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arXiv · 2112.05622

$β^-{\rm p}$ and $β^-α$ decay of the $^{11}$Be neutron halo ground state

J. Okołowicz·M. Płoszajczak·W. Nazarewicz
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Abstract

Beta-delayed proton emission from the neutron halo ground state of $^{11}$Be raised much attention due to the unusually high decay rate. It was argued that this may be due to the existence of a resonance just above the proton decay threshold. In this Letter, we use the lenses of real-energy continuum shell model to describe several observables including the Gamow-Teller rates for the $β^-$-delayed $α$ and proton decays, and argue that, within our model, the large $β^-{\rm p}$ branching ratio cannot be reconciled with other data.

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J. Okołowicz, M. Płoszajczak, W. Nazarewicz. 2022-07-04. $β^-{\rm p}$ and $β^-α$ decay of the $^{11}$Be neutron halo ground state. https://doi.org/10.1088/1361-6471%2Fac8948

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