Exploring Leptonic CP Violation by Reactor and Neutrino Superbeam Experiments

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  • 29 September 2003
Abstract
We point out the possibility that reactor measurement of theta_{13}, when combined with high-statistics nu_e appearance accelerator experiments, can detect leptonic CP violation. Our proposal is based on a careful statistical analysis under reasonable assumptions on systematic errors, assuming 2 years running of the neutrino mode J-PARC -> Hyper-Kamiokande experiment and a few years running of a reactor experiment with 100 ton detectors at the Kashiwazaki-Kariwa nuclear power plant. We show that the method for detecting CP violation works without knowing the sign of Delta m^2_{31}, and is not confused by the intrinsic parameter degeneracy.

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