TtFullLepEvtPartons Class Reference

Class to fill partons in a well defined order for fully-leptonic ttbar events. More...

#include "AnalysisDataFormats/TopObjects/interface/TtFullLepEvtPartons.h"

Inheritance diagram for TtFullLepEvtPartons:

Public Types
enum	{ B, BBar, Lepton, LeptonBar }

Public Member Functions
	TtFullLepEvtPartons (const std::vector< std::string > &partonsToIgnore=std::vector< std::string >())
	default constructor More...
std::vector< const reco::Candidate * >	vec (const TtGenEvent &genEvt)
	return vector of partons in the order defined in the corresponding enum More...
	~TtFullLepEvtPartons ()
	default destructor More...
Public Member Functions inherited from TtEventPartons
void	expand (std::vector< int > &vec)
	insert dummy index -3 for all partons that were chosen to be ignored More...
	TtEventPartons ()
	default constructor More...
virtual	~TtEventPartons ()
	default destructor More...

Additional Inherited Members
Protected Member Functions inherited from TtEventPartons
reco::Candidate *	dummyCandidatePtr () const
	return pointer to an empty reco::Candidate More...
void	prune (std::vector< const reco::Candidate * > &vec)
	erase partons from vector if they where chosen to be ignored More...
Protected Attributes inherited from TtEventPartons
std::vector< bool >	ignorePartons_
	flag partons that were chosen not to be used More...

Detailed Description

Class to fill partons in a well defined order for fully-leptonic ttbar events.

This class is mainly used for the jet-parton matching in TopTools.

Definition at line 19 of file TtFullLepEvtPartons.h.

Member Enumeration Documentation

anonymous enum

fully-leptonic parton enum used to define the order in the vector for lepton and jet combinatorics

Enumerator
B
BBar
Lepton
LeptonBar

Definition at line 25 of file TtFullLepEvtPartons.h.

{ B, BBar, Lepton, LeptonBar };

Constructor & Destructor Documentation

TtFullLepEvtPartons::TtFullLepEvtPartons

(

const std::vector< std::string > &

partonsToIgnore = std::vector<std::string>()

)

default constructor

Definition at line 6 of file TtFullLepEvtPartons.cc.

References BBar, Exception, i, and TtEventPartons::ignorePartons_.

{
  // default: use all partons
  for(unsigned int i = 0; i < 2; i++)
    ignorePartons_.push_back(false);
  // read vector of strings and flag partons to be ignored
  for(std::vector<std::string>::const_iterator str = partonsToIgnore.begin(); str != partonsToIgnore.end(); ++str) {
    if     ((*str) == "B"   ) ignorePartons_[B   ] = true;
    else if((*str) == "BBar") ignorePartons_[BBar] = true;
    else throw cms::Exception("Configuration")
      << "The following string in partonsToIgnore is not supported: " << (*str) << "\n";
  }
}

TtFullLepEvtPartons::~TtFullLepEvtPartons ( )

inline

default destructor

Definition at line 32 of file TtFullLepEvtPartons.h.

{};

Member Function Documentation

std::vector< const reco::Candidate * > TtFullLepEvtPartons::vec ( const TtGenEvent &  genEvt )

virtual

return vector of partons in the order defined in the corresponding enum

Implements TtEventPartons.

Definition at line 21 of file TtFullLepEvtPartons.cc.

References B, TopGenEvent::b(), BBar, TopGenEvent::bBar(), TtEventPartons::dummyCandidatePtr(), i, TtGenEvent::isFullLeptonic(), and TtEventPartons::prune().

{
  std::vector<const reco::Candidate*> vec;

  if(genEvt.isFullLeptonic()) {
    // fill vector with partons from genEvent
    // (use enum for positions of the partons in the vector)
    vec.resize(2);
    vec[B   ] = genEvt.b()    ? genEvt.b()    : dummyCandidatePtr();
    vec[BBar] = genEvt.bBar() ? genEvt.bBar() : dummyCandidatePtr();
  }
  else {
    // fill vector with dummy objects if the event is not fully-leptonic ttbar
    for(unsigned i=0; i<2; i++)
      vec.push_back( dummyCandidatePtr() );
  }

  // erase partons from vector if they where chosen to be ignored
  prune(vec);

  return vec;
}