论文标题
核物理中强大的CP违反
Strong CP violation in nuclear physics
论文作者
论文摘要
核，磁磁原子和某些分子的电偶极力矩是由CP侵略性核力量诱导的。幼稚的维度分析预测，这些力将由远距离的一杆交换过程主导，而短距离力仅在手性膨胀中仅在近代到领先的顺序中进入。基于重新归一化的论点，我们认为，CP侵入核力量的一致图片需要一个前阶短距离运算符，因为$ {}^1S_0 $ - $ - $ - $ {}^3p_0 $过渡，这是由于$ {}}^3p_0 $ cannels in $ {}^3p_0 $ cannels in $ {}^3p_0 $ ntressor的诱人性和奇异性。短距离操作员导致$ \ Mathcal O（1）$校正静态和振荡，与轴支搜索，电动偶极矩相关。我们讨论策略如何通过与核系统中违反电荷对称对称性的违反QCD Theta术语违反CP违反CP违反的有限部分。
Electric dipole moments of nuclei, diamagnetic atoms, and certain molecules are induced by CP-violating nuclear forces. Naive dimensional analysis predicts these forces to be dominated by long-range one-pion-exchange processes, with short-range forces entering only at next-to-next-to-leading order in the chiral expansion. Based on renormalization arguments we argue that a consistent picture of CP-violating nuclear forces requires a leading-order short-distance operator contributing to ${}^1S_0$-${}^3P_0$ transitions, due to the attractive and singular nature of the strong tensor force in the ${}^3P_0$ channel. The short-distance operator leads to $\mathcal O(1)$ corrections to static and oscillating, relevant for axion searches, electric dipole moments. We discuss strategies how the finite part of the associated low-energy constant can be determined in the case of CP violation from the QCD theta term by the connection to charge-symmetry violation in nuclear systems.
