期刊
PHYSICAL REVIEW D
卷 104, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhssRev1/104.074030
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资金
- National Natural Science Foundation of China [11775050, 11505158]
- Key Research Projects of Henan Higher Education Institutions [20A140027]
- Project of Youth Backbone Teachers of Colleges and Universities of Henan Province [2020GGJS017]
- Natural Science Foundation of Henan [212300410123]
- Youth Talent Support Project of Henan [2021HYTP002]
- Fundamental Research Cultivation Fund for Young Teachers of Zhengzhou University [JC202041042]
- Academic Improvement Project of Zhengzhou University
The study suggests that a bound state of around 4010 MeV could be formed by the 1Y D' system, and the enhancement structure observed by BESIII could be interpreted as a shallow D'b* bound state.
Within the framework of the local hidden gauge formalism, we have reanalyzed the hidden -charm vector-vector meson D'Ir, Kje, and pp interactions with thc quantum numbers 1(.1P) = 1(1-1. The estimation indicates that 1Y D' system could form a bound state around 4010 MeV. By comparing our theoretical estimation with the BESIII measurements of the e ' e- > (TY Ix Hr7 and el e- b,1)7ro reactions at s = 4.26 GeV, we find that the enhancement structure of the 7, (4(25) in the WI)* invariant mass distribution observed by BESIII could be interpreted by a shallow D'b* bound state.
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