Update of Muonium 1S–2S transition frequency

We present an updated value of the Muonium 1 S –2 S 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...

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Bibliographic Details
Published in:The European physical journal. D, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2023, Vol.77 (4), p.66-66, Article 66
Main Authors: Cortinovis, Irene, Ohayon, Ben, de Sousa Borges, Lucas, Janka, Gianluca, Golovizin, Artem, Zhadnov, Nikita, Crivelli, Paolo
Format: Article
Language:English
Subjects:
Applications of Nonlinear Dynamics and Chaos Theory
Atomic
Line spectra
Molecular
Muonium
Muons
Optical and Plasma Physics
Physical Chemistry
Physics
Physics and Astronomy
Precision Physics of Simple Atomic Systems
Quantum Information Technology
Quantum Physics
Regular Article – Atomic Physics
Regular – Atomic Physics
Spectroscopy/Spectrometry
Spintronics
Uncertainty
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Summary:We present an updated value of the Muonium 1 S –2 S 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 1 S –2 S transition frequency at a 10 kHz uncertainty level. Graphic abstract
ISSN:1434-6060
1434-6079
DOI:10.1140/epjd/s10053-023-00639-z