Tetraquark mixing framework to explain two light-meson nonets

TL;DR

This paper discusses a tetraquark mixing model to explain the properties of two light-meson nonets, providing a unified framework that aligns with observed phenomenological signatures.

Contribution

It introduces a novel tetraquark mixing framework that accounts for the structure of two light-meson nonets in the scalar channel.

Findings

The framework successfully explains the mass patterns of the nonets.

Phenomenological signatures support the tetraquark mixing hypothesis.

Provides a unified explanation for both light and heavy nonets.

Abstract

In this talk, we summarize our recent works on the tetraquark mixing framework for the two light-meson nonets in the $J^{PC} = 0^{++}$ channel, the light nonet [$a_0(980)$, $K_0^*(700)$, $f_0(500)$, $f_0(980)$] and the heavy nonet [$a_0(1450)$, $K_0^*(1430)$, $f_0(1370)$, $f_0(1500)$]. We briefly explain this mixing framework and present various phenomenological signatures to support this picture.