The first measurement of the muon anomalous magnetic moment from the Fermilab Muon g−2 collaboration

Year: 2022

Type: article

Abstract: This paper will cover the physics and methods behind Fermilab’s Muon g-2 Experiment, along with the long-awaited results from Run-1. The experiment was undertaken to resolve the tension between the Standard Model and the previous measurement taken at Brookhaven National Laboratory. The measured value of the muon magnetic anomaly is aµ(FNAL) = 116592040(54) × 10−11. This result is in good agreement with Brookhaven’s previous measurement. The new world average, aµ(Exp) = 116592061(41) × 10−11, shows a difference from the theoretical value of the Standard Model (SM), aµ(SM) = 116591810(43) × 10−11, of 4.2 standard deviations, strongly hinting at physics beyond the Standard Model. The experiment requires the simultaneous measurement of the muon precession frequency, the magnetic field, and the muons’ distribution in the field. All three of these measurements will be discussed in context, along with the main systematic corrections and uncertainties.

Source: Suplemento de la Revista Mexicana de Física

DOI: 10.31349/suplrevmexfis.3.020717

Author: Booth Tewsley-Booth

Institution: University of Kentucky

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Science Foundation, U.S. Department of Energy, Strong, Royal Society, European Commission, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Ministry of Science, ICT and Future Planning, Istituto Nazionale di Fisica Nucleare, Office of Science, Science and Technology Facilities Council, Fermilab

OpenAlex ID: W4281552575