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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Cited by in corpus (4)

• Constraints on Dark Matter Annihilation Cross Section in Scenarios of Brane-World and Quintessence
• Searching for Dark Matter Signals in the Left-Right Symmetric Gauge Model with CP Symmetry
• Higgsphobic and fermiophobic Z' as a single dark matter candidate
• Direct detection of dark matter with resonant annihilation