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
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3