Non-abelian infra-red cancellations in the unintegrated NLO kernel
High Energy Physics - Phenomenology
2009-10-02 v1
Abstract
We investigate the infrared singularity structure of Feynman diagrams entering the next-to-leading-order (NLO) DGLAP kernel (non-singlet). We examine cancellations between diagrams for two gluon emission contributing to NLO kernels. We observe the crucial role of color coherence effects in cancellations of infra-red singularities. Numerical calculations are explained using analytical formulas for the singular contributions.
Cite
@article{arxiv.0905.1403,
title = {Non-abelian infra-red cancellations in the unintegrated NLO kernel},
author = {Magdalena Slawinska and Aleksander Kusina},
journal= {arXiv preprint arXiv:0905.1403},
year = {2009}
}
Comments
13 pages, 8 figures