Jan 23 – 27, 2023
Bormio, Italy
Europe/Berlin timezone

First Result from the Muon g-2 Experiment at Fermilab

Jan 24, 2023, 9:00 AM
Bormio, Italy

Bormio, Italy

Overview Talk Tuesday Morning


Stefano Di Falco (INFN Pisa)


The muon anomalous magnetic moment, 𝑎𝜇=(𝑔−2)/2, provides one of the most precise tests of the Standard Model allowing to discover signs of the presence of new particles and forces in the subatomic quantum fluctuations surrounding the muon.
A previous experiment performed two decades ago at Brookhaven National Laboratory (BNL) has shown an intriguing discrepancy between the theoretical prediction and the experimental value.
The E989 Muon 𝑔−2 Experiment at Fermilab aims to improve by four times the precision of the BNL experiment.
In its recent publication E989 has presented the result of the analysis of the first year of data taking (2018), confirming the discrepancy observed at BNL with a comparable precision.
The talk will describe the E989 experimental technique, with particular attention to the measurement of the muon spin precession frequency and of the magnetic field. The experimental errors will be discussed and the expected improvements, coming from the analysis of the already available new runs, presented.

Topic Particle Physics

Primary author

Stefano Di Falco (INFN Pisa)

Presentation materials