论文标题
$^{11} $ be的Beta删除质子衰减率的评估
Assessment of the beta-delayed proton decay rate of $^{11}$Be
论文作者
论文摘要
$^{11} $是中子晕核似乎会衰减到$^{10} $中，其速率超出了期望。中子消失在暗物质中，将光晕中子的β衰变或β含β的质子衰减作为解释。在这项工作中，我们研究了后一种选择；我们执行Shell模型计算和顺序衰减分析，以检查β延迟的质子衰减，以$^{11} $ B中的共振。狭窄的能量窗口缺乏具有足够光谱强度的状态，压倒性的α衰变分支，所有状态都使观察到的速率与β含有β的质子衰减的速率变得难以调和。
The $^{11}$Be neutron halo nucleus appears to decay into $^{10}$Be 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 $^{11}$B. 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.
