Isospin mixing effects in low-energy KN - π interaction
Abstract
New strong coupled-channel KN - π 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 (1405) resonance was considered.
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