Short-distance constraints on the hadronic light-by-light

Abstract

The muon anomalous magnetic moment continues to attract interest due to the potential tension between experimental measurement [1,2] and the Standard Model prediction [3]. The hadronic light-by-light contribution to the magnetic moment is one of the two diagrammatic topologies currently saturating the theoretical uncertainty. With the aim of improving precision on the hadronic light-by-light in a data-driven approach founded on dispersion theory [4,5], we derive various short-distance constraints of the underlying correlation function of four electromagnetic currents. Here, we present our previous progress in the purely short-distance regime and current efforts in the so-called Melnikov-Vainshtein limit.

arXiv commentProceedings for "The XVth Quark Confinement and the Hadron Spectrum conference", Stavanger, Norway, August 2022

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Cited by in corpus (3)

• The QED four-photon amplitudes off-shell: part 2
• The QED four -- photon amplitudes off-shell: part 1
• Hadronic Light by Light Corrections to the Muon Anomalous Magnetic Moment