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05d80dd6 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2008, 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 | ||
27de2dfb | 16 | /* $Id$ */ |
17 | ||
05d80dd6 | 18 | ///////////////////////////////////////////////////////////// |
19 | // | |
20 | // Class for AOD reconstructed heavy-flavour cascades | |
21 | // | |
c3fe1eed | 22 | // Author: X-M. Zhang, zhangxm@iopp.ccnu.edu.cn |
05d80dd6 | 23 | ///////////////////////////////////////////////////////////// |
24 | ||
25 | #include <TVector3.h> | |
26 | #include <TDatabasePDG.h> | |
b3999999 | 27 | #include <TClonesArray.h> |
28 | #include "AliAODMCParticle.h" | |
05d80dd6 | 29 | #include "AliAODRecoDecay.h" |
30 | #include "AliAODVertex.h" | |
31 | #include "AliAODRecoDecayHF2Prong.h" | |
32 | #include "AliAODRecoCascadeHF.h" | |
33 | ||
34 | ClassImp(AliAODRecoCascadeHF) | |
35 | //----------------------------------------------------------------------------- | |
36 | ||
37 | AliAODRecoCascadeHF::AliAODRecoCascadeHF() : | |
dcfa35b3 | 38 | AliAODRecoDecayHF2Prong() |
05d80dd6 | 39 | { |
40 | // | |
41 | // Default Constructor | |
42 | // | |
43 | } | |
44 | //----------------------------------------------------------------------------- | |
45 | AliAODRecoCascadeHF::AliAODRecoCascadeHF(AliAODVertex *vtx2, Short_t charge, | |
46 | Double_t *px, Double_t *py, Double_t *pz, | |
47 | Double_t *d0, Double_t *d0err, Double_t dca) : | |
dcfa35b3 | 48 | AliAODRecoDecayHF2Prong(vtx2, px, py, pz, d0, d0err, dca) |
05d80dd6 | 49 | { |
50 | // | |
51 | // Constructor with AliAODVertex for decay vertex | |
52 | // | |
53 | SetCharge(charge); | |
54 | } | |
55 | //----------------------------------------------------------------------------- | |
56 | AliAODRecoCascadeHF::AliAODRecoCascadeHF(AliAODVertex *vtx2, Short_t charge, | |
57 | Double_t *d0, Double_t *d0err, Double_t dca) : | |
dcfa35b3 | 58 | AliAODRecoDecayHF2Prong(vtx2, d0, d0err, dca) |
05d80dd6 | 59 | { |
60 | // | |
61 | // Constructor with decay vertex and without prongs momenta | |
62 | // | |
63 | SetCharge(charge); | |
64 | } | |
65 | //----------------------------------------------------------------------------- | |
66 | AliAODRecoCascadeHF::AliAODRecoCascadeHF(const AliAODRecoCascadeHF &source) : | |
dcfa35b3 | 67 | AliAODRecoDecayHF2Prong(source) |
05d80dd6 | 68 | { |
69 | // | |
70 | // Copy constructor | |
71 | // | |
72 | } | |
73 | //----------------------------------------------------------------------------- | |
74 | AliAODRecoCascadeHF &AliAODRecoCascadeHF::operator=(const AliAODRecoCascadeHF &source) | |
75 | { | |
76 | // | |
77 | // assignment operator | |
78 | // | |
79 | if(&source == this) return *this; | |
80 | ||
81 | AliAODRecoDecayHF2Prong::operator=(source); | |
82 | ||
05d80dd6 | 83 | return *this; |
84 | } | |
85 | //----------------------------------------------------------------------------- | |
86 | AliAODRecoCascadeHF::~AliAODRecoCascadeHF() | |
87 | { | |
88 | // | |
89 | // Default Destructor | |
90 | // | |
91 | } | |
92 | //----------------------------------------------------------------------------- | |
93 | Double_t AliAODRecoCascadeHF::InvMassDstarKpipi() const | |
94 | { | |
95 | // | |
96 | // 3 prong invariant mass of the D0 daughters and the soft pion | |
97 | // | |
78489ccc | 98 | Double_t e[3]; |
99 | if (Charge()>0){ | |
100 | e[0]=Get2Prong()->EProng(0,211); | |
101 | e[1]=Get2Prong()->EProng(1,321); | |
102 | }else{ | |
103 | e[0]=Get2Prong()->EProng(0,321); | |
104 | e[1]=Get2Prong()->EProng(1,211); | |
105 | } | |
106 | e[2]=EProng(0,211); | |
05d80dd6 | 107 | |
78489ccc | 108 | Double_t esum = e[0]+e[1]+e[2]; |
109 | Double_t minv = TMath::Sqrt(esum*esum-P()*P()); | |
05d80dd6 | 110 | |
78489ccc | 111 | return minv; |
05d80dd6 | 112 | } |
b3999999 | 113 | //---------------------------------------------------------------------------- |
114 | Int_t AliAODRecoCascadeHF::MatchToMC(Int_t pdgabs,Int_t pdgabs2prong, | |
383937f0 | 115 | Int_t *pdgDg,Int_t *pdgDg2prong, |
36462b08 | 116 | TClonesArray *mcArray, Bool_t isV0) const |
b3999999 | 117 | { |
118 | // | |
119 | // Check if this candidate is matched to a MC signal | |
120 | // If no, return -1 | |
121 | // If yes, return label (>=0) of the AliAODMCParticle | |
122 | // | |
123 | ||
8862e6bf | 124 | Int_t ndg=GetNDaughters(); |
53c91ed7 | 125 | if(ndg==0) { |
b3999999 | 126 | AliError("No daughters available"); |
127 | return -1; | |
128 | } | |
e7af8919 | 129 | |
85036182 | 130 | if ( isV0 && |
131 | ( (pdgDg[1]==2212 && pdgDg[0]==310) || | |
132 | (pdgDg[1]==211 && pdgDg[0]==3122) ) ) { | |
133 | AliWarning("Please, pay attention: first element in AliAODRecoCascadeHF object must be the bachelor and second one V0. Skipping!"); | |
134 | return -1; | |
135 | } | |
136 | ||
36462b08 | 137 | Int_t lab2Prong = -1; |
138 | ||
139 | if (!isV0) { | |
140 | AliAODRecoDecayHF2Prong *the2Prong = Get2Prong(); | |
141 | lab2Prong = the2Prong->MatchToMC(pdgabs2prong,mcArray,2,pdgDg2prong); | |
142 | } else { | |
ff12b981 | 143 | AliAODv0 *theV0 = dynamic_cast<AliAODv0*>(Getv0()); |
c75edf3d | 144 | lab2Prong = theV0->MatchToMC(pdgabs2prong,mcArray,2,pdgDg2prong); // the V0 |
36462b08 | 145 | } |
b3999999 | 146 | |
147 | if(lab2Prong<0) return -1; | |
148 | ||
e11ae259 | 149 | Int_t dgLabels[10]={0,0,0,0,0,0,0,0,0,0}; |
b3999999 | 150 | |
c75edf3d | 151 | if (!isV0) { |
152 | // loop on daughters and write labels | |
153 | for(Int_t i=0; i<ndg; i++) { | |
154 | AliVTrack *trk = dynamic_cast<AliVTrack*>(GetDaughter(i)); | |
155 | if(!trk) continue; | |
156 | Int_t lab = trk->GetLabel(); | |
157 | if(lab==-1) { // this daughter is the 2prong | |
158 | lab=lab2Prong; | |
159 | } else if(lab<-1) continue; | |
160 | dgLabels[i] = lab; | |
161 | } | |
162 | } else { | |
163 | AliVTrack *trk = dynamic_cast<AliVTrack*>(GetBachelor()); // the bachelor | |
164 | if (!trk) return -1; | |
165 | dgLabels[0] = trk->GetLabel();//TMath::Abs(trk->GetLabel()); | |
166 | dgLabels[1] = lab2Prong; | |
b3999999 | 167 | } |
168 | ||
e7af8919 | 169 | Int_t finalLabel = AliAODRecoDecay::MatchToMC(pdgabs,mcArray,dgLabels,2,2,pdgDg); |
9ff3fa8f | 170 | |
171 | if (finalLabel>=0){ | |
172 | // debug printouts for Lc->V0 bachelor case | |
173 | ||
174 | if ( isV0 && (dgLabels[0]!=-1 && dgLabels[1]!=-1) ) { | |
ff12b981 | 175 | AliAODv0 *theV0 = dynamic_cast<AliAODv0*>(Getv0()); |
9ff3fa8f | 176 | Bool_t onTheFly = theV0->GetOnFlyStatus(); |
9ff3fa8f | 177 | if (pdgDg[0]==2212 && pdgDg[1]==310) { |
ff12b981 | 178 | AliAODMCParticle*k0s = dynamic_cast<AliAODMCParticle*>(mcArray->At(lab2Prong)); |
4184976e | 179 | if(k0s){ |
180 | Int_t labK0 = k0s->GetMother(); | |
181 | AliAODMCParticle*k0bar = dynamic_cast<AliAODMCParticle*>(mcArray->At(labK0)); | |
182 | if(k0bar){ | |
183 | AliDebug(1,Form(" (onTheFly=%1d) LabelV0=%d (%d) -> LabelK0S=%d (%d -> %d %d)",onTheFly,labK0,k0bar->GetPdgCode(),lab2Prong,pdgabs2prong,pdgDg2prong[0],pdgDg2prong[1])); | |
184 | AliDebug(1,Form(" LabelLc=%d (%d) -> LabelBachelor=%d (%d) LabelV0=%d (%d)", | |
185 | finalLabel,pdgabs, | |
186 | dgLabels[0],pdgDg[0],dgLabels[1],pdgDg[1])); | |
187 | } | |
188 | } | |
9ff3fa8f | 189 | } else if (pdgDg[0]==211 && pdgDg[1]==3122) { |
190 | AliDebug(1,Form(" (onTheFly=%1d) LabelV0=%d (%d -> %d %d)",onTheFly,lab2Prong,pdgabs2prong,pdgDg2prong[0],pdgDg2prong[1])); | |
191 | AliDebug(1,Form(" LabelLc=%d (%d) -> LabelBachelor=%d (%d) LabelV0=%d (%d)", | |
192 | finalLabel,pdgabs, | |
e7af8919 | 193 | dgLabels[0],pdgDg[0],dgLabels[1],pdgDg[1])); |
9ff3fa8f | 194 | } |
195 | ||
e7af8919 | 196 | } |
197 | } | |
198 | ||
199 | return finalLabel; | |
200 | ||
b3999999 | 201 | } |
05d80dd6 | 202 | //----------------------------------------------------------------------------- |
203 | Bool_t AliAODRecoCascadeHF::SelectDstar(const Double_t *cutsDstar, | |
204 | const Double_t *cutsD0, | |
205 | Bool_t testD0) const | |
206 | { | |
207 | // | |
208 | // cutsDstar[0] = inv. mass half width of D* [GeV] | |
209 | // cutsDstar[1] = half width of (M_Kpipi-M_D0) [GeV] | |
210 | // cutsDstar[2] = PtMin of pi_s [GeV/c] | |
211 | // cutsDstar[3] = PtMax of pi_s [GeV/c] | |
212 | // cutsDstar[4] = theta, angle between the pi_s and decay plane of the D0 [rad] | |
213 | // | |
214 | // cutsD0[0] = inv. mass half width [GeV] | |
215 | // cutsD0[1] = dca [cm] | |
216 | // cutsD0[2] = cosThetaStar | |
217 | // cutsD0[3] = pTK [GeV/c] | |
218 | // cutsD0[4] = pTPi [GeV/c] | |
219 | // cutsD0[5] = d0K [cm] upper limit! | |
220 | // cutsD0[6] = d0Pi [cm] upper limit! | |
221 | // cutsD0[7] = d0d0 [cm^2] | |
222 | // cutsD0[8] = cosThetaPoint | |
223 | ||
224 | ||
225 | // check that the D0 passes the cuts | |
226 | // (if we have a D*+, it has to pass as D0, | |
227 | // if we have a D*-, it has to pass as D0bar) | |
228 | ||
229 | if(testD0) { | |
230 | Int_t okD0=0,okD0bar=0; | |
231 | Get2Prong()->SelectD0(cutsD0,okD0,okD0bar); | |
232 | if((Charge()==+1 && !okD0) || (Charge()==-1 && !okD0bar)) return kFALSE; | |
233 | } | |
234 | ||
235 | if( (PtProng(0)<cutsDstar[2]) || (PtProng(0)>cutsDstar[3]) ) return kFALSE; | |
236 | ||
237 | Double_t mDstar = TDatabasePDG::Instance()->GetParticle(413)->Mass(); | |
238 | Double_t invmDstar = InvMassDstarKpipi(); | |
239 | if(TMath::Abs(mDstar-invmDstar)>cutsDstar[0]) return kFALSE; | |
240 | ||
241 | Double_t mD0 = TDatabasePDG::Instance()->GetParticle(421)->Mass(); | |
242 | if(TMath::Abs((mDstar-mD0)-DeltaInvMass())>cutsDstar[1]) return kFALSE; | |
243 | ||
3f6adfc9 | 244 | Double_t theta = AngleD0dkpPisoft(); |
05d80dd6 | 245 | if(theta>cutsDstar[4]) return kFALSE; |
05d80dd6 | 246 | |
247 | return kTRUE; | |
248 | } | |
a07ad8e0 | 249 | //----------------------------------------------------------------------------- |
250 | Bool_t AliAODRecoCascadeHF::SelectLctoV0(const Double_t *cutsLctoV0, | |
9ff3fa8f | 251 | Bool_t okLck0sp, Bool_t okLcLpi, Bool_t okLcLbarpi) const |
a07ad8e0 | 252 | { |
253 | // cuts on Lambdac candidates to V0+bachelor | |
254 | // (to be passed to AliAODRecoDecayHF3Prong::SelectLctoV0()) | |
255 | // 0 = inv. mass half width in K0s hypothesis [GeV] | |
256 | // 1 = inv. mass half width in Lambda hypothesis [GeV] | |
257 | // 2 = inv. mass V0 in K0s hypothesis half width [GeV] | |
258 | // 3 = inv. mass V0 in Lambda hypothesis half width [GeV] | |
259 | // 4 = pT min Bachelor track [GeV/c] | |
260 | // 5 = pT min V0-Positive track [GeV/c] | |
261 | // 6 = pT min V0-Negative track [GeV/c] | |
9ff3fa8f | 262 | // 7 = dca cut on the cascade (cm) |
263 | // 8 = dca cut on the V0 (cm) | |
a07ad8e0 | 264 | |
9ff3fa8f | 265 | // if ( !Getv0() || !Getv0PositiveTrack() || !Getv0NegativeTrack() ) |
266 | // { AliInfo(Form("Not adapted for ESDv0s, return true...")); return false; } | |
a07ad8e0 | 267 | |
268 | Double_t mLck0sp,mLcLpi; | |
9ff3fa8f | 269 | okLck0sp=1; okLcLpi=1; okLcLbarpi=1; |
a07ad8e0 | 270 | |
271 | Double_t mLcPDG = TDatabasePDG::Instance()->GetParticle(4122)->Mass(); | |
272 | Double_t mk0sPDG = TDatabasePDG::Instance()->GetParticle(310)->Mass(); | |
273 | Double_t mLPDG = TDatabasePDG::Instance()->GetParticle(3122)->Mass(); | |
274 | ||
275 | // k0s + p | |
276 | double mk0s = Getv0()->MassK0Short(); | |
277 | mLck0sp = InvMassLctoK0sP(); | |
278 | ||
279 | // lambda + pi | |
280 | double mlambda = Getv0()->MassLambda(); | |
281 | double malambda = Getv0()->MassAntiLambda(); | |
282 | mLcLpi = InvMassLctoLambdaPi(); | |
283 | ||
284 | // cut on Lc mass | |
285 | // with k0s p hypothesis | |
286 | if(TMath::Abs(mLck0sp-mLcPDG)>cutsLctoV0[0]) okLck0sp = 0; | |
287 | // with Lambda pi hypothesis | |
288 | if(TMath::Abs(mLcLpi-mLcPDG)>cutsLctoV0[1]) okLcLpi = 0; | |
9ff3fa8f | 289 | okLcLbarpi = okLcLpi; |
290 | ||
a07ad8e0 | 291 | // cuts on the v0 mass |
9ff3fa8f | 292 | if( TMath::Abs(mk0s-mk0sPDG)>cutsLctoV0[2]) okLck0sp = 0; |
293 | //if( TMath::Abs(mlambda-mLPDG)>cutsLctoV0[3] && | |
294 | //TMath::Abs(malambda-mLPDG)>cutsLctoV0[3] ) okLcLpi = 0; | |
295 | if( !(GetBachelor()->Charge()==+1 && TMath::Abs(mlambda-mLPDG)<=cutsLctoV0[3]) ) okLcLpi = 0; | |
296 | if( !(GetBachelor()->Charge()==-1 && TMath::Abs(malambda-mLPDG)<=cutsLctoV0[3]) ) okLcLbarpi = 0; | |
a07ad8e0 | 297 | |
9ff3fa8f | 298 | if(!okLck0sp && !okLcLpi && !okLcLbarpi) return 0; |
a07ad8e0 | 299 | |
300 | // cuts on the minimum pt of the tracks | |
301 | if(TMath::Abs(GetBachelor()->Pt()) < cutsLctoV0[4]) return 0; | |
302 | if(TMath::Abs(Getv0PositiveTrack()->Pt()) < cutsLctoV0[5]) return 0; | |
303 | if(TMath::Abs(Getv0NegativeTrack()->Pt()) < cutsLctoV0[6]) return 0; | |
304 | ||
a07ad8e0 | 305 | // cut on the cascade dca |
9ff3fa8f | 306 | if( TMath::Abs(GetDCA(0))>cutsLctoV0[7] //|| |
307 | //TMath::Abs(Getv0()->DcaPosToPrimVertex())>cutsLctoV0[7] || | |
308 | //TMath::Abs(Getv0()->DcaNegToPrimVertex())>cutsLctoV0[7] | |
309 | ) return 0; | |
310 | ||
311 | // cut on the v0 dca | |
312 | if(TMath::Abs(Getv0()->DcaV0Daughters()) > cutsLctoV0[8]) return 0; | |
313 | ||
314 | // cut on V0 cosine of pointing angle wrt PV | |
315 | if (CosV0PointingAngle() < cutsLctoV0[9]) { // cosine of V0 pointing angle wrt primary vertex | |
316 | AliDebug(4,Form(" V0 cosine of pointing angle doesn't pass the cut")); | |
317 | return 0; | |
318 | } | |
319 | ||
320 | // cut on bachelor transverse impact parameter wrt PV | |
321 | if (TMath::Abs(Getd0Prong(0)) > cutsLctoV0[10]) { // bachelor transverse impact parameter wrt PV | |
322 | AliDebug(4,Form(" bachelor transverse impact parameter doesn't pass the cut")); | |
323 | return 0; | |
324 | } | |
325 | ||
326 | // cut on V0 transverse impact parameter wrt PV | |
327 | if (TMath::Abs(Getd0Prong(1)) > cutsLctoV0[11]) { // V0 transverse impact parameter wrt PV | |
328 | AliDebug(4,Form(" V0 transverse impact parameter doesn't pass the cut")); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | // cut on K0S invariant mass veto | |
333 | if (TMath::Abs(Getv0()->MassK0Short()-mk0sPDG) < cutsLctoV0[12]) { // K0S invariant mass veto | |
334 | AliDebug(4,Form(" veto on K0S invariant mass doesn't pass the cut")); | |
335 | return 0; | |
336 | } | |
337 | ||
338 | // cut on Lambda/LambdaBar invariant mass veto | |
339 | if (TMath::Abs(Getv0()->MassLambda()-mLPDG) < cutsLctoV0[13] || | |
340 | TMath::Abs(Getv0()->MassAntiLambda()-mLPDG) < cutsLctoV0[13] ) { // Lambda/LambdaBar invariant mass veto | |
341 | AliDebug(4,Form(" veto on K0S invariant mass doesn't pass the cut")); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | // cut on gamma invariant mass veto | |
346 | if (Getv0()->InvMass2Prongs(0,1,11,11) < cutsLctoV0[14]) { // K0S invariant mass veto | |
347 | AliDebug(4,Form(" veto on gamma invariant mass doesn't pass the cut")); | |
348 | return 0; | |
349 | } | |
350 | ||
351 | // cut on V0 pT min | |
352 | if (Getv0()->Pt() < cutsLctoV0[15]) { // V0 pT min | |
353 | AliDebug(4,Form(" V0 track Pt=%2.2e > %2.2e",Getv0()->Pt(),cutsLctoV0[15])); | |
354 | return 0; | |
355 | } | |
a07ad8e0 | 356 | |
357 | return true; | |
358 | ||
359 | } | |
360 | //----------------------------------------------------------------------------- | |
3f6adfc9 | 361 | Double_t AliAODRecoCascadeHF::AngleD0dkpPisoft() const { |
362 | // | |
363 | // Angle of soft pion to D0 decay plane | |
364 | // | |
365 | ||
366 | TVector3 p3Trk0(Get2Prong()->PxProng(0),Get2Prong()->PyProng(0),Get2Prong()->PzProng(0)); // from D0 | |
367 | TVector3 p3Trk1(Get2Prong()->PxProng(1),Get2Prong()->PyProng(1),Get2Prong()->PzProng(1)); // from D0 | |
368 | TVector3 p3Trk2(PxProng(0),PyProng(0),PzProng(0)); // pi_s | |
369 | ||
370 | TVector3 perp = p3Trk0.Cross(p3Trk1); | |
371 | Double_t theta = p3Trk2.Angle(perp); | |
372 | if(theta>(TMath::Pi()-theta)) theta = TMath::Pi() - theta; | |
373 | theta = TMath::Pi()/2. - theta; | |
374 | ||
375 | return theta; | |
376 | } | |
ccfae9f3 | 377 | //----------------------------------------------------------------------------- |
378 | Bool_t AliAODRecoCascadeHF::TrigonometricalCut() const { | |
379 | // | |
380 | // Trigonometrical constraint | |
381 | // | |
382 | TVector3 p3Trk0(Get2Prong()->PxProng(0),Get2Prong()->PyProng(0),Get2Prong()->PzProng(0)); // from D0 | |
383 | TVector3 p3Trk1(Get2Prong()->PxProng(1),Get2Prong()->PyProng(1),Get2Prong()->PzProng(1)); // from D0 | |
384 | TVector3 p3Trk2(PxProng(0),PyProng(0),PzProng(0)); // pi_s | |
385 | ||
386 | Double_t alpha = p3Trk0.Angle(p3Trk2); | |
387 | Double_t beta = p3Trk1.Angle(p3Trk2); | |
388 | ||
389 | Double_t cosphi01 = TMath::Cos(alpha) / TMath::Cos(AngleD0dkpPisoft()); | |
390 | Double_t cosphi02 = TMath::Cos(beta) / TMath::Cos(AngleD0dkpPisoft()); | |
391 | ||
392 | Double_t phi01 = TMath::ACos(cosphi01); | |
393 | Double_t phi02 = TMath::ACos(cosphi02); | |
394 | Double_t phi00 = p3Trk0.Angle(p3Trk1); | |
395 | ||
396 | if((phi01>phi00) || (phi02>phi00)) return kFALSE; | |
397 | return kTRUE; | |
398 | } | |
8cb66396 | 399 | |
c9283e92 | 400 | //----------------------------------------------------------------------------- |
401 | Double_t AliAODRecoCascadeHF::DecayLengthV0() const | |
402 | { | |
403 | // | |
404 | // Returns V0 decay length wrt primary vertex | |
405 | // | |
406 | ||
407 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
408 | ||
409 | if (!v0) | |
410 | return -1.; | |
411 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
412 | Double_t posVtx[3] = {0.,0.,0.}; | |
413 | vtxPrimary->GetXYZ(posVtx); | |
414 | return v0->DecayLengthV0(posVtx); | |
415 | ||
416 | } | |
9ff3fa8f | 417 | //----------------------------------------------------------------------------- |
418 | Double_t AliAODRecoCascadeHF::DecayLengthXYV0() const | |
419 | { | |
420 | // | |
421 | // Returns transverse V0 decay length wrt primary vertex | |
422 | // | |
423 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
424 | ||
425 | if (!v0) | |
426 | return -1.; | |
427 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
428 | Double_t posVtx[3] = {0.,0.,0.}; | |
429 | vtxPrimary->GetXYZ(posVtx); | |
430 | return v0->DecayLengthXY(posVtx); | |
431 | ||
432 | } | |
433 | //----------------------------------------------------------------------------- | |
434 | Double_t AliAODRecoCascadeHF::CosV0PointingAngle() const | |
435 | { | |
436 | // | |
437 | // Returns cosine of V0 pointing angle wrt primary vertex | |
438 | // | |
439 | ||
440 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
441 | ||
442 | if (!v0) | |
443 | return -999.; | |
444 | ||
445 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
446 | Double_t posVtx[3] = {0.,0.,0.}; | |
447 | vtxPrimary->GetXYZ(posVtx); | |
448 | return v0->CosPointingAngle(posVtx); | |
449 | ||
450 | } | |
ff12b981 | 451 | //----------------------------------------------------------------------------- |
452 | Double_t AliAODRecoCascadeHF::CosV0PointingAngleXY() const | |
453 | { | |
454 | // | |
455 | // Returns XY cosine of V0 pointing angle wrt primary vertex | |
456 | // | |
457 | ||
458 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
459 | ||
460 | if (!v0) | |
461 | return -999.; | |
462 | ||
463 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
464 | Double_t posVtx[3] = {0.,0.,0.}; | |
465 | vtxPrimary->GetXYZ(posVtx); | |
466 | return v0->CosPointingAngleXY(posVtx); | |
467 | ||
468 | } | |
469 | //----------------------------------------------------------------------------- | |
470 | Double_t AliAODRecoCascadeHF::NormalizedV0DecayLength() const | |
471 | { | |
472 | // | |
473 | // Returns V0 normalized decay length wrt primary vertex | |
474 | // | |
475 | ||
476 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
477 | ||
478 | if (!v0) | |
479 | return -1.; | |
480 | //AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
481 | //Double_t posVtx[3] = {0.,0.,0.}; | |
482 | //vtxPrimary->GetXYZ(posVtx); | |
483 | //return v0->NormalizedDecayLength(posVtx); | |
484 | return v0->NormalizedDecayLength(GetPrimaryVtx()); | |
485 | ||
486 | } | |
487 | //----------------------------------------------------------------------------- | |
488 | Double_t AliAODRecoCascadeHF::NormalizedV0DecayLengthXY() const | |
489 | { | |
490 | // | |
491 | // Returns transverse V0 normalized decay length wrt primary vertex | |
492 | // | |
493 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
494 | ||
495 | if (!v0) | |
496 | return -1.; | |
497 | //AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
498 | //Double_t posVtx[3] = {0.,0.,0.}; | |
499 | //vtxPrimary->GetXYZ(posVtx); | |
500 | //return v0->NormalizedDecayLengthXY(posVtx); | |
501 | return v0->NormalizedDecayLengthXY(GetPrimaryVtx()); | |
502 | ||
503 | } |