https://doi.org/10.1140/epjc/s2005-02263-4
Theoretical Physics
Analysis the f 0(980) and a 0(980) mesons as four-quark states with the QCD sum rules
1
Department of Physics, North China Electric Power University, 071003, Baoding, P.R. China
2
Department of Modern Physics, University of Science and Technology of China, 230026, Hefei, P.R. China
* e-mail: wangzgyiti@yahoo.com.cn
In this article, we take the point of view that the scalar mesons f
0(980) and a
0(980) are the diquark-antidiquark states 
, and we devote our attention to the determination of their masses in the framework of the QCD sum rule 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.
© Springer-Verlag, 2005
