The Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment: Where do we stand?

Details The Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment: Where do we stand? The Hadronic Light-by-Light Contribution to the Muon Anomalous Magnetic Moment: Where do we stand?

2007-02-16

arxiv.org/abs/hep-ph/0702170v1

Mod.Phys.Lett.A22:767-782,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 9 figures

Scientific paper

10.1142/S0217732307022992

We review the status of the hadronic light-by-light contribution to the muon anomalous magnetic moment and critically compare recent calculations. We also study in detail which momentum regions the pi^0 exchange main contribution originates. We also argue that a_\mu^{light-by-light} = (11 \pm 4) \times 10^{-10} encompasses the present understanding of this contribution and comment on some directions to improve on that.

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