Class for defining the NR amplitude model. More...

#include <LauNRAmplitude.hh>

Inheritance diagram for LauNRAmplitude:

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

virtual	~LauNRAmplitude ()
	Destructor. More...

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

virtual LauComplex	amplitude (const LauKinematics *kinematics)
	Complex resonant amplitude. More...

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

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
virtual LauComplex	resAmp (Double_t mass, Double_t spinTerm)
	This is not meant to be called. More...

virtual Double_t	f (Double_t s, Double_t c, Double_t p) const
	Evaluate the expression 1.0 / (1.0 + TMath::Exp( c * (s-p) )) 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 Attributes
Double_t	d_
	Parameter from arXiv:0709.0075v1 [hep-ph]. More...

Double_t	c1_
	Parameter from arXiv:0709.0075v1 [hep-ph]. More...

Double_t	c2_
	Parameter from arXiv:0709.0075v1 [hep-ph]. More...

Double_t	p1_
	Parameter from arXiv:0709.0075v1 [hep-ph]. More...

Double_t	p2_
	Parameter from arXiv:0709.0075v1 [hep-ph]. 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 NR amplitude model.

Class for defining the NR amplitude model. Formulae and data values from arXiv:0709.0075v1 [hep-ph].

Definition at line 33 of file LauNRAmplitude.hh.

Constructor & Destructor Documentation

LauNRAmplitude::LauNRAmplitude	(	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 22 of file LauNRAmplitude.cc.

LauNRAmplitude::~LauNRAmplitude ( )

virtual

Destructor.

Definition at line 33 of file LauNRAmplitude.cc.

Member Function Documentation

LauComplex LauNRAmplitude::amplitude ( const LauKinematics * kinematics )

virtual

Complex resonant amplitude.

/param [in] kinematics kinematic parameters of the parent and daughter particles /return the complex amplitude

Reimplemented from LauAbsResonance.

Definition at line 41 of file LauNRAmplitude.cc.

Double_t LauNRAmplitude::f	(	Double_t	s,
		Double_t	c,
		Double_t	p
	)		const

protectedvirtual

Evaluate the expression 1.0 / (1.0 + TMath::Exp( c * (s-p) ))

Parameters

[in]	s	invariant mass squared
[in]	c	parameter from arXiv:0709.0075v1 [hep-ph]
[in]	p	parameter from arXiv:0709.0075v1 [hep-ph]

Returns: the value of the expression 1.0 / (1.0 + TMath::Exp( c * (s-p) ))

Definition at line 68 of file LauNRAmplitude.cc.

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

inlinevirtual

Get the resonance model type.

Returns: the resonance model type

Implements LauAbsResonance.

Definition at line 67 of file LauNRAmplitude.hh.

void LauNRAmplitude::initialise ( )

virtual

Initialise the model.

Implements LauAbsResonance.

Definition at line 37 of file LauNRAmplitude.cc.

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

protectedvirtual

This is not meant to be called.

Implements LauAbsResonance.

Definition at line 61 of file LauNRAmplitude.cc.