Recent Results of Electron-Neutrino Appearance Measurement at NOvA

NOvA is a long-baseline accelerator-based neutrino oscillation experiment that is optimized for $ν_e$ measurements. It uses the upgraded NuMI beam from Fermilab and measures electron-neutrino appearance and muon-neutrino disappearance at its Far Detector in Ash River, Minnesota. The $ν_e$ appearance analysis at NOvA aims to resolve the neutrino mass hierarchy problem and to constrain the CP-violating phase. The first measurement of electron-neutrino appearance in NOvA based on its first year's data was produced in 2015, providing solid evidence of $ν_e$ oscillation with the NuMI beam line and some hints on mass-hierarchy and CP. This talk will discuss the second $ν_e$ oscillation analysis at NOvA, which is based on 2 years of data.

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