Precision Determination of the Muon $g_μ-2$ and $\barα_{\rm Q.E.D.}(M^2_{Z})$

Abstract

We present a summary of the results of two recent precise calculations of the muon anomalous magnetic moment ($g_μ-2$) and the electromagnetic coupling on the $Z$ ($\barα_{\rm Q.E.D.}(M^2_{Z})$). The main sources of uncertainty are underlined.