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arxiv: hep-ph/0008192 · v1 · submitted 2000-08-18 · ✦ hep-ph · hep-ex

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Light Axion within the Next-to-Minimal Supersymmetric Standard Model

Bogdan A. Dobrescu , Konstantin T. Matchev (Fermilab)
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classification ✦ hep-ph hep-ex
keywords higgsaxionbosonlargelightlimitmodelnext-to-minimal
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We analyze the Higgs sector in the Next-to-Minimal Supersymmetric Standard Model, emphasizing the possibility of a light CP-odd scalar (axion) in the spectrum. We compute the coupling of the Standard-Model-like Higgs boson to a pair of axions, and show that it can be large enough to modify the Higgs branching fractions, with a significant impact on the Higgs searches. We delineate the range of parameters relevant for this scenario, and also derive analytic expressions for the scalar masses and couplings in two special cases - a decoupling limit where all scalars other than the axion are heavier than the Standard-Model-like Higgs boson, and the large tan beta limit.

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  1. Probing Boosted Light Scalars in the Type-I 2HDM

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    Boosted light scalars decaying to b b-bar in Type-I 2HDM can be tagged as double-b fat-jets and used with SM gauge bosons to probe heavy scalars up to 540 GeV at the HL-LHC for masses 30-70 GeV.