fastjet::D0RunIIConePlugin Class Reference

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:

List of all members.

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

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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 58 of file D0RunIIConePlugin.hh.

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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 78 of file D0RunIIConePlugin.hh.

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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 70 of file D0RunIIConePlugin.cc.

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

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