Speaker
Dr
Randolf Pohl
(Max-Planck-Institut für Quantenoptik)
Description
The measurement of the Lamb shift in muonic hydrogen has resulted in a tenfold improved value of the RMS charge radius of the proton, compared to previous determinations from elastic electron-proton scattering and hydrogen spectroscopy. The muonic and the electronic values of the proton radius differ, however, by more than 7 standard deviations.
Laser spectroscopy of muonic deuterium and muonic helium ions is expected to shed new light on this so-called "proton radius puzzle".
Primary author
Dr
Randolf Pohl
(Max-Planck-Institut für Quantenoptik)
