https://doi.org/10.1140/epjc/s10052-020-7823-z
Regular Article - Theoretical Physics
Possible interpretation of the newly observed 
states
1
School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China
2
Department of Electronic Information and Physics, Changzhi University, Changzhi, 046011, Shanxi, China
3
Department of Physics, Hunan Normal University, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, Changsha, 410081, China
4
Synergetic Innovation Center for Quantum Effects and Applications (SICQEA), Hunan Normal University, Changsha, 410081, China
* e-mail: lyxiao@ustb.edu.cn
Received:
20
January
2020
Accepted:
10
March
2020
Published online:
27
March
2020
Inspired by the newly observed states by the LHCb Collaboration, we investigate the two-body strong decays of the low-lying 
-mode baryons up to 
shell using the chiral quark model within the j-j coupling scheme. Our results indicate that: (i) the newly observed states 
and 
are good candidates of the light spin 
states, while the spin-parity 
and 
cannot be distinguished. The other two states, 
and 
mostly correspond to the light spin 
states, while the spin-parity and 
cannot be distinguished as well. (ii) The 2S states with spin-parity 
and 
, respectively, might be narrow states with a width of 
MeV. (iii) The 1D states are not broad and the total decay widths vary from several to dozens of MeV, which have a good potential to be observed in future experiments.
© The Author(s), 2020
