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Observing the Dark Scalar Doublet and its Impact on the Standard-Model Higgs Boson at Colliders
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abstract
If the Standard Model of particle interactions is extended to include a second scalar doublet $[H^{+},(H^{0}+iA^{0})/\sqrt{2}]$, which is odd under an unbroken Z_{2} discrete symmetry, it may be called the $dark$ scalar doublet, because its lightest neutral member, say H^{0}, is one posssible component for the dark matter of the Universe. We discuss the general phenomenology of the four particles of this doublet, without assuming that H^{0} is the dominant source of dark matter. We also consider the impact of this $dark$ scalar doublet on the phenomenology of the SM Higgs boson h.
Forward citations
Cited by 7 Pith papers
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Fermi-ball in a multicomponent dark matter framework and its gravitational wave signatures
In a two-component dark matter model, a first-order phase transition can produce Fermi-balls and gravitational waves, with Fermi-balls potentially contributing up to about 30% of the dark matter relic density.
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Probing the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
A 10 TeV muon collider could discover inert-doublet scalars produced via vector-boson fusion, reaching 5 sigma for selected benchmark points with machine-learning analysis, while 3 TeV lacks sensitivity.
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Search for pair production of additional neutral scalars within the Inert Doublet Model in a final state with two electrons or two muons in proton-proton collisions at $\sqrt{s}$ = 13 TeV and 13.6 TeV
No significant excess found; new exclusion limits reach m_H = 108 GeV for m_H - m_A = 78 GeV in the Inert Doublet Model.
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Dark Matter Escaping Direct Detection Runs into Higgs Mass Hierarchy Problem
TeV-scale Higgs-portal dark matter produces Higgs mass corrections larger than the measured Higgs mass, which excludes most such WIMPs except near half the Higgs mass.
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Inert Doublet Model Signatures at Future e+e- Colliders
Future e+e- colliders could discover inert scalars up to neutral mass sum of 330 GeV at 500 GeV and 450 GeV at CLIC 1.5 TeV, using leptonic signatures.
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Investigating extended scalar sectors at current and future colliders
Current LHC data leave substantial room for singlet and inert doublet scalar extensions, and scalar-to-scalar decay signatures with rates up to tens of picobarns remain unexplored.
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BSM: Extended Scalar Sectors
An updated review chapter on extended scalar sectors, their constraints, dark matter and CP violation links, and future collider searches.
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