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The Lamb shift in muonic hydrogen

  • Pohl, Randolf Max-Planck-Institut für Quantenoptik, Garching, Germany.
  • Antognini, Aldo Max-Planck-Institut für Quantenoptik, Garching, Germany.
  • Nez, François Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
  • Amaro, Fernando D. Departamento de Física, Universidade de Coimbra, Portugal.
  • Biraben, François Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, Paris, France.
  • Cardoso, João M. R. Departamento de Física, Universidade de Coimbra, Portugal.
  • Covita, Daniel S. Departamento de Física, Universidade de Aveiro, Portugal.
  • Dax, Andreas Physics Department, Yale University, New Haven, USA.
  • Dhawan, Satish Physics Department, Yale University, New Haven, USA.
  • Fernandes, Luis M. P. Departamento de Física, Universidade de Coimbra, Portugal.
  • Giesen, Adolf Dausinger & Giesen GmbH, Stuttgart, Germany.
  • Graf, Thomas Institut für Strahlwerkzeuge, 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 Physics Department, National Tsing Hua University, Taiwan.
  • Knowles, Paul E. Département de Physique, 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 Physics Department, National Tsing Hua University, Taiwan.
  • Lopes, José A. M. Departamento de Física, Universidade de Coimbra, Portugal.
  • Ludhova, Livia Département de Physique, Université de Fribourg, Switzerland.
  • Monteiro, Cristina M. B. Departamento de Física, Universidade de Coimbra, Portugal.
  • Mulhauser, Françoise Département de Physique, Université de Fribourg, Switzerland.
  • Nebel, Tobias Max-Planck-Institut für Quantenoptik, Garching, Germany.
  • Rabinowitz, Paul Department of Chemistry, Princeton University, USA.
  • Santos, Joaquim M. F. Dos Departamento de Física, Universidade de Coimbra, Portugal.
  • Schaller, Lukas A. Département de Physique, 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 Institut, Villigen-PSI, Switzerland.
  • Veloso, João F. C. A. Departamento de Física, Universidade de Aveiro, Portugal.
  • Kottmann, Franz Institut für Teilchenphysik, ETH Zürich, Switzerland.
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    19.01.2011
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.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
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Persistent URL
https://folia.unifr.ch/unifr/documents/301824
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