inclphi.cxx

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#include "GaudiKernel/AlgFactory.h"
#include "GaudiKernel/IDataProviderSvc.h"
#include "GaudiKernel/ISvcLocator.h"
#include "GaudiKernel/MsgStream.h"
#include "GaudiKernel/PropertyMgr.h"
#include "GaudiKernel/SmartDataPtr.h"
 
#include "EventModel/Event.h"
#include "EventModel/EventModel.h"
 
#include "DstEvent/TofHitStatus.h"
#include "EventModel/EventHeader.h"
#include "EvtRecEvent/EvtRecEvent.h"
#include "EvtRecEvent/EvtRecTrack.h"
 
#include "GaudiKernel/Bootstrap.h"
#include "GaudiKernel/INTupleSvc.h"
#include "GaudiKernel/NTuple.h"
#include "TMath.h"
// #include "GaudiKernel/IHistogramSvc.h"
#include "GaudiKernel/ITHistSvc.h"
 
#include "CLHEP/Vector/LorentzVector.h"
#include "CLHEP/Vector/ThreeVector.h"
#include "CLHEP/Vector/TwoVector.h"
using CLHEP::Hep2Vector;
using CLHEP::Hep3Vector;
using CLHEP::HepLorentzVector;
#include "CLHEP/Geometry/Point3D.h"
#ifndef ENABLE_BACKWARDS_COMPATIBILITY
typedef HepGeom::Point3D<double> HepPoint3D;
#endif
 
#include "ParticleID/ParticleID.h"
#include "VertexFit/KinematicFit.h"
#include "VertexFit/VertexFit.h"
 
#include "DQAinclPhi/inclphi.h"
 
#include <vector>
 
const double ecms     = 3.097;
const double mk       = 0.493677;
const double mphi     = 1.01946;
const double xmass[5] = { 0.000511, 0.105658, 0.139570, 0.493677, 0.938272 };
const double velc     = 299.792458; // tof path unit in mm
//                          e         mu         pi      K         p
 
typedef std::vector<int>              Vint;
typedef std::vector<HepLorentzVector> Vp4;
 
/////////////////////////////////////////////////////////////////////////////
//                                                                         //
//            phi              +         X                                 //
//             |-->K+ K-                                                   //
//                                                                         //
//                                                     xugf 2009.06        //
/////////////////////////////////////////////////////////////////////////////
DECLARE_COMPONENT( inclphi )
inclphi::inclphi( const std::string& name, ISvcLocator* pSvcLocator )
    : Algorithm( name, pSvcLocator ) {
 
  m_tuple1 = 0;
  m_tuple2 = 0;
  for ( int i = 0; i < 10; i++ ) m_pass[i] = 0;
 
  // Declare the properties
  declareProperty( "Vr0cut", m_vr0cut = 5.0 );
  declareProperty( "Vz0cut", m_vz0cut = 10.0 );
  declareProperty( "CheckDedx", m_checkDedx = 1 );
  declareProperty( "CheckTof", m_checkTof = 1 );
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
StatusCode inclphi::initialize() {
  MsgStream log( msgSvc(), name() );
 
  log << MSG::INFO << "in initialize()" << endmsg;
 
  StatusCode status;
 
  if ( service( "THistSvc", m_thsvc ).isFailure() )
  {
    log << MSG::ERROR << "Couldn't get THistSvc" << endmsg;
    return StatusCode::FAILURE;
  }
  // "DQAHist" is fixed
  TH1F* inclphi_mass = new TH1F( "InclPhi_mass", "INCLUSIVE_PHI_MASS", 80, 1.01, 1.05 );
  inclphi_mass->GetXaxis()->SetTitle( "M_{KK} (GeV)" );
  inclphi_mass->GetYaxis()->SetTitle( "Nentries/0.5MeV/c^{2}" );
  if ( m_thsvc->regHist( "/DQAHist/InclPhi/InclPhi_mass", inclphi_mass ).isFailure() )
  { log << MSG::ERROR << "Couldn't register inclphi_mass" << endmsg; }
 
  //*****************************************
 
  NTuplePtr nt1( ntupleSvc(), "DQAFILE/InclPhi" );
  if ( nt1 ) m_tuple1 = nt1;
  else
  {
    m_tuple1 = ntupleSvc()->book( "DQAFILE/InclPhi1", CLID_ColumnWiseTuple, "inclphi Ntuple" );
    if ( m_tuple1 )
    {
      status = m_tuple1->addItem( "mphiall", m_mphiall );
      status = m_tuple1->addItem( "mpphiall", m_pphiall );
    }
    else
    {
      log << MSG::ERROR << "    Cannot book N-tuple:" << long( m_tuple1 ) << endmsg;
      return StatusCode::FAILURE;
    }
  }
  NTuplePtr nt2( ntupleSvc(), "DQAFILE/InclPhi2" );
  if ( nt2 ) m_tuple2 = nt2;
  else
  {
    m_tuple2 = ntupleSvc()->book( "DQAFILE/InclPhi2", CLID_ColumnWiseTuple, "inclphi Ntuple" );
    if ( m_tuple2 )
    {
      status = m_tuple2->addItem( "nkp", m_nkp );
      status = m_tuple2->addItem( "nkm", m_nkm );
      status = m_tuple2->addItem( "ncharge", m_ncharge );
      status = m_tuple2->addItem( "difchi0", m_difchi );
      status = m_tuple2->addItem( "mmphi", m_mphi );
      status = m_tuple2->addItem( "pphi", m_pphi );
      status = m_tuple2->addItem( "pk1", m_pk1 );
    }
    else
    {
      log << MSG::ERROR << "    Cannot book N-tuple:" << long( m_tuple2 ) << endmsg;
      return StatusCode::FAILURE;
    }
  }
  //
  //--------end of book--------
  //
 
  log << MSG::INFO << "successfully return from initialize()" << endmsg;
  return StatusCode::SUCCESS;
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
StatusCode inclphi::execute() {
  StatusCode sc = StatusCode::SUCCESS;
 
  MsgStream log( msgSvc(), name() );
  log << MSG::INFO << "in execute()" << endmsg;
 
  // DQA
  // Add the line below at the beginning of execute()
  //
  setFilterPassed( false );
 
  m_pass[0] += 1;
 
  SmartDataPtr<Event::EventHeader> eventHeader( eventSvc(), "/Event/EventHeader" );
  int                              run   = eventHeader->runNumber();
  int                              event = eventHeader->eventNumber();
 
  SmartDataPtr<EvtRecEvent>    evtRecEvent( eventSvc(), EventModel::EvtRec::EvtRecEvent );
  SmartDataPtr<EvtRecTrackCol> evtRecTrkCol( eventSvc(), EventModel::EvtRec::EvtRecTrackCol );
 
  m_pass[1] += 1;
 
  Vint ikp, ikm, iGood;
  iGood.clear();
  ikp.clear();
  ikm.clear();
 
  Vp4 pkp, pkm;
  pkp.clear();
  pkm.clear();
 
  int TotCharge = 0;
  for ( int i = 0; i < evtRecEvent->totalCharged(); i++ )
  {
    EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + i;
    if ( !( *itTrk )->isMdcTrackValid() ) continue;
    RecMdcTrack* mdcTrk = ( *itTrk )->mdcTrack();
    if ( fabs( mdcTrk->z() ) >= m_vz0cut ) continue;
    if ( mdcTrk->r() >= m_vr0cut ) continue;
    iGood.push_back( i );
    TotCharge += mdcTrk->charge();
  }
  //
  // Finish Good Charged Track Selection
  //
  int nGood = iGood.size();
 
  //
  // Charge track number cut
  //
 
  if ( ( nGood < 2 ) || ( TotCharge != 0 ) ) return sc;
 
  m_pass[2] += 1;
 
  //
  // Assign 4-momentum to each charged track
  //
  ParticleID* pid = ParticleID::instance();
  for ( int i = 0; i < nGood; i++ )
  {
    EvtRecTrackIterator itTrk = evtRecTrkCol->begin() + iGood[i];
    //    if(pid) delete pid;
    pid->init();
    pid->setMethod( pid->methodProbability() );
    pid->setChiMinCut( 4 );
    pid->setRecTrack( *itTrk );
    pid->usePidSys( pid->useDedx() | pid->useTof1() | pid->useTof2() ); // use PID sub-system
    pid->identify( pid->onlyPion() | pid->onlyKaon() );                 // seperater Pion/Kaon
    pid->calculate();
    if ( !( pid->IsPidInfoValid() ) ) continue;
    if ( !( *itTrk )->isMdcKalTrackValid() ) continue;
    RecMdcKalTrack* mdcKalTrk = ( *itTrk )->mdcKalTrack();
    //    RecMdcTrack* mdcTrk = (*itTrk)->mdcTrack();
 
    if ( pid->probKaon() < 0.001 || ( pid->probKaon() < pid->probPion() ) ) continue;
    //    if(pid->probPion() < 0.001) continue;
    mdcKalTrk->setPidType( RecMdcKalTrack::kaon );
    HepLorentzVector ptrk;
    ptrk.setPx( mdcKalTrk->px() );
    ptrk.setPy( mdcKalTrk->py() );
    ptrk.setPz( mdcKalTrk->pz() );
    double p3 = ptrk.mag();
    ptrk.setE( sqrt( p3 * p3 + mk * mk ) );
    if ( mdcKalTrk->charge() > 0 )
    {
      ikp.push_back( iGood[i] );
      pkp.push_back( ptrk );
    }
    else
    {
      ikm.push_back( iGood[i] );
      pkm.push_back( ptrk );
    }
  }
 
  m_pass[4] += 1;
  int nkp = ikp.size();
  int nkm = ikm.size();
 
  m_nkp     = nkp;
  m_nkm     = nkm;
  m_ncharge = nGood;
 
  if ( nkp < 1 || nkm < 1 ) return sc;
 
  m_pass[5] += 1;
 
  //
  //**************** Phi Finding ************
  //
  //
 
  HepLorentzVector pphi, pTot;
  Vint             iphi;
  iphi.clear();
 
  double difchi0 = 99999.0;
  int    ixk1    = -1;
  int    ixk2    = -1;
 
  for ( int i = 0; i < nkm; i++ )
  {
    for ( int j = 0; j < nkp; j++ )
    {
 
      pphi      = pkm[i] + pkp[j];
      m_mphiall = pphi.m();
      m_pphiall = pphi.rho();
      m_tuple1->write();
 
      double difchi = fabs( pphi.m() - mphi );
      if ( difchi < difchi0 )
      {
        difchi0 = difchi;
        ixk1    = i;
        ixk2    = j;
      } // good phi
    }   // K+
  }     // K-
 
  m_difchi = difchi0;
 
  if ( ixk1 == -1 ) return sc;
 
  m_pass[6] += 1;
 
  pTot = pkm[ixk1] + pkp[ixk2];
 
  m_pk1  = pkm[ixk1].m();
  m_mphi = pTot.m();
  m_pphi = pTot.rho();
 
  TH1* h( 0 );
  if ( m_thsvc->getHist( "/DQAHist/InclPhi/InclPhi_mass", h ).isSuccess() )
  { h->Fill( pTot.m() ); }
  else { log << MSG::ERROR << "Couldn't retrieve inclphi_mass" << endmsg; }
  m_tuple2->write();
  ////////////////////////////////////
  // DQA
  //  set tag and quality
  //  Pid: 1 - electron, 2 - muon, 3 - pion, 4 - kaon, 5 - proton
  //  (*(evtRecTrkCol->begin()+ikm[ixk1]))->setPartId(4);
  //  (*(evtRecTrkCol->begin()+ikp[ixk2]))->setPartId(4);
  ( *( evtRecTrkCol->begin() + ikm[ixk1] ) )->tagKaon();
  ( *( evtRecTrkCol->begin() + ikp[ixk2] ) )->tagKaon();
  // Quality: defined by whether dE/dx or TOF is used to identify particle
  // 0 - no dE/dx, no TOF (can be used for dE/dx and TOF calibration)
  // 1 - only dE/dx (can be used for TOF calibration)
  // 2 - only TOF (can be used for dE/dx calibration)
  // 3 - Both dE/dx and TOF
  ( *( evtRecTrkCol->begin() + ikm[ixk1] ) )->setQuality( 3 );
  ( *( evtRecTrkCol->begin() + ikp[ixk2] ) )->setQuality( 3 );
  //--------------------------------------------------
  // Add the line below at the end of execute(), (before return)
  //
  setFilterPassed( true );
 
  return StatusCode::SUCCESS;
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
StatusCode inclphi::finalize() {
 
  MsgStream log( msgSvc(), name() );
  log << MSG::INFO << "in finalize()" << endmsg;
  log << MSG::INFO << "Total Entries : " << m_pass[0] << endmsg;
  log << MSG::INFO << "dstCol, trkCol: " << m_pass[1] << endmsg;
  log << MSG::INFO << "Ncharge Cut : " << m_pass[2] << endmsg;
  log << MSG::INFO << "TOF dEdx : " << m_pass[3] << endmsg;
  log << MSG::INFO << "PID : " << m_pass[4] << endmsg;
  log << MSG::INFO << "NK Cut : " << m_pass[5] << endmsg;
  log << MSG::INFO << "Nphi select : " << m_pass[6] << endmsg;
  return StatusCode::SUCCESS;
}