An ezplanation of the △_(D_(35))(1930) as a ρ△ bound state

摘要：

Constituent quark models based on two-body potentials systematically overpredict the mass of △_(D_(35))(1930). A possible solution to this problem comes out from the application of a schematic hybrid model, containing three-quark as well as meson-baryon components, to the light-quark baryon spectrum. The △_(D_(35))(1930) and its partners △_(D_(33))(1940) and △_(S_(31)) (1900) are found to contain a significant ρ△ component. Then, through the use of the hidden gauge formalism, it is shown that these resonances can be dynamically generated from the ρ-△ interaction. In particular △_(D_(35))(1930) can be interpreted as being essentially a ρ△ bound state. This interpretation suggests that the inclusion of ρ△ as an effective inelastic channel in data analyses could improve the extraction and identification of the resonance.

关键词： Baryon spectra dynamically generated resonances quark model

作者: P.González E.Oset J.Vijande

作者单位: Departamento de Fisica Teorica,Universidad de Valencia (UV) e IFIC (UV-CSIC),Spain Departamento de Fisica Atomica,Molecular y Nuclear,Universidad de Valencia (UV) e IFIC (UV-CSIC),Spa

会议类型: 国际会议

会议名称: The 12th International Workshop on the Physics Ezcited Nucleon(2009核子共振态物理国际研讨会)

会议地点: 北京

会议语种:英文

页码: 1267-1272

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）