Daya Bay θ 13 Results 0 0.05 0.1 0.15 0.2 0.25 0.3 Daya Bay Double Chooz MINOS T2K Solar + KamLAND Original Flux Reevaluated Flux Normal Hierarchy Inverted Hierarchy sin 2 2θ13 Observe electron-antineutrino disappearance six 2.9 GWth reactors six 20-ton detectors: 3 near (~500m), 3 far (~1650m) 55 days of running antineutrino detectors near far