Neutron (3He) Spin Structure Functions at Low Q^2

Conference · Wed Jul 01 04:00:00 EDT 2009 · AIP Conf.Proc.

DOI:https://doi.org/10.1063/1.3203306· OSTI ID:978839

Sulkosky, Vincent

Experiment E97-110 was performed at the Thomas Jefferson National Accelerator Facility to provide a precise measurement of the $$^{3}$$He spin structure functions at low $$Q^{2}$$ from 0.02 to 0.3~[GeV$/c$$]$$^{2}$$. A longitudinally-polarized electron beam was scattered from a longitudinally or transversely polarized $$^{3}$$He target. From these data, we have extracted moments of the neutron and $$^{3}$$He spin structure functions at very low momentum transfers. These data allow us to make a benchmark check of Chiral Perturbation Theory calculations in a region where they are expected to be valid. In these proceedings, the experimental details are discussed and preliminary results on the first moments of the $$g_1\left(x,Q^{2}\right)$$ and $$g_2\left(x,Q^{2}\right)$$ structure functions are presented.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 978839
• Report Number(s): JLAB-PHY-09-998; DOE/OR/23177-0741
• Conference Information: Journal Name: AIP Conf.Proc. Journal Volume: 1155
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BENCHMARKS
CEBAF ACCELERATOR
ELECTRON BEAMS
MOMENTUM TRANSFER
NEUTRONS
PERTURBATION THEORY
SPIN
STRUCTURE FUNCTIONS