X_1(2900) as a D_1 K molecule

Abstract

The analyses of the LHCb data on X(2900) in the D^- K^+ spectrum are performed. Both dynamically generated and explicitly introduced X_1(2900) are considered. The results show that both these two approaches support the interpretation of X_1(2900) as a bar{D}_1 K molecular state, with J^{P}=1^- and an iso-singlet interpretation is much more favorable. The effect of triangle singularity on the production of X_1(2900) is also discussed, and it is found that it cannot be interpreted as a pure triangle cusp.

arXiv comment11 pages, 7 figures

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Cited by in corpus (15)

• An updated review of the new hadron states
• How to understand the $X(2900)$?
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