The physics impact of proton track identification in future megaton-scale water Cherenkov detectors

Details The physics impact of proton track identification in future megaton-scale water Cherenkov detectors The physics impact of proton track identification in future megaton-scale water Cherenkov detectors

2009-01-14

arxiv.org/abs/0901.1950v3

JHEP 0911:040,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 8 figures. Revised version with improved figures, text and structure, published in JHEP

Scientific paper

10.1088/1126-6708/2009/11/040

In this paper, we investigate the impact in future megaton-scale water Cherenkov detectors of identifying proton Cherenkov rings. We estimate the expected event rates for detected neutral current and charged current quasi-elastic neutrino interactions from atmospheric neutrinos in a megaton-scale Super-Kamiokande-like detector with both 40% and 20% photo-cathode coverage. With this sample we examine the prospects for measuring the neutrino oscillation pattern, and searching for sterile neutrinos. We also determine the size of selected charged current quasi-elastic samples in a 300-kton fiducial volume Super-Kamiokande-like detector from examples of both conventional super-beams and beta-beams proposed in the literature. With these samples, it is shown that full kinematic neutrino reconstruction using the outgoing proton can improve the reconstructed energy resolution, and give good neutrino versus anti-neutrino tagging capabilities, adding important capabilities to water Cherenkov detectors in future projects. We determine the beam parameters necessary to make use of this technique and present distributions of neutrino and anti-neutrino selection efficiencies.

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