Volume 473 - 12th Neutrino Oscillation Workshop (NOW2024) - Session 1: Standard three-neutrino oscillations
T2K and T2K+SK results
D.Β Barrow* and Β On behalf of the T2K collaboration
*: corresponding author
Full text: pdf
Published on: March 20, 2025
Abstract
Tokai-to-Kamioka (T2K) is a long-baseline neutrino oscillation experiment which utilizes a neutrino beam produced at the Japan Particle Accelerator Research Center. The composition and energy of the oscillated neutrino spectrum are measured using the Super-Kamiokande (SK) water Cherenkov detector located 295km downstream. Significant updates have been made to previous oscillation analyses, resulting in charge-parity (CP) violation being excluded at 90% confidence level. In addition, a T2K+SK joint analysis of beam and atmospheric neutrinos has been performed which strengthens the exclusion of CP-violation to 1.9𝜎. The Bayes factor for normal hierarchy
preference, as calculated by the joint analysis, is found to be 𝐡(𝑁𝐻/𝐼𝐻) = 8.98.
DOI: https://doi.org/10.22323/1.473.0001
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