New multiple soft theorem from split-helicity amplitude decomposition

Andriniaina Narindra Rasoanaivo; Fanomezantsoa Arlivah Andriantsarafara

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arXiv · 2503.13363

New multiple soft theorem from split-helicity amplitude decomposition

Andriniaina Narindra Rasoanaivo·Fanomezantsoa Arlivah Andriantsarafara

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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.

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Andriniaina Narindra Rasoanaivo, Fanomezantsoa Arlivah Andriantsarafara. 2025-03-17. New multiple soft theorem from split-helicity amplitude decomposition. https://arxiv.org/abs/2503.13363

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