\begin{document}$\Lambda p$\end{document} cross section (invariant mass spectrum) at the opening of the \begin{document}$\Sigma N$\end{document} channel. The mass splitting between the \begin{document}$\Sigma$\end{document} baryons together with the angular momentum coupling in the \begin{document}$^3S_1$\end{document}-\begin{document}$^3D_1$\end{document} partial wave imply that, in principle, up to six channels are involved. Utilizing hyperon-nucleon potentials that provide an excellent description of the available low-energy \begin{document}$\Lambda p$\end{document} and \begin{document}$\Sigma N$\end{document} scattering data, the shape of the resulting \begin{document}$\Lambda p$\end{document} cross section is discussed and the poles near the \begin{document}$\Sigma N$\end{document} threshold are determined. Evidence for a strangeness \begin{document}$S=-1$\end{document} dibaryon is provided, in the form of a (unstable) \begin{document}$\Sigma N$\end{document} bound state in the vicinity of the \begin{document}$\Sigma N$\end{document} threshold. Predictions for level shifts and widths of \begin{document}$\Sigma^-p$\end{document} atomic states are given."> On the structure in the Λ<i>N</i> cross section at the Σ<i>N</i> threshold -
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