Abstract class for defining type for resonance amplitude models (Breit-Wigner, Flatte etc.) More...

#include <LauAbsResonance.hh>

Inheritance diagram for LauAbsResonance:

Public Types
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...

Public Member Functions
	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 void	initialise ()=0
	Initialise the model. More...

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

virtual LauResonanceModel	getResonanceModel () const =0
	Get the resonance model type. 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	setResonanceParameter (const TString &name, const Double_t value)
	Set value of the various parameters. 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
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...

virtual LauComplex	resAmp (Double_t mass, Double_t spinTerm)=0
	Complex resonant amplitude. More...

Private Attributes
const LauDaughters *	daughters_
	Information on the particles. More...

TString	nameParent_
	Parent name. More...

TString	nameDaug1_
	Daughter 1 name. More...

TString	nameDaug2_
	Daughter 2 name. More...

TString	nameBachelor_
	Bachelor name. More...

Int_t	chargeParent_
	Parent charge. More...

Int_t	chargeDaug1_
	Daughter 1 charge. More...

Int_t	chargeDaug2_
	Daughter 2 charge. More...

Int_t	chargeBachelor_
	Bachelor charge. More...

Double_t	massParent_
	Parent mass. More...

Double_t	massDaug1_
	Daughter 1 mass. More...

Double_t	massDaug2_
	Daughter 2 mass. More...

Double_t	massBachelor_

TString	resName_
	Resonance name. More...

Double_t	resMass_
	Resonance mass. More...

Double_t	resWidth_
	Resonance width. More...

Int_t	resSpin_
	Resonance spin. More...

Int_t	resCharge_
	Resonance charge. More...

Int_t	resPairAmpInt_
	DP axis identifier. More...

Double_t	parR_
	Radius of the barrier for parent decay. More...

Double_t	resR_
	Radius of the barrier for resonance decay. More...

BarrierType	barrierType_
	Model to be used for the form factor. More...

Bool_t	flipHelicity_
	Boolean to flip helicity. More...

Bool_t	ignoreMomenta_
	Boolean to ignore q_ and p_ in spinTerm. More...

Double_t	q_
	Daughter momentum in resonance rest frame. More...

Double_t	p_
	Bachelor momentum in resonance rest frame. More...

Double_t	pstar_
	Bachelor momentum in parent rest frame. More...

Detailed Description

Abstract class for defining type for resonance amplitude models (Breit-Wigner, Flatte etc.)

Abstract Class for defining the type for all classes used to model resonances in the Dalitz plot, such as Breit-Wigner functions. In addition, some common functionality is implemented, including data such as the mass and width of the desired state.

Definition at line 34 of file LauAbsResonance.hh.

Member Enumeration Documentation

enum LauAbsResonance::BarrierType

Define the allowed types of barrier factors.

Enumerator
BWBarrier	Blatt-Weisskopf barrier factor (for use when momentum terms not used in angular term)
BWPrimeBarrier	Blatt-Weisskopf barrier factor (for use when momentum terms are used in angular term) - the default
ExpBarrier	expoential barrier factor (mostly used for virtual contributions)

Definition at line 60 of file LauAbsResonance.hh.

enum LauAbsResonance::LauResonanceModel

Define the allowed resonance types.

Enumerator
BW	simple Breit-Wigner
RelBW	relativistic Breit-Wigner
GS	a modified Breit-Wigner from Gounaris-Sakurai
Flatte	Flatte or coupled-channel Breit-Wigner
Sigma	special shape for the sigma or f_0(600)
Kappa	special shape for the kappa, a low-mass Kpi scalar
Dabba	special shape for the dabba, a low-mass Dpi scalar
LASS	the LASS amplitude to describe the Kpi S-wave
LASS_BW	the resonant part of the LASS amplitude
LASS_NR	the nonresonant part of the LASS amplitude
KMatrix	S-wave description using K-matrix and P-vector
FlatNR	a uniform nonresonant amplitude
NRModel	a theoretical model nonresonant amplitude
BelleNR	an empirical exponential nonresonant amplitude
PowerLawNR	an empirical power law nonresonant amplitude
BelleSymNR	an empirical exponential nonresonant amplitude for symmetrised DPs
TaylorNR	an empirical Taylor expansion nonresonant amplitude for symmetrised DPs
PolNR	an empirical polynomial nonresonant amplitude

Definition at line 38 of file LauAbsResonance.hh.

Constructor & Destructor Documentation

LauAbsResonance::LauAbsResonance	(	const 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 35 of file LauAbsResonance.cc.

LauAbsResonance::~LauAbsResonance ( )

virtual

Destructor.

Definition at line 82 of file LauAbsResonance.cc.

Member Function Documentation

LauComplex LauAbsResonance::amplitude ( const LauKinematics * kinematics )

virtual

Calculate the complex amplitude.

Parameters

[in] kinematics the kinematic variables of the current event

Returns: the complex amplitude

Reimplemented in LauBelleSymNR, LauNRAmplitude, LauFlatNR, LauKMatrixProdPole, and LauKMatrixProdSVP.

Definition at line 86 of file LauAbsResonance.cc.

void LauAbsResonance::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.

Negative values wil be ignored, so if, for example, you want to only change the spin you can provide negative values for the mass and width

Parameters

[in]	newMass	new value of the resonance mass
[in]	newWidth	new value of the resonance width
[in]	newSpin	new value of the resonance spin

Definition at line 172 of file LauAbsResonance.cc.

Bool_t LauAbsResonance::flipHelicity ( ) const

inline

Get the helicity flip flag.

Returns: the flip helicity flag

Definition at line 139 of file LauAbsResonance.hh.

void LauAbsResonance::flipHelicity ( Bool_t boolean )

inline

Set the helicity flip flag.

Parameters

[in] boolean the helicity flip status

Definition at line 145 of file LauAbsResonance.hh.

BarrierType LauAbsResonance::getBarrierType ( ) const

inlineprotected

Get the form factor model.

Definition at line 229 of file LauAbsResonance.hh.

Int_t LauAbsResonance::getCharge ( ) const

inline

Get the charge of the resonance.

Returns: the resonance charge

Definition at line 121 of file LauAbsResonance.hh.

Int_t LauAbsResonance::getChargeBachelor ( ) const

protected

Get the charge of the bachelor daughter.

Definition at line 308 of file LauAbsResonance.cc.

Int_t LauAbsResonance::getChargeDaug1 ( ) const

protected

Get the charge of daughter 1.

Definition at line 272 of file LauAbsResonance.cc.

Int_t LauAbsResonance::getChargeDaug2 ( ) const

protected

Get the charge of daughter 2.

Definition at line 290 of file LauAbsResonance.cc.

Int_t LauAbsResonance::getChargeParent ( ) const

protected

Get the Charge of the parent particle.

Definition at line 260 of file LauAbsResonance.cc.

const LauDaughters* LauAbsResonance::getDaughters ( ) const

inlineprotected

Access the daughters object.

Definition at line 232 of file LauAbsResonance.hh.

Double_t LauAbsResonance::getMass ( ) const

inline

Get the mass of the resonance.

Returns: the resonance mass

Definition at line 127 of file LauAbsResonance.hh.

Double_t LauAbsResonance::getMassBachelor ( ) const

protected

Get the mass of the bachelor daughter.

Definition at line 242 of file LauAbsResonance.cc.

Double_t LauAbsResonance::getMassDaug1 ( ) const

protected

Get the mass of daughter 1.

Definition at line 206 of file LauAbsResonance.cc.

Double_t LauAbsResonance::getMassDaug2 ( ) const

protected

Get the mass of daughter 2.

Definition at line 224 of file LauAbsResonance.cc.

Double_t LauAbsResonance::getMassParent ( ) const

protected

Get the parent particle mass.

Definition at line 194 of file LauAbsResonance.cc.

TString LauAbsResonance::getNameBachelor ( ) const

protected

Get the name of the daughter that does not originate form the resonance.

Definition at line 374 of file LauAbsResonance.cc.

TString LauAbsResonance::getNameDaug1 ( ) const

protected

Get the name of the first daughter of the resonance.

Definition at line 338 of file LauAbsResonance.cc.

TString LauAbsResonance::getNameDaug2 ( ) const

protected

Get the name of the second daughter of the resonance.

Definition at line 356 of file LauAbsResonance.cc.

TString LauAbsResonance::getNameParent ( ) const

protected

Get the name of the parent particle.

Definition at line 326 of file LauAbsResonance.cc.

Double_t LauAbsResonance::getP ( ) const

inlineprotected

Get the current value of the bachelor momentum in the resonance rest frame.

Definition at line 220 of file LauAbsResonance.hh.

Int_t LauAbsResonance::getPairInt ( ) const

inline

Get the integer to identify which DP axis the resonance belongs to.

Returns: the DP axis identification number, the ID of the bachelor

Definition at line 109 of file LauAbsResonance.hh.

Double_t LauAbsResonance::getParBWRadius ( ) const

inlineprotected

Get the radius of the centrifugal barrier for the parent decay.

Definition at line 225 of file LauAbsResonance.hh.

Double_t LauAbsResonance::getPstar ( ) const

inlineprotected

Get the current value of the bachelor momentum in the parent rest frame.

Definition at line 222 of file LauAbsResonance.hh.

Double_t LauAbsResonance::getQ ( ) const

inlineprotected

Get the current value of the daughter momentum in the resonance rest frame.

Definition at line 218 of file LauAbsResonance.hh.

Double_t LauAbsResonance::getResBWRadius ( ) const

inlineprotected

Get the radius of the centrifugal barrier for the resonance decay.

Definition at line 227 of file LauAbsResonance.hh.

virtual LauResonanceModel LauAbsResonance::getResonanceModel ( ) const

pure virtual

Get the resonance model type.

Returns: the resonance model type

Implemented in LauBelleSymNR, LauNRAmplitude, LauFlatNR, LauBelleNR, LauKMatrixProdPole, LauKMatrixProdSVP, LauPolNR, LauKappaRes, LauBreitWignerRes, LauDabbaRes, LauFlatteRes, LauGounarisSakuraiRes, LauLASSBWRes, LauLASSNRRes, LauLASSRes, LauRelBreitWignerRes, and LauSigmaRes.

const TString& LauAbsResonance::getResonanceName ( ) const

inline

Get the name of the resonance.

Returns: the resonance name

Definition at line 103 of file LauAbsResonance.hh.

Int_t LauAbsResonance::getSpin ( ) const

inline

Get the spin of the resonance.

Returns: the resonance spin

Definition at line 115 of file LauAbsResonance.hh.

Double_t LauAbsResonance::getWidth ( ) const

inline

Get the width of the resonance.

Returns: the resonance width

Definition at line 133 of file LauAbsResonance.hh.

Bool_t LauAbsResonance::ignoreMomenta ( ) const

inline

Get the ignore momenta flag.

Returns: the ignore momenta flag

Definition at line 151 of file LauAbsResonance.hh.

void LauAbsResonance::ignoreMomenta ( Bool_t boolean )

inline

Set the ignore p_ and q_ flag.

Parameters

[in] boolean the ignore momenta status

Definition at line 157 of file LauAbsResonance.hh.

virtual void LauAbsResonance::initialise ( )

pure virtual

Initialise the model.

Implemented in LauBelleNR, LauBelleSymNR, LauNRAmplitude, LauPolNR, LauKappaRes, LauBreitWignerRes, LauDabbaRes, LauFlatteRes, LauGounarisSakuraiRes, LauLASSBWRes, LauLASSNRRes, LauLASSRes, LauRelBreitWignerRes, LauSigmaRes, LauFlatNR, LauKMatrixProdPole, and LauKMatrixProdSVP.

virtual LauComplex LauAbsResonance::resAmp	(	Double_t	mass,
		Double_t	spinTerm
	)

protectedpure virtual

Complex resonant amplitude.

Parameters

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

Implemented in LauLASSBWRes, LauLASSNRRes, LauLASSRes, LauKappaRes, LauSigmaRes, LauDabbaRes, LauFlatteRes, LauBelleSymNR, LauBelleNR, LauPolNR, LauGounarisSakuraiRes, LauRelBreitWignerRes, LauNRAmplitude, LauFlatNR, LauBreitWignerRes, LauKMatrixProdPole, and LauKMatrixProdSVP.

virtual void LauAbsResonance::setBarrierRadii	(	const Double_t	resRadius,
		const Double_t	parRadius,
		const BarrierType	type
	)

inlinevirtual

Set the form factor model and parameters.

Parameters

[in]	resRadius	the radius of the barrier for the resonance decay
[in]	parRadius	the radius of the barrier for the parent decay
[in]	type	the form-factor model

Reimplemented in LauGounarisSakuraiRes, and LauRelBreitWignerRes.

Definition at line 184 of file LauAbsResonance.hh.

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

virtual

Set value of the various parameters.

Parameters

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

Reimplemented in LauLASSBWRes, LauLASSNRRes, LauLASSRes, LauBelleSymNR, LauBelleNR, LauKappaRes, LauDabbaRes, LauFlatteRes, and LauSigmaRes.

Definition at line 188 of file LauAbsResonance.cc.

Member Data Documentation

BarrierType LauAbsResonance::barrierType_

private

Model to be used for the form factor.

Definition at line 289 of file LauAbsResonance.hh.

Int_t LauAbsResonance::chargeBachelor_

private

Bachelor charge.

Definition at line 261 of file LauAbsResonance.hh.

Int_t LauAbsResonance::chargeDaug1_

private

Daughter 1 charge.

Definition at line 257 of file LauAbsResonance.hh.

Int_t LauAbsResonance::chargeDaug2_

private

Daughter 2 charge.

Definition at line 259 of file LauAbsResonance.hh.

Int_t LauAbsResonance::chargeParent_

private

Parent charge.

Definition at line 255 of file LauAbsResonance.hh.

const LauDaughters* LauAbsResonance::daughters_

private

Information on the particles.

Definition at line 243 of file LauAbsResonance.hh.

Bool_t LauAbsResonance::flipHelicity_

private

Boolean to flip helicity.

Definition at line 292 of file LauAbsResonance.hh.

Bool_t LauAbsResonance::ignoreMomenta_

private

Boolean to ignore q_ and p_ in spinTerm.

Definition at line 294 of file LauAbsResonance.hh.

Double_t LauAbsResonance::massBachelor_

private

Definition at line 270 of file LauAbsResonance.hh.

Double_t LauAbsResonance::massDaug1_

private

Daughter 1 mass.

Definition at line 266 of file LauAbsResonance.hh.

Double_t LauAbsResonance::massDaug2_

private

Daughter 2 mass.

Definition at line 268 of file LauAbsResonance.hh.

Double_t LauAbsResonance::massParent_

private

Parent mass.

Definition at line 264 of file LauAbsResonance.hh.

TString LauAbsResonance::nameBachelor_

private

Bachelor name.

Definition at line 252 of file LauAbsResonance.hh.

TString LauAbsResonance::nameDaug1_

private

Daughter 1 name.

Definition at line 248 of file LauAbsResonance.hh.

TString LauAbsResonance::nameDaug2_

private

Daughter 2 name.

Definition at line 250 of file LauAbsResonance.hh.

TString LauAbsResonance::nameParent_

private

Parent name.

Definition at line 246 of file LauAbsResonance.hh.

Double_t LauAbsResonance::p_

private

Bachelor momentum in resonance rest frame.

Definition at line 299 of file LauAbsResonance.hh.

Double_t LauAbsResonance::parR_

private

Radius of the barrier for parent decay.

Definition at line 285 of file LauAbsResonance.hh.

Double_t LauAbsResonance::pstar_

private

Bachelor momentum in parent rest frame.

Definition at line 301 of file LauAbsResonance.hh.

Double_t LauAbsResonance::q_

private

Daughter momentum in resonance rest frame.

Definition at line 297 of file LauAbsResonance.hh.

Int_t LauAbsResonance::resCharge_

private

Resonance charge.

Definition at line 281 of file LauAbsResonance.hh.

Double_t LauAbsResonance::resMass_

private

Resonance mass.

Definition at line 275 of file LauAbsResonance.hh.

TString LauAbsResonance::resName_

private

Resonance name.

Definition at line 273 of file LauAbsResonance.hh.

Int_t LauAbsResonance::resPairAmpInt_

private

DP axis identifier.

Definition at line 283 of file LauAbsResonance.hh.

Double_t LauAbsResonance::resR_

private

Radius of the barrier for resonance decay.

Definition at line 287 of file LauAbsResonance.hh.

Int_t LauAbsResonance::resSpin_

private

Resonance spin.

Definition at line 279 of file LauAbsResonance.hh.

Double_t LauAbsResonance::resWidth_

private

Resonance width.

Definition at line 277 of file LauAbsResonance.hh.

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

inc/LauAbsResonance.hh
src/LauAbsResonance.cc

Public Types

Public Member Functions

Protected Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation