2007年
Five-quark picture of Lambda(1405) in anisotropic lattice QCD
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT
- ,
- ,
- ,
- 巻
- 168
- 号
- 168
- 開始ページ
- 598
- 終了ページ
- 601
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1143/PTPS.168.598
- 出版者・発行元
- PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Fine-quark (5Q) picture of Lambda(1405) is studied using quenched lattice QCD with an exotic 5Q operator of N (K) over bar type. To discreminate mere N (K) over tilde and Sigma pi scattering states, Hybrid Boundary Condition (HBC), a flavor-dependent boundary condition, is imposed on the quark fields along spatial direction. 5Q mass m(5Q) similar or equal to 1.89 GeV is obtained after the chiral extrapolation to the physical quark mass region, which is too heavy to be identified with Lambda(1405). Then, Lambda(1405) seems neither a pure 3Q state nor a pure 5Q state, and therefore we present an interesting possibility that Lambda(1405) is a mixed state of 3Q and 5Q states.
- リンク情報
- ID情報
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- DOI : 10.1143/PTPS.168.598
- ISSN : 0375-9687
- Web of Science ID : WOS:000251015200089