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Still no sign of hypothetical sterile-neutrino particle

A particle called the sterile neutrino could explain anomalies in high-energy physics. The range of conditions in which it could be found has become narrower.
By
  1. Patrick Huber

    1. Patrick Huber is at the Center for Neutrino Physics at Virginia Tech, Blacksburg, Virginia 24060, USA.

Neutrinos are fundamental particles that interact rarely with matter and are therefore notoriously difficult to detect. There are three known types of neutrino, but anomalous experimental results have led many physicists to propose the existence of a fourth, called the sterile neutrino. But now, writing in Nature, the KATRIN Collaboration1 and the MicroBooNE Collaboration2 report the results of sterile-neutrino searches from their respective experiments, which find no evidence of these hypothetical particles.

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Nature 648, 40-42 (2025)

doi: https://doi.org/10.1038/d41586-025-03726-w

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Competing Interests

The author declares no competing interests.

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