Probes of Heavy Sterile Neutrinos

Abstract

We review probes of heavy sterile neutrinos, focusing on direct experimental searches and neutrinoless double beta decay. Working in a phenomenological parametrization, we emphasize the importance of the nature of sterile neutrinos in interpreting neutrinoless double beta decay searches. While current constraints on the active-sterile neutrino mixing are already stringent, we highlight planned future efforts that will probe regimes motivated by the lightness of active neutrinos.

Comments: Contribution to the 2022 EW session of the 56th Rencontres de Moriond, Author Accepted Manuscript