A polarized target measurement of the electric form factor of the neutron at JLab

Abstract

The experiment E93-026 at the Thomas Jefferson National Accelerator Facility (JLab) determined the electric form factor of the neutron G n E through quasielastic d( e, e n)p scattering using a longitudinally polarized electron beam and a frozen polarized 15 N D3 target. The knocked out neutrons were detected in a segmented plastic scintillator detector in coincidence with the scattered electrons. The G n E was extracted by comparing the experimental beam-target asymmetry with full theoretical calculations based on different values of G n E . Preliminary results of the Fall 2001 run are reported.