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Public Member Functions | Protected Attributes

TopGenEvent Class Reference

Base class to hold information for reduced top generator information. More...

#include <AnalysisDataFormats/TopObjects/interface/TopGenEvent.h>

Inheritance diagram for TopGenEvent:
StGenEvent TtGenEvent

List of all members.

Public Member Functions

const reco::GenParticleb () const
 return b quark if available; 0 else
const reco::GenParticlebBar () const
 return anti-b quark if available; 0 else
const reco::GenParticlecandidate (int id, unsigned int parentId=0) const
 get candidate with given pdg id if available; 0 else
const reco::GenParticledaughterQuarkBarOfWMinus () const
 return anti-quark daughter of anti-W boson
const reco::GenParticledaughterQuarkBarOfWPlus () const
 return anti-quark daughter of W boson
const reco::GenParticledaughterQuarkOfTop (bool invertCharge=false) const
 return daughter quark of top quark (which can have flavor b, s or d)
const reco::GenParticledaughterQuarkOfTopBar () const
 return daughter quark of anti-top quark (which can have flavor b, s or d)
const reco::GenParticledaughterQuarkOfWMinus () const
 return quark daughter of anti-W boson
const reco::GenParticledaughterQuarkOfWPlus (bool invertQuarkCharge=false, bool invertBosonCharge=false) const
 return quark daughter quark of W boson
const reco::GenParticleeMinus () const
 return electron if available; 0 else
const reco::GenParticleePlus () const
 return positron if available; 0 else
const reco::GenParticleCollectioninitialPartons () const
 return particles of initial partons
std::vector< const
reco::GenParticle * > 
lightQuarks (bool includingBQuarks=false) const
 return all light quarks or all quarks including b's
const reco::GenParticlemuMinus () const
 return muon if available; 0 else
const reco::GenParticlemuPlus () const
 return anti-muon if available; 0 else
int numberOfBQuarks (bool fromTopQuark=true) const
 return number of b quarks in the decay chain
int numberOfLeptons (WDecay::LeptonType type, bool fromWBoson=true) const
 return number of leptons in the decay chain
int numberOfLeptons (bool fromWBoson=true) const
 return number of leptons in the decay chain
const reco::GenParticleCollectionparticles () const
 return particles of decay chain
void print () const
std::vector< const
reco::GenParticle * > 
radiatedGluons (int pdgId) const
 return radiated gluons from particle with pdgId
const reco::GenParticletauMinus () const
 return tau if available; 0 else
const reco::GenParticletauPlus () const
 return anti-tau if available; 0 else
const reco::GenParticletop () const
 return top if available; 0 else
const reco::GenParticletopBar () const
 return anti-top if available; 0 else
 TopGenEvent (reco::GenParticleRefProd &decaySubset, reco::GenParticleRefProd &iniSubset)
 default constructor
 TopGenEvent ()
 empty constructor
std::vector< const
reco::GenParticle * > 
topSisters () const
 return number of top anti-top sisters
const reco::GenParticlewMinus () const
 return W minus if available; 0 else
const reco::GenParticlewPlus () const
 return W plus if available; 0 else
virtual ~TopGenEvent ()
 default destructor

Protected Attributes

reco::GenParticleRefProd initPartons_
 reference to the list of initial partons (has to be kept in the event!)
reco::GenParticleRefProd parts_
 reference to the top decay chain (has to be kept in the event!)

Detailed Description

Base class to hold information for reduced top generator information.

The structure holds reference information to the generator particles of the decay chains for each top quark and of the initial partons. It provides access and administration.

Definition at line 41 of file TopGenEvent.h.


Constructor & Destructor Documentation

TopGenEvent::TopGenEvent ( ) [inline]

empty constructor

Definition at line 46 of file TopGenEvent.h.

{};
TopGenEvent::TopGenEvent ( reco::GenParticleRefProd decaySubset,
reco::GenParticleRefProd iniSubset 
)

default constructor

default contructor

Definition at line 9 of file TopGenEvent.cc.

References TopDecaySubset_cfi::decaySubset, initPartons_, TopInitSubset_cfi::initSubset, and parts_.

virtual TopGenEvent::~TopGenEvent ( ) [inline, virtual]

default destructor

Definition at line 50 of file TopGenEvent.h.

{};

Member Function Documentation

const reco::GenParticle* TopGenEvent::b ( ) const [inline]

return b quark if available; 0 else

Definition at line 100 of file TopGenEvent.h.

References TopDecayID::bID, candidate(), and TopDecayID::tID.

Referenced by TtFullHadEvtPartons::vec(), and TtFullLepEvtPartons::vec().

const reco::GenParticle* TopGenEvent::bBar ( ) const [inline]

return anti-b quark if available; 0 else

Definition at line 102 of file TopGenEvent.h.

References TopDecayID::bID, candidate(), and TopDecayID::tID.

Referenced by TtFullHadEvtPartons::vec(), and TtFullLepEvtPartons::vec().

const reco::GenParticle * TopGenEvent::candidate ( int  id,
unsigned int  parentId = 0 
) const

get candidate with given pdg id if available; 0 else

Definition at line 16 of file TopGenEvent.cc.

References abs, i, ExpressReco_HICollisions_FallBack::id, parts_, and benchmark_cfg::pdgId.

Referenced by b(), bBar(), eMinus(), ePlus(), muMinus(), muPlus(), tauMinus(), tauPlus(), top(), topBar(), wMinus(), and wPlus().

{
  const reco::GenParticle* cand=0;
  const reco::GenParticleCollection & partsColl = *parts_;
  for( unsigned int i = 0; i < partsColl.size(); ++i ) {
    if( partsColl[i].pdgId()==id ){
      if(parentId==0?true:partsColl[i].mother()&&std::abs(partsColl[i].mother()->pdgId())==(int)parentId){
        cand = &partsColl[i];
      }
    }
  }  
  return cand;
}
const reco::GenParticle* TopGenEvent::daughterQuarkBarOfWMinus ( ) const [inline]

return anti-quark daughter of anti-W boson

Definition at line 79 of file TopGenEvent.h.

References daughterQuarkOfWPlus().

Referenced by TtFullHadEvtPartons::vec().

{ return daughterQuarkOfWPlus(true, true); };
const reco::GenParticle* TopGenEvent::daughterQuarkBarOfWPlus ( ) const [inline]

return anti-quark daughter of W boson

Definition at line 77 of file TopGenEvent.h.

References daughterQuarkOfWPlus().

Referenced by TtFullHadEvtPartons::vec().

{ return daughterQuarkOfWPlus(true, false); };
const reco::GenParticle * TopGenEvent::daughterQuarkOfTop ( bool  invertCharge = false) const

return daughter quark of top quark (which can have flavor b, s or d)

Definition at line 150 of file TopGenEvent.cc.

References abs, reco::CompositeRefCandidateT< D >::begin(), TopDecayID::bID, reco::CompositeRefCandidateT< D >::end(), Exception, edm::errors::InvalidReference, parts_, reco::LeafCandidate::pdgId(), TopDecayID::tID, and top().

Referenced by daughterQuarkOfTopBar().

{
  const reco::GenParticle* cand=0;
  for(reco::GenParticleCollection::const_iterator top = parts_->begin(); top<parts_->end(); ++top){
    if( top->pdgId()==(invertCharge?-TopDecayID::tID:TopDecayID::tID) ){
      for(reco::GenParticle::const_iterator quark = top->begin(); quark<top->end(); ++quark){
        if( std::abs(quark->pdgId())<= TopDecayID::bID ){
          cand = dynamic_cast<const reco::GenParticle* > (&(*quark));
          if(cand == 0){
            throw edm::Exception( edm::errors::InvalidReference, "Not a GenParticle" );
          }
          break;
        }
      }
    }
  }
  return cand;
}
const reco::GenParticle* TopGenEvent::daughterQuarkOfTopBar ( ) const [inline]

return daughter quark of anti-top quark (which can have flavor b, s or d)

Definition at line 71 of file TopGenEvent.h.

References daughterQuarkOfTop().

{ return daughterQuarkOfTop(true); };
const reco::GenParticle* TopGenEvent::daughterQuarkOfWMinus ( ) const [inline]

return quark daughter of anti-W boson

Definition at line 75 of file TopGenEvent.h.

References daughterQuarkOfWPlus().

Referenced by TtFullHadEvtPartons::vec().

{ return daughterQuarkOfWPlus(false, true); };
const reco::GenParticle * TopGenEvent::daughterQuarkOfWPlus ( bool  invertQuarkCharge = false,
bool  invertBosonCharge = false 
) const

return quark daughter quark of W boson

Definition at line 170 of file TopGenEvent.cc.

References abs, TopDecayID::bID, reco::flavour(), i, parts_, benchmark_cfg::pdgId, and TopDecayID::WID.

Referenced by daughterQuarkBarOfWMinus(), daughterQuarkBarOfWPlus(), daughterQuarkOfWMinus(), and TtFullHadEvtPartons::vec().

{
  const reco::GenParticle* cand=0;
  const reco::GenParticleCollection & partsColl = *parts_;
  for (unsigned int i = 0; i < partsColl.size(); ++i) {
    if(partsColl[i].mother() && partsColl[i].mother()->pdgId()==(invertBosonCharge?-TopDecayID::WID:TopDecayID::WID) &&
       std::abs(partsColl[i].pdgId())<=TopDecayID::bID && (invertQuarkCharge?reco::flavour(partsColl[i])<0:reco::flavour(partsColl[i])>0)){
      cand = &partsColl[i];
    }
  }
  return cand;
}
const reco::GenParticle* TopGenEvent::eMinus ( ) const [inline]

return electron if available; 0 else

Definition at line 84 of file TopGenEvent.h.

References candidate(), TopDecayID::elecID, and TopDecayID::WID.

const reco::GenParticle* TopGenEvent::ePlus ( ) const [inline]

return positron if available; 0 else

Definition at line 86 of file TopGenEvent.h.

References candidate(), TopDecayID::elecID, and TopDecayID::WID.

const reco::GenParticleCollection& TopGenEvent::initialPartons ( ) const [inline]

return particles of initial partons

Definition at line 55 of file TopGenEvent.h.

References initPartons_.

{ return *initPartons_;}
std::vector< const reco::GenParticle * > TopGenEvent::lightQuarks ( bool  includingBQuarks = false) const

return all light quarks or all quarks including b's

Definition at line 184 of file TopGenEvent.cc.

References abs, TopDecayID::bID, Exception, edm::errors::InvalidReference, and parts_.

{
  std::vector<const reco::GenParticle*> lightQuarks;
  for (reco::GenParticleCollection::const_iterator part = parts_->begin(); part < parts_->end(); ++part) {
    if( (includingBQuarks && std::abs(part->pdgId())==TopDecayID::bID) || std::abs(part->pdgId())<TopDecayID::bID ) {
      if( dynamic_cast<const reco::GenParticle*>( &(*part) ) == 0){
        throw edm::Exception( edm::errors::InvalidReference, "Not a GenParticle" );
      }
      lightQuarks.push_back( part->clone() );
    }
  }  
  return lightQuarks;
}
const reco::GenParticle* TopGenEvent::muMinus ( ) const [inline]

return muon if available; 0 else

Definition at line 88 of file TopGenEvent.h.

References candidate(), TopDecayID::muonID, and TopDecayID::WID.

const reco::GenParticle* TopGenEvent::muPlus ( ) const [inline]

return anti-muon if available; 0 else

Definition at line 90 of file TopGenEvent.h.

References candidate(), TopDecayID::muonID, and TopDecayID::WID.

int TopGenEvent::numberOfBQuarks ( bool  fromTopQuark = true) const

return number of b quarks in the decay chain

Definition at line 112 of file TopGenEvent.cc.

References abs, TopDecayID::bID, i, parts_, benchmark_cfg::pdgId, and TopDecayID::tID.

{
  int bq=0;
  const reco::GenParticleCollection & partsColl = *parts_;
  for (unsigned int i = 0; i < partsColl.size(); ++i) {
   //depend if radiation qqbar are included or not
    if(std::abs(partsColl[i].pdgId())==TopDecayID::bID){
      if(fromTopQuark){
        if(partsColl[i].mother() &&  std::abs(partsColl[i].mother()->pdgId())==TopDecayID::tID){
          ++bq;
        }
      }
      else{
        ++bq;
      }
    }
  }  
  return bq;
}
int TopGenEvent::numberOfLeptons ( bool  fromWBoson = true) const

return number of leptons in the decay chain

Definition at line 48 of file TopGenEvent.cc.

References abs, i, reco::isLepton(), parts_, benchmark_cfg::pdgId, and TopDecayID::WID.

Referenced by TtGenEvent::isNumberOfLeptons().

{
  int lep=0;
  const reco::GenParticleCollection& partsColl = *parts_;
  for(unsigned int i = 0; i < partsColl.size(); ++i) {
    if(reco::isLepton(partsColl[i])) {
      if(fromWBoson){
        if(partsColl[i].mother() &&  std::abs(partsColl[i].mother()->pdgId())==TopDecayID::WID){
          ++lep;
        }
      }
      else{
        ++lep;
      }
    }
  }  
  return lep;
}
int TopGenEvent::numberOfLeptons ( WDecay::LeptonType  type,
bool  fromWBoson = true 
) const

return number of leptons in the decay chain

Definition at line 68 of file TopGenEvent.cc.

References abs, TopDecayID::elecID, i, reco::isLepton(), WDecay::kElec, WDecay::kMuon, WDecay::kNone, WDecay::kTau, TopDecayID::muonID, parts_, benchmark_cfg::pdgId, TopDecayID::tauID, and TopDecayID::WID.

{
  int leptonType=-1;
  switch(typeRestriction){
    // resolve whether or not there is
    // any restriction in lepton types
  case WDecay::kElec: 
    leptonType=TopDecayID::elecID;
    break;
  case WDecay::kMuon: 
    leptonType=TopDecayID::muonID;
    break;
  case WDecay::kTau: 
    leptonType=TopDecayID::tauID;
    break;
  case WDecay::kNone:
    break;
  }
  int lep=0;
  const reco::GenParticleCollection & partsColl = *parts_;
  for(unsigned int i = 0; i < partsColl.size(); ++i) {
    if(fromWBoson){
      // restrict to particles originating from the W boson
      if( !(partsColl[i].mother() &&  std::abs(partsColl[i].mother()->pdgId())==TopDecayID::WID) ){
        continue;
      }
    }
    if(leptonType>0){
      // in case of lepton type restriction
      if( std::abs(partsColl[i].pdgId())==leptonType ){
        ++lep;
      }
    }
    else{
      // take any lepton type into account else
      if( reco::isLepton(partsColl[i]) ){
        ++lep;
      }
    }
  }  
  return lep;
}
const reco::GenParticleCollection& TopGenEvent::particles ( ) const [inline]

return particles of decay chain

Definition at line 53 of file TopGenEvent.h.

References parts_.

{ return *parts_; }
void TopGenEvent::print ( void  ) const

print content of the top decay chain as formated LogInfo to the MessageLogger output for debugging

Definition at line 31 of file TopGenEvent.cc.

References funct::log(), and parts_.

{
  edm::LogVerbatim log("TopGenEvent");
  log << "\n"
      << "--------------------------------------\n"
      << "- Dump TopGenEvent Content           -\n"
      << "--------------------------------------\n";
  for (reco::GenParticleCollection::const_iterator part = parts_->begin(); 
       part<parts_->end(); ++part) {
    log << "pdgId:"  << std::setw(5)  << part->pdgId()     << ", "
        << "mass:"   << std::setw(11) << part->p4().mass() << ", "
        << "energy:" << std::setw(11) << part->energy()    << ", " 
        << "pt:"     << std::setw(11) << part->pt()        << "\n"; 
  }
}
std::vector< const reco::GenParticle * > TopGenEvent::radiatedGluons ( int  pdgId) const

return radiated gluons from particle with pdgId

Definition at line 199 of file TopGenEvent.cc.

References Exception, TopDecayID::glueID, edm::errors::InvalidReference, parts_, and benchmark_cfg::pdgId.

Referenced by TtGenEvent::hadronicDecayTopRadiation(), and TtGenEvent::leptonicDecayTopRadiation().

                                          {
  std::vector<const reco::GenParticle*> rads;
  for (reco::GenParticleCollection::const_iterator part = parts_->begin(); part < parts_->end(); ++part) {
    if ( part->mother() && part->mother()->pdgId()==pdgId ){
      if(part->pdgId()==TopDecayID::glueID){
        if( dynamic_cast<const reco::GenParticle*>( &(*part) ) == 0){
          throw edm::Exception( edm::errors::InvalidReference, "Not a GenParticle" );
        }
      }
      rads.push_back( part->clone() );
    }
  }  
  return rads;
}
const reco::GenParticle* TopGenEvent::tauMinus ( ) const [inline]

return tau if available; 0 else

Definition at line 92 of file TopGenEvent.h.

References candidate(), TopDecayID::tauID, and TopDecayID::WID.

const reco::GenParticle* TopGenEvent::tauPlus ( ) const [inline]

return anti-tau if available; 0 else

Definition at line 94 of file TopGenEvent.h.

References candidate(), TopDecayID::tauID, and TopDecayID::WID.

const reco::GenParticle* TopGenEvent::top ( ) const [inline]

return top if available; 0 else

Definition at line 104 of file TopGenEvent.h.

References candidate(), and TopDecayID::tID.

Referenced by daughterQuarkOfTop(), and TtGenEvent::isTtBar().

{ return candidate( TopDecayID::tID    );}
const reco::GenParticle* TopGenEvent::topBar ( ) const [inline]

return anti-top if available; 0 else

Definition at line 106 of file TopGenEvent.h.

References candidate(), and TopDecayID::tID.

Referenced by TtGenEvent::isTtBar().

{ return candidate(-TopDecayID::tID    );}
std::vector< const reco::GenParticle * > TopGenEvent::topSisters ( ) const

return number of top anti-top sisters

Definition at line 133 of file TopGenEvent.cc.

References abs, Exception, edm::errors::InvalidReference, parts_, and TopDecayID::tID.

{
  std::vector<const reco::GenParticle*> sisters;
  for(reco::GenParticleCollection::const_iterator part = parts_->begin(); part<parts_->end(); ++part){
    if( part->numberOfMothers()==0 && std::abs(part->pdgId())!= TopDecayID::tID){
      // choose top sister which do not have a 
      // mother and are whether top nor anti-top 
      if( dynamic_cast<const reco::GenParticle*>( &(*part) ) == 0){
        throw edm::Exception( edm::errors::InvalidReference, "Not a GenParticle" );
      }
      sisters.push_back( part->clone() );
    }
  }  
  return sisters;
}
const reco::GenParticle* TopGenEvent::wMinus ( ) const [inline]

return W minus if available; 0 else

Definition at line 96 of file TopGenEvent.h.

References candidate(), TopDecayID::tID, and TopDecayID::WID.

const reco::GenParticle* TopGenEvent::wPlus ( ) const [inline]

return W plus if available; 0 else

Definition at line 98 of file TopGenEvent.h.

References candidate(), TopDecayID::tID, and TopDecayID::WID.


Member Data Documentation

reference to the list of initial partons (has to be kept in the event!)

Definition at line 117 of file TopGenEvent.h.

Referenced by initialPartons(), StGenEvent::StGenEvent(), TopGenEvent(), and TtGenEvent::TtGenEvent().