Obihiro University of Agriculture and Veterinary Medicine

The most fundamental particles among the currently identified components of the universe are called elementary particles. Electrons and photons are also elementary particles, and neutrinos are in this category. Although neutrinos are the second most abundant particle in the universe after light, they are difficult to detect and their nature as a particle is not yet precisely understood. I study neutrinos themselves as elementary particles, and various phenomena that can be understood by observing neutrinos.

• Search for neutrino-less double beta decay to verify the particle-antiparticle identity (Majorana) of neutrinos
  - Search for the signal in the world's highest sensitivity detector KamLAND
  - Development of a xenon bubble chamber detector for the future high sensitivity observations
• Geo-neutrino observations to measure geothermal heat sources
• Research on the timing of the disappearance of the Earth's oceans
• Development of ultra-low radiation measurement methods, ultra-low radiation environment construction, and cleaning techniques, related to the above.