Sterile neutrino mixing now and in the next 10+ years

Abstract

Short-baseline neutrino oscillation anomalies indicate that there may be a sterile neutrino at the eV scale. We briefly review the theory of neutrino oscillations in the framework of 3+1 mixing with one sterile neutrino and the status of the global fit of short-baseline neutrino oscillation data. We also briefly discuss the sensitivities of future experiments.

Sterile searches with Liquid Argon at FNAL

“…Experimental observations of neutrino oscillations have so far established a consistent paradigm consisting of three neutrino flavors (ν e , ν µ , ν τ ) resulting from the mixing of three mass eigenstates (ν 1 , ν 2 , ν 3 ). Nonetheless, some experiments have reported short-baseline ν oscillation anomalies [1]. Each of these measurements lacks the significance to claim a discovery, but together they point toward the possible existence of non standard heavier sterile neutrino state(s) driving oscillations at small distances with ∆m 2 ≈ 1 eV 2 and relatively small mixing angles.…”