Ellis, J., Kowalski, H. and Ross, D.A.
Evidence for the discrete asymptotically-free BFKL Pomeron from HERA data.
Physics Letters B, 668, (1), . (doi:10.1016/j.physletb.2008.08.007).
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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 Q2. The leading discrete Pomeron pole reproduces qualitatively the Q2 dependence of the HERA data for x10?3, and a fit using the three leading discrete singularities reproduces quantitatively the Q2 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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