[u/mrichter/AliRoot.git] / PWG3 / vertexingHF / AliCFVertexingHF3Prong.cxx

/**************************************************************************
 * Copyright(c) 2007-2011, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

///////////////////////////////////////////////////////////////////
//                                                               //
// Class to compute variables for correction framework           //  
// for 3-body decays of D mesons (D+, Ds, Lc)                    //
// in bins of cut variables                                      //
// Origin:       Francesco Prino (prino@to.infn.it)              //
//               Renu Bala       (bala@to.infn.it)               //
//                                                               //
///////////////////////////////////////////////////////////////////

#include "AliAODMCParticle.h"
#include "AliAODEvent.h"
#include "TClonesArray.h"
#include "AliCFVertexingHF.h"
#include "AliESDtrack.h"
#include "TDatabasePDG.h"

#include "AliCFVertexingHF3Prong.h"
#include "AliCFContainer.h"

ClassImp(AliCFVertexingHF3Prong)


//_________________________________________
AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(Int_t decay):
AliCFVertexingHF(),
  fDecay(decay)
 {
  // 
  SetNProngs(3);

  fPtAccCut=new Float_t[fProngs];
  fEtaAccCut=new Float_t[fProngs];
  for(Int_t iP=0; iP<fProngs; iP++){
	  fPtAccCut[iP]=0.1;
	  fEtaAccCut[iP]=0.9;
  }

}
//_________________________________________
AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(TClonesArray *mcArray, UShort_t originDselection, Int_t decay):
  AliCFVertexingHF(mcArray, originDselection),
  fDecay(decay)
 
{
  //
  SetNProngs(3);
  fPtAccCut=new Float_t[fProngs];
  fEtaAccCut=new Float_t[fProngs];
  for(Int_t iP=0; iP<fProngs; iP++){
	  fPtAccCut[iP]=0.1;
	  fEtaAccCut[iP]=0.9;
  }
}


//_____________________________________
AliCFVertexingHF3Prong& AliCFVertexingHF3Prong::operator=(const AliCFVertexingHF3Prong& c){
  //
  if  (this != &c) {

    AliCFVertexingHF::operator=(c);
   
  }
    return *this;
}

//__________________________________________
Bool_t AliCFVertexingHF3Prong::SetRecoCandidateParam(AliAODRecoDecayHF *recoCand){
  // Checks if candidate is signal and D meson is present in MC array
  
  Bool_t bSignAssoc = kFALSE;
  fRecoCandidate = recoCand;

  if (!fRecoCandidate) {
    AliError("fRecoCandidate not found, problem in assignement\n");
    return bSignAssoc;
  }
  
  Int_t pdgCand = -1;
  Int_t pdgDaughter[3]={-1,-1,-1};
  if(fDecay==kDplustoKpipi){
    pdgCand=411;
    pdgDaughter[0]=321;
    pdgDaughter[1]=211;
    pdgDaughter[2]=211;
  }else if(fDecay==kDstoKKpi){
    pdgCand=431;
    pdgDaughter[0]=321;
    pdgDaughter[1]=321;
    pdgDaughter[2]=211;
  }else if(fDecay==kLctopKpi){
    AliError("LambdaC not yet implemented");
    return bSignAssoc;
  }else{
    AliError("WRONG DECAY SETTING");
    return bSignAssoc;    
  }

  Int_t mcLabel = fRecoCandidate->MatchToMC(pdgCand,fmcArray,3,pdgDaughter);  
  if (mcLabel == -1) return bSignAssoc;

  if (fRecoCandidate->NumberOfFakeDaughters()>0){
	  fFake = 0;    // fake candidate
	  if (fFakeSelection==1) return bSignAssoc;
  }
  if (fRecoCandidate->NumberOfFakeDaughters()==0){
	  fFake = 2;    // non-fake candidate
	  if (fFakeSelection==2) return bSignAssoc;
  }
  
  SetMCLabel(mcLabel);
  fmcPartCandidate = dynamic_cast<AliAODMCParticle*>(fmcArray->At(fmcLabel));
    
  if (!fmcPartCandidate){
    AliDebug(3,"No part candidate");
    return bSignAssoc;
  }

  bSignAssoc = kTRUE;
  return bSignAssoc;
}

//______________________________________________
Bool_t AliCFVertexingHF3Prong::GetGeneratedValuesFromMCParticle(Double_t* vectorMC) {
  // 
  // collecting all the necessary info from MC particle and fill vectorMC: 12 variables
  // pt_D
  // y_D
  // phi_D
  // ctau
  // cos point
  // pt_1
  // pt_2
  // pt_3
  // d0_1
  // d0_2
  // d0_3
  // zPrimVert
  // centrality

  Bool_t bGenValues = kFALSE;
		
  Int_t pdgCand = -1;
  if(fDecay==kDplustoKpipi){
    pdgCand=411;
  }else if(fDecay==kDstoKKpi){
    pdgCand=431;
  }else if(fDecay==kLctopKpi){
    AliError("LambdaC not yet implemented");
    return bGenValues;
  }else{
    AliError("WRONG DECAY SETTING");
    return bGenValues;
  }

  Double_t vertD[3] = {0,0,0};   // D origin
  fmcPartCandidate->XvYvZv(vertD);  // cm

  Int_t nprongs = 3;
  Int_t daughter[3];
  Short_t charge = fmcPartCandidate->Charge();

  // order the daughters as LS,OS,LS, e.g. D+ -> pi+ K- pi+
  // the 2 LS are ordered so that in pos. 0 there is the one with lower label value
  Int_t index=0;
  Int_t nDauLS=0;
  Int_t nDauOS=0;


  Int_t nDau=fmcPartCandidate->GetNDaughters();
  Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0); 
  if(nDau==3){
    for(Int_t iDau=0; iDau<3; iDau++){
      Int_t ind = labelFirstDau+iDau;
      AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
      if(!part){
	AliError("Daughter particle not found in MC array");
	return bGenValues;
      }
      Short_t signDau=part->Charge();
      if(signDau==charge){
	nDauLS++;
	daughter[index] = ind;
	index=2;
      }else{
	daughter[1] = ind;
	nDauOS++;
      }
    }
  }else if(nDau==2){
    for(Int_t iDau=0; iDau<2; iDau++){
      Int_t ind = labelFirstDau+iDau;
      AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
      if(!part){
	AliError("Daughter particle not found in MC array");
	return bGenValues;
      }
      Int_t pdgCode=TMath::Abs(part->GetPdgCode());
      if(pdgCode==211 || pdgCode==321 || pdgCode==2212){
	Short_t signDau=part->Charge();
	if(signDau==charge){
	  nDauLS++;
	  daughter[index] = ind;
	  index=2;
	}else{
	  daughter[1] = ind;
	  nDauOS++;
	}
      }else{
	Int_t nDauRes=part->GetNDaughters();
	if(nDauRes!=2){
	  AliError("Wrong resonant decay");
	  return bGenValues;
	}
	Int_t labelFirstDauRes = part->GetDaughter(0); 	
	for(Int_t iDauRes=0; iDauRes<2; iDauRes++){
	  Int_t indDR = labelFirstDauRes+iDauRes;
	  AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR));
	  if(!partDR){
	    AliError("Daughter particle not found in MC array");
	    return bGenValues;
	  }
	  Short_t signDau=partDR->Charge();
	  if(signDau==charge){
	    nDauLS++;
	    daughter[index] = ind;
	    index=2;
	  }else{
	    daughter[1] = ind;
	    nDauOS++;
	  }
	}
      }
    }
  }else{
    AliError(Form("Wrong number of daughters %d",nDau));
    return bGenValues;
  }

  if(nDauLS!=2 || nDauOS!=1){
    AliError(Form("Wrong decay channel: LS and OS daughters not OK: %d %d",nDauLS,nDauOS));
    return bGenValues;
  }
  if(daughter[0]>daughter[2]){
    Int_t tmp=daughter[0];
    daughter[0]=daughter[2];
    daughter[2]=tmp;
  }
  
  // getting the momentum from the daughters and decay vertex
  Double_t px[3],py[3],pz[3],pt[3];
  Double_t vertDec[3] = {0,0,0};   // decay vertex		
  for(Int_t iDau=0; iDau<3; iDau++){
    AliAODMCParticle* part=dynamic_cast<AliAODMCParticle*>(fmcArray->At(daughter[iDau]));
    if(!part){
      AliError("Daughter particle not found in MC array");
      return bGenValues;
    }
    px[iDau]=part->Px();
    py[iDau]=part->Py();
    pz[iDau]=part->Pz();
    pt[iDau]=part->Pt();
    if(iDau==0) part->XvYvZv(vertDec);
  }

  Double_t d0[3] = {0.,0.,0.}; // dummy values!!!!
  
  AliAODRecoDecayHF* decay = new AliAODRecoDecayHF(vertD,vertDec,nprongs,charge,px,py,pz,d0);
  Double_t cT = decay->Ct(pdgCand);
		
  vectorMC[0] = fmcPartCandidate->Pt();
  vectorMC[1] = fmcPartCandidate->Y() ;
  vectorMC[2] = fmcPartCandidate->Phi();
  vectorMC[3] = cT*1.E4 ;  // in micron
  vectorMC[4] = 1.01;    // cos pointing angle, dummy value, meaningless in MC
  vectorMC[5] = pt[0];
  vectorMC[6] = pt[1];
  vectorMC[7] = pt[2];
  vectorMC[8] = 0.;   // imppar0, dummy value, meaningless in MC
  vectorMC[9] = 0.;   // imppar1, dummy value, meaningless in MC, in micron
  vectorMC[10] = 0.;   // imppar2, dummy value, meaningless in MC, in micron
  vectorMC[11] = fzMCVertex;    // z of reconstructed of primary vertex
  vectorMC[12] = fCentValue; // reconstructed centrality value 
  vectorMC[13] = 1.;           // always filling with 1 at MC level 


  bGenValues = kTRUE;
  return bGenValues;
}


//____________________________________________
Bool_t AliCFVertexingHF3Prong::GetRecoValuesFromCandidate(Double_t *vectorReco) const
{ 
  // Fill vector (see above) with reconstructed quantities
  Bool_t bFillRecoValues=kFALSE;
  
  Int_t pdgCand = -1;
  if(fDecay==kDplustoKpipi){
    pdgCand=411;
  }else if(fDecay==kDstoKKpi){
    pdgCand=431;
  }else if(fDecay==kLctopKpi){
    AliError("LambdaC not yet implemented");
    return bFillRecoValues;
  }else{
    AliError("WRONG DECAY SETTING");
    return bFillRecoValues;
  }

  AliAODRecoDecayHF3Prong *decay3 = (AliAODRecoDecayHF3Prong*)fRecoCandidate;
  Short_t charge=decay3->Charge();
  Double_t rapidity=decay3->Y(pdgCand);
  Double_t cT=decay3->Ct(pdgCand); 
  Double_t pt = decay3->Pt();
  Double_t cosPointingAngle = decay3->CosPointingAngle();
  Double_t phi = decay3->Phi();

  Int_t daughtSorted[3];
  Int_t tmpIndex=0;
  Int_t nDauLS=0;
  Int_t nDauOS=0;
  for(Int_t iDau=0; iDau<3; iDau++){
    AliAODTrack *trk = (AliAODTrack*)decay3->GetDaughter(iDau);
    Int_t label = TMath::Abs(trk->GetLabel());
    Short_t chargedau=trk->Charge();
    if(chargedau==charge){
      daughtSorted[tmpIndex]=label;
      tmpIndex=2;
      nDauLS++;
    }else{
      daughtSorted[1]=label;
      nDauOS++;
    }
  }

  if(nDauLS!=2 || nDauOS!=1){
    AliError("Wrong decay channel: number of OS and LS tracks not OK");
    return bFillRecoValues;
  }
  
  if(daughtSorted[0]>daughtSorted[2]){
    Int_t tmp=daughtSorted[0];
    daughtSorted[0]=daughtSorted[2];
    daughtSorted[2]=tmp;
  }
  
  
  vectorReco[0] = pt;
  vectorReco[1] = rapidity;
  vectorReco[2] = phi;
  vectorReco[3] = cT*1.E4;  // in micron
  vectorReco[4] = cosPointingAngle;  // in micron
  vectorReco[5] = decay3->PtProng(daughtSorted[0]);
  vectorReco[6] = decay3->PtProng(daughtSorted[1]);
  vectorReco[7] = decay3->PtProng(daughtSorted[2]);
  vectorReco[8] = decay3->Getd0Prong(daughtSorted[0]);
  vectorReco[9] = decay3->Getd0Prong(daughtSorted[1]);
  vectorReco[10] = decay3->Getd0Prong(daughtSorted[2]);
  vectorReco[11] = fzPrimVertex;    // z of reconstructed of primary vertex
  vectorReco[12] = fCentValue; //reconstructed centrality value
  vectorReco[13] = fFake;      // whether the reconstructed candidate was a fake (fFake = 0) or not (fFake = 2) 


  bFillRecoValues = kTRUE;
  return bFillRecoValues;
}


//_____________________________________________________________
Bool_t AliCFVertexingHF3Prong::CheckMCChannelDecay() const
{ 
  // Check the pdg codes of the daughters
  Bool_t checkCD = kFALSE;

  Int_t pdgCand = -1;
  Int_t pdgDaughter[3]={-1,-1,-1};
  if(fDecay==kDplustoKpipi){
    pdgCand=411;
    pdgDaughter[0]=321;
    pdgDaughter[1]=211;
    pdgDaughter[2]=211;
  }else if(fDecay==kDstoKKpi){
    pdgCand=431;
    pdgDaughter[0]=321;
    pdgDaughter[1]=321;
    pdgDaughter[2]=211;
  }else if(fDecay==kLctopKpi){
    AliError("LambdaC not yet implemented");
    return checkCD;
  }else{
    AliError("WRONG DECAY SETTING");
    return checkCD;    
  }


  Int_t daughter[3];

  Int_t nDau=fmcPartCandidate->GetNDaughters();
  Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0); 
  if(nDau==3){
    for(Int_t iDau=0; iDau<3; iDau++){
      Int_t ind = labelFirstDau+iDau;
      AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
      if(!part){
	AliError("Daughter particle not found in MC array");
	return checkCD;
      }
      daughter[iDau]=TMath::Abs(part->GetPdgCode());
    }
  }else if(nDau==2){
    Int_t nDauFound=0;
    for(Int_t iDau=0; iDau<2; iDau++){
      Int_t ind = labelFirstDau+iDau;
      AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
      if(!part){
	AliError("Daughter particle not found in MC array");
	return checkCD;
      }
      Int_t pdgCode=TMath::Abs(part->GetPdgCode());
      if(pdgCode==211 || pdgCode==321 || pdgCode==2212){
	if(nDauFound>=3) return checkCD;
	daughter[nDauFound]=pdgCode;
	nDauFound++;
      }else{
	Int_t nDauRes=part->GetNDaughters();
	if(nDauRes!=2) return checkCD;
	Int_t labelFirstDauRes = part->GetDaughter(0); 	
	for(Int_t iDauRes=0; iDauRes<2; iDauRes++){
	  Int_t indDR = labelFirstDauRes+iDauRes;
	  AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR));
	  if(!partDR){
	    AliError("Daughter particle not found in MC array");
	    return checkCD;
	  }
	  Int_t pdgCodeDR=TMath::Abs(partDR->GetPdgCode());
	  if(nDauFound>=3) return checkCD;
	  daughter[nDauFound]=pdgCodeDR;
	  nDauFound++;
	}
      }
    }
  }else{
    return checkCD;
  }
  for(Int_t iDau1=0; iDau1<3; iDau1++){
    for(Int_t iDau2=iDau1; iDau2<3; iDau2++){
      if(daughter[iDau1]<daughter[iDau2]){
	Int_t tmp=daughter[iDau1];
	daughter[iDau1]=daughter[iDau2];
	daughter[iDau2]=tmp;
      }
    }
  }
  for(Int_t iDau=0; iDau<3; iDau++){
    if(daughter[iDau]!=pdgDaughter[iDau]){
      AliDebug(2, "Wrong decay channel from MC, skipping!!");
      return checkCD;  
    }
  }
  
  checkCD = kTRUE;
  return checkCD;
  
}
Commit	Line	Data
043062fe	1	/**************************************************************************
	2	* Copyright(c) 2007-2011, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
7b45817b	16	/* $Id$ */
043062fe	17
	18	///////////////////////////////////////////////////////////////////
	19	// //
	20	// Class to compute variables for correction framework //
	21	// for 3-body decays of D mesons (D+, Ds, Lc) //
	22	// in bins of cut variables //
	23	// Origin: Francesco Prino (prino@to.infn.it) //
	24	// Renu Bala (bala@to.infn.it) //
	25	// //
	26	///////////////////////////////////////////////////////////////////
	27
	28	#include "AliAODMCParticle.h"
	29	#include "AliAODEvent.h"
	30	#include "TClonesArray.h"
	31	#include "AliCFVertexingHF.h"
	32	#include "AliESDtrack.h"
	33	#include "TDatabasePDG.h"
	34
	35	#include "AliCFVertexingHF3Prong.h"
	36	#include "AliCFContainer.h"
	37
	38	ClassImp(AliCFVertexingHF3Prong)
	39
	40
	41	//_________________________________________
	42	AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(Int_t decay):
	43	AliCFVertexingHF(),
	44	fDecay(decay)
	45	{
	46	//
	47	SetNProngs(3);
2bf2e62b	48
	49	fPtAccCut=new Float_t[fProngs];
	50	fEtaAccCut=new Float_t[fProngs];
	51	for(Int_t iP=0; iP<fProngs; iP++){
	52	fPtAccCut[iP]=0.1;
	53	fEtaAccCut[iP]=0.9;
	54	}
	55
043062fe	56	}
	57	//_________________________________________
	58	AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(TClonesArray *mcArray, UShort_t originDselection, Int_t decay):
	59	AliCFVertexingHF(mcArray, originDselection),
	60	fDecay(decay)
	61
	62	{
	63	//
	64	SetNProngs(3);
2bf2e62b	65	fPtAccCut=new Float_t[fProngs];
	66	fEtaAccCut=new Float_t[fProngs];
	67	for(Int_t iP=0; iP<fProngs; iP++){
	68	fPtAccCut[iP]=0.1;
	69	fEtaAccCut[iP]=0.9;
	70	}
043062fe	71	}
	72
	73
	74	//_____________________________________
	75	AliCFVertexingHF3Prong& AliCFVertexingHF3Prong::operator=(const AliCFVertexingHF3Prong& c){
	76	//
	77	if (this != &c) {
	78
	79	AliCFVertexingHF::operator=(c);
	80
	81	}
	82	return *this;
	83	}
	84
	85	//__________________________________________
	86	Bool_t AliCFVertexingHF3Prong::SetRecoCandidateParam(AliAODRecoDecayHF *recoCand){
	87	// Checks if candidate is signal and D meson is present in MC array
	88
	89	Bool_t bSignAssoc = kFALSE;
	90	fRecoCandidate = recoCand;
	91
	92	if (!fRecoCandidate) {
	93	AliError("fRecoCandidate not found, problem in assignement\n");
	94	return bSignAssoc;
	95	}
	96
	97	Int_t pdgCand = -1;
	98	Int_t pdgDaughter[3]={-1,-1,-1};
	99	if(fDecay==kDplustoKpipi){
	100	pdgCand=411;
	101	pdgDaughter[0]=321;
	102	pdgDaughter[1]=211;
	103	pdgDaughter[2]=211;
	104	}else if(fDecay==kDstoKKpi){
	105	pdgCand=431;
	106	pdgDaughter[0]=321;
	107	pdgDaughter[1]=321;
	108	pdgDaughter[2]=211;
	109	}else if(fDecay==kLctopKpi){
	110	AliError("LambdaC not yet implemented");
	111	return bSignAssoc;
	112	}else{
	113	AliError("WRONG DECAY SETTING");
	114	return bSignAssoc;
	115	}
	116
	117	Int_t mcLabel = fRecoCandidate->MatchToMC(pdgCand,fmcArray,3,pdgDaughter);
	118	if (mcLabel == -1) return bSignAssoc;
fbec9fa9	119
1f780958	120	if (fRecoCandidate->NumberOfFakeDaughters()>0){
	121	fFake = 0; // fake candidate
	122	if (fFakeSelection==1) return bSignAssoc;
	123	}
	124	if (fRecoCandidate->NumberOfFakeDaughters()==0){
	125	fFake = 2; // non-fake candidate
	126	if (fFakeSelection==2) return bSignAssoc;
	127	}
fbec9fa9	128
043062fe	129	SetMCLabel(mcLabel);
	130	fmcPartCandidate = dynamic_cast<AliAODMCParticle*>(fmcArray->At(fmcLabel));
	131
	132	if (!fmcPartCandidate){
	133	AliDebug(3,"No part candidate");
	134	return bSignAssoc;
	135	}
	136
	137	bSignAssoc = kTRUE;
	138	return bSignAssoc;
	139	}
	140
	141	//______________________________________________
	142	Bool_t AliCFVertexingHF3Prong::GetGeneratedValuesFromMCParticle(Double_t* vectorMC) {
	143	//
	144	// collecting all the necessary info from MC particle and fill vectorMC: 12 variables
	145	// pt_D
	146	// y_D
	147	// phi_D
	148	// ctau
	149	// cos point
	150	// pt_1
	151	// pt_2
	152	// pt_3
	153	// d0_1
	154	// d0_2
	155	// d0_3
	156	// zPrimVert
b7af2639	157	// centrality
043062fe	158
	159	Bool_t bGenValues = kFALSE;
	160
	161	Int_t pdgCand = -1;
	162	if(fDecay==kDplustoKpipi){
	163	pdgCand=411;
	164	}else if(fDecay==kDstoKKpi){
	165	pdgCand=431;
	166	}else if(fDecay==kLctopKpi){
	167	AliError("LambdaC not yet implemented");
	168	return bGenValues;
	169	}else{
	170	AliError("WRONG DECAY SETTING");
	171	return bGenValues;
	172	}
	173
	174	Double_t vertD[3] = {0,0,0}; // D origin
	175	fmcPartCandidate->XvYvZv(vertD); // cm
	176
	177	Int_t nprongs = 3;
	178	Int_t daughter[3];
	179	Short_t charge = fmcPartCandidate->Charge();
	180
	181	// order the daughters as LS,OS,LS, e.g. D+ -> pi+ K- pi+
	182	// the 2 LS are ordered so that in pos. 0 there is the one with lower label value
	183	Int_t index=0;
	184	Int_t nDauLS=0;
	185	Int_t nDauOS=0;
	186
	187
	188	Int_t nDau=fmcPartCandidate->GetNDaughters();
	189	Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0);
	190	if(nDau==3){
	191	for(Int_t iDau=0; iDau<3; iDau++){
	192	Int_t ind = labelFirstDau+iDau;
	193	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	194	if(!part){
	195	AliError("Daughter particle not found in MC array");
	196	return bGenValues;
	197	}
043062fe	198	Short_t signDau=part->Charge();
	199	if(signDau==charge){
	200	nDauLS++;
	201	daughter[index] = ind;
	202	index=2;
	203	}else{
	204	daughter[1] = ind;
	205	nDauOS++;
	206	}
	207	}
	208	}else if(nDau==2){
	209	for(Int_t iDau=0; iDau<2; iDau++){
	210	Int_t ind = labelFirstDau+iDau;
	211	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	212	if(!part){
	213	AliError("Daughter particle not found in MC array");
	214	return bGenValues;
	215	}
043062fe	216	Int_t pdgCode=TMath::Abs(part->GetPdgCode());
	217	if(pdgCode==211 \|\| pdgCode==321 \|\| pdgCode==2212){
	218	Short_t signDau=part->Charge();
	219	if(signDau==charge){
	220	nDauLS++;
	221	daughter[index] = ind;
	222	index=2;
	223	}else{
	224	daughter[1] = ind;
	225	nDauOS++;
	226	}
	227	}else{
	228	Int_t nDauRes=part->GetNDaughters();
	229	if(nDauRes!=2){
	230	AliError("Wrong resonant decay");
	231	return bGenValues;
	232	}
	233	Int_t labelFirstDauRes = part->GetDaughter(0);
	234	for(Int_t iDauRes=0; iDauRes<2; iDauRes++){
	235	Int_t indDR = labelFirstDauRes+iDauRes;
	236	AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR));
968b84b9	237	if(!partDR){
	238	AliError("Daughter particle not found in MC array");
	239	return bGenValues;
	240	}
043062fe	241	Short_t signDau=partDR->Charge();
	242	if(signDau==charge){
	243	nDauLS++;
	244	daughter[index] = ind;
	245	index=2;
	246	}else{
	247	daughter[1] = ind;
	248	nDauOS++;
	249	}
	250	}
	251	}
	252	}
	253	}else{
	254	AliError(Form("Wrong number of daughters %d",nDau));
	255	return bGenValues;
	256	}
	257
	258	if(nDauLS!=2 \|\| nDauOS!=1){
	259	AliError(Form("Wrong decay channel: LS and OS daughters not OK: %d %d",nDauLS,nDauOS));
	260	return bGenValues;
	261	}
	262	if(daughter[0]>daughter[2]){
	263	Int_t tmp=daughter[0];
	264	daughter[0]=daughter[2];
	265	daughter[2]=tmp;
	266	}
	267
	268	// getting the momentum from the daughters and decay vertex
	269	Double_t px[3],py[3],pz[3],pt[3];
	270	Double_t vertDec[3] = {0,0,0}; // decay vertex
	271	for(Int_t iDau=0; iDau<3; iDau++){
	272	AliAODMCParticle* part=dynamic_cast<AliAODMCParticle*>(fmcArray->At(daughter[iDau]));
968b84b9	273	if(!part){
	274	AliError("Daughter particle not found in MC array");
	275	return bGenValues;
	276	}
043062fe	277	px[iDau]=part->Px();
	278	py[iDau]=part->Py();
	279	pz[iDau]=part->Pz();
	280	pt[iDau]=part->Pt();
	281	if(iDau==0) part->XvYvZv(vertDec);
	282	}
	283
	284	Double_t d0[3] = {0.,0.,0.}; // dummy values!!!!
	285
	286	AliAODRecoDecayHF* decay = new AliAODRecoDecayHF(vertD,vertDec,nprongs,charge,px,py,pz,d0);
	287	Double_t cT = decay->Ct(pdgCand);
	288
	289	vectorMC[0] = fmcPartCandidate->Pt();
	290	vectorMC[1] = fmcPartCandidate->Y() ;
	291	vectorMC[2] = fmcPartCandidate->Phi();
	292	vectorMC[3] = cT*1.E4 ; // in micron
	293	vectorMC[4] = 1.01; // cos pointing angle, dummy value, meaningless in MC
	294	vectorMC[5] = pt[0];
	295	vectorMC[6] = pt[1];
	296	vectorMC[7] = pt[2];
	297	vectorMC[8] = 0.; // imppar0, dummy value, meaningless in MC
	298	vectorMC[9] = 0.; // imppar1, dummy value, meaningless in MC, in micron
	299	vectorMC[10] = 0.; // imppar2, dummy value, meaningless in MC, in micron
	300	vectorMC[11] = fzMCVertex; // z of reconstructed of primary vertex
b7af2639	301	vectorMC[12] = fCentValue; // reconstructed centrality value
1f780958	302	vectorMC[13] = 1.; // always filling with 1 at MC level
b7af2639	303
043062fe	304
	305	bGenValues = kTRUE;
	306	return bGenValues;
	307	}
	308
	309
	310	//____________________________________________
	311	Bool_t AliCFVertexingHF3Prong::GetRecoValuesFromCandidate(Double_t *vectorReco) const
	312	{
	313	// Fill vector (see above) with reconstructed quantities
	314	Bool_t bFillRecoValues=kFALSE;
	315
	316	Int_t pdgCand = -1;
	317	if(fDecay==kDplustoKpipi){
	318	pdgCand=411;
	319	}else if(fDecay==kDstoKKpi){
	320	pdgCand=431;
	321	}else if(fDecay==kLctopKpi){
	322	AliError("LambdaC not yet implemented");
	323	return bFillRecoValues;
	324	}else{
	325	AliError("WRONG DECAY SETTING");
	326	return bFillRecoValues;
	327	}
	328
	329	AliAODRecoDecayHF3Prong decay3 = (AliAODRecoDecayHF3Prong)fRecoCandidate;
	330	Short_t charge=decay3->Charge();
	331	Double_t rapidity=decay3->Y(pdgCand);
	332	Double_t cT=decay3->Ct(pdgCand);
	333	Double_t pt = decay3->Pt();
	334	Double_t cosPointingAngle = decay3->CosPointingAngle();
	335	Double_t phi = decay3->Phi();
	336
	337	Int_t daughtSorted[3];
	338	Int_t tmpIndex=0;
	339	Int_t nDauLS=0;
	340	Int_t nDauOS=0;
	341	for(Int_t iDau=0; iDau<3; iDau++){
	342	AliAODTrack trk = (AliAODTrack)decay3->GetDaughter(iDau);
b7af2639	343	Int_t label = TMath::Abs(trk->GetLabel());
043062fe	344	Short_t chargedau=trk->Charge();
	345	if(chargedau==charge){
	346	daughtSorted[tmpIndex]=label;
	347	tmpIndex=2;
	348	nDauLS++;
	349	}else{
	350	daughtSorted[1]=label;
	351	nDauOS++;
	352	}
	353	}
	354
	355	if(nDauLS!=2 \|\| nDauOS!=1){
	356	AliError("Wrong decay channel: number of OS and LS tracks not OK");
	357	return bFillRecoValues;
	358	}
	359
	360	if(daughtSorted[0]>daughtSorted[2]){
	361	Int_t tmp=daughtSorted[0];
	362	daughtSorted[0]=daughtSorted[2];
	363	daughtSorted[2]=tmp;
	364	}
	365
	366
	367	vectorReco[0] = pt;
	368	vectorReco[1] = rapidity;
	369	vectorReco[2] = phi;
	370	vectorReco[3] = cT*1.E4; // in micron
	371	vectorReco[4] = cosPointingAngle; // in micron
	372	vectorReco[5] = decay3->PtProng(daughtSorted[0]);
	373	vectorReco[6] = decay3->PtProng(daughtSorted[1]);
	374	vectorReco[7] = decay3->PtProng(daughtSorted[2]);
	375	vectorReco[8] = decay3->Getd0Prong(daughtSorted[0]);
	376	vectorReco[9] = decay3->Getd0Prong(daughtSorted[1]);
	377	vectorReco[10] = decay3->Getd0Prong(daughtSorted[2]);
	378	vectorReco[11] = fzPrimVertex; // z of reconstructed of primary vertex
b7af2639	379	vectorReco[12] = fCentValue; //reconstructed centrality value
1f780958	380	vectorReco[13] = fFake; // whether the reconstructed candidate was a fake (fFake = 0) or not (fFake = 2)
b7af2639	381
b7af2639	382
043062fe	383	bFillRecoValues = kTRUE;
	384	return bFillRecoValues;
	385	}
	386
	387
	388	//_____________________________________________________________
	389	Bool_t AliCFVertexingHF3Prong::CheckMCChannelDecay() const
	390	{
	391	// Check the pdg codes of the daughters
	392	Bool_t checkCD = kFALSE;
	393
	394	Int_t pdgCand = -1;
	395	Int_t pdgDaughter[3]={-1,-1,-1};
	396	if(fDecay==kDplustoKpipi){
	397	pdgCand=411;
	398	pdgDaughter[0]=321;
	399	pdgDaughter[1]=211;
	400	pdgDaughter[2]=211;
	401	}else if(fDecay==kDstoKKpi){
	402	pdgCand=431;
	403	pdgDaughter[0]=321;
	404	pdgDaughter[1]=321;
	405	pdgDaughter[2]=211;
	406	}else if(fDecay==kLctopKpi){
	407	AliError("LambdaC not yet implemented");
	408	return checkCD;
	409	}else{
	410	AliError("WRONG DECAY SETTING");
	411	return checkCD;
	412	}
	413
	414
	415	Int_t daughter[3];
	416
	417	Int_t nDau=fmcPartCandidate->GetNDaughters();
	418	Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0);
	419	if(nDau==3){
	420	for(Int_t iDau=0; iDau<3; iDau++){
	421	Int_t ind = labelFirstDau+iDau;
	422	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	423	if(!part){
	424	AliError("Daughter particle not found in MC array");
	425	return checkCD;
	426	}
043062fe	427	daughter[iDau]=TMath::Abs(part->GetPdgCode());
	428	}
	429	}else if(nDau==2){
	430	Int_t nDauFound=0;
	431	for(Int_t iDau=0; iDau<2; iDau++){
	432	Int_t ind = labelFirstDau+iDau;
	433	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	434	if(!part){
	435	AliError("Daughter particle not found in MC array");
	436	return checkCD;
	437	}
043062fe	438	Int_t pdgCode=TMath::Abs(part->GetPdgCode());
	439	if(pdgCode==211 \|\| pdgCode==321 \|\| pdgCode==2212){
	440	if(nDauFound>=3) return checkCD;
	441	daughter[nDauFound]=pdgCode;
	442	nDauFound++;
	443	}else{
	444	Int_t nDauRes=part->GetNDaughters();
	445	if(nDauRes!=2) return checkCD;
	446	Int_t labelFirstDauRes = part->GetDaughter(0);
	447	for(Int_t iDauRes=0; iDauRes<2; iDauRes++){
	448	Int_t indDR = labelFirstDauRes+iDauRes;
	449	AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR));
968b84b9	450	if(!partDR){
	451	AliError("Daughter particle not found in MC array");
	452	return checkCD;
	453	}
043062fe	454	Int_t pdgCodeDR=TMath::Abs(partDR->GetPdgCode());
	455	if(nDauFound>=3) return checkCD;
	456	daughter[nDauFound]=pdgCodeDR;
	457	nDauFound++;
	458	}
	459	}
	460	}
	461	}else{
	462	return checkCD;
	463	}
	464	for(Int_t iDau1=0; iDau1<3; iDau1++){
	465	for(Int_t iDau2=iDau1; iDau2<3; iDau2++){
	466	if(daughter[iDau1]<daughter[iDau2]){
	467	Int_t tmp=daughter[iDau1];
	468	daughter[iDau1]=daughter[iDau2];
	469	daughter[iDau2]=tmp;
	470	}
	471	}
	472	}
	473	for(Int_t iDau=0; iDau<3; iDau++){
	474	if(daughter[iDau]!=pdgDaughter[iDau]){
	475	AliDebug(2, "Wrong decay channel from MC, skipping!!");
	476	return checkCD;
	477	}
	478	}
	479
	480	checkCD = kTRUE;
	481	return checkCD;
	482
	483	}