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题名: Role of a triangle singularity in the gamma p -> K+Lambda (1405) reaction
作者: Wang, E ;  Xie, JJ ;  Liang, WH ;  Guo, FK ;  Oset, E
刊名: PHYSICAL REVIEW C
出版日期: 2017
卷号: 95, 期号:1, 页码:15205
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevC.95.015205
通讯作者: Wang, E (reprint author), Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Henan, Peoples R China.
文章类型: Article
英文摘要: We show the effects of a triangle singularity mechanism for the gamma p -> K+Lambda(1405) reaction. The mechanism has a N-* resonance around 2030 MeV, which decays into K*Sigma. The K-* decays to K+ pi, and the pi Sigma merge to form the Lambda (1405). This mechanism produces a peak around root s = 2110 MeV, and has its largest contribution around cos theta= 0. The addition of this mechanism to other conventional ones leads to a good reproduction of d sigma/dcos theta and the integrated cross section around this energy, providing a solution to a problem encountered in previous theoretical models.
类目[WOS]: Physics, Nuclear
关键词[WOS]: KAON-NUCLEON INTERACTIONS ;  CHIRAL DYNAMICS ;  BARYON CHANNELS ;  PHOTOPRODUCTION ;  LAMBDA(1405) ;  THRESHOLD ;  PROTON ;  STATES ;  CONSTRAINTS ;  RESONANCES
项目资助者: Chinese Academy of Science [2013T2J0012] ;  National Natural Science Foundation of China [11565007, 11547307, 11475227, 11505158] ;  Youth Innovation Promotion Association CAS [2016367] ;  DFG ;  NSFC [CRC 110, 11621131001] ;  Chinese Academy of Sciences [QYZDB-SSW-SYS013] ;  Thousand Talents Plan for Young Professionals ;  China Postdoctoral Science Foundation [2015M582197] ;  Postdoctoral Research Sponsorship in Henan Province [2015023] ;  Spanish Ministerio de Economia y Competitividad ;  European FEDER funds [FIS2011-28853-C02-01, FIS2011-28853-C02-02, FIS2014-57026-REDT, FIS2014-51948-C2-1-P, FIS2014-51948-C2-2-P] ;  Generalitat Valenciana in the program Prometeo [II-2014/068]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/22151
Appears in Collections:理论物理所2017年知识产出_期刊论文

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Recommended Citation:
Wang, E,Xie, JJ,Liang, WH,et al. Role of a triangle singularity in the gamma p -> K+Lambda (1405) reaction[J]. PHYSICAL REVIEW C,2017,95(1):15205.
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