2014/08/11 by Jonathan Grigo, Kirill Melnikov, Matthias Steinhauser · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2014.09.003
15 pages, 3 figures
arxiv created 2014/08/11 · arxiv updated 2015/06/22
We calculate the three-loop matching coefficient CHH, required for a consistent description of Higgs boson pair production in gluon fusion through next-to-next-to-leading order QCD in the heavy top quark approximation. We also compute the gg → HH amplitude in mt → ∞ approximation in the full theory and show its consistency with an earlier computation in heavy-top effective theory.