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arXiv · 1602.08711

Analysis of the $X(5568)$ as scalar tetraquark state in the diquark-antidiquark model with QCD sum rules

Zhi-Gang Wang
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Abstract

In this article, we take the $X(5568)$ as the diquark-antidiquark type tetraquark state with the spin-parity $J^P=0^+$, construct the scalar-diquark-scalar-antidiquark type current, carry out the operator product expansion up to the vacuum condensates of dimension-10, and study the mass and pole residue in details with the QCD sum rules. We obtain the value $M_X=\left(5.57\pm0.12 \right) \,\rm{GeV}$, which is consistent with the experimental data. The present prediction favors assigning the $X(5568)$ to be the scalar tetraquark state.

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Zhi-Gang Wang. 2016-07-20. Analysis of the $X(5568)$ as scalar tetraquark state in the diquark-antidiquark model with QCD sum rules. https://doi.org/10.1088/0253-6102%2F66%2F3%2F335

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