Measuring Dirac CP-violating phase with intermediate energy beta beam facility

Abstract

Taking the established nonzero value of ${\theta }_{13}$, we study the possibility of extracting the Dirac CP-violating phase by a beta beam facility with a boost factor $100<\gamma <450$. We compare the performance of different setups with different baselines, boost factors and detector technologies. We find that an antineutrino beam from ${}^6$He decay with a baseline of $L=1300$ km has a very promising CP discovery potential using a 500 kton Water Cherenkov (WC) detector. Fortunately this baseline corresponds to the distance between FermiLAB to Sanford underground research facility in South Dakota.

14 pages, 7 figures

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• Precision measurements and tau neutrino physics in a future accelerator neutrino experiment