Full-colour double-virtual amplitudes for associated production of a Higgs boson with a bottom-quark pair at the LHC

Full-colour double-virtual amplitudes for associated production of a Higgs boson with a bottom-quark pair at the LHC

Authors: Simon Badger, Heribertus Bayu Hartanto, Rene Poncelet, Zihao Wu, Yang Zhang, Simone Zoia

Abstract: We present the double-virtual amplitudes contributing to the production of a Higgs boson in association with a bb¯ pair at the Large Hadron Collider. We perform the computation within the five-flavour scheme, which employs massless bottom quarks and finite bottom-Yukawa coupling, taking into account all the colour structures. We derive the analytic form of the helicity amplitudes through finite-field reconstruction techniques. The analytic expressions have been implemented in a public C++ library, and we demonstrate that evaluations are sufficiently stable and efficient for use in phenomenological studies.

Article on arxiv.org