Physicists think they've solved the muon mystery

For 20 years, physicists suspected a possible fifth fundamental force in nature after experiments showed the muon's magnetic behavior didn't match theoretical predictions. However, a new study in *Nature* used a lattice-based computer simulation approach — dividing space-time into tiny cells — to calculate the discrepancy down to 11 decimal places, finding no mismatch. The Standard Model of particle physics remains fully intact.