Vacuum polarisation and the muon g-2 in lattice QCD
M. G\"ockeler, R. Horsley, W. K\"urzinger, D. Pleiter, P.E.L. Rakow, and G. Schierholz
TL;DR
This paper calculates the hadronic vacuum polarisation contribution to the muon g-2 using lattice QCD, providing a first-principles estimate relevant for understanding potential deviations from the Standard Model.
Contribution
It introduces a lattice QCD approach to directly compute the hadronic vacuum polarisation contribution to muon g-2, improving theoretical precision.
Findings
Estimate of the hadronic contribution to (g-2)_mu from lattice QCD
Comparison with experimental and other theoretical results
Implications for the muon g-2 anomaly
Abstract
We measure the hadronic contribution to the vacuum polarisation tensor, and use it to estimate the hadronic contribution to (g-2)_mu, the muon anomalous magnetic moment.
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