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Light Higgs bosons in Two-Higgs-Doublet Models

Abstract : We explore the possibilities in two-Higgs-doublet models (2HDMs) of Type I and Type II for Higgs states with mass below about 60 GeV, i.e. less than half of the ~125 GeV mass of the observed SM-like Higgs boson. We identify the latter as either the lighter or the heavier CP-even state, h or H, and employ scans of the 2HDM parameter space taking into account all relevant theoretical and experimental constraints, including the most up-to-date Higgs signal strength measurements. We find that, in both Type I and Type II models, such light Higgs states are phenomenologically viable and can lead to interesting signatures. Part of the relevant parameter space may be testable with the existing 8 TeV LHC data, e.g. by looking for direct production of the light state via gg-fusion or bb-associated-production using its \tau^+ \tau^- and \mu^+ \mu^- decays at low invariant mass.
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Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, December 11, 2014 - 8:41:56 AM
Last modification on : Thursday, November 19, 2020 - 12:59:04 PM

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J. Bernon, J.F. Gunion, Yun Jiang, S. Kraml. Light Higgs bosons in Two-Higgs-Doublet Models. Physical Review D, American Physical Society, 2015, 91, pp.075019. ⟨10.1103/PhysRevD.91.075019⟩. ⟨in2p3-01093706⟩



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