Determining the antiproton magnetic moment from measurements of the hyperfine structure of antiprotonic helium

Details Determining the antiproton magnetic moment from measurements of the hyperfine structure of antiprotonic helium Determining the antiproton magnetic moment from measurements of the hyperfine structure of antiprotonic helium

2006-12-02

arxiv.org/abs/physics/0612021v3

Phys.Rev.A75:012512,2007

Physics

Atomic Physics

Phys. Rev. A, in print

Scientific paper

10.1103/PhysRevA.75.012512

Recent progress in the spectroscopy of antiprotonic helium has allowed for measuring the separation between components of the hyperfine structure (HFS) of the (37,35) metastable states with an accuracy of 300 MHz, equivalent to a relative accuracy of 3x10^{-5}. The analysis of the uncertainties of the available theoretical results on the antiprotonic helium HFS shows that the accuracy of the value of the dipole magnetic moment of the antiproton (currently known to only 0.3 %) may be improved by up to 2 orders of magnitude by measuring the splitting of appropriately selected components of the HFS of any of the known metastable states. The feasibility of the proposed measurement by means of an analog of the triple resonance method is also discussed.

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