Hadronic corrections to the muon anomalous magnetic moment from lattice QCD

Understand

After a brief self-contained introduction to the muon anomalous magnetic moment, (g-2), we review the status of lattice calculations of the hadronic vacuum polarization contribution and present first results from lattice QCD for the hadronic light-by-light scattering contribution.

• The signal for the latter is consistent with model calculations.
• While encouraging, the statistical error is large and systematic errors are mostly uncontrolled.
• The method is applied first to pure QED as a check.