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The Mu-MASS (muonium laser spectroscopy) experiment

Crivelli, P.

Hyperfine interactions, 2018-12, Vol.239 (1), p.1-9, Article 49 [Peer Reviewed Journal]

Cham: Springer International Publishing

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Title:
The Mu-MASS (muonium laser spectroscopy) experiment
Author: Crivelli, P.
Subjects: 12-16 March 2018 ; Anomalies ; Atomic ; Condensed Matter Physics ; Converters ; Experiments ; France ; Hadrons ; Heavy Ions ; Hydrogen storage ; Magnetic moments ; Molecular ; Muonium ; Nuclear Physics ; Optical and Plasma Physics ; Physics ; Physics and Astronomy ; Positronium ; Proceedings of the 13th International Conference on Low Energy Antiproton Physics (LEAP 2018) Paris ; Size effects ; Spectroscopy ; Spectrum analysis ; Standard model (particle physics) ; State of the art ; Surfaces and Interfaces ; Thin Films ; Ultraviolet radiation
Is Part Of: Hyperfine interactions, 2018-12, Vol.239 (1), p.1-9, Article 49
Description: We present a new experiment, Mu-MASS, aiming for a 1000-fold improvement in the determination of the 1S-2S transition frequency of Muonium (M), the positive-muon/electron bound state. This substantial improvement beyond the current state-of-the-art relies on the novel cryogenic M converters and confinement techniques we developed, on the new excitation and detection schemes which we implemented for positronium spectroscopy and the tremendous advances in generation of UV radiation. This experiment is planned to be performed at the Paul Scherrer Institute (PSI). Interesting anomalies in the muon sector have accumulated: notably the famous anomalous muon magnetic moment (g-2) and the muonic hydrogen Lamb shift measurement which prompted the so-called proton charge radius puzzle. These tantalizing results triggered vibrant activity on both experimental and theoretical sides. Different explanations have been put forward including exciting solutions invoking New Physics beyond the Standard Model. Mu-MASS could contribute to clarifying the origin of these anomalies by providing robust and reliable values of fundamental constants such as the muon mass and a value of the Rydberg constant independent of finite size effects.
Publisher: Cham: Springer International Publishing
Language: English

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The Mu-MASS (muonium laser spectroscopy) experiment

Crivelli, P.

Cham: Springer International Publishing

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