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An, CS; Metsch, BC; Zou, BS; An, CS (reprint author), Chinese Acad Sci, Ctr Sci Facil, Inst High Energy Phys & Theoret Phys, Beijing 100049, Peoples R China.
Mixing of the low-lying three- and five-quark Omega states with negative parity
Source PublicationPHYSICAL REVIEW C
Language英语
KeywordRelativistic Quark-model Pair-creation Model K-p Interactions Hyperfine Interactions Baryon Spectrum Scalar Mesons 11 Gev/c Decays Forces Breaking
AbstractMixing of the low-lying three- and five-quark Omega states with spin-parity quantum numbers 1/2(-) and 3/2(-) is investigated, employing an instanton-induced quark-antiquark pair creation model, which precludes transitions between s(3) and s(4)(s) over bar configurations. Models with hyperfine interactions between quarks are of three different kinds, namely, one-gluon-exchange (OGE), Goldstone-boson-exchange (GBE), and an instanton-induced interaction (INS). Numerical results show that the instanton-induced pair creation causes strong mixing between the three- and five-quark configurations with spin 3/2, and that this mixing decreases the energy of the lowest spin 3/2 states in all three different hyperfine interaction models to similar to 1750 +/- 50 MeV. On the other hand, transition couplings between s(3) and s(3)q (q) over bar states with spin 1/2 caused by instanton-induced q (s) over bar creation is very small and the resulting mixing of three- and five-quark configurations in the OGE and INS models is negligible, while the mixing of the spin 1/2 states in GBE model is not; but effects of this mixing on energies of mixed states are also very small. Accordingly, the lowest Omega states with negative parity in all three hyperfine interactions models have spin 3/2.
2013
ISSN0556-2813
Volume87Issue:6
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11205164, 11035006, 11121092, 11261130311]; DFG [CRC110]; NSFC [CRC110]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200] ; National Natural Science Foundation of China [11205164, 11035006, 11121092, 11261130311]; DFG [CRC110]; NSFC [CRC110]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200] ; National Natural Science Foundation of China [11205164, 11035006, 11121092, 11261130311]; DFG [CRC110]; NSFC [CRC110]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200] ; National Natural Science Foundation of China [11205164, 11035006, 11121092, 11261130311]; DFG [CRC110]; NSFC [CRC110]; Chinese Academy of Sciences [KJCX2-EW-N01]; Ministry of Science and Technology of China [2009CB825200]
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Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15341
Collection理论物理所科研产出_SCI论文
Corresponding AuthorAn, CS (reprint author), Chinese Acad Sci, Ctr Sci Facil, Inst High Energy Phys & Theoret Phys, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
An, CS,Metsch, BC,Zou, BS,et al. Mixing of the low-lying three- and five-quark Omega states with negative parity[J]. PHYSICAL REVIEW C,2013,87(6).
APA An, CS,Metsch, BC,Zou, BS,&An, CS .(2013).Mixing of the low-lying three- and five-quark Omega states with negative parity.PHYSICAL REVIEW C,87(6).
MLA An, CS,et al."Mixing of the low-lying three- and five-quark Omega states with negative parity".PHYSICAL REVIEW C 87.6(2013).
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