[u/mrichter/AliRoot.git] / PWGHF / hfe / AliHFEpriVtx.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, 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.                  *
 **************************************************************************/
//
// QA class of primary vertex study for Heavy Flavor electrons
// this has functionality to reject electrons from primary vertex
// and check primary vertex characteristics
//  
// Authors:
//   MinJung Kweon <minjung@physi.uni-heidelberg.de>
//


#include <TH2F.h>
#include <TParticle.h>

#include "AliESDEvent.h"
#include <AliESDtrack.h>
#include <AliMCEvent.h>

#include <AliLog.h>
#include <AliKFParticle.h>
#include <AliKFVertex.h>

#include "AliHFEpriVtx.h"


ClassImp(AliHFEpriVtx)

//_______________________________________________________________________________________________
AliHFEpriVtx::AliHFEpriVtx():
        fESD1(0x0)
        ,fMCEvent(0x0)
        ,fNtrackswoPid(0)
        ,fHNtrackswoPid(0x0)
        ,fNESDprimVtxContributor(0x0)
        ,fNESDprimVtxIndices(0x0)
        ,fDiffDCAvsPt(0x0)
        ,fDiffDCAvsNt(0x0)
        ,fNsectrk2prim(0)
        ,fPVxRe(-999.)
        ,fPVyRe(-999.)
        ,fPVzRe(-999.)
{ 
        //
        // Default constructor
        //

        Init();

}

//_______________________________________________________________________________________________
AliHFEpriVtx::AliHFEpriVtx(const AliHFEpriVtx &p):
         TObject(p)
        ,fESD1(0x0)
        ,fMCEvent(0x0)
        ,fNtrackswoPid(p.fNtrackswoPid)
        ,fHNtrackswoPid(0x0)
        ,fNESDprimVtxContributor(0x0)
        ,fNESDprimVtxIndices(0x0)
        ,fDiffDCAvsPt(0x0)
        ,fDiffDCAvsNt(0x0)
        ,fNsectrk2prim(p.fNsectrk2prim)
        ,fPVxRe(p.fPVxRe)
        ,fPVyRe(p.fPVyRe)
        ,fPVzRe(p.fPVzRe)
{
        //
        // Copy constructor
        //
}

//_______________________________________________________________________________________________
AliHFEpriVtx&
AliHFEpriVtx::operator=(const AliHFEpriVtx &)
{
        //
        // Assignment operator
        //

        AliInfo("Not yet implemented.");
        return *this;
}

//_______________________________________________________________________________________________
AliHFEpriVtx::~AliHFEpriVtx()
{
        //
        // Destructor
        //

        AliInfo("Analysis Done.");
}

//__________________________________________
void AliHFEpriVtx::Init()
{
        //
        // initialize counters
        //

        fNtrackswoPid = 0;
        for (int i=0; i<10; i++){       
                fPrimVtx[i].fNtrackCount = 0 ;
                fPrimVtx[i].fNprimVtxContributorCount = 0 ;
        }
}

//_______________________________________________________________________________________________
void AliHFEpriVtx::CreateHistograms(TString hnopt)
{ 
        //
        // create histograms
        //

        fkSourceLabel[kAll]="all";
        fkSourceLabel[kDirectCharm]="directCharm";
        fkSourceLabel[kDirectBeauty]="directBeauty";
        fkSourceLabel[kBeautyCharm]="beauty2charm";
        fkSourceLabel[kGamma]="gamma";
        fkSourceLabel[kPi0]="pi0";
        fkSourceLabel[kElse]="others";
        fkSourceLabel[kBeautyGamma]="beauty22gamma";
        fkSourceLabel[kBeautyPi0]="beauty22pi0";
        fkSourceLabel[kBeautyElse]="beauty22others";


        TString hname;
        for (Int_t isource = 0; isource < 10; isource++ ){

           hname=hnopt+"ntracks_"+fkSourceLabel[isource];
           fPrimVtx[isource].fNtracks = new TH1F(hname,hname,50,0,50);
           hname=hnopt+"nPrimVtxContributor_"+fkSourceLabel[isource];
           fPrimVtx[isource].fNprimVtxContributor = new TH1F(hname,hname,100,0,100);
           hname=hnopt+"PtElec_"+fkSourceLabel[isource];
           fPrimVtx[isource].fPtElec = new TH1F(hname,hname,250,0,50);
           hname=hnopt+"PtElecContributor_"+fkSourceLabel[isource];
           fPrimVtx[isource].fPtElecContributor = new TH1F(hname,hname,250,0,50);

        }

        hname=hnopt+"ntrackswopid";
        fHNtrackswoPid = new TH1F(hname,hname,50,0,50);
        hname=hnopt+"nESDprimVtxContributor";
        fNESDprimVtxContributor = new TH1I(hname,hname,100,0,100);
        hname=hnopt+"nESDprimVtxIndices";
        fNESDprimVtxIndices= new TH1I(hname,hname,100,0,100);
        hname=hnopt+"diffDCAvsPt";
        fDiffDCAvsPt = new TH2F(hname,hname,250,0,50,500,0,1);
        hname=hnopt+"diffDCAvsNt";
        fDiffDCAvsNt = new TH2F(hname,hname,100,0,100,500,0,1);

}

//_______________________________________________________________________________________________
void AliHFEpriVtx::CountNtracks(Int_t sourcePart, Int_t recpid, Double_t recprob)
{
        //
        // count number of tracks passed certain cuts
        //

        fNtrackswoPid++;

        if (!recpid && recprob>0.5)     
        fPrimVtx[kAll].fNtrackCount++;
        if(sourcePart<0) return;
        fPrimVtx[sourcePart].fNtrackCount++;

}

//_______________________________________________________________________________________________
void AliHFEpriVtx::FillNtracks()
{
        //
        // count number of tracks passed certain cuts
        //

        fHNtrackswoPid->Fill(fNtrackswoPid);
        for (int i=0; i<10; i++){
          fPrimVtx[i].fNtracks->Fill(fPrimVtx[i].fNtrackCount);
        }

}

//_______________________________________________________________________________________________
Int_t AliHFEpriVtx::GetMCPID(AliESDtrack const *track)
{
        //
        // get MC pid
        //

	AliMCParticle *mctrack = NULL;
	if(!(mctrack = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(TMath::Abs(track->GetLabel()))))) return 0; 
	TParticle *mcpart = mctrack->Particle();

        if ( !mcpart ) return 0;
        Int_t pdgCode = mcpart->GetPdgCode();

        return pdgCode;
}

//_______________________________________________________________________________________________
void AliHFEpriVtx::GetNPriVxtContributor() 
{
        //
        // count number of primary vertex contributor
        //

        const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
        fNESDprimVtxContributor->Fill(primvtx->GetNContributors());
        fNESDprimVtxIndices->Fill(primvtx->GetNIndices());
}

//_______________________________________________________________________________________________
void AliHFEpriVtx::CountPriVxtElecContributor(AliESDtrack *ESDelectron, Int_t sourcePart, Int_t recpid, Double_t recprob) 
{
        //
        // count number of electrons contributing to the primary vertex
        //


        if (recpid || recprob<0.5) return;

        // get track id of our selected electron
        Int_t elecTrkID = ESDelectron->GetID();

	AliMCParticle *mctrack = NULL;
	if(!(mctrack = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(TMath::Abs(ESDelectron->GetLabel()))))) return; 
	TParticle *mcpart = mctrack->Particle();


        if(!mcpart){
          AliDebug(1, "no mc particle, return\n");
          return;
        }

        AliKFParticle::SetField(fESD1->GetMagneticField());
        AliKFParticle kfElectron(*ESDelectron,11);
 
        // prepare kfprimary vertex
        AliKFVertex kfESDprimary;

        // Reconstructed Primary Vertex (with ESD tracks)
        const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
//         Int_t nt = primvtx->GetNContributors();
        Int_t n=primvtx->GetNIndices();

        if (n>0 && primvtx->GetStatus()){

                kfESDprimary = AliKFVertex(*primvtx);
                Double_t dcaBFrmElec = kfElectron.GetDistanceFromVertexXY(kfESDprimary);

                UShort_t *priIndex = primvtx->GetIndices();

                fPrimVtx[kAll].fPtElec->Fill(mcpart->Pt());
                if(sourcePart>=0) fPrimVtx[sourcePart].fPtElec->Fill(mcpart->Pt());

                for (Int_t i=0;i<n;i++){

                        Int_t idx = Int_t(priIndex[i]);
                        if (idx == elecTrkID){
                                fPrimVtx[kAll].fNprimVtxContributorCount++;
                                fPrimVtx[kAll].fPtElecContributor->Fill(mcpart->Pt());
                                if(sourcePart<0) continue;
                                fPrimVtx[sourcePart].fNprimVtxContributorCount++;
                                fPrimVtx[sourcePart].fPtElecContributor->Fill(mcpart->Pt());

                                kfESDprimary -= kfElectron;
                                Double_t dcaAFrmElec = kfElectron.GetDistanceFromVertexXY(kfESDprimary);
                                fDiffDCAvsPt->Fill(mcpart->Pt(),dcaBFrmElec-dcaAFrmElec);
                                fDiffDCAvsNt->Fill(n,dcaBFrmElec-dcaAFrmElec);
                        }
                } 
        }  

}

//_______________________________________________________________________________________________
void AliHFEpriVtx::FillNprimVtxContributor() const
{
        //
        // Fill histogram with number of electrons contributing to the primary vertex
        //

        for (int i=0; i<10; i++){
          fPrimVtx[i].fNprimVtxContributor->Fill(fPrimVtx[i].fNprimVtxContributorCount);
        }

}

//_______________________________________________________________________________________________
Double_t AliHFEpriVtx::GetDistanceFromRecalVertexXY(const AliESDtrack * const ESDelectron) 
{
        //
        // return recalculated DCA after removing input track from the primary vertex
        //

        // get track id of our selected electron
        Int_t elecTrkID = ESDelectron->GetID();

        AliKFParticle::SetField(fESD1->GetMagneticField());
        AliKFParticle kfElectron(*ESDelectron,11);
 
        // prepare kfprimary vertex
        AliKFVertex kfESDprimary;

        // Reconstructed Primary Vertex (with ESD tracks)
        const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
        Int_t n=primvtx->GetNIndices();

        if (n>0 && primvtx->GetStatus()){

                kfESDprimary = AliKFVertex(*primvtx);
                UShort_t *priIndex = primvtx->GetIndices();

                for (Int_t i=0;i<n;i++){

                        Int_t idx = Int_t(priIndex[i]);
                        if (idx == elecTrkID){
                                kfESDprimary -= kfElectron;
                                Double_t dcaAFrmElec = kfElectron.GetDistanceFromVertexXY(kfESDprimary);

                                return dcaAFrmElec;
                        }
                } 
        }  
	      return -1;

}

void AliHFEpriVtx::RecalcPrimvtx(Int_t nkftrk, const Int_t * const trkid, const AliKFParticle * const kftrk)
{
        //
        // recalculate primary vertex after removing the input track
        //

        const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();

        AliKFVertex kfESDprimary;
        Int_t n = primvtx->GetNIndices();
        fNsectrk2prim = 0;
        fPVxRe = -999.;
        fPVyRe = -999.;
        fPVyRe = -999.;

        if (n>0 && primvtx->GetStatus()){
          kfESDprimary = AliKFVertex(*primvtx);
          UShort_t *priIndex = primvtx->GetIndices();
          for (Int_t j=0; j<nkftrk; j++){
            for (Int_t i=0;i<n;i++){
              Int_t idx = Int_t(priIndex[i]);
              if (idx == trkid[j]){
                kfESDprimary -= kftrk[j];
                fNsectrk2prim++;
              }
            }
          }
        }

        fPVxRe = kfESDprimary.GetX();
        fPVyRe = kfESDprimary.GetY();
        fPVzRe = kfESDprimary.GetZ();

}


//_______________________________________________________________________________________________
void AliHFEpriVtx::RecalcPrimvtx(const AliESDtrack * const ESDelectron)
{
        //
        // recalculate primary vertex after removing the input track
        //

        // get track id of our selected electron
        Int_t elecTrkID = ESDelectron->GetID();

        AliKFParticle::SetField(fESD1->GetMagneticField());
        AliKFParticle kfElectron(*ESDelectron,11);

        const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();

        AliKFVertex kfESDprimary;
        Int_t n = primvtx->GetNIndices();
        fPVxRe = -999.;
        fPVyRe = -999.;
        fPVyRe = -999.;
        
        if (n>0 && primvtx->GetStatus()){
          kfESDprimary = AliKFVertex(*primvtx);
          UShort_t *priIndex = primvtx->GetIndices();
          for (Int_t i=0;i<n;i++){
            Int_t idx = Int_t(priIndex[i]);
            if (idx == elecTrkID){
              kfESDprimary -= kfElectron;
            }
          }
        }     
        
        fPVxRe = kfESDprimary.GetX();
        fPVyRe = kfESDprimary.GetY();
        fPVzRe = kfESDprimary.GetZ();

}
Commit	Line	Data
259c3296	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, 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	**************************************************************************/
50685501	15	//
9bcfd1ab	16	// QA class of primary vertex study for Heavy Flavor electrons
	17	// this has functionality to reject electrons from primary vertex
	18	// and check primary vertex characteristics
	19	//
50685501	20	// Authors:
	21	// MinJung Kweon <minjung@physi.uni-heidelberg.de>
	22	//
259c3296	23
259c3296	24
259c3296	25	#include <TH2F.h>
259c3296	26	#include <TParticle.h>
	27
	28	#include "AliESDEvent.h"
	29	#include <AliESDtrack.h>
faee3b18	30	#include <AliMCEvent.h>
259c3296	31
	32	#include <AliLog.h>
	33	#include <AliKFParticle.h>
	34	#include <AliKFVertex.h>
	35
	36	#include "AliHFEpriVtx.h"
	37
	38
	39	ClassImp(AliHFEpriVtx)
	40
	41	//_______________________________________________________________________________________________
	42	AliHFEpriVtx::AliHFEpriVtx():
	43	fESD1(0x0)
faee3b18	44	,fMCEvent(0x0)
259c3296	45	,fNtrackswoPid(0)
	46	,fHNtrackswoPid(0x0)
	47	,fNESDprimVtxContributor(0x0)
	48	,fNESDprimVtxIndices(0x0)
	49	,fDiffDCAvsPt(0x0)
	50	,fDiffDCAvsNt(0x0)
faee3b18	51	,fNsectrk2prim(0)
	52	,fPVxRe(-999.)
	53	,fPVyRe(-999.)
	54	,fPVzRe(-999.)
259c3296	55	{
	56	//
	57	// Default constructor
	58	//
	59
	60	Init();
	61
	62	}
	63
	64	//_______________________________________________________________________________________________
	65	AliHFEpriVtx::AliHFEpriVtx(const AliHFEpriVtx &p):
	66	TObject(p)
	67	,fESD1(0x0)
faee3b18	68	,fMCEvent(0x0)
259c3296	69	,fNtrackswoPid(p.fNtrackswoPid)
	70	,fHNtrackswoPid(0x0)
	71	,fNESDprimVtxContributor(0x0)
	72	,fNESDprimVtxIndices(0x0)
	73	,fDiffDCAvsPt(0x0)
	74	,fDiffDCAvsNt(0x0)
faee3b18	75	,fNsectrk2prim(p.fNsectrk2prim)
	76	,fPVxRe(p.fPVxRe)
	77	,fPVyRe(p.fPVyRe)
	78	,fPVzRe(p.fPVzRe)
259c3296	79	{
	80	//
	81	// Copy constructor
	82	//
	83	}
	84
	85	//_______________________________________________________________________________________________
	86	AliHFEpriVtx&
	87	AliHFEpriVtx::operator=(const AliHFEpriVtx &)
	88	{
	89	//
	90	// Assignment operator
	91	//
	92
	93	AliInfo("Not yet implemented.");
	94	return *this;
	95	}
	96
	97	//_______________________________________________________________________________________________
	98	AliHFEpriVtx::~AliHFEpriVtx()
	99	{
	100	//
	101	// Destructor
	102	//
	103
	104	AliInfo("Analysis Done.");
	105	}
	106
	107	//__________________________________________
	108	void AliHFEpriVtx::Init()
	109	{
	110	//
	111	// initialize counters
	112	//
	113
	114	fNtrackswoPid = 0;
	115	for (int i=0; i<10; i++){
	116	fPrimVtx[i].fNtrackCount = 0 ;
	117	fPrimVtx[i].fNprimVtxContributorCount = 0 ;
	118	}
	119	}
	120
	121	//_______________________________________________________________________________________________
	122	void AliHFEpriVtx::CreateHistograms(TString hnopt)
	123	{
	124	//
	125	// create histograms
	126	//
	127
	128	fkSourceLabel[kAll]="all";
	129	fkSourceLabel[kDirectCharm]="directCharm";
	130	fkSourceLabel[kDirectBeauty]="directBeauty";
	131	fkSourceLabel[kBeautyCharm]="beauty2charm";
	132	fkSourceLabel[kGamma]="gamma";
	133	fkSourceLabel[kPi0]="pi0";
	134	fkSourceLabel[kElse]="others";
	135	fkSourceLabel[kBeautyGamma]="beauty22gamma";
	136	fkSourceLabel[kBeautyPi0]="beauty22pi0";
	137	fkSourceLabel[kBeautyElse]="beauty22others";
	138
	139
	140	TString hname;
	141	for (Int_t isource = 0; isource < 10; isource++ ){
	142
143	hname=hnopt+"ntracks_"+fkSourceLabel[isource];
144	fPrimVtx[isource].fNtracks = new TH1F(hname,hname,50,0,50);
145	hname=hnopt+"nPrimVtxContributor_"+fkSourceLabel[isource];
146	fPrimVtx[isource].fNprimVtxContributor = new TH1F(hname,hname,100,0,100);
147	hname=hnopt+"PtElec_"+fkSourceLabel[isource];
78ea5ef4	148	fPrimVtx[isource].fPtElec = new TH1F(hname,hname,250,0,50);
259c3296	149	hname=hnopt+"PtElecContributor_"+fkSourceLabel[isource];
78ea5ef4	150	fPrimVtx[isource].fPtElecContributor = new TH1F(hname,hname,250,0,50);
259c3296	151
	152	}
	153
	154	hname=hnopt+"ntrackswopid";
	155	fHNtrackswoPid = new TH1F(hname,hname,50,0,50);
	156	hname=hnopt+"nESDprimVtxContributor";
	157	fNESDprimVtxContributor = new TH1I(hname,hname,100,0,100);
	158	hname=hnopt+"nESDprimVtxIndices";
	159	fNESDprimVtxIndices= new TH1I(hname,hname,100,0,100);
	160	hname=hnopt+"diffDCAvsPt";
78ea5ef4	161	fDiffDCAvsPt = new TH2F(hname,hname,250,0,50,500,0,1);
259c3296	162	hname=hnopt+"diffDCAvsNt";
	163	fDiffDCAvsNt = new TH2F(hname,hname,100,0,100,500,0,1);
	164
	165	}
	166
	167	//_______________________________________________________________________________________________
	168	void AliHFEpriVtx::CountNtracks(Int_t sourcePart, Int_t recpid, Double_t recprob)
	169	{
	170	//
	171	// count number of tracks passed certain cuts
	172	//
	173
	174	fNtrackswoPid++;
	175
	176	if (!recpid && recprob>0.5)
	177	fPrimVtx[kAll].fNtrackCount++;
	178	if(sourcePart<0) return;
	179	fPrimVtx[sourcePart].fNtrackCount++;
	180
	181	}
	182
	183	//_______________________________________________________________________________________________
	184	void AliHFEpriVtx::FillNtracks()
	185	{
	186	//
	187	// count number of tracks passed certain cuts
	188	//
	189
	190	fHNtrackswoPid->Fill(fNtrackswoPid);
	191	for (int i=0; i<10; i++){
	192	fPrimVtx[i].fNtracks->Fill(fPrimVtx[i].fNtrackCount);
	193	}
	194
	195	}
	196
	197	//_______________________________________________________________________________________________
3a72645a	198	Int_t AliHFEpriVtx::GetMCPID(AliESDtrack const *track)
259c3296	199	{
	200	//
	201	// get MC pid
	202	//
	203
faee3b18	204	AliMCParticle *mctrack = NULL;
	205	if(!(mctrack = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(TMath::Abs(track->GetLabel()))))) return 0;
	206	TParticle *mcpart = mctrack->Particle();
	207
259c3296	208	if ( !mcpart ) return 0;
	209	Int_t pdgCode = mcpart->GetPdgCode();
	210
	211	return pdgCode;
	212	}
	213
	214	//_______________________________________________________________________________________________
	215	void AliHFEpriVtx::GetNPriVxtContributor()
	216	{
	217	//
	218	// count number of primary vertex contributor
	219	//
	220
	221	const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
	222	fNESDprimVtxContributor->Fill(primvtx->GetNContributors());
	223	fNESDprimVtxIndices->Fill(primvtx->GetNIndices());
	224	}
	225
	226	//_______________________________________________________________________________________________
	227	void AliHFEpriVtx::CountPriVxtElecContributor(AliESDtrack *ESDelectron, Int_t sourcePart, Int_t recpid, Double_t recprob)
	228	{
	229	//
	230	// count number of electrons contributing to the primary vertex
	231	//
	232
	233
	234	if (recpid \|\| recprob<0.5) return;
	235
	236	// get track id of our selected electron
	237	Int_t elecTrkID = ESDelectron->GetID();
	238
faee3b18	239	AliMCParticle *mctrack = NULL;
	240	if(!(mctrack = dynamic_cast<AliMCParticle *>(fMCEvent->GetTrack(TMath::Abs(ESDelectron->GetLabel()))))) return;
	241	TParticle *mcpart = mctrack->Particle();
	242
	243
	244	if(!mcpart){
	245	AliDebug(1, "no mc particle, return\n");
	246	return;
	247	}
259c3296	248
	249	AliKFParticle::SetField(fESD1->GetMagneticField());
	250	AliKFParticle kfElectron(*ESDelectron,11);
	251
	252	// prepare kfprimary vertex
	253	AliKFVertex kfESDprimary;
	254
	255	// Reconstructed Primary Vertex (with ESD tracks)
	256	const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
	257	// Int_t nt = primvtx->GetNContributors();
	258	Int_t n=primvtx->GetNIndices();
	259
	260	if (n>0 && primvtx->GetStatus()){
	261
	262	kfESDprimary = AliKFVertex(*primvtx);
	263	Double_t dcaBFrmElec = kfElectron.GetDistanceFromVertexXY(kfESDprimary);
	264
	265	UShort_t *priIndex = primvtx->GetIndices();
	266
	267	fPrimVtx[kAll].fPtElec->Fill(mcpart->Pt());
	268	if(sourcePart>=0) fPrimVtx[sourcePart].fPtElec->Fill(mcpart->Pt());
	269
	270	for (Int_t i=0;i<n;i++){
	271
	272	Int_t idx = Int_t(priIndex[i]);
	273	if (idx == elecTrkID){
	274	fPrimVtx[kAll].fNprimVtxContributorCount++;
	275	fPrimVtx[kAll].fPtElecContributor->Fill(mcpart->Pt());
	276	if(sourcePart<0) continue;
	277	fPrimVtx[sourcePart].fNprimVtxContributorCount++;
	278	fPrimVtx[sourcePart].fPtElecContributor->Fill(mcpart->Pt());
	279
	280	kfESDprimary -= kfElectron;
	281	Double_t dcaAFrmElec = kfElectron.GetDistanceFromVertexXY(kfESDprimary);
	282	fDiffDCAvsPt->Fill(mcpart->Pt(),dcaBFrmElec-dcaAFrmElec);
	283	fDiffDCAvsNt->Fill(n,dcaBFrmElec-dcaAFrmElec);
	284	}
	285	}
	286	}
	287
	288	}
	289
	290	//_______________________________________________________________________________________________
75d81601	291	void AliHFEpriVtx::FillNprimVtxContributor() const
259c3296	292	{
	293	//
	294	// Fill histogram with number of electrons contributing to the primary vertex
	295	//
	296
	297	for (int i=0; i<10; i++){
	298	fPrimVtx[i].fNprimVtxContributor->Fill(fPrimVtx[i].fNprimVtxContributorCount);
	299	}
	300
	301	}
70da6c5a	302
70da6c5a	303	//_______________________________________________________________________________________________
c2690925	304	Double_t AliHFEpriVtx::GetDistanceFromRecalVertexXY(const AliESDtrack * const ESDelectron)
70da6c5a	305	{
	306	//
	307	// return recalculated DCA after removing input track from the primary vertex
	308	//
	309
	310	// get track id of our selected electron
	311	Int_t elecTrkID = ESDelectron->GetID();
	312
	313	AliKFParticle::SetField(fESD1->GetMagneticField());
	314	AliKFParticle kfElectron(*ESDelectron,11);
	315
	316	// prepare kfprimary vertex
	317	AliKFVertex kfESDprimary;
	318
	319	// Reconstructed Primary Vertex (with ESD tracks)
	320	const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
	321	Int_t n=primvtx->GetNIndices();
	322
	323	if (n>0 && primvtx->GetStatus()){
	324
	325	kfESDprimary = AliKFVertex(*primvtx);
	326	UShort_t *priIndex = primvtx->GetIndices();
	327
	328	for (Int_t i=0;i<n;i++){
	329
	330	Int_t idx = Int_t(priIndex[i]);
	331	if (idx == elecTrkID){
	332	kfESDprimary -= kfElectron;
	333	Double_t dcaAFrmElec = kfElectron.GetDistanceFromVertexXY(kfESDprimary);
	334
	335	return dcaAFrmElec;
	336	}
	337	}
	338	}
faee3b18	339	return -1;
	340
	341	}
	342
3a72645a	343	void AliHFEpriVtx::RecalcPrimvtx(Int_t nkftrk, const Int_t * const trkid, const AliKFParticle * const kftrk)
faee3b18	344	{
	345	//
	346	// recalculate primary vertex after removing the input track
	347	//
	348
	349	const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
	350
	351	AliKFVertex kfESDprimary;
	352	Int_t n = primvtx->GetNIndices();
	353	fNsectrk2prim = 0;
	354	fPVxRe = -999.;
	355	fPVyRe = -999.;
	356	fPVyRe = -999.;
	357
	358	if (n>0 && primvtx->GetStatus()){
	359	kfESDprimary = AliKFVertex(*primvtx);
	360	UShort_t *priIndex = primvtx->GetIndices();
	361	for (Int_t j=0; j<nkftrk; j++){
	362	for (Int_t i=0;i<n;i++){
	363	Int_t idx = Int_t(priIndex[i]);
	364	if (idx == trkid[j]){
	365	kfESDprimary -= kftrk[j];
	366	fNsectrk2prim++;
	367	}
	368	}
	369	}
	370	}
	371
	372	fPVxRe = kfESDprimary.GetX();
	373	fPVyRe = kfESDprimary.GetY();
	374	fPVzRe = kfESDprimary.GetZ();
	375
	376	}
	377
	378
	379	//_______________________________________________________________________________________________
c2690925	380	void AliHFEpriVtx::RecalcPrimvtx(const AliESDtrack * const ESDelectron)
faee3b18	381	{
	382	//
	383	// recalculate primary vertex after removing the input track
	384	//
	385
	386	// get track id of our selected electron
	387	Int_t elecTrkID = ESDelectron->GetID();
	388
	389	AliKFParticle::SetField(fESD1->GetMagneticField());
	390	AliKFParticle kfElectron(*ESDelectron,11);
	391
	392	const AliESDVertex *primvtx = fESD1->GetPrimaryVertex();
	393
	394	AliKFVertex kfESDprimary;
	395	Int_t n = primvtx->GetNIndices();
	396	fPVxRe = -999.;
	397	fPVyRe = -999.;
	398	fPVyRe = -999.;
	399
	400	if (n>0 && primvtx->GetStatus()){
	401	kfESDprimary = AliKFVertex(*primvtx);
	402	UShort_t *priIndex = primvtx->GetIndices();
	403	for (Int_t i=0;i<n;i++){
	404	Int_t idx = Int_t(priIndex[i]);
	405	if (idx == elecTrkID){
	406	kfESDprimary -= kfElectron;
	407	}
	408	}
	409	}
	410
	411	fPVxRe = kfESDprimary.GetX();
	412	fPVyRe = kfESDprimary.GetY();
	413	fPVzRe = kfESDprimary.GetZ();
70da6c5a	414
70da6c5a	415	}