The NESSiE experiment is designed to perform an accurate measurement of muon-neutrino disappearance at small L/E, in order to severely constrain models with more than three-standard neutrinos, or even determine for the first time the presence of a ne
w kind of neutrino oscillation. NESSiE is a Short-Baseline experiment with magnetic spectrometers at two different sites on the FNAL-Booster neutrino beam. The experiment would allow to definitively solve the existing tension of the muon-neutrino disappearance result with the appearance and disappearance anomalies at eV mass scale, by spanning one more order of magnitude in the mixing angle between standard and sterile neutrinos. We demonstrate that this project constitutes the most robust and fast way to unambigously study the neutrino physics at that scales.
