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

#include <LauFlatteRes.hh>

Inheritance diagram for LauFlatteRes:

Public Member Functions
	LauFlatteRes (TString resName, Double_t resMass, Double_t resWidth, Int_t resSpin, Int_t resCharge, Int_t resPairAmpInt, const LauDaughters *daughters)
	Constructor. More...

virtual	~LauFlatteRes ()
	Destructor. More...

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

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

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

Public Member Functions inherited from LauAbsResonance
	LauAbsResonance (const TString &resName, Double_t resMass, Double_t resWidth, Int_t resSpin, Int_t resCharge, Int_t resPairAmpInt, const LauDaughters *daughters)
	Constructor. More...

virtual	~LauAbsResonance ()
	Destructor. More...

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

const TString &	getResonanceName () 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...

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

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

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

void	ignoreMomenta (Bool_t boolean)
	Set the ignore p_ and q_ 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...

virtual void	setBarrierRadii (const Double_t resRadius, const Double_t parRadius, const BarrierType type)
	Set the form factor model and parameters. More...

Protected Member Functions
Double_t	getg1Parameter () const
	Get the g1 parameter. More...

Double_t	getg2Parameter () const
	Get the g2 parameter. More...

void	setGFactors (Double_t g1, Double_t g2)
	Set the constant g factors. More...

void	setg1Parameter (Double_t g1)
	Set the g1 parameter. More...

void	setg2Parameter (Double_t g2)
	Set the g2 parameter. 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	getParBWRadius () const
	Get the radius of the centrifugal barrier for the parent decay. More...

Double_t	getResBWRadius () const
	Get the radius of the centrifugal barrier for the resonance decay. More...

BarrierType	getBarrierType () const
	Get the form factor model. More...

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

Private Types
enum	FlattePartType { FlattePi, FlatteK }
	Define allowed types. More...

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

Double_t	g1_
	Constant factor (default value from BES data) More...

Double_t	g2_
	Constant factor (default value from BES data) More...

Double_t	mSumSq0_
	Defined as (mPi0+mPi0)*(mPi0+mPi0) More...

Double_t	mSumSq1_
	Defined as (mPi+mPi)*(mPi+mPi) More...

Double_t	mSumSq2_
	Defined as (mK+mK)*(mK+mK) More...

Double_t	mSumSq3_
	Defined as (mK0+mK0)*(mK0+mK0) More...

Additional Inherited Members
Public Types inherited from LauAbsResonance
enum	LauResonanceModel { BW, RelBW, GS, Flatte, Sigma, Kappa, Dabba, LASS, LASS_BW, LASS_NR, KMatrix, FlatNR, NRModel, BelleNR, PowerLawNR, BelleSymNR, TaylorNR, PolNR }
	Define the allowed resonance types. More...

enum	BarrierType { BWBarrier, BWPrimeBarrier, ExpBarrier }
	Define the allowed types of barrier factors. More...

Detailed Description

Class for defining the Flatte resonance model.

Class for defining the Flatte resonance model. For use with the f_0(980) resonance.

Definition at line 31 of file LauFlatteRes.hh.

Member Enumeration Documentation

enum LauFlatteRes::FlattePartType

private

Define allowed types.

Enumerator
FlattePi
FlatteK

Definition at line 108 of file LauFlatteRes.hh.

Constructor & Destructor Documentation

LauFlatteRes::LauFlatteRes	(	TString	resName,
		Double_t	resMass,
		Double_t	resWidth,
		Int_t	resSpin,
		Int_t	resCharge,
		Int_t	resPairAmpInt,
		const LauDaughters *	daughters
	)

Constructor.

Parameters

[in]	resName	the name of the resonance
[in]	resMass	the mass of the resonance
[in]	resWidth	the width of the resonance
[in]	resSpin	the spin of the resonance
[in]	resCharge	the charge of the resonance
[in]	resPairAmpInt	the number of the daughter not produced by the resonance
[in]	daughters	the daughter particles

Definition at line 23 of file LauFlatteRes.cc.

LauFlatteRes::~LauFlatteRes ( )

virtual

Destructor.

Definition at line 48 of file LauFlatteRes.cc.

Member Function Documentation

Double_t LauFlatteRes::getg1Parameter ( ) const

inlineprotected

Get the g1 parameter.

Returns: constant factor g1

Definition at line 72 of file LauFlatteRes.hh.

Double_t LauFlatteRes::getg2Parameter ( ) const

inlineprotected

Get the g2 parameter.

Returns: constant factor g2

Definition at line 78 of file LauFlatteRes.hh.

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

inlinevirtual

Get the resonance model type.

Returns: the resonance model type

Implements LauAbsResonance.

Definition at line 58 of file LauFlatteRes.hh.

void LauFlatteRes::initialise ( )

virtual

Initialise the model.

Implements LauAbsResonance.

Definition at line 52 of file LauFlatteRes.cc.

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

protectedvirtual

Complex resonant amplitude.

Parameters

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

Implements LauAbsResonance.

Definition at line 90 of file LauFlatteRes.cc.

void LauFlatteRes::setg1Parameter ( Double_t g1 )

inlineprotected

Set the g1 parameter.

Parameters

[in] g1 constant factor

Definition at line 91 of file LauFlatteRes.hh.

void LauFlatteRes::setg2Parameter ( Double_t g2 )

inlineprotected

Set the g2 parameter.

Parameters

[in] g2 constant factor

Definition at line 97 of file LauFlatteRes.hh.

void LauFlatteRes::setGFactors	(	Double_t	g1,
		Double_t	g2
	)

protected

Set the constant g factors.

Parameters

[in]	g1	gPiPi factor
[in]	g2	gKK factor

Definition at line 69 of file LauFlatteRes.cc.

void LauFlatteRes::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 75 of file LauFlatteRes.cc.

Member Data Documentation

Double_t LauFlatteRes::g1_

private

Constant factor (default value from BES data)

Definition at line 113 of file LauFlatteRes.hh.

Double_t LauFlatteRes::g2_

private

Constant factor (default value from BES data)

Definition at line 115 of file LauFlatteRes.hh.

Double_t LauFlatteRes::mSumSq0_

private

Defined as (mPi0+mPi0)*(mPi0+mPi0)

Definition at line 117 of file LauFlatteRes.hh.

Double_t LauFlatteRes::mSumSq1_

private

Defined as (mPi+mPi)*(mPi+mPi)

Definition at line 119 of file LauFlatteRes.hh.

Double_t LauFlatteRes::mSumSq2_

private

Defined as (mK+mK)*(mK+mK)

Definition at line 121 of file LauFlatteRes.hh.

Double_t LauFlatteRes::mSumSq3_

private

Defined as (mK0+mK0)*(mK0+mK0)

Definition at line 123 of file LauFlatteRes.hh.

Double_t LauFlatteRes::resMassSq_

private

Square of the resonance mass.

Definition at line 111 of file LauFlatteRes.hh.

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

inc/LauFlatteRes.hh
src/LauFlatteRes.cc

Public Member Functions

Protected Member Functions

Private Types

Private Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation