Antiproton magnetic moment determined from the HFS of over(p, ̄) He+

T. Pask, D. Barna, A. Dax, R. S. Hayano, M. Hori, D. Horváth, S. Friedreich, B. Juhász, O. Massiczek, N. Ono, A. Sótér, E. Widmann

Research output: Article

35 Citations (Scopus)

Abstract

We report a determination of the antiproton magnetic moment, measured in a three-body system, independent of previous experiments. We present results from a systematic study of the hyperfine (HF) structure of antiprotonic helium where we have achieved a precision more than a factor of 10 better than our first measurement. A comparison between the experimental results and three-body quantum electrodynamic (QED) calculations leads to a new value for the antiproton magnetic moment μsover(p, ̄) = - 2.7862 (83) μN, which agrees with the magnetic moment of the proton within 2.9 × 10- 3.

Original languageEnglish
Pages (from-to)55-59
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume678
Issue number1
DOIs
Publication statusPublished - júl. 6 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Pask, T., Barna, D., Dax, A., Hayano, R. S., Hori, M., Horváth, D., Friedreich, S., Juhász, B., Massiczek, O., Ono, N., Sótér, A., & Widmann, E. (2009). Antiproton magnetic moment determined from the HFS of over(p, ̄) He+. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 678(1), 55-59. https://doi.org/10.1016/j.physletb.2009.05.038