Speaker
Description
The muon’s anomalous magnetic moment is now known experimentally to a precision of 0.19 ppm from the most recent results of the Fermilab g-2 experiment. Further improvement is expected this year, as the analysis of the final 4th, 5th and 6th runs are nearing completion. On the theoretical side, the largest source of uncertainty in the 0.37 ppm determination from the muon g-2 theory initiative white-paper is the hadronic vacuum polarization (HVP) contribution, followed by the sub-leading hadronic light-by-light (HLbL) contribution. There are two approaches for computing these hadronic contributions. The first, which was used in the first white-paper result is from a data-driven dispersive approach. The second, relying on minimal experimental inputs, is from Lattice QCD. In this talk I will discuss the current landscape of both approaches for computing the HVP and HLbL contributions in the context of the upcoming release of the second edition of the g-2 theory initiative white-paper.
