M_1Prime Class Reference

A class for the observable \(M_1'\) in \(M \to V l^+l^-\). More...

#include <MVllObservables.h>

Inheritance diagram for M_1Prime:
[legend]
Collaboration diagram for M_1Prime:
[legend]

Detailed Description

A class for the observable \(M_1'\) in \(M \to V l^+l^-\).

Author
HEPfit Collaboration

This class is used to compute the observable \(M_1'\) in \(M \to V l^+l^-\) in terms of the helicity amplitudes \(H_{A,V}^{+,-}\) computed in the MVll class:

\[ M_1'= \frac {|H_V^+|^2 + |H_V^-|^2 - |H_A^+|^2 - |H_A^-|^2}{2(|H_V^+|^2 + |H_V^-|^2 + |H_A^+|^2 + |H_A^-|^2)} \,. \]

Definition at line 723 of file MVllObservables.h.

Public Member Functions

double computeThValue ()
 The observable \(M_1'\) in \(M \to V l^+l^-\). More...
 
 M_1Prime (const StandardModel &SM_i, StandardModel::meson meson_i, StandardModel::meson vector_i, StandardModel::lepton lep_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...
 
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...
 
 ThObservable (const StandardModel &SM_i)
 Constructor. More...
 
 ThObservable (const ThObservable &orig)
 The copy constructor. More...
 
virtual ~ThObservable ()
 The default destructor. More...
 

Private Attributes

StandardModel::lepton lep
 
StandardModel::meson meson
 
StandardModel::meson vectorM
 

Additional Inherited Members

- Protected Attributes inherited from ThObservable
double max
 the bin maximum. More...
 
double min
 The bin minimum. More...
 
const StandardModelSM
 A reference to an object of StandardMode class. More...
 

Constructor & Destructor Documentation

M_1Prime::M_1Prime ( const StandardModel SM_i,
StandardModel::meson  meson_i,
StandardModel::meson  vector_i,
StandardModel::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 332 of file MVllObservables.cpp.

333 : ThObservable(SM_i)
334 {
335  lep = lep_i;
336  meson = meson_i;
337  vectorM = vector_i;
338 }
StandardModel::meson vectorM
ThObservable(const StandardModel &SM_i)
Constructor.
Definition: ThObservable.h:29
StandardModel::lepton lep
StandardModel::meson meson

Member Function Documentation

double M_1Prime::computeThValue ( )
virtual

The observable \(M_1'\) in \(M \to V l^+l^-\).

Returns
\(M_1'\)

Implements ThObservable.

Definition at line 340 of file MVllObservables.cpp.

341 {
342  double q_min = getBinMin();
343 
344  return ( SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_V_p(q_min).abs2() + SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_V_m(q_min).abs2() - SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_A_p(q_min).abs2() - SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_A_m(q_min).abs2() )/
345  ( 2.*( SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_V_p(q_min).abs2() + SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_V_m(q_min).abs2() + SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_A_p(q_min).abs2() + SM.getMyFlavour()->getMVll(meson, vectorM, lep)->H_A_m(q_min).abs2() ) );
346 }
StandardModel::meson vectorM
double abs2() const
gslpp::complex H_A_m(double q2)
The helicity amplitude .
Definition: MVll.cpp:1398
double getBinMin()
A get method to get the minimum value of the bin.
Definition: ThObservable.h:79
gslpp::complex H_V_p(double q2)
The helicity amplitude .
Definition: MVll.cpp:1378
gslpp::complex H_V_m(double q2)
The helicity amplitude .
Definition: MVll.cpp:1383
Flavour * getMyFlavour() const
const StandardModel & SM
A reference to an object of StandardMode class.
Definition: ThObservable.h:99
StandardModel::lepton lep
MVll * getMVll(StandardModel::meson meson_i, StandardModel::meson vector_i, StandardModel::lepton lep_i)
Returns the initial and final state dependent object for .
Definition: Flavour.h:199
StandardModel::meson meson
gslpp::complex H_A_p(double q2)
The helicity amplitude .
Definition: MVll.cpp:1393

Member Data Documentation

StandardModel::lepton M_1Prime::lep
private

Final leptons type.

Definition at line 742 of file MVllObservables.h.

StandardModel::meson M_1Prime::meson
private

Initial meson type.

Definition at line 743 of file MVllObservables.h.

StandardModel::meson M_1Prime::vectorM
private

Final vector meson type.

Definition at line 744 of file MVllObservables.h.


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