论文标题
核基质元素景观中的主要中微子质量约束
Majorana neutrino mass constraints in the landscape of nuclear matrix elements
论文作者
论文摘要
我们讨论对使用不同同位素的实验中的中微子双β衰减（$0νββ$）搜索中微子中微子质量$ m_ {ββ} $的最新约束： （$^{130} $ TE）。 $ M_ {ββ} $上的最佳拟合和上限在核基质元素（NME）的一般景观中以及在代表性核模型中获得的特定NME值探索。通过通过二次形式近似$0νβ$信号的可能性，对单独和组合的同位素数据的分析变得非常简单，并允许阐明多相位数据组合的各个方面。特别是，我们分析了不同数据对$ M_ {ββ} $设置上限的相对影响，以及最佳拟合的条件，导致非零$ m_ {ββ} $的变量值。从图形和数值形式报告了来自各种数据组合的$ M_ {ββ} $的详细结果。简要讨论了对未来$0νβ$数据分析和NME计算的影响。
We discuss up-to-date constraints on the Majorana neutrino mass $m_{ββ}$ from neutrinoless double beta decay ($0νββ$) searches in experiments using different isotopes: KamLAND-Zen and EXO ($^{136}$Xe), GERDA and MAJORANA ($^{76}$Ge) and CUORE ($^{130}$Te). Best fits and upper bounds on $m_{ββ}$ are explored in the general landscape of nuclear matrix elements (NME), as well as for specific NME values obtained in representative nuclear models. By approximating the likelihood of $0νββ$ signals through quadratic forms, the analysis of separate and combined isotope data becomes exceedingly simple, and allows to clarify various aspects of multi-isotope data combinations. In particular, we analyze the relative impact of different data in setting upper bounds on $m_{ββ}$, as well as the conditions leading to nonzero $m_{ββ}$ at best fit, for variable values of the NMEs. Detailed results on $m_{ββ}$ from various combinations of data are reported in graphical and numerical form. Implications for future $0νββ$ data analyses and NME calculations are briefly discussed.
