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

Understand

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.