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 publicationINTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS
Subtitle of host publication9th Conference on the Intersections of Particle and Nuclear Physics, CIPAN2006
Pages328-332
Number of pages5
DOIs
StatePublished - 2006
EventINTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS: 9th Conference on the Intersections of Particle and Nuclear Physics, CIPAN2006 - Rio Grande, Puerto Rico
Duration: May 30 2006Jun 3 2006

Publication series

NameAIP Conference Proceedings
Volume870
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherINTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS: 9th Conference on the Intersections of Particle and Nuclear Physics, CIPAN2006
CountryPuerto Rico
CityRio Grande
Period5/30/066/3/06

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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