News

T2K releases its first measurement of muon-antineutrino disappearance

May 19, 2015

T2K released its first measurement of muon-antineutrino disappearance in a seminar at the KEK High Energy Accelerator Research Organization on 18th May 2015. This result has been obtained from data taken from May 2014 – March 2015. During this time, T2K has been running with a beam composed mostly of muon antineutrinos, and 59.8 events…

Read More

J-PARC delivers 1×1021 protons on target to T2K

March 26, 2015

Today (March 26, 2015) at 15:25 the J-PARC accelerator achieved the milestone of delivering 1×1021 protons on target to T2K. Many thanks are due to the J-PARC directorate and the staff members for their outstanding work to make this possible ! The protons are produced by J-PARC in Tokai on the east coast of Japan.…

Read More

Takashi Kobayashi is awarded the Yomiuri Gold Medal

March 25, 2015

Takashi Kobayashi has been awarded the Yomiuri Gold Medal for his contributions to the discovery of oscillations from muon neutrinos to electron neutrinos. He is a professor of physics at the High Energy Accelerator Research Organization (KEK) and is head of the Particle and Nuclear Physics Division at the Japan Proton Accelerator Research Complex (J-PARC).…

Read More

Takashi Kobayashi, Tsuyoshi Nakaya and Masato Shiozawa are awarded the Yoji Totsuka prize

March 25, 2015

Takashi Kobayashi, Tsuyoshi Nakaya and Masato Shiozawa have been awarded the Yoji Totsuka Prize for their contributions to discovering oscillations from muon neutrinos to electron neutrinos. Takashi Kobayashi is a professor of physics at the High Energy Accelerator Research Organization (KEK) and is head of the Particle and Nuclear Physics Division at the Japan Proton…

Read More

Takashi Kobayashi and Tsuyoshi Nakaya are awarded the Nishina Memorial Prize

November 24, 2014

Takashi Kobayashi and Tsuyoshi Nakaya have been awarded the Nishina Memorial Prize for 2014 for their contributions to discovering oscillations from muon neutrinos to electron neutrinos. Takashi Kobayashi is a professor of physics at the High Energy Accelerator Research Organization (KEK) and is a Spokesperson for T2K. Tsuyoshi Nakaya is a professor of physics at…

Read More

T2K sees its first event in antineutrino beam mode

June 13, 2014

T2K resumed data taking on 26 May 2014 after a 1-year shutdown caused by the hadron hall radiation accident. Many thanks are due to the J-PARC directorate and the staff members for their incredible effort over many months to make this possible! During the beamline commissioning, the first antineutrino beam at J-PARC (and the first…

Read More

T2K Beam Group wins 2013 Suwa Prize

December 25, 2013

The T2K Neutrino Beam group was awarded the 2013 Suwa Prize by the FAS (Foundation for High Energy Accelerator Science), for their contribution to the discovery of electron neutrino appearance by creating and operating the highest intensity neutrino beam facility. The Beam Group is responsible for design, operation, and maintenance of  equipment that monitors the…

Read More

T2K member Atsuko Ichikawa wins the first Yuasa Prize

December 25, 2013

Prof. Atsuko Ichikawa (Kyoto University) was named the first recipient of the Yuasa Prize, for women making exceptional research achievements in science. The prize commemorates Dr. Toshiko Yuasa (1909-1980), who made significant contributions to physics while working in France at the College de France and Institut de Physique Nucléaire d’Orsay. Prof. Ichikawa was awarded the prize…

Read More

T2K submits paper that conclusively shows muon neutrinos transform to electron neutrinos

December 3, 2013

The T2K experiment has submitted a paper to Physical Review Letters, reporting the definitive observation of electron neutrino appearance in a high-purity muon neutrino beam that travels 295 km, from the J-PARC accelerator complex to the Super-Kamiokande underground neutrino detector. A total of 28 electron neutrino events were detected, compared to 4.92 ± 0.55 background…

Read More

New results from T2K conclusively show muon neutrinos transform to electron neutrinos

July 19, 2013

Electron-neutrino candidate in Super Kamiokande

Today at the European Physical Society meeting in Stockholm, the international T2K collaboration announced a definitive observation of muon neutrino to electron neutrino transformation. In 2011, the collaboration announced the first indication of this process, which was then a new type of neutrino oscillation; now, with 3.5 times more data, this transformation is firmly established…

Read more