New multiple soft theorem from split-helicity amplitude decomposition
High Energy Physics - Theory
2025-12-09 v2
Abstract
We investigate the soft decomposition of tree-level gluon amplitudes with split-helicity configurations. First, we show how any split-helicity amplitude can be fully fixed from inverse soft limit using BCFW calculation. We show how the double and triple soft theorems can manifest beyond perturbative calculations through split-helicity decomposition. Next, we obtain a compact formula for the corresponding soft operator which is a simple combination of individual single soft operators. Then we generate the leading and sub-leading soft factors using soft momentum expansion, to compare with results derived from standard calculation.
Cite
@article{arxiv.2503.13363,
title = {New multiple soft theorem from split-helicity amplitude decomposition},
author = {Andriniaina Narindra Rasoanaivo and Fanomezantsoa Arlivah Andriantsarafara},
journal= {arXiv preprint arXiv:2503.13363},
year = {2025}
}