Comparing partial-wave amplitude parametrization with dynamical models of meson-nucleon scattering
Nuclear Theory
2011-03-02 v2
Abstract
Relationships between partial-wave amplitude parametrizations, in particular the Chew-Mandelstam approach, and dynamical coupled-channel models are established and investigated. A bare pole corresponding to the Delta(1232) resonance, found in a recent dynamical-model fit to pion- and omega-meson production reactions, compares closely to one found in a unitary multichannel partial-wave amplitude parametrization of SAID. The model dependence of the bare pole precludes a direct connection between the approaches but is suggestive that the dynamical description and the phenomenological parametrization are closely related.
Cite
@article{arxiv.1101.0621,
title = {Comparing partial-wave amplitude parametrization with dynamical models of meson-nucleon scattering},
author = {Mark W. Paris and Ron L. Workman},
journal= {arXiv preprint arXiv:1101.0621},
year = {2011}
}
Comments
6 pages, 2 figures; 2nd version with minor corrections