Speaker
Description
The anomalous magnetic moment of the muon, $a_\mu$, remains a benchmark precision test of the Standard Model. The long-standing tension between experiment and theory has driven major progress in recent years, culminating in the latest White Paper, which incorporates state-of-the-art lattice QCD determinations of the hadronic vacuum polarization (HVP). These first-principles results, obtained independently by several collaborations, have brought the Standard Model prediction into close agreement with experiment and reshaped the theoretical landscape. Beyond $a_\mu$, the same HVP contributions underpin a broader set of precision quantities—including the $R$-ratio and Euclidean “window” observables—that enable direct, model-independent comparisons between lattice and dispersive approaches. This talk will review the current status of these HVP-related quantities, highlight the collective lattice effort driving these advances, and discuss the emerging picture from cross-method comparisons and their implications for precision tests of the Standard Model.
