Neutrino portal for vector dark matter

Abstract

In the Fermion Portal Vector Dark Matter (FPVDM) framework, we study how to connect the standard model with dark matter through neutrinos. In this framework the standard model is expanded with a SU(2)D × U(1)g Y D dark sector, where the SU(2)D gauge bosons are the dark matter candidates (specifically the V } components), this symmetry is broken by a dark scalar ΦD, giving mass to the gauge bosons and leaving a remanent Z2 symmetry that ensures the stability of the candidate. The interaction with the standard model is done through VL-fermions that couple to neutrinos through a Yukawa-like term. We consider two models, with one and two families of VL-fermions, for which we analyze the phenomenology using restrictions, relic density, and direct and indirect detection of dark matter.