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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 and Wei-Min Yang

Eur. Phys. J. C, 42 1 (2005) 89-92

DOI: https://doi.org/10.1140/epjc/s2005-02263-4

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