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This paper investigates the impact of the recent LHC constraints on the Higgssector in the semi-constrained version of the Next-to-Minimal SupersymmetricStandard Model. Our analysis focuses on the parameter space for which the valueof the Higgs doublet-singlet coupling, $\lambda$, is large as possible, whilethe ratio between the vacuum expectation values of the two Higgs doublets,$\tan\beta$, is small as possible. Under the current constraints, we presentthe possible fermionic decay channels and reduced cross-section into fermionsfinal 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-likeHiggs ($a_{1}$ and $h_{2}$) into a pair of bottom quarks are near 90\% levelwhen 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 whenthese bosons are mostly singlet.

Fermionic decays of NMSSM Higgs bosons under LHC 13 TeV constraints