An Improved Measurement of Neutrino Oscillation Parameters by the NOvA Experiment
Creators: name: Acero, M. A.
name: Adamson, P.
name: Aliaga, L.
name: Anfimov, N.
name: Antoshkin, A.
name: Arrieta-Diaz, E.
name: Asquith, L.
name: Aurisano, A.
name: Back, A.
name: Backhouse, C.
name: Baird, M.
name: Balashov, N.
name: Baldi, P.
name: Bambah, B. A.
name: Bashar, S.
name: Bays, K.
name: Bernstein, R.
name: Bhatnagar, V.
name: Bhattarai, D.
name: Bhuyan, B.
name: Bian, J.
name: Blair, J.
name: Booth, A. C.
name: Bowles, R.
name: Bromberg, C.
name: Buchanan, N.
name: Butkevich, A.
name: Calvez, S.
name: Carroll, T. J.
name: Catano-Mur, E.
name: Choudhary, B. C.
name: Christensen, A.
name: Coan, T. E.
name: Colo, M.
name: Cremonesi, L.
name: Davies, G. S.
name: Derwent, P. F.
name: Ding, P.
name: Djurcic, Z.
name: Dolce, M.
name: Doyle, D.
name: Tonguino, D. Dueñas
name: Dukes, E. C.
name: Duyang, H.
name: Ehrlich, R.
name: Elkins, M.
name: Ewart, E.
name: Feldman, G. J.
name: Filip, P.
name: Franc, J.
name: Frank, M. J.
name: Gallagher, H. R.
name: Gandrajula, R.
name: Gao, F.
name: Giri, A.
name: Gomes, R. A.
name: Goodman, M. C.
name: Grichine, V.
name: Groh, M.
name: Group, R.
name: Guo, B.
name: Habig, A.
name: Hakl, F.
name: Hall, A.
name: Hartnell, J.
name: Hatcher, R.
name: Hausner, H.
name: He, M.
name: Heller, K.
name: Hewes, V.
name: Himmel, A.
name: Holin, A.
name: Huang, J.
name: Jargowsky, B.
name: Jarosz, J.
name: Jediny, F.
name: Johnson, C.
name: Judah, M.
name: Kakorin, I.
name: Kaplan, D. M.
name: Kalitkina, A.
name: Keloth, R.
name: Klimov, O.
name: Koerner, L. W.
name: Kolupaeva, L.
name: Kotelnikov, S.
name: Kralik, R.
name: Kullenberg, Ch.
name: Kubu, M.
name: Kumar, A.
name: Kuruppu, C. D.
name: Kus, V.
name: Lackey, T.
name: Lang, K.
name: Lasorak, P.
name: Lesmeister, J.
name: Lin, S.
name: Lister, A.
name: Liu, J.
name: Lokajicek, M.
name: Magill, S.
name: Plata, M. Manrique
name: Mann, W. A.
name: Marshak, M. L.
name: Martinez-Casales, M.
name: Matveev, V.
name: Mayes, B.
name: Méndez, D. P.
name: Messier, M. D.
name: Meyer, H.
name: Miao, T.
name: Miller, W. H.
name: Mishra, S. R.
name: Mislivec, A.
name: Mohanta, R.
name: Moren, A.
name: Morozova, A.
name: Mu, W.
name: Mualem, L.
name: Muether, M.
name: Mufson, S.
name: Mulder, K.
name: Naples, D.
name: Nayak, N.
name: Nelson, J. K.
name: Nichol, R.
name: Niner, E.
name: Norman, A.
name: Norrick, A.
name: Nosek, T.
name: Oh, H.
name: Olshevskiy, A.
name: Olson, T.
name: Ott, J.
name: Paley, J.
name: Patterson, R. B.
name: Pawloski, G.
name: Petrova, O.
name: Petti, R.
name: Phan, D. D.
name: Plunkett, R. K.
name: Porter, J. C. C.
name: Rafique, A.
name: Psihas, F.
name: Raj, V.
name: Rajaoalisoa, M.
name: Ramson, B.
name: Rebel, B.
name: Rojas, P.
name: Roy, P.
name: Ryabov, V.
name: Samoylov, O.
name: Sanchez, M. C.
name: Falero, S. Sánchez
name: Shanahan, P.
name: Sheshukov, A.
name: Singh, P.
name: Singh, V.
name: Smith, E.
name: Smolik, J.
name: Snopok, P.
name: Solomey, N.
name: Sousa, A.
name: Soustruznik, K.
name: Strait, M.
name: Suter, L.
name: Sutton, A.
name: Swain, S.
name: Sweeney, C.
name: Sztuc, A.
name: Talaga, R. L.
name: Oregui, B. Tapia
name: Tas, P.
name: Thakore, T.
name: Thayyullathil, R. B.
name: Thomas, J.
name: Tiras, E.
name: Tripathi, J.
name: Trokan-Tenorio, J.
name: Tsaris, A.
name: Torun, Y.
name: Urheim, J.
name: Vahle, P.
name: Vallari, Z.
name: Vasel, J.
name: Vokac, P.
name: Vrba, T.
name: Wallbank, M.
name: Warburton, T. K.
name: Wetstein, M.
name: Whittington, D.
name: Wickremasinghe, D. A.
name: Wojcicki, S. G.
name: Wolcott, J.
name: Wu, W.
name: Xiao, Y.
name: Dombara, A. Yallappa
name: Yankelevich, A.
name: Yonehara, K.
name: Yu, S.
name: Yu, Y.
name: Zadorozhnyy, S.
name: Zalesak, J.
name: Zhang, Y.
name: Zwaska, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present new $ν_μ\rightarrowν_e$, $ν_μ\rightarrowν_μ$, $\overlineν_μ\rightarrow\overlineν_e$, and $\overlineν_μ\rightarrow\overlineν_μ$ oscillation measurements by the NOvA experiment, with a 50% increase in neutrino-mode beam exposure over the previously reported results. The additional data, combined with previously published neutrino and antineutrino data, are all analyzed using improved techniques and simulations. A joint fit to the $ν_e$, $ν_μ$, $\overlineν_e$, and $\overlineν_μ$ candidate samples within the 3-flavor neutrino oscillation framework continues to yield a best-fit point in the normal mass ordering and the upper octant of the $θ_{23}$ mixing angle, with $Δm^{2}_{32} = (2.41\pm0.07)\times 10^{-3}$ eV$^2$ and $\sin^2θ_{23} = 0.57^{+0.03}_{-0.04}$. The data disfavor combinations of oscillation parameters that give rise to a large asymmetry in the rates of $ν_e$ and $\overlineν_e$ appearance. This includes values of the CP-violating phase in the vicinity of $δ_\text{CP} = π/2$ which are excluded by $&gt;3σ$ for the inverted mass ordering, and values around $δ_\text{CP} = 3π/2$ in the normal ordering which are disfavored at 2$σ$ confidence.
description: 11 pages, 6 figures. Supplementary material attached (7 figures)