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Charge form factor of the neutron at low momentum transfer from the 2H-->(e-->,e'n)1H reaction |
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| Authors: | Geis E Kohl M Ziskin V Akdogan T Arenhövel H Alarcon R Bertozzi W Booth E Botto T Calarco J Clasie B Crawford C B DeGrush A Donnelly T W Dow K Farkhondeh M Fatemi R Filoti O Franklin W Gao H Gilad S Hasell D Karpius P Kolster H Lee T Maschinot A Matthews J McIlhany K Meitanis N Milner R G Rapaport J Redwine R P Seely J Shinozaki A Sirca S Sindile A Six E Smith T Steadman M Tonguc B Tschalaer C Tsentalovich E Turchinetz W Xiao Y Xu W Zhang C Zhou Z Zwart T;BLAST Collaboration |
| Institution: | Arizona State University, Tempe, Arizona 85287, USA. |
| Abstract: | We report new measurements of the neutron charge form factor at low momentum transfer using quasielastic electrodisintegration of the deuteron. Longitudinally polarized electrons at an energy of 850 MeV were scattered from an isotopically pure, highly polarized deuterium gas target. The scattered electrons and coincident neutrons were measured by the Bates Large Acceptance Spectrometer Toroid (BLAST) detector. The neutron form factor ratio GEn/GMn was extracted from the beam-target vector asymmetry AedV at four-momentum transfers Q2=0.14, 0.20, 0.29, and 0.42 (GeV/c)2. |
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