期刊
NUCLEAR PHYSICS A
卷 954, 期 -, 页码 41-57出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysa.2016.04.013
关键词
(K)over-barN interaction; Lambda(1405) resonance; Chiral SU(3) dynamics; pi Sigma spectrum; Compositeness
资金
- MEXT [2404:24105008]
- RIKEN Junior Research Associate Program
- RIKEN iTHES Project
- Yukawa International Program for Quark-Hadron Sciences (YIPQS)
- Open Partnership Joint Projects of JSPS Bilateral Joint Research Projects
- JSPS KAKENHI [23224006, 24740152, 25800170]
- DFG [CRC 110]
- Spanish Ministerio de Economia y Competitividad, European FEDER funds [FIS2014-51948-C2-1-P, FIS2014-51948-C2-2-P]
- Generalitat Valenciana in the program Prometeo II [2014/068]
- European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter under the Seventh Framework Programme of the EU [283286]
- Grants-in-Aid for Scientific Research [25800170, 24105008] Funding Source: KAKEN
The properties of the Lambda(1405) resonance are key ingredients for determining the antikaon-nucleon interaction in strangeness nuclear physics, and the novel internal structure of the Lambda(1405) is of great interest in hadron physics, as a prototype case of a baryon that does not fit into the simple three-quark picture. We show that a quantitative description of the antikaon-nucleon interaction with the Lambda(1405) is achieved in the framework of chiral SU(3) dynamics, with the help of recent experimental progress. Further constraints on the (K) over barN subthreshold interaction are provided by analyzing pi Sigma spectra in various processes, such as the K(-)d -> pi Sigma n reaction and the Lambda(c) -> pi pi Sigma decay. The structure of the Lambda(1405) is found to be dominated by an antikaon-nucleon molecular configuration, based on its wavefunction derived from a realistic (K) over barN potential and the compositeness criteria from a model-independent weak-binding relation. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据