Sigma resonances from K- N -> pi Lambda reactions with center-of-mass energies from 1550 to 1676 MeV

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	Sigma resonances from K- N -> pi Lambda reactions with center-of-mass energies from 1550 to 1676 MeV
	Zou, BS
刊名	PHYSICAL REVIEW C
	2012
卷号	86 期号:2 页码:25201
关键词	PARTIAL-WAVE ANALYSIS BARYON SPECTRUM QUARK-MODEL STATES
ISSN号	0556-2813
通讯作者	Gao, PZ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	For the study of the Sigma resonances, we analyze the differential cross sections and Lambda polarizations for the reactions K- n -> pi(-) Lambda and K- p -> pi(0)Lambda with an effective Lagrangian approach. Data of an early experiment and the recent Crystal Ball experiment at BNL are included in the analysis with the c. m. energy from 1550 to 1676 MeV. Our results clearly support the existence of a Sigma resonance with J(P) = 1/2(+), mass near 1633 MeV, and width about 120 MeV, which confirms the three-star Sigma(1660)1/2(+) in PDG. Meanwhile, our results do not support the existence of the two-star Sigma(1620)1/2(-) in PDG. The analysis results for the parameters of the relevant Sigma resonances and couplings are presented.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [10905059, 11035006, 11261130311]; DFG [CRC110]; NSFC [CRC110]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200]
原文出处	http://dx.doi.org/10.1103/PhysRevC.86.025201
语种	英语
WOS记录号	WOS:000307803700002
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15043]
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	Zou, BS. Sigma resonances from K- N -> pi Lambda reactions with center-of-mass energies from 1550 to 1676 MeV[J]. PHYSICAL REVIEW C,2012,86(2):25201.
APA	Zou, BS.(2012).Sigma resonances from K- N -> pi Lambda reactions with center-of-mass energies from 1550 to 1676 MeV.PHYSICAL REVIEW C,86(2),25201.
MLA	Zou, BS."Sigma resonances from K- N -> pi Lambda reactions with center-of-mass energies from 1550 to 1676 MeV".PHYSICAL REVIEW C 86.2(2012):25201.