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Planar binary trees in scattering amplitudes

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arxiv 2011.14413 v1 pith:7EE4KITK submitted 2020-11-29 math.CO hep-th

Carlos R. Mafra This is my paper · ORCID
classification math.COhep-th
keywords amplitudesscatteringsomebinaryplanarpresentedtreesadditional
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These notes are a written version of my talk given at the CARMA workshop in June 2017, with some additional material. I presented a few concepts that have recently been used in the computation of tree-level scattering amplitudes (mostly using pure spinor methods but not restricted to it) in a context that could be of interest to the combinatorics community. In particular, I focused on the appearance of {\it planar binary trees} in scattering amplitudes and presented some curious identities obeyed by related objects, some of which are known to be true only via explicit examples.

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  1. A field-inspired derivation of open string amplitudes

    hep-th 2026-08 conditional novelty 6.0 of 10

    A perturbiner-like recursion with a weak associativity condition generates multi-parametric series representations of open string tree amplitudes without moduli integration.

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