hitfit::FE_Obj Class Reference

Represent a single object in a Fourvec_Event, this is just a dumb data container. Each object in a Fourvec_Event has the following attributes: More...

#include <Fourvec_Event.h>

List of all members.

Public Member Functions
	FE_Obj (Fourvec the_p, double the_mass, int the_label, double the_p_error, double the_phi_error, double the_eta_error, bool the_muon_p)
	Constructor.
Public Attributes
double	eta_error
int	label
double	mass
bool	muon_p
Fourvec	p
double	p_error
double	phi_error

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Detailed Description

Represent a single object in a Fourvec_Event, this is just a dumb data container. Each object in a Fourvec_Event has the following attributes:

• Four-momenta.
• Mass. The kinematic fit assumes a fixed mass for each object, this is specified by the mass attribute.
• Uncertainty in momentum .
• Uncertainty in azimuthal angle .
• Uncertainty in pseudorapidity .
• Muon/inverse momentum flag. If the flag is set to true, then the uncertainty is interpreted as uncertainty in instead of .
• Label, an integer label that can be used to identify the object type: e.g. lepton, b-jet from hadronic top, etc.

Definition at line 95 of file Fourvec_Event.h.

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Constructor & Destructor Documentation

hitfit::FE_Obj::FE_Obj	(	Fourvec	the_p,
		double	the_mass,
		int	the_label,
		double	the_p_error,
		double	the_phi_error,
		double	the_eta_error,
		bool	the_muon_p
	)

Constructor.

Parameters:

the_p	The four-momentum.
the_mass	The mass of the object.
the_label	An integer label to identify the object type.
the_p_error	Uncertainty in momentum or if the muon flag is set to TRUE.
the_phi_error	Uncertainty in azimuthal angle .
the_eta_error	Uncertainty in pseudorapidity .
the_muon_p	Muon/inverse momentum flag.

Definition at line 49 of file Fourvec_Event.cc.

  : p (the_p),
    mass (the_mass),
    label (the_label),
    p_error (the_p_error),
    phi_error (the_phi_error),
    eta_error (the_eta_error),
    muon_p (the_muon_p)
{
}

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Member Data Documentation

double hitfit::FE_Obj::eta_error

Uncertainty in pseudorapidity .

Definition at line 135 of file Fourvec_Event.h.

Referenced by hitfit::operator<<().

int hitfit::FE_Obj::label

An integer label to identify the object type.

Definition at line 119 of file Fourvec_Event.h.

Referenced by hitfit::Fourvec_Event::add(), hitfit::operator<<(), hitfit::Pair_Table::Pair_Table(), and hitfit::Constraint_Intermed_Labels::sum_mass_terms().

double hitfit::FE_Obj::mass

The mass of the object. The kinematic fitting algorithm will fix the mass to this.

Definition at line 113 of file Fourvec_Event.h.

Referenced by hitfit::operator<<(), and hitfit::Constraint_Intermed_Labels::sum_mass_terms().

bool hitfit::FE_Obj::muon_p

Muon/inverse momentum flag. If the flag is set to TRUE, then the uncertainty is interpreted as uncertainty in instead of .

Definition at line 144 of file Fourvec_Event.h.

Referenced by hitfit::Fourvec_Constraint_Calculator::calculate_constraints(), and hitfit::operator<<().

Fourvec hitfit::FE_Obj::p

The four-momentum of the object.

Definition at line 105 of file Fourvec_Event.h.

Referenced by hitfit::Fourvec_Event::add(), hitfit::Fourvec_Constraint_Calculator::calculate_constraints(), and hitfit::operator<<().

double hitfit::FE_Obj::p_error

Uncertainty in momentum .

Definition at line 125 of file Fourvec_Event.h.

Referenced by hitfit::operator<<().

double hitfit::FE_Obj::phi_error

Uncertainty in azimuthal angle .

Definition at line 130 of file Fourvec_Event.h.

Referenced by hitfit::operator<<().