The Evolution of Unpolarized and Polarized Structure Functions at Small x
J. Blümlein, S. Riemersma, A. Vogt
Abstract
A survey is given of recent developments on the resummed small-x evolution, in a framework based on the renormalization group equation, of non--singlet and singlet structure functions in both unpolarized and polarized deep--inelastic scattering. The available resummed anomalous dimensions are discussed for all these cases, and the most important analytic and numerical results are compiled. The quantitative effects of these small-x resummations on the evolution of the various parton densities and structure functions are presented, and their present uncertainties are investigated. An application to QED radiative corrections is given.
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