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arXiv · 1803.09644

Effect of thresholds on the width of three-body resonances

H. Garcilazo·A. Valcarce
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Abstract

It has been recently reported an intriguing theoretical result of a narrow three-body resonance with a large available phase space. The resonance was reported in the $N\Lambda\Lambda-\Xi NN$ system near the $\Xi d$ threshold, having a very small width in spite of the open $N\Lambda\Lambda$ channel lying around 23 MeV below the $\Xi NN$ channel. We use first-order perturbation theory as a plausible argument to explain this behavior. We apply our result to realistic local interactions. Other systems involving several thresholds are likely to follow the same behavior.

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H. Garcilazo, A. Valcarce. 2018-03-23. Effect of thresholds on the width of three-body resonances. https://doi.org/10.1016/j.physletb.2017.06.066

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