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题名: Spectrum and Bethe-Salpeter amplitudes of Omega baryons from lattice QCD
作者: Liang, J ;  Sun, W ;  Chen, Y ;  Qiu, WF ;  Gong, M ;  Liu, C ;  Liu, YB ;  Liu, ZF ;  Ma, JP ;  Zhang, JB
刊名: CHINESE PHYSICS C
出版日期: 2016
卷号: 40, 期号:4, 页码:41001
关键词: Omega baryon ;  excited state ;  BS amplitude
学科分类: Physics
DOI: http://dx.doi.org/10.1088/1674-1137/40/4/041001
通讯作者: Liang, J ;  Chen, Y (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China. ;  Liang, J ;  Chen, Y (reprint author), Chinese Acad Sci, Theoret Ctr Sci Facil, Beijing 100049, Peoples R China.
文章类型: Article
英文摘要: The Omega baryons with J(P) = 3/2(+/-), 1/2(+/-) are studied on the lattice in the quenched approximation. Their mass levels are ordered as M3/2+ < M3/2- approximate to M1/2- < M1/2+, as is expected from the constituent quark model. The mass values are also close to those of the four Omega states observed in experiments. We calculate the Bethe-Salpeter amplitudes of Omega(3/2(+)) and Omega(1/2(+)) and find there is a radial node for the Omega(1/2(+)) Bethe-Salpeter amplitude, which may imply that Omega(1/2(+)) is an orbital excitation of Omega baryons as a member of the (D, L-N(P))= (70,0(2)(+)) supermultiplet in the SU(6) circle times O(3) quark model description. Our results are helpful for identifying the quantum numbers of experimentally observed Omega states.
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: ANISOTROPIC LATTICES ;  SYSTEMS
收录类别: SCI
项目资助者: National Science Foundation of China (NSFC) [11105153, 11335001, 11405053] ;  Youth Innovation Promotion Association of CAS, NSFC [11261130311] ;  DFG [CRC 110] ;  NSFC [CRC 110]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21710
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Liang, J,Sun, W,Chen, Y,et al. Spectrum and Bethe-Salpeter amplitudes of Omega baryons from lattice QCD[J]. CHINESE PHYSICS C,2016,40(4):41001.
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