Meson-baryon threshold effects in the light-quark baryon spectrum

Abstract

We argue that selected $S$ wave meson-baryon channels may play a key role to match poor baryon mass predictions from quark models with data. The identification of these channels with effective inelastic channels in data analysis allows to derive a prescription which could improve the extraction and identification of baryon resonances.

Comments: 17 pages, 3 figures. Accepted for publication in Phys. Rev. C