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

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

2008-10-31

arxiv.org/abs/0810.5677v2

Phys.Rev.C79:035202,2009

Physics

Nuclear Physics

Nuclear Theory

24 pages, 5 tables, 4 figures; one sentence was changed and one reference added

Scientific paper

10.1103/PhysRevC.79.035202

New strong coupled-channel $\bar{K}N - \pi \Sigma$ 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 $\Lambda(1405)$ resonance was considered.

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