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Abs2Amperp_MVpsi Class Reference

A class for the absolute value ^2 of the _|_ polarization amplitude of \(M \to V \psi\). More...

#include <MVllObservables.h>

+ Inheritance diagram for Abs2Amperp_MVpsi:

Detailed Description

A class for the absolute value ^2 of the _|_ polarization amplitude of \(M \to V \psi\).

Author
HEPfit Collaboration

This class is used to compute the observable \(QCDfC9p_3\) in \(M \to V l^+l^-\)

Definition at line 2776 of file MVllObservables.h.

Public Member Functions

 Abs2Amperp_MVpsi (const StandardModel &SM_i, QCD::meson meson_i, QCD::meson vector_i, QCD::lepton lep_i)
 Constructor. More...
 
double computeThValue ()
 The observable Abs(A_|_) of \(M \to V \psi\). 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...
 

Private Attributes

QCD::lepton lep
 
QCD::meson meson
 
QCD::meson vectorM
 

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

◆ Abs2Amperp_MVpsi()

Abs2Amperp_MVpsi::Abs2Amperp_MVpsi ( const StandardModel SM_i,
QCD::meson  meson_i,
QCD::meson  vector_i,
QCD::lepton  lep_i 
)

Constructor.

Parameters
[in]SM_ia reference to an object of type StandardModel
[in]meson_iinitial meson of the decay
[in]vector_ifinal vector meson of the decay
[in]lep_ifinal leptons of the decay

Definition at line 1479 of file MVllObservables.cpp.

1480: ThObservable(SM_i)
1481{
1482 lep = lep_i;
1483 meson = meson_i;
1484 vectorM = vector_i;
1485
1487}
MVll & getMVll(QCD::meson meson_i, QCD::meson vector_i, QCD::lepton lep_i) const
Returns the initial and final state dependent object for .
Definition: Flavour.cpp:209
std::vector< std::string > initializeMVllParameters()
A method for initializing the parameters necessary for MVll.
Definition: MVll.cpp:160
const Flavour & getFlavour() const
void setParametersForObservable(std::vector< std::string > parametersForObservable_i)
A set method to get the parameters for the specific observable.
Definition: ThObservable.h:109
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 Abs2Amperp_MVpsi::computeThValue ( )
virtual

The observable Abs(A_|_) of \(M \to V \psi\).

Returns
Abs(A//)^2 of \(M \to V \psi\)

Implements ThObservable.

Definition at line 1489 of file MVllObservables.cpp.

1490{
1491 double q2 = getBinMin();
1492 double A2_0 = SM.getFlavour().getMVll(meson, vectorM, lep).AmpMVpsi_zExpansion(q2,0).abs2();
1493 double A2_par = SM.getFlavour().getMVll(meson, vectorM, lep).AmpMVpsi_zExpansion(q2,1).abs2();
1494 double A2_perp = SM.getFlavour().getMVll(meson, vectorM, lep).AmpMVpsi_zExpansion(q2,2).abs2();
1495 return A2_perp/(A2_0+A2_par+A2_perp);
1496}
gslpp::complex AmpMVpsi_zExpansion(double mpsi, int tran)
Polarization amplitudes for M to V psi, Eq. B.16 of arXiv:2206.03797.
Definition: MVll.cpp:2538
double getBinMin()
A get method to get the minimum value of the bin.
Definition: ThObservable.h:82

Member Data Documentation

◆ lep

QCD::lepton Abs2Amperp_MVpsi::lep
private

Final leptons type.

Definition at line 2795 of file MVllObservables.h.

◆ meson

QCD::meson Abs2Amperp_MVpsi::meson
private

Initial meson type.

Definition at line 2796 of file MVllObservables.h.

◆ vectorM

QCD::meson Abs2Amperp_MVpsi::vectorM
private

Final vector meson type.

Definition at line 2797 of file MVllObservables.h.


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