I summarize our self-contained determinations of the lowest order hadronic contributions to the anomalous magnetic moments a_{ \mu,\tau} of the muon and tau leptons, the running QED coupling \alpha(M_Z) and the muonium hyperfine splitting \nu. Using as a revised estimate of the light-by light scattering: a_\mu(LL)=85(18) 10^{ -11}, we deduce: a_\mu^{ SM} = 116 591 861(78) 10^{ -11}, a_\tau^{ SM} = 117 759(7) 10^{ -8}, giving: a_\mu^{ SM}-a_\mu^{ exp}=162(170) 10^{ -11}. We also obtain: \alpha^{ -1}(M_Z)=128.926(25) and the Fermi energy splitting: \nu_F^{ SM}=4 459 031 783(229) { Hz}. Lower bounds on some eventual new physics are given, while \nu_F^{ SM} leads e.g. to m_\mu/m_e=206.768 276(11) in remarkable agreement with the data.
Categories: hep-ph astro-ph hep-ex hep-th