Hadronic Light-by-light Scattering Effect on Muon g-2

Details Hadronic Light-by-light Scattering Effect on Muon g-2 Hadronic Light-by-light Scattering Effect on Muon g-2

1995-03-29

arxiv.org/abs/hep-ph/9503463v1

Phys.Rev.Lett. 75 (1995) 790-793

Physics

High Energy Physics

High Energy Physics - Phenomenology

Revtex, 11 pages plus two uuencoded figures

Scientific paper

10.1103/PhysRevLett.75.790

The hadronic light-by-light scattering contribution to muon $g-2$ is examined using low energy effective theories of QCD, the Nambu-Jona-Lasinio model and hidden local chiral symmetry, as guides. Our result is $- 36 \times 10^{-11}$ with an uncertainty of $\pm 16 \times 10^{-11}$, 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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