Speaker
Prof.
Krzysztof Pachucki
(University of Warsaw)
Description
The finite nuclear mass $(Z\,\alpha)^2\,m/M\,E_F$ correction to the hyperfine splitting in hydrogenic systems are calculated using
a combined relativistic heavy particle and nonrelativistic quantum electrodynamics. Obtained results are in disagreement with previous calculations
by Bodwin and Yennie [Phys. Rev. D {\bf 37}, 498 (1988)].
The comparison of improved theoretical predictions with the corresponding measurements in hydrogen reveals $5\sigma$ discrepancy,
what may indicate problems with the proton structure corrections.
Author
Prof.
Krzysztof Pachucki
(University of Warsaw)
Co-authors
Mx
Andrzej Maroń
(University of Warsaw)
Mx
Jakub Hevler
(University of Warsaw)