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题名: Nucleon pole contribution in the pp -> pp K+ K- reaction below the phi meson threshold
作者: Lu, QF ;  Xie, JJ ;  Li, DM
刊名: PHYSICAL REVIEW C
出版日期: 2014
卷号: 90, 期号:3, 页码:34002
关键词: PROTON-PROTON COLLISIONS ;  PI-PI ;  RADIATIVE DECAY ;  PAIR PRODUCTION ;  LAMBDA(1405) ;  EXCHANGE ;  MODEL
学科分类: Physics
DOI: 10.1103/PhysRevC.90.034002
通讯作者: Lu, QF (reprint author), Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Henan, Peoples R China.
部门归属: [Lu, Qi-Fang ;  Li, De-Min] Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Henan, Peoples R China ;  [Xie, Ju-Jun] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China ;  [Xie, Ju-Jun] Chinese Acad Sci, Res Ctr Hadron, Lanzhou 730000, Peoples R China ;  [Xie, Ju-Jun] Chinese Acad Sci, Inst Modern Phys, CSR Phys, Lanzhou 730000, Peoples R China ;  [Xie, Ju-Jun] Lanzhou Univ, Lanzhou 730000, Peoples R China ;  [Xie, Ju-Jun] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: Nucleon pole contribution in the pp -> ppK(+) K- reaction below the threshold of the production of the phi meson is studied within the effective Lagrangian approach. It is assumed that the K- p final state originates from the decay of the hyperons Lambda(1115) and Lambda(1405). In addition to the pp final state interaction (FSI) parametrized using the Jost function, we have also considered theK(+) K- FSI with the techniques of the chiral unitary approach, where the scalar mesons f(0)(980) and a(0)(980) were dynamically generated. Hence, the contributions from scalar mesons f(0)(980) and a(0)(980) occur through the K+ K- FSI. It is shown that the available experimental data are well reproduced, especially the total cross sections and the invariant mass distributions of pp and K+ K-. Furthermore, different forms of the couplings (pseudoscalar and pseudovector) for the pi NN interaction and different strengths for the proton-proton FSI are also investigated. It is found that the contributions from hyperons Lambda(1115) and Lambda(1405) are different between these two kinds of couplings. On the other hand, the effects of the proton-proton FSI can be adjusted by the cutoff parameters used in the form factors.
资助者: National Natural Science Foundation of China [11105126]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000341297200002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15655
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Lu, QF,Xie, JJ,Li, DM. Nucleon pole contribution in the pp -> pp K+ K- reaction below the phi meson threshold[J]. PHYSICAL REVIEW C,2014,90(3):34002.
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