Proton polarizability and the Lamb shift in muonic hydrogen

TL;DR

This paper evaluates the proton polarizability contribution to the Lamb shift in muonic hydrogen using modern experimental data, finding it to be approximately 4.4 GHz, which impacts precision measurements of proton structure.

Contribution

It provides a modern, data-driven calculation of proton polarizability effects on the Lamb shift in muonic hydrogen, improving previous estimates.

Findings

Proton polarizability contribution is about 4.4 GHz.

Uses modern deep inelastic scattering data.

Refines understanding of proton structure effects.

Abstract

The proton structure and proton polarizability corrections to the Lamb shift of electronic hydrogen and muonic hydrogen were evaluated on the basis of modern experimental data on deep inelastic structure functions. Numerical value of proton polarizability contribution to (2P-2S) Lamb shift is equal to 4.4 GHz.