Antiproton magnetic moment determined from the HFS of antiprotonic helium

Details Antiproton magnetic moment determined from the HFS of antiprotonic helium Antiproton magnetic moment determined from the HFS of antiprotonic helium

2009-05-05

arxiv.org/abs/0905.0545v1

Physics

Atomic Physics

Scientific paper

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 is -2.7862 (83) nuclear magnetons, which agrees with the magnetic moment of the proton within 2.9 x 10e-3.

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