
Evidence Grows for the Long-Sought Glueball
For decades scientists have hunted a glueball—an elusive particle made mostly of gluons. New BESIII data from 10 billion J/ψ decays and a recent arXiv preprint strengthen the case that X(2370) is a flavor-singlet glueball, matching key QCD predictions. Independent confirmation may take years, but the finding would be a major validation of how gluons bind quarks and the existence of glueballs.




