https://doi.org/10.1140/epjc/s10052-018-6083-7
Regular Article - Theoretical Physics
Strong decay of 
as a 2P state in the 
family
1
Department of Physics, Hunan Normal University, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Changsha, 410081, China
2
Synergetic Innovation Center for Quantum Effects and Applications (SICQEA), Hunan Normal University, Changsha, 410081, China
3
School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China
4
Center of High Energy Physics, Peking University, Beijing, 100871, China
* e-mail: lvqifang@hunnu.edu.cn
Received:
13
June
2018
Accepted:
18
July
2018
Published online:
25
July
2018
Considering the mass, parity and 
decay mode, we tentatively assign the as the 
wave states with one radial excitation. Then, via studying the strong decay behavior of the within the 
model, we obtain that the total decay widths of the 
and 
states are 16.27 and 25.39 MeV, respectively. Compared with the experimental total width 
measured by LHCb Collaboration, both assignments are allowed, and the 
assignment is more favorable. Other 
-mode 
states are also investigated, which are most likely to be narrow states and have good potential to be observed in future experiments.
© The Author(s), 2018
