Randolf Pohl, Aldo Antognini, Fernando D. Amaro, François Biraben, João M. R. Cardoso, Daniel S. Covita, Andreas Dax, Satish Dhawan, Marc Diepold, Luis M. P. Fernandes, Adolf Giesen, Andrea L. Gouvea, Thomas Graf, Theodor W. Hänsch, Paul Indelicato, Lucile Julien, Cheng-Yang Kao, Paul Knowles, José A. M. Lopes, Eric-Olivier Le Bigot, Yi-Wei Liu, Livia Ludhova, Cristina M. B. Monteiro, Françoise Mulhauser, Tobias Nebel, François Nez, Paul Rabinowitz, Joaquim M. F. dos Santos, Lukas A. Schaller, Karsten Schuhmann, Catherine Schwob, David Taqqu, João F. C. A. Veloso, Jan Vogelsang and Franz Kottmann Laser spectroscopy of muonic hydrogen Annalen der Physik 525
Article first published online: 30 MAY 2013 | DOI: 10.1002/andp.201300058
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, Rch = 0.84087(39) fm, was extracted from the Lamb shift. The Zemach radius of the proton, RZ = 1.082(37) fm, was obtained from the 2S-hyperfine splitting. This article summarizes the previously published findings.
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