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An atomic hydrogen beam to test ASACUSA's apparatus for antihydrogen spectroscopy

The ASACUSA collaboration aims to measure the ground state hyperfine splitting (GS-HFS) of antihydrogen, the antimatter pendant to atomic hydrogen. Comparisons of the corresponding transitions in those two systems will provide sensitive tests of the CPT symmetry, the combination of the three discrete symmetries charge conjugation, parity, and time reversal. For offline tests of the GS-HFS spectroscopy apparatus we constructed a source of cold polarised atomic hydrogen. In these proceedings we report the successful observation of the hyperfine structure transitions of atomic hydrogen with our apparatus in the earth's magnetic field.

preprint2015arXivOpen access
Martin DiermaierPeter CaradonnaBernadette KolbingerChloé MalbrunotOswald MassiczekClemens SauerzopfMartin C. SimonMichael WolfJohann ZmeskalEberhard Widmann
physics.atom-ph
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Martin DiermaierPeter CaradonnaBernadette KolbingerChloé MalbrunotOswald MassiczekClemens SauerzopfMartin C. SimonMichael WolfJohann ZmeskalEberhard Widmann

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