An observable class for the deviation from the SM of the \(Z b_{L} b_{L}\) coupling \(\delta g_{Zbb}^{L}/g_{SM}\). More...

#include <NP_couplings.h>

Inheritance diagram for deltagEffZbbL:

Detailed Description

An observable class for the deviation from the SM of the \(Z b_{L} b_{L}\) coupling \(\delta g_{Zbb}^{L}/g_{SM}\).

Author: HEPfit Collaboration

Copyright: GNU General Public License

This class is used to compute the deviation from the SM on the \(Z b_{L} b_{L}\) coupling \(\delta g_{Zbb}^{L}/g_{SM}\).

Definition at line 1442 of file NP_couplings.h.

Public Member Functions
double	computeThValue ()
	The deviation from the SM of the \(Z b_{L} b_{L}\) coupling \(\delta g_{Zbb}^{L}/g_{SM}\). More...

	deltagEffZbbL (const StandardModel &SM_i)
	Constructor. More...

virtual	~deltagEffZbbL ()
	Destructor of the deltagEffZbbL class. 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
const NPbase *	myNPbase

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

◆ deltagEffZbbL()

deltagEffZbbL::deltagEffZbbL ( const StandardModel & SM_i )

Constructor.

Parameters

[in] SM_i a reference to an object of type StandardModel

Definition at line 1138 of file NP_couplings.cpp.

:ThObservable(SM_i)
{
    if ((myNPbase = dynamic_cast<const NPbase*> (&SM)) == NULL)
        throw std::runtime_error("deltagEffZbbL called with a class whose parent is not NPbase");
}

◆ ~deltagEffZbbL()

deltagEffZbbL::~deltagEffZbbL ( )

virtual

Destructor of the deltagEffZbbL class.

Definition at line 1146 of file NP_couplings.cpp.

1147{}

Member Function Documentation

◆ computeThValue()

double deltagEffZbbL::computeThValue ( )

virtual

The deviation from the SM of the \(Z b_{L} b_{L}\) coupling \(\delta g_{Zbb}^{L}/g_{SM}\).

Returns: \(\delta g_{Zbb}^{L}/g_{SM}\)

Implements ThObservable.

Definition at line 1149 of file NP_couplings.cpp.

{
    double dGaZff = myNPbase->deltaGamma_Zf(SM.getQuarks(StandardModel::BOTTOM));
    double dAf = myNPbase->deltaA_f(SM.getQuarks(StandardModel::BOTTOM));    
    
    double sw2_tree = 1.0 - (SM.StandardModel::Mw_tree())*(SM.StandardModel::Mw_tree())/(SM.getMz())/(SM.getMz());
    double cw2_tree = 1.0 - sw2_tree;
    
    double Nc = 3.0;
    
    double gLSM = (SM.getQuarks(StandardModel::BOTTOM)).getIsospin() 
    - ((SM.getQuarks(StandardModel::BOTTOM)).getCharge())*sw2_tree;
    double gRSM = - ((SM.getQuarks(StandardModel::BOTTOM)).getCharge())*sw2_tree;
    
    double dg;
    
    dg =  3.0 * sw2_tree * cw2_tree * dGaZff / (gLSM*gLSM + gRSM*gRSM) / (SM.getMz()) / (SM.alphaMz()) / Nc;
    
    dg = dg + (gLSM*gLSM + gRSM*gRSM) * dAf / (4.0 * gLSM*gLSM);
        
    return dg;
}

Member Data Documentation

◆ myNPbase

const NPbase* deltagEffZbbL::myNPbase

private

Definition at line 1463 of file NP_couplings.h.

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