Where did the antimatter go? Neutrinos shed promising new light

We live in a world of matter — because matter overtook antimatter, though they were both created in equal amounts when our universe began. Neutrinos and the associated antimatter particles, antineutrinos, are reported by the T2K collaboration to have a high likelihood of differing behaviour that offers a promising path to explaining the mysterious disappearance of antimatter. This work involved French scientists at the CNRS, École Polytechnique – IPP, Sorbonne Université and the CEA.