One Particle Is Wobbling Wrong and Nobody Knows Why

One Particle Is Wobbling Wrong and Nobody Knows Why. Something is out there we have not found.

Narrated by Matilda — building a channel? Filter the shop by voice so every video you buy sounds like the same presenter. Or drop the narration entirely: each bundle ships a voice-free master plus the caption timings, so you can record your own in any language.

A muon is a heavy electron that lives two millionths of a second. Spin one in a magnetic field and it wobbles at a rate the Standard Model predicts exactly. So they built a fifteen metre ring, fired muons around it at nearly the speed of light, and measured that wobble to eleven decimal places. It does not match the prediction. The gap is minuscule, but it is larger than the uncertainty, and twenty years of rechecking has not made it go away. Something is out there we have not found.