The strong coupling constant at large distances [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 2009. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Additional Creators:
- Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- In this paper we discuss effective strong coupling constants. Those are well behaved in the low-$Q^2$ domain, contrarily to $\alpha_s$ from pQCD. We present an extraction of an effective strong coupling constant from Jefferson Lab polarized data at intermediate and low $Q^2$. We also show how these data, together with spin sum rules, allow us to obtain the effective coupling constant over the entire $Q^2$ range. We then discuss the relation between the experimentally extracted coupling constant and theoretical calculations at low $Q^2$. We conclude on the importance of such study for the application of the AdS/CFT correspondence to QCD.
- Published through SciTech Connect., 01/01/2009., "jlab-phy-09-935", " arxiv:0901.2190", " doe/or/23177-0598", Paper compiled for SPIN2008., and Deur, Alexandre.
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