Model-independent resonance parameter extraction using the trace of K and T matrices

Abstract

A model-independent method for the determination of Breit-Wigner resonance parameters is presented. The method is based on eliminating the dependence on the choice of channel basis by analyzing the trace of the K and T matrices in the coupled-channel formalism, rather than individual matrix elements of the multichannel scattering matrix.

6 pages, 16 figures

References in corpus (4)

• Baryon Resonance Extraction from piN Data using a Unitary Multichannel Model
• Dispersion Relation Constrained Partial Wave Analysis of piN Elastic and piN\to\etaN Scattering Data: The Baryon Spectrum
• pi N --> eta N and eta N --> eta N partial wave T-matrices in a coupled, three channel model
• Nonet Classification of Scalar/Isoscalar Resonances below 1900 MeV: the Existence of an Extra Scalar State in the Region 1200-1600 MeV

Cited by in corpus (15)

• Baryon spectroscopy
• Progress Toward Understanding Baryon Resonances
• Analytic properties of the scattering amplitude and resonances parameters in a meson exchange model
• Parameterization dependence of T matrix poles and eigenphases from a fit to piN elastic scattering data
• P-wave excited baryons from pion- and photo-induced hyperon production
• Singularity structure of the pi N scattering amplitude in a meson-exchange model up to energies W < 2.0 GeV
• Strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances to pseudoscalar mesons and octet baryons
• Doubly charmed multibaryon systems
• Resonance parameters from K-matrix and T-matrix poles
• Width of a two-body coupled-channel resonance
• Toward a unified description of hadro- and photoproduction: S-wave pi- and eta-photoproduction amplitudes
• Differential Cross Sections for Neutron-Proton Scattering in the Region of the $d^{\ast }(2380)$ Dibaryon Resonance
• Hidden and open heavy-flavor hadronic states
• Exotic Heavy Hadrons
• Potential dangers when phase shifts are used as a link between experiment and QCD