论文标题
镜核电荷半径差异的信息含量
Information content of the differences in the charge radii of mirror nuclei
论文作者
论文摘要
最近已经提出，镜核电荷半径的差异包含有关对称能量L的斜率的信息。为了检验该假设，我们使用量化的能量密度函数进行统计相关分析，这些函数与我们先前对全球核观测值的知识（如结合能量和电荷radii）一致。我们得出的结论是，与其他可观察到的可观察到的相比，镜子对R_MIR之间的电荷半径差是下等级指标。特别是，该数量与中子皮肤和L的相关性很差。考虑到R_MIR上的大理论不确定性，我们得出结论，镜像RADII上的精确数据不能对L提供严格的约束。
Differences in the charge radii of mirror nuclei have been recently suggested to contain information on the slope of the symmetry energy L. To test this hypothesis, we perform statistical correlation analysis using quantified energy density functionals that are consistent with our previous knowledge on global nuclear observables such as binding energies and charge radii. We conclude that the difference in charge radii between a mirror pair, R_mir, is an inferior isovector indicator compared to other observables, such at the neutron skin or electric dipole polarizability. In particular, this quantity correlates poorly with both the neutron skin and L. We demonstrate that R_mir is influenced by pairing correlations in the presence of low-lying proton continuum in the proton-rich mirror-partner nucleus. Considering the large theoretical uncertainties on R_mir, we conclude that the precise data on mirror charge radii cannot provide a stringent constraint on L.
