On the Nature of the Scalar a_0(980) and f_0(980)-Mesons

TL;DR

This paper critically examines the properties of the scalar mesons a_0(980) and f_0(980), arguing that the four-quark model better explains their nature and discussing experiments to resolve their true structure.

Contribution

It provides a comprehensive comparison of models for these mesons and advocates for the four-quark model as the most plausible explanation.

Findings

Four-quark model is more preferable for a_0(980) and f_0(980)

Analyzes properties in different models

Proposes experiments to determine meson structure

Abstract

It is presented a critical consideration of all unusual properties of the scalar $a_0(980)$ and $f_0(980)$-mesons in the four-quark, two-quark and molecular models. The arguments are adduced that the four-quark model is more preferable. It is discussed the complex of experiments that could finally resolve this issue.