Higgs production cross-section in a Standard Model with four generations at the LHC

TL;DR

This paper provides detailed theoretical predictions for Higgs boson production at the LHC within a four-generation Standard Model, including advanced QCD and electroweak corrections, highlighting differences from the three-generation case.

Contribution

It extends Higgs production calculations to a four-generation Standard Model, incorporating full quark mass dependence and higher-order corrections.

Findings

Electroweak and bottom-quark contributions are suppressed compared to the three-generation model.

QCD corrections include NLO with full quark mass dependence and NNLO in the heavy quark approximation.

Provides precise cross-section predictions for Higgs production in a four-generation scenario.

Abstract

We present theoretical predictions for the Higgs boson production cross-section via gluon fusion at the LHC in a Standard Model with four generations. We include QCD corrections through NLO retaining the full dependence on the quark masses, and the NNLO corrections in the heavy quark effective theory approximation. We also include electroweak corrections through three loops. Electroweak and bottom-quark contributions are suppressed in comparison to the Standard Model with three generations.