arXiv:2002.12347hep-lat
Leading hadronic contribution to the muon magnetic moment from lattice QCD
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Abstract
We compute the leading order hadronic vacuum polarization (LO-HVP) contribution to the anomalous magnetic moment of the muon, $(g_μ-2)$, using lattice QCD. Calculations are performed with four flavors of 4-stout-improved staggered quarks, at physical quark masses and at six values of the lattice spacing down to 0.064~fm. All strong isospin breaking and electromagnetic effects are accounted for to leading order. The infinite-volume limit is taken thanks to simulations performed in volumes of sizes up to 11~fm. Our result for the LO-HVP contribution to $(g_μ-2)$ has a total uncertainty of 0.8\%. Compared to the result of the dispersive approach for this contribution, ours significantly reduces the tension between the standard model prediction for $(g_μ-2)$ and its measurement.
On the BMW collaboration with the lattice qcd computational estimate - This is a pre-print https://arxiv.org/abs/2002.12347 This is the link to the Nature publication: https://www.nature.com/articles/s41586-021-03418-1
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