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.

Combined Analysis of Neutrino and Antineutrino Oscillations at T2K / Abe, K., Amey, J., Andreopoulos, C., Antonova, M., Aoki, S., Ariga, A., Autiero, D., Ban, S., Barbi, M., Barker, G.J., Barr, G., Barry, C., Bartet Friburg, P., Batkiewicz, M., Berardi, V., Berkman, S., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 118:15(2017). [10.1103/PhysRevLett.118.151801]

Combined Analysis of Neutrino and Antineutrino Oscillations at T2K

BERARDI, Vincenzo;MAGALETTI, Lorenzo;
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.
2017
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.151801
Combined Analysis of Neutrino and Antineutrino Oscillations at T2K / Abe, K., Amey, J., Andreopoulos, C., Antonova, M., Aoki, S., Ariga, A., Autiero, D., Ban, S., Barbi, M., Barker, G.J., Barr, G., Barry, C., Bartet Friburg, P., Batkiewicz, M., Berardi, V., Berkman, S., Bhadra, S., Bienstock, S., Blondel, A., Bolognesi, S., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 118:15(2017). [10.1103/PhysRevLett.118.151801]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/110541
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