Adamson, P.Ader, C.Andrews, M.Anfimov, N.Anghel, I.Arms, K.Arrieta-Diaz, E.Aurisano, A.Ayres, D. S.Backhouse, C.Baird, M.Bambah, B. A.Bays, K.Bernstein, R.Betancourt, M.Bhatnagar, V.Bhuyan, B.Bian, J.Biery, K.Blackburn, T.Bocean, V.Bogert, D.Bolshakova, A.Bowden, M.Bower, C.Broemmelsiek, D.Bromberg, C.Brunetti, G.Bu, X.Butkevich, A.Capista, D.Catano-Mur, E.Chase, T. R.Childress, S.Choudhary, B. C.Chowdhury, B.Coan, T. E.Coelho, J. A. B.Colo, M.Cooper, J.Corwin, L.Cronin-Hennessy, D.Cunningham, A.Davies, G. S.Davies, J. P.Del Tutto, M.Derwent, P. F.Deepthi, K. N.Demuth, D.Desai, S.Deuerling, G.Devan, A.Dey, J.Dharmapalan, R.Ding, P.Dixon, S.Djurcic, Z.Dukes, E. C.Duyang, H.Ehrlich, R.Feldman, GaryFelt, NathanFenyves, E. J.Flumerfelt, E.Foulkes, S.Frank, M. J.Freeman, W.Gabrielyan, M.Gallagher, H. R.Gebhard, M.Ghosh, T.Gilbert, W.Giri, A.Goadhouse, S.Gomes, R. A.Goodenough, L.Goodman, M. C.Grichine, V.Grossman, N.Group, R.Grudzinski, J.Guarino, V.Guo, B.Habig, A.Handler, T.Hartnell, J.Hatcher, R.Hatzikoutelis, A.Heller, K.Howcroft, C.Huang, J.Huang, X.Hylen, J.Ishitsuka, M.Jediny, F.Jensen, C.Jensen, D.Johnson, C.Jostlein, H.Kafka, Gareth KristopherKamyshkov, Y.Kasahara, S. M. S.Kasetti, S.Kephart, K.Koizumi, G.Kotelnikov, S.Kourbanis, I.Krahn, Z.Kravtsov, V.Kreymer, A.Kulenberg, Ch.Kumar, A.Kutnink, T.Kwarciancy, R.Kwong, J.Lang, K.Lee, A.Lee, W. M.Lee, K.Lein, S.Liu, J.Lokajicek, M.Lozier, J.Lu, Q.Lucas, P.Luchuk, S.Lukens, P.Lukhanin, G.Magill, S.Maan, K.Mann, W. A.Marshak, M. L.Martens, M.Martincik, J.Mason, P.Matera, K.Mathis, M.Matveev, V.Mayer, N.McCluskey, E.Mehdiyev, R.Merritt, H.Messier, M. D.Meyer, H.Miao, T.Michael, D.Mikheyev, S. P.Miller, W. H.Mishra, S. R.Mohanta, R.Moren, A.Mualem, L.Muether, M.Mufson, S.Musser, J.Newman, H. B.Nelson, J. K.Niner, E.Norman, A.Nowak, J.Oksuzian, Y.Olshevskiy, A.Oliver, JohnOlson, T.Paley, J.Pandey, P.Para, A.Patterson, R. B.Pawloski, G.Pearson, N.Perevalov, D.Pershey, D.Peterson, E.Petti, R.Phan-Budd, S.Piccoli, L.Pla-Dalmau, A.Plunkett, R. K.Poling, R.Potukuchi, B.Psihas, F.Pushka, D.Qiu, X.Raddatz, N.Radovic, A.Rameika, R. A.Ray, R.Rebel, B.Rechenmacher, R.Reed, B.Reilly, R.Rocco, D.Rodkin, D.Ruddick, K.Rusack, R.Ryabov, V.Sachdev, K.Sahijpal, S.Sahoo, H.Samoylov, O.Sanchez, M. C.Saoulidou, N.Schlabach, P.Schneps, J.Schroeter, RaphaelSepulveda-Quiroz, J.Shanahan, P.Sherwood, B.Sheshukov, A.Singh, J.Singh, V.Smith, A.Smith, D.Smolik, J.Solomey, N.Sotnikov, A.Sousa, A.Soustruznik, K.Stenkin, Y.Strait, M.Suter, L.Talaga, R. L.Tamsett, M. C.Tariq, S.Tas, P.Tesarek, R. J.Thayyullathil, R. B.Thomsen, K.Tian, X.Tognini, S. C.Toner, RuthTrevor, J.Tzanakos, G.Urheim, J.Vahle, P.Valerio, L.Vinton, L.Vrba, T.Waldron, A. V.Wang, B.Wang, Z.Weber, A.Wehmann, A.Whittington, D.Wilcer, N.Wildberger, R.Wildman, D.Williams, K.Wojcicki, S. G.Wood, K.Xiao, M.Xin, T.Yadav, N.Yang, S.Zadorozhnyy, S.Zalesak, J.Zamorano, B.Zhao, A.Zirnstein, J.Zwaska, R.2016-09-132016Adamson, P., C. Ader, M. Andrews, N. Anfimov, I. Anghel, K. Arms, E. Arrieta-Diaz, et al. 2016. “First Measurement of Muon-Neutrino Disappearance in NOvA.” Phys. Rev. D 93 (5) (March 25). doi:10.1103/physrevd.93.051104.2470-0010http://nrs.harvard.edu/urn-3:HUL.InstRepos:28458012This paper reports the first measurement using the NOvA detectors of νμ disappearance in a νμ beam. The analysis uses a 14 kton-equivalent exposure of 2.74×1020 protons-on-target from the Fermilab NuMI beam. Assuming the normal neutrino mass hierarchy, we measure Δm232=(2.52+0.20−0.18)×10−3  eV2 and sin2θ23 in the range 0.38–0.65, both at the 68% confidence level, with two statistically degenerate best-fit points at sin2θ23=0.43 and 0.60. Results for the inverted mass hierarchy are also presented.en-USJournal Article2016-09-1310.1103/PhysRevD.93.051104