Herwig++
2.7.0
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The MEPP2QQHiggs class implements the matrix elements for and
.
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#include <MEPP2QQHiggs.h>
Public Member Functions | |
Standard constructors and destructors. | |
MEPP2QQHiggs () | |
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 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 | ggME (vector< VectorWaveFunction > &g1, vector< VectorWaveFunction > &g2, vector< SpinorBarWaveFunction > &q, vector< SpinorWaveFunction > &qbar, ScalarWaveFunction &h, unsigned int flow) const |
Members to calculate the matrix elements. | |
double | qqME (vector< SpinorWaveFunction > &q1, vector< SpinorBarWaveFunction > &q2, vector< SpinorBarWaveFunction > &q3, vector< SpinorWaveFunction > &q4, ScalarWaveFunction &h, unsigned int flow) 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 | |
MEPP2QQHiggs & | operator= (const MEPP2QQHiggs &) |
The assignment operator is private and must never be called. | |
Private Attributes | |
unsigned int | flow_ |
Colour flow. | |
unsigned int | diagram_ |
Diagram. | |
ProductionMatrixElement | me_ |
Matrix element. | |
unsigned int | quarkFlavour_ |
Switches to control the subprocess. | |
unsigned int | process_ |
Processes to include. | |
unsigned int | shapeOpt_ |
Switches etc for the Higgs mass generation. | |
Energy | mh_ |
On-shell mass for the higgs. | |
Energy | wh_ |
On-shell width for the higgs. | |
GenericMassGeneratorPtr | hmass_ |
The mass generator for the Higgs. | |
AbstractVVVVertexPtr | GGGVertex_ |
Vertices needed to compute the diagrams. | |
AbstractFFVVertexPtr | QQGVertex_ |
![]() | |
AbstractFFSVertexPtr | QQHVertex_ |
![]() | |
PDPtr | gluon_ |
ParticleData objects of the particles. | |
PDPtr | higgs_ |
The Higgs boson. | |
vector< PDPtr > | quark_ |
the quarks | |
vector< PDPtr > | antiquark_ |
the antiquarks | |
double | alpha_ |
Parameters for the phase-space generation. | |
Static Private Attributes | |
static ClassDescription < MEPP2QQHiggs > | initMEPP2QQHiggs |
The static object used to initialize the description of this class. |
The MEPP2QQHiggs class implements the matrix elements for and
.
Definition at line 30 of file MEPP2QQHiggs.h.
virtual IBPtr Herwig::MEPP2QQHiggs::clone | ( | ) | const [protected, virtual] |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
virtual Selector<const ColourLines *> Herwig::MEPP2QQHiggs::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::MEPP2QQHiggs::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::MEPP2QQHiggs::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 IBPtr Herwig::MEPP2QQHiggs::fullclone | ( | ) | const [protected, virtual] |
Make a clone of this object, possibly modifying the cloned object to make it sane.
Reimplemented from ThePEG::InterfacedBase.
virtual bool Herwig::MEPP2QQHiggs::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.
double Herwig::MEPP2QQHiggs::ggME | ( | vector< VectorWaveFunction > & | g1, |
vector< VectorWaveFunction > & | g2, | ||
vector< SpinorBarWaveFunction > & | q, | ||
vector< SpinorWaveFunction > & | qbar, | ||
ScalarWaveFunction & | h, | ||
unsigned int | flow | ||
) | const [protected] |
Members to calculate the matrix elements.
Matrix element for
g1 | The wavefunctions for the first incoming gluon |
g2 | The wavefunctions for the second incoming gluon |
q | The wavefunction for the outgoing quark |
qbar | The wavefunction for the outgoing antiquark |
h | The wavefunction for the outgoing Higgs boson |
flow | The colour flow |
static void Herwig::MEPP2QQHiggs::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.
virtual double Herwig::MEPP2QQHiggs::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.
MEPP2QQHiggs& Herwig::MEPP2QQHiggs::operator= | ( | const MEPP2QQHiggs & | ) | [private] |
The assignment operator is private and must never be called.
In fact, it should not even be implemented.
void Herwig::MEPP2QQHiggs::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.
void Herwig::MEPP2QQHiggs::persistentOutput | ( | PersistentOStream & | os | ) | const |
Function used to write out object persistently.
os | the persistent output stream written to. |
Reimplemented from Herwig::HwMEBase.
double Herwig::MEPP2QQHiggs::qqME | ( | vector< SpinorWaveFunction > & | q1, |
vector< SpinorBarWaveFunction > & | q2, | ||
vector< SpinorBarWaveFunction > & | q3, | ||
vector< SpinorWaveFunction > & | q4, | ||
ScalarWaveFunction & | h, | ||
unsigned int | flow | ||
) | const [protected] |
Matrix element for .
q1 | The wavefunction for the incoming quark |
q2 | The wavefunction for the incoming antiquark |
q3 | The wavefunction for the outgoing quark |
q4 | The wavefunction for the outgoing antiquark |
h | The wavefunction for the outgoing Higgs boson |
flow | The colour flow |
virtual void Herwig::MEPP2QQHiggs::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.
double Herwig::MEPP2QQHiggs::alpha_ [private] |
Parameters for the phase-space generation.
Power for the phase-space mapping
Definition at line 335 of file MEPP2QQHiggs.h.
PDPtr Herwig::MEPP2QQHiggs::gluon_ [private] |
ClassDescription<MEPP2QQHiggs> Herwig::MEPP2QQHiggs::initMEPP2QQHiggs [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 232 of file MEPP2QQHiggs.h.
unsigned int Herwig::MEPP2QQHiggs::quarkFlavour_ [private] |
unsigned int Herwig::MEPP2QQHiggs::shapeOpt_ [private] |
Switches etc for the Higgs mass generation.
Defines the Higgs resonance shape
Definition at line 264 of file MEPP2QQHiggs.h.