ThePEG  1.8.0
Public Member Functions | Static Public Member Functions | Private Member Functions | Private Attributes | Static Private Attributes
ThePEG::Onium3GDecayer Class Reference

The Onium3GDecayer class inherits from performs FlatDecayer and will reweight the flat phase space suitable to describe the decay of a spin-1 onium resonance into three gluons or two gluons and a photon. More...

#include <Onium3GDecayer.h>

Inheritance diagram for ThePEG::Onium3GDecayer:
Inheritance graph
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List of all members.

Public Member Functions

bool shower () const
 Return true if the produced gluons should be showered.
Energy minGGMass () const
 Return the minimum invariant mass between two gluons in gamma-g-g decays.
Standard constructors and destructors.
 Onium3GDecayer ()
 Default constructor.
virtual ~Onium3GDecayer ()
 Destructor.
Virtual functions required by the Decayer class.
virtual bool accept (const DecayMode &dm) const
 Check if this decayer can perfom the decay specified by the given decay mode.
virtual ParticleVector decay (const DecayMode &dm, const Particle &p) const
 Perform a decay for a given DecayMode and a given Particle instance.
virtual double reweight (const DecayMode &dm, const Particle &parent, const ParticleVector &children) const
 Give a weight to a phase space point.
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.
Virtual functions required by the Decayer class.
- Public Member Functions inherited from ThePEG::Decayer
Ptr< Amplitude >::pointer amplitude () const
 Return an amplitude associated with this decay matrix element.
virtual bool needsFullStep () const
 Return true if this Decayer need to access the full current step when a particle is decayed.
virtual ParticleVector decay (const DecayMode &dm, const Particle &p, Step &step) const
 Perform a decay for a given DecayMode and a given Particle instance.
virtual double brat (const DecayMode &dm, const ParticleData &pd, double oldbrat) const
 Calculate branching ratio.
virtual double brat (const DecayMode &dm, const Particle &p, double oldbrat) const
 Calculate branching ratio.
virtual ParticleVector getChildren (const DecayMode &dm, const Particle &parent) const
 Produce the children.
virtual void finalBoost (const Particle &parent, const ParticleVector &children) const
 Boost the decay products.
virtual void setScales (const Particle &parent, const ParticleVector &children) const
 Set the scales.

Static Public Member Functions

static void Init ()
 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.
Clone Methods.

Private Member Functions

Onium3GDecayeroperator= (const Onium3GDecayer &)
 Private and non-existent assignment operator.

Private Attributes

bool doShower
 If true the produced gluons should be showered.
Energy theMinGGMass
 The minimum invariant mass between two gluons in gamma-g-g decays.

Static Private Attributes

static ClassDescription
< Onium3GDecayer
initOnium3GDecayer
 Describe a concrete class with persistent data.

Detailed Description

The Onium3GDecayer class inherits from performs FlatDecayer and will reweight the flat phase space suitable to describe the decay of a spin-1 onium resonance into three gluons or two gluons and a photon.

After the decay the collision handler is instructed to restart the generation from the hadronization (or optionally the parton cascade) stage.

See also:
The interfaces defined for Onium3GDecayer.
FlatDecayer
ParticleData

Definition at line 30 of file Onium3GDecayer.h.


Member Function Documentation

virtual bool ThePEG::Onium3GDecayer::accept ( const DecayMode dm) const
virtual

Check if this decayer can perfom the decay specified by the given decay mode.

Parameters:
dmthe DecayMode describing the decay.
Returns:
true if this decayer can handle the given mode, otherwise false.

Reimplemented from ThePEG::FlatDecayer.

virtual IBPtr ThePEG::Onium3GDecayer::clone ( ) const
protectedvirtual

Make a simple clone of this object.

Returns:
a pointer to the new object.

Reimplemented from ThePEG::FlatDecayer.

virtual ParticleVector ThePEG::Onium3GDecayer::decay ( const DecayMode dm,
const Particle p 
) const
virtual

Perform a decay for a given DecayMode and a given Particle instance.

Parameters:
dmthe DecayMode describing the decay.
pthe Particle instance to be decayed.
Returns:
a ParticleVector containing the decay products.

Reimplemented from ThePEG::FlatDecayer.

virtual IBPtr ThePEG::Onium3GDecayer::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::FlatDecayer.

void ThePEG::Onium3GDecayer::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.

Reimplemented from ThePEG::Decayer.

void ThePEG::Onium3GDecayer::persistentOutput ( PersistentOStream os) const

Function used to write out object persistently.

Parameters:
osthe persistent output stream written to.

Reimplemented from ThePEG::Decayer.

virtual double ThePEG::Onium3GDecayer::reweight ( const DecayMode dm,
const Particle parent,
const ParticleVector children 
) const
virtual

Give a weight to a phase space point.

To be overridden by subclasses. For a given decay mode, dm, decaying parent particle and decayproducts, children, distributed according to a flat distribution in phase space, return a weight (less or equal to unity) modifying the flat distribution to the desired one. Note that the chosen phase space point may be rejected, but the chosen decay channel will not. This means that the weight returned by this function does not influence the branching ratios.

Reimplemented from ThePEG::FlatDecayer.


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