%0 Journal Article
%T The size of the proton - closing in on the radius puzzle
%A I. T. Lorenz
%A H. -W. Hammer
%A Ulf-G. MeiŁżner
%J Physics
%D 2012
%I arXiv
%R 10.1140/epja/i2012-12151-1
%X We analyze the recent electron-proton scattering data from Mainz using a dispersive framework that respects the constraints from analyticity and unitarity on the nucleon structure. We also perform a continued fraction analysis of these data. We find a small electric proton charge radius, r_E^p = 0.84_{-0.01}^{+0.01} fm, consistent with the recent determination from muonic hydrogen measurements and earlier dispersive analyses. We also extract the proton magnetic radius, r_M^p = 0.86_{-0.03}^{+0.02} fm, consistent with earlier determinations based on dispersion relations.
%U http://arxiv.org/abs/1205.6628v2