Lambda(c)(2595) resonance as a dynamically generated state: The compositeness condition and the large N-c evolution
文献类型：期刊论文
| 作者 | Lu, Jun-Xu1,2; Chen, Hua-Xing1,2,3; Guo, Zhi-Hui4,5,6; Nieves, J.7; Xie, Ju-Jun3,8,9,10; Geng, Li-Sheng1,2,3 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2016-06-23 |
| 卷号 | 93页码:16 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.93.114028 |
| 英文摘要 | Recent studies have shown that the well-established Lambda(c) (2595) resonance contains a large meson-baryon component, which can vary depending on the specific formalism. In this work, we examine such a picture by utilizing the compositeness condition and the large number of colors (N-c) expansion. We examine three different models fulfilling two body unitarily in coupled-channels, and adopting renormalization schemes where the mass of the Lambda(c)(2595) resonance is well described, but not necessarily its width, since we do not consider three body channels and work at the isospin symmetric limit. Both approximations might have an effect larger on the width than on the mass. In this context, our studies show that the compositeness of the Lambda(c)(2595) depends on the number of considered coupled channels, and on the particular regularization scheme adopted in the unitary approaches and, therefore, is model dependent. In addition, we perform an exploratory study of the Lambda(c)(2595) in the large N-c expansion, within a scheme involving only the pi Sigma(c) and K Xi(c)', channels, whose dynamics is mostly fixed by chiral symmetry. In this context and formulating the leading-order interaction as a function of N-c, we show that for moderate N-c > 3 values, the mass and width of the Lambda(c)(2595) deviate from those of a genuine qqq baryon, implying the relevance of meson-baryon components in its wave function. Furthermore, we study the properties of the Lambda(c)(2595), in the strict N-c -> infinity limit, using an extension of the chiral Weinberg-Tomozawa interaction to an arbitrary number of flavors and colors. This latter study hints at the possible existence of a (perhaps) subdominant qqq component in the Lambda(c)(2595) resonance wave function, which would become dominant when the number of colors gets sufficiently large. |
| WOS关键词 | CHIRAL PERTURBATION-THEORY ; BETHE-SALPETER APPROACH ; ELEMENTARY PARTICLE ; BARYON RESONANCES ; SKYRME MODEL ; SYMMETRY ; CHARM ; LIMIT ; LAMBDA(1405) ; DEPENDENCE |
| 资助项目 | National Natural Science Foundation of China (NSFC)[11375024] ; National Natural Science Foundation of China (NSFC)[11522539] ; National Natural Science Foundation of China (NSFC)[11575052] ; National Natural Science Foundation of China (NSFC)[11105038] ; Spanish Ministerio de Economia y Competitividad ; European FEDER[FIS2014-51948-C2-1-P] ; European FEDER[FIS2014-57026-REDT] ; European FEDER[SEV-2014-0398] ; Generalitat Valenciana[PROMETEOII/2014/0068] ; Natural Science Foundation of Hebei Province[A2015205205] ; Education Department of Hebei Province[YQ2014034] ; Department of Human Resources and Social Security of Hebei Province[C201400323] ; Sino-German Collaborative Research Center "Symmetries and the Emergence of Structure in QCD" - DFG[CRC 110] ; NSFC |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000378306600004 |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Spanish Ministerio de Economia y Competitividad ; European FEDER ; Generalitat Valenciana ; Natural Science Foundation of Hebei Province ; Education Department of Hebei Province ; Department of Human Resources and Social Security of Hebei Province ; Sino-German Collaborative Research Center "Symmetries and the Emergence of Structure in QCD" - DFG ; NSFC |
| 源URL | [http://119.78.100.186/handle/113462/42980]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Geng, Li-Sheng |
| 作者单位 | 1.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China 2.Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Hebei Normal Univ, Dept Phys, Shijiazhuang 050024, Peoples R China 5.Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany 6.Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany 7.Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,Inst Fis Corpuscular IFIC, E-46071 Valencia, Spain 8.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 9.Chinese Acad Sci, Res Ctr Hadron & CSR Phys, Inst Modern Phys, Lanzhou 730000, Peoples R China 10.Lanzhou Univ, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Jun-Xu,Chen, Hua-Xing,Guo, Zhi-Hui,et al. Lambda(c)(2595) resonance as a dynamically generated state: The compositeness condition and the large N-c evolution[J]. PHYSICAL REVIEW D,2016,93:16. |
| APA | Lu, Jun-Xu,Chen, Hua-Xing,Guo, Zhi-Hui,Nieves, J.,Xie, Ju-Jun,&Geng, Li-Sheng.(2016).Lambda(c)(2595) resonance as a dynamically generated state: The compositeness condition and the large N-c evolution.PHYSICAL REVIEW D,93,16. |
| MLA | Lu, Jun-Xu,et al."Lambda(c)(2595) resonance as a dynamically generated state: The compositeness condition and the large N-c evolution".PHYSICAL REVIEW D 93(2016):16. |
入库方式： OAI收割
来源：近代物理研究所
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