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arXiv · 2211.04068

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

Johan Bijnens·Nils Hermansson-Truedsson·Antonio Rodríguez-Sánchez
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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.

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Johan Bijnens, Nils Hermansson-Truedsson, Antonio Rodríguez-Sánchez. 2022-11-08. Short-distance constraints on the hadronic light-by-light. https://doi.org/10.1051/epjconf/202227406010

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