PWG3/vertexingHF/AliAnalysisVertexingHF.cxx

   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   *
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  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
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  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 //----------------------------------------------------------------------------
  17 //    Implementation of the heavy-flavour vertexing analysis class
  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.
  22 //
  23 //  Contact: andrea.dainese@lnl.infn.it
  24 //  Contributors: E.Bruna, G.E.Bruno, A.Dainese, C.Di Gliglio,
  25 //                F.Prino, R.Romita, X.M.Zhang
  26 //----------------------------------------------------------------------------
  27 #include <TFile.h>
  28 #include <TDatabasePDG.h>
  29 #include <TString.h>
  30 #include "AliLog.h"
  31 #include "AliVEvent.h"
  32 #include "AliVVertex.h"
  33 #include "AliVTrack.h"
  34 #include "AliVertexerTracks.h"
  35 #include "AliKFVertex.h"
  36 #include "AliESDEvent.h"
  37 #include "AliESDVertex.h"
  38 #include "AliExternalTrackParam.h"
  39 #include "AliNeutralTrackParam.h"
  40 #include "AliESDtrack.h"
  41 #include "AliESDtrackCuts.h"
  42 #include "AliAODEvent.h"
  43 #include "AliAODRecoDecay.h"
  44 #include "AliAODRecoDecayHF.h"
  45 #include "AliAODRecoDecayHF2Prong.h"
  46 #include "AliAODRecoDecayHF3Prong.h"
  47 #include "AliAODRecoDecayHF4Prong.h"
  48 #include "AliAODRecoCascadeHF.h"
  49 #include "AliAnalysisFilter.h"
  50 #include "AliAnalysisVertexingHF.h"
  51
  52 ClassImp(AliAnalysisVertexingHF)
  53
  54 //----------------------------------------------------------------------------
  55 AliAnalysisVertexingHF::AliAnalysisVertexingHF():
  56 fInputAOD(kFALSE),
  57 fAODMap(0),
  58 fBzkG(0.),
  59 fSecVtxWithKF(kFALSE),
  60 fRecoPrimVtxSkippingTrks(kFALSE),
  61 fRmTrksFromPrimVtx(kFALSE),
  62 fV1(0x0),
  63 fD0toKpi(kTRUE),
  64 fJPSItoEle(kTRUE),
  65 f3Prong(kTRUE),
  66 f4Prong(kTRUE),
  67 fDstar(kTRUE),
  68 fLikeSign(kFALSE),
  69 fTrackFilter(0x0),
  70 fTrackFilterSoftPi(0x0)
  71 {
  72   // Default constructor
  73
  74   SetD0toKpiCuts();
  75   SetBtoJPSICuts();
  76   SetDplusCuts();
  77   SetDsCuts();
  78   SetLcCuts();
  79   SetDstarCuts();
  80
  81 }
  82 //--------------------------------------------------------------------------
  83 AliAnalysisVertexingHF::AliAnalysisVertexingHF(const AliAnalysisVertexingHF &source) :
  84 TNamed(source),
  85 fInputAOD(source.fInputAOD),
  86 fAODMap(source.fAODMap),
  87 fBzkG(source.fBzkG),
  88 fSecVtxWithKF(source.fSecVtxWithKF),
  89 fRecoPrimVtxSkippingTrks(source.fRecoPrimVtxSkippingTrks),
  90 fRmTrksFromPrimVtx(source.fRmTrksFromPrimVtx),
  91 fV1(source.fV1),
  92 fD0toKpi(source.fD0toKpi),
  93 fJPSItoEle(source.fJPSItoEle),
  94 f3Prong(source.f3Prong),
  95 f4Prong(source.f4Prong),
  96 fDstar(source.fDstar),
  97 fLikeSign(source.fLikeSign),
  98 fTrackFilter(source.fTrackFilter),
  99 fTrackFilterSoftPi(source.fTrackFilterSoftPi)
 100 {
 101   //
 102   // Copy constructor
 103   //
 104   for(Int_t i=0; i<9; i++)  fD0toKpiCuts[i]=source.fD0toKpiCuts[i];
 105   for(Int_t i=0; i<9; i++)  fBtoJPSICuts[i]=source.fBtoJPSICuts[i];
 106   for(Int_t i=0; i<12; i++) fDplusCuts[i]=source.fDplusCuts[i];
 107   for(Int_t i=0; i<13; i++) fDsCuts[i]=source.fDsCuts[i];
 108   for(Int_t i=0; i<12; i++) fLcCuts[i]=source.fLcCuts[i];
 109   for(Int_t i=0; i<5; i++)  fDstarCuts[i]=source.fDstarCuts[i];
 110 }
 111 //--------------------------------------------------------------------------
 112 AliAnalysisVertexingHF &AliAnalysisVertexingHF::operator=(const AliAnalysisVertexingHF &source)
 113 {
 114   //
 115   // assignment operator
 116   //
 117   if(&source == this) return *this;
 118   fInputAOD = source.fInputAOD;
 119   fBzkG = source.fBzkG;
 120   fSecVtxWithKF = source.fSecVtxWithKF;
 121   fRecoPrimVtxSkippingTrks = source.fRecoPrimVtxSkippingTrks;
 122   fRmTrksFromPrimVtx = source.fRmTrksFromPrimVtx;
 123   fV1 = source.fV1;
 124   fD0toKpi = source.fD0toKpi;
 125   fJPSItoEle = source.fJPSItoEle;
 126   f3Prong = source.f3Prong;
 127   f4Prong = source.f4Prong;
 128   fDstar = source.fDstar;
 129   fLikeSign = source.fLikeSign;
 130   fTrackFilter = source.fTrackFilter;
 131   fTrackFilterSoftPi = source.fTrackFilterSoftPi;
 132
 133   for(Int_t i=0; i<9; i++)  fD0toKpiCuts[i]=source.fD0toKpiCuts[i];
 134   for(Int_t i=0; i<9; i++)  fBtoJPSICuts[i]=source.fBtoJPSICuts[i];
 135   for(Int_t i=0; i<12; i++) fDplusCuts[i]=source.fDplusCuts[i];
 136   for(Int_t i=0; i<13; i++) fDsCuts[i]=source.fDsCuts[i];
 137   for(Int_t i=0; i<12; i++) fLcCuts[i]=source.fLcCuts[i];
 138   for(Int_t i=0; i<5; i++)  fDstarCuts[i]=source.fDstarCuts[i];
 139
 140   return *this;
 141 }
 142 //----------------------------------------------------------------------------
 143 AliAnalysisVertexingHF::~AliAnalysisVertexingHF() {
 144   // Destructor
 145   if(fV1) { delete fV1; fV1=0; }
 146   if(fTrackFilter) { delete fTrackFilter; fTrackFilter=0; }
 147   if(fTrackFilterSoftPi) { delete fTrackFilterSoftPi; fTrackFilterSoftPi=0; }
 148 }
 149 //----------------------------------------------------------------------------
 150 void AliAnalysisVertexingHF::FindCandidates(AliVEvent *event,
 151                                             TClonesArray *aodVerticesHFTClArr,
 152                                             TClonesArray *aodD0toKpiTClArr,
 153                                             TClonesArray *aodJPSItoEleTClArr,
 154                                             TClonesArray *aodCharm3ProngTClArr,
 155                                             TClonesArray *aodCharm4ProngTClArr,
 156                                             TClonesArray *aodDstarTClArr,
 157                                             TClonesArray *aodLikeSignTClArr)
 158 {
 159   // Find heavy-flavour vertex candidates
 160   // Input:  ESD or AOD
 161   // Output: AOD (additional branches added)
 162
 163
 164   TString evtype = event->IsA()->GetName();
 165   fInputAOD = ((evtype=="AliAODEvent") ? kTRUE : kFALSE);
 166
 167   if(!aodVerticesHFTClArr) {
 168     printf("ERROR: no aodVerticesHFTClArr");
 169     return;
 170   }
 171   if((fD0toKpi || fDstar) && !aodD0toKpiTClArr) {
 172     printf("ERROR: no aodD0toKpiTClArr");
 173     return;
 174   }
 175   if(fJPSItoEle && !aodJPSItoEleTClArr) {
 176     printf("ERROR: no aodJPSItoEleTClArr");
 177     return;
 178   }
 179   if(f3Prong && !aodCharm3ProngTClArr) {
 180     printf("ERROR: no aodCharm3ProngTClArr");
 181     return;
 182   }
 183   if(f4Prong && !aodCharm4ProngTClArr) {
 184     printf("ERROR: no aodCharm4ProngTClArr");
 185     return;
 186   }
 187   if(fDstar && !aodDstarTClArr) {
 188     printf("ERROR: no aodDstarTClArr");
 189     return;
 190   }
 191   if(fLikeSign && !aodLikeSignTClArr) {
 192     printf("ERROR: no aodLikeSignTClArr");
 193     return;
 194   }
 195
 196   // delete candidates from previous event and create references
 197   Int_t iVerticesHF=0,iD0toKpi=0,iJPSItoEle=0,i3Prong=0,i4Prong=0,iDstar=0,iLikeSign=0;
 198   aodVerticesHFTClArr->Delete();
 199   iVerticesHF = aodVerticesHFTClArr->GetEntriesFast();
 200   TClonesArray &verticesHFRef = *aodVerticesHFTClArr;
 201   if(fD0toKpi || fDstar)   {
 202     aodD0toKpiTClArr->Delete();
 203     iD0toKpi = aodD0toKpiTClArr->GetEntriesFast();
 204   }
 205   if(fJPSItoEle) {
 206     aodJPSItoEleTClArr->Delete();
 207     iJPSItoEle = aodJPSItoEleTClArr->GetEntriesFast();
 208   }
 209   if(f3Prong) {
 210     aodCharm3ProngTClArr->Delete();
 211     i3Prong = aodCharm3ProngTClArr->GetEntriesFast();
 212   }
 213   if(f4Prong) {
 214     aodCharm4ProngTClArr->Delete();
 215     i4Prong = aodCharm4ProngTClArr->GetEntriesFast();
 216   }
 217   if(fDstar) {
 218     aodDstarTClArr->Delete();
 219     iDstar = aodDstarTClArr->GetEntriesFast();
 220   }
 221   if(fLikeSign)   {
 222     aodLikeSignTClArr->Delete();
 223     iLikeSign = aodLikeSignTClArr->GetEntriesFast();
 224   }
 225   TClonesArray &aodD0toKpiRef      = *aodD0toKpiTClArr;
 226   TClonesArray &aodJPSItoEleRef    = *aodJPSItoEleTClArr;
 227   TClonesArray &aodCharm3ProngRef  = *aodCharm3ProngTClArr;
 228   TClonesArray &aodCharm4ProngRef  = *aodCharm4ProngTClArr;
 229   TClonesArray &aodDstarRef        = *aodDstarTClArr;
 230   TClonesArray &aodLikeSignRef     = *aodLikeSignTClArr;
 231
 232
 233   AliAODRecoDecayHF2Prong *io2Prong  = 0;
 234   AliAODRecoDecayHF3Prong *io3Prong  = 0;
 235   AliAODRecoDecayHF4Prong *io4Prong  = 0;
 236   AliAODRecoCascadeHF     *ioCascade = 0;
 237
 238   Int_t    iTrkP1,iTrkP2,iTrkN1,iTrkN2,iTrkSoftPi,trkEntries;
 239   Double_t xdummy,ydummy,dcap1n1,dcap1n2,dcap2n1,dcap1p2,dcan1n2,dcaCasc;
 240   Bool_t   okD0=kFALSE,okJPSI=kFALSE,ok3Prong=kFALSE,ok4Prong=kFALSE;
 241   Bool_t   okDstar=kFALSE,okD0fromDstar=kFALSE;
 242   AliESDtrack *postrack1 = 0;
 243   AliESDtrack *postrack2 = 0;
 244   AliESDtrack *negtrack1 = 0;
 245   AliESDtrack *negtrack2 = 0;
 246   AliESDtrack *trackPi   = 0;
 247   Double_t dcaMax = fD0toKpiCuts[1];
 248   if(dcaMax < fBtoJPSICuts[1]) dcaMax=fBtoJPSICuts[1];
 249   if(dcaMax < fDplusCuts[11])  dcaMax=fDplusCuts[11];
 250   AliDebug(2,Form(" dca cut set to %f cm",dcaMax));
 251
 252
 253   // get Bz
 254   fBzkG = (Double_t)event->GetMagneticField();
 255
 256   trkEntries = (Int_t)event->GetNumberOfTracks();
 257   AliDebug(1,Form(" Number of tracks: %d",trkEntries));
 258
 259   if(trkEntries<2) {
 260     AliDebug(1,Form(" Not enough tracks: %d",trkEntries));
 261     return;
 262   }
 263
 264   const AliVVertex *primary = event->GetPrimaryVertex();
 265   if(!primary) {
 266     AliDebug(1," No primary vertex from tracks");
 267     return;
 268   }
 269   TString primTitle = primary->GetTitle();
 270   if(!primTitle.Contains("VertexerTracks")) {
 271     AliDebug(1," No primary vertex from tracks");
 272     return;
 273   }
 274
 275   // call function that applies sigle-track selection,
 276   // for displaced tracks and soft pions (both charges) for D*,
 277   // and retrieves primary vertex
 278   TObjArray seleTrksArray(trkEntries);
 279   UChar_t  *seleFlags = new UChar_t[trkEntries]; // bit 0: displaced, bit 1: softpi
 280   Int_t     nSeleTrks=0;
 281   SelectTracksAndCopyVertex(event,seleTrksArray,nSeleTrks,seleFlags);
 282
 283   AliDebug(1,Form(" Selected tracks: %d",nSeleTrks));
 284
 285   TObjArray *twoTrackArray1    = new TObjArray(2);
 286   TObjArray *twoTrackArray2    = new TObjArray(2);
 287   TObjArray *twoTrackArrayCasc = new TObjArray(2);
 288   TObjArray *threeTrackArray   = new TObjArray(3);
 289   TObjArray *fourTrackArray    = new TObjArray(4);
 290
 291   Double_t dispersion;
 292   Bool_t isLikeSignPair=kFALSE;
 293
 294   AliAODRecoDecayHF   *rd = 0;
 295   AliAODRecoCascadeHF *rc = 0;
 296
 297   // LOOP ON  POSITIVE  TRACKS
 298   for(iTrkP1=0; iTrkP1<nSeleTrks; iTrkP1++) {
 299
 300     if(iTrkP1%1==0) AliDebug(1,Form("  1st loop on pos: track number %d of %d",iTrkP1,nSeleTrks));
 301
 302     // get track from tracks array
 303     postrack1 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkP1);
 304
 305     if(!TESTBIT(seleFlags[iTrkP1],kBitDispl)) continue;
 306
 307     if(postrack1->Charge()<0 && !fLikeSign) continue;
 308
 309     // LOOP ON  NEGATIVE  TRACKS
 310     for(iTrkN1=0; iTrkN1<nSeleTrks; iTrkN1++) {
 311
 312       if(iTrkN1%1==0) AliDebug(1,Form("    1st loop on neg: track number %d of %d",iTrkN1,nSeleTrks));
 313
 314       if(iTrkN1==iTrkP1) continue;
 315
 316       // get track from tracks array
 317       negtrack1 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN1);
 318
 319       if(negtrack1->Charge()>0 && !fLikeSign) continue;
 320
 321       if(!TESTBIT(seleFlags[iTrkN1],kBitDispl)) continue;
 322
 323       if(postrack1->Charge()==negtrack1->Charge()) { // like-sign
 324         isLikeSignPair=kTRUE;
 325         if(!fLikeSign)    continue;
 326         if(iTrkN1<iTrkP1) continue; // this is needed to avoid double-counting of like-sign
 327       } else { // unlike-sign
 328         isLikeSignPair=kFALSE;
 329         if(postrack1->Charge()<0 || negtrack1->Charge()>0) continue;  // this is needed to avoid double-counting of unlike-sign
 330       }
 331
 332       // back to primary vertex
 333       postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 334       negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 335
 336       // DCA between the two tracks
 337       dcap1n1 = postrack1->GetDCA(negtrack1,fBzkG,xdummy,ydummy);
 338       if(dcap1n1>dcaMax) { negtrack1=0; continue; }
 339
 340       // Vertexing
 341       twoTrackArray1->AddAt(postrack1,0);
 342       twoTrackArray1->AddAt(negtrack1,1);
 343       AliAODVertex *vertexp1n1 = ReconstructSecondaryVertex(twoTrackArray1,dispersion);
 344       if(!vertexp1n1) {
 345         twoTrackArray1->Clear();
 346         negtrack1=0;
 347         continue;
 348       }
 349
 350       // 2 prong candidate
 351       if(fD0toKpi || fJPSItoEle || fDstar || fLikeSign) {
 352
 353         io2Prong = Make2Prong(twoTrackArray1,event,vertexp1n1,dcap1n1,okD0,okJPSI,okD0fromDstar);
 354
 355         if((fD0toKpi && okD0) || (fJPSItoEle && okJPSI) || (isLikeSignPair && (okD0 || okJPSI))) {
 356           // add the vertex and the decay to the AOD
 357           AliAODVertex *v2Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexp1n1);
 358           if(fInputAOD) AddDaughterRefs(v2Prong,event,twoTrackArray1);
 359           if(!isLikeSignPair) {
 360             if(okD0) {
 361               rd = new(aodD0toKpiRef[iD0toKpi++])AliAODRecoDecayHF2Prong(*io2Prong);
 362               rd->SetSecondaryVtx(v2Prong);
 363               v2Prong->SetParent(rd);
 364             }
 365             if(okJPSI) {
 366               rd = new(aodJPSItoEleRef[iJPSItoEle++])AliAODRecoDecayHF2Prong(*io2Prong);
 367               rd->SetSecondaryVtx(v2Prong);
 368               if(!okD0) v2Prong->SetParent(rd); // it cannot have two mothers ...
 369             }
 370           } else { // isLikeSignPair
 371             rd = new(aodLikeSignRef[iLikeSign++])AliAODRecoDecayHF2Prong(*io2Prong);
 372             rd->SetSecondaryVtx(v2Prong);
 373             v2Prong->SetParent(rd);
 374           }
 375         }
 376         // D* candidates
 377         if(fDstar && okD0fromDstar && !isLikeSignPair) {
 378           // write references in io2Prong
 379           if(fInputAOD) {
 380             AddDaughterRefs(vertexp1n1,event,twoTrackArray1);
 381           } else {
 382             vertexp1n1->AddDaughter(postrack1);
 383             vertexp1n1->AddDaughter(negtrack1);
 384           }
 385           io2Prong->SetSecondaryVtx(vertexp1n1);
 386           //printf("--->  %d %d %d %d %d\n",vertexp1n1->GetNDaughters(),iTrkP1,iTrkN1,postrack1->Charge(),negtrack1->Charge());
 387           // create a track from the D0
 388           AliNeutralTrackParam *trackD0 = new AliNeutralTrackParam(io2Prong);
 389
 390           // LOOP ON TRACKS THAT PASSED THE SOFT PION CUTS
 391           for(iTrkSoftPi=0; iTrkSoftPi<nSeleTrks; iTrkSoftPi++) {
 392
 393             if(iTrkSoftPi==iTrkP1 || iTrkSoftPi==iTrkN1) continue;
 394
 395             if(!TESTBIT(seleFlags[iTrkSoftPi],kBitSoftPi)) continue;
 396
 397             if(iTrkSoftPi%1==0) AliDebug(1,Form("    1st loop on pi_s: track number %d of %d",iTrkSoftPi,nSeleTrks));
 398
 399             // get track from tracks array
 400             trackPi = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkSoftPi);
 401
 402             trackPi->PropagateToDCA(fV1,fBzkG,kVeryBig);
 403             trackD0->PropagateToDCA(fV1,fBzkG,kVeryBig);
 404
 405             // DCA between the two tracks
 406             dcaCasc = trackPi->GetDCA(trackD0,fBzkG,xdummy,ydummy);
 407
 408             // Vertexing
 409             twoTrackArrayCasc->AddAt(trackPi,0);
 410             twoTrackArrayCasc->AddAt(trackD0,1);
 411             AliAODVertex *vertexCasc = ReconstructSecondaryVertex(twoTrackArrayCasc,dispersion,kFALSE);
 412             if(!vertexCasc) {
 413               twoTrackArrayCasc->Clear();
 414               trackPi=0;
 415               continue;
 416             }
 417
 418             ioCascade = MakeCascade(twoTrackArrayCasc,event,vertexCasc,io2Prong,dcaCasc,okDstar);
 419             if(okDstar) {
 420               // add the D0 to the AOD (if not already done)
 421               if(!okD0) {
 422                 AliAODVertex *v2Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexp1n1);
 423                 if(fInputAOD) AddDaughterRefs(v2Prong,event,twoTrackArray1);
 424                 rd = new(aodD0toKpiRef[iD0toKpi++])AliAODRecoDecayHF2Prong(*io2Prong);
 425                 rd->SetSecondaryVtx(v2Prong);
 426                 v2Prong->SetParent(rd);
 427                 okD0=kTRUE; // this is done to add it only once
 428               }
 429               // add the vertex and the cascade to the AOD
 430               AliAODVertex *vCasc = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexCasc);
 431               if(fInputAOD) {
 432                 AddDaughterRefs(vCasc,event,twoTrackArrayCasc); // add the pion
 433               } else {
 434                 vCasc->AddDaughter(rd); // just to fill ref #0
 435               }
 436               vCasc->AddDaughter(rd); // add the D0 (in ref #1)
 437               rc = new(aodDstarRef[iDstar++])AliAODRecoCascadeHF(*ioCascade);
 438               rc->SetSecondaryVtx(vCasc);
 439               vCasc->SetParent(rc);
 440             }
 441             twoTrackArrayCasc->Clear();
 442             trackPi=0;
 443             ioCascade=NULL;
 444             delete vertexCasc;
 445           } // end loop on soft pi tracks
 446
 447           if(trackD0) {delete trackD0; trackD0=NULL;}
 448
 449         }
 450
 451         io2Prong=NULL;
 452       }
 453
 454       twoTrackArray1->Clear();
 455       if((!f3Prong && !f4Prong) || isLikeSignPair)  {
 456         negtrack1=0;
 457         delete vertexp1n1;
 458         continue;
 459       }
 460
 461
 462       // 2nd LOOP  ON  POSITIVE  TRACKS
 463       for(iTrkP2=iTrkP1+1; iTrkP2<nSeleTrks; iTrkP2++) {
 464
 465         if(iTrkP2==iTrkP1 || iTrkP2==iTrkN1) continue;
 466
 467         if(iTrkP2%1==0) AliDebug(1,Form("    2nd loop on pos: track number %d of %d",iTrkP2,nSeleTrks));
 468
 469         // get track from tracks array
 470         postrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkP2);
 471
 472         if(postrack2->Charge()<0) continue;
 473
 474         if(!TESTBIT(seleFlags[iTrkP2],kBitDispl)) continue;
 475
 476         // back to primary vertex
 477         postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 478         postrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 479         negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 480         //printf("********** %d %d %d\n",postrack1->GetID(),postrack2->GetID(),negtrack1->GetID());
 481
 482         dcap2n1 = postrack2->GetDCA(negtrack1,fBzkG,xdummy,ydummy);
 483         if(dcap2n1>dcaMax) { postrack2=0; continue; }
 484         dcap1p2 = postrack2->GetDCA(postrack1,fBzkG,xdummy,ydummy);
 485         if(dcap1p2>dcaMax) { postrack2=0; continue; }
 486
 487         // Vertexing
 488         twoTrackArray2->AddAt(postrack2,0);
 489         twoTrackArray2->AddAt(negtrack1,1);
 490         AliAODVertex *vertexp2n1 = ReconstructSecondaryVertex(twoTrackArray2,dispersion);
 491         if(!vertexp2n1) {
 492           twoTrackArray2->Clear();
 493           postrack2=0;
 494           continue;
 495         }
 496
 497         // 3 prong candidates
 498         if(f3Prong) {
 499
 500           threeTrackArray->AddAt(postrack1,0);
 501           threeTrackArray->AddAt(negtrack1,1);
 502           threeTrackArray->AddAt(postrack2,2);
 503
 504           AliAODVertex* secVert3PrAOD = ReconstructSecondaryVertex(threeTrackArray,dispersion);
 505           io3Prong = Make3Prong(threeTrackArray,event,secVert3PrAOD,dispersion,vertexp1n1,vertexp2n1,dcap1n1,dcap2n1,dcap1p2,ok3Prong);
 506           if(ok3Prong) {
 507             AliAODVertex *v3Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert3PrAOD);
 508             if(fInputAOD) AddDaughterRefs(v3Prong,event,threeTrackArray);
 509             rd = new(aodCharm3ProngRef[i3Prong++])AliAODRecoDecayHF3Prong(*io3Prong);
 510             rd->SetSecondaryVtx(v3Prong);
 511             v3Prong->SetParent(rd);
 512           }
 513           if(io3Prong) io3Prong=NULL;
 514         }
 515
 516         // 4 prong candidates
 517         if(f4Prong) {
 518
 519           // 3rd LOOP  ON  NEGATIVE  TRACKS (for 4 prong)
 520           for(iTrkN2=iTrkN1+1; iTrkN2<nSeleTrks; iTrkN2++) {
 521
 522             if(iTrkN2==iTrkP1 || iTrkN2==iTrkP2 || iTrkN2==iTrkN1) continue;
 523
 524             if(iTrkN2%1==0) AliDebug(1,Form("    3rd loop on neg: track number %d of %d",iTrkN2,nSeleTrks));
 525
 526             // get track from tracks array
 527             negtrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN2);
 528
 529             if(negtrack2->Charge()>0) continue;
 530
 531             if(!TESTBIT(seleFlags[iTrkN2],kBitDispl)) continue;
 532
 533             // back to primary vertex
 534             postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 535             postrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 536             negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 537             negtrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 538             dcap1n2 = postrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
 539             if(dcap1n2>dcaMax) { negtrack2=0; continue; }
 540
 541             // Vertexing
 542             fourTrackArray->AddAt(postrack1,0);
 543             fourTrackArray->AddAt(negtrack1,1);
 544             fourTrackArray->AddAt(postrack2,2);
 545             fourTrackArray->AddAt(negtrack2,3);
 546
 547             AliAODVertex* secVert4PrAOD = ReconstructSecondaryVertex(fourTrackArray,dispersion);
 548             io4Prong = Make4Prong(fourTrackArray,event,secVert4PrAOD,vertexp1n1,vertexp2n1,dcap1n1,dcap1n2,dcap2n1,ok4Prong);
 549             if(ok4Prong) {
 550               AliAODVertex *v4Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert4PrAOD);
 551               if(fInputAOD) AddDaughterRefs(v4Prong,event,fourTrackArray);
 552               rd = new(aodCharm4ProngRef[i4Prong++])AliAODRecoDecayHF4Prong(*io4Prong);
 553               rd->SetSecondaryVtx(v4Prong);
 554               v4Prong->SetParent(rd);
 555             }
 556
 557             if(io4Prong) io4Prong=NULL;
 558             fourTrackArray->Clear();
 559             negtrack2 = 0;
 560
 561           } // end loop on negative tracks
 562
 563         }
 564
 565         postrack2 = 0;
 566         delete vertexp2n1;
 567
 568       } // end 2nd loop on positive tracks
 569
 570       twoTrackArray2->Clear();
 571
 572       // 2nd LOOP  ON  NEGATIVE  TRACKS (for 3 prong +--)
 573       for(iTrkN2=iTrkN1+1; iTrkN2<nSeleTrks; iTrkN2++) {
 574
 575         if(iTrkN2==iTrkP1 || iTrkN2==iTrkP2 || iTrkN2==iTrkN1) continue;
 576
 577         if(iTrkN2%1==0) AliDebug(1,Form("    2nd loop on neg: track number %d of %d",iTrkN2,nSeleTrks));
 578
 579         // get track from tracks array
 580         negtrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN2);
 581
 582         if(negtrack2->Charge()>0) continue;
 583
 584         if(!TESTBIT(seleFlags[iTrkN2],kBitDispl)) continue;
 585
 586         // back to primary vertex
 587         postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 588         negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 589         negtrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 590         //printf("********** %d %d %d\n",postrack1->GetID(),negtrack1->GetID(),negtrack2->GetID());
 591
 592         dcap1n2 = postrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
 593         if(dcap1n2>dcaMax) { negtrack2=0; continue; }
 594         dcan1n2 = negtrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
 595         if(dcan1n2>dcaMax) { negtrack2=0; continue; }
 596
 597         // Vertexing
 598         twoTrackArray2->AddAt(postrack1,0);
 599         twoTrackArray2->AddAt(negtrack2,1);
 600
 601         AliAODVertex *vertexp1n2 = ReconstructSecondaryVertex(twoTrackArray2,dispersion);
 602         if(!vertexp1n2) {
 603           twoTrackArray2->Clear();
 604           negtrack2=0;
 605           continue;
 606         }
 607
 608         if(f3Prong) {
 609           threeTrackArray->AddAt(negtrack1,0);
 610           threeTrackArray->AddAt(postrack1,1);
 611           threeTrackArray->AddAt(negtrack2,2);
 612           AliAODVertex* secVert3PrAOD = ReconstructSecondaryVertex(threeTrackArray,dispersion);
 613           io3Prong = Make3Prong(threeTrackArray,event,secVert3PrAOD,dispersion,vertexp1n1,vertexp1n2,dcap1n1,dcap1n2,dcan1n2,ok3Prong);
 614           if(ok3Prong) {
 615             AliAODVertex *v3Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert3PrAOD);
 616             if(fInputAOD) AddDaughterRefs(v3Prong,event,threeTrackArray);
 617             rd = new(aodCharm3ProngRef[i3Prong++])AliAODRecoDecayHF3Prong(*io3Prong);
 618             rd->SetSecondaryVtx(v3Prong);
 619             v3Prong->SetParent(rd);
 620           }
 621           if(io3Prong) io3Prong=NULL;
 622         }
 623
 624         negtrack2 = 0;
 625         delete vertexp1n2;
 626
 627       } // end 2nd loop on negative tracks
 628       twoTrackArray2->Clear();
 629
 630       negtrack1 = 0;
 631       delete vertexp1n1;
 632     } // end 1st loop on negative tracks
 633
 634     postrack1 = 0;
 635   }  // end 1st loop on positive tracks
 636
 637
 638   AliDebug(1,Form(" Total HF vertices in event = %d;",
 639                   (Int_t)aodVerticesHFTClArr->GetEntriesFast()));
 640   if(fD0toKpi) {
 641     AliDebug(1,Form(" D0->Kpi in event = %d;",
 642                     (Int_t)aodD0toKpiTClArr->GetEntriesFast()));
 643   }
 644   if(fJPSItoEle) {
 645     AliDebug(1,Form(" JPSI->ee in event = %d;",
 646                     (Int_t)aodJPSItoEleTClArr->GetEntriesFast()));
 647   }
 648   if(f3Prong) {
 649     AliDebug(1,Form(" Charm->3Prong in event = %d;",
 650                     (Int_t)aodCharm3ProngTClArr->GetEntriesFast()));
 651   }
 652   if(f4Prong) {
 653     AliDebug(1,Form(" Charm->4Prong in event = %d;\n",
 654                     (Int_t)aodCharm4ProngTClArr->GetEntriesFast()));
 655   }
 656   if(fDstar) {
 657     AliDebug(1,Form(" D*->D0pi in event = %d;\n",
 658                     (Int_t)aodDstarTClArr->GetEntriesFast()));
 659   }
 660   if(fLikeSign) {
 661     AliDebug(1,Form(" Like-sign pairs in event = %d;\n",
 662                     (Int_t)aodLikeSignTClArr->GetEntriesFast()));
 663   }
 664
 665
 666   twoTrackArray1->Delete();  delete twoTrackArray1;
 667   twoTrackArray2->Delete();  delete twoTrackArray2;
 668   twoTrackArrayCasc->Delete();  delete twoTrackArrayCasc;
 669   threeTrackArray->Clear();
 670   threeTrackArray->Delete(); delete threeTrackArray;
 671   fourTrackArray->Delete();  delete fourTrackArray;
 672   delete [] seleFlags; seleFlags=NULL;
 673
 674   if(fInputAOD) {
 675     seleTrksArray.Delete();
 676   }
 677
 678   return;
 679 }
 680 //----------------------------------------------------------------------------
 681 void AliAnalysisVertexingHF::AddDaughterRefs(AliAODVertex *v,AliVEvent *event,
 682                                              TObjArray *trkArray) const
 683 {
 684   // Add the AOD tracks as daughters of the vertex (TRef)
 685
 686   Int_t nTrks = trkArray->GetEntriesFast();
 687
 688   AliExternalTrackParam *track = 0;
 689   AliAODTrack *aodTrack = 0;
 690   Int_t id;
 691
 692   for(Int_t i=0; i<nTrks; i++) {
 693     track = (AliExternalTrackParam*)trkArray->UncheckedAt(i);
 694     id = (Int_t)track->GetID();
 695     //printf("---> %d\n",id);
 696     if(id<0) continue; // this track is a AliAODRecoDecay
 697     aodTrack = (AliAODTrack*)event->GetTrack(fAODMap[id]);
 698     v->AddDaughter(aodTrack);
 699   }
 700
 701   return;
 702 }
 703 //----------------------------------------------------------------------------
 704 AliAODRecoCascadeHF* AliAnalysisVertexingHF::MakeCascade(
 705                                    TObjArray *twoTrackArray,AliVEvent *event,
 706                                    AliAODVertex *secVert,
 707                                    AliAODRecoDecayHF2Prong *rd2Prong,
 708                                    Double_t dca,
 709                                    Bool_t &okDstar) const
 710 {
 711   // Make the cascade as a 2Prong decay and check if it passes Dstar
 712   // reconstruction cuts
 713
 714   okDstar = kFALSE;
 715
 716   Bool_t dummy1,dummy2,dummy3;
 717
 718   // We use Make2Prong to construct the AliAODRecoCascadeHF
 719   // (which inherits from AliAODRecoDecayHF2Prong)
 720   AliAODRecoCascadeHF *theCascade =
 721     (AliAODRecoCascadeHF*)Make2Prong(twoTrackArray,event,secVert,dca,
 722                                      dummy1,dummy2,dummy3);
 723   if(!theCascade) return 0x0;
 724
 725   // charge
 726   AliESDtrack *trackPi = (AliESDtrack*)twoTrackArray->UncheckedAt(0);
 727   theCascade->SetCharge(trackPi->Charge());
 728
 729   //--- selection cuts
 730   //
 731   AliAODRecoCascadeHF *tmpCascade = new AliAODRecoCascadeHF(*theCascade);
 732   tmpCascade->GetSecondaryVtx()->AddDaughter(trackPi);
 733   tmpCascade->GetSecondaryVtx()->AddDaughter(rd2Prong);
 734   AliAODVertex *primVertexAOD=0;
 735   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
 736     // take event primary vertex
 737     primVertexAOD = PrimaryVertex();
 738     tmpCascade->SetOwnPrimaryVtx(primVertexAOD);
 739     rd2Prong->SetOwnPrimaryVtx(primVertexAOD);
 740   }
 741   // select D*->D0pi
 742   if(fDstar) {
 743     Bool_t testD0=kTRUE;
 744     okDstar = tmpCascade->SelectDstar(fDstarCuts,fD0fromDstarCuts,testD0);
 745   }
 746   tmpCascade->GetSecondaryVtx()->RemoveDaughters();
 747   tmpCascade->UnsetOwnPrimaryVtx();
 748   delete tmpCascade; tmpCascade=NULL;
 749   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
 750     rd2Prong->UnsetOwnPrimaryVtx();
 751     delete primVertexAOD; primVertexAOD=NULL;
 752   }
 753   //---
 754
 755   return theCascade;
 756 }
 757 //-----------------------------------------------------------------------------
 758 AliAODRecoDecayHF2Prong *AliAnalysisVertexingHF::Make2Prong(
 759                                    TObjArray *twoTrackArray,AliVEvent *event,
 760                                    AliAODVertex *secVert,Double_t dca,
 761                                    Bool_t &okD0,Bool_t &okJPSI,
 762                                    Bool_t &okD0fromDstar) const
 763 {
 764   // Make 2Prong candidates and check if they pass D0toKpi or BtoJPSI
 765   // reconstruction cuts
 766   // G.E.Bruno (J/psi), A.Dainese (D0->Kpi)
 767
 768   okD0=kFALSE; okJPSI=kFALSE; okD0fromDstar=kFALSE;
 769
 770   Double_t px[2],py[2],pz[2],d0[2],d0err[2];
 771
 772   AliESDtrack *postrack = (AliESDtrack*)twoTrackArray->UncheckedAt(0);
 773   AliESDtrack *negtrack = (AliESDtrack*)twoTrackArray->UncheckedAt(1);
 774
 775   // propagate tracks to secondary vertex, to compute inv. mass
 776   postrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
 777   negtrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
 778
 779   Double_t momentum[3];
 780   postrack->GetPxPyPz(momentum);
 781   px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
 782   negtrack->GetPxPyPz(momentum);
 783   px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
 784
 785
 786   // invariant mass cut (try to improve coding here..)
 787   Bool_t okMassCut=kFALSE;
 788   if(!okMassCut && fD0toKpi)   if(SelectInvMass(0,2,px,py,pz)) okMassCut=kTRUE;
 789   if(!okMassCut && fJPSItoEle) if(SelectInvMass(1,2,px,py,pz)) okMassCut=kTRUE;
 790   if(!okMassCut && fDstar)     if(SelectInvMass(3,2,px,py,pz)) okMassCut=kTRUE;
 791   if(!okMassCut) {
 792     AliDebug(2," candidate didn't pass mass cut");
 793     return 0x0;
 794   }
 795
 796   // primary vertex to be used by this candidate
 797   AliAODVertex *primVertexAOD  = PrimaryVertex(twoTrackArray,event);
 798   if(!primVertexAOD) return 0x0;
 799
 800   Double_t d0z0[2],covd0z0[3];
 801   postrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 802   d0[0] = d0z0[0];
 803   d0err[0] = TMath::Sqrt(covd0z0[0]);
 804   negtrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 805   d0[1] = d0z0[0];
 806   d0err[1] = TMath::Sqrt(covd0z0[0]);
 807
 808   // create the object AliAODRecoDecayHF2Prong
 809   AliAODRecoDecayHF2Prong *the2Prong = new AliAODRecoDecayHF2Prong(secVert,px,py,pz,d0,d0err,dca);
 810   the2Prong->SetOwnPrimaryVtx(primVertexAOD);
 811   UShort_t id[2]={(UShort_t)postrack->GetID(),(UShort_t)negtrack->GetID()};
 812   the2Prong->SetProngIDs(2,id);
 813
 814
 815   // select D0->Kpi
 816   Int_t checkD0,checkD0bar;
 817   if(fD0toKpi)   okD0          = the2Prong->SelectD0(fD0toKpiCuts,checkD0,checkD0bar);
 818   //if(fDebug && fD0toKpi) printf("   %d\n",(Int_t)okD0);
 819   // select J/psi from B
 820   Int_t checkJPSI;
 821   if(fJPSItoEle) okJPSI        = the2Prong->SelectBtoJPSI(fBtoJPSICuts,checkJPSI);
 822   //if(fDebug && fJPSItoEle) printf("   %d\n",(Int_t)okJPSI);
 823   // select D0->Kpi from Dstar
 824   if(fDstar)     okD0fromDstar = the2Prong->SelectD0(fD0fromDstarCuts,checkD0,checkD0bar);
 825   //if(fDebug && fDstar) printf("   %d\n",(Int_t)okD0fromDstar);
 826
 827   // remove the primary vertex (was used only for selection)
 828   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the2Prong->UnsetOwnPrimaryVtx();
 829
 830   // get PID info from ESD
 831   Double_t esdpid0[5];
 832   postrack->GetESDpid(esdpid0);
 833   Double_t esdpid1[5];
 834   negtrack->GetESDpid(esdpid1);
 835   Double_t esdpid[10];
 836   for(Int_t i=0;i<5;i++) {
 837     esdpid[i]   = esdpid0[i];
 838     esdpid[5+i] = esdpid1[i];
 839   }
 840   the2Prong->SetPID(2,esdpid);
 841
 842   return the2Prong;
 843 }
 844 //----------------------------------------------------------------------------
 845 AliAODRecoDecayHF3Prong* AliAnalysisVertexingHF::Make3Prong(
 846                              TObjArray *threeTrackArray,AliVEvent *event,
 847                              AliAODVertex *secVert,Double_t dispersion,
 848                              AliAODVertex *vertexp1n1,AliAODVertex *vertexp2n1,
 849                              Double_t dcap1n1,Double_t dcap2n1,Double_t dcap1p2,
 850                              Bool_t &ok3Prong) const
 851 {
 852   // Make 3Prong candidates and check if they pass Dplus or Ds or Lambdac
 853   // reconstruction cuts
 854   // E.Bruna, F.Prino
 855
 856
 857   ok3Prong=kFALSE;
 858   if(!secVert) return 0x0;
 859
 860   Double_t px[3],py[3],pz[3],d0[3],d0err[3];
 861   Double_t momentum[3];
 862
 863
 864   AliESDtrack *postrack1 = (AliESDtrack*)threeTrackArray->UncheckedAt(0);
 865   AliESDtrack *negtrack  = (AliESDtrack*)threeTrackArray->UncheckedAt(1);
 866   AliESDtrack *postrack2 = (AliESDtrack*)threeTrackArray->UncheckedAt(2);
 867
 868   postrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
 869   negtrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
 870   postrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
 871   postrack1->GetPxPyPz(momentum);
 872   px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
 873   negtrack->GetPxPyPz(momentum);
 874   px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
 875   postrack2->GetPxPyPz(momentum);
 876   px[2] = momentum[0]; py[2] = momentum[1]; pz[2] = momentum[2];
 877
 878   // invariant mass cut for D+, Ds, Lc
 879   Bool_t okMassCut=kFALSE;
 880   if(!okMassCut && f3Prong) if(SelectInvMass(2,3,px,py,pz)) okMassCut=kTRUE;
 881   if(!okMassCut) {
 882     AliDebug(2," candidate didn't pass mass cut");
 883     return 0x0;
 884   }
 885
 886   // primary vertex to be used by this candidate
 887   AliAODVertex *primVertexAOD  = PrimaryVertex(threeTrackArray,event);
 888   if(!primVertexAOD) return 0x0;
 889
 890   Double_t d0z0[2],covd0z0[3];
 891   postrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 892   d0[0]=d0z0[0];
 893   d0err[0] = TMath::Sqrt(covd0z0[0]);
 894   negtrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 895   d0[1]=d0z0[0];
 896   d0err[1] = TMath::Sqrt(covd0z0[0]);
 897   postrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 898   d0[2]=d0z0[0];
 899   d0err[2] = TMath::Sqrt(covd0z0[0]);
 900
 901
 902   // create the object AliAODRecoDecayHF3Prong
 903   Double_t pos[3]; primVertexAOD->GetXYZ(pos);
 904   Double_t dca[3]={dcap1n1,dcap2n1,dcap1p2};
 905   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]));
 906   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]));
 907   Short_t charge=(Short_t)(postrack1->Charge()*postrack2->Charge()*negtrack->Charge());
 908   AliAODRecoDecayHF3Prong *the3Prong = new AliAODRecoDecayHF3Prong(secVert,px,py,pz,d0,d0err,dca,dispersion,dist12,dist23,charge);
 909   the3Prong->SetOwnPrimaryVtx(primVertexAOD);
 910   UShort_t id[3]={(UShort_t)postrack1->GetID(),(UShort_t)negtrack->GetID(),(UShort_t)postrack2->GetID()};
 911   the3Prong->SetProngIDs(3,id);
 912
 913
 914   // select D+->Kpipi, Ds->KKpi, Lc->pKpi
 915   if(f3Prong) {
 916     ok3Prong = kFALSE;
 917     Int_t ok1,ok2;
 918     if(the3Prong->SelectDplus(fDplusCuts))   ok3Prong = kTRUE;
 919     if(the3Prong->SelectDs(fDsCuts,ok1,ok2)) ok3Prong = kTRUE;
 920     if(the3Prong->SelectLc(fLcCuts,ok1,ok2)) ok3Prong = kTRUE;
 921   }
 922   //if(fDebug) printf("ok3Prong: %d\n",(Int_t)ok3Prong);
 923
 924   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the3Prong->UnsetOwnPrimaryVtx();
 925
 926   // get PID info from ESD
 927   Double_t esdpid0[5];
 928   postrack1->GetESDpid(esdpid0);
 929   Double_t esdpid1[5];
 930   negtrack->GetESDpid(esdpid1);
 931   Double_t esdpid2[5];
 932   postrack2->GetESDpid(esdpid2);
 933
 934   Double_t esdpid[15];
 935   for(Int_t i=0;i<5;i++) {
 936     esdpid[i]    = esdpid0[i];
 937     esdpid[5+i]  = esdpid1[i];
 938     esdpid[10+i] = esdpid2[i];
 939   }
 940   the3Prong->SetPID(3,esdpid);
 941
 942   return the3Prong;
 943 }
 944 //----------------------------------------------------------------------------
 945 AliAODRecoDecayHF4Prong* AliAnalysisVertexingHF::Make4Prong(
 946                              TObjArray *fourTrackArray,AliVEvent *event,
 947                              AliAODVertex *secVert,
 948                              AliAODVertex *vertexp1n1,AliAODVertex *vertexp2n1,
 949                              Double_t dcap1n1,Double_t dcap1n2,Double_t dcap2n1,
 950                              Bool_t &ok4Prong) const
 951 {
 952   // Make 4Prong candidates and check if they pass D0toKpipipi
 953   // reconstruction cuts
 954   // G.E.Bruno, R.Romita
 955
 956   ok4Prong=kFALSE;
 957   if(!secVert) return 0x0;
 958
 959   Double_t px[4],py[4],pz[4],d0[4],d0err[4];//d0z[3];
 960
 961   px[0]=dcap1n1*dcap1n2*dcap2n1; // TO BE CHANGED (done just to removed compilation warning about dca... not used)
 962
 963   AliESDtrack *postrack1 = (AliESDtrack*)fourTrackArray->UncheckedAt(0);
 964   AliESDtrack *negtrack1 = (AliESDtrack*)fourTrackArray->UncheckedAt(1);
 965   AliESDtrack *postrack2 = (AliESDtrack*)fourTrackArray->UncheckedAt(2);
 966   AliESDtrack *negtrack2 = (AliESDtrack*)fourTrackArray->UncheckedAt(3);
 967
 968   postrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
 969   negtrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
 970   postrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
 971   negtrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
 972
 973   Double_t momentum[3];
 974   postrack1->GetPxPyPz(momentum);
 975   px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
 976   negtrack1->GetPxPyPz(momentum);
 977   px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
 978   postrack2->GetPxPyPz(momentum);
 979   px[2] = momentum[0]; py[2] = momentum[1]; pz[2] = momentum[2];
 980   negtrack2->GetPxPyPz(momentum);
 981   px[3] = momentum[0]; py[3] = momentum[1]; pz[3] = momentum[2];
 982
 983   // invariant mass cut for rho or D0 (try to improve coding here..)
 984   //Bool_t okMassCut=kFALSE;
 985   //if(!okMassCut) if(SelectInvMass(2,3,px,py,pz)) okMassCut=kTRUE;
 986   //if(!okMassCut) {
 987   //  if(fDebug) printf(" candidate didn't pass mass cut\n");
 988   //  return 0x0;
 989   //}
 990
 991   // primary vertex to be used by this candidate
 992   AliAODVertex *primVertexAOD  = PrimaryVertex(fourTrackArray,event);
 993   if(!primVertexAOD) return 0x0;
 994
 995   /*
 996     Double_t d0z0[2],covd0z0[3];
 997     postrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 998     negtrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 999     postrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
1000     negtrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
1001   */
1002
1003   // create the object AliAODRecoDecayHF4Prong
1004   Double_t pos[3]; primVertexAOD->GetXYZ(pos);
1005   Double_t dca[6]={0.,0.,0.,0.,0.,0.}; //  modify it
1006   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]));
1007   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]));
1008   Double_t dist14=0.; // to be implemented
1009   Double_t dist34=0.; // to be implemented
1010   Short_t charge=0;
1011   AliAODRecoDecayHF4Prong *the4Prong = new AliAODRecoDecayHF4Prong(secVert,px,py,pz,d0,d0err,dca,dist12,dist23,dist14,dist34,charge);
1012   the4Prong->SetOwnPrimaryVtx(primVertexAOD);
1013   UShort_t id[4]={(UShort_t)postrack1->GetID(),(UShort_t)negtrack1->GetID(),(UShort_t)postrack2->GetID(),(UShort_t)negtrack2->GetID()};
1014   the4Prong->SetProngIDs(4,id);
1015
1016
1017   // use the following two lines once AliAODRecoDecayHF4Prong::SelectD0 is available
1018   // select D0->Kpipipi
1019   //Int_t checkD0,checkD0bar;
1020   // ok4Prong=the4Prong->SelectD0(fD04pCuts,checkD0,checkD0bar);
1021   ok4Prong=kFALSE;  //for the time being ...
1022
1023   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the4Prong->UnsetOwnPrimaryVtx();
1024
1025   // get PID info from ESD
1026   Double_t esdpid0[5];
1027   postrack1->GetESDpid(esdpid0);
1028   Double_t esdpid1[5];
1029   negtrack1->GetESDpid(esdpid1);
1030   Double_t esdpid2[5];
1031   postrack2->GetESDpid(esdpid2);
1032   Double_t esdpid3[5];
1033   negtrack2->GetESDpid(esdpid3);
1034
1035   Double_t esdpid[20];
1036   for(Int_t i=0;i<5;i++) {
1037     esdpid[i]    = esdpid0[i];
1038     esdpid[5+i]  = esdpid1[i];
1039     esdpid[10+i] = esdpid2[i];
1040     esdpid[15+i] = esdpid3[i];
1041   }
1042   the4Prong->SetPID(4,esdpid);
1043
1044   return the4Prong;
1045 }
1046 //-----------------------------------------------------------------------------
1047 AliAODVertex* AliAnalysisVertexingHF::PrimaryVertex(TObjArray *trkArray,
1048                                                     AliVEvent *event) const
1049 {
1050   // Returns primary vertex to be used for this candidate
1051
1052   AliESDVertex *vertexESD = 0;
1053   AliAODVertex *vertexAOD = 0;
1054
1055
1056   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
1057     // primary vertex from the input event
1058
1059     vertexESD = new AliESDVertex(*fV1);
1060
1061   } else {
1062     // primary vertex specific to this candidate
1063
1064     Int_t nTrks = trkArray->GetEntriesFast();
1065     AliVertexerTracks *vertexer = new AliVertexerTracks(event->GetMagneticField());
1066
1067     if(fRecoPrimVtxSkippingTrks) {
1068       // recalculating the vertex
1069
1070       if(strstr(fV1->GetTitle(),"VertexerTracksWithConstraint")) {
1071         Float_t diamondcovxy[3];
1072         event->GetDiamondCovXY(diamondcovxy);
1073         Double_t pos[3]={event->GetDiamondX(),event->GetDiamondY(),0.};
1074         Double_t cov[6]={diamondcovxy[0],diamondcovxy[1],diamondcovxy[2],0.,0.,10.};
1075         AliESDVertex *diamond = new AliESDVertex(pos,cov,1.,1);
1076         vertexer->SetVtxStart(diamond);
1077         delete diamond; diamond=NULL;
1078         if(strstr(fV1->GetTitle(),"VertexerTracksWithConstraintOnlyFitter"))
1079           vertexer->SetOnlyFitter();
1080       }
1081       Int_t skipped[10];
1082       Int_t nTrksToSkip=0,id;
1083       AliExternalTrackParam *t = 0;
1084       for(Int_t i=0; i<nTrks; i++) {
1085         t = (AliExternalTrackParam*)trkArray->UncheckedAt(i);
1086         id = (Int_t)t->GetID();
1087         if(id<0) continue;
1088         skipped[nTrksToSkip++] = id;
1089       }
1090       vertexer->SetSkipTracks(nTrksToSkip,skipped);
1091       vertexESD = (AliESDVertex*)vertexer->FindPrimaryVertex(event);
1092
1093     } else if(fRmTrksFromPrimVtx) {
1094       // removing the prongs tracks
1095
1096       TObjArray rmArray(nTrks);
1097       UShort_t *rmId = new UShort_t[nTrks];
1098       AliESDtrack *esdTrack = 0;
1099       AliESDtrack *t = 0;
1100       for(Int_t i=0; i<nTrks; i++) {
1101         t = (AliESDtrack*)trkArray->UncheckedAt(i);
1102         esdTrack = new AliESDtrack(*t);
1103         rmArray.AddLast(esdTrack);
1104         if(esdTrack->GetID()>=0) {
1105           rmId[i]=(UShort_t)esdTrack->GetID();
1106         } else {
1107           rmId[i]=9999;
1108         }
1109       }
1110       Float_t diamondxy[2]={event->GetDiamondX(),event->GetDiamondY()};
1111       vertexESD = vertexer->RemoveTracksFromVertex(fV1,&rmArray,rmId,diamondxy);
1112       delete [] rmId; rmId=NULL;
1113       rmArray.Delete();
1114
1115     }
1116
1117     if(!vertexESD) return vertexAOD;
1118     if(vertexESD->GetNContributors()<=0) {
1119       AliDebug(2,"vertexing failed");
1120       delete vertexESD; vertexESD=NULL;
1121       return vertexAOD;
1122     }
1123
1124     delete vertexer; vertexer=NULL;
1125
1126   }
1127
1128   // convert to AliAODVertex
1129   Double_t pos[3],cov[6],chi2perNDF;
1130   vertexESD->GetXYZ(pos); // position
1131   vertexESD->GetCovMatrix(cov); //covariance matrix
1132   chi2perNDF = vertexESD->GetChi2toNDF();
1133   delete vertexESD; vertexESD=NULL;
1134
1135   vertexAOD = new AliAODVertex(pos,cov,chi2perNDF);
1136
1137   return vertexAOD;
1138 }
1139 //-----------------------------------------------------------------------------
1140 void AliAnalysisVertexingHF::PrintStatus() const {
1141   // Print parameters being used
1142
1143   //printf("Preselections:\n");
1144   //   fTrackFilter->Dump();
1145   if(fSecVtxWithKF) {
1146     printf("Secondary vertex with Kalman filter package (AliKFParticle)\n");
1147   } else {
1148     printf("Secondary vertex with AliVertexerTracks\n");
1149   }
1150   if(fRecoPrimVtxSkippingTrks) printf("RecoPrimVtxSkippingTrks\n");
1151   if(fRmTrksFromPrimVtx) printf("RmTrksFromPrimVtx\n");
1152   if(fD0toKpi) {
1153     printf("Reconstruct D0->Kpi candidates with cuts:\n");
1154     printf("    |M-MD0| [GeV]    < %f\n",fD0toKpiCuts[0]);
1155     printf("    dca    [cm]  < %f\n",fD0toKpiCuts[1]);
1156     printf("    cosThetaStar     < %f\n",fD0toKpiCuts[2]);
1157     printf("    pTK     [GeV/c]    > %f\n",fD0toKpiCuts[3]);
1158     printf("    pTpi    [GeV/c]    > %f\n",fD0toKpiCuts[4]);
1159     printf("    |d0K|  [cm]  < %f\n",fD0toKpiCuts[5]);
1160     printf("    |d0pi| [cm]  < %f\n",fD0toKpiCuts[6]);
1161     printf("    d0d0  [cm^2] < %f\n",fD0toKpiCuts[7]);
1162     printf("    cosThetaPoint    > %f\n",fD0toKpiCuts[8]);
1163   }
1164   if(fDstar) {
1165     printf("    |M-MD*| [GeV]    < %f\n",fDstarCuts[0]);
1166     printf("    |M_Kpipi-M_Kpi-(MD*-MD0)| [GeV]  < %f\n",fDstarCuts[1]);
1167     printf("    pTpisoft [GeV/c]    > %f\n",fDstarCuts[2]);
1168     printf("    pTpisoft [GeV/c]    < %f\n",fDstarCuts[3]);
1169     printf("    Theta(pisoft,D0plane) < %f\n",fDstarCuts[4]);
1170     printf("Reconstruct D*->D0pi candidates with cuts:\n");
1171     printf("   D0 from D* cuts:\n");
1172     printf("    |M-MD0| [GeV]    < %f\n",fD0fromDstarCuts[0]);
1173     printf("    dca    [cm]  < %f\n",fD0fromDstarCuts[1]);
1174     printf("    cosThetaStar     < %f\n",fD0fromDstarCuts[2]);
1175     printf("    pTK     [GeV/c]    > %f\n",fD0fromDstarCuts[3]);
1176     printf("    pTpi    [GeV/c]    > %f\n",fD0fromDstarCuts[4]);
1177     printf("    |d0K|  [cm]  < %f\n",fD0fromDstarCuts[5]);
1178     printf("    |d0pi| [cm]  < %f\n",fD0fromDstarCuts[6]);
1179     printf("    d0d0  [cm^2] < %f\n",fD0fromDstarCuts[7]);
1180     printf("    cosThetaPoint    > %f\n",fD0fromDstarCuts[8]);
1181   }
1182   if(fJPSItoEle) {
1183     printf("Reconstruct J/psi from B candidates with cuts:\n");
1184     printf("    |M-MJPSI| [GeV]    < %f\n",fBtoJPSICuts[0]);
1185     printf("    dca    [cm]  < %f\n",fBtoJPSICuts[1]);
1186     printf("    cosThetaStar     < %f\n",fBtoJPSICuts[2]);
1187     printf("    pTP     [GeV/c]    > %f\n",fBtoJPSICuts[3]);
1188     printf("    pTN    [GeV/c]    > %f\n",fBtoJPSICuts[4]);
1189     printf("    |d0P|  [cm]  < %f\n",fBtoJPSICuts[5]);
1190     printf("    |d0N| [cm]  < %f\n",fBtoJPSICuts[6]);
1191     printf("    d0d0  [cm^2] < %f\n",fBtoJPSICuts[7]);
1192     printf("    cosThetaPoint    > %f\n",fBtoJPSICuts[8]);
1193   }
1194   if(f3Prong) {
1195     printf("Reconstruct 3 prong candidates.\n");
1196     printf("  D+->Kpipi cuts:\n");
1197     printf("    |M-MD+| [GeV]    < %f\n",fDplusCuts[0]);
1198     printf("    pTK     [GeV/c]    > %f\n",fDplusCuts[1]);
1199     printf("    pTPi    [GeV/c]    > %f\n",fDplusCuts[2]);
1200     printf("    |d0K|  [cm]  > %f\n",fDplusCuts[3]);
1201     printf("    |d0Pi| [cm]  > %f\n",fDplusCuts[4]);
1202     printf("    dist12    [cm]  < %f\n",fDplusCuts[5]);
1203     printf("    sigmavert [cm]   < %f\n",fDplusCuts[6]);
1204     printf("    dist prim-sec [cm] > %f\n",fDplusCuts[7]);
1205     printf("    pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fDplusCuts[8]);
1206     printf("    cosThetaPoint    > %f\n",fDplusCuts[9]);
1207     printf("    Sum d0^2 [cm^2]  > %f\n",fDplusCuts[10]);
1208     printf("    dca cut [cm]  < %f\n",fDplusCuts[11]);
1209     printf("  Ds->KKpi cuts:\n");
1210     printf("    |M-MDs| [GeV]    < %f\n",fDsCuts[0]);
1211     printf("    pTK     [GeV/c]    > %f\n",fDsCuts[1]);
1212     printf("    pTPi    [GeV/c]    > %f\n",fDsCuts[2]);
1213     printf("    |d0K|  [cm]  > %f\n",fDsCuts[3]);
1214     printf("    |d0Pi| [cm]  > %f\n",fDsCuts[4]);
1215     printf("    dist12    [cm]  < %f\n",fDsCuts[5]);
1216     printf("    sigmavert [cm]   < %f\n",fDsCuts[6]);
1217     printf("    dist prim-sec [cm] > %f\n",fDsCuts[7]);
1218     printf("    pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fDsCuts[8]);
1219     printf("    cosThetaPoint    > %f\n",fDsCuts[9]);
1220     printf("    Sum d0^2 [cm^2]  > %f\n",fDsCuts[10]);
1221     printf("    dca cut [cm]  < %f\n",fDsCuts[11]);
1222     printf("    Inv. Mass  phi/K0* [GeV]  < %f\n",fDsCuts[12]);
1223     printf("  Lc->pKpi cuts:\n");
1224     printf("    |M-MLc| [GeV]    < %f\n",fLcCuts[0]);
1225     printf("    pTP     [GeV/c]    > %f\n",fLcCuts[1]);
1226     printf("    pTPi and pTK [GeV/c]    > %f\n",fLcCuts[2]);
1227     printf("    |d0P|  [cm]  > %f\n",fLcCuts[3]);
1228     printf("    |d0Pi| and |d0K| [cm]  > %f\n",fLcCuts[4]);
1229     printf("    dist12    [cm]  < %f\n",fLcCuts[5]);
1230     printf("    sigmavert [cm]   < %f\n",fLcCuts[6]);
1231     printf("    dist prim-sec [cm] > %f\n",fLcCuts[7]);
1232     printf("    pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fLcCuts[8]);
1233     printf("    cosThetaPoint    > %f\n",fLcCuts[9]);
1234     printf("    Sum d0^2 [cm^2]  > %f\n",fLcCuts[10]);
1235     printf("    dca cut [cm]  < %f\n",fLcCuts[11]);
1236   }
1237
1238   return;
1239 }
1240 //-----------------------------------------------------------------------------
1241 AliAODVertex* AliAnalysisVertexingHF::ReconstructSecondaryVertex(TObjArray *trkArray,
1242                                                                  Double_t &dispersion,Bool_t useTRefArray) const
1243 {
1244   // Secondary vertex reconstruction with AliVertexerTracks or AliKFParticle
1245
1246   AliESDVertex *vertexESD = 0;
1247   AliAODVertex *vertexAOD = 0;
1248
1249   if(!fSecVtxWithKF) { // AliVertexerTracks
1250
1251     AliVertexerTracks *vertexer = new AliVertexerTracks(fBzkG);
1252     vertexer->SetVtxStart(fV1);
1253     vertexESD = (AliESDVertex*)vertexer->VertexForSelectedESDTracks(trkArray);
1254     delete vertexer; vertexer=NULL;
1255
1256     if(!vertexESD) return vertexAOD;
1257
1258     if(vertexESD->GetNContributors()!=trkArray->GetEntriesFast()) {
1259       AliDebug(2,"vertexing failed");
1260       delete vertexESD; vertexESD=NULL;
1261       return vertexAOD;
1262     }
1263
1264   } else { // Kalman Filter vertexer (AliKFParticle)
1265
1266     AliKFParticle::SetField(fBzkG);
1267
1268     AliKFVertex vertexKF;
1269
1270     Int_t nTrks = trkArray->GetEntriesFast();
1271     for(Int_t i=0; i<nTrks; i++) {
1272       AliESDtrack *esdTrack = (AliESDtrack*)trkArray->At(i);
1273       AliKFParticle daughterKF(*esdTrack,211);
1274       vertexKF.AddDaughter(daughterKF);
1275     }
1276     vertexESD = new AliESDVertex(vertexKF.Parameters(),
1277                                  vertexKF.CovarianceMatrix(),
1278                                  vertexKF.GetChi2(),
1279                                  vertexKF.GetNContributors());
1280
1281   }
1282
1283   // convert to AliAODVertex
1284   Double_t pos[3],cov[6],chi2perNDF;
1285   vertexESD->GetXYZ(pos); // position
1286   vertexESD->GetCovMatrix(cov); //covariance matrix
1287   chi2perNDF = vertexESD->GetChi2toNDF();
1288   dispersion = vertexESD->GetDispersion();
1289   delete vertexESD; vertexESD=NULL;
1290
1291   Int_t nprongs= (useTRefArray ? 0 : trkArray->GetEntriesFast());
1292   vertexAOD = new AliAODVertex(pos,cov,chi2perNDF,0x0,-1,AliAODVertex::kUndef,nprongs);
1293
1294   return vertexAOD;
1295 }
1296 //-----------------------------------------------------------------------------
1297 Bool_t AliAnalysisVertexingHF::SelectInvMass(Int_t decay,
1298                                              Int_t nprongs,
1299                                              Double_t *px,
1300                                              Double_t *py,
1301                                              Double_t *pz) const {
1302   // Check invariant mass cut
1303
1304   Short_t dummycharge=0;
1305   Double_t *dummyd0 = new Double_t[nprongs];
1306   for(Int_t ip=0;ip<nprongs;ip++) dummyd0[ip]=0.;
1307   AliAODRecoDecay *rd = new AliAODRecoDecay(0x0,nprongs,dummycharge,px,py,pz,dummyd0);
1308   delete [] dummyd0;
1309
1310   UInt_t pdg2[2],pdg3[3];
1311   Double_t mPDG,minv;
1312
1313   Bool_t retval=kFALSE;
1314   switch (decay)
1315     {
1316     case 0:                  // D0->Kpi
1317       pdg2[0]=211; pdg2[1]=321;
1318       mPDG=TDatabasePDG::Instance()->GetParticle(421)->Mass();
1319       minv = rd->InvMass(nprongs,pdg2);
1320       if(TMath::Abs(minv-mPDG)<fD0toKpiCuts[0]) retval=kTRUE;
1321       pdg2[0]=321; pdg2[1]=211;
1322       minv = rd->InvMass(nprongs,pdg2);
1323       if(TMath::Abs(minv-mPDG)<fD0toKpiCuts[0]) retval=kTRUE;
1324       break;
1325     case 1:                  // JPSI->ee
1326       pdg2[0]=11; pdg2[1]=11;
1327       mPDG=TDatabasePDG::Instance()->GetParticle(443)->Mass();
1328       minv = rd->InvMass(nprongs,pdg2);
1329       if(TMath::Abs(minv-mPDG)<fBtoJPSICuts[0]) retval=kTRUE;
1330       break;
1331     case 2:                  // D+->Kpipi
1332       pdg3[0]=211; pdg3[1]=321; pdg3[2]=211;
1333       mPDG=TDatabasePDG::Instance()->GetParticle(411)->Mass();
1334       minv = rd->InvMass(nprongs,pdg3);
1335       if(TMath::Abs(minv-mPDG)<fDplusCuts[0]) retval=kTRUE;
1336                             // Ds+->KKpi
1337       pdg3[0]=321; pdg3[1]=321; pdg3[2]=211;
1338       mPDG=TDatabasePDG::Instance()->GetParticle(431)->Mass();
1339       minv = rd->InvMass(nprongs,pdg3);
1340       if(TMath::Abs(minv-mPDG)<fDsCuts[0]) retval=kTRUE;
1341       pdg3[0]=211; pdg3[1]=321; pdg3[2]=321;
1342       minv = rd->InvMass(nprongs,pdg3);
1343       if(TMath::Abs(minv-mPDG)<fDsCuts[0]) retval=kTRUE;
1344                             // Lc->pKpi
1345       pdg3[0]=2212; pdg3[1]=321; pdg3[2]=211;
1346       mPDG=TDatabasePDG::Instance()->GetParticle(4122)->Mass();
1347       minv = rd->InvMass(nprongs,pdg3);
1348       if(TMath::Abs(minv-mPDG)<fLcCuts[0]) retval=kTRUE;
1349       pdg3[0]=211; pdg3[1]=321; pdg3[2]=2212;
1350       minv = rd->InvMass(nprongs,pdg3);
1351       if(TMath::Abs(minv-mPDG)<fLcCuts[0]) retval=kTRUE;
1352       break;
1353     case 3:                  // D*->D0pi
1354       pdg2[0]=421; pdg2[1]=211;
1355       mPDG=TDatabasePDG::Instance()->GetParticle(413)->Mass();
1356       minv = rd->InvMass(nprongs,pdg2);
1357       if(TMath::Abs(minv-mPDG)<fDstarCuts[0]) retval=kTRUE;
1358       break;
1359     default:
1360       printf("SelectInvMass(): wrong decay selection\n");
1361       break;
1362     }
1363
1364   delete rd;
1365
1366   return retval;
1367 }
1368 //-----------------------------------------------------------------------------
1369 void AliAnalysisVertexingHF::SelectTracksAndCopyVertex(AliVEvent *event,
1370                                    TObjArray &seleTrksArray,Int_t &nSeleTrks,
1371                                                        UChar_t *seleFlags)
1372 {
1373   // Apply single-track preselection.
1374   // Fill a TObjArray with selected tracks (for displaced vertices or
1375   // soft pion from D*). Selection flag stored in seleFlags.
1376   // Create the AliESDVertex object (convert from AliAODVertex if necessary)
1377   // In case of AOD input, also fill fAODMap for track index<->ID
1378
1379   const AliVVertex *vprimary = event->GetPrimaryVertex();
1380
1381   if(fV1) { delete fV1; fV1=NULL; }
1382   if(fAODMap) { delete [] fAODMap; fAODMap=NULL; }
1383
1384   Int_t nindices=0;
1385   UShort_t *indices = 0;
1386   Double_t pos[3],cov[6];
1387
1388   if(!fInputAOD) { // ESD
1389     fV1 = new AliESDVertex(*((AliESDVertex*)vprimary));
1390   } else {         // AOD
1391     vprimary->GetXYZ(pos);
1392     vprimary->GetCovarianceMatrix(cov);
1393     fV1 = new AliESDVertex(pos,cov,100.,100,vprimary->GetName());
1394     indices = new UShort_t[event->GetNumberOfTracks()];
1395     fAODMap = new Int_t[100000];
1396   }
1397
1398
1399   Int_t entries = (Int_t)event->GetNumberOfTracks();
1400   Bool_t okDisplaced=kFALSE,okSoftPi=kFALSE;
1401   nSeleTrks=0;
1402
1403   // transfer ITS tracks from event to arrays
1404   for(Int_t i=0; i<entries; i++) {
1405     AliVTrack *track = (AliVTrack*)event->GetTrack(i);
1406
1407     if(fInputAOD) {
1408       AliAODTrack *aodt = (AliAODTrack*)track;
1409       if(aodt->GetUsedForPrimVtxFit()) {
1410         indices[nindices]=aodt->GetID(); nindices++;
1411       }
1412       fAODMap[(Int_t)aodt->GetID()] = i;
1413     }
1414
1415     AliESDtrack *esdt = 0;
1416     if(!fInputAOD) {
1417       esdt = (AliESDtrack*)track;
1418     } else {
1419       esdt = new AliESDtrack(track);
1420     }
1421
1422     // single track selection
1423     okDisplaced=kFALSE; okSoftPi=kFALSE;
1424     if(SingleTrkCuts(esdt,okDisplaced,okSoftPi)) {
1425       seleTrksArray.AddLast(esdt);
1426       seleFlags[nSeleTrks]=0;
1427       if(okDisplaced) SETBIT(seleFlags[nSeleTrks],kBitDispl);
1428       if(okSoftPi)    SETBIT(seleFlags[nSeleTrks],kBitSoftPi);
1429       nSeleTrks++;
1430     } else {
1431       if(fInputAOD) delete esdt;
1432       esdt = NULL;
1433       continue;
1434     }
1435
1436   } // end loop on tracks
1437
1438   // primary vertex from AOD
1439   if(fInputAOD) {
1440     delete fV1; fV1=NULL;
1441     vprimary->GetXYZ(pos);
1442     vprimary->GetCovarianceMatrix(cov);
1443     Double_t chi2toNDF = vprimary->GetChi2perNDF();
1444     Int_t ncontr=nindices;
1445     if(!strcmp(vprimary->GetTitle(),"VertexerTracksWithContraint")) ncontr += 1;
1446     Double_t chi2=chi2toNDF*(2.*(Double_t)ncontr-3.);
1447     fV1 = new AliESDVertex(pos,cov,chi2,ncontr,vprimary->GetName());
1448     fV1->SetTitle(vprimary->GetTitle());
1449     fV1->SetIndices(nindices,indices);
1450   }
1451   if(indices) { delete [] indices; indices=NULL; }
1452
1453
1454   return;
1455 }
1456 //-----------------------------------------------------------------------------
1457 void AliAnalysisVertexingHF::SetD0toKpiCuts(Double_t cut0,Double_t cut1,
1458                                    Double_t cut2,Double_t cut3,Double_t cut4,
1459                                    Double_t cut5,Double_t cut6,
1460                                    Double_t cut7,Double_t cut8)
1461 {
1462   // Set the cuts for D0 selection
1463   fD0toKpiCuts[0] = cut0;
1464   fD0toKpiCuts[1] = cut1;
1465   fD0toKpiCuts[2] = cut2;
1466   fD0toKpiCuts[3] = cut3;
1467   fD0toKpiCuts[4] = cut4;
1468   fD0toKpiCuts[5] = cut5;
1469   fD0toKpiCuts[6] = cut6;
1470   fD0toKpiCuts[7] = cut7;
1471   fD0toKpiCuts[8] = cut8;
1472
1473   return;
1474 }
1475 //-----------------------------------------------------------------------------
1476 void AliAnalysisVertexingHF::SetD0toKpiCuts(const Double_t cuts[9])
1477 {
1478   // Set the cuts for D0 selection
1479
1480   for(Int_t i=0; i<9; i++) fD0toKpiCuts[i] = cuts[i];
1481
1482   return;
1483 }
1484 //-----------------------------------------------------------------------------
1485 void AliAnalysisVertexingHF::SetD0fromDstarCuts(Double_t cut0,Double_t cut1,
1486                                    Double_t cut2,Double_t cut3,Double_t cut4,
1487                                    Double_t cut5,Double_t cut6,
1488                                    Double_t cut7,Double_t cut8)
1489 {
1490   // Set the cuts for D0 from D* selection
1491   fD0fromDstarCuts[0] = cut0;
1492   fD0fromDstarCuts[1] = cut1;
1493   fD0fromDstarCuts[2] = cut2;
1494   fD0fromDstarCuts[3] = cut3;
1495   fD0fromDstarCuts[4] = cut4;
1496   fD0fromDstarCuts[5] = cut5;
1497   fD0fromDstarCuts[6] = cut6;
1498   fD0fromDstarCuts[7] = cut7;
1499   fD0fromDstarCuts[8] = cut8;
1500
1501   return;
1502 }
1503 //-----------------------------------------------------------------------------
1504 void AliAnalysisVertexingHF::SetD0fromDstarCuts(const Double_t cuts[9])
1505 {
1506   // Set the cuts for D0 from D* selection
1507
1508   for(Int_t i=0; i<9; i++) fD0fromDstarCuts[i] = cuts[i];
1509
1510   return;
1511 }
1512 //-----------------------------------------------------------------------------
1513 void AliAnalysisVertexingHF::SetDstarCuts(Double_t cut0,Double_t cut1,
1514                                           Double_t cut2,Double_t cut3,
1515                                           Double_t cut4)
1516 {
1517   // Set the cuts for D* selection
1518   fDstarCuts[0] = cut0;
1519   fDstarCuts[1] = cut1;
1520   fDstarCuts[2] = cut2;
1521   fDstarCuts[3] = cut3;
1522   fDstarCuts[4] = cut4;
1523
1524   return;
1525 }
1526 //-----------------------------------------------------------------------------
1527 void AliAnalysisVertexingHF::SetDstarCuts(const Double_t cuts[5])
1528 {
1529   // Set the cuts for D* selection
1530
1531   for(Int_t i=0; i<5; i++) fDstarCuts[i] = cuts[i];
1532
1533   return;
1534 }
1535 //-----------------------------------------------------------------------------
1536 void AliAnalysisVertexingHF::SetBtoJPSICuts(Double_t cut0,Double_t cut1,
1537                                    Double_t cut2,Double_t cut3,Double_t cut4,
1538                                    Double_t cut5,Double_t cut6,
1539                                    Double_t cut7,Double_t cut8)
1540 {
1541   // Set the cuts for J/psi from B selection
1542   fBtoJPSICuts[0] = cut0;
1543   fBtoJPSICuts[1] = cut1;
1544   fBtoJPSICuts[2] = cut2;
1545   fBtoJPSICuts[3] = cut3;
1546   fBtoJPSICuts[4] = cut4;
1547   fBtoJPSICuts[5] = cut5;
1548   fBtoJPSICuts[6] = cut6;
1549   fBtoJPSICuts[7] = cut7;
1550   fBtoJPSICuts[8] = cut8;
1551
1552   return;
1553 }
1554 //-----------------------------------------------------------------------------
1555 void AliAnalysisVertexingHF::SetBtoJPSICuts(const Double_t cuts[9])
1556 {
1557   // Set the cuts for J/psi from B selection
1558
1559   for(Int_t i=0; i<9; i++) fBtoJPSICuts[i] = cuts[i];
1560
1561   return;
1562 }
1563 //-----------------------------------------------------------------------------
1564 void AliAnalysisVertexingHF::SetDplusCuts(Double_t cut0,Double_t cut1,
1565                                    Double_t cut2,Double_t cut3,Double_t cut4,
1566                                    Double_t cut5,Double_t cut6,
1567                                    Double_t cut7,Double_t cut8,
1568                                    Double_t cut9,Double_t cut10,Double_t cut11)
1569 {
1570   // Set the cuts for Dplus->Kpipi selection
1571   fDplusCuts[0] = cut0;
1572   fDplusCuts[1] = cut1;
1573   fDplusCuts[2] = cut2;
1574   fDplusCuts[3] = cut3;
1575   fDplusCuts[4] = cut4;
1576   fDplusCuts[5] = cut5;
1577   fDplusCuts[6] = cut6;
1578   fDplusCuts[7] = cut7;
1579   fDplusCuts[8] = cut8;
1580   fDplusCuts[9] = cut9;
1581   fDplusCuts[10] = cut10;
1582   fDplusCuts[11] = cut11;
1583
1584   return;
1585 }
1586 //-----------------------------------------------------------------------------
1587 void AliAnalysisVertexingHF::SetDplusCuts(const Double_t cuts[12])
1588 {
1589   // Set the cuts for Dplus->Kpipi selection
1590
1591   for(Int_t i=0; i<12; i++) fDplusCuts[i] = cuts[i];
1592
1593   return;
1594 }
1595 //-----------------------------------------------------------------------------
1596 void AliAnalysisVertexingHF::SetDsCuts(Double_t cut0,Double_t cut1,
1597                                    Double_t cut2,Double_t cut3,Double_t cut4,
1598                                    Double_t cut5,Double_t cut6,
1599                                    Double_t cut7,Double_t cut8,
1600                                    Double_t cut9,Double_t cut10,
1601                                    Double_t cut11,Double_t cut12)
1602 {
1603   // Set the cuts for Ds->KKpi selection
1604   fDsCuts[0] = cut0;
1605   fDsCuts[1] = cut1;
1606   fDsCuts[2] = cut2;
1607   fDsCuts[3] = cut3;
1608   fDsCuts[4] = cut4;
1609   fDsCuts[5] = cut5;
1610   fDsCuts[6] = cut6;
1611   fDsCuts[7] = cut7;
1612   fDsCuts[8] = cut8;
1613   fDsCuts[9] = cut9;
1614   fDsCuts[10] = cut10;
1615   fDsCuts[11] = cut11;
1616   fDsCuts[12] = cut12;
1617
1618   return;
1619 }
1620 //-----------------------------------------------------------------------------
1621 void AliAnalysisVertexingHF::SetDsCuts(const Double_t cuts[13])
1622 {
1623   // Set the cuts for Ds->KKpi selection
1624
1625   for(Int_t i=0; i<13; i++) fDsCuts[i] = cuts[i];
1626
1627   return;
1628 }
1629 //-----------------------------------------------------------------------------
1630 void AliAnalysisVertexingHF::SetLcCuts(Double_t cut0,Double_t cut1,
1631                                    Double_t cut2,Double_t cut3,Double_t cut4,
1632                                    Double_t cut5,Double_t cut6,
1633                                    Double_t cut7,Double_t cut8,
1634                                    Double_t cut9,Double_t cut10,Double_t cut11)
1635 {
1636   // Set the cuts for Lc->pKpi selection
1637   fLcCuts[0] = cut0;
1638   fLcCuts[1] = cut1;
1639   fLcCuts[2] = cut2;
1640   fLcCuts[3] = cut3;
1641   fLcCuts[4] = cut4;
1642   fLcCuts[5] = cut5;
1643   fLcCuts[6] = cut6;
1644   fLcCuts[7] = cut7;
1645   fLcCuts[8] = cut8;
1646   fLcCuts[9] = cut9;
1647   fLcCuts[10] = cut10;
1648   fLcCuts[11] = cut11;
1649
1650   return;
1651 }
1652 //-----------------------------------------------------------------------------
1653 void AliAnalysisVertexingHF::SetLcCuts(const Double_t cuts[12])
1654 {
1655   // Set the cuts for Lc->pKpi selection
1656
1657   for(Int_t i=0; i<12; i++) fLcCuts[i] = cuts[i];
1658
1659   return;
1660 }
1661 //-----------------------------------------------------------------------------
1662 Bool_t AliAnalysisVertexingHF::SingleTrkCuts(AliESDtrack *trk,
1663                                              Bool_t &okDisplaced,Bool_t &okSoftPi) const
1664 {
1665   // Check if track passes some kinematical cuts
1666
1667   // this is needed to store the impact parameters
1668   trk->RelateToVertex(fV1,fBzkG,kVeryBig);
1669
1670   UInt_t selectInfo;
1671   //
1672   // Track selection, displaced tracks
1673   selectInfo = 0;
1674   if(fTrackFilter) {
1675     selectInfo = fTrackFilter->IsSelected(trk);
1676   }
1677   if(selectInfo) okDisplaced=kTRUE;
1678   // Track selection, soft pions
1679   selectInfo = 0;
1680   if(fDstar && fTrackFilterSoftPi) {
1681     selectInfo = fTrackFilterSoftPi->IsSelected(trk);
1682   }
1683   if(selectInfo) okSoftPi=kTRUE;
1684
1685   if(okDisplaced || okSoftPi) return kTRUE;
1686
1687   return kFALSE;
1688 }
1689 //-----------------------------------------------------------------------------