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650b3ced | 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 D0->Kpi | |
19 | // | |
20 | // Author: A.Dainese, andrea.dainese@pd.infn.it | |
21 | ///////////////////////////////////////////////////////////// | |
22 | ||
23 | #include <TDatabasePDG.h> | |
24 | #include <Riostream.h> | |
25 | ||
26 | #include "AliRDHFCutsD0toKpi.h" | |
27 | #include "AliAODRecoDecayHF2Prong.h" | |
28 | #include "AliAODTrack.h" | |
29 | #include "AliESDtrack.h" | |
30 | ||
31 | ClassImp(AliRDHFCutsD0toKpi) | |
32 | ||
33 | //-------------------------------------------------------------------------- | |
a9b75906 | 34 | AliRDHFCutsD0toKpi::AliRDHFCutsD0toKpi(const char* name) : |
35 | AliRDHFCuts(name) | |
650b3ced | 36 | { |
37 | // | |
38 | // Default Constructor | |
39 | // | |
40 | Int_t nvars=9; | |
41 | SetNVars(nvars); | |
42 | TString varNames[9]={"inv. mass [GeV]", | |
43 | "dca [cm]", | |
44 | "cosThetaStar", | |
45 | "pTK [GeV/c]", | |
46 | "pTPi [GeV/c]", | |
47 | "d0K [cm]", | |
48 | "d0Pi [cm]", | |
49 | "d0d0 [cm^2]", | |
50 | "cosThetaPoint"}; | |
51 | Bool_t isUpperCut[9]={kTRUE, | |
52 | kTRUE, | |
53 | kTRUE, | |
54 | kFALSE, | |
55 | kFALSE, | |
56 | kTRUE, | |
57 | kTRUE, | |
58 | kTRUE, | |
59 | kFALSE}; | |
60 | SetVarNames(nvars,varNames,isUpperCut); | |
61 | Bool_t forOpt[9]={kFALSE, | |
62 | kTRUE, | |
63 | kTRUE, | |
64 | kFALSE, | |
65 | kFALSE, | |
66 | kFALSE, | |
67 | kFALSE, | |
68 | kTRUE, | |
69 | kTRUE}; | |
70 | SetVarsForOpt(4,forOpt); | |
71 | Float_t limits[2]={0,999999999.}; | |
72 | SetPtBins(2,limits); | |
73 | } | |
74 | //-------------------------------------------------------------------------- | |
75 | AliRDHFCutsD0toKpi::AliRDHFCutsD0toKpi(const AliRDHFCutsD0toKpi &source) : | |
76 | AliRDHFCuts(source) | |
77 | { | |
78 | // | |
79 | // Copy constructor | |
80 | // | |
81 | ||
82 | } | |
83 | //-------------------------------------------------------------------------- | |
84 | AliRDHFCutsD0toKpi &AliRDHFCutsD0toKpi::operator=(const AliRDHFCutsD0toKpi &source) | |
85 | { | |
86 | // | |
87 | // assignment operator | |
88 | // | |
89 | if(&source == this) return *this; | |
90 | ||
91 | AliRDHFCuts::operator=(source); | |
92 | ||
93 | return *this; | |
94 | } | |
95 | ||
96 | ||
97 | //--------------------------------------------------------------------------- | |
98 | void AliRDHFCutsD0toKpi::GetCutVarsForOpt(AliAODRecoDecayHF *d,Float_t *vars,Int_t nvars,Int_t *pdgdaughters) { | |
99 | // | |
100 | // Fills in vars the values of the variables | |
101 | // | |
102 | ||
650b3ced | 103 | if(nvars!=fnVarsForOpt) { |
104 | printf("AliRDHFCutsD0toKpi::GetCutsVarsForOpt: wrong number of variables\n"); | |
105 | return; | |
106 | } | |
107 | ||
108 | AliAODRecoDecayHF2Prong *dd = (AliAODRecoDecayHF2Prong*)d; | |
650b3ced | 109 | |
650b3ced | 110 | Int_t iter=-1; |
111 | if(fVarsForOpt[0]){ | |
112 | iter++; | |
113 | if(TMath::Abs(pdgdaughters[0])==211) { | |
114 | vars[iter]=dd->InvMassD0(); | |
115 | } else { | |
116 | vars[iter]=dd->InvMassD0bar(); | |
117 | } | |
118 | } | |
119 | if(fVarsForOpt[1]){ | |
120 | iter++; | |
121 | vars[iter]=dd->GetDCA(); | |
122 | } | |
123 | if(fVarsForOpt[2]){ | |
124 | iter++; | |
125 | if(TMath::Abs(pdgdaughters[0])==211) { | |
126 | vars[iter] = dd->CosThetaStarD0(); | |
127 | } else { | |
128 | vars[iter] = dd->CosThetaStarD0bar(); | |
129 | } | |
130 | } | |
131 | if(fVarsForOpt[3]){ | |
132 | iter++; | |
133 | if(TMath::Abs(pdgdaughters[0])==321) { | |
134 | vars[iter]=dd->PtProng(0); | |
135 | } | |
136 | else{ | |
137 | vars[iter]=dd->PtProng(1); | |
138 | } | |
139 | } | |
140 | if(fVarsForOpt[4]){ | |
141 | iter++; | |
142 | if(TMath::Abs(pdgdaughters[0])==211) { | |
143 | vars[iter]=dd->PtProng(0); | |
144 | } | |
145 | else{ | |
146 | vars[iter]=dd->PtProng(1); | |
147 | } | |
148 | } | |
149 | if(fVarsForOpt[5]){ | |
150 | iter++; | |
151 | if(TMath::Abs(pdgdaughters[0])==321) { | |
152 | vars[iter]=dd->Getd0Prong(0); | |
153 | } | |
154 | else{ | |
155 | vars[iter]=dd->Getd0Prong(1); | |
156 | } | |
157 | } | |
158 | if(fVarsForOpt[6]){ | |
159 | iter++; | |
160 | if(TMath::Abs(pdgdaughters[0])==211) { | |
161 | vars[iter]=dd->Getd0Prong(0); | |
162 | } | |
163 | else{ | |
164 | vars[iter]=dd->Getd0Prong(1); | |
165 | } | |
166 | } | |
167 | if(fVarsForOpt[7]){ | |
168 | iter++; | |
169 | vars[iter]= dd->Prodd0d0(); | |
170 | } | |
171 | if(fVarsForOpt[8]){ | |
172 | iter++; | |
173 | vars[iter]=dd->CosPointingAngle(); | |
174 | } | |
175 | ||
176 | return; | |
177 | } | |
178 | //--------------------------------------------------------------------------- | |
179 | Int_t AliRDHFCutsD0toKpi::IsSelected(TObject* obj,Int_t selectionLevel) { | |
180 | // | |
181 | // Apply selection | |
182 | // | |
183 | ||
184 | if(!fCutsRD){ | |
185 | cout<<"Cut matrice not inizialized. Exit..."<<endl; | |
3cbc09cd | 186 | return 0; |
650b3ced | 187 | } |
188 | //PrintAll(); | |
3cbc09cd | 189 | AliAODRecoDecayHF2Prong* d=(AliAODRecoDecayHF2Prong*)obj; |
650b3ced | 190 | |
650b3ced | 191 | if(!d){ |
192 | cout<<"AliAODRecoDecayHF2Prong null"<<endl; | |
193 | return 0; | |
194 | } | |
195 | ||
3cbc09cd | 196 | |
650b3ced | 197 | // selection on daughter tracks |
198 | if(selectionLevel==AliRDHFCuts::kAll || | |
199 | selectionLevel==AliRDHFCuts::kTracks) { | |
3cbc09cd | 200 | if(!AreDaughtersSelected(d)) return 0; |
650b3ced | 201 | } |
202 | ||
203 | ||
c96634a2 | 204 | // returnvalue: 0 not sel, 1 only D0, 2 only D0bar, 3 both |
205 | Int_t returnvaluePID=3; | |
206 | Int_t returnvalueCuts=3; | |
207 | Int_t returnvalue=3; | |
208 | ||
209 | // selection on PID | |
210 | if(selectionLevel==AliRDHFCuts::kAll || | |
211 | selectionLevel==AliRDHFCuts::kPID) { | |
212 | returnvaluePID = IsSelectedPID(d); | |
213 | } | |
214 | ||
215 | ||
650b3ced | 216 | |
217 | // selection on candidate | |
218 | if(selectionLevel==AliRDHFCuts::kAll || | |
219 | selectionLevel==AliRDHFCuts::kCandidate) { | |
220 | ||
221 | Double_t pt=d->Pt(); | |
222 | ||
223 | Int_t okD0=0,okD0bar=0; | |
224 | ||
225 | Int_t ptbin=PtBin(pt); | |
226 | ||
227 | Double_t mD0,mD0bar,ctsD0,ctsD0bar; | |
228 | okD0=1; okD0bar=1; | |
229 | ||
230 | Double_t mD0PDG = TDatabasePDG::Instance()->GetParticle(421)->Mass(); | |
231 | ||
232 | if(d->PtProng(1) < fCutsRD[GetGlobalIndex(3,ptbin)] || d->PtProng(0) < fCutsRD[GetGlobalIndex(4,ptbin)]) okD0 = 0; | |
233 | if(d->PtProng(0) < fCutsRD[GetGlobalIndex(3,ptbin)] || d->PtProng(1) < fCutsRD[GetGlobalIndex(4,ptbin)]) okD0bar = 0; | |
234 | ||
4755453e | 235 | if(!okD0 && !okD0bar) return 0; |
650b3ced | 236 | |
237 | if(TMath::Abs(d->Getd0Prong(1)) > fCutsRD[GetGlobalIndex(5,ptbin)] || | |
238 | TMath::Abs(d->Getd0Prong(0)) > fCutsRD[GetGlobalIndex(6,ptbin)]) okD0 = 0; | |
239 | if(TMath::Abs(d->Getd0Prong(0)) > fCutsRD[GetGlobalIndex(6,ptbin)] || | |
240 | TMath::Abs(d->Getd0Prong(1)) > fCutsRD[GetGlobalIndex(5,ptbin)]) okD0bar = 0; | |
4755453e | 241 | if(!okD0 && !okD0bar) return 0; |
650b3ced | 242 | |
4755453e | 243 | if(d->GetDCA() > fCutsRD[GetGlobalIndex(1,ptbin)]) return 0; |
650b3ced | 244 | |
245 | d->InvMassD0(mD0,mD0bar); | |
246 | if(TMath::Abs(mD0-mD0PDG) > fCutsRD[GetGlobalIndex(0,ptbin)]) okD0 = 0; | |
247 | if(TMath::Abs(mD0bar-mD0PDG) > fCutsRD[GetGlobalIndex(0,ptbin)]) okD0bar = 0; | |
4755453e | 248 | if(!okD0 && !okD0bar) return 0; |
650b3ced | 249 | |
250 | d->CosThetaStarD0(ctsD0,ctsD0bar); | |
251 | if(TMath::Abs(ctsD0) > fCutsRD[GetGlobalIndex(2,ptbin)]) okD0 = 0; | |
252 | if(TMath::Abs(ctsD0bar) > fCutsRD[GetGlobalIndex(2,ptbin)]) okD0bar = 0; | |
4755453e | 253 | if(!okD0 && !okD0bar) return 0; |
650b3ced | 254 | |
4755453e | 255 | if(d->Prodd0d0() > fCutsRD[GetGlobalIndex(7,ptbin)]) return 0; |
650b3ced | 256 | |
4755453e | 257 | if(d->CosPointingAngle() < fCutsRD[GetGlobalIndex(8,ptbin)]) return 0; |
650b3ced | 258 | |
c96634a2 | 259 | if (okD0) returnvalueCuts=1; //cuts passed as D0 |
260 | if (okD0bar) returnvalueCuts=2; //cuts passed as D0bar | |
261 | if (okD0 && okD0bar) returnvalueCuts=3; //cuts passed as D0 and D0bar | |
262 | } | |
263 | ||
264 | ||
265 | // combine PID and Cuts results | |
266 | switch(returnvaluePID) { | |
267 | case 0: | |
268 | returnvalue=0; | |
269 | break; | |
270 | case 1: | |
271 | returnvalue=((returnvalueCuts==1 || returnvalueCuts==3) ? 1 : 0); | |
272 | break; | |
273 | case 2: | |
274 | returnvalue=((returnvalueCuts==2 || returnvalueCuts==3) ? 2 : 0); | |
275 | break; | |
276 | case 3: | |
277 | returnvalue=returnvalueCuts; | |
278 | break; | |
279 | default: | |
280 | returnvalue=0; | |
281 | break; | |
650b3ced | 282 | } |
283 | ||
650b3ced | 284 | return returnvalue; |
650b3ced | 285 | } |
286 | //--------------------------------------------------------------------------- | |
aa8d25fe | 287 | Bool_t AliRDHFCutsD0toKpi::IsInFiducialAcceptance(Double_t pt, Double_t y) const |
288 | { | |
289 | // | |
290 | // Checking if D0 is in fiducial acceptance region | |
291 | // | |
292 | ||
c96634a2 | 293 | if(pt > 5.) { |
aa8d25fe | 294 | // applying cut for pt > 5 GeV |
8ac644e5 | 295 | AliDebug(4,Form("pt of D0 = %f (> 5), cutting at |y| < 0.8\n",pt)); |
aa8d25fe | 296 | if (TMath::Abs(y) > 0.8){ |
297 | return kFALSE; | |
298 | } | |
299 | } else { | |
300 | // appliying smooth cut for pt < 5 GeV | |
301 | Double_t maxFiducialY = -0.2/15*pt*pt+1.9/15*pt+0.5; | |
302 | Double_t minFiducialY = 0.2/15*pt*pt-1.9/15*pt-0.5; | |
8ac644e5 | 303 | AliDebug(4,Form("pt of D0 = %f (< 5), cutting according to the fiducial zone [%f, %f]\n",pt,minFiducialY,maxFiducialY)); |
aa8d25fe | 304 | if (y < minFiducialY || y > maxFiducialY){ |
305 | return kFALSE; | |
306 | } | |
307 | } | |
c96634a2 | 308 | |
aa8d25fe | 309 | return kTRUE; |
aa8d25fe | 310 | } |
c96634a2 | 311 | //--------------------------------------------------------------------------- |
312 | Int_t AliRDHFCutsD0toKpi::IsSelectedPID(AliAODRecoDecayHF* rd) const { | |
313 | // | |
314 | // Apply PID selection | |
315 | // (return: 0 not sel, 1 only D0, 2 only D0bar, 3 both) | |
316 | // | |
317 | ||
318 | if(!fUsePID) return 3; | |
319 | ||
320 | Int_t returnvalue=0; | |
aa8d25fe | 321 | |
c96634a2 | 322 | // HERE LOOP ON DAUGHTERS, USE AliAODpidHF CLASS, ETC... |
323 | ||
324 | ||
325 | return returnvalue; | |
326 | } |