Towards analytic $(g-2{)}_{\mu }$ at four loops

Abstract

In this contribution we present recent four-loop results for the muon anomalous magnetic moment based on analytic methods. In particular, fermionic corrections involving two or more closed electron loops or at least one tau lepton loop are discussed.

Comments: 5 pages, contribution to the proceedings of the international workshop on e+ e- collisions from Phi to Psi 2013; v2: references added