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    A new investigation of electron neutrino appearance oscillations with improved sensitivity in the MiniBooNE+ experiment 
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    A new investigation of electron neutrino appearance oscillations with improved sensitivity in the MiniBooNE+ experiment

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    arXiv (878.5Kb)
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    Abstract
    We propose the addition of scintillator to the existing MiniBooNE detector to allow a test of the neutral-current/charged-current (NC/CC) nature of the MiniBooNE low-energy excess. Scintillator will enable the reconstruction of 2.2 MeV $\gamma$s from neutron-capture on protons following neutrino interactions. Low-energy CC interactions where the oscillation excess is observed should have associated neutrons with less than a 10% probability. This is in contrast to the NC backgrounds that should have associated neutrons in approximately 50% of events. We will measure these neutron fractions with $\nu_\mu$ CC and NC events to eliminate that systematic uncertainty. This neutron-fraction measurement requires $6.5\times10^{20}$ protons on target delivered to MiniBooNE with scintillator added in order to increase the significance of an oscillation excess to over $5\sigma$. This new phase of MiniBooNE will also enable additional important studies such as the spin structure of nucleon ($\Delta s$) via NC elastic scattering, a low-energy measurement of the neutrino flux via $\numu ^{12}C \rightarrow \mu^{-} ^{12}N_\textrm{g.s.}$ scattering, and a test of the quasielastic assumption in neutrino energy reconstruction. These topics will yield important, highly-cited results over the next 5 years for a modest cost, and will help to train Ph.D. students and postdocs. This enterprise offers complementary information to that from the upcoming liquid Argon based MicroBooNE experiment. In addition, MicroBooNE is scheduled to receive neutrinos in early 2014, and there is minimal additional cost to also deliver beam to MiniBooNE.
    Authors
    Dharmapalan, R; Habib, S; Jiang, C; Stancu, I; Djurcic, Z; Johnson, RA; Wickremasinghe, A; Karagiorgi, G; Shaevitz, MH; Brown, BC
    URI
    http://qmro.qmul.ac.uk/xmlui/handle/123456789/11833
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    • Physics and Astronomy [1181]
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    arXiv record: http://arxiv.org/abs/1310.0076
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