Class providing the definition of the 4-vector interface. More...

#include <IParticle.h>

Inherits SG::AuxElement.

Inherited by PanTau::PanTauSeed, PanTau::TauConstituent, xAOD::AFPProton_v1, xAOD::CaloCluster_v1, xAOD::CaloTower_v1, xAOD::CaloVertexedClusterBase, xAOD::CompositeParticle_v1, xAOD::DiTauJet_v1, xAOD::Egamma_v1, xAOD::FlowElement_v1, xAOD::GBlock_v1, xAOD::JGTower_v1, xAOD::Jet_v1, xAOD::L2CombinedMuon_v1, xAOD::L2IsoMuon_v1, xAOD::L2StandAloneMuon_v1, xAOD::L2StandAloneMuon_v2, xAOD::Muon_v1, xAOD::NeutralParticle_v1, xAOD::PFO_v1, xAOD::Particle_v1, xAOD::TauJet_v1, xAOD::TauJet_v2, xAOD::TauJet_v3, xAOD::TauTrack_v1, xAOD::TrackCaloCluster_v1, xAOD::TrackParticle_v1, xAOD::TrigElectron_v1, xAOD::TrigPhoton_v1, xAOD::TriggerTower_v2, and xAOD::TruthParticle_v1.

Collaboration diagram for met::IParticle:

Public Member Functions
virtual	~IParticle ()=default
	Virtual destructor, to make vtable happy...
	IParticle ()=default
	IParticle (const IParticle &)=default
	IParticle (IParticle &&)=delete
IParticle &	operator= (const IParticle &)=default
IParticle &	operator= (IParticle &&)=delete
virtual Type::ObjectType	type () const=0
	The type of the object as a simple enumeration.
Functions for getting and setting user properties
template<class T>
XAOD_AUXDATA_DEPRECATED T &	auxdata (const std::string &name, const std::string &clsname="")
	Fetch an aux data variable, as a non-const reference.
template<class T>
XAOD_AUXDATA_DEPRECATED const T &	auxdata (const std::string &name, const std::string &clsname="") const
	Fetch an aux data variable, as a const reference.
template<class T>
XAOD_AUXDATA_DEPRECATED bool	isAvailable (const std::string &name, const std::string &clsname="") const
	Check if a user property is available for reading or not.
template<class T>
XAOD_AUXDATA_DEPRECATED bool	isAvailableWritable (const std::string &name, const std::string &clsname="") const
	Check if a user property is available for writing or not.

Functions describing the 4-momentum of the object
typedef TLorentzVector	FourMom_t
	Definition of the 4-momentum type.
virtual double	pt () const=0
	The transverse momentum ( \(p_T\)) of the particle.
virtual double	eta () const=0
	The pseudorapidity ( \(\eta\)) of the particle.
virtual double	phi () const=0
	The azimuthal angle ( \(\phi\)) of the particle.
virtual double	m () const=0
	The invariant mass of the particle.
virtual double	e () const=0
	The total energy of the particle.
virtual double	rapidity () const=0
	The true rapidity (y) of the particle.
virtual FourMom_t	p4 () const=0
	The full 4-momentum of the particle.

Detailed Description

Class providing the definition of the 4-vector interface.

All particle-like classes in the xAOD EDM inherit from this simple interface class to make it simple to write generic analysis code for the objects.

Author: Andy Buckley Andy..nosp@m.Buck.nosp@m.ley@c.nosp@m.ern..nosp@m.ch; Till Eifert Till..nosp@m.Eife.nosp@m.rt@ce.nosp@m.rn.c.nosp@m.h; Markus Elsing Marku.nosp@m.s.El.nosp@m.sing@.nosp@m.cern.nosp@m..ch; Dag Gillberg Dag.G.nosp@m.illb.nosp@m.erg@c.nosp@m.ern..nosp@m.ch; Karsten Koeneke karst.nosp@m.enko.nosp@m.eneke.nosp@m.@gma.nosp@m.il.co.nosp@m.m; Attila Krasznahorkay Attil.nosp@m.a.Kr.nosp@m.aszna.nosp@m.hork.nosp@m.ay@ce.nosp@m.rn.c.nosp@m.h; Edward Moyse Edwar.nosp@m.d.Mo.nosp@m.yse@c.nosp@m.ern..nosp@m.ch

Revision: 604340

Date: 2014-07-01 06:04:52 +0200 (Tue, 01 Jul 2014)

Definition at line 41 of file Event/xAOD/xAODBase/xAODBase/IParticle.h.

Member Typedef Documentation

◆ FourMom_t

typedef TLorentzVector xAOD::IParticle::FourMom_t

Definition of the 4-momentum type.

Definition at line 69 of file Event/xAOD/xAODBase/xAODBase/IParticle.h.

Constructor & Destructor Documentation

◆ ~IParticle()

virtual xAOD::IParticle::~IParticle ( )

virtualdefault

Virtual destructor, to make vtable happy...

◆ IParticle() [1/3]

xAOD::IParticle::IParticle ( )

default

◆ IParticle() [2/3]

xAOD::IParticle::IParticle ( const IParticle & )

default

◆ IParticle() [3/3]

xAOD::IParticle::IParticle ( IParticle && )

delete

Member Function Documentation

◆ auxdata() [1/2]

template<class T>

XAOD_AUXDATA_DEPRECATED T & xAOD::IParticle::auxdata	(	const std::string &	name,
		const std::string &	clsname = "" )

inline

Fetch an aux data variable, as a non-const reference.

This function provides an easy way for users to decorate objects with auxiliary data.

Take note that this function is slow. Should not be used inside time-critical code.

Parameters

name	Name of the aux variable
clsname	The name of the associated class. May be blank

Returns: A modifiable reference to the decoration

Definition at line 98 of file Event/xAOD/xAODBase/xAODBase/IParticle.h.

                                                {
 
         return SG::Accessor< T >(name, clsname)(*this);
      }

◆ auxdata() [2/2]

template<class T>

XAOD_AUXDATA_DEPRECATED const T & xAOD::IParticle::auxdata	(	const std::string &	name,
		const std::string &	clsname = "" ) const

inline

Fetch an aux data variable, as a const reference.

This function provides an easy way for users to retrieve auxiliary decorations from an object.

Take note that this function is slow. Should not be used inside time-critical code.

Parameters

name	Name of the aux variable
clsname	The name of the associated class. May be blank

Returns: A constant reference to the decoration

Definition at line 118 of file Event/xAOD/xAODBase/xAODBase/IParticle.h.

                                                            {
        
         return SG::ConstAccessor< T >( name, clsname )( *this );
      }

◆ e()

virtual double xAOD::IParticle::e ( ) const

pure virtual

The total energy of the particle.

◆ eta()

virtual double xAOD::IParticle::eta ( ) const

pure virtual

The pseudorapidity ( \(\eta\)) of the particle.

◆ isAvailable()

template<class T>

XAOD_AUXDATA_DEPRECATED bool xAOD::IParticle::isAvailable	(	const std::string &	name,
		const std::string &	clsname = "" ) const

inline

Check if a user property is available for reading or not.

This function should be used to check if a user property which may or may not exist, is set on the object.

Parameters

name	Name of the auxiliary variable
clsname	The name of the associated class. May be blank

Returns: Whether the decoration exists or not

Definition at line 135 of file Event/xAOD/xAODBase/xAODBase/IParticle.h.

                                                            {
 
         return SG::ConstAccessor< T >(name, clsname).isAvailable(*this);
      }

◆ isAvailableWritable()

template<class T>

XAOD_AUXDATA_DEPRECATED bool xAOD::IParticle::isAvailableWritable	(	const std::string &	name,
		const std::string &	clsname = "" ) const

inline

Check if a user property is available for writing or not.

This function can be used to check whether it will be possible to set a user property on the object.

Parameters

name	Name of the auxiliary variable
clsname	The name of the associated class. May be blank

Returns: Whether the decoration is possible to set

Definition at line 152 of file Event/xAOD/xAODBase/xAODBase/IParticle.h.

                                                                    {
 
         return SG::Accessor< T >(name, clsname).isAvailableWritable(*this);
      }

◆ m()

virtual double xAOD::IParticle::m ( ) const

pure virtual

The invariant mass of the particle.

◆ operator=() [1/2]

IParticle & xAOD::IParticle::operator= ( const IParticle & )

default

◆ operator=() [2/2]

IParticle & xAOD::IParticle::operator= ( IParticle && )

delete

◆ p4()

virtual FourMom_t xAOD::IParticle::p4 ( ) const

pure virtual

The full 4-momentum of the particle.

◆ phi()

virtual double xAOD::IParticle::phi ( ) const

pure virtual

The azimuthal angle ( \(\phi\)) of the particle.

◆ pt()

virtual double xAOD::IParticle::pt ( ) const

pure virtual

The transverse momentum ( \(p_T\)) of the particle.

◆ rapidity()

virtual double xAOD::IParticle::rapidity ( ) const

pure virtual

The true rapidity (y) of the particle.

◆ type()

virtual Type::ObjectType xAOD::IParticle::type ( ) const

pure virtual

The type of the object as a simple enumeration.

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

Event/xAOD/xAODBase/xAODBase/IParticle.h

Public Member Functions

Functions describing the 4-momentum of the object

Detailed Description

Member Typedef Documentation

◆ FourMom_t

Constructor & Destructor Documentation

◆ ~IParticle()

◆ IParticle() [1/3]

◆ IParticle() [2/3]

◆ IParticle() [3/3]

Member Function Documentation

◆ auxdata() [1/2]

◆ auxdata() [2/2]

◆ e()

◆ eta()

◆ isAvailable()

◆ isAvailableWritable()

◆ m()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ p4()

◆ phi()

◆ pt()

◆ rapidity()

◆ type()