Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2 x 10(21) Protons on Target



Abe, K, Akutsu, R, Amey, J, Andreopoulos, C ORCID: 0000-0003-2020-8215, Anthony, L, Antonova, M, Aoki, S, Ariga, A, Ashida, Y, Azuma, Y
et al (show 313 more authors) (2018) Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2 x 10(21) Protons on Target. PHYSICAL REVIEW LETTERS, 121 (17). 171802-.

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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)×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^{2}θ_{23}=0.526_{-0.036}^{+0.032} and Δm_{32}^{2}=2.463_{-0.070}^{+0.071}×10^{-3}  eV^{2}/c^{4}.

Item Type: Article
Additional Information: 9 pages, 6 figures
Uncontrolled Keywords: T2K Collaboration
Depositing User: Symplectic Admin
Date Deposited: 05 Nov 2018 09:57
Last Modified: 19 Jan 2023 01:13
DOI: 10.1103/PhysRevLett.121.171802
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3028313