New results from the Fermilab Muon g-2 experiment

Precision measurements of the static properties of leptons and baryons are increasingly important in an era where signatures of Beyond the Standard Model physics remain conspicuously absent from experiments operating at the energy frontier. The anomalous magnetic moment of the muon a_μ = (g-2)/2 can be theoretically calculated and measured to extraordinary precision, permitting a unique sensitivity to contributions from new particles and forces. In 2021 the muon g-2 experiment at Fermilab published a new measurement of a_μ, confirming with similar precision (0.46 ppm), the previous measurement made two decades earlier at Brookhaven National Lab. This talk will present an updated value of a_μ, with a factor of 2 increase in precision, based on data taken at Fermilab in 2019 and 2020. Leading systematic effects and comparisons to the Run 1 result will be discussed.