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

Abstract

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.

12 pages, 4 figures

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• Diffractive Higgs Production by AdS Pomeron Fusion
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• Unintegrated gluon distributions for forward jets at LHC
• On the Multi-Component Pomeron in high energy hadronic interactions
• Structure Functions and Low-x -- Working Group Summary