Mass creation by the strong interaction: Glueballs -- status and perspectives

TL;DR

Glueballs, composed of gluons with color charge, are massive due to strong interaction dynamics, providing insight into mass generation in strongly interacting particles.

Contribution

This paper reviews the status and perspectives on glueballs, highlighting their role in understanding mass creation through the strong interaction.

Findings

Glueballs are massive due to gluon interactions with color charge.

They offer a unique probe into the mass generation mechanism in QCD.

Current status and future perspectives on glueball research are discussed.

Abstract

Glueballs represent a fascinating aspect of the strong interaction in nature. Gluons that serve as the mediators of the strong interaction are massless particles, but they possess a property unique to the strong interaction called color charge, which is analogous to electric charge in the electromagnetic interaction. Glueballs are composed of multiple gluons and would be massless without color charges. The interaction of the color charges, however, makes glueballs becoming massive objects. Glueballs thus offer a unique way to study the mass creation of strongly interacting particles.