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arXiv · 2106.13977

Fermionic decays of NMSSM Higgs bosons under LHC 13 TeV constraints

Marwa Telba·Maien Binjonaid
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Abstract

This paper investigates the impact of the recent LHC constraints on the Higgs sector in the semi-constrained version of the Next-to-Minimal Supersymmetric Standard Model. Our analysis focuses on the parameter space for which the value of the Higgs doublet-singlet coupling, $\lambda$, is large as possible, while the ratio between the vacuum expectation values of the two Higgs doublets, $\tan\beta$, is small as possible. Under the current constraints, we present the possible fermionic decay channels and reduced cross-section into fermions final states for the lightest neutral Higgs bosons in the NMSSM, $(h_{1}$, $h_{2}$, and $a_{1})$. We found that the branching ratios of the non SM-like Higgs ($a_{1}$ and $h_{2}$) into a pair of bottom quarks are near 90\% level when the Higgs mass below 400 GeV. Moreover, the branching ratio of $h_{2}/a_{1}\rightarrow t\bar{t}$ can reach unity for all mass ranges when these bosons are mostly singlet.

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Marwa Telba, Maien Binjonaid. 2021-06-26. Fermionic decays of NMSSM Higgs bosons under LHC 13 TeV constraints. https://doi.org/10.1016/j.rinp.2021.104464

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