Loop Amplitudes in Pure Yang-Mills from Generalised Unitarity
High Energy Physics - Theory
2009-11-11 v1 High Energy Physics - Phenomenology
Abstract
We show how generalised unitarity cuts in D = 4 - 2 epsilon dimensions can be used to calculate efficiently complete one-loop scattering amplitudes in non-supersymmetric Yang-Mills theory. This approach naturally generates the rational terms in the amplitudes, as well as the cut-constructible parts. We test the validity of our method by re-deriving the one-loop ++++, -+++, --++, -+-+ and +++++ gluon scattering amplitudes using generalised quadruple cuts and triple cuts in D dimensions.
Keywords
Cite
@article{arxiv.hep-th/0506068,
title = {Loop Amplitudes in Pure Yang-Mills from Generalised Unitarity},
author = {Andreas Brandhuber and Simon McNamara and Bill Spence and Gabriele Travaglini},
journal= {arXiv preprint arXiv:hep-th/0506068},
year = {2009}
}
Comments
35 pages, 10 figures