β − p and β − α decay of the 11 Be neutron halo ground state

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 con...

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Published inJournal of physics. G, Nuclear and particle physics Vol. 49; no. 10; p. 10
Main Authors Okołowicz, J, Płoszajczak, M, Nazarewicz, W
Format Journal Article
LanguageEnglish
Published 01.10.2022
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Summary: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 − p branching ratio cannot be reconciled with other data.
ISSN:0954-3899
1361-6471
DOI:10.1088/1361-6471/ac8948