DC7_2 Class Reference

A class for the \(\Delta C_7^2\) correction in \(M \to V \gamma\) decay. More...

#include <MVgamma.h>

Inheritance diagram for DC7_2:

Collaboration diagram for DC7_2:

Detailed Description

A class for the \(\Delta C_7^2\) 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:

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

Definition at line 268 of file MVgamma.h.

Public Member Functions
double	computeThValue ()
	The \(\Delta C_7^2\) in \(M \to V \gamma\). More...
	DC7_2 (const StandardModel &SM_i, StandardModel::meson meson_i, StandardModel::meson vector_i)
	Constructor. More...
Public Member Functions inherited from MVgamma
gslpp::complex	G1 (double s)
	Correction in eq. (42) of [43]. More...
gslpp::complex	G8 ()
	Correction in eq. (42) of [43]. More...
gslpp::complex	H1 (double s)
	Correction in eq. (42) of [43]. More...
gslpp::complex	H8 ()
	Correction in eq. (42) of [43]. More...
gslpp::complex	H_V_m ()
	The helicity amplitude \( H_V^- \). More...
gslpp::complex	H_V_m_bar ()
	The helicity amplitude \( \bar{H}_V^- \). More...
gslpp::complex	H_V_p ()
	The helicity amplitude \( H_V^+ \). More...
gslpp::complex	H_V_p_bar ()
	The helicity amplitude \( \bar{H}_V^+ \). More...
	MVgamma (const StandardModel &SM_i, StandardModel::meson meson_i, StandardModel::meson vector_i)
	Constructor. More...
double	T_1 ()
	The transverse form factor \( T_1 \). More...
void	updateParameters ()
	The update parameter method for MVgamma. More...
virtual	~MVgamma ()
	Destructor. More...
Public Member Functions inherited from ThObservable
double	getBinMax ()
	A get method to get the maximum value of the bin. More...
double	getBinMin ()
	A get method to get the minimum value of the bin. More...
const StandardModel &	getModel ()
	A get method to get the model. More...
void	setBinMax (double max)
	A set method to set the maximum value of the bin. More...
void	setBinMin (double min)
	A set method to set the minimum value of the bin. More...
	ThObservable (const StandardModel &SM_i)
	Constructor. More...
	ThObservable (const ThObservable &orig)
	The copy constructor. More...
virtual	~ThObservable ()
	The default destructor. More...

Private Attributes
StandardModel::meson	meson
StandardModel::meson	vectorM

Additional Inherited Members
Public Attributes inherited from MVgamma
double	a_0T1
double	a_1T1
double	a_2T1
double	ale
gslpp::vector< gslpp::complex > **	allcoeff
gslpp::vector< gslpp::complex > **	allcoeffh
gslpp::vector< gslpp::complex > **	allcoeffprime
gslpp::complex	C_2
gslpp::complex	C_2h
gslpp::complex	C_7
gslpp::complex	C_7p
gslpp::complex	C_8
gslpp::complex	C_8h
double	GF
gslpp::complex	h [2]
double	lambda
gslpp::complex	lambda_t
double	Mb
double	Mc
double	MM
double	MM2
double	MRT1_2
double	Ms
double	mu_b
double	mu_h
double	MV
double	MW
double	width
Protected Attributes inherited from ThObservable
double	max
	the bin maximum. More...
double	min
	The bin minimum. More...
const StandardModel &	SM
	A reference to an object of StandardMode class. More...

Constructor & Destructor Documentation

DC7_2::DC7_2	(	const StandardModel &	SM_i,
		StandardModel::meson	meson_i,
		StandardModel::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 200 of file MVgamma.cpp.

: MVgamma(SM_i, meson_i, vector_i)
{
    meson = meson_i;
    vectorM = vector_i;
}

Member Function Documentation

double DC7_2::computeThValue ( )

virtual

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

Returns

\(\Delta C_7^2\)

Implements ThObservable.

Definition at line 207 of file MVgamma.cpp.

{
    updateParameters();
    return ( (8. * M_PI * M_PI * MM2 * MM) / (lambda * Mb * T_1())*(h[1] + h[0])).abs();
}

Member Data Documentation

StandardModel::meson DC7_2::meson

private

Initial meson type.

Definition at line 286 of file MVgamma.h.

StandardModel::meson DC7_2::vectorM

private

Final vector meson type.

Definition at line 287 of file MVgamma.h.

---

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

• MVgamma.h
• MVgamma.cpp