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Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2×1021 Protons on Target

ContributorsT2K Collaboration
Published inPhysical Review Letters, vol. 121, no. 17
Collection
  • Open Access - SCOAP3
Publication date2018
Abstract

The T2K experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and antineutrino beams. With an exposure of 14.7(7.6)×1020 protons on target in the neutrino (antineutrino) mode, 89 νe candidates and seven anti-νe candidates are observed, while 67.5 and 9.0 are expected for δCP=0 and normal mass ordering. The obtained 2σ confidence interval for the CP-violating phase, δCP, does not include the CP-conserving cases (δCP=0, π). The best-fit values of other parameters are sin2θ23=0.526−0.036+0.032 and Δm322=2.463−0.070+0.071×10−3 eV2/c4.

Citation (ISO format)
T2K Collaboration. Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2×1021 Protons on Target. In: Physical Review Letters, 2018, vol. 121, n° 17. doi: 10.1103/PhysRevLett.121.171802
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ISSN of the journal0031-9007
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