Herwig++
2.7.0
|
The MEee2Z class implements the matrix element for for the testing of spin correlations. More...
#include <MEee2Z.h>
Public Member Functions | |
Virtual functions required by the MEBase class. | |
virtual unsigned int | orderInAlphaS () const |
Return the order in in which this matrix element is given. | |
virtual unsigned int | orderInAlphaEW () const |
Return the order in 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 Energy2 | scale () const |
Return the scale associated with the last set phase space point. | |
virtual void | getDiagrams () const |
Add all possible diagrams with the add() function. | |
virtual Selector< DiagramIndex > | diagrams (const DiagramVector &dv) const |
Get diagram selector. | |
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 void | constructVertex (tSubProPtr) |
Construct the vertex of spin correlations. | |
virtual int | nDim () const |
The number of internal degreed of freedom used in the matrix element. | |
virtual bool | generateKinematics (const double *r) |
Generate internal degrees of freedom given 'nDim()' uniform random numbers in the interval ]0,1[. | |
virtual CrossSection | dSigHatDR () const |
Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics(). | |
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 () |
The standard Init function used to initialize the interfaces. | |
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. | |
Private Member Functions | |
ProductionMatrixElement | HelicityME (vector< SpinorWaveFunction > fin, vector< SpinorBarWaveFunction > ain, vector< VectorWaveFunction > vout, double &me) const |
The matrix element. | |
MEee2Z & | operator= (const MEee2Z &) |
The assignment operator is private and must never be called. | |
Private Attributes | |
AbstractFFVVertexPtr | _theFFZVertex |
Pointer to the Z vertex. | |
Static Private Attributes | |
static ClassDescription< MEee2Z > | initMEee2Z |
The static object used to initialize the description of this class. |
The MEee2Z class implements the matrix element for for the testing of spin correlations.
virtual IBPtr Herwig::MEee2Z::clone | ( | ) | const [inline, protected, virtual] |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
virtual Selector<const ColourLines *> Herwig::MEee2Z::colourGeometries | ( | tcDiagPtr | diag | ) | const [virtual] |
Return a Selector with possible colour geometries for the selected diagram weighted by their relative probabilities.
diag | the diagram chosen. |
Implements ThePEG::MEBase.
virtual Selector<DiagramIndex> Herwig::MEee2Z::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.
dv | the diagrams to be weighted. |
Reimplemented from ThePEG::MEBase.
virtual void Herwig::MEee2Z::doinit | ( | ) | [protected, virtual] |
Initialize this object after the setup phase before saving an EventGenerator to disk.
InitException | if object could not be initialized properly. |
Reimplemented from ThePEG::InterfacedBase.
virtual CrossSection Herwig::MEee2Z::dSigHatDR | ( | ) | const [virtual] |
Return the matrix element for the kinematical configuation previously provided by the last call to setKinematics().
Uses me().
Implements ThePEG::MEBase.
virtual IBPtr Herwig::MEee2Z::fullclone | ( | ) | const [inline, protected, virtual] |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
virtual bool Herwig::MEee2Z::generateKinematics | ( | const double * | r | ) | [virtual] |
Generate internal degrees of freedom given 'nDim()' uniform random numbers in the interval ]0,1[.
To help the phase space generator, the 'dSigHatDR()' should be a smooth function of these numbers, although this is not strictly necessary. Return false if the chosen points failed the kinematical cuts.
Implements ThePEG::MEBase.
ProductionMatrixElement Herwig::MEee2Z::HelicityME | ( | vector< SpinorWaveFunction > | fin, |
vector< SpinorBarWaveFunction > | ain, | ||
vector< VectorWaveFunction > | vout, | ||
double & | me | ||
) | const [private] |
The matrix element.
fin | The spinors for the incoming fermion |
ain | The spinors for the incoming antifermion |
vout | The polarization vectors for the outgoing Z |
me | The spin averaged matrix element |
static void Herwig::MEee2Z::Init | ( | ) | [static] |
The standard Init function used to initialize the interfaces.
Called exactly once for each class by the class description system before the main function starts or when this class is dynamically loaded.
Reimplemented from ThePEG::MEBase.
virtual double Herwig::MEee2Z::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.
Implements ThePEG::MEBase.
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
void Herwig::MEee2Z::persistentInput | ( | PersistentIStream & | is, |
int | version | ||
) |
Function used to read in object persistently.
is | the persistent input stream read from. |
version | the version number of the object when written. |
Reimplemented from ThePEG::MEBase.
void Herwig::MEee2Z::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
Reimplemented from ThePEG::MEBase.
ClassDescription<MEee2Z> Herwig::MEee2Z::initMEee2Z [static, private] |