Regular Article - Theoretical Physics
Analysis of the scalar nonet mesons with QCD sum rules
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
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Accepted: 13 July 2016
Published online: 30 July 2016
In this article, we assume that the nonet scalar mesons below are the two-quark–tetraquark mixed states and study their masses and pole residues using the QCD sum rules. In the calculation, we take into account the vacuum condensates up to dimension 10 and the corrections to the perturbative terms in the operator product expansion. We determine the mixing angles, which indicate the two-quark components are much larger than , then we obtain the masses and pole residues of the nonet scalar mesons.
© The Author(s), 2016