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Herwig  7.1.4
Herwig::ShowerAlphaQED Class Reference

This concrete class provides the definition of the pure virtual function value(scale) for $\alpha_{\rm QED}$. More...

#include <ShowerAlphaQED.h>

Inheritance diagram for Herwig::ShowerAlphaQED:

Public Member Functions

Standard constructors and destructors.
 ShowerAlphaQED ()
 The default constructor.
 
virtual double value (const Energy2 scale) const
 Methods to return the coupling. More...
 
virtual double overestimateValue () const
 It returns the overestimiate of the coupling multiplied by the scale factor scaleFactor().
 
virtual double ratio (const Energy2 scale, double factor=1.) const
 Return the ratio of the coupling at the scale to the overestimated value.
 
Functions used by the persistent I/O system.
void persistentOutput (PersistentOStream &os) const
 Function used to write out object persistently. More...
 
void persistentInput (PersistentIStream &is, int version)
 Function used to read in object persistently. More...
 
- Public Member Functions inherited from Herwig::ShowerAlpha
 ShowerAlpha ()
 The default constructor.
 
double scaleFactor () const
 It returns the factor that multiplies the scale argument, $\mu^2$, of the running coupling. More...
 
virtual void initialize ()
 Initialize this coupling.
 
void persistentOutput (PersistentOStream &os) const
 Function used to write out object persistently. More...
 
void persistentInput (PersistentIStream &is, int version)
 Function used to read in object persistently. More...
 
- Public Member Functions inherited from ThePEG::Interfaced
virtual bool defaultInit ()
 
PPtr getParticle (PID) const
 
PDPtr getParticleData (PID) const
 
bool used () const
 
void useMe () const
 
tEGPtr generator () const
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
PPtr getParticle (PID) const
 
PDPtr getParticleData (PID) const
 
bool used () const
 
void useMe () const
 
tEGPtr generator () const
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
- Public Member Functions inherited from ThePEG::InterfacedBase
string fullName () const
 
string name () const
 
string path () const
 
string comment () const
 
void setup (istream &is)
 
virtual void debugme () const
 
void update ()
 
void init ()
 
virtual bool preInitialize () const
 
void initrun ()
 
void finish ()
 
void touch ()
 
void reset ()
 
void clear ()
 
InitState state () const
 
bool locked () const
 
bool touched () const
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
void update ()
 
void init ()
 
virtual bool preInitialize () const
 
void initrun ()
 
void finish ()
 
void touch ()
 
void reset ()
 
void clear ()
 
InitState state () const
 
bool locked () const
 
bool touched () const
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
- Public Member Functions inherited from ThePEG::Base
void debug () const
 
- Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType referenceCount () const
 
- Public Member Functions inherited from ThePEG::Named
 Named (const string &newName=string())
 
const string & name () const
 
bool operator== (const Named &other) const
 
bool operator< (const Named &other) const
 

Static Public Member Functions

static void Init ()
 The standard Init function used to initialize the interfaces. More...
 
- Static Public Member Functions inherited from Herwig::ShowerAlpha
static void Init ()
 The standard Init function used to initialize the interfaces. More...
 
- Static Public Member Functions inherited from ThePEG::Interfaced
static void Init ()
 
- Static Public Member Functions inherited from ThePEG::InterfacedBase
static void Init ()
 
- Static Public Member Functions inherited from ThePEG::Base
static void Init ()
 

Protected Member Functions

virtual void doinit ()
 Initialize this object after the setup phase before saving an EventGenerator to disk. More...
 
Clone Methods.
virtual IBPtr clone () const
 Make a simple clone of this object. More...
 
virtual IBPtr fullclone () const
 Make a clone of this object, possibly modifying the cloned object to make it sane. More...
 
- Protected Member Functions inherited from ThePEG::Interfaced
void reporeg (IBPtr object, string name) const
 
bool setDefaultReference (PtrT &ptr, string classname, string objectname)
 
 Interfaced (const string &newName)
 
 Interfaced (const Interfaced &i)
 
void setGenerator (tEGPtr generator)
 
- Protected Member Functions inherited from ThePEG::InterfacedBase
 InterfacedBase (string newName)
 
 InterfacedBase (const InterfacedBase &i)
 
virtual void readSetup (istream &is)
 
virtual void doupdate ()
 
virtual void doinitrun ()
 
virtual void dofinish ()
 
virtual IVector getReferences ()
 
virtual void rebind (const TranslationMap &)
 
virtual void readSetup (istream &is)
 
virtual void doupdate ()
 
virtual void doinitrun ()
 
virtual void dofinish ()
 
virtual IVector getReferences ()
 
virtual void rebind (const TranslationMap &)
 
- Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
 ReferenceCounted (const ReferenceCounted &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
 ReferenceCounted (const ReferenceCounted &)
 
ReferenceCountedoperator= (const ReferenceCounted &)
 
- Protected Member Functions inherited from ThePEG::Named
const Namedoperator= (const Named &other)
 
const string & name (const string &newName)
 

Private Member Functions

ShowerAlphaQEDoperator= (const ShowerAlphaQED &)
 The assignment operator is private and must never be called. More...
 

Private Attributes

double _alpha
 The value of the coupling, as we are producing real photons this is always $\alpha(q^2=0)$.
 

Static Private Attributes

static ClassDescription< ShowerAlphaQEDinitShowerAlphaQED
 The static object used to initialize the description of this class. More...
 

Additional Inherited Members

- Public Types inherited from ThePEG::InterfacedBase
enum  InitState
 
- Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int CounterType
 
- Public Attributes inherited from ThePEG::InterfacedBase
 initializing
 
 uninitialized
 
 initialized
 
 runready
 
- Public Attributes inherited from ThePEG::Pointer::ReferenceCounted
const unsigned long uniqueId
 
- Static Protected Member Functions inherited from ThePEG::Interfaced
static void registerRepository (IBPtr)
 
static void registerRepository (IBPtr, string newName)
 

Detailed Description

This concrete class provides the definition of the pure virtual function value(scale) for $\alpha_{\rm QED}$.

N.B. as we always use $\alpha(0)$ for the radiation of photons this class is very simple.

See also
ShowerAlpha
ShowerAlphaQCD
The interfaces defined for ShowerAlphaQED.

Definition at line 34 of file ShowerAlphaQED.h.

Member Function Documentation

◆ clone()

virtual IBPtr Herwig::ShowerAlphaQED::clone ( ) const
inlineprotectedvirtual

Make a simple clone of this object.

Returns
a pointer to the new object.

Implements ThePEG::InterfacedBase.

Definition at line 109 of file ShowerAlphaQED.h.

◆ doinit()

virtual void Herwig::ShowerAlphaQED::doinit ( )
protectedvirtual

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

Exceptions
InitExceptionif object could not be initialized properly.

Reimplemented from ThePEG::InterfacedBase.

◆ fullclone()

virtual IBPtr Herwig::ShowerAlphaQED::fullclone ( ) const
inlineprotectedvirtual

Make a clone of this object, possibly modifying the cloned object to make it sane.

Returns
a pointer to the new object.

Reimplemented from ThePEG::InterfacedBase.

Definition at line 115 of file ShowerAlphaQED.h.

◆ Init()

static void Herwig::ShowerAlphaQED::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.

◆ operator=()

ShowerAlphaQED& Herwig::ShowerAlphaQED::operator= ( const ShowerAlphaQED )
private

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

void Herwig::ShowerAlphaQED::persistentInput ( PersistentIStream is,
int  version 
)

Function used to read in object persistently.

Parameters
isthe persistent input stream read from.
versionthe version number of the object when written.

◆ persistentOutput()

void Herwig::ShowerAlphaQED::persistentOutput ( PersistentOStream os) const

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

◆ value()

virtual double Herwig::ShowerAlphaQED::value ( const Energy2  scale) const
virtual

Methods to return the coupling.

The methods are equivalent to the QCD ones and are necessary to make use of the virtuality of ShowerAlpha at other places. It returns the running coupling value evaluated at the input scale multiplied by the scale factor scaleFactor().

Parameters
scaleThe scale
Returns
The coupling

Implements Herwig::ShowerAlpha.

Member Data Documentation

◆ initShowerAlphaQED

ClassDescription<ShowerAlphaQED> Herwig::ShowerAlphaQED::initShowerAlphaQED
staticprivate

The static object used to initialize the description of this class.

Indicates that this is a concrete class with persistent data.

Definition at line 133 of file ShowerAlphaQED.h.


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