Two-photon exchange on neutron and the hyperfine splitting

Abstract

We calculate the contribution from the two-photon exchange on the neutron to the hyperfine splitting of S energy levels. We update the value of the neutron Zemach radius, estimate total recoil and polarizability corrections. The resulting two-photon exchange in electronic atoms exceeds by an order of magnitude the leading Zemach term and has different sign both in electronic and muonic hydrogen.

5 pages, 2 figures

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Cited by in corpus (5)

• Parameterization and applications of the low-$Q^2$ nucleon vector form factors
• Nuclear polarizability effects in ${}^3$He${}^{+}$ hyperfine splitting
• Nuclear recoil correction to the hyperfine splitting in atomic systems
• Smallness of the nuclear polarization effect in the hyperfine structure of heavy muonic atoms as a stimulus for next-generation experiments
• Laser excitation of the 1s-hyperfine transition in muonic hydrogen