A precise determination of the HVP contribution to the muon anomalous magnetic moment from lattice QCD

TL;DR

This paper reports on a high-precision lattice QCD calculation of the hadronic vacuum polarization contribution to the muon g-2, combining theoretical and experimental data for improved accuracy.

Contribution

It provides the first-principles calculation of various contributions to the HVP and combines lattice and experimental data for a more precise estimate.

Findings

Consistent results between lattice QCD and $e^+ e^-$ data.

Reduced error in the HVP contribution estimate.

Enhanced understanding of muon g-2 discrepancies.

Abstract

In this talk I present the current status of a precise first-principles calculation of the quark connected, quark disconnected, and leading QED and strong isospin-breaking contributions to the leading-order hadronic vacuum polarization by the RBC and UKQCD collaborations. The lattice data is also combined with experimental $e^+ e^-$ scattering data, consistency between the two datasets is checked, and a combined result with smaller error than the lattice data and $e^+ e^-$ scattering data individually is presented.