Dark Matter Phenomenology in 2HDMS in light of the 95 GeV excess

Abstract

The Two Higgs Doublet model extended with a complex scalar singlet (2HDMS) is a well-motivated Beyond Standard Model candidate addressing several open problems of nature. In this work, we focus on the dark matter (DM) phenomenology of the complex scalar singlet where the real part of the complex scalar obtains a vacuum expectation value. The model is characterized by an enlarged Higgs spectrum comprising six physical Higgs bosons and a pseudoscalar DM candidate. We address the impact of accommodating the 95 GeV excess on the 2HDMS parameter space and DM observables after including all theoretical and experimental constraints. Finally, we look into the prospects of this scenario at HL-LHC and future lepton colliders for a representative benchmark.

39 pages, 12 figures, 10 tables

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Cited by in corpus (13)

• Superposition of CP-Even and CP-Odd Higgs Resonances: Explaining the 95 GeV Excesses within a Two-Higgs Doublet Model
• Is there a (Pseudo)Scalar at 95 GeV?
• Interpretation of 95 GeV Excess within the Georgi-Machacek Model in Light of Positive Definiteness Constraints
• Exploring Potential Higgs Resonances at 650 GeV and 95 GeV in the 2HDM Type III
• Explaining 95 GeV Anomalies in the 2-Higgs Doublet Model Type-I
• Bayesian Active Search on Parameter Space: a 95 GeV Spin-0 Resonance in the ($B-L$)SSM
• 96 GeV Scalar Boson in the 2HDM with U(1)_H Gauge Symmetry
• Interpretation of LHC excesses at 95 GeV and 152 GeV in an extended Georgi-Machacek model
• Particle-level transformers for 95 GeV Higgs boson searches at future $e^{+}{e}^{-}$ Higgs factories
• Interpreting the 650 GeV and 95 GeV Higgs anomalies in the next-to-two-Higgs-doublet model
• Confronting the broken phase N2HDM with Higgs Data
• Search for Dark Matter in 2HDMS at LHC and future Lepton Colliders
• Vector Dark Matter in a $U(1{)}_X$ extended 2HDM