Department of Physics, Graduate School of Science
My major is experimental particle physics. In the early universe, matter and antimatter existed equal amounts. However, due to CP symmetry violation, where the physical behavior of matter and antimatter differs, the current universe is dominated by matter, with only a small amount of antimatter existing. The magnitude of CP symmetry violation predicted by known particle physics theories is insufficient to explain the current matter-dominated universe, suggesting the existence of new physics. Therefore, the KOTO experiment is searching for the rare decay of neutral kaons, KL->pi0 nu nubar, which is sensitive to new physics. We conduct our experiments at J-PARC, the world’s most intense proton accelerator facility, located in Ibaraki Prefecture.
Currently, the KOTOⅡexperiment is being planned as the next-generation experiment of the KOTO experiment. I am developing a calorimeter to measure the energy of particles for the KOTOⅡ experiment.