论文标题
$2νββ$ -DECAY到第一个$ 2^+$状态，并从球形QRPA计算中进行部分isospin对称性恢复
$2νββ$-decay to first $2^+$ state with partial isospin symmetry restoration from spherical QRPA calculations
论文作者
论文摘要
通过部分恢复的同素对称性，我们计算了$2νβ$（两个中微子双β衰减）的特殊衰减模式的核基质元素 - 衰减到第一个$ 2^+$兴奋的状态。使用逼真的CD-BONN核力量，我们分析了核基质元件对质子 - 独立粒子粒子相互作用的ISO-vector和Iso-Scalar部分的依赖性。观察到对不同核基质元件的依赖性，并解释了结果。我们还通过数值电子波函数和正确选择的激发能提供相空间因子。最后，我们为不同核的这种衰减模式的半衰期提供了结果。
With partially restored isospin symmetry, we calculate the nuclear matrix element for a special decay mode of $2νββ$ (two neutrino double beta decay) -- the decay to the first $2^+$ excited states. With the realistic CD-Bonn nuclear force, we analyze the dependence of the nuclear matrix elements on the iso-vector and iso-scalar parts of proton-neutron particle-particle interaction. The dependence on the different nuclear matrix element is observed and the results are explained. We also give the phase space factors with numerical electron wave functions and properly chosen excitation energies. Finally we give our results for the half-lives of this decay mode for different nuclei.
