$(g-2)_{\mu,e}$ and the ANITA anomalous events in a three-loop neutrino mass model

Understand

The most recent measurement of the fine structure constant leads to a 2.4 $\sigma$ deviation in the electron anomalous magnetic moment $g_{e}$-2, while the muon anomalous magnetic moment $g_\mu$-2 has a long standing 3.7 $\sigma$ deviation in the opposite direction.

• We show that these deviations can be explained in a three-loop neutrino mass model based on an $E_6$ Grand Unified Theory.
• We also study the impact such a model can have on the anomalous events observed by the ANITA experiment and find an insufficient enhancement of the event rate.