S3 and D4 3HDMs with an extra singlet RH neutrino realize discrete dark matter plus scoto-seesaw neutrino masses, fitting oscillation data under CP conservation.
Inert Doublet Model and LEP II Limits
4 Pith papers cite this work. Polarity classification is still indexing.
abstract
The inert doublet model is a minimal extension of the standard model introducing an additional SU(2) doublet with new scalar particles that could be produced at accelerators. While there exists no LEP II analysis dedicated for these inert scalars, the absence of a signal within searches for supersymmetric neutralinos can be used to constrain the inert doublet model. This translation however requires some care because of the different properties of the inert scalars and the neutralinos. We investigate what restrictions an existing DELPHI collaboration study of neutralino pair production can put on the inert scalars and discuss the result in connection with dark matter. We find that although an important part of the inert doublet model parameter space can be excluded by the LEP II data, the lightest inert particle still constitutes a valid dark matter candidate.
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citation-polarity summary
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2026 4representative citing papers
No significant excess found; new exclusion limits reach m_H = 108 GeV for m_H - m_A = 78 GeV in the Inert Doublet Model.
Fermi LAT data on mini-spikes around stellar-mass black holes rules out substantial regions of Inert Doublet Model dark matter parameter space, especially at multi-TeV masses.
Soft Z3 breaking in the I(2+1)HDM makes the lightest Z3-charged neutral scalar a dark matter candidate while allowing a long-lived opposite-CP state to contribute to relic density or yield missing-energy plus multi-lepton/jet signatures with displaced vertices at the ILC.
citing papers explorer
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Neutrino Masses and Dark Matter Stability in 3HDMs with Minimal Non-Abelian Discrete Symmetries
S3 and D4 3HDMs with an extra singlet RH neutrino realize discrete dark matter plus scoto-seesaw neutrino masses, fitting oscillation data under CP conservation.
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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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Probing the Inert Doublet Dark Matter with Stellar-Mass Black Hole Mini-Spikes
Fermi LAT data on mini-spikes around stellar-mass black holes rules out substantial regions of Inert Doublet Model dark matter parameter space, especially at multi-TeV masses.
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The $Z_3$ soft breaking in the I(2+1)HDM and its cosmological probes
Soft Z3 breaking in the I(2+1)HDM makes the lightest Z3-charged neutral scalar a dark matter candidate while allowing a long-lived opposite-CP state to contribute to relic density or yield missing-energy plus multi-lepton/jet signatures with displaced vertices at the ILC.