On the analytical approximation to the GLAP evolution at small x and moderate Q^2

Details On the analytical approximation to the GLAP evolution at small x and moderate Q^2 On the analytical approximation to the GLAP evolution at small x and moderate Q^2

1996-12-09

arxiv.org/abs/hep-ph/9612297v2

Phys.Lett. B393 (1997) 175-180

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 13 pages including 6 figures, figure 5 replaced, to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(96)01615-2

Comparing the numerically evaluated solution to the leading order GLAP equations with its analytical small-x approximation we have found that in the domain covered by a large fraction of the HERA data the analytic approximation has to be augmented by the formally non-leading term which has been usually neglected. The corrected formula fits the data much better and provides a natural explanation of some of the deviations from the $\sigma$ scaling observed in the HERA kinematical range.

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