Right-handed neutrino dark matter under the B − L gauge interaction

Kunio Kaneta, Zhaofeng Kang, Hye Sung Lee

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26 Scopus citations

Abstract

We study the right-handed neutrino (RHN) dark matter candidate in the minimal U(1)B−L gauge extension of the standard model. The U(1)B−L gauge symmetry offers three RHNs which can address the origin of the neutrino mass, the relic dark matter, and the matter-antimatter asymmetry of the universe. The lightest among the three is taken as the dark matter candidate, which is under the B − L gauge interaction. We investigate various scenarios for this dark matter candidate with the correct relic density by means of the freeze-out or freeze-in mechanism. A viable RHN dark matter mass lies in a wide range including keV to TeV scale. We emphasize the sub-electroweak scale light B − L gauge boson case, and identify the parameter region motivated from the dark matter physics, which can be tested with the planned experiments including the CERN SHiP experiment.

Original languageEnglish (US)
Article number31
JournalJournal of High Energy Physics
Volume2017
Issue number2
DOIs
StatePublished - Feb 1 2017

Keywords

  • Beyond Standard Model
  • Cosmology of Theories beyond the SM
  • Gauge Symmetry

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