QCD Analysis of Polarized Scattering Data and New Polarized Parton Distributions

In this talk results from a new QCD analysis in leading (LO) and next--to--leading (NLO) order are presented. New parametrizations of the polarized quark and gluon densities are derived together with parametrizations of their fully correlated 1$\sigma$ error bands. Furthermore the value of $\alpha_s(M_Z^2)$ is determined. Finally a number of low moments of the polarized parton densities are compared with results from lattice simulations.