Effect of thresholds on the width of three-body resonances
H. Garcilazo, A. Valcarce
Physics Letters B · 2017
doi:10.1016/j.physletb.2017.06.066 (opens in a new tab)
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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 [1]. The resonance was reported in the NΛΛ−ΞNN system near the Ξd threshold, having a very small width in spite of the open NΛΛ channel lying around 23 MeV below the ΞNN 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.
Abstract licence: CC BY
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