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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >A precise measurement of the muon magnetic anomaly
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A precise measurement of the muon magnetic anomaly

机译：μ磁子磁异常的精确测量

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At the Brookhaven National Laboratory (BNL) a precision experiment of the muon magnetic anomaly a(mu) in a magnetic storage ring is on its way. Measurements carried out on positive muons in 1999 have resulted in a(mu+) = 11,659,202(14)(6) x 10(-10) (1.3 ppm). A difference between this value and the theoretical value at the time of publication has lead to a careful reevaluation of all contributions. At present there are several independent theoretical values which are based on standard theory. They agree with each other and are within one to two standard deviations of the above value. The goal of the experiment is a precision of 0.35 ppm. About eight times more data are being analyzed and additional data taking is foreseen. Eventual agreement with experiment would allow to put stringent limits on parameters in theoretical approaches beyond the standard model. Disagreement could indicate new physics. [References: 42]
机译：在布鲁克海文国家实验室（BNL），正在对磁存储环中的μ子磁异常a（mu）进行精确实验。 1999年对正子进行了测量，得出a（mu +）= 11,659,202（14）（6）x 10（-10）（1.3 ppm）。该值与发布时的理论值之间的差异导致对所有贡献进行仔细的重新评估。目前，有几种基于标准理论的独立理论值。它们彼此一致，并且在上述值的一到两个标准偏差之内。实验的目标是0.35 ppm的精度。大约要分析八倍的数据，并且预计还会有其他数据。最终与实验达成协议将允许对超出标准模型的理论方法中的参数设置严格的限制。分歧可能表明新的物理学。 [参考：42]

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