GammaPrimef Class Reference

A class for the observable \(\Gamma'\) in \(M \to V l^+l^-\). More...

#include <MVllObservables.h>

Inheritance diagram for GammaPrimef:

Detailed Description

A class for the observable \(\Gamma'\) in \(M \to V l^+l^-\).

Author

HEPfit Collaboration

Copyright

GNU General Public License

This class is used to compute the observable \(\Gamma'\) in \(M \to V l^+l^-\) in terms of the CP averaged helicity coefficients \(\Sigma_i\), computed in the MVll class:

\[ \Gamma'=- \frac {1}{4} ((3\Sigma_{1c} - \Sigma_{2c}) + 2(3\Sigma_{1s} - \Sigma_{2s}))\,. \]

Definition at line 1986 of file MVllObservables.h.

Public Member Functions
double	computeGammaPrimef (double qmin, QCD::lepton lep)
	A method to compute the observable \(\Gamma'\) in \(M \to V l^+l^-\) at a generic \(q^2\). More...
double	computeThValue ()
	The observable \(\Gamma'\) in \(M \to V l^+l^-\). More...
	GammaPrimef (const StandardModel &SM_i, QCD::meson meson_i, QCD::meson vector_i, QCD::lepton lep_i)
	Constructor. 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...
const std::vector< std::string >	getParametersForObservable ()
	A get method to get the parameters for the specific observable. 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...
void	setParametersForObservable (std::vector< std::string > parametersForObservable_i)
	A set method to get the parameters for the specific observable. More...
	ThObservable (const StandardModel &SM_i)
	Constructor. More...
	ThObservable (const ThObservable &orig)
	The copy constructor. More...
virtual	~ThObservable ()
	The default destructor. More...

Private Attributes
QCD::lepton	lep
QCD::meson	meson
QCD::meson	vectorM

Additional Inherited Members
Protected Attributes inherited from ThObservable
double	max
	the bin maximum. More...
double	min
	The bin minimum. More...
std::vector< std::string >	parametersForObservable
	a vector of parameter namesfor the specific observable More...
const StandardModel &	SM
	A reference to an object of StandardMode class. More...

Constructor & Destructor Documentation

GammaPrimef()

GammaPrimef::GammaPrimef	(	const StandardModel &	SM_i,
		QCD::meson	meson_i,
		QCD::meson	vector_i,
		QCD::lepton	lep_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
[in]	lep_i	final leptons of the decay

Definition at line 1039 of file MVllObservables.cpp.

: ThObservable(SM_i)
{
    lep = lep_i;
    meson = meson_i;
    vectorM = vector_i;
 
    setParametersForObservable(SM.getFlavour().getMVll(meson, vectorM, lep).initializeMVllParameters());
}

Member Function Documentation

computeGammaPrimef()

double GammaPrimef::computeGammaPrimef	(	double	qmin,
		QCD::lepton	lep
	)

A method to compute the observable \(\Gamma'\) in \(M \to V l^+l^-\) at a generic \(q^2\).

Parameters

[in]	qmin	\(q^2\) value
[in]	lep	final leptons of the decay

Returns

\(\Gamma'(q^2)\)

Definition at line 1049 of file MVllObservables.cpp.

{
    double q_min = qmin;
    QCD::lepton lep_i = lep;
 
    return ((3.*SM.getFlavour().getMVll(meson, vectorM, lep_i).getSigma(0,q_min) - SM.getFlavour().getMVll(meson, vectorM, lep_i).getSigma(2,q_min)) + 2.*(3.*SM.getFlavour().getMVll(meson, vectorM, lep_i).getSigma(1,q_min) - SM.getFlavour().getMVll(meson, vectorM, lep_i).getSigma(3,q_min)))/4.;
}

computeThValue()

double GammaPrimef::computeThValue ( )

virtual

The observable \(\Gamma'\) in \(M \to V l^+l^-\).

Returns

\(\Gamma'\)

Implements ThObservable.

Reimplemented in A_FBf, BRf_MVll, F_Lf, S_3f, S_4f, S_5f, S_7f, S_8f, and S_9f.

Definition at line 1057 of file MVllObservables.cpp.

{
    double q_min = getBinMin();
 
    return computeGammaPrimef(q_min, lep);
}

Member Data Documentation

lep

QCD::lepton GammaPrimef::lep

private

Final leptons type.

Definition at line 2013 of file MVllObservables.h.

meson

QCD::meson GammaPrimef::meson

private

Initial meson type.

Definition at line 2014 of file MVllObservables.h.

vectorM

QCD::meson GammaPrimef::vectorM

private

Final vector meson type.

Definition at line 2015 of file MVllObservables.h.

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

• MVllObservables.h
• MVllObservables.cpp