ThePEG::MEee2gZ2qq Class Reference

The MEee2gZ2qq class implements the $e^+e^-\rightarrow\gamma/Z^0\rightarrow q\bar{q}$ matrix element. More...

#include <MEee2gZ2qq.h>

Inheritance diagram for ThePEG::MEee2gZ2qq:

ThePEG::ME2to2QCD ThePEG::ME2to2Base ThePEG::MEBase ThePEG::HandlerBase ThePEG::LastXCombInfo< XC > ThePEG::HandlerBaseT< T > ThePEG::Interfaced ThePEG::InterfacedBase ThePEG::Base ThePEG::Named ThePEG::Pointer::ReferenceCounted

List of all members.

Public Member Functions

Standard constructors and destructors.
 MEee2gZ2qq ()
 Default constructor.
Virtual functions required by the MEBase class.
virtual unsigned int orderInAlphaS () const
 Return the order in $\alpha_S$ in which this matrix element is given.
virtual unsigned int orderInAlphaEW () const
 Return the order in $\alpha_{EM}$ in which this matrix element is given.
virtual double me2 () const
 The matrix element for the kinematical configuration previously provided by the last call to setKinematics(), suitably scaled by sHat() to give a dimension-less number.
virtual void getDiagrams () const
 Add all possible diagrams with the add() function.
virtual Selector< const
ColourLines * > 
colourGeometries (tcDiagPtr diag) const
 Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities.
virtual Selector< DiagramIndexdiagrams (const DiagramVector &dv) const
 Get diagram selector.
virtual Energy2 scale () const
 Return the scale associated with the last set phase space point.
Functions used by the persistent I/O system.
void persistentOutput (PersistentOStream &os) const
 Function used to write out object persistently.
void persistentInput (PersistentIStream &is, int version)
 Function used to read in object persistently.

Static Public Member Functions

static void Init ()
 Standard Init function used to initialize the interface.

Protected Member Functions

Clone Methods.
virtual IBPtr clone () const
 Make a simple clone of this object.
virtual IBPtr fullclone () const
 Make a clone of this object, possibly modifying the cloned object to make it sane.
Standard Interfaced functions.
virtual void doinit ()
 Initialize this object after the setup phase before saving an EventGenerator to disk.

Protected Attributes

vector< double > coefs
 Constants for the different terms set from the StandardModel in the init() function.
Energy2 mZ2
 The squared mass of the Z0.
Energy2 GZ2
 The squared width of the Z0.
double lastCont
 The last continuum term to be used to select primary diagram.
double lastBW
 The last Breit-Wigner term to be used to select primary diagram.

Private Member Functions

MEee2gZ2qqoperator= (const MEee2gZ2qq &)
 Private and non-existent assignment operator.

Static Private Attributes

static ClassDescription
< MEee2gZ2qq
initMEee2gZ2qq
 Describe a concrete class with persistent data.


Detailed Description

The MEee2gZ2qq class implements the $e^+e^-\rightarrow\gamma/Z^0\rightarrow q\bar{q}$ matrix element.

Both the continuum and $Z^0$ pole term as well as the interference term is included. Although not a strict QCD matrix element the class inherits from ME2to2QCD, mainly to inherit the parameter for the number of active quark flavours.

See also:
The interfaces defined for MEee2gZ2qq.

ME2to2QCD

Definition at line 29 of file MEee2gZ2qq.h.


Member Function Documentation

virtual unsigned int ThePEG::MEee2gZ2qq::orderInAlphaS (  )  const [virtual]

Return the order in $\alpha_S$ in which this matrix element is given.

Returns .

Reimplemented from ThePEG::ME2to2QCD.

virtual unsigned int ThePEG::MEee2gZ2qq::orderInAlphaEW (  )  const [virtual]

Return the order in $\alpha_{EM}$ in which this matrix element is given.

Returns 2.

Reimplemented from ThePEG::ME2to2QCD.

virtual double ThePEG::MEee2gZ2qq::me2 (  )  const [virtual]

The matrix element for the kinematical configuration previously provided by the last call to setKinematics(), suitably scaled by sHat() to give a dimension-less number.

Returns:
the matrix element scaled with sHat() to give a dimensionless number.

Implements ThePEG::MEBase.

virtual Selector<const ColourLines *> ThePEG::MEee2gZ2qq::colourGeometries ( tcDiagPtr  diag  )  const [virtual]

Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities.

Parameters:
diag the diagram chosen.
Returns:
the possible colour geometries weighted by their relative probabilities.

Implements ThePEG::MEBase.

virtual Selector<DiagramIndex> ThePEG::MEee2gZ2qq::diagrams ( const DiagramVector dv  )  const [virtual]

Get diagram selector.

With the information previously supplied with the setKinematics method, a derived class may optionally override this method to weight the given diagrams with their (although certainly not physical) relative probabilities.

Parameters:
dv the diagrams to be weighted.
Returns:
a Selector relating the given diagrams to their weights.

Reimplemented from ThePEG::MEBase.

void ThePEG::MEee2gZ2qq::persistentOutput ( PersistentOStream os  )  const

Function used to write out object persistently.

Parameters:
os the persistent output stream written to.

Reimplemented from ThePEG::ME2to2QCD.

void ThePEG::MEee2gZ2qq::persistentInput ( PersistentIStream is,
int  version 
)

Function used to read in object persistently.

Parameters:
is the persistent input stream read from.
version the version number of the object when written.

Reimplemented from ThePEG::ME2to2QCD.

virtual IBPtr ThePEG::MEee2gZ2qq::clone (  )  const [protected, virtual]

Make a simple clone of this object.

Returns:
a pointer to the new object.

Implements ThePEG::InterfacedBase.

virtual IBPtr ThePEG::MEee2gZ2qq::fullclone (  )  const [protected, virtual]

Make a clone of this object, possibly modifying the cloned object to make it sane.

Returns:
a pointer to the new object.

Reimplemented from ThePEG::InterfacedBase.

virtual void ThePEG::MEee2gZ2qq::doinit (  )  [protected, virtual]

Initialize this object after the setup phase before saving an EventGenerator to disk.

Exceptions:
InitException if object could not be initialized properly.

Reimplemented from ThePEG::InterfacedBase.


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

Generated on Thu Apr 29 12:43:11 2010 for ThePEG by  doxygen 1.5.5