A 30-Year Physics Mystery Takes a Sharp Turn: This Bizarre Particle Doesn’t Actually Exist

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A 30-Year Physics Mystery Takes a Sharp Turn: This Bizarre Particle Doesn’t Actually Exist



New results from the MicroBooNE experiment rule out the existence of a sterile neutrino, reshaping how scientists think about long-standing neutrino anomalies.

After many years of investigation, researchers working on the Micro Booster Neutrino Experiment (MicroBooNE) have concluded that a proposed particle known as the sterile neutrino does not exist. This particle had been widely discussed as a possible answer to unresolved problems in particle physics. Reporting their findings in the journal Nature, the team has significantly narrowed the list of explanations for one of the most persistent mysteries involving neutrinos.

“Neutrinos are elusive fundamental particles that are difficult to detect experimentally, yet are among the most abundant particles in the universe,” said UC Santa Barbara assistant physics professor David Caratelli, who was the physics coordinator for the experiment when this analysis was carried out.

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