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题名: Role of the N*(2080) in pp -> pK(+)Lambda(1520) and pi(-)p -> K-0 Lambda(1520) reactions
作者: Xie, JJ ;  Liu, BC
刊名: PHYSICAL REVIEW C
出版日期: 2013
卷号: 87, 期号:4, 页码:45210
关键词: PAIR PRODUCTION ;  COLLISIONS ;  PARTICLES ;  THRESHOLD ;  NUCLEON
学科分类: Physics
通讯作者: Xie, JJ (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
部门归属: [Xie, Ju-Jun] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China; [Xie, Ju-Jun; Liu, Bo-Chao] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Liu, Bo-Chao] Xi An Jiao Tong Univ, Dept Appl Phys, Xian 710049, Shanxi, Peoples R China
英文摘要: We investigate the Lambda(1520) hadronic production in the pp -> pK(+)Lambda(1520) and pi(-) p -> K-0 Lambda(1520) reactions within the effective Lagrangian method. For the pi(-) p -> K-0 Lambda(1520) reaction, in addition to the "background" contributions from t-channel K* exchange, u-channel Sigma(+) exchange, and s-channel nucleon pole terms, we also consider the contribution from the nucleon resonance N*(2080) (spin-parity J(P) = 3/2(-)), which has significant coupling to the K Lambda(1520) channel. We show that the inclusion of the N*(2080) leads to a fairly good description of the low-energy experimental total cross section data of the pi(-) p -> K-0 Lambda(1520) reaction. From fitting to the experimental data, we get the N*(2080)N pi coupling constant g(N*(2080)N pi) = 0.14 +/- 0.04. By using this value, and with the assumption that the excitation of N*(2080) is due to the pi(0)-meson exchanges, we calculate the total and differential cross sections of the pp -> pK(+)Lambda(1520) reaction. We also demonstrate that the invariant mass distribution and the Dalitz plot provide direct information of the Lambda(1520) production, which can be tested by future experiments.
资助者: National Natural Science Foundation of China [11105126, 10905046]; CAS Theoretical Physics Center for Science Facilities
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000318525900002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15377
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Xie, JJ,Liu, BC. Role of the N*(2080) in pp -> pK(+)Lambda(1520) and pi(-)p -> K-0 Lambda(1520) reactions[J]. PHYSICAL REVIEW C,2013,87(4):45210.
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