SUSY QCD Corrections to Higgs Pair Production from Bottom Quark Fusion

TL;DR

This paper provides a detailed NLO calculation of Higgs pair production via bottom-quark fusion in supersymmetric models, highlighting significant SQCD corrections influenced by heavy superpartners and large tanb effects.

Contribution

It offers the first complete NLO analysis including squark and gluino loops for Higgs pair production in MSSM and mSUGRA models.

Findings

Large NLO SQCD corrections in certain parameter regions.

Decoupling behavior for heavy squark and gluino masses.

Enhanced bottom-Higgs couplings at large tanb.

Abstract

We present a complete next-to-leading order (NLO) calculation for the total cross section for inclusive Higgs pair production via bottom-quark fusion at the CERN Large Hadron Collider (LHC) in the minimal supersymmetric standard model (MSSM) and the minimal supergravity model (mSUGRA). We emphasize the contributions of squark and gluino loops (SQCD) and the decoupling properties of our results for heavy squark and gluino masses. The enhanced couplings of the b quark to the Higgs bosons in supersymmetric models with large tanb yield large NLO SQCD corrections in some regions of parameter space.