Atmospheric Neutrino Oscillation Analysis with Super-Kamiokande

The Super-Kamiokande (SK) experiment is a 50 kT water Cherenkov neutrino detector located in Japan, and has collected over 20 years of atmospheric neutrino data since its construction in 1996. The latest analysis of SK atmospheric neutrino data adds 30% exposure to the previous SK I-IV data set by expanding the fiducial volume and including an additional 461 days of new data taken after the major detector refurbishment in 2018 (SK V). This poster presents the updated results of neutrino oscillation parameter measurements and the updated methods of the latest analysis. We also present the SK results including external constraints from reactor neutrino experiments and a model of T2K long-baseline neutrino experiment.