2–7 Jul 2023
Congressi Stefano Franscini (CSF), Ascona (Ticino), Switzerland
Europe/Zurich timezone

Searching for ultralight scalar dark matter with muonium and muonic atoms

7 Jul 2023, 11:50
35m
Congressi Stefano Franscini (CSF), Ascona (Ticino), Switzerland

Congressi Stefano Franscini (CSF), Ascona (Ticino), Switzerland

Monte Verità Strada Collina 84 CH-​6612 Ascona (Ticino)

Speaker

Dr Yevgeny Stadnik (The University of Sydney)

Description

Ultralight scalar dark matter may induce apparent oscillations of the fundamental constants of nature and particle masses, including the muon mass. Oscillations in the muon mass may be directly probed via temporal shifts in the spectra of muonium and muonic atoms. Existing datasets and ongoing spectroscopy measurements with muonium are capable of probing scalar-muon interactions that are up to 8 orders of magnitude feebler than astrophysical bounds. Ongoing free-fall experiments with muonium can probe forces associated with the exchange of virtual ultralight scalar bosons between muons and standard-model particles, offering up to 5 orders of magnitude improvement in sensitivity over complementary laboratory and astrophysical bounds.

References:
Yevgeny V. Stadnik, arXiv:2206.10808.
Y. V. Stadnik and V. V. Flambaum, PRL 114, 161301 (2014); PRL 115, 201301 (2015).

Author

Dr Yevgeny Stadnik (The University of Sydney)

Presentation materials