#include <RecoTracker/ConstraintProducerTest/src/TwoBodyDecayMomConstraintProducer.cc>

Inheritance diagram for TwoBodyDecayMomConstraintProducer:

Public Member Functions
	TwoBodyDecayMomConstraintProducer (const edm::ParameterSet &)

	~TwoBodyDecayMomConstraintProducer () override=default

Public Member Functions inherited from edm::global::EDProducer<>
	EDProducer ()=default

bool	hasAbilityToProduceInBeginLumis () const final

bool	hasAbilityToProduceInBeginRuns () const final

bool	hasAbilityToProduceInEndLumis () const final

bool	hasAbilityToProduceInEndRuns () const final

bool	wantsGlobalLuminosityBlocks () const final

bool	wantsGlobalRuns () const final

bool	wantsStreamLuminosityBlocks () const final

bool	wantsStreamRuns () const final

Public Member Functions inherited from edm::global::EDProducerBase
	EDProducerBase ()

ModuleDescription const &	moduleDescription () const

	~EDProducerBase () override

Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

std::vector< edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const

	ProducerBase ()

std::vector< edm::ProductResolverIndex > const &	putTokenIndexToProductResolverIndex () const

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...

void	resolvePutIndicies (BranchType iBranchType, ModuleToResolverIndicies const &iIndicies, std::string const &moduleLabel)

	~ProducerBase () noexcept(false) override

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

void	convertCurrentProcessAlias (std::string const &processName)
	Convert "@currentProcess" in InputTag process names to the actual current process name. More...

	EDConsumerBase ()

	EDConsumerBase (EDConsumerBase const &)=delete

	EDConsumerBase (EDConsumerBase &&)=default

ESProxyIndex const *	esGetTokenIndices (edm::Transition iTrans) const

ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

std::vector< ProductResolverIndexAndSkipBit > const &	itemsToGetFrom (BranchType iType) const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const

EDConsumerBase const &	operator= (EDConsumerBase const &)=delete

EDConsumerBase &	operator= (EDConsumerBase &&)=default

bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

ProductResolverIndexAndSkipBit	uncheckedIndexFrom (EDGetToken) const

void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)

void	updateLookup (eventsetup::ESRecordsToProxyIndices const &)

virtual	~EDConsumerBase () noexcept(false)

Private Types
enum	MomentumForRefitting { atVertex, atInnermostSurface }

Private Member Functions
std::pair< bool, TrajectoryStateOnSurface >	innermostState (const reco::TransientTrack &ttrack) const

bool	match (const TrajectoryStateOnSurface &newTsos, const TrajectoryStateOnSurface &oldTsos) const

std::pair< double, double >	momentaAtInnermostSurface (const TwoBodyDecay &tbd, const std::vector< reco::TransientTrack > &ttracks, const MagneticField *magField) const

std::pair< double, double >	momentaAtVertex (const TwoBodyDecay &tbd) const

void	produce (edm::StreamID streamid, edm::Event &, const edm::EventSetup &) const override

Static Private Member Functions
static MomentumForRefitting	momentumForRefittingFromString (std::string momentumForRefittingString)

Private Attributes
const edm::InputTag	bsSrcTag_

edm::EDGetTokenT< reco::BeamSpot >	bsToken_

const double	chi2CutValue_

const double	fixedMomentumError_

const MomentumForRefitting	momentumForRefitting_

const double	primaryMass_

const double	primaryWidth_

const double	secondaryMass_

const double	sigmaPositionCutValue_

const edm::InputTag	srcTag_

const TwoBodyDecayFitter	tbdFitter_

edm::EDGetTokenT< reco::TrackCollection >	trackCollToken_

Additional Inherited Members
Public Types inherited from edm::global::EDProducerBase
typedef EDProducerBase	ModuleType

Public Types inherited from edm::ProducerBase
using	ModuleToResolverIndicies = std::unordered_multimap< std::string, std::tuple< edm::TypeID const , const char , edm::ProductResolverIndex >>

typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

Static Public Member Functions inherited from edm::global::EDProducerBase
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Protected Member Functions inherited from edm::ProducerBase
ProducesCollector	producesCollector ()

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes ()

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag const &tag)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Detailed Description

Description: Produces track parameter constraints for refitting tracks, according to information TwoBodyDecay kinematic fit.

Original Author: Edmund Widl

Definition at line 39 of file TwoBodyDecayMomConstraintProducer.cc.

Member Enumeration Documentation

enum TwoBodyDecayMomConstraintProducer::MomentumForRefitting

private

Enumerator
atVertex
atInnermostSurface

Definition at line 69 of file TwoBodyDecayMomConstraintProducer.cc.

69 { atVertex, atInnermostSurface };

TwoBodyDecayMomConstraintProducer::atVertex

Definition: TwoBodyDecayMomConstraintProducer.cc:69

TwoBodyDecayMomConstraintProducer::atInnermostSurface

Definition: TwoBodyDecayMomConstraintProducer.cc:69

Constructor & Destructor Documentation

TwoBodyDecayMomConstraintProducer::TwoBodyDecayMomConstraintProducer ( const edm::ParameterSet & iConfig )

explicit

Definition at line 81 of file TwoBodyDecayMomConstraintProducer.cc.

References bsSrcTag_, bsToken_, HLT_2018_cff::InputTag, srcTag_, and trackCollToken_.

     : srcTag_(iConfig.getParameter<edm::InputTag>("src")),
       bsSrcTag_(iConfig.getParameter<edm::InputTag>("beamSpot")),
       tbdFitter_(iConfig),
       primaryMass_(iConfig.getParameter<double>("primaryMass")),
       primaryWidth_(iConfig.getParameter<double>("primaryWidth")),
       secondaryMass_(iConfig.getParameter<double>("secondaryMass")),
       sigmaPositionCutValue_(iConfig.getParameter<double>("sigmaPositionCut")),
       chi2CutValue_(iConfig.getParameter<double>("chi2Cut")),
       fixedMomentumError_(iConfig.getParameter<double>("fixedMomentumError")),
       momentumForRefitting_(momentumForRefittingFromString(iConfig.getParameter<std::string>("momentumForRefitting"))) {
   trackCollToken_ = consumes<reco::TrackCollection>(edm::InputTag(srcTag_));
   bsToken_ = consumes<reco::BeamSpot>(edm::InputTag(bsSrcTag_));
 
   produces<std::vector<MomentumConstraint> >();
   produces<TrackMomConstraintAssociationCollection>();
 
   //   //debug
   //   histos_["deltaEta1"] = new TH1F( "deltaEta1", "deltaEta1", 200, -1., 1. );
   //   histos_["deltaP1"] = new TH1F( "deltaP1", "deltaP1", 200, -50., 50. );
 
   //   histos_["deltaEta2"] = new TH1F( "deltaEta2", "deltaEta2", 200, -1., 1. );
   //   histos_["deltaP2"] = new TH1F( "deltaP2", "deltaP2", 200, -50., 50. );
 }

TwoBodyDecayMomConstraintProducer::~TwoBodyDecayMomConstraintProducer ( )

overridedefault

Member Function Documentation

std::pair< bool, TrajectoryStateOnSurface > TwoBodyDecayMomConstraintProducer::innermostState ( const reco::TransientTrack & ttrack ) const

private

Definition at line 221 of file TwoBodyDecayMomConstraintProducer.cc.

References TrajectoryStateOnSurface::globalPosition(), reco::TransientTrack::innermostMeasurementState(), insideOut, reco::TransientTrack::outermostMeasurementState(), and PV3DBase< T, PVType, FrameType >::perp().

Referenced by momentaAtInnermostSurface().

                                             {
   double outerR = ttrack.outermostMeasurementState().globalPosition().perp();
   double innerR = ttrack.innermostMeasurementState().globalPosition().perp();
   bool insideOut = (outerR > innerR);
   return std::make_pair(insideOut, insideOut ? ttrack.innermostMeasurementState() : ttrack.outermostMeasurementState());
 }

bool TwoBodyDecayMomConstraintProducer::match	(	const TrajectoryStateOnSurface &	newTsos,
		const TrajectoryStateOnSurface &	oldTsos
	)		const

private

Definition at line 229 of file TwoBodyDecayMomConstraintProducer.cc.

References TrajectoryStateOnSurface::localPosition(), sigmaPositionCutValue_, PV3DBase< T, PVType, FrameType >::x(), and PV3DBase< T, PVType, FrameType >::y().

Referenced by momentaAtInnermostSurface().

                                                                                              {
   LocalPoint lp1 = newTsos.localPosition();
   LocalPoint lp2 = oldTsos.localPosition();
 
   double deltaX = lp1.x() - lp2.x();
   double deltaY = lp1.y() - lp2.y();
 
   return ((fabs(deltaX) < sigmaPositionCutValue_) && (fabs(deltaY) < sigmaPositionCutValue_));
 }

std::pair< double, double > TwoBodyDecayMomConstraintProducer::momentaAtInnermostSurface	(	const TwoBodyDecay &	tbd,
		const std::vector< reco::TransientTrack > &	ttracks,
		const MagneticField *	magField
	)		const

private

Get the innermost trajectory states

Construct the TBD trajectory states

Match the old and the new estimates for the trajectory state

Definition at line 194 of file TwoBodyDecayMomConstraintProducer.cc.

References innermostState(), TwoBodyDecayTrajectoryState::isValid(), match(), mps_fire::result, secondaryMass_, and TwoBodyDecayTrajectoryState::trajectoryStates().

Referenced by produce().

                                                                                                                 {
   std::pair<double, double> result = std::make_pair(-1., -1.);
 
   std::pair<bool, TrajectoryStateOnSurface> oldInnermostState1 = innermostState(ttracks[0]);
   std::pair<bool, TrajectoryStateOnSurface> oldInnermostState2 = innermostState(ttracks[1]);
   if (!oldInnermostState1.second.isValid() || !oldInnermostState2.second.isValid())
     return result;
 
   TwoBodyDecayTrajectoryState::TsosContainer trackTsos(oldInnermostState1.second, oldInnermostState2.second);
   TwoBodyDecayTrajectoryState tbdTrajState(trackTsos, tbd, secondaryMass_, magField, true);
   if (!tbdTrajState.isValid())
     return result;
 
   bool match1 = match(tbdTrajState.trajectoryStates(true).first, oldInnermostState1.second);
   bool match2 = match(tbdTrajState.trajectoryStates(true).second, oldInnermostState2.second);
   if (!match1 || !match2)
     return result;
 
   result = std::make_pair(fabs(1. / tbdTrajState.trajectoryStates(true).first.localParameters().qbp()),
                           fabs(1. / tbdTrajState.trajectoryStates(true).second.localParameters().qbp()));
   return result;
 }

std::pair< double, double > TwoBodyDecayMomConstraintProducer::momentaAtVertex ( const TwoBodyDecay & tbd ) const

private

Definition at line 186 of file TwoBodyDecayMomConstraintProducer.cc.

References TwoBodyDecayModel::cartesianSecondaryMomenta(), TwoBodyDecayParameters::mass, and secondaryMass_.

Referenced by produce().

                                                                                                         {
   // construct global trajectory parameters at the starting point
   TwoBodyDecayModel tbdDecayModel(tbd[TwoBodyDecayParameters::mass], secondaryMass_);
   std::pair<AlgebraicVector, AlgebraicVector> secondaryMomenta = tbdDecayModel.cartesianSecondaryMomenta(tbd);
 
   return std::make_pair(secondaryMomenta.first.norm(), secondaryMomenta.second.norm());
 }

TwoBodyDecayMomConstraintProducer::MomentumForRefitting TwoBodyDecayMomConstraintProducer::momentumForRefittingFromString ( std::string momentumForRefittingString )

staticprivate

Definition at line 241 of file TwoBodyDecayMomConstraintProducer.cc.

References atInnermostSurface, atVertex, DEFINE_FWK_MODULE, and Exception.

                                                                                                    {
   if (strMomentumForRefitting == "atVertex") {
     return atVertex;
   } else if (strMomentumForRefitting == "atInnermostSurface") {
     return atInnermostSurface;
   } else {
     throw cms::Exception("TwoBodyDecayMomConstraintProducer") << "value of config  variable 'momentumForRefitting': "
                                                               << "has to be 'atVertex' or 'atInnermostSurface'";
   }
 }

void TwoBodyDecayMomConstraintProducer::produce	(	edm::StreamID	streamid,
		edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)		const

overrideprivate

Construct virtual measurement (for TBD)

Get transient tracks from track collection

Fit the TBD

Definition at line 106 of file TwoBodyDecayMomConstraintProducer.cc.

References atInnermostSurface, atVertex, pwdgSkimBPark_cfi::beamSpot, bsToken_, TwoBodyDecay::chi2(), chi2CutValue_, TwoBodyDecayFitter::estimate(), fixedMomentumError_, edm::EventSetup::get(), edm::Event::getByToken(), edm::Event::getRefBeforePut(), TwoBodyDecay::isValid(), momentaAtInnermostSurface(), momentaAtVertex(), momentumForRefitting_, eostools::move(), or, convertSQLitetoXML_cfg::output, primaryMass_, primaryWidth_, edm::Handle< T >::product(), edm::ESHandle< T >::product(), edm::Event::put(), secondaryMass_, reco::TransientTrack::setES(), tbdFitter_, pfDisplacedTrackerVertex_cfi::trackColl, and trackCollToken_.

                                                                                    {
   using namespace edm;
 
   Handle<reco::TrackCollection> trackColl;
   iEvent.getByToken(trackCollToken_, trackColl);
 
   Handle<reco::BeamSpot> beamSpot;
   iEvent.getByToken(bsToken_, beamSpot);
 
   ESHandle<MagneticField> magField;
   iSetup.get<IdealMagneticFieldRecord>().get(magField);
 
   edm::RefProd<std::vector<MomentumConstraint> > rPairs = iEvent.getRefBeforePut<std::vector<MomentumConstraint> >();
   std::unique_ptr<std::vector<MomentumConstraint> > pairs(new std::vector<MomentumConstraint>);
   std::unique_ptr<TrackMomConstraintAssociationCollection> output(
       new TrackMomConstraintAssociationCollection(trackColl, rPairs));
 
   if (trackColl->size() == 2) {
     TwoBodyDecayVirtualMeasurement vm(primaryMass_, primaryWidth_, secondaryMass_, *beamSpot.product());
 
     std::vector<reco::TransientTrack> ttracks(2);
     ttracks[0] = reco::TransientTrack(reco::TrackRef(trackColl, 0), magField.product());
     ttracks[0].setES(iSetup);
     ttracks[1] = reco::TransientTrack(reco::TrackRef(trackColl, 1), magField.product());
     ttracks[1].setES(iSetup);
 
     TwoBodyDecay tbd = tbdFitter_.estimate(ttracks, vm);
 
     if (!tbd.isValid() or (tbd.chi2() > chi2CutValue_))
       return;
 
     std::pair<double, double> fitMomenta;
     if (momentumForRefitting_ == atVertex) {
       fitMomenta = momentaAtVertex(tbd);
     } else if (momentumForRefitting_ == atInnermostSurface) {
       fitMomenta = momentaAtInnermostSurface(tbd, ttracks, magField.product());
     }  // no other possibility!!!
 
     if ((fitMomenta.first > 0.) and (fitMomenta.second > 0.)) {
       // produce constraint for first track
       MomentumConstraint constraint1(fitMomenta.first, fixedMomentumError_);
       pairs->push_back(constraint1);
       output->insert(reco::TrackRef(trackColl, 0), edm::Ref<std::vector<MomentumConstraint> >(rPairs, 0));
 
       // produce constraint for second track
       MomentumConstraint constraint2(fitMomenta.second, fixedMomentumError_);
       pairs->push_back(constraint2);
       output->insert(reco::TrackRef(trackColl, 1), edm::Ref<std::vector<MomentumConstraint> >(rPairs, 1));
     }
 
     //     // debug
     //     if ( tbd.isValid() and ( fitMomenta.first > 0. ) and ( fitMomenta.second > 0. ) ) {
     //       TwoBodyDecayModel model;
     //       const std::pair< AlgebraicVector, AlgebraicVector > fitMomenta = model.cartesianSecondaryMomenta( tbd );
 
     //       TLorentzVector recoMomentum1( ttracks[0].track().px(), ttracks[0].track().py(), ttracks[0].track().pz(),
     //                  sqrt((ttracks[0].track().p()*ttracks[0].track().p())+0.105658*0.105658) );
     //       TLorentzVector fitMomentum1( fitMomenta.first[0], fitMomenta.first[1], fitMomenta.first[2],
     //                 sqrt( fitMomenta.first.normsq()+0.105658*0.105658) );
     //       histos_["deltaP1"]->Fill( recoMomentum1.P() - fitMomentum1.P() );
     //       histos_["deltaEta1"]->Fill( recoMomentum1.Eta() - fitMomentum1.Eta() );
 
     //       TLorentzVector recoMomentum2( ttracks[1].track().px(), ttracks[1].track().py(), ttracks[1].track().pz(),
     //                  sqrt((ttracks[1].track().p()*ttracks[1].track().p())+0.105658*0.105658) );
     //       TLorentzVector fitMomentum2( fitMomenta.second[0], fitMomenta.second[1], fitMomenta.second[2],
     //                 sqrt( fitMomenta.second.normsq()+0.105658*0.105658) );
     //       histos_["deltaP2"]->Fill( recoMomentum2.P() - fitMomentum2.P() );
     //       histos_["deltaEta2"]->Fill( recoMomentum2.Eta() - fitMomentum2.Eta() );
     //     }
   }
 
   iEvent.put(std::move(pairs));
   iEvent.put(std::move(output));
 }