https://doi.org/10.1140/epjc/s10052-021-09017-8
Regular Article – Theoretical Physics
Study of 
pentaquark system in the chiral quark model
Department of Physics, Nanjing Normal University, 210023, Nanjing, People’s Republic of China
Received:
19
January
2021
Accepted:
1
March
2021
Published online:
10
March
2021
With the discovery of some hidden-charm pentaquark resonances by the LHCb Collaboration, investigations of pentaquark states containing heavy quarks have aroused the interest of theorists. We study herein (
or d, 
or b) pentaquark system, in the framework of the chiral quark model. In consequence, some charmed and bottomed pentaquarks are considered to exist by five-body dynamical calculations. In the charm sector, 
and 
are possible candidates of 
and 
, respectively. Besides, two high-spin states, 
and 
, are also found in the energy region of 
GeV. In the bottom sector, 
, 
could be candidates of 
and 
, respectively. And 
and 
are found in the energy region of 
GeV. 
and 
are expected as compact states, while 
, 
, 
and 
are expected as molecular states.
© The Author(s) 2021
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