A class for mesons. More...

#include <Meson.h>

Inheritance diagram for Meson:

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Collaboration diagram for Meson:

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Detailed Description

A class for mesons.

Author: HEPfit Collaboration

Copyright: GNU General Public License

This class is used to define a meson and three of its characteristics: mass, lifetime and decay constant. This class inherits the public access members of the Particle class.

Definition at line 26 of file Meson.h.

Public Member Functions
double	computeWidth () const
	A method to compute the width of the meson from its lifetime. More...

const double &	getDecayconst () const
	A get method for the decay constant of the meson. More...

const double &	getDgamma_gamma () const

const double &	getGegenalpha (int i) const

const double &	getLambdaM () const

double	getLifetime () const
	A get method for the lifetime of the meson. More...

	Meson ()
	The default constructor. More...

	Meson (double mass, double lifetime, double decayconst, double lambdaM, double gegenalpha1, double gegenalpha2)
	Constructor. More...

void	setDecayconst (double decayconst)
	A set method for the decay constant of the meson. More...

void	setDgamma_gamma (double Dgamma_gamma)

void	setGegenalpha (int i, double gegenalpha)

void	setLambdaM (double lambdaM)

void	setLifetime (double lifetime)
	A set method for the decay constant of the meson. More...

virtual	~Meson ()
	The default destructor. More...

Public Member Functions inherited from Particle
double	getCharge () const
	A get method to access the particle charge. More...

int	getIndex () const

double	getIsospin () const
	A get method to access the particle isospin. More...

const double &	getMass () const
	A get method to access the particle mass. More...

double	getMass_scale () const
	A get method to access the scale at which the particle mass is defined. More...

std::string	getName () const

const double &	getWidth () const
	A get method to access the particle width. More...

bool	is (std::string name_i) const

	Particle ()
	The default constructor. More...

	Particle (std::string name, double mass, double mass_scale=0., double width=0., double charge=0., double isospin=0.)
	Constructor. More...

void	setCharge (double charge)
	A set method to fix the particle charge. More...

void	setIsospin (double isospin)
	A set method to fix the particle isospin. More...

void	setMass (double mass)
	A set method to fix the particle mass. More...

void	setMass_scale (double mass_scale)
	A set method to fix the scale at which the particle mass is defined. More...

void	setName (std::string name)

void	setWidth (double width)
	A set method to fix the particle width. More...

virtual	~Particle ()

Private Attributes
double	decayconst
	The decay constant of the meson. More...

double	Dgamma_gamma
	Dgamma/gamma for neutral mesons. More...

double	gegenalpha [2]
	Gegenbauer moments. More...

double	lambdaM
	First moment of LCDA. More...

double	lifetime
	The lifetime of the meson. More...

Additional Inherited Members
Protected Member Functions inherited from Particle
void	setIndex ()

Protected Attributes inherited from Particle
double	charge
	The particle charge. More...

int	index
	The index of the particle. More...

double	isospin
	The particle isospin. More...

double	mass
	The particle mass in GeV. More...

double	mass_scale
	The scale in GeV at which the particle mass is defined. More...

std::string	name
	The particle name. More...

double	width
	The particle width in GeV. More...

Constructor & Destructor Documentation

Meson::Meson ( )

inline

The default constructor.

Definition at line 32 of file Meson.h.

33 {

34 };

Meson::Meson	(	double	mass,
		double	lifetime = `5.e29`,
		double	decayconst = `0.`,
		double	lambdaM = `0.`,
		double	gegenalpha1 = `0.`,
		double	gegenalpha2 = `0.`
	)

Constructor.

Parameters

[in]	mass	the mass of the meson in GeV
[in]	lifetime	the lifetime of the meson in \( \mathrm{ps}^{-1} \)
[in]	decayconst	the decay constant of the meson in GeV
[in]	lambdaM	the first moment of the LCDA
[in]	gegenalpha1	first Gegenbauer moment of LCDA
[in]	gegenalpha2	second Gegenbauer moment of LCDA

Definition at line 10 of file Meson.cpp.

 {
     this->mass = mass;
     this->lifetime = lifetime;
     this->decayconst = decayconst;
     this->lambdaM = lambdaM;
     gegenalpha[0] = gegenalpha1;
     gegenalpha[1] = gegenalpha2;
 }

Meson::~Meson ( )

virtual

The default destructor.

Definition at line 21 of file Meson.cpp.

22 {

23 }

Member Function Documentation

double Meson::computeWidth ( ) const

A method to compute the width of the meson from its lifetime.

Returns: the width of the meson in GeV

Definition at line 25 of file Meson.cpp.

 {
     return (HCUT / lifetime);
 }

const double& Meson::getDecayconst ( ) const

inline

A get method for the decay constant of the meson.

Returns: the decay constant of the meson in GeV

Definition at line 74 of file Meson.h.

     {
         return decayconst;
     }

const double& Meson::getDgamma_gamma ( ) const

inline

Definition at line 124 of file Meson.h.

     {
         return Dgamma_gamma;
     }

const double& Meson::getGegenalpha ( int i ) const

inline

Definition at line 94 of file Meson.h.

     {
         if (i >= 0 && i < 2)
             return gegenalpha[i];
         else 
             throw std::runtime_error("Meson::getGegenalpha(" + boost::lexical_cast<std::string>(i) + "): index out of range");
     }

const double& Meson::getLambdaM ( ) const

inline

Definition at line 110 of file Meson.h.

     {
         return lambdaM;
     }

double Meson::getLifetime ( ) const

inline

A get method for the lifetime of the meson.

Returns: the lifetime of the meson in \( \mathrm{ps}^{-1} \)

Definition at line 56 of file Meson.h.

     {
         return lifetime;
     }

void Meson::setDecayconst ( double decayconst )

inline

A set method for the decay constant of the meson.

Parameters

[in] decayconst the decay constant of the meson in GeV

Definition at line 83 of file Meson.h.

     {
         this->decayconst = decayconst;
     }

void Meson::setDgamma_gamma ( double Dgamma_gamma )

inline

Definition at line 120 of file Meson.h.

                                              {
         this->Dgamma_gamma = Dgamma_gamma;
     }

void Meson::setGegenalpha	(	int	i,
		double	gegenalpha
	)

inline

Definition at line 102 of file Meson.h.

     {
         if (i >= 0 && i < 2)
             this->gegenalpha[i] = gegenalpha;
         else
             throw std::runtime_error("Meson::setGegenalpha(" + boost::lexical_cast<std::string>(i) + ", double gegenalpha): index out of range");
     }

void Meson::setLambdaM ( double lambdaM )

inline

Definition at line 115 of file Meson.h.

     {
         this->lambdaM = lambdaM;
     }

void Meson::setLifetime ( double lifetime )

inline

A set method for the decay constant of the meson.

Parameters

[in] lifetime the lifetime of the meson in \( \mathrm{ps}^{-1} \)

Definition at line 65 of file Meson.h.

     {
         this->lifetime = lifetime;
     }

Member Data Documentation

double Meson::decayconst

private

The decay constant of the meson.

Definition at line 130 of file Meson.h.

double Meson::Dgamma_gamma

private

Dgamma/gamma for neutral mesons.

Definition at line 134 of file Meson.h.

double Meson::gegenalpha[2]

private

Gegenbauer moments.

Definition at line 132 of file Meson.h.

double Meson::lambdaM

private

First moment of LCDA.

Definition at line 133 of file Meson.h.

double Meson::lifetime

private

The lifetime of the meson.

Definition at line 131 of file Meson.h.

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

Detailed Description

Public Member Functions

Private Attributes

Additional Inherited Members

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation