At the International Conference on High Energy Physics (#ICHEP2026) held in Brazil, #NJU professor Jin Shan, on behalf of the BESIII Collaboration at the Beijing Electron Positron Collider, announced that after fifteen years of sustained research, the BESIII Collaboration identified that the dominant constituent of the X(2370) is a pseudoscalar glueball with spin-parity quantum numbers of 0⁻⁺.
The finding not only provides decisive validation of the theory of quantum chromodynamics (QCD), but also demonstrates the existence of an entirely new form of matter—matter composed purely of “force”.
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