Gauge-singlet dark matter in a left-right symmetric model with spontaneous CP violation

Abstract

We propose a dark matter (DM) scenario in an extension of a left-right symmetric model with a gauge-singlet scalar field. The gauge-singlet scalar can automatically become a DM candidate, provided that both P and CP symmetries are only broken spontaneously. Thus no extra discrete symmetries are needed to make the DM candidate stable. After constraining the model parameters from the observed relic DM density we make predictions for direct detection experiments. We show that for some parameter range, the predicted WIMP-nucleon elastic scattering cross section can reach the current experimental upper bound, which can be tested by the experiments in the near future.

20 pages, 5 figures, references added

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• Origins of the Isospin Violation of Dark Matter Interactions
• Strongly first order phase transition in the singlet fermionic dark matter model after LUX
• Dark Matter and Collider Studies in the Left-Right Symmetric Model with Vector-Like Leptons
• Constraints on Dark Matter Annihilation Cross Section in Scenarios of Brane-World and Quintessence
• Exploration of decaying dark matter in a left-right symmetric model
• Scalar Dark Matter Search at the LHC through FCNC Top Decay
• Searching for Dark Matter Signals in the Left-Right Symmetric Gauge Model with CP Symmetry
• P stabilizes dark matter and with CP can predict leptonic phases
• Higgsphobic and fermiophobic Z' as a single dark matter candidate
• Exploring the singlet scalar dark matter from direct detections and neutrino signals via its annihilation in the Sun
• Fourth generation Majorana neutrino, dark matter and Higgs physics
• Direct detection of dark matter with resonant annihilation
• Direct and indirect constraints on isospin-violating dark matter
• Dark matter conversion as a source of boost factor for explaining the cosmic ray positron and electron excesses
• Connecting the LHC diphoton excess to the Galatic center gamma-ray excess