Measurement of the hyperfine structure of antihydrogen

Among the best measured quantities in physics is the microwave transition between the ground-state hyperfine levels of the hydrogen atom at ν HF=1.42 GHz with δ ν HF/ ν HF∼10 −12. A measurement of ν HF for antihydrogen therefore constitutes a sensitive test of CPT symmetry. To the leading order, ν H...

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Bibliographic Details
Published inNuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 214; pp. 31 - 34
Main Authors Widmann, E., Hayano, R.S., Hori, M., Yamazaki, T.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2004
Subjects
Antihydrogen
CPT symmetry
Hyperfine structure
Hyperfine structure
32.30.Bv
Antihydrogen
32.10.Fn
CPT symmetry
36.10.−k
11.30.Er
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Summary:Among the best measured quantities in physics is the microwave transition between the ground-state hyperfine levels of the hydrogen atom at ν HF=1.42 GHz with δ ν HF/ ν HF∼10 −12. A measurement of ν HF for antihydrogen therefore constitutes a sensitive test of CPT symmetry. To the leading order, ν HF ( H ) is directly proportional to the magnetic moment of the antiproton, which is experimentally known only to 0.3%. This paper describes a planned measurement of ν HF for antihydrogen with an accuracy better than 10 −6 using atomic beams.
ISSN:0168-583X
1872-9584
DOI:10.1016/j.nimb.2003.08.021