【PRESS RELEASE】T2K Results Restrict Possible Values of Neutrino CP Phase - Published in Nature, the results are a major step forward in the study of difference between matter and antimatter -

The T2K Collaboration has published new results showing the strongest constraint yet on the parameter that governs the breaking of the symmetry between matter and antimatter in neutrino oscillations. Using beams of muon neutrinos and muon antineutrinos, T2K has studied how these particles and antiparticles transition into electron neutrinos and electron antineutrinos, respectively. The parameter governing the matter/antimatter symmetry breaking in neutrino oscillation, called δcp phase, can take

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First look at antineutrino appearance from T2K

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The T2K (Tokai-to-Kamioka) experiment in Japan has observed three electron antineutrino candidate events in a muon antineutrino beam. T2K creates and monitors a muon antineutrino beam at the J-PARC facility in Tokai village on the east coast of Japan, and sends it 295 km west to the Super-Kamiokande detector underneath Mt. Ikeno near Toyama, which was built, and is operated, by ICRR. This is the first antineutrino appearance search by

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First result of the muon antineutrino disappearance by T2K

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On May 15th, 2015, Dr. Asher C. Kaboth, from Imperial College London, presented “The first result of the muon antineutrino disappearance by T2K” at a KEK IPNS Physics Seminar, which was held at Tokai Campus. He showed the first T2K muon-antineutrino disappearance measurment results and a comparison between the new result and past results obtained using a neutrino beam. The T2K experiment observed electron-neutrino appearance from a muon-neutrino beam in

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