[u/mrichter/AliRoot.git] / HLT / trigger / AliHLTD0Trigger.cxx

// $Id: AliHLTD0Trigger.cxx 
//**************************************************************************
//* This file is property of and copyright by the ALICE HLT Project        * 
//* ALICE Experiment at CERN, All rights reserved.                         *
//*                                                                        *
//* Primary Authors: Gaute Ovrebekk                                        *
//*                  for The ALICE HLT Project.                            *
//*                                                                        *
//* 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.                  *
//**************************************************************************

/// @file   AliHLTD0Trigger.cxx
/// @author Gaute Ovrebekk
/// @date   2009-10-28
/// @brief  HLT trigger component for D0->Kpi

// see header file for class documentation
// or
// refer to README to build package
// or
// visit http://web.ift.uib.no/~kjeks/doc/alice-hlt

#include "AliHLTD0Trigger.h"
#include "AliESDEvent.h"
#include "AliESDv0.h"
#include "AliHLTTriggerDecision.h"
#include "AliHLTDomainEntry.h"
#include "AliHLTGlobalBarrelTrack.h"
#include "TObjArray.h"
#include "TObjString.h"
#include "TDatabasePDG.h"
#include "AliESDVertex.h"
#include "TH1F.h"
#include "AliHLTD0toKpi.h"
#include "AliAODVertex.h"
#include "AliESDVertex.h"
#include "AliAODRecoDecay.h"

/** ROOT macro for the implementation of ROOT specific class methods */
ClassImp(AliHLTD0Trigger)

AliHLTD0Trigger::AliHLTD0Trigger()
  : AliHLTTrigger()
  , fPtMin(0.0)
  , fdca(0.0)
  , finvMass(0.0)     
  , fcosThetaStar(0.0)
  , fd0(0.0) 
  , fd0d0(0.0)
  , fcosPoint(0.0)
  , fplothisto(false)
  , fUseV0(false)
  , mD0PDG(TDatabasePDG::Instance()->GetParticle(421)->Mass())
  , fD0mass(NULL)
  , fPos()
  , fNeg()
  , fd0calc(NULL)                  
  , ftwoTrackArray(NULL)
  , fTotalD0(0)
  , fVertex(NULL)
  , fField(0)
{
  
  // see header file for class documentation
  // or
  // refer to README to build package
  // or
  // visit http://web.ift.uib.no/~kjeks/doc/alice-hlt

}

const char* AliHLTD0Trigger::fgkOCDBEntry="HLT/ConfigHLT/D0Trigger";

AliHLTD0Trigger::~AliHLTD0Trigger()
{
  //if(fd0calc){delete fd0calc;}  
  //if(fD0mass){delete fD0mass;}
  //if(ftwoTrackArray){delete ftwoTrackArray;}
  // see header file for class documentation
}
  
const char* AliHLTD0Trigger::GetTriggerName() const
{
  // see header file for class documentation
  return "D0Trigger";
}

AliHLTComponent* AliHLTD0Trigger::Spawn()
{
  // see header file for class documentation
  return new AliHLTD0Trigger;
}

int AliHLTD0Trigger::DoTrigger()
{
  // -- Iterator over Data Blocks --
  //const AliHLTComponentBlockData* iter = NULL;

  if (!IsDataEvent()) return 0;

  Int_t nD0=0;
  TString description;

  for ( const TObject *iter = GetFirstInputObject(kAliHLTDataTypeESDObject); iter != NULL; iter = GetNextInputObject() ) {   
    if(fUseV0){
      nD0=RecV0(iter);
    }
    else{
       AliESDEvent *event = dynamic_cast<AliESDEvent*>(const_cast<TObject*>( iter ) );
       event->GetStdContent();
       fField = event->GetMagneticField();
       const AliESDVertex* pv = event->GetPrimaryVertexTracks();
       fVertex =  new AliESDVertex(*pv);
       if(fVertex->GetNContributors()<2){
	 HLTWarning("Contributors in ESD vertex to low or not been set");
	 continue;
       }
       for(Int_t it=0;it<event->GetNumberOfTracks();it++){
	 SingleTrackSelect(event->GetTrack(it));
       }
       
       nD0=RecD0();
    }
  }

  for ( const TObject *iter = GetFirstInputObject(kAliHLTDataTypeESDVertex|kAliHLTDataOriginOut); 
	iter != NULL; iter = GetNextInputObject() ) { 
    fVertex = dynamic_cast<AliESDVertex*>(const_cast<TObject*>( iter ));
    if(!fVertex){
      HLTError("Vertex object is corrupted");
      //iResult = -EINVAL;    
    }
  }  
   
  for ( const AliHLTComponentBlockData* iter = GetFirstInputBlock(kAliHLTDataTypeTrack|kAliHLTDataOriginITS); 
	iter != NULL; iter = GetNextInputBlock() ) { 
    vector<AliHLTGlobalBarrelTrack> tracksVector;
    AliHLTGlobalBarrelTrack::ConvertTrackDataArray(reinterpret_cast<const AliHLTTracksData*>(iter->fPtr), iter->fSize, tracksVector);
    
    fField = GetBz();
    for(UInt_t i=0;i<tracksVector.size();i++){
      SingleTrackSelect(&tracksVector[i]);
    }
    nD0=RecD0();
  }    

  fTotalD0+=nD0;
   
  ftwoTrackArray->Clear();
  fPos.clear();
  fNeg.clear();
     
  HLTInfo("Number of D0 found: %d",nD0);
  HLTInfo("Total Number of D0 found: %d",fTotalD0);

  if(fplothisto){PushBack( (TObject*) fD0mass, kAliHLTDataTypeHistogram,0);}
  
  //if (iResult>=0) {
  if (1) {
   
    if (nD0>=1) {
      description.Form("Event contains %d D0(s)", nD0);
      SetDescription(description.Data());
      // Enable the central detectors for readout.
      GetReadoutList().Enable(
			      AliHLTReadoutList::kITSSPD |
			      AliHLTReadoutList::kITSSDD |
			      AliHLTReadoutList::kITSSSD |
			      AliHLTReadoutList::kTPC |
			      AliHLTReadoutList::kTRD |
			      AliHLTReadoutList::kTOF |
			      AliHLTReadoutList::kHMPID |
			      AliHLTReadoutList::kPHOS
			      );
      // Add the available HLT information for readout too.
      GetTriggerDomain().Add("CLUSTERS", "TPC ");
      TriggerEvent(true);
      return 0;
    }
    description.Form("No D0");
  } else {
    description.Form("No input blocks found");
  }
  SetDescription(description.Data());
  TriggerEvent(false);
  //return iResult;
  return 0;
}

int AliHLTD0Trigger::DoInit(int argc, const char** argv)
{
  
  fd0calc = new AliHLTD0toKpi();
  ftwoTrackArray = new TObjArray(2);

  fplothisto=false;
  // see header file for class documentation
  fD0mass = new TH1F("hMass","D^{0} mass plot",100,1.7,2);
  // first configure the default
  int iResult=0;
  if (iResult>=0) iResult=ConfigureFromCDBTObjString(fgkOCDBEntry);

  // configure from the command line parameters if specified
  if (iResult>=0 && argc>0)
    iResult=ConfigureFromArgumentString(argc, argv);
  return iResult;
}

int AliHLTD0Trigger::DoDeinit()
{
  // see header file for class documentation
  if(fd0calc){delete fd0calc;}  
  if(fD0mass){delete fD0mass;}
  if(ftwoTrackArray){delete ftwoTrackArray;}
  if(fVertex){delete fVertex;}
  return 0;
}

int AliHLTD0Trigger::Reconfigure(const char* cdbEntry, const char* /*chainId*/)
{
  // see header file for class documentation

  // configure from the specified antry or the default one
  const char* entry=cdbEntry;
  if (!entry || entry[0]==0) {
    entry=fgkOCDBEntry;
  }

  return ConfigureFromCDBTObjString(entry);
}

int AliHLTD0Trigger::ScanConfigurationArgument(int argc, const char** argv)
{
  // see header file for class documentation
  if (argc<=0) return 0;
  int i=0;
  TString argument=argv[i];
  // -minpt for decay
  if (argument.CompareTo("-pt")==0) {
    if (++i>=argc) return -EPROTO;
    argument=argv[i];
    fPtMin=argument.Atof();
    return 2;
  }    
  // minimum dca for decay tracks
  if (argument.CompareTo("-dca")==0) {
    if (++i>=argc) return -EPROTO;
    argument=argv[i];
    fdca=argument.Atof();
    return 2;
  }
  // inv. mass half width.
  if (argument.CompareTo("-invmass")==0) {
    if (++i>=argc) return -EPROTO;
    argument=argv[i];
    finvMass=argument.Atof();
    return 2;
  }

// cos theta for decay angle
  if (argument.CompareTo("-costhetastar")==0) {
    if (++i>=argc) return -EPROTO;
    argument=argv[i];
    fcosThetaStar=argument.Atof();
    return 2;
  }

  // impact parameter for decay
  if (argument.CompareTo("-d0")==0) {
    if (++i>=argc) return -EPROTO;
    argument=argv[i];
    fd0=argument.Atof();
    return 2;
  }
  // product of impact parameter
  if (argument.CompareTo("-d0d0")==0) {
    if (++i>=argc) return -EPROTO;
    argument=argv[i];
    fd0d0=argument.Atof();
    return 2;
  }
  // product of impact parameter
  if (argument.CompareTo("-cospoint")==0) {
    if (++i>=argc) return -EPROTO;
    argument=argv[i];
    fcosPoint=argument.Atof();
    return 2;
  }
  if (argument.CompareTo("-plothistogram")==0) {
    fplothisto=true;
    return 1;
  }
  if (argument.CompareTo("-usev0")==0) {
    fUseV0=true;
    return 1;
  }

  // unknown argument
  return -EINVAL;
}

void AliHLTD0Trigger::SingleTrackSelect(AliExternalTrackParam* t){
  // Offline har || på disse kuttene på de to henfallsproduktene 
  Double_t pv[3];
  fVertex->GetXYZ(pv);

  if(t->Pt()<fPtMin){return;}
  if(TMath::Abs(t->GetD(pv[0],pv[1],fField)) > fd0){return;}

  if(t->Charge()>0){
    fPos.push_back(t);
  }
  else{
    fNeg.push_back(t);
  }
}

Int_t AliHLTD0Trigger::RecD0(){
  
  int nD0=0;
  Double_t D0,D0bar,xdummy,ydummy; 
  Double_t d0[2];
  Double_t svpos[3];
  Double_t pvpos[3];
  
  if(!fVertex){
    HLTError("No Vertex is set");
    return 0;
  }
  fVertex->GetXYZ(pvpos);
    
  for(UInt_t ip=0;ip<fPos.size();ip++){
    AliExternalTrackParam *tP=fPos[ip];
    for(UInt_t in=0;in<fNeg.size();in++){
      AliExternalTrackParam *tN=fNeg[in];
          
      tP->PropagateToDCA(fVertex,fField,kVeryBig);  //do I need this??????
      tN->PropagateToDCA(fVertex,fField,kVeryBig);
      
      Double_t dcatPtN = tP->GetDCA(tN,fField,xdummy,ydummy);
      if(dcatPtN>fdca) { continue; }
      
      ftwoTrackArray->AddAt(tP,0);
      ftwoTrackArray->AddAt(tN,1);
      AliAODVertex *vertexp1n1 = fd0calc->ReconstructSecondaryVertex(ftwoTrackArray,fField,fVertex);
      if(!vertexp1n1) { 
	ftwoTrackArray->Clear();
	continue; 
      }
      
      vertexp1n1->GetXYZ(svpos);
      
      tP->PropagateToDCA(vertexp1n1,fField,kVeryBig); 
      tN->PropagateToDCA(vertexp1n1,fField,kVeryBig);
      
      /*
      Double_t px[2],py[2],pz[2];
      Double_t momentum[3];
      tP->GetPxPyPz(momentum);
      px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
      tN->GetPxPyPz(momentum);
      px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];

      Short_t dummycharge=0;
      Double_t *dummyd0 = new Double_t[2];
      Int_t nprongs = 2;

      for(Int_t ipr=0;ipr<nprongs;ipr++) dummyd0[ipr]=0.;
      AliAODRecoDecay *rd = new AliAODRecoDecay(0x0,nprongs,dummycharge,px,py,pz,dummyd0);
      delete [] dummyd0; dummyd0=NULL;

      UInt_t pdg2[2],pdg2bar[2];
      Double_t mPDG,minv,minvbar;

      pdg2[0]=211; pdg2[1]=321; pdg2bar[0]=321; pdg2bar[1]=211;
      minv = rd->InvMass(nprongs,pdg2);
      minvbar = rd->InvMass(nprongs,pdg2bar);
      if(TMath::Abs(minv-mD0PDG)>finvMass && TMath::Abs(minv-mD0PDG)>finvMass) {continue; delete vertexp1n1; delete rd;}
      */
      if((TMath::Abs(fd0calc->InvMass(tN,tP)-mD0PDG)) > finvMass && TMath::Abs((fd0calc->InvMass(tP,tN))-mD0PDG) > finvMass){continue;}
      fd0calc->cosThetaStar(tN,tP,D0,D0bar);
      if(TMath::Abs(D0) > fcosThetaStar && TMath::Abs(D0bar) > fcosThetaStar){continue;}
      d0[0] = tP->GetD(pvpos[0],pvpos[1],fField);
      d0[1] = tN->GetD(pvpos[0],pvpos[1],fField);
      if((d0[0]*d0[1]) > fd0d0){continue;}
      if(fd0calc->pointingAngle(tN,tP,pvpos,svpos) < fcosPoint){continue;}
      
      if(fplothisto){
	//fD0mass->Fill(minv);
	//fD0mass->Fill(minvbar);
	fD0mass->Fill(fd0calc->InvMass(tN,tP));
	fD0mass->Fill(fd0calc->InvMass(tP,tN));
	/*
	if((fd0calc->InvMass(tN,tP) - mD0PDG) > finvMass){
	  fD0mass->Fill(fd0calc->InvMass(tN,tP));
	}
	else{
	  fD0mass->Fill(fd0calc->InvMass(tP,tN));
	  }
	*/
      }
      
      nD0++;
      delete vertexp1n1;
    }
  }
  return nD0;
}

Int_t AliHLTD0Trigger::RecV0(const TObject* iter){
  int nD0=0;
  Double_t d0[2];
  Double_t D0,D0bar; 
  Double_t svpos[3];
  Double_t pvpos[3];
  
  AliESDEvent *event = dynamic_cast<AliESDEvent*>(const_cast<TObject*>( iter ) );
  event->GetStdContent();
  Int_t nV0 = event->GetNumberOfV0s();
  Double_t field = event->GetMagneticField();
  const AliESDVertex* pv = event->GetPrimaryVertexTracks();
  pv->GetXYZ(pvpos);

  for (Int_t iv=0; iv<nV0; iv++) {
      
      AliESDtrack *tN=event->GetTrack( event->GetV0(iv)->GetNindex());
      AliESDtrack *tP=event->GetTrack( event->GetV0(iv)->GetPindex());      
      
      if(tN->Pt()<fPtMin && tP->Pt()<fPtMin){continue;} //||????
      
      d0[0] = tP->GetD(pvpos[0],pvpos[1],field);
      d0[1] = tN->GetD(pvpos[0],pvpos[1],field);
      
      if(d0[0]>fd0 && d0[0]>fd0){continue;} // make sure < or>
      
      event->GetV0(iv)->GetXYZ(svpos[0],svpos[1],svpos[2]);
      
      if(!tN->PropagateTo(svpos[0],field) && !tP->PropagateTo(svpos[0],field)){
      	HLTInfo("Tracks could not be propagated to secondary vertex");
      	continue;
      }
      
      Double_t tmp1, tmp2;
      if(tN->GetDCA(tP,field,tmp1,tmp2) > fdca){continue;}
      
      if((fd0calc->InvMass(tN,tP) - mD0PDG) > finvMass && (fd0calc->InvMass(tP,tN) - mD0PDG) > finvMass){continue;}
      fd0calc->cosThetaStar(tN,tP,D0,D0bar);
      if(D0 > fcosThetaStar && D0bar > fcosThetaStar){continue;}
      if((d0[0]*d0[1]) > fd0d0){continue;}
      if(fd0calc->pointingAngle(tN,tP,pvpos,svpos) < fcosPoint){continue;}
      
      nD0++;
      if((fd0calc->InvMass(tN,tP) - mD0PDG) > finvMass){
	fD0mass->Fill(fd0calc->InvMass(tN,tP));
      }
      else{
	fD0mass->Fill(fd0calc->InvMass(tP,tN));
      }
  }
  return nD0;
  
}
Commit	Line	Data
5f4502cc	1	// $Id: AliHLTD0Trigger.cxx
	2	//**************************************************************************
	3	//* This file is property of and copyright by the ALICE HLT Project *
	4	//* ALICE Experiment at CERN, All rights reserved. *
	5	//* *
	6	//* Primary Authors: Gaute Ovrebekk *
	7	//* for The ALICE HLT Project. *
	8	//* *
	9	//* Permission to use, copy, modify and distribute this software and its *
	10	//* documentation strictly for non-commercial purposes is hereby granted *
	11	//* without fee, provided that the above copyright notice appears in all *
	12	//* copies and that both the copyright notice and this permission notice *
	13	//* appear in the supporting documentation. The authors make no claims *
	14	//* about the suitability of this software for any purpose. It is *
	15	//* provided "as is" without express or implied warranty. *
	16	//**************************************************************************
	17
	18	/// @file AliHLTD0Trigger.cxx
	19	/// @author Gaute Ovrebekk
	20	/// @date 2009-10-28
	21	/// @brief HLT trigger component for D0->Kpi
	22
	23	// see header file for class documentation
	24	// or
	25	// refer to README to build package
	26	// or
	27	// visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
	28
	29	#include "AliHLTD0Trigger.h"
	30	#include "AliESDEvent.h"
5f4502cc	31	#include "AliESDv0.h"
	32	#include "AliHLTTriggerDecision.h"
	33	#include "AliHLTDomainEntry.h"
	34	#include "AliHLTGlobalBarrelTrack.h"
	35	#include "TObjArray.h"
	36	#include "TObjString.h"
	37	#include "TDatabasePDG.h"
	38	#include "AliESDVertex.h"
	39	#include "TH1F.h"
	40	#include "AliHLTD0toKpi.h"
9929f8f5	41	#include "AliAODVertex.h"
629b904b	42	#include "AliESDVertex.h"
3a626a12	43	#include "AliAODRecoDecay.h"
5f4502cc	44
	45	/** ROOT macro for the implementation of ROOT specific class methods */
	46	ClassImp(AliHLTD0Trigger)
	47
	48	AliHLTD0Trigger::AliHLTD0Trigger()
	49	: AliHLTTrigger()
	50	, fPtMin(0.0)
	51	, fdca(0.0)
	52	, finvMass(0.0)
	53	, fcosThetaStar(0.0)
	54	, fd0(0.0)
	55	, fd0d0(0.0)
	56	, fcosPoint(0.0)
9929f8f5	57	, fplothisto(false)
	58	, fUseV0(false)
	59	, mD0PDG(TDatabasePDG::Instance()->GetParticle(421)->Mass())
5f4502cc	60	, fD0mass(NULL)
9929f8f5	61	, fPos()
	62	, fNeg()
	63	, fd0calc(NULL)
	64	, ftwoTrackArray(NULL)
	65	, fTotalD0(0)
629b904b	66	, fVertex(NULL)
629b904b	67	, fField(0)
5f4502cc	68	{
9929f8f5	69
5f4502cc	70	// see header file for class documentation
	71	// or
	72	// refer to README to build package
	73	// or
	74	// visit http://web.ift.uib.no/~kjeks/doc/alice-hlt
	75
	76	}
	77
	78	const char* AliHLTD0Trigger::fgkOCDBEntry="HLT/ConfigHLT/D0Trigger";
	79
	80	AliHLTD0Trigger::~AliHLTD0Trigger()
	81	{
9929f8f5	82	//if(fd0calc){delete fd0calc;}
	83	//if(fD0mass){delete fD0mass;}
	84	//if(ftwoTrackArray){delete ftwoTrackArray;}
5f4502cc	85	// see header file for class documentation
5f4502cc	86	}
9929f8f5	87
5f4502cc	88	const char* AliHLTD0Trigger::GetTriggerName() const
	89	{
	90	// see header file for class documentation
	91	return "D0Trigger";
	92	}
	93
	94	AliHLTComponent* AliHLTD0Trigger::Spawn()
	95	{
	96	// see header file for class documentation
	97	return new AliHLTD0Trigger;
	98	}
	99
	100	int AliHLTD0Trigger::DoTrigger()
	101	{
9929f8f5	102	// -- Iterator over Data Blocks --
9929f8f5	103	//const AliHLTComponentBlockData* iter = NULL;
5f4502cc	104
9929f8f5	105	if (!IsDataEvent()) return 0;
5f4502cc	106
9929f8f5	107	Int_t nD0=0;
9929f8f5	108	TString description;
5f4502cc	109
9929f8f5	110	for ( const TObject *iter = GetFirstInputObject(kAliHLTDataTypeESDObject); iter != NULL; iter = GetNextInputObject() ) {
	111	if(fUseV0){
	112	nD0=RecV0(iter);
	113	}
	114	else{
629b904b	115	AliESDEvent event = dynamic_cast<AliESDEvent>(const_cast<TObject*>( iter ) );
	116	event->GetStdContent();
	117	fField = event->GetMagneticField();
	118	const AliESDVertex* pv = event->GetPrimaryVertexTracks();
	119	fVertex = new AliESDVertex(*pv);
3a626a12	120	if(fVertex->GetNContributors()<2){
	121	HLTWarning("Contributors in ESD vertex to low or not been set");
	122	continue;
	123	}
629b904b	124	for(Int_t it=0;it<event->GetNumberOfTracks();it++){
	125	SingleTrackSelect(event->GetTrack(it));
	126	}
	127
	128	nD0=RecD0();
5f4502cc	129	}
5f4502cc	130	}
9929f8f5	131
3a626a12	132	for ( const TObject *iter = GetFirstInputObject(kAliHLTDataTypeESDVertex\|kAliHLTDataOriginOut);
629b904b	133	iter != NULL; iter = GetNextInputObject() ) {
	134	fVertex = dynamic_cast<AliESDVertex>(const_cast<TObject>( iter ));
	135	if(!fVertex){
3a626a12	136	HLTError("Vertex object is corrupted");
629b904b	137	//iResult = -EINVAL;
	138	}
	139	}
	140
	141	for ( const AliHLTComponentBlockData* iter = GetFirstInputBlock(kAliHLTDataTypeTrack\|kAliHLTDataOriginITS);
	142	iter != NULL; iter = GetNextInputBlock() ) {
	143	vector<AliHLTGlobalBarrelTrack> tracksVector;
	144	AliHLTGlobalBarrelTrack::ConvertTrackDataArray(reinterpret_cast<const AliHLTTracksData*>(iter->fPtr), iter->fSize, tracksVector);
	145
	146	fField = GetBz();
	147	for(UInt_t i=0;i<tracksVector.size();i++){
	148	SingleTrackSelect(&tracksVector[i]);
	149	}
	150	nD0=RecD0();
9929f8f5	151	}
	152
	153	fTotalD0+=nD0;
	154
	155	ftwoTrackArray->Clear();
	156	fPos.clear();
	157	fNeg.clear();
629b904b	158
	159	HLTInfo("Number of D0 found: %d",nD0);
	160	HLTInfo("Total Number of D0 found: %d",fTotalD0);
5f4502cc	161
	162	if(fplothisto){PushBack( (TObject*) fD0mass, kAliHLTDataTypeHistogram,0);}
	163
9929f8f5	164	//if (iResult>=0) {
9929f8f5	165	if (1) {
5f4502cc	166
	167	if (nD0>=1) {
	168	description.Form("Event contains %d D0(s)", nD0);
	169	SetDescription(description.Data());
	170	// Enable the central detectors for readout.
	171	GetReadoutList().Enable(
	172	AliHLTReadoutList::kITSSPD \|
	173	AliHLTReadoutList::kITSSDD \|
	174	AliHLTReadoutList::kITSSSD \|
	175	AliHLTReadoutList::kTPC \|
	176	AliHLTReadoutList::kTRD \|
	177	AliHLTReadoutList::kTOF \|
	178	AliHLTReadoutList::kHMPID \|
	179	AliHLTReadoutList::kPHOS
	180	);
	181	// Add the available HLT information for readout too.
	182	GetTriggerDomain().Add("CLUSTERS", "TPC ");
	183	TriggerEvent(true);
	184	return 0;
	185	}
	186	description.Form("No D0");
	187	} else {
	188	description.Form("No input blocks found");
	189	}
	190	SetDescription(description.Data());
	191	TriggerEvent(false);
9929f8f5	192	//return iResult;
9929f8f5	193	return 0;
5f4502cc	194	}
	195
	196	int AliHLTD0Trigger::DoInit(int argc, const char** argv)
	197	{
9929f8f5	198
	199	fd0calc = new AliHLTD0toKpi();
	200	ftwoTrackArray = new TObjArray(2);
	201
5f4502cc	202	fplothisto=false;
5f4502cc	203	// see header file for class documentation
9929f8f5	204	fD0mass = new TH1F("hMass","D^{0} mass plot",100,1.7,2);
5f4502cc	205	// first configure the default
	206	int iResult=0;
	207	if (iResult>=0) iResult=ConfigureFromCDBTObjString(fgkOCDBEntry);
	208
	209	// configure from the command line parameters if specified
	210	if (iResult>=0 && argc>0)
	211	iResult=ConfigureFromArgumentString(argc, argv);
	212	return iResult;
	213	}
	214
	215	int AliHLTD0Trigger::DoDeinit()
	216	{
	217	// see header file for class documentation
9929f8f5	218	if(fd0calc){delete fd0calc;}
	219	if(fD0mass){delete fD0mass;}
	220	if(ftwoTrackArray){delete ftwoTrackArray;}
629b904b	221	if(fVertex){delete fVertex;}
5f4502cc	222	return 0;
	223	}
	224
	225	int AliHLTD0Trigger::Reconfigure(const char* cdbEntry, const char* /chainId/)
	226	{
	227	// see header file for class documentation
	228
	229	// configure from the specified antry or the default one
	230	const char* entry=cdbEntry;
	231	if (!entry \|\| entry[0]==0) {
	232	entry=fgkOCDBEntry;
	233	}
	234
	235	return ConfigureFromCDBTObjString(entry);
	236	}
	237
	238	int AliHLTD0Trigger::ScanConfigurationArgument(int argc, const char** argv)
	239	{
	240	// see header file for class documentation
	241	if (argc<=0) return 0;
	242	int i=0;
	243	TString argument=argv[i];
	244	// -minpt for decay
	245	if (argument.CompareTo("-pt")==0) {
	246	if (++i>=argc) return -EPROTO;
	247	argument=argv[i];
	248	fPtMin=argument.Atof();
	249	return 2;
	250	}
	251	// minimum dca for decay tracks
	252	if (argument.CompareTo("-dca")==0) {
	253	if (++i>=argc) return -EPROTO;
	254	argument=argv[i];
	255	fdca=argument.Atof();
	256	return 2;
	257	}
	258	// inv. mass half width.
	259	if (argument.CompareTo("-invmass")==0) {
	260	if (++i>=argc) return -EPROTO;
	261	argument=argv[i];
	262	finvMass=argument.Atof();
	263	return 2;
	264	}
	265
	266	// cos theta for decay angle
	267	if (argument.CompareTo("-costhetastar")==0) {
	268	if (++i>=argc) return -EPROTO;
	269	argument=argv[i];
	270	fcosThetaStar=argument.Atof();
	271	return 2;
	272	}
	273
	274	// impact parameter for decay
	275	if (argument.CompareTo("-d0")==0) {
	276	if (++i>=argc) return -EPROTO;
	277	argument=argv[i];
	278	fd0=argument.Atof();
	279	return 2;
	280	}
	281	// product of impact parameter
	282	if (argument.CompareTo("-d0d0")==0) {
	283	if (++i>=argc) return -EPROTO;
	284	argument=argv[i];
	285	fd0d0=argument.Atof();
286	return 2;
287	}
288	// product of impact parameter
289	if (argument.CompareTo("-cospoint")==0) {
290	if (++i>=argc) return -EPROTO;
291	argument=argv[i];
292	fcosPoint=argument.Atof();
293	return 2;
294	}
295	if (argument.CompareTo("-plothistogram")==0) {
5f4502cc	296	fplothisto=true;
9929f8f5	297	return 1;
	298	}
	299	if (argument.CompareTo("-usev0")==0) {
	300	fUseV0=true;
	301	return 1;
5f4502cc	302	}
9929f8f5	303
5f4502cc	304	// unknown argument
	305	return -EINVAL;
	306	}
9929f8f5	307
629b904b	308	void AliHLTD0Trigger::SingleTrackSelect(AliExternalTrackParam* t){
9929f8f5	309	// Offline har \|\| på disse kuttene på de to henfallsproduktene
629b904b	310	Double_t pv[3];
	311	fVertex->GetXYZ(pv);
	312
9929f8f5	313	if(t->Pt()<fPtMin){return;}
629b904b	314	if(TMath::Abs(t->GetD(pv[0],pv[1],fField)) > fd0){return;}
9929f8f5	315
	316	if(t->Charge()>0){
	317	fPos.push_back(t);
	318	}
	319	else{
	320	fNeg.push_back(t);
	321	}
	322	}
	323
629b904b	324	Int_t AliHLTD0Trigger::RecD0(){
9929f8f5	325
	326	int nD0=0;
	327	Double_t D0,D0bar,xdummy,ydummy;
	328	Double_t d0[2];
	329	Double_t svpos[3];
	330	Double_t pvpos[3];
	331
629b904b	332	if(!fVertex){
	333	HLTError("No Vertex is set");
	334	return 0;
9929f8f5	335	}
629b904b	336	fVertex->GetXYZ(pvpos);
	337
	338	for(UInt_t ip=0;ip<fPos.size();ip++){
	339	AliExternalTrackParam *tP=fPos[ip];
	340	for(UInt_t in=0;in<fNeg.size();in++){
	341	AliExternalTrackParam *tN=fNeg[in];
	342
	343	tP->PropagateToDCA(fVertex,fField,kVeryBig); //do I need this??????
	344	tN->PropagateToDCA(fVertex,fField,kVeryBig);
9929f8f5	345
629b904b	346	Double_t dcatPtN = tP->GetDCA(tN,fField,xdummy,ydummy);
9929f8f5	347	if(dcatPtN>fdca) { continue; }
9929f8f5	348
629b904b	349	ftwoTrackArray->AddAt(tP,0);
	350	ftwoTrackArray->AddAt(tN,1);
	351	AliAODVertex *vertexp1n1 = fd0calc->ReconstructSecondaryVertex(ftwoTrackArray,fField,fVertex);
9929f8f5	352	if(!vertexp1n1) {
	353	ftwoTrackArray->Clear();
	354	continue;
	355	}
	356
	357	vertexp1n1->GetXYZ(svpos);
	358
629b904b	359	tP->PropagateToDCA(vertexp1n1,fField,kVeryBig);
629b904b	360	tN->PropagateToDCA(vertexp1n1,fField,kVeryBig);
9929f8f5	361
3a626a12	362	/*
	363	Double_t px[2],py[2],pz[2];
	364	Double_t momentum[3];
	365	tP->GetPxPyPz(momentum);
	366	px[0] = momentum[0]; py[0] = momentum[1]; pz[0] = momentum[2];
	367	tN->GetPxPyPz(momentum);
	368	px[1] = momentum[0]; py[1] = momentum[1]; pz[1] = momentum[2];
	369
	370	Short_t dummycharge=0;
	371	Double_t *dummyd0 = new Double_t[2];
	372	Int_t nprongs = 2;
	373
	374	for(Int_t ipr=0;ipr<nprongs;ipr++) dummyd0[ipr]=0.;
	375	AliAODRecoDecay *rd = new AliAODRecoDecay(0x0,nprongs,dummycharge,px,py,pz,dummyd0);
	376	delete [] dummyd0; dummyd0=NULL;
	377
	378	UInt_t pdg2[2],pdg2bar[2];
	379	Double_t mPDG,minv,minvbar;
	380
	381	pdg2[0]=211; pdg2[1]=321; pdg2bar[0]=321; pdg2bar[1]=211;
	382	minv = rd->InvMass(nprongs,pdg2);
	383	minvbar = rd->InvMass(nprongs,pdg2bar);
	384	if(TMath::Abs(minv-mD0PDG)>finvMass && TMath::Abs(minv-mD0PDG)>finvMass) {continue; delete vertexp1n1; delete rd;}
	385	*/
9929f8f5	386	if((TMath::Abs(fd0calc->InvMass(tN,tP)-mD0PDG)) > finvMass && TMath::Abs((fd0calc->InvMass(tP,tN))-mD0PDG) > finvMass){continue;}
	387	fd0calc->cosThetaStar(tN,tP,D0,D0bar);
	388	if(TMath::Abs(D0) > fcosThetaStar && TMath::Abs(D0bar) > fcosThetaStar){continue;}
629b904b	389	d0[0] = tP->GetD(pvpos[0],pvpos[1],fField);
629b904b	390	d0[1] = tN->GetD(pvpos[0],pvpos[1],fField);
9929f8f5	391	if((d0[0]*d0[1]) > fd0d0){continue;}
	392	if(fd0calc->pointingAngle(tN,tP,pvpos,svpos) < fcosPoint){continue;}
	393
	394	if(fplothisto){
3a626a12	395	//fD0mass->Fill(minv);
	396	//fD0mass->Fill(minvbar);
	397	fD0mass->Fill(fd0calc->InvMass(tN,tP));
	398	fD0mass->Fill(fd0calc->InvMass(tP,tN));
	399	/*
9929f8f5	400	if((fd0calc->InvMass(tN,tP) - mD0PDG) > finvMass){
	401	fD0mass->Fill(fd0calc->InvMass(tN,tP));
	402	}
	403	else{
	404	fD0mass->Fill(fd0calc->InvMass(tP,tN));
3a626a12	405	}
3a626a12	406	*/
9929f8f5	407	}
3a626a12	408
9929f8f5	409	nD0++;
	410	delete vertexp1n1;
	411	}
	412	}
	413	return nD0;
	414	}
	415
	416	Int_t AliHLTD0Trigger::RecV0(const TObject* iter){
	417	int nD0=0;
	418	Double_t d0[2];
	419	Double_t D0,D0bar;
	420	Double_t svpos[3];
	421	Double_t pvpos[3];
	422
	423	AliESDEvent event = dynamic_cast<AliESDEvent>(const_cast<TObject*>( iter ) );
	424	event->GetStdContent();
	425	Int_t nV0 = event->GetNumberOfV0s();
	426	Double_t field = event->GetMagneticField();
	427	const AliESDVertex* pv = event->GetPrimaryVertexTracks();
	428	pv->GetXYZ(pvpos);
	429
	430	for (Int_t iv=0; iv<nV0; iv++) {
	431
	432	AliESDtrack *tN=event->GetTrack( event->GetV0(iv)->GetNindex());
	433	AliESDtrack *tP=event->GetTrack( event->GetV0(iv)->GetPindex());
	434
	435	if(tN->Pt()<fPtMin && tP->Pt()<fPtMin){continue;} //\|\|????
	436
	437	d0[0] = tP->GetD(pvpos[0],pvpos[1],field);
	438	d0[1] = tN->GetD(pvpos[0],pvpos[1],field);
	439
	440	if(d0[0]>fd0 && d0[0]>fd0){continue;} // make sure < or>
	441
	442	event->GetV0(iv)->GetXYZ(svpos[0],svpos[1],svpos[2]);
	443
	444	if(!tN->PropagateTo(svpos[0],field) && !tP->PropagateTo(svpos[0],field)){
	445	HLTInfo("Tracks could not be propagated to secondary vertex");
	446	continue;
	447	}
	448
	449	Double_t tmp1, tmp2;
	450	if(tN->GetDCA(tP,field,tmp1,tmp2) > fdca){continue;}
	451
	452	if((fd0calc->InvMass(tN,tP) - mD0PDG) > finvMass && (fd0calc->InvMass(tP,tN) - mD0PDG) > finvMass){continue;}
	453	fd0calc->cosThetaStar(tN,tP,D0,D0bar);
	454	if(D0 > fcosThetaStar && D0bar > fcosThetaStar){continue;}
	455	if((d0[0]*d0[1]) > fd0d0){continue;}
	456	if(fd0calc->pointingAngle(tN,tP,pvpos,svpos) < fcosPoint){continue;}
	457
	458	nD0++;
	459	if((fd0calc->InvMass(tN,tP) - mD0PDG) > finvMass){
	460	fD0mass->Fill(fd0calc->InvMass(tN,tP));
	461	}
	462	else{
	463	fD0mass->Fill(fd0calc->InvMass(tP,tN));
	464	}
	465	}
	466	return nD0;
	467
	468	}