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

The European Physical Journal C

Jun-Xia Zhang¹  Zhi-Gang Wang¹ 

[1] Department of Physics, North China Electric Power University, 071003, Baoding, People’s Republic of China;

关键词: Operator Product Expansion;    Pole Residue;    Tetraquark State;    Borel Parameter;    Tensor Type;   

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

来源: Springer

【 摘 要 】

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 with the experimental data in the future.

【 授权许可】

CC BY