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Hadronic light-by-light scattering contribution to the muon anomalous magnetic moment from lattice QCD

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 نشر من قبل Tom Blum
 تاريخ النشر 2014
  مجال البحث
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The form factor that yields the light-by-light scattering contribution to the muon anomalous magnetic moment is computed in lattice QCD+QED and QED. A non-perturbative treatment of QED is used and is checked against perturbation theory. The hadronic contribution is calculated for unphysical quark and muon masses, and only the diagram with a single quark loop is computed. Statistically significant signals are obtained. Initial results appear promising, and the prospect for a complete calculation with physical masses and controlled errors is discussed.



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