Low-Energy<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>-Meson Interactions in Hydrogen

Low-energy ${K}^{\ensuremath{-}}$-meson interactions in hydrogen are studied in the following channels: ${K}^{\ensuremath{-}}+p\ensuremath{\rightarrow}{K}^{\ensuremath{-}}+p,$ ${K}^{\ensuremath{-}}+p\ensuremath{\rightarrow}{\ensuremath{\Sigma}}^{\ensuremath{-}}+{\ensuremath{\pi}}^{+},$ ${K}^{\ensuremath{-}}+p\ensuremath{\rightarrow}{\ensuremath{\Sigma}}^{+}+{\ensuremath{\pi}}^{\ensuremath{-}},$ and cross sections, as a function of momentum, are presented in the region of 60-300 MeV/c ${K}^{\ensuremath{-}}$ laboratory momentum. These cross sections, combined with existing data, are used to fit the zero-effective-range theory of Dalitz and Tuan. Two possible solutions are obtained; the preferred one agrees with previous higher energy data. The favored solution also suggests an $S$-wave bound state at 1410 MeV, which could be associated with the ${{Y}_{0}}^{*}$ at 1405 MeV whose spin is still undetermined. Various properties of the two solutions are presented for ${K}^{\ensuremath{-}}p$ interactions and ${{K}_{2}}^{0}p$ interactions.

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