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arXiv · 0810.5677

Isospin mixing effects in low-energy $\bar{K}N - πΣ$ interaction

J. Révai·N. V. Shevchenko
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Abstract

New strong coupled-channel $\bar{K}N - πΣ$ potential, reproducing all existing experimental data and suitable for using in an accurate few-body calculations, is constructed. Isospin breaking effects of direct inclusion of the Coulomb interaction and using of physical masses in calculations are investigated. The $1 s$ level shift and width of kaonic hydrogen, consistent with the scattering data, was obtained and the corresponding exact strong $K^- p$ scattering length was calculated. One- and two-pole form of $Λ(1405)$ resonance was considered.

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J. Révai, N. V. Shevchenko. 2008-11-06. Isospin mixing effects in low-energy $\bar{K}N - πΣ$ interaction. https://doi.org/10.1103/physrevc.79.035202

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