Higher-order hadronic and heavy-lepton contributions to the anomalous magnetic moment
نویسندگان
چکیده
We report about recent results obtained for the muon anomalous magnetic moment. Three-loop kernel functions have been computed to obtain the next-to-next-to-leading-order hadronic vacuum polarization contributions. The numerical result, a had,NNLO μ = 1.24± 0.01× 10−10, is of the same order of magnitude as the current uncertainty from the hadronic contributions. For heavylepton corrections, analytical results are obtained at four-loop order and comparedwith the known results.
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