Higher Twist Analysis of the Proton g{sub 1} Structure Function
Journal Article
·
OSTI ID:824712
We perform a global analysis of all available spin-dependent proton structure function data, covering a large range of Q{sup 2}, 1 < Q{sup 2} < 30 GeV{sup 2}, and calculate the lowest moment of the g{sub 1} structure function as a function of Q{sup 2}. The moment at high Q{sup 2} is used to obtain a value of the singlet axial charge, consistent with all the proton data. From the Q{sup 2} dependence of the lowest moment we extract matrix elements of twist-4 operators, and determine the color electric and magnetic polarizabilities of the proton.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 824712
- Report Number(s):
- JLAB-PHY-04-221; DOE/ER/40150-2696; hep-ph/0404195; TRN: US0402172
- Resource Relation:
- Other Information: No journal information given for this preprint; PBD: 1 Apr 2004
- Country of Publication:
- United States
- Language:
- English
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