Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-07-02
Physics
High Energy Physics
High Energy Physics - Phenomenology
7 pages, 8 figures, proceedings of 17th International Workshop on Deep Inelastic Scattering (DIS 2009), Madrid, 26-30 Apr 2009
Scientific paper
We report on recent progress towards quantitative phenomenology of small x resummation of deep-inelastic structure functions. We compute small x resummed K-factors with realistic PDFs and estimate their impact in the HERA kinematical region. These K-factors, which match smoothly to the fixed order NLO results, approximately reproduce the effect of a small x resummed PDF analysis. Typical corrections are found to be of the same order as the NNLO ones, that is, a few percent, but with opposite sign. These results imply that resummation corrections could be relevant for a global PDF analysis, especially with the very precise combined HERA dataset.
Altarelli Guido
Ball Richard D.
Forte Stefano
Rojo Juan
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