[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 <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 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 = (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);
    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);
  }

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

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

  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();
    sprintf(name, "h_%s_pt", type[pid]);
    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 char * type[4] = {"Gamma", "K0", "Lambda", "ALambda"};
  char name[256] = "";
  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) sprintf(name, "h_%s_pt_S", type[pid]);
    else sprintf(name, "h_%s_pt_B", type[pid]);
    Float_t pT = esdV0->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(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 char * type[3] = {"Electron", "Pion", "Proton"};
  char name[256] = "";


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