Implementation of the D0 Run II Cone (plugin for fastjet v2.1 upwards) More...

#include <fastjet/D0RunIIConePlugin.hh>

Inheritance diagram for fastjet::D0RunIIConePlugin:

Collaboration diagram for fastjet::D0RunIIConePlugin:

Public Member Functions
	D0RunIIConePlugin (double cone_radius_in, double min_jet_Et_in, double split_ratio_in=_DEFAULT_split_ratio)
	A D0RunIIConePlugin constructor which sets the "free" parameters of the algorithm: More...

double	cone_radius () const

double	min_jet_Et () const

double	split_ratio () const

double	far_ratio () const

double	Et_min_ratio () const

bool	kill_duplicate () const

double	duplicate_dR () const

double	duplicate_dPT () const

double	search_factor () const

double	pT_min_leading_protojet () const

double	pT_min_second_protojet () const

int	merge_max () const

double	pT_min_nomerge () const

double	overlap_threshold () const
	access the split_ratio() also by the name overlap_threshold()

virtual std::string	description () const
	return a textual description of the jet-definition implemented in this plugin

virtual void	run_clustering (ClusterSequence &) const
	given a ClusterSequence that has been filled up with initial particles, the following function should fill up the rest of the ClusterSequence, using the following member functions of ClusterSequence: More...

virtual double	R () const
	the plugin mechanism's standard way of accessing the jet radius

Public Member Functions inherited from fastjet::JetDefinition::Plugin
virtual bool	supports_ghosted_passive_areas () const
	return true if there is specific support for the measurement of passive areas, in the sense that areas determined from all particles below the ghost separation scale will be a passive area. More...

virtual void	set_ghost_separation_scale (double scale) const
	set the ghost separation scale for passive area determinations in future runs (strictly speaking that makes the routine a non const, so related internal info must be stored as a mutable)

virtual double	ghost_separation_scale () const

virtual bool	exclusive_sequence_meaningful () const
	if this returns false then a warning will be given whenever the user requests "exclusive" jets from the cluster sequence

virtual bool	is_spherical () const
	returns true if the plugin implements an algorithm intended for use on a spherical geometry (e.g. More...

virtual	~Plugin ()
	a destructor to be replaced if necessary in derived classes...

Detailed Description

Implementation of the D0 Run II Cone (plugin for fastjet v2.1 upwards)

D0RunIIConePlugin is a plugin for fastjet (v2.1 upwards) that provides an interface to the D0 version of Run-II iterative cone algorithm with midpoint seeds (also known as the Iterative Legacy Cone Algorithm, ILCA).

The D0 code has been taken from Lars Sonnenschein's web-space http://www-d0.fnal.gov/~sonne/D0RunIIcone.tgz

The version of the D0 Run II code distributed here has been modified by the FastJet authors, so as to provide access to the contents of the jets (as is necessary for the plugin). This does not modify the results of the clustering.

Definition at line 60 of file D0RunIIConePlugin.hh.

Constructor & Destructor Documentation

fastjet::D0RunIIConePlugin::D0RunIIConePlugin	(	double	cone_radius_in,
		double	min_jet_Et_in,
		double	split_ratio_in = `_DEFAULT_split_ratio`
	)

inline

A D0RunIIConePlugin constructor which sets the "free" parameters of the algorithm:

the cone_radius has the usual meaning
the min_jet_Et causes cones to be discarded at if at any iteration they have pt < Et_min_ratio * min_jet_Et. Two values have been used by D0 for min_jet_Et: 8 GeV in earlier Run II publicatinos, 6 GeV in later publications
split_ratio is equivalent to the overlap threshold during the split/merge step. Default: 0.5.

The remaining parameters of the algorithm are not to be modified if the algorithm is to correspond to the one actually used by D0.

Definition at line 80 of file D0RunIIConePlugin.hh.

Member Function Documentation

void fastjet::D0RunIIConePlugin::run_clustering ( ClusterSequence & ) const

virtual

given a ClusterSequence that has been filled up with initial particles, the following function should fill up the rest of the ClusterSequence, using the following member functions of ClusterSequence:

plugin_do_ij_recombination(...)
plugin_do_iB_recombination(...)

Implements fastjet::JetDefinition::Plugin.

Definition at line 72 of file D0RunIIConePlugin.cc.

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

plugins/D0RunIICone/fastjet/D0RunIIConePlugin.hh
plugins/D0RunIICone/D0RunIIConePlugin.cc

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation