The mysteries of the universe, matter,
and the stars revealed by Neutrino

Together with about 40 universities
and research institutes around the world,
we are working to elucidate the nature of neutrinos
and the mysteries of elementary particles and the universe.



  • #Proton decay
  • #Nobel Prize
  • #Neutrino oscillation
  • #Supernova relic neutrino
  • #Solar neutrino
  • #T2K experiment
  • #Kamiokande chronology
  • #Hyper-Kamiokande
  • #Cherenkov light
  • #How to observe

Proton decay

Protons are contained in the nucleus of an atom, and they are believed to be stable in the standard theory of particle physics. Proton decay is a phenomenon that the proton will break down spontaneously into other particles.
Proton decay | Super-Kamiokande Official homepage

Nobel Prize

Dr. Takaaki Kajita was awarded the Nobel Prize in Physics in 2015 through his research at Super-Kamiokande.
Nobel Prize | Super-Kamiokande Official homepage

Neutrino oscillation

Dr. Takaaki Kajita was awarded the Nobel Prize in Physics for this discovery. It does not mean that neutrinos actually oscillate, but rather that they “transform into different flavors as they oscillate.”
Neutrino oscillation | Super-Kamiokande Official homepage

Supernova relic neutrino

The neutrinos emitted from all supernovae from the begging of the universe have diffused the universe. Aiming for the world’s first detection, SK started the new observation in 2020.
Supernova relic neutrino | Super-Kamiokande Official homepage

Solar neutrino

Neutrinos coming from the sun. While light born at the sun’s center takes about 100,000 years to reach the surface of the sun, neutrinos reach the earth in about eight minutes.
Solar neutrino | Super-Kamiokande Official homepage

T2K experiment

The world’s most intense neutrino beam, produced at the Japan Proton Accelerator Research Complex (J-PARC) in Tokai-mura, Ibaraki Prefecture, is detected by Super-Kamiokande, 295 km away.
T2K experiment | Super-Kamiokande Official homepage

Kamiokande chronology

The Kamiokande series has produced very important results in neutrino research.
Kamiokande chronology | Super-Kamiokande Official homepage


Next-generation detector currently under construction. It is planned to start observation in 2027.
Hyper-Kamiokande | Hyper-Kamiokande Official homepage

Cherenkov light

A light emitted when charged particles struck by neutrinos travel faster than light in water.
Cherenkov light | Super-Kamiokande Official homepage

How to observe

The Cherenkov light emitted by charged particles struck by neutrinos in rare collisions (interactions) with matter is observed by photomultiplier tubes installed on the tank walls.
How to observe | Super-Kamiokande Official homepage