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DmBd Class Reference

A class for \(\Delta M_{B_d}\), the difference in mass of between the heavy and light mass eigenstates of the neutral \(B_d\) system. More...

#include <DmBd.h>

+ Inheritance diagram for DmBd:

Detailed Description

A class for \(\Delta M_{B_d}\), the difference in mass of between the heavy and light mass eigenstates of the neutral \(B_d\) system.

Author
HEPfit Collaboration

This class is used to compute the theoretical value of \(\Delta M_{B_d}\). The short distance contributions to this parameter is calculable both in the SM and in NP models. In the SM the short distance contribution is dominated by the top loop in the box diagram.

Definition at line 27 of file DmBd.h.

Public Member Functions

double computeThValue ()
 
 DmBd (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 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

◆ DmBd()

DmBd::DmBd ( const StandardModel SM_i)

Constructor.

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

Definition at line 12 of file DmBd.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 DmBd::computeThValue ( )
virtual
Returns
theoretical value of \(\Delta M_{B_d}\)

Implements ThObservable.

Definition at line 16 of file DmBd.cpp.

17{
18 return(2. * SM.getCBd() * SM.getFlavour().getDB2(0).getM21(FULLNLO).abs());
19}
@ FULLNLO
Definition: OrderScheme.h:38
gslpp::complex getM21(orders order)
The value of for mesons.
Definition: AmpDB2.h:51
virtual const double getCBd() const
The ratio of the absolute value of the $B_d$ mixing amplitude over the Standard Model value.

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