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Pseudoscalar pole terms in the hadronic light-by-light scattering contribution to muon $ g - 2 $

M. Hayakawa·T. Kinoshita
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Abstract

The pseudoscalar pole contribution is the dominant source of the $ {\cal O}(α^3) $ hadronic light-by-light scattering effect in muon $g - 2$. We have examined this contribution taking account of the off-shell structure of the pseudoscalar-photon-photon anomaly vertex deduced from available experimental data. Our work leads to an improved estimate, $ -79.2 (15.4) \times 10^{-11}$, for the total hadronic light-by-light scattering contribution to the muon $g - 2$.

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M. Hayakawa, T. Kinoshita. 1997-10-23. Pseudoscalar pole terms in the hadronic light-by-light scattering contribution to muon $ g - 2 $. https://doi.org/10.1103/physrevd.57.465%2010.1103%2Fphysrevd.66.019902

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