Implications of W-Boson Mass Anomaly for Atomic Parity Violation

Implications of W-Boson Mass Anomaly for Atomic Parity Violation
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DOI:
10.3390/atoms10040149
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发表时间:
2022-04
期刊:
影响因子:
1.8
通讯作者:
H. Tran Tan;A. Derevianko
H. Tran Tan;A. Derevianko
中科院分区:
--
文献类型:
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作者:
H. Tran Tan;A. Derevianko

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我们考虑最近测量的 W 玻色子质量 MW=80,433.5±9.4MeV/c2 对于原子宇称违反实验的影响。我们发现,MW 的变化使 133Cs 核弱电荷的标准模型预测变为 QW(133Cs)=−73.11(1),即从当前值偏移 8.5σ,质子弱电荷偏移 2.7%。 QW(133Cs) 的转变缓解了现有其值测定之间的紧张关系,并激发了更精确的原子理论计算,而 QW(p) 的转变则激发了下一代氢原子宇称不守恒实验。使用我们修改后的 QW(133Cs) 值,我们还重新调整了标准模型之外的物理参数的约束。最后,我们重新检查新的 W 玻色子质量的电弱耦合的运行。
We consider the implications of the recent measurement of the W-boson mass MW=80,433.5±9.4MeV/c2 for atomic parity violation experiments. We show that the change in MW shifts the Standard Model prediction for the 133Cs nuclear weak charge to QW(133Cs)=−73.11(1), i.e., by 8.5σ from its current value, and the proton weak charge by 2.7%. The shift in QW(133Cs) ameliorates the tension between existing determinations of its value and motivates more accurate atomic theory calculations, while the shift in QW(p) inspires next-generation atomic parity violation experiments with hydrogen. Using our revised value for QW(133Cs), we also readjust constraints on parameters of physics beyond the Standard Model. Finally, we reexamine the running of the electroweak coupling for the new W boson mass.