Molecular components in J/ψandρ-πpuzzle  

作　　者：郭星导 陈殿勇 李学潜 苑仲元 桑士晶 Xing-Dao Guo;Dian-Yong Chen;Xue-Qian Li;Zhong-Yuan Yuan;Shijing Sang(College of Physics and New Energy,Xuzhou University of Technology,Xuzhou 221111,China;School of Physics,Southeast University,Nanjing 211189,China;Department of Physics,Nankai University,Tianjin 300071,China;Lanzhou Center for Theoretical Physics,Lanzhou University,Lanzhou 730000,China)

机构地区：[1]College of Physics and New Energy,Xuzhou University of Technology,Xuzhou 221111,China [2]School of Physics,Southeast University,Nanjing 211189,China [3]Department of Physics,Nankai University,Tianjin 300071,China [4]Lanzhou Center for Theoretical Physics,Lanzhou University,Lanzhou 730000,China

出　　处：《Chinese Physics C》2024年第5期141-150,共10页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11805160,11747040,11675082);Qinglan Project of Jiangsu Province in 2021。

摘　　要：Motivated by the large branching fractions of J/ψ→f0(1710)ω/f0(1710)ϕand the light exotic candidates,we found that there may exist molecular states composed of f0(1710)ωand f0(1710)ϕ,which correspond to X(2440)and X(2680)observed a few decades ago.The branching fractions of X(2440)and X(2680)to various PV and KKω(ϕ)channels were estimated in the molecular scenario.In addition,the large branching fractions of J/ψ→f0(1710)ω/f0(1710)ϕindicate sizable molecular components in the J/ψstate.Thus,we consider J/ψas the superposition of thecc¯(1S),f0(1710)ω,and f0(1710)ϕmolecular states.These molecular components have a significant impact on the light hadron decays of J/ψ,which may elucidate the long standingρ−πpuzzle.

关 键 词：ρ-πpuzzle J/Ψ molecular state 

分 类 号：O57[理学—粒子物理与原子核物理]