619 citations · 1.2k across the 24 of their papers we have counts for
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physics.atom-ph2017★ 5 cited
The proton radius puzzle
J. J. Krauth, K. Schuhmann, M. Abdou Ahmed +49
High-precision measurements of the proton radius from laser spectroscopy of muonic hydrogen demonstrated up to six standard deviations smaller values than obtained from electron-pr…
physics.atom-ph2017★ 25 cited
Theory of the n=2 levels in muonic helium-3 ions
Beatrice Franke, Julian J. Krauth, Aldo Antognini +3
The present knowledge of Lamb shift, fine-, and hyperfine structure of the 2S and 2P states in muonic helium-3 ions is reviewed in anticipation of the results of a first measuremen…