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45bc9115 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2010, 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 | // | |
18 | // Class for cuts on AOD reconstructed DStar->Kpipi | |
19 | // | |
20 | // Author: A.Grelli, alessandro.grelli@uu.nl | |
21 | ///////////////////////////////////////////////////////////// | |
22 | ||
23 | #include <TDatabasePDG.h> | |
24 | #include <Riostream.h> | |
25 | ||
26 | #include "AliAODRecoDecayHF2Prong.h" | |
27 | #include "AliAODRecoCascadeHF.h" | |
28 | #include "AliRDHFCutsD0toKpi.h" | |
29 | #include "AliRDHFCutsDStartoKpipi.h" | |
30 | #include "AliAODTrack.h" | |
31 | #include "AliESDtrack.h" | |
da6fefc3 | 32 | #include "AliAODVertex.h" |
33 | #include "AliESDVertex.h" | |
45bc9115 | 34 | |
ee1128c6 | 35 | |
36 | ||
45bc9115 | 37 | ClassImp(AliRDHFCutsDStartoKpipi) |
38 | ||
39 | //-------------------------------------------------------------------------- | |
da6fefc3 | 40 | AliRDHFCutsDStartoKpipi::AliRDHFCutsDStartoKpipi(const char* name) : |
41 | AliRDHFCuts(name), | |
42 | fTrackCutsSoftPi(0) | |
45bc9115 | 43 | { |
44 | // | |
45 | // Default Constructor | |
46 | // | |
47 | ||
48 | Int_t nvars=14; | |
49 | SetNVars(nvars); | |
50 | TString varNames[14]={ | |
51 | "inv. mass [GeV]", | |
52 | "dca [cm]", | |
53 | "cosThetaStar", | |
54 | "pTK [GeV/c]", | |
55 | "pTPi [GeV/c]", | |
56 | "d0K [cm]", | |
57 | "d0Pi [cm]", | |
58 | "d0d0 [cm^2]", | |
59 | "cosThetaPoint", | |
60 | "inv. mass half width of D* [GeV]", | |
61 | "half width of (M_Kpipi-M_D0) [GeV]", | |
62 | "PtMin of pi_s [GeV/c]", | |
63 | "PtMax of pi_s [GeV/c]", | |
64 | "theta, angle between the pi_s and decay plane of the D0 [rad]"}; | |
65 | Bool_t isUpperCut[14]={ | |
66 | kTRUE, | |
67 | kTRUE, | |
68 | kTRUE, | |
69 | kFALSE, | |
70 | kFALSE, | |
71 | kTRUE, | |
72 | kTRUE, | |
73 | kTRUE, | |
74 | kFALSE, | |
75 | kTRUE, | |
76 | kTRUE, | |
77 | kTRUE, | |
78 | kTRUE, | |
79 | kFALSE}; | |
80 | SetVarNames(nvars,varNames,isUpperCut); | |
81 | Bool_t forOpt[14]={ | |
82 | kFALSE, | |
83 | kTRUE, | |
84 | kTRUE, | |
85 | kFALSE, | |
86 | kFALSE, | |
87 | kFALSE, | |
88 | kFALSE, | |
89 | kTRUE, | |
90 | kTRUE, | |
91 | kFALSE, | |
92 | kTRUE, | |
93 | kFALSE, | |
94 | kFALSE, | |
95 | kFALSE}; | |
96 | SetVarsForOpt(5,forOpt); | |
97 | Float_t limits[2]={0,999999999.}; | |
98 | SetPtBins(2,limits); | |
99 | } | |
100 | //-------------------------------------------------------------------------- | |
101 | AliRDHFCutsDStartoKpipi::AliRDHFCutsDStartoKpipi(const AliRDHFCutsDStartoKpipi &source) : | |
da6fefc3 | 102 | AliRDHFCuts(source), |
103 | fTrackCutsSoftPi(0) | |
45bc9115 | 104 | { |
105 | // | |
106 | // Copy constructor | |
107 | // | |
ee1128c6 | 108 | |
da6fefc3 | 109 | if(source.GetTrackCutsSoftPi()) AddTrackCutsSoftPi(source.GetTrackCutsSoftPi()); |
ee1128c6 | 110 | |
45bc9115 | 111 | } |
112 | //-------------------------------------------------------------------------- | |
113 | AliRDHFCutsDStartoKpipi &AliRDHFCutsDStartoKpipi::operator=(const AliRDHFCutsDStartoKpipi &source) | |
114 | { | |
115 | // | |
116 | // assignment operator | |
117 | // | |
118 | if(&source == this) return *this; | |
119 | ||
120 | AliRDHFCuts::operator=(source); | |
121 | ||
da6fefc3 | 122 | if(source.GetTrackCutsSoftPi()) AddTrackCutsSoftPi(source.GetTrackCutsSoftPi()); |
45bc9115 | 123 | return *this; |
124 | } | |
125 | ||
126 | ||
127 | //--------------------------------------------------------------------------- | |
128 | void AliRDHFCutsDStartoKpipi::GetCutVarsForOpt(AliAODRecoDecayHF *d,Float_t *vars,Int_t nvars,Int_t *pdgdaughters) { | |
129 | // | |
130 | // Fills in vars the values of the variables | |
131 | // | |
132 | if(nvars!=fnVarsForOpt) { | |
133 | printf("AliRDHFCutsDStartoKpipi::GetCutsVarsForOpt: wrong number of variables\n"); | |
134 | return; | |
135 | } | |
136 | ||
137 | ||
138 | AliAODRecoCascadeHF* dstarD0pi = (AliAODRecoCascadeHF*)d; | |
139 | ||
140 | AliAODTrack *softPi = (AliAODTrack*)dstarD0pi->GetBachelor(); | |
141 | ||
142 | AliAODRecoDecayHF2Prong* dd = (AliAODRecoDecayHF2Prong*)dstarD0pi->Get2Prong(); | |
143 | ||
144 | Int_t iter=-1; | |
145 | if(fVarsForOpt[0]){ | |
146 | iter++; | |
147 | if(TMath::Abs(pdgdaughters[0])==211) { | |
148 | vars[iter]=dd->InvMassD0(); | |
149 | } else { | |
150 | vars[iter]=dd->InvMassD0bar(); | |
151 | } | |
152 | } | |
153 | if(fVarsForOpt[1]){ | |
154 | iter++; | |
155 | vars[iter]=dd->GetDCA(); | |
156 | } | |
157 | if(fVarsForOpt[2]){ | |
158 | iter++; | |
159 | if(TMath::Abs(pdgdaughters[0])==211) { | |
160 | vars[iter] = dd->CosThetaStarD0(); | |
161 | } else { | |
162 | vars[iter] = dd->CosThetaStarD0bar(); | |
163 | } | |
164 | } | |
165 | if(fVarsForOpt[3]){ | |
166 | iter++; | |
167 | if(TMath::Abs(pdgdaughters[0])==321) { | |
168 | vars[iter]=dd->PtProng(0); | |
169 | } | |
170 | else{ | |
171 | vars[iter]=dd->PtProng(1); | |
172 | } | |
173 | } | |
174 | if(fVarsForOpt[4]){ | |
175 | iter++; | |
176 | if(TMath::Abs(pdgdaughters[0])==211) { | |
177 | vars[iter]=dd->PtProng(0); | |
178 | } | |
179 | else{ | |
180 | vars[iter]=dd->PtProng(1); | |
181 | } | |
182 | } | |
183 | if(fVarsForOpt[5]){ | |
184 | iter++; | |
185 | if(TMath::Abs(pdgdaughters[0])==321) { | |
186 | vars[iter]=dd->Getd0Prong(0); | |
187 | } | |
188 | else{ | |
189 | vars[iter]=dd->Getd0Prong(1); | |
190 | } | |
191 | } | |
192 | if(fVarsForOpt[6]){ | |
193 | iter++; | |
194 | if(TMath::Abs(pdgdaughters[0])==211) { | |
195 | vars[iter]=dd->Getd0Prong(0); | |
196 | } | |
197 | else{ | |
198 | vars[iter]=dd->Getd0Prong(1); | |
199 | } | |
200 | } | |
201 | if(fVarsForOpt[7]){ | |
202 | iter++; | |
203 | vars[iter]= dd->Prodd0d0(); | |
204 | } | |
205 | if(fVarsForOpt[8]){ | |
206 | iter++; | |
207 | vars[iter]=dd->CosPointingAngle(); | |
208 | } | |
209 | if(fVarsForOpt[9]){ | |
210 | iter++; | |
211 | vars[iter]=dstarD0pi->InvMassDstarKpipi(); | |
212 | } | |
213 | if(fVarsForOpt[10]){ | |
214 | iter++; | |
215 | vars[iter]=dstarD0pi->DeltaInvMass(); | |
216 | } | |
217 | if(fVarsForOpt[11]){ | |
218 | iter++; | |
219 | vars[iter] = softPi->Pt(); | |
220 | } | |
221 | if(fVarsForOpt[12]){ | |
222 | iter++; | |
223 | vars[iter] = softPi->Pt(); | |
224 | } | |
225 | if(fVarsForOpt[13]){ | |
226 | iter++; | |
227 | vars[iter] =dstarD0pi->AngleD0dkpPisoft(); | |
228 | } | |
229 | ||
230 | return; | |
231 | } | |
232 | //--------------------------------------------------------------------------- | |
233 | Int_t AliRDHFCutsDStartoKpipi::IsSelected(TObject* obj,Int_t selectionLevel) { | |
234 | // | |
235 | // Apply selection for D*. | |
236 | // | |
237 | if(!fCutsRD){ | |
238 | cout<<"Cut matrice not inizialized. Exit..."<<endl; | |
239 | return 0; | |
240 | } | |
241 | ||
242 | AliAODRecoCascadeHF* d = (AliAODRecoCascadeHF*)obj; | |
243 | if(!d){ | |
244 | cout<<"AliAODRecoCascadeHF null"<<endl; | |
245 | return 0; | |
246 | } | |
247 | ||
248 | AliAODRecoDecayHF2Prong* dd = (AliAODRecoDecayHF2Prong*)d->Get2Prong(); | |
249 | if(!dd){ | |
250 | cout<<"AliAODRecoDecayHF2Prong null"<<endl; | |
251 | return 0; | |
252 | } | |
253 | ||
254 | AliAODTrack *b = (AliAODTrack*)d->GetBachelor(); | |
255 | ||
256 | // selection on daughter tracks | |
257 | if(selectionLevel==AliRDHFCuts::kAll || | |
258 | selectionLevel==AliRDHFCuts::kTracks) { | |
da6fefc3 | 259 | if(!AreDaughtersSelected(dd)) return 0; |
260 | if(fTrackCutsSoftPi) { | |
261 | AliAODVertex *vAOD = d->GetPrimaryVtx(); | |
262 | Double_t pos[3],cov[6]; | |
263 | vAOD->GetXYZ(pos); | |
264 | vAOD->GetCovarianceMatrix(cov); | |
265 | const AliESDVertex vESD(pos,cov,100.,100); | |
266 | if(!IsDaughterSelected(b,&vESD,fTrackCutsSoftPi)) return 0; | |
267 | } | |
45bc9115 | 268 | } |
269 | ||
e4f1bb0a | 270 | Int_t returnvalue=1; |
45bc9115 | 271 | |
272 | // selection on candidate | |
273 | if(selectionLevel==AliRDHFCuts::kAll || | |
274 | selectionLevel==AliRDHFCuts::kCandidate) { | |
275 | ||
276 | Double_t pt=d->Pt(); | |
277 | Int_t ptbin=PtBin(pt); | |
278 | ||
279 | // select D0 that passes D* cuts | |
280 | returnvalue = IsD0FromDStarSelected(pt,dd,selectionLevel); | |
ee1128c6 | 281 | //if(retunvalue==0) return 0; |
282 | ||
283 | if((b->Charge()==+1 && returnvalue==2) || (b->Charge()==-1 && returnvalue==1)) return 0; | |
45bc9115 | 284 | |
285 | // DStarMass and D0mass | |
286 | Double_t mDSPDG = TDatabasePDG::Instance()->GetParticle(413)->Mass(); | |
287 | Double_t mD0PDG = TDatabasePDG::Instance()->GetParticle(421)->Mass(); | |
288 | // delta mass PDG | |
289 | Double_t deltaPDG = mDSPDG-mD0PDG; | |
45bc9115 | 290 | |
45bc9115 | 291 | // Half width DStar mass |
ee1128c6 | 292 | if(TMath::Abs(mDSPDG - (d->InvMassDstarKpipi()))>fCutsRD[GetGlobalIndex(9,ptbin)]) return 0; |
45bc9115 | 293 | // Half width Delta mass |
294 | ||
ee1128c6 | 295 | if(TMath::Abs(deltaPDG-(d->DeltaInvMass())) > fCutsRD[GetGlobalIndex(10,ptbin)]) return 0; |
45bc9115 | 296 | |
297 | // cut on soft pion pt | |
298 | if(b->Pt() < fCutsRD[GetGlobalIndex(11,ptbin)] || b->Pt() > fCutsRD[GetGlobalIndex(12,ptbin)]) return 0; | |
299 | // cut on the angle between D0 decay plane and soft pion | |
300 | if(d->AngleD0dkpPisoft() > fCutsRD[GetGlobalIndex(13,ptbin)]) return 0; | |
301 | ||
302 | } | |
303 | ||
304 | return returnvalue; | |
305 | } | |
306 | //_________________________________________________________________________________________________ | |
da6fefc3 | 307 | Int_t AliRDHFCutsDStartoKpipi::IsD0FromDStarSelected(Double_t pt, TObject* obj,Int_t selectionLevel) const { |
45bc9115 | 308 | // |
309 | // Apply selection for D0 from D*. The selection in on D0 prongs | |
310 | // | |
311 | ||
312 | if(!fCutsRD){ | |
313 | cout<<"Cut matrice not inizialized. Exit..."<<endl; | |
314 | return 0; | |
315 | } | |
316 | ||
317 | AliAODRecoDecayHF2Prong* dd = (AliAODRecoDecayHF2Prong*)obj; | |
318 | ||
319 | if(!dd){ | |
320 | cout<<"AliAODRecoDecayHF2Prong null"<<endl; | |
321 | return 0; | |
322 | } | |
323 | ||
da6fefc3 | 324 | // selection on daughter tracks is done in IsSelected() |
45bc9115 | 325 | |
326 | Int_t returnvalue=1; | |
327 | ||
328 | // selection on candidate | |
329 | if(selectionLevel==AliRDHFCuts::kAll || | |
330 | selectionLevel==AliRDHFCuts::kCandidate) { | |
331 | ||
332 | // D0 mass | |
333 | Double_t mD0PDG = TDatabasePDG::Instance()->GetParticle(421)->Mass(); | |
334 | // delta mass PDG | |
335 | ||
336 | Int_t ptbin=PtBin(pt); | |
337 | ||
338 | Double_t mD0,mD0bar,ctsD0,ctsD0bar; | |
339 | ||
340 | Int_t okD0 =0; | |
341 | Int_t okD0bar =0; | |
342 | okD0=1; okD0bar=1; | |
343 | ||
344 | if(dd->PtProng(1) < fCutsRD[GetGlobalIndex(3,ptbin)] || dd->PtProng(0) < fCutsRD[GetGlobalIndex(4,ptbin)]) okD0 = 0; | |
345 | if(dd->PtProng(0) < fCutsRD[GetGlobalIndex(3,ptbin)] || dd->PtProng(1) < fCutsRD[GetGlobalIndex(4,ptbin)]) okD0bar = 0; | |
346 | ||
347 | if(!okD0 && !okD0bar) return 0; | |
348 | ||
349 | if(TMath::Abs(dd->Getd0Prong(1)) > fCutsRD[GetGlobalIndex(5,ptbin)] || | |
350 | TMath::Abs(dd->Getd0Prong(0)) > fCutsRD[GetGlobalIndex(6,ptbin)]) okD0 = 0; | |
351 | if(TMath::Abs(dd->Getd0Prong(0)) > fCutsRD[GetGlobalIndex(6,ptbin)] || | |
352 | TMath::Abs(dd->Getd0Prong(1)) > fCutsRD[GetGlobalIndex(5,ptbin)]) okD0bar = 0; | |
353 | if(!okD0 && !okD0bar) return 0; | |
354 | ||
355 | if(dd->GetDCA() > fCutsRD[GetGlobalIndex(1,ptbin)]) return 0; | |
356 | ||
357 | dd->InvMassD0(mD0,mD0bar); | |
358 | if(TMath::Abs(mD0-mD0PDG) > fCutsRD[GetGlobalIndex(0,ptbin)]) okD0 = 0; | |
359 | if(TMath::Abs(mD0bar-mD0PDG) > fCutsRD[GetGlobalIndex(0,ptbin)]) okD0bar = 0; | |
360 | if(!okD0 && !okD0bar) return 0; | |
361 | ||
362 | dd->CosThetaStarD0(ctsD0,ctsD0bar); | |
363 | if(TMath::Abs(ctsD0) > fCutsRD[GetGlobalIndex(2,ptbin)]) okD0 = 0; | |
364 | if(TMath::Abs(ctsD0bar) > fCutsRD[GetGlobalIndex(2,ptbin)]) okD0bar = 0; | |
365 | if(!okD0 && !okD0bar) return 0; | |
366 | ||
367 | if(dd->Prodd0d0() > fCutsRD[GetGlobalIndex(7,ptbin)]) return 0; | |
368 | ||
369 | if(dd->CosPointingAngle() < fCutsRD[GetGlobalIndex(8,ptbin)]) return 0; | |
370 | ||
371 | if (okD0) returnvalue=1; //cuts passed as D0 | |
372 | if (okD0bar) returnvalue=2; //cuts passed as D0bar | |
373 | if (okD0 && okD0bar) returnvalue=3; //both | |
374 | } | |
375 | ||
ee1128c6 | 376 | //if((Charge()==+1 && !okD0) || (Charge()==-1 && !okD0bar)) return kFALSE; |
45bc9115 | 377 | return returnvalue; |
378 | } | |
96462a8c | 379 | //---------------------------------------------------------------------------------- |
380 | Bool_t AliRDHFCutsDStartoKpipi::IsInFiducialAcceptance(Double_t pt, Double_t y) const | |
381 | { | |
382 | // | |
383 | // D* fiducial acceptance region | |
384 | // | |
45bc9115 | 385 | |
96462a8c | 386 | if(pt > 5.) { |
387 | // applying cut for pt > 5 GeV | |
388 | AliDebug(4,Form("pt of D* = %f (> 5), cutting at |y| < 0.8\n",pt)); | |
389 | if (TMath::Abs(y) > 0.8){ | |
390 | return kFALSE; | |
391 | } | |
392 | } else { | |
393 | // appliying smooth cut for pt < 5 GeV | |
394 | Double_t maxFiducialY = -0.151/15*pt*pt+1.9/15*pt+0.4; | |
395 | Double_t minFiducialY = 0.151/15*pt*pt-1.9/15*pt-0.4; | |
396 | AliDebug(4,Form("pt of D* = %f (< 5), cutting according to the fiducial zone [%f, %f]\n",pt,minFiducialY,maxFiducialY)); | |
397 | if (y < minFiducialY || y > maxFiducialY){ | |
398 | return kFALSE; | |
399 | } | |
400 | } | |
45bc9115 | 401 | |
96462a8c | 402 | return kTRUE; |
403 | } |