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This paper reports the first measurement using the NOvA detectors of ν μ disappearance in a ν μ beam. The analysis uses a 14 kton-equivalent exposure of 2.74 × 10 20 protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure Δm 2 32 ¼ ð2.52 þ0.20 −0.18 Þ × 10 −3 eV 2 and sin 2 θ 23 in the range 0.38–0.65, both at(More)
We report results from the first search for ν_{μ}→ν_{e} transitions by the NOvA experiment. In an exposure equivalent to 2.74×10^{20} protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99±0.11(syst) events based on the Near Detector measurement. A secondary analysis(More)
Convolutional neural networks (CNNs) have been widely applied in the computer vision community to solve complex problems in image recognition and analysis. We describe an application of the CNN technology to the problem of identifying particle interactions in sampling calorimeters used commonly in high energy physics and high energy neutrino physics in(More)
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