Speaker
Michael Heiss
(ETH Zurich (CH))
Description
Positronium and Muonium are excellent systems to test bound-state QED theory to high precision. This has motivated numerous precise experiments aimed at measuring the hyperfine splitting and 1S-2S transition of these atoms.
Currently, there is some disagreement with the most recent bound-state QED calculations for the hyperfine splitting in positronium. Our approach to resolve this, PHySES, eliminates several possible sources of systematics present in earlier experiments by a novel experimental design.
Furthermore, measurements of the 1S-2S transition can test bound state QED in the ppb range and determine fundamental constants, e.g., the muon mass.
Here we present current efforts to reach this sensitivity.
Author
Michael Heiss
(ETH Zurich (CH))
Co-authors
Dr
Artem Golovizin
(Lebedev Physical Institute)
Zak Burkley
(ETH Zürich)
Paolo Crivelli
(ETH Zurich (CH))
