The Running BFKL: Resolution of Caldwell's Puzzle

Abstract

The HERA data on the proton structure function, $F_2(x,Q^2)$, at very small $x$ and $Q^2$ show the dramatic departure of the logarithmic slope, $\partial F_2/\partial \log Q^2$, from theoretical predictions based on the DGLAP evolution. We show that the running BFKL approach provides the quantitative explanation for the observed $x$ and/or $Q^2$ -dependence of $\partial F_2/\partial \log Q^2$.

7 pages, Latex, 4 Figures, PS

References in corpus (3)

• Small x: Two Pomerons!
• The diffraction cone for exclusive vector meson production in deep inelastic scattering
• The BFKL-Regge Phenomenology of Deep Inelastic Scattering

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• Beauty, charm and $F_L$ at HERA: new data vs. early predictions
• Diffractive beauty photoproduction as a short distance probe of QCD pomeron