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Asymptotics and preasymptotics at small x

G. P. Salam
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Abstract

This talk discusses the relative impact of running-coupling and other higher-order corrections on the small-x gluon-gluon splitting function. Comments are made on similarities with some aspects of the Balitsky-Kovchegov equation, which arise because of the presence of an effective infrared cutoff in both cases. It is emphasised that, at least in the splitting-function case, the asymptotic small-x behaviour has little relevance to the phenomenologically interesting preasymptotic region. This is illustrated with the aid of a convolution of the resummed splitting function with a toy gluon distribution.

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G. P. Salam. 2005-01-12. Asymptotics and preasymptotics at small x. https://arxiv.org/abs/hep-ph/0501097

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