https://doi.org/10.1140/epjc/s10052-016-3880-8
Regular Article - Theoretical Physics
Analysis of the 
pentaquark states in the diquark model with QCD sum rules
1
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
2
Institute of High Energy Physics and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
* e-mail: zgwang@aliyun.com
Received:
20
August
2015
Accepted:
4
January
2016
Published online:
25
January
2016
In this article, we present the scalar-diquark–scalar-diquark–antiquark type and scalar-diquark–axialvector-diquark–antiquark type pentaquark configurations in the diquark model, and study the masses and pole residues of the 
hidden-charm pentaquark states in detail with the QCD sum rules by extending our previous work on the 
and 
hidden-charm pentaquark states. We calculate the contributions of the vacuum condensates up to dimension-10 in the operator product expansion by constructing both the scalar-diquark–scalar-diquark–antiquark type and the scalar-diquark–axialvector-diquark–antiquark type interpolating currents. The present predictions of the masses can be confronted to the LHCb experimental data in the future.
© The Author(s), 2016
