Speaker
Cedric Quint
(Max Planck Institute for Nuclear Physics)
Description
Axion-like particles and similar new pseudoscalar bosons coupled to nucleons and electrons are known to lead to spin-dependent forces in atoms and ions. We argue that hyperfine structure measurements in the hydrogen- and lithium-like charge states are a sensitive probe to this effect. Focusing on specific differences reduces uncertainties due to nuclear effects in hyperfine structure calculations and measurements. Using this, we show that existing measurements on Be provide competitive limits in the region mϕ ≳ 100 keV. We also find that future measurements on Cs and In have discovery potential.
Author
Cedric Quint
(Max Planck Institute for Nuclear Physics)
Co-authors
Christoph H. Keitel
(Max Planck Institute for Nuclear Physics)
Fabian Heiße
(Max Planck Institute for Nuclear Physics)
Joerg Jaeckel
(Institute for Theoretical Physics, Heidelberg University)
Lutz Leimenstoll
(Institute for Theoretical Physics, Heidelberg University)
Zoltán Harman
(Max Planck Institute for Nuclear Physics)
