论文标题
iSospin对称性在镜子对中破裂$^{73} $ sr- $^{73} $ br
Isospin symmetry breaking in the mirror pair $^{73}$Sr-$^{73}$Br
论文作者
论文摘要
在理论上使用大型外壳模型计算对$ t = 3/2 $镜子对$^{73} $ sr- $^{73} $ br的基接地状态中的isospin对称性断裂（ISB）进行了实验观察。用于问题的核部分的大型价空间和成功的PFSDG-U有效相互作用捕获了可能的结构变化，并提供了可靠的基础，以治疗电磁和非电磁起源的ISB效应。计算出的偏移和镜像 - 能量分化与$ i^π$ = 1/2 $^{ - }的反转一致，5/2^{ - } $状态$^{73} $ sr- $ sr- $^{73} $ br，并建议由库伯姆的互动扮演的角色是统一的。核源的isospin破裂贡献估计为$ \ 25 $ kev。
The recent experimental observation of isospin symmetry breaking (ISB) in the ground states of the $T=3/2$ mirror pair $^{73}$Sr - $^{73}$Br is theoretically studied using large-scale shell model calculations. The large valence space and the successful PFSDG-U effective interaction used for the nuclear part of the problem capture possible structural changes and provide a robust basis to treat the ISB effects of both electromagnetic and non-electromagnetic origin. The calculated shifts and mirror-energy-differences are consistent with the inversion of the $I^π$= 1/2$^{-}, 5/2^{-}$ states between $^{73}$Sr - $^{73}$Br, and suggest that the role played by the Coulomb interaction is dominant. An isospin breaking contribution of nuclear origin is estimated to be $\approx 25$ keV.
