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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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