What's Going On In My Detector: Uncertainties In The Super-Kamiokande Detector For The T2K Experiment

The Tokai-to-Kamioka (T2K) Experiment is a long baseline neutrino oscillation experiment located in Japan. T2K searches for muon neutrino disappearance and electron neutrino appearance oscillations at its far detector, Super-Kamiokande (SK). When performing the neutrino oscillation analysis in T2K, the SK detector performance and reconstruction must be well understood in order to be certain of the number of muon and electron neutrino events observed. The T2K event reconstruction algorithm fiTQun does well to classify simulated electron and muon events in the detector, however differences in reconstruction performance between simulated and real data events can bias the T2K analysis results. In this seminar, the methods for estimating the T2K-SK detector reconstruction uncertainty will be discussed, including significant upgrades that include events with multiple visible particle final states in the T2K analysis for the first time.