Proposed measurement of the ground-state hyperfine structure of antihydrogen |
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Authors: | B Juhász E Widmann |
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Institution: | (1) Stefan Meyer Institute for Subatomic Physics, Boltzmanngasse 3, 1090 Wien, Austria |
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Abstract: | The ASACUSA collaboration at CERN-AD has recently submitted a proposal to measure the hyperfine splitting of the ground state
of antihydrogen in an atomic beam line. The spectrometer will consist of two sextupoles for spin selection and analysis, and
a microwave cavity to flip the spin of the antihydrogen atoms. Numerical simulations show that such an experiment is feasible
if ~200 antihydrogen atoms per second can be produced in the ground state, and that an accuracy of better than 10–7 can be reached. This measurement will be a precise test of the CPT invariance.
B. Juhász serves as one of the authors of this article on behalf of the ASACUSA collaboration. |
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Keywords: | CPT invariance Antihydrogen Hyperfine structure Atomic beam Microwave spectroscopy |
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