Charmonium, exotic hadrons and hadron structure

TL;DR

This paper reviews major advances in understanding hadron structure through charmonium spectroscopy, emphasizing the roles of unquenching dynamics, multiquark components, and exotic states, with a focus on the J/ψ and related particles.

Contribution

It highlights the significance of unquenching effects and multiquark states in hadron spectroscopy, providing a comprehensive overview of recent progress in the field.

Findings

Charmonium spectrum supports quark potential models.

Unquenching dynamics are crucial for hadron structure understanding.

Exotic multiquark states influence hadron spectroscopy.

Abstract

To celebrate the 50th anniversary of the discovery of the J/{\psi}, the first charmonium state observed, I start with a brief review of major progresses on the QCD inspired quark potential model originated from charmonium spectrum.Then I show the importance of unquenching dynamics, multiquark components and exotic multiquark states for understanding hadron structure and hadron spectrscopy. The J/{\psi} and charmonium-like states have played an important role in this aspect.