How it was shown experimentally that the J/Ψ particle is composed of charm and anti-charm quarks;

Because under the RHIC energy,the dominant charmonium production process is gluon fusion process,comparing our result with the future experiment data of PHENIX the gluon .

Recent experimental results obtained at Beijing Electron-proton Collider sensitivity level the crisply defined natrue of the hadronic decay puzzle in charmonium physics.

Study on screening of rennet in Quark procession;