Chiral model for $\bar{K}N$ interactions and its pole content

Details Chiral model for $\bar{K}N$ interactions and its pole content Chiral model for $\bar{K}N$ interactions and its pole content

2010-11-09

arxiv.org/abs/1011.2031v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

contribution to the Chiral10 workshop, Valencia (Spain), June 21-24, 2010

Scientific paper

We use chirally motivated effective meson-baryon potentials to describe the low energy $\bar{K}N$ data including the characteristics of kaonic hydrogen. Our results are examined in comparison with other approaches based on the unitarity and dispersion relation for the inverse of the T-matrix. We demonstrate that the movements of the poles generated by the model upon varying the model parameters can serve as a tool to get additional insights on the dynamics of the strongly coupled $\pi\Sigma$-$\bar{K}N$ system.

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