Pythia7::LundFlavourGenerator Class Reference

The LundFlavouGenerator is the class responsible for the flavour generation according to the Lund scheme of fragmentation. More...

#include <LundFlavourGenerator.h>

Inheritance diagram for Pythia7::LundFlavourGenerator:

List of all members.

Public Types

typedef vector< double > WeightsVec

A vector used for SU6 Weights.

typedef WeightsVec::const_iterator WeightsVecPtr

An iterator into the SU6 weights vector.

typedef vector< WeightsVec > WeightsTable

A matrix used for SU6 Weights.

Public Member Functions

virtual PDPtr generateHadron (tcPDPtr inPD, cPDPtr &newPD, long curtainQid=0) const

Given an input flavour, inPD, selects a method (Q2BaryonDQ(), Q2MesonQ(), PopDQ2MesonDQ() or DQ2BaryonQ()) that will generate the new flavour to be combined with inPD to produce the new hadron.

void initialize ()

Initializes the parameters of the generator that depend either on the the interfaced parameters or on the model chosen for the baryon production.

virtual PDPtr getRandomFlavour () const

Returns the a pointer to a quark (or antiquark) of a qqbar pair created in the string colour field.

void DBprint ()

Print out state of an object for debugging purposed.

Standard constructors and destructors.

LundFlavourGenerator ()

Default constructor.

LundFlavourGenerator (const LundFlavourGenerator &)

Copy-constructor.

virtual ~LundFlavourGenerator ()

Destructor.

Virtual functions required by the FlavourGenerator class.

virtual tcPDPair generateHadron (tcPDPtr quark) const

Generate a hadron from a quark.

virtual tcPDPtr getHadron (tcPDPtr inPD1, tcPDPtr inPD2) const

Get hadron from flavours.

virtual tcPDPtr getBaryon (long q1, long q2, long q3) const

Return a baryon with the flavour content given by the (anti)quarks in the argument.

virtual long selectQuark () const

Generate a random quark flavour.

virtual long selectFlavour () const

Generate a random (di)quark flavour.

Access parameters and swithces.

int BaryonMod () const

Returns the baryon mode.

double strangeQSup () const

Returns the suppression factor for production of a $s\bar{s}$ pair.

bool extraSuppressed () const

Returns true if any selected flavour is extra-suppressed.

Functions dealing with popcorn generation.

int PopMesonN (tcPDPtr inDQ) const

When a diquark is first produced in the string fragmentation, if (BaryomMode=2) this method is invoked to know the number of popcorn mesons that should be produced in between the baryon anti-baryon pair.

int PopMesonN (long inDQ) const

When a diquark is first produced in the string fragmentation, if (BaryomMode=2) this method is invoked to know the number of popcorn mesons that should be produced in between the baryon anti-baryon pair.

long PopSelectCurtainFlavour (tcPDPtr inDQ) const

Given the diquark that initializes the popcorn generation, selects a curtain quark for the popcorn meson production.

long PopSelectCurtainFlavour (long inDQ) const

Given the diquark that initializes the popcorn generation, selects a curtain quark for the popcorn meson production.

bool PopGenRejected () const

In the process of producing a popcorn meson, the PopDQ2MesonD() function may fail to recombine the curtainQ and the new flavour into a new diquark state.

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 Public Member Functions

static void Init ()

Standard Init function used to initialize the interface.

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.

Standard Interfaced functions.

virtual void doupdate () throw (UpdateException)

Check sanity of the object during the setup phase.

virtual void doinit () throw (InitException)

Initialize this object after the setup phase before saving an EventGenerator to disk.

virtual void dofinish ()

Finalize this object.

Private Member Functions

Meson-production functions.

void Q2MesonQ (long inQ) const

Is the method for the meson production : inQ $\rightarrow$ newQ + newMeson.

long formMeson (long inQ, long newQ) const

Given the two constituant quark id numbers, inQ and newQ, forms a new meson and returns its id.

int selectMesonMultiplet (long Hfl) const

When two flavours combine off to form a meson, this function returns the multiplet of the new meson in function of the heavier quark, Hfl, of the two.

int MesonSpin (int multipletIdx) const

Given the multiplet of the newly created meson, returns its total angular momentum J.

int RandomFlavourMixing (long Qid, int multipletIdx, double rnd) const

Selects the physical state of a light flavour-diagonal meson.

Diquark production functions.

bool DQproduction () const

When a incoming quark is sent to generateHadron() a choice is made to rather produce a quark or a diquark.

bool DQspinSup (int DQspin) const

When creating a new diquark (in the Q2BaryonDQ)) this method returns true if the diquark is spin-suppressed.

Baryaon production functions.

void Q2BaryonDQ (long inQ) const

This is a baryon production method for the process inQ -> newDQ + newBaryon
Given a incoming quark, inQ generates a new diquark such as the q-diquark combination is acceptable according to the corresponding weight for the baryon production.

void DQ2BaryonQ (long inDQ) const

This is the baryon production method for the process : inDQ -> newQ + newBaryon
Given the incoming diquark, inDQ, generates a new flavour such as the weight of the baryon corresponding to the (diquark-quark) combination is acceptable.

long formBaryon (long Q, long DQ, WeightsVecPtr theWeights) const

Given the quark (Q) - diquark(DQ) flavour combination and the corresponding SU6 Weights, form the new baryon.

WeightsVecPtr getSU6MultWeightVec (long Qid, long DQid) const

Given the quark (Qid) - diquark (DQid) combination, returns from the lookup table theSU6WeightsTable a pointer to the table (internally a vector) holding the relative probabilities for the Q, DQ to join into a baryon of the octet or decuplet multiplet.

double OctetWT (WeightsVecPtr wtIt) const

Given the table selected by the getSU6MultWeightVec() returns the relative probability that the quark-diquark combination forms a baryon in the octet.

double DecupletWT (WeightsVecPtr wtIt) const

Given the table selected by the getSU6MultWeightVec() return the relative probability that the quark-diquark combination forms a baryon in the decuplet.

Popcorn functions.

double PopDQweight (long inDQ) const

Given a diquark (inDQ), returns its weight for the popcorn model in function of its flavour content.

void PopDQ2MesonDQ (long inDQ, long absCurtainQ) const

Method of the popcorn meson generation : DQ -> popMeson + DQ'
Given the incoming diquark (inDQ) and the curtain quark (absCurtainQ), combines the free flavour of inDQ with a new created quark to produce the popcorn Meson -> if the generation is not rejected by the PopConsistentDQ() then reconstructs the outgoing diquark DQ', else a new curtain quark has to be re-selected.

bool PopConsistentDQ (long q1, long q2) const

In popcorn meson production, this method returns false if the selected curtainQ and the new flavour cannot combine into a new diquark state.

Flavour joining functions.

bool consistentJoin (long fl1, long fl2) const

Performs checks on the two incoming flavours to be combined.

Inlined helper functions.

bool isQuark (long fl) const

Returns true if the incoming flavour id (fl) corresponds to a quark number.

bool isDiquark (long fl) const

Returns true if the incoming flavour id (fl) corresponds to a diquark number.

void getDQcontent (int inDQ, int &hq, int &lq, int &s) const

Given a diquark id number (inDQ), returns its heavy (hq), light(lq) quark and its spin (s).

Functions for initialization of parameters.

void initGenPar ()

Computes the suppression factor for Spin1 diquark production.

void setDefaultMixingAnglesVec ()

Initializes the default values of the mixing angles, theMixingAngles, for the 6 meson multiplets.

void setMesonFlavourMixingProbs ()

Given the set of Mixing angles, theMixingAngles for the different meson multiplets (the defaults values or the user defined values), initializes the mixing probabilities theMixingProbVec for the production of diagonal-flavour mesons.

void setSU6weights ()

Initializes the table of the non-interfaced SU6 Weights : theSU6WeightsTable.

void setPopDQweights ()

Initializes the diquark weights for the popcorn model (DQweight).

Private Attributes

long newFl

The Id number of the generated flavour.

long theHadron

The Id numbers of the created hadron.

bool extraSup

True if an Eta, Eta' meson constructed by formMeson() method turns out to be extra-suppressed.

bool thePopRejection

True if the PopDQ2MesonDQ method fails to reconstruct the outgoing diquark.

int theBaryonMod

See documentation of interface BaryonMode.

double DQsup

See documentation of interface DQsup.

double IS1DQsup

See documentation of interface S1DQsup.

double BaryonDecupletSup

See documentation of interface SBaryonDecupletSup.

double extraEtaSup

See documentation of interface extraEtaSup.

double extraEtapSup

See documentation of interface extraEtapSup.

double MesonP

See documentation of interface MesonP.

double BssBsup

See documentation of interface BssBsup.

double BMsBsup

See documentation of interface BMsBsup.

double sQsup

See documentation of interface sQsup.

double sDQvQsup

See documentation of interface sDQvQsup.

double S1lightMesonP

See documentation of interface S1lightMesonP.

double S1sMesonP

See documentation of interface S1sMesonP.

double S1hqMesonP

See documentation of interface S1hqMesonP.

double P_S0L1J1

See documentation of interface P_S0L1J1.

double P_S1L1J0

See documentation of interface P_S1L1J0.

double P_S1L1J1

See documentation of interface P_S1L1J1.

double P_S1L1J2

See documentation of interface P_S1L1J2.

vector< double > theMixingAngles

The mixing angles for the production of flavour-diagonal meson.

vector< double > DQweight

The lookup table for diquark weights in the popcorn model, used to compute the baryon weight when combining the DQ with a new Q in the Q2BaryonDQ() method.

double S1DQsup

Set in initialization to 3*IS1DQsup.

double POP_sDQvQsup

Popcorn parameters.

double POP_S1DQsup

Popcorn parameters.

double POP_delta

Popcorn parameters.

double DQmaxWeight

Maximun weight for diquark production.

WeightsTable theSU6WeightsTable

Lookup Tables for the SU6 weights.

WeightsTable theMixingProbVec

Lookup Tables for the mixing probabilities .

Static Private Attributes

static ClassDescription
< LundFlavourGenerator > initLundFlavourGenerator

Standard Interface.

Detailed Description

The LundFlavouGenerator is the class responsible for the flavour generation according to the Lund scheme of fragmentation.

It derives from the FlavourGenerator and overrides the two categories of interfaces : the generateHadron() and the getHadron() methods.

The first one is given one incoming flavour, generates a new quark or diquark, and combines it with the existing flavour, then returns the new hadron and the newly created flavour. The second receives two incoming flavours and tries to combine them into a new hadron.

Different models for flavour production can be selected setting the Switch BaryonMode.

The popcorn model for baryon production needs extra handling than simple flavour production. It is therefore handled by the LundFlavourHandler. Nevertheless the LundFlavourGenerator encapsulates the methods for the popcorn generation. They are denoted as popXXXX() methods.

See also:

The interfaces defined for LundFlavourGenerator.

FlavourGenerator

LundFlavourHandler

Definition at line 43 of file LundFlavourGenerator.h.

Member Typedef Documentation

typedef vector<double> Pythia7::LundFlavourGenerator::WeightsVec

A vector used for SU6 Weights.

Definition at line 48 of file LundFlavourGenerator.h.

typedef WeightsVec::const_iterator Pythia7::LundFlavourGenerator::WeightsVecPtr

An iterator into the SU6 weights vector.

Definition at line 51 of file LundFlavourGenerator.h.

typedef vector< WeightsVec > Pythia7::LundFlavourGenerator::WeightsTable

A matrix used for SU6 Weights.

Definition at line 54 of file LundFlavourGenerator.h.

Member Function Documentation

virtual tcPDPair Pythia7::LundFlavourGenerator::generateHadron ( tcPDPtr quark ) const [virtual]

Generate a hadron from a quark.

Given a quark(antiquark, diquark or antidiquark), choose a quark-antiquark (or antidiquark-diquark) pair. Return (first) a hadron formed by the original quark and the antiquark together with (second) the generated quark. Returns null pointers if the generation failed.

Parameters:

quark

a quark, antiquark, diquark or antidiquark.

Returns:: a pair of ParticleData pointers. The first is the hadron produced and the second is the anti-partner of the (anti-)(di-)quark generated to form the hadron.

Implements ThePEG::FlavourGenerator.

virtual tcPDPtr Pythia7::LundFlavourGenerator::getHadron	(	tcPDPtr	inPD1,
		tcPDPtr	inPD2
	)			const `[virtual]`

Get hadron from flavours.

Return a hadron with the flavour content given by the (anti-)(di-)quarks in the argument. The arguments are given as ParticleData pointers. The default versions will call the getHadron(long, long).

Parameters:

	inPD1	the first flavour.
	inPD2	the second flavour.

Returns:: the corresponding hadron type or null if none could be generated.

Reimplemented from ThePEG::FlavourGenerator.

virtual tcPDPtr Pythia7::LundFlavourGenerator::getBaryon	(	long	q1,
		long	q2,
		long	q3
	)			const `[virtual]`

Return a baryon with the flavour content given by the (anti)quarks in the argument.

The arguments are given as particle data pointers. The default versions will call getBaryon(tcPDPtr, tcPDPtr, tcPDPtr). If no corresponding hadron was formed it should return the null pointer.

Parameters:

	q1	the PDG code of the first flavour.
	q2	the PDG code of the second flavour.
	q3	the PDG code of the third flavour.

Returns:: the corresponding baryon type or null if none could be generated.

Reimplemented from ThePEG::FlavourGenerator.

virtual PDPtr Pythia7::LundFlavourGenerator::generateHadron	(	tcPDPtr	inPD,
		cPDPtr &	newPD,
		long	curtainQid = `0`
	)			const `[virtual]`

Given an input flavour, inPD, selects a method (Q2BaryonDQ(), Q2MesonQ(), PopDQ2MesonDQ() or DQ2BaryonQ()) that will generate the new flavour to be combined with inPD to produce the new hadron.

newPD will be set to the newly created flavour and the hadron will be returned.
For the popcorn model the Id number of the diquark curtain-quark is given as curtainQid. Therefore curtainQid = 0 means either that the popcorn model is not switched on or the final baryon of a popcorn generation has to be produced. The selection of curtain quark is however handled by the LundFlavourHandler.

void Pythia7::LundFlavourGenerator::initialize ( )

Initializes the parameters of the generator that depend either on the the interfaced parameters or on the model chosen for the baryon production.

It calls the setMesonFlavourMixingProbs() and initGenPar() methods.

bool Pythia7::LundFlavourGenerator::extraSuppressed ( ) const [inline]

Returns true if any selected flavour is extra-suppressed.

Currently returns true if an Eta, Eta' meson is extra-suppressed.

bool Pythia7::LundFlavourGenerator::PopGenRejected ( ) const [inline]

In the process of producing a popcorn meson, the PopDQ2MesonD() function may fail to recombine the curtainQ and the new flavour into a new diquark state.

The handler of the popcorn generation is informed about this rejection invoking this method that returns true if the generation failed.

void Pythia7::LundFlavourGenerator::persistentOutput ( PersistentOStream & os ) const

Function used to write out object persistently.

Parameters:

os

the persistent output stream written to.

Reimplemented from ThePEG::FlavourGenerator.

void Pythia7::LundFlavourGenerator::persistentInput	(	PersistentIStream &	is,
		int	version
	)

Function used to read in object persistently.

Parameters:

	is	the persistent input stream read from.
	version	the version number of the object when written.

Reimplemented from ThePEG::FlavourGenerator.

virtual IBPtr Pythia7::LundFlavourGenerator::clone ( ) const [inline, protected, virtual]

Make a simple clone of this object.

Returns:: a pointer to the new object.

Implements ThePEG::InterfacedBase.

virtual IBPtr Pythia7::LundFlavourGenerator::fullclone ( ) const [inline, protected, virtual]

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.

virtual void Pythia7::LundFlavourGenerator::doinit ( ) throw (InitException) [inline, protected, virtual]

Initialize this object after the setup phase before saving an EventGenerator to disk.

Exceptions:

InitException

if object could not be initialized properly.

Reimplemented from ThePEG::InterfacedBase.

virtual void Pythia7::LundFlavourGenerator::dofinish ( ) [inline, protected, virtual]

Finalize this object.

Called in the run phase just after a run has ended. Used eg. to write out statistics.

Reimplemented from ThePEG::InterfacedBase.

void Pythia7::LundFlavourGenerator::Q2MesonQ ( long inQ ) const [private]

Is the method for the meson production : inQ $\rightarrow$ newQ + newMeson.

Receives the incoming quark id, inQ, generates a new quark flavour and invokes formMeson() to combine them into a newMeson stored in member variables.

int Pythia7::LundFlavourGenerator::RandomFlavourMixing	(	long	Qid,
		int	multipletIdx,
		double	rnd
	)			const `[inline, private]`

Selects the physical state of a light flavour-diagonal meson.

Given the flavour (Qid) of a qqbar pair and the meson multiplet (multipletIdx) of the corresponding meson selects at random the meson state (described internally by an integer number that is returned), according to the different probabilities (theMixingProbabilities) that the $q\bar{q}$ pair produces the possible diagonal-mesons of the different multiplets.

bool Pythia7::LundFlavourGenerator::DQproduction ( ) const [inline, private]

When a incoming quark is sent to generateHadron() a choice is made to rather produce a quark or a diquark.

This method returns true if a diquark is chosen to be produced.

void Pythia7::LundFlavourGenerator::Q2BaryonDQ ( long inQ ) const [private]

This is a baryon production method for the process inQ -> newDQ + newBaryon
Given a incoming quark, inQ generates a new diquark such as the q-diquark combination is acceptable according to the corresponding weight for the baryon production.

Warning: Contains a special treatment for diquark produced within the pocorm model.

void Pythia7::LundFlavourGenerator::PopDQ2MesonDQ	(	long	inDQ,
		long	absCurtainQ
	)			const `[private]`

Method of the popcorn meson generation : DQ -> popMeson + DQ'
Given the incoming diquark (inDQ) and the curtain quark (absCurtainQ), combines the free flavour of inDQ with a new created quark to produce the popcorn Meson -> if the generation is not rejected by the PopConsistentDQ() then reconstructs the outgoing diquark DQ', else a new curtain quark has to be re-selected.

Warning: the absolute value of curtainQ (absCurtainQ) as input here.

bool Pythia7::LundFlavourGenerator::consistentJoin	(	long	fl1,
		long	fl2
	)			const `[private]`

Performs checks on the two incoming flavours to be combined.

Returns false if the flavour combination is not consistent.

void Pythia7::LundFlavourGenerator::initGenPar ( ) [private]

Computes the suppression factor for Spin1 diquark production.

if the popcorn model is selected scales the quark/diquark suppression factors and sets the diquark weights.
Warning: To be called after any change of the interfaced parameters involved.

void Pythia7::LundFlavourGenerator::setMesonFlavourMixingProbs ( ) [private]

Given the set of Mixing angles, theMixingAngles for the different meson multiplets (the defaults values or the user defined values), initializes the mixing probabilities theMixingProbVec for the production of diagonal-flavour mesons.

Warning: To be called after any change of the mixing angles.

void Pythia7::LundFlavourGenerator::setPopDQweights ( ) [private]

Initializes the diquark weights for the popcorn model (DQweight).

Warning: Called by initGenPar() after any change of the interfaced parameters.

Member Data Documentation

bool Pythia7::LundFlavourGenerator::thePopRejection [mutable, private]

True if the PopDQ2MesonDQ method fails to reconstruct the outgoing diquark.

The generation is rejected and a new curtain quark as to be selected.

Definition at line 531 of file LundFlavourGenerator.h.

vector<double> Pythia7::LundFlavourGenerator::DQweight [private]

The lookup table for diquark weights in the popcorn model, used to compute the baryon weight when combining the DQ with a new Q in the Q2BaryonDQ() method.

Set by initialize().

Definition at line 651 of file LundFlavourGenerator.h.

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

LundFlavourGenerator.h


Public Types
typedef vector< double >	WeightsVec
	A vector used for SU6 Weights.
typedef WeightsVec::const_iterator	WeightsVecPtr
	An iterator into the SU6 weights vector.
typedef vector< WeightsVec >	WeightsTable
	A matrix used for SU6 Weights.
Public Member Functions
virtual PDPtr	generateHadron (tcPDPtr inPD, cPDPtr &newPD, long curtainQid=0) const
	Given an input flavour, inPD, selects a method (Q2BaryonDQ(), Q2MesonQ(), PopDQ2MesonDQ() or DQ2BaryonQ()) that will generate the new flavour to be combined with inPD to produce the new hadron.
void	initialize ()
	Initializes the parameters of the generator that depend either on the the interfaced parameters or on the model chosen for the baryon production.
virtual PDPtr	getRandomFlavour () const
	Returns the a pointer to a quark (or antiquark) of a qqbar pair created in the string colour field.
void	DBprint ()
	Print out state of an object for debugging purposed.
Standard constructors and destructors.
	LundFlavourGenerator ()
	Default constructor.
	LundFlavourGenerator (const LundFlavourGenerator &)
	Copy-constructor.
virtual	~LundFlavourGenerator ()
	Destructor.
Virtual functions required by the FlavourGenerator class.
virtual tcPDPair	generateHadron (tcPDPtr quark) const
	Generate a hadron from a quark.
virtual tcPDPtr	getHadron (tcPDPtr inPD1, tcPDPtr inPD2) const
	Get hadron from flavours.
virtual tcPDPtr	getBaryon (long q1, long q2, long q3) const
	Return a baryon with the flavour content given by the (anti)quarks in the argument.
virtual long	selectQuark () const
	Generate a random quark flavour.
virtual long	selectFlavour () const
	Generate a random (di)quark flavour.
Access parameters and swithces.
int	BaryonMod () const
	Returns the baryon mode.
double	strangeQSup () const
	Returns the suppression factor for production of a $s\bar{s}$ pair.
bool	extraSuppressed () const
	Returns true if any selected flavour is extra-suppressed.
Functions dealing with popcorn generation.
int	PopMesonN (tcPDPtr inDQ) const
	When a diquark is first produced in the string fragmentation, if (`BaryomMode`=2) this method is invoked to know the number of popcorn mesons that should be produced in between the baryon anti-baryon pair.
int	PopMesonN (long inDQ) const
	When a diquark is first produced in the string fragmentation, if (`BaryomMode`=2) this method is invoked to know the number of popcorn mesons that should be produced in between the baryon anti-baryon pair.
long	PopSelectCurtainFlavour (tcPDPtr inDQ) const
	Given the diquark that initializes the popcorn generation, selects a curtain quark for the popcorn meson production.
long	PopSelectCurtainFlavour (long inDQ) const
	Given the diquark that initializes the popcorn generation, selects a curtain quark for the popcorn meson production.
bool	PopGenRejected () const
	In the process of producing a popcorn meson, the PopDQ2MesonD() function may fail to recombine the curtainQ and the new flavour into a new diquark state.
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 Public Member Functions
static void	Init ()
	Standard Init function used to initialize the interface.
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.
Standard Interfaced functions.
virtual void	doupdate () throw (UpdateException)
	Check sanity of the object during the setup phase.
virtual void	doinit () throw (InitException)
	Initialize this object after the setup phase before saving an EventGenerator to disk.
virtual void	dofinish ()
	Finalize this object.
Private Member Functions
Meson-production functions.
void	Q2MesonQ (long inQ) const
	Is the method for the meson production : inQ $\rightarrow$ `newQ + newMeson`.
long	formMeson (long inQ, long newQ) const
	Given the two constituant quark id numbers, inQ and newQ, forms a new meson and returns its id.
int	selectMesonMultiplet (long Hfl) const
	When two flavours combine off to form a meson, this function returns the multiplet of the new meson in function of the heavier quark, Hfl, of the two.
int	MesonSpin (int multipletIdx) const
	Given the multiplet of the newly created meson, returns its total angular momentum J.
int	RandomFlavourMixing (long Qid, int multipletIdx, double rnd) const
	Selects the physical state of a light flavour-diagonal meson.
Diquark production functions.
bool	DQproduction () const
	When a incoming quark is sent to generateHadron() a choice is made to rather produce a quark or a diquark.
bool	DQspinSup (int DQspin) const
	When creating a new diquark (in the Q2BaryonDQ)) this method returns true if the diquark is spin-suppressed.
Baryaon production functions.
void	Q2BaryonDQ (long inQ) const
	This is a baryon production method for the process inQ `-> newDQ + newBaryon` Given a incoming quark, inQ generates a new diquark such as the q-diquark combination is acceptable according to the corresponding weight for the baryon production.
void	DQ2BaryonQ (long inDQ) const
	This is the baryon production method for the process : inDQ `-> newQ + newBaryon` Given the incoming diquark, inDQ, generates a new flavour such as the weight of the baryon corresponding to the (diquark-quark) combination is acceptable.
long	formBaryon (long Q, long DQ, WeightsVecPtr theWeights) const
	Given the quark (Q) - diquark(DQ) flavour combination and the corresponding SU6 Weights, form the new baryon.
WeightsVecPtr	getSU6MultWeightVec (long Qid, long DQid) const
	Given the quark (Qid) - diquark (DQid) combination, returns from the lookup table `theSU6WeightsTable` a pointer to the table (internally a vector) holding the relative probabilities for the Q, DQ to join into a baryon of the octet or decuplet multiplet.
double	OctetWT (WeightsVecPtr wtIt) const
	Given the table selected by the getSU6MultWeightVec() returns the relative probability that the quark-diquark combination forms a baryon in the octet.
double	DecupletWT (WeightsVecPtr wtIt) const
	Given the table selected by the getSU6MultWeightVec() return the relative probability that the quark-diquark combination forms a baryon in the decuplet.
Popcorn functions.
double	PopDQweight (long inDQ) const
	Given a diquark (inDQ), returns its weight for the popcorn model in function of its flavour content.
void	PopDQ2MesonDQ (long inDQ, long absCurtainQ) const
	Method of the popcorn meson generation : DQ -> popMeson + DQ' Given the incoming diquark (inDQ) and the curtain quark (absCurtainQ), combines the free flavour of inDQ with a new created quark to produce the popcorn Meson -> if the generation is not rejected by the PopConsistentDQ() then reconstructs the outgoing diquark DQ', else a new curtain quark has to be re-selected.
bool	PopConsistentDQ (long q1, long q2) const
	In popcorn meson production, this method returns false if the selected curtainQ and the new flavour cannot combine into a new diquark state.
Flavour joining functions.
bool	consistentJoin (long fl1, long fl2) const
	Performs checks on the two incoming flavours to be combined.
Inlined helper functions.
bool	isQuark (long fl) const
	Returns true if the incoming flavour id (fl) corresponds to a quark number.
bool	isDiquark (long fl) const
	Returns true if the incoming flavour id (fl) corresponds to a diquark number.
void	getDQcontent (int inDQ, int &hq, int &lq, int &s) const
	Given a diquark id number (inDQ), returns its heavy (hq), light(lq) quark and its spin (s).
Functions for initialization of parameters.
void	initGenPar ()
	Computes the suppression factor for Spin1 diquark production.
void	setDefaultMixingAnglesVec ()
	Initializes the default values of the mixing angles, theMixingAngles, for the 6 meson multiplets.
void	setMesonFlavourMixingProbs ()
	Given the set of Mixing angles, theMixingAngles for the different meson multiplets (the defaults values or the user defined values), initializes the mixing probabilities theMixingProbVec for the production of diagonal-flavour mesons.
void	setSU6weights ()
	Initializes the table of the non-interfaced SU6 Weights : theSU6WeightsTable.
void	setPopDQweights ()
	Initializes the diquark weights for the popcorn model (DQweight).
Private Attributes
long	newFl
	The Id number of the generated flavour.
long	theHadron
	The Id numbers of the created hadron.
bool	extraSup
	True if an Eta, Eta' meson constructed by formMeson() method turns out to be extra-suppressed.
bool	thePopRejection
	True if the PopDQ2MesonDQ method fails to reconstruct the outgoing diquark.
int	theBaryonMod
	See documentation of interface `BaryonMode`.
double	DQsup
	See documentation of interface `DQsup`.
double	IS1DQsup
	See documentation of interface `S1DQsup`.
double	BaryonDecupletSup
	See documentation of interface `SBaryonDecupletSup`.
double	extraEtaSup
	See documentation of interface `extraEtaSup`.
double	extraEtapSup
	See documentation of interface `extraEtapSup`.
double	MesonP
	See documentation of interface `MesonP`.
double	BssBsup
	See documentation of interface `BssBsup`.
double	BMsBsup
	See documentation of interface `BMsBsup`.
double	sQsup
	See documentation of interface `sQsup`.
double	sDQvQsup
	See documentation of interface `sDQvQsup`.
double	S1lightMesonP
	See documentation of interface `S1lightMesonP`.
double	S1sMesonP
	See documentation of interface `S1sMesonP`.
double	S1hqMesonP
	See documentation of interface `S1hqMesonP`.
double	P_S0L1J1
	See documentation of interface `P_S0L1J1`.
double	P_S1L1J0
	See documentation of interface `P_S1L1J0`.
double	P_S1L1J1
	See documentation of interface `P_S1L1J1`.
double	P_S1L1J2
	See documentation of interface `P_S1L1J2`.
vector< double >	theMixingAngles
	The mixing angles for the production of flavour-diagonal meson.
vector< double >	DQweight
	The lookup table for diquark weights in the popcorn model, used to compute the baryon weight when combining the DQ with a new Q in the Q2BaryonDQ() method.
double	S1DQsup
	Set in initialization to 3*IS1DQsup.
double	POP_sDQvQsup
	Popcorn parameters.
double	POP_S1DQsup
	Popcorn parameters.
double	POP_delta
	Popcorn parameters.
double	DQmaxWeight
	Maximun weight for diquark production.
WeightsTable	theSU6WeightsTable
	Lookup Tables for the SU6 weights.
WeightsTable	theMixingProbVec
	Lookup Tables for the mixing probabilities .
Static Private Attributes
static ClassDescription < LundFlavourGenerator >	initLundFlavourGenerator
	Standard Interface.