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Update on the T2K Experiment

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Date and time Sep 20, 2016
from 11:10 AM to 12:00 PM
Location MP 606
Host Hiro Tanaka

Arturo Fiorentino

York University

T2K (Tokai to Kamioka) is a long-baseline neutrino oscillation experiment with a high-intensity beam of muon neutrinos produced at the Japan Proton Accelerator Research Complex (J-PARC). The Super-Kamiokande underground water Cherenkov detector, 295 km away, serves as the far detector and measures the oscillated neutrino flux. A near detector complex 280 m away from the neutrino source provides information about the un-oscillated neutrino flux and interaction cross-sections.

Since the start of operation in 2010, T2K conclusively observed electron neutrino appearance in a muon neutrino beam, performed the most precise measurement of muon neutrino disappearance parameters and placed its first constraints on the CP-violating phase. Starting in the summer of 2014, T2K started to take data using a muon anti-neutrino beam resulting in the first measurement of muon anti-neutrino disappearance parameters.

In this talk, I will present updated results on the neutrino mixing parameters from a joint analysis between neutrino and antineutrino data. Future prospects, including the potential extension of the T2K program T2K-phase II and the next generation underground Cherenkov detector Hyper-Kamiokande, will also be presented.

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