https://doi.org/10.1140/epjc/s10052-022-10396-9
Regular Article - Theoretical Physics
How to understand the X(2900)?
1
School of Physical Science and Technology, Hebei University, 071002, Baoding, China
2
Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province, 071002, Baoding, China
3
School of Physics and Center of High Energy Physics, Peking University, 100871, Beijing, China
Received:
2
April
2022
Accepted:
29
April
2022
Published online:
9
May
2022
In this work, the S- and P-wave 
interactions are studied in a coupled-channel formalism to understand the recently observed 
and 
at LHCb. The experimental event distributions can be well described, and two states with 
and 
are yielded in a unified framework. The masses of the 
and 
states are consistent with the experimental data, but the width of the state is larger than that of the one. The can be interpreted as the P-wave excitation of the ground-state in the hadronic molecular picture. The S- and P-wave multiplets in the system have many members, so the present peak in the 
invariant mass distributions might contain multi substructures.
© The Author(s) 2022
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