Muon g-2: A Lattice Perspective

With the publication of the new measurement of the anomalous
 magnetic moment of the muon at Fermilab, the discrepancy between experiment
 and the data-driven theory prediction has increased to 4.2sigma. After QED,
 Hadronic Vacuum Polarization has the most significant contributions to the
 anomalous magnetic moment of the muon. Recent lattice QCD calculations
 predict values for the hadronic vacuum polarization contribution that are
 larger than the data-driven estimates, bringing the Standard Model prediction
 closer to the experimental measurement. Euclidean time windows in the
 time-momentum representation of the hadronic vacuum polarization contribution
 to the muon g−2 can help clarify the discrepancy between the phenomenological
 and lattice predictions.

 In this talk, we briefly introduce the relevant lattice methodology for
 hadronic vacuum polarization contribution to the muon g-2. We present our
 calculation of the hadronic vacuum polarization contribution to the muon g−2
 on a 6.2 fm box with 2 light and 1 strange O(a) improved Wilson quarks, and
 physical pions. In addition, we discuss state-of-the-art noise reduction
 techniques to reduce the uncertainty on our final estimate.