AmpGen::Lineshape Namespace Reference

Namespace that contains all lineshapes, i.e. More...

Classes
class	Base
class	Bugg
class	BW
	Simple two-body Breit-Wigner lineshape that describes relatively narrow, isolated resonances that couple to a single channel / orbital configuration. More...
class	CoupledChannel
	Description of a resonance that decays to multiple two and three-body final states. More...
class	DecaySpline
class	EtaDalitz
	Empirical Dalitz plot distribution for \( \eta \rightarrow \pi^{+}\pi^{-}\pi^{0} \). More...
class	ExpFF
	Exponential form-factor of type \( e^{ - q^2 R^2 } \). More...
class	Factory
class	Flatte
	Lineshape to describe resonances with coupled channels such as \(f_{0}(980)^{0} / a_{0}(980) \). More...
class	FOCUS
	K matrix amplitudes used for I=1/2 and I=3/2 in the description of the \( K\pi \) S-wave in the analysis of \( D^{+}\rightarrow K^{-}\pi^{+}\pi^{+}\) https://arxiv.org/abs/0705.2248. More...
class	FormFactor
class	FormFactorSpline
class	Gaussian
	Gaussian shape for (relatively) long lived states that are limited by experimental resolution, rather than natural width. More...
class	GenericKmatrix
	Implementation of a generic K-matrix. More...
class	GLASS
	Generalised description of the \( K\pi\) S-wave, taken from BABAR / BELLE analysis of \( D^{0} \to K_{S}^{0} \pi^{+} \pi^{-} \) https://journals.aps.org/prd/pdf/10.1103/PhysRevD.98.112012. More...
class	GounarisSakurai
	Gounaris-Sakurai lineshape models dispersive corrections to the \(I=1,J=1\) \(\pi\pi\) propagator. More...
class	GSpline
	Lineshape with an arbitrary running width determined from a spline. More...
class	InelasticSpline
class	Isotensor
class	kMatrixSimple
	Simple and flexible K matrix that implements a variable number of scalar channels and poles. More...
class	LASS
	Description of the \( K\pi \) S-wave, based on the fits to scattering data. More...
class	MIPWA
	Model-Independent Partial Wave parameterisation using cubic splines. More...
class	None
class	NonRelBW
	Nonrelativistic Breit-Wigner lineshape. More...
class	PALANO
	I=1/2 and I=3/2 K Matrices used in the description of the \( K\pi\) S-wave in the analysis of \(\eta_{c}\rightarrow K^{+} K^{-} \pi^{0}\) https://arxiv.org/abs/1701.04881. More...
class	Photon
class	Poly
	Polynominal shape \( \mathcal{A}(s) = \sqrt{ \sum_{ij} c_{ij} s^{i} (s^\prime)^{j} } \) where the sum is to lineshapeModifier::Degree, and the free parameters of the shape are lineshapeModifier_cij. More...
class	PolyNR
	Polynominal shape \( \mathcal{A}(s) = \sum^n_i c_i s^{i} \) where the sum is to lineshapeModifier::Degree, and the free parameters of the shape are lineshapeModifier_ci. More...
class	SBW
	Breit-Wigner lineshape with fixed width. More...
class	TD
	(Linear) time dependence More...

Functions
	DECLARE_LINESHAPE (kMatrix)
	Anisovich-Sarantsev Isoscalar K-matrix from https://arxiv.org/abs/hep-ph/0204328.

Detailed Description

propagators for describing amplitudes and phases for resonances (and nonresonant) contributions to a total amplitude.