Abstract
In this paper, we extend the collinear superspace formalism to include the full range of \( \mathcal{N} \) = 1 supersymmetric interactions. Building on the effective field theory rules developed in a companion paper — Navigating Collinear Superspace [1] — we construct collinear superspace Lagrangians for theories with non-trivial F- and D-term auxiliary fields. For (massless) Wess-Zumino models, the key ingredient is a novel type of Grassmann-valued supermultiplet whose lowest component is a (non-propagating) fermionic degree of freedom. For gauge theories coupled to charged chiral matter, the key ingredient is a novel type of vector superfield whose lowest component is a non-propagating gauge potential. This unique vector superfield is used to construct a gauge-covariant derivative; while such an object does not appear in the standard full superspace formalism, it is crucial for modeling gauge interactions when the theory is expres sed on a collinear slice. This brings us full circle, by showing that all types of \( \mathcal{N} \) = 1 theories in four dimensions can beconstructed in collinear superspace from purely infrared considerations. We speculate that supersymmetric theories with \( \mathcal{N} \) > 1 could also be implemented using similar collinear superspace constructions.
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Cohen, T., Elor, G., Larkoski, A.J. et al. Circumnavigating collinear superspace. J. High Energ. Phys. 2020, 156 (2020). https://doi.org/10.1007/JHEP02(2020)156
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DOI: https://doi.org/10.1007/JHEP02(2020)156