[u/mrichter/AliRoot.git] / PWG3 / hfe / AliAnalysisTaskCheckV0tender.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 <sstream>

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

#include "AliAnalysisTaskCheckV0tender.h"

ClassImp(AliAnalysisTaskCheckV0tender)

//__________________________________________________________
AliAnalysisTaskCheckV0tender::AliAnalysisTaskCheckV0tender():
  AliAnalysisTaskSE("CheckV0tenderTask")
  , fOutput(0x0)
  , fColl(0x0)
  , fCollMC(0x0)
  , fEvents(0x0)
{
  //
  // Default Constructor
  //
}
//__________________________________________________________
AliAnalysisTaskCheckV0tender::AliAnalysisTaskCheckV0tender(const Char_t *name):
  AliAnalysisTaskSE(name)
  , fOutput(0x0)
  , fColl(0x0)
  , fCollMC(0x0)
  , fEvents(0x0)
{
  //
  // Default Constructor
  //
  DefineOutput(1, TH1F::Class());
  DefineOutput(2, TList::Class());

}
//__________________________________________________________
AliAnalysisTaskCheckV0tender::~AliAnalysisTaskCheckV0tender(){
  //
  // Destructor
  //

  if (fOutput) delete fOutput;
  //if (fColl) delete fColl;
  //if (fCollMC) delete fCollMC;
  if (fEvents) delete fEvents;
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tender::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");

  // 
  // 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 AliAnalysisTaskCheckV0tender::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;

  ProcessV0s();
  ProcessDaughters();

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

  fEvents->Fill(1.1);
  PostData(1, fEvents);
  PostData(2, fOutput);
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tender::Terminate(Option_t *){
  //
  // Do Post Processing
  //
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tender::ProcessV0s(){
  //
  // loop over the V0s and extract the information about
  // the V0s tagged by the V0 tender
  //

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

  Int_t nV0s = fInputEvent->GetNumberOfV0s();
  for(Int_t i=0; i<nV0s; ++i){
    AliESDv0 *esdV0 = (static_cast<AliESDEvent *>(fInputEvent))->GetV0(i);
    if(!esdV0) continue;
    if(!esdV0->GetOnFlyStatus()) continue; // Take only V0s from the On-the-fly v0 finder
    Int_t pid = GetTenderPidV0(esdV0);
    if(pid < 0) continue;
    fColl->Fill("h_NumberOf_V0s", pid);
    Float_t pT = esdV0->Pt();
    name = "h_" + type[pid] + "_pt";
    fColl->Fill(name, pT);
    Float_t mass = MassV0(esdV0, pid);    
    name = "h_" + type[pid] + "_mass";
    //printf(" -D: name: %s \n", name.Data());
    fColl->Fill(name, mass);
  }

}
//__________________________________________________________
void AliAnalysisTaskCheckV0tender::ProcessDaughters(){
  //
  // produce some check plots for V0 tender tagged single tracks
  //

  const TString type[3] = {"Electron", "Pion", "Proton"};
  TString name;

  Int_t nTracks = fInputEvent->GetNumberOfTracks();
  for(Int_t i=0; i<nTracks; ++i){
    AliESDtrack *track = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(i));
    if(!track) continue;
    Int_t  pid = GetTenderPidDaughter(track);
    if(pid < 0) continue;
    fColl->Fill("h_NumberOfDaughters", pid*1.0);
    Float_t pT = track->Pt();
    name = "h_" + type[pid] + "_pt";
    fColl->Fill(name, pT);
    
  }
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tender::ProcessV0sMC(){
  //
  // check all V0tender selected V0 on their true identity
  // 

  const Int_t pid2pdg[4] = {22, 310, 3122, -3122};
  const TString type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
  TString name;
  Int_t nV0s = fInputEvent->GetNumberOfV0s();

  Int_t nTracks = fInputEvent->GetNumberOfTracks();

  // V0 loop
  for(Int_t i=0; i<nV0s; ++i){
    Bool_t id = kFALSE;
    AliESDv0 *esdV0 = (static_cast<AliESDEvent *>(fInputEvent))->GetV0(i);
    if(!esdV0) continue;
    if(!esdV0->GetOnFlyStatus()) continue; // Take only V0s from the On-the-fly v0 finder
    Int_t pid = GetTenderPidV0(esdV0);
    if(pid < 0) continue;

    // both ESD daughtr tracks
    Int_t iN, iP;
    iN = iP = -1;
    iP = esdV0->GetPindex();
    iN = esdV0->GetNindex();    
    if(iN < 0 || iP < 0) continue;
    if(iN >= nTracks || iP >= nTracks) continue;    
    AliESDtrack *dP, *dN;
    dP = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
    dN = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));  
    if(!dN || !dP) continue;

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

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

    // labels of the mother particles
    Int_t lPm, lNm;
    lPm = mcP->GetMother();
    lNm = mcN->GetMother();
    if(lPm < 0) continue;
    AliMCParticle *m = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lPm)); 
    if(!m) continue;
    Int_t pdg = m->PdgCode();
    if((lPm == lNm) && (pdg == pid2pdg[pid])) id = kTRUE;

    if(id) name = "h_" + type[pid] + "_pt_S"; 
    else name = "h_" + type[pid] + "_pt_B"; 
    Float_t pT = esdV0->Pt();
    fCollMC->Fill(name, pT);

    if(id) name = "h_" + type[pid] + "_mass_S";
    else name = "h_" + type[pid] + "_mass_B";
    Float_t mass = MassV0(esdV0, pid);
    fCollMC->Fill(name, mass);

   }
}
//__________________________________________________________
void AliAnalysisTaskCheckV0tender::ProcessDaughtersMC(){
  //
  // 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 Int_t pid2pdg [3] = {11, 211, 2212};
  const TString type[3] = {"Electron", "Pion", "Proton"};
  TString name;


  Int_t nTracks = fInputEvent->GetNumberOfTracks();
  for(Int_t i=0; i<nTracks; ++i){
    Bool_t id = kFALSE;
    AliESDtrack *track = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(i));
    if(!track) continue;
    Int_t  pid = GetTenderPidDaughter(track);
    if(pid < 0) continue;
    Float_t pT = track->Pt();
    Int_t label = track->GetLabel();
    if(label < 0) continue;
    AliMCParticle *mcp = 0x0;
    mcp = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(label));
    if(!mcp) continue;
    Int_t pdg = TMath::Abs(mcp->PdgCode());
    if(pdg == pid2pdg[pid]) id = kTRUE;
    if(id) name = "h_" + type[pid] + "_pt_S";
    else name = "h_" + type[pid] + "_pt_B";
    fCollMC->Fill(name, pT);
  }
}
//__________________________________________________________
Int_t AliAnalysisTaskCheckV0tender::GetTenderPidV0(AliESDv0 * const v0){
  //
  // retrieve the PID nformation stored in the status flags by the train tender
  // 
  Int_t pid = -1;
  if(!v0){
    return pid;
  }
  Int_t nTimes = 0;
  if(v0->TestBit(BIT(14))){
    pid = 0;
    nTimes++;
  }
  if(v0->TestBit(BIT(15))){
    pid = 1;
    nTimes++;
  }
  if(v0->TestBit(BIT(16))){
    pid = 2;
    nTimes++;
  }
  if(v0->TestBit(BIT(17))){
    pid = 3;
    nTimes++;
  }
  if(nTimes > 1){
    AliWarning("V0 track labeled multiple times by the V0 tender");
    pid = -1;
  }    

  //printf(" -D: pid: %i \n", pid);

  return pid;
}
//__________________________________________________________
Int_t AliAnalysisTaskCheckV0tender::GetTenderPidDaughter(AliESDtrack * const track){
  //
  // retrieve the PID nformation stored in the status flags by the train tender
  // 

  Int_t pid = -1;
  if(!track){
    return pid;
  }
  Int_t nTimes = 0;
  if(track->TestBit(BIT(14))){
    pid = 0;
    nTimes++;
  }
  if(track->TestBit(BIT(15))){
    pid = 1;
    nTimes++;
  }
  if(track->TestBit(BIT(16))){
    pid = 2;
    nTimes++;
  }
  if(nTimes > 1){
    AliWarning("V0 track labeled multiple times by the V0 tender");
    pid = -1;
  }    
  return pid;
}
//__________________________________________________________
Float_t AliAnalysisTaskCheckV0tender::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 AliAnalysisTaskCheckV0tender::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;
}
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
e3ae862b	23	#include <sstream>
e3ae862b	24
3a72645a	25	#include <TH1F.h>
	26	#include <TList.h>
	27
	28	#include "AliAnalysisManager.h"
	29	#include "AliMCEventHandler.h"
	30	#include "AliESDInputHandler.h"
	31	#include "AliESDv0.h"
	32	#include "AliESDtrack.h"
	33	#include "AliMCParticle.h"
	34	#include "AliMCEvent.h"
	35
	36	#include "AliHFEtools.h"
	37	#include "AliHFEcollection.h"
	38
	39	#include "AliAnalysisTaskCheckV0tender.h"
	40
	41	ClassImp(AliAnalysisTaskCheckV0tender)
	42
	43	//__________________________________________________________
	44	AliAnalysisTaskCheckV0tender::AliAnalysisTaskCheckV0tender():
	45	AliAnalysisTaskSE("CheckV0tenderTask")
	46	, fOutput(0x0)
	47	, fColl(0x0)
	48	, fCollMC(0x0)
	49	, fEvents(0x0)
	50	{
	51	//
	52	// Default Constructor
	53	//
	54	}
	55	//__________________________________________________________
	56	AliAnalysisTaskCheckV0tender::AliAnalysisTaskCheckV0tender(const Char_t *name):
	57	AliAnalysisTaskSE(name)
	58	, fOutput(0x0)
	59	, fColl(0x0)
	60	, fCollMC(0x0)
	61	, fEvents(0x0)
	62	{
	63	//
	64	// Default Constructor
	65	//
	66	DefineOutput(1, TH1F::Class());
	67	DefineOutput(2, TList::Class());
	68
	69	}
	70	//__________________________________________________________
	71	AliAnalysisTaskCheckV0tender::~AliAnalysisTaskCheckV0tender(){
	72	//
	73	// Destructor
	74	//
	75
	76	if (fOutput) delete fOutput;
e3ae862b	77	//if (fColl) delete fColl;
e3ae862b	78	//if (fCollMC) delete fCollMC;
3a72645a	79	if (fEvents) delete fEvents;
	80	}
	81	//__________________________________________________________
	82	void AliAnalysisTaskCheckV0tender::UserCreateOutputObjects(){
	83	//
	84	// prepare output objects
	85	//
	86
	87	fOutput = new TList();
	88	fOutput->SetOwner();
	89	// Counter for number of events
	90	fEvents = new TH1I("nEvents", "NumberOfEvents", 1, 1, 2);
	91
	92	fColl = new AliHFEcollection("V0_QA", "tender V0s for data");
	93	fCollMC = new AliHFEcollection("V0_MC_QA", "tender V0s for MC");
	94
	95	//
	96	// Data histos
	97	//
	98
	99	// total number of tagged V0s
	100	fColl->CreateTH1F("h_NumberOf_V0s", "Number of tagged V0s; type; counts", 4, -0.5, 3.5);
	101	// pT spectra of the tagged V0s
	102	fColl->CreateTH1F("h_Gamma_pt", "p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	103	fColl->CreateTH1F("h_K0_pt", "p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	104	fColl->CreateTH1F("h_Lambda_pt", "p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	105	fColl->CreateTH1F("h_ALambda_pt", "p_{T} spectrum of tagged A-Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	106	// invariant mass of the V0s
	107	fColl->CreateTH1F("h_Gamma_mass", "Inv. Mass of the ", 100, 0., 0.1);
	108	fColl->CreateTH1F("h_K0_mass", "Inv. Mass of the ", 100, 0.45, 0.55);
	109	fColl->CreateTH1F("h_Lambda_mass", "Inv. Mass of the ", 100, 1.08, 1.14);
	110	fColl->CreateTH1F("h_ALambda_mass", "Inv. Mass of the ", 100, 1.08, 1.14);
	111
	112	// total number of tagged daughter particles (should correlate with number of V0s !
	113	fColl->CreateTH1F("h_NumberOfDaughters", "Number of tagged daughters; type; counts", 3, -0.5, 2.5);
	114	// pT spectra of tagged daughter particles
	115	fColl->CreateTH1F("h_Electron_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	116	fColl->CreateTH1F("h_Pion_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	117	fColl->CreateTH1F("h_Proton_pt", "p_{T} spectrum of tagged; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	118
	119	//
	120	// MC histos
	121	//
	122
	123	// pT spectra of the tagged V0s
	124	fCollMC->CreateTH1F("h_Gamma_pt_S", "MC-S: p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	125	fCollMC->CreateTH1F("h_K0_pt_S", "MC-S: p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	126	fCollMC->CreateTH1F("h_Lambda_pt_S", "MC-S: p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	127	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);
	128	fCollMC->CreateTH1F("h_Gamma_pt_B", "MC-B: p_{T} spectrum of tagged gammas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	129	fCollMC->CreateTH1F("h_K0_pt_B", "MC-B: p_{T} spectrum of tagged K0s; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	130	fCollMC->CreateTH1F("h_Lambda_pt_B", "MC-B: p_{T} spectrum of tagged Lambdas; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
	131	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);
	132	// invariant mass of the V0s
	133	fCollMC->CreateTH1F("h_Gamma_mass_S", "MC-S: Inv. Mass of the gamma; m (GeV/c^{2}); counts", 100, 0., 0.1);
	134	fCollMC->CreateTH1F("h_K0_mass_S", "MC-S: Inv. Mass of the K0; m (GeV/c^{2}); counts", 100, 0.45, 0.55);
	135	fCollMC->CreateTH1F("h_Lambda_mass_S", "MC-S: Inv. Mass of the Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
	136	fCollMC->CreateTH1F("h_ALambda_mass_S", "MC-S: Inv. Mass of the A-Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
	137	fCollMC->CreateTH1F("h_Gamma_mass_B", "MC-B: Inv. Mass of the gamma; m (GeV/c^{2}); counts", 100, 0., 0.1);
	138	fCollMC->CreateTH1F("h_K0_mass_B", "MC-B: Inv. Mass of the K0; m (GeV/c^{2}); counts", 100, 0.45, 0.55);
	139	fCollMC->CreateTH1F("h_Lambda_mass_B", "MC-B: Inv. Mass of the Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
	140	fCollMC->CreateTH1F("h_ALambda_mass_B", "MC-B: Inv. Mass of the A-Lambda; m (GeV/c^{2}); counts", 100, 1.08, 1.14);
	141	// pT spectra of tagged daughter particles
	142	fCollMC->CreateTH1F("h_Electron_pt_S", "MC-S: p_{T} spectrum of tagged electrons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
143	fCollMC->CreateTH1F("h_Pion_pt_S", "MC-S: p_{T} spectrum of tagged pions; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
144	fCollMC->CreateTH1F("h_Proton_pt_S", "MC-S: p_{T} spectrum of tagged protons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
145	fCollMC->CreateTH1F("h_Electron_pt_B", "MC-B: p_{T} spectrum of tagged electrons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
146	fCollMC->CreateTH1F("h_Pion_pt_B", "MC-B: p_{T} spectrum of tagged pions; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
147	fCollMC->CreateTH1F("h_Proton_pt_B", "MC-B: p_{T} spectrum of tagged protons; p_{T} (GeV/c); counts", 20, 0.1, 20, 0);
148
149
150	TList *tmp = fColl->GetList();
151	tmp->SetName(fColl->GetName());
152	fOutput->Add(tmp);
153	tmp = 0x0;
154	tmp = fCollMC->GetList();
155	tmp->SetName(fCollMC->GetName());
156	fOutput->Add(tmp);
157
158
159	}
160	//__________________________________________________________
161	void AliAnalysisTaskCheckV0tender::UserExec(Option_t *){
162	//
163	// Event Loop
164	//
bf892a6a	165
3a72645a	166	AliMCEventHandler* mcHandler = (dynamic_cast<AliMCEventHandler*>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler()));
bf892a6a	167	//AliESDInputHandler inh = dynamic_cast<AliESDInputHandler >(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
	168	//AliESDpid *workingPID = NULL;
	169	//if(inh && (workingPID = inh->GetESDpid())) workingPID = inh->GetESDpid();
	170	//else workingPID = AliHFEtools::GetDefaultPID(mcHandler ? kTRUE : kFALSE);
3a72645a	171
	172	// check the MC data
	173	if(fMCEvent && !mcHandler ) return;
	174	if(fMCEvent && !mcHandler->InitOk() ) return;
	175	if(fMCEvent && !mcHandler->TreeK() ) return;
	176	if(fMCEvent && !mcHandler->TreeTR() ) return;
	177
	178	ProcessV0s();
	179	ProcessDaughters();
	180
	181	if(fMCEvent){
	182	ProcessV0sMC();
	183	ProcessDaughtersMC();
	184	}
	185
	186	fEvents->Fill(1.1);
	187	PostData(1, fEvents);
	188	PostData(2, fOutput);
	189	}
	190	//__________________________________________________________
	191	void AliAnalysisTaskCheckV0tender::Terminate(Option_t *){
	192	//
	193	// Do Post Processing
	194	//
	195	}
	196	//__________________________________________________________
	197	void AliAnalysisTaskCheckV0tender::ProcessV0s(){
	198	//
	199	// loop over the V0s and extract the information about
	200	// the V0s tagged by the V0 tender
	201	//
	202
e3ae862b	203	const TString type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
e3ae862b	204	TString name;
3a72645a	205
	206	Int_t nV0s = fInputEvent->GetNumberOfV0s();
	207	for(Int_t i=0; i<nV0s; ++i){
bf892a6a	208	AliESDv0 esdV0 = (static_cast<AliESDEvent >(fInputEvent))->GetV0(i);
3a72645a	209	if(!esdV0) continue;
	210	if(!esdV0->GetOnFlyStatus()) continue; // Take only V0s from the On-the-fly v0 finder
	211	Int_t pid = GetTenderPidV0(esdV0);
e97c2edf	212	if(pid < 0) continue;
3a72645a	213	fColl->Fill("h_NumberOf_V0s", pid);
3a72645a	214	Float_t pT = esdV0->Pt();
e3ae862b	215	name = "h_" + type[pid] + "_pt";
3a72645a	216	fColl->Fill(name, pT);
e3ae862b	217	Float_t mass = MassV0(esdV0, pid);
	218	name = "h_" + type[pid] + "_mass";
	219	//printf(" -D: name: %s \n", name.Data());
3a72645a	220	fColl->Fill(name, mass);
	221	}
	222
	223	}
	224	//__________________________________________________________
	225	void AliAnalysisTaskCheckV0tender::ProcessDaughters(){
	226	//
	227	// produce some check plots for V0 tender tagged single tracks
	228	//
	229
e3ae862b	230	const TString type[3] = {"Electron", "Pion", "Proton"};
e3ae862b	231	TString name;
3a72645a	232
	233	Int_t nTracks = fInputEvent->GetNumberOfTracks();
	234	for(Int_t i=0; i<nTracks; ++i){
	235	AliESDtrack track = dynamic_cast<AliESDtrack>(fInputEvent->GetTrack(i));
	236	if(!track) continue;
	237	Int_t pid = GetTenderPidDaughter(track);
	238	if(pid < 0) continue;
	239	fColl->Fill("h_NumberOfDaughters", pid*1.0);
	240	Float_t pT = track->Pt();
e3ae862b	241	name = "h_" + type[pid] + "_pt";
3a72645a	242	fColl->Fill(name, pT);
	243
	244	}
	245	}
	246	//__________________________________________________________
	247	void AliAnalysisTaskCheckV0tender::ProcessV0sMC(){
	248	//
	249	// check all V0tender selected V0 on their true identity
	250	//
	251
	252	const Int_t pid2pdg[4] = {22, 310, 3122, -3122};
e3ae862b	253	const TString type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
e3ae862b	254	TString name;
3a72645a	255	Int_t nV0s = fInputEvent->GetNumberOfV0s();
	256
	257	Int_t nTracks = fInputEvent->GetNumberOfTracks();
	258
	259	// V0 loop
	260	for(Int_t i=0; i<nV0s; ++i){
	261	Bool_t id = kFALSE;
bf892a6a	262	AliESDv0 esdV0 = (static_cast<AliESDEvent >(fInputEvent))->GetV0(i);
3a72645a	263	if(!esdV0) continue;
	264	if(!esdV0->GetOnFlyStatus()) continue; // Take only V0s from the On-the-fly v0 finder
	265	Int_t pid = GetTenderPidV0(esdV0);
	266	if(pid < 0) continue;
	267
	268	// both ESD daughtr tracks
	269	Int_t iN, iP;
	270	iN = iP = -1;
	271	iP = esdV0->GetPindex();
	272	iN = esdV0->GetNindex();
	273	if(iN < 0 \|\| iP < 0) continue;
	274	if(iN >= nTracks \|\| iP >= nTracks) continue;
	275	AliESDtrack dP, dN;
	276	dP = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iP));
	277	dN = dynamic_cast<AliESDtrack *>(fInputEvent->GetTrack(iN));
	278	if(!dN \|\| !dP) continue;
	279
	280	// MC labels of the daughter tracks
	281	Int_t lN, lP;
	282	lN = dN->GetLabel();
	283	lP = dP->GetLabel();
	284	if(lN < 0 \|\| lP < 0) continue;
	285
	286	// MC daughter particles
	287	AliMCParticle mcP, mcN;
	288	mcP = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lP));
	289	mcN = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(lN));
	290	if(!mcP \|\| !mcN) continue;
	291
	292	// labels of the mother particles
	293	Int_t lPm, lNm;
	294	lPm = mcP->GetMother();
	295	lNm = mcN->GetMother();
	296	if(lPm < 0) continue;
	297	AliMCParticle m = dynamic_cast<AliMCParticle>(fMCEvent->GetTrack(lPm));
	298	if(!m) continue;
	299	Int_t pdg = m->PdgCode();
	300	if((lPm == lNm) && (pdg == pid2pdg[pid])) id = kTRUE;
	301
e3ae862b	302	if(id) name = "h_" + type[pid] + "_pt_S";
e3ae862b	303	else name = "h_" + type[pid] + "_pt_B";
3a72645a	304	Float_t pT = esdV0->Pt();
	305	fCollMC->Fill(name, pT);
	306
e3ae862b	307	if(id) name = "h_" + type[pid] + "_mass_S";
e3ae862b	308	else name = "h_" + type[pid] + "_mass_B";
3a72645a	309	Float_t mass = MassV0(esdV0, pid);
	310	fCollMC->Fill(name, mass);
	311
	312	}
	313	}
	314	//__________________________________________________________
	315	void AliAnalysisTaskCheckV0tender::ProcessDaughtersMC(){
	316	//
	317	// check the identity of the V0tender selected V0 daughters
	318	// !!! for positive check only the true identity plays a role here,
	319	// not the true V0 mother identity (e.g. selected electron could come
	320	// from primary vertex or pion dalitz deca or true gamma conversion) !!!
	321	//
	322
	323	const Int_t pid2pdg [3] = {11, 211, 2212};
e3ae862b	324	const TString type[3] = {"Electron", "Pion", "Proton"};
e3ae862b	325	TString name;
3a72645a	326
	327
	328	Int_t nTracks = fInputEvent->GetNumberOfTracks();
	329	for(Int_t i=0; i<nTracks; ++i){
	330	Bool_t id = kFALSE;
	331	AliESDtrack track = dynamic_cast<AliESDtrack>(fInputEvent->GetTrack(i));
	332	if(!track) continue;
	333	Int_t pid = GetTenderPidDaughter(track);
	334	if(pid < 0) continue;
	335	Float_t pT = track->Pt();
	336	Int_t label = track->GetLabel();
	337	if(label < 0) continue;
	338	AliMCParticle *mcp = 0x0;
	339	mcp = dynamic_cast<AliMCParticle*>(fMCEvent->GetTrack(label));
	340	if(!mcp) continue;
	341	Int_t pdg = TMath::Abs(mcp->PdgCode());
	342	if(pdg == pid2pdg[pid]) id = kTRUE;
e3ae862b	343	if(id) name = "h_" + type[pid] + "_pt_S";
e3ae862b	344	else name = "h_" + type[pid] + "_pt_B";
3a72645a	345	fCollMC->Fill(name, pT);
	346	}
	347	}
	348	//__________________________________________________________
	349	Int_t AliAnalysisTaskCheckV0tender::GetTenderPidV0(AliESDv0 * const v0){
	350	//
	351	// retrieve the PID nformation stored in the status flags by the train tender
	352	//
	353	Int_t pid = -1;
	354	if(!v0){
	355	return pid;
	356	}
	357	Int_t nTimes = 0;
	358	if(v0->TestBit(BIT(14))){
	359	pid = 0;
	360	nTimes++;
	361	}
	362	if(v0->TestBit(BIT(15))){
	363	pid = 1;
	364	nTimes++;
	365	}
	366	if(v0->TestBit(BIT(16))){
	367	pid = 2;
	368	nTimes++;
	369	}
	370	if(v0->TestBit(BIT(17))){
	371	pid = 3;
	372	nTimes++;
	373	}
	374	if(nTimes > 1){
	375	AliWarning("V0 track labeled multiple times by the V0 tender");
	376	pid = -1;
	377	}
	378
	379	//printf(" -D: pid: %i \n", pid);
	380
	381	return pid;
	382	}
	383	//__________________________________________________________
	384	Int_t AliAnalysisTaskCheckV0tender::GetTenderPidDaughter(AliESDtrack * const track){
	385	//
	386	// retrieve the PID nformation stored in the status flags by the train tender
	387	//
	388
	389	Int_t pid = -1;
	390	if(!track){
	391	return pid;
	392	}
	393	Int_t nTimes = 0;
	394	if(track->TestBit(BIT(14))){
	395	pid = 0;
	396	nTimes++;
	397	}
	398	if(track->TestBit(BIT(15))){
	399	pid = 1;
	400	nTimes++;
	401	}
	402	if(track->TestBit(BIT(16))){
	403	pid = 2;
	404	nTimes++;
	405	}
	406	if(nTimes > 1){
	407	AliWarning("V0 track labeled multiple times by the V0 tender");
	408	pid = -1;
409	}
410	return pid;
411	}
412	//__________________________________________________________
413	Float_t AliAnalysisTaskCheckV0tender::MassV0(AliESDv0 * const v0, Int_t id){
414	//
415	// Get the V0 effective mass
416	//
417
418	Float_t mass = -0.1;
419	Bool_t sign = CheckSigns(v0);
420	if(0 == id){
421	mass = v0->GetEffMass(0, 0);
422	}
423	else if(1 == id){
424	mass = v0->GetEffMass(2, 2);
425	}
426	else if(2 == id){
427	mass = (sign) ? v0->GetEffMass(4, 2) : v0->GetEffMass(2, 4);
428	}
429	else if(3 == id){
430	mass = (sign) ? v0->GetEffMass(2, 4) : v0->GetEffMass(4, 2);
431	}
432	else{
433	AliWarning(Form("Unrecognized V0 id: %i", id));
434	}
435
436	return mass;
437
438	}
439	//__________________________________________________________
440	Bool_t AliAnalysisTaskCheckV0tender::CheckSigns(AliESDv0 * const v0){
441	//
442	// check wheter the sign was correctly applied to
443	// V0 daughter tracks
444	// This function should become obsolete once the V0 finder will be updated (fixed)
445	//
446
447	Bool_t correct = kFALSE;
448
449	Int_t pIndex = 0, nIndex = 0;
450	pIndex = v0->GetPindex();
451	nIndex = v0->GetNindex();
452
453	AliESDtrack* d[2];
454	d[0] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(pIndex));
455	d[1] = dynamic_cast<AliESDtrack*>(fInputEvent->GetTrack(nIndex));
456
457	Int_t sign[2];
458	sign[0] = (int)d[0]->GetSign();
459	sign[1] = (int)d[1]->GetSign();
460
461	if(-1 == sign[0] && 1 == sign[1]){
462	correct = kFALSE;
463	//v0->SetIndex(0, pIndex); // set the index of the negative v0 track
464	//v0->SetIndex(1, nIndex); // set the index of the positive v0 track
465	}
466	else{
467	correct = kTRUE;
468	}
469
470	//pIndex = v0->GetPindex();
471	//nIndex = v0->GetNindex();
472	//printf("-D2: P: %i, N: %i\n", pIndex, nIndex);
473
474	return correct;
475	}