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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
; | | Date: |
13 Dec 2004 | | Journal: | Eur.Phys.J. C42 (2005) 89-92 | | Subject: | hep-ph | | Affiliation: | NCEPU), Wei-Min Yang (USTC | | 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 $(qq)_{ar{3}}(ar{q}ar{q})_3$, 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. | | Source: | arXiv, hep-ph/0501105 | | Services: | Forum | Review | PDF | Favorites | |
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