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

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

1997-08-04

arxiv.org/abs/hep-ph/9708227v3

Phys.Rev. D57 (1998) 465-477; Erratum-ibid. D66 (2002) 019902

Physics

High Energy Physics

High Energy Physics - Phenomenology

43 pages, Revtex, four figures, cited values of hadronic vacuum polarization contributions and the references are up-dated, to

Scientific paper

10.1103/PhysRevD.57.465

The pseudoscalar pole contribution is the dominant source of the $ {\cal O}(\alpha^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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