Some Developments in Light Quark Spectroscopy

TL;DR

This paper reviews recent experimental progress in light quark spectroscopy, focusing on scalar mesons and potential gluonic states, with new insights from decays of heavy mesons like D and D_s.

Contribution

It presents new experimental data on the scalar meson sector from D and D_s meson decays, advancing understanding of their structure and gluonic content.

Findings

New scalar meson information from D and D_s decays

Insights into gluonic content in scalar mesons

Updated experimental results on light quark states

Abstract

Among the many unresolved questions in light quark spectroscopy, the underlying structure of the scalar mesons and the identification of states with a gluonic content rank high. Recently, new information has come from $\phi$ radiative decays, $J/\psi$, $\tau$, $D$ and $D_s$ meson decays. Other papers in this conference review radiative transitions of $\phi$ and $J/\psi$. This paper discusses new information on the scalar sector primarily that from decays of $D$ and $D_s$ mesons.