Press Releases

“Rival” neutrino experiments NOvA and T2K publish first joint analysis

October 23, 2025:

The T2K experiment in Japan and the NOvA experiment in the United States conducted a joint analysis and published their first results in the journal Nature. Both are long-baseline neutrino oscillation experiments using accelerators, and by leveraging their different baselines and energy conditions, they achieved precision measurements of neutrino oscillations. As a result, they succeeded…

Read More

T2K Experiment enters a new phase with significantly improved sensitivity for its world leading neutrino oscillation research

August 12, 2024:

The T2K Collaboration has started data taking using the enhanced neutrino beam and new neutrino near-detectors from December 2023. The KEK/J-PARC center has upgraded the main ring accelerator and the neutrino beamline to increase the beam power. T2K has also upgraded its neutrino production instruments. The stable operation of neutrino beam has been successfully achieved…

Read More

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

November 11, 2023:

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…

Read More

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

October 30, 2023:

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…

Read More

T2K Results Restrict Possible Values of Neutrino CP Phase

April 16, 2020:

– Published in Nature, the results are a major step forward in the study of difference between matter and antimatter https://www.nature.com/articles/s41586-020-2177-0 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…

Read More

T2K presents hint of CP violation by neutrinos

August 4, 2017:

The international T2K Collaboration strengthened its previous hint that the symmetry between matter and antimatter may be violated for neutrino oscillation.  A preliminary analysis of T2K’s latest data rejects the hypothesis that neutrinos and antineutrinos oscillate with the same probability at 95% confidence (2σ) level. With nearly twice the neutrino data in 2017 compared to…

Read More

First T2K CP violation search published

June 1, 2017:

T2K’s first search for violation of charge-parity symmetry (CP violation) was published in Physical Review Letters as an Editors Suggestion in the April 14 edition.  This is the first result from T2K that simultaneously analyses both neutrino and antineutrino data sets. The international  T2K (Tokai-to-Kamioka) collaboration searches for CP violation with both neutrino and antineutrino beams,…

Read More

T2K CP violation search results presented at ICHEP 2016

August 6, 2016:

The international T2K Collaboration announced today their findings on the symmetry between neutrino and antineutrino oscillation. With nearly twice the antineutrino data in 2016 compared to their initial results using antineutrino data in 2015, T2K has performed a new analysis of all data, fitting both neutrino and antineutrino modes simultaneously. Today’s announcement was made by…

Read More