The size of the proton and the deuteron
- Pohl, Randolf Max-Planck-Institut für Quantenoptik, Garching, Germany - Ludwig-Maximilians-Universität, Munich, Germany
- Amaro, Fernando D. Universidade de Coimbra, Portugal
- Antognini, Aldo Max-Planck-Institut für Quantenoptik, Garching, Germany - ETH Zürich, Switzerland
- Biraben, François Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France
- Cardoso, João M. R. Universidade de Coimbra, Portugal
- Covita, Daniel S. Universidade de Coimbra, Portugal - Universidade de Aveiro, Portugal
- Dax, Andreas Physics Department, Yale University, USA
- Dhawan, Satish Physics Department, Yale University, USA
- Fernandes, Luis M. P. Universidade de Coimbra, Portugal
- Giesen, Adolf IFSW, Universität Stuttgart, Germany - Dausinger & Giesen GmbH, Stuttgart, Germany
- Graf, Thomas IFSW, Universität Stuttgart, Germany
- Hänsch, Theodor W. Max-Planck-Institut für Quantenoptik, Garching, Germany - Ludwig-Maximilians-Universität, Munich, Germany
- Indelicato, Paul Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France
- Julien, Lucile Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France
- Kao, Cheng-Yang National Tsing Hua University, Taiwan
- Knowles, Paul E. Université de Fribourg, Switzerland
- Bigot, Eric-Olivier Le Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France
- Liu, Yi-Wei National Tsing Hua University, Taiwan
- Lopes, José A. M. Universidade de Coimbra, Portugal
- Ludhova, Livia Université de Fribourg, Switzerland
- Monteiro, Cristina M. B. Universidade de Coimbra, Portugal
- Mulhauser, Françoise Université de Fribourg, Switzerland
- Nebel, Tobias Max-Planck-Institut für Quantenoptik, Garching, Germany
- Nez, François Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France
- Rabinowitz, Paul Department of Chemistry, Princeton University, USA
- Santos, Joaquim M. F. dos Universidade de Coimbra, Portugal
- Schaller, Lukas A. Université de Fribourg, Switzerland
- Schuhmann, Karsten Dausinger & Giesen GmbH, Stuttgart, Germany
- Schwob, Catherine Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France
- Taqqu, David Paul Scherrer Institute, Switzerland
- Veloso, João F. C. A. Universidade de Aveiro, Portugal
- Kottmann, Franz ETH Zürich, Switzerland
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2011
Published in:
- Journal of Physics: Conference Series. - 2011, vol. 264, no. 1, p. 012008
English
We have recently measured the 2S1/2⁼¹ − 2P3/2 ⁼ ² energy splitting in the muonic hydrogen atom μp to be 49881.88 (76) GHz. Using recent QED calculations of the fine-, hyperfine, QED and finite size contributions we obtain a root-mean-square proton charge radius of rp = 0.84184 (67) fm. This value is ten times more precise, but 5 standard deviations smaller, than the 2006 CODATA value of rp = 0.8768 (69) fm. The source of this discrepancy is unknown. Using the precise measurements of the 1S-2S transition in regular hydrogen and deuterium and our value of rp we obtain improved values of the Rydberg constant, R∞ = 10973731.568160 (16) m⁻¹and the rms charge radius of the deuteron rd = 2.12809 (31) fm.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
-
- English
- Classification
- Physics
- License
- License undefined
- Identifiers
-
- RERO DOC 22094
- DOI 10.1088/1742-6596/264/1/012008
- Persistent URL
- https://folia.unifr.ch/unifr/documents/301781
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