Yangian-type symmetries of non-planar leading singularities

  title={Yangian-type symmetries of non-planar leading singularities},
  author={Rouven Frassek and David Meidinger},
  journal={Journal of High Energy Physics},
A bstractWe take up the study of integrable structures behind non-planar contributions to scattering amplitudes in N=4$$ \mathcal{N}=4 $$ super Yang-Mills theory. Focusing on leading singularities, we derive the action of the Yangian generators on color-ordered subsets of the external states. Each subset corresponds to a single boundary of the non-planar on-shell diagram. While Yangian invariance is broken, we find that higher-level Yangian generators still annihilate the non-planar on-shell… 

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