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
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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