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Strangeness production process pp -> nK(+)Sigma(+) within resonance model

文献类型：期刊论文

作者Cao Xu1,2; Lee Xi-Guo1,3; Wang Qing-Wu1,2
刊名CHINESE PHYSICS LETTERS
出版日期2008-03-01
卷号25期号:3页码:888-891
ISSN号0256-307X
英文摘要We explore production mechanism and final state interaction in the pp -> nK(+)Sigma(+) channel based on the inconsistent experimental data published respectively by COSY-11 and COSY-ANKE. The scattering parameter a > 0 for n Sigma(+) interaction is favoured by large near-threshold cross section within a nonrelativistic parametrization investigation, and a strong n Sigma(+) interaction comparable to pp interaction is also indicated. Based on this analysis we calculate the contribution from resonance Delta*(1920) through pi(+) exchange within resonance model, and the numerical result suggests a rather small near-threshold total cross section, which is consistent with the COSY-ANKE data. With an additional sub-threshold resonance Delta*(1620), the model gives a much better description to the rather large near-threshold total cross section published by COSY-11.
WOS关键词PROTON-PROTON COLLISIONS ; THRESHOLD HYPERON PRODUCTION ; HEAVY-ION COLLISIONS ; NEAR-THRESHOLD ; CROSS-SECTION ; KAON PRODUCTION ; LAMBDA ; MESON ; COSY-11
WOS研究方向Physics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000254124700023
公开日期2010-10-29
源URL[http://ir.imp.cas.cn/handle/113462/5783]  
专题近代物理研究所_近代物理研究所知识存储（2010之前）
通讯作者Cao Xu
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Collis, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Cao Xu,Lee Xi-Guo,Wang Qing-Wu. Strangeness production process pp -> nK(+)Sigma(+) within resonance model[J]. CHINESE PHYSICS LETTERS,2008,25(3):888-891.
APA Cao Xu,Lee Xi-Guo,&Wang Qing-Wu.(2008).Strangeness production process pp -> nK(+)Sigma(+) within resonance model.CHINESE PHYSICS LETTERS,25(3),888-891.
MLA Cao Xu,et al."Strangeness production process pp -> nK(+)Sigma(+) within resonance model".CHINESE PHYSICS LETTERS 25.3(2008):888-891.

入库方式： OAI收割

来源：近代物理研究所

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