Meson-baryon components in the states of the baryon decuplet

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	Meson-baryon components in the states of the baryon decuplet
	Aceti, F ; Dai, LR ; Geng, LS ; Oset, E ; Zhang, Y
刊名	EUROPEAN PHYSICAL JOURNAL A
	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
ISSN号	1434-6001
通讯作者	Aceti, F (reprint author), Univ Valencia, CSIC, Ctr Mixto, Inst Invest Paterna,Dept Fis Teor, Apartado 22085, Valencia 46071, Spain.
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.
学科主题	Physics
收录类别	SCI
资助信息	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
原文出处	http://dx.doi.org/10.1140/epja/i2014-14057-2
语种	英语
WOS记录号	WOS:000333108700001
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15461]
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	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.
APA	Aceti, F,Dai, LR,Geng, LS,Oset, E,&Zhang, Y.(2014).Meson-baryon components in the states of the baryon decuplet.EUROPEAN PHYSICAL JOURNAL A,50(3),57.
MLA	Aceti, F,et al."Meson-baryon components in the states of the baryon decuplet".EUROPEAN PHYSICAL JOURNAL A 50.3(2014):57.