Phys. Rev. Lett. 87, 081801 (2001) [4 pages]Measurement of the Electric Form Factor of the Neutron through d→(e→,e′n)p at Q2 = 0.5 (GeV/c)2 |
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Received 26 March 2001; published 3 August 2001
We report the first measurement using a solid polarized target of the neutron electric form factor GEn via d→(e→,e′n)p. GEn 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 GEn = 0.04632±0.00616(stat)±0.00341(syst) at Q2 = 0.495 (GeV/c)2.
©2001 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v87/e081801
DOI: 10.1103/PhysRevLett.87.081801
PACS: 13.40.Gp, 14.20.Dh
* Permanent address: Department of Physics, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa.
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