Status of Theory Calculations of the Muon Anomalous Magnetic Moment

by Giuseppe Gagliardi (U. Roma Tre)

Wednesday 29 Jan 2025, 14:30 → 16:30 Europe/Rome

Aula Salvini (Laboratori Nazionali di Frascati)

The FNAL collaboration has measured the value of the muon anomalous magnetic moment, $a_{\mu} = g_{\mu} - 2$, achieving an unprecedented precision of  0.2 ppm. From the theoretical perspective, it is crucial to match this experimenta precision. The most challenging part of the theoretical calculation comes from the leading hadronic vacuum polarization (HVP) contribution $a_{\mu}^{\mathrm{HVP-LO}}$, which must be determined with subpercent precision. In this seminar, I will review the latest lattice QCD results for $a_{\mu}^{\mathrm{HVP-LO}}$, as well as for the subleading hadronic light-by-light contribution, and discuss the phenomenological impact of these results.

Locandina_Gagliardi.docx