Small x resummation in collinear factorisation
High Energy Physics - Phenomenology
2016-11-25 v2
Abstract
The summation of the small x-corrections to hard-scattering QCD amplitudes by collinear factorisation method is reconsidered and the K-factor is derived in leading ln x approximation with a result differing from the corresponding expression by Catani and Hautmann (Nucl. Phys. B 427, 475, 1994). The significance of the difference is demonstrated in the examples of structure function F_L and of exclusive vector meson electroproduction. The formulation covers the channels of non-vanishing conformal spin n paving the way for new applications.
Keywords
Cite
@article{arxiv.0910.5443,
title = {Small x resummation in collinear factorisation},
author = {R. Kirschner and M. Segond},
journal= {arXiv preprint arXiv:0910.5443},
year = {2016}
}
Comments
34 pages, 6 figures