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#include <cmath>
#include "HLTDiMuonGlbTrkFilter.h"
#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/HLTReco/interface/TriggerFilterObjectWithRefs.h"
#include "DataFormats/HLTReco/interface/TriggerRefsCollections.h"
#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/RecoCandidate/interface/RecoChargedCandidate.h"
#include "DataFormats/RecoCandidate/interface/RecoChargedCandidateFwd.h"
#include "DataFormats/MuonReco/interface/MuonFwd.h"
#include "DataFormats/BeamSpot/interface/BeamSpot.h"
#include "DataFormats/MuonSeed/interface/L3MuonTrajectorySeed.h"
#include "DataFormats/MuonSeed/interface/L3MuonTrajectorySeedCollection.h"
#include "DataFormats/Math/interface/deltaR.h"
#include "TrackingTools/PatternTools/interface/ClosestApproachInRPhi.h"
#include "TrackingTools/TransientTrack/interface/TransientTrack.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/ParameterSet/interface/ConfigurationDescriptions.h"
#include "FWCore/ParameterSet/interface/ParameterSetDescription.h"
#include "FWCore/Utilities/interface/InputTag.h"
#include "FWCore/Utilities/interface/EDMException.h"
#include "FWCore/Framework/interface/ESHandle.h"
HLTDiMuonGlbTrkFilter::HLTDiMuonGlbTrkFilter(const edm::ParameterSet& iConfig)
: HLTFilter(iConfig), idealMagneticFieldRecordToken_(esConsumes()) {
m_muonsTag = iConfig.getParameter<edm::InputTag>("inputMuonCollection");
m_muonsToken = consumes<reco::MuonCollection>(m_muonsTag);
m_candsTag = iConfig.getParameter<edm::InputTag>("inputCandCollection");
m_candsToken = consumes<reco::RecoChargedCandidateCollection>(m_candsTag);
m_minTrkHits = iConfig.getParameter<int>("minTrkHits");
m_minMuonHits = iConfig.getParameter<int>("minMuonHits");
m_maxNormalizedChi2 = iConfig.getParameter<double>("maxNormalizedChi2");
m_allowedTypeMask = iConfig.getParameter<unsigned int>("allowedTypeMask");
m_requiredTypeMask = iConfig.getParameter<unsigned int>("requiredTypeMask");
m_trkMuonId = muon::SelectionType(iConfig.getParameter<unsigned int>("trkMuonId"));
m_minPtMuon1 = iConfig.getParameter<double>("minPtMuon1");
m_minPtMuon2 = iConfig.getParameter<double>("minPtMuon2");
m_maxEtaMuon = iConfig.getParameter<double>("maxEtaMuon");
m_maxYDimuon = iConfig.getParameter<double>("maxYDimuon");
m_minMass = iConfig.getParameter<double>("minMass");
m_maxMass = iConfig.getParameter<double>("maxMass");
m_chargeOpt = iConfig.getParameter<int>("ChargeOpt");
m_maxDCAMuMu = iConfig.getParameter<double>("maxDCAMuMu");
m_maxdEtaMuMu = iConfig.getParameter<double>("maxdEtaMuMu");
// minimum delta-R^2 threshold with sign
auto const minDR = iConfig.getParameter<double>("minDR");
m_minDR2 = minDR * std::abs(minDR);
}
void HLTDiMuonGlbTrkFilter::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
edm::ParameterSetDescription desc;
makeHLTFilterDescription(desc);
desc.add<edm::InputTag>("inputMuonCollection", edm::InputTag(""));
desc.add<edm::InputTag>("inputCandCollection", edm::InputTag(""));
desc.add<int>("minTrkHits", -1);
desc.add<int>("minMuonHits", -1);
desc.add<double>("maxNormalizedChi2", 1e99);
desc.add<double>("minDR", 0.1);
desc.add<unsigned int>("allowedTypeMask", 255);
desc.add<unsigned int>("requiredTypeMask", 0);
desc.add<unsigned int>("trkMuonId", 0);
desc.add<double>("minPtMuon1", 17);
desc.add<double>("minPtMuon2", 8);
desc.add<double>("maxEtaMuon", 1e99);
desc.add<double>("maxYDimuon", 1e99);
desc.add<double>("minMass", 1);
desc.add<double>("maxMass", 1e99);
desc.add<int>("ChargeOpt", 0);
desc.add<double>("maxDCAMuMu", 1e99);
desc.add<double>("maxdEtaMuMu", 1e99);
descriptions.add("hltDiMuonGlbTrkFilter", desc);
}
bool HLTDiMuonGlbTrkFilter::hltFilter(edm::Event& iEvent,
const edm::EventSetup& iSetup,
trigger::TriggerFilterObjectWithRefs& filterproduct) const {
edm::Handle<reco::MuonCollection> muons;
iEvent.getByToken(m_muonsToken, muons);
edm::Handle<reco::RecoChargedCandidateCollection> cands;
iEvent.getByToken(m_candsToken, cands);
if (saveTags())
filterproduct.addCollectionTag(m_candsTag);
if (cands->size() != muons->size())
throw edm::Exception(edm::errors::Configuration)
<< "Both input collection must be aligned and represent same physical muon objects";
std::vector<unsigned int> filteredMuons;
for (unsigned int i = 0; i < muons->size(); ++i) {
const reco::Muon& muon(muons->at(i));
if ((muon.type() & m_allowedTypeMask) == 0)
continue;
if ((muon.type() & m_requiredTypeMask) != m_requiredTypeMask)
continue;
if (!muon.innerTrack().isNull()) {
if (muon.innerTrack()->numberOfValidHits() < m_minTrkHits)
continue;
}
if (!muon.globalTrack().isNull()) {
if (muon.globalTrack()->normalizedChi2() > m_maxNormalizedChi2)
continue;
if (muon.globalTrack()->hitPattern().numberOfValidMuonHits() < m_minMuonHits)
continue;
}
if (muon.isTrackerMuon() && !muon::isGoodMuon(muon, m_trkMuonId))
continue;
if (muon.pt() < std::min(m_minPtMuon1, m_minPtMuon2))
continue;
if (std::abs(muon.eta()) > m_maxEtaMuon)
continue;
filteredMuons.push_back(i);
}
unsigned int npassed(0);
std::set<unsigned int> mus;
if (filteredMuons.size() > 1) {
// Needed for DCA calculation
edm::ESHandle<MagneticField> bFieldHandle;
if (m_maxDCAMuMu < 100.)
bFieldHandle = iSetup.getHandle(idealMagneticFieldRecordToken_);
for (unsigned int i = 0; i < filteredMuons.size() - 1; ++i)
for (unsigned int j = i + 1; j < filteredMuons.size(); ++j) {
const reco::Muon& mu1(muons->at(filteredMuons.at(i)));
const reco::Muon& mu2(muons->at(filteredMuons.at(j)));
if (std::max(mu1.pt(), mu2.pt()) > std::max(m_minPtMuon1, m_minPtMuon2) &&
std::abs(mu2.eta() - mu1.eta()) < m_maxdEtaMuMu && reco::deltaR2(mu1, mu2) > m_minDR2 &&
(mu1.p4() + mu2.p4()).mass() > m_minMass && (mu1.p4() + mu2.p4()).mass() < m_maxMass &&
std::abs((mu1.p4() + mu2.p4()).Rapidity()) < m_maxYDimuon) {
if (m_chargeOpt < 0) {
if (mu1.charge() * mu2.charge() > 0)
continue;
} else if (m_chargeOpt > 0) {
if (mu1.charge() * mu2.charge() < 0)
continue;
}
if (m_maxDCAMuMu < 100.) {
reco::TrackRef tk1 = mu1.get<reco::TrackRef>();
reco::TrackRef tk2 = mu2.get<reco::TrackRef>();
reco::TransientTrack mu1TT(*tk1, &(*bFieldHandle));
reco::TransientTrack mu2TT(*tk2, &(*bFieldHandle));
TrajectoryStateClosestToPoint mu1TS = mu1TT.impactPointTSCP();
TrajectoryStateClosestToPoint mu2TS = mu2TT.impactPointTSCP();
if (mu1TS.isValid() && mu2TS.isValid()) {
ClosestApproachInRPhi cApp;
cApp.calculate(mu1TS.theState(), mu2TS.theState());
if (!cApp.status() || cApp.distance() > m_maxDCAMuMu)
continue;
}
}
mus.insert(filteredMuons.at(i));
mus.insert(filteredMuons.at(j));
npassed++;
}
}
}
for (unsigned int mu : mus)
filterproduct.addObject(trigger::TriggerMuon, reco::RecoChargedCandidateRef(cands, mu));
return npassed > 0;
}
// declare this class as a framework plugin
#include "FWCore/Framework/interface/MakerMacros.h"
DEFINE_FWK_MODULE(HLTDiMuonGlbTrkFilter);
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