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The T2K experiment observes indications of ν(μ) → ν(e) appearance in data accumulated with 1.43×10(20) protons on target. Six events pass all selection criteria at the far detector. In a three-flavor neutrino oscillation scenario with |Δm(23)(2)| = 2.4×10(-3)  eV(2), sin(2)2θ(23) = 1 and sin(2)2θ(13) = 0, the expected number of such events is 1.5±0.3(syst).(More)
The T2K experiment has observed electron neutrino appearance in a muon neutrino beam produced 295 km from the Super-Kamiokande detector with a peak energy of 0.6 GeV. A total of 28 electron neutrino events were detected with an energy distribution consistent with an appearance signal, corresponding to a significance of 7.3σ when compared to 4.92±0.55(More)
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%(More)
The T2K Collaboration reports a precision measurement of muon neutrino disappearance with an off-axis neutrino beam with a peak energy of 0.6 GeV. Near detector measurements are used to constrain the neutrino flux and cross section parameters. The Super-Kamiokande far detector, which is 295 km downstream of the neutrino production target, collected data(More)
K.Abe, J.Adam, H.Aihara, 23 T.Akiri, C.Andreopoulos, S.Aoki, A.Ariga, T.Ariga, S.Assylbekov, D.Autiero, M.Barbi, G.J.Barker, G.Barr, M.Bass, M.Batkiewicz, F.Bay, S.W.Bentham, V.Berardi, B.E.Berger, S. Berkman, I. Bertram, S. Bhadra, F.d.M. Blaszczyk, A.Blondel, C.Bojechko, S. Bordoni, S.B.Boyd, D.Brailsford, A.Bravar, C.Bronner, N.Buchanan, R.G. Calland,(More)
K.Abe, J.Adam, H.Aihara, 23 T.Akiri, C.Andreopoulos, S.Aoki, A.Ariga, T.Ariga, S.Assylbekov, D.Autiero, M.Barbi, G.J.Barker, G.Barr, M.Bass, M.Batkiewicz, F.Bay, S.W.Bentham, V.Berardi, B.E.Berger, S. Berkman, I. Bertram, S. Bhadra, F.d.M.Blaszczyk, A.Blondel, C.Bojechko, S. Bordoni, S.B.Boyd, D.Brailsford, A.Bravar, C.Bronner, N.Buchanan, R.G.Calland,(More)
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