Muon magnetism could hint at a breakdown of physics’ standard model

A highly anticipated measurement strengthens the case that muons behave unexpectedly

inside of the g-2 experiment at Fermilab

The Muon g–2 experiment (shown) studies how muons wobble in a giant, doughnut-shaped magnet. The results disagree with the standard model of particle physics, hinting at the possible existence of new particles.

Fermilab

A mysterious magnetic property of subatomic particles called muons hints that new fundamental particles may be lurking undiscovered.