A Global Fit to Scattering Data with NLL BFKL Resummations

Details A Global Fit to Scattering Data with NLL BFKL Resummations A Global Fit to Scattering Data with NLL BFKL Resummations

2007-06-18

arxiv.org/abs/0706.2609v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures; Talk presented at the International Workshop on Deep-Inelastic Scattering and Related Subjects, Munich, Ge

Scientific paper

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.

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