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 60 of file SmearedJetProducerT.h.

References funct::abs(), deltaR(), PFRecoTauDiscriminationAgainstElectronDeadECAL_cfi::dR, patPFMETCorrections_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 94 of file SmearedJetProducerT.h.

Referenced by match().

double pat::GenJetMatcher::m_dR_max

private

Definition at line 93 of file SmearedJetProducerT.h.

Referenced by match().

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

private

Definition at line 91 of file SmearedJetProducerT.h.

Referenced by getTokens(), and match().

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

private

Definition at line 90 of file SmearedJetProducerT.h.

Referenced by getTokens().