Neutral MSSM Higgs-boson production with heavy quarks: NLO supersymmetric QCD corrections

TL;DR

This paper calculates next-to-leading-order supersymmetric QCD corrections for neutral Higgs boson production with heavy quarks in the MSSM at the LHC, highlighting their significance at large tan(beta).

Contribution

It provides the first detailed NLO SUSY-QCD correction calculations for neutral Higgs production with heavy quarks in the MSSM, including the impact of large tan(beta).

Findings

Corrections are moderate at small tan(beta).

Corrections can be sizable at large tan(beta).

Effective bottom Yukawa couplings absorb most corrections at large tan(beta).

Abstract

Within the minimal supersymmetric extension of the Standard Model (MSSM) the associated production of neutral Higgs bosons with top and bottom quarks belongs to the most important Higgs-boson production processes at the LHC. At large values of tan(beta), in particular, bottom--Higgs associated production constitutes the dominant production channel within the MSSM. We have calculated the next-to-leading-order supersymmetric QCD corrections to neutral Higgs production through the parton processes q qbar, gg -> t tbar / b bbar + h/H/A and present results for the total cross sections. The genuine SUSY-QCD corrections are of moderate size for small tan(beta), but can be sizable for large tan(beta). In the latter case the bulk of these corrections can be absorbed into effective bottom Yukawa couplings.