ThePEG::AlphaSBase Class Reference

AlphaSBase is an abstract base class used by the StandardModelBase to implement the QCD coupling, $\alpha_S$ . More...

#include <AlphaSBase.h>

Inheritance diagram for ThePEG::AlphaSBase:

List of all members.

Public Member Functions

Virtual functions to be overridden by sub-classes.

virtual vector< Energy2 > flavourThresholds () const =0

Return the flavour thresholds used.

virtual vector< Energy > LambdaQCDs () const =0

Return the $\Lambda_{QCD}$ used for different numbers of active flavours.

Access information about number of flavours and

$\Lambda_{QCD}$ .

unsigned int Nf (Energy2 scale) const

Return the number of avtive quark flavours.

Energy LambdaQCD (unsigned int nflav) const

Return the $\Lambda_{QCD}$ used for nflav active flavours.

Energy LambdaQCD (Energy2 scale) const

Return the $\Lambda_{QCD}$ used for corresponding given scale.

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 ()

Standard Init function used to initialize the interface.

Protected Member Functions

Standard Interfaced functions.

virtual void doinit ()

Initialize this object after the setup phase before saving an EventGenerator to disk.

Private Member Functions

AlphaSBase & operator= (const AlphaSBase &)

Private and non-existent assignment operator.

Private Attributes

vector< Energy2 > theFlavourThresholds

Flavour thresholds, set from the virtual functions in the initialization.

vector< Energy > theLambdaQCDs

The values of $\Lambda_{QCD}$ corresponding to theFlavourThresholds, set from the virtual functions in the initialization.

Static Private Attributes

static
AbstractClassDescription
< AlphaSBase > initAlphaSBase

Describe an abstract class with persistent data.

Detailed Description

AlphaSBase is an abstract base class used by the StandardModelBase to implement the QCD coupling, $\alpha_S$ .

The AlphaSBase also encodes the number of active flavours at a given scale and the $\Lambda_{QCD}$ for a given number of active flavours or for a given scale.

See also:: The interfaces defined for AlphaSBase.
StandardModelBase

Definition at line 28 of file AlphaSBase.h.

Member Function Documentation

virtual vector<Energy2> ThePEG::AlphaSBase::flavourThresholds ( ) const [pure virtual]

Return the flavour thresholds used.

The returned vector contains (in position i) the scales when the active number of flavours changes from i to i+1.

Implemented in ThePEG::O1AlphaS.

void ThePEG::AlphaSBase::persistentOutput ( PersistentOStream & os ) const

Function used to write out object persistently.

Parameters:

os

the persistent output stream written to.

Reimplemented from ThePEG::RunningCoupling.

Reimplemented in ThePEG::O1AlphaS.

void ThePEG::AlphaSBase::persistentInput	(	PersistentIStream &	is,
		int	version
	)

Function used to read in object persistently.

Parameters:

	is	the persistent input stream read from.
	version	the version number of the object when written.

Reimplemented from ThePEG::RunningCoupling.

Reimplemented in ThePEG::O1AlphaS.

virtual void ThePEG::AlphaSBase::doinit ( ) [protected, virtual]

Initialize this object after the setup phase before saving an EventGenerator to disk.

Exceptions:

InitException

if object could not be initialized properly.

Reimplemented from ThePEG::InterfacedBase.

The documentation for this class was generated from the following file:

AlphaSBase.h


Public Member Functions
Virtual functions to be overridden by sub-classes.
virtual vector< Energy2 >	flavourThresholds () const =0
	Return the flavour thresholds used.
virtual vector< Energy >	LambdaQCDs () const =0
	Return the $\Lambda_{QCD}$ used for different numbers of active flavours.
Access information about number of flavours and
$\Lambda_{QCD}$ .
unsigned int	Nf (Energy2 scale) const
	Return the number of avtive quark flavours.
Energy	LambdaQCD (unsigned int nflav) const
	Return the $\Lambda_{QCD}$ used for nflav active flavours.
Energy	LambdaQCD (Energy2 scale) const
	Return the $\Lambda_{QCD}$ used for corresponding given scale.
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 ()
	Standard Init function used to initialize the interface.
Protected Member Functions
Standard Interfaced functions.
virtual void	doinit ()
	Initialize this object after the setup phase before saving an EventGenerator to disk.
Private Member Functions
AlphaSBase &	operator= (const AlphaSBase &)
	Private and non-existent assignment operator.
Private Attributes
vector< Energy2 >	theFlavourThresholds
	Flavour thresholds, set from the virtual functions in the initialization.
vector< Energy >	theLambdaQCDs
	The values of $\Lambda_{QCD}$ corresponding to theFlavourThresholds, set from the virtual functions in the initialization.
Static Private Attributes
static AbstractClassDescription < AlphaSBase >	initAlphaSBase
	Describe an abstract class with persistent data.