标题： 费米实验室缪子 g-2 实验对缪子反常磁矩的第二/三次测量 显示英文标题

标题： Run 2/3 measurement of the muon anomalous magnetic moment by the Muon g-2 experiment at Fermilab

摘要： 缪子g-2实验在费米实验室旨在测量缪子磁矩异常，$a_\mu =(g-2)/2$，最终目标精度为0.14百万分率（ppm）。 该实验的初步结果于2021年发表，使用的是2018年的运行1数据，证实了布鲁克海文国家实验室之前的测量结果，具有 comparable 的灵敏度0.46 ppm。 2023年，基于2019和2020年收集的运行2和运行3数据的新结果被发布。 这些数据集包含四倍于运行1的数据，显著提高了灵敏度，并实现了前所未有的不确定性0.20 ppm。 这一进展使统计和系统不确定性的两倍改进。 在这里，我们将讨论缪子$g-2$测量，相对于运行1结果的精度提高，并展望未来将纳入2021至2023年数据集的测量。 此外，我们将探讨将新测量结果与最新的标准模型对缪子g-2预测进行比较的意义。 显示英文摘要

摘要： The Muon g-2 experiment at Fermilab seeks to measure the muon magnetic moment anomaly, $a_\mu =(g-2)/2$, with a final target precision of 0.14 parts-per-million (ppm). The experiment's initial result, published in 2021 using Run 1 data from 2018, confirmed the previous measurement at Brookhaven National Laboratory with a comparable sensitivity of 0.46 ppm. In 2023, a new result based on Run 2 and Run 3 data, collected in 2019 and 2020, was released. These datasets contain four times the data from Run 1, significantly enhancing sensitivity and achieving an unprecedented uncertainty of 0.20 ppm. This advancement resulted in a two-fold improvement in both statistical and systematic uncertainties. Here, we will discuss the muon $g-2$ measurement, the increased precision relative to the Run 1 result, and provide an outlook on future measurements which will incorporate datasets from 2021 to 2023. Additionally, we will explore the implications of comparing the new measurements with the latest Standard Model predictions for muon g-2.