Lepton anomalous magnetic moments — a theory update

1998/10/28 by Andrzej Czarnecki, William J. Marciano · 2 citations
Physics and Astronomy · #Anomalous magnetic dipole moment #Black Holes and Theoretical Physics #Condensed matter physics #Electron #Electron magnetic dipole moment #Electroweak interaction #Hadron #Lepton #Magnetic field #Magnetic moment #Magnetization #Muon #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Standard Model (mathematical formulation) #hep-ph

paper · pdf · doi:10.1016/s0920-5632(99)00474-0

published as Nucl.Phys.Proc.Suppl. 76 (1999) 245-252 · 8 pages; invited talk at the 5th International Workshop on Tau Lepton Physics (Tau'98), September 1998, Santander, Spain

arxiv created 1998/10/28 · openalex publication_date 1999/04/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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.

Citations

• Hadronic contributions to the muon g−2 and low-energy QCD
• Constraints on supersymmetric models from the muon anomalous magnetic moment
• Constraints on anomalous gauge couplings from present LEP1 and future LEP2, BNL data
• On Quantum-Electrodynamics and the Magnetic Moment of the Electron

Cited by

• Recent Muon g−2 result in deflected anomaly-mediated supersymmetry breaking
• Upper Limits on Sparticle Masses fromg−2and the Possibility for Discovery of Supersymmetry at Colliders and in Dark Matter Searches