arXiv:1707.04138·v3·High Energy Physics — Phenomenology
The contribution of axial-vector mesons to hyperfine structure of muonic hydrogen
A.E. Dorokhov🇷🇺 · N.I. Kochelev🇨🇳 · A.P. Martynenko🇷🇺 · F.A. Martynenko🇷🇺 · A.E. Radzhabov🇨🇳
Abstract
The contribution from the axial-vector meson exchange to the potential of the muon-proton interaction in muonic hydrogen induced by anomalous axial-vector meson coupling to two photon state is calculated. It is shown that such contribution to the hyperfine splitting in muonic hydrogen is large and important for a comparison with precise experimental data. In the light of our result, the proton radius "puzzle" is discussed.
Comments: 14 pages, 2 figures