Track attachment algorithm. Calculates the seed vertex and the Tracks attached to it. More...

#include <trackattach.h>

Inheritance diagram for vertex_lcfi::TrackAttach:

Collaboration diagram for vertex_lcfi::TrackAttach:

Public Member Functions
string	name () const
	Name. More...

std::vector< string >	parameterNames () const
	Parameter Names. More...

std::vector< string >	parameterValues () const
	Parameter Values. More...

void	setStringParameter (const string &Parameter, const string &Value)
	Set String Parameter. More...

void	setDoubleParameter (const string &Parameter, const double Value)
	Set Double Parameter. More...

void	setPointerParameter (const string &Parameter, void *Value)
	Set Pointer Parameter. More...

DecayChain *	calculateFor (DecayChain *MyDecayChain) const
	Run the algorithm on a jet. More...

string	name () const
	Name. More...

std::vector< string >	parameterNames () const
	Parameter Names. More...

std::vector< string >	parameterValues () const
	Parameter Values. More...

void	setStringParameter (const string &Parameter, const string &Value)
	Set String Parameter. More...

void	setDoubleParameter (const string &Parameter, const double Value)
	Set Double Parameter. More...

void	setPointerParameter (const string &Parameter, void *Value)
	Set Pointer Parameter. More...

DecayChain *	calculateFor (DecayChain *MyDecayChain) const
	Run the algorithm on a jet. More...

Additional Inherited Members
Public Types inherited from vertex_lcfi::Algo< DecayChain , DecayChain >
typedef DecayChain *	OutType

typedef DecayChain *	OutType

typedef DecayChain *	InType

typedef DecayChain *	InType

Protected Member Functions inherited from vertex_lcfi::Algo< DecayChain , DecayChain >
void	badParameter (std::string Parameter)

void	badParameter (std::string Parameter)

Detailed Description

Track attachment algorithm. Calculates the seed vertex and the Tracks attached to it.

The algorithm firstly chooses the seed vertex, defined as the secondary vertex furthest from the IP and then decides which Tracks to attach to this vertex. This algorithm was originally devised to recover tracks from 1-prong decays that are not assigned to any ZVRES vertex, but may contribute to variables one wishes to reconstruct, such as the mass of the decaying heavy flavour particle in a jet. The algorithm returns a vertex_lcfi::DecayChain with Tracks attached to the seed vertex and all other Tracks removed. The algorithm has the following input parameters:

Parameters

AddAllTracksFromSecondary	determines whether to include or exclude inner vertices.
LoDCutmin	cut on the minimum L/D of the track to be attached to the seed vertex
LoDCutmax	cut on the maximum L/D of the track to be attached to the seed vertex
CloseapproachCut	cut on the maximum of the distance of closest approach of a Track wrt the seed axis

Author: Erik Devetak (e.dev.nosp@m.etak.nosp@m.1@phy.nosp@m.sics.nosp@m..ox.a.nosp@m.c.uk)

Definition at line 30 of file include/vertex_lcfi/algo/inc/trackattach.h.

Member Function Documentation

DecayChain * vertex_lcfi::TrackAttach::calculateFor ( DecayChain * MyDecayChain ) const

virtual

Run the algorithm on a jet.

Calculate the Seed vertex with its attached Tracks. It puts these into a Decay Chain object which is then readable to other lcfi classes. This decay chain does not hold any other Tracks but the ones in the seed vertex (including the attached tracks).

Parameters

Pointer to the DecayChain to be analysed

Returns: Pointer to DecayChain of algorithm result

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

Definition at line 93 of file trackattach.cpp.

References vertex_lcfi::DecayChain::addTrack(), vertex_lcfi::MemoryManager< T >::Event(), vertex_lcfi::DecayChain::hasTrack(), vertex_lcfi::DecayChain::jet(), vertex_lcfi::Track::makeState(), vertex_lcfi::TrackState::position(), vertex_lcfi::DecayChain::removeTrack(), vertex_lcfi::TrackState::swimToStateNearest(), vertex_lcfi::Jet::tracks(), and vertex_lcfi::DecayChain::vertices().

DecayChain* vertex_lcfi::TrackAttach::calculateFor ( DecayChain * MyDecayChain ) const

virtual

Run the algorithm on a jet.

Calculate the Seed vertex with its attached Tracks. It puts these into a Decay Chain object which is then readable to other lcfi classes. This decay chain does not hold any other Tracks but the ones in the seed vertex (including the attached tracks).

Parameters

Pointer to the DecayChain to be analysed

Returns: Pointer to DecayChain of algorithm result

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

string vertex_lcfi::TrackAttach::name ( ) const

virtual

Name.

String name of the algorithm

Returns: String name

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

string vertex_lcfi::TrackAttach::name ( ) const

virtual

Name.

String name of the algorithm

Returns: String name

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

Definition at line 37 of file trackattach.cpp.

std::vector< string > vertex_lcfi::TrackAttach::parameterNames ( ) const

virtual

Parameter Names.

A vector of the names of the algorithms parameters

Returns: vector of string names

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

Definition at line 42 of file trackattach.cpp.

std::vector<string> vertex_lcfi::TrackAttach::parameterNames ( ) const

virtual

Parameter Names.

A vector of the names of the algorithms parameters

Returns: vector of string names

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

std::vector<string> vertex_lcfi::TrackAttach::parameterValues ( ) const

virtual

Parameter Values.

A vector of the values of the algorithms parameters, in the same order as parameter names

Returns: vector of string values

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

std::vector< string > vertex_lcfi::TrackAttach::parameterValues ( ) const

virtual

Parameter Values.

A vector of the values of the algorithms parameters, in the same order as parameter names

Returns: vector of string values

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

Definition at line 47 of file trackattach.cpp.

void vertex_lcfi::TrackAttach::setDoubleParameter	(	const string &	Parameter,
		const double	Value
	)

virtual

Set Double Parameter.

Set a double parameter

Parameters

Parameter	String of parameter name
Value	double of parameter value

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

Definition at line 62 of file trackattach.cpp.

void vertex_lcfi::TrackAttach::setDoubleParameter	(	const string &	Parameter,
		const double	Value
	)

virtual

Set Double Parameter.

Set a double parameter

Parameters

Parameter	String of parameter name
Value	double of parameter value

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

void vertex_lcfi::TrackAttach::setPointerParameter	(	const string &	Parameter,
		void *	Value
	)

virtual

Set Pointer Parameter.

Set a pointer parameter

Parameters

Parameter	String of parameter name
Value	pointer to void

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

Definition at line 87 of file trackattach.cpp.

void vertex_lcfi::TrackAttach::setPointerParameter	(	const string &	Parameter,
		void *	Value
	)

virtual

Set Pointer Parameter.

Set a pointer parameter

Parameters

Parameter	String of parameter name
Value	pointer to void

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

void vertex_lcfi::TrackAttach::setStringParameter	(	const string &	Parameter,
		const string &	Value
	)

virtual

Set String Parameter.

Set a string parameter

Parameters

Parameter	String of parameter name
Value	String of parameter value

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

Definition at line 57 of file trackattach.cpp.

void vertex_lcfi::TrackAttach::setStringParameter	(	const string &	Parameter,
		const string &	Value
	)

virtual

Set String Parameter.

Set a string parameter

Parameters

Parameter	String of parameter name
Value	String of parameter value

Implements vertex_lcfi::Algo< DecayChain *, DecayChain * >.

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

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation