T2K recent results and future prospects

start date: 

Vendredi, mars 15, 2019 - 11:00




Ciro Riccio

Home Institute: 

University of Naples Federico II

organized by: 

T2K (Tokai to Kamioka) is a long-baseline neutrino oscillation experiment designed to measure (anti-)neutrino flavour oscillations using an off-axis (anti-)neutrino beam. After the measurement of a non-zero value for the last unknown mixing angle, theta13, and the most precise measurement of  theta23, T2K has started a campaign to measure CP violation in the leptonic sector taking data with both neutrino and an anti-neutrino beam. The most recent result obtained combining these two data sets showed that the 2 sigma confidence interval for the CP-violating phase does not include the CP-conserving cases (deltaCP=0,pi). One of the largest systematic uncertainties in neutrino oscillation analysis comes from present limited knowledge of (anti-)neutrino-nucleus interactions. Neutrino scattering understanding is crucial for the interpretation of neutrino oscillation since it affects background estimation and neutrino energy reconstruction. Thus, precise (anti-)neutrino-nucleus cross section measurements are vital for the present and future long-baseline neutrino oscillation experiments. The T2K Collaboration has a wide program of such measurements, which are manly performed at the near detector complex. In this presentation the recent T2K result on oscillation parameters and cross section are reported. In conclusion the future prospects in the field are discussed.