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Alpha_2a Class Reference

A class for the CKM angle \(\alpha \) in degrees. More...

#include <alpha_2a.h>

+ Inheritance diagram for Alpha_2a:

Detailed Description

A class for the CKM angle \(\alpha \) in degrees.

Author
HEPfit Collaboration

This class is used to compute the CKM angle \(\alpha \) in degrees, extracted as \(\pi + 1/2 arg(%AmpDB2) - \gamma \). The results is given in the range [0, 180] deg.

Definition at line 23 of file alpha_2a.h.

Public Member Functions

 Alpha_2a (const StandardModel &SM_i)
 Constructor. More...
 
double computeThValue ()
 
- 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 StandardModelgetModel ()
 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 StandardModelSM
 A reference to an object of StandardMode class. More...
 

Constructor & Destructor Documentation

◆ Alpha_2a()

Alpha_2a::Alpha_2a ( const StandardModel SM_i)

Constructor.

Parameters
[in]SM_ia reference to an object of type StandardModel

Definition at line 12 of file alpha_2a.cpp.

12 : ThObservable(SM_i) {
13 SM.getFlavour().getDB2(0);
14}
AmpDB2 & getDB2(int BMeson_i, bool flag_fixmub=false, bool flag_RI=false) const
Returns a reference to the meson dependent object for processes.
Definition: Flavour.cpp:228
const Flavour & getFlavour() const
ThObservable(const StandardModel &SM_i)
Constructor.
Definition: ThObservable.h:32
const StandardModel & SM
A reference to an object of StandardMode class.
Definition: ThObservable.h:121

Member Function Documentation

◆ computeThValue()

double Alpha_2a::computeThValue ( )
virtual
Returns
The CKM angle \(\alpha \) in degrees

Implements ThObservable.

Definition at line 16 of file alpha_2a.cpp.

17{
18 // alpha is really extracted as pi + 1/2 arg AmpDB2 - gamma
19 double a_2a = (M_PI + SM.getFlavour().getDB2(0).getM21(FULLNLO).arg()/2. - SM.getCKM().computeGamma() - SM.getPhiBd())/M_PI*180.;
20 if (a_2a < 0.)
21 a_2a += 180.;
22 else if (a_2a > 180.)
23 a_2a -= 180.;
24 return(a_2a);
25}
@ FULLNLO
Definition: OrderScheme.h:38
gslpp::complex getM21(orders order)
The value of for mesons.
Definition: AmpDB2.h:51
const double computeGamma() const
The CKM angle .
Definition: CKM.cpp:125
const CKM & getCKM() const
A get method to retrieve the member object of type CKM.
virtual const double getPhiBd() const
Half the relative phase of the $B_d$ mixing amplitude w.r.t. the Standard Model one.

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