Abstract
The deuteron charge radius is calculated from the measurement of the Lamb shift in muonic deuterium, taking into account the electron vacuum polarization correction to the nuclear-structure effects. This correction is unexpectedly large and gives a mean-square charge-radii difference , which is now consistent with that obtained from the ordinary H-D isotope shift in the transition. This suggests that the long-standing discrepancy in the proton charge radius obtained from electronic and muonic systems is due to an underestimated uncertainty in ordinary hydrogen spectroscopy.
- Received 28 December 2018
DOI:https://doi.org/10.1103/PhysRevA.99.030501
©2019 American Physical Society
Physics Subject Headings (PhySH)
Atomic, Molecular & Optical