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

Abstract

Taking the established nonzero value of θ13\theta_{13}, we study the possibility of extracting the Dirac CP-violating phase by a beta beam facility with a boost factor 100<γ<450100<\gamma<450. We compare the performance of different setups with different baselines, boost factors and detector technologies. We find that an antineutrino beam from 6^6He decay with a baseline of L=1300L=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.Comment: 14 pages, 7 figure

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