Neutrino Oscillations Results from the T2K Experiment
Résumé
The T2K (Tokai-to-Kamioka) experiment probes the mass differences and mixing of neutrinos through measurements of neutrinooscillations. A beam of muon neutrinos or muon antineutrinos is generated at the J-PARC protonaccelerator on the east coast of Japan, and the beam’s composition after oscillations is measured 295 km away in theSuper-Kamiokande detector. The transition of muon neutrinos and antineutrinos to other flavorsis governed by neutrino mixing andmass parameters, including the phase $\delta_{CP}$, which determines the amount of CP violation in neutrinomixing. Previous measurements from T2K have shown a strong constraint on $\delta_{CP}$ with the exclusionof a significant fraction of $\delta_{CP}$ values at 3$\sigma$ confidence. Here, we present the latest results from T2Kwith data collected through 2020.