论文标题
来自两种中性
Neutrinoless $ββ$-decay nuclear matrix elements from two-neutrino $ββ$-decay data
论文作者
论文摘要
我们研究了核壳模型和质子 - 中子式胶片随机相近似（PNQRPA）框架中的两种中性诺（$2νβ$）和中微子双$ $β$（$0νββ$）衰变。通过壳模型计算从钙到氙的数十个核的衰减半衰期，以及$ββ$发射器的$ββ$发射器，具有pnqrpa中质子中性配对强度的范围，我们观察到良好的良好线性相关性在$2νβ$ - $2νββ$ - $ -DECERRENTION之间的良好线性相关性。然后，我们将相关性与测量的$2νβ$ -DECAY半衰期相结合，以预测$0νβ$ - decay矩阵元素与基于我们系统计算的理论不确定性。我们的结果包括两体电流和短期$0νβ$ -DECAY操作员。
We study two-neutrino ($2νββ$) and neutrinoless double-$β$ ($0νββ$) decays in the nuclear shell model and proton-neutron quasiparticle random-phase approximation (pnQRPA) frameworks. Calculating the decay half-life of several dozens of nuclei ranging from calcium to xenon with the shell model, and of $ββ$ emitters with a wide range of proton-neutron pairing strengths in the pnQRPA, we observe good linear correlations between $2νββ$- and $0νββ$-decay nuclear matrix elements for both methods. We then combine the correlations with measured $2νββ$-decay half-lives to predict $0νββ$-decay matrix elements with theoretical uncertainties based on our systematic calculations. Our results include two-body currents and the short-range $0νββ$-decay operator.
