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ThePEG 2.3.0
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:

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.
 
- Public Member Functions inherited from ThePEG::QuarksToHadronsDecayer
 QuarksToHadronsDecayer ()
 Default constructor.
 
virtual ParticleVector decay (const DecayMode &dm, const Particle &p) const
 Perform a decay for a given DecayMode and a given Particle instance.
 
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.
 
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::Decayer
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 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.
 
Ptr< Amplitude >::pointer amplitude () const
 Return an amplitude associated with this decay matrix element.
 
- Public Member Functions inherited from ThePEG::HandlerBaseT< UseRandom >
virtual ~HandlerBaseT ()
 Destructor.
 
double rnd () const
 Return a simple flat random number in the range ]0,1[.
 
double rnd (double xu) const
 Return a simple flat random number in the range ]0,xu[.
 
double rnd (double xl, double xu) const
 Return a simple flat random number in the range ]xl,xu[.
 
bool rndbool () const
 Return true with 50% probability.
 
bool rndbool (double p) const
 Return a true with probability p.
 
bool rndbool (double p1, double p2) const
 Return a true with probability p1/(p1+p2).
 
int rndsign (double p1, double p2, double p3) const
 Return -1, 0, or 1 with relative probabilities p1, p2, p3.
 
int rnd2 (double p0, double p1) const
 Return an integer \(i\) with probability p \(i\)/(p0+p1).
 
int rnd3 (double p0, double p1, double p2) const
 Return an integer \(i\) with probability p \(i\)/(p0+p1+p2).
 
int rnd4 (double p0, double p1, double p2, double p3) const
 Return an integer/ \(i\) with probability p \(i\)(p0+p1+p2+p3).
 
long irnd (long xu=2) const
 Return a simple flat random integrer number in the range [0,xu[.
 
long irnd (long xl, long xu) const
 Return a simple flat random integrer number in the range [xl,xu[.
 
const StandardModelBaseSM () const
 Return a reference to the object containing the standard model parameters for this run.
 
tSMPtr standardModel () const
 Return a pointer to the object containing the standard model parameters for this run.
 
- Public Member Functions inherited from ThePEG::Interfaced
virtual ~Interfaced ()
 Empty virtual destructor.
 
virtual bool defaultInit ()
 Functions which are to be used during the actual event generation, after the setup is complete.
 
PPtr getParticle (PID) const
 Create a new Particle instance given a id number.
 
PDPtr getParticleData (PID) const
 Return a pointer to the ParticleData object corresponding to the given id number.
 
bool used () const
 Returns true if this object has actally been used.
 
void useMe () const
 Should be called to indicate that this object has actually been used.
 
tEGPtr generator () const
 Return a pointer to the EventGenerator controlling the run.
 
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::InterfacedBase
virtual ~InterfacedBase ()
 The virtual (empty) destructor;.
 
string fullName () const
 Returns the full name of this object including its path, e.g.
 
string name () const
 Returns the name of this object, without the path.
 
string path () const
 Returns the path to this object including the trailing '/'.
 
string comment () const
 Returns a comment assigned to this object.
 
void setup (istream &is)
 Read setup info from a standard istream is.
 
void update ()
 Calls the doupdate() function with recursion prevention.
 
void init ()
 Calls the doinit() function with recursion prevention.
 
virtual bool preInitialize () const
 Return true if this object needs to be initialized before all other objects (except those for which this function also returns true).
 
void initrun ()
 Calls the doinitrun() function with recursion prevention.
 
void finish ()
 Calls the dofinish() function with recursion prevention.
 
void touch ()
 This function should be called every time something in this object has changed in a way that a sanity check with update() is needed.
 
void reset ()
 Set the state of this object to uninitialized.
 
void clear ()
 Calls reset() and unTouch().
 
InitState state () const
 Return the state of initialization of this object.
 
bool locked () const
 Return true if the BaseRepository is not allowed to change the state of this object.
 
bool touched () const
 Return true if the state of this object has been changed since the last call to update().
 
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 void debugme () const
 Print out debugging information for this object on std::cerr.
 
- Public Member Functions inherited from ThePEG::Base
virtual ~Base ()
 The virtual destructor.
 
void debug () const
 Print out debugging information for this object on std::cerr.
 
virtual void debugme () const
 Print out debugging information for this object on std::cerr.
 
- Public Member Functions inherited from ThePEG::Pointer::ReferenceCounted
CounterType referenceCount () const
 Return the reference count.
 
- Public Member Functions inherited from ThePEG::Named
 Named (const string &newName=string())
 Constructor with name.
 
 Named (const Named &)=default
 Explicit default copy-constructor (too avoid compiler warnings)
 
const string & name () const
 Return name.
 
bool operator== (const Named &other) const
 Test for equality.
 
bool operator< (const Named &other) const
 Lexicographical comparison.
 

Clone Methods.

static ClassDescription< WeakToHadronsDecayerinitWeakToHadronsDecayer
 Describe a concrete class with persistent data.
 
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.
 
WeakToHadronsDecayeroperator= (const WeakToHadronsDecayer &)=delete
 Private and non-existent assignment operator.
 

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 ()
 Standard Init function used to initialize the interfaces.
 

Additional Inherited Members

- Public Types inherited from ThePEG::InterfacedBase
enum  InitState { initializing = -1 , uninitialized = 0 , initialized = 1 , runready = 2 }
 Enumeration reflecting the state of an InterfacedBase object. More...
 
- Public Types inherited from ThePEG::Pointer::ReferenceCounted
typedef unsigned int CounterType
 The integer type used for counting.
 
- Static Public Member Functions inherited from ThePEG::QuarksToHadronsDecayer
static void Init ()
 Standard Init function used to initialize the interfaces.
 
- Static Public Member Functions inherited from ThePEG::Decayer
static void Init ()
 Standard Init function used to initialize the interfaces.
 
static ParticleVector DecayParticle (tPPtr parent, Step &step, long maxtry=1000)
 Static function to administer the decay of a particle.
 
- Static Public Member Functions inherited from ThePEG::HandlerBase
static void Init ()
 Standard Init function used to initialize the interface.
 
- Static Public Member Functions inherited from ThePEG::Interfaced
static void Init ()
 Standard Init function.
 
- Static Public Member Functions inherited from ThePEG::InterfacedBase
static void Init ()
 Standard Init function.
 
- Static Public Member Functions inherited from ThePEG::Base
static void Init ()
 The standard Init function used to initialize the interfaces.
 
- Public Attributes inherited from ThePEG::Pointer::ReferenceCounted
const unsigned long uniqueId
 The unique ID.
 
- Protected Member Functions inherited from ThePEG::QuarksToHadronsDecayer
- Protected Member Functions inherited from ThePEG::Interfaced
void reporeg (IBPtr object, string name) const
 Register the given object in the Repository with the given name in a subdirectory with the same name as this object.
 
template<typename PtrT >
bool setDefaultReference (PtrT &ptr, string classname, string objectname)
 If the pointer, ptr, to an object is not set, create an object of class classname and register it with the Repository with the given objectname in a sib-directory with the same name as this object.
 
 Interfaced ()
 Protected default constructor.
 
 Interfaced (const string &newName)
 Protected constructor taking a name as argument.
 
 Interfaced (const Interfaced &i)
 Protected copy-constructor.
 
void setGenerator (tEGPtr generator)
 Protected function to reset the generator pointer, required for automatic decayer generation in Herwig++ BSM models.
 
- Protected Member Functions inherited from ThePEG::InterfacedBase
virtual void readSetup (istream &is)
 Read setup info from a standard istream is.
 
virtual void doupdate ()
 Check sanity of the object during the setup phase.
 
virtual void doinit ()
 Initialize this object after the setup phase before saving an EventGenerator to disk.
 
virtual void doinitrun ()
 Initialize this object.
 
virtual void dofinish ()
 Finalize this object.
 
virtual IVector getReferences ()
 Return a vector of all pointers to Interfaced objects used in this object.
 
virtual void rebind (const TranslationMap &)
 Rebind pointer to other Interfaced objects.
 
 InterfacedBase ()
 Protected default constructor.
 
 InterfacedBase (string newName)
 Protected constructor with the name given as argument.
 
 InterfacedBase (const InterfacedBase &i)
 Protected copy-constructor.
 
- Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
 ReferenceCounted ()
 Default constructor.
 
 ReferenceCounted (const ReferenceCounted &)
 Copy-constructor.
 
ReferenceCountedoperator= (const ReferenceCounted &)
 Assignment.
 
- Protected Member Functions inherited from ThePEG::Named
const Namedoperator= (const Named &other)
 Assignment.
 
const string & name (const string &newName)
 Set new name.
 
- Static Protected Member Functions inherited from ThePEG::Interfaced
static void registerRepository (IBPtr)
 Register an Interfaced object with the Repository.
 
static void registerRepository (IBPtr, string newName)
 Register an Interfaced object with the Repository, giving it a name.
 

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

◆ accept()

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.

◆ clone()

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.

◆ fullclone()

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.

◆ getHadrons()

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.

◆ persistentInput()

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.

◆ persistentOutput()

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

Function used to write out object persistently.

Parameters
osthe persistent output stream written to.

◆ reweight()

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.

Member Data Documentation

◆ initWeakToHadronsDecayer

ClassDescription<WeakToHadronsDecayer> ThePEG::WeakToHadronsDecayer::initWeakToHadronsDecayer
staticprivate

Describe a concrete class with persistent data.

Definition at line 108 of file WeakToHadronsDecayer.h.


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