Abstract
We study the signal rates of the second lightest CP-even Higgs boson, [Formula: see text], of the NMSSM produced in gluon fusion, in association with bottom quarks and in association with top quarks, which is not the SM-like Higgs boson, at the LHC. We evaluate the production rates of [Formula: see text] in the SM fermionic and bosonic final states in addition to [Formula: see text], [Formula: see text] and [Formula: see text] final states. It is observed that the size of the signal rates in some regions of the NMSSM parameter space is quite large and that could help extracting [Formula: see text] signals at the LHC through a variety of decay channels.
Highlights
We use the package to scan over some regions of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) parameter space in order to obtain a general view of the phenomenology of the second lightest CP-even Higgs boson, h2, at the Large Hadron Collider (LHC)
We have computed the cross-section for h2 produced in gluon fusion, in association with a bb pair and in association with a ttpair in the following final sta√tes: τ +τ −, bb, tt, γγ, Zγ, W +W −, ZZ, a1a1, h1h1 and Za1 at the LHC with s = 14 TeV
It has been found that the size of the signal rates in some regions of the parameter space is quite large and that could help discovering the h2 through τ +τ −, bb, γγ and Zγ final states in the low mass range mh2 2mW
Summary
Assuming CP-conservation in the Higgs sector, the Next-to-Minimal Supersymmetric Standard Model (NMSSM)[1,2,3,4,5,6,7,8,9,10,11] predicts one or more light CP-even Higgs boson, either the lightest Higgs boson h1 or the second lightest Higgs boson h2, which could be the Higgs particle with a mass around 125 GeV discovered by the Large Hadron Collider (LHC).[12,13,14,15] This discovered SM-like Higgs can be accommodated in the context of the NMSSM without much fine tuning, see Refs. 16–33 for more details. This is an Open Access article published by World Scientific Publishing Company. The phenomenology of the NMSSM Higgs sector has been studied by many authors, for a review and details, see Refs. We study the production rates of the second lightest Higgs boson h2, if it is not the SM-like Higgs boson, of the NMSSM at the LHC through the following production channels: gluon fusion gg → h2 and associated production with bottom–antibottom pair gg → bbh[2] and top–antitop pair gg → tth[2] for the most promising final states. It is observed that there exist some regions of the NMSSM parameter space where the cross-section times branching ratios are quite sizable and could help extracting h2 signals at the LHC through the above production channels.
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