Neutral Higgs production at proton colliders in the CP-conserving NMSSM

TL;DR

This paper provides precise predictions for neutral Higgs boson production at proton colliders within the CP-conserving NMSSM, incorporating higher-order corrections and new model features, implemented in the SusHi code.

Contribution

It introduces an advanced calculation framework for Higgs production in the NMSSM, including NLO corrections and the effects of an additional singlet, extending previous MSSM results.

Findings

Accurate cross section predictions for Higgs production in the NMSSM.

Implementation of the calculations in the SusHi code.

Discussion of theoretical uncertainties in the predictions.

Abstract

We discuss neutral Higgs boson production through gluon fusion and bottom-quark annihilation in the CP-conserving $\mathbb{Z}_3$-invariant Next-to-Minimal Supersymmetric Standard Model (NMSSM) at proton colliders. For gluon fusion we adapt known asymptotic expansions in supersymmetric particles for the inclusion of next-to-leading order contributions of squarks and gluinos from the Minimal Supersymmetric Standard Model (MSSM) and include electro-weak corrections involving light quarks. Together with the resummation of higher order sbottom contributions in the bottom-quark Yukawa coupling for both production processes we thus present accurate cross section predictions implemented in a new release of the code SusHi. We elaborate on the new features of an additional SU$(2)_L$ singlet in the production of CP-even and -odd Higgs bosons with respect to the MSSM and include a short discussion of theory uncertainties.