Journal
NUCLEAR PHYSICS A
Volume 851, Issue 1, Pages 58-98Publisher
ELSEVIER
DOI: 10.1016/j.nuclphysa.2010.12.010
Keywords
Baryon spectroscopy; Resonance separation; Julich model
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Elastic pi N 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. (C) 2010 Elsevier B.V. All rights reserved.
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