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arXiv · 0911.3288

The optical model potential of the $Σ$ hyperon in nuclear matter

J. Dabrowski·J. Rozynek
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Abstract

We present our attempts to determine the optical model potential $U_Σ= V_Σ-iW_Σ$ of the $Σ$ hyperon in nuclear matter. We analyze the following sources of information on $U_Σ$: $ΣN$ scattering, $Σ^-$ atoms, and final state interaction of $Σ$ hyperons in the $(π,K^+)$ and $(K^-.π)$ reactions on nuclear targets. We conclude that $V_Σ$ is repulsive inside the nucleus and has a shallow a tractive pocket at the nuclear surface. These features of $V_Σ$ are consistent with the Nijmegen model F of the hyperon-nucleon interaction.

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J. Dabrowski, J. Rozynek. 2009-11-17. The optical model potential of the $Σ$ hyperon in nuclear matter. https://arxiv.org/abs/0911.3288

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