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Publication of KATRIN results – Neutrinos Are Lighter than 0.8 Electron Volts

Credits: Image: Photography: Luca Zanier; Artwork: Leonard Köllenberger, Karlsruhe Institute of Technology. Cover Design: Amie Fernandez, Nature Physics

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:

The full press release is available here: Press Information of KIT