Have physicists finally discovered glueballs? New evidence points to yes.
SMRTR summary
Physicists at the Beijing Spectrometer III experiment found strong new evidence of glueballs, particles made entirely of gluons with no quarks. Predicted by quantum theory, glueballs help explain how protons get their mass. This discovery could fill a key gap in our understanding of the Standard Model of particle physics.
SMRTR provides this summary for quick context. The original article belongs to Ars Technica.
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