New Measurement of the Electron Magnetic Moment Using a One-Electron Quantum Cyclotron

B. Odom, D. Hanneke, B. D’Urso, and G. Gabrielse
Phys. Rev. Lett. 97, 030801 – Published 17 July 2006; Erratum Phys. Rev. Lett. 99, 039902 (2007)

Abstract

A new measurement resolves cyclotron and spin levels for a single-electron quantum cyclotron to obtain an electron magnetic moment, given by g/2=1.00115965218085(76)[0.76ppt]. The uncertainty is nearly 6 times lower than in the past, and g is shifted downward by 1.7 standard deviations. The new g, with a quantum electrodynamics (QED) calculation, determines the fine structure constant with a 0.7 ppb uncertainty—10 times smaller than for atom-recoil determinations. Remarkably, this 100 mK measurement probes for internal electron structure at 130 GeV.

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  • Received 17 May 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.030801

©2006 American Physical Society

Erratum

Erratum: New Determination of the Fine Structure Constant from the Electron g Value and QED [Phys. Rev. Lett. 97, 030802 (2006)]

G. Gabrielse, D. Hanneke, T. Kinoshita, M. Nio, and B. Odom
Phys. Rev. Lett. 99, 039902 (2007)

Authors & Affiliations

B. Odom*, D. Hanneke, B. D’Urso, and G. Gabrielse

  • Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA

  • *Present address: University of Chicago, Chicago, IL 60637, USA.
  • Present address: Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
  • Electronic address: gabrielse@physics.harvard.edu

See Also

New Determination of the Fine Structure Constant from the Electron g Value and QED

G. Gabrielse, D. Hanneke, T. Kinoshita, M. Nio, and B. Odom
Phys. Rev. Lett. 97, 030802 (2006)

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Vol. 97, Iss. 3 — 21 July 2006

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