The international KArlsruhe TRItium Neutrino Experiment (KATRIN) located at Karlsruhe Institute of Technology (KIT) has now been the first to constrain the mass of neutrinos to less 1 electron volt (eV) and, hence, has broken an important “barrier“ in neutrino physics. From the data recently published in Nature Physics, a new upper limit of 0.8 eV has been derived for the mass of the neutrino. These results obtained by means of a model-independent laboratory method allows KATRIN to constrain the mass of these “lightweights of the universe” with unprecedented precision. The publication is available here: DOI: 10.1038/s41567-021-01463-1
The results have also been presented in a public outreach event in German. The presentation is still accessible via the following website: https://www.katrin.kit.edu/leicht-leichter-neutrinos.php
The full press release is available here: Press Information of KIT