https://doi.org/10.1140/epjc/s10052-017-4997-0
Regular Article - Theoretical Physics
Analysis of the 
tetraquark states with QCD sum rules
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
* e-mail: zgwang@aliyun.com
Received:
16
April
2017
Accepted:
15
June
2017
Published online:
29
June
2017
In this article, we study the 
and 
tetraquark states with the QCD sum rules, and we obtain the predictions 
, 
, 
and 
, which can be confronted to the experimental data in the future. Furthermore, we illustrate that the diquark–antidiquark type tetraquark state can be taken as a special superposition of a series of meson–meson pairs and that it embodies the net effects.
© The Author(s), 2017
