@article{1fb19b8c05284bdf964ee6759f549d98,
title = "Observation of electron neutrino appearance in a muon neutrino beam",
abstract = "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 expected background events. In the Pontecorvo-Maki-Nakagawa-Sakata mixing model, the electron neutrino appearance signal depends on several parameters including three mixing angles θ12, θ23, θ13, a mass difference Δm2 32and a CP violating phase δCP. In this neutrino oscillation scenario, assuming |Δm2 32| = 2.4 × 10-3eV2, sin2θ23= 0.5, and Δm2 32> 0 (Δm2 32< 0), a best-fit value of sin22θ13= 0.140+0.038 -0.032(0.170+0.045 -0.037) is obtained at δCP= 0. When combining the result with the current best knowledge of oscillation parameters including the world average value of θ13from reactor experiments, some values of δCPare disfavored at the 90% C.L.",
author = "{T2K Collaboration} and K. Abe and J. Adam and H. Aihara and T. Akiri and C. Andreopoulos and S. Aoki and A. Ariga and T. Ariga and S. Assylbekov and D. Autiero and M. Barbi and Barker, {G. J.} and G. Barr and M. Bass and M. Batkiewicz and F. Bay and Bentham, {S. W.} and V. Berardi and Berger, {B. E.} and S. Berkman and I. Bertram and S. Bhadra and Blaszczyk, {F. D.M.} and A. Blondel and C. Bojechko and S. Bordoni and Boyd, {S. B.} and D. Brailsford and A. Bravar and C. Bronner and N. Buchanan and Calland, {R. G.} and {Caravaca Rodriguez}, J. and Cartwright, {S. L.} and R. Castillo and Catanesi, {M. G.} and A. Cervera and D. Cherdack and G. Christodoulou and A. Clifton and J. Coleman and Coleman, {S. J.} and G. Collazuol and K. Connolly and L. Cremonesi and A. Dabrowska and I. Danko and R. Das and S. Davis and Furmanski, {A. P.}",
note = "Publisher Copyright: {\textcopyright} 2014 American Physical Society. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",
year = "2014",
month = feb,
day = "10",
doi = "10.1103/PhysRevLett.112.061802",
language = "English (US)",
volume = "112",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "6",
}