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