A High Precision Measurement of the Neutron Electric Form Factor, G{sub E}{sup n} at High Q2

Journal Article · Wed Jun 13 04:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2750888· OSTI ID:21064025

Kelleher, A M ^[1]

---

1. Department of Physics, College of William and Mary, P.O. Box 8795, Williamsburg, Virginia 23187 (United States)

In the spring of 2006, Jefferson Lab experiment 02-013 successfully collected data to measure the neutron elastic form factor G{sub E}{sup n} at the four-momentum transfer values Q2 = 1.2, 1.8, 2.6, and 3.5(GeV/c)2. This measurement of the quasi-elastic semi-exclusive 3He-vectore(e-vector,e'n) reaction used the polarized CEBAF beam (Pb {approx_equal} 85%) and a highly polarized 3He target (Pt {approx_equal} 50%). Neutrons were detected in a large array of scintillators with an efficiency of 35-40%. The electrons were detected by the newly commissioned BigBite spectrometer with a solid angle of 76msr and a momentum resolution of 1%. From the transverse asymmetry of the cross section, G{sub E}{sup n} will be extracted. A statistical accuracy of {delta}G{sub E}{sup n}/G{sub E}{sup n} {approx_equal} 0.14 is expected.

• OSTI ID: 21064025
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 915; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
CEBAF ACCELERATOR
CROSS SECTIONS
ELECTROMAGNETIC FORM FACTORS
ELECTRON BEAMS
ELECTRON DETECTION
ELECTRON REACTIONS
ELECTRONS
ELECTROPRODUCTION
FOUR MOMENTUM TRANSFER
GEV RANGE
HELIUM 3
HELIUM 3 TARGET
NEUTRON DETECTION
NEUTRONS
POLARIZED BEAMS
POLARIZED TARGETS
QUASI-ELASTIC SCATTERING
RESOLUTION