4.4 Article

Two-photon exchange correction to the Lamb shift and hyperfine splitting of S levels

Journal

EUROPEAN PHYSICAL JOURNAL A
Volume 55, Issue 5, Pages -

Publisher

SPRINGER
DOI: 10.1140/epja/i2019-12743-1

Keywords

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Funding

  1. NIST precision measurement grant
  2. U.S. Department of Energy, Office of Science, Office of High Energy Physics [DE-SC0019095]
  3. Deutsche Forschungsgemeinschaft (DFG) through Collaborative Research Center The Low-Energy Frontier of the Standard Model [SFB 1044]
  4. Mainz Institute for Theoretical Physics (MITP)
  5. U.S. Department of Energy (DOE) [DE-SC0019095] Funding Source: U.S. Department of Energy (DOE)

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.We evaluate the two-photon exchange corrections to the Lamb shift and hyperfine splitting of S states in electronic hydrogen relying on modern experimental data and present the two-photon exchange on a neutron inside the electronic and muonic atoms. These results are relevant for the precise extraction of the isotope shift as well as in the analysis of the ground state hyperfine splitting in usual and muonic hydrogen.

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