Measurement of the muon magnetic anomaly to 0.20 ppm by the Muon g-2 experiment at Fermilab

Cotrozzi, Lorenzo ORCID: 0000-0002-0375-0611 (2025) Measurement of the muon magnetic anomaly to 0.20 ppm by the Muon g-2 experiment at Fermilab SciPost Physics Proceedings (17). 022-. ISSN 2666-4003, 2666-4003

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Abstract

The Muon g-2 $g-2$ experiment at Fermilab aims to measure the muon magnetic moment anomaly, a_{\mu}=(g-2)/2 $a_{\mu }=(g-2)/2$ , with a final accuracy of 0.14 parts per million (ppm). The experiment’s first result was published in 2021, based on data collected in 2018, and in 2023 a new result was published based on two more years of data taking, 2019 and 2020. The combination of the two results from Fermilab and the previous one from Brookhaven National Laboratory brought the uncertainty on the experimental measurement of a_{\mu} $a_{\mu }$ to the unprecedented value of 0.19 ppm. This paper will present details about the improvements of statistical and systematic uncertainties on a_{\mu} $a_{\mu }$ since the 2021 result.

Item Type:	Article
Uncontrolled Keywords:	5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions:	Faculty of Science & Engineering Faculty of Science & Engineering > School of Physical Sciences Faculty of Science & Engineering > School of Physical Sciences > Physics
Depositing User:	Symplectic Admin
Date Deposited:	14 Jan 2026 09:59
Last Modified:	23 May 2026 10:28
DOI:	10.21468/scipostphysproc.17.022
Open Access URL:	https://scipost.org/SciPostPhysProc.17.022/pdf
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3196597
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