Scattering equations and BCJ relations for gauge and gravitational amplitudes with massive scalar particles
High Energy Physics - Theory
2015-06-22 v2 High Energy Physics - Phenomenology
Abstract
We generalize the scattering equations to include both massless and massive particles. We construct an expression for the tree-level n-point amplitude with n-2 gluons or gravitons and a pair of massive scalars in arbitrary spacetime dimension as a sum over the (n-3)! solutions of the scattering equations, a la Cachazo, He, and Yuan. We derive the BCJ relations obeyed by these massive amplitudes.
Keywords
Cite
@article{arxiv.1407.7836,
title = {Scattering equations and BCJ relations for gauge and gravitational amplitudes with massive scalar particles},
author = {Stephen G. Naculich},
journal= {arXiv preprint arXiv:1407.7836},
year = {2015}
}
Comments
22 pages. v2: clarification of eqs. (5.5) and (5.6)