The European Physical Journal C 83, 782 (2023)

ISSN: 1434-6052, SCIE

Measurements of neutrino oscillation parameters from the T2K experiment using 3.6 × 10 21 protons on target

The T2K collaboration (K. Abe, ..., N. T. Hong Van, ...)

The T2K experiment presents new measure- ments of neutrino oscillation parameters using 19.7(16.3) × 10 20 protons on target (POT) in (anti-)neutrino mode at the far detector (FD). Compared to the previous analysis, an additional 4.7 × 10 20 POT neutrino data was collected at the FD. Significant improvements were made to the analy- sis methodology, with the near-detector analysis introduc- ing new selections and using more than double the data. Additionally, this is the first T2K oscillation analysis to use NA61/SHINE data on a replica of the T2K target to tune the neutrino flux model, and the neutrino interaction model was improved to include new nuclear effects and calculations. Frequentist and Bayesian analyses are presented, including

URL: https://doi.org/10.1140/epjc/s10052-023-11819-x