Results and Prospects of T2K

TL;DR

The T2K experiment investigates neutrino oscillations over a 295 km baseline, providing key measurements and constraints on neutrino parameters, and discusses recent analysis updates and future prospects.

Contribution

This paper presents the latest 2022 analysis results of T2K and discusses future experimental prospects.

Findings

Excluded CP conservation at >90% CL

Constrained $ig| riangle m_{32}^2 ig|$ and $ ext{sin}^2 heta_{23}$

Updated analysis methods and future plans

Abstract

T2K is a neutrino oscillation experiment with a 295 km long baseline between the far detector, Super-Kamiokande, and a suite of near detectors to study $\nu_\mu/\bar{\nu}_\mu$ disappearance and $\nu_e/\bar{\nu}_e$ appearance in a $\nu_\mu/\bar{\nu}_\mu$ neutrino beam produced at J-PARC. The experiment has excluded CP conservation in the three-neutrino oscillation model at $>90~\%$ CL and precisely constrained the parameters $\vert \Delta m_{32}^2 \vert$ and $\sin^2 \theta_{23}$. This paper reports on the novelties of the most up-to-date 2022 analysis and the near-future prospects of T2K.