EWSB from the soft portal into Dark Matter and prediction for direct detection

Details EWSB from the soft portal into Dark Matter and prediction for direct detection EWSB from the soft portal into Dark Matter and prediction for direct detection

2009-12-15

arxiv.org/abs/0912.2729v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

CDMS II new results added and analyzed, Fig. 3 modified, 4 pages, 3 figures

Scientific paper

Scalar Dark Matter (DM) can have dimensionful coupling to the Higgs boson - the "soft" portal into DM - which is predicted to be unsuppressed by underlying SO(10) GUT. The dimensionful coupling can be large, \mu/v >> 1, without spoiling perturbativity of low energy theory up to the GUT scale. We show that the soft portal into DM naturally triggers radiative EWSB via large 1-loop DM corrections to the effective potential. In this scenario EWSB, DM thermal freeze-out cross section and DM scattering on nuclei are all dominated by the same coupling, predicting DM mass range to be 700 GeV< M_{DM} < 2 TeV. The spin-independent direct detection cross section is predicted to be just at the present experimental sensitivity and can explain the observed CDMS II recoil events.

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