Lattice calculation of the lowest order hadronic contribution to the muon anomalous magnetic moment: an update with Kogut-Susskind fermions

TL;DR

This paper reports a lattice QCD calculation of the hadronic vacuum polarization using improved Kogut-Susskind quarks, providing an updated estimate of the lowest order hadronic contribution to the muon g-2.

Contribution

It introduces a new calculation of the hadronic contribution to muon g-2 using 2+1 flavor improved Kogut-Susskind quarks with recent MILC gauge configurations.

Findings

Preliminary estimate of the hadronic vacuum polarization.

Calculation of the lowest order hadronic contribution to muon g-2.

Utilization of recent gauge configurations for improved accuracy.

Abstract

I present a preliminary calculation of the hadronic vacuum polarization for 2+1 flavors of improved Kogut-Susskind quarks by utilizing a set of gauge configurations recently generated by the MILC collaboration. The polarization function $\Pi(q^2)$ is then used to calculate the lowest order (in $\alpha_{QED}$) hadronic contribution to the muon anomalous magnetic moment.