On the Hadronic Contribution to Light-by-light Scattering in $g_μ-2$

Details On the Hadronic Contribution to Light-by-light Scattering in $g_μ-2$ On the Hadronic Contribution to Light-by-light Scattering in $g_μ-2$

1993-08-09

arxiv.org/abs/hep-ph/9308254v3

Phys.Rev. D49 (1994) 1668-1671

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, no figures, U. Michigan UM-TH-93-18. (Input phyzzm to compile.) Revised version has minor changes in text. To be publ

Scientific paper

10.1103/PhysRevD.49.1668

We comment on the theoretical uncertainties involved in estimating the hadronic effects on the light-by-light scattering contribution to the anomalous magnetic moment of the muon, especially based on the analysis and results of T. Kinoshita, B. Ni\v zi\'c, and Y. Okamoto, Phys.\ Rev.\ D31, 2108 (1985). From the point of view of an effective field theory and chiral perturbation theory, we suggest that the charged pion contribution may be better determined than has been appreciated. However, the neutral pion contribution needs greater theoretical insight before its magnitude can be reliably estimated.

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