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Communication Dans Un Congrès Proceedings of SPIE, the International Society for Optical Engineering Année : 2011

Muonic hydrogen spectroscopy: the proton radius puzzle

François Nez
Andreas Dax
  • Fonction : Auteur
Satish Dhawan
  • Fonction : Auteur
Paul Indelicato
Yi-Wei Liu
  • Fonction : Auteur
Catherine Schwob
  • Fonction : Auteur
  • PersonId : 857350
  • IdRef : 176303456

Résumé

By means of pulsed laser spectroscopy applied to muonic hydrogen (mu(-)p) we have measured the 2S(1/2)(F=1) - 2P(3/2)(F=2) transition frequency to be 49881.88(76) GHz.(1) By comparing this measurement with its theoretical prediction (2-7) based on bound-state QED we have determined a proton radius value of r(p) = 0.84184(67) fm. This new value differs by 5.0 standard deviations from the CODATA value of 0.8768(69) fm,(8) and 3 standard deviation from the e-p scattering results of 0.897(18) fm.(9) The observed discrepancy may arise from a computational mistake of the energy levels in mu p or H, or a fundamental problem in bound-state QED, an unknown effect related to the proton or the muon, or an experimental error.

Dates et versions

hal-00699011 , version 1 (18-05-2012)

Identifiants

Citer

Aldo Antognini, François Nez, Fernando D. Amaro, François Biraben, Joao M. R. Cardoso, et al.. Muonic hydrogen spectroscopy: the proton radius puzzle. International Conference on Coherent and Nonlinear Optics, Aug 2010, Kazan, Russia. pp.79931K, ⟨10.1117/12.881629⟩. ⟨hal-00699011⟩
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