Measurement of the Electron Magnetic Moment

2023/02/13 by Xing Fan, Thomas G. Myers, Benedict Sukra +1 · 1 voice · 17 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Radioactive Decay and Measurement Techniques #Solar and Space Plasma Dynamics

paper · doi:10.1103/physrevlett.130.071801

openalex publication_date 2023/02/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

The electron magnetic moment, -μ/μ_B=g/2=1.001 159 652 180 59 (13) [0.13 ppt], is determined 2.2 times more accurately than the value that stood for fourteen years. The most precisely determined property of an elementary particle tests the most precise prediction of the standard model (SM) to 1 part in 10¹². The test would improve an order of magnitude if the uncertainty from discrepant measurements of the fine structure constant α is eliminated since the SM prediction is a function of α. The new measurement and SM theory together predict α^-1=137.035 999 166 (15) [0.11 ppb] with an uncertainty 10 times smaller than the current disagreement between measured α values.

Citations

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• The anomalous magnetic moment of the muon in the Standard Model
• A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems
• The anomalous magnetic moment of the muon in the Standard Model
• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm

Cited by

• Emergent Gauge Symmetries in Particle Physics and Cosmology
• Comprehensive Inclusion of Higher-order Ca⁺ Isotope Shifts in the King's Plot Yields an Order Improvement on the e^--n Coupling Limit
• Probing Nuclear Interactions Through Isotope Shift Spectroscopy of Mercury
• Muonium HFS Uncertainty Revisited
• Probing the Critical Point (CritPt) of AI Reasoning: a Frontier Physics Research Benchmark
• Extra force in charged resonant capacitors: a new macroscopic effect of vacuum fluctuations ?
• Gravity generated by four one-dimensional unitary gauge symmetries and the Standard Model
• Hadronic light-by-light scattering in the anomalous magnetic moments of electron and τ
• Perturbative QCD below charm threshold: theory and tensions with e⁺e^- data
• Pion <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>β</mml:mi> </mml:math> Decay and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi>τ</mml:mi> <mml:mo stretchy="false">→</mml:mo> <mml:mi>π</mml:mi> <mml:mi>π</mml:mi> <mml:msub> <mml:mi>ν</mml:mi> <mml:mi>τ</mml:mi> </mml:msub> </mml:math> beyond Leading Logarithms
• UV origins of CP-violating leptonic Yukawa couplings
• Probing a Light Scalar Boson with a few-MeV Proton Beam Deep Underground
• Solving the nonlinear Klein-Gordon equation: semianalytical Galerkin method
• Vectorlike lepton imprints at lepton g-2 measurements and e⁺e^- colliders
• Dark Sector Electroweak Baryogenesis In Light Of The Galactic Center Excess
• Models for the Electric Dipole Moment and Anomalous Magnetic Moment of the Tau Lepton
• The sixth order QED radiative corrections to lepton anomalies due to the fourth order vacuum polarization insertions within the Mellin-Barnes representation

Discussions

• From an experimental perspective, yes this is completely impossible, at least as you described with a beam passing through a Stern-Gerlach apparatus. The forces between the electron's charge and the m [stackexchange, 7 points]

Related

• Measured Lepton Magnetic Moments
• The Muon Anomalous Magnetic Moment
• Considerations about the measurement of the magnetic moment and electric dipole moment of the electron
• Theory of the Anomalous Magnetic Moment of the Electron
• New Experiments to Measure the Muon Anomalous Gyromagnetic Moment