The Lamb shift in muonic hydrogen
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Pohl, Randolf
Max-Planck-Institut für Quantenoptik, Garching, Germany.
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Antognini, Aldo
Max-Planck-Institut für Quantenoptik, Garching, Germany.
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Nez, François
Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
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Amaro, Fernando D.
Departamento de Física, Universidade de Coimbra, Portugal.
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Biraben, François
Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
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Cardoso, João M. R.
Departamento de Física, Universidade de Coimbra, Portugal.
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Covita, Daniel S.
Departamento de Física, Universidade de Aveiro, Portugal.
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Dax, Andreas
Physics Department, Yale University, New Haven, USA.
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Dhawan, Satish
Physics Department, Yale University, New Haven, USA.
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Fernandes, Luis M. P.
Departamento de Física, Universidade de Coimbra, Portugal.
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Giesen, Adolf
Dausinger & Giesen GmbH, Stuttgart, Germany.
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Graf, Thomas
Institut für Strahlwerkzeuge, Universität Stuttgart, Germany
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Hänsch, Theodor W.
Max-Planck-Institut für Quantenoptik, Garching, Germany. - Ludwig-Maximilians-Universität, Munich, Germany.
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Indelicato, Paul
Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
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Julien, Lucile
Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
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Kao, Cheng-Yang
Physics Department, National Tsing Hua University, Taiwan.
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Knowles, Paul E.
Département de Physique, Université de Fribourg, Switzerland.
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Bigot, Eric-Olivier Le
Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
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Liu, Yi-Wei
Physics Department, National Tsing Hua University, Taiwan.
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Lopes, José A. M.
Departamento de Física, Universidade de Coimbra, Portugal.
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Ludhova, Livia
Département de Physique, Université de Fribourg, Switzerland.
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Monteiro, Cristina M. B.
Departamento de Física, Universidade de Coimbra, Portugal.
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Mulhauser, Françoise
Département de Physique, Université de Fribourg, Switzerland.
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Nebel, Tobias
Max-Planck-Institut für Quantenoptik, Garching, Germany.
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Rabinowitz, Paul
Department of Chemistry, Princeton University, USA.
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Santos, Joaquim M. F. Dos
Departamento de Física, Universidade de Coimbra, Portugal.
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Schaller, Lukas A.
Département de Physique, Université de Fribourg, Switzerland.
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Schuhmann, Karsten
Dausinger & Giesen GmbH, Stuttgart, Germany.
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Schwob, Catherine
Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
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Taqqu, David
Paul Scherrer Institut, Villigen-PSI, Switzerland.
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Veloso, João F. C. A.
Departamento de Física, Universidade de Aveiro, Portugal.
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Kottmann, Franz
Institut für Teilchenphysik, ETH Zürich, Switzerland.
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Published in:
- Canadian Journal of Physics. - 2011, vol. 89, p. 37-45
English
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 size contributions, we obtain a root-mean-square proton charge radius of rp = 0.841 84 (67) fm. This value is 10 times more precise, but 5 standard deviations smaller, than the 2006 CODATA value of rp. The origin of this discrepancy is not known. Our measurement, together with precise measurements of the 1S–2S transition in regular hydrogen and deuterium, gives improved values of the Rydberg constant, R∞ = 10 973 731.568 160 (16) m⁻¹ and the rms charge radius of the deuteron rd = 2.128 09 (31) fm.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Physique
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Language
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Classification
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Physics
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/301824
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