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Herwig 7.3.0
Herwig::IncomingPhotonEvolver Class Reference

The IncomingPhotonEvolver class performs the backward evolution of a photon in a partonic process to a quark or antiquark so that the event can be showered. More...

#include <IncomingPhotonEvolver.h>

Inheritance diagram for Herwig::IncomingPhotonEvolver:

Public Member Functions

Standard constructors and destructors.
 IncomingPhotonEvolver ()
 The default constructor.
 
Virtual functions required by the StepHandler class.
virtual void handle (EventHandler &eh, const tPVector &tagged, const Hint &hint)
 The main function called by the EventHandler class to perform a step.
 
- Public Member Functions inherited from ThePEG::StepHandler
virtual void handle (EventHandler &eh, const tPVector &tagged, const Hint &hint)=0
 
tEHPtr eventHandler () const
 
void eventHandler (tEHPtr)
 
tStepPtr newStep ()
 
tStepPtr currentStep ()
 
virtual void handle (EventHandler &eh, const tPVector &tagged, const Hint &hint)=0
 
- Public Member Functions inherited from ThePEG::HandlerBaseT< UseRandom >
double rnd () const
 
double rnd (double xu) const
 
double rnd (double xl, double xu) const
 
bool rndbool () const
 
bool rndbool (double p) const
 
bool rndbool (double p1, double p2) const
 
int rndsign (double p1, double p2, double p3) const
 
int rnd2 (double p0, double p1) const
 
int rnd3 (double p0, double p1, double p2) const
 
int rnd4 (double p0, double p1, double p2, double p3) const
 
long irnd (long xu=2) const
 
long irnd (long xl, long xu) const
 
const StandardModelBaseSM () const
 
tSMPtr standardModel () const
 
- 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
 
- Public Member Functions inherited from ThePEG::InterfacedBase
string fullName () const
 
string name () const
 
string path () const
 
string comment () const
 
void setup (istream &is)
 
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
 
virtual IBPtr fullclone () const
 
void persistentOutput (PersistentOStream &os) const
 
void persistentInput (PersistentIStream &is, int version)
 
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
 
virtual IBPtr fullclone () const
 
- Public Member Functions inherited from ThePEG::Base
void debug () const
 
virtual void debugme () const
 
- Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType referenceCount () const
 
- Public Member Functions inherited from ThePEG::Named
 Named (const string &newName=string())
 
 Named (const Named &)=default
 
const string & name () const
 
bool operator== (const Named &other) const
 
bool operator< (const Named &other) const
 

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.
 
- Protected Member Functions inherited from ThePEG::StepHandler
void createNewStep ()
 
- 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
virtual void readSetup (istream &is)
 
virtual void doupdate ()
 
virtual void doinit ()
 
virtual void doinitrun ()
 
virtual void dofinish ()
 
virtual IVector getReferences ()
 
virtual void rebind (const TranslationMap &)
 
virtual IBPtr clone () const=0
 
 InterfacedBase (string newName)
 
 InterfacedBase (const InterfacedBase &i)
 
virtual void readSetup (istream &is)
 
virtual void doupdate ()
 
virtual void doinit ()
 
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 &)
 
- Protected Member Functions inherited from ThePEG::Named
const Namedoperator= (const Named &other)
 
const string & name (const string &newName)
 

Standard Interfaced functions.

PDFPtr PDF_
 PDF set to use.
 
double PDFMax_
 The maximum value of the PDF for the sample.
 
double PDFPower_
 The power for the sampling of the PDF.
 
Energy minpT_
 The minimum starting scale for the evolution.
 
Energy minVirtuality_
 The minimum space-like virtuality of the photon.
 
unsigned int vetoTries_
 Maximum number of attempts to generate the scale of the branching.
 
unsigned int virtualityTries_
 Maximum number of attempts to regenerate the virtuality.
 
tcPDPtr photon_
 Photon ParticleData object.
 
vector< tcPDPtrpartons_
 Partons to backward evolve to.
 
virtual void doinit ()
 Initialize this object after the setup phase before saving an EventGenerator to disk.
 
IncomingPhotonEvolveroperator= (const IncomingPhotonEvolver &)=delete
 The assignment operator is private and must never be called.
 

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 void Init ()
 The standard Init function used to initialize the interfaces.
 
double getBeta (const double E, const double q, const double Ep, const double qp) const
 Compute boost parameter along z axis to get (Ep, any perp, qp) from (E, same perp, q).
 

Additional Inherited Members

- Public Types inherited from ThePEG::InterfacedBase
enum  InitState
 
- Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int CounterType
 
- Static Public Member Functions inherited from ThePEG::StepHandler
static void Init ()
 
- Static Public Member Functions inherited from ThePEG::HandlerBase
static void Init ()
 
- 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 ()
 
- 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

The IncomingPhotonEvolver class performs the backward evolution of a photon in a partonic process to a quark or antiquark so that the event can be showered.

See also
The interfaces defined for IncomingPhotonEvolver.

Definition at line 22 of file IncomingPhotonEvolver.h.

Member Function Documentation

◆ clone()

virtual IBPtr Herwig::IncomingPhotonEvolver::clone ( ) const
protectedvirtual

Make a simple clone of this object.

Returns
a pointer to the new object.

Implements ThePEG::InterfacedBase.

◆ doinit()

virtual void Herwig::IncomingPhotonEvolver::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::IncomingPhotonEvolver::fullclone ( ) const
protectedvirtual

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.

◆ getBeta()

double Herwig::IncomingPhotonEvolver::getBeta ( const double  E,
const double  q,
const double  Ep,
const double  qp 
) const
inlineprotected

Compute boost parameter along z axis to get (Ep, any perp, qp) from (E, same perp, q).

Definition at line 89 of file IncomingPhotonEvolver.h.

References ThePEG::sqr().

◆ handle()

virtual void Herwig::IncomingPhotonEvolver::handle ( EventHandler eh,
const tPVector tagged,
const Hint hint 
)
virtual

The main function called by the EventHandler class to perform a step.

Given the current state of an Event, this function performs the event generation step and includes the result in a new Step object int the Event record.

Parameters
ehthe EventHandler in charge of the Event generation.
taggedif not empty these are the only particles which should be considered by the StepHandler.
hinta Hint object with possible information from previously performed steps.
Exceptions
Vetoif the StepHandler requires the current step to be discarded.
Stopif the generation of the current Event should be stopped after this call.
Exceptionif something goes wrong.

Implements ThePEG::StepHandler.

◆ Init()

static void Herwig::IncomingPhotonEvolver::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=()

IncomingPhotonEvolver & Herwig::IncomingPhotonEvolver::operator= ( const IncomingPhotonEvolver )
privatedelete

The assignment operator is private and must never be called.

In fact, it should not even be implemented.

◆ persistentInput()

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

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

Member Data Documentation

◆ minpT_

Energy Herwig::IncomingPhotonEvolver::minpT_
private

The minimum starting scale for the evolution.

Definition at line 149 of file IncomingPhotonEvolver.h.

◆ minVirtuality_

Energy Herwig::IncomingPhotonEvolver::minVirtuality_
private

The minimum space-like virtuality of the photon.

Definition at line 154 of file IncomingPhotonEvolver.h.

◆ partons_

vector<tcPDPtr> Herwig::IncomingPhotonEvolver::partons_
private

Partons to backward evolve to.

Definition at line 175 of file IncomingPhotonEvolver.h.

◆ PDF_

PDFPtr Herwig::IncomingPhotonEvolver::PDF_
private

PDF set to use.

Overrides the one that is associated with the beam particle.

Definition at line 134 of file IncomingPhotonEvolver.h.

◆ PDFMax_

double Herwig::IncomingPhotonEvolver::PDFMax_
private

The maximum value of the PDF for the sample.

Definition at line 139 of file IncomingPhotonEvolver.h.

◆ PDFPower_

double Herwig::IncomingPhotonEvolver::PDFPower_
private

The power for the sampling of the PDF.

Definition at line 144 of file IncomingPhotonEvolver.h.

◆ photon_

tcPDPtr Herwig::IncomingPhotonEvolver::photon_
private

Photon ParticleData object.

Definition at line 170 of file IncomingPhotonEvolver.h.

◆ vetoTries_

unsigned int Herwig::IncomingPhotonEvolver::vetoTries_
private

Maximum number of attempts to generate the scale of the branching.

Definition at line 160 of file IncomingPhotonEvolver.h.

◆ virtualityTries_

unsigned int Herwig::IncomingPhotonEvolver::virtualityTries_
private

Maximum number of attempts to regenerate the virtuality.

Definition at line 165 of file IncomingPhotonEvolver.h.


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