PropagateToMuon Class Reference

Propagate an object (usually a track) to the second muon station. Support for other muon stations will be added on request. More...

#include "MuonAnalysis/MuonAssociators/interface/PropagateToMuon.h"

Public Member Functions
TrajectoryStateOnSurface	extrapolate (const reco::Track &tk) const
	Extrapolate reco::Track to the muon station 2, return an invalid TSOS if it fails. More...
TrajectoryStateOnSurface	extrapolate (const reco::Candidate &tk) const
	Extrapolate reco::Candidate to the muon station 2, return an invalid TSOS if it fails. More...
TrajectoryStateOnSurface	extrapolate (const SimTrack &tk, const edm::SimVertexContainer &vtxs) const
TrajectoryStateOnSurface	extrapolate (const FreeTrajectoryState &state) const
	Extrapolate a FreeTrajectoryState to the muon station 2, return an invalid TSOS if it fails. More...
void	init (const edm::EventSetup &iSetup)
	Call this method at the beginning of each event, to initialize geometry, magnetic field and propagators. More...
	PropagateToMuon (const edm::ParameterSet &iConfig, edm::ConsumesCollector)
	~PropagateToMuon ()

Private Types
enum	WhichState { AtVertex, Innermost, Outermost }
enum	WhichTrack { None, TrackerTk, MuonTk, GlobalTk }

Private Member Functions
TrajectoryStateOnSurface	getBestDet (const TrajectoryStateOnSurface &tsos, const DetLayer *station) const
	Get the best TSOS on one of the chambres of this DetLayer, or an invalid TSOS if none match. More...
FreeTrajectoryState	startingState (const reco::Candidate &reco) const
	Starting state for the propagation. More...
FreeTrajectoryState	startingState (const reco::Track &tk) const
	Starting state for the propagation. More...
FreeTrajectoryState	startingState (const SimTrack &tk, const edm::SimVertexContainer &vtxs) const
	Starting state for the propagation. More...

Private Attributes
const BoundCylinder *	barrelCylinder_
double	barrelHalfLength_
bool	cosmicPropagation_
	for cosmics, some things change: the along-opposite is not in-out, nor the innermost/outermost states are in-out really More...
const BoundDisk *	endcapDiskNeg_ [3]
const BoundDisk *	endcapDiskPos_ [3]
std::pair< float, float >	endcapRadii_ [3]
bool	fallbackToME1_
	Fallback to ME1 if propagation to ME2 fails. More...
edm::ESHandle< MagneticField >	magfield_
edm::ESGetToken< MagneticField, IdealMagneticFieldRecord >	magfieldToken_
edm::ESHandle < MuonDetLayerGeometry >	muonGeometry_
edm::ESGetToken < MuonDetLayerGeometry, MuonRecoGeometryRecord >	muonGeometryToken_
edm::ESHandle< Propagator >	propagator_
edm::ESHandle< Propagator >	propagatorAny_
edm::ESGetToken< Propagator, TrackingComponentsRecord >	propagatorAnyToken_
edm::ESHandle< Propagator >	propagatorOpposite_
edm::ESGetToken< Propagator, TrackingComponentsRecord >	propagatorOppositeToken_
edm::ESGetToken< Propagator, TrackingComponentsRecord >	propagatorToken_
bool	useMB2_
	Propagate to MB2 (default) instead of MB1. More...
bool	useMB2InOverlap_
bool	useSimpleGeometry_
	Use simplified geometry (cylinders and disks, not individual chambers) More...
WhichState	whichState_
WhichTrack	whichTrack_
	Labels for input collections. More...

Detailed Description

Propagate an object (usually a track) to the second muon station. Support for other muon stations will be added on request.

"HLTriggerOffline/Muon/interface/PropagateToMuon.h"

Author

Giovanni Petrucciani

Giovanni Petrucciani

Version

Id:

PropagateToMuon.h,v 1.3 2010/07/01 07:41:09 gpetrucc Exp

Definition at line 35 of file PropagateToMuon.h.

Member Enumeration Documentation

enum PropagateToMuon::WhichState

private

Enumerator
AtVertex
Innermost
Outermost

Definition at line 61 of file PropagateToMuon.h.

{ AtVertex, Innermost, Outermost };

enum PropagateToMuon::WhichTrack

private

Enumerator
None
TrackerTk
MuonTk
GlobalTk

Definition at line 60 of file PropagateToMuon.h.

{ None, TrackerTk, MuonTk, GlobalTk };

Constructor & Destructor Documentation

PropagateToMuon::PropagateToMuon ( const edm::ParameterSet &  iConfig, edm::ConsumesCollector  iC  )

explicit

Definition at line 17 of file PropagateToMuon.cc.

References AtVertex, cosmicPropagation_, Exception, edm::ParameterSet::getParameter(), GlobalTk, Innermost, MuonTk, None, Outermost, AlCaHLTBitMon_QueryRunRegistry::string, TrackerTk, whichState_, and whichTrack_.

    : useSimpleGeometry_(iConfig.getParameter<bool>("useSimpleGeometry")),
      useMB2_(iConfig.existsAs<bool>("useStation2") ? iConfig.getParameter<bool>("useStation2") : true),
      fallbackToME1_(iConfig.existsAs<bool>("fallbackToME1") ? iConfig.getParameter<bool>("fallbackToME1") : false),
      whichTrack_(None),
      whichState_(AtVertex),
      cosmicPropagation_(iConfig.existsAs<bool>("cosmicPropagationHypothesis")
                             ? iConfig.getParameter<bool>("cosmicPropagationHypothesis")
                             : false),
      useMB2InOverlap_(iConfig.existsAs<bool>("useMB2InOverlap") ? iConfig.getParameter<bool>("useMB2InOverlap")
                                                                 : false),
      magfieldToken_(iC.esConsumes<>()),
      propagatorToken_(iC.esConsumes<>(edm::ESInputTag("", "SteppingHelixPropagatorAlong"))),
      propagatorAnyToken_(iC.esConsumes<>(edm::ESInputTag("", "SteppingHelixPropagatorAny"))),
      propagatorOppositeToken_(iC.esConsumes<>(edm::ESInputTag("", "SteppingHelixPropagatorOpposite"))),
      muonGeometryToken_(iC.esConsumes<>()) {
  std::string whichTrack = iConfig.getParameter<std::string>("useTrack");
  if (whichTrack == "none") {
    whichTrack_ = None;
  } else if (whichTrack == "tracker") {
    whichTrack_ = TrackerTk;
  } else if (whichTrack == "muon") {
    whichTrack_ = MuonTk;
  } else if (whichTrack == "global") {
    whichTrack_ = GlobalTk;
  } else
    throw cms::Exception("Configuration") << "Parameter 'useTrack' must be 'none', 'tracker', 'muon', 'global'\n";
  if (whichTrack_ != None) {
    std::string whichState = iConfig.getParameter<std::string>("useState");
    if (whichState == "atVertex") {
      whichState_ = AtVertex;
    } else if (whichState == "innermost") {
      whichState_ = Innermost;
    } else if (whichState == "outermost") {
      whichState_ = Outermost;
    } else
      throw cms::Exception("Configuration") << "Parameter 'useState' must be 'atVertex', 'innermost', 'outermost'\n";
  }
  if (cosmicPropagation_ && (whichTrack_ == None || whichState_ == AtVertex)) {
    throw cms::Exception("Configuration") << "When using 'cosmicPropagationHypothesis' useTrack must not be 'none', "
                                             "and the state must not be 'atVertex'\n";
  }
}

PropagateToMuon::~PropagateToMuon

(

)

Definition at line 61 of file PropagateToMuon.cc.

{}

Member Function Documentation

TrajectoryStateOnSurface PropagateToMuon::extrapolate ( const reco::Track &  tk ) const

inline

Extrapolate reco::Track to the muon station 2, return an invalid TSOS if it fails.

Definition at line 44 of file PropagateToMuon.h.

References extrapolate(), and startingState().

Referenced by L1MuonMatcherAlgo::extrapolate(), extrapolate(), MuonGmtPair::MuonGmtPair(), and TriggerMatcherToHLTDebug::produce().

{ return extrapolate(startingState(tk)); }

TrajectoryStateOnSurface PropagateToMuon::extrapolate ( const reco::Candidate &  tk ) const

inline

Extrapolate reco::Candidate to the muon station 2, return an invalid TSOS if it fails.

Definition at line 47 of file PropagateToMuon.h.

References extrapolate(), and startingState().

Referenced by extrapolate().

{ return extrapolate(startingState(tk)); }

TrajectoryStateOnSurface PropagateToMuon::extrapolate ( const SimTrack &  tk, const edm::SimVertexContainer &  vtxs  ) const

inline

Extrapolate a SimTrack to the muon station 2, return an invalid TSOS if it fails; needs the SimVertices too, to know where to start from Note: it will throw an exception if the SimTrack has no vertex.

Definition at line 52 of file PropagateToMuon.h.

References extrapolate(), and startingState().

                                                                                                    {
    return extrapolate(startingState(tk, vtxs));
  }

TrajectoryStateOnSurface PropagateToMuon::extrapolate

(

const FreeTrajectoryState &

state

)

const

Extrapolate a FreeTrajectoryState to the muon station 2, return an invalid TSOS if it fails.

Definition at line 161 of file PropagateToMuon.cc.

References AtVertex, barrelCylinder_, barrelHalfLength_, cosmicPropagation_, Vector3DBase< T, FrameTag >::dot(), endcapDiskNeg_, endcapDiskPos_, endcapRadii_, PVValHelper::eta, PV3DBase< T, PVType, FrameType >::eta(), Exception, fallbackToME1_, first, getBestDet(), TrajectoryStateOnSurface::globalPosition(), edm::ESHandleBase::isValid(), sistrip::SpyUtilities::isValid(), TrajectoryStateOnSurface::isValid(), PV3DBase< T, PVType, FrameType >::mag(), magfield_, FreeTrajectoryState::momentum(), muonGeometry_, PV3DBase< T, PVType, FrameType >::perp(), FreeTrajectoryState::position(), position, Propagator::propagate(), propagator_, propagatorOpposite_, rho, edm::second(), useMB2_, useSimpleGeometry_, whichState_, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                                                            {
  if (!magfield_.isValid() || barrelCylinder_ == nullptr) {
    throw cms::Exception("NotInitialized")
        << "PropagateToMuon: You must call init(const edm::EventSetup &iSetup) before using this object.\n";
  }

  TrajectoryStateOnSurface final;
  if (start.momentum().mag() == 0)
    return final;
  double eta = start.momentum().eta();

  const Propagator *propagatorBarrel = &*propagator_;
  const Propagator *propagatorEndcaps = &*propagator_;
  if (whichState_ != AtVertex) {
    if (start.position().perp() > barrelCylinder_->radius())
      propagatorBarrel = &*propagatorOpposite_;
    if (fabs(start.position().z()) > endcapDiskPos_[useMB2_ ? 2 : 1]->position().z())
      propagatorEndcaps = &*propagatorOpposite_;
  }
  if (cosmicPropagation_) {
    if (start.momentum().dot(GlobalVector(start.position().x(), start.position().y(), start.position().z())) < 0) {
      // must flip the propagations
      propagatorBarrel = (propagatorBarrel == &*propagator_ ? &*propagatorOpposite_ : &*propagator_);
      propagatorEndcaps = (propagatorEndcaps == &*propagator_ ? &*propagatorOpposite_ : &*propagator_);
    }
  }

  TrajectoryStateOnSurface tsos = propagatorBarrel->propagate(start, *barrelCylinder_);
  if (tsos.isValid()) {
    if (useSimpleGeometry_) {
      //std::cout << "  propagated to barrel, z = " << tsos.globalPosition().z() << ", bound = " << barrelHalfLength_ << std::endl;
      if (fabs(tsos.globalPosition().z()) <= barrelHalfLength_)
        final = tsos;
    } else {
      final = getBestDet(tsos, muonGeometry_->allDTLayers()[1]);
    }
  }
  if (!final.isValid()) {
    for (int ie = (useMB2_ ? 2 : 1); ie >= 0; --ie) {
      tsos = propagatorEndcaps->propagate(start, (eta > 0 ? *endcapDiskPos_[ie] : *endcapDiskNeg_[ie]));
      if (tsos.isValid()) {
        if (useSimpleGeometry_) {
          float rho = tsos.globalPosition().perp();
          //std::cout << "  propagated to endcap " << ie << ", rho = " << rho << ", bounds [ " << endcapRadii_[ie].first << ", " << endcapRadii_[ie].second << "]" << std::endl;
          if ((rho >= endcapRadii_[ie].first) && (rho <= endcapRadii_[ie].second))
            final = tsos;
        } else {
          final = getBestDet(
              tsos, (eta > 0 ? muonGeometry_->forwardCSCLayers()[ie] : muonGeometry_->backwardCSCLayers()[ie]));
        }
      }  //else //std::cout << "  failed to propagated to endcap " << ie  << std::endl;
      if (final.isValid())
        break;
      if (ie == 2 && !fallbackToME1_)
        break;
    }
  }
  return final;
}

TrajectoryStateOnSurface PropagateToMuon::getBestDet ( const TrajectoryStateOnSurface &  tsos, const DetLayer *  station  ) const

private

Get the best TSOS on one of the chambres of this DetLayer, or an invalid TSOS if none match.

Definition at line 221 of file PropagateToMuon.cc.

References GeometricSearchDet::compatibleDets(), propagatorAny_, and runTheMatrix::ret.

Referenced by extrapolate().

                                                                                  {
  TrajectoryStateOnSurface ret;                  // start as null
  Chi2MeasurementEstimator estimator(1e10, 3.);  // require compatibility at 3 sigma
  std::vector<GeometricSearchDet::DetWithState> dets = layer->compatibleDets(tsos, *propagatorAny_, estimator);
  if (!dets.empty()) {
    ret = dets.front().second;
  }
  return ret;
}

void PropagateToMuon::init

(

const edm::EventSetup &

iSetup

)

Call this method at the beginning of each event, to initialize geometry, magnetic field and propagators.

Definition at line 63 of file PropagateToMuon.cc.

References barrelCylinder_, barrelHalfLength_, endcapDiskNeg_, endcapDiskPos_, endcapRadii_, edm::EventSetup::getHandle(), mps_fire::i, magfield_, magfieldToken_, muonGeometry_, muonGeometryToken_, propagator_, propagatorAny_, propagatorAnyToken_, propagatorOpposite_, propagatorOppositeToken_, propagatorToken_, GeometricSearchDet::surface(), useMB2_, and useMB2InOverlap_.

Referenced by L1TMuonDQMOffline::analyze(), L1MuonMatcherAlgo::init(), and TriggerMatcherToHLTDebug::produce().

                                                      {
  magfield_ = iSetup.getHandle(magfieldToken_);
  propagator_ = iSetup.getHandle(propagatorToken_);
  propagatorOpposite_ = iSetup.getHandle(propagatorOppositeToken_);
  propagatorAny_ = iSetup.getHandle(propagatorAnyToken_);
  muonGeometry_ = iSetup.getHandle(muonGeometryToken_);

  // Get the barrel cylinder
  const DetLayer *dtLay = muonGeometry_->allDTLayers()[useMB2_ ? 1 : 0];
  barrelCylinder_ = dynamic_cast<const BoundCylinder *>(&dtLay->surface());
  barrelHalfLength_ = barrelCylinder_->bounds().length() / 2;
  ;
  //std::cout << "L1MuonMatcher: barrel radius = " << barrelCylinder_->radius() << ", half length = " << barrelHalfLength_ << std::endl;

  // Get the endcap disks. Note that ME1 has two disks (ME1/1 and ME2/1-ME3/2-ME4/1), so there's one more index
  for (size_t i = 0; i <= (useMB2_ ? 2 : 1); ++i) {
    endcapDiskPos_[i] = dynamic_cast<const BoundDisk *>(&muonGeometry_->forwardCSCLayers()[i]->surface());
    endcapDiskNeg_[i] = dynamic_cast<const BoundDisk *>(&muonGeometry_->backwardCSCLayers()[i]->surface());
    endcapRadii_[i] = std::make_pair(endcapDiskPos_[i]->innerRadius(), endcapDiskPos_[i]->outerRadius());
    //std::cout << "L1MuonMatcher: endcap " << i << " Z = " << endcapDiskPos_[i]->position().z() << ", radii = " << endcapRadii_[i].first << "," << endcapRadii_[i].second << std::endl;
  }

  if (useMB2_ && useMB2InOverlap_)
    barrelHalfLength_ = endcapDiskPos_[2]->position().z();
}

FreeTrajectoryState PropagateToMuon::startingState ( const reco::Candidate &  reco ) const

private

Starting state for the propagation.

Definition at line 89 of file PropagateToMuon.cc.

References reco::Candidate::charge(), reco::RecoCandidate::combinedMuon(), Exception, GlobalTk, edm::Ref< C, T, F >::isNull(), magfield_, MuonTk, None, edm::ESHandle< class >::product(), reco::Candidate::px(), reco::Candidate::py(), reco::Candidate::pz(), dt_dqm_sourceclient_common_cff::reco, runTheMatrix::ret, reco::RecoCandidate::standAloneMuon(), reco::RecoCandidate::track(), TrackerTk, reco::Candidate::vx(), reco::Candidate::vy(), reco::Candidate::vz(), and whichTrack_.

Referenced by extrapolate().

                                                                                  {
  FreeTrajectoryState ret;
  if (whichTrack_ != None) {
    const reco::RecoCandidate *rc = dynamic_cast<const reco::RecoCandidate *>(&reco);
    if (rc == nullptr)
      throw cms::Exception("Invalid Data") << "Input object is not a RecoCandidate.\n";
    reco::TrackRef tk;
    switch (whichTrack_) {
      case TrackerTk:
        tk = rc->track();
        break;
      case MuonTk:
        tk = rc->standAloneMuon();
        break;
      case GlobalTk:
        tk = rc->combinedMuon();
        break;
      default:
        break;  // just to make gcc happy
    }
    if (tk.isNull()) {
      ret = FreeTrajectoryState();
    } else {
      ret = startingState(*tk);
    }
  } else {
    ret = FreeTrajectoryState(GlobalPoint(reco.vx(), reco.vy(), reco.vz()),
                              GlobalVector(reco.px(), reco.py(), reco.pz()),
                              reco.charge(),
                              magfield_.product());
  }
  return ret;
}

FreeTrajectoryState PropagateToMuon::startingState ( const reco::Track &  tk ) const

private

Starting state for the propagation.

Definition at line 123 of file PropagateToMuon.cc.

References AtVertex, cosmicPropagation_, trajectoryStateTransform::initialFreeState(), trajectoryStateTransform::innerFreeState(), Innermost, reco::Track::innerPosition(), edm::ESHandleBase::isValid(), magfield_, trajectoryStateTransform::outerFreeState(), Outermost, reco::Track::outerPosition(), edm::ESHandle< class >::product(), and whichState_.

                                                                            {
  if (!magfield_.isValid())
    throw cms::Exception("NotInitialized")
        << "PropagateToMuon: You must call init(const edm::EventSetup &iSetup) before using this object.\n";
  WhichState state = whichState_;
  if (cosmicPropagation_) {
    if (whichState_ == Innermost) {
      state = tk.innerPosition().Mag2() <= tk.outerPosition().Mag2() ? Innermost : Outermost;
    } else if (whichState_ == Outermost) {
      state = tk.innerPosition().Mag2() <= tk.outerPosition().Mag2() ? Outermost : Innermost;
    }
  }
  switch (state) {
    case Innermost:
      return trajectoryStateTransform::innerFreeState(tk, magfield_.product());
    case Outermost:
      return trajectoryStateTransform::outerFreeState(tk, magfield_.product());

    case AtVertex:
    default:
      return trajectoryStateTransform::initialFreeState(tk, magfield_.product());
  }
}

FreeTrajectoryState PropagateToMuon::startingState ( const SimTrack &  tk, const edm::SimVertexContainer &  vtxs  ) const

private

Starting state for the propagation.

Definition at line 147 of file PropagateToMuon.cc.

References CoreSimTrack::charge(), edm::ESHandleBase::isValid(), magfield_, CoreSimTrack::momentum(), SimTrack::noVertex(), edm::ESHandle< class >::product(), and SimTrack::vertIndex().

                                                                                                              {
  if (!magfield_.isValid())
    throw cms::Exception("NotInitialized")
        << "PropagateToMuon: You must call init(const edm::EventSetup &iSetup) before using this object.\n";
  if (tk.noVertex())
    throw cms::Exception("UnsupportedOperation")
        << "I can't propagate simtracks without a vertex, I don't know where to start from.\n";
  const math::XYZTLorentzVectorD &vtx = (vtxs)[tk.vertIndex()].position();
  return FreeTrajectoryState(GlobalPoint(vtx.X(), vtx.Y(), vtx.Z()),
                             GlobalVector(tk.momentum().X(), tk.momentum().Y(), tk.momentum().Z()),
                             int(tk.charge()),
                             magfield_.product());
}

Member Data Documentation

const BoundCylinder* PropagateToMuon::barrelCylinder_

private

Definition at line 90 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

double PropagateToMuon::barrelHalfLength_

private

Definition at line 92 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

bool PropagateToMuon::cosmicPropagation_

private

for cosmics, some things change: the along-opposite is not in-out, nor the innermost/outermost states are in-out really

Definition at line 77 of file PropagateToMuon.h.

Referenced by extrapolate(), PropagateToMuon(), and startingState().

const BoundDisk * PropagateToMuon::endcapDiskNeg_[3]

private

Definition at line 91 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

const BoundDisk* PropagateToMuon::endcapDiskPos_[3]

private

Definition at line 91 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

std::pair<float, float> PropagateToMuon::endcapRadii_[3]

private

Definition at line 93 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

bool PropagateToMuon::fallbackToME1_

private

Fallback to ME1 if propagation to ME2 fails.

Definition at line 70 of file PropagateToMuon.h.

Referenced by extrapolate().

edm::ESHandle<MagneticField> PropagateToMuon::magfield_

private

Definition at line 82 of file PropagateToMuon.h.

Referenced by extrapolate(), init(), and startingState().

edm::ESGetToken<MagneticField, IdealMagneticFieldRecord> PropagateToMuon::magfieldToken_

private

Definition at line 86 of file PropagateToMuon.h.

Referenced by init().

edm::ESHandle<MuonDetLayerGeometry> PropagateToMuon::muonGeometry_

private

Definition at line 84 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

edm::ESGetToken<MuonDetLayerGeometry, MuonRecoGeometryRecord> PropagateToMuon::muonGeometryToken_

private

Definition at line 88 of file PropagateToMuon.h.

Referenced by init().

edm::ESHandle<Propagator> PropagateToMuon::propagator_

private

Definition at line 83 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

edm::ESHandle<Propagator> PropagateToMuon::propagatorAny_

private

Definition at line 83 of file PropagateToMuon.h.

Referenced by getBestDet(), and init().

edm::ESGetToken<Propagator, TrackingComponentsRecord> PropagateToMuon::propagatorAnyToken_

private

Definition at line 87 of file PropagateToMuon.h.

Referenced by init().

edm::ESHandle<Propagator> PropagateToMuon::propagatorOpposite_

private

Definition at line 83 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

edm::ESGetToken<Propagator, TrackingComponentsRecord> PropagateToMuon::propagatorOppositeToken_

private

Definition at line 87 of file PropagateToMuon.h.

Referenced by init().

edm::ESGetToken<Propagator, TrackingComponentsRecord> PropagateToMuon::propagatorToken_

private

Definition at line 87 of file PropagateToMuon.h.

Referenced by init().

bool PropagateToMuon::useMB2_

private

Propagate to MB2 (default) instead of MB1.

Definition at line 67 of file PropagateToMuon.h.

Referenced by extrapolate(), and init().

bool PropagateToMuon::useMB2InOverlap_

private

Definition at line 79 of file PropagateToMuon.h.

Referenced by init().

bool PropagateToMuon::useSimpleGeometry_

private

Use simplified geometry (cylinders and disks, not individual chambers)

Definition at line 64 of file PropagateToMuon.h.

Referenced by extrapolate().

WhichState PropagateToMuon::whichState_

private

Definition at line 74 of file PropagateToMuon.h.

Referenced by extrapolate(), PropagateToMuon(), and startingState().

WhichTrack PropagateToMuon::whichTrack_

private

Labels for input collections.

Definition at line 73 of file PropagateToMuon.h.

Referenced by PropagateToMuon(), and startingState().