A Global Fit to Scattering Data with NLL BFKL Resummations
Abstract
Description
We perform a global parton fit to DIS and related data, including next-to-leading logarithmic (NLL) BFKL resummations in both the massless and massive sectors. The resummed fit improves over a standard next-to-leading order (NLO) DGLAP fit, with a positive definite gluon at the input scale as opposed to the negative gluon seen at NLO. Furthermore, the predicted longitudinal structure function is free of perturbative instability at small x, and the reduced cross-section shows a turnover at high y (absent in the NLO fit) consistent with the HERA data.
4 pages, 2 figures; Talk presented at the International Workshop on Deep-Inelastic Scattering and Related Subjects, Munich, Germany, April 16-20, 2007
4 pages, 2 figures; Talk presented at the International Workshop on Deep-Inelastic Scattering and Related Subjects, Munich, Germany, April 16-20, 2007