Explanation of Y(4630) as a hadronic resonant state  

作　　者：梅晓慧 余卓 宋昴 郭建友 李刚 罗旋 Xiao-Hui Mei;Zhuo Yu;Mao Song;Jian-You Guo;Gang Li;Xuan Luo(School of Physics and Optoelectronic engineering,Anhui University,Hefei 230601,China;School of Physics,Southeast University,Nanjing 210094,China)

机构地区：[1]School of Physics and Optoelectronic engineering,Anhui University,Hefei 230601,China [2]School of Physics,Southeast University,Nanjing 210094,China

出　　处：《Chinese Physics C》2023年第3期49-56,共8页中国物理C（英文版）

基　　金：Supported in part by the National Natural Science Foundation of China(11935001);the Natural Science Foundation of Anhui Province(2108085MA20,2208085MA10);the Key Research Foundation of Education Ministry of Anhui Province of China(KJ2021A0061)。

摘　　要：Theorists have given various explanations for the discovery of Y(4630).We find that if Y(4630)is inter-preted as the D-wave resonant state of the ∧_(c)∧_(c)。system,the particle mass,decay width,and all quantum numbers are consistent with experimental observations.We use the Bonn approximation to obtain the interaction potential of the one boson exchange model.Then,we extend the complex scaling method to calculate the bound and resonant states.The results indicate that the ∧_(c)∧_(c) system can form not only the bound state of the S wave but also the reson-ant state of the high angular momentum,and the ^(3)D_(1) wave resonant state can explain the structure of Y(4630)very Well.

关 键 词：resonant state one boson exchange model complex scaling method 

分 类 号：O572.34[理学—粒子物理与原子核物理]