]> git.uio.no Git - u/mrichter/AliRoot.git/blame - ITS/AliITSV0Finder.cxx
git://git.uio.no / u / mrichter / AliRoot.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Added script to draw calibrated raw data
[u/mrichter/AliRoot.git] / ITS / AliITSV0Finder.cxx
CommitLineData
cd90f0a2 1/**************************************************************************\r
2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *\r
3 * *\r
4 * Author: The ALICE Off-line Project. *\r
5 * Contributors are mentioned in the code where appropriate. *\r
6 * *\r
7 * Permission to use, copy, modify and distribute this software and its *\r
8 * documentation strictly for non-commercial purposes is hereby granted *\r
9 * without fee, provided that the above copyright notice appears in all *\r
10 * copies and that both the copyright notice and this permission notice *\r
11 * appear in the supporting documentation. The authors make no claims *\r
12 * about the suitability of this software for any purpose. It is *\r
13 * provided "as is" without express or implied warranty. *\r
14 **************************************************************************/\r
15/* $Id$ */\r
16\r
17//-------------------------------------------------------------------------\r
18// Implementation of the on-the-fly v0 finder for ITS tracker MI\r
19// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch \r
20// Extraction from AliITStrackerMI: Andrea Dainese\r
21// Current support and development: \r
22//-------------------------------------------------------------------------\r
23\r
24#include <TMatrixD.h>\r
25#include <TTree.h>\r
26#include <TString.h>\r
27#include <TRandom.h>\r
28#include <TTreeStream.h>\r
29\r
30\r
31#include "AliLog.h"\r
32#include "AliESDVertex.h"\r
33#include "AliESDEvent.h"\r
34#include "AliESDtrack.h"\r
35#include "AliV0.h"\r
36#include "AliHelix.h"\r
37#include "AliITSRecPoint.h"\r
38#include "AliITSReconstructor.h"\r
39#include "AliITStrackerMI.h"\r
40#include "AliITSV0Finder.h"\r
767aaecb 41#include "AliKFParticle.h"\r
cd90f0a2 42\r
43ClassImp(AliITSV0Finder)\r
44\r
767aaecb 45\r
46AliITSV0Finder::AliITSV0Finder():\r
47fDebugStreamer(0)\r
48 {\r
cd90f0a2 49 //Default constructor\r
767aaecb 50\r
51 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");\r
52} \r
53\r
cd90f0a2 54//------------------------------------------------------------------------\r
55void AliITSV0Finder::UpdateTPCV0(const AliESDEvent *event,\r
56 AliITStrackerMI *tracker)\r
57{\r
58 //\r
59 //try to update, or reject TPC V0s\r
60 //\r
767aaecb 61 const Float_t kMinTgl2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl2();\r
62\r
cd90f0a2 63 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
64\r
65 Int_t nv0s = event->GetNumberOfV0s();\r
66 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
67\r
68 for (Int_t i=0;i<nv0s;i++){\r
69 AliESDv0 * vertex = event->GetV0(i);\r
70 Int_t ip = vertex->GetIndex(0);\r
71 Int_t im = vertex->GetIndex(1);\r
72 //\r
73 TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)trackHypothesys->At(ip):0;\r
74 TObjArray * arraym = (im<nitstracks) ? (TObjArray*)trackHypothesys->At(im):0;\r
75 AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;\r
76 AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;\r
77 //\r
78 //\r
79 if (trackp){\r
80 if (trackp->GetNumberOfClusters()+trackp->GetNDeadZone()>5.5){\r
81 if (trackp->GetConstrain()&&trackp->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
82 if (!trackp->GetConstrain()&&trackp->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
83 }\r
84 }\r
85\r
86 if (trackm){\r
87 if (trackm->GetNumberOfClusters()+trackm->GetNDeadZone()>5.5){\r
88 if (trackm->GetConstrain()&&trackm->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
89 if (!trackm->GetConstrain()&&trackm->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
90 }\r
91 }\r
92 if (vertex->GetStatus()==-100) continue;\r
93 //\r
94 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
95 Int_t clayer = tracker->GetNearestLayer(xrp); //I.B.\r
96 vertex->SetNBefore(clayer); //\r
97 vertex->SetChi2Before(9*clayer); //\r
98 vertex->SetNAfter(6-clayer); //\r
99 vertex->SetChi2After(0); //\r
100 //\r
101 if (clayer >1 ){ // calculate chi2 before vertex\r
102 Float_t chi2p = 0, chi2m=0; \r
103 //\r
104 if (trackp){\r
105 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
106 if (trackp->GetClIndex(ilayer)>=0){\r
107 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
108 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
109 }\r
110 else{\r
111 chi2p+=9;\r
112 }\r
113 }\r
114 }else{\r
115 chi2p = 9*clayer;\r
116 }\r
117 //\r
118 if (trackm){\r
119 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
120 if (trackm->GetClIndex(ilayer)>=0){\r
121 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
122 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
123 }\r
124 else{\r
125 chi2m+=9;\r
126 }\r
127 }\r
128 }else{\r
129 chi2m = 9*clayer;\r
130 }\r
131 vertex->SetChi2Before(TMath::Min(chi2p,chi2m));\r
132 if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex\r
133 }\r
134 \r
135 if (clayer < 5 ){ // calculate chi2 after vertex\r
136 Float_t chi2p = 0, chi2m=0; \r
137 //\r
767aaecb 138 if (trackp&&TMath::Abs(trackp->GetTgl())<kMinTgl2){\r
cd90f0a2 139 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
140 if (trackp->GetClIndex(ilayer)>=0){\r
141 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
142 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
143 }\r
144 else{\r
145 chi2p+=9;\r
146 }\r
147 }\r
148 }else{\r
149 chi2p = 0;\r
150 }\r
151 //\r
767aaecb 152 if (trackm&&TMath::Abs(trackm->GetTgl())<kMinTgl2){\r
cd90f0a2 153 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
154 if (trackm->GetClIndex(ilayer)>=0){\r
155 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
156 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
157 }\r
158 else{\r
159 chi2m+=9;\r
160 }\r
161 }\r
162 }else{\r
163 chi2m = 0;\r
164 }\r
165 vertex->SetChi2After(TMath::Max(chi2p,chi2m));\r
166 if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS\r
167 }\r
168 }\r
169 //\r
170}\r
171//------------------------------------------------------------------------\r
172void AliITSV0Finder::FindV02(AliESDEvent *event,\r
173 AliITStrackerMI *tracker) \r
174{\r
175 //\r
176 // V0 finder\r
177 //\r
178 // Cuts on DCA - R dependent\r
179 // max distance DCA between 2 tracks cut \r
180 // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);\r
181 //\r
767aaecb 182 const Float_t kMaxDist0 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist0();\r
183 const Float_t kMaxDist1 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist1();\r
184 const Float_t kMaxDist = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist();\r
185 const Float_t kMinPointAngle = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle();\r
186 const Float_t kMinPointAngle2 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle2();\r
187 const Float_t kMinR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinR();\r
188 const Float_t kMaxR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxR();\r
189 const Float_t kCausality0Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCausality0Cut();\r
190 const Float_t kLikelihood01Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood01Cut();\r
191 const Float_t kLikelihood1Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood1Cut();\r
192 const Float_t kCombinedCut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCombinedCut();\r
b47f2a3f 193 const Float_t kMinClFullTrk= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinClFullTrk();\r
767aaecb 194 const Float_t kMinTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl0();\r
195 const Float_t kMinTPCdensity= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTPCdensity();\r
196 const Float_t kMinTgl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl1();\r
197\r
198 const Float_t kMinchi2before0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before0();\r
199 const Float_t kMinchi2before1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before1();\r
200 const Float_t kMinchi2after0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after0();\r
201 const Float_t kMinchi2after1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after1();\r
202 const Float_t kAddchi2SharedCl= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2SharedCl();\r
203 const Float_t kAddchi2NegCl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl0();\r
204 const Float_t kAddchi2NegCl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl1();\r
205\r
206 const Float_t kSigp0Par0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par0();\r
207 const Float_t kSigp0Par1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par1();\r
208 const Float_t kSigp0Par2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par2();\r
209\r
210 const Float_t kSigpPar0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar0();\r
211 const Float_t kSigpPar1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar1();\r
212 const Float_t kSigpPar2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar2();\r
213 \r
cd90f0a2 214\r
215 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
216 TObjArray *bestHypothesys = tracker->GetBestHypothesys();\r
217 TObjArray *originalTracks = tracker->GetOriginal();\r
218 //\r
219 //\r
220 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
221 Int_t ntracks = event->GetNumberOfTracks(); \r
222 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
223 originalTracks->Expand(ntracks);\r
224 trackHypothesys->Expand(ntracks);\r
225 bestHypothesys->Expand(ntracks);\r
226 //\r
227 AliHelix * helixes = new AliHelix[ntracks+2];\r
228 TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain\r
229 TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain\r
230 TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain\r
231 Bool_t * forbidden = new Bool_t [ntracks+2];\r
232 Int_t *itsmap = new Int_t [ntracks+2];\r
233 Float_t *dist = new Float_t[ntracks+2];\r
234 Float_t *normdist0 = new Float_t[ntracks+2];\r
235 Float_t *normdist1 = new Float_t[ntracks+2];\r
236 Float_t *normdist = new Float_t[ntracks+2];\r
237 Float_t *norm = new Float_t[ntracks+2];\r
238 Float_t *maxr = new Float_t[ntracks+2];\r
239 Float_t *minr = new Float_t[ntracks+2];\r
240 Float_t *minPointAngle= new Float_t[ntracks+2];\r
241 //\r
242 AliV0 *pvertex = new AliV0;\r
243 AliITStrackMI * dummy= new AliITStrackMI;\r
244 dummy->SetLabel(0);\r
245 AliITStrackMI trackat0; //temporary track for DCA calculation\r
246 //\r
247 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
248 //\r
249 // make ITS - ESD map\r
250 //\r
251 for (Int_t itrack=0;itrack<ntracks+2;itrack++) {\r
252 itsmap[itrack] = -1;\r
253 forbidden[itrack] = kFALSE;\r
254 maxr[itrack] = kMaxR;\r
255 minr[itrack] = kMinR;\r
256 minPointAngle[itrack] = kMinPointAngle;\r
257 }\r
258 for (Int_t itrack=0;itrack<nitstracks;itrack++){\r
259 AliITStrackMI * original = (AliITStrackMI*)(originalTracks->At(itrack));\r
260 Int_t esdindex = original->GetESDtrack()->GetID();\r
261 itsmap[esdindex] = itrack;\r
262 }\r
263 //\r
264 // create ITS tracks from ESD tracks if not done before\r
265 //\r
266 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
267 if (itsmap[itrack]>=0) continue;\r
268 AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));\r
269 //tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());\r
270 //tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ(); \r
271 tpctrack->GetDZ(tracker->GetX(),tracker->GetY(),tracker->GetZ(),tpctrack->GetDP()); //I.B.\r
272 if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){\r
273 // tracks which can reach inner part of ITS\r
274 // propagate track to outer its volume - with correction for material\r
275 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(tpctrack); \r
276 }\r
277 itsmap[itrack] = nitstracks;\r
278 originalTracks->AddAt(tpctrack,nitstracks);\r
279 nitstracks++;\r
280 }\r
281 //\r
282 // fill temporary arrays\r
283 //\r
284 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
285 AliESDtrack * esdtrack = event->GetTrack(itrack);\r
286 Int_t itsindex = itsmap[itrack];\r
287 AliITStrackMI *original = (AliITStrackMI*)originalTracks->At(itsmap[itrack]);\r
288 if (!original) continue;\r
289 AliITStrackMI *bestConst = 0;\r
290 AliITStrackMI *bestLong = 0;\r
291 AliITStrackMI *best = 0; \r
292 //\r
293 //\r
294 TObjArray * array = (TObjArray*) trackHypothesys->At(itsindex);\r
295 Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();\r
296 // Get best track with vertex constrain\r
297 for (Int_t ih=0;ih<hentries;ih++){\r
298 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
299 if (!trackh->GetConstrain()) continue;\r
300 if (!bestConst) bestConst = trackh;\r
b47f2a3f 301 if (trackh->GetNumberOfClusters()>kMinClFullTrk){\r
cd90f0a2 302 bestConst = trackh; // full track - with minimal chi2\r
303 break;\r
304 }\r
305 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()) continue; \r
306 bestConst = trackh;\r
307 break;\r
308 }\r
309 // Get best long track without vertex constrain and best track without vertex constrain\r
310 for (Int_t ih=0;ih<hentries;ih++){\r
311 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
312 if (trackh->GetConstrain()) continue;\r
313 if (!best) best = trackh;\r
314 if (!bestLong) bestLong = trackh;\r
b47f2a3f 315 if (trackh->GetNumberOfClusters()>kMinClFullTrk){\r
cd90f0a2 316 bestLong = trackh; // full track - with minimal chi2\r
317 break;\r
318 }\r
319 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()) continue; \r
320 bestLong = trackh; \r
321 }\r
322 if (!best) {\r
323 best = original;\r
324 bestLong = original;\r
325 }\r
326 //I.B. trackat0 = *bestLong;\r
327 new (&trackat0) AliITStrackMI(*bestLong);\r
328 Double_t xx,yy,zz,alpha; \r
329 if (!bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz)) continue;\r
330 alpha = TMath::ATan2(yy,xx); \r
331 // if (!trackat0.Propagate(alpha,0)) continue; \r
332 trackat0.Propagate(alpha,0); //PH The check on the return value is temporarily disabled (bug 45751) \r
333 // calculate normalized distances to the vertex \r
334 //\r
335 Float_t ptfac = (1.+100.*TMath::Abs(trackat0.GetC()));\r
336 if ( bestLong->GetNumberOfClusters()>3 ){ \r
337 dist[itsindex] = trackat0.GetY();\r
338 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
339 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
340 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
341 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
342 if (!bestConst){\r
343 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<6) normdist[itsindex]*=2.;\r
344 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<5) normdist[itsindex]*=2.;\r
345 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<4) normdist[itsindex]*=2.;\r
346 }else{\r
347 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<6) normdist[itsindex]*=1.5;\r
348 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<5) normdist[itsindex]*=1.5;\r
349 }\r
350 }\r
351 else{ \r
352 if (bestConst&&bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5){\r
353 dist[itsindex] = bestConst->GetD(0);\r
354 norm[itsindex] = bestConst->GetDnorm(0);\r
355 normdist0[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
356 normdist1[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
357 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
358 }else{\r
359 dist[itsindex] = trackat0.GetY();\r
360 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
361 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
362 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
363 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
767aaecb 364 if (TMath::Abs(trackat0.GetTgl())>kMinTgl0){\r
cd90f0a2 365 if (normdist[itsindex]<3) forbidden[itsindex]=kTRUE;\r
366 if (normdist[itsindex]>3) {\r
367 minr[itsindex] = TMath::Max(Float_t(40.),minr[itsindex]);\r
368 }\r
369 }\r
370 }\r
371 }\r
372 //\r
373 //-----------------------------------------------------------\r
374 //Forbid primary track candidates - \r
375 //\r
376 //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");\r
377 //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");\r
378 //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");\r
379 //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");\r
380 //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");\r
381 //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");\r
382 //-----------------------------------------------------------\r
383 if (bestConst){\r
384 if (bestLong->GetNumberOfClusters()<4 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5) forbidden[itsindex]=kTRUE;\r
385 if (normdist[itsindex]<3 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>5.5) forbidden[itsindex]=kTRUE;\r
386 if (normdist[itsindex]<2 && bestConst->GetClIndex(0)>=0 && bestConst->GetClIndex(1)>=0 ) forbidden[itsindex]=kTRUE;\r
387 if (normdist[itsindex]<1 && bestConst->GetClIndex(0)>=0) forbidden[itsindex]=kTRUE;\r
388 if (normdist[itsindex]<4 && bestConst->GetNormChi2(0)<2) forbidden[itsindex]=kTRUE;\r
389 if (normdist[itsindex]<5 && bestConst->GetNormChi2(0)<1) forbidden[itsindex]=kTRUE; \r
390 if (bestConst->GetNormChi2(0)<2.5) {\r
391 minPointAngle[itsindex]= 0.9999;\r
392 maxr[itsindex] = 10;\r
393 }\r
394 }\r
395 //\r
396 //forbid daughter kink candidates\r
397 //\r
398 if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;\r
399 Bool_t isElectron = kTRUE;\r
400 Bool_t isProton = kTRUE;\r
401 Double_t pid[5];\r
402 esdtrack->GetESDpid(pid);\r
403 for (Int_t i=1;i<5;i++){\r
404 if (pid[0]<pid[i]) isElectron= kFALSE;\r
405 if (pid[4]<pid[i]) isProton= kFALSE;\r
406 }\r
407 if (isElectron){\r
408 forbidden[itsindex]=kFALSE; \r
409 normdist[itsindex]*=-1;\r
410 }\r
411 if (isProton){\r
412 if (normdist[itsindex]>2) forbidden[itsindex]=kFALSE; \r
413 normdist[itsindex]*=-1;\r
414 }\r
415\r
416 //\r
417 // Causality cuts in TPC volume\r
418 //\r
767aaecb 419 if (esdtrack->GetTPCdensity(0,10) >kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(110),maxr[itsindex]);\r
420 if (esdtrack->GetTPCdensity(10,30)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(120),maxr[itsindex]);\r
421 if (esdtrack->GetTPCdensity(20,40)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(130),maxr[itsindex]);\r
422 if (esdtrack->GetTPCdensity(30,50)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(140),maxr[itsindex]);\r
cd90f0a2 423 //\r
424 if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->GetNumberOfClusters()<3) minr[itsindex]=100; \r
425 //\r
426 //\r
767aaecb 427 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){\r
cd90f0a2 428 cstream<<"Track"<<\r
429 "Tr0.="<<best<<\r
430 "Tr1.="<<((bestConst)? bestConst:dummy)<<\r
431 "Tr2.="<<bestLong<<\r
432 "Tr3.="<<&trackat0<<\r
433 "Esd.="<<esdtrack<<\r
434 "Dist="<<dist[itsindex]<<\r
435 "ND0="<<normdist0[itsindex]<<\r
436 "ND1="<<normdist1[itsindex]<<\r
437 "ND="<<normdist[itsindex]<<\r
438 "Pz="<<primvertex[2]<<\r
439 "Forbid="<<forbidden[itsindex]<<\r
440 "\n";\r
441 //\r
442 }\r
443 trackarray.AddAt(best,itsindex);\r
444 trackarrayc.AddAt(bestConst,itsindex);\r
445 trackarrayl.AddAt(bestLong,itsindex);\r
446 new (&helixes[itsindex]) AliHelix(*best);\r
447 }\r
448 //\r
449 //\r
450 //\r
451 // first iterration of V0 finder\r
452 //\r
767aaecb 453\r
454\r
455\r
cd90f0a2 456 for (Int_t iesd0=0;iesd0<ntracks;iesd0++){\r
457 Int_t itrack0 = itsmap[iesd0];\r
458 if (forbidden[itrack0]) continue;\r
459 AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);\r
460 if (!btrack0) continue; \r
461 if (btrack0->GetSign()>0 && !AliITSReconstructor::GetRecoParam()->GetStoreLikeSignV0s()) continue;\r
462 AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);\r
463 //\r
464 for (Int_t iesd1=iesd0+1;iesd1<ntracks;iesd1++){\r
465 Int_t itrack1 = itsmap[iesd1];\r
466 if (forbidden[itrack1]) continue;\r
467\r
468 AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1); \r
469 if (!btrack1) continue;\r
470 if (btrack1->GetSign()<0 && !AliITSReconstructor::GetRecoParam()->GetStoreLikeSignV0s()) continue;\r
471 Bool_t isGold = kFALSE;\r
472 if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){\r
473 isGold = kTRUE;\r
474 }\r
475 AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);\r
476 AliHelix &h1 = helixes[itrack0];\r
477 AliHelix &h2 = helixes[itrack1];\r
478 //\r
479 // find linear distance\r
480 Double_t rmin =0;\r
481 //\r
482 //\r
483 //\r
484 Double_t phase[2][2],radius[2];\r
485 Int_t points = h1.GetRPHIintersections(h2, phase, radius);\r
486 if (points==0) continue;\r
487 Double_t delta[2]={1000000,1000000}; \r
488 rmin = radius[0];\r
489 h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);\r
490 if (points==2){ \r
491 if (radius[1]<rmin) rmin = radius[1];\r
492 h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);\r
493 }\r
494 rmin = TMath::Sqrt(rmin);\r
495 Double_t distance = 0;\r
496 Double_t radiusC = 0;\r
497 Int_t iphase = 0;\r
498 if (points==1 || delta[0]<delta[1]){\r
499 distance = TMath::Sqrt(delta[0]);\r
500 radiusC = TMath::Sqrt(radius[0]);\r
501 }else{\r
502 distance = TMath::Sqrt(delta[1]);\r
503 radiusC = TMath::Sqrt(radius[1]);\r
504 iphase=1;\r
505 }\r
506 if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])) continue;\r
507 if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])) continue; \r
508 Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1)); \r
509 if (distance>maxDist) continue;\r
510 Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);\r
511 if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) continue;\r
512 //\r
513 //\r
514 // Double_t distance = TestV0(h1,h2,pvertex,rmin);\r
515 //\r
516 // if (distance>maxDist) continue;\r
517 // if (pvertex->GetRr()<kMinR) continue;\r
518 // if (pvertex->GetRr()>kMaxR) continue;\r
519 AliITStrackMI * track0=btrack0;\r
520 AliITStrackMI * track1=btrack1;\r
521 // if (pvertex->GetRr()<3.5){ \r
522 if (radiusC<3.5){ \r
523 //use longest tracks inside the pipe\r
524 track0 = (AliITStrackMI*)trackarrayl.At(itrack0);\r
525 track1 = (AliITStrackMI*)trackarrayl.At(itrack1);\r
526 } \r
527 //\r
528 //\r
767aaecb 529 \r
530\r
531 \r
cd90f0a2 532 pvertex->SetParamN(*track0);\r
533 pvertex->SetParamP(*track1);\r
534 pvertex->Update(primvertex);\r
535 pvertex->SetClusters(track0->ClIndex(),track1->ClIndex()); // register clusters\r
536\r
767aaecb 537 AliKFParticle negKF( *(pvertex->GetParamN()) ,11);\r
538 AliKFParticle posKF( *(pvertex->GetParamP()) ,-11);\r
539\r
540 AliKFParticle v0KF(negKF,posKF);\r
541 Float_t v0KFchi2= v0KF.GetChi2();\r
542\r
543\r
cd90f0a2 544 if (pvertex->GetRr()<kMinR) continue;\r
545 if (pvertex->GetRr()>kMaxR) continue;\r
546 if (pvertex->GetV0CosineOfPointingAngle()<kMinPointAngle) continue;\r
547//Bo: if (pvertex->GetDist2()>maxDist) continue;\r
548 if (pvertex->GetDcaV0Daughters()>maxDist) continue;\r
549//Bo: pvertex->SetLab(0,track0->GetLabel());\r
550//Bo: pvertex->SetLab(1,track1->GetLabel());\r
551 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
552 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
553 // \r
554 AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy; \r
555 AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;\r
556\r
557 //\r
558 //\r
559 TObjArray * array0b = (TObjArray*)bestHypothesys->At(itrack0);\r
767aaecb 560 if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<kMinTgl1) {\r
cd90f0a2 561 tracker->SetCurrentEsdTrack(itrack0);\r
562 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack0),itrack0, kFALSE);\r
563 }\r
564 TObjArray * array1b = (TObjArray*)bestHypothesys->At(itrack1);\r
767aaecb 565 if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<kMinTgl1) { \r
cd90f0a2 566 tracker->SetCurrentEsdTrack(itrack1);\r
567 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack1),itrack1, kFALSE);\r
568 }\r
569 //\r
570 AliITStrackMI * track0b = (AliITStrackMI*)originalTracks->At(itrack0);\r
571 AliITStrackMI * track1b = (AliITStrackMI*)originalTracks->At(itrack1);\r
572 AliITStrackMI * track0l = (AliITStrackMI*)originalTracks->At(itrack0);\r
573 AliITStrackMI * track1l = (AliITStrackMI*)originalTracks->At(itrack1);\r
574 \r
767aaecb 575 Float_t minchi2before0=kMinchi2before0;\r
576 Float_t minchi2before1=kMinchi2before1;\r
577 Float_t minchi2after0 =kMinchi2after0;\r
578 Float_t minchi2after1 =kMinchi2after1;\r
cd90f0a2 579 Double_t xrp[3]; pvertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
580 Int_t maxLayer = tracker->GetNearestLayer(xrp); //I.B.\r
581 \r
582 if (array0b) for (Int_t i=0;i<5;i++){\r
583 // best track after vertex\r
584 AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);\r
585 if (!btrack) continue;\r
586 if (btrack->GetNumberOfClusters()>track0l->GetNumberOfClusters()) track0l = btrack; \r
587 // if (btrack->fX<pvertex->GetRr()-2.-0.5/(0.1+pvertex->GetAnglep()[2])) {\r
588 if (btrack->GetX()<pvertex->GetRr()-2.) {\r
589 if ( (maxLayer>i+2|| (i==0)) && btrack->GetNumberOfClusters()==(6-i)&&i<3){\r
590 Float_t sumchi2= 0;\r
591 Float_t sumn = 0;\r
592 if (maxLayer<3){ // take prim vertex as additional measurement\r
593 if (normdist[itrack0]>0 && htrackc0){\r
594 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack0]*normdist[itrack0],16.);\r
595 }else{\r
596 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack0]*normdist[itrack0]+3.),16.);\r
597 }\r
598 sumn += 3-maxLayer;\r
599 }\r
600 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
601 sumn+=1.; \r
602 if (btrack->GetClIndex(ilayer)<0){\r
767aaecb 603 sumchi2+=kAddchi2NegCl0;\r
cd90f0a2 604 continue;\r
605 }else{\r
606 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
607 for (Int_t itrack=0;itrack<4;itrack++){\r
608 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
609 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack0){\r
767aaecb 610 sumchi2+=kAddchi2SharedCl; //shared cluster\r
cd90f0a2 611 break;\r
612 }\r
613 }\r
614 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
615 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
616 }\r
617 }\r
618 sumchi2/=sumn;\r
619 if (sumchi2<minchi2before0) minchi2before0=sumchi2; \r
620 }\r
621 continue; //safety space - Geo manager will give exact layer\r
622 }\r
623 track0b = btrack;\r
624 minchi2after0 = btrack->GetNormChi2(i);\r
625 break;\r
626 }\r
627 if (array1b) for (Int_t i=0;i<5;i++){\r
628 // best track after vertex\r
629 AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);\r
630 if (!btrack) continue;\r
631 if (btrack->GetNumberOfClusters()>track1l->GetNumberOfClusters()) track1l = btrack; \r
632 // if (btrack->fX<pvertex->GetRr()-2-0.5/(0.1+pvertex->GetAnglep()[2])){\r
633 if (btrack->GetX()<pvertex->GetRr()-2){\r
634 if ((maxLayer>i+2 || (i==0))&&btrack->GetNumberOfClusters()==(6-i)&&(i<3)){\r
635 Float_t sumchi2= 0;\r
636 Float_t sumn = 0;\r
637 if (maxLayer<3){ // take prim vertex as additional measurement\r
638 if (normdist[itrack1]>0 && htrackc1){\r
639 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack1]*normdist[itrack1],16.);\r
640 }else{\r
641 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack1]*normdist[itrack1]+3.),16.);\r
642 }\r
643 sumn += 3-maxLayer;\r
644 }\r
645 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
646 sumn+=1.;\r
647 if (btrack->GetClIndex(ilayer)<0){\r
767aaecb 648 sumchi2+=kAddchi2NegCl1;\r
cd90f0a2 649 continue;\r
650 }else{\r
651 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
652 for (Int_t itrack=0;itrack<4;itrack++){\r
653 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
654 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack1){\r
767aaecb 655 sumchi2+=kAddchi2SharedCl; //shared cluster\r
cd90f0a2 656 break;\r
657 }\r
658 }\r
659 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
660 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
661 }\r
662 }\r
663 sumchi2/=sumn;\r
664 if (sumchi2<minchi2before1) minchi2before1=sumchi2; \r
665 }\r
666 continue; //safety space - Geo manager will give exact layer \r
667 }\r
668 track1b = btrack;\r
669 minchi2after1 = btrack->GetNormChi2(i);\r
670 break;\r
671 }\r
672 //\r
673 // position resolution - used for DCA cut\r
674 Float_t sigmad = track0b->GetSigmaY2()+track0b->GetSigmaZ2()+track1b->GetSigmaY2()+track1b->GetSigmaZ2()+\r
675 (track0b->GetX()-pvertex->GetRr())*(track0b->GetX()-pvertex->GetRr())*(track0b->GetSigmaSnp2()+track0b->GetSigmaTgl2())+\r
676 (track1b->GetX()-pvertex->GetRr())*(track1b->GetX()-pvertex->GetRr())*(track1b->GetSigmaSnp2()+track1b->GetSigmaTgl2());\r
677 sigmad =TMath::Sqrt(sigmad)+0.04;\r
678 if (pvertex->GetRr()>50){\r
679 Double_t cov0[15],cov1[15];\r
680 track0b->GetESDtrack()->GetInnerExternalCovariance(cov0);\r
681 track1b->GetESDtrack()->GetInnerExternalCovariance(cov1);\r
682 sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+\r
683 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+\r
684 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);\r
685 sigmad =TMath::Sqrt(sigmad)+0.05;\r
686 }\r
687 // \r
688 AliV0 vertex2;\r
689 vertex2.SetParamN(*track0b);\r
690 vertex2.SetParamP(*track1b);\r
691 vertex2.Update(primvertex);\r
692 //Bo: if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
693 if (vertex2.GetDcaV0Daughters()<=pvertex->GetDcaV0Daughters()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
694 pvertex->SetParamN(*track0b);\r
695 pvertex->SetParamP(*track1b);\r
696 pvertex->Update(primvertex);\r
697 pvertex->SetClusters(track0b->ClIndex(),track1b->ClIndex()); // register clusters\r
698 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
699 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
700 }\r
701 pvertex->SetDistSigma(sigmad);\r
702 //Bo: pvertex->SetDistNorm(pvertex->GetDist2()/sigmad); \r
703 pvertex->SetNormDCAPrim(normdist[itrack0],normdist[itrack1]);\r
704 //\r
705 // define likelihhod and causalities\r
706 //\r
707 Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26; \r
708 if (maxLayer<1){\r
709 Float_t fnorm0 = normdist[itrack0];\r
710 if (fnorm0<0) fnorm0*=-3;\r
711 Float_t fnorm1 = normdist[itrack1];\r
712 if (fnorm1<0) fnorm1*=-3;\r
713 if ((pvertex->GetAnglep()[2]>0.1) || ( (pvertex->GetRr()<10.5)&& pvertex->GetAnglep()[2]>0.05 ) || (pvertex->GetRr()<3)){\r
714 pb0 = TMath::Exp(-TMath::Min(fnorm0,Float_t(16.))/12.);\r
715 pb1 = TMath::Exp(-TMath::Min(fnorm1,Float_t(16.))/12.);\r
716 }\r
717 pvertex->SetChi2Before(normdist[itrack0]);\r
718 pvertex->SetChi2After(normdist[itrack1]); \r
719 pvertex->SetNAfter(0);\r
720 pvertex->SetNBefore(0);\r
721 }else{\r
722 pvertex->SetChi2Before(minchi2before0);\r
723 pvertex->SetChi2After(minchi2before1);\r
724 if (pvertex->GetAnglep()[2]>0.1 || ( pvertex->GetRr()<10.5 && pvertex->GetAnglep()[2]>0.05) || pvertex->GetRr()<3){\r
725 pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);\r
726 pb1 = TMath::Exp(-TMath::Min(minchi2before1,Float_t(16))/12.);\r
727 }\r
728 pvertex->SetNAfter(maxLayer);\r
729 pvertex->SetNBefore(maxLayer); \r
730 }\r
731 if (pvertex->GetRr()<90){\r
732 pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
733 pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
734 }\r
735 if (pvertex->GetRr()<20){\r
736 pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;\r
737 pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;\r
738 }\r
739 //\r
740 pvertex->SetCausality(pb0,pb1,pa0,pa1);\r
741 //\r
742 // Likelihood calculations - apply cuts\r
743 // \r
744 Bool_t v0OK = kTRUE;\r
745 Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];\r
746 p12 += pvertex->GetParamN()->GetParameter()[4]*pvertex->GetParamN()->GetParameter()[4];\r
747 p12 = TMath::Sqrt(p12); // "mean" momenta\r
767aaecb 748\r
749 Float_t sigmap0 = kSigp0Par0+kSigp0Par1/(kSigp0Par2+pvertex->GetRr()); \r
750 Float_t sigmap = kSigpPar0*sigmap0*(kSigpPar1+kSigpPar2*p12); // "resolution: of point angle - as a function of radius and momenta\r
751\r
cd90f0a2 752\r
753 Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);\r
754 Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*\r
755 TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));\r
756 //\r
757 //Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);\r
758 Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();\r
759 Float_t likelihood0 = (TMath::Exp(-lDistNorm)+0.1) *(pvertex->GetDcaV0Daughters()<0.5)*(lDistNorm<5);\r
760\r
761 Float_t likelihood1 = TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/sigmap)+\r
762 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(4.*sigmap))+\r
763 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(8.*sigmap))+\r
764 0.1*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/0.01);\r
765 //\r
766 if (causalityA<kCausality0Cut) v0OK = kFALSE;\r
767 if (TMath::Sqrt(likelihood0*likelihood1)<kLikelihood01Cut) v0OK = kFALSE;\r
768 if (likelihood1<kLikelihood1Cut) v0OK = kFALSE;\r
769 if (TMath::Power(likelihood0*likelihood1*causalityB,0.33)<kCombinedCut) v0OK = kFALSE;\r
770 \r
771 //\r
772 //\r
767aaecb 773 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){ \r
cd90f0a2 774 Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;\r
775 cstream<<"It0"<<\r
776 "Tr0.="<<track0<< //best without constrain\r
777 "Tr1.="<<track1<< //best without constrain \r
767aaecb 778 "posKF.="<<&posKF<< //KF from track0\r
779 "negKF.="<<&negKF<< //KF from track1\r
cd90f0a2 780 "Tr0B.="<<track0b<< //best without constrain after vertex\r
781 "Tr1B.="<<track1b<< //best without constrain after vertex \r
782 "Tr0C.="<<htrackc0<< //best with constrain if exist\r
783 "Tr1C.="<<htrackc1<< //best with constrain if exist\r
784 "Tr0L.="<<track0l<< //longest best \r
785 "Tr1L.="<<track1l<< //longest best\r
786 "Esd0.="<<track0->GetESDtrack()<< // esd track0 params\r
787 "Esd1.="<<track1->GetESDtrack()<< // esd track1 params\r
788 "V0.="<<pvertex<< //vertex properties\r
789 "V0b.="<<&vertex2<< //vertex properties at "best" track\r
767aaecb 790 "v0KF.="<<&v0KF<< //KF from pvertex\r
791 "chiKF.="<<v0KFchi2<< // chi2 from KF\r
cd90f0a2 792 "ND0="<<normdist[itrack0]<< //normalize distance for track0\r
793 "ND1="<<normdist[itrack1]<< //normalize distance for track1\r
794 "Gold="<<gold<< //\r
795 // "RejectBase="<<rejectBase<< //rejection in First itteration\r
796 "OK="<<v0OK<<\r
797 "rmin="<<rmin<<\r
798 "sigmad="<<sigmad<<\r
799 "\n";\r
800 } \r
801 //if (rejectBase) continue;\r
802 //\r
803 pvertex->SetStatus(0);\r
804 // if (rejectBase) {\r
805 // pvertex->SetStatus(-100);\r
806 //}\r
807 if (pvertex->GetV0CosineOfPointingAngle()>kMinPointAngle2) {\r
808 //Bo: pvertex->SetESDindexes(track0->GetESDtrack()->GetID(),track1->GetESDtrack()->GetID());\r
809 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());//Bo: consistency 0 for neg\r
810 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());//Bo: consistency 1 for pos\r
811 if (v0OK){\r
812 // AliV0vertex vertexjuri(*track0,*track1);\r
813 // vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());\r
814 // event->AddV0(&vertexjuri);\r
815 pvertex->SetStatus(100);\r
816 }\r
817 pvertex->SetOnFlyStatus(kTRUE);\r
818 pvertex->ChangeMassHypothesis(kK0Short);\r
819 event->AddV0(pvertex);\r
820 }\r
821 }\r
822 }\r
823 //\r
824 //\r
825 // delete temporary arrays\r
826 // \r
827 delete[] forbidden;\r
828 delete[] minPointAngle;\r
829 delete[] maxr;\r
830 delete[] minr;\r
831 delete[] norm;\r
832 delete[] normdist;\r
833 delete[] normdist1;\r
834 delete[] normdist0;\r
835 delete[] dist;\r
836 delete[] itsmap;\r
837 delete[] helixes;\r
838 delete pvertex;\r
839}\r
840//------------------------------------------------------------------------\r
841void AliITSV0Finder::RefitV02(const AliESDEvent *event,\r
842 AliITStrackerMI *tracker) \r
843{\r
844 //\r
845 //try to refit V0s in the third path of the reconstruction\r
846 //\r
847 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
848 //\r
849 Int_t nv0s = event->GetNumberOfV0s();\r
850 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
851 AliV0 v0temp;\r
852 for (Int_t iv0 = 0; iv0<nv0s;iv0++){\r
853 AliV0 * v0mi = (AliV0*)event->GetV0(iv0);\r
854 if (!v0mi) continue;\r
855 Int_t itrack0 = v0mi->GetIndex(0);\r
856 Int_t itrack1 = v0mi->GetIndex(1);\r
857 AliESDtrack *esd0 = event->GetTrack(itrack0);\r
858 AliESDtrack *esd1 = event->GetTrack(itrack1);\r
859 if (!esd0||!esd1) continue;\r
860 AliITStrackMI tpc0(*esd0); \r
861 AliITStrackMI tpc1(*esd1);\r
862 Double_t x,y,z; v0mi->GetXYZ(x,y,z); //I.B. \r
863 Double_t alpha =TMath::ATan2(y,x); //I.B.\r
864 if (v0mi->GetRr()>85){\r
865 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
866 v0temp.SetParamN(tpc0);\r
867 v0temp.SetParamP(tpc1);\r
868 v0temp.Update(primvertex);\r
767aaecb 869 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 870 "V0.="<<v0mi<<\r
871 "V0refit.="<<&v0temp<<\r
872 "Tr0.="<<&tpc0<<\r
873 "Tr1.="<<&tpc1<<\r
874 "\n";\r
875 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
876 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
877 v0mi->SetParamN(tpc0);\r
878 v0mi->SetParamP(tpc1);\r
879 v0mi->Update(primvertex);\r
880 }\r
881 }\r
882 continue;\r
883 }\r
884 if (v0mi->GetRr()>35){\r
885 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
886 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1);\r
887 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
888 v0temp.SetParamN(tpc0);\r
889 v0temp.SetParamP(tpc1);\r
890 v0temp.Update(primvertex);\r
767aaecb 891 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 892 "V0.="<<v0mi<<\r
893 "V0refit.="<<&v0temp<<\r
894 "Tr0.="<<&tpc0<<\r
895 "Tr1.="<<&tpc1<<\r
896 "\n";\r
897 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
898 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
899 v0mi->SetParamN(tpc0);\r
900 v0mi->SetParamP(tpc1);\r
901 v0mi->Update(primvertex);\r
902 } \r
903 }\r
904 continue;\r
905 }\r
906 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
907 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1); \r
908 // if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
909 if (tracker->RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && \r
910 tracker->RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){\r
911 v0temp.SetParamN(tpc0);\r
912 v0temp.SetParamP(tpc1);\r
913 v0temp.Update(primvertex);\r
767aaecb 914 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 915 "V0.="<<v0mi<<\r
916 "V0refit.="<<&v0temp<<\r
917 "Tr0.="<<&tpc0<<\r
918 "Tr1.="<<&tpc1<<\r
919 "\n";\r
920 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
921 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
922 v0mi->SetParamN(tpc0);\r
923 v0mi->SetParamP(tpc1);\r
924 v0mi->Update(primvertex);\r
925 } \r
926 } \r
927 }\r
928}\r
929//------------------------------------------------------------------------\r
767aaecb 930\r
931\r
932AliITSV0Finder::~AliITSV0Finder()\r
933{\r
934 //\r
935 //destructor\r
936 //\r
937 if (fDebugStreamer) {\r
938 //fDebugStreamer->Close();\r
939 delete fDebugStreamer;\r
940 }\r
941\r
942}\r