Speaker
Description
The Fermilab Lattice, HPQCD, and MILC collaborations are engaged in multi-year projects to compute the hadronic vacuum polarization (HVP) contribution to the anomalous magnetic moment of the muon with high precision. In this talk, we present the status of our calculation of the light-quark connected contributions to HVP. The calculation relies on four ensembles of gauge configurations generated by the MILC collaboration. These ensembles have 2+1+1 flavors of dynamical highly-improved staggered quarks (HISQ) with the common up and down quark masses tuned to give a pion mass very close to its physical value. Lattice spacings range from approximately 0.15 fm to 0.06 fm. For most ensembles, the statistics have been increased from our last publication. We have results for various window regions that restrict the contribution to time ranges for which the vector-current correlation is precisely determined.
