[u/mrichter/AliRoot.git] / PWG3 / hfe / AliAnalysisTaskCheckV0tenderII.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.                  *
**************************************************************************/
//
// Task fir checking the performance of the V0 tender
// 
// 
// Authors
//   Matus Kalisky <matus.kalisky@cern.ch>
//

#include <TH1F.h>
#include <TList.h>

#include "AliAnalysisManager.h"
#include "AliMCEventHandler.h"
#include "AliESDInputHandler.h"
#include "AliESDv0.h"
#include "AliESDtrack.h"
#include "AliMCParticle.h"
#include "AliMCEvent.h"
#include "AliESDv0KineCuts.h"
#include "AliKFVertex.h"

#include "AliHFEtools.h"
#include "AliHFEcollection.h"

#include "AliAnalysisTaskCheckV0tenderII.h"

ClassImp(AliAnalysisTaskCheckV0tenderII)

//__________________________________________________________
AliAnalysisTaskCheckV0tenderII::AliAnalysisTaskCheckV0tenderII():
  AliAnalysisTaskSE("CheckV0tenderTask")
  , fOutput(0x0)
  , fColl(0x0)
  , fCollMC(0x0)
  , fV0cuts(0x0)
  , fPrimaryVertex(0x0)
  , fpdgV0(0)
  , fpdgP(0)
  , fpdgN(0)
  , fEvents(0x0)
{
  //
  // Default Constructor
  //


  DefineOutput(1, TH1F::Class());
  DefineOutput(2, TList::Class());


}
//__________________________________________________________
AliAnalysisTaskCheckV0tenderII::AliAnalysisTaskCheckV0tenderII(const Char_t *name):
  AliAnalysisTaskSE(name)
  , fOutput(0x0)
  , fColl(0x0)
  , fCollMC(0x0)
  , fV0cuts(0x0)
  , fPrimaryVertex(0x0)
  , fpdgV0(0)
  , fpdgP(0)
  , fpdgN(0)
  , fEvents(0x0)
{
  //
  // Constructor
  //

  DefineOutput(1, TH1F::Class());
  DefineOutput(2, TList::Class());

}
//__________________________________________________________
AliAnalysisTaskCheckV0tenderII::~AliAnalysisTaskCheckV0tenderII(){
  //
  // Destructor
  //

  if (fOutput) delete fOutput;
  if (fColl) delete fColl;
  if (fCollMC) delete fCollMC;
  if (fV0cuts) delete fV0cuts;
  if (fPrimaryVertex) delete fPrimaryVertex;
  if (fEvents) delete fEvents;
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tenderII::UserCreateOutputObjects(){
  //
  // prepare output objects
  //

  fOutput = new TList();
  //fOutput->SetOwner();
  // Counter for number of events
  fEvents = new TH1I("nEvents", "NumberOfEvents", 1, 1, 2);

  fColl = new AliHFEcollection("V0_QA", "tender V0s for data");
  fCollMC = new AliHFEcollection("V0_MC_QA", "tender V0s for MC");

  fV0cuts = new AliESDv0KineCuts();
  if(!fV0cuts){
    AliError("Failed to initialize AliESDv0KineCuts instance");
    return;
  }

  // 
  // Data histos
  //
  
  // total number of tagged V0s
  fColl->CreateTH1F("h_NumberOf_V0s", "Number of tagged V0s; type; counts", 4, -0.5, 3.5);
  // pT spectra of the tagged V0s
  fColl->CreateTH1F("h_Gamma_pt", "p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fColl->CreateTH1F("h_K0_pt", "p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fColl->CreateTH1F("h_Lambda_pt", "p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fColl->CreateTH1F("h_ALambda_pt", "p_{T} spectrum of tagged A-Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  // invariant mass of the V0s
  fColl->CreateTH1F("h_Gamma_mass", "Inv. Mass of the ", 100, 0., 0.1);
  fColl->CreateTH1F("h_K0_mass", "Inv. Mass of the ", 100, 0.45, 0.55);
  fColl->CreateTH1F("h_Lambda_mass", "Inv. Mass of the ", 100, 1.08, 1.14);
  fColl->CreateTH1F("h_ALambda_mass", "Inv. Mass of the ", 100, 1.08, 1.14);

  // total number of tagged daughter particles (should correlate with number of V0s !
  fColl->CreateTH1F("h_NumberOfDaughters", "Number of tagged daughters; type; counts", 3, -0.5, 2.5);
  // pT spectra of tagged daughter particles
  fColl->CreateTH1F("h_Electron_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fColl->CreateTH1F("h_Pion_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fColl->CreateTH1F("h_Proton_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);

  //
  // MC histos
  //

  // pT spectra of the tagged V0s
  fCollMC->CreateTH1F("h_Gamma_pt_S", "MC-S: p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_K0_pt_S", "MC-S: p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_Lambda_pt_S", "MC-S: p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_ALambda_pt_S", "MC-S: p_{T} spectrum of tagged A-Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0); 
  fCollMC->CreateTH1F("h_Gamma_pt_B", "MC-B: p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_K0_pt_B", "MC-B: p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_Lambda_pt_B", "MC-B: p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_ALambda_pt_B", "MC-B: p_{T} spectrum of tagged A-Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0); 
  // invariant mass of the V0s
  fCollMC->CreateTH1F("h_Gamma_mass_S", "MC-S: Inv. Mass of the gamma; m (GeV/c^{2}); counts", 100, 0., 0.1);
  fCollMC->CreateTH1F("h_K0_mass_S", "MC-S: Inv. Mass of the K0; m (GeV/c^{2}); counts", 100, 0.45, 0.55);
  fCollMC->CreateTH1F("h_Lambda_mass_S", "MC-S: Inv. Mass of the Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
  fCollMC->CreateTH1F("h_ALambda_mass_S", "MC-S: Inv. Mass of the A-Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
  fCollMC->CreateTH1F("h_Gamma_mass_B", "MC-B: Inv. Mass of the gamma; m (GeV/c^{2}); counts", 100, 0., 0.1);
  fCollMC->CreateTH1F("h_K0_mass_B", "MC-B: Inv. Mass of the K0; m (GeV/c^{2}); counts", 100, 0.45, 0.55);
  fCollMC->CreateTH1F("h_Lambda_mass_B", "MC-B: Inv. Mass of the Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
  fCollMC->CreateTH1F("h_ALambda_mass_B", "MC-B: Inv. Mass of the A-Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
  // pT spectra of tagged daughter particles
  fCollMC->CreateTH1F("h_Electron_pt_S", "MC-S: p_{T} spectrum of tagged electrons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_Pion_pt_S", "MC-S: p_{T} spectrum of tagged pions; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_Proton_pt_S", "MC-S: p_{T} spectrum of tagged protons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_Electron_pt_B", "MC-B: p_{T} spectrum of tagged electrons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_Pion_pt_B", "MC-B: p_{T} spectrum of tagged pions; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
  fCollMC->CreateTH1F("h_Proton_pt_B", "MC-B: p_{T} spectrum of tagged protons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);


  TList *tmp = fColl->GetList();
  tmp->SetName(fColl->GetName());
  fOutput->Add(tmp);
  tmp = 0x0;
  tmp = fCollMC->GetList();
  tmp->SetName(fCollMC->GetName());
  fOutput->Add(tmp);
  
  
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tenderII::UserExec(Option_t *){
  //
  // Event Loop
  // 
  AliMCEventHandler* mcHandler = (dynamic_cast<AliMCEventHandler*>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()));
  AliESDInputHandler *inh = dynamic_cast<AliESDInputHandler *>(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
  AliESDpid *workingPID = NULL;
  if(inh && (workingPID = inh->GetESDpid())) workingPID = inh->GetESDpid();
  else workingPID = AliHFEtools::GetDefaultPID(mcHandler ? kTRUE : kFALSE);
     
  // check the MC data
  if(fMCEvent && !mcHandler ) return;
  if(fMCEvent &&  !mcHandler->InitOk() ) return;
  if(fMCEvent &&  !mcHandler->TreeK() ) return;
  if(fMCEvent &&  !mcHandler->TreeTR() ) return;

  fPrimaryVertex = new AliKFVertex(*(fInputEvent->GetPrimaryVertex()));
  if(!fPrimaryVertex) return;

  fV0cuts->SetEvent(fInputEvent);
  fV0cuts->SetPrimaryVertex(fPrimaryVertex);

  ProcessV0s();

  fEvents->Fill(1.1);
  PostData(1, fEvents);
  PostData(2, fOutput);
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tenderII::Terminate(Option_t *){
  //
  // Do Post Processing
  //
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tenderII::ProcessV0s(){
  //
  // loop over the V0s and extract the information about
  // the V0s tagged by the V0 tender
  //

  const char * type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
  char name[256] = "";

  Int_t nV0s = fInputEvent->GetNumberOfV0s();
  for(Int_t i=0; i<nV0s; ++i){
    AliESDv0 *esdV0 = (dynamic_cast<AliESDEvent *>(fInputEvent))->GetV0(i);
    if(!esdV0) continue;
    if(!esdV0->GetOnFlyStatus()) continue; // Take only V0s from the On-the-fly v0 finder

    // New standalone V0 selection software
    if( ! (fV0cuts->ProcessV0(esdV0, fpdgV0, fpdgP, fpdgN)) ) return;
    
    Int_t pid = PDGtoPIDv0(fpdgV0);
    //printf(" -D: pdg: %i, pid: %i\n", fpdgV0, pid);
    if(pid <= -1) continue;
    
    fColl->Fill("h_NumberOf_V0s", pid);
    sprintf(name, "h_%s_pt", type[pid]);
    Float_t pT = esdV0->Pt();
    fColl->Fill(name, pT);
    Float_t mass = MassV0(esdV0, pid);
    sprintf(name, "h_%s_mass", type[pid]);
    fColl->Fill(name, mass);

    ProcessDaughters(esdV0);
    if(fMCEvent){
      ProcessV0sMC(esdV0);
      ProcessDaughtersMC(esdV0);
    }

  }

}
//__________________________________________________________
void AliAnalysisTaskCheckV0tenderII::ProcessDaughters(AliESDv0 * const v0){
  //
  // produce some check plots for V0 tender tagged single tracks
  //

  const char * type[3] = {"Electron", "Pion", "Proton"};
  char name[256] = "";

  if(!v0) return;

  // daughter tracks
  const Int_t nTracks = fInputEvent->GetNumberOfTracks();
  AliESDtrack *d[2];
  Int_t iN, iP;
  iN = iP = -1;
  iP = v0->GetPindex();
  iN = v0->GetNindex();
  if(iN < 0 || iP < 0) return;
  if(iN >= nTracks || iP >= nTracks) return;
  d[0] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
  d[1] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));  
  if(!d[0] || !d[1]) return;

  for(Int_t i=0; i<2; ++i){
    Int_t  pid = (i == 0) ? PDGtoPID(fpdgP) : PDGtoPID(fpdgN);
    if(pid < 0) continue;
    fColl->Fill("h_NumberOfDaughters", pid*1.0);
    Float_t pT = d[i]->Pt();
    sprintf(name, "h_%s_pt", type[pid]);
    fColl->Fill(name, pT);

  }
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tenderII::ProcessV0sMC(AliESDv0 * const v0){
  //
  // check all V0tender selected V0 on their true identity
  // 

  const char * type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
  char name[256] = "";

  
  Int_t pid = PDGtoPIDv0(fpdgV0);
  if(pid < 0) return;

  // true if fpdgV0 agrees with MC pdg of the mother
  Bool_t id = kFALSE;
  const Int_t nTracks = fInputEvent->GetNumberOfTracks();
  // both ESD daughtr tracks
  Int_t iN, iP;
  iN = iP = -1;
  iP = v0->GetPindex();
  iN = v0->GetNindex();    
  if(iN < 0 || iP < 0) return;
  if(iN >= nTracks || iP >= nTracks) return;    
  AliESDtrack *dP, *dN;
  dP = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
  dN = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));  
  if(!dN || !dP) return;

  // MC labels of the daughter tracks
  Int_t lN, lP;
  lN = dN->GetLabel();
  lP = dP->GetLabel();
  if(lN < 0 || lP < 0) return;

  // MC daughter particles
  AliMCParticle *mcP, *mcN;
  mcP = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lP));
  mcN = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lN));
  if(!mcP || !mcN) return;

  // labels of the mother particles
  Int_t lPm, lNm;
  lPm = mcP->GetMother();
  lNm = mcN->GetMother();
  AliMCParticle *m = 0x0;
  // particles without mother particle are most probably
  // primary particles
  if(lPm >= 0){
    m = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lPm)); 
    if(!m) return;
  }
  if(m){
    Int_t pdg = m->PdgCode();
    //if(lPm == lNm) printf(" -D: pdg: %i, fpdgV0: %i \n", pdg, fpdgV0);
    if((lPm == lNm) && (pdg == fpdgV0)) id = kTRUE;
  }
  
  if(id) sprintf(name, "h_%s_pt_S", type[pid]);
  else sprintf(name, "h_%s_pt_B", type[pid]);
  Float_t pT = v0->Pt();
  fCollMC->Fill(name, pT);

  if(id) sprintf(name, "h_%s_mass_S", type[pid]);
  else sprintf(name, "h_%s_mass_B", type[pid]);
  Float_t mass = MassV0(v0, pid);
  fCollMC->Fill(name, mass);

  
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tenderII::ProcessDaughtersMC(AliESDv0 * const v0){
  //
  // check the identity of the V0tender selected V0 daughters
  // !!! for positive check only the true identity plays a role here, 
  // not the true V0 mother identity (e.g. selected electron could come
  // from primary vertex or pion dalitz deca or true gamma conversion) !!!
  //

  const char * type[3] = {"Electron", "Pion", "Proton"};
  char name[256] = "";

  if(!v0) return;

  // daughter tracks
  const Int_t nTracks = fInputEvent->GetNumberOfTracks();
  AliESDtrack *d[2];
  Int_t iN, iP;
  iN = iP = -1;
  iP = v0->GetPindex();
  iN = v0->GetNindex();
  if(iN < 0 || iP < 0) return;
  if(iN >= nTracks || iP >= nTracks) return;
  d[0] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
  d[1] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));  
  if(!d[0] || !d[1]) return;

  //printf(" *** fpdgV0: %i, fpdgP: %i, fpdgN: %i \n", fpdgV0, fpdgP, fpdgN);

  for(Int_t i=0; i<2; ++i){
    Bool_t id = kFALSE;
    Int_t  pid = (i == 0) ? PDGtoPID(fpdgP) : PDGtoPID(fpdgN);
    Int_t  pdg  = (i == 0) ? fpdgP : fpdgN;
    if(pid < 0) continue;
    Float_t pT = d[i]->Pt();
    Int_t label = d[i]->GetLabel();
    if(label < 0) continue;
    AliMCParticle *mcp = 0x0;
    mcp = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(label));
    if(!mcp) continue;
    Int_t pdgMC = mcp->PdgCode();
    //printf("   * pid: %i, pdg: %i, pdgMC: %i \n", pid, pdg, pdgMC);
    if(pdgMC == pdg) id = kTRUE;
    if(id) sprintf(name, "h_%s_pt_S", type[pid]);
    else sprintf(name, "h_%s_pt_B", type[pid]);
    fCollMC->Fill(name, pT);
  }
}
//__________________________________________________________
Float_t AliAnalysisTaskCheckV0tenderII::MassV0(AliESDv0 * const v0, Int_t id){
  //
  // Get the V0 effective mass
  //

  Float_t mass = -0.1;
  Bool_t sign = CheckSigns(v0);
  if(0 == id){
    mass = v0->GetEffMass(0, 0);
  }
  else if(1 == id){
    mass = v0->GetEffMass(2, 2);
  }
  else if(2 == id){
    mass = (sign) ? v0->GetEffMass(4, 2) : v0->GetEffMass(2, 4);
  }
  else if(3 == id){
    mass = (sign) ? v0->GetEffMass(2, 4) : v0->GetEffMass(4, 2);
  }
  else{
    AliWarning(Form("Unrecognized V0 id: %i", id));
  }

  return mass;

}
//__________________________________________________________
Bool_t AliAnalysisTaskCheckV0tenderII::CheckSigns(AliESDv0 * const v0){
  //
  // check wheter the sign was correctly applied to 
  // V0 daughter tracks
  // This function should become obsolete once the V0 finder will be updated (fixed)
  //
  
  Bool_t correct = kFALSE;

  Int_t pIndex = 0, nIndex = 0;
  pIndex = v0->GetPindex();
  nIndex = v0->GetNindex();
  
  AliESDtrack* d[2];
  d[0] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(pIndex));
  d[1] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(nIndex));

  Int_t sign[2];
  sign[0] = (int)d[0]->GetSign();
  sign[1] = (int)d[1]->GetSign();
  
  if(-1 == sign[0] && 1 == sign[1]){
    correct = kFALSE;
    //v0->SetIndex(0, pIndex);  // set the index of the negative v0 track
    //v0->SetIndex(1, nIndex);  // set the index of the positive v0 track
  }
  else{
    correct = kTRUE;
  }
  
  //pIndex = v0->GetPindex();
  //nIndex = v0->GetNindex();
  //printf("-D2: P: %i, N: %i\n", pIndex, nIndex);

  return correct;
}
//__________________________________________________________
const Int_t  AliAnalysisTaskCheckV0tenderII::PDGtoPIDv0(Int_t pdgV0){
  //
  // convert thereconstructed V0 pdg to local pid
  //

  switch(pdgV0){
  case 22: return 0; break;
  case 310: return 1; break;
  case 3122: return 2; break;
  case -3122: return 3; break;
  }
  
  return -1;

}
//__________________________________________________________
const Int_t  AliAnalysisTaskCheckV0tenderII::PDGtoPID(Int_t pdg){
  //
  // convert daughter pdg code to local pid
  //
  switch(TMath::Abs(pdg)){
  case 11: return 0; break;
  case 211: return 1; break;
  case 2212: return 2; break;
  }
  return -1;

}
Commit	Line	Data
3a72645a	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	**************************************************************************/
	15	//
	16	// Task fir checking the performance of the V0 tender
	17	//
	18	//
	19	// Authors
	20	// Matus Kalisky <matus.kalisky@cern.ch>
	21	//
	22
	23	#include <TH1F.h>
	24	#include <TList.h>
	25
	26	#include "AliAnalysisManager.h"
	27	#include "AliMCEventHandler.h"
	28	#include "AliESDInputHandler.h"
	29	#include "AliESDv0.h"
	30	#include "AliESDtrack.h"
	31	#include "AliMCParticle.h"
	32	#include "AliMCEvent.h"
	33	#include "AliESDv0KineCuts.h"
	34	#include "AliKFVertex.h"
	35
	36	#include "AliHFEtools.h"
	37	#include "AliHFEcollection.h"
	38
	39	#include "AliAnalysisTaskCheckV0tenderII.h"
	40
	41	ClassImp(AliAnalysisTaskCheckV0tenderII)
	42
	43	//__________________________________________________________
	44	AliAnalysisTaskCheckV0tenderII::AliAnalysisTaskCheckV0tenderII():
	45	AliAnalysisTaskSE("CheckV0tenderTask")
	46	, fOutput(0x0)
	47	, fColl(0x0)
	48	, fCollMC(0x0)
	49	, fV0cuts(0x0)
	50	, fPrimaryVertex(0x0)
	51	, fpdgV0(0)
	52	, fpdgP(0)
	53	, fpdgN(0)
	54	, fEvents(0x0)
	55	{
	56	//
	57	// Default Constructor
	58	//
	59
	60
	61	DefineOutput(1, TH1F::Class());
	62	DefineOutput(2, TList::Class());
	63
	64
65	}
66	//__________________________________________________________
67	AliAnalysisTaskCheckV0tenderII::AliAnalysisTaskCheckV0tenderII(const Char_t *name):
68	AliAnalysisTaskSE(name)
69	, fOutput(0x0)
70	, fColl(0x0)
71	, fCollMC(0x0)
72	, fV0cuts(0x0)
73	, fPrimaryVertex(0x0)
74	, fpdgV0(0)
75	, fpdgP(0)
76	, fpdgN(0)
77	, fEvents(0x0)
78	{
79	//
80	// Constructor
81	//
82
83	DefineOutput(1, TH1F::Class());
84	DefineOutput(2, TList::Class());
85
86	}
87	//__________________________________________________________
88	AliAnalysisTaskCheckV0tenderII::~AliAnalysisTaskCheckV0tenderII(){
89	//
90	// Destructor
91	//
92
93	if (fOutput) delete fOutput;
94	if (fColl) delete fColl;
95	if (fCollMC) delete fCollMC;
96	if (fV0cuts) delete fV0cuts;
97	if (fPrimaryVertex) delete fPrimaryVertex;
98	if (fEvents) delete fEvents;
99	}
100	//__________________________________________________________
101	void AliAnalysisTaskCheckV0tenderII::UserCreateOutputObjects(){
102	//
103	// prepare output objects
104	//
105
106	fOutput = new TList();
107	//fOutput->SetOwner();
108	// Counter for number of events
109	fEvents = new TH1I("nEvents", "NumberOfEvents", 1, 1, 2);
110
111	fColl = new AliHFEcollection("V0_QA", "tender V0s for data");
112	fCollMC = new AliHFEcollection("V0_MC_QA", "tender V0s for MC");
113
114	fV0cuts = new AliESDv0KineCuts();
115	if(!fV0cuts){
116	AliError("Failed to initialize AliESDv0KineCuts instance");
117	return;
118	}
119
120	//
121	// Data histos
122	//
123
124	// total number of tagged V0s
125	fColl->CreateTH1F("h_NumberOf_V0s", "Number of tagged V0s; type; counts", 4, -0.5, 3.5);
126	// pT spectra of the tagged V0s
127	fColl->CreateTH1F("h_Gamma_pt", "p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
128	fColl->CreateTH1F("h_K0_pt", "p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
129	fColl->CreateTH1F("h_Lambda_pt", "p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
130	fColl->CreateTH1F("h_ALambda_pt", "p_{T} spectrum of tagged A-Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
131	// invariant mass of the V0s
132	fColl->CreateTH1F("h_Gamma_mass", "Inv. Mass of the ", 100, 0., 0.1);
133	fColl->CreateTH1F("h_K0_mass", "Inv. Mass of the ", 100, 0.45, 0.55);
134	fColl->CreateTH1F("h_Lambda_mass", "Inv. Mass of the ", 100, 1.08, 1.14);
135	fColl->CreateTH1F("h_ALambda_mass", "Inv. Mass of the ", 100, 1.08, 1.14);
136
137	// total number of tagged daughter particles (should correlate with number of V0s !
138	fColl->CreateTH1F("h_NumberOfDaughters", "Number of tagged daughters; type; counts", 3, -0.5, 2.5);
139	// pT spectra of tagged daughter particles
140	fColl->CreateTH1F("h_Electron_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
141	fColl->CreateTH1F("h_Pion_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
142	fColl->CreateTH1F("h_Proton_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
143
144	//
145	// MC histos
146	//
147
148	// pT spectra of the tagged V0s
149	fCollMC->CreateTH1F("h_Gamma_pt_S", "MC-S: p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
150	fCollMC->CreateTH1F("h_K0_pt_S", "MC-S: p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
151	fCollMC->CreateTH1F("h_Lambda_pt_S", "MC-S: p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
152	fCollMC->CreateTH1F("h_ALambda_pt_S", "MC-S: p_{T} spectrum of tagged A-Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
153	fCollMC->CreateTH1F("h_Gamma_pt_B", "MC-B: p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
154	fCollMC->CreateTH1F("h_K0_pt_B", "MC-B: p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
155	fCollMC->CreateTH1F("h_Lambda_pt_B", "MC-B: p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
156	fCollMC->CreateTH1F("h_ALambda_pt_B", "MC-B: p_{T} spectrum of tagged A-Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
157	// invariant mass of the V0s
158	fCollMC->CreateTH1F("h_Gamma_mass_S", "MC-S: Inv. Mass of the gamma; m (GeV/c^{2}); counts", 100, 0., 0.1);
159	fCollMC->CreateTH1F("h_K0_mass_S", "MC-S: Inv. Mass of the K0; m (GeV/c^{2}); counts", 100, 0.45, 0.55);
160	fCollMC->CreateTH1F("h_Lambda_mass_S", "MC-S: Inv. Mass of the Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
161	fCollMC->CreateTH1F("h_ALambda_mass_S", "MC-S: Inv. Mass of the A-Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
162	fCollMC->CreateTH1F("h_Gamma_mass_B", "MC-B: Inv. Mass of the gamma; m (GeV/c^{2}); counts", 100, 0., 0.1);
163	fCollMC->CreateTH1F("h_K0_mass_B", "MC-B: Inv. Mass of the K0; m (GeV/c^{2}); counts", 100, 0.45, 0.55);
164	fCollMC->CreateTH1F("h_Lambda_mass_B", "MC-B: Inv. Mass of the Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
165	fCollMC->CreateTH1F("h_ALambda_mass_B", "MC-B: Inv. Mass of the A-Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
166	// pT spectra of tagged daughter particles
167	fCollMC->CreateTH1F("h_Electron_pt_S", "MC-S: p_{T} spectrum of tagged electrons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
168	fCollMC->CreateTH1F("h_Pion_pt_S", "MC-S: p_{T} spectrum of tagged pions; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
169	fCollMC->CreateTH1F("h_Proton_pt_S", "MC-S: p_{T} spectrum of tagged protons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
170	fCollMC->CreateTH1F("h_Electron_pt_B", "MC-B: p_{T} spectrum of tagged electrons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
171	fCollMC->CreateTH1F("h_Pion_pt_B", "MC-B: p_{T} spectrum of tagged pions; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
172	fCollMC->CreateTH1F("h_Proton_pt_B", "MC-B: p_{T} spectrum of tagged protons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
173
174
175	TList *tmp = fColl->GetList();
176	tmp->SetName(fColl->GetName());
177	fOutput->Add(tmp);
178	tmp = 0x0;
179	tmp = fCollMC->GetList();
180	tmp->SetName(fCollMC->GetName());
181	fOutput->Add(tmp);
182
183
184	}
185	//__________________________________________________________
186	void AliAnalysisTaskCheckV0tenderII::UserExec(Option_t *){
187	//
188	// Event Loop
189	//
190	AliMCEventHandler* mcHandler = (dynamic_cast<AliMCEventHandler*>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()));
191	AliESDInputHandler inh = dynamic_cast<AliESDInputHandler >(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
192	AliESDpid *workingPID = NULL;
193	if(inh && (workingPID = inh->GetESDpid())) workingPID = inh->GetESDpid();
194	else workingPID = AliHFEtools::GetDefaultPID(mcHandler ? kTRUE : kFALSE);
195
196	// check the MC data
197	if(fMCEvent && !mcHandler ) return;
198	if(fMCEvent && !mcHandler->InitOk() ) return;
199	if(fMCEvent && !mcHandler->TreeK() ) return;
200	if(fMCEvent && !mcHandler->TreeTR() ) return;
201
202	fPrimaryVertex = new AliKFVertex(*(fInputEvent->GetPrimaryVertex()));
203	if(!fPrimaryVertex) return;
204
205	fV0cuts->SetEvent(fInputEvent);
206	fV0cuts->SetPrimaryVertex(fPrimaryVertex);
207
208	ProcessV0s();
209
210	fEvents->Fill(1.1);
211	PostData(1, fEvents);
212	PostData(2, fOutput);
213	}
214	//__________________________________________________________
215	void AliAnalysisTaskCheckV0tenderII::Terminate(Option_t *){
216	//
217	// Do Post Processing
218	//
219	}
220	//__________________________________________________________
221	void AliAnalysisTaskCheckV0tenderII::ProcessV0s(){
222	//
223	// loop over the V0s and extract the information about
224	// the V0s tagged by the V0 tender
225	//
226
227	const char * type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
228	char name[256] = "";
229
230	Int_t nV0s = fInputEvent->GetNumberOfV0s();
231	for(Int_t i=0; i<nV0s; ++i){
232	AliESDv0 esdV0 = (dynamic_cast<AliESDEvent >(fInputEvent))->GetV0(i);
233	if(!esdV0) continue;
234	if(!esdV0->GetOnFlyStatus()) continue; // Take only V0s from the On-the-fly v0 finder
235
236	// New standalone V0 selection software
237	if( ! (fV0cuts->ProcessV0(esdV0, fpdgV0, fpdgP, fpdgN)) ) return;
238
239	Int_t pid = PDGtoPIDv0(fpdgV0);
240	//printf(" -D: pdg: %i, pid: %i\n", fpdgV0, pid);
241	if(pid <= -1) continue;
242
243	fColl->Fill("h_NumberOf_V0s", pid);
244	sprintf(name, "h_%s_pt", type[pid]);
245	Float_t pT = esdV0->Pt();
246	fColl->Fill(name, pT);
247	Float_t mass = MassV0(esdV0, pid);
248	sprintf(name, "h_%s_mass", type[pid]);
249	fColl->Fill(name, mass);
250
251	ProcessDaughters(esdV0);
252	if(fMCEvent){
253	ProcessV0sMC(esdV0);
254	ProcessDaughtersMC(esdV0);
255	}
256
257	}
258
259	}
260	//__________________________________________________________
261	void AliAnalysisTaskCheckV0tenderII::ProcessDaughters(AliESDv0 * const v0){
262	//
263	// produce some check plots for V0 tender tagged single tracks
264	//
265
266	const char * type[3] = {"Electron", "Pion", "Proton"};
267	char name[256] = "";
268
269	if(!v0) return;
270
271	// daughter tracks
272	const Int_t nTracks = fInputEvent->GetNumberOfTracks();
273	AliESDtrack *d[2];
274	Int_t iN, iP;
275	iN = iP = -1;
276	iP = v0->GetPindex();
277	iN = v0->GetNindex();
278	if(iN < 0 \|\| iP < 0) return;
279	if(iN >= nTracks \|\| iP >= nTracks) return;
280	d[0] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
281	d[1] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));
282	if(!d[0] \|\| !d[1]) return;
283
284	for(Int_t i=0; i<2; ++i){
285	Int_t pid = (i == 0) ? PDGtoPID(fpdgP) : PDGtoPID(fpdgN);
286	if(pid < 0) continue;
287	fColl->Fill("h_NumberOfDaughters", pid*1.0);
288	Float_t pT = d[i]->Pt();
289	sprintf(name, "h_%s_pt", type[pid]);
290	fColl->Fill(name, pT);
291
292	}
293	}
294	//__________________________________________________________
295	void AliAnalysisTaskCheckV0tenderII::ProcessV0sMC(AliESDv0 * const v0){
296	//
297	// check all V0tender selected V0 on their true identity
298	//
299
300	const char * type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
301	char name[256] = "";
302
303
304	Int_t pid = PDGtoPIDv0(fpdgV0);
305	if(pid < 0) return;
306
307	// true if fpdgV0 agrees with MC pdg of the mother
308	Bool_t id = kFALSE;
309	const Int_t nTracks = fInputEvent->GetNumberOfTracks();
310	// both ESD daughtr tracks
311	Int_t iN, iP;
312	iN = iP = -1;
313	iP = v0->GetPindex();
314	iN = v0->GetNindex();
315	if(iN < 0 \|\| iP < 0) return;
316	if(iN >= nTracks \|\| iP >= nTracks) return;
317	AliESDtrack dP, dN;
318	dP = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
319	dN = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));
320	if(!dN \|\| !dP) return;
321
322	// MC labels of the daughter tracks
323	Int_t lN, lP;
324	lN = dN->GetLabel();
325	lP = dP->GetLabel();
326	if(lN < 0 \|\| lP < 0) return;
327
328	// MC daughter particles
329	AliMCParticle mcP, mcN;
330	mcP = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lP));
331	mcN = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lN));
332	if(!mcP \|\| !mcN) return;
333
334	// labels of the mother particles
335	Int_t lPm, lNm;
336	lPm = mcP->GetMother();
337	lNm = mcN->GetMother();
338	AliMCParticle *m = 0x0;
339	// particles without mother particle are most probably
340	// primary particles
341	if(lPm >= 0){
342	m = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lPm));
343	if(!m) return;
344	}
345	if(m){
346	Int_t pdg = m->PdgCode();
347	//if(lPm == lNm) printf(" -D: pdg: %i, fpdgV0: %i \n", pdg, fpdgV0);
348	if((lPm == lNm) && (pdg == fpdgV0)) id = kTRUE;
349	}
350
351	if(id) sprintf(name, "h_%s_pt_S", type[pid]);
352	else sprintf(name, "h_%s_pt_B", type[pid]);
353	Float_t pT = v0->Pt();
354	fCollMC->Fill(name, pT);
355
356	if(id) sprintf(name, "h_%s_mass_S", type[pid]);
357	else sprintf(name, "h_%s_mass_B", type[pid]);
358	Float_t mass = MassV0(v0, pid);
359	fCollMC->Fill(name, mass);
360
361
362	}
363	//__________________________________________________________
364	void AliAnalysisTaskCheckV0tenderII::ProcessDaughtersMC(AliESDv0 * const v0){
365	//
366	// check the identity of the V0tender selected V0 daughters
367	// !!! for positive check only the true identity plays a role here,
368	// not the true V0 mother identity (e.g. selected electron could come
369	// from primary vertex or pion dalitz deca or true gamma conversion) !!!
370	//
371
372	const char * type[3] = {"Electron", "Pion", "Proton"};
373	char name[256] = "";
374
375	if(!v0) return;
376
377	// daughter tracks
378	const Int_t nTracks = fInputEvent->GetNumberOfTracks();
379	AliESDtrack *d[2];
380	Int_t iN, iP;
381	iN = iP = -1;
382	iP = v0->GetPindex();
383	iN = v0->GetNindex();
384	if(iN < 0 \|\| iP < 0) return;
385	if(iN >= nTracks \|\| iP >= nTracks) return;
386	d[0] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
387	d[1] = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));
388	if(!d[0] \|\| !d[1]) return;
389
390	//printf(" *** fpdgV0: %i, fpdgP: %i, fpdgN: %i \n", fpdgV0, fpdgP, fpdgN);
391
392	for(Int_t i=0; i<2; ++i){
393	Bool_t id = kFALSE;
394	Int_t pid = (i == 0) ? PDGtoPID(fpdgP) : PDGtoPID(fpdgN);
395	Int_t pdg = (i == 0) ? fpdgP : fpdgN;
396	if(pid < 0) continue;
397	Float_t pT = d[i]->Pt();
398	Int_t label = d[i]->GetLabel();
399	if(label < 0) continue;
400	AliMCParticle *mcp = 0x0;
401	mcp = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(label));
402	if(!mcp) continue;
403	Int_t pdgMC = mcp->PdgCode();
404	//printf(" * pid: %i, pdg: %i, pdgMC: %i \n", pid, pdg, pdgMC);
405	if(pdgMC == pdg) id = kTRUE;
406	if(id) sprintf(name, "h_%s_pt_S", type[pid]);
407	else sprintf(name, "h_%s_pt_B", type[pid]);
408	fCollMC->Fill(name, pT);
409	}
410	}
411	//__________________________________________________________
412	Float_t AliAnalysisTaskCheckV0tenderII::MassV0(AliESDv0 * const v0, Int_t id){
413	//
414	// Get the V0 effective mass
415	//
416
417	Float_t mass = -0.1;
418	Bool_t sign = CheckSigns(v0);
419	if(0 == id){
420	mass = v0->GetEffMass(0, 0);
421	}
422	else if(1 == id){
423	mass = v0->GetEffMass(2, 2);
424	}
425	else if(2 == id){
426	mass = (sign) ? v0->GetEffMass(4, 2) : v0->GetEffMass(2, 4);
427	}
428	else if(3 == id){
429	mass = (sign) ? v0->GetEffMass(2, 4) : v0->GetEffMass(4, 2);
430	}
431	else{
432	AliWarning(Form("Unrecognized V0 id: %i", id));
433	}
434
435	return mass;
436
437	}
438	//__________________________________________________________
439	Bool_t AliAnalysisTaskCheckV0tenderII::CheckSigns(AliESDv0 * const v0){
440	//
441	// check wheter the sign was correctly applied to
442	// V0 daughter tracks
443	// This function should become obsolete once the V0 finder will be updated (fixed)
444	//
445
446	Bool_t correct = kFALSE;
447
448	Int_t pIndex = 0, nIndex = 0;
449	pIndex = v0->GetPindex();
450	nIndex = v0->GetNindex();
451
452	AliESDtrack* d[2];
453	d[0] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(pIndex));
454	d[1] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(nIndex));
455
456	Int_t sign[2];
457	sign[0] = (int)d[0]->GetSign();
458	sign[1] = (int)d[1]->GetSign();
459
460	if(-1 == sign[0] && 1 == sign[1]){
461	correct = kFALSE;
462	//v0->SetIndex(0, pIndex); // set the index of the negative v0 track
463	//v0->SetIndex(1, nIndex); // set the index of the positive v0 track
464	}
465	else{
466	correct = kTRUE;
467	}
468
469	//pIndex = v0->GetPindex();
470	//nIndex = v0->GetNindex();
471	//printf("-D2: P: %i, N: %i\n", pIndex, nIndex);
472
473	return correct;
474	}
475	//__________________________________________________________
476	const Int_t AliAnalysisTaskCheckV0tenderII::PDGtoPIDv0(Int_t pdgV0){
477	//
478	// convert thereconstructed V0 pdg to local pid
479	//
480
481	switch(pdgV0){
482	case 22: return 0; break;
483	case 310: return 1; break;
484	case 3122: return 2; break;
485	case -3122: return 3; break;
486	}
487
488	return -1;
489
490	}
491	//__________________________________________________________
492	const Int_t AliAnalysisTaskCheckV0tenderII::PDGtoPID(Int_t pdg){
493	//
494	// convert daughter pdg code to local pid
495	//
496	switch(TMath::Abs(pdg)){
497	case 11: return 0; break;
498	case 211: return 1; break;
499	case 2212: return 2; break;
500	}
501	return -1;
502
503	}