A plugin for FastJet (v3.0 or later) that provides an interface to the D0 version of Run-I cone algorithm. More...

#include <fastjet/D0RunIConePlugin.hh>

Inheritance diagram for fastjet::D0RunIConePlugin:

Collaboration diagram for fastjet::D0RunIConePlugin:

Public Member Functions
	D0RunIConePlugin (double CONErad_in, double JETmne_in, double SPLifr_in=_DEFAULT_SPLifr)
	The D0RunIConePlugin constructor, which sets the "free" parameters of the algorithm: More...

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...

Public Member Functions inherited from fastjet::D0RunIBaseConePlugin
	D0RunIBaseConePlugin (double CONErad_in, double JETmne_in, double SPLifr_in=_DEFAULT_SPLifr)
	A D0RunIConePlugin constructor which sets the "free" parameters of the algorithm: More...

double	CONErad () const

double	JETmne () const

double	SPLifr () const

double	TWOrad () const

bool	D0_Angle () const

bool	Increase_Delta_R () const

bool	Kill_Far_Clusters () const

bool	Jet_Et_Min_On_Iter () const

double	Far_Ratio () const

double	Eitem_Negdrop () const

double	Et_Min_Ratio () const

double	Thresh_Diff_Et () const

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

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...

Additional Inherited Members
Protected Member Functions inherited from fastjet::D0RunIBaseConePlugin
template<typename HepEntityType >
void	run_clustering_worker (ClusterSequence &) const

Protected Attributes inherited from fastjet::D0RunIBaseConePlugin
double	_CONErad

double	_JETmne

double	_SPLifr

double	_TWOrad

bool	_D0_Angle

bool	_Increase_Delta_R

bool	_Kill_Far_Clusters

bool	_Jet_Et_Min_On_Iter

double	_Far_Ratio

double	_Eitem_Negdrop

double	_Et_Min_Ratio

double	_Thresh_Diff_Et

Static Protected Attributes inherited from fastjet::D0RunIBaseConePlugin
static const double	_DEFAULT_SPLifr = 0.5

static const double	_DEFAULT_TWOrad = 0.

static const bool	_DEFAULT_D0_Angle = false

static const bool	_DEFAULT_Increase_Delta_R = true

static const bool	_DEFAULT_Kill_Far_Clusters = true

static const bool	_DEFAULT_Jet_Et_Min_On_Iter = true

static const double	_DEFAULT_Far_Ratio = 0.5

static const double	_DEFAULT_Eitem_Negdrop = -1.0

static const double	_DEFAULT_Et_Min_Ratio = 0.5

static const double	_DEFAULT_Thresh_Diff_Et = 0.01

Detailed Description

A plugin for FastJet (v3.0 or later) that provides an interface to the D0 version of Run-I cone algorithm.

The D0 code has been obtained from Lars Sonnenschein's web-space http://www-d0.fnal.gov/~sonne/D0RunIcone.tgz

The version of the D0 Run I 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.

The difference between this algorithm and the post-1996 version relates to the way the final jet momenta are calculated. Details are to be found in FERMILAB-PUB-97-242-E.

Definition at line 62 of file D0RunIConePlugin.hh.

Constructor & Destructor Documentation

fastjet::D0RunIConePlugin::D0RunIConePlugin	(	double	CONErad_in,
		double	JETmne_in,
		double	SPLifr_in = `_DEFAULT_SPLifr`
	)

inline

The D0RunIConePlugin constructor, which sets the "free" parameters of the algorithm:

Parameters

CONErad	is the cone radius
JETmne	is a minimum ET requirement on every iteration (jet dropped if Et < JETmne * Et_min_ratio ). The value that has been used by D0 for JETmne: 8 GeV (and Et_min_ratio is 0.5)
SPlifr	is the shared Et fraction splitting threshold, and a value of 0.5 was usually used by D0

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 D0RunIConePlugin.hh.

Member Function Documentation

void fastjet::D0RunIConePlugin::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::D0RunIBaseConePlugin.

Definition at line 215 of file D0RunIBaseConePlugin.cc.

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

plugins/D0RunICone/fastjet/D0RunIConePlugin.hh
plugins/D0RunICone/D0RunIBaseConePlugin.cc

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation