Neutrinos
Scientists at Fermilab's MicroBooNE experiment have determined that the long-hypothesized sterile neutrino does not exist, based on high-precision measurements of neutrino behavior. The findings, published in Nature, show neutrinos acting as expected without evidence of a fourth type, closing a decades-old theory. This result paves the way for new investigations and advanced experiments like DUNE.
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Physicists from the KATRIN collaboration have reported no evidence for a sterile neutrino in a precise analysis of tritium decay data. The findings, published in Nature, contradict earlier experimental claims and strengthen the case against a fourth neutrino type. The experiment, based in Germany, continues to gather more data for further tests.