期刊
PHYSICAL REVIEW D
卷 97, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.97.014017
关键词
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资金
- Chinese Academy of Sciences
- National Natural Science Foundation of China [11475227, 11375024, 11522539, 11735003, 11505158, 11475015, 11647601]
- Youth Innovation Promotion Association CAS [2016367]
- China Postdoctoral Science Foundation [2015M582197]
- Postdoctoral Research Sponsorship in Henan Province [2015023]
- Academic Improvement Project of Zhengzhou University
- European FEDER funds [FIS2014-57026-REDT, FIS2014-51948-C2-1-P, FIS2014-51948-C2-2-P]
- Generalitat Valenciana in the program Prometeo [II-2014/068]
- Spanish Ministerio de Economia y Competitividad
We have studied the J/Psi phi mass distribution of the B+ -> J/Psi phi K+ reaction from threshold to about 4250 MeV, and find that one needs the contribution of the X(4140) with a narrow width, together with the X(4160) which accounts for most of the strength of the distribution in that region. The existence of a clear cusp at the D-s*(D) over bar (s)* threshold indicates that the X(4160) resonance is strongly tied to the D-s*(D) over bar (s)* channel, which finds a natural interpretation in the molecular picture of this resonance.
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