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

Inheritance diagram for TwoBodyDecayConstraintProducer:

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

	~TwoBodyDecayConstraintProducer () 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

std::vector< bool > const &	recordProvenanceList () 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)

TypeLabelList const &	typeLabelList () const
	used by the fwk to register the list of products of this module More...

	~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 &&)=default

	EDConsumerBase (EDConsumerBase const &)=delete

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 &	operator= (EDConsumerBase &&)=default

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

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

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

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

Private Attributes
const edm::InputTag	bsSrcTag_

edm::EDGetTokenT< reco::BeamSpot >	bsToken_

const double	chi2CutValue_

const double	errorRescaleValue_

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
template<class ProductType >
BranchAliasSetterT< ProductType >	produces ()
	declare what type of product will make and with which optional label More...

template<typename ProductType , BranchType B>
BranchAliasSetterT< ProductType >	produces ()

template<typename ProductType , Transition B>
BranchAliasSetterT< ProductType >	produces ()

BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)

template<BranchType B>
BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)

template<Transition B>
BranchAliasSetter	produces (const TypeID &id, std::string instanceName=std::string(), bool recordProvenance=true)

template<typename ProductType , Transition B>
BranchAliasSetterT< ProductType >	produces (std::string instanceName)

template<class ProductType >
BranchAliasSetterT< ProductType >	produces (std::string instanceName)

template<typename ProductType , BranchType B>
BranchAliasSetterT< ProductType >	produces (std::string instanceName)

ProducesCollector	producesCollector ()

Protected Member Functions inherited from edm::EDConsumerBase
EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (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)

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

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

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (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 38 of file TwoBodyDecayConstraintProducer.cc.

Constructor & Destructor Documentation

◆ TwoBodyDecayConstraintProducer()

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

explicit

Definition at line 69 of file TwoBodyDecayConstraintProducer.cc.

     : 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")),
       errorRescaleValue_(iConfig.getParameter<double>("rescaleError")) {
   trackCollToken_ = consumes<reco::TrackCollection>(edm::InputTag(srcTag_));
   bsToken_ = consumes<reco::BeamSpot>(edm::InputTag(bsSrcTag_));
  
   produces<std::vector<TrackParamConstraint> >();
   produces<TrackParamConstraintAssociationCollection>();
  
   //   //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. );
 }

References bsSrcTag_, bsToken_, srcTag_, and trackCollToken_.

◆ ~TwoBodyDecayConstraintProducer()

TwoBodyDecayConstraintProducer::~TwoBodyDecayConstraintProducer ( )

overridedefault

Member Function Documentation

◆ innermostState()

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

private

Definition at line 184 of file TwoBodyDecayConstraintProducer.cc.

                                             {
   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());
 }

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

Referenced by produce().

◆ match()

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

private

Definition at line 192 of file TwoBodyDecayConstraintProducer.cc.

                                                                                           {
   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_));
 }

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

Referenced by produce().

◆ produce()

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

overrideprivatevirtual

Construct virtual measurement (for TBD)

Get transient tracks from track collection

Fit the TBD

Get the innermost trajectory states

Construct the TBD trajectory states

Match the old and the new estimates for the trajectory state

Implements edm::global::EDProducerBase.

Definition at line 93 of file TwoBodyDecayConstraintProducer.cc.

                                                                                 {
   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<TrackParamConstraint> > rPairs =
       iEvent.getRefBeforePut<std::vector<TrackParamConstraint> >();
   std::unique_ptr<std::vector<TrackParamConstraint> > pairs(new std::vector<TrackParamConstraint>);
   std::unique_ptr<TrackParamConstraintAssociationCollection> output(
       new TrackParamConstraintAssociationCollection(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<bool, TrajectoryStateOnSurface> oldInnermostState1 = innermostState(ttracks[0]);
     std::pair<bool, TrajectoryStateOnSurface> oldInnermostState2 = innermostState(ttracks[1]);
     if (!oldInnermostState1.second.isValid() || !oldInnermostState2.second.isValid())
       return;
  
     TwoBodyDecayTrajectoryState::TsosContainer trackTsos(oldInnermostState1.second, oldInnermostState2.second);
     TwoBodyDecayTrajectoryState tbdTrajState(trackTsos, tbd, secondaryMass_, magField.product(), true);
     if (!tbdTrajState.isValid())
       return;
  
     bool match1 = match(tbdTrajState.trajectoryStates(true).first, oldInnermostState1.second);
     bool match2 = match(tbdTrajState.trajectoryStates(true).second, oldInnermostState2.second);
     if (!match1 || !match2)
       return;
  
     // re-scale error of constraintTsos
     tbdTrajState.rescaleError(errorRescaleValue_);
  
     // produce constraint for first track
     pairs->push_back(tbdTrajState.trajectoryStates(true).first);
     output->insert(reco::TrackRef(trackColl, 0), edm::Ref<std::vector<TrackParamConstraint> >(rPairs, 0));
  
     // produce constraint for second track
     pairs->push_back(tbdTrajState.trajectoryStates(true).second);
     output->insert(reco::TrackRef(trackColl, 1), edm::Ref<std::vector<TrackParamConstraint> >(rPairs, 1));
  
     //     // debug
     //     if ( tbd.isValid() ) {
     //       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));
 }