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

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.

Comments: Talk given at Confinement 2003, July 21-24, 2003. 12 pages, including 7 eps figures. To appear in the conference proceedings