First look at the evaluation of three-loop non-planar Feynman diagrams for Higgs plus jet production

A bstract We present new computations for Feynman integrals relevant to Higgs plus jet production at three loops, including first results a non-planar class of integrals. The are expressed in terms generalised polylogarithms up transcendental weight six. also provide the full canonical differential equations, which allows us make structural observations on answer. In particular, we find counterexample previously conjectured adjacency relations, planar integral tennis-court type. Additionally, triple ladder diagram, two novel alphabet letters. This information may be useful future bootstrap approaches.