https://doi.org/10.1140/epjc/s10052-021-09534-6
Regular Article - Theoretical Physics
Hidden and doubly heavy molecular states from interactions 
/
and 
/
1
School of Physics and Technology, Nanjing Normal University, 210097, Nanjing, China
2
Lanzhou Center for Theoretical Physics, Lanzhou University, 730000, Lanzhou, China
Received:
5
July
2021
Accepted:
6
August
2021
Published online:
14
August
2021
In this work, we perform a systematical investigation about the possible hidden and doubly heavy molecular states with open and hidden strangeness from interactions of 
/
, 
/
, 
/
, and 
/
in a quasipotential Bethe-Salpeter equation approach. The interactions of the systems considered are described within the one-boson-exchange model, which includes exchanges of light mesons and 
meson. Possible molecular states are searched for as poles of scattering amplitudes of the interactions considered. The results suggest that recently observed 
can be assigned as a molecular state of 
, which is a partner of 
state as a 
molecular state. The calculation also favors the existence of hidden heavy states 
with spin parity 
, 
with 
, and 
with 
, 
, and 
. In the doubly heavy sector, the bound states can be found from the interactions 
with , 
with , 
with and , and 
with and . Some other interactions are also found attractive, but may be not strong enough to produce a bound state. The results in this work are helpful for understanding the , and future experimental search for the new 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
