JetSubStructureUtils::KtDeltaR Class Reference

#include <KtDeltaR.h>

Inheritance diagram for JetSubStructureUtils::KtDeltaR:

Collaboration diagram for JetSubStructureUtils::KtDeltaR:

Public Member Functions
	KtDeltaR (double jetrad)
virtual double	result (const fastjet::PseudoJet &jet) const
virtual TOut	result (const xAOD::Jet &jet) const

Private Attributes
double	m_jetrad

Detailed Description

Definition at line 11 of file KtDeltaR.h.

Constructor & Destructor Documentation

KtDeltaR()

JetSubStructureUtils::KtDeltaR::KtDeltaR ( double jetrad )

inline

Definition at line 13 of file KtDeltaR.h.

: m_jetrad(jetrad) {};

Member Function Documentation

result() [1/2]

double KtDeltaR::result ( const fastjet::PseudoJet & jet ) const

virtual

Definition at line 14 of file KtDeltaR.cxx.

{
  vector<fastjet::PseudoJet> constit_pseudojets = jet.constituents();
  if ( constit_pseudojets.size() < 2 ) {
    //Jet has fewer than 2 constituents.
    return 0.0;
  }
 
  fastjet::JetDefinition jetdef = fastjet::JetDefinition(fastjet::kt_algorithm, m_jetrad);
  fastjet::ClusterSequence cs(constit_pseudojets, jetdef);
  std::vector<fastjet::PseudoJet> outjets = cs.exclusive_jets(2);
  if ( outjets.size() < 2 ) {
    //"Fewer than two subjets found.
    return 0.0;
  }
 
  return xAOD::P4Helpers::deltaR(outjets[0].eta(), outjets[0].phi(),
                 outjets[1].eta(), outjets[1].phi());
}

result() [2/2]

virtual TOut JetSubStructureUtils::SubstructureCalculator< TOut >::result ( const xAOD::Jet & jet ) const

inlinevirtual

Reimplemented from JetSubStructureUtils::SubstructureCalculator< double >.

Definition at line 25 of file SubstructureCalculator.h.

                                                    {
        // PS 4/18 master developent
        // std::vector<fastjet::PseudoJet> constit_pseudojets =
        //   jet::JetConstituentFiller::constituentPseudoJets(jet);
 
        std::vector<fastjet::PseudoJet> constit_pseudojets;
        std::transform(jet.getConstituents().begin(),
                       jet.getConstituents().end(),
                       std::back_inserter(constit_pseudojets),
                       [](const auto& c){
                         const xAOD::IParticle* ip = c->rawConstituent();
                         return
                           // fastjet::PseudoJet((c->rawConstituent())->p4());
                           fastjet::PseudoJet(ip->p4());
                       });
 
        fastjet::PseudoJet pjet = fastjet::join(constit_pseudojets);
 
        return result(pjet);
      }

Member Data Documentation

m_jetrad

double JetSubStructureUtils::KtDeltaR::m_jetrad

private

Definition at line 19 of file KtDeltaR.h.

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The documentation for this class was generated from the following files:

• KtDeltaR.h
• KtDeltaR.cxx