Electric form factor of the neutron from the 2H(e-->,e'n-->)1H reaction at Q2=0.255 (GeV/c)2

Journal Article · Sat Oct 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics)

DOI:https://doi.org/10.1103/PhysRevC.50.R1749· OSTI ID:837942

Eden, T; Madey, R; Zhang, W -M; Anderson, B D; Arenhvel, H; Baldwin, A R; Barkhuff, D; Beard, K B; Bertozzi, W; Cameron, J M; Chang, C C; Dodson, G W; Dow, K; Farkhondeh, M; Finn, J M; Flanders, B S; Hyde-Wright, C; Jiang, W -D; Keane, D; Kelly, J J ; Korsch, W; Kowalski, S; Lourie, R; Manley, D M; Markowitz, P; Mougey, J; Ni, B; Payerle, T; Pella, P J; Reichelt, T; Rutt, P M; Spraker, M; Tieger, D; Turchinetz, W; Ulmer, P E; Verst, S Van; Watson, J W; Weinstein, L B; Whitney, and R. R.

We determined the electric form factor GnE of the neutron from the quasielastic 2H(e-->,e'n-->)1H reaction at a central squared four-momentum transfer Q2=0.255 (GeV/c)2 with a longitudinally polarized electron beam of 868 MeV and a low ({approx}0.8%) duty factor. A neutron polarimeter designed and constructed specifically for this experiment was used to measure the sideways polarization of the recoil neutron, which was detected in coincidence with the scattered electron. Theoretical calculations have established that this polarization-transfer technique for quasielastic scattering produces a value of GnE that shows little sensitivity to the influence of final-state interactions, meson-exchange currents, isobar configurations, and deuteron structure. The value for GnE from this measurement is 0.066 {+-} 0.036 {+-} 0.009.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 837942
• Report Number(s): CEBAF-PR-94-22; DOE/ER/40150-3220
• Journal Information: Physical Review, C (Nuclear Physics), Journal Name: Physical Review, C (Nuclear Physics) Journal Issue: 4 Vol. 50
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSON-EXCHANGE MODELS
DEUTERONS
ELECTRON BEAMS
FINAL-STATE INTERACTIONS
FORM FACTORS
NEUTRONS
POLARIMETERS
POLARIZATION
SCATTERING
SENSITIVITY