Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2×10^21 Protons on Target
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Publication date
January 2018
DOI Publisher
American Physical Society (APS) Language
EnglishAbstract
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)×10^20 protons on target in the neutrino (antineutrino) mode, 89 ν_e candidates and seven anti-ν_e candidates are observed, while 67.5 and 9.0 are expected for δ_CP=0 and normal mass ordering. The obtained 2σ confidence interval for the CP-violating phase, δ_CP, does not include the CP-conserving cases (δ_CP=0, π). The best-fit values of other parameters are sin^2θ_23=0.526_-0.036^+0.032 and Δm_32^2=2.463_-0.070^+0.071×10^-3 eV^2/c^4
Extracted data
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