Center for Experimental Nuclear Physics and Astrophysics

A brand new astronomical observatory has discovered over 11,000 previously-unknown asteroids. Mario Juri, professor of astronomy at the UW, is quoted.

From CERN in the ‘60s, to Brookhaven National Laboratory in the ‘90s, and now at the Fermi National Accelerator Laboratory (Fermilab) in Illinois, it took a village to find the Muon g-2. The complex, experimental measurement of this subatomic particle’s magnetism has the potential to completely reshape our understanding of the universe. 

Last month, the physics community’s quest for absurd precision received recognition. The Muon g-2 experiment won the 2026 Breakthrough Prize in Fundamental Physics, dubbed the “Oscars of Science.” The $3 million prize is split among 384 researchers across generations. Alongside a global legion of researchers, UW physics professor and CENPA Director David Hertzog and professor emeritus Peter Kammel played leading roles on the Muon g-2 team. 

David Hertzog, a University of Washington professor of physics, is a recipient of the 2026 Breakthrough Prize for Fundamental Physics. The award is shared among roughly 400 scientists and celebrates decades of work to better understand the muon a subatomic particle with anomalous properties.

On June 3, scientists working on the Muon g-2 experiment (pronounced "mew-on gee-minus-two") released the third and final measurement of the muon magnetic anomaly. This result agrees with the published results from 2021 and 2023 but with a much better precision of 127 parts per billion, surpassing the original experimental design goal of 140 parts per billion.

A particle physics experiment decades in the making — the Muon g-2 experiment — looks increasingly like it might set up a showdown over whether there are fundamental particles or forces in the universe that are unaccounted for in the current Standard Model. On Aug. 10, the international team of scientists behind Muon g-2 — pronounced “g minus 2” — released the world’s most precise measurement yet of the anomalous magnetic moment of the muon. Calculating the muon’s magnetic moment at a high precision will indicate whether it is interacting solely with the particles and forces known today, or if unknown particles or forces are out there.

David Hertzog, professor of physics, explains the results of new research on muons, a type of particle.

When considering what makes up the universe, it’s surprising that scientists could focus on just one yes/no question. But that’s exactly what a group of researchers supported by the Heising-Simons Foundation is doing.