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arXiv · hep-ph/0501105

Analysis the $f_0(980)$ and $a_0(980)$ mesons as four-quark states with the QCD sum rules

Zhi-Gang Wang·Wei-Min Yang
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Abstract

In this article, we take the point of view that the scalar mesons $ f_0(980)$ and $a_0(980)$ are diquark-antidiquark states $(qq)_{\bar{3}}(\bar{q}\bar{q})_3$, and devote to determine their masses in the framework of the QCD sum rules approach with the interpolating currents constructed from scalar-scalar type and pseudoscalar-pseudoscalar type diquark pairs respectively. The numerical results indicate that the scalar mesons $ f_0(980)$ and $a_0(980)$ may have two possible diquark-antidiquark substructures.

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Zhi-Gang Wang, Wei-Min Yang. 2005-03-22. Analysis the $f_0(980)$ and $a_0(980)$ mesons as four-quark states with the QCD sum rules. https://doi.org/10.1140/epjc%2Fs2005-02263-4

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