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

The WeakToHadronsDecayer class inherits from QuarksToHadronsDecayer and can performs weak decays of taus and charmed and bottom hadrons. More...

#include <WeakToHadronsDecayer.h>

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

Public Member Functions

Virtual functions required by the Decayer and
virtual bool accept (const DecayMode &dm) const
 Check if this decayer can perfom the decay specified by the given decay mode.
virtual double reweight (const Particle &parent, const PVector &children) const
 Called by QuarksToHadronsDecayer::distribute() to reweight the default flat phase spece.
virtual PVector getHadrons (int Nh, tcPDVector quarks) const
 Produce Nh hadrons from the specified quarks.
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.
- Public Member Functions inherited from ThePEG::QuarksToHadronsDecayer
virtual int getN (Energy m0, Energy summq, int Nq) const
 Get the number of hadrons to be produced, given the mass of the decaying particle, m0, and the number, Nq and summed masses of the quarks, summq.
virtual void distribute (const Particle &parent, PVector &children) const
 Distribute the produced children in phase space.
int fixedN () const
 Return the fixed number of hadrons to be produced.
int minN () const
 Return the minimum number of hadrons to be produced.
double c1 () const
 Return the parameter $c_1$ used for the multiplicity distriution.
Energy c2 () const
 Return the parameter $c_2$ used for the multiplicity distriution.
double c3 () const
 Return the parameter $c_3$ used for the multiplicity distriution.
tcFlavGenPtr flavourGenerator () const
 Return a pointer to the flavour generator to be used.
 QuarksToHadronsDecayer ()
 Default constructor.
virtual ~QuarksToHadronsDecayer ()
 Destructor.
virtual ParticleVector decay (const DecayMode &dm, const Particle &p) const
 Perform a decay for a given DecayMode and a given Particle instance.
- 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

WeakToHadronsDecayeroperator= (const WeakToHadronsDecayer &)
 Private and non-existent assignment operator.

Static Private Attributes

static ClassDescription
< WeakToHadronsDecayer
initWeakToHadronsDecayer
 Describe a concrete class with persistent data.

Detailed Description

The WeakToHadronsDecayer class inherits from QuarksToHadronsDecayer and can performs weak decays of taus and charmed and bottom hadrons.

The intermediate W can either decay leptonically in which case standard V-A matrix element is used, or it can decay into quarks in which case the conversion into quarks is performed as for the QuarkToHadronsDecayer base class. In both cases the W decay products should be specified first. The spectator system can either be specified in terms of hadrons or in terms of quarks which will be collapsed into a single hadron.

See also:
The interfaces defined for WeakToHadronsDecayer.

Definition at line 31 of file WeakToHadronsDecayer.h.


Member Function Documentation

virtual bool ThePEG::WeakToHadronsDecayer::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::QuarksToHadronsDecayer.

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

Make a simple clone of this object.

Returns:
a pointer to the new object.

Reimplemented from ThePEG::QuarksToHadronsDecayer.

virtual IBPtr ThePEG::WeakToHadronsDecayer::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::QuarksToHadronsDecayer.

virtual PVector ThePEG::WeakToHadronsDecayer::getHadrons ( int  Nh,
tcPDVector  quarks 
) const
virtual

Produce Nh hadrons from the specified quarks.

The last quark is considered to be a spectator quark.

Reimplemented from ThePEG::QuarksToHadronsDecayer.

void ThePEG::WeakToHadronsDecayer::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::QuarksToHadronsDecayer.

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

Function used to write out object persistently.

Parameters:
osthe persistent output stream written to.

Reimplemented from ThePEG::QuarksToHadronsDecayer.

virtual double ThePEG::WeakToHadronsDecayer::reweight ( const Particle parent,
const PVector children 
) const
virtual

Called by QuarksToHadronsDecayer::distribute() to reweight the default flat phase spece.

Can be overridden by sub-classes and should return a number between 0 and 1. This version returns 1.

Reimplemented from ThePEG::QuarksToHadronsDecayer.


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