title: Electroweak symmetry breaking from the soft portal into dark matter and prediction for direct detection.
abstract: 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, μ/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.
authors.affiliation: National Institute of Chemical Physics and Biophysics, Ravala 10, Tallinn 10143, Estonia.
authors.forename: Mario
authors.initials: M
authors.lastname: Kadastik
authors.forename: Kristjan
authors.initials: K
authors.lastname: Kannike
authors.forename: Antonio
authors.initials: A
authors.lastname: Racioppi
authors.forename: Martti
authors.initials: M
authors.lastname: Raidal