Light meson spectroscopy at $e^{+}{e}^{-}$ machines

Abstract

The study of light hadrons is central to the understanding of confinement--a unique property of QCD. The quark model describs mesons as bound states of quarks and antiquarks. LQCD and QCD-motivated models for hadrons, however, predict a richer spectrum of mesons that takes into account not only the quark degrees of freedom but also the gluonic degrees of freedom. A selection of recent progress in the light-quark sector with unprecedented high-statistics data sets from $e^{+}{e}^{-}$ experiments are reviewed.

8 pages, 4 figures, proceedings of the "18th International Conference on Hadron Spectroscopy and Structure" (HADRON2019), Guilin, China, August 16-21, 2019; to appear in Int. J. Mod. Phys. A