$\Xi^- t$ quasibound state instead of $\Lambda\Lambda nn$ bound state

H. Garcilazo; A. Valcarce; J. Vijande

doi:10.1088/1674-1137/44/2/024102

$\Xi^- t$ quasibound state instead of $\Lambda\Lambda nn$ bound state

Nuclear Theory 2019-11-27 v1 High Energy Physics - Phenomenology

Authors: H. Garcilazo , A. Valcarce , J. Vijande

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Abstract

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

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@article{arxiv.1911.07194,
  title  = {$\Xi^- t$ quasibound state instead of $\Lambda\Lambda nn$ bound state},
  author = {H. Garcilazo and A. Valcarce and J. Vijande},
  journal= {arXiv preprint arXiv:1911.07194},
  year   = {2019}
}

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16 pages. To be published in Chinese Physics C

$\Xi^- t$ quasibound state instead of $\Lambda\Lambda nn$ bound state

Abstract

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