The reaction pi+ p --> K+ Sigma+ in a unitary coupled-channels model
arXiv:1009.3781 · doi:10.1016/j.nuclphysa.2010.12.010
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.
43 pages, 15 figures, Version accepted for publication in Nuclear Physics A