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High-Resolution Hydrogen Spectroscopy and the Proton Radius Puzzle

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arxiv 1903.04252 v1 pith:HMNTVALZ submitted 2019-03-11 physics.atom-ph

classification physics.atom-ph
keywords hydrogenprotonradiuspuzzlespectroscopyaccuratelyallowsatom
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High resolution spectroscopy of the hydrogen atom takes on particular importance in the new SI, as it allows to accurately determine fundamental constants, such as the Rydberg constant and the proton charge radius. Recently, the second most precisely measured transition frequency in hydrogen, 1S - 3S, was obtained in our group. In the context of the Proton Radius Puzzle, this result calls for further investigation.

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