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2013•Annalen der PhysikRequires access

Laser spectroscopy of muonic hydrogen

Randolf Pohl, Aldo Antognini, F. D. Amaro, F. Biraben, J. M. R. Cardoso, D. S. Covita, A. Dax, S. Dhawan, Marc Diepold, L. M. P. Fernandes, Adolf Giesen, Andrea L. Gouvea, Thomas G. Graf, T. W. Hänsch, P. Indelicato, Lucile Julien, Cheng-Yang Kao, Paul Knowles, José A. M. Lopes, Éric-Olivier Le Bigot, Yiwei Liu, L. Ludhová, C. M. B. Monteiro, F. Mulhauser, Tobias Nebel, F. Nez, Paul Rabinowitz, Joaquim M. F. dos Santos, L. A. Schaller, Karsten Schuhmann, Catherine Schwob, D. Taqqu, João F. C. A. Veloso, Jan Vogelsang, F. Kottmann

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Abstract

Muonic hydrogen (μp) is a very sensitive probe of the proton structure. Laser spectroscopy of two 2S‐2P transitions in μp was used to determine both the Lamb shift and the hyperfine splitting of the 2S state in μp. The rms charge radius of the proton, fm, was extracted from the Lamb shift. The Zemach radius of the proton, fm, was obtained from the 2S‐hyperfine splitting. This article summarizes the previously published findings.

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What this paper is about

Muonic hydrogen (μp) is a very sensitive probe of the proton structure. Laser spectroscopy of two 2S‐2P transitions in μp was used to determine both the Lamb shift and the hyperfine splitting of the 2S state in μp. The rms charge radius of the proton, fm, was extracted from the Lamb shift. The Zemach radius of the proton, fm, was obtained from the 2S‐hyperfine splitting. This article summarizes the previously published findings.

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Available abstract

Muonic hydrogen (μp) is a very sensitive probe of the proton structure. Laser spectroscopy of two 2S‐2P transitions in μp was used to determine both the Lamb shift and the hyperfine splitting of the 2S state in μp. The rms charge radius of the proton, fm, was extracted from the Lamb shift. The Zemach radius of the proton, fm, was obtained from the 2S‐hyperfine splitting. This article summarizes the previously published findings.

Key concepts: Charge radius, Hyperfine structure, Lamb shift, Exotic atom, Spectroscopy, Atomic physics, Proton, RADIUS

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