期刊
PHYSICAL REVIEW D
卷 105, 期 9, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.105.094028
关键词
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资金
- Chinese Academy of Sciences President's International Fellowship Initiative (PIFI) [2021PM0066]
- Chinese Ministry of Science and Technology Foreign Expert Project [QN20200143003]
- National Natural Science Foundation of China (NSFC) [12047555]
- Institute of Modern Physics, Chinese Academy of Sciences
- Key Research Program of Frontier Sciences, Chinese Academy of Sciences [ZDB-SLY-7020]
- Natural Science Foundation of Gansu Province, China [20JR10RA067]
- Foundation for Key Talents of Gansu Province
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB34000000]
- U.S. Department of Energy, Office of Science [DE-FG02-87ER40371, DE-SC0018223]
This study examines all-charm tetraquarks using basis light-front quantization in Hamiltonian dynamics, focusing on mass calculations and meson-meson breakup threshold estimates. Results indicate that the lowest two-charm-two-anticharm state is not a tightly bound tetraquark.
We study all-charm tetraquarks in the front form of Hamiltonian dynamics using the many-body basis function approach known as basis light-front quantization. The model Hamiltonian contains transverse and longitudinal confining potentials and a one-gluon-exchange effective potential. We calculate masses of two-charm-two-anticharm states focusing on the lowest state. We also calculate two-quark and four-quark estimates of meson-meson breakup threshold. The results suggest that the lowest two-charm-twoanticharm state is not a tightly bound tetraquark. We discuss implications of the cluster decomposition principle for theories formulated on the light front and present our treatment of identical particles together with color-singlet restrictions on the space of quantum states.
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