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First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA.

  • Author(s): Acero, MA;
  • Adamson, P;
  • Aliaga, L;
  • Alion, T;
  • Allakhverdian, V;
  • Altakarli, S;
  • Anfimov, N;
  • Antoshkin, A;
  • Aurisano, A;
  • Back, A;
  • Backhouse, C;
  • Baird, M;
  • Balashov, N;
  • Baldi, P;
  • Bambah, BA;
  • Bashar, S;
  • Bays, K;
  • Bending, S;
  • Bernstein, R;
  • Bhatnagar, V;
  • Bhuyan, B;
  • Bian, J;
  • Blackburn, T;
  • Blair, J;
  • Booth, AC;
  • Bour, P;
  • Bromberg, C;
  • Buchanan, N;
  • Butkevich, A;
  • Calvez, S;
  • Campbell, M;
  • Carroll, TJ;
  • Catano-Mur, E;
  • Cedeno, A;
  • Childress, S;
  • Choudhary, BC;
  • Chowdhury, B;
  • Coan, TE;
  • Colo, M;
  • Cooper, J;
  • Corwin, L;
  • Cremonesi, L;
  • Davies, GS;
  • Derwent, PF;
  • Ding, P;
  • Djurcic, Z;
  • Doyle, D;
  • Dukes, EC;
  • Duyang, H;
  • Edayath, S;
  • Ehrlich, R;
  • Elkins, M;
  • Feldman, GJ;
  • Filip, P;
  • Flanagan, W;
  • Frank, MJ;
  • Gallagher, HR;
  • Gandrajula, R;
  • Gao, F;
  • Germani, S;
  • Giri, A;
  • Gomes, RA;
  • Goodman, MC;
  • Grichine, V;
  • Groh, M;
  • Group, R;
  • Guo, B;
  • Habig, A;
  • Hakl, F;
  • Hartnell, J;
  • Hatcher, R;
  • Hatzikoutelis, A;
  • Heller, K;
  • Hewes, J;
  • Himmel, A;
  • Holin, A;
  • Howard, B;
  • Huang, J;
  • Hylen, J;
  • Jediny, F;
  • Johnson, C;
  • Judah, M;
  • Kakorin, I;
  • Kalra, D;
  • Kaplan, DM;
  • Keloth, R;
  • Klimov, O;
  • Koerner, LW;
  • Kolupaeva, L;
  • Kotelnikov, S;
  • Kourbanis, I;
  • Kreymer, A;
  • Kulenberg, Ch;
  • Kumar, A;
  • Kuruppu, CD;
  • Kus, V;
  • Lackey, T;
  • Lang, K;
  • Lin, S;
  • Lokajicek, M;
  • Lozier, J;
  • Luchuk, S;
  • Maan, K;
  • Magill, S;
  • Mann, WA;
  • Marshak, ML;
  • Martinez-Casales, M;
  • Matveev, V;
  • Méndez, DP;
  • Messier, MD;
  • Meyer, H;
  • Miao, T;
  • Miller, WH;
  • Mishra, SR;
  • Mislivec, A;
  • Mohanta, R;
  • Moren, A;
  • Mualem, L;
  • Muether, M;
  • Mufson, S;
  • Mulder, K;
  • Murphy, R;
  • Musser, J;
  • Naples, D;
  • Nayak, N;
  • Nelson, JK;
  • Nichol, R;
  • Nikseresht, G;
  • Niner, E;
  • Norman, A;
  • Nosek, T;
  • Olshevskiy, A;
  • Olson, T;
  • Paley, J;
  • Patterson, RB;
  • Pawloski, G;
  • Pershey, D;
  • Petrova, O;
  • Petti, R;
  • Phan, DD;
  • Plunkett, RK;
  • Potukuchi, B;
  • Principato, C;
  • Psihas, F;
  • Radovic, A;
  • Raj, V;
  • Rameika, RA;
  • Rebel, B;
  • Rojas, P;
  • Ryabov, V;
  • Samoylov, O;
  • Sanchez, MC;
  • Sánchez Falero, S;
  • Seong, IS;
  • Shanahan, P;
  • Sheshukov, A;
  • Singh, P;
  • Singh, V;
  • Smith, E;
  • Smolik, J;
  • Snopok, P;
  • Solomey, N;
  • Song, E;
  • Sousa, A;
  • Soustruznik, K;
  • Strait, M;
  • Suter, L;
  • Sutton, A;
  • Talaga, RL;
  • Tapia Oregui, B;
  • Tas, P;
  • Thayyullathil, RB;
  • Thomas, J;
  • Tiras, E;
  • Torbunov, D;
  • Tripathi, J;
  • Tsaris, A;
  • Torun, Y;
  • Urheim, J;
  • Vahle, P;
  • Vasel, J;
  • Vinton, L;
  • Vokac, P;
  • Vrba, T;
  • Wallbank, M;
  • Wang, B;
  • Warburton, TK;
  • Wetstein, M;
  • While, M;
  • Whittington, D;
  • Wojcicki, SG;
  • Wolcott, J;
  • Yadav, N;
  • Yallappa Dombara, A;
  • Yonehara, K;
  • Yu, S;
  • Zadorozhnyy, S;
  • Zalesak, J;
  • Zamorano, B;
  • Zwaska, R;
  • NOvA Collaboration
  • et al.
Abstract

The NOvA experiment has seen a 4.4σ signal of ν[over ¯]_{e} appearance in a 2 GeV ν[over ¯]_{μ} beam at a distance of 810 km. Using 12.33×10^{20} protons on target delivered to the Fermilab NuMI neutrino beamline, the experiment recorded 27 ν[over ¯]_{μ}→ν[over ¯]_{e} candidates with a background of 10.3 and 102 ν[over ¯]_{μ}→ν[over ¯]_{μ} candidates. This new antineutrino data are combined with neutrino data to measure the parameters |Δm_{32}^{2}|=2.48_{-0.06}^{+0.11}×10^{-3}  eV^{2}/c^{4} and sin^{2}θ_{23} in the ranges from (0.53-0.60) and (0.45-0.48) in the normal neutrino mass hierarchy. The data exclude most values near δ_{CP}=π/2 for the inverted mass hierarchy by more than 3σ and favor the normal neutrino mass hierarchy by 1.9σ and θ_{23} values in the upper octant by 1.6σ.

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