Volume 402 - The 22nd International Workshop on Neutrinos from Accelerators (NuFact2021) - All Sessions
Recent results from T2K
C. Riccio
Full text: pdf
Published on: March 31, 2022
Abstract
T2K (Tokai to Kamioka) is a Japan-based long-baseline neutrino oscillation experiment designed to measure (anti)neutrino flavor oscillations and taking data since 2010. Since 2014 has started a campaign to measure the phase $\delta_{CP}$, an unknown element of the Pontecorvo-Maki-Nakagawa-Sakata matrix, that can provide a test of the violation or conservation of the Charge-Parity (CP) symmetry in the lepton sector. To achieve this goal, T2K is taking data with a neutrino and antineutrino enhanced beam investigating asymmetries in the electron neutrino and antineutrino appearance probabilities. The most recent results showed that the CP-conserving cases are excluded at 90\% confidence level. One of the largest systematic uncertainties affecting neutrino oscillation measurements comes from limited knowledge of (anti)neutrino-nucleus interactions. The T2K experiment has a wide range of programs measuring neutrino interaction cross-section using detectors in its near detector complex. In this work an overview of the latest T2K neutrino oscillation and cross-section measurements are presented. Afterward, the intense program of upgrades, which promises to improve the sensitivities of the experiment, will be discussed.
DOI: https://doi.org/10.22323/1.402.0001
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