Ordering multiple soft gluon emissions
High Energy Physics - Phenomenology
2016-06-01 v4
Abstract
We present an expression for the QCD amplitude for a general hard scattering process with any number of soft gluon emissions, to one-loop accuracy. The amplitude is written in two different but equivalent ways: as a product of operators ordered in dipole transverse momentum and as a product of loop-expanded currents. We hope that these results will help in the development of an all-orders algorithm for multiple emissions that includes the full colour structure and both the real and imaginary contributions to the amplitude.
Cite
@article{arxiv.1602.00623,
title = {Ordering multiple soft gluon emissions},
author = {René Ángeles-Martínez and Jeffrey R. Forshaw and Michael H. Seymour},
journal= {arXiv preprint arXiv:1602.00623},
year = {2016}
}
Comments
v4: 3 pages; 1 figure, 4 references and small clarifications added. Version accepted for publication in Physical Review Letters