Evidence for the Discrete Asymptotically-Free BFKL Pomeron from HERA Data

Details Evidence for the Discrete Asymptotically-Free BFKL Pomeron from HERA Data Evidence for the Discrete Asymptotically-Free BFKL Pomeron from HERA Data

2008-03-03

arxiv.org/abs/0803.0258v1

Phys.Lett.B668:51-56,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 4 figures

Scientific paper

10.1016/j.physletb.2008.08.007

We show that the next-to-leading-order renormalization-group-improved asymptotically-free BFKL Pomeron provides a good fit to HERA data on virtual photoproduction at small x and large Q^2. The leading discrete Pomeron pole reproduces qualitatively the Q^2 dependence of the HERA data for x ~10^{-3}, and a fit using the three leading discrete singularities reproduces quantitatively the Q^2 and x dependence of the HERA data for x < 10^{-2}. This fit fixes the phase for all the BFKL wavefunctions at a chosen infrared scale.

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