Evidence for the Discrete Asymptotically-Free BFKL Pomeron from HERA Data
High Energy Physics - Phenomenology
2008-11-26 v1
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.
Cite
@article{arxiv.0803.0258,
title = {Evidence for the Discrete Asymptotically-Free BFKL Pomeron from HERA Data},
author = {J. Ellis and H. Kowalski and D. A. Ross},
journal= {arXiv preprint arXiv:0803.0258},
year = {2008}
}
Comments
12 pages, 4 figures