Lepton anomalous magnetic moments — a theory update
1999; Elsevier BV; Volume: 76; Issue: 1-3 Linguagem: Inglês
10.1016/s0920-5632(99)00474-0
ISSN1873-3832
AutoresAndrzej Czarnecki, William J. Marciano,
Tópico(s)Black Holes and Theoretical Physics
ResumoStandard Model contributions to the electron, muon, and tau lepton anomalous magnetic moments, a1 = (gl−2)2, are reviewed and upddated. The fine structure constant is obtained from the electron ge−2 and used to refine the QED contribution to the muon gμ−2. Recent advances in electroweak and hadronic effects on gμ−2 are summarized. Examples of “New Physics” probed by the aμ Brookhaven experiment E821 are outlined. The prediction for aτ is also given.
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