Detailed Description

A class for the \(\Delta C_7^R\) correction in \(M \to V \gamma\) decay.

Author: HEPfit Collaboration

Copyright: GNU General Public License

This class is used to compute the \(\Delta C_7^2\) in \(M \to V \gamma\) due to the hadronic parameters \(h_{+,-}\), computed in the MVgamma class:

\[ \Delta C_7^R = \frac {8 \pi^2 M_M^3}{\lambda m_b T_1(0)}|h_+| \,. \]

Definition at line 1203 of file MVgamma.h.

Public Member Functions
	AbsDC7_QCDF_bar (const StandardModel &SM_i, QCD::meson meson_i, QCD::meson vector_i)
	Constructor.

double	computeThValue ()
	The \(\Delta C_7^2\) in \(M \to V \gamma\).

Public Member Functions inherited from ThObservable
double	getBinMax ()
	A get method to get the maximum value of the bin.

double	getBinMin ()
	A get method to get the minimum value of the bin.

const StandardModel &	getModel ()
	A get method to get the model.

const std::vector< std::string >	getParametersForObservable ()
	A get method to get the parameters for the specific observable.

void	setBinMax (double max)
	A set method to set the maximum value of the bin.

void	setBinMin (double min)
	A set method to set the minimum value of the bin.

void	setParametersForObservable (std::vector< std::string > parametersForObservable_i)
	A set method to get the parameters for the specific observable.

	ThObservable (const StandardModel &SM_i)
	Constructor.

	ThObservable (const ThObservable &orig)
	The copy constructor.

virtual	~ThObservable ()
	The default destructor.

Private Attributes
QCD::meson	meson

QCD::meson	vectorM

Additional Inherited Members
Protected Attributes inherited from ThObservable
double	max
	the bin maximum.

double	min
	The bin minimum.

std::vector< std::string >	parametersForObservable
	a vector of parameter namesfor the specific observable

const StandardModel &	SM
	A reference to an object of StandardMode class.

Constructor & Destructor Documentation

◆ AbsDC7_QCDF_bar()

AbsDC7_QCDF_bar::AbsDC7_QCDF_bar	(	const StandardModel &	SM_i,
		QCD::meson	meson_i,
		QCD::meson	vector_i
	)

Constructor.

Parameters

[in]	SM_i	a reference to an object of type StandardModel
[in]	meson_i	initial meson of the decay
[in]	vector_i	final vector meson of the decay

Definition at line 1241 of file MVgamma.cpp.

: ThObservable(SM_i)
{
    meson = meson_i;
    vectorM = vector_i;
    
    setParametersForObservable(SM.getFlavour().getMVgamma(meson, vectorM).initializeMVgammaParameters());
}

Member Function Documentation

◆ computeThValue()

double AbsDC7_QCDF_bar::computeThValue ( )

virtual

The \(\Delta C_7^2\) in \(M \to V \gamma\).

Returns: \(\Delta C_7^2\)

Implements ThObservable.

Definition at line 1250 of file MVgamma.cpp.

{
    SM.getFlavour().getMVgamma(meson, vectorM).updateParameters();
    
    double MM = SM.getMesons(meson).getMass();
    double MM2 = MM * MM;
    double MV = SM.getMesons(vectorM).getMass();
    double T1 = SM.getFlavour().getMVgamma(meson, vectorM).T_1();
    
    return ( SM.getFlavour().getMVgamma(meson, vectorM).DC7_QCDF_bar + MM2/(MM2 - MV*MV) * SM.getFlavour().getMVgamma(meson, vectorM).T_QCDF_minus(true)/T1 ).abs();
}

Member Data Documentation

◆ meson

QCD::meson AbsDC7_QCDF_bar::meson

private

Initial meson type.

Definition at line 1221 of file MVgamma.h.

◆ vectorM

QCD::meson AbsDC7_QCDF_bar::vectorM

private

Final vector meson type.

Definition at line 1222 of file MVgamma.h.

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