The SimpleBaryonRemnantDecayer class inherits from the RemnantDecayer class and is able to decay RemnantParticles produced by the SoftRemnantHandler class for the cases when a single parton has been extracted from a baryon. More...

#include <SimpleBaryonRemnantDecayer.h>

Inheritance diagram for ThePEG::SimpleBaryonRemnantDecayer:

[legend]

Classes
struct	BaryonContent
	Simple struct to store info about baryon quark and di-quark constituents. More...

struct	DecayFailed
	Exception thrown if the decay of a remnant was impossible. More...

struct	NoDISRespect
	Warning Exception used when DIS kinematics was not respected. More...

Public Types
typedef Ptr< ZGenerator >::pointer	ZGPtr
	A pointer to a ZGenerator object. More...

typedef Ptr< FlavourGenerator >::pointer	FlGPtr
	A pointer to a FlavourGenerator object. More...

Public Types inherited from ThePEG::RemnantDecayer
enum	RecoilOption { boostAll, boostFinal, copyFinal }
	Enumerate the options for how to distribute recoils in the hard subsystem when taking energy to produce remnants. More...

typedef Ptr< PtGenerator >::pointer	PtGPtr
	A pointer to a PtGenerator object. More...

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.

Public Member Functions
ZGenerator &	zGenerator () const
	Return a reference to the object responsible for generating momentum fractions in case of more than one remnant.

FlavourGenerator &	flavourGenerator () const
	Return a reference to the object responsible for handling the flavour contents of a baryon.

Energy	margin () const
	Return the energy margin to be added to the sum of the parent and parton masses to determine if it is possible to construct the remnants with the given (upper limit of the) virtuality of the extracted parton.

bool	specialValence () const
	If true an extracted valens quark will always give a di-quark remnant.

const BaryonContent &	getBaryonInfo (tcPDPtr baryon) const
	Return info about baryon quark and di-quark constituents.

Standard constructors and destructors.
	SimpleBaryonRemnantDecayer ()
	The default constructor.

	SimpleBaryonRemnantDecayer (const SimpleBaryonRemnantDecayer &x)
	The copy constructor.

virtual	~SimpleBaryonRemnantDecayer ()
	The destructor.

Virtual functions required by the RemnantDecayer class.
virtual bool	accept (const DecayMode &dm) const
	Check if this decayer can perfom the decay specified by the given decay mode. More...

virtual ParticleVector	decay (const DecayMode &dm, const Particle &p, Step &step) const
	Perform a decay for a given DecayMode and a given Particle instance. More...

virtual bool	canHandle (tcPDPtr parent, tcPDPtr extracted) const
	Return true if this decayer can handle the extraction of the extracted parton from the given particle.

virtual bool	checkExtract (tcPPtr parent, tcPPtr extracted, const LorentzMomentum &pnew) const
	Return true if this decayer can handle the extraction of the extracted parton instance from the given particle instance. More...

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 ThePEG::RemnantDecayer
virtual bool	multiCapable () const
	Return true if this decayed can extract more than one parton from a particle.

RecoilOption	recoilOption () const
	The option for how to distribute recoils in the hard subsystem when taking energy to produce remnants.

int	respectDISKinematics () const
	If true, do not boost a scattered lepton (and possible radiated photons) in a DIS event, to ensure that and is unmodified.

PtGPtr	pTGenerator () const
	An object capable of generating an intrinsic transverse momentum of the created remnants.

	RemnantDecayer ()
	The default constructor.

virtual	~RemnantDecayer ()
	The destructor.

virtual bool	needsFullStep () const
	Return true if this Decayer need to access the full current step when a particle is decayed. More...

virtual ParticleVector	decay (const DecayMode &dm, const Particle &p) const
	Perform a decay for a given DecayMode and a given Particle instance. More...

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::Decayer
Ptr< Amplitude >::pointer	amplitude () const
	Return an amplitude associated with this decay matrix element. More...

virtual double	brat (const DecayMode &dm, const ParticleData &pd, double oldbrat) const
	Calculate branching ratio. More...

virtual double	brat (const DecayMode &dm, const Particle &p, double oldbrat) const
	Calculate branching ratio. More...

virtual ParticleVector	getChildren (const DecayMode &dm, const Particle &parent) const
	Produce the children. More...

virtual void	finalBoost (const Particle &parent, const ParticleVector &children) const
	Boost the decay products. More...

virtual void	setScales (const Particle &parent, const ParticleVector &children) const
	Set the scales. More...

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::HandlerBaseT< UseRandom >
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 with probability p /(p0+p1).

int	rnd3 (double p0, double p1, double p2) const
	Return an integer with probability p /(p0+p1+p2).

int	rnd4 (double p0, double p1, double p2, double p3) const
	Return an integer/ with probability p (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 StandardModelBase &	SM () 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.

virtual	~HandlerBaseT ()
	Destructor.

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. More...

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. More...

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::InterfacedBase
virtual	~InterfacedBase ()
	The virtual (empty) destructor;.

string	fullName () const
	Returns the full name of this object including its path, e.g. More...

string	name () const
	Returns the name of this object, without the path.

string	path () const
	Returns the path to this object including the trailing '/'. More...

string	comment () const
	Returns a comment assigned to this object.

void	setup (istream &is)
	Read setup info from a standard istream is. More...

virtual void	debugme () const
	Print out debugging information for this object on std::cerr. More...

void	update ()
	Calls the doupdate() function with recursion prevention.

void	init ()
	Calls the doinit() function with recursion prevention.

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. More...

void	persistentInput (PersistentIStream &is, int version)
	Function used to read in object persistently. More...

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. More...

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.

Static Public Member Functions
static void	Init ()
	The standard Init function used to initialize the interfaces. More...

Static Public Member Functions inherited from ThePEG::RemnantDecayer
static tPVector	decayRemnants (const tPVector &particles, Step &step)
	Static function to decay al remnants among the given particles. More...

static void	Init ()
	The standard Init function used to initialize the interfaces. More...

Static Public Member Functions inherited from ThePEG::Decayer
static ParticleVector	DecayParticle (tPPtr parent, Step &step, long maxtry=1000)
	Static function to administer the decay of a particle. More...

static void	Init ()
	Standard Init function used to initialize the interfaces.

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. More...

Protected Member Functions
Standard Interfaced functions.
virtual void	doinit ()
	Initialize this object after the setup phase before saving an EventGenerator to disk. More...

virtual bool	preInitialize () const
	Return true if this object needs to be initialized before all other objects because it needs to extract cuts from the event file.

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::RemnantDecayer
tRemPDPtr	data (tcRemPPtr remnant) const
	Access the RemnantData object of a remnant.

tcPPtr	parent (tcRemPPtr remnant) const
	Access the parent of a remnant.

const PVector &	extracted (tcRemPPtr remnant) const
	Access the vector of extracted particles of a remnant.

virtual void	fillSubSystem (tPPtr p, set< tPPtr > &sub) const
	Recursively find all particles produced from an extracted parton.

virtual tPVector	getSubSystem (tcPPtr parent, tPPtr parton) const
	Return the system of particles from the hard subsystem which may be used to shuffle momenta to get the remnants on-shell. More...

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. More...

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
	InterfacedBase ()
	Protected default constructor.

	InterfacedBase (string newName)
	Protected constructor with the name given as argument.

	InterfacedBase (const InterfacedBase &i)
	Protected copy-constructor.

virtual void	readSetup (istream &is)
	Read setup info from a standard istream is. More...

virtual void	doupdate ()
	Check sanity of the object during the setup phase. More...

virtual void	doinitrun ()
	Initialize this object. More...

virtual void	dofinish ()
	Finalize this object. More...

virtual IVector	getReferences ()
	Return a vector of all pointers to Interfaced objects used in this object. More...

virtual void	rebind (const TranslationMap &)
	Rebind pointer to other Interfaced objects. More...

Protected Member Functions inherited from ThePEG::Pointer::ReferenceCounted
	ReferenceCounted ()
	Default constructor.

	ReferenceCounted (const ReferenceCounted &)
	Copy-constructor.

ReferenceCounted &	operator= (const ReferenceCounted &)
	Assignment.

Protected Member Functions inherited from ThePEG::Named
const Named &	operator= (const Named &other)
	Assignment.

const string &	name (const string &newName)
	Set new name.

Private Member Functions
SimpleBaryonRemnantDecayer &	operator= (const SimpleBaryonRemnantDecayer &)=delete
	The assignment operator is private and must never be called. More...

Private Attributes
ZGPtr	theZGenerator
	The object responsible for generating momentum fractions in case of more than one remnant.

FlGPtr	theFlavourGenerator
	The object responsible for handling the flavour contents of a baryon.

Energy	theMargin
	The energy margin to be added to the sum of the parent and parton masses to determine if it is possible to construct the remnants with the given (upper limit of the) virtuality of the extracted parton.

bool	useSpecialValence
	If true an extracted valens quark will always give a di-quark remnant.

map< tcPDPtr, BaryonContent >	baryonmap
	A map of info about baryon quark and di-quark constituents.

Static Private Attributes
static ClassDescription< SimpleBaryonRemnantDecayer >	initSimpleBaryonRemnantDecayer
	The static object used to initialize the description of this class. More...

Additional Inherited Members
Public Attributes inherited from ThePEG::Pointer::ReferenceCounted
const unsigned long	uniqueId
	The unique ID. More...

Static Protected Member Functions inherited from ThePEG::RemnantDecayer
static LorentzRotation	getZBoost (const LorentzMomentum &p0, const LorentzMomentum &p)
	Return a small boost along the z-axis. More...

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.

Protected Attributes inherited from ThePEG::RemnantDecayer
int	respectDIS
	If true, do not boost a scattered lepton (and possible radiated photons) in a DIS event, to ensure that and is unmodified.

Detailed Description

The SimpleBaryonRemnantDecayer class inherits from the RemnantDecayer class and is able to decay RemnantParticles produced by the SoftRemnantHandler class for the cases when a single parton has been extracted from a baryon.

See also: The interfaces defined for SimpleBaryonRemnantDecayer.

Definition at line 31 of file SimpleBaryonRemnantDecayer.h.

Member Typedef Documentation

◆ FlGPtr

typedef Ptr<FlavourGenerator>::pointer ThePEG::SimpleBaryonRemnantDecayer::FlGPtr

A pointer to a FlavourGenerator object.

Definition at line 38 of file SimpleBaryonRemnantDecayer.h.

◆ ZGPtr

typedef Ptr<ZGenerator>::pointer ThePEG::SimpleBaryonRemnantDecayer::ZGPtr

A pointer to a ZGenerator object.

Definition at line 36 of file SimpleBaryonRemnantDecayer.h.

Member Function Documentation

◆ accept()

virtual bool ThePEG::SimpleBaryonRemnantDecayer::accept ( const DecayMode & dm ) const

virtual

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

Parameters

dm	the DecayMode describing the decay.

Returns: true if this decayer can handle the given mode, otherwise false.

Reimplemented from ThePEG::RemnantDecayer.

Referenced by SimpleBaryonRemnantDecayer().

◆ checkExtract()

virtual bool ThePEG::SimpleBaryonRemnantDecayer::checkExtract	(	tcPPtr	parent,
		tcPPtr	extracted,
		const LorentzMomentum &	pnew
	)		const

virtual

Return true if this decayer can handle the extraction of the extracted parton instance from the given particle instance.

pnew is the momentum of the resulting remnant. The default version simply checks if the energy is positive.

Reimplemented from ThePEG::RemnantDecayer.

Referenced by SimpleBaryonRemnantDecayer().

◆ clone()

virtual IBPtr ThePEG::SimpleBaryonRemnantDecayer::clone ( ) const

protectedvirtual

Make a simple clone of this object.

Returns: a pointer to the new object.

Implements ThePEG::InterfacedBase.

Referenced by specialValence().

◆ decay()

virtual ParticleVector ThePEG::SimpleBaryonRemnantDecayer::decay	(	const DecayMode &	dm,
		const Particle &	p,
		Step &	step
	)		const

virtual

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

This version allows the decaying particle to borrow energy/momentum from its sublings in the current step. This will be called by the standard DecayHandler if the needsFullStep() function returns true.

Parameters

dm	the DecayMode describing the decay.
p	the Particle instance to be decayed.
step	the current step in which to find possible siblings to shuffle energy with.