Hadronic light-by-light scattering contribution to the muon magnetic anomaly: constituent quark loops and QCD effects

Abstract

The hadronic light-by-light scattering contribution to the muon anomalous magnetic moment can be estimated by computing constituent quark loops. Such an estimate is very sensitive to the numerical values of the constituent quark masses. These can be fixed by computing the hadronic vacuum polarization contribution to the muon magnetic anomaly within the same model. In this Letter, we demonstrate the stability of this framework against first-order perturbative QCD corrections.

4 pages, 1 figure

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• Muon g-2: Review of Theory and Experiment
• Calculating the hadronic vacuum polarization and leading hadronic contribution to the muon anomalous magnetic moment with improved staggered quarks
• Pions in Large-$N$ Quantum Chromodynamics
• Upper Bound on the Hadronic Light-by-Light Contribution to the Muon g-2

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