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  • 2305.09916v1

    Submitted manuscript, 464 KB, PDF document

  • NuMu_AntiNuMu_Disappearance_OA2020_paper_v6

    Accepted author manuscript, 376 KB, PDF document

  • PhysRevD.108.072011

    Final published version, 526 KB, PDF document

    Available under license: CC BY: Creative Commons Attribution 4.0 International License


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Updated T2K measurements of muon neutrino and antineutrino disappearance using 3.6 $\times$ 10$^{21}$ protons on target

Research output: Contribution to Journal/MagazineJournal articlepeer-review

  • T2K Collaboration
Article number072011
<mark>Journal publication date</mark>12/10/2023
<mark>Journal</mark>Physical Review D
Issue number7
Publication StatusPublished
<mark>Original language</mark>English


Muon neutrino and antineutrino disappearance probabilities are identical in the standard three-flavor neutrino oscillation framework, but CPT violation and non-standard interactions can violate this symmetry. In this work we report the measurements of $\sin^{2} \theta_{23}$ and $\Delta m_{32}^2$ independently for neutrinos and antineutrinos. The aforementioned symmetry violation would manifest as an inconsistency in the neutrino and antineutrino oscillation parameters. The analysis discussed here uses a total of 1.97$\times$10$^{21}$ and 1.63$\times$10$^{21}$ protons on target taken with a neutrino and antineutrino beam respectively, and benefits from improved flux and cross-section models, new near detector samples and more than double the data reducing the overall uncertainty of the result. No significant deviation is observed, consistent with the standard neutrino oscillation picture.