Experimental Highlights from Super-Kamiokande

Recent results from Super-Kamiokande are presented. Solar and atmospheric neutrinos have been studied in detail since 1996. The data of atmospheric neutrinos show strong up-down asymmetry and provide evidence for oscillation along their way through Earth. The selected data support oscillations of ν_μ → ν_τ and rule out the two-flavor ν_μ → ν_s oscillation. The underlying parameters for the ν_μ → ν_τ oscillations are determined to be Δ m² = 2.5^+1.5_-0.8 × 10^-3eV² and sin² 2θ > 0.89ata90 %C.L. Proton decays into various final states have been searched for but no evidence was found. Lower limits on the partial lifetimes are presented for major decay modes, especially those for p → e⁺ π⁰ and p -> bar {ν }K⁺ are 5.0 × 10³³ yr and 1.9 × 10³³ yr, respectively.