tauKnu_o_tauPnu Class Reference

#include <tauKnu_o_tauPnu.h>

Inheritance diagram for tauKnu_o_tauPnu:

Detailed Description

Definition at line 29 of file tauKnu_o_tauPnu.h.

Public Member Functions
double	computeThValue ()
	arXiv:1206.2634v2 More...
	tauKnu_o_tauPnu (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...
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...

Constructor & Destructor Documentation

tauKnu_o_tauPnu()

tauKnu_o_tauPnu::tauKnu_o_tauPnu

(

const StandardModel &

SM_i

)

Constructor.

Parameters

[in]

SM_i

a reference to an object of type StandardModel

Definition at line 16 of file tauKnu_o_tauPnu.cpp.

: ThObservable(SM_i)
{
    
 
    setParametersForObservable(make_vector<std::string>() << "fKofP" << "deltauK2tauP2em");
    SM.initializeMeson(QCD::P_P);
    SM.initializeMeson(QCD::K_P);
    
};

Member Function Documentation

computeThValue()

double tauKnu_o_tauPnu::computeThValue ( )

virtual

arXiv:1206.2634v2

Returns

theoretical value of | \( BR(D \rightarrow \lepton \nu) \)|

Implements ThObservable.

Definition at line 28 of file tauKnu_o_tauPnu.cpp.

{
    double mtau = SM.getLeptons(StandardModel::TAU).getMass();
 
    //The WC are written in the LEFT basis of arxiv:1709.04486 the expressions can be found in arxiv:1706.00410 and arxiv:1605.07114 in a similar basis
    gslpp::vector<gslpp::complex> ** allcoeff_tau_K_nu = SM.getFlavour().ComputeCoeffdiujlknu(1,0,2,mtau);
    gslpp::vector<gslpp::complex> ** allcoeff_tau_P_nu = SM.getFlavour().ComputeCoeffdiujlknu(0,0,2,mtau);
 
 
    double mK = SM.getMesons(QCD::K_P).getMass();
    double mP = SM.getMesons(QCD::P_P).getMass();
    
    
    double mu = SM.getQuarks(QCD::UP).getMass();
    double md = SM.getQuarks(QCD::DOWN).getMass();
    double ms = SM.getQuarks(QCD::STRANGE).getMass();
    
    //double  deltauK2tauP2em= 0.0004;
    //double fKofP = 1.1932;
    
    
    double fKofP = SM.getOptionalParameter("fKofP");
    double deltauK2tauP2em = SM.getOptionalParameter("deltauK2tauP2em");
    
    
    double num = ((*(allcoeff_tau_K_nu[LO]))(0) -(*(allcoeff_tau_K_nu[LO]))(1) + mK * mK / (ms+mu) / mtau * ((*(allcoeff_tau_K_nu[LO]))(2) - (*(allcoeff_tau_K_nu[LO]))(3))).abs2();
    double den = ((*(allcoeff_tau_P_nu[LO]))(0) -(*(allcoeff_tau_P_nu[LO]))(1) + mP * mP / (md+mu) / mtau * ((*(allcoeff_tau_P_nu[LO]))(2) - (*(allcoeff_tau_P_nu[LO]))(3))).abs2();
    
    //double WCnum = 1.0;
    //double WCden = 1.0;
   
    //return 1.;
    return (1-mK*mK/mtau/mtau) * (1-mK*mK/mtau/mtau)/(1-mP*mP/mtau/mtau)/(1-mP*mP/mtau/mtau)*fKofP*fKofP*(1+deltauK2tauP2em)*num/den;
 
}

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

• tauKnu_o_tauPnu.h
• tauKnu_o_tauPnu.cpp