Large-Angle Quasielastic Electron-Deuteron Scattering

Abstract

Measurements of differential cross sections for quasielastic electron-deuteron scattering $e+d\ensuremath{\rightarrow}e+p+n$ have been made in which recoil protons were detected in coincidence with the scattered electrons. The ratios of the elastic electron-neutron to the electron-proton scattering cross sections are derived from the proton coincidence data. For comparison, these ratios are also determined from the scattered-electron momentum spectra using the peak and area methods. The theory developed by Renard, Tran Thanh Van, and LeBellac, which includes corrections for the final-state interactions, is found to explain the proton coincidence results. The present measurements, made at an electron scattering angle of 90\ifmmode^\circ\else\textdegree\fi{} for four-momentum transfers of ${q}^{2}=7, 10, 15, \mathrm{and} 29$ ${\mathrm{F}}^{\ensuremath{-}2}$, and at 80\ifmmode^\circ\else\textdegree\fi{} for ${q}^{2}=45$ ${\mathrm{F}}^{\ensuremath{-}2}$, are combined with previous results to obtain the electromagnetic form factors of the neutron.