pat::GenJetMatcher Class Reference

#include <SmearedJetProducerT.h>

Public Member Functions
	GenJetMatcher (const edm::ParameterSet &cfg, edm::ConsumesCollector &&collector)
void	getTokens (const edm::Event &event)
template<class T >
const reco::GenJet *	match (const T &jet, double resolution)

Static Public Member Functions
static void	fillDescriptions (edm::ParameterSetDescription &desc)

Private Attributes
double	m_dPt_max_factor
double	m_dR_max
edm::Handle< reco::GenJetCollection >	m_genJets
edm::EDGetTokenT< reco::GenJetCollection >	m_genJetsToken

Detailed Description

Definition at line 40 of file SmearedJetProducerT.h.

Constructor & Destructor Documentation

pat::GenJetMatcher::GenJetMatcher ( const edm::ParameterSet &  cfg, edm::ConsumesCollector &&  collector  )

inline

Definition at line 42 of file SmearedJetProducerT.h.

        : m_genJetsToken(collector.consumes<reco::GenJetCollection>(cfg.getParameter<edm::InputTag>("genJets"))),
          m_dR_max(cfg.getParameter<double>("dRMax")),
          m_dPt_max_factor(cfg.getParameter<double>("dPtMaxFactor")) {
      // Empty
    }

Member Function Documentation

static void pat::GenJetMatcher::fillDescriptions ( edm::ParameterSetDescription &  desc )

inlinestatic

Definition at line 49 of file SmearedJetProducerT.h.

References edm::ParameterSetDescription::add().

Referenced by SmearedJetProducerT< T >::fillDescriptions().

                                                                   {
      desc.add<edm::InputTag>("genJets");
      desc.add<double>("dRMax");
      desc.add<double>("dPtMaxFactor");
    }

void pat::GenJetMatcher::getTokens ( const edm::Event &  event )

inline

Definition at line 55 of file SmearedJetProducerT.h.

References m_genJets, and m_genJetsToken.

{ event.getByToken(m_genJetsToken, m_genJets); }

template<class T >

const reco::GenJet* pat::GenJetMatcher::match ( const T &  jet, double  resolution  )

inline

Definition at line 58 of file SmearedJetProducerT.h.

References funct::abs(), boostedElectronIsolation_cff::deltaR, ttbarCategorization_cff::genJets, infinity, m_dPt_max_factor, m_dR_max, and m_genJets.

                                                             {
      const reco::GenJetCollection& genJets = *m_genJets;

      // Try to find a gen jet matching
      // dR < m_dR_max
      // dPt < m_dPt_max_factor * resolution

      double min_dR = std::numeric_limits<double>::infinity();
      const reco::GenJet* matched_genJet = nullptr;

      for (const auto& genJet : genJets) {
        double dR = deltaR(genJet, jet);

        if (dR > min_dR)
          continue;

        if (dR < m_dR_max) {
          double dPt = std::abs(genJet.pt() - jet.pt());
          if (dPt > m_dPt_max_factor * resolution)
            continue;

          min_dR = dR;
          matched_genJet = &genJet;
        }
      }

      return matched_genJet;
    }

Member Data Documentation

double pat::GenJetMatcher::m_dPt_max_factor

private

Definition at line 92 of file SmearedJetProducerT.h.

Referenced by match().

double pat::GenJetMatcher::m_dR_max

private

Definition at line 91 of file SmearedJetProducerT.h.

Referenced by match().

edm::Handle<reco::GenJetCollection> pat::GenJetMatcher::m_genJets

private

Definition at line 89 of file SmearedJetProducerT.h.

Referenced by getTokens(), and match().

edm::EDGetTokenT<reco::GenJetCollection> pat::GenJetMatcher::m_genJetsToken

private

Definition at line 88 of file SmearedJetProducerT.h.

Referenced by getTokens().