Asymptotics and preasymptotics at small x
High Energy Physics - Phenomenology
2007-05-23 v1
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.
Keywords
Cite
@article{arxiv.hep-ph/0501097,
title = {Asymptotics and preasymptotics at small x},
author = {G. P. Salam},
journal= {arXiv preprint arXiv:hep-ph/0501097},
year = {2007}
}
Comments
7 pages. Talk presented at the QCD at cosmic energies workshop, Ettore Majorana Centre, Erice, Italy, September 2004