Measurements of the electric and magnetic form factors of the neutron from ${\mathit{Q}}^2$=1.75 to 4.00 (GeV/c${)}^2$

Quasielastic e-d cross sections have been measured at forward and backward angles. Rosenbluth separations were done to obtain ${\mathit{R}}_{\mathit{L}}$ and ${\mathit{R}}_{\mathit{T}}$ at ${\mathit{Q}}^2$=1.75, 2.50, 3.25, and 4.00 (GeV/c${)}^2$. The neutron form factors ${\mathit{G}}_{\mathit{E}\mathit{n}}$ and ${\mathit{G}}_{\mathit{M}\mathit{n}}$ have been extracted using a nonrelativistic model. The sensitivity to deuteron wave function, relativistic corrections, and models of the inelastic background are reported. The results for ${\mathit{G}}_{\mathit{M}\mathit{n}}$ are consistent with the dipole form, while ${\mathit{G}}_{\mathit{E}\mathit{n}}$ is consistent with zero. Comparisons are made to theoretical models based on vector meson dominance, perturbative QCD, and QCD sum rules, as well as constituent quarks.