Gauge $B-L$ Model with Residual $Z_3$ Symmetry

Abstract

We study a gauge $B-L$ extension of the standard model of quarks and leptons with unconventional charges for the singlet right-handed neutrinos, and extra singlet scalars, such that a residual $Z_3$ symmetry remains after the spontaneous breaking of $B-L$. We discuss the phenomenological consequences of this scenario, including the possibility of long-lived self-interacting dark matter and $Z^{\prime }$ collider signatures.

Comments: 11 pages, 2 figures, references added, fig.1 corrected