Update of Muonium 1S-2S transition frequency

We present an updated value of the Muonium 1S-2S transition frequency, highlighting contributions from different QED corrections as well as the large uncertainty in the Dirac contribution, stemming from the uncertainty of the electron-to-muon mass ratio. Improving the measurement of this spectral li...

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Bibliographic Details
Published in:arXiv.org 2023-03
Main Authors: Cortinovis, Irene, Ohayon, Ben, de Sousa Borges, Lucas, Janka, Gianluca, Golovizin, Artem, Zhadnov, Nikita, Crivelli, Paolo
Format: Article
Language:English
Subjects:
Line spectra
Muonium
Muons
Uncertainty
Online Access:Get full text
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Summary:We present an updated value of the Muonium 1S-2S transition frequency, highlighting contributions from different QED corrections as well as the large uncertainty in the Dirac contribution, stemming from the uncertainty of the electron-to-muon mass ratio. Improving the measurement of this spectral line would allow to extract a more accurate determination of fundamental constants, such as the electron-to-muon mass ratio or, combined with the Muonium hyperfine splitting, an independent value of the Rydberg constant. Furthermore we report on the current status of the Mu-MASS experiment, which aims at measuring the Muonium 1S-2S transition frequency at a 10 kHz uncertainty level.
ISSN:2331-8422
DOI:10.48550/arxiv.2301.12883