Herwig++
2.7.0
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The MEqq2gZ2ff class implements the products of Standard Model fermion antifermion pairs via the resonance including photon interference terms.
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#include <MEqq2gZ2ff.h>
Public Member Functions | |
MEqq2gZ2ff () | |
The default constructor. | |
Virtual functions required by the MEBase class. | |
virtual unsigned int | orderInAlphaS () const |
Return the order in ![]() | |
virtual unsigned int | orderInAlphaEW () const |
Return the order in ![]() | |
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. | |
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 | |
double | qqbarME (vector< SpinorWaveFunction > &fin, vector< SpinorBarWaveFunction > &ain, vector< SpinorBarWaveFunction > &fout, vector< SpinorWaveFunction > &aout, bool me) const |
Matrix element for ![]() | |
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 | |
MEqq2gZ2ff & | operator= (const MEqq2gZ2ff &) |
The assignment operator is private and must never be called. | |
Private Attributes | |
ProductionMatrixElement | _me |
Matrix element for spin correlations. | |
AbstractFFVVertexPtr | _theFFZVertex |
Pointer to the vertices for the helicity calculations. | |
AbstractFFVVertexPtr | _theFFPVertex |
Pointer to the photon vertex. | |
tcPDPtr | _z0 |
Pointers to the intermediate resonances. | |
tcPDPtr | _gamma |
Pointer to the photon ParticleData object. | |
int | _minflavour |
Switches to control the particles in the hard process. | |
int | _maxflavour |
Maximum allowed flavour for the incoming quarks. | |
unsigned int | _gammaZ |
Whether to include both ![]() ![]() | |
int | _process |
Which processes to include. | |
Static Private Attributes | |
static ClassDescription < MEqq2gZ2ff > | initMEqq2gZ2ff |
The static object used to initialize the description of this class. |
The MEqq2gZ2ff class implements the products of Standard Model fermion antifermion pairs via the resonance including photon interference terms.
Definition at line 34 of file MEqq2gZ2ff.h.
virtual IBPtr Herwig::MEqq2gZ2ff::clone | ( | ) | const [inline, protected, virtual] |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
Reimplemented in Herwig::MEqq2gZ2ffPowheg.
Definition at line 153 of file MEqq2gZ2ff.h.
virtual Selector<const ColourLines *> Herwig::MEqq2gZ2ff::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::MEqq2gZ2ff::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::MEqq2gZ2ff::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 Herwig::DrellYanBase.
Reimplemented in Herwig::MEqq2gZ2ffPowheg.
virtual IBPtr Herwig::MEqq2gZ2ff::fullclone | ( | ) | const [inline, protected, virtual] |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
Reimplemented in Herwig::MEqq2gZ2ffPowheg.
Definition at line 159 of file MEqq2gZ2ff.h.
static void Herwig::MEqq2gZ2ff::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 Herwig::DrellYanBase.
Reimplemented in Herwig::MEqq2gZ2ffPowheg.
virtual double Herwig::MEqq2gZ2ff::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.
MEqq2gZ2ff& Herwig::MEqq2gZ2ff::operator= | ( | const MEqq2gZ2ff & | ) | [private] |
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
void Herwig::MEqq2gZ2ff::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 Herwig::DrellYanBase.
Reimplemented in Herwig::MEqq2gZ2ffPowheg.
void Herwig::MEqq2gZ2ff::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
Reimplemented from Herwig::DrellYanBase.
Reimplemented in Herwig::MEqq2gZ2ffPowheg.
double Herwig::MEqq2gZ2ff::qqbarME | ( | vector< SpinorWaveFunction > & | fin, |
vector< SpinorBarWaveFunction > & | ain, | ||
vector< SpinorBarWaveFunction > & | fout, | ||
vector< SpinorWaveFunction > & | aout, | ||
bool | me | ||
) | const [protected] |
Matrix element for .
fin | Spinors for incoming quark |
ain | Spinors for incoming antiquark |
fout | Spinors for incoming quark |
aout | Spinors for incoming antiquark |
me | Whether or not to calculate the matrix element for spin correlations |
int Herwig::MEqq2gZ2ff::_minflavour [private] |
Switches to control the particles in the hard process.
Minimum allowed flavour for the incoming quarks
Definition at line 227 of file MEqq2gZ2ff.h.
Pointer to the vertices for the helicity calculations.
Pointer to the Z vertex
Definition at line 197 of file MEqq2gZ2ff.h.
tcPDPtr Herwig::MEqq2gZ2ff::_z0 [private] |
Pointers to the intermediate resonances.
Pointer to the Z ParticleData object
Definition at line 212 of file MEqq2gZ2ff.h.
ClassDescription<MEqq2gZ2ff> Herwig::MEqq2gZ2ff::initMEqq2gZ2ff [static, private] |
The static object used to initialize the description of this class.
Indicates that this is a concrete class with persistent data.
Definition at line 180 of file MEqq2gZ2ff.h.