3 papers
hep-ph2026
Testing New Scalar Interactions in Few-Electron Highly Charged Ions
M. Moretti, C. de Jonge, J. Jaeckel +2
We investigate how a hypothetical scalar boson mediating an interaction between electrons as well as between electrons and nucleons would affect the g factor of lithium-like highly…
hep-ph2025
Stringent Constraints on New Pseudoscalar & Vector Bosons from Precision Hyperfine Splitting Measurements
Cedric de Jonge, Fabian Heiße, Joerg Jaeckel +3
Axion-like particles and similar new pseudoscalar as well as vector bosons coupled to nucleons and electrons are predicted to lead to spin-dependent forces in atoms and ions. We ar…
hep-ph2025
Limits on New Lorentz-violating Bosons
P. Carenza, J. Jaeckel, G. Lucente +3
We obtain novel constraints on new scalar fields interacting with Standard Model fermions through Lorentz-violating couplings, bridging searches for scalar particles and Lorentz-sy…