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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(); |
125 | if(!ndg) { | |
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()); |
36462b08 | 144 | lab2Prong = theV0->MatchToMC(pdgabs2prong,mcArray,2,pdgDg2prong); |
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 | |
151 | // loop on daughters and write labels | |
8862e6bf | 152 | for(Int_t i=0; i<ndg; i++) { |
ff12b981 | 153 | AliVTrack *trk = dynamic_cast<AliVTrack*>(GetDaughter(i)); |
4184976e | 154 | if(!trk) continue; |
b3999999 | 155 | Int_t lab = trk->GetLabel(); |
156 | if(lab==-1) { // this daughter is the 2prong | |
157 | lab=lab2Prong; | |
8cb66396 | 158 | } else if(lab<-1) continue; |
b3999999 | 159 | dgLabels[i] = lab; |
160 | } | |
161 | ||
e7af8919 | 162 | Int_t finalLabel = AliAODRecoDecay::MatchToMC(pdgabs,mcArray,dgLabels,2,2,pdgDg); |
9ff3fa8f | 163 | |
164 | if (finalLabel>=0){ | |
165 | // debug printouts for Lc->V0 bachelor case | |
166 | ||
167 | if ( isV0 && (dgLabels[0]!=-1 && dgLabels[1]!=-1) ) { | |
ff12b981 | 168 | AliAODv0 *theV0 = dynamic_cast<AliAODv0*>(Getv0()); |
9ff3fa8f | 169 | Bool_t onTheFly = theV0->GetOnFlyStatus(); |
9ff3fa8f | 170 | if (pdgDg[0]==2212 && pdgDg[1]==310) { |
ff12b981 | 171 | AliAODMCParticle*k0s = dynamic_cast<AliAODMCParticle*>(mcArray->At(lab2Prong)); |
4184976e | 172 | if(k0s){ |
173 | Int_t labK0 = k0s->GetMother(); | |
174 | AliAODMCParticle*k0bar = dynamic_cast<AliAODMCParticle*>(mcArray->At(labK0)); | |
175 | if(k0bar){ | |
176 | AliDebug(1,Form(" (onTheFly=%1d) LabelV0=%d (%d) -> LabelK0S=%d (%d -> %d %d)",onTheFly,labK0,k0bar->GetPdgCode(),lab2Prong,pdgabs2prong,pdgDg2prong[0],pdgDg2prong[1])); | |
177 | AliDebug(1,Form(" LabelLc=%d (%d) -> LabelBachelor=%d (%d) LabelV0=%d (%d)", | |
178 | finalLabel,pdgabs, | |
179 | dgLabels[0],pdgDg[0],dgLabels[1],pdgDg[1])); | |
180 | } | |
181 | } | |
9ff3fa8f | 182 | } else if (pdgDg[0]==211 && pdgDg[1]==3122) { |
183 | AliDebug(1,Form(" (onTheFly=%1d) LabelV0=%d (%d -> %d %d)",onTheFly,lab2Prong,pdgabs2prong,pdgDg2prong[0],pdgDg2prong[1])); | |
184 | AliDebug(1,Form(" LabelLc=%d (%d) -> LabelBachelor=%d (%d) LabelV0=%d (%d)", | |
185 | finalLabel,pdgabs, | |
e7af8919 | 186 | dgLabels[0],pdgDg[0],dgLabels[1],pdgDg[1])); |
9ff3fa8f | 187 | } |
188 | ||
e7af8919 | 189 | } |
190 | } | |
191 | ||
192 | return finalLabel; | |
193 | ||
b3999999 | 194 | } |
05d80dd6 | 195 | //----------------------------------------------------------------------------- |
196 | Bool_t AliAODRecoCascadeHF::SelectDstar(const Double_t *cutsDstar, | |
197 | const Double_t *cutsD0, | |
198 | Bool_t testD0) const | |
199 | { | |
200 | // | |
201 | // cutsDstar[0] = inv. mass half width of D* [GeV] | |
202 | // cutsDstar[1] = half width of (M_Kpipi-M_D0) [GeV] | |
203 | // cutsDstar[2] = PtMin of pi_s [GeV/c] | |
204 | // cutsDstar[3] = PtMax of pi_s [GeV/c] | |
205 | // cutsDstar[4] = theta, angle between the pi_s and decay plane of the D0 [rad] | |
206 | // | |
207 | // cutsD0[0] = inv. mass half width [GeV] | |
208 | // cutsD0[1] = dca [cm] | |
209 | // cutsD0[2] = cosThetaStar | |
210 | // cutsD0[3] = pTK [GeV/c] | |
211 | // cutsD0[4] = pTPi [GeV/c] | |
212 | // cutsD0[5] = d0K [cm] upper limit! | |
213 | // cutsD0[6] = d0Pi [cm] upper limit! | |
214 | // cutsD0[7] = d0d0 [cm^2] | |
215 | // cutsD0[8] = cosThetaPoint | |
216 | ||
217 | ||
218 | // check that the D0 passes the cuts | |
219 | // (if we have a D*+, it has to pass as D0, | |
220 | // if we have a D*-, it has to pass as D0bar) | |
221 | ||
222 | if(testD0) { | |
223 | Int_t okD0=0,okD0bar=0; | |
224 | Get2Prong()->SelectD0(cutsD0,okD0,okD0bar); | |
225 | if((Charge()==+1 && !okD0) || (Charge()==-1 && !okD0bar)) return kFALSE; | |
226 | } | |
227 | ||
228 | if( (PtProng(0)<cutsDstar[2]) || (PtProng(0)>cutsDstar[3]) ) return kFALSE; | |
229 | ||
230 | Double_t mDstar = TDatabasePDG::Instance()->GetParticle(413)->Mass(); | |
231 | Double_t invmDstar = InvMassDstarKpipi(); | |
232 | if(TMath::Abs(mDstar-invmDstar)>cutsDstar[0]) return kFALSE; | |
233 | ||
234 | Double_t mD0 = TDatabasePDG::Instance()->GetParticle(421)->Mass(); | |
235 | if(TMath::Abs((mDstar-mD0)-DeltaInvMass())>cutsDstar[1]) return kFALSE; | |
236 | ||
3f6adfc9 | 237 | Double_t theta = AngleD0dkpPisoft(); |
05d80dd6 | 238 | if(theta>cutsDstar[4]) return kFALSE; |
05d80dd6 | 239 | |
240 | return kTRUE; | |
241 | } | |
a07ad8e0 | 242 | //----------------------------------------------------------------------------- |
243 | Bool_t AliAODRecoCascadeHF::SelectLctoV0(const Double_t *cutsLctoV0, | |
9ff3fa8f | 244 | Bool_t okLck0sp, Bool_t okLcLpi, Bool_t okLcLbarpi) const |
a07ad8e0 | 245 | { |
246 | // cuts on Lambdac candidates to V0+bachelor | |
247 | // (to be passed to AliAODRecoDecayHF3Prong::SelectLctoV0()) | |
248 | // 0 = inv. mass half width in K0s hypothesis [GeV] | |
249 | // 1 = inv. mass half width in Lambda hypothesis [GeV] | |
250 | // 2 = inv. mass V0 in K0s hypothesis half width [GeV] | |
251 | // 3 = inv. mass V0 in Lambda hypothesis half width [GeV] | |
252 | // 4 = pT min Bachelor track [GeV/c] | |
253 | // 5 = pT min V0-Positive track [GeV/c] | |
254 | // 6 = pT min V0-Negative track [GeV/c] | |
9ff3fa8f | 255 | // 7 = dca cut on the cascade (cm) |
256 | // 8 = dca cut on the V0 (cm) | |
a07ad8e0 | 257 | |
9ff3fa8f | 258 | // if ( !Getv0() || !Getv0PositiveTrack() || !Getv0NegativeTrack() ) |
259 | // { AliInfo(Form("Not adapted for ESDv0s, return true...")); return false; } | |
a07ad8e0 | 260 | |
261 | Double_t mLck0sp,mLcLpi; | |
9ff3fa8f | 262 | okLck0sp=1; okLcLpi=1; okLcLbarpi=1; |
a07ad8e0 | 263 | |
264 | Double_t mLcPDG = TDatabasePDG::Instance()->GetParticle(4122)->Mass(); | |
265 | Double_t mk0sPDG = TDatabasePDG::Instance()->GetParticle(310)->Mass(); | |
266 | Double_t mLPDG = TDatabasePDG::Instance()->GetParticle(3122)->Mass(); | |
267 | ||
268 | // k0s + p | |
269 | double mk0s = Getv0()->MassK0Short(); | |
270 | mLck0sp = InvMassLctoK0sP(); | |
271 | ||
272 | // lambda + pi | |
273 | double mlambda = Getv0()->MassLambda(); | |
274 | double malambda = Getv0()->MassAntiLambda(); | |
275 | mLcLpi = InvMassLctoLambdaPi(); | |
276 | ||
277 | // cut on Lc mass | |
278 | // with k0s p hypothesis | |
279 | if(TMath::Abs(mLck0sp-mLcPDG)>cutsLctoV0[0]) okLck0sp = 0; | |
280 | // with Lambda pi hypothesis | |
281 | if(TMath::Abs(mLcLpi-mLcPDG)>cutsLctoV0[1]) okLcLpi = 0; | |
9ff3fa8f | 282 | okLcLbarpi = okLcLpi; |
283 | ||
a07ad8e0 | 284 | // cuts on the v0 mass |
9ff3fa8f | 285 | if( TMath::Abs(mk0s-mk0sPDG)>cutsLctoV0[2]) okLck0sp = 0; |
286 | //if( TMath::Abs(mlambda-mLPDG)>cutsLctoV0[3] && | |
287 | //TMath::Abs(malambda-mLPDG)>cutsLctoV0[3] ) okLcLpi = 0; | |
288 | if( !(GetBachelor()->Charge()==+1 && TMath::Abs(mlambda-mLPDG)<=cutsLctoV0[3]) ) okLcLpi = 0; | |
289 | if( !(GetBachelor()->Charge()==-1 && TMath::Abs(malambda-mLPDG)<=cutsLctoV0[3]) ) okLcLbarpi = 0; | |
a07ad8e0 | 290 | |
9ff3fa8f | 291 | if(!okLck0sp && !okLcLpi && !okLcLbarpi) return 0; |
a07ad8e0 | 292 | |
293 | // cuts on the minimum pt of the tracks | |
294 | if(TMath::Abs(GetBachelor()->Pt()) < cutsLctoV0[4]) return 0; | |
295 | if(TMath::Abs(Getv0PositiveTrack()->Pt()) < cutsLctoV0[5]) return 0; | |
296 | if(TMath::Abs(Getv0NegativeTrack()->Pt()) < cutsLctoV0[6]) return 0; | |
297 | ||
a07ad8e0 | 298 | // cut on the cascade dca |
9ff3fa8f | 299 | if( TMath::Abs(GetDCA(0))>cutsLctoV0[7] //|| |
300 | //TMath::Abs(Getv0()->DcaPosToPrimVertex())>cutsLctoV0[7] || | |
301 | //TMath::Abs(Getv0()->DcaNegToPrimVertex())>cutsLctoV0[7] | |
302 | ) return 0; | |
303 | ||
304 | // cut on the v0 dca | |
305 | if(TMath::Abs(Getv0()->DcaV0Daughters()) > cutsLctoV0[8]) return 0; | |
306 | ||
307 | // cut on V0 cosine of pointing angle wrt PV | |
308 | if (CosV0PointingAngle() < cutsLctoV0[9]) { // cosine of V0 pointing angle wrt primary vertex | |
309 | AliDebug(4,Form(" V0 cosine of pointing angle doesn't pass the cut")); | |
310 | return 0; | |
311 | } | |
312 | ||
313 | // cut on bachelor transverse impact parameter wrt PV | |
314 | if (TMath::Abs(Getd0Prong(0)) > cutsLctoV0[10]) { // bachelor transverse impact parameter wrt PV | |
315 | AliDebug(4,Form(" bachelor transverse impact parameter doesn't pass the cut")); | |
316 | return 0; | |
317 | } | |
318 | ||
319 | // cut on V0 transverse impact parameter wrt PV | |
320 | if (TMath::Abs(Getd0Prong(1)) > cutsLctoV0[11]) { // V0 transverse impact parameter wrt PV | |
321 | AliDebug(4,Form(" V0 transverse impact parameter doesn't pass the cut")); | |
322 | return 0; | |
323 | } | |
324 | ||
325 | // cut on K0S invariant mass veto | |
326 | if (TMath::Abs(Getv0()->MassK0Short()-mk0sPDG) < cutsLctoV0[12]) { // K0S invariant mass veto | |
327 | AliDebug(4,Form(" veto on K0S invariant mass doesn't pass the cut")); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | // cut on Lambda/LambdaBar invariant mass veto | |
332 | if (TMath::Abs(Getv0()->MassLambda()-mLPDG) < cutsLctoV0[13] || | |
333 | TMath::Abs(Getv0()->MassAntiLambda()-mLPDG) < cutsLctoV0[13] ) { // Lambda/LambdaBar 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 gamma invariant mass veto | |
339 | if (Getv0()->InvMass2Prongs(0,1,11,11) < cutsLctoV0[14]) { // K0S invariant mass veto | |
340 | AliDebug(4,Form(" veto on gamma invariant mass doesn't pass the cut")); | |
341 | return 0; | |
342 | } | |
343 | ||
344 | // cut on V0 pT min | |
345 | if (Getv0()->Pt() < cutsLctoV0[15]) { // V0 pT min | |
346 | AliDebug(4,Form(" V0 track Pt=%2.2e > %2.2e",Getv0()->Pt(),cutsLctoV0[15])); | |
347 | return 0; | |
348 | } | |
a07ad8e0 | 349 | |
350 | return true; | |
351 | ||
352 | } | |
353 | //----------------------------------------------------------------------------- | |
3f6adfc9 | 354 | Double_t AliAODRecoCascadeHF::AngleD0dkpPisoft() const { |
355 | // | |
356 | // Angle of soft pion to D0 decay plane | |
357 | // | |
358 | ||
359 | TVector3 p3Trk0(Get2Prong()->PxProng(0),Get2Prong()->PyProng(0),Get2Prong()->PzProng(0)); // from D0 | |
360 | TVector3 p3Trk1(Get2Prong()->PxProng(1),Get2Prong()->PyProng(1),Get2Prong()->PzProng(1)); // from D0 | |
361 | TVector3 p3Trk2(PxProng(0),PyProng(0),PzProng(0)); // pi_s | |
362 | ||
363 | TVector3 perp = p3Trk0.Cross(p3Trk1); | |
364 | Double_t theta = p3Trk2.Angle(perp); | |
365 | if(theta>(TMath::Pi()-theta)) theta = TMath::Pi() - theta; | |
366 | theta = TMath::Pi()/2. - theta; | |
367 | ||
368 | return theta; | |
369 | } | |
ccfae9f3 | 370 | //----------------------------------------------------------------------------- |
371 | Bool_t AliAODRecoCascadeHF::TrigonometricalCut() const { | |
372 | // | |
373 | // Trigonometrical constraint | |
374 | // | |
375 | TVector3 p3Trk0(Get2Prong()->PxProng(0),Get2Prong()->PyProng(0),Get2Prong()->PzProng(0)); // from D0 | |
376 | TVector3 p3Trk1(Get2Prong()->PxProng(1),Get2Prong()->PyProng(1),Get2Prong()->PzProng(1)); // from D0 | |
377 | TVector3 p3Trk2(PxProng(0),PyProng(0),PzProng(0)); // pi_s | |
378 | ||
379 | Double_t alpha = p3Trk0.Angle(p3Trk2); | |
380 | Double_t beta = p3Trk1.Angle(p3Trk2); | |
381 | ||
382 | Double_t cosphi01 = TMath::Cos(alpha) / TMath::Cos(AngleD0dkpPisoft()); | |
383 | Double_t cosphi02 = TMath::Cos(beta) / TMath::Cos(AngleD0dkpPisoft()); | |
384 | ||
385 | Double_t phi01 = TMath::ACos(cosphi01); | |
386 | Double_t phi02 = TMath::ACos(cosphi02); | |
387 | Double_t phi00 = p3Trk0.Angle(p3Trk1); | |
388 | ||
389 | if((phi01>phi00) || (phi02>phi00)) return kFALSE; | |
390 | return kTRUE; | |
391 | } | |
8cb66396 | 392 | |
c9283e92 | 393 | //----------------------------------------------------------------------------- |
394 | Double_t AliAODRecoCascadeHF::DecayLengthV0() const | |
395 | { | |
396 | // | |
397 | // Returns V0 decay length wrt primary vertex | |
398 | // | |
399 | ||
400 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
401 | ||
402 | if (!v0) | |
403 | return -1.; | |
404 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
405 | Double_t posVtx[3] = {0.,0.,0.}; | |
406 | vtxPrimary->GetXYZ(posVtx); | |
407 | return v0->DecayLengthV0(posVtx); | |
408 | ||
409 | } | |
9ff3fa8f | 410 | //----------------------------------------------------------------------------- |
411 | Double_t AliAODRecoCascadeHF::DecayLengthXYV0() const | |
412 | { | |
413 | // | |
414 | // Returns transverse V0 decay length wrt primary vertex | |
415 | // | |
416 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
417 | ||
418 | if (!v0) | |
419 | return -1.; | |
420 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
421 | Double_t posVtx[3] = {0.,0.,0.}; | |
422 | vtxPrimary->GetXYZ(posVtx); | |
423 | return v0->DecayLengthXY(posVtx); | |
424 | ||
425 | } | |
426 | //----------------------------------------------------------------------------- | |
427 | Double_t AliAODRecoCascadeHF::CosV0PointingAngle() const | |
428 | { | |
429 | // | |
430 | // Returns cosine of V0 pointing angle wrt primary vertex | |
431 | // | |
432 | ||
433 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
434 | ||
435 | if (!v0) | |
436 | return -999.; | |
437 | ||
438 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
439 | Double_t posVtx[3] = {0.,0.,0.}; | |
440 | vtxPrimary->GetXYZ(posVtx); | |
441 | return v0->CosPointingAngle(posVtx); | |
442 | ||
443 | } | |
ff12b981 | 444 | //----------------------------------------------------------------------------- |
445 | Double_t AliAODRecoCascadeHF::CosV0PointingAngleXY() const | |
446 | { | |
447 | // | |
448 | // Returns XY cosine of V0 pointing angle wrt primary vertex | |
449 | // | |
450 | ||
451 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
452 | ||
453 | if (!v0) | |
454 | return -999.; | |
455 | ||
456 | AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
457 | Double_t posVtx[3] = {0.,0.,0.}; | |
458 | vtxPrimary->GetXYZ(posVtx); | |
459 | return v0->CosPointingAngleXY(posVtx); | |
460 | ||
461 | } | |
462 | //----------------------------------------------------------------------------- | |
463 | Double_t AliAODRecoCascadeHF::NormalizedV0DecayLength() const | |
464 | { | |
465 | // | |
466 | // Returns V0 normalized decay length wrt primary vertex | |
467 | // | |
468 | ||
469 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
470 | ||
471 | if (!v0) | |
472 | return -1.; | |
473 | //AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
474 | //Double_t posVtx[3] = {0.,0.,0.}; | |
475 | //vtxPrimary->GetXYZ(posVtx); | |
476 | //return v0->NormalizedDecayLength(posVtx); | |
477 | return v0->NormalizedDecayLength(GetPrimaryVtx()); | |
478 | ||
479 | } | |
480 | //----------------------------------------------------------------------------- | |
481 | Double_t AliAODRecoCascadeHF::NormalizedV0DecayLengthXY() const | |
482 | { | |
483 | // | |
484 | // Returns transverse V0 normalized decay length wrt primary vertex | |
485 | // | |
486 | AliAODv0 *v0 = (AliAODv0*)Getv0(); | |
487 | ||
488 | if (!v0) | |
489 | return -1.; | |
490 | //AliAODVertex *vtxPrimary = GetPrimaryVtx(); | |
491 | //Double_t posVtx[3] = {0.,0.,0.}; | |
492 | //vtxPrimary->GetXYZ(posVtx); | |
493 | //return v0->NormalizedDecayLengthXY(posVtx); | |
494 | return v0->NormalizedDecayLengthXY(GetPrimaryVtx()); | |
495 | ||
496 | } |