Btaunu Class Reference

#include <Btaunu.h>

Inheritance diagram for Btaunu:

Collaboration diagram for Btaunu:

Detailed Description

Definition at line 15 of file Btaunu.h.

Public Member Functions
	Btaunu (const StandardModel &SM_i)
double	computeThValue ()
	arXiv:1206.2634v2 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...

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

Btaunu::Btaunu

(

const StandardModel &

SM_i

)

constructor

Parameters

Flavour

Definition at line 10 of file Btaunu.cpp.

: ThObservable(SM_i)
{
    if (SM.ModelName().compare("StandardModel") != 0) std::cout << "\nWARNING: B to tau nu not implemented in: " + SM.ModelName() + " model, returning Standard Model value.\n" << std::endl;
};

Member Function Documentation

double Btaunu::computeThValue ( )

virtual

arXiv:1206.2634v2

Returns

theoretical value of | \( BR(B \rightarrow \tau \nu) \)|

Implements ThObservable.

Definition at line 16 of file Btaunu.cpp.

{
    gslpp::vector<gslpp::complex> ** allcoeff = SM.getMyFlavour()->ComputeCoeffbtaunu();
    double mtau = SM.getLeptons(StandardModel::TAU).getMass();
    double mB = SM.getMesons(QCD::B_P).getMass();
    double mb = SM.getQuarks(QCD::BOTTOM).getMass();
    double fact = 0.989;
    return 1./(64. * M_PI) * mtau * mtau * pow(fact * SM.getMesons(QCD::B_D).getDecayconst(), 2.) * mB * pow(1. - mtau * mtau / mB / mB, 2.) / SM.getMesons(QCD::B_P).computeWidth() * ((*(allcoeff[LO]))(0) + mB * mB/mb/mtau * ((*(allcoeff[LO]))(1) + (*(allcoeff[LO]))(2))).abs2();// PLEASE NOTE THE DECAY CONST
}

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

• Btaunu.h
• Btaunu.cpp