T2K presents hint of CP violation by neutrinos

The international T2K Collaboration, where Queen Mary group plays significant roles, 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 their 2016 results, T2K has performed a new analysis of neutrino and antineutrino data using a new event reconstruction algorithm for interactions in the far detector, Super-Kamiokande. http://t2k-experiment.org/2017/08/t2k-2017-cpv/