skip to main content

Title: Lamb shift in muonic deuterium

We consider the two-photon exchange contribution to the 2P-2S Lamb shift in muonic deuterium in the framework of forward dispersion relations. The dispersion integrals are evaluated with minimal model dependence using experimental data on elastic deuteron form factors and inelastic electron-deuteron scattering, both in the quasielastic and hadronic range. The subtraction constant that is required to ensure convergence of the dispersion relation for the forward Compton amplitude T{sub 1} (ν,Q{sup 2}) is related to the deuteron magnetic polarizability β(Q{sup 2}) and represents the main source of uncertainty in our analysis. We obtain for the Lamb shift ΔE{sub 2P-2S} = 1.620±0.190 meV and discuss ways to further reduce this uncertainty.
Authors:
;  [1] ;  [2]
  1. Institut für Kernphysik, Universität Mainz, 55128 Mainz (Germany)
  2. Department of Physics, College of William and Mary, Williamsburg, Virginia 23187 (United States)
Publication Date:
OSTI Identifier:
22280673
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1563; Journal Issue: 1; Conference: Workshop to explore physics opportunities with intense, polarized electron beams at 50-300 MeV, Cambridge, MA (United States), 14-16 Mar 2013; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; DEUTERIUM; DEUTERONS; DISPERSION RELATIONS; ELECTRONIC STRUCTURE; ELECTRONS; FORM FACTORS; INTEGRALS; LAMB SHIFT; MUONIC ATOMS; P STATES; PHOTONS; POLARIZABILITY; S STATES; SCATTERING