NUK - logo
E-viri
Recenzirano Odprti dostop
  • Adam, J; Akiri, T; Aoki, S; Ariga, T; Batkiewicz, M; Berger, B E; Berkman, S; Blondel, A; Bojechko, C; Brailsford, D; Bronner, C; Clifton, A; Coleman, S J; Cremonesi, L; Davis, S; De Rosa, G; Di Lodovico, F; Duffy, K; Dziewiecki, M; Emery, S; Finch, A J; Floetotto, L; Friend, M; Galymov, V; Giffin, S; Gudin, D; Hadley, D R; Hamilton, P; Hara, T; Hartz, M; Hillairet, A; Hirota, S; Ikeda, M; Ishida, T; Ishii, T; Ives, S J; Jacob, A; Johnson, R A; Jung, C K; Kanazawa, Y; Kilinski, A; Kim, J; Kobayashi, T; Kurjata, R; Laveder, M; Lawe, M; Litchfield, R P; Longhin, A; Macaire, M; Magaletti, L; Mathie, E L; McFarland, K S; Miller, C A; Murakami, A; Murphy, S; Myslik, J; Nakamura, K; Nirkko, M; Nishimura, Y; Okusawa, T; Oyama, Y; Payne, D; Petrov, Y; Pickard, L; Pinzon Guerra, E S; Plonski, P; Popov, B; Poutissou, J-M; Poutissou, R; Ratoff, P N; Ravonel, M; Ruterbories, D; Sakashita, K; Schoppmann, S; Sgalaberna, D; Smith, B; Smy, M; Sobel, H; Suzuki, Y; Tacik, R; Tanaka, M M; Thompson, L F; Tobayama, S; Tomura, T; Totsuka, Y; Tsukamoto, T; Uchida, Y; Ueno, K; Wascko, M O; Weber, A; Wilkinson, C; Wilson, J R; Yen, S; Yokoyama, M; Yu, M; Zalewska, A; Zambelli, L; Zaremba, K; Zimmerman, E D; Żmuda, J

    Physical review letters, 2014-May-09, Letnik: 112, Številka: 18
    Journal Article

    New data from the T2K neutrino oscillation experiment produce the most precise measurement of the neutrino mixing parameter θ23. Using an off-axis neutrino beam with a peak energy of 0.6 GeV and a data set corresponding to 6.57×10(20) protons on target, T2K has fit the energy-dependent νμ oscillation probability to determine oscillation parameters. The 68% confidence limit on sin(2)(θ23) is 0.514(-0.056)(+0.055) (0.511±0.055), assuming normal (inverted) mass hierarchy. The best-fit mass-squared splitting for normal hierarchy is Δm32(2)=(2.51±0.10)×10(-3)  eV(2)/c(4) (inverted hierarchy: Δm13(2)=(2.48±0.10)×10(-3)  eV(2)/c(4)). Adding a model of multinucleon interactions that affect neutrino energy reconstruction is found to produce only small biases in neutrino oscillation parameter extraction at current levels of statistical uncertainty.