Hadronic light-by-light scattering contribution to the muon g-2

Details Hadronic light-by-light scattering contribution to the muon g-2 Hadronic light-by-light scattering contribution to the muon g-2

2002-09-27

arxiv.org/abs/hep-ph/0209329v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages including 2 figures, Latex, uses espcrc2.sty; Talk presented at the 9th International High-Energy Physics Conference i

Scientific paper

10.1016/S0920-5632(03)01843-7

We briefly review the current status of the hadronic light-by-light scattering correction to the muon g-2. Then we present our semi-analytical evaluation of the pion-pole contribution, using a description of the pion-photon-photon form factor based on large-N_C and short-distance properties of QCD. We also sketch an effective field theory approach to hadronic light-by-light scattering. In view of several still unsolved problems, our conservative estimate for the full hadronic light-by-light scattering contribution is a_{mu}(LbyL;had) = + 8 (4) x 10^{-10}.

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