Lepton anomalous magnetic moments — a theory update

✍ Scribed by Andrzej Czarnecki; William J. Marciano

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 545 KB
• Volume: 76
• Category: Article
• ISSN: 0920-5632
• DOI: 10.1016/s0920-5632(99)00474-0

✦ Synopsis

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