Completing the hadronic Higgs boson decay at order $\alpha_s^4$

Understand

We compute four-loop corrections to the hadronic decay of the Standard Model Higgs boson which are induced by effective couplings to bottom quarks and gluons, mediated by the top quark.

• Our numerical results are comparable in size to the purely massless contributions which have been known for a few years.
• The results presented in this paper complete the order $\alpha_s^4$ corrections to the hadronic Higgs boson decay.