Fermilab Muon g − 2 experiment: Current status

Nath, A. (2020) Fermilab Muon g − 2 experiment: Current status. Il nuovo cimento C, 43 (2-3). pp. 1-5. ISSN 1826-9885

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Abstract

The Muon g − 2 experiment at Fermilab (E989) is currently measuring the muon magnetic anomaly with a goal precision of 140 part per billion, which will be a fourfold precision improvement over the current best measurement by the previous Muon g − 2 experiment at the Brookhaven Laboratory (BNL). The BNL-measured value of the muon magnetic anomaly and the corresponding Standard Model (SM) best estimate differ by more than three standard deviation which inspired the current measurement as well as a theoretical drive for a significantly more precise calculation of the muon magnetic anomaly to rule out (or establish) statistical fluctuation as the origin of such a huge discrepancy. Stable central values along with 4-fold precision improvements in both theoretical (SM) and experimental fronts, would imply a ∼ 7σ discrepancy and that will be a clear hint of the physics beyond the Standard Model. Such an unprecedented precision demands state-of-the-art technological improvements in all involved components to keep the systematic uncertainty below 70 ppb. This paper reports the current status of the E989 experiment after two years of data acquisition.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica > 530 Fisica
Depositing User:	Marina Spanti
Date Deposited:	10 Feb 2021 16:53
Last Modified:	10 Feb 2021 16:53
URI:	http://eprints.bice.rm.cnr.it/id/eprint/20775

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