Speaker: Karsten Heeger (LBL)

Measuring $\theta_{13}$ with Reactors and the Search for Leptonic CP Violation

Results from non-accelerator neutrino oscillation experiments have provided strong evidence for the mixing of massive neutrinos. Recent experiments have measured the dominant mixing of neutrinos but the subdominant oscillation, the coupling of the electron neutrino flavor to the third mass eigenstate, has not been observed yet. Its corresponding mixing angle $\theta_{13}$ is critical for exploring CP violation searches in the lepton sector and may be discovered by next-generation reactor neutrino oscillation experiments. Together, reactor and accelerator experiments will help determine the yet unknown neutrino oscillation parameters and search for CP violating effects in the lepton sector . CP violation in the lepton sector and the observed neutrino mixing may lead to leptogenesis and account for the observed baryon asymmetry in the Universe. This talk will describe the physics potential of reactor and accelerator neutrino oscillation experiments and the path towards discovering CP violation in the lepton sector, including our recent studies towards a novel reactor neutrino oscillation experiment to measure $\theta_{13}$.