Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
B. Abi, T. Albahri, S. Al-Kilani · Muon g-2 Collaboration (Fermilab); several hundred authors, B. Abi listed first.
Summary
The Fermilab Muon g-2 Collaboration reported its first measurement of the positive muon's anomalous magnetic moment with 0.46 ppm precision. The result was consistent with the earlier Brookhaven measurement, and the combined experimental value showed a tension of about 4.2 sigma with the Standard Model theoretical prediction. This hinted at possible physics beyond the Standard Model.
Key findings
- Measured a_mu of the positive muon to 0.46 ppm, confirming the prior Brookhaven E821 result
- Combined experimental average deviates from the Standard Model prediction at ~4.2 sigma
- First physics result from the Fermilab Muon g-2 experiment (Run 1)
Subjects & keywords
Cite this paper
B. Abi, T. Albahri, & S. Al-Kilani [Muon g-2 Collaboration (Fermilab); several hundred authors, B. Abi listed first.] (2021). Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm. Physical Review Letters. https://doi.org/10.1103/PhysRevLett.126.141801
@article{abi2021measurement,
author = {B. Abi and T. Albahri and S. Al-Kilani and {Muon g-2 Collaboration (Fermilab); several hundred authors, B. Abi listed first.}},
title = {Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm},
journal = {Physical Review Letters},
year = {2021},
doi = {10.1103/PhysRevLett.126.141801},
url = {https://doi.org/10.1103/PhysRevLett.126.141801}
}