Neutron Spin Structure Study at Jefferson Lab Hall A
With a high-intensity highly-polarized 6 GeV electron beam, and a high-density polarized {sup 3}He target, we have carried out a number of experiments to study the neutron spin structure at Hall A in Jefferson Lab. Taking advantage of the high luminosity of Jefferson Lab, we completed two inclusive deep-inelastic-scattering experiments this summer. In the first, precision measurements were made of the spin asymmetry A{sup n}{sub 1} in the valence quark (high Bjorken x) region; and in the second, higher-twist effects were studied via precision measurements of g{sup n}{sub 2}. Physics motivation and preliminary results from the first experiment will be presented and discussed. I will also present nearly final results from an earlier experiment, which measured the generalized GDH sum for the neutron in the Q{sup 2} range of 0.1 to 1 GeV{sup 2}. Planned near-term experiments will be briefly discussed.
- 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:
- 790067
- Report Number(s):
- JLAB-PHY-02-04; DOE/ER/40150-1980
- Country of Publication:
- United States
- Language:
- English
Similar Records
Precision exploration of neutron spin structure at Jefferson Lab
Spin Physics in Hall A of Jefferson Lab