https://doi.org/10.1051/epjconf/202531910002
Latest results of the Muon g-2 experiment at Fermilab
1 Università degli Studi di Roma “Tor Vergata”, Via della Ricerca Scientifica 1, 00133, Rome ( Italy )
2 Istituto Nazionale di Fisica Nucleare Sezione di “Tor Vergata”, Via della Ricerca Scientifica 1, 00133, Rome ( Italy )
* e-mail: matteo.sorbara@roma2.infn.it
Published online: 6 March 2025
The muon magnetic anomaly, aμ = g - 2/ 2, is a low-energy observable which can be both measured and computed to high precision, making it a sensitive test of the Standard Model and a probe for new physics. The Muon g − 2 experiment at Fermilab aims to measure aμ with a final accuracy of 140 parts per billion (ppb). The experiment is based on the measurement of the muon spin anomalous precession frequency, ωa, in a magnetic field. The first result of the experiment, based on the 2018 data-taking campaign, was published in 2021 and it confirmed the previous result obtained at Brookhaven National Laboratory with a similar sensitivity of 460 ppb. In this proceeding, the result based on the 2019 and 2020 datasets is presented and the improvement in the accuracy with respect to the 2018 dataset are discussed.
© The Authors, published by EDP Sciences, 2025
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