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The Lamb shift in muonic hydrogen

Pohl, Randolf ; Antognini, Aldo ; Nez, François ; Amaro, Fernando D. ; Biraben, François ; Cardoso, João M.R. ; Covita, Daniel S. ; Dax, Andreas ; Dhawan, Satish ; Fernandes, Luis M.P. ; Giesen, Adolf ; Graf, Thomas ; Hänsch, Theodor W. ; Indelicato, Paul ; Julien, Lucile ; Kao, Cheng-Yang ; Knowles, Paul ; Bigot, Eric-Olivier Le ; Liu, Yi-Wei ; Lopes, José A.M. ; Ludhova, Livia ; Monteiro, Cristina M.B. ; Mulhauser, Françoise ; Nebel, Tobias ; Rabinowitz, Paul ; Santos, Joaquim M.F. dos ; Schaller, Lukas A. ; Schuhmann, Karsten ; Schwob, Catherine ; Taqqu, David ; Veloso, João F.C.A. ; Kottmann, Franz

In: Canadian Journal of Physics, 2011, vol. 89, p. 37-45

The long quest for a measurement of the Lamb shift in muonic hydrogen is over. Last year we measured the 2S1/2F=1–2P3/2F=2 energy splitting (Pohl et al., Nature, 466, 213 (2010)) in μp with an experimental accuracy of 15 ppm, twice better than our proposed goal. Using current QED calculations of the fine, hyperfine, QED, and finite...