Constraints on Scalar Phantoms

Abstract

We update the constraints on the minimal model of dark matter, where a stable real scalar field is added to the standard model Lagrangian with a renormalizable coupling to the Higgs field. Once we fix the dark matter abundance, there are only two relevant model parameters, the mass of the scalar field and that of the Higgs boson. The recent data from the CDMS II experiment have excluded a parameter region where the scalar field is light such as less than about 50 GeV. In a large parameter region, the consistency of the model can be tested by the combination of future direct detection experiments and the LHC experiments.

7 pages, 1 figure

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• Singlet Scalar Dark Matter: monochromatic gamma rays and metastable vacua
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• Dark Matter in Classically Scale-Invariant Two Singlets Standard Model
• Light Dark Matter, Light Higgs and the Electroweak Phase Transition
• Low Mass Dark Matter and Invisible Higgs Width In Darkon Models
• A Two-Singlet Model for Light Cold Dark Matter
• Scalar Dark Matter and Standard Model with Four Generations
• Testing Higgs portal dark matter via $Z$ fusion at a linear collider
• Signals of an invisibly decaying Higgs in a scalar dark matter scenario: a study for the Large Hadron Collider
• Causality-Violating Higgs Singlets at the LHC
• Dark matter and Higgs phenomenology predicted by left-right twin Higgs model in light of CDMS II results
• RGE of a Cold Dark Matter Two-Singlet Model
• Scalar Dark Matter Search at the LHC through FCNC Top Decay
• Elliptic Annular Josephson Tunnel Junctions in an external magnetic field: The statics
• Connections between the Seesaw and Dark Matter Searches