Partial Waves for Multipositivity

Jaehoon Jeong

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arXiv · 2608.02719

Partial Waves for Multipositivity

Jaehoon Jeong

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Abstract

We develop a partial-wave formalism providing the missing spin-resolved framework for multipositivity among massless planar amplitudes. We present a systematic procedure for constructing kinematic charts realizing the complex-forward limit. Applying it to obtain the four-, five-, and six-point charts, we show how to derive the one-to-two and one-to-three wavefunctions and construct the associated partial waves. The resulting formalism places higher-point multipositivity on the same footing as conventional partial-wave analyses of two-to-two scattering.

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Jaehoon Jeong. 2026-08-03. Partial Waves for Multipositivity. https://arxiv.org/abs/2608.02719

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