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The Lamb shift in muonic hydrogen and the proton radius puzzle

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Abstract

The recent measurement of the Lamb shift in muonic hydrogen resulted in a tenfold improved value of the rms charge radius of the proton. The value is, however, 7 standard deviations discrepant from the world average of this quantitiy which is obtained from elastic electron-proton scattering and precision spectroscopy of hydrogen and deuterium. New input from both theory and experiment is needed to resolve this so-called “proton radius puzzle”.

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Authors and Affiliations

  1. Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, 85748, Garching, Germany

    Randolf Pohl

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  1. Randolf Pohl
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for the CREMA collaboration

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Correspondence to Randolf Pohl.

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Proceedings of the 9th InternationalWorkshop on Application of Lasers and Storage Devices in Atomic Nuclei Research “Recent Achievements and Future Prospects” (LASER 2013) held in Poznan, Poland, 13–16 May, 2013

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Pohl, R., for the CREMA collaboration. The Lamb shift in muonic hydrogen and the proton radius puzzle. Hyperfine Interact 227, 23–28 (2014). https://doi.org/10.1007/s10751-014-1011-1

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