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arXiv · 1507.02131

Analysis of the scalar nonet mesons with the QCD sum rules

Zhi-Gang Wang
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Abstract

In this article, we assume that the nonet scalar mesons below $1\,\rm{ GeV}$ are the two-quark-tetraquark mixed states and study their masses and pole residues using the QCD sum rules. In calculation, we take into account the vacuum condensates up to dimension 10 and the $\mathcal{O}(α_s)$ 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 $50\%$, then obtain the masses and pole residues of the nonet scalar mesons.

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Zhi-Gang Wang. 2016-07-13. Analysis of the scalar nonet mesons with the QCD sum rules. https://doi.org/10.1140/epjc%2Fs10052-016-4262-y

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