Progress on double-logarithmic large-x and small-x resummations for (semi-)inclusive hard processes
Abstract
Over the past few years considerable progress has been made on the resummation of double-logarithmically enhanced threshold (large-x) and high-energy (small-x) higher-order contributions to the splitting functions for parton and fragmentation distributions and to the coefficient functions for inclusive deep-inelastic scattering and semi-inclusive e^+e^- annihilation. We present an overview of the methods which allow, in many cases, to derive the coefficients of the highest three logarithms at all orders in the strong coupling from next-to-next-to-leading order results in massless perturbative QCD. Some representative analytical and numerical results are shown, and the present limitations of these resummations are discussed.
Keywords
Cite
@article{arxiv.1212.2932,
title = {Progress on double-logarithmic large-x and small-x resummations for (semi-)inclusive hard processes},
author = {A. Vogt and C. H. Kom and N. A. Lo Presti and G. Soar and A. A. Almasy and S. Moch and J. A. M. Vermaseren and K. Yeats},
journal= {arXiv preprint arXiv:1212.2932},
year = {2012}
}
Comments
11 pages, LaTeX (PoS style), 2 eps-figures. To appear in the proceedings of `Loops & Legs 2012', Wernigerode (Germany), April 2012