PWG3/vertexingHF/AliRDHFCutsD0toKpi.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-2010, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
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  15
  16 /* $Id$ */
  17
  18 /////////////////////////////////////////////////////////////
  19 //
  20 // Class for cuts on AOD reconstructed D0->Kpi
  21 //
  22 // Author: A.Dainese, andrea.dainese@pd.infn.it
  23 /////////////////////////////////////////////////////////////
  24
  25 #include <TDatabasePDG.h>
  26 #include <Riostream.h>
  27
  28 #include "AliRDHFCutsD0toKpi.h"
  29 #include "AliAODRecoDecayHF2Prong.h"
  30 #include "AliAODTrack.h"
  31 #include "AliESDtrack.h"
  32 #include "AliAODPid.h"
  33 #include "AliTPCPIDResponse.h"
  34 #include "AliAODVertex.h"
  35 #include "AliKFVertex.h"
  36 #include "AliKFParticle.h"
  37
  38 ClassImp(AliRDHFCutsD0toKpi)
  39
  40 //--------------------------------------------------------------------------
  41 AliRDHFCutsD0toKpi::AliRDHFCutsD0toKpi(const char* name) :
  42 AliRDHFCuts(name),
  43 fUseSpecialCuts(kFALSE),
  44 fLowPt(kTRUE),
  45 fDefaultPID(kTRUE),
  46 fUseKF(kFALSE)
  47 {
  48   //
  49   // Default Constructor
  50   //
  51   Int_t nvars=9;
  52   SetNVars(nvars);
  53   TString varNames[9]={"inv. mass [GeV]",
  54                        "dca [cm]",
  55                        "cosThetaStar",
  56                        "pTK [GeV/c]",
  57                        "pTPi [GeV/c]",
  58                        "d0K [cm]",
  59                        "d0Pi [cm]",
  60                        "d0d0 [cm^2]",
  61                        "cosThetaPoint"};
  62   Bool_t isUpperCut[9]={kTRUE,
  63                         kTRUE,
  64                         kTRUE,
  65                         kFALSE,
  66                         kFALSE,
  67                         kTRUE,
  68                         kTRUE,
  69                         kTRUE,
  70                         kFALSE};
  71   SetVarNames(nvars,varNames,isUpperCut);
  72   Bool_t forOpt[9]={kFALSE,
  73                     kTRUE,
  74                     kTRUE,
  75                     kFALSE,
  76                     kFALSE,
  77                     kFALSE,
  78                     kFALSE,
  79                     kTRUE,
  80                     kTRUE};
  81   SetVarsForOpt(4,forOpt);
  82   Float_t limits[2]={0,999999999.};
  83   SetPtBins(2,limits);
  84
  85 }
  86 //--------------------------------------------------------------------------
  87 AliRDHFCutsD0toKpi::AliRDHFCutsD0toKpi(const AliRDHFCutsD0toKpi &source) :
  88   AliRDHFCuts(source),
  89   fUseSpecialCuts(source.fUseSpecialCuts),
  90   fLowPt(source.fLowPt),
  91   fDefaultPID(source.fDefaultPID),
  92   fUseKF(source.fUseKF)
  93 {
  94   //
  95   // Copy constructor
  96   //
  97
  98 }
  99 //--------------------------------------------------------------------------
 100 AliRDHFCutsD0toKpi &AliRDHFCutsD0toKpi::operator=(const AliRDHFCutsD0toKpi &source)
 101 {
 102   //
 103   // assignment operator
 104   //
 105   if(&source == this) return *this;
 106
 107   AliRDHFCuts::operator=(source);
 108   fUseSpecialCuts=source.fUseSpecialCuts;
 109   fLowPt=source.fLowPt;
 110   fDefaultPID=source.fDefaultPID;
 111
 112   return *this;
 113 }
 114
 115
 116 //---------------------------------------------------------------------------
 117 void AliRDHFCutsD0toKpi::GetCutVarsForOpt(AliAODRecoDecayHF *d,Float_t *vars,Int_t nvars,Int_t *pdgdaughters) {
 118   //
 119   // Fills in vars the values of the variables
 120   //
 121
 122   if(nvars!=fnVarsForOpt) {
 123     printf("AliRDHFCutsD0toKpi::GetCutsVarsForOpt: wrong number of variables\n");
 124     return;
 125   }
 126
 127   AliAODRecoDecayHF2Prong *dd = (AliAODRecoDecayHF2Prong*)d;
 128
 129   Int_t iter=-1;
 130   if(fVarsForOpt[0]){
 131     iter++;
 132     if(TMath::Abs(pdgdaughters[0])==211) {
 133       vars[iter]=dd->InvMassD0();
 134     } else {
 135       vars[iter]=dd->InvMassD0bar();
 136     }
 137   }
 138   if(fVarsForOpt[1]){
 139     iter++;
 140     vars[iter]=dd->GetDCA();
 141   }
 142   if(fVarsForOpt[2]){
 143     iter++;
 144     if(TMath::Abs(pdgdaughters[0])==211) {
 145       vars[iter] = dd->CosThetaStarD0();
 146     } else {
 147       vars[iter] = dd->CosThetaStarD0bar();
 148     }
 149   }
 150   if(fVarsForOpt[3]){
 151     iter++;
 152    if(TMath::Abs(pdgdaughters[0])==321) {
 153      vars[iter]=dd->PtProng(0);
 154    }
 155    else{
 156      vars[iter]=dd->PtProng(1);
 157    }
 158   }
 159   if(fVarsForOpt[4]){
 160     iter++;
 161    if(TMath::Abs(pdgdaughters[0])==211) {
 162      vars[iter]=dd->PtProng(0);
 163    }
 164    else{
 165      vars[iter]=dd->PtProng(1);
 166    }
 167   }
 168   if(fVarsForOpt[5]){
 169     iter++;
 170     if(TMath::Abs(pdgdaughters[0])==321) {
 171      vars[iter]=dd->Getd0Prong(0);
 172    }
 173    else{
 174      vars[iter]=dd->Getd0Prong(1);
 175    }
 176   }
 177   if(fVarsForOpt[6]){
 178     iter++;
 179      if(TMath::Abs(pdgdaughters[0])==211) {
 180      vars[iter]=dd->Getd0Prong(0);
 181    }
 182    else{
 183      vars[iter]=dd->Getd0Prong(1);
 184    }
 185   }
 186   if(fVarsForOpt[7]){
 187     iter++;
 188     vars[iter]= dd->Prodd0d0();
 189   }
 190   if(fVarsForOpt[8]){
 191     iter++;
 192     vars[iter]=dd->CosPointingAngle();
 193   }
 194
 195   return;
 196 }
 197 //---------------------------------------------------------------------------
 198 Int_t AliRDHFCutsD0toKpi::IsSelected(TObject* obj,Int_t selectionLevel,AliAODEvent* aod) {
 199   //
 200   // Apply selection
 201   //
 202
 203
 204   fIsSelectedCuts=0;
 205   fIsSelectedPID=0;
 206
 207   if(!fCutsRD){
 208     cout<<"Cut matrice not inizialized. Exit..."<<endl;
 209     return 0;
 210   }
 211   //PrintAll();
 212   AliAODRecoDecayHF2Prong* d=(AliAODRecoDecayHF2Prong*)obj;
 213
 214   if(!d){
 215     cout<<"AliAODRecoDecayHF2Prong null"<<endl;
 216     return 0;
 217   }
 218
 219   Double_t ptD=d->Pt();
 220   if(ptD<fMinPtCand) return 0;
 221   if(ptD>fMaxPtCand) return 0;
 222
 223   // returnvalue: 0 not sel, 1 only D0, 2 only D0bar, 3 both
 224   Int_t returnvaluePID=3;
 225   Int_t returnvalueCuts=3;
 226
 227   // selection on candidate
 228   if(selectionLevel==AliRDHFCuts::kAll ||
 229      selectionLevel==AliRDHFCuts::kCandidate) {
 230
 231     if(!fUseKF) {
 232
 233       //recalculate vertex w/o daughters
 234       AliAODVertex *origownvtx=0x0;
 235       AliAODVertex *recvtx=0x0;
 236       if(fRemoveDaughtersFromPrimary) {
 237         if(!RecalcOwnPrimaryVtx(d,aod,origownvtx,recvtx)) return 0;
 238       }
 239
 240
 241       Double_t pt=d->Pt();
 242
 243       Int_t okD0=0,okD0bar=0;
 244
 245       Int_t ptbin=PtBin(pt);
 246       if (ptbin==-1) {
 247         CleanOwnPrimaryVtx(d,origownvtx);
 248         return 0;
 249       }
 250
 251       Double_t mD0,mD0bar,ctsD0,ctsD0bar;
 252       okD0=1; okD0bar=1;
 253
 254       Double_t mD0PDG = TDatabasePDG::Instance()->GetParticle(421)->Mass();
 255
 256       d->InvMassD0(mD0,mD0bar);
 257       if(TMath::Abs(mD0-mD0PDG) > fCutsRD[GetGlobalIndex(0,ptbin)]) okD0 = 0;
 258       if(TMath::Abs(mD0bar-mD0PDG) > fCutsRD[GetGlobalIndex(0,ptbin)])  okD0bar = 0;
 259       if(!okD0 && !okD0bar)  {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 260
 261       if(d->Prodd0d0() > fCutsRD[GetGlobalIndex(7,ptbin)])  {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 262
 263
 264       if(d->Pt2Prong(1) < fCutsRD[GetGlobalIndex(3,ptbin)]*fCutsRD[GetGlobalIndex(3,ptbin)] || d->Pt2Prong(0) < fCutsRD[GetGlobalIndex(4,ptbin)]*fCutsRD[GetGlobalIndex(4,ptbin)]) okD0 = 0;
 265       if(d->Pt2Prong(0) < fCutsRD[GetGlobalIndex(3,ptbin)]*fCutsRD[GetGlobalIndex(3,ptbin)] || d->Pt2Prong(1) < fCutsRD[GetGlobalIndex(4,ptbin)]*fCutsRD[GetGlobalIndex(4,ptbin)]) okD0bar = 0;
 266       if(!okD0 && !okD0bar) {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 267
 268
 269       if(TMath::Abs(d->Getd0Prong(1)) > fCutsRD[GetGlobalIndex(5,ptbin)] ||
 270          TMath::Abs(d->Getd0Prong(0)) > fCutsRD[GetGlobalIndex(6,ptbin)]) okD0 = 0;
 271       if(TMath::Abs(d->Getd0Prong(0)) > fCutsRD[GetGlobalIndex(6,ptbin)] ||
 272          TMath::Abs(d->Getd0Prong(1)) > fCutsRD[GetGlobalIndex(5,ptbin)]) okD0bar = 0;
 273       if(!okD0 && !okD0bar)  {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 274
 275       if(d->GetDCA() > fCutsRD[GetGlobalIndex(1,ptbin)])  {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 276
 277
 278       d->CosThetaStarD0(ctsD0,ctsD0bar);
 279       if(TMath::Abs(ctsD0) > fCutsRD[GetGlobalIndex(2,ptbin)]) okD0 = 0;
 280       if(TMath::Abs(ctsD0bar) > fCutsRD[GetGlobalIndex(2,ptbin)]) okD0bar = 0;
 281       if(!okD0 && !okD0bar)   {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 282
 283       if(d->CosPointingAngle() < fCutsRD[GetGlobalIndex(8,ptbin)])  {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 284
 285       if (returnvalueCuts!=0) {
 286         if (okD0) returnvalueCuts=1; //cuts passed as D0
 287         if (okD0bar) returnvalueCuts=2; //cuts passed as D0bar
 288         if (okD0 && okD0bar) returnvalueCuts=3; //cuts passed as D0 and D0bar
 289       }
 290
 291       // call special cuts
 292       Int_t special=1;
 293       if(fUseSpecialCuts) special=IsSelectedSpecialCuts(d);
 294       if(!special) {CleanOwnPrimaryVtx(d,origownvtx); return 0;}
 295
 296       // unset recalculated primary vertex when not needed any more
 297       CleanOwnPrimaryVtx(d,origownvtx);
 298
 299     } else {
 300       // go to selection with Kalman vertexing, if requested
 301       returnvalueCuts = IsSelectedKF(d,aod);
 302     }
 303
 304     fIsSelectedCuts=returnvalueCuts;
 305     if(!returnvalueCuts) return 0;
 306   }
 307
 308
 309   // selection on PID
 310   if(selectionLevel==AliRDHFCuts::kAll ||
 311      selectionLevel==AliRDHFCuts::kCandidate ||
 312      selectionLevel==AliRDHFCuts::kPID) {
 313     returnvaluePID = IsSelectedPID(d);
 314     fIsSelectedPID=returnvaluePID;
 315     if(!returnvaluePID) return 0;
 316   }
 317
 318   Int_t returnvalueComb=CombineSelectionLevels(3,returnvalueCuts,returnvaluePID);
 319
 320   if(!returnvalueComb) return 0;
 321
 322   // selection on daughter tracks
 323   if(selectionLevel==AliRDHFCuts::kAll ||
 324      selectionLevel==AliRDHFCuts::kTracks) {
 325     if(!AreDaughtersSelected(d)) return 0;
 326   }
 327
 328   //  cout<<"Pid = "<<returnvaluePID<<endl;
 329   return returnvalueComb;
 330 }
 331
 332 //------------------------------------------------------------------------------------------
 333 Int_t AliRDHFCutsD0toKpi::IsSelectedKF(AliAODRecoDecayHF2Prong *d,
 334                                        AliAODEvent* aod) const {
 335   //
 336   // Apply selection using KF-vertexing
 337   //
 338
 339   AliAODTrack *track0 = (AliAODTrack*)d->GetDaughter(0);
 340   AliAODTrack *track1 = (AliAODTrack*)d->GetDaughter(1);
 341
 342   if(!track0 || !track1) {
 343     cout<<"one or two D0 daughters missing!"<<endl;
 344     return 0;
 345   }
 346
 347   // returnvalue: 0 not sel, 1 only D0, 2 only D0bar, 3 both
 348   Int_t returnvalueCuts=3;
 349
 350   // candidate selection with AliKF
 351   AliKFParticle::SetField(aod->GetMagneticField()); // set the magnetic field
 352
 353   Int_t okD0=0,okD0bar=0;
 354   okD0=1; okD0bar=1;
 355
 356   // convert tracks into AliKFParticles
 357
 358   AliKFParticle negPiKF(*track1,-211); // neg pion kandidate
 359   AliKFParticle negKKF(*track1,-321); // neg kaon kandidate
 360   AliKFParticle posPiKF(*track0,211); // pos pion kandidate
 361   AliKFParticle posKKF(*track0,321); // pos kaon kandidate
 362
 363   // build D0 candidates
 364
 365   AliKFParticle d0c(negKKF,posPiKF); // D0 candidate
 366   AliKFParticle ad0c(posKKF,negPiKF); // D0bar candidate
 367
 368   // create kf primary vertices
 369
 370   AliAODVertex *vtx1 = aod->GetPrimaryVertex();
 371   AliKFVertex primVtx(*vtx1);
 372   AliKFVertex aprimVtx(*vtx1);
 373
 374   if(primVtx.GetNContributors()<=0) okD0 = 0;
 375   if(aprimVtx.GetNContributors()<=0) okD0bar = 0;
 376   if(!okD0 && !okD0bar) returnvalueCuts=0;
 377
 378   // calculate mass
 379
 380   Double_t d0mass = d0c.GetMass();
 381   Double_t ad0mass = ad0c.GetMass();
 382
 383   // calculate P of D0 and D0bar
 384   Double_t d0P = d0c.GetP();
 385   Double_t d0Px = d0c.GetPx();
 386   Double_t d0Py = d0c.GetPy();
 387   Double_t d0Pz = d0c.GetPz();
 388   Double_t ad0P = ad0c.GetP();
 389   Double_t ad0Px = ad0c.GetPx();
 390   Double_t ad0Py = ad0c.GetPy();
 391   Double_t ad0Pz = ad0c.GetPz();
 392
 393   //calculate Pt of D0 and D0bar
 394
 395   Double_t pt=d0c.GetPt();
 396   Double_t apt=ad0c.GetPt();
 397
 398   // remove D0 daughters from primary vertices (if used in vertex fit) and add D0-candidates
 399
 400   if(track0->GetUsedForPrimVtxFit()) {
 401     primVtx -= posPiKF;
 402     aprimVtx -= posKKF;
 403   }
 404
 405   if(track1->GetUsedForPrimVtxFit()) {
 406     primVtx -= negKKF;
 407     aprimVtx -= negPiKF;
 408   }
 409
 410   primVtx += d0c;
 411   aprimVtx += ad0c;
 412
 413   if(primVtx.GetNContributors()<=0) okD0 = 0;
 414   if(aprimVtx.GetNContributors()<=0) okD0bar = 0;
 415   if(!okD0 && !okD0bar) returnvalueCuts=0;
 416
 417   //calculate cut variables
 418
 419   // calculate impact params of daughters w.r.t recalculated vertices
 420
 421   Double_t impactPi = posPiKF.GetDistanceFromVertexXY(primVtx);
 422   Double_t aimpactPi = negPiKF.GetDistanceFromVertexXY(aprimVtx);
 423   Double_t impactKa = negKKF.GetDistanceFromVertexXY(primVtx);
 424   Double_t aimpactKa = posKKF.GetDistanceFromVertexXY(aprimVtx);
 425
 426   // calculate Product of Impact Params
 427
 428   Double_t prodParam = impactPi*impactKa;
 429   Double_t aprodParam = aimpactPi*aimpactKa;
 430
 431   // calculate cosine of pointing angles
 432
 433   TVector3 mom(d0c.GetPx(),d0c.GetPy(),d0c.GetPz());
 434   TVector3 fline(d0c.GetX()-primVtx.GetX(),
 435                  d0c.GetY()-primVtx.GetY(),
 436                  d0c.GetZ()-primVtx.GetZ());
 437   Double_t pta = mom.Angle(fline);
 438   Double_t cosP = TMath::Cos(pta); // cosine of pta for D0 candidate
 439
 440   TVector3 amom(ad0c.GetPx(),ad0c.GetPy(),ad0c.GetPz());
 441   TVector3 afline(ad0c.GetX()-aprimVtx.GetX(),
 442                   ad0c.GetY()-aprimVtx.GetY(),
 443                   ad0c.GetZ()-aprimVtx.GetZ());
 444   Double_t apta = amom.Angle(afline);
 445   Double_t acosP = TMath::Cos(apta); // cosine of pta for D0bar candidate
 446
 447   // calculate P of Pions at Decay Position of D0 and D0bar candidates
 448   negKKF.TransportToParticle(d0c);
 449   posPiKF.TransportToParticle(d0c);
 450   posKKF.TransportToParticle(ad0c);
 451   negPiKF.TransportToParticle(ad0c);
 452
 453   Double_t pxPi =  posPiKF.GetPx();
 454   Double_t pyPi =  posPiKF.GetPy();
 455   Double_t pzPi =  posPiKF.GetPz();
 456   Double_t ptPi =  posPiKF.GetPt();
 457
 458   Double_t apxPi =  negPiKF.GetPx();
 459   Double_t apyPi =  negPiKF.GetPy();
 460   Double_t apzPi =  negPiKF.GetPz();
 461   Double_t aptPi =  negPiKF.GetPt();
 462
 463   // calculate Pt of Kaons at Decay Position of D0 and D0bar candidates
 464
 465   Double_t ptK =  negKKF.GetPt();
 466   Double_t aptK =  posKKF.GetPt();
 467
 468   //calculate cos(thetastar)
 469   Double_t massvtx = TDatabasePDG::Instance()->GetParticle(421)->Mass();
 470   Double_t massp[2];
 471   massp[0] = TDatabasePDG::Instance()->GetParticle(321)->Mass();
 472   massp[1] = TDatabasePDG::Instance()->GetParticle(211)->Mass();
 473   Double_t pStar = TMath::Sqrt(TMath::Power(massvtx*massvtx-massp[0]*massp[0]-massp[1]*massp[1],2.)
 474                                -4.*massp[0]*massp[0]*massp[1]*massp[1])/(2.*massvtx);
 475
 476   // cos(thetastar) for D0 and Pion
 477
 478   Double_t d0E = TMath::Sqrt(massvtx*massvtx + d0P*d0P);
 479   Double_t beta = d0P/d0E;
 480   Double_t gamma = d0E/massvtx;
 481   TVector3 momPi(pxPi,pyPi,pzPi);
 482   TVector3 momTot(d0Px,d0Py,d0Pz);
 483   Double_t q1 = momPi.Dot(momTot)/momTot.Mag();
 484   Double_t cts = (q1/gamma-beta*TMath::Sqrt(pStar*pStar+massp[1]*massp[1]))/pStar;
 485
 486   // cos(thetastar) for D0bar and Pion
 487
 488   Double_t ad0E = TMath::Sqrt(massvtx*massvtx + ad0P*ad0P);
 489   Double_t abeta = ad0P/ad0E;
 490   Double_t agamma = ad0E/massvtx;
 491   TVector3 amomPi(apxPi,apyPi,apzPi);
 492   TVector3 amomTot(ad0Px,ad0Py,ad0Pz);
 493   Double_t aq1 = amomPi.Dot(amomTot)/amomTot.Mag();
 494   Double_t acts = (aq1/agamma-abeta*TMath::Sqrt(pStar*pStar+massp[1]*massp[1]))/pStar;
 495
 496   // calculate reduced Chi2 for the full D0 fit
 497   d0c.SetProductionVertex(primVtx);
 498   ad0c.SetProductionVertex(aprimVtx);
 499   negKKF.SetProductionVertex(d0c);
 500   posPiKF.SetProductionVertex(d0c);
 501   posKKF.SetProductionVertex(ad0c);
 502   negPiKF.SetProductionVertex(ad0c);
 503   d0c.TransportToProductionVertex();
 504   ad0c.TransportToProductionVertex();
 505
 506   // calculate the decay length
 507   Double_t decayLengthD0 = d0c.GetDecayLength();
 508   Double_t adecayLengthD0 = ad0c.GetDecayLength();
 509
 510   Double_t chi2D0 = 50.;
 511   if(d0c.GetNDF() > 0 && d0c.GetChi2() >= 0) {
 512     chi2D0 = d0c.GetChi2()/d0c.GetNDF();
 513   }
 514
 515   Double_t achi2D0 = 50.;
 516   if(ad0c.GetNDF() > 0 && ad0c.GetChi2() >= 0) {
 517     achi2D0 = ad0c.GetChi2()/ad0c.GetNDF();
 518   }
 519
 520   // Get the Pt-bins
 521   Int_t ptbin=PtBin(pt);
 522   Int_t aptbin=PtBin(apt);
 523
 524   if(ptbin < 0) okD0 = 0;
 525   if(aptbin < 0) okD0bar = 0;
 526   if(!okD0 && !okD0bar) returnvalueCuts=0;
 527
 528   if(ptK < fCutsRD[GetGlobalIndex(3,ptbin)] || ptPi < fCutsRD[GetGlobalIndex(4,ptbin)]) okD0 = 0;
 529   if(aptK < fCutsRD[GetGlobalIndex(3,aptbin)] || aptPi < fCutsRD[GetGlobalIndex(4,aptbin)]) okD0bar = 0;
 530   if(!okD0 && !okD0bar) returnvalueCuts=0;
 531
 532
 533   if(TMath::Abs(impactKa) > fCutsRD[GetGlobalIndex(5,ptbin)] ||
 534      TMath::Abs(impactPi) > fCutsRD[GetGlobalIndex(6,ptbin)]) okD0 = 0;
 535
 536   if(TMath::Abs(aimpactKa) > fCutsRD[GetGlobalIndex(5,aptbin)] ||
 537      TMath::Abs(aimpactPi) > fCutsRD[GetGlobalIndex(6,aptbin)]) okD0bar = 0;
 538
 539   if(!okD0 && !okD0bar)  returnvalueCuts=0;
 540
 541   // for the moment via the standard method due to bug in AliKF
 542   if(d->GetDCA() > fCutsRD[GetGlobalIndex(1,ptbin)]) okD0 = 0;
 543   if(d->GetDCA() > fCutsRD[GetGlobalIndex(1,aptbin)]) okD0bar = 0;
 544   if(!okD0 && !okD0bar) returnvalueCuts=0;
 545
 546
 547   if(TMath::Abs(d0mass-massvtx) > fCutsRD[GetGlobalIndex(0,ptbin)]) okD0 = 0;
 548   if(TMath::Abs(ad0mass-massvtx) > fCutsRD[GetGlobalIndex(0,aptbin)])  okD0bar = 0;
 549   if(!okD0 && !okD0bar)  returnvalueCuts=0;
 550
 551
 552   if(TMath::Abs(cts) > fCutsRD[GetGlobalIndex(2,ptbin)]) okD0 = 0;
 553   if(TMath::Abs(acts) > fCutsRD[GetGlobalIndex(2,aptbin)]) okD0bar = 0;
 554   if(!okD0 && !okD0bar)   returnvalueCuts=0;
 555
 556   if(prodParam  > fCutsRD[GetGlobalIndex(7,ptbin)]) okD0 = 0;
 557   if(aprodParam > fCutsRD[GetGlobalIndex(7,aptbin)]) okD0bar = 0;
 558   if(!okD0 && !okD0bar)  returnvalueCuts=0;
 559
 560   if(cosP  < fCutsRD[GetGlobalIndex(8,ptbin)]) okD0 = 0;
 561   if(acosP < fCutsRD[GetGlobalIndex(8,aptbin)]) okD0bar = 0;
 562   if(!okD0 && !okD0bar)  returnvalueCuts=0;
 563
 564   if(chi2D0  > fCutsRD[GetGlobalIndex(10,ptbin)]) okD0 = 0;
 565   if(achi2D0 > fCutsRD[GetGlobalIndex(10,aptbin)]) okD0bar = 0;
 566   if(!okD0 && !okD0bar)  returnvalueCuts=0;
 567
 568   if(decayLengthD0  < fCutsRD[GetGlobalIndex(9,ptbin)]) okD0 = 0;
 569   if(adecayLengthD0 < fCutsRD[GetGlobalIndex(9,aptbin)]) okD0bar = 0;
 570   if(!okD0 && !okD0bar)  returnvalueCuts=0;
 571
 572   if(returnvalueCuts!=0) {
 573     if(okD0) returnvalueCuts=1; //cuts passed as D0
 574     if(okD0bar) returnvalueCuts=2; //cuts passed as D0bar
 575     if(okD0 && okD0bar) returnvalueCuts=3; //cuts passed as D0 and D0bar
 576   }
 577
 578   return returnvalueCuts;
 579 }
 580
 581 //---------------------------------------------------------------------------
 582
 583 Bool_t AliRDHFCutsD0toKpi::IsInFiducialAcceptance(Double_t pt, Double_t y) const
 584 {
 585   //
 586   // Checking if D0 is in fiducial acceptance region
 587   //
 588
 589   if(pt > 5.) {
 590     // applying cut for pt > 5 GeV
 591     AliDebug(2,Form("pt of D0 = %f (> 5), cutting at |y| < 0.8\n",pt));
 592     if (TMath::Abs(y) > 0.8){
 593       return kFALSE;
 594     }
 595   } else {
 596     // appliying smooth cut for pt < 5 GeV
 597     Double_t maxFiducialY = -0.2/15*pt*pt+1.9/15*pt+0.5;
 598     Double_t minFiducialY = 0.2/15*pt*pt-1.9/15*pt-0.5;
 599     AliDebug(2,Form("pt of D0 = %f (< 5), cutting  according to the fiducial zone [%f, %f]\n",pt,minFiducialY,maxFiducialY));
 600     if (y < minFiducialY || y > maxFiducialY){
 601       return kFALSE;
 602     }
 603   }
 604
 605   return kTRUE;
 606 }
 607 //---------------------------------------------------------------------------
 608 Int_t AliRDHFCutsD0toKpi::IsSelectedPID(AliAODRecoDecayHF* d)
 609 {
 610   // ############################################################
 611   //
 612   // Apply PID selection
 613   //
 614   //
 615   // ############################################################
 616
 617   if(!fUsePID) return 3;
 618   if(fDefaultPID) return IsSelectedPIDdefault(d);
 619   fWhyRejection=0;
 620   Int_t isD0D0barPID[2]={1,2};
 621   Int_t combinedPID[2][2];// CONVENTION: [daught][isK,IsPi]; [0][0]=(prong 1, isK)=value [0][1]=(prong 1, isPi)=value;
 622   //                                                                                                 same for prong 2
 623   //                                               values convention -1 = discarded
 624   //                                                                  0 = not identified (but compatible) || No PID (->hasPID flag)
 625   //                                                                  1 = identified
 626   // PID search:   pion (TPC) or not K (TOF), Kaon hypothesis for both
 627   // Initial hypothesis: unknwon (but compatible)
 628   combinedPID[0][0]=0;  // prima figlia, Kaon
 629   combinedPID[0][1]=0;  // prima figlia, pione
 630   combinedPID[1][0]=0;  // seconda figlia, Kaon
 631   combinedPID[1][1]=0;  // seconda figlia, pion
 632
 633   Bool_t checkPIDInfo[2]={kTRUE,kTRUE};
 634   Double_t sigma_tmp[3]={fPidHF->GetSigma(0),fPidHF->GetSigma(1),fPidHF->GetSigma(2)};
 635   for(Int_t daught=0;daught<2;daught++){
 636     //Loop con prongs
 637     AliAODTrack *aodtrack=(AliAODTrack*)d->GetDaughter(daught);
 638
 639     if(!(fPidHF->CheckStatus(aodtrack,"TPC")) && !(fPidHF->CheckStatus(aodtrack,"TOF"))) {
 640     checkPIDInfo[daught]=kFALSE;
 641     continue;
 642     }
 643
 644     // identify kaon
 645     combinedPID[daught][0]=fPidHF->MakeRawPid(aodtrack,3);
 646
 647     // identify pion
 648
 649     if(!(fPidHF->CheckStatus(aodtrack,"TPC"))) {
 650      combinedPID[daught][1]=0;
 651     }else{
 652       fPidHF->SetTOF(kFALSE);
 653       combinedPID[daught][1]=fPidHF->MakeRawPid(aodtrack,2);
 654       fPidHF->SetTOF(kTRUE);
 655       fPidHF->SetCompat(kTRUE);
 656      }
 657
 658
 659    if(combinedPID[daught][0]<=-1&&combinedPID[daught][1]<=-1){ // if not a K- and not a pi- both D0 and D0bar excluded
 660     isD0D0barPID[0]=0;
 661     isD0D0barPID[1]=0;
 662    }
 663    else if(combinedPID[daught][0]==2&&combinedPID[daught][1]>=1){
 664     if(aodtrack->Charge()==-1)isD0D0barPID[1]=0;//if K- D0bar excluded
 665     else isD0D0barPID[0]=0;// if K+ D0 excluded
 666    }
 667    else if(combinedPID[daught][0]==1&&combinedPID[daught][1]>=1){
 668     isD0D0barPID[0]=0;
 669     isD0D0barPID[1]=0;
 670    }
 671    else if(combinedPID[daught][0]>=1||combinedPID[daught][1]<=-1){
 672    if(aodtrack->Charge()==-1)isD0D0barPID[1]=0;// not a D0bar if K- or if pi- excluded
 673    else isD0D0barPID[0]=0;//  not a D0 if K+ or if pi+ excluded
 674         }
 675    else if(combinedPID[daught][0]<=-1||combinedPID[daught][1]>=1){
 676     if(aodtrack->Charge()==-1)isD0D0barPID[0]=0;// not a D0 if pi- or if K- excluded
 677     else isD0D0barPID[1]=0;// not a D0bar if pi+ or if K+ excluded
 678    }
 679
 680     if(fLowPt && d->Pt()<2.){
 681      Double_t sigmaTPC[3]={3.,2.,0.};
 682      fPidHF->SetSigmaForTPC(sigmaTPC);
 683     // identify kaon
 684     combinedPID[daught][0]=fPidHF->MakeRawPid(aodtrack,3);
 685
 686     Double_t ptProng=aodtrack->P();
 687
 688     if(ptProng<0.6){
 689      fPidHF->SetCompat(kFALSE);
 690      combinedPID[daught][0]=fPidHF->MakeRawPid(aodtrack,3);
 691      fPidHF->SetCompat(kTRUE);
 692     }
 693
 694     if(!(fPidHF->CheckStatus(aodtrack,"TPC"))) {
 695      combinedPID[daught][1]=0;
 696     }else{
 697       fPidHF->SetTOF(kFALSE);
 698       Double_t sigmaTPCpi[3]={3.,3.,0.};
 699       fPidHF->SetSigmaForTPC(sigmaTPCpi);
 700       combinedPID[daught][1]=fPidHF->MakeRawPid(aodtrack,2);
 701       fPidHF->SetTOF(kTRUE);
 702        if(ptProng<0.8){
 703         Bool_t isTPCpion=fPidHF->IsPionRaw(aodtrack,"TPC");
 704         if(isTPCpion){
 705          combinedPID[daught][1]=1;
 706         }else{
 707          combinedPID[daught][1]=-1;
 708         }
 709       }
 710     }
 711
 712    }
 713    fPidHF->SetSigmaForTPC(sigma_tmp);
 714   }// END OF LOOP ON DAUGHTERS
 715
 716    if(!checkPIDInfo[0] && !checkPIDInfo[1]) {
 717     if(fLowPt) fPidHF->SetSigmaForTPC(sigma_tmp);
 718     return 0;
 719    }
 720
 721
 722   // FURTHER PID REQUEST (both daughter info is needed)
 723   if(combinedPID[0][0]<=-1&&combinedPID[1][0]<=-1){
 724     fWhyRejection=31;// reject cases in which no kaon-compatible tracks are found
 725     if(fLowPt) fPidHF->SetSigmaForTPC(sigma_tmp);
 726     return 0;
 727   }
 728
 729   if(d->Pt()<2.){
 730     if(fLowPt) fPidHF->SetSigmaForTPC(sigma_tmp);
 731     if(combinedPID[0][0]<=0&&combinedPID[1][0]<=0){
 732       fWhyRejection=32;// reject cases where the Kaon is not identified
 733       return 0;
 734     }
 735   }
 736     if(fLowPt) fPidHF->SetSigmaForTPC(sigma_tmp);
 737
 738   //  cout<<"Why? "<<fWhyRejection<<endl;
 739   return isD0D0barPID[0]+isD0D0barPID[1];
 740 }
 741 //---------------------------------------------------------------------------
 742 Int_t AliRDHFCutsD0toKpi::IsSelectedPIDdefault(AliAODRecoDecayHF* d)
 743 {
 744   // ############################################################
 745   //
 746   // Apply PID selection
 747   //
 748   //
 749   // temporary selection: PID AS USED FOR D0 by Andrea Rossi (up to 28/06/2010)
 750   //
 751   // d must be a AliAODRecoDecayHF2Prong object
 752   // returns 0 if both D0 and D0bar are rejectecd
 753   //         1 if D0 is accepted while D0bar is rejected
 754   //         2 if D0bar is accepted while D0 is rejected
 755   //         3 if both are accepted
 756   // fWhyRejection variable (not returned for the moment, print it if needed)
 757   //               keeps some information on why a candidate has been
 758   //               rejected according to the following (unfriendly?) scheme
 759   //             if more rejection cases are considered interesting, just add numbers
 760   //
 761   //      TO BE CONSIDERED WITH A GRAIN OF SALT (the order in which cut are applied is relevant)
 762   //              from 20 to 30: "detector" selection (PID acceptance)
 763   //                                                  26: TPC refit
 764   //                                                  27: ITS refit
 765   //                                                  28: no (TOF||TPC) pid information (no kTOFpid,kTOFout,kTIME,kTPCpid,...)
 766   //
 767   //              from 30 to 40: PID selection
 768   //                                                  31: no Kaon compatible tracks found between daughters
 769   //                                                  32: no Kaon identified tracks found (strong sel. at low momenta)
 770   //                                                  33: both mass hypotheses are rejected
 771   //
 772   // ############################################################
 773
 774   if(!fUsePID) return 3;
 775   fWhyRejection=0;
 776   Int_t isD0D0barPID[2]={1,2};
 777   Double_t nsigmaTPCpi=-1., nsigmaTPCK=-1.; //used for TPC pid
 778   Double_t tofSig,times[5];// used fot TOF pid
 779   Int_t hasPID[2]={2,2};// flag to count how many detectors give PID info for the daughters
 780   Int_t isKaonPionTOF[2][2],isKaonPionTPC[2][2];
 781   Int_t combinedPID[2][2];// CONVENTION: [daught][isK,IsPi]; [0][0]=(prong 1, isK)=value [0][1]=(prong 1, isPi)=value;
 782   //                                                                                                 same for prong 2
 783   //                                               values convention -1 = discarded
 784   //                                                                  0 = not identified (but compatible) || No PID (->hasPID flag)
 785   //                                                                  1 = identified
 786   // PID search:   pion (TPC) or not K (TOF), Kaon hypothesis for both
 787   // Initial hypothesis: unknwon (but compatible)
 788   isKaonPionTOF[0][0]=0;
 789   isKaonPionTOF[0][1]=0;
 790   isKaonPionTOF[1][0]=0;
 791   isKaonPionTOF[1][1]=0;
 792
 793   isKaonPionTPC[0][0]=0;
 794   isKaonPionTPC[0][1]=0;
 795   isKaonPionTPC[1][0]=0;
 796   isKaonPionTPC[1][1]=0;
 797
 798   combinedPID[0][0]=0;
 799   combinedPID[0][1]=0;
 800   combinedPID[1][0]=0;
 801   combinedPID[1][1]=0;
 802
 803
 804
 805   for(Int_t daught=0;daught<2;daught++){
 806     //Loop con prongs
 807
 808     // ########### Step 0- CHECKING minimal PID "ACCEPTANCE" ####################
 809
 810     AliAODTrack *aodtrack=(AliAODTrack*)d->GetDaughter(daught);
 811
 812     if(!(aodtrack->GetStatus()&AliESDtrack::kTPCrefit)){
 813       fWhyRejection=26;
 814       return 0;
 815     }
 816     if(!(aodtrack->GetStatus()&AliESDtrack::kITSrefit)){
 817       fWhyRejection=27;
 818       return 0;
 819     }
 820
 821     AliAODPid *pid=aodtrack->GetDetPid();
 822     if(!pid) {
 823       //delete esdtrack;
 824       hasPID[daught]--;
 825       continue;
 826     }
 827
 828     // ########### Step 1- Check of TPC and TOF response ####################
 829
 830     Double_t ptrack=aodtrack->P();
 831     //#################### TPC PID #######################
 832      if (!(aodtrack->GetStatus()&AliESDtrack::kTPCpid )){
 833        // NO TPC PID INFO FOR THIS TRACK
 834        hasPID[daught]--;
 835      }
 836      else {
 837        static AliTPCPIDResponse theTPCpid;
 838        AliAODPid *pidObj = aodtrack->GetDetPid();
 839        Double_t ptProng=pidObj->GetTPCmomentum();
 840        nsigmaTPCpi = theTPCpid.GetNumberOfSigmas(ptProng,(Float_t)pid->GetTPCsignal(),(Int_t)aodtrack->GetTPCClusterMap().CountBits(),AliPID::kPion);
 841        nsigmaTPCK =  theTPCpid.GetNumberOfSigmas(ptProng,(Float_t)pid->GetTPCsignal(),(Int_t)aodtrack->GetTPCClusterMap().CountBits(),AliPID::kKaon);
 842        //if(ptrack<0.6){
 843        if(ptProng<0.6){
 844          if(TMath::Abs(nsigmaTPCK)<2.)isKaonPionTPC[daught][0]=1;
 845          else if(TMath::Abs(nsigmaTPCK)>3.)isKaonPionTPC[daught][0]=-1;
 846          if(TMath::Abs(nsigmaTPCpi)<2.)isKaonPionTPC[daught][1]=1;
 847          else if(TMath::Abs(nsigmaTPCpi)>3.)isKaonPionTPC[daught][1]=-1;
 848        }
 849        //else if(ptrack<.8){
 850        else if(ptProng<.8){
 851          if(TMath::Abs(nsigmaTPCK)<1.)isKaonPionTPC[daught][0]=1;
 852          else if(TMath::Abs(nsigmaTPCK)>3.)isKaonPionTPC[daught][0]=-1;
 853          if(TMath::Abs(nsigmaTPCpi)<1.)isKaonPionTPC[daught][1]=1;
 854          else if(TMath::Abs(nsigmaTPCpi)>3.)isKaonPionTPC[daught][1]=-1;
 855        }
 856        else {
 857          //     if(nsigmaTPCK>-2.&&nsigmaTPCK<1.)isKaonPionTPC[daught][0]=1;
 858          if(TMath::Abs(nsigmaTPCK)>3.)isKaonPionTPC[daught][0]=-1;
 859          //if(nsigmaTPCpi>-1.&&nsigmaTPCpi<2.)isKaonPionTPC[daught][1]=1;
 860          if(TMath::Abs(nsigmaTPCpi)>3.)isKaonPionTPC[daught][1]=-1;
 861        }
 862      }
 863
 864
 865     // ##### TOF PID: do not ask nothing for pion/protons ############
 866      if(!((aodtrack->GetStatus()&AliESDtrack::kTOFpid)&&(aodtrack->GetStatus()&AliESDtrack::kTOFout)&&(aodtrack->GetStatus()&AliESDtrack::kTIME))){
 867        // NO TOF PID INFO FOR THIS TRACK
 868        hasPID[daught]--;
 869      }
 870      else{
 871        tofSig=pid->GetTOFsignal();
 872        pid->GetIntegratedTimes(times);
 873        if((tofSig-times[3])>5.*160.)return 0;// PROTON REJECTION
 874        if(TMath::Abs(tofSig-times[3])>3.*160.){
 875          isKaonPionTOF[daught][0]=-1;
 876        }
 877        else {
 878          if(ptrack<1.5){
 879            isKaonPionTOF[daught][0]=1;
 880          }
 881        }
 882      }
 883
 884      //######### Step 2: COMBINE TOF and TPC PID ###############
 885      // we apply the following convention: if TPC and TOF disagree (discarded Vs identified) -> unknown
 886      combinedPID[daught][0]=isKaonPionTOF[daught][0]+isKaonPionTPC[daught][0];
 887      combinedPID[daught][1]=isKaonPionTOF[daught][1]+isKaonPionTPC[daught][1];
 888
 889
 890      //######### Step 3:   USE PID INFO
 891
 892      if(combinedPID[daught][0]<=-1&&combinedPID[daught][1]<=-1){// if not a K- and not a pi- both D0 and D0bar excluded
 893        isD0D0barPID[0]=0;
 894        isD0D0barPID[1]=0;
 895      }
 896      else if(combinedPID[daught][0]==2&&combinedPID[daught][1]>=1){// if in conflict (both pi- and K-), if k for both TPC and TOF -> is K
 897        if(aodtrack->Charge()==-1)isD0D0barPID[1]=0;//if K- D0bar excluded
 898        else isD0D0barPID[0]=0;// if K+ D0 excluded
 899      }
 900      else if(combinedPID[daught][0]==1&&combinedPID[daught][1]>=1){// if in conflict (both pi- and K-) and k- only for TPC or TOF -> reject
 901        isD0D0barPID[0]=0;
 902        isD0D0barPID[1]=0;
 903      }
 904      else if(combinedPID[daught][0]>=1||combinedPID[daught][1]<=-1){
 905        if(aodtrack->Charge()==-1)isD0D0barPID[1]=0;// not a D0bar if K- or if pi- excluded
 906        else isD0D0barPID[0]=0;//  not a D0 if K+ or if pi+ excluded
 907      }
 908      else if(combinedPID[daught][0]<=-1||combinedPID[daught][1]>=1){
 909        if(aodtrack->Charge()==-1)isD0D0barPID[0]=0;// not a D0 if pi- or if K- excluded
 910       else isD0D0barPID[1]=0;// not a D0bar if pi+ or if K+ excluded
 911      }
 912
 913      // ##########  ALSO DIFFERENT TPC PID REQUEST FOR LOW pt D0: request of K identification      ###############################
 914      // ########## more tolerant criteria for single particle ID-> more selective criteria for D0   ##############################
 915      // ###############                     NOT OPTIMIZED YET                                  ###################################
 916      if(d->Pt()<2.){
 917        isKaonPionTPC[daught][0]=0;
 918        isKaonPionTPC[daught][1]=0;
 919        AliAODPid *pidObj = aodtrack->GetDetPid();
 920        Double_t ptProng=pidObj->GetTPCmomentum();
 921        //if(ptrack<0.6){
 922        if(ptProng<0.6){
 923          if(TMath::Abs(nsigmaTPCK)<3.)isKaonPionTPC[daught][0]=1;
 924          else if(TMath::Abs(nsigmaTPCK)>3.)isKaonPionTPC[daught][0]=-1;
 925          if(TMath::Abs(nsigmaTPCpi)<3.)isKaonPionTPC[daught][1]=1;
 926          else if(TMath::Abs(nsigmaTPCpi)>3.)isKaonPionTPC[daught][1]=-1;
 927      }
 928        //else if(ptrack<.8){
 929        else if(ptProng<.8){
 930          if(TMath::Abs(nsigmaTPCK)<2.)isKaonPionTPC[daught][0]=1;
 931          else if(TMath::Abs(nsigmaTPCK)>3.)isKaonPionTPC[daught][0]=-1;
 932          if(TMath::Abs(nsigmaTPCpi)<3.)isKaonPionTPC[daught][1]=1;
 933          else if(TMath::Abs(nsigmaTPCpi)>3.)isKaonPionTPC[daught][1]=-1;
 934        }
 935        else {
 936          if(TMath::Abs(nsigmaTPCK)>3.)isKaonPionTPC[daught][0]=-1;
 937          if(TMath::Abs(nsigmaTPCpi)>3.)isKaonPionTPC[daught][1]=-1;
 938        }
 939      }
 940
 941   }// END OF LOOP ON DAUGHTERS
 942
 943   // FURTHER PID REQUEST (both daughter info is needed)
 944   if(combinedPID[0][0]<=-1&&combinedPID[1][0]<=-1){
 945     fWhyRejection=31;// reject cases in which no kaon-compatible tracks are found
 946     return 0;
 947   }
 948   else if(hasPID[0]==0&&hasPID[1]==0){
 949     fWhyRejection=28;// reject cases in which no PID info is available
 950     return 0;
 951   }
 952   if(d->Pt()<2.){
 953     // request of K identification at low D0 pt
 954     combinedPID[0][0]=0;
 955     combinedPID[0][1]=0;
 956     combinedPID[1][0]=0;
 957     combinedPID[1][1]=0;
 958
 959     combinedPID[0][0]=isKaonPionTOF[0][0]+isKaonPionTPC[0][0];
 960     combinedPID[0][1]=isKaonPionTOF[0][1]+isKaonPionTPC[0][1];
 961     combinedPID[1][0]=isKaonPionTOF[1][0]+isKaonPionTPC[1][0];
 962     combinedPID[1][1]=isKaonPionTOF[1][1]+isKaonPionTPC[1][1];
 963
 964     if(combinedPID[0][0]<=0&&combinedPID[1][0]<=0){
 965       fWhyRejection=32;// reject cases where the Kaon is not identified
 966       return 0;
 967     }
 968   }
 969
 970   //  cout<<"Why? "<<fWhyRejection<<endl;
 971   return isD0D0barPID[0]+isD0D0barPID[1];
 972 }
 973
 974
 975
 976 //---------------------------------------------------------------------------
 977 Int_t AliRDHFCutsD0toKpi::CombineSelectionLevels(Int_t selectionvalTrack,
 978                                                  Int_t selectionvalCand,
 979                                                  Int_t selectionvalPID) const
 980 {
 981   //
 982   // This method combines the tracks, PID and cuts selection results
 983   //
 984   if(selectionvalTrack==0) return 0;
 985
 986   Int_t returnvalue;
 987
 988   switch(selectionvalPID) {
 989   case 0:
 990     returnvalue=0;
 991     break;
 992   case 1:
 993     returnvalue=((selectionvalCand==1 || selectionvalCand==3) ? 1 : 0);
 994     break;
 995   case 2:
 996     returnvalue=((selectionvalCand==2 || selectionvalCand==3) ? 2 : 0);
 997     break;
 998   case 3:
 999     returnvalue=selectionvalCand;
1000     break;
1001   default:
1002     returnvalue=0;
1003     break;
1004   }
1005
1006   return returnvalue;
1007 }
1008 //----------------------------------------------------------------------------
1009 Int_t AliRDHFCutsD0toKpi::IsSelectedSpecialCuts(AliAODRecoDecayHF *d) const
1010 {
1011   //
1012   // Note: this method is temporary
1013   // Additional cuts on decay lenght and lower cut for d0 norm are applied using vertex without candidate's daughters
1014   //
1015
1016   //apply cuts
1017
1018   Float_t normDecLengthCut=1.,decLengthCut=TMath::Min(d->P()*0.0066+0.01,0.06/*cm*/), normd0Cut=0.5;
1019   // "decay length" expo law with tau' = beta*gamma*ctau= p/m*ctau =p*0.0123/1.864~p*0.0066
1020   // decay lenght > ctau' implies to retain (1-1/e) (for signal without considering detector resolution),
1021
1022   Int_t returnvalue=3; //cut passed
1023   for(Int_t i=0;i<2/*prongs*/;i++){
1024     if(TMath::Abs(d->Normalizedd0Prong(i))<normd0Cut) return 0; //normd0Cut not passed
1025   }
1026   if(d->DecayLength2()<decLengthCut*decLengthCut)  return 0; //decLengthCut not passed
1027   if(d->NormalizedDecayLength2()<normDecLengthCut*normDecLengthCut)  return 0; //decLengthCut not passed
1028
1029
1030   return returnvalue;
1031 }
1032
1033 //----------------------------------------------
1034 void AliRDHFCutsD0toKpi::SetUseKF(Bool_t useKF)
1035 {
1036   //switch on candidate selection via AliKFparticle
1037   if(!useKF) return;
1038   if(useKF){
1039     fUseKF=useKF;
1040     Int_t nvarsKF=11;
1041     SetNVars(nvarsKF);
1042     TString varNamesKF[11]={"inv. mass [GeV]",
1043                             "dca [cm]",
1044                             "cosThetaStar",
1045                             "pTK [GeV/c]",
1046                             "pTPi [GeV/c]",
1047                             "d0K [cm]",
1048                             "d0Pi [cm]",
1049                             "d0d0 [cm^2]",
1050                             "cosThetaPoint"
1051                             "DecayLength[cm]",
1052                             "RedChi2"};
1053     Bool_t isUpperCutKF[11]={kTRUE,
1054                              kTRUE,
1055                              kTRUE,
1056                              kFALSE,
1057                              kFALSE,
1058                              kTRUE,
1059                              kTRUE,
1060                              kTRUE,
1061                              kFALSE,
1062                              kFALSE,
1063                              kTRUE};
1064     SetVarNames(nvarsKF,varNamesKF,isUpperCutKF);
1065     SetGlobalIndex();
1066     Bool_t forOpt[11]={kFALSE,
1067                     kTRUE,
1068                     kTRUE,
1069                     kFALSE,
1070                     kFALSE,
1071                     kFALSE,
1072                     kFALSE,
1073                     kTRUE,
1074                     kTRUE,
1075                     kFALSE,
1076                     kFALSE};
1077     SetVarsForOpt(4,forOpt);
1078   }
1079   return;
1080 }
1081
1082
1083 void AliRDHFCutsD0toKpi::SetStandardCutsPP2010() {
1084   //
1085   //STANDARD CUTS USED FOR 2010 pp analysis
1086   //dca cut will be enlarged soon to 400 micron
1087   //
1088
1089   SetName("D0toKpiCutsStandard");
1090   SetTitle("Standard Cuts for D0 analysis");
1091
1092   // PILE UP REJECTION
1093   SetOptPileup(AliRDHFCuts::kRejectPileupEvent);
1094
1095   // EVENT CUTS
1096   SetMinVtxContr(1);
1097
1098
1099   // TRACKS ON SINGLE TRACKS
1100   AliESDtrackCuts *esdTrackCuts = new AliESDtrackCuts("AliESDtrackCuts","default");
1101   esdTrackCuts->SetRequireSigmaToVertex(kFALSE);
1102   esdTrackCuts->SetRequireTPCRefit(kTRUE);
1103   esdTrackCuts->SetRequireITSRefit(kTRUE);
1104   //  esdTrackCuts->SetMinNClustersITS(4);
1105   esdTrackCuts->SetClusterRequirementITS(AliESDtrackCuts::kSPD,AliESDtrackCuts::kAny);
1106   esdTrackCuts->SetMinDCAToVertexXY(0.);
1107   esdTrackCuts->SetEtaRange(-0.8,0.8);
1108   esdTrackCuts->SetPtRange(0.3,1.e10);
1109
1110   AddTrackCuts(esdTrackCuts);
1111
1112   const Int_t nptbins =13;
1113   const Double_t ptmax = 9999.;
1114   const Int_t nvars=9;
1115   Float_t ptbins[nptbins+1];
1116   ptbins[0]=0.;
1117   ptbins[1]=0.5;
1118   ptbins[2]=1.;
1119   ptbins[3]=2.;
1120   ptbins[4]=3.;
1121   ptbins[5]=4.;
1122   ptbins[6]=5.;
1123   ptbins[7]=6.;
1124   ptbins[8]=8.;
1125   ptbins[9]=12.;
1126   ptbins[10]=16.;
1127   ptbins[11]=20.;
1128   ptbins[12]=24.;
1129   ptbins[13]=ptmax;
1130
1131   SetGlobalIndex(nvars,nptbins);
1132   SetPtBins(nptbins+1,ptbins);
1133
1134   Float_t cutsMatrixD0toKpiStand[nptbins][nvars]={{0.400,300.*1E-4,0.8,0.3,0.3,1000.*1E-4,1000.*1E-4,-35000.*1E-8,0.73},/* pt<0.5*/
1135                                                   {0.400,300.*1E-4,0.8,0.3,0.3,1000.*1E-4,1000.*1E-4,-35000.*1E-8,0.73},/* 0.5<pt<1*/
1136                                                   {0.400,200.*1E-4,0.8,0.4,0.4,1000.*1E-4,1000.*1E-4,-25000.*1E-8,0.75},/* 1<pt<2 */
1137                                                   {0.400,200.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-15000.*1E-8,0.8},/* 2<pt<3 */
1138                                                   {0.400,200.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-8000.*1E-8,0.85},/* 3<pt<4 */
1139                                                   {0.400,200.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-8000.*1E-8,0.85},/* 4<pt<5 */
1140                                                   {0.400,150.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-8000.*1E-8,0.85},/* 5<pt<6 */
1141                                                   {0.400,150.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-8000.*1E-8,0.85},/* 6<pt<8 */
1142                                                   {0.400,150.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-5000.*1E-8,0.85},/* 8<pt<12 */
1143                                                   {0.400,150.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-0.*1E-8,0.85},/* 12<pt<16 */
1144                                                   {0.400,150.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,0.*1E-8,0.85},/* 16<pt<20 */
1145                                                   {0.400,150.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,0.*1E-8,0.85},/* 20<pt<24 */
1146                                                   {0.400,150.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,0.*1E-8,0.85}};/* pt>24 */
1147
1148
1149   //CREATE TRANSPOSE MATRIX...REVERSE INDICES as required by AliRDHFCuts
1150   Float_t **cutsMatrixTransposeStand=new Float_t*[nvars];
1151   for(Int_t iv=0;iv<nvars;iv++)cutsMatrixTransposeStand[iv]=new Float_t[nptbins];
1152
1153   for (Int_t ibin=0;ibin<nptbins;ibin++){
1154     for (Int_t ivar = 0; ivar<nvars; ivar++){
1155       cutsMatrixTransposeStand[ivar][ibin]=cutsMatrixD0toKpiStand[ibin][ivar];
1156     }
1157   }
1158
1159   SetCuts(nvars,nptbins,cutsMatrixTransposeStand);
1160   SetUseSpecialCuts(kTRUE);
1161   SetRemoveDaughtersFromPrim(kTRUE);
1162
1163   for(Int_t iv=0;iv<nvars;iv++) delete [] cutsMatrixTransposeStand[iv];
1164   delete [] cutsMatrixTransposeStand;
1165   cutsMatrixTransposeStand=NULL;
1166
1167   // PID SETTINGS
1168   AliAODPidHF* pidObj=new AliAODPidHF();
1169   //pidObj->SetName("pid4D0");
1170   Int_t mode=1;
1171   const Int_t nlims=2;
1172   Double_t plims[nlims]={0.6,0.8}; //TPC limits in momentum [GeV/c]
1173   Bool_t compat=kTRUE; //effective only for this mode
1174   Bool_t asym=kTRUE;
1175   Double_t sigmas[5]={2.,1.,0.,3.,0.}; //to be checked and to be modified with new implementation of setters by Rossella
1176   pidObj->SetAsym(asym);// if you want to use the asymmetric bands in TPC
1177   pidObj->SetMatch(mode);
1178   pidObj->SetPLimit(plims,nlims);
1179   pidObj->SetSigma(sigmas);
1180   pidObj->SetCompat(compat);
1181   pidObj->SetTPC(kTRUE);
1182   pidObj->SetTOF(kTRUE);
1183
1184   SetPidHF(pidObj);
1185   SetUsePID(kTRUE);
1186   SetUseDefaultPID(kFALSE);
1187
1188
1189   PrintAll();
1190
1191   delete pidObj;
1192   pidObj=NULL;
1193
1194   return;
1195
1196 }
1197
1198
1199 void AliRDHFCutsD0toKpi::SetStandardCutsPbPb2010() {
1200   //
1201   //PRELIMINARY CUTS USED FOR 2010 PbPb analysis
1202   //... EVOLVING SOON
1203   //
1204
1205   SetName("D0toKpiCutsStandard");
1206   SetTitle("Standard Cuts for D0 analysis in PbPb2010 run");
1207
1208   // PILE UP REJECTION
1209   //SetOptPileup(AliRDHFCuts::kRejectPileupEvent);
1210
1211   // EVENT CUTS
1212   SetMinVtxContr(1);
1213
1214
1215   // TRACKS ON SINGLE TRACKS
1216   AliESDtrackCuts *esdTrackCuts = new AliESDtrackCuts("AliESDtrackCuts","default");
1217   esdTrackCuts->SetRequireSigmaToVertex(kFALSE);
1218   esdTrackCuts->SetRequireTPCRefit(kTRUE);
1219   esdTrackCuts->SetRequireITSRefit(kTRUE);
1220   //  esdTrackCuts->SetMinNClustersITS(4);
1221   esdTrackCuts->SetClusterRequirementITS(AliESDtrackCuts::kSPD,AliESDtrackCuts::kAny);
1222   esdTrackCuts->SetMinDCAToVertexXY(0.);
1223   esdTrackCuts->SetEtaRange(-0.8,0.8);
1224   esdTrackCuts->SetPtRange(0.3,1.e10);
1225
1226   AddTrackCuts(esdTrackCuts);
1227
1228   const Int_t nptbins =13;
1229   const Double_t ptmax = 9999.;
1230   const Int_t nvars=9;
1231   Float_t ptbins[nptbins+1];
1232   ptbins[0]=0.;
1233   ptbins[1]=0.5;
1234   ptbins[2]=1.;
1235   ptbins[3]=2.;
1236   ptbins[4]=3.;
1237   ptbins[5]=4.;
1238   ptbins[6]=5.;
1239   ptbins[7]=6.;
1240   ptbins[8]=8.;
1241   ptbins[9]=12.;
1242   ptbins[10]=16.;
1243   ptbins[11]=20.;
1244   ptbins[12]=24.;
1245   ptbins[13]=ptmax;
1246
1247   SetGlobalIndex(nvars,nptbins);
1248   SetPtBins(nptbins+1,ptbins);
1249
1250   Float_t cutsMatrixD0toKpiStand[nptbins][nvars]={{0.400,300.*1E-4,0.8,0.3,0.3,1000.*1E-4,1000.*1E-4,-40000.*1E-8,0.8},/* pt<0.5*/
1251                                                   {0.400,300.*1E-4,0.8,0.3,0.3,1000.*1E-4,1000.*1E-4,-40000.*1E-8,0.8},/* 0.5<pt<1*/
1252                                                   {0.400,250.*1E-4,0.8,0.4,0.4,1000.*1E-4,1000.*1E-4,-32000.*1E-8,0.8},/* 1<pt<2 */
1253                                                   {0.400,250.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-26000.*1E-8,0.94},/* 2<pt<3 */
1254                                                   {0.400,250.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-1500.*1E-8,0.88},/* 3<pt<4 */
1255                                                   {0.400,250.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-1500.*1E-8,0.88},/* 4<pt<5 */
1256                                                   {0.400,250.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-10000.*1E-8,0.90},/* 5<pt<6 */
1257                                                   {0.400,250.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-10000.*1E-8,0.90},/* 6<pt<8 */
1258                                                   {0.400,250.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-10000.*1E-8,0.90},/* 8<pt<12 */
1259                                                   {0.400,300.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-5000.*1E-8,0.90},/* 12<pt<16 */
1260                                                   {0.400,350.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-5000.*1E-8,0.85},/* 16<pt<20 */
1261                                                   {0.400,350.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-0.*1E-8,0.85},/* 20<pt<24 */
1262                                                   {0.400,350.*1E-4,0.8,0.7,0.7,1000.*1E-4,1000.*1E-4,-0.*1E-8,0.82}};/* pt>24 */
1263
1264
1265   //CREATE TRANSPOSE MATRIX...REVERSE INDICES as required by AliRDHFCuts
1266   Float_t **cutsMatrixTransposeStand=new Float_t*[nvars];
1267   for(Int_t iv=0;iv<nvars;iv++)cutsMatrixTransposeStand[iv]=new Float_t[nptbins];
1268
1269   for (Int_t ibin=0;ibin<nptbins;ibin++){
1270     for (Int_t ivar = 0; ivar<nvars; ivar++){
1271       cutsMatrixTransposeStand[ivar][ibin]=cutsMatrixD0toKpiStand[ibin][ivar];
1272     }
1273   }
1274
1275   SetCuts(nvars,nptbins,cutsMatrixTransposeStand);
1276   SetUseSpecialCuts(kTRUE);
1277   SetRemoveDaughtersFromPrim(kFALSE);// THIS IS VERY IMPORTANT! TOO SLOW IN PbPb
1278   for(Int_t iv=0;iv<nvars;iv++) delete [] cutsMatrixTransposeStand[iv];
1279   delete [] cutsMatrixTransposeStand;
1280   cutsMatrixTransposeStand=NULL;
1281
1282   // PID SETTINGS
1283   AliAODPidHF* pidObj=new AliAODPidHF();
1284   //pidObj->SetName("pid4D0");
1285   Int_t mode=1;
1286   const Int_t nlims=2;
1287   Double_t plims[nlims]={0.6,0.8}; //TPC limits in momentum [GeV/c]
1288   Bool_t compat=kTRUE; //effective only for this mode
1289   Bool_t asym=kTRUE;
1290   Double_t sigmas[5]={2.,1.,0.,3.,0.}; //to be checked and to be modified with new implementation of setters by Rossella
1291   pidObj->SetAsym(asym);// if you want to use the asymmetric bands in TPC
1292   pidObj->SetMatch(mode);
1293   pidObj->SetPLimit(plims,nlims);
1294   pidObj->SetSigma(sigmas);
1295   pidObj->SetCompat(compat);
1296   pidObj->SetTPC(kTRUE);
1297   pidObj->SetTOF(kTRUE);
1298
1299   SetPidHF(pidObj);
1300   SetUsePID(kTRUE);
1301   SetUseDefaultPID(kTRUE);// TEMPORARY: PROTON EXCLUSION SET ONLY IN DEFAULT PID
1302
1303
1304   PrintAll();
1305
1306
1307   delete pidObj;
1308   pidObj=NULL;
1309
1310   return;
1311
1312 }