Determination of the antiproton-to-electron mass ratio by precision laser spectroscopy of p̄He+

M. Hori, A. Dax, J. Eades, K. Gomikawa, R. S. Hayano, N. Ono, W. Pirkl, E. Widmann, H. A. Torii, B. Juhász, D. Barna, D. Horváth

Research output: Contribution to journalArticle

121 Citations (Scopus)

Abstract

A femtosecond optical frequency comb and continuous-wave pulse-amplified laser were used to measure 12 transition frequencies of antiprotonic helium to fractional precisions of (9-16)×10-9. One of these is between two states having microsecond-scale lifetimes hitherto unaccessible to our precision laser spectroscopy method. Comparisons with three-body QED calculations yielded an antiproton-to-electron mass ratio of Mp̄/me=1836.152674(5).

Original languageEnglish
Article number243401
JournalPhysical Review Letters
Volume96
Issue number24
DOIs
Publication statusPublished - 2006

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electron mass
antiprotons
laser spectroscopy
mass ratios
continuous radiation
helium
life (durability)
pulses
lasers

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Determination of the antiproton-to-electron mass ratio by precision laser spectroscopy of p̄He+. / Hori, M.; Dax, A.; Eades, J.; Gomikawa, K.; Hayano, R. S.; Ono, N.; Pirkl, W.; Widmann, E.; Torii, H. A.; Juhász, B.; Barna, D.; Horváth, D.

In: Physical Review Letters, Vol. 96, No. 24, 243401, 2006.

Research output: Contribution to journalArticle

Hori, M, Dax, A, Eades, J, Gomikawa, K, Hayano, RS, Ono, N, Pirkl, W, Widmann, E, Torii, HA, Juhász, B, Barna, D & Horváth, D 2006, 'Determination of the antiproton-to-electron mass ratio by precision laser spectroscopy of p̄He+', Physical Review Letters, vol. 96, no. 24, 243401. https://doi.org/10.1103/PhysRevLett.96.243401
Hori, M. ; Dax, A. ; Eades, J. ; Gomikawa, K. ; Hayano, R. S. ; Ono, N. ; Pirkl, W. ; Widmann, E. ; Torii, H. A. ; Juhász, B. ; Barna, D. ; Horváth, D. / Determination of the antiproton-to-electron mass ratio by precision laser spectroscopy of p̄He+. In: Physical Review Letters. 2006 ; Vol. 96, No. 24.
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