Author:
Li Zi-Long,Tan Xing-Yue,Zhang Zhu-Feng,Wang Zhen-Yang,Guo Xin-Heng
Abstract
Abstract
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
,
,
,
,
,
,
,
, and
systems with
can exist as bound states. We also studied the contributions from heavy meson (
and
) exchanges and found that the contributions from heavy meson exchanges cannot be ignored.
Funder
National Natural Science Foundation of China
Subject
Astronomy and Astrophysics,Instrumentation,Nuclear and High Energy Physics