Studying the bound state of the $K^{-}p$ system in the Bethe-Salpeter formalism

Chao Wang, Liang-liang Liu, Xin-Heng Guo

We study the $s$-wave kaon-nucleon bound state with the strangeness $S=-1$ in the Bethe-Salpeter formalism in the ladder and instantaneous approximations. We solve the Bethe-Salpet…