Theory of the Hadronic Light-by-Light Contribution to Muon g-2

Abstract

I report on the theory, recent calculations and present status of the hadronic light-by-light contribution to muon g-2. In particular, I report on work done together with Eduardo de Rafael and Arkady Vainshtein where we get a^{HLbL} = (10.5 +- 2.6) x 10^{-10} as our present result for this quantity.

Comments: 11 pages, Invited talk at "Sixth International Workshop on Chiral Dynamics", July 6-10, 2009, Bern, Switzerland