Combined Analysis of Neutrino and Antineutrino Oscillations at T2K

Authors

K. Abe, The University of Tokyo
J. Amey, Imperial College London
C. Andreopoulos, University of Liverpool
M. Antonova, Institute for Nuclear Research of the Russian Academy of Sciences
S. Aoki, Kobe University
A. Ariga, University of Bern
D. Autiero, Université Claude Bernard Lyon 1
S. Ban, Kyoto University
M. Barbi, University of Regina
G. J. Barker, University of Warwick
G. Barr, University of Oxford
C. Barry, University of Liverpool
P. Bartet-Friburg, Laboratoire de Physique Nucléaire et de Hautes Energies
M. Batkiewicz, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
V. Berardi, Politecnico di Bari
S. Berkman, The University of British Columbia
S. Bhadra, York University
S. Bienstock, Laboratoire de Physique Nucléaire et de Hautes Energies
A. Blondel, Université de Genève
S. Bolognesi, Institut de Recherche sur les Lois Fondamentales de l'Univers
S. Bordoni, Institut de Física d'Altes Energies, Bellaterra
S. B. Boyd, University of Warwick
D. Brailsford, Lancaster University
A. Bravar, Université de Genève
C. Bronner, The University of Tokyo
M. Buizza Avanzini, Laboratoire Leprince-Ringuet
R. G. Calland, The University of Tokyo
T. Campbell, Colorado State University

Document Type

Article

Publication Date

4-10-2017

Abstract

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 7.482×1020 protons on target in neutrino mode, which yielded in the far detector 32 e-like and 135 μ-like events, and 7.471×1020 protons on target in antineutrino mode, which yielded 4 e-like and 66 μ-like events. Reactor measurements of sin22θ13 have been used as an additional constraint. The one-dimensional confidence interval at 90% for the phase δCP spans the range (-3.13, -0.39) for normal mass ordering. The CP conservation hypothesis (δCP=0, π) is excluded at 90% C.L.

Publication Source (Journal or Book title)

Physical Review Letters

Recommended Citation

Abe, K., Amey, J., Andreopoulos, C., Antonova, M., Aoki, S., Ariga, A., Autiero, D., Ban, S., Barbi, M., Barker, G., Barr, G., Barry, C., Bartet-Friburg, P., Batkiewicz, M., Berardi, V., Berkman, S., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., Bordoni, S., Boyd, S., Brailsford, D., Bravar, A., Bronner, C., Buizza Avanzini, M., Calland, R., & Campbell, T. (2017). Combined Analysis of Neutrino and Antineutrino Oscillations at T2K. Physical Review Letters, 118 (15) https://doi.org/10.1103/PhysRevLett.118.151801