Speaker
Dr
Jean-Philippe Karr
(Laboratoire Kastler Brossel (UPMC/CNRS/ENS/Collège de France))
Description
Ro-vibrational spectroscopy of the hydrogen molecular ions H2+ and HD+ is a promising path for fundamental constants metrology. It could improve the current knowledge of the proton-to-electron mass ratio and contribute to resolving the current discrepancy on the proton charge radius and/or Rydberg constant.
Very precise predictions of the transition frequencies, taking high-order QED corrections into account, are required for these objectives. The theoretical accuracy has been improved by several order of magnitude in recent years, reaching the 10^{-12} range [1]. I will describe the calculation of vacuum polarization contributions involving the Uehling potential [2]. The satus of our experiment for two-photon spectroscopy of H2+ will also be presented.
[1] V.I. Korobov, L. Hilico, and J.-Ph. Karr, Phys. Rev. Lett. 112, 103003 and Phys. Rev. A 89, 032511 (2014).
[2] J.-Ph. Karr, L. Hilico, and V.I. Korobov, Phys. Rev. A 90, 062516 (2014).
Author
Dr
Jean-Philippe Karr
(Laboratoire Kastler Brossel (UPMC/CNRS/ENS/Collège de France))
Co-authors
Dr
Albane Douillet
(Laboratoire Kastler Brossel (UPMC/CNRS/ENS/Collège de France))
Mr
Johannes M. Heinrich
(Laboratoire Kastler Brossel (UPMC/CNRS/ENS/Collège de France))
Prof.
Laurent Hilico
(Laboratoire Kastler Brossel (UPMC/CNRS/ENS/Collège de France))
Mr
Nicolas Sillitoe
(Laboratoire Kastler Brossel (UPMC/CNRS/ENS/Collège de France))
Prof.
Vladimir I. Korobov
(Bogolyubov Laboratory of Theoretical Physics, JINR, Dubna)
