利用原子和离子阱精确测量β衰变关联参数的进展
Progress towards precision measurements of beta-decay correlation parameters using atom and ion traps
摘要：
原子核β衰变后衰变产物的相关性在提供我们宇宙基本对称性的低能探测方面有着悠久的历史。半个多世纪前，极化60 Co衰变后的电子相关性表明，宇称在弱相互作用中不守恒。今天，同样的基本思想继续被应用于寻找标准模型之外的物理：对相关参数进行精确测量，并寻找与标准模型预测相比的偏差。努力测量这些参数的0.1%的水平，利用原子和离子捕获技术进行说明。
英文摘要：
The correlations of the decay products following the beta decay of nuclei have a long history of providing a low-energy probe of the fundamental symmetries of our universe. Over half a century ago, the correlation of the electrons following the decay of polarized 60Co demonstrated that parity is not conserved in weak interactions. Today, the same basic idea continues to be applied to search for physics beyond the standard model: make precision measurements of correlation parameters and look for deviations compared to their standard model predictions. Efforts to measure these parameters to the 0.1% level utilizing atom and ion trapping techniques are described.
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