Physicists have come back empty-handed after their search for “sterile neutrinos” fails

Physicists searching for evidence of a “light sterile neutrino”, a hypothetical particle that could give clues to cosmic puzzles such as the nature of dark matter and why the Universe is made of matter at all, have announced their hunt has come back empty-handed. The MicroBooNE experiment at Fermilab was designed to follow up on earlier hints of neutrinos behaving oddly, but the negative result deals a blow to the idea of such a new elementary particle. Neutrinos are lightweight, elusive subatomic particles, and current theories recognize three different types. In 1995, however, the Liquid Scintillator Neutrino Detector (LSND) experiment…

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