Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.201301
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Funding
- ESF [8090, JD164, SF0690030s09]
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Scalar dark matter (DM) can have dimensionful coupling to the Higgs boson-the soft portal into DM-which is predicted to be unsuppressed by the underlying SO(10) grand unified theory ( GUT). The dimensionful coupling can be large, mu/v >> 1, without spoiling the perturbativity of low energy theory up to the GUT scale. We show that the soft portal into DM naturally triggers radiative electroweak symmetry breaking (EWSB) via large 1-loop DM corrections to the effective potential. In this scenario, EWSB, the DM thermal freeze-out cross section, and DM scattering on nuclei are all dominated by the same coupling, predicting the DM mass range to be 700 GeV < M-DM < 2 TeV. The spin-independent direct detection cross section is predicted to be just below the present experimental bounds.
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