New measurement of the electron magnetic moment and the fine structure constant

G. Gabrielse*, D. Hanneke

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new measurement resolves the cyclotron and spin levels for a single-electron quantum cyclotron to obtain a dimensionless electron magnetic moment, g, to 7.6 parts in 1013 (nearly six times better than in the past) and shifted 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 - ten times smaller than for atom-recoil determinations. Remarkably, this 100 mK measurement probes for internal electron structure at 130 GeV.

Original languageEnglish (US)
Title of host publicationAtomic Physics 20 - XX International Conference on Atomic Physics, ICAP 2006
Pages68-75
Number of pages8
DOIs
StatePublished - Dec 1 2006
Event20th International Conference on Atomic Physics, ICAP 2006 - Innsbruck, Austria
Duration: Jul 16 2006Jul 21 2006

Publication series

NameAIP Conference Proceedings
Volume869
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other20th International Conference on Atomic Physics, ICAP 2006
CountryAustria
CityInnsbruck
Period7/16/067/21/06

Keywords

  • Electron g value
  • Electron magnetic moment
  • Fine structure constant
  • Quantum cyclotron

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Gabrielse, G., & Hanneke, D. (2006). New measurement of the electron magnetic moment and the fine structure constant. In Atomic Physics 20 - XX International Conference on Atomic Physics, ICAP 2006 (pp. 68-75). (AIP Conference Proceedings; Vol. 869). https://doi.org/10.1063/1.2400635