Lepton anomalous magnetic moments - a theory update

Details Lepton anomalous magnetic moments - a theory update Lepton anomalous magnetic moments - a theory update

1998-10-28

arxiv.org/abs/hep-ph/9810512v1

Nucl.Phys.Proc.Suppl. 76 (1999) 245-252

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages; invited talk at the 5th International Workshop on Tau Lepton Physics (Tau'98), September 1998, Santander, Spain

Scientific paper

10.1016/S0920-5632(99)00474-0

Standard Model contributions to the electron, muon, and tau lepton anomalous magnetic moments, a_l=(g_l-2)/2, are reviewed and updated. The fine structure constant is obtained from the electron g_e-2 and used to refine the QED contribution to the muon g_mu-2. Recent advances in electroweak and hadronic effects on g_mu-2 are summarized. Examples of ``New Physics'' probed by the a_mu Brookhaven experiment E821 are outlined. The prediction for a_tau is also given.

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