Hadronic Light-by-light Scattering Contribution to Muon $ g - 2 $

Details Hadronic Light-by-light Scattering Contribution to Muon $ g - 2 $ Hadronic Light-by-light Scattering Contribution to Muon $ g - 2 $

1996-01-23

arxiv.org/abs/hep-ph/9601310v1

Phys.Rev. D54 (1996) 3137-3153

Physics

High Energy Physics

High Energy Physics - Phenomenology

42 pages, Revtex 4 figures

Scientific paper

10.1103/PhysRevD.54.3137

The hadronic light-by-light scattering contribution to muon $g-2$ is examined based on the low energy effective theories of QCD, the Nambu-Jona-Lasinio model and hidden local symmetry approach, supplemented by a general information concerning the asymptotic behavior of QCD. Our result is $- 52 \times 10^{-11}$ with an uncertainty of $\pm 18 \times 10^{-11}$, which includes our best estimate of model dependence. This is within the expected measurement uncertainty of $40\times 10^{-11}$ in the forthcoming experiment at Brookhaven National Laboratory. Our result removes one of the main theoretical obstacles in verifying the existence of the weak contribution to the muon $g-2$.

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