期刊
PHYSICAL REVIEW C
卷 93, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.93.065203
关键词
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资金
- Chinese Academy of Sciences (CAS) in the Program of Visiting Professorship for Senior International Scientists [2013T2J0012]
- National Natural Science Foundation of China [11475227, 11375024, 11522539, 11505158, 11475015, 11565007]
- Department of Energy
- Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF151CJ1]
- Postdoctoral Research Sponsorship in Henan Province [2015023]
- China Postdoctoral Science Foundation [2015M582197]
- Spanish Ministerio de Economia y Competitividad and European FEDER funds [FIS2011-28853-C02-01, FIS2011-28853-C02-02]
- Generalitat Valenciana via the program Prometeo [II-2014/068]
Assuming that the recently observed hidden-charm pentaquark state, P-c(4450), is of molecular nature as predicted in the unitary approach, we propose to study the decay of Xi(-)(b) -> J/psi K-Lambda to search for the strangeness counterpart of the P-c(4450). There are three ingredients in the decay mechanism: the weak decay mechanism, the hadronization mechanism, and the final state interactions in the meson-baryon system of strangeness S = -2 and isospin I = 1/2 and of the J/psi Lambda. All these have been tested extensively. As a result, we provide a genuine prediction of the invariant mass distributions where a strangeness hidden-charm pentaquark state, the counterpart of the P-c(4450), can be clearly seen. The decay rate is estimated to be of similarmagnitude as the Lambda(0)(b) -> J/psi K(-)p measured by the LHCb Collaboration.
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