Regular Article – Theoretical Physics
Canonical interpretations of the newly observed , , and resonances
Department of Physics, Hunan Normal University, 410081, Changsha, China
2 Synergetic Innovation Center for Quantum Effects and Applications (SICQEA), 410081, Changsha, China
3 Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, 410081, Changsha, China
Accepted: 18 September 2020
Published online: 6 October 2020
Three neutral resonances , , and have been observed in the mass spectrum by the LHCb Collaboration. Given the and mass spectra predicted by the constituent quark models, these three resonances are tentatively treated as the -mode , , , and states, and their strong decay behaviors are calculated within the model. Our results indicate that the and can be clarified into the and states respectively, and the can be regarded as the state. Also, we suggest that the previous observed may be the overlap of two structures and , and the should be the same state as . Other theoretical information on the missing , , and states may be helpful for future experimental searches.
© The Author(s) 2020
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