https://doi.org/10.1140/epja/s10050-021-00542-4
Regular Article - Theoretical Physics
Hidden charm pentaquark states in a diquark model
1
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, 101408, Beijing, China
2
CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 100190, Beijing, China
3
School of Physics, Beihang University, 100191, Beijing, China
Received:
7
March
2021
Accepted:
28
June
2021
Published online:
18
July
2021
The mass spectrum of hidden charm pentaquark states composed of two diquarks and an antiquark are calculated by use of an effective Hamiltonian which includes explicitly the spin, color, and flavor dependent interactions. The results show that the 
and 
states could be explained as hidden charm pentaquark states with isospin and spin-parity 
, the 
state could be explained as a hidden charm pentaquark state with 
, and the 
state could be explained as a hidden charm pentaquark state with 
or 
. Predications for the masses of other possible pentaquark states are also given, and the possible decay channels of these hidden charm pentaquark states are discussed.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
