Perturbative QCD Evidence for Spin-2 Particles in the Di-$J/\psi$ Resonances
High Energy Physics - Phenomenology
2025-05-20 v4 High Energy Physics - Experiment
Abstract
We extend the nonrelativistic QCD framework to explore the nature of the newly discovered di- 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.
Keywords
Cite
@article{arxiv.2009.08376,
title = {Perturbative QCD Evidence for Spin-2 Particles in the Di-$J/\psi$ Resonances},
author = {Hong-Fei Zhang and Yan-Qing Ma and Wen-Long Sang},
journal= {arXiv preprint arXiv:2009.08376},
year = {2025}
}