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arXiv · hep-ph/0111427

Perturbative QCD and Regge theory: closing the circle

A Donnachie·P V Landshoff
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Abstract

We explain how Regge theory and perturbative evolution may be made compatible at small x. The result not only gives striking support to the two-pomeron description of small-x behaviour, but gives a rather clean test of perturbative QCD itself. When x is very small, or Q^2 is very large, the proton's gluon distribution function is significantly larger than is commonly believed. Perturbative evolution is invalid below Q^2\approx 5 GeV^2.

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A Donnachie, P V Landshoff. 2002-04-09. Perturbative QCD and Regge theory: closing the circle. https://doi.org/10.1016/s0370-2693(02)01556-3

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