A recent study has established that neutrinos, the only elementary particles with an unknown mass, weigh no more than 0.45 electron volts (eV). This measurement, reported in Science on April 10, challenges understanding of particle mass mechanisms. Unlike other particles that gain mass through the Higgs boson, neutrinos' mass acquisition remains a mystery. Understanding their mass could provide insights into galaxy formation stemming from the Big Bang, offering a more significant perspective on the evolution of the universe.
Measuring the mass of neutrinos, which are the only elementary particles with unknown mass, could unlock secrets about how they acquire mass and their role in cosmic evolution.
This latest research establishes a new upper limit on the neutrino's mass at 0.45 electron volts, paving the way for deeper understandings regarding the origins of mass.
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