::: Research :::
| Research | I have been working on my research in Nucleon decay and Neutrino Group lead by Professor Chang Kee Jung at Department of Physics and Astronomy, Stony Brook University. My PhD thesis topic is "Tau Neutrino Appearance from the Atmospheric Neutrino Oscillations". The experiment I have been involved is called the "Super-Kamiokande", which is a 50kton of water tank with 11400 PMTs mounted on the wall and which is located in the Zinc mine in Kamioka, Gifu Japan. There are more than 120 physicists and engineers from US, Japan, Korea, Poland and China in the collaboration. My main goal is to try to find tau neutrino signal events in the atmospheric neutrino data collected by the detector. There have been |
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Neutrino
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Neutrinos are everywhere. They come from our bodies, nuclear reactors, natural radioactivities, the atmosphere of the Earth, the Sun, the Universe. They are fascinating elementary particles that we know the least about. Neutrinos are neutral and extremely light and don't interact with matters too much. In fact, they feel only the "weak force", which is one of four forces in the Universe. (Gravitational, Electromagnetic, Weak, and Strong forces). This makes very difficult to detect neutrinos. |
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Neutrino Oscillations
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There are three flavors of neutrinos, electron-type, muon-type, and tau-type. If neutrinos have mass, they can change their species from one to another. This phenomenon is called the "Neutrino Oscillation". |
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Tau Neutrinos
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In the atmosphere of the Earth, only electron neutrinos and muon neutrinos are produced in the decay of pions which are created when cosmic rays hit the atoms in the air. However, if neutrinos oscillate into another flavor i.e. tau neutrinos, we should be able to find tau neutrinos. |