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arXiv · 1009.3781

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

M. Döring·C. Hanhart·F. Huang·S. Krewald·U. -G. Meißner·D. Rönchen
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Abstract

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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M. Döring, C. Hanhart, F. Huang, S. Krewald, U. -G. Meißner, D. Rönchen. 2010-12-29. The reaction pi+ p --> K+ Sigma+ in a unitary coupled-channels model. https://doi.org/10.1016/j.nuclphysa.2010.12.010

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