Regular Article - Theoretical Physics
Analysis of the strong decay with QCD sum rules
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
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Accepted: 7 May 2016
Published online: 19 May 2016
In this article, we take the X(5568) to be the scalar diquark–antidiquark type tetraquark state, study the hadronic coupling constant with the three-point QCD sum rules by carrying out the operator product expansion up to the vacuum condensates of dimension-6 and including both the connected and the disconnected Feynman diagrams; then we calculate the partial decay width of the strong decay and obtain the value , which is consistent with the experimental data from the D0 collaboration.
© The Author(s), 2016