The Electric Form Factor of the Neutron at Q^2 = 1.47 (GeV/c)^2

Details The Electric Form Factor of the Neutron at Q^2 = 1.47 (GeV/c)^2 The Electric Form Factor of the Neutron at Q^2 = 1.47 (GeV/c)^2

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..aprx10009a&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The Jefferson Laboratory E93-038 collaboration measured the ratio of the electric form factor to the magnetic form factor of the neutron, G_E^n/G_M^n, via recoil polarimetry from the quasielastic d(e,e'n)p reaction at Q^2 = 0.45, 1.15, and 1.47 (GeV/c)^2 in Hall C of the Thomas Jefferson National Accelerator Facility. A polarimeter designed specifically for E93-038 [1] was used to measure the up-down scattering asymmetry from the transverse component of the recoil neutron's polarization vector, and a dipole magnet located in front of the polarimeter was used to precess the polarization vector in the scattering plane. Two different techniques were used at Q^2 = 1.47 (GeV/c)^2. First, measurements of the scattering asymmetry with the polarization vector precessed through \chi=0^circ or \chi=±90^circ were made during January and February 2001. Second, measurements of the scattering asymmetry with the polarization vector precessed through \chi=-40^circ or \chi=+40^circ were made during February and April 2001. Preliminary results for G_E^n at Q^2=1.47 (GeV/c)^2 for second technique will be presented. [1] R. Madey et al., A.I.P. Proceedings No. 339, 47-54 (1995).

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