Speaker
Description
The Muon $g-2$ experiment at Fermilab aims to measure the muon magnetic moment anomaly, $a_{\mu} = (g-2)/2$, with a final accuracy of 0.14 parts per million. The experiment’s first result published in 2021, based on Run-1 data collected in 2018, confirmed the previous result obtained at Brookhaven National Laboratory with a similar sensitivity. In 2023, the experiment published new results based on the 2019 and 2020 datasets, Run-2 and Run-3, which contain a factor of four more data than in Run-1, thus entering a new sensitivity regime to $g-2$. In this talk, I will discuss the improvements in the accuracy of $a_{\mu}$ with respect to the Run-1 result, which allowed for a factor 2 improvement on both the statistical and systematic uncertainties, and the future prospects for the experiment. and for the Standard Model prediction for muon $g-2$. I will then discuss the implications of the comparison of the new measurement with the last Standard Model predictions for muon $g-2$.
Name of collaboration or list of co-authors
E989 (Muon g-2) collaboration at Fermilab
