Brief review of the theory of the muonic hydrogen Lamb shift and the proton radius

Abstract

Recently the muonic hydrogen lamb shift has been measured with unprecedented accuracy, allowing for a precise determination of the proton radius. This determination is 5 sigma away from the previous CODATA value obtained from (mainly) the hydrogen lamb shift and the electron-proton scattering. Within an effective field theory formalism, I will define the proton radius and briefly review some aspects of the theoretical prediction for the muonic hydrogen lamb shift, studying both the pure QED-like computation and the hadronic effects.

12 pages, 6 figures. Plenary talk at XIV International Conference on Hadron Spectroscopy (hadron2011), 13-17 June 2011, Munich, Germany

References in corpus (3)

• Forward virtual Compton scattering and the Lamb shift in chiral perturbation theory
• QED is not endangered by the proton's size
• Comment on "Sixth-Order Vacuum-Polarization Contribution to the Lamb Shift of Muonic Hydrogen" by T. Kinoshita and M. Nio, Phys. Rev. Lett. 82, 3240 (1999)

Cited by in corpus (2)

• Model independent extraction of the proton magnetic radius from electron scattering
• The muonic hydrogen Lamb shift and the proton radius