Scientists were wrong about this “rule-breaking” particle

For over 60 years, physicists believed a tiny particle called the muon was behaving in ways that couldn't be explained by existing physics, hinting at a mysterious fifth force of nature. A Penn State-led research team used supercomputers to recalculate the muon's magnetic behavior with extreme precision and found the discrepancy was caused by flawed earlier calculations, not unknown physics — confirming the Standard Model holds true.