Meson-baryon interaction in the meson exchange picture
M. D\"oring

TL;DR
This paper presents a unified, unitary coupled-channels approach to meson-baryon interactions, describing piN scattering and related reactions with SU(3) symmetry, and analyzes the amplitude pole structure from experimental data.
Contribution
It introduces a novel combined analysis of piN scattering and related reactions using a unitary coupled-channels framework respecting analyticity and SU(3) symmetry.
Findings
Good agreement with experimental angular distributions and polarization data
Extraction of pole structures from analytic continuation of amplitudes
Demonstration of SU(3) symmetry relations in meson-baryon interactions
Abstract
This is the contribution to the proceedings of the MENU 2010 conference. The recent work of Ref. [7] is summarized. Elastic piN scattering and the reaction pi^+ p --> K^+ Sigma^+ are described simultaneously in a unitary coupled-channels approach which respects analyticity. SU(3) flavor symmetry is used to relate the t- and u- channel exchanges that drive the meson-baryon interaction in the different channels. Angular distributions, polarizations, and spin-rotation parameters are compared with available experimental data. The pole structure of the amplitudes is extracted from the analytic continuation.
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