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The qqqq(q)over-bar components and hidden flavor contributions to the baryon magnetic moments
An, CS; Li, QB; Riska, DO; Zou, BS
2006
发表期刊PHYSICAL REVIEW C
卷号74期号:5页码:55205
通讯作者An, CS (reprint author), Inst High Energy Phys, CAS, POB 918, Beijing 100049, Peoples R China.
摘要The contributions from the qqqq (q) over bar components to the magnetic moments of the octet as well as the Delta(++) and Omega(-) decuplet baryons are calculated for the configurations that are expected to have the lowest energy if the hyperfine interaction depends on both spin and flavor. The contributions from the u (u) over bar ,d (d) over bar, and the s (s) over bar components are given separately. It is shown that addition of qqqq (q) over bar admixtures to the ground state baryons can improve the overall description of the magnetic moments of the baryon octet and decuplet in the quark model without SU(3) flavor symmetry breaking, beyond that of the different constituent masses of the strange and light-flavor quarks. The explicit flavor (and spin) wave functions for all the possible configurations of the qqqq (q) over bar components with light and strange q (q) over bar pairs are given for the baryon octet and decuplet. Admixtures of similar to 10% of the qqqq (q) over bar configuration where the flavor-spin symmetry is [4](FS)[22](F)[22](S), which is likely to have the lowest energy, in particular reduces the deviation from the empirical values of the magnetic moments Sigma(-) and the Xi(0) compared with the static qqq quark model.
文章类型Article
学科领域Physics
DOI10.1103/PhysRevC.74.055205
收录类别SCI
WOS类目Physics, Nuclear
WOS记录号WOS:000242409500050
引用统计
被引频次:26[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227919
专题理论物理室
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GB/T 7714
An, CS,Li, QB,Riska, DO,et al. The qqqq(q)over-bar components and hidden flavor contributions to the baryon magnetic moments[J]. PHYSICAL REVIEW C,2006,74(5):55205.
APA An, CS,Li, QB,Riska, DO,&Zou, BS.(2006).The qqqq(q)over-bar components and hidden flavor contributions to the baryon magnetic moments.PHYSICAL REVIEW C,74(5),55205.
MLA An, CS,et al."The qqqq(q)over-bar components and hidden flavor contributions to the baryon magnetic moments".PHYSICAL REVIEW C 74.5(2006):55205.
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