The Next-to-Minimal Two Higgs Doublet Model

Abstract

The simplest extension of the Two Higgs Doublet Model is the addition of a real scalar singlet, S. The effects of mixing between the singlet and the doublets can be manifested in two ways. It can modify the couplings of the 126 GeV Higgs boson, h, and it can lead to direct detection of the heavy Higgs at the LHC. In this paper, we show that in the type-I model, for heavy Higgs masses in the 200-600 GeV range, the latter effect will be detected earlier than the former for most of parameter space. Should no such Higgs be discovered in this mass range, then the upper limit on the mixing will be sufficiently strong such that there will be no significant effects on the couplings of the h for most of parameter space. The reverse is true in the type-II model, the limits from measurements of the couplings of the h will dominate over the limits from non-observation of the heavy Higgs.

9 pages, 3 figures, matches published version, references added

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Cited by in corpus (47)

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• BSMPT - Beyond the Standard Model Phase Transitions -A Tool for the Electroweak Phase Transition in Extended Higgs Sectors
• Phenomenological Comparison of Models with Extended Higgs Sectors
• Possible indications for new Higgs bosons in the reach of the LHC: N2HDM and NMSSM interpretations
• Self-consistent Dark Matter Simplified Models with an s-channel scalar mediator
• BSMPT v2 A Tool for the Electroweak Phase Transition and the Baryon Asymmetry of the Universe in Extended Higgs Sectors
• Benchmarking Di-Higgs Production in Various Extended Higgs Sector Models
• Fate of electroweak symmetry in the early Universe: Non-restoration and trapped vacua in the N2HDM
• N2HDECAY: Higgs Boson Decays in the Different Phases of the N2HDM
• Excesses in the low-mass Higgs-boson search and the W-boson mass measurement
• Implications of the observation of dark matter self-interactions for singlet scalar dark matter
• Electroweak Phase Transition in Non-Minimal Higgs Sectors
• Two Higgs Doublets and a Complex Singlet: Disentangling the Decay Topologies and Associated Phenomenology
• The "96 GeV excess" at the LHC
• Characters and Group Invariant Polynomials of (Super)fields: Road to "Lagrangian"
• Asymmetric di-Higgs signals of the next-to-minimal 2HDM with a $U(1)$ symmetry
• Real singlet scalar dark matter extension of the Georgi-Machacek model
• Hilbert Series and Plethystics: Paving the path towards 2HDM- and MLRSM-EFT
• Impact of Electroweak Corrections on Neutral Higgs Boson Decays in Extended Higgs Sectors
• Extended Higgs sector of 2HDM with real singlet facing LHC data
• Search for resonant pair production of Higgs bosons in the bbZZ channel in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Searches for Higgs boson production through decays of heavy resonances
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• The motivation and status of two-body resonance decays after the LHC Run 2 and beyond
• One-loop Corrections to the Higgs Boson Invisible Decay in the Dark Doublet Phase of the N2HDM
• Search for a heavy charged Higgs boson decaying into a $W$ boson and a Higgs boson in final states with leptons and $b$-jets in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector
• Alignment Limit in 2HDM: Robustness put to test
• Electroweak Corrections to Dark Matter Direct Detection in the Dark Singlet Phase of the N2HDM
• Multiboson signals in the UN2HDM
• Phenomenology of the dark matter sector in the 2HDM extended with complex scalar singlet
• Testing a 95 GeV Scalar at the CEPC with Machine Learning
• Fast multilabel classification of HEP constraints with deep learning
• An N2HDM Solution for the possible 96 GeV Excess
• Prospects for exotic $h\to 4\tau$ decays in single and di-Higgs boson production at the LHC and future hadron colliders
• Invisible dark matter decays of a non-Standard Model like CP-even scalar boson
• Multi-Higgs models. Perspectives for identification of wide set of models in future experiments at colliders in the SM-like situation
• 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
• Mounting evidence for a 95 GeV Higgs boson
• Probing new physics in the Boosted $HH\to b\bar{b}\gamma \gamma$ channel at the LHC
• Gravitational Wave Mountains: current-carrying domain walls
• Search for Higgs boson decays into a $Z$ boson and a light hadronically decaying resonance in $pp$ collisions at $\sqrt{s}$=13 TeV with the ATLAS detector