Physics Spotlight  
Inside the MiniBooNE tank, photodetectors capture the light created when a neutrino interacts with an atomic nucleus.
Image: Reidar Hahn / Fermilab Inside the MiniBooNE tank, photodetectors capture the light created when a neutrino interacts with an atomic nucleus.
Image: Reidar Hahn / Fermilab

Evidence Found for a New Fundamental Particle

An experiment at the Fermi National Accelerator Laboratory near Chicago has detected far more electron neutrinos than predicted — a possible harbinger of a revolutionary new elementary particle called the sterile neutrino, though many physicists remain skeptical.

Natalie Wolchover | Quanta Magazine
June 1, 2018

Physicists are both thrilled and baffled by a new report from a neutrino experiment at Fermi National Accelerator Laboratory near Chicago. The MiniBooNE experiment has detected far more neutrinos of a particular type than expected, a finding that is most easily explained by the existence of a new elementary particle: a “sterile” neutrino that’s even stranger and more reclusive than the three known neutrino types. The result appears to confirm the anomalous results of a decades-old experiment that MiniBooNE was built specifically to double-check.
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