J~P assignments of Λ_c~+ baryons

摘要：

The good diquark is employed to study Λ_c~+ baryons within a mass loaded flux tube model. The study indicates that all Λ_c~+ baryons candidates in the 2008 review by the Particle Data Group (PDG) are well described in the mass loaded flux model. The quantum numbers J~P of these Λ_c~+ candidates are assigned. If Λ_c(2765)~+ is an orbitally excited Λ_c~+, it is likely the J~P=3~+/2 one. If Λ_c(2765)~+ is an orbitally excited Σ_c, there ought to be another J~P=3~+/2 Λ_c~+ with mass ≈ 2770 MeV. In the model, there exists no J~P=1~+/2 Λ_c~+ (≈ 2700) predicted in existing literature. Λ_c(2940)~+ is very possible the orbitally excited baryon with J~P=5~-/2.

关键词： diquark fluz tube model charmed baryons

作者: CHEN Bing WANG DengXia ZHANG Ai-Lin

作者单位: Department of Physics,Shanghai University,Shanghai 200444,China Department of Physics,Shanghai University,Shanghai 200444,China;Theoretical Physics Center for Scien

会议类型: 国际会议

会议名称: The 12th International Workshop on the Physics of Ezcited Nucleon NSTAR2009(2009激发态核子物理研讨会)

会议地点: 北京

会议语种:英文

页码: 1327-1330

在线出版日期: 2009-04-19（万方平台首次上网日期，不代表论文的发表时间）