Light axion within the next-to-minimal supersymmetric standard model

By B. Dobrescu, Konstantin T. Matchev. 2000

154 citations recorded by the source corpus.

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 β limit.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/cae28f0de903bd52ad687f076af63e0bdd9f19d4

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In Nuclear and High Energy Physics

Citations in the corpus

The constrained NMSSM and Higgs near 125 GeV (2012, background): “Small BR(h1 → a1a1) is expected [20] (see also [21]) when the a1 is very singlet, as is the case in our scenarios once all constraints are imposed.”
A SM-like Higgs near 125 GeV in low energy SUSY: a comparative study for MSSM and NMSSM (2012, background): “Such a problem can be alleviated in the so-called next-to-minimal supersymmetric standard model (NMSSM) [29–45], which is the simplest singlet extension of the MSSM with a scale invariant superpotential.”
Higgs Physics at the HL-LHC and HE-LHC (2019, background): “A well-known example in the context of supersymmetry is the next-to-minimal supersymmetric SM, where this state can arise as a result of an approximate global U(1)R symmetry [1047].”