Nucleon pole contribution in the pp -> pp K+ K- reaction below the phi meson threshold

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	Nucleon pole contribution in the pp -> pp K+ K- reaction below the phi meson threshold
	Lu, QF ; Xie, JJ ; Li, DM
刊名	PHYSICAL REVIEW C
	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
ISSN号	0556-2813
通讯作者	Lu, QF (reprint author), Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Henan, 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.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [11105126]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
原文出处	http://dx.doi.org/10.1103/PhysRevC.90.034002
语种	英语
WOS记录号	WOS:000341297200002
公开日期	2015-06-03
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15655]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	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.
APA	Lu, QF,Xie, JJ,&Li, DM.(2014).Nucleon pole contribution in the pp -> pp K+ K- reaction below the phi meson threshold.PHYSICAL REVIEW C,90(3),34002.
MLA	Lu, QF,et al."Nucleon pole contribution in the pp -> pp K+ K- reaction below the phi meson threshold".PHYSICAL REVIEW C 90.3(2014):34002.