PWG3/vertexingHF/AliAnalysisVertexingHF.cxx

   1 /**************************************************************************
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   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
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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 //  Origin: E.Bruna, G.E.Bruno, A.Dainese, F.Prino, R.Romita, X.M.Zhang
  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 "AliExternalTrackParam.h"
  38 //#include "AliNeutralTrackParam.h"
  39 #include "AliESDtrack.h"
  40 #include "AliESDtrackCuts.h"
  41 #include "AliAODEvent.h"
  42 #include "AliAODRecoDecay.h"
  43 #include "AliAODRecoDecayHF.h"
  44 #include "AliAODRecoDecayHF2Prong.h"
  45 #include "AliAODRecoDecayHF3Prong.h"
  46 #include "AliAODRecoDecayHF4Prong.h"
  47 #include "AliAODRecoCascadeHF.h"
  48 #include "AliAnalysisFilter.h"
  49 #include "AliAnalysisVertexingHF.h"
  50
  51 ClassImp(AliAnalysisVertexingHF)
  52
  53 //----------------------------------------------------------------------------
  54 AliAnalysisVertexingHF::AliAnalysisVertexingHF():
  55 fInputAOD(kFALSE),
  56 fAODMap(0),
  57 fBzkG(0.),
  58 fSecVtxWithKF(kFALSE),
  59 fRecoPrimVtxSkippingTrks(kFALSE),
  60 fRmTrksFromPrimVtx(kFALSE),
  61 fV1(0x0),
  62 fD0toKpi(kTRUE),
  63 fJPSItoEle(kTRUE),
  64 f3Prong(kTRUE),
  65 f4Prong(kTRUE),
  66 fDstar(kTRUE),
  67 fTrackFilter(0x0),
  68 fTrackFilterSoftPi(0x0)
  69 {
  70   // Default constructor
  71
  72   SetD0toKpiCuts();
  73   SetBtoJPSICuts();
  74   SetDplusCuts();
  75   SetDsCuts();
  76   SetLcCuts();
  77   SetDstarCuts();
  78
  79 }
  80 //--------------------------------------------------------------------------
  81 AliAnalysisVertexingHF::AliAnalysisVertexingHF(const AliAnalysisVertexingHF &source) :
  82 TNamed(source),
  83 fInputAOD(source.fInputAOD),
  84 fAODMap(source.fAODMap),
  85 fBzkG(source.fBzkG),
  86 fSecVtxWithKF(source.fSecVtxWithKF),
  87 fRecoPrimVtxSkippingTrks(source.fRecoPrimVtxSkippingTrks),
  88 fRmTrksFromPrimVtx(source.fRmTrksFromPrimVtx),
  89 fV1(source.fV1),
  90 fD0toKpi(source.fD0toKpi),
  91 fJPSItoEle(source.fJPSItoEle),
  92 f3Prong(source.f3Prong),
  93 f4Prong(source.f4Prong),
  94 fDstar(source.fDstar),
  95 fTrackFilter(source.fTrackFilter),
  96 fTrackFilterSoftPi(source.fTrackFilterSoftPi)
  97 {
  98   //
  99   // Copy constructor
 100   //
 101   for(Int_t i=0; i<9; i++)  fD0toKpiCuts[i]=source.fD0toKpiCuts[i];
 102   for(Int_t i=0; i<9; i++)  fBtoJPSICuts[i]=source.fBtoJPSICuts[i];
 103   for(Int_t i=0; i<12; i++) fDplusCuts[i]=source.fDplusCuts[i];
 104   for(Int_t i=0; i<13; i++) fDsCuts[i]=source.fDsCuts[i];
 105   for(Int_t i=0; i<12; i++) fLcCuts[i]=source.fLcCuts[i];
 106   for(Int_t i=0; i<5; i++)  fDstarCuts[i]=source.fDstarCuts[i];
 107 }
 108 //--------------------------------------------------------------------------
 109 AliAnalysisVertexingHF &AliAnalysisVertexingHF::operator=(const AliAnalysisVertexingHF &source)
 110 {
 111   //
 112   // assignment operator
 113   //
 114   if(&source == this) return *this;
 115   fInputAOD = source.fInputAOD;
 116   fBzkG = source.fBzkG;
 117   fSecVtxWithKF = source.fSecVtxWithKF;
 118   fRecoPrimVtxSkippingTrks = source.fRecoPrimVtxSkippingTrks;
 119   fRmTrksFromPrimVtx = source.fRmTrksFromPrimVtx;
 120   fV1 = source.fV1;
 121   fD0toKpi = source.fD0toKpi;
 122   fJPSItoEle = source.fJPSItoEle;
 123   f3Prong = source.f3Prong;
 124   f4Prong = source.f4Prong;
 125   fDstar = source.fDstar;
 126   fTrackFilter = source.fTrackFilter;
 127   fTrackFilterSoftPi = source.fTrackFilterSoftPi;
 128
 129   for(Int_t i=0; i<9; i++)  fD0toKpiCuts[i]=source.fD0toKpiCuts[i];
 130   for(Int_t i=0; i<9; i++)  fBtoJPSICuts[i]=source.fBtoJPSICuts[i];
 131   for(Int_t i=0; i<12; i++) fDplusCuts[i]=source.fDplusCuts[i];
 132   for(Int_t i=0; i<13; i++) fDsCuts[i]=source.fDsCuts[i];
 133   for(Int_t i=0; i<12; i++) fLcCuts[i]=source.fLcCuts[i];
 134   for(Int_t i=0; i<5; i++)  fDstarCuts[i]=source.fDstarCuts[i];
 135
 136   return *this;
 137 }
 138 //----------------------------------------------------------------------------
 139 AliAnalysisVertexingHF::~AliAnalysisVertexingHF() {
 140   // Destructor
 141   if(fV1) { delete fV1; fV1=0; }
 142   if(fTrackFilter) { delete fTrackFilter; fTrackFilter=0; }
 143   if(fTrackFilterSoftPi) { delete fTrackFilterSoftPi; fTrackFilterSoftPi=0; }
 144 }
 145 //----------------------------------------------------------------------------
 146 void AliAnalysisVertexingHF::FindCandidates(AliVEvent *event,
 147                                             TClonesArray *aodVerticesHFTClArr,
 148                                             TClonesArray *aodD0toKpiTClArr,
 149                                             TClonesArray *aodJPSItoEleTClArr,
 150                                             TClonesArray *aodCharm3ProngTClArr,
 151                                             TClonesArray *aodCharm4ProngTClArr,
 152                                             TClonesArray *aodDstarTClArr)
 153 {
 154   // Find heavy-flavour vertex candidates
 155   // Input:  ESD or AOD
 156   // Output: AOD (additional branches added)
 157
 158
 159   TString evtype = event->IsA()->GetName();
 160   fInputAOD = ((evtype=="AliAODEvent") ? kTRUE : kFALSE);
 161
 162   if(!aodVerticesHFTClArr) {
 163     printf("ERROR: no aodVerticesHFTClArr");
 164     return;
 165   }
 166   if((fD0toKpi || fDstar) && !aodD0toKpiTClArr) {
 167     printf("ERROR: no aodD0toKpiTClArr");
 168     return;
 169   }
 170   if(fJPSItoEle && !aodJPSItoEleTClArr) {
 171     printf("ERROR: no aodJPSItoEleTClArr");
 172     return;
 173   }
 174   if(f3Prong && !aodCharm3ProngTClArr) {
 175     printf("ERROR: no aodCharm3ProngTClArr");
 176     return;
 177   }
 178   if(f4Prong && !aodCharm4ProngTClArr) {
 179     printf("ERROR: no aodCharm4ProngTClArr");
 180     return;
 181   }
 182   if(fDstar && !aodDstarTClArr) {
 183     printf("ERROR: no aodDstarTClArr");
 184     return;
 185   }
 186
 187   // delete candidates from previous event and create references
 188   Int_t iVerticesHF=0,iD0toKpi=0,iJPSItoEle=0,i3Prong=0,i4Prong=0,iDstar=0;
 189   aodVerticesHFTClArr->Delete();
 190   iVerticesHF = aodVerticesHFTClArr->GetEntriesFast();
 191   TClonesArray &verticesHFRef = *aodVerticesHFTClArr;
 192   if(fD0toKpi || fDstar)   {
 193     aodD0toKpiTClArr->Delete();
 194     iD0toKpi = aodD0toKpiTClArr->GetEntriesFast();
 195   }
 196   if(fJPSItoEle) {
 197     aodJPSItoEleTClArr->Delete();
 198     iJPSItoEle = aodJPSItoEleTClArr->GetEntriesFast();
 199   }
 200   if(f3Prong) {
 201     aodCharm3ProngTClArr->Delete();
 202     i3Prong = aodCharm3ProngTClArr->GetEntriesFast();
 203   }
 204   if(f4Prong) {
 205     aodCharm4ProngTClArr->Delete();
 206     i4Prong = aodCharm4ProngTClArr->GetEntriesFast();
 207   }
 208   if(fDstar) {
 209     aodDstarTClArr->Delete();
 210     iDstar = aodDstarTClArr->GetEntriesFast();
 211   }
 212   TClonesArray &aodD0toKpiRef      = *aodD0toKpiTClArr;
 213   TClonesArray &aodJPSItoEleRef    = *aodJPSItoEleTClArr;
 214   TClonesArray &aodCharm3ProngRef  = *aodCharm3ProngTClArr;
 215   TClonesArray &aodCharm4ProngRef  = *aodCharm4ProngTClArr;
 216   TClonesArray &aodDstarRef        = *aodDstarTClArr;
 217
 218
 219   AliAODRecoDecayHF2Prong *io2Prong  = 0;
 220   AliAODRecoDecayHF3Prong *io3Prong  = 0;
 221   AliAODRecoDecayHF4Prong *io4Prong  = 0;
 222   AliAODRecoCascadeHF     *ioCascade = 0;
 223
 224   Int_t    iTrkP1,iTrkP2,iTrkN1,iTrkN2,iTrkSoftPi,trkEntries;
 225   Double_t xdummy,ydummy,dcap1n1,dcap1n2,dcap2n1,dcap1p2,dcan1n2,dcaCasc;
 226   Bool_t   okD0=kFALSE,okJPSI=kFALSE,ok3Prong=kFALSE,ok4Prong=kFALSE;
 227   Bool_t   okDstar=kFALSE,okD0fromDstar=kFALSE;
 228   AliESDtrack *postrack1 = 0;
 229   AliESDtrack *postrack2 = 0;
 230   AliESDtrack *negtrack1 = 0;
 231   AliESDtrack *negtrack2 = 0;
 232   AliESDtrack *trackPi   = 0;
 233   Double_t dcaMax = fD0toKpiCuts[1];
 234   if(dcaMax < fBtoJPSICuts[1]) dcaMax=fBtoJPSICuts[1];
 235   if(dcaMax < fDplusCuts[11])  dcaMax=fDplusCuts[11];
 236   AliDebug(2,Form(" dca cut set to %f cm",dcaMax));
 237
 238
 239   // get Bz
 240   fBzkG = (Double_t)event->GetMagneticField();
 241
 242   trkEntries = (Int_t)event->GetNumberOfTracks();
 243   AliDebug(1,Form(" Number of tracks: %d",trkEntries));
 244
 245   if(trkEntries<2) {
 246     AliDebug(1,Form(" Not enough tracks: %d",trkEntries));
 247     return;
 248   }
 249
 250   const AliVVertex *primary = event->GetPrimaryVertex();
 251   if(!primary) {
 252     AliDebug(1," No primary vertex from tracks");
 253     return;
 254   }
 255   TString primTitle = primary->GetTitle();
 256   if(!primTitle.Contains("VertexerTracks")) {
 257     AliDebug(1," No primary vertex from tracks");
 258     return;
 259   }
 260
 261   // call function that applies sigle-track selection,
 262   // for displaced tracks and soft pions (both charges) for D*,
 263   // and retrieves primary vertex
 264   TObjArray seleTrksArray(trkEntries);
 265   UChar_t  *seleFlags = new UChar_t[trkEntries]; // bit 0: displaced, bit 1: softpi
 266   Int_t     nSeleTrks=0;
 267   SelectTracksAndCopyVertex(event,seleTrksArray,nSeleTrks,seleFlags);
 268
 269   AliDebug(1,Form(" Selected tracks: %d",nSeleTrks));
 270
 271   TObjArray *twoTrackArray1    = new TObjArray(2);
 272   TObjArray *twoTrackArray2    = new TObjArray(2);
 273   TObjArray *twoTrackArrayCasc = new TObjArray(2);
 274   TObjArray *threeTrackArray   = new TObjArray(3);
 275   TObjArray *fourTrackArray    = new TObjArray(4);
 276
 277   Double_t dispersion;
 278
 279   AliAODRecoDecayHF   *rd = 0;
 280   AliAODRecoCascadeHF *rc = 0;
 281
 282   // LOOP ON  POSITIVE  TRACKS
 283   for(iTrkP1=0; iTrkP1<nSeleTrks; iTrkP1++) {
 284     if(iTrkP1%1==0) AliDebug(1,Form("  1st loop on pos: track number %d of %d",iTrkP1,nSeleTrks));
 285     // get track from tracks array
 286     postrack1 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkP1);
 287     if(postrack1->Charge()<0 || !TESTBIT(seleFlags[iTrkP1],kBitDispl)) continue;
 288     // LOOP ON  NEGATIVE  TRACKS
 289     for(iTrkN1=0; iTrkN1<nSeleTrks; iTrkN1++) {
 290       if(iTrkN1==iTrkP1) continue;
 291       if(iTrkN1%1==0) AliDebug(1,Form("    1st loop on neg: track number %d of %d",iTrkN1,nSeleTrks));
 292       // get track from tracks array
 293       negtrack1 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN1);
 294       if(negtrack1->Charge()>0 || !TESTBIT(seleFlags[iTrkN1],kBitDispl)) continue;
 295       // back to primary vertex
 296       postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 297       negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 298       // DCA between the two tracks
 299       dcap1n1 = postrack1->GetDCA(negtrack1,fBzkG,xdummy,ydummy);
 300       if(dcap1n1>dcaMax) { negtrack1=0; continue; }
 301       // Vertexing
 302       twoTrackArray1->AddAt(postrack1,0);
 303       twoTrackArray1->AddAt(negtrack1,1);
 304       AliAODVertex *vertexp1n1 = ReconstructSecondaryVertex(twoTrackArray1,dispersion);
 305       if(!vertexp1n1) {
 306         twoTrackArray1->Clear();
 307         negtrack1=0;
 308         continue;
 309       }
 310       if(fD0toKpi || fJPSItoEle || fDstar) {
 311         io2Prong = Make2Prong(twoTrackArray1,event,vertexp1n1,dcap1n1,okD0,okJPSI,okD0fromDstar);
 312         if((fD0toKpi && okD0) || (fJPSItoEle && okJPSI)) {
 313           // add the vertex and the decay to the AOD
 314           AliAODVertex *v2Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexp1n1);
 315           if(fInputAOD) AddDaughterRefs(v2Prong,event,twoTrackArray1);
 316           if(okD0) {
 317             rd = new(aodD0toKpiRef[iD0toKpi++])AliAODRecoDecayHF2Prong(*io2Prong);
 318             rd->SetSecondaryVtx(v2Prong);
 319             v2Prong->SetParent(rd);
 320           }
 321           if(okJPSI) {
 322             rd = new(aodJPSItoEleRef[iJPSItoEle++])AliAODRecoDecayHF2Prong(*io2Prong);
 323             rd->SetSecondaryVtx(v2Prong);
 324             if(!okD0) v2Prong->SetParent(rd); // it cannot have two mothers ...
 325           }
 326         }
 327         if(fDstar && okD0fromDstar) {
 328           if(fInputAOD) { // write references in io2Prong
 329             AddDaughterRefs(vertexp1n1,event,twoTrackArray1);
 330             io2Prong->SetSecondaryVtx(vertexp1n1);
 331           }
 332           // create a track from the D0
 333           //AliNeutralTrackParam *trackD0 = new AliNeutralTrackParam(io2Prong); // to be uncommented after commit of AliAODRecoDecay : public AliVTrack
 334           AliESDtrack *trackD0 = new AliESDtrack(); // temporary, just to allow compilation
 335
 336           // LOOP ON TRACKS THAT PASSED THE SOFT PION CUTS
 337           for(iTrkSoftPi=0; iTrkSoftPi<nSeleTrks; iTrkSoftPi++) {
 338             if(iTrkSoftPi==iTrkP1 || iTrkSoftPi==iTrkN1) continue;
 339             if(!TESTBIT(seleFlags[iTrkSoftPi],kBitSoftPi)) continue;
 340             if(iTrkSoftPi%1==0) AliDebug(1,Form("    1st loop on pi_s: track number %d of %d",iTrkSoftPi,nSeleTrks));
 341             // get track from tracks array
 342             trackPi = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkSoftPi);
 343
 344             trackPi->PropagateToDCA(fV1,fBzkG,kVeryBig);
 345             trackD0->PropagateToDCA(fV1,fBzkG,kVeryBig);
 346             // DCA between the two tracks
 347             dcaCasc = trackPi->GetDCA(trackD0,fBzkG,xdummy,ydummy);
 348             // Vertexing
 349             twoTrackArrayCasc->AddAt(trackPi,0);
 350             twoTrackArrayCasc->AddAt(trackD0,1);
 351             AliAODVertex *vertexCasc = ReconstructSecondaryVertex(twoTrackArrayCasc,dispersion);
 352             if(!vertexCasc) {
 353               twoTrackArrayCasc->Clear();
 354               trackPi=0;
 355               continue;
 356             }
 357             ioCascade = MakeCascade(twoTrackArrayCasc,event,vertexCasc,io2Prong,dcaCasc,okDstar);
 358             if(okDstar) {
 359               if(!okD0) {
 360                 // add the D0 to the AOD (if not already done)
 361                 AliAODVertex *v2Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexp1n1);
 362                 if(fInputAOD) AddDaughterRefs(v2Prong,event,twoTrackArray1);
 363                 rd = new(aodD0toKpiRef[iD0toKpi++])AliAODRecoDecayHF2Prong(*io2Prong);
 364                 rd->SetSecondaryVtx(v2Prong);
 365                 v2Prong->SetParent(rd);
 366                 okD0=kTRUE; // this is done to add it only once
 367               }
 368               // add the vertex and the cascade to the AOD
 369               AliAODVertex *vCasc = new(verticesHFRef[iVerticesHF++])AliAODVertex(*vertexCasc);
 370               if(fInputAOD) AddDaughterRefs(vCasc,event,twoTrackArrayCasc); // add the pion
 371               //vCasc->AddDaughter(rd); // doesn't work, because the D0 and the bachelor have different ROOT process ID
 372               rc = new(aodDstarRef[iDstar++])AliAODRecoCascadeHF(*ioCascade);
 373               rc->Set2Prong(rd); // add the D0
 374               rc->SetSecondaryVtx(vCasc);
 375               vCasc->SetParent(rc);
 376             }
 377             twoTrackArrayCasc->Clear();
 378             trackPi=0;
 379             ioCascade=NULL;
 380             delete vertexCasc;
 381           } // end loop on soft pi tracks
 382           if(trackD0) {delete trackD0; trackD0=NULL;}
 383         }
 384         io2Prong=NULL;
 385       }
 386       twoTrackArray1->Clear();
 387       if(!f3Prong && !f4Prong)  {
 388         negtrack1=0;
 389         delete vertexp1n1;
 390         continue;
 391       }
 392
 393
 394       // 2nd LOOP  ON  POSITIVE  TRACKS
 395       for(iTrkP2=iTrkP1+1; iTrkP2<nSeleTrks; iTrkP2++) {
 396         if(iTrkP2==iTrkP1 || iTrkP2==iTrkN1) continue;
 397         if(iTrkP2%1==0) AliDebug(1,Form("    2nd loop on pos: track number %d of %d",iTrkP2,nSeleTrks));
 398         // get track from tracks array
 399         postrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkP2);
 400         if(postrack2->Charge()<0 || !TESTBIT(seleFlags[iTrkP2],kBitDispl)) continue;
 401         // back to primary vertex
 402         postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 403         postrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 404         negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 405         //printf("********** %d %d %d\n",postrack1->GetID(),postrack2->GetID(),negtrack1->GetID());
 406         dcap2n1 = postrack2->GetDCA(negtrack1,fBzkG,xdummy,ydummy);
 407         if(dcap2n1>dcaMax) { postrack2=0; continue; }
 408         dcap1p2 = postrack2->GetDCA(postrack1,fBzkG,xdummy,ydummy);
 409         if(dcap1p2>dcaMax) { postrack2=0; continue; }
 410
 411         // Vertexing
 412         twoTrackArray2->AddAt(postrack2,0);
 413         twoTrackArray2->AddAt(negtrack1,1);
 414         AliAODVertex *vertexp2n1 = ReconstructSecondaryVertex(twoTrackArray2,dispersion);
 415         if(!vertexp2n1) {
 416           twoTrackArray2->Clear();
 417           postrack2=0;
 418           continue;
 419         }
 420         if(f3Prong) {
 421           threeTrackArray->AddAt(postrack1,0);
 422           threeTrackArray->AddAt(negtrack1,1);
 423           threeTrackArray->AddAt(postrack2,2);
 424           AliAODVertex* secVert3PrAOD = ReconstructSecondaryVertex(threeTrackArray,dispersion);
 425           io3Prong = Make3Prong(threeTrackArray,event,secVert3PrAOD,dispersion,vertexp1n1,vertexp2n1,dcap1n1,dcap2n1,dcap1p2,ok3Prong);
 426           if(ok3Prong) {
 427             AliAODVertex *v3Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert3PrAOD);
 428             if(fInputAOD) AddDaughterRefs(v3Prong,event,threeTrackArray);
 429             rd = new(aodCharm3ProngRef[i3Prong++])AliAODRecoDecayHF3Prong(*io3Prong);
 430             rd->SetSecondaryVtx(v3Prong);
 431             v3Prong->SetParent(rd);
 432           }
 433           if(io3Prong) io3Prong=NULL;
 434         }
 435         if(f4Prong) {
 436           // 3rd LOOP  ON  NEGATIVE  TRACKS (for 4 prong)
 437           for(iTrkN2=iTrkN1+1; iTrkN2<nSeleTrks; iTrkN2++) {
 438             if(iTrkN2==iTrkP1 || iTrkN2==iTrkP2 || iTrkN2==iTrkN1) continue;
 439             if(iTrkN2%1==0) AliDebug(1,Form("    3rd loop on neg: track number %d of %d",iTrkN2,nSeleTrks));
 440             // get track from tracks array
 441             negtrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN2);
 442             if(negtrack2->Charge()>0 || !TESTBIT(seleFlags[iTrkN2],kBitDispl)) continue;
 443             // back to primary vertex
 444             postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 445             postrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 446             negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 447             negtrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 448             dcap1n2 = postrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
 449             if(dcap1n2>dcaMax) { negtrack2=0; continue; }
 450             // Vertexing
 451             fourTrackArray->AddAt(postrack1,0);
 452             fourTrackArray->AddAt(negtrack1,1);
 453             fourTrackArray->AddAt(postrack2,2);
 454             fourTrackArray->AddAt(negtrack2,3);
 455             AliAODVertex* secVert4PrAOD = ReconstructSecondaryVertex(fourTrackArray,dispersion);
 456             io4Prong = Make4Prong(fourTrackArray,event,secVert4PrAOD,vertexp1n1,vertexp2n1,dcap1n1,dcap1n2,dcap2n1,ok4Prong);
 457             if(ok4Prong) {
 458               AliAODVertex *v4Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert4PrAOD);
 459               if(fInputAOD) AddDaughterRefs(v4Prong,event,fourTrackArray);
 460               rd = new(aodCharm4ProngRef[i4Prong++])AliAODRecoDecayHF4Prong(*io4Prong);
 461               rd->SetSecondaryVtx(v4Prong);
 462               v4Prong->SetParent(rd);
 463             }
 464             if(io4Prong) io4Prong=NULL;
 465             fourTrackArray->Clear();
 466             negtrack2 = 0;
 467           } // end loop on negative tracks
 468         }
 469         postrack2 = 0;
 470         delete vertexp2n1;
 471       } // end 2nd loop on positive tracks
 472       twoTrackArray2->Clear();
 473
 474       // 2nd LOOP  ON  NEGATIVE  TRACKS
 475       for(iTrkN2=iTrkN1+1; iTrkN2<nSeleTrks; iTrkN2++) {
 476         if(iTrkN2==iTrkP1 || iTrkN2==iTrkP2 || iTrkN2==iTrkN1) continue;
 477         if(iTrkN2%1==0) AliDebug(1,Form("    2nd loop on neg: track number %d of %d",iTrkN2,nSeleTrks));
 478         // get track from tracks array
 479         negtrack2 = (AliESDtrack*)seleTrksArray.UncheckedAt(iTrkN2);
 480         if(negtrack2->Charge()>0 || !TESTBIT(seleFlags[iTrkN2],kBitDispl)) continue;
 481         // back to primary vertex
 482         postrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 483         negtrack1->PropagateToDCA(fV1,fBzkG,kVeryBig);
 484         negtrack2->PropagateToDCA(fV1,fBzkG,kVeryBig);
 485         //printf("********** %d %d %d\n",postrack1->GetID(),negtrack1->GetID(),negtrack2->GetID());
 486         dcap1n2 = postrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
 487         if(dcap1n2>dcaMax) { negtrack2=0; continue; }
 488         dcan1n2 = negtrack1->GetDCA(negtrack2,fBzkG,xdummy,ydummy);
 489         if(dcan1n2>dcaMax) { negtrack2=0; continue; }
 490
 491         // Vertexing
 492         twoTrackArray2->AddAt(postrack1,0);
 493         twoTrackArray2->AddAt(negtrack2,1);
 494
 495         AliAODVertex *vertexp1n2 = ReconstructSecondaryVertex(twoTrackArray2,dispersion);
 496         if(!vertexp1n2) {
 497           twoTrackArray2->Clear();
 498           negtrack2=0;
 499           continue;
 500         }
 501         if(f3Prong) {
 502           threeTrackArray->AddAt(negtrack1,0);
 503           threeTrackArray->AddAt(postrack1,1);
 504           threeTrackArray->AddAt(negtrack2,2);
 505           AliAODVertex* secVert3PrAOD = ReconstructSecondaryVertex(threeTrackArray,dispersion);
 506           io3Prong = Make3Prong(threeTrackArray,event,secVert3PrAOD,dispersion,vertexp1n1,vertexp1n2,dcap1n1,dcap1n2,dcan1n2,ok3Prong);
 507           if(ok3Prong) {
 508             AliAODVertex *v3Prong = new(verticesHFRef[iVerticesHF++])AliAODVertex(*secVert3PrAOD);
 509             if(fInputAOD) AddDaughterRefs(v3Prong,event,threeTrackArray);
 510             rd = new(aodCharm3ProngRef[i3Prong++])AliAODRecoDecayHF3Prong(*io3Prong);
 511             rd->SetSecondaryVtx(v3Prong);
 512             v3Prong->SetParent(rd);
 513           }
 514           if(io3Prong) io3Prong=NULL;
 515         }
 516         negtrack2 = 0;
 517         delete vertexp1n2;
 518       } // end 2nd loop on negative tracks
 519       twoTrackArray2->Clear();
 520
 521       negtrack1 = 0;
 522       delete vertexp1n1;
 523     } // end 1st loop on negative tracks
 524
 525     postrack1 = 0;
 526   }  // end 1st loop on positive tracks
 527
 528
 529   AliDebug(1,Form(" Total HF vertices in event = %d;",
 530                   (Int_t)aodVerticesHFTClArr->GetEntriesFast()));
 531   if(fD0toKpi) {
 532     AliDebug(1,Form(" D0->Kpi in event = %d;",
 533                     (Int_t)aodD0toKpiTClArr->GetEntriesFast()));
 534   }
 535   if(fJPSItoEle) {
 536     AliDebug(1,Form(" JPSI->ee in event = %d;",
 537                     (Int_t)aodJPSItoEleTClArr->GetEntriesFast()));
 538   }
 539   if(f3Prong) {
 540     AliDebug(1,Form(" Charm->3Prong in event = %d;",
 541                     (Int_t)aodCharm3ProngTClArr->GetEntriesFast()));
 542   }
 543   if(f4Prong) {
 544     AliDebug(1,Form(" Charm->4Prong in event = %d;\n",
 545                     (Int_t)aodCharm4ProngTClArr->GetEntriesFast()));
 546   }
 547   if(fDstar) {
 548     AliDebug(1,Form(" D*->D0pi in event = %d;\n",
 549                     (Int_t)aodDstarTClArr->GetEntriesFast()));
 550   }
 551
 552
 553   twoTrackArray1->Delete();  delete twoTrackArray1;
 554   twoTrackArray2->Delete();  delete twoTrackArray2;
 555   twoTrackArrayCasc->Delete();  delete twoTrackArrayCasc;
 556   threeTrackArray->Clear();
 557   threeTrackArray->Delete(); delete threeTrackArray;
 558   fourTrackArray->Delete();  delete fourTrackArray;
 559   delete [] seleFlags; seleFlags=NULL;
 560
 561   if(fInputAOD) {
 562     seleTrksArray.Delete();
 563   }
 564
 565   return;
 566 }
 567 //----------------------------------------------------------------------------
 568 void AliAnalysisVertexingHF::AddDaughterRefs(AliAODVertex *v,AliVEvent *event,
 569                                              TObjArray *trkArray) const
 570 {
 571   // Add the AOD tracks as daughters of the vertex (TRef)
 572
 573   Int_t nTrks = trkArray->GetEntriesFast();
 574
 575   AliExternalTrackParam *track = 0;
 576   AliAODTrack *aodTrack = 0;
 577   Int_t id;
 578
 579   for(Int_t i=0; i<nTrks; i++) {
 580     track = (AliExternalTrackParam*)trkArray->UncheckedAt(i);
 581     id = (Int_t)track->GetID();
 582     //printf("---> %d\n",id);
 583     if(id<0) continue; // this track is a AliAODRecoDecay
 584     aodTrack = (AliAODTrack*)event->GetTrack(fAODMap[id]);
 585     v->AddDaughter(aodTrack);
 586   }
 587
 588   return;
 589 }
 590 //----------------------------------------------------------------------------
 591 AliAODRecoCascadeHF* AliAnalysisVertexingHF::MakeCascade(
 592                                    TObjArray *twoTrackArray,AliVEvent *event,
 593                                    AliAODVertex *secVert,
 594                                    AliAODRecoDecayHF2Prong *rd2Prong,
 595                                    Double_t dca,
 596                                    Bool_t &okDstar) const
 597 {
 598   // Make the cascade as a 2Prong decay and check if it passes Dstar
 599   // reconstruction cuts
 600
 601   okDstar = kFALSE;
 602
 603   Bool_t dummy1,dummy2,dummy3;
 604
 605   // We use Make2Prong to construct the AliAODRecoCascadeHF
 606   // (which inherits from AliAODRecoDecayHF2Prong)
 607   AliAODRecoCascadeHF *theCascade =
 608     (AliAODRecoCascadeHF*)Make2Prong(twoTrackArray,event,secVert,dca,
 609                                      dummy1,dummy2,dummy3);
 610   if(!theCascade) return 0x0;
 611
 612   // charge
 613   AliESDtrack *trackPi = (AliESDtrack*)twoTrackArray->UncheckedAt(0);
 614   theCascade->SetCharge(trackPi->Charge());
 615
 616   //--- selection cuts
 617   //
 618   AliAODRecoCascadeHF *tmpCascade = new AliAODRecoCascadeHF(*theCascade);
 619   tmpCascade->Set2Prong(rd2Prong); // this is needed for the selection
 620   AliAODVertex *primVertexAOD=0;
 621   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
 622     // take event primary vertex
 623     primVertexAOD = PrimaryVertex();
 624     tmpCascade->SetOwnPrimaryVtx(primVertexAOD);
 625     rd2Prong->SetOwnPrimaryVtx(primVertexAOD);
 626   }
 627   // select D*->D0pi
 628   if(fDstar) {
 629     Bool_t testD0=kTRUE;
 630     okDstar = tmpCascade->SelectDstar(fDstarCuts,fD0fromDstarCuts,testD0);
 631   }
 632   tmpCascade->UnsetOwnPrimaryVtx();
 633   tmpCascade->Unset2Prong();
 634   delete tmpCascade; tmpCascade=NULL;
 635   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
 636     rd2Prong->UnsetOwnPrimaryVtx();
 637     delete primVertexAOD; primVertexAOD=NULL;
 638   }
 639   //---
 640
 641   return theCascade;
 642 }
 643 //-----------------------------------------------------------------------------
 644 AliAODRecoDecayHF2Prong *AliAnalysisVertexingHF::Make2Prong(
 645                                    TObjArray *twoTrackArray,AliVEvent *event,
 646                                    AliAODVertex *secVert,Double_t dca,
 647                                    Bool_t &okD0,Bool_t &okJPSI,
 648                                    Bool_t &okD0fromDstar) const
 649 {
 650   // Make 2Prong candidates and check if they pass D0toKpi or BtoJPSI
 651   // reconstruction cuts
 652   // G.E.Bruno (J/psi), A.Dainese (D0->Kpi)
 653
 654   okD0=kFALSE; okJPSI=kFALSE; okD0fromDstar=kFALSE;
 655
 656   Double_t px[2],py[2],pz[2],d0[2],d0err[2];
 657
 658   AliESDtrack *postrack = (AliESDtrack*)twoTrackArray->UncheckedAt(0);
 659   AliESDtrack *negtrack = (AliESDtrack*)twoTrackArray->UncheckedAt(1);
 660
 661   // propagate tracks to secondary vertex, to compute inv. mass
 662   postrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
 663   negtrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
 664
 665   Double_t momentum[3];
 666   postrack->GetPxPyPz(momentum);
 667   px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
 668   negtrack->GetPxPyPz(momentum);
 669   px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
 670
 671
 672   // invariant mass cut (try to improve coding here..)
 673   Bool_t okMassCut=kFALSE;
 674   if(!okMassCut && fD0toKpi)   if(SelectInvMass(0,2,px,py,pz)) okMassCut=kTRUE;
 675   if(!okMassCut && fJPSItoEle) if(SelectInvMass(1,2,px,py,pz)) okMassCut=kTRUE;
 676   if(!okMassCut && fDstar)     if(SelectInvMass(3,2,px,py,pz)) okMassCut=kTRUE;
 677   if(!okMassCut) {
 678     AliDebug(2," candidate didn't pass mass cut");
 679     return 0x0;
 680   }
 681
 682   // primary vertex to be used by this candidate
 683   AliAODVertex *primVertexAOD  = PrimaryVertex(twoTrackArray,event);
 684   if(!primVertexAOD) return 0x0;
 685
 686   Double_t d0z0[2],covd0z0[3];
 687   postrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 688   d0[0] = d0z0[0];
 689   d0err[0] = TMath::Sqrt(covd0z0[0]);
 690   negtrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 691   d0[1] = d0z0[0];
 692   d0err[1] = TMath::Sqrt(covd0z0[0]);
 693
 694   // create the object AliAODRecoDecayHF2Prong
 695   AliAODRecoDecayHF2Prong *the2Prong = new AliAODRecoDecayHF2Prong(secVert,px,py,pz,d0,d0err,dca);
 696   the2Prong->SetOwnPrimaryVtx(primVertexAOD);
 697   UShort_t id[2]={(UShort_t)postrack->GetID(),(UShort_t)negtrack->GetID()};
 698   the2Prong->SetProngIDs(2,id);
 699
 700
 701   // select D0->Kpi
 702   Int_t checkD0,checkD0bar;
 703   if(fD0toKpi)   okD0          = the2Prong->SelectD0(fD0toKpiCuts,checkD0,checkD0bar);
 704   //if(fDebug && fD0toKpi) printf("   %d\n",(Int_t)okD0);
 705   // select J/psi from B
 706   Int_t checkJPSI;
 707   if(fJPSItoEle) okJPSI        = the2Prong->SelectBtoJPSI(fBtoJPSICuts,checkJPSI);
 708   //if(fDebug && fJPSItoEle) printf("   %d\n",(Int_t)okJPSI);
 709   // select D0->Kpi from Dstar
 710   if(fDstar)     okD0fromDstar = the2Prong->SelectD0(fD0fromDstarCuts,checkD0,checkD0bar);
 711   //if(fDebug && fDstar) printf("   %d\n",(Int_t)okD0fromDstar);
 712
 713   // remove the primary vertex (was used only for selection)
 714   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the2Prong->UnsetOwnPrimaryVtx();
 715
 716   // get PID info from ESD
 717   Double_t esdpid0[5];
 718   postrack->GetESDpid(esdpid0);
 719   Double_t esdpid1[5];
 720   negtrack->GetESDpid(esdpid1);
 721   Double_t esdpid[10];
 722   for(Int_t i=0;i<5;i++) {
 723     esdpid[i]   = esdpid0[i];
 724     esdpid[5+i] = esdpid1[i];
 725   }
 726   the2Prong->SetPID(2,esdpid);
 727
 728   return the2Prong;
 729 }
 730 //----------------------------------------------------------------------------
 731 AliAODRecoDecayHF3Prong* AliAnalysisVertexingHF::Make3Prong(
 732                              TObjArray *threeTrackArray,AliVEvent *event,
 733                              AliAODVertex *secVert,Double_t dispersion,
 734                              AliAODVertex *vertexp1n1,AliAODVertex *vertexp2n1,
 735                              Double_t dcap1n1,Double_t dcap2n1,Double_t dcap1p2,
 736                              Bool_t &ok3Prong) const
 737 {
 738   // Make 3Prong candidates and check if they pass Dplus or Ds or Lambdac
 739   // reconstruction cuts
 740   // E.Bruna, F.Prino
 741
 742
 743   ok3Prong=kFALSE;
 744   if(!secVert) return 0x0;
 745
 746   Double_t px[3],py[3],pz[3],d0[3],d0err[3];
 747   Double_t momentum[3];
 748
 749
 750   AliESDtrack *postrack1 = (AliESDtrack*)threeTrackArray->UncheckedAt(0);
 751   AliESDtrack *negtrack  = (AliESDtrack*)threeTrackArray->UncheckedAt(1);
 752   AliESDtrack *postrack2 = (AliESDtrack*)threeTrackArray->UncheckedAt(2);
 753
 754   postrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
 755   negtrack->PropagateToDCA(secVert,fBzkG,kVeryBig);
 756   postrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
 757   postrack1->GetPxPyPz(momentum);
 758   px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
 759   negtrack->GetPxPyPz(momentum);
 760   px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
 761   postrack2->GetPxPyPz(momentum);
 762   px[2] = momentum[0]; py[2] = momentum[1]; pz[2] = momentum[2];
 763
 764   // invariant mass cut for D+, Ds, Lc
 765   Bool_t okMassCut=kFALSE;
 766   if(!okMassCut && f3Prong) if(SelectInvMass(2,3,px,py,pz)) okMassCut=kTRUE;
 767   if(!okMassCut) {
 768     AliDebug(2," candidate didn't pass mass cut");
 769     return 0x0;
 770   }
 771
 772   // primary vertex to be used by this candidate
 773   AliAODVertex *primVertexAOD  = PrimaryVertex(threeTrackArray,event);
 774   if(!primVertexAOD) return 0x0;
 775
 776   Double_t d0z0[2],covd0z0[3];
 777   postrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 778   d0[0]=d0z0[0];
 779   d0err[0] = TMath::Sqrt(covd0z0[0]);
 780   negtrack->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 781   d0[1]=d0z0[0];
 782   d0err[1] = TMath::Sqrt(covd0z0[0]);
 783   postrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 784   d0[2]=d0z0[0];
 785   d0err[2] = TMath::Sqrt(covd0z0[0]);
 786
 787
 788   // create the object AliAODRecoDecayHF3Prong
 789   Double_t pos[3]; primVertexAOD->GetXYZ(pos);
 790   Double_t dca[3]={dcap1n1,dcap2n1,dcap1p2};
 791   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]));
 792   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]));
 793   Short_t charge=(Short_t)(postrack1->Charge()*postrack2->Charge()*negtrack->Charge());
 794   AliAODRecoDecayHF3Prong *the3Prong = new AliAODRecoDecayHF3Prong(secVert,px,py,pz,d0,d0err,dca,dispersion,dist12,dist23,charge);
 795   the3Prong->SetOwnPrimaryVtx(primVertexAOD);
 796   UShort_t id[3]={(UShort_t)postrack1->GetID(),(UShort_t)negtrack->GetID(),(UShort_t)postrack2->GetID()};
 797   the3Prong->SetProngIDs(3,id);
 798
 799
 800   // select D+->Kpipi, Ds->KKpi, Lc->pKpi
 801   if(f3Prong) {
 802     ok3Prong = kFALSE;
 803     Int_t ok1,ok2;
 804     if(the3Prong->SelectDplus(fDplusCuts))   ok3Prong = kTRUE;
 805     if(the3Prong->SelectDs(fDsCuts,ok1,ok2)) ok3Prong = kTRUE;
 806     if(the3Prong->SelectLc(fLcCuts,ok1,ok2)) ok3Prong = kTRUE;
 807   }
 808   //if(fDebug) printf("ok3Prong: %d\n",(Int_t)ok3Prong);
 809
 810   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the3Prong->UnsetOwnPrimaryVtx();
 811
 812   // get PID info from ESD
 813   Double_t esdpid0[5];
 814   postrack1->GetESDpid(esdpid0);
 815   Double_t esdpid1[5];
 816   negtrack->GetESDpid(esdpid1);
 817   Double_t esdpid2[5];
 818   postrack2->GetESDpid(esdpid2);
 819
 820   Double_t esdpid[15];
 821   for(Int_t i=0;i<5;i++) {
 822     esdpid[i]    = esdpid0[i];
 823     esdpid[5+i]  = esdpid1[i];
 824     esdpid[10+i] = esdpid2[i];
 825   }
 826   the3Prong->SetPID(3,esdpid);
 827
 828   return the3Prong;
 829 }
 830 //----------------------------------------------------------------------------
 831 AliAODRecoDecayHF4Prong* AliAnalysisVertexingHF::Make4Prong(
 832                              TObjArray *fourTrackArray,AliVEvent *event,
 833                              AliAODVertex *secVert,
 834                              AliAODVertex *vertexp1n1,AliAODVertex *vertexp2n1,
 835                              Double_t dcap1n1,Double_t dcap1n2,Double_t dcap2n1,
 836                              Bool_t &ok4Prong) const
 837 {
 838   // Make 4Prong candidates and check if they pass D0toKpipipi
 839   // reconstruction cuts
 840   // G.E.Bruno, R.Romita
 841
 842   ok4Prong=kFALSE;
 843   if(!secVert) return 0x0;
 844
 845   Double_t px[4],py[4],pz[4],d0[4],d0err[4];//d0z[3];
 846
 847   px[0]=dcap1n1*dcap1n2*dcap2n1; // TO BE CHANGED (done just to removed compilation warning about dca... not used)
 848
 849   AliESDtrack *postrack1 = (AliESDtrack*)fourTrackArray->UncheckedAt(0);
 850   AliESDtrack *negtrack1 = (AliESDtrack*)fourTrackArray->UncheckedAt(1);
 851   AliESDtrack *postrack2 = (AliESDtrack*)fourTrackArray->UncheckedAt(2);
 852   AliESDtrack *negtrack2 = (AliESDtrack*)fourTrackArray->UncheckedAt(3);
 853
 854   postrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
 855   negtrack1->PropagateToDCA(secVert,fBzkG,kVeryBig);
 856   postrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
 857   negtrack2->PropagateToDCA(secVert,fBzkG,kVeryBig);
 858
 859   Double_t momentum[3];
 860   postrack1->GetPxPyPz(momentum);
 861   px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
 862   negtrack1->GetPxPyPz(momentum);
 863   px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
 864   postrack2->GetPxPyPz(momentum);
 865   px[2] = momentum[0]; py[2] = momentum[1]; pz[2] = momentum[2];
 866   negtrack2->GetPxPyPz(momentum);
 867   px[3] = momentum[0]; py[3] = momentum[1]; pz[3] = momentum[2];
 868
 869   // invariant mass cut for rho or D0 (try to improve coding here..)
 870   //Bool_t okMassCut=kFALSE;
 871   //if(!okMassCut) if(SelectInvMass(2,3,px,py,pz)) okMassCut=kTRUE;
 872   //if(!okMassCut) {
 873   //  if(fDebug) printf(" candidate didn't pass mass cut\n");
 874   //  return 0x0;
 875   //}
 876
 877   // primary vertex to be used by this candidate
 878   AliAODVertex *primVertexAOD  = PrimaryVertex(fourTrackArray,event);
 879   if(!primVertexAOD) return 0x0;
 880
 881   /*
 882     Double_t d0z0[2],covd0z0[3];
 883     postrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 884     negtrack1->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 885     postrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 886     negtrack2->PropagateToDCA(primVertexAOD,fBzkG,kVeryBig,d0z0,covd0z0);
 887   */
 888
 889   // create the object AliAODRecoDecayHF4Prong
 890   Double_t pos[3]; primVertexAOD->GetXYZ(pos);
 891   Double_t dca[6]={0.,0.,0.,0.,0.,0.}; //  modify it
 892   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]));
 893   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]));
 894   Double_t dist14=0.; // to be implemented
 895   Double_t dist34=0.; // to be implemented
 896   Short_t charge=0;
 897   AliAODRecoDecayHF4Prong *the4Prong = new AliAODRecoDecayHF4Prong(secVert,px,py,pz,d0,d0err,dca,dist12,dist23,dist14,dist34,charge);
 898   the4Prong->SetOwnPrimaryVtx(primVertexAOD);
 899   UShort_t id[4]={(UShort_t)postrack1->GetID(),(UShort_t)negtrack1->GetID(),(UShort_t)postrack2->GetID(),(UShort_t)negtrack2->GetID()};
 900   the4Prong->SetProngIDs(4,id);
 901
 902
 903   // use the following two lines once AliAODRecoDecayHF4Prong::SelectD0 is available
 904   // select D0->Kpipipi
 905   //Int_t checkD0,checkD0bar;
 906   // ok4Prong=the4Prong->SelectD0(fD04pCuts,checkD0,checkD0bar);
 907   ok4Prong=kFALSE;  //for the time being ...
 908
 909   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) the4Prong->UnsetOwnPrimaryVtx();
 910
 911   // get PID info from ESD
 912   Double_t esdpid0[5];
 913   postrack1->GetESDpid(esdpid0);
 914   Double_t esdpid1[5];
 915   negtrack1->GetESDpid(esdpid1);
 916   Double_t esdpid2[5];
 917   postrack2->GetESDpid(esdpid2);
 918   Double_t esdpid3[5];
 919   negtrack2->GetESDpid(esdpid3);
 920
 921   Double_t esdpid[20];
 922   for(Int_t i=0;i<5;i++) {
 923     esdpid[i]    = esdpid0[i];
 924     esdpid[5+i]  = esdpid1[i];
 925     esdpid[10+i] = esdpid2[i];
 926     esdpid[15+i] = esdpid3[i];
 927   }
 928   the4Prong->SetPID(4,esdpid);
 929
 930   return the4Prong;
 931 }
 932 //-----------------------------------------------------------------------------
 933 AliAODVertex* AliAnalysisVertexingHF::PrimaryVertex(TObjArray *trkArray,
 934                                                     AliVEvent *event) const
 935 {
 936   // Returns primary vertex to be used for this candidate
 937
 938   AliESDVertex *vertexESD = 0;
 939   AliAODVertex *vertexAOD = 0;
 940
 941
 942   if(!fRecoPrimVtxSkippingTrks && !fRmTrksFromPrimVtx) {
 943     // primary vertex from the input event
 944
 945     vertexESD = new AliESDVertex(*fV1);
 946
 947   } else {
 948     // primary vertex specific to this candidate
 949
 950     Int_t nTrks = trkArray->GetEntriesFast();
 951     AliVertexerTracks *vertexer = new AliVertexerTracks(event->GetMagneticField());
 952
 953     if(fRecoPrimVtxSkippingTrks) {
 954       // recalculating the vertex
 955
 956       if(strstr(fV1->GetTitle(),"VertexerTracksWithConstraint")) {
 957         Float_t diamondcovxy[3];
 958         event->GetDiamondCovXY(diamondcovxy);
 959         Double_t pos[3]={event->GetDiamondX(),event->GetDiamondY(),0.};
 960         Double_t cov[6]={diamondcovxy[0],diamondcovxy[1],diamondcovxy[2],0.,0.,10.};
 961         AliESDVertex *diamond = new AliESDVertex(pos,cov,1.,1);
 962         vertexer->SetVtxStart(diamond);
 963         delete diamond; diamond=NULL;
 964         if(strstr(fV1->GetTitle(),"VertexerTracksWithConstraintOnlyFitter"))
 965           vertexer->SetOnlyFitter();
 966       }
 967       Int_t skipped[10];
 968       Int_t nTrksToSkip=0,id;
 969       AliExternalTrackParam *t = 0;
 970       for(Int_t i=0; i<nTrks; i++) {
 971         t = (AliExternalTrackParam*)trkArray->UncheckedAt(i);
 972         id = (Int_t)t->GetID();
 973         if(id<0) continue;
 974         skipped[nTrksToSkip++] = id;
 975       }
 976       vertexer->SetSkipTracks(nTrksToSkip,skipped);
 977       vertexESD = (AliESDVertex*)vertexer->FindPrimaryVertex(event);
 978
 979     } else if(fRmTrksFromPrimVtx) {
 980       // removing the prongs tracks
 981
 982       TObjArray rmArray(nTrks);
 983       UShort_t *rmId = new UShort_t[nTrks];
 984       AliESDtrack *esdTrack = 0;
 985       AliESDtrack *t = 0;
 986       for(Int_t i=0; i<nTrks; i++) {
 987         t = (AliESDtrack*)trkArray->UncheckedAt(i);
 988         esdTrack = new AliESDtrack(*t);
 989         rmArray.AddLast(esdTrack);
 990         if(esdTrack->GetID()>=0) {
 991           rmId[i]=(UShort_t)esdTrack->GetID();
 992         } else {
 993           rmId[i]=9999;
 994         }
 995       }
 996       Float_t diamondxy[2]={event->GetDiamondX(),event->GetDiamondY()};
 997       vertexESD = vertexer->RemoveTracksFromVertex(fV1,&rmArray,rmId,diamondxy);
 998       delete [] rmId; rmId=NULL;
 999       rmArray.Delete();
1000
1001     }
1002
1003     if(!vertexESD) return vertexAOD;
1004     if(vertexESD->GetNContributors()<=0) {
1005       AliDebug(2,"vertexing failed");
1006       delete vertexESD; vertexESD=NULL;
1007       return vertexAOD;
1008     }
1009
1010     delete vertexer; vertexer=NULL;
1011
1012   }
1013
1014   // convert to AliAODVertex
1015   Double_t pos[3],cov[6],chi2perNDF;
1016   vertexESD->GetXYZ(pos); // position
1017   vertexESD->GetCovMatrix(cov); //covariance matrix
1018   chi2perNDF = vertexESD->GetChi2toNDF();
1019   delete vertexESD; vertexESD=NULL;
1020
1021   vertexAOD = new AliAODVertex(pos,cov,chi2perNDF);
1022
1023   return vertexAOD;
1024 }
1025 //-----------------------------------------------------------------------------
1026 void AliAnalysisVertexingHF::PrintStatus() const {
1027   // Print parameters being used
1028
1029   //printf("Preselections:\n");
1030   //   fTrackFilter->Dump();
1031   if(fSecVtxWithKF) {
1032     printf("Secondary vertex with Kalman filter package (AliKFParticle)\n");
1033   } else {
1034     printf("Secondary vertex with AliVertexerTracks\n");
1035   }
1036   if(fRecoPrimVtxSkippingTrks) printf("RecoPrimVtxSkippingTrks\n");
1037   if(fRmTrksFromPrimVtx) printf("RmTrksFromPrimVtx\n");
1038   if(fD0toKpi) {
1039     printf("Reconstruct D0->Kpi candidates with cuts:\n");
1040     printf("    |M-MD0| [GeV]    < %f\n",fD0toKpiCuts[0]);
1041     printf("    dca    [cm]  < %f\n",fD0toKpiCuts[1]);
1042     printf("    cosThetaStar     < %f\n",fD0toKpiCuts[2]);
1043     printf("    pTK     [GeV/c]    > %f\n",fD0toKpiCuts[3]);
1044     printf("    pTpi    [GeV/c]    > %f\n",fD0toKpiCuts[4]);
1045     printf("    |d0K|  [cm]  < %f\n",fD0toKpiCuts[5]);
1046     printf("    |d0pi| [cm]  < %f\n",fD0toKpiCuts[6]);
1047     printf("    d0d0  [cm^2] < %f\n",fD0toKpiCuts[7]);
1048     printf("    cosThetaPoint    > %f\n",fD0toKpiCuts[8]);
1049   }
1050   if(fDstar) {
1051     printf("    |M-MD*| [GeV]    < %f\n",fDstarCuts[0]);
1052     printf("    |M_Kpipi-M_Kpi-(MD*-MD0)| [GeV]  < %f\n",fDstarCuts[1]);
1053     printf("    pTpisoft [GeV/c]    > %f\n",fDstarCuts[2]);
1054     printf("    pTpisoft [GeV/c]    < %f\n",fDstarCuts[3]);
1055     printf("    Theta(pisoft,D0plane) < %f\n",fDstarCuts[4]);
1056     printf("Reconstruct D*->D0pi candidates with cuts:\n");
1057     printf("   D0 from D* cuts:\n");
1058     printf("    |M-MD0| [GeV]    < %f\n",fD0fromDstarCuts[0]);
1059     printf("    dca    [cm]  < %f\n",fD0fromDstarCuts[1]);
1060     printf("    cosThetaStar     < %f\n",fD0fromDstarCuts[2]);
1061     printf("    pTK     [GeV/c]    > %f\n",fD0fromDstarCuts[3]);
1062     printf("    pTpi    [GeV/c]    > %f\n",fD0fromDstarCuts[4]);
1063     printf("    |d0K|  [cm]  < %f\n",fD0fromDstarCuts[5]);
1064     printf("    |d0pi| [cm]  < %f\n",fD0fromDstarCuts[6]);
1065     printf("    d0d0  [cm^2] < %f\n",fD0fromDstarCuts[7]);
1066     printf("    cosThetaPoint    > %f\n",fD0fromDstarCuts[8]);
1067   }
1068   if(fJPSItoEle) {
1069     printf("Reconstruct J/psi from B candidates with cuts:\n");
1070     printf("    |M-MJPSI| [GeV]    < %f\n",fBtoJPSICuts[0]);
1071     printf("    dca    [cm]  < %f\n",fBtoJPSICuts[1]);
1072     printf("    cosThetaStar     < %f\n",fBtoJPSICuts[2]);
1073     printf("    pTP     [GeV/c]    > %f\n",fBtoJPSICuts[3]);
1074     printf("    pTN    [GeV/c]    > %f\n",fBtoJPSICuts[4]);
1075     printf("    |d0P|  [cm]  < %f\n",fBtoJPSICuts[5]);
1076     printf("    |d0N| [cm]  < %f\n",fBtoJPSICuts[6]);
1077     printf("    d0d0  [cm^2] < %f\n",fBtoJPSICuts[7]);
1078     printf("    cosThetaPoint    > %f\n",fBtoJPSICuts[8]);
1079   }
1080   if(f3Prong) {
1081     printf("Reconstruct 3 prong candidates.\n");
1082     printf("  D+->Kpipi cuts:\n");
1083     printf("    |M-MD+| [GeV]    < %f\n",fDplusCuts[0]);
1084     printf("    pTK     [GeV/c]    > %f\n",fDplusCuts[1]);
1085     printf("    pTPi    [GeV/c]    > %f\n",fDplusCuts[2]);
1086     printf("    |d0K|  [cm]  > %f\n",fDplusCuts[3]);
1087     printf("    |d0Pi| [cm]  > %f\n",fDplusCuts[4]);
1088     printf("    dist12    [cm]  < %f\n",fDplusCuts[5]);
1089     printf("    sigmavert [cm]   < %f\n",fDplusCuts[6]);
1090     printf("    dist prim-sec [cm] > %f\n",fDplusCuts[7]);
1091     printf("    pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fDplusCuts[8]);
1092     printf("    cosThetaPoint    > %f\n",fDplusCuts[9]);
1093     printf("    Sum d0^2 [cm^2]  > %f\n",fDplusCuts[10]);
1094     printf("    dca cut [cm]  < %f\n",fDplusCuts[11]);
1095     printf("  Ds->KKpi cuts:\n");
1096     printf("    |M-MDs| [GeV]    < %f\n",fDsCuts[0]);
1097     printf("    pTK     [GeV/c]    > %f\n",fDsCuts[1]);
1098     printf("    pTPi    [GeV/c]    > %f\n",fDsCuts[2]);
1099     printf("    |d0K|  [cm]  > %f\n",fDsCuts[3]);
1100     printf("    |d0Pi| [cm]  > %f\n",fDsCuts[4]);
1101     printf("    dist12    [cm]  < %f\n",fDsCuts[5]);
1102     printf("    sigmavert [cm]   < %f\n",fDsCuts[6]);
1103     printf("    dist prim-sec [cm] > %f\n",fDsCuts[7]);
1104     printf("    pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fDsCuts[8]);
1105     printf("    cosThetaPoint    > %f\n",fDsCuts[9]);
1106     printf("    Sum d0^2 [cm^2]  > %f\n",fDsCuts[10]);
1107     printf("    dca cut [cm]  < %f\n",fDsCuts[11]);
1108     printf("    Inv. Mass  phi/K0* [GeV]  < %f\n",fDsCuts[12]);
1109     printf("  Lc->pKpi cuts:\n");
1110     printf("    |M-MLc| [GeV]    < %f\n",fLcCuts[0]);
1111     printf("    pTP     [GeV/c]    > %f\n",fLcCuts[1]);
1112     printf("    pTPi and pTK [GeV/c]    > %f\n",fLcCuts[2]);
1113     printf("    |d0P|  [cm]  > %f\n",fLcCuts[3]);
1114     printf("    |d0Pi| and |d0K| [cm]  > %f\n",fLcCuts[4]);
1115     printf("    dist12    [cm]  < %f\n",fLcCuts[5]);
1116     printf("    sigmavert [cm]   < %f\n",fLcCuts[6]);
1117     printf("    dist prim-sec [cm] > %f\n",fLcCuts[7]);
1118     printf("    pM=Max{pT1,pT2,pT3} [GeV/c] > %f\n",fLcCuts[8]);
1119     printf("    cosThetaPoint    > %f\n",fLcCuts[9]);
1120     printf("    Sum d0^2 [cm^2]  > %f\n",fLcCuts[10]);
1121     printf("    dca cut [cm]  < %f\n",fLcCuts[11]);
1122     printf("  Ds->KKpi cuts:\n");
1123   }
1124
1125   return;
1126 }
1127 //-----------------------------------------------------------------------------
1128 AliAODVertex* AliAnalysisVertexingHF::ReconstructSecondaryVertex(TObjArray *trkArray,
1129                                                                  Double_t &dispersion) const
1130 {
1131   // Secondary vertex reconstruction with AliVertexerTracks or AliKFParticle
1132
1133   AliESDVertex *vertexESD = 0;
1134   AliAODVertex *vertexAOD = 0;
1135
1136   if(!fSecVtxWithKF) { // AliVertexerTracks
1137
1138     AliVertexerTracks *vertexer = new AliVertexerTracks(fBzkG);
1139     vertexer->SetVtxStart(fV1);
1140     vertexESD = (AliESDVertex*)vertexer->VertexForSelectedESDTracks(trkArray);
1141     delete vertexer; vertexer=NULL;
1142
1143     if(!vertexESD) return vertexAOD;
1144
1145     if(vertexESD->GetNContributors()!=trkArray->GetEntriesFast()) {
1146       AliDebug(2,"vertexing failed");
1147       delete vertexESD; vertexESD=NULL;
1148       return vertexAOD;
1149     }
1150
1151   } else { // Kalman Filter vertexer (AliKFParticle)
1152
1153     AliKFParticle::SetField(fBzkG);
1154
1155     AliKFVertex vertexKF;
1156
1157     Int_t nTrks = trkArray->GetEntriesFast();
1158     for(Int_t i=0; i<nTrks; i++) {
1159       AliESDtrack *esdTrack = (AliESDtrack*)trkArray->At(i);
1160       AliKFParticle daughterKF(*esdTrack,211);
1161       vertexKF.AddDaughter(daughterKF);
1162     }
1163     vertexESD = new AliESDVertex(vertexKF.Parameters(),
1164                                  vertexKF.CovarianceMatrix(),
1165                                  vertexKF.GetChi2(),
1166                                  vertexKF.GetNContributors());
1167
1168   }
1169
1170   // convert to AliAODVertex
1171   Double_t pos[3],cov[6],chi2perNDF;
1172   vertexESD->GetXYZ(pos); // position
1173   vertexESD->GetCovMatrix(cov); //covariance matrix
1174   chi2perNDF = vertexESD->GetChi2toNDF();
1175   dispersion = vertexESD->GetDispersion();
1176   delete vertexESD; vertexESD=NULL;
1177
1178   vertexAOD = new AliAODVertex(pos,cov,chi2perNDF);
1179   vertexAOD->SetType(AliAODVertex::kUndef); // to be changed
1180
1181   return vertexAOD;
1182 }
1183 //-----------------------------------------------------------------------------
1184 Bool_t AliAnalysisVertexingHF::SelectInvMass(Int_t decay,
1185                                              Int_t nprongs,
1186                                              Double_t *px,
1187                                              Double_t *py,
1188                                              Double_t *pz) const {
1189   // Check invariant mass cut
1190
1191   Short_t dummycharge=0;
1192   Double_t *dummyd0 = new Double_t[nprongs];
1193   for(Int_t ip=0;ip<nprongs;ip++) dummyd0[ip]=0.;
1194   AliAODRecoDecay *rd = new AliAODRecoDecay(0x0,nprongs,dummycharge,px,py,pz,dummyd0);
1195   delete [] dummyd0;
1196
1197   UInt_t pdg2[2],pdg3[3];
1198   Double_t mPDG,minv;
1199
1200   Bool_t retval=kFALSE;
1201   switch (decay)
1202     {
1203     case 0:                  // D0->Kpi
1204       pdg2[0]=211; pdg2[1]=321;
1205       mPDG=TDatabasePDG::Instance()->GetParticle(421)->Mass();
1206       minv = rd->InvMass(nprongs,pdg2);
1207       if(TMath::Abs(minv-mPDG)<fD0toKpiCuts[0]) retval=kTRUE;
1208       pdg2[0]=321; pdg2[1]=211;
1209       minv = rd->InvMass(nprongs,pdg2);
1210       if(TMath::Abs(minv-mPDG)<fD0toKpiCuts[0]) retval=kTRUE;
1211       break;
1212     case 1:                  // JPSI->ee
1213       pdg2[0]=11; pdg2[1]=11;
1214       mPDG=TDatabasePDG::Instance()->GetParticle(443)->Mass();
1215       minv = rd->InvMass(nprongs,pdg2);
1216       if(TMath::Abs(minv-mPDG)<fBtoJPSICuts[0]) retval=kTRUE;
1217       break;
1218     case 2:                  // D+->Kpipi
1219       pdg3[0]=211; pdg3[1]=321; pdg3[2]=211;
1220       mPDG=TDatabasePDG::Instance()->GetParticle(411)->Mass();
1221       minv = rd->InvMass(nprongs,pdg3);
1222       if(TMath::Abs(minv-mPDG)<fDplusCuts[0]) retval=kTRUE;
1223                             // Ds+->KKpi
1224       pdg3[0]=321; pdg3[1]=321; pdg3[2]=211;
1225       mPDG=TDatabasePDG::Instance()->GetParticle(431)->Mass();
1226       minv = rd->InvMass(nprongs,pdg3);
1227       if(TMath::Abs(minv-mPDG)<fDsCuts[0]) retval=kTRUE;
1228       pdg3[0]=211; pdg3[1]=321; pdg3[2]=321;
1229       minv = rd->InvMass(nprongs,pdg3);
1230       if(TMath::Abs(minv-mPDG)<fDsCuts[0]) retval=kTRUE;
1231                             // Lc->pKpi
1232       pdg3[0]=2212; pdg3[1]=321; pdg3[2]=211;
1233       mPDG=TDatabasePDG::Instance()->GetParticle(4122)->Mass();
1234       minv = rd->InvMass(nprongs,pdg3);
1235       if(TMath::Abs(minv-mPDG)<fLcCuts[0]) retval=kTRUE;
1236       pdg3[0]=211; pdg3[1]=321; pdg3[2]=2212;
1237       minv = rd->InvMass(nprongs,pdg3);
1238       if(TMath::Abs(minv-mPDG)<fLcCuts[0]) retval=kTRUE;
1239       break;
1240     case 3:                  // D*->D0pi
1241       pdg2[0]=421; pdg2[1]=211;
1242       mPDG=TDatabasePDG::Instance()->GetParticle(413)->Mass();
1243       minv = rd->InvMass(nprongs,pdg2);
1244       if(TMath::Abs(minv-mPDG)<fDstarCuts[0]) retval=kTRUE;
1245       break;
1246     default:
1247       printf("SelectInvMass(): wrong decay selection\n");
1248       break;
1249     }
1250
1251   delete rd;
1252
1253   return retval;
1254 }
1255 //-----------------------------------------------------------------------------
1256 void AliAnalysisVertexingHF::SelectTracksAndCopyVertex(AliVEvent *event,
1257                                    TObjArray &seleTrksArray,Int_t &nSeleTrks,
1258                                                        UChar_t *seleFlags)
1259 {
1260   // Apply single-track preselection.
1261   // Fill a TObjArray with selected tracks (for displaced vertices or
1262   // soft pion from D*). Selection flag stored in seleFlags.
1263   // Create the AliESDVertex object (convert from AliAODVertex if necessary)
1264   // In case of AOD input, also fill fAODMap for track index<->ID
1265
1266   const AliVVertex *vprimary = event->GetPrimaryVertex();
1267
1268   if(fV1) { delete fV1; fV1=NULL; }
1269   if(fAODMap) { delete [] fAODMap; fAODMap=NULL; }
1270
1271   Int_t nindices=0;
1272   UShort_t *indices = 0;
1273   Double_t pos[3],cov[6];
1274
1275   if(!fInputAOD) { // ESD
1276     fV1 = new AliESDVertex(*((AliESDVertex*)vprimary));
1277   } else {         // AOD
1278     vprimary->GetXYZ(pos);
1279     vprimary->GetCovarianceMatrix(cov);
1280     fV1 = new AliESDVertex(pos,cov,100.,100,vprimary->GetName());
1281     indices = new UShort_t[event->GetNumberOfTracks()];
1282     fAODMap = new Int_t[100000];
1283   }
1284
1285
1286   Int_t entries = (Int_t)event->GetNumberOfTracks();
1287   Bool_t okDisplaced=kFALSE,okSoftPi=kFALSE;
1288   nSeleTrks=0;
1289
1290   // transfer ITS tracks from event to arrays
1291   for(Int_t i=0; i<entries; i++) {
1292     AliVTrack *track = (AliVTrack*)event->GetTrack(i);
1293
1294     if(fInputAOD) {
1295       AliAODTrack *aodt = (AliAODTrack*)track;
1296       if(aodt->GetUsedForPrimVtxFit()) {
1297         indices[nindices]=aodt->GetID(); nindices++;
1298       }
1299       fAODMap[(Int_t)aodt->GetID()] = i;
1300     }
1301
1302     AliESDtrack *esdt = 0;
1303     if(!fInputAOD) {
1304       esdt = (AliESDtrack*)track;
1305     } else {
1306       esdt = new AliESDtrack(track);
1307     }
1308
1309     // single track selection
1310     okDisplaced=kFALSE; okSoftPi=kFALSE;
1311     if(SingleTrkCuts(esdt,okDisplaced,okSoftPi)) {
1312       seleTrksArray.AddLast(esdt);
1313       seleFlags[nSeleTrks]=0;
1314       if(okDisplaced) SETBIT(seleFlags[nSeleTrks],kBitDispl);
1315       if(okSoftPi)    SETBIT(seleFlags[nSeleTrks],kBitSoftPi);
1316       nSeleTrks++;
1317     } else {
1318       if(fInputAOD) delete esdt;
1319       esdt = NULL;
1320       continue;
1321     }
1322
1323   } // end loop on tracks
1324
1325   // primary vertex from AOD
1326   if(fInputAOD) {
1327     delete fV1; fV1=NULL;
1328     vprimary->GetXYZ(pos);
1329     vprimary->GetCovarianceMatrix(cov);
1330     Double_t chi2toNDF = vprimary->GetChi2perNDF();
1331     Int_t ncontr=nindices;
1332     if(!strcmp(vprimary->GetTitle(),"VertexerTracksWithContraint")) ncontr += 1;
1333     Double_t chi2=chi2toNDF*(2.*(Double_t)ncontr-3.);
1334     fV1 = new AliESDVertex(pos,cov,chi2,ncontr,vprimary->GetName());
1335     fV1->SetTitle(vprimary->GetTitle());
1336     fV1->SetIndices(nindices,indices);
1337   }
1338   if(indices) { delete [] indices; indices=NULL; }
1339
1340
1341   return;
1342 }
1343 //-----------------------------------------------------------------------------
1344 void AliAnalysisVertexingHF::SetD0toKpiCuts(Double_t cut0,Double_t cut1,
1345                                    Double_t cut2,Double_t cut3,Double_t cut4,
1346                                    Double_t cut5,Double_t cut6,
1347                                    Double_t cut7,Double_t cut8)
1348 {
1349   // Set the cuts for D0 selection
1350   fD0toKpiCuts[0] = cut0;
1351   fD0toKpiCuts[1] = cut1;
1352   fD0toKpiCuts[2] = cut2;
1353   fD0toKpiCuts[3] = cut3;
1354   fD0toKpiCuts[4] = cut4;
1355   fD0toKpiCuts[5] = cut5;
1356   fD0toKpiCuts[6] = cut6;
1357   fD0toKpiCuts[7] = cut7;
1358   fD0toKpiCuts[8] = cut8;
1359
1360   return;
1361 }
1362 //-----------------------------------------------------------------------------
1363 void AliAnalysisVertexingHF::SetD0toKpiCuts(const Double_t cuts[9])
1364 {
1365   // Set the cuts for D0 selection
1366
1367   for(Int_t i=0; i<9; i++) fD0toKpiCuts[i] = cuts[i];
1368
1369   return;
1370 }
1371 //-----------------------------------------------------------------------------
1372 void AliAnalysisVertexingHF::SetD0fromDstarCuts(Double_t cut0,Double_t cut1,
1373                                    Double_t cut2,Double_t cut3,Double_t cut4,
1374                                    Double_t cut5,Double_t cut6,
1375                                    Double_t cut7,Double_t cut8)
1376 {
1377   // Set the cuts for D0 from D* selection
1378   fD0fromDstarCuts[0] = cut0;
1379   fD0fromDstarCuts[1] = cut1;
1380   fD0fromDstarCuts[2] = cut2;
1381   fD0fromDstarCuts[3] = cut3;
1382   fD0fromDstarCuts[4] = cut4;
1383   fD0fromDstarCuts[5] = cut5;
1384   fD0fromDstarCuts[6] = cut6;
1385   fD0fromDstarCuts[7] = cut7;
1386   fD0fromDstarCuts[8] = cut8;
1387
1388   return;
1389 }
1390 //-----------------------------------------------------------------------------
1391 void AliAnalysisVertexingHF::SetD0fromDstarCuts(const Double_t cuts[9])
1392 {
1393   // Set the cuts for D0 from D* selection
1394
1395   for(Int_t i=0; i<9; i++) fD0fromDstarCuts[i] = cuts[i];
1396
1397   return;
1398 }
1399 //-----------------------------------------------------------------------------
1400 void AliAnalysisVertexingHF::SetDstarCuts(Double_t cut0,Double_t cut1,
1401                                           Double_t cut2,Double_t cut3,
1402                                           Double_t cut4)
1403 {
1404   // Set the cuts for D* selection
1405   fDstarCuts[0] = cut0;
1406   fDstarCuts[1] = cut1;
1407   fDstarCuts[2] = cut2;
1408   fDstarCuts[3] = cut3;
1409   fDstarCuts[4] = cut4;
1410
1411   return;
1412 }
1413 //-----------------------------------------------------------------------------
1414 void AliAnalysisVertexingHF::SetDstarCuts(const Double_t cuts[5])
1415 {
1416   // Set the cuts for D* selection
1417
1418   for(Int_t i=0; i<5; i++) fDstarCuts[i] = cuts[i];
1419
1420   return;
1421 }
1422 //-----------------------------------------------------------------------------
1423 void AliAnalysisVertexingHF::SetBtoJPSICuts(Double_t cut0,Double_t cut1,
1424                                    Double_t cut2,Double_t cut3,Double_t cut4,
1425                                    Double_t cut5,Double_t cut6,
1426                                    Double_t cut7,Double_t cut8)
1427 {
1428   // Set the cuts for J/psi from B selection
1429   fBtoJPSICuts[0] = cut0;
1430   fBtoJPSICuts[1] = cut1;
1431   fBtoJPSICuts[2] = cut2;
1432   fBtoJPSICuts[3] = cut3;
1433   fBtoJPSICuts[4] = cut4;
1434   fBtoJPSICuts[5] = cut5;
1435   fBtoJPSICuts[6] = cut6;
1436   fBtoJPSICuts[7] = cut7;
1437   fBtoJPSICuts[8] = cut8;
1438
1439   return;
1440 }
1441 //-----------------------------------------------------------------------------
1442 void AliAnalysisVertexingHF::SetBtoJPSICuts(const Double_t cuts[9])
1443 {
1444   // Set the cuts for J/psi from B selection
1445
1446   for(Int_t i=0; i<9; i++) fBtoJPSICuts[i] = cuts[i];
1447
1448   return;
1449 }
1450 //-----------------------------------------------------------------------------
1451 void AliAnalysisVertexingHF::SetDplusCuts(Double_t cut0,Double_t cut1,
1452                                    Double_t cut2,Double_t cut3,Double_t cut4,
1453                                    Double_t cut5,Double_t cut6,
1454                                    Double_t cut7,Double_t cut8,
1455                                    Double_t cut9,Double_t cut10,Double_t cut11)
1456 {
1457   // Set the cuts for Dplus->Kpipi selection
1458   fDplusCuts[0] = cut0;
1459   fDplusCuts[1] = cut1;
1460   fDplusCuts[2] = cut2;
1461   fDplusCuts[3] = cut3;
1462   fDplusCuts[4] = cut4;
1463   fDplusCuts[5] = cut5;
1464   fDplusCuts[6] = cut6;
1465   fDplusCuts[7] = cut7;
1466   fDplusCuts[8] = cut8;
1467   fDplusCuts[9] = cut9;
1468   fDplusCuts[10] = cut10;
1469   fDplusCuts[11] = cut11;
1470
1471   return;
1472 }
1473 //-----------------------------------------------------------------------------
1474 void AliAnalysisVertexingHF::SetDplusCuts(const Double_t cuts[12])
1475 {
1476   // Set the cuts for Dplus->Kpipi selection
1477
1478   for(Int_t i=0; i<12; i++) fDplusCuts[i] = cuts[i];
1479
1480   return;
1481 }
1482 //-----------------------------------------------------------------------------
1483 void AliAnalysisVertexingHF::SetDsCuts(Double_t cut0,Double_t cut1,
1484                                    Double_t cut2,Double_t cut3,Double_t cut4,
1485                                    Double_t cut5,Double_t cut6,
1486                                    Double_t cut7,Double_t cut8,
1487                                    Double_t cut9,Double_t cut10,
1488                                    Double_t cut11,Double_t cut12)
1489 {
1490   // Set the cuts for Ds->KKpi selection
1491   fDsCuts[0] = cut0;
1492   fDsCuts[1] = cut1;
1493   fDsCuts[2] = cut2;
1494   fDsCuts[3] = cut3;
1495   fDsCuts[4] = cut4;
1496   fDsCuts[5] = cut5;
1497   fDsCuts[6] = cut6;
1498   fDsCuts[7] = cut7;
1499   fDsCuts[8] = cut8;
1500   fDsCuts[9] = cut9;
1501   fDsCuts[10] = cut10;
1502   fDsCuts[11] = cut11;
1503   fDsCuts[12] = cut12;
1504
1505   return;
1506 }
1507 //-----------------------------------------------------------------------------
1508 void AliAnalysisVertexingHF::SetDsCuts(const Double_t cuts[13])
1509 {
1510   // Set the cuts for Ds->KKpi selection
1511
1512   for(Int_t i=0; i<13; i++) fDsCuts[i] = cuts[i];
1513
1514   return;
1515 }
1516 //-----------------------------------------------------------------------------
1517 void AliAnalysisVertexingHF::SetLcCuts(Double_t cut0,Double_t cut1,
1518                                    Double_t cut2,Double_t cut3,Double_t cut4,
1519                                    Double_t cut5,Double_t cut6,
1520                                    Double_t cut7,Double_t cut8,
1521                                    Double_t cut9,Double_t cut10,Double_t cut11)
1522 {
1523   // Set the cuts for Lc->pKpi selection
1524   fLcCuts[0] = cut0;
1525   fLcCuts[1] = cut1;
1526   fLcCuts[2] = cut2;
1527   fLcCuts[3] = cut3;
1528   fLcCuts[4] = cut4;
1529   fLcCuts[5] = cut5;
1530   fLcCuts[6] = cut6;
1531   fLcCuts[7] = cut7;
1532   fLcCuts[8] = cut8;
1533   fLcCuts[9] = cut9;
1534   fLcCuts[10] = cut10;
1535   fLcCuts[11] = cut11;
1536
1537   return;
1538 }
1539 //-----------------------------------------------------------------------------
1540 void AliAnalysisVertexingHF::SetLcCuts(const Double_t cuts[12])
1541 {
1542   // Set the cuts for Lc->pKpi selection
1543
1544   for(Int_t i=0; i<12; i++) fLcCuts[i] = cuts[i];
1545
1546   return;
1547 }
1548 //-----------------------------------------------------------------------------
1549 Bool_t AliAnalysisVertexingHF::SingleTrkCuts(AliESDtrack *trk,
1550                                              Bool_t &okDisplaced,Bool_t &okSoftPi) const
1551 {
1552   // Check if track passes some kinematical cuts
1553
1554   // this is needed to store the impact parameters
1555   trk->RelateToVertex(fV1,fBzkG,kVeryBig);
1556
1557   UInt_t selectInfo;
1558   //
1559   // Track selection, displaced tracks
1560   selectInfo = 0;
1561   if(fTrackFilter) {
1562     selectInfo = fTrackFilter->IsSelected(trk);
1563   }
1564   if(selectInfo) okDisplaced=kTRUE;
1565   // Track selection, soft pions
1566   selectInfo = 0;
1567   if(fDstar && fTrackFilterSoftPi) {
1568     selectInfo = fTrackFilterSoftPi->IsSelected(trk);
1569   }
1570   if(selectInfo) okSoftPi=kTRUE;
1571
1572   if(okDisplaced || okSoftPi) return kTRUE;
1573
1574   return kFALSE;
1575 }
1576 //-----------------------------------------------------------------------------