Explanation of the Δ5/2-(1930) as a ρΔ bound state

被引：53
作者：
Gonzalez, P. [1 ,2 ]
Oset, E. [1 ,2 ]
Vijande, J. [3 ]
机构：
[1] Univ Valencia, Dept Fis Teor, E-46071 Valencia, Spain
[2] Univ Valencia, CSIC, IFIC, Inst Invest Paterna, E-46071 Valencia, Spain
[3] Univ Valencia, Dept Fis Atom Mol & Nucl, E-46071 Valencia, Spain
来源：
PHYSICAL REVIEW C | 2009年 / 79卷 / 02期
关键词：
NUCLEON SCATTERING; CHIRAL DYNAMICS; BARYON; MESON; RESONANCES;
D O I：
10.1103/PhysRevC.79.025209
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We use the rho Delta interaction in the hidden gauge formalism to dynamically generate N-* and Delta(*) resonances. We show, through a comparison of the results from this analysis and from a quark model study with data, that the Delta(-)(5/2)(1930), Delta(-)(3/2)(1940), and Delta(-)(1/2)(1900) resonances can be assigned to rho Delta bound states. More precisely the Delta(-)(5/2)(1930) can be interpreted as a rho Delta bound state whereas the Delta(-)(3/2)(1940) and Delta(-)(1/2)(1900) may contain an important rho Delta component. This interpretation allows for a solution of a long-standing puzzle concerning the description of these resonances in constituent quark models. In addition we also obtain degenerate J(P)=1/2(-),3/2(-),5/2(-) N-* states but their assignment to experimental resonances is more uncertain.
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页数：9
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