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arXiv · 1706.00624

Hadronic Higgs boson decay at order $\alpha_s^4$ and $\alpha_s^5$

Joshua Davies·Matthias Steinhauser·David Wellmann
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Abstract

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 $\alpha_s^5$.

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Joshua Davies, Matthias Steinhauser, David Wellmann. 2017-06-02. Hadronic Higgs boson decay at order $\alpha_s^4$ and $\alpha_s^5$. https://arxiv.org/abs/1706.00624

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