Fig. 1: The elastic neutron form factor ratio.
From: Measurement of the neutron charge radius and the role of its constituents
a The neutron electric to magnetic form factor ratio \({G}_{{\rm{E}}}^{{\rm{n}}}/{G}_{{\rm{M}}}^{{\rm{n}}}\): world data7,8,9,10,11,12,13,14,15,16,17,18,19,20,21 (black open circles), ratios calculated from the N → Δ measurements24,25,26,27,28,29,30,31,32 through Eq. (1) for nb = 1 (filled-squares), and lattice Quantum Chromodynamics (LQCD) results (red open circles)33. b The \({G}_{{\rm{E}}}^{{\rm{n}}}/{G}_{{\rm{M}}}^{{\rm{n}}}\) results from the large-Nc analysis of the Coulomb quadrupole measurements (CMR, filled diamonds) and of the Electric quadrupole measurements (EMR, filled boxes) from the experiments24,25,26,27,28,29,30,31,32. The neutron world data (black open circles) and the LQCD results (red open circles)33 are the same as in panel (a). The error bars correspond to the total uncertainty, at the 1σ or 68% confidence level.
