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arXiv · 1911.07194

$Ξ^- t$ quasibound state instead of $ΛΛnn$ bound state

H. Garcilazo·A. Valcarce·J. Vijande
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Abstract

We study the coupled $ΛΛnn-Ξ^- pnn$ system to check whether the inclusion of channel coupling is able to bind the $ΛΛnn$ system. We use a separable potential three-body model of the coupled $ΛΛnn - Ξ^- pnn$ system as well as a variational four-body calculation with realistic interactions. Our results exclude the possibility of a $ΛΛnn$ bound state by a large margin. However, we have found a $Ξ^- t$ quasibound state above the $ΛΛnn$ threshold.

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H. Garcilazo, A. Valcarce, J. Vijande. 2019-11-17. $Ξ^- t$ quasibound state instead of $ΛΛnn$ bound state. https://doi.org/10.1088/1674-1137%2F44%2F2%2F024102

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