The Lamb shift in muonic hydrogenThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May

The Lamb shift in muonic hydrogenThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May – 4 June, 2010.

Published:2011-01 Issue:1 Volume:89 Page:37-45
ISSN:0008-4204
Container-title:Canadian Journal of Physics
language:en
Short-container-title:Can. J. Phys.

Author:

Pohl Randolf¹²³⁴⁵,Antognini Aldo¹²³⁴⁵,Nez François¹²³⁴⁵,Amaro Fernando D.¹²³⁴⁵,Biraben François¹²³⁴⁵,Cardoso João M.R.¹²³⁴⁵,Covita Daniel S.¹²³⁴⁵,Dax Andreas¹²³⁴⁵,Dhawan Satish¹²³⁴⁵,Fernandes Luis M.P.¹²³⁴⁵,Giesen Adolf¹²³⁴⁵,Graf Thomas¹²³⁴⁵,Hänsch Theodor W.¹²³⁴⁵,Indelicato Paul¹²³⁴⁵,Julien Lucile¹²³⁴⁵,Kao Cheng-Yang¹²³⁴⁵,Knowles Paul¹²³⁴⁵,Le Bigot Eric-Olivier¹²³⁴⁵,Liu Yi-Wei¹²³⁴⁵,Lopes José A.M.¹²³⁴⁵,Ludhova Livia¹²³⁴⁵,Monteiro Cristina M.B.¹²³⁴⁵,Mulhauser Françoise¹²³⁴⁵,Nebel Tobias¹²³⁴⁵,Rabinowitz Paul¹²³⁴⁵,dos Santos Joaquim M.F.¹²³⁴⁵,Schaller Lukas A.¹²³⁴⁵,Schuhmann Karsten¹²³⁴⁵,Schwob Catherine¹²³⁴⁵,Taqqu David¹²³⁴⁵,Veloso João F.C.A.¹²³⁴⁵,Kottmann Franz¹²³⁴⁵

Affiliation:

1. Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany.

2. Laboratoire Kastler Brossel, École Normale Supérieure, CNRS and Université P. et M. Curie, 75252 Paris, CEDEX 05, France.

3. Departamento de Física, Universidade de Coimbra, 3004-516 Coimbra, Portugal.

4. I3N, Departamento de Física, Universidade de Aveiro, 3810-193 Aveiro, Portugal.

5. Physics Department, Yale University, New Haven, CT 06520-8121, USA.

Abstract

The long quest for a measurement of the Lamb shift in muonic hydrogen is over. Last year we measured the 2S 1/2F=1 –2P 3/2F=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.

Publisher

Canadian Science Publishing

Subject

General Physics and Astronomy

Link

http://www.nrcresearchpress.com/doi/pdf/10.1139/P10-109

Reference63 articles.

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