Configuring the Long-Baseline Neutrino Experiment

Abstract

We study the neutrino oscillation physics performance of the Long-Baseline Neutrino Experiment (LBNE) in various configurations. In particular, we compare the case of a surface detector at the far site augmented by a near detector, to that with the far site detector placed deep underground but no near detector. In the latter case, information from atmospheric neutrino events is also utilized. For values of θ_{13} favored by reactor experiments and a 100 kt-yr exposure, we find roughly equivalent sensitivities to the neutrino mass hierarchy, the octant of θ_{23}, and to CP violation. We also find that as the exposure is increased, the near detector helps increase the sensitivity to CP violation substantially more than atmospheric neutrinos.

4 pages, 3 figures. Version to appear as a Rapid Communication in PRD

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• Improved Measurement of Electron Antineutrino Disappearance at Daya Bay
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• Influence of cross-sectional uncertainty on sensitivity studies of DUNE and T2HK experiments