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The Muon g-2 experiment at Fermilab aims to measure the muon magnetic moment anomaly, aμ = (g − 2)/2, with a final accuracy of 140 parts per billion. The experiment’s first result from the 2018 dataset, Run 1, was published in 2021 and confirmed the previous result obtained at Brookhaven National Laboratory with a similar sensitivity. I will present the result based on the 2019 and 2020 datasets, Runs 2 and 3, which contain a factor of four more data than in Run 1, thus entering a new sensitivity regime to g-2. I will discuss the improvement in the accuracy of aμ and the future prospects for the experiment. I will then discuss the implications of the comparison of the new measurement with the last Standard Model predictions for muon g-2.
Refreshments will be served at 10:30.
Jan Fiete Grosse-Oetringhaus and Pedro Silva