The first results from the Muon g-2 experiment at Fermilab were unveiled on April 7, 2021. The announcement colloquium can be found on the Fermilab YouTube channel. A remarkable video explains how the Muon g-2 experiment works. Jorge Cham illustrates the muon anomaly results in an easy to follow set of cartoons.

Muon g-2 will better understand the properties of the muon and use them to probe the Standard Model of particle physics

Click the image above to take a virtual tour of the experiment!

Muon g-2 (pronounced gee minus two) uses Fermilab's powerful accelerators to explore the interactions of short-lived particles known as muons with a strong magnetic field in "empty" space. Scientists know that even in a vacuum, space is never empty. Instead, it is filled with an invisible sea of virtual particles that in accordance with the laws of quantum physics pop in and out of existence for incredibly short moments of time. Scientists can test the presence and nature of these virtual particles with particle beams traveling in a magnetic field.

The Muon g-2 experimenters examine the precession of muons that are subjected to a magnetic field. The main goal is to test the Standard Model's predictions of this value by measuring the precession rate experimentally to a precision of 0.14 parts per million. If there is an inconsistency, it could indicate the Standard Model is incomplete and in need of revision.