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Shiozawa Lab
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The lab uses Super-Kamiokande to study neutrinos and proton decay, working toward a grand unified theory of elementary particles.

AboutAbout the lab
Searching for a unified picture of elementary particles.
Shiozawa Lab studies elementary particle physics using Super-Kamiokande, a large underground experimental detector in Kamioka-cho, Hida City, Gifu Prefecture.
Super-Kamiokande is the world's largest neutrino and proton decay experiment, and it has produced results including the discovery of neutrino oscillation.
The lab is working on the construction of Hyper-Kamiokande, a next-generation detector with higher sensitivity, through international collaboration, with the aim of starting its experiments.
The lab aims to find evidence for a grand unified theory of elementary particles.
Key terms
- Neutrinos
- An elementary particle that has no electric charge and hardly interacts with other matter, which makes it difficult to observe
- Proton decay
- A phenomenon in which the proton, believed to be stable, decays. It is predicted by grand unified theories but has not yet been observed
- Grand unified theory
- A theory that attempts to bring the forces acting on elementary particles, as well as quarks and leptons, into a single framework
ResearchResearch themes
Using Super-Kamiokande, the lab continues to study the properties of neutrinos and to search for proton decay. It is also advancing the construction of the more sensitive Hyper-Kamiokande, aiming to find evidence for a grand unified theory of elementary particles.
*Illustrative imageNeutrinos and Proton Decay
Super-Kamiokande has produced results including the discovery of oscillations in atmospheric and solar neutrinos, and these results are thought to suggest the existence of a grand unified theory that gives rise to the tiny mass of neutrinos. To capture direct evidence of that theory, the lab continues to search for proton decay.
*Illustrative imageConstruction of Hyper-Kamiokande
The lab is working on the construction of Hyper-Kamiokande, a more sensitive detector, through international collaboration, with the aim of starting its experiments. By building the highest-performance detector in the world, it aims to find evidence for a grand unified theory of elementary particles.
MembersFaculty
- ProfessorMasato ShiozawaPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Super Kamiokande, 1 to 135th” Motokoka / CC BY-SA 4.0 (cropped)
- Neutrinos and Proton Decay: “Photomultiplier Tube (PMT)” Motokoka / CC BY-SA 4.0 (cropped)
- Construction of Hyper-Kamiokande: “Hyper-Kamiokande under constracting 02” 文部科学省 / CC BY 4.0 (cropped)
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