论文标题
Fermilab Muon $ G-2 $实验的状态
Status of the Fermilab Muon $g-2$ Experiment
论文作者
论文摘要
MUON异常磁矩，$A_μ=（G-2）/2 $，是一种低能观察的，可以以很高的精度进行测量和计算，从而使其对标准模型（SM）和对新物理的敏感探针进行了极好的测试。最近的努力提高了理论预测和实验测量的精度。从理论方面来说，Muon $ G-2 $理论倡议是一支由130多种物理学家组成的国际团队，于2020年达成了对SM预测的共识，以$A_μ$。 On the experimental side, the E989 Muon $g-2$ Collaboration at Fermilab (FNAL) published in April 2021 a new measurement of $a_μ$ from the Run-1 dataset (2018) with 0.46 ppm precision, corroborating the previous Brookhaven National Laboratory (BNL) measurement and increasing the discrepancy with the SM value to 4.2 standard deviations.在本文中，我将讨论实验设置，并报告实验的当前状态。
The muon anomalous magnetic moment, $a_μ= (g-2)/2$, is a low-energy observable which can be both measured and computed with very high precision, making it an excellent test of the Standard Model (SM) and a sensitive probe of new physics. Recent efforts improved the precision of both the theoretical prediction and the experimental measurement. On the theory side, the Muon $g-2$ Theory Initiative, an international team of more than 130 physicists, reached in 2020 a consensus on the SM prediction for $a_μ$. On the experimental side, the E989 Muon $g-2$ Collaboration at Fermilab (FNAL) published in April 2021 a new measurement of $a_μ$ from the Run-1 dataset (2018) with 0.46 ppm precision, corroborating the previous Brookhaven National Laboratory (BNL) measurement and increasing the discrepancy with the SM value to 4.2 standard deviations. In this paper, I will discuss the experimental setup and report on the current status of the experiment.
