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On factorisation at small x

Marcello Ciafaloni·Dimitri Colferai·Gavin P. Salam
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Abstract

We investigate factorisation at small x using a variety of analytical and numerical techniques. Previous results on factorisation in collinear models are generalised to the case of the full BFKL equation, and illustrated in the example of a collinear model which includes higher twist terms. Unlike the simplest collinear model, the BFKL equation leads to effective anomalous dimensions containing higher-twist pieces which grow as a (non-perturbative) power at small x. While these pieces dominate the effective splitting function at very small x they do not lead to a break-down of factorisation insofar as their effect on the predicted scaling violations remains strongly suppressed.

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Marcello Ciafaloni, Dimitri Colferai, Gavin P. Salam. 2000-09-28. On factorisation at small x. https://doi.org/10.1088/1126-6708%2F2000%2F07%2F054

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