A chiral model for sterile neutrino

Abstract

A model, which extends the standard model with a new chiral U(1)${}^{\prime }$ gauge symmetry sector, for the eV-mass sterile neutrino is constructed. It is basically fixed by anomaly free conditions. The lightness of the sterile neutrino has a natural explanation. As a by product, this model provides a WIMP-like dark matter candidate.

arXiv comment18 pages, 3 figures, a comment on dark photon phenomenology is added, references updated, matched with published version

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