摘要
In this study,we systematically investigated two-pseudoscalar meson systems with the Bethe-Salpeter equation in the ladder and instantaneous approximations.By solving the Bethe-Salpeter equation numerically with the kernel containing the one-particle exchange diagrams,we found that the K■,DK,B■,D■,B■,BD,D■,BK,and■systems withI=0 can exist as bound states.We also studied the contributions from heavy meson(J/ψandΥ)exchanges and found that the contributions from heavy meson exchanges cannot be ignored.
作者
李子龙
谭星月
张珠峰
王振洋
郭新恒
Zi-Long Li;Xing-Yue Tan;Zhu-Feng Zhang;Zhen-Yang Wang;Xin-Heng Guo(Physics Department,Ningbo University,Zhejiang 315211,China;College of Nuclear Science and Technology,Beijing Normal University,Beijing 100875,China)
基金
Supported by National Natural Science Foundation of China(12105149,11775024)。
