An $N/D$ study of the $S_{11}$ channel $\pi N$ scattering amplitude

Qu-Zhi Li, Yao Ma, Wen-Qi Niu +2

Extensive dynamical $N/D$ calculations are made in the study of $S_{11}$ channel low energy $\pi$N scatterings, based on various phenomenological model inputs of left cuts at tree le…