Latest Results on g1 and g2 at high x
Conference
·
OSTI ID:842292
Recent progress from Jefferson Lab has significantly improved our understanding of the nucleon spin structure in the high-x region. Results of a precision measurement of the neutron spin asymmetry, A{sub 1}{sup n}, in the high-x (valence quark) region are discussed. The up and down quark spin distributions in the nucleon were extracted. A{sub 2}{sup n} was also measured in the same experiment. The results were used, in combination with existing data, to extract the second moment of the spin structure function d{sub 2}{sup n}. Preliminary results on A{sub 1}{sup p} and A{sub 1}{sup d} in the high-x region have also become available. Finally, the results of a precision measurement of the g{sub 2} structure function to study higher twist effects will be presented.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA
- Sponsoring Organization:
- USDOE Office of Energy Research (ER)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 842292
- Report Number(s):
- JLAB-PHY-05-380; DOE/ER/40150-3547
- Country of Publication:
- United States
- Language:
- English
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