All four-point mixed gluon-graviton amplitudes in pure Einstein-Yang-Mills theory with at most one state of negative helicity are computed at one-loop order and maximal powers of the gauge coupling using D-dimensional generalized unitarity. The resulting purely rational expressions take very compact forms. We comment on the color-kinematics duality picture and a relation to collinear limits of pure gluon amplitudes.
@article{arxiv.1803.08497,
title = {All rational one-loop Einstein-Yang-Mills amplitudes at four points},
author = {Dhritiman Nandan and Jan Plefka and Gabriele Travaglini},
journal= {arXiv preprint arXiv:1803.08497},
year = {2018}
}