Dark Photon Dark Matter in the minimal $B-L$ Model

Abstract

The extension of the Standard model (SM) with three heavy right handed neutrinos, a complex scalar and the gauged $U(1{)}_{\mathrm{B}-\mathrm{L}}$ symmetry (the minimal $B-L$ model) is considered the most compelling minimal one: the presence and the out-of-equilibrium decay of the heavy right handed neutrinos can account for the small masses of the active neutrinos and the baryon asymmetry of the universe. A natural accompanying question concerns whether the minimal $B-L$ model can naturally accommodate an interesting dark matter (DM) candidate. We study the possibility where the current DM population is explained by the gauge boson of $U(1{)}_{\mathrm{B}-\mathrm{L}}$ symmetry. We discuss how the minimal set-up originally aimed at the seesaw mechanism and the leptogenesis is connected to conditions making the gauge boson promoted to a DM candidate.

arXiv comment10 pages, 3 figures, published version in JHEP

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Cited by in corpus (8)

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• Neutrino astronomy as a probe of physics beyond the Standard Model: decay of sub-MeV $B$-$L$ gauge boson dark matter
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• Confronting the Galactic 511 keV emission with $B-L$ gauge boson dark matter
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• Discrete $R$-symmetry, Various Energy Scales and Gravitational Waves