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Andreopoulos, C; Aoki, S; Autiero, D; Barry, C; Berkman, S; Boyd, S B; Bravar, A; Bronner, C; Campbell, T; Catanesi, M G; Christodoulou, G; Coleman, J; Collazuol, G; Dabrowska, A; Denner, P F; Dennis, S R; Densham, C; Di Luise, S; Dolan, S; Ereditato, A; Fiorentini, G A; Fukuda, D; Gonin, M; Hadley, D R; Hartz, M; Hasegawa, T; Hastings, N C; Hayato, Y; Hogan, M; Ichikawa, A K; Ikeda, M; Ishida, T; Jonsson, P; Jung, C K; Kakuno, H; Katori, T; Khabibullin, M; Kim, H; Kim, J; Knox, A; Kobayashi, T; Koch, L; Korzenev, A; Kudenko, Y; Kurjata, R; Kutter, T; Licciardi, M; Li, X; Lopez, J P; Lu, X; Malek, M; Martynenko, S; Ma, W Y; Mezzetto, M; Mijakowski, P; Mine, S; Miura, M; Moriyama, S; Nakamura, K; Nakamura, K D; Nakayama, S; Nantais, C; Nishimura, Y; Okumura, K; Okusawa, T; Ovsyannikova, T; Oyama, Y; Palladino, V; Payne, D; Petrov, Y; Pickering, L; Pinzon Guerra, E S; Posiadala-Zezula, M; Przewlocki, P; Ravonel, M; Rayner, M A; Reinherz-Aronis, E; Scholberg, K; Shah, R; Short, S; Sobczyk, J T; Sobel, H; Steinmann, J; Stewart, T; Stowell, P; Suvorov, S; Takeda, A; Thompson, L F; Toki, W; Tomura, T; Vallari, Z; Wachala, T; Wark, D; Weber, A; Wilkinson, C; Wilson, R J; Yanagisawa, C; Yokoyama, M; Zambelli, L; Zimmerman, E D
Physical review letters, 2017-Apr-14, Letnik: 118, Številka: 15Journal Article
T2K reports its first results in the search for CP violation in neutrino oscillations using appearance and disappearance channels for neutrino- and antineutrino-mode beams. The data include all runs from January 2010 to May 2016 and comprise 7.482×10^{20} protons on target in neutrino mode, which yielded in the far detector 32 e-like and 135 μ-like events, and 7.471×10^{20} protons on target in antineutrino mode, which yielded 4 e-like and 66 μ-like events. Reactor measurements of sin^{2}2θ_{13} have been used as an additional constraint. The one-dimensional confidence interval at 90% for the phase δ_{CP} spans the range (-3.13, -0.39) for normal mass ordering. The CP conservation hypothesis (δ_{CP}=0, π) is excluded at 90% C.L.
