[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);
}
//_________________________________________
AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(TClonesArray *mcArray, UShort_t originDselection, Int_t decay):
  AliCFVertexingHF(mcArray, originDselection),
  fDecay(decay)
 
{
  //
  SetNProngs(3);
}


//_____________________________________
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;
  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 


  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


  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);
	48	}
	49	//_________________________________________
	50	AliCFVertexingHF3Prong::AliCFVertexingHF3Prong(TClonesArray *mcArray, UShort_t originDselection, Int_t decay):
	51	AliCFVertexingHF(mcArray, originDselection),
	52	fDecay(decay)
	53
	54	{
	55	//
	56	SetNProngs(3);
	57	}
	58
	59
	60	//_____________________________________
	61	AliCFVertexingHF3Prong& AliCFVertexingHF3Prong::operator=(const AliCFVertexingHF3Prong& c){
	62	//
	63	if (this != &c) {
	64
	65	AliCFVertexingHF::operator=(c);
	66
	67	}
	68	return *this;
	69	}
	70
	71	//__________________________________________
	72	Bool_t AliCFVertexingHF3Prong::SetRecoCandidateParam(AliAODRecoDecayHF *recoCand){
	73	// Checks if candidate is signal and D meson is present in MC array
	74
	75	Bool_t bSignAssoc = kFALSE;
	76	fRecoCandidate = recoCand;
	77
	78	if (!fRecoCandidate) {
	79	AliError("fRecoCandidate not found, problem in assignement\n");
	80	return bSignAssoc;
81	}
82
83	Int_t pdgCand = -1;
84	Int_t pdgDaughter[3]={-1,-1,-1};
85	if(fDecay==kDplustoKpipi){
86	pdgCand=411;
87	pdgDaughter[0]=321;
88	pdgDaughter[1]=211;
89	pdgDaughter[2]=211;
90	}else if(fDecay==kDstoKKpi){
91	pdgCand=431;
92	pdgDaughter[0]=321;
93	pdgDaughter[1]=321;
94	pdgDaughter[2]=211;
95	}else if(fDecay==kLctopKpi){
96	AliError("LambdaC not yet implemented");
97	return bSignAssoc;
98	}else{
99	AliError("WRONG DECAY SETTING");
100	return bSignAssoc;
101	}
102
103	Int_t mcLabel = fRecoCandidate->MatchToMC(pdgCand,fmcArray,3,pdgDaughter);
104	if (mcLabel == -1) return bSignAssoc;
105	SetMCLabel(mcLabel);
106	fmcPartCandidate = dynamic_cast<AliAODMCParticle*>(fmcArray->At(fmcLabel));
107
108	if (!fmcPartCandidate){
109	AliDebug(3,"No part candidate");
110	return bSignAssoc;
111	}
112
113	bSignAssoc = kTRUE;
114	return bSignAssoc;
115	}
116
117	//______________________________________________
118	Bool_t AliCFVertexingHF3Prong::GetGeneratedValuesFromMCParticle(Double_t* vectorMC) {
119	//
120	// collecting all the necessary info from MC particle and fill vectorMC: 12 variables
121	// pt_D
122	// y_D
123	// phi_D
124	// ctau
125	// cos point
126	// pt_1
127	// pt_2
128	// pt_3
129	// d0_1
130	// d0_2
131	// d0_3
132	// zPrimVert
b7af2639	133	// centrality
043062fe	134
	135	Bool_t bGenValues = kFALSE;
	136
	137	Int_t pdgCand = -1;
	138	if(fDecay==kDplustoKpipi){
	139	pdgCand=411;
	140	}else if(fDecay==kDstoKKpi){
	141	pdgCand=431;
	142	}else if(fDecay==kLctopKpi){
	143	AliError("LambdaC not yet implemented");
	144	return bGenValues;
	145	}else{
	146	AliError("WRONG DECAY SETTING");
	147	return bGenValues;
	148	}
	149
	150	Double_t vertD[3] = {0,0,0}; // D origin
	151	fmcPartCandidate->XvYvZv(vertD); // cm
	152
	153	Int_t nprongs = 3;
	154	Int_t daughter[3];
	155	Short_t charge = fmcPartCandidate->Charge();
	156
	157	// order the daughters as LS,OS,LS, e.g. D+ -> pi+ K- pi+
	158	// the 2 LS are ordered so that in pos. 0 there is the one with lower label value
	159	Int_t index=0;
	160	Int_t nDauLS=0;
	161	Int_t nDauOS=0;
	162
	163
	164	Int_t nDau=fmcPartCandidate->GetNDaughters();
	165	Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0);
	166	if(nDau==3){
	167	for(Int_t iDau=0; iDau<3; iDau++){
	168	Int_t ind = labelFirstDau+iDau;
	169	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	170	if(!part){
	171	AliError("Daughter particle not found in MC array");
	172	return bGenValues;
	173	}
043062fe	174	Short_t signDau=part->Charge();
	175	if(signDau==charge){
	176	nDauLS++;
	177	daughter[index] = ind;
	178	index=2;
	179	}else{
	180	daughter[1] = ind;
	181	nDauOS++;
	182	}
	183	}
	184	}else if(nDau==2){
	185	for(Int_t iDau=0; iDau<2; iDau++){
	186	Int_t ind = labelFirstDau+iDau;
	187	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	188	if(!part){
	189	AliError("Daughter particle not found in MC array");
	190	return bGenValues;
	191	}
043062fe	192	Int_t pdgCode=TMath::Abs(part->GetPdgCode());
	193	if(pdgCode==211 \|\| pdgCode==321 \|\| pdgCode==2212){
	194	Short_t signDau=part->Charge();
	195	if(signDau==charge){
	196	nDauLS++;
	197	daughter[index] = ind;
	198	index=2;
	199	}else{
	200	daughter[1] = ind;
	201	nDauOS++;
	202	}
	203	}else{
	204	Int_t nDauRes=part->GetNDaughters();
	205	if(nDauRes!=2){
	206	AliError("Wrong resonant decay");
	207	return bGenValues;
	208	}
	209	Int_t labelFirstDauRes = part->GetDaughter(0);
	210	for(Int_t iDauRes=0; iDauRes<2; iDauRes++){
	211	Int_t indDR = labelFirstDauRes+iDauRes;
	212	AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR));
968b84b9	213	if(!partDR){
	214	AliError("Daughter particle not found in MC array");
	215	return bGenValues;
	216	}
043062fe	217	Short_t signDau=partDR->Charge();
	218	if(signDau==charge){
	219	nDauLS++;
	220	daughter[index] = ind;
	221	index=2;
	222	}else{
	223	daughter[1] = ind;
	224	nDauOS++;
	225	}
	226	}
	227	}
	228	}
	229	}else{
	230	AliError(Form("Wrong number of daughters %d",nDau));
	231	return bGenValues;
	232	}
	233
	234	if(nDauLS!=2 \|\| nDauOS!=1){
	235	AliError(Form("Wrong decay channel: LS and OS daughters not OK: %d %d",nDauLS,nDauOS));
	236	return bGenValues;
	237	}
	238	if(daughter[0]>daughter[2]){
	239	Int_t tmp=daughter[0];
	240	daughter[0]=daughter[2];
	241	daughter[2]=tmp;
	242	}
	243
	244	// getting the momentum from the daughters and decay vertex
	245	Double_t px[3],py[3],pz[3],pt[3];
	246	Double_t vertDec[3] = {0,0,0}; // decay vertex
	247	for(Int_t iDau=0; iDau<3; iDau++){
	248	AliAODMCParticle* part=dynamic_cast<AliAODMCParticle*>(fmcArray->At(daughter[iDau]));
968b84b9	249	if(!part){
	250	AliError("Daughter particle not found in MC array");
	251	return bGenValues;
	252	}
043062fe	253	px[iDau]=part->Px();
	254	py[iDau]=part->Py();
	255	pz[iDau]=part->Pz();
	256	pt[iDau]=part->Pt();
	257	if(iDau==0) part->XvYvZv(vertDec);
	258	}
	259
	260	Double_t d0[3] = {0.,0.,0.}; // dummy values!!!!
	261
	262	AliAODRecoDecayHF* decay = new AliAODRecoDecayHF(vertD,vertDec,nprongs,charge,px,py,pz,d0);
	263	Double_t cT = decay->Ct(pdgCand);
	264
	265	vectorMC[0] = fmcPartCandidate->Pt();
	266	vectorMC[1] = fmcPartCandidate->Y() ;
	267	vectorMC[2] = fmcPartCandidate->Phi();
	268	vectorMC[3] = cT*1.E4 ; // in micron
	269	vectorMC[4] = 1.01; // cos pointing angle, dummy value, meaningless in MC
	270	vectorMC[5] = pt[0];
	271	vectorMC[6] = pt[1];
	272	vectorMC[7] = pt[2];
	273	vectorMC[8] = 0.; // imppar0, dummy value, meaningless in MC
	274	vectorMC[9] = 0.; // imppar1, dummy value, meaningless in MC, in micron
	275	vectorMC[10] = 0.; // imppar2, dummy value, meaningless in MC, in micron
	276	vectorMC[11] = fzMCVertex; // z of reconstructed of primary vertex
b7af2639	277	vectorMC[12] = fCentValue; // reconstructed centrality value
b7af2639	278
043062fe	279
	280	bGenValues = kTRUE;
	281	return bGenValues;
	282	}
	283
	284
	285	//____________________________________________
	286	Bool_t AliCFVertexingHF3Prong::GetRecoValuesFromCandidate(Double_t *vectorReco) const
	287	{
	288	// Fill vector (see above) with reconstructed quantities
	289	Bool_t bFillRecoValues=kFALSE;
	290
	291	Int_t pdgCand = -1;
	292	if(fDecay==kDplustoKpipi){
	293	pdgCand=411;
	294	}else if(fDecay==kDstoKKpi){
	295	pdgCand=431;
	296	}else if(fDecay==kLctopKpi){
	297	AliError("LambdaC not yet implemented");
	298	return bFillRecoValues;
	299	}else{
	300	AliError("WRONG DECAY SETTING");
	301	return bFillRecoValues;
	302	}
	303
	304	AliAODRecoDecayHF3Prong decay3 = (AliAODRecoDecayHF3Prong)fRecoCandidate;
	305	Short_t charge=decay3->Charge();
	306	Double_t rapidity=decay3->Y(pdgCand);
	307	Double_t cT=decay3->Ct(pdgCand);
	308	Double_t pt = decay3->Pt();
	309	Double_t cosPointingAngle = decay3->CosPointingAngle();
	310	Double_t phi = decay3->Phi();
	311
	312	Int_t daughtSorted[3];
	313	Int_t tmpIndex=0;
	314	Int_t nDauLS=0;
	315	Int_t nDauOS=0;
	316	for(Int_t iDau=0; iDau<3; iDau++){
	317	AliAODTrack trk = (AliAODTrack)decay3->GetDaughter(iDau);
b7af2639	318	Int_t label = TMath::Abs(trk->GetLabel());
043062fe	319	Short_t chargedau=trk->Charge();
	320	if(chargedau==charge){
	321	daughtSorted[tmpIndex]=label;
	322	tmpIndex=2;
	323	nDauLS++;
	324	}else{
	325	daughtSorted[1]=label;
	326	nDauOS++;
	327	}
	328	}
	329
	330	if(nDauLS!=2 \|\| nDauOS!=1){
	331	AliError("Wrong decay channel: number of OS and LS tracks not OK");
	332	return bFillRecoValues;
	333	}
	334
	335	if(daughtSorted[0]>daughtSorted[2]){
	336	Int_t tmp=daughtSorted[0];
	337	daughtSorted[0]=daughtSorted[2];
	338	daughtSorted[2]=tmp;
	339	}
	340
	341
	342	vectorReco[0] = pt;
	343	vectorReco[1] = rapidity;
	344	vectorReco[2] = phi;
	345	vectorReco[3] = cT*1.E4; // in micron
	346	vectorReco[4] = cosPointingAngle; // in micron
	347	vectorReco[5] = decay3->PtProng(daughtSorted[0]);
	348	vectorReco[6] = decay3->PtProng(daughtSorted[1]);
	349	vectorReco[7] = decay3->PtProng(daughtSorted[2]);
	350	vectorReco[8] = decay3->Getd0Prong(daughtSorted[0]);
	351	vectorReco[9] = decay3->Getd0Prong(daughtSorted[1]);
	352	vectorReco[10] = decay3->Getd0Prong(daughtSorted[2]);
	353	vectorReco[11] = fzPrimVertex; // z of reconstructed of primary vertex
b7af2639	354	vectorReco[12] = fCentValue; //reconstructed centrality value
	355
	356
043062fe	357	bFillRecoValues = kTRUE;
	358	return bFillRecoValues;
	359	}
	360
	361
	362	//_____________________________________________________________
	363	Bool_t AliCFVertexingHF3Prong::CheckMCChannelDecay() const
	364	{
	365	// Check the pdg codes of the daughters
	366	Bool_t checkCD = kFALSE;
	367
	368	Int_t pdgCand = -1;
	369	Int_t pdgDaughter[3]={-1,-1,-1};
	370	if(fDecay==kDplustoKpipi){
	371	pdgCand=411;
	372	pdgDaughter[0]=321;
	373	pdgDaughter[1]=211;
	374	pdgDaughter[2]=211;
	375	}else if(fDecay==kDstoKKpi){
	376	pdgCand=431;
	377	pdgDaughter[0]=321;
	378	pdgDaughter[1]=321;
	379	pdgDaughter[2]=211;
	380	}else if(fDecay==kLctopKpi){
	381	AliError("LambdaC not yet implemented");
	382	return checkCD;
	383	}else{
	384	AliError("WRONG DECAY SETTING");
	385	return checkCD;
	386	}
	387
	388
	389	Int_t daughter[3];
	390
	391	Int_t nDau=fmcPartCandidate->GetNDaughters();
	392	Int_t labelFirstDau = fmcPartCandidate->GetDaughter(0);
	393	if(nDau==3){
	394	for(Int_t iDau=0; iDau<3; iDau++){
	395	Int_t ind = labelFirstDau+iDau;
	396	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	397	if(!part){
	398	AliError("Daughter particle not found in MC array");
	399	return checkCD;
	400	}
043062fe	401	daughter[iDau]=TMath::Abs(part->GetPdgCode());
	402	}
	403	}else if(nDau==2){
	404	Int_t nDauFound=0;
	405	for(Int_t iDau=0; iDau<2; iDau++){
	406	Int_t ind = labelFirstDau+iDau;
	407	AliAODMCParticle* part = dynamic_cast<AliAODMCParticle*>(fmcArray->At(ind));
968b84b9	408	if(!part){
	409	AliError("Daughter particle not found in MC array");
	410	return checkCD;
	411	}
043062fe	412	Int_t pdgCode=TMath::Abs(part->GetPdgCode());
	413	if(pdgCode==211 \|\| pdgCode==321 \|\| pdgCode==2212){
	414	if(nDauFound>=3) return checkCD;
	415	daughter[nDauFound]=pdgCode;
	416	nDauFound++;
	417	}else{
	418	Int_t nDauRes=part->GetNDaughters();
	419	if(nDauRes!=2) return checkCD;
	420	Int_t labelFirstDauRes = part->GetDaughter(0);
	421	for(Int_t iDauRes=0; iDauRes<2; iDauRes++){
	422	Int_t indDR = labelFirstDauRes+iDauRes;
	423	AliAODMCParticle* partDR = dynamic_cast<AliAODMCParticle*>(fmcArray->At(indDR));
968b84b9	424	if(!partDR){
	425	AliError("Daughter particle not found in MC array");
	426	return checkCD;
	427	}
043062fe	428	Int_t pdgCodeDR=TMath::Abs(partDR->GetPdgCode());
	429	if(nDauFound>=3) return checkCD;
	430	daughter[nDauFound]=pdgCodeDR;
	431	nDauFound++;
	432	}
	433	}
	434	}
	435	}else{
	436	return checkCD;
	437	}
	438	for(Int_t iDau1=0; iDau1<3; iDau1++){
	439	for(Int_t iDau2=iDau1; iDau2<3; iDau2++){
	440	if(daughter[iDau1]<daughter[iDau2]){
	441	Int_t tmp=daughter[iDau1];
	442	daughter[iDau1]=daughter[iDau2];
	443	daughter[iDau2]=tmp;
	444	}
	445	}
	446	}
	447	for(Int_t iDau=0; iDau<3; iDau++){
	448	if(daughter[iDau]!=pdgDaughter[iDau]){
	449	AliDebug(2, "Wrong decay channel from MC, skipping!!");
	450	return checkCD;
	451	}
	452	}
	453
	454	checkCD = kTRUE;
	455	return checkCD;
	456
	457	}
	458