https://doi.org/10.1140/epjc/s10052-019-6589-7
Regular Article - Theoretical Physics
Pentaquark states with the 
configuration in a simple model
1
School of Physics, Shandong University, Jinan, 250100, People’s Republic of China
2
Institute of Theoretical Physics, Chinese Academy of Science, Beijing, 100190, People’s Republic of China
* e-mail: yrliu@sdu.edu.cn
Received:
7
October
2018
Accepted:
10
January
2019
Published online:
29
January
2019
We discuss the mass splittings for the S-wave triply heavy pentaquark states with the
configuration which is a mirror structure of 
. The latter configuration is related with the nature of 
observed by the LHCb Collaboration. The considered pentaquark masses are estimated with a simple method. One finds that such states are probably not narrow even if they do exist. This leaves room for molecule interpretation for a state around the low-lying threshold of a doubly heavy baryon and a heavy-light meson, e.g. 
, if it were observed. As a by product, we conjecture that upper limits for the masses of the conventional triply heavy baryons can be determined by the masses of the conventional doubly heavy baryons.
© The Author(s), 2019
