Two-loop amplitudes for $ t\overline{t}H $ production: the quark-initiated N$_f$-part
Agarwal, Bakul 1; Heinrich, Gudrun 1; Jones, Stephen P.; Kerner, Matthias 1; Klein, Sven Yannick; Lang, Jannis 1; Magerya, Vitaly 1; Olsson, Anton 1 1 Institut für Theoretische Physik (ITP), Karlsruher Institut für Technologie (KIT)
Abstract:
We present numerical results for the two-loop virtual amplitude entering the NNLO corrections to Higgs boson production in association with a top quark pair at the LHC, focusing, as a proof of concept of our method, on the part of the quark-initiated channel containing loops of massless or massive quarks. Results for the UV renormalised and IR subtracted two-loop amplitude for each colour structure are given at selected phase-space points and visualised in terms of surfaces as a function of two-dimensional slices of the full phase space.