期刊
EPL
卷 130, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/130/12001
关键词
21; 10; Tg; 23; 50; +z; 21; 60; Cs
资金
- US Department of Energy Office of Science, Office of Nuclear Physics [DE-SC0009883]
- Cyclotron Institute at Texas AM University
The Be-11 neutron halo nucleus appears to decay into Be-10 with a rate that exceeds expectations. Neutron disappearance into dark matter, beta decay of a halo neutron, or beta-delayed proton decay have been offered as explanations. In this work we study the latter option; we carry out shell model calculations and sequential decay analysis examining the beta-delayed proton decay going through a resonance in B-11. The narrow energy window, lack of states with sufficient spectroscopic strength, overwhelming alpha decay branch, all make reconciling the observed rate with beta-delayed proton decay difficult.
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