The muon mystery deepens

In 2021 the Muon g-2 Experiment at Fermilab found a significant discrepancy between the theoretical prediction and the experimental measurement of the anomalous magnetic moment of the muon, indicating the existence of new physics. More recently, however, an alternative prediction has found the Fermilab result to be consistent with the Standard Model. Alex Keshavarzi investigates which side will come out on top.