Physicists have discovered nothing! Well... something very close to nothing, anyway.
Piyare Jain shows detection of a particle called an axion, which is expected to have many very heavy friends like Higgs-Boson.
The axion has no charge, light mass & a short lifetime. Jain found the first signs of it in 1974 but has had to wait for “a heavy ion beam at very high energy” to be available for further testing.
Jain learned to use a special photo-detector from its inventor, British physicist Cecil Powell, in order to usefully detect the 10-13 second lifespan of these ephemeral particles where CERES at CERN (and others) had failed.
Axions decay into electron-positron pairs.
Jain rates his University at Buffalo discovery as “mission is complete” status.