Two physicists have won the Nobel Prize for Physics for their work to discover that neutrinos have a mass — one of the few things that we know about the elusive particles.
Japanese Takaaki Kajita and Canadian Arthur B. McDonald were given the award today “for the discovery of neutrino oscillations, which shows that neutrinos have mass”.
The award was given to the scientists “for their key contributions to the experiments which demonstrated that neutrinos change identities”, the committee said. “This metamorphosis requires that neutrinos have mass. The discovery has changed our understanding of the innermost workings of matter and can prove crucial to our view of the universe.”
Scientists know very little about neutrinos and the fact that they hardly ever interact makes them very difficult to study. For half a century scientists thought that they had no mass — but the discovery at the turn of the millennium that they actually have mass led to the work that was recognised by 2015’s prize.Reuse content