Hyperfine Structure Measurements of Antiprotonic Helium and Antihydrogen

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dc.creatorWidmann, E.
dc.creatorEades, J.
dc.creatorHayano, R. S.
dc.creatorHori, M.
dc.creatorHorvath, D.
dc.creatorIshikawa, T.
dc.creatorJuhasz, B.
dc.creatorSakaguchi, J.
dc.creatorTorii, H. A.
dc.creatorYamaguchi, H.
dc.creatorYamazaki, T.
dc.date2001-02-06
dc.date.accessioned2026-07-07T05:36:43Z
dc.date.available2026-07-07T05:36:43Z
dc.descriptionThis paper describes measurements of the hyperfine structure of two antiprotonic atoms that are planned at the Antiproton Decelerator (AD) at CERN. The first part deals with antiprotonic helium, a three-body system of alpha-particle, antiproton and electron that was previously studied at LEAR. A measurement will test existing three-body calculations and may - through comparison with these theories - determine the magnetic moment of the antiproton more precisely than currently available, thus providing a test of CPT invariance. The second system, antihydrogen, consisting of an antiproton and a positron, is planned to be produced at thermal energies at the AD. A measurement of the ground-state hyperfine splitting, which for hydrogen is one of the most accurately measured physical quantities, will directly yield a precise value for the magnetic moment of the antiproton, and also compare the internal structure of proton and antiproton through the contribution of the magnetic size of the antiproton to the ground state hyperfine splitting.
dc.descriptionProceedings of the Hydrogen II workshop, Castiglione della Pescaia, June 1 --3, 2000, 15 pages, 8 figures
dc.identifierhttps://arxiv.org/abs/nucl-ex/0102002
dc.identifierhttp://arxiv.org/abs/nucl-ex/0102002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/81092
dc.subjectNuclear Experiment
dc.subjectHigh Energy Physics - Experiment
dc.subjectAtomic Physics
dc.titleHyperfine Structure Measurements of Antiprotonic Helium and Antihydrogen
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