Abstract
NOνA experiment has reoptimized its event selection criteria in light of the recently measured moderately large value of θ13. We study the improvement in the sensitivity to the neutrino mass hierarchy and to leptonic CP violation due to these new features. Addition of 5 years of neutrino data from T2K to NOνA more than doubles the range of δCP for which the leptonic CP violation can be discovered, compared to stand alone NOνA. But for unfavorable values of δCP, the combination of NOνA and T2K are not enough to provide even a 90% C.L. hint of hierarchy discovery. Therefore, we further explore the improvement in the hierarchy and CP violation sensitivities due to the addition of a 10 kt liquid argon detector placed close to NOνA site. The capabilities of such a detector are equivalent to those of NOνA in all respects. We find that combined data from 10 kt liquid argon detector (3 years of ν + 3 years of ν¯ run), NOνA (6 years of ν + 6 years of ν¯ run) and T2K (5 years of ν run) can give a close to 2σ hint of hierarchy discovery for all values of δCP. With this combined data, we can achieve CP violation discovery at 95% C.L. for roughly 60% values of δCP.
Published Version
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