What can we learn about light-meson interactions at electron-positron colliders?

TL;DR

This paper reviews how electron-positron colliders have advanced understanding of light-meson interactions at low energies, focusing on experimental methods, theoretical tools, and recent results involving light pseudoscalar and vector mesons.

Contribution

It provides a comprehensive overview of experimental and theoretical approaches to studying light-meson interactions at electron-positron colliders, highlighting recent collider results and future prospects.

Findings

Recent collider experiments have yielded new insights into meson-meson interactions.

Experimental techniques for meson production and analysis are systematically reviewed.

Future super-charm-tau factories could further enhance understanding of light-meson dynamics.

Abstract

Precision studies at electron-positron colliders with center-of-mass energies in the charm-tau region and below have strongly contributed to our understanding of light-meson interactions at low energies. We focus on the processes involving two or three light mesons with invariant masses below nucleon-antinucleon threshold. A prominent role is given to the interactions of the nine lightest pseudoscalar mesons (pions, kaons, $\eta$, and $\eta'$) and the two narrow neutral isoscalar vector mesons $\omega$ and $\phi$. Experimental methods used to produce the mesons are reviewed as well as theory tools to extract properties of the meson-meson interactions. Examples of recent results from the DA$\Phi$NE, BEPCII, and VEPP-2000 colliders are presented. In the outlook we briefly discuss prospects for further studies at future super-charm-tau factories.