Implications of Scaling Violations of F2 at HERA for Perturbative QCD

Details Implications of Scaling Violations of F2 at HERA for Perturbative QCD Implications of Scaling Violations of F2 at HERA for Perturbative QCD

1993-11-30

arxiv.org/abs/hep-ph/9311376v1

Phys.Lett.B325:212-218,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

(8 Latex Pages) IFJ 1653/PH

Scientific paper

10.1016/0370-2693(94)90094-9

We critically examine the QCD predictions for the $Q^2$ dependence of the electron-proton deep-inelastic structure function $F_2(x,Q^2)$ in the small $x$ region, which is being probed at HERA. The standard results based on next-to-leading order Altarelli-Parisi evolution are compared with those that follow from the BFKL equation, which corresponds to the resummation of the leading log$(1/x)$ terms. The effects of parton screening are also quantified. The theoretical predictions are confronted with each other, and with existing data from HERA. (3 Postscript figures included).

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