2023/08/11 by Guo, Xing-Dao, Chen, Dian-Yong, Li, Xue-Qian +2
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2308.06121
Motivated by the large branching fractions of J/ψ→ f0 (1710) ω/f0(1710) ϕ and the light exotic candidates, we find that there may exist molecular states composed of f0(1710) ω and f0 (1710) ϕ, which correspond to X(2440) and X(2680) observed in a few decades before. The branching fraction of X(2440) and X(2680) to various PV channels and KKω(ϕ) channels are estimated in the molecular scenario. In addition, the large branching fractions of J/ψ→ f0 (1710) ω/f0(1710) ϕ indicate the sizable molecular components in the J/ψ state. Thus, we consider the J/ψ as the supperposition of cc(1S), f0(1710) ω and f0 (1710) ϕ molecular states, and these molecular components have significant impact on the light hadron decays of J/ψ, which may shield light on the long standing ρ-π puzzle.