The Roper resonance as a meson-baryon molecular state

Abstract

The recently proposed mechanism for the formation of the Roper resonance, in which a dynamically generated state as well as a genuine three-quark resonant state play an equally important role, is confronted with the model proposed almost twenty years ago in which the Roper is pictured as a molecular state of the nucleon and the $\sigma$ meson.

Comments: Contributed talk at the Mini-Workshop "Double-charm baryons and dimesons", Bled, Slovenia, June 17 - 23, 2018, 4 pages, 3 figures