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Electroweak-Charged Dark Matter and SO(10) Unification with Parity
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abstract
We consider electroweak-charged dark matter in an $SO(10)$ unified theory that solves the strong $CP$ problem via Parity. Electroweak-charged dark matter has a colored $SO(10)$ partner, whose mass should be much above the dark matter mass to avoid cosmological problems arising from the decay of the colored partner. The mass hierarchy can be naturally achieved by an $SO(10)\times CP$ symmetry breaking Higgs that has a missing vacuum expectation value. The mass hierarchy, via quantum corrections to the gauge coupling constants, lowers the unification scale and enhances the proton decay rate. Hyper-Kamiokande will probe the parameter space with precise gauge coupling unification. We derive the range of the top quark mass and the strong coupling constant preferred by radiative Parity breaking by the Higgs Parity mechanism.
Forward citations
Cited by 3 Pith papers
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Accidentally Stable Dark Matter in a Parity Solution to the Strong CP Problem
SU(2)_L×SU(2)_R bi-triplet fermions are accidentally stable dark matter in a parity solution to strong CP, with relic abundance forcing v_R ≲ 150 TeV.
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Upper Bound on Parity Breaking Scale for Doublet WIMP Dark Matter
In a Parity-symmetric extension of the Standard Model with doublet-pair WIMP dark matter, thermal relic abundance requires the Parity breaking scale to be below 25-60 TeV.
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Spontaneous CP Violation and Flavor Changing Neutral Currents in Minimal SO(10)
In minimal SO(10) with spontaneous CP violation, flavor-changing neutral currents and proton decay branching ratios are correlated through one mixing matrix, yielding a testable relation among future low-energy measurements.
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