KPipe: a decisive test for muon neutrino disappearance

The short baseline neutrino oscillation experiment, KPipe, is designed to perform a sensitive search for muon neutrino disappearance in the current global fit allowed regions for sterile neutrinos. KPipe is to be located at the Material Life Science Experimental Facility at J-PARC: the world’s most intense source of 236~MeV, monoenergetic muon neutrinos. By measuring the ${\nu }_{\mu }$ charged current interaction rate along a 120~m long, 3~m diameter detector, KPipe can map out short baseline oscillations over an L/E of 0.14 to 0.64~m/MeV. Using a long, single detector to measure the ${\nu }_{\mu }$ interaction rate as a function of distance largely eliminates the systematic uncertainties associated with cross sections and fluxes. In this paper, we show that KPipe can cover the current global best fit to 5$\sigma$ after 3 years of running.