Electroweak corrections to g plus g → Hl,h and Hl,h→ γ plus γ in the Higgs-singlet extension of the Standard model

We calculate the next-to-leading order electroweak corrections for Higgs-boson production in gluon fusion and the Higgs-boson decay into two photons or gluons in the real Higgs-singlet extension of the Standard model (HSESM). For the light Higgs-boson of the HSESM the electroweak corrections for these processes are of the same order of magnitude as in the Standard model. For the heavy Higgs-boson of the HSESM the electroweak corrections can become large depending on the considered scenario.

Automated summary

This article calculates the electroweak corrections for Higgs-boson production in gluon fusion and the Higgs-boson decay into two photons or gluons in the real Higgs-singlet extension of the Standard model (HSESM). The electroweak corrections for these processes are of the same order of magnitude as in the Standard model for the light Higgs-boson, but can become large for the heavy Higgs-boson depending on the scenario.