Regular Article - Theoretical Physics
as a molecule
Department of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 100871, Beijing, China
2 Department of Engineering Physics, Tsinghua University, 100084, Beijing, China
3 College of Physics, Sichuan University, 610065, Chengdu, Sichuan, China
Accepted: 28 August 2021
Published online: 14 September 2021
The analyses of the LHCb data on X(2900) in the spectrum are performed. Both dynamically generated and explicitly introduced are considered. The results show that both these two approaches support the interpretation of as a molecular state, with and an iso-singlet interpretation is much more favorable. The effect of triangle singularity on the production of is also discussed, and it is found that it cannot be interpreted as a pure triangle cusp.
© The Author(s) 2021
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