Herwig++
2.7.0
|
The MEMinBias class provides a simple colour singlet exchange matrix element to be used in the soft component of the multiple scattering model of the underlying event. More...
#include <MEMinBias.h>
Public Member Functions | |
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. | |
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. | |
Private Member Functions | |
MEMinBias & | operator= (const MEMinBias &) |
The assignment operator is private and must never be called. | |
Static Private Attributes | |
static ClassDescription < MEMinBias > | initMEMinBias |
The static object used to initialize the description of this class. |
The MEMinBias class provides a simple colour singlet exchange matrix element to be used in the soft component of the multiple scattering model of the underlying event.
Definition at line 22 of file MEMinBias.h.
virtual IBPtr Herwig::MEMinBias::clone | ( | ) | const [protected, virtual] |
Make a simple clone of this object.
Implements ThePEG::InterfacedBase.
virtual Selector<const ColourLines *> Herwig::MEMinBias::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::MEMinBias::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 IBPtr Herwig::MEMinBias::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::MEMinBias::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.
static void Herwig::MEMinBias::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::MEMinBias::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.
virtual void Herwig::MEMinBias::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.
ClassDescription<MEMinBias> Herwig::MEMinBias::initMEMinBias [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 150 of file MEMinBias.h.