From University of Chicago News, June 18, 2021: Fermilab’s muon g-2 result announced in April has theorists scratching their heads about muons behaving slightly differently than predicted in their giant accelerator.
Muon Ring
From The New York Times, April 7, 2021: A collaboration of scientists led by Fermilab announced mounting evidence that a tiny subatomic particle seems to be disobeying the known laws of physics.