Kendall Mahn Elected as the new International co-spokesperson of T2K Collaboration, Replacing Federico Sanchez

The T2K collaboration has elected Kendall Mahn, a professor at Michigan State University, as its new International Co-Spokesperson, replacing Federico Sanchez from Geneva.  She has previously served in multiple roles on T2K, notably as T2K analysis co-coordinator. Kendall is excited to serve the T2K collaboration, as the collaboration makes use of the upgraded beamline, new…

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T2K physics coordinator Christophe Bronner received the Young Scientist Award of the Physical Society of Japan

He was recognized for his contributions to a recent T2K publications (Improved constraints on neutrino mixing from the T2K experiment with 3.13×1021 protons on target Phys. Rev. D 103, 112008(2021)). Christophe has made longstanding  contributions to T2K, including serving as one of the coordinators for the first joint collaborative analysis of T2K beam and SK…

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Ken Sakashita elected as Spokesperson of T2K Collaboration, Replacing A. Ichikawa

The T2K collaboration has elected Ken Sakashita, a researcher from KEK, as its new spokesperson, replacing A. Ichikawa from Tohoku University effective April 1st.  With his extensive experience in particle physics research, Sakashita is expected to bring valuable insights and contributions to the T2K collaboration during the next three years. 

T2K physics coordinator Sara Bolognesi received the EPS Emmy Noether Distinction for Women in Physics 2022

 During the  European Physical Society (EPS) Forum, held in Paris on June 2-3, 2022. While the short motivation of the prize talks about Sara contributions to the CMS experiment: “for her development of data analysis techniques that conclusively improved the sensitivity of the CERN-CMS experiment, thus allowing the discovery of the Higgs boson and the first…

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T2K Spring 2022 collaboration meeting

The T2K collaboration has recently held its first face-to-face meeting since the start of the pandemic. The meeting was held in a mixed way with two meeting centers: one at CERN (Switzerland) and another at JPARC (Japan). Even despite the split, the collaboration celebrated the possibility of resuming face-to-face discussions and meeting all the new…

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Watch a video about T2K

The T2K Experiment

T2K is a neutrino experiment designed to investigate how neutrinos change from one flavour to another as they travel (neutrino oscillations). An intense beam of muon neutrinos is generated at the J-PARC nuclear physics site on the East coast of Japan and directed across the country to the Super-Kamiokande neutrino detector in the mountains of western Japan. The beam is measured once before it leaves the J-PARC site, using the near detector ND280, and again at Super-K: the change in the measured intensity and composition of the beam is used to provide information on the properties of neutrinos.

Map showing J-PARC and Super-K

Science Goals of T2K

  • the search for CP violation in the neutrino sector
  • the discovery of νμ → νe ( i.e. the confirmation that θ13 > 0 )
  • precision measurements of oscillation parameters in νμ disappearance
  • a search for sterile components in νμ disappearance by observation of neutral-current events
  • world-leading contributions to neutrino-nucleus cross-section measurements