Mass of electron neutrino3/9/2023 Berkeley Lab’s KATRIN team is led by Alan Poon, deputy director of Berkeley Lab’s Nuclear Science Division. The KATRIN experiment is based at the Karlsruhe Institute of Technology in Germany and involves researchers at 20 research institutions around the globe. “Knowing the mass of the neutrino will allow scientists to answer fundamental questions in cosmology, astrophysics, and particle physics, such as how the universe evolved or what physics exist beyond the Standard Model” of particle physics, Robertson added. “These findings by the KATRIN collaboration reduce the previous mass range for the neutrino by a factor of two, place more stringent criteria on what the neutrino’s mass actually is, and provide a path forward to measure its value definitively,” said Hamish Robertson, a KATRIN scientist and professor emeritus of physics at the University of Washington. (Credit: Joachim Wolf/Karlsruhe Institute of Technology) (Click image for larger view.) Members of the KATRIN experiment pose in front of the spectrometer after it was installed at the Karlsruhe Institute of Technology. These inaugural results, obtained earlier this year by the Karlsruhe Tritium Neutrino (KATRIN) experiment, cut the mass range for the neutrino by more than half by lowering the upper limit of the neutrino’s mass from 2 eV to 1 eV. 13 that the rest mass of the neutrino is not larger than 1 electron volt, or eV. Note: This press release was adapted from an original release published by the University of Washington.Īn international team of scientists that includes researchers at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) has announced a breakthrough in its quest to measure the mass of the neutrino, one of the most abundant yet elusive elementary particles in our universe.Īt the 2019 Topics in Astroparticle and Underground Physics conference in Toyama, Japan, leaders from the KATRIN experiment reported Sept. (Credit: Karlsruhe Institute of Technology) A diagram of the layout and major features of the KATRIN experimental facility at the Karlsruhe Institute of Technology.
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