Analysis of the tensor–tensor type scalar tetraquark states with QCD sum rules

Zhi-Gang Wang,Jun-Xia Zhang

doi:10.1140/epjc/s10052-016-4514-x

Zhi-Gang Wang, Jun-Xia Zhang

Open Access

https://doi.org/10.1140/epjc/s10052-016-4514-x

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Abstract

In this article, we study the ground states and the first radial excited states of the tensor-tensor type scalar hidden-charm tetraquark states with the QCD sum rules. We separate the ground state contributions from the first radial excited state contributions unambiguously, and obtain the QCD sum rules for the ground states and the first radial excited states, respectively. Then we search for the Borel parameters and continuum threshold parameters according to four criteria and obtain the masses of the tensor-tensor type scalar hidden-charm tetraquark states, which can be confronted to the experimental data in the future.

Highlights

The attractive interaction induced by one-gluon exchange favors formation of diquark states in color antitriplet and disfavors formation of diquark states in color sextet
The scalar and axial-vector light diquark states have been studied with the QCD sum rules [1,2,3,4], the scalar and axial-vector heavy-light diquark states have been studied with the QCD sum rules [5,6]
We search for the Borel parameters T 2 and continuum threshold parameters ss0 ̄s/du according to the four criteria: 1. Pole dominance at the hadron side; 2

Summary

Introduction

The attractive interaction induced by one-gluon exchange favors formation of diquark states in color antitriplet and disfavors formation of diquark states in color sextet. We study the Cσαβ ⊗ σ αβ C-type hidden-charm tetraquark states with the QCD sum rules, and explore whether or not the

Results

Conclusion