A Pentaquark Model of the Negative Parity Λ(1405)(Pentaquarks and related topics, Exotic hadrons, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)
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概要
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We test a pentaquark model of the negative parity hyperon Λ(1405). We use the model where valence four quarks and one antiquark move in a potential relativisticaly and interact with themselves and each other through gluon and NG boson. We calculate mass shift of the system and find that there are two Λ(1405) with almost degenerate mass : one flavor singlet and one flavor octet. We calclate also σ-term and scalar form factor of the hyperon and show their usefulness to deduce the number of valence quark in the hypeon.
- 一般社団法人日本物理学会の論文
- 2007-11-09
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- A Pentaquark Model of the Negative Parity Λ(1405)(Pentaquarks and related topics, Exotic hadrons, New Frontiers in QCD-Exotic Hadrons and Hadronic Matter-)