Determining θ13 Using Nuclear Reactors

Besides being a fundamental parameter of Nature, the yet undetermined neutrino mixing angle θ₁₃ plays a key role in exploring CP symmetry in the lepton sector. By performing a new generation of disappearance experiments with a baseline between 1 and 2 km using low-energy electron antineutrinos from nuclear reactors, the mixing angle θ₁₃ could be measured to an order of magnitude better than the current limit. The merits and the challanges of this new round of experiments will be presented.