Abstract
The muonic hydrogen atom in the 2s state provides the possibility of achieving high precision laser spectroscopy experiments from which a high precision value of the proton radius can be deduced. This will ultimately allow an increased precision in the test of QED in bound systems. Important progress has been made in recent years in the ability to stop muons in a low pressure gas target and in the understanding of the 2s-metastability in muonic hydrogen. As a consequence the 2s–2p laser spectroscopy experiment is now feasible and we present here the basic experimental concept considered by our collaboration.
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Taqqu, D., Biraben, F., Conde, C. et al. Laser spectroscopy of the Lamb shift in muonic hydrogen. Hyperfine Interactions 119, 311–315 (1999). https://doi.org/10.1023/A:1012676517972
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DOI: https://doi.org/10.1023/A:1012676517972