Towards ultimate precision for neutrino oscillation study at T2K and Hyper-K

by Pingal Dasgupta

Wednesday Jun 17, 2026, 1:00 PM → 2:00 PM Europe/Madrid

IFAE Seminar Room (In-person)

The Charge-Parity (CP) violation in neutrino oscillations can potentially help us to understand the mystery of the observed matter-antimatter. asymmetry in the universe. The ongoing Tokai-to-Kamioka (T2K) experiment is one of the leading long-baseline accelerator-based experiments, and it has provided hints of CP phase violation in the leptonic sector. However, the current measurements of oscillation parameters are significantly limited by large systematic uncertainties introduced by the 'flux-folded' neutrino cross-section model. One such critical issue for the current cross-section modeling is its treatment of 'final state interaction,' which is insufficient from the theoretical standpoint. In this talk, I will address the recent key improvements in neutrino interaction modeling  and our ongoing works to tune these improved models by exploiting the capabilities of the upgraded ND280 detector. Through this approach, we aim to constrain the systematic uncertainties from interaction modeling in oscillation parameter measurements at both T2K and HK.