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xi.cpp
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1/*
2 * Copyright (C) 2022 HEPfit Collaboration
3 *
4 *
5 * For the licensing terms see doc/COPYING.
6 */
7
8#include "xi.h"
9#include "StandardModel.h"
10
11xi::xi(const StandardModel& SM_i) : ThObservable(SM_i)
12{
13 SM.initializeBParameter("BBd");
14 SM.initializeBParameter("BBs");
15};
16
17double xi::computeThValue()
18{
19 return(SM.getMesons(QCD::B_S).getDecayconst()*sqrt(SM.getBBs().getBpars()(0))/(SM.getMesons(QCD::B_D).getDecayconst()*sqrt(SM.getBBd().getBpars()(0))));
20}
BParameter::getBpars
const gslpp::vector< double > & getBpars() const
A get method for the vector of the bag parameters.
Definition: BParameter.h:176
Meson::getDecayconst
const double & getDecayconst() const
A get method for the decay constant of the meson.
Definition: Meson.h:360
QCD::B_D
@ B_D
Definition: QCD.h:344
QCD::B_S
@ B_S
Definition: QCD.h:346
QCD::getMesons
const Meson & getMesons(const QCD::meson m) const
A get method to access a meson as an object of the type Meson.
Definition: QCD.h:526
QCD::initializeBParameter
void initializeBParameter(std::string name_i) const
A method to initialize B Parameter and the corresponding meson.
Definition: QCD.cpp:211
QCD::getBBs
const BParameter & getBBs() const
For getting the bag parameters corresponding to the operator basis in process in the meson system.
Definition: QCD.h:640
QCD::getBBd
const BParameter & getBBd() const
For getting the bag parameters corresponding to the operator basis in process in the meson system.
Definition: QCD.h:629
StandardModel
A model class for the Standard Model.
Definition: StandardModel.h:509
ThObservable
A class for a model prediction of an observable.
Definition: ThObservable.h:25
ThObservable::SM
const StandardModel & SM
A reference to an object of StandardMode class.
Definition: ThObservable.h:121
xi::computeThValue
virtual double computeThValue()
Definition: xi.cpp:17
xi::xi
xi(const StandardModel &SM_i)
Constructor.
Definition: xi.cpp:11