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.
Highlights
After the discovery of a scalar boson at the Large Hadron Collider (LHC) [1,2] in 2012 an essential task of particle physicists is to reveal the nature of the Higgs-like state and the nature of electroweak symmetry breaking
We presented accurate predictions for neutral Higgs boson production at proton colliders through gluon fusion and bottom-quark annihilation in the CP-conserving Next-to-Minimal Supersymmetric Standard Model (NMSSM)
Electroweak corrections to gluon fusion mediated through light quarks are taken into account and the resummation of sbottom contributions for large values of tan β can be translated from the Minimal Supersymmetric Standard Model (MSSM) to the NMSSM
Summary
After the discovery of a scalar boson at the Large Hadron Collider (LHC) [1,2] in 2012 an essential task of particle physicists is to reveal the nature of the Higgs-like state and the nature of electroweak symmetry breaking. SusHi includes bottom-quark annihilation bb → φ, which in the case of non-tagged final state b-quarks is a good theoretical approach, since it resums logarithms through the b-parton distribution functions The latter process is known as fiveflavor scheme (5FS) up to NNLO QCD [52,53] and can be reweighted from the SM to the MSSM/NMSSM by effective couplings [54,55]. The new release of SusHi provides gluon-fusion cross sections at NLO QCD taking into account the third generation quarks and their superpartners, the squarks, for all the five neutral Higgs bosons of the NMSSM. We conclude and present the Higgs– squark–squark couplings in Appendix A
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