Precision Measurement of the Lamb Shift in Muonium.

Authors :: Ohayon, B.
Janka, G.
Cortinovis, I.
Burkley, Z.
de Sousa Borges, L.
Depero, E.
Golovizin, A.
Ni, X.
Salman, Z.
Suter, A.
Vigo, C.
Prokscha, T.
Crivelli, P.
Source :: Physical Review Letters. 1/7/2022, Vol. 128 Issue 1, p1-1. 1p.
Publication Year :: 2022
Abstract: We report a new measurement of the n=2 Lamb shift in Muonium. Our result of 1047.2(2.3)stat(1.1)syst MHz comprises an order of magnitude improvement upon the previous best measurement. This value matches the theoretical calculation within 1 standard deviation allowing us to set limits on Lorentz and CPT violation in the muonic sector, as well as on new physics coupled to muons and electrons which could provide an explanation of the muon g-2 anomaly. [ABSTRACT FROM AUTHOR]