Two-photon exchange on the neutron and the hyperfine splitting

6533b822fe1ef96bd127ce38

RESEARCH PRODUCT

Two-photon exchange on the neutron and the hyperfine splitting

Oleksandr Tomalak Oleksandr Tomalak Oleksandr Tomalak

subject

Physics Nuclear Theory Atomic Physics (physics.atom-ph)FOS: Physical sciences Radius Physics - Atomic Physics Nuclear Theory (nucl-th)High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph)Recoil Polarizability Neutron Physics::Atomic Physics Nuclear Experiment (nucl-ex)Atomic physics Nuclear Experiment Hyperfine structure Order of magnitude Exotic atom Sign (mathematics)

description

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.

year	journal	country	edition	language
2018-12-10	Physical Review D

https://doi.org/10.1103/physrevd.99.056018

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