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New experimental constraints on polarizability corrections to hydrogen hyperfine structure

Vahagn Nazaryan·Carl E. Carlson·Keith A. Griffioen
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Abstract

We present a state-of-the-art evaluation of the polarizability corrections--the inelastic nucleon corrections--to the hydrogen ground-state hyperfine splitting using analytic fits to the most recent data. We find a value $Δ_{\rm pol} = 1.3 \pm 0.3$ ppm. This is 1--2 ppm smaller than the value of $Δ_{\rm pol}$ deduced using hyperfine splitting data and elastic nucleon corrections obtained from modern form factor fits.

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Vahagn Nazaryan, Carl E. Carlson, Keith A. Griffioen. 2006-05-18. New experimental constraints on polarizability corrections to hydrogen hyperfine structure. https://doi.org/10.1103/physrevlett.96.163001

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