Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN
physical review letters2019Vol. 123pp. 221802-
161
2019physicalimproved
Abstract
The Karlsruhe Tritium Neutrino Experiment (KATRIN) shows that the mass of the neutrino is no larger than about 1 eV---cutting in half the existing limit derived from similar experiments.