The precise measurement of the muon anomalous magnetic moment $a_\mu$ provides a sensitive probe of exotic interactions between muons mediated by light beyond the Standard Model (BSM) bosons. Recent advances in both experiment and theory have largely reconciled the long-standing discrepancy in $a_\mu$. Using the latest result, $\Delta a_\mu = a^{ \rm exp}_\mu - a^{ \rm SM}_\mu = (38 \pm 63) \times 10^{ -11}$, we derive updated limits on light BSM boson-mediated exotic muon interactions.
Categories: hep-ph astro-ph.HE