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#include <GhostTrackComputer.h>
Public Member Functions | |
| GhostTrackComputer (const edm::ParameterSet ¶ms) | |
| reco::TaggingVariableList | operator() (const reco::TrackIPTagInfo &ipInfo, const reco::SecondaryVertexTagInfo &svInfo) const |
Private Member Functions | |
| const reco::TrackIPTagInfo::TrackIPData & | threshTrack (const reco::TrackIPTagInfo &trackIPTagInfo, const reco::TrackIPTagInfo::SortCriteria sort, const reco::Jet &jet, const GlobalPoint &pv) const |
Private Attributes | |
| double | charmCut |
| double | minTrackWeight |
| reco::TrackIPTagInfo::SortCriteria | sortCriterium |
| reco::TrackSelector | trackNoDeltaRSelector |
| reco::V0Filter | trackPairV0Filter |
| reco::TrackSelector | trackSelector |
| bool | vertexMassCorrection |
Definition at line 14 of file GhostTrackComputer.h.
| GhostTrackComputer::GhostTrackComputer | ( | const edm::ParameterSet & | params | ) |
Definition at line 42 of file GhostTrackComputer.cc.
:
charmCut(params.getParameter<double>("charmCut")),
sortCriterium(TrackSorting::getCriterium(params.getParameter<std::string>("trackSort"))),
trackSelector(params.getParameter<edm::ParameterSet>("trackSelection")),
trackNoDeltaRSelector(dropDeltaR(params.getParameter<edm::ParameterSet>("trackSelection"))),
minTrackWeight(params.getParameter<double>("minimumTrackWeight")),
trackPairV0Filter(params.getParameter<edm::ParameterSet>("trackPairV0Filter"))
{
}
| TaggingVariableList GhostTrackComputer::operator() | ( | const reco::TrackIPTagInfo & | ipInfo, |
| const reco::SecondaryVertexTagInfo & | svInfo | ||
| ) | const |
Definition at line 108 of file GhostTrackComputer.cc.
References addMeas(), edm::RefVector< C, T, F >::begin(), reco::TrackIPTagInfo::TrackIPData::closestToGhostTrack, data, Geom::deltaR(), reco::TrackIPTagInfo::TrackIPData::distanceToGhostTrack, reco::TrackIPTagInfo::TrackIPData::distanceToJetAxis, edm::RefVector< C, T, F >::end(), etaRel(), reco::SecondaryVertexTagInfo::flightDirection(), reco::SecondaryVertexTagInfo::flightDistance(), reco::btau::flightDistance2dSig, reco::btau::flightDistance2dVal, reco::btau::flightDistance3dSig, reco::btau::flightDistance3dVal, reco::TrackIPTagInfo::TrackIPData::ghostTrackWeight, reco::Vertex::hasRefittedTracks(), reco::TrackBase::hitPattern(), i, reco::TrackIPTagInfo::impactParameterData(), errorMatrix2Lands::indices, reco::TaggingVariableList::insert(), reco::TrackIPTagInfo::TrackIPData::ip2d, reco::TrackIPTagInfo::TrackIPData::ip3d, edm::Ref< C, T, F >::isNonnull(), j, reco::JTATagInfo::jet(), metsig::jet, reco::btau::jetEta, reco::btau::jetNSecondaryVertices, reco::btau::jetNSingleTrackVertices, reco::btau::jetPt, minTrackWeight, reco::TrackBase::momentum(), n, reco::TrackBase::normalizedChi2(), reco::btag::Vertices::NoVertex, reco::SecondaryVertexTagInfo::nVertices(), convertSQLiteXML::ok, reco::HitPattern::pixelLayersWithMeasurement(), reco::TrackIPTagInfo::primaryVertex(), reco::btag::Vertices::PseudoVertex, reco::btag::Vertices::RecoVertex, reco::Vertex::refittedTrack(), reco::SecondaryVertexTagInfo::secondaryVertex(), reco::TrackIPTagInfo::selectedTracks(), Measurement1D::significance(), sortCriterium, reco::TrackIPTagInfo::sortedIndexes(), mathSSE::sqrt(), threshTrack(), reco::btau::trackChi2, reco::btau::trackDecayLenVal, reco::btau::trackDeltaR, reco::HitPattern::trackerLayersWithMeasurement(), reco::btau::trackEta, reco::btau::trackEtaRel, reco::btau::trackGhostTrackDistSig, reco::btau::trackGhostTrackDistVal, reco::btau::trackGhostTrackWeight, reco::btau::trackJetDistVal, reco::btau::trackMomentum, reco::btau::trackNPixelHits, reco::btau::trackNTotalHits, trackPairV0Filter, reco::btau::trackPtRel, testEve_cfg::tracks, trackSelector, reco::btau::trackSip2dSig, reco::btau::trackSip2dSigAboveCharm, reco::btau::trackSip2dVal, reco::btau::trackSip3dSig, reco::btau::trackSip3dSigAboveCharm, reco::btau::trackSip3dVal, reco::btau::trackSumJetDeltaR, reco::btau::trackSumJetEtRatio, reco::SecondaryVertexTagInfo::trackWeight(), Measurement1D::value(), reco::btau::vertexCategory, reco::btau::vertexEnergyRatio, reco::btau::vertexJetDeltaR, reco::btau::vertexMass, reco::btau::vertexNTracks, reco::SecondaryVertexTagInfo::vertexTracks(), and w().
{
using namespace ROOT::Math;
edm::RefToBase<Jet> jet = ipInfo.jet();
math::XYZVector jetDir = jet->momentum().Unit();
bool havePv = ipInfo.primaryVertex().isNonnull();
GlobalPoint pv;
if (havePv)
pv = GlobalPoint(ipInfo.primaryVertex()->x(),
ipInfo.primaryVertex()->y(),
ipInfo.primaryVertex()->z());
btag::Vertices::VertexType vtxType = btag::Vertices::NoVertex;
TaggingVariableList vars;
vars.insert(btau::jetPt, jet->pt(), true);
vars.insert(btau::jetEta, jet->eta(), true);
TrackKinematics allKinematics;
TrackKinematics vertexKinematics;
TrackKinematics trackKinematics;
std::pair<double, double> vertexDist2D, vertexDist3D;
std::pair<double, double> tracksDist2D, tracksDist3D;
unsigned int nVertices = 0;
unsigned int nVertexTracks = 0;
unsigned int nTracks = 0;
for(unsigned int i = 0; i < svInfo.nVertices(); i++) {
const Vertex &vertex = svInfo.secondaryVertex(i);
bool hasRefittedTracks = vertex.hasRefittedTracks();
TrackRefVector tracks = svInfo.vertexTracks(i);
unsigned int n = 0;
for(TrackRefVector::const_iterator track = tracks.begin();
track != tracks.end(); track++)
if (svInfo.trackWeight(i, *track) >= minTrackWeight)
n++;
if (n < 1)
continue;
bool isTrackVertex = (n == 1);
++*(isTrackVertex ? &nTracks : &nVertices);
addMeas(*(isTrackVertex ? &tracksDist2D : &vertexDist2D),
svInfo.flightDistance(i, true));
addMeas(*(isTrackVertex ? &tracksDist3D : &vertexDist3D),
svInfo.flightDistance(i, false));
TrackKinematics &kin = isTrackVertex ? trackKinematics
: vertexKinematics;
for(TrackRefVector::const_iterator track = tracks.begin();
track != tracks.end(); track++) {
float w = svInfo.trackWeight(i, *track);
if (w < minTrackWeight)
continue;
if (hasRefittedTracks) {
Track actualTrack =
vertex.refittedTrack(*track);
kin.add(actualTrack, w);
vars.insert(btau::trackEtaRel, etaRel(jetDir,
actualTrack.momentum()), true);
} else {
kin.add(**track, w);
vars.insert(btau::trackEtaRel, etaRel(jetDir,
(*track)->momentum()), true);
}
if (!isTrackVertex)
nVertexTracks++;
}
}
Measurement1D dist2D, dist3D;
if (nVertices) {
vtxType = btag::Vertices::RecoVertex;
if (nVertices == 1 && nTracks) {
vertexDist2D.first += tracksDist2D.first;
vertexDist2D.second += tracksDist2D.second;
vertexDist3D.first += tracksDist3D.first;
vertexDist3D.second += tracksDist3D.second;
vertexKinematics += trackKinematics;
}
dist2D = Measurement1D(
vertexDist2D.first / vertexDist2D.second,
std::sqrt(1. / vertexDist2D.second));
dist3D = Measurement1D(
vertexDist3D.first / vertexDist3D.second,
std::sqrt(1. / vertexDist3D.second));
vars.insert(btau::jetNSecondaryVertices, nVertices, true);
vars.insert(btau::vertexNTracks, nVertexTracks, true);
} else if (nTracks) {
vtxType = btag::Vertices::PseudoVertex;
vertexKinematics = trackKinematics;
dist2D = Measurement1D(
tracksDist2D.first / tracksDist2D.second,
std::sqrt(1. / tracksDist2D.second));
dist3D = Measurement1D(
tracksDist3D.first / tracksDist3D.second,
std::sqrt(1. / tracksDist3D.second));
}
if (nVertices || nTracks) {
vars.insert(btau::flightDistance2dVal, dist2D.value(), true);
vars.insert(btau::flightDistance2dSig, dist2D.significance(), true);
vars.insert(btau::flightDistance3dVal, dist3D.value(), true);
vars.insert(btau::flightDistance3dSig, dist3D.significance(), true);
vars.insert(btau::vertexJetDeltaR,
Geom::deltaR(svInfo.flightDirection(0), jetDir),true);
vars.insert(btau::jetNSingleTrackVertices, nTracks, true);
}
std::vector<std::size_t> indices = ipInfo.sortedIndexes(sortCriterium);
const std::vector<TrackIPTagInfo::TrackIPData> &ipData =
ipInfo.impactParameterData();
const edm::RefVector<TrackCollection> &tracks =
ipInfo.selectedTracks();
TrackRef trackPairV0Test[2];
for(unsigned int i = 0; i < indices.size(); i++) {
std::size_t idx = indices[i];
const TrackIPTagInfo::TrackIPData &data = ipData[idx];
const TrackRef &trackRef = tracks[idx];
const Track &track = *trackRef;
// filter track
if (!trackSelector(track, data, *jet, pv))
continue;
// add track to kinematics for all tracks in jet
allKinematics.add(track);
// check against all other tracks for V0 track pairs
trackPairV0Test[0] = tracks[idx];
bool ok = true;
for(unsigned int j = 0; j < indices.size(); j++) {
if (i == j)
continue;
std::size_t pairIdx = indices[j];
const TrackIPTagInfo::TrackIPData &pairTrackData =
ipData[pairIdx];
const TrackRef &pairTrackRef = tracks[pairIdx];
const Track &pairTrack = *pairTrackRef;
if (!trackSelector(pairTrack, pairTrackData, *jet, pv))
continue;
trackPairV0Test[1] = pairTrackRef;
if (!trackPairV0Filter(trackPairV0Test, 2)) {
ok = false;
break;
}
}
if (!ok)
continue;
// add track variables
math::XYZVector trackMom = track.momentum();
double trackMag = std::sqrt(trackMom.Mag2());
vars.insert(btau::trackSip3dVal, data.ip3d.value(), true);
vars.insert(btau::trackSip3dSig, data.ip3d.significance(), true);
vars.insert(btau::trackSip2dVal, data.ip2d.value(), true);
vars.insert(btau::trackSip2dSig, data.ip2d.significance(), true);
vars.insert(btau::trackJetDistVal, data.distanceToJetAxis.value(), true);
vars.insert(btau::trackGhostTrackDistVal, data.distanceToGhostTrack.value(), true);
vars.insert(btau::trackGhostTrackDistSig, data.distanceToGhostTrack.significance(), true);
vars.insert(btau::trackGhostTrackWeight, data.ghostTrackWeight, true);
vars.insert(btau::trackDecayLenVal, havePv ? (data.closestToGhostTrack - pv).mag() : -1.0, true);
vars.insert(btau::trackMomentum, trackMag, true);
vars.insert(btau::trackEta, trackMom.Eta(), true);
vars.insert(btau::trackChi2, track.normalizedChi2(), true);
vars.insert(btau::trackNPixelHits, track.hitPattern().pixelLayersWithMeasurement(), true);
vars.insert(btau::trackNTotalHits, track.hitPattern().trackerLayersWithMeasurement(), true);
vars.insert(btau::trackPtRel, VectorUtil::Perp(trackMom, jetDir), true);
vars.insert(btau::trackDeltaR, VectorUtil::DeltaR(trackMom, jetDir), true);
}
vars.insert(btau::vertexCategory, vtxType, true);
vars.insert(btau::trackSumJetDeltaR,
VectorUtil::DeltaR(allKinematics.vectorSum(), jetDir), true);
vars.insert(btau::trackSumJetEtRatio,
allKinematics.vectorSum().Et() / ipInfo.jet()->et(), true);
vars.insert(btau::trackSip3dSigAboveCharm,
threshTrack(ipInfo, TrackIPTagInfo::IP3DSig, *jet, pv)
.ip3d.significance(),
true);
vars.insert(btau::trackSip2dSigAboveCharm,
threshTrack(ipInfo, TrackIPTagInfo::IP2DSig, *jet, pv)
.ip2d.significance(),
true);
if (vtxType != btag::Vertices::NoVertex) {
math::XYZTLorentzVector allSum = allKinematics.vectorSum();
math::XYZTLorentzVector vertexSum = vertexKinematics.vectorSum();
vars.insert(btau::vertexMass, vertexSum.M(), true);
if (allKinematics.numberOfTracks())
vars.insert(btau::vertexEnergyRatio,
vertexSum.E() / allSum.E(), true);
else
vars.insert(btau::vertexEnergyRatio, 1, true);
}
vars.finalize();
return vars;
}
| const TrackIPTagInfo::TrackIPData & GhostTrackComputer::threshTrack | ( | const reco::TrackIPTagInfo & | trackIPTagInfo, |
| const reco::TrackIPTagInfo::SortCriteria | sort, | ||
| const reco::Jet & | jet, | ||
| const GlobalPoint & | pv | ||
| ) | const [private] |
Definition at line 53 of file GhostTrackComputer.cc.
References reco::TrackKinematics::add(), charmCut, data, reco::TrackIPTagInfo::impactParameterData(), errorMatrix2Lands::indices, reco::TrackIPTagInfo::selectedTracks(), reco::TrackIPTagInfo::sortedIndexes(), trackNoDeltaRSelector, testEve_cfg::tracks, and reco::TrackKinematics::vectorSum().
Referenced by operator()().
{
const edm::RefVector<TrackCollection> &tracks =
trackIPTagInfo.selectedTracks();
const std::vector<TrackIPTagInfo::TrackIPData> &ipData =
trackIPTagInfo.impactParameterData();
std::vector<std::size_t> indices = trackIPTagInfo.sortedIndexes(sort);
TrackKinematics kin;
for(std::vector<std::size_t>::const_iterator iter = indices.begin();
iter != indices.end(); ++iter) {
const TrackIPTagInfo::TrackIPData &data = ipData[*iter];
const Track &track = *tracks[*iter];
if (!trackNoDeltaRSelector(track, data, jet, pv))
continue;
kin.add(track);
if (kin.vectorSum().M() > charmCut)
return data;
}
static const TrackIPTagInfo::TrackIPData dummy = {
GlobalPoint(),
GlobalPoint(),
Measurement1D(-1.0, 1.0),
Measurement1D(-1.0, 1.0),
Measurement1D(-1.0, 1.0),
Measurement1D(-1.0, 1.0),
0.
};
return dummy;
}
double GhostTrackComputer::charmCut [private] |
Definition at line 29 of file GhostTrackComputer.h.
Referenced by threshTrack().
double GhostTrackComputer::minTrackWeight [private] |
Definition at line 33 of file GhostTrackComputer.h.
Referenced by operator()().
Definition at line 30 of file GhostTrackComputer.h.
Referenced by operator()().
Definition at line 32 of file GhostTrackComputer.h.
Referenced by threshTrack().
Definition at line 35 of file GhostTrackComputer.h.
Referenced by operator()().
Definition at line 31 of file GhostTrackComputer.h.
Referenced by operator()().
bool GhostTrackComputer::vertexMassCorrection [private] |
Definition at line 34 of file GhostTrackComputer.h.
1.7.3