An event with clustered jets. More...

#include <Event.hh>

Classes
class	EventData
	Class to store general Event setup, i.e. Phase space and weights. More...

Public Types
using	ConstPartonIterator = boost::filter_iterator< bool(*)(Particle const &), std::vector< Particle >::const_iterator >
	Iterator over partons. More...

using	ConstReversePartonIterator = std::reverse_iterator< ConstPartonIterator >
	Reverse Iterator over partons. More...

Public Member Functions
	Event ()=delete
	No default Constructor. More...

std::vector< int >	particle_jet_indices (std::vector< fastjet::PseudoJet > const &jets) const
	Indices of the jets the outgoing partons belong to. More...

std::vector< int >	particle_jet_indices () const
	particle_jet_indices() of the Event jets() More...

fastjet::JetDefinition const &	jet_def () const
	Jet definition used for clustering. More...

double	min_jet_pt () const
	Minimum jet transverse momentum. More...

event_type::EventType	type () const
	Event type. More...

bool	generate_colours (RNG &)
	Give colours to each particle. More...

bool	is_leading_colour () const
	Check that current colours are leading in the high energy limit. More...

bool	valid_hej_state (double soft_pt_regulator=DEFAULT_SOFT_PT_REGULATOR) const
	Check if given event could have been produced by HEJ. More...

bool	valid_incoming () const
	Check that the incoming momenta are valid. More...

Particle Access
std::array< Particle, 2 > const &	incoming () const
	Incoming particles. More...

std::vector< Particle > const &	outgoing () const
	Outgoing particles. More...

ConstPartonIterator	begin_partons () const
	Iterator to the first outgoing parton. More...

ConstPartonIterator	cbegin_partons () const
	Iterator to the first outgoing parton. More...

ConstPartonIterator	end_partons () const
	Iterator to the end of the outgoing partons. More...

ConstPartonIterator	cend_partons () const
	Iterator to the end of the outgoing partons. More...

ConstReversePartonIterator	rbegin_partons () const
	Reverse Iterator to the first outgoing parton. More...

ConstReversePartonIterator	crbegin_partons () const
	Reverse Iterator to the first outgoing parton. More...

ConstReversePartonIterator	rend_partons () const
	Reverse Iterator to the first outgoing parton. More...

ConstReversePartonIterator	crend_partons () const
	Reverse Iterator to the first outgoing parton. More...

std::unordered_map< std::size_t, std::vector< Particle > > const &	decays () const
	Particle decays. More...

std::vector< fastjet::PseudoJet > const &	jets () const
	The jets formed by the outgoing partons, sorted in rapidity. More...

Weight variations
Parameters< EventParameters > const &	parameters () const
	All chosen parameter, i.e. scale choices (const version) More...

Parameters< EventParameters > &	parameters ()
	All chosen parameter, i.e. scale choices. More...

EventParameters const &	central () const
	Central parameter choice (const version) More...

EventParameters &	central ()
	Central parameter choice. More...

std::vector< EventParameters > const &	variations () const
	Parameter (scale) variations (const version) More...

std::vector< EventParameters > &	variations ()
	Parameter (scale) variations. More...

EventParameters const &	variations (std::size_t i) const
	Parameter (scale) variation (const version) More...

EventParameters &	variations (std::size_t i)
	Parameter (scale) variation. More...

Detailed Description

An event with clustered jets.

This is the main HEJ 2 event class. It contains kinematic information including jet clustering, parameter (e.g. scale) settings and the event weight.

Member Typedef Documentation

◆ ConstPartonIterator

using HEJ::Event::ConstPartonIterator = boost::filter_iterator< bool (*)(Particle const &), std::vector<Particle>::const_iterator >

Iterator over partons.

◆ ConstReversePartonIterator

using HEJ::Event::ConstReversePartonIterator = std::reverse_iterator< ConstPartonIterator>

Reverse Iterator over partons.

Constructor & Destructor Documentation

◆ Event()

HEJ::Event::Event ( )

delete

No default Constructor.

Member Function Documentation

◆ begin_partons()

ConstPartonIterator HEJ::Event::begin_partons ( ) const

Iterator to the first outgoing parton.

◆ cbegin_partons()

ConstPartonIterator HEJ::Event::cbegin_partons ( ) const

Iterator to the first outgoing parton.

◆ cend_partons()

ConstPartonIterator HEJ::Event::cend_partons ( ) const

Iterator to the end of the outgoing partons.

◆ central() [1/2]

EventParameters & HEJ::Event::central ( )

inline

Central parameter choice.

◆ central() [2/2]

EventParameters const & HEJ::Event::central ( ) const

inline

Central parameter choice (const version)

◆ crbegin_partons()

ConstReversePartonIterator HEJ::Event::crbegin_partons ( ) const

Reverse Iterator to the first outgoing parton.

◆ crend_partons()

ConstReversePartonIterator HEJ::Event::crend_partons ( ) const

Reverse Iterator to the first outgoing parton.

◆ decays()

std::unordered_map< std::size_t, std::vector< Particle > > const & HEJ::Event::decays ( ) const

inline

Particle decays.

The key in the returned map corresponds to the index in the vector returned by outgoing()

◆ end_partons()

ConstPartonIterator HEJ::Event::end_partons ( ) const

Iterator to the end of the outgoing partons.

◆ generate_colours()

bool HEJ::Event::generate_colours ( RNG & )

Give colours to each particle.

Returns: true if new colours are generated, i.e. same as is_resummable()

Colour ordering is done according to leading colour in the MRK limit, see [2]. This only affects HEJ configurations, all other EventTypes will be ignored.

Note: This overwrites all previously set colours.

◆ incoming()

std::array< Particle, 2 > const & HEJ::Event::incoming ( ) const

inline

Incoming particles.

◆ is_leading_colour()

bool HEJ::Event::is_leading_colour ( ) const

Check that current colours are leading in the high energy limit.

Checks that the colour configuration can be split up in multiple, rapidity ordered, non-overlapping ladders. Such configurations are leading in the MRK limit, see [2]

Note: This is not to be confused with is_resummable(), however for all resummable states it is possible to create a leading colour configuration, see generate_colours()

◆ jet_def()

fastjet::JetDefinition const & HEJ::Event::jet_def ( ) const

inline

Jet definition used for clustering.

◆ jets()

std::vector< fastjet::PseudoJet > const & HEJ::Event::jets ( ) const

inline

The jets formed by the outgoing partons, sorted in rapidity.

◆ min_jet_pt()

double HEJ::Event::min_jet_pt ( ) const

inline

Minimum jet transverse momentum.

◆ outgoing()

std::vector< Particle > const & HEJ::Event::outgoing ( ) const

inline

Outgoing particles.

◆ parameters() [1/2]

Parameters< EventParameters > & HEJ::Event::parameters ( )

inline

All chosen parameter, i.e. scale choices.

◆ parameters() [2/2]

Parameters< EventParameters > const & HEJ::Event::parameters ( ) const

inline

All chosen parameter, i.e. scale choices (const version)

◆ particle_jet_indices() [1/2]

std::vector< int > HEJ::Event::particle_jet_indices ( ) const

inline

particle_jet_indices() of the Event jets()

◆ particle_jet_indices() [2/2]

std::vector< int > HEJ::Event::particle_jet_indices ( std::vector< fastjet::PseudoJet > const & jets ) const

inline

Indices of the jets the outgoing partons belong to.

Parameters

jets	Jets to be tested

Returns: A vector containing, for each outgoing parton, the index in the vector of jets the considered parton belongs to. If the parton is not inside any of the passed jets, the corresponding index is set to -1.

◆ rbegin_partons()

ConstReversePartonIterator HEJ::Event::rbegin_partons ( ) const

Reverse Iterator to the first outgoing parton.

◆ rend_partons()

ConstReversePartonIterator HEJ::Event::rend_partons ( ) const

Reverse Iterator to the first outgoing parton.

◆ type()

event_type::EventType HEJ::Event::type ( ) const

inline

Event type.

◆ valid_hej_state()

bool HEJ::Event::valid_hej_state ( double soft_pt_regulator = DEFAULT_SOFT_PT_REGULATOR ) const

Check if given event could have been produced by HEJ.

A HEJ state has to fulfil:

type() has to be resummable
Soft radiation in the tagging jets contributes at most to soft_pt_regulator of the total jet \( p_\perp \)
Partons related to subleading configurations (uno gluon, qqbar) must be in separate jets.

Note: This is true for any resummed stated produced by the EventReweighter or any resummable Leading Order state.

Parameters

soft_pt_regulator Maximum transverse momentum fraction from soft radiation in tagging jets

Returns: True if this state could have been produced by HEJ

◆ valid_incoming()

bool HEJ::Event::valid_incoming ( ) const

Check that the incoming momenta are valid.

Checks that the incoming parton momenta are on-shell and have vanishing transverse components.

◆ variations() [1/4]

std::vector< EventParameters > & HEJ::Event::variations ( )

inline

Parameter (scale) variations.

◆ variations() [2/4]

std::vector< EventParameters > const & HEJ::Event::variations ( ) const

inline

Parameter (scale) variations (const version)

◆ variations() [3/4]

EventParameters & HEJ::Event::variations ( std::size_t i )

inline

Parameter (scale) variation.

Parameters

i	Index of the requested variation

◆ variations() [4/4]

EventParameters const & HEJ::Event::variations ( std::size_t i ) const

inline

Parameter (scale) variation (const version)

Parameters

i	Index of the requested variation

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

/home/andersen/HEJProjects/website/build/hej/include/HEJ/Event.hh

Classes

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ ConstPartonIterator

◆ ConstReversePartonIterator

Constructor & Destructor Documentation

◆ Event()

Member Function Documentation

◆ begin_partons()

◆ cbegin_partons()

◆ cend_partons()

◆ central() [1/2]

◆ central() [2/2]

◆ crbegin_partons()

◆ crend_partons()

◆ decays()

◆ end_partons()

◆ generate_colours()

◆ incoming()

◆ is_leading_colour()

◆ jet_def()

◆ jets()

◆ min_jet_pt()

◆ outgoing()

◆ parameters() [1/2]

◆ parameters() [2/2]

◆ particle_jet_indices() [1/2]

◆ particle_jet_indices() [2/2]

◆ rbegin_partons()

◆ rend_partons()

◆ type()

◆ valid_hej_state()

◆ valid_incoming()

◆ variations() [1/4]

◆ variations() [2/4]

◆ variations() [3/4]

◆ variations() [4/4]