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

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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.
Publisher
SPRINGER
Issue Date
2017-02
Language
English
Article Type
Article
Citation

JOURNAL OF HIGH ENERGY PHYSICS, no.2

ISSN
1029-8479
DOI
10.1007/JHEP02(2017)031
URI
http://hdl.handle.net/10203/226471
Appears in Collection
PH-Journal Papers(저널논문)
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