F_L Class Reference

A class for the binned observable \(<F_L>\) in \(M \to V l^+l^-\). More...

#include <MVllObservables.h>

Inheritance diagram for F_L:
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Collaboration diagram for F_L:
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Detailed Description

A class for the binned observable \(<F_L>\) in \(M \to V l^+l^-\).

Author
HEPfit Collaboration

This class is used to compute the binned observable \(<F_L>\) in \(M \to V l^+l^-\) in terms of the binned CP averaged helicity coefficients \(<\Sigma_i>\), computed in the MVll class, and the meson width \(M_W\):

\[ <BR>= \frac {3<\Sigma_{1c}>-<\Sigma_{2c}>}{4<\Gamma'>} \,. \]

Definition at line 433 of file MVllObservables.h.

Public Member Functions

double computeFL (double qmin, double qmax, StandardModel::lepton lep)
 A method to compute the binned observable \(<F_L>\) in \(M \to V l^+l^-\) in a generic bin. More...
 
double computeThValue ()
 The binned observable \(<F_L>\) in \(M \to V l^+l^-\). More...
 
 F_L (const StandardModel &SM_i, StandardModel::meson meson_i, StandardModel::meson vector_i, StandardModel::lepton lep_i)
 Constructor. More...
 
- Public Member Functions inherited from GammaPrime
double computeGammaPrime (double qmin, double qmax, StandardModel::lepton lep)
 A method to compute the binned observable \(<\Gamma'>\) in \(M \to V l^+l^-\) in a generic bin. More...
 
 GammaPrime (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

F_L::F_L ( 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 303 of file MVllObservables.cpp.

304 : GammaPrime(SM_i, meson_i, vector_i, lep_i)
305 {
306  lep = lep_i;
307  meson = meson_i;
308  vectorM = vector_i;
309 }
StandardModel::meson meson
StandardModel::meson vectorM
StandardModel::lepton lep
GammaPrime(const StandardModel &SM_i, StandardModel::meson meson_i, StandardModel::meson vector_i, StandardModel::lepton lep_i)
Constructor.

Member Function Documentation

double F_L::computeFL ( double  qmin,
double  qmax,
StandardModel::lepton  lep 
)

A method to compute the binned observable \(<F_L>\) in \(M \to V l^+l^-\) in a generic bin.

Parameters
[in]qminminimal value of the bin
[in]qmaxmaximal value of the bin
[in]lepfinal leptons of the decay
Returns
\(<F_L>_{[qmin,qmax]}\)

Definition at line 311 of file MVllObservables.cpp.

312 {
313  double q_min = qmin;
314  double q_max = qmax;
315  StandardModel::lepton lep_i = lep;
316 
317  double sigma0 = SM.getMyFlavour()->getMVll(meson, vectorM, lep_i)->integrateSigma(0,q_min,q_max);
318  double sigma2 = SM.getMyFlavour()->getMVll(meson, vectorM, lep_i)->integrateSigma(2,q_min,q_max);
319 
320  return (3.*sigma0 - sigma2) / (4. * computeGammaPrime(q_min, q_max, lep_i)) ;
321 }
double integrateSigma(int i, double q_min, double q_max)
The integral of from to .
Definition: MVll.cpp:1512
StandardModel::meson meson
Flavour * getMyFlavour() const
const StandardModel & SM
A reference to an object of StandardMode class.
Definition: ThObservable.h:99
double computeGammaPrime(double qmin, double qmax, StandardModel::lepton lep)
A method to compute the binned observable in in a generic bin.
StandardModel::meson vectorM
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
lepton
An enum type for leptons.
double F_L::computeThValue ( )
virtual

The binned observable \(<F_L>\) in \(M \to V l^+l^-\).

Returns
\(<F_L>\)

Reimplemented from GammaPrime.

Reimplemented in RT_MVll, and RL_MVll.

Definition at line 323 of file MVllObservables.cpp.

324 {
325  double q_min = getBinMin();
326  double q_max = getBinMax();
327 
328  return computeFL(q_min, q_max, lep);
329 }
double getBinMin()
A get method to get the minimum value of the bin.
Definition: ThObservable.h:79
double getBinMax()
A get method to get the maximum value of the bin.
Definition: ThObservable.h:88
double computeFL(double qmin, double qmax, StandardModel::lepton lep)
A method to compute the binned observable in in a generic bin.
StandardModel::lepton lep

Member Data Documentation

StandardModel::lepton F_L::lep
private

Final leptons type.

Definition at line 461 of file MVllObservables.h.

StandardModel::meson F_L::meson
private

Initial meson type.

Definition at line 462 of file MVllObservables.h.

StandardModel::meson F_L::vectorM
private

Final vector meson type.

Definition at line 463 of file MVllObservables.h.


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