Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample



Abe, K, Abe, S, Akutsu, R, Alarakia-Charles, H, Hakim, YI Alj, Monsalve, S Alonso, Anthony, L, Aoki, S, Apte, KA, Arai, T
et al (show 388 more authors) (2025) Results from the T2K Experiment on Neutrino Mixing Including a New Far Detector μ-like Sample PHYSICAL REVIEW LETTERS, 135 (26). 261801-. ISSN 0031-9007, 1079-7114

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Abstract

We have made improved measurements of three-flavor neutrino mixing with 19.7(16.3)×1020 protons on target in (anti-)neutrino-enhanced beam modes. A new sample of muon-neutrino events with tagged pions has been added at the far detector, as well as new proton and photon-tagged samples at the near detector. Significant improvements have been made to the flux and neutrino interaction modeling. T2K data continue to prefer the normal mass ordering and upper octant of sin2θ23 with a near-maximal value of the charge-parity violating phase with best-fit values in the normal ordering of δCP=-2.18-0.47+1.22, sin2θ23=0.559-0.078+0.018 and Δm322=(+2.506-0.052+0.039)×10-3 eV2.

Item Type: Article
Uncontrolled Keywords: T2K Collaboration
Divisions: Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Faculty of Science & Engineering > School of Physical Sciences > Physics
Depositing User: Symplectic Admin
Date Deposited: 07 Jan 2026 08:30
Last Modified: 16 Jun 2026 07:11
DOI: 10.1103/gh5j-5cwv
Open Access URL: https://journals.aps.org/prl/abstract/10.1103/gh5j...
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3196489
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