论文标题
从$^{133} $ cs中改进的均等违规计算对新物理学的限制
Constraints on new physics from an improved calculation of parity violation in $^{133}$Cs
论文作者
论文摘要
我们报告了我们计算核自旋的平价违反电偶极转换振幅（$ e1_ {pv} $）的结果，价格为$ 6S〜 ^2s_ {1/2} - 7S〜 ^2s_ ^2s_ {1/2} $ in $ ^{133} $ cs in 0.3 variont的结果。耦合群集理论。在目前的工作中，我们将低洼和高覆态态在同一基础上提到上述振幅的贡献，从而克服了以前高精度相对论耦合群集计算的局限性。我们获得了上述过渡的矢量极化性（$β$）的准确值，并通过将$ e1_ {pv} $计算的结果与$ im（e1_ {pv}/β）$的最新测量结果结合起来，我们提取核弱电荷（$ q_w $）;并在标准模型（SM）中分析其与价值的偏差，以限制SM之外的新物理学的某些方案。
We report the result of our calculation of the nuclear spin-independent parity violating electric dipole transition amplitude ($E1_{PV}$) for the $6s ~ ^2S_{1/2} - 7s ~ ^2S_{1/2}$ transition in $^{133}$Cs to an accuracy of 0.3\% using a variant of the perturbed relativistic coupled-cluster theory. In the present work, we treat the contributions of both the low-lying and high-lying excited states to the above mentioned amplitude on the same footing, thereby overcoming the limitations of previous high accuracy relativistic coupled cluster calculations. We obtain an accurate value for the vector polarizability ($β$) for the above transition and by combining it with the results from our present calculation of $E1_{PV}$ and the latest measurement of $Im(E1_{PV}/β)$, we extract the nuclear weak charge ($Q_W$); and analyze its deviation from its value in the Standard Model (SM) in order to constrain certain scenarios of new physics beyond the SM.
