Herwig++
2.7.0
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The MEfftoffH class is the base class for vector boson fusion type processes in Herwig++. More...
#include <MEfftoffH.h>
Public Member Functions | |
MEfftoffH () | |
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 | setKinematics () |
Set the typed and momenta of the incoming and outgoing partons to be used in subsequent calls to me() and colourGeometries() according to the associated XComb object. | |
virtual int | nDim () const |
The number of internal degrees 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 ![]() | |
virtual CrossSection | dSigHatDR () const |
Return the matrix element squared differential in the variables given by the last call to generateKinematics(). | |
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 | helicityME (vector< SpinorWaveFunction > &f1, vector< SpinorWaveFunction > &f2, vector< SpinorBarWaveFunction > &a1, vector< SpinorBarWaveFunction > &a2, bool swap1, bool swap2, bool me) const |
Matrix element for ![]() | |
void | setWWHVertex (AbstractVVSVertexPtr in) |
Set the pointer to the vector-vector-Higgs vertex. | |
void | lineShape (unsigned int in) |
Set the line shape treatment. | |
unsigned int | process () const |
Which process to generate. | |
bool | swapOrder () |
Whether momenta are swapped. | |
void | process (unsigned int in) |
Which process to generate. | |
unsigned int | maxFlavour () const |
Maximum flavour of the incoming partons. | |
unsigned int | minFlavour () const |
Minimum flavour of the incoming partons. | |
PDPtr | WPlus () const |
Access to the vector ParticleData objects. | |
PDPtr | WMinus () const |
Access to the ![]() | |
PDPtr | Z0 () const |
Access to the ![]() | |
PDPtr | higgs () const |
Access to the Higgs boson. | |
void | higgs (PDPtr in) |
Set the Higgs boson. | |
Standard Interfaced functions. | |
virtual void | doinit () |
Initialize this object after the setup phase before saving an EventGenerator to disk. | |
Private Member Functions | |
MEfftoffH & | operator= (const MEfftoffH &) |
The assignment operator is private and must never be called. | |
Private Attributes | |
unsigned int | _shapeopt |
Defines the Higgs resonance shape. | |
unsigned int | _maxflavour |
Maximum flavour of the quarks involved. | |
unsigned int | _minflavour |
Minimum flavour of the quarks involved. | |
unsigned int | _process |
Whether to include $WW$ and $ZZ$ processes or both. | |
Energy | _mh |
On-shell mass for the higgs. | |
Energy | _wh |
On-shell width for the higgs. | |
GenericMassGeneratorPtr | _hmass |
The mass generator for the Higgs. | |
ProductionMatrixElement | _me |
Matrix element for spin correlations. | |
bool | _swap |
if order swaped | |
PDPtr | _wplus |
The intermediate vector bosons. | |
PDPtr | _wminus |
![]() | |
PDPtr | _z0 |
![]() | |
PDPtr | _higgs |
Higgs boson. | |
AbstractFFVVertexPtr | _vertexFFW |
The vertices for the calculation of the matrix element. | |
AbstractFFVVertexPtr | _vertexFFZ |
Vertex for fermion-fermion-Z. | |
AbstractVVSVertexPtr | _vertexWWH |
Vertex for vector-vector-Higgs. | |
Static Private Attributes | |
static AbstractClassDescription < MEfftoffH > | initMEfftoffH |
The static object used to initialize the description of this class. |
The MEfftoffH class is the base class for vector boson fusion type processes in Herwig++.
Definition at line 25 of file MEfftoffH.h.
virtual Selector<const ColourLines *> Herwig::MEfftoffH::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::MEfftoffH::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::MEfftoffH::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.
Reimplemented in Herwig::MEPP2HiggsVBF, Herwig::MEPP2HiggsVBFPowheg, and Herwig::MEee2HiggsVBF.
virtual bool Herwig::MEfftoffH::generateKinematics | ( | const double * | r | ) | [virtual] |
Generate internal degrees of freedom given nDim() uniform random numbers in the interval .
To help the phase space generator, the dSigHatDR should be a smooth function of these numbers, although this is not strictly necessary.
r | a pointer to the first of nDim() consecutive random numbers. |
Reimplemented from Herwig::HwMEBase.
Reimplemented in Herwig::MEPP2HiggsVBFPowheg.
double Herwig::MEfftoffH::helicityME | ( | vector< SpinorWaveFunction > & | f1, |
vector< SpinorWaveFunction > & | f2, | ||
vector< SpinorBarWaveFunction > & | a1, | ||
vector< SpinorBarWaveFunction > & | a2, | ||
bool | swap1, | ||
bool | swap2, | ||
bool | me | ||
) | const [protected] |
Matrix element for .
f1 | Spinors for first incoming fermion |
f2 | Spinors for second incoming fermion |
a1 | Spinors for first outgoing fermion |
a2 | Spinors for second outgoing fermion |
swap1 | Whether or not to swap the order for the first fermion line |
swap2 | Whether or not to swap the order for the second fermion line |
me | Whether or not to calculate the matrix element for spin correlations |
static void Herwig::MEfftoffH::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::HwMEBase.
Reimplemented in Herwig::MEPP2HiggsVBF, Herwig::MEPP2HiggsVBFPowheg, Herwig::GeneralfftoffH, and Herwig::MEee2HiggsVBF.
virtual double Herwig::MEfftoffH::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::MEfftoffH::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::HwMEBase.
Reimplemented in Herwig::MEPP2HiggsVBF, Herwig::MEPP2HiggsVBFPowheg, and Herwig::GeneralfftoffH.
void Herwig::MEfftoffH::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
Reimplemented from Herwig::HwMEBase.
Reimplemented in Herwig::MEPP2HiggsVBF, Herwig::MEPP2HiggsVBFPowheg, and Herwig::GeneralfftoffH.
virtual void Herwig::MEfftoffH::setKinematics | ( | ) | [virtual] |
Set the typed and momenta of the incoming and outgoing partons to be used in subsequent calls to me() and colourGeometries() according to the associated XComb object.
If the function is overridden in a sub class the new function must call the base class one first.
Reimplemented from Herwig::HwMEBase.
PDPtr Herwig::MEfftoffH::WPlus | ( | ) | const [inline, protected] |
Access to the vector ParticleData objects.
Access to the data
Definition at line 173 of file MEfftoffH.h.
The vertices for the calculation of the matrix element.
Vertex for fermion-fermion-W
Definition at line 313 of file MEfftoffH.h.
PDPtr Herwig::MEfftoffH::_wplus [private] |
AbstractClassDescription<MEfftoffH> Herwig::MEfftoffH::initMEfftoffH [static, private] |
The static object used to initialize the description of this class.
Indicates that this is an abstract class with persistent data.
Definition at line 251 of file MEfftoffH.h.