Conveners
Session 7
- Stephan Schiller (Institut für Experimentalphysik, Univ. Düsseldorf)
- Stephan Schiller (Heinrich-Heine-Universität Düsseldorf)
Session 7
- Stephan Schiller (Institut für Experimentalphysik, Univ. Düsseldorf)
- Stephan Schiller (Heinrich-Heine-Universität Düsseldorf)
I will present recent results of a search for a new force between the neutron and the electron. This search is performed using isotope-shift (IS) spectroscopy in calcium ions. IS spectroscopy of atoms and ions has been proposed as a method to search for a fifth fundamental force mediated by a hypothetical dark-matter-candidate boson in the intermediate mass range (100eV to 10MeV). The...
ALPHATRAP is a Penning trap experiment located at the Max-Planck-Institut für Kernphysik, Heidelberg with the goal to perform tests of quantum electrodynamics (QED) in strong fields by measuring the bound electron magnetic moment or g factor [1]. These tests are performed using highly charged ions, where the few remaining electrons experience the strong fields emanating from the nucleus....
In August 2023, the Fermilab Muon g-2 experiment collaboration published the Muon g-2 value with an unprecedented precision of 203 ppb, utilising data gathered from 2018 to 2020 (Runs 1-3). Since then, additional data has been gathered from 2021 to 2023 (Runs 4-6), double the Run 1-3 dataset. This talk will focus on the analysis conducted for the latest results, highlighting the systematic...
Transition energy measurements in heavy, few-electron atoms are a unique tool to test bound-state QED in extremely high Coulomb fields, where perturbative methods cannot be implemented. In such fields, the effects of the quantum vacuum fluctuations on the atomic energies are enhanced by several orders of magnitude with respect to light atoms. However, up to now, experiments have been unable to...
Relativistic and quantum electrodynamic corrections to the energy levels of quantum cyclotron states is are important for the determination of a number of fundamental constants, notably, for the g factor of the electron and positron, and atomic masses. We have recently analyzed the relativistic corrections in detail in [Phys. Rev.A vol. 106, 012816 (2022)] on the basis of higher-order...
