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题名: Sigma resonances from K- N -> pi Lambda reactions with center-of-mass energies from 1550 to 1676 MeV
作者: Gao, PZ ;  Shi, J ;  Zou, BS
刊名: PHYSICAL REVIEW C
出版日期: 2012
卷号: 86, 期号:2, 页码:25201
关键词: PARTIAL-WAVE ANALYSIS ;  BARYON SPECTRUM ;  QUARK-MODEL ;  STATES
学科分类: Physics
通讯作者: Gao, PZ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
部门归属: [Gao, Puze; Shi, Jun; Zou, B. S.] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; [Gao, Puze; Shi, Jun; Zou, B. S.] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China; [Zou, B. S.] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, 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.
资助者: 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]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000307803700002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15043
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Gao, PZ,Shi, J,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.
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