PoS - Proceedings of Science
Volume 297 - XXV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2017) - WG3 Higgs and BSM Physics in Hadron Collisions
Hadronic Higgs boson decay at order $\alpha_s^4$ and $\alpha_s^5$
J. Davies*, M. Steinhauser and D. Wellmann
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Pre-published on: September 12, 2017
Published on: January 16, 2018
We compute corrections to the decay of the Standard Model Higgs boson to hadrons, to the fourth order in the strong coupling constant $\alpha_s$. We use an effective theory in which the Higgs boson couples directly to bottom quarks and to gluons, via top quark--mediated effective couplings. Numerically, our results are of a comparable size to the previously-known ``massless'' contributions and complete the order $\alpha_s^4$ corrections to the hadronic decay of the Higgs boson. In these proceedings we also provide an independent cross check of the gluonic Higgs boson decay at order $\alpha_s^5$.
DOI: https://doi.org/10.22323/1.297.0295
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