https://doi.org/10.1140/epjc/s10052-023-12283-3
Regular Article - Theoretical Physics
Hidden strange 
-like molecular states
1
School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, China
2
Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, and Key Laboratory of Quantum Theory and Applications of MoE, Lanzhou University, 730000, Lanzhou, Gansu, China
3
Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, 730000, Lanzhou, China
4
Frontiers Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, Gansu, China
Received:
12
October
2023
Accepted:
21
November
2023
Published online:
4
December
2023
With the chiral unitary approach, we evaluate the hidden strange -like molecular states of 
systems 
, 
, 
, and 
coupled to the non-strange channels. The S-wave scattering amplitudes are calculated based on the vector meson exchange, four pseudoscalar mesons contact interactions, and four vector mesons contact interactions obtained from the extended local hidden gauge approach. We find six states below the threshold of the most relevant channel. The binding energies of these states are around 1–10 MeV and the widths are around 0.2–0.7 MeV. Our research is a supplement to the mass spectra of -like states, which may be useful for the experimental search in the future.
© The Author(s) 2023
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