Understanding the 1P- and 2S-wave nucleon resonances within the extended Lee-Friedrichs Model

Yu-Hui Zhou, Hui-Hua Zhong, Zhi-Yong Zhou +1

We present a unified desciption of the low-lying $1P$- and $2S$-wave nucleon resonance within the framework of an extended Lee-Friedrichs scheme. By incorporating the coupled-chann…