A model for dark matter, naturalness and a complete gauge unification

Abstract

We consider dark matter in a minimal extension of the Standard Model (SM) which breaks electroweak symmetry dynamically and leads to a complete unification of the SM and technicolor coupling constants. The unification scale is determined to be $M_{\mathrm{U}}\approx 2.2\times 10^{15}$ GeV and the unified coupling ${\alpha }_{\mathrm{U}}\approx 0.0304$. Moreover, unification strongly suggest that the technicolor sector of the model must become strong at the scale of $\mathcal{O}$(TeV). The model also contains a tightly constrained sector of mixing neutral fields stabilized by a discrete symmetry. We find the lightest of these states can be DM with a mass in the range $m_{\mathrm{DM}}\approx 30-800$ GeV. We find a large set of parameters that satisfy all available constraints from colliders and from dark matter search experiments. However, most of the available parameter space is within the reach of the next generation of DM search experiments. The model is also sensitive to a modest improvement in the measurement of the precision electroweak parameters.

v2: Few typos corrected and few comments added, match with the published version. 26 pages, 8 figures

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• Is it possible to discover a dark matter particle with an accelerator?
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