Abstract
We report the first measurement using a solid polarized target of the neutron electric form factor GnE via d→(e→, e′n)p. GnE was determined from the beam-target asymmetry in the scattering of longitudinally polarized electrons from polarized deuterated ammonia (15ND3). The measurement was performed in Hall C at Thomas Jefferson National Accelerator Facility in quasifree kinematics with the target polarization perpendicular to the momentum transfer. The electrons were detected in a magnetic spectrometer in coincidence with neutrons in a large solid angle segmented detector. We find GnE = 0.04632 ±0.00616(stat)±0.00341(syst) at Q2 = 0.495 (GeV/c)2.
Original language | English |
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Pages (from-to) | 81801-1-81801-4 |
Journal | Physical Review Letters |
Volume | 87 |
Issue number | 8 |
DOIs | |
State | Published - 20 Aug 2001 |