Two-loop amplitudes for $$ t\overline{t}H $$ production: the quark-initiated Nf-part
Bakul Agarwal, Gudrun Heinrich, Stephen Jones, Matthias Kerner, Sven Yannick Klein, Jannis Lang, Vitaly Magerya, Anton Olsson
Abstract
A bstract 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.
Topics & Concepts
Loop (graph theory)AmplitudeProduction (economics)QuarkPhysicsParticle physicsMathematicsEconomicsCombinatoricsOpticsMacroeconomicsParticle physics theoretical and experimental studiesSuperconducting Materials and ApplicationsHigh-Energy Particle Collisions Research