论文标题
基准测试$^{136} $ XE NEDINOLESS $ββ$ decay矩阵元素用$^{138} {\ rm ba}(p,p,t)$反应
Benchmarking $^{136}$Xe Neutrinoless $ββ$ Decay Matrix Element Calculations with the $^{138}{\rm Ba}(p,t)$ Reaction
论文作者
论文摘要
我们使用高分辨率的磁光谱仪研究了通过$^{138} {\ rm ba}(p,t)$反应生产的$^{136} $ ba中的中子对$ 0^+$状态。结合最新的壳模型计算,这些数据基准部分是$^{136} $ XE中准ledbleta Beta($0νββ$)衰减的核矩阵元件(NME)的主要gamow-Teller组件。我们首次通过使用可观察的实验性观察途径对$0νβ$衰减NME的一部分进行评估,并提供了一种新的方法途径,以更准确地计算$0νβ$衰减矩阵元素。
We used a high-resolution magnetic spectrograph to study neutron pair-correlated $0^+$ states in $^{136}$Ba, produced via the $^{138}{\rm Ba}(p,t)$ reaction. In conjunction with state-of-the-art shell model calculations, these data benchmark part of the dominant Gamow-Teller component of the nuclear matrix element (NME) for $^{136}$Xe neutrinoless double beta ($0νββ$) decay. We demonstrate for the first time an evaluation of part of a $0νββ$ decay NME by use of an experimental observable, presenting a new avenue of approach for more accurate calculations of $0νββ$ decay matrix elements.