Nuclear-structure corrections to the hyperfine splitting in muonic deuterium

TL;DR

This paper calculates nuclear structure corrections to the hyperfine splitting in muonic deuterium, revealing significant discrepancies with previous theoretical results and experimental measurements, which could impact the understanding of nuclear effects in muonic atoms.

Contribution

The study provides new calculations of nuclear structure corrections to hyperfine splitting in muonic deuterium, challenging prior results and highlighting a substantial disagreement with experimental data.

Findings

Results disagree with previous calculations.

Significant 5-sigma discrepancy with experimental data.

Implications for nuclear models in muonic atoms.

Abstract

Nuclear structure corrections of orders $Z\alpha\, E_F$ and $(Z\alpha)^2 E_F$ are calculated for the hyperfine splitting of the muonic deuterium. The obtained results disagree with previous calculations and lead to a $5\,\sigma$ disagreement with the current experimental value of the $2S$ hyperfine splitting in $\mu$D.