New (anti)neutrino results from the T2K experiment on CP violation in the lepton sector

by Davide Sgalaberna (Universite de Geneve (CH))

Tuesday 29 Nov 2016, 11:00 → 12:00 Europe/Zurich

500/1-001 - Main Auditorium (CERN)

T2K is a long-baseline neutrino experiment in which a muon neutrino beam produced by J-PARC in Tokai is sent 295 km across Japan to the Super-Kamiokande detector, to study neutrino oscillations via the disappearance of muon neutrinos and the appearance of electron neutrinos. Since the start of operations in 2010, T2K has conclusively observed muon neutrino to electron neutrino oscillations, opening the door to the observation of CP violation in neutrino mixing, and performed the most precise measurement of the muon neutrino disappearance parameters. In a joint analysis between these two modes, T2K placed its first constraints on the CP-violating phase delta. Starting in 2014, T2K has been running primarily with an antineutrino beam in order to study the corresponding antineutrino oscillations, resulting in leading measurements of the muon antineutrino disappearance parameters. The joint analysis of neutrino and antineutrino data indicates that CP-conserving parameters lie outside the 90% confidence interval. In this talk, we will present recently-updated (since ICHEP) neutrino oscillation results. Other physics topics such as neutrino-nucleus interaction studies and searches for non-standard neutrino properties will also be discussed. Finally, the future prospects of the experiment, including a potential extension of the T2K program, will be presented.

CERNEPSeminar29.11.2016.pdf

Recording

Seminar_T2K_CERN.pdf

Video preview