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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Search for Electron Antineutrino Appearance in a Long-baseline Muon Antineutrino Beam
AU - T2K Collaboration
AU - Abe, K.
AU - Akutsu, R.
AU - Alt, C.
AU - Andreopoulos, C.
AU - Antonova, M.
AU - Aoki, S.
AU - Ariga, A.
AU - Asada, Y.
AU - Ashida, Y.
AU - Atkin, E. T.
AU - Awataguchi, Y.
AU - Ban, S.
AU - Barbi, M.
AU - Barker, G. J.
AU - Barr, G.
AU - Barry, C.
AU - Batkiewicz-Kwasniak, M.
AU - Beloshapkin, A.
AU - Bench, F.
AU - Berardi, V.
AU - Berkman, S.
AU - Berns, L.
AU - Bhadra, S.
AU - Bienstock, S.
AU - Blondel, A.
AU - Bolognesi, S.
AU - Bourguille, B.
AU - Brailsford, D.
AU - Bravar, A.
AU - Berguno, D. Bravo
AU - Bronner, C.
AU - Bubak, A.
AU - Avanzini, M. Buizza
AU - Calcutt, J.
AU - Campbell, T.
AU - Cao, S.
AU - Catanesi, M. G.
AU - Cervera, A.
AU - Chappell, A.
AU - Checchia, C.
AU - Dealtry, T.
AU - Doyle, T. A.
AU - Finch, A. J.
AU - Knox, A.
AU - Kormos, L. L.
AU - Lawe, M.
AU - Nowak, J.
AU - O'Keeffe, H. M.
AU - Ratoff, P. N.
AU - Walsh, J. G.
PY - 2020/4/21
Y1 - 2020/4/21
N2 - Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the PMNS mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40{\sigma} and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.
AB - Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the PMNS mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40{\sigma} and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.
KW - hep-ex
U2 - 10.1103/PhysRevLett.124.161802
DO - 10.1103/PhysRevLett.124.161802
M3 - Journal article
VL - 124
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
M1 - 161802
ER -