---
abstract: 'This talk reviews some recent results on the NLL resummed small-$x$ gluon splitting function, as determined including renormalisation-group improvements. It also discusses the observation that the LO, NLO, NNLO, etc. hierarchy for the gluon splitting function breaks down not when ${\alpha_s}\ln 1/x \sim 1$ but rather for ${\alpha_s}\ln^2 1/x \sim 1$.'
author:
- |
    Gavin P. Salam\
    LPTHE, Universities of Paris VI & VII and CNRS,\
    75252 Paris 75005, France.
title: '<span style="font-variant:small-caps;">Fall and rise of the gluon splitting function</span>[^1]'
---

LPTHE–P04–04\
hep-ph/0407368

[^1]: Talk presented at DIS 2004, Štrbské Pleso, Slovakia, April 2004, and at the Eighth Workshop on Non-Perturbative Quantum Chromodynamics, Paris, France, June 2004.
