Analysis of X（5568） as Scalar Tetraquark State in Diquark-Antidiquark Model with QCD Sum Rules

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 residu...

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Bibliographic Details
Published in:理论物理通讯：英文版 2016, Vol.65 (9), p.335-339
Main Author: 王志刚
Format: Article
Language:English
Subjects:
QCD求和规则
双夸克
实验数据
操作者
标量
模型
真空凝聚
自旋宇称
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Summary: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 MX =（5.57 ± 0.12） Ge V, which is consistent with the experimental data. The present prediction favors assigning the X（5568） to be the scalar tetraquark state.
ISSN:0253-6102