The contribution of axial-vector mesons to hyperfine structure of muonic hydrogen

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.

14 pages, 2 figures

References in corpus (3)

• The RMS Charge Radius of the Proton and Zemach Moments
• The pseudoscalar hadronic channel contribution of the light-by-light process to the muon (g-2) within the nonlocal chiral quark model
• The light-by-light contribution to the muon (g-2) from lightest pseudoscalar and scalar mesons within nonlocal chiral quark model

Cited by in corpus (3)

• All the Fun of the FAIR: Fundamental physics at the Facility for Antiproton and Ion Research
• The LbL contribution to the muon g-2 from the axial-vector mesons exchanges within the nonlocal quark model
• Axial meson contribution to proton form factors