Speaker
Hong-Fei Zhang
(Guizhou University of Finance and Economics)
Description
We extend the nonrelativistic QCD framework to explore the nature of the newly discovered di-$J/\psi$ resonances. Assuming them as either molecule-like states or tetraquarks, we calculated their hadroproduction cross sections at the LHC. We find that the observed resonances are most likely spin-2 particles, and there should exist their spin-0 counterparts near these resonances. The ratio of production cross sections of the observed resonances to the latent spin-0 ones are also presented, which might help to distinguish molecule-like states from tetraquarks.
Primary author
Hong-Fei Zhang
(Guizhou University of Finance and Economics)
Co-authors
Yan-Qing Ma
(Peking University)
Prof.
文龙 桑
(西南大学)
