Two-pole structure of the $b_1$(1235) axial-vector meson

Samson Clymton, Hyun-Chul Kim

We investigate the dynamical generation of the $b_1$ meson in the $\pi \omega$ interaction, using the fully off-mass-shell coupled-channel formalism with the $\pi \omega$, $\eta \rho$, $\pi \varphi$, and $K\bar{K…