Dynamical Hadrons

TL;DR

This paper reviews the theory of resonances formed dynamically from hadron-hadron interactions, highlighting examples and recent interpretations of new states as meson-baryon molecules.

Contribution

It provides a summary of the dynamical generation of hadron resonances and discusses recent evidence supporting certain states as molecular structures.

Findings

Some of the new $ ext{Ω}_c$ states may be meson-baryon molecules

Examples of meson-meson and meson-baryon systems are discussed

Different approaches to hadron interactions are reviewed

Abstract

In this talk I briefly review the theory of resonances dynamically generated from hadron-hadron scattering, sometimes referred to as "molecules"S. I give some classical examples of meson-meson and meson-baryon systems, as well as a few examples of different approaches to describe the interaction between hadrons. To conclude, I comment on a few recent works that suggest that some of the five new narrow $\Omega_c$ states, recently discovered by the LHCb collaboration, can be interpreted as meson-baryon molecules.