A class for \(|\epsilon'_K/\epsilon_K|\) that parametrizes direct CPV in the Kaon sector. More...

#include <EpsilonP_O_Epsilon.h>

Inheritance diagram for EpsilonP_O_Epsilon:

Detailed Description

A class for \(|\epsilon'_K/\epsilon_K|\) that parametrizes direct CPV in the Kaon sector.

Author: HEPfit Collaboration

Copyright: GNU General Public License

This class is used to compute the theoretical value of \(|\epsilon'_K/\epsilon_K|\). This parameter gets contributions both from the SM and many NP models.

Model parameters

The model parameters of EpsilonP_O_Epsilon are summarized below:

Label	LaTeX symbol	Description
ReA0_Kd	\({\cal Re}(A_0(K\to\pi\pi))\)	The experimental value of the real part of the amplitude for \(K^0\to\pi\pi\) with \(\Delta I=0\).
ReA2_Kd	\({\cal Re}(A_2(K\to\pi\pi))\)	the experimental value of the real part of the amplitude for \(K^0\to\pi\pi\) with \(\Delta I=2\).
Omega_eta_etap	\(\Omega_{\eta/\eta'}\)	The isospin breaking contribution in \(K^0\to\pi\pi\).

Definition at line 55 of file EpsilonP_O_Epsilon.h.

Public Member Functions
double	computeThValue ()

	EpsilonP_O_Epsilon (const StandardModel &SM_i)

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...

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...

Private Member Functions inherited from AmpDS1
	AmpDS1 (const StandardModel &SM_i)
	compute the amplitude for \( K_L \) decay in 2 pion More...

gslpp::complex	AmpDS1pp0 (orders order)

gslpp::complex	AmpDS1pp2 (orders order)

Constructor & Destructor Documentation

◆ EpsilonP_O_Epsilon()

EpsilonP_O_Epsilon::EpsilonP_O_Epsilon ( const StandardModel & SM_i )

constructor

Parameters

Flavour

Definition at line 12 of file EpsilonP_O_Epsilon.cpp.

 : ThObservable(SM_i), AmpDS1(SM_i)
 {
     setParametersForObservable(make_vector<std::string>() << "ReA0_Kd" << "ReA2_Kd" << "Omega_eta_etap");
 };

Member Function Documentation

◆ computeThValue()

double EpsilonP_O_Epsilon::computeThValue ( )

virtual

Returns: theoretical value of \(|\epsilon'_K/\epsilon_K|\)

Implements ThObservable.

Definition at line 18 of file EpsilonP_O_Epsilon.cpp.

 {
     return (M_SQRT1_2 * (SM.getOptionalParameter("ReA2_Kd") / SM.getOptionalParameter("ReA0_Kd") / SM.getOptionalParameter("ReA0_Kd")) * ((1 / SM.getOptionalParameter("ReA2_Kd") / SM.getOptionalParameter("ReA0_Kd")) * AmpDS1pp2(NLO).imag() - (1 - SM.getOptionalParameter("Omega_eta_etap")) * AmpDS1pp0(NLO).imag()));
 }

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