English

Top-Yukawa contributions to $pp\to b\bar{b}H$: two-loop leading-colour amplitudes

High Energy Physics - Phenomenology 2026-04-01 v1

Abstract

We derive two-loop scattering amplitudes for bottom-quark pair production in association with a Higgs boson at the LHC, focusing on terms proportional to the top-quark Yukawa coupling. We treat the bottom quark as a massless parton and employ both the leading-colour and heavy-top-quark approximations. The finite remainder of the two-loop amplitude is expressed in terms of one-mass pentagon functions, and the corresponding rational coefficients are reconstructed analytically from evaluations over finite fields. The scattering processes considered in this work also constitute a subset of Higgs+2-jet production at the LHC in the heavy-top-quark approximation.

Keywords

Cite

@article{arxiv.2603.29480,
  title  = {Top-Yukawa contributions to $pp\to b\bar{b}H$: two-loop leading-colour amplitudes},
  author = {Heribertus Bayu Hartanto and Rene Poncelet},
  journal= {arXiv preprint arXiv:2603.29480},
  year   = {2026}
}

Comments

23 pages, 5 figures, 3 tables, ancillary files available at https://doi.org/10.5281/zenodo.19228932