Dissolving N=4 loop amplitudes into QCD tree amplitudes
High Energy Physics - Theory
2009-11-10 v2 High Energy Physics - Phenomenology
Abstract
We use the infrared consistency of one-loop amplitudes in N=4 Yang-Mills theory to derive a compact analytic formula for a tree-level NNMHV gluon scattering amplitude in QCD, the first such formula known. We argue that the IR conditions, coupled with recent advances in calculating one-loop box coefficients, can give a new tool for computing tree-level amplitudes in general. Our calculation suggests that many amplitudes have a structure which is even simpler than that revealed so far by current twistor-space constructions.
Cite
@article{arxiv.hep-th/0412265,
title = {Dissolving N=4 loop amplitudes into QCD tree amplitudes},
author = {Radu Roiban and Marcus Spradlin and Anastasia Volovich},
journal= {arXiv preprint arXiv:hep-th/0412265},
year = {2009}
}
Comments
9 pages, revtex4. v2: minor changes, typo in (1) corrected