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arXiv · 0907.1894

Dark Matter as the signal of Grand Unification

Mario Kadastik·Kristjan Kannike·Martti Raidal
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Abstract

We argue that the existence of Dark Matter (DM) is a possible consequence of GUT symmetry breaking. In GUTs like SO(10), discrete Z_2 matter parity (-1)^{3(B-L)} survives despite of broken B-L, and group theory uniquely determines that the only possible Z_2-odd matter multiplets belong to representation 16. We construct the minimal non-SUSY SO(10) model containing one scalar 16 for DM and study its predictions below M_{G}. We find that EWSB occurs radiatively due to DM couplings to the SM Higgs boson. For thermal relic DM the mass range M_{DM}\sim (0.1-1) TeV is predicted by model perturbativity up to M_{G}. For M_{DM}\sim (1) TeV to explain the observed cosmic ray anomalies with DM decays, there exists a lower bound on the spin-independent direct detection cross section within the reach of planned experiments.

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Mario Kadastik, Kristjan Kannike, Martti Raidal. 2009-12-14. Dark Matter as the signal of Grand Unification. https://doi.org/10.1103/physrevd.80.085020%2010.1103%2Fphysrevd.81.029903

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