Combined Analysis of Neutrino and Antineutrino Oscillations at T2K




Abe, K.
Hillairet, Anthony
Karlen, Dean
Myslik, Jordan William
T2K Collaboration

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Physical Review Letters


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.



Neutrino oscillations, CP violation, Neutrino detectors


Abe, K.; Amey, J.; Andreopoulos, C.; Antonova, M.; Aoki, S.; Ariga, A.; … & Żmuda, J. (2017). Combined analysis of neutrino and antineutrino oscillations at T2K. Physical Review Letters, 118(15), article 151801. DOI: 10.1103/PhysRevLett.118.151801