Sterile Neutrino Search Using China Advanced Research Reactor

We study the feasibility of a sterile neutrino search at the China Advanced Research Reactor by measuring ${\bar{\nu }}_e$ survival probability with a baseline of less than 15 m. Both hydrogen and deuteron have been considered as potential targets. The sensitivity to sterile-to-regular neutrino mixing is investigated under the “3(active)+1(sterile)” framework. We find that the mixing parameter ${\sin }^2(2{\theta }_{14})$ can be severely constrained by such measurement if the mass square difference $\mathrm{\Delta }{m}_{14}^2$ is of the order of $\sim$1 eV${}^2$.