Current Status and Future Plans of T2K

TL;DR

T2K is a long-baseline neutrino experiment that studies neutrino oscillations, providing the first sensitivity to CP violation in the neutrino sector and precise measurements of oscillation parameters.

Contribution

This paper presents the first combined analysis of neutrino and antineutrino data from T2K, enhancing sensitivity to CP violation and improving parameter precision.

Findings

First sensitivity to neutrino-sector CP violation from T2K data.

Most precise T2K measurements of neutrino oscillation parameters.

Combined neutrino and antineutrino data analysis.

Abstract

T2K is a long-baseline neutrino oscillation experiment, in which a muon-neutrino beam is directed over a 295 km baseline from the J-PARC facility to the Super-Kamiokande detector. This allows neutrino oscillation to be studied in two channels: disappearance of muon neutrinos and appearance of electron neutrinos. T2K has collected data using both a neutrino-enhanced and an antineutrino-enhanced beam, and these proceedings present the first T2K results using both neutrino and antineutrino oscillation data. Combining the two data sets gives the first ever sensitivity to neutrino-sector CP violation from T2K data alone, as well as the most precise T2K measurement of the other neutrino oscillation parameters.