QCD Analysis of the Polarized World Data
arXiv:1007.2784 · doi:10.1016/j.nuclphysb.2010.08.005
Abstract
The results of a recent next-to-leading order QCD analysis of the world data on polarized deep inelastic scattering are reported. New parameterizations are derived for the quark and gluon distributions and the value of $α_s(M_z^2)$ is determined. We obtain $α_s^{\rm NLO}(M_Z^2)= 0.1132~~\begin{array}{l} + 0.0056 \\ -0.0095 \end{array}$. Potential higher twist contributions to the structure function $g_1(x,Q^2)$ are considered.
6 pages, 2 Figures, DIS2010 Proceedings, PoS