 | Short_t signDau=part->Charge(); | |
213 | if(signDau==charge){ | |
214 | nDauLS++; | |
215 | daughter[index] = ind; | |
216 | index=2; | |
217 | }else{ | |
218 | daughter[1] = ind; | |
219 | nDauOS++; | |
220 | } | |
221 | }else{ | |
222 | Int_t nDauRes=part->GetNDaughters(); | |
223 | if(nDauRes!=2){ | |
224 | AliError("Wrong resonant decay"); | |
225 | return bGenValues; | |
226 | } | |
227 | Int_t labelFirstDauRes = part->GetDaughter(0); | |
228 | for(Int_t iDauRes=0; iDauRes<2; iDauRes++){ | |
229 | Int_t indDR = labelFirstDauRes+iDauRes; | |
230 | AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR)); | |
968b84b9 | 231 | if(!partDR){ |
232 | AliError("Daughter particle not found in MC array"); | |
233 | return bGenValues; | |
234 | } | |
043062fe | 235 | Short_t signDau=partDR->Charge(); |
236 | if(signDau==charge){ | |
237 | nDauLS++; | |
238 | daughter[index] = ind; | |
239 | index=2; | |
240 | }else{ | |
241 | daughter[1] = ind; | |
242 | nDauOS++; | |
243 | } | |
244 | } | |
245 | } | |
246 | } | |
247 | }else{ | |
248 | AliError(Form("Wrong number of daughters %d",nDau)); | |
249 | return bGenValues; | |
250 | } | |
251 | ||
252 | if(nDauLS!=2 || nDauOS!=1){ | |
253 | AliError(Form("Wrong decay channel: LS and OS daughters not OK: %d %d",nDauLS,nDauOS)); | |
254 | return bGenValues; | |
255 | } | |
256 | if(daughter[0]>daughter[2]){ | |
257 | Int_t tmp=daughter[0]; | |
258 | daughter[0]=daughter[2]; | |
259 | daughter[2]=tmp; | |
260 | } | |
261 | ||
262 | // getting the momentum from the daughters and decay vertex | |
263 | Double_t px[3],py[3],pz[3],pt[3]; | |
264 | Double_t vertDec[3] = {0,0,0}; // decay vertex | |
265 | for(Int_t iDau=0; iDau<3; iDau++){ | |
266 | AliAODMCParticle* part=dynamic_cast<AliAODMCParticle*>(fmcArray->At(daughter[iDau])); | |
968b84b9 | 267 | if(!part){ |
268 | AliError("Daughter particle not found in MC array"); | |
269 | return bGenValues; | |
270 | } | |
043062fe | 271 | px[iDau]=part->Px(); |
272 | py[iDau]=part->Py(); | |
273 | pz[iDau]=part->Pz(); | |
274 | pt[iDau]=part->Pt(); | |
275 | if(iDau==0) part->XvYvZv(vertDec); | |
276 | } | |
277 | ||
278 | Double_t d0[3] = {0.,0.,0.}; // dummy values!!!! | |
279 | ||
280 | AliAODRecoDecayHF* decay = new AliAODRecoDecayHF(vertD,vertDec,nprongs,charge,px,py,pz,d0); | |
281 | Double_t cT = decay->Ct(pdgCand); | |
282 | ||
283 | vectorMC[0] = fmcPartCandidate->Pt(); | |
284 | vectorMC[1] = fmcPartCandidate->Y() ; | |
285 | vectorMC[2] = fmcPartCandidate->Phi(); | |
286 | vectorMC[3] = cT*1.E4 ; // in micron | |
287 | vectorMC[4] = 1.01; // cos pointing angle, dummy value, meaningless in MC | |
288 | vectorMC[5] = pt[0]; | |
289 | vectorMC[6] = pt[1]; | |
290 | vectorMC[7] = pt[2]; | |
291 | vectorMC[8] = 0.; // imppar0, dummy value, meaningless in MC | |
292 | vectorMC[9] = 0.; // imppar1, dummy value, meaningless in MC, in micron | |
293 | vectorMC[10] = 0.; // imppar2, dummy value, meaningless in MC, in micron | |
294 | vectorMC[11] = fzMCVertex; // z of reconstructed of primary vertex | |
b7af2639 | 295 | vectorMC[12] = fCentValue; // reconstructed centrality value |
296 | ||
043062fe | 297 | |
298 | bGenValues = kTRUE; | |
299 | return bGenValues; | |
300 | } | |
301 | ||
302 | ||
303 | //____________________________________________ | |
304 | Bool_t AliCFVertexingHF3Prong::GetRecoValuesFromCandidate(Double_t *vectorReco) const | |
305 | { | |
306 | // Fill vector (see above) with reconstructed quantities | |
307 | Bool_t bFillRecoValues=kFALSE; | |
308 | ||
309 | Int_t pdgCand = -1; | |
310 | if(fDecay==kDplustoKpipi){ | |
311 | pdgCand=411; | |
312 | }else if(fDecay==kDstoKKpi){ | |
313 | pdgCand=431; | |
314 | }else if(fDecay==kLctopKpi){ | |
315 | AliError("LambdaC not yet implemented"); | |
316 | return bFillRecoValues; | |
317 | }else{ | |
318 | AliError("WRONG DECAY SETTING"); | |
319 | return bFillRecoValues; | |
320 | } | |
321 | ||
322 | AliAODRecoDecayHF3Prong *decay3 = (AliAODRecoDecayHF3Prong*)fRecoCandidate; | |
323 | Short_t charge=decay3->Charge(); | |
324 | Double_t rapidity=decay3->Y(pdgCand); | |
325 | Double_t cT=decay3->Ct(pdgCand); | |
326 | Double_t pt = decay3->Pt(); | |
327 | Double_t cosPointingAngle = decay3->CosPointingAngle(); | |
328 | Double_t phi = decay3->Phi(); | |
329 | ||
330 | Int_t daughtSorted[3]; | |
331 | Int_t tmpIndex=0; | |
332 | Int_t nDauLS=0; | |
333 | Int_t nDauOS=0; | |
334 | for(Int_t iDau=0; iDau<3; iDau++){ | |
335 | AliAODTrack *trk = (AliAODTrack*)decay3->GetDaughter(iDau); | |
b7af2639 | 336 | Int_t label = TMath::Abs(trk->GetLabel()); |
043062fe | 337 | Short_t chargedau=trk->Charge(); |
338 | if(chargedau==charge){ | |
339 | daughtSorted[tmpIndex]=label; | |
340 | tmpIndex=2; | |
341 | nDauLS++; | |
342 | }else{ | |
343 | daughtSorted[1]=label; | |
344 | nDauOS++; | |
345 | } | |
346 | } | |
347 | ||
348 | if(nDauLS!=2 || nDauOS!=1){ | |
349 | AliError("Wrong decay channel: number of OS and LS tracks not OK"); | |
350 | return bFillRecoValues; | |
351 | } | |
352 | ||
353 | if(daughtSorted[0]>daughtSorted[2]){ | |
354 | Int_t tmp=daughtSorted[0]; | |
355 | daughtSorted[0]=daughtSorted[2]; | |
356 | daughtSorted[2]=tmp; | |
357 | } | |
358 | ||
359 | ||
360 | vectorReco[0] = pt; | |
361 | vectorReco[1] = rapidity; | |
362 | vectorReco[2] = phi; | |
363 | vectorReco[3] = cT*1.E4; // in micron | |
364 | vectorReco[4] = cosPointingAngle; // in micron | |
365 | vectorReco[5] = decay3->PtProng(daughtSorted[0]); | |
366 | vectorReco[6] = decay3->PtProng(daughtSorted[1]); | |
367 | vectorReco[7] = decay3->PtProng(daughtSorted[2]); | |
368 | vectorReco[8] = decay3->Getd0Prong(daughtSorted[0]); | |
369 | vectorReco[9] = decay3->Getd0Prong(daughtSorted[1]); | |
370 | vectorReco[10] = decay3->Getd0Prong(daughtSorted[2]); | |
371 | vectorReco[11] = fzPrimVertex; // z of reconstructed of primary vertex | |
b7af2639 | 372 | vectorReco[12] = fCentValue; //reconstructed centrality value |
373 | ||
374 | ||
043062fe | 375 | bFillRecoValues = kTRUE; |
376 | return bFillRecoValues; | |
377 | } | |
378 | ||
379 | ||
380 | //_____________________________________________________________ | |
381 | Bool_t AliCFVertexingHF3Prong::CheckMCChannelDecay() const | |
382 | { | |
383 | // Check the pdg codes of the daughters | |
384 | Bool_t checkCD = kFALSE; | |
385 | ||
386 | Int_t pdgCand = -1; | |
387 | Int_t pdgDaughter[3]={-1,-1,-1}; | |
388 | if(fDecay==kDplustoKpipi){ | |
389 | pdgCand=411; | |
390 | pdgDaughter[0]=321; | |
391 | pdgDaughter[1]=211; | |
392 | pdgDaughter[2]=211; | |
393 | }else if(fDecay==kDstoKKpi){ | |
394 | pdgCand=431; | |
395 | pdgDaughter[0]=321; | |
396 | pdgDaughter[1]=321; | |
397 | pdgDaughter[2]=211; | |
398 | }else if(fDecay==kLctopKpi){ | |
399 | AliError("LambdaC not yet implemented"); | |
400 | return checkCD; | |
401 | }else{ | |
402 | AliError("WRONG DECAY SETTING"); | |
403 | return checkCD; | |
404 | } | |
405 | ||
406 | ||
407 | Int_t daughter[3]; | |
408 | ||
409 | Int_t nDau=fmcPartCandidate->GetNDaughters(); | |
410 | Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0); | |
411 | if(nDau==3){ | |
412 | for(Int_t iDau=0; iDau<3; iDau++){ | |
413 | Int_t ind = labelFirstDau+iDau; | |
414 | AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind)); | |
968b84b9 | 415 | if(!part){ |
416 | AliError("Daughter particle not found in MC array"); | |
417 | return checkCD; | |
418 | } | |
043062fe | 419 | daughter[iDau]=TMath::Abs(part->GetPdgCode()); |
420 | } | |
421 | }else if(nDau==2){ | |
422 | Int_t nDauFound=0; | |
423 | for(Int_t iDau=0; iDau<2; iDau++){ | |
424 | Int_t ind = labelFirstDau+iDau; | |
425 | AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind)); | |
968b84b9 | 426 | if(!part){ |
427 | AliError("Daughter particle not found in MC array"); | |
428 | return checkCD; | |
429 | } | |
043062fe | 430 | Int_t pdgCode=TMath::Abs(part->GetPdgCode()); |
431 | if(pdgCode==211 || pdgCode==321 || pdgCode==2212){ | |
432 | if(nDauFound>=3) return checkCD; | |
433 | daughter[nDauFound]=pdgCode; | |
434 | nDauFound++; | |
435 | }else{ | |
436 | Int_t nDauRes=part->GetNDaughters(); | |
437 | if(nDauRes!=2) return checkCD; | |
438 | Int_t labelFirstDauRes = part->GetDaughter(0); | |
439 | for(Int_t iDauRes=0; iDauRes<2; iDauRes++){ | |
440 | Int_t indDR = labelFirstDauRes+iDauRes; | |
441 | AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR)); | |
968b84b9 | 442 | if(!partDR){ |
443 | AliError("Daughter particle not found in MC array"); | |
444 | return checkCD; | |
445 | } | |
043062fe | 446 | Int_t pdgCodeDR=TMath::Abs(partDR->GetPdgCode()); |
447 | if(nDauFound>=3) return checkCD; | |
448 | daughter[nDauFound]=pdgCodeDR; | |
449 | nDauFound++; | |
450 | } | |
451 | } | |
452 | } | |
453 | }else{ | |
454 | return checkCD; | |
455 | } | |
456 | for(Int_t iDau1=0; iDau1<3; iDau1++){ | |
457 | for(Int_t iDau2=iDau1; iDau2<3; iDau2++){ | |
458 | if(daughter[iDau1]<daughter[iDau2]){ | |
459 | Int_t tmp=daughter[iDau1]; | |
460 | daughter[iDau1]=daughter[iDau2]; | |
461 | daughter[iDau2]=tmp; | |
462 | } | |
463 | } | |
464 | } | |
465 | for(Int_t iDau=0; iDau<3; iDau++){ | |
466 | if(daughter[iDau]!=pdgDaughter[iDau]){ | |
467 | AliDebug(2, "Wrong decay channel from MC, skipping!!"); | |
468 | return checkCD; | |
469 | } | |
470 | } | |
471 | ||
472 | checkCD = kTRUE; | |
473 | return checkCD; | |
474 | ||
475 | } |