Heavy MSSM Higgs production at the LHC and decays to WW,ZZ at higher orders

Abstract

In this paper we discuss the production of a heavy scalar MSSM Higgs boson H and its subsequent decays into pairs of electroweak gauge bosons WW and ZZ. We perform a scan over the relevant MSSM parameters, using constraints from direct Higgs searches and several low-energy observables. We then compare the possible size of the pp -> H -> WW,ZZ cross sections with corresponding Standard Model cross sections. We also include the full MSSM vertex corrections to the H -> WW,ZZ decay and combine them with the Higgs propagator corrections, paying special attention to the IR-divergent contributions. We find that the vertex corrections can be as large as -30% in MSSM parameter space regions which are currently probed by Higgs searches at the LHC. Once the sensitivity of these searches reaches two percent of the SM signal strength the vertex corrections can be numerically as important as the leading order and Higgs self-energy corrections and have to be considered when setting limits on MSSM parameters.

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Cited by in corpus (10)

• Generic calculation of two-body partial decay widths at the full one-loop level
• Decays of the neutral Higgs bosons into SM fermions and gauge bosons in the $\mathcal{C}\mathcal{P}$-violating NMSSM
• The Implementation of the Renormalized Complex MSSM in FeynArts and FormCalc
• Supersymmetric Heavy Higgs Bosons at the LHC
• H-COUP Version 2: a program for one-loop corrected Higgs boson decays in non-minimal Higgs sectors
• One-Loop Corrections to the Two-Body Decays of the Neutral Higgs Bosons in the Complex NMSSM
• Gauge Dependences of Higher-Order Corrections to NMSSM Higgs Boson Masses and the Charged Higgs Decay $H^{\pm }\to W^{\pm }{h}_i$
• Towards Higgs masses and decay widths satisfying the symmetries in the (N)MSSM
• The naturalness in the BLMSSM and B-LSSM
• $CP$-odd form factor in the $HWW$ vertex