Class for defining the LASS resonance model. More...

#include <LauLASSRes.hh>

Inheritance diagram for LauLASSRes:

Public Member Functions
	LauLASSRes (LauResonanceInfo resInfo, const Int_t resPairAmpInt, const LauDaughters daughters)
	Constructor. More...

virtual	~LauLASSRes ()
	Destructor. More...

virtual void	initialise ()
	Initialise the model. More...

virtual LauAbsResonance::LauResonanceModel	getResonanceModel () const
	Get the resonance model type. More...

Double_t	getCutOff () const
	Get the cut off parameter. More...

void	setCutOff (const Double_t cutOff)
	Set the cut off parameter. More...

virtual void	setResonanceParameter (const TString &name, const Double_t value)
	Set value of a resonance parameter. More...

virtual void	floatResonanceParameter (const TString &name)
	Allow the various parameters to float in the fit. More...

virtual LauParameter *	getResonanceParameter (const TString &name)
	Access the given resonance parameter. More...

virtual const std::vector < LauParameter * > &	getFloatingParameters ()
	Retrieve the resonance parameters, e.g. so that they can be loaded into a fit. More...

Public Member Functions inherited from LauAbsResonance
	LauAbsResonance (LauResonanceInfo resInfo, const Int_t resPairAmpInt, const LauDaughters daughters)
	Constructor (for use by standard resonances) More...

	LauAbsResonance (const TString &resName, const Int_t resPairAmpInt, const LauDaughters *daughters)
	Constructor (for use by K-matrix components) More...

virtual	~LauAbsResonance ()
	Destructor. More...

virtual LauComplex	amplitude (const LauKinematics *kinematics)
	Calculate the complex amplitude. More...

LauSpinType	getSpinType () const
	Get the spin type. More...

const TString &	getResonanceName () const
	Get the name of the resonance. More...

const TString &	getSanitisedName () const
	Get the name of the resonance. More...

Int_t	getPairInt () const
	Get the integer to identify which DP axis the resonance belongs to. More...

Int_t	getSpin () const
	Get the spin of the resonance. More...

Int_t	getCharge () const
	Get the charge of the resonance. More...

Double_t	getMass () const
	Get the mass of the resonance. More...

Double_t	getWidth () const
	Get the width of the resonance. More...

LauParameter *	getMassPar ()
	Get the mass parameter of the resonance. More...

LauParameter *	getWidthPar ()
	Get the width parameter of the resonance. More...

virtual Bool_t	preSymmetrised () const
	Is the amplitude pre-symmetrised? More...

Bool_t	flipHelicity () const
	Get the helicity flip flag. More...

void	flipHelicity (const Bool_t boolean)
	Set the helicity flip flag. More...

Bool_t	ignoreMomenta () const
	Get the ignore momenta flag. More...

void	ignoreMomenta (const Bool_t boolean)
	Set the ignore momenta flag. More...

Bool_t	ignoreSpin () const
	Get the ignore spin flag. More...

void	ignoreSpin (const Bool_t boolean)
	Set the ignore spin flag. More...

Bool_t	ignoreBarrierScaling () const
	Get the ignore barrier factor scaling flag. More...

void	ignoreBarrierScaling (const Bool_t boolean)
	Set the ignore barrier factor scaling flag. More...

void	changeResonance (const Double_t newMass, const Double_t newWidth, const Int_t newSpin)
	Allow the mass, width and spin of the resonance to be changed. More...

void	changeBWBarrierRadii (const Double_t resRadius, const Double_t parRadius)
	Allow the Blatt-Weisskopf radius for the resonance and parent factors to be changed. More...

void	fixMass (const Bool_t parFixed)
	Fix or release the resonance mass. More...

void	fixWidth (const Bool_t parFixed)
	Fix or release the resonance width. More...

Bool_t	fixMass () const
	Get the status of resonance mass (fixed or released) More...

Bool_t	fixWidth () const
	Get the status of resonance width (fixed or released) More...

void	setSpinType (const LauSpinType spinType)
	Set the spin formalism to be used. More...

void	setBarrierRadii (LauBlattWeisskopfFactor resFactor, LauBlattWeisskopfFactor parFactor)
	Set the form factor model and parameters. More...

void	fixBarrierRadii (const Bool_t fixResRadius, const Bool_t fixParRadius)
	Fix or release the Blatt-Weisskopf barrier radii. More...

Bool_t	fixResRadius () const
	Get the status of resonance barrier radius (fixed or released) More...

Bool_t	fixParRadius () const
	Get the status of parent barrier radius (fixed or released) More...

Double_t	getResRadius () const
	Get the radius of the resonance barrier factor. More...

Double_t	getParRadius () const
	Get the radius of the parent barrier factor. More...

Protected Member Functions
void	setEffectiveRange (const Double_t r)
	Set the effective range parameter value. More...

void	setScatteringLength (const Double_t a)
	Set the scattering length parameter value. More...

Double_t	getEffectiveRange () const
	Get the effective range parameter. More...

Double_t	getScatteringLength () const
	Get the scattering length range parameter. More...

Bool_t	fixEffectiveRange () const
	See if the effective range parameter is fixed or floating. More...

Bool_t	fixScatteringLength () const
	See if the scattering length parameter is fixed or floating. More...

void	calcQ0 ()
	Utility function to calculate the q0 value. More...

virtual LauComplex	resAmp (Double_t mass, Double_t spinTerm)
	Complex resonant amplitude. More...

Protected Member Functions inherited from LauAbsResonance
TString	getNameParent () const
	Get the name of the parent particle. More...

TString	getNameDaug1 () const
	Get the name of the first daughter of the resonance. More...

TString	getNameDaug2 () const
	Get the name of the second daughter of the resonance. More...

TString	getNameBachelor () const
	Get the name of the daughter that does not originate form the resonance. More...

Double_t	getMassParent () const
	Get the parent particle mass. More...

Double_t	getMassDaug1 () const
	Get the mass of daughter 1. More...

Double_t	getMassDaug2 () const
	Get the mass of daughter 2. More...

Double_t	getMassBachelor () const
	Get the mass of the bachelor daughter. More...

Int_t	getChargeParent () const
	Get the Charge of the parent particle. More...

Int_t	getChargeDaug1 () const
	Get the charge of daughter 1. More...

Int_t	getChargeDaug2 () const
	Get the charge of daughter 2. More...

Int_t	getChargeBachelor () const
	Get the charge of the bachelor daughter. More...

Double_t	getQ () const
	Get the current value of the daughter momentum in the resonance rest frame. More...

Double_t	getP () const
	Get the current value of the bachelor momentum in the resonance rest frame. More...

Double_t	getPstar () const
	Get the current value of the bachelor momentum in the parent rest frame. More...

Double_t	getCovFactor () const
	Get the current value of the full spin-dependent covariant factor. More...

LauBlattWeisskopfFactor *	getParBWFactor ()
	Get the centrifugal barrier for the parent decay. More...

const LauBlattWeisskopfFactor *	getParBWFactor () const

LauBlattWeisskopfFactor *	getResBWFactor ()
	Get the centrifugal barrier for the resonance decay. More...

const LauBlattWeisskopfFactor *	getResBWFactor () const

LauResonanceInfo *	getResInfo () const
	Access the resonance info object. More...

const LauDaughters *	getDaughters () const
	Access the daughters object. More...

Double_t	calcZemachSpinFactor (const Double_t pProd) const
	Calculate the amplitude spin term using the Zemach tensor formalism. More...

Double_t	calcCovSpinFactor (const Double_t pProd)
	Calculate the amplitude spin term using the covariant tensor formalism. More...

void	calcCovFactor (const Double_t erm)
	Calculate the spin-dependent covariant factor. More...

Double_t	calcLegendrePoly () const
	Calculate the Legendre polynomial for the spin factor. More...

Double_t	calcLegendrePoly (const Double_t cosHel)
	Calculate the Legendre polynomial for the spin factor (specifying the cosHel value) More...

void	clearFloatingParameters ()
	Clear list of floating parameters. More...

void	addFloatingParameter (LauParameter *param)
	Add parameter to the list of floating parameters. More...

std::vector< LauParameter * > &	getParameters ()
	Access the list of floating parameters. More...

Private Member Functions
	LauLASSRes (const LauLASSRes &rhs)
	Copy constructor (not implemented) More...

LauLASSRes &	operator= (const LauLASSRes &rhs)
	Copy assignment operator (not implemented) More...

Private Attributes
Double_t	q0_
	Decay momentum of either daughter in the resonance rest frame. More...

Double_t	mDaugSum_
	Sum of the daughter masses. More...

Double_t	mDaugSumSq_
	Square of mDaugSum. More...

Double_t	mDaugDiff_
	Difference between the daughter masses. More...

Double_t	mDaugDiffSq_
	Square of mDaugDiff. More...

Double_t	resMass_
	The resonance mass. More...

Double_t	resMassSq_
	Square of the resonance mass. More...

LauParameter *	r_
	LASS effective range parameter. More...

LauParameter *	a_
	LASS scattering length parameter. More...

Double_t	cutOff_
	LASS cut off. More...

Additional Inherited Members
Public Types inherited from LauAbsResonance
enum	LauResonanceModel { BW, RelBW, GS, Flatte, Sigma, Kappa, Dabba, LASS, LASS_BW, LASS_NR, EFKLLM, KMatrix, FlatNR, NRModel, BelleNR, PowerLawNR, BelleSymNR, BelleSymNRNoInter, TaylorNR, PolNR, Pole, PolarFFNR, PolarFFSymNR, PolarFFSymNRNoInter, Rescattering, Rescattering2, RescatteringNoInter, MIPW_MagPhase, MIPW_RealImag, GaussIncoh, RhoOmegaMix_GS, RhoOmegaMix_RBW, RhoOmegaMix_GS_1, RhoOmegaMix_RBW_1 }
	Define the allowed resonance types. More...

enum	LauSpinType { Zemach_P, Zemach_Pstar, Covariant, Legendre }
	Define the allowed spin formalisms. More...

Static Public Member Functions inherited from LauAbsResonance
static bool	isIncoherentModel (LauResonanceModel model)
	Is the resonance model incoherent? More...

Detailed Description

Class for defining the LASS resonance model.

Class for defining the LASS resonance model, which includes a resonant part, plus an effective range term. This class is the coherent sum of the two.

Definition at line 45 of file LauLASSRes.hh.

Constructor & Destructor Documentation

LauLASSRes::LauLASSRes	(	LauResonanceInfo *	resInfo,
		const Int_t	resPairAmpInt,
		const LauDaughters *	daughters
	)

Constructor.

Parameters

[in]	resInfo	the object containing information on the resonance name, mass, width, spin, charge, etc.
[in]	resPairAmpInt	the number of the daughter not produced by the resonance
[in]	daughters	the daughter particles

Definition at line 38 of file LauLASSRes.cc.

LauLASSRes::~LauLASSRes ( )

virtual

Destructor.

Definition at line 76 of file LauLASSRes.cc.

LauLASSRes::LauLASSRes ( const LauLASSRes & rhs )

private

Copy constructor (not implemented)

Member Function Documentation

void LauLASSRes::calcQ0 ( )

protected

Utility function to calculate the q0 value.

Definition at line 102 of file LauLASSRes.cc.

Bool_t LauLASSRes::fixEffectiveRange ( ) const

inlineprotected

See if the effective range parameter is fixed or floating.

Returns: kTRUE if the effective range parameter is fixed, kFALSE otherwise

Definition at line 135 of file LauLASSRes.hh.

Bool_t LauLASSRes::fixScatteringLength ( ) const

inlineprotected

See if the scattering length parameter is fixed or floating.

Returns: kTRUE if the scattering length parameter is fixed, kFALSE otherwise

Definition at line 141 of file LauLASSRes.hh.

void LauLASSRes::floatResonanceParameter ( const TString & name )

virtual

Allow the various parameters to float in the fit.

Parameters

[in] name the name of the parameter to be floated

Reimplemented from LauAbsResonance.

Definition at line 229 of file LauLASSRes.cc.

Double_t LauLASSRes::getCutOff ( ) const

inline

Get the cut off parameter.

Returns: the cut off parameter

Definition at line 72 of file LauLASSRes.hh.

Double_t LauLASSRes::getEffectiveRange ( ) const

inlineprotected

Get the effective range parameter.

Returns: the effective range parameter

Definition at line 123 of file LauLASSRes.hh.

const std::vector< LauParameter * > & LauLASSRes::getFloatingParameters ( )

virtual

Retrieve the resonance parameters, e.g. so that they can be loaded into a fit.

Returns: floating parameters of the resonance

Reimplemented from LauAbsResonance.

Definition at line 192 of file LauLASSRes.cc.

virtual LauAbsResonance::LauResonanceModel LauLASSRes::getResonanceModel ( ) const

inlinevirtual

Get the resonance model type.

Returns: the resonance model type

Implements LauAbsResonance.

Definition at line 66 of file LauLASSRes.hh.

LauParameter * LauLASSRes::getResonanceParameter ( const TString & name )

virtual

Access the given resonance parameter.

Parameters

[in] name the name of the parameter

Returns: the corresponding parameter

Reimplemented from LauAbsResonance.

Definition at line 250 of file LauLASSRes.cc.

Double_t LauLASSRes::getScatteringLength ( ) const

inlineprotected

Get the scattering length range parameter.

Returns: the scattering length parameter

Definition at line 129 of file LauLASSRes.hh.

void LauLASSRes::initialise ( )

virtual

Initialise the model.

Implements LauAbsResonance.

Definition at line 80 of file LauLASSRes.cc.

LauLASSRes& LauLASSRes::operator= ( const LauLASSRes & rhs )

private

Copy assignment operator (not implemented)

LauComplex LauLASSRes::resAmp	(	Double_t	mass,
		Double_t	spinTerm
	)

protectedvirtual

Complex resonant amplitude.

Parameters

[in]	mass	appropriate invariant mass for the resonance
[in]	spinTerm	spin term

Implements LauAbsResonance.

Definition at line 113 of file LauLASSRes.cc.

void LauLASSRes::setCutOff ( const Double_t cutOff )

inline

Set the cut off parameter.

Parameters

[in] cutOff the cut off parameter

Definition at line 78 of file LauLASSRes.hh.

void LauLASSRes::setEffectiveRange ( const Double_t r )

protected

Set the effective range parameter value.

Parameters

[in] r the new effective range parameter value

Definition at line 262 of file LauLASSRes.cc.

void LauLASSRes::setResonanceParameter	(	const TString &	name,
		const Double_t	value
	)

virtual

Set value of a resonance parameter.

Parameters

[in]	name	the name of the parameter to be changed
[in]	value	the new parameter value

Reimplemented from LauAbsResonance.

Definition at line 215 of file LauLASSRes.cc.

void LauLASSRes::setScatteringLength ( const Double_t a )

protected

Set the scattering length parameter value.

Parameters

[in] a the new scattering length parameter value

Definition at line 269 of file LauLASSRes.cc.

Member Data Documentation

LauParameter* LauLASSRes::a_

private

LASS scattering length parameter.

Definition at line 178 of file LauLASSRes.hh.

Double_t LauLASSRes::cutOff_

private

LASS cut off.

Definition at line 181 of file LauLASSRes.hh.

Double_t LauLASSRes::mDaugDiff_

private

Difference between the daughter masses.

Definition at line 167 of file LauLASSRes.hh.

Double_t LauLASSRes::mDaugDiffSq_

private

Square of mDaugDiff.

Definition at line 169 of file LauLASSRes.hh.

Double_t LauLASSRes::mDaugSum_

private

Sum of the daughter masses.

Definition at line 163 of file LauLASSRes.hh.

Double_t LauLASSRes::mDaugSumSq_

private

Square of mDaugSum.

Definition at line 165 of file LauLASSRes.hh.

Double_t LauLASSRes::q0_

private

Decay momentum of either daughter in the resonance rest frame.

Definition at line 161 of file LauLASSRes.hh.

LauParameter* LauLASSRes::r_

private

LASS effective range parameter.

Definition at line 176 of file LauLASSRes.hh.

Double_t LauLASSRes::resMass_

private

The resonance mass.

Definition at line 171 of file LauLASSRes.hh.

Double_t LauLASSRes::resMassSq_

private

Square of the resonance mass.

Definition at line 173 of file LauLASSRes.hh.

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

inc/LauLASSRes.hh
src/LauLASSRes.cc

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation