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题名: The octet meson and octet baryon interaction with strangeness and the Lambda(1405)
作者: He, J;  Lu, PL
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS
出版日期: 2015
卷号: 24, 期号:11, 页码:1550088
关键词: Octet meson and baryon interaction ;  Lambda(1405) ;  Bethe-Salpeter equation
学科分类: Physics
DOI: http://dx.doi.org/10.1142/S0218301315500883
通讯作者: He, J (reprint author), Chinese Acad Sci, Inst Modern Phys, Div Theoret Phys, Lanzhou 730000, Peoples R China.
文章类型: Article
英文摘要: The octet meson and baryon interaction with strangeness S = -1 is studied fully relativistically with chiral Lagrangian. In this paper, a Bethe-Salpeter equation (BSE) approach with spectator quasipotential approximation is applied to study the reactions K- p -> MB with MB = K(-)p, (K) over bar (0)n, pi(-)Sigma(+), pi(0)Sigma(0), pi(+)Sigma(-) and eta Lambda with all possible partial waves and theoretical results are comparable with experimental data. It is found that the Weinberg-Tomozawa potential derived from the lowest order chiral Lagrangian only provides the contributions from partial waves with spin-parities JP = 1/2(+) and 1/2(-). Two-pole structure of the Lambda(1405) is confirmed with poles at 1383 + 99i and 1423 + 14i MeV. The lower and higher poles originate from Sigma pi interaction as a resonance and (K) over barN interaction as a bound state, respectively.
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: SIGMA-HYPERON PRODUCTION ;  K-P INTERACTIONS ;  LOW-ENERGY K ;  CHIRAL DYNAMICS ;  NUCLEON INTERACTIONS ;  QUARK-MODEL ;  300 MEV/C ;  SCATTERING ;  HYDROGEN ;  CONSTRAINTS
收录类别: SCI
项目资助者: Major State Basic Research Development Program in China [2014CB845405] ;  National Natural Science Foundation of China [11275235]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20805
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
He, J,Lu, PL. The octet meson and octet baryon interaction with strangeness and the Lambda(1405)[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS E-NUCLEAR PHYSICS,2015,24(11):1550088.
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