sigmaHadron Class Reference

An observable class for the cross section of \(e^+ e^-\to Z\to \mathrm{hadrons}\) at the \(Z\) pole. More...

#include <sigmaHadron.h>

Inheritance diagram for sigmaHadron:
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Collaboration diagram for sigmaHadron:
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Detailed Description

An observable class for the cross section of \(e^+ e^-\to Z\to \mathrm{hadrons}\) at the \(Z\) pole.

Author
HEPfit Collaboration

This class is used to compute the cross section for \(e^+ e^-\to Z\to \mathrm{hadrons}\) at the \(Z\) pole, in terms of \(\Gamma_e\), \(\Gamma_h\) and \(\Gamma_Z\) in the EW class:

\[ \sigma_h^0 = \frac{12\pi}{M_Z^2}\frac{\Gamma_e\Gamma_h}{\Gamma_Z^2}\,. \]

See also
EW_NPZff::sigmaHadron() and the detailed description of EW class for the inclusion of new physics contribution

Definition at line 32 of file sigmaHadron.h.

Public Member Functions

double computeThValue ()
 The cross section for the process \(e^+ e^-\to Z\to \mathrm{hadrons}\) at the \(Z\) pole, \(\sigma_h^0\), in units of nb. More...
 
 sigmaHadron (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...
 
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...
 

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

sigmaHadron::sigmaHadron ( const StandardModel SM_i)
inline

Constructor.

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

Definition at line 39 of file sigmaHadron.h.

40  : ThObservable(SM_i)
41  {
42  };
ThObservable(const StandardModel &SM_i)
Constructor.
Definition: ThObservable.h:29

Member Function Documentation

double sigmaHadron::computeThValue ( )
virtual

The cross section for the process \(e^+ e^-\to Z\to \mathrm{hadrons}\) at the \(Z\) pole, \(\sigma_h^0\), in units of nb.

Returns
\(\sigma_h^0\) in units of nb.

Implements ThObservable.

Definition at line 10 of file sigmaHadron.cpp.

11 {
12  return ( SM.sigma0_had() * SM.GeVminus2_to_nb);
13 }
virtual double sigma0_had() const
The hadronic cross section for at the -pole, .
static const double GeVminus2_to_nb
const StandardModel & SM
A reference to an object of StandardMode class.
Definition: ThObservable.h:99

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