First measurement of muon-neutrino disappearance in NOvA
  This paper reports the first measurement using the NOvA detectors of $\nu_\mu$ disappearance in a $\nu_\mu$ beam. The analysis uses a 14 kton-equivalent exposure of $2.74 \times 10^{20}$ protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure $\Delta m^{2}_{32}=(2.52^{+0.20}_{-0.18})\times 10^{-3}$ eV$^{2}$ and $\sin^2\theta_{23}$ in the range 0.38-0.65, both at the 68% confidence level, with two statistically-degenerate best fit points at $\sin^2\theta_{23} = $ 0.43 and 0.60. Results for the inverted mass hierarchy are also presented. 
P. Adamson, C. Ader, M. Andrews, N. Anfimov, I. Anghel, K. Arms, E.   Arrieta-Diaz, A. Aurisano, D. Ayres, C. Backhouse, M. ...
hep-ex physics.ins-det