The reaction pi+ p --> K+ Sigma+ in a unitary coupled-channels model

Details The reaction pi+ p --> K+ Sigma+ in a unitary coupled-channels model The reaction pi+ p --> K+ Sigma+ in a unitary coupled-channels model

2010-09-20

arxiv.org/abs/1009.3781v2

Nucl.Phys.A851:58-98,2011

Physics

Nuclear Physics

Nuclear Theory

43 pages, 15 figures, Version accepted for publication in Nuclear Physics A

Scientific paper

10.1016/j.nuclphysa.2010.12.010

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.

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