FIZIKA B 13 (2004)  2, 531-536

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MEASUREMENT OF THE NEUTRON'S ELECTRIC FORM FACTOR GEn VIA DOUBLY POLARIZED, QUASI-ELASTIC SCATTERING AT JEFFERSON LAB

FRANK R. WESSELMANN
University of Virginia, Charlottesville, Virginia 22904, USA
for the E93-026 Collaboration

Received 6 November 2003;   Accepted 24 May 2004
Online 22 November 2004

We determined the electric form factor of the neutron GEn via the reaction d(e,en)p using a longitudinally polarized electron beam and a frozen, polarized 15ND3 target at Jefferson Lab. The knocked out neutrons were detected in a segmented plastic scintillator in coincidence with the quasi-elastically scattered electrons which were tracked in Hall C's High Momentum Spectrometer. To extract GEn, we compared the experimental beam-target asymmetry with theoretical calculations based on different GEn models. We report the results of the fall 2001 run at Q2=0.5 and 1.0 (GeV/c)2.

PACS numbers: 13.40.Gp, 14.20.Dh
UDC 539.12

Keywords: neutron, electric form factor, polarized electron beam, polarized 15ND3 target, neutron - electron coincidences

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