THDMfunctions Class Reference

#include <THDMfunctions.h>

Inheritance diagram for THDMfunctions:

Collaboration diagram for THDMfunctions:

Detailed Description

Author

HEPfit Collaboration

Copyright

GNU General Public License

Some functions which are needed for the Higgs observables.

Definition at line 23 of file THDMfunctions.h.

Public Member Functions
double	computeThValue ()
	Empty function. More...
gslpp::complex	f_func (const double x) const
	f function for the gamma gamma coupling to h, H and A More...
int	HSTheta (const double x) const
	Heaviside \(\Theta\) function. More...
gslpp::complex	Int1 (const double tau, const double lambda) const
	\(I_1\) function for Z gamma coupling to h, H and A More...
gslpp::complex	Int2 (const double tau, const double lambda) const
	\(I_2\) function for Z gamma coupling to h, H and A More...
double	KaellenFunction (const double a, const double b, const double c) const
	Kaellen function. More...
	THDMfunctions (const StandardModel &SM_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...
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 Member Functions
gslpp::complex	g_func (const double x) const
	g function for the Int1 function More...

Additional Inherited Members
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

THDMfunctions::THDMfunctions ( const StandardModel &  SM_i )

inline

Constructor.

Parameters

[in]

?

Definition at line 30 of file THDMfunctions.h.

    : ThObservable(SM_i)//, myTHDM(static_cast<const THDM*> (&SM_i))
    {
    };

Member Function Documentation

double THDMfunctions::computeThValue ( )

virtual

Empty function.

Implements ThObservable.

Definition at line 11 of file THDMfunctions.cpp.

{
    return 0;
}

gslpp::complex THDMfunctions::f_func

(

const double

x

)

const

f function for the gamma gamma coupling to h, H and A

Returns

\(f(x)\)

The definition can be found in (2.19) of [85].

Definition at line 18 of file THDMfunctions.cpp.

                                                      {
    if(x<1) {
    gslpp::complex z = -gslpp::complex::i()*M_PI;
    return -pow(log((1+sqrt(1-x))/(1-sqrt(1-x)))+z,2)/4.0;
    }
    else {
        return pow(asin(sqrt(1.0/x)),2);
    }
}

gslpp::complex THDMfunctions::g_func ( const double  x ) const

private

g function for the Int1 function

Returns

\(g(x)\)

The definition can be found in (2.24) of [85].

Definition at line 30 of file THDMfunctions.cpp.

                                                      {
    if(x<1) {
    gslpp::complex z = -gslpp::complex::i()*M_PI;
    gslpp::complex gs1 = sqrt(1-x)*(log((1+sqrt(1-x))/(1-sqrt(1-x)))+z)/2.0;
    return gs1;
    }
    else {
        gslpp::complex gg1 = sqrt(x-1)*asin(sqrt(1.0/x));
        return gg1;
    }
}

int THDMfunctions::HSTheta

(

const double

x

)

const

Heaviside \(\Theta\) function.

Returns

\(\Theta(x)\)

Gives 1 for \(x\geq 0\) and 0 for \(x<0\).

Definition at line 58 of file THDMfunctions.cpp.

                                               {
    if(x<0)return 0.0;
    else return 1.0;
}

gslpp::complex THDMfunctions::Int1	(	const double	tau,
		const double	lambda
	)		const

\(I_1\) function for Z gamma coupling to h, H and A

Returns

\(I_1(\tau,\lambda)\)

The definition can be found in (2.24) of [85].

Definition at line 44 of file THDMfunctions.cpp.

                                                                           {
    return tau*lambda/(tau-lambda)/2.0+tau*tau*lambda*lambda/((tau-lambda)
           *(tau-lambda))/2.0*(f_func(tau)-f_func(lambda))+tau*tau*lambda/((tau-lambda)
           *(tau-lambda))*(g_func(tau)-g_func(lambda));
    }

gslpp::complex THDMfunctions::Int2	(	const double	tau,
		const double	lambda
	)		const

\(I_2\) function for Z gamma coupling to h, H and A

Returns

\(I_2(\tau,\lambda)\)

The definition can be found in (2.24) of [85].

Definition at line 52 of file THDMfunctions.cpp.

                                                                           {
    return -tau*lambda/(tau-lambda)/2.0*(f_func(tau)-f_func(lambda));
    }

double THDMfunctions::KaellenFunction	(	const double	a,
		const double	b,
		const double	c
	)		const

Kaellen function.

Returns

\(\kappa(a,b,c)=\frac{1}{2a}\sqrt{a^2+b^a+c^2-2ab-2ac-2bc}\)

Definition at line 65 of file THDMfunctions.cpp.

                                                                                          {
    double x = (a*a-b*b-c*c)*(a*a-b*b-c*c)-4.0*b*b*c*c;
    return HSTheta(x)*sqrt(std::abs(x))/(2.0*a);
}

---

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

• THDMfunctions.h
• THDMfunctions.cpp