On the Subleading-Soft Behaviour of QCD Amplitudes
High Energy Physics - Theory
2015-06-23 v1 High Energy Physics - Phenomenology
Abstract
We elaborate on the radiative behaviour of tree-level scattering amplitudes in the soft regime. We show that the sub-leading soft term in single-gluon emission of quark-gluon amplitudes in QCD is controlled by differential operators, whose universal form can be derived from both on-shell recursion relation and gauge invariance, as it was shown to hold for graviton- and gluon-scattering.
Keywords
Cite
@article{arxiv.1411.1669,
title = {On the Subleading-Soft Behaviour of QCD Amplitudes},
author = {Hui Luo and Pierpaolo Mastrolia and William J. Torres Bobadilla},
journal= {arXiv preprint arXiv:1411.1669},
year = {2015}
}
Comments
24 pages, 4 figures