Refinements in electroweak contributions to the muon anomalous magnetic moment
By A. Czarnecki, W. Marciano, A. Vainshtein. 2002
443 citations recorded by the source corpus.
Effects of strong interactions on the two loop electroweak radiative corrections to the muon anomalous magnetic moment, $a_\mu=(g_\mu-2)/2$, are examined. Short-distance logs are shown to be unaffected. Computation of long-distance contributions is improved by use of an effective field theory approach that preserves the chiral properties of QCD and accounts for constraints from the operator product expansion. Small, previously neglected, two loop contributions, suppressed by a $1-4\sin^2\theta_W$ factor, are computed and the complete three loop leading short-distance logs are reevaluated. These refinements lead to a reduction in uncertainties and a slight shift in the total electroweak contribution to $a_\mu^{\rm EW} = 154(1)(2)\times 10^{-11}$ where the first error corresponds to hadronic uncertainties and the second is primarily due to the allowed Higgs mass range.
View Paper: https://www.semanticscholar.org/paper/961a5f234c47abab41ddb6abbdaa00303baa2498
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Citations in the corpus
- Dispersion relation for hadronic light-by-light scattering: pion pole (2018, background): “The dominant SM uncertainty arises from hadronic contributions [11–13], given that the uncertainty estimates of QED up to five loops [14–16] (with analytical cross checks evaluated to four-loop order [17–19]) and electroweak contributions to two loops (including three-loop leading logarithms) [20, 2”
- Short-distance constraints for the HLbL contribution to the muon anomalous magnetic moment (2019, methodology): “1We realized during the course of this work that a similar method has been used for another contribution to aHLbL μ in [16].”
- Renormalisation-group improved analysis of μ → e processes in a systematic effective-field-theory approach (2017, background): “Also in the case of (g − 2)μ (lepton-flavour conserving effective interactions), the QED running and mixing among a basis of SM-induced operators has been included [22].”
- Measurement of the anomalous precession frequency of the muon in the Fermilab Muon g−2 Experiment (2021, background): “[15] A.”