Rivet::ZFinder Class Reference

Convenience finder of leptonically decaying Zs. More...

#include <ZFinder.hh>

Inheritance diagram for Rivet::ZFinder:

Public Types
enum class	ChargedLeptons { PROMPT , ALL }
enum class	ClusterPhotons { NONE , NODECAY , ALL }
enum class	AddPhotons { NO , YES }

Public Member Functions
Object lifetime management
virtual unique_ptr< Projection >	clone () const =0
	Clone on the heap. More...
Particle accessors
size_t	size () const
	Count the final-state particles.
size_t	size (const Cut &c) const
	Count the final-state particles after a Cut is applied.
size_t	size (const ParticleSelector &s) const
	Count the final-state particles after a selection functor is applied.
bool	empty () const
	Is this final state empty?
bool	empty (const Cut &c) const
	Is this final state empty after a Cut is applied?
bool	empty (const ParticleSelector &s) const
	Is this final state empty after a selection functor is applied?
virtual const Particles &	particles () const
	Get the particles in no particular order, with no cuts.
Particles	particles (const Cut &c) const
	Get the particles with selection cuts. More...
Particles	particles (const ParticleSelector &selector) const
	Get the particles with selection cuts via a functor. More...
Particles	particles (const ParticleSorter &sorter, const Cut &c=Cuts::open()) const
Particles	particles (const Cut &c, const ParticleSorter &sorter) const
Particles	particles (const ParticleSelector &selector, const ParticleSorter &sorter) const
Particles	particles (const ParticleSorter &sorter, const ParticleSelector &selector) const
Particles	rawParticles () const
Particles	particlesByPt (const Cut &c=Cuts::open()) const
Particles	particlesByPt (const ParticleSelector &selector) const
Particles	particlesByPt (double ptmin) const
Standard constructors and destructors.
virtual std::string	name () const
	Get the name of the projection. More...
bool	valid () const
	Get the state of the projetion.
bool	failed () const
	Get the state of the projetion.
Projection operation and comparison
bool	before (const Projection &p) const
Projection "getting" functions
std::set< ConstProjectionPtr >	getProjections () const
	Get the contained projections, including recursion.
bool	hasProjection (const std::string &name) const
	Does this applier have a projection registered under the name name?
template<typename PROJ >
const PROJ &	getProjection (const std::string &name) const
const Projection &	getProjection (const std::string &name) const
template<typename PROJ >
const PROJ &	get (const std::string &name) const

Protected Member Functions
Projection registration functions
template<typename PROJ >
const PROJ &	declareProjection (const PROJ &proj, const std::string &name)
	Register a contained projection. More...
template<typename PROJ >
const PROJ &	declare (const PROJ &proj, const std::string &name)
	Register a contained projection (user-facing version) More...
template<typename PROJ >
const PROJ &	declare (const std::string &name, const PROJ &proj)
	Register a contained projection (user-facing, arg-reordered version) More...

For JetAlg compatibility
Todo: Replace with cuts() accessor virtual Cut cuts() const { return _cuts; }
typedef Particle	entity_type
typedef Particles	collection_type
const collection_type &	entities () const
	Template-usable interface common to JetAlg.

Constructors
	ZFinder (const FinalState &inputfs, const Cut &cuts, PdgId pid, double minmass, double maxmass, double dRmax=0.1, ChargedLeptons chLeptons=ChargedLeptons::PROMPT, ClusterPhotons clusterPhotons=ClusterPhotons::NODECAY, AddPhotons trackPhotons=AddPhotons::NO, double masstarget=91.2 *GeV)
	Constructor taking cuts object. More...
	ZFinder (const FinalState &inputfs, const Cut &cuts, PdgId pid, double minmass, double maxmass, double dRmax, ClusterPhotons clusterPhotons, AddPhotons trackPhotons=AddPhotons::NO, double masstarget=91.2 *GeV)
	DEFAULT_RIVET_PROJ_CLONE (ZFinder)
	Clone on the heap.
const Particles &	bosons () const
const Particle &	boson () const
	Access to the found boson (assuming it exists).
const Particles &	constituentLeptons () const
const Particles &	constituents () const
const VetoedFinalState &	remainingFinalState () const
void	clear ()
	Clear the projection.
void	project (const Event &e)
	Apply the projection on the supplied event. More...
CmpState	compare (const Projection &p) const
	Compare projections. More...

Beam configuration
Todo: Does it really make sense to restrict Projections to particular beam configs? Do we use this in practice?
virtual const std::set< PdgIdPair >	beamPairs () const
Projection &	addPdgIdPair (PdgId beam1, PdgId beam2)
Log &	getLog () const
	Get a Log object based on the getName() property of the calling projection object.
void	setName (const std::string &name)
	Used by derived classes to set their name.
void	fail ()
	Set the projection in an unvalid state.
Cmp< Projection >	mkNamedPCmp (const Projection &otherparent, const std::string &pname) const
Cmp< Projection >	mkPCmp (const Projection &otherparent, const std::string &pname) const

Projection applying functions
template<typename PROJ = Projection>
std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & >	applyProjection (const Event &evt, const Projection &proj) const
template<typename PROJ = Projection>
std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & >	applyProjection (const Event &evt, const PROJ &proj) const
template<typename PROJ = Projection>
std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & >	applyProjection (const Event &evt, const std::string &name) const
template<typename PROJ = Projection>
std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & >	apply (const Event &evt, const Projection &proj) const
	Apply the supplied projection on event evt (user-facing alias).
template<typename PROJ = Projection>
std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & >	apply (const Event &evt, const PROJ &proj) const
	Apply the supplied projection on event evt (user-facing alias).
template<typename PROJ = Projection>
std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & >	apply (const Event &evt, const std::string &name) const
	Apply the supplied projection on event evt (user-facing alias).
template<typename PROJ = Projection>
std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & >	apply (const std::string &name, const Event &evt) const
	Apply the supplied projection on event evt (convenience arg-reordering alias).
void	markAsOwned () const
	Mark this object as owned by a proj-handler.
ProjectionHandler &	getProjHandler () const
	Get a reference to the ProjectionHandler for this thread.

Detailed Description

Convenience finder of leptonically decaying Zs.

Chain together different projections as convenience for finding Z's from two leptons in the final state, including photon clustering.

Todo:

Alias then rename as Dileptons

Constructor & Destructor Documentation

ZFinder() [1/2]

Rivet::ZFinder::ZFinder	(	const FinalState &	inputfs,
		const Cut &	cuts,
		PdgId	pid,
		double	minmass,
		double	maxmass,
		double	dRmax = 0.1,
		ChargedLeptons	chLeptons = ChargedLeptons::PROMPT,
		ClusterPhotons	clusterPhotons = ClusterPhotons::NODECAY,
		AddPhotons	trackPhotons = AddPhotons::NO,
		double	masstarget = 91.2 *GeV
	)

Constructor taking cuts object.

Parameters

inputfs	Input final state
cuts	Lepton cuts
pid	Type of the leptons
minmass,maxmass	Dilepton mass window
dRmax	Maximum dR of photons around leptons to take into account for Z reconstruction (only relevant if one of the following are true)
chLeptons	The type of charged leptons considered
clusterPhotons	Whether such photons are supposed to be clustered to the lepton objects and thus Z mom
trackPhotons	Whether such photons should be considered constituent particles
masstarget	The expected (transverse) mass value, if resolving ambiguities

ZFinder() [2/2]

Rivet::ZFinder::ZFinder ( const FinalState &  inputfs, const Cut &  cuts, PdgId  pid, double  minmass, double  maxmass, double  dRmax, ClusterPhotons  clusterPhotons, AddPhotons  trackPhotons = AddPhotons::NO, double  masstarget = 91.2*GeV  )

inline

Backward-compatible constructor with implicit chLeptons mode = PROMPTCHLEPTONS

Deprecated:

Remove this and always use the constructor with chLeptons argument.

Member Function Documentation

addPdgIdPair()

Projection & Rivet::Projection::addPdgIdPair ( PdgId  beam1, PdgId  beam2  )

inlineinherited

Add a colliding beam pair.

Todo:

This deserves a better name!

applyProjection() [1/3]

template<typename PROJ = Projection>

std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & > Rivet::ProjectionApplier::applyProjection ( const Event &  evt, const PROJ &  proj  ) const

inlineinherited

Apply the supplied projection on event evt.

Deprecated:

Prefer the simpler apply<> form

applyProjection() [2/3]

template<typename PROJ = Projection>

std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & > Rivet::ProjectionApplier::applyProjection ( const Event &  evt, const Projection &  proj  ) const

inlineinherited

Apply the supplied projection on event evt.

Deprecated:

Prefer the simpler apply<> form

applyProjection() [3/3]

template<typename PROJ = Projection>

std::enable_if_t< std::is_base_of< Projection, PROJ >::value, const PROJ & > Rivet::ProjectionApplier::applyProjection ( const Event &  evt, const std::string &  name  ) const

inlineinherited

Apply the named projection on event evt.

Deprecated:

Prefer the simpler apply<> form

References Rivet::ProjectionApplier::name().

beamPairs()

virtual const std::set< PdgIdPair > Rivet::Projection::beamPairs ( ) const

virtualinherited

Return the allowed beam pairs on which this projection can operate, not including recursion. Derived classes should ensure that all contained projections are registered in the _projections set for the beam constraint chaining to work.

Todo:

Remove the beam constraints system from projections.

before()

bool Rivet::Projection::before ( const Projection &  p ) const

inherited

Determine whether this object should be ordered before the object p given as argument. If p is of a different class than this, the before() function of the corresponding type_info objects is used. Otherwise, if the objects are of the same class, the virtual compare(const Projection &) will be returned.

bosons()

const Particles & Rivet::ZFinder::bosons ( ) const

inline

Access to the found bosons

Note

Currently either 0 or 1 boson can be found.

References Rivet::ParticleFinder::particles().

Referenced by boson().

clone()

virtual unique_ptr< Projection > Rivet::ParticleFinder::clone ( ) const

pure virtualinherited

Clone on the heap.

Implements Rivet::Projection.

Implemented in Rivet::ALICE::PrimaryParticles.

compare()

CmpState Rivet::ZFinder::compare ( const Projection &  p ) const

protectedvirtual

Compare projections.

Reimplemented from Rivet::ParticleFinder.

constituentLeptons()

const Particles & Rivet::ZFinder::constituentLeptons

(

)

const

Access to the Z constituent clustered leptons

For example, to make more fine-grained cuts on the clustered leptons. The positive charge constituent is first in the list (if not empty), and the negative one second.

declare() [1/2]

template<typename PROJ >

const PROJ & Rivet::ProjectionApplier::declare ( const PROJ &  proj, const std::string &  name  )

inlineprotectedinherited

Register a contained projection (user-facing version)

Todo:

Add SFINAE to require that PROJ inherit from Projection

References Rivet::ProjectionApplier::declareProjection(), and Rivet::ProjectionApplier::name().

Referenced by Rivet::CentralEtHCM::CentralEtHCM(), Rivet::CentralityEstimator::CentralityEstimator(), Rivet::ChargedLeptons::ChargedLeptons(), Rivet::ALICE::CLMultiplicity< INNER >::CLMultiplicity(), Rivet::DISDiffHadron::DISDiffHadron(), Rivet::DISFinalState::DISFinalState(), Rivet::DISKinematics::DISKinematics(), Rivet::DISLepton::DISLepton(), Rivet::GammaGammaFinalState::GammaGammaFinalState(), Rivet::GammaGammaKinematics::GammaGammaKinematics(), Rivet::GammaGammaLeptons::GammaGammaLeptons(), Rivet::GeneratedCentrality::GeneratedCentrality(), Rivet::HadronicFinalState::HadronicFinalState(), Rivet::HeavyHadrons::HeavyHadrons(), Rivet::Hemispheres::Hemispheres(), Rivet::InvisibleFinalState::InvisibleFinalState(), Rivet::LeadingParticlesFinalState::LeadingParticlesFinalState(), Rivet::LossyFinalState< FILTER >::LossyFinalState(), Rivet::MC_pPbMinBiasTrigger::MC_pPbMinBiasTrigger(), Rivet::MC_SumETFwdPbCentrality::MC_SumETFwdPbCentrality(), Rivet::ATLAS::MinBiasTrigger::MinBiasTrigger(), Rivet::MissingMomentum::MissingMomentum(), Rivet::NeutralFinalState::NeutralFinalState(), Rivet::NonHadronicFinalState::NonHadronicFinalState(), Rivet::ParisiTensor::ParisiTensor(), Rivet::PercentileProjection::PercentileProjection(), Rivet::PrimaryHadrons::PrimaryHadrons(), Rivet::SmearedJets::SmearedJets(), Rivet::SmearedMET::SmearedMET(), Rivet::SmearedParticles::SmearedParticles(), Rivet::Spherocity::Spherocity(), Rivet::ATLAS::SumET_PB_Centrality::SumET_PB_Centrality(), Rivet::ATLAS::SumET_PBPB_Centrality::SumET_PBPB_Centrality(), Rivet::TauFinder::TauFinder(), Rivet::TriggerCDFRun0Run1::TriggerCDFRun0Run1(), Rivet::TriggerCDFRun2::TriggerCDFRun2(), Rivet::UndressBeamLeptons::UndressBeamLeptons(), Rivet::ALICE::V0AndTrigger::V0AndTrigger(), Rivet::ALICE::V0Trigger< MODE >::V0Trigger(), Rivet::VetoedFinalState::VetoedFinalState(), Rivet::VisibleFinalState::VisibleFinalState(), Rivet::CentralityProjection::add(), Rivet::VetoedFinalState::addVetoOnThisFinalState(), and Rivet::CentralityBinner< T, MDist >::setProjection().

declare() [2/2]

template<typename PROJ >

const PROJ & Rivet::ProjectionApplier::declare ( const std::string &  name, const PROJ &  proj  )

inlineprotectedinherited

Register a contained projection (user-facing, arg-reordered version)

Todo:

Add SFINAE to require that PROJ inherit from Projection

References Rivet::ProjectionApplier::declareProjection(), and Rivet::ProjectionApplier::name().

declareProjection()

template<typename PROJ >

const PROJ & Rivet::ProjectionApplier::declareProjection ( const PROJ &  proj, const std::string &  name  )

inlineprotectedinherited

Register a contained projection.

The type of the argument is used to instantiate a new projection internally: this new object is applied to events rather than the argument object. Hence you are advised to only use locally-scoped Projection objects in your Projection and Analysis constructors, and to avoid polymorphism (e.g. handling ConcreteProjection via a pointer or reference to type Projection) since this will screw up the internal type management.

Todo:

Add SFINAE to require that PROJ inherit from Projection

References Rivet::ProjectionApplier::name().

Referenced by Rivet::ProjectionApplier::declare().

get()

template<typename PROJ >

const PROJ & Rivet::ProjectionApplier::get ( const std::string &  name ) const

inlineinherited

Get the named projection, specifying return type via a template argument (user-facing alias).

Todo:

Add SFINAE to require that PROJ inherit from Projection

References Rivet::ProjectionApplier::name().

getProjection() [1/2]

template<typename PROJ >

const PROJ & Rivet::ProjectionApplier::getProjection ( const std::string &  name ) const

inlineinherited

Get the named projection, specifying return type via a template argument.

Todo:

Add SFINAE to require that PROJ inherit from Projection

References Rivet::ProjectionHandler::getProjection(), Rivet::ProjectionApplier::getProjHandler(), Rivet::ProjectionApplier::name(), and Rivet::Kin::p().

Referenced by Rivet::CentralityProjection::compare(), and Rivet::pcmp().

getProjection() [2/2]

const Projection & Rivet::ProjectionApplier::getProjection ( const std::string &  name ) const

inlineinherited

Get the named projection (non-templated, so returns as a reference to a Projection base class).

References Rivet::ProjectionHandler::getProjection(), Rivet::ProjectionApplier::getProjHandler(), and Rivet::ProjectionApplier::name().

mkNamedPCmp()

Cmp< Projection > Rivet::Projection::mkNamedPCmp ( const Projection &  otherparent, const std::string &  pname  ) const

protectedinherited

Shortcut to make a named Cmp<Projection> comparison with the *this object automatically passed as one of the parent projections.

Referenced by Rivet::MC_SumETFwdPbCentrality::compare(), Rivet::MC_pPbMinBiasTrigger::compare(), Rivet::BeamThrust::compare(), Rivet::CentralEtHCM::compare(), Rivet::DISFinalState::compare(), Rivet::EventMixingBase::compare(), Rivet::FParameter::compare(), Rivet::GammaGammaFinalState::compare(), Rivet::HeavyHadrons::compare(), Rivet::Hemispheres::compare(), Rivet::LossyFinalState< FILTER >::compare(), Rivet::PercentileProjection::compare(), Rivet::Spherocity::compare(), Rivet::Thrust::compare(), Rivet::ATLAS::SumET_PB_Centrality::compare(), Rivet::ATLAS::SumET_PBPB_Centrality::compare(), Rivet::ATLAS::MinBiasTrigger::compare(), Rivet::CentralityEstimator::compare(), Rivet::GeneratedCentrality::compare(), Rivet::STAR_BES_Centrality::compare(), and Rivet::BRAHMSCentrality::compare().

mkPCmp()

Cmp< Projection > Rivet::Projection::mkPCmp ( const Projection &  otherparent, const std::string &  pname  ) const

protectedinherited

Shortcut to make a named Cmp<Projection> comparison with the *this object automatically passed as one of the parent projections.

Note

Alias for mkNamedPCmp

Referenced by Rivet::ALICE::PrimaryParticles::compare(), Rivet::SmearedJets::compare(), Rivet::SmearedMET::compare(), Rivet::SmearedParticles::compare(), and Rivet::Correlators::compare().

name()

virtual std::string Rivet::Projection::name ( ) const

inlinevirtualinherited

Get the name of the projection.

Implements Rivet::ProjectionApplier.

Referenced by Rivet::VetoedFinalState::addVetoOnThisFinalState(), Rivet::Projection::getLog(), and Rivet::Projection::setName().

particles() [1/6]

Particles Rivet::ParticleFinder::particles ( const Cut &  c ) const

inlineinherited

Get the particles with selection cuts.

Note

Returns a copy rather than a reference, due to the cuts.

References Rivet::filter_select(), and Rivet::ParticleFinder::particles().

particles() [2/6]

Particles Rivet::ParticleFinder::particles ( const Cut &  c, const ParticleSorter &  sorter  ) const

inlineinherited

Get the particles, ordered by supplied sorting function object

Note

Returns a copy rather than a reference, due to cuts and sorting.

References Rivet::ParticleFinder::particles(), and Rivet::sortBy().

particles() [3/6]

Particles Rivet::ParticleFinder::particles ( const ParticleSelector &  selector ) const

inlineinherited

Get the particles with selection cuts via a functor.

Note

Returns a copy rather than a reference, due to the cuts.

References Rivet::filter_select(), and Rivet::ParticleFinder::particles().

particles() [4/6]

Particles Rivet::ParticleFinder::particles ( const ParticleSelector &  selector, const ParticleSorter &  sorter  ) const

inlineinherited

Get the particles, ordered by a sorting functor and filtered by a selection functor

Note

Returns a copy rather than a reference, due to cuts and sorting.

References Rivet::ParticleFinder::particles(), and Rivet::sortBy().

particles() [5/6]

Particles Rivet::ParticleFinder::particles ( const ParticleSorter &  sorter, const Cut &  c = Cuts::open()  ) const

inlineinherited

Get the particles, ordered by supplied sorting function object

Note

Returns a copy rather than a reference, due to cuts and sorting.

References Rivet::ParticleFinder::particles(), and Rivet::sortBy().

particles() [6/6]

Particles Rivet::ParticleFinder::particles ( const ParticleSorter &  sorter, const ParticleSelector &  selector  ) const

inlineinherited

Get the particles, ordered by a sorting functor and filtered by a selection functor

Note

Returns a copy rather than a reference, due to cuts and sorting.

References Rivet::ParticleFinder::particles(), and Rivet::sortBy().

particlesByPt() [1/3]

Particles Rivet::ParticleFinder::particlesByPt ( const Cut &  c = Cuts::open() ) const

inlineinherited

Get the particles, ordered by decreasing \( p_T \) and with optional cuts

This is a very common use-case, so is available as syntatic sugar for particles(c, cmpMomByPt).

References Rivet::cmpMomByPt(), and Rivet::ParticleFinder::particles().

particlesByPt() [2/3]

Particles Rivet::ParticleFinder::particlesByPt ( const ParticleSelector &  selector ) const

inlineinherited

Get the particles, ordered by decreasing \( p_T \) and with optional cuts

This is a very common use-case, so is available as syntatic sugar for particles(f, cmpMomByPt).

References Rivet::cmpMomByPt(), and Rivet::ParticleFinder::particles().

particlesByPt() [3/3]

Particles Rivet::ParticleFinder::particlesByPt ( double  ptmin ) const

inlineinherited

Get the particles, ordered by decreasing \( p_T \) and with a cut on minimum \( p_T \)

This is a very common use-case, so is available as syntatic sugar for particles(Cuts::pT >= ptmin, cmpMomByPt).

References Rivet::cmpMomByPt(), and Rivet::ParticleFinder::particles().

project()

void Rivet::ZFinder::project ( const Event &  e )

protectedvirtual

Apply the projection on the supplied event.

Implements Rivet::ParticleFinder.

rawParticles()

Particles Rivet::ParticleFinder::rawParticles ( ) const

inlineinherited

Get the raw particles in no particular order, with no cuts

Note

Raw particles are the final-state constituents, as opposed to potentially composite particles returned as the finder's particles()

References Rivet::Kin::p(), and Rivet::ParticleFinder::particles().

remainingFinalState()

const VetoedFinalState & Rivet::ZFinder::remainingFinalState

(

)

const

Access to the particles other than the Z leptons and clustered photons

Useful for e.g. input to a jet finder

---

The documentation for this class was generated from the following file:

• /Users/chrisg/software/rivet/include/Rivet/Projections/ZFinder.hh