학술논문
Laser Spectroscopy of Muonic Atoms and Ions
Document Type
Working Paper
Author
Pohl, Randolf; Nez, François; Fernandes, Luis M. P.; Ahmed, Marwan Abdou; Amaro, Fernando D.; Amaro, Pedro; Biraben, François; Cardoso, João M. R.; Covita, Daniel S.; Dax, Andreas; Dhawan, Satish; Diepold, Marc; Franke, Beatrice; Galtier, Sandrine; Giesen, Adolf; Gouvea, Andrea L.; Götzfried, Johannes; Graf, Thomas; Hänsch, Theodor W.; Hildebrandt, Malte; Indelicato, Paul; Julien, Lucile; Kirch, Klaus; Knecht, Andreas; Knowles, Paul; Kottmann, Franz; Krauth, Julian J.; Bigot, Eric-Olivier Le; Liu, Yi-Wei; Lopes, José A. M.; Ludhova, Livia; Machado, Jorge; Monteiro, Cristina M. B.; Mulhauser, Françoise; Nebel, Tobias; Rabinowitz, Paul; Santos, Joaquim M. F. dos; Santos, José Paulo; Schaller, Lukas A.; Schuhmann, Karsten; Schwob, Catherine; Szabo, Csilla I.; Taqqu, David; Veloso, João F. C. A.; Voss, Andreas; Weichelt, Birgit; Antognini, Aldo
Source
Subject
Language
Abstract
Laser spectroscopy of the Lamb shift (2S-2P energy difference) in light muonic atoms or ions, in which one negative muon $\mu^-$ is bound to a nucleus, has been performed. The measurements yield significantly improved values of the root-mean-square charge radii of the nuclei, owing to the large muon mass, which results in a vastly increased muon wave function overlap with the nucleus. The values of the proton and deuteron radii are 10 and 3 times more accurate than the respective CODATA values, but 7 standard deviations smaller. Data on muonic helium-3 and -4 ions is being analyzed and will give new insights. In future, the (magnetic) Zemach radii of the proton and the helium-3 nuclei will be determined from laser spectroscopy of the 1S hyperfine splittings, and the Lamb shifts of muonic Li, Be and B can be used to improve the respective charge radii.
Comment: Contribution to LEAP 2016 in Kanazawa, Japan
Comment: Contribution to LEAP 2016 in Kanazawa, Japan