General expressions for extra-dimensional tree amplitudes and all-plus 1-loop integrands in Q-cut representaion
High Energy Physics - Theory
2019-10-08 v4
Abstract
In this paper, we give the general expressions for a special series of tree amplitudes of the Yang-Mills theory. This series of amplitudes have two adjacent massless spin-1 particles with extra-dimensional momenta and any number of positive helicity gluons. With special helicity choices, we use the spinor helicity formalism to express these n-point amplitudes in compact forms, and find a clever way to use the BCFW recursion relations to prove the results. Then these amplitudes are used to form the complete 1-loop all-plus integrand with any number of gluons, expressed in the Q-cut representation.
Keywords
Cite
@article{arxiv.1610.05013,
title = {General expressions for extra-dimensional tree amplitudes and all-plus 1-loop integrands in Q-cut representaion},
author = {Yang An and Yi Li},
journal= {arXiv preprint arXiv:1610.05013},
year = {2019}
}
Comments
Published version with 20 pages, 8 figure, and 1 new reference