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Include the D* - first bunch: compiles but is not fully functional untill commit...
[u/mrichter/AliRoot.git] / PWG3 / vertexingHF / AliAnalysisVertexingHF.cxx
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6a213b59 1/**************************************************************************
2 * Copyright(c) 1998-2007, 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// Implementation of the heavy-flavour vertexing analysis class
dcb444c9 18// Candidates are stored in the AOD as objects deriving from AliAODRecoDecay.
19// To be used as a task of AliAnalysisManager by means of the interface
20// class AliAnalysisTaskSEVertexingHF.
21// An example of usage in the macro AliAnalysisTaskSEVertexingHFTest.C.
6a213b59 22//
2ff20727 23// Origin: E.Bruna, G.E.Bruno, A.Dainese, F.Prino, R.Romita, X.M.Zhang
b056c5e3 24// Contact: andrea.dainese@lnl.infn.it
6a213b59 25//----------------------------------------------------------------------------
b82f6d67 26#include <TFile.h>
6a213b59 27#include <TDatabasePDG.h>
28#include <TString.h>
dcb444c9 29#include "AliLog.h"
30#include "AliVEvent.h"
31#include "AliVVertex.h"
32#include "AliVTrack.h"
6a213b59 33#include "AliVertexerTracks.h"
a353d2e4 34#include "AliKFVertex.h"
dcb444c9 35#include "AliESDEvent.h"
6a213b59 36#include "AliESDVertex.h"
dcb444c9 37#include "AliESDtrack.h"
f8fa4595 38#include "AliESDtrackCuts.h"
b056c5e3 39#include "AliAODEvent.h"
6a213b59 40#include "AliAODRecoDecay.h"
41#include "AliAODRecoDecayHF.h"
42#include "AliAODRecoDecayHF2Prong.h"
43#include "AliAODRecoDecayHF3Prong.h"
44#include "AliAODRecoDecayHF4Prong.h"
2ff20727 45#include "AliAODRecoCascadeHF.h"
f8fa4595 46#include "AliAnalysisFilter.h"
6a213b59 47#include "AliAnalysisVertexingHF.h"
48
49ClassImp(AliAnalysisVertexingHF)
50
51//----------------------------------------------------------------------------
52AliAnalysisVertexingHF::AliAnalysisVertexingHF():
dcb444c9 53fInputAOD(kFALSE),
54fAODMap(0),
b82f6d67 55fBzkG(0.),
56fSecVtxWithKF(kFALSE),
6a213b59 57fRecoPrimVtxSkippingTrks(kFALSE),
58fRmTrksFromPrimVtx(kFALSE),
59fV1(0x0),
b82f6d67 60fD0toKpi(kTRUE),
61fJPSItoEle(kTRUE),
62f3Prong(kTRUE),
63f4Prong(kTRUE),
2ff20727 64fDstar(kTRUE),
65fTrackFilter(0x0),
66fTrackFilterSoftPi(0x0)
6a213b59 67{
68 // Default constructor
69
70 SetD0toKpiCuts();
71 SetBtoJPSICuts();
72 SetDplusCuts();
b82f6d67 73 SetDsCuts();
74 SetLcCuts();
2ff20727 75 SetDstarCuts();
f8fa4595 76
6a213b59 77}
13977a79 78//--------------------------------------------------------------------------
79AliAnalysisVertexingHF::AliAnalysisVertexingHF(const AliAnalysisVertexingHF &source) :
80TNamed(source),
dcb444c9 81fInputAOD(source.fInputAOD),
82fAODMap(source.fAODMap),
b82f6d67 83fBzkG(source.fBzkG),
84fSecVtxWithKF(source.fSecVtxWithKF),
13977a79 85fRecoPrimVtxSkippingTrks(source.fRecoPrimVtxSkippingTrks),
86fRmTrksFromPrimVtx(source.fRmTrksFromPrimVtx),
87fV1(source.fV1),
13977a79 88fD0toKpi(source.fD0toKpi),
89fJPSItoEle(source.fJPSItoEle),
90f3Prong(source.f3Prong),
91f4Prong(source.f4Prong),
2ff20727 92fDstar(source.fDstar),
93fTrackFilter(source.fTrackFilter),
94fTrackFilterSoftPi(source.fTrackFilterSoftPi)
13977a79 95{
96 //
97 // Copy constructor
98 //
99 for(Int_t i=0; i<9; i++) fD0toKpiCuts[i]=source.fD0toKpiCuts[i];
100 for(Int_t i=0; i<9; i++) fBtoJPSICuts[i]=source.fBtoJPSICuts[i];
101 for(Int_t i=0; i<12; i++) fDplusCuts[i]=source.fDplusCuts[i];
2ff20727 102 for(Int_t i=0; i<13; i++) fDsCuts[i]=source.fDsCuts[i];
103 for(Int_t i=0; i<12; i++) fLcCuts[i]=source.fLcCuts[i];
104 for(Int_t i=0; i<5; i++) fDstarCuts[i]=source.fDstarCuts[i];
13977a79 105}
106//--------------------------------------------------------------------------
107AliAnalysisVertexingHF &AliAnalysisVertexingHF::operator=(const AliAnalysisVertexingHF &source)
108{
109 //
110 // assignment operator
111 //
112 if(&source == this) return *this;
dcb444c9 113 fInputAOD = source.fInputAOD;
b82f6d67 114 fBzkG = source.fBzkG;
115 fSecVtxWithKF = source.fSecVtxWithKF;
13977a79 116 fRecoPrimVtxSkippingTrks = source.fRecoPrimVtxSkippingTrks;
117 fRmTrksFromPrimVtx = source.fRmTrksFromPrimVtx;
118 fV1 = source.fV1;
13977a79 119 fD0toKpi = source.fD0toKpi;
120 fJPSItoEle = source.fJPSItoEle;
121 f3Prong = source.f3Prong;
122 f4Prong = source.f4Prong;
2ff20727 123 fDstar = source.fDstar;
f8fa4595 124 fTrackFilter = source.fTrackFilter;
2ff20727 125 fTrackFilterSoftPi = source.fTrackFilterSoftPi;
13977a79 126
127 for(Int_t i=0; i<9; i++) fD0toKpiCuts[i]=source.fD0toKpiCuts[i];
128 for(Int_t i=0; i<9; i++) fBtoJPSICuts[i]=source.fBtoJPSICuts[i];
129 for(Int_t i=0; i<12; i++) fDplusCuts[i]=source.fDplusCuts[i];
2ff20727 130 for(Int_t i=0; i<13; i++) fDsCuts[i]=source.fDsCuts[i];
131 for(Int_t i=0; i<12; i++) fLcCuts[i]=source.fLcCuts[i];
132 for(Int_t i=0; i<5; i++) fDstarCuts[i]=source.fDstarCuts[i];
13977a79 133
134 return *this;
135}
6a213b59 136//----------------------------------------------------------------------------
137AliAnalysisVertexingHF::~AliAnalysisVertexingHF() {
138 // Destructor
13977a79 139 if(fV1) { delete fV1; fV1=0; }
f8fa4595 140 if(fTrackFilter) { delete fTrackFilter; fTrackFilter=0; }
2ff20727 141 if(fTrackFilterSoftPi) { delete fTrackFilterSoftPi; fTrackFilterSoftPi=0; }
6a213b59 142}
143//----------------------------------------------------------------------------
dcb444c9 144void AliAnalysisVertexingHF::FindCandidates(AliVEvent *event,
145 TClonesArray *aodVerticesHFTClArr,
146 TClonesArray *aodD0toKpiTClArr,
147 TClonesArray *aodJPSItoEleTClArr,
148 TClonesArray *aodCharm3ProngTClArr,
2ff20727 149 TClonesArray *aodCharm4ProngTClArr,
150 TClonesArray *aodDstarTClArr)
b056c5e3 151{
152 // Find heavy-flavour vertex candidates
dcb444c9 153 // Input: ESD or AOD
b056c5e3 154 // Output: AOD (additional branches added)
155
dcb444c9 156
157 TString evtype = event->IsA()->GetName();
158 fInputAOD = ((evtype=="AliAODEvent") ? kTRUE : kFALSE);
159
b056c5e3 160 if(!aodVerticesHFTClArr) {
161 printf("ERROR: no aodVerticesHFTClArr");
162 return;
163 }
164 if(fD0toKpi && !aodD0toKpiTClArr) {
165 printf("ERROR: no aodD0toKpiTClArr");
166 return;
167 }
168 if(fJPSItoEle && !aodJPSItoEleTClArr) {
169 printf("ERROR: no aodJPSItoEleTClArr");
170 return;
171 }
172 if(f3Prong && !aodCharm3ProngTClArr) {
173 printf("ERROR: no aodCharm3ProngTClArr");
174 return;
175 }
176 if(f4Prong && !aodCharm4ProngTClArr) {
177 printf("ERROR: no aodCharm4ProngTClArr");
178 return;
179 }
2ff20727 180 if(fDstar && !aodDstarTClArr) {
181 printf("ERROR: no aodDstarTClArr");
182 return;
183 }
b056c5e3 184
185 // delete candidates from previous event and create references
2ff20727 186 Int_t iVerticesHF=0,iD0toKpi=0,iJPSItoEle=0,i3Prong=0,i4Prong=0,iDstar=0;
b056c5e3 187 aodVerticesHFTClArr->Delete();
188 iVerticesHF = aodVerticesHFTClArr->GetEntriesFast();
189 TClonesArray &verticesHFRef = *aodVerticesHFTClArr;
190 if(fD0toKpi) {
191 aodD0toKpiTClArr->Delete();
192 iD0toKpi = aodD0toKpiTClArr->GetEntriesFast();
193 }
194 if(fJPSItoEle) {
195 aodJPSItoEleTClArr->Delete();
196 iJPSItoEle = aodJPSItoEleTClArr->GetEntriesFast();
197 }
198 if(f3Prong) {
199 aodCharm3ProngTClArr->Delete();
200 i3Prong = aodCharm3ProngTClArr->GetEntriesFast();
201 }
202 if(f4Prong) {
203 aodCharm4ProngTClArr->Delete();
204 i4Prong = aodCharm4ProngTClArr->GetEntriesFast();
205 }
2ff20727 206 if(fDstar) {
207 aodDstarTClArr->Delete();
208 iDstar = aodDstarTClArr->GetEntriesFast();
209 }
210 TClonesArray &aodD0toKpiRef = *aodD0toKpiTClArr;
211 TClonesArray &aodJPSItoEleRef = *aodJPSItoEleTClArr;
212 TClonesArray &aodCharm3ProngRef = *aodCharm3ProngTClArr;
213 TClonesArray &aodCharm4ProngRef = *aodCharm4ProngTClArr;
214 TClonesArray &aodDstarRef = *aodDstarTClArr;
b056c5e3 215
216
2ff20727 217 AliAODRecoDecayHF2Prong *io2Prong = 0;
218 AliAODRecoDecayHF3Prong *io3Prong = 0;
219 AliAODRecoDecayHF4Prong *io4Prong = 0;
220 AliAODRecoCascadeHF *ioCascade = 0;
b056c5e3 221
2ff20727 222 Int_t iTrkP1,iTrkP2,iTrkN1,iTrkN2,iTrkSoftPi,trkEntries;
223 Double_t xdummy,ydummy,dcap1n1,dcap1n2,dcap2n1,dcap1p2,dcan1n2,dcaCasc;
b056c5e3 224 Bool_t okD0=kFALSE,okJPSI=kFALSE,ok3Prong=kFALSE,ok4Prong=kFALSE;
2ff20727 225 Bool_t okDstar=kFALSE,okD0fromDstar=kFALSE;
b056c5e3 226 AliESDtrack *postrack1 = 0;
227 AliESDtrack *postrack2 = 0;
228 AliESDtrack *negtrack1 = 0;
229 AliESDtrack *negtrack2 = 0;
2ff20727 230 AliESDtrack *trackPi = 0;
b056c5e3 231 Double_t dcaMax = fD0toKpiCuts[1];
232 if(dcaMax < fBtoJPSICuts[1]) dcaMax=fBtoJPSICuts[1];
233 if(dcaMax < fDplusCuts[11]) dcaMax=fDplusCuts[11];
dcb444c9 234 AliDebug(2,Form(" dca cut set to %f cm",dcaMax));
b056c5e3 235
b056c5e3 236
dcb444c9 237 // get Bz
238 fBzkG = (Double_t)event->GetMagneticField();
b056c5e3 239
dcb444c9 240 trkEntries = (Int_t)event->GetNumberOfTracks();
241 AliDebug(1,Form(" Number of tracks: %d",trkEntries));
357cd934 242
243 if(trkEntries<2) {
244 AliDebug(1,Form(" Not enough tracks: %d",trkEntries));
245 return;
246 }
b056c5e3 247
357cd934 248 const AliVVertex *primary = event->GetPrimaryVertex();
249 if(!primary) {
250 AliDebug(1," No primary vertex from tracks");
251 return;
252 }
253 TString primTitle = primary->GetTitle();
254 if(!primTitle.Contains("VertexerTracks")) {
255 AliDebug(1," No primary vertex from tracks");
b056c5e3 256 return;
257 }
258
dcb444c9 259 // call function that applies sigle-track selection,
2ff20727 260 // for displaced tracks and soft pions (both charges) for D*,
dcb444c9 261 // and retrieves primary vertex
2ff20727 262 TObjArray seleTrksArray(trkEntries);
263 UChar_t *seleFlags = new UChar_t[trkEntries]; // bit 0: displaced, bit 1: softpi
264 Int_t nSeleTrks=0;
265 SelectTracksAndCopyVertex(event,seleTrksArray,nSeleTrks,seleFlags);
b056c5e3 266
2ff20727 267 AliDebug(1,Form(" Selected tracks: %d",nSeleTrks));
b056c5e3 268
2ff20727 269 TObjArray *twoTrackArray1 = new TObjArray(2);
270 TObjArray *twoTrackArray2 = new TObjArray(2);
271 TObjArray *twoTrackArrayCasc = new TObjArray(2);
272 TObjArray *threeTrackArray = new TObjArray(3);
273 TObjArray *fourTrackArray = new TObjArray(4);
b056c5e3 274
dcb444c9 275 Double_t dispersion;
276
2ff20727 277 AliAODRecoDecayHF *rd = 0;
278 AliAODRecoCascadeHF *rc = 0;
279
b056c5e3 280 // LOOP ON POSITIVE TRACKS
2ff20727 281 for(iTrkP1=0; iTrkP1<nSeleTrks; iTrkP1++) {
282 if(iTrkP1%1==0) AliDebug(1,Form(" 1st loop on pos: track number %d of %d",iTrkP1,nSeleTrks));
b056c5e3 283 // get track from tracks array
2ff20727 284 postrack1 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkP1);
285 if(postrack1->Charge()<0 || !TESTBIT(seleFlags[iTrkP1],kBitDispl)) continue;
b056c5e3 286 // LOOP ON NEGATIVE TRACKS
2ff20727 287 for(iTrkN1=0; iTrkN1<nSeleTrks; iTrkN1++) {
288 if(iTrkN1==iTrkP1) continue;
289 if(iTrkN1%1==0) AliDebug(1,Form(" 1st loop on neg: track number %d of %d",iTrkN1,nSeleTrks));
b056c5e3 290 // get track from tracks array
2ff20727 291 negtrack1 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN1);
292 if(negtrack1->Charge()>0 || !TESTBIT(seleFlags[iTrkN1],kBitDispl)) continue;
dcb444c9 293 // back to primary vertex
294 postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
295 negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
b056c5e3 296 // DCA between the two tracks
297 dcap1n1 = postrack1->GetDCA(negtrack1,fBzkG,xdummy,ydummy);
298 if(dcap1n1>dcaMax) { negtrack1=0; continue; }
299 // Vertexing
300 twoTrackArray1->AddAt(postrack1,0);
301 twoTrackArray1->AddAt(negtrack1,1);
dcb444c9 302 AliAODVertex *vertexp1n1 = ReconstructSecondaryVertex(twoTrackArray1,dispersion);
b056c5e3 303 if(!vertexp1n1) {
304 twoTrackArray1->Clear();
305 negtrack1=0;
306 continue;
307 }
2ff20727 308 if(fD0toKpi || fJPSItoEle || fDstar) {
309 io2Prong = Make2Prong(twoTrackArray1,event,vertexp1n1,dcap1n1,okD0,okJPSI,okD0fromDstar);
310 if((fD0toKpi && okD0) || (fJPSItoEle && okJPSI)) {
311 // add the vertex and the decay to the AOD
312 AliAODVertex *v2Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexp1n1);
313 if(fInputAOD) AddDaughterRefs(v2Prong,event,twoTrackArray1);
dcb444c9 314 if(okD0) {
2ff20727 315 rd = new(aodD0toKpiRef[iD0toKpi++])AliAODRecoDecayHF2Prong(*io2Prong);
316 rd->SetSecondaryVtx(v2Prong);
317 v2Prong->SetParent(rd);
dcb444c9 318 }
319 if(okJPSI) {
2ff20727 320 rd = new(aodJPSItoEleRef[iJPSItoEle++])AliAODRecoDecayHF2Prong(*io2Prong);
321 rd->SetSecondaryVtx(v2Prong);
322 if(!okD0) v2Prong->SetParent(rd); // it cannot have two mothers ...
b056c5e3 323 }
324 }
2ff20727 325 if(fDstar && okD0fromDstar) {
326 if(fInputAOD) { // write references in io2Prong
327 AddDaughterRefs(vertexp1n1,event,twoTrackArray1);
328 io2Prong->SetSecondaryVtx(vertexp1n1);
329 }
330 // create a track from the D0
d5ea6432 331 AliESDtrack *trackD0 = new AliESDtrack(io2Prong);
2ff20727 332 // LOOP ON TRACKS THAT PASSED THE SOFT PION CUTS
333 for(iTrkSoftPi=0; iTrkSoftPi<nSeleTrks; iTrkSoftPi++) {
334 if(iTrkSoftPi==iTrkP1 || iTrkSoftPi==iTrkN1) continue;
335 if(!TESTBIT(seleFlags[iTrkSoftPi],kBitSoftPi)) continue;
336 if(iTrkSoftPi%1==0) AliDebug(1,Form(" 1st loop on pi_s: track number %d of %d",iTrkSoftPi,nSeleTrks));
337 // get track from tracks array
338 trackPi = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkSoftPi);
339
340 trackPi->PropagateToDCA(fV1,fBzkG,kVeryBig);
341 trackD0->PropagateToDCA(fV1,fBzkG,kVeryBig);
342 // DCA between the two tracks
343 dcaCasc = trackPi->GetDCA(trackD0,fBzkG,xdummy,ydummy);
344 // Vertexing
345 twoTrackArrayCasc->AddAt(trackPi,0);
346 twoTrackArrayCasc->AddAt(trackD0,1);
347 AliAODVertex *vertexCasc = ReconstructSecondaryVertex(twoTrackArrayCasc,dispersion);
348 if(!vertexCasc) {
349 twoTrackArrayCasc->Clear();
350 trackPi=0;
351 continue;
352 }
353 ioCascade = MakeCascade(twoTrackArrayCasc,event,vertexCasc,io2Prong,dcaCasc,okDstar);
354 if(okDstar) {
355 if(!okD0) {
356 // add the D0 to the AOD (if not already done)
357 AliAODVertex *v2Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexp1n1);
358 if(fInputAOD) AddDaughterRefs(v2Prong,event,twoTrackArray1);
359 rd = new(aodD0toKpiRef[iD0toKpi++])AliAODRecoDecayHF2Prong(*io2Prong);
360 rd->SetSecondaryVtx(v2Prong);
361 v2Prong->SetParent(rd);
362 okD0=kTRUE; // this is done to add it only once
363 }
364 // add the vertex and the cascade to the AOD
365 AliAODVertex *vCasc = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexCasc);
366 if(fInputAOD) AddDaughterRefs(vCasc,event,twoTrackArrayCasc); // add the pion
367 //vCasc->AddDaughter(rd); // doesn't work, because the D0 and the bachelor have different ROOT process ID
368 rc = new(aodDstarRef[iDstar++])AliAODRecoCascadeHF(*ioCascade);
369 rc->Set2Prong(rd); // add the D0
370 rc->SetSecondaryVtx(vCasc);
371 vCasc->SetParent(rc);
372 }
373 twoTrackArrayCasc->Clear();
374 trackPi=0;
375 ioCascade=NULL;
376 delete vertexCasc;
377 } // end loop on soft pi tracks
378 if(trackD0) {delete trackD0; trackD0=NULL;}
379 }
b056c5e3 380 io2Prong=NULL;
2ff20727 381 }
b056c5e3 382 twoTrackArray1->Clear();
383 if(!f3Prong && !f4Prong) {
384 negtrack1=0;
385 delete vertexp1n1;
386 continue;
387 }
388
389
390 // 2nd LOOP ON POSITIVE TRACKS
2ff20727 391 for(iTrkP2=iTrkP1+1; iTrkP2<nSeleTrks; iTrkP2++) {
392 if(iTrkP2==iTrkP1 || iTrkP2==iTrkN1) continue;
393 if(iTrkP2%1==0) AliDebug(1,Form(" 2nd loop on pos: track number %d of %d",iTrkP2,nSeleTrks));
b056c5e3 394 // get track from tracks array
2ff20727 395 postrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkP2);
396 if(postrack2->Charge()<0 || !TESTBIT(seleFlags[iTrkP2],kBitDispl)) continue;
dcb444c9 397 // back to primary vertex
398 postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
399 postrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
400 negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
2ff20727 401 //printf("********** %d %d %d\n",postrack1->GetID(),postrack2->GetID(),negtrack1->GetID());
b056c5e3 402 dcap2n1 = postrack2->GetDCA(negtrack1,fBzkG,xdummy,ydummy);
403 if(dcap2n1>dcaMax) { postrack2=0; continue; }
404 dcap1p2 = postrack2->GetDCA(postrack1,fBzkG,xdummy,ydummy);
405 if(dcap1p2>dcaMax) { postrack2=0; continue; }
406
407 // Vertexing
408 twoTrackArray2->AddAt(postrack2,0);
409 twoTrackArray2->AddAt(negtrack1,1);
dcb444c9 410 AliAODVertex *vertexp2n1 = ReconstructSecondaryVertex(twoTrackArray2,dispersion);
b056c5e3 411 if(!vertexp2n1) {
412 twoTrackArray2->Clear();
413 postrack2=0;
414 continue;
415 }
416 if(f3Prong) {
417 threeTrackArray->AddAt(postrack1,0);
418 threeTrackArray->AddAt(negtrack1,1);
419 threeTrackArray->AddAt(postrack2,2);
dcb444c9 420 AliAODVertex* secVert3PrAOD = ReconstructSecondaryVertex(threeTrackArray,dispersion);
421 io3Prong = Make3Prong(threeTrackArray,event,secVert3PrAOD,dispersion,vertexp1n1,vertexp2n1,dcap1n1,dcap2n1,dcap1p2,ok3Prong);
b056c5e3 422 if(ok3Prong) {
2ff20727 423 AliAODVertex *v3Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert3PrAOD);
424 if(fInputAOD) AddDaughterRefs(v3Prong,event,threeTrackArray);
425 rd = new(aodCharm3ProngRef[i3Prong++])AliAODRecoDecayHF3Prong(*io3Prong);
426 rd->SetSecondaryVtx(v3Prong);
427 v3Prong->SetParent(rd);
b056c5e3 428 }
dcb444c9 429 if(io3Prong) io3Prong=NULL;
b056c5e3 430 }
431 if(f4Prong) {
432 // 3rd LOOP ON NEGATIVE TRACKS (for 4 prong)
2ff20727 433 for(iTrkN2=iTrkN1+1; iTrkN2<nSeleTrks; iTrkN2++) {
434 if(iTrkN2==iTrkP1 || iTrkN2==iTrkP2 || iTrkN2==iTrkN1) continue;
435 if(iTrkN2%1==0) AliDebug(1,Form(" 3rd loop on neg: track number %d of %d",iTrkN2,nSeleTrks));
b056c5e3 436 // get track from tracks array
2ff20727 437 negtrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN2);
438 if(negtrack2->Charge()>0 || !TESTBIT(seleFlags[iTrkN2],kBitDispl)) continue;
dcb444c9 439 // back to primary vertex
440 postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
441 postrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
442 negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
443 negtrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
b056c5e3 444 dcap1n2 = postrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
445 if(dcap1n2>dcaMax) { negtrack2=0; continue; }
446 // Vertexing
447 fourTrackArray->AddAt(postrack1,0);
448 fourTrackArray->AddAt(negtrack1,1);
449 fourTrackArray->AddAt(postrack2,2);
450 fourTrackArray->AddAt(negtrack2,3);
dcb444c9 451 AliAODVertex* secVert4PrAOD = ReconstructSecondaryVertex(fourTrackArray,dispersion);
452 io4Prong = Make4Prong(fourTrackArray,event,secVert4PrAOD,vertexp1n1,vertexp2n1,dcap1n1,dcap1n2,dcap2n1,ok4Prong);
b056c5e3 453 if(ok4Prong) {
2ff20727 454 AliAODVertex *v4Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert4PrAOD);
455 if(fInputAOD) AddDaughterRefs(v4Prong,event,fourTrackArray);
456 rd = new(aodCharm4ProngRef[i4Prong++])AliAODRecoDecayHF4Prong(*io4Prong);
457 rd->SetSecondaryVtx(v4Prong);
458 v4Prong->SetParent(rd);
b056c5e3 459 }
dcb444c9 460 if(io4Prong) io4Prong=NULL;
b056c5e3 461 fourTrackArray->Clear();
462 negtrack2 = 0;
463 } // end loop on negative tracks
464 }
465 postrack2 = 0;
466 delete vertexp2n1;
467 } // end 2nd loop on positive tracks
468 twoTrackArray2->Clear();
469
470 // 2nd LOOP ON NEGATIVE TRACKS
2ff20727 471 for(iTrkN2=iTrkN1+1; iTrkN2<nSeleTrks; iTrkN2++) {
472 if(iTrkN2==iTrkP1 || iTrkN2==iTrkP2 || iTrkN2==iTrkN1) continue;
473 if(iTrkN2%1==0) AliDebug(1,Form(" 2nd loop on neg: track number %d of %d",iTrkN2,nSeleTrks));
b056c5e3 474 // get track from tracks array
2ff20727 475 negtrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN2);
476 if(negtrack2->Charge()>0 || !TESTBIT(seleFlags[iTrkN2],kBitDispl)) continue;
dcb444c9 477 // back to primary vertex
478 postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
479 negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
480 negtrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
2ff20727 481 //printf("********** %d %d %d\n",postrack1->GetID(),negtrack1->GetID(),negtrack2->GetID());
b056c5e3 482 dcap1n2 = postrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
483 if(dcap1n2>dcaMax) { negtrack2=0; continue; }
484 dcan1n2 = negtrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
485 if(dcan1n2>dcaMax) { negtrack2=0; continue; }
486
487 // Vertexing
488 twoTrackArray2->AddAt(postrack1,0);
489 twoTrackArray2->AddAt(negtrack2,1);
dcb444c9 490
491 AliAODVertex *vertexp1n2 = ReconstructSecondaryVertex(twoTrackArray2,dispersion);
b056c5e3 492 if(!vertexp1n2) {
493 twoTrackArray2->Clear();
494 negtrack2=0;
495 continue;
496 }
497 if(f3Prong) {
498 threeTrackArray->AddAt(negtrack1,0);
499 threeTrackArray->AddAt(postrack1,1);
500 threeTrackArray->AddAt(negtrack2,2);
dcb444c9 501 AliAODVertex* secVert3PrAOD = ReconstructSecondaryVertex(threeTrackArray,dispersion);
502 io3Prong = Make3Prong(threeTrackArray,event,secVert3PrAOD,dispersion,vertexp1n1,vertexp1n2,dcap1n1,dcap1n2,dcan1n2,ok3Prong);
b056c5e3 503 if(ok3Prong) {
2ff20727 504 AliAODVertex *v3Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert3PrAOD);
505 if(fInputAOD) AddDaughterRefs(v3Prong,event,threeTrackArray);
506 rd = new(aodCharm3ProngRef[i3Prong++])AliAODRecoDecayHF3Prong(*io3Prong);
507 rd->SetSecondaryVtx(v3Prong);
508 v3Prong->SetParent(rd);
b056c5e3 509 }
dcb444c9 510 if(io3Prong) io3Prong=NULL;
b056c5e3 511 }
512 negtrack2 = 0;
513 delete vertexp1n2;
514 } // end 2nd loop on negative tracks
515 twoTrackArray2->Clear();
516
517 negtrack1 = 0;
518 delete vertexp1n1;
519 } // end 1st loop on negative tracks
520
521 postrack1 = 0;
522 } // end 1st loop on positive tracks
523
524
2ff20727 525 AliDebug(1,Form(" Total HF vertices in event = %d;",
526 (Int_t)aodVerticesHFTClArr->GetEntriesFast()));
b056c5e3 527 if(fD0toKpi) {
dcb444c9 528 AliDebug(1,Form(" D0->Kpi in event = %d;",
529 (Int_t)aodD0toKpiTClArr->GetEntriesFast()));
b056c5e3 530 }
531 if(fJPSItoEle) {
dcb444c9 532 AliDebug(1,Form(" JPSI->ee in event = %d;",
533 (Int_t)aodJPSItoEleTClArr->GetEntriesFast()));
b056c5e3 534 }
535 if(f3Prong) {
dcb444c9 536 AliDebug(1,Form(" Charm->3Prong in event = %d;",
537 (Int_t)aodCharm3ProngTClArr->GetEntriesFast()));
b056c5e3 538 }
539 if(f4Prong) {
dcb444c9 540 AliDebug(1,Form(" Charm->4Prong in event = %d;\n",
541 (Int_t)aodCharm4ProngTClArr->GetEntriesFast()));
b056c5e3 542 }
2ff20727 543 if(fDstar) {
544 AliDebug(1,Form(" D*->D0pi in event = %d;\n",
545 (Int_t)aodDstarTClArr->GetEntriesFast()));
546 }
b056c5e3 547
548
dcb444c9 549 twoTrackArray1->Delete(); delete twoTrackArray1;
550 twoTrackArray2->Delete(); delete twoTrackArray2;
2ff20727 551 twoTrackArrayCasc->Delete(); delete twoTrackArrayCasc;
b056c5e3 552 threeTrackArray->Clear();
553 threeTrackArray->Delete(); delete threeTrackArray;
dcb444c9 554 fourTrackArray->Delete(); delete fourTrackArray;
2ff20727 555 delete [] seleFlags; seleFlags=NULL;
b056c5e3 556
dcb444c9 557 if(fInputAOD) {
2ff20727 558 seleTrksArray.Delete();
dcb444c9 559 }
b056c5e3 560
561 return;
562}
563//----------------------------------------------------------------------------
dcb444c9 564void AliAnalysisVertexingHF::AddDaughterRefs(AliAODVertex *v,AliVEvent *event,
565 TObjArray *trkArray) const
6a213b59 566{
dcb444c9 567 // Add the AOD tracks as daughters of the vertex (TRef)
6a213b59 568
dcb444c9 569 Int_t nTrks = trkArray->GetEntriesFast();
6a213b59 570
dcb444c9 571 AliESDtrack *esdTrack = 0;
572 AliAODTrack *aodTrack = 0;
573 Int_t id;
6a213b59 574
dcb444c9 575 for(Int_t i=0; i<nTrks; i++) {
576 esdTrack = (AliESDtrack*)trkArray->UncheckedAt(i);
577 id = (Int_t)esdTrack->GetID();
2ff20727 578 //printf("---> %d\n",id);
579 if(id<0) continue; // this track is a D0
dcb444c9 580 aodTrack = (AliAODTrack*)event->GetTrack(fAODMap[id]);
581 v->AddDaughter(aodTrack);
6a213b59 582 }
6a213b59 583
584 return;
dcb444c9 585}
6a213b59 586//----------------------------------------------------------------------------
2ff20727 587AliAODRecoCascadeHF* AliAnalysisVertexingHF::MakeCascade(
588 TObjArray *twoTrackArray,AliVEvent *event,
589 AliAODVertex *secVert,
590 AliAODRecoDecayHF2Prong *rd2Prong,
591 Double_t dca,
592 Bool_t &okDstar) const
593{
594 // Make the cascade as a 2Prong decay and check if it passes Dstar
595 // reconstruction cuts
596
597 okDstar = kFALSE;
598
599 Bool_t dummy1,dummy2,dummy3;
600
601 // We use Make2Prong to construct the AliAODRecoCascadeHF
602 // (which inherits from AliAODRecoDecayHF2Prong)
603 AliAODRecoCascadeHF *theCascade =
604 (AliAODRecoCascadeHF*)Make2Prong(twoTrackArray,event,secVert,dca,
605 dummy1,dummy2,dummy3);
606 if(!theCascade) return 0x0;
607
608 // charge
609 AliESDtrack *trackPi = (AliESDtrack*)twoTrackArray->UncheckedAt(0);
610 theCascade->SetCharge(trackPi->Charge());
611
612 //--- selection cuts
613 //
614 AliAODRecoCascadeHF *tmpCascade = new AliAODRecoCascadeHF(*theCascade);
615 tmpCascade->Set2Prong(rd2Prong); // this is needed for the selection
616 AliAODVertex *primVertexAOD=0;
617 if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
618 // take event primary vertex
619 primVertexAOD = PrimaryVertex();
620 tmpCascade->SetOwnPrimaryVtx(primVertexAOD);
621 rd2Prong->SetOwnPrimaryVtx(primVertexAOD);
622 }
623 // select D*->D0pi
624 if(fDstar) {
625 Bool_t testD0=kTRUE;
626 okDstar = tmpCascade->SelectDstar(fDstarCuts,fD0fromDstarCuts,testD0);
627 }
628 tmpCascade->UnsetOwnPrimaryVtx();
629 tmpCascade->Unset2Prong();
630 delete tmpCascade; tmpCascade=NULL;
631 if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
632 rd2Prong->UnsetOwnPrimaryVtx();
633 delete primVertexAOD; primVertexAOD=NULL;
634 }
635 //---
636
637 return theCascade;
638}
639//-----------------------------------------------------------------------------
6a213b59 640AliAODRecoDecayHF2Prong *AliAnalysisVertexingHF::Make2Prong(
2ff20727 641 TObjArray *twoTrackArray,AliVEvent *event,
dcb444c9 642 AliAODVertex *secVert,Double_t dca,
2ff20727 643 Bool_t &okD0,Bool_t &okJPSI,
644 Bool_t &okD0fromDstar) const
6a213b59 645{
646 // Make 2Prong candidates and check if they pass D0toKpi or BtoJPSI
647 // reconstruction cuts
648 // G.E.Bruno (J/psi), A.Dainese (D0->Kpi)
649
2ff20727 650 okD0=kFALSE; okJPSI=kFALSE; okD0fromDstar=kFALSE;
6a213b59 651
652 Double_t px[2],py[2],pz[2],d0[2],d0err[2];
6a213b59 653
2ff20727 654 AliESDtrack *postrack = (AliESDtrack*)twoTrackArray->UncheckedAt(0);
655 AliESDtrack *negtrack = (AliESDtrack*)twoTrackArray->UncheckedAt(1);
6a213b59 656
657 // propagate tracks to secondary vertex, to compute inv. mass
dcb444c9 658 postrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
659 negtrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
6a213b59 660
661 Double_t momentum[3];
662 postrack->GetPxPyPz(momentum);
663 px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
664 negtrack->GetPxPyPz(momentum);
665 px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
666
667
668 // invariant mass cut (try to improve coding here..)
669 Bool_t okMassCut=kFALSE;
dcb444c9 670 if(!okMassCut && fD0toKpi) if(SelectInvMass(0,2,px,py,pz)) okMassCut=kTRUE;
6a213b59 671 if(!okMassCut && fJPSItoEle) if(SelectInvMass(1,2,px,py,pz)) okMassCut=kTRUE;
2ff20727 672 if(!okMassCut && fDstar) if(SelectInvMass(3,2,px,py,pz)) okMassCut=kTRUE;
6a213b59 673 if(!okMassCut) {
dcb444c9 674 AliDebug(2," candidate didn't pass mass cut");
6a213b59 675 return 0x0;
676 }
677
dcb444c9 678 // primary vertex to be used by this candidate
2ff20727 679 AliAODVertex *primVertexAOD = PrimaryVertex(twoTrackArray,event);
dcb444c9 680 if(!primVertexAOD) return 0x0;
6a213b59 681
dcb444c9 682 Double_t d0z0[2],covd0z0[3];
683 postrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
6a213b59 684 d0[0] = d0z0[0];
685 d0err[0] = TMath::Sqrt(covd0z0[0]);
dcb444c9 686 negtrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
6a213b59 687 d0[1] = d0z0[0];
688 d0err[1] = TMath::Sqrt(covd0z0[0]);
689
690 // create the object AliAODRecoDecayHF2Prong
dcb444c9 691 AliAODRecoDecayHF2Prong *the2Prong = new AliAODRecoDecayHF2Prong(secVert,px,py,pz,d0,d0err,dca);
6a213b59 692 the2Prong->SetOwnPrimaryVtx(primVertexAOD);
dcb444c9 693 UShort_t id[2]={(UShort_t)postrack->GetID(),(UShort_t)negtrack->GetID()};
694 the2Prong->SetProngIDs(2,id);
6a213b59 695
b056c5e3 696
6a213b59 697 // select D0->Kpi
698 Int_t checkD0,checkD0bar;
2ff20727 699 if(fD0toKpi) okD0 = the2Prong->SelectD0(fD0toKpiCuts,checkD0,checkD0bar);
6a213b59 700 //if(fDebug && fD0toKpi) printf(" %d\n",(Int_t)okD0);
701 // select J/psi from B
702 Int_t checkJPSI;
2ff20727 703 if(fJPSItoEle) okJPSI = the2Prong->SelectBtoJPSI(fBtoJPSICuts,checkJPSI);
6a213b59 704 //if(fDebug && fJPSItoEle) printf(" %d\n",(Int_t)okJPSI);
2ff20727 705 // select D0->Kpi from Dstar
706 if(fDstar) okD0fromDstar = the2Prong->SelectD0(fD0fromDstarCuts,checkD0,checkD0bar);
707 //if(fDebug && fDstar) printf(" %d\n",(Int_t)okD0fromDstar);
6a213b59 708
2ff20727 709 // remove the primary vertex (was used only for selection)
dcb444c9 710 if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the2Prong->UnsetOwnPrimaryVtx();
6a213b59 711
2ff20727 712 // get PID info from ESD
713 Double_t esdpid0[5];
714 postrack->GetESDpid(esdpid0);
715 Double_t esdpid1[5];
716 negtrack->GetESDpid(esdpid1);
717 Double_t esdpid[10];
718 for(Int_t i=0;i<5;i++) {
719 esdpid[i] = esdpid0[i];
720 esdpid[5+i] = esdpid1[i];
6a213b59 721 }
2ff20727 722 the2Prong->SetPID(2,esdpid);
6a213b59 723
6a213b59 724 return the2Prong;
725}
726//----------------------------------------------------------------------------
727AliAODRecoDecayHF3Prong* AliAnalysisVertexingHF::Make3Prong(
dcb444c9 728 TObjArray *threeTrackArray,AliVEvent *event,
729 AliAODVertex *secVert,Double_t dispersion,
730 AliAODVertex *vertexp1n1,AliAODVertex *vertexp2n1,
6a213b59 731 Double_t dcap1n1,Double_t dcap2n1,Double_t dcap1p2,
732 Bool_t &ok3Prong) const
733{
734 // Make 3Prong candidates and check if they pass Dplus or Ds or Lambdac
735 // reconstruction cuts
736 // E.Bruna, F.Prino
737
dcb444c9 738
6a213b59 739 ok3Prong=kFALSE;
dcb444c9 740 if(!secVert) return 0x0;
741
742 Double_t px[3],py[3],pz[3],d0[3],d0err[3];
743 Double_t momentum[3];
6a213b59 744
6a213b59 745
746 AliESDtrack *postrack1 = (AliESDtrack*)threeTrackArray->UncheckedAt(0);
dcb444c9 747 AliESDtrack *negtrack = (AliESDtrack*)threeTrackArray->UncheckedAt(1);
6a213b59 748 AliESDtrack *postrack2 = (AliESDtrack*)threeTrackArray->UncheckedAt(2);
749
dcb444c9 750 postrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
751 negtrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
752 postrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
6a213b59 753 postrack1->GetPxPyPz(momentum);
754 px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
755 negtrack->GetPxPyPz(momentum);
756 px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
757 postrack2->GetPxPyPz(momentum);
758 px[2] = momentum[0]; py[2] = momentum[1]; pz[2] = momentum[2];
759
b82f6d67 760 // invariant mass cut for D+, Ds, Lc
6a213b59 761 Bool_t okMassCut=kFALSE;
762 if(!okMassCut && f3Prong) if(SelectInvMass(2,3,px,py,pz)) okMassCut=kTRUE;
763 if(!okMassCut) {
dcb444c9 764 AliDebug(2," candidate didn't pass mass cut");
6a213b59 765 return 0x0;
766 }
767
dcb444c9 768 // primary vertex to be used by this candidate
2ff20727 769 AliAODVertex *primVertexAOD = PrimaryVertex(threeTrackArray,event);
dcb444c9 770 if(!primVertexAOD) return 0x0;
771
772 Double_t d0z0[2],covd0z0[3];
773 postrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
774 d0[0]=d0z0[0];
775 d0err[0] = TMath::Sqrt(covd0z0[0]);
776 negtrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
777 d0[1]=d0z0[0];
778 d0err[1] = TMath::Sqrt(covd0z0[0]);
779 postrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
780 d0[2]=d0z0[0];
781 d0err[2] = TMath::Sqrt(covd0z0[0]);
6a213b59 782
6a213b59 783
784 // create the object AliAODRecoDecayHF3Prong
dcb444c9 785 Double_t pos[3]; primVertexAOD->GetXYZ(pos);
6a213b59 786 Double_t dca[3]={dcap1n1,dcap2n1,dcap1p2};
dcb444c9 787 Double_t dist12=TMath::Sqrt((vertexp1n1->GetX()-pos[0])*(vertexp1n1->GetX()-pos[0])+(vertexp1n1->GetY()-pos[1])*(vertexp1n1->GetY()-pos[1])+(vertexp1n1->GetZ()-pos[2])*(vertexp1n1->GetZ()-pos[2]));
788 Double_t dist23=TMath::Sqrt((vertexp2n1->GetX()-pos[0])*(vertexp2n1->GetX()-pos[0])+(vertexp2n1->GetY()-pos[1])*(vertexp2n1->GetY()-pos[1])+(vertexp2n1->GetZ()-pos[2])*(vertexp2n1->GetZ()-pos[2]));
789 Short_t charge=(Short_t)(postrack1->Charge()*postrack2->Charge()*negtrack->Charge());
790 AliAODRecoDecayHF3Prong *the3Prong = new AliAODRecoDecayHF3Prong(secVert,px,py,pz,d0,d0err,dca,dispersion,dist12,dist23,charge);
6a213b59 791 the3Prong->SetOwnPrimaryVtx(primVertexAOD);
dcb444c9 792 UShort_t id[3]={(UShort_t)postrack1->GetID(),(UShort_t)negtrack->GetID(),(UShort_t)postrack2->GetID()};
793 the3Prong->SetProngIDs(3,id);
6a213b59 794
795
b82f6d67 796 // select D+->Kpipi, Ds->KKpi, Lc->pKpi
797 if(f3Prong) {
798 ok3Prong = kFALSE;
799 Int_t ok1,ok2;
800 if(the3Prong->SelectDplus(fDplusCuts)) ok3Prong = kTRUE;
801 if(the3Prong->SelectDs(fDsCuts,ok1,ok2)) ok3Prong = kTRUE;
802 if(the3Prong->SelectLc(fLcCuts,ok1,ok2)) ok3Prong = kTRUE;
803 }
6a213b59 804 //if(fDebug) printf("ok3Prong: %d\n",(Int_t)ok3Prong);
dcb444c9 805
806 if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the3Prong->UnsetOwnPrimaryVtx();
807
2ff20727 808 // get PID info from ESD
809 Double_t esdpid0[5];
810 postrack1->GetESDpid(esdpid0);
811 Double_t esdpid1[5];
812 negtrack->GetESDpid(esdpid1);
813 Double_t esdpid2[5];
814 postrack2->GetESDpid(esdpid2);
815
816 Double_t esdpid[15];
817 for(Int_t i=0;i<5;i++) {
818 esdpid[i] = esdpid0[i];
819 esdpid[5+i] = esdpid1[i];
820 esdpid[10+i] = esdpid2[i];
6a213b59 821 }
2ff20727 822 the3Prong->SetPID(3,esdpid);
6a213b59 823
6a213b59 824 return the3Prong;
825}
826//----------------------------------------------------------------------------
827AliAODRecoDecayHF4Prong* AliAnalysisVertexingHF::Make4Prong(
dcb444c9 828 TObjArray *fourTrackArray,AliVEvent *event,
829 AliAODVertex *secVert,
830 AliAODVertex *vertexp1n1,AliAODVertex *vertexp2n1,
6a213b59 831 Double_t dcap1n1,Double_t dcap1n2,Double_t dcap2n1,
832 Bool_t &ok4Prong) const
833{
834 // Make 4Prong candidates and check if they pass D0toKpipipi
835 // reconstruction cuts
836 // G.E.Bruno, R.Romita
837
838 ok4Prong=kFALSE;
dcb444c9 839 if(!secVert) return 0x0;
6a213b59 840
841 Double_t px[4],py[4],pz[4],d0[4],d0err[4];//d0z[3];
6a213b59 842
b82f6d67 843 px[0]=dcap1n1*dcap1n2*dcap2n1; // TO BE CHANGED (done just to removed compilation warning about dca... not used)
6a213b59 844
6a213b59 845 AliESDtrack *postrack1 = (AliESDtrack*)fourTrackArray->UncheckedAt(0);
846 AliESDtrack *negtrack1 = (AliESDtrack*)fourTrackArray->UncheckedAt(1);
847 AliESDtrack *postrack2 = (AliESDtrack*)fourTrackArray->UncheckedAt(2);
848 AliESDtrack *negtrack2 = (AliESDtrack*)fourTrackArray->UncheckedAt(3);
849
dcb444c9 850 postrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
851 negtrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
852 postrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
853 negtrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
6a213b59 854
855 Double_t momentum[3];
856 postrack1->GetPxPyPz(momentum);
857 px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
858 negtrack1->GetPxPyPz(momentum);
859 px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
860 postrack2->GetPxPyPz(momentum);
861 px[2] = momentum[0]; py[2] = momentum[1]; pz[2] = momentum[2];
862 negtrack2->GetPxPyPz(momentum);
863 px[3] = momentum[0]; py[3] = momentum[1]; pz[3] = momentum[2];
864
865 // invariant mass cut for rho or D0 (try to improve coding here..)
866 //Bool_t okMassCut=kFALSE;
867 //if(!okMassCut) if(SelectInvMass(2,3,px,py,pz)) okMassCut=kTRUE;
868 //if(!okMassCut) {
869 // if(fDebug) printf(" candidate didn't pass mass cut\n");
870 // return 0x0;
871 //}
872
dcb444c9 873 // primary vertex to be used by this candidate
2ff20727 874 AliAODVertex *primVertexAOD = PrimaryVertex(fourTrackArray,event);
dcb444c9 875 if(!primVertexAOD) return 0x0;
876
877 /*
878 Double_t d0z0[2],covd0z0[3];
879 postrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
880 negtrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
881 postrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
882 negtrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
883 */
6a213b59 884
885 // create the object AliAODRecoDecayHF4Prong
dcb444c9 886 Double_t pos[3]; primVertexAOD->GetXYZ(pos);
6a213b59 887 Double_t dca[6]={0.,0.,0.,0.,0.,0.}; // modify it
dcb444c9 888 Double_t dist12=TMath::Sqrt((vertexp1n1->GetX()-pos[0])*(vertexp1n1->GetX()-pos[0])+(vertexp1n1->GetY()-pos[1])*(vertexp1n1->GetY()-pos[1])+(vertexp1n1->GetZ()-pos[2])*(vertexp1n1->GetZ()-pos[2]));
889 Double_t dist23=TMath::Sqrt((vertexp2n1->GetX()-pos[0])*(vertexp2n1->GetX()-pos[0])+(vertexp2n1->GetY()-pos[1])*(vertexp2n1->GetY()-pos[1])+(vertexp2n1->GetZ()-pos[2])*(vertexp2n1->GetZ()-pos[2]));
6a213b59 890 Double_t dist14=0.; // to be implemented
891 Double_t dist34=0.; // to be implemented
dcb444c9 892 Short_t charge=0;
893 AliAODRecoDecayHF4Prong *the4Prong = new AliAODRecoDecayHF4Prong(secVert,px,py,pz,d0,d0err,dca,dist12,dist23,dist14,dist34,charge);
6a213b59 894 the4Prong->SetOwnPrimaryVtx(primVertexAOD);
dcb444c9 895 UShort_t id[4]={(UShort_t)postrack1->GetID(),(UShort_t)negtrack1->GetID(),(UShort_t)postrack2->GetID(),(UShort_t)negtrack2->GetID()};
896 the4Prong->SetProngIDs(4,id);
6a213b59 897
898
899 // use the following two lines once AliAODRecoDecayHF4Prong::SelectD0 is available
900 // select D0->Kpipipi
901 //Int_t checkD0,checkD0bar;
902 // ok4Prong=the4Prong->SelectD0(fD04pCuts,checkD0,checkD0bar);
903 ok4Prong=kFALSE; //for the time being ...
904
dcb444c9 905 if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the4Prong->UnsetOwnPrimaryVtx();
6a213b59 906
907 // get PID info from ESD
908 Double_t esdpid0[5];
909 postrack1->GetESDpid(esdpid0);
910 Double_t esdpid1[5];
911 negtrack1->GetESDpid(esdpid1);
912 Double_t esdpid2[5];
913 postrack2->GetESDpid(esdpid2);
914 Double_t esdpid3[5];
915 negtrack2->GetESDpid(esdpid3);
916
917 Double_t esdpid[20];
918 for(Int_t i=0;i<5;i++) {
2ff20727 919 esdpid[i] = esdpid0[i];
920 esdpid[5+i] = esdpid1[i];
6a213b59 921 esdpid[10+i] = esdpid2[i];
922 esdpid[15+i] = esdpid3[i];
923 }
924 the4Prong->SetPID(4,esdpid);
925
6a213b59 926 return the4Prong;
927}
928//-----------------------------------------------------------------------------
2ff20727 929AliAODVertex* AliAnalysisVertexingHF::PrimaryVertex(TObjArray *trkArray,
930 AliVEvent *event) const
6a213b59 931{
2ff20727 932 // Returns primary vertex to be used for this candidate
6a213b59 933
dcb444c9 934 AliESDVertex *vertexESD = 0;
935 AliAODVertex *vertexAOD = 0;
936
dcb444c9 937
938 if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
939 // primary vertex from the input event
940
941 vertexESD = new AliESDVertex(*fV1);
942
943 } else {
944 // primary vertex specific to this candidate
945
2ff20727 946 Int_t nTrks = trkArray->GetEntriesFast();
dcb444c9 947 AliVertexerTracks *vertexer = new AliVertexerTracks(event->GetMagneticField());
948
949 if(fRecoPrimVtxSkippingTrks) {
950 // recalculating the vertex
951
952 if(strstr(fV1->GetTitle(),"VertexerTracksWithConstraint")) {
953 Float_t diamondcovxy[3];
954 event->GetDiamondCovXY(diamondcovxy);
955 Double_t pos[3]={event->GetDiamondX(),event->GetDiamondY(),0.};
956 Double_t cov[6]={diamondcovxy[0],diamondcovxy[1],diamondcovxy[2],0.,0.,10.};
957 AliESDVertex *diamond = new AliESDVertex(pos,cov,1.,1);
958 vertexer->SetVtxStart(diamond);
959 delete diamond; diamond=NULL;
960 if(strstr(fV1->GetTitle(),"VertexerTracksWithConstraintOnlyFitter"))
961 vertexer->SetOnlyFitter();
962 }
963 Int_t skipped[10];
964 AliESDtrack *t = 0;
965 for(Int_t i=0; i<nTrks; i++) {
966 t = (AliESDtrack*)trkArray->UncheckedAt(i);
967 skipped[i] = (Int_t)t->GetID();
968 }
969 vertexer->SetSkipTracks(nTrks,skipped);
970 vertexESD = (AliESDVertex*)vertexer->FindPrimaryVertex(event);
971
972 } else if(fRmTrksFromPrimVtx) {
973 // removing the prongs tracks
974
975 TObjArray rmArray(nTrks);
976 UShort_t *rmId = new UShort_t[nTrks];
977 AliESDtrack *esdTrack = 0;
978 AliESDtrack *t = 0;
979 for(Int_t i=0; i<nTrks; i++) {
980 t = (AliESDtrack*)trkArray->UncheckedAt(i);
981 esdTrack = new AliESDtrack(*t);
982 rmArray.AddLast(esdTrack);
2ff20727 983 if(esdTrack->GetID()>=0) {
984 rmId[i]=(UShort_t)esdTrack->GetID();
985 } else {
986 rmId[i]=9999;
987 }
dcb444c9 988 }
989 Float_t diamondxy[2]={event->GetDiamondX(),event->GetDiamondY()};
990 vertexESD = vertexer->RemoveTracksFromVertex(fV1,&rmArray,rmId,diamondxy);
991 delete [] rmId; rmId=NULL;
992 rmArray.Delete();
993
6a213b59 994 }
6a213b59 995
dcb444c9 996 if(!vertexESD) return vertexAOD;
997 if(vertexESD->GetNContributors()<=0) {
998 AliDebug(2,"vertexing failed");
999 delete vertexESD; vertexESD=NULL;
1000 return vertexAOD;
6a213b59 1001 }
dcb444c9 1002
1003 delete vertexer; vertexer=NULL;
1004
6a213b59 1005 }
1006
dcb444c9 1007 // convert to AliAODVertex
1008 Double_t pos[3],cov[6],chi2perNDF;
1009 vertexESD->GetXYZ(pos); // position
1010 vertexESD->GetCovMatrix(cov); //covariance matrix
1011 chi2perNDF = vertexESD->GetChi2toNDF();
1012 delete vertexESD; vertexESD=NULL;
1013
1014 vertexAOD = new AliAODVertex(pos,cov,chi2perNDF);
6a213b59 1015
dcb444c9 1016 return vertexAOD;
6a213b59 1017}
1018//-----------------------------------------------------------------------------
1019void AliAnalysisVertexingHF::PrintStatus() const {
1020 // Print parameters being used
1021
f8fa4595 1022 //printf("Preselections:\n");
1023 // fTrackFilter->Dump();
4d5c9633 1024 if(fSecVtxWithKF) {
1025 printf("Secondary vertex with Kalman filter package (AliKFParticle)\n");
1026 } else {
1027 printf("Secondary vertex with AliVertexerTracks\n");
1028 }
6a213b59 1029 if(fRecoPrimVtxSkippingTrks) printf("RecoPrimVtxSkippingTrks\n");
1030 if(fRmTrksFromPrimVtx) printf("RmTrksFromPrimVtx\n");
1031 if(fD0toKpi) {
1032 printf("Reconstruct D0->Kpi candidates with cuts:\n");
1033 printf(" |M-MD0| [GeV] < %f\n",fD0toKpiCuts[0]);
1034 printf(" dca [cm] < %f\n",fD0toKpiCuts[1]);
1035 printf(" cosThetaStar < %f\n",fD0toKpiCuts[2]);
1036 printf(" pTK [GeV/c] > %f\n",fD0toKpiCuts[3]);
1037 printf(" pTpi [GeV/c] > %f\n",fD0toKpiCuts[4]);
1038 printf(" |d0K| [cm] < %f\n",fD0toKpiCuts[5]);
1039 printf(" |d0pi| [cm] < %f\n",fD0toKpiCuts[6]);
1040 printf(" d0d0 [cm^2] < %f\n",fD0toKpiCuts[7]);
1041 printf(" cosThetaPoint > %f\n",fD0toKpiCuts[8]);
1042 }
2ff20727 1043 if(fDstar) {
1044 printf(" |M-MD*| [GeV] < %f\n",fDstarCuts[0]);
1045 printf(" |M_Kpipi-M_Kpi-(MD*-MD0)| [GeV] < %f\n",fDstarCuts[1]);
1046 printf(" pTpisoft [GeV/c] > %f\n",fDstarCuts[2]);
1047 printf(" pTpisoft [GeV/c] < %f\n",fDstarCuts[3]);
1048 printf(" Theta(pisoft,D0plane) < %f\n",fDstarCuts[4]);
1049 printf("Reconstruct D*->D0pi candidates with cuts:\n");
1050 printf(" D0 from D* cuts:\n");
1051 printf(" |M-MD0| [GeV] < %f\n",fD0fromDstarCuts[0]);
1052 printf(" dca [cm] < %f\n",fD0fromDstarCuts[1]);
1053 printf(" cosThetaStar < %f\n",fD0fromDstarCuts[2]);
1054 printf(" pTK [GeV/c] > %f\n",fD0fromDstarCuts[3]);
1055 printf(" pTpi [GeV/c] > %f\n",fD0fromDstarCuts[4]);
1056 printf(" |d0K| [cm] < %f\n",fD0fromDstarCuts[5]);
1057 printf(" |d0pi| [cm] < %f\n",fD0fromDstarCuts[6]);
1058 printf(" d0d0 [cm^2] < %f\n",fD0fromDstarCuts[7]);
1059 printf(" cosThetaPoint > %f\n",fD0fromDstarCuts[8]);
1060 }
6a213b59 1061 if(fJPSItoEle) {
1062 printf("Reconstruct J/psi from B candidates with cuts:\n");
1063 printf(" |M-MJPSI| [GeV] < %f\n",fBtoJPSICuts[0]);
1064 printf(" dca [cm] < %f\n",fBtoJPSICuts[1]);
1065 printf(" cosThetaStar < %f\n",fBtoJPSICuts[2]);
1066 printf(" pTP [GeV/c] > %f\n",fBtoJPSICuts[3]);
1067 printf(" pTN [GeV/c] > %f\n",fBtoJPSICuts[4]);
1068 printf(" |d0P| [cm] < %f\n",fBtoJPSICuts[5]);
1069 printf(" |d0N| [cm] < %f\n",fBtoJPSICuts[6]);
1070 printf(" d0d0 [cm^2] < %f\n",fBtoJPSICuts[7]);
1071 printf(" cosThetaPoint > %f\n",fBtoJPSICuts[8]);
1072 }
1073 if(f3Prong) {
1074 printf("Reconstruct 3 prong candidates.\n");
4d5c9633 1075 printf(" D+->Kpipi cuts:\n");
6a213b59 1076 printf(" |M-MD+| [GeV] < %f\n",fDplusCuts[0]);
1077 printf(" pTK [GeV/c] > %f\n",fDplusCuts[1]);
1078 printf(" pTPi [GeV/c] > %f\n",fDplusCuts[2]);
1079 printf(" |d0K| [cm] > %f\n",fDplusCuts[3]);
1080 printf(" |d0Pi| [cm] > %f\n",fDplusCuts[4]);
1081 printf(" dist12 [cm] < %f\n",fDplusCuts[5]);
1082 printf(" sigmavert [cm] < %f\n",fDplusCuts[6]);
1083 printf(" dist prim-sec [cm] > %f\n",fDplusCuts[7]);
1084 printf(" pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fDplusCuts[8]);
1085 printf(" cosThetaPoint > %f\n",fDplusCuts[9]);
1086 printf(" Sum d0^2 [cm^2] > %f\n",fDplusCuts[10]);
1087 printf(" dca cut [cm] < %f\n",fDplusCuts[11]);
4d5c9633 1088 printf(" Ds->KKpi cuts:\n");
1089 printf(" |M-MDs| [GeV] < %f\n",fDsCuts[0]);
81679460 1090 printf(" pTK [GeV/c] > %f\n",fDsCuts[1]);
1091 printf(" pTPi [GeV/c] > %f\n",fDsCuts[2]);
1092 printf(" |d0K| [cm] > %f\n",fDsCuts[3]);
1093 printf(" |d0Pi| [cm] > %f\n",fDsCuts[4]);
1094 printf(" dist12 [cm] < %f\n",fDsCuts[5]);
1095 printf(" sigmavert [cm] < %f\n",fDsCuts[6]);
1096 printf(" dist prim-sec [cm] > %f\n",fDsCuts[7]);
1097 printf(" pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fDsCuts[8]);
1098 printf(" cosThetaPoint > %f\n",fDsCuts[9]);
1099 printf(" Sum d0^2 [cm^2] > %f\n",fDsCuts[10]);
1100 printf(" dca cut [cm] < %f\n",fDsCuts[11]);
1101 printf(" Inv. Mass phi/K0* [GeV] < %f\n",fDsCuts[12]);
6ea608bf 1102 printf(" Lc->pKpi cuts:\n");
1103 printf(" |M-MLc| [GeV] < %f\n",fLcCuts[0]);
81679460 1104 printf(" pTP [GeV/c] > %f\n",fLcCuts[1]);
1105 printf(" pTPi and pTK [GeV/c] > %f\n",fLcCuts[2]);
1106 printf(" |d0P| [cm] > %f\n",fLcCuts[3]);
1107 printf(" |d0Pi| and |d0K| [cm] > %f\n",fLcCuts[4]);
1108 printf(" dist12 [cm] < %f\n",fLcCuts[5]);
1109 printf(" sigmavert [cm] < %f\n",fLcCuts[6]);
1110 printf(" dist prim-sec [cm] > %f\n",fLcCuts[7]);
1111 printf(" pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fLcCuts[8]);
1112 printf(" cosThetaPoint > %f\n",fLcCuts[9]);
1113 printf(" Sum d0^2 [cm^2] > %f\n",fLcCuts[10]);
1114 printf(" dca cut [cm] < %f\n",fLcCuts[11]);
6ea608bf 1115 printf(" Ds->KKpi cuts:\n");
6a213b59 1116 }
1117
1118 return;
1119}
1120//-----------------------------------------------------------------------------
dcb444c9 1121AliAODVertex* AliAnalysisVertexingHF::ReconstructSecondaryVertex(TObjArray *trkArray,
1122 Double_t &dispersion) const
1123{
1124 // Secondary vertex reconstruction with AliVertexerTracks or AliKFParticle
1125
1126 AliESDVertex *vertexESD = 0;
1127 AliAODVertex *vertexAOD = 0;
1128
1129 if(!fSecVtxWithKF) { // AliVertexerTracks
1130
1131 AliVertexerTracks *vertexer = new AliVertexerTracks(fBzkG);
1132 vertexer->SetVtxStart(fV1);
1133 vertexESD = (AliESDVertex*)vertexer->VertexForSelectedESDTracks(trkArray);
1134 delete vertexer; vertexer=NULL;
1135
1136 if(!vertexESD) return vertexAOD;
1137
1138 if(vertexESD->GetNContributors()!=trkArray->GetEntriesFast()) {
1139 AliDebug(2,"vertexing failed");
1140 delete vertexESD; vertexESD=NULL;
1141 return vertexAOD;
1142 }
1143
1144 } else { // Kalman Filter vertexer (AliKFParticle)
1145
1146 AliKFParticle::SetField(fBzkG);
1147
a353d2e4 1148 AliKFVertex vertexKF;
dcb444c9 1149
1150 Int_t nTrks = trkArray->GetEntriesFast();
1151 for(Int_t i=0; i<nTrks; i++) {
1152 AliESDtrack *esdTrack = (AliESDtrack*)trkArray->At(i);
1153 AliKFParticle daughterKF(*esdTrack,211);
1154 vertexKF.AddDaughter(daughterKF);
1155 }
a353d2e4 1156 vertexESD = new AliESDVertex(vertexKF.Parameters(),
1157 vertexKF.CovarianceMatrix(),
1158 vertexKF.GetChi2(),
1159 vertexKF.GetNContributors());
dcb444c9 1160
1161 }
1162
1163 // convert to AliAODVertex
1164 Double_t pos[3],cov[6],chi2perNDF;
1165 vertexESD->GetXYZ(pos); // position
1166 vertexESD->GetCovMatrix(cov); //covariance matrix
1167 chi2perNDF = vertexESD->GetChi2toNDF();
1168 dispersion = vertexESD->GetDispersion();
1169 delete vertexESD; vertexESD=NULL;
1170
1171 vertexAOD = new AliAODVertex(pos,cov,chi2perNDF);
1172 vertexAOD->SetType(AliAODVertex::kUndef); // to be changed
1173
1174 return vertexAOD;
1175}
1176//-----------------------------------------------------------------------------
6a213b59 1177Bool_t AliAnalysisVertexingHF::SelectInvMass(Int_t decay,
1178 Int_t nprongs,
1179 Double_t *px,
1180 Double_t *py,
1181 Double_t *pz) const {
1182 // Check invariant mass cut
1183
1184 Short_t dummycharge=0;
1185 Double_t *dummyd0 = new Double_t[nprongs];
b056c5e3 1186 for(Int_t ip=0;ip<nprongs;ip++) dummyd0[ip]=0.;
6a213b59 1187 AliAODRecoDecay *rd = new AliAODRecoDecay(0x0,nprongs,dummycharge,px,py,pz,dummyd0);
1188 delete [] dummyd0;
1189
1190 UInt_t pdg2[2],pdg3[3];
1191 Double_t mPDG,minv;
1192
1193 Bool_t retval=kFALSE;
1194 switch (decay)
1195 {
1196 case 0: // D0->Kpi
1197 pdg2[0]=211; pdg2[1]=321;
1198 mPDG=TDatabasePDG::Instance()->GetParticle(421)->Mass();
1199 minv = rd->InvMass(nprongs,pdg2);
1200 if(TMath::Abs(minv-mPDG)<fD0toKpiCuts[0]) retval=kTRUE;
1201 pdg2[0]=321; pdg2[1]=211;
1202 minv = rd->InvMass(nprongs,pdg2);
1203 if(TMath::Abs(minv-mPDG)<fD0toKpiCuts[0]) retval=kTRUE;
1204 break;
1205 case 1: // JPSI->ee
1206 pdg2[0]=11; pdg2[1]=11;
1207 mPDG=TDatabasePDG::Instance()->GetParticle(443)->Mass();
1208 minv = rd->InvMass(nprongs,pdg2);
1209 if(TMath::Abs(minv-mPDG)<fBtoJPSICuts[0]) retval=kTRUE;
1210 break;
1211 case 2: // D+->Kpipi
1212 pdg3[0]=211; pdg3[1]=321; pdg3[2]=211;
1213 mPDG=TDatabasePDG::Instance()->GetParticle(411)->Mass();
1214 minv = rd->InvMass(nprongs,pdg3);
1215 if(TMath::Abs(minv-mPDG)<fDplusCuts[0]) retval=kTRUE;
b82f6d67 1216 // Ds+->KKpi
1217 pdg3[0]=321; pdg3[1]=321; pdg3[2]=211;
1218 mPDG=TDatabasePDG::Instance()->GetParticle(431)->Mass();
1219 minv = rd->InvMass(nprongs,pdg3);
1220 if(TMath::Abs(minv-mPDG)<fDsCuts[0]) retval=kTRUE;
1221 pdg3[0]=211; pdg3[1]=321; pdg3[2]=321;
1222 minv = rd->InvMass(nprongs,pdg3);
1223 if(TMath::Abs(minv-mPDG)<fDsCuts[0]) retval=kTRUE;
1224 // Lc->pKpi
1225 pdg3[0]=2212; pdg3[1]=321; pdg3[2]=211;
1226 mPDG=TDatabasePDG::Instance()->GetParticle(4122)->Mass();
1227 minv = rd->InvMass(nprongs,pdg3);
1228 if(TMath::Abs(minv-mPDG)<fLcCuts[0]) retval=kTRUE;
1229 pdg3[0]=211; pdg3[1]=321; pdg3[2]=2212;
1230 minv = rd->InvMass(nprongs,pdg3);
1231 if(TMath::Abs(minv-mPDG)<fLcCuts[0]) retval=kTRUE;
6a213b59 1232 break;
2ff20727 1233 case 3: // D*->D0pi
1234 pdg2[0]=421; pdg2[1]=211;
1235 mPDG=TDatabasePDG::Instance()->GetParticle(413)->Mass();
1236 minv = rd->InvMass(nprongs,pdg2);
1237 if(TMath::Abs(minv-mPDG)<fDstarCuts[0]) retval=kTRUE;
1238 break;
6a213b59 1239 default:
2ff20727 1240 printf("SelectInvMass(): wrong decay selection\n");
6a213b59 1241 break;
1242 }
1243
1244 delete rd;
1245
1246 return retval;
1247}
1248//-----------------------------------------------------------------------------
dcb444c9 1249void AliAnalysisVertexingHF::SelectTracksAndCopyVertex(AliVEvent *event,
2ff20727 1250 TObjArray &seleTrksArray,Int_t &nSeleTrks,
1251 UChar_t *seleFlags)
6a213b59 1252{
2ff20727 1253 // Apply single-track preselection.
1254 // Fill a TObjArray with selected tracks (for displaced vertices or
1255 // soft pion from D*). Selection flag stored in seleFlags.
dcb444c9 1256 // Create the AliESDVertex object (convert from AliAODVertex if necessary)
1257 // In case of AOD input, also fill fAODMap for track index<->ID
1258
1259 const AliVVertex *vprimary = event->GetPrimaryVertex();
1260
1261 if(fV1) { delete fV1; fV1=NULL; }
1262 if(fAODMap) { delete [] fAODMap; fAODMap=NULL; }
1263
1264 Int_t nindices=0;
1265 UShort_t *indices = 0;
1266 Double_t pos[3],cov[6];
1267
1268 if(!fInputAOD) { // ESD
1269 fV1 = new AliESDVertex(*((AliESDVertex*)vprimary));
1270 } else { // AOD
1271 vprimary->GetXYZ(pos);
1272 vprimary->GetCovarianceMatrix(cov);
1273 fV1 = new AliESDVertex(pos,cov,100.,100,vprimary->GetName());
1274 indices = new UShort_t[event->GetNumberOfTracks()];
1275 fAODMap = new Int_t[100000];
1276 }
1277
1278
dcb444c9 1279 Int_t entries = (Int_t)event->GetNumberOfTracks();
2ff20727 1280 Bool_t okDisplaced=kFALSE,okSoftPi=kFALSE;
1281 nSeleTrks=0;
6a213b59 1282
dcb444c9 1283 // transfer ITS tracks from event to arrays
6a213b59 1284 for(Int_t i=0; i<entries; i++) {
dcb444c9 1285 AliVTrack *track = (AliVTrack*)event->GetTrack(i);
1286
1287 if(fInputAOD) {
1288 AliAODTrack *aodt = (AliAODTrack*)track;
1289 if(aodt->GetUsedForPrimVtxFit()) {
1290 indices[nindices]=aodt->GetID(); nindices++;
1291 }
1292 fAODMap[(Int_t)aodt->GetID()] = i;
1293 }
6a213b59 1294
dcb444c9 1295 AliESDtrack *esdt = 0;
1296 if(!fInputAOD) {
1297 esdt = (AliESDtrack*)track;
1298 } else {
1299 esdt = new AliESDtrack(track);
1300 }
6a213b59 1301
1302 // single track selection
2ff20727 1303 okDisplaced=kFALSE; okSoftPi=kFALSE;
1304 if(SingleTrkCuts(esdt,okDisplaced,okSoftPi)) {
1305 seleTrksArray.AddLast(esdt);
1306 seleFlags[nSeleTrks]=0;
1307 if(okDisplaced) SETBIT(seleFlags[nSeleTrks],kBitDispl);
1308 if(okSoftPi) SETBIT(seleFlags[nSeleTrks],kBitSoftPi);
1309 nSeleTrks++;
1310 } else {
dcb444c9 1311 if(fInputAOD) delete esdt;
1312 esdt = NULL;
1313 continue;
2ff20727 1314 }
6a213b59 1315
dcb444c9 1316 } // end loop on tracks
1317
1318 // primary vertex from AOD
1319 if(fInputAOD) {
1320 delete fV1; fV1=NULL;
1321 vprimary->GetXYZ(pos);
1322 vprimary->GetCovarianceMatrix(cov);
1323 Double_t chi2toNDF = vprimary->GetChi2perNDF();
1324 Int_t ncontr=nindices;
a6e0ebfe 1325 if(!strcmp(vprimary->GetTitle(),"VertexerTracksWithContraint")) ncontr += 1;
dcb444c9 1326 Double_t chi2=chi2toNDF*(2.*(Double_t)ncontr-3.);
1327 fV1 = new AliESDVertex(pos,cov,chi2,ncontr,vprimary->GetName());
1328 fV1->SetTitle(vprimary->GetTitle());
1329 fV1->SetIndices(nindices,indices);
1330 }
1331 if(indices) { delete [] indices; indices=NULL; }
1332
6a213b59 1333
1334 return;
1335}
1336//-----------------------------------------------------------------------------
1337void AliAnalysisVertexingHF::SetD0toKpiCuts(Double_t cut0,Double_t cut1,
1338 Double_t cut2,Double_t cut3,Double_t cut4,
1339 Double_t cut5,Double_t cut6,
1340 Double_t cut7,Double_t cut8)
1341{
1342 // Set the cuts for D0 selection
1343 fD0toKpiCuts[0] = cut0;
1344 fD0toKpiCuts[1] = cut1;
1345 fD0toKpiCuts[2] = cut2;
1346 fD0toKpiCuts[3] = cut3;
1347 fD0toKpiCuts[4] = cut4;
1348 fD0toKpiCuts[5] = cut5;
1349 fD0toKpiCuts[6] = cut6;
1350 fD0toKpiCuts[7] = cut7;
1351 fD0toKpiCuts[8] = cut8;
1352
1353 return;
1354}
1355//-----------------------------------------------------------------------------
1356void AliAnalysisVertexingHF::SetD0toKpiCuts(const Double_t cuts[9])
1357{
1358 // Set the cuts for D0 selection
1359
1360 for(Int_t i=0; i<9; i++) fD0toKpiCuts[i] = cuts[i];
1361
1362 return;
1363}
1364//-----------------------------------------------------------------------------
2ff20727 1365void AliAnalysisVertexingHF::SetD0fromDstarCuts(Double_t cut0,Double_t cut1,
1366 Double_t cut2,Double_t cut3,Double_t cut4,
1367 Double_t cut5,Double_t cut6,
1368 Double_t cut7,Double_t cut8)
1369{
1370 // Set the cuts for D0 from D* selection
1371 fD0fromDstarCuts[0] = cut0;
1372 fD0fromDstarCuts[1] = cut1;
1373 fD0fromDstarCuts[2] = cut2;
1374 fD0fromDstarCuts[3] = cut3;
1375 fD0fromDstarCuts[4] = cut4;
1376 fD0fromDstarCuts[5] = cut5;
1377 fD0fromDstarCuts[6] = cut6;
1378 fD0fromDstarCuts[7] = cut7;
1379 fD0fromDstarCuts[8] = cut8;
1380
1381 return;
1382}
1383//-----------------------------------------------------------------------------
1384void AliAnalysisVertexingHF::SetD0fromDstarCuts(const Double_t cuts[9])
1385{
1386 // Set the cuts for D0 from D* selection
1387
1388 for(Int_t i=0; i<9; i++) fD0fromDstarCuts[i] = cuts[i];
1389
1390 return;
1391}
1392//-----------------------------------------------------------------------------
1393void AliAnalysisVertexingHF::SetDstarCuts(Double_t cut0,Double_t cut1,
1394 Double_t cut2,Double_t cut3,
1395 Double_t cut4)
1396{
1397 // Set the cuts for D* selection
1398 fDstarCuts[0] = cut0;
1399 fDstarCuts[1] = cut1;
1400 fDstarCuts[2] = cut2;
1401 fDstarCuts[3] = cut3;
1402 fDstarCuts[4] = cut4;
1403
1404 return;
1405}
1406//-----------------------------------------------------------------------------
1407void AliAnalysisVertexingHF::SetDstarCuts(const Double_t cuts[5])
1408{
1409 // Set the cuts for D* selection
1410
1411 for(Int_t i=0; i<5; i++) fDstarCuts[i] = cuts[i];
1412
1413 return;
1414}
1415//-----------------------------------------------------------------------------
6a213b59 1416void AliAnalysisVertexingHF::SetBtoJPSICuts(Double_t cut0,Double_t cut1,
1417 Double_t cut2,Double_t cut3,Double_t cut4,
1418 Double_t cut5,Double_t cut6,
1419 Double_t cut7,Double_t cut8)
1420{
1421 // Set the cuts for J/psi from B selection
1422 fBtoJPSICuts[0] = cut0;
1423 fBtoJPSICuts[1] = cut1;
1424 fBtoJPSICuts[2] = cut2;
1425 fBtoJPSICuts[3] = cut3;
1426 fBtoJPSICuts[4] = cut4;
1427 fBtoJPSICuts[5] = cut5;
1428 fBtoJPSICuts[6] = cut6;
1429 fBtoJPSICuts[7] = cut7;
1430 fBtoJPSICuts[8] = cut8;
1431
1432 return;
1433}
1434//-----------------------------------------------------------------------------
1435void AliAnalysisVertexingHF::SetBtoJPSICuts(const Double_t cuts[9])
1436{
1437 // Set the cuts for J/psi from B selection
1438
1439 for(Int_t i=0; i<9; i++) fBtoJPSICuts[i] = cuts[i];
1440
1441 return;
1442}
1443//-----------------------------------------------------------------------------
1444void AliAnalysisVertexingHF::SetDplusCuts(Double_t cut0,Double_t cut1,
1445 Double_t cut2,Double_t cut3,Double_t cut4,
1446 Double_t cut5,Double_t cut6,
1447 Double_t cut7,Double_t cut8,
1448 Double_t cut9,Double_t cut10,Double_t cut11)
1449{
1450 // Set the cuts for Dplus->Kpipi selection
1451 fDplusCuts[0] = cut0;
1452 fDplusCuts[1] = cut1;
1453 fDplusCuts[2] = cut2;
1454 fDplusCuts[3] = cut3;
1455 fDplusCuts[4] = cut4;
1456 fDplusCuts[5] = cut5;
1457 fDplusCuts[6] = cut6;
1458 fDplusCuts[7] = cut7;
1459 fDplusCuts[8] = cut8;
1460 fDplusCuts[9] = cut9;
1461 fDplusCuts[10] = cut10;
1462 fDplusCuts[11] = cut11;
1463
1464 return;
1465}
1466//-----------------------------------------------------------------------------
1467void AliAnalysisVertexingHF::SetDplusCuts(const Double_t cuts[12])
1468{
b82f6d67 1469 // Set the cuts for Dplus->Kpipi selection
6a213b59 1470
1471 for(Int_t i=0; i<12; i++) fDplusCuts[i] = cuts[i];
1472
1473 return;
1474}
1475//-----------------------------------------------------------------------------
6ea608bf 1476void AliAnalysisVertexingHF::SetDsCuts(Double_t cut0,Double_t cut1,
1477 Double_t cut2,Double_t cut3,Double_t cut4,
1478 Double_t cut5,Double_t cut6,
1479 Double_t cut7,Double_t cut8,
81679460 1480 Double_t cut9,Double_t cut10,
1481 Double_t cut11,Double_t cut12)
b82f6d67 1482{
1483 // Set the cuts for Ds->KKpi selection
1484 fDsCuts[0] = cut0;
6ea608bf 1485 fDsCuts[1] = cut1;
1486 fDsCuts[2] = cut2;
1487 fDsCuts[3] = cut3;
1488 fDsCuts[4] = cut4;
1489 fDsCuts[5] = cut5;
1490 fDsCuts[6] = cut6;
1491 fDsCuts[7] = cut7;
1492 fDsCuts[8] = cut8;
1493 fDsCuts[9] = cut9;
1494 fDsCuts[10] = cut10;
1495 fDsCuts[11] = cut11;
81679460 1496 fDsCuts[12] = cut12;
b82f6d67 1497
1498 return;
1499}
1500//-----------------------------------------------------------------------------
81679460 1501void AliAnalysisVertexingHF::SetDsCuts(const Double_t cuts[13])
b82f6d67 1502{
1503 // Set the cuts for Ds->KKpi selection
1504
81679460 1505 for(Int_t i=0; i<13; i++) fDsCuts[i] = cuts[i];
b82f6d67 1506
1507 return;
1508}
1509//-----------------------------------------------------------------------------
6ea608bf 1510void AliAnalysisVertexingHF::SetLcCuts(Double_t cut0,Double_t cut1,
1511 Double_t cut2,Double_t cut3,Double_t cut4,
1512 Double_t cut5,Double_t cut6,
1513 Double_t cut7,Double_t cut8,
1514 Double_t cut9,Double_t cut10,Double_t cut11)
b82f6d67 1515{
1516 // Set the cuts for Lc->pKpi selection
1517 fLcCuts[0] = cut0;
6ea608bf 1518 fLcCuts[1] = cut1;
1519 fLcCuts[2] = cut2;
1520 fLcCuts[3] = cut3;
1521 fLcCuts[4] = cut4;
1522 fLcCuts[5] = cut5;
1523 fLcCuts[6] = cut6;
1524 fLcCuts[7] = cut7;
1525 fLcCuts[8] = cut8;
1526 fLcCuts[9] = cut9;
1527 fLcCuts[10] = cut10;
1528 fLcCuts[11] = cut11;
b82f6d67 1529
1530 return;
1531}
1532//-----------------------------------------------------------------------------
6ea608bf 1533void AliAnalysisVertexingHF::SetLcCuts(const Double_t cuts[12])
b82f6d67 1534{
1535 // Set the cuts for Lc->pKpi selection
1536
6ea608bf 1537 for(Int_t i=0; i<12; i++) fLcCuts[i] = cuts[i];
b82f6d67 1538
1539 return;
1540}
1541//-----------------------------------------------------------------------------
2ff20727 1542Bool_t AliAnalysisVertexingHF::SingleTrkCuts(AliESDtrack *trk,
1543 Bool_t &okDisplaced,Bool_t &okSoftPi) const
6a213b59 1544{
1545 // Check if track passes some kinematical cuts
6a213b59 1546
f8fa4595 1547 // this is needed to store the impact parameters
1548 trk->RelateToVertex(fV1,fBzkG,kVeryBig);
1549
2ff20727 1550 UInt_t selectInfo;
f8fa4595 1551 //
2ff20727 1552 // Track selection, displaced tracks
1553 selectInfo = 0;
f8fa4595 1554 if(fTrackFilter) {
1555 selectInfo = fTrackFilter->IsSelected(trk);
6a213b59 1556 }
2ff20727 1557 if(selectInfo) okDisplaced=kTRUE;
1558 // Track selection, soft pions
1559 selectInfo = 0;
1560 if(fDstar && fTrackFilterSoftPi) {
1561 selectInfo = fTrackFilterSoftPi->IsSelected(trk);
1562 }
1563 if(selectInfo) okSoftPi=kTRUE;
6a213b59 1564
2ff20727 1565 if(okDisplaced || okSoftPi) return kTRUE;
f8fa4595 1566
2ff20727 1567 return kFALSE;
6a213b59 1568}
1569//-----------------------------------------------------------------------------