Abstract
We study an extension of the Standard Model (SM) in which two copies of the SM scalar SU(2) doublet which do not acquire a Vacuum Expectation Value (VEV), and hence are inert, are added to the scalar sector. We allow for CP-violation in the inert sector, where the lightest inert state is protected from decaying to SM particles through the conservation of a Z 2 symmetry. The lightest neutral particle from the inert sector, which has a mixed CP-charge due to CP-violation, is hence a Dark Matter (DM) candidate. We discuss the new regions of DM relic density opened up by CP-violation, and compare our results to the CP-conserving limit and the Inert Doublet Model (IDM). We constrain the parameter space of the CP-violating model using recent results from the Large Hadron Collider (LHC) and DM direct and indirect detection experiments.
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Cordero-Cid, A., Hernández-Sánchez, J., Keus, V. et al. CP violating scalar Dark Matter. J. High Energ. Phys. 2016, 14 (2016). https://doi.org/10.1007/JHEP12(2016)014
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DOI: https://doi.org/10.1007/JHEP12(2016)014