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题名: Meson-baryon components in the states of the baryon decuplet
作者: Aceti, F ;  Dai, LR ;  Geng, LS ;  Oset, E ;  Zhang, Y
刊名: EUROPEAN PHYSICAL JOURNAL A
出版日期: 2014
卷号: 50, 期号:3, 页码:57
关键词: NONPERTURBATIVE CHIRAL APPROACH ;  NUCLEAR-REACTIONS ;  UNIFIED THEORY ;  PERTURBATION-THEORY ;  DYNAMICS ;  SCATTERING ;  PARTICLES ;  RESONANCE
学科分类: Physics
DOI: 10.1140/epja/i2014-14057-2
通讯作者: Aceti, F (reprint author), Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,Dept Fis Teor, Apartado 22085, Valencia 46071, Spain.
部门归属: [Aceti, F.; Oset, E.] Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,Dept Fis Teor, Valencia 46071, Spain; [Aceti, F.; Oset, E.] Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,IFIC, Valencia 46071, Spain; [Dai, L. R.; Zhang, Y.] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China; [Aceti, F.; Dai, L. R.; Oset, E.] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Geng, L. S.] Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China; [Geng, L. S.] Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China
英文摘要: We apply an extension of the Weinberg compositeness condition on partial waves of L = 1 and resonant states to determine the weight of the meson-baryon component in the Delta(1232) resonance and the other members of the baryon decuplet. We obtain an appreciable weight of pi N in the Delta(1232) wave function, of the order of 60%, which looks more natural when one recalls that experiments on deep inelastic and Drell Yan give a fraction of pi N component of 34% for the nucleon. We also show that, as we go to higher energies in the members of the decuplet, the weights of the meson-baryon component decrease and they already show a dominant part for a genuine, non-meson-baryon, component in the wave function. We write a section to interpret the meaning of the Weinberg sum rule when it is extended to complex energies and another one for the case of an energy-dependent potential.
资助者: European FEDER funds [FIS2011-28853-C02-01]; Generalitat Valenciana in the program Prometeo [2009/090]; Natural Science Foundation of China [11375080, 10975068]; Natural Science Foundation of Liaoning Scientific Committee [2013020091]; Chinese Academy of Sciences [KJCX2.YW.W10]; National Natural Science Foundation of China [11005007]; European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter (acronym HadronPhysics3) under the Seventh Framework Programme of EU [283286]; Spanish Ministerio de Economia y Competitividad
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000333108700001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15461
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Aceti, F,Dai, LR,Geng, LS,et al. Meson-baryon components in the states of the baryon decuplet[J]. EUROPEAN PHYSICAL JOURNAL A,2014,50(3):57.
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