Jun 26 – 27, 2023
America/Chicago timezone

The Muon g-2 Experiment in 10 minutes

Jun 27, 2023, 1:30 PM
One West (Fermilab)

One West



Paolo Girotti (INFN Pisa)


The Muon $g-2$ Experiment at Fermilab is a very high-precision experiment that aims to measure the muon magnetic anomaly with the unprecedented precision of 140 parts per billion. The muon anomaly, which is the relative deviation of the muon g-factor from 2, encodes all the possible virtual interactions between the muon and a magnetic field. In April 2021, the collaboration published the first measurement relative to the first year of data taking with a precision of 460 ppb. The result confirmed the previous experiment at BNL and increased the tension with the Standard Model prediction to 4.2 $\sigma$. This exciting discrepancy could be a hint of new physics and/or indirect detection of unknown particles. However, improved theoretical calculations involving Lattice QCD techniques are bringing new tensions within the theory side of the muon anomaly. A new measurement with twice the precision will be published later this summer. This talk will try to convey the importance of the g-2 experiment and the fascinating complexities involved when performing a sub-ppm measurement.

Primary author

Paolo Girotti (INFN Pisa)

Presentation materials