The Contribution of the Sigma-Meson to the Lamb Shift of Muonic Hydrogen
Abstract
The scalar meson exchange contribution to the potential of the muon-proton interaction in muonic hydrogen induced by the scalar meson coupling to two photon state is calculated. An estimate of transition form factor S \to γ γ is given on the basis of quark model and experimental data on the decay widths {{Γ }_{{Sγ γ }}}. It is shown that scalar meson exchange contribution to the Lamb shift in muonic hydrogen Δ {{E}^{{Ls}}}(2P - 2S) is large and important for a comparison with precise experimental data.
- Publication:
-
Physics of Particles and Nuclei Letters
- Pub Date:
- September 2019
- DOI:
- 10.1134/S1547477119050108
- Bibcode:
- 2019PPNL...16..520D
- Keywords:
-
- muonic hydrogen;
- Lamb shift;
- sigma-meson