P. Ko

Higgs Portal Vector Dark Matter : Revisited

A bstractWe revisit the Higgs portal vector dark matter model including a hidden sector Higgs field that generates the mass of the vector dark matter. The model becomes renormalizable and has two scalar bosons, the mixtures of the standard model (SM) Higgs and the hidden sector Higgs bosons. The strong bound from direct detection such as XENON100 is evaded due to the cancellation mechanism between the contributions from two scalar bosons. As a result, the model becomes still viable in large range of dark matter mass, contrary to some claims in the literature. The Higgs properties are also affected, the signal strengths for the Higgs boson search being universally suppressed relative to the SM value, which could be tested at the LHC in the future.

Higgs portal vector dark matter for GeV scale -ray excess from galactic center

We show that the

Vacuum structure and stability of a singlet fermion dark matter model with a singlet scalar messenger

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Singlet Portal Extensions of the Standard Seesaw Models to a Dark Sector with Local Dark Symmetry

scale

Invisible Higgs Decay Width vs. Dark Matter Direct Detection Cross Section in Higgs Portal Dark Matter Models

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Implications on supersymmetry-breaking mediation mechanisms from observing Bs-->mu+mu- and the muon g-2.

-ray excess from the direction of the Galactic Center can be naturally explained by the pair annihilation of Abelian vector dark matter (VDM) into a pair of dark Higgs bosons

Beyond the dark matter effective field theory and a simplified model approach at colliders

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Inclusive double-quarkonium production at the Large Hadron Collider

, followed by the subsequent decay of

Can Zee-Babu model implemented with scalar dark matter explain both Fermi-LAT 130 GeV γ-ray excess and neutrino physics?

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Minimal renormalizable simplified dark matter model with a pseudoscalar mediator

into