Hadronic Vacuum Polarization Contribution to g-2 from the Lattice

TL;DR

This paper reviews lattice QCD methods for calculating the muon's anomalous magnetic moment, highlighting improved observables that reduce errors and enhance the potential for lattice results to match experimental precision.

Contribution

It introduces improved observables for lattice calculations of g-2, significantly reducing errors and advancing the accuracy of theoretical predictions.

Findings

Improved observables reduce lattice errors in g-2 calculations.

Lattice accuracy can potentially match experimental precision.

The approach offers a promising path for precise theoretical predictions.

Abstract

We give a short description of the present situation of lattice QCD simulations. We then focus on the computation of the anomalous magnetic moment of the muon using lattice techniques. We demonstrate that by employing improved observables for the muon anomalous magnetic moment, a significant reduction of the lattice error can be obtained. This provides a promising scenario that the accuracy of lattice calculations can match the experimental errors.